U.S. patent application number 17/158027 was filed with the patent office on 2022-06-09 for boxing speedball.
This patent application is currently assigned to Quanzhou Economic and Technological Development Zone Fuxin Sports Equipment Co., Ltd.. The applicant listed for this patent is Quanzhou Economic and Technological Development Zone Fuxin Sports Equipment Co., Ltd.. Invention is credited to Linlin LI, Yichen LI.
Application Number | 20220176222 17/158027 |
Document ID | / |
Family ID | 1000005405409 |
Filed Date | 2022-06-09 |
United States Patent
Application |
20220176222 |
Kind Code |
A1 |
LI; Linlin ; et al. |
June 9, 2022 |
BOXING SPEEDBALL
Abstract
A boxing speedball includes a fixed base detachably connected to
a solid object, a ball body, a rebound device arranged at the upper
part of the ball body, and a connector configured to connect the
rebound device to the fixed base. The fixed base and the connector
are adjustable and fastened through a fastener. A frictional
resistance device is further provided between the fixed base and
the connector, and is configured to increase the frictional force
area between the fixed base and the connector. The boxing speedball
increases the frictional force area at the connection, increases
the friction force itself, improves the security of the connection,
and is less likely to be twisted and damaged.
Inventors: |
LI; Linlin; (Quanzhou,
CN) ; LI; Yichen; (Quanzhou, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Quanzhou Economic and Technological Development Zone Fuxin Sports
Equipment Co., Ltd. |
Quanzhou |
|
CN |
|
|
Assignee: |
Quanzhou Economic and Technological
Development Zone Fuxin Sports Equipment Co., Ltd.
Quanzhou
CN
|
Family ID: |
1000005405409 |
Appl. No.: |
17/158027 |
Filed: |
January 26, 2021 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A63B 71/023 20130101;
A63B 69/205 20130101; A63B 2225/093 20130101 |
International
Class: |
A63B 69/20 20060101
A63B069/20; A63B 71/02 20060101 A63B071/02 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 7, 2020 |
CN |
202022945716.2 |
Claims
1. A boxing speedball, comprising a fixed base, a ball body, a
rebound device, and a connector; wherein the fixed base is
detachably connected to a solid object; the rebound device is
arranged at an upper part of the ball body; the connector is
configured to connect the rebound device to the fixed base; the
fixed base and the connector are adjustable and fastened through a
fastener; a frictional resistance device is provided between the
fixed base and the connector, and the frictional resistance device
is configured to increase a frictional force area between the fixed
base and the connector.
2. The boxing speedball according to claim 1, wherein the
frictional resistance device is first engaging teeth and second
engaging teeth; the first engaging teeth are provided at one end of
the fixed base; and the second engaging teeth are engaged with the
first engaging teeth and the second engaging teeth are provided on
an end surface of the connector, wherein the end surface of the
connector is connected to the fixed base.
3. The boxing speedball according to claim 1, wherein a spring is
provided between the first engaging teeth and the second engaging
teeth.
4. The boxing speedball according to claim 1, wherein the rebound
device comprises a cylindrical spring, a first threaded fastener
and a second threaded fastener, wherein the first threaded fastener
and the second threaded fastener are arranged at a first end and a
second end of the cylindrical spring, respectively; and the
cylindrical spring is threadedly connected to the ball body and the
connector through the first threaded fastener and the second
threaded fastener, respectively.
5. The boxing speedball according to claim 4, wherein a lower end
of the ball body is provided with an inflation-deflation port, an
upper end of the ball body is provided with an external threaded
rod, and the external threaded rod is threadedly connected to the
first threaded fastener at the first end of the cylindrical
spring.
6. The boxing speedball according to claim 5, wherein the ball body
is a solid ball made of a soft material.
7. The boxing speedball according to claim 4, wherein an end of the
connector is provided with a fastening bolt, wherein the end of the
connector is connected to the cylindrical spring, the fastening
bolt is screwed to the connector, and an end of the fastening bolt
protrudes from the connector and then the end of the fastening bolt
is threadedly connected to the second threaded fastener at the
second end of the cylindrical spring.
8. The boxing speedball according to claim 1, wherein each of two
symmetric sides of the connector is provided with a receiving
slot.
9. The boxing speedball according to claim 1, wherein the fixed
base is provided with a hook slot, and a belt component passes
through the hook slot for training.
10. A boxing speedball, comprising a fixed base, a height angle
connector, a connector, a ball body, and a rebound device; wherein
the rebound device is arranged at an upper part of the ball body;
one end of the height angle connector is connected to the fixed
base; a first end of the connector is connected to the height angle
connector, and a second end of the connector is connected to the
rebound device; the fixed base and the height angle connector are
adjustable and fastened through a first fastener; the height angle
connector and the connector are adjustable and fastened through a
second fastener; a first frictional resistance device is provided
between the fixed base and the height angle connector, and the
first frictional resistance device is configured to increase a
frictional force area between the fixed base and the height angle
connector; and a second frictional resistance device is provided
between the height angle connector and the connector, and the
second frictional resistance device is configured to increase a
frictional force area between the height angle connector and the
connector.
11. The boxing speedball according to claim 10, wherein the first
frictional resistance device is first engaging teeth and second
engaging teeth, and the second frictional resistance device is
third engaging teeth and fourth engaging teeth; wherein the first
engaging teeth are provided at one end of the fixed base; the
second engaging teeth and the third engaging teeth are provided at
two ends of the height angle connector, respectively; the second
engaging teeth are engaged with the first engaging teeth; and the
fourth engaging teeth are engaged with the third engaging teeth and
the fourth engaging teeth are provided at the first end of the
connector connected to the hei.sup.ght angle connector.
12. The boxing speedball according to claim 11, wherein the height
angle connector is provided with a connector slot configured to
receive the connector, and each of two symmetric sides of the
connector is provided with a receiving slot.
13. The boxing speedball according to claim 11, wherein a first
spring is provided between the first engaging teeth and the second
engaging teeth, and a second spring is provided between the third
engaging teeth and the fourth engaging teeth.
14. The boxing speedball according to claim 10, wherein the rebound
device comprises a cylindrical spring, a first threaded fastener
and a second threaded fastener, wherein the first threaded fastener
and the second threaded fastener are arranged at a first end and a
second end of the cylindrical spring, respectively; and the
cylindrical spring is threadedly connected to the ball body and the
connector through the first threaded fastener and the second
threaded fastener, respectively.
15. The boxing speedball according to claim 14, wherein a lower end
of the ball body is provided with an inflation-deflation port, an
upper end of the ball body is provided with an external threaded
rod, and the external threaded rod is threadedly connected to the
first threaded fastener at the first end of the cylindrical
spring.
16. The boxing speedball according to claim 14, wherein an end of
the connector is provided with a fastening bolt, wherein the end of
the connector is connected to the cylindrical spring, the fastening
bolt is screwed to the connector, and an end of the fastening bolt
protrudes from the connector and then the end of the fastening bolt
is threadedly connected to the second threaded fastener at the
second end of the cylindrical spring.
17. The boxing speedball according to claim 10, wherein the fixed
base is provided with a hook slot, and a belt component passes
through the hook slot for training.
18. The boxing speedball according to claim 10, further comprising
a floor base; wherein the floor base is detachably fastened to the
fixed base, and the fixed base is detachably fastened to the height
angle connector.
19. The boxing speedball according to claim 18, wherein the floor
base is threadedly connected to the fixed base or the floor base is
fastened to the fixed base in a snap-fit manner, and the fixed base
is threadedly connected to the height angle connector or the floor
base is fastened to the height angle connector in the snap-fit
manner.
20. The boxing speedball according to claim 19, wherein a bottom
surface of the floor base is provided with an adhesion device
configured to strengthen adhesion between the bottom surface of the
floor base and a floor.
Description
CROSS REFERENCE TO THE RELATED APPLICATIONS
[0001] This application is based upon and claims priority to
Chinese Patent Application No. 202022945716.2, filed on Dec. 7,
2020, the entire contents of which are incorporated herein by
reference.
TECHNICAL FIELD
[0002] The present invention relates to the technical field of
fitness equipment, and in particular to a boxing speedball.
BACKGROUND
[0003] A boxing speedball is a sphere that is used in boxing
training after being inflated.
[0004] Boxing speedball is a kind of fitness exercise that is
simple and easy to learn. Boxing speedballs help people exercise
their coordination and improve their reflexes upon long-term
practice, and also improves muscle flexibility for the overall
body. Moreover, boxing speedballs is great for people to release
emotional tension or stress and have fun while exercising.
[0005] Existing boxing speedballs are divided into standing boxing
speedballs and rope boxing speedballs according to their fixing
methods. The standing boxing speedball is fixed to the top of a
stand, the bottom of the stand is fastened to a base body, and the
height of the boxing speedball is calibrated by adjusting the
height of the stand. For the rope boxing speedball, the two ends of
the rope boxing speedball are connected to ropes, the ropes are
connected to the ground and the ceiling, respectively, and the
height of the boxing speedball is calibrated by adjusting the
lengths of the ropes at the two ends of the rope boxing speedball.
The aforementioned boxing speedballs can achieve the purpose of
fitness exercise, but still have the following problems: the
aforementioned boxing speedballs are fixed at a single position
that cannot be adjusted according to actual needs, which narrows
their scope of application. The aforementioned two boxing
speedballs occupy much space and thus are not convenient to store.
Additionally, the adjustment of the height of these boxing
speedballs involves a complicated operation, which is quite
inconvenient for the user.
[0006] Chinese utility model No. CN210543227U discloses a boxing
speedball. As shown in FIG. 10, the boxing speedball includes the
ball body 1', the rebound assembly 2', the height adjusting
assembly 3', and the connecting assembly 4' that are successively
connected. The connecting assembly 4' has two connection modes, in
which, it can be detachably connected to a horizontal bar or a
wall. When connecting assembly 4' is connected to a horizontal bar
or a wall, the ball body 1' is suspended in the air. Although this
utility model can solve the problems existing in the aforementioned
two boxing speedballs, the height adjusting assembly and the
connecting assembly adopt a threaded connection. When this device
is subjected to a force in an opposite direction of the thread, the
connection between the height adjusting assembly and the connecting
assembly may, consequently, become loose. After long-term use, the
height adjusting assembly and the connecting assembly cannot be
locked or may become damaged, which poses a significant hidden risk
in the operational safety during exercise.
SUMMARY
[0007] In view of the above-mentioned problems, the present
invention provides a boxing speedball that increases the frictional
force area at the connection, increases the friction force,
improves the security of the connection, and is less likely to be
twisted and damaged.
[0008] To solve the above-mentioned technical problems, the present
invention adopts the following technical solution. A boxing
speedball includes a fixed base detachably connected to a solid
object, a ball body, a rebound device arranged at the upper part of
the ball body, and a connector configured to connect the rebound
device to the fixed base. The fixed base and the connector are
adjustable and fastened through a fastener. A frictional resistance
device is provided between the fixed base and the connector, and is
configured to increase the frictional force area between the fixed
base and the connector.
[0009] Further, the frictional resistance device is first engaging
teeth and second engaging teeth, wherein the first engaging teeth
are provided at one end of the fixed base, and the second engaging
teeth are engaged with the first engaging teeth and provided on an
end surface of the connector connected to the fixed base.
[0010] Further, a spring is provided between the first engaging
teeth and the second engaging teeth.
[0011] Further, the rebound device includes a cylindrical spring
and threaded fasteners arranged at the two ends of the cylindrical
spring, and the cylindrical spring is threadedly connected to the
ball body and the connector through the threaded fasteners at the
two ends, respectively.
[0012] Further, the lower end of the ball body is provided with an
inflation-deflation port, the tipper end of the ball body is
provided with an external threaded rod, and the external threaded
rod is threadedly connected to the threaded fastener at one end of
the cylindrical spring.
[0013] Further, the ball body is a solid ball made of a soft
material.
[0014] Further, one end of the connector connected to the
cylindrical spring is provided with a fastening bolt. The fastening
bolt is screwed to the connector, and the end of the fastening bolt
protrudes from the connector and then is threadedly connected to
the threaded fastener at the other end of the cylindrical
spring.
[0015] Further, each of two symmetric sides of the connector is
provided with a receiving slot.
[0016] Further, the fixed base is provided with a hook slot
configured for a belt component to pass therethrough for
training.
[0017] Based on the same concept of the present invention, the
present invention further provides a boxing speedball, including a
fixed base, a height angle connector, a connector, a ball body, and
a rebound device arranged at the upper part of the ball body. One
end of the height angle connector is connected to the fixed base.
One end of the connector is connected to the height angle
connector, and the other end of the connector is connected to the
rebound device. The fixed base and the height angle connector are
adjustable and fastened through a fastener. Also, the height angle
connector and the connector are adjustable and fastened through a
fastener. A first frictional resistance device is provided between
the fixed base and the height angle connector, and is configured to
increase the frictional force area between the fixed base and the
height angle connector. A second frictional resistance device is
provided between the height angle connector and the connector, and
is configured to increase the frictional force area between the
height angle connector and the connector.
[0018] Further, the first frictional resistance device is first
engaging teeth and second engaging teeth, and the second frictional
resistance device is third engaging teeth and fourth engaging
teeth. The first engaging teeth are provided at one end of the
fixed base. The second engaging teeth and the third engaging teeth
are provided at the two ends of the height angle connector,
respectively. The second engaging teeth are engaged with the first
engaging teeth. The fourth engaging teeth are engaged with the
third engaging teeth and provided at one end of the connector
connected to the height angle connector.
[0019] Further, the height angle connector is provided with a
connector slot configured to receive the connector, and each of two
symmetric sides of the connector is provided with a receiving
slot.
[0020] Further, a spring is provided between the first engaging
teeth and the second engaging teeth, and a spring is provided
between the third engaging teeth and the fourth engaging teeth.
[0021] Further, the rebound device includes a cylindrical spring
and threaded fasteners arranged at the two ends of the cylindrical
spring, and the cylindrical spring is threadedly connected to the
ball body and the connector through the threaded fasteners at the
two ends, respectively.
[0022] Further, the lower end of the ball body is provided with an
inflation-deflation port, the tipper end of the ball body is
provided with an external threaded rod, and the external threaded
rod is threadedly connected to the threaded fastener at one end of
the cylindrical spring.
[0023] Further, the ball body is a solid ball made of a soft
material.
[0024] Further, one end of the connector connected to the
cylindrical spring is provided with a fastening bolt, the fastening
bolt is screwed to the connector, and the end of the fastening bolt
protrudes from the connector and then is threadedly connected to
the threaded fastener at the other end of the cylindrical
spring.
[0025] Further, the fixed base is provided with a hook slot
configured for a belt component to pass therethrough for
training.
[0026] Further, the boxing speedball further includes a floor base,
the floor base is detachably fastened to the fixed base, and the
fixed base is detachably fastened to the height angle
connector.
[0027] Further, the floor base is threadedly connected to the fixed
base or the floor base is fastened to the fixed base in a snap-fit
manner. The fixed base is threadedly connected to the height angle
connector or the fixed base is fastened to the height angle
connector in a snap-fit manner.
[0028] Further, the bottom surface of the floor base is provided
with an adhesion device configured to strengthen the adhesion
between the bottom surface of the floor base and the floor.
[0029] Further, the adhesion device is a plurality of suction
cups.
[0030] By adopting the above technical solutions, the present
invention has the following advantages.
[0031] 1. In the present invention, the first engaging teeth and
the second engaging teeth are engaged with each other between the
fixed base and the height angle connector, and the third engaging
teeth and the fourth engaging teeth are engaged with each other
between the height angle connector and the connector to increase
the frictional force area at the connection and increases the
friction force, which is conducive to improving the security of the
connection. In this way, the fixed base and the height angle
connector can support each other, and the height angle connector
and the connector can support each other, so that the boxing
speedball is less likely to be twisted and damaged, thus greatly
improving the operation safety during exercise.
[0032] 2. A spring is provided between the first engaging teeth and
the second engaging teeth as well as between the third engaging
teeth and the fourth engaging teeth, respectively. After assembly,
the anti-resisting force of the spring can resist the outer end
surfaces of the connector and the height angle connector on the
inner end surfaces of the bolts to further improve the security of
the connection.
[0033] 3. The connector slot on the height angle connector is
configured to receive the connector, and the receiving shot on the
connector is configured to store the springs to reduce storage
space and facilitate packaging and transportation while saving
packaging costs.
BRIEF DESCRIPTION OF THE DRAWINGS
[0034] FIG. 1 is a top view of Embodiment 1.
[0035] FIG. 2 is a structural schematic diagram of a fixed base
according to Embodiment 1 and Embodiment 2.
[0036] FIG. 3 is a structural schematic diagram of a connector
according to Embodiment 1, Embodiment 2, and Embodiment 3.
[0037] FIG. 4 is a structural schematic diagram of a rebound device
according to Embodiment 1, Embodiment 2, and Embodiment 3.
[0038] FIG. 5 is a structural schematic diagram of a ball body
according to Embodiment 1, Embodiment 2, and Embodiment 3.
[0039] FIG. 6 is a top view of Embodiment 2.
[0040] FIG. 7 is a structural schematic diagram of a height angle
connector according to Embodiment 2 and Embodiment 3.
[0041] FIG. 8 is a schematic diagram of Embodiment 2 in use.
[0042] FIG. 9 is a structural schematic diagram of Embodiment
3.
[0043] FIG. 10 is a structural schematic diagram of Chinese utility
model No. CN2105432271U.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0044] The present invention is further described now with
reference to the drawings and specific embodiments.
Embodiment 1
[0045] As shown in FIG. 1, a boxing speedball includes the fixed
base 1 detachably connected to a solid object, the ball body 2, a
rebound device arranged at the upper part of the ball body, and the
connector 3 configured to connect the rebound device to the fixed
base. The fixed base 1 and connector 3 are adjustable and fastened
through the fastener 4.
[0046] A frictional resistance device is further provided between
the fixed base 1 and the connector 3, and is configured to increase
the frictional force area between the fixed base 1 and the
connector 3. As shown in FIG. 2, each of the two ends of the fixed
base 1 is provided with the fixing through hole 10, and the fixed
base 1 is provided with the hook slot 14 configured for the belt
component 13 to pass therethrough for training. As shown in FIG. 2
and FIG. 3, the frictional resistance device is the first engaging
teeth 11 and the second engaging teeth 12. The first engaging teeth
11 are provided at one end of the fixed base 1. The second engaging
teeth 12 are engaged with the first engaging teeth 11 and provided
on an end surface of the connector 3 connected to the fixed base 1.
A spring (not shown) is provided between the first engaging teeth
11 and the second engaging teeth 12. Each of two symmetric sides of
the connector 3 is provided with the receiving slot 32. As shown in
FIG. 4, the rebound device includes the cylindrical spring 51 and
the threaded fasteners 52 arranged at the two ends of the
cylindrical spring 51. The cylindrical spring 51 is threadedly
connected to the ball body 2 and the connector 3 through the
threaded fasteners 52 at the two ends, respectively. One end of the
connector 3 connected to the cylindrical spring 51 is provided with
the fastening bolt 31. The fastening bolt 31 is screwed to the
connector 3, and the end of the fastening bolt 31 protrudes from
the connector and then is threadedly connected to the threaded
fastener 52 at the other end of the cylindrical spring 51. As shown
in FIG. 5, the lower end of the ball body 2 is provided with the
inflation-deflation port 21, the upper end of the ball body 2 is
provided with the external threaded rod 22, and the external
threaded rod 22 is threadedly connected to the threaded fastener 52
at one end of the cylindrical spring 51. The ball body 2 is a solid
ball made of a soft material.
Embodiment 2
[0047] As shown in FIG. 6, a boxing speedball includes the fixed
base 1, the height angle connector 6, the connector 3, the ball
body 2, and a rebound device arranged at the upper part of the ball
body 2. One end of the height angle connector 6 is connected to the
fixed base 1. One end of the connector 3 is connected to the height
angle connector 6, and the other end of the connector 3 is
connected to the rebound device. The fixed base 1 and the height
angle connector 6 are adjustable and fastened through the fastener
4. Also, the height angle connector 6 and the connector 3 are
adjustable and fastened through the fastener 4. A first frictional
resistance device is provided between the fixed base 1 and the
height angle connector 6, and is configured to increase the
frictional force area between the fixed base 1 and the height angle
connector 6. A second frictional resistance device is provided
between the height angle connector 6 and the connector 3, and is
configured to increase the frictional force area between the height
angle connector 6 and the connector 3. As shown in FIG. 2 and FIG.
8, each of the two ends of the fixed base is provided with the
fixing through hole 10, and the fixed base 1 is provided with the
hook slot 14 configured for the belt component 13 to pass
therethrough for training. As shown in FIG. 6, the first frictional
resistance device is the first engaging teeth 101 and the second
engaging teeth 102, and the second frictional resistance device is
the third engaging teeth 103 and the fourth engaging teeth 104. The
first engaging teeth 101 are provided at one end of the fixed base
1. The second engaging teeth 102 and the third engaging teeth 103
are provided at the two ends of the height angle connector 6,
respectively. The second engaging teeth 102 are engaged with the
first engaging teeth 101. The fourth engaging teeth 104 are engaged
with the third engaging teeth 103 and provided at one end of the
connector 3 connected to the height angle connector 6.
[0048] As shown in FIG. 7, the height angle connector 6 is provided
with the connector slot 61 configured to receive the connector 3.
As shown in FIG. 3, each of two symmetric sides of the connector 3
is provided with the receiving slot 32. A spring (not shown) is
provided between the first engaging teeth 101 and the second
engaging teeth 102 as well as between the third engaging teeth 103
and the fourth engaging teeth 104, respectively. As shown in FIG.
4, the rebound device includes the cylindrical spring 51 and the
threaded fasteners 52 arranged at the two ends of the cylindrical
spring 51. The cylindrical spring 51 is threadedly connected to the
ball body 2 and the connector 3 through the threaded fasteners 52
at the two ends, respectively. As shown in FIG. 5, the lower end of
the ball body 2 is provided with the inflation-deflation port 21,
the upper end of the ball body 2 is provided with the external
threaded rod 22, and the external threaded rod 22 is threadedly
connected to the threaded fastener 52 at one end of the cylindrical
spring 51. The ball body 2 is a solid ball made of a soft material.
One end of the connector 3 connected to the cylindrical spring 51
is provided with the fastening bolt 31, the fastening bolt 31 is
screwed to the connector 3, and the end of the fastening bolt 31
protrudes from the connector 3 and then is threadedly connected to
the threaded fastener 52 at the other end of the cylindrical spring
51.
[0049] In the present embodiment, the number of the height angle
connector 6 is one. In practical applications, the number of the
height angle connectors 6 may be one or more according to actual
needs during use.
Embodiment 3
[0050] As shown in FIG. 9, a boxing speedball includes the fixed
base 1, the height angle connector 6, the connector 3, the ball
body 2, and a rebound device arranged at the tipper part of the
ball body 2. The height angle connector includes the first height
angle connector 62 and the second height angle connector 63. One
end of the first height angle connector 62 is connected to the
second height angle connector 63. One end of the connector 3 is
connected to the first height angle connector 62, and the other end
of the connector 3 is connected to the rebound device. The other
end of the second height angle connector 63 is detachably fastened
to the fixed base 1. The other end of the second height angle
connector 63 is threadedly connected to the fixed base 1 or the
other end of the second height angle connector 63 is fastened to
the fixed base 1 in a snap-fit manner (not shown). The first height
angle connector 62 and the second height angle connector 63 are
adjustable and fastened through the fastener 4. Also, the first
height angle connector 62 and the connector 3 are adjustable and
fastened through the fastener 4. A first frictional resistance
device is provided between the first height angle connector 62 and
the second height angle connector 63, and is configured to increase
the frictional force area between the first height angle connector
62 and the second height angle connector 63. A second frictional
resistance device is provided between the first height angle
connector 62 and the connector 3, and is configured to increase the
frictional force area between the first height angle connector 62
and the connector 3. As shown in FIG. 7, the first frictional
resistance device is the first engaging teeth (not shown) and the
second engaging teeth 102, and the second frictional resistance
device is the third engaging teeth 103 and the fourth engaging
teeth (not shown). The first engaging teeth are provided at one end
of the first height angle connector 62. The second engaging teeth
102 and the third engaging teeth 103 are provided at the two ends
of the second height angle connector 63, respectively. The second
engaging teeth 102 are engaged with the first engaging teeth. The
fourth engaging teeth (not shown) are engaged with the third
engaging teeth 103 and provided at one end of the connector 3
connected to the second height angle connector 63. As shown in FIG.
7, the second height angle connector 63 is provided with the
connector slot 61 configured to receive the connector 3.
[0051] As shown in FIG. 3, each of two symmetric sides of the
connector 3 is provided with the receiving slot 32. A spring is
provided between the first engaging teeth 101 and the second
engaging teeth 102 as well as between the third engaging teeth 103
and the fourth engaging teeth 104, respectively. As shown in FIG.
4, the rebound device includes the cylindrical spring 51 and the
threaded fasteners 52 arranged at the two ends of the cylindrical
spring 51. The cylindrical spring 51 is threadedly connected to the
ball body 2 and the connector 3 through the threaded fasteners 52
at the two ends, respectively. As shown in FIG. 5, the lower end of
the ball body 2 is provided with the inflation-deflation port 21,
the upper end of the ball body 2 is provided with the external
threaded rod 22, and the external threaded rod 22 is threadedly
connected to the threaded fastener 52 at one end of the cylindrical
spring 51. The ball body 2 is a solid ball made of a soft material.
One end of the connector 3 connected to the cylindrical spring 51
is provided with the fastening bolt 31, the fastening bolt 31 is
screwed to the connector 3, and the end of the fastening bolt 31
protrudes from the connector 3 and then is threadedly connected to
the threaded fastener 52 at the other end of the cylindrical spring
51. The boxing speedball further includes the floor base 7. The
floor base 7 is detachably fastened to the fixed base 1. The floor
base 7 is threadedly connected to the fixed base 1 or the floor
base 7 is fastened to the fixed base 1 in a snap-fit manner (not
shown). The bottom surface of the floor base 7 is provided with an
adhesion device configured to strengthen the adhesion between the
bottom surface of the floor base 7 and the floor. The adhesion
device is a plurality of suction cups 8.
[0052] In the present embodiment, the number of the second height
angle connector 63 is one. In practical applications, the number of
the second height angle connectors 63 is one or more according to
actual needs during use.
[0053] The above shows and describes the basic principles, main
features, and advantages of the present invention. It shall be
understood by those skilled in the art that the present invention
is not limited by the above embodiments, and the above embodiments
and descriptions only describe the principles of the present
invention. The present invention may also have various changes and
improvements without departing from the spirit and scope of the
present invention. Such changes and improvements shall fall within
the scope of protection of the present invention. The scope of
protection of the present invention is defined by the appended
claims and equivalents thereof.
* * * * *