U.S. patent application number 13/806155 was filed with the patent office on 2013-04-18 for front release buckle.
This patent application is currently assigned to YKK Corporation. The applicant listed for this patent is Takeshi Harada, Yasutaka Nishida. Invention is credited to Takeshi Harada, Yasutaka Nishida.
Application Number | 20130091671 13/806155 |
Document ID | / |
Family ID | 45371014 |
Filed Date | 2013-04-18 |
United States Patent
Application |
20130091671 |
Kind Code |
A1 |
Nishida; Yasutaka ; et
al. |
April 18, 2013 |
Front Release Buckle
Abstract
A front release buckle of the invention includes a plug and a
socket. The plug includes: a base; a leg that projects from the
base; and an engaging portion formed to the leg. The socket
includes: a body having an insertion opening; a housing space that
is defined inside the body and capable of housing the leg inserted
through the insertion opening; an engaged portion that is formed on
the body and engageable with the engaging portion; and a
manipulation portion that disengages an engagement between the
engaging portion and the engaged portion. The plug and the socket
are formed to be flat. The leg is flat and flexible in a thickness
direction. The engaging portion and the engaged portion are engaged
with each other in the thickness direction. The engaging portion
projects in a width direction of the leg and is formed within the
thickness of the leg.
Inventors: |
Nishida; Yasutaka; (Tokyo,
JP) ; Harada; Takeshi; (Tokyo, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Nishida; Yasutaka
Harada; Takeshi |
Tokyo
Tokyo |
|
JP
JP |
|
|
Assignee: |
YKK Corporation
Tokyo
JP
|
Family ID: |
45371014 |
Appl. No.: |
13/806155 |
Filed: |
June 24, 2010 |
PCT Filed: |
June 24, 2010 |
PCT NO: |
PCT/JP2010/060777 |
371 Date: |
December 21, 2012 |
Current U.S.
Class: |
24/618 |
Current CPC
Class: |
A44B 11/263 20130101;
Y10T 24/45545 20150115 |
Class at
Publication: |
24/618 |
International
Class: |
A44B 11/26 20060101
A44B011/26 |
Claims
1. A front release buckle comprising: a plug; and a socket into
which the plug is inserted for engagement, wherein the plug
comprises: a base; a leg that projects from the base; and an
engaging portion that is formed to the leg, the socket comprises: a
body having an insertion opening; a housing space that is defined
inside the body and capable of housing the leg inserted through the
insertion opening; an engaged portion that is formed on the body
and engageable with the engaging portion; and a manipulation
portion that disengages an engagement between the engaging portion
and the engaged portion, the plug and the socket are formed to be
flat, the leg is flat and flexible in a thickness direction, the
engaging portion and the engaged portion are engaged with each
other in the thickness direction, and the engaging portion projects
in a width direction of the leg and is formed within the thickness
of the leg.
2. The front release buckle according to claim 1, wherein in an
engagement between the plug and the socket, the manipulation
portion and the engaging portion are positioned in a manner capable
of contacting with each other, the manipulation portion is
positioned in the thickness direction of the leg to face the leg
and has flexibility in the thickness direction, and the
manipulation portion comprises a projection projecting inward of
the socket.
3. The front release buckle according to claim 1, wherein the
engaging portion comprises inclined portions respectively having
inclined surfaces near the manipulation portion, and the
manipulation portion is flexed toward the engaging portion to cause
the projection to press the inclined surfaces.
4. The front release buckle according to claim 3, wherein an angle
of each of the inclined surfaces is 15 degrees.
5. The front release buckle according to claim 1, further
comprising: a pair of holders that position and hold the plug
projecting from the base and the socket.
6. The front release buckle according to claim 5, wherein the leg
diagonally projects in a manner to approach the manipulation
portion as the leg extends in an insertion direction.
Description
TECHNICAL FIELD
[0001] The present invention relates to a front release buckle in
which a top part is manipulated for releasing an engagement.
BACKGROUND ART
[0002] There has been typically used a buckle that detachably
engages a plug with a socket in order to couple a string member
such as a belt in various applications such as clothes, bags, shoes
and packages.
[0003] Such a buckle is required to be easily handled for coupling
and releasing and not to cause an accidental release when the
buckle is not intended to be released. As a product responding to
such needs, a front release buckle in which a top part is
manipulated for releasing an engagement has been used.
[0004] There has been known a front release buckle in which a plug
and a socket are engaged to each other to be locked.
[0005] For instance, Patent Literature 1 discloses a flat buckle in
which a locking lug (i.e., a convex engaging portion of a plug)
projects in a thickness direction of the buckle.
[0006] Patent Literature 2 discloses a flat buckle in which a first
convex portion to be engaged with a socket is provided at an end of
a plug and projects in a thickness direction of the buckle.
CITATION LIST
Patent Literature(s)
[0007] Patent Literature 1 Japanese Patent No. 3248104
[0008] Patent Literature 2 JP-A-2006-204619
SUMMARY OF THE INVENTION
Problems to be Solved by the Invention
[0009] In the buckle disclosed in Patent Literatures 1 and 2, since
the locking lug projects in the thickness direction of the buckle,
the thickness of the buckle becomes large. Accordingly, for
instance, when such a buckle is used in a rucksack and the like,
due to a large thickness of the buckle, a position where the buckle
is attached in the rucksack may be limited, or a whole design of
the rucksack may be adversely affected.
[0010] Accordingly, an object of the invention is to provide a
front release buckle with a reduced thickness.
Means for Solving the Problems
[0011] A front release buckle according to an aspect of the
invention includes a plug; and a socket into which the plug is
inserted for engagement, in which the plug includes: a base; a leg
that projects from the base; and an engaging portion that is formed
to the leg, the socket includes: a body having an insertion
opening; a housing space that is defined inside the body and
capable of housing the leg inserted through the insertion opening;
an engaged portion that is formed on the body and engageable with
the engaging portion; and a manipulation portion that disengages an
engagement between the engaging portion and the engaged portion,
the plug and the socket are formed to be flat, the leg is flat and
flexible in a thickness direction, the engaging portion and the
engaged portion are engaged with each other in the thickness
direction, and the engaging portion projects in a width direction
of the leg and is formed within the thickness of the leg.
[0012] In the above aspect of the invention, since the engaging
portion of the plug projects in the width direction, not in the
thickness direction, the thickness of the socket housing the plug
and the engaging portion is reducible. Accordingly, the thickness
of the buckle does not become large but is reducible. For instance,
when a front release buckle having such a small thickness is used
in a rucksack or the like, a position where the buckle is attached
in the rucksack is not limited because of the small thickness of
the buckle. Moreover, because of the small thickness of the buckle,
the buckle becomes less noticeable and is not caught to cause no
adverse effects on a whole design of the rucksack or the like.
[0013] In the above aspect of the invention, it is desirable that,
in an engagement between the plug and the socket, the manipulation
portion and the engaging portion are positioned in a manner capable
of contacting with each other, the manipulation portion is
positioned in the thickness direction of the leg to face the leg
and has flexibility in the thickness direction, and the
manipulation portion includes a projection projecting inward of the
socket.
[0014] With this arrangement, the projection is pressed onto the
leg by flexing the manipulation portion toward the engaging
portion. At this time, since the engagement between the engaging
portion and the engaged portion is released, the leg can be pushed
out toward the insertion opening of the socket.
[0015] In the above aspect of the invention, it is desirable that
the engaging portion includes inclined portions respectively having
inclined surfaces near the manipulation portion, and the
manipulation portion is flexed toward the engaging portion to cause
the projection to press the inclined surfaces.
[0016] With this arrangement, the projection is pressed onto the
inclined surface by flexing the manipulation portion toward the
engaging portion. At this time, since the projection is flexed
toward the engaging portion while sliding on the inclined surface,
the engagement between the engaging portion and the engaged portion
is released while the engaging portion is pushed out toward the
insertion opening of the socket. Thus, when the manipulation
portion is pressed, the plug is separated and pushed out from the
socket. Accordingly, the plug can be reliably separated from the
socket by only pressing the manipulation portion.
[0017] In the above aspect of the invention, it is desirable that
an angle of each of the inclined surfaces is 15 degrees.
[0018] With this arrangement, since the angle of each of the
inclined surfaces is 15 degrees, the projection can smoothly slide
on the inclined surfaces. Accordingly, when the manipulation
portion is pressed, the plug is separated and smoothly pushed out
from the socket. Consequently, the plug can be more reliably
separated from the socket by only pressing the manipulation
portion.
[0019] In the above aspect of the invention, it is desirable that
the front release buckle further includes a pair of holders that
position and hold the plug projecting from the base and the
socket.
[0020] With this arrangement, since the pair of the holders to
position and hold the plug and the socket are provided, the
engagement between the engaging portion and the engaged portion can
be reliably made. Moreover, for instance, when a twisting stress is
applied on the plug and the socket, the plug and the socket are not
displaced, so that the engagement between the engaging portion and
the engaged portion can be reliably maintained without any
possibility of being released, whereby a function as a buckle is
achievable.
[0021] In the above aspect of the invention, it is desirable that
the leg diagonally projects in a manner to approach the
manipulation portion as the leg extends in an insertion
direction.
[0022] With this arrangement, since the leg projecting from the
base is closer to the manipulation portion than the holders are,
when the manipulation portion is pressed, the engaging portion can
be pressed with a slight flexure of the manipulation portion.
Accordingly, even when the thickness of the front release buckle is
reduced, the plug can be separated and pushed out from the socket
by pressing the manipulation portion. Consequently, the thickness
of the front release buckle can be further reduced.
BRIEF DESCRIPTION OF DRAWINGS
[0023] FIG. 1 is a plan view showing an overall structure according
to an exemplary embodiment of the invention.
[0024] FIG. 2 is a side elevation showing the overall structure
according to the above exemplary embodiment.
[0025] FIG. 3 is a front view showing the overall structure
according to the above exemplary embodiment.
[0026] FIG. 4 is a plan view of a plug according to the above
exemplary embodiment.
[0027] FIG. 5 is a side elevation of the plug according to the
above exemplary embodiment.
[0028] FIG. 6 is a plan view of a socket according to the above
exemplary embodiment.
[0029] FIG. 7 is a side elevation of the socket according to the
above exemplary embodiment.
[0030] FIG. 8 is a front view of the socket according to the above
exemplary embodiment.
[0031] FIG. 9 is a cross-sectional view of a manipulation portion
of the socket according to the above exemplary embodiment.
[0032] FIG. 10 is a cross-sectional view showing an engagement
between the plug and the socket according to the above exemplary
embodiment.
[0033] FIG. 11 is a cross-sectional view showing a state where the
plug and the socket are being engaged according to the above
exemplary embodiment.
[0034] FIG. 12 shows a state in which an engaging portion is pushed
out by flexure of the manipulation portion in the above exemplary
embodiment.
[0035] FIG. 13 is a plan view showing a plug according to another
exemplary embodiment of the invention.
[0036] FIG. 14 is a plan view showing a plug according to still
another exemplary embodiment of the invention.
[0037] FIG. 15 is a plan view showing a plug according to a further
exemplary embodiment of the invention.
[0038] FIG. 16 is a plan view showing a plug according to a still
further exemplary embodiment of the invention.
DESCRIPTION OF EMBODIMENT(S)
[0039] An exemplary embodiment of the invention will be described
below with reference to the attached drawings.
[0040] FIGS. 1 to 12 show an exemplary embodiment of the
invention.
[0041] An overall structure of a front release buckle will be
described below with reference to FIGS. 1 to 3.
[0042] FIG. 1 is a plan view showing the overall structure
according to the exemplary embodiment of the invention. FIG. 2 is a
side elevation showing the overall structure according to the above
exemplary embodiment. FIG. 3 is a front view showing the overall
structure according to the above exemplary embodiment.
[0043] As shown in FIGS. 1 to 3, a front release buckle 1 according
to this exemplary embodiment includes a plug 10 and a socket 20
into which the plug 10 is inserted for engagement.
[0044] As shown in the figures, the front release buckle 1
according to this exemplary embodiment is used to couple and
separate ends of a string member such as a belt. The front release
buckle 1 includes the plug 10 integrally formed of a synthetic
resin and the socket 20 also integrally formed of a synthetic
resin.
[0045] The plug 10 and the socket 20 may be formed of other
materials such as metal instead of a synthetic resin according to
other molding methods (e.g., rapid manufacturing and casting)
instead of an injection molding.
[0046] A structure of the plug will be described with reference to
FIGS. 4 and 5.
[0047] FIG. 4 is a plan view of the plug according to the above
exemplary embodiment. FIG. 5 is a side elevation of the plug
according to the above exemplary embodiment.
[0048] In FIGS. 4 and 5, an entirety of the plug 10 is integrally
formed of a synthetic resin by injection molding. The plug 10
includes a base 11 having a pair of legs 12, an engaging portion 14
formed in each of the legs 12, and a belt attachment 19 into which
a belt or the like is inserted.
[0049] The legs 12 extend in parallel to each other in a length
direction of the base 11 (an insertion direction of the plug 10 to
the socket 20, i.e., in a vertical direction in FIG. 1) from both
sides of the base 11 in a width direction (a direction orthogonal
to the insertion direction of the plug 10 to the socket 20 and a
thickness direction of the socket 20, i.e., a horizontal direction
in FIG. 1). A portion from the middle to the tip end of each of the
legs 12 is elastically deformable in a thickness direction (i.e., a
direction orthogonal to the width direction and the insertion
direction described above).
[0050] The pair of legs 12 are inclined in such a manner to
approach a manipulation portion 27A as the legs 12 extend in the
insertion direction, so that an entirety of the legs 12 can receive
a force for elastic deformation in the thickness direction.
[0051] The engaging portion 14 is formed as a projection extending
from the tip end of each of the legs 12 in the width direction. The
tip end of each of the legs 12 is T-shaped in a plan view. The
engaging portion 14 formed at the tip end of each of the legs 12 is
formed to have a thickness (i.e., height) that does not exceed a
height of each of the legs 12.
[0052] The engaging portion 14 includes an inclined portion 14B
that is formed at the tip end of each of the legs 12, and a
connecting inclined portion 14D that connects the inclined portions
14B in the width direction. With this connecting inclined portion
14D, the pair of legs 12 are restricted from being deformed in the
width direction by an external force. Further, when the pair of
legs 12 are elastically deformed in the thickness direction, this
connecting inclined portion 14D allows the pair of legs 12 to be
deformed by the same volume.
[0053] The inclined portion 14B includes an inclined surface 14A
that is gradually inclined so that the thickness of the engaging
portion 14 becomes smaller toward the tip end of each of the legs
12 in the insertion direction. The connecting inclined portion 14D
includes a connecting inclined surface 14C.
[0054] As shown in FIG. 5, a pair of holders 16 are provided at
outer sides of the pair of legs 12. The pair of holders 16 are
rod-like members that are disposed on the base 11 apart from each
other in the width direction of the base 11 and extend in the
insertion direction. A tip end of each of the pair of holders 16 is
spaced apart from the engaging portion 14. A thickness of each of
the holders 16 is formed to be smaller than the thickness of the
base 11 and larger than thickness of each of the legs 12.
[0055] Each of the holders 16 includes a projecting holder 16A that
is provided along an outer side of the each of the holders 16 in
the width direction.
[0056] The engaging portion 14 and the holders 16 are guided by
undulations (described later) formed on an inner side of the socket
20 so that the plug 10 is guided to an appropriate position during
an insertion operation.
[0057] As shown in FIG. 4, the belt attachment 19 is formed in a
middle area of the base 11. The belt attachment 19 includes: a belt
attachment hole 19A that is provided in the middle of the inside of
the belt attachment 19 and into which an end of the belt is
inserted; a first bar 19B that extends in the width direction of
the plug 10 in a manner to bridge over the plug 10 between the ends
of the plug 10 (i.e., the ends of the base 11); and a second bar
19C that is formed in the middle of the belt attachment hole 19A in
a manner to bridge over the belt attachment hole 19A. The second
bar 19C divides the belt attachment hole 19A into an
insertion-direction front hole 19D and an insertion-direction rear
hole 19E.
[0058] With this arrangement, when a belt (not shown) is inserted
into the belt attachment hole 19A and wound around the second bar
19C to be contacted with the first bar 19B, the belt can be engaged
and fixed to the plug while a length of the belt can be
adjusted.
[0059] A structure of the socket will be described with reference
to FIGS. 1 and 6 to 8.
[0060] FIG. 6 is a plan view of the socket according to the above
exemplary embodiment. FIG. 7 is a side elevation of the socket
according to the above exemplary embodiment. FIG. 8 is a front view
showing the socket according to the above exemplary embodiment.
[0061] In FIGS. 1 and 6 to 8, an entirety of the socket 20 is
integrally formed of a synthetic resin by injection molding. The
socket 20 includes: a hollow cylindrical body 21 having an
insertion opening 22; a housing space 23 being formed in the body
21 and capable of housing the legs 12 of the plug 10 to be inserted
through the insertion opening 22; an engaged portion 24 being
formed in the body 21 and engageable with the engaging portion 14;
a manipulation opening 27 being formed in the center in a plan view
of the body 21; an opening 28 being formed at a position
corresponding to the engaging portion when the socket is engaged
with the plug; and a belt attachment 29 into which a belt (not
shown) is inserted.
[0062] The engaged portion 24 is a wedge-shaped member having an
inclined surface facing the insertion opening 22 and being formed
inside the housing space 23 at two positions spaced apart from each
other in the width direction. The engaged portions 24 are formed on
an inner side of a top surface of the body 21 and project into the
housing space 23.
[0063] A thickness of the engaged portion 24 is formed to be
smaller than a thickness of the housing space 23 and corresponds to
the thickness of the engaging portion 14 formed to each of the pair
of legs 12.
[0064] A guide surface 25 is formed inside the housing space 23 to
guide the engaging portion 14 to the engaged portion 24 for
engagement.
[0065] On the guide surface 25, a plurality of pairs of grooves 26
are formed in the insertion direction from an end of the insertion
opening 22. When the legs 12 and holders 16 are inserted from the
insertion opening 22, convex portions (not shown) formed on a
bottom surface of each of the legs 12 mates with the grooves 26,
where the grooves 26 serve as a guide to lead the engaging portions
14 formed at the tip ends of the legs 12 to the engaged portions
24.
[0066] A structure of the manipulation portion of the socket will
be described with reference to FIG. 9.
[0067] FIG. 9 is a cross-sectional view of the manipulation portion
of the socket according to the above exemplary embodiment.
[0068] As shown in FIG. 9, in order to release the engagement of
the engaging portion 14 and the engaged portion 24, the
manipulation opening 27 is formed in the center of the body 21 in a
plan view. The manipulation opening 27 communicates with the
housing space 23 inside the body 21.
[0069] The manipulation opening 27 is formed at a position where
the connecting inclined portion 14D that connects the legs 12
inserted from the insertion opening 22 is exposed.
[0070] The manipulation portion 27A is a flexible member that is
elastically deformable in the thickness of the socket by being
pressed, the manipulation portion 27A being provided to the
manipulation opening 27. The manipulation portion 27A is positioned
to face the legs 12 and is configured to be contacted with the
connecting inclined portion 14D by being elastically deformed. The
manipulation portion 27A includes a projection 27B that is
positioned to be contacted with the connecting inclined portion 14D
and projects inward in the thickness direction of the socket and a
thick portion 27C that corresponds to the projection 27B and
projects outward in the thickness direction.
[0071] With reference to FIGS. 9 to 12, a state where the plug and
the socket are being engaged, a state where the plug and the socket
have been engaged and a state where the engagement between the plug
and socket is released will be described.
[0072] FIG. 10 is a cross-sectional view showing the engagement
between the plug and the socket according to the above exemplary
embodiment. FIG. 11 is a cross-sectional view showing a state where
the plug and the socket are being engaged according to the above
exemplary embodiment. FIG. 12 is an enlarged cross-sectional view
showing a state in which the engaging portion is pushed out by
flexure of the manipulation portion in the above exemplary
embodiment.
[0073] As shown in FIGS. 9 and 11, when a pair of engaging portions
14, which are located at the tip ends of the legs 12 inserted
through the insertion opening 22, are guided by the guide surfaces
25 to reach the engaged portions 24, the pair of legs 12 are
elastically deformed to be respectively engaged with the engaged
portions 24.
[0074] On the other hand, as shown in FIGS. 10 and 12, by pressing
the connecting inclined portion 14D, the projection 27B elastically
deforms the legs 12 in the thickness direction while sliding on the
connecting inclined surface 14C. With this operation, the
engagement between the engaging portions 14 and the engaged
portions 24 is released and the plug 10 is pushed out toward the
insertion opening 22.
[0075] In the above exemplary embodiment, the following advantages
are attainable.
[0076] In the front release buckle 1 according to the exemplary
embodiment, since the engaging portion 14 of the plug 10 projects
not in the thickness direction but in the width direction, the
thickness of the buckle is not increased but can be reduced.
Accordingly, for instance, when the front release buckle 1 having a
small thickness is used in a rucksack or the like, a position where
the buckle is attached in the rucksack is not limited because of
the small thickness of the buckle. Moreover, because of the small
thickness of the buckle 1, the buckle is unnoticeable to cause no
adverse effects on a whole design of the rucksack or the like.
[0077] In the front release buckle 1 of the exemplary embodiment,
the manipulation portion 27A is flexed toward the engaging portion
14, whereby the projection 27B presses the connecting inclined
surface 14C. At this time, since the projection 27B is flexed
toward the engaging portion 14 while sliding on the connecting
inclined surface 14C, the engagement between the engaging portion
14 and the engaged portion 24 is released while the engaging
portion 14 is pushed out toward the insertion opening 22 of the
socket 20. Accordingly, when the manipulation portion 27A is
pressed, the plug 10 is separated and pushed out from the socket
20. Thus, the plug 10 can be reliably separated from the socket 20
by only pressing the manipulation portion 27A.
[0078] In the front release buckle 1 of the exemplary embodiment,
since an angle of the connecting inclined surface 14C is 15
degrees, the projection 27B can slide smoothly on the connecting
inclined surface 14C. Accordingly, when the manipulation portion
27A is pressed, the plug 10 is separated and smoothly pushed out
from the socket 20. Thus, the plug 10 can be more reliably
separated from the socket 20 by only pressing the manipulation
portion 27A.
[0079] In the front release buckle 1 of the exemplary embodiment,
since the pair of the holders 16 to position and hold the plug 10
and the socket 20 are provided, the engagement between the engaging
portion 14 and the engaged portion 24 can be reliably made.
Moreover, for instance, when a twisting stress is applied on the
plug 10 and the socket 20, the plug 10 and the socket 20 are not
displaced, so that the engagement between the engaging portion 14
and the engaged portion 24 can be reliably maintained without any
possibility of being released, whereby a function as a buckle is
achievable.
[0080] In the front release buckle 1 of the exemplary embodiment,
since the legs 12 projecting from the base 11 are closer to the
manipulation portion 27A than the holders 16 are, a slight flexure
of the manipulation portion 27A when being pressed is required for
pressing the engaging portion 14. Accordingly, even when the
thickness of the front release buckle 1 is reduced, the plug 10 can
be separated and pushed out from the socket 20 by pressing the
manipulation portion 27A. Consequently, the thickness of the front
release buckle 1 can be further reduced.
Modifications
[0081] It should be noted that the invention is not limited to the
above arrangements of the exemplary embodiments but encompasses the
following modifications.
[0082] The structure of the pair of legs 12 is not limited to the
structure that the pair of legs 12 are connected with each other
through the connecting inclined portion 14D as described in the
above exemplary embodiment. However, as shown in FIG. 13, the pair
of legs 12 may be configured to be independent without being
connected with each other. In such a case, it is preferable to
increase a width of the projection 27B so as to press the inclined
surface 14A.
[0083] The engaging portion 14 may not be the projection extending
outward in the width direction of the legs 12 from the tip end of
each of the legs 12, but, as shown in FIG. 14, may be a projection
extending inward in the width direction, in which the inclined
portion 14B may be provided on a side opposite to the tip end of
each of the legs 12 in the insertion direction.
[0084] Further, the engaging portion 14 is not necessarily formed
in an L-shape. As shown in FIG. 15, the engaging portion 14 may be
provided by a single body.
[0085] Moreover, the legs 12 are not necessarily formed in a pair.
As shown in FIG. 16, the legs 12 may be provided by three legs.
INDUSTRIAL APPLICABILITY
[0086] The invention is usable as a front release buckle that
connects a belt and is provided with a pair of lock arms.
Explanation of Codes
[0087] 1: front release buckle [0088] 10: plug [0089] 11: base
[0090] 12: leg(s) [0091] 14: engaging portion(s) [0092] 14A:
inclined surface(s) [0093] 14B: inclined portion(s) [0094] 16:
holder(s) [0095] 20: socket [0096] 21: body [0097] 22: insertion
opening [0098] 23: housing space [0099] 24: engaged portion(s)
[0100] 27A: manipulation portion [0101] 27B: projection
* * * * *