JPH0540730Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a synthetic resin buckle that is used for attaching and detaching hanging belts for clothing, chin straps for helmets, etc., which are composed of a male member and a female member. be.

(Prior art) Conventionally, this type of synthetic resin buckle has been made by inserting an anchor-shaped male member into a female member, and attaching the anchor-shaped ends to both the left and right ends, as disclosed in, for example, Japanese Utility Model Publication No. 809/1983. The male member and the female member are engaged by engaging the engagement stepped portion inside the female member, and an external force is applied from the outside in the direction of narrowing the distance between the two ends of the anchor shape using the operating piece. As disclosed in Japanese Utility Model Publication No. 51-1934, there is a structure in which an arrow-shaped male member is opened and closed from side to side within a female member. There are known devices that are configured to be gripped with interlocking claws.

(Problem to be solved by the invention) However, since all of the above-mentioned known synthetic resin buckles are engaged by hooking a small number of claws on the engagement step, the male member and the female member are separated in the engaged state. There were problems in that the claws were easily damaged when a large tensile force was applied, and the claws were worn out due to frequent engagement and disengagement, leading to early loss of engagement function.

The present invention aims to solve these problems and provide a synthetic resin buckle that has high engagement strength, can be engaged and released reliably, and can ensure engagement and disengagement functions over a long period of time. The purpose is

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a synthetic resin buckle with the following configuration.

That is, there is a male member having a belt attachment part at one end and an insertion piece with a locking hole at the other end, and a bottom plate having a belt through hole at one end, and a male member at the other end. A guide wall is erected to guide the insertion piece of the male member inserted from the insertion opening, and a sliding groove is formed along the outer bottom corner of the guide wall. A lock pawl that gradually rises from the side to form a locking step, and a spring plate that follows this lock pawl and whose free end is located behind the lock pawl and elastically bends in a direction perpendicular to the plane of the bottom plate are integrated. The molded female member main body and both side edges of the top plate are made to hang down to form a sliding protrusion that engages with the sliding groove of the female member main body, and the male member insertion side becomes an inclined surface on the lower surface of the top plate. The female part cover is formed with a pressing protrusion, and the sliding protrusion of this female part cover is engaged with the sliding groove of the female member main body, so that the female part cover can freely slide within a predetermined range with respect to the female member main body. constitutes a female member that is
Slide the female part cover so that the lock hole made in the insertion piece of the male member inserted from the insertion side of the female member engages with the lock pawl of the female member main body, and press the pressing protrusion of this female part cover. The gist of the invention is a synthetic resin buckle characterized in that the insertion piece is pressed against a spring plate.

(Example) Next, an example of the present invention will be described based on the drawings.

FIG. 1 is a plan view of a synthetic resin backing in an exploded state according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the same in an exploded state, FIG. 3 is a plan view of the assembled state, FIG. 4 is a cross-sectional view of the assembled state, and FIG. 5 is a rear view of the assembled state. The backing is composed of a male member 1A, a female member main body 2, and a female part cover 3.

In the male member 1A, a belt mounting hole 5 having regulating walls 8 on both sides is integrally formed at one end of the male member main body 4, and between the regulating walls 8 on the belt mounting hole 5, the male member main body 4 and A belt loop ring 6 formed as a separate member is held by a holding protrusion 7 that is integrally formed upright with the male member main body 4 and has a hook-shaped side surface. An insertion piece 10 having a rectangular locking hole 9 extends from the other end thereof, and insertion restriction ends 10a are formed on the left and right sides of the base end of the insertion piece 10.

Further, the female member body 2 has insertion pieces 10 of the male member 1A inserted through an insertion opening 13 at the other end on both sides of a bottom plate 12 having a belt through hole 11 at one end.
and insert the end surface of the abutment regulating end 13a.
A guide wall 14 is provided upright, and a slide groove 14 is provided along the outer bottom corner of the guide wall 14.
a, and in the center of the bottom plate 12, there is a lock pawl 16 that gradually rises from the insertion opening 13 side and forms a locking step 15, which locks when the insertion piece 10 of the male member 1A is inserted. The free end 17 is formed at a position that coincides with the hole 9 and continues from the lock pawl 16.
is located at the same height behind the lock pawl 16, and has a spring plate 18 that is resiliently bent in a direction perpendicular to the plane of the bottom plate 12.

Furthermore, the female part cover 3 has side walls 20 hanging down from both side edges of the top plate 19, and has a sliding protrusion 21 formed on the inner surface of the lower end thereof to engage with the sliding groove 14a of the female member main body 2, and A pressing protrusion 23 having an inclined surface 22 on the male member insertion side is formed at approximately the center of the lower surface of the plate 19 at a position where it is placed above the male member insertion piece 10 when the female part cover 3 is slid. A recess 24 is formed on the lower surface of the plate 19 on the male member insertion side, into which the holding protrusion 7 of the male member 1A enters and prevents the male member from wobbling.

Of the parts configured as described above, the female part cover 3 is placed over the female member main body 2, and the sliding protrusion 21 of the female part cover 2 is engaged with the sliding groove 14a of the female member main body 2. , constitutes a female member 1B in which the female part cover 3 is slidable with respect to the female member main body 2, and each of the female member 1B and the male member 1A includes:
It is used by attaching the belts B1 and B2 and engaging and connecting them (see FIGS. 3 and 4) and separating them.

The engagement connection between the female member 1B and the male member 1A is performed through the insertion port 13 of the female member 1B to the male member 1A.
After inserting the insertion piece 10, the female part cover 3 is slid toward the insertion side.

In this case, when the insertion piece of the male member 1A is inserted into the female member 1B until its insertion restriction end 10a hits the insertion abutment end 13a of the guide wall 13 of the female member main body 2, the lock hole 9 formed in the insertion piece 10 is locked. is located on the lock pawl 16 of the female member main body 2. When the female part cover 3 is slid in this state, the pressing protrusion 23 of the female part cover 3 is pressed against the inclined surface 22 of the female part cover 3.
is guided by the insertion piece 10, presses the insertion piece 10 against the spring plate 18, and locks the lock claw 1.
At the same time, the holding protrusion 7 of the male member 1A comes to be engaged with the recess 24 of the female part cover 3.

In addition, when releasing the engagement, the female part cover 3
This is done by sliding it in the opposite direction to the above. When the female part cover 3 is slid, the pressing protrusion 23 moves backward from above the insertion piece 10.
The pressure by the pressing protrusion 23 is released, and the insertion piece 10
comes to float due to the restoring force of the spring plate 18, and the lock hole 9 comes to be separated from the lock pawl 16.

(Effects of the invention) The synthetic resin buckle of the invention explained above is
The insertion piece of the male member is inserted from the insertion side of the female member in which the female part cover is placed on the female member main body, and the sliding protrusion is engaged with the sliding groove so that the female part cover can freely slide relative to the female member main body. When the female member is inserted, the lock hole formed in the insertion piece will be located on the lock claw of the female member main body. When the female part cover is slid in this state, the pressing protrusion of this female part cover rides on the insertion piece, presses the insertion piece against the spring plate, and acts to fit the lock hole into the lock pawl. .

This locking pawl gradually rises from the insertion side to form a locking step, so when the locking hole is fitted into this, the engagement strength is high and reliable engagement can be achieved. .

In addition, when the female part cover is slid in the opposite direction from when it is engaged and the pressing protrusion is moved backward from above the insertion piece, the pressure from the pressing protrusion is released and the insertion piece floats up due to the restoring force of the spring plate. However, the engagement between the lock hole and the lock pawl is released, and the engagement between the female member and the male member can be easily released and separated by simply pulling the male member.

Therefore, according to the present invention, it is possible to provide a synthetic resin buckle that has a high engagement strength, can perform reliable engagement and release, and can ensure the engagement and disengagement function over a long period of time.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a synthetic resin buckle according to an embodiment of the present invention in an exploded state, FIG. 2 is a sectional view of the same in an exploded state, FIG. 3 is an separated plan view of an assembled state, and FIG. 4 is a sectional view of an assembled state. FIG. 5 is a rear view of the assembled state. 1A...male member, 1B...female member, 2...female member main body, 3...female part cover, 4...male member main body,
5... Belt attachment hole, 6... Belt loop ring, 7
...Retaining protrusion, 8...Regulation wall, 9...Lock hole,
10...insertion piece, 10a...insertion restriction end, 11...
... Belt through hole, 12 ... Bottom plate, 13 ... Insertion port, 13a ... Insertion contact end, 14 ... Guide wall,
14a...Sliding groove, 15...Latching step, 16
... Lock claw, 17 ... Free end, 18 ... Spring plate, 19 ... Top plate, 20 ... Side wall, 21 ... Slide protrusion, 22 ... Inclined surface, 23 ... Press projection.

Claims (1)

[Claims for Utility Model Registration] Consisting of a male member 1A, a female member main body 2, and a female part cover 3, the male member 1A has a belt attachment hole 5 at one end.
The female member main body 2 has an insertion piece 10 with a locking hole 9 formed at the other end thereof, and the female member body 2 has an insertion piece 10 formed at the other end on both sides of a bottom plate 12 having a belt through hole 11 formed at one end thereof. Insertion piece 10 of male member 1A inserted from insertion port 13 on side
A guide wall 14 is provided upright to guide the guide wall 14, and a sliding groove 14a is formed along the outer bottom corner of the guide wall 14, and a groove 14a for sliding is formed in the center of the bottom plate 12, gradually protruding from the insertion side. A structure in which a lock pawl 16 forming a stop 15 and a spring plate 18, which is connected to the lock pawl 16 and whose free end is located behind the lock pawl 16 and elastically bends in a direction perpendicular to the plane of the bottom plate, are integrally formed. The female part cover 3 has both side edges of the top plate 19 hanging down to fit into the sliding groove 14a of the female member main body 2.
A sliding protrusion 21 is formed to engage with the slide protrusion 21, and a pressing protrusion 23 is formed in the center of the lower surface of the top plate 19, and the male member insertion side becomes the inclined surface 22. The strip 21 is engaged with the sliding groove 14a of the female member main body 2 to constitute a female member 1B in which the female part cover 3 can freely slide within a predetermined range with respect to the female member main body 2, and the insertion of this female member 1B The female part cover 3 is slid so that the lock hole 9 formed in the insertion piece 10 of the male member 1A inserted from the side is engaged with the lock claw 16 of the female member main body 2. A synthetic resin buckle characterized in that a pressing protrusion 23 presses an insertion piece 10 against a spring plate 18.