JPH09280227A - Fastener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To unlock the locked condition of a locking leg of a fastener in which the locking leg is press fitted in a locking hole cut in a panel and locked thereto from the fastener. SOLUTION: Engagement release arms 3, 3 are suspended matching with a locking leg 2 suspended from a lower surface of a fastener main body 1, working parts 18, 18 of the engagement release arms 3, 3 are faced to an outer circumferential surface of the locking leg 2, pressing parts 17, 17 of the arms are projected in the outer space in which the pressing parts are not interfered by a panel and the fastener main body 1, the pressing parts 17, 17 are pressed to allow the working parts 18, 18 against the circumferential surface of the locking leg 2 for contraction of the diameter, engagement of a locking part 15 to be locked to a locking hole (b) in the panel is unlocked to take out the locking part from the locking hole (b) in the panel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic stopper used for fixing parts to a panel portion of a main body in electric appliances, automobiles and the like.

[0002]

2. Description of the Related Art A stopper made of plastic material, particularly a stopper for fixing panels to each other in a contact surface or for fixing parts to the panel, has locking legs inserted in locking holes formed in the panel. By passing it through, it is used to secure the object. The locking legs in this stopper are roughly classified into two types, so-called canoe type and anchor type.

The former canoe-shaped locking leg is press-fitted into the locking hole by utilizing expansion and contraction of the trunk of the leg and fixed by utilizing the elastic restoring force of the material, or locking provided on the outer peripheral surface of the trunk. There are things such as hooks that are hooked to the edges of the holes to prevent them from being pulled out.The latter anchor-type locking legs are designed so that the anchor-type locking pieces with spring properties are recessed in the panel locking holes. The locking piece is extended on the opposite side of the panel and hooked on the panel surface or the edge of the locking hole so that it cannot be pulled out and is fixed.

The difference between the types of the locking legs is individually selected according to the purpose of use, and in the case of requiring a strong and reliable fastening, mainly the anchor type locking legs that cannot be pulled out are selected. , Canoe-shaped withdrawable locking legs are mainly selected for those that can be easily attached and detached and replaced with light ones.

However, even in the case of the locking leg that holds the locking claw or the locking piece in the locking hole of the panel so as not to come off, the locking leg or the locking piece can be directly touched by hand or by a tool. If it is narrowed, it can be easily removed, and the work can be performed easily, for example, when exchanging parts, but in many cases, the locking means of the locking leg locks on the opposite side of the panel. However, it is usually impossible to put a hand or a tool there and it is often impossible to release the locked state.

[0006]

SUMMARY OF THE INVENTION In view of the above-described case, the present invention mainly operates a locking leg that locks in a state in which it cannot be pulled out on the side where work can be freely performed, and releases the locked state. An object of the present invention is to provide a locking device which enables removal of the stopper itself, disconnection of panels from each other, or removal of parts to be fixed to the panel.

[0007] As described above, the canoe-shaped locking legs, particularly the locking legs that are locked in the locking holes of the panel by utilizing the elasticity of the body of the legs, are easier to unlock than the locking force. This is what was aimed at, but as long as it is possible to easily release the locked state even with these things, it is possible to change to an anchor type locking leg that is impossible or difficult to release the locked state. There are many.

The present invention was developed in order to meet such a demand, and the stopper is provided with a releasing means for releasing the engagement state of the engaging legs so that this means can be freely operated on the operating side. It is intended to provide a stopper capable of easily releasing the locked state.

Further, according to the present invention, in addition to using the releasing means for releasing the locked state, the engaging depth of the locking leg inserted into the locking hole of the panel can be adjusted to change the thickness of the panel. It is an object of the present invention to provide a stopper capable of absorbing and expanding a proper locking tolerance.

[0010]

In order to achieve the above-mentioned object, the present invention press-fits a diameter-reducible locking leg vertically extending from a stopper main body into a locking hole formed in a panel to form a locking portion. In a stopper adapted to be hooked and fastened to an edge portion of a locking hole, an engaging disengaging arm is vertically provided to the stopper main body in alignment with the locking leg, and an action portion of the arm is provided with the engaging portion. While facing the stop leg, the pressing operation part is projected into an outer space not disturbed by the panel and the fastener main body, and the pressing operation part is pressed to press the action part against the locking leg to reduce the diameter. Another object of the present invention is to provide a stopper configured to release the engagement of the locking portion.

Further, according to the present invention, the action portion of the disengagement arm is made to face the vicinity of the locking portion of the locking leg, and the locking portion is directly pushed and retracted by the pressing operation of the pressing operation portion so as to be in the locked state. It is to provide a stopper that can be released.

Another object of the present invention is to provide a stopper characterized in that a pair of the engagement releasing arms are provided so as to face each other with a locking leg interposed therebetween.

Further, according to the present invention, the engaging disengagement arm is bent in a substantially L-shape in the middle of its length, and the bent portion is used as a pressing operation portion so as to protrude to the outside of the stopper main body, while the free end is actuated. Another object of the present invention is to provide a stopper which is adapted to face the outer peripheral portion of the locking leg.

Further, the present invention is characterized in that the disengagement arm has a thin spring portion in the area of the stopper main body and the pressing operation portion, and a thick rigid portion in the area of the pressing operation portion and the acting portion. To provide a stop.

Further, according to the present invention, the locking leg forms a retracting space in the central portion to enable diameter reduction, while forming a locking portion on the outer peripheral surface in the middle of the length direction, and the locking portion has It is an object of the present invention to provide a fastener characterized in that a latching portion for engaging the action portion of the disengagement arm is provided immediately above.

Further, the present invention provides a stopper characterized in that an auxiliary elastic piece is interposed between the stopper main body and an engagement releasing arm which is hung from the main body. . Next, the present invention will be described in detail based on the embodiments shown in the drawings, and the features thereof will be clarified.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an example in which the present invention is applied to a cord stopper (cord clamp) for binding cords and fixing them to a panel. FIG. 1 is a front view, FIG. 2 is a right side view, and FIG. 3 is a bottom view, and FIG. 4 is a central longitudinal rear view.
Reference numeral 1 in the drawing denotes a stopper mainly for clamping the code a,
Reference numeral 2 denotes a locking leg vertically extending from the lower surface of the main body, and 3 denotes an engagement releasing arm vertically extending from the lower surface of the main body 1 with the locking leg 2 placed in the middle.

The stopper main body 1 is composed of a thick rectangular plate portion 1a and a pair of binding arms 1b and 1c extending from the upper surfaces of both ends of this portion. The binding arm 1b extending from the upper surface at one end extends an arm portion 6 from a protruding base portion 4 through a thinned hinge portion 5, and extends an engaging portion 7 bent in a U shape from a free end of the arm portion. The other binding arm 1c extends from the upper surface of the other end of the portion 1a so as to oppose the binding arm 1b.

The binding arm 1c is formed in a plate shape corresponding to the front and rear width of the portion 1a, and is curved outward in a convex arc shape. The outer convex arc surface portion has two strips along both side edges. A group of check claws 8 are arranged in a row, and a guiding groove 9 is formed between the groups of claws.

The engaging portion 7 of the binding arm 1b is the binding arm 1 described above.
The cord a is engaged with c to hold the cord a, and the U-shaped space 10 is formed into an arc-shaped space according to the curve of the bundling arm 1c, and the inside of the space 10 is substantially the entire bundling arm 1c. Is formed to an acceptable size. On the inner side surface of the piece on the free end side, the guide projection piece 1 is provided along the longitudinal direction at the central portion.
1, the check claw groups 12 and 12 are arranged in a row along both sides thereof.

The bending of the binding arm 1c is due to the other binding arm 1b.
Along the arc drawn around the hinge part 5 of
When the binding arm 1b is bent around the hinge portion 5 as a base point, the free end engaging portion 7 faces the tip end of the binding arm 1c, and when it is further folded, the arm portion 6 can be collapsed while receiving it in the space portion 10. I am doing it.

When the binding arm 1c is received in the space portion 10, the engaging portion 7 inserts its guide protrusion 11 into the groove 9,
At the same time as the grooves are fitted into the guides, the check claw group 8 and the check claw group 12 are engaged with each other to be joined, and the main portion 1
The cord a is confined and bound between a and the arm portion 6. In this binding, the piece on the free end side of the engaging portion 7 is opened to the outside by utilizing the elasticity of the material, and the check claw group 12 is floated to disengage and release the check claw group 8. It has become possible.

On the other hand, the locking leg 2 is formed in a so-called hollow canoe shape in which the central portion is longitudinally cut along the length direction of the leg to form a retreat space 13, and the left and right outer peripheral surfaces thereof are substantially formed. The concave portion 14 is formed symmetrically in the central portion, the thin portion is formed on the locking leg itself, and the locking portion 15 is formed on the edge of the concave portion 14 on the leg end side.
Is formed on the upper edge with a hooking portion 16.

The shape of the cross section of the locking leg 2 is determined in correspondence with the locking hole (locking through hole) b attached to the panel B. Here, the locking hole b is formed in a perfect circle. 3 and FIG. 5 are formed to have a substantially elliptical shape, and the left and right locking portions 15, 15 are located in the major axis direction, and when in the normal state, this locking portion 15, 15 is a locking hole b
It exceeds the diameter of and protrudes outside.

The engagement releasing arms 3 and 3 serve as a releasing means for releasing the locked state after the locking leg 2 is locked in the locking hole b of the panel. Portion 1
It is provided so as to be bilaterally symmetrical from the lower surfaces of both ends of a.

Each of the disengagement arms 3 and 3 is formed in a waist-folded shape which is bent into a substantially L-shape, and the base end side region connected to the main portion 1a is thinly formed so that the spring portion 3a is formed. The region on the free end side is thickened to form the rigid portion 3b, and the bent portion, which is the connection point between these two portions, is further projected to the outside of the portion 1a to form the pressing operation portion 17, while the tip of the rigid portion 3b, That is, the free end faces the concave portion 14 provided on the outer peripheral surface of the locking leg 2 as the acting portion 18.

As shown in the drawing, the engaging disengaging arms 3 and 3 have the operating portion 18 exposed to the recess 14 of the locking leg 2. However, in the normal state, even if the operating portion 18 faces below the position of the recess 14. Well, actually, it suffices to face the concave portion 14 when the locking leg 2 is engaged with the locking hole b. Further, in the drawing, the action portion 1
Although 8 is provided separately from the locking leg 2, they may be connected via a thin piece or the like.

The stopper of the present invention is constructed as described above, and is formed by using a thermoplastic synthetic resin such as nylon having required rigidity and elasticity as a material. The inventive stop embodied as this cord clamp will now be further described through the practice of use.

This stopper is used for fixing the cord to the panel portion of the body of the automobile or the main body of the electric equipment, and the fixing to the panel B is engaged with the engaging through hole b formed therein. It is done by pushing in 2. The engaging leg 2 retracts the locking portion 15 that bulges by pushing, using the retreat space 13, and restores it when it passes through the locking hole, and locks it on the edge of the locking hole b on the opposite side of the panel B. The locking will be completed.

When the locking leg 2 is pushed in, both of the disengagement arms 3, 3 hanging down to the left and right contact the rigid portions 3b, 3b against the surface of the panel as the locking leg enters the locking hole. When the engaging portion 15 engages with the edge of the engaging hole b, the spring portions 3a, 3a are bent and deformed, and the operating portion 17 and the rigid portion 3 are bent around the spring portion.
Repulsive force will be stored in each part of b and 3b.

Therefore, the locking portion 15 of the locking leg 2 is locked to the locking hole b by the restoring force of the leg itself, and at the same time strongly locked by the repulsive force of the engagement releasing arms 3 and 3. Become. On the other hand, the symmetrical disengagement arms push up both ends of the portion 1a to stably support the panel in cooperation with the engagement of the locking legs 2, and further elastically support the panel B. It absorbs the thickness of the plate and is fixed without rattling (see FIG. 6).

The cord a may be bound before or after the locking leg 2 is fixed, but the binding arms 1b, 1 which are opened may be bundled.
After passing the cord between c, the binding arm 1b is tilted around the hinge portion 5 as a fulcrum, and the check claw group 12 of the engaging portion 7 is engaged with the check claw group 8 of the bundling arm 1c to restrain it. It will be.

The arrangement of the claws of the non-return claw groups 8 and 12 is for adjusting the thickness of the cord bundle, and the distance between the portion 1a and the arm 6 is adjusted by the depth of pushing of the engaging portion 7. The binding is adjusted so that it can be tied up firmly.
The binding state of the cords can be released by pushing the engaging portion 7 outward and removing the check claw group 12 as described above.

In this way, the fastener in which the cord a is fixed to the panel B can release the binding of the cord a as described above, while the locking holes b of the panel can be operated by operating the engagement releasing arms 3 and 3. It is possible to pull out and remove the locking leg 2 engaged in the.

FIG. 7 shows this releasing operation.
When the operation portion 17 protruding outside the main portion 1a is pushed inward, the rigid portion 3b is exposed to the surface of the panel B,
The locking leg can be reduced in diameter by inserting it into the recess 14,
As a result, the locking portion 15 can be removed from the edge of the locking hole b, and the engagement leg can be pulled out.

When the operating portion 17 is pushed in, the concave portion 14 is
Because the action portion 18 is surely engaged with the outer peripheral surface of the locking leg 2 and the diameter thereof is surely reduced, the engaging portion is provided with a thin portion to facilitate bending and to be engaged. The engaging portion 16 is provided in order to easily disengage the portion 15, and the hooking portion 16 is provided in cooperation with the recess 14 to prevent the action portion 18 from coming off.

Next, FIGS. 8 and 9 show another embodiment of the present invention based on the cord clamp described above. In this embodiment, the disengagement arm 3 is bent and formed in an L shape.
Tongue-shaped auxiliary elastic piece 1 from the lower surface of the main portion 1a
This is the case when 9 is installed vertically. The elastic piece 19 extends obliquely outward from the central portion of the lower surface of the portion 1a, that is, in the vicinity of the position where the locking leg 2 hangs down, and the lower end portion thereof is directly above the rigid portion 3b of the disengagement piece 3. I am doing it.

The auxiliary elastic piece 19 has a locking hole b in the panel B.
When the engaging legs 2 are engaged with the engaging disengagement arms 3 and 3 are brought into contact with the surface of the panel B and compressed, the lower end is brought into contact with the upper surface of the rigid portion 3b to release the engagement. It assists the pressing force of the arms 3 and 3, and at the same time, secures the stopper main body in a stable locked state.

Further, the auxiliary elastic piece 19 is used for the disengagement arm 3.
When the is compressed, it acts to prevent the tip action portion 18 of the rigid portion 3b from floating. That is, when the operating portion 17 is pushed inward to disengage the locking leg 2, the rigid portion 3
b moves along the surface of the panel B, and the acting portion 18 abuts on the outer peripheral surface of the locking leg, that is, the concave portion 14 in this case, and guides so that the pressing and compressing diameter can be formed substantially at a right angle.

In the illustrated embodiment, the locking leg 2 is in the form of a canoe as described above, but the present invention can be effectively carried out even if the locking leg is of the anchor type as described above. You can Although not shown here, a pillar is vertically provided from the center of the lower surface of the portion 1a of the main body 1 instead of the canoe-shaped locking leg 2, and a V-shaped locking piece is extended to the lower end thereof. Installed to form anchor-type locking legs,
When a locking portion is provided on the outer surface of the locking piece so that the working portion 18 of the disengagement arm 3 faces from the outside toward the free end of the locking piece, the illustrated canoe is shown. It has the same form as the locking legs of the shape.

In the case of this anchor type locking leg, when it is inserted into the locking hole b of the panel B and mounted, the locking portion of the locking piece is engaged with the edge of the locking hole on the opposite side of the panel. Needless to say, the free end of the disengagement arm 3 faces the operating portion 18 of the disengaging arm 3 so that the free end remains on the front side of the panel B, and when disengaging, the operating portion 18 pushes inward to bend. The engaging portion can be disengaged.

As described above, according to the present invention, the locking leg 2 is formed so that its diameter can be reduced, and the diameter of the locking leg can be reduced by pushing it toward the locking leg 2 from the outside. It is configured by including the disengagement arm 3 that disengages the engagement hole from the engagement hole. As described above, the engagement leg 2 may be a canoe type or an anchor type. And
Furthermore, the disengagement arm 3 has an operating portion 17 that projects outward.
However, the present invention can be implemented as long as it has a working portion 18 facing the locking leg and is compressible.

Therefore, in the illustrated embodiment, a pair of left and right disengagement arms 3 are provided so as to sandwich the locking leg 2 vertically extending from the central portion of the lower surface of the main body. When one locking portion is provided, only one disengagement arm needs to be provided to release this engagement, and it is not always required to be symmetrical.

In the embodiment, the present invention has been described by taking the cord clamp as an example. However, even if the locking means provided on the main body 1 of the stopper is of hook type, the locking claw is provided upright. May be, depending on the intended use of the fastener 1
It goes without saying that a can be arbitrarily selected.

[0045]

As described above, according to the present invention, the locking leg inserted and locked in the locking hole of the panel can be disengaged and pulled out by the pressing operation of the disengaging arm on the main body of the stopper. Therefore, it is possible to remove the stopper even at a place where the hand cannot be inserted on the opposite side of the panel, and therefore, the stopper can be easily pulled out without being forcibly removed or destroyed and can be reused.

Further, the disengagement arm for disengaging the locking leg mainly intervenes between the panel and the stopper so as to elastically hold the two and to compress the locking leg. It is possible to change the distance between the locking portion and the locking portion, and this has the advantage that it is possible to absorb a change in the plate thickness of the panel and always secure a stable locked state, and at the same time, it is possible to absorb backlash.

[Brief description of drawings]

FIG. 1 is a front view when the present invention is applied to a cord stopper.

FIG. 2 is a right side view of the cord stopper.

FIG. 3 is a bottom view of the cord stopper.

FIG. 4 is a central longitudinal rear view of the cord stopper.

FIG. 5 is a central cross-sectional bottom view of the locking leg of the cord stopper.

FIG. 6 is a central longitudinal rear view for explaining the usage state of the cord stopper.

FIG. 7 is a rear view illustrating a state in which the engagement legs of the cord stopper are released.

FIG. 8 is a front view of a main part showing another embodiment.

FIG. 9 is a central longitudinal front view of a main part showing a usage state in another embodiment.

[Explanation of symbols]

 1 Main body of stopper 1a Main part 1b Bundling arm 1c Bundling arm 2 Locking leg 3 Engagement release arm 3a Spring part 3b Rigid part 13 Retreat space of locking leg 14 Recessed portion 15 Locking portion 16 Locking portion 17 Operating portion 18 Working part 19 Auxiliary elastic piece

Claims (7)

[Claims] 1. A stopper formed by press-fitting a diameter-reducible locking leg vertically extending from a stopper mainly into a locking hole formed in a panel, and locking the locking portion to an edge of the locking hole. In the main body of the stopper, an engagement releasing arm is vertically provided so as to be aligned with the engaging leg, and an operating portion of the releasing arm is exposed to an outer peripheral surface of the engaging leg, while a pressing operation portion is provided on the panel and the panel. A stopper configured to be projected into an external space that is not obstructed by the main body of the stopper, and to press the pressing operation portion to press the action portion against the locking leg to reduce the diameter thereof to release the engagement of the locking portion. Ingredient 2. The locking leg according to claim 1, wherein the locking leg has a retracting space formed in a central portion thereof so as to be capable of reducing the diameter, and a locking portion which bulges on an outer peripheral surface in the middle of the length direction is provided. Stoppers characterized by that. 3. The stopper according to claim 1, wherein a pair of disengagement arms are provided so as to face each other with a locking leg interposed therebetween. 4. The disengagement arm according to claim 1 or 3, wherein the middle of the length of the disengagement arm is bent into a substantially L-shape, and the bent portion is used as a pressing operation portion to protrude outward of the main body of the stopper.
A stopper characterized in that the free end faces the outer peripheral surface of the locking leg as an acting portion. 5. The engagement releasing arm according to claim 4, wherein the areas of the stopper main body and the pressing operation portion are thin spring portions,
A stopper characterized in that the areas of the pressing operation portion and the action portion are thick and rigid portions. 6. The locking leg according to claim 1, wherein the locking leg has a receding space formed in the center thereof to allow the diameter to be reduced, while the locking leg is formed on an outer peripheral surface in the middle of the length direction. A stopper characterized in that a latching portion for engaging with the action portion of the disengagement arm is provided immediately above the stopper portion. 7. The stopper according to claim 4 or 5, wherein an auxiliary elastic piece is interposed between the stopper main body and an engagement release arm that is hung from the main body.