JPH0451206Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a device that is inserted into a mounting hole made in one of two plates from the surface and locked in a penetrating manner, and the part that protrudes from the back side of the plate is attached to the other plate. Two plates are joined in contact by hooking the opening of the locking hole or the edges of the plates, and the locking of the lower plate is released by operating from the surface side of the plate that overlaps the above, and the two plates are joined. This relates to a latch for joining plates that is molded from a synthetic resin that can be unraveled.

The present applicant filed an application regarding the above-mentioned latch in 1983.
-29560 (published in Utility Model Publication No. 58-133608), the present invention is an improvement on the latch related to this existing proposal, especially to make handling easier and improve workability. be.

That is, the latch according to the existing proposal has a head, a locking leg that hangs down from the lower surface of the head and is provided with a non-returning pawl in the middle of its length, and a hinge section at the leg end of the locking leg. The head is connected to the head and is folded back using the hinge portion as a fulcrum, and has a knob portion provided at the free end that projects upwardly from one side edge of the head, and an operating arm provided with an engaging claw on the outer surface portion. , the locking leg is inserted into a mounting hole provided in an overlapping upper plate, and the head and the non-return claw means engage the edge of the hole and are attached to the plate in a penetrating manner;
Next, the plates are connected by hooking the engaging claw of the operating arm protruding from the bottom surface of the upper plate into the through hole made in the lower plate or the edge of the plate, and this connected state is maintained. It is configured so that it can be released by operating a knob provided at the free end of the operating arm and disengaging the engagement claw, and can be opened and closed other than when the plates are fastened together, for example. It can be conveniently used as a cover plate obturator, etc.

In addition to the advantages in use, this latch also has manufacturing advantages in that the entire latch can be integrally molded from synthetic resin, and can be mass-produced at a low cost. During the process, the operating arm is formed so that it hangs from the leg end of the locking leg via a thin hinge. When in use, the operating arm is folded back using the hinge as a fulcrum, and the knob provided at this free end is attached to the head. It must be lifted upward so that the operating arm is aligned with the side of the locking leg.

However, raising the operating arm in this way will cause repulsion at the hinge, and placing it along the locking leg will also push the auxiliary biasing spring piece that may be interposed between them. Therefore, in the previously proposed latch, the operating arm must be folded back each time it is used, and the latch must be held in the bent position with the fingers to attach it to the mounting hole in the plate. It had been.

The present invention was devised in order to solve this problem in view of the above.The features of the present invention are as follows:
A locking leg portion is provided with a non-return claw means that deforms when pushed into a mounting hole provided in a plate such as a lid plate, passes through the mounting hole, and holds the plate between it and the lower surface of the head; A knob part is connected to the leg end of the leg part through a thin hinge part, is folded back along the side surface of the locking leg part using this hinge part as a fulcrum, and is provided at the free end. and an operating arm having an engaging claw on the outer surface thereof that engages an opening or an edge of another plate that is fixed to the lower surface of the plate such as the lid plate in contact with the lower surface of the plate. In the coupling latch, one side edge of the head and one side edge of the knob of the operating arm that protrudes above the head beyond the one side edge of the head, or adjacent to both side edges, respectively. Engagement parts that engage with each other are provided on the upper surface of the head and the lower surface of the knob part, so that the operating arm, which is folded back about the hinge part as a fulcrum, can be held in an upright shape along the side surface of the locking leg part. The object of the present invention is to provide a latch for connecting plates made of metal.

Below, the present invention will be explained based on the illustrated embodiment. Reference numeral 1 indicates a latch of the present invention molded from plastic, a plate portion 2 having a U-shaped planar shape, and a head consisting of an upright wall 3 standing from three sides of the outer edge of the plate portion. portion 4, a shaft portion 5 with a U-shaped cross section projecting downward from the three inner edges of the plate portion, and non-return claws 6, 6 standing obliquely upward from the lower edges of the opposing side walls 5a, 5a of the shaft portion 5. It has a stop leg part 7. That is, this locking leg part 7 is hollow, and the opposing side walls 5a, 5a and a connecting wall 5b connecting both side walls surround the hollow part, and the hollow part is open on the surface facing the connecting wall 5b, and the plate There is an atrium extending upwards at the inner edge of the section.

The above-mentioned connecting wall 5b extends downward almost straight beyond the position where the non-return claws 6 on both side walls grow, and ends.
The opposing side walls 5a, 5a have one side edge below the position where the non-return pawl 6 extends, inclined toward the connecting wall 5b and tapered so that its lower end coincides with the lower end of the connecting wall 5b.

A thin hinge portion 8 is provided at the lower end of the connecting wall 5b.
An operating arm 9 is integrally connected to the operating arm 9, which has a width that allows it to fit into the opposing gap between the side walls 5a, 5a, that is, into the hollow part of the locking leg 7.

The operating arm 9 extends upward from the hinge portion 9, and has a thickness that gradually increases outward from the hinge portion as a base point and has an outer surface inclined to the same extent as one edge of the opposing side wall 5a. It has a half part 9a, and an upper half part 9b which extends almost directly upward from the inner surface of the upper end of the lower half part and whose upper end projects above the upper surface of the U-shaped plate part 2 of the head part 4. A stepped engagement claw 10 is provided at the boundary between the upper end of the lower half 9a and the lower end of the upper half 9b.
At the upper end of the upper half 9b, a knob 11 is provided which fits inside the head 4 surrounded by the upright wall 3 and can move freely. Incidentally, as shown in the figure, the outer surface of the lower half portion 9a may be cut into a groove from just below the engaging claw 10 to save the amount of synthetic resin used.

As shown in FIGS. 1 and 2, this operating arm 9 has a locking leg 7 hanging directly below from the lower end of the connecting wall 5b of the main body.
By molding it integrally with the connecting wall and folding it back around the thin hinge part 8, it can face the connecting wall.

The head 4 and the knob 11 have an edge 1 that does not have an upright wall of the U-shaped plate part 2 of the head 4.
2 to make it easier to ride on the top of the head.
The upper surface of the head facing this edge and the edge 1 of the knob 11
An inclined surface 14 is formed on the lower surface facing 3 (in this embodiment, it is both the upper surface and the lower surface, but it may be either one of them). And furthermore, this edge 1
An engaging portion 1 that mutually engages with each of 2 and 13.
5 and 16 are provided so that when the operating arm 9 is folded back and raised at the hinge portion 8, they can be engaged and temporarily locked.

In addition, both or one of the connecting wall 5b and the operating arm 9 facing the connecting wall 5b (in this embodiment, the connecting wall 5b
b) is formed with a tongue-shaped auxiliary biasing spring piece 17 that protrudes into the hollow part of the locking leg 7, and is able to spring the inner surface of the operating arm raised from the hinge part 8 and push it outward. It's like this.

By the way, one plate, for example, the cover plate 18, which is fixed in a tangential manner with the latch of the present invention, has the above-mentioned check claw 6,
A mounting hole 19 is opened through which the entire locking leg 7 can pass by narrowing down the locking leg 6. Then, the latch of the present invention is attached to the cover plate by pushing the locking leg into this hole from the front side.

At this time, as the locking leg part 7 is inserted, the operating arm 9 is pressed by the edge of the mounting hole 19 and pushed into the hollow part of the leg, and the engaging claw 10 on the outer surface is retreated to pass through the hole. . Then, the non-return claws 6, 6 are deflected by the edge and pass through the mounting hole on the back side, and after passing, they are restored and engaged with the edge, so that they cooperate with the lower surface of the head 4 to form the edge of this hole. This will secure the attached state by holding it from the front and back.

On the other hand, the other plate facing the lid plate 18, for example, the body panel 20 of an automobile, has the non-return claws 6, 6.
The entire locking leg 7 including the locking leg 7 can be passed through.
The locking claw 10 of the operating arm 9 attached to the locking leg may be provided with an opening 22 having an opening edge 21 that does not allow the locking leg to pass through (see the dashed line in FIG. 6), or the panel 20 may be closed. One side edge 23 is connected to the opening edge 2
1 so that it faces the latch attached to the cover plate (see the two-dot chain line in Figure 6).

The latch of the present invention thus attached to the cover plate 18 approaches the panel 20 as the cover plate is closed, and brings the locking leg 7 closer to the opening 22 or one side edge 23 provided therein, and connects it to the operating arm 9. The user rubs the provided engagement claw 10 and pushes the operating arm 9 into the hollow part of the leg against the auxiliary biasing spring piece 17 as it passes. After passing, the operating arm returns to its original state due to the repulsion of the spring piece, and engages the claw 10 protruding outward with the opening 22 or one side edge 23 to bring the cover plate 18 into contact with the surface of the panel. It becomes fixed and occluded.

In this case, the latch operates only the operating arm 9 to lock its claw 10 to the panel 20 and fix the cover plate 18, but the head 4 and check claw 6 are attached to the cover plate.
The non-return claws 6, 6 are not involved in the operation of joining the plates together by maintaining the sandwiched state between the plates 6 and 6 as they are.

In the latch of the present invention, in which the cover plate 18 is fixed in a closed state in this manner, the operating arm is locked against the spring piece 17 by operating the knob 11 of the operating arm exposed on the surface side of the cover plate with a finger. When brought to the leg 7, the engaging claw 1 protrudes
0 is disengaged and can be separated from the panel 20.

As explained above, the latch of the present invention has two independent locking means: the non-return pawl 6 provided on the locking leg 7 and the engaging pawl 10 provided on the operating arm 9 movable via the hinge portion 8. The two plates that are to be joined are individually engaged with each other, and one is fixedly engaged and the other is freely engaged and detached by the operation of the operating arm, so that the plates do not come off from one of the plates. Since the members can be freely connected and detached, it can be effectively used as a latch for a cover plate, etc., which can be screwed to open and close freely as described above. When the operation arm 9 is in a hanging state as shown in FIG. Along 12 and 13,
Or engaging parts 15, 16 provided near these
In order to prevent the knob part 11 from slipping off due to engagement, the operating arm 9 is held in line with the locking leg part 7 even when subjected to the restoring force of the hinge part or the repulsive force of the spring piece. It has become something that can be done.

Therefore, in the previously proposed latches, each latch was bent at the hinge portion each time it was used and installed, and the latch was held while being held with the fingers, but in the present invention, the bending operation is performed in advance. Since the arms can be aligned with the legs, it can be attached by simply pushing it into the mounting hole when in use, making it extremely easy to handle and suitable for attaching parts to automobiles and other products manufactured on assembly lines. When used, it has the effect of dramatically improving workability.

In the above embodiment, the engaging portions 15 and 16 were formed in the shape of a bank along the respective edges 12 and 13, but for example, one may be formed into a hemispherical protrusion, or one may be formed into a groove. Furthermore, as shown in FIG. 7, the upper and lower surfaces near each edge may be made into uneven surfaces with a corrugated cross section to prevent the engaging knob 11 from slipping off.

Of course, these engaging parts become a hindrance when the knob part 11 rides on the plate part 2, but when the knob part 11 rides on the plate part 2, the thin hinge part 8 that can be bent freely bends and helps the operating arm 9 to extend and rise. Therefore, the engaged state can be easily obtained.

[Brief explanation of the drawing]

The drawing shows one embodiment of the present invention.
The figure is a slope view of the molded state, Figure 2 is a central vertical sectional view of the same as above, Figure 3 is a slope view of the operating arm raised and attached to the locking leg, and Figure 4 is the knob and head. Fig. 5 is a front view of the case when it is attached to the cover plate, and Fig. 6 shows the relationship in which the cover plate is fixed to the panel. The explanatory diagram, FIG. 7, is an enlarged view of the main part, partially in cross section, showing another embodiment. 2... Plate portion, 4... Head, 6... Non-return claw as non-return claw means, 7... Locking leg, 8... Hinge, 9... Operating arm, 10... Engagement Claw, 11... knob portion, 12... edge of plate portion, 13... edge of knob portion, 15, 16... engaging portion.

Claims (1)

[Scope of utility model registration request] A non-return claw that hangs down from the lower surface of the head, deforms when pushed into a mounting hole provided in a plate such as a cover plate, passes through the hole, and holds the plate between the head and the lower surface of the head. A locking leg provided with a means, connected to the leg end of the locking leg via a thin hinge portion, and folded back along the side surface of the locking leg using the hinge portion as a fulcrum, and provided at the free end. The knob protrudes upward from one side edge of the head, and an engaging claw is provided on the outer surface of the head to engage an opening or edge of another plate that is fixed to the lower surface of the plate such as the lid plate. a latch for connecting a plate, the latch having an operating arm having one side edge of the head and one side of a knob of the operating arm that projects above the head beyond the one side edge of the head; Engagement parts that engage with each other are provided on the upper surface of the head and the lower surface of the knob that are close to the edge or both edges, respectively, and the operating arm that is folded back about the hinge part is attached to the locking leg. A latch for joining boards that can be held in an upright position along the side of the board.