JPH0726872Y2 - Plate-like member locking structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a locking structure for a plate-like member, and more particularly to improvement of a retaining structure for a printed wiring board or the like.

<Prior Art> FIGS. 5 and 6 are configuration explanatory views showing an example of a conventional locking structure of a plate member. In the figure, the motherboard 1
A plurality of printed wiring boards 2 are vertically attached to each of them via a connector 3. Then, in order to prevent the attached printed wiring board 2 from coming off, the coming-off prevention plate 4 is provided on the free end side of the printed wiring board 2.
The end faces of are in contact with each other.

Here, the slip-off prevention plate 4 is attached to a part of an internal unit frame (not shown) in a state where the attachment position with respect to the free end of the printed wiring board 2 can be adjusted.

FIG. 7 is a structural explanatory view showing another example of a conventional locking structure for a plate-shaped member. In the figure, two printed wiring boards 5 and 6
Are connected in parallel with the connector 7 via the stud 8. The printed wiring board 6 and the housing of the connector 7 are attached to each other with an adhesive tape in order to prevent loose connection between the printed wiring boards 5 and 6 due to loosening of the connector 7 due to vibration or shock. ing.

<Problems to be Solved by the Invention> However, according to the former configuration, when the printed wiring board 2 is attached or detached, the pull-out prevention plate 4 must be attached and detached using a tool, and the printed wiring board 2 can be freely attached. Since the attachment position of the slip-off prevention plate 4 must be adjusted so that no gap is generated between the end and the end surface of the slip-off prevention plate 4, adjustment man-hours are required. If the structural adjustment cannot be made, it is necessary to increase the processing accuracy of each component so that no gap is generated between the two, resulting in an increase in component cost.

According to the latter configuration, the magnitude of the slip-out prevention force is proportional to the size of the adhesive area of the adhesive tape 9, and the adhesive area is limited, so that a large slip-out prevention force cannot be expected.

The present invention focuses on such a problem, and its purpose is that the plate-like member can be attached and detached without using a special tool, the dimensional accuracy of the assembled parts may be relatively loose, and the cost is low. An object is to provide a locking structure for a plate member.

<Means for Solving the Problems> The present invention which solves such a problem includes a plate-shaped member, a mounting member to which the plate-shaped member is locked, and a bending groove along the longitudinal direction at the center. Is formed, and an arrow-shaped insertion portion is formed at one end so as to be symmetrical across the bending groove, and has a surface orthogonal to the bending groove at the other end so as to be symmetrical across the bending groove. A locking member having a cutout formed therein, the mounting member is provided with a hole into which the insertion portion of the locking member that is folded and overlapped is inserted and engaged, and the engagement member is attached with the insertion portion at one end. It is characterized in that the notch portion at the other end is formed so as to be fitted to the end surface of the plate-shaped member locked to the mounting member in a state of being inserted and engaged in the hole of the member.

<Operation> The locking member, which is folded and overlapped and the insertion portion at one end is inserted and engaged with the hole of the mounting member, spreads in a V shape in the hole and is locked to the edge of the hole.

Then, the end face of the plate-shaped member locked to the mounting member is fitted into the notch portion of the other end of the locking member that spreads in a V shape.

As a result, the plate member is locked by the mounting member via the locking member, and a stable fixed state is obtained.

It should be noted that no special tool is required for attaching and detaching the locking member, and high workability can be obtained.

<Example> Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a structural explanatory view showing an embodiment of a locking member used in the present invention, (a) showing a plan view and (b) showing its bent state. In the figure, the locking member 10 is formed by punching out a plastic sheet such as polypropylene into a predetermined shape, a bending groove 11 is formed in the center along the longitudinal direction, and a bending groove 11 is formed at one end. An arrow-shaped insertion portion 12 is formed so as to be symmetrical with the bending groove 11 in between, and a notch 13 having a surface orthogonal to the bending groove 11 is formed at the other end so as to be symmetrical with respect to the bending groove 11. There is. Here, the length L ₁ of the rear edge portion a of the insertion portion 12 and the bottom portion b of the notch 13 is locked to the mounting member in order to apply a preload to the plate-shaped member locked to the mounting member. It is formed to be slightly shorter than the length from the surface of the mounting member of the plate-shaped member to the free end of the plate-shaped member. The interval W ₁ between the protrusions c formed at both ends of the cutout 13 is such that the end of the plate member fits into the cutout 13 when the locking member 10 is bent into a V shape as shown in (b). Set to do. In addition, the width W ₂ of the base portion of the insertion portion 12 is
It is set so that when the insertion portions 12 of 10 are folded and overlapped, they are inserted into the holes of the mounting member, and when the hands are released, they are bent into a V-shape as shown in (b).

FIG. 2 is a structural explanatory view showing an embodiment of a locking structure of a printed wiring board using the locking member 10 configured as in FIG. 1, (a) showing a perspective view, and (b) showing ) Indicates a cross-sectional view of the main part. In the figure, one end of a printed wiring board 14 used as a mother board is fitted into a guide 16 stamped and formed on the bottom surface of a bracket 15, and the other end is screwed to a support metal fitting 17 attached to a vertical surface of the bracket 15. There is. Both sides of the vertical surface of the bracket 15 are L in the same direction.
A plurality of guides 20 for guiding a plurality of printed wiring boards 19 each of which is bent into a letter shape and which is fitted and connected to the printed wiring board 14 via a connector 18 are formed on each bent surface. Further, in the vicinity of each connector 18 of the printed wiring board 14, a plurality of holes 21 into which the insertion portion 12 of the locking member 10 is inserted are provided.

In such a configuration, the printed wiring board 19 has the guide 20
Is inserted toward the printed wiring board 14 along with, and is fitted and connected to the printed wiring board 14 via the connector 18. Then, the insertion portion 12 of the locking member 10 is bent and overlapped around the bending groove 11 and inserted into the hole 21 of the printed wiring board 14 to be expanded into a V shape, and the edge portion a is engaged with the hole 21. Stop it. In this state, the protrusion c of the cutout 13 is temporarily deformed to lock the end of the printed wiring board 19 in the cutout 13. Similarly, when the printed wiring board 19 is removed from the printed wiring board 14, the projection c of the cutout 13 is temporarily deformed to unlock the end of the printed wiring board 19 and the cutout 13.

With this configuration, the printed wiring board can be attached and detached without using a special tool.

Further, the dimensional accuracy of the assembled parts may be relatively loose, and the parts cost can be reduced.

Moreover, since the locking member is formed so that a preload is applied, the printed wiring board can be locked stably.

FIG. 3 is a structural explanatory view showing another embodiment of the locking member used in the present invention, (a) showing a plan view and (b) showing its bent state. In the figure, the locking member 30 is formed by punching out a plastic sheet such as polypropylene material in a predetermined shape, a bending groove 31 is formed in the center along the longitudinal direction, and a bending groove 31 is formed at one end. An arrow-shaped insertion portion 32 is formed so as to be symmetrical with the bending groove 31 interposed therebetween, and a notch 33 having a surface orthogonal to the bending groove 31 is formed at the other end so as to be symmetrical with the bending groove 31 interposed therebetween. There is. here,
The length L ₂ of the rear edge portion a of the insertion portion 32 and the bottom portion b of the cutout portion 33 is determined by a plate that is locked to the mounting member in order to apply a preload to the plate member that is locked to the mounting member. The length of the plate-shaped member is slightly shorter than the length from the surface of the mounting member to the free end of the plate-shaped member. The width W ₃ of the base portion of the insertion portion 32 is set to V as shown in (b) when the insertion portion 32 of the locking member 30 is folded and overlapped and is inserted into the hole of the attachment member and the hand is released.
Set it so that it is bent into a letter shape.

FIG. 4 is a structural explanatory view showing an embodiment of a locking structure of a printed wiring board using the locking member 30 configured as shown in FIG. 2, (a) showing a perspective view, and (b) showing ) Indicates a cross-sectional view of the main part. In the figure, the printed wiring boards 34 and 35 are connected to each other via a connector 36 and a stud 37 so as to be parallel to each other. Convex portions (for example, 38) are formed on both sides of the lower printed wiring board 34, and these convex portions are fitted to cutout portions (for example, 41) provided on the left and right frames 39 and 40 facing each other. Further, the insertion portion of the locking member 30 is provided at a position corresponding to the end portion of the printed wiring board 35 of the lower printed wiring board 34.
A plurality of holes 42 for inserting 32 are provided.

In such a configuration, before connecting the printed wiring boards 34 and 35, the insertion portion 32 of the locking member 30 is inserted into the hole 42 of the printed wiring board 34 in a state where the insertion portion 32 is bent and overlapped around the bending groove 31. And spread it into a V shape, and the edge portion e is locked in the hole 42. After that, the printed wiring board 35 is connected to the printed wiring board 34 via the connector 36 and the studs 37 so as to be parallel, and in this state, a part of the locking member 30 is temporarily deformed to cut out the notch 33.
The end of the printed wiring board 35 is locked to. When the printed wiring board 35 is removed, a part of the locking member 30 is temporarily deformed to release the locking between the notch 33 and the end of the printed wiring board 35.

With this configuration, the locking member is formed so that a preload is applied, so that a mechanically stable locked state can be obtained as compared with the conventional retaining method using an adhesive tape.

In each of the above embodiments, the structure for mounting the printed wiring boards to each other has been described, but it is also effective as a locking structure to the other plate members.

<Effects of the Invention> As described above, according to the present invention, the plate member can be attached and detached without using a special tool, and a stable locked state can be obtained even if the dimensional accuracy of the assembled parts is relatively loose. It is possible to realize a locking structure of a plate-shaped member which is inexpensive and has a large practical effect.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing an embodiment of a locking member used in the present invention, and FIG. 2 is an embodiment of a locking structure of a printed wiring board using the locking member configured as shown in FIG. FIG. 3 is a structural explanatory view showing an example, FIG. 3 is a structural explanatory view showing another embodiment of the locking member used in the present invention, and FIG. 4 is a printed wiring using the locking member configured as shown in FIG. FIG. 5 is a structural explanatory view showing an example of a plate locking structure, FIGS. 5 and 6 are structural explanatory views showing an example of a conventional plate-shaped member locking structure, and FIG. 7 is a conventional plate-shaped member. It is a structure explanatory view showing other examples of a locking structure. 10,30 ... Locking member, 11,31, Bending groove, 12,32 ... Arrow-shaped insertion part, 13,33 ... Notch part, 14,19, 34, 35 ... Printed wiring board, 2
1,42 ... hole.

Claims (1)

[Scope of utility model registration request] 1. A plate-shaped member, a mounting member to which the plate-shaped member is locked, a bending groove formed along the longitudinal direction at the center, and symmetrical at one end with the bending groove interposed. And a locking member in which a notch portion having a surface orthogonal to the bending groove is formed at the other end so as to be symmetrical with the bending groove interposed therebetween. Is provided with a hole into which the insertion portion of the folded and overlapped locking member is inserted and engaged, and the locking member has a cutout at the other end with the insertion portion at one end inserted and engaged in the hole of the mounting member. A locking structure for a plate-shaped member, wherein the portion is formed so as to be fitted to an end surface of the plate-shaped member locked to the mounting member.