JPH046232Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a holding case for holding a printed board on which necessary electrical members are assembled.

<Prior Art> Printed boards are fixed to a switchboard or the like in an orderly manner, and when a large number of printed boards are to be stored, a dedicated large rack is usually used to fix them.

On the other hand, such large-scale mounting means are inappropriate for fixing and holding a small number of printed circuit boards, so as shown in Figure 6, a plurality of support rods b are installed on the bottom plate a in the switchboard. The spacer c is fitted onto the support rod b, and the through hole e drilled in the printed board p is fitted onto the top end of the support rod b, and the printed board p is fixed with the screw d. That's what I do.

However, with such means, the printed board p
A mounting hole must be formed in the bottom plate a according to the size of the board, a support rod b must be planted in the hole, and a through hole e must be formed in the printed board p for the support rod b to pass through. The construction was troublesome.

In addition, the printed board P may be damaged or cracked when the through holes e are made or when it is fixed with screws to the support rod b, and since it is only point-supported at an appropriate position, it is susceptible to impact. It is vulnerable to damage and is prone to subsequent damage. Since the lower surface is in an open state between it and the bottom plate a, it is easy for dust to adhere thereto, which can easily cause electrical short circuits and the like. As described above, the conventional structure was extremely insufficient in protecting the printed board p.

The present invention eliminates the troubles of conventional configurations when installing a small number of printed boards p,
Another object of the present invention is to provide a printed board holding case that can accommodate various sizes of printed boards p.

<Means for Solving the Problems> The present invention has upwardly protruding side plates on both sides, each of which has engagement grooves formed on its inner surface into which both ends of the printed board are inserted, and has grooves on the front and rear end surfaces that extend in the front-rear direction. a bottom plate piece formed with a fitting hole and a connecting protrusion that can be inserted into the fitting hole with their end surfaces overlapping each other, and the required number of bottom plate pieces are arranged in a row so as to be fitted in the front-rear direction; A connecting protrusion that can be inserted into the insertion hole of the bottom plate piece and a fitting hole that can insert the connecting protrusion of the bottom plate piece are formed, and a fixing means is further provided on the lower surface, and is arranged at the front and rear ends of the row of bottom plate pieces. It consists of two end plates.

<Function> When assembling, select the number of bottom plate pieces corresponding to the length of the printed board p in the longitudinal direction, connect the required number by inserting the connecting protrusions into the respective fitting holes, and connect the bottom plate pieces. Insert both side edges of the printed board p into the engagement grooves from the ends of one row, and finally insert two end plates at both ends of the row of bottom plate pieces, and insert the two end plates into the insertion holes of the bottom plate pieces and the connecting protrusions of the end plates. The connection is made by fitting the connection protrusion and the insertion hole, respectively. Thereafter, the lower surface of the end plate is attached and fixed to a mounting surface of a switchboard or the like, or a rail installed on the switchboard or the like using a fixing means.

<Example> An example of the present invention will be described with reference to FIGS. 1 to 3.

Reference numeral 1 denotes a short bottom plate piece 1 made of a resin material, in which rising side plates 3, 3 each having an engagement groove 4 formed on the inner surface are projected upward from both sides of the bottom surface 2, and one side of the rising side plate 3 has an engaging groove 4 formed on the inner surface. The upper side plate 3 has a fitting hole 5 at its front end, a connecting projection 6 at its rear end, and a connecting projection 6 at the front end of the rising side plate 3 at the other end, and a fitting hole 5 at its rear end in the front-rear direction. is formed.

Therefore, the connecting protrusions 6 can fit into the fitting holes 5 of the respective end surfaces of the similar bottom plate pieces 1.

Further, hanging plates 7, 7 are formed at the lower front end of the bottom surface 2 of the bottom plate piece 1 at left-right symmetrical positions, and the front and rear ends of the hanging plates 7, 7 have fitting holes 8, respectively, and insertion holes 8 for insertion into the fitting holes 8. Possible connecting projections 9 are formed. The fitting hole 8 and the connecting projection 9 are formed in the same positional relationship as the relationship between the fitting hole 5 and the connecting projection 6.

Further, a circular insertion hole 10 is formed directly below the center of the bottom surface 2, passing through the bottom plate piece 1 at the front and back.

The bottom plate piece 1 has a connecting protrusion 6 in the fitting hole 5 and a connecting protrusion 6 in the fitting hole 8 corresponding to the length of the printed board p to be described later.
A required number of connecting protrusions 9 are inserted into the connecting protrusions 9 and connected, thereby forming the bottom plate piece row 13.

In the bottom plate piece row 13, the printed board p is inserted into the engagement groove 4 from the end thereof, and is held with a gap formed between it and the bottom surface 2. An IC package, a capacitor, a resistor, a power distribution member, etc. are connected to the upper surface of the printed board p.

FIG. 4 shows a modification of the bottom plate piece 1 that allows attachment of a plurality of printed boards p. That is, the engagement grooves 4, 4 formed inside the upright side plates 3, 3
A plurality of printed boards p are formed in the vertical direction at predetermined intervals, thereby making it possible to arrange the printed boards p in several stages.

In the figure, 15a and 15b are end plates disposed on both end surfaces of the bottom plate piece row 13.

To explain its structure, an inwardly protruding edge frame 17 is formed on almost the entire periphery of the rectangular back plate 16, and its lower part is a bottom surface 18 that evenly abuts the bottom surface 2 of the bottom plate piece 1. . Engagement grooves 19 are formed on both upper sides of the bottom surface 18, and are continuous with the engagement groove 4 in an even manner. Incidentally, the engagement groove 19 can be omitted, and the end plates 15a and 15b may simply be brought into contact with the front and rear ends of the printed board p.

Further, at both ends of the bottom surface 18 of the edge frame 17, a connecting projection 20 that can be inserted into the fitting hole 5 and a fitting hole 21 into which the connecting projection 6 can be inserted are formed.

On both sides of the upper part of the edge frame 17, there are cover plates 4 to be described later.
Dog-shaped locking grooves 22, 22 for locking 0 are formed. Further, the upper center of the edge frame 17 is omitted, and the upper end of the back plate 16 has the edge frame 1
A locking pawl 23 is formed to project inward at a position spaced apart from the upper surface of the cover plate 40 by the thickness of the cover plate 40 . Grooves are formed in the back plate 16 on both sides of the locking claw 23 to allow the locking claw 23 to bend.

In addition, a plate insertion groove surface 24 is formed on the upper edge of one side of the edge frame 17 of one end plate 15a, and a display plate 25 displaying symbols and characters corresponding to the role of the printed board p, which will be described later, is inserted. .

Below the bottom surface 18, the lower central part of the back plate 16 is extended downward, and hanging pieces 27a and 27b are formed on the left and right positions of the inner surface thereof, and the inner surface of the lower end of one of the hanging pieces 27a is The connecting projection 28 is inserted into the insertion hole 8, and the insertion hole 29 into which the connecting projection 9 is inserted is formed on the inner surface of the lower end of the other hanging piece 27b. Further, an insertion hole 30 that corresponds to the insertion hole 10 is formed in the center of the lower part of the bottom surface 18 .

From the lower surface of the bottom surface 18, hanging pieces 27a, 2
Hanging pieces 32, 32 are installed vertically at the outer position of 7b,
At the bottom thereof, locking claws 33, 33 project inward from the lower ends of the hanging pieces 27a, 27b by a distance equivalent to the wall thickness of a rail r, which will be described later.

The end plates 15a and 15b having the above-mentioned configuration have a connecting protrusion 20, a fitting hole 21, a fitting hole 29, and an insertion hole 30, respectively, at both ends of the bottom plate piece row 13, and a fitting hole 5, a connecting protrusion 6, and an insertion hole 8, respectively. , is connected to the connecting projection 9 and connected to the bottom plate piece row 13, and after the connection, the connecting rod 35 is inserted into the insertion holes 10, 30 and held in the front-rear direction.

Reference numeral 40 is a transparent cover plate that is attached to the connecting body from above, and has both ends curved downward, and the curved ends 41, 41 are engaged with the locking grooves 22, 22 of the end plates 15a, 15b. to cover the top surface of the connector. Further, the front and rear ends of the cover 40 have locking claws 2.
3, 22. Therefore, its escape is prevented.

With this cover plate 40, the printed board p is protected from dust in the air atmosphere, and the electrical components can be maintained well.

As shown in FIGS. 2 and 3, the holding case C having the above structure has locking claws 33, 33 locked to the upper collar of a rail r fixed to a power distribution board etc. Installed.

FIG. 5 shows another fixing means for the holding case C.

Here, 50 indicates an end plate of another embodiment, and the lower surface thereof has locking claws 33, 3 of the end plates 15a, 15b.
3 is eliminated, and in its place, the back plate 51 is extended downward, a pedestal part 52 is provided protruding outward from the lower end thereof, and a U-shaped groove 53 is formed in the center part. After connecting the end plates 50 to both ends of the row of bottom plate pieces 13, the end plates 50 are placed at the required mounting positions, and the U-shaped grooves 50
The holding case C is fixed by screwing the screw into the holding case C from above.

<Effects of the invention> As described above, the present invention connects a plurality of bottom plate pieces 1 corresponding to the length of the printed board p, and arranges end plates 15a, 15b, 50 at both ends of the bottom plate piece row 13. constitutes a holding case C, which holds the printed board p and also holds the end plates 15a, 1
5b, 50 (locking claws 33, 3
3. Since it can be fixed in a predetermined position by the U-shaped grooves 53, 53), it can easily be adapted to print boards p of various lengths by simply changing the number of bottom plate pieces 1.

(b) There is no need to perform any processing such as drilling mounting holes on the printed board p, and furthermore, the work on the bottom plate for fixing the holding case C can be done regardless of the size of the printed board p. , standard construction based on standards becomes possible. Therefore, installation work becomes easy.

C. There is no need for direct drilling into the printed board P or tightening screws, so there is no damage during installation. Also,
Almost its entire periphery is fitted and held firmly. Furthermore, the lower surface of the printed board p is isolated from the surrounding atmosphere by the bottom plate piece row 13, and dust does not adhere thereto. Therefore, the printed board p is sufficiently held.

Therefore, it has excellent effects such as being optimal for holding a small number of printed circuit board connections.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view, Figure 2 is a vertical side view of the installed state, Figure 3 is a sectional view taken along the line A-A in Figure 2, and Figure 4
The figure is a longitudinal sectional side view of a modified example of the bottom plate piece 1, FIG. 5 is a perspective view of the end plate 50, and FIG. 6 is a vertical sectional front view of the conventional configuration. 1... Bottom plate piece, 3, 3... Upright side plate , 4... Engaging groove, 5, 8... Fitting hole, 6, 9... Connecting protrusion,
10...Through hole, 13...Bottom plate piece row, 15a, 1
5b... End plate, 19... Engagement groove, 20... Locking groove, 22... Locking claw, 20, 28... Connection protrusion,
21, 29...Insertion hole, 30...Insertion hole, 33...
... Locking claw, 40 ... Cover plate, 50 ... End plate, 5
3...U-shaped groove.

Claims (1)

[Claims for Utility Model Registration] A rising side plate is formed on the inner surface with engaging grooves into which both ends of the printed board are fitted, and is projected upwardly on both sides, and has insertion holes in the front and back directions on the front and rear end faces, and a raised side plate that has engagement grooves formed on the inner surface into which both ends of the printed board fit. connecting protrusions that can be inserted into the insertion holes in an overlapping state, and the required number of bottom plate pieces are arranged in a row so as to be fitted in the front-rear direction; An insertable connecting protrusion and a fitting hole into which the connecting protrusion of the bottom plate piece can be inserted are formed, and a fixing means is provided on the lower surface, and the two ends are arranged at the front and rear ends of the row of bottom plate pieces. A printed board holding case consisting of a board.