JPH0626170U - Electronic device structure - Google Patents

Abstract

(57) [Summary] [Purpose] The lock claws installed on the left and right of the front end of each printed wiring board engage with the stoppers formed on the front end of the guide groove of the board holder so that each printed wiring board can be individually mounted. This is to obtain an electronic device structure configured to be detachable. [Structure] A mother board 4 is arranged in a substantially vertical direction inside an electronic device housing, and a large number of printed wiring boards 7 oriented substantially horizontally to the mother board 4 are provided side by side in the vertical direction. An electronic device structure in which the mother board 4 and the printed wiring board 7 are connected by a connector, each board having a plurality of guide grooves 5a for receiving the left and right ends of the printed wiring board 7 on the opposite surfaces. Holder 5
Stoppers 5b are integrally formed at the front end portions of the L and 5R guide grooves, and lock claws 10 that are cantilevered are fixed to the left and right front end portions of the printed wiring boards 7 corresponding to these stoppers 5b, respectively. Board holder 5L,
It is characterized in that it is provided with a protrusion 10a and a handle portion 10b which can be engaged with a corresponding stopper 5b of 5R.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 According to the present invention, a large number of printed wiring boards are detachably coupled to a motherboard arranged inside an electronic equipment casing such as a computer main body, a private branch exchange (PBX), and a main unit of a button telephone device. Electronic structure.

[0002]

[Prior art]

 As is well known, in computer main bodies, PBXs, main units of button telephones, etc., for example, a mother board equipped with main functional elements for controlling the entire system and an external station line, each terminal device, and an individual button telephone A large number of printed wiring boards equipped with individual functional elements for controlling the are incorporated in the housing, but conventional electronic equipment has a structure as shown in FIG.

That is, FIG. 6 is a perspective view of the inside of the main unit of the conventional button telephone device. A mother board A, on which main functional elements controlling the external office line are mounted, is fixed to a chassis B as a pair of supports. are arranged on the frame C _1, C ₂ in a substantially vertical state. Further, a large number of resin guide rails D having a predetermined length in a direction perpendicular to the motherboard A are fixed to the surface of the chassis B 1. A large number of printed wiring boards E supported by these guide rails D are arranged side by side in the horizontal direction.

Further, in order to prevent each printed wiring board E from coming off due to vibration or the like, the front surface of each printed wiring board E is pressed by the resin fixing metal fitting G fixed to the case main body by the screw H, and each printed wiring board E The terminal J ₁ of the ground wire J is fixed to a proper position of the board E by a tightening screw K, and the individual function elements mounted on these printed wiring boards E control the individual telephones. In FIG. 6, reference numeral "F" is a connector for electrically coupling the mother board A and each printed wiring board E.

[0005]

By the way, in the recent telephone equipment (telephone system) and the like, the internal equipment of the main device is increased in accordance with an increase in the number of office lines used and an increase in the number or functions of button telephones. The number of printed wiring boards E to be incorporated tends to increase. Therefore, in the main device having the above-described structure, the fixing bracket G is removed each time the desired printed wiring board E is pulled out for maintenance or the printed wiring board E is replaced, and each printed wiring board E is removed. Since it is necessary to remove the terminal J ₁ of the ground wire J from the board E, and only the desired printed wiring board E cannot be attached or removed, there is a problem that the work of attaching and detaching the printed wiring board E is extremely troublesome.

The object of the present invention is to solve the above-mentioned problems of the conventional electronic device structure. Lock pawls installed on the left and right of the front end of each printed wiring board are provided at the front end of the guide groove of the board holder. It proposes an electronic device structure in which each printed wiring board can be individually attached and detached by engaging with a stopper formed in the section.

[0007]

[Means for Solving the Problems]

 In order to achieve this object, the present invention arranges a mother board in a substantially vertical direction inside an electronic device housing, and vertically arranges a large number of printed wiring boards oriented in a substantially horizontal state with respect to the mother board. And an electronic device structure in which the mother board and the printed wiring board are connected to each other by a connector, and a plurality of guide grooves for receiving the left and right end portions of the printed wiring board are provided on opposite surfaces. In addition, stoppers are integrally molded at the front end of the guide groove of each board holder, and lock pawls that are supported in a cantilever manner are fixed to the left and right of the front end of each printed wiring board corresponding to these stoppers. The claw is provided with a protrusion and a handle portion that can be engaged with a corresponding stopper of the substrate holder.

[0008]

【Example】

 Hereinafter, details of an embodiment of the present invention will be described with reference to FIGS. 1 to 5. The illustrated embodiment is an embodiment in which the present invention is applied to a main unit of a button telephone device. As shown in FIG. 1 in which a front side plate is removed, the main unit is a power source transformer that generates heat. A power supply unit housing 1 containing a power transistor and the like is provided.

A pair of vertical support frames 2L and 2R that are opposed to each other in the left-right direction are fixed to the upper portion of the power supply housing 1, and external connection and internal wiring are provided on the upper portions of the support frames 2L and 2R. A wiring housing 3 that accommodates is arranged. Between the rear side portions of these support frames 2L and 2R, the mother board 4 shown in FIG. 4 is fixed in a vertical state by fixing screws (not shown) or the like. Of course, the motherboard 4 is equipped with main functional elements that control the entire system and the external line.

As shown in FIGS. 2 and 4, a plurality of pairs of substrate holders 5L and 5R facing left and right are mounted on the respective facing surfaces of the supporting frames 2L and 2R in a vertically aligned state. It is fixed with screws 6. Further, as shown in FIG. 5, these resin-molded substrate holders 5L and 5R are provided with a plurality of horizontal guide grooves for receiving the left and right ends of the printed wiring board 7 electrically connected to the mother board 4. 5a are provided on the opposite surfaces, and therefore, when the left and right ends of the printed wiring board 7 are received in the guide grooves 5a, the horizontally extending printed wiring boards 7 are aligned in the vertical direction. Becomes

As shown in FIG. 4, a large number of connector sockets 8 arranged in the vertical direction corresponding to the vertical arrangement pitch of the guide grooves 5a are fixed to the surface of the mother board 4, Connector plugs 9 which can be engaged with the corresponding connector sockets 8 are fixed to the rear end portions of the printed wiring boards 7 corresponding to the connector sockets 8, respectively.

As shown in FIG. 3, stoppers 5b are integrally formed at the front end portions of the guide grooves 5a of the respective substrate holders 5L and 5R to prevent careless removal of the printed wiring board 7 due to vibration or the like. Then, elastic lock claws 10 are fixed to the left and right of the front end of each printed wiring board 7 corresponding to these stoppers 5b. That is, as shown in FIG. 5, each locking claw 10 cantileveredly supported by each printed wiring board 7 is provided with a protrusion 10a that can be engaged with the corresponding stopper 5b and a handle portion 10b that can be gripped with a fingertip.

In order to stabilize the voltage of each printed wiring board 7, a contact 11 in which a fixing leg portion 11a and an elastic contact portion 11b are integrally formed is arranged in the guide groove 5a of the left substrate holder 5L. The contact between these contacts 11 and the ground metal fitting 12 of the printed wiring board 7 establishes electrical conduction to the ground conductor 13. That is, the insertion grooves 5c are formed in the upper and lower portions on the front end side of the left-side substrate holder 5L, and the windows 5d are formed in the vicinity of the inlet side of each guide groove 5a. Is fixed with a "U" -shaped ground metal fitting 12, which serves as a ground for each printed wiring board 7.

By inserting the fixing leg portion 11a of the contactor 11 into the insertion groove 5c formed in the left side substrate holder 5L, each printed wiring is made through the window portion 5d formed near the entrance side of each guide groove 5a. The elastic contact portion 11a of the contactor 11 fixed to the substrate holder 5L is projected toward the ground metal fitting 12 of the substrate 7. Further, since the contacts 11 are pressed against the vertical ground conductor 13 attached to the left side support frame 2L described above, each printed wiring board 7 includes the ground metal fitting 12, the contact 11, and the ground conductor 13. It will be electrically connected to the ground wiring 14 through.

Since the illustrated embodiment has the above-described structure, the number of external office lines increases, the number of terminal buttons and telephones increases, the printed wiring board 7 is replaced, or maintenance is desired. When the printed wiring board 7 is pulled out, it is not necessary to remove the fixing bracket each time as in the conventional structure, and the work for attaching and detaching the printed wiring board 7 is extremely easy. That is, in order to remove the desired printed wiring board 7 from the mother board 4, when the handle 10b of the lock claw 10 is pushed down and the printed wiring board 7 is pulled toward you, the protrusion 10a of the lock claw 10 is attached to the board holders 5L and 5R. Since it comes off from the stopper 5b, the desired printed wiring board 7 can be removed simply by pinching the handle portion 10b and pulling it toward you.

To connect the printed wiring board 7 to the mother board 4, the left and right ends of the printed wiring board 7 are inserted into the guide grooves 5a of the board holders 5L and 5R, and the printed wiring board 7 is oriented in the direction of the mother board 4. By simply pushing in 7, the connector socket 8 of the mother board 4 is engaged with the connector plug 9 of the printed wiring board 7, and the stopper 5b is engaged with the lock claw 10 of the printed wiring board 7 so that the printed wiring board 7 is secured. It will not be pulled out carelessly.

In the above embodiment, the present invention is applied to the main unit of the button telephone device, but the present invention is not limited to this example, and is applied to other electronic devices. It goes without saying that it is possible.

[0018]

[Effect of device]

 As is clear from the above description, according to the present invention, in order to connect a printed wiring board to a mother board regardless of the increase in the number of printed wiring boards to be incorporated inside, the left and right ends of the printed wiring board are connected to the board holder. Simply insert the printed wiring board into the guide groove and push it toward the motherboard, the connector plug of the printed wiring board engages with the connector socket of the motherboard, and the lock claw of the printed wiring board engages with the stopper. As a result, the printed wiring board does not come out carelessly. In addition, when replacing the printed wiring board or pulling out the desired printed wiring board for maintenance, etc., push down the handle part of the lock claw and pull the printed circuit board toward you. Since it comes off from the stopper, the desired printed wiring board can be removed simply by pinching the handle part and pulling it toward you, making it easy to attach and detach the printed wiring board.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a main unit of a key telephone device according to the present invention, showing a front plate removed.

FIG. 2 is a vertical sectional view of the main device.

FIG. 3 is an enlarged perspective view of a main portion around a front end portion of a printed wiring board used in the main device.

FIG. 4 is an enlarged exploded perspective view of a main part around a motherboard used in the main device.

FIG. 5 is a perspective view of a substrate holder used in the main device.

FIG. 6 is a schematic perspective view of a conventional electronic device.

[Explanation of symbols]

 1 Power Supply Case 2L, 2R Support Frame 3 Wiring Case 4 Motherboard 5L, 5R Board Holder 5a Guide Groove 5b Stopper 7 Printed Wiring Board 8 Connector Socket 9 Connector Plug 10 Lock Claw 10a Protrusion 10b Handle Part

Claims (1)

[Scope of utility model registration request] 1. A mother board is arranged in a substantially vertical direction inside an electronic equipment casing, and a large number of printed wiring boards oriented substantially horizontally with respect to the mother board are arranged side by side in the vertical direction. An electronic device structure in which a mother board and the printed wiring board are connected by a connector, the guide groove of each board holder having a plurality of guide grooves for receiving the left and right end portions of the printed wiring board on opposite surfaces. Stoppers are integrally molded at the front end, and lock claws that are cantilevered on the left and right of the front end of each printed wiring board corresponding to these stoppers are fixed, and the lock claws engage with the corresponding stoppers of the substrate holder. An electronic device structure comprising a protrusion and a handle that can be formed.