JPH08126039A - Card case for protecting printed circuit board for key telephone master set - Google Patents

Abstract

PURPOSE: To easily insert a card case to a key telephone master set, to improve the reliability by devising a wire cable that it is not fallen off from a connector, and to improve the convenience of a contained card case and wiring work. CONSTITUTION: A hook shaped engagement section 13 is provided in front of a card case main body 2 to fix a wiring cable. An engagement projection 16 and an engagement recessed part 17 are provided to four corners of the card case main body 2 so that the card case main bodies 2 are stacked by engaging them with each other at containing. A positioning projection 18 is provided to the card case main body 2 and in press contact with a mother board when the card case is mounted onto the key telephone master set so as to avoid the card case main body 2 from being too much inserted and a connector 11 of the card case main body 2 is connected correctly to a connector of the key telephone master set.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board protection card case used in a key telephone main unit.

[0002]

2. Description of the Related Art Conventionally, as this type of card case,
A configuration as shown in FIG. 5 is known.

In FIG. 5, reference numeral 1 denotes a printed circuit board protecting card case, and a printed circuit board locking portion 7 for fixing a printed circuit board 6 to a side surface plate 5 on a top plate 3 and a bottom plate 4 of a card case body 2. The rails 8 are formed on the outer surfaces of the top plate 3 and the bottom plate 4 along the front-rear direction. The front plate 9 and the rear plate 10 are formed such that the intermediate portion is recessed in the direction of the side plate 5 and the width thereof is narrowed.

The printed circuit board 6 can be protected by fixing the printed circuit board 6 to the side plate 5 by the printed circuit board lock portion. The card case 1 with the printed circuit board 6 thus fixed is inserted into the button telephone main unit 19 by the guide of the rail 8 and the guide groove 20 (see FIG. 2), and the button telephone provided on the printed circuit board 6 on the rear face plate 10 side. The side connector 11 enables connection with the motherboard connector 22 (see FIG. 3) of the button telephone main unit 19. The device can be connected by connecting a wiring cable (not shown) to the device-side connector 12 provided on the printed circuit board 6 on the front plate 9 side.

[0005]

However, in the card case 1 of the conventional example described above, the wiring cable connected to the device side connector 12 is not fixed, so that the wiring cable covers the front surface of another card case 1. , Difficult to insert and remove. Moreover, the wiring cable may come off from the connector.

Further, even if the card cases 1 are stacked at the time of storage, there is no engaging portion, so that they are easily displaced, which is inconvenient for storage.

Further, when the card case 1 is mounted on the key telephone main unit, the upper portion of the button telephone side connector 11 cannot be regulated so as not to be deeply inserted into the back side, and the card telephone 1 may be inserted in an inclined state. Therefore, the button telephone side connector 11 may not be reliably connected to the motherboard connector 22.

The present invention solves such a conventional problem. Even if wiring is performed on the front surface, the key telephone main unit can be easily inserted and removed, and the wiring cable can be pulled out from the connector. The purpose of the present invention is to provide a card case for protecting the printed circuit board of the key telephone main device, which is capable of preventing the above-mentioned problems and improving the reliability. The present invention aims to provide a card case for protecting a printed circuit board of a key telephone main device, which can be conveniently stored for a long time. It is an object of the present invention to provide a card case for protecting a printed circuit board of a key telephone main device that can be surely connected.

[0009]

The technical means of the present invention for achieving the above object is to provide a card case body for protecting the printed circuit board, and a printed circuit board for fixing the printed circuit board to the card case body. A lock part, a guide part for mounting the card case body on the key telephone main unit, and a fixing means provided on the front surface of the card case body for fixing the wiring cable from the connector of the printed circuit board. is there.

Another technical means of the present invention for achieving the above object is the above technical means, which is provided with an engaging projection and an engaging recess that can be engaged with each other when stacked on the card case body. is there.

Still another technical means of the present invention for achieving the above object is the above technical means, wherein a positioning protrusion that can come into contact with the motherboard when the card telephone main unit is mounted is provided on the card case body. Be prepared.

In the above technical means, the hook-shaped engaging portion and the connecting hole can be used as the fixing means, and the engaging projection and the engaging recess can be provided at the four corners.

[0013]

According to the present invention having the above structure, the wiring cable from the front surface of the card case body is fixed by the fixing means of the front portion of the card case body, so that even if the wiring is front wiring, this wiring cable can be used for other cards. It is possible to prevent the front surface of the case from being covered and prevent the wiring cable from coming off the connector.

Further, by stacking by engaging the engaging projection and the engaging recess during storage, it is possible to stack without slipping.

Further, when the positioning protrusion is brought into contact with the mother board of the button telephone main unit for positioning when it is mounted on the key telephone main unit, the connector can be inserted properly and the connector can be properly connected.

[0016]

An embodiment of the present invention will be described below with reference to the drawings.

1 to 4 show a card case for protecting a printed circuit board according to an embodiment of the present invention, FIG. 1 is a perspective view, FIG. 2 is a perspective view of a state mounted on a key telephone main unit, and FIG. 3 is the same. FIG. 4 is a partial side view of the mounted state, and FIG. 4 is an explanatory diagram of the stacked state during storage.

1 to 4, reference numeral 1 is a card case for protecting a printed circuit board, and a printed circuit board 6 is provided for a top plate 3 and a bottom plate 4 of a card case body 2 and a side plate 5.
A printed circuit board lock portion for fixing the above is formed, and a rail 8 as a guide portion is formed along the front-rear direction on the outer surfaces of the top plate 3 and the bottom plate 4. The front plate 9 and the rear plate 10 are formed such that the intermediate portion is recessed in the direction of the side plate 5 and the width thereof is narrowed.

In the present embodiment, in addition to the structure of the above-mentioned conventional example, a hook-shaped engaging portion 13 is formed at an intermediate portion of the front surface of the front plate 9.
Are integrally provided at a plurality of locations (two locations in the illustrated example), and the frame-shaped projecting portion 14 is integrally provided at the lower portion to form the connection hole 15. Engaging projections 16 and engaging recesses 1 which can engage with each other at the four corners of the upper surface plate 3, the lower surface plate 4, the front surface plate 9 and the rear surface plate 10 on the open side and the four corners of the side surface plate 5 at the time of stacking.
7 are formed. Button telephone side connector 1 to be described later
1, a mother board 21 of a button telephone main unit 19 which will be described later at the time of connecting the connector is provided on the upper side of the upper plate 3 in the illustrated example.
The positioning protrusion 18 that abuts on is integrally provided.

To mount the card case 1 having the above-described structure on the key telephone main unit 19, the printed circuit board 6 is used.
Is fixed to the side plate 5 by the printed circuit board lock portion 7. Thereby, the printed circuit board 6 can be protected. The card case 1 to which the printed circuit board 6 is thus fixed is inserted by the guide of the button telephone main unit 19 rail 8 and the guide groove 20 as shown in FIG. 2, and the rear plate 10 side is attached to the printed circuit board 6 as shown in FIG. It is possible to connect to the motherboard connector 22 of the button telephone main unit 19 by the button telephone side connector 11 provided in. At this time, by bringing the positioning protrusion 18 into contact with the motherboard 21, the card case 1 is inserted in the correct posture without tilting to the motherboard 21 side, and the button telephone side connector 11 is securely connected to the motherboard connector 22. It is possible to prevent dubbing such as disconnection and poor continuity.

After the mounting, the wiring cable connected to the device side connector 12 is engaged with the engaging portion 13, and the connecting hole 15 is used to tie and fix the wiring cable with a string or the like. By fixing the wiring cable to the front surface of each card case 1 in this manner, the card case 1 can be inserted and removed without hindering other wiring cables, and the operation is easy. Further, by fixing the wiring cable to the card case 1 as described above, it is possible to prevent the wiring cable from coming off from the connector 12 even if a slight pulling force is applied to the wiring cable, and it is possible to improve reliability.

When the card case 1 is stored, the card cases 1 are stacked so that the connectors 11 and 12 face upward. At this time, as shown in FIG. 4, the four corners for engaging the lower card case 1 are used for engagement. By engaging the protrusion 16 with the engaging recess 17 located at the bottom of the upper card case 1, the card cases 1 can be stacked in a plurality of stages in a stable state. Therefore, the card case 1 can be stored in a small space.

[0023]

As described above, according to the present invention, by fixing the wiring cable to the front surface of each card case body by the fixing means, the wiring cable does not cover the front surface of another card case. Therefore, each card case can be easily inserted and removed. Moreover, even if a slight pulling force is applied to the wiring cable, the wiring cable can be prevented from coming off from the connector, and the reliability can be improved.

Further, by stacking by engaging the engaging projection and the engaging recess during storage, it is possible to stack without slipping. Therefore, it can be stored in a small space, which facilitates storage.

Further, when the positioning protrusion is brought into contact with the motherboard of the button telephone main unit at the time of mounting on the button telephone main unit and positioned, the connector can be inserted in the correct posture and the connector can be properly connected. Therefore, reliability can be improved.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a card case for protecting a printed circuit board according to an embodiment of the present invention.

FIG. 2 is an external perspective view showing the card case mounted on a key telephone main unit.

FIG. 3 is a partial side view of the same mounting state.

FIG. 4 is an explanatory view of the card case, showing a stacking state during storage.

FIG. 5 is an external perspective view showing a conventional printed circuit board protection card case.

[Explanation of symbols]

 1 Printed Circuit Board Protection Card Case 2 Card Case Body 6 Printed Circuit Board 7 Printed Circuit Board Lock Section 8 Rail 11 Main Unit Side Connector 13 Engagement Section 15 Connecting Hole 16 Engagement Projection 17 Engagement Recession 18 Positioning Projection 19 Button Telephone Main unit 21 Main unit Motherboard 22 Motherboard connector

Claims (5)

[Claims] 1. A card case main body for protecting a printed circuit board, a printed circuit board lock portion for fixing the printed circuit board to the card case main body, and a guide for mounting the card case main body on a key telephone main unit. Department,
A card case for protecting a printed circuit board of a button telephone main device, which is provided on the front surface of the card case body and has fixing means for fixing a wiring cable from a connector of the printed circuit board. 2. The card case for protecting a printed circuit board of a key telephone main unit according to claim 1, wherein the card case body is provided with an engaging projection and an engaging recess that can engage with each other when stacked. 3. The card case for protecting a printed circuit board of a button telephone main device according to claim 1, wherein the card case body is provided with a positioning protrusion that can come into contact with the motherboard when the card telephone main device is mounted. 4. The card case for protecting a printed circuit board of a key telephone main unit according to claim 1, wherein the fixing means comprises a hook-shaped engaging portion and a connecting hole. 5. The card case for protecting a printed circuit board of a button telephone main unit according to claim 2, wherein the engaging projections and the engaging recesses are provided at four corners.