KR20000077493A - Ground apparatus of signal cable - Google Patents

Abstract

PURPOSE: A grounding device for signal cable is provided to enable grounding operation to take place simultaneously during a fixing operation. CONSTITUTION: A signal cable's grounding device is composed of connection, installation, insertion, and grounding. A bottom chassis(5), which supports the PCB(Printed Circuit Board), is fixed on the front case(3). A rear case(7) connects with the front case. An image displayer(2) is installed in between the front and rear cases. A signal cable(6) is fixed by the bottom chassis' holder(8) and it connects to the PCB. A grounding piece(34), which can be installed in the connection groove(20) on the edge of the holder's(8) middle part, is inserted into the bottom chassis' safety groove(9), and it grounds on the bottom chassis. A clamp(24) electrically connects the molt unit(23) with the grounding unit(34) by popping out on the grounding unit and wrapping around the signal cable's molt unit.

Description

Ground apparatus of signal cable

The present invention relates to a grounding device for a signal cable, and more particularly, to a grounding device for a signal cable that can be grounded at the same time when the signal cable (signal cable) is fixed to the monitor.

1 is an exploded perspective view showing a monitor to which the grounding device of the signal cable according to the prior art is applied.

As shown, the monitor 1 is integrally mounted to the front case 3, the cathode ray tube 2 mounted on the front case 3 to display letters or symbols, and integrally at the rear of the front case 3 and therein. Rear case (7) for protecting the components of the external shock, PC (4) for controlling the monitor 1 electronically, bottom chassis (5) for fixing the PC (4) to the front case (3), and It consists of a signal cable 6 for transmitting a predetermined signal output from the computer main body (not shown) to the PC4.

The holder 8 is integrally formed at the predetermined position of the signal cable 6 to fix the signal cable 6 to the bottom chassis 5. That is, the holder 8 is integrally formed with the signal cable 6 by molding or the like, and the coupling grooves 20 are formed on both sides thereof downward. In addition, at the predetermined position of the bottom chassis 5, preferably, the position where the signal cable 6 is fixed, a seating groove 9 having a “Ｕ” shape is formed.

Thus, the pair of coupling grooves 20 of the holder 8 are coupled to the seating groove 9 so that the signal cable 6 is fixed to the bottom chassis 5.

On the other hand, in order to ground the signal cable 6, a predetermined portion of the signal cable 6, that is, the cable shield 11 is stripped a predetermined distance to form the stripping portion 13. Then, a metal clamp 12 is fixed to the stripping part 13, and the metal clamp 12 is integrally fixed to the bottom chassis 5 by using a fastening screw (not shown). Therefore, the signal cable 6 is grounded to the bottom chassis 5.

However, this grounding method peels a part of the cable shield 11 to form a stripping portion 13, mounts a metal clamp 12 on the stripping portion 13, and the metal by a fastening screw (not shown). The clamp 12 is fixed to the bottom chassis 5.

Therefore, since the work of fixing the signal cable 6 to the bottom chassis 5 and the grounding of the signal cable 6 are performed, the work process becomes complicated.

In addition, since components such as screws and metal clamps are used to fix and ground the signal cable, there is a problem in that manufacturing costs are increased.

Accordingly, an object of the present invention is to provide a grounding device for a signal cable that can be grounded at the same time during the fixing operation of the signal cable.

1 is an exploded perspective view showing a monitor to which a grounding device of a signal cable according to the prior art is applied;

2 is an enlarged perspective view showing the grounding device of the signal cable according to the present invention;

3A, 3B and 3C are flowcharts showing the working process of the grounding device of the signal cable according to the present invention; And

Figure 4 is a side view showing a state in which the signal cable grounded in the bottom chassis by the grounding apparatus according to the present invention.

* Explanation of symbols used in the main part of the drawing

5: bottom chassis

6: signal cable

8: holder

9: Receiving groove

24: Clamp

25: Shrink tube

30: grounding device

The object of the present invention described above is a holder which is integrally formed at a predetermined position of a cable to fix the cable to the bottom chassis, integrally coupled to the holder, and when the cable is fixed to the bottom chassis by the holder, Provides a grounding device of the cable consisting of a groundable grounding piece by simultaneously contacting the bottom chassis, and a clamp which is formed integrally with the grounding piece to contact the stripping portion of the cable to electrically connect the cable and the grounding piece. Is achieved.

According to a preferred embodiment of the present invention, the holder is formed on both sides of the coupling grooves in the vertical direction, respectively, the holder is fixed to the bottom chassis by being inserted into the mounting groove formed in the bottom chassis.

The ground piece may include a first vertical plate contacting an inner surface of one side of the coupling groove of the holder, a second vertical plate facing the first vertical plate and contacting an outer surface of the holder, and the first and second vertical plates. Consists of a horizontal plate that is integrally connected to each other, it is coupled to the holder.

A rectangular groove is formed downward in the upper end of the first vertical plate, and when the ground piece is inserted into the coupling groove of the holder, the coupling groove is coupled to the square groove.

The ground piece is a material having a predetermined elasticity, and when the ground piece is coupled to the holder, the first and second vertical plates are elastically in contact with the holder.

The width of the coupling groove of the holder has a width that is the sum of the thicknesses of the bottom chassis and the first vertical plate, so that the holder is mounted by the interference chassis.

The clamp is formed by cutting both sides of the second vertical plate to bend in the direction of the stripping portion of the cable, and curling it to wrap the stripping portion of the cable.

The width of the clamp is formed to a length that both ends of the clamp can overlap each other when the clamp wraps round to surround the stripping portion of the cable, thereby preventing the stripping portion of the cable from being exposed to the outside Grounding device.

Since the insulating member surrounding the outer circumferential surface of the clamp is further provided, the clamp surrounding the stripping part of the cable is prevented from being shorted in contact with an external component. The insulating member is a rubber tube.

Hereinafter, preferred embodiments of the present invention will be described in detail by the accompanying drawings.

As shown in FIGS. 2 to 4, the monitor 1 includes a front case 3 to which the bottom chassis 5 supporting the PC 4 is integrally fixed, and a rear coupled to the rear surface of the front case 3. Mounted between the case (7), the front and rear cases (3, 7) is connected to the PC (4) by being fixed by the holder (8) to the image display unit (2), the bottom chassis (5) for displaying an image Removably mounted in the signal cable 6, the coupling groove 20 formed along the edge of the middle portion of the holder (8) so that the coupling groove (20) of the holder (8) is a seating groove (9) of the bottom chassis (5) ) Is inserted into the ground piece 34, which is grounded to the bottom chassis 5, and integrally protruded from the ground piece 34 to surround the stripping part 23 of the signal cable 6 to strip the stripping part 23. And a clamp 24 electrically connecting the ground piece 34 to the ground.

Since the structure of the monitor composed of the front case, the rear case, the bottom chassis, and the signal cable is the same as that of the monitor shown in FIG. 1, the description of the structure and operation is omitted, and the same elements use the same reference numerals.

The holder 8 is integrally formed at the predetermined position of the above-described signal cable 6 to fix the signal cable 6 to the bottom chassis 5.

That is, the holder 8 is integrally formed with the signal cable 6 by molding or the like, and the coupling grooves 20 are formed on both sides thereof downward.

The grounding device 30 of the signal cable 6 protrudes integrally with the ground piece 34 and the ground piece 34 fitted into the coupling groove 20 of the holder 8, so that It consists of a clamp 24 surrounding the stripping part 23.

The grounding piece 34 faces the first vertical plate 31 and the first vertical plate 31 fitted into the coupling groove 20 of the holder 8 and faces the outer surface 20b of the holder 8. It consists of a second vertical plate 33 in contact, and a horizontal plate 22 which integrally connects the first and second vertical plates 31 and 33 to each other.

Thus, when the grounding device 30 is coupled to the holder 8 of the signal cable 6 and the holder 8 is inserted into the seating groove 9 (Fig. 1) of the bottom chassis 5, the grounding device 30 The lower portion of the first vertical plate 31 of) is grounded by contacting the bottom chassis 5.

In this case, the width W1 of the coupling groove 20 of the holder 8 is equal to the width W1 of the sum of the thickness W2 of the bottom chassis 5 and the thickness W3 of the first vertical plate 31. Has Thus, when the holder 8 is mounted to the bottom chassis 5, the holder 8 is secured to the bottom chassis 5 by the interference fitting method, whereby the holder 8 can be easily separated from the bottom chassis 5. Is prevented.

Since the first vertical plate 31 is formed with the square groove 35, when the ground piece 34 is fitted into the coupling groove 20 of the holder 8, the coupling groove 20 is the square groove 35. To be fitted to.

At this time, since the ground piece 34 is a material having a predetermined elasticity, the first vertical plate 31 and the second vertical plate 33 can be coupled to the holder 8 by maintaining elasticity with each other.

The second vertical plate 33 is rectangular in shape, and both sides of the middle portion 36 are cut and bent perpendicularly to one side thereof. Then, the cut side surfaces 24a are rolled up by a tool or the like. Therefore, the stripping part 23 of the signal cable 6 is wrapped.

Therefore, the signal cable 6 is grounded to the bottom chassis 5 via the clamp 24 and the ground piece 34.

At this time, the width W4 of the clamp 24 when the clamp 24 is rolled round to surround the stripping part 23 of the signal cable 6, both ends 24a of the clamp 24 overlap each other. It is formed as long as possible.

Thus, the stripping part 23 of the signal cable 6 is prevented from being exposed to the outside.

On the other hand, the shrink tube 25 is fitted to the signal cable 6 to insulate the stripping portion 23 of the signal cable 6. Therefore, the shrink tube 25 surrounds the stripping part 23 and prevents the short by preventing the stripping part 23 of the signal cable 6 from contacting other parts. Optionally, the shrink tube 25 can be extended and wrapped up to the clamp 24.

As described above, in order to fix the signal cable 6 to the bottom chassis 5, the holder 8 formed integrally with the signal cable 6 is inserted into the mounting groove 9 (Fig. 1) of the bottom chassis 5. When inserted, the grounding of the signal cable 6 is possible by the grounding device 30.

Hereinafter, the method of using the grounding device of the signal cable according to an embodiment of the present invention will be described in more detail.

As shown in Fig. 3A, one end of the signal cable 6 is connected to the main printed circuit board 4 (Fig. 1). Further, at a predetermined position of the signal cable 6, a holder 8 for fixing the signal cable 6 to the bottom chassis 5 is integrally formed by molding or the like. Then, the stripping portion 23 is formed in the predetermined portion of the signal cable 6 for grounding. In this state, the grounding device 30 is fitted to the holder 8 in the direction of the arrow.

3b shows a state in which the grounding device 30 is coupled to the holder 8 of the signal cable 6. That is, the first vertical plate 31 of the grounding device 30 is fitted into one inner surface 20a (FIG. 3A) of the coupling groove 20 of the holder 8, and the second vertical plate 33 is the holder 8. The outer surface 20b (Fig. 3a). Then, the clamp 24 comes into contact with the stripping portion 23 of the signal cable 6.

As shown in Fig. 3C, after the grounding device 30 is mounted to the holder 8, the clamp 24 is rounded by using a tool. Thus, the clamp 24 is pressed against the stripping portion 23 (FIG. 3B) of the signal cable 6. Then, the shrink tube 25 is inserted into the stripping part 23 (FIG. 3B) of the signal cable 6 to prevent shorts due to contact with other parts.

4 shows that the grounding device of the signal cable is fixed to the bottom chassis. As shown, the holder 8 mounted with the grounding device 30 is slidably inserted into the seating groove 9 (Fig. 1) of the bottom chassis 5 from above. Accordingly, the edge 5a of the seating groove 9 (FIG. 1) is inserted into the coupling groove 20 of the holder 8, thereby contacting the first vertical plate 31 of the grounding device 30.

Accordingly, the signal cable 6 is grounded to the bottom chassis 5 by the clamp 24, the second vertical plate 33, the horizontal plate 22, and the first vertical plate 31.

As described above, the signal cable equipped with a grounding device according to a preferred embodiment of the present invention, when the signal cable is fixed to the bottom chassis, it is possible to ground the signal cable without a separate process, the fixing and grounding of the signal cable The advantage is that the work is performed at the same time.

In addition, in the case of grounding the signal cable, there is no need for a separate screw, there is an advantage that the manufacturing cost is reduced.

Claims (6)

A holder having a coupling groove formed along an edge of the middle portion thereof; A grounding piece which is grounded by contacting the grounding member when the coupling recess of the holder is inserted into the seating recess of the grounding member by being detachably mounted in the coupling recess of the holder; And And a clamp which is formed integrally with the ground piece to contact the stripping part and electrically connects the stripping part and the ground piece. According to claim 1, wherein the ground piece is a first vertical plate in contact with the inner surface of one side of the coupling groove of the holder, a second vertical plate facing the first vertical plate and in contact with the outer surface of the holder, and the first And a horizontal plate for integrally connecting the first and second vertical plates to each other, the cable being connectable to the holder. The cable according to claim 2, wherein a rectangular groove is formed downward in the upper end of the first vertical plate, and the square groove is coupled to the coupling groove when the ground piece is inserted into the coupling groove of the holder. . 3. The cable according to claim 2, wherein the clamp is formed by cutting both sides of the second vertical plate to bend in the direction of the stripping portion of the cable, and curling it to wrap the stripping portion of the cable. The method of claim 4, wherein the width of the clamp is formed to have a length such that both ends of the clamp can overlap each other when the clamp is rounded to surround the stripping portion of the cable, thereby preventing the stripping portion of the cable from being exposed to the outside. Cable characterized in that. The cable according to claim 1, further comprising an insulating member surrounding the outer circumferential surface of the clamp to prevent the clamp surrounding the stripping portion of the cable from being shorted in contact with an external component.