KR200235382Y1 - Printed Circuit Board Flow Prevention Mechanism - Google Patents

Abstract

The present invention relates to a printed circuit board flow preventing mechanism for fixing the printed circuit board not to flow.

The printed circuit board flow preventing mechanism according to the present invention includes a front case 4 to which function keys are mounted, and a main switch 4 mounted to the front case and to which tack switches 6 operated by the function keys are mounted at a predetermined position. A side end portion of the main printed circuit board 13 in a monitor including a bracket 12 fixedly supporting a printed circuit board 13 and a rear case 9 coupled to the front case to protect internal components. A locking groove 13a formed in the groove; An insertion hole 51 formed in a bottom surface of the bracket 12 corresponding to the locking groove; A guide pin (40) installed on the sidewall of the bracket (12) above the insertion hole to form an insertion groove therein; The fixing piece 55 protruding from the lower portion is inserted into the insertion hole 51 of the bracket, and the guide surfaces 32 on both sides thereof are supported by the guide pins 40 so as not to flow back and forth to the bracket. A fixed body 38 and protruded from the body 38 and fitted into a locking groove 13a of the printed circuit board mounted on the bracket 12 to the fixed board 38 of the printed circuit board. It characterized in that it comprises a; a substrate fixture 21 formed with a support inclined surface 30 to prevent the front and rear flow.

Description

Printed Circuit Board Flow Prevention Mechanism

The present invention relates to a printed circuit board flow preventing mechanism for fixing the printed circuit board not to flow, and more specifically, a tag operated by pressing a function function (Knob Function) mounted at a predetermined position in front of a front case such as a monitor. When attaching the main board (PCB) of the 1 board type to which the switch is mounted at a predetermined position on the upper surface to the fixing bracket, malfunction of the tack switch due to deviation of the fixed position can be prevented. It relates to a printed circuit board flow preventing mechanism for preventing the flow of the main circuit board.

As schematically shown in FIG. 1, the cathode ray tube 2 has a first bracket in a monitor structure in which a printed circuit board is mounted by using a separate function key from a main printed circuit board according to the related art. Various circuit components such as transistors are provided on the second bracket 3A, which is mounted to the front case 4 by the (3) and protected by the rear case 9, and whose front part is fixed to the first bracket 3. The mounted main circuit board 1 is fixed. In the front predetermined position of the front case 4, several function keys are mounted, and the printed circuit board 7 to which the tack switches 6 operated by the function keys 5 described above are mounted is the main circuit described above. It is manufactured separately from the substrate 1 and mounted at a predetermined position of the front case 4 so as to be electrically connected to the main circuit board 1. On one side of the above-described bracket 3A, a separate video PCB 8 separated from the video PCB 2A of the cathode ray tube 2 is connected to the main circuit board 1 through a jack.

However, as described above, when the separate printed circuit board 7 separately manufactured from the main circuit board 1 is mounted on the front case 4, the number of parts increases, the cost increases, and the number of assembly processes increases. There was this.

Therefore, in recent years, as shown schematically in FIG. 2, a monitor capable of reducing the cost and assembly labor by mounting the main printed circuit board of the original board type has been used. In such a monitor, the front of the front case 4 is mounted at a predetermined position, the front of which the power switch 10 and several function keys 5 and the cathode ray tube 2 are mounted by fastening members to turn on / off the power of the monitor. It is provided between the case 4, the first bracket 11 fixed to the front case 4 described above and holding the cathode ray tube 2 described above, the front case 4 and the rear case 9 described above. The shield unit 17 which shields the cathode ray tube 2 and the main printed circuit board 13 therein to prevent the leakage of electromagnetic waves, and the front surface of the second bracket 12 fixed to the first bracket 11 described above. The main circuit board 13, in which various circuit components such as a tack switch 6 and a transistor, which are in contact operation when the upper part is fixed and presses the aforementioned function key 5 on the upper surface, are mounted at a predetermined position on the upper surface, the above-described 2 is mounted on one side behind the bracket (12) and the video PCB (2A) of the cathode ray tube (2) Is separately composed of a separate video PCB 8 connected to the main printed circuit board 13 and a rear case 9 fixed to the front case 4 described above to protect internal components.

In addition, in the prior art, the bottom member 14 and the cathode ray tube, which are mounted on the bottom of the second bracket 12 and fixed to the stand 16 to rotatably fix the monitor to a user within a predetermined angle range, and the cathode ray tube A D-Gaussing Coil 15 is provided which removes the magnetic field remaining in (2).

The main printed circuit board 13 described above is fixed to the second bracket 12 by several fastening members, but is formed on the printed circuit board 13 so as to correspond to the diameters of the fastening members and corresponding thereto, respectively. Due to the error of the through-hole (about 0.5mm per number), when the tack switch 6 is pressurized, it flows by a fine distance in the left, right, or forward and backward directions with respect to the second bracket 12.

The present invention is a monitor having a one board type main printed circuit board for mounting tack switches operated by a function key of a front case at a predetermined position thereof, the through hole formed in the main printed circuit board and the through hole formed therein. An object of the present invention is to provide a printed circuit board flow preventing mechanism that prevents a malfunction of the tack switch by preventing the flow of a printed circuit board due to an error of a fastening member fastened to the above-mentioned.

In addition, an object of the present invention is to provide a printed circuit board flow preventing mechanism that is easy to manufacture and install due to its simple configuration and structure.

1 is a schematic side view of a monitor having a two board type printed circuit board on which a main printed circuit board is mounted according to the prior art.

2 is a schematic exploded perspective view of a monitor on which a main printed circuit board of a general one board type is mounted.

Figure 3 is a perspective view of the substrate fixture of the printed circuit board flow preventing mechanism according to an embodiment of the present invention.

Figure 4 is a perspective view of the substrate fixture of the printed circuit board flow preventing mechanism according to another embodiment of the present invention.

Figure 5 is an exploded perspective view of the printed circuit board and the bracket assembled by the printed circuit board flow preventing mechanism according to the present invention.

6 is a side schematic view of a monitor to which a printed circuit board flow preventing mechanism according to the present invention is applied.

* Explanation of symbols for main parts of the drawings

13: main printed circuit board 13a: locking groove

12: bracket 21: substrate fixture

25: elastic ring 30: support slope

32: guide surface 35: fixed piece

51: insertion hole 61: cutout

An object of the present invention as described above, a bracket for holding and supporting the main printed circuit board, the front case to which the function keys are mounted, and the main printed circuit board mounted to the front case, the tack switches operated by the function key is mounted in a predetermined position And a locking groove coupled to the front case and having a rear case for protecting internal components, the locking groove being formed at a side end portion of the main printed circuit board. An insertion hole formed in a bottom surface of the bracket to correspond to the locking groove; A guide pin installed on the sidewall of the bracket above the insertion hole and forming an insertion groove therein; The fixing piece protruding from the lower portion is inserted into the insertion hole of the bracket and the guide surfaces on both sides thereof are supported by the guide pins to be fixed to the bracket so as not to flow back and forth in the bracket, and protruded from the body. Printed circuit board flow prevention characterized in that it comprises a; a substrate fixture having a support inclined surface is inserted into the engaging groove of the printed circuit board mounted to the bracket to prevent the front and rear flow of the printed circuit board to the bracket; Achieved by a mechanism.

The support inclined surface may be formed in a rectangular shape on one side, or may have a conical shape. In either case, the printed circuit board is fixed so that there is no flow with respect to the substrate fixture by the pressure applied by the weight of the printed circuit board or by screws or the like.

As described above, the printed circuit board has a locking groove formed to correspond to the cross-sectional shape of the support inclined surface. Therefore, when the printed circuit board moves with respect to the substrate fixture, it is preferable to give the shape of the locking groove so that the cross-sectional shape of the support inclined surface and the shape of the locking groove coincide.

The bracket must have sufficient strength to support the circuit and have a suitable structure in which the substrate fixture can be installed. Inexpensive and durable stainless steel is preferred as a material, and a thin sheet tray capable of saving material is preferable.

The fixing means may be an elastic ring, a screw, a rivet or the like, but in consideration of its disassembly and assembly, it is preferable that it is an elastic ring. The fixing means is fixed to the bracket which is a fixing object having a suitable shape to be coupled thereto, thereby preventing the substrate fixture from moving in one or more directions. When it is fixed through a screw or rivets, etc., the movement in all directions of the substrate fixture may be limited, but in the case of an elastic ring, a separate fixing means may be necessary. In the case of elastic ring, it is preferable to form integrally with the above-mentioned body. When the elastic ring is used, the elasticity of the elastic ring preferably has elasticity enough for a user to work easily.

In addition, when it is insufficient to prevent the flow of the substrate holding device only by the above-described fixing means, it may be provided separately at a predetermined position of the bracket. This is particularly suitable when the substrate fixture described above fails to fix the substrate fixture in all directions, such as in the case of an elastic ring. In addition, the sidewall of the bracket which is the fixing object is formed with a protrusion guide having a gap approximately equal to the width of the substrate fixing device can help to properly install the substrate fixing device according to the present invention. As described above, when the bracket that is the fixed object is a thin plate, the guide pin may be formed in the pressing process of the fixed object. Various fastening means and auxiliary means may be provided, but it would be desirable to minimize them in terms of installation and cost.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, but the present invention is not limited to these embodiments.

In FIG. 3, an embodiment of a substrate fixture according to the present invention is shown, and FIG. 5 shows that the printed circuit board 13 and the bracket 12 are prevented from being used. In the present embodiment, a body 38 having a rectangular support inclined surface formed on the side thereof, and an elastic ring 25 integral with the body 38 behind the body 38 are provided as fixing means. The support inclined surface 30 is provided symmetrically on both sides, and is inclined downwardly, and guides the locking groove 13a of the printed circuit board 13 to both inclined surfaces when the printed circuit board 13 is placed. The groove 13a is supported to prevent the printed circuit board 13 from flowing. A fixing piece 35 protrudes from the lower side of the substrate holder 21 so that the fixing piece 35 is fitted into the insertion hole 51 of the bracket 12, which is the object to be fixed, to assist in fixing the substrate holder 21. . A guide surface 32 is provided on the side of the body 38 and next to the support inclined surface 30, which is guided by guide pins 40 protruding from the side wall of the bracket 12. It helps to install the above-mentioned substrate fixture 21 in a predetermined position. In this embodiment, the substrate fixing tool 21 is a plastic mold. The bracket 12 is provided with a cutout 61, and a connection between the elastic ring 25 and the body 38 of the substrate holder 21 is accommodated in the cutout 61, so that the substrate holder 120 is disposed in the horizontal direction. 21) prevents flow. In this embodiment, the printed circuit board 13 is a monitor main circuit board, and the bracket 12 is manufactured by pressing a thin sheet of metal.

In Figure 4 it is shown in another embodiment. In this embodiment, the inclined surface 50 of the body 58 is inclined conical. Using a substrate fixture having such an inclined surface 50 has the advantage of further reducing the flow of the substrate by the elastic force of the inclined surface 50. In this embodiment, the role of the elastic ring 45 and the fixing piece 55 is the same as the above-described embodiment. Also in this embodiment, the substrate fixture 41 is a plastic mold.

In Fig. 5, the substrate fixture 21, the substrate 13, and the bracket 12 of the first embodiment show the assembly relationship. As described above, the engaging groove 13a is formed in the substrate 13, and the insertion hole 51, the cutout 61, and the guide pin 40 are provided in the bracket 12. Their role has already been described. In the first step of assembling, when the substrate holder 21 is aligned at a predetermined position on the bracket 12 and moved downward, the guide surfaces 32 on both sides of the body 38 of the substrate fixture 21 are guided by the bracket 12. Guided to pin 40. If the substrate fixture 21 is further moved, a portion connecting the elastic ring 25 and the body 38 is accommodated in the cutout 61 of the bracket 12, and the fixing piece 35 is also inserted into the hole 51. Is accommodated in. Subsequently, when the printed circuit board 13 is aligned and moved to a predetermined position on the bracket 12 provided with the substrate fixing tool 21, the locking groove 13a of the printed circuit board 13 supports the substrate fixing device 21. Down along the inclined surface 30. Finally, the assembly is completed by fixing the substrate 13 to the bracket 12 with screws or adhesives or the like.

Disassembly may be performed in the reverse order of assembly.

As schematically shown in FIG. 6, in the case of pressing a predetermined function key 5 mounted at a predetermined position in front of the front case 4 of the monitor, the above-described function key 5 is the one board type described above. By maintaining the predetermined distance (L = 0.5mm), which is preferably spaced apart from the tack switch 6 mounted at a predetermined position on the upper surface of the main printed circuit board 13, the above-described function key 5 is assigned to the tack switch 6 Contact with and activate it.

The printed circuit board flow preventing mechanism according to the present invention can easily prevent the flow of the printed circuit board with respect to the bracket while the manufacturing and installation of the printed circuit board can be reliably prevented. It is especially useful to prevent.

Claims (3)

A bracket for fixing and supporting the front case 4 to which the function keys are mounted, and the main printed circuit board 13 mounted to the front case and to which the tack switches 6 operated by the function keys are mounted at a predetermined position ( 12) and a locking groove (13a) formed in the side end portion of the main printed circuit board 13 in the monitor comprising a rear case (9) coupled to the front case to protect the internal parts; An insertion hole 51 formed in the bottom surface of the bracket 12 in correspondence with the gait groove; A guide pin (40) installed on the sidewall of the bracket (12) above the insertion hole to form an insertion groove therein; The fixing piece 55 protruding from the lower portion is inserted into the insertion hole 51 of the bracket, and the guide surfaces 32 on both sides thereof are supported by the guide pins 40 so as not to flow back and forth to the bracket. A fixed body 38 and protruded from the body 38 and fitted into a locking groove 13a of the printed circuit board mounted on the bracket 12 to the fixed board 38 of the printed circuit board. Printed circuit board flow preventing mechanism comprising a; a substrate holder (21) having a support inclined surface (30) to prevent the flow forward and backward. According to claim 1, The substrate fixture 21 is formed on one side of the body 38, the elastic ring for fixing the substrate fixture to the bracket by being fitted through the cut-out portion 61 formed on the upper side wall of the bracket A printed circuit board flow preventing mechanism, further comprising (25). 3. The printed circuit board flow preventing mechanism of claim 2, wherein the support inclined surface (30) of the substrate fixing member is formed in a shape in which a portion thereof is cut out to have an elastic force.