TW202121953A - Circuit board fixing assembly - Google Patents

Abstract

A circuit board fixing assembly is configured to fix a circuit board having a securing hole and includes a spool, a slider and a screw. The spool includes a head portion and a sliding slot located on a side of the head portion. The securing hole of the circuit board to configured to engage the spool. The slider is slidably disposed in the sliding slot and includes a screw hole. The screw hole runs through the slider. The screw includes a thread portion meshing with the screw hole of the slider. The slider is configured to move towards the head portion of the spool as the screw is rotated, so as to clamp the circuit board between the head portion and the slider.

Description

Circuit board fixing assembly

The present disclosure relates to a circuit board fixing assembly.

The casing of the electronic device is equipped with a fixing post to fix the circuit board. The existing fixing post is to make the hole on the circuit board sleeve the neck of the fixing post and be supported by the base below the neck. This design will have accumulated tolerances The problem, specifically, the tolerance of the height of the top surface of the base and the thickness of the circuit board will accumulate, which affects the accuracy of the position of the circuit board.

In view of this, one purpose of the present disclosure is to provide a circuit board fixing assembly that can avoid tolerance accumulation.

To achieve the above objective, according to some embodiments of the present disclosure, a circuit board fixing assembly is configured to fix a circuit board including a fixing hole, and includes a fixing post, a slider, and a screw. The fixing post includes a head and a sliding groove located on one side of the head, and the fixing hole of the circuit board is configured to be sleeved on the fixing post. The sliding block is slidably arranged in the sliding groove, and includes a screw hole penetrating the sliding block up and down. The screw includes a threaded part, and the threaded part is screwed with the screw hole of the slider. The slider is configured to move toward the head of the fixed column by the rotation of the screw, so as to clamp the circuit board between the head and the slider.

In one or more embodiments of the present disclosure, the fixing column further includes a screw positioning hole communicating with a sliding groove. The screw also includes a smooth part, and the smooth part is rotatably arranged in the screw positioning hole.

In one or more embodiments of the present disclosure, the sliding groove is located between the head and the screw positioning hole.

In one or more embodiments of the present disclosure, the sliding groove extends on one side of the head along the long axis direction of the fixed column.

In one or more embodiments of the present disclosure, the sliding groove is a rectangular sliding groove, and a cross section of the slider perpendicular to the long axis direction is rectangular.

In one or more embodiments of the present disclosure, the fixing post further includes a through hole, the through hole penetrates the head and communicates with the sliding groove, and the screw is at least partially located in the through hole.

In one or more embodiments of the present disclosure, the screw further includes a screw head, the screw passes through the through hole of the fixing column, and the screw head abuts against the side of the head of the fixing column away from the sliding groove.

In one or more embodiments of the present disclosure, the slider further includes a protrusion, and the protrusion protrudes from the bottom surface of the slider. The fixed column includes a sliding block positioning groove, and the sliding block positioning groove is configured to receive the convex part of the sliding block.

In one or more embodiments of the present disclosure, the screw hole of the slider penetrates the convex portion of the slider.

In one or more embodiments of the present disclosure, the slider is a metal slider.

To sum up, the circuit board fixing assembly of the present disclosure drives the sliding block to move by screws to clamp the circuit board between the sliding block and the head of the fixing column for fixing, which solves the problem of tolerance accumulation in the prior art.

In order to make the description of this disclosure more detailed and complete, reference may be made to the attached drawings and various embodiments described below. The elements in the drawings are not drawn to scale, and are provided only to illustrate the present disclosure. Many practical details are described below to provide a comprehensive understanding of this disclosure. However, those of ordinary skill in the relevant fields should understand that this disclosure can be implemented without one or more practical details. Therefore, these details are not Application to limit this disclosure.

Please refer to FIG. 1, which is an exploded view of the electronic device 100 according to an embodiment of the present disclosure. The electronic device 100 includes a casing 110, a circuit board 120, and a circuit board fixing assembly 200 disposed on the casing 110. The circuit board 120 includes a fixing hole 121, and the circuit board fixing assembly 200 is configured to match the fixing hole 121 of the circuit board 120 to fix the circuit board 120 in the casing 110. In some embodiments, the fixing hole 121 is a gourd hole, which includes a first end 121a and a second end 121b, and the maximum width of the first end 121a is smaller than the maximum width of the second end 121b.

Please also refer to FIG. 2, which is an exploded view of the circuit board fixing assembly 200 of the electronic device 100 shown in FIG. 1. The circuit board fixing assembly 200 includes a fixing post 210, a sliding block 220 and a screw 230. The fixing post 210 is disposed on the casing 110 (as shown in FIG. 1), and includes a head 211, a neck 212, and a base 213. The base 213 is connected to the casing 110, and the neck 212 is connected between the head 211 and the base 213, and is retracted relative to the head 211 and the base 213. In some embodiments, the fixing post 210 is riveted to the casing 110.

As shown in Figures 1 and 2, the fixing hole 121 of the circuit board 120 is configured to be sleeved on the fixing post 210, specifically, the fixing hole 121 of the circuit board 120 is configured to be sleeved on the neck 212 of the fixing post 210 . When fixing the circuit board 120, the assembler can make the head 211 of the fixing post 210 pass through the fixing hole 121 through the wider second end 121b of the fixing hole 121 of the circuit board 120, and then move the circuit board 120 to fix it. The pillar 210 moves relative to the circuit board 120 to the narrower first end 121 a of the fixing hole 121.

As shown in Figure 2, the fixed column 210 further includes a sliding groove 214, which is located on the side of the head 211 facing the casing 110. Specifically, the sliding groove 214 extends in the direction R of the long axis of the fixed column 210 One side of the head 211. In this embodiment, the sliding groove 214 is opened in the neck 212 and the base 213 and penetrates the neck 212 and part of the base 213 laterally.

Please refer to FIGS. 3 and 4 together, which are cross-sectional views of the circuit board fixing assembly 200 of the electronic device 100 shown in FIG. 1 in two different operating states. As shown in FIGS. 2 to 4, the sliding block 220 is slidably disposed in the sliding groove 214 of the fixed column 210, and includes a screw hole 221, which penetrates the sliding block 220 up and down. The screw 230 is arranged along the long axis direction R of the fixing column 210 and extends into the sliding groove 214. The screw 230 includes a threaded portion 231, and the threaded portion 231 is threadedly engaged with the threaded hole 221 of the slider 220 in the sliding groove 214.

With the above configuration, as shown in FIG. 4, the slider 220 can be moved toward the head 211 of the fixed post 210 by the rotation of the screw 230 to clamp the circuit board 120 between the head 211 and the slider 220 At the same time, the fixing of the circuit board 120 is completed, or as shown in Figure 3, the head 211 of the fixing post 210 is moved away from the fixed post 210 by the reverse rotation of the screw 230, so that the slider 220 is separated from the circuit board 120 to allow the circuit The board 120 is removed. In the above configuration, the circuit board 120 is fixed by abutting against the bottom surface of the head 211 of the fixing post 210, so there is no problem of tolerance accumulation, and the position accuracy of the circuit board 120 can be improved.

As shown in FIGS. 2 to 4, in some embodiments, the sliding groove 214 of the fixed column 210 is a rectangular sliding groove, and a cross section of the slider 220 perpendicular to the long axis direction R of the fixed column 210 is rectangular. As a result, the sliding block 220 can be engaged with the sliding groove 214, and the sliding block 220 is not easy to rotate with the screw 230, so it can move up and down in the sliding groove 214 smoothly along the screw 230. In some embodiments, the slider 220 is a metal slider, which includes a grounding effect, which can reduce electrostatic discharge (ESD).

As shown in FIGS. 2 to 4, in some embodiments, the fixing column 210 further includes a through hole 215, which penetrates the head 211 of the fixing column 210 and communicates with the sliding groove 214, and the screw 230 is at least partially located in the through hole Within 215. During assembly, the screw 230 can enter the sliding groove 214 through the through hole 215, so that the assembler can lock the screw 230 into the screw hole 221 of the slider 220, and rotate the screw 230 to adjust the position of the slider 220 so that the slider 220 can move upward. Move against the circuit board 120, or move downward to separate from the circuit board 120. In some embodiments, the screw 230 further includes a screw head 232, the screw 230 passes through the through hole 215 of the fixing column 210, and the screw head 232 abuts on the side of the head 211 of the fixing column 210 away from the sliding groove 214. The diameter of the through hole 215 is smaller than the outer diameter of the screw head 232, so that the screw head 232 can abut against the head 211 of the fixing post 210 to be supported.

As shown in FIGS. 2 to 4, in some embodiments, the fixing column 210 further includes a screw positioning hole 216, and the screw positioning hole 216 is a circular hole communicating with the sliding groove 214. The screw positioning hole 216 is opened in the base 213 of the fixing column 210, the sliding groove 214 is located between the head 211 and the screw positioning hole 216, and the screw positioning hole 216 is opposite to the through hole 215 via the sliding groove 214. The screw 230 also includes a smooth portion 233 without threads. The smooth portion 233 is located at the end of the screw 230 and is rotatably disposed in the screw positioning hole 216. In some embodiments, the through hole 215 of the fixing column 210 and the screw positioning hole 216 are arranged centering on the long axis of the fixing column 210.

As shown in FIGS. 2 to 4, in some embodiments, the slider 220 further includes a protrusion 222, and the protrusion 222 protrudes from the bottom surface of the slider 220. The fixing column 210 includes a slider positioning groove 217, and the slider positioning groove 217 is configured to receive the convex portion 222 of the slider 220. The screw hole 221 of the slider 220 passes through the protrusion 222 of the slider 220. When the protrusion 222 is located in the slider positioning groove 217, the screw hole 221 of the slider 220 is aligned with the screw positioning hole 216 of the fixing post 210. Therefore, when assembling, the protrusion 222 of the slider 220 is matched with the slider positioning groove 217 of the fixed column 210, and the screw hole 221 of the slider 220 is automatically aligned with the screw positioning hole 216 of the fixed column 210, which is convenient for the assembly personnel to lock in. The screw 230 makes the threaded part 231 of the screw 230 and the screw hole 221 of the slider 220 and the smooth part 233 at the end of the screw 230 enter the screw positioning hole 216 of the fixing post 210.

To sum up, the circuit board fixing assembly of the present disclosure drives the sliding block to move by screws to clamp the circuit board between the sliding block and the head of the fixing column for fixing, which solves the problem of tolerance accumulation in the prior art.

Although the present disclosure has been disclosed in the above manner, it is not intended to limit the present disclosure. Anyone who is familiar with this technique can make various changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the protection of this disclosure The scope shall be subject to the definition of the attached patent application scope.

100: electronic device 110: Chassis 120: circuit board 121: fixed hole 121a: first end 121b: second end 200: Circuit board fixing assembly 210: fixed column 211: Head 212: neck 213: base 214: Chute 215: Through hole 216: Screw positioning hole 217: Slider positioning groove 220: Slider 221: screw hole 222: Convex 230: screw 231: Threaded part 232: screw head 233: smooth part R: Long axis direction

In order to make the above and other objectives, features, advantages and implementations of the present disclosure more obvious and understandable, the description of the accompanying drawings is as follows: FIG. 1 is an exploded view of an electronic device according to an embodiment of the present disclosure. FIG. 2 is an exploded view showing the circuit board fixing assembly of the electronic device shown in FIG. 1. FIG. FIG. 3 is a cross-sectional view of the circuit board fixing assembly of the electronic device shown in FIG. 1 in a first operating state. FIG. 4 is a cross-sectional view of the circuit board fixing assembly of the electronic device shown in FIG. 1 in a second operating state.

110: Chassis

120: circuit board

121: fixed hole

200: Circuit board fixing assembly

210: fixed column

211: Head

213: base

214: Chute

215: Through hole

216: Screw positioning hole

217: Slider positioning groove

220: Slider

221: screw hole

222: Convex

230: screw

231: Threaded part

232: Screw

233: smooth part

R: Long axis direction

Claims (10)

A circuit board fixing component is configured to fix a circuit board including a fixing hole, and the circuit board fixing component includes: A fixing post comprising a head and a sliding groove, the sliding groove is located on one side of the head, wherein the fixing hole of the circuit board is configured to be sleeved on the fixing post; A sliding block slidably disposed in the sliding groove and including a screw hole, which penetrates the sliding block up and down; and A screw including a threaded portion that is threadedly engaged with the threaded hole of the slider, The sliding block is configured to move toward the head of the fixing column by the rotation of the screw, so as to clamp the circuit board between the head and the sliding block. The circuit board fixing assembly according to claim 1, wherein the fixing post further includes a screw positioning hole communicating with the sliding groove, and the screw further includes a smooth portion, and the smooth portion is rotatably disposed in the screw positioning hole. The circuit board fixing assembly according to claim 2, wherein the sliding groove is located between the head and the screw positioning hole. The circuit board fixing assembly according to claim 1, wherein the sliding groove extends on one side of the head along a long axis direction of the fixing column. The circuit board fixing assembly according to claim 4, wherein the sliding groove is a rectangular sliding groove, and a cross section of the sliding block perpendicular to the long axis direction is rectangular. The circuit board fixing assembly according to claim 1, wherein the fixing post further includes a through hole, the through hole penetrates the head and communicates with the sliding groove, and the screw is at least partially located in the through hole. The circuit board fixing assembly according to claim 6, wherein the screw further includes a screw head, the screw passes through the through hole of the fixing column, and the head of the screw head abuts against the fixing column away from the sliding groove On the side. The circuit board fixing assembly according to claim 1, wherein the slider further includes a convex portion protruding from a bottom surface of the slider, the fixing post includes a slider positioning groove, and the slider positioning groove is configured To receive the convex portion of the slider. The circuit board fixing assembly according to claim 8, wherein the screw hole of the slider penetrates the convex portion of the slider. The circuit board fixing assembly according to claim 1, wherein the slider is a metal slider.

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