CN217195118U - Circuit board pulling device - Google Patents

Abstract

The utility model discloses a circuit board pull-out ware, including axle, support, fly leaf, lifting hook, dog fixed connection is in the support, the fly leaf is located in the support and the lower surface quilt of fly leaf the dog supports, the lower extreme of axle passes the fly leaf, the lower extreme of lifting hook is hook-like structure. The utility model discloses an at first utilize the support to support at quick-witted case side board, guaranteed the extraction tool foundation to the principle of make full use of moment distributes the fastening force average between circuit board contact pin and socket to the hand of holding the fly leaf. The operation method not only saves labor for operators, but also ensures that the contact pins are stressed uniformly in the process of separating the circuit board from the socket, and greatly reduces the contact pin abrasion.

Description

Circuit board pulling device

Technical Field

The utility model belongs to the technical field of electromechanical device, especially, relate to a circuit board pull-out ware.

Background

Printed circuit boards (hereinafter referred to as circuit boards) are one of the important components of electronic products, and are small enough to radios, large enough to computer systems, communication systems, and radar systems, and as long as electronic components are present, the electrical connection between them requires the use of circuit boards. The electronic product manufactured by the circuit board has the advantages of high reliability, good consistency, light weight, small volume, easy standardization and the like.

The circuit board is generally mounted in the chassis in a screw-fastening manner or a direct-insertion manner. The screw fastening type is that a circuit board is fixed on an insulating panel by fasteners such as screws, sleeves and the like, and the circuit board is connected with other components through plugs or wires; the direct-insert circuit board (shown in figures 1 and 2) is simple and convenient to disassemble and assemble, is connected with a motherboard socket of a case through a direct-insert multi-pin plug, and is generally used in electronic equipment with high integration level and complex parameters.

In recent years, the electronic industry is rapidly developed, the related fields are wide, and the application of the direct-insert circuit board is wider along with the higher and higher requirements of users on the maintainability of electronic products. Therefore, the circuit board needs to be frequently disassembled during debugging and repairing. For the direct-insertion circuit board, a common disassembling tool in the industry is generally called a 'puller' (fig. 3). When the socket is used, the two L-shaped hooks of the extractor are aligned with the positioning holes of the circuit board, and the circuit board can be taken out by applying force along the direction that the circuit board is separated from the socket.

This type pull-out ware simple structure, but the operator is direct to its application of force, can lead to effort and contact pin direction nonparallel, especially experience person's operation is easily rocked about when taking out the circuit board, and in the long run, will aggravate the wearing and tearing between circuit board contact pin and socket. In addition, because the distance between the two L-shaped hooks is fixed, the puller cannot meet the dismounting requirement aiming at the circuit boards with different positioning hole center distances.

The existing disassembling method is as follows:

(1) the locking pieces 13 on the two sides of the circuit board are unscrewed by a straight line until the locking pieces can shake when the screwing is continued;

(2) inserting a straight line into a gap between a locking piece 13 at one side of the circuit board and a groove 15 of the case, and prying the locking piece 13 in multiple directions to enable the circuit board pins and a socket 23 of the case to generate relative displacement;

(3) inserting the linear block into the gap between the locking piece at the other side of the circuit board and the groove of the case (figure 8), and repeating the operation of the step 2;

(4) repeating the step 2 and the step 3 for multiple times, respectively pinching the positions near the circuit board positioning holes by two hands, shaking the circuit board, and then exerting force upwards in the vertical direction to take out the circuit board;

(5) and if the circuit board can not be taken out by both hands, continuously repeating the step 2 and the step 3 until the circuit board can be taken out.

The operation method is relatively complicated and has the following main defects through the steps:

(1) the dependence on experience is large. Unscrewing the locking part, prying the circuit board in a gap between the locking part and the case groove in a straight shape, forcibly taking out the circuit board by two hands and the like, requiring operators to have rich experience, ensuring that each step is proper in force application, ensuring that the undersize cannot achieve the effect, and easily generating surface damage when the step is too large. Therefore, the operation method has larger subjectivity, the experience is not easy to standardize, and the operation method is particularly not suitable for common operators or novices.

(2) The locking piece and the case are easily damaged. Retaining member, product machine case are mostly aluminium system, and a word plays to be stainless steel material, and it prizes when the retaining member in the box space, and the scratch is left unavoidably at retaining member and organism, and long-term dismouting can increase the damage to the two surface coating.

(3) Aggravate the damage of the circuit board pin. When a straight line is lifted to pry the locking piece at the right end of the circuit board and generate displacement, the contact pin at the bottom of the circuit board can move in the non-vertical direction, so that the contact pin and the insertion hole in the motherboard socket of the chassis generate larger friction than that in a static state; when the locking piece at one end of the circuit board is pried, the circuit board pin will have large friction with the other side of the jack of the chassis base, the circuit board is disassembled and assembled for a long time, abrasion between the pin and the jack is aggravated, and the service life of the connector is shortened.

SUMMERY OF THE UTILITY MODEL

For solving the circuit board does not have special extracting tool, the problem of wearing and tearing between hard, the easy aggravation circuit board contact pin of concurrent operation process and socket, the utility model aims to provide a circuit board pull-out ware.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a circuit board puller comprises a shaft, a bracket, a movable plate, a lifting hook and a stop block,

the stop block is fixedly connected in the support, the movable plate is located in the support, the lower surface of the movable plate is supported by the stop block, the lower end of the shaft penetrates through the movable plate, the lower end of the lifting hook penetrates through the movable plate, and the lower end of the lifting hook is of a hook-shaped structure.

Furthermore, a block hole is formed in the upper surface of the block, and the lower end of the shaft extends into the block hole.

Further, the stop block hole is a threaded hole, and the lower end of the shaft comprises an external thread matched with the threaded hole.

Furthermore, the upper end of the shaft is limited on the outer surface of the upper end of the bracket.

Further, the shaft has a shoulder in the middle.

Further, still include the spring, the spring cover is located the surface of axle and is located between shaft shoulder and the fly leaf.

Further, the stop block is fixedly connected in the bracket through a screw.

Further, the number of the shafts is two, and the number of the hooks is two.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the operation is labor-saving, and the abrasion of the contact pin is reduced. The utility model discloses an at first utilize the support to support at quick-witted case side board, guaranteed the extraction tool foundation to the principle of make full use of moment distributes the fastening force average between circuit board contact pin and socket to the hand of holding the fly leaf. The operation method not only enables an operator to feel more labor-saving, but also ensures that the contact pins are uniformly stressed in the process of separating the circuit board from the socket, and greatly reduces the contact pin abrasion.

2. The application range is wide. The utility model discloses a still can be applied to the circuit board of multiple size, the rectangle through-hole design of fly leaf bottom makes the lifting hook can dismantle to the circuit board of locating hole centre-to-centre spacing difference like this at 60 angular range internal rotations, has enlarged the application range of pull-out ware.

3. Surface damage is avoided. Because the condition that the locking piece of the circuit board is repeatedly pried by one-time lifting in the original circuit board decomposing method is avoided, the utility model avoids the damage of the original method to the surface coatings of the case body, the locking piece of the circuit board and the like.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic diagram of an inline circuit board (front side).

Fig. 2 is a schematic diagram of an in-line circuit board (reverse side).

Fig. 3 is a schematic diagram of a conventional extractor on the market.

Fig. 4 is the general assembly drawing of the circuit board extractor of the present invention.

Fig. 5 is a schematic view of the shaft structure.

Fig. 6 is a schematic view of a stent structure.

Fig. 7 is a schematic view of the movable plate structure.

Fig. 8 is a schematic view of a hook structure.

Fig. 9 is a schematic view of the stopper structure.

Fig. 10 is a schematic view of a spring structure.

Fig. 11 is a view of a product case.

Fig. 12 is a schematic view (initial position) of the operation method of the circuit board extractor of the present invention.

Fig. 13 is a schematic view of the operation method of the circuit board extractor of the present invention (to take out the circuit board).

Reference numerals: 1. a shaft; 2. a support; 3. a movable plate; 4. a hook; 5. a stopper; 6. stainless steel cross recessed pan head screws; 7. a stainless steel spring washer; 8. a stainless steel flat pad; 9. a spring; 10. a metal reinforcing plate; 11. an epoxy resin body; 12. a socket; 13. a locking member; 14. positioning holes; 15. a groove; 16. a side plate; 17. a shaft shoulder; 18. a top via; 19. a circular through hole; 20. a rectangular through hole; 21. side screw holes; 22. a top screw hole; 23. a case motherboard; 24. a side through hole; 25. a circuit board; 26. the section of the box body; 27. a motherboard socket.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for purposes of illustration only.

Referring to fig. 4-13, a circuit board extractor comprises a support 2 (1), a movable plate 3 (1), a shaft 1 (2), hooks 4 (2), a block 5 (2), springs 9 (2), cross-recessed pan head screws 6 (8), spring washers 7 (8), and flat washers 8 (8),

the stop block 5 is fixedly connected in the support 2, the movable plate 3 is positioned in the support 2, the lower surface of the movable plate 3 is supported by the stop block 5, the lower end of the shaft 1 penetrates through the movable plate 3, the lower end of the lifting hook 4 penetrates through the movable plate 3, and the lower end of the lifting hook 4 is of a hook-shaped structure.

Specifically, a block hole 22 is formed in the upper surface of the block 5, and the lower end of the shaft 1 extends into the block hole 22.

Specifically, the blocking block hole 22 is a threaded hole, and the lower end of the shaft 1 includes an external thread matched with the threaded hole.

Specifically, the upper end of the shaft 1 is limited on the outer surface of the upper end of the bracket 2.

In particular, the shaft 1 has a shoulder 17 in the middle.

Specifically, the spring 9 is further included, and the spring 9 is sleeved on the outer surface of the shaft 1 and is located between the shaft shoulder 17 and the movable plate 3.

In particular, the stop 5 is fixedly connected in the support 2 by means of a screw 6.

Specifically, the number of the shafts 1 is two, and the number of the hooks 4 is two.

Referring to fig. 6, the bracket 2 is made of 2a12 aluminum plate with a wall thickness of 2mm, and is made into a cavity-shaped part through sheet metal and welding processes, and the support legs at the two ends respectively straddle the side plates 16 of the product box body to serve as supports for the whole pulling action. The movable plate 3 moves in parallel in the cavity of the bracket 2, and the surface of the movable plate is in clearance fit with the inner surface of the cavity of the bracket, so that the translation resistance is reduced as much as possible.

Support 2 not only regards as the support of whole pull-up action, more will the utility model discloses each part is unified to whole. The two shafts 1 respectively pass through a top through hole 18 of the bracket 2, a spring 9 and a circular through hole 19 of the movable plate 3 and are connected with screw holes 22 of the two stop blocks 5; the standard member passes through the side through hole 24 of the bracket 2 to be connected with the screw hole 21 of the stop block 5.

Referring to fig. 5, the number of the shafts 1 is 2, and the parameters of the shafts are completely consistent. The part is made of No. 45 steel material. In the extractor, two shafts 1 sequentially pass through the bracket 2, the spring 9 and the circular through hole 19 of the movable plate 3 to be connected with the top screw hole 22 of the stop block 5, so that the movable plate 3 is ensured to move in the direction parallel to the shafts 1.

Referring to fig. 7, the movable plate 3 is made of 2a12 aluminum plate with a wall thickness of 2mm, and is manufactured into a part similar to a U-shaped cavity through a sheet metal process. The movable plate 3 moves along the direction parallel to the shaft 1 under the restraint of the inner surface of the bracket 2, the shaft 1, the spring 9 and the stop 5; the spring 9 applies force to the movable plate 3 to make the initial state be the lowest point, namely, the lowest point is located on the upper surface of the stop block 5; the hook 4 passes through the rectangular through hole 20 on the bottom surface of the movable plate 3 and can move up and down along with the movable plate 3.

Referring to fig. 7, the number of hooks 4 is 2, and the parameters of the hooks and the hooks are completely consistent. The hook 4 is formed by processing a 2A12 aluminum plate with the wall thickness of 2.5mm, the head part of the hook adopts a round angle design, and the hook can freely rotate at the position of the rectangular through hole 20 of the movable plate 3. In the plane of the movable plate 3 moving along the shaft 1, the hooks can rotate within an angle of about 60 degrees, so that the distance between the tail ends of the two hooks ranges from (125-175) mm, and the distance covers the range of the center distance of the positioning holes of the circuit board in the production field. In the assembly, after the lifting hook 4 passes through the rectangular through hole 20 at the bottom of the movable plate 3, the tail end of the lifting hook is bent to be (5-10) mm, and the lifting hook can be inserted into a positioning hole of a circuit board. Under the action of the movable plate 3, the circuit board can be separated from the motherboard socket by the lifting hook 4 driven by the movable plate.

Referring to fig. 9, the number of the stoppers 5 is 2, and the parameters of the stoppers are completely consistent. The stop block 5 is made of No. 45 steel material, has higher strength, is used as the support of the movable plate 3, ensures that the movable plate 3 has a horizontal initial position under the action of the shaft 1 and the spring 9, ensures that the direction of the circuit board separated from the motherboard socket is parallel to the direction of the contact pins, and reduces the abrasion of the contact pins and the socket as much as possible. The top screw hole 22 of the stop block 5 is connected with the shaft 1 through a screw thread, and the standard part passes through the side through hole 24 of the bracket 2 to be connected with the side screw hole 21 of the stop block 5.

Referring to fig. 10, the number of the springs 9 is 2, and the parameters of the two springs are completely consistent. The spring is made of 65Mn and passes through the shaft 1 to interact with the shoulder 17 and the movable plate 3, so that the movable plate 3 moves along the shaft 1 within the distance between the upper surface of the stopper 5 and the shoulder 17.

The assembly steps of the scheme are as follows:

(1) respectively penetrating the two shafts 1 through the two top through holes 18 of the bracket 2, and respectively penetrating the two springs 9 through the shafts 1 to the position of a shaft shoulder 17;

(2) two hooks 4 penetrate through two rectangular through holes 20 of the movable plate 3, so that the rounded corners of the heads of the hooks 4 are clamped at the edges of the rectangular through holes 20 and cannot fall off;

(3) the threaded ends of the two shafts 1 respectively penetrate through the circular through holes 19 of the movable plate 3, the movable plate 3 integrally moves in the cavity of the support 2, and the threaded ends of the shafts 1 completely penetrate through the circular through holes 19;

(4) aligning the top screw holes 22 of the two stop blocks 5 with the threaded end of the shaft 1, screwing the threaded end of the shaft 1 into the top screw holes 22 of the stop blocks 5 in a straight line, and stopping until the exposed threads of the shaft 1 have 5-10 thread pitches;

(5) the relation between the two stop blocks 5 and the inner side surface of the bracket 2 is adjusted to ensure that the side screw holes 21 (totally 8) of the stop blocks 5 are aligned with the side through holes 24 (totally 8) of the bracket 2, the cross-recessed pan head screws 6 (totally 8) sequentially pass through the stainless steel elastic pads 7 (totally 8), the stainless steel flat pads 8 (totally 8) and the side through holes 24 of the bracket 2, and the cross-recessed screwdriver is used for screwing each screw into the side screw holes 21 of the stop blocks 5, so that the stop blocks are fastened with the inner surface of the bracket and cannot move.

(6) The threaded end of the shaft 1 is threaded into the threaded hole of the stop 5 in a straight line until the shaft does not have its threads exposed.

(7) The bottom ends of the two lifting hooks 4 are bent (5-10) mm in the direction vertical to the plane of the movable plate moving along the shaft by using a vice, so that the tail ends of the lifting hooks 4 can be inserted into the positioning holes of the circuit board.

After the assembly is completed, the use steps are as follows:

a) standing a support 2 of the extractor at the supporting positions of two sides of a product box body;

b) inserting the hook into a locating hole of the circuit board (fig. 12);

c) the movable plate is held by one hand or two hands, the force is slowly exerted in the vertical direction, according to the actual situation, the hand force is gradually increased, and the circuit board is taken out (figure 13).

The key improvement point of the scheme is as follows:

1. lifting hook transverse angle of extraction tool is adjustable

Aiming at the difference of the center distances of two positioning holes of different circuit boards, the lifting hook of the extractor adopts a non-fixed design and passes through two rectangular holes on the bottom surface of the movable plate. In the plane that the fly leaf removed along the axle, the lifting hook can be at 60 jiaos rotations, has guaranteed the convenience of just aligning the circuit board locating hole, has enlarged pull-out ware application scope.

2. Vertical movement adopts spring, shaft and other combined design method

The design of two shafts and springs is adopted, so that the movable plate is restrained by the inner surface of the support, the shafts, the springs and the stop blocks, vertical movement is guaranteed with small resistance, the direction of taking out the circuit board is parallel to the direction of the contact pins, and damage between the contact pins and the motherboard socket is greatly reduced.

The alternative scheme of the scheme is as follows:

1. variations of the method of making the extractors

The manufacturing process of the bracket and the movable plate is changed. Aiming at the condition that the bracket is not easy to process as a deep cavity, the process method can be changed into the mode that two half cavities are connected through screws or welded, and even the bracket can be manufactured by adopting a 3D printing method, so that the cavity with the same effect as the original bracket is formed. The technological method of the movable plate can be improved as well.

And (4) changing the installation mode of the lifting hook. On the plane where the rectangular through hole of the movable plate is located, a hole is drilled in the side plate of the movable plate at a position which is a certain height away from the rectangular through hole, the bolt penetrates through the hole, the round hole in the upper portion of the lifting hook penetrates through the cavity, then the bolt continuously penetrates through the through hole in the side plate at the other end of the movable plate, and the positioning pin penetrates through the tail end of the bolt to prevent the bolt from falling off. Meanwhile, the bolt penetrates through a round hole between the upper part of the lifting hook and the movable plate and can be made into a horizontal long groove, so that the bolt corresponding to the lifting hook can be slid aiming at circuit boards with different positioning hole center distances, the distance between the lifting hooks is adjustable, and the circuit boards can be guaranteed to move in the vertical direction when being pulled out every time.

2. Change of material of parts

The bracket, the shaft, the stop block, the spring and the like can be made of other metal materials, such as other hard aluminum, stainless steel and the like.

3. Variation of part parameters

The wall thickness of the parts such as the bracket, the movable plate and the like can be adjusted.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (8)

1. A circuit board puller is characterized by comprising a shaft (1), a bracket (2), a movable plate (3), a lifting hook (4) and a stop block (5),

dog (5) fixed connection is in support (2), fly leaf (3) are located in support (2) and the lower surface of fly leaf (3) is by dog (5) support, the lower extreme of axle (1) passes fly leaf (3), the lower extreme of lifting hook (4) is hook-like structure.

2. The circuit board extractor according to claim 1, wherein the stopper (5) has a stopper hole (22) formed on an upper surface thereof, and the lower end of the shaft (1) extends into the stopper hole (22).

3. The circuit board extractor according to claim 2, wherein the block hole (22) is a threaded hole and the lower end of the shaft (1) comprises an external thread cooperating with the threaded hole.

4. The circuit board extractor according to claim 1, wherein the upper end of the shaft (1) is limited to the outer surface of the upper end of the bracket (2).

5. The circuit board extractor according to claim 4, characterized in that the shaft (1) has a shoulder (17) in the middle.

6. The circuit board extractor according to claim 5, further comprising a spring (9), wherein the spring (9) is sleeved on the outer surface of the shaft (1) and located between the shoulder (17) and the movable plate (3).

7. The circuit board extractor according to claim 1, characterized in that the stop (5) is fixedly connected in the holder (2) by means of screws (6).

8. The circuit board extractor according to any of claims 1-7, wherein the number of shafts (1) is two and the number of hooks (4) is two.

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