CN219786892U - Limiting device - Google Patents

Abstract

The utility model relates to the technical field of chip processing, and discloses a limiting device which is used for welding a chip on a PCB, and comprises the following components: a bottom plate; the limiting pins are uniformly arranged on the bottom plate, raised surrounding edges are arranged on the limiting pins, and the limiting pins are matched to form a region for accommodating the chip; and the positioning column is fixedly arranged on the bottom plate, when the chip is arranged in the area, the limiting pins on the bottom plate are propped against the chip, the surrounding edge is propped against the side wall body of the chip, and the positioning column is embedded in the positioning hole on the PCB. In this way, the welding quality and welding efficiency are improved.

Description

Limiting device

Technical Field

The utility model relates to the technical field of chip processing, in particular to a limiting device for welding a chip on a PCB.

Background

CPU (Central Processing Unit) it is generally referred to as a CPU, which is one of the chips, and the CPU is typically fixed to the circuit board by soldering.

However, since the CPU is not effectively fixed during the soldering process, the position thereof on the circuit board may be moved during the soldering process, and even a warpage phenomenon may occur, which greatly affects the soldering quality and soldering efficiency of the chip.

Therefore, there is a need for a device that can be used to limit the position of the CPU during welding.

Disclosure of Invention

The utility model aims to provide a limiting device for welding a chip on a PCB (printed circuit board) so as to solve the defects in the background art and improve the welding quality and the welding efficiency.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a spacing device for soldering a chip on a PCB board, comprising: a bottom plate; the limiting pins are uniformly arranged on the bottom plate, raised surrounding edges are arranged on the limiting pins, and the limiting pins are matched to form a region for accommodating the chip; and the positioning column is fixedly arranged on the bottom plate, when the chip is arranged in the area, the limiting pins on the bottom plate are propped against the chip, the surrounding edge is propped against the side wall body of the chip, and the positioning column is embedded in the positioning hole on the PCB.

Preferably, the area is rectangular, and the limiting feet are arranged close to the corners of the area.

Preferably, the peripheral edge is provided with an arc-shaped abutting part, and after the peripheral edge is abutted against the side wall body of the chip, the abutting part is abutted against the corner position of the chip.

Preferably, the limit foot comprises a base, the base is fixed on the bottom plate, the base is provided with the surrounding edge, and the base and the surrounding edge are integrally formed.

Preferably, a reinforcing block is arranged between two adjacent limit pins, the reinforcing block is fixed on the bottom plate, the section of the reinforcing block is L-shaped, and when the chip is arranged in the area, the reinforcing block is propped against the chip.

Preferably, the horizontal height of the reinforcement block is the same as the horizontal height of the limit foot.

Preferably, the bottom plate is also provided with an opening.

Preferably, a baffle plate in a cross shape is further arranged near the opening, and divides the opening into a plurality of small holes.

Preferably, the material of the limiting feet is elastic material.

Preferably, the number of the limiting feet is four, the limiting feet are in a rectangular array, and each limiting foot is close to the corner position of the area.

Compared with the prior art, the utility model has the beneficial effects that: the fixing of the chip position during welding can be realized, the chip position is effectively limited, the phenomenon of chip position deviation and warping is avoided, and therefore the welding quality and the welding efficiency are improved.

Drawings

FIG. 1 is a schematic view of the back of the upper base plate of the positioning device;

FIG. 2 is a front view of the structure of the positioning device after the bottom plate is turned over;

FIG. 3 is a side view of the structure with the bottom plate on the restraint device flipped over;

FIG. 4 is a schematic side view of a reinforcing block;

fig. 5 is a schematic view of the front surface of the base plate.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The utility model provides a limiting device for welding a chip on a PCB (printed circuit board), and referring to figures 1, 2 and 3, the limiting device comprises a bottom plate 1, a plurality of limiting pins 2 and positioning columns 5, wherein the limiting pins 2 are provided with convex surrounding edges 3, a region 4 for accommodating the chip is formed between the limiting pins 2 in a matching way, when the chip is arranged in the region 4, the limiting pins 2 on the bottom plate 1 are abutted against the chip, the surrounding edges 3 are abutted against side wall bodies of the chip, finally, the positioning columns 5 are embedded in positioning holes on the PCB, and the positioning holes are formed in the PCB in advance and are specially used for mounting the positioning columns 5. Through the technical scheme, the chip can be fixed at the position during welding, the position of the chip is effectively limited, the phenomenon of deviation and warping of the chip position is avoided, and therefore welding quality and welding efficiency are improved.

In detail, as a preferred embodiment, the area 4 for accommodating the chip is rectangular, and the limiting pins 2 are disposed near the corner positions of the area 4, the rectangular area 4 is mainly used for mounting the chip in a rectangular shape, after the chip is mounted on the circuit board, the limiting device directly acts on the chip, and covers the chip through the area 4 on the bottom board 1, and then, since the limiting pins 2 are disposed near the corner positions of the area 4, the corner positions of the chip can be effectively limited during mounting, so that the positions of the whole chip are limited, the positions of the chip cannot be changed during the soldering process, and warping is avoided, thereby achieving the above purpose.

Further, the limiting leg 2 is specially used for propping against a chip, and the surrounding edge 3 arranged on the limiting leg 2 is contacted with the corner position of the chip, so that the surrounding edge 3 is provided with an arc-shaped propping part 6, and after the surrounding edge 3 is propped against the side wall body of the chip, the propping part 6 is propped against the corner position of the chip. More specifically, the surface area of the arc-shaped part is large enough to meet the mounting requirements of most types of chips, and the arc-shaped part can be in better contact with the chips, so that the effect is better when the chips are subjected to position limitation. In addition, this spacing foot 2 includes a base 7, base 7 is fixed on the bottom plate 1, set up on the base 7 the surrounding edge 3, the purpose that base 7 set up is to step up the height of surrounding edge 3, makes surrounding edge 3 can better, more smoothly directly support and lean on the corner position of chip, can also prevent simultaneously that whole bottom plate 1 from directly pressing on the chip from leading to the damage on the chip structure. Still further, in order to guarantee the structural strength between base 7 and the surrounding edge 3, base 7 with surrounding edge 3 integrated into one piece sets up, also can optimize spacing foot 2 production technology simultaneously, is favorable to production efficiency's improvement. Similarly, in order to improve the structural strength between the limiting leg 2 and the bottom plate 1, the limiting leg 2 and the bottom plate 1 may be integrally formed. In order to increase the structural strength of the positioning column 5, the positioning column 5 and the bottom plate 1 may be integrally formed, and the technical effects thereof are not repeated here.

In this embodiment, referring to fig. 1, 2, 3 and 4, in order to improve the limiting effect of the overall limiting device on the chip, a reinforcing block 8 is disposed between two adjacent limiting pins 2, the reinforcing block 8 is fixed on the bottom plate 1, and the cross section of the reinforcing block 8 is L-shaped, so that after the chip is disposed in the area 4, the reinforcing block 8 abuts against the chip. That is, when in actual use, after the limiting device is arranged on the chip, the limit foot 2 limits the chip, and meanwhile, the reinforcing block 8 can also have a limiting effect on the chip, through its own structure such as an L-shaped structure, the section is L-shaped, at this time, the reinforcing block 8 comprises a first block and a second block, the first block and the second block are mutually perpendicular, when in use, an L-shaped limiting part is formed between the first block and the second block, the limiting part directly acts on the chip and limits the position of the chip, and finally, the chip can be better limited by matching with the limit foot 2.

Further, referring to fig. 1 and 5, the base plate 1 is further provided with an opening 9, and the function of the opening 9 is to improve the heat dissipation performance of the chip during welding, and if the base plate 1 is completely free of the opening 9, heat during welding cannot be timely dissipated, and the performance of the chip is affected, so that the opening 9 is additionally provided on the base plate 1, and heat generated during welding of the chip can be timely dissipated, thereby protecting the structural integrity of the chip. Further, a cross-shaped baffle 11 is further disposed at a position close to the opening 9, the baffle 11 divides the opening 9 into a plurality of small holes 10, the baffle 11 is in a cross-shaped structure, so that a user can conveniently grasp the bottom plate 1 directly, and then the formed small holes 10 also have a heat dissipation function, and the principle is the same as that described above and is not repeated here.

In this embodiment, in order to prevent the limit pins 2 from damaging the chip structure, the limit pins 2 are made of an elastic material, such as a plastic material or a rubber material.

Referring to fig. 1, when four spacing legs 2 are disposed on the base plate 1, the four spacing legs 2 are in a rectangular array, and each spacing leg 2 is disposed adjacent to a corner of the area 4. That is, through such arrangement, four spacing feet 2 can be evenly distributed on the chip, thereby ensuring the stability of spacing and being beneficial to subsequent welding.

Variations and modifications to the above would be obvious to persons skilled in the art to which the utility model pertains from the foregoing description and teachings. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the utility model should be also included in the scope of the claims of the utility model. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present utility model in any way.

Claims (10)

1. A stop device for the welding of chip on the PCB board, its characterized in that includes:

a bottom plate;

the limiting pins are uniformly arranged on the bottom plate, raised surrounding edges are arranged on the limiting pins, and the limiting pins are matched to form a region for accommodating the chip; a kind of electronic device with high-pressure air-conditioning system

The positioning column is arranged and fixed on the bottom plate,

when the chip is arranged in the area, the limiting pins on the bottom plate are propped against the chip, the surrounding edge is propped against the side wall body of the chip, and the positioning columns are embedded in the positioning holes on the PCB.

2. The spacing device of claim 1 wherein the area is rectangular and the spacing feet are positioned adjacent corners of the area.

3. The limiting device according to claim 1, wherein an arc-shaped abutting portion is arranged on the surrounding edge, and the abutting portion abuts against the corner position of the chip after the surrounding edge abuts against the side wall body of the chip.

4. The spacing device of claim 1, wherein the spacing leg comprises a base, the base is fixed on the base plate, the base is provided with the peripheral edge, and the base and the peripheral edge are integrally formed.

5. The spacing device of claim 1, wherein a reinforcing block is disposed between two adjacent spacing legs, the reinforcing block is fixed on the base plate, and the reinforcing block has an L-shaped cross section, and the reinforcing block is disposed against the chip after the chip is disposed in the area.

6. The spacing device of claim 5, wherein the reinforcement block has a level that is the same as the level of the spacing feet.

7. The spacing device of claim 1, wherein the base plate is further provided with an opening.

8. The spacing device of claim 7 wherein a cross-shaped baffle is further disposed adjacent to the opening, the baffle dividing the opening into a plurality of apertures.

9. The spacing device of claim 1, wherein the spacing feet are made of an elastic material.

10. The spacing device according to claim 1, wherein four spacing legs are provided in a rectangular array therebetween, and each of the spacing legs is disposed adjacent a corner of the area.