Anti-play plug-in structure of circuit board and radiating fin

Abstract

The utility model relates to an anti-play plug-in structure of a circuit board and a radiating fin, which comprises the radiating fin and the circuit board, the radiating fin is provided with a pair of chucks used for clamping the circuit board, the width of the two chucks is consistent with that of the radiating fin, the opposite surfaces of the two chucks are respectively provided with a slot parallel to each other, and the slots are inserted into the slots. The edges of the two ends of the circuit board are respectively provided with a plug-in portion plugged with the two slots in a one-to-one correspondence mode, the portion, located between the two plug-in portions, of the circuit board is a main body portion, various electrical components are arranged on the main body portion, the width of the main body portion is smaller than that of the two chucks, and the width of the plug-in portions is consistent with that of the two chucks. The two ends, in the extending direction of the inserting groove, of the inserting part extend out of the body part. According to the utility model, the technical goal that the circuit board does not move in the radiating fin is realized by utilizing the butting of the plugging part of the circuit board and the external limiting part of the radiating fin, so that the empty areas formed on the two sides of the main body part of which the width is smaller than that of the chuck are convenient for the circulation of sealing radiating glue during glue filling.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board assembly, and in particular relates to an anti-movement plug-in structure for a circuit board and a heat sink. Background Art

[0002] In order to avoid the adverse consequences of bolt connections on the circuit board, such as warping and collision, we have developed a plug-in connection method to connect the circuit board and the heat sink, which effectively avoids the above problems. However, when designing the plug-in connection structure, we found that if the slot width on the circuit board is designed to be too small, the robot will find it difficult to accurately insert the circuit board into the slot during automated assembly, making automated assembly difficult to implement. If the slot width is designed to be slightly larger, the circuit board will move along the slot during later transportation or glue filling, causing the assembly position of the circuit board and the heat sink to change, affecting the later assembly with the equipment. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a circuit board and heat sink anti-movement plug-in structure to solve the technical problem of the circuit board moving in the slot due to the clearance between the slot and the circuit board when the circuit board and the heat sink are plugged in and connected.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: an anti-movement plug-in structure for a circuit board and a heat sink, comprising a heat sink and a circuit board, a pair of clamps for clamping the circuit board provided on the heat sink, the width of the two clamps being consistent with the width of the heat sink, a slot parallel to each other being respectively provided on the facing surfaces of the two clamps, the two end edges of the circuit board respectively forming plug-in parts corresponding one-to-one with the two slots, and the part of the circuit board located between the two plug-in parts being the main body, various electrical components being arranged in the main body, the width of the main body being smaller than the width of the two clamps, the width of the plug-in part being consistent with the width of the two clamps, and both ends of the plug-in part along the extension direction of the slot extending out of the main body.

[0005] As a preferred solution, the plug-in portion and the main body portion transition through an arc inner angle.

[0006] The top of the fixing plate is located at the top of the fixing plate, and the bottom of the fixing plate is located at the bottom of the fixing plate, and the fixing plate is connected with the fixing plate to the fixing plate.

[0007] As a preferred solution, the support sheet is provided with a strain groove extending along the extension direction of the slot. The strain groove is located in the slot and passes through both ends of the support sheet.

[0008] As a preferred solution, the base plate, the supporting plate, the upper clamping plate, the lower clamping plate and the locking plate are integrally formed, and a large number of fins are also integrally formed on the bottom surface of the base plate.

[0009] The beneficial effects of the present invention are as follows: first, the present invention can achieve the technical goal of preventing the circuit board from moving in the heat sink by utilizing the plug-in portion of the circuit board to abut against the external limiting component of the heat sink; in this way, the empty area formed on both sides of the main body portion, which is smaller in width than the clamp, facilitates the circulation of the sealed heat dissipation glue during glue pouring.

[0010] The utility model further provides a locking slot and a locking pin on the outside of the clamp head, and utilizes the principle of leverage to deform the upper clamping piece toward the lower clamping piece to reduce the width of the slot, thereby clamping the circuit board. This allows the circuit board to be stably connected to the slot without movement even when there is no external limiting component, and does not affect automated assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0012] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0013] Figure 2 It is the main view of the utility model;

[0014] Figure 3 It is a partial enlarged view of the heat sink of the utility model;

[0015] Figure 4This is a top view of the circuit board;

[0016] Figures 1 to 4 Middle: 1. Heat sink; 101. Base; 102. Fin; 2. Circuit board; 201. Connecting part; 202. Main body; 203. Arc inner corner; 3. Clamp; 301. Support plate; 302. Upper clamp; 303. Lower clamp; 304. Locking plate; 4. Slot; 5. Locking groove; 6. Groove; 7. Locking pin; 8. Strain groove. DETAILED DESCRIPTION

[0017] The specific implementation scheme of the present utility model is described in detail below with reference to the accompanying drawings.

[0018] For the convenience of observation, the lines in the attached figure are simplified. Figures 1 to 4 Electrical components are omitted on the middle circuit board 2.

[0019] like Figures 1 to 4 The shown structure is an anti-movement plug-in connection structure for a circuit board and a heat sink, comprising a heat sink 1 and a circuit board 2. The heat sink 1 is provided with a pair of clamps 3 for clamping the circuit board 2. The width of the two clamps 3 is consistent with the width of the heat sink 1. A slot 4 parallel to each other is respectively provided on the facing surfaces of the two clamps 3. The two end edges of the circuit board 2 respectively form a plug-in portion 201 that corresponds one-to-one with the two slots 4, and the portion of the circuit board 2 located between the two plug-in portions 201 is the main body 202. Various electrical components are arranged in the main body 202. The width of the main body 202 is smaller than the width of the two clamps 3. The width of the plug-in portion 201 is consistent with the width of the two clamps 3. Both ends of the plug-in portion 201 along the extension direction of the slot 4 extend out of the main body 202.

[0020] The above technical solution can utilize the plug-in portion 201 of the circuit board 2 to abut against the external limiting component of the heat sink 1 to achieve the technical goal of preventing the circuit board 2 from moving inside the heat sink 1, and the empty area formed on both sides of the main body 202 with a width smaller than the clamp 3 facilitates the circulation of the sealed heat dissipation glue during glue pouring.

[0021] In this embodiment, the plug-in portion 201 and the main body 202 preferably transition through the arc inner corner 203 to improve the strength of the portion of the plug-in portion 201 protruding from the main body 202 and avoid breakage.

[0022] The heat sink 1 described in this embodiment includes a base plate 101 arranged parallel to the bottom of the circuit board 2, two support plates 301 respectively connected vertically to the two ends of the base plate 101, and an upper clip 302 and a lower clip 303 respectively connected to any one of the support plates 301, the upper clip 302 and the lower clip 303 are both parallel to the base plate 101, the upper clip 302 is located at the top of the support plate 301, the lower clip 303 is located in the middle of the support plate 301, the two sides of the upper clip 302 are respectively exposed outside the support plate 301, the lower clip 303 is arranged on the opposite sides of the two support plates 301, and a slot 4 is formed between the lower clip 303 and the upper clip 302, and the support plate 301, the upper clip 302 and the lower clip 303 together constitute the chuck 3. This embodiment further provides a locking piece 304 on the back side of the two support pieces 301. The locking piece 304 is parallel to and has the same height as the lower clamping piece 303. A locking groove 5 is formed between the locking piece 304 and the corresponding upper clamping piece 302. A circular arc-shaped groove 6 is provided on the top surface of any locking piece 304, and a circular arc-shaped groove 6 is also provided on the bottom surface of any upper clamping piece 302. The locking piece 304 and the two grooves 6 on the corresponding upper clamping piece 302 are directly opposite to each other. A cylindrical locking pin 7 is provided in the locking groove 5. When the locking pin 7 is inserted into the locking groove 5, it is respectively embedded in the two grooves 6. The diameter of the locking pin 7 is greater than the maximum distance between the two grooves 6, and both ends of the locking pin 7 are convex hemispherical.

[0023] When the locking pin 7 is inserted into the locking slot 5, it lifts the end of the upper clip 302 away from the circuit board 2. Under the action of the lever, the end of the upper clip 302 holding the circuit board 2 tilts downward, thereby narrowing the width of the slot 4 and firmly clamping the circuit board 2 in the slot 4. Because both ends of the locking pin 7 are hemispherical, even if there is a certain error in alignment with the locking slot 5, the hemispherical surface will guide it and slide into the two grooves 6 in the locking slot 5.

[0024] The support plate 301 is provided with a strain groove 8 extending along the extension direction of the slot 4. The strain groove 8 is located within the slot 4 and passes through both ends of the support plate 301. The provision of the strain groove 8 reduces the resistance of the upper clamping plate 302 to the circuit board 2. After the upper clamping plate 302 compresses the circuit board 2, it reduces the internal stress of the chuck 3, thereby extending the service life of the chuck 3.

[0025] In this embodiment, the base plate 101 , the support plate 301 , the upper clamping plate 302 , the lower clamping plate 303 and the locking plate 304 are integrally formed. A large number of fins 102 are also integrally formed on the bottom surface of the base plate 101 to improve the heat dissipation effect.

[0026] The working process of the utility model is: first, the circuit board 2 is inserted between the two clamps 3 on the heat sink 1, so that the plug-in parts 201 at both ends of the circuit board 2 are inserted into the slots 4 on the two clamps 3, and then two locking pins 7 are inserted into the locking slots 5 respectively. The locking pins 7 expand the locking slots 5 and tighten the slots 4 in the opposite direction, and the circuit board 2 is tightly stuck in the slots 4.

[0027] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some embodiments of its application, and are not intended to limit the present invention. It should be noted that a person skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A circuit board and heat sink anti-movement plug-in structure, comprising a heat sink (1) and a circuit board (2), characterized in that: The heat sink (1) is provided with a pair of clamps (3) for clamping the circuit board (2), the width of the two clamps (3) being consistent with the width of the heat sink (1), and a slot (4) parallel to each other is respectively provided on the facing surfaces of the two clamps (3), and the two end edges of the circuit board (2) respectively form a plug-in portion (201) that plugs into the two slots (4) in a one-to-one correspondence, and the portion of the circuit board (2) located between the two plug-in portions (201) is the main body (202), and various electrical components are arranged in the main body (202), the width of the main body (202) is smaller than the width of the two clamps (3), the width of the plug-in portion (201) is consistent with the width of the two clamps (3), and both ends of the plug-in portion (201) along the extension direction of the slot (4) extend out of the main body (202).

2. The anti-movement plug-in structure for a circuit board and a heat sink according to claim 1, characterized in that: The plug-in portion (201) and the main body portion (202) transition through an arc inner corner (203).

3. The anti-movement plug-in structure for a circuit board and a heat sink according to claim 1, characterized in that: The heat sink (1) comprises a base plate (101) arranged parallel to the bottom of the circuit board (2); the clamp (3) comprises two support plates (301) respectively connected perpendicularly to the two ends of the base plate (101); and an upper clamp (302) and a lower clamp (303) respectively connected to any one of the support plates (301); the upper clamp (302) and the lower clamp (303) are both parallel to the base plate (101); the upper clamp (302) is located at the top of the support plate (301); the lower clamp (303) is located in the middle of the support plate (301); both sides of the upper clamp (302) are exposed outside the support plate (301); the lower clamp (303) is arranged on the opposite sides of the two support plates (301); and an insert is formed between the lower clamp (303) and the upper clamp (302). Groove (4), a locking piece (304) is respectively provided on the back surface of the two supporting pieces (301), the locking piece (304) is parallel to and has the same height as the lower clamping piece (303), and a locking groove (5) is formed between the locking piece (304) and the corresponding upper clamping piece (302), a circular arc groove (6) is opened on the top surface of any locking piece (304), and a circular arc groove (6) is also opened on the bottom surface of any upper clamping piece (302), the locking piece (304) and the two grooves (6) on the corresponding upper clamping piece (302) are vertically opposite, and a cylindrical locking pin (7) is provided in the locking groove (5), and when the locking pin (7) is inserted into the locking groove (5), it is respectively embedded in the two grooves (6), the diameter of the locking pin (7) is greater than the maximum distance between the two grooves (6), and both ends of the locking pin (7) are in the shape of convex hemispherical surfaces.

4. The anti-movement plug-in structure for a circuit board and a heat sink according to claim 3, characterized in that: The support sheet (301) is provided with a strain groove (8) extending along the extension direction of the slot (4); the strain groove (8) is located in the slot (4) and passes through both ends of the support sheet (301).

5. The anti-movement plug-in structure for a circuit board and a heat sink according to claim 3, characterized in that: The base plate (101), the supporting plate (301), the upper clamping plate (302), the lower clamping plate (303) and the locking plate (304) are integrally formed, and a large number of fins (102) are also integrally formed on the bottom surface of the base plate (101).

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