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CN-224233913-U - Press-fitting structure for switch element on circuit board and circuit board

CN224233913UCN 224233913 UCN224233913 UCN 224233913UCN-224233913-U

Abstract

The utility model belongs to the technical field of circuit boards, and provides a press-fitting structure for a switch element on a circuit board and the circuit board, wherein the press-fitting structure comprises a body, a first side part, a second side part, a third side part and a fourth side part, wherein the first side part, the second side part, the third side part and the fourth side part are arranged around the body and are sequentially adjacent, and three pressing parts are arranged at intervals outside Zhou Jun; wherein, each pressing part is far away from the one end of body and all does not have the blocking structure, and each pressing part corresponds a switching element to offset with switching element. Compared with the prior art, twelve pressing parts are distributed on the lower cover plate along the circumferential direction of the lower cover plate, each pressing part corresponds to one switching element, and twelve switching elements can be adjusted simultaneously when the press-fit structure moves relative to the circuit board body, so that the adjustment efficiency of the switching elements on the circuit board body is improved.

Inventors

  • WANG ZHENGXING

Assignees

  • 宁波德业变频技术有限公司

Dates

Publication Date
20260512
Application Date
20250411

Claims (10)

  1. 1. A press-fitting structure for a switching element on a circuit board, comprising: The body, and a first side part, a second side part, a third side part and a fourth side part which are arranged around the body and are sequentially adjacent, wherein three pressing parts (240) are arranged at intervals outside Zhou Jun of the first side part, the second side part, the third side part and the fourth side part, One end of each pressing part (240) far away from the body is provided with a non-blocking structure, and each pressing part (240) corresponds to one switching element and is propped against the switching element (400); When the body moves, the pressing part (240) is driven to adjust the posture of the switching element (400).
  2. 2. A press-fit structure for a switching element on a circuit board according to claim 1, wherein the switching element comprises a switching body (410) and a pin (420), the switching body (410) being disposed at an angle to the pin (420), the body further comprising: An upper cover plate (210) and a lower cover plate (220) which are detachably connected, wherein an installation space is formed between the upper cover plate and the lower cover plate, and the pressing part (240) is arranged on the lower cover plate (220); A pressing plate (230) arranged in the installation space and provided with an elastic pressing foot (231) corresponding to the pressing part (240), wherein the elastic pressing foot (231) is embedded in a cavity of the pressing part (240); A reinforcing plate (250) provided in the installation space and abutted against the pressing plate (230); The pressing part (240) can drive the included angle between the switch body (410) and the pin (420) to be enlarged and enable the elastic presser foot (231) to be stressed and compressed due to the fact that the body receives pushing force along the direction that the body points to the switch element (400), and the lengths of the first side part, the second side part, the third side part and the fourth side part are consistent.
  3. 3. The press-fit structure for a switching element on a circuit board according to claim 2, wherein the pressing plate (230) is provided with a connecting portion (232), the upper cover plate (210) and the lower cover plate (220) are provided with mounting holes for the connecting portion (232) to communicate with the outside, and the connecting portion (232) is used for connecting with a connecting member for driving the press-fit structure (200) to switch between an elastic compression state and an expansion state.
  4. 4. The press-fit structure for a switching element on a circuit board according to claim 2, wherein an arc surface (241) is disposed in the pressing portion (240), and the shape of the elastic presser foot (231) is adapted to the arc surface (241) and abuts against the arc surface (241) so as to drive the elastic presser foot (231) to be in a compressed state when switching to an elastic compressed state.
  5. 5. The press-fit structure for a switching element on a circuit board according to claim 2, wherein a plurality of hooks (211) are distributed at intervals along a circumferential direction of the upper cover plate (210) toward one end of the lower cover plate (220), and the hooks (211) are abutted against an end surface of the lower cover plate (220) to connect the upper cover plate (210) and the lower cover plate (220).
  6. 6. The press-fit structure for a switching element on a circuit board according to claim 2, wherein a plurality of fastening caps (212) are arranged at two sides of the upper cover plate (210) at intervals, the fastening caps (212) are in one-to-one correspondence with the pressing portions (240) at two sides of the lower cover plate (220), and the fastening caps (212) are fastened at the outer sides of the pressing portions (240).
  7. 7. A press-fitting structure for a switching element on a circuit board as claimed in claim 2, wherein said lower cover plate (220) is provided with four mounting portions in its own circumferential direction, each of said mounting portions being equally spaced with three of said pressing portions (240).
  8. 8. A circuit board, comprising: A circuit board body (100), wherein the switching element (400) is fixed on the circuit board body (100) through the pin (420); A press-fit structure for a switching element on a circuit board according to any one of claims 2 to 7, said press-fit structure (200) being detachably connected to said circuit board body (100) and being located between said switching body (410) and said circuit board body (100); a heat sink (300) which is positioned on one side of the switch body (410) away from the circuit board body (100) and is abutted against the switch body (410), The press-fit structure (200) is used for adjusting the contact area between the switch body (410) and the heat dissipation piece (300) when being switched between the elastic compression state and the expansion state.
  9. 9. The circuit board of claim 8, wherein the heat dissipating member (300) is provided with a connecting hole (310), one end of the connecting member passes through the connecting portion (232) and is connected to the connecting hole (310), the other end of the connecting member abuts against the pressing plate (230), when the depth of the connecting member inserted into the connecting hole (310) is adjusted, the connecting member is used for driving the press-fit structure (200) to switch between the elastic compression state and the expansion state, the connecting hole (310) is a threaded hole, and the connecting member is a bolt corresponding to the connecting hole (310).
  10. 10. A circuit board according to claim 8, wherein the upper cover plate (210) is provided with a sleeve (213), the sleeve (213) extending through the circuit board body (100) for providing positioning between the upper cover plate (210) and the circuit board and for the connection member to pass through.

Description

Press-fitting structure for switch element on circuit board and circuit board Technical Field The utility model belongs to the technical field of circuit boards, and particularly relates to a press-fitting structure for a switch element on a circuit board and the circuit board. Background In the field of power electronics, an IGBT (insulated gate bipolar transistor) is used as a core switching element, and its mounting stability and heat dissipation efficiency directly affect device performance. In the traditional IGBT press-fitting technology, the switch element is spliced on the back of the circuit board through the bending pins, and the gap angle between the switch element and the circuit board is required to be adjusted by means of the pressing plate because the pins and the switch body form an included angle, so that the switch element is fully contacted with the heat dissipation piece. The traditional clamp plate adopts the monomer formula structure, and 1-2 IGBTs of single clamp plate only can be adapted, when a plurality of IGBTs of integration on the circuit board need carry out screw adjustment to each clamp plate one by one, lead to the installation consuming time and unable assurance multi-device angle's uniformity. Disclosure of utility model The utility model aims to solve the technical problem of providing a press-fitting structure for a switch element on a circuit board and the circuit board aiming at the current state of the art. The technical scheme adopted by the utility model for solving the technical problems is that the utility model provides a press-fitting structure for a switch element on a circuit board, which comprises the following components: The body, and the first side part, the second side part, the third side part and the fourth side part which are arranged around the body and are sequentially adjacent, wherein three pressing parts are arranged at intervals outside Zhou Jun of the first side part, the second side part, the third side part and the fourth side part, One end of each pressing part far away from the body is provided with a non-blocking structure, and each pressing part corresponds to one switching element and is propped against the switching element; when the body moves, the pressing part is driven to adjust the gesture of the switch element. The above-mentioned a pressure equipment structure for switch element on circuit board, switch element includes switch body and pin, the switch body with the pin becomes the contained angle setting, the body still includes: The upper cover plate and the lower cover plate are detachably connected, an installation space is formed between the upper cover plate and the lower cover plate, and the pressing part is arranged on the lower cover plate; the pressing plate is arranged in the installation space and is provided with an elastic pressing foot corresponding to the pressing part, and the elastic pressing foot is embedded in the cavity of the pressing part; The reinforcing plate is arranged in the installation space and is abutted against the pressing plate; The pressing part can drive the included angle between the switch body and the pin to be enlarged and enable the elastic presser foot to be stressed and compressed due to the fact that the body is pushed along the direction that the body points to the switch element; the first side portion, the second side portion, the third side portion, and the fourth side portion are uniform in length. In the above-mentioned press-mounting structure for a switching element on a circuit board, a connecting portion is disposed on the pressing plate, the upper cover plate and the lower cover plate are both provided with mounting holes for the connecting portion to communicate with the outside, and the connecting portion is used for connecting with a connecting piece for driving the press-mounting structure to switch between the elastic compression state and the expansion state. In the above-mentioned press-mounting structure for a switching element on a circuit board, an arc surface is disposed in the pressing portion, and the shape of the elastic presser foot is adapted to the arc surface and abuts against the arc surface, so as to drive the elastic presser foot to be in a compressed state when switching to an elastic compressed state. In the above-mentioned press-fit structure for a switch element on a circuit board, a plurality of hooks are distributed at intervals along the circumference of the upper cover plate at one end of the upper cover plate facing the lower cover plate, and the hooks are abutted to the end surface of the lower cover plate for connecting the upper cover plate and the lower cover plate. In the above-mentioned press-mounting structure for a switching element on a circuit board, a plurality of buckles are disposed on two sides of the upper cover plate at intervals, the buckles correspond to the pressing portions on two sides of the lower cover plate one by one, and