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CN-122028367-A - Pneumatic control device with guiding and heat dissipation functions and automobile seat

CN122028367ACN 122028367 ACN122028367 ACN 122028367ACN-122028367-A

Abstract

The invention belongs to the technical field of controllers, and particularly relates to a pneumatic control device with a guiding heat dissipation function and an automobile seat, which comprises at least one cover film unit (100), wherein the cover film unit (100) comprises a first groove-shaped part (100 a) and a second groove-shaped part (100 b) which are adjacently arranged and are opposite in opening direction, the cover film unit (100) is fixedly connected in the pneumatic control device and is close to a PCB, a common side wall between the first groove-shaped part (100 a) and the second groove-shaped part (100 b) is obliquely arranged, the opening area of the first groove-shaped part (100 a) and the opening area of the second groove-shaped part (100 b) are larger than the bottom area, the bottom area of the first groove-shaped part (100 a) is used for accommodating part of memory alloy wires (300), and the opening of the second groove-shaped part (100 b) is opposite to the PCB (200) to form a space for accommodating components. The heat dissipation effect on the PCB and the memory alloy wires is enhanced, so that the overall reliability of the device is improved.

Inventors

  • YOU LIHUI
  • ZHANG HAITAO

Assignees

  • 安闻科技集团股份有限公司

Dates

Publication Date
20260512
Application Date
20260211

Claims (12)

  1. 1. A pneumatic control device with a guiding heat dissipation function, comprising: the cover film unit (100) comprises a first groove-shaped part (100 a) and a second groove-shaped part (100 b) which are adjacently arranged and have opposite opening directions, and the cover film unit (100) is fixedly connected in the pneumatic control device and is close to the PCB; The common side wall between the first groove-shaped part (100 a) and the second groove-shaped part (100 b) is obliquely arranged, and the opening area of the first groove-shaped part (100 a) and the second groove-shaped part (100 b) is larger than the bottom area; the bottom area of the first groove-shaped part (100 a) is used for accommodating part of the memory alloy wire (300), and the opening of the second groove-shaped part (100 b) faces the PCB (200) to form an avoidance space for accommodating components.
  2. 2. A pneumatic control device with a guided heat dissipation function according to claim 1, characterized in that the first slot (100 a) and the second slot (100 b) comprise a first side wall (110), a second side wall (120) and a third side wall (130) connected in sequence; Wherein the first side wall (110) and the second side wall (120) are connected to form a first groove-shaped part (100 a), and the second side wall (120) and the third side wall (130) are connected to form a second groove-shaped part (100 b); wherein the top end of the first side wall (110) is higher than the top end of the second groove-shaped part (100 b).
  3. 3. A pneumatic control device with guiding and cooling function according to claim 1, characterized in that the bottom of the first groove-shaped part (100 a) and the second groove-shaped part (100 b) are connected with the PCB board (200), and the bottom of the second groove-shaped part (100 b) is provided with a first cooling hole (210) penetrating the PCB board (200).
  4. 4. A pneumatic control device with guiding and dissipating function according to claim 3, characterized in that the top of the second slot-like portion (100 b) is provided with a second dissipating hole (220), and the first dissipating hole (210) and the second dissipating hole (220) together form a through dissipating path.
  5. 5. A pneumatic control device with guiding and cooling function according to claim 3 or 4, characterized in that a third cooling hole (230) is formed on the bottom of the first groove-shaped part (100 a) and the PCB board (200) and is communicated with each other.
  6. 6. The pneumatic control device with the guiding and radiating function according to claim 1, further comprising a cover body, wherein the cover body is provided with a first cover body (400) arranged on one side of the cover film unit (100), a stand column (410) is arranged on the first cover body (400), a radiating channel (411) which is communicated with the inside and the outside of the pneumatic controller is formed in the stand column (410), and the wall body which forms the radiating channel (411) protrudes out of the upper surface and the lower surface of the first cover body (400).
  7. 7. A pneumatic control device with directed heat dissipation as set forth in claim 6 wherein the heat dissipation channel (411) has an inner diameter that gradually increases from one end to the other.
  8. 8. A pneumatic control device with guiding and dissipating heat as claimed in claim 6, wherein the upright (410) is arranged near the connection of the memory alloy wire (300) to the valve stem (500).
  9. 9. The pneumatic control device with the guiding and radiating function according to claim 6, wherein the cover further comprises a second cover (600), the second cover (600) is arranged at the other side of the cover film unit (100), the first cover (400) and the second cover (600) form a containing space, and the PCB (200) is located in the containing space; The PCB (200) covered by the second groove-shaped part (100 b) is provided with a first heat dissipation hole (210), and the second cover body (600) is provided with an air inlet hole (610); the air flow passes through the first heat dissipation holes (210) from the air inlet holes (610) and then flows out of the heat dissipation channels (411).
  10. 10. A pneumatic control device with directed heat dissipation according to claim 2, characterized in that the first side wall (110) is arranged vertically.
  11. 11. A pneumatic control device with guiding and dissipating function according to claim 2, characterized in that at least one hollow supporting protrusion (150) is provided on the second side wall (120) and/or the third side wall (130), and the hollow channel of the supporting protrusion (150) communicates the avoidance space formed by the second groove-like portion (100 b) with the first groove-like portion (100 a) to enhance heat convection.
  12. 12. An automobile seat, characterized by comprising a pneumatic control device with a guiding and radiating function according to any one of claims 1-11 for controlling the pneumatic massage or lumbar support function of the seat.

Description

Pneumatic control device with guiding and heat dissipation functions and automobile seat Technical Field The invention belongs to the technical field of controllers, and particularly relates to a pneumatic control device with a guiding and heat dissipation function and an automobile seat. Background As a core component of an electronic device, a controller typically integrates a Printed Circuit Board (PCBA) and various electronic components in a closed housing. In some precision control applications, such as in automotive seat pneumatic massage or lumbar support systems, shape memory alloy (Shape Memory Alloy, SMA) wires are used as micro-actuators. The SMA wire is heated by electrifying to shrink so as to drive mechanical parts such as a valve and the like to act, and after the power is off, the SMA wire needs to be cooled to restore the original shape so as to prepare for the next action. In the working process, a large amount of heat can be generated by the electrified heating of the SMA wire, and other electronic components on the PCBA can generate heat. This heat, if accumulated within a compact and airtight controller housing, will cause the internal ambient temperature to rise significantly. Excessive ambient temperature can seriously affect the cooling and resetting process of the SMA wire, so that the SMA wire cannot recover the initial length within a specified time, and the controller can respond to failure, action clamping stagnation and even complete failure, thereby seriously affecting the operation stability and reliability of the controller. In addition, during the assembly of the controller, it is necessary to precisely mount the fine SMA wire at a predetermined position. The prior controller internal structure is generally lack of an effective guiding structure, so that the threading and positioning process of the SMA wire is complex, the production assembly efficiency is reduced, the driving effect of the SMA wire can be influenced due to the deviation of the mounting position, and the SMA wire is damaged even in the mounting process. Therefore, designing a controller structure that can effectively dissipate heat and facilitate installation of SMA wires is a technical problem to be solved in the art. Disclosure of Invention In order to solve the above-mentioned problems in the prior art, that is, the problem of poor heat dissipation effect of the controller in the prior art, the present invention provides a pneumatic control device with guiding heat dissipation function, comprising: the cover film unit comprises a first groove-shaped part and a second groove-shaped part which are adjacently arranged and have opposite opening directions, and is fixedly connected in the pneumatic control device and close to the PCB; The common side wall between the first groove-shaped part and the second groove-shaped part is obliquely arranged, and the opening area of the first groove-shaped part and the second groove-shaped part is larger than the bottom area; the bottom area of the first groove-shaped part is used for accommodating part of the memory alloy wire, and the opening of the second groove-shaped part faces the PCB to form an avoidance space for accommodating components. Further, the first groove-shaped part and the second groove-shaped part comprise a first side wall, a second side wall and a third side wall which are sequentially connected; wherein the first side wall and the second side wall are connected to form a first groove-shaped part, the second side wall and the third side wall are connected to form a second groove-shaped part, Wherein the top end of the first side wall is higher than the top end of the second groove-shaped part. Further, the bottoms of the first groove-shaped part and the second groove-shaped part are connected with the PCB, and the bottom of the second groove-shaped part is provided with a first heat dissipation hole communicated with the PCB. Further, a second heat dissipation hole is formed in the top of the second groove-shaped portion, and the first heat dissipation hole and the second heat dissipation hole form a penetrating heat dissipation path together. Further, a third heat dissipation hole which is communicated with the bottom of the first groove-shaped part is formed in the PCB. Further, the pneumatic control device further comprises a cover body, wherein the cover body is arranged on one side of the cover film unit and is provided with a stand column, a heat dissipation channel which is communicated with the inner space and the outer space of the pneumatic controller is formed in the stand column, and a wall body which forms the heat dissipation channel protrudes out of the upper surface and the lower surface of the first cover body. Further, the inner diameter of the heat dissipation channel gradually increases from one end to the other end. Further, the upright post is arranged at a position close to the connection position of the memory alloy wire and