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CN-224217432-U - High-stability pressure switch for electric connection

CN224217432UCN 224217432 UCN224217432 UCN 224217432UCN-224217432-U

Abstract

The application discloses a pressure switch with high stability in electric connection, which comprises a shell, wherein a movable cavity is arranged in the shell, a switch component is arranged in the movable cavity, the switch component comprises a static contact piece and a movable contact piece, the two static contact pieces are provided with inclined static contact pieces, the two static contact pieces are folded and inclined in opposite directions, an electric connection piece penetrating through the outside of the shell is electrically connected to the static contact pieces, opposite inclined surfaces of the two static contact pieces are electric connection surfaces, the movable contact piece comprises a movable contact frame and a movable contact connected, the movable contact is positioned between the two electric connection surfaces, the side surface of the movable contact between the two electric connection surfaces is a touch surface, the touch surface is a round table surface, the touch surface is positioned between the two electric connection surfaces, one side of the movable contact frame is provided with a pushing piece, the other side of the touch frame is provided with a reset component, the pushing piece faces or is back to the movable contact frame to move, the reset component abuts against and pushes the movable contact frame, the touch surface and the movable contact surface is pushed by the pushing piece, reliable contact or separation is realized under the pushing of the pushing piece, and poor contact area between the movable contact and the static contact is avoided.

Inventors

  • Ye Hengte
  • Cheng Heyin
  • LIU ZHONGLING

Assignees

  • 瑞安市昌国汽配有限公司

Dates

Publication Date
20260508
Application Date
20250428

Claims (8)

  1. 1. The utility model provides a high-stability pressure switch of electricity connection, including casing (1), its characterized in that, be equipped with movable chamber (13) in casing (1), install switch module (2) in movable chamber (13), switch module (2) are including static contact piece (21) and movable contact piece (22), the quantity of static contact piece (21) is two, two static contact pieces (21) are located the same side and are equipped with inclined static contact piece (211), two static contact pieces (211) are closed in opposite directions and incline, be connected with electric connection piece (23) that runs through outside casing (1) on static contact piece (211), two static contact pieces (211) are electric connection face (212) that inclines in opposite directions, movable contact piece (22) are including movable contact frame (221) and movable contact piece (222) that connect, movable contact piece (222) are located between two electric connection faces (212), the side that movable contact piece (222) are located between two electric connection faces (212) is touch face (2221), touch face (2221) is face, and touch face (2221) are located between two electric connection faces (222212); The movable contact frame (221) is provided with a pushing piece (3) along one axial side of the movable contact surface (2221), the other axial side of the movable contact frame along the contact surface (2221) is provided with a reset component (4), the pushing piece (3) is slidably connected in the shell (1), the sliding direction is towards or back to the switch component (2), one end of the pushing piece (3) back to the switch component (2) penetrates and stretches out of the shell (1), and the reset component (4) faces towards the pushing piece (3) and pushes the movable contact frame (221).
  2. 2. The pressure switch with high electrical connection stability according to claim 1, wherein the number of the moving contacts (222) is 2, and two opposite inclined stationary contacts (211) are respectively mounted on two sides of the two contacts.
  3. 3. The pressure switch with high electrical connection stability according to claim 2, wherein the movable contact rack (221) comprises a trigger arm (2211) and a connecting arm (2212), the trigger arm (2211) is arranged to protrude towards the pushing member (3), two connecting arms (2212) are fixed on one side of the trigger arm (2211) towards the movable contact rack (221), and two movable contacts (222) are respectively fixed on the two connecting arms (2212).
  4. 4. A pressure switch with high electrical connection stability according to claim 1, characterized in that the return assembly (4) comprises a return spring (41), one end of the return spring (41) is propped against the inner wall of the housing (1), and the other end of the return spring (41) is propped against the movable contact frame (221) and is pushed towards the pushing piece (3).
  5. 5. The pressure switch of claim 4, wherein the reset assembly (4) further comprises a limit protrusion (42) located in the reset spring (41), and the limit protrusion (42) is fixedly connected to the inner wall of the housing (1).
  6. 6. The pressure switch with high stability is electrically connected to claim 1, wherein the inner wall of the movable cavity (13) is located at one side of the movable contact frame (221) facing the pushing piece (3) and is provided with a first annular groove (14), a sealing gasket (5) is covered in the first annular groove (14), the movable cavity (13) is divided into a switch cavity (15) and a pushing cavity (16) by the arrangement of the sealing gasket (5), the inner wall of the movable cavity (13) is located at one side of the first annular groove (14) facing away from the pushing piece (3) and is provided with a second annular groove (17), a limiting ring (6) is covered in the second annular groove (17), the limiting ring (6) is made of a hard material, one side of the limiting ring (6) facing the pushing piece (3) abuts against the sealing gasket (5), a third annular groove (18) is arranged at one side of the inner wall of the movable cavity (13) facing away from the pushing piece (3), and the third annular groove (18) faces towards the surface of the limiting ring (6) and forms a clamping ring (181) facing away from the limiting ring (5) and abuts against the limiting ring (181).
  7. 7. The pressure switch with high electrical connection stability according to claim 6, wherein the inner peripheral side wall of the side of the limit ring (6) facing the sealing gasket (5) is provided with a first annular protrusion (61), the first annular protrusion (61) is propped against the side of the sealing gasket (5) facing away from the pushing piece (3), the sealing gasket (5) comprises a sealing end (51), and the circumferential side wall of the sealing end (51) is fixed with a limit end (52) facing the first annular protrusion (61).
  8. 8. The pressure switch with high stability for electric connection according to claim 6, wherein a fixed ring (7) located at one side of the limiting ring (6) opposite to the sealing pad (5) is arranged in the switch cavity (15), the fixed ring (7) is located at the periphery of the movable contact frame (221), a ring edge (71) is fixed at one side of the fixed ring (7) opposite to the sealing pad (5), a second ring protrusion (62) is arranged at the inner peripheral side wall of the limiting ring (6) opposite to the fixed ring (7), and the second ring protrusion (62) and the ring edge (71) are distributed in opposite directions.

Description

High-stability pressure switch for electric connection Technical Field The application relates to the technical field of pressure switches, in particular to a pressure switch with high electrical connection stability. Background The pressure switch is used as a key element in industrial automation control and is widely applied to hydraulic and pneumatic systems and various mechanical equipment. In the automobile field, in particular to a gearbox system, the action of a pressure switch is particularly critical, in the oil circuit system of the automobile gearbox, the change of oil pressure is critical to the working state of the gearbox, the efficiency and the service life of gear transmission in the gearbox can be influenced by the fact that the oil pressure is too high or too low, the pressure switch can monitor the change of the oil circuit pressure in real time and convert a pressure signal into an electric signal in time, and therefore the fact that the gearbox is always in the optimal working state for equipment is achieved. Monitoring and protecting the running state. In the prior art, in order to realize the conversion from a pressure signal to an electrical signal, the electrical connection is usually realized by adopting a manner that a moving contact and a fixed contact are abutted, specifically, common means include that the moving contact and the fixed contact are pressed by a spring to ensure the contact reliability, or the contact area is increased by designing a contact structure with a specific shape, and the means are widely adopted in practical application and aim to improve the performance and the stability of the pressure switch. However, these means in the prior art still have obvious defects, because the moving contact and the fixed contact form a plurality of protruding contacts on the surface in the production process, the actual contact form is gradually changed into point contact when the moving contact and the fixed contact are mutually abutted, so that the contact area is gradually reduced, particularly in the running process of an automobile gearbox, the problem of poor contact is more common in vibration or impact environment, the stable conversion of pressure signals to electric signals is influenced, the requirement of high-reliability application scenes is difficult to meet, and particularly in the high-speed running or extreme temperature condition, the problem is more prominent. Disclosure of Invention In order to improve the stability of connection between the moving contact and the fixed contact, the pressure switch with high electrical connection stability is provided. The above-mentioned application purpose of the application is realized through the following technical scheme: The utility model provides an electric connection high stability's pressure switch, includes the casing, be equipped with the movable chamber in the casing, install the switch module in the movable chamber, the switch module includes static contact and movable contact, the quantity of static contact is two, two static contact are located the same side and are equipped with the static contact of slope, two static contact fold in opposite directions and incline, be connected with the electric connection piece that runs through outside the casing on the static contact, two static contact face that inclines in opposite directions are the electric connection face, the movable contact includes movable contact frame and the movable contact that connects, the movable contact is located between two electric connection faces, the side that the movable contact is located between two electric connection faces is the touch surface, the touch surface is the round platform face, and the touch surface is located between two electric connection faces; The movable contact frame is provided with a pushing piece along one side of the axial direction of the movable contact surface, the other side of the movable contact frame along the axial direction of the contact surface is provided with a reset component, the pushing piece is slidably connected in the shell, the sliding direction is towards or back to the switch component, one end of the pushing piece back to the switch component penetrates out of the shell, and the reset component faces the pushing piece and pushes the movable contact frame. By adopting the technical scheme, in the oil circuit system of the automobile gearbox, when the pressure in the oil circuit rises, the pressure in the oil circuit can push the pushing piece to move towards the direction of the reset assembly, the pushing piece synchronously pushes the movable contact frame to prop against the direction of the reset assembly, the two static contact pieces are folded and inclined in opposite directions, the opposite inclined surfaces of the two static contact pieces are electric contact surfaces, the contact surface of the movable contact is a round table surface, the round table-shaped contact