Air switch
By adopting a combination of arc-shaped through holes and limiting parts in the air switch, the problem of easy disengagement of the connection shaft is solved, ensuring the safety and stability of the air switch, and realizing the timely opening function in the event of circuit failure.
Patent Information
- Application Number
- CN202421034005.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-13
AI Technical Summary
The connecting shaft of existing air switches is prone to fall off, resulting in abnormal opening, which may cause circuit power outages and electric shock accidents, posing safety hazards.
An air switch is designed, using a structure that combines arcuate through holes and limiting parts. The connecting shaft moves along the arcuate through holes. The limiting part covers the track, limits the axial movement, ensures that the connecting shaft is not easy to fall off, and is made of plastic. And integrated molding lever to improve structural strength and service life.
Effectively prevent the connection shaft from falling off, ensuring that the air switch can be opened in time when it is automatically opened or circuit failure, improving the safety of use and product life.
Smart Images
Figure CN222320156U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit protection, in particular to an air switch. Background Art
[0002] The air switch is opened by the motor driving the gear to rotate, and the gear drives the paddle to hit the connecting shaft on the free tripping mechanism to open the switch; due to the product life requirements and the large impact force of the paddle, the connecting shaft on the free tripping mechanism in the prior art is required to be an iron connecting shaft; according to the requirements of simple process procedures, the connecting shaft and the plastic parts on the free tripping mechanism are bonded with glue, which is the most efficient and economically feasible; when the product batch life test reaches the product limit, the connecting shaft occasionally falls off, causing abnormal opening of the product. From this, it can be deduced that the customers' actual long-term operation and high-frequency opening and closing products are likely to have abnormal opening, resulting in circuit power outages and failures, causing electric shock accidents and endangering life safety.
[0003] In the prior art, the connecting shaft and the plastic part are connected by riveting by increasing the diameter of the connecting shaft or reducing the diameter of the hole of the plastic part on the free release mechanism through interference fit. This process is complicated and increases production costs. It is necessary to purchase riveting equipment and make riveting jigs, which increases the steps of the production process. In addition, the connecting shaft still has the risk of falling off after riveting. Utility Model Content
[0004] In order to overcome the deficiencies of the prior art, the utility model provides an air switch, which can solve the problem that the connecting shaft of the prior air switch is easy to fall off and is unsafe to use.
[0005] The technical solution adopted by the utility model to solve the technical problem is: the utility model provides an air switch, including
[0006] A mounting plate, wherein the mounting plate is provided with a through hole, the through hole is arc-shaped, and the two ends of the through hole along the arc are a closing end and an opening end respectively;
[0007] A free tripping mechanism, wherein the free tripping mechanism is located below the mounting plate;
[0008] A connecting shaft, one end of which is inserted into the free release mechanism, and the other end of which extends out of the through hole, and the connecting shaft can move along the arc direction of the through hole;
[0009] A driving mechanism, wherein the driving mechanism is located above the mounting plate;
[0010] A lever, the lever is rotatably connected to the top of the mounting plate, the lever includes a first abutment portion, a second abutment portion and a limiting portion, the first abutment portion is located on a side of the connecting shaft close to the driving mechanism, the driving mechanism is used to drive the first abutment portion to rotate, the second abutment portion is located on a side of the connecting shaft close to the closing end, the limiting portion is located above the through hole, and the projection of the limiting portion can cover the trajectory of the movement of the connecting shaft, and the distance between the connecting shaft and the limiting portion is less than the length of the connecting shaft inserted into the free release mechanism.
[0011] As a further improvement of the above technical solution, the first abutting portion is in the shape of an elongated strip, one end of which is connected to the second abutting portion, and the other end of which faces the driving mechanism.
[0012] As a further improvement of the above technical solution, a side of the second abutting portion facing the connecting shaft is configured as an arc surface.
[0013] As a further improvement of the above technical solution, a reinforcing rib is provided at the connection between the first abutting portion and the second abutting portion.
[0014] As a further improvement of the above technical solution, the limiting portion is in the shape of an elongated strip, one end of which is connected to the second abutting portion, and the other end of which faces the opening end.
[0015] As a further improvement of the above technical solution, the driving mechanism includes a motor and a gear set, the gear set is connected to the main shaft of the motor, a shift block is provided on the gear, and the shift block is located on a side of the first abutment portion close to the closing end.
[0016] As a further improvement of the above technical solution, a connecting column is provided on the side of the free release mechanism facing the mounting plate, a connecting groove is provided on the connecting column, and one end of the connecting shaft is located in the connecting groove.
[0017] As a further improvement of the above technical solution, the lever further includes a connecting portion, the connecting portion is connected to the second abutting portion, the mounting plate is provided with a fixing column, and the connecting portion is rotatably connected to the fixing column.
[0018] As a further improvement of the above technical solution, the lever is made of plastic, and the first abutting portion, the second abutting portion and the limiting portion are integrally formed.
[0019] As a further improvement of the above technical solution, one end of the connecting shaft facing the limiting portion is chamfered.
[0020] The beneficial effects of the utility model are as follows: when the gate is automatically opened or when an external circuit fails, the driving mechanism drives the first abutment portion to rotate, thereby driving the entire lever to rotate, and then the second abutment portion to rotate. When the second abutment portion abuts against the connecting shaft, the second abutment portion drives the connecting shaft to move along the arc of the through hole toward the direction of the gate opening end, and the connecting shaft drives the free tripping mechanism to rotate, thereby completing the gate opening process. Since one end of the connecting shaft is inserted into the free tripping mechanism, the free tripping mechanism limits the movement of the connecting shaft in its radial direction, and the limiting portion is located above the through hole, and the projection of the limiting portion can cover the trajectory of the rotation of the connecting shaft, the distance between the connecting shaft and the limiting portion is less than the length of the connecting shaft inserted into the free tripping mechanism, and the limiting portion limits the movement of the connecting shaft in its axial direction. When the connecting shaft moves outward in the axial direction to the limit, one end of the connecting shaft abuts against the limiting portion, and the other end is still inserted into the free tripping mechanism, so that the connecting shaft is not easy to fall off from the free tripping mechanism. When the gate is automatically opened or the circuit fails, the connecting shaft can drive the free tripping mechanism to open the gate in time, and it is safe to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0022] Figure 1 It is a structural schematic diagram of an air switch provided by a preferred embodiment of the utility model;
[0023] Figure 2 yes Figure 1 The schematic diagram of the structure of the air switch without the lever;
[0024] Figure 3 yes Figure 2 The schematic diagram of the structure of the air switch after further removing the mounting plate;
[0025] Figure 4 yes Figure 1 A schematic diagram of the structure of the lever of the air switch;
[0026] Figure 5 yes Figure 1 Schematic diagram of the structure of the air switch from another angle.
[0027] Reference numerals: 1, mounting plate, 2, free release mechanism, 3, connecting shaft, 4, driving mechanism, 5, lever;
[0028] 11. through hole, 12. fixing column, 21. connecting column, 41. motor, 42. gear set, 51. first abutting portion, 52. second abutting portion, 53. limiting portion, 54. connecting portion;
[0029] 111, closing end, 112, opening end, 211, connecting groove, 421, shift block, 511, reinforcing rib. DETAILED DESCRIPTION
[0030] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the utility model, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that according to the specific implementation situation, a better connection structure can be formed by adding or reducing connection accessories. For example, fixed connection / fixed installation can be selected according to the needs of screw connection, bolt connection, pin connection, key connection, bonding, mortise and tenon connection, welding, riveting and other methods. For example, detachable connection can be selected according to the needs of screw connection, bolt connection, threaded connection, snap connection, mortise and tenon connection, Velcro connection and other methods. The various technical features in the creation of the utility model can be combined interactively without conflicting with each other.
[0031] See also Figure 1-4The preferred embodiment of the utility model provides an air switch, including a mounting plate 1, a free tripping mechanism 2, a connecting shaft 3, a driving mechanism 4 and a lever 5. The mounting plate 1 is provided with a through hole 11, and the through hole 11 is arc-shaped. The two ends of the through hole 11 along its arc direction are respectively a closing end 111 and an opening end 112; the free tripping mechanism 2 is located below the mounting plate 1; one end of the connecting shaft 3 is inserted into the free tripping mechanism 2, and the other end extends out of the through hole 11, and the connecting shaft 3 can move along the arc direction of the through hole 11; the driving mechanism 4 is located above the mounting plate 1; the lever 5 is rotatably connected to the top of the mounting plate 1, and the lever 5 comprises a first abutting portion 51, a second abutting portion 52 and a limiting portion 53, the first abutting portion 51 is located at a side of the connecting shaft 3 close to the driving mechanism 4, the driving mechanism 4 is used to drive the first abutting portion 51 to rotate, the second abutting portion 52 is located at a side of the connecting shaft 3 close to the closing end 111, specifically, the second abutting portion is located at the lower right side of the closing end 111 and the upper left side of the opening end 112, the limiting portion 53 is located above the through hole 11, and the projection of the limiting portion 53 can cover the rotation trajectory of the connecting shaft 3, and the distance between the connecting shaft 3 and the limiting portion 53 is less than the length of the connecting shaft 3 inserted into the free tripping mechanism 2. When the switch is automatically opened or when an external circuit fails, the driving mechanism 4 drives the first abutment portion 51 to rotate, thereby driving the entire lever 5 to rotate, and then driving the second abutment portion 52 to rotate. When the second abutment portion 52 abuts against the connecting shaft 3, the second abutment portion 52 drives the connecting shaft 3 along the arc-shaped direction of the through hole 11 and moves toward the opening end 112. The connecting shaft 3 then drives the free tripping mechanism 2 to rotate, thereby completing the opening process. Since one end of the connecting shaft 3 is inserted into the free release mechanism 2, the free release mechanism 2 limits the movement of the connecting shaft 3 in its radial direction, and the limiting portion 53 is located above the through hole 11, and the projection of the limiting portion 53 can cover the rotation trajectory of the connecting shaft 3. The distance between the connecting shaft 3 and the limiting portion 53 is less than the length of the connecting shaft 3 inserted in the free release mechanism 2. The limiting portion 53 limits the movement of the connecting shaft 3 in its axial direction. When the connecting shaft 3 moves axially outward to the limit, one end of the connecting shaft 3 abuts against the limiting portion 53, and the other end is still inserted in the free release mechanism 2, so that the connecting shaft 3 is not easy to fall off from the free release mechanism 2. When the automatic opening or circuit failure occurs, the connecting shaft 3 can drive the free release mechanism 2 to open in time, which is safe to use.
[0032] The first abutment portion 51 is in the shape of an elongated strip, one end of which is connected to the second abutment portion 52 and the other end faces the driving mechanism 4. The elongated first abutment portion 51 is convenient for the driving mechanism 4 to push, thereby making the opening speed faster, the air switch is more sensitive to reaction, and further ensuring the safety of use.
[0033] The second abutting portion 52 is configured as an arc surface on one side facing the connecting shaft 3, so that the second abutting portion 52 fits more closely with the outer peripheral surface of the connecting shaft 3, and the abutment between the second abutting portion 52 and the connecting shaft 3 is more stable, and the two are not easy to slip off, thereby ensuring smooth opening of the gate.
[0034] A reinforcing rib 511 is disposed at the connection between the first abutting portion 51 and the second abutting portion 52 , so as to enhance the structural strength of the first abutting portion 51 and the second abutting portion 52 , making the two more durable.
[0035] The limiting portion 53 is in the shape of an elongated strip, one end of which is connected to the second abutting portion 52 and the other end of which faces the opening end 112 . The elongated limiting portion 53 is easy to manufacture and is conducive to improving production efficiency.
[0036] See also Figure 5 The driving mechanism 4 includes a motor 41 and a gear set 42. The gear set 42 is connected to the main shaft of the motor 41. A shift block 421 is provided on the gear set 42. The shift block 421 is located on the side of the first abutting portion 51 close to the closing end 111. When the gate is opened, the motor 41 drives the gear set 42 to rotate, thereby driving the shift block 421 to rotate. After the shift block 421 abuts against the first abutting portion 51, it drives the first abutting portion 51 to rotate toward the direction close to the opening end 112.
[0037] See also Figure 3 A connecting column 21 is provided on the side of the free release mechanism 2 facing the mounting plate 1, and a connecting groove 211 is provided on the connecting column 21. One end of the connecting shaft 3 is located in the connecting groove 211. The connecting column 21 is a cylindrical shape with one end open. The connecting column 21 surrounds one end of the connecting shaft 3 to prevent the connecting column 21 from moving in its radial direction.
[0038] See also Figure 1 and Figure 2 The lever 5 also includes a connecting portion 54, which is connected to the second abutting portion 52. The mounting plate 1 is provided with a fixing column 12, and the connecting portion 54 is rotatably connected to the fixing column 12. When the gate is opened, the lever block 421 drives the first abutting portion 51 to rotate, thereby driving the connecting portion 54 to rotate around the fixing column 12.
[0039] The lever 5 is made of plastic, and the first abutting portion 51, the second abutting portion 52 and the limiting portion 53 are integrally formed. The integral forming process allows the three to be firmly connected and increases the service life. The plastic material facilitates the processing of the integral forming process.
[0040] One end of the connecting shaft 3 facing the limiting portion 53 is chamfered, and this end of the connecting shaft 3 is used to abut against the second abutting portion 52. The chamfered setting makes the surface of the end smooth, preventing the end from scratching the second abutting portion 52 and increasing the service life of the second abutting portion 52.
[0041] Working principle: When opening the switch, the motor 41 drives the gear set 42 to rotate, the shift block 421 rotates with the gear set 42, and then the shift block 421 shifts the first abutment portion 51, and then the second abutment portion 52 shifts the connecting shaft 3, and the connecting shaft 3 moves downward in a circular arc, driving the free tripping mechanism 2 to move downward in a circular arc; when closing the switch, the free tripping mechanism 2 moves upward in a circular arc, thereby driving the connecting shaft 3 to move upward in a circular arc; the opening and closing process of the air switch is realized through the circular arc reciprocating motion of the connecting shaft 3.
[0042] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.
Claims
1. An air switch, characterized in that: include A mounting plate, wherein the mounting plate is provided with a through hole, the through hole is arc-shaped, and the two ends of the through hole along the arc are a closing end and an opening end respectively; A free tripping mechanism, wherein the free tripping mechanism is located below the mounting plate; A connecting shaft, one end of which is inserted into the free release mechanism, and the other end of which extends out of the through hole, and the connecting shaft can move along the arc direction of the through hole; A driving mechanism, wherein the driving mechanism is located above the mounting plate; A lever, the lever is rotatably connected to the top of the mounting plate, the lever includes a first abutment portion, a second abutment portion and a limiting portion, the first abutment portion is located on a side of the connecting shaft close to the driving mechanism, the driving mechanism is used to drive the first abutment portion to rotate, the second abutment portion is located on a side of the connecting shaft close to the closing end, the limiting portion is located above the through hole, and the projection of the limiting portion can cover the trajectory of the movement of the connecting shaft, and the distance between the connecting shaft and the limiting portion is less than the length of the connecting shaft inserted into the free release mechanism.
2. The air switch according to claim 1, characterized in that: The first abutting portion is in an elongated strip shape, one end of which is connected to the second abutting portion, and the other end of which faces the driving mechanism.
3. The air switch according to claim 1, characterized in that: A side of the second abutting portion facing the connecting shaft is configured as an arc surface.
4. The air switch according to claim 2, characterized in that: A reinforcing rib is provided at a connection between the first abutting portion and the second abutting portion.
5. The air switch according to claim 1, characterized in that: The limiting portion is in the shape of an elongated strip, one end of which is connected to the second abutting portion, and the other end of which faces the opening end.
6. The air switch according to any one of claims 1 to 5, characterized in that: The driving mechanism comprises a motor and a gear set, wherein the gear set is connected to the main shaft of the motor, and a shift block is arranged on the gear, and the shift block is located on a side of the first abutting portion close to the closing end.
7. The air switch according to claim 1, characterized in that: A connecting column is arranged on one side of the free release mechanism facing the mounting plate, a connecting groove is arranged on the connecting column, and one end of the connecting shaft is located in the connecting groove.
8. The air switch according to claim 1, characterized in that: The shifting rod further comprises a connecting portion, the connecting portion is connected to the second abutting portion, the mounting plate is provided with a fixing column, and the connecting portion is rotatably connected to the fixing column.
9. The air switch according to claim 1, characterized in that: The lever is made of plastic, and the first abutting portion, the second abutting portion and the limiting portion are integrally formed.
10. The air switch according to claim 1, characterized in that: One end of the connecting shaft facing the limiting portion is rounded.