High temperature resistant ceramic contact switch

Abstract

The utility model discloses a kind of high-temperature-resistant ceramic contact switches.The utility model, including first shell: the side of the first shell is provided with first ceramic inner container, the side of the first ceramic inner container is provided with second ceramic inner container, the side of the second ceramic inner container is provided with second shell, the middle position of the top of the first ceramic inner container and second ceramic inner container is provided with extruded spring leaf, the top and bottom of the other end of the first ceramic inner container and second ceramic inner container are all provided with protective piece, the middle position of the bottom of the first ceramic inner container and second ceramic inner container is provided with sealing element.The utility model is provided with first ceramic inner container and second ceramic inner container in the inside of first shell and second shell, the inside structure of contact switch is protected by first ceramic inner container and second ceramic inner container, so that contact switch has high-temperature-resistant effect, solve the problem that contact switch is not high-temperature-resistant, avoid the short circuit or contact bad condition of contact switch.

Description

Technical Field

[0001] This utility model relates to the field of contact switch technology, specifically a high-temperature resistant ceramic contact switch. Background Technology

[0002] A contact switch is an electrical component that uses metal contacts to open or close circuits or switch current paths. Its core components include a push button, module, intermediate base, and step-down box. It is widely used in electrical automatic control systems as a low-voltage electrical control contactor, relay, and other devices. The switch remains in a free state under normal conditions and changes state under external force, then is reset by a spring. Compared to contactless switches, contact switches have disadvantages such as high losses and high electrical spikes, while contactless switches use thyristor technology to achieve spark-free, fast response.

[0003] When in use, the contact switches on power tools will generate heat. Since most of the contact switches on existing power tools have plastic housings, the plastic housings are prone to deformation due to heat, which can cause misalignment of the metal parts inside the contact switch, easily leading to short circuits or poor contact. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature resistant ceramic contact switch to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature resistant ceramic contact switch, comprising a first housing; a first ceramic inner liner is disposed on one side of the first housing, a second ceramic inner liner is disposed on one side of the first ceramic inner liner, a second housing is disposed on one side of the second ceramic inner liner, a compression spring is disposed at the middle position of the top of the first ceramic inner liner and the second ceramic inner liner, protective members are disposed at the top and bottom of the other end of the first ceramic inner liner and the second ceramic inner liner, a sealing member is disposed at the middle position of the bottom of the first ceramic inner liner and the second ceramic inner liner, and a buffer strip is disposed on the outer surface of the first ceramic inner liner and the second ceramic inner liner.

[0006] By adopting the above technical solution, a first ceramic inner liner and a second ceramic inner liner are provided on the inner surfaces of the first shell and the second shell. Since both the first ceramic inner liner and the second ceramic inner liner are made of ceramic material, and since ceramic has excellent insulation, high temperature resistance and high hardness, the problem of the contact switch not being resistant to high temperature is solved, and the short circuit or poor contact of the contact switch is avoided.

[0007] Preferably, an operating button is movably provided at one end of the top of the first ceramic inner liner and the second ceramic inner liner, and normally closed terminals and normally open terminals are respectively provided at the top and bottom of the other end of the first ceramic inner liner and the second ceramic inner liner. A support plate is provided at the bottom of the operating button, and a movable spring is provided at the middle position of the other end of the support plate. A contact is provided at the other end of the movable spring. A common terminal is provided at the middle position of the bottom of the first ceramic inner liner and the second ceramic inner liner.

[0008] By adopting the above technical solution, the user presses the squeezing spring to squeeze the operating button on the first and second ceramic inner liner. The operating button drives the tray to move, which in turn moves the moving spring, thereby changing the contact position so that the contact can contact the normally open terminal. After the user releases the squeezing spring, since one end of the tray is fixedly connected to the common terminal, the squeezing spring will rebound, allowing the moving spring to return to its original position and contact the normally closed terminal.

[0009] Preferably, grooves are provided on one side of the first shell and the other side of the second shell, the size of the groove on the first shell is adapted to the size of the first ceramic liner, and the size of the groove on the second shell is adapted to the size of the second ceramic liner.

[0010] By adopting the above technical solution, the first shell and the second shell can be fitted onto the outer surfaces of the first ceramic inner liner and the second ceramic inner liner, thereby protecting the first ceramic inner liner and the second ceramic inner liner.

[0011] Preferably, the buffer strip is made of rubber and abuts against the first shell and the second shell. The first shell and the second shell are engaged with the first ceramic inner liner and the second ceramic inner liner through the buffer strip.

[0012] By adopting the above technical solution, since the buffer strip is made of rubber and is soft, it protects the first and second ceramic inner liner and prevents them from breaking due to vibration when the power tool is working.

[0013] Preferably, the top and bottom of the other end of the first ceramic inner liner and the second ceramic inner liner are provided with slots. The first ceramic inner liner and the second ceramic inner liner are engaged with the protective component through the slots. There are two protective components, and the two protective components are respectively sleeved with the normally closed terminal and the normally open terminal.

[0014] By adopting the above technical solution, the protective component can be stably and securely installed on the first ceramic inner liner and the second ceramic inner liner through the slot, and the normally closed terminal and normally open terminal can be protected by the protective component.

[0015] Preferably, a connecting groove is provided at the middle position of the bottom of the first ceramic inner liner and the second ceramic inner liner, and the first ceramic inner liner and the second ceramic inner liner are engaged with the sealing element through the connecting groove, and the sealing element is sleeved with the common terminal.

[0016] By adopting the above technical solution, the sealing element is stably and securely installed on the first ceramic inner liner and the second ceramic inner liner through the connecting groove, while the sealing element can protect the common terminal.

[0017] Preferably, the tray is Z-shaped, the common terminal is W-shaped, the tray abuts against the common terminal, and a rectangular opening is provided at the top of one end of the common terminal. The size of the rectangular opening on the common terminal is slightly larger than the size of the moving spring.

[0018] Preferably, both the protective component and the sealing component are made of ceramic.

[0019] Compared with the prior art, the beneficial effects of this utility model are: the high-temperature resistant ceramic contact switch has a first ceramic inner liner and a second ceramic inner liner inside the first housing and the second housing. The first ceramic inner liner and the second ceramic inner liner protect the internal structure of the contact switch, so that the contact switch has a high temperature resistance effect, solves the problem of the contact switch not being resistant to high temperature, and avoids the contact switch from short circuit or poor contact. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0021] Figure 2 This is a front view of the structure of this utility model;

[0022] Figure 3 This is a front view sectional view of the present invention.

[0023] In the diagram: 1. First housing; 2. First ceramic inner liner; 3. Second ceramic inner liner; 4. Second housing; 5. Compression spring; 6. Operating button; 7. Normally closed terminal; 8. Normally open terminal; 9. Support plate; 10. Moving spring; 11. Contact; 12. Common terminal; 13. Protective component; 14. Sealing component; 15. Buffer strip. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-3This utility model provides an embodiment of a high-temperature resistant ceramic contact switch, comprising a first housing 1; a first ceramic inner liner 2 is disposed on one side of the first housing 1, a second ceramic inner liner 3 is disposed on one side of the first ceramic inner liner 2, and a second housing 4 is disposed on one side of the second ceramic inner liner 3; a compression spring 5 is disposed at the middle position of the top of the first ceramic inner liner 2 and the second ceramic inner liner 3; protective members 13 are disposed at the top and bottom of the other end of the first ceramic inner liner 2 and the second ceramic inner liner 3; a sealing member 14 is disposed at the middle position of the bottom of the first ceramic inner liner 2 and the second ceramic inner liner 3; a buffer strip 15 is disposed on the outer surface of the first ceramic inner liner 2 and the second ceramic inner liner 3; and the first ceramic inner liner 2 and the second ceramic inner liner 3 are disposed on the inner surface of the first housing 1 and the second housing 4. Since the first ceramic inner liner 2 and the second ceramic inner liner 3 are both composed of ceramic materials, and ceramics have excellent insulation, high temperature resistance, and high hardness, the problem of the contact switch not being resistant to high temperatures is solved, and the short circuit or poor contact of the contact switch is avoided.

[0026] In this embodiment, an operating button 6 is movably provided at one end of the top of the first ceramic inner liner 2 and the second ceramic inner liner 3. A normally closed terminal 7 and a normally open terminal 8 are respectively provided at the top and bottom of the other end of the first ceramic inner liner 2 and the second ceramic inner liner 3. A support plate 9 is provided at the bottom of the operating button 6. A movable spring 10 is provided at the middle position of the other end of the support plate 9. A contact 11 is provided at the other end of the movable spring 10. A common terminal 12 is provided at the middle position of the bottom of the first ceramic inner liner 2 and the second ceramic inner liner 3. The user presses the squeezing spring 5 to squeeze the operating button 6 to move on the first ceramic inner liner 2 and the second ceramic inner liner 3. The operating button 6 drives the support plate 9 to move, so that the movable spring 10 can move accordingly, thereby changing the position of the contact 11, so that the contact 11 can contact the normally open terminal 8. After the user releases the squeezing spring 5, since one end of the support plate 9 is fixedly connected to the common terminal 12, the squeezing spring 5 will spring back, so that the movable spring 10 can return to its original position and contact the normally closed terminal 7.

[0027] In this embodiment, grooves are provided on one side of the first shell 1 and the other side of the second shell 4. The size of the groove on the first shell 1 is adapted to the size of the first ceramic inner liner 2, and the size of the groove on the second shell 4 is adapted to the size of the second ceramic inner liner 3, so that the first shell 1 and the second shell 4 can be fitted onto the outer surface of the first ceramic inner liner 2 and the second ceramic inner liner 3, thereby protecting the first ceramic inner liner 2 and the second ceramic inner liner 3.

[0028] In this embodiment, the buffer strip 15 is made of rubber. The buffer strip 15 abuts against the first housing 1 and the second housing 4. The first housing 1 and the second housing 4 are connected to the first ceramic inner liner 2 and the second ceramic inner liner 3 through the buffer strip 15. Since the buffer strip 15 is made of rubber, the buffer strip 15 is soft and protects the first ceramic inner liner 2 and the second ceramic inner liner 3, preventing the first ceramic inner liner 2 and the second ceramic inner liner 3 from breaking due to vibration when the power tool is working.

[0029] In this embodiment, the top and bottom of the other end of the first ceramic inner liner 2 and the second ceramic inner liner 3 are provided with slots. The first ceramic inner liner 2 and the second ceramic inner liner 3 are engaged with the protective member 13 through the slots. There are two protective members 13, and the two protective members 13 are respectively sleeved with the normally closed terminal 7 and the normally open terminal 8. The protective members 13 can be stably and firmly installed on the first ceramic inner liner 2 and the second ceramic inner liner 3 through the slots, and the normally closed terminal 7 and the normally open terminal 8 can be protected by the protective members 13.

[0030] In this embodiment, a connecting groove is provided at the middle position of the bottom of the first ceramic inner liner 2 and the second ceramic inner liner 3. The first ceramic inner liner 2 and the second ceramic inner liner 3 are engaged with the sealing member 14 through the connecting groove. The sealing member 14 is sleeved with the common terminal 12. The sealing member 14 is stably and firmly installed on the first ceramic inner liner 2 and the second ceramic inner liner 3 through the connecting groove. At the same time, the sealing member 14 can protect the common terminal 12.

[0031] In this embodiment, the support plate 9 is Z-shaped, the common terminal 12 is W-shaped, the support plate 9 abuts against the common terminal 12, and a rectangular opening is provided at the top of one end of the common terminal 12. The size of the rectangular opening on the common terminal 12 is slightly larger than the size of the moving spring 10. The protective member 13 and the sealing member 14 are both made of ceramic.

[0032] Working principle: The user presses the squeezing spring 5, which in turn squeezes the operating button 6 onto the first ceramic inner liner 2 and the second ceramic inner liner 3. The operating button 6 drives the support plate 9 to move, causing the moving spring 10 to move accordingly, thereby changing the position of the contact 11 so that the contact 11 can contact the normally open terminal 8. After the user releases the squeezing spring 5, since one end of the support plate 9 is fixedly connected to the common terminal 12, the squeezing spring 5 will spring back, allowing the moving spring 10 to return to its original position and contact the normally closed terminal 7. When the contact switch is activated, it generates heat due to conductivity. Since both the first ceramic inner liner 2 and the second ceramic inner liner 3 are made of ceramic material, the excellent insulation, high temperature resistance, and high hardness of ceramic solve the problem of the contact switch not being able to withstand high temperatures, thus avoiding short circuits or poor contact in the contact switch.

[0033] For those skilled in the art, this invention is not limited to the details of the exemplary embodiments described above, and can be implemented in other specific forms without departing from the spirit or scope of this invention. Therefore, the embodiments of this invention are exemplary and not restrictive. The scope of this invention is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-temperature resistant ceramic contact switch, comprising a first housing (1), characterized in that: A first ceramic inner liner (2) is provided on one side of the first shell (1), a second ceramic inner liner (3) is provided on one side of the first ceramic inner liner (2), a second shell (4) is provided on one side of the second ceramic inner liner (3), a compression spring (5) is provided at the middle position of the top of the first ceramic inner liner (2) and the second ceramic inner liner (3), protective parts (13) are provided at the top and bottom of the other end of the first ceramic inner liner (2) and the second ceramic inner liner (3), a sealing part (14) is provided at the middle position of the bottom of the first ceramic inner liner (2) and the second ceramic inner liner (3), and a buffer strip (15) is provided on the outer surface of the first ceramic inner liner (2) and the second ceramic inner liner (3).

2. The high-temperature resistant ceramic contact switch according to claim 1, characterized in that: An operating button (6) is movably provided at one end of the top of the first ceramic inner liner (2) and the second ceramic inner liner (3). A normally closed terminal (7) and a normally open terminal (8) are respectively provided at the top and bottom of the other end of the first ceramic inner liner (2) and the second ceramic inner liner (3). A support plate (9) is provided at the bottom of the operating button (6). A moving spring (10) is provided at the middle position of the other end of the support plate (9). A contact point (11) is provided at the other end of the moving spring (10). A common terminal (12) is provided at the middle position of the bottom of the first ceramic inner liner (2) and the second ceramic inner liner (3).

3. The high-temperature resistant ceramic contact switch according to claim 1, characterized in that: The first shell (1) has a groove on one side and the second shell (4) has a groove on the other side. The size of the groove on the first shell (1) is adapted to the size of the first ceramic inner liner (2), and the size of the groove on the second shell (4) is adapted to the size of the second ceramic inner liner (3).

4. The high-temperature resistant ceramic contact switch according to claim 1, characterized in that: The buffer strip (15) is made of rubber and abuts against the first shell (1) and the second shell (4). The first shell (1) and the second shell (4) are connected to the first ceramic inner liner (2) and the second ceramic inner liner (3) through the buffer strip (15).

5. A high-temperature resistant ceramic contact switch according to claim 2, characterized in that: The first ceramic inner liner (2) and the second ceramic inner liner (3) are provided with slots at the top and bottom of the other end. The first ceramic inner liner (2) and the second ceramic inner liner (3) are connected to the protective component (13) through the slots. There are two protective components (13), and the two protective components (13) are respectively connected to the normally closed terminal (7) and the normally open terminal (8).

6. A high-temperature resistant ceramic contact switch according to claim 2, characterized in that: A connecting groove is provided at the middle position of the bottom of the first ceramic inner liner (2) and the second ceramic inner liner (3). The first ceramic inner liner (2) and the second ceramic inner liner (3) are connected to the sealing member (14) through the connecting groove. The sealing member (14) is sleeved with the common terminal (12).

7. A high-temperature resistant ceramic contact switch according to claim 2, characterized in that: The tray (9) is Z-shaped, the common terminal (12) is W-shaped, the tray (9) abuts against the common terminal (12), and a rectangular opening is provided at the top of one end of the common terminal (12). The size of the rectangular opening on the common terminal (12) is slightly larger than the size of the moving spring (10).

8. A high-temperature resistant ceramic contact switch according to claim 1, characterized in that: Both the protective component (13) and the sealing component (14) are made of ceramic.

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