Contact structure of toggle switch

Abstract

The utility model discloses a contact structure of a toggle switch, which comprises a shell, a pair of static contacts arranged on the inner bottom wall of the shell, a contact piece capable of doing seesaw motion arranged at the inner bottom of the shell, movable contacts arranged at the bottoms of two ends of the contact piece, and compensation springs arranged between the movable contacts and the contact piece. The contact piece does the seesaw motion to enable the movable contact to be in contact with the static contact; an operation handle capable of swinging left and right penetrates through the top end of the shell, an action wheel is arranged at the bottom end of the operation handle, an action spring is assembled at the bottom in the operation handle and pushes the action wheel to make elastic contact with the contact piece, and the operation handle swings to drive the action wheel to roll along the contact piece and enable the contact piece to make warping movement. The circuit breaker has a contact compensation effect, and can effectively avoid the phenomenon of circuit failure caused by poor contact due to frequent touch and abrasion of contacts.

Description

TECHNICAL FIELD

[0001] The utility model relates to button switch technical field, concretely is a contact structure of button switch. BACKGROUND

[0002] As a common manual control electrical element, button switch is widely used in various electrical equipment, electronic instrument and industrial control system, and is used for realizing the on-off control of circuit, and the connection state of circuit is changed by manually operating button and driving the internal contact to act.

[0003] As the core component of button switch, the rationality of the structure design of contact directly influences the electrical performance, service life and reliability of switch. The contact of the existing button switch usually adopts the structure mode of fixedly connecting, however, in the long-term use process, the surface of contact is abraded when the circuit is turned on and turned off after a certain number of operations, which leads to the reduction of contact area, the uneven distribution of contact pressure, the gap between contacts after contact, the unstable circuit contact phenomenon, the circuit failure, and the great influence on the normal operation of equipment. Therefore, the contact structure of button switch is provided. UTILITARY MODEL

[0004] The utility model discloses a contact structure of button switch, has contact contact compensation effect, can effectively avoid the phenomenon that the contact is abraded and causes the circuit failure of contact.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a contact structure of button switch, including the shell, a pair of static contacts is arranged on the inside bottom wall of the shell, the inside bottom of shell is provided with the contact piece that can make the hinged plate movement, the bottom of both ends of contact piece is provided with the dynamic contact, and the compensation spring is arranged between the dynamic contact and contact piece, and the hinged plate movement of contact piece can make the dynamic contact and static contact contact.

[0006] Preferably, the upper surface of both ends of the contact piece is provided with a shell sleeve, the compensation spring penetrates the end of the contact piece and is embedded in the shell sleeve, and the limiting protruding column that inserts into the compensation spring is arranged on the inner top wall of the shell sleeve.

[0007] Preferably, the both ends of the contact piece are curved upwards, the dynamic contact is provided with a guide strip, and the guide strip movably penetrates the contact piece.

[0008] Preferably, a support is provided on the bottom wall of the housing, the support is located in the center between a pair of stationary contacts, the contact piece is rotatably mounted on the support in the center, and the stationary contacts and the support are connected to terminals extending out of the housing, the terminals, contact pieces, support, stationary contacts, moving contacts and conductors are all made of conductive material.

[0009] Preferably, the top of the outer shell is threadedly connected to a ring seat, the operating handle is inserted into the ring seat, and a ball is provided at the position of the operating handle inside the ring seat, the ball being fitted into the inner wall of the ring seat.

[0010] Preferably, the two ends of the actuating wheel are provided with protruding ridges, which are located on both sides of the contact plate. The bottom of the operating handle is provided with an actuating cavity, and a pair of baffles are provided in the actuating cavity. The actuating spring is located between the pair of baffles. A pressure column is vertically mounted on the top of the actuating wheel, and the pressure column extends into the actuating cavity and connects with the baffle located below.

[0011] Preferably, the operating handle has a screw threaded through it, the screw can be unscrewed from the top of the operating handle, and the bottom of the screw extends into the actuation cavity.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention utilizes a compensating spring. When the manual operating handle is swung, causing the action wheel to roll along the contact plate and the contact plate to perform a rocker motion to change the circuit connection state, one end of the contact plate is pressed down. The compensating spring then elastically pushes the moving contact to press against the stationary contact. Compared to the traditional method where the moving contact is directly fixed to the contact plate, this structure, which uses a compensating spring to push the moving contact to press against the contact plate, provides a contact compensation effect between the moving and stationary contacts. This effectively avoids the phenomenon of poor contact and circuit failure caused by frequent contact and wear between the stationary and moving contacts.

[0014] This invention utilizes a screw to compress the spring, compressing its assembly space and compressing the spring to compensate for the downward pressure on the actuating wheel. This ensures that when the control handle moves the actuating wheel, the contact piece can perform a rocker motion. Furthermore, it enhances the downward pressure during the rocker motion, further ensuring effective contact between the stationary and moving contacts and improving the reliability of the toggle switch.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the outer shell of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the moving contact and the end of the contact piece of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the ring base and operating handle of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the action wheel of this utility model.

[0021] In the diagram: 1. Outer shell; 2. Ring seat; 3. Operating handle; 4. Terminal; 5. Contact piece; 6. Support; 7. Actuating wheel; 8. Stationary contact; 9. Moving contact; 10. Shell; 11. Compensating spring; 12. Guide bar; 13. Limiting protrusion; 14. Ball; 15. Actuating cavity; 16. Baffle; 17. Actuating spring; 18. Pressure post; 19. Screw; 20. Raised ridge. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0023] Example

[0024] Please see Figures 1 to 5The present invention preferably provides the following technical solution: a contact structure for a toggle switch, comprising a housing 1, a pair of stationary contacts 8 disposed on the inner bottom wall of the housing 1, and a contact piece 5 capable of rocker motion disposed at the bottom of the inner wall of the housing 1. Specifically, a support 6 is disposed on the inner bottom wall of the housing 1, the support 6 being centrally located between the pair of stationary contacts 8, and the contact piece 5 being rotatably mounted on the support 6 at the center, thereby forming a rocker structure between the contact piece 5 and the support 6, allowing the contact piece 5 to rocker. Moving contacts 9 are disposed at the bottom of both ends of the contact piece 5, and the rocker motion of the contact piece 5 allows the moving contacts 9 to contact the stationary contacts 8. A movable contact 9 is inserted through the top of the housing 1, which can be rotated left and right. The operating handle 3 is oscillating, with an actuating wheel 7 at its bottom. An actuating spring 17 is installed inside the bottom of the operating handle 3. The actuating spring 17 pushes the actuating wheel 7 to make elastic contact with the contact piece 5. When the operating handle 3 oscillates, it causes the actuating wheel 7 to roll along the contact piece 5 and makes the contact piece 5 rocker. Through this structure, the actuating spring 17 inside the operating handle 3 pushes the actuating wheel 7 to elastically abut against the contact piece 5. By manually controlling the operating handle 3 to oscillate, the actuating wheel 7 rolls along the contact piece 5 and makes the contact piece 5 rocker. The moving contact 9 at the pressing end of the contact piece 5 contacts the corresponding stationary contact 8, thereby changing the connection state of the circuit.

[0025] In a preferred embodiment of this invention, a compensating spring 11 is provided between the moving contact 9 and the contact piece 5. A housing 10 is provided on the upper surface of both ends of the contact piece 5. The compensating spring 11 passes through the end of the contact piece 5 and is embedded in the housing 10. Since the compensating spring 11 is provided between the moving contact 9 and the contact piece 5, when the end of the contact piece 5 is pressed down, the compensating spring 11 can elastically push the moving contact 9 to squeeze the stationary contact 8, which has the contact compensation effect between the moving contact 9 and the stationary contact 8. This can effectively avoid the phenomenon of poor contact and circuit failure caused by frequent contact and wear between the stationary contact 8 and the moving contact 9.

[0026] In this embodiment, a limiting protrusion 13 is provided on the inner top wall of the housing 10, which is inserted into the compensation spring 11 to prevent the compensation spring 11 from disengaging from the housing 10. The two ends of the contact piece 5 are bent upward. After one end of the contact piece 5 is pressed down, the moving contact 9 can have more contact area with the stationary contact 8, improving the conductivity. A guide strip 12 is provided on the moving contact 9, which moves through the contact piece 5 to guide the moving contact 9. The stationary contact 8 and the support 6 are connected to a terminal 4 that extends out of the housing 1 for connecting the circuit. The terminal 4, contact piece 5, support 6, stationary contact 8, moving contact 9 and guide strip 12 are all made of conductive material. The guide strip 12 can be used to connect the circuit between the moving contact 9 and the contact piece 5.

[0027] Furthermore, in this embodiment, a ring seat 2 is threaded to the top of the outer shell 1, and an operating handle 3 is inserted into the ring seat 2. A ball 14 is provided at the position of the operating handle 3 inside the ring seat 2, and the ball 14 is fitted into the inner wall of the ring seat 2. The two ends of the actuating wheel 7 are provided with protruding ribs 20, which are located on both sides of the contact piece 5 and are used to guide and limit the rolling of the actuating wheel 7 along the contact piece 5. The actuating wheel 7 is made of rubber, and the actuating spring 17 pushes the actuating wheel 7 to press against the contact piece 5, so that the contact point between the actuating wheel 7 and the contact piece 5 is a plane, which is beneficial for maintaining the potential switching.

[0028] In a further embodiment, an actuation cavity 15 is provided at the bottom of the operating handle 3. A pair of baffles 16 are provided in the actuation cavity 15, and an actuation spring 17 is located between the pair of baffles 16. A pressure column 18 is vertically mounted on the top of the actuation wheel 7. The pressure column 18 extends into the actuation cavity 15 and connects with the baffles 16 located below. A screw 19 is threaded through the operating handle 3. The screw 19 can be unscrewed from the top of the operating handle 3. The bottom end of the screw 19 extends into the actuation cavity 15. Tightening the screw 19 pushes the actuation spring 17 down, which can compress the assembly space of the actuation spring 17, causing the actuation spring 17 to compress and contract, thereby compensating for the downward pressure on the actuation wheel 7. This ensures that when the operating handle 3 drives the actuation wheel 7 to swing, it can cause the contact piece 5 to make a rocker motion. At the same time, it can enhance the downward pressure of the contact piece 5 during the rocker motion, further ensuring effective contact between the stationary contact 8 and the moving contact 9, and improving the reliability of the toggle switch.

[0029] In use, the actuating spring 17 inside the operating handle 3 pushes the actuating wheel 7 to spring against the contact piece 5. By manually operating the operating handle 3 to swing, the actuating wheel 7 rolls along the contact piece 5, causing the contact piece 5 to perform a rocker motion. The moving contact 9 at the lower end of the contact piece 5 contacts the corresponding stationary contact 8, thereby changing the circuit connection state. Because a compensating spring 11 is provided between the moving contact 9 and the contact piece 5, when the end of the contact piece 5 is pressed down, the compensating spring 11 can spring to push the moving contact 9 to press against the stationary contact 8, achieving a contact compensation effect between the moving contact 9 and the stationary contact 8, effectively... To prevent poor contact and circuit failure caused by frequent contact and wear between the stationary contact 8 and the moving contact 9, the screw 19 is used to push the actuating spring 17 downward. This compresses the assembly space of the actuating spring 17, causing it to compress and compress the actuating wheel 7. This ensures that when the operating handle 3 drives the actuating wheel 7 to swing, the contact piece 5 can make a rocker motion. At the same time, it can increase the downward force of the contact piece 5 during the rocker motion, further ensuring effective contact between the stationary contact 8 and the moving contact 9 and improving the reliability of the toggle switch.

[0030] The foregoing, in conjunction with the embodiments and accompanying drawings, has clearly and completely described the concept, specific structure, and technical effects of this utility model, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions.

[0031] The above description of the specific embodiments of this utility model is only used to further illustrate this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-essential improvements and adjustments made to this utility model by technical engineers in the art based on the above description of the utility model shall fall within the scope of protection of this utility model.

Claims

1. A contact structure for a toggle switch, comprising a housing (1), characterized in that: A pair of stationary contacts (8) are provided on the bottom wall inside the outer shell (1). A contact piece (5) capable of rocker motion is provided at the bottom inside the outer shell (1). Moving contacts (9) are provided at the bottom of both ends of the contact piece (5). A compensating spring (11) is provided between the moving contact (9) and the contact piece (5). The rocker motion of the contact piece (5) can make the moving contact (9) contact the stationary contact (8). The top of the outer shell (1) is provided with an operating handle (3) that can swing left and right. The bottom of the operating handle (3) is provided with an action wheel (7). An action spring (17) is installed inside the bottom of the operating handle (3). The action spring (17) pushes the action wheel (7) to make elastic contact with the contact piece (5). The swing of the operating handle (3) drives the action wheel (7) to roll along the contact piece (5) and makes the contact piece (5) make a rocker motion.

2. The contact structure of a toggle switch according to claim 1, characterized in that: The upper surfaces of both ends of the contact piece (5) are provided with a housing (10), the compensation spring (11) passes through the end of the contact piece (5) and is embedded in the housing (10), and the inner top wall of the housing (10) is provided with a limiting protrusion (13) inserted into the compensation spring (11).

3. The contact structure of a toggle switch according to claim 1, characterized in that: The two ends of the contact piece (5) are bent upwards, and a guide strip (12) is provided on the moving contact (9), which moves through the contact piece (5).

4. The contact structure of a toggle switch according to claim 1, characterized in that: A support (6) is provided on the inner bottom wall of the outer shell (1). The support (6) is located in the middle between a pair of stationary contacts (8). The contact piece (5) is rotatably mounted on the support (6) in the middle. The stationary contacts (8) and the support (6) are connected to terminals (4) that extend out of the outer shell (1). The terminals (4), contact piece (5), support (6), stationary contacts (8), moving contacts (9) and conductor strip (12) are all made of conductive material.

5. The contact structure of a toggle switch according to claim 1, characterized in that: The top of the outer shell (1) is threaded with a ring seat (2), and the operating handle (3) is inserted inside the ring seat (2). A ball (14) is provided at the position of the operating handle (3) inside the ring seat (2), and the ball (14) is fitted with the inner wall of the ring seat (2).

6. The contact structure of a toggle switch according to claim 1, characterized in that: The two ends of the actuating wheel (7) are provided with protruding ridges (20), which are located on both sides of the contact plate (5). The bottom of the operating handle (3) is provided with an actuating cavity (15), and a pair of baffles (16) are provided in the actuating cavity (15). The actuating spring (17) is located between the pair of baffles (16). The top of the actuating wheel (7) is vertically equipped with a pressure column (18), which extends into the actuating cavity (15) and connects with the baffle (16) located below.

7. The contact structure of a toggle switch according to claim 1, characterized in that: The operating handle (3) has a screw (19) threaded through it. The screw (19) can be unscrewed from the top of the operating handle (3), and the bottom of the screw (19) extends into the action cavity (15).

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