Quick-action switch

Abstract

The utility model discloses a quick-action switch, which comprises a shell, a push rod, a static contact and a movable contact, the push rod is movably arranged in the shell, the outer end of the push rod penetrates through the shell and extends out of the shell, the static contact is arranged in the shell, the inner end of the push rod is provided with a mounting base, and the mounting base is arranged on the shell. Through the arrangement, the mounting base is firstly arranged at the tail end of the push rod, and then the conducting strips are arranged on the upper side and the lower side of the mounting base, so that the moving contact assembly with high bending resistance is formed, the function of preventing the conducting strips from being bent and deformed is achieved, and the effect of enhancing stability is achieved.

Description

Technical Field

[0001] The present application relates to the field of switch technology, and in particular to a quick-acting switch. Background Art

[0002] Switches are widely used in control circuits of various devices. The snap-action switch in the prior art usually includes a housing, a driving member, a static contact and a moving contact. The moving contact provided on the driving member is driven by the displacement of the driving member, so that the moving contact is connected or disconnected with the static contact, forming a normally closed circuit and a normally open circuit respectively, thereby controlling the opening and closing of the circuit.

[0003] In the prior art, the driver in the snap-action switch is usually configured as a push rod, and a conductive sheet capable of conducting electricity is fixed on the push rod, that is, it serves as a moving contact. The structure of the moving contact is relatively simple, and it is usually relatively thin, and has weak bending resistance. It is easy to bend during use, resulting in changes in the switch's operating stroke and even causing the switch to fail. Therefore, there is room for improvement. Summary of the invention

[0004] In view of the above problems, the present application proposes a snap-action switch, which firstly provides a mounting base at the end of the push rod, and then provides conductive sheets on the upper and lower sides of the mounting base, so as to form a moving contact assembly with strong bending resistance, thereby preventing the conductive sheet from bending and deforming, and achieving the effect of enhancing stability; the snap-action switch is specifically implemented by the following technical solutions:

[0005] A snap-action switch comprises: a shell, a push rod, a static contact and a moving contact, wherein the push rod is movably arranged in the shell, and the outer end of the push rod passes through the shell and extends outside the shell, the static contact is arranged in the shell, the inner end of the push rod is provided with a mounting base, and the moving contact is arranged on the mounting base.

[0006] It is further configured that the moving contact includes: a conductive sheet and a moving connector, the conductive sheets are provided in two and the conductive sheets are respectively provided on the upper and lower sides of the mounting base, the moving connector is provided in multiple and the moving connector is provided at both ends of each conductive sheet. Through this configuration, the bending resistance of the moving contact is greatly improved to prevent bending, and the overall structure is more stable.

[0007] It is further configured that the static contact includes a normally open static contact and a normally closed static contact, and a static joint is provided on the static contact corresponding to the position of the moving joint on the moving contact. When the push rod is at the end of the up and down movement, the moving joint is respectively in contact and connected with the static contact on the normally open static contact and the static contact on the normally closed static contact. Through this configuration, the moving contact and the static contact correspond one-to-one to realize the basic functions of connecting and disconnecting the line.

[0008] It is further configured that a first opening and a second opening are respectively provided at the two ends of the conductive sheet and at corresponding positions of the mounting base, and the movable joint is connected to the conductive sheet by passing through the first opening and being interference-fitted into the second opening. Through this configuration, the movable joint is installed, so that the connection between the moving contact and the static contact is more stable, and the overall function is more stable.

[0009] It is further configured that a plurality of first mounting holes are provided on the conductive sheet, and a second mounting hole is provided on the mounting base corresponding to the position of the first mounting hole, and a connecting head is also provided. The conductive sheet is fixed on the mounting base by the connecting head passing through the first mounting hole and being inserted into the second mounting hole with interference fit. Through this configuration, the installation of the conductive sheet is more stable and can be prevented from falling off, and the overall structure is more stable.

[0010] It is further configured that a limiting groove is provided on the conductive sheet, and a limiting block is provided on the mounting base corresponding to the position of the limiting groove. When the conductive sheet is provided on the mounting base, the limiting block is clamped in the limiting groove to form a limiting fit. Through this configuration, the installation of the conductive sheet is more stable and can be prevented from falling off, and the overall structure is more stable.

[0011] It is further configured that a limiting protrusion is provided at the outer end of the push rod, and the limiting protrusion is limited axially with the shell along the push rod during the movement of the push rod. Through this configuration, the push rod is prevented from being damaged to the moving contact and the static contact due to excessive displacement caused by excessive force.

[0012] The snap-action switch described above forms a moving contact assembly with strong bending resistance by firstly providing a mounting base at the end of the push rod and then providing conductive sheets on the upper and lower sides of the mounting base, thereby preventing the conductive sheet from bending and deforming and achieving the effect of enhancing stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 A schematic diagram of the structure of a snap-action switch provided in an embodiment of the present application;

[0015] Figure 2 A cross-sectional view of a snap-action switch provided in an embodiment of the present application Figure 1 ;

[0016] Figure 3A cross-sectional view of a snap-action switch provided in an embodiment of the present application Figure 2 .

[0017] Among them, the reference numerals in the figure are:

[0018] 1. Shell; 2. Push rod; 3. Static contact; 4. Moving contact; 5. Mounting base; 6. Conductive sheet; 7. Moving joint; 8. Normally open static contact; 9. Normally closed static contact; 10. Static joint; 11. First opening; 12. Second opening; 13. First mounting hole; 14. Second mounting hole; 15. Connector; 16. Limit groove; 17. Limit block; 18. Limit protrusion. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] The present application is further described with reference to the accompanying drawings and specific implementation methods:

[0022] Please also read Figures 1 to 3 A quick-acting switch comprises: a housing 1, a push rod 2, a static contact 3 and a moving contact 4, wherein the push rod 2 is movably arranged in the housing 1, and the outer end of the push rod 2 passes through the housing 1 and extends to the outside of the housing 1, the static contact 3 is arranged in the housing 1, the inner end of the push rod 2 is provided with a mounting base 5, and the moving contact 4 is arranged on the mounting base 5.

[0023] See also Figures 1 to 3In this embodiment, the moving contact 4 includes: a conductive sheet 6 and a moving connector 7, the conductive sheet 6 is provided in two pieces and the conductive sheets 6 are provided on the upper and lower sides of the mounting base 5, the moving connector 7 is provided in multiple pieces, and the moving connector 7 is provided at both ends of each conductive sheet 6. In this way, the mounting base 5 is provided as a non-conductive insulator, and the two conductive sheets 6 thereon are completely disconnected. Therefore, during the operation of the push rod 2, each conductive sheet 6 works independently when it is turned on and the electric shock is caused; the static contact 3 includes a normally open static contact 8 and a normally closed static contact 9, and the static contact 3 A static joint 10 is provided at the position of the moving joint 7 on the moving contact 4 corresponding to the upper side. When the push rod 2 is at the end of the up and down movement, the moving joint 7 is respectively in contact with the static contact on the normally open static contact 8 and the static contact 3 on the normally closed static contact 9 for conduction. In addition, a spring and a reset spring are also provided at the position corresponding to the push rod 2 in the housing 1. The main function of the spring and the reset spring is to use the elasticity of the spring and the reset spring to push the push rod 2 to maintain the normally closed state and the normally open state of the electric contact under normal conditions. It should be noted that the application of the spring and the reset spring is a well-known technology in the market, so in The present embodiment will not be described in detail. The first opening 11 and the second opening 12 are respectively provided at the two ends of the conductive sheet 6 and the corresponding positions of the mounting base 5. The movable joint 7 is connected to the conductive sheet 6 by penetrating the first opening 11 and being inserted into the second opening 12 by interference. The main purpose of such arrangement is to make the connection between the conductive sheet 6 and the mounting base 5 more stable. The conductive sheet 6 is also provided with a plurality of first mounting holes 13. The mounting base 5 is provided with a second mounting hole 14 corresponding to the position of the first mounting hole 13, and also includes a connector 15. The conductive sheet 6 is fixedly arranged on the mounting base 5 by means of a connector 15 passing through the first mounting hole 13 and interference-inserted into the second mounting hole 14; a limiting groove 16 is arranged on the conductive sheet 6, and a limiting block 17 is arranged on the mounting base 5 corresponding to the position of the limiting groove 16. When the conductive sheet 6 is arranged on the mounting base 5, the limiting block 17 is clamped in the limiting groove 16 to form a limiting fit; a limiting protrusion 18 is arranged on the outer end of the push rod 2, and the limiting protrusion 18 is limited axially along the push rod 2 together with the shell 1 during the movement of the push rod 2.

[0024] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A snap-action switch comprising: A shell (1), a push rod (2), a static contact (3) and a moving contact (4), wherein the push rod (2) is movably arranged in the shell (1), and the outer end of the push rod (2) passes through the shell (1) and extends to the outside of the shell (1), and the static contact (3) is arranged in the shell (1), and is characterized in that: a mounting base (5) is arranged at the inner end of the push rod (2), and the moving contact (4) is arranged on the mounting base (5).

2. A snap-action switch according to claim 1, characterized in that The movable contact (4) comprises: a conductive sheet (6) and a movable joint (7); the conductive sheets (6) are provided in two numbers and the conductive sheets (6) are respectively provided on the upper and lower sides of the mounting base (5); the movable joint (7) is provided in multiple numbers and the movable joint (7) is provided at both ends of each conductive sheet (6).

3. A snap-action switch according to claim 2, characterized in that The static contact (3) comprises a normally open static contact (8) and a normally closed static contact (9); a static contact (10) is provided on the static contact (3) at a position corresponding to the movable contact (7) on the movable contact (4); when the push rod (2) is at the end of the upper and lower movements, the movable contact (7) is respectively in contact with the static contact on the normally open static contact (8) and the static contact (3) on the normally closed static contact (9) to achieve conduction.

4. A snap-action switch according to claim 2, characterized in that The two ends of the conductive sheet (6) and the corresponding positions of the mounting base (5) are respectively provided with a first opening (11) and a second opening (12); the movable joint (7) is connected to the conductive sheet (6) by passing through the first opening (11) and being interference-fitted into the second opening (12).

5. A snap-action switch according to claim 2, characterized in that The conductive sheet (6) is also provided with a plurality of first mounting holes (13); the mounting base (5) is provided with second mounting holes (14) at positions corresponding to the first mounting holes (13); and a connecting head (15) is further provided; the conductive sheet (6) is fixedly arranged on the mounting base (5) by means of the connecting head (15) penetrating through the first mounting holes (13) and being inserted into the second mounting holes (14) by interference fit.

6. A snap-action switch according to claim 2, characterized in that A limiting groove (16) is arranged on the conductive sheet (6), and a limiting block (17) is arranged on the mounting base (5) corresponding to the position of the limiting groove (16); when the conductive sheet (6) is arranged on the mounting base (5), the limiting block (17) is clamped in the limiting groove (16) to form a limiting fit.

7. A snap-action switch according to claim 1, characterized in that A limiting protrusion (18) is provided at the outer end of the push rod (2), and the limiting protrusion (18) limits the axial position of the push rod (2) together with the housing (1) during the movement of the push rod (2).

Images