Change-over switch

Abstract

The utility model provides a change-over switch, comprising a contact component provided with a contact cavity; the switch base is fixedly connected with the contact component; the gear shifting component comprises an input assembly and a rotating shaft assembly, the rotating shaft assembly comprises a rotating frame, and the rotating frame is provided with a contact shaft rotationally connected to the contact cavity and a connecting rod; the input assembly comprises an input piece, a rotating plate fixedly connected with the tail end of the input piece, a column base rotationally connected to the rotating plate, and a connecting frame connected with the connecting rod and the column base. By rotating the input part, the rotating plate rotates along the center line of the input part, so that the column base is driven to rotate, the distance between the column base and the vertical plane where the center line of the input part is located is increased or decreased, and the column base drives the connecting frame, so that the contact shaft of the rotating frame and the contact cavity rotate relatively; meanwhile, the column base can only move annularly along a certain diameter, namely, the swing angle of the connecting frame is limited, so that the contact position of the moving contact can be prevented from being influenced when the rotating force is too large.

Description

Technical Field

[0001] This utility model relates to the technical field of electrical components, and more specifically, to a changeover switch. Background Technology

[0002] In electrical equipment, changeover switches are primarily used for infrequent switching on and off of circuits, connecting electrical loads. Changeover switches have a wide range of applications, serving as circuit control switches, test equipment switches, motor control switches, and master control switches. Because changeover switches can handle relatively large currents, they typically require high safety features.

[0003] As a type of switching device that can switch between two or more power sources or loads, changeover switches are widely used in various electrical equipment as society continues to develop.

[0004] Chinese invention patent application CN107316772A discloses a changeover switch, including a mounting panel and a rotary handle mounted on the mounting panel. The lower end of the rotary handle is connected to a rotating shaft. The changeover switch also includes a contact system and a positioning mechanism. The rotating shaft has a first rotating shaft and a second rotating shaft that can move relative to each other. The moving contact has a first moving contact and a second moving contact along the extension direction of the rotating shaft. The first moving contact is disposed on the first rotating shaft and close to the mounting panel, and the second moving contact is disposed on the second rotating shaft. The height of the first moving contact is greater than the height of the second moving contact.

[0005] However, the aforementioned changeover switch has its rotating shaft and moving contact directly connected along the axis and hub. During gear shifting, if the rotation force of the rotary handle is too great, the rotating shaft will be subjected to excessive force and may easily deform, which may affect the contact position of the moving contact and the gear shifting accuracy. Utility Model Content

[0006] Therefore, in order to solve the problem that in existing changeover switches, the rotating shaft and moving contact are directly set along the axis and connected by a hub, and excessive rotational force can easily affect the contact position of the moving contact during gear shifting, this utility model provides a changeover switch, the specific technical solution of which is as follows:

[0007] A changeover switch, comprising:

[0008] The contact component is provided with a contact cavity;

[0009] A switch base is fixedly connected to the contact component;

[0010] The gear shifting component includes an input assembly and a rotating shaft assembly. The rotating shaft assembly includes a rotating frame with a contact shaft rotatably connected to a contact cavity and a connecting rod. The input assembly includes an input component rotatably connected to the switch base, a rotating plate fixedly connected to the end of the input component, a column base rotatably connected to the rotating plate, and a connecting frame connecting the connecting rod and the column base.

[0011] The aforementioned changeover switch, by rotating the input component, causes the rotating plate to rotate along the center line of the input component, thereby driving the column base to rotate as well. The distance between the column base and the vertical plane containing the center line of the input component increases or decreases. The column base drives the connecting frame, thereby causing the contact shaft of the rotating frame to rotate relative to the contact cavity. At the same time, since the column base can only move in a ring along a certain diameter, that is, the swing angle of the connecting frame is limited, it can avoid affecting the contact position of the moving contact when the rotational force is too large.

[0012] Furthermore, the connecting frame includes a connecting plate rotatably connected to the connecting rod, and a connecting shaft rotatably connected to the connecting plate; the column base is provided with a rotating head rotatably connected to the rotating plate, and a connecting U-shaped end rotatably connected to the connecting shaft.

[0013] Furthermore, the connecting U-shaped end is provided with a limiting pin that confines the connecting shaft within the U-shaped cavity.

[0014] Furthermore, the gear shifting component also includes a limiting component; the limiting component is used to limit the rotational position of the rotating frame relative to the contact component.

[0015] Furthermore, the limiting assembly includes a limiting block rotatably connected to the switch base and a spring member, one end of the spring member being connected to the switch base and the other end being connected to the limiting block; the rotating frame is provided with a limiting part adapted to the limiting block.

[0016] Furthermore, the limiting block is provided with a hook groove;

[0017] The limiting part includes a first limiting post disposed in the hook groove; the switch base is provided with an air-avoiding groove adapted to the first limiting post.

[0018] Furthermore, the limiting part also includes a second limiting post disposed outside the hook groove.

[0019] Furthermore, the limiting block is also provided with a reset flange.

[0020] Furthermore, the connecting frame is generally U-shaped, and connecting plates are provided at both ends of the connecting shaft.

[0021] Furthermore, the input element is connected to the switch base via a rotating seat. Attached Figure Description

[0022] The present invention can be further understood from the following description taken in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale; rather, the focus is on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0023] Figure 1 This is a schematic diagram of the structure of the changeover switch according to an embodiment of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of the changeover switch according to an embodiment of the present invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the structure of the changeover switch according to an embodiment of the present invention. Figure 3 ;

[0026] Figure 4 This is a schematic diagram of the structure of the changeover switch according to an embodiment of the present invention. Figure 4 .

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Contact components; 2. Switch base; 3. Gear shifting components; 4. Input components; 5. Rotary shaft components; 6. Limit components;

[0029] 41. Input component; 42. Rotating plate; 43. Column base; 44. Connecting frame; 45. Rotating seat;

[0030] 441. Connecting plate; 442. Connecting shaft;

[0031] 51. Rotating frame;

[0032] 511. Contact shaft; 512. Connecting rod; 513. First limiting post; 514. Second limiting post;

[0033] 61. Limiting block; 62. Spring component;

[0034] 611. Reset flange. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit its scope of protection.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] In this utility model, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0039] like Figure 1 and Figure 2 , Figure 3 , Figure 4 As shown, a changeover switch in one embodiment of the present invention includes:

[0040] Contact component 1 is provided with a contact cavity;

[0041] The switch base 2 is fixedly connected to the contact component 1;

[0042] The gear shifting component 3 includes an input component 4 and a rotating shaft assembly 5. The rotating shaft assembly 5 includes a rotating frame 51, which is provided with a contact shaft 511 rotatably connected to the contact cavity and a connecting rod 512. The input component 4 includes an input piece 41 rotatably connected to the switch base 2, a rotating plate 42 fixedly connected to the end of the input piece 41, a column base 43 rotatably connected to the rotating plate 42, and a connecting frame 44 connecting the connecting rod 512 and the column base 43.

[0043] The aforementioned changeover switch, by rotating the input component 41, causes the rotating plate 42 to rotate along the center line of the input component 41, thereby driving the column base 43 to rotate as well. The distance of the column base 43 relative to the vertical plane where the center line of the input component 41 is located increases or decreases. The column base 43 drives the connecting frame 44, thereby causing the contact shaft 511 of the rotating frame 51 to rotate relative to the contact cavity. At the same time, since the column base 43 can only move in a ring along a certain diameter, that is, the swing angle of the connecting frame 44 is limited, it can avoid affecting the contact position of the moving contact when the rotational force is too large.

[0044] Specifically, multiple moving contacts are welded onto the contact shaft 511. When the contact shaft 511 rotates, the moving contacts sequentially connect or disconnect with the stationary contacts in the contact cavity.

[0045] In one embodiment, the connecting frame 44 includes a connecting plate 441 rotatably connected to the connecting rod 512, and a connecting shaft 442 rotatably connected to the connecting plate 441; the column base 43 is provided with a rotating head rotatably connected to the rotating plate 42, and a connecting U-shaped end rotatably connected to the connecting shaft 442. Thus, by rotatably connecting the connecting shaft 442 to the connecting U-shaped end, relative rotation between the connecting frame 44 and the column base 43 is achieved.

[0046] In one embodiment, the connecting U-shaped end is provided with a limiting pin that limits the connecting shaft 442 within the U-shaped cavity.

[0047] In one embodiment, the gear shifting component 3 further includes a limiting component 6; the limiting component 6 is used to limit the rotational position of the rotating frame 51 relative to the contact component 1. Thus, the limiting component 6 limits the rotational position of the rotating frame 51 relative to the contact component 1, preventing gear shifting during use and thus avoiding any impact on the performance.

[0048] In one embodiment, the limiting assembly 6 includes a limiting block 61 rotatably connected to the switch base 2 and a spring 62, one end of which is connected to the switch base 2 and the other end to the limiting block 61; the rotating frame 51 is provided with a limiting portion adapted to the limiting block 61. Specifically, the spring 62 is a tension spring. Thus, by the spring 62 pulling the limiting block 61, causing the limiting block 61 to press against the limiting portion, an elastic force is provided to limit the rotational position of the rotating frame 51 relative to the contact component 1.

[0049] In one embodiment, the limiting block 61 is provided with a hook groove; the limiting part includes a first limiting post 513 disposed in the hook groove; the switch base 2 is provided with a clearance groove adapted to the first limiting post 513. In this way, the hook groove hooks and presses against the first limiting post 513, which can prevent the first limiting post 513 from falling out of the hook groove and affecting the limiting effect of the limiting block 61 pressing against the limiting part.

[0050] In one embodiment, the limiting part further includes a second limiting post 514 disposed outside the hook groove. In this way, the second limiting post 514 and the first limiting post 513 cooperate to avoid the relative position of the limiting part and the hook groove, and ensure the limiting effect of the limiting block 61 pressing against the limiting part.

[0051] In one embodiment, the limiting block 61 is further provided with a reset flange 611. Thus, since the changeover switch needs to be disconnected in an emergency, pressing the reset flange 611 can cause the contact shaft 511 of the rotating frame 51 to rotate relative to the contact cavity, thereby resetting it to a preset state.

[0052] In one embodiment, the connecting frame 44 is generally U-shaped, and connecting plates 441 are respectively provided at both ends of the connecting shaft 442. In this way, the U-shaped structure is stable and reliable, and the connecting plates 441 at both ends of the connecting shaft 442 can limit the U-shaped cavity of the connecting shaft 442 at the U-shaped end.

[0053] In one embodiment, the input element 41 is connected to the switch base 2 via a rotating seat 45. Specifically, the input element 41 is rotatably connected to a copper sleeve inside the rotating seat 45.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A changeover switch, characterized in that, include: The contact component (1) is provided with a contact cavity; The switch base (2) is fixedly connected to the contact component (1); The gear shifting component (3) includes an input assembly (4) and a rotating shaft assembly (5). The rotating shaft assembly (5) includes a rotating frame (51), which is provided with a contact shaft (511) rotatably connected to the contact cavity and a connecting rod (512). The input assembly (4) includes an input piece (41) rotatably connected to the switch base (2), a rotating plate (42) fixedly connected to the end of the input piece (41), a column base (43) rotatably connected to the rotating plate (42), and a connecting frame (44) connecting the connecting rod (512) and the column base (43). By rotating the input component (41), the rotating plate (42) rotates along the center line of the input component (41), thereby causing the column base (43) to rotate as well. The distance between the column base (43) and the vertical plane containing the center line of the input component (41) increases or decreases. The column base (43) drives the connecting frame (44), thereby causing the contact shaft (511) of the rotating frame (51) to rotate relative to the contact cavity.

2. A changeover switch according to claim 1, characterized in that, The connecting frame (44) includes a connecting plate (441) rotatably connected to the connecting rod (512), and a connecting shaft (442) rotatably connected to the connecting plate (441); The column base (43) is provided with a rotating head that is rotatably connected to the rotating plate (42) and a connecting U-shaped end that is rotatably connected to the connecting shaft (442).

3. A changeover switch according to claim 2, characterized in that, The connecting U-shaped end is provided with a limiting pin that limits the connecting shaft (442) within the U-shaped cavity.

4. A changeover switch according to claim 1, characterized in that, The gear shifting component (3) also includes a limiting component (6); The limiting component (6) is used to limit the rotational position of the rotating frame (51) relative to the contact component (1).

5. A changeover switch according to claim 4, characterized in that, The limiting component (6) includes a limiting block (61) rotatably connected to the switch base (2) and a spring (62), one end of the spring (62) being connected to the switch base (2) and the other end being connected to the limiting block (61); The rotating frame (51) is provided with a limiting part that is adapted to the limiting block (61).

6. A changeover switch according to claim 5, characterized in that, The limiting block (61) is provided with a hook groove; The limiting part includes a first limiting post (513) disposed in the hook groove; The switch base (2) is provided with a clearance groove adapted to the first limiting post (513).

7. A changeover switch according to claim 6, characterized in that, The limiting part also includes a second limiting post (514) disposed outside the hook groove.

8. A changeover switch according to claim 5, characterized in that, The limiting block (61) is also provided with a reset flange (611).

9. A changeover switch according to claim 3, characterized in that, The connecting frame (44) is generally U-shaped, and the two ends of the connecting shaft (442) are respectively provided with connecting plates (441).

10. A changeover switch according to claim 1, characterized in that, The input element (41) is connected to the switch base (2) via a rotating seat (45).

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