Rotary switch

Abstract

The utility model provides a rotary switch, which comprises a shell and a rotating piece, the shell comprises an upper cover, the upper cover is provided with a plurality of limiting grooves and protruding parts, the plurality of limiting grooves are arranged at intervals in the circumferential direction, the protruding parts are used for forming the connection between the adjacent limiting grooves, the rotating piece is rotationally connected to the upper cover, and the limiting grooves are arranged on the upper cover. A limiting block is arranged on the rotating piece, and the limiting block extends in the radial direction and is arranged in an elastic telescopic mode. Aiming at the defects in the prior art, the utility model provides the rotary switch which is strong in stability and longer in service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to the switch field especially a kind of rotary switch. BACKGROUND

[0002] Rotary switch is a kind of switch element that realizes circuit on-off or switching function by rotating operation, rotary switch usually includes shell and rotating member, rotating member, moving contact, several static contacts are arranged in shell, several the static contact is axially distributed in shell, the moving contact moves with rotating member circumferentially, by the position change of moving contact, form with different static contact to remove, to realize circuit on-off or switching, the rotary switch of prior art, its shell and rotating member are also provided with limit groove and limit spring sheet, limit spring sheet can extend into limit groove, the position of rotating member and moving contact is limited, limit spring sheet can also be deformed and get out of limit groove with rotating member displacement, but by the structure of limit spring sheet and limit groove cooperation, limit spring sheet and limit groove are prone to wear and deformation, after long-term use, it can lead to the problem of limit effect invalidation or jam. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides a rotary switch with strong stability and longer service life.

[0004] To achieve the above object, the utility model provides a rotary switch, including shell and rotating member, the shell includes upper cover, the upper cover is provided with several limit grooves and protruding parts, several limit grooves are arranged at intervals circumferentially, the protruding part is used to constitute the connection between adjacent limit grooves, the rotating member is rotatably connected on the upper cover, and limit block is arranged on the rotating member, the limit block extends radially and is elastically telescopic.

[0005] The advantages of the above technical scheme are as follows: compared with the rotary switch of the prior art, the several limit grooves arranged at intervals circumferentially on the upper cover in the present scheme cooperate with the limit block on the rotating member, which can accurately limit the rotation angle and position of the rotating member, avoids the rotation position deviation caused by the deformation of the limit spring sheet in the prior art, ensures the stable and accurate operation of the rotary switch, and the limit block extends radially and is elastically telescopic, which can automatically expand or contract according to the rotation condition, reduces the wear of the limit block, prolongs the service life, and can always cooperate tightly with the limit groove, even if there is a slight deviation or uneven stress during rotation, the limit block can also be adjusted adaptively through elastic telescoping, to maintain stable limiting effect.

[0006] The utility model can be further provided as follows: the several limit grooves and protruding parts are symmetrically arranged at both sides of the rotating member, the rotating member is provided with an elastic member along its diameter line, and the limit block is arranged at both ends of the elastic member.

[0007] Through further setting, the rotating piece is provided with elastic pieces along the radial line, and the limiting blocks are arranged at the two ends of the elastic pieces, so that the elastic pieces can provide the limiting blocks with continuous and stable elastic force, and the limiting blocks always have the tendency of being closely matched with the limiting grooves, and the stability is higher, and when the rotating piece is subjected to external force, the elastic force of the elastic pieces can buffer part of the external force, and the impact on the rotating piece and the limiting structure is reduced, and the stability in the rotating process is further enhanced, and meanwhile, the existence of the elastic pieces makes the limiting blocks more smooth when entering and leaving the limiting grooves, and the situation of jamming or sudden jumping does not occur, and the stability of the operation of the rotary switch is maintained.

[0008] The utility model discloses further can set up as: the upper cover correspond to the lower portion of limiting groove and protruding portion is provided with the guide surface, the guide surface is towards the limiting groove and protruding portion and is arranged to extend obliquely.

[0009] Through further setting, the guide surface is arranged to extend obliquely towards the limiting groove and the protruding portion, so that the limiting block can be better guided into the limiting groove during assembly, and installation is facilitated.

[0010] The utility model discloses further can set up as: the shell includes base, the base is provided with a plurality of first static contact piece and the second static contact piece at the axis of rotating piece, a plurality of first static contact piece is arranged at the circumference interval, the rotating piece is provided with spring and dynamic contact piece, the dynamic contact piece is inserted with the cooperation of rotating piece, and the both ends of spring are respectively with rotating piece and dynamic contact piece and abutment cooperation.

[0011] Through further setting, the dynamic contact piece is inserted with the cooperation of the rotating piece, and the position of the dynamic contact piece on the rotating piece can be accurately limited, the dynamic contact piece can be conveniently moved circumferentially during the rotation of the rotating piece, and the dynamic contact piece can also be prevented from moving or deviating during movement, and the both ends of the elastic piece are respectively abutted with the rotating piece and the dynamic contact piece, so that the dynamic contact piece can be pressed on the first static contact piece to ensure the stability of the electrical connection, and the elastic piece can also facilitate the movement of the dynamic contact piece driven by the rotating piece.

[0012] The utility model discloses further can set up as: the dynamic contact piece is long strip shape setting and is formed with the inserted part in both ends bending, and the dynamic contact piece is inserted on the rotating piece through the inserted part, and the dynamic contact piece is also provided with the first contact and the second contact that cooperate with the first static contact piece and the second static contact piece respectively, the first contact is arranged at the axis of rotating piece, and the second contact is arranged at the radial extension of rotating piece.

[0013] By further setting, the moving contact piece is long strip-shaped and the two ends are bent to form plug-in parts, the plug-in cooperation of the moving contact piece and the rotating part is formed, the rotating part can drive the moving contact piece to rotate with it in the rotating process, and the first contact and the second contact are arranged, since the first contact is located at the axis, the position is relatively fixed in the rotating process, is not easily affected by the centrifugal force and other factors generated by rotation, and can always keep good contact with the first fixed contact piece. The second contact is arranged at the radially extending position, so that the rotating range of the rotating part can be fully utilized to realize accurate contact with the first fixed contact piece at different positions, and the stability and reliability of the circuit connection are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a perspective view of the utility model embodiment;

[0015] Figure 2 It is a side view of the utility model embodiment;

[0016] Figure 3 It is the sectional view of B-B of the utility model embodiment Figure 2

[0017] Figure 4 It is the structure schematic view of the rotating part in the utility model embodiment;

[0018] Figure 5 It is the structure schematic view of the base in the utility model embodiment;

[0019] Figure 6 It is the structure schematic view of the upper cover in the utility model embodiment;

[0020] Wherein: the shell 1;Upper cover 11;Limiting groove 111;Convex part 112;Guide surface 113;Base 12;Rotating part 2;Limiting block 21;Elastic member 22;Spring 23;Moving contact piece 24;Plug-in part 241;First contact 242;Second contact 243;First fixed contact piece 3;Second fixed contact piece 4. DETAILED DESCRIPTION

[0021] The embodiment of the utility model one kind rotates switch as shown in Figures 1-6 As shown: including shell 1 and rotating part 2, the shell 1 includes upper cover 11, the upper cover 11 is provided with a plurality of limiting grooves 111 and convex parts 112, a plurality of limiting grooves 111 are arranged in circumferential interval, the convex part 112 is used to constitute the connection between adjacent limiting grooves 111, the rotating part 2 is rotatably connected on the upper cover 11, and the rotating part 2 is provided with limiting block 21, the limiting block 21 extends radially and is arranged in elastic expansion.

[0022] ​A plurality of said limiting grooves 111 and protruding portions 112 are symmetrically arranged at both sides of the rotating member 2, the rotating member 2 is provided with elastic members 22 along the radial line thereof, and the limiting blocks 21 are arranged at both ends of the elastic members 22.

[0023] Said upper cover 11 is provided with a guide surface 113 below the corresponding limiting groove 111 and protruding portion 112, and the guide surface 113 is arranged in an inclined extension towards the limiting groove 111 and protruding portion 112.

[0024] Said shell 1 comprises a base 12, a plurality of first static contact pieces 3 and a second static contact piece 4 located at the axis of the rotating member 2 are arranged on the base 12, the first static contact pieces 3 are arranged in a circumferential interval, a spring 23 and a dynamic contact piece 24 are arranged on the rotating member 2, the dynamic contact piece 24 is in a plug-in cooperation with the rotating member 2, and both ends of the spring 23 are in an abutting cooperation with the rotating member 2 and the dynamic contact piece 24 respectively.

[0025] Said dynamic contact piece 24 is in a long strip shape and is bent at both ends to form plug-in portions 241, the dynamic contact piece 24 is inserted and arranged on the rotating member 2 through the plug-in portions, and the dynamic contact piece 24 is further provided with a first contact point 242 and a second contact point 243 which are in a cooperation with the second static contact piece 4 and the first static contact piece 3 respectively, the first contact point 242 is arranged at the axis corresponding to the rotating member 2, and the second contact point 243 is arranged at the radial extension of the rotating member 2.

[0026] The above examples are only one of the preferred specific examples of the present application, and the common changes and replacements made by the person skilled in the art within the technical scheme of the present application are all included in the protection scope of the present application.

Claims

1. A rotary switch, comprising a housing and a rotating component, characterized in that: The housing includes a top cover, on which a plurality of limiting grooves and protrusions are provided. The plurality of limiting grooves are arranged circumferentially at intervals, and the protrusions are used to form a connection between adjacent limiting grooves. The rotating component is rotatably connected to the top cover, and a limiting block is provided on the rotating component. The limiting block extends radially and is elastically telescopic.

2. The rotary switch according to claim 1, characterized in that: Several limiting grooves and protrusions are symmetrically arranged on both sides of the rotating component, and an elastic element is inserted through the rotating component along its radial line. The limiting blocks are arranged at both ends of the elastic element.

3. The rotary switch according to claim 2, characterized in that: The upper cover is provided with a guide surface below the corresponding limiting groove and the protrusion, and the guide surface extends obliquely toward the limiting groove and the protrusion.

4. The rotary switch according to claim 1, 2, or 3, characterized in that: The housing includes a base, on which are provided a plurality of first stationary contact pieces and a second stationary contact piece located at the axis of the rotating component. The plurality of first stationary contact pieces are circumferentially spaced apart. The rotating component is provided with a spring and a moving contact piece. The moving contact piece is inserted into the rotating component, and the two ends of the spring are respectively engaged with the rotating component and the moving contact piece.

5. The rotary switch according to claim 4, characterized in that: The movable contact piece is elongated and bent at both ends to form insertion parts. The movable contact piece is inserted into the rotating part through the insertion parts. The movable contact piece is also provided with a first contact point and a second contact point that cooperate with the first stationary contact piece and the second stationary contact piece respectively. The first contact point is located at the axis of the corresponding rotating part, and the second contact point is located at the radial extension of the rotating part.

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