CN215644254U

CN215644254U - Rotary switch

Info

Publication number: CN215644254U
Application number: CN202122018850.2U
Authority: CN
Inventors: 万金富
Original assignee: Zhejiang Nichang Electric Appliance Co ltd
Current assignee: Zhejiang Nichang Electric Appliance Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-01-25
Anticipated expiration: 2031-08-24

Abstract

The utility model relates to an electric device, in particular to a rotary switch, which solves the problem of structure. Including casing, static contact and movable contact, still include turning handle, top pearl and spring, it is spacing that the casing joint axial is located to the turning handle part, turning handle one end is equipped with gear portion, the spring both ends butt casing and top pearl respectively, top pearl and keep off the position portion between the elasticity butt, and keep off position portion and restrict circumferential direction through pushing off the pearl, be equipped with the gear groove that a plurality of depths differ in the gear portion, it switches over the fender position to push off the pearl through rotating the turning handle entering different gear grooves, have relative silver contact between movable contact and the static contact, and break away from mutually between movable contact and the static contact. Design benefit, reasonable, the less household electrical appliances of specially adapted volume can ensure electric life-span simultaneously again, and structural scheme can further design into diversified switch circuit, and the different connected mode of pin can satisfy different user demands, and application scope is wide.

Description

Rotary switch

Technical Field

The present invention relates to an electric device, and more particularly, to a rotary switch.

Background

The traditional small switches in the market are all contacted by metal elastic pieces (without silver contacts), and the switches are subjected to gear shifting, friction and jumping, are easy to wear, have short electrical service life and are easy to burn off switch loads; and if the rotary switch with the silver contact in collision contact is available in the market, the rotary switch is large in size and is not suitable for appliances such as small household appliances of customers. In addition, the existing product is too simple in structure design, short in service life, not high in safety and the like, and the existing use requirements are difficult to meet.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a rotary switch.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: a rotary switch comprises a shell, a static contact piece, a movable contact piece, a rotary handle, a top ball and a spring, wherein the rotary handle is partially arranged in the shell and is clamped and axially limited, one end of the rotary handle is provided with a blocking part, two ends of the spring are respectively abutted against the shell and the top ball, the top ball is elastically abutted against the blocking part, the blocking part limits circumferential rotation through the top ball, the blocking part is provided with a plurality of blocking grooves with different depths, the top ball enters different blocking grooves to switch over blocking positions by rotating the rotary handle, opposite silver contacts are arranged between the movable contact piece and the static contact piece, a connection state and a disconnection state are arranged between the movable contact piece and the static contact piece, and the movable contact piece is abutted against the static contact piece in the connection state; when the switch is in a disconnected state, the rotating handle rotates to be linked with the movable contact piece in an abutting mode, and the movable contact piece is separated from the static contact piece.

The movable contact spring comprises a fixed end, a bending part, a reinforcing part and a butt end which are sequentially arranged, the fixed end and the shell are fixedly assembled, and the silver contact is arranged on the butt end.

The joint of the fixed end and the bending part is provided with an arc-shaped turning corner, and the bending part inclines towards the side of the fixed end.

The bending part is in an arch bridge shape.

The reinforcing part is bent towards one side of the rotating handle, and the reinforcing part and the rotating bending angle are protruded towards the same side.

The terminal pin that forms of stiff end one side, the pin is through electric wire insertion, standard terminal butt joint grafting or welding electricity connection.

And the shell is internally provided with a mounting groove for mounting the spring and the top bead.

The shell is of a split structure and is fixedly assembled through fastening.

The utility model has the beneficial effects that: the rotary switch provided by the utility model is ingenious and reasonable in design, is particularly suitable for household appliances with small size, can ensure the electrical service life, can be further designed into various switch circuits by adopting a structural scheme, can meet different user requirements by adopting different connection modes of pins, and is wide in application range.

Drawings

FIG. 1 is a schematic view of the combined structure of the present invention;

fig. 2 is an exploded view of the present invention.

Detailed Description

As shown in fig. 1-2, a rotary switch includes a housing 1, a static contact 2, a movable contact 3, a rotary handle 4, a ball 5 and a spring 6, wherein the rotary handle 4 is partially disposed in the housing 1 and is axially limited, a blocking portion 7 is disposed at one end of the rotary handle 4, two ends of the spring 6 are respectively abutted to the housing 1 and the ball 5, the ball 5 and the blocking portion 7 are elastically abutted to each other, the blocking portion 7 is limited by the ball 5 to rotate circumferentially, a plurality of blocking grooves 8 with different depths are disposed on the blocking portion 7, and the ball 5 enters different blocking grooves 8 to switch blocking positions by rotating the rotary handle 4. This structural scheme can be in a flexible way according to customer's demand, and gear rotation angle is nimble flexible (22.5, 30 °, 45 °, 60 °, 90 etc.), (can satisfy 360 not restricted shifts simultaneously), and the switch circuit changes the diversification, all only needs to change different rocking handle 4 gears (15 plastics), reaches application scope extensively. The spring 6 and the top ball 5 have the function of keeping the rotating handle 4 in a gear position and are not easily changed by external force.

The movable contact piece 3 and the static contact piece 2 are provided with opposite silver contacts 9, so that a silver contact collision contact mode is not adopted in the small-volume rotary switch, the switch can really bear the current of more than 10A for a long time without heating by adopting contact, and safety in the true sense is achieved.

The movable contact piece 3 and the static contact piece 2 are in a connected state and a disconnected state, and the movable contact piece 3 is in butt contact with the static contact piece 2 in the connected state; when the switch is in a disconnected state, the rotating handle 4 rotates to be linked with the movable contact piece 3 in an abutting mode, and the movable contact piece 3 is separated from the static contact piece 2. The movable contact piece 3, the static contact piece 2 and the rotating handle 4 have relative states of linkage response, so that the switching of gears or switch circuits is realized.

The movable contact piece 3 comprises a fixed end 10, a bending part 11, a reinforcing part 12 and an abutting end 13 which are sequentially arranged, the fixed end 10 and the shell 1 are fixedly assembled, and the silver contact 9 is arranged on the abutting end 13. The joint of the fixed end 10 and the bent portion 11 has an arc-shaped turning corner, and the bent portion 11 inclines toward the fixed end 10. The space occupation is reduced, the structure is relatively contracted, and the layout design is convenient. The bending part 11 is in an arch bridge shape, and the center of the bending part 11 is in a horizontal straight line shape, so that compared with an arc structure, the bending part has certain rigidity, and the relative position of the reinforcing part 12 can be kept unchanged.

The reinforcing portion 12 is bent toward the stem 4, and the reinforcing portion 12 protrudes toward the same side as the turning angle. The reinforcing part 12 is always in collision contact when shifting gears, so that the design can improve local structural strength and ensure stable and reliable contact.

The end of one side of the fixed end 10 forms a pin, and the pin is electrically connected through wire insertion, standard terminal butt-joint insertion or welding. The wiring terminal does not need to adopt the traditional same (the modes of turning over and riveting for fixing, twisting the angle of a pin and the like) and is already arranged and fixed when the assembly is adopted. The assembly is convenient, the uncertain deviation caused by rivet turning is reduced, and meanwhile, the product is convenient to maintain. The pin wiring mode can be wire insertion type, 4.8 x 0.5 standard terminal butt-joint insertion type and welding type connection to meet different requirements.

The mounting groove 14 for mounting the spring 6 and the ejector bead 5 is formed in the shell 1, and the fixing groove 15 for mounting the static contact piece 2 is further formed in the shell 1, so that the mounting and the connection are convenient. Casing 1 is split type structure, and casing 1 makes things convenient for dismouting and stable connection through the fixed assembly of lock joint.

A plastic member 16 is further included to prevent the spring 6 and the knob 5 from being removed from the rotary switch.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, are not to be considered as limiting the present invention, and that the fundamental principles, the main features, and the advantages of the present invention are shown and described above, as would be understood by those skilled in the art.

Claims

1. A rotary switch comprises a shell, a static contact piece and a movable contact piece, and is characterized by further comprising a rotating handle, a pushing ball and a spring, wherein the rotating handle is partially arranged in the shell and is clamped and axially limited, a blocking part is arranged at one end of the rotating handle, two ends of the spring are respectively abutted against the shell and the pushing ball, the pushing ball is elastically abutted against the blocking part, the blocking part is limited to rotate circumferentially by the pushing ball, a plurality of blocking grooves with different depths are formed in the blocking part, the pushing ball enters different blocking grooves to switch over blocking positions by rotating the rotating handle, opposite silver contacts are arranged between the movable contact piece and the static contact piece, a connection state and a disconnection state are arranged between the movable contact piece and the static contact piece, and the movable contact piece and the static contact piece are abutted against each other in the connection state; when the switch is in a disconnected state, the rotating handle rotates to be linked with the movable contact piece in an abutting mode, and the movable contact piece is separated from the static contact piece.

2. A rotary switch according to claim 1, wherein said movable contact piece comprises a fixed end, a bent portion, a reinforced portion and an abutting end arranged in sequence, said fixed end and said housing are fixedly assembled, and said silver contact is arranged on said abutting end.

3. The rotary switch according to claim 2, wherein the joint of the fixed end and the bent portion has a turning corner in an arc shape, and the bent portion is inclined toward the fixed end side.

4. A rotary switch according to claim 3, wherein said bent portion has an arch bridge shape.

5. A rotary switch according to claim 3, wherein the reinforcing portion is bent toward the stem, and the reinforcing portion is projected toward the same side as the turning angle.

6. A rotary switch according to claim 2, wherein said fixed end is formed at one side end thereof with a pin, and said pin is electrically connected by wire insertion, standard terminal butt-plug or soldering.

7. A rotary switch according to claim 1, wherein the housing has a mounting groove for mounting the spring and the ball.

8. A rotary switch according to claim 1, wherein the housing is of split construction and the housing is fixedly assembled by snap-fitting.