CN219658593U

CN219658593U - Movable contact structure and rotary switch

Info

Publication number: CN219658593U
Application number: CN202320869933.9U
Authority: CN
Inventors: 罗瑞球
Original assignee: Zhongshan Baiqiao Electric Appliance Industry Co ltd
Current assignee: Zhongshan Baiqiao Electric Appliance Industry Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-09-08
Anticipated expiration: 2033-04-18

Abstract

The utility model relates to the field of rotary switches, in particular to a movable contact structure and a rotary switch. The movable contact structure comprises a body, a plurality of contact pieces are arranged on the body, the contact pieces are bent upwards, and the movable contact structure further comprises a plurality of transition arc pieces, wherein the transition arc pieces are positioned between two adjacent contact pieces. The rotary switch comprises a movable contact structure, and further comprises a shell and a plastic part, wherein the shell comprises a top shell, a mounting part and a bottom shell, the plastic part is rotationally mounted in the shell, the plastic part comprises a central shaft and a rubber part, the rubber part rotates in the bottom shell, the top end of the central shaft extends out of the top shell, the movable contact structure is buckled on the rubber part upwards from the bottom of the rubber part, a plurality of static contacts are fixedly mounted in the bottom shell, and the static contacts are elastic and are in contact with the body. The rotary switch provided by the utility model has the advantages of preventing contact with a plastic part, further preventing abnormal temperature rise from affecting use and being high in stability.

Description

Movable contact structure and rotary switch

Technical Field

The utility model relates to the field of rotary switches, in particular to a movable contact structure and a rotary switch.

Background

The switch is used as the most common electronic element in circuit control, and can control the opening and closing of a circuit; at present, there is a rotary switch which can turn off a front contact and then turn on a rear contact at the time of transposition, and there is a state of being turned off with both the front contact and the rear contact between the rotary switch and the movable contact or a state of being contacted with both the front contact and the rear contact at the time of transposition, and then turn off the front contact and keep a contact state with the rear contact. The appropriate rotary switch may be selected in the circuit design according to the circuit use and circuit safety.

For example, patent document with publication number CN206441653U discloses a rotary switch, which comprises a housin, be equipped with the control axle in the casing, the upper end of control axle stretches out outside the casing, the lower extreme of control axle is equipped with the mounting disc, be equipped with the movable contact of annular structure on the mounting disc, the movable contact setting of movable contact is on the global of mounting disc, the casing is equipped with the static contact with movable contact matched with of movable contact along the circumference of mounting disc, the static contact includes stationary blade and elastic disc, the stationary blade is fixed to be set up in the casing, the elastic disc is extended to being close to the mounting disc direction by the stationary blade, the tip of elastic disc is equipped with the static contact that can contradict with the movable contact of movable contact, the middle part of elastic disc is bent and is set up, the tip of elastic disc department of bending is kept away from the direction setting of mounting disc one side.

For another example, a patent document with publication number CN203910624U discloses a combined rotary switch with external wires, which comprises a switch housing, wherein a control shaft is arranged in the switch housing, the upper end of the control shaft extends out of the switch housing, the lower end of the control shaft is provided with a mounting disc with a quincuncial structure, a movable contact piece with an annular structure is assembled on the mounting disc, a contact is arranged on the movable contact piece, a spring piece connected with the wires is assembled below the movable contact piece, the wires are led out of the switch housing, and four corners in the switch housing are respectively provided with a static contact piece matched with the movable contact piece.

In the two technologies, the movable contact pieces are integrally processed in a bending mode after being punched, so that the production difficulty is greatly reduced, and the production cost is saved.

However, in the two technologies, the movable contact is mounted on the plastic part, and the movable contact and the static contact have the risk of contacting the plastic part in the contact process, so that the movable contact and the static contact have an unstable phenomenon, the initial contact resistance of the switch is increased, and meanwhile, abnormal temperature rise is caused, the switch shaft core burns the melt adhesive or deforms under the combined action of high temperature and friction force, and finally the switch fails.

Therefore, a movable contact structure is provided to solve the above technical problems.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to: provided is a rotary switch which can prevent contact with a plastic part, further prevent abnormal temperature rise from affecting use, and has high stability.

The utility model adopts the technical scheme that: the utility model provides a movable contact structure, includes the body, be equipped with a plurality of contact pieces on the body, a plurality of contact pieces all upwards bend, still include a plurality of transition arc pieces, the transition arc piece is located between two adjacent contact pieces, the edge of transition arc piece stretches out the contact piece.

As a further improvement of the above technical solution, the transition arc piece is formed by punching, and a punching edge is formed between the transition arc piece and the adjacent contact piece.

As a further improvement of the technical scheme, the number of the contact pieces is five, the number of the transition arc pieces is three, the five contact pieces are divided into two groups and are positioned on two sides of the body, and the three transition arc pieces are respectively positioned between each group of contact pieces.

The utility model provides a rotary switch, includes movable contact structure, still includes casing and mould, the casing includes top shell and drain pan, mould the piece and rotate and install in the casing, mould the piece and include the center pin and glue the piece, glue the piece and rotate in the drain pan, the top of center pin stretches out by the top shell, movable contact structure upwards locks on gluing the piece by the bottom of gluing the piece, fixed mounting has a plurality of static contacts in the drain pan, the static contact has elasticity and contacts with the body.

As a further improvement of the technical scheme, a plurality of gaps are formed in the rubber piece, and the contact pieces are inserted into the gaps.

As a further improvement of the technical scheme, connecting lugs are arranged on two sides of the top shell.

As a further improvement of the technical scheme, clamping parts are arranged on two sides of the top shell, the clamping parts are elastic, clamping holes are formed in the clamping parts, clamping blocks are arranged on two sides of the bottom shell, and the clamping blocks are clamped with the clamping holes.

As a further improvement of the technical scheme, the central shaft is sleeved with the torsion spring, and after the central shaft of the rubber piece rotates by a certain angle, two ends of the torsion spring can be abutted with the two mounting blocks.

The beneficial effects of the utility model are as follows: through setting up transition arc piece on the body to make transition arc piece be higher than the arc surface of moulding the bottom, can effectively avoid static contact piece and mould a direct friction when rotating, prevent that the temperature is unusual to rise and become invalid, stability is strong.

Drawings

The utility model is further illustrated by the following description and examples of the embodiments in conjunction with the accompanying drawings.

Fig. 1 is a schematic diagram of a movable contact structure according to the present utility model;

fig. 2 is a schematic diagram illustrating the installation of a movable contact structure according to the present utility model;

FIG. 3 is a schematic diagram of a movable contact in the prior art;

fig. 4 is a schematic diagram of a movable contact mounting structure in the prior art;

fig. 5 is a schematic structural diagram of a rotary switch according to the present utility model;

fig. 6 is a perspective exploded view of a rotary switch according to the present utility model;

fig. 7 is a schematic structural diagram of another embodiment of a top case of a rotary switch according to the present utility model.

In the figure: 1. a body; 11. a contact piece; 12. a transition arc piece; 13. punching a knife edge; 2. a plastic part; 21. a central shaft; 22. a glue piece; 221. a notch; 3. a housing; 31. a top shell; 311. a connecting lug; 312. a threaded tube; 313. a clamping part; 314. a clamping hole; 32. a bottom case; 321. a clamping block; 33. a stationary contact; 34. and (3) a torsion spring.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 to 4, a movable contact structure includes: the body 1 is provided with a plurality of contact pieces 11 on the body 1, and a plurality of contact pieces 11 are all upwards bent, still include a plurality of transition arc pieces 12, and transition arc pieces 12 are located between two adjacent contact pieces 11, and the edge of transition arc piece 12 stretches out of contact piece 11.

Compared with the prior art, the body 1 is buckled on the plastic part 2 upwards from the bottom of the plastic part 2, and the transition arc piece 12 is higher than the arc surface of the bottom of the plastic part, so that the static contact piece 33 can be effectively prevented from directly rubbing the plastic part 2, and the failure caused by abnormal temperature rise can be prevented.

In order to attach to the prior art production process, the production difficulty and cost are reduced to the greatest extent, the transition arc piece 12 is formed by punching, and a punching blade 13 is formed between the transition arc piece 12 and the adjacent contact piece 11.

The number of the contact pieces 11 is five, the number of the transition arc pieces 12 is three, the five contact pieces 11 are divided into two groups and are positioned on two sides of the body 1, and the three transition arc pieces 12 are respectively positioned between each group of contact pieces 11.

Referring to fig. 5 to 7, a rotary switch includes a movable contact structure, and further includes a housing 3 and a plastic member 2, the housing 3 includes a top case 31 and a bottom case 32, the plastic member 2 is rotatably mounted in the housing 3, the plastic member 2 includes a central shaft 21 and a plastic member 22, the plastic member 22 rotates in the bottom case 32, a top end of the central shaft 21 extends from the top case 31, the movable contact structure is fastened on the plastic member 22 upward from a bottom of the plastic member 22, a plurality of stationary contacts 33 are fixedly mounted in the bottom case 32, and the stationary contacts 33 have elasticity and are in contact with the body 1. When the plastic part 2 rotates, the movable contact piece structure is driven to rotate, after the movable contact piece 33 passes over the contact piece 11, the movable contact piece is contacted with the transition arc piece 12, the glue part 22 can not be touched, and the temperature rise can be effectively prevented, so that the normal use is ensured, and the stability is strong.

In order to ensure that the movable contact piece structure and the rubber piece 22 do not rotate relatively, a plurality of notches 221 are formed in the rubber piece 22, and the contact piece 11 is inserted into the notches 221.

The connection lugs 311 are provided at both sides of the top case 31, or a screw pipe 312 is fixedly installed at the top of the top case 31. Thereby being suitable for installation and use in different installation scenes.

For easy installation, two sides of the top shell 31 are provided with clamping parts 313, the clamping parts 313 have elasticity, clamping holes 314 are formed in the clamping parts 313, two sides of the bottom shell 32 are provided with clamping blocks 321, and the clamping blocks 321 are clamped with the clamping holes 314.

The center shaft 21 is sleeved with a torsion spring 34, the top of the rubber piece 22 is provided with two mounting blocks, and two ends of the torsion spring 34 are respectively abutted with the two mounting blocks. After the central shaft rotates to a certain angle, one end of the torsion spring 34 contacts the top case 31, and at this time, a rebound force is generated to rebound.

The contact position of the movable contact piece structure and the static contact piece 33 is connected with the arc joint angle position by metal, so that the movable contact piece structure is stable in contact and the metal is temperature-resistant and wear-resistant when the switch works, and the damage to the plastic part 2 is avoided, and the mechanical and electrical service lives of the switch can be effectively prolonged.

The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).

Claims

1. The utility model provides a movable contact structure, includes body (1), be equipped with a plurality of contact pieces (11) on body (1), a plurality of contact pieces (11) all upwards bend, its characterized in that:

the contact strip also comprises a plurality of transition arc pieces (12), wherein the transition arc pieces (12) are positioned between two adjacent contact pieces (11), and the edges of the transition arc pieces (12) extend out of the contact pieces (11).

2. A movable contact structure as claimed in claim 1, wherein:

the transition arc piece (12) is formed by punching, and a punching knife edge (13) is formed between the transition arc piece (12) and the adjacent contact piece (11).

3. A movable contact structure as claimed in claim 2, wherein:

the number of the contact pieces (11) is five, the number of the transition arc pieces (12) is three, the five contact pieces (11) are divided into two groups and are positioned on two sides of the body (1), and the three transition arc pieces (12) are respectively positioned between each group of contact pieces (11).

4. A rotary switch comprising a movable contact structure according to any one of claims 1-3, characterized in that:

still include casing (3) and mould piece (2), casing (3) are including top shell (31) and drain pan (32), mould piece (2) rotation and install in casing (3), mould piece (2) including center pin (21) and glue piece (22), glue piece (22) rotate in drain pan (32), the top of center pin (21) is stretched out by top shell (31), movable contact piece structure upwards locks on gluing piece (22) by the bottom of gluing piece (22), fixed mounting has a plurality of static contact pieces (33) in drain pan (32), static contact piece (33) have elasticity and contact with body (1).

5. A rotary switch as claimed in claim 4, wherein:

a plurality of gaps (221) are formed in the rubber piece (22), and the contact piece (11) is inserted into the gaps (221).

6. A rotary switch as claimed in claim 5, wherein:

connecting lugs (311) are arranged on two sides of the top shell (31).

7. A rotary switch as claimed in claim 5, characterized in that

The top of the top shell (31) is fixedly provided with a threaded pipe (312).

8. A rotary switch as claimed in claim 5, wherein:

clamping portions (313) are arranged on two sides of the top shell (31), the clamping portions (313) are elastic, clamping holes (314) are formed in the clamping portions (313), clamping blocks (321) are arranged on two sides of the bottom shell (32), and the clamping blocks (321) are clamped with the clamping holes (314).

9. A rotary switch as claimed in claim 6, wherein:

the center shaft (21) is sleeved with a torsion spring (34), two mounting blocks are arranged at the top of the rubber piece (22), and after the center shaft (21) rotates for a certain angle, two ends of the torsion spring (34) can be abutted with the two mounting blocks.