CN2340085Y

CN2340085Y - Enclosed rotary switch

Info

Publication number: CN2340085Y
Application number: CN 97245786
Authority: CN
Inventors: 吴达仁; 何权标; 何荣标
Original assignee: YONGLIAN ELECTRIC-APPLIANCE PRODUCTS FACTORY ZHONGSHAN CITY
Current assignee: YONGLIAN ELECTRIC-APPLIANCE PRODUCTS FACTORY ZHONGSHAN CITY
Priority date: 1997-10-14
Filing date: 1997-10-14
Publication date: 1999-09-22
Anticipated expiration: 2007-10-14

Abstract

The utility model relates to an enclosed rotary switch, which solves the defects of complicated structure, difficult assembly, poor electrical contact, easy contamination by dust and short service life. The utility model comprises a housing, a housing cover and a switch shaft, a public contact piece and a stepping contact piece are arranged on the side wall of a concave cavity of the housing. A rotary block of the switch shaft is provided with a spring through hole, and a spring is arranged in the spring through hole. The contacts on the both ends of the spring can support the side wall of the concave cavity. The top end of the switch shaft is provided with a top spring hole which is communicated with the spring through hole, and a top spring is arranged in the top spring hole. An interlocking contact piece is arranged between the top spring and the housing cover. The utility model has the advantages of compact structure, good sealing, good electric appliance safety performance, easy assemblage, reliable electric contact and long service life.

Description

The sealing rotary switch

The utility model relates to a kind of appliance switch, particularly the sealing rotary switch that is made of housing, cap, switch shaft.

Rotation multithrow switch so far generally as shown in fig. 1, comprise screw 1., the stepping contact 2., base plate 3., rivet 4., public contact 5., movable contact spring 6., the interlocking contact 7., spring 8., switch shaft 9., steel ball 10., housing .Movable contact spring is installed on the switch shaft, and stepping contact, public contact are buckled on the base plate, and public contact is an arcuation, is flattened on the base plate.Wherein said movable contact spring can be in company with switch shaft clockwise or inverse clock rotation.Touching first and rotate on the movable contact spring with switch shaft, can be respectively be buckled in base plate on several stepping contacts contact, another then remains with the public contact of arcuation and contacts, the terminals folder of interlocking contact fixes between base plate and the housing, ring portion position, garden then is to be inserted in switch shaft, keeps contacting with movable contact spring.When movable contact spring rotates to OO ' position among Fig. 2, switch is in dissengaged positions, and when movable contact spring rotates to BB ' position, electric current is just through the stepping contact at the public contact of arcuation, movable contact spring, place, conducting B position, form the loop through main motor again, make fan be in B shelves ventilation state.If when movable contact spring rotated to AA ' or CC ' position, main motor was in A shelves, C shelves state respectively.And the function of shaking the head of fan is then come interlocked control by the interlocking contact, and when promptly having movable contact spring only and being in the arbitrary position of AA ', BB ', CC ', the interlocking contact can be charged, adds head-shaking switch K closure, i.e. conducting head-shaking motor loop; And when movable contact spring was in OO ' position, the contact of then interlocking was not charged, and head-shaking motor not conducting of loop reaches the interlocking purpose.The positioning of rotating of switch shaft is the regular polygon that utilizes the housing inner chamber, and when switch shaft whenever rotates a certain angle, the steel ball in the switch shaft is positioned at certain salient position of regular polygon under the effect of spring ejecting force.There is following shortcoming in the switch of this structure: when (1) adopts traditional phenolic laminated sheet when base plate, and the spin friction power of movable contact spring, the scratch base plate causes loose contact easily; If base plate is used epoxy resin bonded fiber instead, then cost of manufacture is higher.(2) expose charged contact many places on the base plate, easily advances dust, and electrical safety is poor.(3) each contact is buckled on the base plate, and adopts screw fastening, the assembly technology complexity.(4) Dian connection is to lean on the copper sheet elastic force of movable contact spring itself that contact is linked to each other with other contacts, and grown service time, and the copper sheet distortion makes its elastic force reduce, and causes loose contact.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art part, provides a kind of and electrically contacts reliably, assembling easily, enclosed sealing rotary switch.

For realizing the purpose of this utility model, described sealing rotary switch comprises housing, cap, switch shaft, public contact and stepping contact are arranged on the sidewall of housing cavity, on the switch block of switch shaft, be provided with the spring through hole, spring is arranged in the spring through hole, can withstand on the sidewall of cavity at the contact of both ends of the spring.

Be provided with spring hole, top on described switch shaft top, spring hole, top communicates with the spring through hole, and the top spring is arranged in the spring hole, top, and the interlocking contact is arranged between top spring and the cap.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the structural representation of existing rotary switch.

The electrical schematic that Fig. 2 is connected with ventilating fan for existing rotary switch.

Fig. 3 is the structural representation of the utility model sealing rotary switch.

Fig. 4 is the partial sectional view of Fig. 3 switch shaft at the spring place.

Below in conjunction with accompanying drawing, one of them embodiment is described in further detail to the utility model:

As shown in FIG., the utility model sealing rotary switch includes housing (6), cap (1), switch shaft (3), public contact (4) and stepping contact (5) are arranged on the sidewall of cavity (10) in the housing (6), because cavity (10) has five re-entrant angles in the housing (6), in three re-entrant angles in the middle of stepping contact (5) then is arranged on, and public contact (4) is owing to there is a circular-arc sheet metal, and is arranged on the circular arc wall at the symmetrical seat of three stepping contacts (5).Be provided with spring through hole (12) on the switch block of switch shaft (3), spring (7) is arranged in the spring through hole (12), and the contact (8) at spring (7) two ends can withstand on the sidewall of cavity (10).When switch shaft (3) rotates, contact on the switch block (8) can withstand in the re-entrant angle, not only can make switch shaft (3) and housing (6) relative positioning, but also make the stepping contact (5) in the re-entrant angle be communicated with public contact (4) by spring (7), this elastic force of spring that utilizes makes contact contact with contact, contacts with copper sheet than simple copper sheet to have more the good electrical contact performance.In the present embodiment, because three re-entrant angles are arranged, intrinsic third gear switch state, and two other re-entrant angle is the orientation angle of switch off state.Be provided with spring hole, top (1 3) on described switch shaft (3) top, spring hole, top (13) communicates with spring through hole (12), top spring (2) is arranged in the spring hole, top (13), contact with spring (7), interlocking contact (9) is arranged between top spring (2) and the cap (1), makes interlocking contact (9) to keep being communicated with for a long time with spring (7) and contact (8) by top spring (2).On any one gear in third gear, interlocking contact (9) all is communicated with public contact (4) and place stepping contact (5).Nook at cavity (10) sidewall is provided with the draw-in groove (14) that is used for fixing public contact (4) and stepping contact (5), and public contact (4) and stepping contact (5) bending place are provided with breach (17).When mounted, only public contact (4) and stepping contact (5) need be inserted in the draw-in groove (14), breach this moment (17) just in time is in the bending place, gently contact is depressed to side with have gentle hands, just can install contact very quickly.Public contact (4) also is to utilize the arc limit of housing inner chamber and two ends draw-in groove (14) that contact is overlayed into arcuation when packing housing into, thereby realizes that contact does not have the type of rolling, and has simplified manufacture craft.Described contact (8) is a copper sheathing, and the two ends of described spring (7) can be hidden in the copper sheathing.When mounted, be convenient to the assembling of contact (8), when electricity is led, good electrical contact arranged.The lid limit of described cap (1) is provided with hook (15), is provided with hook hole (16) in the side correspondence of housing (6), and hook (15) can pass hook hole (16) and be hooked on the housing (6) very convenient assembling.According to actual operating position, this switch can be designed for the 2-5 shelves speed regulating control of fan, and be used to shake the head, the break-make control of indicator light or decorative lamp.

The utility model has compact conformation than rotary switch of the prior art, sealing, security appliance performance Good, easily assembling electrically contacts reliably the advantage of long service life.

Claims

1, a kind of sealing rotary switch, comprise housing (6), cap (1), switch shaft (3), it is characterized in that public contact (4) and stepping contact (5) are arranged on the sidewall of housing (6) cavity (10), on the switch block of switch shaft (3), be provided with spring through hole (12), spring (7) is arranged in the spring through hole (12), and the contact (8) at spring (7) two ends can withstand on the sidewall of cavity (10).

2, sealing rotary switch according to claim 1, it is characterized in that being provided with spring hole, top (13) on described switch shaft (3) top, spring hole, top (13) communicates with spring through hole (12), top spring (2) is arranged in the spring hole, top (13), and interlocking contact (9) is arranged between top spring (2) and the cap (1).

3, sealing rotary switch according to claim 1 and 2 is characterized in that being provided with the draw-in groove (14) that is used for fixing public contact (4) and stepping contact (5) at the orientation angle place of cavity (10) sidewall.

4, sealing rotary switch according to claim 1 and 2 is characterized in that described contact (8) is a copper sheathing, and the two ends of described spring (7) can be hidden in the copper sheathing.

5, sealing rotary switch according to claim 3 is characterized in that described contact (8) is a copper sheathing, and the two ends of described spring (7) can be hidden in the copper sheathing.

6, sealing rotary switch according to claim 1 and 2 is characterized in that the lid limit of described cap (1) is provided with hook (15), is provided with hook hole (16) in the side correspondence of housing (6), and hook (15) can pass hook hole (16) and be hooked on the housing (6).

7, sealing rotary switch according to claim 3 is characterized in that the lid limit of described cap (1) is provided with hook (15), is provided with hook hole (16) in the side correspondence of housing (6), and hook (15) can pass hook hole (16) and be hooked on the housing (6).

8, sealing rotary switch according to claim 4 is characterized in that the lid limit of described cap (1) is provided with hook (15), is provided with hook hole (16) in the side correspondence of housing (6), and hook (15) can pass hook hole (16) and be hooked on the housing (6).

9, sealing rotary switch according to claim 1 and 2 is characterized in that described public contact (4) and stepping contact (5) bending place are provided with breach (17).

10, sealing rotary switch according to claim 3 is characterized in that described public contact (4) and stepping contact (5) bending place are provided with breach (17).