CN206210675U - A kind of multi gear selecting switch support - Google Patents

Abstract

The utility model discloses a kind of multi gear selecting switch support, including housing, the both sides of the housing respectively set two installed parts, it is characterized in that the casing center is provided with one is used to install the axis hole of rotating shaft, the outer wall of the axis hole is connected by three connecting rods with inner walls, the axis hole is provided with three cantilevers, three cantilevers are located axially at the top of axis hole, the root of the cantilever is fixed on housing, the end of the cantilever is hanging, the cantilever is arcuate structure, towards the bending of axis hole direction, it is raised that the inner side of the cantilever free end forms triangular shape towards axis hole direction, the triangular shape convexes to form gear limited support structure, the multi gear selecting switch support is made up of plastic material.A kind of gear bridgeware of good performance is provided the utility model has the advantage of using gear limited support structure, and improve production efficiency and can reduce production cost.

Description

A kind of multi gear selecting switch support

Technical field

The utility model is related to field of switches, specifically says it is a kind of multi gear selecting switch support.

Background technology

Many gear rotary switchs are a kind of conventional electric switches, are capable of achieving the output of different gears.It is of the prior art Many gear rotary switchs it is main between conductive movable contact spring and static contact with realize connecting and disconnecting of the circuit and movable contact spring with not Gearshift is realized with the cooperation of static contact.Movable contact spring realizes the close contact between movable contact spring and static contact by compression spring, and Realize that gear is positioned by compression spring, spin and multiple grooves.Cause out as a result of parts such as compression spring, spin Close complicated integral structure, part it is more and cause assembling inconvenience.Movable contact spring may connect simultaneously during gearshift is rotated simultaneously Connect two static contacts and cause adverse consequences, poor reliability.

A kind of many gear rotary switchs of Application No. 201320245687.6, including upper lid, drain pan and rotary shaft, The rotary shaft is rotated and wears the upper lid, and the upper lid is fixedly connected on the drain pan, and the drain pan has a base plate, described Base plate is provided with center wafer and multiple sides contact, and the center wafer is located on the axis of the rotary shaft, multiple sides Contact is arranged around the center wafer；The medial extremity of the rotary shaft radially extends to form a linkage portion, the linkage portion Draw-in groove is offered towards the one side of the base plate；

Many driving switch also include gear bridgeware；The gear bridgeware elastic compression in the draw-in groove, its Including integrally formed springboard and shell fragment；The springboard is pressed near the direction of the base plate, and the shell fragment is pressed near described The direction of upper lid；The springboard is bar shaped, and along setting radially of the axis of rotation, it has a relative center-side and side end, it is described in Heart end is resisted against the center wafer；The side end forms kink to the draw-in groove inner bending；The shell fragment is from the springboard Center-side extend near side end direction, and be resisted against the upper lid；

The medial surface of the base plate is provided with apical tooth under multiple, around the rotary shaft axial arranging the center wafer with Lower gear groove is formed between the side contact, between two neighboring lower apical tooth；The springboard has one to be located at the side end and institute State the lower gear portion between center-side；When the lower gear portion is located in the lower gear groove, the side end is resisted against described Side contact, the springboard electrically connects the center wafer with the side contact；When the gear bridgeware is in the rotary shaft When rotation makes the springboard be rotated centered on center-side, the lower gear portion is resisted against the lower apical tooth under driving, the shelves Position bridgeware elastic deformation, the side end is separated with the side contact.

In the utility model, gear bridgeware includes integrally formed springboard and shell fragment, using gear bridgeware one With center wafer can be connected side contact by part, at the same using the elasticity between springboard and shell fragment cause springboard and side contact and The connection reliability of center wafer.Although springboard and side contact and the connection reliability of center wafer can be realized using this kind of structure, But springboard and shell fragment generally use metal material in the structure shown here, are more expensive to manufacture, processing procedure is complicated, are difficult reduction and are produced into This.

Utility model content

The purpose of this utility model is to provide a kind of multi gear selecting switch support, and corresponding rotary switch rotating shaft is matched somebody with somebody Close, the effect of gear conversion can be reached, while production cost can be reduced.

To achieve these goals, the technical scheme that the utility model is used is as follows：A kind of multi gear selecting switch support, Including housing, the both sides of the housing respectively set two installed parts, it is characterised in that the casing center is provided with one for pacifying The axis hole of rotating shaft is filled, the outer wall of the axis hole is connected with inner walls by three connecting rods, is provided with around the axis hole Three cantilevers, three cantilevers are located axially at the top of axis hole, and the root of the cantilever is fixed on housing, institute The end for stating cantilever is hanging, and the cantilever is arcuate structure, towards the bending of axis hole direction, the inner side direction of the cantilever free end Axis hole direction forms triangular shape projection, and the triangular shape convexes to form gear limited support structure, the multi gear selecting switch branch Frame is made up of plastic material.

According to preferred embodiment of the present utility model, the gear limited support structure of three cantilevers is along the circumferential direction uniformly divided Cloth is above the periphery of axis hole；The cantilever becomes narrow gradually from root to end, and as the center of circle, described every hangs in the center of circle with axis hole Central angle between the root and end of arm is 85 ~ 100 °.

According to preferred embodiment of the present utility model, the width of the cantilever root and housing junction is with cantilever end most The ratio between narrow place 1：3~1:5, the raised protrusion height of the triangular shape is 1 with the length ratio of cantilever:5 ~ 8, the ratio of both regulations Value can adjust the moment of torsion of rotating shaft gearshift.

According to preferred embodiment of the present utility model, mounting hole, the two of the housing side are respectively provided with each installed part Spacing between individual installed part is more than the spacing between two installed parts of opposite side.

According to preferred embodiment of the present utility model, the plastic material is polyformaldehyde POM.

Coordinate using on multi gear selecting switch support of the present utility model and corresponding rotary switch rotating shaft, using this practicality The elasticity of novel cantilever so that the rotary block in rotary switch rotating shaft is able to across gear limited support under twisting force Structure, so as to realize that gear is changed.The utility model can be utilized hardware traditional in selecting switch with plastic construction Part is substituted, the purpose is to being used to increase production efficiency and reduce production cost.The plastic material of the utility model is typically selected Polyformaldehyde POM, POM intensity, rigidity are high, and elasticity is good, and anti-attrition wearability is good.Its excellent in mechanical performance, specific strength is reachable 50.5MPa, specific stiffness is sufficiently close to up to 2650MPa with metal.The mechanical property of POM varies with temperature small, the impact of POM Intensity is higher.A kind of gear conversion of good performance is provided the utility model has the advantage of using gear limited support structure Part, and improve production efficiency and production cost can be reduced.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is front view of the present utility model.

Fig. 3 is A-A sectional views of the present utility model.

Fig. 4 is the structural representation of the rotary switch rotating shaft corresponding with multi gear selecting switch support of the present utility model.

Specific embodiment

The utility model is explained in detail with reference to the accompanying drawings and examples.

As illustrated, a kind of multi gear selecting switch support, including housing 1, the both sides of the housing 1 respectively set two installations Part 2, it is characterised in that the casing center is provided with one is used to install the axis hole 3 of rotating shaft, and the expansion for extending out is formed on the bottom of axis hole 3 Mouthful, the outer wall of the axis hole 3 is connected by three connecting rods 4 with inner walls, and the axis hole is provided with three cantilevers 5, three cantilevers 5 are located axially at the top of axis hole 3, and the root of the cantilever 5 is fixed on housing 1, described The end of cantilever 5 is hanging, and the cantilever 5 is arcuate structure, towards the bending of the direction of axis hole 3, the inner side court of the free end of the cantilever 5 Triangular shape projection 6 is formed to axis hole direction, the triangular shape raised 6 forms gear limited support structure, and the multi gear selection is opened Support is closed to be made up of plastic material.

According to preferred embodiment of the present utility model, the gear limited support structure of three cantilevers 5 is along the circumferential direction uniform It is distributed in the periphery top of axis hole 3, three connecting rods 4 and three interval settings of cantilever 5；The cantilever 5 from root to end by Gradual change is narrow, and as the center of circle, the central angle between the root and end of the every cantilever 5 is 85 ~ 100 ° to the center of circle with axis hole 3.

According to preferred embodiment of the present utility model, width and the end of cantilever 5 of the root of the cantilever 5 and housing junction The ratio between most narrow place 1：3~1:5.Through experiment, the ratio between regulation stall limited support structure height and jib-length can be adjusted The moment of torsion of section rotating shaft gearshift.According to preferred embodiment of the present utility model, protrusion height and the cantilever 5 of the triangular shape projection 6 Length ratio be 1:5 ~ 8, under the ratio, the moment of torsion of the rotating shaft gearshift belongs to suitable scope, can substantially experience The resistance of gearshift, resistance is unlikely to again influences greatly very much operability.In order to ensure the degree of lubrication of gearshift, preferably described triangle The corner angle of shape projection 6 is preferably 110 ~ 140 °.

According to preferred embodiment of the present utility model, mounting hole, the two of the housing side are respectively provided with each installed part 2 More than the spacing between two installed parts of opposite side, ratio between two is 1.4 ~ 1.6 to spacing between individual installed part:1.Due to two Spacing between the installed part of side is different, and the directionality for determining to install is easy to when multi gear selecting switch support is installed, and is difficult hair Raw setup error.

According to preferred embodiment of the present utility model, the plastic material is polyformaldehyde POM.

The rotary switch rotating shaft corresponding with multi gear selecting switch support of the present utility model is as shown in figure 4, the rotation is opened Closing rotating shaft includes a rotating shaft 7, and the close root position of rotating shaft 7 is provided with a cirque structure 8, the cirque structure 8 Outer circumferential walls are provided with several rotary blocks being engaged with the gear limited support structure of multi gear selecting switch support cantilever 9。

Apply torsion in rotating shaft, rotary block forms rotating tendency under twisting force, before gear limited support structure The rotary block of side produces thrust to gear limited support structure, due to the elasticity of cantilever, in rotary block to the spacing branch of gear In the presence of the thrust of support structure, cantilever is deformed upon so that rotary block is able to across gear limited support structure, and rotation is extremely The rear side of gear limited support structure, and next rotary block is located at the front side of gear limited support structure.

Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to Assert that the utility model specific implementation is confined to above-mentioned these explanations.For the common skill of the utility model art For art personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should It is considered as belonging to protection domain of the present utility model.

Claims (5)

1. a kind of multi gear selecting switch support, including housing, the both sides of the housing respectively set two installed parts, it is characterised in that The casing center is provided with one is used to install the axis hole of rotating shaft, and the outer wall of the axis hole passes through three connecting rods and inner walls Connection, three cantilevers are provided with around the axis hole, and three cantilevers are located axially at the top of axis hole, described The root of cantilever is fixed on housing, and the end of the cantilever is hanging, and the cantilever is arcuate structure, curved towards axis hole direction Song, the inner side of the cantilever free end forms triangular shape projection towards axis hole direction, and it is spacing that the triangular shape convexes to form gear Supporting construction, the multi gear selecting switch support is made up of plastic material.

2. multi gear selecting switch support as claimed in claim 1, it is characterised in that three gear limited support structures of cantilever It is distributed uniformly and circumferentially above the periphery of axis hole；The cantilever becomes narrow gradually from root to end, with the center of circle of axis hole It is the center of circle, the central angle between the root and end of the every cantilever is 85 ~ 100 °.

3. multi gear selecting switch support as claimed in claim 1, it is characterised in that the cantilever root and housing junction The ratio between width and the most narrow place of cantilever end 1：3~1:5, the raised protrusion height of the triangular shape is 1 with the length ratio of cantilever:5 ~8。

4. multi gear selecting switch support as claimed in claim 1, it is characterised in that be respectively provided with mounting hole on each installed part, Spacing between two installed parts of the housing side is more than the spacing between two installed parts of opposite side.

5. multi gear selecting switch support as claimed in claim 1, it is characterised in that the plastic material is polyformaldehyde POM.