CN208622642U - A kind of depression bar assembly of high current appliance switch - Google Patents

Abstract

The utility model discloses a kind of depression bar assemblies of high current appliance switch, including plunger, the bottom end of the plunger offers fixing slot, the top outer wall of the fixing slot is fixedly connected with protruding block, the external annulus fixing sleeve of the protruding block is equipped with C spring, the bottom end internal ring wall of the C spring is fixedly connected with compression bar by truncated cone-shaped protrusion, and the bottom end external annulus of the compression bar and the bottom end internal ring wall of fixing slot are slidably connected, the fixing slot side of the plunger bottom end is communicated with guide groove, and the compression bar is extended to inside guide groove with the raised vertical side top outer wall of truncated cone-shaped and is slidably connected with the internal ring wall of guide groove.The utility model relates to appliance switch relevant device component technology fields.The depression bar assembly of the high current appliance switch, improves the reliability of on-off switching, while increasing the pressure that contact connects moment, effectively prevents the phenomenon that melting welding and ablation occur between switch contact.

Description

A kind of depression bar assembly of high current appliance switch

Technical field

The utility model relates to appliance switch relevant device component technology field, specially a kind of high current appliance switch Depression bar assembly.

Background technique

For the appliance switch of high current, if regarding terminal fulcrum and movable contact spring as a simple lever mould Type.It connects moment, it is assumed that the pressure (power) that compression bar applies movable contact spring occurs and is just overlapped with position of the fulcrum or both At a distance of very little, i.e., the case where power arm can be considered zero, then no matter compression bar applies great pressure, movable contact spring (thick stick to movable contact spring Bar) head contact at suffered power (resistance) also to be almost nil.At this time because between contact initial pressure it is too small, between contact Contact resistance is excessive, more serious fever phenomenon will be generated when high current (especially dash current) passes through, to draw Play the switch failures phenomenons such as contact melting welding.

Utility model content

(1) the technical issues of solving

In view of the deficiencies of the prior art, the utility model provides a kind of depression bar assembly of high current appliance switch, improves The reliability of on-off switching, while increasing the pressure that contact connects moment, effectively prevent the melting welding and burning between switch contact Lose phenomenon.

(2) technical solution

In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of high current appliance switch Depression bar assembly, including plunger, the bottom end of the plunger offers fixing slot, and the top outer wall of the fixing slot is solid Surely it is connected with protruding block, the external annulus fixing sleeve of the protruding block is equipped with C spring, and the bottom end internal ring wall of the C spring is logical It crosses truncated cone-shaped protrusion and is fixedly connected with compression bar, and the bottom end external annulus of the compression bar and the bottom end internal ring wall of fixing slot slide Connection, the compression bar positioned at plunger body is L-shaped, and the fixing slot side of the plunger bottom end is communicated with guiding Slot, and the compression bar extends to the inner ring inside guide groove and with guide groove with the raised vertical side top outer wall of truncated cone-shaped Wall is slidably connected, and the compression bar is located at the part inside guide groove in up big and down small planform, and the compression bar is located at Bottom end outer wall outside fixing slot is fixedly connected with movable contact spring, and the bottom of the movable contact spring one end and plunger far from compression bar End protrusion is slidably connected.

Preferably, the protruding block is in " ten " font.

Preferably, the bottom end outer wall of the protruding block is oblique.

Preferably, the external annulus in the middle position of the fixing slot passes through the outer of fixed fixture block and compression bar middle position Ring wall snaps connection.

Preferably, the top inner wall of the fixing slot is fixedly connected with the top outer wall of C spring, and the fixation The slanted angle α range of the top inner wall of hole slot is 4 ° -10 °.

Preferably, plane angle with horizontal plane range of the compression bar with truncated cone-shaped protrusion is 4 ° -10 °.

(3) beneficial effect

The utility model provides the depression bar assembly of high current appliance switch.Have it is following the utility model has the advantages that

(1), the depression bar assembly of the high current appliance switch, by the depression bar assembly of high current appliance switch, including plunger, The bottom end of plunger offers fixing slot, and the top outer wall of fixing slot is fixedly connected with protruding block, and the external annulus of protruding block is solid Surely it is arranged with C spring, the bottom end internal ring wall of C spring is fixedly connected with compression bar, and the bottom end outer ring of compression bar by truncated cone-shaped protrusion Wall and the bottom end internal ring wall of fixing slot are slidably connected, and the compression bar positioned at plunger body is L-shaped, the fixing slot of plunger bottom end Side is communicated with guide groove, and the compression bar side top outer wall vertical with truncated cone-shaped protrusion extend to inside guide groove and with guiding The internal ring wall of slot is slidably connected, and compression bar is located at the part inside guide groove in up big and down small planform, and compression bar, which is located at, to be fixed Bottom end outer wall outside hole slot is fixedly connected with movable contact spring, and the bottom end protrusion sliding of movable contact spring one end and plunger far from compression bar Connection, achieved the purpose that reduce contact between electro-fusion welding a possibility that, the new structural design is reasonable, compact layout, except provide Outside conventional up and down motion, main function is to be simultaneously provided in horizontal direction and vertical direction to movable contact spring overturning moment Component have certain pressure between dynamic/static contact so that movable contact spring is quickly overturn, and guarantees switch connection moment, reduce Contact resistance between contact reduces fever, using the depression bar assembly that can be swung by designated magnitude, promotes movable contact spring reversal rate While eliminate mechanical dead point, provide pressure between reliable contact for switch connection moment, while reducing or eliminating contact Between bounce be detached from, thus reduce electric arc generation, thus a possibility that reducing electro-fusion welding between contact.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the utility model partial structurtes schematic cross-sectional view；

Fig. 3 is that the utility model left side angle analysis indicates schematic diagram；

Fig. 4 is the utility model C spring original state elastic force analysis chart；

Fig. 5 is the utility model left side schematic structural cross-sectional view；

Fig. 6 is the utility model right side schematic structural cross-sectional view；

Fig. 7 is the utility model C spring in ON momentary status schematic diagram；

Fig. 8 is the utility model C spring in ON moment elastic force analysis chart.

In figure: 1 compression bar, 2 C springs, 3 plungers, 4 fixing slots, 5 protruding blocks, 6 fixed fixture blocks, 7 movable contact springs, 8 truncated cone-shapeds Protrusion, 9 guide grooves.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-8 is please referred to, the utility model provides a kind of technical solution: a kind of depression bar assembly of high current appliance switch, Including plunger 3, the bottom end of plunger 3 offers fixing slot 4, and the top outer wall of fixing slot 4 is fixedly connected with protruding block 5, convex Bittiness 5 external annulus fixing sleeve is equipped with C spring 2, and the bottom end internal ring wall of C spring 2 is fixedly connected with compression bar by truncated cone-shaped protrusion 8 1, the synergy of protruding block 5 and truncated cone-shaped protrusion 8 provides guiding and limit property for movement of the C spring 2 in plunger 3；And it presses The bottom end external annulus of bar 1 is slidably connected with the bottom end internal ring wall of fixing slot 4, and the compression bar 1 inside plunger 3 is L-shaped, column 4 side of fixing slot for filling in 3 bottom ends is communicated with guide groove 9, and compression bar 1 prolongs with the raised 8 vertical side top outer walls of truncated cone-shaped It extends to 9 inside of guide groove and is slidably connected with the internal ring wall of guide groove 9, when compression bar 1 moves, guide groove 9 is to 1 upper and lower of compression bar Upward movement is oriented to；Compression bar 1 is located at the part inside guide groove 9 in up big and down small planform, and compression bar 1 is located at solid Determine the bottom end outer wall outside hole slot 4 and is fixedly connected with movable contact spring 7, and the bottom end of movable contact spring 7 one end far from compression bar 1 and plunger 3 Protrusion is slidably connected.

The protruding block 5 is in " ten " font.

The bottom end outer wall of protruding block 5 is oblique, as a guide frame, so that C spring 2 is smoothly packed into " ten " font convex Bittiness 5.

The external annulus in the middle position of fixing slot 4 passes through fixed fixture block 6 and the external annulus in 1 middle position of compression bar buckles company It connects, prevents compression bar 1 and C spring 2 when installation from falling.

The top inner wall of fixing slot 4 is fixedly connected with the top outer wall of C spring 2, and the top inner wall of fixing slot 4 Slanted angle α range is 4 ° -10 °.

Plane angle with horizontal plane range of the compression bar 1 with truncated cone-shaped protrusion 8 is 4 ° -10 °.

In use, C spring 2 is first inserted into the fixing slot 4 of 3 bottom end of plunger after smearing lubricating grease when starting installation process, Thereafter the compression bar 1 of lubricating grease has been smeared in insertion；Snapping connection for fixture block 6 and compression bar 1 is wherein fixed, pressure when preventing from installing is played The effect that bar 1 and C spring 2 are fallen；After installation process, in use, when compression bar 1 moves, guide groove 9 is to compression bar Movement in 1 up and down direction is oriented to, and is in up big and down small structure with the part of 3 guide groove of plunger cooperation on compression bar 1, when It, can be rotating around the right or the circular arc of left upper under the effect of the frictional force of compression bar 1 and movable contact spring 7 when 3 side-to-side movement of plunger Supporting point makees swinging for certain amplitude in guide groove 9；Switch ON process position as shown in Figure 7 is driven, plunger 3 is transported to the right It moves during driving switch ON, by friction effects, 1 clockwise oscillation of compression bar distorts 2 lower part of C spring to the left, and amplitude is such as Curve B shown in Fig. 7, when the overturning moment of movable contact spring 7,2 elastic force schematic diagram of C spring as shown in Figure 8, in the horizontal direction, C spring 2 Elastic force summation in horizontal direction is FB1+N1, and direction is horizontally to the right；Similarly, elastic force summation in the vertical direction is also two perpendicular Straight component sum total is FB2+N2, and direction straight down, while this overturns movable contact spring quickly, also provides between contact Enough pressure；And during the work time, elastic force N can be generated when as shown in figure 4, C spring 2 is by compression certain distance, which can The component N1 in a horizontal direction is resolved into, this component is conducted to compression bar 1, is cooperated corresponding movable contact spring 7, can be helped movable contact spring 7 quickly overturn from OFF to ON, eliminate the mechanical dead point that movable contact spring is swung；The component N2 on vertical direction then provides portion simultaneously Contact initial pressure when switch-dividing is connected, to reduce contact melting welding and ablation phenomen；The new structural design is reasonable, layout Compact, in addition to providing conventional up and down motion, main function is to be simultaneously provided in level side to movable contact spring overturning moment To and the component of vertical direction have one between dynamic/static contact so that movable contact spring is quickly overturn, and guarantees switch connection moment Constant-pressure reduces contact resistance between contact, reduces fever, using the depression bar assembly that can be swung by designated magnitude, is promoted dynamic Mechanical dead point is eliminated while contact reversal rate, pressure between reliable contact is provided for switch connection moment, subtracts simultaneously Less or spring disengaging between contact is eliminated, so that electric arc generation is reduced, thus a possibility that reducing electro-fusion welding between contact.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions.By sentence " element limited including one ..., it is not excluded that There is also other identical elements in the process, method, article or apparatus that includes the element ".

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (6)

1. a kind of depression bar assembly of high current appliance switch, including plunger (3), it is characterised in that: the bottom end of the plunger (3) It offers fixing slot (4), the top outer wall of the fixing slot (4) is fixedly connected with protruding block (5), the protruding block (5) external annulus fixing sleeve is equipped with C spring (2), and the bottom end internal ring wall of the C spring (2) is fixed by truncated cone-shaped raised (8) It is connected with compression bar (1), and the bottom end external annulus of the compression bar (1) and the bottom end internal ring wall of fixing slot (4) are slidably connected, institute The compression bar (1) for being located at plunger (3) inside stated is L-shaped, and fixing slot (4) side of described plunger (3) bottom end is communicated with Guide groove (9), and to extend to guide groove (9) internal for the compression bar (1) and truncated cone-shaped raised (8) vertical side top outer wall And be slidably connected with the internal ring wall of guide groove (9), the compression bar (1) is located at the internal part of guide groove (9) in up big and down small Planform, the compression bar (1) is located at the external bottom end outer wall of fixing slot (4) and is fixedly connected with movable contact spring (7), and institute The bottom end protrusion of the movable contact spring (7) stated one end and plunger (3) far from compression bar (1) is slidably connected.

2. a kind of depression bar assembly of high current appliance switch according to claim 1, it is characterised in that: the protruding block It (5) is in " ten " font.

3. a kind of depression bar assembly of high current appliance switch according to claim 2, it is characterised in that: the protruding block (5) bottom end outer wall is oblique.

4. a kind of depression bar assembly of high current appliance switch according to claim 1, it is characterised in that: the fixation hole The external annulus in the middle position of slot (4) is snapped connection by fixed fixture block (6) and the external annulus in compression bar (1) middle position.

5. a kind of depression bar assembly of high current appliance switch according to claim 1, it is characterised in that: the fixation hole The top inner wall of slot (4) is fixedly connected with the top outer wall of C spring (2), and the top inner wall of the fixing slot (4) inclines Oblique angle α range is 4 ° -10 °.

6. a kind of depression bar assembly of high current appliance switch according to claim 5, it is characterised in that: the compression bar (1) the plane angle with horizontal plane range with truncated cone-shaped raised (8) is 4 ° -10 °.