CN214542074U

CN214542074U - Moving contact assembly

Info

Publication number: CN214542074U
Application number: CN202120924559.9U
Authority: CN
Inventors: 郑旭斌; 彭南宁; 陈星�
Original assignee: Zhejiang Great Electrical Co ltd
Current assignee: Zhejiang Great Electrical Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-10-29
Anticipated expiration: 2031-04-30

Abstract

A movable contact assembly comprises a first mounting block, a movable contact spring riveted with the first mounting block and a movable contact arranged at one end of the movable contact spring, which is far away from the first mounting block, wherein two ends of the movable contact respectively protrude out of two sides of the movable contact spring; the movable reed comprises a main reed, a first side reed and a second side reed which are respectively positioned at two sides of the main reed; the middle part of the top end of the main reed is provided with a mounting lug in a protruding way, a first clamping hole is formed in the mounting lug, a first support leg is arranged at one side of the mounting lug in the protruding way at the top end of the main reed, and a second support leg is arranged at the other side of the mounting lug in the protruding way; the first support leg and the second support leg incline in the direction away from each other. So can produce the contact pressure who promotes moving contact and static contact, increase two-way resilience force simultaneously, reduce action voltage and simple structure, cost are lower.

Description

Moving contact assembly

Technical Field

The utility model relates to a low-voltage apparatus technical field, especially a moving contact subassembly.

Background

The double-static contact relay is provided with a static contact component respectively in front of and behind the moving contact component, and the moving contact component can be selectively abutted against one of the static contact components. The existing relay has no structure capable of generating contact pressure for promoting the contact between the moving contact and the fixed contact. The action voltage of the relay can be reduced by improving the resilience force of the moving contact component. In the single static contact relay, the resilience force of the moving contact component can be improved in a single direction; for a double-static contact relay, if a unidirectional resilience force in one direction is increased, the resilience force in the opposite direction cannot be increased.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a can produce the contact pressure who promotes moving contact and static contact, increase two-way resilience force simultaneously, reduce action voltage and simple structure, the lower moving contact subassembly of cost to solve above-mentioned problem.

A movable contact assembly comprises a first mounting block, a movable contact spring riveted with the first mounting block and a movable contact arranged at one end of the movable contact spring, which is far away from the first mounting block, wherein two ends of the movable contact respectively protrude out of two sides of the movable contact spring; the movable reed comprises a main reed, a first side reed and a second side reed which are respectively positioned at two sides of the main reed; the middle part of the top end of the main reed is provided with an arc-shaped mounting lug in a protruding manner, a first clamping hole is formed in the mounting lug, a first support leg is arranged at one side of the mounting lug in the protruding manner at the top end of the main reed, and a second support leg is arranged at the other side of the mounting lug in the protruding manner; the first support leg and the second support leg incline towards the direction away from each other; the top of the first side reed is provided with a second clamping hole corresponding to the first clamping hole; the top of the second side reed is provided with a third clamping hole corresponding to the first clamping hole; the middle part of moving contact is sunken to be provided with the draw-in groove, and the moving contact passes first joint hole, second joint hole and third joint hole, and the installation lug is arranged in the draw-in groove.

Furthermore, a first avoidance opening is formed in the position, corresponding to the first supporting leg, of the top of the first side spring plate.

Furthermore, a second avoidance opening is formed in the position, corresponding to the second supporting leg, of the top of the second side spring plate.

Further, the top end of the first side spring leaf is vertically connected with an inner abutting block.

Further, the top end of the second side spring leaf is vertically connected with an outer abutting block, and the height of the top end of the second side spring leaf is larger than that of the top end of the first side spring leaf.

Further, a third supporting leg protrudes upwards from one side, far away from the second supporting leg, of the second side spring leaf; one side of the first side spring leaf, which is far away from the first supporting leg, is provided with a fourth supporting leg in an upward protruding manner.

Furthermore, one side of the first mounting block is provided with a plurality of riveting lugs in a protruding mode, and the bottom ends of the main reed, the first side reed and the second side reed are all riveted with the riveting lugs.

Compared with the prior art, the movable contact component of the utility model comprises a first mounting block, a movable contact spring riveted with the first mounting block and a movable contact arranged at one end of the movable contact spring far away from the first mounting block, wherein two ends of the movable contact are respectively protruded out of two sides of the movable contact spring; the movable reed comprises a main reed, a first side reed and a second side reed which are respectively positioned at two sides of the main reed; the middle part of the top end of the main reed is provided with an arc-shaped mounting lug in a protruding manner, a first clamping hole is formed in the mounting lug, a first support leg is arranged at one side of the mounting lug in the protruding manner at the top end of the main reed, and a second support leg is arranged at the other side of the mounting lug in the protruding manner; the first support leg and the second support leg incline towards the direction away from each other; the top of the first side reed is provided with a second clamping hole corresponding to the first clamping hole; the top of the second side reed is provided with a third clamping hole corresponding to the first clamping hole; the middle part of moving contact is sunken to be provided with the draw-in groove, and the moving contact passes first joint hole, second joint hole and third joint hole, and the installation lug is arranged in the draw-in groove. So can produce the contact pressure who promotes moving contact and static contact, increase two-way resilience force simultaneously, reduce action voltage and simple structure, cost are lower.

Drawings

Embodiments of the present invention are described below with reference to the accompanying drawings, in which:

fig. 1 is a schematic perspective view of a dual-static contact relay.

Fig. 2 is an exploded schematic view of a double stationary contact relay.

Fig. 3 is a partial schematic view of a dual-static contact relay.

Fig. 4 is an exploded view of the moving contact assembly of fig. 3.

Fig. 5 is a perspective view of the slider in fig. 3.

Fig. 6 is a perspective view of the limiting frame in fig. 1.

Fig. 7 is a top view schematic of a slider and moving contact assembly.

Figure 8 is a schematic perspective view of another embodiment of the movable contact assembly.

Detailed Description

The following describes in further detail specific embodiments of the present invention based on the drawings. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

Referring to fig. 1 and fig. 2, the dual static contact relay with a movable contact assembly provided by the present invention includes a housing, an electromagnetic assembly 10 located in the housing, a rotating armature 20 located on one side of the electromagnetic assembly 10 and rotatably connected to the housing, a slider 30 connected to one end of the rotating armature 20, a movable contact assembly 40 connected to the slider 30, a first static contact assembly 50 located on a first side of the movable contact assembly 40, a second static contact assembly 60 located on a second side of the movable contact assembly 40, and a limiting frame 70 for limiting and fixing the movable contact assembly 40, the first static contact assembly 50, and the second static contact assembly 60.

Referring to fig. 3, a first through hole 31 and a second through hole 32 are spaced apart from one end of the slider 30 away from the electromagnetic assembly 10.

A first fixed contact 51 is provided to protrude from a distal end of the first fixed contact assembly 50 toward a side of the movable contact assembly 40, and a second fixed contact 61 is provided to protrude from a distal end of the second fixed contact assembly 60 toward a side of the movable contact assembly 40.

The utility model provides a moving contact subassembly 40 includes first installation piece 41, with the movable contact spring 42 of first installation piece 41 riveting and set up in the moving contact 43 of the one end that first installation piece 41 was kept away from to movable contact spring 42. Two ends of the movable contact 43 respectively protrude out of two sides of the movable spring 42.

A first leg 441 and a second leg 442 are provided at an end of movable spring 42 remote from first mounting block 41 so as to protrude at an interval, first leg 441 is disposed to incline from movable spring 42 toward first stationary contact assembly 50, and second leg 442 is disposed to incline from movable spring 42 toward second stationary contact assembly 60. The first leg 441 is disposed in the first through hole 31, and the second leg 442 is disposed in the second through hole 32.

The slider 30 is provided with a third through hole 33 between the first through hole 31 and the second through hole 32, and an operation portion 34 is protruded from the middle of the top surface of the slider 30 for manual operation.

Referring to fig. 4, a plurality of riveting protrusions 411 are protruded from one side of the first mounting block 41. The movable spring 42 includes a main spring 421, and a first side spring 422 and a second side spring 423 respectively located at two sides of the main spring 421. The bottom ends of main reed 421, first side reed 422, and second side reed 423 are riveted with riveting convex block 411.

Circular-arc-shaped mounting lug 4211 is protrudingly arranged in the middle of the top end of main reed 421, first clamping hole 4212 is arranged in mounting lug 4211, first support leg 441 is connected to the top end of main reed 421 and is located on one side of mounting lug 4211, and second support leg 442 is connected to the top end of main reed 421 and is located on the other side of mounting lug 4211.

The top of the first side spring piece 422 is provided with a second clamping hole 4221 corresponding to the first clamping hole 4212, the top of the first side spring piece 422 is provided with a first avoidance opening 4222 corresponding to the position of the first support leg 441, and the top end of the first side spring piece 422 is vertically connected with an inner abutting block 4223. The inner abutment 4223 abuts against the bottom surface of the slider 30.

The top of the second side spring piece 423 is provided with a third clamping hole 4231 corresponding to the first clamping hole 4212, the top of the second side spring piece 423 is provided with a second escape opening 4232 corresponding to the second supporting leg 442, and the top end of the second side spring piece 423 is perpendicularly connected with an outer abutting block 4233 in a direction away from the electromagnetic assembly 10. The top end of the second side spring piece 423 passes through the third through hole 33, and the outer abutting block 4233 is positioned above the sliding block 30.

The inner abutment block 4223 and the outer abutment block 4233 fix the slider 30 from the upper and lower sides, respectively.

The middle of the movable contact 43 is concavely provided with a clamping groove 431, the movable contact 43 passes through the first clamping hole 4212, the second clamping hole 4221 and the third clamping hole 4231, and the mounting bump 4211 is located in the clamping groove 431.

Referring to fig. 5, a bottom surface of the slider 30 is concavely provided with a clamping groove 35 corresponding to a position of the rotary armature 20, and a top end of the rotary armature 20 is located in the clamping groove 35.

Referring to fig. 6, the limiting frame 70 is provided with a first positioning opening 71 corresponding to the first mounting block 41 of the movable contact assembly 40, and the first mounting block 41 is located in the first positioning opening 71; the limiting frame 70 is provided with a second positioning opening 72 corresponding to the first fixed contact assembly 50, and the first fixed contact assembly 50 is positioned in the second positioning opening 72; the limiting frame 70 is provided with a third positioning opening 73 corresponding to the second fixed contact assembly 60, and the second fixed contact assembly 60 is located in the third positioning opening 73.

One side of the first positioning opening 71 is further provided with a plurality of concave limiting grooves 711 corresponding to the plurality of riveting lugs 411, and each riveting lug 411 is located in one limiting groove 711.

When the movable contact 43 of the movable spring 42 is closed with the first fixed contact 51 of the first fixed contact assembly 50, the second leg 442 is in interference fit with the second through hole 32, and the second leg 442 generates a contact pressure that promotes the contact between the movable contact 43 and the first fixed contact 51; and a gap exists between the first leg 441 and the first through hole 31. The second leg 442 can also generate a first repulsive force for driving the movable spring 42 to move away from the first stationary contact 51, thereby reducing the actuation voltage of the relay.

When the movable contact 43 of the movable spring 42 is closed with the second fixed contact 61 of the second fixed contact assembly 60, the first leg 441 is in interference fit with the first through hole 31, so as to generate a contact pressure for promoting the movable contact 43 to contact with the second fixed contact 61; and a gap exists between the second leg 442 and the second through hole 32. The first leg 441 can also generate a second repulsive force for driving the movable spring 42 to move away from the second stationary contact 61, thereby reducing the operating voltage of the relay.

The contact pressure and the repulsive force become larger as the deformation of the movable spring 42, the first leg 441, or the second leg 442 becomes larger.

Referring to fig. 7, the first leg 441 acts on one side of the first through hole 31, the second leg 442 acts on one side of the second through hole 32 away from the first leg 441, and the top of the second side spring 423 passes through the third through hole 33. The first leg 441 causes the slider 30 to deflect to one side about the second side spring 423 as shown at a; and the second leg 442 also causes the slider 30 to deflect about the second side spring 423 toward the same side, as shown at b. This makes the slider 30 tilt and is not favorable for smooth sliding of the slider 30.

Referring to fig. 8, in order to prevent the slider 30 from tilting, a third leg 4234 protrudes upward from a side of the second side spring 423 away from the second leg 442, and the third leg 4234 passes through the first through hole 31; the side of the first side spring leaf 422 far away from the first supporting leg 441 is provided with a fourth supporting leg 4224 in an upward protruding way, and the fourth supporting leg 4234 passes through the second through hole 32. In this way, the first leg 441 and the third leg 4234 respectively act on two sides of the first through hole 31, and the second leg 442 and the fourth leg 4224 respectively act on two sides of the second through hole 32, so as to prevent the slider 30 from tilting.

Compared with the prior art, the moving contact component of the utility model comprises a first mounting block 41, a moving contact 42 riveted with the first mounting block 41 and a moving contact 43 arranged at one end of the moving contact 42 far away from the first mounting block 41, wherein two ends of the moving contact 43 respectively protrude out of two sides of the moving contact 42; the movable reed 42 comprises a main reed 421, a first side reed 422 and a second side reed 423 which are respectively positioned at two sides of the main reed 421; a circular arc-shaped mounting lug 4211 is convexly arranged in the middle of the top end of the main reed 421, a first clamping hole 4212 is formed in the mounting lug 4211, a first supporting leg 441 is convexly arranged at one side of the mounting lug 4211 on the top end of the main reed 421, and a second supporting leg 442 is convexly arranged at the other side of the mounting lug 4211; the first leg 441 and the second leg 442 are inclined in directions away from each other; the top of the first side reed 422 is provided with a second clamping hole 4221 corresponding to the first clamping hole 4212; the top of the second side spring piece 423 is provided with a third clamping hole 4231 corresponding to the first clamping hole 4212; the middle of the movable contact 43 is concavely provided with a clamping groove 35, the movable contact 43 passes through the first clamping hole 4212, the second clamping hole 4221 and the third clamping hole 4231, and the mounting bump 4211 is located in the clamping groove 35. So can produce the contact pressure who promotes moving contact and static contact, increase two-way resilience force simultaneously, reduce action voltage and simple structure, cost are lower.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.

Claims

1. A moving contact component is characterized in that: the movable contact is arranged at one end of the movable spring, which is far away from the first mounting block, and two ends of the movable contact respectively protrude out of two sides of the movable spring; the movable reed comprises a main reed, a first side reed and a second side reed which are respectively positioned at two sides of the main reed; the middle part of the top end of the main reed is provided with an arc-shaped mounting lug in a protruding manner, a first clamping hole is formed in the mounting lug, a first support leg is arranged at one side of the mounting lug in the protruding manner at the top end of the main reed, and a second support leg is arranged at the other side of the mounting lug in the protruding manner; the first support leg and the second support leg incline towards the direction away from each other; the top of the first side reed is provided with a second clamping hole corresponding to the first clamping hole; the top of the second side reed is provided with a third clamping hole corresponding to the first clamping hole; the middle part of moving contact is sunken to be provided with the draw-in groove, and the moving contact passes first joint hole, second joint hole and third joint hole, and the installation lug is arranged in the draw-in groove.

2. A movable contact assembly as claimed in claim 1, wherein: and a first avoidance opening is formed in the position, corresponding to the first supporting leg, of the top of the first side reed.

3. A movable contact assembly as claimed in claim 1, wherein: and a second avoidance opening is formed in the position, corresponding to the second supporting leg, of the top of the second side spring plate.

4. A movable contact assembly as claimed in claim 1, wherein: the top end of the first side reed is vertically connected with an inner abutting block.

5. The movable contact assembly of claim 4 wherein: the top end of the second side spring plate is vertically connected with an outer abutting block, and the height of the top end of the second side spring plate is larger than that of the top end of the first side spring plate.

6. The movable contact assembly of claim 5 wherein: a third supporting leg is arranged on one side, far away from the second supporting leg, of the second side spring leaf in an upward protruding mode; one side of the first side spring leaf, which is far away from the first supporting leg, is provided with a fourth supporting leg in an upward protruding manner.

7. A movable contact assembly as claimed in claim 1, wherein: and a plurality of riveting lugs are arranged on one side of the first mounting block in a protruding manner, and the bottom ends of the main reed, the first side reed and the second side reed are all riveted with the riveting lugs.