CN211150436U

CN211150436U - Auxiliary contact assembly of contactor and contactor

Info

Publication number: CN211150436U
Application number: CN202020145286.3U
Authority: CN
Inventors: 肖永清; 郭成燕; 王谋; 俞楠
Original assignee: Siemens Electrical Apparatus Ltd
Current assignee: Siemens Electrical Apparatus Ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-07-31
Anticipated expiration: 2030-01-22

Abstract

An auxiliary contact assembly for a contactor includes a housing (10) and an auxiliary contact unit (20). The housing includes a rigid latch (12), a resilient latch (14) and a shroud (16). The rigid clasp extends in a first direction (X), the ends of the rigid clasp extending in a second direction (Z1) perpendicular to the first direction. The elastic buckle extends out along the first direction, the elastic buckle is arranged on one side of the rigid buckle, and the end part of the elastic buckle extends out along a fifth direction perpendicular to the first direction (X). The shielding part is arranged on one side of the elastic buckle along the fifth direction, and an operation gap (11) communicated with the outside of the shell along the reverse direction of the first direction is formed between the shielding part and the elastic buckle. The auxiliary contact unit is provided to the housing and has a driving portion (22) protruding in a first direction. The auxiliary contact assembly must be disassembled by means of a tool, and has higher safety. The utility model also provides a contactor that has above-mentioned auxiliary contact subassembly.

Description

Auxiliary contact assembly of contactor and contactor

Technical Field

The utility model relates to an auxiliary contact subassembly, especially an auxiliary contact subassembly of contactor. In addition the utility model discloses still relate to the contactor including above-mentioned auxiliary contact subassembly.

Background

An auxiliary contact assembly is an accessory to a contactor, which is used to switch on or off a control circuit, or to indicate the operating state of the contactor. The auxiliary contact assembly is usually hung on the surface of the shell of the contactor, and the conventional auxiliary contact assembly can be directly taken down from the surface of the shell of the contactor by hands during disassembly, so that the safety problem exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an auxiliary contact subassembly of contactor must dismantle with the help of the instrument, has higher security.

Another object of the present invention is to provide a contactor, the auxiliary contact assembly of which must be disassembled with the help of tools, with higher safety.

The utility model provides an auxiliary contact subassembly of contactor, including a shell and an auxiliary contact unit. The housing includes a rigid latch, an elastic latch, and a shield. The rigid clasp extends in a first direction, and the end of the rigid clasp extends in a second direction perpendicular to the first direction. The elastic buckle extends out along the first direction, the elastic buckle is arranged on one side of the rigid buckle along the second direction or a third direction, the third direction and the second direction are opposite, and the end part of the elastic buckle extends out along a fifth direction perpendicular to the first direction. The shielding part is arranged on one side of the elastic buckle along the fifth direction at intervals and can prevent fingers from contacting the elastic buckle, and an operation gap communicated with the outside of the shell along the first direction is formed between the shielding part and the elastic buckle. The auxiliary contact unit is disposed in the housing, and the auxiliary contact unit has a driving portion that protrudes out of the housing in a first direction.

The utility model provides an auxiliary contact subassembly of contactor can be fixed in the body shell of contactor through rigidity buckle and elasticity buckle with the casing firmly. When dismantling, the unable bare-handed dismantlement of auxiliary contact subassembly can only stretch into the operating gap and support and press the elasticity buckle with the help of the instrument, consequently has higher security.

In an exemplary embodiment of an auxiliary contact assembly of a contactor, the auxiliary contact assembly includes a first housing portion and a second housing portion. The first shell part is provided with a mounting surface which is perpendicular to the first direction, the rigid buckle is formed on the mounting surface, and the first shell part is provided with a buckle through hole on the mounting surface. The second shell part and the first shell part are spliced to form the shell, and the elastic buckle is formed on the second shell part and penetrates through the buckle through hole. Whereby the mounting of the auxiliary contact unit is facilitated.

In an exemplary embodiment of the auxiliary contact assembly of the contactor, the end of the resilient latch is formed with a driving ramp against which the end of the resilient latch is driven in a direction opposite to the fifth direction. Borrow this can stretch into the second installation through-hole with the elasticity buckle under the condition of not with the help of the instrument and realize the joint.

In an exemplary embodiment of the auxiliary contact assembly of the contactor, the housing has two rigid latches arranged in a fourth direction and located on either side of the resilient latch in the fourth direction, the fourth direction being perpendicular to the first and second directions, respectively. Thereby increasing the robustness of the installation.

In an exemplary embodiment of the auxiliary contact assembly of the contactor, the fifth direction is co-directional with the third direction. Thereby facilitating the installation of the auxiliary contact assembly and having good fixing effect

In an exemplary embodiment of an auxiliary contact assembly of a contactor, the auxiliary contact unit includes a moving contact frame, a pair of first stationary contacts, a pair of second stationary contacts, a first moving contact, and a second moving contact. The movable contact head frame is movably arranged on the shell along the second direction and the third direction, and the driving part is arranged on the movable contact head frame. The first fixed contact is arranged on the shell. The second static contact is arranged on the shell. The first moving contact is arranged on the moving contact head frame, and the moving contact head frame moves along the second direction to drive the first moving contact to abut against the pair of first fixed contacts. The second moving contact is arranged on the moving contact head frame, and the moving contact head frame moves along the third direction to drive the second moving contact to abut against the pair of second fixed contacts.

In an exemplary embodiment of an auxiliary contact assembly of a contactor, a first movable contact and a second movable contact are movably disposed to a movable contact frame in a second direction and a third direction, respectively. The auxiliary contact unit further comprises a compression spring, one end of which abuts the first movable contact against the movable contact frame in the second direction. The other end abuts the second moving contact against the moving contact frame along a third direction. Therefore, the movement stroke of the driving part is increased, and the auxiliary contact assembly can be suitable for contactor bodies of different models or cope with movement errors in the linkage process.

The utility model also provides a contactor, including a body shell and an foretell supplementary contact subassembly. The body case has a mounting side plate on which a first mounting through-hole and a second mounting through-hole are formed. The rigidity buckle can joint in first installation through-hole, and the elasticity buckle can joint in second installation through-hole.

Drawings

The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.

Fig. 1 is an exploded view of an exemplary embodiment of an auxiliary contact assembly of a contactor.

Fig. 2 is an assembly structure diagram of an auxiliary contact assembly of the contactor.

Fig. 3 is a schematic view illustrating an installation state of an auxiliary contact assembly of the contactor.

Fig. 4 is a schematic view of a disassembled state of an auxiliary contact assembly of the contactor.

Figure 5 is a partial cross-sectional schematic view of an auxiliary contact assembly of the contactor.

Description of the reference symbols

10 outer casing

11 operating gap

12 rigid buckle

13 first shell part

14 elastic buckle

15 second shell part

16 shield part

17 through hole of buckle

20 auxiliary contact unit

21 moving contact headstock

22 drive part

24 first static contact

25 second static contact

26 first moving contact

27 second moving contact

28 compression spring

30 side installation plate

32 first mounting through hole

34 second mounting through hole

40 tool

S1 mounting surface

S2 driving ramp

X first direction

Z1 second direction

Z2 third Direction

Y fourth direction

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, wherein the same reference numerals in the drawings denote the same or similar components.

"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.

In this document, "first", "second", etc. do not mean their importance or order, etc., but merely mean that they are distinguished from each other so as to facilitate the description of the document.

Fig. 1 is an exploded view of an exemplary embodiment of an auxiliary contact assembly of a contactor. Fig. 2 is an assembly structure diagram of an auxiliary contact assembly of the contactor. Referring to fig. 1 and 2, the auxiliary contact assembly includes a housing 10 and an auxiliary contact unit 20.

The housing 10 includes two rigid snaps 12, one resilient snap 14, and one curtain 16. The rigid clasp 12 extends along a first direction X, the ends of the rigid clasp 12 extending along a second direction Z1 perpendicular to the first direction X. The elastic buckle 14 extends along the first direction X, the elastic buckle 14 is disposed on one side of the two rigid buckles 12 along a third direction Z2, the third direction Z2 and the second direction Z1 are opposite, and an end of the elastic buckle 14 extends along a fifth direction perpendicular to the first direction X. In the exemplary embodiment, referring to fig. 1 to 5, the fifth direction is the same as the third direction Z2, which facilitates the installation of the auxiliary contact assembly and has a good fixing effect. However, without limitation, other directions perpendicular to the second direction Z1 may be used in the fifth direction in other exemplary embodiments.

Fig. 3 is a schematic view illustrating an installation state of an auxiliary contact assembly of the contactor. Referring to fig. 3, when the housing 10 is installed, the rigid fasteners 12 are inserted into the first installation through holes 32 of the installation side plate 30 in a one-to-one correspondence, and then the housing 10 is rotated around the rigid fasteners 12, so that the elastic fasteners 14 are inserted into the second installation through holes 34 when the housing 10 abuts against the installation side plate 30. The rigid latch 12 and the resilient latch 14 extend in opposite directions, and thereby engage the first mounting hole 32 and the second mounting hole 34, respectively, to fixedly mount the housing 10 to the mounting side plate 30. In the illustrated embodiment, referring to fig. 2, two rigid catches 12 are arranged along a fourth direction Y perpendicular to the first direction X and the second direction Z1 and on both sides of the elastic catch 14, thereby increasing the mounting stability. However, without being limited thereto, in other exemplary embodiments, the number of rigid catches 12 may be adjusted to the actual situation, and it is also possible that the auxiliary contact assembly comprises only one rigid catch 12.

Fig. 4 is a schematic view of a disassembled state of an auxiliary contact assembly of the contactor. Referring to fig. 3 and 4, the shielding portion 16 is disposed at a distance from one side of the elastic latch 14 along the fifth direction, and can prevent fingers from contacting the elastic latch 14, and an operation gap 11 communicating with the outside of the housing 10 along the first direction X is formed between the shielding portion 16 and the elastic latch 14. The width of the operating gap 11 is such that no finger can be inserted, and a tool 40 is required to be inserted into the operating gap 11 to press the elastic catch 14 to release the lock.

The auxiliary contact unit 20 is disposed in the housing 10, and the auxiliary contact unit 20 has a driving portion 22 that protrudes out of the housing 10 in the first direction X. The driving part 22 can be inserted into the body of the contactor after the auxiliary contact assembly is installed, and the auxiliary contact unit 20 is interlocked with the body of the contactor.

The utility model discloses an auxiliary contact subassembly when the installation, can be fixed in the body shell of contactor through rigidity buckle 12 and elasticity buckle 14 with casing 10 firmly. During disassembly, the auxiliary contact assembly cannot be disassembled by hand, and can only extend into the operating gap 11 and press against the elastic buckle 14 by means of the tool 40, so that higher safety is achieved.

In an exemplary embodiment, referring to fig. 1 and 2, the auxiliary contact assembly includes one first shell portion 13 and one second shell portion 15. The first housing part 13 has a mounting surface S1 perpendicular to the first direction X, the rigid latch 12 is formed on the mounting surface S1, and the first housing part 13 has a latch through hole 17 formed on the mounting surface S1. The second shell portion 15 is spliced with the first shell portion 13 to form the shell 10, and the elastic buckle 14 is formed on the second shell portion 15 and penetrates through the buckle through hole 17. The mounting surface S1 is just abutted against the mounting side plate 30 when the elastic clip 14 is clipped with the second mounting through hole 34. The housing 10 is formed by splicing a first housing part 13 and a second housing part 15, and facilitates the installation of the auxiliary contact unit 20.

In the illustrated embodiment, referring to fig. 3, the end of the resilient catch 14 is formed with a drive ramp S2. When the elastic buckle 14 extends into the second installation through hole 34, the hole wall of the second installation through hole 34 can be clamped by abutting against the driving inclined surface S2 to drive the elastic buckle 14 to bend along the reverse movement of the fifth direction, and the elastic buckle 14 extends into the second installation through hole 34 without the aid of a tool.

Figure 5 is a partial cross-sectional schematic view of an auxiliary contact assembly of the contactor. Referring to fig. 1 and 5, in the illustrated embodiment, the auxiliary contact unit 20 includes a movable contact frame 21, a pair of first stationary contacts 24, a pair of second stationary contacts 25, a first movable contact 26, and a second movable contact 27. The movable contact frame 21 is movably provided to the housing 10 in the second direction Z1 and the third direction Z2, and the driving part 22 is provided to the movable contact frame 21. The first stationary contact 24 is disposed on the housing 10. The second stationary contact 25 is disposed on the housing 10. The first moving contact 26 is arranged on the moving contact frame 21, and the moving contact frame 21 moving along the second direction Z1 can drive the first moving contact 26 to abut against and communicate with the pair of first fixed contacts 24. The second moving contact 27 is arranged on the moving contact frame 21, and the moving contact frame 21 moves along the third direction Z2 to drive the second moving contact 27 to abut against and communicate with the pair of second fixed contacts 25.

In the illustrated embodiment, referring to fig. 5, the first movable contact 26 and the second movable contact 27 are movably disposed to the movable contact frame 21 along the second direction Z1 and the third direction Z2, respectively. The auxiliary contact unit 20 further comprises a compression spring 28, one end of the compression spring 28 abuts the first movable contact 26 against the movable contact frame 21 along the second direction Z1, and after the first movable contact 26 abuts the pair of first fixed contacts 24, the driving portion 22 can continue to move along the second direction Z1 and compress the compression spring 28. The other end of the compression spring 28 presses the second movable contact 27 against the movable contact frame 21 along the third direction Z2, and after the second movable contact 27 presses against the pair of second fixed contacts 25, the driving portion 22 can continue to move along the third direction Z2 and compress the compression spring 28. Therefore, the movement stroke of the driving part 22 is increased, so that the auxiliary contact assembly can be suitable for contactor bodies of different models or cope with movement errors in the linkage process.

The utility model also provides a contactor, refer to figure 2, contactor includes a body shell and an foretell auxiliary contact subassembly. The body housing is used for placing and protecting each functional component of the contactor, and has a mounting side plate 30, and two first mounting through holes 32 and a second mounting through hole 34 are formed on the mounting side plate 30. The rigid buckles 12 can be clamped in the first mounting through holes 32 in a one-to-one correspondence, and the elastic buckles 14 can be clamped in the second mounting through holes 34.

It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The above list of details is only for the practical examples of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications, such as combinations, divisions or repetitions of the features, which do not depart from the technical spirit of the present invention, should be included in the scope of the present invention.

Claims

1. An auxiliary contact assembly for a contactor, comprising:

a housing (10) comprising:

-a rigid clasp (12) projecting along a first direction (X), the ends of said rigid clasp (12) projecting along a second direction (Z1) perpendicular to said first direction (X),

-an elastic catch (14) projecting in the first direction (X), said elastic catch (14) being arranged on one side of said rigid catch (12) in said second direction (Z1) or in a third direction (Z2), said third direction (Z2) being opposite to said second direction (Z1), the end of said elastic catch (14) projecting in a fifth direction perpendicular to said first direction (X), and

a shielding part (16) which is arranged at one side of the elastic buckle (14) along the fifth direction at intervals and can prevent fingers from contacting the elastic buckle (14), wherein an operation gap (11) communicated with the outside of the shell (10) along the direction opposite to the first direction (X) is formed between the shielding part (16) and the elastic buckle (14); and

an auxiliary contact unit (20) disposed within the housing (10), the auxiliary contact unit (20) having a drive portion (22) that extends out of the housing (10) in the first direction (X).

2. An auxiliary contact assembly for a contactor as claimed in claim 1, wherein said auxiliary contact assembly comprises:

a first housing portion (13) having a mounting surface (S1) perpendicular to the first direction (X), the rigid latch (12) being formed at the mounting surface (S1), the first housing portion (13) being formed with a latch through-hole (17) at the mounting surface (S1); and

a second shell part (15) spliced with the first shell part (13) to form the shell (10), wherein the elastic buckle (14) is formed on the second shell part (15) and penetrates through the buckle through hole (17).

3. The auxiliary contact assembly of a contactor as claimed in claim 1, wherein the end of said resilient latch (14) is formed with a driving ramp (S2) against which the end of said resilient latch (14) is driven in the direction opposite to the fifth direction (S2).

4. Auxiliary contact assembly for a contactor according to claim 1, characterized in that said housing (10) has two of said rigid catches (12), said two rigid catches (12) being aligned along a fourth direction (Y) and being located on either side of said elastic catch (14) in said fourth direction (Y), said fourth direction (Y) being perpendicular to said first direction (X) and to said second direction (Z1), respectively.

5. Auxiliary contact assembly of a contactor according to claim 1, characterized in that said fifth direction is co-directional with said third direction (Z2).

6. Auxiliary contact assembly of a contactor according to claim 1, characterized in that the auxiliary contact unit (20) comprises: a movable contact holder (21) movably provided to the housing (10) in the second direction (Z1) and a third direction (Z2), the driving part (22) being provided to the movable contact holder (21);

a pair of first stationary contacts (24) provided to the housing (10);

a pair of second stationary contacts (25) provided to the housing (10);

a first moving contact (26) arranged on said moving contact holder (21), said moving contact holder (21) being movable along said second direction (Z1) to drive said first moving contact (26) against said pair of first fixed contacts (24); and

and a second moving contact (27) arranged on the moving contact frame (21), wherein the moving contact frame (21) moves along the third direction (Z2) to drive the second moving contact (27) against the pair of second fixed contacts (25).

7. Auxiliary contact assembly for a contactor according to claim 6, characterized in that said first movable contact (26) and said second movable contact (27) are movably arranged to the movable contact frame (21) along said second direction (Z1) and a third direction (Z2), respectively; said auxiliary contact unit (20) further comprises a compression spring (28) having one end abutting said first movable contact (26) against said movable contact carrier (21) along said second direction (Z1) and the other end abutting said second movable contact (27) against said movable contact carrier (21) along said third direction (Z2).

8. A contactor, characterized by comprising:

a body case having a mounting side plate (30), the mounting side plate (30) having a first mounting through-hole (32) and a second mounting through-hole (34) formed therein; and

auxiliary contact assembly according to any one of claims 1 to 7, wherein the rigid snap (12) is adapted to snap into the first mounting through hole (32) and the resilient snap (14) is adapted to snap into the second mounting through hole (34).