CN219202972U

CN219202972U - Contact mechanism of switch device

Info

Publication number: CN219202972U
Application number: CN202223612882.6U
Authority: CN
Inventors: 周志平; 周俊武; 孙文豪; 付书生
Original assignee: Zhejiang Yieryi Electric Manufacturing Co ltd
Current assignee: Zhejiang Yieryi Electric Manufacturing Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-16
Anticipated expiration: 2032-12-30

Abstract

The embodiment of the application discloses a contact mechanism of a switching device, which comprises a shell, a first wiring terminal, a second wiring terminal, a moving contact and a fixed contact, wherein the first wiring terminal and the second wiring terminal are arranged in the shell, the moving contact and the fixed contact are respectively connected with the first wiring terminal and the second wiring terminal, and a plate-pressing driving structure which is rotatably arranged on the shell and used for driving the moving contact to contact with or separate from the fixed contact; the utility model has the effects of preventing the moving contact from moving relatively, ensuring the connection stability between the moving contact and the contact support and ensuring the on-off sensitivity of a switching device.

Description

Contact mechanism of switch device

Technical Field

The utility model relates to the technical field of switches, in particular to a contact mechanism of a switching device.

Background

A switch is an electronic component that can open a circuit, interrupt a current, or cause it to flow to other circuits. Referring to fig. 4, a toggle switch in the prior art includes two connection terminals 01 disposed in a switch housing, a fixed contact 02, a movable contact bridge 03, and a pressing plate 04 swinging on the switch housing, where the pressing plate includes a pressing panel 041, a driving portion 042 and a switch slider 043, the switch slider 043 is elastically disposed at one end of the driving portion 042 and slides against the upper end surface of the movable contact bridge 03, and a conductive sheet 05 is disposed in one of the connection terminals 01 in a extending manner, and one end of the conductive sheet 05 extends against the lower end surface of the movable contact bridge 03, so as to form an electrical connection between the conductive sheet 05 and the movable contact bridge 03, so that the movable contact bridge 03 is driven by the pressing plate 04 to swing reciprocally on the conductive sheet 05, thereby realizing contact or separation with the fixed contact 02. As can be seen from the structure of the switch described above, it still has the following problems: because the contact surface of the movable contact bridge and the conducting strip is small, the stability of the movable contact bridge when rotating around the contact surface of the movable contact bridge and the conducting strip is poor, displacement is easily generated between the movable contact bridge and the conducting strip in the long-term use process, poor contact occurs between the conductive contact and the static contact, and the on-off sensitivity of the switch is affected.

Disclosure of Invention

Therefore, the utility model aims to solve the technical problem that the contact mechanism of the switching device for ensuring the on-off sensitivity of the product is more stable and reliable in contact of the moving contact and the fixed contact and solves the problem that the contact sensitivity of the switch is affected due to poor contact between the moving contact and the fixed contact caused by poor stability when the moving contact rotates in the prior art.

In order to solve the technical problems, the utility model provides a contact mechanism of a switch device, which comprises a shell, a first wiring terminal, a second wiring terminal, a moving contact and a fixed contact, wherein the first wiring terminal and the second wiring terminal are arranged in the shell, the moving contact and the fixed contact are respectively connected with the first wiring terminal and the second wiring terminal, and a plate-pressing driving structure which is rotatably arranged on the shell and used for driving the moving contact to contact with or separate from the fixed contact; the first wiring terminal is provided with a contact support arranged in the shell in an extending mode, the contact support comprises a middle jack through which the moving contact can pass, and two limiting grooves which are oppositely and separately arranged on two sides of the middle jack, and two limiting protrusions which are rotatably connected with the two limiting grooves are arranged on two sides of the moving contact.

As a preferable scheme, the limit groove is arranged in a V shape, and the limit protrusion is inserted into the limit groove.

As a preferable scheme, the limiting protrusions are integrally formed with the bump structures on the side edges of the moving contact, the two limiting protrusions are symmetrically distributed on the side edges of the two sides of the moving contact, and the limiting protrusions are attached to the bottoms of the corresponding limiting grooves.

As a preferable scheme, two opposite positioning slots are formed in the inner walls of the two sides of the shell, and the two ends of the contact support are respectively inserted into the two positioning slots in a matching way.

As a preferred solution, the first connection terminal includes a first connection piece and a first bolt screwed with the first connection piece, and the contact support is integrally formed on the first connection piece.

As a preferable scheme, the second wiring terminal comprises a second connecting piece and a second bolt in threaded connection with the second connecting piece, and the fixed contact is integrally formed on the second connecting piece.

As a preferable scheme, the pressing plate driving structure comprises a pressing panel rotatably arranged on the shell and a driving part used for driving the moving contact to rotate towards a direction close to or far away from the fixed contact, wherein the driving part is fixedly arranged on the pressing panel, and a clamping groove used for inserting the moving contact is formed in the driving part.

As a preferable scheme, the push plate driving structure further comprises a switch sliding block, one end of the switch sliding block is movably arranged on the driving part, and the other end of the switch sliding block is in sliding abutting contact with the end face of the moving contact.

As a preferable scheme, the push plate driving structure further comprises a limit spring, wherein the limit spring is arranged between the switch sliding block and the driving part, stretches along the direction that the moving contact is inserted into the middle jack, and applies elastic pressure tightly abutted to the switch sliding block and the moving contact.

The technical scheme of the utility model has the following advantages:

1. according to the contact mechanism of the switch device, the contact support is formed by extending the first wiring terminal, two limit grooves are formed on two sides of the middle through hole of the contact support relatively, two limit protrusions which are connected in the two limit grooves in a rotating mode are arranged on two sides of the moving contact correspondingly, when the push plate driving structure is pressed, the moving contact is driven to swing on the contact support, the contact surface of the limit protrusions and the limit grooves is used as a fulcrum to rotate, and the moving contact is driven to rotate in the direction of approaching or separating from the fixed contact, so that the contact or separation of the moving contact and the fixed contact is achieved, and the switch device is further turned on or turned off; this kind of structure sets up, the moving contact with realize the location rotation effect to the moving contact through spacing recess and spacing bellied cooperation between the contact support to can prevent that the moving contact from taking place relative movement, ensure the connection stability between moving contact and the contact support, utilize spacing recess can restrict the rotation angle of moving contact simultaneously, guarantee the accuracy and the reliability of moving contact and stationary contact, and then ensure switching sensitivity of switching device.

2. According to the contact mechanism of the switch device, the limiting protrusion is clamped at the bottom of the limiting groove through the V-shaped limiting groove, the V-shaped design can limit the moving range of the contact surface of the limiting protrusion and the contact support, meanwhile, the rotation of the moving contact is not affected, and the stability of the moving contact in rotation is improved.

3. According to the contact mechanism of the switch device, the contact support and the first wiring terminal are integrally formed, so that the overall structural strength can be improved, and good conductivity between the contact support and the first wiring terminal can be ensured.

4. According to the contact mechanism of the switch device, when the pressing panel is pressed, the driving part drives the moving contact to rotate together along with the pressing panel, and the firmness between the moving contact and the driving part can be improved through the clamping fit between the clamping groove and the moving contact, so that the rotating sensitivity of the moving contact is improved; meanwhile, the switch sliding block is abutted on the movable contact through the elastic action of the limiting spring, the movable contact is tightly pressed on the contact support, and the movable contact can be prevented from being separated from the contact support, so that the contact stability between the movable contact and the contact support is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of a switchgear of the present utility model;

FIG. 2 is a schematic view of the structure of the contact mechanism of the present utility model;

FIG. 3 is a schematic view of the structure of the plate-pressing driving mechanism of the present utility model;

FIG. 4 is a schematic diagram of a prior art structure;

reference numerals illustrate:

1. a housing; 11. positioning the slot; 2. a first connection terminal; 21. a first connecting piece; 22. a first bolt; 3. a second connection terminal; 31. a second connecting piece; 32. a second bolt; 4. a moving contact; 41. a limit protrusion; 5. a stationary contact; 6. a plate-pressing driving structure; 61. pressing the panel; 62. a driving section; 621. a clamping groove; 63. a switch slide; 64. a limit spring; 7. a contact holder; 71. a middle jack; 72. and a limit groove.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

The mounting structure in this embodiment is described in detail below with reference to fig. 1 to 3:

the utility model provides a contact mechanism of a switching device as shown in fig. 1-3, which comprises a shell 1, a first wiring terminal 2, a second wiring terminal 3, a moving contact 4 and a fixed contact 5 which are respectively connected with the first wiring terminal 2 and the second wiring terminal 3, and a pressing plate driving structure 6 which is rotatably arranged on the shell 1 and used for driving the moving contact 4 and the fixed contact 5 to be contacted with or separated from each other; the first wiring terminal 2 is connected with the moving contact 4, the second connection terminal 3 is connected with the fixed contact 5, the first wiring terminal 2 is provided with a contact support 7 arranged in the shell 1 in an extending mode, the contact support 7 comprises a middle jack 71 through which the moving contact 4 can pass, and two limiting grooves 72 which are oppositely arranged on two sides of the middle jack 71, and two limiting protrusions 41 which are rotatably connected with the two limiting grooves 72 are arranged on two sides of the moving contact 4.

The above embodiment is a core technical solution of this embodiment, by extending the first connection terminal 2 to form the contact support 7, two limiting grooves 72 are relatively disposed on two sides of the central through hole of the contact support 7, two limiting protrusions 41 rotatably connected to the two limiting grooves 72 are disposed on two sides of the moving contact 4, when the push plate driving structure is pressed, the moving contact 4 is driven to swing on the contact support 7, so that the moving contact 4 rotates with the contact surface of the limiting protrusion 41 and the limiting groove 72 as a fulcrum, and the moving contact 4 is driven to rotate in a direction approaching to or separating from the fixed contact 5, so as to achieve contact or separation between the moving contact 4 and the fixed contact 5, and further achieve connection or disconnection of the switching device; this kind of structure sets up, moving contact 4 with the cooperation through spacing recess 72 and spacing protruding 41 between the contact support 7 realizes the location rotation effect to moving contact 4 to can prevent moving contact 4 and take place relative movement, ensure the connection stability between moving contact 4 and the contact support 7, utilize spacing recess 72 can restrict moving contact 4's rotation angle simultaneously, guarantee moving contact and stationary contact's accuracy and reliability, and then ensure switching device's break-make sensitivity.

As shown in fig. 1-2, the limiting grooves 72 are V-shaped, the limiting protrusions 41 are inserted into the limiting grooves 72, the limiting protrusions 41 are integrally formed on the side wall of the moving contact 4, the two limiting protrusions 41 are symmetrically distributed on two sides of the moving contact 4, and the limiting protrusions 41 are attached to the bottoms of the corresponding limiting grooves 72; the limiting protrusion 41 is clamped at the bottom of the limiting groove 72 through the V-shaped limiting groove 72, the V-shaped design can limit the moving range of the contact surface of the limiting protrusion 41 and the contact support 7, meanwhile, the rotation of the moving contact 4 is not influenced, and the stability of the moving contact 4 in rotation is improved; two opposite positioning slots 11 are formed in the inner walls of the two sides of the shell 1, and the two ends of the contact support 7 are respectively inserted into the two positioning slots 11 in a matching manner.

As shown in fig. 1-2, the limiting protrusions 41 are integrally formed in a bump structure on the side edges of the moving contact 4, and the two limiting protrusions 41 are symmetrically distributed on the side edges of the two sides of the moving contact 4, the limiting protrusions 41 are attached to the bottoms of the corresponding limiting grooves 72, and when the moving contact 4 rotates in a direction approaching or separating from the fixed contact 5, the limiting grooves 72 play a limiting role on the swing range of the limiting protrusions 41, so that the moving range of the moving contact 4 is limited, and the stability of the position of the moving contact 4 is ensured.

The following describes in detail the specific embodiments of the first connection terminal 2 and the second connection terminal 3 with reference to fig. 1-2:

the first connection terminal 2 comprises a first connection sheet 21 and a first bolt 22 in threaded connection with the first connection sheet 21, and the contact support 7 is integrally formed on the first connection sheet 21; the second connection terminal 3 comprises a second connection piece 31 and a second bolt 32 in threaded connection with the second connection piece 31, and the fixed contact 5 is integrally formed on the second connection piece 31; the integrated structure strength can be improved by adopting the integrated design in the structure, and meanwhile, good conductivity between the two mutually connected parts can be ensured.

In this embodiment, in order to achieve a more sensitive on-off function of the switching device, as shown in fig. 1 to 3, the push plate driving mechanism 6 includes a push plate 61 rotatably disposed on the housing 1, a driving portion 62 for driving the moving contact 4 to rotate in a direction approaching or separating from the fixed contact 5, a switch slider 63, and a limit spring 64; the driving part 62 is fixedly installed on the pressing panel 61, a clamping groove 621 for inserting the moving contact 4 is formed in the driving part 62, one end of the switch sliding block 63 is movably arranged on the driving part 62, the other end of the switch sliding block 63 is in sliding abutting contact with the end face of the moving contact 4, the limit spring 64 is arranged between the switch sliding block 63 and the driving part 62, the limit spring 64 stretches along the direction that the moving contact 4 is inserted into the middle jack 71, and elastic pressure tightly abutting against the moving contact 4 is applied to the switch sliding block 63; when the pressing panel 61 is pressed, the driving part 62 drives the moving contact 4 to rotate along with the pressing panel 61, and the fastening engagement between the fastening groove 621 and the moving contact 4 can improve the reliability between the moving contact 4 and the driving part 62, thereby improving the rotation sensitivity of the moving contact 4; meanwhile, the switch sliding block 63 is abutted on the moving contact 4 through the elastic action of the limit spring 64, the moving contact 4 is pressed on the contact support 7, and the moving contact 4 can be prevented from being separated from the contact support 7, so that the contact stability between the moving contact 4 and the contact support 7 is ensured.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. The contact mechanism of the switching device comprises a shell (1), a first wiring terminal (2) and a second wiring terminal (3) which are arranged in the shell (1), a moving contact (4) and a fixed contact (5) which are respectively connected with the first wiring terminal (2) and the second wiring terminal (3), and a pressing plate driving structure (6) which is rotatably arranged on the shell (1) and used for driving the moving contact (4) to be contacted with or separated from the fixed contact (5); the method is characterized in that: the first wiring terminal (2) is provided with a contact support (7) arranged in the shell (1) in an extending mode, the contact support (7) comprises a middle jack (71) through which the moving contact (4) can pass, and two limiting grooves (72) which are relatively arranged on two sides of the middle jack (71), and two limiting protrusions (41) which are rotationally connected with the two limiting grooves (72) are arranged on two sides of the moving contact (4).

2. A contact mechanism for a switching device as claimed in claim 1, wherein: the limiting groove (72) is arranged in a V shape, and the limiting protrusion (41) is inserted into the limiting groove (72).

3. A contact mechanism for a switching device as claimed in claim 2, wherein: the limiting protrusions (41) are integrally formed in a bump structure on the side edges of the moving contact (4), the two limiting protrusions (41) are symmetrically distributed on the side edges of the two sides of the moving contact (4), and the limiting protrusions (41) are attached to the bottoms of the corresponding limiting grooves (72).

4. A contact mechanism for a switching device as claimed in claim 1, wherein: two opposite positioning slots (11) are formed in the inner walls of the two sides of the shell (1), and the two ends of the contact support (7) are respectively inserted into the two positioning slots (11) in a matching mode.

5. A contact mechanism for a switching device as claimed in claim 1, wherein: the first wiring terminal (2) comprises a first connecting piece (21) and a first bolt (22) in threaded connection with the first connecting piece (21), and the contact support (7) is integrally formed on the first connecting piece (21).

6. A contact mechanism for a switching device as claimed in claim 1, wherein: the second wiring terminal (3) comprises a second connecting sheet (31) and a second bolt (32) in threaded connection with the second connecting sheet (31), and the fixed contact (5) is integrally formed on the second connecting sheet (31).

7. A contact mechanism of a switching device according to any one of claims 1-6, wherein: the pressing plate driving structure (6) comprises a pressing panel (61) rotatably arranged on the shell (1) and a driving part (62) for driving the moving contact (4) to rotate towards a direction close to or far away from the fixed contact (5), the driving part (62) is fixedly arranged on the pressing panel (61), and a clamping groove (621) for inserting the moving contact (4) is formed in the driving part (62).

8. A contact mechanism for a switching device as recited in claim 7, wherein: the push plate driving structure (6) further comprises a switch sliding block (63), one end of the switch sliding block (63) is movably arranged on the driving part (62), and the other end of the switch sliding block (63) is in sliding abutting pressing on the end face of the moving contact (4).

9. A contact mechanism for a switching device as recited in claim 8, wherein: the push plate driving structure (6) further comprises a limit spring (64), the limit spring (64) is arranged between the switch sliding block (63) and the driving part (62), the limit spring (64) stretches along the direction that the moving contact (4) is inserted into the middle jack (71), and elastic pressure tightly abutted to the moving contact (4) is applied to the switch sliding block (63).