CN114121540A

CN114121540A - Drive for a switching device and switching device

Info

Publication number: CN114121540A
Application number: CN202010907904.8A
Authority: CN
Inventors: 余号章; 孙全周; 谭韡; 何明辉; 肖星
Original assignee: Siemens Ltd China
Current assignee: Siemens Ltd China
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2022-03-01

Abstract

The invention provides a driving piece for a switch device. The switch device comprises a key and a swinging structure, wherein the driving piece can be arranged between the key and the swinging structure and can drive the swinging structure to swing under the pressing action of the key so as to realize the connection or disconnection of a circuit of the switch device. The driving piece comprises at least two driving bodies, a connecting body and at least two elastic connecting parts. The two ends of the connecting body are respectively provided with at least one driving body. The elastic connection part is connected between the driving body and the connection body. The driving piece can reduce the rotation angle of the key to reduce the overall thickness of the switch device, and can be quickly assembled in the switch device. The invention also provides a switch device with the driving piece.

Description

Drive for a switching device and switching device

Technical Field

The invention relates to the field of low-voltage electrical, in particular to a driving piece for a switch device and the switch device with the driving piece.

Background

Currently, most of the existing switch devices have their keys directly connected to their internal oscillating structure to drive the on and off of the internal conductive parts of the switch device. Under the structure, the rotation angle of the key is consistent with the swing angle of the swing structure, so that the whole thickness of the switch device is limited, the switch device needs larger thickness inside and outside a wall body, and the appearance effect of the switch device is limited.

In the existing design, a raising rod is respectively arranged on two sides of the swinging structure, and the raising rods on two sides are pressed by the key to operate the swinging of the swinging structure, so that the key is driven to swing at a larger swinging angle by a smaller rotating angle to drive the swinging structure, and the thickness of the switch device is reduced. However, the related design structure is inconvenient to produce and assemble and poor in reliability.

Disclosure of Invention

The invention aims to provide a driving piece which can reduce the rotation angle of a key of a switch device under the condition of not reducing the swing amplitude of a swing structure, is easy to produce and assemble and has high reliability.

Another object of the invention is to provide a switchgear comprising such an actuator, which is of low overall thickness, easy to produce and assemble and highly reliable.

The invention provides a driving piece for a switch device, which comprises a key and a swinging structure, wherein the driving piece can be arranged between the key and the swinging structure and can drive the swinging structure to swing along with the key under the pressing action of the key so as to realize the connection or disconnection of a circuit of the switch device. The driving piece comprises at least two driving bodies, a connecting body and at least two elastic connecting parts. The two ends of the connecting body are respectively provided with at least one driving body. The elastic connection part is connected between the driving body and the connection body. The driving piece can reduce the rotation angle of the key so as to reduce the whole thickness of the switch device, and can be quickly assembled in the switch device.

In a further exemplary embodiment of the driving element according to the present invention, the driving body includes a rotating shaft, and the driving body can be supported by the switch device through the rotating shaft and rotate accordingly when the key is driven.

In another exemplary embodiment of the driving body according to the present invention, the driving body comprises one pressing portion and one driving portion. And the pressing part can drive the driving body to rotate under the pressing of the key. The driving part can drive the swing structure to swing.

In a further exemplary embodiment of the drive element according to the present invention, the distance between the pressing portion and the rotation axis is smaller than the distance between the drive portion and the rotation axis. Optionally, the pressing portion is located between the rotating shaft and the driving portion. Because the distance between the pressing part and the rotating shaft is smaller than the distance between the driving part and the rotating shaft, when the driving body rotates, the stroke of the pressing part is smaller than that of the driving part, and the larger swinging angle of the swinging structure can be driven by the smaller rotating angle of the key.

In a further exemplary embodiment of the drive element according to the present invention, one drive element is connected to the connecting body via one or both of the elastic connecting parts.

In a further exemplary embodiment of the inventive driving element, the resilient connection comprises an extension arm and at least one resilient arm. One end of the extension arm is connected with the connecting body. Two ends of the elastic arm are respectively connected with the other end of the extension arm and the driving body.

In a further exemplary embodiment of the drive element according to the invention, two elastic arms are connected to one extension arm, so that a plurality of drive bodies can be arranged in a limited space of the switching device.

In yet another exemplary embodiment of the driving member of the present invention, the elastic connection portion further includes a support block formed to extend from the extension arm toward the function module of the switching device for supporting the extension arm. When the driving body rotates, the elastic arm connected with the driving body deforms, and the deformation of the elastic arm cannot interfere with the other elastic arm on the extension arm connected with the driving body due to the supporting block arranged on the extension arm.

In a further exemplary embodiment of the drive element according to the present invention, the spring arm comprises a bend, which makes the rotational axis of the drive body parallel to the rotational axis of the wobble structure. In addition, set up the bending segment and can provide more deformation spaces for elastic connection portion.

In a further exemplary embodiment of the inventive drive element, the connection body is provided with at least one positioning portion.

In a further exemplary embodiment of the driving element according to the present invention, the positioning portion is a positioning groove, a positioning post or a snap.

In a further exemplary embodiment of the inventive driving element, the connecting body is provided with an opening in the middle. The swing structure of the switching device can protrude from the opening, thereby reducing the overall thickness of the switching device.

In a further exemplary embodiment of the drive element according to the present invention, the drive element is formed in one piece.

The invention also provides a switch device which comprises a key, a functional module and the driving piece according to any scheme, wherein the driving piece can rotate under the driving of the key and drive the swinging structure in the functional module to swing. The switch device has the advantages of small overall thickness, easy production and assembly and high reliability.

In a further exemplary embodiment of the switching device according to the present invention, the switching device comprises a pressure plate, to the side of which the drive element is detachably connected, which faces the functional module. By detachably connecting the driving member to the pressing plate, the assembly of the switching device can be facilitated.

Drawings

The foregoing and other features and advantages of the invention will become more apparent to those skilled in the art to which the invention relates upon consideration of the following detailed description of a preferred embodiment of the invention with reference to the accompanying drawings, in which:

fig. 1 is an exploded view of an exemplary embodiment of a switchgear of the present invention.

Fig. 2 is a schematic structural view of an exemplary embodiment of the driving element of the present invention.

Fig. 3 is a schematic view of the driving member in fig. 2 from another perspective.

Fig. 4 is a cross-sectional view of the switching device of the present invention.

Wherein the reference numbers are as follows:

10, 11, 12, 13 keys 321 extension arm 332 pressing part

20 pressing plate 3211 supporting block 333 driving part

30 drive piece 322 elastic arm 40 function module

31 connecting body 3221 bending section 41 swinging structure

311 drive body 50 mounting frame of positioning part 33

312 opening 331 rotating shaft

32 elastic connecting part

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals indicate the same or structurally similar but functionally identical elements.

"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.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, for simplicity and clarity of understanding, only one of the components having the same structure or function is schematically illustrated or labeled in some of the drawings.

Referring to fig. 1, there is shown an exploded view of an exemplary embodiment of a switching device of the present invention. The switch device includes a key 10, a pressing plate 20, a driving member 30, a function module 40, and a mounting bracket 50. Wherein, the number of the keys 10 can be set to be one, two, three, four and other numbers. In fig. 1, three keys are provided, including key 11, key 12, and key 13. The functional module 40 comprises a swing structure capable of driving the switching means to switch the circuit on and off. The driving member 30 can drive the swinging structure to swing under the action of the key 10. The driving member 30 includes a connecting body, a driving body, and an elastic connecting portion connecting the connecting body and the driving body. The actuating member 30 is detachably connected to a side of the pressure plate 20 facing the functional module 40. In addition, the switch device may be configured without the pressing plate 20, and the driving member 30 may be detachably connected to the function module 40, or may be otherwise configured, which is not limited herein. Specifically, the positioning portion 311 may be disposed on the connecting body 31 of the driving member 30, and the positioning portion 311 may be a positioning groove, a positioning post, a snap, or other manners. The driving piece with the integrated design is convenient to produce and assemble, and the overall thickness of the switch device with the driving piece can be reduced.

Referring to fig. 2, there is shown a schematic structural view of an exemplary embodiment of the driving member of the present invention. The driver 30 can be used for a three-key switch. The driving member 30 may be integrally formed, and includes a connecting body 31, four elastic connecting portions 32, and six driving bodies 33, wherein the driving bodies 33 are connected to the connecting body 31 through the elastic connecting portions 32. Specifically, the driving body 33 may be connected to the connection body through one elastic connection portion 32, and may also be connected to the connection body through two elastic connection portions 32. Under the driving of the push button, the driving body 33 can rotate and drive the swing structure to swing.

A positioning portion 311 may be provided on the connection body 31 for positioning the driving member 30 in the switching device. Specifically, the positioning portion 311 may be a positioning notch, a positioning column is disposed on the pressing plate, and the driving member 30 is positioned on the switch device through the positioning notch and the positioning column. The connecting body 31 is provided with an opening 312 in the middle to accommodate the end of the oscillating structure to pass through, thereby reducing the overall thickness of the switchgear.

The driving body 33 includes a rotation shaft 331, a pressing portion 332, and a driving portion 333. When the push button is driven, the driving body 33 can be supported by the switch device through the rotation shaft 331 and rotate accordingly, the pressing portion 332 can drive the driving body 33 to rotate, and the driving portion 333 drives the swing structure 41 to swing. The driving bodies 33 may be disposed at both sides of the connecting body 31 as shown in fig. 2.

As shown in fig. 2, the pressing portion 332 is located between the rotating shaft 331 and the driving portion 333. When the driving body 33 rotates, the pressing part 332 and the driving part 333 have the same rotation angle, but since the distance between the pressing part 332 and the rotation shaft 331 is smaller than the distance between the driving part 333 and the rotation shaft 331, the stroke of the driving part 333 is larger than that of the pressing part 332. The driving body 33 can amplify a stroke when the key is rotated and transmit the amplified stroke to the inside of the switching device, thereby reducing the overall thickness of the switching device. The pressing portion 332 and the driving portion 333 may be provided on both sides of the rotation shaft 331.

Each of the elastic connection portions 32 of fig. 2 may further include an extension arm 321 and an elastic arm 322. One end of the extension arm 321 is connected to the connection body 31. Both ends of the elastic arm 322 are respectively connected to the other end of the extension arm 321 and one driving body 33. As shown in fig. 2, when it is required to connect two linkage members 33 with one elastic connection portion 32, two elastic arms 322 may be connected at the end of one extension arm 321.

Referring to fig. 3, a schematic view of the driving member of fig. 2 is shown from another perspective. The resilient connecting portion 32 further includes a supporting block 3211. The supporting block 3211 is formed by extending the extension arm 321 toward the functional module 40 of the switch device, and is configured to support the extension arm 321. Since the extension arm 321 is supported to the function module 40 by the supporting blocks 3211 and is not deformed by the rotation of the driving body 33, when one of the elastic arms 322 connected thereto is deformed by the rotation of the corresponding driving body 33, the elastic arm 322 does not interfere with the other elastic arm 322 connected to the extension arm 321 to maintain the mutual independence between the adjacent driving bodies 33. The elastic arm 322 can further include a bending section 3221, and the bending section 3221 can make the rotation axis of the driving body 33 connected thereto parallel to the rotation axis of the swing structure 41, and provide a larger space for the deformation of the elastic arm 322.

The driving member of the present invention may take other forms than the driving member 30 shown in fig. 2 and 3, and is not limited thereto. For example, two driving bodies may be symmetrically disposed only at both sides of the driving member connecting body, each driving body being connected to the connecting body through one or two elastic connecting portions; four driving bodies can be symmetrically arranged on two sides of the driving part connecting body, and each driving body is connected to the connecting body through one or two elastic connecting parts; eight driving bodies can be symmetrically arranged on two sides of the driving part connecting body, and each driving body is connected to the connecting body through one or two elastic connecting parts.

With reference to fig. 4, a sectional view is shown along the swing structure below the key 11 of the switching device of fig. 1 and perpendicular to the axis of rotation of the swing structure. The driving member 30 is assembled between the button 11 and the swing structure 41. When the driving button 11 is rotated, the driving body 33 corresponding to the depressed side of the button 11 is rotated toward the function module 40 about the rotation shaft 331 of the driving body 33 to transmit the rotation of the button 11 to the swing structure 41. When the key 11 rotates, the stroke of the first part acting on the pressing part 332 is smaller than the stroke of the second part acting on the driving end 333 by the swing structure 41; the distance between the first position and the rotation axis of the key 11 is larger than the distance between the second position and the rotation axis of the swing structure 41. Therefore, the swing angle of the swing structure 41 is larger than the rotation angle of the key 11. When the driving body 33 rotates, the elastic connecting portion 32 connected with the driving body deforms, and the elastic connecting portion can generate restoring force, so that key virtual positions can be eliminated to a certain extent, and the pressing hand feeling of the switch is optimized.

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-listed detailed description of a series of embodiments is merely a specific description of possible examples of the present invention, and is not intended to limit the scope of the invention, and equivalent embodiments or modifications, such as combinations, divisions or repetitions of 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 actuator for a switching device, said switching device comprising a push button (10) and a swing structure (41), said actuator (30) being arranged between said push button (10) and said swing structure (41) and being capable of driving said swing structure (41) to swing in response to a push of said push button (10) to complete or break a circuit of said switching device, characterized in that said actuator (30) comprises:

at least two driving bodies (33);

a connecting body (31) provided with at least one driving body (33) at each of both ends thereof; and

at least two elastic connection parts (32), the elastic connection parts (32) being connected between the driving body (33) and the connection body (31).

2. An actuating member for a switching device according to claim 1, wherein said actuating body (33) comprises a rotary shaft (331), and said actuating body (33) is supported by said switching device via said rotary shaft (331) and is rotatable accordingly upon actuation of said push button (10).

3. Drive for a switching device according to claim 2, characterized in that the drive body (33) comprises:

and a pressing part (332) which can drive the driving body (33) to rotate when the key (10) is pressed.

And a driving part (333) which can drive the swinging structure (41) to swing.

4. An actuating member for a switching device according to claim 3, wherein the distance of the pressing portion (332) from the rotational axis (331) is smaller than the distance of the driving portion (333) from the rotational axis (331).

5. Actuating member for a switching device according to claim 1, wherein one of said actuating bodies (33) is connected to said connecting body (31) by one or both of said elastic connecting portions (32).

6. An actuator for a switchgear, as claimed in claim 1, characterized in that said elastic connection (32) comprises:

an extension arm (321) having one end connected to the connection body (31); and

and the two ends of the at least one elastic arm (322) are respectively connected with the other end of the extension arm (321) and the driving body (33).

7. An actuator for a switching device according to claim 6, wherein two resilient arms (322) are connected to one of the extension arms (321).

8. The actuator for switchgear as claimed in claim 7, wherein the resilient connection (32) further comprises a support block (3211), the support block (3211) being formed to extend from the extension arm (321) to the function module (40) of the switchgear for supporting the extension arm (321).

9. The driving member for a switching device according to claim 6, wherein the resilient arm (322) comprises a bent section (3221), the bent section (3221) making the rotation axis of the driving body (33) parallel to the rotation axis of the swing structure (41).

10. An actuator for a switching device according to claim 1, characterised in that the connection body (31) is provided with at least one locating portion (311).

11. A drive for a switching device according to claim 1, wherein the positioning portion (311) is a positioning slot, a positioning post or a snap.

12. An actuator for a switching device according to claim 1, characterised in that the connecting body (31) is provided with an opening (312) in the middle.

13. An actuator for a switching device according to claim 1, wherein the actuator (30) is integrally formed.

14. A switching device comprising a push button (10), a functional module (40), characterized by comprising at least one actuating element (30) according to any one of claims 1 to 13, the actuating element (30) being capable of being rotated by the push button (10) and of actuating a pivoting structure (41) in the functional module (40) in a pivoting manner.

15. Switching device according to claim 14, characterized in that the switching device comprises a pressure plate (20), the actuating element (30) being detachably connected to a side of the pressure plate (20) facing the functional module (40).