Operating mechanism of switch

Abstract

An operating mechanism of a switch belongs to the technical field of low-voltage apparatuses. A switching-off valve rod, a switching-off lever and a switching-off half shaft are rotationally arranged in the operating mechanism, the switching-off half shaft is in hasp fit with the switching-off lever, the switching-off lever is in hasp fit with the switching-off valve rod, the switching-off lever comprises a male fitting piece, a female fitting piece and an elastic assembly arranged between the male fitting piece and the female fitting piece, and the elastic assembly is in hasp fit with the switching-off half shaft. The opening lever is characterized in that the opening lever further comprises a first installation part, and the first installation part is arranged on the male matching part or the female matching part, limits the relative rotation amount of the male matching part and the female matching part from the initial position to the final position, and is used for preventing the elastic assembly from being excessively compressed. The operating mechanism has the advantages of preventing the elastic component from being excessively compressed to ensure the unlocking characteristic of the operating mechanism.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-voltage electrical appliances, and in particular relates to an operating mechanism of a switch. Background Art

[0002] As the capacity of the power grid continues to increase, the breaking index of the circuit breaker is getting higher and higher, which requires the circuit breaker operating mechanism to be able to unlock quickly and the contacts to separate quickly to achieve the purpose of breaking large currents. When a short circuit and large current appear in the circuit, the electric repulsion between the contacts increases significantly, which increases the force between the trip button and the locking device, thereby overcoming the spring reaction force on the locking device, causing the locking device to deflect clockwise, pushing the tripping half-axis to rotate and unlock, thereby unlocking the operating mechanism and driving the contacts to separate quickly. Since the locking device is composed of a male mating part, a female mating part, and a compression spring between the two, the unlocking process is a fast movement process, generally within 10ms, which can easily cause the compression spring to be coiled and unstable, causing spring damage, causing changes in spring characteristics, and then affecting the unlocking characteristics of the circuit breaker operating mechanism.

[0003] In view of the above-mentioned prior art, the applicant has made a beneficial design for the operating mechanism of the existing switch, and the technical solution to be introduced below is produced in this context. Utility Model Content

[0004] The utility model aims to provide an operating mechanism of a switch, which can limit the relative rotation amount of the male fitting and the female fitting from the initial position to the final position, prevent the elastic component from being over-compressed, and effectively ensure the unlocking characteristic of the operating mechanism.

[0005] The object of the utility model is achieved in this way. A switch operating mechanism is provided, wherein a gate-opening valve stem, a gate-opening lever and a gate-opening half-shaft are rotatably arranged inside the operating mechanism, the gate-opening half-shaft is snap-fitted with the gate-opening lever, the gate-opening lever is snap-fitted with the gate-opening valve stem, the gate-opening lever comprises a male fitting, a female fitting and an elastic component arranged between the male fitting and the female fitting, the gate-opening lever further comprises a first mounting member, the first mounting member is arranged on the male fitting or the female fitting of the gate-opening lever, limits the relative rotation amount of the male fitting and the female fitting from the initial position to the final position, and is used to prevent the elastic component from being over-compressed.

[0006] In a specific embodiment of the present utility model, the opening lever further comprises a rotating shaft, and the male fitting and the female fitting are both rotatably arranged via the rotating shaft.

[0007] In another specific embodiment of the utility model, the male fitting includes a pair of lever pieces arranged at intervals, the first mounting member is installed between the pair of lever pieces, the elastic component includes a spring and a base, one end of the spring abuts against the base and the other end abuts against the female fitting, and the base is installed between the pair of lever pieces.

[0008] In another specific embodiment of the utility model, a second mounting member and a third mounting member are further provided between the pair of lever pieces, the second mounting member abuts against the female mating member to limit the angle between the male mating member and the female mating member when they are in the initial position; the third mounting member is arranged on a rotating end of the pair of lever pieces.

[0009] In another specific embodiment of the present invention, the first mounting member is a round shaft, which is disposed between a pair of lever sheets of the male fitting and located on one side of the spring.

[0010] In another specific embodiment of the present invention, the first mounting member is in the shape of a flat plate, which is disposed between a pair of lever sheets of the male fitting and located on one side of the spring.

[0011] In a further specific embodiment of the present invention, the first mounting member is integrally provided with the lever sheet, and the first mounting member is a bend on the lever sheet.

[0012] In a further specific embodiment of the present invention, the first mounting member is arranged on the base, the first mounting member is columnar, and the spring is sleeved on the first mounting member.

[0013] In yet another specific embodiment of the present invention, the first mounting member is mounted on the female fitting, the first mounting member is columnar, and the spring is sleeved on the first mounting member.

[0014] In yet another specific embodiment of the present invention, the female fitting includes a rotating center hole, and the rotating center hole is used to be rotatably arranged with the rotating shaft. The female fitting is also provided with an abutment surface, and the abutment surface is used to abut against the second mounting member. The rotating end of the female fitting is provided with a buckle end.

[0015] The utility model adopts the above structure and has the beneficial effect: since a first mounting member for preventing the spring from bending is provided on the opening lever, the first mounting member can limit the relative rotation amount of the male fitting member and the female fitting member from the initial position to the final position, preventing the elastic component from being over-compressed, so as to ensure the unlocking characteristic of the operating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the switch involved in the utility model;

[0017] Figure 2 This is a schematic diagram of the internal part of the operating mechanism in the first embodiment of the present utility model;

[0018] Figure 3 It is an exploded view of the internal part of the operating mechanism in the first embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the initial state of the internal tripping of the operating mechanism in the first embodiment of the present utility model;

[0020] Figure 5 It is a schematic diagram of the state of the operating mechanism in the first embodiment of the present utility model during the tripping process;

[0021] Figure 6 It is a schematic diagram of the lever piece and the first mounting member in the second embodiment of the utility model;

[0022] Figure 7 This is a schematic diagram of the internal part of the operating mechanism in the third embodiment of the present utility model;

[0023] Figure 8 It is a schematic diagram of a lever sheet and a first mounting member in a third embodiment of the utility model;

[0024] Fig. 9 This is a schematic diagram of the internal part of the operating mechanism in the fourth embodiment of the present utility model;

[0025] Fig.10 This is a schematic diagram of the first mounting member in the fourth embodiment of the present utility model;

[0026] Fig.11 It is a schematic diagram of the lever piece and the first mounting member in the fifth embodiment of the utility model.

[0027] In the figure: 1. operating mechanism, 11. gate-opening valve stem, 12. gate-opening lever, 121. male fitting, 1211. pressing inclined surface, 1212. riveting hole, 1213. insertion hole, 1214. fitting hole, 1215. mounting hole, 1216. rotation hole, 122. female fitting, 1221. rotation center hole, 1222. buckle end, 1223. abutting end, 123. rotating shaft, 124. elastic component, 1241. spring, 1242. base, 125. buckle shaft, 13. gate-opening half shaft, 131. half shaft portion; 2. switch body; 100. first mounting member; 200. second mounting member; 300. third mounting member. DETAILED DESCRIPTION

[0028] The specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings, but the description of the embodiments is not a limitation of the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as the protection scope of the present invention.

[0029] In the following description, all concepts related to directionality (or orientation) such as up, down, left, right, front and back are with reference to the position state of the figure being described, and are intended to facilitate public understanding. Therefore, they should not be understood as special limitations on the technical solution provided by the utility model. Example 1

[0030] like Figure 1 , which is a schematic diagram of a switch. The switch includes an operating mechanism 1 and a switch body 2. The operating mechanism 1 is an energy component of the switch, which provides energy for the operation of the switch. A contact system and an arc extinguishing chamber are provided inside the switch body 2, and the arc extinguishing chamber is located in the opening direction of the contact system. The contact system includes a moving contact and a stationary contact. The operating mechanism 1 drives the moving contact to move, thereby achieving contact or separation between the moving contact and the stationary contact. When the moving contact separates from the stationary contact and an arc is generated, the arc enters the arc extinguishing chamber and is extinguished inside the arc extinguishing chamber.

[0031] like Figure 2 , Figure 3 The operating mechanism 1 is provided with a gate-opening valve stem 11, a gate-opening lever 12 and a gate-opening half shaft 13. The gate-opening valve stem 11, the gate-opening lever 12 and the gate-opening half shaft 13 are all rotatably arranged inside the operating mechanism 1, specifically, rotatably arranged between a pair of side plates of the operating mechanism 1.

[0032] The opening half shaft 13 is snap-fitted with the opening lever 12, and the opening lever 12 is snap-fitted with the opening valve stem 11. When the switch performs an opening action, the opening half shaft 13 is required to unlock the opening lever 12, and the opening lever 12 then unlocks the opening valve stem 11, so that the operating mechanism 1 can perform an opening action and drive the contact system to perform an opening action.

[0033] The gate-opening valve stem 11 is a metal plate, and one rotating end thereof is used for snap-fitting with the gate-opening lever 12 .

[0034] The opening lever 12 is a component, including a male fitting 121, a female fitting 122, a rotating shaft 123, and an elastic component 124. The male fitting 121 and the female fitting 122 are both rotatably arranged by the rotating shaft 123. The male fitting 121 and the female fitting 122 can rotate relative to each other. The male fitting 121 and the female fitting 122 have an initial position, and after they rotate relative to each other and move closer, they reach a final position. The amount of relative rotation between the two determines the change in the angle between the two during the action, and also determines the distance between the two ends of the elastic component 124, and the distance between the two ends of the elastic component 124 determines the compression amount of the elastic component 124 at the final position.

[0035] The elastic component 124 is disposed between the male fitting 121 and the female fitting 122. The elastic component 124 provides a threshold force, and when the threshold force provided by the elastic component 124 is overcome, the male fitting 121 and the female fitting 122 can rotate relative to each other and come closer, so that the distance between the two ends of the elastic component 124 becomes smaller, and the elastic component 124 is compressed.

[0036] The male fitting 121 includes a pair of lever pieces, which are spaced apart and connected as a whole by riveting.

[0037] A first mounting member 100, a second mounting member 200 and a third mounting member 300 are provided between the pair of lever sheets. The first mounting member 100, the second mounting member 200 and the third mounting member 300 are all provided between the pair of lever sheets, and preferably, the first mounting member 100, the second mounting member 200 and the third mounting member 300 are installed by riveting.

[0038] The elastic component 124 includes a spring 1241 and a base 1242. One end of the spring 1241 rests on the base 1242 and the other end rests on the female fitting 122. The base 1242 is installed on the male fitting 121. Specifically, the base 1242 is installed between a pair of lever sheets of the male fitting 121.

[0039] The male fitting 121 further includes a snap-fit ​​shaft 125 , and the gate valve stem 11 is snap-fitted with the snap-fit ​​shaft 125 .

[0040] In this embodiment, the first mounting member 100 is a circular shaft, which is disposed between a pair of lever pieces of the male fitting member 121 and is located on one side of the spring 1241. When the female fitting member 122 rotates relative to the male fitting member 121 and approaches the male fitting member 121, the first mounting member 100 acts as a bearing shaft to limit the relative rotation amount of the male fitting member 121 and the female fitting member 122 from the initial position to the final position, thereby controlling the distance between the two ends of the elastic component 124 and preventing the elastic component from being over-compressed.

[0041] The second mounting member 200 is also a shaft, which is also arranged between a pair of lever pieces of the male fitting member 121. When the female fitting member 122 rotates relative to the male fitting member 121 and moves away from the male fitting member 121, the second mounting member 200 acts as abutting shaft against the female fitting member 122. Thus, the angle between the male fitting member 121 and the female fitting member 122 when they are in the initial position is limited.

[0042] The third mounting member 300 is disposed on a rotation end of the pair of lever pieces.

[0043] The opening half shaft 13 is a shaft-like part, on which a half shaft portion 131 is provided, and preferably, the half shaft portion 131 is located in the middle of the opening half shaft 13. The opening half shaft 13 generally further includes a reset elastic member, preferably a torsion spring, which provides a restoring force for the opening half shaft 13. That is, when the opening half shaft 13 is twisted, the elastic force of the reset elastic member needs to be overcome to make the opening half shaft 13 rotate.

[0044] like Figure 4 , Figure 5 The schematic diagram of the tripping process of the operating mechanism 1 is shown. When a large current appears in the switch, the moving contact is repelled by the electric repulsion force, and the force is transmitted to the operating mechanism 1, and the gate-opening valve stem 11 pushes the buckle shaft 125, and the male fitting 121 overcomes the elastic component 124 and rotates close to the female fitting 122. At this time, the female fitting 122 is blocked by the gate-opening half shaft 13 and cannot rotate. At this time, the male fitting 121 and the female fitting 122 start to move from the initial position to the final position.

[0045] During the rotation of the male fitting 121, the pressing inclined surface 1211 on the lever piece moves the opening half shaft 13 to overcome the elastic force thereon and rotate clockwise ( Figure 5until the opening half shaft 13 releases the lock on the opening lever 12, specifically, releases the lock on the male fitting 121 and the female fitting 122, so that the entire opening lever 12 can swing upward, thereby releasing the lock on the opening valve stem 11, and the operating mechanism 1 performs the opening action. That is, when the male fitting 121 and the female fitting 122 rotate relatively to the final position, the lock on the opening lever 12 by the opening half shaft 13 is released.

[0046] In this embodiment, due to the presence of the first mounting member 100, on the one hand, it can limit the relative rotation amount of the male fitting member 121 and the female fitting member 122 from the initial position to the final position, preventing the elastic component 124 from being over-compressed, so as to ensure the unlocking characteristics of the operating mechanism. On the other hand, the first mounting member 100 can prevent the spring 1241 from bending to one side, which is conducive to ensuring the working state of the spring 1241. Example 2

[0047] like Figure 6 The schematic diagram of the lever piece is also a schematic diagram of the second embodiment. Preferably, the lever piece is a metal plate. The pressing inclined surface 1211 is located at the upper part of a rotating end of the lever piece. A rivet hole 1212 is also provided on the lever piece, and the rivet hole 1212 is used for the fixed installation of the second mounting member 200 and the third mounting member 300. An insertion hole 1213 is also provided on the lever piece, and the insertion hole 1213 is used for the fixed installation of the first mounting member 100. The matching hole 1214 on the lever piece is used for the installation of the base 1242, and the mounting hole 1215 on the lever piece is used for the rotation setting of the buckle shaft 125, and the rotation hole 1216 on the lever piece is used for the rotation setting of the lever piece itself.

[0048] In this embodiment, the first mounting member 100 is in the shape of a flat plate, which can better prevent the spring 1241 from bending to one side. Example 3

[0049] like Figure 7 , Figure 8 Schematic diagram of the third embodiment. In this embodiment, the first mounting member 100 is integrally arranged with the lever sheet, that is, the first mounting member 100 is a bend on the lever sheet. Example 4

[0050] like Fig. 9 , Fig.10Schematic diagram of the fourth embodiment. The first mounting member 100 is arranged on the base 1242. The first mounting member 100 is columnar, and the spring 1241 is sleeved on the first mounting member 100. This arrangement enables the first mounting member 100 to effectively ensure that the spring 1241 does not bend under stress, and at the same time, the end of the first mounting member 100 close to the female fitting 122 can limit the rotation amount of the male fitting 121 and the female fitting 122 to move closer to each other, that is, limit the compression amount of the spring assembly 124. Example 5

[0051] like Fig.11 Schematic diagram of the fifth embodiment. The first mounting member 100 is mounted on the female fitting member 122. The first mounting member 100 is columnar, and the spring 1241 is sleeved on the first mounting member 100. This arrangement enables the first mounting member 100 to effectively ensure that the spring 1241 does not bend under stress. At the same time, the end of the first mounting member 100 close to the base 1242 can limit the amount of rotation of the male fitting member 121 and the female fitting member 122, that is, limit the amount of compression of the spring assembly 124.

[0052] The female fitting 122 is usually made of plastic. The female fitting 122 includes a rotation center hole 1221, and the rotation center hole 1221 is used to be rotatably arranged with the rotation shaft 123. The female fitting 122 is also provided with abutment surface 1223, and the abutment surface 1223 is used to abut against the second mounting member 200. The rotation end of the female fitting 122 is provided with a buckle end 1222.

Claims

1. A switch operating mechanism, wherein the operating mechanism (1) is internally rotatably provided with a gate-opening valve stem (11), a gate-opening lever (12) and a gate-opening half-shaft (13), the gate-opening half-shaft (13) is snap-fitted with the gate-opening lever (12), the gate-opening lever (12) is snap-fitted with the gate-opening valve stem (11), the gate-opening lever (12) comprises a male fitting (121), a female fitting (122) and an elastic component (124) arranged between the male fitting (121) and the female fitting (122), characterized in that: The opening lever (12) further comprises a first mounting member (100), wherein the first mounting member (100) is arranged on a male fitting member (121) or a female fitting member (122) of the opening lever (12), and limits the relative rotation amount of the male fitting member (121) and the female fitting member (122) from an initial position to an end position, so as to prevent the elastic component (124) from being over-compressed.

2. The switch operating mechanism according to claim 1, characterized in that: The opening lever (12) further comprises a rotating shaft (123), and the male fitting part (121) and the female fitting part (122) are both rotatably arranged via the rotating shaft (123).

3. The switch operating mechanism according to claim 2, characterized in that: The male fitting (121) comprises a pair of lever plates arranged at intervals, the first mounting member (100) is mounted between the pair of lever plates, the elastic component (124) comprises a spring (1241) and a base (1242), one end of the spring (1241) abuts against the base (1242) and the other end abuts against the female fitting (122), and the base (1242) is mounted between the pair of lever plates.

4. The switch operating mechanism according to claim 3, characterized in that: A second mounting member (200) and a third mounting member (300) are also provided between the pair of lever pieces. The second mounting member (200) abuts against the female fitting member (122) to limit the angle between the male fitting member (121) and the female fitting member (122) when they are in an initial position. The third mounting member (300) is provided on a rotating end of the pair of lever pieces.

5. The switch operating mechanism according to claim 3, characterized in that: The first mounting member (100) is a round shaft, which is arranged between a pair of lever pieces of the male fitting member (121) and is located on one side of the spring (1241).

6. The switch operating mechanism according to claim 3, characterized in that: The first mounting member (100) is in the shape of a flat plate, which is arranged between a pair of lever plates of the male fitting member (121) and is located on one side of the spring (1241).

7. The switch operating mechanism according to claim 3, characterized in that: The first mounting member (100) is integrally arranged with the lever sheet, and the first mounting member (100) is a bend on the lever sheet.

8. The switch operating mechanism according to claim 3, characterized in that: The first mounting member (100) is arranged on the base (1242), the first mounting member (100) is columnar, and the spring (1241) is sleeved on the first mounting member (100).

9. The switch operating mechanism according to claim 3, characterized in that: The first mounting member (100) is mounted on the female fitting (122); the first mounting member (100) is columnar; and the spring (1241) is sleeved on the first mounting member (100).

10. The switch operating mechanism according to claim 4, characterized in that: The female fitting (122) comprises a rotation center hole (1221), and the rotation center hole (1221) is used for being rotatably arranged with the rotating shaft (123). The female fitting (122) is also provided with a supporting surface (1223), and the supporting surface (1223) is used for abutting against the second mounting member (200). The rotating end of the female fitting (122) is provided with a buckle end (1222).

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