A switch operating mechanism

Abstract

The utility model belongs to the technical field of low-voltage electrical appliances, and relates to an operating mechanism of a switch, including a limiter arranged on the inner wall of a shell, the limiter including a transition section and an elastic protruding section connected to each other, the transition section being connected to the inner wall of the shell, and the elastic protruding section elastically protruding from the inner wall of the shell, so that when the top operating wheel drives the slider assembly to slide horizontally, the elastic protruding section can be limitedly abutted with the slider assembly; when the slider assembly slides horizontally to trigger the clamping plate to rotate, the distal end of the clamping plate passes through the transition section, abuts against the elastic protruding section and stretches outward, so that the top operating wheel can drive the slider assembly to further slide horizontally through the elastic protruding section. Compared with the prior art, the utility model realizes intuitive feedback of the switch fault state, and avoids personal injury caused by the operator's misjudgment of the switch state.

Description

Technical Field

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

[0002] With the new type of DC high-voltage disconnectors entering the market, high requirements are placed on the closing and opening speed of disconnectors. The operating mechanism of the disconnector determines the closing and opening speed of the disconnector. At present, the operating mechanism of the disconnector on the market adopts a hard transmission method between the output follower and the input active member. For example, CN217588787U discloses an operating mechanism of the disconnector. Figure 4 In the operating mechanism shown in the figure, the a-axis and the b-axis are the rotating axes of the input active member, 200 and 300 are the input active members, when one of them is rotated by the operator, the output follower 300 on the other side will rotate together with the input active member, and the output follower 300 is connected to the contact module, and the rotation speed of the output follower is the closing and opening speed of the disconnector, so the closing and opening speed of the contact depends on the rotation speed of the input active member operated by the operator, which will greatly reduce the arc extinguishing effect when closing and opening.

[0003] Based on the above problems, Chinese patent application CN202311693667.X discloses an operating mechanism of an isolating switch, including a housing with a cavity inside, a second gear rotatably arranged in the cavity, a top operating wheel for driving the second gear to rotate, a clamping plate arranged to rotate coaxially with the second gear, an output follower connected to the clamping plate in a transmission manner, and a spring assembly; one end of the spring assembly is connected to the second gear and is eccentrically arranged relative to the rotating shaft of the second gear, and the other end is connected to the outer end of the clamping plate, so that when the input active member drives the second gear to rotate forward, the spring assembly is first compressed until the eccentrically arranged end crosses the line connecting the other end and the rotating shaft of the second gear, and then the elastic potential energy of the spring assembly is released and pushes the clamping plate to drive the output follower to rotate in the opposite direction. This technical solution adopts flexible transmission between the input active member and the output follower, so that the speed of the mechanism closing and opening is not dependent on human operation, thereby accelerating the speed of closing and opening. However, after the operating mechanism is closed, when the contacts are subjected to a large current shock, the contacts are welded, causing the splint to jam. The top operating wheel and the side operating wheel are input active parts. When one of the two is rotated by the operator to open the switch, the slider assembly slides to the left only under the influence of the flexible force of the spring force, and the shaft continues to rotate unaffected, driving the spring assembly past the dead point. At this time, the input active part indicates that the switch is open, but the contacts are still in the closed state due to welding and jamming, causing the operator to misread and posing a safety hazard. Utility Model Content

[0004] The purpose of the utility model is to provide an operating mechanism of a switch, which, by adding an elastic limiter to the slider assembly, makes it impossible for the rack to slide normally when the splint is stuck, and the top operating wheel and the side operating wheel cannot point to the opening position, so that the operator can be aware of the switch failure during the opening operation.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A switch operating mechanism includes a housing, a top operating wheel, a first gear, a slider assembly, a second gear, a rotating transmission member, an output follower, and a spring assembly, wherein the slider assembly includes a second rack, the rotating transmission member includes a clamping plate, and the clamping plate is arranged on a side close to the inner wall of the housing relative to the second rack.

[0007] The operating mechanism also includes a limiting member arranged on the inner wall of the shell.

[0008] The limiting member includes a transition section and an elastic protruding section connected to each other, wherein the transition section is connected to the inner wall of the shell, and the elastic protruding section elastically protrudes from the inner wall of the shell so that

[0009] When the top operating wheel drives the slider assembly to slide horizontally, the elastic protruding section can abut against the slider assembly in a limited position;

[0010] When the slider assembly slides laterally to trigger the clamp plate to rotate, the distal end of the clamp plate passes through the transition section, abuts against the elastic protruding section and stretches outward, so that the top operating wheel can drive the slider assembly to further slide laterally through the elastic protruding section.

[0011] As a preferred technical solution, the elastic displacement direction of the elastic protruding section is perpendicular to the lateral displacement direction of the slider assembly.

[0012] Furthermore, the limiting members are symmetrically arranged on opposite inner walls of the shell.

[0013] Furthermore, a limiting protrusion is provided on the outer wall at the distal end of the clamping plate, and when the clamping plate is rotated to open the elastic protruding section outward, the elastic protruding section can be in limiting contact with the limiting protrusion.

[0014] Furthermore, the limiting member is a limiting member made of elastic material, one end of the transition section is fixedly connected to the inner wall of the shell, and the other end is connected to the elastic protruding section.

[0015] As a preferred technical solution, the elastic material is stainless steel or manganese steel, or elastic plastic or the like.

[0016] Furthermore, the elastic protruding section has an outwardly convex arc surface structure.

[0017] As a preferred technical solution, one end of the transition section is fixed to the inner wall of the shell by means of screws.

[0018] Furthermore, the transition section is an inclined plate, and one end of the plate is hinged to the inner wall of the shell;

[0019] The elastic protruding section comprises an abutting plate connected to the inclined plate, and an elastic telescopic member arranged between the abutting plate and the inner wall of the shell.

[0020] Furthermore, the elastic telescopic member is a spring.

[0021] Furthermore, a slide groove is provided on the inner wall of the housing, and the limit member is slidably connected in the slide groove.

[0022] The transition section comprises an inclined plate, and the elastic protruding section comprises an abutting plate connected to the inclined plate, and an elastic telescopic member arranged between the abutting plate and the inner wall of the shell.

[0023] Furthermore, the transition section further comprises a straight plate, one end of which is connected to the inclined plate, and the other end of which is in sliding contact with the inner wall of the slide groove;

[0024] One end of the abutment plate is connected to the inclined plate, and the other end is slidably abutted against the inner wall of the slide groove.

[0025] Furthermore, the elastic telescopic member is a spring.

[0026] When the isolating switch is working normally, the top operating wheel can drive the slider assembly to slide horizontally until the triggering clamp plate rotates. At this time, the far end of the clamp plate passes through the transition section, abuts against the elastic protruding section and stretches outward, so that the top operating wheel can drive the slider assembly to slide horizontally through the elastic protruding section. At this time, the rotation angle of the top operating wheel indicates that the switch is open.

[0027] When the contact is impacted by a large current and welded, the clamp is stuck and cannot rotate, and the elastic protrusion cannot be opened outward, so that when the top operating wheel drives the slider assembly to slide horizontally, the elastic protrusion abuts against the slider assembly. At this time, the rotation angle of the top operating wheel indicates the closed and faulty state of the switch.

[0028] Compared with the prior art, the utility model has the following beneficial effects:

[0029] The utility model provides a limiter on the rotation path of the clamping plate that can interfere with the lateral sliding distance of the slider assembly, utilizes the characteristics that the lateral sliding distance of the slider assembly is associated with the rotation angle of the top operating wheel, and whether the clamping plate can rotate freely in the fault state and the non-fault state of the contact welding and jamming, to achieve intuitive feedback on the switch fault state, thereby avoiding personal injury caused by the operator's misjudgment of the switch state.

[0030] Specifically, in the non-fault state, the clamping plate can rotate under the action of the lateral sliding of the slider assembly, and the elastic protruding section on the limiter is pushed outward, the slider assembly can slide smoothly to the far end, and the rotation angle of the top operating wheel indicates that the switch is open. In the fault state, the clamping plate cannot rotate freely, the elastic protruding section cannot be pushed outward and interfere with the limit of the slider assembly in the lateral sliding, and the rotation angle of the top operating wheel indicates that the switch is closed and the switch is in fault state. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 , Figure 7 It is a schematic diagram of the three-dimensional structure of an operating mechanism of a switch in Example 1 (the housing is not shown);

[0032] Figure 2 A bottom view of an operating mechanism of a switch in Example 1;

[0033] Figure 3 is a schematic diagram of the structure of the spring assembly;

[0034] Figure 4 This is an exploded view of the splint, the second gear, and the shaft;

[0035] Figure 5 This is a cross-sectional view of the assembled clamp, spring assembly, and coupling;

[0036] Figure 6 is a cross-sectional view of an operating mechanism of a switch in Example 1;

[0037] Figure 8 It is a schematic diagram of the structure of a rotating shaft for connecting output driven members on both sides;

[0038] Fig. 9 It is a schematic diagram of the three-dimensional structure of an operating mechanism of a switch in Example 1;

[0039] Fig.10 It is a schematic diagram of the three-dimensional structure of an operating mechanism of a switch in Example 1;

[0040] Fig.11 This is a schematic structural diagram of a housing of an operating mechanism of a switch in Example 2;

[0041] Fig.12 This is a schematic diagram of the structure of an operating mechanism of a switch in Example 2;

[0042] Fig.13 is a cross-sectional view of an operating mechanism of a switch in Example 2;

[0043] Fig.14 It is a schematic diagram of the movement limit of the slider assembly;

[0044] Fig.15 This is the cross-sectional view of normal gate opening;

[0045] Fig.16 This is a schematic diagram of normal opening;

[0046] Fig.17 and Fig.18 This is a schematic diagram of Example 3;

[0047] Fig.19 and Fig. 20 This is a schematic diagram of Example 4;

[0048] Description of the markings in the figure:

[0049] 1. Top operating wheel; 101. First gear; 3. Clamp; 31. First mounting hole; 32. Second circumferential limiting hole; 33. First limiting surface; 4. Slider assembly; 41. First rack; 42. Second rack; 5. Second gear; 51. First spring shaft; 52. Second mounting hole; 53. Third circumferential limiting hole; 54. Second limiting surface; 6. Spring assembly; 61. Spring bracket; 62. Main compression spring; 63. Support plate; 64. Second spring shaft; 7. Coupling; 71. Circular hole; 72. First circumferential limiting shaft; 8. Rotating shaft; 81. Second circumferential limiting shaft; 82. Second circular axis surface; 9. Shell; 91. Third limiting surface; 92. Fourth limiting surface, 10- Elastic telescopic member, 11- Limiting member, 12- Side operating wheel. DETAILED DESCRIPTION

[0050] The following embodiments are implemented based on the above technical solution of the utility model, and provide detailed implementation methods and specific operation processes, but the protection scope of the utility model is not limited to the following embodiments.

[0051] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0052] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0053] Embodiment 1:

[0054] An operating mechanism of an isolating switch, same as CN202311693667.X, with a top operating wheel 1 and a side operating wheel 12 as input active parts, a coupling 7 as an output driven part, and the coupling 7 is connected to an external contact module;

[0055] like Figure 1 and Figure 2As shown, the clamping plates 3, the second gears 5, and the spring assembly 6 are arranged in pairs, with two clamping plates 3 on the outermost sides, followed by two second gears 5, and the spring assembly 6 in the middle;

[0056] like Figure 3 As shown, the spring assembly 6 is composed of a spring bracket 61, a main compression spring 62, a support plate 63 and a second spring shaft 64. The main compression spring 62 is installed between the spring bracket 61 and the support plate 63. The support plate 63 abuts against the second spring shaft 64. The second spring shaft 64 is installed as shown in FIG. Figure 4 In the first mounting hole 31 on the clamping plate 3 shown.

[0057] like Figure 4 , Figure 5 As shown, the clamping plate 3 has a second circumferential limiting hole 32, the second gear 5 has a third circumferential limiting hole 53, the rotating shaft 8 has a second circumferential limiting shaft 81 and a second circular axis surface 82, and the coupling 7 has a circular hole 71 and a first circumferential limiting shaft 72. The second axial limiting hole matches the first axial limiting shaft, the third circumferential limiting hole 53 and the first circumferential limiting hole 21 match the second circumferential limiting shaft 81, the second circular axis surface 82 matches the circular hole 71, and the first circular axis surface 22 matches the small diameter portion of the second circumferential limiting hole 32. Figure 5 As shown, similar to the connection relationship between the third circumferential limiting hole 53 and the second circumferential limiting shaft 81, the side operating wheel 12 is limitedly matched with the second circumferential limiting shaft 81 and rotates coaxially.

[0058] like Figure 6 As shown, the second gear 5 is provided with a second mounting hole 52, the first spring shaft 51 is installed in the second mounting hole 52, the spring bracket 61 abuts against the first spring shaft 51, the compression force of the main compression spring 62 is applied to the first spring shaft 51 and the second spring shaft 64, and gives the second gear 5 and the clamping plate 3 an opposite torque.

[0059] like Fig.10 and Fig.11 As shown, the entire mechanism is placed in the housing 9, and the second limiting surface 54 on the second gear 5 and the first limiting surface 33 on the clamping plate 3 are respectively in contact with the third limiting surface 91 and the fourth limiting surface 92 in the housing 9.

[0060] like Figure 7 As shown, the top operating wheel 1 is fixedly connected to the first gear 101, and the two can also be regarded as a whole. The slider assembly 4 is composed of a first rack 41 and a second rack 42, and the two are fixedly connected. The first gear 101 is meshed with the first rack 41, and the second rack 42 is meshed with the second gear 5.

[0061] The clamping plate 3 is arranged on one side close to the inner wall of the housing 9 relative to the second rack 42.

[0062] like Figure 6As shown, the movement process of the mechanism is as follows:

[0063] The rotation of the top operating wheel 1 drives the slider assembly 4 to slide to the right, and the second rack 42 drives the second gear 5 to rotate clockwise; the second gear 5 drives the second spring shaft 64 to rotate and compresses the main compression spring 62. At this time, the main compression spring 62 gives a clockwise torque to the splint 3. Since the first limit surface 33 of the splint 3 abuts against the third limit surface 91 of the shell 9, the splint 3 does not rotate clockwise. When the spring assembly 6 passes the dead point, the main compression spring 62 gives a counterclockwise torque to the splint 3, and the splint 3 drives the coupling 7 to rotate rapidly counterclockwise until the first limit surface 33 at the other end of the splint 3 abuts against the third limit surface 91 at the other end of the shell 9 and stops moving.

[0064] like Figure 8 and Fig. 9 As shown, the second circular axial surface 82 of the rotating shaft 8 can also be symmetrically arranged, so that there are two coupling members 7 on both sides of the mechanism, and the contact modules symmetrically arranged on both sides of the mechanism can be operated by the top operating wheel 1.

[0065] Embodiment 2:

[0066] A switch operating mechanism, compared with the embodiment 1, is different only in that: the operating mechanism further includes a limiter 11 arranged on the inner wall of the housing 9. The limiter 11 includes a transition section and an elastic protruding section connected to each other, the transition section is connected to the inner wall of the housing 9, and the elastic protruding section elastically protrudes from the inner wall of the housing 9.

[0067] Specifically, the stopper 11 is an elastic material stopper, one end of the transition section is fixedly connected to the inner wall of the housing 9, and the other end is connected to the elastic protruding section. The elastic protruding section is an outward convex arc surface structure.

[0068] The rest is the same as in Example 1.

[0069] In some specific embodiments, the elastic material is stainless steel or manganese steel, or elastic plastic, etc.

[0070] In some specific embodiments, the limiting members 11 are symmetrically arranged on opposite inner walls of the housing 9 .

[0071] In some specific embodiments, one end of the transition section is fixed to the inner wall of the housing 9 by means of screws.

[0072] In some specific embodiments, the elastic displacement direction of the elastic protruding section is perpendicular to the lateral displacement direction of the slider assembly 4 .

[0073] In some specific embodiments, a limiting protrusion is provided on the outer wall at the distal end of the splint 3. When the splint 3 rotates to open the elastic protruding section outward, the elastic protruding section can be in limiting contact with the limiting protrusion.

[0074] In some specific embodiments, the limiting protrusion is an end portion of the second spring shaft 64 extending out of the first mounting hole 31 .

[0075] like Figure 1 The operating mechanism in the closed state is shown. The entire mechanism is placed in a housing 9 that is connected in pairs. The limit members 11 are installed in pairs on the inner walls of the housing 9. The limit members 11 can deform or move in the normal direction of the symmetry plane of the mechanism.

[0076] like Figure 2 As shown, one end of the limiter 11 is fixedly mounted on the inner wall of the housing 9 , the fixed end is located outside the clamping plate 3 , and the other end extends toward the symmetry plane of the mechanism to the inside of the slider assembly 4 , thereby limiting the slider assembly 4 .

[0077] The mechanism movement process is as follows:

[0078] like Fig.14 As shown, when the switch is subjected to a large current shock such as a short-circuit current, the contacts are welded, and the clamping plate 3 is fixedly connected to the contacts. When the operator operates the top operating wheel 1 or the side operating wheel 12 to open the switch, the operating wheel drives the slider assembly 4 to slide in the direction of the limiter 11. Since the clamping plate 3 is fixedly connected to the contact, the mechanism cannot open the switch, the left end clamping plate 3 cannot be lifted upward, and the slider assembly 4 is blocked by the limiter 11, so that the top operating wheel 1 and the side operating wheel 12 cannot point to the opening position. The operator finds that the switch has failed and cannot be opened, thereby avoiding personal safety accidents.

[0079] like Fig.15 and Fig.16 As shown, when the switch is normally opened, the contacts can operate normally. When the operator operates the top operating wheel 1 and the side operating wheel 12 to perform the opening operation, the operating wheel drives the slider assembly 4 to slide toward the limit member 11. At this time, the left end clamp 3 is lifted upward, squeezing the limit member 11, causing the limit member 11 to deform to both sides of the mechanism. The end of the limit member 11 that was originally on the inner side of the slider assembly 4 is deformed to the outer side of the clamp 3, without limiting the slider assembly 4, and the top operating wheel 1 and the side operating wheel 12 point to the opening position.

[0080] Embodiment 3:

[0081] A switch operating mechanism, compared with the embodiment 2, the only difference is that: the transition section is an inclined plate, and one end of which is hinged to the inner wall of the housing 9; the elastic protruding section includes an abutment plate connected to the inclined plate, and an elastic expansion member 10 provided between the abutment plate and the inner wall of the housing 9. Preferably, the elastic expansion member 10 is a spring.

[0082] like Fig.17 and Fig.18As shown, the limiting members 11 are movably installed in pairs in the housing 9, one end of which is located outside the clamping plate 3 and is rotatably arranged in the housing 9, and the other end extends to the inner side of the slider assembly 4 toward the symmetry plane of the mechanism, playing a role in limiting the slider assembly 4. The limiting members 11 can be as shown in FIG. Figure 7 As shown in the counterclockwise rotation, the fixed side of the spring abuts against the inner wall of the housing 9 , and the force-applying side abuts against the limiting member 11 .

[0083] The rest is the same as Example 2.

[0084] Embodiment 4:

[0085] A switch operating mechanism, compared with the embodiment 2, the only difference is that: a slide groove is provided on the inner wall of the housing 9, the limiter 11 is slidably connected in the slide groove along the depth direction, the transition section includes an inclined plate, the elastic protruding section includes an abutment plate connected to the inclined plate, and an elastic telescopic member 10 is provided between the abutment plate and the inner wall of the housing 9. Preferably, the elastic telescopic member 10 is a spring.

[0086] like Fig.19 and Fig. 20 As shown, the limiting members 11 are movably installed in pairs in the shell 9 and can move in the inner wall of the shell 9 in the manner of a slider. One end is located on the outside of the splint 3, and the other end extends to the inside of the slider assembly 4, thereby limiting the slider assembly 4. The fixed side of the spring abuts against the inner wall of the shell 9, and the force-applying side abuts against the limiting member 11.

[0087] The rest is the same as Example 2.

[0088] In some specific embodiments, the transition section also includes a straight plate, one end of which is connected to the inclined plate and the other end is slidably abutted against the inner wall of the slide groove; one end of the abutment plate is connected to the inclined plate and the other end is slidably abutted against the inner wall of the slide groove.

[0089] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A switch operating mechanism, comprising a housing (9), a top operating wheel (1), a first gear (101), a slider assembly (4), a second gear (5), a rotating transmission member, an output driven member, and a spring assembly (6), wherein the slider assembly (4) comprises a second rack (42), the rotating transmission member comprises a clamping plate (3), the clamping plate (3) is arranged on a side close to an inner wall of the housing (9) relative to the second rack (42), and characterized in that: The operating mechanism further comprises a limiting member (11) provided on the inner wall of the housing (9). The limiting member (11) comprises a transition section and an elastic protruding section connected to each other, the transition section being connected to the inner wall of the shell (9), and the elastic protruding section elastically protruding from the inner wall of the shell (9) so that When the top operating wheel (1) drives the slider assembly (4) to slide horizontally, the elastic protruding section can abut against the slider assembly (4) in a limiting manner; When the slider assembly (4) slides laterally until the triggering clamp (3) rotates, the distal end of the clamp (3) passes through the transition section, abuts against the elastic protruding section and is stretched outward, so that the top operating wheel (1) can drive the slider assembly (4) to slide further laterally through the elastic protruding section.

2. The switch operating mechanism according to claim 1, characterized in that: The limiting members (11) are symmetrically arranged on opposite inner walls of the housing (9).

3. The switch operating mechanism according to claim 1, characterized in that: A limiting protrusion is provided on the outer wall at the distal end of the clamping plate (3); when the clamping plate (3) is rotated to open the elastic protruding section outward, the elastic protruding section can be in limiting contact with the limiting protrusion.

4. The switch operating mechanism according to claim 1, characterized in that: The limiting member (11) is a limiting member made of an elastic material; one end of the transition section is fixedly connected to the inner wall of the housing (9), and the other end is connected to the elastic protruding section.

5. The switch operating mechanism according to claim 4, characterized in that: The elastic protruding section is in an outwardly convex arc surface structure.

6. The switch operating mechanism according to claim 1, characterized in that: The transition section is an inclined plate, one end of which is hinged to the inner wall of the housing (9); The elastic protruding section comprises an abutment plate connected to the inclined plate, and an elastic telescopic member (10) provided between the abutment plate and the inner wall of the housing (9).

7. The switch operating mechanism according to claim 6, characterized in that: The elastic telescopic member (10) is a spring.

8. The switch operating mechanism according to claim 1, characterized in that: A slide groove is provided on the inner wall of the housing (9), and the limiting member (11) is slidably connected in the slide groove. The transition section comprises an inclined plate, and the elastic protruding section comprises an abutment plate connected to the inclined plate, and an elastic telescopic member (10) provided between the abutment plate and the inner wall of the housing (9).

9. The switch operating mechanism according to claim 8, characterized in that: The transition section further comprises a straight plate, one end of which is connected to the inclined plate, and the other end of which is in sliding contact with the inner wall of the slide groove; One end of the abutment plate is connected to the inclined plate, and the other end is slidably abutted against the inner wall of the slide groove.

10. The switch operating mechanism according to claim 8, characterized in that: The elastic telescopic member (10) is a spring.

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