Drawer type switch

Abstract

The utility model relates to the technical field of low-voltage electric appliances, in particular to a drawer type switch, which comprises a coupler, a drawer seat, a switch body and an electric driving device. One end of the coupling body forms an output end for outputting force outwards, and the other end of the coupling body forms a matching end; the matching shaft sleeve is arranged on the matching end; an input end for inputting external driving force is formed on the matching shaft sleeve; the input end is used for being connected with a driving shaft of an electric driving device, and the output end is used for being connected with a lead screw transmission mechanism of a drawer base to drive the switch body to move relative to the drawer base; when the electric driving device acts, if the driving shaft is not inserted into the input end and the matching shaft sleeve is located at the first position, the driving shaft rotates by a certain angle and is inserted into the input end under the action of the elastic reset piece, and the matching shaft sleeve is located at the second position. According to the utility model, connection between the electric driving device and the lead screw transmission mechanism of the drawer type switch can be realized through the coupler, and the problem of burnout caused by idling of the motor is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a drawer-type switch. Background Art

[0002] Drawer-type switches are common low-voltage electrical appliances used to distribute electric energy and protect circuits and equipment from the hazards of faults such as short circuits, overloads, single-phase grounding, and undervoltage. Due to their characteristics such as convenient maintenance and repair, they are widely used in distribution systems.

[0003] The remote driving device of the drawer base is a device that can automatically operate the drawer base to push in and pull out the circuit breaker body through remote control, and adapts to the interlocking and indication functions of the original three-position device of the drawer base.

[0004] Operators can use an electric driving device to replace the existing handle device to achieve remote control of the drawer-type circuit breaker and complete the pushing in and pulling out of the circuit breaker body in the drawer base. By increasing the working distance, the personal safety of the operators is greatly guaranteed.

[0005] The electric driving device mainly includes a driving module, a hand controller, etc. Among them, the coupling is an important part of the driving module. Through the coupling, the connection between the electric operating mechanism in the driving module and the drawer base screw rod in the circuit breaker can be realized. However, since the driving module is a whole, it is impossible to manually adjust the electric operating drive shaft to fit perfectly with the coupling, which is likely to cause idling and burn out the motor. Summary of the Utility Model

[0006] The purpose of the utility model is to solve the problems existing in the background art and propose a drawer-type switch. Through the coupling, the connection between the electric driving device and the screw rod transmission mechanism of the drawer-type switch can be realized, and the problem of motor burnout caused by idling is avoided.

[0007] The technical solution of the present utility model is a drawer - type switch, which includes a coupling, a drawer base, a switch body, and an electric driving device. The coupling includes a coupling body for connection, an elastic reset member, and a mating bushing; one end of the coupling body constitutes an output end for outputting force outward, and the other end constitutes a mating end; the mating bushing is arranged on the mating end and rotates synchronously with the coupling body and can slide relative to the coupling body between a first position and a second position. An input end for inputting external driving force is formed on the mating bushing; the elastic reset member is sleeved on the coupling body and is located between the output end and the mating bushing; the input end is used to connect with the driving shaft of the electric driving device, and the output end is used to connect with the screw drive mechanism of the drawer base. By the action of the electric driving device, the coupling is driven to drive the drawer base to act, driving the switch body to move relative to the drawer base; when the electric driving device acts, if the driving shaft is not inserted into the input end, the mating bushing is in the first position. As the driving shaft rotates a certain angle, under the action of the elastic reset member, the driving shaft is inserted into the input end, and the mating bushing is in the second position. In an optional embodiment, an abutting portion is formed on the other end of the coupling body corresponding to the output end. One end of the elastic reset member abuts against the abutting portion, and the other end abuts against the mating bushing.

[0008] In an optional embodiment, it further includes a limiting component. The limiting component is fixedly arranged on the limiting end of the mating end and is located inside the mating bushing, so that the mating bushing will not slide off the coupling body.

[0009] In an optional embodiment, the limiting component includes at least one washer and a circlip.

[0010] In an optional embodiment, one end of the mating bushing facing the coupling body forms a first mating hole, and the shape of the first mating hole is adapted to that of the mating end.

[0011] In an optional embodiment, the elastic reset member is a spring.

[0012] In an optional embodiment, one end of the mating bushing facing the driving shaft forms a second mating hole; the shape of the second mating hole is adapted to that of the corresponding end of the driving shaft.

[0013] In an optional embodiment, an adjusting inclined surface is arranged on the outer edge of the second mating hole for abutting against the driving shaft when the driving shaft disengages from the second mating hole.

[0014] Compared with the prior art, the present utility model has the following beneficial technical effects:

[0015] The utility model can realize the connection between an electric drive device and a lead screw transmission mechanism of a drawer-type switch through a coupling. One end of the coupling is connected to the handle hole of the lead screw transmission mechanism through the output end of the coupling body, and at this time, the coupling is rotated so that the output end is completely fitted with the inner hexagonal hole of the handle hole. At this time, one end of the drive shaft facing the mating bushing abuts against the adjusting inclined surface, pressing against the mating bushing to make the mating bushing move towards the output end. When the motor of the electric drive device starts to work and the drive shaft rotates, after turning a certain angle, one end of the drive shaft facing the mating bushing can be completely fitted with the second mating hole. Under the action of the elastic resetting member, the mating bushing resets. At this time, the lead screw transmission mechanism, the coupling, and the drive shaft form an integral body. Driven by the motor, the drawer seat can be remotely rocked in and out, and the problem of the motor being burned due to idling is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a drawer-type switch in an embodiment of the utility model;

[0017] Figure 2 It is a schematic structural diagram of the installation position of the coupling in an embodiment of the utility model;

[0018] Figure 3 It is a schematic installation structure diagram of the coupling, the lead screw transmission mechanism, and the rotating shaft in an embodiment of the utility model;

[0019] Figure 4 It is a schematic structural diagram of the mating bushing in an embodiment of the utility model;

[0020] Figure 5 It is a schematic structural diagram of the limit component in an embodiment of the utility model;

[0021] Figure 6 It is one of the structural diagrams of the mating bushing in an embodiment of the utility model;

[0022] Figure 7 It is the second structural diagram of the mating bushing in an embodiment of the utility model.

[0023] Reference numerals: 1, coupling; 11, coupling body; 111, output end; 1111, abutting part; 112, mating end; 1121, limiting end; 12, elastic resetting member; 13, mating bushing; 131, input end; 132, second mating hole; 133, adjusting inclined surface; 134, bushing abutting part; 135, first mating hole; 14, limit component; 2, drawer seat; 21, lead screw transmission mechanism; 211, handle hole; 3, switch body; 4, electric drive device; 41, motor; 42, gear set; 43, drive shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following describes in detail the specific embodiments of the present utility model in conjunction with the accompanying drawings. However, the applicant's description of the embodiments is not a limitation on the technical solutions. Any change in form rather than substance based on the concept of the present utility model should be regarded as the protection scope of the present utility model.

[0025] In the following description, all concepts related to directions or orientations such as up, down, left, right, front, and back are based on the positions shown in the corresponding drawings. It is only for the convenience of describing the technical solutions provided by the present utility model in conjunction with the drawings and simplifying the description, and thus cannot be understood as a special limitation on the technical solutions provided by the present utility model.

[0026] A kind of break-drawer type switch proposed by the present utility model, as Figures 1 to 3 shown, includes a coupling 1, a drawer seat 2, a switch body 3, and an electric driving device 4. The coupling 1 includes a coupling body 11 for connection, an elastic reset member 12, and a mating bushing 13. One end of the coupling body 11 constitutes an output end 111 for outputting force outward, and the other end constitutes a mating end 112. The mating bushing 13 is arranged on the mating end 112 and rotates synchronously with the coupling body 11 and can slide relative to the coupling body 11 between a first position and a second position. An input end 131 for inputting external driving force is formed on the mating bushing 13. The elastic reset member 12 is sleeved on the coupling body 11 and is located between the output end 111 and the mating bushing 13. The input end 131 is used to connect with the driving shaft 43 of the electric driving device 4, and the output end 111 is used to connect with the screw drive mechanism 21 of the drawer seat 2. The electric driving device 4 acts to drive the coupling 1 and drive the drawer seat 2 to act, driving the switch body 3 to move relative to the drawer seat 2. When the electric driving device 4 acts, if the driving shaft 43 is not inserted into the input end 131, the mating bushing 13 is in the first position. As the driving shaft 43 rotates a certain angle, under the action of the elastic reset member 12, the driving shaft 43 is inserted into the input end 131, and the mating bushing 13 is in the second position. Specifically, as Figure 4 shown, a abutting portion 1111 is formed on the other end of the coupling body 11 corresponding to the output end 111. One end of the elastic reset member 12 abuts on the abutting portion 1111, and the other end abuts on the mating bushing 13. Preferably, the elastic reset member 12 is a spring.

[0027] In this embodiment, as Figure 5As shown in the figure, the coupling 1 further includes a limiting component 14 which is fixedly arranged on the limiting end 1121 of the mating end 112 and located within the mating sleeve 13, so that the mating sleeve 13 will not slide off the coupling body 11. The limiting component 14 includes at least one washer and a circlip. The limiting component 14 can also be a fastening connection of screws, bolts, or can adopt riveting, welding, etc., as long as the mating sleeve 13 does not slide off the coupling body 11. Preferably, the diameter of the washer is smaller than the second mating hole 132 and larger than the first mating hole 135.

[0028] In this embodiment, as Figures 6 - 7 shown, one end of the mating sleeve 13 facing the coupling body 11 forms a first mating hole 135, and the shape of the first mating hole 135 is adapted to that of the mating end 112; the diameter of the second mating hole 132 is larger than that of the first mating hole 135, and a sleeve abutting portion 134 is arranged on the outer edge of the first mating hole 135; the outer peripheral contour of the output end 111 is a regular hexagon, then a regular hexagon hole is arranged on the lead screw transmission mechanism 21. Similarly, for the mating end 112 and the first mating hole 135, and the second mating hole 132 and the drive shaft 43. One end of the coupling 1 is connected to the lead screw transmission mechanism 21 through the output end 111 of the coupling body 11 and the handle hole 211 of the lead screw transmission mechanism 21. At this time, when the coupling 1 is rotated, the output end 111 is fully fitted with the inner hexagonal hole of the handle hole 211. The electric drive device 4 is an integral structure, including a motor 41, a gear set 42, and a drive shaft 43; since the electric drive device 4 is an integral structure, it is impossible to manually adjust the drive shaft 43 so that its end facing the drive shaft 43 is exactly fitted with the second mating hole 132; after using the coupling 1 in this embodiment, if the drive shaft 43 is not inserted into the input end 131, that is, the end of the drive shaft 43 facing the mating sleeve 13 is not fully fitted with the second mating hole 132, when the drive shaft 43 and the input end 131 do not form a hole-shaft fit, the end of the drive shaft 43 facing the mating sleeve 13 abuts against the adjusting inclined surface 133, pushing against the mating sleeve 13 to make the mating sleeve 13 move towards the output end 111, and the mating sleeve 13 is in the first position; when the motor 41 of the electric drive device 4 starts to work and the drive shaft 43 rotates, after turning a certain angle, the end of the drive shaft 43 facing the mating sleeve 13 can be fully fitted with the second mating hole 132. Under the action of the elastic resetting member 12, the mating sleeve 13 resets, and the drive shaft 43 is inserted into the input end 131, that is, the drive shaft 43 and the input end 131 form a hole-shaft fit, and the mating sleeve 13 is in the second position. At this time, the lead screw transmission mechanism 21, the coupling 1, and the drive shaft 43 form an integral body. Driven by the motor, the drawer seat 2 can be remotely pushed in and out, and there will be no phenomenon of the motor idling and burning out.

[0029] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited thereto. Various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those skilled in the relevant technical field.

Claims

1. A drawer-type switch, comprising a coupling (1), a drawer seat (2), a switch body (3), and an electric drive device (4), characterized in that: The coupling (1) comprises a coupling body (11) for connection, an elastic reset member (12) and a matching sleeve (13); one end of the coupling body (11) constitutes an output end (111) for outputting force outward, and the other end constitutes a matching end (112); the matching sleeve (13) is arranged on the matching end (112) and rotates synchronously with the coupling body (11) and can slide relative to the coupling body (11) between a first position and a second position, and the matching sleeve (13) is constituted with an input end (131) for inputting external driving force; the elastic reset member (12) is sleeved on the coupling body (11) and is located between the output end (111) and the matching sleeve (13); The input end (131) is used to be connected to the drive shaft (43) of the electric drive device (4), and the output end (111) is used to be connected to the screw transmission mechanism (21) of the drawer seat (2). The electric drive device (4) drives the coupling (1) and drives the drawer seat (2) to move, thereby driving the switch body (3) to move relative to the drawer seat (2); when the electric drive device (4) is in motion, if the drive shaft (43) is not inserted into the input end (131), the matching shaft sleeve (13) is in a first position; as the drive shaft (43) rotates a certain angle, the drive shaft (43) is inserted into the input end (131) under the action of the elastic reset member (12), and the matching shaft sleeve (13) is in a second position.

2. A drawer-type switch according to claim 1, characterized in that: A supporting portion (1111) is formed on the other end of the coupling body (11) corresponding to the output end (111), one end of the elastic reset member (12) is against the supporting portion (1111), and the other end is against the matching sleeve (13).

3. A drawer-type switch according to claim 1 or 2, characterized in that: It also includes a limiting assembly (14), which is fixedly arranged on the limiting end (1121) of the mating end (112) and located in the mating sleeve (13), so that the mating sleeve (13) will not slide off the coupling body (11).

4. A drawer-type switch according to claim 3, characterized in that: The limiting assembly (14) comprises at least one washer and a retaining spring.

5. A drawer-type switch according to claim 4, characterized in that: A first matching hole (135) is formed at one end of the matching sleeve (13) facing the coupling body (11), and the first matching hole (135) is matched with the shape of the matching end (112).

6. A drawer-type switch according to claim 5, characterized in that: The elastic reset member (12) is a spring.

7. A drawer-type switch according to claim 1, characterized in that: A second matching hole (132) is formed at one end of the matching sleeve (13) facing the drive shaft (43); the second matching hole (132) is matched with the shape of the corresponding end of the drive shaft (43).

8. The drawer-type switch according to claim 7, characterized in that: An adjustment slope (133) is provided on the outer edge of the second matching hole (132) for abutting against the driving shaft (43) when the driving shaft (43) escapes from the second matching hole (132).

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