Manually-driven self-locking device of electrically-operated circuit breaker drawer

Abstract

A manual driving self-locking device of an electrically-operated circuit breaker drawer is installed in the circuit breaker drawer and comprises a shell, a manual driving mechanism and a clutch mechanism in linkage with the manual driving mechanism, and the manual driving mechanism comprises a motor and a first gear connected with the motor. The clutch mechanism comprises a clutch and a second gear connected with the clutch, the driving mechanism and the clutch mechanism are in linkage connection through the first gear and the second gear by means of a chain, the structures of the manual driving mechanism and the clutch mechanism are improved, the two parts are integrated into one part, and the structure is simple. The first gear and the second gear are arranged in the shell, the shell is used for protecting the first gear and the second gear, and then the first gear and the second gear are connected through the chain to form transmission action, so that the complexity of manual function installation of the breaker drawer can be reduced, and personnel do not need to distinguish installation positions and different parts when installing the clutch mechanism and the manual driving mechanism; the mounting and dismounting efficiency is improved through integrated arrangement, and the production cost and the manufacturing cost can be reduced.

Description

Technical Field

[0001] The utility model relates to a manually driven self-locking device of an electrically operated circuit breaker drawer, belonging to the field of circuit breakers. Background Art

[0002] Universal circuit breakers are also called frame circuit breakers. They can connect, carry and disconnect currents under normal circuit conditions, and can also disconnect fault currents under specified abnormal circuit conditions. In terms of the application of universal circuit breakers, they are divided into fixed circuit breakers and withdrawable circuit breakers. Since withdrawable circuit breakers are installed in a drawer and can be moved in the drawer, they are convenient for detection and maintenance, and are therefore widely used.

[0003] The existing withdrawable circuit breaker requires two components, a clutch and a manual drive motor, to work for the manual function. When the user actually installs, the installation positions of the clutch and the motor are relatively far apart. For example, the utility model with publication number CN216530191U discloses a circuit breaker drawer seat compatible with electric and manual operations, including a base frame and an indicator seat, an indicator rod and a screw rod installed thereon. The base frame is also provided with a motor and a first micro switch on both sides of the screw rod, respectively. The lower rod body of the screw rod is provided with a reduction gear set through a clamping plate. The output shaft of the motor is connected to the screw rod through the reduction gear set. It is easy to cause problems such as confusion of installation components and wrong installation positions, resulting in the clutch and the motor being unable to realize manual functions and requiring repeated adjustments, which affects normal installation and use. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a manually driven self-locking device for an electrically operated circuit breaker drawer.

[0005] A manually driven self-locking device for an electrically operated circuit breaker drawer is installed in the circuit breaker drawer, and comprises a housing, a manual driving mechanism, and a clutch mechanism linked to the manual driving mechanism. The manual driving mechanism comprises a motor and a first gear connected to the motor, and the clutch mechanism comprises a clutch and a second gear connected to the clutch. The driving mechanism and the clutch mechanism are linked to each other through a chain through the first gear and the second gear. By improving the structures of the manual driving mechanism and the clutch mechanism, the two components are integrated into one component, and the first gear and the second gear are protected by the housing, and the first gear and the second gear are connected to form a transmission action through the chain, which can reduce the complexity of installing the manual function of the circuit breaker drawer, so that personnel do not need to distinguish between installation positions and different components when installing the clutch mechanism and the manual driving mechanism. The integrated setting improves the installation and disassembly efficiency, which is conducive to reducing production costs and manufacturing costs.

[0006] Furthermore, the first gear and the second gear are both arranged in the shell, the first gear is meshingly connected with a manual wheel for inserting the handle and manually rotating, the first gear is meshingly connected with a transmission gear, and the chain is meshingly connected to the transmission gear. The first gear and the second gear are protected in the shell, and can be directly installed during installation without multiple assembly, and the shell can also avoid the influence of the external environment on the internal components, ensuring normal use, and the manual wheel is used for personnel to insert the handle to use the manual function.

[0007] Preferably, a slot is provided on the shell, and a socket matching the handle is provided on the manual wheel. The slot is located in front of the socket, and the slot enables the socket on the manual wheel inside the shell to be displayed to the outside, making it easy for personnel to insert and drive.

[0008] Furthermore, a locking structure is installed in the shell, the circuit breaker drawer includes a bottom plate, the locking structure includes a fixed plate arranged on the shell, a cam is rotatably connected to the fixed plate, a baffle movable in the vertical direction is provided in front of the first gear, the baffle includes a first position for blocking the socket and a second position for exposing the socket by moving upward through a rotation action with the cam, the second position of the baffle is used for inserting a handle to drive the manual wheel to rotate, and the locking structure is provided to increase the manual locking function, when the handle needs to be inserted into the manual wheel, the cam is rotated, and the cam drives the baffle to move upward to expose the socket, and under normal conditions the baffle blocks the socket to prevent personnel from accidentally touching the electric drive mechanism when operating the manual drive mechanism, thereby causing safety problems.

[0009] Furthermore, the baffle includes a driving portion and a shielding portion, the cam is provided with a driving arm, the driving arm abuts against the driving portion so that the baffle can move in the vertical direction following the cam, and the shielding portion is located in front of the socket.

[0010] Furthermore, the baffle also includes a trigger part, and a micro switch for unlocking the electric drive mechanism is provided on the shell. When the baffle is in the second position, the trigger part triggers the micro switch to send a signal. When the manual function is not in use, the baffle can block the jack on the manual wheel and trigger the micro switch through the trigger part to unlock the electric drive mechanism. When the manual function is in use, the micro switch is not triggered, is locked, and cannot be used. It also has the function of preventing accidental touch.

[0011] Furthermore, a sliding groove is provided on the shell, a fixing pin is provided on the baffle, and the baffle is slidably connected to the sliding groove via the fixing pin. The fixing pin and the sliding groove cooperate to enable the operating rod to slide in the shell, thereby forming a locking function.

[0012] Preferably, a locking arm is further provided on the cam, the circuit breaker drawer includes a bottom plate, a through slot is provided at the bottom of the shell, the locking arm is inserted into the through slot through the rotation of the cam to lock with the bottom plate so that the circuit breaker drawer cannot move, and when the position of the circuit breaker drawer needs to be locked, the locking arm is inserted into the through slot and then plugged and connected with the bottom plate.

[0013] Preferably, the manual drive mechanism includes a first rotating shaft connected to the motor, the first gear is fixedly arranged on the first rotating shaft, and the clutch mechanism includes a second rotating shaft, and the second gear is fixedly arranged on the second rotating shaft.

[0014] The beneficial effects of the utility model are as follows: by improving the structure of the manual drive mechanism and the clutch mechanism, the two components are integrated into one component, and the first gear and the second gear are protected by a shell, and the first gear and the second gear are connected by a chain to form a transmission action, which can reduce the complexity of installing the manual function of the circuit breaker drawer, so that personnel do not need to distinguish between installation positions and different components when installing the clutch mechanism and the manual drive mechanism. The integrated setting improves the installation and disassembly efficiency, which is conducive to reducing production costs and manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0016] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the utility model with some structures removed;

[0018] Figure 3 For this utility model Figure 2 A schematic diagram of a structure further removing part of the structure;

[0019] In the figure, 1. shell; 11. slot; 12. sliding slot; 13. through slot; 2. motor; 21. first gear; 22. chain; 23. first rotating shaft; 24. transmission gear; 3. clutch; 31. second gear; 32. second rotating shaft; 4. manual wheel; 41. jack; 5. locking structure; 51. fixing plate; 52. cam; 521. driving arm; 522. locking arm; 53. baffle; 531. driving part; 532. shielding part; 533. triggering part; 534. fixing pin; 54. micro switch. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0021] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0022] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.

[0023] like Figure 1-3 As shown, an embodiment of a manual drive self-locking device of an electrically operated circuit breaker drawer of the utility model is installed in the circuit breaker drawer, including a housing 1, a manual drive mechanism and a clutch mechanism linked with the manual drive mechanism, the manual drive mechanism includes a motor 2 and a first gear 21 connected to the motor 2, the clutch mechanism includes a clutch 3 and a second gear 31 connected to the clutch 3, the drive mechanism and the clutch mechanism are linked and connected through the first gear 21 and the second gear 31 through a chain 22, by improving the structure of the manual drive mechanism and the clutch mechanism, the two components are integrated into one component, and the first gear 21 and the second gear 31 are protected by the housing 1, and then the first gear 21 and the second gear 31 are connected through the chain 22 to form a transmission action, which can reduce the complexity of installing the manual function of the circuit breaker drawer, so that personnel do not need to distinguish between installation positions and different components when installing the clutch mechanism and the manual drive mechanism, and the integrated setting improves the installation and disassembly efficiency, which is conducive to reducing production costs and manufacturing costs.

[0024] The first gear 21 and the second gear 31 are both arranged in the shell 1. The first gear 21 is meshedly connected with a manual wheel 4 for inserting a handle and manually rotating. The first gear 21 is meshedly connected with a transmission gear 24. The chain 22 is meshedly connected to the transmission gear 24. The first gear 21 and the second gear 31 are protected in the shell 1. They can be directly installed during installation without multiple assembly. The shell 1 can also avoid the influence of the external environment on the internal components to ensure normal use. The manual wheel 4 is used for people to insert the handle to use the manual function.

[0025] The shell 1 is provided with a slot 11, and the manual wheel 4 is provided with a socket 41 matching the handle. The slot 11 is located in front of the socket 41. The slot 11 can make the socket 41 on the manual wheel 4 inside the shell 1 visible to the outside, making it easy for people to insert and drive.

[0026] A locking structure 5 is installed in the housing 1. The circuit breaker drawer includes a bottom plate. The locking structure 5 includes a fixed plate 51 arranged on the housing 1. A cam 52 is rotatably connected to the fixed plate 51. A baffle 53 that can move in the vertical direction is provided in front of the first gear 21. The baffle 53 includes a first position that blocks the socket 41 and a second position that moves upward to expose the socket 41 through a rotation action with the cam 52. The second position of the baffle 53 is used to insert a handle to drive the manual wheel 4 to rotate. The locking structure 5 can increase the manual locking function. When the handle needs to be inserted into the manual wheel 4, the cam 52 is rotated, and the cam 52 drives the baffle 53 to move upward to expose the socket 41. Under normal conditions, the baffle 53 blocks the socket 41 to prevent personnel from accidentally touching the electric drive mechanism when operating the manual drive mechanism, thereby causing safety problems.

[0027] The baffle 53 includes a driving portion 531 and a shielding portion 532 . The cam 52 is provided with a driving arm 521 . The driving arm 521 abuts against the driving portion 531 so that the baffle 53 can move in the vertical direction following the cam 52 . The shielding portion 532 is located in front of the insertion hole 41 .

[0028] The baffle 53 also includes a trigger part 533, and a micro switch 54 for unlocking the electric drive mechanism is provided on the shell 1. When the baffle 53 is in the second position, the trigger part 533 triggers the micro switch 54 to send a signal. When the manual function is not in use, the baffle 53 can block the socket 41 on the manual wheel 4, and trigger the micro switch 54 through the trigger part 533, so that the electric drive mechanism is unlocked and can be used. When the manual function is in use, the micro switch 54 is not triggered, is locked, and cannot be used, and also has the function of preventing accidental touch.

[0029] The housing 1 is provided with a sliding groove 12, and the baffle 53 is provided with a fixing pin 534. The baffle 53 is slidably connected to the sliding groove 12 via the fixing pin 534. The fixing pin 534 cooperates with the sliding groove 12 to enable the operating rod to slide in the housing 1, thereby forming a locking function.

[0030] The cam 52 is also provided with a locking arm 522. The circuit breaker drawer includes a bottom plate. A through slot 13 is provided at the bottom of the housing 1. The locking arm 522 is inserted into the through slot 13 by the rotation of the cam 52 to lock with the bottom plate so that the circuit breaker drawer cannot move. When the position of the circuit breaker drawer needs to be locked, the locking arm 522 is inserted into the through slot 13 and then plugged and connected with the bottom plate.

[0031] The manual drive mechanism includes a first rotating shaft 23 connected to the motor 2 , the first gear 21 is fixedly disposed on the first rotating shaft 23 , and the clutch mechanism includes a second rotating shaft 32 , the second gear 31 is fixedly disposed on the second rotating shaft 32 .

[0032] The structure of the clutch 3 may refer to the Chinese utility model with publication number CN103244573B.

[0033] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed. The present invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A manually driven self-locking device for an electrically operated circuit breaker drawer, installed in the circuit breaker drawer, characterized in that: It includes a shell, a manual driving mechanism and a clutch mechanism linked to the manual driving mechanism, the manual driving mechanism includes a motor and a first gear connected to the motor, the clutch mechanism includes a clutch and a second gear connected to the clutch, and the driving mechanism and the clutch mechanism are linked to each other through a chain via the first gear and the second gear.

2. The manually driven self-locking device of the electrically operated circuit breaker drawer according to claim 1, characterized in that: The first gear and the second gear are both arranged in the housing, the first gear is meshedly connected with a manual wheel for inserting a handle to manually rotate, the first gear is meshedly connected with a transmission gear, and the chain is meshedly connected with the transmission gear.

3. The manually driven self-locking device of the electrically operated circuit breaker drawer according to claim 2, characterized in that: The housing is provided with a slot, the manual wheel is provided with a socket matching the handle, and the slot is located in front of the socket.

4. The manually driven self-locking device of the electrically operated circuit breaker drawer according to claim 1, characterized in that: A locking structure is installed in the shell, and the locking structure includes a fixed plate arranged on the shell, and a cam is rotatably connected to the fixed plate. A baffle that can move in a vertical direction is provided in front of the first gear, and the baffle includes a first position for covering the socket and a second position for exposing the socket by moving upward through a rotation action with the cam. The second position of the baffle is used for inserting a handle to drive the manual wheel to rotate.

5. The manually driven self-locking device of the electrically operated circuit breaker drawer according to claim 4, characterized in that: The baffle comprises a driving part and a shielding part. The cam is provided with a driving arm. The driving arm abuts against the driving part so that the baffle can move in the vertical direction following the cam. The shielding part is located in front of the insertion hole.

6. The manually driven self-locking device of the electrically operated circuit breaker drawer according to claim 5, characterized in that: The baffle further comprises a triggering part, and a micro switch for unlocking the electric drive mechanism is provided on the housing. When the baffle is located at the second position, the triggering part triggers the micro switch to send a signal.

7. The manually driven self-locking device of the electrically operated circuit breaker drawer according to claim 4, characterized in that: The shell body is provided with a sliding groove, the baffle plate is provided with a fixing pin, and the baffle plate is slidably connected with the sliding groove via the fixing pin.

8. The manually driven self-locking device of the electrically operated circuit breaker drawer according to claim 4, characterized in that: The cam is also provided with a locking arm, the circuit breaker drawer includes a bottom plate, and the bottom of the shell is provided with a through slot. The locking arm is inserted into the through slot through the rotation of the cam to lock with the bottom plate so that the circuit breaker drawer cannot move.

9. The manually driven self-locking device of the electrically operated circuit breaker drawer according to claim 1, characterized in that: The manual drive mechanism comprises a first rotating shaft connected to the motor, the first gear is fixedly arranged on the first rotating shaft, and the clutch mechanism comprises a second rotating shaft, the second gear is fixedly arranged on the second rotating shaft.

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