Manual and electric clutch structure

Abstract

The utility model discloses a manual and electric clutch structure. An operating shaft is connected with a power source through a transmission structure, a travel switch is arranged on the outer side of the operating shaft, the travel switch is electrically connected with the power source, a lever is arranged between the operating shaft and the travel switch, the lever is provided with a power arm and a resisting arm, and the operating shaft is arranged in a rotating area of the power arm; the lever has a first state and a second state, in the first state, the power arm of the lever is shielded on the insertion path of the operating handle, and in the second state, the power arm of the lever is lifted, the resisting arm is pressed downwards, the travel switch is closed, and the power source of the operating shaft is cut off. According to the utility model, the travel switch is turned off through the rotation of the lever so as to cut off the power source of the operating shaft, so that the stability of the closing of the travel switch is improved, the stability of signals is ensured, the power source of the operating shaft is effectively cut off, and the reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a flashlight clutch structure. Background Art

[0002] The operating mechanism can drive the operating shaft to close or open the circuit breaker through the power source, but the flashlight clutch function needs to be realized during electric operation to prevent the operating shaft from still rotating when the handle is inserted and the handle is not thrown off.

[0003] Chinese utility model patent CN216849686U discloses a manual override device for an inflatable cabinet. The manual override device is arranged on one side of the operating shaft and includes a drive rod and a micro switch. The drive rod has a first position when installed and a second position when the handle is inserted, which is driven by the handle to switch the micro switch. The micro switch is electrically connected to the power source and is used to switch the power source to an inoperative state. When the handle is inserted, the power source can be switched to an inoperative state by the micro switch, and the handle can drive the operating shaft to move. The drive rod includes a drive head, which is spherical or semicircular. The drive head is blocked in the insertion path of the handle and is driven horizontally by the handle. This straight-top manual override device allows a small amount of movement of the drive rod and requires high precision of the drive head and wrench. If the size of the drive head or wrench is large, if the size is too small, the drive rod may not press the micro switch, resulting in no signal. If the size is too large, the micro switch may be damaged. In both cases, it cannot effectively switch to the power-off state, and the reliability is insufficient. Utility Model Content

[0004] In order to solve the shortcomings of the above-mentioned existing manual priority operation devices, such as small allowable movement and insufficient reliability, the applicant provides a reasonably structured flashlight clutch structure with a lever that allows large allowable movement and improves reliability.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A flashlight clutch structure, wherein an operating shaft is connected to a power source through a transmission structure, a travel switch is provided on the outside of the operating shaft, the travel switch is electrically connected to the power source, a lever is provided between the operating shaft and the travel switch, the lever is provided with a power arm and a resistance arm, and the operating shaft is arranged in a rotation area of ​​the power arm; the lever has a first state and a second state, in the first state, the power arm of the lever blocks the insertion path of the operating handle, in the second state, the power arm of the lever is lifted, the resistance arm is pressed down, the travel switch is closed, and the power source of the operating shaft is locked.

[0007] As a further improvement of the above technical solution:

[0008] When the lever is in the first state, the power arm hangs down toward the operating axis and the resistance arm lifts up.

[0009] When the lever is in the first state, the minimum distance d between the bottom surface of the power arm and the outer surface of the operating shaft is greater than or equal to 0 and less than the radius R of the contour line of the operating handle insertion area.

[0010] A spring piece is arranged between the resistance arm of the lever and the travel switch, and a switch button of the travel switch is arranged below the spring piece.

[0011] One end of the spring is a fixed end fixed on the travel switch, and the other end of the spring is a free end extending toward the bottom of the resistance arm of the lever.

[0012] The travel switch is located outside the rotation area of ​​the resistance arm of the lever, and a part of the spring is located within the rotation area of ​​the resistance arm.

[0013] A torsion spring is connected to the power arm of the lever.

[0014] An inclined surface is provided on the side of the power arm of the lever facing the insertion direction of the operating handle.

[0015] The side of the inclined surface close to the resistance arm is transitioned through a curved surface.

[0016] A mounting hole is provided in the middle of the lever, and the lever is rotatably connected to the base through a fixing pin at the mounting hole, and the fixing pin constitutes a rotation fulcrum of the lever.

[0017] The beneficial effects of the utility model are as follows:

[0018] The utility model realizes closing of the travel switch to cut off the power source of the operating shaft by rotating the lever. The lever allows a large amount of movement, and the dimensional deviation of the operating handle can be absorbed by the lever and the spring. Even if the operating handle has a dimensional deviation (too large or too small), most of the dimensional deviation is basically absorbed by the lever and the spring. The dimensional deviation transmitted to the travel switch is very small and basically has no impact. The stability of the travel switch closure is improved, the stability of the signal is guaranteed, the power source of the operating shaft is effectively cut off, and the reliability is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the first state of the utility model.

[0020] Figure 2 This is a schematic diagram of the second state of the present invention.

[0021] Figure 3 Schematic diagram of the lever structure.

[0022] In the figure: 1. Motor upper cover; 2. Operating shaft; 3. Motor drive end; 4. Lever; 41. Mounting hole; 42. Power arm; 43. Resistance arm; 44. Inclined surface; 45. Arc surface; 6. Travel switch; 61. Switch button; 62. Shrapnel; 7. Fixing pin; 8. Base; 9. Torsion spring; 10. Outline of the operating handle insertion area. DETAILED DESCRIPTION

[0023] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0024] like Figure 1 、 Figure 2 As shown, the utility model provides a flashlight clutch structure, in which the operating shaft 2 is passed through the motor upper cover 1, and a motor drive end 3 is provided on one side of the motor upper cover 1. The motor drive end 3 is connected to the operating shaft 2 through a transmission structure to provide a power source for the operating shaft 2. A lever 4 and a travel switch 6 are provided on the outside of the operating shaft 2. The lever 4 is provided between the operating shaft 2 and the travel switch 6, and a spring 62 is provided between the lever 4 and the travel switch 6. The travel switch 6 is electrically connected to the motor drive end 3 to control the on and off of the power of the motor drive end 3. When the travel switch 6 is disconnected, the motor drive end 3 is unlocked, and the motor drive end 3 can provide a power source for the operating shaft 2; when the travel switch 6 is closed, the motor drive end 3 is locked, and the operating shaft 2 can only be operated manually.

[0025] like Figures 1 to 3 As shown, a mounting hole 41 is provided in the middle of the lever 4. The lever 4 is rotatably connected to the base 8 at the mounting hole 41 through a fixing pin 7. The base 8 is fixed to the upper cover plate 1 of the motor. The fixing pin 7 constitutes the rotation fulcrum of the lever 4. The lever 4 can rotate around the center of the fixing pin 7. The cross section S passing through the center axis C of the mounting hole 41 is used as a dividing surface to divide the lever 4 into a power arm 42 and a resistance arm 43. The operating shaft 2 is arranged in the rotation area of ​​the power arm 42 of the lever 4, and the limit switch 6 is located outside the rotation area of ​​the resistance arm 43 of the lever 4; one end of the spring 62 is a fixed end fixed to the limit switch 6, and the other end of the spring 62 is a free end extending toward the bottom of the resistance arm 43 of the lever 4. A part of the spring 62 is located in the rotation area of ​​the resistance arm 43, and the switch button 61 of the limit switch 6 is arranged below the spring 62. A torsion spring 9 is connected to the power arm 42 of the lever 4. As shown Figure 1As shown, in the first state, the power arm 42 of the lever 4 hangs down toward the operating shaft 2, and the resistance arm 43 lifts upward: part of the rod of the power arm 42 enters the insertion area of ​​the operating handle, and the minimum distance d between the bottom surface of the power arm 42 and the outer surface of the operating shaft 2 is greater than or equal to 0 and less than the radius R of the contour line 10 of the operating handle insertion area, that is, in the first state, the power arm 42 enters the insertion area of ​​the operating handle to ensure that it is blocked on the insertion path of the operating handle. The resistance arm 43 is disengaged from the spring piece 62 and does not contact each other, and the spring piece 62 is also disengaged from the switch button 61 of the travel switch 6 and does not contact each other. In this state, the travel switch 6 is disconnected, and the motor drive end 3 can provide a power source to the operating shaft 2. As shown Figure 2 As shown, in the second state, the operating handle is inserted into the operating shaft 2, and the operating handle pushes the power arm 42 of the lever 4 away from its insertion path. The lever 4 rotates around the center of the fixed pin 7. The power arm 42 is lifted by the operating handle, and the resistance arm 43 is pressed downward, thereby pressing the free end of the spring 62 downward, causing the spring 62 to press downward around its fixed end. The spring 62 presses on the switch button 61 of the limit switch 6, thereby turning off the switch button 61. In this state, the limit switch 6 is closed, and the operating shaft 2 can only be operated manually. After the operating handle is removed from the operating shaft 2, the lever 4 returns to its original position under the action of the torsion spring 9, returning to the first state.

[0026] like Figure 3 As shown, a slope 44 is provided on the side of the power arm 42 of the lever 4 facing the insertion direction of the operating handle. The slope 44 transitions to the side of the resistance arm 43 through an arc surface 45. The slope 44 and the arc surface 45 guide the operating handle, making it easier to insert the operating handle and push the power arm 42 away.

[0027] The present invention achieves closing of the travel switch 6 by rotating the lever 4 to cut off the power source of the operating shaft 2. The lever 4 allows a large amount of movement, and the dimensional deviation of the operating handle can be absorbed by the lever 4 and the spring 62. Even if the operating handle has a dimensional deviation (too large or too small), most of the dimensional deviation is basically absorbed by the lever 4 and the spring 62. The dimensional deviation transmitted to the travel switch 6 is very small and basically has no impact, thereby improving the stability of the travel switch 6 closing, ensuring the stability of the signal, effectively cutting off the power source of the operating shaft 2, and improving reliability.

[0028] The above description is an explanation of the present invention, not a limitation of the present invention. The present invention may be modified in any form without violating the spirit of the present invention.

Claims

1. A manual electric clutch structure, wherein an operating shaft (2) is connected to a power source through a transmission structure, a travel switch (6) is provided on the outside of the operating shaft (2), and the travel switch (6) is electrically connected to the power source, characterized in that: A lever (4) is provided between the operating shaft (2) and the travel switch (6), the lever (4) being provided with a power arm (42) and a resistance arm (43), and the operating shaft (2) being arranged in a rotation area of ​​the power arm (42); the lever (4) having a first state and a second state, in the first state, the power arm (42) of the lever (4) is blocked on the insertion path of the operating handle, and in the second state, the power arm (42) of the lever (4) is lifted, the resistance arm (43) is pressed down, the travel switch (6) is closed, and the power source of the operating shaft (2) is locked.

2. The manual electric clutch structure according to claim 1, characterized in that: When the lever (4) is in the first state, the power arm (42) hangs down toward the operating shaft (2), and the resistance arm (43) lifts upward.

3. The manual electric clutch structure according to claim 2, characterized in that: When the lever (4) is in the first state, the minimum distance d between the bottom surface of the power arm (42) and the outer surface of the operating shaft (2) is greater than or equal to 0 and less than the radius R of the operating handle insertion area contour line (10).

4. The manual electric clutch structure according to claim 1, characterized in that: A spring piece (62) is provided between the resistance arm (43) of the lever (4) and the travel switch (6), and a switch button (61) of the travel switch (6) is provided below the spring piece (62).

5. The manual electric clutch structure according to claim 4, characterized in that: One end of the spring piece (62) is a fixed end fixed on the travel switch (6), and the other end of the spring piece (62) is a free end extending toward the bottom of the resistance arm (43) of the lever (4).

6. The manual electric clutch structure according to claim 4, characterized in that: The travel switch (6) is located outside the rotation area of ​​the resistance arm (43) of the lever (4), and a portion of the spring (62) is located within the rotation area of ​​the resistance arm (43).

7. The manual electric clutch structure according to claim 1, characterized in that: A torsion spring (9) is connected to the power arm (42) of the lever (4).

8. The manual electric clutch structure according to claim 1, characterized in that: A slope (44) is provided on the side of the power arm (42) of the lever (4) facing the insertion direction of the operating handle.

9. The manual electric clutch structure according to claim 8, characterized in that: The side of the inclined surface (44) close to the resistance arm (43) transitions through the arc surface (45).

10. The manual electric clutch structure according to claim 1, characterized in that: A mounting hole (41) is provided in the middle of the lever (4). The lever (4) is rotatably connected to the base (8) at the mounting hole (41) via a fixing pin (7). The fixing pin (7) constitutes a rotation fulcrum of the lever (4).

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