A bidirectional clutch device for electric operating mechanism

Abstract

The present invention discloses a bidirectional clutch device for an electric operating mechanism, which includes an output shaft, a clutch shaft, a plurality of needle rollers, and a clutch gear. The clutch gear meshes with the gear of the reduction gear of the electric operating mechanism. The output shaft is a hollow shaft with one end open. The clutch shaft is installed in the output shaft, and a plurality of needle roller assembly holes are opened on the side wall of the same circumference of the output shaft. The needle rollers can be installed in the needle roller assembly holes so as to move outward. The clutch gear is arranged outside the output shaft and has a groove for clamping the needle rollers in its inner hole. The clutch shaft is connected to a clutch drive device. The above-mentioned bidirectional clutch device for an electric operating mechanism can not only realize bidirectional clutching of the electric operating mechanism; but also can be clutched at any time during the operation of the motor. It has an ingenious design, stable and reliable operation, and high safety.

Description

Technical Field

[0001] The present invention relates to an electric operating mechanism, in particular to a bidirectional clutch device used for the electric operating mechanism. Background Art

[0002] In distribution equipment circuit breakers, electric operating mechanisms with bidirectional clutches are often required. These mechanisms typically use a motor to drive a reduction mechanism to output torque or force to control the circuit breaker's closing and opening operations while maintaining power to the control circuit. However, a particular type of electric operating mechanism requires both bidirectional clutching and the ability to engage and disengage the mechanism at any time while the motor is operating. Currently, existing bidirectional clutches cannot meet these requirements. Summary of the Invention

[0003] The object of the present invention is to provide a bidirectional clutch device for an electric operating mechanism to solve the above-mentioned problems existing in the bidirectional clutch for an electric operating mechanism in the prior art.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A two-way clutch device for an electric operating mechanism, comprising an output shaft, a clutch shaft, several needle rollers and a clutch gear, the clutch gear meshing with the reduction gear of the electric operating mechanism, the output shaft adopts a hollow shaft with one end open, the clutch shaft is installed in the output shaft, and several needle roller assembly holes are opened on the side walls of the same circumference of the output shaft, the needle rollers can be installed in the needle roller assembly holes so as to move outward, the clutch gear is arranged outside the output shaft and a groove for clamping the needle roller is provided in its inner hole, the clutch shaft is connected to a clutch driving device, during transmission, the clutch driving device drives the clutch shaft to push the needle roller to move outward and clamp in the groove, and the clutch gear drives the output shaft to rotate through the needle roller, and during separation, the clutch driving device drives the clutch shaft to return, the needle roller disengages from the groove, and the output shaft stops rotating.

[0006] Particularly, the clutch drive device adopts an electromagnet, and a push rod of the electromagnet is connected to the clutch shaft.

[0007] In particular, the clutch drive device adopts an electromagnet, the push rod of the electromagnet is arranged corresponding to one end of the clutch shaft, and a reset spring for resetting the clutch shaft is installed in the output shaft at the other end of the clutch shaft.

[0008] In particular, the clutch shaft includes a first cylindrical section and a second cylindrical section, the radius of the first cylindrical section is smaller than the radius of the second cylindrical section. During transmission, the second cylindrical section is in the position corresponding to the needle roller and pushes the needle roller to move outward and get stuck in the groove. During separation, the first cylindrical section is in the position corresponding to the needle roller and limits the needle roller on the inside.

[0009] In particular, the clutch shaft also includes a third cylindrical segment connected to the second cylindrical segment. The radius of the third cylindrical segment is greater than the radius of the second cylindrical segment, and the radius of the third cylindrical segment is set to match the inner hole radius of the output shaft, which plays a guiding role when the clutch shaft moves in the output shaft.

[0010] The beneficial effects of the present invention are that, compared with the prior art, the bidirectional clutch device for the electric operating mechanism can not only realize bidirectional clutching of the electric operating mechanism, but also can be clutched at any time during the operation of the motor, with ingenious design, stable and reliable operation and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a transmission state diagram of a bidirectional clutch device for an electric operating mechanism provided in a specific embodiment of the present invention;

[0012] Figure 2 1 is a diagram of a disengaged state of a bidirectional clutch device for an electric operating mechanism provided in a specific embodiment of the present invention;

[0013] Figure 3 Schematic diagram of a clutch gear and a needle roller in a transmission state of a bidirectional clutch device for an electric operating mechanism provided by a specific embodiment of the present invention;

[0014] Figure 4 Schematic diagram of a clutch gear and a needle roller in a disengaged state of a bidirectional clutch device for an electric operating mechanism provided by a specific embodiment of the present invention;

[0015] Figure 5 is a cross-sectional view of an output shaft of a bidirectional clutch device for an electric operating mechanism provided in a specific embodiment of the present invention;

[0016] Figure 6 It is a structural schematic diagram of a clutch shaft of a bidirectional clutch device for an electric operating mechanism provided in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0018] See also Figures 1 to 6 As shown in the figure, in this embodiment, a bidirectional clutch device for an electric operating mechanism includes an output shaft 1, a clutch shaft 2, two needle rollers 3, a clutch gear 4 and a return spring 5. The clutch gear 4 is engaged with a reduction gear 6 of the electric operating mechanism, and the reduction gear 6 is driven by a motor 7.

[0019] The output shaft 1 adopts a hollow shaft with one end open. The clutch shaft 2 is installed at the top of the inner hole of the output shaft 1. An electromagnet 8 is installed at one end of the output shaft 1. The push rod 9 of the electromagnet 8 is corresponding to one end of the clutch shaft 2. The electromagnet 8 pushes the clutch shaft 2 to move in the output shaft 1 through the push rod 9. The reset spring 5 is set at the bottom of the inner hole of the output shaft 1 for resetting the clutch shaft 2.

[0020] Two needle roller assembly holes 10 are symmetrically provided on the side wall of the same circumference of the output shaft 1. The needle roller 3 can be installed in the needle roller assembly hole 10 so as to move outward. The clutch gear 4 is arranged outside the output shaft 1 and four grooves 11 for clamping the needle roller 3 are evenly distributed in its inner hole. The clutch shaft 2 includes a first cylindrical section 20, a second cylindrical section 21 and a third cylindrical section 22. The radius of the first cylindrical section 20 is smaller than the radius of the second cylindrical section 21. During transmission, the second cylindrical section 21 is in the position corresponding to the needle roller 3 and pushes the needle roller 3 to move outward and be clamped in the groove 11. During separation, the first cylindrical section 20 is in the position corresponding to the needle roller 3. Due to its smaller radius, it cannot push the needle roller 3 to move outward, but it can limit the needle roller 3 on the inside to prevent the needle roller 3 from falling off from the needle roller assembly hole 10. The radius of the third cylindrical section 22 is greater than that of the second cylindrical section 21 , and the radius of the third cylindrical section 22 is matched with the inner hole radius of the output shaft 1 , and plays a guiding role when the clutch shaft 2 moves in the inner hole of the output shaft 1 .

[0021] During transmission, the motor 7 is energized normally, and the motor 7 drives the reduction gear 6 to rotate, and the reduction gear 6 drives the clutch gear 4 to rotate. At this time, the electromagnet 8 is energized, and the push rod 9 of the electromagnet 8 is pushed out to drive the clutch shaft 2 to move downward. The second cylindrical section 21 of the clutch shaft 2 will push the needle roller 3 to move outward and get stuck in the groove 11. The clutch gear 4 drives the output shaft 1 to rotate through the needle roller 3. When separating, the electromagnet 8 is de-energized, the push rod 9 of the electromagnet 8 retracts, and the reset spring 5 rebounds the clutch shaft 2, so that the first cylindrical section 20 is in the position corresponding to the needle roller 3. At this time, the needle roller 3 is disengaged from the groove 11, and the clutch gear 4 cannot rotate with the output shaft 1 through the needle roller 3.

[0022] The above-mentioned two-way clutch device for the electric operating mechanism is controlled by the electromagnet 8. Regardless of whether the motor 7 is working or not, the clutch can be controlled at any time by simply controlling the opening and closing of the electromagnet 8. This can enable electric two-way clutching and the clutch can be switched at any time while the motor is working.

[0023] The above embodiments merely illustrate the basic principles and features of the present invention. The present invention is not limited to these examples. Various modifications and variations are possible without departing from the spirit and scope of the present invention. Such modifications and variations are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A bidirectional clutch device for an electric operating mechanism, characterized in that: It includes an output shaft, a clutch shaft, several needle rollers and a clutch gear. The clutch gear is meshed with the reduction gear of the electric operating mechanism. The reduction gear is driven by an electric motor. The output shaft adopts a hollow shaft with one end open. The clutch shaft is installed in the output shaft, and a plurality of needle roller assembly holes are opened on the side wall of the same circumference of the output shaft. The needle rollers can be installed in the needle roller assembly holes so as to move outward. The clutch gear is arranged outside the output shaft and a groove for clamping the needle roller is provided in its inner hole. The clutch shaft is connected to a clutch drive device. When the transmission is in progress, The clutch drive device drives the clutch shaft to push the needle roller to move outward and get stuck in the groove. The clutch gear drives the output shaft to rotate through the needle roller. When separated, the clutch drive device drives the clutch shaft to return, the needle roller disengages from the groove, and the output shaft stops rotating. The clutch shaft includes a first cylindrical section and a second cylindrical section. The radius of the first cylindrical section is smaller than the radius of the second cylindrical section. During transmission, the second cylindrical section is in the position corresponding to the needle roller and pushes the needle roller to move outward and get stuck in the groove. When separated, the first cylindrical section is in the position corresponding to the needle roller to limit the needle roller on the inside.

2. The bidirectional clutch device for an electric operating mechanism according to claim 1, characterized in that: The clutch drive device adopts an electromagnet, and the top rod of the electromagnet is connected to the clutch shaft.

3. The bidirectional clutch device for an electric operating mechanism according to claim 1, characterized in that: The clutch drive device adopts an electromagnet, the push rod of the electromagnet is arranged corresponding to one end of the clutch shaft, and a reset spring for resetting the clutch shaft is installed in the output shaft at the other end of the clutch shaft.

4. The bidirectional clutch device for an electric operating mechanism according to claim 1, characterized in that: The clutch shaft further includes a third cylindrical segment connected to the second cylindrical segment. The radius of the third cylindrical segment is greater than the radius of the second cylindrical segment, and the radius of the third cylindrical segment is set to match the inner hole radius of the output shaft.

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