CN110043635A - A kind of clutch gear reduction gearbox - Google Patents

Abstract

The invention discloses a clutch gear reduction box, comprising a box shell, a motor, a first double gear, a transmission mechanism and a clutch gear assembly. The motor is mounted on the box shell, and a connecting shaft is also fixedly installed on the box shell. A first double gear is rotatably installed on the shaft, and the first double gear includes a first gear and a second gear that are integrally formed; the clutch gear assembly includes a pin, a clutch bracket, a compression spring and a clutch gear; the second gear and the clutch gear Meshing is used to drive the clutch gear to rotate around the center line of the nail rod and around the center line of the connecting shaft. The box shell is provided with a limit boss; the box shell is rotatably installed with an output shaft, which is fixed on the output shaft. An output gear that can be engaged with and disengaged from the clutch gear is installed. In the invention, the clutch gear can be meshed with the output gear to transmit the torque normally, and the clutch gear can be separated from the output gear, so that the output shaft can realize manual free forward and reverse rotation, which can meet more application occasions.

Description

A clutch gear reducer

technical field

The invention belongs to the field of reduction boxes, and more particularly, relates to a clutch gear reduction box.

Background technique

With the development and continuous improvement of mechanical technology and automation technology, mechanization and automation are becoming more and more common, which also has an impact on our social life. In today's society, with the development and progress of mechanization technology and automation technology, every enterprise in social life has undergone unprecedented changes. At present, the application of clutch gear reducer in the reduction mechanism is more and more extensive.

The traditional clutch gear reducer has complex structure and complicated assembly, and after the reducer stops working, the output shaft of the reducer cannot be manually twisted in the opposite direction to the working direction (the same direction can also be manually twisted). When the output shaft of the gearbox can be manually twisted freely in forward and reverse directions, for example, when the smart door lock needs to activate the manual unlocking escape function at any time, it cannot be used, which will affect the normal escape of personnel.

SUMMARY OF THE INVENTION

In view of the above defects or improvement needs of the prior art, the present invention provides a clutch gear reducer, which can not only normally transmit torque by meshing with the output gear through the clutch gear, but also separate from the output gear through the clutch gear, so that the output shaft can be Realize manual free forward and reverse rotation, which can meet more applications.

In order to achieve the above object, according to an aspect of the present invention, a clutch gear reduction box is provided, which is characterized in that it includes a case, a motor, a first double gear, a transmission mechanism and a clutch gear assembly, wherein,

The motor is installed on the casing, and a connecting shaft is also fixedly installed on the casing, and the first double gear is fixedly installed on the connecting shaft, and the first double gear includes a coaxial arrangement and a fixed connection. the first gear and the second gear together, the motor shaft of the motor drives the first gear to rotate through the transmission mechanism;

The clutch gear assembly includes a pin, a clutch bracket, a compression spring and a clutch gear. The pin includes a nail head and a nail rod that are fixedly connected together. One end of the clutch bracket is rotatably mounted on the connecting shaft while the other end is rotatably mounted on the connecting shaft. It is fixedly mounted on the nail rod, the compression spring is mounted on the nail rod, the clutch gear is rotatably mounted on the nail rod, and the compression spring and the clutch gear are located on the nail rod. between the nail head and the clutch bracket, the compression spring presses the clutch gear on the clutch bracket through elastic force;

The second gear meshes with the clutch gear to drive the clutch gear to rotate around the centerline of the nail rod and around the centerline of the connecting shaft, and a limiting boss is provided on the casing for Limiting the rotation stroke of the clutch gear around the center line of the connecting shaft, the limiting boss includes a first limiting surface for limiting the rotation stroke of the clutch gear along the first direction and a rotation stroke for limiting the clutch gear along the second direction The second limit surface of , the second direction is opposite to the first direction;

The casing is rotatably mounted with an output shaft, and the output shaft is fixedly mounted with an output gear that can be engaged with and separated from the clutch gear, and when the clutch gear rotates to contact with the first limit surface and rotates to the second limit surface. When the limit surface is in contact, it can be engaged with the clutch gear.

Preferably, the transmission assembly includes a worm, a worm wheel, a transmission gear and a second double gear, the worm is mounted on a motor shaft of the motor, the worm gear is engaged with the worm, and the transmission gear is connected with the The worm gear is coaxially arranged and the two are integrally formed, the second double gear includes a third gear and a fourth gear that are arranged coaxially and fixedly connected together, the third gear is meshed with the transmission gear, and the fourth gear is The first gear is meshed.

Preferably, a washer is provided between the compression spring and the clutch gear.

Preferably, the gasket is a graphite gasket.

Preferably, the box shell includes a box body and a box cover that are detachably connected together.

Preferably, the first double gear, the transmission mechanism and the clutch gear assembly are all located in the casing, the motor casing of the motor is exposed to the casing, and the motor shaft of the motor extends into the casing It is connected with the transmission mechanism inside.

Preferably, a drive gear is also installed on the output shaft, the drive gear is exposed outside the casing, and the output gear is located in the casing.

Preferably, the rotational stroke of the clutch gear from the first limiting surface to the second limiting surface is 261°.

In general, compared with the prior art, the above technical solutions conceived by the present invention can achieve the following beneficial effects:

The clutch gear assembly of the present invention relies on the rotation of the first double gear to drive the clutch gear to rotate. At the same time, since the compression spring has elastic force on the clutch gear, the clutch gear can rotate around the center line of the connecting shaft, thus forming a planetary The gear train realizes the separation and meshing of the clutch gear and the output gear through the rotation of the clutch gear. When meshing with the output gear, it can transmit the torque outward through the output gear. When it is separated from the output gear, it can realize the positive and The reverse bidirectional free manual twisting enables the external parts connected on the output shaft to be manually moved to the designated position, so as to meet the required functions, so that the clutch gear reducer can be adapted to more applications.

Description of drawings

Fig. 1, Fig. 2 are structural representations of the present invention under different viewing angles;

Fig. 3 is the exploded schematic diagram of the present invention;

Fig. 4 is the schematic diagram of the box in the present invention;

Figure 5a is a schematic diagram of the present invention when the clutch gear is in contact with the first limiting surface;

Figure 5b is a schematic diagram of the present invention when the clutch gear is in contact with the second limiting surface;

Figure 5c is a schematic diagram of the present invention when the clutch gear is rotated to be separated from the output gear;

Figure 6a is a schematic structural diagram of a clutch gear assembly in the present invention;

Figure 6b is an exploded schematic view of the clutch gear assembly of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Referring to the accompanying drawings, a clutch gear reduction box includes a case 16, a motor 1, a first double gear 5, a transmission mechanism and a clutch gear assembly 7, wherein,

The motor 1 is installed on the casing 16, and a connecting shaft 8 is also fixedly installed on the casing 16. The first double gear 5 is rotatably mounted on the connecting shaft 8. The first double gear 5. It includes a first gear and a second gear that are coaxially arranged and fixedly connected together, and the motor shaft of the motor 1 drives the first gear to rotate through the transmission mechanism;

The clutch gear assembly includes a pin 71, a clutch bracket 75, a compression spring 72 and a clutch gear 74. The pin 71 includes a nail head and a nail rod that are fixedly connected together. One end of the clutch bracket 75 is rotatably installed on the The connecting shaft 8 and the other end are fixedly mounted on the nail rod, the compression spring 72 is mounted on the nail rod, the clutch gear 74 is rotatably mounted on the nail rod, and the compression spring 72 is mounted on the nail rod. The spring 72 and the clutch gear 74 are located between the nail head and the clutch bracket 75, and the compression spring 72 presses the clutch gear 74 on the clutch bracket 75 through elastic force; A gasket 73 is arranged between the clutch gears 74, and the gasket 73 is a graphite gasket, which can effectively protect the clutch gear 74, and the friction force of the gasket 73 on the clutch gear 74 is not too large, and it can also lubricate It can not only ensure the rotation of the clutch gear 74, but also ensure that the clutch gear 74 rotates around the center line of the connecting shaft 8 after pressing the clutch gear 74 to form a structure similar to a planetary gear train; the length of the clutch bracket 75 One end of the direction is provided with a nail rod installation hole, the nail rod is fixedly installed at the nail rod installation hole, the other end of the length direction of the clutch bracket 75 is provided with a shaft hole, and the clutch bracket 75 can be rotatably installed on the connecting shaft 8 through the shaft hole, During assembly, the compression spring 72, the washer 73, and the clutch gear 74 are successively inserted into the pin 71 and then assembled in the pin rod mounting hole of the clutch bracket 75, and then the shaft hole of the clutch bracket 75 is rotatably installed on the shaft hole. on the connecting shaft 8. In addition, the displacement of the clutch bracket 75 along the axial direction of the connecting shaft 8 is restricted by the limiting structure to prevent the clutch gear 74 from falling off the first double gear 5 due to axial movement. A bearing member can be provided at the shaft hole of the bracket 75, and the bearing member can be installed on the connecting shaft 8. The limiting structure can also be provided with a shoulder on the connecting shaft 8 to limit the axial displacement of the clutch bracket 75 along the connecting shaft 8, or limit the axial displacement of the clutch bracket 75. The position structure can be the inner wall of the case 16 , and the axial displacement of the clutch bracket 75 along the connecting shaft 8 is restricted by the inner wall of the case 16 .

The second gear meshes with the clutch gear 74 to drive the clutch gear 74 to rotate around the centerline of the nail rod and around the centerline of the connecting shaft 8, so that the rotation and revolution of the clutch gear 74 can be realized, The casing 16 is provided with a limiting boss 18 . The limiting boss 18 is preferably arranged on the inner wall of the casing 16 to limit the rotation of the clutch gear 74 around the center line of the connecting shaft 8 . The table 18 includes a first limiting surface 19 for limiting the rotational travel of the clutch gear 74 in the first direction and a second limiting surface 20 for limiting the rotational travel of the clutch gear 74 in the second direction, which is the same as the second direction. The first direction is opposite;

An output shaft 17 is rotatably mounted on the casing 16, and both ends of the output shaft 17 can be rotatably mounted on the casing 16 through the first bearing 3 and the second bearing 9. The output shaft 17 is fixedly mounted on the casing 17. The clutch gear 74 engages and disengages the output gear 6 , and can engage with the clutch gear 74 when it rotates to contact the first limit surface 19 and when it rotates to contact the second limit surface 20 .

5a and 5b, since the compression spring 72 has a certain pressure on the clutch gear 74 and the clutch bracket 75, there is a certain frictional resistance when the clutch gear 74 rotates. When the motor 1 drives the first double gear through the transmission mechanism When the first and second gears of The line rotates, when the clutch gear 74 rotates around the center line of the connecting shaft 8 to contact the first limit surface 19, the clutch gear assembly 7 stops rotating around the center line of the connecting shaft 8, but at this time the clutch gear 74 is still in the second position. Under the drive of the gear, it rotates, and the clutch gear 74 meshes with the output gear 6 to transmit torque. On the contrary, when the motor shaft of the motor 1 rotates in the reverse direction, when the clutch gear assembly 7 rotates in the second direction opposite to the first direction to When in contact with the second limiting surface 20 , the clutch gear 74 meshes with the output gear 6 to transmit torque in reverse.

Further, the transmission assembly includes a worm 14, a worm wheel 15, a transmission gear and a second double gear 4, the worm 14 is installed on the motor shaft of the motor 1, and the worm wheel 15 meshes with the worm 14, so The transmission gear and the worm gear 15 are coaxially arranged and fixedly connected together. The second double gear 4 includes a third gear and a fourth gear that are coaxially arranged and fixedly connected together. The transmission gear is meshed, and the fourth gear is meshed with the first gear. The cooperation of the worm gear 15 and the worm 14 can make the transmission relatively stable and the noise is low, and the worm gear 15 and the transmission gear are integrally formed together to form a part similar to a double gear, which is connected with the first double gear 5 and the second double gear. The cooperating of the gears 4 can effectively reduce the installation space of the gear parts, so that the volume of the transmission mechanism can also be reduced, so that the volume of the entire reduction box can be made smaller and the assembly is convenient.

Further, the box shell 16 includes the box body 10 and the box cover 2 that are detachably connected together, preferably connected by bolts 11, so that the first double gear 5 and the transmission mechanism can be easily put into the box body 10 and the box cover 2. The case body 10 and the case cover 2 are assembled together after the parts such as the clutch gear assembly and the like. The box body 10 and the box cover 2 are both of open cuboid structure. After the two are assembled together, the box shell 16 is roughly in the shape of a cuboid.

Further, the first double gear 5 , the transmission mechanism and the clutch gear assembly are all located in the casing 16 , the motor casing of the motor 1 is exposed to the casing 16 , and the motor shaft of the motor 1 extends into the casing 16 . The casing 16 is connected with the transmission mechanism, which helps to protect the parts in the casing 16 and prolong the service life of these parts.

Further, a drive gear 12 is mounted on the output shaft 17 , the drive gear 12 is exposed outside the casing 16 , the output gear 6 is located in the casing 16 , and the drive gear 12 can drive the external structure to work.

Further, the rotation stroke of the clutch gear 74 from the first limit surface 19 to the second limit surface 20 is 261°, which makes the clutch gear 74 have a larger rotation stroke and leaves enough space for the clutch The gear 74 is in a separated state from the output gear 6, so that the output shaft 17 can be rotated freely manually.

Referring to Figure 5c, when the clutch gear assembly 7 rotates to the position shown in the figure, the clutch gear 74 and the output gear 6 are in a disengaged state without meshing, and the reduction box cannot transmit torque through the output gear 6 and the output shaft 17 at this time. The output gear 6 can be freely rotated, and the output shaft 17 on the output gear 6 can be manually twisted in both forward and reverse directions. The crux of the torsion problem lies in the fact that after each transmission of torque by the reducer is completed, the clutch gear assembly 7 needs to be reversely rotated by a certain angle (at this time, it is necessary to control the motor 1 and the output torque direction to energize the set time in the reverse direction, so that the motor shaft is reversed. Rotation), the clutch gear 74 is rotated around the center line of the connecting shaft 8 to between the first limit surface 19 and the second limit surface 20, so that the clutch gear 74 is separated from the output gear 6, which can ensure that the output gear 6 The output shaft 17 on the upper can be manually twisted in both forward and reverse directions at will, and in the field of intelligent door locks, the manual unlocking and escape function can be activated at any time in the room.

Those skilled in the art can easily understand that the above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, etc., All should be included within the protection scope of the present invention.

Claims (8)

1. a kind of clutch gear reduction gearbox, which is characterized in that including box shell, motor, the first duplicate gear, transmission mechanism and clutch Gear assembly, wherein

The motor is installed in the box shell, and is also fixedly installed with connecting shaft in the box shell, fixed peace in the connecting shaft First duplicate gear is filled, which includes coaxial arrangement and the first gear being fixed together and second The motor shaft of gear, the motor drives the first gear to rotate by the transmission mechanism；

The clutch gear component includes pin, clutch bracket, compressed spring and clutch gear, and the pin includes being fixedly connected Ailhead and nail rod together, one end of the clutch bracket may be rotatably mounted in the connecting shaft and other end fixation installs In the nail rod, the compressed spring is installed in the nail rod, and the clutch gear is rotatably installed in the nail rod, Between the ailhead and clutch bracket, which passes through elastic force for clutch for the compressed spring and the clutch gear Gear is pressed on the clutch bracket；

The second gear is engaged with the clutch gear, with for drive the clutch gear around nail rod center line rotation and Center line around connecting shaft rotates, and positive stop lug boss is provided in the box shell, for limiting clutch gear in connecting shaft The stroke of heart line rotation, which includes for limiting clutch gear along the first confined planes of the rotational travel of first direction With the second confined planes for limiting the rotational travel of clutch gear in a second direction, the second direction is opposite with first direction；

Rotatably mounted in the box shell to have output shaft, being fixedly installed on the output shaft can engage and separate with clutch gear Output gear, and when clutch gear is turned to the first limit face contact and turn to and the second limit face contact Shi Junke It is engaged with the clutch gear.

2. a kind of clutch gear reduction gearbox according to claim 1, which is characterized in that the transmission component include worm screw, Worm gear, transmission gear and the second duplicate gear, the worm screw are mounted on the motor shaft of the motor, the worm gear and the snail Bar engagement, the transmission gear and the worm gear are coaxially disposed and the two is integrally formed, and second duplicate gear includes same The third gear and the 4th gear that axis is arranged and is fixed together, the third gear are engaged with the transmission gear, and the 4th Gear is engaged with the first gear.

3. a kind of clutch gear reduction gearbox according to claim 1, which is characterized in that the compressed spring and the clutch Gasket is provided between gear.

4. a kind of clutch gear reduction gearbox according to claim 1, which is characterized in that the gasket is Graphite pad.

5. a kind of clutch gear reduction gearbox according to claim 1, which is characterized in that the box shell includes being detachably connected Cabinet and case lid together.

6. a kind of clutch gear reduction gearbox according to claim 1, which is characterized in that first duplicate gear, transmission Mechanism and clutch gear component are respectively positioned in the box shell, and the motor casing of the motor exposes to the box shell, the electricity of the motor Arbor is protruded into the box shell and is connect with transmission mechanism.

7. a kind of clutch gear reduction gearbox according to claim 1, which is characterized in that be also equipped with driving on the output shaft Gear, the driving gear expose to the box shell, and the output gear is located in the box shell.

8. a kind of clutch gear reduction gearbox according to claim 1, which is characterized in that the clutch gear is limited from first The rotational travel that face turns to the second confined planes is 261 °.