Clutch mechanism of engine

Abstract

The utility model provides a clutch mechanism of an engine, and belongs to the technical field of engines. The clutch mechanism solves the problem that an existing clutch mechanism is poor in stability. According to the clutch mechanism of the engine, the engine comprises a box body and a box cover fixedly connected to the box body, the clutch mechanism comprises a pull rod which drives a clutch to be clutched through axial stretching and retracting, a retaining seat is arranged on the inner side wall of the box cover, and a first mounting hole and a second mounting hole which are perpendicular to each other and communicated with each other are formed in the retaining seat. The end of the pull rod is inserted into the first mounting hole and axially slides along the hole wall of the first mounting hole, the clutch mechanism further comprises a rotating rod and a driving piece driving the rotating rod to rotate, a guide seat allowing one end of the rotating rod to penetrate out is arranged on the box cover, and the other end of the rotating rod is rotationally connected into the second mounting hole and is in transmission connection with the end of the pull rod. And when the rotating rod rotates, the pull rod is driven to axially stretch. According to the clutch mechanism of the engine, the rotating precision of the rotating rod during rotation is improved, and the stability of the clutch mechanism is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of engines and relates to a clutch mechanism of an engine. Background Art

[0002] There are usually two types of clutches on motorcycles. One is a manual clutch. The manual clutch is achieved by pulling the clutch cable through the clutch operating handle located on the handlebar, thereby pulling the engine clutch rocker arm. The clutch rocker arm drives the clutch push rod, which can push open the dynamic friction plate and the feed friction plate that are in a coupled state due to spring pressure, completing the separation effect. Conversely, the clutch engagement action is completed by releasing the clutch operating handle, cable and rocker arm.

[0003] The other is an automatic clutch. For example, Chinese patent application [application publication number: CN116221294A] discloses an electronic clutch control mechanism for a motorcycle engine. The engine includes a housing and a housing cover fixedly connected to the housing. A clutch is provided in the housing. The clutch includes an axially extending pull rod. The bottom of the housing has an oil collecting chamber. The bottom of the housing has an oil collecting chamber. The housing cover has an outwardly protruding mounting portion. The mounting portion has an accommodating chamber. The accommodating chamber is connected to the oil collecting chamber. The control mechanism includes a driver fixedly connected to the outside of the housing cover, a drive shaft and a rotating rod both axially positioned and circumferentially rotatable and extending through the accommodating chamber. The rotating rod is connected to the pull rod. The driver drives the rotating rod to rotate via the drive shaft. When the rotating rod rotates forward, the pull rod is pulled out along the axial direction of the clutch. When the rotating rod is reversed, the pull rod is axially retracted under the action of the clutch's own composite spring.

[0004] The above structure is achieved by providing a mounting portion on the box cover, with an accommodating cavity in the mounting portion, and realizing axial positioning of the rotating rod by axially positioning the rotating rod and circumferentially rotatable through the accommodating cavity. However, one end of the rotating rod is connected to the pull rod, and the other end can be connected to the drive shaft and drive the drive shaft to move. Since the rotating rod plays an intermediate transmission role, it can be seen from the figure that one end of the rotating rod is axially positioned by the block in the accommodating cavity, and the other end is connected to the gear transmission structure. Therefore, the rotating rod is positioned by the box cover at one end and limited by the gear transmission at the other end. During the gear transmission process, it is necessary to drive the other end of the rotating rod to rotate, which causes the rotating rod to be easily offset during transmission, affecting the positioning effect of the rotating rod and reducing the stability of the clutch, thereby making it easy to produce displacement deviation when the rotating rod is used, affecting the transmission accuracy of the rotating rod. Utility Model Content

[0005] The purpose of the present invention is to solve the above problems in the existing technology and propose an engine clutch mechanism. The technical problem to be solved by the present invention is: how to solve the problem of poor stability of the existing clutch mechanism.

[0006] The purpose of this utility model can be achieved through the following technical solutions:

[0007] A clutch mechanism of an engine, the engine includes a housing and a housing cover fixedly connected to the housing, the clutch mechanism includes a pull rod that drives the clutch to engage and disengage through axial expansion and contraction, and is characterized in that a retaining seat is provided on the inner side wall of the housing cover, and a mounting hole 1 and a mounting hole 2 that are perpendicular to and connected to each other are provided on the retaining seat, the end of the pull rod is inserted into the mounting hole 1 and slides axially along the hole wall of the mounting hole 1, the clutch mechanism also includes a rotating rod and a driving member that drives the rotating rod to rotate, the housing cover has a guide seat for one end of the rotating rod to pass through, the other end of the rotating rod is rotatably connected to the mounting hole 2 and is transmission-connected to the end of the pull rod, and when the rotating rod rotates, it drives the pull rod to extend and contract axially.

[0008] Working principle: a retaining seat is provided on the box cover, and a mounting hole 1 and a mounting hole 2 are provided on the retaining seat, and the mounting hole 1 is connected to the mounting hole 2, the end of the pull rod is inserted into the mounting hole 1, and the other end of the rotating rod is rotatably connected to the mounting hole 2, and the rotating rod is driven to rotate by the driving member, and the other end of the rotating rod drives the pull rod axially to extend and retract, thereby realizing the clutch engagement, and the mounting hole 1 is provided in the retaining seat to limit the pull rod circumferentially, so that the pull rod can stably extend and retract along the axial direction without circumferential deviation. By respectively providing the mounting hole 1 and the mounting hole 2, and the two are arranged perpendicular to each other, the guide limits of the pull rod and the rotating rod do not interfere with each other, and a guide seat is provided above the retaining seat, and the retaining seat and the guide seat realize circumferential limitation of the two ends of the rotating rod, so that the rotating rod will not have a large circumferential displacement deviation of itself when rotating, making the rotation of the rotating rod more stable, thereby improving the rotation accuracy of the rotating rod during rotation, and further improving the stability of the clutch mechanism.

[0009] In the clutch mechanism of the above-mentioned engine, the mounting hole 1 is opened along the axial direction of the pull rod, and the opening of the mounting hole 1 is opened toward the box body, the mounting hole 2 is opened upward, the lower end of the rotating rod is inserted into the mounting hole 2, and the upper end of the rotating rod passes through the guide seat.

[0010] By staggering the opening directions of mounting hole one and mounting hole two, the installation of the rotating rod and the pull rod is more convenient and does not interfere with each other, and the upper end of the rotating rod is passed through the guide seat, so that the rotating rod can be axially positioned on mounting hole two and the guide seat by its own gravity, thereby improving the stability of the rotating rod setting and further improving the stability of the clutch mechanism.

[0011] In the clutch mechanism of the engine described above, a notch is provided on the retaining seat to connect the first mounting hole and the second mounting hole, and the notch is provided in the middle of the adjacent hole walls of the first mounting hole and the second mounting hole.

[0012] By setting the notch, the cooperation between the pull rod and the rotating rod in the retaining seat is more stable, and the notch is set in the middle position of mounting hole one and mounting hole two, which improves the overall strength of the retaining seat, and also enables the retaining seat to stably guide the pull rod and the rotating rod, further improving the stability of the cooperation between the rotating rod and the pull rod, and improving the transmission accuracy of the clutch mechanism.

[0013] In the clutch mechanism of the above-mentioned engine, the second mounting hole has a circular step surface, the outer wall of the lower end of the rotating rod is raised to form a meshing tooth 1 arranged along the circumferential direction, and one end of the pull rod has a meshing tooth 2 arranged along the axial direction. The rotating rod rotates to cause the meshing tooth 1 to drive the meshing tooth 2 to move, and the meshing tooth 1 presses downward against the step surface.

[0014] The rotating rod relies on its own gravity to press the meshing tooth 1 downward against the step surface. When the rotating rod rotates, the meshing tooth 2 rotates synchronously and drives the meshing tooth 1 to move. The lower end surface of the meshing tooth 1 is pressed against the step surface to achieve the self-axial positioning of the lower end of the rotating rod, thereby improving the meshing accuracy of the rotating rod and the pull rod, thereby improving the stability and transmission accuracy of the clutch mechanism. There is no need to set up other components. The self-axial positioning can be completed only through the meshing components with the pull rod, which improves the convenience of installation of the rotating rod.

[0015] In the clutch mechanism of the above-mentioned engine, the retaining seat is arranged at the center position of the box cover, and the guide seat is provided with a mounting hole three. The rotating rod passes through the mounting hole three and rotates with the hole wall of the mounting hole three. The axis center lines of the mounting hole three and the mounting hole two coincide with each other.

[0016] By keeping the seat in the center of the box cover, on the one hand, it is convenient to install and position the pull rod, and on the other hand, the setting length of the rotating rod is minimized. The shorter the length of the rotating rod, the more stable the positioning of the holding seat and the guide seat, thereby improving the stability and transmission accuracy of the clutch mechanism transmission. The setting of the mounting hole three facilitates the insertion and rotation limit of the rotating rod, making the installation of the rotating rod more convenient and improving the rotation accuracy of the rotating rod.

[0017] In the clutch mechanism of the above-mentioned engine, the driving member includes a transmission box and a driving motor both of which are fixedly connected to the top of the box body. The motor shaft of the driving motor is connected to a gear transmission assembly located in the transmission box. The gear transmission assembly includes a connecting shaft coaxially arranged with the rotating rod. The lower end of the connecting shaft and the upper end of the rotating rod are both provided with external splines. The driving member also includes a spline sleeve with internal splines. The connecting shaft and the rotating rod are connected through the spline sleeve. The lower end face of the connecting shaft and the upper end face of the rotating rod have an adjustable spacing.

[0018] Since the transmission box and drive motor of the driving member are fixed on the top of the box body, the installation base of the transmission box and the drive motor is the top of the box body, and the rotating rod is installed with the retaining seat and guide seat in the box cover as the installation base. Therefore, in order to improve the connection convenience between the connecting shaft and the rotating rod, the connecting shaft and the rotating rod are vertically connected through a spline sleeve, reducing the requirements for the installation accuracy of the driving member. At this time, the position of the connecting shaft can be adjusted by inserting the connecting shaft into the spline sleeve, and there is no need to move the rotating rod, which makes the setting of the rotating rod more stable and facilitates the installation of the rotating rod and the driving member.

[0019] The box body and the box cover can be of split design or of integrated design.

[0020] The setting of the adjustable spacing, on the one hand, facilitates the adjustment of the position of the connecting shaft, and on the other hand, enables the connecting shaft to transmit the rotation rod only through the spline sleeve, thereby avoiding the friction between the connecting shaft and the end of the rotating rod and improving the transmission accuracy of the connecting shaft and the rotating rod.

[0021] In the clutch mechanism of the above-mentioned engine, the gear transmission assembly also includes a transmission gear sleeve and a worm axially connected to the transmission gear sleeve, the motor shaft has a driving gear meshing with the transmission gear sleeve, and the upper end of the connecting shaft has a fan gear meshing with the worm.

[0022] By setting the transmission gear sleeve, the installation position of the drive motor can be set according to the actual settings of other components on the engine. It is only necessary to connect the transmission gear sleeve of appropriate size to realize the transmission mechanism of the driving gear and the worm, so that the settings of other components on the box do not need to be adjusted, which is convenient for the installation of the driving component. In addition, through the cooperation of the fan gear and the worm, on the one hand, the transmission accuracy is guaranteed, and on the other hand, the fan gear can also achieve a larger lateral position adjustment without changing the transmission speed, making the position setting of the connecting shaft and the transmission connection between the worm more convenient, improving the convenience of the coaxial setting of the connecting shaft and the rotating rod, and adopting the above-mentioned setting, the installation space required for the driving component is smaller.

[0023] In the clutch mechanism of the above-mentioned engine, the side wall of the mounting hole three is recessed to form a positioning cavity, the outer wall of the rotating rod has a limiting step, and the inner wall of the positioning cavity is connected to a retaining spring, which presses downward on the limiting step.

[0024] By providing a limiting step on the outer side wall of the rotating rod, the outer side wall of the retaining spring is clamped with the inner side wall of the positioning cavity, and the retaining spring is pressed downward against the limiting step, thereby achieving axial positioning of the upper end of the rotating rod, so that the rotating rod is axially positioned at the upper and lower ends, thereby improving the rotation stability of the rotating rod, thereby improving the transmission accuracy of the rotating rod, and the provision of the retaining spring also makes the installation of the rotating rod more convenient.

[0025] In the clutch mechanism of the engine described above, an oil seal located above the retaining spring is sleeved on the rotating rod. The oil seal includes an annular outer ring and an inner ring abutting against the rotating rod. The lower end of the outer ring abuts against the upper end of the retaining spring.

[0026] Since there is lubricating oil in both the box body and the box cover, and the upper end of the rotating rod needs to extend out of the guide seat and connect with the connecting shaft, it is necessary to ensure that the lubricating oil in the box cover will not flow out from between the rotating rod and the mounting hole three. An oil seal is provided on the upper end of the rotating rod to prevent the outflow of oil. The oil seal only has an inner ring that abuts against the rotating rod, and an outer ring directly abuts against the retaining spring, which reduces the friction between the oil seal and the retaining spring when rotating, improves the rotation accuracy of the rotating rod, and thereby improves the transmission accuracy of the clutch mechanism.

[0027] In the clutch mechanism of the above-mentioned engine, the transmission case also includes a mounting sleeve for the connecting shaft to pass through, the side wall of the mounting hole three is recessed to form a mounting cavity, the lower end of the mounting sleeve can be passed through the mounting cavity, and the end of the mounting sleeve is abutted against the bottom of the mounting cavity, and the mounting cavity is located above the positioning cavity.

[0028] The setting of the mounting sleeve, on the one hand, prevents dust from entering the transmission box and affecting the transmission accuracy, and on the other hand, realizes the rapid positioning of the connecting shaft, so that the connecting shaft can be quickly coaxially set with the rotating rod through the setting of the mounting sleeve, thereby improving the transmission accuracy of the connecting shaft and the rotating rod.

[0029] In the clutch mechanism of the above-mentioned engine, the installation cavity and the positioning cavity are both cylindrical, the inner diameter of the installation cavity is larger than the inner diameter of the positioning cavity, a sealing ring is sleeved on the outer wall of the installation sleeve, and the outer wall of the sealing ring abuts against the side wall of the installation cavity.

[0030] The setting of the sealing ring can achieve secondary sealing to prevent oil outflow. The size setting of the installation cavity and the positioning cavity can further improve the sealing effect, making it more difficult for the oil to flow out. In order to ensure the transmission ratio, the installation cavity needs to be set larger at this time, so that the connecting shaft and the rotating rod are transmitted in a one-to-one ratio, ensuring that the setting of the clutch mechanism is more stable.

[0031] In the clutch mechanism of the engine, the upper end of the connecting shaft is arranged on the upper end of the mounting sleeve through a bearing, the spline sleeve is arranged in the mounting sleeve, and the inner side wall of the spline sleeve is spaced from the outer side wall of the mounting sleeve.

[0032] The setting of the bearing makes the rotation of the connecting shaft smoother, and the setting of the interval enables the spline sleeve to rotate stably in the mounting sleeve, thereby ensuring the stability of the clutch mechanism transmission.

[0033] Compared with the prior art, the clutch mechanism of this engine has the following advantages:

[0034] 1. By setting the guide seat and the retaining seat, the upper and lower ends of the rotating rod are positioned, which improves the setting accuracy of the rotating rod. In addition, by setting the retaining seat at the center of the box cover and the guide seat at the outer edge, the length of the rotating rod is minimized, which facilitates the improvement of the transmission accuracy after the rotating rod is set.

[0035] 2. By transmitting the clutch between the connecting shaft and the rotating rod through the spline sleeve, even when the installation base of the driving member is different from that of the rotating rod, the spline sleeve can be used to achieve quick installation and transmission, further improving the transmission accuracy of the clutch mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic structural diagram of the utility model after assembly.

[0037] Figure 2 It is a structural schematic diagram of the utility model without the box cover installed.

[0038] Figure 3 It is a partial cross-sectional view of the utility model after assembly.

[0039] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0040] Figure 5 yes Figure 3 A partial enlarged view of point B in the middle.

[0041] Figure 6 It is a partial structural diagram of the utility model.

[0042] In the figure, 1, box body; 12, pull rod; 12a, meshing tooth 2; 2, box cover; 21, retaining seat; 21a, mounting hole 1; 21b, mounting hole 2; 21b1, step surface; 21c, communication port; 22, guide seat; 22a, mounting hole 3; 22a1, positioning cavity; 22a2, mounting cavity; 3, driving member; 31, transmission box; 31a, mounting sleeve; 31a1, sealing ring; 32, driving motor; 32 b. Driving gear; 33. Gear transmission assembly; 33a. Connecting shaft; 33a1. Fan gear; 33b. Transmission gear sleeve; 33c. Worm; 34. Spline sleeve; 34a. Internal spline; 4. Rotating rod; 41. Engaging tooth 1; 43. Circlip; 44. Oil seal; 44a. Inner ring; 44b. Outer ring; 45. Clearance; 46. Limiting step; 5. Adjusting spacing; 6. Bearing; 7. Spacer; 8. External spline. DETAILED DESCRIPTION

[0043] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0044] like Figure 1 and Figure 2 As shown, the clutch mechanism of the engine comprises a housing 1 and a housing cover 2 fixedly connected to the housing 1. The clutch mechanism comprises a pull rod 12 which drives the clutch to engage or disengage by axial extension or contraction.

[0045] Specifically, if Figure 1-6 As shown, a retaining seat 21 is provided on the inner side wall of the box cover 2, and a mounting hole 1 21a and a mounting hole 21b are provided on the retaining seat 21, which are perpendicular to each other. The end of the pull rod 12 is inserted into the mounting hole 1 21a and slides axially along the hole wall of the mounting hole 1 21a. The clutch mechanism also includes a rotating rod 4 and a driving member 3 that can drive the rotating rod 4 to rotate. The outer edge of the box cover 2 has a guide seat 22 located above the retaining seat 21, and the mounting hole 1 21a is opened along the axial direction of the pull rod 12, and the opening of the mounting hole 1 21a is opened toward the box body 1, and the opening of the mounting hole 21b is opened upward, and the lower end of the rotating rod 4 is rotatably connected to the mounting hole 21b and The guide seat 21 is connected to the end of the pull rod 12 and drives the pull rod 12 to axially extend and retract when the rotating rod 4 rotates. The upper end of the rotating rod 4 passes through the guide seat 22. The retaining seat 21 is provided with a notch 21c connecting the mounting hole 1 21a and the mounting hole 2 21b. The notch 21c is located in the middle of the adjacent hole walls of the mounting holes 1 21a and 21b. The retaining seat 21 is located at the center of the box cover 2. The outer edge of the box cover 2 has a guide seat 22, and the guide seat 22 is provided with a mounting hole 3 22a. The rotating rod 4 passes through the mounting hole 3 22a and rotates with the hole wall of the mounting hole 3 22a. The axis of the mounting hole 3 22a and the mounting hole 2 21b coincide. In this embodiment, the mounting hole 21b is opened vertically, and the mounting hole 1 21a is opened horizontally.

[0046] Furthermore, if Figure 3-5As shown, the second mounting hole 21b has a circular step surface 21b1, the outer wall of the lower end of the rotating rod 4 is raised to form a meshing tooth 1 41 arranged in the circumferential direction, and one end of the pull rod 12 has a meshing tooth 2 12a arranged in the axial direction. The rotating rod 4 rotates to make the meshing tooth 1 41 drive the meshing tooth 2 12a to move, and the meshing tooth 1 41 is pressed downward against the step surface 21b1. The side wall of the mounting hole 3 22a is recessed to form a positioning cavity 22a1, and the outer wall of the rotating rod 4 has a limiting step 46. A retaining spring 43 is connected to the inner sidewall of the positioning cavity 22a1, pressing downward against the stop step 46. An oil seal 44 is sleeved on the rotating rod 4, located above the retaining spring 43. A clearance 45 is defined between the inner sidewall of the retaining spring 43 and the outer sidewall of the rotating rod 4. The oil seal 44 includes an annular outer ring 44b and an inner ring 44a that abuts the rotating rod 4. The lower end of the outer ring 44b abuts the upper end of the retaining spring 43, which in turn abuts the bottom of the positioning cavity 22a1. The provision of the clearance 5 prevents the retaining spring 43 from contacting the rotating rod 4, reducing resistance to rotation and improving transmission efficiency.

[0047] like Figure 3 and Figure 6 As shown, the driving member 3 includes a transmission box 31 and a driving motor 32, both of which are fixedly connected to the top of the box cover 2. The motor shaft of the driving motor 32 is connected to a gear transmission assembly 33 located in the transmission box 31. The gear transmission assembly 33 includes a transmission gear sleeve 33b, a worm 33c connected to the transmission gear sleeve 33b, and a connecting shaft 33a coaxially arranged with the rotating rod 4. The motor shaft is provided with a driving gear 32b meshing with the transmission gear sleeve 33b, and the upper end of the connecting shaft 33a is provided with a fan gear 33a1 meshing with the worm 33c. The lower end of the connecting shaft 33a and the upper end of the rotating rod 4 are both provided with external splines 8. The driving member 3 also includes a spline sleeve 34 with internal splines 34a. The connecting shaft 33a is connected to the rotating rod 4 through the spline sleeve 34, and the lower end surface of the connecting shaft 33a and the upper end surface of the rotating rod 4 have an adjustable spacing 5.

[0048] like Figure 3 and Figure 5As shown, the transmission box 31 includes a mounting sleeve 31a for the connecting shaft 33a to pass through, and the side wall of the mounting hole 32a is recessed to form a mounting cavity 22a2. The lower end of the mounting sleeve 31a can be passed through the mounting cavity 22a2, and the end of the mounting sleeve 31a abuts against the bottom of the mounting cavity 22a2. The mounting cavity 22a2 is located above the positioning cavity 22a1. The mounting cavity 22a2 and the positioning cavity 22a1 are both cylindrical. The inner diameter of the mounting cavity 22a2 is larger than the inner diameter of the positioning cavity 22a1. A sealing ring 31a1 is sleeved on the outer wall of the mounting sleeve 31a, and the outer wall of the sealing ring 31a1 abuts against the side wall of the mounting cavity 22a2. The upper end of the connecting shaft 33a is arranged on the upper end of the mounting sleeve 31a through a bearing 6. The spline sleeve 34 is arranged in the mounting sleeve 31a and the inner wall of the spline sleeve 34 and the outer wall of the mounting sleeve 31a have a gap 7.

[0049] Working principle: By arranging a retaining seat 21 and a guide seat 22 on the box cover 2, the self-axial positioning and self-circumferential limitation of the upper and lower ends of the rotating rod 4 are realized, and the rotating rod 4 is positioned on the box cover 2 through the joint action of the guide seat 22 and the retaining seat 21. At this time, the driving member 3 only needs to drive the rotating rod 4 to rotate. Since the transmission box 31 and the driving motor 32 of the driving member 3 are both fixed to the top of the box cover 2, the installation reference of the transmission box 31 and the driving motor 32 is the top of the box body 1, and the rotating rod 4 is installed with the retaining seat 21 and the guide seat 22 in the box cover 2. In order to improve the connection convenience between the connecting shaft 33a and the rotating rod 4, the connecting shaft 33a and the rotating rod 4 are vertically connected by a spline sleeve 34, which reduces the requirements for the installation accuracy of the driving member 3. At this time, the connecting shaft The position of the connecting shaft 33a can be adjusted by inserting 33a into the position of the spline sleeve 34, and the positioning of the rotating rod 4 is achieved by the guide seat 22 and the retaining seat 21 in the box cover 2 to achieve its own axial positioning and self-circumferential limitation, so that the rotating rod 4 can stably rotate under the action of the driving member 3, and there will be no axial and circumferential displacement, making the rotation of the rotating rod 4 more stable, and improving the rotation accuracy of the rotating rod 4 during rotation. Moreover, since the rotating rod 4 is arranged along the radial direction of the pull rod 12, and the end of the rotating rod 4 is connected to the end of the pull rod 12 in the retaining seat 21, the retaining seat 21 can achieve circumferential limitation of the pull rod 12 while achieving the positioning of the rotating rod 4, so that the transmission accuracy of the pull rod 12 and the rotating rod 4 is higher, thereby achieving the effect of improving the transmission accuracy and further improving the stability of the clutch mechanism.

[0050] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A clutch mechanism of an engine, comprising a housing (1) and a housing cover (2) fixedly connected to the housing (1), the clutch mechanism comprising a pull rod (12) for driving the clutch to engage or disengage by axial extension and contraction, characterized in that: The inner wall of the box cover (2) is provided with a retaining seat (21), and the retaining seat (21) is provided with a mounting hole 1 (21a) and a mounting hole 2 (21b) which are perpendicular to each other and connected. The end of the pull rod (12) is inserted into the mounting hole 1 (21a) and slides axially along the hole wall of the mounting hole 1 (21a). The clutch mechanism also includes a rotating rod (4) and a driving member (3) for driving the rotating rod (4) to rotate. The box cover (2) is provided with a guide seat (22) for one end of the rotating rod (4) to pass through. The other end of the rotating rod (4) is rotatably connected to the mounting hole 2 (21b) and is transmission-connected to the end of the pull rod (12). When the rotating rod (4) rotates, the pull rod (12) is driven to extend and retract axially.

2. The clutch mechanism of the engine according to claim 1, characterized in that: The first mounting hole (21a) is opened along the axial direction of the pull rod (12), and the opening of the first mounting hole (21a) is opened toward the box body (1), and the opening of the second mounting hole (21b) is opened upward. The lower end of the rotating rod (4) is inserted into the second mounting hole (21b), and the upper end of the rotating rod (4) passes through the guide seat (22).

3. The clutch mechanism of the engine according to claim 1 or 2, characterized in that: The retaining seat (21) is provided with a notch (21c) communicating with the first mounting hole (21a) and the second mounting hole (21b), and the notch (21c) is arranged in the middle of the adjacent hole walls of the first mounting hole (21a) and the second mounting hole (21b).

4. The clutch mechanism of the engine according to claim 1 or 2, characterized in that: The second mounting hole (21b) has a stepped surface (21b1), and a protrusion on the outer wall of the lower end of the rotating rod (4) forms a meshing tooth (41) arranged in the circumferential direction. One end of the pull rod (12) has a meshing tooth (12a) arranged in the axial direction. When the rotating rod (4) rotates, the meshing tooth (41) drives the meshing tooth (12a) to move, and the meshing tooth (41) presses downward against the stepped surface (21b1).

5. The clutch mechanism of the engine according to claim 1 or 2, characterized in that: The retaining seat (21) is arranged at the center of the box cover (2); a mounting hole (22a) is provided on the guide seat (22); the rotating rod (4) passes through the mounting hole (22a) and is rotatably engaged with the hole wall of the mounting hole (22a); and the axis of the mounting hole (22a) and the mounting hole (21b) coincide.

6. The clutch mechanism of the engine according to claim 5, characterized in that: The side wall of the mounting hole three (22a) is recessed to form a positioning cavity (22a1), the outer side wall of the rotating rod (4) has a limiting step (46), the inner side wall of the positioning cavity (22a1) is connected to a retaining spring (43), and the retaining spring (43) is pressed downward against the limiting step (46).

7. The clutch mechanism of the engine according to claim 6, characterized in that: The driving member (3) comprises a transmission box (31) and a driving motor (32) both fixedly connected to the top of the box body (1); a motor shaft of the driving motor (32) is connected to a gear transmission assembly (33) located in the transmission box (31); the gear transmission assembly (33) comprises a connecting shaft (33a) coaxially arranged with the rotating rod (4); the lower end of the connecting shaft (33a) and the upper end of the rotating rod (4) are both provided with external splines (8); the driving member (3) further comprises a spline sleeve (34) having internal splines (34a); the connecting shaft (33a) and the rotating rod (4) are connected via the spline sleeve (34); the lower end surface of the connecting shaft (33a) and the upper end surface of the rotating rod (4) have an adjustable spacing (5).

8. The clutch mechanism of the engine according to claim 6, characterized in that: The rotating rod (4) is sleeved with an oil seal (44) located above the retaining spring (43). The oil seal (44) comprises an annular outer ring (44b) and an inner ring (44a) abutting against the rotating rod (4). The lower end of the outer ring (44b) abuts against the upper end of the retaining spring (43).

9. The clutch mechanism of the engine according to claim 7, characterized in that: The transmission box (31) further comprises a mounting sleeve (31a) for the connecting shaft (33a) to pass through, the side wall of the mounting hole (22a) is recessed to form a mounting cavity (22a2), the lower end of the mounting sleeve (31a) can be passed through the mounting cavity (22a2), and the end of the mounting sleeve (31a) abuts against the bottom of the mounting cavity (22a2), and the mounting cavity (22a2) is located above the positioning cavity (22a1).

10. The clutch mechanism of the engine according to claim 9, characterized in that: The installation cavity (22a2) and the positioning cavity (22a1) are both cylindrical, the inner diameter of the installation cavity (22a2) is larger than the inner diameter of the positioning cavity (22a1), a sealing ring (31a1) is sleeved on the outer wall of the installation sleeve (31a), and the outer wall of the sealing ring (31a1) abuts against the side wall of the installation cavity (22a2).

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