A lever structure with anti-stuck function

Abstract

The invention provides a lever structure with an anti-stuck function, including a lever body, a first anti-wear hemisphere movably mounted on the top of the lever body through an anti-wear component; the anti-wear component includes a first bearing sleeve and a limit component, the first bearing sleeve is fixed on the top of the lever, the limit component is fixed on the first anti-wear hemisphere, the anti-wear component limits the first bearing sleeve in the first anti-wear hemisphere, the anti-wear hemisphere is fixed on the top of the lever body through the first bearing sleeve; the first limit component includes an annular hemisphere retaining ring or three arc-shaped retaining blocks. The lever structure body described in the invention is composed of a lever base, an inner shaft, an outer shaft, a rolling bearing, etc. The lever base is connected to the output shaft of the drive motor, the inner shaft is connected to the lever base by screws, and the inner shaft is connected to the outer shaft by a rolling bearing, so that the sliding friction between the lever and the blade is converted into the rolling friction of the bearing, which greatly reduces the friction force and can effectively prevent the lever from getting stuck when shifting the paddle.

Description

Technical Field

[0001] The invention belongs to the technical field of intelligent parking cabins, and in particular relates to a lever structure with an anti-stuck function. Background Art

[0002] With the development of drone technology, drones are increasingly being used in the industrial sector. Unmanned operation, as a management model for drones, allows for pre-programmed routes, enabling truly unmanned operation. Unmanned drone systems typically include an intelligent drone platform, an intelligent parking bay, a control system, auxiliary monitoring functions, a communication system, and software. The intelligent parking bay, acting as a drone power station, not only stores and accommodates non-operating drones but also automatically recharges them, reducing operator effort and improving the drone's operational cycle efficiency.

[0003] A smart parking bay typically includes a hatch opening and closing mechanism, a drone centering mechanism, a lifting mechanism, and an automatic charging and disconnecting mechanism. The drone's centering mechanism automatically returns the drone to its original position through the relative or opposing motion of a horizontal module and a lever mechanism. The lever mechanism not only coordinates with the righting mechanism to center the drone, but also moves the drone's propellers to retract them into the smallest possible space, minimizing the storage footprint of the drone. According to space and design requirements, the lever drive motor is selected with a smaller capacity and a small rated load torque. Therefore, the weight-to-stiffness ratio of the lever is required to be as small as possible. The lever is mostly a slender structure. For drones with larger mass, the sliding friction is larger, so the lever stiffness requirement is higher. For easy installation, the lever head is usually designed with a larger opening or an angular structure. After the drone lands, the stopping position of the blade is very random. If the lever hits the root of the blade, it is easy to get stuck. Moreover, the drone blades are generally made of carbon fiber composite materials, plastic or wood, with low stiffness and a relatively large sliding friction coefficient. Sliding friction is generated when the lever and the blade move relative to each other. If the friction is large, the lever is easy to get stuck when moving the blade, and in severe cases, the blade may break.

[0004] Disadvantages of existing technology:

[0005] (1) There is sliding friction between the existing lever and the blade, and the blade is usually made of carbon fiber composite materials, plastic, wood, etc., which are tough but weak. During the paddling process, the lever and the blade slide relative to each other, and the lever is easily stuck or even causes the blade to break.

[0006] (2) The existing lever head usually has a large opening or sharp corners, and the propeller blades stop at a relatively random position after the drone lands. During the process of shifting the lever and the propeller, the lever head is likely to get stuck on the propeller blades.

[0007] (3) The lever structure is mostly a slender round rod structure with poor rigidity. When the drone is centered, the lever will deform greatly, which will cause the drone to be unable to return to the parking position, affecting the storage and charging of the drone. Summary of the Invention

[0008] In view of this, the present invention aims to propose a lever structure with an anti-stuck function to solve the problem that the lever with large friction force is easy to get stuck when shifting the blade, which may cause the blade to break in severe cases.

[0009] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0010] The present invention provides, in one aspect, a lever structure with an anti-stuck function, comprising a lever body, a first anti-wear hemisphere movably mounted on the top of the lever body via an anti-wear assembly;

[0011] The anti-wear assembly includes a first bearing sleeve and a first limiting assembly. The first bearing sleeve is fixed to the top of the lever, and the first limiting assembly is fixed to the first anti-wear hemisphere. The anti-wear assembly limits the first bearing sleeve in the first anti-wear hemisphere. The first anti-wear hemisphere is installed on the top of the lever body through the first bearing sleeve.

[0012] The first limiting component includes an annular hemispherical retaining ring.

[0013] Furthermore, a cylindrical mounting groove and a first annular groove are provided at the top of the first anti-wear hemisphere. The first annular groove is located below the cylindrical mounting groove. The hemispherical retaining ring is fixed in the first annular groove. The first bearing sleeve passes through the hemispherical retaining ring and is limited in the cylindrical mounting groove by the hemispherical retaining ring.

[0014] Furthermore, a first annular boss is provided on the top of the first bearing sleeve, the outer diameter of the first annular boss is smaller than the diameter of the cylindrical mounting groove, the inner diameter of the hemispherical retaining ring is smaller than the diameter of the first annular boss, and the hemispherical retaining ring is located below the first annular boss of the first bearing sleeve.

[0015] Furthermore, the lever body includes a lever base, a lever inner shaft, and a lever outer shaft. The lever inner shaft is fixed to the lever base through a connecting flange, and the lever outer shaft is rotatably sleeved on the outside of the lever inner shaft through a bearing. The first anti-wear hemisphere is rotatably installed on the top of the lever inner shaft through an anti-wear component.

[0016] Furthermore, three first bolt holes are provided on the top of the inner shaft of the shift rod, a second bolt hole corresponding to the first bolt hole is provided on the first bearing sleeve, and a mounting hole is provided on the top of the first anti-wear hemisphere. After rotation, the mounting holes correspond to the three bolt holes on the first bearing sleeve respectively, and the bolts connect the first bolt hole with the second bolt hole through the mounting hole.

[0017] Furthermore, a connecting flange is mounted on the top of the shift lever base, a cylindrical mounting seat is provided on the connecting flange, the cylindrical mounting seat is cylindrical, a first shaft section is provided at the lower end of the inner shaft of the shift lever, the first shaft section is fixed in the cylindrical mounting seat by bolts, a second shaft section is further provided at the lower end of the inner shaft of the shift lever, the second shaft section is located above the first shaft section, a lower rolling bearing is mounted on the second shaft section, a third shaft section is provided at the upper end of the inner shaft of the shift lever, an upper rolling bearing is mounted on the third shaft section, a first ring groove is provided at the lower end of the outer shaft of the shift lever, the first ring groove is sleeved on the outer wall of the lower rolling bearing, a second ring groove is provided at the upper end of the outer shaft of the shift lever, the second ring groove is sleeved on the outer wall of the upper rolling bearing;

[0018] A fourth shaft segment is provided on the third shaft segment, a first bolt hole is provided on the top of the fourth shaft segment, and the first bearing sleeve is fixed to the top of the fourth shaft segment by means of bolts.

[0019] Furthermore, a semicircular annular groove is provided on the top of the connecting flange, a semicircular support is installed in the semicircular annular groove, the semicircular support is arranged around the outer shaft, a semicircular shaft sleeve is installed in the semicircular support, the bottom of the semicircular shaft sleeve is located in the semicircular annular groove, a shaft sleeve stopper is installed on the side wall of the semicircular support, the width of the shaft sleeve stopper is greater than the thickness of the semicircular support, and the semicircular shaft sleeve is fixed in the semicircular support through the shaft sleeve stopper;

[0020] A half-axle sleeve retaining ring is installed on the top of the semicircular support member, and a rectangular protrusion extends from the side wall of the half-axle sleeve retaining ring, and the end of the rectangular protrusion is in contact with the top of the axle sleeve retaining piece.

[0021] Another aspect provides a lever structure with an anti-seizing function, comprising a lever body, a second anti-wear hemisphere movably mounted on the top of the lever body via an anti-wear assembly;

[0022] The anti-wear assembly includes a second bearing sleeve and a second limiting assembly. The second bearing sleeve is fixed to the top of the lever, and the second limiting assembly is fixed to the second anti-wear hemisphere. The second anti-wear assembly limits the second bearing sleeve in the second anti-wear hemisphere, and the second anti-wear hemisphere is fixed to the top of the lever body through the second bearing sleeve.

[0023] The second limiting assembly includes three arc-shaped stops.

[0024] Furthermore, a second annular boss is provided on the second anti-wear hemisphere, a plurality of arc grooves are provided on the second annular boss, an arc protrusion corresponding to the plurality of arc grooves is provided on the top of the second bearing sleeve, the arc protrusion slides into the top of the second annular boss through the arc groove, and a rectangular groove communicating with the arc groove is also provided on the second annular boss. Three arc-shaped blocks are respectively installed in the corresponding rectangular grooves to limit the second bearing sleeve on the second anti-wear hemisphere.

[0025] Furthermore, a hollow space is provided on the second anti-wear hemisphere, and three arc-shaped blocks and the second annular boss are surrounded by an annular convex edge, the annular convex edge is located below the hollow space, the arc-shaped convex edge of the second bearing sleeve is located in the hollow space, and a second annular groove is provided on the second bearing sleeve, and the annular convex edge is located in the second annular groove.

[0026] Compared with the prior art, the present invention provides a lever structure with an anti-stuck function, which has the following beneficial effects:

[0027] (1) The main body of the shift lever structure of the present invention is composed of a shift lever base, an inner shaft, an outer shaft, a rolling bearing, etc. The shift lever base is connected to the output shaft of the drive motor, the inner shaft is connected to the shift lever base with screws, and the inner shaft and the outer shaft are connected by a rolling bearing, thereby converting the sliding friction between the shift lever and the blade into the rolling friction of the bearing, greatly reducing the friction force and effectively preventing the shift lever from getting stuck when shifting the blade;

[0028] (2) The lever head of the present invention is designed with a wear-resistant hemispherical structure. The sleeve can be made into a separate part or an integral part to be connected to the inner shaft, and the upper rolling bearing is axially fixed. The retaining ring is connected to the wear-resistant hemispherical structure. The hemispherical structure is limited to move within the space between the upper end face of the outer shaft and the lower end face of the bearing sleeve. The wear-resistant hemispherical structure is made of non-metallic material with a low friction coefficient. Through its own low friction force and its own rotation, the lever can smoothly pass the stuck point, avoiding the situation where the lever is stuck and the blade is broken.

[0029] (3) The connection between the lever and the base is designed with a semicircular support member, and a semicircular bushing is provided on the outer axis of the lever and the inner surface of the semicircular support member. The bushing is made of metal or non-metallic material with a small friction coefficient. It can effectively improve the stiffness of the lever and reduce the deformation without affecting the smoothness of the propeller, so that the drone can be smoothly stored and charged. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 This is a structural diagram of a first embodiment of a lever structure with an anti-stuck function according to an embodiment of the present invention;

[0032] Figure 2 This is a structural diagram of the lever body and the connection method described in the embodiment of the present invention;

[0033] Figure 3 A cross-sectional view of the structure of the first embodiment of the present invention;

[0034] Figure 4 For the present invention to create the embodiment of the Figure 3 An enlarged view of part I;

[0035] Figure 5 A partial cross-sectional schematic diagram of the first anti-wear hemispherical mounting structure according to an embodiment of the present invention;

[0036] Figure 6 This is a structural diagram of the first anti-wear hemisphere described in an embodiment of the present invention;

[0037] Figure 7 This is a structural diagram of the first bearing sleeve described in an embodiment of the present invention;

[0038] Figure 8 A partial exploded view of the second embodiment of the present invention;

[0039] Figure 9 This is a diagram of the installation structure of the second anti-wear hemisphere according to an embodiment of the present invention;

[0040] Figure 10 This is a structural diagram of the second anti-wear hemisphere described in an embodiment of the present invention;

[0041] Figure 11 This is a structural diagram of the second bearing sleeve described in an embodiment of the present invention;

[0042] Figure 12 This is a structural diagram of the arc-shaped stopper described in an embodiment of the present invention.

[0043] Description of reference numerals:

[0044] 1. Drive motor; 2. Reducer; 3. First bracket; 4. Push rod mounting seat; 5. Second bracket; 6. Push rod base; 7. Connecting flange; 8. Lower rolling bearing; 9. Push rod inner shaft; 10. Bushing stopper; 11. Semicircular bushing; 12. Semicircular support member; 13. Half bushing retaining ring; 14. Push rod outer shaft; 15. Upper rolling bearing; 16. Hemispherical retaining ring; 17. First bearing bushing; 18. First anti-wear hemispherical body; 61. Column mounting seat; 91. First Shaft section; 92, second shaft section; 93, third shaft section; 94, fourth shaft section; 171, first annular boss; 181, cylindrical mounting groove; 182, first annular groove; 183, mounting hole; 19, second anti-wear hemisphere; 191, hollow space; 192, second annular boss; 193, rectangular groove; 194, arcuate groove; 201, arcuate protrusion; 202, second annular groove; 21, arcuate stopper; 20, second bearing sleeve; 131, rectangular protrusion. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0047] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0049] Example 1:

[0050] like Figures 1 to 7 As shown, a lever structure with an anti-stuck function includes a drive motor 1, a lever body mounted on the drive motor 1, and the lever body includes a lever base 6, a lever inner shaft 9, a lever outer shaft 14, and a first anti-wear hemisphere 18;

[0051] like Figures 1 to 3As shown, the inner shaft 9 of the shift lever is fixed to the shift lever base 6 through the connecting flange 7, and the outer shaft 14 of the shift lever is rotatably sleeved on the outside of the inner shaft 9 of the shift lever through a bearing. The connecting flange 7 is installed on the top of the shift lever base 6. A cylindrical mounting seat 61 is provided on the connecting flange 7. The cylindrical mounting seat 61 is cylindrical. The lower end of the inner shaft 9 of the shift lever is provided with a first shaft section 91, and the first shaft section 91 is fixed in the cylindrical mounting seat 61 by bolts. The lower end of the inner shaft 9 of the shift lever is also provided with a second shaft section 92, and the second shaft section 92 is located above the first shaft section 91. A lower rolling bearing 8 is installed on the second shaft section 92. The upper end of the inner shaft 9 of the shift lever is provided with a third shaft section 93, and an upper rolling bearing 15 is installed on the third shaft section 93. The lower end of the outer shaft 14 of the shift lever is provided with a first ring groove, and the first ring groove is sleeved on the outer wall of the lower rolling bearing 8. The upper end of the outer shaft 14 of the shift lever is provided with a second ring groove, and the second ring groove is sleeved on the outer wall of the upper rolling bearing 15.

[0052] A fourth shaft section 94 is provided on the third shaft section 93, a first bolt hole is provided on the top of the fourth shaft section 94, and a first anti-wear hemisphere 18 is rotatably mounted on the top of the fourth shaft section 94 through an anti-wear assembly;

[0053] During installation, first insert the inner shaft 9 of the shift rod into the cylindrical mounting seat 61 of the connecting flange 7, and fix the inner shaft 9 of the shift rod on the cylindrical mounting seat 61 by bolts. The outer shaft 14 of the shift rod is installed on the outer side of the inner shaft 9 of the shift rod through the upper rolling bearing 15 and the lower rolling bearing 8, so that the rod body of the shift rod is installed. Then fix the connecting flange 7 to the shift rod base 6. The shift rod base 6 is driven by the drive motor 1, and the drive motor 1 is connected to the reducer 2. The output shaft of the reducer 2 is connected to the shift rod base 6. The drive motor 1 and the reducer 2 are both installed on the shift rod mounting seat 4. The shift rod mounting seat 4 is also provided with a first bracket 3 and a second bracket 5. The first bracket 3 and the second bracket 5 are both provided with bearings. The shift rod base 6 is located between the first bracket 3 and the second bracket 5. The output shaft of the reducer 2 passes through the bearing on the first bracket 3 and the shift rod base 6 in sequence, and is rotatably connected to the bearing on the second bracket 5. The rotation angle of the shift rod is driven by the drive motor 1.

[0054] like Figure 2 As shown, a semicircular annular groove is provided on the top of the connecting flange 7, a semicircular support member 12 is installed in the semicircular annular groove, the semicircular support member 12 is arranged around the outer shaft, a semicircular shaft sleeve 11 is installed in the semicircular support member 12, the bottom of the semicircular shaft sleeve 11 is located in the semicircular annular groove, a shaft sleeve stopper 10 is installed on the side wall of the semicircular support member 12, the width of the shaft sleeve stopper 10 is greater than the thickness of the semicircular support member 12, and the semicircular shaft sleeve 11 is fixed in the semicircular support member 12 through the shaft sleeve stopper 10;

[0055] A half-shaft sleeve retaining ring 13 is installed on the top of the semicircular support member 12, and a rectangular protrusion 131 extends from the side wall of the half-shaft sleeve retaining ring 13, and the end of the rectangular protrusion 131 is in contact with the top of the shaft sleeve retaining piece 10;

[0056] The semicircular support member 12 is installed on the outside of the shift rod outer shaft 14 to support the shift rod outer shaft 14. In order to reduce the friction between the shift rod outer shaft 14 and the semicircular support member 12, a semicircular sleeve 11 is used. The semicircular sleeve 11 is located between the semicircular support member 12 and the shift rod outer shaft 14. The semicircular sleeve 11 is fixed in the semicircular support member 12 by two sleeve blocks 10 and a semi-sleeve block ring 13.

[0057] like Figure 1 、 Figures 4 to 7 As shown, the anti-wear assembly includes a first bearing sleeve 17 and a limiting assembly. The first bearing sleeve 17 is fixed to the top of the lever, and the limiting assembly is fixed to the first anti-wear hemisphere 18. The anti-wear assembly limits the first bearing sleeve 17 in the first anti-wear hemisphere 18. The first anti-wear hemisphere 18 is fixed to the top of the lever body through the first bearing sleeve 17.

[0058] The first bearing sleeve 17 axially fixes the upper rolling bearing 15 .

[0059] like Figure 1 、 Figures 4 to 7 As shown, the limiting assembly includes a hemispherical retaining ring 16, which is annular. A cylindrical mounting groove 181 and a first annular groove 182 are provided on the top of the first anti-wear hemisphere 18. The first annular groove 182 is located below the cylindrical mounting groove 181. The hemispherical retaining ring 16 is fixed in the first annular groove 182. The first bearing sleeve 17 passes through the hemispherical retaining ring 16 and is limited in the cylindrical mounting groove 181 by the hemispherical retaining ring 16.

[0060] like Figure 1 、 Figures 4 to 7 As shown, a first annular boss 171 is provided on the top of the first bearing sleeve 17. The outer diameter of the first annular boss 171 is smaller than the diameter of the cylindrical mounting groove 181. The inner diameter of the hemispherical retaining ring 16 is smaller than the diameter of the first annular boss 171. The hemispherical retaining ring 16 is located below the first annular boss 171 of the first bearing sleeve.

[0061] When installing the first anti-wear hemisphere 18, first insert the first bearing sleeve 17 into the cylindrical mounting groove 181 of the first anti-wear hemisphere 18, and then fix the hemispherical retaining ring 16 in the first annular groove by bolts. The hemispherical retaining ring 16 is sleeved on the outside of the first bearing sleeve 17. The cross-sectional view of the first bearing sleeve is an inverted L-shape. A first annular boss 171 is provided on the top of the first bearing sleeve 17. Therefore, the hemispherical retaining ring 16 is located below the first annular boss 171. There is a gap between the hemispherical retaining ring 16 and the first bearing sleeve 17, which facilitates the rotation and movement of the first anti-wear hemisphere 18. Since the gap is small, the moving position of the first anti-wear hemisphere 18 is small.

[0062] like Figure 1 、 Figures 4 to 7 As shown, three first bolt holes are provided on the top of the inner shaft 9 of the shift lever, and second bolt holes corresponding to the first bolt holes are provided on the first bearing sleeve 17. A mounting hole 183 is provided on the top of the first anti-wear hemisphere 18. After rotation, the mounting hole 183 corresponds to the three bolt holes on the first bearing sleeve 17 respectively, and the bolts connect the first bolt hole with the second bolt hole through the mounting hole 183.

[0063] Then, the first anti-wear hemisphere 18 is installed on the inner shaft 9 of the shift lever through the mounting hole 183 on the top of the first anti-wear hemisphere 18. By rotating the first anti-wear hemisphere 18, the mounting holes 183 on the top of the first anti-wear hemisphere 18 correspond to the three bolt holes respectively during the rotation process. Therefore, the bolts are installed on the first bearing sleeve 17 through the mounting holes 183 to fix the first bearing sleeve 17 on the inner shaft 9 of the shift lever. The first anti-wear hemisphere 18 is provided with a mounting hole 183 on the top of the first anti-wear hemisphere 18 to prevent dust from easily entering the top of multiple first anti-wear hemispheres 18 and affecting the rotation of the first anti-wear hemisphere 18. In addition, if there are too many mounting holes, the blade tip will easily get stuck in the hole, causing the blade to get stuck.

[0064] The first anti-wear hemisphere 18 can automatically move in the space defined by the first bearing sleeve and the outer shaft of the shifting rod.

[0065] Example 2:

[0066] like Figures 8 to 12 As shown, a lever structure with an anti-stuck function includes a drive motor 1, a lever body mounted on the drive motor 1, and the lever body includes a lever base 6, a lever inner shaft 9, a lever outer shaft 14, and a second anti-wear hemisphere 19;

[0067] like Figures 1 to 3 As shown, the inner shaft 9 of the shift lever is fixed to the shift lever base 6 through the connecting flange 7, and the outer shaft 14 of the shift lever is rotatably sleeved on the outside of the inner shaft 9 of the shift lever through a bearing. The connecting flange 7 is installed on the top of the shift lever base 6. A cylindrical mounting seat 61 is provided on the connecting flange 7. The cylindrical mounting seat 61 is cylindrical. The lower end of the inner shaft 9 of the shift lever is provided with a first shaft section 91, and the first shaft section 91 is fixed in the cylindrical mounting seat 61 by bolts. The lower end of the inner shaft 9 of the shift lever is also provided with a second shaft section 92, and the second shaft section 92 is located above the first shaft section 91. A lower rolling bearing 8 is installed on the second shaft section 92. The upper end of the inner shaft 9 of the shift lever is provided with a third shaft section 93, and an upper rolling bearing 15 is installed on the third shaft section 93. The lower end of the outer shaft 14 of the shift lever is provided with a first ring groove, and the first ring groove is sleeved on the outer wall of the lower rolling bearing 8. The upper end of the outer shaft 14 of the shift lever is provided with a second ring groove, and the second ring groove is sleeved on the outer wall of the upper rolling bearing 15.

[0068] A fourth shaft section 94 is provided on the third shaft section 93, a first bolt hole is provided on the top of the fourth shaft section 94, and a first anti-wear hemisphere 18 is rotatably mounted on the top of the fourth shaft section 94 through an anti-wear assembly;

[0069] During installation, first insert the inner shaft 9 of the derailleur rod into the cylindrical mounting seat 61 of the connecting flange 7, and fix the inner shaft 9 of the derailleur rod on the cylindrical mounting seat 61 by bolts. The outer shaft 14 of the derailleur rod is installed on the outer side of the inner shaft 9 of the derailleur rod through the upper rolling bearing 15 and the lower rolling bearing 8. The rod body of the derailleur rod is thus installed. Then the connecting flange 7 is fixed to the derailleur rod base 6. The derailleur rod base 6 is driven by the driving motor 1, and the driving motor 1 is connected to the reducer 2. The output shaft of the reducer 2 is connected to the derailleur rod base 6. The driving motor 1 and the reducer 2 are both installed on the derailleur rod mounting seat 4. The derailleur rod mounting seat 4 is also provided with a first bracket 3 and a second bracket 5. The first bracket 3 and the second bracket 5 are both provided with bearings. The derailleur rod base 6 is located between the first bracket 3 and the second bracket 5. The output shaft of the reducer 2 passes through the bearing on the first bracket 3 and the derailleur rod base 6 in sequence, and is rotatably connected to the bearing on the second bracket 5. The rotation angle of the derailleur rod is driven by the driving motor 1.

[0070] like Figure 2 As shown, a semicircular annular groove is provided on the top of the connecting flange 7, a semicircular support member 12 is installed in the semicircular annular groove, the semicircular support member 12 is arranged around the outer shaft, a semicircular shaft sleeve 11 is installed in the semicircular support member 12, the bottom of the semicircular shaft sleeve 11 is located in the semicircular annular groove, a shaft sleeve stopper 10 is installed on the side wall of the semicircular support member 12, the width of the shaft sleeve stopper 10 is greater than the thickness of the semicircular support member 12, and the semicircular shaft sleeve 11 is fixed in the semicircular support member 12 through the shaft sleeve stopper 10;

[0071] A half-shaft sleeve retaining ring 13 is installed on the top of the semicircular support member 12. A rectangular protrusion extends from the side wall of the half-shaft sleeve retaining ring 13, and the end of the rectangular protrusion fits with the top of the shaft sleeve retaining piece 10;

[0072] The semicircular support member 12 is installed on the outside of the shift rod outer shaft 14 to support the shift rod outer shaft 14. In order to reduce the friction between the shift rod outer shaft 14 and the semicircular support member 12, a semicircular sleeve 11 is used. The semicircular sleeve 11 is located between the semicircular support member 12 and the shift rod outer shaft 14. The semicircular sleeve 11 is fixed in the semicircular support member 12 by two sleeve blocks 10 and a semi-sleeve block ring 13.

[0073] like Figures 8 to 12 As shown, the anti-wear assembly includes a second bearing sleeve 20 and a second limiting assembly. The second bearing sleeve 20 is fixed to the top of the lever, and the second limiting assembly is fixed to the second anti-wear hemisphere 19. The second anti-wear assembly limits the second bearing sleeve 20 in the second anti-wear hemisphere 19. The second anti-wear hemisphere 19 is fixed to the top of the lever body through the second bearing sleeve 20.

[0074] The second limiting assembly includes three arc-shaped blocks 21, a second annular boss 192 is provided on the second anti-wear hemisphere 19, and a plurality of arc grooves 194 are provided on the second annular boss 192. The top of the second bearing sleeve 20 is provided with an arc-shaped protrusion 201 corresponding to the plurality of arc grooves 194. The arc protrusion 201 slides into the top of the second annular boss 192 through the arc groove 194. The second annular boss 192 is also provided with a rectangular groove 193 communicating with the arc groove 194. The three arc-shaped blocks 21 are respectively installed in the corresponding rectangular grooves 193 to limit the second bearing sleeve on the second anti-wear hemisphere 19;

[0075] A hollow space 191 is provided on the second anti-wear hemisphere 19, and three arc-shaped blocks 21 and the second annular boss 192 are surrounded by an annular convex edge. The annular convex edge is located below the hollow space 191, and the arc-shaped convex block of the second bearing sleeve is located in the hollow space 191. A second annular groove 202 is provided on the second bearing sleeve, and the annular convex edge is located in the second annular groove.

[0076] When installing the second anti-wear hemisphere 19, first install the second bearing sleeve 20 into the hollow space 191 of the second anti-wear hemisphere 19. The bottom of the second anti-wear hemisphere 19 is provided with three arc grooves 194. The three arc grooves 194 correspond to the three arc protrusions 201 on the top of the second bearing sleeve 20. The three protrusions enter the hollow space 191 through the three arc grooves 194. Then install the three arc stops 21. One end face of the arc stop 21 is arc-shaped. The three arc stops 21 are located in the rectangular groove 193. The three arc stops 21 and the second annular boss are surrounded by an annular protrusion. At this time, the annular convex edge is located in the second annular groove 202 of the second bearing sleeve 20. There is a gap between the annular protrusion and the second annular groove 202, which facilitates the movement of the second anti-wear hemisphere 19.

[0077] like Figure 8 As shown, three first bolt holes are provided on the top of the inner shaft 9 of the shift lever, and second bolt holes corresponding to the first bolt holes are provided on the first bearing sleeve 17. A mounting hole 183 is provided on the top of the first anti-wear hemisphere 18. After rotation, the mounting hole 183 corresponds to the three bolt holes on the first bearing sleeve 17 respectively, and the bolts connect the first bolt hole with the second bolt hole through the mounting hole 183.

[0078] Then, the second anti-wear hemisphere 19 is installed on the inner shaft 9 of the shift rod through the mounting hole 183 on the top of the first anti-wear hemisphere 18. By rotating the second anti-wear hemisphere 19, the mounting holes 183 on the top of the second anti-wear hemisphere 19 correspond to the three bolt holes respectively during the rotation process. Therefore, the bolts are installed on the first bearing sleeve 17 through the mounting holes 183 to fix the first bearing sleeve 17 on the inner shaft 9 of the shift rod. A mounting hole 183 is provided on the top of the second anti-wear hemisphere 19 to prevent dust from easily entering the top of multiple first anti-wear hemispheres 18 and affecting the rotation of the second anti-wear hemisphere 19. In addition, there are too many mounting holes, which will cause the blade tip to easily get stuck in the hole, causing the blade to get stuck.

[0079] The anti-wear hemisphere is made of non-metallic material with low friction coefficient;

[0080] The above-mentioned two embodiments of the driving part and the lever body have similar structures, and the difference lies in the two anti-wear hemispherical structures.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lever structure with an anti-stuck function, characterized in that: It comprises a lever body, and a first anti-wear hemisphere (18) movably mounted on the top of the lever body through an anti-wear component; The anti-wear component comprises a first bearing sleeve (17) and a first limiting component. The first bearing sleeve (17) is fixed on the top of the lever. The first limiting component is fixed on the first anti-wear hemisphere (18). The anti-wear component limits the first bearing sleeve (17) in the first anti-wear hemisphere (18). The first anti-wear hemisphere (18) is installed on the top of the lever body through the first bearing sleeve (17). The first limiting assembly comprises an annular hemispherical retaining ring (16); A cylindrical mounting groove (181) and a first annular groove (182) are provided at the top of the first anti-wear hemispherical body (18); the first annular groove (182) is located below the cylindrical mounting groove (181); the hemispherical retaining ring (16) is fixed in the first annular groove (182); and the first bearing sleeve (17) passes through the hemispherical retaining ring (16) and is limited in the cylindrical mounting groove (181) by the hemispherical retaining ring (16).

2. The lever structure with anti-stuck function according to claim 1, characterized in that: A first annular boss (171) is provided on the top of the first bearing sleeve (17); the outer diameter of the first annular boss (171) is smaller than the diameter of the cylindrical mounting groove (181); the inner diameter of the hemispherical retaining ring (16) is smaller than the diameter of the first annular boss (171); and the hemispherical retaining ring (16) is located below the first annular boss (171) of the first bearing sleeve (17).

3. The lever structure with anti-stuck function according to claim 1, characterized in that: The lever body comprises a lever base (6), a lever inner shaft (9), and a lever outer shaft (14); the lever inner shaft (9) is fixed to the lever base (6) via a connecting flange (7); the lever outer shaft (14) is rotatably sleeved on the outside of the lever inner shaft (9) via a bearing; and a first anti-wear hemisphere (18) is rotatably mounted on the top of the lever inner shaft (9) via an anti-wear component.

4. The lever structure with anti-stuck function according to claim 3, characterized in that: The top of the inner shaft (9) of the lever is provided with three first bolt holes, the first bearing sleeve (17) is provided with second bolt holes corresponding to the first bolt holes, the top of the first anti-wear hemisphere (18) is provided with a mounting hole (183), the mounting hole (183) respectively corresponds to the three bolt holes on the first bearing sleeve (17) after rotation, and the bolts connect the first bolt hole with the second bolt hole through the mounting hole (183).

5. The lever structure with anti-stuck function according to claim 4, characterized in that: The connecting flange (7) is mounted on the top of the lever base (6). The connecting flange (7) is provided with a columnar mounting seat (61). The columnar mounting seat (61) is cylindrical. The lower end of the lever inner shaft (9) is provided with a first shaft section (91). The first shaft section (91) is fixed in the columnar mounting seat (61) by bolts. The lower end of the lever inner shaft (9) is also provided with a second shaft section (92). The second shaft section (92) is located above the first shaft section (91). A lower rolling bearing (8) is mounted on the second shaft section (92). The upper end of the lever inner shaft (9) is provided with a third shaft section (93). An upper rolling bearing (15) is mounted on the third shaft section (93). The lower end of the lever outer shaft (14) is provided with a first ring groove. The first ring groove is sleeved on the outer wall of the lower rolling bearing (8). The upper end of the lever outer shaft (14) is provided with a second ring groove. The second ring groove is sleeved on the outer wall of the upper rolling bearing (15). A fourth shaft section (94) is arranged on the third shaft section (93), a first bolt hole is arranged on the top of the fourth shaft section (94), and a first bearing sleeve (17) is fixed on the top of the fourth shaft section (94) by means of bolts.

6. The lever structure with anti-stuck function according to claim 5, characterized in that: A semicircular annular groove is provided on the top of the connecting flange (7), a semicircular support member (12) is installed in the semicircular annular groove, the semicircular support member (12) is arranged around the outer shaft of the shifting rod, a semicircular shaft sleeve (11) is installed in the semicircular support member (12), the bottom of the semicircular shaft sleeve (11) is located in the semicircular annular groove, a shaft sleeve stopper (10) is installed on the side wall of the semicircular support member (12), the width of the shaft sleeve stopper (10) is greater than the thickness of the semicircular support member (12), and the semicircular shaft sleeve (11) is fixed in the semicircular support member (12) through the shaft sleeve stopper (10); A semi-shaft sleeve retaining ring (13) is installed on the top of the semicircular support member (12), a rectangular protrusion (131) extends from the side wall of the semi-shaft sleeve retaining ring (13), and the end of the rectangular protrusion (131) is in contact with the top of the shaft sleeve retaining piece (10).

7. A lever structure with an anti-stuck function, characterized in that: It comprises a lever body and a second anti-wear hemisphere (19) movably mounted on the top of the lever body via an anti-wear component; The anti-wear component comprises a second bearing sleeve (20) and a second limiting component. The second bearing sleeve (20) is fixed to the top of the lever. The second limiting component is fixed to the second anti-wear hemisphere (19). The second anti-wear component limits the second bearing sleeve (20) in the second anti-wear hemisphere (19). The second anti-wear hemisphere (19) is fixed to the top of the lever body through the second bearing sleeve (20). The second limiting assembly comprises three arc-shaped stoppers (21); A second annular boss (192) is provided on the second anti-wear hemisphere (19), and a plurality of arc grooves (194) are provided on the second annular boss (192). An arc protrusion (201) corresponding to the plurality of arc grooves (194) is provided on the top of the second bearing sleeve (20). The arc protrusion (201) slides into the top of the second annular boss (192) through the arc groove (194). A rectangular groove (193) communicating with the arc groove (194) is also provided on the second annular boss (192). Three arc stoppers (21) are respectively installed in the corresponding rectangular grooves (193) to limit the second bearing sleeve on the second anti-wear hemisphere (19).

8. The lever structure with anti-stuck function according to claim 7, characterized in that: The second anti-wear hemispherical body (19) is provided with a hollow space (191), three arc-shaped blocks (21) and a second annular boss (192) are surrounded to form an annular convex edge, the annular convex edge is located below the hollow space (191), the arc-shaped block of the second bearing sleeve is located in the hollow space (191), the second bearing sleeve is provided with a second annular groove (202), and the annular convex edge is located in the second annular groove.

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