Locking mechanism for rotation of manual drive plate and gear and planing handle

Abstract

The utility model provides a manual drive plate and gear rotation locking mechanism which is applied to the technical field of medical equipment, the locking mechanism is applied to a planing handle, the planing handle comprises a hollow shell, a manual drive plate and a gear, and the manual drive plate and the gear are arranged on the hollow shell; the locking mechanism comprises a locking piece and a rotating pin, the rotating pin penetrates through the locking piece and the hollow shell to rotationally connect the locking piece into the hollow shell, the locking piece comprises a locking end meshed with the gear and a movable end extending to the outside of the hollow shell, and when the hand makes contact with the movable end and pushes the movable end to rotate, the locking piece can rotate by taking the rotating pin as a rotating shaft; and the locking end is driven to rotate, so that the locking end is close to or far away from the gear, and the gear is locked or unlocked. Therefore, the locking mechanism has the advantages of being simple in structure, capable of directly locking or unlocking the tool bit and convenient to maintain.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and more specifically, to a manual dial and a gear rotation locking mechanism and a planing handle. Background Art

[0002] When the current minimally invasive intracavitary planing operating handle is used to treat lesion tissue, it is often necessary to frequently adjust the working angle of the blade of the planing handle due to the complex shape of the lesion tissue, such as the ear, nose and throat. If the angle of the entire planing handle is rotated to adjust the working angle of the blade, since the planing handle is often connected to a flushing device, adjusting the blade by rotating the entire machine is very troublesome, which affects the efficiency of the operation. Therefore, a planing handle with an independently adjustable blade has been developed on the market. In this type of handle, there is an independent control structure for locking the blade, i.e., a locking mechanism. The locking mechanism in the prior art cannot directly contact the gear that drives the cutter head, so it often adopts a structure that directly acts on the manual dial, and indirectly controls the locking of the cutter head by controlling the locking of the manual dial. For example, the Chinese utility model with publication number CN117297719B discloses a structure for locking the cutter head, by arranging a paddle protruding from the housing on one side of the manual dial, and by pushing the movement of the paddle, the push rod of the paddle engages or releases the bushing of the manual dial to lock or release the manual paddle, thereby indirectly achieving the locking or release of the cutter head. However, the transmission of force of this locking mechanism that does not directly act on the cutter head is relatively complicated, and it is necessary to act on the manual dial first and then on the cutter head, which is not conducive to the simplification of the structure; and when the locking function fails, the maintenance of the planing handle requires checking the connection relationship between the locking mechanism and the manual dial, and the connection relationship between the manual dial and the cutter head, and the maintenance is very complicated. Therefore, the locking mechanism that controls the rotation of the cutter head in the prior art has a complex connection structure, cannot directly control the locking of the cutter head, and has the problem of troublesome maintenance.

[0003] In view of the above problems, the existing technology needs to be improved urgently. Utility Model Content

[0004] The purpose of the present application is to provide a manual dial and gear rotation locking mechanism and a planing handle, by providing a locking member directly connected to the gear that controls the rotation of the cutter head, and a rotating pin, so that the locking member can be rotatably engaged with the gear or away from the gear, thereby achieving the locking or unlocking of the cutter head. It has the beneficial effects of simple structure, the ability to directly lock or unlock the cutter head, and easy maintenance.

[0005] In the first aspect, the present application provides a manual dial and a gear rotation locking mechanism, and the technical solution is as follows:

[0006] In a first aspect, a locking mechanism for the rotation of a manual dial and a gear is provided in a planing handle, wherein the planing handle comprises a hollow shell, and a manual dial which is arranged on the hollow shell and rotates radially around the hollow shell, and a gear which rotates axially around the hollow shell, wherein the gear is engaged with the manual dial, and the gear is rotated by turning the manual dial, and the locking mechanism comprises a locking member and a rotating pin;

[0007] The rotating pin passes through the hollow shell and the locking member to rotatably connect the locking member in the hollow shell;

[0008] The locking member includes a locking end meshing with the gear and a movable end extending to the outside of the hollow shell; with the rotating pin as the rotating shaft, the movable end is moved to drive the locking end to rotate, so that the locking end is close to or away from the gear to lock or unlock the gear.

[0009] The present application provides a locking mechanism for the rotation of a manual dial and a gear, which is applied to a planing handle. The planing handle includes a hollow shell, and a manual dial which is arranged on the hollow shell and rotates radially around the hollow shell, and a gear which rotates axially around the hollow shell. The gear is connected to a cutter head, and the rotation of the gear can drive the cutter head to rotate. The manual dial is manually dialed, and the rotation direction of the force converted by the gear meshing with the manual dial is controlled to control the rotation angle of the cutter head. The locking mechanism includes a locking member and a rotating pin. The rotating pin passes through the locking member and the hollow shell to rotate and connect the locking member in the hollow shell and rotate around the rotating pin. The locking member includes a locking end meshing with the gear and a movable end extending to the outside of the hollow shell. When a person touches the movable end by hand and pushes the movable end to rotate, the locking member can use the rotating pin as a rotating shaft to drive the locking end to rotate, so that the locking end approaches or moves away from the gear to achieve locking or unlocking of the gear. The locking mechanism has a simple structure and can directly contact the gear to lock the gear, thereby directly locking or unlocking the cutter head. When the locking function fails, only the connection between the locking member and the gear needs to be inspected, and maintenance is very convenient. Therefore, the locking mechanism has the beneficial effects of simple structure, being able to directly lock or unlock the cutter head, and being easy to maintain.

[0010] Furthermore, the locking mechanism also includes a positioning component, which is arranged on the side of the locking member away from the gear, and includes a spring and a steel ball. One end of the spring is fixed to the hollow shell, and the other end is connected to the steel ball. The steel ball is rotatably arranged between the spring and the locking member, and contacts with the locking member to position the locking member and limit the displacement of the locking member.

[0011] The present application provides a locking mechanism for manual dial and gear rotation, which also includes a positioning component, which is used to fix the locking mechanism. When a person manually moves the movable end, the locking member can stably maintain the locked or unlocked state after locking or unlocking the gear, without the need for continuous manual force, thereby improving the user experience. The positioning component is arranged on the side of the locking member away from the gear, which can avoid the positioning component from interfering with the operation of the cutter head. The positioning component includes a spring and a steel ball, one end of the spring is fixed to the hollow shell, and the other end is connected to the steel ball. The steel ball is rotatably arranged between the spring and the locking member. When a person manually moves the locking member in the direction where the positioning component is located, that is, away from the gear, the locking member squeezes the steel ball and the spring. In the direction of spring expansion and contraction, the steel ball contacts the locking member, thereby limiting the displacement of the locking member and fixing the locking member. When a person manually moves the locking member in the direction close to the gear, the steel ball rotates in the locking member and the spring, the spring is deformed, and the steel ball is pushed out to press the locking member tightly, thereby limiting the displacement of the locking member and fixing the locking member. Therefore, the locking member can maintain the locked or unlocked state for a long time after locking or unlocking the gear without external force, without the need for continuous manual force, thereby improving the user experience.

[0012] Furthermore, the positioning assembly also includes a locking pin and a locking screw. The locking pin is arranged along the stretching direction of the spring and contacts the end of the spring away from the steel ball to fix the spring; the locking screw passes through the hollow shell and the locking pin to fix the locking pin in the hollow shell.

[0013] The present application provides a locking mechanism for manual dial and gear rotation, the positioning assembly also includes a locking pin and a set screw, the locking pin is arranged along the stretching direction of the spring, and is used to contact the end of the spring away from the steel ball, so as to prevent the spring from being directly connected to the hollow shell and causing damage to the hollow shell when the spring is deformed. The set screw passes through the locking pin and the hollow shell, fixes the locking pin in the hollow shell, and ensures the stability of the locking pin connection.

[0014] Furthermore, the positioning assembly and the rotating pin are arranged alternately.

[0015] The present application provides a locking mechanism for manual dial and gear rotation, in which the positioning assembly and the rotating pin are staggered, that is, the steel ball in the positioning assembly is staggeredly connected with the rotation center of the locking member, and when the locking member rotates around the rotating pin to lock and unlock the gear, the steel ball can resist the locking member and push the locking member against the hollow shell opposite to the steel ball, thereby limiting the displacement of the locking member and fixing the locking member more stably.

[0016] Furthermore, a circular arc groove matching the outer surface of the steel ball is provided at a position on the locking member that contacts the steel ball.

[0017] Furthermore, two arc grooves are arranged side by side.

[0018] Furthermore, the locking end is provided with a tooth piece protruding from the surface of the locking member, and the tooth piece is meshed with the gear.

[0019] Furthermore, the movable end is provided with a rotating dial, the rotating dial is a cylinder, and the arc surface of the rotating dial faces the outside of the hollow shell.

[0020] Furthermore, the rotating dial is provided with anti-slip grooves to facilitate the rotating dial to be turned by fingers.

[0021] In the second aspect, a planing handle comprises the above-mentioned manual dial and gear rotation locking mechanism, the planing handle comprises a hollow shell, on which are provided a manual dial that rotates radially around the hollow shell, a gear that rotates axially around the hollow shell, and a locking mounting portion that is arranged opposite to the manual dial, the locking mounting portion being provided with a mounting through hole connected to the gear, and an inclined opening being provided on a side of the mounting through hole close to the outside, the inclined opening being used to accommodate the locking mechanism so that the locking mechanism can rotate in the inclined opening.

[0022] Beneficial effects: The present application provides a locking mechanism for the rotation of a manual dial and a gear, and a planing handle. The locking mechanism is applied to the planing handle. The planing handle includes a hollow shell, and a manual dial arranged on the hollow shell, which rotates radially around the hollow shell, and a gear which rotates axially around the hollow shell. The gear is connected to a cutter head, and the rotation of the gear can drive the cutter head to rotate. The manual dial is manually turned, and the rotation direction of the force converted by the gear meshing with the manual dial is controlled to control the rotation angle of the cutter head. The locking mechanism includes a locking member and a rotating pin. The rotating pin passes through the locking member and the hollow shell to rotate and connect the locking member in the hollow shell and rotate around the rotating pin. The locking member includes a locking end meshing with the gear and a movable end extending to the outside of the hollow shell. When a person touches the movable end by hand and pushes the movable end to rotate, the locking member can use the rotating pin as a rotating shaft to drive the locking end to rotate, so that the locking end approaches or moves away from the gear to achieve locking or unlocking of the gear. The locking mechanism has a simple structure and can directly contact the gear to lock the gear, thereby directly locking or unlocking the cutter head. When the locking function fails, only the connection between the locking member and the gear needs to be inspected, and maintenance is very convenient. Therefore, the locking mechanism has the beneficial effects of simple structure, being able to directly lock or unlock the cutter head, and being easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 An exploded view of a manual dial and gear rotation locking mechanism provided in the present application.

[0024] Figure 2A cross-sectional view of a manual dial and gear rotation locking mechanism provided in the present application.

[0025] Figure 3 An enlarged view of the locking mechanism provided for this application.

[0026] Figure 4 A three-dimensional view of the locking member provided for this application.

[0027] Figure 5 A cross-sectional view of the locking mechanism provided in the present application locking the gear.

[0028] Figure 6 A cross-sectional view of the locking mechanism provided in the present application unlocking the gear.

[0029] In the figure: 1. cutter head; 11. gear; 2. manual dial; 3. hollow shell; 4. rotating pin; 5. locking piece; 6. steel ball; 7. spring; 8. set screw; 9. locking pin; 51. locking end; 52. movable end; 53. rotating dial; 531. anti-slip pattern; 54. arc groove; 55. tooth piece; 31. mounting through hole; 32. inclined opening. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application usually described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the prior art, in order to control the locking of the cutter head, the locking mechanism is usually connected to the manual dial, and the locking or unlocking of the cutter head is indirectly controlled by the manual dial. The transmission of force is relatively complicated, and it is necessary to act on the manual dial first and then on the cutter head, which is not conducive to the simplification of the structure; and when the locking function fails, the maintenance of the planer handle requires checking the connection relationship between the locking mechanism and the manual dial, as well as the connection relationship between the manual dial and the cutter head, and the maintenance is very complicated.

[0033] Please refer to Figures 1 to 6In the first aspect, a locking mechanism for rotating a manual dial 2 and a gear 11 is provided, and the locking mechanism is applied to a planing handle. The planing handle includes a hollow shell 3, and a manual dial 2 which is arranged on the hollow shell 3 and rotates radially around the hollow shell 3, and a gear 11 which rotates axially around the hollow shell 3. The gear 11 is meshed with the manual dial 2, and the manual dial 2 is turned to drive the gear 11 to rotate. The locking mechanism includes a locking member 5 and a rotating pin 4.

[0034] The rotating pin 4 passes through the hollow shell 3 and the locking member 5, and the locking member 5 is rotatably connected in the hollow shell 3;

[0035] The locking member 5 includes a locking end 51 meshing with the gear 11, and a movable end 52 extending to the outside of the hollow shell 3; with the rotating pin 4 as the rotating axis, the movable end 52 is moved to drive the locking end 51 to rotate, so that the locking end 51 is close to or away from the gear 11 to lock or unlock the gear 11.

[0036] Please refer to Figures 1 to 3 In practical applications, the locking mechanism is applied to a planing handle, which has a hollow shell 3 and a manual dial 2 arranged on the hollow shell 3 and radially rotating around the hollow shell 3, so that the manual dial 2 can be rotated by hand, thereby driving the gear 11 meshing with the manual dial 2 to rotate, and the gear 11 connects the cutter head 1 to rotate axially around the hollow shell 3, so that the cutter head 1 can rotate independently under the cooperation of the manual dial 2 and the gear 11 to adjust the angle without rotating the entire planing handle.

[0037] The locking mechanism is arranged in the hollow shell 3, does not occupy extra space, and is conducive to the miniaturized design of the planing handle. The locking mechanism includes a rotating pin 4 and a locking member 5. The rotating pin 4 is a cylinder, which is convenient for passing through the locking member 5 and the hollow shell 3, and rotatingly connecting the locking member 5 to the hollow shell 3. The two ends of the rotating pin 4 are fixedly connected to the hollow shell 3, and the middle is rotationally connected to the locking member 5. The arc surface of the rotating pin 4 is rotationally connected to the locking member 5, which can better enable the locking member 5 to rotate on the rotating pin 4. Among them, the size of the rotating pin 4 is relatively small. Specifically, the cross-sectional diameter of the rotating pin 4 is smaller than the width of the locking member 5, which is convenient for the rotating pin 4 to pass through the locking member 5 and rotationally connect it to the hollow shell 3.

[0038] In actual application, the locking member 5 includes a locking end 51 meshing with the gear 11, and a movable end 52 extending to the outside of the hollow shell 3, wherein the overall structure of the locking member 5 can be set as a regular body with a parallelogram cross-section, the locking end 51 and the movable end 52 of the locking member 5 are arranged opposite to each other, and the connecting line between the two is the longer diagonal line in the parallelogram, so that the locking member 5 can achieve locking of the gear 11 while saving space as much as possible. Preferably, the rotating pin 4 can be arranged on the shorter diagonal line in the parallelogram, so that when the locking member 5 rotates around the rotating pin 4, the locking end 51 and the movable end 52 are balanced in force, and when the movable end 52 is manually moved, the locking end 51 can rotate in the opposite direction of the movable end 52, such as when the movable end 52 is manually moved close to the gear 11, the locking end 51 is moved away from the gear 11, and the gear 11 is unlocked; when the movable end 52 is manually moved away from the gear 11, the locking end 51 is moved close to the gear 11, and the gear 11 is locked. When the locking end 51 unlocks or locks the gear 11, the two opposite sides of the locking member 5 respectively contact the hollow shell 3 located on both sides of the locking member 5, and the displacement of the locking member 5 is limited to maintain the stable state of the locking member 5 after locking or unlocking the gear 11.

[0039] Among them, the movable part extends to the outside of the hollow shell 3, which is convenient for people to contact the locking part 5 by hand and turn the locking part 5 to rotate, so as to lock or unlock the gear 11. The structure is simple and the operation is convenient. During maintenance, only the rotating pin 4 needs to be removed to remove the locking part 5 for inspection, which is very convenient.

[0040] Furthermore, the locking mechanism also includes a positioning component, which is arranged on the side of the locking member 5 away from the gear 11, and includes a spring 7 and a steel ball 6. One end of the spring 7 is fixed to the hollow shell 3, and the other end is connected to the steel ball 6. The steel ball 6 is rotatably arranged between the spring 7 and the locking member 5, and contacts with the locking member 5 to position the locking member 5 and limit the displacement of the locking member 5.

[0041] In practical applications, the locking mechanism further includes a positioning component, which is used to maintain the locking member 5 in a state of locking or unlocking the gear 11, to prevent the human hand from continuously applying force to the locking member 5, so as to maintain the stability of the locking member 5. The positioning component is arranged on the side of the locking member 5 away from the gear 11, that is, away from the cutter head 1, which can effectively prevent the positioning component from interfering with the rotation of the cutter head 1. The positioning component includes a spring 7 and a steel ball 6, one end of the spring 7 is fixed to the hollow shell 3, and the other end is connected to the steel ball 6, the size of the steel ball 6 is larger than the diameter of the cross section of the spring 7, to prevent the steel ball 6 from entering the spring 7.

[0042] In practical applications, specific reference Figure 5 as well as Figure 6, the steel ball 6 is rotatably arranged between the locking member 5 and the spring 7. When the locking member 5 rotates away from the gear 11, the locking end 51 squeezes the steel ball 6 to move toward the spring 7, thereby compressing the spring 7. Under the elastic force of the spring 7, the steel ball 6 contacts the locking member 5. After the movable lock is moved to the corresponding position, the two opposite sides of the locking member 5 contact the inner wall of the hollow shell 3. The pressure exerted on the locking member 5 by the spring 7 and the steel ball 6 can limit the displacement of the locking member 5. In the absence of external force driving, the locking member 5 can keep away from the gear 11 and unlock the gear 11; when the locking member 5 is close to the gear 11 and rotates, the spring 7 recovers its own deformation and is then squeezed and compressed by the movable end 52. Under the action of its own elastic force, the spring 7 presses the steel ball 6 onto the locking member 5, and cooperates with the hollow shells 3 on both sides to limit the locking member 5, so as to ensure that the locking member 5 can maintain the locking state of the gear 11 in the absence of external force, without the need for manual continuous pressure, which can effectively improve the user experience.

[0043] Furthermore, the positioning assembly also includes a locking pin 9 and a locking screw 8. The locking pin 9 is arranged along the stretching direction of the spring 7 and contacts the end of the spring 7 away from the steel ball 6 to fix the spring 7; the locking screw 8 passes through the hollow shell 3 and the locking pin 9 to fix the locking pin 9 in the hollow shell 3.

[0044] Among them, in actual application, the positioning assembly also includes a locking pin 9 and a set screw 8. The locking pin 9 is set along the direction of the spring 7 stretching, and contacts with the end of the spring 7 away from the steel ball 6, and is used to fix the spring 7 to prevent the spring 7 from elastically deforming and directly applying pressure to the hollow shell 3, causing the hollow shell 3 to be easily worn. The locking pin 9 is cylindrical, and the cross-sectional area of ​​the cylinder is equal to the cross-sectional area of ​​the spring 7, or slightly larger than the cross-sectional area of ​​the spring 7, so that the locking pin 9 just fixes one end of the spring 7. When the spring 7 is deformed, it can not only limit the axial deformation of the spring 7 to ensure the effective compression of the spring 7, but also cooperate with the hollow shell 3 to limit the deformation of the spring 7 in the radial direction to ensure the stability of the deformation of the spring 7. The set screw 8 passes through the hollow shell 3 and the locking pin 9, and fixes the locking pin 9 in the hollow shell 3. When disassembling, it only needs to remove the set screw 8 with a screwdriver or other tools. The structure is simple and the disassembly and assembly are very convenient.

[0045] Furthermore, the positioning components and the rotating pins 4 are arranged alternately.

[0046] Among them, in actual application, since the locking member 5 rotates around the rotating pin 4, when the locking member 5 rotates, the part where the rotating pin 4 is located will not be displaced, and the positioning component located on one side cannot be squeezed. Therefore, the positioning component and the rotating pin 4 can be staggered. When the locking member 5 compresses the positioning component, the spring 7 in the positioning component contracts. When the spring 7 has a tendency to stretch toward the positioning component, a force is applied to the locking member 5 through the steel ball 6. The steel ball 6 conflicts with the locking member 5 to limit the displacement of the locking member 5.

[0047] Furthermore, a circular arc groove 54 matching the outer surface of the steel ball 6 is provided on the locking member 5 at the position in contact with the steel ball 6 .

[0048] Among them, in actual application, in order to ensure that the steel ball 6 can better resist the locking member 5, an arc groove 54 matching the outer surface of the steel ball 6 is provided on the locking member 5. The steel ball 6 is sunk into the arc groove 54 and can rotate in the arc groove 54, so that the connection structure between the steel ball 6 and the locking member 5 is more stable.

[0049] Furthermore, two arc grooves 54 are arranged side by side.

[0050] In practical applications, please refer to Figure 4 There are two arc grooves 54 arranged side by side, and are respectively located on the upper and lower sides of the rotating pin 4, wherein the upper side actually refers to the side of the rotating pin 4 pointing to the locking end 51, and the lower side actually refers to the side of the rotating pin 4 pointing to the movable end 52. When the movable end 52 is manually moved to make the locking end 51 move away from the gear 11 to unlock, the steel ball 6 rotates from the lower arc groove 54 to the upper arc groove 54 to limit the locking member 5; when the movable end 52 is manually moved to make the locking end 51 close to the gear 11 to lock, the steel ball 6 rotates from the upper arc groove 54 to the lower arc groove 54 to limit the locking member 5. In this way, when the locking member 5 is moved to the correct position, the steel ball 6 will be completely immersed in the corresponding arc groove 54. At this time, the opposite sides of the locking member 5 will respectively contact the hollow shell 3. At the same time, the steel ball 6 limits the displacement in the rotation direction. In the absence of external force, the locking member 5 can maintain the locked or unlocked state of the gear 11 for a long time, which is very convenient to use.

[0051] Furthermore, the locking end 51 is provided with a tooth piece 55 protruding from the surface of the locking member 5 , and the tooth piece 55 is meshed with the gear 11 .

[0052] In actual application, in order to better lock the gear 11, the locking end 51 is provided with a tooth plate 55 protruding from the surface of the locking member 5, and the tooth plate 55 extends toward the gear 11. When the locking end 51 is close to the gear 11 and rotates to the corresponding position, the tooth plate 55 can engage between the gears 11, so that the gear 11 cannot rotate, thereby locking the gear 11.

[0053] Furthermore, the movable end 52 is provided with a rotating dial 53 , which is a cylinder, and the arc surface of the rotating dial 53 faces the outside of the hollow shell 3 .

[0054] Among them, in actual application, the movable end 52 is provided with a rotating dial 53, and the rotating dial 53 is set as a cylinder. The surface arc of the cylinder can better fit the fingertips of people. When in use, there will be no sharp protrusions to cause damage to human hands.

[0055] Furthermore, the rotating dial 53 is provided with anti-slip grooves 531 to facilitate the rotating dial 53 to be turned by fingers.

[0056] In actual application, in order to better move the movable end 52, the rotating dial 53 is provided with anti-slip grooves 531 to prevent fingers from slipping and affecting the user experience.

[0057] In the second aspect, a planing handle is provided, the planing handle includes the above-mentioned manual dial 2 and the locking mechanism for rotating the gear 11, the planing handle includes a hollow shell 3, on which are provided a manual dial 2 that rotates radially around the hollow shell 3, a gear 11 that rotates axially around the hollow shell 3, and a locking mounting portion that is arranged opposite to the manual dial 2, the locking mounting portion is provided with a mounting through hole 31 that is connected to the gear 11, and an inclined opening 32 is provided on the side of the mounting through hole 31 close to the outside, and the inclined opening 32 is used to accommodate the locking mechanism so that the locking mechanism can rotate in the inclined opening 32.

[0058] Among them, in actual application, a planing handle includes any of the above-mentioned manual dials 2 and a locking mechanism for rotating the gear 11. The planing handle includes a hollow shell 3, on which a manual dial 2 that rotates radially around the hollow shell, a gear 11 that rotates axially around the hollow shell 3, and a locking mounting portion that is arranged opposite to the manual dial 2 are arranged. The locking mounting portion is used to install the locking mechanism. Therefore, the locking mechanism is arranged opposite to the manual dial 2. When a person holds the planing handle, the thumb is close to the manual dial 2, and the other four fingers naturally contact the locking mechanism, which is very convenient to use. In order to better install the locking mechanism, the locking mounting portion is provided with a mounting through hole 31 connected to the gear 11, and the locking mechanism is arranged in the through hole. In order to facilitate the rotation of the locking member 5, an inclined opening 32 is provided on the side of the mounting through hole 31 close to the outside, so that the locking end 51 can rotate in the inclined opening 32.

[0059] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A locking mechanism for the rotation of a manual dial and a gear, the locking mechanism being applied to a planing handle, the planing handle comprising a hollow shell (3), and a manual dial (2) arranged on the hollow shell (3) and rotating radially around the hollow shell (3) and a gear (11) rotating axially around the hollow shell (3), the gear (11) being meshed with the manual dial (2), and the gear (11) being driven to rotate by turning the manual dial (2), characterized in that: The locking mechanism comprises a locking member (5) and a rotating pin (4); The rotating pin (4) passes through the hollow shell (3) and the locking member (5), and the locking member (5) is rotatably connected to the hollow shell (3); The locking member (5) comprises a locking end (51) meshed with the gear (11), and a movable end (52) extending toward the outside of the hollow shell (3); the movable end (52) is moved with the rotating pin (4) as a rotating shaft, thereby driving the locking end (51) to rotate, so that the locking end (51) approaches or moves away from the gear (11), thereby locking or unlocking the gear (11).

2. A manual dial and gear rotation locking mechanism according to claim 1, characterized in that: The locking mechanism further comprises a positioning component, which is arranged on a side of the locking member (5) away from the gear (11), and comprises a spring (7) and a steel ball (6); one end of the spring (7) is fixed to the hollow shell (3), and the other end is connected to the steel ball (6); the steel ball (6) is rotatably arranged between the spring (7) and the locking member (5), contacts the locking member (5), positions the locking member (5), and limits the displacement of the locking member (5).

3. A manual dial and gear rotation locking mechanism according to claim 2, characterized in that: The positioning assembly also includes a locking pin (9) and a set screw (8); the locking pin (9) is arranged along the stretching direction of the spring (7) and contacts the end of the spring (7) away from the steel ball (6) to fix the spring (7); the set screw (8) passes through the hollow shell (3) and the locking pin (9) to fix the locking pin (9) in the hollow shell (3).

4. A manual dial and gear rotation locking mechanism according to claim 3, characterized in that: The positioning components and the rotating pins (4) are arranged alternately.

5. A manual dial and gear rotation locking mechanism according to claim 4, characterized in that: A circular arc groove (54) matching the outer surface of the steel ball (6) is provided at a position on the locking member (5) that contacts the steel ball (6).

6. A manual dial and gear rotation locking mechanism according to claim 5, characterized in that: Two circular arc grooves (54) are arranged side by side.

7. A manual dial and gear rotation locking mechanism according to claim 1, characterized in that: The locking end (51) is provided with a tooth piece (55) protruding from the surface of the locking member (5), and the tooth piece (55) is meshed with the gear (11).

8. A manual dial and gear rotation locking mechanism according to claim 7, characterized in that: The movable end (52) is provided with a rotating dial (53), the rotating dial (53) is a cylinder, and the arc surface of the rotating dial (53) faces the outside of the hollow shell (3).

9. A manual dial and gear rotation locking mechanism according to claim 8, characterized in that: The rotating dial (53) is provided with anti-slip grooves (531) to facilitate the rotating dial (53) to be moved by a person's fingers.

10. A planing handle, characterized in that: The planing handle comprises a manual dial and a locking mechanism for gear rotation according to any one of claims 1 to 9, the planing handle comprising a hollow shell (3), the hollow shell (3) being provided with a manual dial (2) that rotates radially around the hollow shell (3), a gear (11) that rotates axially around the hollow shell (3), and a locking mounting portion that is arranged opposite to the manual dial (2), the locking mounting portion being provided with a mounting through hole (31) that is connected to the gear (11), the mounting through hole (31) being provided with an inclined opening (32) on a side close to the outside, the inclined opening (32) being used to accommodate the locking mechanism so as to facilitate the locking mechanism to rotate in the inclined opening (32).

Images