Milling handle and milling device for preventing milling cutter from moving

Abstract

The utility model relates to a milling handle and a milling device for preventing a milling cutter from moving. After the milling cutter is connected to a transmission sleeve, a locking assembly is used to lock the milling cutter and the transmission sleeve, so that the milling cutter can be stably and reliably locked and assembled, effectively restraining the axial movement of the milling cutter and ensuring that the milling cutter works stably and reliably. When the milling cutter needs to be replaced, the milling cutter and the transmission sleeve only need to be loosened by the locking assembly, so that the milling cutter and the transmission sleeve can be separated and replaced, and the replacement efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a milling handle and a milling device for preventing a milling cutter from moving. Background Art

[0002] During surgical procedures, a milling device is usually used to mill bone tissues such as skull caps and vertebral plates. The milling device includes a milling cutter assembly and a milling handle. The milling cutter assembly is mounted on the milling handle, and the milling handle drives the milling cutter to rotate at high speed to achieve milling of bone tissues. The milling cutter assembly generally includes a milling cutter and a boot body that is mounted on the milling cutter.

[0003] In order to ensure that the milling cutter can work stably and reliably, the milling cutter cannot move axially. The traditional milling handle uses the shoe body to limit the axial position of the milling cutter, which cannot effectively restrain the axial movement of the milling cutter, and thus cannot effectively ensure that the milling cutter can work stably and reliably. Utility Model Content

[0004] Based on this, it is necessary to provide a milling handle and a milling device that can prevent the milling cutter from moving in order to solve the problem that the milling cutter cannot effectively ensure stable and reliable operation.

[0005] The technical solution is as follows:

[0006] On the one hand, a milling handle for preventing a milling cutter from moving is provided, comprising:

[0007] A handle body, wherein the handle body has an assembly cavity;

[0008] A transmission sleeve, which is rotatably disposed in the assembly cavity and is drivingly connected to the milling cutter; and

[0009] A locking assembly is configured to lock or release the milling cutter and the transmission sleeve.

[0010] The technical solution is further described below:

[0011] In one of the embodiments, the transmission sleeve is provided with a transmission cavity for inserting the milling cutter, and a locking through hole is provided on the side wall of the transmission sleeve, and the locking through hole is connected to the transmission cavity; the locking assembly includes a locking piece, and the locking piece is arranged corresponding to the locking through hole, and the locking piece can reciprocate axially along the locking through hole relative to the transmission sleeve to realize locking or loosening of the milling cutter and the transmission sleeve.

[0012] In one embodiment, the locking assembly further comprises:

[0013] A locking sleeve, which is sleeved on the outer side wall of the handle body and is movably connected to the handle body, so that the locking sleeve can reciprocate between a locking position and a releasing position along the axial direction of the milling cutter relative to the handle body; and

[0014] A linkage module, which is arranged on the outer peripheral side of the transmission sleeve and is in transmission cooperation with the locking sleeve;

[0015] Wherein, when the locking sleeve is in the locking position, the linkage module and the locking piece cooperate with each other with force so that the locking piece partially protrudes into the transmission cavity to lock the milling cutter and the transmission sleeve; when the locking sleeve is in the loosening position, the linkage module and the locking piece cooperate without force so that the locking piece partially protrudes to the outer wall of the transmission sleeve to loosen the milling cutter and the transmission sleeve.

[0016] In one embodiment, the handle body is provided with a guide groove extending along the axial direction of the milling cutter, and the linkage module comprises:

[0017] A movable sleeve, wherein the movable sleeve is movably disposed between the handle body and the transmission sleeve, and the movable sleeve includes a first sleeve body having a first inner diameter and a second sleeve body having a second inner diameter, and the first inner diameter is smaller than the second inner diameter; and

[0018] A linkage member, wherein the linkage member is movably disposed in the guide slot, and the linkage member partially protrudes from the guide slot until it contacts and cooperates with the lock sleeve, and the linkage member partially protrudes from the guide slot until it contacts and cooperates with the movable sleeve;

[0019] Wherein, when the locking sleeve is in the locking position, the movable sleeve is moved under the drive of the linkage member so that the first sleeve body and the locking member are force-coordinated so that the locking member partially protrudes into the transmission cavity to lock the milling cutter and the transmission sleeve; when the locking sleeve is in the releasing position, the movable sleeve is moved under the drive of the linkage member so that the second sleeve body and the locking member are correspondingly arranged so that the locking member partially protrudes to the outer wall of the transmission sleeve to release the milling cutter and the transmission sleeve.

[0020] In one embodiment, the linkage module also includes a first elastic return member, which is arranged between the locking sleeve and the handle body, and the first elastic return member is configured to apply a force along the axial direction of the milling cutter and toward the locking position to the linkage member when the locking sleeve is in the released position; and / or the linkage module also includes a second elastic return member, which is arranged between the movable sleeve and the transmission sleeve, and the second elastic return member is configured to apply a force along the axial direction of the milling cutter and toward the locking position to the movable sleeve when the locking sleeve is in the released position.

[0021] In one embodiment, the outer wall of the transmission sleeve is provided with a first limiting portion, and when the first sleeve body and the locking member are force-coordinated, the movable sleeve and the first limiting portion are limitedly cooperated; when the second sleeve body and the locking member are correspondingly arranged, the movable sleeve and the first limiting portion are spaced apart along the axial direction of the milling cutter.

[0022] In one of the embodiments, the length between the locking position and the releasing position matches the extension length of the guide slot.

[0023] In one embodiment, the outer side wall of the handle body is provided with a second limiting portion, and when the locking sleeve is in a locked position, the locking sleeve and the second limiting portion are limitedly cooperated; when the locking sleeve is in a released position, the locking sleeve and the second limiting portion are spaced apart along the axial direction of the milling cutter.

[0024] In one of the embodiments, the milling cutter is provided with a slot corresponding to and connected to the locking through hole, and the locking member can be engaged with the slot.

[0025] On the other hand, a milling device is provided, including a milling cutter and a milling handle for preventing the milling cutter from moving, wherein the milling cutter is in transmission connection with the transmission sleeve, and the milling cutter can be locked or released with the transmission sleeve under the action of the locking assembly.

[0026] The milling handle and milling device for preventing the milling cutter from moving in the above-mentioned embodiment, after the milling cutter and the transmission sleeve are connected by transmission, the milling cutter and the transmission sleeve are locked by using a locking assembly, which can realize stable and reliable locking and assembly of the milling cutter, effectively restrain the axial movement of the milling cutter, and ensure that the milling cutter works stably and reliably. When the milling cutter needs to be replaced, the milling cutter and the transmission sleeve only need to be loosened by using the locking assembly, and the milling cutter and the transmission sleeve can be separated and replaced, and the replacement efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 An exploded view of a milling handle according to an embodiment;

[0030] Figure 2 for Figure 1 A schematic diagram of the structure of the milling handle with the locking sleeve of the handle structure in the locked position;

[0031] Figure 3 for Figure 1 A partial enlarged view of part A of the milling handle;

[0032] Figure 4 for Figure 1 A schematic diagram of the structure of the milling handle with the locking sleeve of the handle structure in a released position;

[0033] Figure 5 for Figure 1 A partial enlarged view of part B of the milling handle.

[0034] Description of reference numerals:

[0035] 10. Milling device; 100. Milling handle; 110. Handle body; 111. Assembly cavity; 112. Guide groove; 113. Second limiting portion; 120. Transmission sleeve; 121. Transmission cavity; 122. Locking through hole; 123. First limiting portion; 130. Locking sleeve; 140. Locking member; 150. Moving sleeve; 151. First sleeve body; 152. Second sleeve body; 160. Linkage member; 170. First elastic reset member; 180. Second elastic reset member; 200. Milling cutter; 210. Tool tip; 220. Slot; 300. Boot body. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0037] like Figures 1 to 5 As shown, in one embodiment, a milling device 10 is provided, comprising a milling cutter 200 and a milling handle 100 for preventing the milling cutter from moving. The milling cutter 200 is connected to the milling handle 100 by transmission, so that the milling handle 100 for preventing the milling cutter from moving drives the milling cutter 200 to rotate around its own axial direction to mill bone tissue. In addition, the milling handle 100 for preventing the milling cutter from moving can realize stable and reliable locking assembly of the milling cutter 200, effectively restrain the milling cutter 200 from axial movement, and ensure that the milling cutter 200 works stably and reliably.

[0038] It should be noted that the milling handle 100 that prevents the milling cutter from moving drives the milling cutter 200 to rotate around the axial direction of the milling cutter 200, which can be driven by a rotating drive member such as a motor, which is a prior art and will not be described in detail here. In addition, one end of the milling cutter 200 having the tip 210 and the blade can be rotatably assembled and connected with the boot body 300, which is a prior art and will not be described in detail here.

[0039] like Figure 1 , Figure 3 and Figure 5 As shown, in one embodiment, a milling handle 100 for preventing a milling cutter from moving is provided, comprising a handle body 110, a transmission sleeve 120 and a locking assembly.

[0040] like Figure 1 , Figure 3 and Figure 5 As shown, the handle body 110 can be used for the operator to hold during use, and the handle body 110 has an assembly cavity 111.

[0041] like Figure 3 and Figure 5 As shown, the transmission sleeve 120 is rotatably disposed in the assembly cavity 111, that is, the transmission sleeve 120 can rotate around its own axial direction relative to the handle body 110. Optionally, the transmission sleeve 120 can be in the form of a transmission shaft of a motor. The transmission sleeve 120 is transmission-connected to the milling cutter 200 to drive the milling cutter 200 to rotate around its own axial direction to mill the bone tissue.

[0042] In one embodiment, the transmission sleeve 120 is provided with a transmission cavity 121 , and the milling cutter 200 is inserted into the transmission cavity 121 . Specifically, an end of the milling cutter 200 opposite to the tool tip 210 is inserted into the transmission cavity 121 .

[0043] The locking assembly is configured to lock or release the milling cutter 200 and the transmission sleeve 120 .

[0044] The handle structure 100 of the above embodiment, after the milling cutter 200 is connected to the transmission sleeve 120 by transmission, uses the locking assembly to lock the milling cutter 200 and the transmission sleeve 120, which can realize stable and reliable locking assembly of the milling cutter 200, effectively restrain the axial movement of the milling cutter 200, and ensure that the milling cutter 200 works stably and reliably. When the milling cutter 200 needs to be replaced, it only needs to use the locking assembly to loosen the milling cutter 200 and the transmission sleeve 120, and the milling cutter 200 and the transmission sleeve 120 can be separated and replaced, and the replacement efficiency is high.

[0045] like Figure 3 and Figure 5 As shown, in one embodiment, the transmission sleeve 120 is provided with a transmission cavity 121 for inserting the milling cutter 200, and a locking through hole 122 is provided on the side wall of the transmission sleeve 120, and the locking through hole 122 is connected to the transmission cavity 121. Specifically, the locking through hole 122 radially extends from the outer wall of the transmission sleeve 120 to be connected to the transmission cavity 121. After the milling cutter 200 is inserted into the transmission cavity 121, the locking assembly is used to lock the milling cutter 200 and the transmission sleeve 120, so that the milling cutter 200 can be stably and reliably locked and assembled, and the axial movement of the milling cutter 200 is effectively restrained, so as to ensure that the milling cutter 200 works stably and reliably. When the milling cutter 200 needs to be replaced, it is only necessary to loosen the milling cutter 200 and the transmission sleeve 120 by using the locking assembly, and the milling cutter 200 can be pulled out of the transmission cavity 121 for replacement, and the replacement efficiency is high. In addition, the locking assembly includes a locking member 140. As shown Figure 1 , Figure 3 and Figure 5 As shown, the locking member 140 is arranged corresponding to the locking through hole 122, and the locking member 140 can be relative to the transmission sleeve 120 along the axial direction of the locking through hole 122 (such as Figure 2 and Figure 4 The locking member 140 can reciprocate relative to the transmission sleeve 120 along the radial direction of the transmission sleeve 120 to lock or release the milling cutter 200 and the transmission sleeve 120.

[0046] Specifically, the locking member 140 is configured to partially protrude into the transmission cavity 121 to lock the milling cutter 200 with the transmission sleeve 120, or to partially protrude to the outer wall of the transmission sleeve 120 to release the milling cutter 200 from the transmission sleeve 120. In this way, the locking member 140 is used to reciprocate along the radial direction of the transmission sleeve 120 to achieve the locking or release of the milling cutter 200 and the transmission sleeve 120, which not only effectively restricts the axial movement of the milling cutter 200 and ensures that the milling cutter 200 works stably and reliably, but also the milling cutter 200 can be pulled out of the transmission cavity 121 for replacement, and the replacement efficiency is high.

[0047] Optionally, the locking member 140 may be in the form of a locking ball, a locking pin, or the like.

[0048] like Figure 3 and Figure 5 As shown, further, the locking assembly also includes a locking sleeve 130 and a linkage module.

[0049] The locking sleeve 130 is sleeved on the outer wall of the handle body 110 and is movably connected to the handle body 110 . Specifically, the locking sleeve 130 is connected to the handle body 110 and can reciprocate between a locked position and a released position along the axial direction of the milling cutter 200 relative to the handle body 110 .

[0050] In one embodiment, the lock sleeve 130 is threadedly connected to the handle body 110, and the lock sleeve 130 is rotated relative to the handle body 110 to reciprocate between the locked position and the released position. Of course, in other embodiments, the lock sleeve 130 can also be slidably matched with the handle body 110, and the lock sleeve 130 is slid relative to the handle body 110 to reciprocate between the locked position and the released position.

[0051] The linkage module is disposed on the outer peripheral side of the transmission sleeve 120 , and the linkage module cooperates with the locking sleeve 130 , so that when the locking sleeve 130 reciprocates between the locking position and the releasing position relative to the handle body 110 , the linkage module can be driven to move synchronously.

[0052] like Figure 3 As shown, specifically, when the locking sleeve 130 is in the locking position, the linkage module and the locking member 140 cooperate with each other by applying force, so that the locking member 140 moves axially along the locking through hole 122 until it partially protrudes into the transmission cavity 121, thereby locking the milling cutter 200 and the transmission sleeve 120, and then stably and reliably locking the milling cutter 200 and the transmission sleeve 120 as a whole, avoiding axial movement of the milling cutter 200 relative to the transmission sleeve 120, so that the transmission sleeve 120 can drive the milling cutter 200 to rotate synchronously, thereby ensuring that the milling cutter 200 works stably and reliably.

[0053] It should be noted that the force applied by the linkage module and the locking member 140 refers to the mutual force between the linkage module and the locking member 140. Specifically, the linkage module applies a force along the axial direction of the locking through hole 122 and toward the transmission cavity 121 to the locking member 140, so that the locking member 140 partially protrudes into the transmission cavity 121, thereby locking the milling cutter 200 and the transmission sleeve 120, and then stably and reliably locking the milling cutter 200 and the transmission sleeve 120 as a whole, avoiding the axial movement of the milling cutter 200 relative to the transmission sleeve 120, so that the transmission sleeve 120 can drive the milling cutter 200 to rotate synchronously, and ensure that the milling cutter 200 works stably and reliably.

[0054] like Figure 5 As shown, specifically, when the locking sleeve 130 is in the released position, the linkage module and the locking member 140 are not engaged with each other by force, so that the locking member 140 moves axially along the locking through hole 122 to partially protrude from the outer wall of the transmission sleeve 120, thereby releasing the milling cutter 200 from the transmission sleeve 120, and then the milling cutter 200 can be pulled out of the transmission cavity 121 for replacement.

[0055] It should be noted that the linkage module and the locking member 140 have no force cooperation, which means that there is no interaction force between the linkage module and the locking member 140. Specifically, the linkage module is spaced apart from the locking member 140 along the axial direction of the locking through hole 122, so that the locking member 140 partially protrudes to the outer wall of the transmission sleeve 120, thereby loosening the milling cutter 200 from the transmission sleeve 120, and then the milling cutter 200 can be pulled out of the transmission cavity 121 for replacement.

[0056] like Figure 3 and Figure 5 As shown, in one embodiment, the handle body 110 is provided with a guide slot 112 extending along the axial direction of the milling cutter 200 , that is, the guide slot 112 is communicated with the assembly cavity 111 . In addition, the linkage module includes a moving sleeve 150 and a linkage member 160 .

[0057] like Figure 1 , Figure 3 and Figure 5 As shown, the movable sleeve 150 is movably disposed between the handle body 110 and the transmission sleeve 120, that is, the movable sleeve 150 can reciprocate relative to the handle body 110 along the axial direction of the milling cutter 200. In addition, the movable sleeve 150 is provided with a first sleeve body 151 having a first inner diameter and a second sleeve body 152 having a second inner diameter, and the first inner diameter is smaller than the second inner diameter.

[0058] like Figure 3 and Figure 5As shown, the linkage member 160 is movably disposed in the guide slot 112, that is, the linkage member 160 can reciprocate relative to the handle body 110 along the extension direction of the guide slot 112. In addition, the linkage member 160 partially protrudes from the guide slot 112 to abut against the lock sleeve 130, and the linkage member 160 partially protrudes from the guide slot 112 to abut against the movable sleeve 150. In this way, when the lock sleeve 130 moves relative to the handle body 110 along the axial direction of the milling cutter 200, it can drive the linkage member 160 to reciprocate along the extension direction of the guide slot 112, and then the linkage member 160 drives the movable sleeve 150 to reciprocate along the axial direction of the milling cutter 200.

[0059] It should be noted that the locking sleeve 130 drives the linkage member 160 to reciprocate along the extension direction of the guide slot 112, either directly or indirectly with an intermediate element. Similarly, the linkage member 160 drives the movable sleeve 150 to reciprocate along the axial direction of the milling cutter 200, either directly or indirectly with an intermediate element.

[0060] Optionally, the linkage member 160 may be in the form of a ball, a slider, or the like.

[0061] like Figure 3 As shown, specifically, when the locking sleeve 130 is in the locking position, the movable sleeve 150 is moved under the drive of the linkage member 160 to make the first sleeve body 151 and the locking member 140 cooperate with each other, so that the locking member 140 partially protrudes into the transmission cavity 121, and then the milling cutter 200 and the transmission sleeve 120 are locked and cooperated, and then the milling cutter 200 and the transmission sleeve 120 are stably and reliably locked as a whole, avoiding axial movement of the milling cutter 200 relative to the transmission sleeve 120, so that the transmission sleeve 120 can drive the milling cutter 200 to rotate synchronously, ensuring that the milling cutter 200 works stably and reliably.

[0062] More specifically, when the lock sleeve 130 moves relative to the handle body 110 toward the locking position until it reaches the locking position, the linkage member 160 moves along the guide slot 112 toward the locking position, and then the linkage member 160 drives the movable sleeve 150 to move along the axial direction of the milling cutter 200 toward the locking position, and then the first sleeve 151 moves to the corresponding position along the axial direction of the milling cutter 200 with the locking member 140. Since the inner diameter of the first sleeve 151 is small, the first sleeve 151 and the lock The stopper 140 interferes and applies a resistance force to the locking member 140 along the axial direction of the locking through hole 122 and toward the transmission cavity 121, so that the locking member 140 partially protrudes into the transmission cavity 121, thereby locking the milling cutter 200 and the transmission sleeve 120, and then stably and reliably locking the milling cutter 200 and the transmission sleeve 120 as a whole, avoiding axial movement of the milling cutter 200 relative to the transmission sleeve 120, so that the transmission sleeve 120 can drive the milling cutter 200 to rotate synchronously, thereby ensuring that the milling cutter 200 works stably and reliably.

[0063] like Figure 5 As shown, specifically, when the locking sleeve 130 is in the released position, the movable sleeve 150 is moved under the drive of the linkage member 160 to make the second sleeve body 152 and the locking member 140 correspond to each other, that is, the second sleeve body 152 and the locking member 140 correspond to each other in the axial direction of the milling cutter 200, so that the locking member 140 partially protrudes to the outer wall of the transmission sleeve 120, thereby loosening the milling cutter 200 and the transmission sleeve 120, and then the milling cutter 200 can be pulled out of the transmission cavity 121 for replacement.

[0064] More specifically, when the locking sleeve 130 moves toward the released position relative to the handle body 110 until it reaches the released position, the linkage member 160 moves along the guide groove 112 toward the released position, and then the movable sleeve 150 is driven by the linkage member 160 to move along the axial direction of the milling cutter 200 toward the released position, and then the second sleeve 152 and the locking member 140 are correspondingly arranged along the axial direction of the milling cutter 200. Since the inner diameter of the second sleeve 152 is larger, there is no interaction force between the second sleeve 152 and the locking member 140, so that the locking member 140 partially protrudes to the outer wall of the transmission sleeve 120, thereby loosening the milling cutter 200 and the transmission sleeve 120, and then the milling cutter 200 can be pulled out of the transmission cavity 121 for replacement.

[0065] like Figure 1 , Figure 3 and Figure 5As shown, in one embodiment, the linkage module further includes a first elastic reset member 170. The first elastic reset member 170 is disposed between the lock sleeve 130 and the handle body 110. Optionally, the first elastic reset member 170 is sleeved on the outer side wall of the handle body 110, one end of the first elastic reset member 170 is connected to the outer side wall of the handle body 110, and the other end of the first elastic reset member 170 is connected to the linkage member 160. Furthermore, the first elastic reset member 170 is configured to apply a force along the axial direction of the milling cutter 200 and toward the locking position to the linkage member 160 when the locking sleeve 130 is in the released position. In this way, when the locking sleeve 130 moves from the released position to the locked position, the linkage member 160 can move along the guide groove 112 toward the locking position under the force of the first elastic reset member 170, and then the movable sleeve 150 is driven by the linkage member 160 to move along the axial direction of the milling cutter 200 toward the locking position, and then the first sleeve body 151 moves to the locking member 140 along the milling cutter 200. The axial direction of the cutter 200 is correspondingly arranged. Since the inner diameter of the first sleeve 151 is relatively small, the first sleeve 151 conflicts with the locking member 140 and applies a resistance force to the locking member 140 along the axial direction of the locking through hole 122 and toward the transmission cavity 121, so that the locking member 140 partially protrudes into the transmission cavity 121, thereby locking the milling cutter 200 and the transmission sleeve 120, and then stably and reliably locking the milling cutter 200 and the transmission sleeve 120 as a whole, avoiding axial movement of the milling cutter 200 relative to the transmission sleeve 120, so that the transmission sleeve 120 can drive the milling cutter 200 to rotate synchronously. Correspondingly, when the locking sleeve 130 moves from the locked position toward the released position, the locking sleeve 130 causes the linkage member 160 to move along the guide groove 112 toward the released position, so that the linkage member 160 applies a force to the first elastic return member 170, causing the first elastic return member 170 to deform (for example, compressively deform or tensilely deform), thereby causing the first elastic return member 170 to apply a force along the axial direction of the milling cutter 200 and toward the locked position to the linkage member 160, until the locking sleeve 130 moves to the released position, and the first elastic return member 170 is in an extreme state of deformation.

[0066] The first elastic return member 170 may be a component with an elastic return function, such as a spring.

[0067] like Figure 1 , Figure 3 and Figure 5As shown, in one embodiment, the linkage module further includes a second elastic reset member 180. The second elastic reset member 180 is disposed between the moving sleeve 150 and the transmission sleeve 120. Optionally, the second elastic reset member 180 is sleeved on the outer side wall of the transmission sleeve 120, one end of the second elastic reset member 180 is connected to the outer side wall of the transmission sleeve 120, and the other end of the second elastic reset member 180 is connected to the moving sleeve 150. Furthermore, the second elastic reset member 180 is configured to apply a force along the axial direction of the milling cutter 200 and toward the locking position to the movable sleeve 150 when the locking sleeve 130 is in the released position. In this way, when the locking sleeve 130 moves from the released position to the locked position, the linkage member 160 moves along the guide slot 112 toward the locking position, and then the movable sleeve 150 moves along the axial direction of the milling cutter 200 toward the locking position under the action of the second elastic reset member 180, and then the first sleeve body 151 moves to the axial direction of the milling cutter 200 with the locking member 140. Correspondingly, since the inner diameter of the first sleeve 151 is smaller, the first sleeve 151 contacts the locking member 140 and applies a resistance force along the axial direction of the locking through hole 122 and toward the transmission cavity 121 to the locking member 140, so that the locking member 140 partially protrudes into the transmission cavity 121, thereby locking the milling cutter 200 and the transmission sleeve 120, and then stably and reliably locking the milling cutter 200 and the transmission sleeve 120 as a whole, avoiding axial movement of the milling cutter 200 relative to the transmission sleeve 120, so that the transmission sleeve 120 can drive the milling cutter 200 to rotate synchronously. Correspondingly, when the locking sleeve 130 moves from the locked position toward the released position, the locking sleeve 130 causes the linkage member 160 to move along the guide groove 112 toward the released position, so that the linkage member 160 drives the movable sleeve 150 to move along the axial direction of the milling cutter 200 toward the released position, thereby causing the movable sleeve 150 to apply a force to the second elastic return member 180, causing the second elastic return member 180 to deform (for example, compressively deform or tensilely deform), thereby causing the second elastic return member 180 to apply a force along the axial direction of the milling cutter 200 and toward the locked position to the movable sleeve 150, until the locking sleeve 130 moves to the released position, and the second elastic return member 180 is in an extreme state of deformation.

[0068] The second elastic return member 180 may be a component with an elastic return function, such as a spring.

[0069] In one embodiment, the length between the locked position and the released position matches the extended length of the guide slot 112. In this way, the moving distance of the linkage member 160 relative to the handle body 110 matches the moving distance of the lock sleeve 130 relative to the handle body 110, ensuring the accuracy of the axial movement of the movable sleeve 150 relative to the handle body 110 along the milling cutter 200, thereby ensuring that the movable sleeve 150 accurately moves to the point where the first sleeve 151 and the locking member 140 are force-matched or moves to the point where the second sleeve 152 and the locking member 140 are correspondingly arranged, thereby ensuring that the milling cutter 200 is accurately locked or released.

[0070] like Figure 3 and Figure 5 As shown, in addition, the outer wall of the transmission sleeve 120 is provided with a first limiting portion 123. Among them, when the first sleeve body 151 and the locking member 140 are force-matched, the movable sleeve 150 and the first limiting portion 123 are limited and matched; when the second sleeve body 152 and the locking member 140 are correspondingly arranged, the movable sleeve 150 and the first limiting portion 123 are spaced along the axial direction of the milling cutter 200. In this way, the movable sleeve 150 is limited by the first limiting portion 123, and the axial movement of the movable sleeve 150 relative to the handle body 110 along the milling cutter 200 can be limited, ensuring that the movable sleeve 150 moves more accurately, and then ensuring that the movable sleeve 150 moves accurately to make the first sleeve body 151 and the locking member 140 force-matched or move to make the second sleeve body 152 and the locking member 140 correspondingly arranged, and then ensuring that the milling cutter 200 is accurately locked or released.

[0071] The first limiting portion 123 may be in the form of a limiting clamp ring or a limiting retaining ring.

[0072] like Figure 3 and Figure 5 As shown, in addition, the outer side wall of the handle body 110 is provided with a second limiting portion 113. When the lock sleeve 130 is in the locked position, the lock sleeve 130 and the second limiting portion 113 are limited and matched; when the lock sleeve 130 is in the released position, the lock sleeve 130 and the second limiting portion 113 are spaced along the axial direction of the milling cutter 200. In this way, the lock sleeve 130 is limited by the second limiting portion 113, and the lock sleeve 130 can be limited relative to the handle body 110 along the axial direction of the milling cutter 200 to prevent the lock sleeve 130 from falling off from the handle body 110, and can also ensure that the movable sleeve 150 moves more accurately, thereby ensuring that the movable sleeve 150 moves accurately to make the first sleeve 151 and the locking member 140 force-matched or moves to make the second sleeve 152 and the locking member 140 correspondingly arranged, and then ensure that the milling cutter 200 is accurately locked or released.

[0073] The second limiting portion 113 may be in the form of a limiting nut or a limiting end cover.

[0074] like Figure 1 and Figure 3 As shown, in one embodiment, the milling cutter 200 is provided with a slot 220 corresponding to and communicating with the locking through hole 122, and the locking member 140 can be engaged with the slot 220. In this way, when the locking member 140 partially protrudes into the transmission cavity 121 and engages with the slot 220, the milling cutter 200 and the transmission sleeve 120 can be locked as a whole more stably and reliably, and the axial movement of the milling cutter 200 can be more effectively avoided. In addition, there is no need to set a contacting part such as a shoulder on the milling cutter 200, which reduces the processing difficulty of the milling cutter 200.

[0075] It should be noted that "some body" or "some part" can be a part of the corresponding "component", that is, "some body" or "some part" can be integrally formed with the "other parts of the component"; it can also be an independent component that can be separated from the "other parts of the component", that is, "some body" or "some part" can be manufactured independently and then combined with the "other parts of the component" into a whole. The expression of the above-mentioned "some body" or "some part" in this application is only one of the embodiments, for the convenience of reading, and not to limit the scope of protection of this application. As long as it contains the above-mentioned features and has the same function, it should be understood as an equivalent technical solution of this application.

[0076] It should be noted that the components included in the "unit", "assembly", "mechanism" and "device" of this application can also be flexibly combined, that is, modular production can be carried out according to actual needs to facilitate modular assembly. The division of the above components in this application is only one of the embodiments, for the convenience of reading, and not to limit the scope of protection of this application. As long as the above components are included and have the same functions, it should be understood that it is an equivalent technical solution of this application.

[0077] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the 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. The term "and / or" used in the present invention includes any and all combinations of one or more related listed items.

[0078] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0079] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0081] It should be noted that when an element is referred to as being "fixed on", "set on", "fixed on" or "installed on" another element, it can be directly on the other element or there can be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a central element at the same time. Further, when an element is considered to be "fixed transmission connected" to another element, the two can be fixed in a detachable connection manner or in a non-detachable connection, as long as power transmission can be achieved, such as socketing, snap-on, one-piece molding fixation, welding, etc., which can be achieved in the prior art and will not be repeated here. When an element is perpendicular or approximately perpendicular to another element, it means that the ideal state of the two is vertical, but due to the influence of manufacturing and assembly, there may be a certain vertical error. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0082] It should also be understood that when explaining the connection relationship or positional relationship of elements, although not explicitly described, the connection relationship and positional relationship are interpreted as including an error range, which should be within the acceptable deviation range of a specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" may mean within one or more standard deviations, which are not limited here.

[0083] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A milling handle for preventing a milling cutter from moving, characterized in that: include: A handle body, wherein the handle body has an assembly cavity; A transmission sleeve, which is rotatably disposed in the assembly cavity and is transmission-connected to the milling cutter; and A locking assembly is configured to lock or release the milling cutter and the transmission sleeve.

2. The milling handle for preventing the milling cutter from moving according to claim 1, characterized in that: The transmission sleeve is provided with a transmission cavity for inserting the milling cutter, and a locking through hole is provided on the side wall of the transmission sleeve, and the locking through hole is communicated with the transmission cavity; the locking assembly includes a locking piece, and the locking piece is arranged corresponding to the locking through hole, and the locking piece can reciprocate axially along the locking through hole relative to the transmission sleeve to realize locking and coupling or loosening of the milling cutter and the transmission sleeve.

3. The milling handle for preventing the milling cutter from moving according to claim 2, characterized in that: The locking assembly also includes: A locking sleeve, which is sleeved on the outer side wall of the handle body and is movably connected to the handle body, so that the locking sleeve can reciprocate between a locking position and a releasing position along the axial direction of the milling cutter relative to the handle body; and A linkage module, which is arranged on the outer peripheral side of the transmission sleeve and is in transmission cooperation with the locking sleeve; Wherein, when the locking sleeve is in the locking position, the linkage module and the locking piece cooperate with each other with force so that the locking piece partially protrudes into the transmission cavity to lock the milling cutter and the transmission sleeve; when the locking sleeve is in the loosening position, the linkage module and the locking piece cooperate without force so that the locking piece partially protrudes to the outer wall of the transmission sleeve to loosen the milling cutter and the transmission sleeve.

4. The milling handle for preventing the milling cutter from moving according to claim 3, characterized in that: The handle body is provided with a guide through groove extending along the axial direction of the milling cutter, and the linkage module comprises: A movable sleeve, wherein the movable sleeve is movably disposed between the handle body and the transmission sleeve, and the movable sleeve includes a first sleeve body having a first inner diameter and a second sleeve body having a second inner diameter, and the first inner diameter is smaller than the second inner diameter; and A linkage member, wherein the linkage member is movably disposed in the guide slot, and the linkage member partially protrudes from the guide slot until it contacts and cooperates with the lock sleeve, and the linkage member partially protrudes from the guide slot until it contacts and cooperates with the movable sleeve; Wherein, when the locking sleeve is in the locking position, the movable sleeve is moved under the drive of the linkage member so that the first sleeve body and the locking member are force-coordinated so that the locking member partially protrudes into the transmission cavity to lock the milling cutter and the transmission sleeve; when the locking sleeve is in the releasing position, the movable sleeve is moved under the drive of the linkage member so that the second sleeve body and the locking member are correspondingly arranged so that the locking member partially protrudes to the outer wall of the transmission sleeve to release the milling cutter and the transmission sleeve.

5. The milling handle for preventing the milling cutter from moving according to claim 4, characterized in that: The linkage module also includes a first elastic return member, which is arranged between the locking sleeve and the handle body, and the first elastic return member is configured to apply a force along the axial direction of the milling cutter and toward the locking position to the linkage member when the locking sleeve is in the released position; and / or the linkage module also includes a second elastic return member, which is arranged between the movable sleeve and the transmission sleeve, and the second elastic return member is configured to apply a force along the axial direction of the milling cutter and toward the locking position to the movable sleeve when the locking sleeve is in the released position.

6. The milling handle for preventing the milling cutter from moving according to claim 4, characterized in that: The outer side wall of the transmission sleeve is provided with a first limiting portion. When the first sleeve body and the locking member are force-coordinated, the movable sleeve and the first limiting portion are limitedly cooperated; when the second sleeve body and the locking member are correspondingly arranged, the movable sleeve and the first limiting portion are spaced apart along the axial direction of the milling cutter.

7. The milling handle for preventing the milling cutter from moving according to claim 4, characterized in that: The length between the locking position and the releasing position matches the extension length of the guide through slot.

8. The milling handle for preventing the milling cutter from moving according to any one of claims 3 to 7, characterized in that: The outer side wall of the handle body is provided with a second limiting portion. When the locking sleeve is in a locked position, the locking sleeve and the second limiting portion are limitedly matched; when the locking sleeve is in a released position, the locking sleeve and the second limiting portion are spaced apart along the axial direction of the milling cutter.

9. The milling handle for preventing the milling cutter from moving according to any one of claims 2 to 7, characterized in that: The milling cutter is provided with a slot corresponding to and communicating with the locking through hole, and the locking member can be engaged with the slot.

10. A milling device, characterized in that: It comprises a milling cutter and a milling handle for preventing the milling cutter from moving as claimed in any one of claims 1 to 9, wherein the milling cutter is in transmission connection with the transmission sleeve, and the milling cutter can be locked or released with the transmission sleeve under the action of the locking assembly.

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