Driving handle of abrasive drilling device and abrasive drilling device

Abstract

The invention discloses a driving handle of an abrasive drilling device and the abrasive drilling device, and relates to the technical field of medical instruments.The driving handle of the abrasive drilling device comprises a first handle assembly and a second handle assembly, the first handle assembly comprises a first shell, a driving motor and a driving gear, and the driving gear is provided with a first end face gear tooth part; the elbow assembly is detachably connected with the first shell, and an assembly channel is formed in the elbow assembly; the driven gear comprises a second end face gear tooth part and a hub part, the hub part is rotatably arranged in the assembling channel, and the second end face gear tooth part is arranged on the hub part and connected with the first end face gear tooth part in an engaged mode; the bearing is arranged outside the hub part in a sleeving manner and is fixed in the assembling channel in the axial direction of the bearing; the adjusting structure is connected with the hub part and the bearing and used for adjusting the axial position of the hub part relative to the bearing so that the second end face gear tooth part can be close to or away from the driving gear. According to the technical scheme, the meshing condition of the driving gear and the driven gear can be adjusted conveniently.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a driving handle of a burr device and the burr device. BACKGROUND

[0002] In modern surgery, burr devices are widely used for grinding, drilling, shaping and resecting of bones or diseased tissues.

[0003] A burr device comprises a driving handle and a connecting handle. The shell of the driving handle is fixedly connected with the shell of the connecting handle. A driving motor and a driving gear on the output shaft of the driving motor are arranged in the shell of the driving handle. A driven gear and a transmission shaft connected with the driven gear are arranged in the shell of the connecting handle. A burr tool is mounted in the connecting handle and connected with the transmission shaft. After the driving handle and the connecting handle are connected, the rotation power of the driving motor is transmitted to the burr tool through the engagement of the driving gear and the driven gear, so that the functions of grinding or drilling are realized.

[0004] In order to ensure the efficient engagement of the driving gear and the driven gear, the engagement gap between the driving gear and the driven gear needs to be adjusted and run multiple times. Therefore, the driving handle and the connecting handle need to be disassembled and assembled multiple times, and the connecting handle itself also needs to be disassembled and assembled multiple times. As a result, the workload of repeated disassembly and assembly is large, and the operation is inconvenient. SUMMARY

[0005] The main purpose of the present application is to provide a driving handle of a burr device and a burr device, which aims to facilitate the adjustment of the engagement of the driving gear and the driven gear.

[0006] To achieve the above-mentioned purpose, the driving handle of the burr device comprises:

[0007] A first handle assembly comprises a first shell, a driving motor arranged in the first shell, and a driving gear connected with the driving motor. The driving gear is provided with a first end face gear portion.

[0008] A bend assembly is detachably connected with the first shell. The bend assembly is provided with an assembly channel.

[0009] A driven gear comprises a second end face gear portion and a hub portion. The hub portion is rotatably arranged in the interior of the assembly channel. The axis of the driving gear and the axis of the driven gear form an included angle. The second end face gear portion is arranged at one end of the hub portion facing the first end face gear portion and is engagedly connected with the first end face gear portion.

[0010] A bearing is sleeved on the outside of the hub portion and is fixed to the interior of the assembly channel along the axial direction of the bearing.

[0011] An adjusting structure is connected between the hub portion and the bearing, and is used to adjust the axial position of the hub portion relative to the bearing so as to move the second end face gear portion closer to or further away from the driving gear.

[0012] In an embodiment, the adjusting structure comprises a cooperating adjusting pad and a limiting groove, the limiting groove is arranged around the outer circumferential wall of the hub portion, the bearing portion is arranged in the limiting groove, the width of the limiting groove is greater than the width of the bearing, the adjusting pad is arranged between the inner wall of the limiting groove and the bearing, and is arranged on the side of the bearing facing the driving gear and / or the side of the bearing away from the driving gear, so that when the thickness or number of the adjusting pad changes, the second end face gear portion moves closer to or further away from the driving gear.

[0013] In an embodiment, the hub portion comprises a first segment and a second segment connected to each other, the second end face gear portion is arranged at the end of the first segment away from the second segment, the outer diameter of the second segment is smaller than the outer diameter of the first segment, and a first step structure is formed at the connection between the first segment and the second segment, the grinding drill device further comprises a limiting member, the limiting member is sleeved on the outside of the second segment and is arranged in a spaced manner with the first step structure, so that the limiting groove is formed between the first step structure and the limiting member.

[0014] In an embodiment, the driving handle further comprises a second limiting structure, the second limiting structure is connected between the elbow assembly and the bearing, and is used to limit the axial movement of the bearing along itself.

[0015] In an embodiment, the second limiting structure comprises a second step structure and a fastener, the inner wall of the assembly channel is provided with the second step structure, the fastener is detachably connected with the elbow assembly, and the fastener and the second step structure are arranged on the opposite sides of the bearing, so as to limit the axial movement of the bearing along itself.

[0016] In an embodiment, the outer circumferential wall of the fastener is threadedly connected with the inner wall of the assembly channel; and / or,

[0017] The end of the fastener away from the bearing is provided with at least two wrench grooves.

[0018] In an embodiment, the driving handle further comprises:

[0019] A support sleeve, one end of the support sleeve is arranged between the driving motor and the first housing, the other end of the support sleeve extends to the inside of the assembly channel and is sleeved on the outside of the driving gear; and

[0020] A wire is led out from a wire leading groove extending along the axial direction of the first housing and is arranged in the assembly channel and on the side of the support sleeve away from the driving gear.

[0021] In an embodiment, the driven gear is provided with a through hole extending through the driven gear along the axial direction of the driven gear.

[0022] The application further provides a drill grinding device matched with a drill grinding tool, comprising:

[0023] The drive handle of the drill grinding device and a connecting handle detachably connected with the drive handle;

[0024] The connecting handle is used for connecting the drive handle and the drill grinding tool, so that the driving motor can drive the drill grinding tool to rotate around the axial direction thereof.

[0025] The application further provides a drill grinding device matched with a drill grinding tool, comprising:

[0026] The drive handle of the drill grinding device and a connecting handle detachably connected with the drive handle;

[0027] The connecting handle comprises a shell assembly detachably connected with the elbow assembly and a transmission shaft arranged in the shell assembly, the transmission shaft is in transmission connection with the driven gear and the drill grinding tool respectively, the through hole is a torque transmission hole, and the transmission shaft is provided with a torque transmission shaft segment extending into the through hole.

[0028] The driving handle of the grinding device in this invention includes a first handle assembly, an elbow assembly, a driven gear, a bearing, and an adjustment structure. The first handle assembly includes a first housing, a drive motor, and a driving gear. The elbow assembly is detachably connected to the first housing. The driving gear is mounted on the output shaft of the drive motor, which drives the driving gear to rotate. The driven gear, bearing, and adjustment structure are disposed within the assembly channel of the elbow assembly. The driven gear includes a second end face tooth portion and a hub portion. The hub portion is rotatably disposed within the assembly channel of the elbow assembly. The bearing is sleeved outside the hub portion and axially fixed within the assembly channel to provide stable support for the driven gear. When the elbow assembly is connected to the first housing, the second end face tooth portion meshes with the first end face tooth portion of the driving gear. The adjustment structure connects the hub portion and the bearing, enabling the hub portion to move axially relative to the bearing, thereby adjusting the gap between the second end face tooth portion and the first end face tooth portion, ensuring precise meshing between the driving gear and the driven gear. On the one hand, the ability to adjust the clearance between the driven and driven gears improves the precision of their meshing, thereby ensuring power transmission efficiency, enhancing transmission stability and reliability, reducing wear on both gears, and extending their service life. On the other hand, the driven gear, bearings, and adjustment structure are mounted on the elbow assembly, which can be assembled separately from the drive assembly. Therefore, once the elbow assembly and drive assembly are assembled, the meshing adjustment of the driven and driven gears can be performed without assembling the entire grinding and drilling device. This reduces the number of parts that need to be disassembled during adjustment, improving the convenience and time required for meshing adjustment. Furthermore, with prolonged use, the drive and driven gears will wear due to meshing, leading to an increased meshing clearance. Adjusting the axial position of the driven gear through the adjustment structure can compensate for this wear, reducing transmission vibration, noise, and power loss caused by excessive clearance, thus extending the service life of the grinding and drilling device. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 A cross-sectional view of a partial structure of an embodiment of the drive handle of the grinding device provided by the present invention. Figure 1 ;

[0031] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0032] Figure 3 Figure 1 is a perspective view of a grinding drill device according to the present application; Figure 1 Figure 2 is a partial enlarged view of the middle B of figure 1;

[0033] Figure 4 Figure 3 is a sectional view of a part of the structure of an embodiment of the driving handle of the grinding drill device according to the present application; Figure 2

[0034] Figure 4 is a sectional view of a part of the structure of an embodiment of the driving handle of the grinding drill device according to the present application; Figure 5 Figure 3 Figure 5 is a structural schematic view of the elbow assembly of the driving handle of the grinding drill device according to the present application;

[0035] Figure 6 Figure 6 is a structural schematic view of the locking sleeve of the elbow assembly of the driving handle of the grinding drill device according to the present application;

[0036] Figure 7 Figure 7 is a structural schematic view of a part of the structure of the driving handle of the grinding drill device according to the present application;

[0037] Figure 8 Figure 8 is a partial sectional view of a part of the structure of the driving handle of the grinding drill device according to the present application;

[0038] Figure 9 Figure 9 is a structural schematic view of the elbow body of the elbow assembly of the driving handle of the grinding drill device according to the present application;

[0039] Figure 10 Figure 10 is a structural schematic view of the fastener of the second limiting structure of the driving handle of the grinding drill device according to the present application;

[0040] Figure 11 Figure 11 is a sectional view of a part of the structure of an embodiment of the grinding drill device according to the present application.

[0041] BRIEF DESCRIPTION OF THE DRAWINGS

[0042] 110, first housing; 1101, positioning groove; 1102, wire outlet slot; 121, driving gear; 1211, first end face tooth portion; 122, driving motor; 130, wire; 140, support sleeve;

[0043] 200, elbow assembly; 201, assembly channel; 202, clamping ring groove; 203, positioning structure; 204, first limiting structure; 210, elbow body; 2101, first wire passing groove; 220, locking sleeve; 2201, positioning protrusion; 2202, second protrusion;

[0044] 300, connecting sleeve; 301, first protrusion;

[0045] ​410, driven gear; 411, hub portion; 4111, through hole; 412, second end face gear portion; 420, bearing; 430, limiting piece;

[0046] 500, adjusting structure; 510, adjusting pad;

[0047] 600, second limiting structure; 610, fastener; 611, wrench groove;

[0048] 700, connecting handle; 710, shell assembly; 720, transmission shaft.

[0049] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0051] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0052] In the present application, unless otherwise explicitly specified and limited, the terms “connection”, “fixing” and the like should be understood in a broad sense. For example, “fixing” can be fixed connection, or detachable connection, or integral; “connection” can be mechanical connection, or electrical connection, can be direct connection, or indirect connection through an intermediate medium, can be internal connection of two elements or interaction relationship between two elements. Unless otherwise explicitly limited, the above terms in the present application can be understood according to the specific meaning in the specific situation by those skilled in the art.

[0053] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0054] This invention proposes a drive handle for a grinding drill device.

[0055] Please see Figure 1 , Figure 3 , Figure 4 as well as Figure 11 , Figure 1 A cross-sectional view of a partial structure of an embodiment of the drive handle of the grinding device provided by the present invention. Figure 1 , Figure 3 for Figure 1 A magnified view of a section at point B. Figure 4 A cross-sectional view of a partial structure of an embodiment of the drive handle of the grinding device provided by the present invention. Figure 2 , Figure 11 This is a cross-sectional view of a partial structure of an embodiment of the grinding and drilling apparatus provided by the present invention.

[0056] In one embodiment of the present invention, the drive handle of the grinding device includes:

[0057] The first handle assembly includes a first housing 110, a drive motor 122 disposed in the first housing 110, and a drive gear 121 connected to the drive motor 122. The drive gear 121 is provided with a first end face tooth portion 1211.

[0058] Elbow assembly 200 is detachably connected to the first housing 110, and the elbow assembly 200 is provided with an assembly channel 201.

[0059] Driven gear 410 includes a second end face gear tooth portion 412 and a hub portion 411. The hub portion 411 is rotatably disposed inside the assembly channel 201. The axis of the driving gear 121 forms an angle with the axis of the driven gear 410. The second end face gear tooth portion 412 is disposed at the end of the hub portion 411 facing the first end face gear tooth portion 1211 and meshes with the first end face gear tooth portion 1211.

[0060] The bearing 420 is sleeved on the outside of the hub portion 411 and fixed to the inside of the assembly channel 201 along the axial direction of the bearing 420; and

[0061] The adjusting structure 500 is connected to the hub portion 411 and the bearing 420, and is used to adjust the axial position of the hub portion 411 relative to the bearing 420 so that the second end face gear portion 412 is close to or away from the driving gear 121.

[0062] The driving handle of the drill device in the technical scheme comprises a first handle assembly, an elbow assembly 200, a driven gear 410, a bearing 420 and an adjusting structure 500, the first handle assembly comprises a first housing 110, a driving motor 122 and a driving gear 121, the elbow assembly 200 is detachably connected with the first housing 110, the driving gear 121 is arranged on an output shaft of the driving motor 122, and the driving motor 122 drives the driving gear 121 to rotate. The driven gear 410, the bearing 420 and the adjusting structure 500 are arranged in an assembly channel 201 of the elbow assembly 200, the driven gear 410 comprises a second end face gear portion 412 and a hub portion 411, the hub portion 411 is rotatably arranged in the assembly channel 201 of the elbow assembly 200, the bearing 420 is sleeved outside the hub portion 411 and fixed in the assembly channel 201 in the axial direction to form stable support for the driven gear 410, and when the elbow assembly 200 is connected with the first housing 110, the second end face gear portion 412 is engaged with a first end face gear portion 1211 on the driving gear 121. The adjusting structure 500 connects the hub portion 411 with the bearing 420 and can drive the hub portion 411 to move axially relative to the bearing 420, so as to adjust the gap between the second end face gear portion 412 and the first end face gear portion 1211 and make the driving gear 121 and the driven gear 410 accurately engaged. On the one hand, the gap between the driven gear 410 and the driving gear 121 can be adjusted, which is beneficial to improve the accuracy of engagement between the two gears, thereby ensuring the efficiency of power transmission, improving the stability and reliability of transmission, reducing the wear of the driving gear 121 and the driven gear 410 and prolonging the service life; on the other hand, the driven gear 410, the bearing 420 and the adjusting structure 500 are arranged on the elbow assembly 200, and the elbow assembly 200 can be assembled separately from the driving assembly, so that the engagement adjustment of the driven gear 410 and the driving gear 121 can be performed as long as the elbow assembly 200 is assembled with the driving assembly, without the need to assemble the entire drill device and then perform the engagement adjustment, so that the number of parts that need to be disassembled during the adjustment process is reduced, the convenience of engagement adjustment of the driven gear 410 and the driving gear 121 is improved, and the time consumed for the engagement adjustment is shortened. On the other hand, as the drill device is used for a long time, the driving gear 121 and the driven gear 410 will be worn due to engagement, which will cause the engagement gap to increase, the axial position of the driven gear 410 is adjusted by the adjusting structure 500, the gap caused by wear can be compensated, thereby reducing the problems of transmission vibration, noise and power loss caused by too large gap, and prolonging the service life of the drill device.

[0063] In an embodiment, the adjusting structure 500 comprises a cooperating adjusting pad 510 and a limiting groove, the limiting groove is annularly arranged on the outer circumferential wall of the hub portion 411, the bearing 420 is partially arranged in the limiting groove, the width of the limiting groove is greater than the width of the bearing 420, the adjusting pad 510 is arranged between the inner wall of the limiting groove and the bearing 420, and is located on the side of the bearing 420 facing the driving gear 121 and / or the side of the bearing 420 away from the driving gear 121, so that when the thickness or number of the adjusting pad 510 changes, the second end face tooth portion 412 is close to or away from the driving gear 121.

[0064] In combination Figure 1 and Figure 3 In an embodiment of the present application, the adjusting structure 500 comprises an adjusting pad 510 and a limiting groove, the limiting groove is annularly arranged on the outer circumferential wall of the hub portion 411 and is continuously arranged along the circumferential direction of the hub portion 411, the limiting groove provides a containing space for the bearing 420 and the adjusting pad 510, the inner side of the bearing 420 is located in the limiting groove, and the outer side abuts against the inner wall of the assembly channel 201. The width (the dimension along the axial direction of the hub portion 411) of the limiting groove is greater than the width (the dimension along the axial direction of the bearing 420) of the bearing 420, so that there is an axial gap between the bearing 420 and the inner wall of the limiting groove, thereby providing a space for the axial movement of the hub portion 411 relative to the bearing 420. The adjusting pad 510 is arranged in the gap between the limiting groove and the bearing 420 to achieve the axial positioning of the hub portion 411, the adjusting pad 510 can be arranged on the side of the bearing 420 facing the driving gear 121, i.e. between the end face of the bearing 420 close to the driving gear 121 and the inner wall of the corresponding side of the limiting groove; or can be arranged on the side away from the driving gear 121, i.e. between the end face of the bearing 420 away from the driving gear 121 and the inner wall of the corresponding side of the limiting groove; or can be arranged on both sides.

[0065] Specifically, when the second end face tooth portion 412 needs to be close to the driving gear 121, the adjusting pads 510 can be added or thicker adjusting pads 510 can be replaced on the side of the bearing 420 facing the driving gear 121, the adjusting pads 510 will push the inner wall of the limiting groove to move towards the driving gear 121, thereby driving the wheel hub portion 411 and the second end face tooth portion 412 to be close to the driving gear 121; when the second end face tooth portion 412 needs to be away from the driving gear 121, the adjusting pads 510 can be added or thicker adjusting pads 510 can be replaced on the side of the bearing 420 away from the driving gear 121, the adjusting pads 510 will push the inner wall of the limiting groove to move away from the driving gear 121, thereby driving the wheel hub portion 411 and the second end face tooth portion 412 to be away from the driving gear 121. Only the adjusting pads 510 of different thicknesses need to be added or replaced to adjust the axial position of the driven gear 410, which is low in manufacturing cost, low in operation threshold, simple and reliable in adjusting mode, and easy to operate. The adjusting pads 510 can be in the form of gaskets or washers, and the thickness, number and setting position thereof can be adjusted and designed as required to meet the required axial displacement of the wheel hub portion 411.

[0066] In an embodiment, the wheel hub portion 411 includes a first segment and a second segment connected together, the second end face tooth portion 412 is arranged at one end of the first segment away from the second segment, the second segment has an outer diameter smaller than that of the first segment, and a first step structure is formed at the connection between the first segment and the second segment. The grinding drill device further includes a limiting member 430, which is sleeved on the outside of the second segment and is arranged in spaced relation with the first step structure to form a limiting groove between the first step structure and the limiting member 430.

[0067] In combination Figure 1 and Figure 3 In the embodiment of the present application, the wheel hub portion 411 includes a first segment with a larger diameter and a second segment with a smaller diameter, the first segment and the second segment are coaxially connected together, and a first step structure is formed at the connection between the first segment and the second segment due to the smaller outer diameter of the second segment. The grinding drill device further includes a limiting member 430, which can be in the form of a snap ring or a retaining ring and is sleeved on the outside of the second segment and has an axial distance from the first step structure, so that a limiting groove is formed between the first step structure and the limiting member 430. One side boundary of the limiting groove is the first step structure which is integral with the wheel hub portion 411, and the other side boundary is the limiting member 430 which is arranged separately. During assembly, the bearing 420 is first sleeved on the second segment, and then the limiting member 430 is installed and the spacing between the limiting member 430 and the first step structure is adjusted, so that the limiting groove is formed, thereby reducing the assembly difficulty of the bearing 420. On the other hand, the position where the limiting member 430 is sleeved on the outside of the wheel hub portion 411 can be adjusted as required to change the distance between the limiting member 430 and the first step structure, so that the width of the limiting groove is adjustable, which is conducive to compensating for the machining precision and assembly precision and reducing the manufacturing difficulty.

[0068] In an embodiment, the driving handle further comprises a second limiting structure 600 connected to the elbow assembly 200 and the bearing 420 to limit the axial movement of the bearing 420.

[0069] With reference to Figure 1 In the embodiment of the application, the second limiting structure 600 forms a block on both sides or one side of the bearing 420 to prevent the axial movement of the bearing 420, so that the reference position of the bearing 420 is unchanged, and the axial displacement of the wheel hub 411 can be completely converted into the gap change between the second end face gear part 412 and the driving gear 121 during the meshing adjustment, so as to ensure the precision and controllability of the meshing adjustment. In addition, during the operation of the drill grinding device, the axial movement of the driven gear 410 driven by the bearing 420 is avoided, and the unstable meshing or vibration of the driving gear 121 and the driven gear 410 is avoided, so as to ensure the reliability and stability of power transmission. The second limiting structure 600 can be a step structure in the assembly channel 201, or a retaining ring, a threaded sleeve or the like arranged in the assembly channel 201.

[0070] In an embodiment, the second limiting structure 600 comprises a second step structure and a fastener 610, the inner wall of the assembly channel 201 is provided with the second step structure, the fastener 610 is detachably connected to the elbow assembly 200, and the fastener 610 and the second step structure are arranged on opposite sides of the bearing 420 to limit the axial movement of the bearing 420.

[0071] In combination Figure 1 , Figure 3 and Figure 10 In the embodiment of the application, the second limiting structure 600 comprises a second step structure and a fastener 610, the inner wall of the assembly channel 201 is provided with the second step structure, the fastener 610 is detachably connected to the elbow assembly 200 by screwing or clamping, and the fastener 610 and the second step structure are respectively located on the two sides of the bearing 420, i.e. the bearing 420 is clamped between the second step structure and the fastener 610, so as to limit the axial movement of the bearing 420 to the two sides. The second limiting structure 600 is simple in structure and easy to process and assemble. During assembly, the bearing 420 is only needed to be put into the assembly channel 201 and one side of the bearing 420 is adhered to the second step structure, and then the fastener 610 is installed and fastened, so as to be convenient to operate. During disassembly, the bearing 420 can be quickly taken out by loosening the fastener 610, which is convenient for later maintenance or replacement.

[0072] In an embodiment, the outer peripheral wall of the fastener 610 is threadedly connected with the inner wall of the assembly channel 201; and / or,

[0073] The end of the fastener 610 away from the bearing 420 is provided with at least two wrench grooves 611.

[0074] In an embodiment of the present application, the outer peripheral wall of the fastener 610 is provided with external threads, and the inner wall of the assembly channel 201 of the elbow assembly 200 is provided with corresponding internal threads, and the two are detachably connected through threaded cooperation. The self-locking property of the threads can ensure that the fastener 610 is not easily loosened during operation of the device, and the axial clamping force on the bearing 420 is stable. On the other hand, by rotating the fastener 610, the axial position of the fastener 610 in the assembly channel 201 can be fine-tuned, so as to accurately control the clamping force on the bearing 420, avoiding damage to the bearing 420 due to being too tight or failure of fixation due to being too loose.

[0075] Referring to Figure 10 In an embodiment of the present application, the end of the fastener 610 away from the bearing 420 is provided with at least two wrench grooves 611, which are uniformly or symmetrically distributed along the circumference of the fastener 610, for example, two opposite wrench grooves 611, or three wrench grooves 611 distributed at 120°, etc. The wrench grooves 611 are used to provide force points for wrenches and other tools, facilitating installation of the fastener 610 and solving the problem of difficulty in manual disassembly due to the small size of the fastener 610.

[0076] In an embodiment, the driving handle further comprises:

[0077] A support sleeve 140, one end of the support sleeve 140 being arranged between the driving motor 122 and the first housing 110, and the other end extending to the inside of the assembly channel 201 and being sleeved on the outside of the drive gear 121; and

[0078] A wire 130, the first housing 110 being provided with a wire outlet groove 1102 extending along the axial direction of the first housing 110, the wire 130 being led out from the wire outlet groove 1102 and arranged in the assembly channel 201, and being arranged on the side of the support sleeve 140 away from the drive gear 121.

[0079] In an embodiment of the present application, the driving handle further comprises a support sleeve 140 and a wire 130, one end of the support sleeve 140 is arranged between the driving motor 122 and the first shell 110, and the other end extends to the inside of the assembly channel 201 and is sleeved on the outside of the driving gear 121. The first shell 110 is provided with a wire outlet slot 1102 extending along the axial direction of the first shell 110, the wire 130 is led out from the wire outlet slot 1102 and arranged in the assembly channel 201, and arranged on the side of the support sleeve 140 away from the driving gear 121. The support sleeve 140 separates the driving gear 121 and the wire 130, avoiding interference between the driving gear 121 and the wire 130, and reducing the risk of damage to the driving gear 121 and the wire 130.

[0080] In an embodiment, the driven gear 410 is provided with a through hole 4111 penetrating the driven gear 410 along the axial direction of the driven gear 410.

[0081] In an embodiment of the present application, the driven gear 410 is provided with a through hole 4111 penetrating the driven gear 410 along the axial direction of the driven gear 410. The user can see the meshing condition of the second end face tooth portion 412 and the first end face tooth portion 1211 through the through hole 4111, so that the user can more intuitively judge whether the assembly is in place, further improving the convenience of meshing debugging, and also facilitating the user to find the assembly problem of larger misalignment in time, avoiding damage to the driving gear 121 or the driven gear 410 during debugging. The through hole 4111 can be arranged on the hub portion 411 or the second end face tooth portion 412.

[0082] In an embodiment, the elbow assembly 200 is provided with a separate assembly channel 201 and a clamping ring groove 202, the driving assembly 120 is partially arranged in the assembly channel 201, and the clamping ring groove 202 is arranged at one end of the elbow assembly 200 facing the first shell 110.

[0083] The driving handle further comprises a connecting sleeve 300 for fixing the elbow assembly 200 to the first shell 110, the connecting sleeve 300 is threadedly connected with the first shell 110, and the connecting sleeve 300 is partially arranged in the clamping ring groove 202, so that the connecting sleeve 300 can rotate around the axial direction and be relatively fixed with the axial position of the elbow assembly 200.

[0084] In an embodiment of the present application, the elbow assembly 200 is internally provided with an assembly channel 201, the wire 130 is arranged in the assembly channel 201, the elbow assembly 200 is provided with a clamping ring groove 202 at one end thereof facing the first housing 110, and the connecting sleeve 300 is arranged in the clamping ring groove 202 at one end thereof close to the elbow assembly 200, so that the connecting sleeve 300 can rotate relative to the elbow assembly 200 and can drive the elbow assembly 200 to axially move, and one end of the connecting sleeve 300 close to the first housing 110 is detachably connected to the first housing 110 by screwing. During assembly, the threads between the connecting sleeve 300 and the first housing 110 are tightened, the connecting sleeve 300 can be rotated alone without driving the elbow assembly 200 to rotate, but only drives the elbow assembly 200 to axially move close to the first handle assembly, so that the elbow assembly 200 is fixedly and firmly connected to the first handle assembly. Conversely, during disassembly, the connecting sleeve 300 can be rotated alone without driving the elbow assembly 200 to rotate, so as to avoid the elbow assembly 200 driving the wire 130 in the assembly channel 201 to be twisted, thereby reducing the damage risk of the wire 130 and improving the reliability and safety of the grinding drill device. In addition, the assembly channel 201 for the wire 130 and the clamping ring groove 202 for the connecting sleeve 300 are physically separated, which reduces the possibility of the connecting sleeve 300 driving the wire 130 to be twisted, and further reduces the damage risk of the wire 130.

[0085] In an embodiment, the elbow assembly 200 comprises:

[0086] an elbow body 210 provided with a first channel; and

[0087] a locking sleeve 220 positioned in the elbow body 210, the locking sleeve 220 has a space between one end thereof close to the first housing 110 and an inner wall of the first channel, the space forms the clamping ring groove 202, the locking sleeve 220 is provided with a second channel, the second channel is in communication with the first channel to form the assembly channel 201, and the wire 130 is arranged in the first channel and the second channel.

[0088] Referring to Figure 1 , Figure 2 and Figure 4In the embodiment of the present application, the elbow assembly 200 comprises an elbow body 210 and a lock sleeve 220, the elbow body 210 is provided with a first channel penetrating through itself, the lock sleeve 220 is provided with a second channel penetrating through itself, the first end of the lock sleeve 220 is fixed to the inner wall of the first channel, which can be achieved by threaded connection or welding, etc., to ensure that the lock sleeve 220 is fixed firmly with the elbow body 210, and the second channel is communicated with the first channel to form a fitting channel 201 together; the second end of the lock sleeve 220 is kept apart from the inner wall of the first channel of the elbow body 210, and the interval forms a clamping ring groove 202, which reduces the manufacturing difficulty of the clamping ring groove 202 through split design. When assembling with the connecting sleeve 300, the one end of the connecting sleeve 300 placed in the clamping ring groove 202 can be placed in the first channel first, and then the first end of the lock sleeve 220 is connected with the inner wall of the first channel to form the clamping ring groove 202, thereby reducing the assembly difficulty of the connecting sleeve 300 and the clamping ring groove 202.

[0089] In an embodiment, the lock sleeve 220 is threadedly connected with the elbow body 210, and the first channel is provided with a limiting step surface abutting against the lock sleeve 220.

[0090] In the embodiment of the present application, the lock sleeve 220 is fixed in the first channel of the elbow body 210 in the form of threaded connection, which is convenient to disassemble and fixed firmly. The limiting step surface is arranged on the inner wall of the first channel, which plays a positioning role on the lock sleeve 220. When the lock sleeve 220 is installed towards the first channel, the lock sleeve 220 abuts against the limiting step surface to ensure that the lock sleeve 220 is installed in place, thereby ensuring the assembly accuracy of the lock sleeve 220 and the elbow body 210 and improving the convenience of assembly.

[0091] In an embodiment, the elbow assembly 200 further comprises a positioning structure 203, which connects the lock sleeve 220 and the first housing 110 to block the rotation of the lock sleeve 220 relative to the first housing 110.

[0092] In the embodiment of the present application, the elbow assembly 200 further comprises a positioning structure 203, which connects the lock sleeve 220 and the first housing 110 by means of pin, key groove cooperation, etc., so that the lock sleeve 220 cannot rotate relative to the first housing 110, and thus the entire elbow assembly 200 cannot rotate relative to the first housing 110, which avoids the rotation of the lock sleeve 220 and the elbow body 210 relative to the first housing 110 due to vibration or external force, thereby avoiding the wire 130 being twisted and driven, and further reducing the risk of damage of the wire 130. In addition, during the assembly and disassembly process, since the elbow assembly 200 cannot rotate relative to the first housing 110, the user only needs to rotate the connecting sleeve 300, without the need to fix the elbow assembly 200 with one hand and rotate the connecting sleeve 300 with the other hand, so that the assembly and disassembly operation is more convenient and fast.

[0093] In an embodiment, the positioning structure 203 comprises a positioning protrusion 2201 and a positioning groove 1101, one of the lock sleeve 220 and the first housing 110 is provided with the positioning groove 1101, and the other of the lock sleeve 220 and the first housing 110 is provided with the positioning protrusion 2201, the positioning protrusion 2201 is inserted into the positioning groove 1101 to block the rotation of the lock sleeve 220 relative to the first housing 110.

[0094] In combination Figure 6 to Figure 8 In an embodiment of the present application, the positioning structure 203 comprises a positioning protrusion 2201 and a positioning groove 1101, the positioning protrusion 2201 can be arranged at one end of the lock sleeve 220 facing the first housing 110, and the positioning groove 1101 can be arranged at one end of the first housing 110 facing the lock sleeve 220; conversely, the positioning groove 1101 can be arranged at one end of the lock sleeve 220 facing the first housing 110, and the positioning protrusion 2201 can be arranged at one end of the first housing 110 facing the lock sleeve 220. After the positioning protrusion 2201 is inserted into the positioning groove 1101, the inner side wall of the positioning groove 1101 and the outer side wall of the positioning protrusion 2201 are in contact to block the circumferential relative rotation of the two, and in the axial direction, the positioning protrusion 2201 can slide along the depth direction of the positioning groove 1101, and will not hinder the axial fastening function of the connecting sleeve 300. The design structure of the positioning protrusion 2201 and the positioning groove 1101 is simple and easy to process, which is conducive to reducing the manufacturing cost of the grinding drill device.

[0095] In an embodiment, the elbow assembly 200 further comprises a first limiting structure 204, the first limiting structure 204 connects the elbow body 210 and the connecting sleeve 300, or the first limiting structure 204 connects the lock sleeve 220 and the connecting sleeve 300 to block the connecting sleeve 300 from leaving the clamping ring groove 202.

[0096] Referring to Figure 5In the embodiment of the present application, the elbow assembly 200 further comprises a first limiting structure 204 for blocking the connecting sleeve 300 from leaving the clamping ring groove 202, so as to ensure that the screw-rotated connecting sleeve 300 can drive the elbow assembly 200 to move axially. The first limiting structure 204 can be arranged between the connecting sleeve 300 and the elbow body 210, or arranged between the connecting sleeve 300 and the lock sleeve 220. By arranging the first limiting structure 204, the reliability of the connection between the connecting sleeve 300 and the elbow assembly 200 is improved, the connecting sleeve 300 can drive the elbow assembly 200 to move axially, and the risk of separation between the connecting sleeve 300 and the elbow assembly 200 in a vibrating environment is reduced. The first limiting structure 204 can be implemented in various structural forms, for example, by a limiting pin and a ring groove. The limiting pin and the ring groove are arranged on the inner wall of the clamping ring groove 202 and the outer wall of the connecting sleeve 300 respectively. After the connecting sleeve 300 is inserted into the clamping ring groove 202, the limiting pin is embedded in the ring groove and can rotate circumferentially around the ring groove, which not only enables the connecting sleeve 300 to rotate circumferentially relative to the elbow assembly 200, but also limits the axial movement of the connecting sleeve 300 relative to the elbow assembly 200. The first limiting structure 204 can also be implemented by a flange and a flange. The flanges can be arranged on the inner wall of the clamping ring groove 202 and the outer wall of the connecting sleeve 300 respectively. After the connecting sleeve 300 is inserted into the clamping ring groove 202, the flange on the inner wall of the clamping ring groove 202 blocks the flange on the outer wall of the connecting sleeve 300 from moving axially, thereby limiting the axial movement of the connecting sleeve 300 relative to the elbow assembly 200.

[0097] In an embodiment, the first limiting structure 204 comprises a first protrusion 301 and a second protrusion 2202. The first protrusion 301 is arranged at one end of the connecting sleeve 300 inserted into the clamping ring groove 202. The second protrusion 2202 is arranged on the outer wall of the second end of the lock sleeve 220 close to the first housing 110. The end of the second protrusion 2202 towards the inside of the clamping ring groove 202 abuts against the first protrusion 301 to block the connecting sleeve 300 from leaving the clamping ring groove 202.

[0098] Referring to Figure 5 In the embodiment of the present application, the first limiting structure 204 comprises a first protrusion 301 and a second protrusion 2202. The inner wall of one end of the connecting sleeve 300 inserted into the clamping ring groove 202 is provided with an annular boss to form the first protrusion 301. The outer wall of the second end of the lock sleeve 220 is provided with an annular boss to form the second protrusion 2202. When the connecting sleeve 300 is inserted into the clamping ring groove 202, the second protrusion 2202 reduces the size of the slot opening of the limiting groove, blocks the first protrusion 301 from leaving the limiting groove, and blocks the connecting sleeve 300 from separating from the limiting groove. The second protrusion 2202 and the second protrusion 2202 are simple in structure and can be directly formed on the lock sleeve 220 and the connecting sleeve 300, which is conducive to ensuring the strength of the first limiting structure 204 and reducing the processing and assembly of additional parts.

[0099] In an embodiment, the inner wall of the first channel is provided with a first wire passing groove 2101, and the wire 130 is at least partially accommodated in the first wire passing groove 2101; and / or,

[0100] The inner wall of the second channel is provided with a second wire passing groove (not shown in the figure), and the wire 130 is at least partially accommodated in the second wire passing groove.

[0101] In combination Figure 1 and Figure 9 In an embodiment of the present application, the inner wall of the first channel is provided with a first wire passing groove 2101, the first wire passing groove 2101 provides a preset path for the wire 130, which facilitates the rapid positioning of the wire 130 in the elbow body 210, improves the convenience of assembly of the wire 130, and the wire 130 accommodated in the first wire passing groove 2101 is not easy to interfere with other parts in the first channel, further reducing the risk of damage to the wire 130.

[0102] In an embodiment of the present application, the inner wall of the second channel is provided with a second wire passing groove, the second wire passing groove provides a preset path for the wire 130, which facilitates the rapid positioning of the wire 130 in the elbow body 210, improves the convenience of assembly of the wire 130, and the wire 130 accommodated in the second wire passing groove is not easy to interfere with other parts in the second channel, further reducing the risk of damage to the wire 130.

[0103] In combination Figure 1 and Figure 11 The present application also provides a grinding drill device, which is matched with a grinding drill tool and comprises:

[0104] The driving handle of the grinding drill device described above, and a connecting handle 700 detachably connected with the driving handle;

[0105] The connecting handle 700 is used to connect the driving handle and the grinding drill tool, so that the driving motor 122 can drive the grinding drill tool to rotate around its own axis.

[0106] The specific structure of the driving handle of the grinding drill device is referred to the above-mentioned embodiments. Since the present grinding drill device adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0107] The connecting handle 700 is used to install the grinding drill tool, and the connecting handle 700 is connected with the driving handle through the elbow assembly 200 to form the handle of the grinding drill device. Since the elbow body 210 of the elbow assembly 200 is bent at a certain angle, the axis direction of the first handle assembly and the axis direction of the connecting handle 700 have a certain included angle, which facilitates the user to hold the handle to extend the grinding drill tool into a part of the surgical area that is difficult to reach, and improves the convenience of surgical operation.

[0108] In combination Figure 1 and Figure 11 The application also provides a grinding drill device matched with the grinding drill tool, comprising:

[0109] The driving handle of the grinding drill device and the connecting handle 700 detachably connected with the driving handle;

[0110] The connecting handle 700 comprises a shell assembly 710 detachably connected with the elbow assembly 200 and a transmission shaft 720 arranged in the shell assembly 710, the transmission shaft 720 is in transmission connection with the driven gear 410 and the grinding drill tool respectively, the through hole 4111 is a transmission hole, and the transmission shaft 720 is provided with a transmission shaft segment extending into the through hole 4111.

[0111] The specific structure of the driving handle of the grinding drill device is referred to the above-mentioned embodiments, since the grinding drill device adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0112] The connecting handle 700 comprises the shell assembly 710 and the transmission shaft 720, one end of the transmission shaft 720 is connected with the driven gear 410, and the other end is connected with the grinding drill tool to drive the grinding drill tool to rotate. Specifically, the transmission shaft 720 is provided with a transmission shaft segment near the end close to the driven gear 410, the transmission shaft segment is inserted into the through hole 4111 of the driven gear 410, and the power transmission from the driven gear 410 to the transmission shaft 720 is realized through the key groove cooperation, non-circular cross-section design and other ways. In the process of assembling the driving handle itself, the through hole 4111 on the driven gear 410 serves as an observation hole, which facilitates the user to debug the meshing condition of the driving gear 121 and the driven gear 410, and after the driving handle is assembled with the connecting handle 700, the through hole 4111 becomes a transmission hole for the assembly of the driven gear 410 and the transmission shaft 720, and the two functions are realized through the same through hole 4111, thereby improving the structural compactness of the grinding drill device.

[0113] The above-mentioned is only an exemplary embodiment of the application, and does not limit the protection scope of the application, any equivalent structural transformation made according to the technical concept of the application and the contents of the specification and drawings, or direct / indirect application in other related technical fields is included in the protection scope of the application.

Claims

1. A drive handle for a drill sharpening device, characterized in that The drive handle comprises: a first handle assembly comprising a first housing, a driving motor arranged in the first housing, and a driving gear connected with the driving motor, the driving gear being provided with a first end face gear portion; an elbow assembly detachably connected with the first housing, the elbow assembly being provided with an assembly channel; a driven gear comprising a second end face gear portion and a hub portion, the hub portion being rotatably arranged in the assembly channel, an axis of the driving gear and an axis of the driven gear forming an included angle, the second end face gear portion being arranged at one end of the hub portion facing the first end face gear portion and being in meshing connection with the first end face gear portion; a bearing being sleeved on an outer portion of the hub portion and being fixed in an axial direction of the bearing to an inner portion of the assembly channel; and an adjusting structure connected with the hub portion and the bearing, for adjusting an axial position of the hub portion relative to the bearing so as to make the second end face gear portion approach or move away from the driving gear. The adjusting structure comprises a cooperating adjusting pad and a limiting groove, the limiting groove being annularly arranged on an outer circumferential wall of the hub portion, the bearing being partially arranged in the limiting groove, a width of the limiting groove being greater than a width of the bearing, the adjusting pad being arranged between an inner wall of the limiting groove and the bearing and being located at one side of the bearing facing the driving gear and / or at one side of the bearing away from the driving gear, so that when a thickness or a number of the adjusting pad changes, the second end face gear portion approaches or moves away from the driving gear.

2. The drive handle for a diamond drill according to claim 1, characterized in that The hub portion comprises a first segment and a second segment connected with each other, the second end face gear portion being arranged at one end of the first segment away from the second segment, an outer diameter of the second segment being smaller than an outer diameter of the first segment, and a first step structure being formed at a connection between the first segment and the second segment, the drill grinding device further comprising a limiting member, the limiting member being sleeved on an outer portion of the second segment and being spaced apart from the first step structure, so that the limiting groove is formed between the first step structure and the limiting member.

3. The drive handle for a burr assembly of claim 2, wherein, The drive handle further comprises a second limiting structure connected with the elbow assembly and the bearing, for limiting an axial movement of the bearing.

4. The drive handle for a burr assembly of claim 1 wherein, The second limiting structure comprises a second step structure and a fastener, an inner wall of the assembly channel being provided with the second step structure, the fastener being detachably connected with the elbow assembly, and the fastener and the second step structure being arranged at opposite sides of the bearing, for limiting the axial movement of the bearing.

5. The drive handle for a burr assembly of claim 4, wherein, An outer circumferential wall of the fastener is in threaded connection with the inner wall of the assembly channel; and / or 6. The drive handle for a burr assembly of claim 5, wherein, An end portion of the fastener away from the bearing is provided with at least two wrench grooves. The drive handle further comprises:

7. The drive handle for a burr assembly of claim 1 wherein, a support sleeve, one end of the support sleeve being arranged between the driving motor and the first housing, the other end of the support sleeve extending into the assembly channel and being sleeved on an outer portion of the driving gear; and a wire, the first housing being provided with a wire outlet groove extending in an axial direction of the first housing, the wire being led out from the wire outlet groove and being arranged in the assembly channel, and being arranged at a side of the support sleeve away from the driving gear. ​ 8. The driving handle of the abrasive drill device according to any one of claims 1 to 7, wherein The driven gear is provided with a through hole penetrating the driven gear along the axial direction of the driven gear.

9. A drill sharpening device adapted to fit a drill sharpener, characterized in that, The application relates to a driving handle of a drill device and a connecting handle detachably connected with the driving handle. The connecting handle is used for connecting the driving handle and the drill cutter, so that the driving motor can drive the drill cutter to rotate around the axial direction. The application relates to a driving handle of a drill device and a connecting handle detachably connected with the driving handle.

10. A drill sharpening device adapted to fit a drill sharpener, characterized in that, The connecting handle comprises a shell assembly detachably connected with the elbow assembly and a transmission shaft arranged in the shell assembly, the transmission shaft is in transmission connection with the driven gear and the drill cutter respectively, the through hole is a torque transmission hole, and the transmission shaft is provided with a torque transmission shaft segment extending into the through hole. ​ ​

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