Abrasive drilling device and connecting assembly of abrasive drilling device

Abstract

The invention discloses a grinding and drilling device and a connecting assembly of the grinding and drilling device, and relates to the technical field of medical instruments.The grinding and drilling device comprises a first handle, a second handle, a third handle and a fourth handle, the elbow assembly is provided with an assembly channel and a clamping ring groove which are separated from each other, the driving assembly partially penetrates through the assembly channel, and the clamping ring groove is formed in the end, facing the first shell, of the elbow assembly; the wire is led out from the first shell and penetrates through the assembly channel; and the connecting sleeve is used for fixing the elbow assembly to the first shell, the connecting sleeve is in threaded connection with the first shell, and the connecting sleeve is partially arranged in the clamping ring groove, so that the connecting sleeve can rotate around the axial direction of the connecting sleeve and is relatively fixed to the axial position of the elbow assembly. According to the technical scheme provided by the invention, the risk of wire torsion damage is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a grinding drill device and a connecting component for the grinding drill device. Background Technology

[0002] In modern surgery, grinding and drilling devices are widely used for grinding, drilling, shaping, and removing bone or diseased tissue. A typical grinding and drilling device includes a first handle and a second handle. The first handle houses a drive assembly, and the second handle houses a transmission assembly. The outer shells of the first and second handles are fixedly connected. The second handle is used to mount the grinding and drilling tools. The drive assembly is connected to the grinding and drilling tools via the transmission assembly, thereby transmitting the rotational power of the drive assembly to the grinding and drilling tools to achieve functions such as grinding or drilling.

[0003] A grinding device is available. To adapt to complex operating spaces or achieve specific surgical angles, the housing of its second handle has an elbow near the end of the first handle. The elbow is threadedly connected to the housing of the first handle to assemble the second handle with the first handle. A transmission component inside the second handle extends into the elbow, connecting a drive component and the grinding tool, changing the direction of power transmission. This causes the grinding tool to form a certain angle with the first handle, allowing the grinding tool to enter hard-to-reach areas at a specific angle. Furthermore, a wire is installed inside the grinding device, extending from the inside of the first handle, through the inside of the second handle, and to the grinding tool. This wire is used for tool identification and button control on the second handle to start and stop the drive component.

[0004] However, during the process of assembling and disassembling the second handle from the first handle, the operator needs to hold and rotate the entire second handle. The wire passes from the inside of the first handle into the inside of the second handle, and it is easy to twist along with the bend, which can cause the wire to break or be damaged due to twisting. Summary of the Invention

[0005] The main objective of this invention is to provide a drilling device and a connecting assembly for the drilling device, which aims to reduce the risk of wire twisting damage.

[0006] To achieve the above objectives, the present invention provides a grinding and drilling apparatus comprising:

[0007] The first handle includes a first housing and a drive assembly disposed within the first housing;

[0008] The elbow assembly has a separated assembly channel and a snap ring groove. The drive assembly is partially inserted through the assembly channel, and the snap ring groove is located at the end of the elbow assembly facing the first housing.

[0009] A wire, extending from the first housing and passing through the assembly channel; and

[0010] A connecting sleeve is used to fix the elbow assembly to the first housing. The connecting sleeve is threaded to the first housing. The connecting sleeve is partially disposed in the snap ring groove so that the connecting sleeve can rotate around its own axis and be fixed relative to the axial position of the elbow assembly.

[0011] In one embodiment, the elbow assembly includes:

[0012] The elbow body is provided with a first channel; and

[0013] A locking sleeve is positioned within the elbow body. The end of the locking sleeve that is relatively close to the first housing has a gap with the inner wall of the first channel. The gap forms the snap-fit ​​groove. The locking sleeve has a second channel, which communicates with the first channel to form the assembly channel. The wire passes through the first channel and the second channel.

[0014] In one embodiment, the locking sleeve is threadedly connected to the elbow body, and the first channel is provided with a limiting step surface that abuts against the locking sleeve.

[0015] In one embodiment, the elbow assembly further includes a positioning structure that connects the locking sleeve and the first housing to prevent the locking sleeve from rotating relative to the first housing.

[0016] In one embodiment, the positioning structure includes a cooperating positioning protrusion and a positioning groove. One of the locking sleeve and the first housing is provided with the positioning groove, and the other of the locking sleeve and the first housing is provided with the positioning protrusion. The positioning protrusion is inserted into the positioning groove to prevent the locking sleeve from rotating relative to the first housing.

[0017] In one embodiment, the elbow assembly further includes a first limiting structure, which connects the elbow body and the connecting sleeve, or the first limiting structure connects the locking sleeve and the connecting sleeve, to prevent the connecting sleeve from leaving the snap ring groove.

[0018] In one embodiment, the first limiting structure includes a first protrusion and a second protrusion. The first protrusion is disposed at one end of the connecting sleeve that is inserted into the snap ring groove, and the second protrusion is disposed on the outer wall of the locking sleeve that is relatively close to the first housing. The end of the second protrusion facing the inside of the snap ring groove abuts against the first protrusion to prevent the connecting sleeve from leaving the snap ring groove.

[0019] In one embodiment, the inner wall of the first channel is provided with a first wire guide groove, and the wire is at least partially housed in the first wire guide groove; and / or,

[0020] The inner wall of the second channel is provided with a second wire guide groove, and the wire is at least partially housed in the second wire guide groove.

[0021] In one embodiment, the grinding device further includes a second handle connected to the elbow assembly, wherein the axial direction of the first handle and the axial direction of the second handle form an angle.

[0022] The present invention also proposes a connecting assembly for a drilling device, used to connect a first handle and a second handle of the drilling device, comprising:

[0023] An elbow assembly for connecting to the second handle, the elbow assembly having a spaced-out assembly channel and a snap-fit ​​groove, the assembly channel for threading a wire, and the snap-fit ​​groove being located at the end of the elbow assembly facing the first handle; and

[0024] A connecting sleeve is used to fix the elbow assembly to the first handle. The connecting sleeve is threaded to the first handle. The connecting sleeve is partially disposed in the snap ring groove so that the connecting sleeve can rotate around its own axis and be fixed relative to the axial position of the elbow assembly.

[0025] In one embodiment, the elbow assembly includes:

[0026] Elbow body for connecting the second handle, the elbow body having a first channel; and

[0027] A locking sleeve is positioned within the elbow body. The end of the locking sleeve closest to the first handle has a gap between it and the inner wall of the first channel. The gap forms the snap-fit ​​groove. The locking sleeve has a second channel, which communicates with the first channel to form the assembly channel. The wire passes through the first channel and the second channel.

[0028] In one embodiment, the locking sleeve is threadedly connected to the elbow body, and the first channel has a limiting step surface that abuts against the locking sleeve; and / or,

[0029] The inner wall of the first channel is provided with a first wire guide groove, and the wire is at least partially housed in the first wire guide groove; and / or,

[0030] The inner wall of the second channel is provided with a second wire guide groove, and the wire is at least partially housed in the second wire guide groove.

[0031] In one embodiment, the elbow assembly further includes a positioning structure connecting the locking sleeve and the first handle to prevent the locking sleeve from rotating relative to the first handle; and / or,

[0032] The elbow assembly further includes a first limiting structure, which connects the elbow body and the connecting sleeve, or the first limiting structure connects the locking sleeve and the connecting sleeve, to prevent the connecting sleeve from leaving the snap ring groove.

[0033] The grinding device of the present invention includes a first handle, a wire, an elbow assembly, and a connecting sleeve. The first handle includes a first housing and a drive assembly. The drive assembly is used as a power source to directly or indirectly drive the tool of the grinding device to rotate. The elbow assembly has an assembly channel inside, through which the wire connected to the drive mechanism passes. The end of the elbow assembly facing the drive mechanism has a snap-fit ​​ring groove. The end of the connecting sleeve near the elbow assembly is located in the snap-fit ​​ring groove, allowing the connecting sleeve to rotate relative to the elbow assembly and also drive the elbow assembly to move axially. The end of the connecting sleeve near the first housing is detachably connected to the first housing via threads. During assembly, tightening the threads between the connecting sleeve and the first housing allows the connecting sleeve to rotate independently without causing the elbow assembly to rotate; it only causes the elbow assembly to move axially towards the first handle, thus securing the elbow assembly to the first handle. Conversely, during disassembly, the connecting sleeve can also rotate independently without causing the elbow assembly to rotate, thereby preventing the elbow assembly from causing the wire in the assembly channel to twist, reducing the risk of wire damage, and improving the reliability and safety of the grinding device. In addition, the assembly channel for wire threading is physically separated from the snap ring groove for installing the connecting sleeve, which reduces the possibility of the connecting sleeve causing the wire to twist, further reducing the risk of wire damage. Attached Figure Description

[0034] 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.

[0035] Figure 1 A cross-sectional view of a partial structure of an embodiment of the grinding and drilling apparatus provided by the present invention. Figure 1 ;

[0036] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0037] Figure 3 for Figure 1 A magnified view of a section at point B in the middle;

[0038] Figure 4 A cross-sectional view of the elbow assembly of the grinding and drilling apparatus provided by the present invention;

[0039] Figure 5 A cross-sectional view of the connecting assembly of the grinding and drilling apparatus provided by the present invention;

[0040] Figure 6 A schematic diagram of the locking sleeve of the elbow assembly of the grinding and drilling device provided by the present invention;

[0041] Figure 7 A schematic diagram of a portion of the grinding and drilling device provided by the present invention;

[0042] Figure 8 A partial cross-sectional view of a portion of the structure of the grinding and drilling device provided by the present invention;

[0043] Figure 9 A schematic diagram of the elbow body of the elbow assembly of the grinding and drilling device provided by the present invention;

[0044] Figure 10 A schematic diagram of the fastener of the second limiting structure of the grinding and drilling device provided by the present invention;

[0045] Figure 11 A cross-sectional view of a partial structure of an embodiment of the grinding and drilling apparatus provided by the present invention. Figure 2 .

[0046] Explanation of icon numbers:

[0047] 110. First housing; 1101. Positioning groove; 1102. Cable outlet groove; 120. Drive assembly; 121. Drive gear; 122. Motor; 130. Wire; 140. Support sleeve;

[0048] 200, Elbow assembly; 201, Assembly channel; 202, Snap-fit ​​ring groove; 203, Positioning structure; 204, First limiting structure; 210, Elbow body; 2101, First wire guide groove; 220, Locking sleeve; 2201, Positioning protrusion; 2202, Second protrusion;

[0049] 300. Connecting sleeve; 301. First protrusion;

[0050] 410. Driven gear; 411. Hub; 412. Gear teeth; 420. Bearing; 430. Limiting element;

[0051] 500. Adjustment structure; 510. Adjustment pad;

[0052] 600. Second limiting structure; 610. Fastener; 611. Wrench groove;

[0053] 700. Second handle.

[0054] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0056] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0057] In this invention, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection, a direct connection or an indirect connection through an intermediate medium, or a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] 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.

[0059] This invention proposes a grinding and drilling device.

[0060] Please see Figure 1 , Figure 2 , Figure 4 as well as Figure 5 , Figure 1 A cross-sectional view of a partial structure of an embodiment of the grinding and drilling apparatus provided by the present invention. Figure 1 , Figure 2 for Figure 1 A magnified view of a portion of point A in the middle. Figure 4 This is a cross-sectional view of the elbow assembly of the grinding and drilling device provided by the present invention. Figure 5 This is a cross-sectional view of the connecting assembly of the grinding and drilling apparatus provided by the present invention.

[0061] In one embodiment of the present invention, the grinding device includes:

[0062] The first handle includes a first housing 110 and a drive assembly 120 disposed within the first housing 110;

[0063] The elbow assembly 200 is provided with a separated assembly channel 201 and a snap ring groove 202. The drive assembly 120 is partially inserted through the assembly channel 201, and the snap ring groove 202 is provided at the end of the elbow assembly 200 facing the first housing 110.

[0064] Wire 130 extends from the first housing 110 and passes through the assembly channel 201; and

[0065] The connecting sleeve 300 is used to fix the elbow assembly 200 to the first housing 110. The connecting sleeve 300 is threadedly connected to the first housing 110. The connecting sleeve 300 is partially disposed in the snap ring groove 202 so that the connecting sleeve 300 can rotate around its own axis and be relatively fixed to the axial position of the elbow assembly 200.

[0066] The grinding device in the technical solution of the present invention includes a first handle, a wire 130, an elbow assembly 200, and a connecting sleeve 300. The first handle includes a first housing 110 and a drive assembly 120. The drive assembly 120 is used as a power source to directly or indirectly drive the tool of the grinding device to rotate. The elbow assembly 200 has an assembly channel 201 inside. The wire 130 connected to the drive mechanism passes through the assembly channel 201. The elbow assembly 200 has a snap-fit ​​groove 202 at one end facing the drive mechanism. The connecting sleeve 300 is disposed in the snap-fit ​​groove 202 at one end near the elbow assembly 200, so that the connecting sleeve 300 can rotate relative to the elbow assembly 200 and drive the elbow assembly 200 to move axially. The connecting sleeve 300 is detachably connected to the first housing 110 by a thread at one end near the first housing 110. During assembly, tightening the threads between the connecting sleeve 300 and the first housing 110 allows the connecting sleeve 300 to rotate independently without causing the elbow assembly 200 to rotate. Instead, it moves the elbow assembly 200 axially closer to the first handle, ensuring a secure fixation between the elbow assembly 200 and the first handle. Conversely, during disassembly, the connecting sleeve 300 can also rotate independently without causing the elbow assembly 200 to rotate. This prevents the elbow assembly 200 from causing the wire 130 within the assembly channel 201 to twist, thereby reducing the risk of damage to the wire 130 and improving the reliability and safety of the grinding device. Furthermore, the assembly channel 201 through which the wire 130 passes is physically separated from the snap-fit ​​groove 202 where the connecting sleeve 300 is installed, reducing the possibility of the connecting sleeve 300 causing the wire 130 to twist, further reducing the risk of damage to the wire 130.

[0067] In one embodiment, the elbow assembly 200 includes:

[0068] Elbow body 210, provided with a first channel; and

[0069] The locking sleeve 220 is positioned inside the elbow body 210. There is a gap between the end of the locking sleeve 220 that is relatively close to the first housing 110 and the inner wall of the first channel, and the gap forms a snap ring groove 202. The locking sleeve 220 is provided with a second channel, which is connected to the first channel to form an assembly channel 201. The wire 130 passes through the first channel and the second channel.

[0070] Reference Figure 1 , Figure 2 as well as Figure 4In an embodiment of the present invention, the elbow assembly 200 includes an elbow body 210 and a locking sleeve 220. The elbow body 210 has a first channel penetrating through itself, and the locking sleeve 220 has a second channel penetrating through itself. The first end of the locking sleeve 220 is fixed to the inner wall of the first channel, which can be achieved by threaded connection or welding, ensuring that the locking sleeve 220 and the elbow body 210 are securely fixed. The second channel communicates with the first channel, forming an assembly channel 201. The second end of the locking sleeve 220 is spaced from the inner wall of the first channel of the elbow body 210, and this space forms a snap-fit ​​groove 202. The split design reduces the manufacturing difficulty of the snap-fit ​​groove 202. When assembling with the connecting sleeve 300, one end of the connecting sleeve 300 located in the snap-fit ​​groove 202 can be placed in the first channel first, and then the first end of the locking sleeve 220 can be connected to the inner wall of the first channel to form the snap-fit ​​groove 202, thereby reducing the assembly difficulty of the connecting sleeve 300 and the snap-fit ​​groove 202.

[0071] In one embodiment, the locking sleeve 220 is threadedly connected to the elbow body 210, and the first channel is provided with a limiting step surface that abuts against the locking sleeve 220.

[0072] In an embodiment of the present invention, the locking sleeve 220 and the elbow body 210 are connected by threads, so that the locking sleeve 220 is fixed inside the first channel of the elbow body 210, which is convenient for disassembly and assembly and secure. A limiting step surface is provided on the inner wall of the first channel. The limiting step surface plays a positioning role for the locking sleeve 220. When the locking sleeve 220 is installed into the first channel, the locking sleeve 220 abuts against the limiting step surface, ensuring that the locking sleeve 220 is installed in place, guaranteeing the assembly accuracy of the locking sleeve 220 and the elbow body 210, and improving the convenience of assembly.

[0073] In one embodiment, the elbow assembly 200 further includes a positioning structure 203, which connects the locking sleeve 220 and the first housing 110 to prevent the locking sleeve 220 from rotating relative to the first housing 110.

[0074] In an embodiment of the present invention, the elbow assembly 200 further includes a positioning structure 203. The positioning structure 203 connects the locking sleeve 220 and the first housing 110 using pins, keyways, or other means, preventing the locking sleeve 220 from rotating relative to the first housing 110. This prevents the entire elbow assembly 200 from rotating relative to the first housing 110, thus avoiding rotation of the locking sleeve 220 and the elbow body 210 relative to the first housing 110 due to vibration or external force. Consequently, it prevents the wire 130 from being twisted, further reducing the risk of damage to the wire 130. Furthermore, during assembly and disassembly, since the elbow assembly 200 cannot rotate relative to the first housing 110, the user only needs to rotate the connecting sleeve 300, eliminating the need to hold the elbow assembly 200 with one hand and rotate the connecting sleeve 300 with the other, making the assembly and disassembly operations more convenient and faster.

[0075] In one embodiment, the positioning structure 203 includes a cooperating positioning protrusion 2201 and a positioning groove 1101. One of the locking sleeve 220 and the first housing 110 is provided with the positioning groove 1101, and the other of the locking 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 prevent the locking sleeve 220 from rotating relative to the first housing 110.

[0076] Combination Figures 6 to 8 In an embodiment of the present invention, the positioning structure 203 includes a cooperating positioning protrusion 2201 and a positioning groove 1101. The positioning protrusion 2201 can be provided at the end of the locking sleeve 220 facing the first housing 110, and the positioning groove 1101 can be correspondingly provided at the end of the first housing 110 facing the locking sleeve 220; conversely, the positioning groove 1101 can be provided at the end of the locking sleeve 220 facing the first housing 110, and the positioning protrusion 2201 can be correspondingly provided at the end of the first housing 110 facing the locking sleeve 220. After the positioning protrusion 2201 is inserted into the positioning groove 1101, the inner sidewall of the positioning groove 1101 contacts the outer sidewall of the positioning protrusion 2201, preventing circumferential relative rotation between them. Axially, the positioning protrusion 2201 can slide along the depth direction of the positioning groove 1101 without hindering the axial fastening function of the connecting sleeve 300. The design of the positioning protrusion 2201 and the positioning groove 1101 is simple and easy to process, which helps to reduce the manufacturing cost of the grinding and drilling device.

[0077] In one embodiment, the elbow assembly 200 further includes a first limiting structure 204, which connects the elbow body 210 and the connecting sleeve 300, or the first limiting structure 204 connects the locking sleeve 220 and the connecting sleeve 300, so as to prevent the connecting sleeve 300 from leaving the snap ring groove 202.

[0078] Reference Figure 5In an embodiment of the present invention, the elbow assembly 200 further includes a first limiting structure 204, which prevents the connecting sleeve 300 from disengaging from the snap ring groove 202, thereby ensuring that the connecting sleeve 300, which rotates helically relative to the first housing, can drive the elbow assembly 200 to move axially. The first limiting structure 204 can be disposed between the connecting sleeve 300 and the elbow body 210, or between the connecting sleeve 300 and the locking sleeve 220. By setting the first limiting structure 204, the reliability of the connection between the connecting sleeve 300 and the elbow assembly 200 is improved, ensuring that the connecting sleeve 300 can drive the elbow assembly 200 to move axially, and reducing the risk of separation between the connecting sleeve 300 and the elbow assembly 200 under vibration conditions. The first limiting structure 204 can be implemented in various structural forms. For example, it can be implemented by the cooperation of a limiting pin and an annular groove. The limiting pin and the annular groove are respectively set on the inner wall of the snap-fit ​​annular groove 202 and the outer wall of the connecting sleeve 300. After the connecting sleeve 300 is inserted into the snap-fit ​​annular groove 202, the limiting pin is embedded in the annular groove and can rotate around the annular groove circumferentially. This realizes the circumferential rotation of the connecting sleeve 300 relative to the elbow assembly 200 and restricts the axial movement of the connecting sleeve 300 relative to the elbow assembly 200. It can also be implemented by the cooperation of flanges. Alternatively, flanges can be set on the inner wall of the snap-fit ​​annular groove 202 and the outer wall of the connecting sleeve 300. After the connecting sleeve 300 is inserted into the snap-fit ​​annular groove 202, the flange on the inner wall of the snap-fit ​​annular groove 202 blocks the axial movement of the flange on the outer wall of the connecting sleeve 300, thereby restricting the axial movement of the connecting sleeve 300 relative to the elbow assembly 200.

[0079] In one embodiment, the first limiting structure 204 includes a first protrusion 301 and a second protrusion 2202. The first protrusion 301 is disposed at one end of the connecting sleeve 300 inserted into the snap ring groove 202. The second protrusion 2202 protrudes from the outer wall of the locking sleeve 220 that is relatively close to the first housing 110. The end of the second protrusion 2202 facing the inside of the snap ring groove 202 abuts against the first protrusion 301 to prevent the connecting sleeve 300 from leaving the snap ring groove 202.

[0080] Reference Figure 5 In an embodiment of the present invention, the first limiting structure 204 includes a first protrusion 301 and a second protrusion 2202. The inner wall of one end of the connecting sleeve 300 that inserts into the snap-fit ​​groove 202 is provided with an annular boss to form the first protrusion 301. The outer wall of the second end of the locking sleeve 220 is provided with an annular boss to form the second protrusion 2202. When the connecting sleeve 300 is inserted into the snap-fit ​​groove 202, the second protrusion 2202 reduces the opening size of the limiting groove, preventing the first protrusion 301 from leaving the limiting groove, thus preventing the connecting sleeve 300 from separating from the limiting groove. The second protrusion 2202 and the second protrusion 2202 have simple structures and can be directly machined on the locking sleeve 220 and the connecting sleeve 300, which helps to ensure the strength of the first limiting structure 204 and also reduces the processing and assembly of additional parts.

[0081] In one embodiment, the first limiting structure 204 further includes a first axial limiting surface and a second axial limiting surface that abut against each other, so as to define the axial position of the connecting sleeve 300 in the snap ring groove 202 together with the first protrusion 301 and the second protrusion 2202. The first axial limiting surface is provided on the connecting sleeve 300, and the second axial limiting surface can be provided on the locking sleeve 220 or the elbow body 210.

[0082] See Figure 5 In an embodiment of the present invention, the first axial limiting surface is provided on the connecting sleeve 300, and the second axial limiting surface is provided on the elbow body 210.

[0083] In one embodiment, the inner wall of the first channel is provided with a first wire guide groove 2101, and the wire 130 is at least partially received in the first wire guide groove 2101; and / or,

[0084] The inner wall of the second channel is provided with a second wire guide groove (not shown in the figure), and the wire 130 is at least partially housed in the second wire guide groove.

[0085] Combination Figure 1 and Figure 9 In an embodiment of the present invention, the inner wall of the first channel is provided with a first wire passage groove 2101. The first wire passage groove 2101 provides a preset path for the wire 130, which facilitates the quick positioning of the wire 130 in the elbow body 210, improves the convenience of assembling the wire 130, and the wire 130 housed in the first wire passage groove 2101 is less likely to interfere with other components in the first channel, further reducing the risk of damage to the wire 130.

[0086] In an embodiment of the present invention, the inner wall of the second channel is provided with a second wire passage groove, which provides a preset path for the wire 130, making it convenient for the wire 130 to be quickly positioned in the elbow body 210, improving the convenience of assembling the wire 130, and the wire 130 housed in the second wire passage groove is less likely to interfere with other components in the second channel, further reducing the risk of damage to the wire 130.

[0087] In one embodiment, the grinding device further includes a second handle 700, which is connected to the elbow assembly 200, and an angle is formed between the axial direction of the first handle and the axial direction of the second handle 700.

[0088] Reference Figure 11In an embodiment of the present invention, the grinding device further includes a second handle 700, which is used to mount the grinding tool. The second handle 700 is connected to the first handle via an elbow assembly 200 and a connecting sleeve 300 to form the handle of the grinding device. Because the elbow body 210 of the elbow assembly 200 is bent at a certain angle, there is a certain angle between the axial direction of the first handle and the axial direction of the second handle 700, which makes it easier for the user to hold the handle and insert the grinding tool into some hard-to-reach surgical areas, improving the convenience of surgical operation.

[0089] In one embodiment, the drive assembly 120 includes a rotatably disposed drive gear 121, and the grinding device further includes:

[0090] Driven gear 410 includes a toothed portion 412 and a hub portion 411. The hub portion 411 is rotatably disposed inside the assembly channel 201. The toothed portion 412 is disposed at the end of the hub portion 411 facing the driving gear 121 and meshes with the driving gear 121.

[0091] Bearing 420 is sleeved on the outside of hub portion 411 and fixed axially inside assembly channel 201; and

[0092] The adjusting structure 500 connects the hub 411 and the bearing 420, and is used to drive the hub 411 to move axially relative to the bearing 420 so that the gear tooth 412 moves closer to or away from the drive gear 121.

[0093] Reference Figure 1 and Figure 3In an embodiment of the present invention, the drive assembly 120 includes a motor 122 and a drive gear 121. The elbow assembly 200 is fixedly connected to the housing of the motor 122. The drive gear 121 is disposed on the output shaft of the motor 122, and the motor 122 drives the drive gear 121 to rotate. The grinding and drilling device also includes a driven gear 410, a bearing 420, and an adjustment structure 500. The driven gear 410 includes a toothed portion 412 and a hub portion 411. The hub portion 411 is rotatably disposed in the assembly channel 201 of the elbow assembly 200. The toothed portion 412 extends to the drive gear 121 and meshes with the drive gear 121. The bearing 420 is sleeved on the outside of the hub portion 411 and is axially fixed in the assembly channel 201 to form a stable support for the driven gear 410. The adjustment structure 500 connects the hub 411 and the bearing 420, and can drive the hub 411 to move axially relative to the bearing 420, thereby adjusting the gap between the gear tooth 412 and the drive gear 121, so that the drive gear 121 and the driven gear 410 mesh accurately. On the one hand, the ability to adjust the clearance between the driven gear 410 and the driving gear 121 improves the accuracy of their meshing, thereby ensuring the efficiency of power transmission, improving the stability and reliability of the transmission, and reducing the wear of the driving gear 121 and the driven gear 410, thus extending their service life. On the other hand, the driven gear 410, bearing 420, and adjustment structure 500 are mounted on the elbow assembly 200, which can be assembled separately from the drive assembly 120. Therefore, once the elbow assembly 200 and the drive assembly 120 are assembled, the meshing adjustment of the driven gear 410 and the driving gear 121 can be performed without assembling the entire grinding and drilling device. Fewer parts need to be disassembled during the adjustment process, thus improving the convenience of meshing adjustment of the driven gear 410 and the driving gear 121 and shortening the time spent on meshing adjustment. On the other hand, with the long-term use of the grinding and drilling device, the driving gear 121 and the driven gear 410 will wear due to meshing, resulting in an increase in meshing clearance. By adjusting the axial position of the driven gear 410 through the adjustment structure 500, the clearance caused by wear can be compensated, thereby reducing problems such as transmission vibration, noise and power loss caused by excessive clearance, and extending the service life of the grinding and drilling device.

[0094] In one embodiment, the adjustment structure 500 includes a cooperating adjustment pad 510 and a limiting groove. The limiting groove is circumferentially disposed on the outer peripheral wall of the hub portion 411. The bearing 420 is partially disposed in the limiting groove. The width of the limiting groove is greater than the width of the bearing 420. The adjustment pad 510 is disposed between the inner wall of the limiting groove and the bearing 420, and is located on the side of the bearing 420 facing the drive gear 121 and / or the side away from the drive gear 121, so that the gear tooth portion 412 is close to or away from the drive gear 121.

[0095] Combination Figure 1 and Figure 3In an embodiment of the present invention, the adjusting structure 500 includes an adjusting pad 510 and a limiting groove. The limiting groove is circumferentially disposed on the outer peripheral wall of the hub portion 411 and is continuously arranged along the circumferential direction of the hub portion 411. The limiting groove provides a receiving space for the bearing 420 and the adjusting pad 510. The inner side of the bearing 420 is located within the limiting groove, and the outer side abuts against the inner wall of the assembly channel 201. The width of the limiting groove (the dimension along the axial direction of the hub portion 411) is greater than the width of the bearing 420 (the dimension along its own axial direction), resulting in an axial gap between the bearing 420 and the inner wall of the limiting groove, thereby providing space for the axial movement of the hub portion 411 relative to the bearing 420. The adjusting shim 510 is used to be set in the gap between the limiting groove and the bearing 420 to achieve axial positioning of the hub 411. The adjusting shim 510 can be set on the side of the bearing 420 facing the driving gear 121, that is, 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; it can also be set on the side away from the driving gear 121, that is, 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 it can be set on both sides at the same time.

[0096] Specifically, when the gear teeth 412 need to be closer to the drive gear 121, an adjusting shim 510 can be added to the side of the bearing 420 facing the drive gear 121, or a thicker adjusting shim 510 can be used. The adjusting shim 510 will push the inner wall of the limiting groove towards the drive gear 121, thereby causing the hub 411 and gear teeth 412 to move closer to the drive gear 121. When the gear teeth 412 need to be away from the drive gear 121, an adjusting shim 510 can be added to the side of the bearing 420 away from the drive gear 121, or a thicker adjusting shim 510 can be used. The adjusting shim 510 will push the inner wall of the limiting groove away from the drive gear 121, thereby causing the hub 411 and gear teeth 412 to move away from the drive gear 121. The axial position of the driven gear 410 can be adjusted simply by adding, removing, or replacing adjusting shims 510 of different thicknesses. This method is inexpensive to manufacture, has a low operating threshold, and is simple, reliable, and easy to operate. The adjusting shim 510 can be in the form of a shim or washer, and its thickness, quantity and setting position can be adjusted and designed as needed to meet the axial displacement required by the hub 411.

[0097] In one embodiment, the hub portion 411 includes a first segment and a second segment connected together. The tooth portion 412 is disposed 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 device also includes a limiting member 430, which is sleeved on the outside of the second segment and spaced apart from the first step structure, so that a limiting groove is formed between the first step structure and the limiting member 430.

[0098] Combination Figure 1 and Figure 3In an embodiment of the present invention, the 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. Since the outer diameter of the second segment is smaller than that of the first segment, a first step structure is formed at the connection between the first segment and the second segment. The grinding device also includes a limiting member 430. The limiting member 430 can be in the form of a retaining ring or a retaining ring, etc., and is sleeved on the outside of the second segment. There is an axial distance between the limiting member 430 and the first step structure, so that the gap between the first step structure and the limiting member 430 forms a limiting groove. One side boundary of the limiting groove is a first step structure integrated with the hub 411, and the other side boundary is a separately set limiting member 430. During assembly, the bearing 420 is first fitted onto the second section, and then the limiting member 430 is installed and the interval between the limiting member 430 and the first step structure is adjusted to form the limiting groove, which reduces the assembly difficulty of the bearing 420. On the other hand, the position of the limiting member 430 fitted onto the outside of the hub 411 can be adjusted as needed to change the distance between the limiting member 430 and the first step structure, thus realizing the adjustable width of the limiting groove, which is beneficial for compensating for machining accuracy and assembly accuracy, and reducing manufacturing difficulty.

[0099] In one embodiment, the grinding device further includes a second limiting structure 600, which connects the elbow assembly 200 and the bearing 420 to restrict the bearing 420 from moving along its own axial direction.

[0100] Reference Figure 1 In an embodiment of the present invention, the grinding and drilling device further includes a second limiting structure 600. The second limiting structure 600 forms a block from both sides or one side of the axial direction of the bearing 420, preventing the bearing 420 from moving along its own axial direction and avoiding axial movement of the bearing 420. This keeps the reference position of the bearing 420 unchanged. During the meshing and adjustment of the driven gear 410 and the driving gear 121, the axial displacement of the hub 411 can be completely converted into the gap change between the gear teeth 412 and the driving gear 121, ensuring precise and controllable meshing and adjustment. In addition, during the operation of the grinding and drilling device, the bearing 420 is prevented from driving the driven gear 410 to move axially, preventing unstable meshing or increased vibration between the driving gear 121 and the driven gear 410, thereby ensuring the reliability and stability of power transmission. The second limiting structure 600 can be a stepped structure in the assembly channel 201, or a retaining ring, threaded sleeve, etc., provided in the assembly channel 201.

[0101] In one embodiment, the second limiting structure 600 includes 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. The fastener 610 and the second step structure are located on opposite sides of the bearing 420 to restrict the bearing 420 from moving along its own axial direction.

[0102] Combination Figure 1 , Figure 3 and Figure 10 In an embodiment of the present invention, the second limiting structure 600 includes a second step structure and a fastener 610. The inner wall of the assembly channel 201 forms a second step structure where the inner diameter of the section where the bearing 420 is installed is smaller than the adjacent section. The fastener 610 is detachably connected to the elbow assembly 200 via threaded connection or snap-fit. The fastener 610 and the second step structure are located on opposite sides of the bearing 420, i.e., the bearing 420 is sandwiched between the second step structure and the fastener 610, thereby restricting the axial movement of the bearing 420 to both sides. The second limiting structure 600 has a simple structure and is easy to process and assemble. During assembly, simply place the bearing 420 into the assembly channel 201 and ensure one side of the bearing 420 fits against the second step structure, then install and tighten the fastener 610. The operation is convenient. During disassembly, the bearing 420 can also be quickly removed by loosening the fastener 610, facilitating later maintenance or replacement.

[0103] In one embodiment, the outer peripheral wall of the fastener 610 is threadedly connected to the inner wall of the assembly channel 201; and / or,

[0104] The fastener 610 has at least two wrench grooves 611 at the end away from the bearing 420.

[0105] In an embodiment of the present invention, 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 internal threads at a corresponding position. The two are connected detachably through threaded engagement. The self-locking characteristic of the threads ensures that the fastener 610 is not easily loosened during device operation, ensuring stable axial clamping force on the bearing 420. On the other hand, by rotating the fastener 610, its axial position within the assembly channel 201 can be finely adjusted, thereby precisely controlling the clamping force on the bearing 420, avoiding excessive tightness that could damage the bearing 420 or excessive looseness that could lead to fixing failure.

[0106] Reference Figure 10 In an embodiment of the present invention, the end of the fastener 610 away from the bearing 420 is provided with at least two wrench grooves 611. These wrench grooves 611 are evenly or symmetrically distributed along the circumference of the fastener 610. For example, two opposing wrench grooves 611 or three wrench grooves 611 distributed at 120°. The wrench grooves 611 are used to provide a force application point for tools such as wrenches, which facilitates the installation of the fastener 610 and solves the problem of difficulty in disassembling and assembling by hand due to the small size of the fastener 610.

[0107] In one embodiment, the first handle further includes a support sleeve 140. One end of the support sleeve 140 is located between the motor 122 and the first housing 110, and the other end extends into the assembly channel 201 and is fitted over the drive gear 121. The first housing 110 has a wire outlet groove 1102 extending along its own axial direction. The wire 130 is led out from the wire outlet groove 1102 and passes through the assembly channel 201, and is located on the side of the support sleeve 140 away from the drive gear 121. The support sleeve 140 separates the drive gear 121 and the wire 130, avoiding interference between the drive gear 121 and the wire 130, and reducing the risk of damage to the drive gear 121 and the wire 130.

[0108] Combination Figure 1 and Figure 11 The present invention also proposes a connecting assembly for a drilling device, used to connect a first handle and a second handle 700 of the drilling device, comprising:

[0109] Elbow assembly 200, for connecting the second handle 700, has a spaced assembly channel 201 and a snap-fit ​​groove 202. The assembly channel 201 is for passing through the wire 130, and the snap-fit ​​groove 202 is located at the end of the elbow assembly 200 facing the first handle; and

[0110] The connecting sleeve 300 is used to fix the elbow assembly 200 to the first handle. The connecting sleeve 300 is threadedly connected to the first handle. The connecting sleeve 300 is partially disposed in the snap ring groove 202 so that the connecting sleeve 300 can rotate around its own axis and be relatively fixed to the axial position of the elbow assembly 200.

[0111] The connecting component includes an elbow component 200 and a connecting sleeve 300. The specific structures of the elbow component 200 and the connecting sleeve 300 are as described in the above embodiments. Since this connecting component adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0112] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformations made based on the technical concept of the present invention and the contents of the specification and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A grinding and drilling device, characterized in that, include: The first handle includes a first housing and a drive assembly disposed within the first housing; The elbow assembly has a separated assembly channel and a snap ring groove. The drive assembly is partially inserted through the assembly channel, and the snap ring groove is located at the end of the elbow assembly facing the first housing. A wire, extending from the first housing and passing through the assembly channel; and A connecting sleeve is used to fix the elbow assembly to the first housing. The connecting sleeve is threaded to the first housing. The connecting sleeve is partially disposed in the snap ring groove so that the connecting sleeve can rotate around its own axis and be fixed relative to the axial position of the elbow assembly.

2. The grinding and drilling apparatus as described in claim 1, characterized in that, The elbow assembly includes: The elbow body is provided with a first channel; and A locking sleeve is positioned within the elbow body. The end of the locking sleeve that is relatively close to the first housing has a gap with the inner wall of the first channel. The gap forms the snap-fit ​​groove. The locking sleeve has a second channel, which communicates with the first channel to form the assembly channel. The wire passes through the first channel and the second channel.

3. The grinding and drilling apparatus as described in claim 2, characterized in that, The locking sleeve is threadedly connected to the elbow body, and the first channel is provided with a limiting step surface that abuts against the locking sleeve.

4. The grinding and drilling apparatus as described in claim 2, characterized in that, The elbow assembly also includes a positioning structure that connects the locking sleeve and the first housing to prevent the locking sleeve from rotating relative to the first housing.

5. The grinding and drilling apparatus as described in claim 4, characterized in that, The positioning structure includes a cooperating positioning protrusion and a positioning groove. One of the lock sleeve and the first housing is provided with the positioning groove, and the other of the lock sleeve and the first housing is provided with the positioning protrusion. The positioning protrusion is inserted into the positioning groove to prevent the lock sleeve from rotating relative to the first housing.

6. The grinding and drilling apparatus as described in claim 2, characterized in that, The elbow assembly further includes a first limiting structure, which connects the elbow body and the connecting sleeve, or the first limiting structure connects the locking sleeve and the connecting sleeve, to prevent the connecting sleeve from leaving the snap ring groove.

7. The grinding and drilling apparatus as described in claim 6, characterized in that, The first limiting structure includes a first protrusion and a second protrusion. The first protrusion is located at one end of the connecting sleeve that is inserted into the snap ring groove. The second protrusion protrudes from the outer wall of the locking sleeve that is relatively close to the first housing. The end of the second protrusion facing the inside of the snap ring groove abuts against the first protrusion to prevent the connecting sleeve from leaving the snap ring groove.

8. The grinding apparatus as described in any one of claims 2 to 7, characterized in that, The inner wall of the first channel is provided with a first wire guide groove, and the wire is at least partially housed in the first wire guide groove; and / or, The inner wall of the second channel is provided with a second wire guide groove, and the wire is at least partially housed in the second wire guide groove.

9. The grinding and drilling apparatus as described in claim 1, characterized in that, The grinding device also includes a second handle, which is connected to the elbow assembly, and an angle is formed between the axial direction of the first handle and the axial direction of the second handle.

10. A connecting assembly for a drilling device, used for connecting a first handle and a second handle of the drilling device, characterized in that, include: An elbow assembly for connecting to the second handle, the elbow assembly having a spaced-out assembly channel and a snap-fit ​​groove, the assembly channel for threading a wire, and the snap-fit ​​groove being located at the end of the elbow assembly facing the first handle; and A connecting sleeve is used to fix the elbow assembly to the first handle. The connecting sleeve is threaded to the first handle. The connecting sleeve is partially disposed in the snap ring groove so that the connecting sleeve can rotate around its own axis and be fixed relative to the axial position of the elbow assembly.

11. The connecting assembly of the grinding and drilling apparatus as described in claim 10, characterized in that, The elbow assembly includes: Elbow body for connecting the second handle, the elbow body having a first channel; and A locking sleeve is positioned within the elbow body. The end of the locking sleeve closest to the first handle has a gap between it and the inner wall of the first channel. The gap forms the snap-fit ​​groove. The locking sleeve has a second channel, which communicates with the first channel to form the assembly channel. The wire passes through the first channel and the second channel.

12. The connecting assembly of the grinding and drilling apparatus as described in claim 11, characterized in that, The locking sleeve is threadedly connected to the elbow body, and the first channel is provided with a limiting step surface that abuts against the locking sleeve; and / or, The inner wall of the first channel is provided with a first wire guide groove, and the wire is at least partially housed in the first wire guide groove; and / or, The inner wall of the second channel is provided with a second wire guide groove, and the wire is at least partially housed in the second wire guide groove.

13. The connecting assembly of the grinding and drilling apparatus as described in claim 11, characterized in that, The elbow assembly further includes a positioning structure connecting the locking sleeve and the first handle to prevent the locking sleeve from rotating relative to the first handle; and / or, The elbow assembly further includes a first limiting structure, which connects the elbow body and the connecting sleeve, or the first limiting structure connects the locking sleeve and the connecting sleeve, to prevent the connecting sleeve from leaving the snap ring groove.

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