CN219354061U - Connection structure of bracing piece and joint and grinding bit for operation - Google Patents

Connection structure of bracing piece and joint and grinding bit for operation Download PDF

Info

Publication number
CN219354061U
CN219354061U CN202320092657.XU CN202320092657U CN219354061U CN 219354061 U CN219354061 U CN 219354061U CN 202320092657 U CN202320092657 U CN 202320092657U CN 219354061 U CN219354061 U CN 219354061U
Authority
CN
China
Prior art keywords
supporting rod
support rod
joint
connecting part
connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202320092657.XU
Other languages
Chinese (zh)
Inventor
郭毅军
黄伟
罗杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Xishan Science and Technology Co Ltd
Original Assignee
Chongqing Xishan Science and Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Xishan Science and Technology Co Ltd filed Critical Chongqing Xishan Science and Technology Co Ltd
Priority to CN202320092657.XU priority Critical patent/CN219354061U/en
Application granted granted Critical
Publication of CN219354061U publication Critical patent/CN219354061U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

The utility model provides a connection structure of a support rod and a joint and a grinding bit for operation, and belongs to the field of medical instruments. The connecting device comprises a connecting part arranged on a supporting rod and a connecting hole arranged on a joint, wherein the cross section size of the connecting part is larger than that of the supporting rod in the radial direction of the supporting rod, and the connecting part is connected with the connecting hole in an interference fit manner. The strength and stability of the interference fit connection are far higher than those of glue adhesion, and the connection strength and connection reliability between the support rod and the joint are improved. Meanwhile, the cross section size of the connecting part is larger than that of the supporting rod in the radial direction of the supporting rod, and the strength of the connecting part is larger than that of the rest positions of the supporting rod in the length direction of the supporting rod, so that interference fit connection can be realized through the connecting part and the connecting hole in a pressing riveting mode and the like, the diameter of the whole supporting rod is not required to be increased, and the whole weight of the grinding bit is reduced.

Description

Connection structure of bracing piece and joint and grinding bit for operation
Technical Field
The utility model belongs to the field of medical appliances, and particularly relates to a connecting structure of a supporting rod and a joint and a grinding bit for operation.
Background
In medical surgery, a grinding tool is generally used to grind bone tissue in vivo, for example, to grind bone tissue lesions in minimally invasive otology surgery, skull base surgery, spinal surgery, and the like. Conventional abrasive drilling tools include abrasive drilling handles and abrasive drill bits. The grinding bit comprises a joint, a supporting tube and a bit body penetrating through the supporting tube, wherein the supporting tube is connected to the joint and plays a supporting role on the bit body.
In order to reduce the overall weight of the grinding tool, the joint is usually made of aluminum alloy, and the support rod is usually made of medical grade stainless steel because the support rod enters the human body, so that the support rod and the joint are difficult to be connected by welding. Therefore, the current support rods are usually directly inserted into the connectors and then bonded by means of glue or the like. The strength of glue bonding is generally lower and the reliability is poor due to the characteristics of the cured glue such as short service life, and the like, so that the glue bonding is easy to fail in the using process of the grinding bit, and the condition of loose connection and even separation between the support rod and the interface occurs. The connection between the support rod and the interface is loose, so that abnormal vibration of the grinding bit can occur in working engineering, and operation is affected. The connection and separation between the support rod and the interface can affect the operation safety, and safety risks exist.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a connection structure of a support rod and a joint, and a surgical abrasive drill, which are used for solving the problems of low strength, poor reliability, etc. at the connection point of the support rod and the joint in the prior art.
To achieve the above and other related objects, the present utility model provides a connection structure of a support rod and a joint, including a connection portion sleeved on the support rod, the connection portion being fixedly connected with the support rod, and a connection hole provided on the joint, the connection portion being connected with the connection hole in an interference fit manner.
Optionally, the connection portion and the connection hole are all disposed along a length direction of the support rod.
Optionally, the connecting portion and the connecting hole are both cylindrical.
Optionally, the connection part and the support rod are coaxially arranged.
Optionally, the interference between the connecting part and the connecting hole is 0.01 mm-0.03 mm.
Optionally, the connecting part is in a ring sleeve shape, and the connecting part is fixedly sleeved on the supporting rod.
Optionally, the connecting part is welded with the supporting rod.
Optionally, the edge of the connecting portion facing the end face of one end of the connecting hole is rounded.
Optionally, the connecting hole has a bottom surface, and the bottom surface limits the depth of the connecting portion entering the connecting hole.
The utility model also provides a surgical grinding bit which comprises a bit, a support rod and a joint, wherein the bit is arranged in the support rod in a penetrating way, and the support rod and the joint are connected through the connection structure of the support rod and the joint.
As described above, the connecting structure of the support rod and the joint and the surgical grinding and drilling tool have the following beneficial effects: because the connection structure includes the connecting portion of overcoat on the bracing piece to and set up the connecting hole on the joint, and interference fit connects between connecting portion and the connecting hole. Therefore, the support rod is in interference fit connection with the joint. The strength of interference fit connection can be adjusted through adjusting the interference between the connecting part and the connecting hole, the strength and the stability of the interference fit connection are far higher than those of glue adhesion, and the connection strength and the connection reliability between the support rod and the connector are improved. Meanwhile, as the connecting part is sleeved on the supporting rod, the strength of the supporting rod at the connecting part is greater than the strength of the rest positions of the supporting rod in the axial direction of the supporting rod, so that the strength of the supporting rod at the connecting part meets the strength requirement of interference fit connection realized in a press riveting mode and the like, the strength of the whole supporting rod is not required to be increased, and the whole weight of the grinding bit is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of a surgical abrasive drill according to an embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of a joint according to an embodiment of the present utility model;
fig. 3 is a schematic cross-sectional view of a support tube and a connection portion according to an embodiment of the present utility model.
Reference numerals illustrate: joint 1, stay tube 2, connecting hole 3, connecting portion 4.
Detailed Description
Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.
Please refer to fig. 1 to 3. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.
As shown in fig. 1 to 3, the present utility model provides a connection structure of a support rod 2 and a connector 1 of a grinding bit, which is used for connecting the support rod 2 and the connector 1 of the grinding bit. The connection structure includes connecting portion 4 and connecting hole 3, and connecting hole 3 sets up on joint 1, and connecting portion 4 overcoat is on bracing piece 2, connecting portion 4 and bracing piece 2 fixed connection. The connecting part 4 is connected with the connecting hole 3 in an interference fit way.
The support rod 2 is connected with the joint 1 through the connecting part 4 and the connecting hole 3 in an interference fit manner. The strength of the interference fit connection can be adjusted by adjusting the interference, the strength and stability of the interference fit connection are far higher than those of glue adhesion, and the connection strength and reliability between the support rod 2 and the joint 1 are improved. Meanwhile, the connecting part 4 is sleeved on the supporting rod 2. Therefore, in the axial direction of the support rod 2, the strength of the support rod 2 at the connecting part 4 is greater than the strength of the rest positions of the support rod 2, so that the strength of the support rod 2 at the connecting part 4 meets the strength requirement of interference fit connection realized by pressing riveting and the like, the strength of the whole support rod 2 is not required to be increased, and the whole weight of the grinding bit is reduced.
In some embodiments, the connection holes 3 are arranged in the axial direction of the joint 1, and in other embodiments, the connection holes 3 are arranged in the radial direction of the joint 1. The connecting part 4 is clamped into the connecting hole 3 along the arrangement direction of the connecting hole 3 until the axis of the supporting rod 2 is aligned with the position where the axis of the drill bit is located after the grinding bit is assembled and installed. Since the installation direction of the connection portion 4 and the connection hole 3 intersects with or is perpendicular to the longitudinal direction of the support rod 2, the connection strength between the connection portion 4 and the connection hole 3 is high in the longitudinal direction of the support rod 2.
In the present embodiment, the connection hole 3 is provided in the axial direction of the joint 1 (i.e., the axial direction of the support rod 2). The connecting part 4 enters the connecting hole 3 along the axial direction of the supporting rod 2 and is connected with the connecting hole 3 in an interference fit manner. Since the connection portion 4 and the connection hole 3 are both provided along the axial direction of the support rod 2, the connection portion 4 is inserted into the connection hole 3 along the axial direction of the support rod 2 when the support rod 2 is connected to the joint 1. In the axial direction of the support rod 2, the support rod 2 has high strength and is not easy to deform, and the insertion of the connecting part 4 is facilitated.
Specifically, in this embodiment, the connecting portion 4 and the connecting hole 3 are both cylindrical, which is easy to process, and can obtain higher processing precision under the same process conditions, which is beneficial to improving the assembly precision between the support rod 2 and the drill bit.
In some embodiments, a space exists between the axis of the connecting portion 4 and the axis of the supporting rod 2, and when the connecting portion 4 is inserted into the connecting hole 3, the axis of the supporting rod 2 needs to be aligned with the rotation axis of the drill bit for assembly, so that the supporting rod 2 can be prevented from being forced to rotate. In this embodiment, the connection portion 4 and the support rod 2 are coaxially arranged, that is, the axis of the support rod 2, the axis of the connection portion 4 and the rotation axis of the drill bit are collinear, and when the connection portion 4 is assembled to the connection hole 3, the position accuracy among the connection portion 4, the connection hole 3 and the support rod 2 is ensured by means of the machining accuracy of the connection portion 4, the connection hole 3 and the support rod 2, and the connection process of the connection portion 4 and the connection hole 3 is not required to be adjusted, so that the assembly process is simplified, the coaxiality between the axis of the drill bit and the axis of the support rod 2 is improved, and the vibration of the drill bit during rotation is reduced.
The larger the interference between the connecting part 4 and the connecting hole 3 is, the higher the connection strength between the connecting part 4 and the connecting hole 3 is after the connecting part 4 is connected with the connecting hole 3 in an interference fit mode, but the higher the assembly difficulty between the connecting part 4 and the connecting hole 3 is. Therefore, the interference between the connecting portion 4 and the connecting hole 3 can be reasonably selected according to practical situations. In some embodiments, the interference between the connection portion 4 and the connection hole 3 is 0.01mm to 0.03mm.
In this embodiment, the interference between the connecting portion 4 and the connecting hole 3 is 0.01mm to 0.02mm.
In some embodiments, the connection portion 4 is integrally formed with the support rod 2, and no assembly is required, so that the relative position accuracy between the connection portion 4 and the support rod 2 is improved, but the processing difficulty is high.
As shown in fig. 3, in this embodiment, the connection portion 4 is in a ring shape, and the connection portion 4 is fixedly sleeved on the support rod 2. The supporting rod 2 and the connecting part 4 are respectively processed, so that the processing difficulty of the supporting rod 2 and the connecting part 4 is reduced, the production efficiency is improved, and the processing cost is reduced. In some embodiments, the connection portion 4 and the support rod 2 may be fixedly connected by bolts, riveting, interference fit, or the like, and in this embodiment, the connection portion 4 and the support rod 2 are welded. Specifically, in this embodiment, laser welding is adopted between the connecting portion 4 and the support rod 2, so that the laser welding speed is high, the deformation is small, and the method is suitable for precision welding of micro and small parts.
In this embodiment, the edge of the connecting portion 4 facing the end face of one end of the connecting hole 3 is rounded. The rounded corners can reduce stress concentration at the end edges of the connecting portions 4. Meanwhile, when the connecting part 4 enters the connecting hole 3, the connecting part 4 can be guided by the round corners, and the assembly of the connecting part 4 and the connecting hole 3 is facilitated.
Specifically, as shown in fig. 2, the connecting hole 3 in this embodiment has a bottom surface, and the bottom surface limits the depth of the connecting portion 4 entering the connecting hole 3. The bottom surface can retrain the degree of depth that connecting portion 4 got into in the connecting hole 3, and then retrain the length that bracing piece 2 exposes and connect 1, guarantees the bracing piece 2 in the relative position relation of length direction and joint 1. In this embodiment, the length of the connection portion 4 in the length direction of the support rod 2 is the same as the depth of the connection hole 3, and after the connection portion 4 enters the connection hole 3, the end surface of the connection portion 4 contacts the bottom surface of the connection hole 3, and the connection portion 4 completely enters the connection hole 3.
The embodiment also provides a grinding bit for operation, which comprises a bit, a supporting rod 2 and a connector 1, wherein the bit is arranged in the supporting rod 2 in a penetrating way, and the supporting rod 2 and the connector 1 are connected through the connecting structure of the grinding bit supporting rod 2 and the connector 1. Specifically, the support rod 2 is connected in the connecting hole 3 of the joint 1 through the interference fit of the connecting part 4, so that the connection between the support rod 2 and the joint 1 is realized.
In summary, the connection structure and the surgical grinding tool of the present embodiment have the following beneficial effects: since the connecting structure comprises the connecting part 4 arranged on the supporting rod 2 and the connecting hole 3 arranged on the joint 1, the connecting part 4 is connected with the connecting hole 3 in an interference fit way. Therefore, the support rod 2 and the joint 1 are in interference fit connection. The strength of the interference fit connection can be adjusted by adjusting the interference between the connecting part 4 and the connecting hole 3, the strength and stability of the interference fit connection are far higher than those of glue adhesion, and the connection strength and connection reliability between the support rod 2 and the joint 1 are improved. Meanwhile, as the connecting part 4 is sleeved on the supporting rod 2, the strength of the supporting rod 2 at the connecting part 4 is greater than the strength of the rest positions of the supporting rod 2 in the axial direction of the supporting rod 2, so that the strength of the supporting rod 2 at the connecting part 4 meets the strength requirement of interference fit connection through press riveting and other modes, the strength of the whole supporting rod 2 is not required to be increased, and the whole weight of a grinding bit is reduced.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (10)

1. A connection structure of bracing piece and joint, its characterized in that: the connecting part is sleeved on the supporting rod, the connecting part is fixedly connected with the supporting rod, the connecting hole is formed in the joint, and the connecting part is connected with the connecting hole in an interference fit mode.
2. The connection structure of the support rod and the joint according to claim 1, wherein: the connecting portions and the connecting holes are all arranged along the axial direction of the supporting rod.
3. The connection structure of the support rod and the joint according to claim 1, wherein: the connecting portions and the connecting holes are all cylindrical.
4. A connection structure of a support rod and a joint according to claim 3, wherein: the connecting part and the supporting rod are coaxially arranged.
5. The connection structure of the support rod and the joint according to claim 1, wherein: the interference between the connecting part and the connecting hole is 0.01-0.03 mm.
6. The connection structure of the support rod and the joint according to claim 1, wherein: the connecting part is in a ring sleeve shape, and is fixedly sleeved on the supporting rod.
7. The connection structure of the support rod and the joint according to claim 6, wherein: the connecting part is welded with the supporting rod.
8. The connection structure of the support rod and the joint according to claim 1, wherein: the edge of the connecting part facing to the end face of one end of the connecting hole is a round angle.
9. The connection structure of the support rod and the joint according to claim 1, wherein: the connecting hole is provided with a bottom surface, and the bottom surface limits the depth of the connecting part entering the connecting hole.
10. A surgical abrasive drill bit, characterized in that: the drill bit comprises a drill bit body, a supporting rod and a joint, wherein the drill bit body is arranged in the supporting rod in a penetrating mode, and the supporting rod and the joint are connected through the connecting structure of the supporting rod and the joint according to any one of claims 1-9.
CN202320092657.XU 2023-01-31 2023-01-31 Connection structure of bracing piece and joint and grinding bit for operation Active CN219354061U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320092657.XU CN219354061U (en) 2023-01-31 2023-01-31 Connection structure of bracing piece and joint and grinding bit for operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320092657.XU CN219354061U (en) 2023-01-31 2023-01-31 Connection structure of bracing piece and joint and grinding bit for operation

Publications (1)

Publication Number Publication Date
CN219354061U true CN219354061U (en) 2023-07-18

Family

ID=87153145

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320092657.XU Active CN219354061U (en) 2023-01-31 2023-01-31 Connection structure of bracing piece and joint and grinding bit for operation

Country Status (1)

Country Link
CN (1) CN219354061U (en)

Similar Documents

Publication Publication Date Title
US6561983B2 (en) Attachments of components of ultrasonic blades or waveguides
EP1441650A1 (en) Drive shaft coupling and flexible surgical reamer
CN105596038B (en) Medical work sheath component and connector
CN219354061U (en) Connection structure of bracing piece and joint and grinding bit for operation
CN106103980B (en) The blade root of wind turbine blade is directly or indirectly attached to the casing of turbine hub
CN106150395B (en) Boring by percussion drilling tool
CN217413032U (en) Hollow tapered roller
CN208528923U (en) Collet housing and inner propping collet
CN113662628B (en) Tool bit device with energy gathering characteristic and ultrasonic surgical instrument
CN205918371U (en) Impacted style tapering threaded connection rock drilling brazing tool
CN206122534U (en) Punch press that floats and connect and use this unsteady joint
CN205918370U (en) Impacted style rock drilling brazing tool
CN108775251B (en) Anchor cable pressure relief device
CN107639401A (en) The integral type of a kind of bearing and hole back-up ring assembles device
CN213129769U (en) Medical ultrasonic bone knife
CN220089573U (en) Milling mobile phone with segmented spindle
CN106089116A (en) Impact type compound thread connects drill rod
CN214815126U (en) Forming cutter with central drill
CN214768674U (en) Punch convenient to install
CN213684651U (en) Pump with improved coupling structure
CN209996420U (en) lengthening skull drill bit
CN213129768U (en) Ultrasonic bone knife
CN218613016U (en) Inner-cooling type outer-expansion hydraulic knife handle
CN112302988A (en) Pump with improved coupling structure
CN213888848U (en) Battery welding noise reduction device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant