CN220921571U

CN220921571U - Locking clamp

Info

Publication number: CN220921571U
Application number: CN202321990167.8U
Authority: CN
Inventors: 徐朋标; 孙英志; 周国民
Original assignee: Tianjin Zhengtian Medical Instrument Co Ltd; Beijing Naton Medical Technology Holdings Co Ltd
Current assignee: Tianjin Zhengtian Medical Instrument Co Ltd; Beijing Naton Medical Technology Holdings Co Ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2024-05-10
Anticipated expiration: 2033-07-27

Abstract

The utility model discloses a locking clamp which comprises a clamp main body, a blind rivet and a locking knob, wherein the top surface of the clamp main body is used for placing a part to be processed; one end of the blind rivet is connected with the part to be processed and penetrates into the clamp main body along a first direction perpendicular to the upper surface of the clamp main body; the locking knob is penetrated in the clamp main body along a second direction parallel to the top surface of the clamp main body and can be connected with the other end of the blind rivet, and a clamping structure is arranged on the locking knob; the locking knob can apply a pulling force downwards along the first direction to the blind rivet, so that the part to be processed is driven to move downwards and cling to the top surface of the clamp main body, and the locking knob and the clamp main body are clamped through the clamping structure. The structural design of the locking knob and the blind rivet ensures that the part to be processed is locked on the top surface of the clamp main body, the clamping position is not required to be adjusted for multiple times, and the whole upper surface of the bone plate can be processed at one time; the utility model has simple structure and reliable positioning.

Description

Locking clamp

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a locking clamp.

Background

Anatomic bone plates are various in variety and various in shape, and some bone plates need to be fully milled in the process of machining. The existing clamp can compress tightly the upper surface of the bone plate through the clamping structure during processing, the bone plate with the full milling processing technology is required, the whole upper surface of the bone plate cannot be processed at one time, the clamping position is required to be adjusted for many times, the whole processing time is increased, and the production efficiency is reduced.

Disclosure of utility model

The application aims to provide a locking clamp, which aims to solve the clamping problem of bone fracture plate product processing.

In order to achieve the above purpose, the present application provides the following technical solutions:

A locking clamp comprising:

The top surface of the clamp main body is used for placing a part to be processed;

One end of the blind rivet can be connected with the lower surface of the part to be processed and can penetrate through the clamp main body along a first direction perpendicular to the top surface of the clamp main body;

The locking knob is arranged on the clamp main body in a penetrating manner along a second direction parallel to the top surface of the clamp main body, the locking knob can be connected with the other end of the blind rivet, and a clamping structure is arranged on the locking knob;

When the locking knob rotates towards the locking direction, the locking knob can apply downward pulling force along the first direction to the blind rivet, so that a part to be processed is tightly attached to the top surface of the clamp main body, and the locking knob is tightly clamped with the clamp main body through the clamping structure.

Further, the locking knob includes a knob body for insertion into the clamp body; an eccentric locking hole is formed in the knob main body along the direction parallel to the axis, a connecting hole through which the other end of the blind rivet can pass is formed in the radial direction of the knob main body, and the connecting hole is formed in one side of the eccentric locking hole, which is thinner in wall thickness;

The knob main body is provided with an open slot along the circumferential direction, the eccentric locking holes are communicated with the open slot in pairs, the inner diameter of each connecting hole is larger than or equal to the outer diameter of the other end of the blind rivet, and the width of each open slot is smaller than the outer diameter of the other end of the blind rivet.

Further, one end of the blind rivet is provided with a thread part with external threads, and the thread part is used for being in threaded connection with a part to be processed; the other end of the blind rivet is a nut, and the nut can pass through the clamp main body and the connecting hole to be clamped into the eccentric locking hole.

Still further, the blind rivet further comprises a connecting portion, the connecting portion is connected with the nut and the threaded portion, the diameter of the connecting portion is smaller than the width of the open slot, and the diameter of the second section is larger than the width of the open slot.

Further, the clamping structure comprises a lateral flange connected with the knob main body and a ball plunger arranged on the lateral flange, a plurality of continuous ball grooves are formed in the side wall of the clamp main body, the ball grooves are located on the same concentric circle, when the knob main body of the locking knob penetrates into the clamp main body, the lateral flange is attached to the side wall of the clamp main body, and according to the rotation angle of the locking knob, the ball plunger can be clamped in the ball grooves at the corresponding position of the clamp main body.

Further, the locking knob further comprises a driving head, the driving head is arranged at one end of the knob main body, and when the knob main body penetrates into the clamp main body, the driving head is positioned at the outer side of the clamp main body.

Still further, the driving head is disposed coaxially with the knob body, and the driving head is connectable with an operating tool.

Further, a circle of annular groove is formed in the knob main body along the circumferential direction, a first threaded hole is formed in the clamp main body, the locking clamp further comprises a jackscrew, and the jackscrew is screwed into the annular groove through the first threaded hole.

Further, the upper surface of anchor clamps main part is equipped with the annular boss that is used for supporting the part of waiting to process, a plurality of mounting holes that are used for wearing to establish are seted up to anchor clamps main part in the annular boss.

Further, a plurality of limit posts are arranged on the outer side of the annular boss.

In summary, the utility model has the technical effects and advantages that:

According to the utility model, the part to be processed is connected to the top surface of the clamp main body through the blind rivet, and the blind rivet is driven to move downwards and be locked through the locking mechanism, so that the positioning and locking of the part to be processed are realized, the part to be processed is positioned on the boss, and the processing is convenient; the utility model has simple structure and reliable positioning.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a locking clamp according to an embodiment of the present utility model;

FIG. 2 is a front view of a locking clamp in an embodiment of the utility model;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view B-B of FIG. 2;

FIG. 5 is a schematic view of a locking knob according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a blind rivet according to an embodiment of the present utility model;

fig. 7 is a schematic structural view of a clamp body according to an embodiment of the present utility model.

In the figure: 1. a clamp body; 11. an annular boss; 12. a mounting hole; 13. a first threaded hole; 14. a side round hole; 15. a ball groove; 16. spacing post

2. Pulling nails; 21. a nail body; 211. a connection part; 212. a threaded portion; 22. a nail cap;

3. a locking knob; 31. a knob body; 311. an open slot; 312. eccentric locking holes; 313. a connection hole; 314. an annular groove; 32. a lateral flange; 321. a second threaded hole; 33. a drive head; 34. ball plunger; 341. a spring; 342. a sphere;

4. and (5) jackscrews.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

This embodiment provides a locking clamp, as shown in fig. 1 to 7, which comprises a clamp body 1, a blind rivet 2, and a locking knob 3. Wherein the top surface of the clamp body 1 is used for placing a part to be processed. One end of the blind rivet 2 is connected with the lower surface of the part to be processed and can penetrate into the clamp body 1 along a first direction perpendicular to the top surface of the clamp body 1. The locking knob 3 wears to locate anchor clamps main part 1 along the second direction that is on a parallel with anchor clamps main part 1 top surface, and locking knob 3 can be connected with the other end of blind rivet 2, is equipped with chucking structure on the locking knob 3. When the locking knob 3 rotates in the locking direction, the locking knob 3 can apply downward pulling force along the first direction to the blind rivet 2, so that the part to be processed is tightly attached to the top surface of the clamp body 1, and the locking knob 3 and the clamp body 1 are tightly clamped through the clamping structure.

In this embodiment, the locking knob 3 is a core component of the locking clamp, and as shown in fig. 3 and 5, the locking knob 3 includes a knob body 31, and the knob body 31 is cylindrical and is inserted into the clamp body 1; the knob body 31 is provided with an eccentric locking hole 312 along the direction parallel to the axis, so that the wall thickness of the knob body 31 has a thicker side and a thinner side; the knob body 31 is radially provided with a connecting hole 313 through which the other end of the blind rivet 2 can pass, and the connecting hole 313 is arranged on one side of the eccentric locking hole 312 with a thinner wall thickness, so that the other end of the blind rivet 2 can pass through the connecting hole 313 and then be clamped into the eccentric locking hole 312; the knob main body 31 is provided with an opening groove 311 along the circumferential direction for avoiding the blind rivet 2 after the locking knob 3 rotates; the eccentric locking holes 312, the connection holes 313 and the open grooves 311 are communicated with each other in pairs. In the initial state, the connecting hole 313 of the locking knob 3 is upward, so that the blind rivet 2 can be inserted from the top surface of the clamp body 1 and is arranged in the knob body 31, and at the moment, the side of the knob body 31 with a thinner wall thickness is close to the top surface of the clamp body 1. After the blind rivet 2 is installed in the eccentric locking hole 312, due to the fact that the opening groove 311 is formed in the locking knob 3, when the locking knob 3 is rotated, the blind rivet 2 can avoid the locking knob 3, the locking knob 3 is rotated, one side of the knob main body 31 with a thinner wall thickness is gradually away from the top surface of the clamp main body 1, the other end of the knob main body 31, which drives the blind rivet 2, moves downwards, and further a part to be machined, which is connected with one end of the knob main body 31, is locked on the clamp main body 1.

In this embodiment, as shown in fig. 3 and 6, one end of the blind rivet 2 is a threaded portion 212 provided with external threads, and the threaded portion 212 is used for being in threaded connection with a part to be processed; the other end of the blind rivet 2 is a rivet cap 22, the rivet cap 22 can penetrate through the clamp main body 1, extend into the communication part of the open slot 311 and the eccentric locking hole 312 through the connecting hole 313, and are clamped into the eccentric locking hole 312; the blind rivet 2 further includes a connecting portion 211, the connecting portion 211 connecting the nut 22 and the threaded portion 212; the connecting part 211 is a polished rod part without threads, the locking knob 3 is rotated, the connecting part 211 enters the opening groove 311, and the blind rivet 2 is prevented from rotating along with the locking knob 3.

The diameter of the connection hole 313 is greater than or equal to the outer diameter of the nut 22 to facilitate passage of the nut 22; the width of the open groove 311 is set to be greater than or equal to the outer diameter of the connecting portion 211 and smaller than the outer diameter of the nut 22, which can ensure that the nut 22 does not come out of the open groove 311, while avoiding interference between the open groove 311 and the connecting portion 211 when the locking knob 3 is turned.

Fig. 7 is a schematic structural view of the jig main body 1. The top surface of anchor clamps main part 1 is equipped with irregularly shaped's annular boss 11, and annular boss 11 is used for bearing the part of waiting to process, and the outside of annular boss 11 is equipped with a plurality of spacing posts 16, and the height of spacing post 16 is higher than annular boss 11, plays the location effect of waiting to process the part. The clamp body 1 is also provided with a plurality of mounting holes 12 for penetrating the blind rivet 2, and the mounting holes 12 can be communicated with the connecting holes 313 in the locking knob 3. Thus, the nut 22 of the blind rivet 2 can sequentially pass through the mounting hole 12 and the connecting hole 313 and be clamped into the eccentric locking hole 312.

As shown in fig. 5, the chucking structure in this embodiment includes a lateral flange 32 connected to the knob body 31 and a ball plunger 34 provided on the lateral flange 32. Specifically, the lateral flange 32 is provided with a second threaded hole 321 therethrough, and the ball plunger 34 is screwed into the second threaded hole 321 of the lateral flange 32. As shown in fig. 4, the ball plunger 34 comprises a tubular plug body with a bottom seal and an open top; the ball plunger 34 further comprises a spring 341 and a ball 342, the spring 341 and the ball 342 are arranged in the tubular plug body, and the diameter of the ball 342 is larger than that of the opening; one end of the spring 341 is connected with the sphere 342 and supports the sphere 342 to the opening, and the other end of the spring 341 supports the bottom of the tubular plug body; when the ball 342 is subjected to external pressure, the ball 342 compresses the spring 341, retracting into the interior of the tubular plug body. The tubular plug body is externally threaded and the ball plunger 34 is threadably connected to the lateral flange 32 by external threads.

In other embodiments, the gripping structure may also include lateral flanges 32 and other telescoping structures disposed on lateral flanges 32.

As shown in fig. 7, a side circular hole 14 into which a knob body 31 of the lock knob 3 is inserted and a plurality of ball grooves 15 are provided on the side surface of the clamp body 1, the plurality of ball grooves 15 are circumferentially distributed around the side circular hole 14, and the plurality of ball grooves 15 are located on the same concentric circle. When the knob body 31 of the locking knob 3 is penetrated into the clamp body 1 through the side round hole 14, the lateral flange 32 is attached to the side wall of the clamp body 1, and the movable ball 342 on the ball plunger 34 is just abutted in any ball groove 15 on the side wall of the clamp body 1, so that the circumferential rotation of the locking knob 3 is limited; depending on the angle at which the locking knob 3 is rotated, the ball plunger 34 can be caught in the ball groove 15 at the corresponding position of the clamp body 1. When the locking knob 3 is rotated, the ball 342 is pressed when the ball 342 is positioned between two adjacent ball grooves 15, so that the spring 341 is compressed, and the ball plunger 34 is retracted; when the ball 342 is aligned with the ball groove 15, under the action of the elasticity of the spring 341, the ball 342 stretches out of the ball plunger 34 again and is clamped in the ball groove 15 at the corresponding position of the clamp body 1, so that the locking knob 3 is self-locked.

As shown in fig. 5, the locking knob 3 further comprises a driving head 33 connected with the lateral flange 32, the driving head 33 is coaxially arranged with the knob body 31 and the lateral flange 32, and non-coaxial arrangement between the driving head 33 and the knob body 31 can be selected according to specific situations.

The drive head 33 can be connected to an operating tool, alternatively the cross-sectional shape of the drive head 33 includes, but is not limited to, an external hexagonal, an internal hexagonal, a quincuncial or a triangular shape.

Referring to fig. 3, 5 and 7, a circle of annular grooves 314 are formed in the knob body 31 of the locking knob 3; a first screw hole 13 is provided in the jig main body 1, and the first screw hole 13 penetrates through the top and side round holes 14 of the jig main body 1. The locking clamp further comprises a jackscrew 4, the jackscrew 4 is screwed into the annular groove 314 through the first threaded hole 13, the function of which is to limit the axial movement of the locking knob 3 in the side round hole 14 and allow the circumferential rotation of the locking knob 3.

The working process of the locking clamp of the embodiment is as follows: firstly, screwing the ball plunger 34 into the second threaded hole 321 of the locking knob 3; the locking knob 3 is inserted into the side round hole 14 of the clamp main body 1, the lateral flange 32 is attached to the side wall of the clamp main body 1, and the ball 342 moving in the ball plunger 34 is just abutted in any ball groove 15 on the side wall of the clamp main body 1; screwing the jackscrew 4 into the annular groove 314 through the first threaded hole 13; mounting a blind rivet 2 on the bottom of a part to be processed, placing the part to be processed on the annular boss 11 of the clamp main body 1, enabling the nut 22 of the blind rivet 2 to just pass through the mounting hole 12 and the connecting hole 313 and be clamped into the eccentric locking hole 312; then, the locking knob 3 is rotated, the locking knob 3 applies downward pulling force to the nut 22 to drive the blind rivet 2 and the part to be processed to move downwards together, and according to the rotation angle of the locking knob 3, the ball plunger 34 can be clamped in the ball groove 15 at the corresponding position of the clamp main body 1, so that the locking knob 3 is self-locked; the locking knob 3 is rotated in the opposite direction to the initial position, and the part to be machined can be removed together with the blind rivet 2.

In the embodiment, the blind rivet 2 is connected with the lower surface of the part to be processed, the blind rivet 2 is driven to move downwards by rotating the locking knob 3, so that the part to be processed is locked on the top surface of the clamp main body 1, the upper surface of the part to be processed is completely exposed, the clamping position does not need to be adjusted for many times, the whole upper surface of the part to be processed can be processed at one time, the whole processing time is shortened, and the production efficiency is greatly improved; the utility model has simple structure and reliable positioning.

Finally, it should be noted that: the foregoing description of the preferred embodiments of the present utility model is not intended to be limiting, but rather, it will be apparent to those skilled in the art that the foregoing description of the preferred embodiments of the present utility model can be modified or equivalents can be substituted for some of the features thereof, and any modification, equivalent substitution, improvement or the like that is within the spirit and principles of the present utility model should be included in the scope of the present utility model.

Claims

1. A locking clamp, comprising:

the fixture comprises a fixture main body (1), wherein the top surface of the fixture main body is used for placing a part to be processed;

One end of the blind rivet (2) can be connected with the lower surface of the part to be processed and can penetrate through the clamp main body (1) along a first direction perpendicular to the top surface of the clamp main body (1);

The locking knob (3) is arranged on the clamp main body (1) in a penetrating manner along a second direction parallel to the top surface of the clamp main body (1), the locking knob (3) can be connected with the other end of the blind rivet (2), and a clamping structure is arranged on the locking knob (3);

When the locking knob (3) rotates towards the locking direction, the locking knob (3) can apply downward pulling force along the first direction to the blind rivet (2), so that a part to be processed is tightly attached to the top surface of the clamp main body (1), and the locking knob (3) is tightly clamped with the clamp main body (1) through the clamping structure.

2. The locking clamp according to claim 1, characterized in that the locking knob (3) comprises a knob body (31), the knob body (31) being intended to be inserted into the clamp body (1); an eccentric locking hole (312) is formed in the knob main body (31) along the direction parallel to the axis, a connecting hole (313) through which the other end of the blind rivet (2) can pass is formed in the radial direction of the knob main body (31), and the connecting hole (313) is arranged on one side of the eccentric locking hole (312) with a thinner wall thickness;

The knob body (31) is provided with an opening groove (311) along the circumferential direction, the eccentric locking holes (312), the connecting holes (313) and the opening groove (311) are communicated in pairs, the inner diameter of the connecting holes (313) is larger than or equal to the outer diameter of the other end of the blind rivet (2), and the width of the opening groove (311) is smaller than the outer diameter of the other end of the blind rivet (2).

3. The locking clamp according to claim 2, characterized in that one end of the blind rivet (2) is provided with a threaded portion (212) provided with external threads, the threaded portion (212) being intended to be screwed with a part to be machined; the other end of the blind rivet (2) is provided with a nut (22), and the nut (22) can penetrate through the clamp main body (1) and the connecting hole (313) to be clamped into the eccentric locking hole (312).

4. A locking clamp according to claim 3, characterized in that the blind rivet (2) further comprises a connecting portion (211), the connecting portion (211) connecting the nut (22) and the threaded portion (212), the connecting portion (211) having a diameter smaller than the width of the open slot (311).

5. The locking clamp according to claim 2, characterized in that the clamping structure comprises a lateral flange (32) connected with the knob body (31) and a ball plunger (34) arranged on the lateral flange (32), the side wall of the clamp body (1) is provided with a plurality of continuous ball grooves (15), the ball grooves (15) are positioned on the same concentric circle, when the knob body (31) of the locking knob (3) penetrates into the clamp body (1), the lateral flange (32) is attached to the side wall of the clamp body (1), and the ball plunger (34) can be clamped in the ball groove (15) at the corresponding position of the clamp body (1) according to the rotation angle of the locking knob (3).

6. The locking clamp according to claim 2, characterized in that the locking knob (3) further comprises a driving head (33), the driving head (33) being arranged at one end of the knob body (31), and the driving head (33) being located outside the clamp body (1) when the knob body (31) penetrates into the clamp body (1).

7. The locking clamp according to claim 6, characterized in that the drive head (33) is arranged coaxially with the knob body (31), the drive head (33) being connectable with an operating tool.

8. The locking clamp according to claim 2, characterized in that the knob body (31) is provided with a circle of annular groove (314) along the circumferential direction, the clamp body (1) is provided with a first threaded hole (13), the locking clamp further comprises a jackscrew (4), and the jackscrew (4) is screwed into the annular groove (314) through the first threaded hole (13).

9. The locking clamp according to claim 1, characterized in that an annular boss (11) for supporting a part to be machined is arranged on the upper surface of the clamp main body (1), and a plurality of mounting holes (12) for penetrating the blind rivet (2) are formed in the clamp main body (1) in the annular boss (11).

10. Locking clamp according to claim 9, characterized in that the outer side of the annular boss (11) is provided with a plurality of limit posts (16).