CN215129969U - Self-holding screwdriver - Google Patents
Self-holding screwdriver Download PDFInfo
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- CN215129969U CN215129969U CN202120549816.5U CN202120549816U CN215129969U CN 215129969 U CN215129969 U CN 215129969U CN 202120549816 U CN202120549816 U CN 202120549816U CN 215129969 U CN215129969 U CN 215129969U
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- self
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- sustaining
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- holding head
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Abstract
The utility model provides a self-sustaining bottle opener, include: a screwdriver rod part; the front end of the screwdriver rod part is provided with a cylindrical self-holding head part; the self-holding head comprises a plurality of concave grooves arranged at intervals on the outer side surface of the self-holding head along the circumferential direction of the self-holding head, and the concave grooves penetrate to the front end of the self-holding head; the part of the self-holding head provided with the concave groove comprises a linear section part and a conical section part which are sequentially connected from front to back; the cross sections of the straight line sections are the same in size along the axial direction of the self-supporting head; along the axial direction of the cone section part, the size of the cross section of the cone section part is sequentially increased from front to back; in the cone section portion, adjacent two be the location bellying between the depressed center, be equipped with the locking bellying on the lateral surface of location bellying. The utility model discloses a self-sustaining bottle opener can enough realize snatching the plug screw, can realize locking plug screw again, reduces surgical instruments's use quantity, simplifies the operation step, improves operation efficiency, saves the processing cost.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to a self-sustaining bottle opener.
Background
A driver is one of the most common tools used in spinal surgery, and is commonly used to tighten a plug. In a posterior spinal rod surgery, it is often necessary to use a plug driver, a pre-lock driver, and a final lock driver for the needs of the use. The existing plug screw driver can only be used for holding and taking the screw plug and putting the screw plug into a human body, and in order to have a self-holding function, the common structures of the plug screw driver are a slotted elastic structure and a structure embedded with an elastic sheet, but the structures have insufficient strength and cannot provide enough torque for locking the screw plug. Therefore, the use of a pre-locking driver and a final locking driver is also required to lock the screw plug, which results in more surgical tools, increased cost and complicated operation. How to design a structure capable of grabbing a screw plug and locking the screw plug is a problem to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcoming of prior art, the utility model provides a technical problem lie in providing one kind and can enough snatch the plug screw, can lock the self-sustaining bottle opener of plug screw again.
To achieve the above and other related objects, the present invention provides a self-contained screwdriver, comprising: a screwdriver rod part; the front end of the screwdriver rod part is provided with a cylindrical self-holding head part;
the self-holding head comprises a plurality of recessed grooves arranged at intervals on the outer side surface of the self-holding head along the circumferential direction of the self-holding head, and the recessed grooves penetrate to the front end of the self-holding head;
the part of the self-supporting head provided with the concave groove comprises a linear section part and a conical section part which are sequentially connected from front to back;
the cross sections of the straight line sections are the same in size along the axial direction of the self-supporting head; along the axial direction of the cone section part, the size of the cross section of the cone section part is sequentially increased from front to back;
in the cone section, two adjacent sunken grooves are provided with a positioning lug boss, and the outer side surface of the positioning lug boss is provided with a locking lug boss.
Preferably, the cross section of the part of the self-holding head provided with the concave groove is in a quincunx structure or a star structure.
Furthermore, the outer side surface of the positioning lug boss comprises a left side surface and a right side surface which are connected in sequence; the left side face of the positioning protruding part or the right side face of the positioning protruding part is provided with the locking protruding part.
Furthermore, the diameter of the circumscribed circle of the straight line section part is equal to that of the circumscribed circle of the front end of the cone section part, and the diameter of the circumscribed circle of the straight line section part is smaller than that of the self-holding head part.
Furthermore, when the left side surface of the positioning convex part is provided with a locking convex part, the locking convex part extends leftwards to the adjacent concave groove; when the right side face of the positioning protruding part is provided with the locking protruding part, the locking protruding part extends rightwards to the adjacent concave groove.
As mentioned above, the self-holding screwdriver of the present invention has the following beneficial effects:
when the self-holding screwdriver is used, the structure of the cross section of the linear section part is the same as that of the cross section of the driving hole of the screw plug to be grabbed, the linear section part of the self-holding head is inserted into the driving hole of the screw plug, and the structure of the linear section part ensures that the linear section part is in surface contact with the screw plug instead of line contact in the process of screwing the screw plug, so that the self-holding strength of the self-holding screwdriver is ensured to the maximum extent; along the axial direction of the cone section part, the size of the cross section of the cone section part is sequentially increased from front to back, and the cone section part is of a structure with variable size, so that after the self-holding head part is inserted into the driving hole, the cone section part can be clamped in the driving hole, the self-holding head part achieves the self-holding effect, and the self-holding head part can stably grab the screw plug; the outer side surface of the positioning protruding part is provided with a locking protruding part, when the screw plug is rotated and locked, the locking protruding part can further clamp the self-holding head part and the driving hole of the screw plug, so that the self-holding head part drives the screw plug to have enough torque when the screw plug is locked and rotated; the utility model discloses a self-sustaining bottle opener can enough realize snatching the plug screw, can realize locking plug screw again, reduces surgical instruments's use quantity, simplifies the operation step, improves operation efficiency, saves the processing cost.
Drawings
Fig. 1 is a schematic perspective view of the self-holding screwdriver of the present embodiment.
Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.
Fig. 3 is a schematic perspective view of the self-sustained head of the self-sustained driver of the present embodiment without a linear segment.
Fig. 4 is a schematic view showing the front end structure of the self-sustained head of the self-sustained driver of the present embodiment without the linear section.
Fig. 5 is a schematic structural view showing the self-sustaining head of the self-sustaining screwdriver of this embodiment inserted into the driving hole of the plug screw.
Description of the reference numerals
100 screwdriver rod part
200 self-contained head
210 concave groove
220 straight line segment
230 cone segment
240 positioning lug boss
241 left side surface
242 right side
250 locking boss
Diameter of circumscribed circle of D1 straight line segment
Diameter of circumscribed circle of front end of D2 cone section part
Diameter of D3 self-sustaining head
10 screw plug
11 drive hole
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to the attached drawings. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
As shown in fig. 1 to 5, the self-sustaining driver of the present embodiment includes: a driver shaft portion 100; the front end of the screwdriver rod part 100 is provided with a cylindrical self-holding head part 200;
a plurality of recessed grooves 210 arranged at intervals along the circumferential direction of the self-supporting head 200 on the outer side surface of the self-supporting head 200, the recessed grooves 210 penetrating to the front end of the self-supporting head 200;
the part of the self-sustaining head 200 provided with the concave groove 210 comprises a straight line segment part 220 and a cone segment part 230 which are sequentially connected from front to back; the rear end of the cone section part 230 is connected with the front end of the screwdriver rod part 100, and the front end of the cone section part 230 is connected with the rear end of the linear section part 220;
the linear segments 220 are of the same size in cross-section along the axial direction of the self-sustaining head 200; along the axial direction of the cone section part 230, the size of the cross section of the cone section part 230 increases from front to back;
in the cone section part 230, a positioning convex part 240 is arranged between two adjacent concave grooves 210, and a locking convex part 250 is arranged on the outer side surface of the positioning convex part 240.
When the self-sustaining screwdriver of the embodiment is used, the cross section of the linear section part 220 has the same structure as that of the cross section of the driving hole of the screw plug 10 to be grabbed, the linear section part 220 of the self-sustaining head 200 is inserted into the driving hole of the screw plug 10, and the structure of the linear section part 220 ensures that the linear section part 220 is in surface contact with the screw plug 10 instead of line contact in the process of screwing the screw plug 10, so that the self-sustaining strength of the self-sustaining screwdriver is ensured to the maximum extent; along the axial direction of the cone section part 230, the size of the cross section of the cone section part 230 is sequentially increased from front to back, and the cone section part 230 is of a structure with variable size, so that after the self-holding head 200 is inserted into the driving hole, the cone section part 230 can be clamped in the driving hole, the self-holding head 200 achieves a self-holding effect, and the self-holding head 200 can stably grab the screw plug 10; the outer side surface of the positioning protruding part 240 is provided with a locking protruding part 250, when the screw plug 10 is locked in a rotating mode, the locking protruding part 250 can further clamp the self-holding head part 200 and the driving hole of the screw plug 10, and therefore the self-holding head part 200 can drive the screw plug 10 to have enough torque when the screw plug 10 is locked in a rotating mode.
The utility model discloses a self-sustaining bottle opener can enough realize snatching plug screw 10, can realize locking plug screw 10 again, reduces surgical instruments's use quantity, simplifies the operation steps of performing the operation, improves operation efficiency, sparingly processing cost.
The cross-sectional structure of the driving hole of the screw plug 10 is the same as that of the linear section part 220, and the cross section of the part of the self-holding head 200 provided with the concave groove 210 is of a quincunx structure or a star structure; this configuration facilitates alignment of the linear section 220 with the drive bore of the plug 10. In this embodiment, the cross section of the portion of the self-sustaining head 200 where the concave groove 210 is provided is a quincunx structure; the cross-sectional structure of the driving hole of the plug screw 10 for the self-sustaining head 200 to grasp is quincunx. The straight segment portion 220 of the self-sustaining head 200 may also be inserted into the driving hole of a screw having a quincunx configuration.
In this embodiment, the axial length of the driving hole of the screw plug 10 is greater than the axial length of the linear section 220, and after the linear section 220 is inserted into the driving hole of the screw plug 10, the cone section 230 can be clamped in the driving hole.
The outer side surface of the positioning lug boss 240 comprises a left side surface 241 and a right side surface 242 which are connected in sequence; a locking protrusion 250 is provided on the left side 241 of the positioning protrusion 240 or the right side 242 of the positioning protrusion 240.
When the screw plug 10 is rotated clockwise for locking, the left side 241 of the positioning boss 240 is provided with a locking boss 250; when the screw plug 10 is rotated counterclockwise for locking, the right side 242 of the positioning protrusion 240 is provided with a locking protrusion 250. When the screw plug 10 is rotated clockwise for locking, the left side 241 of the positioning protrusion 240 is provided with the locking protrusion 250, that is, the position of the locking protrusion 250 is opposite to the locking torque, so that the locking protrusion 250 can further clamp the driving hole of the screw plug 10, so that the self-holding head 200 drives the screw plug 10 to have sufficient torque when locked and rotated; because the right side 242 of the positioning protrusion 240 is not provided with the locking protrusion 250, when the screw plug 10 is rotated clockwise for locking, the right side 242 of the positioning protrusion 240 contacts with the driving hole surface of the screw plug 10, which is beneficial for the cone section 230 to drive the screw plug 10 to rotate.
To facilitate the manufacture and use of self-contained head 200, diameter D1 of the circumscribed circle of linear segment 220 is equal to diameter D2 of the circumscribed circle of the forward end of conical segment 230, and diameter D1 of the circumscribed circle of linear segment 220 is less than diameter D3 of self-contained head 200.
When the locking protrusion 250 is disposed on the left side 241 of the positioning protrusion 240, the locking protrusion 250 extends leftwards to the adjacent concave groove 210; when the locking protrusion 250 is provided on the right side 242 of the positioning protrusion 240, the locking protrusion 250 extends rightward into the adjacent recess groove 210. The locking protrusion 250 extends into the adjacent recess groove 210 so that the locking protrusion 250 can be more stably caught in the driving hole of the corresponding plug screw 10. In this embodiment, the locking protrusion 250 extends leftward into the adjacent recess groove 210.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. A self-contained driver, comprising: a driver rod part (100); the front end of the screwdriver rod part (100) is provided with a cylindrical self-holding head part (200);
the self-supporting head comprises a plurality of recessed grooves (210) which are arranged at intervals on the outer side surface of a self-supporting head (200) along the circumferential direction of the self-supporting head (200), wherein the recessed grooves (210) penetrate to the front end of the self-supporting head (200);
the part of the self-supporting head (200) provided with the concave groove (210) comprises a linear section part (220) and a conical section part (230) which are sequentially connected from front to back;
the dimensions of the cross section of the rectilinear segments (220) are identical along the axial direction of the self-sustaining head (200);
the size of the cross section of the cone section part (230) is increased from front to back along the axial direction of the cone section part (230);
in the cone section part (230), a positioning convex part (240) is arranged between two adjacent concave grooves (210), and a locking convex part (250) is arranged on the outer side surface of the positioning convex part (240).
2. A self-sustaining driver according to claim 1, characterized in that: the cross section of the part of the self-holding head (200) provided with the concave groove (210) is of a quincunx structure or a star-shaped structure.
3. A self-sustaining driver according to claim 2, characterized in that: the outer side surface of the positioning lug boss (240) comprises a left side surface (241) and a right side surface (242) which are sequentially connected; the locking bulge part (250) is arranged on the left side surface (241) of the positioning bulge part (240) or the right side surface (242) of the positioning bulge part (240).
4. A self-sustaining driver according to claim 3, characterized in that: the diameter of the circumscribed circle of the straight line section part (220) is equal to that of the circumscribed circle of the front end of the cone section part (230), and the diameter of the circumscribed circle of the straight line section part (220) is smaller than that of the self-sustaining head part (200).
5. A self-sustaining driver according to claim 3, characterized in that:
when a locking convex part (250) is arranged on the left side surface (241) of the positioning convex part (240), the locking convex part (250) extends leftwards to the adjacent concave groove (210);
when the right side face (242) of the positioning convex part (240) is provided with a locking convex part (250), the locking convex part (250) extends rightwards to the adjacent concave groove (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120549816.5U CN215129969U (en) | 2021-03-17 | 2021-03-17 | Self-holding screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120549816.5U CN215129969U (en) | 2021-03-17 | 2021-03-17 | Self-holding screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215129969U true CN215129969U (en) | 2021-12-14 |
Family
ID=79415798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120549816.5U Active CN215129969U (en) | 2021-03-17 | 2021-03-17 | Self-holding screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215129969U (en) |
-
2021
- 2021-03-17 CN CN202120549816.5U patent/CN215129969U/en active Active
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