CN211067100U

CN211067100U - Dental force-limiting wrench

Info

Publication number: CN211067100U
Application number: CN201921499849.2U
Authority: CN
Inventors: 杨明博; 王宏灿; 陶欢
Original assignee: Changzhou Sifary Medical Technology Co ltd
Current assignee: Changzhou Sifary Medical Technology Co ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-07-24
Anticipated expiration: 2029-09-10

Abstract

The utility model relates to a dentistry torque wrench, this dentistry torque wrench includes wrench body, the elastic component, the torque piece, pivot and wrench end, wrench body's front end sets up the pivot pilot hole, set up in the wrench body with the communicating mounting hole of pivot pilot hole, set up elastic component and torque piece in the mounting hole, one side of pivot sets up the pivot plane with pivot axial direction parallel, the front end of torque piece sets up the flat-top terminal surface, wrench end's edge sets up a plurality of jaws, the bottom of pivot is passed the pivot pilot hole and is linked to each other with wrench end's central authorities are fixed during the assembly, so that the rotatable setting of pivot is at wrench body's front end, the tail end butt of elastic component and torque piece, the flat-top terminal surface of torque piece front end gets into pivot pilot hole and the laminating of pivot plane, so that the pivot can follow mounting hole axial reciprocating motion along with wrench end when rotating.

Description

Dental force-limiting wrench

Technical Field

The utility model relates to a dentistry auxiliary assembly technical field, especially a dentistry torque wrench.

Background

The traditional dental workshop force limiting wrench is mostly in the form of a sleeve, although the force limiting wrench can achieve the function of completely limiting force, the sleeve needs to be sleeved from the head of a workshop in the process of detaching the workshop or installing the workshop due to different shapes of the workshops of dental equipment, so that the operation is inconvenient.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a dental torque wrench of simple structure, easily dismantlement.

In order to solve the technical problem, the dental torque wrench provided by the utility model comprises a wrench main body, an elastic piece, a torque block, a rotating shaft and a wrench head, the front end of the wrench main body is provided with a rotating shaft assembling hole, the wrench main body is provided with a mounting hole communicated with the rotating shaft assembling hole, an elastic piece and a torsion block are arranged in the mounting hole, a rotating shaft plane parallel to the axial direction of the rotating shaft is arranged on one side of the rotating shaft, the front end of the torsion block is provided with a flat-top end surface, the edge of the wrench head is provided with a plurality of jaws, the bottom end of the rotating shaft passes through the rotating shaft assembling hole to be fixedly connected with the center of the wrench head during assembling, so that the rotatable setting of pivot is at the front end of spanner main part, the tail end butt of elastic component and torsion piece, the flat-topped terminal surface of torsion piece front end gets into pivot pilot hole and the laminating of pivot plane to torsion piece can follow mounting hole axial reciprocating motion when making the pivot rotate along with the spanner head.

Furthermore, the dental torque wrench further comprises a wrench plug for sealing the mounting hole, the elastic element is a spring, and a spring plug is arranged at the front end of the wrench plug, so that when the wrench plug is fixedly arranged at the tail of the mounting hole, the spring plug is inserted into the tail end of the spring.

Further, the outer wall of the wrench plug is provided with external threads along the circumferential direction, and internal threads matched with the external threads are arranged in the mounting hole, so that the wrench plug is in threaded connection with the wrench main body.

Furthermore, a torsion block plug matched with the spring is arranged at the tail end of the torsion block, a torsion block limiting ring table is arranged at the front end of the torsion block, and the outer ring wall of the torsion block limiting ring table is in clearance fit with the inner wall of the mounting hole.

Furthermore, the top end of the rotating shaft is provided with a rotating end cover, and the rotating end cover is arranged in the rotating shaft assembling hole during assembling and is in running fit with the rotating shaft assembling hole.

Further, the bottom of pivot sets up the pivot plug, the cross-section of pivot plug is the polygon, the central authorities of wrench end set up with the spacing through-hole of pivot plug shape looks adaptation, during the assembly the pivot plug passes pivot pilot hole and pegs graft the cooperation with spacing through-hole to make the pivot rotate along with the wrench end.

Furthermore, 4 jaws are uniformly distributed on the edge of the wrench head.

Furthermore, dentistry power wrench still includes the screw, the bottom of pivot plug along the axial set up with the screw of screw looks adaptation, screw and screw thread fit during the assembly for fixed pivot and spanner head.

Furthermore, elastic washers are respectively sleeved on the upper portion and the lower portion of the rotating shaft plug, the elastic washer on the upper portion of the rotating shaft plug is arranged between the rotating shaft plug and the wrench body, and the elastic washer on the lower portion of the rotating shaft plug is arranged between the wrench head and the wrench body.

The technical effects of the utility model are that: (1) compared with the prior art, the dental force-limiting wrench adopts the structure that the torsion block driven by the elastic part is arranged on one side of the rotating shaft, and the plane contact is adopted between the torsion block and the rotating shaft, so that the torsion block moves along the radial direction of the rotating shaft when the rotating shaft rotates, and the elastic part is compressed to generate the pre-tightening torque; (2) one side of the rotating shaft is provided with a rotating shaft plane, and the front end of the torsion block is provided with a flat-top end surface attached to the rotating shaft plane, so that the rotating shaft can drive the torsion block to move when rotating; (3) the wrench head is detachably connected with the rotating shaft, so that the wrench head is convenient to replace and easy to assemble; (4) the wrench head is provided with a plurality of jaws, and the same wrench head can be provided with jaws with different sizes so as to adapt to different application occasions.

Drawings

The invention will be described in further detail with reference to the accompanying drawings:

fig. 1 is an exploded view of the dental torque wrench of the present invention;

FIG. 2 is a schematic cross-sectional view of the dental torque wrench of the present invention;

fig. 3 is a schematic structural diagram of the torque block of the present invention.

In the figure: a wrench plug 1, a spring plug 11, a plug limit ring platform 12, a plug tail ring platform 13,

a spring 2, a torsion block 3, a torsion block plug 31, a spring limit ring platform 32, a torsion block limit ring platform 33, a flat-top end surface 34,

a wrench body 4, an installation cylinder 41, a connector 42, a rotating shaft assembling hole 43, an arc-shaped end 44,

the wrench comprises a wrench head 5, a limit through hole 51, a jaw 52, a screw 6, a rotating shaft 7, a rotating shaft plane 71, a rotating shaft plug 72, an elastic washer 73 and a rotating end cover 74.

Detailed Description

Embodiment 1 as shown in fig. 1 to 2, the dental torque wrench of this embodiment includes a wrench body 4, an elastic member, a torque block 3, a rotating shaft 7 and a wrench head 5, the wrench body 4 includes an installation cylinder 41 and a connector 42 that are integrally formed, the connector 42 is disposed at a front end of the installation cylinder 41, an installation hole is axially disposed in the installation cylinder 41, a rotating shaft assembly hole 43 perpendicular to the installation hole is disposed on the connector 42, a front end of the installation hole is communicated with the rotating shaft assembly hole 43, a front end of the connector 42 is disposed in a circular arc shape to form an arc end 44, and a spring 2 is disposed in the installation hole and serves as the elastic member and the cylindrical torque block 3.

The tail end of the mounting hole is sealed by a wrench plug 1, external threads are arranged on the outer wall of the wrench plug 1 along the circumferential direction, and internal threads matched with the external threads are arranged in the mounting hole, so that the wrench plug 1 is in threaded connection with the wrench main body 4; the tail end of spanner end cap 1 sets up end cap tail end ring platform 13, and the front end of spanner end cap 1 sets up end cap limit ring platform 12, end cap limit ring platform 12 and mounting hole inner wall clearance fit, and the front end of end cap limit ring platform 12 sets up spring plug 11 to when making the fixed afterbody that sets up at the mounting hole of spanner end cap 1, spring plug 1 inserts the tail end setting of spring 2, carries out the axial to spring 2 spacing, and end cap afterbody ring platform 13 seals the mounting hole.

In other embodiments, the wrench end cap 1 and the wrench body 4 may be fixed by providing a side pin, that is, a through hole for a plug pin is radially formed in the wrench body 4, a counter bore for a plug pin is also formed in the wrench end cap 1, and the wrench end cap 1 is fixed by inserting the side pin after being inserted into the mounting hole.

In other embodiments, the wrench plug 1 and the wrench body 4 may be fixed by compressing and deforming the tail end of the mounting hole after assembly, so as to prevent the wrench plug 1 from being separated from the mounting hole.

In other embodiments, the wrench plug 1 and the wrench body 4 may be fixed, or the wrench plug 1 and the mounting hole may be fixed in an interference fit manner.

As shown in fig. 3, the rear end of the torsion block 3 is provided with a torsion block plug 31 adapted to the spring 2 and a spring limit ring 32 for abutting against the spring 2, the front end of the torsion block 3 is provided with a torsion block limit ring 33, and the outer ring wall of the torsion block limit ring 33 is in clearance fit with the inner wall of the mounting hole, so that the torsion block limit ring 33 is in sliding fit with the inner wall of the mounting hole when the torsion block 3 is arranged in the mounting hole, thereby facilitating the movement of the torsion block 3 in the mounting hole.

The top end of the rotating shaft 7 is provided with a rotating end cover 74 matched with the rotating shaft assembling hole 46, the bottom end of the rotating shaft 7 is provided with a rotating shaft plug 72, the section of the rotating shaft plug 72 is square, the center of the wrench head 5 is provided with a square limiting through hole 51 matched with the rotating shaft plug 72 in shape, the rotating shaft plug 72 penetrates through the rotating shaft assembling hole 43 and is in inserting fit with the limiting through hole 51 during assembling, and the rotating end cover 74 is arranged in the rotating shaft assembling hole 43 so that the rotating shaft 7 can rotate along with the wrench head 5; the dental torque wrench further comprises a screw 6, a screw hole matched with the screw 6 is formed in the bottom end of the rotating shaft plug 72 in the axial direction, and the screw 6 is in threaded fit with the screw hole during assembly and used for fixing the rotating shaft 7 and the wrench head 5.

In other embodiments, the cross-section of the shaft plug 72 may also be triangular, and the shape of the limiting through hole 51 is also triangular.

In other embodiments, the cross section of the spindle plug 72 may also be a regular hexagon, and the shape of the limiting through hole 51 is also a regular hexagon matched with the cross section.

4 jaws 52 are uniformly distributed at the edge of the wrench head 5, a flat-top end face 34 is arranged at the front end of the torsion block 3, a rotating shaft plane 71 which is parallel to the axial direction of the rotating shaft 7 is arranged at one side of the rotating shaft 7, during assembly, a rotating shaft plug 72 at the bottom end of the rotating shaft 7 passes through the rotating shaft assembly hole 43 and is inserted into the limiting through hole 51 of the wrench head 5, a rotating end cover 74 is arranged in the rotating shaft assembly hole 43 to limit the rotation of the rotating shaft 7, an elastic gasket 73 at the upper part of the rotating shaft plug 72 is arranged at the upper side of the bottom walls of the rotating shaft plug 72 and the connecting head 42, the elastic gasket 73 at the lower part of the rotating shaft 7 is arranged between the wrench head 5 and the lower side of the bottom wall; the rotating shaft 7 is in clearance fit with the rotating shaft assembling hole 5, so that the rotating shaft 7 is in running fit with the connector 42, the tail end of the spring 2 is abutted against the wrench plug 1, the front end of the spring 2 is abutted against the tail end of the torque block 3, and the flat-top end surface 34 at the front end of the torque block 3 enters the rotating shaft assembling hole 43 and is attached to the rotating shaft plane 71 of the rotating shaft 7, so that the torque block 3 can axially reciprocate along the installation barrel 41 when the rotating shaft 7 rotates along with the wrench head 5.

In other embodiments, the wrench head 5 and the rotating shaft 7 can be fixedly connected by riveting.

In other embodiments, the wrench head 5 and the rotating shaft 7 can also be fixedly connected by welding.

It should be understood that the above examples are only for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And that obvious changes and modifications may be made without departing from the spirit of the invention.

Claims

1. A dental force-limiting wrench, which is characterized by comprising a wrench main body, an elastic piece, a torque block, a rotating shaft and a wrench head, the front end of the wrench main body is provided with a rotating shaft assembling hole, the wrench main body is provided with a mounting hole communicated with the rotating shaft assembling hole, an elastic piece and a torsion block are arranged in the mounting hole, a rotating shaft plane parallel to the axial direction of the rotating shaft is arranged on one side of the rotating shaft, the front end of the torsion block is provided with a flat-top end surface, the edge of the wrench head is provided with a plurality of jaws, the bottom end of the rotating shaft passes through the rotating shaft assembling hole to be fixedly connected with the center of the wrench head during assembling, so that the rotatable setting of pivot is at the front end of spanner main part, the tail end butt of elastic component and torsion piece, the flat-topped terminal surface of torsion piece front end gets into pivot pilot hole and the laminating of pivot plane to torsion piece can follow mounting hole axial reciprocating motion when making the pivot rotate along with the spanner head.

2. The dental torque wrench as claimed in claim 1, further comprising a wrench plug for closing the mounting hole, wherein the elastic member is a spring, and a spring plug is disposed at a front end of the wrench plug, so that when the wrench plug is fixedly disposed at a rear end of the mounting hole, the spring plug is inserted into a rear end of the spring.

3. The dental torque wrench as claimed in claim 2, wherein the wrench plug has an external thread formed on an outer wall thereof along a circumferential direction, and an internal thread fitted to the external thread is formed in the mounting hole, so that the wrench plug is threadedly coupled to the wrench body.

4. A dental torque wrench as claimed in claim 3, wherein the rear end of the torque block is provided with a torque block plug adapted to the spring, the front end of the torque block is provided with a torque block limiting ring platform, and the outer annular wall of the torque block limiting ring platform is in clearance fit with the inner wall of the mounting hole.

5. The dental torque wrench as claimed in claim 4, wherein a rotary end cap is provided at the top end of the shaft, and the rotary end cap is disposed in the shaft mounting hole during assembly.

6. The dental torque wrench as claimed in claim 5, wherein a shaft plug is provided at the bottom end of the shaft, the shaft plug has a polygonal cross-section, a limiting through hole is provided at the center of the wrench head, the shaft plug is inserted into the shaft fitting hole and engaged with the limiting through hole, so that the shaft can rotate with the wrench head.

7. A dental torque wrench as claimed in claim 6, wherein the wrench head has 4 jaws evenly spaced about its periphery.

8. A dental torque wrench as claimed in claim 7, further comprising a screw, wherein the bottom end of the shaft plug is provided with a screw hole axially matching the screw, and the screw is in threaded engagement with the screw hole during assembly for securing the shaft and the wrench head.

9. The dental torque wrench as claimed in claim 8, wherein the upper and lower portions of the shaft plug are respectively sleeved with an elastic washer, the elastic washer on the upper portion of the shaft plug is disposed between the shaft plug and the wrench body, and the elastic washer on the lower portion of the shaft plug is disposed between the wrench head and the wrench body.