CN210414331U

CN210414331U - Torsion screwdriver

Info

Publication number: CN210414331U
Application number: CN201920914831.8U
Authority: CN
Inventors: 农鲁明
Original assignee: Changzhou Second Peoples Hospital
Current assignee: Changzhou Second Peoples Hospital
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2020-04-28
Anticipated expiration: 2029-06-18

Abstract

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a torsion bottle opener. A torsion screwdriver comprises a handle and a screwdriver rod, wherein the screwdriver rod is fixedly arranged on a fixed clutch through a pin, the fixed clutch is fixed in a cavity in the handle in an interference fit mode, a rotating clutch is sleeved on the screwdriver rod, a stop block fixed in the cavity is inserted into U-shaped grooves in two sides of the rotating clutch, the rotating clutch is in contact with the fixed clutch, an adjusting jackscrew and an adjusting and fixing jackscrew are sleeved on the screwdriver rod, threads on the outer sides of the adjusting jackscrew and the adjusting and fixing jackscrew are matched with thread sections on the inner side of the cavity of the handle, a screw hole is formed in the adjusting and fixing jackscrew, an inner hexagonal flat end fastening screw is screwed into the screw hole, the end part of the inner hexagonal flat end fastening screw is in contact with the fixed jackscrew, and a butterfly spring is arranged between the fixing jackscrew and the rotating clutch. The novel torsion-resistant bolt effectively prevents the bolt from being broken due to loosening of the bolt or overlarge torsion value caused by undersize torsion value, and meets the use requirement.

Description

Torsion screwdriver

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a torsion bottle opener.

Background

The original torque screwdriver has many teeth of the tooth part of the fixed clutch, too small tooth space and short plane distance, which causes uneven surface and poor smoothness, causes unstable torque value and poor using effect of the screwdriver, and brings inconvenience to the operation.

If the torque is too large, the screw in the operation process can be screwed down or broken, so that operation accidents occur, and if the torque is too small, the implant can not be completely locked, and the situation of untightening can occur, so that the normal operation of the operation is influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the existing screw driver, the utility model provides a torsion screw driver.

The utility model provides a technical scheme that its technical problem adopted is: a torsion screwdriver comprises a handle and a screwdriver rod, wherein the screwdriver rod is fixedly arranged on a fixed clutch through a pin, the fixed clutch is fixed in a cavity in the handle in an interference fit mode, a rotating clutch is sleeved on the screwdriver rod, a stop block fixed in the cavity is inserted into U-shaped grooves in two sides of the rotating clutch, the rotating clutch is in contact with the fixed clutch, an adjusting jackscrew and an adjusting and fixing jackscrew are sleeved on the screwdriver rod, threads on the outer sides of the adjusting jackscrew and the adjusting and fixing jackscrew are matched with thread sections on the inner side of the cavity of the handle, a screw hole is formed in the adjusting and fixing jackscrew, an inner hexagonal flat end fastening screw is screwed into the screw hole, the end part of the inner hexagonal flat end fastening screw is in contact with the fixed jackscrew, a butterfly spring is arranged between the fixing jackscrew and the rotating clutch, and a handle cap is screwed into the thread section on the inner side.

According to another embodiment of the utility model, further include that there is a plastic ring in the mounting groove of the inboard of handle cap, and the plastic ring overlaps on the screwdriver pole.

According to another embodiment of the present invention, further comprising that the step-like structure of the inner side of the handle cap is provided with a first O-ring at a position contacting with the threaded section of the handle.

According to another embodiment of the present invention, further comprising a second O-ring in the mounting groove of the inner side of the handle cap, the second O-ring is sleeved on the screwdriver rod.

According to another embodiment of the present invention, further comprising, the number of rotating clutch teeth: fixed clutch teeth number =1: 2.

According to another embodiment of the present invention, it is further included that the number of teeth of the rotating clutch is 3.

According to another embodiment of the present invention, further comprising a base inserted into the cavity of the handle, the stationary clutch contacts the base.

The beneficial effects of the utility model are that, this kind of torsion bottle opener when using, can be through the size of the torsion value of the whole torsion bottle opener of position adjustment of adjusting the jackscrew to this torsion bottle opener torsion value is steady when using, prevents effectively because the screw that the torsion value undersize arouses is not hard up or the too big screw fracture that leads to of torsion value, practices thrift operation time, improves operation efficiency.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of a stationary clutch according to the present invention;

fig. 3 is a schematic structural view of a rotation clutch according to the present invention;

in the figure, the handle 1, the handle 2, the base 3, the fixed clutch 4, the belleville spring 5, the adjusting jackscrew 6, the adjusting fixed jackscrew 7, the handle cap 8, the screwdriver rod 9, the O-shaped ring I, the inner hexagonal flat end set screw 10, the ring II 0, the ring II 12, the pin 13, the plastic ring 14, the stop dog 15 and the rotating clutch are shown.

Detailed Description

As shown in fig. 1-3, which is a schematic structural diagram of the present invention, a torque screwdriver comprises a handle 1 and a screwdriver rod 8, the screwdriver rod 8 is fixedly mounted on a fixed clutch 3 through a pin 12, the fixed clutch 3 is fixed in a cavity in the handle 1 through an interference fit manner, the screwdriver rod 8 is sleeved with a rotating clutch 15, a stopper 14 fixed in the cavity is inserted into a U-shaped groove at both sides of the rotating clutch 15, the rotating clutch 15 is in contact with the fixed clutch 3, the screwdriver rod 8 is sleeved with an adjusting jackscrew 5 and an adjusting fixed jackscrew 6, the adjusting jackscrew 5 and the adjusting fixed jackscrew 6 have outer threads matched with thread sections at the inner side of the cavity of the handle 1, the adjusting fixed jackscrew 6 has a screw hole, an inner hexagonal flat end fastening screw 10 is screwed into the screw hole, the end of the inner hexagonal flat end fastening screw 10 is in contact with the fixed jackscrew 6, a butterfly spring 4 is mounted between the fixed jackscrew 6 and the rotating clutch 15, a handle cap 7 is screwed on the thread section at the inner side of the end part of the handle 1.

When the torque screwdriver is assembled, firstly, a fixed clutch 3 provided with a screwdriver rod 8 is installed, then a disc spring 4 is sleeved on the screwdriver rod 8, an adjusting jackscrew 5 is sleeved on the screwdriver rod 8 and screwed into a thread section in a cavity of a handle 1, the depth of the adjusting jackscrew 5 is adjusted through the experience of medical personnel, the depth of the adjusting jackscrew 5 determines the elastic force of the disc spring 4, the size of a torque value is determined when the torque screwdriver is used, after the position of the adjusting jackscrew 5 is determined, an adjusting fixed jackscrew 6 is sleeved on the screwdriver rod 8 and then screwed into the thread section, the adjusting fixed jackscrew 6 is contacted with the fixed jackscrew 5, then an inner hexagonal flat end fastening screw 10 is screwed into a screw hole on the adjusting fixed jackscrew 6, and the continuously screwed inner hexagonal flat end fastening screw 10 contacts the end of the inner hexagonal flat end fastening screw 10 with the fixed jackscrew 5, the better locking ability is provided, the fixed jackscrew 5 is prevented from rotating, the torsion value is improved, the offset cannot occur in use, and finally, the assembly can be completed after the handle cap 7 is screwed in.

The width of the U-shaped groove at the two sides of the adjusting and fixing jackscrew 6 is larger than that of the stop block 14, when the adjusting and fixing jackscrew 6 is used, the adjusting and fixing jackscrew 6 can be ejected rightwards after the torsion value exceeds the limit value, and the situation that the screw is broken due to overlarge torsion is avoided.

According to another embodiment of the present invention, further comprising a plastic ring 13 in the mounting groove of the inner side of the handle cap 7, the plastic ring 13 is sleeved on the screwdriver rod 8.

According to another embodiment of the present invention, it further comprises that an O-ring 9 is installed at a position where the step-like structure of the inner side of the handle cap 7 contacts with the threaded section of the handle 1.

According to another embodiment of the present invention, further comprising a second O-ring 11 disposed in the mounting groove of the inner side of the handle cap 7, the second O-ring 11 is sleeved on the screwdriver rod 8.

The O-shaped ring I9 and the O-shaped ring II 11 are used as sealing ring structures and are attached to the joint between the handle 1, the handle cap 7 and the screwdriver rod 8, so that good sealing performance is provided, the use requirements are met,

According to another embodiment of the present invention, further comprising, the number of teeth of the rotating clutch 15: fixed clutch 3 teeth count =1: 2.

According to another embodiment of the present invention, it is further included that the number of teeth of the rotating clutch 15 is 3.

Reduce 3 tooth counts of fixed clutch, increase the plane distance, change the spare department of the 15 tooth counts of rotating clutch simultaneously and change into the plane, the tooth height reduces, and the tooth number proportion changes the 15 tooth counts of rotating clutch: fixed clutch 3 teeth count =1: 2. When the screwdriver moves, the tooth tip of the rotating clutch 15 moves on the plane of the fixed clutch 3; when the rotating clutch 15 is at rest, the plane of the rotating clutch is in contact with the plane of the fixed clutch 3, and the stability of the torque force value is effectively controlled.

According to another embodiment of the present invention, further comprising a base 2 inserted into the cavity of the handle 1, and a stationary clutch 3 contacting the base 2.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A torsion screwdriver comprises a handle (1) and a screwdriver rod (8), and is characterized in that the screwdriver rod (8) is fixedly arranged on a fixed clutch (3) through a pin (12), the fixed clutch (3) is fixed in a cavity in the handle (1) in an interference fit mode, a rotating clutch (15) is sleeved on the screwdriver rod (8), a stop block (14) fixed in the cavity is inserted into a U-shaped groove at two sides of the rotating clutch (15), the rotating clutch (15) is in contact with the fixed clutch (3), an adjusting jackscrew (5) and an adjusting fixed jackscrew (6) are sleeved on the screwdriver rod (8), threads are arranged on the outer sides of the adjusting jackscrew (5) and the adjusting fixed jackscrew (6) and are matched with thread sections on the inner side of the cavity of the handle (1), a screw hole is arranged on the adjusting fixed jackscrew (6), an inner hexagonal flat-end tightening screw (10) is screwed into the screw hole, the end part of the inner hexagonal flat end set screw (10) is contacted with a fixed jackscrew (6), a belleville spring (4) is arranged between the fixed jackscrew (6) and a rotating clutch (15), and a handle cap (7) is screwed in the thread section on the inner side of the end part of the handle (1).

2. The torque driver as claimed in claim 1, characterized in that the mounting groove at the inner side of the handle cap (7) is provided with a plastic ring (13), and the plastic ring (13) is sleeved on the driver rod (8).

3. The torque driver as claimed in claim 1, characterized in that the step-like structure of the inside of the handle cap (7) is fitted with a first O-ring (9) at the position where it contacts the threaded section of the handle (1).

4. The torque driver as claimed in claim 1, wherein the inside of the handle cap (7) is provided with a second O-ring (11), and the second O-ring (11) is sleeved on the driver rod (8).

5. The torque driver according to claim 1, wherein the rotation clutch (15) has the following number of teeth: the number of teeth of the stationary clutch (3) is =1: 2.

6. The torque driver according to claim 1, wherein the number of teeth of the rotation clutch (15) is 3.

7. The torque driver according to claim 1, characterized in that the base (2) is inserted into the cavity of the handle (1), and the stationary clutch (3) is in contact with the base (2).