CN214237946U

CN214237946U - Shaft sleeve anti-loosening electric wrench

Info

Publication number: CN214237946U
Application number: CN202023138267.7U
Authority: CN
Inventors: 高军利; 黄建平
Original assignee: Jiangsu Dayi M&e Tools Co ltd
Current assignee: Jiangsu Dartek Technology Co Ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-09-21
Anticipated expiration: 2030-12-24

Abstract

The utility model discloses an anti-loosening electric wrench for shaft sleeve, including head shell, axle sleeve and gland, seted up on the head shell and held the chamber, it is provided with the bulge loop to hold the intracavity, be provided with the concave ring that begins axial extension by the tip on the axle sleeve, the axle sleeve sets up and is holding the intracavity, just the concave ring sets up in the bulge loop, the gland screw thread sets up at the accent that holds the chamber, and supports and lean on the terminal surface of axle sleeve. The axial and radial positions of the shaft sleeve can be stabilized, machine faults caused by loosening of the shaft sleeve are avoided, and the structure is simple and convenient to maintain.

Description

Shaft sleeve anti-loosening electric wrench

Technical Field

The utility model relates to an electric tool, concretely relates to axle sleeve locking taking off electric spanner.

Background

An electric wrench is an electric tool for tightening a high-strength bolt, and can be used for tightening and loosening the bolt and a nut. Generally, an electric wrench includes an output shaft extending out of a housing for connecting a working member and providing a torque force to the working member; a shaft sleeve is arranged between the output shaft and the shell, and the shell and the shaft sleeve are fixed through press fitting and interference fit. However, an excessive interference causes damage to parts such as the sleeve during press-fitting; and less magnitude of interference then can be because of casing thermal expansion and radial load effect, be difficult to guarantee the cooperation quality in casing shaft hole, so cause electric spanner during operation that the axle sleeve pine takes off and phenomenon such as axial displacement appear easily to electric spanner's life has been reduced. Therefore, how to keep the fixation between the casing and the shaft sleeve and improve the service life of the electric wrench is a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an axle sleeve locking release electric spanner, its axial and radial position that can stabilize the axle sleeve has avoided the axle sleeve pine to take off the machine trouble that comes, and simple structure, the maintenance of being convenient for.

In order to solve the technical problem, the utility model provides an anti-loosening electric wrench for shaft sleeve, including head shell, axle sleeve and gland, seted up on the head shell and held the chamber, it is provided with the bulge loop to hold the intracavity, be provided with the concave ring that begins axial extension by the tip on the axle sleeve, the axle sleeve sets up and is holding the intracavity, just the concave ring sets up in the bulge loop, the gland screw thread sets up and is holding the accent in chamber, and supports and lean on the terminal surface at the axle sleeve.

Preferably, the periphery of the gland is provided with an external thread, the cavity opening of the accommodating cavity is provided with an internal thread matched with the external thread, the diameter of the internal thread is not less than that of the shaft sleeve, and the depth of the internal thread is deeper than the end surface depth of the shaft sleeve.

Preferably, the outer end face of the gland is provided with a locking slot hole.

Preferably, the concave ring is provided with a first bevel edge on the surface where the axial direction and the radial direction meet, and the shaft sleeve is provided with a second bevel edge on the surface where the axial direction and the radial direction meet.

Preferably, the recessed ring is provided with a relief groove, and the relief groove is located at a radial surface of the shaft sleeve.

Preferably, a sealing groove is formed in the shaft sleeve, a sealing ring is arranged in the sealing groove, and the sealing ring is tightly pressed on the output shaft.

Preferably, an output shaft is arranged in the shaft sleeve, a driving shaft is arranged in the head shell, the driving shaft is connected with the output shaft, and a striking block group is arranged on the driving shaft.

Preferably, the striking block set comprises a striking block and an elastic piece, the striking block is sleeved on the driving shaft in a sliding mode and can be in contact with the output shaft, and the elastic piece is sleeved on the driving shaft and located between the driving shaft and the striking block.

Preferably, the striking block is provided with a limit groove and a carry groove, the limit groove is communicated with the carry groove, the limit groove is identical to the end of the elastic part in size, the carry groove is larger than the end of the elastic part, the driving shaft is provided with a limit boss, one end of the elastic part is abutted against and pushed on the striking block in the limit groove, and the other end of the elastic part is sleeved on the boss.

Preferably, a friction ring is arranged inside the head shell on the periphery of the accommodating cavity, and an extension ring is arranged on the friction ring and extends into the space between the shaft sleeve and the output shaft from the radial direction.

Compared with the prior art, the beneficial effects of the utility model are that:

the optimized design of the utility model, the gland can tightly lean against the shaft sleeve, and simultaneously, the convex ring can tightly lean against the transition surface between the concave ring and the radial direction of the shaft sleeve, so that the shaft sleeve is clamped from the two ends in the axial direction, the possibility of the shaft sleeve being scraped in the axial direction is lost, and the phenomena of shaft sleeve loosening, axial displacement and the like are avoided; in addition, the convex ring surrounds the periphery of the concave ring, so that the stability in the radial direction can be further improved. Thereby avoiding machine failure caused by the loosening of the shaft sleeve. The structure is simple, and the maintenance is convenient.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic cross-sectional view of the head housing, the shaft sleeve and the gland of the present invention;

FIG. 3 is an exploded view of the head housing, shaft sleeve and gland of the present invention;

fig. 4 is a first schematic structural view of the shaft sleeve of the present invention;

fig. 5 is a schematic structural diagram of the shaft sleeve according to the present invention.

The anti-vibration device comprises a head shell 1, a containing cavity 10, a convex ring 11, an internal thread 12, a shaft sleeve 2, a sealing groove 20, a sealing ring 21, a concave ring 22, a bevel edge I23, a bevel edge II 24, a tool withdrawal groove 25, a gland 3, an external thread 30, a locking groove hole 31, an output shaft 4, a driving shaft 5, a striking block 6, a limiting groove 60, a carry groove 61, a limiting boss 62, an elastic part 63, a friction ring 7 and an extension ring 70.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.

Examples

Referring to fig. 1 to 5, the utility model discloses a shaft sleeve anti-loosening electric wrench, which comprises a head shell 1, a shaft sleeve 2 and a gland 3. The head shell 1 is provided with an accommodating cavity 10. A convex ring 11 is arranged in the accommodating cavity 10. The sleeve 2 is provided with a female ring 22 extending axially from the end. The sleeve 2 is arranged in the receiving chamber 10 and the female ring 22 is arranged in the male ring 11. The gland 3 is arranged at the cavity opening of the accommodating cavity 10 in a threaded manner and is abutted against the end face of the shaft sleeve 2. Through the optimized design, the gland 3 can tightly abut against the shaft sleeve 2, meanwhile, the convex ring 11 can tightly abut against the transition surface between the concave ring 22 and the radial direction of the shaft sleeve 2, the shaft sleeve 2 is clamped from the two ends in the axial direction, and the possibility of axial sliding of the shaft sleeve 2 is lost; in addition, the convex ring 11 surrounds the circumference of the concave ring 22, and the stability in the radial direction can be further improved. Thereby avoiding the machine fault caused by the loosening of the shaft sleeve 2.

Specifically, the output shaft 4 is provided in the sleeve 2. A drive shaft 5 is provided in the head housing 1. The drive shaft 5 is connected to the output shaft 4. The driving shaft 5 is provided with a striking block set 6. The end of the output shaft 4 exposed out of the head housing 1 may be provided with a screw head matching the bolt to be screwed. The drive shaft 5 is able to drive the output shaft 4, which output shaft 4 transmits the torque to the screw head. The striking block set 6 provides striking vibration to the output shaft 4. During the actual assembly, the sleeve 2 can be arranged in the receiving cavity 10 in an interference manner.

The pad set 6 includes a pad and an elastic member 63. The striking block is sleeved on the driving shaft 5 in a sliding manner and can be contacted with the output shaft 4. The elastic member 63 is fitted over the driving shaft 5 and located between the driving shaft 5 and the striking block. The elastic member 63 may be a spring.

As a further improvement of the utility model, the striking block is provided with a limit groove 60 and a carry groove 61. The stopper groove 60 communicates with the carry groove 61. The size of the limiting groove 60 is consistent with that of the end part of the elastic piece 63. The seating groove 61 is larger than the end of the elastic member 63. The drive shaft 5 is provided with a limit boss 62. One end of the elastic member 63 is pushed against the striking block in the limiting groove 60, and the other end is sleeved on the boss 62. The groove 61 of advancing can make elastic component 63 get into spacing groove 60 more easily, and spacing groove 60 and boss 62 can be respectively in the position of both ends stable elastic component 63, make elastic component 63's elasticity more even stable to avoid output shaft 4 to move the area loose axle sleeve 2.

The head case 1 is provided with a friction ring 7 at the periphery of the housing chamber 10. The friction ring 7 is provided with an extension ring 70. The extension ring 70 radially extends between the sleeve 2 and the output shaft 4. The friction ring 7 can provide buffering for the shaft sleeve 2 and the output shaft 4, and the service life of the friction ring is prolonged.

When the gland 3 is screw-provided in the head housing 1, an external thread 30 may be provided on the circumference of the gland 3. An internal thread 12 matching the external thread 30 is provided at the mouth of the receiving chamber 10. The diameter of the internal thread 12 is not smaller than the diameter of the sleeve 2. The depth of the internal thread 12 is deeper than the end surface depth of the shaft sleeve 2. In this way, the shaft sleeve 2 can be placed into the accommodating cavity 10, and the gland 3 still has a thread which can go deep after abutting against the shaft sleeve 2, so as to ensure the tightness of the abutting.

In order to facilitate the screwing-in and unscrewing of the gland 3, a locking slot hole 31 is formed on the outer end surface of the gland 3. The locking slot 31 may be two opposing slots cut radially in the end face of the gland 3 so that it can be operated using a flat tool.

In order to further improve the anti-loose performance, glue is filled between the gland 3 and the accommodating cavity 10.

A sealing groove 20 is formed in the shaft sleeve 2. A seal ring 21 is provided in the seal groove 20. The seal ring 21 is pressed against the output shaft 4. It can seal the inside and outside of the head shell 1, and avoid oil overflow or dust entering the inside of the head shell 1.

The concave ring 22 is provided with a bevel edge 23 on the surface where the axial direction and the radial direction meet. The first bevel edge 23 can guide the concave ring 22 to make the concave ring 22 smoothly enter the convex ring 11.

The shaft sleeve 2 is provided with a second bevel edge 24 on the surface where the axial direction and the radial direction meet. Bevel edge two 24 is located on the side of female ring 22. The second bevel edge 24 can guide the shaft sleeve 2, so that the shaft sleeve 2 smoothly enters the accommodating cavity 10.

The recessed ring 22 is provided with a relief groove 25. The relief 25 is located at the radial face of the sleeve 2. The tool withdrawal groove 25 can make the shaft sleeve 2 more easily pressed in place during press fitting.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides an anti-loosening electric wrench of shaft sleeve, its characterized in that, includes head shell, axle sleeve and gland, seted up on the head shell and held the chamber, it is provided with the bulge loop to hold the intracavity, be provided with the concave ring that begins axial extension by the tip on the axle sleeve, the axle sleeve sets up and is holding the intracavity, just the concave ring sets up in the bulge loop, the gland screw thread sets up at the accent that holds the chamber, and supports and lean on the terminal surface of axle sleeve.

2. The shaft sleeve anti-loosening electric wrench as claimed in claim 1, wherein the periphery of the gland is provided with an external thread, the cavity opening of the accommodating cavity is provided with an internal thread matched with the external thread, the diameter of the internal thread is not less than that of the shaft sleeve, and the depth of the internal thread is deeper than the depth of the end face of the shaft sleeve.

3. The anti-loosening electric wrench for shaft sleeves as claimed in claim 1, wherein the outer end face of the gland is provided with a locking slot hole.

4. The anti-loosening electric wrench for a shaft sleeve as claimed in claim 1, wherein the concave ring is provided with a first bevel edge on a surface where the axial direction and the radial direction meet, and the shaft sleeve is provided with a second bevel edge on a surface where the axial direction and the radial direction meet.

5. The anti-loosening electric wrench as claimed in claim 1, wherein the concave ring is provided with a relief groove, and the relief groove is located at a radial surface of the shaft sleeve.

6. The shaft sleeve anti-loosening electric wrench as claimed in claim 1, wherein a sealing groove is formed in the shaft sleeve, a sealing ring is arranged in the sealing groove, and the sealing ring is tightly pressed on the output shaft.

7. The anti-loosening electric wrench as claimed in claim 1, wherein an output shaft is provided in the shaft sleeve, a driving shaft is provided in the head housing, the driving shaft is connected to the output shaft, and the striking block set is provided on the driving shaft.

8. The anti-loosening electric wrench for shaft sleeves as claimed in claim 7, wherein the striking block set comprises a striking block and an elastic member, the striking block is slidably sleeved on the driving shaft and can be in contact with the output shaft, and the elastic member is sleeved on the driving shaft and is located between the driving shaft and the striking block.

9. The anti-loosening electric wrench for shaft sleeves as claimed in claim 8, wherein the striking block is provided with a limiting groove and a carry groove, the limiting groove is communicated with the carry groove, the size of the limiting groove is consistent with that of the end portion of the elastic member, the carry groove is larger than that of the end portion of the elastic member, the driving shaft is provided with a limiting boss, one end of the elastic member abuts against and pushes against the striking block in the limiting groove, and the other end of the elastic member is sleeved on the boss.

10. The anti-loosening electric wrench for shaft sleeves as claimed in claim 7, wherein the friction ring is arranged on the periphery of the accommodating cavity in the head shell, and an extension ring is arranged on the friction ring and radially extends between the shaft sleeve and the output shaft.