CN201042786Y - Multi-layer sleeve structure - Google Patents

Abstract

A multi-layer sleeve structure, including an outer sleeve and an inner sleeve; an anti-skid device is provided between the outer sleeve and the inner sleeve; the anti-skid device includes a plurality of grooves provided on the outer sleeve, and the inner sleeve is provided with corresponding flanges; the anti-skid device includes a plurality of flanges provided on the outer sleeve, and the inner sleeve is provided with corresponding grooves; the flanges are arc-shaped, rectangular or triangular, and the grooves are corresponding patterns; the outer sleeve is made of steel; and the inner sleeve is made of aluminum. The utility model makes the outer sleeve and the inner sleeve firmly combined, avoids direct impact on the working surface during operation, and has a long service life.

Description

Multi-layer sleeve structure

technical field

The utility model relates to a hand tool, in particular to a multi-layer sleeve structure with an outer cylinder and an inner bushing which are firmly combined, avoiding direct impact on the working surface during operation, and have a long service life.

Background technique

Existing sleeves such as U.S. Patent No. 6397706, "PROTECTIVE SOCKETS", mainly divide the sleeve into two parts, the outer cylinder and the inner bushing. The outer cylinder is made of high-hardness steel, and the inner bushing It is made of a material with lower hardness than the outer cylinder, and the outer cylinder is sleeved on the outside of the inner bushing, so that only the protruding part of one end of the inner bushing protrudes from one end of the outer cylinder, so that when the sleeve is in use, This protrusion creates protection against direct impact on the work surface.

However, the contact surface of the outer cylinder and the inner bushing of the existing sleeve is cylindrical, and there is a smooth arc surface between the two, and there is no effective point of force, and when the sleeve turns the screw It is necessary to bear the corresponding reaction force, so the sleeve, especially the inner bushing, will produce a certain degree of twisting and deformation, which will make it easier to destroy the bonding state between the outer cylinder and the inner bushing, so the existing sleeve is in the After using for a period of time, it is easy to produce the shortcoming that the outer cylinder and the inner liner slip off, the service life of the product is short, and its practicality is poor as a whole.

Utility model content

The main technical problem to be solved by the utility model is to provide a multi-layer sleeve structure to make the outer cylinder and the inner bushing The combination is stable and reliable, avoiding direct impact on the working surface during operation, and has a long service life.

The technical scheme that the utility model solves its technical problem adopts is:

A multi-layer sleeve structure includes an outer cylinder and an inner bushing; the feature is that an anti-slip device is provided between the outer cylinder and the inner bushing.

In the aforementioned multi-layer sleeve structure, the anti-slip device includes several grooves on the outer cylinder, and the inner bushing is provided with corresponding flanges.

In the aforementioned multi-layer sleeve structure, the anti-slip device includes several flanges on the outer cylinder, and the inner bushing is provided with corresponding grooves.

In the aforementioned multi-layer sleeve structure, the flanges are arc-shaped, rectangular or triangular, and the grooves are corresponding figures.

The aforementioned multi-layer sleeve structure, wherein the outer cylinder is made of steel; the inner bushing is made of aluminum.

The utility model solves its technical problem and can also adopt following technical scheme:

A multi-layer sleeve structure, comprising an outer cylinder and an inner bushing, characterized in that an anti-slip device is provided between the outer cylinder and the inner bushing, the port of the outer cylinder is higher than the port of the inner bushing, the The outer cylinder has the effect of cushioning.

In the aforementioned multi-layer sleeve structure, the anti-slip device includes several grooves on the outer cylinder, and the inner bushing is provided with corresponding flanges.

In the aforementioned multi-layer sleeve structure, the anti-slip device includes several flanges on the outer cylinder, and the inner bushing is provided with corresponding grooves.

In the aforementioned multi-layer sleeve structure, the flanges are arc-shaped, rectangular or triangular, and the grooves are corresponding figures.

The aforementioned multi-layer sleeve structure, wherein the outer cylinder is made of aluminum; the inner bushing is made of steel.

The utility model solves its technical problem and still can adopt following technical scheme:

A multi-layer sleeve structure, including an outer cylinder and an inner bush; it is characterized in that an anti-slip device is provided between the outer cylinder and the inner bush, and a buffer is provided on the port sleeve of the outer cylinder and the inner bush set.

In the aforementioned multi-layer sleeve structure, the anti-slip device includes several grooves on the outer cylinder, and the inner bushing is provided with corresponding flanges.

In the aforementioned multi-layer sleeve structure, the anti-skid device includes several flanges on the outer cylinder, and the inner bushing is provided with corresponding grooves.

In the aforementioned multi-layer sleeve structure, the flanges are arc-shaped, rectangular or triangular, and the grooves are corresponding figures.

The aforementioned multi-layer sleeve structure, wherein the outer cylinder is made of steel; the inner bushing is made of aluminum.

It can be seen from the above that the multi-layer sleeve structure of the present invention not only has the effect of preventing the sleeve itself from being collided and worn, but also cooperates with the anti-skid device arranged between the outer cylinder and the inner sleeve to make the overall structural strength better and the service life longer , improve market competitiveness. Therefore the utility model has novelty, inventive step, practicality.

The beneficial effect of the utility model is that the combination of the outer cylinder and the inner bushing is firm and reliable, avoiding direct impact on the working surface during operation, and having a long service life.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a three-dimensional exploded schematic view of the multi-layer sleeve structure of the present invention.

Fig. 2 is a three-dimensional combined schematic view of the multi-layer sleeve structure of the present invention.

Fig. 3 is a side sectional view of the multi-layer sleeve structure of the present invention.

Fig. 4 is a cross-sectional view of line segment AB shown in Fig. 3 .

Fig. 5 is a schematic view of the use of the multi-layer sleeve structure of the present invention.

Fig. 6 is an exploded perspective view of the sleeve of the second embodiment.

Figure 7 is a side sectional view of a second embodiment sleeve.

FIG. 8 is a cross-sectional view of line CD shown in FIG. 7 .

Fig. 9 is an exploded perspective view of the third embodiment of the sleeve.

Figure 10 is a side sectional view of a third embodiment sleeve.

Fig. 11 is a cross-sectional view of line EF shown in Fig. 10 .

Fig. 12 is an exploded perspective view of the fourth embodiment of the sleeve.

Figure 13 is a side sectional view of a fourth embodiment sleeve.

Fig. 14 is a cross-sectional view of the line segment GH shown in Fig. 13 .

Figure 15 is a side sectional view of a fifth embodiment sleeve.

Figure 16 is a side sectional view of a sixth embodiment sleeve.

Explanation of symbols in the figure:

1——sleeve 10——outer cylinder

11——accommodating space 111——open port

112——Socket 12——Groove

13——flange 20——inner bushing

21——buffer section 22——pushing port

23——Socket groove 24——Flange

25——groove 30——buffer sleeve

Detailed ways

The utility model is a multi-layer sleeve structure, please refer to Fig. 1 to Fig. 5, the sleeve 1 mainly includes an outer cylinder 10 and an inner bushing 20, the outer cylinder 10 is made of hard steel, and the inner The bushing 20 is made of aluminum material with poor hardness, and an anti-slip device composed of corresponding grooves 12 and flanges 24 is provided between the outer cylinder 10 and the inner bushing 20;

The outer cylinder 10 is generally in the shape of a hollow cylinder, and has an accommodating space 11 inside for the inner liner 20 to accommodate. The periphery of the space 11 is provided with several grooves 12. In this embodiment, the grooves 12 are arc-shaped and arranged around the periphery of the accommodating space 11;

The inner liner 20 is generally cylindrical, with a convex buffer section 21 on the outer side of the top end, and a pulling port 22 on the inner side of the top end, which can be socketed with a screw. The bottom end of the inner liner 20 forms a set of The connecting groove 23 can be set for the wrench; the outer circumference of the inner bushing 20 is provided with a flange 24 corresponding to the groove 12 of the outer cylinder 10; the inner bushing 20 is accommodated in the accommodation space 11 of the outer cylinder 10 , and the groove 12 of the anti-slip device and the flange 24 form a concave-convex combination, which has an interaction force, so that the outer cylinder 10 and the inner bush 20 are tightly combined without sliding;

When the utility model is assembled, as shown in FIG. 1 , the inner bushing 20 has one end of the socket groove 23 , and the opening port 111 of the outer cylinder 10 is placed in the accommodation space 11 . The buffer of the inner bushing 20 The section 21 covers the periphery of the open port 111 of the outer cylinder 10, and the assembled state is shown in FIG. 2 ;

It can be clearly seen from Fig. 3 and Fig. 5 that after the assembly of the sleeve 1 is completed, the buffer section 21 of the inner bush 20 covers the open end of the hard outer cylinder 10, and the outer cylinder 10 covers the inner bush 20 Therefore, when the sleeve 1 is in use, the outer cylinder 10 can increase the overall strength; while the buffer section 21 of the inner bush 20 covers the periphery of the open port 111 of the outer cylinder 10, which has the effect of preventing direct impact on the working surface.

Furthermore, as shown in Fig. 1 and Fig. 4, the groove 12 and the flange 24 of the anti-skid device form a tightly bonded state between the inner bushing 20 and the outer cylinder 10, which greatly increases the focus of the bond and makes the outer The barrel 10 and the inner bushing 20 form a concave-convex combination, which has a tight bonding force, is not easy to separate and slip, and ensures product quality.

In this embodiment, the anti-slip device adopts the type in which the groove 12 is arranged on the outer cylinder 10, and the flange 24 is arranged on the inner bushing 20. Of course, the positions of the groove 12 and the flange 24 can also be reversed, such as the groove 12 Instead, it is arranged on the inner bushing 20, while the flange 24 is arranged on the outer cylinder 10, so as to achieve the same effect.

Please refer to Figures 6 to 8, which are the second embodiment of the multi-layer sleeve structure of the present invention, wherein the main components are the same as those of the first embodiment, and will not be repeated here, and only the different structures will be described below.

The flange 13 of the anti-skid device can also be arranged around the accommodating space 11 of the outer cylinder 10, and the groove 25 is arranged at a position corresponding to the outside of the inner bushing 20, and the flange 13 and the groove 25 are Form into a rectangle for a tight fit.

Please refer to FIG. 9 to FIG. 11 , which are the third embodiment of the multi-layer sleeve structure of the present invention, in which the main components are the same as those of the first embodiment, and will not be repeated here. Only the different structures will be described below.

The flange 13 of the anti-slip device can also be arranged around the accommodating space 11 of the outer cylinder 10, and the groove 25 is arranged at a position corresponding to the outside of the inner bushing 20, and the flange 13 and the groove 25 are triangular , in order to achieve the effect of tight combination.

Please refer to FIG. 12 to FIG. 14 , which are the fourth embodiment of the multi-layer sleeve structure of the present invention, in which the main components are the same as those of the first embodiment, and will not be repeated here. Only the different structures will be described below.

The buffer section 21 can also provide an axial contact surface between the outer cylinder 10 and the inner bushing 20 of the sleeve 1 to achieve the effect of increasing the bonding strength.

Please refer to FIG. 15 , which is the fifth embodiment of the multi-layer sleeve structure of the present invention, in which the main components are the same as those of the first embodiment, and will not be repeated here. Only the different structures will be described below.

The outer cylinder 10 is made of aluminum with poor hardness, and the inner bush 20 is made of harder steel, and the outer cylinder 10 is sleeved on the outside of the pulling port 22 of the inner bush 20, and The opening port 111 of the outer cylinder 10 is made higher than the wrenching port 22 of the inner bushing 20 to provide buffering effect between the inner bushing 20 and the working surface.

Please refer to FIG. 16 , which is the sixth embodiment of the multi-layer sleeve structure of the present invention, in which the main components are the same as those of the first embodiment, and will not be repeated here. Only the different structures will be described below.

The outer cylinder 10 and the inner sleeve 20 are provided with a buffer sleeve 30 with a relatively low hardness at the opening port 111 and the pulling port 22 .

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model, All still belong to within the scope of the technical solution of the utility model.

In summary, the utility model fully meets the needs of industrial development in terms of structural design, practicability and cost-effectiveness, and the disclosed structure also has an unprecedented innovative structure, novelty, creativity and practicability, and meets the needs of industrial development. According to the requirements of the new patent requirements, the application is filed in accordance with the law.

Claims (15)

1. a multi-layer sleeve structure comprises a urceolus and a neck bush; It is characterized in that, be provided with shoe between this urceolus and the neck bush.

2. multi-layer sleeve structure according to claim 1 it is characterized in that described shoe is included in several grooves that urceolus is provided with, and neck bush is provided with corresponding flange.

3. multi-layer sleeve structure according to claim 1 it is characterized in that described shoe is included in several flanges that urceolus is provided with, and neck bush is provided with corresponding groove.

4. according to claim 2 or 3 described multi-layer sleeve structures, it is characterized in that described flange is arc, rectangle or triangle, groove is corresponding figure.

5. multi-layer sleeve structure according to claim 1 is characterized in that described urceolus is a steel matter; Described neck bush is an aluminium material.

6. a multi-layer sleeve structure comprises a urceolus and a neck bush, it is characterized in that, is provided with shoe between this urceolus and the neck bush, and the port of this urceolus is higher than the port of neck bush.

7. multi-layer sleeve structure according to claim 6 it is characterized in that described shoe is included in several grooves that urceolus is provided with, and neck bush is provided with corresponding flange.

8. multi-layer sleeve structure according to claim 6 it is characterized in that described shoe is included in several flanges that urceolus is provided with, and neck bush is provided with corresponding groove.

9. according to claim 7 or 8 described multi-layer sleeve structures, it is characterized in that described flange is arc, rectangle or triangle, groove is corresponding figure.

10. multi-layer sleeve structure according to claim 6 is characterized in that described urceolus is an aluminium material; Described neck bush is a steel matter.

11. a multi-layer sleeve structure comprises a urceolus and a neck bush; It is characterized in that, be provided with shoe between this urceolus and the neck bush, and the port of this urceolus and neck bush is arranged with a cushion collar.

12. multi-layer sleeve structure according to claim 11 it is characterized in that described shoe is included in several grooves that urceolus is provided with, and neck bush is provided with corresponding flange.

13. multi-layer sleeve structure according to claim 11 it is characterized in that described shoe is included in several flanges that urceolus is provided with, and neck bush is provided with corresponding groove.

14. according to claim 12 or 13 described multi-layer sleeve structures, it is characterized in that described flange is arc, rectangle or triangle, groove is corresponding figure.

15. multi-layer sleeve structure according to claim 11 is characterized in that described urceolus is a steel matter; Described neck bush is an aluminium material.

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