Sleeve and combination tool

Abstract

The utility model provides a sleeve and a combination tool for a hexagonal head fastener, the sleeve comprises a cylindrical sleeve main body, a hexagonal channel is arranged in the sleeve main body, the inner wall of the sleeve forms side walls in six directions and is used for accommodating a driving shaft, and steel balls are arranged on the side walls of the driving shaft; at least one side wall of the sleeve is provided with an arc-shaped groove, when the driving shaft is inserted into the hexagonal channel, the steel ball is partially embedded into the arc-shaped groove, and the functions of containing and fixing the driving shaft and easily pulling the driving shaft can be compatible.

Description

Technical Field

[0001] The present invention relates to the field of hand tools, in particular to a sleeve and a combined tool. Background Art

[0002] Currently, various wrenches are used to tighten or remove hexagonal bolts and hex socket screws. However, these existing wrenches are limited in functionality, requiring only one type of wrench for each type of screw. Furthermore, the two types of wrenches are not interchangeable: a hexagonal bolt wrench cannot tighten a hex socket screw, and vice versa. Furthermore, users often need to use hexagonal bolts and hex socket screws of various specifications, necessitating the need for multiple types of wrenches, which is inconvenient to carry and store.

[0003] The current solution uses a sleeve, which is assembled with a drive shaft. The steel ball on the drive shaft is fixed to the circular groove in the sleeve. However, to better secure the drive shaft, it is difficult to remove it when the user needs to use it, resulting in a poor user experience. Finding a way to reconcile the storage and fixation of the sleeve with convenient removal and use has become a pressing technical issue in this field. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a sleeve and a combination tool that can accommodate and fix the drive shaft and easily remove it.

[0005] The present application provides a sleeve for a hexagonal head fastener, characterized in that it includes a cylindrical sleeve body, a hexagonal channel is provided in the sleeve body, the inner wall of the sleeve forms side walls in six directions for accommodating a drive shaft, and a steel ball with a diameter of d1 is provided on the side wall of the drive shaft; at least one side wall of the sleeve has an arcuate groove, and when the drive shaft is inserted into the hexagonal channel, the steel ball is partially embedded in the arcuate groove; the depth of the arcuate groove is d2, 0.2*d1≤d2≤0.4*d1.

[0006] In one embodiment, the edge of the arc-shaped groove is provided with a rounded corner, the radius of the rounded corner is R, 0.3mm≤R≤0.7mm.

[0007] In one embodiment, the arc-shaped groove is a spherical groove, and the radius of the spherical groove is greater than or equal to the radius of the steel ball.

[0008] In one embodiment, the sleeve body includes a first end and an opposite second end, the first end is provided with a hexagonal channel of a first specification, and the second end is provided with a hexagonal channel of a second specification; at least one side wall of the sleeve has two arc grooves for fixing drive shafts of different specifications.

[0009] In one embodiment, the two arcuate grooves include a first arcuate groove and a second arcuate groove arranged along the axial direction of the sleeve, and the depth deviation of the first arcuate groove and the second arcuate groove is within 20%.

[0010] In one embodiment, each of the six side walls of the sleeve has at least one arc-shaped groove.

[0011] In one embodiment, the diagonal length of the tangent surface of the hexagonal channel of the first specification is 1 / 4 inch, and the diagonal length of the tangent surface of the hexagonal channel of the second specification is 5 / 16 inch.

[0012] A combination tool, characterized in that it includes a drive shaft and a sleeve as described in any one of the above items; the drive shaft includes a drive end, a mounting end and a shaft cap located between the drive end and the mounting end, and a steel ball is provided on the drive shaft, and the diameter of the steel ball is d1, 4mm≤d1≤8mm.

[0013] In one embodiment, a mounting hole is provided at one end of the drive shaft, a spring is provided in the mounting hole, and the steel ball of the drive shaft is enabled to move up and down and lock the sleeve through the spring.

[0014] In one embodiment, a magnet is provided at the front end of the driving shaft.

[0015] The sleeve for a hexagonal head fastener provided in the present application includes a cylindrical sleeve body, a hexagonal channel is provided in the sleeve body, the inner wall of the sleeve forms side walls in six directions for accommodating a drive shaft, and steel balls are provided on the side walls of the drive shaft; at least one side wall of the sleeve has an arcuate groove, and when the drive shaft is inserted into the hexagonal channel, the steel ball is partially embedded in the arcuate groove, which can be compatible with the functions of storing and fixing the drive shaft and easy to remove. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a cross-sectional view of the interior of the sleeve of this application;

[0017] Figure 2 This is a cross-sectional view of the 5 / 16 end of the sleeve and the drive shaft of this application;

[0018] Figure 3 This is a cross-sectional view of the 1 / 4 end of the sleeve and the drive shaft of this application;

[0019] Figure 4 This is a cross-sectional view of the interior of the drive shaft for this application;

[0020] Figure 5 This is a cross-sectional view of the fixing portion of the sleeve and the drive shaft of this application;

[0021] Figure 6 This is a schematic diagram of the assembly of the sleeve and the drive shaft of this application;

[0022] As shown in the figure, 1. sleeve; 1.1. sleeve body; 1.2. hexagonal channel; 1.3. side wall; 1.4. arc groove; 1.5. first end; 1.6. second end; 1.7. first arc groove; 1.8. second arc groove; 2. drive shaft; 2.1. drive end; 2.2. mounting end; 2.3. shaft cap; 2.4. steel ball; 2.5. spring; 2.6 magnet. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention is not limited to these embodiments and covers any substitution, modification, equivalent method and solution made within the spirit and scope of the present invention.

[0024] In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can also fully understand the present invention without description of these details.

[0025] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are simplified and not to exact proportions, and are only used for the purpose of conveniently and clearly illustrating the embodiments of the present invention.

[0026] like Figure 1 The figure shows a schematic structural diagram of the sleeve 1 of the present application. The sleeve 1 is suitable for use with hexagonal head fasteners and comprises a cylindrical sleeve body 1.1, within which a hexagonal channel 1.2 is defined. The inner wall of the sleeve 1 forms six sidewalls 1.3 for accommodating a drive shaft 2. The sidewalls 1.3 of the drive shaft 2 are provided with steel balls 2.4 having a diameter of d1. At least one sidewall 1.3 of the sleeve 1 has an arcuate groove 1.4. When the drive shaft 2 is inserted into the hexagonal channel 1.2, the steel balls 2.4 partially embed in the arcuate groove 1.4. The depth of the arcuate groove 1.4 is d2, where 0.2*d1≤d2≤0.4*d1.

[0027] The sleeve 1 has a hexagonal channel 1.2 that can accommodate a similarly shaped drive handle for rotational locking. At least one sidewall 1.3 of the sleeve 1 has an arcuate groove 1.4. For example, this can be provided on one sidewall 1.3 within the sleeve 1. When the drive shaft 2 needs to be stored within the sleeve 1, the user needs to align the sidewall 1.3 of the drive shaft 2 with the steel ball 2.4 with the sidewall 1.3 within the sleeve 1 with the arcuate groove 1.4 to achieve alignment. Alternatively, all six sidewalls 1.3 within the sleeve 1 can be provided with an arcuate groove 1.4. When the drive shaft 2 needs to be stored within the sleeve 1, the user does not need to check the orientation of the sleeve 1 to complete the storage and installation. This improves efficiency and user experience. The design ratio of 20%*d1≤d2≤40%*d1 ensures that the fixing strength is maintained while also taking into account the ease of disassembly. This ratio avoids the problem of steel ball 2.4 being easily dislodged due to being embedded too shallowly, and achieves a balance between stability and flexibility.

[0028] Specifically, in this embodiment, d2=0.3*d1.

[0029] To allow the user to quickly and smoothly remove the drive shaft 2 after securing it for use, the present application has designed an arcuate groove 1.4 (spherical groove). The edges of the arcuate groove 1.4 are provided with rounded corners. The radius of the rounded corners is R, 0.3mm≤R≤0.7mm, which can improve assembly efficiency. Specifically, in this embodiment, to further improve assembly efficiency, the edges of the spherical groove can be designed with a rounded corner of R0.5 (0.5mm) to reduce resistance when inserting the steel ball 2.4 and optimize the assembly process.

[0030] This application optimizes the internal rounding of the hexagonal hole in the sleeve 1. The optimally angled rounded corners effectively accommodate the drive shaft 2 while facilitating its removal. Furthermore, this design effectively minimizes damage to the hexagonal screw and drive shaft 2. The rounded corners also strengthen the structure, reduce stress concentration, and increase component lifespan and strength, helping to reduce wear on the screw and drive shaft 2.

[0031] In one embodiment, the arcuate groove 1.4 is a spherical groove, and the radius of the spherical groove is greater than or equal to the radius of the steel ball 2.4. The radius of the spherical groove should be greater than or equal to the radius of the steel ball 2.4 and should be in the range of 0 to 0.05 mm to prevent axial movement between the sleeve 1 and the shaft.

[0032] In one embodiment, the sleeve body 1.1 includes a first end 1.5 and an opposite second end 1.6, the first end 1.5 is provided with a hexagonal channel 1.2 of a first specification, and the second end 1.6 is provided with a hexagonal channel 1.2 of a second specification; at least one side wall 1.3 of the sleeve 1 has two arc grooves 1.4 for fixing drive shafts 2 of different specifications. For example, the tangential diagonal length of the hexagonal channel 1.2 of the first specification is 1 / 4, and the tangential diagonal length of the hexagonal channel 1.2 of the second specification is 5 / 16. Hexagonal socket 1 interfaces of different specifications are designed at both ends of the sleeve 1. Only by switching the direction, two different sizes of hexagonal nuts can be quickly switched and installed, thereby improving the versatility and operational flexibility of the tool. Figure 2 and Figure 3 As shown, when the drive shaft 2 is inserted into the 1 / 4 end, the 5 / 16 end can be used. When the drive shaft 2 is inserted into the 5 / 16 end, the 1 / 4 end can be used.

[0033] In one embodiment, the two arcuate grooves 1.4 include a first arcuate groove 1.7 and a second arcuate groove 1.8 disposed axially along the sleeve 1. The two arcuate grooves 1.4 include a first arcuate groove 1.7 and a second arcuate groove 1.8 disposed axially along the sleeve 1. The depth deviation between the first arcuate groove 1.7 and the second arcuate groove 1.8 is within 20%. Specifically, in this embodiment, the arcuate grooves 1.4 on the same sleeve 1 are of uniform size. If the sleeve 1 needs to be adapted to a 5 / 16-inch drive shaft 2, the diameter of the steel ball 2.4 must also change accordingly, the diameter of the spherical groove must also change, and the embedding depth must also be appropriately deepened or remain unchanged, but should not exceed 50% of the diameter of the steel ball 2.4.

[0034] This application also provides a combination tool, such as Figure 6 As shown, it includes a drive shaft 2 and the above-mentioned sleeve 1. The drive shaft 2 includes a drive end 2.1, a mounting end 2.2 and a shaft cap 2.3 located between the drive end 2.1 and the mounting end 2.2. A steel ball 2.4 is provided on the drive shaft 2, and the diameter of the steel ball 2.4 is d1, 4mm≤d1≤8mm.

[0035] The sleeve 1 includes a cylindrical sleeve body 1.1, within which a hexagonal channel 1.2 is formed. The inner wall of the sleeve 1 forms six sidewalls 1.3 for accommodating the drive shaft 2. Steel balls 2.4 are disposed on the sidewalls 1.3 of the drive shaft 2. At least one sidewall 1.3 of the sleeve 1 has an arcuate groove 1.4. When the drive shaft 2 is inserted into the hexagonal channel 1.2, the steel balls 2.4 partially embed within the arcuate groove 1.4. The drive shaft 2 and sleeve 1 are secured together by the steel balls 2.4 and the spherical grooves, providing axial and radial fixation. In this embodiment, the steel balls 2.4 preferably have a diameter of 3 mm, and the spherical grooves are a matching 3 mm diameter. The 3 mm steel balls 2.4 are fixedly connected to the 3 mm spherical grooves, ensuring stable fixation.

[0036] In one embodiment, Figure 2 、 Figure 3 and Figure 4 As shown, one end of the drive shaft 2 is provided with a mounting hole, in which a spring 2.5 is provided. The steel ball 2.4 of the drive shaft 2 is moved up and down and locked to the sleeve 1 by the spring 2.5. Figure 5 As shown, the steel ball 2.4 is used by the spring 2.5 to achieve up and down movement and lock the sleeve 1. When the drive shaft 2 is pushed into the sleeve 1, the steel ball 2.4 and the spring 2.5 are compressed, and the drive shaft 2 can be smoothly pushed into the sleeve 1. When the steel ball 2.4 reaches the ball groove position in the sleeve 1, the spring 2.5 is no longer compressed and released, thereby fixing the position.

[0037] In one embodiment, a magnet 2.6 is provided at the front end of the drive shaft 2. Figure 2 、 Figure 3 and Figure 4 As shown, Figure 4 To showcase the internal structure of the drive shaft 2, a mounting hole for magnet 2.6 is designed at the front end of the drive shaft 2. This magnet 2.6 precisely captures and secures the hexagonal screw through magnetic attraction. This design significantly improves operational efficiency and convenience, reduces the risk of screw loss during assembly or maintenance, and optimizes the tool's user experience. The cap 2.3 on the drive shaft 2 restricts the movement of the sleeve 1, preventing the steel ball 2.4 from entering the incorrect position.

[0038] The above description is merely a description of preferred embodiments of the present invention and should not be construed as limiting the scope of the claims. The present invention is not limited to the above embodiments, and variations in the specific structure are permitted. In short, all variations made within the scope of the independent claims of the present invention are also within the scope of protection of the present invention.

Claims

1. A sleeve, characterized in that: It includes a cylindrical sleeve body with a hexagonal channel provided in the sleeve body. The inner wall of the sleeve forms side walls in six directions for accommodating the drive shaft. A steel ball with a diameter of d1 is provided on the side wall of the drive shaft; at least one side wall of the sleeve has an arcuate groove. When the drive shaft is inserted into the hexagonal channel, the steel ball is partially embedded in the arcuate groove. The depth of the arcuate groove is d2, 0.2*d1≤d2≤0.4*d1.

2. The sleeve according to claim 1, characterized in that The edge of the arc-shaped groove is provided with a rounded corner, the radius of the rounded corner is R, 0.3mm≤R≤0.7mm.

3. The sleeve according to claim 1, characterized in that The arc-shaped groove is a spherical groove, and the radius of the spherical groove is greater than or equal to the radius of the steel ball.

4. The sleeve according to claim 1, characterized in that The sleeve body includes a first end and an opposite second end, the first end is provided with a hexagonal channel of a first size, and the second end is provided with a hexagonal channel of a second size; at least one side wall of the sleeve has two arc grooves for fixing drive shafts of different sizes.

5. The sleeve according to claim 4, characterized in that The two arcuate grooves include a first arcuate groove and a second arcuate groove arranged along the axial direction of the sleeve, and the depth deviation of the first arcuate groove and the second arcuate groove is within 20%.

6. The sleeve according to claim 4, characterized in that The diagonal length of the tangent surface of the hexagonal channel of the first specification is 1 / 4 inch, and the diagonal length of the tangent surface of the hexagonal channel of the second specification is 5 / 16 inch.

7. The sleeve according to claim 1, characterized in that The six side walls of the sleeve each have at least one arc-shaped groove.

8. A combination tool, characterized in that: It comprises a drive shaft and the sleeve according to any one of claims 1 to 6, wherein the drive shaft comprises a drive end, a mounting end and a shaft cap located between the drive end and the mounting end, and a steel ball is provided on the drive shaft, and the diameter of the steel ball is d1, 4mm≤d1≤8mm.

9. The combination tool according to claim 8, characterized in that: One end of the drive shaft is provided with a mounting hole, and a spring is provided in the mounting hole. The steel ball of the drive shaft is enabled to move up and down and lock the sleeve through the spring.

10. The combination tool according to claim 8, characterized in that: A magnet is provided at the front end of the driving shaft.

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