Telescopic sleeve

Abstract

The utility model relates to the technical field of sleeves, and discloses a telescopic sleeve which comprises a hollow cylinder, a bearing is fixedly connected to the surface of the hollow cylinder, a rotating block is fixedly connected to the surface of the bearing, internal thread cylinders are fixedly connected to the upper side and the lower side of the rotating block, a first sliding column is arranged on the inner wall of the hollow cylinder in an attached mode, and a second sliding column is arranged on the inner wall of the hollow cylinder. A top block is fixedly connected to the upper surface of the first sliding column, a second sliding column is arranged on the inner wall of the hollow cylinder in an attached mode, and a sleeve head is fixedly connected to the bottom of the second sliding column. Through the cooperation of the hollow cylinder, the sliding hole and the connecting column, when a user rotates the internal thread cylinder, the external thread cylinder does not rotate along with the internal thread cylinder, through the cooperation of the internal thread cylinder and the external thread cylinder, the length of the telescopic sleeve is changed, and meanwhile due to the fact that the rotating block can rotate at any angle, the telescopic sleeve is convenient to use. Therefore, the length of the telescopic sleeve can be adjusted in a stepless mode, and the telescopic sleeve is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of sleeves, in particular to a telescopic sleeve. Background Art

[0002] Socket is the abbreviation of socket wrench. Because it is put on various types of wrenches and is shaped like a cylinder, it is commonly called a socket. It is a commonly used tool for production, maintenance, and life. At present, the telescopic sockets on the market are mainly composed of an outer sleeve, an inner sleeve, a slot, a top ball, and a top ball limit bracket. Among them, the top ball can be clamped in the slot at different positions through the top ball limit bracket to change the length of the telescopic sleeve. For example, a telescopic sleeve disclosed in Chinese patent announcement number CN215037019U, but because the position of the slot is fixed, the length of the telescopic sleeve cannot be adjusted steplessly, which makes the telescopic sleeve inconvenient to use. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings existing in the prior art. For example, at present, the telescopic sleeve on the market is mainly composed of an outer sleeve, an inner sleeve, a slot, a top ball and a top ball limiting bracket. Among them, after the top ball is clamped in the slot at different positions by the top ball limiting bracket, the length of the telescopic sleeve can be changed. However, since the position of the slot is fixed, the length of the telescopic sleeve cannot be adjusted steplessly, which makes the telescopic sleeve inconvenient to use. A telescopic sleeve is proposed.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A telescopic sleeve comprises a hollow cylinder, a bearing is fixedly connected to the surface of the hollow cylinder, a rotating block is fixedly connected to the surface of the bearing, an internal threaded cylinder is fixedly connected to the upper and lower sides of the rotating block, a first sliding column is fitted on the inner wall of the hollow cylinder, a top block is fixedly connected to the upper surface of the first sliding column, a second sliding column is fitted on the inner wall of the hollow cylinder, a sleeve head is fixedly connected to the bottom of the second sliding column, the upper surface of the sleeve head and the bottom of the top block are fixedly connected to an externally threaded cylinder, a first air groove is provided on the side of the externally threaded cylinder away from the rotating block, a sliding hole is provided on the surface of the hollow cylinder, a connecting column is fixedly connected to the inner wall of the externally threaded cylinder, the surface of the first sliding column and the surface of the second sliding column, and the surface of the connecting column contacts the inner wall of the sliding hole.

[0006] Preferably, a slot is formed on the upper surface of the top block, and a regular hexagonal slot is formed on the bottom of the sleeve head.

[0007] Preferably, the upper surface of the sleeve head and the bottom of the top block are fixedly connected with a sealing cylinder, a second air groove is opened on the side of the sealing cylinder away from the rotating block, the inner wall of the sealing cylinder contacts the surface of the internal threaded cylinder, and the surface of the sealing cylinder, the upper surface of the sleeve head and the bottom of the top block are fixedly connected with a cylindrical dustproof net.

[0008] Preferably, a strip hole is provided on the front of the sealing cylinder, a transparent scale is fixedly connected to the inner wall of the strip hole, an annular groove is provided on the surface of the internal threaded cylinder, and indicator rings are fitted on the inner wall of the annular groove and the inner wall of the sealing cylinder.

[0009] Preferably, the cross section of the rotating block is a regular hexagon, and the center of the rotating block coincides with the center of the hollow cylinder.

[0010] Preferably, an anti-slip sleeve is bonded to the surface of the rotating block.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The utility model uses the cooperation of the hollow cylinder, the sliding hole and the connecting column to ensure that when the user rotates the internal threaded cylinder, the external threaded cylinder will not rotate along with the internal threaded cylinder, and the cooperation between the internal threaded cylinder and the external threaded cylinder can change the length of the telescopic sleeve. At the same time, since the rotating block can be rotated at any angle, the length of the telescopic sleeve can be adjusted steplessly, making the telescopic sleeve more convenient to use.

[0013] (2) The utility model can prevent dust from being adsorbed on the external threaded cylinder by cooperating with the sealing cylinder, the second air groove and the cylindrical dustproof net, thereby preventing the wear rate between the internal threaded cylinder and the external threaded cylinder from accelerating when the internal threaded cylinder rotates on the external threaded cylinder due to the adsorption of dust on the external threaded cylinder. At the same time, through the cooperation of the indicator ring and the transparent scale, the user can intuitively judge the length of the telescopic sleeve when adjusting the length of the telescopic sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 It is a front view of the structure of the utility model;

[0017] Figure 4 It is a front view of the hollow core tube of the utility model;

[0018] Figure 5 It is a top view of the transfer block of the utility model;

[0019] Figure 6 It is a front view of the internal threaded barrel in the utility model;

[0020] Figure 7 It is a top view of the top block in the utility model;

[0021] Figure 8 It is a bottom view of the sleeve head in the utility model;

[0022] Fig. 9 It is a front view of the sealing cylinder in the utility model.

[0023] In the figure: 1. hollow cylinder; 2. bearing; 3. rotating block; 4. internally threaded cylinder; 5. first sliding column; 6. top block; 7. second sliding column; 8. sleeve head; 9. externally threaded cylinder; 10. first air groove; 11. sliding hole; 12. connecting column; 13. slot; 14. regular hexagonal slot; 15. sealing cylinder; 16. second air groove; 17. cylindrical dustproof net; 18. strip hole; 19. transparent scale; 20. annular groove; 21. indicator ring; 22. anti-slip sleeve. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] Embodiment 1:

[0027] Reference Figure 1-8A telescopic sleeve comprises a hollow cylinder 1, a bearing 2 is fixedly connected to the surface of the hollow cylinder 1, a rotating block 3 is fixedly connected to the surface of the bearing 2, the rotating block 3 is fixed to the hollow cylinder 1 through the bearing 2, and the rotating block 3 can rotate freely on the hollow cylinder 1, the cross section of the rotating block 3 is a regular hexagon, the center of the rotating block 3 coincides with the center of the hollow cylinder 1, an anti-slip sleeve 22 is bonded to the surface of the rotating block 3, and the anti-slip sleeve 22 prevents the user from slipping when rotating the rotating block 3, and the upper and lower sides of the rotating block 3 are fixedly connected with an internal threaded cylinder 4, a first sliding column 5 is fitted on the inner wall of the hollow cylinder 1, and a top block 6 is fixedly connected to the upper surface of the first sliding column 5, and the movement trajectory of the top block 6 is guided by the cooperation of the first sliding column 5 and the hollow cylinder 1, a second sliding column 7 is fitted on the inner wall of the hollow cylinder 1, and a sleeve head 8 is fixedly connected to the bottom of the second sliding column 7, and the movement trajectory of the sleeve head 8 is guided by the cooperation of the hollow cylinder 1 and the second sliding column 7. The upper surface of the sleeve head 8 and the bottom of the top block 6 are fixedly connected with an externally threaded tube 9, and a first air groove 10 is provided on the side of the externally threaded tube 9 away from the rotating block 3. When the length of the telescopic sleeve changes, the air inside and outside the telescopic sleeve can circulate through the first air groove 10. A sliding hole 11 is provided on the surface of the hollow cylinder 1, and the inner wall of the externally threaded tube 9, the surface of the first sliding column 5 and the surface of the second sliding column 7 are fixedly connected with a connecting column 12. The surface of the connecting column 12 contacts the inner wall of the sliding hole 11. Through the cooperation of the sliding hole 11 and the connecting column 12, when the user rotates the internally threaded tube 4, the externally threaded tube 9 will not rotate with the internally threaded tube 4. A clamping groove 13 is provided on the upper surface of the top block 6, and the telescopic sleeve can be clamped on an electric wrench or a manual wrench through the clamping groove 13. A regular hexagonal groove 14 is provided at the bottom of the sleeve head 8. When the regular hexagonal groove 14 is sleeved on the bolt or nut, the bolt or nut can be tightened through the telescopic sleeve.

[0028] Embodiment 2:

[0029] Reference Figure 1-9 The upper surface of the sleeve head 8 and the bottom of the top block 6 are fixedly connected with a sealing cylinder 15, and a second air groove 16 is opened on the side of the sealing cylinder 15 away from the rotating block 3. The air inside and outside the sealing cylinder 15 can be sealed through the second air groove 16. The inner wall of the sealing cylinder 15 contacts the surface of the internal threaded cylinder 4. The surface of the sealing cylinder 15, the upper surface of the sleeve head 8 and the bottom of the top block 6 are fixedly connected with a cylindrical dustproof net 17. The cylindrical dustproof net 17 prevents dust from entering the sealing cylinder 15 through the second air groove 16. Through the cooperation of the sealing cylinder 15, the second air groove 16 and the cylindrical dustproof net 17, dust can be prevented from being adsorbed on the external threaded cylinder 9, thereby preventing the wear speed between the internal threaded cylinder 4 and the external threaded cylinder 9 from being accelerated when the internal threaded cylinder 4 rotates on the external threaded cylinder 9 due to dust adsorbed on the external threaded cylinder 9.

[0030] A strip hole 18 is provided on the front of the sealing tube 15, and a transparent scale 19 is fixedly connected to the inner wall of the strip hole 18. An annular groove 20 is provided on the surface of the internal threaded tube 4. An indicator ring 21 is fitted on the inner wall of the annular groove 20 and the inner wall of the sealing tube 15. Through the cooperation of the indicator ring 21 and the transparent scale 19, the user can intuitively judge the length of the telescopic sleeve when adjusting the length of the telescopic sleeve.

[0031] In the utility model, when adjusting the length of the telescopic sleeve, the user first rotates the rotating block 3 to rotate the internal threaded tube 4, and then, through the cooperation of the hollow tube 1, the connecting column 12, the sliding hole 11 and the external threaded tube 9, the distance between the top block 6 and the sleeve head 8 is changed, and the length of the telescopic sleeve is changed. When the rotating block 3 stops rotating, the self-locking property between the external threaded tube 9 and the internal threaded tube 4 prevents the length of the telescopic sleeve from being changed.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A telescopic sleeve, comprising a hollow cylinder (1), characterized in that: The surface of the hollow cylinder (1) is fixedly connected to a bearing (2), the surface of the bearing (2) is fixedly connected to a rotating block (3), the upper and lower sides of the rotating block (3) are fixedly connected to an internal threaded cylinder (4), the inner wall of the hollow cylinder (1) is fitted with a first sliding column (5), the upper surface of the first sliding column (5) is fixedly connected to a top block (6), the inner wall of the hollow cylinder (1) is fitted with a second sliding column (7), the bottom of the second sliding column (7) is fixedly connected to a sleeve head ( 8), the upper surface of the sleeve head (8) and the bottom of the top block (6) are fixedly connected with an external threaded tube (9), the side of the external threaded tube (9) away from the rotating block (3) is provided with a first air groove (10), the surface of the hollow tube (1) is provided with a sliding hole (11), the inner wall of the external threaded tube (9), the surface of the first sliding column (5) and the surface of the second sliding column (7) are fixedly connected with a connecting column (12), and the surface of the connecting column (12) is in contact with the inner wall of the sliding hole (11).

2. A telescopic sleeve according to claim 1, characterized in that: A clamping groove (13) is provided on the upper surface of the top block (6), and a regular hexagonal groove (14) is provided on the bottom of the sleeve head (8).

3. A telescopic sleeve according to claim 1, characterized in that: The upper surface of the sleeve head (8) and the bottom of the top block (6) are both fixedly connected with a sealing cylinder (15); a second air groove (16) is provided on the side of the sealing cylinder (15) away from the rotating block (3); the inner wall of the sealing cylinder (15) contacts the surface of the internal threaded cylinder (4); and the surface of the sealing cylinder (15), the upper surface of the sleeve head (8) and the bottom of the top block (6) are all fixedly connected with a cylindrical dustproof net (17).

4. A telescopic sleeve according to claim 3, characterized in that: The front surface of the sealing cylinder (15) is provided with a strip hole (18), the inner wall of the strip hole (18) is fixedly connected with a transparent scale (19), the surface of the internal thread cylinder (4) is provided with an annular groove (20), and the inner wall of the annular groove (20) and the inner wall of the sealing cylinder (15) are both fitted with an indicator ring (21).

5. A telescopic sleeve according to claim 1, characterized in that: The cross section of the rotating block (3) is a regular hexagon, and the center of the rotating block (3) coincides with the center of the hollow cylinder (1).

6. A telescopic sleeve according to claim 1, characterized in that: An anti-slip sleeve (22) is bonded to the surface of the rotating block (3).

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