Sleeve capable of stopping inside and moving outside and special tool

Abstract

An inner stopping and outer moving sleeve is used for limiting a fixing part of a fastening assembly and tightening a rotating part of the fastening assembly when the fastening assembly is tightened through a matched special tool, the inner stopping and outer moving sleeve comprises an outer moving sleeve body and an inner stopping sleeve body, the inner stopping sleeve body is arranged in the outer moving sleeve body in a sleeved mode, and the inner stopping sleeve body comprises a first sleeve body and a second sleeve body; the first sleeve comprises a first fixing connector and a first matching connector. The second sleeve comprises a second fixing connector and a second matching connector. The first sleeve and the second sleeve are connected through the first matching interface and the second matching interface, the first sleeve is provided with a first through hole, the second sleeve is provided with a second through hole, the first through hole is matched with the second through hole, and the fixing part is arranged in the first through hole and the second through hole; wherein the first fixing interface is connected with the special tool, and the second fixing interface is connected with the fixing part; and the outer movable sleeve is connected with the special tool and the rotating part of the fastening assembly. The utility model further provides a special tool.

Description

Technical Field

[0001] The utility model relates to a special tool for a vehicle assembly line, in particular to a special tool for installing fasteners. Background Art

[0002] Special tools such as internal stop sleeves commonly used on current production lines have a short service life and are prone to cracking after less than 5,000 uses. This not only causes shutdowns of production lines and other related equipment, but also poses the risk of quality issues such as unqualified tightening torque. Therefore, this problem needs to be solved. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes an inner stop outer moving sleeve, which is used to limit the fixed part of the fastening component and tighten the rotating part of the fastening component when a special tool is used to tighten the fastening component. The inner stop outer moving sleeve includes an outer moving sleeve and an inner stop sleeve. The inner stop sleeve is sleeved in the outer moving sleeve.

[0004] Wherein, the inner stop sleeve comprises:

[0005] A first sleeve comprising a first fixing interface and a first mating interface;

[0006] A second sleeve, comprising a second fixing interface and a second mating interface;

[0007] The first sleeve and the second sleeve are connected via the first mating interface and the second mating interface, the first sleeve has a first through hole, the second sleeve has a second through hole, the first through hole and the second through hole match each other, and the fixing member is disposed in the first through hole and the second through hole;

[0008] The first fixing interface is connected to the special tool, and the second fixing interface is connected to the fixing portion of the fastening assembly; the outer movable sleeve is connected to the special tool and the rotating portion of the fastening assembly.

[0009] In one embodiment of the above-mentioned inner-stop outer-movement sleeve, the outer side wall of the second sleeve has an annular groove around the second through hole, and the annular groove is used to set a fixing ring to prevent the fixing member from falling off.

[0010] In one embodiment of the above-mentioned inner-stop outer-movable sleeve, the fixing member is a pin.

[0011] In one embodiment of the above-mentioned inner-stop outer-movable sleeve, the first fixing interface is a spline shaft, and the first mating interface is a regular polygonal column.

[0012] In one embodiment of the above-mentioned inner-stop outer-moving sleeve, the second mating interface is a regular polygonal cylindrical sleeve matching the first mating interface, and the second fixing interface is a regular polygonal cylindrical sleeve.

[0013] The utility model also provides a special tool for tightening a fastening assembly, comprising a third fixing interface, a fourth fixing interface and an inner stop outer movable sleeve, wherein the inner stop outer movable sleeve comprises an outer movable sleeve and an inner stop sleeve, wherein the inner stop sleeve is sleeved in the outer movable sleeve.

[0014] Wherein, the inner stop sleeve comprises:

[0015] A first sleeve comprising a first fixing interface and a first mating interface;

[0016] A second sleeve, comprising a second fixing interface and a second mating interface;

[0017] The first sleeve and the second sleeve are connected via the first mating interface and the second mating interface, the first sleeve has a first through hole, the second sleeve has a second through hole, the first through hole and the second through hole match each other, and the fixing member is disposed in the first through hole and the second through hole;

[0018] The third fixing interface is connected to the first fixing interface, the second fixing interface is connected to the fixing portion of the fastening assembly; the outer movable sleeve is connected to the fourth fixing interface and the rotating portion of the fastening assembly.

[0019] In one embodiment of the above-mentioned special tool, the outer wall of the second sleeve has an annular groove around the second through hole, and the annular groove is used to set a fixing ring to prevent the fixing member from falling off.

[0020] In one embodiment of the above-mentioned special tool, the fixing member is a pin.

[0021] In one embodiment of the above-mentioned special tool, the first fixing interface is a spline shaft, and the first mating interface is a regular polygonal column.

[0022] In one embodiment of the above-mentioned special tool, the second mating interface is a regular polygonal cylindrical sleeve matching the first mating interface, and the second fixing interface is a regular polygonal cylindrical sleeve.

[0023] The inner stop sleeve and the special tool provided by the utility model, wherein the inner stop sleeve is designed in a split manner, greatly improves the service life of the inner stop sleeve and the inner stop outer moveable sleeve, while improving the stability of the equipment using the inner stop sleeve and the inner stop outer moveable sleeve, and also reduces the production cost of the inner stop sleeve and the inner stop outer moveable sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 FIG. 1 is an axial side view of an inner stop sleeve according to an embodiment of the present invention.

[0025] Figure 2 A front view of an inner stop sleeve according to another embodiment of the present invention is shown.

[0026] Figure 3 A schematic diagram illustrating a special tool tightening a fastening component through an inner-stop outer-movable sleeve in one embodiment of the present invention is shown.

[0027] Wherein, the reference numerals:

[0028] 1…First sleeve

[0029] 11…First fixed interface

[0030] 12…First mating interface

[0031] 13…First through hole

[0032] 2…Second sleeve

[0033] 21…Second fixed interface

[0034] 22…Second mating interface

[0035] 23…Second through hole

[0036] 3…Annular groove

[0037] 10…Internal stop sleeve

[0038] 20…External sleeve

[0039] 30…Special tools

[0040] 31…Third fixed interface

[0041] 32…Fourth fixed interface

[0042] 40…Fastening components

[0043] 41…Activities Department

[0044] 42…Fixed part

[0045] 50…Second component

[0046] 100…Internal stop external moving sleeve DETAILED DESCRIPTION

[0047] The following is a detailed description of the technical solution of the present invention in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and beneficial technical effects of the present invention. Obviously, the specific embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments disclosed in the present invention, all other embodiments obtained by ordinary technicians in this field without expending creative work also fall within the scope disclosed by the technical solution of the present invention.

[0048] It should be noted that, in this specification, relational terms such as first and second, etc. are used only 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 "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, article or device. In the absence of further restrictions, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0049] Certain terms are used in this specification and the appended claims to refer to specific components or parts. Persons skilled in the art will understand that technology users or manufacturers may use different nouns or terms to refer to the same component or part. This specification and the appended claims do not distinguish components or parts based on differences in name, but rather on differences in their functions.

[0050] In this utility model, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the utility model and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0051] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0052] In order to better understand the technical solution of this utility model, please refer to Figures 1 to 3 In order to solve the technical problems of the short service life of the current inner stop sleeve 10 and the equipment downtime and unqualified tightening torque caused by the short service life, the utility model provides an inner stop outer moving sleeve 100, which is used to limit the fixing part 42 of the fastening component 40 and tighten the rotating part 41 of the fastening component 40 when the special tool 30 tightens the fastening component 40. The special tool 30 fastens the fastening component 40 to the second component 50 through the inner stop outer moving sleeve 100 in a rotating manner. The inner stop outer moving sleeve 100 includes an outer moving sleeve 20 and an inner stop sleeve 10. The inner stop sleeve The sleeve 10 is sleeved in the outer moving sleeve 20, and the inner stop sleeve includes a first sleeve 1 and a second sleeve 2. The first sleeve 1 includes a first fixed interface 11 and a first mating interface 12; the second sleeve 2 includes a second fixed interface 21 and a second mating interface 22; the first sleeve 1 and the second sleeve 2 are plugged into each other through the first mating interface 12 and the second mating interface 22. The first sleeve 1 has a first through hole 13, and the second sleeve 2 has a second through hole 23. The first through hole 13 and the second through hole 23 match each other, and the fixing parts are arranged in the first through hole 13 and the second through hole 23.

[0053] The special tool 30 is connected to the first fixed interface 11 of the first sleeve 1 and the outer movable sleeve 20; the second fixed interface 21 is connected to the fixed part 42 of the fastening assembly 40, and the outer movable sleeve 20 is connected to the special tool 30 and the rotating part 41 of the fastening assembly 40. When the special tool 30 rotates, it drives the outer movable sleeve 20 to rotate, and then the outer movable sleeve 20 drives the movable part 41 of the fastening assembly 40 to rotate and be fastened to the second component 50. At the same time, the fixed part 42 of the fastening assembly 40 remains fixed under the action of the first sleeve 1 and the second sleeve 2 of the inner stop sleeve 10.

[0054] In this embodiment, after the inner stop sleeve 10 adopts a split design, the second sleeve 2 in the upper part of the inner stop sleeve 10 can use a standard machine sleeve. The outer wall of the machine sleeve is thicker than the outer wall of the original integrated inner stop sleeve 10, so it has a longer service life.

[0055] In one embodiment, the outer wall of the second sleeve 2 has an annular groove 3 around the second through hole 23. This groove 3 is used to accommodate a retaining ring to prevent the retaining member from falling out. In this embodiment, the provision of a retaining ring in the annular groove 3 further enhances the stability of the inner stop sleeve 10, thereby increasing its service life.

[0056] In one embodiment, the fixing member is a pin, which is disposed in the first through hole 13 and the second through hole 23 (the pin is not shown in the drawings).

[0057] In one embodiment, the first fixing interface 11 is a spline shaft.

[0058] In one embodiment, the first mating interface 12 is a regular polygonal column. In another embodiment, the first mating interface 12 is a square head.

[0059] In one embodiment, the second mating interface 22 is a regular polygonal cylindrical sleeve that mates with the first mating interface 12. In another embodiment, the second mating interface 22 is a square groove that corresponds to the square head. Both the first mating interface 12 and the second mating interface 22 can be modified to other shapes based on actual needs, and the present invention is not limited thereto.

[0060] In one embodiment, the second fixing interface 21 is a regular polygonal cylindrical sleeve corresponding to the fixing portion 42 of the fastening assembly 40, and the fixing portion 42 of the fastening assembly 40 is a regular polygonal cylindrical body. In another embodiment, the fixing portion 42 of the fastening assembly 40 is a regular hexagonal head, and the second fixing interface 21 is a regular hexagonal groove corresponding to the fixing portion 42 of the fastening assembly 40. The fixing portion 42 of the fastening assembly 40 and the second fixing interface 21 can be modified to other shapes according to actual needs, and the present invention is not limited to this.

[0061] In one embodiment, the surface roughness of the first sleeve 1 and / or the second sleeve 2 is 3.2 mm.

[0062] In one embodiment, the heat treatment process of the first sleeve 1 and / or the second sleeve 2 is quenching, and the Rockwell hardness after quenching is 48 to 52 HRC, and the surface treatment process is nitriding blackening, thereby increasing the hardness of the first sleeve 1 and / or the second sleeve 2 and improving the wear resistance.

[0063] In one embodiment, the first sleeve 1 and / or the second sleeve 2 is made of high-strength alloy steel 42crmov.

[0064] In one embodiment, the peripheral sharp-angle deburring chamfer of the first sleeve 1 and / or the second sleeve 2 is C=0.5mm, where C represents 45 degrees and 0.5mm is the length of the right angle side of the chamfer. The peripheral sharp-angle deburring chamfer can reduce burrs on the workpiece, is not easy to scratch hands, and is easy to assemble.

[0065] In one embodiment, the second sleeve 2 may also use a standard 3 / 8 inch sleeve, which is convenient for replacement and can effectively reduce costs.

[0066] Please refer to Figure 3The present invention also provides a special tool 30 for tightening the fastening assembly 40 through the above-mentioned inner stop outer moving sleeve 100. The special tool 30 includes a third fixing interface 31, a fourth fixing interface 32 and the above-mentioned inner stop outer moving sleeve 100 (the structure of the inner stop outer moving sleeve 100 has been introduced above and will not be repeated here). The third fixing interface 31 is connected to the first fixing interface 11, and the fourth fixing interface 32 is connected to the outer moving sleeve 20. When the special tool 30 rotates, the fourth fixing interface 32 drives the outer moving sleeve 20 to rotate, and then the outer moving sleeve 20 drives the movable part 41 of the fastening assembly 40 to rotate and fasten it to the second component 50. At the same time, the fixed part 42 of the fastening assembly 40 is kept from rotating under the action of the first sleeve 1 and the second sleeve 2 of the inner stop sleeve 10.

[0067] In one embodiment, the third fixing interface 31 of the special tool 30 is a spline sleeve that cooperates with the first fixing interface 11 (spline shaft).

[0068] In one embodiment, the specialized tool 30 is a wrench, the second component 50 is a steering knuckle or stabilizer link, the fixed portion 42 of the fastening assembly 40 is a bolt, and the movable portion 41 is a nut. During the tightening process, the inner stop sleeve 10 connects the bolt and the wrench's splined sleeve, securing the bolt. Rotation of the wrench drives the outer movable sleeve 20, which in turn rotates the nut and secures it to the steering knuckle or stabilizer link. In one embodiment, the specialized tool 30 is used by an industrial robot to tighten the fastening assembly 40 to the second component 50.

[0069] Compared with the prior art, the inner stop sleeve 100 and the special tool 30 provided by the present invention, in which the inner stop sleeve is designed in a split manner, greatly improve the service life of the inner stop sleeve 10 and the inner stop outer moveable sleeve 100, while improving the stability of the equipment using the inner stop sleeve 10 and the inner stop outer moveable sleeve 100, and reducing the production cost of the inner stop sleeve 10 and the inner stop outer moveable sleeve 100.

[0070] The above-disclosed contents are only preferred feasible embodiments of the present invention and do not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the contents of the description and drawings of the present invention fall within the scope of the patent application of the present invention.

Claims

1. An inner stop outer moving sleeve, used to limit the fixed part of a fastening assembly and tighten the rotating part of the fastening assembly when a special tool is used to tighten the fastening assembly, characterized in that: The inner stop outer moving sleeve comprises an outer moving sleeve and an inner stop sleeve, wherein the inner stop sleeve is sleeved in the outer moving sleeve. Wherein, the inner stop sleeve comprises: A first sleeve comprising a first fixing interface and a first mating interface; A second sleeve, comprising a second fixing interface and a second mating interface; The first sleeve and the second sleeve are connected via the first mating interface and the second mating interface, the first sleeve has a first through hole, the second sleeve has a second through hole, the first through hole and the second through hole match each other, and the fixing member is disposed in the first through hole and the second through hole; The first fixing interface is connected to the special tool, and the second fixing interface is connected to the fixing portion of the fastening assembly; the outer movable sleeve is connected to the special tool and the rotating portion of the fastening assembly.

2. The inner stop outer moving sleeve according to claim 1, characterized in that: The outer wall of the second sleeve has an annular groove around the second through hole, and the annular groove is used to set a fixing ring to prevent the fixing member from falling off.

3. The inner stop outer moving sleeve according to claim 1 or 2, characterized in that: The fixing member is a pin.

4. The inner stop outer moving sleeve according to claim 1 or 2, characterized in that: The first fixing interface is a spline shaft, and the first matching interface is a regular polygonal column.

5. The inner stop outer moving sleeve according to claim 1 or 2, characterized in that: The second mating interface is a regular polygonal columnar sleeve that matches the first mating interface, and the second fixing interface is a regular polygonal columnar sleeve.

6. A special tool for tightening a fastening assembly, characterized in that: It includes a third fixed interface, a fourth fixed interface and an inner stop outer movable sleeve, wherein the inner stop outer movable sleeve includes an outer movable sleeve and an inner stop sleeve, and the inner stop sleeve is sleeved in the outer movable sleeve. Wherein, the inner stop sleeve comprises: A first sleeve comprising a first fixing interface and a first mating interface; A second sleeve, comprising a second fixing interface and a second mating interface; The first sleeve and the second sleeve are connected via the first mating interface and the second mating interface, the first sleeve has a first through hole, the second sleeve has a second through hole, the first through hole and the second through hole match each other, and the fixing member is disposed in the first through hole and the second through hole; The third fixing interface is connected to the first fixing interface, the second fixing interface is connected to the fixing portion of the fastening assembly; the outer movable sleeve is connected to the fourth fixing interface and the rotating portion of the fastening assembly.

7. The special tool according to claim 6, characterized in that The outer wall of the second sleeve has an annular groove around the second through hole, and the annular groove is used to set a fixing ring to prevent the fixing member from falling off.

8. The special tool according to claim 6 or 7, characterized in that: The fixing member is a pin.

9. The special tool according to claim 6 or 7, characterized in that: The first fixed interface is a spline shaft, the first matching interface is a regular polygonal column, and the third fixed interface is a spline sleeve that matches the first fixed interface.

10. The special tool according to claim 6 or 7, characterized in that: The second mating interface is a regular polygonal columnar sleeve that matches the first mating interface, and the second fixing interface is a regular polygonal columnar sleeve.

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