Magnetic sleeve

Abstract

The invention provides a magnetic sleeve, relates to the technical field of disassembly and assembly tools, and solves the technical problems that in the prior art, the position of a magnet in an existing magnetic sleeve is fixed, a bolt or a nut is difficult to be effectively adsorbed due to surface coating or corrosion and the like, and operation is affected. The device comprises a mounting part which is detachably connected with the output end of a driving device; the dismounting part and the mounting part are integrally arranged, and the dismounting part is located at the end away from the driving device; and the adsorption assembly is arranged at one end, far away from the driving device, of the dismounting part, and is partially adjustably arranged in the dismounting part. Through the synergistic effect of the mounting part, the dismounting part and the adsorption assembly, the basic function of the sleeve is kept, the mounting part is detachably connected with the output end of the driving device, and the dismounting part is used for adsorbing and rotating a bolt or a nut; and the adsorption capacity and the operation convenience are improved when a bolt or a nut with a surface coating or corrosion is treated.

Description

Technical Field

[0001] The invention relates to the technical field of disassembly and assembly tools, in particular to a magnetic sleeve. Background Art

[0002] A wrench is a tool for tightening and loosening bolts and nuts, including lithium battery wrenches, plug-in electric wrenches and pneumatic wrenches, etc. It is mainly used for the initial tightening and final tightening of large hexagonal high-strength bolts installed in steel structure bridges, factory buildings, chemical industry, power generation equipment, and the initial tightening of torsion shear type high-strength bolts, as well as occasions with strict requirements on the torque or axial force of bolt fasteners.

[0003] A detachable sleeve is usually provided between the output end of a conventional electric wrench and the nut to be disassembled. By replacing different sleeves, the electric wrench can be adapted to different usage scenarios.

[0004] The applicant has found that the prior art has at least the following technical problems: the position of the magnet in the existing magnetic sleeve is fixed, and the bolts or nuts are difficult to be effectively adsorbed due to surface coating or corrosion, which affects the operation.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a magnetic sleeve to solve the technical problem that the position of the magnet in the existing magnetic sleeve is fixed, and the bolts or nuts are difficult to be effectively adsorbed due to surface coating or corrosion, which affects the operation. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention provides a magnetic sleeve, comprising a mounting portion, which is detachably connected to the output end of a driving device; a disassembly portion, which is integrally arranged with the mounting portion and is located at an end away from the driving device; and an adsorption assembly, which is arranged at an end of the disassembly portion away from the driving device and is partially adjustably arranged inside the disassembly portion.

[0009] Preferably, a first groove is formed at the end of the mounting portion along the axial direction, and a first rounded corner is formed at the edge to match the output end of the driving device.

[0010] Preferably, a limiting groove is provided at the end of the disassembly portion along the axial direction, the cross-section of the limiting groove is hexagonal, and a second rounded corner is formed at the corner.

[0011] Preferably, the limiting groove is provided with an installation cavity along the axial direction, and the opening end of the installation cavity forms a second groove, the adsorption assembly includes a first magnet, a second magnet and an adjustment part, the first magnet is arranged on the second groove and protrudes from the second groove; the magnetic poles of the first magnet and the second magnet are opposite to each other; the adjustment part includes a gear set and a rack, one end of the rack is connected to the second magnet, and the other end is slidably matched with the slide groove in the installation cavity, the disassembly part is provided with a installation groove, and is connected to the installation cavity; the gear set includes a driving gear and a driven gear, the driven gear includes a first tooth portion and a second tooth portion, the driving gear is rotatably connected to the installation groove through a rotating shaft, and meshes with the first tooth portion, and the second tooth portion meshes with the rack.

[0012] Preferably, it also includes a locking piece, one end of which is rotatably connected to the outer wall of the disassembly part through a rotating shaft, and the other end is detachably connected to the outer wall of the disassembly part through a bolt. The locking piece is arranged corresponding to the driving gear and has locking teeth that are adapted to the teeth of the driving gear.

[0013] Preferably, a notch is formed at the open end of the second groove, and a protrusion matching the notch of the second groove is provided on the outer wall of the first magnet.

[0014] Preferably, a side wall of the mounting portion is provided with a through hole, and the through hole is opened in a radial direction.

[0015] Preferably, the length of the disassembly portion in the axial direction is not less than that of the installation portion.

[0016] Preferably, the outer wall of the disassembly portion is provided with a plurality of weight-reducing structures.

[0017] The preferred technical solution of the present invention can at least produce the following technical effects:

[0018] The present invention effectively avoids the technical problems existing in the prior art that the position of the magnet in the existing magnetic sleeve is fixed, and the bolts or nuts are difficult to be effectively adsorbed due to surface coating or corrosion, which affects the operation. The present invention provides a magnetic sleeve, including a mounting portion, which is detachably connected to the output end of a driving device; a disassembly portion, which is integrated with the mounting portion and is located at an end away from the driving device; and an adsorption component, which is arranged at an end of the disassembly portion away from the driving device and is partially adjustably arranged inside the disassembly portion. Through the synergistic effect of the mounting portion, the disassembly portion and the adsorption component, the present invention not only maintains the basic functions of the sleeve, but also the mounting portion is detachably connected to the output end of the driving device, the disassembly portion is used to adsorb and rotate the bolts or nuts, and the adsorption component is adjustably arranged, thereby improving the adsorption capacity and ease of operation when handling bolts or nuts with surface coatings or corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of a magnetic sleeve provided by the present invention;

[0021] Figure 2 It is a structural schematic diagram of a mounting portion of a magnetic sleeve provided by the present invention;

[0022] Figure 3 It is a structural schematic diagram of a disassembly portion of a magnetic sleeve provided by the present invention;

[0023] Figure 4 It is a partial cross-sectional view of a disassembly portion of an adsorption assembly of a magnetic sleeve provided by the present invention.

[0024] In the figure:

[0025] 1. Mounting portion; 11. First groove; 111. First fillet; 12. Through hole; 2. Disassembly portion; 21. Limiting groove; 211. Second fillet; 22. Second groove; 221. Notch; 23. Mounting cavity; 24. Mounting groove; 25. Slide groove; 3. First magnet; 31. Protrusion; 4. Second magnet; 5. Rack; 6. Driving gear; 7. Driven gear; 71. First tooth portion; 72. Second tooth portion; 8. Locking piece; 81. Locking tooth; 9. Bolt. DETAILED DESCRIPTION

[0026] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0027] like Figure 1-Figure 4 As shown, the present invention provides a magnetic sleeve, including a mounting portion 1, which is detachably connected to the output end of a driving device; a disassembly portion 2, which is integrally arranged with the mounting portion 1 and is located at an end away from the driving device; an adsorption component, which is arranged at an end of the disassembly portion 2 away from the driving device and is partially adjustably arranged inside the disassembly portion 2.

[0028] The driving device includes power structures in the prior art such as lithium battery wrenches, plug-in electric wrenches, manual wrenches and pneumatic wrenches. The sleeve can be sleeved on the output end of the wrench. When in use, the mounting portion 1 is fixed on the output end of the wrench, and the disassembly portion 2 is sleeved on the disassembled bolt 9 or nut. The sleeve is driven to rotate by the rotation of the output end of the wrench, and the bolt 9 or nut is driven to rotate when the sleeve rotates, thereby tightening and loosening the bolt 9 or nut. At the same time, the adsorption component can adsorb the bolt 9 or nut, so that the bolt 9 and the nut will not fall off when they are screwed out, which is more convenient to use.

[0029] As an optional implementation, Figure 1 , Figure 2 As shown, a first groove 11 is formed at the end of the mounting portion 1 along the axial direction, and the first groove 11 is adapted to the output end of the driving device.

[0030] Furthermore, the first groove 11 is a rectangular or square groove structure, and first rounded corners 111 are formed at the corners to facilitate plugging and matching with the output end of the wrench, so that when the wrench rotates, the first groove 11 can drive the sleeve to rotate synchronously as a whole.

[0031] As an optional implementation, Figure 1 , Figure 3 , Figure 4 As shown, a limiting groove 21 is provided at the end of the disassembly portion 2 along the axial direction. The cross-section of the limiting groove 21 is hexagonal, and second fillets 211 are formed at the corners to facilitate matching with the outer contour of a common hexagonal bolt 9 or nut, so that the sleeve can easily screw in or out the bolt 9 or nut when rotating.

[0032] As an optional implementation, Figure 3 , Figure 4 As shown, the limiting groove 21 is provided with an installation cavity 23 along the axial direction, and the opening end of the installation cavity 23 forms a second groove 22. The adsorption component includes a first magnet 3, a second magnet 4 and an adjustment part. The first magnet 3 is arranged on the second groove 22 and protrudes from the second groove 22; the magnetic poles of the first magnet 3 and the second magnet 4 are opposite to each other; the adjustment part includes a gear set and a rack 5, one end of the rack 5 is connected to the second magnet 4, and the other end is slidably matched with the slide groove 25 in the installation cavity 23, and a mounting groove 24 is provided on the disassembly part 2, and is connected with the installation cavity 23; the gear set includes a driving gear 6 and a driven gear 7, and the driven gear 7 includes a first tooth portion 71 and a second tooth portion 72. The driving gear 6 is rotatably connected to the installation groove 24 through a rotating shaft and meshes with the first tooth portion 71, and the second tooth portion 72 meshes with the rack 5.

[0033] The function of the adsorption component is to adsorb the bolt 9 or the nut to prevent it from falling when the sleeve rotates and drives the bolt 9 or the nut to be screwed out.

[0034] The first magnet 3 is arranged on the second groove 22 and protrudes from the second groove 22. Such an arrangement makes the adsorption surface of the first magnet 3 closer to the surface of the bolt 9 or the nut, thereby making it easier to generate adsorption force.

[0035] The magnetic poles of the second magnet 4 and the first magnet 3 are opposite to each other, and the magnitude of the adsorption force can be adjusted by adjusting the distance between the two.

[0036] By manually rotating the driving gear 6, the first tooth portion 71 of the driven gear 7 is driven to rotate, thereby driving the entire driven gear 7 to rotate. Since the second tooth portion 72 of the driven gear 7 is meshed with the rack 5, the rotational motion of the driven gear 7 is converted into a linear sliding motion of the rack 5, driving the second magnet 4 to approach or move away from the first magnet 3, thereby changing the size of the adsorption force between the two, so that the user can adjust the size of the adsorption force according to actual needs.

[0037] When the sleeve is not in use, the second magnet 4 is located relatively far away from the first magnet 3, and at this time, the adsorption force is relatively weak.

[0038] When the bolt 9 or nut needs to be adsorbed, the user can first manually rotate the driving gear 6 to drive the driven gear 7 to rotate, and then drive the rack 5 to drive the second magnet 4 to approach the first magnet 3. Due to the principle that opposite poles of magnets attract each other, the adsorption force between the two is enhanced, and the bolt 9 or nut can be firmly adsorbed.

[0039] When the bolt 9 or nut is completely unscrewed and needs to be removed, the driving gear 6 can be rotated again to drive the driven gear 7 to rotate, thereby driving the rack 5 to drive the second magnet 4 away from the first magnet 3, thereby weakening the adsorption force, so that the bolt 9 or nut can be easily removed, thereby improving work efficiency and safety.

[0040] The slide groove 25 extends along the axial direction of the mounting cavity 23 , and functions to provide a clear moving path for the rack 5 , provide necessary support for the rack 5 , and limit the moving range of the rack 5 .

[0041] As an optional implementation, Figure 4 As shown, it also includes a locking piece 8, one end of which is rotatably connected to the outer wall of the disassembly part 2 through a rotating shaft, and the other end is detachably connected to the outer wall of the disassembly part 2 through a bolt 9. The locking piece 8 is arranged corresponding to the driving gear 6 and has a locking tooth 81 adapted to the teeth of the driving gear 6.

[0042] Furthermore, the locking member 8 has an arc-shaped locking surface matched with the driving gear 6 , and the locking teeth 81 are arranged on the locking surface.

[0043] When it is necessary to lock the relative position of the second magnet 4 and the first magnet 3, that is, to lock the gear 81, it is only necessary to rotate the locking member 8 to a locking position where it meshes with the teeth of the driving gear 6, and fix its wing plate to the outer wall of the disassembly portion 2 using bolts 9. Since the locking teeth 81 of the locking member 8 are tightly meshed with the gear, and the position of the locking member 8 is fixed by the bolts 9, the gear cannot be easily rotated even under the action of external force, so that the relative position between the second magnet 4 and the first magnet 3 remains unchanged, thereby ensuring the stability of the adsorption force.

[0044] As an optional implementation, Figure 3 As shown, a notch 221 is formed at the open end of the second groove 22 , and a protrusion 31 matching the notch 221 of the second groove 22 is formed on the outer wall of the first magnet 3 .

[0045] In order to fix the first magnet 3 and the inner wall of the second groove 22 together to avoid falling off during use, a notch 221 and a protrusion 31 are provided to form a limiting structure between the two, thereby achieving the purpose of fixing.

[0046] As an optional implementation, Figure 1 As shown, a through hole 12 is formed on the side wall of the mounting portion 1, and the through hole 12 is formed in a radial direction.

[0047] Furthermore, the side length of the first groove 11 is 12.5 mm-12.7 mm, and the aperture of the through hole 12 is 5 mm-7 mm.

[0048] By inserting a pin into the through hole 12, the sleeve and the output end of the wrench are further fixed together.

[0049] The sleeve has a through hole 12 which is an annular groove body that is recessed inward. When the sleeve is installed on the output end of the wrench, after the latch is inserted in the through hole 12, a leather ring can also be set in the annular groove to further improve the effect of preventing the fall-off.

[0050] As an optional implementation, Figure 1 As shown, the length of the disassembly portion 2 in the axial direction is not less than the length of the installation portion 1 in the axial direction.

[0051] like Figure 1 As shown, in order to adapt to different usage scenarios and usage environments, the outer contour and the length of the axial direction of the disassembly part 2 can be adjusted to adapt to different usage environments.

[0052] The axial length of the magnetic sleeve is at least 38 mm. In order to adapt to different usage scenarios, the axial length of the magnetic sleeve can reach 300 mm.

[0053] In order to adapt to different usage scenarios and enable the sleeve to adapt to bolts 9 or nuts of different specifications, the aperture of the limit groove 21 changes with the specifications of the sleeve. However, it is worth noting that even for sleeves of different specifications, the mounting part 1, in order to adapt to the output end of the wrench, the aperture of the first groove 11 is fixed, preferably 12.5 mm.

[0054] The magnetic sleeve is a half lithium electromagnetic sleeve, specifically, a (12.5) 1 / 2 lithium electromagnetic sleeve, which can be adapted to half-inch wrenches of different driving modes.

[0055] As an optional implementation, the outer wall of the disassembly portion 2 is provided with a plurality of weight-reducing structures.

[0056] Furthermore, the weight-reducing structure includes grooves, so that the sleeve can meet different usage scenarios while reducing a certain amount of weight while ensuring its own strength, making it more convenient to use.

[0057] As an optional implementation, a magnetic shielding layer is provided in the non-working area of ​​the sleeve to reduce interference with surrounding metal objects. The non-working area specifically refers to a portion of the sleeve that is not directly involved in the tightening and loosening operation of the bolt 9 or nut and is not directly connected to the output end of the drive device, and can be specifically designed according to usage requirements.

[0058] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0059] In the description of the present invention, it should be noted that, unless otherwise specified, the meaning of "plurality" is two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0060] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "an example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0062] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A magnetic sleeve, characterized in that: include A mounting portion, detachably connected to an output end of the driving device; A disassembly portion, which is integrated with the installation portion and is located at an end away from the driving device; The adsorption assembly is arranged at one end of the disassembly portion away from the driving device, and is partially adjustably arranged inside the disassembly portion.

2. A magnetic sleeve according to claim 2, characterized in that: The end of the mounting portion is provided with a first groove along the axial direction, and a first rounded corner is formed at the edge, and is adapted to the output end of the driving device.

3. A magnetic sleeve according to claim 2, characterized in that: A limiting groove is provided at the end of the disassembly portion along the axial direction, the cross section of the limiting groove is hexagonal, and a second rounded corner is formed at the corner.

4. A magnetic sleeve according to claim 3, characterized in that: The limiting groove is provided with an installation cavity along the axial direction, and the opening end of the installation cavity forms a second groove. The adsorption assembly includes a first magnet, a second magnet and an adjustment part. The first magnet is arranged on the second groove and protrudes from the second groove. The magnetic poles of the first magnet and the second magnet are opposite to each other. The adjustment part includes a gear set and a rack. One end of the rack is connected to the second magnet, and the other end is slidably matched with the slide groove in the installation cavity. The disassembly part is provided with an installation groove and is connected to the installation cavity. The gear set includes a driving gear and a driven gear. The driven gear includes a first tooth portion and a second tooth portion. The driving gear is rotatably connected to the installation groove through a rotating shaft and meshes with the first tooth portion, and the second tooth portion meshes with the rack.

5. A magnetic sleeve according to claim 4, characterized in that: It also includes a locking piece, one end of which is rotatably connected to the outer wall of the disassembly part through a rotating shaft, and the other end is detachably connected to the outer wall of the disassembly part through a bolt. The locking piece is arranged corresponding to the driving gear and has locking teeth that are adapted to the teeth of the driving gear.

6. A magnetic sleeve according to claim 4, characterized in that: A notch is formed at the opening end of the second groove, and a protrusion matching the notch of the second groove is formed on the outer wall of the first magnet.

7. A magnetic sleeve according to claim 2, characterized in that: A through hole is formed on the side wall of the mounting portion, and the through hole is formed in a radial direction.

8. A magnetic sleeve according to claim 1, characterized in that: The length of the disassembly portion in the axial direction is not less than that of the installation portion.

9. A magnetic sleeve according to claim 7, characterized in that: The outer wall of the disassembly portion is provided with a plurality of weight-reducing structures.

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