Nuts

Abstract

The present invention provides a nut, comprising: a nut body, a threaded hole is provided inside the nut body to cooperate with a screw rod; a pressing pad, the pressing pad is movably arranged relative to the nut body; a wrench assembly and an axial force adjustment assembly, the wrench assembly is drivingly connected to the axial force adjustment assembly, the axial force adjustment assembly is arranged between the pressing pad and the nut body, and the wrench assembly reduces the axial force on the nut body by adjusting the position of the axial force adjustment assembly. The nut of the present invention solves the problem that nuts in the prior art are difficult to quickly disassemble.

Description

Technical Field

[0001] The invention relates to the technical field of nut manufacturing, and in particular to a nut. Background Art

[0002] In the prior art, when tightening objects, nuts and screws are generally used to fix multiple objects together. Especially for nuts that are tightened tightly, it is difficult to loosen them quickly due to the large axial force. Summary of the invention

[0003] The main purpose of the present invention is to provide a nut to solve the problem that the nut in the prior art is difficult to quickly disassemble.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a nut is provided, comprising: a nut body, a threaded hole is provided inside the nut body to cooperate with a screw rod; a clamping pad, the clamping pad is movably arranged relative to the nut body; a wrench assembly and an axial force adjustment assembly, the wrench assembly is drivingly connected to the axial force adjustment assembly, the axial force adjustment assembly is arranged between the clamping pad and the nut body, and the wrench assembly reduces the axial force on the nut body by adjusting the position of the axial force adjustment assembly.

[0005] Furthermore, the axial force adjustment component includes: a sliding sleeve, one end of the wrench assembly is abutted against the sliding sleeve, wherein the sliding sleeve is movably sleeved between the nut body and the clamping pad in the axial direction, and forms a first space together with the nut body and the clamping pad; a sliding member, the sliding member is movably arranged in the first space and abuts against the surface of the sliding sleeve facing the first space, and the height of the first space gradually increases in the direction approaching the sliding sleeve, so that when the sliding member moves in the direction toward the sliding sleeve, the extrusion force of the sliding member on the nut body and the clamping pad is reduced; an elastic member, the elastic member is arranged between the sliding sleeve and the clamping pad and / or between the sliding sleeve and the nut body and / or between the nut body and the sliding member.

[0006] Furthermore, the inner wall of the sliding sleeve is of variable cross-section, and the sliding member moves along the variable cross-section, so that the distance of the sliding member relative to the center line of the sliding sleeve changes.

[0007] Furthermore, the sliding member includes a plurality of balls, and a first annular slope is provided on the pressure pad. The plurality of balls are evenly distributed on the first annular slope to roll along the radial direction of the first annular slope. The first annular slope causes the height of the first space to gradually increase in the direction approaching the sliding sleeve.

[0008] Furthermore, the elastic member includes a disc spring.

[0009] Furthermore, the wrench assembly includes a plurality of wrenches, which are arranged around the nut body and are clearance-matched with the nut body to respectively drive the axial force adjustment assembly to move.

[0010] Furthermore, the wrench assembly is also drivingly connected to the nut body to drive the nut body to rotate relative to the screw, wherein a plurality of slots are provided on the nut body, and the plurality of slots are arranged one-to-one correspondingly to the plurality of wrenches so that the wrenches are respectively clamped in the corresponding slots and connected to the nut body.

[0011] Furthermore, the wrench is provided with a first driving part and a second driving part, which are respectively arranged at both ends of the wrench, so that the second driving part can reduce the axial force exerted on the nut body by adjusting the position of the axial force adjustment component by applying a driving force to the first driving part.

[0012] Furthermore, the first driving part is arranged on the side of the nut body away from the clamping pad, and the second driving part is arranged between the nut body and the clamping pad, wherein the first driving part adopts a seesaw, the seesaw is inclined in the direction away from the nut body, and the second driving part adopts a horizontal plate. The wrench also includes a connecting plate, one end of the connecting plate is connected to the seesaw, and the other end of the connecting plate is connected to the horizontal plate, and the connecting plate is covered on the side of the nut body.

[0013] Furthermore, the clamping pad is sleeved on the nut body, wherein a limiting groove is also provided on the nut body, and the nut further comprises a retaining spring, which is arranged in the limiting groove to keep the clamping pad connected to the nut body.

[0014] The main structure of the nut using the technical solution of the present invention is in the form of a combination of multiple parts, wherein the nut body is used to cooperate with the screw, the clamping pad is used to abut against the object and fix and lock the object, and when the nut body is locked, the clamping pad is pressed on the object, and the object will also apply an axial reaction force to the nut body through the clamping pad. When the nut needs to be removed, the axial force adjustment assembly is driven to move by the wrench assembly to reduce the axial force on the nut body. At this time, the disassembly can be easily completed by rotating the nut body. The nut of the present invention solves the problem that the traditional nut is not convenient to disassemble quickly after tightening through the above-mentioned setting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 shows a cross-sectional view of an embodiment of a nut according to the present invention;

[0017] Figure 2 A schematic diagram showing an embodiment of a nut body of a nut of the present invention is shown;

[0018] Figure 3 A schematic diagram showing an embodiment of a wrench for a nut of the present invention;

[0019] Figure 4 A schematic diagram showing an embodiment of a sliding sleeve of a nut of the present invention;

[0020] Figure 5 A schematic diagram showing a first embodiment of a sliding sleeve with a variable cross-section of a nut of the present invention;

[0021] Figure 6 A schematic diagram showing a second embodiment of a sliding sleeve with a variable cross section of a nut of the present invention;

[0022] Figure 7 A schematic diagram showing an embodiment of a compression pad for a nut of the present invention.

[0023] The above drawings include the following reference numerals:

[0024] 10. Nut body; 11. Slot; 12. Second annular bevel; 20. Pressure pad; 21. First annular bevel; 30. Wrench assembly; 31. Wrench; 311. First drive unit; 312. Second drive unit; 313. Connecting plate; 40. Sliding member; 50. First disc spring; 60. Sliding sleeve; 70. Elastic member; 80. Retaining spring. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In order to solve the problem that nuts in the prior art are difficult to quickly disassemble, the present invention provides a nut.

[0027] like Figures 1 to 7 A nut of the present invention includes a nut body 10, a clamping pad 20, a wrench assembly 30 and an axial force adjustment assembly. A threaded hole is provided on the inner side of the nut body 10 to cooperate with the screw; the clamping pad 20 is movably arranged relative to the nut body 10; the wrench assembly 30 is drivingly connected to the axial force adjustment assembly, and the axial force adjustment assembly is arranged between the clamping pad 20 and the nut body 10. The wrench assembly 30 reduces the axial force on the nut body 10 by adjusting the position of the axial force adjustment assembly.

[0028] The main structure of the nut of the present invention is in the form of a combination of multiple parts, wherein the nut body 10 is used to cooperate with the screw, and the clamping pad 20 is used to abut against an object and fix and lock the object. When the nut body 10 is locked, the clamping pad 20 is pressed on the object, and the object will also apply an axial reaction force to the nut body 10 through the clamping pad 20. When the nut needs to be quickly disassembled, the axial force adjustment assembly is driven to move by the wrench assembly to reduce the axial force on the nut body. At this time, the disassembly can be completed quickly by rotating the nut body. The nut of the present invention solves the problem that traditional nuts are not convenient to disassemble quickly after tightening through the above-mentioned settings.

[0029] The axial force adjustment component includes: a sliding sleeve 60, a sliding member 40 and an elastic member 70, one end of the wrench assembly 30 abuts against the sliding sleeve 60, wherein the sliding sleeve 60 is movably sleeved between the nut body 10 and the clamping pad 20 along the axial direction, and forms a first space with the nut body 10 and the clamping pad 20; the sliding member 40 is movably arranged in the first space and abuts against the surface of the sliding sleeve 60 facing the first space, and the height of the first space gradually increases in the direction approaching the sliding sleeve 60, so that when the sliding member 40 moves in the direction toward the sliding sleeve 60, the extrusion force of the sliding member 40 on the nut body 10 and the clamping pad 20 is reduced; the elastic member 70 is arranged between the sliding sleeve 60 and the clamping pad 20 and / or between the sliding sleeve 60 and the nut body 10 and / or between the nut body 10 and the sliding member 40.

[0030] like Figure 1 As shown, the axial force adjustment assembly is used to adjust the axial force exerted on the nut body. When the axial force increases, the nut body is locked and not easy to loosen. When the axial force decreases, the nut body can be quickly disassembled. Specifically, a sliding member is provided on the axial adjustment assembly, and the sliding member can slide along the inclined surface of the clamping pad or along the inclined surface of the nut body. When the sliding member moves toward the center direction of the nut body, the space is reduced, and the nut body is abutted against the clamping pad through the sliding member to form extrusion, and the axial force exerted on the nut body is increased to lock the nut body and the clamping pad. When the sliding member moves toward the direction away from the center of the nut body, the space becomes larger. At this time, the sliding member does not abut against the nut body and the clamping pad at the same time, or the sliding member only contacts the nut body and the clamping pad and no longer squeezes each other. At this time, the axial force exerted on the nut body is reduced, and the friction between the nut body and the screw is also reduced, so that it can be easily removed.

[0031] Furthermore, in order to facilitate the sliding member to move in the first space, according to an embodiment, a sliding sleeve is provided between the nut body and the pressing pad, the nut body 10 is provided with a second annular inclined surface 12, and the pressing pad 20 is provided with a first annular inclined surface 21. In addition, in order to allow the sliding member to have a sliding space, the inner wall of the sliding sleeve adopts a variable cross-section form, and the variable cross-section has various forms. Figure 5As shown in the figure, the middle part of the variable cross-section is formed by opening a circle of grooves in the middle position of the inner wall of the inclined sliding sleeve. When the sliding member moves into the groove, the sliding member moves quickly, thereby reducing the axial force on the nut body; Figure 6 As shown, the middle part of the variable cross-section is in the form of a continuous inclined surface, and the sliding part is closer to the center position of the sliding sleeve when it is at the bottom inner wall of the sliding sleeve than at the top inner wall. At this time, when the sliding part contacts the bottom, the axial force on the nut body is the largest, and when the sliding part contacts the top inner wall, the axial force on the nut body is the smallest.

[0032] As for the selection of sliding parts, round steel balls are preferred in this embodiment, and round steel columns can also be used.

[0033] As for the elastic member, the disc spring is preferred in the present invention.

[0034] According to one embodiment, the elastic member is a disc spring, which is arranged between the sliding sleeve and the pressure pad.

[0035] According to another embodiment, two elastic members are provided, and the two disc springs are respectively provided between the sliding sleeve and the clamping pad and between the sliding member and the nut body, or the two disc springs are respectively provided between the nut body and the sliding sleeve and between the clamping pad and the sliding sleeve.

[0036] The elastic member is arranged so that when the wrench assembly is pressed down, the sliding sleeve is driven to compress the elastic member so that the sliding member abuts against the inner wall of the sliding sleeve at different positions, thereby moving to reduce the axial force of the nut body.

[0037] The inner wall of the sliding sleeve 60 is a variable cross section, and the sliding member 40 moves along the variable cross section to change the distance of the sliding member 40 relative to the center line of the sliding sleeve 60, wherein the variable cross section means that the thickness of the sliding sleeve is uneven in the axial direction.

[0038] The sliding member 40 includes a plurality of balls, and a first annular slope 21 is provided on the pressing pad 20. The plurality of balls are evenly distributed on the first annular slope 21 to roll along the radial direction of the first annular slope 21. The first annular slope 21 gradually increases the height of the first space in the direction close to the sliding sleeve 60. The entire first space constitutes a space that is narrow inside and wide outside. The first annular slope makes the balls tend to move outward, so that when the variable cross-section of the sliding sleeve changes, the balls always keep close to the variable cross-section.

[0039] In addition, a second annular bevel may be provided on the nut body at a position opposite to the first annular bevel, and a disc spring may be provided between the second annular bevel and the sliding member to push the sliding member to move outward.

[0040] The wrench assembly 30 includes a plurality of wrenches 31, which are arranged around the nut body 10 and are clearance-matched with the nut body 10 to respectively drive the axial force adjustment assembly to move. The wrench assembly 30 can also be drivingly connected to the nut body 10 to drive the nut body 10 to rotate relative to the screw, wherein the nut body 10 is provided with a plurality of slots 11, and the plurality of slots 11 are arranged one-to-one with the plurality of wrenches 31, so that the wrenches 31 are respectively clamped in the corresponding slots 11 and connected to the nut body 10. The wrench 31 is provided with a first driving part 311 and a second driving part 312, which are respectively arranged at both ends of the wrench 31, so that by applying a driving force to the first driving part 311, the second driving part 312 can adjust the position of the axial force adjustment assembly to reduce the axial force on the nut body 10.

[0041] The wrench assembly of the present invention adopts two wrenches, which are symmetrically arranged on the nut body. In addition to being able to drive the axial force adjustment assembly, the wrench can also drive the nut body to rotate. Specifically, the wrench is clamped in the clamping groove of the nut body. Driving the two wrenches to rotate can drive the nut body to rotate, thereby facilitating the rotation of the nut body.

[0042] The wrench assembly drives the sliding sleeve to move by using the lever principle, and at least a portion of the wrench assembly can move vertically relative to the compression pad.

[0043] The first driving part 311 is arranged on the side of the nut body 10 away from the clamping pad 20, and the second driving part 312 is arranged between the nut body 10 and the clamping pad 20, wherein the first driving part 311 adopts a seesaw, and the seesaw is inclined in the direction away from the nut body, and the second driving part 312 adopts a horizontal plate. The wrench 31 also includes a connecting plate 313, one end of the connecting plate 313 is connected to the seesaw, and the other end of the connecting plate 313 is connected to the horizontal plate, and the connecting plate 313 is covered on the side of the nut body 10.

[0044] like Figure 3 As shown, the wrench 31 in this embodiment is a fan-shaped structure as a whole, and a plurality of steps are provided on one side of the nut body 10. The wrench 31 is clamped and covered on the groove of the outermost step, and can be disassembled relative to the groove. Specifically, the first driving part 311, the second driving part 312 and the connecting plate 313 of the wrench 31 structure are integrally formed, and the seesaw of the first driving part 311 is tilted upward, and a stop rib is also provided at the end of the horizontal plate of the second driving part 312. The stop rib is inserted into the inner side of the sliding sleeve 60, thereby preventing the wrench 31 from detaching outward and further fixing the wrench 31. When the nut needs to be removed, the staff pries the seesaw outward. At this time, the second driving part 312 and the stop rib will move downward under the action of the lever principle, thereby driving the sliding sleeve 60 to move downward. After installation, the horizontal plate is located between the nut body 10 and the sliding sleeve 60.

[0045] According to another embodiment, the wrench assembly is disposed above the sliding sleeve, and the sliding sleeve can be pushed downward by directly pressing the wrench assembly.

[0046] In addition, the nut of the present invention also includes a retaining spring 80, and an annular limiting groove is also provided at the end of the nut body 10. After the clamping pad 20 is sleeved on the nut body 10, the retaining spring 80 is clamped in the annular groove, thereby locking the clamping pad 20 on the nut body 10.

[0047] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0048] The present invention provides a quick-change nut, on which an internal thread is arranged on a nut body 10, which cooperates with a stud to be tightened to fasten an object; a pressure pad 20 is sleeved on the periphery of the nut body 10 to press the object to be fastened and can transmit the tightening force of the nut body 10; the nut also includes an axial force adjustment component, which is sleeved on the periphery of the nut body 10, including a sliding part 40, an elastic part 70, and a sliding sleeve 60, wherein the sliding part 40 is a steel ball, which is located between the nut body 10 and the pressure pad 20 and is arranged around the nut body 10, and the sliding sleeve 60 is arranged on the outer edge of the steel ball, wherein a first disc spring 50 is arranged on the upper part of the steel ball, the elastic part 70 is arranged between the pressure pad 20 and the sliding sleeve 60, and the wrench 31 is located between the sliding sleeve 60 and the nut body 10.

[0049] When tightening the nut, the elastic member 70 lifts up the sliding sleeve 60, and the steel ball is located on the inner circular inclined surface of the sliding sleeve 60. The inner circular inclined surface clamps the steel ball, and the steel ball can receive the tightening force of the nut body 10 and transmit it to the compression pad 20 below it, thereby clamping. When removing the nut, the sliding sleeve 60 can be squeezed downward by pulling the wrench 31 outward, and the inner diameter of the inclined surface of the sliding sleeve 60 clamping the steel ball increases, and the steel ball moves outward, so that a gap appears in the axial direction between the nut body 10 and the compression pad 20, and the axial force on the thread of the nut body 10 is reduced, and the nut can be quickly removed.

[0050] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0051] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0052] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A nut, characterized in that: include: A nut body (10), wherein a threaded hole is provided inside the nut body (10) to cooperate with the screw rod; A pressing pad (20), the pressing pad (20) being movably arranged relative to the nut body (10); a wrench assembly (30) and an axial force adjustment assembly, the wrench assembly (30) being drivingly connected to the axial force adjustment assembly, the axial force adjustment assembly being arranged between the pressure pad (20) and the nut body (10), the wrench assembly (30) reducing the axial force applied to the nut body (10) by adjusting the position of the axial force adjustment assembly; The wrench assembly (30) comprises a plurality of wrenches (31), wherein the plurality of wrenches (31) are arranged around the nut body (10), and the wrench (31) is provided with a first driving portion (311) and a second driving portion (312), wherein the first driving portion (311) and the second driving portion (312) are respectively arranged at two ends of the wrench (31); The first driving portion (311) is arranged on a side of the nut body (10) away from the pressing pad (20), and the second driving portion (312) is arranged between the nut body (10) and the pressing pad (20). The wrench (31) further comprises a connecting plate (313), one end of the connecting plate (313) is connected to the first driving portion (311), and the other end of the connecting plate (313) is connected to the second driving portion (312), and the connecting plate (313) is wrapped around the side of the nut body (10).

2. The nut according to claim 1, characterized in that: The axial force adjustment component comprises: a sliding sleeve (60), one end of the wrench assembly (30) being in abutment with the sliding sleeve (60), wherein the sliding sleeve (60) is movably sleeved between the nut body (10) and the pressing pad (20) in an axial direction, and encloses a first space with the nut body (10) and the pressing pad (20); a sliding member (40), the sliding member (40) being movably disposed in the first space and abutting against a surface of the sliding sleeve (60) facing the first space, the height of the first space gradually increasing in a direction approaching the sliding sleeve (60), so that when the sliding member (40) moves in a direction toward the sliding sleeve (60), the pressing force of the sliding member (40) on the nut body (10) and the pressing pad (20) is reduced; An elastic member (70), wherein the elastic member (70) is arranged between the sliding sleeve (60) and the pressure pad (20) and / or between the sliding sleeve (60) and the nut body (10) and / or between the nut body (10) and the sliding member (40).

3. The nut according to claim 2, characterized in that: The inner wall of the sliding sleeve (60) has a variable cross-section, and the sliding member (40) moves along the variable cross-section, so that the distance of the sliding member (40) relative to the center line of the sliding sleeve (60) changes.

4. The nut according to claim 2, characterized in that: The sliding member (40) comprises a plurality of spherical balls. The pressing pad (20) is provided with a first annular inclined surface (21). The plurality of spherical balls are evenly distributed on the first annular inclined surface (21) so as to roll along the radial direction of the first annular inclined surface (21). The first annular inclined surface (21) causes the height of the first space to gradually increase in a direction approaching the sliding sleeve (60).

5. The nut according to claim 2, characterized in that: The elastic member (70) comprises a disc spring.

6. The nut according to claim 1, characterized in that: The plurality of wrenches (31) are clearance-matched with the nut body (10) to respectively drive the axial force adjustment assembly to move.

7. The nut according to claim 6, characterized in that: The wrench assembly (30) is also drivingly connected to the nut body (10) to drive the nut body (10) to rotate relative to the screw rod, wherein a plurality of slots (11) are provided on the nut body (10), and the plurality of slots (11) are arranged in a one-to-one correspondence with the plurality of wrenches (31), so that the wrenches (31) are respectively clamped in the corresponding slots (11) and connected to the nut body (10).

8. The nut according to claim 6, characterized in that: By applying a driving force to the first driving part (311), the second driving part (312) adjusts the position of the axial force adjustment component to reduce the axial force applied to the nut body (10).

9. The nut according to claim 8, characterized in that The first driving part (311) is a seesaw plate, the seesaw plate is tilted in a direction away from the nut body (10), and the second driving part (312) is a horizontal plate.

10. The nut according to claim 1, characterized in that: The clamping pad (20) is sleeved on the nut body (10), wherein the nut body (10) is also provided with a limiting groove, and the nut further comprises a retaining spring (80), wherein the retaining spring (80) is arranged in the limiting groove so as to keep the clamping pad (20) connected to the nut body (10).

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