A nut

Abstract

The utility model provides a nut relates to mechanical part technical field. It includes nut main part, the nut main part includes internal thread, the nut main body is provided with the pin installation hole, the compression washer, the compression washer opposite the nut main part axial direction is movable, the pin, the pin is installed in the pin installation hole, the rotary sleeve has rotary cylinder and rotary cylinder cover, the rotary sleeve is equipped on the nut main part, the rotary sleeve can drive the nut main part and carry out the circumferential rotation, the rotary sleeve in relative the nut main body rotation process, can make the pin in the nut main body axial direction close or away from the compression washer movement, the elastomer, the elastomer drives the pin to the compression washer direction movement away from, the nut main body, the pin, the compression washer constitute airtight space. This fast -changing nut does not need to borrow any tool, and the loosening nut can be implemented by hand twisting, and the operation and use are convenient.

Description

Technical Field

[0001] This utility model relates to the field of mechanical parts technology, and in particular to a nut. Background Technology

[0002] Nuts are common mechanical parts, typically used in conjunction with bolts or studs to fasten and connect components. In the mechanical field, nuts are widely used as basic fasteners in the assembly and fixing of various equipment. For example, nuts used on angle grinders can be tightened by hand to clamp the tool. However, during machine use, the nut may become self-tightened, making it impossible to remove by hand and requiring tools, which is inconvenient for tool disassembly. Utility Model Content

[0003] This utility model addresses the technical problem that existing nuts cannot be directly disassembled by hand after tightening and require tools to remove, making them inconvenient to use. It provides a nut comprising a nut body, a pin, a steel ball, a rotating sleeve, a pressure washer, a snap ring, a rubber pad, and a fastening sleeve. This quick-release nut can be loosened by hand without any tools, making operation and use more convenient.

[0004] Therefore, the technical solution of this utility model is a nut, comprising: a nut body, the nut body including an internal thread, the nut body being provided with a pin mounting hole; a clamping washer, the clamping washer being movable relative to the axial direction of the nut body; a pin, the pin being installed in the pin mounting hole; a rotating sleeve having a rotating cylinder and a rotating cylinder cover, the rotating sleeve being sleeved on the nut body, the rotating sleeve being able to drive the nut body to rotate circumferentially, the rotating sleeve being able to cause the pin to move closer to or away from the clamping washer in the axial direction of the nut body during rotation relative to the nut body; an elastic body, the elastic body driving the pin to move away from the clamping washer; the nut body, the pin, and the clamping washer forming a sealed space, when the rotating sleeve causes the pin to move closer to the clamping washer, the clamping washer moves downward and thus clamps the object, when the rotating sleeve rotates in the opposite direction, the rotating sleeve provides space for the pin to move away from the clamping washer, the pin moving away from the clamping washer under the action of the elastic body.

[0005] Furthermore, the nut body includes an inner cylindrical tube and an outer cylindrical tube. The inner cylindrical tube is provided with internal threads. A nut sleeve cover is connected between the inner cylindrical tube and the outer cylindrical tube. The pin mounting hole is provided through the nut sleeve cover. An installation chamber with an open lower end is formed between the inner cylindrical tube and the outer cylindrical tube. The installation chamber forms a sealed space through the pin and the compression washer.

[0006] Furthermore, in a cross-section perpendicular to the axis of the nut body, the sum of the cross-sectional areas of the pins is less than the cross-sectional area of ​​the compression washer.

[0007] Furthermore, a spiral lifting structure is provided between the outer sleeve of the nut body and the rotating cylinder of the rotating sleeve. The spiral lifting structure consists of a spiral groove on one of the outer sleeve of the nut body and the rotating cylinder of the rotating sleeve, and a sliding part on the other part, or a sliding part and a sliding part receiving groove on the other part. The spiral groove includes an upper ball groove and a lower ball groove, as well as a lifting part between the two. The axial distance between the nut body and the rotating sleeve can be increased or decreased by sliding the sliding part in the spiral groove.

[0008] Furthermore, the sliding part receiving groove is provided through the rotating cylinder.

[0009] Furthermore, the outer sleeve of the nut body is provided with the spiral groove, and the rotating cylinder of the rotating sleeve is provided with the sliding part receiving groove, wherein the sliding part is a ball.

[0010] Furthermore, a fastening sleeve is provided on the outside of the rotating cylinder.

[0011] Furthermore, the elastomer is a plastically deformable rubber pad.

[0012] Furthermore, the portion of the pin that contacts the rotating sleeve is arc-shaped.

[0013] Furthermore, the elastomer is provided with a pin mounting hole, or the elastomer and the compression washer are provided with pin mounting holes.

[0014] The beneficial effects of this utility model are:

[0015] The internal thread of the nut body is screwed onto the threaded shaft of the tool. Rotating the rotating sleeve and the fastening sleeve clockwise forces the rotating sleeve to move downwards along the helical groove due to the limiting effect of the steel ball and the helical groove of the nut body. The rotating sleeve's rotating cap presses the pin against the rubber pad, causing the steel ball to move from the upper groove to the lower groove. Because the rubber pad is in a sealed space, the downward movement of the pin increases the volume pressed into this sealed space, leading to an increase in pressure within the sealed space. Pressure acts on the upper surface of the pressure washer, thereby generating axial compressive force to lock the workpiece. Similarly, when loosening, rotating the rotating sleeve and the fastening sleeve counterclockwise causes the pin to come out of the sealed space under the elastic force of the rubber pad. As the volume of the sealed space increases instantaneously, the pressure decreases instantaneously, and the axial compressive force on the pressure washer also decreases instantaneously. At this time, rotating the rotating sleeve again can easily loosen the nut. Therefore, this quick-change nut can be loosened by hand without the aid of any tools, which is convenient for operation and use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of the assembled state of this utility model;

[0018] Figure 2 yes Figure 1 Exploded view;

[0019] Figure 3 yes Figure 2 Another structural diagram;

[0020] Figure 4 yes Figure 1 A sectional view;

[0021] Figure 5 This is a schematic diagram of the rotating sleeve;

[0022] Figure 6 This is a schematic diagram of the internal structure of this utility model;

[0023] Figure 7 This is a schematic diagram of the main body of the nut;

[0024] Figure 8 yes Figure 7 Another structural diagram;

[0025] Figure 9 This is a structural diagram of the pin;

[0026] Figure 10 This is a schematic diagram of the rubber pad structure;

[0027] Figure 11 This is a structural diagram of the compression washer;

[0028] Figure 12 yes Figure 11 A structural diagram from another angle.

[0029] Explanation of symbols in the diagram:

[0030] 1. Nut body; 11. Inner cylinder; 12. Outer cylinder; 13. First pin mounting hole; 14. Spiral groove; 141. Upper ball groove; 142. Lower ball groove; 143. Lifting part; 15. Nut sleeve cover; 16. Mounting chamber; 2. Pin; 21. Head; 22. Thick rod; 23. Thin rod; 3. Steel ball; 4. Rotating sleeve; 41. Rotating sleeve cover; 411. Central hole of sleeve cover; 412. Knurling; 42. Rotating cylinder body; 421. Ball hole; 5. Compression washer; 51. Pin positioning hole; 52. Clamping platform; 6. Snap ring; 7. Rubber pad; 71. Second pin mounting hole; 8. Fastening sleeve. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figures 1-12 As shown, this utility model provides a nut, which includes a nut body 1, a pin 2, a steel ball 3, a rotating sleeve 4, a compression washer 5, a retaining spring 6, a rubber pad 7, and a fastening sleeve 8. The nut body 1 has an internal mounting chamber 16. The compression washer 5 is fixed in the mounting chamber 16 inside the nut body 1 by the retaining spring 6. The mounting chamber 16 forms a sealed space through the pin 2 and the compression washer 5. The rubber pad 7 is installed in this sealed space, and the size of the rubber pad 7 matches the size of the sealed space. Optionally, the rubber pad 7 is an elastic body that drives the pin 2 to move away from the compression washer 5.

[0033] A rotating sleeve 4 is installed on the outer side of the upper end of the nut body 1. The rotating sleeve 4 is connected to the nut body 1 by a spiral lifting connection. That is, the rotating sleeve 4 rotates relative to the nut body 1 while moving up and down. For example, while the rotating sleeve 4 rotates clockwise, it descends relative to the nut body 1, and while the rotating sleeve 4 rotates counterclockwise, it rises relative to the nut body 1.

[0034] The pin 2 includes a head 21, a thick rod 22, and a thin rod 23. The thick rod 22 and the thin rod 23 of the pin 2 pass through the nut body 1 and the rubber washer 7, respectively. The tail end of the thin rod 23 of the pin 2 is inserted into the pin positioning hole 51 of the clamping washer 5. When the rotating sleeve 4 rotates and descends relative to the nut body 1, the rotating sleeve 4 presses the pin 2 and moves towards the clamping washer 5. When the rotating sleeve 4 rotates and rises relative to the nut body 1, under the elastic force of the rubber washer 7, the pin 2 moves away from the clamping washer 5.

[0035] Specifically, the nut body 1 includes an inner cylinder 11 and an outer cylinder 12, which are integral structures. The inner cylinder 11 is located inside the outer cylinder 12, and an installation chamber 16 with an open lower end is formed between the inner cylinder 11 and the outer cylinder 12. The inner cylinder 11 is provided with an internal thread for threaded connection of the workpiece. The length of the inner cylinder 11 is greater than that of the outer cylinder 12, and the upper end of the inner cylinder 11 is higher than that of the outer cylinder 12. The lower end of the inner cylinder 11 is flush with the outer cylinder 12. The lower end of the inner cylinder 11 is provided with a retaining spring groove for the installation of the retaining spring 6.

[0036] A nut sleeve cover 15 connects the inner cylinder 11 and the outer cylinder 12. The nut sleeve cover 15 has multiple first pin mounting holes 13, which penetrate the nut sleeve cover 15. The outer cylinder 12 has multiple spiral grooves 14. As an optimal solution, there are 3 spiral grooves 14. The spiral grooves 14 are spiral grooves. Steel balls 3 are installed inside the spiral grooves 14. The steel balls 3 roll along the spiral grooves 14. The upper and lower ends of the spiral grooves 14 are respectively provided with an upper ball groove 141 and a lower ball groove 142. A lifting part 143 is provided between the upper ball groove 141 and the lower ball groove 142. When the steel ball 3 moves along the spiral groove 14 to the highest point, it stops at the upper ball groove 141. When the steel ball 3 moves in the opposite direction along the spiral groove 14 to the lowest point, it stops at the lower ball groove 142.

[0037] The rotating sleeve 4 includes a rotating cap 41 and a rotating body 42. The rotating cap 41 and the rotating body 42 are an integral structure. The rotating cap 41 and the rotating body 42 are respectively sleeved with the inner cylinder 11 and the outer cylinder 12 of the nut body 1. The rotating cap 41 has a central hole 411 in the middle, which is used for the inner cylinder 11. The outer ring surface of the rotating cap 41 is provided with knurling 412, which increases the friction when the rotating sleeve 4 is held.

[0038] The rotating cylinder 42 has multiple ball holes 421, the number of which is the same as the number of steel balls 3 and spiral grooves 14. The ball holes 421 are used for mounting the steel balls 3. When the rotating sleeve 4 is fitted onto the nut body 1, part of the steel ball 3 is located in the spiral groove 14, and the other part is located in the ball holes 421 of the rotating cylinder 42. To restrict the radial movement of the steel balls 3, a fastening sleeve 8 is installed on the outer side of the rotating cylinder 42. The fastening sleeve 8 is fixedly fitted onto the rotating cylinder 42, confining the steel balls 3 within the ball holes 421. When the rotating sleeve 4 and the fastening sleeve 8 are rotated, the limiting effect of the steel balls 3 and spiral grooves 14 enables a spiral lifting connection between the rotating sleeve 4 and the nut body 1. In this embodiment, the steel balls 3 serve as sliding parts, and the ball holes 421 serve as sliding part receiving grooves. Optionally, the sliding part receiving groove is an arc-shaped structure without through holes.

[0039] As will be understood by those skilled in the art, a spiral lifting structure is provided between the outer sleeve 12 of the nut body 1 and the rotating cylinder 42 of the rotating sleeve 4. This spiral lifting structure consists of a spiral groove 14 on one of the outer sleeve 12 of the nut body 1 and the rotating cylinder 42 of the rotating sleeve 4, and a sliding part on the other component, or a sliding part and a sliding part receiving groove on the other component. Optionally, the sliding part is integrally formed with the other component. For example, the outer sleeve 12 of the nut body 1 has a spiral groove 14, and the rotating cylinder 42 of the rotating sleeve 4 has a protrusion as a sliding part. The spiral lifting motion is achieved by the movement of the protrusion in the spiral groove 14. Optionally, the spiral groove 14 is located inside the rotating cylinder of the rotating sleeve 4, and the outer sleeve 12 of the nut body 1 has a sliding part, or the outer sleeve 12 of the nut body 1 has a sliding part and a sliding part receiving groove.

[0040] The compression washer 5 is installed at the lower opening of the mounting chamber 16 between the inner cylinder 11 and the outer cylinder 12 via the snap ring 6. The compression washer 5, the inner cylinder 11 and the outer cylinder 12 of the nut body 1 form a sealed space. This sealed space is used to install the rubber gasket 7. The rubber gasket 7 is elastic and has multiple second pin mounting holes 71, which pass through the rubber gasket 7.

[0041] The upper end face of the clamping washer 5 is provided with a plurality of pin positioning holes 51. The number of pin positioning holes 51 is the same as the number of the first pin mounting holes 13 and the second pin mounting holes 71. After the pin 2 is installed, the head 21 of the pin 2 is located between the rotating sleeve 4 and the outer sleeve 12 of the nut body 1. The thick part 22 of the pin 2 is located in the first pin mounting hole 13, and the thin part 23 of the pin 2 is located in the second pin mounting hole 71 and the pin positioning holes 51.

[0042] The upper end of the inner cavity of the compression washer 5 is provided with a retaining plate 52. The retaining plate 52 is used to cooperate with the retaining spring 6 to fix the compression washer 5 and the rubber gasket 7 in the mounting chamber 16 between the inner cylinder 11 and the outer cylinder 12. At this time, the nut body 1 and the compression washer 5 form a sealed space, and the rubber gasket 7 fills this sealed space. The lower end face of the compression washer 5 is provided with locking grooves, and the lower end face of the compression washer 5 is lower than the lower end face of the inner cylinder 11.

[0043] The working principle of this quick-change nut is as follows: the internal thread of the nut body 1 is screwed onto the threaded shaft of the tool. When the rotating sleeve 4 and the fastening sleeve 8 are rotated clockwise, the rotating sleeve 4 is forced to move down along the spiral groove 14 due to the limiting effect of the steel ball 3 and the spiral groove 14 of the nut body 1. The rotating sleeve 41 of the rotating sleeve 4 presses the pin 2 and moves towards the rubber pad 7. The position of the steel ball 3 in the spiral groove 14 moves from the upper ball groove 141 to the lower ball groove 142.

[0044] Since the rubber pad 7 is in a closed space, the lower end face of the thick rod portion 22 of the pin 2 presses against the upper end face of the rubber pad 7. As the pin 2 moves downward, the volume of the pin 2 pressed in increases in the closed space, resulting in an increase in pressure in the closed space. This pressure acts on the upper end face of the pressure washer 5, thereby generating an axial compressive force to lock the workpiece. In addition, since there is a large difference between the end area of ​​the pin 2 and the end area of ​​the pressure washer 5, when the pressure is the same, the pressure is proportional to the area of ​​force application. Therefore, by pressing the pin 2 with a smaller compressive force, a larger compressive force can be generated on the pressure washer 5 to lock the workpiece.

[0045] When loosening, rotate the rotating sleeve 4 and the fastening sleeve 8 counterclockwise, so that the steel ball 3 moves from the lower ball groove 142 in the spiral groove 14 to the upper ball groove 141. The inner end face of the rotating sleeve 4's rotating cylinder cover 41 moves away from the head 21 of the pin 2. Under the elastic force of the rubber pad 7, the pin 2 comes out of the sealed space. As the volume of the sealed space increases instantaneously, the pressure decreases instantaneously, and the axial compressive force on the clamping washer 5 also decreases instantaneously. At this time, rotating the rotating sleeve 4 can easily loosen the nut. Therefore, this quick-change nut does not require any tools and can be loosened by hand, which is convenient for operation and use.

[0046] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A nut, characterized in that, include: The nut body includes an internal thread and a pin mounting hole. A compression washer is movable relative to the axial direction of the nut body; A pin, wherein the pin is installed in the pin mounting hole; A rotating sleeve, which has a rotating cylinder and a rotating cap, is sleeved on the nut body. The rotating sleeve can drive the nut body to rotate circumferentially. During the rotation of the rotating sleeve relative to the nut body, the pin can move closer to or further away from the clamping washer in the axial direction of the nut body. An elastomer drives the pin to move away from the clamping washer; The nut body, the pin, and the clamping washer form a sealed space. When the rotating sleeve moves the pin toward the clamping washer, the clamping washer moves down and clamps the object. When the rotating sleeve rotates in the opposite direction, it provides space for the pin to move away from the clamping washer. Under the action of the elastic body, the pin moves away from the clamping washer.

2. The nut according to claim 1, characterized in that, The nut body includes an inner cylindrical tube and an outer cylindrical tube. The inner cylindrical tube is provided with internal threads. A nut sleeve cover is connected between the inner cylindrical tube and the outer cylindrical tube. The pin mounting hole is provided through the nut sleeve cover. An installation chamber with an open lower end is formed between the inner cylindrical tube and the outer cylindrical tube. The installation chamber forms a sealed space through the pin and the compression washer.

3. The nut according to claim 1, characterized in that, On a cross-section perpendicular to the axis of the nut body, the sum of the cross-sectional areas of the pins is less than the cross-sectional area of ​​the compression washer.

4. The nut according to claim 1, characterized in that, A spiral lifting structure is provided between the outer sleeve of the nut body and the rotating cylinder of the rotating sleeve. The spiral lifting structure consists of a spiral groove on one of the outer sleeve of the nut body and the rotating cylinder of the rotating sleeve, and a sliding part on the other part, or a sliding part and a sliding part receiving groove on the other part. The spiral groove includes an upper ball groove and a lower ball groove, as well as a lifting part between the two. The axial distance between the nut body and the rotating sleeve can be increased or decreased by sliding the sliding part in the spiral groove.

5. The nut according to claim 4, characterized in that, The sliding part receiving groove is provided through the rotating cylinder.

6. The nut according to claim 4 or 5, characterized in that, The outer sleeve of the nut body is provided with the spiral groove, and the rotating cylinder of the rotating sleeve is provided with the sliding part receiving groove, wherein the sliding part is a ball.

7. The nut according to claim 6, characterized in that, The rotating cylinder is provided with a fastening sleeve on its exterior.

8. The nut according to claim 1, characterized in that, The elastomer is a plastically deformable rubber pad.

9. The nut according to claim 1, characterized in that, The part of the pin that contacts the rotating sleeve is arc-shaped.

10. The nut according to claim 9, characterized in that, The elastic body is provided with a pin mounting hole, or the elastic body and the compression washer are provided with pin mounting holes.

Images