Nuts with a check valve

Abstract

This utility model discloses a nut with a check valve structure, relating to the field of nut technology. The utility model includes a nut body with a check valve component. The nut body is threadedly connected to a screw with a check valve groove. The nut body includes a rotating part and a check valve part detachably connected to the rotating part. The check valve component is snapped onto the inner circumferential wall of the check valve part. An internal thread is formed on the inner circumferential wall of the rotating part. A protrusion is fixedly connected to the side of the rotating part facing the check valve part. The check valve part is sleeved on the protrusion. A limiting component is provided on the protrusion to prevent the check valve part from disengaging from the protrusion. By setting the limiting component, the check valve part is detachably connected, and the check valve component is snapped onto the check valve part. When the check valve part is removed, the check valve component also disengages from the protrusion and the rotating part, thus loosening the nut and making the operation more convenient.

Description

Technical Field

[0001] This utility model relates to a nut, and more specifically, to a nut with a check valve structure. Background Technology

[0002] Nuts are indispensable fasteners in mechanical connections. Their core function is to fix and connect components by engaging with bolts or screws through internal threads.

[0003] In daily life, we often find that mechanically locked nuts can loosen due to mechanical vibration under normal operating conditions. To solve these problems, our predecessors invented a method using rigid spring washers, which can effectively reduce the self-slippage effect of screws under slight vibration. For example, utility model patent CN214578257U describes an anti-loosening nut, which includes a screw and a nut body. The screw has an axial check groove. The nut body includes a snap-fit ​​part and a threaded part integrally formed with the snap-fit ​​part. The snap-fit ​​part has multiple clockwise circumferentially inclined and evenly arranged T-shaped grooves. Each T-shaped groove has a T-shaped spring piece snapped in place. The end of the T-shaped spring piece extends out of the T-shaped groove and engages with the check groove. The T-shaped spring clip is used to lock into the check groove to block the nut body from loosening, so that the screw will not loosen or fall off on its own under high-frequency vibration. This can effectively ensure the safety of the equipment and greatly reduce the serious hazards caused by screw slippage. However, if it is necessary to loosen the nut, the operation is relatively cumbersome.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a nut with a check valve structure.

[0006] The technical solution of this utility model is:

[0007] A nut with a check valve structure includes a nut body with a check valve component. The nut body is threadedly connected to a screw with a check valve groove. The nut body includes a rotating part and a check valve part detachably connected to the rotating part. The check valve component is snapped onto the inner peripheral wall of the check valve part. The inner peripheral wall of the rotating part has an internal thread. A protrusion is fixedly connected to the side of the rotating part facing the check valve part. The check valve part is sleeved on the protrusion part. The protrusion part is provided with a limiting component for preventing the check valve part from disengaging from the protrusion part.

[0008] The present invention is further configured such that the limiting component includes a limiting member disposed on the outer peripheral wall of the protrusion, and the check portion is provided with a limiting port that cooperates with the limiting member, and the limiting member is inserted into the limiting port radially along the check portion.

[0009] The present invention is further configured such that a receiving recess for accommodating a limiting member is provided on the outer peripheral wall of the protrusion, the limiting member is fixedly connected to the inner side wall of the receiving recess, and the limiting member has an elastic deformation potential energy that causes its end to tilt out of the receiving recess.

[0010] The present invention is further provided that the inner sidewall of the limiting port is provided with a slot that cooperates with the end of the limiting member.

[0011] The present invention is further configured such that an elastic pad is fitted on the protrusion, the elastic pad is disposed between the check part and the rotating part, and the elastic pad has elastic deformation potential energy to drive the check part away from the rotating part along the axial direction.

[0012] The present invention is further configured such that the outer peripheral contour of the stop portion is consistent with the outer peripheral contour of the rotating portion.

[0013] The present invention is further configured such that a pressing part with an annular cross-section is provided on the outer peripheral wall of the stop part, and the pressing part is located on the side of the limiting port away from the rotating part.

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

[0015] By setting a limit component, the check part can be detachably connected, and the check part is snapped onto the check part. When the check part is removed, the check part also disengages from the protrusion and rotating part, thus loosening the nut and making the operation more convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the nut body of this utility model;

[0018] Figure 3 This is an exploded view of the nut body of this utility model;

[0019] Figure 4 This is an exploded view of the nut body of this utility model from another perspective.

[0020] In the diagram, 1. Nut body; 11. Check valve; 12. Snap-fit ​​block; 2. Screw; 21. Check valve groove; 3. Rotating part; 4. Check valve; 41. Limiting port; 411. Snap-fit ​​groove; 42. Mounting groove; 43. Snap-fit ​​hole; 44. Pressing part; 5. Protrusion; 51. Limiting valve; 52. Receiving recess; 53. Through groove; 6. Elastic pad. Detailed Implementation

[0021] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0022] A nut with a check valve structure, such as Figures 1-4 As shown, the nut body 1 includes a check valve 11. The nut body 1 is threadedly connected to a screw 2 with a check groove 21. One end of the check groove 21 on the screw 2 extends axially along the screw 2 and is open. The check valve 11 is provided on the inner peripheral wall of the nut body 1. The check groove 21 that mates with the check valve 11 is provided on the outer peripheral wall of the screw 2. The nut body 1 includes a rotating part 3 and a check valve 4 that is detachably connected to the rotating part 3. The check valve 4 is located on the side of the rotating part 3 away from the head of the screw 2. The number of check valves 11 is set to six, which are distributed in a circular array and snapped onto the inner peripheral wall of the check valve 4. The inner peripheral wall of the rotating part 3 is provided with an internal thread. A protrusion 5 is fixedly connected to the side of the rotating part 3 facing the check valve 4. The check valve 4 is sleeved on the protrusion 5. A limiting component is provided on the protrusion 5 to prevent the check valve 4 from disengaging from the protrusion 5.

[0023] The check valve 11 has a T-shaped cross-section and is made of elastic metal material. Six clockwise circumferentially inclined and evenly arranged mounting grooves 42 are formed on the inner circumferential wall of the check valve part 4. The check valve 11 is inserted into the mounting grooves 42, so that the check valve 11 is also evenly distributed clockwise circumferentially. The end of the check valve 11 extends towards the central axis of the check valve part 4. A clearance groove communicating with the T-shape is also formed on the inner circumferential wall of the check valve part 4. Therefore, when the nut body 1 is tightened onto the screw 2, the inclined arrangement of the check valve 11 provides excellent guidance. The clearance groove also avoids deformation space for the check valve 11, making deformation easier. When the end of part 11 enters the check groove 21, it is easier for the check part 11 to disengage from the check groove 21 after deformation, without hindering the tightening of the nut body 1; the protrusion 5 has an array of through grooves 53 for the check part 11 to pass through; a snap-fit ​​block 12 is integrally formed on one side of the check part 11, and a snap-fit ​​hole 43 for the snap-fit ​​block 12 to pass through is provided on the inner side wall of the mounting groove 42. Since the check part 11 is made of elastic metal material, the snap-fit ​​block 12 has a certain elasticity. Through its own elasticity, when the snap-fit ​​block 12 corresponds to the snap-fit ​​hole 43, the snap-fit ​​block 12 can be inserted into the snap-fit ​​hole 43, thereby restricting the check part 11 from disengaging from the mounting groove 42;

[0024] The limiting assembly includes a limiting member 51 disposed on the outer peripheral wall of the protrusion 5. The limiting member 51 is also made of elastic metal material. A limiting opening 41 is provided on the check portion 4 to cooperate with the limiting member 51. The limiting member 51 is inserted radially into the limiting opening 41 along the check portion 4. A receiving recess 52 is provided on the outer peripheral wall of the protrusion 5 to accommodate the limiting member 51. The limiting member 51 is fixedly connected to the inner sidewall of the receiving recess 52. The limiting member 51 has the capability to cause its end to extend obliquely out of the receiving recess. The elastic deformation potential energy of the recess 52; when the check part 4 is sleeved on the outer peripheral wall of the protrusion 5, when the position of the limiting port 41 corresponds with that of the limiting member 51, the limiting member 51 extends into the limiting port 41 through its own elasticity, thereby restricting the check part 4 from moving away from the protrusion 5 along the axial direction. Furthermore, the end of the limiting member 51 extends obliquely to accommodate the recess 52, so that when the check part 4 is installed, due to the oblique setting, it has a certain guiding effect, making the installation of the check part 4 more convenient.

[0025] A groove 411 is provided on the inner wall of the limiting opening 41 to mate with the end of the limiting member 51. An elastic pad 6 is fitted on the protrusion 5. The elastic pad 6 is a rubber pad with a certain elasticity. The elastic pad 6 is located between the check part 4 and the rotating part 3. The elastic pad 6 has elastic deformation potential energy to drive the check part 4 away from the rotating part 3 axially. By providing the groove 411, the end of the limiting member 51 can be inserted into the groove 411, thereby limiting the end of the limiting member 51 from moving away from the limiting opening 41. The elastic pad 6, with its elasticity, allows the end of the limiting member 51 to be inserted more stably into the slot 411, ensuring stability. The outer periphery of the check part 4 is consistent with the outer periphery of the rotating part 3, allowing operation to be completed using the same hex wrench. The outer periphery of the check part 4 is provided with a pressing part 44 with an annular cross-section. The pressing part 44 is located on the side of the limiting port 41 away from the rotating part 3, making it easier to press the check part 4 with an hex wrench, thus making installation more convenient.

[0026] Working principle: Six T-shaped check pieces 11 are snapped into the mounting grooves 42 on the check part 4. Utilizing the elasticity of the snapping blocks 12 on the check pieces 11, the snapping blocks 12 are inserted into the snapping holes 43, thus preventing the check pieces 11 from detaching from the mounting grooves 42, completing the installation of the check part 4. The check part 4 is then fitted onto the protrusion 5 of the rotating part. Using the cooperation between the limiting port 41 and the limiting member 51, the limiting member 51, through its own elasticity, extends into the limiting port 41, thus preventing the check part 4 from moving axially away from the protrusion 5, completing the installation of the entire nut body 1. At this point, when the nut body 1 is tightened onto the screw 2, the check pieces 11... The inclined setting provides excellent guidance, and the clearance groove avoids the deformation space of the check piece 11, making deformation easier. When the end of the check piece 11 enters the check groove 21, it is easier for the check piece 11 to disengage from the check groove 21 after deformation, without hindering the tightening of the nut body 1. After installation, the check piece 11 is inserted into the check groove 21 on the outer peripheral wall of the screw 2, blocking the path of the nut body 1 to loosen. This prevents the screw 2 from loosening or falling off under high-frequency vibration, ensuring the safety of the equipment and greatly reducing the serious hazards caused by screw slippage.

[0027] When it is necessary to loosen the nut body 1, simply use a hex wrench to press the pressing part 44, so that the end of the limiting member 51 is disengaged from the slot 411, and press the limiting member 51 so that the limiting member 51 extends into the receiving groove, thereby disengaging from the limiting port 41. This allows the check part 4 to disengage from the rotating part and detach from the screw 2 along the screw 2 axis. At this time, the rotating part does not have the check part 11, so it can be loosened, making the operation more convenient.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A nut with a check structure, comprising a nut body (1) provided with a check member (11), the nut body (1) being threadedly connected to a screw rod (2) with a check groove (21), characterized in that: The nut body (1) includes a rotating part (3) and a check part (4) detachably connected to the rotating part (3). The check part (11) is snapped onto the inner peripheral wall of the check part (4). The inner peripheral wall of the rotating part (3) is provided with an internal thread. The rotating part (3) is fixedly connected to a protrusion (5) on the side facing the check part (4). The check part (4) is sleeved on the protrusion (5). The protrusion (5) is provided with a limiting component for preventing the check part (4) from disengaging from the protrusion (5).

2. The check nut according to claim 1, wherein: The limiting assembly includes a limiting member (51) disposed on the outer peripheral wall of the protrusion (5), and a limiting port (41) that cooperates with the limiting member (51) is provided on the check portion (4). The limiting member (51) is inserted radially into the limiting port (41) along the check portion (4).

3. The check nut according to claim 2, wherein: The outer peripheral wall of the protrusion (5) is provided with a receiving recess (52) for accommodating the limiting member (51). The limiting member (51) is fixedly connected to the inner side wall of the receiving recess (52). The limiting member (51) has an elastic deformation potential energy that causes its end to tilt out of the receiving recess (52).

4. The check nut according to claim 3, wherein: The inner wall of the limiting port (41) is provided with a slot (411) that mates with the end of the limiting member (51).

5. The check nut according to claim 4, wherein: An elastic pad (6) is fitted on the protrusion (5). The elastic pad (6) is disposed between the check part (4) and the rotating part (3). The elastic pad (6) has elastic deformation potential energy to drive the check part (4) away from the rotating part (3) along the axial direction.

6. The check nut according to claim 2, wherein: The outer periphery of the stop section (4) is consistent with the outer periphery of the rotating section (3).

7. The check nut according to claim 2, wherein: The outer peripheral wall of the check valve (4) is provided with a pressing part (44) with an annular cross section. The pressing part (44) is located on the side of the limiting port (41) away from the rotating part (3).

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