Device for preventing nut from loosening

Abstract

The utility model discloses a device for preventing a nut from loosening, and relates to the technical field of nuts. The device for preventing the nut from loosening comprises a positioning plate, a screw rod is arranged on the positioning plate in an inserted mode, a positioning ring is arranged on the surface of the screw rod in a sleeved mode, a round hole is formed in one side of the positioning ring, a bolt is arranged in the round hole in an inserted mode, a groove is formed in one end of the bolt, and a clamping groove is formed in the surface of the groove. Then the bolt is tightened, the clamping groove in the bolt is clamped in the threaded groove in the screw rod, so that positioning of the positioning ring is facilitated, the nut body is tightened, the limiting rod and the ball on the nut body are clamped into the wedge-shaped groove along the wedge-shaped groove, the nut body is tightened during anticlockwise rotation, and the ball can rotate along the wedge-shaped groove; when the nut body is loosened clockwise, the balls are clamped in the wedge-shaped grooves, the nut body can be loosened only by pulling the limiting rod on the pull ring, and loosening in the subsequent using process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, in particular to a device for preventing nuts from loosening. Background Technique

[0002] A nut is a screw cap, a part used to tighten together with a bolt or a screw rod. It is an element that must be used in all manufacturing machinery. According to different materials, it is divided into several major types such as carbon steel, stainless steel, (such as copper), etc. A nut is a part that tightly connects mechanical equipment. Through the internal thread, nuts and bolts of the same specification can be connected together. For example, a nut of M4-P0.7 can only be connected with a bolt of the M4-P0.7 series (in the nut, M4 means the inner diameter of the nut is about 4 mm, and 0.7 means the distance between two thread teeth is 0.7 mm). The same is true for American-made products. For example, a nut of 1 / 4-20 can only be matched with a screw rod of 1 / 4-20 (1 / 4 means the inner diameter of the nut is about 0.25 inches, and 20 means that there are 20 teeth in every inch). In the existing patent, the patent publication number is CN107989916B, which discloses a device for preventing nuts from loosening, including a nut, a rotating shaft and a top cover; the nut is a hollow cylindrical structure, and the inner wall of the nut is provided with a first toothed structure; a positioning column is provided at the top of the rotating shaft, a hole is provided on one side of the positioning column, a top bead is provided in the hole, and a spring piece is provided below the top bead; the top cover is a cylindrical structure, and a second toothed structure matching the first toothed structure is provided on the circumferential surface. A square hole is provided on the side of the top cover facing the nut, and a groove is provided on the hole wall of the square hole. The positioning column of the rotating shaft is inserted from one end of the nut and placed in the square hole, and the top bead is matched with the groove. Through the tight installation and cooperation of the rotating shaft with the nut and the top cover, the present invention ensures that the rubber roller will be restricted by the nut during the mechanical rotation process and will no longer escape. The top cover ensures the relative rotation of the nut and the rotating shaft, ensuring the anti-loosening property of the device.

[0003] Regarding the above related technologies, the inventor believes that there are the following defects: during the actual application process, the nut body will loosen. If its loosening cannot be prevented and positioned, the nut body will loosen during subsequent use, thus affecting the subsequent positioning and tightening operations. Therefore, we propose a device for preventing nuts from loosening to solve the above problems. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a device for preventing nuts from loosening, solving the problems raised in the above background technique.

[0005] To achieve the above object, the utility model is realized by the following technical solutions: A device for preventing nut loosening, including a positioning plate, a screw rod is inserted on the positioning plate, a positioning ring is sleeved on the surface of the screw rod, a round hole is opened on one side of the positioning ring, a bolt is inserted inside the round hole, a groove is opened at one end of the bolt, a card slot is opened on the surface of the groove, and one end of the bolt is threadedly clamped with the screw rod.

[0006] A wedge-shaped groove is opened on one side of the positioning ring, a nut body is threadedly connected to the surface of the screw rod, a cavity is opened inside the nut body, a limiting rod is inserted inside the cavity, one end of the limiting rod penetrates through the nut body and extends to the outside of the nut body and is inlaid with a ball, a fixing ring is fixedly installed on the surface of the limiting rod located inside the cavity, and a tension spring is arranged around the surface of the limiting rod.

[0007] Preferably, a screw hole for the bolt to pass through is opened on the positioning ring, and the bolt is threadedly connected with the screw hole. A round hole for the screw rod to pass through is opened on the positioning ring, and the inner wall of the round hole is slidably connected with the surface of the screw rod.

[0008] Preferably, an anti-slip ring is fixedly installed on one side of the positioning plate, anti-slip lines are opened on one side of the anti-slip ring, the anti-slip ring is made of rubber, anti-slip strips are fixedly installed on the surface of the anti-slip ring, anti-slip lines are opened on one side of the anti-slip strips, and the other side of the anti-slip strips is fixedly connected with one side of the positioning plate.

[0009] Preferably, one end of the tension spring is fixedly connected with one side of the fixing ring, and the other end of the tension spring is fixedly connected with one side of the inner wall of the cavity.

[0010] Preferably, a rod hole for the limiting rod to pass through is opened on one side of the nut body, and the inner wall of the rod hole is slidably connected with the surface of the limiting rod.

[0011] Preferably, the other end of the limiting rod penetrates through one side of the nut body and extends to the outside of the nut body and is fixedly connected through a pull ring, and a through hole for the limiting rod to pass through is opened on the nut body.

[0012] Preferably, the ball corresponds to the wedge-shaped groove, and a buffer piece is fixedly installed inside the wedge-shaped groove, and the buffer piece is made of rubber.

[0013] Beneficial effects

[0014] The utility model provides a device for preventing nut loosening. Compared with the prior art, it has the following

[0015] Beneficial effects:

[0016] 1. The device for preventing nut loosening sleevs a positioning ring on the screw rod, and then tightens the bolt. The clamping groove on the bolt is clamped on the thread groove on the screw rod, so as to facilitate the positioning of the positioning ring. At the same time, tighten the nut body, and the limiting rod and the ball on the nut body are inserted into the inside of the wedge-shaped groove along the wedge-shaped groove. Since the wedge-shaped groove is set to be inclined, when rotating counterclockwise, the nut body is tightened, and the ball can rotate along the wedge-shaped groove. When loosening the nut body clockwise, the ball is stuck inside the wedge-shaped groove, and it is necessary to pull the limiting rod on the pull ring to loosen the nut body, which improves the stability of the nut body during use and avoids loosening during subsequent use.

[0017] 2. The device for preventing nut loosening places the positioning plate on the component to be positioned. The anti-slip ring on one side of the positioning plate contacts one side of the positioning component, and at the same time, the anti-slip strip provides anti-slip function, thereby increasing the anti-slip property of the device and improving the use efficiency of the device. Description of the Drawings

[0018] Figure 1 is a schematic three-dimensional structure diagram of the first perspective of the present utility model;

[0019] Figure 2 is a schematic three-dimensional structure diagram of the second perspective of the present utility model;

[0020] Figure 3 is a schematic three-dimensional structure diagram of the positioning ring of the present utility model;

[0021] Figure 4 is a schematic three-dimensional sectional structure diagram of the nut body of the present utility model.

[0022] In the figure: 1, positioning plate; 2, screw rod; 3, positioning ring; 4, bolt; 5, nut body; 6, limiting rod; 7, ball; 8, fixed ring; 9, tension spring; 10, anti-slip ring; 11, anti-slip strip; 12, pull ring; 13, buffer sheet. Detailed Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-4, the present utility model provides a technical solution: a device for preventing nut loosening, including a positioning plate 1, a screw rod 2 is inserted on the positioning plate 1, a positioning ring 3 is sleeved on the surface of the screw rod 2, a round hole is opened on one side of the positioning ring 3, a bolt 4 is inserted inside the round hole, a groove is opened at one end of the bolt 4, a card slot is opened on the surface of the groove, and one end of the bolt 4 is threadedly clamped with the thread on the screw rod 2.

[0025] A wedge-shaped groove is opened on one side of the positioning ring 3, a nut body 5 is threadedly connected to the surface of the screw rod 2, a cavity is opened inside the nut body 5, a limiting rod 6 is inserted inside the cavity, one end of the limiting rod 6 penetrates through the nut body 5 and extends to the outside of the nut body 5 and is inlaid with a ball 7, a fixing ring 8 is fixedly installed on the surface of the limiting rod 6 located inside the cavity, and a tension spring 9 is arranged around the surface of the limiting rod 6.

[0026] The positioning ring 3 is sleeved on the screw rod 2, and then the bolt 4 is tightened. The card slot on the bolt 4 is clamped on the thread groove on the screw rod 2, so as to facilitate the positioning of the positioning ring 3. At the same time, the nut body 5 is tightened. The limiting rod 6 and the ball 7 on the nut body 5 are inserted into the inside of the wedge-shaped groove along the wedge-shaped groove. Since the wedge-shaped groove is set to be inclined, when rotating counterclockwise, the nut body 5 is tightened, and the ball 7 can rotate along the wedge-shaped groove. When loosening the nut body 5 clockwise, the ball 7 is stuck inside the wedge-shaped groove, and it is necessary to pull the limiting rod 6 on the pull ring 12 to loosen the nut body 5, which improves the stability of the use of the nut body 5 and avoids loosening during subsequent use.

[0027] Refer to Figure 2 , a screw hole for the bolt 4 to pass through is opened on the positioning ring 3, and the bolt 4 is threadedly connected with the screw hole. A round hole for the screw rod 2 to pass through is opened on the positioning ring 3, and the inner wall of the round hole is slidably connected with the surface of the screw rod 2. The arranged screw hole and round hole achieve the effect of facilitating the subsequent passing of the bolt 4 and the screw rod 2 during use, which is convenient for subsequent use.

[0028] Refer to Figure 1 , an anti-slip ring 10 is fixedly installed on one side of the positioning plate 1, anti-slip lines are opened on one side of the anti-slip ring 10, the anti-slip ring 10 is made of rubber, anti-slip strips 11 are fixedly installed on the surface of the anti-slip ring 10, anti-slip lines are opened on one side of the anti-slip strips 11, and the other side of the anti-slip strips 11 is fixedly connected with one side of the positioning plate 1.

[0029] The positioning plate 1 is placed on the component to be positioned. The anti-slip ring 10 on one side of the positioning plate 1 contacts one side of the positioning component, and at the same time, the anti-slip strips 11 prevent slipping, thereby increasing the anti-slip property of the device and improving the use efficiency of the device.

[0030] Refer to Figure 4, one end of the tension spring 9 is fixedly connected to one side of the fixed ring 8, and the other end of the tension spring 9 is fixedly connected to one side of the inner wall of the cavity. The provided tension spring 9 facilitates the reset operation of the limiting rod 6 on the fixed ring 8 during use, thereby also improving the reset efficiency of subsequent components.

[0031] Refer to Figure 4 , a rod hole for the limiting rod 6 to pass through is formed on one side of the nut body 5, and the inner wall of the rod hole is slidably connected to the surface of the limiting rod 6. The provided rod hole achieves the effect of facilitating the limitation of the limiting rod 6 during use, which is convenient for subsequent use.

[0032] Refer to Figure 2 , the other end of the limiting rod 6 penetrates through one side of the nut body 5 and extends to the outside of the nut body 5 and is fixedly connected through a pull ring 12, and a through hole for the limiting rod 6 to pass through is formed on the nut body 5. The provided pull ring 12 achieves the effect of facilitating the pulling of the limiting rod 6 on the pull ring 12 during use, which is convenient for the operation of subsequent staff.

[0033] Refer to Figure 2 , the ball 7 corresponds to the wedge-shaped groove, and a buffer piece 13 is fixedly installed inside the wedge-shaped groove. The buffer piece 13 is made of rubber. The provided buffer piece 13 achieves the effect of facilitating the positioning and buffering of the ball 7 during use, thereby also facilitating subsequent operations.

[0034] During operation, the positioning ring 3 is sleeved on the screw rod 2, and then the bolt 4 is tightened. The card slot on the bolt 4 is clamped on the thread groove on the screw rod 2, thereby facilitating the positioning of the positioning ring 3. At the same time, the nut body 5 is tightened, and the limiting rod 6 and the ball 7 on the nut body 5 are inserted into the inside of the wedge-shaped groove along the wedge-shaped groove. Since the wedge-shaped groove is set to be inclined, when rotated counterclockwise, the nut body 5 is tightened, and the ball 7 can rotate along the wedge-shaped groove. When the nut body 5 is loosened clockwise, the ball 7 is stuck inside the wedge-shaped groove, and it is necessary to pull the limiting rod 6 on the pull ring 12 to loosen the nut body 5, which improves the stability of the use of the nut body 5 and avoids loosening during subsequent use. The positioning plate 1 is placed on the component to be positioned. The anti-slip ring 10 on one side of the positioning plate 1 contacts one side of the positioning component, and at the same time, the anti-slip strip 11 provides anti-slip function, thereby increasing the anti-slip property of the device and improving the use efficiency of the device.

[0035] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A device for preventing nut loosening, comprising a positioning plate (1), characterized in that: A screw rod (2) is inserted into the positioning plate (1). A positioning ring (3) is sleeved on the surface of the screw rod (2). A round hole is formed on one side of the positioning ring (3). A bolt (4) is inserted into the round hole. A groove is formed at one end of the bolt (4), and a card slot is formed on the surface of the groove. One end of the bolt (4) is threadedly clamped with the screw rod (2). A wedge-shaped groove is formed on one side of the positioning ring (3). A nut body (5) is threadedly connected to the surface of the screw rod (2). A cavity is formed inside the nut body (5). A limiting rod (6) is inserted into the cavity. One end of the limiting rod (6) penetrates through the nut body (5) and extends to the outside of the nut body (5) and is inlaid with a ball (7). A fixing ring (8) is fixedly installed on the surface of the limiting rod (6) located inside the cavity. A tension spring (9) is wound around the surface of the limiting rod (6).

2. The device for preventing nut loosening according to claim 1, characterized in that: A screw hole for the bolt (4) to pass through is formed on the positioning ring (3), and the bolt (4) is threadedly connected to the screw hole. A round hole for the screw rod (2) to pass through is formed on the positioning ring (3), and the inner wall of the round hole is slidably connected to the surface of the screw rod (2).

3. The device for preventing nut loosening according to claim 1, characterized in that: An anti-slip ring (10) is fixedly installed on one side of the positioning plate (1). Anti-slip lines are formed on one side of the anti-slip ring (10). The anti-slip ring (10) is made of rubber. Anti-slip strips (11) are fixedly installed on the surface of the anti-slip ring (10). Anti-slip lines are formed on one side of the anti-slip strips (11), and the other side of the anti-slip strips (11) is fixedly connected to one side of the positioning plate (1).

4. A device for preventing nut loosening according to claim 1, characterized in that: One end of the tension spring (9) is fixedly connected to one side of the fixing ring (8), and the other end of the tension spring (9) is fixedly connected to one side of the inner wall of the cavity.

5. A device for preventing nut loosening according to claim 1, characterized in that: A rod hole for the limiting rod (6) to pass through is formed on one side of the nut body (5), and the inner wall of the rod hole is slidably connected to the surface of the limiting rod (6).

6. The device for preventing nut loosening according to claim 1, wherein: The other end of the limiting rod (6) penetrates through one side of the nut body (5) and extends to the outside of the nut body (5) and is fixedly connected through a pull ring (12), and a through hole for the limiting rod (6) to pass through is formed on the nut body (5).

7. The device for preventing nut loosening according to claim 1, characterized in that: The ball (7) corresponds to the wedge-shaped groove, and a buffer piece (13) is fixedly installed inside the wedge-shaped groove. The buffer piece (13) is made of rubber.

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