Nut structure capable of preventing bolt from being bent and fractured

Abstract

The utility model discloses a nut structure for preventing bolt bending fracture, which comprises a fastening part a and a bolt, the bottom end of the fastening part a is connected with the top end of a fastening part b, a bolt rod penetrates through the fastening part a and the fastening part b, the bottom end of the bolt rod is connected with a bolt head, and the top end of the bolt rod is connected with the fastening part b. The top end of the bolt head is connected with the bottom end of the fastening part a, the top end of the bolt head is connected with the bottom end of the fastening part b, the top end of the bolt head is provided with a rubber gasket, the rubber gasket is also connected with the bottom end of the fastening part b, the bolt rod is provided with a fastening nut, and the fastening nut is connected with the top end of the fastening part a. According to the nut structure capable of preventing the bolt from being bent and fractured, when the bolt is installed, the angle of the bolt head arranged at the bottom of the bolt rod can be changed according to the inclination of a fastened part, and therefore after the bolt is installed, the whole nut structure is even in stress and stable in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical fasteners, and particularly relates to a nut structure for preventing bolts from bending and breaking. Background Technique

[0002] A nut is a screw cap, a part used to tighten together with a bolt or a screw rod for fastening, and is an essential component for all manufacturing machinery. There are many types of nuts. The common ones we see are national standard, British standard, American standard, and Japanese standard nuts. Nuts are divided into several major types according to different materials, such as carbon steel, high-strength, stainless steel, and plastic-steel. During use, the fastening parts are tightened and fixed through the connection of bolts and nuts. However, when the contact surface between the fastening part and the bolt is in an inclined state, the bolt often bends and breaks.

[0003] In the common bolt and nut structures on the market at present, when fastening parts are fixed, due to the inclined state of the contact surface between the fastened part and the support surface of the bolt head, eccentric loading occurs, causing the bolt to bend and break, which affects the progress of the assembly operation. In view of the above problems, innovative designs are made on the basis of the original bolt and nut structures. Content of the Utility Model

[0004] The purpose of the utility model is to provide a nut structure for preventing bolts from bending and breaking, so as to solve the problem that in the common bolt and nut structures on the market at present, when fastening parts are fixed, due to the inclined state of the contact surface between the fastened part and the support surface of the bolt head, eccentric loading occurs, causing the bolt to bend and break, which affects the progress of the assembly operation as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A nut structure for preventing bolts from bending and breaking, including a fastening part a and a bolt rod. The bottom end of the fastening part a is connected to the top end of the fastening part b, and the fastening part a and the fastening part b are penetrated by the bolt rod. The bottom end of the bolt rod is connected to a bolt head, and the top end of the bolt head is connected to the bottom end of the fastening part b. A rubber gasket is installed at the top end of the bolt head, and the rubber gasket is also connected to the bottom end of the fastening part b. A fastening nut is provided on the bolt rod, and the fastening nut is connected to the top end of the fastening part a.

[0006] Preferably, both the fastening part a and the fastening part b are provided with openings.

[0007] Preferably, an external thread is provided on the outer side of the bolt rod, and the bolt rod and the internal thread provided inside the fastening nut form a threaded connection structure through the external thread.

[0008] Preferably, rotating shafts are provided on both sides of the bottom end of the bolt rod, and the bolt rod and the rotating grooves provided on both sides inside the bolt head form a rotating connection structure through the rotating shafts.

[0009] Preferably, the width of the slot in the middle inside the bolt head is slightly larger than the outer diameter of the bolt rod.

[0010] Preferably, grooves are provided on both sides of the top end of the bolt head, and rubber gaskets are installed in the grooves.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: for the nut structure that prevents the bolt from bending and breaking,

[0012] 1. When installing the bolt, the bolt head provided at the bottom of the bolt rod can change its own angle according to the inclination of the fastened part, so that after the bolt is installed, the entire nut structure is evenly stressed and the structure is stable;

[0013] 2. Through the rubber gaskets provided on the bolt head, when fixing the bolt, the bolt head can fit the fastened part more closely, making the entire nut structure more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic sectional view of the overall structure of the present utility model;

[0016] Figure 3 is an exploded schematic diagram of the overall parts of the present utility model;

[0017] Figure 4 is a schematic front sectional view of the overall structure of the present utility model;

[0018] Figure 5 is a schematic diagram of the connection structure between the bolt rod and the fastening nut of the present utility model.

[0019] In the figure: 1, fastening part a; 2, fastening part b; 3, bolt rod; 301, external thread; 302, rotating shaft; 4, fastening nut; 401, internal thread; 5, bolt head; 501, groove; 502, rotating groove; 6, rubber gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-5 , the present utility model provides a technical solution: a nut structure for preventing bolts from bending and breaking, including a fastening part a1 and a bolt rod 3. The bottom end of the fastening part a1 is connected to the top end of the fastening part b2, and the fastening part a1 and the fastening part b2 are penetrated by the bolt rod 3. The bottom end of the bolt rod 3 is connected to the bolt head 5, and the top end of the bolt head 5 is connected to the bottom end of the fastening part b2. A rubber gasket 6 is installed at the top end of the bolt head 5, and the rubber gasket 6 is also connected to the bottom end of the fastening part b2. A fastening nut 4 is provided on the bolt rod 3, and the fastening nut 4 is connected to the top end of the fastening part a1;

[0022] Both the fastening part a1 and the fastening part b2 are provided with openings, which is beneficial for the bolt rod 3 to penetrate through the fastening part a1 and the fastening part b2 through the openings, so as to fix them subsequently;

[0023] External threads 301 are provided on the outer side of the bolt rod 3, and the bolt rod 3 and the internal threads 401 provided on the inner side of the fastening nut 4 form a threaded connection structure, which is beneficial for fixing the fastening nut 4 on the bolt rod 3 through the threads;

[0024] Rotating shafts 302 are provided on both sides of the bottom end of the bolt rod 3, and the bolt rod 3 and the rotating grooves 502 provided on both sides inside the bolt head 5 form a rotating connection structure, which is beneficial for the bolt head 5 to rotate and change its own angle through the provided rotating shafts 302;

[0025] The width of the slot in the middle of the bolt head 5 is slightly larger than the outer diameter of the bolt rod 3, which is beneficial for the bolt head 5 not to be interfered when rotating;

[0026] Grooves 501 are provided on both sides of the top end of the bolt head 5, and rubber gaskets 6 are installed in the grooves 501, which is beneficial for the bolt head 5 to fit more closely to the fastening part b2 when fixing the bolt.

[0027] Working principle: According to Figures 1-5, during use, through the bolt head 5 provided at the bottom of the bolt rod 3, it can rotate around the rotation axis 302 to change its own inclination angle. When there is a slope on the fastened part b2, the bolt head 5 can rotate to change its own angle, so that the top of the bolt head 5 can maintain a state parallel to the bottom end of the fastened part b2, thereby making the force on the bolt rod 3 uniform. The rubber gasket 6 provided on the bolt head 5 can make the bolt head 5 fit more closely to the fastened part b2 when fixing the bolt. After tightening the fastening nut 4, the entire nut structure is uniformly stressed and structurally stable, and will not cause eccentric loading and bending and fracture due to the inclined contact surface between the part and the bolt support surface. The above is the working process of the entire device, and the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nut structure for preventing a bolt from bending and breaking, comprising a fastening part a (1) and a bolt rod (3), characterized in that: The bottom end of the fastening part a (1) is connected to the top end of the fastening part b (2), and the fastening part a (1) and the fastening part b (2) are penetrated by a bolt rod (3). The bottom end of the bolt rod (3) is connected to a bolt head (5), and the top end of the bolt head (5) is connected to the bottom end of the fastening part b (2). A rubber gasket (6) is installed at the top end of the bolt head (5), and the rubber gasket (6) is also connected to the bottom end of the fastening part b (2). A fastening nut (4) is provided on the bolt rod (3), and the fastening nut (4) is connected to the top end of the fastening part a (1).

2. The nut structure for preventing bolt bending and fracture according to claim 1, characterized in that: Open holes are provided on both the fastening part a (1) and the fastening part b (2).

3. A nut structure for preventing bolt bending and fracture according to claim 1, characterized in that: External threads (301) are provided on the outer side of the bolt rod (3), and the bolt rod (3) and the internal threads (401) provided on the inner side of the fastening nut (4) form a threaded connection structure through the external threads (301).

4. A nut structure for preventing bolts from bending and breaking according to claim 1, characterized in that: Rotating shafts (302) are provided on both sides of the bottom end of the bolt rod (3), and the bolt rod (3) and the rotating grooves (502) provided on both sides inside the bolt head (5) form a rotating connection structure through the rotating shafts (302).

5. The nut structure for preventing bolt bending and fracture according to claim 1, characterized in that: The width of the slot in the middle inside the bolt head (5) is slightly larger than the outer diameter of the bolt rod (3).

6. A nut structure for preventing bolt bending and fracture according to claim 1, characterized in that: Grooves (501) are provided on both sides of the top end of the bolt head (5), and rubber gaskets (6) are installed in the grooves (501).

Images