Automobile bolt with high fatigue resistance

Abstract

The utility model discloses an automobile bolt with high fatigue resistance, which relates to the technical field of automobile accessories and particularly comprises a bolt body, a buffer structure is arranged at the top end of the bolt body, a screw part of the bolt body is in threaded connection with a nut, and the nut is connected with the bolt body through a connecting structure. The buffering structure comprises two buffering pads, a first shaping ring is clamped in an inner cavity of one buffering pad, clamping rods are fixed to the two ends of the first shaping ring, and inserting holes are formed in the middles of the other ends of the clamping rods. According to the automobile bolt with the high fatigue resistance, through the arrangement of the buffer structure, the nut of the automobile bolt can be separated from automobile parts connected with the nut through the buffer structure, the resilience force of the buffer pad can offset the influence of different extensions caused by relaxation, creep deformation and temperature difference, and the fatigue resistance of the automobile bolt is improved; and the shaping ring I and the shaping ring II can be quickly fixed or separated, so that the buffer pad can be quickly replaced, and the buffer structure is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an automobile bolt with strong fatigue resistance. Background Art

[0002] Automobile bolts are one of the common automobile accessories. The strength of the fatigue resistance of automobile bolts directly affects the performance of the car. The fatigue resistance of automobile bolts is affected by many factors such as the structure, size, material and manufacturing process of the bolts. The best way to improve fatigue resistance is to reduce the alternating stress at the thread. In the prior art, the commonly used method to improve the fatigue resistance of bolts is to install a buffer structure in the bolt structure, such as using elastic washers to offset the effects of relaxation, creep and temperature difference caused by different elongations. However, since the bolts and the buffer structure are in a tightly fitted state when they are in use, it is not easy to replace the buffer structure when it is damaged. In addition, during the connection process between the nut and the bolt, it is easy to loosen due to vibration and other reasons, resulting in bolt failure. Based on this, the present application proposes an automobile bolt with strong fatigue resistance. Utility Model Content

[0003] The utility model provides an automobile bolt with strong fatigue resistance, which solves the problem in the above background technology that the buffer structure of the bolt is not easy to replace when in use, and the bolt and nut are easy to loosen due to vibration and the like.

[0004] The utility model provides the following technical solution: an automobile bolt with strong fatigue resistance, comprising a bolt body, a buffer structure is provided at the top of the bolt body, a nut is threadedly connected to the screw portion of the bolt body, and the nut is connected to the bolt body through a connecting structure;

[0005] The buffer structure includes two buffer pads, one of which has a first shaping ring clamped in its inner cavity, and a clamping rod fixed at both ends of the first shaping ring, and a plug hole is provided in the middle of the other end of the clamping rod, and the other of which has a second shaping ring clamped in its inner cavity, and a clamping groove is provided at both ends of the second shaping ring, and a blocking plate is connected to the inner cavity of the clamping groove through a first spring, and an insertion rod adapted to the plug hole is movably connected to the outer side of the inner cavity of the clamping groove, and the insertion rod is connected to the second shaping ring through a second spring;

[0006] The connection structure comprises a connection ring adapted to the screw portion of the bolt body, one end of the connection ring is provided with a groove, a sealing bag is fixed in the inner cavity of the groove, and the inner cavity of the sealing bag is filled with fixing glue.

[0007] Preferably, a puncture needle is evenly and fixedly connected to the bottom of the nut.

[0008] Preferably, the inner diameter of the buffer pad is adapted to the bolt body, the buffer pad is a semicircular structure, and a placement groove is provided on the outer side of the middle part of the buffer pad, and the placement groove is adapted to the first shaping ring and the second shaping ring.

[0009] Preferably, hard sheets are fixed to the top and bottom of the placement groove.

[0010] Preferably, the insertion rod includes a vertical portion, a first horizontal portion connected to one end of the vertical portion, and a second horizontal portion connected to the other end of the vertical portion, the second horizontal portion is adapted to the socket, and a positioning protrusion is provided at one end of the second horizontal portion away from the vertical portion, and the first horizontal portion is connected to a second shaping ring via a second spring.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The automobile bolt with strong fatigue resistance can separate the nut of the automobile bolt from the automobile parts connected thereto by setting a buffer structure. The resilience of the buffer pad can offset the influence of different elongations caused by relaxation, creep and temperature difference, thereby improving the fatigue resistance of the automobile bolt. The first shaping ring and the second shaping ring can be quickly fixed or separated, so that the buffer pad can be quickly replaced, which is convenient for the use of the buffer structure.

[0013] 2. The automobile bolt with strong fatigue resistance can be provided with a connection structure, so that the puncture needle can puncture the sealing bag, and the fixing glue in the sealing bag can flow out, and the nut, the bolt body and the connecting ring can be fixed together, so as to avoid the automobile bolt from loosening during use, and ensure the reliability of the automobile bolt during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of the structure of the utility model;

[0015] Figure 2 The utility model structure Figure 1 Bottom schematic diagram;

[0016] Figure 3 This is a schematic diagram of the structural nut of the utility model;

[0017] Figure 4 This is a schematic diagram of the structural connection ring of the utility model;

[0018] Figure 5 This is an explosion diagram of the structural buffer structure of the utility model;

[0019] Figure 6 This is a schematic diagram of the connection between the structural clamping rod and the inserting rod of the utility model.

[0020] In the figure: 1. bolt body; 2. nut; 3. connecting ring; 4. buffer pad; 5. shaping ring 1; 6. shaping ring 2; 7. insertion rod; 8. puncture needle; 9. sealing bag; 10. clamping rod; 11. spring 2; 12. blocking plate; 13. spring 1; 14. clamping groove; 15. hard sheet. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides an automobile bolt with strong fatigue resistance, comprising a bolt body 1. A buffer structure is arranged at the top of the bolt body 1. The buffer structure comprises two buffer pads 4. The buffer pads 4 are semicircular structures. The inner diameter of the buffer pads 4 is adapted to the bolt body 1. When the automobile bolt is in use, the buffer pads 4 can be used to separate the nut of the bolt body 1 from automobile parts. The resilience of the buffer pads 4 can reduce the influence of automobile parts on the automobile bolt, thereby improving the fatigue resistance of the automobile bolt. The buffer pads 4 are made of flexible material, which can be rubber.

[0023] A placement groove is provided in the middle of the outer side of the buffer pad 4. A shaping ring 1 5 is clamped in the inner cavity of one placement groove, and a shaping ring 2 6 is clamped in the inner cavity of the other placement groove. A hard sheet 15 is fixed to the top and bottom of the placement groove. The hard sheet 15 can be an iron sheet or a plastic sheet. The provision of the hard sheet 15 can reduce the friction between the shaping ring 1 5 or the shaping ring 2 6 and the placement groove, making it easy to take and put the shaping ring 1 5 or the shaping ring 2 6. When in use, the hard sheet 15, the shaping ring 1 5 and the shaping ring 2 6 will not be deformed. The shaping ring 1 5 and the shaping ring 2 6 are used to support the buffer pad 4, so that the buffer pad 4 can fit closely with the automobile parts and the nut of the bolt body 1, ensuring the use effect of the buffer structure. When the shaping ring 1 5 and the shaping ring 2 6 are removed, the buffer pad 4 can be quickly removed, making it easy to replace the buffer pad 4.

[0024] A clamping rod 10 is fixed at both ends of the shaping ring 1 5, and a socket is provided in the middle of the other end of the clamping rod 10. A clamping groove 14 is provided at both ends of the shaping ring 2 6. An insertion rod 7 is movably connected to the outer side of the inner cavity of the insertion groove 14, and the insertion rod 7 is adapted to the insertion hole. The insertion rod 7 includes a vertical portion, a first horizontal portion connected to one end of the vertical portion, and a second horizontal portion connected to the other end of the vertical portion. The second horizontal portion is adapted to the insertion hole, and a positioning protrusion is provided at an end of the second horizontal portion away from the vertical portion. The first horizontal portion is connected to the shaping ring 2 6 through a spring 2 11. Through the setting of the insertion rod 7, when the clamping rod 10 is inserted into the inner cavity of the clamping groove 14, when the socket is aligned with the second horizontal portion of the insertion rod 7, under the action of the rebound force of the spring 2 11, the insertion rod 7 can be inserted into the insertion hole, thereby fixing the clamping rod 10, so that the shaping ring 1 5 and the shaping ring 2 6 are fixed together, and then the positions of the two buffer pads 4 can remain unchanged, and the buffer structure is connected to the bolt body 1, which is convenient for the use of the bolt body 1.

[0025] A blocking plate 12 is connected to the inner cavity of the slot 14 via a spring 13. The blocking plate 12 can block the second horizontal portion of the insertion rod 7, so that when the insertion rod 7 is inserted into the inner cavity of the slot 14, the insertion rod 7 can automatically engage with the clamping rod 10, thereby improving the convenience of fixing the buffer structure.

[0026] The screw portion of the bolt body 1 is threadedly connected with a nut 2, and the nut 2 is connected to the bolt body 1 through a connecting structure. The connecting structure includes a connecting ring 3 adapted to the screw portion of the bolt body 1, and one end of the connecting ring 3 is provided with a groove, and a sealing bag 9 is fixed in the inner cavity of the groove, and the inner cavity of the sealing bag 9 is filled with fixing glue. The bottom of the nut 2 is evenly fixedly connected with a puncture needle 8. When the connecting ring 3 is tightly fitted with the bottom of the nut 2, the puncture needle 8 can puncture the sealing bag 9, and the fixing glue in the sealing bag 9 flows out, which can fix the nut 2, the bolt body 1 and the connecting ring 3 together, and prevent the automobile bolt from loosening during use. The type of fixing glue is selected according to the material of the nut 2, the connecting ring 3 and the bolt body 1. In some embodiments of the present application, the material of the nut 2, the connecting ring 3 and the bolt body 1 is metal, and the fixing glue is a quick-drying metal glue.

[0027] In summary: when the automobile bolt with strong fatigue resistance is used, the buffer structure is used to separate the nut part of the bolt body 1 from the automobile parts. The resilience of the buffer structure can reduce the influence of the automobile parts on the bolt body 1, and improve the fatigue resistance of the bolt body 1. When the buffer pad 4 is damaged and needs to be replaced, the staff pulls the insertion rod 7 outward until the insertion rod 7 can no longer move. At this time, the insertion rod 7 is separated from the clamping rod 10. The staff pulls the shaping ring 2 6 outward through the insertion rod 7 until the shaping ring 2 6 is separated from the buffer pad 4. The staff pulls the shaping ring 1 5 outward, and the shaping ring 1 5 can be separated from the other buffer pad 4 in contact with it. The staff can quickly remove the old buffer pad 4 and replace the new buffer pad. After the punch pad 4 is placed, the staff reinserts the shaping ring 2 6 and the shaping ring 1 5 into the placement groove. During the insertion of the clamping rod 10 into the clamping groove 14, the clamping rod 10 can push the blocking plate 12 to move, so that the blocking plate 12 is gradually separated from the second horizontal part of the insertion rod 7. When the insertion hole is aligned with the second horizontal part, under the action of the rebound force of the spring 2 11, the second horizontal part of the insertion rod 7 is inserted into the insertion hole, so as to fix the shaping ring 2 6 and the shaping ring 1 5. The new buffer pad 4 is limited and supported by the shaping ring 2 6 and the shaping ring 1 5. The new buffer pad 4 can fit tightly with the nut of the bolt body 1 and automobile parts, and rely on its own rebound force to offset the influence of different elongations caused by relaxation, creep and temperature difference. When it is necessary to prevent the nut 2 from loosening, the staff puts the connecting ring 3 on the screw part of the bolt body 1 until the connecting ring 3 and the nut 2 are tightly fitted. At this time, the puncture needle 8 pierces the sealing bag 9, and the fixing glue in the sealing bag 9 flows out, which can fix the nut 2, the bolt body 1 and the connecting ring 3 together, thereby preventing the automobile bolt from loosening during use.

[0028] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art and will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A fatigue-resistant automobile bolt, comprising a bolt body (1), characterized in that: A buffer structure is provided at the top end of the bolt body (1); a nut (2) is threadedly connected to the screw portion of the bolt body (1); and the nut (2) is connected to the bolt body (1) via a connecting structure; The buffer structure comprises two buffer pads (4), a first shaping ring (5) is clamped in the inner cavity of one buffer pad (4), both ends of the first shaping ring (5) are fixed with clamping rods (10), the middle part of the other end of the clamping rod (10) is provided with a plug hole, and a second shaping ring (6) is clamped in the inner cavity of the other buffer pad (4), both ends of the second shaping ring (6) are provided with clamping grooves (14), the inner cavity of the clamping groove (14) is connected with a blocking plate (12) through a first spring (13), and the outer side of the inner cavity of the clamping groove (14) is movably connected with an insertion rod (7) adapted to the plug hole, and the insertion rod (7) is connected to the second shaping ring (6) through a second spring (11); The connection structure comprises a connection ring (3) adapted to the screw portion of the bolt body (1), one end of the connection ring (3) is provided with a groove, a sealing bag (9) is fixed in the inner cavity of the groove, and the inner cavity of the sealing bag (9) is filled with fixing glue.

2. The automobile bolt with high fatigue resistance according to claim 1, characterized in that: The bottom of the nut (2) is evenly and fixedly connected with a puncture needle (8).

3. The automobile bolt with high fatigue resistance according to claim 1, characterized in that: The inner diameter of the buffer pad (4) is adapted to the bolt body (1); the buffer pad (4) is a semicircular structure; a placement groove is provided on the outer side of the middle of the buffer pad (4); the placement groove is adapted to the first shaping ring (5) and the second shaping ring (6).

4. The automobile bolt with high fatigue resistance according to claim 3, characterized in that: The top and bottom of the placement groove are both fixed with hard sheets (15).

5. The automobile bolt with high fatigue resistance according to claim 1, characterized in that: The insertion rod (7) comprises a vertical portion, a first horizontal portion connected to one end of the vertical portion, and a second horizontal portion connected to the other end of the vertical portion, the second horizontal portion is adapted to the insertion hole, and a positioning protrusion is provided at one end of the second horizontal portion away from the vertical portion, and the first horizontal portion is connected to the second shaping ring (6) via a second spring (11).

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