High-strength screw for automobile chassis

Abstract

The utility model relates to a high-strength screw for an automobile chassis, which belongs to the technical field of screws and comprises a screw rod, a hexagonal screw head is arranged on the screw rod, a nut is connected onto the screw rod, a protective nut cap is clamped on the hexagonal screw head, a clamping component for fixing the hexagonal screw head is arranged on the protective nut cap, and a buffer component is connected onto the nut. A water retaining ring is arranged on the lower surface of the protective nut, a connecting groove is clamped in the protective nut, a clamping groove is formed in the hexagonal screw head, a mounting groove is formed in the connecting groove, the clamping assembly comprises a wedge-shaped block, the wedge-shaped block is clamped in the mounting groove in a sliding mode, the wedge-shaped block is clamped with the clamping groove, and certain impact force can be buffered through the buffering assembly; and through the clamping assembly, the water retaining ring and the protective nut, the protective nut and the screw rod can be fixed, the hexagonal screw head can be protected, the situation that the service life of the screw rod is affected due to the fact that water makes contact with the screw rod can be reduced, and the protective nut can be conveniently and flexibly disassembled and assembled.

Description

Technical Field

[0001] This utility model relates to the field of screw technology, and in particular to a high-strength screw for automotive chassis. Background Technology

[0002] The automobile chassis is an important component of a car, consisting of four parts: the transmission system, the running system, the steering system, and the braking system. Its main function is to support and install the car engine and its various component assemblies, forming the overall shape of the car, receiving power from the engine, and ensuring the normal operation of the car. Car chassis bolts are an important part of the car chassis. The chassis is assembled by the bolts. However, most existing chassis bolts have exposed bolt heads, which are easily bumped by the uneven parts of the surface of mechanical equipment. During use, they are also easily scratched by external objects, causing surface damage, thus affecting the appearance and lifespan of the equipment.

[0003] For example, announcement number CN209012219U describes a safety screw for an automobile chassis. The screw includes a chassis, a bolt mounted on the chassis surface, and the bolt penetrates the chassis and extends to the other side of the chassis surface. A limiting plate is mounted on the middle of the outer surface of the bolt. Multiple springs are mounted on the lower end of the limiting plate, evenly distributed on the lower surface of the limiting plate. A movable plate is fitted onto the bolt surface located below the limiting plate, with one end of each spring connected to the upper surface of the movable plate. A retaining sleeve is fitted onto the outer side of the bolt below the movable plate. Two hinged seats are mounted symmetrically on the outer side of the retaining sleeve. A sleeve is hinged to each of the two hinged seats, with a rod attached to one end of each sleeve and a hook attached to one end of the rod. Ring buckles are installed on both sides of the lower surface of the chassis, and the hooks are hooked into the ring buckles. This invention has a simple structure, is easy to use, and effectively prevents screws from falling off and causing safety accidents.

[0004] The aforementioned safety screw for automobile chassis has an exposed screw head, which is easily bumped by the uneven parts of the mechanical equipment surface. During use, it is easily scratched by external objects, causing surface damage and thus affecting the appearance and lifespan of the equipment. Utility Model Content

[0005] To overcome the technical defects of the existing technology, this utility model provides a high-strength automotive chassis screw that can protect the screw head and extend the service life of the screw.

[0006] The technical solution adopted by this utility model is as follows: it includes a screw rod, a hexagonal screw head is provided on the screw rod, a nut is connected to the screw rod, a protective nut is snapped onto the hexagonal screw head, a snapping component for fixing the hexagonal screw head is provided on the protective nut, a buffer component is connected to the nut, and a water-blocking ring is provided on the lower surface of the protective nut.

[0007] Preferably, in order to facilitate the installation of the snap-fit ​​assembly, the protective nut is provided with a connecting groove, the hexagonal screw head is provided with a snap-fit ​​groove, and the connecting groove is provided with an installation groove.

[0008] Preferably, in order to facilitate the adjustment of the position of the wedge block, the snap-fit ​​assembly includes a wedge block, the wedge block is slidably snapped into the mounting groove, and the wedge block is snapped into the snap-fit ​​groove. A moving rod is connected to the wedge block, the moving rod is fixedly connected to the protective nut, and the moving rod is inserted into the protective nut. By moving the moving block, the wedge block moves.

[0009] Preferably, to facilitate the reset of the wedge block, a first spring is sleeved on the moving rod. The two ends of the first spring are fixedly connected to the wedge block and the mounting groove, respectively. The protective nut engages with the hexagonal screw head, exerting a certain pressure on the wedge block. When the wedge block moves, the first spring is compressed, and the moving rod moves. When the wedge block aligns with the mounting groove, the elastic restoring force of the first spring engages the wedge block with the mounting groove, thereby fixing the protective nut and the hexagonal screw head. Moving the moving rod moves the wedge block, allowing the screw sleeve to be removed.

[0010] Preferably, the protective nut has a sliding hole for installing the buffer assembly.

[0011] Preferably, for the slider to slide, the buffer assembly includes a slide rod, which is fixedly installed inside the slide hole, and a slider is inserted into the slide rod, the slider being slidably engaged inside the slide hole.

[0012] Preferably, a buffer plate is connected between the sliders to allow the buffer plate to move.

[0013] Preferably, in order to facilitate the reset of the buffer plate, a second spring is sleeved on the slide rod, and the two ends of the second spring are fixedly connected to the slider and the slide hole, respectively.

[0014] The beneficial effects of this utility model are: by using the snap-fit ​​component, water-blocking ring, and protective nut, the protective nut can be fixed to the screw rod, which can protect the hexagonal screw head, reduce water contact with the screw rod and affect the service life of the screw rod, and facilitate flexible disassembly and installation of the protective nut. Through the buffer component, some impact forces can be buffered, reducing damage to the protective nut and hexagonal screw head. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of the present invention from a side view.

[0016] Figure 2This is a structural schematic diagram of the present invention from a downward viewing angle.

[0017] Figure 3 This is a schematic diagram of the structure of the protective nut of this utility model.

[0018] Figure 4 This is a partial structural schematic diagram of the present invention.

[0019] Figure 5 This is a schematic diagram of the snap-fit ​​assembly of this utility model.

[0020] Figure 6 This is a schematic diagram of the structure of the buffer component of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Screw; 2. Nut; 3. Hexagonal screw head; 4. Protective nut; 5. Snap-fit ​​assembly; 501. Wedge block; 502. Moving rod; 503. First spring; 6. Buffer assembly; 601. Slide rod; 602. Slider; 603. Buffer plate; 604. Second spring; 7. Connecting groove; 8. Snap-fit ​​groove; 9. Mounting groove; 10. Sliding hole; 11. Water-retaining ring. Detailed Implementation

[0022] The present invention will be further 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 protection scope of the present invention.

[0023] like Figures 1-6 As shown, this embodiment provides a high-strength automotive chassis screw, including a screw rod 1, a hexagonal screw head 3 on the screw rod 1, a nut 2 connected to the screw rod 1, and a protective nut 4 snapped onto the hexagonal screw head 3. The protective nut 4 protects the hexagonal screw head 3 from impacts that could affect disassembly. The protective nut 4 has a snap-fit ​​component 5 for fixing the hexagonal screw head 3. A buffer component 6 is connected to the nut 2. When an external force impacts, the buffer component 6 can buffer the impact force, thereby protecting the hexagonal screw head 3 from damage. A water-blocking ring 11 is provided on the lower surface of the protective nut 4. The water-blocking ring 11 can block water from the hexagonal screw head 3 and the screw rod 1. The screw rod 1, the hexagonal screw head 3, and the nut 2 are made of Q460 steel, a low-alloy high-strength steel with high strength characteristics.

[0024] like Figure 2As shown, the protective nut 4 has a connecting groove 7, the hexagonal screw head 3 has a snap-fit ​​groove 8, the connecting groove 7 has an installation groove 9, the snap-fit ​​assembly 5 includes a wedge block 501, the wedge block 501 is slidably snapped into the installation groove 9, and the wedge block 501 is snapped into the snap-fit ​​groove 8, a moving rod 502 is connected to the wedge block 501, the moving rod 502 is fixedly connected to the protective nut 4, the moving rod 502 is inserted into the protective nut 4, and a first spring 503 is sleeved on the moving rod 502, the two ends of the first spring 503 are respectively connected to the wedge block 501, The mounting slot 9 provides a fixed connection. When the protective nut 4 is engaged with the hexagonal screw head 3, it applies pressure to the wedge block 501. The wedge block 501 moves, compressing the first spring 503 and moving the moving rod 502. When the wedge block 501 aligns with the engaging slot 8, the elastic restoring force of the first spring 503 engages the wedge block 501 with the engaging slot 8, thus fixing the protective nut 4 to the hexagonal screw head 3. Moving the moving rod 502 and the wedge block 501 allows the screw sleeve to be removed, facilitating flexible disassembly and installation of the protective nut 4.

[0025] like Figure 2 and Figure 3 As shown, the protective nut 4 is provided with a sliding hole 10. The buffer assembly 6 includes a sliding rod 601, which is fixedly installed inside the sliding hole 10. A slider 602 is inserted into the sliding rod 601 and is slidably engaged inside the sliding hole 10. A buffer plate 603 is connected between the sliders 602. A second spring 604 is sleeved on the sliding rod 601. The two ends of the second spring 604 are fixedly connected to the slider 602 and the sliding hole 10, respectively. When the buffer plate 603 is subjected to an impact force, the buffer plate 603 drives the slider 602 to move, and the second spring 604 is compressed, thereby reducing a certain impact force and protecting the protective nut 4 and the hexagonal screw head 3.

[0026] In use, the screw 1 is connected to a suitable position, and the screw sleeve is engaged with the hexagonal screw head 3. This applies pressure to the wedge block 501, causing it to move. The first spring 503 is compressed, and the moving rod 502 moves. When the wedge block 501 aligns with the engaging groove 8, the elastic restoring force of the first spring 503 engages the wedge block 501 with the engaging groove 8, thus fixing the protective nut 4 to the hexagonal screw head 3. When the hexagonal screw head 3 is impacted, the buffer plate 603 is also impacted. The buffer plate 603 moves the slider 602, and the second spring 604 is compressed, thereby reducing the impact force and protecting the protective nut 4 and the hexagonal screw head 3.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A high-strength automotive chassis screw, comprising a screw rod (1), wherein a hexagonal screw head (3) is provided on the screw rod (1), and a nut (2) is connected to the screw rod (1), characterized in that: A protective nut (4) is snapped onto the hexagonal screw head (3). A snapping assembly (5) for fixing the hexagonal screw head (3) is provided on the protective nut (4). A buffer assembly (6) is connected to the nut (2). A water-blocking ring (11) is provided on the lower surface of the protective nut (4).

2. The high-strength automotive chassis bolt according to claim 1, characterized in that: The protective nut (4) is provided with a connecting groove (7), the hexagonal screw head (3) is provided with a snap-fit ​​groove (8), and the connecting groove (7) is provided with an installation groove (9).

3. The high-strength automotive chassis bolt according to claim 2, characterized in that: The snap-fit ​​assembly (5) includes a wedge block (501), which is slidably snapped into the mounting groove (9) and snapped into the snap-fit ​​groove (8). A moving rod (502) is connected to the wedge block (501), which is fixedly connected to the protective nut (4) and inserted into the protective nut (4).

4. The high-strength automotive chassis bolt according to claim 3, characterized in that: A first spring (503) is sleeved on the moving rod (502), and the two ends of the first spring (503) are fixedly connected to the wedge block (501) and the mounting groove (9) respectively.

5. The high-strength automotive chassis bolt according to claim 1, characterized in that: The protective nut (4) is provided with a sliding hole (10).

6. The high-strength automotive chassis bolt according to claim 5, characterized in that: The buffer assembly (6) includes a slide rod (601), which is fixedly installed inside the slide hole (10). A slider (602) is inserted into the slide rod (601), and the slider (602) is slidably engaged inside the slide hole (10).

7. The high-strength automotive chassis bolt according to claim 6, characterized in that: A buffer plate (603) is connected between the sliders (602).

8. The high-strength automotive chassis bolt according to claim 6, characterized in that: A second spring (604) is sleeved on the slide rod (601), and the two ends of the second spring (604) are fixedly connected to the slider (602) and the slide hole (10) respectively.

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