Alloy fastening screw for automotive trim

Abstract

The utility model provides an alloy fastening screw for automotive trim, which relates to the field of fastening screws for automotive trim, and comprises a head component, a screw rod component, an umbrella-shaped head, a cross-shaped groove, a planar notch and a round hole, the cross-shaped groove and the planar notch are used for being matched with different mounting tools, the round hole is formed in the bottom of the umbrella-shaped head, and the screw rod component comprises a screw rod and a thread positioned at the lower end of the screw rod. The screw rod assembly adopts an aluminum alloy matrix, and the surface of the screw rod assembly is compounded with a chromium plating layer and a nickel plating layer; the aluminum alloy base body is adopted in the screw rod assembly, the chromium plating layer and the nickel plating layer are composited on the surface of the aluminum alloy base body, the chromium plating layer and the nickel plating layer have good corrosion resistance, the screw can be prevented from rusting and corrosion in the environment of automotive trim, the service life of the screw is prolonged, and the gasket assembly comprises the anti-skid pad, the rubber pad, the installation groove, the rod sleeve and the anti-skid lines. The contact area of the screw and the installation face is increased, the friction force is improved through the anti-skid lines, the screw can be prevented from loosening through the combined action, and the stability of the screw after installation is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of fastening screws for automotive interiors, specifically an alloy fastening screw for automotive interiors. Background Technology

[0002] Fastening screws are a type of connection tool widely used in mechanical manufacturing, construction, electronics and other fields. Their core function is to firmly connect two or more parts together through threaded design. In automobile manufacturing, interior trim, as a core component of the vehicle's interior space, combines decoration, functionality and safety. Interior parts such as dashboards, multimedia controls, door panels and headliners all need to be fixed by fastening screws.

[0003] Car interior parts are usually fixed to a metal frame with screws. However, during long-term use of the vehicle, vibrations can cause continuous friction between the screws and the interior parts, resulting in a gradual increase in the gap. This can not only cause abnormal noises but also loosen the screws, affecting the stability of the interior parts.

[0004] In summary, this utility model provides an alloy fastening screw for automotive interiors to solve the above-mentioned problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] An alloy fastening screw for automotive interior use includes a head assembly comprising an umbrella-shaped head, a cross-shaped groove and a flat notch for adapting to different installation tools, and a circular hole at the bottom of the umbrella-shaped head; a screw assembly comprising a lead screw, a thread at the lower end of the lead screw, and a lubricating coating on the surface of the thread; the screw assembly is made of an aluminum alloy base with a chrome-plated layer and a nickel-plated layer on the surface; and a washer assembly comprising an anti-slip pad for increasing the contact area, a rubber pad for cushioning the contact pressure between the head assembly and the anti-slip pad, a mounting groove and a sleeve for mounting the rubber pad, and anti-slip texture for improving friction; the washer assembly is fitted onto the upper end of the surface of the lead screw.

[0007] Furthermore, in this invention, the cross-shaped groove is formed at the top of the umbrella-shaped head, and the planar notch is formed around the surface of the umbrella-shaped head.

[0008] Furthermore, in this invention, the thread is formed at the lower end of the lead screw surface, and the lubricating coating is a disulfide-based coating sprayed onto the surface of the thread.

[0009] Furthermore, in this utility model, the mounting groove is formed on the top of the anti-slip pad, one end of the rod sleeve is fixedly connected to the inner wall of the mounting groove, and the other end of the rod sleeve extends into the inner cavity of the round hole and is movably connected to the inner cavity of the round hole.

[0010] Furthermore, in this utility model, the rubber pad is fixed to the inner cavity of the mounting groove, and both the rubber pad and the anti-slip pad have anti-slip textures on their surfaces.

[0011] Furthermore, in this invention, one end of the lead screw passes through the rod sleeve and extends into the inner cavity of the circular hole, and is fixedly connected to the inner wall of the circular hole.

[0012] Furthermore, in this invention, the thickness of the composite chromium plating layer is 5-8 μm, and the thickness of the nickel plating layer is 3-5 μm.

[0013] Beneficial effects: This utility model has the following beneficial effects:

[0014] This invention utilizes an aluminum alloy substrate for the screw assembly, with a composite chromium and nickel plating layer on the surface. The chromium and nickel plating layers offer excellent corrosion resistance, preventing the screw from rusting and corroding in the automotive interior environment, thus further extending the screw's lifespan. The gasket assembly includes an anti-slip pad, a rubber pad, a mounting groove, a sleeve, and anti-slip textures. The anti-slip pad increases the contact area between the screw and the mounting surface, while the anti-slip textures enhance friction. Together, they prevent the screw from loosening and ensure stability after installation. The rubber pad buffers the contact pressure between the flat notch and the anti-slip pad, preventing damage to the mounting surface due to excessive pressure. It also absorbs some vibration, improving the safety of screw use. The threaded surface of the screw assembly is coated with a disulfide-based lubricating coating. This not only reduces friction during screw insertion, making installation easier and less strenuous, but also reduces thread wear during use, extending the screw's lifespan. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the head assembly and screw assembly in their separated state according to this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of this utility model from a low angle.

[0018] Figure 4 This is a schematic diagram of the screw assembly and gasket assembly in their separated state according to this utility model;

[0019] Figure 5 This is a schematic diagram of the assembly structure of the fastening screw and the automotive interior dashboard of this utility model.

[0020] In the picture:

[0021] 100. Head assembly; 110. Umbrella head; 120. Cross groove; 130. Flat notch; 140. Round hole; 200. Screw assembly; 210. Lead screw; 220. Thread; 230. Lubricating coating; 300. Gasket assembly; 310. Anti-slip pad; 320. Rubber pad; 330. Mounting groove; 340. Rod sleeve; 350. Anti-slip texture. Detailed Implementation

[0022] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0023] Example 1

[0024] like Figure 1-5 The first embodiment of this utility model is shown, which provides an alloy fastening screw for automotive interiors, including a head assembly 100, including an umbrella-shaped head 110, a cross groove 120 and a flat notch 130 for adapting to different installation tools, and a round hole 140 opened at the bottom of the umbrella-shaped head 110; a screw assembly 200, including a lead screw 210, a thread 220 located at the lower end of the lead screw 210, and a lubricating coating 230 located on the surface of the thread 220; the screw assembly 200 is made of an aluminum alloy substrate with a composite chromium plating layer and a nickel plating layer on the surface; and a gasket assembly 300, including an anti-slip pad 310 for increasing the contact area, a rubber pad 320 for buffering the contact pressure between the head assembly 100 and the anti-slip pad 310, a mounting groove 330 and a sleeve 340 for mounting the rubber pad 320, and an anti-slip texture 350 for improving friction; and the gasket assembly 300 is sleeved on the upper end of the surface of the lead screw 210.

[0025] like Figure 1-5As shown, the Phillips head recess 120 and flat notch 130 in the head assembly 100 are adaptable to different installation tools, ensuring that the screws can be tightened accurately and securely during installation. The Phillips head recess 120 is adapted to a Phillips head screwdriver, and the flat notch 130 is adapted to a wrench. The screw assembly 200 uses an aluminum alloy base with a composite chrome plating layer and a nickel plating layer on the surface. Aluminum alloy is lightweight and has high strength. The chrome plating layer and nickel plating layer not only improve the corrosion resistance of the screw and prevent the screw from being damaged by rust during long-term use, but also enhance the hardness and wear resistance of the screw. This allows the screw to better resist friction and wear when in contact with the metal frame and interior parts, reducing dimensional changes caused by friction and thus reducing the possibility of increased clearance. The lubricating coating 230 on the surface of the thread 220 is a disulfide-based spray coating. The lubricating coating 230 can reduce the resistance when screwing in, making installation easier. On the one hand, during long-term vehicle use, the anti-slip pad 310 can continuously lubricate, reduce the friction between the screws and interior trim parts and the metal frame, reduce frictional losses caused by vibration, and thus slow down the rate of gap increase. The anti-slip pad 310 can increase the contact area between the screws and interior trim parts, disperse pressure, and reduce wear caused by excessive local pressure. The anti-slip texture 350 on the surfaces of both the anti-slip pad 310 and the rubber pad 320 can improve friction, further prevent the screws from rotating or shifting during vibration, and effectively prevent the screws from loosening. The rubber pad 320 is installed in the mounting groove 330, and its function is to buffer the contact pressure between the head assembly 100 and the anti-slip pad 310. When the vehicle vibrates during driving, the rubber pad 320 can absorb some vibration energy, reduce the hard collision and friction between the screws and interior trim parts, and reduce the loosening of screws and abnormal noise caused by vibration.

[0026] Example 2

[0027] Reference Figure 1-4 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0028] In this embodiment, a cross groove 120 is formed on the top of the umbrella-shaped head 110, and a planar notch 130 is formed around the surface of the umbrella-shaped head 110.

[0029] The thread 220 is formed at the lower end of the surface of the lead screw 210, and the lubricating coating 230 is a disulfide-based coating sprayed onto the surface of the thread 220.

[0030] The mounting groove 330 is formed on the top of the anti-slip pad 310. One end of the rod sleeve 340 is fixedly connected to the inner wall of the mounting groove 330, and the other end of the rod sleeve 340 extends into the inner cavity of the round hole 140 and is movably connected to the inner cavity of the round hole 140.

[0031] The rubber pad 320 is fixed in the inner cavity of the mounting groove 330, and anti-slip textures 350 are formed on the surface of both the rubber pad 320 and the anti-slip pad 310.

[0032] One end of the lead screw 210 passes through the sleeve 340 and extends into the inner cavity of the round hole 140, and is fixedly connected to the inner wall of the round hole 140.

[0033] The thickness of the composite chromium plating layer is 5-8 μm, and the thickness of the nickel plating layer is 3-5 μm.

[0034] like Figure 1-4 As shown, a cross-shaped groove 120 is formed on the top of the umbrella-shaped head 110, and a flat notch 130 is formed around the surface of the umbrella-shaped head 110. When installing screws, the appropriate tool can be selected based on the available tools. If a Phillips screwdriver is used, it can be inserted into the cross-shaped groove 120 for tightening. If a tool with a flat clamp is used, the screw can be rotated by clamping the flat notch 130. The screw assembly 200 has a thread 220 at the lower end of the lead screw 210. During installation, the head assembly 100 rotates, and the lead screw 210 rotates accordingly. The thread 220 engages with the threaded hole of the automotive interior mounting part to screw in the screw. The surface of the thread 220 is coated with a disulfide-based lubricating coating 230, which reduces the friction between the thread 220 and the threaded hole, making the screw screw in smoother and reducing wear on the thread 220, thus extending the screw's service life. The screw assembly 200 is made of aluminum alloy. The substrate has a composite chromium plating layer and a nickel plating layer on its surface. The thickness of the composite chromium plating layer is 5-8μm, and the thickness of the nickel plating layer is 3-5μm. The composite plating layer not only improves the corrosion resistance of the screw assembly 200 and prevents the screw from rusting and being damaged in the automotive interior environment, but also enhances its surface hardness, ensuring that the screw is not easily deformed during screwing and tightening. The washer assembly 300 is sleeved on the upper end of the surface of the lead screw 210. When the screw is screwed in to a certain extent, the bottom of the umbrella-shaped head 110 contacts the washer assembly 300. The rubber pad 320 acts as a buffer, which can reduce the contact pressure between the head assembly 100 and the anti-slip pad 310, and avoid damage to the automotive interior surface due to excessive pressure. The surfaces of the anti-slip pad 310 and the rubber pad 320 are both provided with anti-slip textures 350, which increases the friction between the washer assembly 300 and the automotive interior surface and the bottom of the umbrella-shaped head 110, preventing the screw from loosening due to vibration or other reasons during use, and ensuring the stability of the screw tightening.

[0035] In use, the cross groove 120 is formed on the top of the umbrella-shaped head 110, and the flat notch 130 is formed around the surface of the umbrella-shaped head 110. When installing screws, the appropriate tool can be selected based on the available installation tools. When rotational force is applied through the head assembly 100, the lead screw 210 rotates accordingly. The thread 220 at the lower end of the lead screw 210 engages with the threaded hole of the component being installed. Through the helical transmission principle of the thread 220, the screw is gradually screwed into the component being installed, achieving a fastening effect. During the screw screwing process, the lubricating coating 230 reduces the friction between the thread 220 and the threaded hole of the component being installed, making the screw screwing in smoother, reducing resistance during installation, and also reducing wear on the thread 220, extending the screw life. To extend the lifespan of the screw, the gasket assembly 300 is fitted onto the upper end of the screw rod 210. The anti-slip pad 310 increases the contact area with the surface of the component being installed. Both the anti-slip pad 310 and the rubber pad 320 have anti-slip textures 350 on their surfaces. These textures improve friction and prevent the screw from loosening due to vibration during use, thus enhancing the screw's tightening effect. The mounting groove 330 is located on top of the anti-slip pad 310, and the rubber pad 320 is fixed within the inner cavity of the mounting groove 330. When the screw is tightened, the rubber pad 320 can buffer the contact pressure between the flat notch 130 and the anti-slip pad 310, preventing damage to the surface of the component being installed due to excessive pressure. It also further enhances the anti-slip performance of the gasket assembly 300.

[0036] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0037] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. An alloy fastening screw for automotive interior, characterized by: include, The head assembly (100) includes an umbrella-shaped head (110), a cross-shaped groove (120) for adapting to different installation tools, a flat notch (130), and a circular hole (140) opened at the bottom of the umbrella-shaped head (110). The screw assembly (200) includes a lead screw (210), a thread (220) located at the lower end of the lead screw (210), and a lubricating coating (230) on the surface of the thread (220). The screw assembly (200) is made of an aluminum alloy substrate with a composite chromium plating layer and a nickel plating layer on the surface. The gasket assembly (300) includes an anti-slip pad (310) for increasing the contact area, a rubber pad (320) for cushioning the contact pressure between the head assembly (100) and the anti-slip pad (310), a mounting groove (330) for mounting the rubber pad (320) and a rod sleeve (340), and an anti-slip texture (350) for improving friction, and the gasket assembly (300) is fitted onto the upper end of the surface of the lead screw (210).

2. The alloy fastening screw for automotive interior according to claim 1, wherein: The cross groove (120) is formed on the top of the umbrella-shaped head (110), and the planar notch (130) is formed around the surface of the umbrella-shaped head (110).

3. The alloy fastening screw for automotive interior according to claim 1, wherein: The thread (220) is formed at the lower end of the surface of the lead screw (210), and the lubricating coating (230) is a disulfide-based coating sprayed onto the surface of the thread (220).

4. The alloy fastening screw for automotive interior according to claim 1, wherein: The mounting groove (330) is opened on the top of the anti-slip pad (310). One end of the rod sleeve (340) is fixedly connected to the inner wall of the mounting groove (330), and the other end of the rod sleeve (340) extends into the inner cavity of the round hole (140) and is movably connected to the inner cavity of the round hole (140).

5. The alloy fastening screw for automotive interior according to claim 1, wherein: The rubber pad (320) is fixed in the inner cavity of the mounting groove (330), and anti-slip textures (350) are provided on the surfaces of both the rubber pad (320) and the anti-slip pad (310).

6. The alloy fastening screw for automotive interior according to claim 1, wherein: One end of the lead screw (210) passes through the rod sleeve (340) and extends into the inner cavity of the round hole (140), and is fixedly connected to the inner wall of the round hole (140).

7. The alloy fastening screw for automotive interior according to claim 1, wherein: The thickness of the composite chromium plating layer is 5-8 μm, and the thickness of the nickel plating layer is 3-5 μm.

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