Self-tapping screw for additional water pump

Abstract

The utility model relates to the technical field of connecting pieces, and discloses a self-tapping screw for an additional water pump, which comprises a screw cap, the bottom of the screw cap is fixedly connected with a connecting part, the top of the connecting part is fixedly connected with a screw body, the periphery of the screw body is fixedly connected with threads, the top of the screw cap is provided with a cross-shaped groove, and the cross-shaped groove is fixedly connected with the screw body. A linear groove is formed in the top of the nail cap, and a rhombic groove is formed in the top of the nail cap. The linear groove is formed in the upper portion of the cross-shaped groove, and the rhombic groove is formed in the upper portion of the linear groove. The outer diameter of the nail cap ranges from 7.5 mm to 0.2 mm, the thickness of the nail cap ranges from 2.75 mm to 0.2 mm, and the diameter of the cross groove is 3.4 mm. And the thickness of the connecting part is 1.6 mm. And the diameter of the screw body is 2.3 + 0.2 / 0mm. When the self-tapping screw is mounted, the cross-shaped groove, the linear groove and the rhombic groove 7 are respectively formed in the upper part of the screw cap 1, so that the self-tapping screw can be suitable for screwdrivers with different specifications, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a self-tapping screw for an additional water pump. Background Art

[0002] The additional water pump is a key component on an automobile engine. Since the additional water pump passes through a fluid medium, it has high requirements for sealing performance. Therefore, the connection reliability of the additional water pump is crucial. The self-tapping screw for connecting the additional water pump should be easy to install and have reliable connection. Through special thread design and manufacturing process, reliable mechanical performance requirements are achieved to ensure firm connection and prevent loosening during vehicle driving, so as to ensure the normal, stable and reliable operation of the additional water pump.

[0003] In the prior art, most of the screw caps of the self-tapping screws for water pumps are only provided with one type of screw slot, and only a single type of screwdriver can be used for tightening and installation, so the practicability is poor. Summary of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a self-tapping screw for an additional water pump, aiming to improve the problem of poor practicability caused by the fact that most of the screw caps of the self-tapping screws for water pumps in the prior art are only provided with one type of screw slot.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a self-tapping screw for an additional water pump, including a screw cap, the bottom of the screw cap is fixedly connected with a connecting part, the top of the connecting part is fixedly connected with a screw body, the outer circumference of the screw body is fixedly connected with a thread, the top of the screw cap is provided with a cross slot, the top of the screw cap is provided with a flat slot, and the top of the screw cap is provided with a diamond slot.

[0006] As a further description of the above technical scheme:

[0007] The flat slot is arranged above the cross slot, and the diamond slot is arranged above the flat slot.

[0008] As a further description of the above technical scheme:

[0009] The outer diameter of the screw cap is 7.5 - 0.2 / 0 mm, and the thickness of the screw cap is 2.75 - 0.2 / 0 mm.

[0010] As a further description of the above technical scheme:

[0011] The diameter of the cross slot is 3.4 mm.

[0012] As a further description of the above technical scheme:

[0013] The thickness of the connecting part is 1.6 mm.

[0014] As a further description of the above technical solution:

[0015] The diameter of the nail body is 2.3 + 0.2 / 0 mm.

[0016] As a further description of the above technical solution:

[0017] The diameter of the thread is 3.3 + 0.2 / 0 mm.

[0018] As a further description of the above technical solution:

[0019] The pitch of the thread is 1.6 ± 0.05 mm, and the angle between the thread and the nail body is 30 ± 2°.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, when installing the self-tapping screw, since cross slots, flat slots, and diamond slots are respectively arranged on the upper part of the nail cap, the self-tapping screw can be applicable to screwdrivers of different specifications, improving the practicability of the device.

[0022] 2. In the utility model, the self-tapping screw is composed of a nail cap, a connecting part, a nail body, and a thread. Through special thread design and manufacturing process, the self-tapping screw meets reliable mechanical performance requirements, ensuring firm connection and preventing loosening during vehicle driving, and ensuring the normal, stable, and reliable operation of the additional water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of a self-tapping screw for an additional water pump proposed by the utility model;

[0024] Figure 2 is a schematic view of the nail cap of a self-tapping screw for an additional water pump proposed by the utility model.

[0025] LEGEND DESCRIPTION:

[0026] 1. Nail cap; 2. Connecting part; 3. Nail body; 4. Thread; 5. Cross slot; 6. Flat slot; 7. Diamond slot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the utility model with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without creative efforts shall fall within the protection scope of the utility model.

[0028] Refer to Figure 1 - Figure 2, an embodiment provided by the present utility model: a self-tapping screw for an additional water pump, including a nail head 1 which functions to install the overall structure. The bottom of the nail head 1 is fixedly connected to a connecting part 2 which functions to connect the upper and lower structures. The top of the connecting part 2 is fixedly connected to a nail body 3 which functions to connect and fix. The outer periphery of the nail body 3 is fixedly connected with a thread 4 which functions for threaded connection. A cross slot 5 is opened at the top of the nail head 1 which functions to fit a cross-shaped screwdriver. A flat slot 6 is opened at the top of the nail head 1 which functions to fit a flat-shaped screwdriver. A diamond slot 7 is opened at the top of the nail head 1 which functions to fit a diamond-shaped screwdriver.

[0029] Refer to Figure 1 - Figure 2 , the flat slot 6 is arranged above the cross slot 5, and the diamond slot 7 is arranged above the flat slot 6. The outer diameter of the nail head 1 is 7.5 - 0.2 / 0 mm, the thickness of the nail head 1 is 2.75 - 0.2 / 0 mm, the diameter of the cross slot 5 is 3.4 mm, the thickness of the connecting part 2 is 1.6 mm, the diameter of the nail body 3 is 2.3 + 0.2 / 0 mm, the diameter of the thread 4 is 3.3 + 0.2 / 0 mm, the pitch of the thread 4 is 1.6 ± 0.05 mm, and the included angle between the thread 4 and the nail body 3 is 30 ± 2°.

[0030] Working principle: When installing the self-tapping screw, since the cross slot 5, the flat slot 6, and the diamond slot 7 are respectively arranged on the upper part of the nail head 1, the self-tapping screw can be applicable to screwdrivers of different specifications.

[0031] The composition of the nail head 1, the connecting part 2, the nail body 3, and the thread 4 enables the self-tapping screw to meet reliable mechanical property requirements through special thread design and manufacturing processes.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A self-tapping screw for an additional water pump, comprising a screw cap (1), characterized in that: The bottom of the nail cap (1) is fixedly connected to a connecting portion (2), the top of the connecting portion (2) is fixedly connected to a nail body (3), the outer periphery of the nail body (3) is fixedly connected to a thread (4), the top of the nail cap (1) is provided with a cross groove (5), the top of the nail cap (1) is provided with a straight groove (6), and the top of the nail cap (1) is provided with a rhombus groove (7).

2. The self-tapping screw for an additional water pump according to claim 1, characterized in that: The straight groove (6) is arranged on the upper part of the cross groove (5), and the diamond groove (7) is arranged on the upper part of the straight groove (6).

3. The self-tapping screw for an additional water pump according to claim 1, characterized in that: The outer diameter of the nail cap (1) is 7.5-0.2 / 0 mm, and the thickness of the nail cap (1) is 2.75-0.2 / 0 mm.

4. The self-tapping screw for an additional water pump according to claim 1, characterized in that: The diameter of the cross groove (5) is 3.4 mm.

5. The self-tapping screw for an additional water pump according to claim 1, characterized in that: The thickness of the connecting portion (2) is 1.6 mm.

6. The self-tapping screw for an additional water pump according to claim 1, characterized in that: The diameter of the nail body (3) is 2.3+0.2 / 0 mm.

7. The self-tapping screw for an additional water pump according to claim 1, characterized in that: The diameter of the thread (4) is 3.3+0.2 / 0 mm.

8. The self-tapping screw for an additional water pump according to claim 1, characterized in that: The pitch of the thread (4) is 1.6±0.05 mm, and the angle between the thread (4) and the nail body (3) is 30±2°.

Images