CN217355149U

CN217355149U - Reinforced anti-fracture screw for diesel engine shock absorber

Info

Publication number: CN217355149U
Application number: CN202123289388.6U
Authority: CN
Inventors: 何崇城; 邹忠良; 王国祥; 贺建光; 李明勇
Original assignee: Zhongshan Taiming Hardware Co ltd
Current assignee: Zhongshan Taiming Hardware Co ltd
Priority date: 2021-12-25
Filing date: 2021-12-25
Publication date: 2022-09-02
Anticipated expiration: 2031-12-25

Abstract

The utility model discloses a reinforced anti-fracture screw used on a diesel engine shock absorber, which comprises a head and a screw rod, and is characterized in that the head and the screw rod are combined into a screw body in an integrated forming way; the joint of the head part and the screw is designed in an inverted cone shape; the upper surface of the head is formed with a sun vein, and specifically, a plurality of concentric circular grooves are formed at equal intervals; the lower surface is a smooth surface; and the screw rod is provided with an external thread. Compared with the existing screw, the depth of the sun veins of the utility model is 0.1 mm-0.2 mm, because the deeper the sun veins, the larger the stress is when the head is formed, and meanwhile, the larger the stress is at the joint, the torsion at the joint is reduced under the condition, and the fracture is easy to occur; additionally, the utility model discloses increased the thickness of head, such design can let the R angle of junction under the head change into the C angle to the tensile strength of reinforcing product further is showing the pine that reduces the spiral shell probably and take off, the cracked condition.

Description

Reinforced anti-fracture screw for diesel engine shock absorber

Technical Field

The utility model relates to a technical field of bumper shock absorber retaining member especially relates to a strengthen screw of preventing splitting for on diesel engine shock absorber.

Background

The bumper shock absorber is a commonly used damping device, is mostly seen in diesel engine and air compressor machine, because its particularity in the work, so be used for the fixed retaining member of installation, fastener lamp need possess excellent design and performance, avoid receiving vibrations or influence such as external force to take place to loosen and break even, this is inestimable to the problem that the device in the work probably produced, so need develop a enhancement, prevent cracked screw to satisfy user demand and purpose.

Disclosure of Invention

In order to realize the purpose, the utility model adopts the following technical scheme:

a reinforced anti-fracture screw for a diesel engine shock absorber comprises a head and a screw rod, and is characterized in that the head and the screw rod are combined into a screw body in an integrally forming manner; the joint of the head part and the screw is designed in an inverted cone shape; the upper surface of the head is formed with a sun vein, and specifically, a plurality of concentric circular grooves are formed at equal intervals; the lower surface is a smooth surface; and the screw rod is formed with external thread.

Preferably, the plurality of concentric grooves on the upper surface of the head portion have depth dimensions in the range of 0.1mm to 0.2mm, and are spaced apart from each other by 1.0 mm.

Preferably, the head has a diameter size in the range of 13.5mm to 14.5 mm.

Preferably, the sun print concentric circular grooves on the head are a minimum of eight.

Preferably, the thickness of the height of the concentric circular groove-containing protrusion of the head part ranges from 2.4mm to 2.6 mm.

Preferably, the connecting part is designed to be inverted cone-shaped, the length of the connecting part ranges from 0.8mm to 1.25m, and the connecting part is not provided with external threads.

Preferably, the length of the screw rod plus the length of the connecting part is between 17.8mm and 18.2 mm.

Preferably, the specification of the external thread on the screw is M8X 1.25-6 h.

Preferably, the hardness of the screw body is HRC 22-32 at least, and the torque requirement is 33 N.M at least.

The beneficial effects of the utility model are that:

1. compared with the existing screw used on the shock absorber, the sun veins are changed from 0.4mm to 0.5mm to 0.1mm to 0.2mm, because the deeper the depth of the sun veins is, the larger the stress is when the head is formed, and meanwhile, the larger the stress is at the joint, the torsion of the joint is reduced under the condition, and the fracture is easy to occur if external force action or vibration is added;

2. compared with the existing shock absorber screw, the utility model increases the thickness of the head from 1.85 mm-2.15 mm to 2.4 mm-2.6 mm, and the R angle of the joint under the head can be changed from the R angle to the C angle so as to enhance the tensile strength of the product and further remarkably reduce the loosening and breaking of the screw in the use process;

3. the utility model discloses a change and the adjustment to sun line, head thickness and R angle reach the research and development purpose, also can be used for the air compressor machine on, not only effectively increased the tensile slight, still reduce the pine that appears comparatively easily in the use and take off or the fracture, prolonged life greatly.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of the present invention.

Detailed Description

In order to make the technical means, the creation features, the achievement objectives and the functions of the present invention easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 and 2, the reinforced fracture-preventing screw for a diesel engine shock absorber in the present embodiment adopts the following technical scheme, including a head and a screw rod, and is characterized in that the head and the screw rod are combined into a screw body in an integrally forming manner; the joint of the head part and the screw is designed in an inverted cone shape; the upper surface of the head is formed with a sun vein, and specifically, a plurality of concentric circular grooves are formed at equal intervals; the lower surface is a smooth surface; and the screw rod is formed with external thread.

Wherein, the depth of the concentric circular grooves on the upper surface of the head is 0.1 mm-0.2 mm, and the distance between the concentric circular grooves is 1.0 mm.

Wherein the head has a diameter size in the range of 13.5mm to 14.5 mm.

Wherein the concentric circular grooves of the sun veins on the head are eight in minimum.

Wherein, the thickness size range of the height of the head part with the concentric circular groove is between 2.4mm and 2.6 mm.

Wherein, the connecting part is designed in an inverted cone shape, the length range of the connecting part is between 0.8mm and 1.25m, and the connecting part is not provided with external thread.

Wherein, the length of the screw rod plus the length of the connecting part is required to be between 17.8mm and 18.2 mm.

Wherein the specification of the external thread on the screw is M8 multiplied by 1.25-6 h.

Wherein the hardness of the screw body is at least HRC 22-32, and the torque requirement is at least 33 N.M.

The present embodiment takes the above scheme as an example.

Compared with the existing screw used on the shock absorber, the sun veins are changed from 0.4mm to 0.5mm to 0.1mm to 0.2mm, because the deeper the depth of the sun veins is, the larger the stress is when the head is formed, and meanwhile, the larger the stress is at the joint, the torsion of the joint is reduced under the condition, and the fracture is easy to occur if external force action or vibration is added; additionally, the utility model discloses the current bumper shock absorber screw of contrast has increased the thickness of head, increases between 2.4mm ~ 2.6mm by original 1.85mm ~ 2.15mm, and such design can also change the R angle of junction under the head, changes the C angle by the R angle to strengthen the tensile strength of product, further showing the pine that reduces the screw and appear in the use and taking off, the cracked condition.

The utility model discloses a change and the adjustment to sun line, head thickness and R angle reach the research and development purpose, also can be used for the air compressor machine on, not only effectively increased the tensile slight, still reduce the pine that appears comparatively easily in the use and take off or the fracture, prolonged life greatly.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A reinforced anti-fracture screw for a diesel engine shock absorber comprises a head (1) and a screw (2), and is characterized in that the head (1) and the screw (2) are combined into a screw body in an integrally forming manner; the joint (3) of the head (1) and the screw (2) is designed to be inverted cone-shaped; the upper surface of the head part (1) is formed with a sun vein, and specifically, a plurality of concentric circular grooves are formed at equal intervals; the lower surface is a smooth surface; and an external thread is formed on the screw rod (2).

2. A reinforced anti-fracture screw for diesel engine shock absorber according to claim 1, characterized in that said plurality of concentric grooves on the upper surface of said head (1) have depth dimensions ranging from 0.1mm to 0.2mm and are spaced from each other by 1.0 mm.

3. A reinforcing anti-fracture screw for diesel engine shock absorbers according to claim 1, characterized in that said head (1) has a diametric dimension ranging between 13.5mm and 14.5 mm.

4. A reinforcing anti-fracture screw for diesel engine shock absorber according to claim 1, characterized in that there are a minimum of eight concentric grooves of the sun pattern on the head (1).

5. A reinforcing anti-fracture screw for diesel engine shock absorber according to claim 1, wherein the thickness dimension of the height of the head (1) including the concentric groove protrusion is in the range of 2.4mm to 2.6 mm.

6. A reinforcing anti-fracture screw for diesel engine shock absorber according to claim 1, characterized in that said connection (3) is of inverted cone design, its length ranges between 0.8mm and 1.25m, and it is not formed with external thread.

7. A reinforcing anti-fracture screw for a diesel engine shock absorber according to claim 1, characterized in that the length of the screw rod (2) plus the length of the joint (3) is between 17.8mm and 18.2 mm.

8. The reinforcing anti-fracture screw for the diesel engine shock absorber as claimed in claim 1, wherein the specification of the external thread on the screw rod (2) is M8 x 1.25-6 h.

9. The reinforced fracture-prevention screw for the diesel engine shock absorber as claimed in claim 1, wherein the hardness of the screw body is at least HRC 22-32, and the torque requirement is at least 33 N.M.