阅读说明：本技术 一种高强度汽车发动机紧固件 (High-strength automobile engine fastener ) 是由 庞坤 戴锡鹏 于 2021-08-04 设计创作，主要内容包括：本发明公开了一种高强度汽车发动机紧固件,包括第一螺杆本体,所述第一螺杆本体的顶端固定连接有第一安装头,所述第一螺杆本体的内部与第一安装头之间开设有相通的内螺纹槽,所述内螺纹槽的内部螺纹连接有第二螺杆本体,所述第二螺杆本体的顶端固定连接有第二安装头,所述第二螺杆本体的底端固定连接有第一凸头,所述第一螺杆本体的外表面开设有若干与内螺纹槽相通的限位槽,所述限位槽的内部滑动卡柱,所述第一螺杆本体的底端开设有与内螺纹槽相通的内膨胀槽,所述内膨胀槽的内部滑动连接有挤压柱,所述第一螺杆本体的下部外表面开设有若干膨胀开口,本紧固件通过三层固定,可避免紧固件松动,固定效果好。(The invention discloses a high-strength automobile engine fastener, which comprises a first screw body, wherein the top end of the first screw body is fixedly connected with a first mounting head, a communicated inner thread groove is formed between the interior of the first screw body and the first mounting head, the interior of the inner thread groove is in threaded connection with a second screw body, the top end of the second screw body is fixedly connected with a second mounting head, the bottom end of the second screw body is fixedly connected with a first raised head, the outer surface of the first screw body is provided with a plurality of limiting grooves communicated with the inner thread groove, the inner part of each limiting groove is slidably clamped by a column, the bottom end of the first screw body is provided with an inner expansion groove communicated with the inner thread groove, the inner part of each inner expansion groove is slidably connected with an extrusion column, the outer surface of the lower part of the first screw body is provided with a plurality of expansion openings, and the fastener is fixed by three layers, can avoid the fastener to become flexible, fixed effectual.)

1. The utility model provides a high strength automobile engine fastener, includes first screw body (1), its characterized in that: the screw rod comprises a first screw rod body (1), a first mounting head (7) is fixedly connected to the top end of the first screw rod body (1), a communicated inner thread groove (16) is formed between the interior of the first screw rod body (1) and the first mounting head (7), a second screw rod body (4) is in threaded connection with the interior of the inner thread groove (16), a second mounting head (8) is fixedly connected to the top end of the second screw rod body (4), a first raised head (13) is fixedly connected to the bottom end of the second screw rod body (4), a plurality of limiting grooves (12) communicated with the inner thread groove (16) are formed in the outer surface of the first screw rod body (1), a clamping column (15) slides in the limiting grooves (12), a spring (14) is sleeved on the outer surface of the clamping column (15), the inner side wall of the limiting groove (12) at one end of the spring (14) is fixedly connected, and the other end of the spring (14) is fixedly connected with one side of the outer surface of the clamping column (15), the novel screw rod is characterized in that a second raised head (2) is fixedly connected to one end of the clamping column (15), an inserting column (3) is fixedly connected to the other end of the clamping column (15), an inner expansion groove (17) communicated with an inner thread groove (16) is formed in the bottom end of the first screw rod body (1), an extrusion column (18) is connected to the inner portion of the inner expansion groove (17) in a sliding mode, and a plurality of expansion openings (19) are formed in the outer surface of the lower portion of the first screw rod body (1).

2. A high strength automotive engine fastener as defined in claim 1, wherein: the inner aperture of the inner expansion groove (17) is gradually reduced from top to bottom.

3. A high strength automotive engine fastener as defined in claim 2, wherein: the outer surface cover of first screw rod body (1) is equipped with first sealing washer (5), the outer surface cover of second screw rod body (4) is equipped with second sealing washer (11).

4. A high strength automotive engine fastener as defined in claim 3, wherein: the bottom end face of the first mounting head (7) is fixedly connected with a plurality of first anti-skid bulges (6).

5. The high strength automotive engine fastener of claim 4, wherein: the bottom end face of the second mounting head (8) is fixedly connected with a plurality of second anti-skid bulges (10).

6. A high strength automotive engine fastener as claimed in claim 5, wherein: the cross section of the first mounting head (7) in plan view is of a hexagonal structure.

7. The high strength automotive engine fastener of claim 6, wherein: and the upper end surface of the second mounting head (8) is provided with a hexagonal groove (9).

8. A high strength automotive engine fastener as claimed in claim 7, wherein: the outer surfaces of the first screw body (1) and the second screw body (4) are coated with Teflon coatings.

Technical Field

The invention relates to the technical field of automobile engine fasteners, in particular to a high-strength automobile engine fastener.

Background

An automotive engine is a machine that can convert other forms of energy into mechanical energy, including, for example, internal combustion engines, external combustion engines, electric motors, and the like. In the field of automobile engines, the engine needs to generate a power supply effect for an automobile by adding engine oil for combined action, wherein the engine oil can play roles of lubrication, wear reduction, auxiliary cooling, temperature reduction, sealing, leakage prevention, rust prevention, corrosion prevention, shock absorption, buffering and the like for the engine.

The automobile engine can vibrate during operation, certain displacement deviation can be generated between the cylinder body and the cylinder cover, so that the bolt is loosened, the firmness degree of the joint of the cylinder body and the cylinder cover is reduced, the operation of the engine is influenced, the oil and water leakage condition is generated, and the engine is even damaged.

Disclosure of Invention

The invention aims to provide a high-strength automobile engine fastener to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a high-strength automobile engine fastener comprises a first screw body, wherein a first mounting head is fixedly connected to the top end of the first screw body, a communicated inner thread groove is formed between the interior of the first screw body and the first mounting head, a second screw body is in threaded connection with the interior of the inner thread groove, a second mounting head is fixedly connected to the top end of the second screw body, a first raised head is fixedly connected to the bottom end of the second screw body, a plurality of limiting grooves communicated with the inner thread groove are formed in the outer surface of the first screw body, a clamping column slides in the limiting grooves, a spring is sleeved on the outer surface of the clamping column, the inner side wall of the limiting groove at one end of the spring is fixedly connected, the other end of the spring is fixedly connected with one side of the outer surface of the clamping column, a second raised head is fixedly connected to one end of the clamping column, and an inserting column is fixedly connected to the other end of the clamping column, the bottom end of the first screw body is provided with an inner expansion groove communicated with the inner thread groove, the inner part of the inner expansion groove is connected with an extrusion column in a sliding mode, and the outer surface of the lower part of the first screw body is provided with a plurality of expansion openings.

Preferably, the inner aperture of the inner expansion groove is gradually reduced from top to bottom.

Preferably, the outer surface cover of first screw rod body is equipped with first sealing washer, the outer surface cover of second screw rod body is equipped with the second sealing washer.

Preferably, the bottom end face of the first mounting head is fixedly connected with a plurality of first anti-skid protrusions.

Preferably, a plurality of second anti-skid protrusions are fixedly connected to the bottom end face of the second mounting head.

Preferably, the first mounting head has a hexagonal cross section in plan view.

Preferably, the upper end surface of the second mounting head is provided with a hexagonal groove.

Preferably, the outer surface of the first screw body and the outer surface of the second screw body are both coated with teflon coatings.

Compared with the prior art, the invention has the beneficial effects that: the fastener is convenient to use, when in use, the first screw body is screwed into the inner aperture of the connecting piece to achieve a layer of fixing effect, then the second screw body is screwed into the inner thread groove, the first raised head is abutted against the second lug and moves towards the inner side of the limiting groove in the screwing process of the second screw body, the spring is compressed, the inserting column is contacted with the inner aperture of the connecting piece to limit the first screw body up and down, the fastening effect of the first screw body is improved, the second screw body is screwed downwards, the first raised head drives the extruding column to move downwards, the lower surface of the first screw body expands outwards when the extruding column moves downwards, so that the first screw body is tightly fixed in the inner aperture of the connecting piece to achieve the effect of third layer fixing, the fastener is fixed by three layers, so that the fastener can be prevented from loosening, and the fixing effect is good; the sealing effect of the fastener can be improved by matching the first sealing ring with the second sealing ring; the first anti-slip bulge can avoid the first sealing ring from slipping and loosening, so that the sealing effect of the first sealing ring can be enhanced; the second anti-skidding arch that sets up can avoid the second sealing washer to skid not hard up to can strengthen the sealed effect of second sealing washer.

Drawings

FIG. 1 is a schematic front cross-sectional view of a high strength automotive engine fastener body construction;

FIG. 2 is a schematic front view of a high strength automotive engine fastener body construction;

FIG. 3 is a top view of a first mounting head structure of a high strength automotive engine fastener.

In the figure: 1-a first screw body, 2-a second raised head, 3-an inserting column, 4-a second screw body, 5-a first sealing ring, 6-a first anti-skid projection, 7-a first mounting head, 8-a second mounting head, 9-a hexagonal groove, 10-a second anti-skid projection, 11-a second sealing ring, 12-a limiting groove, 13-a first raised head, 14-a spring, 15-a clamping column, 16-an internal thread groove, 17-an internal expansion groove, 18-an extruding column and 19-an expansion opening.

Detailed Description

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 a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: a high-strength automobile engine fastener comprises a first screw body 1, wherein a first mounting head 7 is fixedly connected to the top end of the first screw body 1, a communicated internal thread groove 16 is formed between the interior of the first screw body 1 and the first mounting head 7, a second screw body 4 is in threaded connection with the interior of the internal thread groove 16, a second mounting head 8 is fixedly connected to the top end of the second screw body 4, a first raised head 13 is fixedly connected to the bottom end of the second screw body 4, a plurality of limiting grooves 12 communicated with the internal thread groove 16 are formed in the outer surface of the first screw body 1, a clamping column 15 slides in the limiting grooves 12, a spring 14 is sleeved on the outer surface of the clamping column 15, the inner side wall of the limiting groove 12 at one end of the spring 14 is fixedly connected, and the other end of the spring 14 is fixedly connected with one side of the outer surface of the clamping column 15, one end of the clamping column 15 is fixedly connected with a second raised head 2, the other end of the clamping column 15 is fixedly connected with an inserting column 3, an inner expansion groove 17 communicated with the inner thread groove 16 is formed in the bottom end of the first screw body 1, an extrusion column 18 is connected to the inner expansion groove 17 in a sliding mode, and a plurality of expansion openings 19 are formed in the outer surface of the lower portion of the first screw body 1.

When the screw is used, the first screw body 1 is firstly screwed into the inner aperture of the connecting piece to achieve a layer of fixing effect, then the second screw body 4 is screwed into the inner thread groove 16, in the screwing process of the second screw body 4, the first raised head 13 is abutted against the second lug 13 and enables the second lug 13 to move towards the inner side of the limiting groove 12, at the moment, the spring 14 is compressed, the inserting column 3 is contacted with the inner aperture of the connecting piece at the same time, so that the first screw body 1 can be limited by moving up and down, the fastening effect of the first screw body 1 is improved, the two-layer fixing effect is achieved, then the second screw body 4 is continuously screwed downwards, the first raised head 13 drives the extruding column 18 to move downwards, the lower surface of the first screw body 1 expands outwards when the extruding column 18 moves downwards, and the first screw body 1 is tightly fixed in the inner aperture of the connecting piece, therefore, the effect of fixing the third layer is achieved, the fastener is fixed through the three layers, looseness of the fastener can be avoided, and the fixing effect is good.

The inner diameter of the inner expansion groove 17 becomes smaller from top to bottom.

The outer surface cover of first screw rod body 1 is equipped with first sealing washer 5, the outer surface cover of second screw rod body 4 is equipped with second sealing washer 11.

The sealing effect of the fastener can be increased by matching the first sealing ring 5 with the second sealing ring 11.

The bottom end surface of the first mounting head 7 is fixedly connected with a plurality of first anti-skid bulges 6.

The first antiskid bulge 6 can avoid the first sealing ring 5 from slipping and loosening, thereby enhancing the sealing effect of the first sealing ring 5.

The bottom end surface of the second mounting head 8 is fixedly connected with a plurality of second anti-skid protrusions 10.

The second anti-slip bulge 10 can prevent the second sealing ring 11 from slipping and loosening, so that the sealing effect of the second sealing ring 11 can be enhanced.

The first mounting head 7 is of a hexagonal structure in plan view, and the first screw body 1 is conveniently mounted through a wrench.

The upper end surface of the second mounting head 8 is provided with a hexagonal groove 9, so that the second screw body 4 can be mounted conveniently by a screwdriver.

The outer surfaces of the first screw body 1 and the second screw body 4 are respectively coated with a Teflon coating layer for increasing the acid resistance, alkali resistance, corrosion resistance and wear resistance of the fastener.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.