CN214577435U

CN214577435U - Cylinder gasket

Info

Publication number: CN214577435U
Application number: CN202121028079.0U
Authority: CN
Inventors: 乐贤君
Original assignee: Shanghai Lechang Auto Parts Co ltd
Current assignee: Shanghai Lechang Auto Parts Co ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-11-02
Anticipated expiration: 2031-05-13

Abstract

The utility model relates to the technical field of cylinders, especially, relate to a cylinder gasket, it includes cylinder gasket body and the fixed rubber layer that sets up in cylinder gasket body both sides, the fixed orifices has been seted up on the cylinder gasket body, the border of fixed orifices is provided with fills up the body, fill up the body including the annular arch that forms in the fixed orifices avris, the fixed orifices border is formed with perpendicular limit, it turns over towards the cylinder gasket body and turns over and be formed with the turn-ups to erect limit tip. This application has the effect that improves cylinder gasket production efficiency.

Description

Cylinder gasket

Technical Field

The application relates to the technical field of cylinders, in particular to a cylinder gasket.

Background

The cylinder gasket is positioned between the cylinder cover and the cylinder body, and has the functions of filling up microscopic pores between the cylinder body and the cylinder cover, ensuring good sealing performance at a joint surface, further ensuring sealing of a combustion chamber and preventing air leakage of the cylinder and water leakage of a water jacket. Therefore, the head gasket should have sufficient strength and be pressure-resistant, heat-resistant, and corrosion-resistant. In addition, certain elasticity is required to compensate for roughness and unevenness of the top surface of the engine body and the bottom surface of the cylinder head, and deformation of the cylinder head due to gas force when the engine works.

The metal-composite material gasket is a cylinder gasket which is widely used and comprises a cylinder gasket body and tetrafluoro rubber layers fixed on two sides of the cylinder gasket body, wherein a fixing hole is formed in the cylinder gasket body, and a gasket body is installed at the fixing hole. The cushion body is formed by punching and flanging a cylindrical thin plate, when the cushion body is installed, a flanging which is turned out for 90 degrees is formed at one end of the cylindrical thin plate through punching, then the cylindrical thin plate penetrates through a fixing hole of the cylinder cushion body, and then the other end of the cylindrical thin plate is punched to form the flanging which is turned out for 90 degrees, so that the cushion body is formed. Through setting up the pad body, can prevent to crush the rubber layer, guaranteed the effective leakproofness on rubber layer.

Aiming at the related technologies, the process steps for installing the gasket body are complicated, so that the production efficiency of the cylinder gasket is low.

SUMMERY OF THE UTILITY MODEL

In order to improve the production efficiency of cylinder gasket, this application provides a cylinder gasket.

The application provides a cylinder gasket, adopts following technical scheme:

the cylinder gasket comprises a cylinder gasket body and rubber layers fixedly arranged on two sides of the cylinder gasket body, wherein a fixing hole is formed in the cylinder gasket body, a gasket body is arranged at the edge of the fixing hole and comprises an annular bulge formed at the edge side of the fixing hole, a vertical edge is formed on the edge of the fixing hole, and the end part of the vertical edge is turned over towards the cylinder gasket body to form a turned edge.

Through adopting above-mentioned technical scheme, cylinder gasket body and pad body structure as an organic whole, at the in-process of cylinder gasket production, earlier through punching a hole at the cylinder gasket body formation fixed orifices, then the punching press makes the outside of fixed orifices form annular protrusion, carries out the punching press to the fixed orifices, makes the border of fixed orifices form and erects the limit, then will erect the limit punching press and turn over a formation turn-ups, make the turn-ups support on the cylinder gasket body, at last at cylinder gasket body both sides mucilage binding rubber. According to the arrangement, on one hand, the processing steps are reduced, the production efficiency of the cylinder gasket is improved, on the other hand, when the fixing hole is formed in the punched hole, the generation of waste materials is reduced, part of the waste materials are utilized to form the gasket body, the waste of raw materials is reduced, and the cost is effectively saved.

Preferably, the thickness of the cylinder gasket body is 0.4-0.6 mm.

Through adopting above-mentioned technical scheme, when the cylinder gasket body is too thin, form the cylinder gasket body at the punching press and cause the cylinder gasket body to damage easily at the whole stamping process that fills up the body and form, when the cylinder gasket body is too thick, the punching press processing of being not convenient for.

Preferably, the thickness of the pad body is 2.4-2.6 mm.

Through adopting above-mentioned technical scheme, when filling up the thickness of body when thin, reduced its biggest bearing capacity, when filling up the body when too thick, need cooperate the rubber layer thickness that uses and also should corresponding thickening, can increase cylinder head gasket whole thickness like this, cause the output efficiency of cylinder.

Preferably, the thickness of the rubber layer is 4.0-4.5 mm.

Through adopting above-mentioned technical scheme, when the thickness on rubber layer is too thin, can weaken the sealed effect of cylinder gasket, when the thickness on rubber layer is too thick, can increase the whole thickness of cylinder gasket, cause the compression pressure of cylinder to hang down, directly lead to output efficiency to descend.

Preferably, the top surface of the cylinder gasket body is provided with a first annular gasket, and the end part of the flanging is abutted against the top surface of the first annular gasket.

Through adopting above-mentioned technical scheme, support behind the turn-ups upset at first annular gasket top surface, compare in the turn-ups directly support at cylinder gasket body top surface, shortened turn-ups length, reduced the annular turn-ups and appeared cracked condition and taken place, simultaneously, make the cylinder gasket fixed orifices that the production was processed out more regular around.

Preferably, the top surface of the cylinder gasket body is provided with a second annular gasket, and the end part of the flanging is abutted against the end wall of the second annular gasket.

Through adopting above-mentioned technical scheme, support the tip at second annular gasket after the turn-ups upset, compare in the turn-ups directly support at cylinder gasket body top surface, shortened turn-ups length, reduced the annular turn-ups and appeared cracked condition and taken place, simultaneously, make the cylinder gasket fixed orifices that the production was processed out more regular around.

Preferably, the rubber layer is provided with an elastic convex line on the side wall far away from the cylinder cushion body.

Through adopting above-mentioned technical scheme, when cylinder cap and cylinder body compress tightly, the deformation takes place for the elasticity burr, realizes microcosmic sealed, has further improved the leakproofness between cylinder cap and the cylinder body, and then has guaranteed the sealed of combustion chamber, prevents that cylinder gas leakage and water jacket from leaking.

Preferably, the side wall of the rubber layer far away from the cylinder gasket body is further coated with an anti-sticking coating.

Through adopting above-mentioned scheme, reduced the adhesion between rubber layer and cylinder cap and the cylinder body, reduced because of the condition emergence that work causes the rubber layer to glue the jar under high temperature for a long time.

Preferably, the cylinder cushion body is further provided with a plurality of through holes.

Through adopting above-mentioned technical scheme, the rubber layer that is located cylinder gasket body both sides links into an integrated entity through a plurality of passing through, has improved the joint strength of rubber layer and cylinder gasket body.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the gasket body and the cylinder gasket body are integrally formed, so that the processing steps are reduced, the production efficiency of the cylinder gasket is improved, meanwhile, the waste of raw materials is reduced, and the cost is effectively saved;

2. the thickness of the cylinder gasket body, the gasket body and the rubber layer is limited, so that the cylinder gasket is convenient to process and is not easy to damage in the production process;

3. this application has reduced the adhesion between rubber layer and cylinder cap and the cylinder body through setting up anti-adhesion coating, has reduced the condition emergence that the rubber layer glues the cylinder.

Drawings

FIG. 1 is a schematic view showing the overall structure of a cylinder head gasket in embodiment 1 of the present application;

FIG. 2 is a cross-sectional view showing a structure of a head gasket according to embodiment 1 of the present application;

FIG. 3 is a schematic view showing the structure of a through hole in embodiment 1 of the present application;

FIG. 4 is a cross-sectional view showing a structure of a head gasket according to embodiment 2 of the present application;

fig. 5 is a sectional view showing a structure of a cylinder head gasket according to embodiment 3 of the present application.

Reference numerals: 1. a cylinder cushion body; 2. a rubber layer; 3. a fixing hole; 4. a cushion body; 5. an annular projection; 6. erecting edges; 7. flanging; 8. a first annular shim; 9. a second annular gasket; 10. an elastic wale; 11. an anti-sticking coating; 12. and a through hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a cylinder gasket.

Example 1

Referring to fig. 1 and 2, the cylinder gasket comprises a cylinder gasket body 1, and the thickness of the cylinder gasket body 1 can be arbitrarily selected from 0.4mm to 0.6mm, in the embodiment of the application, the thickness of the cylinder gasket body 1 is 0.5 mm. The two sides of the cylinder pad body 1 are both fixedly provided with rubber layers 2, the rubber layers 2 are made of fluororubber, the thickness of the rubber layers 2 can be selected randomly from 4.0mm to 4.5mm, and in the embodiment of the application, the thickness of the rubber layers 2 is 4.2 mm. The cylinder pad body 1 is provided with a fixing hole 3, and the fixing hole 3 penetrates through the rubber layer 2. The position integrated into one piece that cylinder pad body 1 is located 3 borders of fixed orifices is provided with fills up body 4, fills up body 4 and includes the annular arch 5 that forms at the 3 outside punching presses of fixed orifices, and the border punching press of fixed orifices 3 is formed with perpendicular limit 6, and the tip punching press that annular arch 5 was kept away from to perpendicular limit 6 forms turn-ups 7, and turn-ups 7 turns over towards cylinder pad body 1 direction and turns over, and supports tightly with cylinder pad body 1 surface. The vertical distance between the bottommost end of the annular bulge 5 and the topmost end of the turnup 7 can be selected from 2.4mm-2.6mm at will, and in the embodiment of the application, the vertical distance between the bottommost end of the annular bulge 5 and the topmost end of the turnup 7 is 2.5 mm.

In the production process of cylinder gasket, punch a hole earlier and form fixed orifices 3 to cylinder gasket body 1, then form annular protrusion 5 in the outside punching press of fixed orifices 3, later with the border punching press formation vertical edge 6 of fixed orifices 3, then turn over to cylinder gasket body 1 through the tip that the punching press made vertical edge 6 and turn over a formation turn-ups 7 to make turn-ups 7 conflict cylinder gasket body 1 surface, glue at cylinder gasket body 1 both sides at last and adorn rubber formation rubber layer 2. The production steps of the cylinder gasket are shortened, the production efficiency is improved, and the part of waste materials originally removed by punching are reused to form the gasket body 4, so that the waste of raw materials is reduced.

Referring to fig. 1 and 2, the rubber layer 2 is provided with an elastic convex line 10 away from the side wall of the cylinder gasket body 1 in an integrated manner, and the surface of the rubber layer 2 is coated with an anti-sticking coating 11, so that the sealing effect of the cylinder gasket is improved, and the cylinder sticking is reduced.

Referring to fig. 3, the cylinder gasket body 1 is further provided with a plurality of through holes 12, and when rubber is glued, the rubber on two sides of the cylinder gasket body 1 passes through the through holes 12 and then is connected together, so that the rubber layers 2 on two sides of the cylinder gasket body 1 are of an integral structure, and the locking firmness between the cylinder gasket body 1 and the rubber layers 2 is improved.

The implementation principle of the embodiment 1 of the application is as follows: during production, form cylinder gasket body 1 through the punching press earlier, then punch a hole to cylinder gasket body 1 in proper order and form fixed orifices 3, to the outside punching press of fixed orifices 3 formation annular bulge 5, to the border punching press of fixed orifices 3 perpendicular limit 6, to perpendicular 6 punching press turn-ups 7 on limit, glue dress rubber layer 2, obtain the cylinder gasket finished product, not only shortened production process, improved production efficiency, still saved the raw materials.

Example 2

Referring to fig. 4, the difference from embodiment 1 is that a first annular gasket 8 is fixed on one side of the head gasket body 1 near the flange 7, and the end of the flange 7 abuts against the top surface of the first annular gasket 8. Through setting up first annular gasket 8, shortened the length of turn-ups 7, reduced the condition emergence that the crack appears in turn-ups 7 when processing, simultaneously, make the cylinder gasket fixed orifices 3 that the production and processing came out around more regular.

Example 3

Referring to fig. 5, the difference from embodiment 1 is that a second annular gasket 9 is fixed on one side of the head gasket body 1 near the flange 7, and the end of the flange 7 abuts against the end wall of the second annular gasket 9. Through setting up second annular gasket 9, shortened the length of turn-ups 7, reduced the condition emergence that the crack appears in turn-ups 7 when processing, simultaneously, make the cylinder gasket fixed orifices 3 that the production and processing came out regular more around.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The cylinder gasket is characterized by comprising a cylinder gasket body (1) and rubber layers (2) fixedly arranged on two sides of the cylinder gasket body (1), wherein a fixing hole (3) is formed in the cylinder gasket body (1), a gasket body (4) is arranged at the edge of the fixing hole (3), the gasket body (4) comprises an annular bulge (5) formed at the edge of the fixing hole (3), a vertical edge (6) is formed at the edge of the fixing hole (3), and the end part of the vertical edge (6) is turned over towards the cylinder gasket body (1) to form a turned edge (7).

2. The cylinder head gasket according to claim 1, characterized in that the thickness of the cylinder head gasket body (1) is 0.4-0.6 mm.

3. The cylinder head gasket according to claim 2, characterized in that the thickness of the gasket body (4) is 2.4-2.6 mm.

4. The cylinder head gasket according to claim 3, characterized in that the thickness of the rubber layer (2) is 4.0-4.5 mm.

5. Cylinder gasket according to claim 4, characterized in that the top surface of the cylinder gasket body (1) is provided with a first annular gasket (8), and the end of the flange (7) abuts against the top surface of the first annular gasket (8).

6. The cylinder gasket according to claim 4, characterized in that the top surface of the cylinder gasket body (1) is provided with a second annular gasket (9), and the end of the flange (7) abuts against the end wall of the second annular gasket (9).

7. Cylinder gasket according to one of claims 4 to 6, characterised in that the rubber layer (2) is provided with an elastic relief (10) on the side wall facing away from the gasket body (1).

8. Cylinder gasket according to claim 7, characterized in that the rubber layer (2) is also coated with an anti-adhesive coating (11) on the side wall facing away from the gasket body (1).

9. The cylinder head gasket according to claim 7, characterized in that the cylinder head gasket body (1) is further provided with a plurality of through holes (12).