CN201827359U - Combined sealing gasket for rear cover of oil pump - Google Patents

Abstract

The utility model provides a combined sealing gasket for a rear cover of an oil pump. The combining sealing gasket comprises a ring-shaped thin metal plate. Assembly holes are formed on the ring-shaped thin metal plate along the outer periphery of an inner hole, L-shaped concave platforms are arranged on the upper surface and the lower surface of the ring-shaped thin metal plate along the edge of the opening of the inner hole, and the L-shaped concave platforms along the edge of the opening of the inner hole are combined with a rubber seal lip, and the height of the seal lip is greater than the thickness of the ring-shaped thin metal plate. The combined sealing gasket provided by the utility model adopts the rubber seal lip partially combined with the inner hole of the ring-shaped thin metal plate, thereby avoiding the falling off of rubber chips when bolts are screwed during the assembly process.

Description

A kind of oil pump rear lid combination seal pad

Technical field

The utility model relates to the oil pump rear lid combination seal pad of thin metal plain film of a kind of annular and rubber combined composition, particularly a kind of rubber seal lip of oil pump rear lid combination seal pad.

Background technique

Oil pump rear lid combination seal pad is used for the sealing between oil pump rear lid and the oil pump body.Oil pump rear lid combination seal pad is metal and rubber combined pad.In the prior art, the oil pump rear lid combination seal is lined with the thin metal plain film of annular, annular approaches on the metal plain film, is distributed with pilot hole along the endoporus outer periphery, the outer surface of the thin metal plain film of annular is coated with rubber layer, the endoporus of the thin metal plain film of annular, be compounded with the rubber seal lip along the edge of inner orifice, the height of seal lip is greater than the thickness of the thin metal plain film of annular.During assembling, oil pump rear lid combination seal pad is placed between oil pump rear lid and the oil pump body, have on oil pump rear lid and the oil pump body and oil pump rear lid and oil pump body between corresponding pilot hole, with the bolt that passes above-mentioned corresponding pilot hole respectively oil pump rear lid combination seal pad is clamped between oil pump rear lid and the oil pump body, the rubber seal lip is used for the sealing in oil pump hole.Thin metal plain film of the annular of this oil pump rear lid combination seal pad and the compound of rubber are that full clad type is compound, after compound, upper and lower surface, assembling aperture at the thin metal plain film of annular all are compounded with the identical thin rubber layer of thickness with outer edge, at the endoporus of the thin metal plain film of annular, be compounded with the rubber seal lip along the edge of inner orifice, when in assembly process, screwing bolt, the compound thin rubber layer in the upper and lower surface of the thin metal plain film of annular and assembling aperture can come off, scrap gum under coming off enters in the oil pump easily, influences the normal operation of oil pump.

Summary of the invention

The purpose of this utility model is in order to overcome above-mentioned deficiency, proposes a kind ofly when assembly process, does not have the oil pump rear lid combination seal pad that scrap gum comes off.

The utility model is realized with the following method.

The oil pump rear lid combination seal is lined with the thin metal plain film of annular, annular approaches on the metal plain film, is distributed with pilot hole along the endoporus outer periphery, the above and below of the thin metal plain film of annular has L shaped concave station respectively along the edge of inner orifice, along being compounded with the rubber seal lip on the L shaped concave station at inner orifice edge, the height of seal lip is greater than the thickness of the thin metal plain film of annular.

The utility model only is compounded with the rubber seal lip in the part of the inner orifice of the thin metal plain film of annular, when screwing bolt in assembly process, does not have scrap gum and comes off.

Below in conjunction with accompanying drawing, the utility model is further described.

Description of drawings

Fig. 1 is that the master of a kind of oil pump rear lid combination seal pad of proposing according to invention scheme of the present utility model looks schematic representation;

Fig. 2 is the A-A generalized section of Fig. 1;

Fig. 3 is the I place enlarged diagram of Fig. 2.

Embodiment

Among Fig. 1～Fig. 3, the oil pump rear lid combination seal is lined with the thin metal plain film 1 of annular, annular approaches on the metal plain film, is distributed with pilot hole 2 along the endoporus outer periphery, the above and below 3,4 of the thin metal plain film of annular has L shaped concave station 5,6 respectively along the edge of inner orifice, along being compounded with rubber seal lip 7 on the L shaped concave station at inner orifice edge, the height H of seal lip is greater than the thickness h of the thin metal plain film of annular.

Claims (1)

1. oil pump rear lid combination seal pad, the thin metal plain film of annular is arranged, annular approaches on the metal plain film, is distributed with pilot hole along the endoporus outer periphery, it is characterized in that: the above and below of the thin metal plain film of annular has L shaped concave station respectively along the edge of inner orifice, along being compounded with the rubber seal lip on the L shaped concave station at inner orifice edge, the height of seal lip is greater than the thickness of the thin metal plain film of annular.

Images