CN210264949U - O-shaped ring anti-falling structure for automobile engine - Google Patents

Abstract

An O-shaped ring anti-falling structure for an automobile engine comprises a connecting flange, wherein a through hole is formed in the connecting flange, a fixing groove is formed in the outer ring of the through hole, at least two groups of limiting structures are arranged on the groove walls on two sides of the fixing groove, the spacing between the limiting structures is equal, each limiting structure comprises an extrusion block and a limiting block, the extrusion blocks are respectively arranged on the groove walls on two sides of the fixing groove, the limiting blocks are close to one side of a port of the fixing groove, the extrusion blocks are close to one side of the groove bottom of the fixing groove, the limiting blocks and one side surfaces of the extrusion blocks are oppositely arranged, the spacing between the limiting blocks and the extrusion blocks is smaller than the diameter of the cross section of the O-shaped sealing ring, the O-shaped sealing ring is placed in the fixing groove and is embedded between the limiting blocks and the extrusion blocks, so that the, so that the fixing structure is fixed in the limiting structure and is prevented from falling off from the fixing groove.

Description

O-shaped ring anti-falling structure for automobile engine

Technical Field

The utility model belongs to the technical field of the engine seal, concretely relates to O type circle anti-drop structure for automobile engine.

Background

The seal ring is mainly used for preventing the leakage of the working medium and the invasion of external dust and foreign matters. The O-shaped rubber sealing rings used on parts such as a cylinder, a piston and the like on the engine seal the engine, but the rubber sealing rings are easy to fall off after being used for a long time, so that the engine is easy to leak, the engine cannot normally run, and even the engine is damaged. The anti-drop structure of the existing engine only adopts the convex block to limit the rubber sealing ring in the mounting groove, the limiting effect is general, the sealing ring cannot be completely fixed, the sealing ring still easily drops, the environment of the engine is generally in a high-temperature state, the aging of the rubber ring can be accelerated, the rubber ring after aging greatly influences the limiting effect of the convex block on the rubber ring, and the sealing ring is enabled to drop from the limiting structure more easily.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model discloses an O type circle anti-drop structure for automobile engine.

The specific technical scheme is as follows:

an O-shaped ring anti-falling structure for an automobile engine comprises a connecting flange, wherein a through hole is formed in the connecting flange, a fixing groove is formed in the outer ring of the through hole, the fixing groove is of an annular structure and used for placing an O-shaped sealing ring, at least two groups of limiting structures are arranged on the groove walls on the two sides of the fixing groove, the spacing between the limiting structures is equal, each group of limiting structures comprises an extrusion block and a limiting block, the extrusion block and the extrusion block are respectively arranged on the groove walls on the two sides of the fixing groove, the limiting block is close to one side of a port of the fixing groove, the extrusion block is close to one side of the groove bottom of the fixing groove, the limiting block and one side surface of the extrusion block are oppositely arranged, the spacing between the limiting block and the extrusion block is smaller than the diameter of the cross, the O-shaped sealing ring is embedded between the limiting block and the extrusion block, has certain elasticity, and is in a compression deformation state, so that the friction force between the surface of the O-shaped sealing ring and the limiting block and the extrusion block is increased, and the O-shaped sealing ring is fixed in the limiting structure; and one side of the connecting flange is fixedly connected with a matching flange through bolts and nuts.

Furthermore, the surface of one side, opposite to the limiting block and the extrusion block, of the limiting block and the groove wall of the fixing groove on one side of the extrusion block are provided with anti-skidding convex lines, and friction force between the O-shaped sealing ring and the limiting block and between the O-shaped sealing ring and the extrusion block is further increased through the anti-skidding convex lines.

Furthermore, the cross sections of the limiting block and the extrusion block are in right-angled triangle structures.

Furthermore, the size of the limiting block is smaller than that of the extrusion block.

Furthermore, an included angle between the surface of one side, opposite to the limiting block and the extrusion block, of the limiting block and the groove bottom of the fixing groove is 60 degrees.

Furthermore, the shape of the surface of one side, opposite to the limiting block and the extrusion block, is consistent with the shape of the groove wall of the fixing groove.

The utility model has the advantages that:

the utility model discloses it cooperatees and carries on spacingly to O type sealing washer to adopt stopper and extrusion piece in the fixed slot, and interval between stopper and the extrusion piece is less than the diameter of O type sealing washer cross section, thereby make it be compression state and imbed in limit structure, the stopper carries on spacingly to O type sealing washer simultaneously, effectively prevented that O type sealing washer from droing from the spacing groove, and stopper and the relative side of extrusion piece all are equipped with anti-skidding burr on the surface, thereby can increase the frictional force between O type sealing washer and stopper and the extrusion piece, and further prevent that O type sealing washer from droing.

Drawings

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

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is an enlarged schematic view of a point a in fig. 1.

Fig. 4 is a cross-sectional view of the fixing groove of the present invention.

Fig. 5 is the butt structure schematic diagram of the middle connecting flange and the matching flange of the present invention.

Detailed Description

For making the technical scheme of the utility model clear more clearly and definitely, it is right to combine the drawing below the utility model discloses further describe, any is right the utility model discloses technical scheme's technical characteristic carries out the scheme that equivalent replacement and conventional reasoning reachs and all falls into the utility model discloses protection scope. The utility model discloses in the fixed connection who mentions, fixed setting is the general connected mode among the mechanical field, and welding, bolt and nut are connected and the screw connection is all can.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Description of the reference numerals

The anti-skidding sealing ring comprises a connecting flange 1, a through hole 2, a fixing groove 3, a limiting structure 4, an extrusion block 41, an anti-skidding convex line 411, a limiting block 42, a matching flange 5 and an O-shaped sealing ring 6.

An O-shaped ring anti-falling structure for an automobile engine comprises a connecting flange, wherein a through hole is formed in the connecting flange, fixing grooves are formed in the outer ring of the through hole, the fixing grooves are of annular structures and used for placing O-shaped sealing rings, the cross sections of the fixing grooves are of rectangular structures, four groups of limiting structures are arranged on the groove walls on the two sides of each fixing groove, the spacing intervals among the limiting structures are equal, each group of limiting structures comprises an extrusion block and a limiting block, the size of each limiting block is smaller than that of the extrusion block, the extrusion blocks and the extrusion blocks are respectively arranged on the groove walls on the two sides of each fixing groove, the cross sections of the extrusion blocks and the limiting blocks are of right-angled triangle structures, the limiting blocks are close to one side of a port of each fixing groove, the extrusion blocks are close to one side of the, the included angle between the surface of the opposite side of the limiting block and the extrusion block and the groove bottom of the fixed groove is 60 degrees, the anti-slip convex patterns are arranged on the surface of the opposite side of the limiting block and the extrusion block and the groove wall of the fixed groove of the opposite side of the extrusion block, the friction force between the O-shaped sealing ring and the limiting block and the extrusion block is further increased through the anti-slip convex patterns, the surface of one side of the limiting block is flush with the end surface of the fixed groove, the distance between the limiting block and the extrusion block is smaller than the diameter of the cross section of the O-shaped sealing ring, the O-shaped sealing ring is placed in the fixed groove and is embedded between the limiting block and the extrusion block, one end of the O-shaped sealing ring is positioned in the fixed groove, the other end of the O-shaped sealing ring is positioned outside the fixed groove, the O-shaped sealing ring has certain elasticity, and therefore the O, preventing the fixing groove from falling off;

the flange is characterized in that a matching flange is fixedly connected to one side of the connecting flange through bolts and nuts, the connecting flange is attached to the matching flange and butted with the matching flange, the O-shaped sealing ring is extruded by the matching flange, further compression of the O-shaped sealing ring is enabled to be completely embedded into the fixing groove and the limiting structure in the fixing groove, and meanwhile the connecting flange and the matching flange are enabled to be kept in a sealing state in the axial direction.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (6)

1. An O-shaped ring anti-falling structure for an automobile engine comprises a connecting flange; the connecting flange is provided with a through hole, a fixing groove is arranged on the outer ring of the through hole, the fixing groove is of an annular structure and is used for placing an O-shaped sealing ring, the connecting flange is characterized in that at least two groups of limiting structures are arranged on the groove walls on the two sides of the fixing groove, the spacing between the limiting structures is equal, each group of limiting structures comprises an extrusion block and a limiting block, the extrusion blocks are respectively arranged on the groove walls on the two sides of the fixing groove, the limiting blocks are close to one side of the port of the fixing groove, the extrusion blocks are close to one side of the groove bottom of the fixing groove, the surfaces of one sides of the limiting blocks and the extrusion blocks are oppositely arranged, the spacing between the limiting blocks and the extrusion blocks is smaller than the diameter of the cross section of the O-shaped sealing ring, the O-shaped sealing ring is placed in the fixing groove and is embedded between the limiting blocks and the, thereby increasing the friction between the surface of the O-shaped sealing ring and the limiting block and the extrusion block, and fixing the O-shaped sealing ring in the limiting structure.

2. The O-ring anti-drop structure for the automobile engine according to claim 1, wherein anti-slip beads are provided on the surfaces of the opposite sides of the stopper and the extrusion block and on the groove wall of the fixing groove on the side of the extrusion block, and the friction force between the O-ring and the stopper and the extrusion block is further increased by the anti-slip beads.

3. The O-ring anti-drop structure for the automobile engine as claimed in claim 1, wherein the cross sections of the stopper and the extrusion block are in a right triangle structure.

4. The O-ring coming-off preventing structure for the automobile engine as recited in claim 1, wherein the stopper has a size smaller than that of the pressing block.

5. The O-ring anti-drop structure for the automobile engine according to claim 1, wherein an included angle between a surface of the stopper block on a side opposite to the pressing block and a groove bottom of the fixing groove is 60 °.

6. The O-ring anti-drop structure for an automobile engine according to claim 1, wherein a shape of an opposite side surface of the stopper and the pressing block is identical to a shape of a groove wall of the fixing groove.

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