CN219082248U - Static ring group structure of water seal of internal combustion engine - Google Patents

Abstract

The utility model provides a static ring group structure of an internal combustion engine water seal, which comprises an annular static group seat arranged in a mounting hole, wherein the static group seat comprises a tubular inner ring wall, a static ring is sleeved on the inner ring wall, the rear side of the static ring forms an annular step structure which is staggered forwards and backwards in the axial direction, the annular step structure comprises a rear outer ring step surface and a front inner ring step surface, the outer ring step surface is connected with the inner ring step surface through a step wall, the inner ring step surface and the outer peripheral surface of the inner ring wall are surrounded into an annular groove with a notch facing backwards, and an O-shaped ring is embedded in the annular groove. The utility model greatly simplifies the structure of the water seal of the internal combustion engine, replaces the original corrugated pipe with a complex structure with the O-shaped ring, and the two ends of the original corrugated pipe are required to be sealed with peripheral components, and the O-shaped ring is only required to be sealed at one position.

Description

Static ring group structure of water seal of internal combustion engine

Technical Field

The utility model relates to a water seal component for an internal combustion engine, in particular to a static ring group structure of a water seal of the internal combustion engine.

Background

The water seal for an internal combustion engine is generally mounted on a cooling water pump of the internal combustion engine for forming a seal between a moving part and a stationary part, and generally includes a stationary ring set for being mounted in a mounting hole on a pump body and a movable ring set mounted on a rotating shaft.

In the prior art, the quiet ring group generally includes quiet ring, quiet group seat, bellows and spring, bellows and quiet ring are installed on quiet group seat, the spring housing is on the bellows, and it is on the left and right sides both ends of bellows, bellows one end is on quiet group seat to be propped, the other end is connected with quiet ring, the moving ring group includes the moving ring and is used for installing at epaxial transmission cover, the moving ring passes through the cushion to be connected with the transmission cover, can make an terminal surface of quiet ring keep laminating with an terminal surface of moving ring through the elasticity of spring, during operation, the moving shaft drives moving ring group rotation, and install the quiet ring on the pump body and do not rotate, remain the laminating throughout through an terminal surface of moving ring and an terminal surface of quiet ring and can prevent water to flow through from moving ring and quiet ring's clearance, thereby play sealed effect. In the above scheme, the corrugated pipe is required to be arranged to realize the sealing of each part in the static ring group, and the two ends of the corrugated pipe are required to be tightly connected when being installed, so that the corrugated pipe is prevented from being crushed, other parts around the corrugated pipe are required to be designed in a targeted manner, the axial size of the water seal with a complex integral structure is larger, and the production cost, the equipment and the space requirement for installation are higher.

Disclosure of Invention

The utility model aims to provide a static ring group structure of an internal combustion engine water seal, which has a simple structure and can ensure a sealing effect.

The utility model adopts the following technical scheme for realizing the purposes: the utility model provides a quiet ring group structure of internal-combustion engine water seal, includes the quiet group seat of annular of installing in the mounting hole, quiet group seat includes tubular inner circle wall, the cover is equipped with quiet ring on the inner circle wall, the rear side of quiet ring forms the annular step structure of dislocation around in the axial, annular step structure includes outer loop step face and the inner ring step face of leaning on the front, link up through the step wall between outer loop step face and the inner ring step face, the notch is formed into the annular channel backward in the surrounding of step wall, inner ring step face and the outer peripheral face three of inner circle wall, the embedding has O type circle in the annular channel.

According to the scheme, an original corrugated pipe structure is canceled, an annular groove positioned between a static ring and an inner ring wall is formed through structural design, and then an O-shaped ring is embedded into the annular groove to be used as a seal.

Preferably, the outer ring of the inner ring wall is coaxially provided with a tubular outer ring wall, the outer ring wall is connected with the rear end of the inner ring wall through an annular pressure-bearing bottom plate, and the outer ring wall, the inner ring wall and the pressure-bearing bottom plate are of an integrated structure.

Preferably, an annular flat push ring is sleeved on the inner ring wall, the front side surface of the push ring is attached to the outer ring step surface, and a spring for driving the push ring and the pressure-bearing bottom plate to axially separate is arranged between the push ring and the pressure-bearing bottom plate.

Preferably, the joint of the pressure-bearing bottom plate and the inner ring wall forms a forwardly concave annular concave table.

Preferably, the front end of the outer ring wall is provided with an annular right-angle flanging.

Preferably, the front end of the inner ring wall is flush with the front end of the outer ring wall, and the front end of the inner ring wall is bent inwards to form a closing-in structure.

Preferably, an anti-rotation ring is arranged between the front part of the outer ring wall and the outer periphery of the stationary ring, the anti-rotation ring and the outer ring wall form interference fit, a rotation stopping groove with a groove length direction parallel to the shaft core direction and a groove opening radially outwards is formed in the outer peripheral surface of the stationary ring, and a rotation stopping convex rib is arranged on the inner ring of the anti-rotation ring corresponding to the position and the shape of the rotation stopping groove.

Preferably, an annular sealant is provided on the outer peripheral surface of the outer ring wall.

Drawings

FIG. 1 is a schematic view of the installation state of the present utility model;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is a schematic view of the stationary ring according to the present utility model;

FIG. 4 is a schematic view of the structure of an O-ring according to the present utility model.

Reference numerals illustrate: 1. a moving ring set; 10. a static group seat; 11. an inner ring wall; 111. a closing-in structure; 12. an outer collar wall; 121. a right angle flanging; 13. a pressure-bearing bottom plate; 14. an annular concave table; 20. a stationary ring; 21. an outer ring step surface; 22. an inner ring step surface; 23. a step wall; 24. a rotation stopping groove; 30. an O-ring; 40. a push ring; 50. a spring; 60. an anti-rotation ring; 61. a rotation stopping convex rib; 70. and (3) annular sealant.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the description of the present utility model, it should be noted that the terms "bottom", "outside", "front-rear", etc. indicate orientation or positional relationship based on the orientation or positional relationship shown in the use state of the water seal of the internal combustion engine, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The front end refers to the left end of the drawing, which is the end far away from the water pump mounting hole, and the rear end refers to the right end of the drawing, which is the end near the inside of the water pump mounting hole. The inner refers to a position close to the axis, and the outer refers to a position far from the axis.

In the description of the present utility model, it should be noted that, unless explicitly specified and defined otherwise, the term "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, 2 and 3, a static ring 20 group structure of an internal combustion engine water seal comprises an annular static group seat 10 arranged in a mounting hole, the static group seat 10 comprises a tubular inner ring wall 11, the inner ring wall 11 is sleeved with a static ring 20, the rear side of the static ring 20 is formed into an annular step structure which is staggered back and forth in the axial direction, the annular step structure comprises a rear outer ring step surface 21 and a front inner ring step surface 22, the outer ring step surface 21 is connected with the inner ring step surface 22 through a step wall 23, and the step wall 23, the inner ring step surface 22 and the outer peripheral surface of the inner ring wall 11 form an annular groove with a notch facing back, and an O-ring 30 is embedded in the annular groove.

In the above scheme, when the O-shaped ring 30 is installed, the O-shaped ring 30 is sleeved on the inner ring wall 11 and then sleeved into the static ring 20, the O-shaped ring 30 abuts against the inner ring step surface 22, sealing is formed at the position, and the step wall 23 limits and extrudes the radial direction of the O-shaped ring 30, so that the O-shaped ring is more attached to the inner ring wall 11 to play the role of a sealing ring. The original corrugated pipe structure is canceled, the annular groove between the static ring 20 and the inner ring wall 11 is formed through structural design, then the O-shaped ring 30 is embedded into the annular groove to be used as sealing, the structure of the water seal of the internal combustion engine is greatly simplified, the original corrugated pipe with complex structure is replaced by the O-shaped ring 30, the two ends of the original corrugated pipe are required to be sealed with peripheral components, and the O-shaped ring 30 is only required to be sealed at one position.

Further, the outer ring of the inner ring wall 11 is coaxially provided with a tubular outer ring wall 12, the outer ring wall 12 is connected with the rear end of the inner ring wall 11 through an annular pressure-bearing bottom plate 13, and the outer ring wall 12, the inner ring wall 11 and the pressure-bearing bottom plate 13 are of an integrated structure. Thus, the static group seat 10 can form an annular groove structure with advanced notch, the static group seat 10 has enough radial thickness and is hollow, so that other parts can be arranged in the groove cavity of the annular groove structure, and three requirements of reducing weight, ensuring strength and ensuring enough installation space are met.

Further, an annular flat push ring 40 is sleeved on the inner ring wall 11, the front side surface of the push ring 40 is attached to the outer ring step surface 21, and a spring 50 for driving the push ring 40 and the pressure-bearing bottom plate 13 to axially separate is arranged between the push ring and the pressure-bearing bottom plate 13. When the O-shaped sealing device is installed, the push ring 40 is sleeved on the inner ring wall 11, the O-shaped ring 30 is sleeved on the inner ring wall 11 and then sleeved on the static ring 20, the O-shaped ring 30 abuts against the inner ring step surface 22, and therefore a closed annular cavity is formed by the push ring 40, the step wall 23, the inner ring step surface 22 and the inner ring wall 11 and is used for accommodating the O-shaped ring 30, and meanwhile the push ring 40 axially extrudes the O-shaped ring 30, so that the sealing effect is further improved.

Further, the joint of the pressure-bearing bottom plate 13 and the inner ring wall 11 forms a ring-shaped concave table 14 which is concave forwards. After the installation is completed, the pressure in the water pump acts on the pressure-bearing bottom plate 13, the pressure-bearing bottom plate 13 is provided with an annular concave table 14, the annular concave table 14 and the transmission shaft form an annular groove, the liquid can form radial pressure and simultaneously has axial and radial thrust after entering the concave table groove, and the pressure-bearing bottom plate 13 has certain elastic deformation capacity, so that the pressure-bearing bottom plate 13 can form outward expansion deformation so as to be firmly pressed on the inner wall of the installation hole. Meanwhile, other parts of the pressure-bearing bottom plate 13 still bear axial thrust, so that the pressure-bearing bottom plate 13 can press the spring 50 to drive the stationary ring 20 to push outwards, and the stationary ring 20 is tightly attached to the movable ring group 1.

Further, the front end of the outer ring wall 12 is provided with an annular right-angle flanging 121. The right-angled flange 121 is positioned directly against the hole edge of the mounting hole during mounting, while sealing glue may be provided at the rear side of the right-angled flange 121.

Further, the front end of the inner ring wall 11 is flush with the front end of the outer ring wall 12, and the front end of the inner ring wall 11 is bent inwards to form a closing-in structure 111. Because the push ring 40, the O-ring 30 and the stationary ring 20 are required to be sleeved on the inner ring wall 11, the closing-in structure 111 is provided to facilitate the sleeving.

Further, an anti-rotation ring 60 is arranged between the front part of the outer ring wall 12 and the outer periphery of the stationary ring 20, the anti-rotation ring 60 and the outer ring wall 12 form interference fit, the outer periphery of the stationary ring 20 is provided with anti-rotation grooves 24 with groove length direction parallel to the axial core direction and with the groove opening facing outwards in the radial direction, and the inner ring of the anti-rotation ring 60 is provided with anti-rotation ribs 61 corresponding to the positions and the shapes of the anti-rotation grooves. Thus, the original static ring seat is directly canceled, the outer ring wall 12 is used as the static ring seat, and meanwhile, the anti-rotation ring 60 and the static ring 20 are arranged to form the anti-rotation convex rib 61 and the anti-rotation groove 24 to be matched, so that the capability of the anti-rotation convex rib 61 to move along the groove length direction of the anti-rotation groove 24 is reserved, and the static ring 20 can press the movable ring group 1 under the action of a spring.

Further, an annular sealant 70 is provided on the outer peripheral surface of the outer ring wall 12. Facilitating a sealing connection of the collar wall 12 with the mounting hole.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.

Claims (8)

1. The utility model provides a quiet ring group structure of internal-combustion engine water seal, includes annular quiet group seat (10) of installing in the mounting hole, its characterized in that: the static group seat (10) comprises a tubular inner ring wall (11), a static ring (20) is sleeved on the inner ring wall (11), an annular step structure staggered front and back in the axial direction is formed at the rear side of the static ring (20), the annular step structure comprises a rear outer ring step surface (21) and a front inner ring step surface (22), the outer ring step surface (21) is connected with the inner ring step surface (22) through a step wall (23), the inner ring step surface (22) and the outer peripheral surface of the inner ring wall (11) form an annular groove with a notch facing the rear, and an O-shaped ring (30) is embedded in the annular groove.

2. The static ring set structure of the water seal of the internal combustion engine according to claim 1, wherein: the outer ring of the inner ring wall (11) is coaxially provided with a tubular outer ring wall (12), the outer ring wall (12) is connected with the rear end of the inner ring wall (11) through an annular pressure-bearing bottom plate (13), and the outer ring wall (12), the inner ring wall (11) and the pressure-bearing bottom plate (13) are of an integrated structure.

3. The static ring set structure of the water seal of the internal combustion engine according to claim 2, wherein: the annular flat push ring (40) is sleeved on the inner ring wall (11), the front side surface of the push ring (40) is attached to the outer ring step surface (21), and a spring (50) for driving the push ring (40) and the pressure-bearing bottom plate (13) to axially separate from each other is arranged between the push ring and the pressure-bearing bottom plate.

4. A static ring assembly structure for a water seal of an internal combustion engine according to claim 3, wherein: the joint of the pressure-bearing bottom plate (13) and the inner ring wall (11) forms a forward concave annular concave table (14).

5. The static ring set structure of a water seal for an internal combustion engine according to claim 2, 3 or 4, wherein: the front end of the outer ring wall (12) is provided with an annular right-angle flanging (121).

6. The static ring set structure of the water seal of the internal combustion engine according to claim 5, wherein: the front end of the inner ring wall (11) is flush with the front end of the outer ring wall (12), and the front end of the inner ring wall (11) is inwards bent to form a closing-in structure (111).

7. The static ring set structure of a water seal for an internal combustion engine according to claim 2, 3 or 4, wherein: an anti-rotation ring (60) is arranged between the front part of the outer ring wall (12) and the periphery of the stationary ring (20), the anti-rotation ring (60) and the outer ring wall (12) form interference fit, a rotation stopping groove (24) with a groove length direction parallel to the shaft core direction and a groove opening radially outwards is arranged on the periphery of the stationary ring (20), and a rotation stopping convex rib (61) is arranged on the inner ring of the anti-rotation ring (60) corresponding to the position and the shape of the rotation stopping groove.

8. The static ring set structure of a water seal for an internal combustion engine according to claim 2, 3 or 4, wherein: an annular sealant (70) is arranged on the outer peripheral surface of the outer ring wall (12).

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