CN210106383U

CN210106383U - Gasket ring

Info

Publication number: CN210106383U
Application number: CN201920012526.XU
Authority: CN
Inventors: 张宇峰
Original assignee: ZHEJIANG ZHONGPING POWDER METALLURGY CO Ltd
Current assignee: ZHEJIANG ZHONGPING POWDER METALLURGY CO Ltd
Priority date: 2019-01-04
Filing date: 2019-01-04
Publication date: 2020-02-21
Anticipated expiration: 2029-01-04

Abstract

The utility model discloses a gasket, which comprises a gasket body (1), wherein the middle of the gasket body (1) is provided with a through hole (11) which is coaxial with the gasket body, and the bottom end of the gasket body (1) is provided with an annular lower plane (12) which is coaxial with the gasket body; the top end of the gasket body (1) comprises an annular upper plane (13) which is positioned on the inner ring and is coaxial with the inner ring, and an annular upper cambered surface (14) which is positioned on the outer ring and is coaxial with the outer ring; the excircle edge of the annular upper plane (13) is tangent to the inner circle edge of the annular upper cambered surface (14), and the inner circle edge of the annular upper cambered surface (14) is higher than the excircle edge of the annular upper cambered surface. The utility model discloses an area of contact between up end relative reduction in the design and nut or bolt to reduce the relative friction between packing ring and nut or the bolt, both reduced relative wearing and tearing, make people lighter when twisting nut or bolt again.

Description

Gasket ring

Technical Field

The utility model belongs to the technical field of the packing ring, especially, relate to a packing ring.

Background

The washer is the part that is cushioned between the connected member and the nut. The metal ring, which is generally flat, protects the surface of the connected component from scratching by the nut and distributes the pressure of the nut against the connected component. The gasket is divided into a spherical gasket, a conical gasket, a square bevel gasket for I-steel and the like. The upper end face and the lower end face of the common washer are both planes, so that the nut is in complete contact with the upper end face of the washer, the extrusion force of the nut on the washer is gradually increased along with the screwing of the nut, the larger the contact surface between the nut and the washer is, the larger the friction force between the nut and the washer is, the more serious the abrasion is, and the service life of the washer is shortened.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The to-be-solved technical problem of the utility model is to provide a packing ring that wearing and tearing are little, simple structure is firm and long service life.

(II) technical scheme

In order to solve the technical problem, the utility model provides a gasket, which comprises a gasket body, wherein a through hole coaxial with the gasket body is arranged in the middle of the gasket body, and the bottom end of the gasket body is an annular lower plane coaxial with the gasket body; the top end of the gasket body comprises an annular upper plane which is positioned on the inner ring and is coaxial with the inner ring, and an annular upper cambered surface which is positioned on the outer ring and is coaxial with the outer ring; the outer circle edge of the annular upper plane is tangent to the inner circle edge of the annular upper cambered surface, and the inner circle edge of the annular upper cambered surface is higher than the outer circle edge of the annular upper cambered surface.

The middle of the annular upper plane is provided with an annular chamfer coaxial with the annular upper plane, the annular upper plane is divided into an inner ring upper plane and an outer ring upper plane by the annular outer chamfer, and the inner ring upper plane is higher than the outer ring upper plane; the inner circle edge of the annular upper cambered surface is tangent to the outer circle edge of the outer ring upper plane.

The gasket also comprises an upper elastic gasket and a lower elastic gasket; the upper elastic gasket is fixedly covered on the upper end surface of the gasket body in a matching way, and the middle of the upper elastic gasket is also provided with an upper hole which is matched and communicated with the through hole; the lower elastic gasket is fixedly covered on the lower end surface of the gasket body in a matching way, and the middle of the lower elastic gasket is also provided with a lower hole which is matched and communicated with the through hole.

The gasket body is also provided with at least two fixing holes, and all the fixing holes are uniformly distributed on the gasket body in a circular array by taking the axial lead of the through hole as an axis; the lower end face of the upper elastic gasket is provided with a first cylindrical boss matched with the fixing hole, and the upper elastic gasket is sleeved in the fixing hole in a matching manner through the first cylindrical boss to realize the fixation with the upper end face of the gasket body; the upper end face of the lower elastic gasket is also provided with a second cylindrical boss matched with the fixing hole, and the lower elastic gasket is sleeved in the fixing hole through the matching of the second cylindrical boss to be fixed with the lower end face of the gasket body.

Wherein, the both ends of through-hole all are provided with the coaxial annular inner chamfer of it.

Wherein, an annular step surface coaxial with the annular inner chamfer is arranged between the annular inner chamfer and the through hole.

The inner ring of the upper elastic gasket is provided with an annular lower step matched with the annular inner chamfer and the annular step surface, and the inner aperture of the annular lower step is smaller than that of the through hole; the inner ring of the lower elastic gasket is provided with an annular upper step matched with the annular inner chamfer and the annular step surface, and the inner aperture of the annular upper step is smaller than that of the through hole.

(III) advantageous effects

Compared with the prior art, the upper end face of the utility model relatively reduces the contact area between the upper end face and the nut or the bolt in design, thereby reducing the relative friction between the gasket and the nut or the bolt, reducing the relative abrasion, and making people feel easier when screwing the nut or the bolt; the arrangement of the annular upper cambered surface not only reduces the material consumption and the production cost, but also ensures the strength of the product; the arrangement of the upper elastic gasket and the lower elastic gasket can protect the gasket, prolong the service life of the gasket, simultaneously have the functions of an elastic cushion and a flat cushion and ensure the firmness of the bolt or the nut; and adopt detachable structure between packing ring body and upper and lower elastic gasket, conveniently change the upper and lower elastic gasket after wearing and tearing.

Drawings

Fig. 1 is a schematic cross-sectional view of the structure of the gasket of the present invention.

Fig. 2 is a schematic enlarged view of the structure of the portion I in fig. 1.

Fig. 3 is a schematic enlarged view of a portion II in fig. 1.

Fig. 4 is a schematic cross-sectional view of the gasket with an elastic gasket according to the present invention.

Fig. 5 is a schematic cross-sectional view of another gasket with an elastic gasket according to the present invention.

Description of reference numerals: 1. a gasket body; 2. an upper elastic pad; 3. a lower resilient pad; 11. a through hole; 12. an annular lower plane; 13. an annular upper plane; 14. an annular upper arc surface; 15. a fixing hole; 21. Forming a hole; 22. a first cylindrical boss; 23. an annular lower step; 31. a lower hole; 32. a second cylindrical boss; 33. an annular upper step; 111. an annular inner chamfer; 112. an annular step surface; 131. annular chamfering; 132. an inner ring upper plane; 133. an outer ring upper plane.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Fig. 1 is a schematic cross-sectional view of the washer of the present invention, which mainly shows the structure of the through hole 11, the annular lower plane 12, the annular upper plane 13, the annular upper arc surface 14, etc. of the washer; fig. 2 is a schematic enlarged view of the portion I in fig. 1, and the circular chamfer 131, the inner ring upper plane 132 and the outer ring upper plane 133 at the circular upper plane 13 are highlighted; FIG. 3 is an enlarged view of the portion II in FIG. 1, which shows the annular inner chamfer 111 and the annular step surface 112 at two ends of the through hole 11; fig. 4 is a schematic cross-sectional view of a washer with an elastic gasket according to the present invention, which reflects an upper elastic gasket 2 and a lower elastic gasket 3 that are fixedly connected to each other through a cylindrical step and a fixing hole 15; fig. 5 is a schematic cross-sectional view of another gasket with an elastic gasket according to the present invention, which shows an upper elastic gasket 2 clamped by an annular lower step 23 and a lower elastic gasket 3 clamped by an annular upper step 33.

The structure of the gasket of the utility model is shown in figure 1, the gasket comprises a gasket body 1, a through hole 11 coaxial with the gasket body is arranged in the middle of the gasket body 1, and the bottom end of the gasket body 1 is an annular lower plane 12 coaxial with the gasket body; the top end of the gasket body 1 comprises an annular upper plane 13 which is positioned on the inner ring and is coaxial with the inner ring, and an annular upper cambered surface 14 which is positioned on the outer ring and is coaxial with the outer ring; the outer circle edge of the annular upper plane 13 is tangent to the inner circle edge of the annular upper cambered surface 14, and the inner circle edge of the annular upper cambered surface 14 is higher than the outer circle edge of the annular upper cambered surface. By adopting the structure, the contact area between the upper end surface of the gasket and the nut or the bolt is relatively reduced in design, so that the relative friction between the gasket and the nut or the bolt is reduced, the relative abrasion is reduced, and people can more easily twist the nut or the bolt; and the arrangement of the annular upper cambered surface not only reduces the material consumption and the production cost, but also ensures the strength of the product.

As shown in fig. 1 and fig. 2, in the present embodiment, an annular chamfer 131 is provided in the middle of the annular upper plane 13, the annular chamfer 131 divides the annular upper plane 13 into an inner ring upper plane 132 and an outer ring upper plane 133, and the inner ring upper plane 132 is higher than the outer ring upper plane 133; the inner circular edge of the circular upper arc surface 14 is tangent to the outer circular edge of the outer ring upper plane 133.

As shown in fig. 4 and 5, in the present embodiment, the gasket further includes an upper elastic pad 2 and a lower elastic pad 3; the upper elastic gasket 2 is fixedly covered on the upper end surface of the gasket body 1 in a matching way, and the middle of the upper elastic gasket 2 is also provided with an upper hole 21 which is matched and communicated with the through hole 11; the lower elastic gasket 3 is fixedly covered on the lower end surface of the gasket body 1 in a matching way, and a lower hole 31 which is matched and communicated with the through hole 11 is also formed in the middle of the lower elastic gasket 3. The utility model discloses the upper and lower elastic gasket who sets up both can play the guard action to the packing ring, improves the life of packing ring, makes this product have the function of bullet pad and flat pad simultaneously again, guarantees the firmness of bolt or nut. The detachable structure is adopted between the gasket body and the upper and lower elastic gaskets, so that the worn upper and lower elastic gaskets are convenient to replace. In addition, the upper elastic pad 2 and the lower elastic pad 3 are both made of rubber materials.

As shown in fig. 4, in this embodiment, the gasket body 1 is further provided with at least two fixing holes 15, and all the fixing holes 15 are uniformly distributed on the gasket body 1 in a circular array with the axial line of the through hole 11 as an axis; a first cylindrical boss 22 matched with the fixing hole 15 is arranged on the lower end face of the upper elastic gasket 2, and the upper elastic gasket 2 is sleeved in the fixing hole 15 in a matched mode through the first cylindrical boss 22 to realize fixing with the upper end face of the gasket body 1; the upper end face of the lower elastic gasket 3 is also provided with a second cylindrical boss 32 matched with the fixing hole 15, and the lower elastic gasket 3 is matched and sleeved in the fixing hole 15 through the second cylindrical boss 32 to be fixed with the lower end face of the gasket body 1. The utility model adopts the above structure, go up elastic gasket 2 and down elastic gasket 3 both and the fixed simple and firm again of dismouting between the packing ring body 1.

As shown in fig. 1 and 3, in the present embodiment, both ends of the through hole 11 are provided with an annular inner chamfer 111 coaxial therewith, so as to facilitate the insertion of the screw rod.

As shown in fig. 1 and 3, in the present embodiment, an annular stepped surface 112 is provided between the annular inner chamfer 111 and the through hole 11.

As shown in fig. 5, in the present embodiment, the inner ring of the upper elastic washer 2 is provided with an annular lower step 23 matching both the annular inner chamfer 111 and the annular step surface 112, and the inner diameter of the annular lower step 23 is smaller than the diameter of the through hole 11; the inner ring of the lower elastic gasket 3 is provided with an annular upper step 33 matched with the annular inner chamfer 111 and the annular step surface 112, and the inner bore diameter of the annular upper step 33 is smaller than that of the through hole 11. The utility model adopts the above structure, both can conveniently guide to install elastic gasket 2 and lower elastic gasket 3 on packing ring body 1, avoid the screw again to go up elastic gasket 2 and the wearing and tearing of elastic gasket 3 both down.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A gasket, characterized by: the gasket comprises a gasket body (1), a through hole (11) coaxial with the gasket body is formed in the middle of the gasket body (1), and the bottom end of the gasket body (1) is an annular lower plane (12) coaxial with the gasket body; the top end of the gasket body (1) comprises an annular upper plane (13) which is positioned on the inner ring and is coaxial with the inner ring, and an annular upper cambered surface (14) which is positioned on the outer ring and is coaxial with the outer ring; the excircle edge of the annular upper plane (13) is tangent to the inner circle edge of the annular upper cambered surface (14), and the inner circle edge of the annular upper cambered surface (14) is higher than the excircle edge of the annular upper cambered surface.

2. The gasket as set forth in claim 1 wherein: an annular chamfer (131) coaxial with the annular upper plane (13) is arranged in the middle of the annular upper plane (13), the annular chamfer (131) divides the annular upper plane (13) into an inner ring upper plane (132) and an outer ring upper plane (133), and the inner ring upper plane (132) is higher than the outer ring upper plane (133); the inner circle edge of the annular upper cambered surface (14) is tangent to the outer circle edge of the outer ring upper plane (133).

3. The gasket as set forth in claim 1 wherein: the gasket also comprises an upper elastic gasket (2) and a lower elastic gasket (3); the upper elastic gasket (2) is fixedly covered on the upper end surface of the gasket body (1) in a matching way, and an upper hole (21) which is matched and communicated with the through hole (11) is also formed in the middle of the upper elastic gasket (2); the lower elastic gasket (3) is fixedly covered on the lower end face of the gasket body (1) in a matching manner, and a lower hole (31) which is matched and communicated with the through hole (11) is also formed in the middle of the lower elastic gasket (3).

4. The gasket as set forth in claim 3 wherein: the gasket body (1) is also provided with at least two fixing holes (15), and all the fixing holes (15) are uniformly distributed on the gasket body (1) in a circular array by taking the axial lead of the through hole (11) as an axis; a first cylindrical boss (22) matched with the fixing hole (15) is arranged on the lower end face of the upper elastic gasket (2), and the upper elastic gasket (2) is sleeved in the fixing hole (15) in a matched mode through the first cylindrical boss (22) to be fixed with the upper end face of the gasket body (1); the upper end face of the lower elastic gasket (3) is also provided with a second cylindrical boss (32) matched with the fixing hole (15), and the lower elastic gasket (3) is matched and sleeved in the fixing hole (15) through the second cylindrical boss (32) to be fixed with the lower end face of the gasket body (1).

5. The gasket as set forth in claim 3 wherein: and both ends of the through hole (11) are provided with annular inner chamfers (111) which are coaxial with the through hole.

6. The gasket as set forth in claim 5 wherein: an annular step surface (112) coaxial with the annular inner chamfer (111) is arranged between the annular inner chamfer and the through hole (11).

7. The gasket as set forth in claim 6 wherein: the inner ring of the upper elastic gasket (2) is provided with an annular lower step (23) matched with the annular inner chamfer (111) and the annular step surface (112), and the inner aperture of the annular lower step (23) is smaller than that of the through hole (11); the inner ring of the lower elastic gasket (3) is provided with an annular upper step (33) matched with the annular inner chamfer (111) and the annular step surface (112), and the inner aperture of the annular upper step (33) is smaller than that of the through hole (11).