Conical sealing washer

Abstract

The utility model relates to the technical field of fasteners, in particular to a conical sealing washer. The bolt comprises a nut and a threaded rod, the nut is fixed to the top of the threaded rod, the conical sealing washer comprises a mounting part and sealing parts, the mounting part is conical, the threaded rod can penetrate through the mounting part, and the sealing parts are selectively arranged at the bottom, the middle and the top of the mounting part. The nut can extrude the sealing piece and can abut against the bottom of the counterbore, the middle of the counterbore and the top of the counterbore respectively. Compared with the prior art, when the bolt is fastened, the nut can extrude the conical installation piece, then the sealing piece abuts against the hole wall of the counterbore, a gap between the bolt and the hole wall of the counterbore can be avoided, the sealing performance of the bolt connecting part is improved, and air leakage and liquid leakage of the bolt connecting part are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastener technical field especially relates to a conical sealing washer. BACKGROUND

[0002] The bolt is a kind of cylindrical fastener with thread, also commonly called screw. Can be directly used in mechanical equipment, can be used with nut. The traditional bolt directly adopts metal structure as a whole, when using, with nut or part directly adopts thread cooperation locking. But the traditional thread connection, the inner thread and outer thread of metal part are connected after thread connection, there is some gap, therefore, if bolt is used in some penetrating structure, if used to seal gas or liquid, it is more likely to leak gas and liquid, and external impurities and external fluid penetrate from bolt connection part.

[0003] Therefore, a conical sealing washer is needed to solve the above technical problems. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of conical sealing washers, can improve the sealing property of bolt connection part, avoid bolt connection part leakage.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A kind of conical sealing washer, bolt includes screw cap and threaded rod, the screw cap is fixed on the top of the threaded rod, the conical sealing washer includes: mounting piece and sealing piece, the mounting piece is conical, and the threaded rod can be arranged in the mounting piece, the sealing piece is selectively arranged at the bottom of the mounting piece, the middle of the mounting piece and the top of the mounting piece, the screw cap can extrude the sealing piece can be respectively with the bottom of counterbore, the middle of the counterbore and the top of the counterbore.

[0007] As a preferred technical solution of the above-mentioned one kind of conical sealing washer, the sealing piece is arranged at the bottom of the mounting piece, and the sealing piece can be simultaneously abutted with the screw cap and the hole wall of the counterbore, the top of the mounting piece is provided with a plurality of first protrusions along the circumferential direction, and the plurality of first protrusions can be abutted with the outer wall of the screw cap.

[0008] As a preferred technical solution of the above-mentioned one kind of conical sealing washer, the first protrusion is rectangular.

[0009] As a preferred technical solution of the above-mentioned one kind of conical sealing washer, the sealing piece is annular.

[0010] As a kind of preferred technical scheme of the above-mentioned conical sealing washer, the sealing piece is arranged on the top of the mounting piece, and the sealing piece can be in contact with the wall of the counterbore hole and the outer wall of the nut simultaneously, and the bottom of the mounting piece is provided with a plurality of second protrusions at intervals in the circumferential direction, and the second protrusions can be in contact with the outer wall of the nut.

[0011] As a kind of preferred technical scheme of the above-mentioned conical sealing washer, the second protrusions are triangular.

[0012] As a kind of preferred technical scheme of the above-mentioned conical sealing washer, the conical sealing washer is provided with a plurality of sealing pieces, the middle part of the mounting piece is provided with a plurality of through holes, the through holes are arranged one by one corresponding to the sealing pieces, the sealing pieces are arranged in the through holes, and the two ends of the sealing pieces are exposed at the two ends of the through holes, respectively.

[0013] As a kind of preferred technical scheme of the above-mentioned conical sealing washer, the mounting piece and the sealing piece are integrally formed.

[0014] As a kind of preferred technical scheme of the above-mentioned conical sealing washer, the mounting piece is a steel piece.

[0015] As a kind of preferred technical scheme of the above-mentioned conical sealing washer, the sealing piece is a rubber piece.

[0016] The utility model discloses beneficial effects:

[0017] The utility model provides a conical sealing washer. Bolt includes nut and threaded rod, and the nut is fixed on the top of the threaded rod, and the conical sealing washer comprises: mounting piece and sealing piece, the mounting piece is conical, and the threaded rod can be arranged in the mounting piece, and the sealing piece is selectively arranged on the bottom of the mounting piece, the middle part of the mounting piece and the top of the mounting piece, and the nut can extrude the sealing piece and be in contact with the bottom of the counterbore hole, the middle part of the counterbore hole and the top of the counterbore hole, respectively. Compared with the prior art, when the bolt is fastened, the nut can extrude the conical mounting piece, and then the sealing piece is in contact with the wall of the counterbore hole, so that the gap between the bolt and the wall of the counterbore hole can be avoided, the sealing property of the bolt connection part is improved, and the gas and liquid leakage of the bolt connection part is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the contents of the embodiments of the utility model and the drawings by the ordinary skilled in the art without creating labor.

[0019] Figure 1 A structure schematic view used by the conical sealing washer provided by the first embodiment of the present utility model;

[0020] Figure 2 A structure schematic view of the conical sealing washer provided by the first embodiment of the present utility model;

[0021] Figure 3 A structure schematic view of the conical sealing washer provided by the second embodiment of the present utility model;

[0022] Figure 4 A structure schematic view of the conical sealing washer provided by the third embodiment of the present utility model.

[0023] In the drawing:

[0024] 1, nut; 2, threaded rod; 3, mounting piece; 4, sealing piece; 5, first protrusion; 6, second protrusion; 7, through hole. DETAILED DESCRIPTION

[0025] The present utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, and not to limit the present utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present utility model are shown in the drawings, not all the structures.

[0026] In the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.

[0027] In the present utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0028] In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like, orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, 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 cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.

[0029] As shown in Figure 1 The utility model provides a conical sealing washer. The bolt comprises a nut 1 and a threaded rod 2, the nut 1 is fixed on the top of the threaded rod 2, and the conical sealing washer comprises a mounting piece 3 and a sealing piece 4.

[0030] Specifically, the mounting piece 3 is conical, and the threaded rod 2 can be arranged in the mounting piece 3, the sealing piece 4 is selectively arranged at the bottom of the mounting piece 3, the middle of the mounting piece 3 and the top of the mounting piece 3, and the nut 1 can extrude the sealing piece 4 to abut against the bottom, the middle and the top of the countersunk hole respectively. Compared with the prior art, when the bolt is fastened, the conical nut 1 can extrude the conical mounting piece 3, so that the sealing piece 4 abuts against the hole wall of the countersunk hole, the gap between the bolt and the hole wall of the countersunk hole can be avoided, the sealing property of the bolt connection part is improved, and air and liquid leakage of the bolt connection part is avoided.

[0031] Optionally, as shown in Figure 2 The sealing piece 4 is arranged at the bottom of the mounting piece 3, and the sealing piece 4 can abut against the nut 1 and the hole wall of the countersunk hole at the same time, the top of the mounting piece 3 is circumferentially spaced apart from a plurality of first protrusions 5, and the plurality of first protrusions 5 can abut against the outer wall of the nut 1. Specifically, when the bottom of the countersunk hole needs to be sealed, the sealing piece 4 is fixed at the bottom of the mounting piece 3, one end of the threaded rod 2 passes through the mounting piece 3, the bottom of the nut 1 abuts against the inner wall of the sealing piece 4, and the hole wall of the bottom of the countersunk hole abuts against the outer wall of the sealing piece 4, so that the gap between the mounting piece 3 and the hole wall of the countersunk hole and the gap between the mounting piece 3 and the nut 1 can be simultaneously blocked, the sealing property of the bolt connection part is improved, and the plurality of first protrusions 5 can be inwards retracted under the extrusion of the nut 1, so that the plurality of first protrusions 5 can extrude the nut 1, and the bolt loosening can be prevented.

[0032] Further, in the present embodiment, the first protrusion 5 is rectangular, the first protrusion 5 and the mounting piece 3 are integrally formed by a mold, the stability of the connection between the first protrusion 5 and the mounting piece 3 can be improved, and the sealing piece 4 and the mounting piece 3 are integrally formed by heat plastic, the stability of the connection between the sealing piece 4 and the mounting piece 3 can be improved. Of course, in other embodiments, the shape of the first protrusion 5 is determined according to the forming mold, which will not be described here. Further, the sealing piece 4 is a sealing ring.

[0033] Optionally, asFigure 3 As shown, the sealing element 4 is disposed on the top of the mounting element 3, and the sealing element 4 can simultaneously abut against the nut 1 and the wall of the countersunk hole. The bottom of the mounting element 3 is provided with a plurality of second protrusions 6 spaced circumferentially, and these second protrusions 6 can abut against the outer wall of the nut 1. Specifically, when the top of the countersunk hole needs to be sealed, the sealing element 4 is fixed to the top of the mounting element 3, one end of the threaded rod 2 passes through the mounting element 3, the top of the nut 1 abuts against the inner wall of the sealing element 4, and the wall of the top of the countersunk hole abuts against the outer wall of the sealing element 4. This simultaneously blocks the gap between the mounting element 3 and the wall of the countersunk hole, and the gap between the mounting element 3 and the nut 1, improving the sealing performance of the bolt connection. Furthermore, the second protrusions 6 can contract inward under the pressure of the nut 1, allowing them to press against the nut 1 and preventing the bolt from loosening.

[0034] Furthermore, in this embodiment, the second protrusion 6 is triangular, and the second protrusion 6 and the mounting part 3 are integrally formed by a mold, which can improve the stability of the connection between the first protrusion 5 and the mounting part 3. The sealing part 4 and the mounting part 3 are integrally formed by thermoplastic molding, which can improve the stability of the connection between the sealing part 4 and the mounting part 3. Of course, in some other embodiments, the shape of the second protrusion 6 is determined according to the molding mold, which will not be described in detail here. Furthermore, the sealing part 4 is a sealing ring.

[0035] Optionally, such as Figure 4 As shown, the conical sealing washer is provided with several sealing elements 4, and the middle part of the mounting part 3 is provided with several through holes 7. The several through holes 7 are provided one-to-one with several sealing elements 4. The sealing elements 4 are provided in the through holes 7, and the two ends of the sealing elements 4 are exposed at the two ends of the through holes 7 respectively. Specifically, when the middle part of the countersunk hole needs to be sealed, the middle part of the outer wall of the mounting part 3 is provided with several through holes 7 at intervals along the circumference. The sealing elements 4 are pressed into the through holes 7, and the two ends of the sealing elements 4 are exposed at the two ends of the through holes 7 respectively. One end of the threaded rod 2 passes through the mounting part 3, the middle part of the nut 1 abuts against the inner wall of the sealing element 4, and the hole wall in the middle part of the countersunk hole abuts against the outer wall of the sealing element 4. The sealing element 4 is deformed under force, so that the parts of two adjacent sealing elements 4 exposed in the through holes 7 abut against each other, thereby simultaneously blocking the gap between the mounting part 3 and the hole wall of the countersunk hole and the gap between the mounting part 3 and the nut 1, improving the sealing performance of the bolt connection.

[0036] Furthermore, the sealing element 4 and the mounting element 3 are integrally molded by thermoplastic, which can improve the stability of the connection between the sealing element 4 and the mounting element 3.

[0037] Furthermore, in this embodiment, the mounting component 3 is made of steel. Of course, in other embodiments, the mounting component 3 may also be made of materials such as copper or aluminum, depending on the application scenario.

[0038] Further, in the present embodiment, the seal 4 is a rubber member, specifically: nitrile rubber, ethylene propylene diene rubber or silicone rubber.

[0039] In addition, the above are only the preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A conical sealing gasket, a bolt comprising a nut (1) and a threaded shank (2), the nut (1) being fixed to the top of the threaded shank (2), characterized in that, The conical sealing washer comprises a mounting part (3) and a sealing part (4), the mounting part (3) is conical, the threaded rod (2) can be arranged in the mounting part (3), the sealing part (4) is arranged at the bottom, the middle and the top of the mounting part (3) selectively, the sealing part (4) can be pressed by the nut (1) and can be in contact with the bottom, the middle and the top of the counterbore hole respectively.

2. A conical sealing gasket according to claim 1, characterized in that The sealing part (4) is arranged at the bottom of the mounting part (3) and can be in contact with the nut (1) and the wall of the counterbore hole simultaneously, the top of the mounting part (3) is provided with a plurality of first protrusions (5) arranged at intervals in the circumferential direction, and the first protrusions (5) can be in contact with the outer wall of the nut (1).

3. A conical sealing gasket according to claim 2, wherein The first protrusions (5) are rectangular.

4. A tapered gasket according to claim 2, wherein The sealing part (4) is annular.

5. A tapered gasket according to claim 1, wherein The sealing part (4) is arranged at the top of the mounting part (3) and can be in contact with the nut (1) and the wall of the counterbore hole simultaneously, the bottom of the mounting part (3) is provided with a plurality of second protrusions (6) arranged at intervals in the circumferential direction, and the second protrusions (6) can be in contact with the outer wall of the nut (1).

6. A tapered gasket according to claim 5, wherein The second protrusions (6) are triangular.

7. A tapered gasket according to claim 1, wherein The conical sealing washer is provided with a plurality of sealing parts (4), the middle of the mounting part (3) is provided with a plurality of through holes (7), the through holes (7) and the sealing parts (4) are arranged one by one, the sealing parts (4) are arranged in the through holes (7) and the two ends of the sealing parts (4) are exposed outside the two ends of the through holes (7) respectively.

8. A conical sealing gasket according to any one of claims 1-7, characterized in that The mounting part (3) and the sealing part (4) are arranged integrally.

9. A conical sealing gasket according to any one of claims 1-7, characterized in that The mounting part (3) is made of steel.

10. A conical sealing gasket according to any one of claims 1-7, characterized in that The sealing part (4) is made of rubber.

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