CN219733874U

CN219733874U - Mechanical seal fastener

Info

Publication number: CN219733874U
Application number: CN202321248369.5U
Authority: CN
Inventors: 陆峰; 谢梦晨
Original assignee: Pem China Co ltd
Current assignee: Pem China Co ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-09-22
Anticipated expiration: 2033-05-23

Abstract

The utility model discloses a mechanical seal fastener, comprising: a first body extending in a straight direction, the first body having a sealing unit having a gradually increasing sectional area in a direction perpendicular to an extending direction thereof; the second body is connected with one end, close to the first body, of which the cross section area is larger, of the sealing unit, the second body is provided with a flange part and a discharging unit protruding out of the flange part, and the second body is isolated from the sealing unit, so that an annular groove is formed between the sealing unit and the second body. The utility model has better sealing effect, has better anti-pushing effect because the plate is extruded into the annular groove, has better torsion resistance because the discharging unit is embedded into the plate, and further has safe and reliable connection performance.

Description

Mechanical seal fastener

Technical Field

The utility model relates to the field of fastening devices, in particular to a mechanical sealing fastener.

Background

The fastener is used as a mechanical part for fastening connection and has extremely wide application, the existing fastener, in particular to a press riveting fastener, and the plate material is mutually connected with the fastener after press riveting, but has a larger contact gap between the plate material and the fastener, so that the existing press riveting fastener does not have a sealing function and needs to be coated with sealant, and when the existing press riveting fastener is coated with sealant and then press-riveted, the torsion resistance and the thrust resistance are greatly reduced, and the performance after connection is poor.

Disclosure of Invention

In order to overcome the deficiencies in the prior art, embodiments of the present utility model provide a mechanical seal fastener that addresses one or more of the problems described above.

The embodiment of the utility model discloses: a mechanical seal fastener, comprising: a first body extending in a straight direction, the first body having a sealing unit having a gradually increasing sectional area in a direction perpendicular to an extending direction thereof; the second body is connected with one end, close to the sealing unit, of the first body, which is larger in cross section area, the second body is provided with a flange part and a discharging unit protruding out of the flange part, the discharging unit protrudes towards the sealing unit, and the second body is isolated from the sealing unit, so that an annular groove is formed between the sealing unit and the second body; the second body can be in press-riveting connection with the plate so that the discharge unit extrudes the plate into the annular groove.

Further, the annular groove is recessed inward of the first body.

Further, the annular groove has a gradually decreasing cross-sectional area radially inward of the first body.

Further, the annular groove is recessed toward the inside of the second body.

Further, the extending direction of the flange portion is perpendicular to the extending direction of the first body.

Further, the cross-sectional shape of the discharge unit in the extending direction of the first body is a flower tooth shape having an acute angle.

Further, the cross-sectional shape of the discharging unit in the extending direction of the first body is a petal shape with rounded corners.

Further, the first body includes a screw or an internal thread.

The beneficial effects of the utility model are as follows:

after being connected with the plate in a riveting mode, the whole mechanical sealing fastener has a good sealing effect, and because the plate is extruded into the annular groove, the mechanical sealing fastener has a good anti-pushing effect, and because the discharging unit is embedded into the plate, the mechanical sealing fastener has a good anti-torsion effect, so that the connection performance is safe and reliable, and in addition, sealing glue does not need to be coated in the whole use process, so that the cost is saved.

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a first embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of the first embodiment of the present utility model after riveting with a plate material;

FIG. 3 is a schematic view of a second embodiment of the present utility model;

FIG. 4 is a schematic view of a second embodiment of the present utility model riveted with a sheet material;

FIG. 5 is a schematic perspective view of a third embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of a third embodiment of the present utility model;

FIG. 7 is a schematic view of a third embodiment of the present utility model riveted with a sheet material;

fig. 8 is a schematic perspective view of a fourth embodiment of the present utility model;

FIG. 9 is a schematic cross-sectional structure of a fourth embodiment of the present utility model;

FIG. 10 is a schematic view of a fourth embodiment of the present utility model riveted with a sheet material;

reference numerals of the above drawings: 1. a first body; 11. a sealing unit; 2. a second body; 21. a flange portion; 22. a discharging unit; 23. an annular groove; 3. a sheet material.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment of the utility model provides a mechanical sealing fastener, which comprises the following components:

the first body 1, first body 1 extends along the straight line direction, first body 1 has the sealing unit 11 that increases gradually in cross-section in perpendicular to its extending direction, sealing unit 11 can be for enclosing to establish the outside conical surface of first body 1 to make in the in-process that panel 3 and mechanical seal fastener press-rivet are connected, sealing unit 11 can be even with the connecting hole on the panel 3 takes place to extrude, and then makes sealing unit 11 with have better sealed effect between the panel 3. In this embodiment, the plate 3 may be an aluminum plate, a steel plate, or a carbon steel plate, so that the plate 3 may have a better extrusion deformation effect and a better connection strength in the press riveting process, and of course, in other alternative embodiments, the plate 3 may be selected from other alternative plates 3 according to actual needs.

The second body 2, the second body 2 with first body 1 is close to the bigger one end of sealing unit 11 sectional area is connected, the second body 2 has flange portion 21 and protrusion in the row material unit 22 of flange portion 21, row material unit 22 is towards sealing unit 11 protrusion, the second body 2 with keep apart between the sealing unit 11, so that sealing unit 11 and second body 2 form ring channel 23, so that row material unit 22 can be in the pressure riveting in-process panel 3 and compare with flange portion 21 bigger extrusion force, and then make row material unit 22 will panel 3 extrudees in the ring channel 23, in this embodiment, whole mechanical seal fastener is cold heading shaping or turning is formed, thereby has higher intensity.

In this embodiment, the second body 2 can be press-riveted to the sheet metal part 3, so that the discharge unit 22 presses the sheet metal part 3 into the annular groove 23. In the process of press riveting connection of the plate 3 and the mechanical sealing fastener, the hole wall of the connecting hole on the plate 3 is firstly abutted against the sealing unit 11 and extruded with the sealing unit 11 to form a first seal; then, when the plate 3 abuts against the second body 2, the discharging unit 22 gradually extrudes the plate 3, so that part of the plate 3 is extruded into the annular groove based on fluidity of metal, a second seal is formed, and the whole mechanical seal fastener has a better anti-pushing effect relative to the plate 3, at this time, since the discharging unit 22 is embedded into the plate 3, a torsion-resistant effect is achieved between the plate 3 and the discharging unit 22, and a third seal is formed at the same time, wherein the torsion-resistant effect is an effect of avoiding relative rotation between the plate 3 and the second body 2.

By means of the structure, after the whole mechanical sealing fastener is in press riveting connection with the plate 3, the whole mechanical sealing fastener has a good sealing effect, the plate 3 is extruded into the annular groove 23, so that the mechanical sealing fastener has a good anti-pushing effect, and the discharging unit 22 is embedded into the plate 3, so that the mechanical sealing fastener has a good torsion resistance, further the connection performance is safe and reliable, and in addition, sealing glue does not need to be coated in the whole use process, so that the cost is saved.

Specifically, as shown in fig. 1 and 3, the annular groove 23 is recessed toward the inside of the first body 1. The plate 3 after riveting can be partially recessed towards the inside of the first body 1, so that the combination degree between the plate 3 and the whole mechanical sealing fastener is better, and the sealing effect between the first body 1 and the mechanical sealing fastener is better.

In a preferred embodiment, as shown in fig. 3, the annular groove 23 has a gradually decreasing cross-sectional area radially inward of the first body 1. And then can make in the process that the panel 3 imbeds annular groove 23, the part that panel 3 is located the annular groove 23 inside and the degree of combination of annular groove 23 outer wall are better, and then further promote the sealed effect when sealed of second way.

Specifically, as shown in fig. 6 and 9, the annular groove 23 is recessed toward the inside of the second body 2. The included angle between the annular groove 23 and the moving direction of the plate 3 in the press riveting process is smaller, so that the plate 3 is easier to be extruded into the annular groove 23 in the press riveting process, and the combination effect of the plate 3 and the annular groove 23 is better while the second sealing requirement is met.

Specifically, the extending direction of the flange portion 21 is perpendicular to the extending direction of the first body 1. I.e. such that the plane in which the flange portion 21 extends is perpendicular to the extending direction of the first body 1, as shown in fig. 1. And then make in the process of riveting with panel 3, flange portion 21 can give panel 3 along its direction of motion opposite effort, and then make to the extrusion effect of panel 3 better, make panel 3 more easily be extruded to in the ring channel 23, simultaneously, also make the effect that discharge unit 22 imbeds panel 3 better, make to have better antitorque effect.

In an alternative embodiment, as shown in fig. 5, the cross-sectional shape of the discharging unit 22 in the extending direction of the first body 1 is a flower tooth shape having an acute angle. Therefore, the discharging unit 22 is easier to embed into the plate 3 in the process of riveting the plate 3, and each spline is embedded into the plate 3 due to the sharp-angled spline, so that the torsional performance of the discharging unit 22 relative to the plate 3 is better.

In another alternative embodiment, as shown in fig. 8, the cross-sectional shape of the discharging unit 22 in the extending direction of the first body 1 is a petal shape having rounded corners. Therefore, in the process of being connected with the plate 3 in a riveting manner, the discharging unit 22 is not easy to cause damage such as tearing to the plate 3 due to the existence of the round corners in the process of being embedded into the plate 3, and the plate 3 can be extruded into the annular groove 23 better.

Specifically, the first body 1 includes a screw or an internal thread, that is, in this embodiment, when the first body 1 includes a screw, the whole mechanical seal fastener is a bolt, and when the first body 1 includes an internal thread, the whole mechanical seal fastener is a nut, that is, when the whole mechanical seal fastener is a bolt or a nut, the whole mechanical seal fastener can be in press-riveting connection with the plate 3, and three sealing effects are achieved. In a preferred embodiment, the mechanical sealing fastener of the first body 1 is a screw rod and is in press-riveting connection with the plate 3, and meanwhile, the mechanical sealing fastener of the first body 1 is an internal thread and is in press-riveting connection with the plate 3, so that the screw rod is in press-riveting connection with the internal thread, and further, the two plates 3 are connected.

The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.

Claims

1. A mechanical seal fastener, comprising:

a first body extending in a straight direction, the first body having a sealing unit having a gradually increasing sectional area in a direction perpendicular to an extending direction thereof;

the second body is connected with one end, close to the sealing unit, of the first body, which is larger in cross section area, the second body is provided with a flange part and a discharging unit protruding out of the flange part, the discharging unit protrudes towards the sealing unit, and the second body is isolated from the sealing unit, so that an annular groove is formed between the sealing unit and the second body;

the second body can be in press-riveting connection with the plate so that the discharge unit extrudes the plate into the annular groove.

2. The mechanical seal fastener of claim 1, wherein said annular groove is recessed inwardly of said first body.

3. The mechanical seal fastener of claim 2, wherein said annular groove tapers in cross-sectional area radially inward of said first body.

4. The mechanical seal fastener of claim 1, wherein said annular groove is recessed inwardly of said second body.

5. The mechanical seal fastener of claim 1, wherein the direction of extension of the flange portion is perpendicular to the direction of extension of the first body.

6. The mechanical seal fastener according to claim 1, wherein a cross-sectional shape of the discharge unit in the first body extending direction is a flower tooth shape having an acute angle.

7. The mechanical seal fastener according to claim 1, wherein a cross-sectional shape of the discharge unit in the first body extending direction is a petal shape having rounded corners.

8. The mechanical seal fastener of claim 1, wherein the first body comprises a screw or internal thread.