Exhaust flange gasket with clamping jaw structure

Abstract

The utility model discloses an exhaust flange gasket with a clamping jaw structure. The exhaust flange gasket comprises a gasket body, the two ends of the long axis of the gasket body protrude outwards to form wing parts. Bolt mounting holes are formed in the wing parts; the clamping jaw structure is characterized in that a clamping jaw structure is arranged in the bolt mounting hole, and the clamping jaw structure is in contact with a bolt in the bolt mounting hole. According to the exhaust flange gasket, the clamping jaw structures are arranged in the bolt mounting holes, the clamping jaw structures make contact with the maximum outer ring of the bolt through the arc surfaces to form limiting fit, mounting of the bolt is not affected, the bolt can be restrained through a circle formed by the clamping jaw structures, and the service life of the exhaust flange gasket is prolonged. Relative movement between the bolt and the gasket is reduced or avoided, and the situation that the bolt falls off in the using process is reduced or avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing elements, in particular to an exhaust flange gasket with a claw structure. Background Art

[0002] In the prior art, automobile exhaust flange gaskets generally have bolt mounting holes on their two wings and are connected by bolts. At present, in order to achieve the installation of bolts, the hole size of the bolt mounting holes on both sides of the exhaust flange gasket needs to be larger than the maximum outer diameter of the bolt, that is, the bolt and the bolt mounting hole are clearance-matched. Some exhaust flange gaskets even have oblong holes as bolt mounting holes. This design adjusts the installation position of the exhaust flange gasket to make it more universal. However, an overly large mounting hole will cause dislocation and shaking between the exhaust flange gasket and the bolt during actual use, thereby creating a risk of falling off. The exhaust flange gasket in the prior art does not have any anti-fall-off design, so there is a risk of falling off during transportation.

[0003] Therefore, based on the above technical problems, technicians in this field urgently need to develop an exhaust flange gasket with a claw structure. Utility Model Content

[0004] The purpose of the utility model is to provide an exhaust flange gasket with a claw structure, which utilizes the claw structure in the bolt mounting hole to form abutment with the bolt and restrict the displacement of the bolt relative to the gasket, thereby reducing or eliminating shaking and solving the risk of falling off.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model discloses an exhaust flange gasket with a claw structure, the gasket comprising:

[0007] Gasket body;

[0008] Both ends of the long axis of the gasket body protrude outward to form wings;

[0009] The wing portion is provided with a bolt mounting hole;

[0010] A claw structure is arranged in the bolt installation hole, and the claw structure contacts the bolt in the bolt installation hole.

[0011] Furthermore, the opening size of the bolt mounting hole is larger than the maximum outer diameter of the bolt;

[0012] The claw structure includes a plurality of claws, the space formed between the plurality of claws is the bolt installation space, and the diameter of the circle surrounded by the plurality of claws is equal to the maximum outer diameter of the bolt.

[0013] Further, the claw structure includes three claws;

[0014] The three claws are arranged at intervals along the inner circle of the bolt mounting hole;

[0015] When the bolt is installed in the bolt installation hole, the claw contacts the outer ring of the bolt.

[0016] Further, the claw structure includes two claws;

[0017] The two claws are symmetrically arranged relative to the long axis of the gasket body;

[0018] When the bolt is installed in the bolt installation hole, the claw contacts the outer ring of the bolt.

[0019] Furthermore, the claw is configured to have a structure in which at least the position in contact with the outer circumference of the bolt is an arc surface.

[0020] Furthermore, the claw is configured as a semicircular protrusion protruding from the inner circle of the bolt mounting hole.

[0021] Furthermore, the claw is configured as a rectangular protrusion protruding from the inner circle of the bolt mounting hole, and the end of the rectangular protrusion in contact with the bolt is an arc end.

[0022] In the above technical solution, the exhaust flange gasket with a claw structure provided by the utility model has the following beneficial effects:

[0023] The exhaust flange gasket of the utility model is provided with a claw structure in the bolt mounting hole. The claw structure utilizes the arc surface to contact the maximum outer circle of the bolt to form a limit fit without affecting the installation of the bolt. The circle formed by the claw structure can also restrain the bolt, reduce or avoid the relative movement between the bolt and the gasket, and reduce or avoid falling off during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 A schematic diagram of a structure in which three semicircular raised claws are arranged in a bolt mounting hole of an exhaust flange gasket with a claw structure provided by an embodiment of the utility model;

[0026] Figure 2An enlarged view of the structure of three semicircular raised claws arranged in the bolt mounting hole of the exhaust flange gasket with a claw structure provided by an embodiment of the utility model;

[0027] Figure 3 A schematic diagram of a structure in which three rectangular claws with arc surfaces are arranged in a bolt mounting hole of an exhaust flange gasket with a claw structure provided by an embodiment of the utility model;

[0028] Figure 4 An enlarged view of the structure of three rectangular claws with arc surfaces arranged in the bolt mounting hole of the exhaust flange gasket with a claw structure provided in an embodiment of the utility model;

[0029] Figure 5 A schematic diagram of a structure in which two semicircular raised claws are arranged in a bolt mounting hole of an exhaust flange gasket with a claw structure provided by an embodiment of the utility model;

[0030] Figure 6 An enlarged view of the structure of two semicircular raised claws arranged in the bolt mounting hole of the exhaust flange gasket with a claw structure provided by an embodiment of the utility model;

[0031] Figure 7 A schematic diagram of a structure in which two rectangular claws with arc surfaces are arranged in a bolt mounting hole of an exhaust flange gasket with a claw structure provided in an embodiment of the utility model;

[0032] Figure 8 An enlarged view of the structure of two rectangular claws with arc surfaces arranged in the bolt mounting hole of the exhaust flange gasket with a claw structure provided in an embodiment of the utility model;

[0033] Fig. 9 A structural cross-sectional view of the exhaust flange gasket with a claw structure and a bolt in a mating state provided by an embodiment of the utility model.

[0034] Description of reference numerals:

[0035] 1. Gasket body; 2. Claw structure; 3. Bolt;

[0036] 101, wing portion; 102, bolt mounting hole;

[0037] 201. Claw. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0039] See also Figures 1 to 9 As shown;

[0040] This embodiment discloses an exhaust flange gasket with a claw structure, the gasket comprising:

[0041] Gasket body 1;

[0042] Both ends of the long axis of the gasket body 1 protrude outward to form wing portions 101;

[0043] The wing portion 101 is provided with a bolt mounting hole 102;

[0044] A claw structure 2 is provided in the bolt installation hole 102 , and the claw structure 2 contacts the bolt 3 in the bolt installation hole 102 .

[0045] Specifically, the present embodiment discloses an exhaust flange gasket having a claw structure 2 disposed in a bolt mounting hole 102. First, according to the structure of the exhaust flange gasket, the exhaust flange gasket of the present embodiment mainly includes a gasket body 1, and wing portions 101 are formed protruding outward at both ends thereof, and the wing portions 101 are the parts where the gasket body 1 is installed, so a bolt mounting hole 102 is provided in the wing portions 101. In order to reduce or eliminate the relative displacement between the bolt 3 and the gasket and reduce shaking, a claw structure 2 is protrudingly formed in the bolt mounting hole 102 of the present embodiment, and the claw structure 2 is in contact with the maximum outer periphery of the bolt 3 to constrain the bolt.

[0046] Preferably, the opening size of the bolt mounting hole 102 of this embodiment is larger than the maximum outer diameter of the bolt 3;

[0047] The claw structure 2 includes a plurality of claws 201 . The space formed between the plurality of claws 201 is a bolt installation space. The diameter of a circle surrounded by the plurality of claws 201 is equal to the maximum outer diameter of the bolt 3 .

[0048] First, this embodiment further defines the dimensions of the bolt mounting hole 102 and the bolt 3, as well as the dimension requirements of the claw 201 and the bolt 3, wherein the opening dimension of the bolt mounting hole 102 is larger than the maximum outer diameter of the bolt 3, that is, larger than the protruding portion of the thread of the bolt 3; and this embodiment constrains the bolt 3 by contacting the bolt 3 through the claw structure 2, therefore, the diameter of the circle formed by the multiple claws 201 of the claw structure 2 is equal to the maximum outer diameter of the bolt 3, which can both meet the installation requirements of the bolt 3 and prevent the bolt 3 from moving relative to the gasket body 1.

[0049] As a first embodiment, the claw structure 2 of this embodiment includes three claws 201; wherein the three claws 201 are arranged at intervals along the inner circle of the bolt mounting hole 102;

[0050] When the bolt 3 is installed in the bolt installation hole 102 , the claw 201 contacts the outer ring of the bolt 3 .

[0051] In the first embodiment, there are three claws 201, which are evenly distributed on the outer circumference of the bolt 3, and the central angle between adjacent claws 201 is 120°. The structure of the three claws 201 can be suitable for a circular bolt mounting hole 102 or an oblong bolt mounting hole 102.

[0052] As a second embodiment, the claw structure 2 of this embodiment includes two claws 201; the two claws 201 are symmetrically arranged relative to the long axis of the gasket body 1;

[0053] When the bolt 3 is installed in the bolt installation hole 102 , the claw 201 contacts the outer ring of the bolt 3 .

[0054] In the second embodiment, two claws 201 are provided, and the two claws 201 are symmetrically arranged along the long axis of the gasket body 1, and the two claws 201 are respectively located on both sides of the bolt 3 to constrain the bolt 3. However, the structure of the two claws 201 of this embodiment is only applicable to the circular bolt mounting hole 102, and is not applicable to the oblong bolt mounting hole 102.

[0055] Preferably, in order not to affect the disassembly, assembly and use of the bolt 3 and to be able to contact the bolt 3, the claw 201 of this embodiment is configured to have a circular arc surface structure at least at the position in contact with the outer periphery of the bolt 3. The circular arc surface structure is in the form of point contact with the bolt 3, and the contact and constraint of two or three points can meet the limit requirements of the bolt 3 of this embodiment.

[0056] Embodiment 1:

[0057] The first embodiment is a structure of the first claw 201 . The claw 201 of the first embodiment is configured as a semicircular protrusion protruding from the inner circle of the bolt mounting hole 102 .

[0058] The claw 201 of the first embodiment adopts a semicircular protrusion protruding from the inner circle of the bolt mounting hole 102, and the end of the semicircular protrusion is the arc surface mentioned above, which can achieve point contact with the bolt 3.

[0059] Embodiment 2:

[0060] The second embodiment is a second structure of the claw 201 . The claw 201 of the second embodiment is configured as a rectangular protrusion protruding from the inner circle of the bolt mounting hole 102 , and the end of the rectangular protrusion in contact with the bolt 3 is an arc end.

[0061] The second embodiment of the present invention is an expanded implementation method, namely, a combination of a rectangular protrusion and an arc surface. Similarly, the rectangular protrusion of the present embodiment can also be replaced with a wedge-shaped protrusion. As long as the position in contact with the bolt 3 is an arc surface, the design requirements of the present application can be met.

[0062] As an extended implementation method, the claw structure of this embodiment can also be designed as four or more claws, and they can be evenly distributed around the outer circumference of the bolt at equal intervals as required.

[0063] In the above technical solution, the exhaust flange gasket with a claw structure provided by the utility model has the following beneficial effects:

[0064] The exhaust flange gasket of the utility model is provided with a claw structure 2 in the bolt mounting hole 102. The claw structure 2 utilizes the arc surface to contact the maximum outer circle of the bolt 3 to form a limit fit, and does not affect the installation of the bolt 3. The circle formed by the claw structure 2 can also restrain the bolt 3, reduce or avoid the relative movement between the bolt 3 and the gasket, and reduce or avoid falling off during use.

[0065] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An exhaust flange gasket with a claw structure, the gasket comprising: Gasket body (1); Both ends of the long axis of the gasket body (1) protrude outward to form wing portions (101); The wing portion (101) is provided with a bolt mounting hole (102); It is characterized in that a claw structure (2) is provided in the bolt mounting hole (102), and the claw structure (2) is in contact with the bolt (3) in the bolt mounting hole (102).

2. The exhaust flange gasket with a claw structure according to claim 1, characterized in that: The opening size of the bolt mounting hole (102) is larger than the maximum outer diameter of the bolt (3); The claw structure (2) comprises a plurality of claws (201), the space formed between the plurality of claws (201) is the bolt installation space, and the diameter of the circle surrounded by the plurality of claws (201) is equal to the maximum outer diameter of the bolt (3).

3. The exhaust flange gasket with a claw structure according to claim 2, characterized in that: The claw structure (2) comprises three claws (201); The three clamping claws (201) are arranged at intervals along the inner circle of the bolt mounting hole (102); When the bolt (3) is installed in the bolt installation hole (102), the clamping claw (201) contacts the outer ring of the bolt (3).

4. The exhaust flange gasket with a claw structure according to claim 2, characterized in that: The claw structure (2) comprises two claws (201); The two claws (201) are symmetrically arranged relative to the long axis of the gasket body (1); When the bolt (3) is installed in the bolt installation hole (102), the clamping claw (201) contacts the outer ring of the bolt (3).

5. The exhaust flange gasket with a claw structure according to claim 3 or 4, characterized in that: The claw (201) is configured to have a structure in which at least the position in contact with the outer periphery of the bolt (3) is an arc surface.

6. The exhaust flange gasket with a claw structure according to claim 5, characterized in that: The claw (201) is configured as a semicircular protrusion protruding from the inner circle of the bolt mounting hole (102).

7. The exhaust flange gasket with a claw structure according to claim 5, characterized in that: The claw (201) is configured as a rectangular protrusion protruding from the inner circle of the bolt mounting hole (102), and the end of the rectangular protrusion that contacts the bolt (3) is an arc end.

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