Novel framework sealing gasket and engine

Abstract

The invention discloses a novel framework sealing gasket and an engine, the sealing gasket is located between two mutually independent connecting pieces, the sealing gasket comprises a gasket main body and a supporting framework connected with the gasket main body, the gasket main body comprises a sealing part abutting against the connecting pieces, the sealing part is oppositely provided with two sealing lips abutting against the two connecting pieces, and the supporting framework is connected with the gasket main body. Each sealing lip includes an extended first state and a compressed second state. The supporting framework is arranged to strengthen the positioning strength of the gasket body and assist in strengthening the rigidity of the sealing gasket, the two sealing lips are arranged on the sealing part to abut against the two connecting pieces correspondingly, the contact face between the sealing gasket and the connecting pieces is further reduced, sealing gasket bonding is avoided, and the sealing effect is improved. The first state and the second state of the sealing lip are correspondingly matched with the gap change between the two connecting pieces, so that when the connecting pieces are in the cold state and the hot state, the sealing lip can achieve gap sealing between the two connecting pieces, and the good and stable sealing effect is achieved while bonding is avoided.

Description

Technical Field

[0001] The present application belongs to the field of sealing tools, and specifically relates to a novel skeleton sealing gasket and an engine. Background Art

[0002] A sealing gasket is a material or a combination of materials that is clamped between two independent connectors. Its function is to ensure the seal between the two connectors within a predetermined service life. The sealing gasket needs to be able to seal the joint surface between the two connectors, be impermeable and non-corrosive to the sealing medium, and be able to withstand the effects of temperature and pressure.

[0003] Due to the material of the existing sealing gasket and the material of the two connecting parts, the gap between the two connecting parts will change in both cold and hot states, which can easily cause a loose seal. In the prior art, rubber material is used as the sealing gasket, and its elastic deformation is used to overcome the gap change. However, there is no positioning skeleton when the rubber is installed. On the one hand, it makes it difficult to position it during assembly, and there is a risk of oil leakage in subsequent use. On the other hand, due to its large contact surface, it is easy to bond after long-term use, which will cause damage to the seal during disassembly and assembly, requiring multiple replacements, increasing the cost of use. If the part bonded to the connecting part is not removed, the secondary assembly will be loose. If the bonded part is removed, the disassembly and assembly efficiency will be seriously affected due to the inconvenience of operation. Summary of the invention

[0004] The present application provides a novel skeleton sealing gasket and engine, which solve the bonding problem of the existing sealing gaskets due to low structural strength, easy displacement and large contact area during use.

[0005] The technical solution adopted in this application is:

[0006] A new type of skeleton sealing gasket, which is located between two independent connecting parts. The sealing gasket includes a gasket body and a supporting skeleton connected to the gasket body. The gasket body includes a sealing part abutting the connecting part. The sealing part is relatively provided with two sealing lips abutting the two connecting parts, and each of the sealing lips includes a first state of extension and a second state of compression.

[0007] Preferably, the gasket body extends inward from the sealing lip to form a neck portion, and the diameter of the neck portion gradually decreases along the extending direction, and the support frame at least passes through a portion of the neck portion.

[0008] Preferably, the sealing portion is provided with an oil groove, and the sealing lip is formed between two oil grooves.

[0009] Preferably, the gasket body is provided with a plurality of sealing lips at intervals, the sealing portion is V-shaped and concave to form the oil groove, and when the sealing lip is in the second state, the top of the sealing lip is flush with the top of the oil groove.

[0010] Preferably, one end of the support frame is located in the gasket body, and the other end is provided with a limiting fin, and the limiting fin is connected to at least one of the connecting members.

[0011] Preferably, the support frame is arranged along the inner circumference of the sealing gasket, and the limiting fins are arranged at intervals along the circumference of the support frame.

[0012] Preferably, the limiting fin comprises a positioning section connected to the supporting frame and a bending section extending along the positioning section, and the angle between the bending section and the positioning section is less than 90°.

[0013] Preferably, the gasket body and the supporting frame, and / or the supporting frame and the limiting fin are integrally formed.

[0014] An engine comprises a cylinder head and a camshaft housing, wherein a sealing gasket as described in any one of the above items is arranged between the cylinder head and the camshaft housing.

[0015] Preferably, the diameter D of the sealing portion is ≥7 mm, and the distance d between the end of the supporting skeleton located in the gasket body and the center of the sealing portion is in the range of (0-1.5)D / 2.

[0016] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0017] (1) This solution strengthens the positioning strength of the gasket body by setting a support skeleton, and assists in strengthening the rigidity of the sealing gasket, so that the sealing gasket has a sealing part that realizes the elastic sealing effect and has better supporting strength, which avoids unstable positioning and displacement due to low structural strength during deformation. Compared with existing sealing gaskets, it has a small contact surface and low assembly pressure, which is beneficial to reduce the impact of the sealing gasket on other assembly parts. By setting two sealing lips in the sealing part to abut against the two connecting parts respectively, the contact surface between the sealing gasket and the connecting part is further reduced to avoid the sealing gasket from sticking. The first state and the second state of the sealing lip correspond to the change in the gap between the two connecting parts, so that when the connecting part is in both the cold state and the hot state, the sealing lip can achieve the gap sealing between the two connecting parts, and achieve a good and stable sealing effect while avoiding adhesion.

[0018] (2) The necking portion is combined with the sealing portion so that the cross-section of the gasket body is in the shape of a water drop. The support frame passes through at least a portion of the necking portion, and one end of the support frame is located in the necking portion or passes through the necking portion and is located in the sealing portion. This ensures that the sealing lip of the sealing portion has a sealing effect on the connector and that the connection between the sealing portion and the support frame is stable, thereby achieving shaping and installation positioning of the sealing gasket.

[0019] (3) By providing an oil groove in the sealing part, and the oil groove is located on both sides of the sealing lip, on the one hand, the opening of the oil groove can provide a deformation space for the sealing lip in the middle, so that when the gap changes, the sealing lip can deform accordingly to achieve stable sealing; on the other hand, the bottom of the groove can store part of the lubricating oil, thereby enhancing the protection of the sealing gasket.

[0020] (4) Multiple sealing lips of the gasket body are used to achieve multiple abutment seals on the two connectors. Two V-shaped oil grooves sandwich a sealing lip in the middle. The oil groove and the sealing lip are combined to form a W-shaped sealing structure. In the second state, the sealing lip is compressed by pressure to be parallel to the top of the oil groove. That is, at this time, the top of the sealing lip and the top of the oil groove are in abutment with the connector, thereby forming multiple seals and still maintaining a small contact area to enhance the sealing effect.

[0021] (5) By setting a limiting fin for installation, it is convenient to determine the installation position of the gasket body, and the position of the gasket body is limited after the limiting fin is connected to the connecting piece. Therefore, during the operation of the device, the gasket body is positioned by the limiting fin and the supporting frame to avoid displacement of the gasket body due to vibration and friction, which is beneficial to ensure the stable abutment between the sealing part and the two connecting pieces, and achieve a good sealing effect on the two connecting pieces. It is also convenient for positioning and installation. Since the sealing gasket achieves the abutment sealing effect through the sealing part of the gasket body, compared with the existing sealing gasket, its contact surface is small and the assembly pressure is small, which is beneficial to reduce the influence of the sealing gasket on other assembly parts. The limiting fin provides the sealing gasket with sufficient contact strength, thereby effectively avoiding adhesion caused by large-area sealing contact, reducing the loss of the sealing gasket, extending its service life, and reducing the replacement cost.

[0022] (6) By arranging the support frame circumferentially, the gasket body is supported as a whole, thereby enhancing the overall strength of the sealing gasket, and arranging a plurality of limiting fins to connect and position the sealing gasket as a whole at multiple locations, thereby enhancing the positioning stability of the sealing gasket as a whole and avoiding vibration deviation, thereby achieving a good sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 This is a schematic structural diagram of a sealing gasket in one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the working state of the limiting fin in one embodiment of the present invention;

[0026] Figure 3 is a cross-sectional schematic diagram of a sealing gasket in one embodiment of the present invention;

[0027] Figure 4 It is a schematic diagram of the assembly of a sealing gasket in one embodiment of the present invention;

[0028] Figure 5 FIG. 1 is a schematic diagram of the assembly of a sealing gasket at another angle in an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 1-sealing gasket, 11-gasket body, 110-sealing part, 111-shrinkage part, 112-sealing lip, 113-oil groove, 12-support frame, 13-limiting fin, 131-positioning section, 132-bending section, 14-cylinder head, 15-camshaft housing. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0033] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0036] The present application provides a novel skeleton sealing gasket, such as Figures 1 to 5 As shown, the sealing gasket 1 is located between two independent connecting members, and the sealing gasket 1 includes a gasket body 11 and a supporting frame 12 connected to the gasket body 11, the gasket body 11 includes a sealing portion 110 abutting the connecting member, the sealing portion 110 is relatively provided with two sealing lips 112 abutting the two connecting members, and each sealing lip 112 includes a first state of extension and a second state of compression.

[0037] This solution strengthens the positioning strength of the gasket body 11 by setting a support skeleton 12, and assists in strengthening the rigidity of the sealing gasket 1, so that the sealing gasket 1 has a sealing portion 110 that realizes the elastic sealing effect and has better supporting strength, avoiding unstable positioning and displacement due to low structural strength during deformation. Compared with the existing sealing gasket 1, its contact surface is small and the assembly pressure is small, which is conducive to reducing the impact of the sealing gasket 1 on other assembly parts. By setting two sealing lips 112 on the sealing portion 110 to abut against the two connecting parts accordingly, the contact surface between the sealing gasket 1 and the connecting parts is further reduced to avoid the sealing gasket 1 from being bonded. The first state and the second state of the sealing lip 112 correspond to the change in the gap between the two connecting parts, so that when the connecting parts are in both cold and hot states, the sealing lip 112 can achieve the gap sealing between the two connecting parts, and achieve a good and stable sealing effect while avoiding bonding.

[0038] Furthermore, if Figure 3 As shown, the gasket body 11 extends inward from the sealing lip 112 to form a neck portion 111 , and the diameter of the neck portion 111 gradually decreases along the extending direction, and the support frame 12 passes through at least a portion of the neck portion 111 .

[0039] The necking portion 111 is combined with the sealing portion 110 so that the cross-section of the gasket body 11 is in the shape of a water drop. The supporting frame 12 passes through at least a portion of the necking portion 111, and one end of the supporting frame 12 is located in the necking portion 111 or passes through the necking portion 111 and is located in the sealing portion 110. This ensures that the sealing lip 112 of the sealing portion 110 has a sealing effect on the connector and that the connection between the sealing portion 110 and the supporting frame 12 is stable, thereby achieving shaping and installation positioning of the sealing gasket 1.

[0040] As an implementation method under this embodiment, Figure 3 As shown, the sealing portion 110 is provided with an oil groove 113 , and a sealing lip 112 is formed between two oil grooves 113 .

[0041] By providing an oil groove 113 in the sealing portion 110, and the oil groove 113 is located on both sides of the sealing lip 112, on the one hand, the opening of the oil groove 113 can provide a deformation space for the middle sealing lip 112, so that when the gap changes, the sealing lip 112 can deform accordingly to achieve stable sealing, and on the other hand, the bottom of the groove can store part of the lubricating oil, thereby enhancing the protection of the sealing gasket 1.

[0042] Preferably, the gasket body 11 is provided with a plurality of sealing lips 112 at intervals, the sealing portion 110 is V-shaped and concave to form an oil groove 113 , and the top of the sealing lip 112 is flush with the top of the oil groove 113 when in the second state.

[0043] Multiple sealing lips 112 of the gasket body 11 are used to achieve multiple abutment seals on the two connectors. Two V-shaped oil grooves 113 sandwich one sealing lip 112 in the middle. The oil groove 113 and the sealing lip 112 are combined to form a W-shaped sealing structure. In the second state, the sealing lip 112 is compressed by pressure to be parallel to the top of the oil groove 113, that is, at this time, the top of the sealing lip 112 and the top of the oil groove 113 are both in abutment with the connector, thereby forming multiple seals and still maintaining a small contact area to enhance the sealing effect.

[0044] It should be noted that when the sealing lip 112 is flush with the oil groove 113 , the sealing lip 112 may be pressed down to just reach the highest point of the oil groove 113 , or the sealing lip 112 and the oil groove 113 may be subjected to pressure at the same time and undergo elastic deformation.

[0045] In one embodiment, if Figures 1 to 3As shown, one end of the support frame 12 is located in the gasket body 11, and the other end is provided with a limiting fin 13, and the limiting fin 13 is connected to at least one of the connecting members.

[0046] The limiting fins 13 provide the sealing gasket 1 with sufficient contact strength, thereby effectively avoiding adhesion caused by large-area sealing contact, reducing the loss of the sealing gasket 1, extending its service life, and reducing the replacement cost. At the same time, the gasket body 11 cooperates with the limiting fins 13 to facilitate the determination of the installation position of the gasket body 11, and the limiting fins 13 are connected to the connector to achieve the position limitation of the gasket body 11, so that during the operation of the device, the gasket body 11 is positioned by the limiting fins 13 and the supporting frame 12 to avoid displacement of the gasket body 11 due to vibration and friction, which is conducive to ensuring the stable contact between the sealing part 110 and the two connectors, achieving a good sealing effect on the two connectors, and facilitating positioning and installation.

[0047] In one embodiment, the support frame 12 is disposed along the inner circumference of the sealing gasket 1 , and the limiting fins 13 are disposed at intervals along the circumference of the support frame 12 .

[0048] By arranging the support skeleton 12 circumferentially, the gasket body 11 is supported as a whole, thereby enhancing the overall strength of the sealing gasket 1, and a plurality of limiting fins 13 are arranged to connect and position the sealing gasket 1 as a whole at multiple locations, thereby enhancing the overall positioning stability of the sealing gasket 1 and avoiding vibration deviation, thereby achieving a good sealing effect.

[0049] It is understandable that if Figure 1 , Figure 2 as well as Figure 4 , Figure 5 As shown, the circumferentially arranged support frame 12 is for the annular sealing gasket 1 . If the sealing gasket 1 is in other shapes, the support frame 12 can be arranged according to the shape of the sealing gasket 1 .

[0050] In one embodiment, if Figure 2 , Figure 5 As shown, the limiting fin 13 includes a positioning section 131 connected to the supporting frame 12 and a bending section 132 extending along the positioning section 131 , and the angle between the bending section 132 and the positioning section 131 is less than 90°.

[0051] In this embodiment, the limiting fin 13 is connected to the connecting piece through the bending section 132. The bending sections 132 of the limiting fins 13 can all be bent toward one connecting piece, or can be bent toward two connecting pieces respectively, and both can achieve the positioning effect of the sealing gasket 1. The angle between the bending section 132 and the positioning section 131 is set to an acute angle, so that the connection relationship between the bending section 132 and the connecting piece is more stable.

[0052] Alternatively, the bent rear end of the bent section 132 is arranged to fit and wrap around the connecting piece, which can also achieve a good positioning effect.

[0053] Preferably, the limiting fin 13 is arranged to be bent toward the connector below the installation direction. The bending operation in this direction is more convenient and is conducive to limiting the entire sealing gasket 1 on the lower connector, which is conducive to the positioning accuracy of the sealing gasket 1.

[0054] In a preferred embodiment, the gasket body 11 and the supporting frame 12 , and / or the supporting frame 12 and the limiting fins 13 are integrally formed.

[0055] Preferably, the gasket body 11 , the supporting frame 12 and the limiting fins 13 are integrally formed, so as to improve the overall stability of the sealing gasket 1 .

[0056] This solution also includes an engine, such as Figure 4 , Figure 5 As shown, it includes a cylinder head 14 and a camshaft housing 15 , and a sealing gasket 1 as described above is arranged between the cylinder head 14 and the camshaft housing 15 .

[0057] The sealing gasket 1 is arranged between the cylinder head 14 and the camshaft housing 15, and the sealing between the cylinder head 14 and the camshaft housing 15 is achieved by the elastic deformation of the sealing part 110. The combustion in the cylinder and the moving parts such as the rocker arm and the camshaft cause greater vibration, causing the sealing gasket 1 here to be subjected to micro-friction caused by the vibration. The sealing lip 112 of the sealing gasket 1 provides elastic support for the seal, and the cooperation between the oil groove 113 and the sealing lip 112 is conducive to forming and maintaining lubrication, thereby preventing friction and adhesion, and protecting the sealing gasket 1.

[0058] Preferably, the diameter D of the sealing portion 110 is ≥7 mm, and the distance d between the end of the supporting skeleton 12 located in the gasket body 11 and the center of the sealing portion 110 is in the range of (0-1.5)D / 2.

[0059] If the distance between the support skeleton 12 and the sealing portion 110 is too large, the support effect on the gasket body 11 cannot be achieved, affecting the shaping and positioning functions of the sealing gasket 1; if the support skeleton 12 runs through the entire gasket body 11, the gasket body 11 will be too hard, which is not conducive to maintaining the overall flexibility of the gasket body 11. Therefore, in this embodiment, according to the shape of the cylinder head 14 and the camshaft housing 15.

[0060] It is understandable that when applied to the sealing of other connectors, the diameter of the sealing portion 110 and the distance between the support frame 12 and the center of the sealing portion 110 can be adjusted according to actual application requirements.

[0061] Preferably, the gasket body 11 is made of fluororubber, which can achieve good oil and temperature resistance. At the same time, the fluororubber is vulcanized to prevent it from corroding the steel structure, and its surface hardness can be processed according to actual process requirements. Its oil and temperature resistance combined with the special matching structure of the gasket body 11 and the supporting frame 12 can achieve a stable sealing effect of the sealing gasket 1.

[0062] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0063] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0064] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A novel skeleton sealing gasket, the sealing gasket (1) is located between two independent connecting parts, characterized in that: The sealing gasket (1) comprises a gasket body (11) and a supporting frame (12) connected to the gasket body (11); the gasket body (11) comprises a sealing portion (110) abutting against the connecting piece; the sealing portion (110) is provided with two sealing lips (112) abutting against two connecting pieces; each of the sealing lips (112) comprises a first state of extension and a second state of compression.

2. A novel skeleton sealing gasket according to claim 1, characterized in that: The gasket body (11) extends inward from the sealing lip (112) to form a neck portion (111), and the diameter of the neck portion (111) gradually decreases along the extension direction. The support frame (12) passes through at least a portion of the neck portion (111).

3. A novel skeleton sealing gasket according to claim 1, characterized in that: The sealing portion (110) is provided with an oil passage groove (113), and the sealing lip (112) is formed between two of the oil passage grooves (113).

4. A novel skeleton sealing gasket according to claim 3, characterized in that: The gasket body (11) is provided with a plurality of sealing lips (112) at intervals, the sealing portion (110) is V-shaped and concave to form the oil passage groove (113), and when the sealing lip (112) is in the second state, its top is flush with the top of the oil passage groove (113).

5. A novel skeleton sealing gasket according to claim 1, characterized in that: One end of the support frame (12) is located inside the gasket body (11), and the other end is provided with a limiting fin (13), and the limiting fin (13) is connected to at least one of the connecting members.

6. A novel skeleton sealing gasket according to claim 5, characterized in that: The support frame (12) is arranged along the inner circumference of the sealing gasket (1), and the limiting fins (13) are arranged at intervals along the circumference of the support frame (12).

7. A novel skeleton sealing gasket according to claim 5, characterized in that: The limiting fin (13) comprises a positioning section (131) connected to the supporting frame (12) and a bending section (132) extending along the positioning section (131), wherein the angle between the bending section (132) and the positioning section (131) is less than 90°.

8. A novel skeleton sealing gasket according to claim 5, characterized in that: The gasket body (11) and the supporting frame (12), and / or the supporting frame (12) and the limiting fin (13) are integrally formed.

9. An engine, comprising a cylinder head (14) and a camshaft housing (15), characterized in that: A sealing gasket (1) as claimed in any one of claims 1 to 8 is provided between the cylinder head (14) and the camshaft housing (15).

10. An engine according to claim 9, characterized in that: The diameter D of the sealing portion (110) is ≥7 mm, and the distance d between the end of the support frame (12) located inside the gasket body (11) and the center of the sealing portion (110) is in the range of (0-1.5)D / 2.

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