VDA connector
By using a star-shaped seal ring and internal and external lubricant storage spaces in the VDA connector, combined with a limiting structure, the problems of easy aging and leakage of O-ring seals are solved, achieving higher sealing performance and stability, and reducing frictional resistance and production costs.
Patent Information
- Application Number
- CN202520458134.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-17
AI Technical Summary
O-rings in VDA joints are susceptible to aging, deformation, or cracking due to pressure, temperature, and media, resulting in poor sealing performance. They are also prone to leakage under frequent start-stop and high pressure conditions. During installation and disassembly, the frictional resistance is high, and the O-rings are prone to loosening or falling off.
It adopts a star-shaped sealing ring, combined with internal and external lubricating oil storage space, and features a reasonable rounded corner and reserved space design, using a limiting structure to ensure sealing performance and stability.
It improves the sealing performance of VDA connectors, reduces friction, extends service life, lowers production costs, enhances connection stability and sealing effect, and prevents leakage.
Smart Images
Figure CN223825846U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of connecting joint, specifically, relate to a VDA joint. BACKGROUND
[0002] O type sealing ring is generally used in VDA joint to ensure the sealing performance of the joint. However, some problems may occur in the use process of O type sealing ring.
[0003] Firstly, due to the material and structural design of O type sealing ring, it is easily affected by factors such as pressure, temperature and medium in the use process, which leads to aging, deformation and even rupture of the sealing ring, thereby affecting the sealing effect of the joint.
[0004] Secondly, during the installation and disassembly process of O type sealing ring, the reciprocating frequency is too high (such as frequent start and stop of automobile cooling system), which may lead to lubrication failure or insufficient surface roughness, sealing lip wear particle shedding and increased friction resistance. The O ring parting surface is located in the sealing contact area, and if the mold closing precision is insufficient and the mold parting surface has overflow residue, the sealing contact may be affected. When the system pressure exceeds the extrusion resistance of the sealing ring material or the joint gap is too large or the material is fatigued under dynamic working conditions, the sealing ring is easily extruded into the joint gap by high-pressure medium, forming local damage.
[0005] In addition, O type sealing ring may also loosen or fall off during long-term use, leading to loose sealing of the joint and leakage problems. INVENTION CONTENTS
[0006] In view of this, the utility model relates to a VDA joint, which aims to solve the above technical problems.
[0007] The utility model relates to a VDA joint, which comprises a male joint and a female joint that cooperate with each other, and further comprises:
[0008] A star X type sealing ring is arranged in the first accommodating groove of the female joint, and two sealing parts of the star X type sealing ring are sealed with the groove bottom of the first accommodating groove, and the remaining two sealing parts of the star X type sealing ring are sealed with the male joint; the star X type sealing ring is a self-lubricating star X type sealing ring, and / or the star X type sealing ring and the groove bottom of the first accommodating groove form an external lubricating oil storage space, and the star X type sealing ring and the outer wall of the male joint form an internal lubricating oil storage space, and lubricating oil is arranged in the external lubricating oil storage space and the internal lubricating oil storage space.
[0009] In some embodiments of the present application, the volume of the external lubricating oil storage space is equal to the volume of the internal lubricating oil storage space.
[0010] In some embodiments of the present application, when the star X type sealing ring is arranged in the first accommodating groove, a reserved space exists between the star X type sealing ring and the two groove walls of the first accommodating groove.
[0011] In some embodiments of the present application, the fillet radius at the parting line of the outer edge of the star X type sealing ring is 1.2 mm.
[0012] In some embodiments of the present application, the flash at the parting line of the star X type sealing ring is less than or equal to 0.15 mm.
[0013] In some embodiments of the present application, a limiting platform is concavely arranged in the inner wall of one end of the female connector connected with the male connector, a limiting ring is arranged on the outer wall of the male connector corresponding to one end connected with the female connector, and the limiting ring abuts against the limiting platform.
[0014] In some embodiments of the present application, a tapered section is formed between the limiting ring on the male connector and the pipe body extending into the female connector, a tapered hole is arranged at a corresponding position of the inner wall of the female connector, and the tapered section matches the tapered hole.
[0015] In some embodiments of the present application, the first accommodating groove is arranged on the side of the tapered hole in the female connector away from the connecting port of the male connector.
[0016] In some embodiments of the present application, the slot of the first accommodating groove is arranged at the parallel section of the inner wall of the female connector.
[0017] Compared with the prior art, the beneficial effects of the present application are that the combination of the VDA connector and the star X type sealing ring is the first application in the industry. By arranging the star X type sealing ring, the sealing performance of the female connector and the male connector is ensured, the sealing ring is lubricated by the inner and outer lubricating oil storage spaces, friction is reduced, service life is prolonged, and connection stability is enhanced. By equal amounts of outer lubricating oil storage space and inner lubricating oil storage space, uniform stress is ensured. The reserved space provides space for deformation of the star X type sealing ring, reduces installation damage, and the star X type sealing ring has reasonable fillet, compression amount, and filling rate design, multiple contacts with the first accommodating groove, optimized edge design, reduced damage rate, improved sealing performance, and better sealing effect. The limiting platform and the limiting ring prevent falling off and enhance connection stability. The tapered section and the tapered hole improve connection strength. The position of the first accommodating groove avoids installation interference and ensures smooth installation.
[0018] In addition, the star X type sealing ring is more economical in raw materials and lower in cost than the O type sealing ring. The star X type sealing ring is a special sealing ring with four sealing parts, and the pre-compression amount is smaller than that of the O type sealing ring, thereby reducing the friction force during assembly and against the tool, and reducing wear. Due to the special cross-sectional design, the star X type sealing ring has good stability during reciprocating motion, and avoids the possibility of torsion in the first accommodating groove. Unlike the O type sealing ring, the mold parting surface of the star X type sealing ring is away from the sealing lip, and the slight flash does not affect the sealing effect, and can effectively reduce the defect rate caused by the flash of the sealing ring. Since the pressure of the star X type sealing ring is uniformly distributed on the four sealing parts during assembly, the pressure distribution on the cross section is improved, and good sealing effect is obtained. BRIEF DESCRIPTION OF DRAWINGS
[0019] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the present application. Moreover, like reference numerals designate similar parts throughout the several views in the drawings. In the drawings:
[0020] Figure 1 A perspective view of a VDA joint according to an embodiment of the present application is shown in FIG. 1.
[0021] Figure 2 A front view of a VDA joint according to an embodiment of the present application is shown in FIG. 2.
[0022] Figure 3 A top view of a VDA joint according to an embodiment of the present application is shown in FIG. 3.
[0023] Figure 4 A sectional view of a VDA joint according to an embodiment of the present application is shown in FIG. 4. Figure 3
[0024] In the drawings: 1, male joint; 11, limiting ring; 12, tapered section; 2, female joint; 21, first accommodating groove; 22, limiting platform; 23, tapered hole; 24, parallel section; 3, star X type sealing ring; 4, clamping spring. DETAILED DESCRIPTION
[0025] The specific embodiments of the present application will be further described in detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.
[0026] In the description of the present application, it needs to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0027] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0028] In the description of the present application, it needs to be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0029] In combination with Figures 1-4 As shown, the VDA joint provided by the embodiment comprises a male joint 1 and a female joint 2 matched with each other, and the VDA joint further comprises:
[0030] A star X type sealing ring 3, at least part of the star X type sealing ring 3 is arranged in the first accommodating groove 21 of the female joint 2, and two sealing parts of the star X type sealing ring 3 are sealed with the groove bottom of the first accommodating groove 21, and the remaining two sealing parts of the star X type sealing ring 3 are sealed with the male joint 1;
[0031] The first scheme: the star X type sealing ring 3 is a self-lubricating star X type sealing ring; that is, the lubricating oil is mixed in the raw material before the sealing ring is formed. The self-lubricating star X type sealing ring does not need to add lubricating oil additionally, and can continuously release lubricating oil by itself.
[0032] The second scheme: the star X type sealing ring 3 forms an outer lubricating oil storage space with the groove bottom of the first accommodating groove 21, and the star X type sealing ring 3 forms an inner lubricating oil storage space with the outer wall of the male joint 1, and lubricating oil is arranged in the outer lubricating oil storage space and the inner lubricating oil storage space respectively.
[0033] It can be understood that the star X type sealing ring 3 can store lubricating oil in the outer lubricating oil storage space and the inner lubricating oil storage space, i.e. external lubrication is required. The self-lubricating star X type sealing ring has low cost and can avoid the influence of volatilization of externally coated lubricating oil on the installation force and sealing performance. The star X type sealing ring 3 can continuously release lubricating oil, which can ensure long-term use and avoid air drying.
[0034] It can be understood that, in the embodiment, the star X type sealing ring 3 can provide more effective sealing performance for the VDA connector, ensuring that no leakage occurs in the connected state, especially in environments with high pressure or liquid medium transmission. The outer lubricating oil storage space and the inner lubricating oil storage space are respectively formed between the star X type sealing ring 3 and the groove bottom of the first accommodating groove 21 and between the star X type sealing ring 3 and the outer wall of the male connector 1, which helps to maintain the lubrication state of the VDA connector, reduces wear and tear, and prolongs the service life of the VDA connector. While ensuring the sealing performance, the design of the lubricating oil storage space improves the maintenance convenience and service life of the connector, and the structure is compact, adaptable and easy to install.
[0035] In a specific embodiment of the present application, the volume of the outer lubricating oil storage space is equal to the volume of the inner lubricating oil storage space.
[0036] Specifically, the volume of the outer lubricating oil storage space in the embodiment can be less than or greater than the volume of the inner lubricating oil storage space.
[0037] It can be understood that the volume of the outer lubricating oil storage space and the volume of the inner lubricating oil storage space in the embodiment can be in any ratio, which depends on the design requirements and expected lubrication effect in the actual application scenario. By adjusting the volume ratio of the inner and outer lubricating oil storage spaces, the performance of the lubrication system can be optimized to ensure that the equipment is properly lubricated during operation, thereby prolonging the service life of the equipment and improving its operating efficiency.
[0038] In a specific embodiment of the present application, when the star X type sealing ring 3 is arranged in the first accommodating groove 21, there is a reserved space between the two sides of the star X type sealing ring 3 and the two groove walls of the first accommodating groove 21.
[0039] It can be understood that the reserved space in the embodiment allows the star X type sealing ring 3 to have a certain compression and expansion space during installation and use, which helps to improve the sealing effect and reduce the risk of damage to the sealing ring due to temperature changes or pressure fluctuations. In addition, the reserved space can also reduce the friction between the star X type sealing ring 3 and the groove wall, prolong the service life of the sealing ring, and make it easier to put the sealing ring into the groove during assembly, improving assembly efficiency.
[0040] In an embodiment of the present application, the radius of the fillet at the parting line of the outer edge of the star X-shaped sealing ring 3 is 1.2 mm.
[0041] It can be understood that in the embodiment, the radius of the fillet at the parting line of the outer edge of the star X-shaped sealing ring 3 is 1.2 mm, which facilitates mold processing and helps to prolong the service life of the mold.
[0042] In an embodiment of the present application, the flash at the parting line of the star X-shaped sealing ring 3 is less than or equal to 0.15 mm.
[0043] It can be understood that in the embodiment, the flash at the parting line of the star X-shaped sealing ring 3 is less than or equal to 0.15 mm, which helps to ensure the accuracy and sealing performance of the sealing ring, reduces the sealing failure or assembly difficulty caused by excessive flash, and thus improves the overall quality and service life of the product.
[0044] In an embodiment of the present application, the female connector 2 is provided with a limiting table 22 on the inner wall of one end connected with the male connector 1, the male connector 1 is provided with a limiting ring 11 on the outer wall of one end connected with the female connector 2, and the limiting ring 11 abuts against the limiting table 22.
[0045] It can be understood that in the embodiment, the limiting ring 11 of the male connector 1 abuts against the limiting table 22 of the female connector 2, which can ensure good positioning effect of the female connector 2 and the male connector 1 during connection, prevent excessive insertion or incomplete insertion, and thus improve the stability and reliability of the connection. In addition, the cooperation of the limiting table 22 and the limiting ring 11 can also prevent the misplacement or loosening of the connector caused by external force during the connection process, ensure the tightness and sealing performance of the connection, and thus improve the overall use performance and safety.
[0046] In an embodiment of the present application, the limiting ring 11 on the male connector 1 and the pipe body extending into the female connector 2 form a tapered section 12, the female connector 2 is provided with a tapered hole 23 at the corresponding position of the inner wall, and the tapered section 12 matches the tapered hole 23.
[0047] It can be understood that in the embodiment, the tapered section 12 on the male connector 1 matches the tapered hole 23 at the corresponding position of the inner wall of the female connector 2, which can realize the tight connection between the male connector 1 and the female connector 2, improve the stability and sealing performance of the connection. The cooperation of the tapered section 12 and the tapered hole 23 can effectively guide the insertion of the pipe body, reduce the deflection and damage during the insertion process, increase the contact area, and improve the pressure bearing capacity of the connection part. In addition, the tapered structure helps to disperse stress and reduce local stress concentration, thereby prolonging the service life of the connector.
[0048] In an embodiment of the present application, the first accommodating groove 21 is arranged on the side of the taper hole 23 of the female connector 2 away from the connecting end of the male connector 1.
[0049] In an embodiment of the present application, the first accommodating groove 21 is arranged on the parallel section 24 of the inner wall of the female connector 2.
[0050] Specifically, in the embodiment, the first accommodating groove 21 is arranged on the parallel section 24 of the inner wall of the female connector 2. When the male connector 1 is connected with the female connector 2, first, the pipe body at the connecting end of the male connector 1 enters the female connector 2, and the taper section 12 of the male connector 1 enters the taper hole 23 of the inner wall of the female connector 2. Then, when the limiting ring 11 of the male connector 1 abuts against the limiting platform 22 of the female connector 2, the connection of the male connector 1 and the female connector 2 is completed, at this time, the taper section 12 of the male connector 1 matches the taper hole 23 of the female connector 2, and the pipe body at the connecting end of the male connector 1 matches the parallel section 24 of the inner wall of the female connector 2. Since the first accommodating groove 21 is arranged on the parallel section 24 of the inner wall of the female connector 2, and the star X-shaped sealing ring 3 is arranged in the first accommodating groove 21 in advance, the two sealing parts of the star X-shaped sealing ring 3 are in sealing connection with the outer side wall of the male connector 1 and form an outer lubricating oil storage space, and the remaining two sealing parts of the star X-shaped sealing ring are in sealing connection with the groove bottom of the first accommodating groove 21 and form an inner lubricating oil storage space.
[0051] Further, during the assembly connection of the male connector 1 and the female connector 2, the male connector 1 contacts and compresses the star X-shaped sealing ring 3 twice, the sealing part of the two outer sealing parts of the star X-shaped sealing ring 3 located at the groove position of the first accommodating groove 21 and close to the taper hole 23 is first contacted and compressed by the outer side wall of the male connector 1, and then the sealing part of the two outer sealing parts of the star X-shaped sealing ring 3 located at the groove position of the first accommodating groove 21 and away from the taper hole 23 is contacted and compressed by the outer side wall of the male connector 1, the two contact compressions have a sequence, the compression resistance of the star X-shaped sealing ring 3 is reduced, which can effectively reduce the assembly resistance and reduce the physical consumption and complaints of workers during the assembly.
[0052] Specifically, in the embodiment, the female connector 2 is further provided with a snap spring 4. The snap spring 4 is arranged in the groove of the outer side wall of the female connector 2. When the male connector 1 is assembled and connected with the female connector 2, the snap spring 4 elastically clamps the pipe body of the male connector 1 extending into the parallel section 24 of the female connector 2, and when the snap spring 4 is pulled out of the groove, the male connector 1 is released.
[0053] Those skilled in the art can understand that the above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A VDA connector, comprising a mating male connector and a female connector, characterized in that, The VDA connector also includes: A star-shaped sealing ring, at least a portion of which is disposed within a first receiving groove of the female connector, with two sealing portions of the star-shaped sealing ring sealing the bottom of the first receiving groove, and the remaining two sealing portions of the star-shaped sealing ring sealing the male connector; the star-shaped sealing ring is a self-lubricating star-shaped sealing ring and / or the star-shaped sealing ring and the bottom of the first receiving groove form an outer lubricating oil storage space, and the star-shaped sealing ring and the outer wall of the male connector form an inner lubricating oil storage space, with lubricating oil respectively provided in the outer lubricating oil storage space and the inner lubricating oil storage space.
2. A VDA connector according to claim 1, characterized in that, The volume of the external lubricating oil storage space is equal to the volume of the internal lubricating oil storage space.
3. A VDA connector according to claim 1, characterized in that, When the star-shaped sealing ring is placed in the first receiving groove, there is a reserved space between the two sides of the star-shaped sealing ring and the two groove walls of the first receiving groove.
4. A VDA connector according to claim 1, characterized in that, The radius of the fillet at the parting line of the outer edge of the star-shaped sealing ring is 1.2 mm.
5. A VDA connector according to claim 1, characterized in that, The flash at the parting line of the star-shaped sealing ring is less than or equal to 0.15 mm.
6. A VDA connector according to claim 1, characterized in that, A limiting platform is recessed on the inner wall of one end of the female connector that is assembled with the male connector, and a limiting ring is provided on the outer wall of the male connector that is assembled with the female connector, and the limiting ring abuts against the limiting platform.
7. A VDA connector according to claim 6, characterized in that, A tapered section is formed between the limiting ring on the male connector and the tube extending into the female connector. A tapered hole is provided at a corresponding position on the inner wall of the female connector, and the tapered section matches the tapered hole.
8. A VDA connector according to claim 7, characterized in that, The first receiving groove is located in the female connector on the side of the tapered hole away from the connection port with the male connector.
9. A VDA connector according to claim 1, characterized in that, The opening of the first receiving groove is located on the parallel section of the inner wall of the female connector.