Sealing assembly, automobile lamp and automobile

Abstract

The utility model discloses a sealing assembly, an automobile lamp and an automobile, the sealing assembly comprises a first connecting structure, a second connecting structure and a sealing ring, the first connecting structure comprises a supporting part and a sealing part, and the supporting part is connected with the sealing part; the second connecting structure comprises a connecting body and a connecting step, the connecting step is connected with the end face, facing the first direction, of the connecting body, the connecting step is arranged on the side, away from the sealing part, of the connecting body and extends in the first direction, and the end face, facing the first direction, of the connecting step is a connecting face connected with the supporting part. The side wall face, facing the sealing part, of the connecting step is a main sealing face, the main sealing face and the sealing part form a mounting space, the connecting step is provided with an auxiliary sealing face, and the auxiliary sealing face obliquely extends to the connecting face from the main sealing face and forms a compensation groove with the supporting part. The sealing ring is arranged in the installation space and abuts against the main sealing face and the sealing part. Dynamic compensation of the sealing ring is achieved through geometric configuration optimization, and the sealing performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology, and in particular to sealing components, automotive lighting, and automobiles. Background Technology

[0002] The connection between the lamp housing and the heat sink of automotive lights requires a sealing ring to achieve waterproofing and sealing performance, preventing damage to the internal electrical components of the lamp. However, in existing technologies, the assembly interface between the lamp sealing ring and the lamp housing / heat sink often has the following defects: First, the deformation matching of the sealing ring is insufficient. Traditional O-rings are prone to non-uniform deformation under pressure, leading to local pressure attenuation. Second, there is a significant risk of stress concentration. A single sealing contact surface is prone to micro-crack propagation under temperature changes, accelerating seal failure. Third, it cannot adapt to the assembly tolerances and material creep of the lamp housing and heat sink. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a sealing component, an automotive lamp, and an automotive vehicle.

[0004] The solution to the technical problem of this utility model is:

[0005] Firstly, a sealing assembly is proposed, comprising:

[0006] The first connecting structure includes a support portion and a sealing portion, wherein the support portion and the sealing portion are connected to each other;

[0007] The second connecting structure includes a connecting body and a connecting step. The connecting step is connected to the end face of the connecting body facing a first direction. The connecting step is located on the side of the connecting body away from the sealing part and extends along the first direction. The end face of the connecting step facing the first direction is a connecting surface. The connecting surface is connected to the support part. The side wall of the connecting step facing the sealing part is the main sealing surface. An annular installation space is formed between the main sealing surface and the sealing part. The connecting step also has a secondary sealing surface. The secondary sealing surface extends obliquely from the main sealing surface to the connecting surface and forms a compensation groove together with the support part. The compensation groove communicates with the installation space.

[0008] A sealing ring is disposed in the installation space and abuts against the main sealing surface and the sealing part, respectively.

[0009] This invention has at least the following beneficial effects: When the sealing ring is compressed, it deforms, and the inclined secondary sealing surface guides the sealing ring radially into the compensation groove, thus improving the uniformity of the contact pressure distribution and ensuring a good seal. Furthermore, due to the combined use of the main sealing surface and the secondary sealing surface in the sealing assembly, the main sealing surface provides an initial warning seal with the sealing ring, while the secondary sealing surface compensates for assembly gaps, thereby forming a dual dynamic seal. This seal can adapt to the assembly tolerances and material creep of the first and second connecting structures, reducing the risk of stress concentration and preventing the propagation of microcracks on a single sealing contact surface under temperature changes, thus preventing accelerated seal ring failure and extending service life.

[0010] As a further improvement to the above technical solution, the secondary sealing surface and the main sealing surface are connected by a first arc surface, and the first arc surface abuts against the sealing ring.

[0011] As a further improvement to the above technical solution, the end face of the connecting body facing the first direction abuts against the sealing ring.

[0012] As a further improvement to the above technical solution, the included angle between the secondary sealing surface and the support portion is 50 degrees.

[0013] As a further improvement to the above technical solution, the depth of the compensation groove is 0.6 mm.

[0014] As a further improvement to the above technical solution, the included angle between the support part and the sealing part is greater than or equal to 90 degrees.

[0015] As a further improvement to the above technical solution, the end face of the connecting body facing the first direction and the side wall face of the connecting body facing the sealing part are connected by a second arc surface.

[0016] As a further improvement to the above technical solution, the sealing ring is made of rubber material.

[0017] Secondly, an automotive lamp is proposed, comprising a lamp housing, a heat sink, and a sealing assembly as described in any of the above technical solutions. The first connecting structure is located at the heat sink, and the second connecting structure is located at the lamp housing. Because the lamp housing and heat sink of the automotive lamp are connected by the sealing assembly, the uniformity of the contact pressure of the sealing rings can be improved, ensuring a sealing effect. Furthermore, it adapts to the assembly tolerances and material creep of the heat sink and lamp housing, effectively solving the problem of short circuits caused by condensate seepage in automotive lamps.

[0018] Thirdly, a vehicle is proposed, including automotive lighting fixtures as described in the above technical solution. Because the automotive lighting fixtures are equipped with sealing components, they possess excellent sealing and waterproofing performance, effectively solving the problem of short circuits caused by condensate seepage, and reducing the frequency and cost of vehicle repairs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the sealing assembly according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the first connection structure according to an embodiment of the present utility model;

[0022] Figure 3 This is a front view of the first connection structure according to an embodiment of the present utility model;

[0023] Figure 4 This is a front view of the second connection structure according to an embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the second connection structure according to an embodiment of the present utility model;

[0025] Figure 6 This is an assembly diagram of the first and second connecting structures according to an embodiment of the present invention.

[0026] Reference numerals: 100, first connecting structure; 110, support part; 120, sealing part; 200, second connecting structure; 210, connecting body; 211, second arc surface; 220, connecting step; 221, main sealing surface; 222, connecting surface; 223, secondary sealing surface; 224, first arc surface; 230, compensation groove; 240, installation space; 300, sealing ring. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. The various technical features of this utility model can be combined interactively without contradicting each other.

[0032] In the first aspect, this utility model embodiment proposes a sealing component that achieves dynamic compensation of the sealing ring 300 through geometric configuration optimization. It can be applied to the interface sealing between the lamp housing and the heat sink of automotive lamps, solving the defects of the sealing structure in the prior art and extending the service life of the sealing ring 300.

[0033] In this embodiment, refer to Figure 1 The sealing assembly includes a first connecting structure 100, a second connecting structure 200, and a sealing ring 300. (Refer to...) Figure 2 and Figure 3 The first connecting structure 100 includes a support portion 110 and a sealing portion 120, and the support portion 110 and the sealing portion 120 are interconnected. (See reference...) Figure 4 and Figure 5The second connection structure 200 includes a connection body 210 and a connection step 220. The connection step 220 is connected to the end face of the connection body 210 facing the first direction. The connection step 220 extends along the first direction from the side of the connection body 210 away from the sealing part 120. The end face of the connection step 220 facing the first direction is the connection surface 222, and the side wall surface of the connection step 220 facing the sealing part 120 is the main sealing surface 221. (Refer to...) Figure 6 An installation space 240 is formed between the main sealing surface 221 and the sealing part 120.

[0034] It is understood that the accompanying drawings of this utility model only show a portion of the structure of the first connecting structure 100 and the second connecting structure 200. In actual use, the connecting body 210 of the first connecting structure 100 forms a ring around the connecting body 210, the connecting step 220 is disposed on the outside of the connecting body 210 and forms a ring around it, the main sealing surface 221 is located on the inner side of the ring formed by the connecting step 220, the sealing part 120 is ring-shaped, and the installation space 240 formed between the connecting step 220 and the sealing part 120 is ring-shaped. The connecting step 220 is also provided with a secondary sealing surface 223, which is inclined. Specifically, the two ends of the secondary sealing surface 223 are connected to the main sealing surface 221 and the connecting surface 222 respectively, and the secondary sealing surface 223 extends inclinedly from the main sealing surface 221 to the connecting surface 222. When the first connecting structure 100 is connected to the second connecting structure 200, the connecting surface 222 is connected to the support part 110, and the secondary sealing surface 223 and the support part 110 together form a compensation groove 230, which is connected to the installation space 240.

[0035] It is understood that the sealing ring 300 is annular and is installed in the installation space 240. When the first connecting structure 100 and the second connecting structure 200 are connected to each other, the side of the sealing ring 300 abuts against the main sealing surface 221 and the sealing part 120 respectively, and the first connecting structure 100 and the second connecting structure 200 achieve a sealed connection through the sealing ring 300.

[0036] In this embodiment, during use, the sealing ring 300 deforms under pressure. The secondary sealing surface 223 guides the sealing ring 300 to extend radially into the compensation groove 230, thereby improving the uniformity of the contact pressure distribution of the sealing ring 300 and ensuring the sealing effect. Furthermore, due to the cooperative use of the main sealing surface 221 and the secondary sealing surface 223 in the sealing assembly, the main sealing surface 221 provides an initial warning seal between the sealing ring 300, while the secondary sealing surface 223 compensates for the assembly gap, thus forming a dual dynamic seal. This seal can adapt to the assembly tolerances and material creep of the first connecting structure 100 and the second connecting structure 200, reducing the risk of stress concentration and preventing the propagation of microcracks on a single sealing contact surface under temperature change conditions.

[0037] For example, the sealing assembly of this embodiment is applied to the sealing interface between the lamp housing and the radiator of an automotive lamp. Taking downward as the first direction, the first connecting structure 100 is disposed at the upper end of the radiator, and the second connecting structure 200 is disposed at the lower end of the lamp housing. The sealing portion 120 of the first connecting structure 100 is annular, and the support portion 110 is disposed on the outer periphery of the sealing portion 120 and connected to the lower end of the sealing portion 120. The connecting body 210 of the second connecting structure 200 is annular, and the connecting step 220 is connected to the lower end face of the connecting body 210 and located on the outer periphery of the connecting body 210. The connecting step 220 extends downward and is also annular. When the lamp housing and the radiator are connected, the sealing portion 120 is located inside the connecting body 210, and the lower end face of the connecting step 220 is connected to the upper surface of the support portion 110. The main sealing surface 221 and the outer peripheral wall of the sealing part 120 together form the installation space 240, that is, the installation space 240 is located on the outer periphery of the sealing part 120, and the sealing ring 300 is disposed in the installation space 240, that is, the sealing ring 300 is sleeved on the outer periphery of the sealing part 120 and located on the inner side of the annular shape formed by the connecting step 220.

[0038] When the lamp housing is connected to the heat sink, the sealing component of this embodiment provides excellent waterproofing and sealing performance, effectively solving the problem of short circuits caused by condensate seepage in automotive lamps. Furthermore, the sealing ring 300 in the sealing component can achieve dynamic compensation through the compensation groove 230 when under pressure, improving the uniformity of the contact pressure distribution of the sealing ring 300, avoiding localized pressure attenuation, and adapting to the assembly tolerances and material creep of the lamp housing and heat sink. It also reduces the risk of stress concentration, preventing micro-cracks in the sealing ring 300 under temperature changes, extending the service life of the sealing ring 300, and thus improving the service life of the automotive lamp.

[0039] In some embodiments, the connecting step 220 is further provided with a first arc surface 224, which is disposed between the secondary sealing surface 223 and the main sealing surface 221. The secondary sealing surface 223 and the main sealing surface 221 are connected by the first arc surface 224. When the first connecting structure 100 and the second connecting structure 200 are connected, the first arc surface 224 abuts against the sealing ring 300.

[0040] When used in automotive lighting, during the assembly of the lamp housing and the radiator, a first arc surface 224 is positioned at the connection between the main sealing surface 221 and the secondary sealing surface 223. The lamp housing applies pressure to the sealing ring 300, and the first arc surface 224 abuts against the side of the sealing ring 300, providing an initial pre-tight seal and allowing the sealing ring 300 to deform. Understandably, the presence of the first arc surface 224 prevents the sharp edges at the connection point of the main sealing surface 221 and the secondary sealing surface 223 from cutting the sealing ring 300 and causing cracks, thus affecting the sealing performance of the sealing ring 300. The first arc surface 224 effectively protects the sealing ring 300 and extends its service life.

[0041] In some embodiments, the end face of the connecting body 210 facing the first direction abuts against the sealing ring 300. Applied to automotive lighting, the connecting body 210 located at the lower end of the lamp housing abuts against the upper surface of the sealing ring 300; that is, the lower end face of the connecting body 210 located between the sealing portion 120 and the connecting step 220 abuts against the upper surface of the sealing ring 300. This further increases the contact area between the sealing ring 300 and the second connecting structure 200, improving the sealing performance between the first connecting structure 100 and the second connecting structure 200. Furthermore, the lower pad surface of the connecting body 210 can restrict the upper end of the sealing ring 300, allowing the sealing ring 300 to extend along the secondary sealing surface 223 into the compensation groove 230 during deformation, increasing the contact area between the secondary sealing surface 223 and the sealing ring 300, further improving the sealing performance of the sealing assembly.

[0042] In some embodiments, the included angle between the secondary sealing surface 223 and the support portion 110 is 50 degrees. When the sealing ring 300 is compressed, it can extend radially under the guidance of the secondary sealing surface 223. Since the included angle between the secondary sealing surface 223 and the support portion 110 is 50 degrees, the radial extension deformation effect of the sealing ring 300 is better, the uniformity of contact pressure distribution can be improved by 40%, and the provision of the compensation groove 230 reduces the contact pressure fluctuation range to ±5%.

[0043] In some embodiments, the groove depth of the compensation groove 230 is 0.6 mm. The groove depth of 0.6 mm is sufficient to compensate for the deformation of the sealing ring 300. The multi-level sealing interface formed by the lower end face of the connecting body 210, the main sealing surface 221 and the secondary sealing surface 223 can achieve self-adaptation of assembly tolerance ±0.5 mm. When applied to automotive lamps, it can adapt to the assembly tolerance and material creep of the lamp housing and the heat sink.

[0044] In some embodiments, the included angle formed between the support portion 110 and the sealing portion 120 is greater than or equal to 90 degrees. For the first connecting structure 100, setting the included angle between the support portion 110 and the sealing portion 120 to be greater than or equal to 90 degrees facilitates the fit between the side of the sealing ring 300 and the first connecting structure 100, further improving the sealing performance of the sealing assembly. When applied to automotive lamps, it further increases the contact area between the sealing ring 300 and the radiator, improving the sealing performance between the radiator and the lamp housing.

[0045] In some embodiments, the end face of the connecting body 210 facing the first direction and the side wall face of the connecting body 210 facing the sealing portion 120 are transitionally connected by a second arc surface 211. Applied to automotive lighting, the transitional connection between the lower wall face of the connecting body 210 and the annular inner wall face formed by the connecting body 210 via the second arc surface 211 avoids damage to the sealing ring 300 by the sharp point of the connection between the lower wall face of the connecting body 210 and the annular inner wall face formed by the connecting body 210, thus preventing cracks in the sealing ring 300 and further improving its service life.

[0046] In some embodiments, the sealing ring 300 is made of rubber. It is understood that rubber material has good elasticity and waterproof properties. Under pressure, the sealing ring 300 can extend along the secondary sealing surface 223 and enter the compensation groove 230. Through its close contact with the secondary sealing surface 223, the main sealing surface 221, the lower end face of the connecting structure, the outer wall surface of the sealing part 120, and the upper wall surface of the support part 110, the connection between the first connecting structure 100 and the second connecting structure 200 can be achieved. It also adapts to the assembly tolerances and material creep of the first connecting structure 100 and the second connecting structure 200, ensuring the sealing and waterproof performance at the connection between the two structures.

[0047] Secondly, this utility model provides an automotive lamp, which includes a lamp housing, a radiator, and a sealing assembly as described in any of the embodiments of the first aspect. The first connecting structure 100 of the sealing assembly is disposed at the radiator, and the second connecting structure 200 is disposed at the lamp housing. The radiator and the lamp housing are sealed together by the first connecting structure 100, the second connecting structure 200, and the sealing ring 300.

[0048] In this embodiment, the first connecting structure 100 is located at the upper end of the radiator, and the second connecting structure 200 is located at the lower end of the lamp housing. The connecting step 220 at the lower end of the lamp housing is connected to the support portion 110 located on the outer periphery of the radiator, and the sealing portion 120 is located on the inner side of the annular shape formed by the connecting body 210. When the lamp housing is connected to the radiator, due to the presence of the sealing assembly, the sealing ring 300 in the sealing assembly deforms under pressure and extends along the secondary sealing surface 223 into the compensation groove 230, achieving dynamic compensation. The uniformity of the contact pressure distribution of the sealing ring 300 is improved, avoiding local sealing pressure attenuation. It can also adapt to the assembly tolerance and material creep of the lamp housing and the radiator, reduce the risk of stress concentration, prevent the sealing ring 300 from developing micro-cracks under temperature change conditions, improve the service life of the automotive lamp, and achieve good waterproof performance. This effectively solves the problem of short circuit caused by condensate seeping into the connection gap between the lamp housing and the radiator.

[0049] Thirdly, this utility model embodiment provides a car having automotive lighting fixtures as described in any of the embodiments of the second aspect. It is understood that, because the automotive lighting fixtures are equipped with sealing components, they have good sealing performance, effectively solving the problem of short circuits caused by condensate seeping into the connection gap between the lamp housing and the radiator, and reducing the frequency of car repairs.

[0050] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A sealing assembly, characterized in that, include: The first connecting structure includes a support portion and a sealing portion, wherein the support portion and the sealing portion are connected to each other; The second connecting structure includes a connecting body and a connecting step. The connecting step is connected to the end face of the connecting body facing a first direction. The connecting step is located on the side of the connecting body away from the sealing part and extends along the first direction. The end face of the connecting step facing the first direction is a connecting surface. The connecting surface is connected to the support part. The side wall of the connecting step facing the sealing part is the main sealing surface. An annular installation space is formed between the main sealing surface and the sealing part. The connecting step also has a secondary sealing surface. The secondary sealing surface extends obliquely from the main sealing surface to the connecting surface and forms a compensation groove together with the support part. The compensation groove communicates with the installation space. A sealing ring is disposed in the installation space and abuts against the main sealing surface and the sealing part, respectively.

2. The sealing assembly according to claim 1, characterized in that, The secondary sealing surface and the primary sealing surface are connected by a first arc surface, which abuts against the sealing ring.

3. The sealing assembly according to claim 1, characterized in that, The end face of the connecting body facing the first direction abuts against the sealing ring.

4. The sealing assembly according to claim 1, characterized in that, The included angle between the secondary sealing surface and the support portion is 50 degrees.

5. The sealing assembly according to claim 1, characterized in that, The depth of the compensation groove is 0.6 mm.

6. The sealing assembly according to claim 1, characterized in that, The included angle between the support portion and the sealing portion is greater than or equal to 90 degrees.

7. The sealing assembly according to claim 1, characterized in that, The end face of the connecting body facing the first direction is connected to the side wall face of the connecting body facing the sealing part by a second arc surface.

8. The sealing assembly according to claim 1, characterized in that, The sealing ring is made of rubber.

9. An automotive lamp, characterized in that, It includes a lamp housing, a heat sink, and a sealing assembly as described in any one of claims 1 to 8, wherein the first connecting structure is disposed at the heat sink and the second connecting structure is disposed at the lamp housing.

10. A car, characterized in that, Including the automotive lighting fixtures as described in claim 9.

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