A fixing structure for a spray joint for a vehicle

Abstract

The utility model discloses a kind of vehicle injection joint fixing structure, including main body, injection pipe, limiting block and fixed seat;Limiting block is fixed in injection pipe outer periphery;Fixed seat is sleeved in injection pipe outside and is abutted with limiting block;Main body is sleeved in limiting block outer periphery and is threadedly connected with fixed seat;Limiting block is positioned to main body, prevent main body from falling off. Only need to tighten injection joint and fixed seat in operating process, reduce the repeated operation in the assembly and maintenance process when traditional flange is fixed. The utility model can be aligned injection pipe and fasten injection joint simultaneously, vehicle injection joint can be fixed in direct screwing form, and it is strong in versatility, and assembly is good.

Description

Technical Field

[0001] This utility model belongs to the field of automotive mechanical parts technology, specifically relating to a vehicle injection connector fixing structure that can fix the vehicle injection connector by direct screw connection. Background Technology

[0002] In vehicle structures, structures that inject liquid or gaseous media are common, and injection connectors are also frequently used in both fuel-powered and new energy vehicles. How to secure these injection connectors is a crucial aspect of the development process. If the injection connector's fixing structure is designed using a traditional flange-face bolt fastening method in the initial R&D phase, then the overall vehicle development plan must include at least seven components: injection pipe, sealing ring, flange, flange seat, flange gasket, and matching bolt sets (at least two sets). If changes in boundary constraints occur during development, the design of these components needs to be re-evaluated. When data changes are involved, each component must be modified accordingly. Furthermore, at least two tightening operations (flange face fastening at least two fixing points) are required during sub-assembly assembly or component repair.

[0003] Traditional fixing structures use the flange faces at both ends of the joint as sealing surfaces and make holes in the flanges to fasten them with bolts. This fixing method is limited by both flange specifications and operating space, and there are at least two fixing points. Repeated operations are required during assembly or maintenance on the production line, resulting in low assembly efficiency.

[0004] In summary, it is necessary to develop a structure that can simultaneously align the injection pipe and fasten the injection connector. Combining the alignment and fastening of the injection pipe into a single operation can reduce the number of parts and improve R&D efficiency, as well as reduce repetitive operations in subsequent assembly or maintenance, thus reducing assembly or maintenance time. Summary of the Invention

[0005] To address the aforementioned problems in the existing technology, this utility model provides a vehicle injection connector fixing structure that can simultaneously align the injection pipe and fasten the injection connector. It can fix the vehicle injection connector by direct screw connection, offering strong versatility and good assembly.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A vehicle injection connector fixing structure includes a main body, an injection pipe, a limiting block, and a fixing seat; the limiting block is fixed to the outer periphery of the injection pipe; the fixing seat is sleeved on the outside of the injection pipe and abuts against the limiting block; the main body is sleeved on the outer periphery of the limiting block and threadedly connected to the fixing seat; the limiting block limits the main body and prevents the main body from falling off.

[0008] Furthermore, a sealing ring is provided between the main body and the limiting block.

[0009] Furthermore, the main body has a circular internal tapered thread structure, and the fixing seat has a circular external tapered thread structure.

[0010] Furthermore, the limiting block and the injection pipe are integrally formed.

[0011] Furthermore, the limiting block has a frustum structure, and the shoulder of the frustum engages with the main body to limit the position of the main body.

[0012] Furthermore, a sealing ring is provided between the frustum shoulder of the limiting block and the main body, and the bottom surface of the frustum abuts against the fixing seat.

[0013] This utility model has the following beneficial effects:

[0014] This utility model integrates the limiting block and the injection pipe into one piece, and connects the main body and the fixed seat with threads, eliminating the need for flanges, flange seats, flange gaskets, and multiple bolts required by traditional flange connections. This significantly reduces the number of parts, manufacturing costs, and assembly complexity.

[0015] The spray joint can be fixed and sealed with a single tightening operation, avoiding at least two bolt tightening operations as in the traditional method, thus improving assembly and maintenance efficiency and reducing working hours.

[0016] The main body and the fixed base adopt a tapered thread structure, which has good self-centering and sealing performance, and is suitable for different media and installation environments, with strong versatility and adaptability.

[0017] A reliable sealing effect is achieved by setting a sealing ring between the limiting block and the body, and compressing the sealing ring during tightening, making it suitable for injection systems of liquid or gas media.

[0018] The flange structure is eliminated, resulting in a more compact overall structure, making it suitable for vehicle layout environments with limited installation space.

[0019] Disassembly is simple; just loosen the main body to remove the spray nozzle, making maintenance and replacement more convenient and reducing later maintenance costs.

[0020] With its simple structure and few parts, if boundary changes occur during the vehicle development process, only a few parts need to be adjusted, which improves the speed and flexibility of R&D response. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0022] Figure 1 This is an isometric structural diagram of a vehicle injection connector fixing structure according to an embodiment of the present utility model;

[0023] Figure 2 This is a front view schematic diagram of a vehicle injection connector fixing structure according to an embodiment of the present utility model;

[0024] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the middle AA direction;

[0025] In the picture:

[0026] 1-Main body;

[0027] 2-Injection pipe;

[0028] 3-Restriction Block;

[0029] 4-Sealing ring;

[0030] 5-Fixed base. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Example

[0037] like Figures 1 to 3 As shown, this embodiment is a vehicle injection connector fixing structure, including a main body 1, an injection pipe 2, a limiting block 3, and a fixing seat 5; the limiting block 3 is fixed to the outer periphery of the injection pipe 2, the fixing seat 5 is sleeved on the outside of the injection pipe 2 and abuts against the limiting block, the main body 1 is sleeved on the outer periphery of the limiting block 3 and threadedly connected to the fixing seat 5, the limiting block 3 limits the main body 1 and prevents the main body from falling off.

[0038] Furthermore, a sealing ring is provided between the main body 1 and the limiting block 3.

[0039] Furthermore, the main body 1 has a circular internal tapered thread structure, and the fixing seat 5 has a circular external tapered thread structure.

[0040] Furthermore, the limiting block 3 and the injection pipe 2 are integrally formed.

[0041] Furthermore, the limiting block 3 is provided with a frustum structure, and the shoulder of the frustum is engaged with the main body 1 to limit the position of the main body 1.

[0042] Furthermore, a sealing ring is provided between the frustum shoulder of the limiting block 3 and the main body 1, and the bottom surface of the frustum abuts against the fixing seat 5.

[0043] Furthermore, the material of the main body 1 is selected based on the chemical properties and structural mechanics analysis of the spraying medium, and can be a commonly used metal material or composite material.

[0044] Furthermore, the injection pipe 2 is a thin tube for the flow of the injection medium, typically a thin-walled tube made of metal or composite material. The wall thickness, material, and inner diameter are determined according to the chemical properties of the injection medium and the required flow rate. The shape of the injection pipe is designed according to the requirements of the injection path. It can be a direct injection type, or, if there are directional requirements, the injection pipe can be designed as an angled pipe. In this embodiment, the injection pipe is a stainless steel pipe of the direct injection type.

[0045] Furthermore, the limiting block 3 is a component that restricts the main body from falling off. In this embodiment, the limiting block 3 is integrally formed with the spray pipe 2, and the size design of the limiting block is based on the size of the main body and the size of the fixing seat.

[0046] Furthermore, the sealing ring 4 plays a sealing role in the entire mechanism, and its material is selected according to the chemical properties of the sprayed medium.

[0047] In this embodiment, the main body 1, the injection pipe 2, the limiting block 3, and the sealing ring 4 are assembled to form an injection joint. The assembly sequence is as follows: the limiting block is assembled (or welded) onto the injection pipe, the sealing ring is installed on the outside of the limiting block, the main body is fitted onto the limiting block, and the sealing ring is pressed tightly. The fixing seat is the fixing base of the injection joint. The material is selected according to the chemical properties and structural mechanics analysis of the injection medium, and can be a commonly used metal or composite material, with the molding size matching the injection joint main body.

[0048] The assembly method in this embodiment:

[0049] First, assemble the spray connector: assemble (or weld) the limiting block onto the spray pipe, install the sealing ring on the outside of the limiting block, put the main body on the limiting block and press the sealing ring tightly.

[0050] Once all the injection connectors are assembled, the injection pipe at the end of the injection connector is inserted into the mounting port and aligned according to the required direction. The main body and the mounting port are aligned and tightened. During the tightening process, only the main body rotates while the injection pipe remains stationary (the direction is already determined). The tightening torque is determined based on the structural characteristics. During the tightening process, the sealing gasket is compressed to achieve a sealing effect. Ultimately, the purpose of simultaneously aligning the injection pipe and tightening the injection connector is achieved, thus completing the assembly of the vehicle injection connector fixing structure in this embodiment.

[0051] During operation, only the spray nozzle and the mounting base need to be tightened, reducing the repetitive operations required during assembly and maintenance when using traditional flange fixing (which requires at least two combination bolts).

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixing structure for a vehicle injection connector, characterized in that, It includes a main body, a spray pipe, a limiting block, and a fixing seat; the limiting block is fixed to the outer periphery of the spray pipe; the fixing seat is sleeved on the outside of the spray pipe and abuts against the limiting block; the main body is sleeved on the outer periphery of the limiting block and threadedly connected to the fixing seat; the limiting block limits the main body and prevents the main body from falling off.

2. The vehicle injection connector fixing structure as described in claim 1, characterized in that, A sealing ring is provided between the main body and the limiting block.

3. The vehicle injection connector fixing structure as described in claim 1, characterized in that, The main body has a circular internal tapered thread structure, and the fixing seat has a circular external tapered thread structure.

4. The vehicle injection connector fixing structure as described in claim 1, characterized in that, The limiting block and the injection pipe are integrally formed.

5. The vehicle injection connector fixing structure as described in claim 1, characterized in that, The limiting block has a frustum structure, and the shoulder of the frustum engages with the main body to limit the position of the main body.

6. The vehicle injection connector fixing structure as described in claim 5, characterized in that, A sealing ring is provided between the frustum shoulder of the limiting block and the main body, and the bottom surface of the frustum abuts against the fixing seat.

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