Automotive electronic expansion valve convenient to assemble

Abstract

The utility model provides an automotive electronic expansion valve convenient to assemble, which belongs to the technical field of automotive parts, and comprises a connecting bracket, a connecting rod, a connecting rod, a connecting rod and a connecting rod, the valve comprises a valve shell and a valve terminal, one of the valve shell and the valve terminal is provided with a connecting base, a connecting support is connected with the other one of the valve shell and the valve terminal, the connecting base is of a non-circular flange structure, and the connecting base is provided with two symmetrically-arranged avoiding parts and two symmetrically-arranged locking parts. The distance between the peripheral surfaces of the two avoiding parts is smaller than the distance between the two buckling parts, and the distance between the peripheral surfaces of the two locking parts is larger than the distance between the two buckling parts; the valve shell and the valve terminal can be rapidly installed through the connecting support, the connecting support only needs to be sleeved into an installation position in the assembling process, then the connecting support is rotated to be locked with the connecting base, and the valve shell and the valve terminal are very convenient to assemble.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of vehicle parts, and relates to a vehicle electronic expansion valve convenient to assemble. BACKGROUND

[0002] The vehicle electronic expansion valve is a key component in a vehicle air conditioner and refrigeration system, which is mainly used to accurately control the refrigerant flow entering the evaporator, so as to control the refrigerating capacity and energy efficiency ratio of the vehicle air conditioning system. The basic working principle of the electronic expansion valve is that the magnetic rotor in the actuator drives the screw rod to rotate, and the screw rod moves axially under the action of the threaded structure of the valve core, thereby driving the valve needle to move axially, and further adjusting the flow area between the valve needle and the valve seat.

[0003] The existing vehicle electronic expansion valve usually includes a coil shell (also known as a valve shell) and a valve body (valve island), which are assembled together by threaded connection. However, this connection method has some defects: since the threaded connection part may produce debris, these debris may enter the flow channel of the valve body, thereby reducing the cleanliness of the entire system. In addition, the bumping during vehicle driving may cause the threads to loosen or even fall off, thereby causing liquid leakage problems. SUMMARY

[0004] The utility model aims at the above problems existing in the prior art, and provides a vehicle electronic expansion valve convenient to assemble.

[0005] The utility model discloses the purpose can be realized through the following technical scheme: a kind of vehicle electronic expansion valve convenient to assemble, including:

[0006] Connecting support, the connecting support includes two symmetrically arranged abutting portions and two symmetrically arranged buckling portions;

[0007] Valve shell and valve island, one of the valve shell and the valve island has a connecting seat, the connecting support is connected with the other of the valve shell and the valve island, the connecting seat is provided as a non-circular flange structure, the connecting seat has two symmetrically arranged avoiding sites and two symmetrically arranged locking sites, the interval of the outer circumferential surface of two avoiding sites is less than the interval of two buckling portions, and the interval of the outer circumferential surface of two locking sites is greater than the interval of two buckling portions;

[0008] Two abutting parts are in contact with one end surface of the connecting seat, the connecting support can rotate relative to the connecting seat to a mounting position and a locking position; when the connecting support is in the mounting position, the two buckling parts are respectively located outside the two avoiding parts and are separated from the connecting seat; when the connecting support is in the locking position, the two buckling parts are respectively located outside the two locking parts and buckling the other end surface of the connecting seat.

[0009] Preferably, the outer contour of the connecting seat is elliptical or similar to an ellipse.

[0010] Preferably, the connecting seat is located at the top end of the valve island, and the connecting support is connected with the bottom end of the valve shell.

[0011] Preferably, the abutting part and the buckling part have a height difference in the axial direction of the connecting seat.

[0012] Preferably, the height difference between the abutting part and the buckling part is in interference fit with the thickness of the connecting seat.

[0013] Preferably, the abutting part and the buckling part are arranged in a staggered manner in the circumferential direction of the connecting support.

[0014] Preferably, one of the buckling part and the locking part is provided with a limiting protrusion and the other is provided with a limiting groove, and when the connecting support is in the locking position, the limiting protrusion is embedded in the limiting groove to limit the rotation of the connecting support relative to the connecting seat.

[0015] Preferably, one of the bottom of the valve shell and the connecting support is provided with a positioning column and the other is provided with a positioning hole, and the positioning column is inserted into the positioning hole to connect the connecting support with the bottom of the valve shell.

[0016] Preferably, a valve body is installed in the valve island, and the abutting part is in contact with the valve body.

[0017] Preferably, a sealing ring is installed between the valve body and the valve island, the abutting part applies a sealing pressure to the valve body to compress the sealing ring, and the sealing ring applies an elastic force to the valve body in a compressed state to push the abutting part.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] 1. The valve shell and the valve island can be quickly installed through the connecting support, and during assembly, only the connecting support needs to be sleeved into the mounting position, and then the connecting support is rotated to be locked with the connecting seat, which is very convenient.

[0020] 2、When the connecting bracket is fully rotated into place, i.e. into the locking position, the limiting protrusion is embedded in the limiting groove. This mechanism not only provides additional physical locking effect, but also effectively prevents any unintentional rotation of the connecting bracket relative to the connecting seat, enhancing the safety and stability of the entire assembly. Through the design of the limiting protrusion and the limiting groove, the risk of loosening of the components due to vibration or other external forces is greatly reduced.

[0021] 3、The abutting portion abuts against the valve body, so that the valve body is tightly attached to the sealing ring under the action of the sealing pressure, ensuring the sealing between the valve body and the valve island. Meanwhile, the sealing ring is a rubber piece, which provides a certain elastic force to the valve body in the compressed state, so that the connecting bracket is subjected to a pushing force, and the buckling portion tightly buckles the other end face of the connecting seat under the action of the elastic force, thereby tightly fixing the connecting bracket and the connecting seat together. In addition to tightly connecting the connecting bracket and the connecting seat, the sealing ring can also play a buffering role. In the actual structure, the abutting portion can not be in direct contact with the one end face of the connecting seat, and a very small gap is maintained therebetween, and the abutting portion directly abuts against the valve body. This design can buffer through the valve body and the sealing ring, i.e. the valve body and the sealing ring buffer between the valve housing and the valve island. When the vehicle bumps, the sealing ring can absorb the vibration between the valve housing and the valve island through its own elasticity, thereby protecting the expansion valve. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of the valve housing and the valve island of the utility model assembled together through the connecting bracket.

[0023] Figure 2 It is a schematic view of the abutting portion and the connecting seat abutting.

[0024] Figure 3 It is a schematic view of the buckling portion and the connecting seat buckling.

[0025] Figure 4 It is a schematic view of the connecting bracket in the installed position.

[0026] Figure 5 It is a schematic view of the connecting bracket in the locked position.

[0027] Figure 6 It is a schematic view of the connecting relationship between the connecting bracket and the connecting seat.

[0028] Figure 7 It is a structural schematic view of the connecting bracket.

[0029] In the diagram, 100 is the connecting bracket; 110 is the abutment part; 120 is the fastening part; 121 is the limiting protrusion; 130 is the positioning hole; 200 is the valve body; 210 is the positioning pin; 300 is the valve island; 400 is the connecting seat; 410 is the clearance part; 420 is the locking part; 421 is the limiting groove; 500 is the valve body; and 510 is the sealing ring. Detailed Implementation

[0030] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0031] like Figures 1 to 7 As shown, an easily assembled automotive electronic expansion valve includes: a connecting bracket 100, which includes two symmetrically arranged abutment portions 110 and two symmetrically arranged snap-fit ​​portions 120; a valve housing 200 and a valve island 300, one of which has a connecting seat 400. The connecting bracket 100 is connected to the other of the valve housing 200 and valve island 300. The connecting seat 400 is configured as a non-circular flange structure and has two symmetrically arranged clearance portions 410 and two symmetrically arranged locking portions 420. The outer peripheral surfaces of the two clearance portions 410... The spacing is less than the spacing between the two fastening parts 120, and the spacing between the outer peripheral surfaces of the two locking parts 420 is greater than the spacing between the two fastening parts 120; the two abutting parts 110 abut against one end face of the connecting seat 400, and the connecting bracket 100 can rotate relative to the connecting seat 400 to the installation position and the locking position; when the connecting bracket 100 is in the installation position, the two fastening parts 120 are located outside the two clearance parts 410 respectively and are separated from the connecting seat 400; when the connecting bracket 100 is in the locking position, the two fastening parts 120 are located outside the two locking parts 420 respectively and are fastened to the other end face of the connecting seat 400.

[0032] The valve housing 200 and valve island 300 are the two main parts of the electronic expansion valve. The valve housing 200 contains a coil and a magnetic rotor. The valve housing 200 needs to be assembled and fixed together with the valve island 300. The connecting bracket 100 is used to replace the threaded structure to fix the valve housing 200 and the valve island 300 together. That is, the valve housing 200 and the valve island 300 can be connected through the connecting bracket 100.

[0033] One of the valve housing 200 and the valve island 300 is provided with a connecting seat 400. The connecting seat 400 is similar to a flange structure, that is, the connecting seat 400 is actually similar to a disc-shaped flange structure. The outline of the connecting seat 400 is non-circular, and the transition from the clearance part 410 to the locking part 420 is smooth. This means that the diameters of the different parts of the connecting seat 400 are not equal. The part between the two clearance parts 410 is narrower (that is, the distance between the two clearance parts 410 is less than the minimum distance between the two fastening parts 120), and the part between the two locking parts 420 is wider (that is, the distance between the two locking parts 420 is greater than the minimum distance between the two fastening parts 120). This allows the two fastening parts 120 to pass over the connecting seat 400 from the narrower part (clearance part 410) and reach the wider part (locking part 420) of the connecting seat 400 by rotating the connecting bracket 100. Since the distance between the two locking parts 420 is greater than the distance between the two fastening parts 120, the two fastening parts 120 fasten the other end face of the connecting seat 400, and the two abutting parts 110 abut against one end face of the connecting seat 400. Therefore, the abutting parts 110 and the fastening parts 120 can clamp the two end faces of the connecting seat 400 together, thereby fixing the connecting bracket 100 and the connecting seat 400 together.

[0034] The connecting bracket 100 has two abutment portions 110 and two fastening portions 120. The two abutment portions 110 are symmetrically arranged about the center of the connecting bracket 100, and the two fastening portions 120 are symmetrically arranged about the center of the connecting bracket 100. Both the abutment portions 110 and the fastening portions 120 are preferably L-shaped bent structures. The abutment portions 110 are used to abut against one end face of the connecting seat 400, and the fastening portions 120 are used to fasten one end face of the connecting portion, so that the connecting bracket 100 can be locked together with the connecting seat 400.

[0035] The principle of this design is as follows: the non-circular contour of the connecting seat 400 is used to achieve the purpose of misaligned insertion and locking. The connecting bracket 100 can rotate relative to the connecting seat 400. This means that the two fastening parts 120 of the connecting bracket 100 can be aligned with the outer sides of the two clearance parts 410 first. Then the connecting bracket 100 is inserted into the connecting seat 400 until the connecting bracket 100 is in the installation position. At this time, the two fastening parts 120 are located outside the two clearance parts 410, and the two abutting parts 110 abut against one end face of the connecting seat 400. Then the connecting bracket 100 is rotated until the connecting bracket 100 is rotated to the locking position. At this time, the two fastening parts 120 are located outside the two locking parts 420 and tightly fasten the other end face of the connecting seat 400, thereby fixing the entire device.

[0036] The advantages of this design lie in its simplification of the complex installation process of traditional expansion valves, reducing the need for tools and improving installation accuracy and efficiency. Furthermore, the elimination of the threaded structure prevents the generation of debris, thus avoiding reduced cleanliness of the entire system and preventing leaks caused by vibrations.

[0037] Based on the above embodiments, the outer periphery of the connecting seat 400 is set to an elliptical or quasi-elliptical shape. It should be noted that the elliptical or quasi-elliptical design allows for a smooth transition between the clearance portion 410 and the locking portion 420. Preferably, the outer periphery of the connecting seat 400 can be a racetrack-shaped structure.

[0038] Based on the above embodiments, the connecting seat 400 is located at the top of the valve island 300, and the connecting bracket 100 is connected to the bottom of the valve housing 200.

[0039] The connecting seat 400 is located at the top of the valve island 300 and is a non-circular flange structure (a ring of disc-shaped flanges) with two clearance portions 410 and two locking portions 420. These features allow the connecting bracket 100 to smoothly mate at a specific angle and be fixed by rotation. The connecting bracket 100 is located at the bottom of the valve body 200 and is designed with symmetrically arranged abutment portions 110 and latching portions 120. The abutment portion 110 is used to contact one end face of the connecting seat 400, while the latching portion 120 is used to latch the other end face of the connecting seat 400 in the locked position.

[0040] Based on the above embodiments, there is a height difference between the abutting part 110 and the fastening part 120 in the axial direction of the connecting seat 400.

[0041] The abutment portion 110 is used to contact one end face of the connector 400. Because the abutment portion 110 has a specific height in the axial direction, it ensures that the connector bracket 100 is correctly aligned and fits against the connector 400. The latching portion 120 is responsible for the final locking operation. The latching portion 120 also has a specific height, but compared to the abutment portion 110, there is a height difference in the axial direction. This height difference is mainly to accommodate the thickness of the connector 400, allowing the latching portion 120 to correspond to the other end face of the connector 400.

[0042] Based on the above embodiments, the height difference between the abutment portion 110 and the fastening portion 120 is interference-fitted with the thickness of the connecting seat 400.

[0043] By designing the height difference between the abutment portion 110 and the latching portion 120 to match the thickness of the connector 400, it can be ensured that when the connector bracket 100 is in the locked position, the latching portion 120 tightly engages with the other end face of the connector 400, while the abutment portion 110 firmly presses against one end face of the connector 400. This interference fit makes the connection more stable and reduces the risk of loosening due to vibration or movement.

[0044] Based on the above embodiment, the abutment portion 110 and the fastening portion 120 are offset in the circumferential direction of the connecting bracket 100. The purpose of the offset design is to prevent the wall abutment portion 110 and the fastening portion 120 from interfering in the circumferential direction.

[0045] Based on the above embodiments, one of the fastening part 120 and the locking part 420 is provided with a limiting protrusion 121 and the other is provided with a limiting groove 421. When the connecting bracket 100 is in the locked position, the limiting protrusion 121 is embedded in the limiting groove 421 to restrict the connecting bracket 100 from rotating relative to the connecting seat 400.

[0046] When the connecting bracket 100 is fully rotated into its locked position, the limiting protrusion 121 fits precisely into the limiting groove 421. This mechanism not only provides an additional physical locking effect but also effectively prevents any unintentional rotation of the connecting bracket 100 relative to the connecting seat 400, enhancing the safety and stability of the entire assembly. The design of the limiting protrusion 121 and the limiting groove 421 significantly reduces the risk of component loosening due to vibration or other external forces.

[0047] like Figures 1 to 3 As shown, based on the above embodiment, one of the bottom of the valve housing 200 and the connecting bracket 100 is provided with a positioning post 210 and the other is provided with a positioning hole 130. The positioning post 210 is inserted into the positioning hole 130 to connect the connecting bracket 100 with the bottom of the valve housing 200.

[0048] The connecting bracket 100 and the valve housing 200 are connected by a positioning pin 210 and a positioning hole 130. The positioning pin 210 is inserted into the positioning hole 130, thereby fixing the connecting bracket 100 and the valve housing 200 circumferentially and radially. The valve housing 200 and the valve island 300 are axially connected by other structures (such as a screw structure), thereby fixing the valve housing 200 and the connecting bracket 100 together.

[0049] like Figures 1 to 7 As shown, based on the above embodiment, a valve body 500 is installed inside the valve island 300, and the abutting part 110 is in contact with the valve body 500.

[0050] The valve body 500 is one of the core components of the electronic expansion valve. It works with the valve needle to control the refrigerant flow. The valve body 500 is installed inside the valve island 300 and near the top. The abutment part 110 abuts against the top of the valve island 300 and the valve body 500, thereby pressing the valve body 500.

[0051] It should be noted that the valve body 500 is actually connected to the screw on the valve housing 200. That is, the valve body 500 can be regarded as being fixedly connected to the valve housing 200. During installation, the valve housing 200, the connecting bracket 100 and the valve body 500 are assembled together with the valve island 300 as a whole. The valve body 500 is first installed into the valve island 300, the connecting bracket 100 is mated with the connecting seat 400 and is in the installation position, and then the connecting bracket 100 is turned (in this example, the connecting bracket 100 is rotated 90 degrees) so that the connecting bracket 100 is in the locked position.

[0052] Based on the above embodiment, a sealing ring 510 is installed between the valve body 500 and the valve island 300. The abutment portion 110 applies a sealing pressure to the valve body 500 to compress the sealing ring 510. The sealing ring 510 applies an elastic force to the valve body 500 to push against the abutment portion 110 when it is compressed.

[0053] The abutting part 110 abuts against the valve body 500, so that the valve body 500 fits tightly against the sealing ring 510 under the sealing pressure, ensuring the sealing between the valve body 500 and the valve island 300. At the same time, the sealing ring 510 is a rubber part, which provides a certain elastic force to the valve body 500 under the compressed state, so that the connecting bracket 100 is subjected to the pushing force, and then the fastening part 120 is firmly fastened to the other end face of the connecting seat 400 under the action of the elastic force, thereby firmly fixing the connecting bracket 100 and the connecting seat 400 together.

[0054] In addition to ensuring a tight connection between the connecting bracket 100 and the connecting seat 400, the sealing ring 510 also serves as a buffer. In the actual structure, the abutment part 110 does not directly contact one end face of the connecting seat 400, maintaining a very small gap between them. The abutment part 110 directly abuts against the valve body 500, and the fastening part 120 fastens to the connecting seat 400. This design achieves a buffering and vibration reduction effect through the valve body 500 and the sealing ring 510. That is, the valve body 500 and the sealing ring 510 buffer each other between the valve shell 200 and the valve island 300. When the vehicle bumps, the sealing ring 510 can absorb the vibration between the valve shell 200 and the valve island 300 through its own elasticity, thereby protecting the expansion valve.

[0055] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0056] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0058] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. An easy-to-assemble automotive electronic expansion valve, characterized in that, include: A connecting bracket (100) includes two symmetrically arranged abutment portions (110) and two symmetrically arranged fastening portions (120); A valve housing (200) and a valve island (300), one of which has a connecting seat (400), and a connecting bracket (100) is connected to the other of which. The connecting seat (400) is configured as a non-circular flange structure. The connecting seat (400) has two symmetrically arranged clearance portions (410) and two symmetrically arranged locking portions (420). The distance between the outer peripheral surfaces of the two clearance portions (410) is less than the distance between the two fastening portions (120), and the distance between the outer peripheral surfaces of the two locking portions (420) is greater than the distance between the two fastening portions (120). The two abutting parts (110) abut against one end face of the connecting seat (400), and the connecting bracket (100) can rotate relative to the connecting seat (400) to the installation position and the locking position; when the connecting bracket (100) is in the installation position, the two fastening parts (120) are respectively located outside the two clearance parts (410) and are separated from the connecting seat (400); when the connecting bracket (100) is in the locking position, the two fastening parts (120) are respectively located outside the two locking parts (420) and are both fastened to the other end face of the connecting seat (400).

2. The automotive electronic expansion valve as described in claim 1, characterized in that: The outer periphery of the connecting seat (400) is set to be elliptical or quasi-elliptical.

3. An easily assembled automotive electronic expansion valve as described in claim 1 or 2, characterized in that: The connecting seat (400) is located at the top of the valve island (300), and the connecting bracket (100) is connected to the bottom of the valve housing (200).

4. The automotive electronic expansion valve as described in claim 1, characterized in that: The abutting part (110) and the fastening part (120) have a height difference in the axial direction of the connecting seat (400).

5. The automotive electronic expansion valve as described in claim 4, characterized in that: The height difference between the abutting part (110) and the fastening part (120) is interference-fitted with the thickness of the connecting seat (400).

6. An easily assembled automotive electronic expansion valve as described in claim 1 or 5, characterized in that: The abutting part (110) and the fastening part (120) are offset in the circumferential direction of the connecting bracket (100).

7. The automotive electronic expansion valve as described in claim 1, characterized in that: One of the fastening part (120) and the locking part (420) is provided with a limiting protrusion (121) and the other is provided with a limiting groove (421). When the connecting bracket (100) is in the locking position, the limiting protrusion (121) is embedded in the limiting groove (421) to restrict the connecting bracket (100) from rotating relative to the connecting seat (400).

8. An easily assembled automotive electronic expansion valve as described in claim 1 or 3, characterized in that: The bottom of the valve housing (200) and one of the connecting brackets (100) are provided with a positioning post (210) and the other is provided with a positioning hole (130). The positioning post (210) is inserted into the positioning hole (130) so that the connecting bracket (100) is connected to the bottom of the valve housing (200).

9. The automotive electronic expansion valve as described in claim 1, characterized in that: A valve body (500) is installed inside the valve island (300), and the abutting part (110) is in contact with the valve body (500).

10. The automotive electronic expansion valve as described in claim 9, characterized in that: A sealing ring (510) is installed between the valve body (500) and the valve island (300). The abutment portion (110) applies a sealing pressure to the valve body (500) to compress the sealing ring (510). The sealing ring (510) applies an elastic force to the valve body (500) in a compressed state to push against the abutment portion (110).

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