A kind of automobile air conditioner air outlet stop spring mounting equipment

By designing a pneumatic feed pipe and a fixing fixture, the stop springs are installed from bottom to top, which solves the problems of difficult installation and low pass rate of stop springs, improves installation efficiency and pass rate, reduces scrap rate, and simplifies the automated installation process.

CN116511857BActive Publication Date: 2026-02-24NINGBO JOYSONQUIN AUTOMOTIVE SYST HLDG CO LTD
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Patent Information

Application Number
CN202310438158.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-04-18
Publication Date
2026-02-24
Estimated Expiration
2043-04-18

AI Technical Summary

Technical Problem

In existing technologies, the installation of stop springs is difficult, and deviations are prone to occur during automatic clamping, resulting in low installation qualification rate and high scrap rate. Furthermore, manual installation can easily cause eye fatigue and low installation efficiency.

Method used

The installation method uses a pneumatic feed pipe to transport the stop springs from bottom to top. The design of the fixing clamp and positioning column ensures that the stop springs accurately enter the spring hole. The stop springs are fixed by the magnetic inner support claw to avoid clamping deviation and damage. Combined with the design of the vibratory plate and the feeder, the stop springs are transported one by one with precision.

Benefits of technology

It improved the installation qualification rate of stop springs, reduced the scrap rate, reduced eye fatigue, improved installation efficiency and accuracy, and simplified the automated installation process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a kind of automobile air conditioner air outlet stop spring installation equipment, including body, air conditioner air outlet includes shell and valve, shell is equipped with a spring hole for installing stop spring, the valve is located at the opening of spring hole, when installing stop spring, the opening direction of spring hole is downward, the body includes pneumatic feeding pipe, the pneumatic feeding pipe is used to send stop spring into spring hole by the way of pneumatic delivery from bottom to top, the body further includes the fixing clamp for fixing shell, the fixing clamp is equipped with the fixer for fixing stop spring in spring hole.The application provides a kind of automobile air conditioner air outlet stop spring installation equipment, which installs stop spring from bottom to top, can avoid the problem of low qualified rate and high scrap rate caused by automatic clamping stop spring.
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Description

Technical Field

[0001] This invention relates to the field of automotive parts installation equipment, specifically to a device for installing stop springs for automotive air conditioning vents. Background Technology

[0002] When the valve of the air conditioner vent is pulled, a stop spring structure is often installed to indicate when it has been pulled to the correct position, thus preventing excessive pulling and damage to the air conditioner vent.

[0003] To avoid the design of the stop spring affecting the quality of the air conditioner vent, the size of the stop spring is reduced. However, small-sized stop springs present significant installation difficulties, both manually and automatically. Manually, the stop spring must be installed from top to bottom. The alignment process during installation can easily cause eye strain, leading to dizziness for installers after prolonged work, significantly reducing installation efficiency and increasing the risk of missed installations. Furthermore, the installation difficulty increases substantially when the stop spring is installed at a deeper depth. Automatically, the stop spring is also installed from top to bottom. Because of its small size, the clamping area is small, significantly increasing the difficulty of clamping the stop spring and increasing the risk of misalignment. This can cause interference between the stop spring and the spring hole, resulting in deformation or damage to the spring hole and a decrease in the straightness of the stop spring. Ultimately, this leads to a low pass rate and a high scrap rate in automated assembly. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a stop spring installation device for automotive air conditioning vents, which avoids the problems of low pass rate and high scrap rate caused by automatic clamping of stop springs by installing the stop spring from bottom to top.

[0005] The technical solution adopted by the present invention to solve the above problems is as follows: a stop spring installation device for an automotive air conditioning vent, comprising a body, the air conditioning vent comprising a housing and a valve, the housing having a spring hole for installing the stop spring, the valve being located at the opening of the spring hole, the opening of the spring hole facing downwards when installing the stop spring, the body comprising a pneumatic feed pipe, the pneumatic feed pipe being used to convey the stop spring from bottom to top into the spring hole by pneumatic conveying, the body further comprising a fixing clamp for fixing the housing, the fixing clamp being provided with a fixture for fixing the stop spring in the spring hole.

[0006] Compared with the prior art, the advantages of this invention are as follows: The installation method of blowing a stop spring into the spring hole from bottom to top through the air feed pipe reduces the need for clamping the stop spring, thus avoiding deviations during clamping. Furthermore, because the stop spring is inserted into the spring hole via a pneumatically supplied soft installation method during installation, misalignment between the stop spring and the spring hole will not damage the spring hole or reduce the straightness of the stop spring. Even if installation fails, it can still be re-aligned and installed, preventing the scrapping of the housing and the stop spring, reducing the scrap rate of automated installation, and improving the product qualification rate. The design of the fixing clamp and retainer ensures that after the stop spring is installed into the spring hole, it will not detach from the spring hole when the air feed pipe is removed, facilitating the assembly of the valve and the housing.

[0007] As an improvement of the present invention, the fixing clamp includes two inner support claws. The two inner support claws fix the housing by abutting against the inner wall of the housing and moving away from each other. The inner support claws are made of magnets. With this improvement, since the valve is located inside the housing, the stop spring is also located inside the housing to cooperate with the valve. At the same time, since both the housing and the valve are plastic parts, they do not have magnetic effect, while the tension spring is a metal part and can be made of magnetic metal. By making the inner support claws magnetic, the purpose of fixing the housing can be satisfied, and the stop spring can be attracted into the spring hole, so that it will not fall out of the spring hole due to the detachment of the air pressure feed pipe. Then it is convenient to install the valve on the housing and close the spring hole with the valve, so that the valve cooperates with the stop spring. At the same time, the inner support claws and the fixing device are of the same structure, making the equipment simpler.

[0008] As an improvement of the present invention, the housing is provided with a mounting hole for installing a valve. The mounting hole is arranged parallel to the spring hole. The body includes a positioning post, which is used to cooperate with the mounting hole to position the mounting hole. The output end of the pneumatic feed pipe is fixedly connected to the positioning post. When the positioning post is connected with the mounting hole, the output end of the pneumatic feed pipe is connected to the spring hole. Through this improvement, because the stop spring is small in size and has high installation accuracy, it is not easy to directly and accurately position it through the output end of the pneumatic feed pipe and the spring hole. However, the characteristic that the mounting hole is not assembled with the valve can be utilized first to accurately position the mounting hole and the positioning post, thereby satisfying the purpose of accurately positioning the spring hole and the output end of the pneumatic feed pipe, and realizing the purpose of accurately blowing the stop spring into the spring hole.

[0009] As an improvement of the present invention, the positioning column is fixedly connected to a horizontal cylinder, the fixing clamp is fixedly connected to a vertical cylinder, and a valve seat for placing the valve is provided below the fixing clamp. Through the improvement, after the stop spring is installed, the positioning column is separated from the housing, and the housing is then fixedly installed with the valve.

[0010] As an improvement of the present invention, the input end of the pneumatic feed pipe is provided with a feeder, which is used to launch the tension springs one by one into the spring holes. With this improvement, because the installation of the tension springs by blowing air can easily cause a large number of tension springs to be ejected from the pneumatic feed pipe if the alignment between the pneumatic feed pipe and the spring hole fails or if the pneumatic feed pipe and the spring hole are separated. However, by installing them individually, the situation of a large number of tension springs being ejected due to misoperation can be avoided, and the control over the installation of the tension springs is stronger and the accuracy is higher.

[0011] As an improvement of the present invention, a vibratory feeder is further provided upstream of the feeder, and a feeding pipe is provided on the feeder. A feeding air nozzle is provided on the side of the feeding pipe. The feeding air nozzle causes a stop spring to move rapidly along the feeding pipe by blowing air. A material distribution block is provided at the end of the feeding pipe. The material distribution block can move radially along the feeding pipe. A receiving pipe is provided on the material distribution block. At one radial movement limiting end of the material distribution block, the receiving pipe is opposite to the feeding pipe. At the other radial movement limiting end of the material distribution block, the receiving pipe is... The pipeline is opposite to a separating air nozzle. Through the aforementioned improvement, the stop spring moves in the feeding pipeline through the vibration pushing process of the vibratory plate. However, because there is resistance when the stop spring moves in the feeding pipeline, the vibration pushing effect of the vibratory plate will decrease. Through the design of the feeding air nozzle, the movement of the stop spring in the feeding pipeline can be made smoother. The design of the material separating block can separate the stop spring entering the receiving pipeline from the stop spring in the feeding pipeline, and the stop spring entering the receiving pipeline enters the air blowing feed pipe through the separating air nozzle.

[0012] As an improvement of the present invention, a stop gripper and a detection probe are provided at one end of the feeding pipe near the receiving pipe. The stop gripper is used to fix the stop springs that have not yet entered the receiving pipe to prevent too many stop springs from entering the receiving pipe. The detection probe is used to detect whether the next stop spring entering the receiving pipe has been positioned. The detected stop spring is located between the stop spring entering the receiving pipe and the fixed stop spring. Through this improvement, the design of the stop gripper and the detection probe ensures that the stop spring mainly... It moves by the vibration of the vibratory feeder, and its movement is characterized by continuity and slowness. This allows the detection probe to stop the next stop spring as it enters the receiving pipe and the next stop spring arrives at the port of the feeding pipe. This stops the pushing and blowing, ensuring that the stop springs enter the receiving pipe one by one. This guarantees that there is only one stop spring in the receiving pipe when the material distribution block moves, and that the stop spring will not be in the receiving pipe with one end in the receiving pipe and the other end in the feeding pipe.

[0013] As an improvement of the present invention, one end of the stop spring is a stop buckle, and the other end of the stop spring is a spring. When the stop spring is installed in the spring hole, the stop buckle is located at the end of the spring hole near the valve. When the stop spring is installed in the feeding pipe, the stop buckle is located at the front end of the stop spring in the direction of movement. Through this improvement, when the stop spring is installed in the spring hole, the design of the stop buckle being located at the end of the spring hole near the valve can ensure the stopping effect of the stop spring and avoid the spring end of the stop spring from stopping, which could easily scratch the valve. When the stop spring is installed in the feeding pipe, the design of the stop buckle being located at the front end of the stop spring in the direction of movement can make the stop spring more effective when blown, making the stop spring easier to move when blown in the feeding pipe and receiving pipe.

[0014] As an improvement of the present invention, the pneumatic feed pipe is U-shaped, and a reversing valve is provided at the bottom of the pneumatic feed pipe. The reversing valve is used to reverse the tension spring. The pneumatic feed pipe between the reversing valve and the spring hole is vertically arranged, and the pneumatic feed pipe between the reversing valve and the feeder is inclined. An air nozzle is provided at the bottom of the reversing valve. The air nozzle is used to send the stop spring of the reversing valve into the spring hole. Through this improvement, the reversing operation of the stop spring can be realized, ensuring that when the stop spring is finally installed in the spring hole, the stop is fastened in the spring hole at the end near the valve.

[0015] As an improvement of the present invention, the vibrating plate is provided with a screening plate, and the screening plate is provided with an inclined screening groove. The length of the stop spring is greater than the length of the screening groove, and the length of the stop buckle is less than the length of the screening groove. Through this improvement, the stop spring is screened to ensure the consistency of the direction of the stop spring in the feeding pipe, which facilitates the effective and accurate operation of the stop spring in the future. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a cross-sectional structural diagram of the air outlet of the air conditioner of the present invention.

[0018] Figure 3 This is a schematic diagram of the alignment structure between the pneumatic feed pipe and the spring hole of the present invention.

[0019] Figure 4 This is a schematic diagram of the feeding machine structure of the present invention.

[0020] Figure 5 This is a schematic diagram of the longitudinal section structure of the feeding pipe of the feeder of the present invention.

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the feeding pipe of the feeder of the present invention.

[0022] Figure 7 This is a schematic diagram of the stop spring structure of the present invention passing through the screen plate.

[0023] Figure 8 This is a schematic diagram of the stop spring structure of the present invention that does not pass through the screen plate.

[0024] The diagram shows: 1. Housing, 1.1. Spring hole, 1.2. Mounting hole, 2. Valve, 3. Stop spring, 3.1. Stop buckle, 4. Pneumatic feed pipe, 5. Fixing clamp, 5.1. Inner support claw, 6. Positioning column, 7. Horizontal cylinder, 8. Longitudinal cylinder, 9. Valve seat, 10. Feeder, 10.1. Feeding pipe, 10.2. Feeding nozzle, 10.3. Dividing block, 10.3.1. Receiving pipe, 10.4. Separating nozzle, 10.5. Stop gripper, 10.6. Detection probe, 11. Vibrating plate, 11.1. Screen plate, 11.1.1. Screening trough, 12. Reversing valve, 12.1. Air jet nozzle, 12.2. Residence chamber. Detailed Implementation

[0025] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0026] like Figure 1-3As shown, a device for installing a stop spring 3 in an automotive air conditioning vent includes a main body. The air conditioning vent includes a housing 1 and valves 2. The housing 1 has two vents and two valves 2 for simultaneously installing stop springs 3 in the two valves 2. The housing 1 has a spring hole 1.1 for installing the stop spring 3. The valve 2 is located at the opening of the spring hole 1.1. When installing the stop spring 3, the opening of the spring hole 1.1 faces downward. The main body includes a pneumatic feed pipe 4 for conveying the stop spring 3 from bottom to top into the spring hole 1.1 by pneumatic conveying. The main body also includes a fixing clamp 5 for fixing the housing 1. The fixing clamp 5 has a retainer for fixing the stop spring 3 in the spring hole 1.1. The fixing clamp 5 includes two inner support claws 5. 1. Two inner support claws 5.1 are fixed to the housing 1 by abutting against the inner wall of the housing 1 and moving away from each other. The inner support claws 5.1 are made of magnets and serve as fixers. The housing 1 is provided with a mounting hole 1.2 for installing the valve 2. The mounting hole 1.2 is arranged parallel to the spring hole 1.1. The body includes a positioning post 6, which is used to position the mounting hole 1.2 by cooperating with it. The output end of the pneumatic feed pipe 4 is fixedly connected to the positioning post 6. When the positioning post 6 is connected to the mounting hole 1.2, the output end of the pneumatic feed pipe 4 is connected to the spring hole 1.1. The positioning post 6 is fixedly connected to a transverse cylinder 7. The fixing clamp 5 is fixedly connected to a longitudinal cylinder 8. A valve seat 9 for placing the valve 2 is provided below the fixing clamp 5.

[0027] like Figure 3-6As shown, a feeder 10 is provided at the input end of the pneumatic feed pipe 4. The feeder 10 is used to launch the stop springs 3 one by one into the spring holes 1.1. A vibratory feeder 11 is also provided upstream of the feeder 10. A feed pipe 10.1 is provided on the feeder 10. A feed nozzle 10.2 is provided on the side of the feed pipe 10.1. The feed nozzle 10.2 causes the stop springs 3 to move rapidly along the feed pipe 10.1 by blowing air. A material distribution block 10.3 is provided at the end of the feed pipe 10.1. The material distribution block 10.3 can move along the radial direction of the feed pipe 10.1. The material distribution block 10.3 is equipped with a receiving pipe 10.3.1. At one radial movement limiting end of the material distribution block 10.3, the receiving pipe 10.3.1 is opposite to the feeding pipe 10.1. At the other radial movement limiting end of the material distribution block 10.3, the receiving pipe 10.3.1 is opposite to a separating air nozzle 10.4. A stop gripper 10.5 and a detection probe 10.6 are provided at one end of the feeding pipe 10.1 near the receiving pipe 10.3.1. The stop gripper 10.5 is used to fix the stop spring 3 that has not entered the receiving pipe 10.3.1 to prevent... Excessive stop springs 3 enter the receiving pipe 10.3.1. The detection probe 10.6 is used to detect whether the next stop spring 3 entering the receiving pipe 10.3.1 is in place. The detected stop spring 3 is located between the stop spring 3 entering the receiving pipe 10.3.1 and the fixed stop spring 3. One end of the stop spring 3 is a stop buckle 3.1, and the other end is a spring. When the stop spring 3 is installed in the spring hole 1.1, the stop buckle 3.1 is located in the spring hole 1.1 near the valve 2. When the stop spring 3 is located in the feeding pipe... In section 10.1, the stop buckle 3.1 is located at the front end of the moving direction of the stop spring 3. The pneumatic feed pipe 4 is U-shaped. The bottom end of the pneumatic feed pipe 4 is provided with a reversing valve 12. The reversing valve 12 is used to reverse the direction of the stop spring 3. The pneumatic feed pipe 4 between the reversing valve 12 and the spring hole 1.1 is vertically arranged. The pneumatic feed pipe 4 between the reversing valve 12 and the feeder 10 is inclined. The bottom of the reversing valve 12 is provided with an air nozzle 12.1. The air nozzle 12.1 is used to send the stop spring 3 in the reversing valve 12 into the spring hole 1.1.

[0028] The reversing valve 12 has a temporary stop spring 3 in a stop chamber 12.2. The stop spring 3 first moves downwards into the stop chamber 12.2, and then the air nozzle 12.1 sprays the stop spring 3 from the stop chamber 12.2 toward the spring hole 1.1.

[0029] A cylinder is provided on one side of the material distribution block 10.3 and the stop gripper 10.5 to drive the material distribution block 10.3 and the stop gripper 10.5 to move, so as to ensure the movement of the material distribution block 10.3 and the stop gripper 10.5.

[0030] like Figure 5 As shown, the feeding nozzle 10.2 is an air nozzle that blows air upwards at an angle. This is mainly because the movement speed of the stop spring 3 in the feeding pipe 10.1 is affected by the friction between the bottom of the stop spring 3 and the bottom surface of the feeding pipe 10.1. Blowing upwards can reduce friction. If the feeding speed is found to be too slow, the blowing volume of the feeding nozzle 10.2 can be increased. However, this may cause friction between the top of the stop spring 3 and the top surface of the feeding pipe 10.1. Therefore, another feeding nozzle 10.2 that blows air downwards can be set above the feeding pipe 10.1.

[0031] The receiving pipe 10.3.1 is a downward-sloping cone. When the material distribution block 10.3 is moved, the stop spring 3 can move downward along the receiving pipe 10.3.1 first to adjust the angle when discharging the feeder 10. Then, under the action of the separating air nozzle 10.4, the receiving pipe 10.3.1 can concentrate the air pressure, which can make the stop spring 3 move more quickly.

[0032] like Figure 7 , Figure 8 As shown, the vibrating plate 11 is provided with a screen plate 11.1, and the screen plate 11.1 is provided with an inclined screen groove 11.1.1. The length of the stop spring 3 is greater than the length of the screen groove 11.1.1, and the length of the stop buckle 3.1 is less than the length of the screen groove 11.1.1. When the stop spring 3 moves along the discharge track of the vibrating plate 11 towards the screen plate 11.1, if the stop buckle 3.1 is in front, the stop spring 3 will pass smoothly through the screen plate 11.1. If the stop buckle 3.1 is behind, the stop spring 3 will fall back into the vibrating plate 11.

[0033] The aforementioned fixing clamp 5 can also be an external support claw. The external support claw fixes the housing 1 by fixing the outside of the housing 1. A vacuum nozzle is provided inside the housing 1. The vacuum nozzle is used as a fixing device. The vacuum nozzle is aligned with the bottom of the spring hole 1.1. After the stop spring 3 enters the spring hole 1.1, the stop spring 3 is fixed in the spring hole 1.1 by the vacuum nozzle.

[0034] The above description only illustrates the preferred embodiments of the present invention and should not be construed as limiting the scope of the claims. The present invention is not limited to the above embodiments, and variations in its specific structure are permitted. All modifications made within the scope of the independent claims of this invention are also within the scope of protection of this invention.

Claims

1. A device for installing a stop spring for an automotive air conditioning vent, comprising a body, characterized in that: The air conditioner outlet includes a housing (1) and a valve (2). The housing (1) has a spring hole (1.1) for installing a stop spring (3). The valve (2) is located at the opening of the spring hole (1.1). When installing the stop spring (3), the opening of the spring hole (1.1) faces downward. The body includes a pneumatic feed pipe (4). The pneumatic feed pipe (4) is used to feed the stop spring (3) from bottom to top into the spring hole (1.1) by pneumatic conveying. The body also includes a fixing clamp (5) for fixing the housing (1). The fixing clamp (5) is provided with a fixture for fixing the stop spring (3) in the spring hole (1.1). The fixing clamp (5) includes two fixtures. The inner support claws (5.1) are fixed to the housing (1) by abutting against the inner wall of the housing (1) with their distance from each other. The inner support claws (5.1) are made of magnets. The housing (1) is provided with a mounting hole (1.2) for installing the valve (2). The mounting hole (1.2) is arranged parallel to the spring hole (1.1). The body includes a positioning post (6). The positioning post (6) is used to cooperate with the mounting hole (1.2) to position the mounting hole (1.2). The output end of the pneumatic feed pipe (4) is fixedly connected to the positioning post (6). When the positioning post (6) is connected to the mounting hole (1.2), the output end of the pneumatic feed pipe (4) is connected to the spring hole (1.1).

2. The device for installing a stop spring for an automotive air conditioning vent according to claim 1, characterized in that: The positioning column (6) is fixedly connected to a horizontal cylinder (7), the fixing clamp (5) is fixedly connected to a vertical cylinder (8), and a valve seat (9) for placing the valve (2) is provided below the fixing clamp (5).

3. The device for installing a stop spring for an automotive air conditioning vent according to claim 1, characterized in that: The input end of the pneumatic feed pipe (4) is provided with a feeder (10), which is used to launch the stop springs (3) one by one into the spring hole (1.1).

4. The device for installing a stop spring for an automotive air conditioning vent according to claim 3, characterized in that: A vibratory plate (11) is also provided upstream of the feeder (10). The feeder (10) is provided with a feeding pipe (10.1). A feeding air nozzle (10.2) is provided on the side of the feeding pipe (10.1). The feeding air nozzle (10.2) causes the stop spring (3) to move rapidly along the feeding pipe (10.1) by blowing air. A material distribution block (10.3) is provided at the end of the feeding pipe (10.1). The material distribution block (10.3) can move along the radial direction of the feeding pipe (10.1). A receiving pipe (10.3.1) is provided on the material distribution block (10.3). At one radial movement limit end of the material distribution block (10.3), the receiving pipe (10.3.1) is opposite to the feeding pipe (10.1). At the other radial movement limit end of the material distribution block (10.3), the receiving pipe (10.3.1) is opposite to a separation air nozzle (10.4).

5. The device for installing a stop spring for an automotive air conditioning vent according to claim 4, characterized in that: The feeding pipe (10.1) is provided with a stop gripper (10.5) and a detection probe (10.6) at one end near the receiving pipe (10.3.1). The stop gripper (10.5) is used to fix the stop spring (3) that has not entered the receiving pipe (10.3.1) to prevent too many stop springs (3) from entering the receiving pipe (10.3.1). The detection probe (10.6) is used to detect whether the next stop spring (3) entering the receiving pipe (10.3.1) has been in place. The detected stop spring (3) is located between the stop spring (3) entering the receiving pipe (10.3.1) and the fixed stop spring (3).

6. The device for installing a stop spring for an automotive air conditioning vent according to claim 4, characterized in that: One end of the stop spring (3) is a stop buckle (3.1), and the other end of the stop spring (3) is a spring. When the stop spring (3) is installed in the spring hole (1.1), the stop buckle (3.1) is located in the spring hole (1.1) near the valve (2). When the stop spring (3) is installed in the feeding pipe (10.1), the stop buckle (3.1) is located at the front end of the moving direction of the stop spring (3).

7. The device for installing a stop spring for an automotive air conditioning vent according to claim 6, characterized in that: The pneumatic feed pipe (4) is U-shaped. The bottom end of the pneumatic feed pipe (4) is provided with a reversing valve (12). The reversing valve (12) is used to reverse the stop spring (3). The pneumatic feed pipe (4) between the reversing valve (12) and the spring hole (1.1) is vertically arranged. The pneumatic feed pipe (4) between the reversing valve (12) and the feeder (10) is inclined. The bottom of the reversing valve (12) is provided with an air nozzle (12.1). The air nozzle (12.1) is used to send the stop spring (3) in the reversing valve (12) into the spring hole (1.1).

8. The device for installing a stop spring for an automotive air conditioning vent according to claim 6, characterized in that: The vibrating plate (11) is provided with a screen plate (11.1), and the screen plate (11.1) is provided with an inclined screen trough. 11.1.1), the length of the stop spring (3) is greater than that of the sieve trough ( The length of the stop buckle (3.1) is less than the length of the screen trough (11.1.1). The length of 11.1.1).

Citation Information

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