VCM cleaning device

Abstract

The utility model discloses a VCM cleaning device. The technical problem that in the prior art, dirt residues are likely to exist in a VCM cleaning mode is solved. The VCM cleaning device comprises a workbench, blowing assemblies and a driving assembly, the multiple blowing assemblies are arranged on the workbench, each blowing assembly comprises an air outlet pipe, the air outlet pipes are rotatably arranged on the workbench, the diameter of one end of each air outlet pipe is smaller than that of an inner hole of a VCM, each air outlet pipe is provided with an air outlet, and the air outlets are formed in the side walls of the air outlet pipes; the other end of the air outlet pipe is connected with a vacuum generator; the driving assembly is connected with the blowing assembly and drives the air outlet pipes to rotate around the central axes of the air outlet pipes. The VCM cleaning efficiency is high, and the cleaning effect is good.

Description

Technical Field

[0001] The present application belongs to the field of camera technology, and specifically relates to a VCM cleaning device. Background Art

[0002] At present, in the camera module industry, OIS (Optical Image Stabilizer) and VCM (Voice Coil Motor) are widely used. The existing camera module is equipped with a VCM motor and a lens. The lens needs to be assembled inside the VCM motor. However, before assembling the lens, the VCM motor needs to be cleaned. The current cleaning method of the VCM motor is mainly as follows: the existing cleaning jig places the VCM motor horizontally, with the central axis of the VCM in a vertical state, and washes or blows dust from the VCM in the vertical direction. Please refer to Figure 1 The existing cleaning fixture is a turntable, on which a carrier 10 is provided, in which a groove 20 is provided, in which a VCM motor is provided, and a plurality of nozzles are provided above or below the turntable. Specifically, the VCM motor is horizontally placed in the groove 20 of the carrier 10, and the VCM motor is vertically washed or dusted by a plurality of nozzles provided above or below the turntable. Due to the small size of the VCM motor and the fixed cleaning position, dirt residue is easily present inside the VCM, which eventually leads to dirty modules and a high defect rate. Utility Model Content

[0003] In order to solve the technical problem that the current method of cleaning VCM is prone to dirt residue, the present application provides a VCM cleaning device.

[0004] In a first aspect of the present application, a VCM cleaning device is provided, comprising:

[0005] Workbench;

[0006] A blowing assembly, wherein a plurality of the blowing assemblies are arranged on the workbench, the blowing assembly comprises an air outlet pipe, the air outlet pipe is rotatably arranged on the workbench, the diameter of one end of the air outlet pipe is smaller than the diameter of the inner hole of the VCM, and the air outlet pipe is provided with an air outlet, and the air outlet is arranged on the side wall of the air outlet pipe; the other end of the air outlet pipe is connected to a vacuum generator;

[0007] A driving assembly is connected to the blowing assembly, and the driving assembly drives the plurality of air outlet pipes to rotate around their central axes.

[0008] In some embodiments, the blowing assembly includes a pneumatic rotary joint, one end of the pneumatic rotary joint is arranged on the workbench and connected to the vacuum generator, the other end of the pneumatic rotary joint is connected to the other end of the air outlet pipe, and the other end of the air outlet pipe refers to an end that is rotated and sealed in the pneumatic rotary joint.

[0009] In some embodiments, a gas distribution chamber is disposed in the workbench, and the workbench is provided with a plurality of first through holes corresponding one-to-one to the plurality of gas outlet pipes, and the gas distribution chamber is connected with the gas outlet pipes through the plurality of first through holes.

[0010] In some embodiments, a plurality of the blowing assemblies are arranged in a matrix.

[0011] In some embodiments, the driving assembly includes at least one motor, and the output shaft of the motor is drivingly connected to the plurality of blowing assemblies via a transmission member.

[0012] In some embodiments, the transmission member is a belt, and the belt is sequentially arranged around the plurality of air outlet pipes, and the rotation directions of the air outlet pipes adjacent to each other along the length direction of the belt are opposite.

[0013] In some embodiments, each of the air outlet pipes is sleeved with a step belt pulley, and both sides of the belt are provided with belt teeth matching the step belt pulley so that the belt is connected to the step belt pulley in a transmission manner.

[0014] In some embodiments, the driving assembly includes two motors, and the two motors are respectively disposed on opposite sides of the blowing assembly.

[0015] In some embodiments, the support plate is provided with a second through hole matching the plurality of air outlet pipes, a plurality of side panels are provided between the support plate and the workbench, and the support plate, the workbench and the plurality of side panels are enclosed to form a box to collect impurities and dust after cleaning.

[0016] In some embodiments, the plurality of VCMs are detachably arranged on a tray, and the tray is provided with a plurality of third through holes corresponding to the through holes of the VCMs; a limiting member is provided on the top surface of the support plate, and when the tray is arranged on the support plate and the side wall of the tray abuts against the limiting member, the air outlet pipe is passed through the second through hole, the third through hole and the through hole of the VCM.

[0017] According to one or more embodiments of the present application, the VCM cleaning device provides an air blowing component to purge the inner walls of multiple VCMs. The driving component drives the air outlet pipe to rotate around its axis. The air outlet rotates with the air outlet pipe. The airflow discharged from the air outlet will continuously purge the inner ring wall of the VCM, so that the inner ring wall of the VCM is not prone to impurities and dust residues, and the cleaning effect of the cleaning device is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 The schematic diagram of the structure of the existing cleaning jig in the background technology is shown.

[0020] Figure 2 A schematic diagram of the three-dimensional structure of a VCM cleaning device in one or more embodiments of the present application is shown.

[0021] Figure 3 Shows Figure 2 Schematic diagram of the top view of the VCM cleaning device.

[0022] Figure 4 Shows Figure 3 Schematic diagram of the cross-sectional structure along the AA direction.

[0023] Figure 5 Shows Figure 2 Enlarged view of point B in the middle.

[0024] Figure 6 Another three-dimensional structural schematic diagram of a VCM cleaning device in one or more embodiments of the present application is shown.

[0025] Figure 7 A schematic diagram of the structure of the cooperation among the tray, VCM and blowing assembly in one or more embodiments of the present application is shown.

[0026] Marking description: 10-carrier, 20-groove, 100-workbench, 110-gas distribution chamber, 120-support plate, 121-limiting piece, 122-pick-and-place groove, 200-blowing assembly, 210-air outlet pipe, 211-air outlet, 220-pneumatic rotary joint, 230-vacuum generator, 300-drive assembly, 310-motor, 320-belt, 330-step pulley, 400-VCM, 500-tray. DETAILED DESCRIPTION

[0027] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0028] See also Figure 2-Figure 6 In a first aspect of the present application, a VCM cleaning device (hereinafter referred to as the cleaning device) is provided for removing dust and impurities from a plurality of VCMs 400 . The cleaning device includes a workbench 100 , a blowing assembly 200 and a driving assembly 300 .

[0029] The workbench 100 is a basic component for installing the blowing assembly 200. Figure 2-Figure 4 A plurality of blowing components 200 are arranged on the workbench 100, wherein the blowing components 200 include an air outlet pipe 210, which is rotatably arranged on the workbench 100, the diameter of one end of the air outlet pipe 210 is smaller than the diameter of the inner hole of the VCM400, and the air outlet pipe 21 is provided with an air outlet 211, which is arranged on the side wall of the air outlet pipe 210, and the other end of the air outlet pipe 210 is connected to a vacuum generator 230, and the driving component 300 is connected to the blowing components 200, and the driving component 300 drives the plurality of air outlet pipes 21 to rotate around their central axis.

[0030] See also Figure 5 In this embodiment, a plurality of VCM400s are respectively sleeved on the ends of the air outlet pipe 210, and the air outlet 211 on the side wall of the air outlet pipe 210 is aligned with the inner wall of the VCM400. After the vacuum generator 230 is started, the airflow generated will be discharged from the air outlet 211 of the air outlet pipe 210 to purge the inner wall of the VCM400. The driving component 300 drives the air outlet pipe 210 to rotate around its own central axis. The air outlet 211 rotates with the air outlet pipe 210, and the airflow discharged from the air outlet 211 will continuously purge the inner ring wall of the VCM400. Impurities and dust are not likely to remain on the inner ring wall of the VCM400, and the cleaning device has a good cleaning effect.

[0031] The thickness of VCM400 is generally thin, so after the airflow discharged from the air outlet 211 purges the inner wall of VCM400, the gas will then overflow from the inner wall of VCM400 and purge the top wall and / or bottom wall of VCM400, thereby completing the purge and cleaning of the entire VCM400. The VCM cleaning device of the present application can operate simultaneously through multiple blowing components 200, and can perform batch cleaning on multiple VCM400, with high cleaning efficiency.

[0032] In some embodiments, the VCM cleaning device of the present application is combined with a dust suction device, which can collect and process impurities blown out from the VCM400 to prevent the blown impurities and dust from entering the air of the working environment and affecting the working environment and product quality.

[0033] In some embodiments, the axis of the air outlet 211 is perpendicular to the central axis of the air outlet pipe 210. At this time, the air outlet direction of the air outlet 211 will be perpendicular to the inner ring wall of the VCM400 and will not be blocked by the top wall or the bottom wall of the VCM400, thereby increasing the coverage area of ​​the airflow discharged from the air outlet 211 during blowing, improving the cleaning effect of the cleaning device on the VCM400, and the air outlet of the air outlet 211 can achieve full coverage of the inner ring wall of the VCM400 in height.

[0034] Of course, in other embodiments, the air outlet 211 may also be a strip hole, the length direction of the strip hole is parallel to the length direction of the air outlet pipe 210, and the length of the strip hole is equal to or slightly longer than the thickness of VCM400, which is beneficial to increase the coverage area of ​​the air outlet and improve the blowing efficiency of the blowing component 200.

[0035] In some embodiments, a plurality of air outlets 211 may be arranged at intervals in the circumferential direction of the air outlet pipe 210. When the air outlet pipe 210 rotates one circle, the airflow discharged from the plurality of air outlets 211 will purge the inner wall of the VCM 400 for one circle, further improving the cleaning efficiency. Of course, in other embodiments, the axes of the plurality of air outlets 211 may be located in different planes, so as to further improve the coverage area of ​​the purge.

[0036] See also Figure 2-Figure 4 In some embodiments, the blowing assembly 200 includes a pneumatic rotary joint 220, one end of which is disposed on the workbench 100 and connected to the vacuum generator 230, and the other end of the pneumatic rotary joint 220 is communicated with the other end of the gas outlet pipe 210, and the other end of the gas outlet pipe 210 refers to an end of the gas outlet pipe 210 that is rotated and sealed in the pneumatic rotary joint 220. That is, the gas outlet pipe 210 is rotated relative to the workbench 100 by the pneumatic rotary joint 220. The pneumatic rotary joint 220 is a transition connection sealing device for inputting the gas medium from the static system to the dynamic rotating system, that is, the pneumatic rotary joint 220 is provided with vent holes that penetrate through both ends of the pneumatic rotary joint 220, which are used to transport gas and ensure the sealing of the gas, so that the subsequent gas outlet pipe 210 can output gas while rotating.

[0037] See also Figure 4The workbench 100 is provided with a gas distribution chamber 110, and the workbench 100 is provided with a plurality of first through holes, which are connected to the gas distribution chamber 110, and the plurality of first through holes correspond to the plurality of gas outlet pipes 210 one by one, and the gas distribution chamber 110 is connected to the plurality of gas outlet pipes 210 through the plurality of first through holes. The gas distribution chamber 110 is a cavity provided in the workbench 100 for distributing gas flow, and the gas flow generated by the vacuum generator 230 enters the gas distribution chamber 110 through different first through holes and enters the pneumatic rotary joint 220 and the gas outlet pipe 210 corresponding to the first through holes. This arrangement reduces the number of pipelines for conveying gas in the cleaning device through the same gas distribution chamber 110, and on the other hand, the flow rate of the gas output from the same gas distribution chamber 110 is substantially the same, so that the plurality of gas outlet assemblies 200 can have a good cleaning effect on the corresponding VCM400.

[0038] During the assembly of the camera, a tray 500 is often used to support and transport multiple VCMs 400. The tray 500 is provided with multiple slots for placing and limiting the VCMs 400, and the multiple slots are arranged in a matrix. Figure 3 , Figure 6 and Figure 7 , multiple blowing assemblies 200 are arranged in a matrix, and the multiple blowing assemblies 200 correspond one by one to the slots on the tray 500, that is, the cleaning device provided in this embodiment can still use the existing tray 500 to support and transport multiple VCM400, reducing R&D costs and use costs.

[0039] The driving assembly 300 includes at least one motor 310, and the output shaft of the motor 310 is connected to the plurality of blowing assemblies 200 through a transmission member, that is, the air outlet pipes 210 in the plurality of blowing assemblies 200 are rotated by one motor 310. In some embodiments, the transmission member includes a plurality of gears, the output shaft of the motor 310 is provided with a driving gear, the air outlet pipe 210 or one end of the pneumatic rotary joint 220 connected to the air outlet pipe 210 is provided with a driven gear, the driven gears of the plurality of blowing assemblies 200 are meshed in sequence, the driving gear is meshed with one of the plurality of driven gears, and when the motor 310 drives the driving gear to rotate, the plurality of driven gears also rotate synchronously.

[0040] See also Figure 2-Figure 7In this embodiment, the output shaft of the motor 310 is provided with a driving gear, the driving gear is provided with a first latching tooth, the transmission member is a belt 320, the belt 320 is arranged around the plurality of air outlet pipes 210 in sequence, and the belt 320 is provided with a second latching tooth on both sides. This arrangement is to ensure that the belt 320 can not only provide power for the rotation of the air outlet pipes 210, but also increase the friction force of the rotation of the air outlet pipes 210 under the condition that the belt 320 can be arranged around the plurality of air outlet pipes 210 in sequence. The belt 320 is arranged around the air outlet pipes 210 in sequence, so that the rotation directions of the adjacent air outlet pipes 210 along the length direction of the belt 320 are opposite, and the driving gear, the belt 320 and the plurality of air outlet pipes 210 rotate in coordination with each other to form a circulation path.

[0041] Among them, each outlet pipe 210 is sleeved with a step pulley 330, and the step pulley 330 is provided with a third tooth. The second tooth on the belt 320 is meshed with the first tooth and the third tooth, so as to realize the transmission connection between the belt 320 and the step pulley 330. The multiple step pulleys 330 are arranged in a matrix, which are used to limit the belt 320, so as to improve the stability when the motor 310 and the belt 320 drive the multiple outlet pipes 210 to rotate. Specifically, the step pulley 330 is fixedly set on the outlet pipe 210, and the other end of the outlet pipe 210 is rotatable and sealed in the pneumatic rotary joint 220. It can be understood that when the step pulley 330 rotates, since the other end of the outlet pipe 210 is rotatable and sealed in the pneumatic rotary joint 220, the step pulley 330 can drive the other end of the outlet pipe 210 to which it is fixed to rotate in the pneumatic rotary joint 220.

[0042] Among them, the inner wall of the upper end of the pneumatic rotary joint 220 is provided with an annular groove, and the other end of the air outlet pipe 210 is provided with an elastic annular protrusion. The rotation and sealing of the air outlet pipe 210 in the pneumatic rotary joint 220 are realized through the engagement between the annular protrusion and the annular groove and the elasticity of the annular protrusion.

[0043] When the cleaning device has multiple air blowing components 200, the required belt 320 is relatively long. In order to ensure the driving effect of the motor 310 on the air outlet pipe 210, in this embodiment, two motors 310 can be respectively arranged on opposite sides of the air blowing component 200, and the two motors 310 respectively drive the same belt 320. In other embodiments, the driving component 300 includes one motor 310 and one belt 320; or it can be: the driving component 300 includes two motors 310 and two belts 320, and the multiple air blowing components 200 are divided into two groups. The air blowing components 200 of the same group are connected by the same belt 320, and the two motors 310 respectively drive different belts 320 so that the multiple air blowing components 200 of different groups can rotate synchronously.

[0044] See also Figure 6 In this embodiment, a support plate 120 is arranged above the workbench 100, and a second through hole matching the multiple air outlet pipes 210 is arranged on the support plate 120. Multiple side panels are arranged between the support plate 120 and the workbench 100. The support plate 120, the workbench 100 and the multiple side panels are enclosed to form a box to collect impurities and dust after cleaning. Then, when the blowing component 200 is working, impurities are not easy to fall on the driving component 300, which can ensure the cleanliness of the working environment. It is not easy to cause secondary dust during the operation process to affect the cleaning effect of the cleaning device on multiple VCM400.

[0045] A plurality of VCMs 400 are limited in the card slots of the tray 500, and a plurality of third through holes corresponding to the through holes of the VCMs 400 are provided on the tray 500. The number of the second through holes on the support plate 120 is the same as the number of the third through holes and corresponds one to one. Alternatively, only one second through hole may be provided on the support plate 120, and the size of the second through hole is larger than the size of the third through holes and smaller than the size of the tray 500. The size of the second through hole can accommodate all the air outlet pipes 210. Specifically, when the tray 500 is set on the support plate 120, the projections of the plurality of third through holes on the support plate 120 all fall into the second through hole.

[0046] A limiting member 121 is provided on the top surface of the support plate 120 to facilitate rapid positioning of the tray 500 to the correct position on the support plate 120. When the tray 500 is set on the support plate 120 and the side wall of the tray 500 abuts against the limiting member 121, the air outlet pipe 210 is passed through the second through hole, the third through hole and the through hole of the VCM400, and the air outlet 211 is aligned with the inner wall of the VCM400.

[0047] The limiting member 121 may include at least two limiting plates, the limiting plates being corner limiting plates, and at least two corner limiting plates being arranged relative to each other so that two opposite corners of the tray 500 are respectively limited by one corner limiting plate. Of course, the top surface of the support plate 120 is also provided with a pick-up and placement groove 122. When the tray 500 is arranged on the support plate 120, the projection of the tray 500 on the support plate 120 falls within the pick-up and placement groove 122, that is, the bottom surface of part of the outer edge of the tray 500 does not contact the bottom surface of the support plate 120, which is convenient for the operator or the robot arm to place the tray 500 on the support plate 120 or take it out from the support plate 120.

[0048] Of course, in some embodiments, the tray 500 may no longer be used, and the multiple VCMs 400 may be directly clamped and transferred by a robot arm to clean the gas outlets 211 of the multiple VCMs 400 respectively provided with the gas outlet pipes 210 .

[0049] In this embodiment, the tray 500 with the VCM400 is placed on the cleaning device, and the top ends of the multiple air outlet pipes 210 are respectively located at the inner holes in the middle of the VCM400. The VCM cleaning device is powered on, and the motor 310 and the vacuum generator 230 are turned on. The motor 310 will drive the belt 320 to rotate, and the belt 320 will drive the air outlet pipe 210 connected to it to rotate. The gas generated by the vacuum generator 230 enters the gas distribution bin 110, and then enters the pneumatic rotary joint 220 and the air outlet pipe 210 corresponding to the first through holes through different first through holes, and is finally discharged from the air outlet 211. The discharged gas will blow the inner ring wall of the VCM400 to clean the VCM400. After the cleaning is completed, the motor 310 and the vacuum generator 230 are turned off, and the tray 500 can be taken out from under the cleaning device.

[0050] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0051] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0052] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0054] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A VCM cleaning device, characterized in that: include: Workbench; A blowing assembly, wherein a plurality of the blowing assemblies are arranged on the workbench, the blowing assembly comprises an air outlet pipe, the air outlet pipe is rotatably arranged on the workbench, the diameter of one end of the air outlet pipe is smaller than the diameter of the inner hole of the VCM, and the air outlet pipe is provided with an air outlet, and the air outlet is arranged on the side wall of the air outlet pipe; the other end of the air outlet pipe is connected to a vacuum generator; A driving assembly is connected to the blowing assembly, and the driving assembly drives the plurality of air outlet pipes to rotate around their central axes.

2. The VCM cleaning device according to claim 1, characterized in that: The blowing assembly includes a pneumatic rotary joint, one end of which is arranged on the workbench and connected to the vacuum generator, and the other end of the pneumatic rotary joint is connected to the other end of the air outlet pipe, and the other end of the air outlet pipe refers to an end that rotates and is sealed in the pneumatic rotary joint.

3. The VCM cleaning device according to claim 1 or 2, characterized in that: A gas distribution chamber is arranged in the workbench, and the workbench is provided with a plurality of first through holes corresponding one to one with the plurality of gas outlet pipes, and the gas distribution chamber is connected with the gas outlet pipes through the plurality of first through holes.

4. The VCM cleaning device according to claim 1, characterized in that: The plurality of blowing components are arranged in a matrix.

5. The VCM cleaning device according to claim 1, characterized in that: The driving assembly includes at least one motor, and the output shaft of the motor is drivingly connected to the plurality of blowing assemblies via a transmission member.

6. The VCM cleaning device according to claim 5, characterized in that: The transmission member is a belt, and the belt is arranged around the plurality of air outlet pipes in sequence. The rotation directions of the air outlet pipes adjacent to each other along the length direction of the belt are opposite.

7. The VCM cleaning device according to claim 6, characterized in that: Each of the air outlet pipes is sleeved with a step belt pulley, and both sides of the belt are provided with belt teeth matching the step belt pulley so that the belt is connected to the step belt pulley in a transmission manner.

8. The VCM cleaning device according to claim 6, characterized in that: The driving assembly includes two motors, and the two motors are respectively arranged on opposite sides of the blowing assembly.

9. The VCM cleaning device according to claim 1, characterized in that: A support plate is arranged above the workbench, and the support plate is provided with second through holes matching the multiple air outlet pipes. Multiple side panels are arranged between the support plate and the workbench. The support plate, the workbench and the multiple side panels are enclosed to form a box to collect impurities and dust after cleaning.

10. The VCM cleaning device according to claim 9, characterized in that: The plurality of VCMs are detachably arranged on a tray, and the tray is provided with a plurality of third through holes corresponding to the through holes of the VCMs; A limiting member is disposed on the top surface of the support plate. When the tray is disposed on the support plate and the side wall of the tray abuts against the limiting member, the air outlet pipe passes through the second through hole, the third through hole and the through hole of the VCM.

Images