Fan

Abstract

The utility model provides a fan which comprises a driving assembly and a fan head, and the fan head is detachably connected to the driving assembly. A movable lock catch mechanism is arranged on the fan head, the lock catch mechanism can be selectively in a locked state or an unlocked state, and when the fan head is connected to the driving assembly and the lock catch mechanism is in the locked state, the fan head and the driving assembly can be mutually connected and fixed; when the lock catch mechanism is in the unlocking state, the fan head can be separated from the driving assembly. According to the fan provided by the invention, the fan head can be quickly and integrally detached from the driving assembly, so that the convenience of detaching the fan head is improved, and the convenience and efficiency of cleaning the fan are improved.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a fan. Background Art

[0002] Fans are widely used in daily life and industrial production. Their working principle is that the motor drives the fan blades to rotate, accelerating the flow of surrounding air, thereby generating wind power, achieving the purpose of cooling down or ventilating the air.

[0003] A fan usually includes a connected fan head and a drive assembly. The fan head mainly includes a front mesh, a rear mesh and fan blades. When cleaning existing fan products, the front mesh, rear mesh and fan blades need to be removed one by one from the drive assembly, which makes disassembly more complicated. Utility Model Content

[0004] The present application provides a fan to solve the technical problem that existing fan products need to disassemble the front mesh, rear mesh and fan blades one by one from the drive assembly when cleaning, which makes the disassembly more complicated.

[0005] In a first aspect, the present application provides a fan, comprising:

[0006] Drive components;

[0007] The fan head is detachably connected to the drive assembly; a movable locking mechanism is provided on the fan head, which can be selectively in a locked state or an unlocked state. When the fan head is connected to the drive assembly and the locking mechanism is in the locked state, the fan head can be connected and fixed to the drive assembly; when the locking mechanism is in the unlocked state, the fan head can be separated from the drive assembly.

[0008] Its further technical solution is that the locking mechanism includes a locking member, which is movably mounted on the fan head, and the drive assembly is provided with a locking slot. When the fan head is connected to the drive assembly and the locking mechanism is in a locked state, the locking member is partially located in the locking slot; when the locking mechanism is in an unlocked state, the locking member is located outside the locking slot, and the fan head can be separated from the drive assembly.

[0009] A further technical solution is that the locking mechanism also includes an elastic member and a connecting member; the connecting member is fixed to the fan head, the locking member is installed between the connecting member and the fan head, and the elastic member is installed between the connecting member and the locking member.

[0010] A further technical solution is that the locking groove is located on the outside of the driving assembly and the locking groove and the locking member are adapted to each other.

[0011] A further technical solution is that the fan head includes a fan housing, fan blades and a rotating member, the fan blades are located in the fan housing, and the rotating member is rotatably connected to the fan housing through a bearing; the rotating member is inserted through the fan blades and the fan housing to fix the fan blades and the rotating member relatively;

[0012] The drive assembly includes a drive housing and a motor. The motor is located in the drive housing. The motor has a rotating shaft. The fan housing is detachably connected to the drive housing. The rotating shaft is detachably connected to the rotating part. When the rotating shaft is connected to the rotating part, the rotating shaft can drive the rotating part to rotate.

[0013] A further technical solution is that the rotating member includes a first rotating end and a second rotating end connected to each other, the first rotating end being rotatably connected to the fan housing through a bearing, the first rotating end being passed through the fan blade and the fan housing so that the fan blade and the first rotating end are relatively fixed; the second rotating end is provided with a notch groove,

[0014] An axle pin is provided at the end of the rotating shaft, and the axle pin is penetrated in the rotating shaft along the radial direction of the rotating shaft. When the rotating shaft is connected to the rotating member, the axle pin is located in the notch groove of the second rotating end, so that the rotating shaft drives the rotating member to rotate.

[0015] A further technical solution is that the fan head also includes a limiting member, the limiting member is connected to the rotating member, and the fan blade is located between the limiting member and the bearing.

[0016] A further technical solution is that the limiting member cover is arranged at the end of the rotating member and is threadedly connected to the rotating member.

[0017] A further technical solution is that the fan blade is provided with a mounting hole, the rotating member is passed through the mounting hole, the rotating member is adapted to the mounting hole, and the cross-sections of the mounting hole and the rotating member are both non-circular.

[0018] A further technical solution is that the fan housing includes a front net and a rear net, the front net is detachably connected to the rear net, and the rotating member is rotatably mounted on the rear net through a bearing and passes through the rear net.

[0019] The beneficial effects of the present application are as follows: different from the prior art, the present application provides a fan head that is detachably connected to the drive assembly, so that the fan head can be removed from the drive assembly as a whole, avoiding the complicated process of removing each component included in the fan head from the drive assembly one by one. Secondly, by providing a movable locking mechanism on the fan head, since the locking mechanism can be selectively in a locked state or an unlocked state, when the drive assembly and the fan head are assembled, the fan head and the drive assembly are connected and fixed to each other. By making the locking mechanism movable, the locking mechanism is put into a locked state to make the connection between the fan head and the drive assembly more stable, thereby improving the safety of fan use and helping to reduce the safety risks caused by loose or falling components. When the fan needs to be disassembled, the fan head can be separated from the drive assembly by simply moving the locking mechanism to the unlocked state, that is, the fan head can be quickly disassembled from the drive assembly as a whole in just one step, which helps to improve the convenience of disassembling the fan head, thereby improving the convenience and efficiency of fan cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts. Among them:

[0021] Figure 1 This is a schematic diagram of the assembly of a fan embodiment provided by this application;

[0022] Figure 2 A partial cross-sectional schematic diagram of an embodiment of a fan provided by the present application;

[0023] Figure 3 A partially exploded schematic diagram of an embodiment of a fan provided by the present application;

[0024] Figure 4 A schematic structural diagram of an embodiment of a fan blade provided in this application;

[0025] Figure 5 A schematic structural diagram of an embodiment of a rotating member provided in this application;

[0026] Figure 6 A schematic diagram of the structure of an embodiment of the rear network provided in this application;

[0027] Figure 7 This is a schematic structural diagram of an embodiment of the drive assembly and locking mechanism provided in this application.

[0028] Description of Figure Numbers:

[0029] Fan 10, drive assembly 100, locking slot 110, drive housing 120, motor 130, rotating shaft 131, fan head 200, fan housing 210, front net 211, rear net 212, fan blades 220, mounting through hole 221, rotating member 230, first rotating end 231, second rotating end 232, notched groove 2321, bearing 233, limiting member 240, locking mechanism 300, locking member 310, elastic member 320, connecting member 330, and shaft pin 400. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0032] Fans are widely used in daily life and industrial production. Their working principle is that the motor drives the fan blades to rotate, accelerating the flow of surrounding air, thereby generating wind power, achieving the purpose of cooling down or ventilating the air.

[0033] A fan usually includes a connected fan head and a drive assembly. The fan head mainly includes a front mesh, a rear mesh and fan blades. When cleaning existing fan products, the front mesh, rear mesh and fan blades need to be removed one by one from the drive assembly, which makes disassembly more complicated.

[0034] Therefore, in order to solve the technical problem that existing fan products need to disassemble the front mesh, rear mesh, and fan blades one by one when cleaning, which makes disassembly more complicated, the present application provides a fan that can improve the convenience of fan disassembly, thereby improving the convenience and efficiency of fan cleaning. Please refer to the following embodiments for details.

[0035] like Figure 1-Figure 7 As shown, the fan 10 provided in the present application includes a drive assembly 100 , a fan head 200 and a locking mechanism 300 .

[0036] Among them, the fan head 200 is detachably connected to the drive assembly 100; a movable locking mechanism 300 is provided on the fan head, and the locking mechanism 300 can be selectively in a locked state or an unlocked state. When the fan head 200 is connected to the drive assembly 100 and the locking mechanism 300 is in the locked state, the fan head can be connected and fixed to the drive assembly; when the locking mechanism 300 is in the unlocked state, the fan head 200 can be separated from the drive assembly 100.

[0037] Thus, by providing the fan head 200 detachably connected to the drive assembly 100, the fan head 200 can be removed from the drive assembly 100 as a whole, avoiding the complicated process of removing the various components included in the fan head 200 from the drive assembly one by one. Secondly, by providing a movable locking mechanism on the fan head, since the locking mechanism 300 can be selectively in a locked state or an unlocked state, when the drive assembly 100 and the fan head 200 are assembled, the locking mechanism 300 can be in a locked state or an unlocked state by the movable locking mechanism 300. The locked state can make the connection between the fan head 200 and the drive assembly 100 more stable, thereby improving the safety of the use of the fan 10 and helping to reduce the safety risks caused by loose or falling parts; and when the fan 10 needs to be disassembled, the fan head 200 can be separated from the drive assembly 100 by simply moving the locking mechanism 300 to the unlocked state, that is, the fan head 200 can be quickly removed from the drive assembly 100 in just one step, which helps to improve the convenience of disassembling the fan head 200, thereby improving the convenience and efficiency of cleaning the fan 10.

[0038] In some embodiments, the fan head 200 can be detachably connected to the driving assembly 100 by means of snaps, screws, plugging, etc.

[0039] The following description is made using the example of the fan head 200 being pluggable and connected to the fan head 200:

[0040] For example, during installation, the fan head 200 can be aligned with the interface on the drive assembly 100. For example, the connecting end of the fan head 200 can be inserted into the corresponding interface of the drive assembly 100 until the two are fully connected. At this point, the locking mechanism 300 can be manually adjusted to a locked state. For example, the locking mechanism 300 may lock the connection between the fan head 200 and the drive assembly 100 by popping out, rotating, or other means.

[0041] When disassembling the fan head 200, the locking mechanism 300 is first adjusted to the unlocked state. Then, the fan head 200 is gently pulled out from the interface of the drive assembly 100, thereby completely disassembling the fan head 200 from the drive assembly 100.

[0042] In this way, the fan head 200 and the driving assembly 100 can be quickly connected and separated by plugging, which simplifies the assembly and disassembly process.

[0043] In some embodiments, the locking mechanism 300 can be installed on the fan head 200 or the driving assembly 100 by rotating, sliding, moving, etc.

[0044] In some embodiments, there may be multiple locking mechanisms 300 , and the locking member 310 of each locking mechanism 300 may be movably installed between the connecting member 330 and the rear net 212 .

[0045] There may be multiple locking slots 110 , all of which are located on the outside of the drive housing. Each locking slot 110 can be connected to a locking member 310 of the locking mechanism 300 in a one-to-one correspondence and can be adapted to each other.

[0046] In this way, by providing a plurality of mutually adapted locking slots 110 and locking members 310 , the stability of the connection between the driving assembly 100 and the fan head 200 can be improved.

[0047] See Figure 2 and Figure 3 In some embodiments, the locking mechanism 300 includes a locking member 310, which is movably mounted on the fan head 200. The drive assembly 100 is provided with a locking slot 110. When the fan head 200 is connected to the drive assembly 100 and the locking mechanism 300 is in a locked state, the locking member 310 is partially located in the locking slot 110; when the locking mechanism 300 is in an unlocked state, the locking member 310 is located outside the locking slot 110, and the fan head 200 can be separated from the drive assembly 100.

[0048] Since the locking member 310 is movably mounted on the fan head 200, when the fan head 200 is connected to the drive assembly 100, the locking member 310 can be moved toward the locking groove 110 so that part of the locking member 310 is located in the locking groove 110 and plugged into the locking groove 110, thereby ensuring a stable connection between the fan head 200 and the drive assembly 100; and when the fan head 200 needs to be removed from the fan head 200, the locking member 310 is moved in the opposite direction of the locking groove 110 so that the locking member 310 is completely removed from the locking groove 110, thereby driving the fan head 200 to move in the opposite direction of the locking groove 110, thereby separating from the drive assembly 100, thereby improving the convenience of disassembling the fan head 200.

[0049] See See Figure 2 and Figure 7In some embodiments, the locking mechanism 300 further includes an elastic member 320 and a connecting member 330 ; the connecting member 330 is fixed to the fan head 200 , the locking member 310 is installed between the connecting member 330 and the fan head 200 , and the elastic member 320 is installed between the connecting member 330 and the locking member 310 .

[0050] In some embodiments, the connector 330 may be fixedly connected to the fan head 200 by screws or the like.

[0051] In some embodiments, the elastic member 320 may be a spring or other material or element having elastic properties.

[0052] For example, when the locking member 310 is moved in the opposite direction of the locking groove 110, the elastic member 320 is compressed, so that the locking member 310 can be moved out of the locking groove 110, thereby driving the fan head 200 to separate from the drive assembly 100; and when the locking member 310 is released, the locking member 310 is reset under the action of the elastic member 320, and the locking mechanism 300 is in a locked state, that is, part of the locking member 310 is located in the locking groove 110 and is plugged into the locking groove 110.

[0053] In this way, by setting the elastic member 320, the user only needs to move the locking member 310 to the unlocked state. After releasing the hand, the elastic member 320 can automatically restore the locking member 310 to the locked state. The user does not need to manually reset the locking member 310, which simplifies the operation process of the locking member 310 and makes the assembly and disassembly of the fan 10 easier and faster.

[0054] In addition, the elastic member 320 can ensure the stable position of the locking member 310 in the locked state, which helps to reduce the possibility of accidental unlocking, thereby reducing the risk of accidental unlocking of the fan 10 due to vibration or collision during use, thereby improving the safety of the fan 10.

[0055] See Figure 2 and Figure 7 In some embodiments, the locking groove 110 is located outside the driving assembly 100 and the locking groove 110 and the locking member 310 are adapted to each other.

[0056] The locking groove 110 may extend around the outer circumference of the driving assembly 100 .

[0057] Among them, the shape and size of the locking member 310 can match the locking groove 110, and the locking member 310 located in the locking groove 110 extends circumferentially around the drive assembly 100. In this way, the locking member 310 can be partially inserted into the locking groove 110 and cooperate with it, thereby achieving a locked state.

[0058] In addition, the locking groove 110 and the locking member 310 extend around the circumference of the driving assembly 100, which can increase the contact area between the locking member 310 and the driving assembly 100, thereby improving the stability of the locking.

[0059] See Figure 2 and Figure 3 In some embodiments, the fan head 200 includes a fan housing 210, fan blades 220 and a rotating member 230. The fan blades 220 are located in the fan housing 210, and the rotating member 230 is rotatably connected to the fan housing 210 through a bearing 233; the rotating member 230 is inserted through the fan blades 220 and the fan housing 210 so that the fan blades 220 and the rotating member 230 are relatively fixed.

[0060] That is to say, the fan blades 220 can rotate along with the rotating member 230. When the rotating member 230 rotates, the fan blades 220 also rotate; when the rotating member 230 stops rotating, the fan blades 220 also stop rotating.

[0061] The drive assembly 100 includes a drive housing 120 and a motor 130. The motor 130 is located in the drive housing 120. The motor 130 has a rotating shaft 131. The fan housing 210 is detachably connected to the drive housing 120; the rotating shaft 131 is detachably connected to the rotating member 230. When the rotating shaft 131 is connected to the rotating member 230, the rotating shaft 131 can drive the rotating member 230 to rotate, thereby driving the fan blades 220 to rotate.

[0062] Since the rotating member 230 is rotatably connected to the fan housing 210 via the bearing 233, and the rotating member 230 is inserted into the fan blades 220, that is, the fan blades 220 are fixed to the rotating member 230 of the fan housing 210 and do not need to directly cooperate with the rotating shaft 131 of the motor 130, when the fan housing 210 is removed from the drive housing 120, the rotating member 230 connected to the fan housing 210 is also separated from the rotating shaft 131, and the fan blades 220 fixed to the rotating member 230 can also be removed at the same time.

[0063] The fan housing 210 may be connected to the drive housing 120 by means of snaps, screws, plugging, etc., so as to achieve a detachable connection to the drive housing 120 .

[0064] The rotating shaft 131 and the rotating member 230 may be plug-connected.

[0065] See Figure 2 and Figure 3 In some embodiments, the fan housing 210 includes a front mesh 211 and a rear mesh 212 , the front mesh 211 is detachably connected to the rear mesh 212 , and the rotating member 230 is rotatably connected to the rear mesh 212 via a bearing 233 and is passed through the rear mesh 212 .

[0066] The following description will be made using the plug-in connection between the rear net 212 and the drive housing 120 and the plug-in connection between the rotating shaft 131 and the rotating member 230 as examples:

[0067] For example, during assembly, the shaft 131 may be aligned with the rotating member 230 for insertion, and then

[0068] Align the rear mesh 212 of the fan housing 210 with the interface on the drive assembly 100 until the two are fully docked, then move the locking member 310 connected to the fan head 200 so that the locking member 310 is partially located in the locking groove 110, thereby locking the locking mechanism 300.

[0069] During disassembly, the locking member 310 can be pulled in the opposite direction (i.e., away from the locking slot 110) to adjust the locking mechanism 300 to the unlocked state, and then the rear net 212 can be pulled out from the interface of the drive assembly 100. At the same time, the rotating shaft 131 can be pulled out from the rotating member 230, thereby realizing the overall disassembly of the fan head 200 from the drive assembly 100.

[0070] In some embodiments, the front net 211 can be connected to the driving housing 120 by means of snaps, screws, plugging, etc., so that the front net 211 and the rear net 212 can be easily disassembled and cleaned.

[0071] See Figure 2 and Figure 5 In some embodiments, the rotating member 230 includes a first rotating end 231 and a second rotating end 232 connected to each other. The first rotating end 231 is rotatably connected to the fan housing 210 via a bearing 233. The first rotating end 231 is inserted through the fan blade 220 and the fan housing 210 so that the fan blade 220 and the first rotating end 231 are relatively fixed. The second rotating end 232 is provided with a notch 2321.

[0072] The end of the rotating shaft 131 is provided with an axle pin 400, which is radially penetrated by the rotating shaft 131. When the rotating shaft 131 is connected to the rotating member 230, the axle pin 400 is located in the notch groove 2321 of the second rotating end 232, so that the rotating shaft 131 drives the rotating member 230 to rotate.

[0073] In this way, the shaft 131 only needs to be gently pulled out from the notch groove 2321 in the opposite direction to disengage the shaft pin 400 from the notch groove 2321. That is, the shaft pin 400 can be easily inserted and pulled out without the assistance of tools, which greatly simplifies the disassembly and assembly process.

[0074] See Figure 2 and Figure 3In some embodiments, the fan head 200 further includes a limiting member 240 , which is connected to the rotating member 230 , and the fan blade 220 is located between the limiting member 240 and the bearing 233 .

[0075] In this way, by providing the limiting member 240 to cover the end of the rotating member 230 , the fan blade 220 can be prevented from being separated from the rotating member 230 .

[0076] In some embodiments, the limiting member 240 is covered on the end of the rotating member 230 and is threadedly connected to the rotating member 230 .

[0077] In this way, the threaded connection method can make the connection between the limiting member 240 and the rotating member 230 more stable, thereby preventing the fan blade 220 from being separated from the rotating member 230.

[0078] See Figure 3 and Figure 4 In some embodiments, the fan blade 220 is provided with a mounting hole 221, the rotating member 230 is passed through the mounting hole 221, the rotating member 230 is adapted to the mounting hole 221, and the cross-section of the mounting hole and the cross-section of the rotating member 230 are both non-circular.

[0079] The cross-sections of the mounting through hole 221 and the rotating member 230 can be set to be elliptical, polygonal or other shapes.

[0080] By setting a non-circular cross-section, it helps to reduce the slipping of the rotating part 230 during rotation, thereby improving the safety of the fan 10. It can also reduce the wear caused by the slipping of the rotating part 230, thereby extending the service life of the fan 10.

[0081] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of this embodiment.

[0082] It should be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, as used herein, the singular forms "a," "an," and "" may also be intended to include the plural forms. The terms "comprise," "include," "contain," and "have" are inclusive and, thus, specify the presence of the stated features, steps, operations, elements, and / or parts, but do not preclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof.

[0083] The above are merely specific embodiments of the present invention, intended to enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A fan, characterized in that: include: Drive components; a fan head, the fan head being detachably connected to the drive assembly; The fan head is provided with a movable locking mechanism, which can be selectively in a locked state or an unlocked state. When the fan head is connected to the drive assembly and the locking mechanism is in the locked state, the fan head can be connected and fixed to the drive assembly; when the locking mechanism is in the unlocked state, the fan head can be separated from the drive assembly.

2. The fan according to claim 1, characterized in that The locking mechanism includes a locking member, which is movably mounted on the fan head. The drive assembly is provided with a locking slot. When the fan head is connected to the drive assembly and the locking mechanism is in the locked state, the locking member is partially located in the locking slot; when the locking mechanism is in the unlocked state, the locking member is located outside the locking slot, and the fan head can be separated from the drive assembly.

3. The fan according to claim 2, characterized in that The locking mechanism further includes an elastic member and a connecting member; the connecting member is fixed to the fan head, the locking member is installed between the connecting member and the fan head, and the elastic member is installed between the connecting member and the locking member.

4. The fan according to claim 2, characterized in that The locking groove is located on the outside of the driving assembly and the locking groove and the locking member are adapted to each other.

5. The fan according to any one of claims 1 to 4, characterized in that: The fan head includes a fan housing, fan blades, and a rotating member, wherein the fan blades are located in the fan housing, and the rotating member is rotatably connected to the fan housing via a bearing; the rotating member is inserted through the fan blades and the fan housing to fix the fan blades relative to the rotating member; The drive assembly includes a drive housing and a motor, wherein the motor is located in the drive housing and has a rotating shaft. The fan housing is detachably connected to the drive housing; the rotating shaft is detachably connected to the rotating member. When the rotating shaft is connected to the rotating member, the rotating shaft can drive the rotating member to rotate.

6. The fan according to claim 5, characterized in that The rotating member includes a first rotating end and a second rotating end connected to each other, the first rotating end being rotatably connected to the fan housing through the bearing, the first rotating end being passed through the fan blade and the fan housing so that the fan blade and the first rotating end are relatively fixed; the second rotating end is provided with a notch groove, An axle pin is provided at the end of the rotating shaft, and the axle pin is penetrated in the rotating shaft along the radial direction of the rotating shaft. When the rotating shaft is connected to the rotating member, the axle pin is located on the notch groove of the second rotating end, so that the rotating shaft drives the rotating member to rotate.

7. The fan according to claim 5, characterized in that The fan head further includes a limiting member connected to the rotating member, and the fan blade is located between the limiting member and the bearing.

8. The fan according to claim 7, characterized in that The limiting member cover is arranged at the end of the rotating member and is threadedly connected to the rotating member.

9. The fan according to claim 5, characterized in that The fan blade is provided with a mounting through hole, the rotating member is passed through the mounting through hole, the rotating member is adapted to the mounting through hole, and the cross section of the mounting through hole and the cross section of the rotating member are both non-circular.

10. The fan according to claim 5, characterized in that The fan housing includes a front net and a rear net, the front net is detachably connected to the rear net, and the rotating member is rotatably mounted on the rear net through a bearing and passes through the rear net.

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