All-in-one machine matched with VR operation

Abstract

The invention relates to the technical field of VR all-in-one machines, in particular to an all-in-one machine matched with VR operation, which comprises a base, an all-in-one machine body and operation equipment, the base is erected on the ground, the all-in-one machine body is mounted on the upper surface of the base, the operation equipment is arranged on the base, and the operation equipment is used for operating the all-in-one machine body. The base is further provided with a protection assembly, the protection assembly comprises a guardrail and a protection plate, the guardrail is arranged in a semi-opening mode, the guardrail is arranged on the outer side of the all-in-one machine body in a surrounding mode, the protection plate is rotationally borne on the guardrail, and after the protection plate rotates by a certain angle, the all-in-one machine body is enclosed by the guardrail and the protection plate. The guardrail is provided with a driving assembly used for driving the protection plate to rotate. The method has the advantage that the safety of the VR all-in-one machine is improved.

Description

Technical Field

[0001] This application relates to the field of VR all-in-one machine technology, and in particular to an all-in-one machine for VR operation. Background Technology

[0002] VR devices are virtual reality head-mounted display devices with independent processors. They have independent computing, input, and output functions, are not bound by wires, have a higher degree of freedom, and can greatly enhance the experience of watching movies and playing games.

[0003] Currently, there is a type of VR all-in-one machine available in shopping malls. Users can stand in front of the all-in-one machine and use accessories such as VR controllers to control the interface on the monitor, thus achieving the function of controlling the monitor remotely.

[0004] However, because the viewpoint provided by VR differs from that of a user's usual viewpoint, some users who are more sensitive to this type of imagery may experience 3D motion sickness when using a VR all-in-one device, which could lead to falls due to discomfort and pose a certain risk. Summary of the Invention

[0005] To improve the security of VR all-in-one devices, this application provides an all-in-one device for VR operation.

[0006] This application provides a technical solution for use with a VR all-in-one operating device, which employs the following approach: A VR operating all-in-one device includes a base, an all-in-one device body, and an operating device. The base is erected on the ground, the all-in-one device body is mounted on the upper surface of the base, and the operating device is disposed on the base for operating the all-in-one device body. The base also has a protective component, which includes a guardrail and a guard plate. The guardrail is semi-open and surrounds the outside of the all-in-one device body. The guard plate is rotatably supported on the guardrail. When the guard plate rotates a certain angle, the guardrail and the guard plate enclose the all-in-one device body. The guardrail is provided with a drive component for driving the guard plate to rotate.

[0007] By adopting the above technical solution, when in use, the user stands on the upper surface of the base and operates the all-in-one machine through the operating device. During this process, the drive component is activated, which drives the guard plate to rotate so that the guardrail and guard plate can surround the all-in-one machine and the user, reducing the possibility of 3D dizziness when using the VR all-in-one machine, and thus preventing the possibility of falling due to discomfort. This provides protection for the user and improves the safety of the VR all-in-one machine.

[0008] Preferably, the drive assembly includes a drive motor and a first belt drive mechanism. Both the drive motor and the first belt drive mechanism are mounted on the guardrail. The drive motor drives one of the pulleys of the first belt drive mechanism to rotate, and the other pulley of the first belt drive mechanism is coaxially fixed with the guardrail.

[0009] By adopting the above technical solution, the drive motor is started, the output shaft of the drive motor rotates, and one of the pulleys of the first belt drive mechanism rotates, so that the belt of the first belt drive mechanism drives the other pulley to rotate. Since the other pulley of the first belt drive mechanism is coaxially fixed with the guard plate, the rotation of the guard plate can be realized.

[0010] Preferably, there are two guard plates, which are rotatably supported at both ends of the guardrail. There are two sets of first belt drive mechanisms, which act on the two guard plates respectively. A second belt drive mechanism is provided between the two sets of first belt drive mechanisms to realize the transmission of the two sets of first belt drive mechanisms.

[0011] By adopting the above technical solution, the guard plate is divided into two parts, thereby reducing the relative length of the guard plate and improving the smoothness of rotation.

[0012] Preferably, the guardrail is further provided with a hanger, the hanger is provided with a storage box, and the operating device is placed in the storage box.

[0013] By adopting the above technical solution, the storage box is used to store operating equipment, making it convenient for users to retrieve the operating equipment when needed.

[0014] Preferably, a dust cover is fixed on the hanger, one side of the storage box is open, the storage box and the dust cover slide together, and a first transmission assembly is provided between the drive motor and the storage box.

[0015] By adopting the above technical solution, since the operating device contains VR glasses, in order to reduce the exposure of VR glasses to the outside and prevent dust in the air from adhering to the lenses of VR glasses, the motor can be driven to move the storage box so that the storage box can be stored inside the dust cover to achieve dust prevention.

[0016] Preferably, the first transmission assembly includes a third belt drive mechanism, a transmission gear, and a transmission rack. One of the pulleys of the third belt drive mechanism is coaxially fixed to the output shaft of the drive motor. The transmission gear is rotatably supported within the dust cover. The transmission gear is coaxially fixed to the other pulley of the third belt drive mechanism. The transmission rack is fixed to the side wall of the storage box, and the transmission rack meshes with the transmission gear.

[0017] By adopting the above technical solution, the drive motor is started, the output shaft of the drive motor rotates, and then drives one of the pulleys of the third belt drive mechanism to rotate. Under the transmission action of the belt of the third belt drive mechanism, the transmission rack rotates. Since the transmission rack and the transmission gear mesh with each other, the transmission rack moves, realizing the sliding movement of the storage box.

[0018] Preferably, a guide rod is vertically fixed to the top of the storage box, and a guide groove is provided on the side wall of the dust cover, with the guide rod slidably disposed in the guide groove.

[0019] By adopting the above technical solution, the guide groove limits the movement trajectory of the guide rod, thereby improving the stability of the storage box sliding.

[0020] Preferably, the side wall of the guardrail is slidably equipped with an electric spray head, which is connected to a liquid storage tank containing cleaning fluid.

[0021] By adopting the above technical solution, the electric spray head can disinfect the VR all-in-one machine, reducing the spread of germs in public places through users of the VR all-in-one machine.

[0022] Preferably, the electric nozzle is slidably disposed in the horizontal direction, and a second transmission component is disposed between the electric nozzle and the first belt drive mechanism.

[0023] By adopting the above technical solution, the electric nozzle can slide horizontally, thus increasing its working range.

[0024] Preferably, the second transmission assembly includes a second bevel gear set, a screw, and a slider. In the second bevel gear set, one bevel gear is coaxially arranged with one pulley of the first belt drive mechanism, and the other bevel gear of the second bevel gear set is coaxially fixed with the screw. The screw is rotatably supported on the guardrail, and the slider is threaded onto the outside of the screw. The electric nozzle is mounted on the slider.

[0025] By adopting the above technical solution, the drive motor is started, and the output shaft of the drive motor drives one of the pulleys of the first belt transmission mechanism to rotate, so that one of the bevel gears of the second bevel gear group rotates. Under the transmission of the other bevel gear of the second bevel gear group, the screw rotates. Since the slider is threaded on the screw, the electric nozzle can move in the horizontal direction.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. When in use, the user stands on the upper surface of the base and operates the all-in-one machine through the operating device. During this process, the drive component is activated, which drives the guard plate to rotate so that the guardrail and guard plate can surround the all-in-one machine and the user, reducing the possibility of 3D dizziness when using the VR all-in-one machine, which may lead to falls due to discomfort. This protects the user and improves the safety of the VR all-in-one machine. 2. Since the operating device includes VR glasses, in order to reduce the exposure of the VR glasses to the outside and prevent dust in the air from adhering to the lenses of the VR glasses, the motor can be driven to move the storage box so that the storage box can be stored inside the dust cover to achieve dust prevention; 3. The electric spray nozzle can disinfect the VR all-in-one machine, reducing the spread of germs in public places through users of the VR all-in-one machine. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0028] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0029] Figure 3 yes Figure 1 A structural diagram from another perspective.

[0030] Explanation of reference numerals in the attached drawings: 1. Base; 11. Anti-slip pad; 12. Mounting rod; 2. Integrated machine body; 3. Operating equipment; 31. VR glasses; 32. VR handle; 4. Hanger; 41. Storage box; 411. Partition; 412. Guide rod; 42. Dust cover; 421. Guide groove; 43. Bearing rod; 5. Protective component; 51. Guardrail; 511. Rotating shaft; 512. Bearing seat; 52. Protective plate; 6. Drive component; 61. Drive motor; 611. First bevel gear set; 62. First belt drive mechanism; 621. Second belt drive mechanism; 7. First transmission component; 71. Third belt drive mechanism; 72. Transmission rack; 8. Electric nozzle; 9. Liquid storage tank; 10. Second transmission component; 101. Second bevel gear set; 102. Screw; 103. Slider. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0032] This application discloses an all-in-one VR operating system. (Refer to...) Figure 1 and Figure 2 A VR all-in-one device includes a base 1, an all-in-one device body 2, and an operating device 3. The base 1 is rectangular and is placed on the ground. An anti-slip pad 11 is fixed to the upper surface of the base 1. In this embodiment, the anti-slip pad 11 is made of silicone with a certain degree of anti-slip properties. The all-in-one device body 2 is a VR all-in-one device, mounted on the upper surface of the base 1. Correspondingly, the operating device 3 includes VR glasses 31 and VR controllers 32, which are electrically connected to the all-in-one device body 2. Specifically, a hanger 4 is provided above the base 1, and a storage box 41 is provided on the hanger 4. The operating device 3 is stored in the storage box 41. Specifically, the side wall of the storage box 41 is open, and multiple partitions 411 are fixed along its length inside the storage box 41. The partitions 411 divide the interior of the storage box 41 into multiple storage spaces. The operating device 3 is placed in one of the storage spaces, while the remaining storage spaces can be used by the user to store items while using the VR all-in-one device.

[0033] In addition, a protective component 5 is provided on the base 1. The protective component 5 includes a guardrail 51 and a protective plate 52. Several mounting rods 12 are vertically fixed on the upper surface of the base 1. The mounting rods 12 are vertically arranged. The lower surface of the guardrail 51 is vertically fixed to the mounting rods 12. The hanger 4 is fixed to the upper surface of the guardrail 51. At the same time, the guardrail 51 is semi-open, that is, the cross-section of the guardrail 51 is U-shaped. The guardrail 51 is horizontally placed and surrounds the outside of the integrated machine body 2, with the opening of the guardrail 51 facing the front of the integrated machine body 2. Meanwhile, the protective plate 52 rotates and is supported on the upper surface of the guardrail 51. When the protective plate 52 rotates at a certain angle, the guardrail 51 and the protective plate 52 surround the integrated machine body 2. Correspondingly, the guardrail 51 is provided with a drive component 6 for driving the rotation of the protective plate 52.

[0034] Therefore, when in use, the user stands on the upper surface of the base 1 and operates the all-in-one machine body 2 through the operating device 3. During this process, the drive component 6 is activated, and the drive component 6 drives the guard plate 52 to rotate so that the guardrail 51 and the guard plate 52 can surround the all-in-one machine body 2 and the user, reducing the possibility of 3D dizziness when using the VR all-in-one machine, which may lead to falls due to discomfort. This provides protection for the user and improves the safety of the VR all-in-one machine.

[0035] Specifically, the drive assembly 6 includes a drive motor 61 and a first belt drive mechanism 62. The drive motor 61 is fixed to the back of the hanger 4, and its output shaft is horizontally positioned. Correspondingly, two pulleys of the first belt drive mechanism 62 are rotatably supported on the upper surface of the guardrail 51 and are spaced apart horizontally. The upper surface of the guardrail 51 rotatably supports a vertically positioned rotating shaft 511, and one pulley of the first belt drive mechanism 62 is coaxially fixed to this rotating shaft 511. Meanwhile, the output shaft of the drive motor 61 passes through the side wall of the hanger 4, and a first bevel gear set 611 is provided between the end of the drive motor 61's output shaft and the rotating shaft 511. The first bevel gear set 611 consists of two mutually perpendicular and meshing bevel gears. Furthermore, the other pulley of the first belt drive mechanism 62 is coaxially fixed to the guard plate 52.

[0036] Therefore, when the drive motor 61 is started, the output shaft of the drive motor 61 rotates, which in turn drives one of the bevel gears of the first bevel gear set 611 to rotate. Under the transmission of the other bevel gear of the first bevel gear set 611, the rotating shaft 511 rotates, which further drives one of the pulleys of the first belt drive mechanism 62 to rotate. Under the belt drive of the first belt drive mechanism 62, the other pulley of the first belt drive mechanism 62 and the guard plate 52 rotate, thereby realizing the rotation of the guard plate 52.

[0037] Reference Figure 2 and Figure 3 Furthermore, two guard plates 52 are provided, and the two guard plates 52 are rotatably supported at both ends of the guardrail 51. At the same time, two sets of first belt drive mechanisms 62 are provided, and the two sets of first belt drive mechanisms 62 act on the two guard plates 52 respectively. A second belt drive mechanism 621 is provided between the two sets of first belt drive mechanisms 62, and the second belt drive mechanism 621 is used to realize the transmission of the two sets of first belt drive mechanisms 62.

[0038] Specifically, one of the pulleys of the second belt drive mechanism 621 is coaxially fixed on the output shaft of the drive motor 61, and the other pulley of the second belt drive mechanism 621 is rotatably supported on the back of the hanger 4. Correspondingly, the other side of the guardrail 51 is also rotatably supported by another rotating shaft 511, and the rotating shaft 511 and the other pulley of the second belt drive mechanism 621 are also driven by another set of first bevel gears 611.

[0039] Correspondingly, the drive motor 61 is started, and the output shaft of the drive motor 61 rotates, driving one of the pulleys of the second belt drive mechanism 621 to rotate. Under the belt drive of the second belt drive mechanism 621, the bevel gears in the other set of first bevel gears 611 rotate, which also enables the other set of first belt drive mechanisms 62 to operate, causing the two guard plates 52 to rotate simultaneously, and the rotation directions of the two guard plates 52 are opposite, so that the guard plates 52 can be opened and closed accordingly.

[0040] Therefore, dividing the guard plate 52 into two pieces reduces its relative length and improves the smoothness of rotation. Furthermore, if the guard plate 52 were a single piece, its rotation radius would be larger than that of the split guard plate 52 in this embodiment, resulting in a larger space requirement and inconvenience during rotation. By dividing the guard plate 52 into two pieces, its rotation radius is indirectly reduced, thus reducing the space required for rotation.

[0041] On the other hand, since the VR operating all-in-one machine described in this application is usually used in public places, where there is a large flow of people, the environment in which the VR operating all-in-one machine is located may generate dust due to the flow of people. The embodiments of this application adopt the following solution to this problem.

[0042] Specifically, a dust cover 42 is fixed to the top of the hanger 4. The dust cover 42 is rectangular in shape, with its opening facing downwards, and is located above the all-in-one machine body 2. Simultaneously, the storage box 41 slides in conjunction with the dust cover 42, meaning the storage box 41 slides vertically. Correspondingly, a first transmission component 7 is provided between the drive motor 61 and the storage box 41. When the storage box 41 is fully housed within the dust cover 42, the side wall of the storage box 41 abuts against the inner wall of the dust cover 42, sealing the opening of the storage box 41. This reduces the exposure of the VR glasses 31 to the outside, allowing airborne dust to adhere to the lenses of the VR glasses 31, thus protecting the storage box 41 from dust.

[0043] Specifically, the first transmission assembly 7 includes a third belt drive mechanism 71, a transmission gear (not shown in the figure), and a transmission rack 72. One pulley of the third belt drive mechanism 71 is coaxially fixed to the output shaft of the drive motor 61. Meanwhile, a support rod 43 is rotatably supported on the hanger 4, and the other pulley of the third belt drive mechanism 71 is coaxially fixed to the support rod 43. In addition, one end of the support rod 43 passes through the dust cover 42 and is rotatably supported on the inner wall of the dust cover 42. At the same time, the transmission gear is coaxially fixed to the support rod 43 and located inside the dust cover 42. The transmission rack 72 is vertically fixed to the top of the storage box 41 and is arranged in a vertical direction. In this embodiment, the storage box 41 is made of relatively lightweight plastic.

[0044] Meanwhile, a guide rod 412 is vertically fixed to the top of the storage box 41. The guide rod 412 is parallel to the transmission rack 72. Two guide grooves 421 are opened on the side wall of the dust cover 42. The guide rod 412 and the transmission rack 72 are respectively slidably disposed in the two guide grooves 421.

[0045] Correspondingly, the drive motor 61 is started, and the output shaft of the drive motor 61 rotates, thereby driving one of the pulleys of the third belt drive mechanism 71 to rotate. Under the transmission action of the belt in the third belt drive mechanism 71, the transmission rack 72 rotates. Since the transmission rack 72 meshes with the transmission gear, the transmission rack 72 moves, realizing the sliding movement of the storage box 41. At the same time, during this process, the guide groove 421 limits the movement trajectory of the guide rod 412 and the transmission rack 72, so that the transmission rack 72 and the guide rod 412 can only slide in the vertical direction, thereby improving the stability of the sliding of the storage box 41.

[0046] On the other hand, an electric nozzle 8 is slidably installed on the side wall of the guardrail 51. The electric nozzle 8 is electrically connected to the processor inside the integrated machine body 2. At the same time, the electric nozzle 8 is connected to a liquid storage tank 9, which is installed on the side wall of the base 1. The electric nozzle 8 and the liquid storage tank 9 are connected by a hose, and the liquid storage tank 9 contains cleaning fluid.

[0047] Therefore, when a user uses the VR all-in-one device, the processor inside the device 2 will control the electric nozzle 8 to turn on. The electric nozzle 8 will draw cleaning fluid from the storage tank 9 and spray it onto the device 2 and the user, thereby disinfecting and reducing the spread of germs in public places through the user of the VR all-in-one device.

[0048] Furthermore, in order to improve the working range of the electric nozzle 8, the electric nozzle 8 in this embodiment is slidably arranged in the horizontal direction, and a second transmission component 10 is provided between the electric nozzle 8 and the rotating shaft 511.

[0049] Specifically, the second transmission assembly 10 includes a second bevel gear set 101, a screw 102, and a slider 103. Two bearing seats 512 are fixed to the lower surface of the guardrail 51, and the screw 102 is rotatably supported on the two bearing seats 512. The second bevel gear set 101 also consists of two mutually perpendicular and meshing bevel gears. One bevel gear of the second bevel gear set 101 is coaxially fixed to one of the rotating shafts 511, while the other bevel gear of the second bevel gear set 101 is coaxially fixed to the screw 102. Furthermore, the slider 103 is threaded onto the outside of the screw 102. The slider 103 is rectangular in shape, and its upper surface abuts against the lower surface of the guardrail 51. The electric nozzle 8 is mounted on the slider 103.

[0050] Therefore, when the drive motor 61 is started, the output shaft of the drive motor 61 drives one of the pulleys of the first belt transmission mechanism 62 to rotate, thereby causing one of the bevel gears of the second bevel gear set 101 to rotate. Under the transmission of the other bevel gear of the second bevel gear set 101, the screw 102 rotates. Since the slider 103 is threaded onto the screw 102, the electric nozzle 8 can move in the horizontal direction. Furthermore, since the electric nozzle 8 can slide in the horizontal direction, the working range of the electric nozzle 8 is increased, thereby further improving the disinfection effect of the electric nozzle 8.

[0051] The implementation principle of this application embodiment of the VR operating all-in-one machine is as follows: During use, the user stands on the upper surface of the base 1 and operates the all-in-one machine body 2 through the operating device 3. During this process, the drive motor 61 is started, and the output shaft of the drive motor 61 rotates, thereby driving one of the bevel gears of the first bevel gear set 611 to rotate. Under the transmission of the other bevel gear of the first bevel gear set 611, the rotating shaft 511 rotates, which further drives one of the pulleys of the first belt drive mechanism 62 to rotate. Under the belt drive of the first belt drive mechanism 62, the other pulley of the first belt drive mechanism 62 and the guard plate 52 rotate, thereby realizing the rotation of the guard plate 52. At the same time, one of the pulleys of the second belt drive mechanism 621 rotates. Under the belt drive of the second belt drive mechanism 621, the bevel gear in another set of first bevel gear sets 611 rotates, which also enables the other set of first belt drive mechanisms 62 to operate, so that the two guard plates 52 rotate simultaneously, and the rotation directions of the two guard plates 52 are opposite, so that the guard plates 52 can be opened and closed accordingly. This allows the guardrail 51 and guard plate 52 to enclose the all-in-one machine body 2 and the user, reducing the possibility of 3D motion sickness or falls due to discomfort when using the VR all-in-one machine, thus protecting the user and improving the safety of the VR all-in-one machine.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A VR operation integrated machine matched with, characterized in that: The device includes a base (1), an integrated machine body (2), and an operating device (3). The base (1) is erected on the ground, the integrated machine body (2) is installed on the upper surface of the base (1), and the operating device (3) is set on the base (1). The operating device (3) is used to operate the integrated machine body (2). The base (1) is also provided with a protective component (5). The protective component (5) includes a guardrail (51) and a guard plate (52). The guardrail (51) is semi-open and is arranged around the outside of the integrated machine body (2). The guard plate (52) is rotatably supported on the guardrail (51). When the guard plate (52) rotates at a certain angle, the guardrail (51) and the guard plate (52) surround the integrated machine body (2). The guardrail (51) is provided with a driving component (6) for driving the guard plate (52) to rotate.

2. The VR operation integrated machine of claim 1, wherein: The drive assembly (6) includes a drive motor (61) and a first belt drive mechanism (62). The drive motor (61) and the first belt drive mechanism (62) are both mounted on the guardrail (51). The drive motor (61) drives one of the pulleys of the first belt drive mechanism (62) to rotate. The other pulley of the first belt drive mechanism (62) is coaxially fixed with the guard plate (52).

3. The VR operation integrated machine of claim 2, wherein: Two guard plates (52) are provided, and the two guard plates (52) are rotatably supported on both ends of the guardrail (51). Two sets of first belt drive mechanisms (62) are provided, and the two sets of first belt drive mechanisms (62) act on the two guard plates (52) respectively. A second belt drive mechanism (621) is provided between the two sets of first belt drive mechanisms (62), and the second belt drive mechanism (621) is used to realize the transmission of the two sets of first belt drive mechanisms (62).

4. The VR operation integrated machine of claim 2, wherein: The guardrail (51) is also provided with a hanger (4), and a storage box (41) is provided on the hanger (4). The operating device (3) is placed in the storage box (41).

5. The VR operation integrated machine of claim 4, wherein: A dust cover (42) is fixed on the hanger (4), and one side of the storage box (41) is open. The storage box (41) and the dust cover (42) slide together. A first transmission assembly (7) is provided between the drive motor (61) and the storage box (41).

6. The VR operation integrated machine of claim 5, wherein: The first transmission assembly (7) includes a third belt drive mechanism (71), a transmission gear, and a transmission rack (72). One of the pulleys of the third belt drive mechanism (71) is coaxially fixed with the output shaft of the drive motor (61). The transmission gear is rotatably supported inside the dust cover (42). The transmission gear is coaxially fixed with the other pulley of the third belt drive mechanism (71). The transmission rack (72) is fixed to the side wall of the storage box (41). The transmission rack (72) meshes with the transmission gear.

7. The VR operation integrated machine of claim 5, wherein: The top of the storage box (41) is vertically fixed with a guide rod (412), and the side wall of the dust cover (42) is provided with a guide groove (421), and the guide rod (412) is slidably disposed in the guide groove (421).

8. The VR operation integrated machine of claim 2, wherein: An electric spray head (8) is slidably installed on the side wall of the guardrail (51), and the electric spray head (8) is connected to a liquid storage tank (9), which contains cleaning liquid.

9. The VR operation all-in-one device according to claim 8, wherein: The electric nozzle (8) is slidably disposed in the horizontal direction, and a second transmission assembly (10) is disposed between the electric nozzle (8) and the first belt drive mechanism (62).

10. The VR operation integrated machine of claim 9, wherein: The second transmission assembly (10) includes a second bevel gear set (101), a screw (102), and a slider (103). The second bevel gear set (101) has one bevel gear coaxially arranged with one pulley of the first belt drive mechanism (62). The other bevel gear of the second bevel gear set (101) is coaxially fixed with the screw (102). The screw (102) is rotatably supported on the guardrail (51). The slider (103) is threaded onto the outside of the screw (102). The electric nozzle (8) is mounted on the slider (103).

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