All-optical network interface device
Through the all-optical network interface device controlled by rolling ball and cylinder, the problems of cruise ship swaying and seawater corrosion are solved, and the stable fixation and protection of the device is achieved, which extends the service life and simplifies the maintenance process.
Patent Information
- Application Number
- CN202510902492.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-01
- Publication Date
- 2025-08-01
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing all-optical network interface device is prone to loosening of screws due to shaking when installed on cruise ships, and is susceptible to seawater corrosion. It requires frequent inspection and repair, which wastes manpower and the device is prone to damage.
The rolling ball is used to shake in the rolling groove, and the extrusion rod extrudes the shell. Combined with the cylinder, the air pressure of the suction cup is controlled to achieve the fixing and protection of the device to prevent disengagement and corrosion.
Effectively prevent the device from breaking away and corroding on cruise ships, extending service life, simplifying the maintenance process, and improving the stability and durability of the device.
Smart Images

Figure CN120405875A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of all-optical networks, and specifically to an all-optical network interface device. Background Art
[0002] An all-optical network is a network architecture completely based on optical signals. Data is transmitted in the form of light in optical fibers without the need to be converted into electrical signals. This method eliminates the delay in the electro-optical conversion process, improving the transmission efficiency and network performance. The all-optical network directly transmits optical signals through optical fibers and uses the characteristics of light waves for information encoding, transmission, and decoding. Data packets are transmitted in optical signals of different wavelengths in optical fibers, and each wavelength can carry independent information. This technology is called wavelength division multiplexing (WDM). In this way, the all-optical network can transmit multiple data streams simultaneously, significantly increasing the bandwidth. The application scenarios of the all-optical network are very extensive, covering various communication, data, and intelligent fields.
[0003] Existing all-optical network interface devices need to be fixedly connected to a cruise ship through screws, etc. When installed on a cruise ship, the screws may become loose due to long-term shaking on the cruise ship, resulting in the need to inspect the device, wasting manpower. At the same time, the device installed on the cruise ship may be damaged due to the corrosion of seawater, and the device often needs to be replaced and repaired. Summary of the Invention
[0004] The purpose of the present invention is to provide an all-optical network interface device. By using the force generated during the shaking of the cruise ship to drive the rolling balls to shake in the rolling grooves, the shaking of the rolling balls squeezes the extrusion rods on both sides of the rolling grooves, and the extrusion rods squeeze the outer shell, increasing the insertion effect between the outer shell and the insertion groove, preventing the outer shell from detaching, and enhancing the protection effect.
[0005] To achieve the above purpose, the present invention provides the following technical solution: An all-optical network interface device, including a base, a wire reel is connected to the base, a support leg is connected to the wire reel, a wire outlet is also connected to the wire reel, a rotation mechanism is also connected to the base, a fixing mechanism is also connected to the base, and a collision mechanism is also connected to the base; The rotation mechanism includes a threaded sleeve, two groups of racks that move inside the base are engaged with the threaded sleeve, fixing plates are connected to both groups of racks, and an outer shell is connected to the fixing plates; The fixing mechanism includes a cylinder arranged inside the base, a push rod is connected to the cylinder, a threaded piston rod is connected to the push rod, a sliding cylinder is also connected to the cylinder, a piston cylinder is connected to the threaded piston rod, and a suction cup is connected to the piston cylinder; The collision mechanism includes an extrusion rod inside the base, a rolling groove is connected to the extrusion rod, and a rolling ball is connected inside the rolling groove.
[0006] Preferably, the piston cylinder is connected to the threaded sleeve, and the sliding cylinder is also connected to the threaded sleeve. The threaded sleeve meshes with the threaded piston rod. A gap is provided between the piston cylinder and the sliding cylinder, and the threaded sleeve is located in the gap.
[0007] Preferably, two sets of first sliding grooves are provided on the base, and the size is adapted to the rack. The rack moves in the two sets of first sliding grooves.
[0008] Preferably, multiple sets of insertion holes are provided on the base, and the size is adapted to the support feet. The support feet are connected to the base through the insertion holes.
[0009] Preferably, a second sliding groove is provided on the base, and the size of the second sliding groove is adapted to the extrusion rod. The extrusion rod slides on the second sliding groove.
[0010] Preferably, one end of the extrusion rod away from the rolling groove is connected to a second anti-collision piece. The second anti-collision piece is connected to the outer shell, and the second anti-collision piece is made of an elastic material.
[0011] Preferably, a plugging groove is provided on the fixing plate, and the size of the plugging groove is adapted to the outer shell. The outer shell is plugged into the plugging groove.
[0012] Preferably, a first anti-collision piece is provided at one end of the extrusion rod close to the rolling ball. The first anti-collision piece is made of an elastic material.
[0013] Preferably, the threaded piston rod fits against the inner wall of the piston cylinder, and the piston cylinder is designed to be airtight.
[0014] Preferably, the rolling groove is designed to be hollow, and the internal size is adapted to the rolling ball. The rolling ball moves inside the rolling groove.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By using the force generated when the cruise ship sways to drive the rolling ball to sway in the rolling groove, the swaying of the rolling ball squeezes the extrusion rods on both sides of the rolling groove, and the extrusion rods squeeze the outer shell, increasing the plugging effect between the outer shell and the plugging groove, preventing the outer shell from detaching, and enhancing the protection effect.
[0016] 2. By driving the push rod to extend through the air cylinder, driving the threaded piston rod to slide in the piston cylinder, increasing the air pressure in the suction cup, reducing the adsorption of the suction cup on the ground, enabling the device to move, and facilitating the maintenance or movement of the device.
[0017] 3. In the present invention, the rotation of the threaded sleeve drives the rack to move in the reverse direction, which drives the fixing plate to approach the base, and drives the outer shell to approach the base, wrapping the wire reel, preventing the device from being corroded by seawater on the cruise ship, improving the service life of the device. At the same time, seawater preferentially corrodes the outer shell, and the outer shell can be replaced to ensure the protective effect of the outer shell. Description of the Drawings
[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of one of the partial structural formulas of the present invention; Figure 3 It is a schematic diagram of the partial outer shell structure of the present invention; Figure 4 It is a schematic diagram of the wire reel device of the present invention; Figure 5 It is a schematic diagram of the second of the partial structures of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of part A; Figure 7 It is a schematic diagram of the third of the partial structures of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of part B; Figure 9 It is a schematic diagram of the fourth of the partial structural formulas of the present invention.
[0019] In the figure: 1. Base; 11. Wire reel; 12. Support feet; 13. Wire release opening; 14. Insertion hole; 15. First sliding groove; 16. Insertion groove; 17. Second sliding groove; 2. Rotating mechanism; 21. Threaded sleeve; 22. Rack; 23. Fixing plate; 24. Outer shell; 3. Fixing mechanism; 31. Cylinder; 32. Push rod; 33. Threaded piston rod; 34. Piston cylinder; 35. Suction cup; 36. Sliding cylinder; 4. Collision mechanism; 41. Extrusion rod; 42. Rolling groove; 43. Rolling ball; 44. First anti-collision piece; 45. Second anti-collision piece. Detailed Description of the Invention
[0020] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.
[0021] The present invention provides an all-optical network interface device, which includes a base 1. A wire-receiving box 11 is connected to the base 1. A support leg 12 is connected to the wire-receiving box 11. A wire-releasing port 13 is also connected to the wire-receiving box 11. A rotating mechanism 2 is connected to the base 1. A fixing mechanism 3 is connected to the base 1. A collision mechanism 4 is connected to the base 1; The rotating mechanism 2 includes a threaded sleeve 21. Two groups of racks 22 that move inside the base 1 are engaged with the threaded sleeve 21. Fixing plates 23 are connected to both groups of racks 22. A housing 24 is connected to the fixing plates 23; The fixing mechanism 3 includes a cylinder 31 arranged inside the base 1. A push rod 32 is connected to the cylinder 31. A threaded piston rod 33 is connected to the push rod 32. A sliding cylinder 36 is also connected to the cylinder 31. A piston cylinder 34 is connected to the threaded piston rod 33. A suction cup 35 is connected to the piston cylinder 34; The collision mechanism 4 includes a pressing rod 41 inside the base 1. A rolling groove 42 is connected to the pressing rod 41. A rolling ball 43 is connected inside the rolling groove 42.
[0022] Before using this device, place the base 1 at a smooth and clean position. Drive the push rod 32 to contract through the cylinder 31. The movement of the push rod 32 drives the threaded piston rod 33 to move in the piston cylinder 34, reducing the air pressure in the suction cup 35, so that the suction cup 35 adsorbs the device to the ground, preventing the device from being damaged due to shaking on the cruise ship. At the same time, when the device needs to be moved or when the device is damaged and needs to be repaired, start the cylinder 31 to drive the push rod 32 to extend, driving the threaded piston rod 33 to slide in the piston cylinder 34, increasing the air pressure in the suction cup 35, so that the suction cup 35 reduces the adsorption to the ground, enabling the device to be moved, which is convenient for repairing or moving the device.
[0023] At the same time, when the threaded piston rod 33 moves, it drives the threaded sleeve 21 to rotate. When the threaded piston rod 33 moves downward, it drives the threaded sleeve 21 to rotate. The rotation of the threaded sleeve 21 drives the rack 22 to move in the first sliding groove 15. The movement of the rack 22 drives the fixing plate 23 to extend out of the base 1. The extension of the fixing plate 23 drives the housing 24 inserted on the fixing plate 23 to extend out synchronously. The extension of the housing 24 exposes the wire-receiving box 11, facilitating the staff to repair or inspect the device. After the inspection or repair is completed, start the cylinder 31 to drive the push rod 32 to move. The push rod 32 drives the threaded piston rod 33 to move upward. The threaded piston rod 33 drives the threaded sleeve 21 to rotate in the reverse direction. The rotation of the threaded sleeve 21 drives the rack 22 to move in the reverse direction, driving the fixing plate 23 to move closer to the base 1, driving the housing 24 to move closer to the base 1, and wrapping the wire-receiving box 11, preventing the device from being corroded by seawater on the cruise ship, improving the service life of the device. At the same time, seawater preferentially corrodes the housing, and the housing can be replaced to ensure the protective effect of the housing.
[0024] Meanwhile, the device is installed on a cruise ship. When the cruise ship sways, it drives the rolling ball 43 to sway in the rolling groove 42. The swaying of the rolling ball 43 squeezes and collides with the first anti-collision pieces 44 on both sides of the rolling groove 42. The first anti-collision pieces 44 drive the extrusion rod 41 to squeeze the second anti-collision piece 45, and the second anti-collision piece 45 squeezes the outer shell 24, increasing the insertion of the outer shell 24 into the insertion groove 16, preventing the outer shell 24 from detaching, and enhancing the protection effect.
[0025] In an alternative embodiment, the piston cylinder 34 is connected to the threaded sleeve 21, and the sliding cylinder 36 is also connected to the threaded sleeve 21. The threaded sleeve 21 meshes with the threaded piston rod 33. There is a gap between the piston cylinder 34 and the sliding cylinder 36, and the threaded sleeve 21 is located in the gap.
[0026] It should be noted that the piston cylinder 34 and the sliding cylinder 36 squeeze the threaded sleeve 21, restricting the threaded sleeve 21 in the gap and causing it to rotate as the threaded piston rod 33 moves, ensuring the operation of the device. At the same time, when the threaded piston rod 33 moves downward, the air pressure in the suction cup 35 decreases, reducing the adsorption force of the suction cup 35 on the ground and the fixing effect of the suction cup 35, enabling the device to move. When the threaded piston rod 33 moves upward, the air pressure in the suction cup 35 increases, increasing the adsorption force of the suction cup 35 on the ground and the fixing effect of the suction cup 35.
[0027] In an alternative embodiment, two sets of first sliding grooves 15 are provided on the base 1, and their dimensions are adapted to the rack 22. The rack 22 moves in the two sets of first sliding grooves 15.
[0028] It should be noted that the rack 22 slides in the first sliding groove 15. The movement of the rack 22 drives the fixed plate 23 to move, and the movement of the fixed plate 23 drives the outer shell 24 to move, controlling the opening and closing of the outer shell 24. When it is opened, it is convenient to inspect and repair the device, and when it is closed, it is convenient to protect the device from being corroded by seawater.
[0029] In an alternative embodiment, multiple sets of insertion holes 14 are provided on the base 1, and their dimensions are adapted to the support feet 12. The support feet 12 are connected to the base 1 through the insertion holes 14.
[0030] It should be noted that the support feet 12 are inserted into the insertion holes 14 to fix the wire reel 11 on the base 1, facilitating the protection of the device.
[0031] In an alternative embodiment, a second sliding groove 17 is provided on the base 1, and its dimensions are adapted to the extrusion rod 41. The extrusion rod 41 slides on the second sliding groove 17.
[0032] It should be noted that when the ship shakes, it drives the rolling ball 43 to shake. The shaking of the rolling ball 43 squeezes the extrusion rod 41, driving the extrusion rod 41 to move, driving the extrusion rod 41 to slide in the second sliding groove 17, driving the extrusion rod 41 to squeeze the second anti-collision piece 45, and the second anti-collision piece 45 squeezes the outer shell 24, enhancing the insertion effect between the outer shell 24 and the insertion groove 16.
[0033] In an alternative embodiment, a second anti-collision piece 45 is connected to one end of the extrusion rod 41 away from the rolling groove 42. The second anti-collision piece 45 is connected to the outer shell 24, and the second anti-collision piece 45 is made of an elastic material.
[0034] It should be noted that the rolling ball 43 rolls and impacts the first anti-collision piece 44. The first anti-collision piece 44 squeezes the extrusion rod 41, the extrusion rod 41 squeezes the second anti-collision piece 45, and the second anti-collision piece 45 squeezes the outer shell 24. The first anti-collision piece 44 and the second anti-collision piece 45 protect the extrusion rod 41 and the outer shell 24, preventing damage to the extrusion rod 41 and the outer shell 24 caused by extrusion and affecting the normal use of the device.
[0035] In an alternative embodiment, an insertion groove 16 is provided on the fixing plate 23. The size of the insertion groove 16 is adapted to the outer shell 24, and the outer shell 24 is inserted into the insertion groove 16.
[0036] It should be noted that the rack 22 is connected to the fixing plate 23. The movement of the rack 22 drives the fixing plate 23 to move, driving the outer shell 24 inserted on the fixing plate 23 to move for opening and closing. When closed, it plays a protective role for the device, preventing the inside of the device from being corroded by seawater. When opened, it is convenient for the staff to inspect and repair the device.
[0037] In an alternative embodiment, a first anti-collision piece 44 is provided at one end of the extrusion rod 41 close to the rolling ball 43. The first anti-collision piece 44 is made of an elastic material.
[0038] It should be noted that the rolling ball 43 shakes and squeezes the first anti-collision pieces 44 on both sides. The squeezed first anti-collision pieces 44 drive the extrusion rod 41 to move. The first anti-collision pieces 44 protect the extrusion rod 41, preventing the rolling ball 43 from directly squeezing the extrusion rod 41 and causing damage to the extrusion rod 41, ensuring the normal operation of the device.
[0039] In an alternative embodiment, the threaded piston rod 33 fits against the inner wall of the piston cylinder 34, and the piston cylinder 34 is designed to be airtight.
[0040] It should be noted that the threaded piston rod 33 fits against the piston cylinder 34, ensuring the airtightness inside the suction cup 35, ensuring the adsorption force of the suction cup 35 on the ground, and ensuring the fixing effect of the device.
[0041] In an alternative embodiment, the rolling groove 42 is hollow-designed, and its internal dimensions are adapted to the rolling ball 43. The rolling ball 43 moves inside the rolling groove 42.
[0042] It should be noted that the rolling ball 43 moves inside the rolling groove 42. The rolling groove 42 restricts the rolling ball 43 to prevent the rolling ball 43 from shaking excessively and detaching from the device, ensuring that the shaking of the rolling ball 43 will squeeze the first anti-collision piece 44 and strike the outer shell 24, enhancing the insertion of the insertion groove 16 into the outer shell 24.
[0043] Working principle: This device is installed on a cruise ship. Before use, place the base 1 at a smooth and clean position. Drive the push rod 32 to contract through the air cylinder 31. The movement of the push rod 32 drives the threaded piston rod 33 to move in the piston cylinder 34, reducing the air pressure in the suction cup 35, so that the suction cup 35 adsorbs the device to the ground, preventing the device from being damaged due to shaking on the cruise ship. At the same time, when the device needs to be moved or repaired due to damage, start the air cylinder 31 to drive the push rod 32 to extend, driving the threaded piston rod 33 to slide in the piston cylinder 34, increasing the air pressure in the suction cup 35, so that the suction cup 35 reduces the adsorption to the ground, enabling the device to be moved, facilitating the repair or movement of the device.
[0044] At the same time, when the threaded piston rod 33 moves, it drives the threaded sleeve 21 to rotate. When the threaded piston rod 33 moves downward, it drives the threaded sleeve 21 to rotate. The rotation of the threaded sleeve 21 drives the rack 22 to move in the first sliding groove 15. The movement of the rack 22 drives the fixing plate 23 to extend from the base 1. The extension of the fixing plate 23 drives the outer shell 24 inserted on the fixing plate 23 to extend synchronously. The extension of the outer shell 24 exposes the wire reel 11, facilitating the maintenance or inspection of the device by the staff. After the inspection or maintenance is completed, start the air cylinder 31 to drive the push rod 32 to move. The push rod 32 drives the threaded piston rod 33 to move upward. The threaded piston rod 33 drives the threaded sleeve 21 to rotate in the reverse direction. The rotation of the threaded sleeve 21 drives the rack 22 to move in the reverse direction, driving the fixing plate 23 to move closer to the base 1, driving the outer shell 24 to move closer to the base 1, and wrapping the wire reel 11 to prevent the device from being corroded by seawater on the cruise ship, improving the service life of the device. At the same time, seawater preferentially corrodes the outer shell, and the outer shell can be replaced to ensure the protective effect on the device.
[0045] At the same time, the device is installed on a cruise ship. When the cruise ship shakes, it drives the rolling ball 43 to shake in the rolling groove 42. The shaking of the rolling ball 43 squeezes and collides with the first anti-collision pieces 44 on both sides of the rolling groove 42. The first anti-collision piece 44 drives the extrusion rod 41 to squeeze the second anti-collision piece 45. The second anti-collision piece 45 squeezes the outer shell 24, increasing the insertion of the outer shell 24 into the insertion groove 16, preventing the outer shell 24 from detaching, and enhancing the protection effect.
[0046] The piston cylinder 34 and the sliding cylinder 36 squeeze the threaded sleeve 21, limiting the threaded sleeve 21 in the gap, and rotating along with the movement of the threaded piston rod 33 to ensure the operation of the device. At the same time, the threaded piston rod 33 moves downward to reduce the air pressure in the suction cup 35, reduce the adsorption force of the suction cup 35 on the ground, and reduce the fixing effect of the suction cup 35, so that the device can move. At the same time, the threaded piston rod 33 moves upward to increase the air pressure in the suction cup 35, increase the adsorption force of the suction cup 35 on the ground, and increase the fixing effect of the suction cup 35. The rack 22 slides in the first sliding groove 15, and the sliding of the rack 22 drives the fixed plate 23 to move, and the movement of the fixed plate 23 drives the outer shell 24 to move, controlling the opening and closing of the outer shell 24. When opened, it is convenient to inspect and maintain the device, and when closed, it is convenient to protect the device to avoid corrosion by seawater. The support foot 12 is plugged into the socket 14 , fixing the wire take-up box 11 on the base 1 is convenient for protecting the device. When the ship rocks, the rolling ball 43 is driven to rock, and the rocking of the rolling ball 43 squeezes the squeezing rod 41, driving the squeezing rod 41 to move, driving the squeezing rod 41 to slide in the second sliding groove 17, driving the squeezing rod 41 to squeeze the second anti-collision plate 45, and the second anti-collision plate 45 squeezes the shell 24, enhancing the plugging effect between the shell 24 and the plug-in slot 16. The rolling ball 43 rolls and collides with the first anti-collision plate 44, and the first anti-collision plate 44 squeezes the squeezing rod 41, and the squeezing rod 41 squeezes the second anti-collision plate 45, and the second anti-collision plate 45 squeezes the shell 24. The first anti-collision plate 44 and the second anti-collision plate 45 protect the squeezing rod 41 and the shell 24 to prevent the squeezing rod 41 and the shell 24 from being damaged and affecting the normal use of the device.
[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. An all-optical network interface device, comprising a base (1), characterized in that, A wire reel case (11) is connected to the base (1). A support leg (12) is connected to the wire reel case (11). A wire outlet (13) is also connected to the wire reel case (11). A rotating mechanism (2) is also connected to the base (1). A fixing mechanism (3) is also connected to the base (1). A collision mechanism (4) is also connected to the base (1); The rotating mechanism (2) includes a threaded sleeve (21). Two groups of racks (22) that move inside the base (1) are engaged with the threaded sleeve (21). Fixing plates (23) are connected to both groups of racks (22). A housing (24) is connected to the fixing plates (23); The fixing mechanism (3) includes a cylinder (31) arranged inside the base (1). A push rod (32) is connected to the cylinder (31). A threaded piston rod (33) is connected to the push rod (32). A sliding cylinder (36) is also connected to the cylinder (31). A piston cylinder (34) is connected to the threaded piston rod (33). A suction cup (35) is connected to the piston cylinder (34); The collision mechanism (4) includes a pressing rod (41) inside the base (1). A rolling groove (42) is connected to the pressing rod (41). A rolling ball (43) is connected inside the rolling groove (42).
2. The all-optical network interface device according to claim 1, characterized in that The piston cylinder (34) is connected to the threaded sleeve (21). The sliding cylinder (36) is also connected to the threaded sleeve (21). The threaded sleeve (21) is engaged with the threaded piston rod (33). A gap is provided between the piston cylinder (34) and the sliding cylinder (36). The threaded sleeve (21) is located in the gap.
3. The all-optical network interface device according to claim 1, characterized in that Two groups of first sliding grooves (15) are provided on the base (1), and the size is adapted to the rack (22). The rack (22) moves in the two groups of first sliding grooves (15).
4. An all-optical network interface device according to claim 1, characterized in that, Multiple groups of insertion holes (14) are provided on the base (1), and the size is adapted to the support leg (12). The support leg (12) is connected to the base (1) through the insertion holes (14).
5. The all-optical network interface device according to claim 1, characterized in that A second sliding groove (17) is provided on the base (1). The size of the second sliding groove (17) is adapted to the pressing rod (41). The pressing rod (41) slides on the second sliding groove (17).
6. The all-optical network interface device according to claim 5, characterized in that One end of the pressing rod (41) far from the rolling groove (42) is connected to a second anti-collision piece (45). The second anti-collision piece (45) is connected to the housing (24). The second anti-collision piece (45) is made of an elastic material.
7. The all-optical network interface device according to claim 1, wherein An insertion groove (16) is provided on the fixing plate (23). The size of the insertion groove (16) is adapted to the housing (24). The housing (24) is inserted into the insertion groove (16).
8. The all-optical network interface device according to claim 1, characterized in that, One end of the pressing rod (41) close to the rolling ball (43) is provided with a first anti-collision piece (44). The first anti-collision piece (44) is made of an elastic material.
9. The all-optical network interface device according to claim 1, characterized in that The threaded piston rod (33) fits against the inner wall of the piston cylinder (34). The piston cylinder (34) is designed to be airtight.
10. A full-optical network interface device according to claim 1, characterized in that The rolling groove (42) is designed to be hollow, and the internal size is adapted to the rolling ball (43). The rolling ball (43) moves inside the rolling groove (42).