Portable dental medical chair

Abstract

The invention relates to the field of dental medical equipment, in particular to a portable dental medical chair. Comprising a base, a foot stool, a back frame, a back cushion, a supporting frame, a moving frame, a first connecting rod, a second connecting rod, a rotating shaft, a first belt, a guiding piece, a transmission mechanism and a rocker, the first connecting rod is rotationally arranged at one end of the base, the second connecting rod is fixedly arranged on the foot stool, the rotating shaft and the back cushion are arranged on the back frame, and the foot stool is rotationally connected with the base through the second connecting rod; the back frame is rotationally connected with the base through a rotating shaft, the supporting frame is rotationally arranged on the base, the moving frame is slidably arranged on the base, and the middle of the supporting frame is rotationally connected with the middle of the moving frame. Linkage unfolding of the foot frame, the back frame and the supporting frame is achieved through the belt transmission system, the medical chair can be rapidly unfolded or folded only by rotating the rocker, complex steps are not needed, and setting and storage time is saved.

Description

Technical Field

[0001] This invention relates to the field of dental medical devices, and more particularly to a portable dental chair. Background Technology

[0002] Dental chairs are mainly used for oral surgery and examination and treatment of oral diseases. They are usually equipped with adjustable backrests, seats, headrests and footrests, which can be adjusted in multiple angles and positions according to the patient's body shape and treatment needs to ensure the patient remains comfortable during long treatment sessions.

[0003] With the continuous expansion of dental medical services, especially in areas such as mobile clinics, emergency rescue, and medical support in remote areas, traditional fixed or large dental chairs with insufficient portability have gradually revealed their limitations. Some existing portable dental chairs rely on multi-step manual operation or complex linkage mechanisms, and the deployment process is cumbersome and time-consuming, which cannot meet the needs of rapid deployment in mobile clinics. Summary of the Invention

[0004] To overcome the drawbacks of existing portable dental chairs, which involve a cumbersome and time-consuming unfolding process, this invention provides a portable dental chair.

[0005] The technical solution is as follows: A portable dental chair includes a base, a footrest, a backrest, a back cushion, a support frame, a movable frame, a first connecting rod, a second connecting rod, a rotating shaft, a first belt, guide members, a transmission mechanism, and a rocker arm. The base has a first connecting rod rotatably mounted at one end. The footrest has a second connecting rod fixedly mounted on it. The backrest has a rotating shaft and a back cushion. The footrest is rotatably connected to the base via the second connecting rod. The backrest is rotatably connected to the base via the rotating shaft. The base has a support frame rotatably mounted on it. The base has a movable frame slidably mounted on it. The middle of the support frame is rotatably connected to the middle of the movable frame. The base has multiple guide members. The base has a first belt that sequentially passes over the first connecting rod, the second connecting rod, the guide members, and the rotating shaft. A transmission mechanism is provided between the second connecting rod and the support frame. A rocker arm is provided at one end of the first connecting rod.

[0006] As an improvement to the above solution, the transmission mechanism includes a transmission rod and a second belt. The transmission rod is rotatably mounted on the base, and both ends of the transmission rod are connected to the support frame. The second connecting rod and the transmission rod are wrapped with a second belt.

[0007] As an improvement to the above solution, it also includes a sliding rod, a limiting block, a first elastic element, and a fixing mechanism. One end of the transmission rod has a sliding groove, and the sliding rod is slidably installed in the sliding groove. The sliding rod is slidably connected to the support frame. A limiting groove is opened on the sliding rod, and the two ends of the limiting groove are inclined. A limiting block is slidably installed in both the transmission rod and the support frame. A first elastic element is connected to the limiting block. The first elastic element is connected to the transmission rod or the support frame. The limiting block is embedded in the limiting groove. One end of the limiting block near the sliding rod is inclined. A fixing mechanism for fixing the support frame is provided on the base.

[0008] As an improvement to the above solution, the fixing mechanism includes a fixing frame and fixing bolts. The fixing frame is provided on the base, and the fixing bolts are threadedly connected to the fixing frame. The support frame has multiple fixing holes, and the fixing bolts can be embedded into the fixing holes.

[0009] As an improvement to the above solution, the transmission rod is provided with a connecting hole, which is connected to the sliding groove.

[0010] As an improvement to the above solution, it also includes handrails, a movable rod, a second elastic element, and a pin. Two handrails are rotatably provided on the back frame, and a movable rod is slidably provided on the handrail. A second elastic element connects the handrail and the movable rod. A pin is slidably provided at one end of the movable rod. Multiple holes are opened on the back frame, and the pin can be inserted into the holes.

[0011] As an improvement to the above solution, it also includes guide rods and a placement rack. The back frame is equipped with two guide rods, and the placement rack is slidably mounted on the guide rods. The placement rack has multiple placement slots.

[0012] As an improvement to the above solution, it also includes a movable bracket, fasteners and lamps. The movable bracket is movably mounted on the back frame, the lamps are mounted on the movable bracket, and fasteners are provided at each joint of the movable bracket.

[0013] As an improvement to the above solution, it also includes a music player, a battery, a rotating frame, and a solar panel. Two music players are installed on the back pad, the battery is located on the side of the back pad near the back frame, the rotating frame is rotatably installed on the side of the back pad near the back frame, and the solar panel is slidably installed on the rotating frame. The lamp, solar panel, and music player are all electrically connected to the battery.

[0014] As an improvement to the above solution, it also includes a support plate, a fixing sleeve, a mounting pin, a third elastic element, and a fixing element. The bottom of the movable frame is provided with a rotating support plate, which is slidably connected to the support frame. The support plate is provided with multiple fixing sleeves, and the mounting pins are slidably provided inside the fixing sleeves. A third elastic element connects the fixing sleeves and the mounting pins. The fixing sleeves have fixing grooves on their sides, and the mounting pins have fixing elements on their sides. The fixing elements are slidably connected to the fixing grooves.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention uses a belt drive system (first belt + second belt) to realize the linkage and unfolding of the foot frame, back frame and support frame. The medical chair can be quickly unfolded or folded by simply rotating the rocker arm. No complicated steps are required, saving setup and storage time, significantly improving the efficiency and portability of diagnosis and treatment, and is particularly suitable for mobile diagnosis and treatment scenarios.

[0016] 2. This invention unlocks the linkage between the support frame and the transmission rod by moving the sliding rod, allowing direct manual adjustment of the support frame angle or the position of the moving frame to change the seat height. It can also change the angle of the leg / back frame without changing the height, to meet the needs of different patient body types and treatment.

[0017] 3. The present invention provides rigid locking for the independently adjusted support frame through a fixing mechanism (fixing frame, fixing bolt, fixing hole), preventing the support frame from moving accidentally during diagnosis and treatment, and ensuring patient safety and operational stability.

[0018] 4. This invention allows the armrest to be rotated to a horizontal position, and then the moving rod is pulled to align the pin with the corresponding insertion hole on the backrest at the current angle and insert it. This locks the armrest at the current angle, making it easier for the patient to place their arm and improving comfort.

[0019] 5. This invention can alleviate the anxiety of patients during dental surgery by setting up a music player; the power supply module composed of solar panels and batteries provides power to the lamps, solar panels and music player, adapting to the energy needs of outdoor or mobile scenarios.

[0020] 6. Through the design of components such as support plates, fixing sleeves, and mounting nails, this invention allows the mounting nails to be pressed down into soft soil when the equipment is deployed on uneven terrain in the field, and fixed by fixing parts and fixing grooves. This can effectively enhance the stability of the equipment in complex terrain and ensure normal use of the equipment. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a three-dimensional structural diagram of the base, legs, and back frame of the present invention.

[0023] Figure 3 This is a three-dimensional structural diagram of the first connecting rod, the second connecting rod, and the rotating shaft of the present invention.

[0024] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.

[0025] Figure 5 For the present invention Figure 3 Enlarged view of point B in the middle.

[0026] Figure 6 This is a three-dimensional structural diagram of the support frame and transmission rod of the present invention.

[0027] Figure 7 For the present invention Figure 6 A magnified view of point C in the middle.

[0028] Figure 8 This is an exploded view of the transmission rod, sliding rod, and fixing frame of the present invention.

[0029] Figure 9 This is a three-dimensional structural diagram of the handrail, movable rod, and second elastic element of the present invention.

[0030] Figure 10 This is a three-dimensional structural diagram of the guide rod and placement frame of the present invention.

[0031] Figure 11 This is a three-dimensional structural diagram of the movable bracket, fastener, and lamp of the present invention.

[0032] Figure 12 This is a three-dimensional structural diagram of the present invention when folded.

[0033] Figure 13 This is a three-dimensional structural diagram of the battery, rotating frame, and solar panel of the present invention.

[0034] Figure 14 This is a three-dimensional structural diagram of the support plate, fixing sleeve, and mounting pin of the present invention.

[0035] Figure 15 This is a cross-sectional view of the fixing sleeve of the present invention.

[0036] The markings in the diagram are as follows: 1-Base, 101-Seat cushion, 2-Foot frame, 201-Foot pad, 3-Back frame, 301-Back pad, 302-Insertion hole, 4-Support frame, 401-Fixing hole, 5-Moving frame, 6-First connecting rod, 7-Second connecting rod, 8-Rotating shaft, 9-First belt, 10-Rock arm, 11-Guide component, 12-Transmission rod, 1201-Sliding groove, 1202-Communicating hole, 13-Second belt, 14-Sliding rod, 1401-Limiting groove, 15-Limiting block, 1 6-First elastic element, 17-Fixed frame, 18-Fixing bolt, 19-Handrail, 20-Moving rod, 21-Second elastic element, 22-Pin, 23-Guide rod, 24-Placement frame, 2401-Placement slot, 25-Movable bracket, 26-Fastener, 27-Light fixture, 28-Music player, 29-Battery, 30-Rotating frame, 31-Solar panel, 32-Support plate, 33-Fixed sleeve, 34-Mounting nail, 35-Third elastic element, 36-Fixed element, 37-Fixed slot. Detailed Implementation

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0038] A portable dental chair, such as Figures 1-5 and Figure 12 As shown, the device includes a base 1, a seat cushion 101, a footrest 2, a foot pad 201, a backrest 3, a back pad 301, a support frame 4, a movable frame 5, a first connecting rod 6, a second connecting rod 7, a rotating shaft 8, a first belt 9, a guide 11, a transmission mechanism, and a rocker arm 10. The base 1 has a first connecting rod 6 rotatably mounted at one end, the footrest 2 has a second connecting rod 7 fixedly mounted on it, and the backrest 3 has a rotating shaft 8. The footrest 2 is rotatably connected to the base 1 via the second connecting rod 7, and the backrest 3 is rotatably connected to the base 1 via the rotating shaft 8. The base 1, footrest 2, and backrest 3 are connected in a rotatable manner. The frame 3 is equipped with a seat cushion 101, a foot pad 201, and a back pad 301 to provide patients with a comfortable treatment experience. The base 1 is rotatably equipped with a support frame 4 and a sliding frame 5. The middle of the support frame 4 and the middle of the sliding frame 5 are rotatably connected. The base 1 is equipped with multiple guide members 11 and a first belt 9. The first belt 9 passes through the first connecting rod 6, the second connecting rod 7, the guide members 11, and the rotating shaft 8 in sequence. A transmission mechanism is provided between the second connecting rod 7 and the support frame 4. One end of the first connecting rod 6 is equipped with a rocker arm 10.

[0039] In use, rotating the rocker arm 10 causes the first belt 9 to move via the first connecting rod 6. The first belt 9 then rotates the second connecting rod 7 and the rotating shaft 8, which in turn causes the legs 2 and the back frame 3 to rotate and unfold synchronously. At the same time, the rotation of the second connecting rod 7 is transmitted to the support frame 4 through the transmission mechanism, causing the support frame 4 to rotate on the base 1. The middle part of the support frame 4 is rotatably connected to the middle part of the movable frame 5. Therefore, the rotation of the support frame 4 will cause the movable frame 5 to slide on the base 1. Simply rotating the rocker arm 10 can achieve the rapid unfolding of the medical chair to meet the needs of diagnosis and treatment.

[0040] like Figures 3-6 As shown, the transmission mechanism includes a transmission rod 12 and a second belt 13. The transmission rod 12 is rotatably mounted on the base 1, and both ends of the transmission rod 12 are connected to the support frame 4. A second connecting rod 7 and the transmission rod 12 are wrapped with the second belt 13. When unfolded, the second connecting rod 7 drives the transmission rod 12 to rotate through the second belt 13, and the transmission rod 12 then transmits power to the support frame 4. The medical chair can be quickly unfolded simply by rotating the rocker arm 10.

[0041] like Figures 6-8As shown, it also includes a sliding rod 14, a limiting block 15, a first elastic element 16, and a fixing mechanism. One end of the transmission rod 12 has a sliding groove 1201, and the sliding rod 14 is slidably provided in the sliding groove 1201. The sliding rod 14 is slidably connected to the support frame 4. The sliding rod 14 has a limiting groove 1401, and the two ends of the limiting groove 1401 are inclined. The limiting block 15 is slidably provided in both the transmission rod 12 and the support frame 4. The first elastic element 16 is connected to the limiting block 15. The first elastic element 16 is connected to the transmission rod 12 or the support frame 4. The limiting block 15 is embedded in the limiting groove 1401. One end of the limiting block 15 near the sliding rod 14 is inclined. The base 1 is provided with a fixing mechanism for fixing the support frame 4. When the height of the medical chair needs to be adjusted individually, the sliding rod 14 is pulled outward from the sliding groove 1201. The inclined part of the upper limit groove 1401 of the sliding rod 14 will press the limiting block 15 in the transmission rod 12, and the limiting block 15 in the transmission rod 12 will disengage from the limiting groove 1401. At this time, the height of the medical chair can be adjusted directly by rotating the support frame 4 or sliding the movable frame 5, and fixed by the fixing mechanism. Similarly, when the angle of the footrest 2 and the backrest 3 needs to be adjusted individually, the sliding rod 14 is pressed towards the sliding groove 1201, and the upper limit groove 1401 of the sliding rod 14... The tilted part will press the limiting block 15 in the support frame 4, and the limiting block 15 in the support frame 4 will disengage from the limiting groove 1401. At this time, the angle of the foot frame 2 and the back frame 3 can be adjusted by the rocker arm 10. After adjusting the height of the medical chair or the angle of the foot frame 2 and the back frame 3, if it is necessary to fold the medical chair, the sliding rod 14 can be reset, and then the rocker arm 10 can be rotated. When the limiting block 15 is aligned with the limiting groove 1401 again, the limiting block 15 is embedded in the limiting groove 1401 under the action of the elastic element. At this time, the fixing mechanism can be released, and the rocker arm 10 can be rotated to fold the medical chair.

[0042] like Figures 6-8 As shown, the fixing mechanism includes a fixing frame 17 and fixing bolts 18. The fixing frame 17 is provided on the base 1, and the fixing bolts 18 are threadedly connected to the fixing frame 17. The support frame 4 has multiple fixing holes 401, into which the fixing bolts 18 can be inserted. After adjusting the height of the medical chair individually, the fixing bolts 18 are turned, and the fixing bolts 18 are inserted into the fixing holes 401 of the support frame 4, which can fix the support frame 4 and ensure that the medical chair remains stable after the height is adjusted.

[0043] The transmission rod 12 is provided with a connecting hole 1202, which is connected to the sliding groove 1201. The connecting hole 1202 connects the sliding groove 1201 with the external environment. When the sliding rod 14 slides in the sliding groove 1201, the connecting hole 1202 allows air to enter and exit freely, avoiding the generation of negative or positive pressure (i.e., pressure change) inside the sliding groove 1201. This significantly reduces the resistance when the sliding rod 14 moves, making the operation smoother and preventing the sliding rod 14 from moving and resetting due to pressure.

[0044] like Figure 9 As shown, the back frame 3 also includes handrails 19, a movable rod 20, a second elastic element 21, and a pin 22. Two handrails 19 are rotatably mounted on the back frame 3, and the movable rod 20 is slidably mounted on each handrail 19. A second elastic element 21 connects the handrails 19 and the movable rod 20. A pin 22 is slidably mounted on one end of the movable rod 20. Multiple insertion holes 302 are provided on the back frame 3, and the pin 22 can be inserted into the insertion holes 302. After adjusting the angle of the back frame 3, the handrails 19 can be rotated to a horizontal position. Then, the movable rod 20 is pulled so that the pin 22 on the movable rod 20 aligns with the insertion hole 302 on the back frame 3 corresponding to the current angle. The pin 22 is then inserted into the insertion hole 302, locking the handrails 19 at the current angle, providing stable hand support for the patient and improving comfort during the treatment process.

[0045] like Figure 10 As shown, it also includes guide rods 23 and a mounting bracket 24. The back frame 3 is provided with two guide rods 23, and the mounting bracket 24 is slidably mounted on the guide rods 23. The mounting bracket 24 has multiple placement slots 2401. The position of the mounting bracket 24 can be adjusted by sliding along the guide rods 23. The placement slots 2401 on it are convenient for placing commonly used dental instruments (such as three-way guns), improving the efficiency and portability of diagnosis and treatment. When not in use, the mounting bracket 24 can be slid into the side of the back frame 3.

[0046] like Figure 11 As shown, the device also includes a movable support 25, fasteners 26, and a light fixture 27. The movable support 25 is movably mounted on the back frame 3, and the light fixture 27 is mounted on the movable support 25. Fasteners 26 are provided at each joint of the movable support 25. The movable support 25 allows for flexible adjustment of the position and angle of the light fixture 27. The operator can adjust the light fixture 27 to the optimal lighting position according to the actual treatment situation. The fasteners 26 are used to lock the joints of the support after adjustment, ensuring that the light fixture 27 remains stable after adjustment and providing sufficient lighting for dental operations.

[0047] like Figure 9 , Figure 12 and Figure 13As shown, the device also includes a music player 28, a battery 29, a rotating frame 30, and a solar panel 31. Two music players 28 are mounted on the back pad 301. The battery 29 is located on the side of the back pad 301 closest to the back frame 3. The rotating frame 30 is rotatably mounted on the side of the back pad 30 closest to the back frame 3, and the solar panel 31 is slidably mounted on the rotating frame 30. The lamp 27, solar panel 31, and music players 28 are all electrically connected to the battery 29. The music player 28 is positioned on the back pad 301 corresponding to the patient's ear to alleviate anxiety during dental surgery. The solar panel 31 and battery 29 form a power supply module that powers the lamp 27, solar panel 31, and music player 28. The solar panel 31 can be unfolded via the rotating frame 30.

[0048] like Figure 12 , Figure 14 and Figure 15 As shown, it also includes a support plate 32, a fixing sleeve 33, a mounting nail 34, a third elastic element 35, and a fixing element 36. The bottom of the movable frame 5 is rotatably equipped with the support plate 32, which is slidably connected to the support frame 4. The support plate 32 is provided with multiple fixing sleeves 33, and the mounting nails 34 are slidably provided inside the fixing sleeves 33. A third elastic element 35 connects the fixing sleeves 34 and the mounting nails 34. The fixing sleeves 34 have fixing grooves 37 on their sides, and the mounting nails 34 have fixing elements 36 on their sides. The fixing elements 36 are slidably connected to the fixing grooves 37. When deploying the equipment on uneven terrain in the field, the mounting nails 34 can be pressed down into the soft soil and fixed by the fixing elements 36 and the fixing grooves 37.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A portable dental chair, comprising a base (1), characterized in that, It also includes a tripod (2), a back frame (3), a back pad (301), a support frame (4), a movable frame (5), a first connecting rod (6), a second connecting rod (7), a rotating shaft (8), a first belt (9), a guide (11), a transmission mechanism, and a rocker arm (10). The base (1) is rotatably equipped with the first connecting rod (6) at one end. The tripod (2) is fixedly equipped with the second connecting rod (7). The back frame (3) is equipped with a rotating shaft (8) and a back pad (301). The tripod (2) is rotatably connected to the base (1) via the second connecting rod (7). The back frame (3) is rotatably connected to the base (1) via the rotating shaft (8). 8) Rotatably connected to the base (1), the base (1) is provided with a support frame (4) rotatably, the base (1) is provided with a sliding frame (5), the middle part of the support frame (4) is rotatably connected to the middle part of the sliding frame (5), the base (1) is provided with multiple guides (11), the base (1) is provided with a first belt (9), the first belt (9) passes around the first connecting rod (6), the second connecting rod (7), the guides (11) and the rotating shaft (8) in sequence, the second connecting rod (7) and the support frame (4) are provided with a transmission mechanism, and one end of the first connecting rod (6) is provided with a rocker arm (10).

2. A portable dental chair as described in claim 1, characterized in that, The transmission mechanism includes a transmission rod (12) and a second belt (13). The transmission rod (12) is rotatably mounted on the base (1). Both ends of the transmission rod (12) are connected to the support frame (4). The second connecting rod (7) and the transmission rod (12) are wrapped with the second belt (13).

3. A portable dental chair as described in claim 2, characterized in that, It also includes a sliding rod (14), a limiting block (15), a first elastic element (16), and a fixing mechanism. One end of the transmission rod (12) has a sliding groove (1201). The sliding rod (14) is slidably provided in the sliding groove (1201). The sliding rod (14) is slidably connected to the support frame (4). The sliding rod (14) has a limiting groove (1401). The two ends of the limiting groove (1401) are inclined. The limiting block (15) is slidably provided in both the transmission rod (12) and the support frame (4). The first elastic element (16) is connected to the limiting block (15). The first elastic element (16) is connected to the transmission rod (12) or the support frame (4). The limiting block (15) is embedded in the limiting groove (1401). One end of the limiting block (15) near the sliding rod (14) is inclined. The base (1) is provided with a fixing mechanism for fixing the support frame (4).

4. A portable dental chair as described in claim 3, characterized in that, The fixing mechanism includes a fixing frame (17) and a fixing bolt (18). The base (1) is provided with a fixing frame (17), and the fixing frame (17) is threaded with a fixing bolt (18). The support frame (4) has multiple fixing holes (401), and the fixing bolt (18) can be embedded into the fixing holes (401).

5. A portable dental chair as described in claim 4, characterized in that, The transmission rod (12) is provided with a connecting hole (1202), which is connected to the sliding groove (1201).

6. A portable dental chair as described in claim 5, characterized in that, It also includes handrails (19), movable rods (20), second elastic elements (21) and pins (22). Two handrails (19) are rotatably provided on the back frame (3). Movable rods (20) are slidably provided on the handrails (19). The second elastic element (21) is connected between the handrails (19) and the movable rods (20). One end of the movable rods (20) is slidably provided with pins (22). Multiple insertion holes (302) are opened on the back frame (3). The pins (22) can be inserted into the insertion holes (302).

7. A portable dental chair as described in claim 6, characterized in that, It also includes guide rods (23) and placement racks (24). The back frame (3) is provided with two guide rods (23), and the placement racks (24) are slidably provided on the guide rods (23). The placement racks (24) have multiple placement slots (2401).

8. A portable dental chair as described in claim 7, characterized in that, It also includes a movable bracket (25), fasteners (26) and a lamp (27). The movable bracket (25) is movably mounted on the back frame (3), and the lamp (27) is mounted on the movable bracket (25). Fasteners (26) are provided at each joint of the movable bracket (25).

9. A portable dental chair as described in claim 8, characterized in that, It also includes a music player (28), a battery (29), a rotating frame (30) and a solar panel (31). Two music players (28) are provided on the back pad (301). The battery (29) is provided on the side of the back pad (301) near the back frame (3). The rotating frame (30) is rotatably provided on the side of the back pad (301) near the back frame (3). The solar panel (31) is slidably provided on the rotating frame (30). The lamp (27), the solar panel (31) and the music player (28) are all electrically connected to the battery (29).

10. A portable dental chair as described in claim 9, characterized in that, It also includes a support plate (32), a fixing sleeve (33), a mounting pin (34), a third elastic element (35), and a fixing element (36). The bottom of the movable frame (5) is provided with a rotating support plate (32). The support plate (32) is slidably connected to the support frame (4). The support plate (32) is provided with multiple fixing sleeves (33). The fixing sleeves (33) are slidably provided with mounting pins (34). The fixing sleeves (34) and the mounting pins (34) are connected by a third elastic element (35). The fixing sleeves (34) have a fixing groove (37) on their side. The mounting pins (34) have a fixing element (36) on their side. The fixing element (36) is slidably connected to the fixing groove (37).

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