Turnover and rotatable multifunctional double-layer armrest

Abstract

The utility model relates to the field of armrests for professional seats in medical environments, in particular to a turnover and rotatable multifunctional double-layer armrest which comprises a housing. A lower-layer supporting plate, an upper-layer rotating supporting plate, a handrail supporting assembly, a cast handrail joint, an inner screw rod and a hollow rod are further included, and the lower-layer supporting plate is arranged at the top of the housing; the upper-layer rotary supporting plate is pushed to enable the inner screw rod to rotate in the hollow rod, and when the upper-layer rotary supporting plate rotates, the friction force between the upper-layer rotary supporting plate and the lower-layer supporting plate is controlled through the damper composed of the disc spring and the metal gasket, so that the upper-layer rotary supporting plate can horizontally rotate by-90 degrees to 90 degrees, and the friction force between the upper-layer rotary supporting plate and the lower-layer supporting plate is controlled by the damper. The duck tongue buckle is pulled upwards to drive a pull wire connected with a hydraulic gas spring switch, the pull wire can trigger the gas spring switch to control a gas spring, and the whole double-layer handrail is adjusted to turn over by 23-16 degrees up and down by controlling the gas spring. Therefore, the angle of the armrest can be adjusted to the optimal state according to the sitting posture and the use habit of a person.

Description

Technical Field

[0001] This utility model relates to the field of armrests for professional chairs in medical environments, and more particularly to a multi-functional double-layer armrest that can be flipped and rotated. Background Technology

[0002] Chairs are an essential and practical tool in the medical field, helping patients find the most suitable posture during treatment. A chair includes armrests, backrest, and seat cushion. People need to use the armrests, and the angle of the armrests needs to be adjusted to different degrees depending on the patient's posture, habits, or specific functions of the chair in the medical field, in order to meet the different needs of different people.

[0003] Common multi-functional double-layer handrails are usually fixed after installation, only providing support for the elbows of the user. They lack the ability to flip and rotate, which means that the angle of the handrail cannot be adjusted according to the user's sitting posture and habits, thus affecting the user's comfort when using the handrail.

[0004] Therefore, to address the lack of flip-up and rotation functionality in the aforementioned multi-functional double-layer handrails, a flip-up and rotatable multi-functional double-layer handrail can be designed. By pushing the upper rotating handrail, the inner screw rotates within the hollow rod. During rotation, a damper composed of a disc spring and metal washers controls the friction between the upper and lower handrails, allowing the upper handrail to rotate horizontally from -90° to 90°. Pulling the duckbill upwards activates the cable connecting to the hydraulic gas spring switch, triggering the switch and controlling the gas spring. This allows the entire double-layer handrail to flip vertically from -23° to 16°, ensuring the handrail angle can be adjusted to the optimal position based on the user's posture and usage habits. Utility Model Content

[0005] To overcome the common problem that multi-functional double-layer handrails are generally fixed after installation and only provide support for the elbows, lacking the ability to flip and rotate, the angle of the handrail cannot be adjusted according to the user's sitting posture and usage habits, thus affecting the user's comfort when using the handrail.

[0006] The technical solution of this utility model is as follows: a flip-up and rotatable multifunctional double-layer handrail, including a cover; it also includes a lower handrail, an upper rotating handrail, a handrail support assembly, a cast handrail joint, an inner screw, and a hollow rod. The lower handrail is provided on the top of the cover, the upper rotating handrail is provided on the front side of the top of the lower handrail, the handrail support assembly is provided on the bottom of the lower handrail, the cast handrail joint is provided on the rear side of the bottom of the handrail support assembly, the inner screw is provided on the rear side of the bottom middle of the upper rotating handrail, and the hollow rod is provided on the middle of the top of the handrail support assembly corresponding to the position of the inner screw.

[0007] Preferably, by pushing the upper rotating handrail, the inner screw rotates inside the hollow rod. When the upper rotating handrail rotates, the friction between the upper and lower handrails is controlled by a damper composed of a disc spring and a metal washer, allowing the upper rotating handrail to rotate horizontally from -90° to 90°. By pulling the duckbill buckle upwards, the cable connected to the hydraulic gas spring switch is activated, which controls the gas spring. By controlling the gas spring, the entire double-layer handrail can be tilted up and down from -23° to 16°. This ensures that the angle of the handrail can be adjusted to the optimal state according to the user's sitting posture and usage habits. This solves the problem that common multi-functional double-layer handrails are fixed after installation and only provide elbow support, lacking the function of tilting and rotating, thus failing to meet the usage needs of different people in different scenarios.

[0008] Preferably, a connecting hole is provided through the center of the top of the lower handrail, the top of the hollow rod is inserted into the connecting hole, and an upper handrail seat is provided on the rear side of the top of the lower handrail.

[0009] Preferably, the upper part of the inner screw is fitted with a disc spring and a metal washer, the bottom end of the inner screw is fitted with a rotating shaft through the hollow rod, and a fixing bolt is provided at the bottom end of the inner screw, with the top of the fixing bolt screwed into the interior of the inner screw.

[0010] Preferably, a shaped groove is provided at the rear end of the left side of the cover, corresponding to the position of the cast armrest joint.

[0011] Preferably, four screws are evenly spaced at the bottom of the cover, and the cover is fixed to the lower support plate by the screws.

[0012] Preferably, a rotating shaft is provided at the rear of the top of the inside of the handrail support assembly, and the upper part of the cast handrail joint is rotatably connected to the rotating shaft. A hydraulic gas spring is rotatably connected to the middle of the right side of the cast handrail joint. A spring switch is provided at the front end of the hydraulic gas spring, and a pull wire is connected to the front of the spring switch. An object hook is provided at the front end of the bottom right side of the lower handrail.

[0013] Preferably, the front end of the pull cord is connected to a duckbill buckle, and a rectangular groove is opened on the front side of the cover, with the front end of the duckbill buckle passing through the rectangular groove and placed outside the cover.

[0014] The beneficial effects of this utility model are:

[0015] 1. By pushing the upper rotating handrail, the inner screw rotates inside the hollow rod. When the upper rotating handrail rotates, the friction between the upper and lower handrails is controlled by a damper composed of disc springs and metal washers, allowing the upper rotating handrail to rotate horizontally from -90° to 90°. By pulling the duckbill buckle upwards, the cable connected to the hydraulic gas spring switch is activated, which controls the gas spring. By controlling the gas spring, the entire double-layer handrail can be tilted up and down from -23° to 16°. This ensures that the angle of the handrail can be adjusted to the optimal state according to the user's sitting posture and usage habits. This solves the problem that common multi-functional double-layer handrails are fixed after installation and only provide elbow support, lacking the function of tilting and rotating, thus failing to meet the needs of different users in different scenarios. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural diagram of the flip-out and rotatable multifunctional double-layer handrail of this utility model.

[0017] Figure 2 The diagram shown is an exploded view of the upper rotating armrest plate of the multifunctional double-layer armrest of this utility model, which is reversible and rotatable.

[0018] Figure 3 The diagram shown is an exploded view of the lower handrail of the flip-up and rotatable multifunctional double-layer handrail of this utility model.

[0019] Figure 4 The diagram shown is an exploded view of the flip-up and rotatable multifunctional double-layer handrail cover of this utility model.

[0020] Figure 5 The diagram shown is an exploded view of the overall structure of the flip-up and rotatable multifunctional double-layer handrail of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Cover; 2. Lower handrail; 3. Upper rotating handrail; 4. Handrail support assembly; 5. Cast handrail joint; 6. Connecting hole; 7. Internal threaded rod; 8. Hollow rod; 9. Disc spring; 10. Metal washer; 11. Upper handrail back seat; 12. Rotating shaft; 13. Fixing bolt; 14. Irregular groove; 15. Screw; 16. Pull cable; 17. Duckbill buckle; 18. Object hook; 19. Rectangular groove; 20. Hydraulic gas spring; 21. Spring switch; 22. Rotating shaft component. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5 This utility model provides an embodiment of a flip-up and rotatable multifunctional double-layer handrail, including a cover 1; it also includes a lower handrail 2, an upper rotating handrail 3, a handrail support assembly 4, a cast handrail joint 5, an inner screw 7, and a hollow rod 8. The lower handrail 2 is located on the top of the cover 1, the upper rotating handrail 3 is located on the front side of the top of the lower handrail 2, the handrail support assembly 4 is located at the bottom of the lower handrail 2, the cast handrail joint 5 is located on the rear side of the bottom of the handrail support assembly 4, the inner screw 7 is located on the rear side of the middle of the bottom of the upper rotating handrail 3, and the hollow rod 8 is located on the middle of the top of the handrail support assembly 4 corresponding to the position of the inner screw 7. By pushing the upper rotating handrail 3, the inner screw 7 rotates inside the hollow rod 8. When the upper rotating handrail 3 rotates, it is supported by a disc spring 9 and a metal washer 10. A damper controls the friction between the upper rotating handrail 3 and the lower handrail 2, allowing the upper rotating handrail 3 to rotate horizontally from -90° to 90°. By pulling the ducktail buckle 17 upwards, the pull cable 16 connected to the spring switch 21 is activated. The pull cable 16 then triggers the spring switch 21 to control the hydraulic air spring 20. By controlling the hydraulic air spring 20, the entire double-layer handrail can be adjusted up and down from -23° to 16°. This ensures that the angle of the handrail can be adjusted to the optimal state according to the user's posture and usage habits. This addresses the common problem of multi-functional double-layer handrails being fixed after installation and only providing elbow support, but lacking the ability to rotate and flip, resulting in the handrail angle not being adjustable according to the user's posture and usage habits, thus affecting the user's comfort when using the handrail.

[0024] Please see Figures 2-5In this embodiment, a groove 14 is provided on the rear left side of the cover 1 corresponding to the position of the cast handrail joint 5. Four screws 15 are evenly spaced on the bottom of the cover 1. The cover 1 is fixed to the lower handrail plate 2 by the screws 15. A rotating shaft 22 is provided on the rear side of the top of the handrail support assembly 4. The upper part of the cast handrail joint 5 is rotatably connected to the rotating shaft 22. A hydraulic gas spring 20 is rotatably connected to the middle of the right side of the cast handrail joint 5. A spring switch 21 is provided at the front end of the hydraulic gas spring 20. A pull wire 16 is connected to the front side of the spring switch 21. An object hanger is provided at the front end of the bottom right side of the lower handrail plate 2. Hook 18 and pull line 16 are connected to a ducktail buckle 17 at the front end. A rectangular groove 19 is provided on the front side of the cover 1. The front end of the ducktail buckle 17 passes through the rectangular groove 19 and is placed outside the cover 1. The hollow tube of the seat passes through the irregular groove 14 and is inserted into the interior of the cast armrest joint 5, thereby connecting the armrest and the seat. The cast armrest joint 5 and the hollow tube are connected by a keyway, which can be freely disassembled without the need for tools, saving transportation space. When the armrest needs to be flipped, the pull line 16 connected to it is triggered by the ducktail buckle 17, thereby triggering the spring switch 21, and the up and down flipping function of the armrest is realized by adjusting the hydraulic air spring 20.

[0025] Please see Figures 1-5 In this embodiment, a connecting hole 6 is provided through the center of the top of the lower armrest 2. The top end of the hollow rod 8 is inserted into the connecting hole 6. An upper armrest seat 11 is provided on the rear side of the top of the lower armrest 2. A disc spring 9 and a metal washer 10 are fitted around the upper part of the inner screw 7. A rotating shaft 12 is fitted through the hollow rod 8 at the bottom end of the inner screw 7. A fixing bolt 13 is provided at the bottom end of the inner screw 7. The top end of the fixing bolt 13 is screwed into the interior of the inner screw 7. When it is necessary to adjust the angle of the upper rotating armrest 3, the inner screw 7 is rotated inside the hollow rod 8 by pushing the upper rotating armrest 3. When the upper rotating armrest 3 rotates, the friction between the upper rotating armrest 3 and the lower armrest 2 is controlled by the damper composed of the disc spring 9 and the metal washer 10, which realizes the function of the armrest being rotatable. This allows the angle of the armrest to be adjusted according to the sitting posture and usage habits of the user, improving the comfort of the user when using the armrest.

[0026] During operation, the hollow tube of the seat is inserted through the shaped groove 14 and then into the interior of the cast armrest joint 5, thereby connecting the armrest to the seat. The cast armrest joint 5 and the hollow tube are connected by a keyway, which can be freely disassembled without the need for tools, saving transportation space. By flipping the duckbill buckle 17, the pull cable 16 connected to it triggers the spring switch 21, thereby adjusting the hydraulic air spring 20 to realize the up-and-down flipping function of the armrest. When it is necessary to adjust the angle of the upper rotating armrest 3, the upper rotating armrest 3 is pushed to make the inner screw 7 rotate inside the hollow rod 8. When the upper rotating armrest 3 rotates, the damper composed of disc spring 9 and metal washer 10 controls the friction between the upper rotating armrest 3 and the lower armrest 2, thereby ensuring that the angle of the armrest can be adjusted according to the sitting posture or habits of the person, realizing the flipping and rotating functions.

[0027] Through the above steps, by pushing the upper rotating armrest 3, the inner screw 7 rotates inside the hollow rod 8. When the upper rotating armrest 3 rotates, the damper composed of disc spring 9 and metal washer 10 controls the friction between the upper rotating armrest 3 and the lower armrest 2, allowing the upper rotating armrest 3 to rotate horizontally from -90° to 90°. By pulling the duckbill buckle 17 upward, the pull cable 16 connected to the spring switch 21 is activated, which in turn triggers the spring switch 21 to control the hydraulic air spring 20. By controlling the hydraulic air spring 20, the entire double-layer armrest can be adjusted to rotate up and down from -23° to 16°. This ensures that the armrest angle can be adjusted to the optimal state according to the user's sitting posture and usage habits, thus solving the problem that common multi-functional double-layer armrests are fixed after installation and only provide elbow support, but lack the function of rotation and flipping, resulting in the armrest angle not being adjustable according to the user's sitting posture and usage habits, thus affecting the user's comfort when using the armrest.

Claims

1. A flip-up and rotatable multi-functional double-layer handrail, including a cover (1); characterized in that: It also includes a lower handrail (2), an upper rotating handrail (3), a handrail support assembly (4), a cast handrail joint (5), an inner screw (7) and a hollow rod (8). The top of the cover (1) is provided with a lower handrail (2), the front side of the top of the lower handrail (2) is provided with an upper rotating handrail (3), the bottom of the lower handrail (2) is provided with a handrail support assembly (4), the rear side of the bottom of the handrail support assembly (4) is provided with a cast handrail joint (5), the rear side of the middle of the bottom of the upper rotating handrail (3) is provided with an inner screw (7), and the middle of the top of the handrail support assembly (4) is provided with a hollow rod (8) corresponding to the position of the inner screw (7).

2. The flip-up and rotatable multi-functional double-layer handrail according to claim 1, characterized in that: A connecting hole (6) is provided through the center of the top of the lower handrail (2), and the top of the hollow rod (8) is inserted into the interior of the connecting hole (6). An upper handrail seat (11) is provided on the rear side of the top of the lower handrail (2).

3. The flip-up and rotatable multi-functional double-layer handrail according to claim 1, characterized in that: The upper part of the inner screw (7) is fitted with a disc spring (9) and a metal washer (10). The bottom end of the inner screw (7) is fitted with a rotating shaft (12) through the hollow rod (8). The bottom end of the inner screw (7) is provided with a fixing bolt (13). The top of the fixing bolt (13) is screwed into the interior of the inner screw (7).

4. The flip-up and rotatable multi-functional double-layer handrail according to claim 1, characterized in that: A groove (14) is provided on the left rear end of the cover (1) corresponding to the position of the cast armrest joint (5).

5. The flip-up and rotatable multi-functional double-layer handrail according to claim 1, characterized in that: The bottom of the cover (1) is provided with four screws (15) at equal intervals, and the cover (1) is fixed to the lower support plate (2) by the screws (15).

6. The flip-up and rotatable multi-functional double-layer handrail according to claim 1, characterized in that: A rotating shaft (22) is provided on the rear side of the top of the handrail support assembly (4). The upper part of the cast handrail joint (5) is rotatably connected to the rotating shaft (22). A hydraulic gas spring (20) is rotatably connected to the middle of the right side of the cast handrail joint (5). A spring switch (21) is provided at the front end of the hydraulic gas spring (20). A pull wire (16) is connected to the front side of the spring switch (21). An object hook (18) is provided at the front end of the bottom right side of the lower handrail (2).

7. The flip-up and rotatable multi-functional double-layer handrail according to claim 6, characterized in that: The front end of the pull cord (16) is connected to a duckbill buckle (17), and a rectangular groove (19) is provided on the front side of the cover (1). The front end of the duckbill buckle (17) passes through the rectangular groove (19) and is placed outside the cover (1).

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