Lifting armrest and seat with same

Abstract

The utility model discloses a lifting handrail and a seat with the lifting handrail, and relates to the technical field of chair accessories, the lifting handrail comprises supporting handrails arranged on the two sides of the seat, each supporting handrail comprises a handrail frame used for supporting the hand and a fixed guide rail, and a movable sliding sleeve is arranged on the inner side of each fixed guide rail in a sliding mode; the movable sliding sleeves are arranged on the inner sides of the fixed guide rails, the two movable sliding sleeves are fixedly connected through the mounting plate, supporting blocks are fixedly arranged at the bottoms of the fixed guide rails, connecting frames used for supporting the armrest frame are arranged on one sides of the movable sliding sleeves, and lead screw lifters used for controlling the armrest frame to ascend and descend are arranged on the inner sides of the movable sliding sleeves. The mounting grooves are formed in the surfaces of the mounting plates, so that a double-shaft motor can be conveniently mounted, the utilization of the internal space of the armrest is further enhanced, the situation that the armrest is too wide or too long and consequently is bloated can be avoided, and when the supporting armrest is lowered to the minimum, the outer surface of the supporting armrest can be flush with the surface of a seat cushion; therefore, the area of the seat is increased, and more people can be accommodated.

Description

Technical Field

[0001] The present application relates to the technical field of chair accessories, and in particular to a lifting armrest and a chair with the lifting armrest. Background Art

[0002] A chair with adjustable armrests is a very practical chair design. Its key feature is the flexible armrests. People can adjust the armrests to suit their needs, such as raising them for comfortable arm rest and good posture when working, or lowering them for a more relaxed posture when resting.

[0003] For example, Chinese patent publication number CN214083981U discloses a chair structure with adjustable armrests. This structure has the following drawbacks:

[0004] The lifting function of the armrest is achieved through vertical guide rails, sliding guide sleeves and armrest iron frames. However, the armrest iron frames, sliding guide sleeves and guide sleeve fixing frames are provided in the device, which has low utilization rate of the structural materials of the armrest and the internal space of the armrest, making the armrest of the seat appear bloated. Utility Model Content

[0005] In order to improve the problem of bloated armrest structure, the present application provides a lifting armrest and a seat with the lifting armrest.

[0006] The present application provides a lifting armrest and a chair with the lifting armrest, which adopt the following technical solutions:

[0007] A lifting armrest, comprising support armrests arranged on both sides of a seat, the support armrests comprising an armrest frame for providing support for the hands and a fixed guide rail, a movable sleeve being slidably arranged on the inner side of the fixed guide rail, a support block being fixedly arranged on the bottom of the fixed guide rail, a connecting frame for supporting the armrest frame being arranged on one side of the movable sleeve, a screw elevator for controlling the lifting of the armrest frame being arranged on the inner side of the movable sleeve, the screw elevator comprising a screw fixedly connected to the top surface of the support block, and a mounting plate for clamping with a dual-axis motor being fixedly arranged in the middle of the movable sleeve;

[0008] The edges of the upper and lower ends of the mounting plate are provided with flanges, and a mounting groove for placing the dual-axis motor is provided in the middle of the mounting plate. Two clamping blocks are provided on the two end surfaces of the mounting plate located at the mounting groove. Two curved surfaces are provided outward at both ends of the mounting plate, and two through grooves for the movement of the rotating shaft of the dual-axis motor are provided in the middle of the two curved surfaces. Two clamping blocks 2 for clamping with the rotating sleeve are respectively provided on the side surfaces adjacent to the two through grooves, and two convex surfaces for abutting against the screw lifter are respectively provided at both ends of the mounting plate.

[0009] By adopting the above technical solution, a movable sleeve is set on the inner side of the fixed guide rail, and the two movable sleeves are fixedly connected by a mounting plate, so that the maximum length of the supporting armrest is the length of the armrest frame, and a mounting groove is set on the surface of the mounting plate to facilitate the installation of a dual-axis motor, thereby further enhancing the utilization of the internal space of the armrest, and can prevent the armrest from appearing bloated due to being too wide or too long. When the supporting armrest is lowered to the lowest, the outer surface of the supporting armrest can be flush with the surface of the seat cushion, thereby increasing the area of ​​the seat to accommodate more people.

[0010] Preferably, a support frame is clamped on the surface of the screw lift, a circular groove for the screw to move is provided in the middle of the support frame, and two mounting holes are provided on the surface of the support frame.

[0011] By adopting the above technical solution, the support frame can make the direct connection between the body of the screw lift and the mounting plate more stable.

[0012] Preferably, four mounting holes are opened on the surface of the mounting plate, and a side of the mounting plate close to the movable sleeve abuts against a side of the movable sleeve close to the mounting plate.

[0013] By adopting the above technical solution, the abutment between the mounting plate and the movable sliding sleeve can enhance the stability of the connection between the mounting plate and the movable sliding sleeve.

[0014] Preferably, a square groove for placing a screw lift is provided in the middle of the movable sleeve on the side close to the mounting plate.

[0015] By adopting the above technology, the slide groove can movably penetrate the body of the screw lift and provide a limiting effect on the body of the screw lift.

[0016] Preferably, the rotating shaft of the dual-axis motor movably passes through the rotating sleeve.

[0017] By adopting the above technical solution, the rotating shaft of the dual-axis motor can be rotated inside the rotating sleeve.

[0018] Preferably, two U-shaped plates of different sizes are fixedly provided at both ends of the bottom of the handrail frame, and the bottom surfaces of the two U-shaped plates abut against the top of the connecting frame.

[0019] By adopting the above technical solution, the two U-shaped plates of different sizes enable the armrest to have a certain height difference between the front and the back, so that the armrest can fit the human arm better when in use, making it more comfortable.

[0020] Preferably, support surfaces are provided on both sides of the connecting frame, a connecting hole is opened on the surface of the connecting frame, and a side of the connecting frame close to the movable sleeve abuts against a side of the movable sleeve close to the connecting frame.

[0021] By adopting the above technical solution, supporting surfaces are provided on both sides of the connecting frame, making the structure of the supporting frame more stable and stronger.

[0022] A chair with the lifting armrest is applied to the above-mentioned lifting armrest and comprises supporting armrests arranged on both sides of the seat body for realizing lifting.

[0023] By adopting the above technical solution, the support armrests on both sides of the seat can be adjusted in height when the seat is in use, making the support armrests and the seat more comfortable to use.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] By setting a movable sleeve on the inner side of the fixed guide rail and fixing the two movable sleeves together through a mounting plate, the maximum length of the supporting armrest is equal to the length of the armrest frame. The mounting groove on the mounting plate is convenient for installing a dual-axis motor, further enhancing the utilization of the internal space of the armrest and preventing the armrest from being too wide or too long, thereby preventing the armrest from appearing bloated. By controlling the dual-axis motor to adjust the height of the supporting armrest, people are more comfortable to use.

[0026] Furthermore, when the support armrest is lowered to the lowest position, the outer surface of the support armrest can be flush with the surface of the seat cushion, thereby increasing the area of ​​the seat to accommodate more people. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the support handrail of this application when viewed from above;

[0028] Figure 2 This is a schematic diagram of the left side view of the support armrest of this application;

[0029] Figure 3 This is a schematic diagram of the fixed guide rail structure of this application;

[0030] Figure 4 This is a schematic diagram of the movable sleeve structure of this application;

[0031] Figure 5 This is a schematic diagram of the mounting plate structure of this application;

[0032] Figure 6 Schematic diagram of the support frame structure and the connecting frame structure of this application;

[0033] Figure 7 This is a schematic diagram of the seat body structure of this application.

[0034] Reference numerals: 1, seat body;

[0035] 2. Support handrail; 21. Fixed guide rail; 211. Support block; 22. Moving sleeve; 221. Square groove; 23. Handrail frame; 231. U-shaped plate;

[0036] 3. Screw;

[0037] 4. Screw lift;

[0038] 5. Mounting plate; 51. Mounting slot; 52. Clamping block 1; 53. Clamping block 2; 54. Rotating sleeve; 55. Through slot; 56. Flanged edge; 57. Curved surface; 58. Mounting hole 1; 59. Convex surface;

[0039] 6. Support frame; 61. Circular groove; 62. Mounting hole 2;

[0040] 7. Dual-axis motor;

[0041] 8. Connecting frame; 81. Connecting hole; 82. Support surface. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-Figure 7 This application is described in further detail.

[0043] Example 1

[0044] The embodiment of the present application discloses a lifting armrest.

[0045] Reference Figure 1 、 Figure 2, a lifting armrest and a seat with the lifting armrest, comprising support armrests 2 arranged on both sides of the seat, the outer side of the support armrests 2 is provided with sponge and wrapped with leather, making it softer and more comfortable to use, the fixed guide rail 21 is fixedly connected to the side of the seat, the outer surface of the movable slide 22 is slidably connected to the inner side of the fixed guide rail 21, the height of the fixed guide rail 21 is lower than the height of the seat cushion, when the movable slide 22 moves to the lowest end inside the fixed guide rail 21, the outer surface of the support armrest 2 is flush with the surface of the seat cushion, the fixed guide rail 21 can provide a limiting effect on the movable slide 22, the two sides of the connecting frame 8 are bent outward and extended to form a supporting surface 82, which can make the structure of the connecting frame 8 more stable, and two vertical connection holes 81 are provided in the middle of the side of the connecting frame 8 and the upper end surface of the movable slide 22, and the movable slide 22 is close to one side of the connecting frame 8 The U-shaped plate 231 and the connecting frame 8 are fixedly connected by bolts through the connecting holes 81, so that the armrest frame 23 is connected to the movable sleeve 22 at one end thereof. The larger U-shaped plate 231 is fixedly connected to the bottom of the armrest frame 23 away from the seat back, so that the end of the armrest frame 23 away from the seat back is higher than the other end, so that it fits the human arm better when used. Two transverse connecting holes 81 are provided on the upper surface of the connecting frame 8 and the bottom surface of the U-shaped plate 231. The side of the U-shaped plate 231 close to the connecting frame 8 abuts against the side of the connecting frame 8 close to the U-shaped plate 231. The U-shaped plate 231 and the connecting frame 8 are fixedly connected by bolts passing through the connecting holes 81, so that the armrest frame 23 and the movable sleeve 22 are connected together, so that the subsequent lifting and lowering can be controlled by the screw lifter 4.

[0046] During installation, first fix the fixed guide rail 21 to the side of the seat, fix the two U-shaped plates 231 at the bottom of the armrest frame 23 to the two connecting frames 8 respectively with bolts, and then fix the two connecting frames 8 to the sides of the two movable sleeves 22 respectively with bolts. At this time, the armrest frame 23, the connecting frame 8 and the two movable sleeves 22 form a whole.

[0047] Reference Figure 1 、 Figure 2 and Figure 5, a mounting plate 5 is provided in the middle of the two movable sleeves 22, and a mounting groove 51 is provided in the middle of the surface of the mounting plate 5. The surface of the dual-axis motor 7 moves through the mounting groove 51. The mounting plate 5 is located at both ends of the mounting groove 51 and is bent and extended outward to form two clamping blocks 52. The two clamping blocks 52 are clamped and fixed with the two ends of the dual-axis motor 7. Two curved surfaces 57 are provided at both ends of the mounting plate 5. Two through grooves 55 are provided in the middle of the two curved surfaces 57. The size of the two through grooves 55 is larger than the size of the rotating shaft of the dual-axis motor 7. The two through grooves 55 are bent and extended on one side to form two The second clamping block 53 and the movable sleeve of the rotating shaft surface of the dual-axis motor 7 are provided with a rotating sleeve 54, which passes through two through grooves 55. The surface of the rotating sleeve 54 is fixedly clamped with the inner side of the second clamping block 53. Two convex surfaces 59 are respectively provided at both ends of the mounting plate 5. Two square grooves 221 are provided in the middle of the surface of the movable sleeve 22. The body of the screw lift 4 passes through the square grooves 221 and abuts against the convex surface 59, which can make the connection between the mounting plate 5 and the screw lift 4 more stable. The upper and lower ends of the mounting plate 5 are symmetrically provided with flanges 56, which can enhance the overall structural strength of the mounting plate 5.

[0048] During installation, the body of the screw lift 4 is placed in the square groove 221 of the movable sleeve 22, so that the inner side of the convex surface 59 of the mounting plate 5 and the inner side of the support frame 6 can clamp the body surface of the screw lift 4 and fix it by bolts, and the bottom end of the screw 3 of the screw lift 4 is welded and fixed to the support block 211 at the bottom of the fixed guide rail 21, and the two ends of the dual-axis motor 7 are respectively clamped and fixed to the inner sides of the two clamping blocks 52, and the two rotating sleeves 54 are respectively put on the rotating shafts at both ends of the dual-axis motor 7, and are respectively clamped and fixed to the inner sides of the two clamping blocks 53. At this time, the rotating shafts of the dual-axis motor 7 are respectively fixedly connected to the input shafts of the two screw lifts 4, so that the dual-axis motor 7 can control the body of the screw lift 4 to move on the screw 3.

[0049] It should be noted that after the mounting plate 5 is fixed to the movable sleeve 22 , the position of the dual-axis motor 7 is located between the two movable sleeves 22 , which can improve the utilization of space while maintaining structural stability, so that the support armrest 2 does not appear bloated.

[0050] The screw lift 4 includes an input shaft fixed to the output shaft of the dual-shaft motor 7 , a body fixed to the inner side of the support frame 6 , and other structures.

[0051] Among them, the screw lift 4 adopts the lifting structure in the announcement number CN214083981U, the dual-axis motor 7 and the wire connection with the dual-axis motor 7 are all existing technologies, and its structural principle will not be described in detail here. The dual-axis motor 7 can adopt an intelligent dual-axis brushless motor, which can reduce mechanical wear, extend the life of the motor, and further reduce maintenance costs and energy consumption. The control circuit of the dual-axis motor 7 can use the existing one. If special actions are required, additional setting programs are required to control it.

[0052] Reference Figure 3-Figure 6 The screw lift 4 includes a screw rod 3 for supporting, the bottom of the fixed guide rail 21 is fixedly connected to the top surface of the support block 211, the middle part of the upper surface of the support block 211 is fixedly connected to the bottom end of the screw rod 3, the surface of the screw rod 3 is movably connected to the body of the screw lift 4, so that the body of the screw lift 4 can move up and down on the surface of the screw rod 3, the body surface of the screw lift 4 is in contact with the inner side of the support frame 6, and the surface of the support frame 6 is provided with a circular groove 61, which is sleeved with the surface of the screw rod 3, and the upper and lower ends of the support frame 6 and Two mounting holes 2 62 are respectively provided on the inner side of the movable sleeve 22, and a mounting hole 1 58 of the same size as the mounting hole 2 62 is provided on the surface of the mounting plate 5. Bolts are passed through the mounting hole 1 58 and the mounting hole 2 62 to fix the mounting plate 5, the movable sleeve 22 and the support frame 6 together, which can provide good support and limitation for the body of the screw lift 4, and make the two movable sleeves 22, the mounting plate 5 and the screw lift 4 form a whole, which can improve the lifting effect of the support handrail 2.

[0053] When in use, turn on the dual-axis motor 7, and the rotating shaft of the dual-axis motor 7 will drive the input shafts of the two screw lifts 4. The input shafts of the screw lifts 4 drive the gear transmission inside the screw lifts 4, further enabling the body of the screw lifts 4 to move on the surface of the screw 3. When the body of the screw lifts 4 moves, it simultaneously drives the two movable sleeves 22 to slide on the inside of the fixed guide rail 21. When the two movable sleeves 22 move, they drive the mounting plate 5 and the support frame 6 to move. The movement of the movable sleeves 22 further drives the connecting frame 8 and the armrest frame 23 to move, so that the armrest part of the seat can be raised and lowered. After adjusting the height of the armrest to the appropriate position, turn off the motor.

[0054] It should be noted that the length of the screw rod 3 is shorter than the length of the fixed guide rail 21. When the body of the screw rod lifter 4 moves to the highest point on the screw rod 3, the movable sleeve 22 will not separate from the fixed guide rail 21, and normal use will not be affected.

[0055] The implementation principle of a lifting armrest and a seat with the lifting armrest in an embodiment of the present application is: by controlling the dual-axis motor 7 to adjust the height of the support armrest 2, the height of the support armrest 2 can be suitable for people of different heights, the dual-axis motor 7 is turned on, and the rotating shaft of the dual-axis motor 7 will drive the input shafts of the two screw lifts 4. The bodies of the two screw lifts 4 will move up and down on the surface of the screw 3, and the bodies of the screw lifts 4 will drive the movable sleeve 22 and the armrest frame 23 to move up and down on the inner side of the fixed guide rail 21, further making the height of the support armrest 2 adjustable, and finally adjusting the support armrest 2 to a comfortable position according to the needs of the user.

[0056] Example 2

[0057] Reference Figure 7 , which is different from Example 1, is that a chair with the lifting armrest includes support armrests 2 arranged on both sides of the seat body 1 for achieving lifting.

[0058] The support armrests 2 on both sides of the seat body 1 can realize the lifting function by being driven by the dual-axis motor 7. When the height of the support armrests 2 is reduced to the lowest, the outer surface of the support armrests is flush with the surface of the seat cushion, thereby increasing the seat's accommodating area and being able to accommodate more people.

[0059] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A lifting armrest, characterized in that: The invention comprises support armrests (2) arranged on both sides of the seat, the support armrests (2) comprising an armrest frame (23) for providing support to the hands and a fixed guide rail (21), a movable sleeve (22) being slidably arranged on the inner side of the fixed guide rail (21), a support block (211) being fixedly arranged on the bottom of the fixed guide rail (21), a connecting frame (8) for supporting the armrest frame (23) being arranged on one side of the movable sleeve (22), a screw lift (4) for controlling the lifting of the armrest frame (23) being arranged on the inner side of the movable sleeve (22), the screw lift (4) comprising a screw (3) fixedly connected to the top surface of the support block (211), and a mounting plate (5) being fixedly arranged in the middle of the movable sleeve (22) for clamping with a dual-axis motor (7); The edges of the upper and lower ends of the mounting plate (5) are provided with flanges (56), a mounting groove (51) for placing the dual-axis motor (7) is provided in the middle of the mounting plate (5), two clamping blocks (52) are provided on the two end surfaces of the mounting groove (51), two curved surfaces (57) are provided outward at both ends of the mounting plate (5), two through grooves (55) for the rotating shaft of the dual-axis motor (7) to move are provided in the middle of the two curved surfaces (57), two clamping blocks (53) for clamping with the rotating sleeve (54) are provided on the adjacent side surfaces of the two through grooves (55), and two convex surfaces (59) for contacting with the screw lift (4) are provided at both ends of the mounting plate (5).

2. The lifting armrest according to claim 1, characterized in that: The surface of the screw lift (4) is clamped with a support frame (6), the middle of the support frame (6) is provided with a circular groove (61) for the screw (3) to move, and the surface of the support frame (6) is provided with two second mounting holes (62).

3. The lifting armrest according to claim 1, characterized in that: Four mounting holes (58) are provided on the surface of the mounting plate (5), and a side of the mounting plate (5) close to the movable sleeve (22) abuts against a side of the movable sleeve (22) close to the mounting plate (5).

4. The lifting armrest according to claim 1, characterized in that: A square groove (221) for placing the screw lift (4) is provided in the middle of one side of the movable sleeve (22) close to the mounting plate (5).

5. The lifting armrest according to claim 1, characterized in that: The rotating shaft of the dual-shaft motor (7) movably passes through the rotating sleeve (54).

6. The lifting armrest according to claim 1, characterized in that: Two U-shaped plates (231) of different sizes are fixedly provided at both ends of the bottom of the handrail frame (23), and the bottom surfaces of the two U-shaped plates (231) abut against the top of the connecting frame (8).

7. The lifting armrest according to claim 1, characterized in that: Support surfaces (82) are provided on both sides of the connecting frame (8), a connecting hole (81) is provided on the surface of the connecting frame (8), and the side of the connecting frame (8) close to the movable sleeve (22) abuts against the side of the movable sleeve (22) close to the connecting frame (8).

8. A chair with a liftable armrest, applied to a liftable armrest according to any one of claims 1 to 7, characterized in that: It comprises support armrests (2) arranged on both sides of a seat body (1) for achieving lifting.

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