A hinge drive mechanism for a shampoo chair

Abstract

The utility model belongs to hair washing and hairdressing equipment technical field, especially point to a hinge drive mechanism of hair washing chair, including the hair washing chair main part and the basin body of setting in the hair washing chair main part head end, the hair washing chair main part is equipped with backrest, seat pad and foot pad, the backrest, seat pad and the back of foot pad are provided with backrest connecting rod, seat pad connecting rod and foot pad connecting rod respectively, the head end of backrest connecting rod is hinged on the hair washing chair main part, the tail portion of backrest connecting rod and the head portion of seat pad connecting rod hinged cooperation, and the tail end of backrest connecting rod is hinged cooperation through foot pad linkage lever and the head portion of foot pad connecting rod, the head end of seat pad connecting rod is hinged cooperation through seat pad linkage lever and the hair washing chair main part, the tail end of seat pad connecting rod and the head portion of foot pad connecting rod hinged cooperation, the hair washing chair main part and seat pad are hinged and have telescopic power source. The utility model is linked by the specific hinge point linkage between each connecting rod in connecting rod mechanism, and only through a telescopic power source can drive backrest, seat pad and foot pad to carry out synchronous unfolding or contraction movement.

Description

Technical Field

[0001] This utility model belongs to the technical field of hair washing and styling equipment, specifically referring to a hinge drive mechanism for a hair washing chair. Background Technology

[0002] Currently, shampoo chairs widely used in industries such as beauty salons, hair salons, and medical care typically have the function of allowing users to switch between sitting and reclining positions. The core of this function lies in the hinge drive mechanism designed inside the seat.

[0003] Traditional shampoo chair hinge drive mechanisms mostly use multiple independent power sources to control the opening and closing of the backrest, seat cushion, and footrest separately through linkages or complex gear transmission components. This not only easily leads to problems such as asynchronous driving of multiple independent power sources and unstable seat posture switching, but also makes the shampoo chair expensive, bulky, and difficult to move. Summary of the Invention

[0004] The purpose of this invention is to provide a hinge drive mechanism for a shampoo chair, which uses only a telescopic power source and a linkage mechanism to drive the backrest, seat cushion and footrest to move synchronously. It has a simple structure, fewer parts, low cost and significantly reduces the overall weight of the shampoo chair.

[0005] This utility model is implemented as follows: A hinge drive mechanism for a shampoo chair includes a shampoo chair body and a basin disposed at the head end of the shampoo chair body. The shampoo chair body is provided with a backrest, a seat cushion, and a footrest sequentially from head to tail. The backrest, seat cushion, and footrest are respectively provided with backrest connecting rods, seat cushion connecting rods, and footrest connecting rods along their corresponding length directions on the inner side of the back side. The head end of the backrest connecting rod is hinged to the shampoo chair body, and the tail end of the backrest connecting rod is hinged to the head of the seat cushion connecting rod. The tail end of the backrest connecting rod is hinged to the head of the footrest connecting rod through a footrest connecting rod. The head end of the seat cushion connecting rod is hinged to the shampoo chair body through a seat cushion connecting rod, and the tail end of the seat cushion connecting rod is hinged to the head end of the footrest connecting rod. A telescopic power source is hinged between the shampoo chair body and the seat cushion. The telescopic power source drives the extension and retraction of the backrest, seat cushion, and footrest to form a reclining posture or to retract to form a sitting posture.

[0006] In the hinge drive mechanism of the aforementioned shampoo chair, the backrest linkage includes a backrest support rod fixed to the backrest and a backrest tilting rod whose middle part is fixed to the tail end of the backrest support rod. The upper end of the backrest tilting rod is inclined toward the backrest support rod, and the lower end of the backrest tilting rod is hinged to the foot pad linkage rod through a foot pad linkage rod. The seat cushion linkage includes a seat cushion support rod fixed on the seat cushion and a seat cushion tilting rod fixed in the middle to the tail end of the seat cushion support rod. The upper end of the seat cushion tilting rod is tilted toward the seat cushion support rod. The lower end of the seat cushion support rod is hinged to the main body of the shampoo chair through the seat cushion linkage rod. The upper end of the backrest tilting rod is hinged to the upper end of the seat cushion tilting rod.

[0007] In the hinge drive mechanism of the aforementioned shampoo chair, the included angle between the axis of the backrest support rod and the axis of the backrest tilting rod is 45°-65°. The angle of inclination between the axis of the seat cushion support rod and the axis of the seat cushion tilting rod is 45°-65°.

[0008] In the hinge drive mechanism of the aforementioned shampoo chair, there are two of each of the backrest link, seat cushion link, and footrest link, which are distributed parallel to each other on the left and right. A transverse support beam is provided between the two seat cushion links, located below the rear of the seat cushion. The telescopic end of the telescopic power source is hinged to the middle of the transverse support beam.

[0009] In the hinge drive mechanism of the aforementioned shampoo chair, the telescopic power source is an electric telescopic push rod or a telescopic cylinder.

[0010] In the hinge drive mechanism of the aforementioned shampoo chair, the main body of the shampoo chair includes a cabinet and a chair frame from head to tail. The cabinet is used to support and fix the basin. The backrest, seat cushion linkage rod and telescopic power source are all hinged to the chair frame. The left baffle and the right baffle are located on the left and right sides of the cabinet and the chair frame, respectively, and the left baffle and the right baffle are fixed to the corresponding side walls of the cabinet and the chair frame by fasteners.

[0011] The outstanding advantages of this utility model compared to the prior art are: This utility model has a simple structure, reasonable design and low cost. By using the specific hinge points between the links in the linkage mechanism, the backrest, seat cushion and footrest can be driven to expand or contract synchronously by only one telescopic power source. Its overall transmission is stable and reliable, the number of parts is small, and the overall weight of the shampoo chair is greatly reduced. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural view of the reclining posture of the shampoo chair of this utility model; Figure 2 This is a structural cross-sectional view of the reclining posture of the shampoo chair of this utility model; Figure 3 This is a structural cross-sectional view of the shampoo chair of this utility model in its sitting posture.

[0013] In the diagram: 1. Basin; 2. Backrest; 3. Seat cushion; 4. Foot pad; 5. Backrest connecting rod; 6. Seat cushion connecting rod; 7. Foot pad pull rod; 8. Foot pad linkage rod; 9. Seat cushion linkage rod; 10. Telescopic power source; 11. Backrest support rod; 12. Backrest tilting rod; 13. Seat cushion support rod; 14. Seat cushion tilting rod; 15. Horizontal support beam; 16. Cabinet; 17. Chair frame; 18. Left baffle; 19. Right baffle; 20. Foot pad limiting plate. Detailed Implementation

[0014] The present invention will be further described below with reference to specific embodiments. See also: Figure 1 —3: A hinge drive mechanism for a shampoo chair includes a shampoo chair body and a basin 1 disposed at the head end of the shampoo chair body. The shampoo chair body is provided with a backrest 2, a seat cushion 3, and a foot pad 4 sequentially from head to tail. The backrest 2, seat cushion 3, and foot pad 4 are respectively provided with a backrest connecting rod 5, a seat cushion connecting rod 6, and a foot pad connecting rod 7 along their corresponding length directions on the inner back side surfaces. The head end of the backrest connecting rod 5 is hinged to the shampoo chair body, and the tail end of the backrest connecting rod 5 is hinged to the head of the seat cushion connecting rod 6. Furthermore, the tail end of the backrest link 5 is hinged to the head of the foot pad link 7 via the foot pad linkage 8, and the head end of the seat cushion link 6 is hinged to the main body of the shampoo chair via the seat cushion linkage 9. The tail end of the seat cushion link 6 is hinged to the head end of the foot pad link 7. A telescopic power source 10 is hinged between the main body of the shampoo chair and the seat cushion 3. The telescopic power source 10 drives the backrest 2, seat cushion 3 and foot pad 4 to unfold to form a reclining posture or retract to form a sitting posture.

[0015] The telescopic power source 10 is located between the main body of the shampoo chair and the seat cushion 3. Most of the human body weight is concentrated on the seat cushion 3. The telescopic power source 10 can effectively and directly act on the seat cushion 3 to generate a torque sufficient to drive the human body weight, thus having a high energy efficiency ratio.

[0016] This utility model has a simple structure, reasonable design and low cost. By using the specific hinge points between the links in the linkage mechanism, the backrest 2, seat cushion 3 and foot pad 4 can be driven to expand or contract synchronously by only one telescopic power source 10. Its overall transmission is stable and reliable, the number of parts is small, and the overall weight of the shampoo chair is greatly reduced.

[0017] Furthermore, by reasonably changing the hinge point positions between the linkage mechanisms, the fitting angles between the backrest 2 and the seat cushion 3, and between the seat cushion 3 and the foot pad 4, are optimized. The backrest linkage 5 includes a backrest support rod 11 fixed to the backrest 2, and a backrest tilting rod 12 whose middle part is fixed to the tail end of the backrest support rod 11. The upper end of the backrest tilting rod 12 is tilted towards the backrest support rod 11, and the lower end of the backrest tilting rod 12 is connected to the foot pad 4. The cushion linkage rod 8 is hinged to the footpad linkage rod 7. Simultaneously, the seat cushion linkage rod 6 includes a seat cushion support rod 13 fixed to the seat cushion 3, and a seat cushion tilting rod 14 whose middle part is fixed to the tail end of the seat cushion support rod 13. The upper end of the seat cushion tilting rod 14 is tilted towards the seat cushion support rod 13. The lower end of the seat cushion 3 support rod is hinged to the main body of the shampoo chair via the seat cushion linkage rod 9. The upper end of the backrest tilting rod 12 is hinged to the upper end of the seat cushion tilting rod 14. That is, by utilizing the opposite tilting directions of the backrest tilting rod 12 and the seat cushion tilting rod 14, the hinge point between the backrest 2 and the seat cushion 3 is reasonably raised and shortened, and the hinge transmission length between the footpad 4 and the bed frame is extended.

[0018] In this embodiment, the angle of inclination between the axis of the backrest support rod 11 and the axis of the backrest tilting rod 12 is 45°-65°, and the angle of inclination between the axis of the seat cushion support rod 13 and the axis of the seat cushion tilting rod 14 is 45°-65°. In this embodiment, the angle of inclination between the axis of the backrest support rod 11 and the axis of the backrest tilting rod 12 is 50°, the angle of inclination between the axis of the seat cushion support rod 13 and the axis of the seat cushion tilting rod 14 is 50°, and the length of the seat cushion tilting rod 14 is less than the length of the backrest tilting rod 12.

[0019] In order to improve the transmission stability of the hinge drive mechanism to the backrest 2, seat cushion 3 and foot pad 4, there are two of each of the backrest connecting rod 5, seat cushion connecting rod 6 and foot pad connecting rod 7, which are distributed in parallel on the left and right sides. A transverse support beam 15 is provided between the two seat cushion connecting rods 6 and located below the tail of the seat cushion 3. The telescopic end of the telescopic power source 10 is hinged to the middle of the transverse support beam 15.

[0020] Furthermore, the telescopic power source 10 is an electric telescopic push rod or a telescopic cylinder. In this embodiment, the telescopic power source 10 is an electric telescopic push rod.

[0021] In addition, to protect the hinge drive mechanism from external interference, the main body of the shampoo chair includes a cabinet 16 and a chair frame 17 from head to tail. The cabinet 16 supports and fixes the basin 1. The backrest 2, seat cushion linkage rod 9, and telescopic power source 10 are all hinged to the chair frame 17. The left baffle 18 and right baffle 19 are located on the left and right sides of the cabinet 16 and chair frame 17, respectively, and are fixed to the corresponding side walls of the cabinet 16 and chair frame 17 by fasteners. Furthermore, a foot pad limiting plate 20 is provided between the left baffle 18 and right baffle 19, located inside the foot pad 4. That is, when the telescopic power source 10 drives the backrest 2, seat cushion 3, and foot pad 4 to retract and form a sitting posture, the back side of the foot pad 4 abuts against the foot pad limiting plate 20.

[0022] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A hinge drive mechanism for a shampoo chair, comprising a shampoo chair body and a basin (1) disposed at the head end of the shampoo chair body, wherein the shampoo chair body is provided with a backrest (2), a seat cushion (3) and a footrest (4) sequentially from head to tail, characterized in that: The backrest (2), seat cushion (3) and foot pad (4) are respectively provided with backrest connecting rod (5), seat cushion connecting rod (6) and foot pad connecting rod (7) along the corresponding length direction on the inner side of the back side. The head end of the backrest connecting rod (5) is hinged to the main body of the shampoo chair, and the tail end of the backrest connecting rod (5) is hinged to the head of the seat cushion connecting rod (6). The tail end of the backrest connecting rod (5) is hinged to the head of the foot pad connecting rod (7) through the foot pad linkage rod (8). The head end of the seat cushion connecting rod (6) is hinged to the main body of the shampoo chair through the seat cushion linkage rod (9). The tail end of the seat cushion connecting rod (6) is hinged to the head end of the foot pad connecting rod (7). A telescopic power source (10) is hinged between the main body of the shampoo chair and the seat cushion (3). The telescopic power source (10) drives the backrest (2), seat cushion (3) and foot pad (4) to unfold to form a reclining posture or retract to form a sitting posture.

2. The hinge drive mechanism of a shampoo chair according to claim 1, characterized in that: The backrest link (5) includes a backrest support rod (11) fixed on the backrest (2) and a backrest tilting rod (12) fixed in the middle to the tail end of the backrest support rod (11). The upper end of the backrest tilting rod (12) is tilted towards the backrest support rod (11), and the lower end of the backrest tilting rod (12) is hinged to the foot pad link (7) through the foot pad linkage rod (8). The seat cushion link (6) includes a seat cushion support rod (13) fixed on the seat cushion (3) and a seat cushion tilting rod (14) fixed in the middle to the tail end of the seat cushion support rod (13). The upper end of the seat cushion tilting rod (14) is tilted toward the seat cushion support rod (13). The lower end of the seat cushion (3) support rod is hinged to the main body of the shampoo chair through the seat cushion linkage rod (9). The upper end of the backrest tilting rod (12) is hinged to the upper end of the seat cushion tilting rod (14).

3. The hinge drive mechanism of a shampoo chair according to claim 2, characterized in that: The angle of inclination between the axis of the backrest support rod (11) and the axis of the backrest tilting rod (12) is 45°-65°. The angle of inclination between the axis of the seat support rod (13) and the axis of the seat tilt rod (14) is 45°-65°.

4. The hinge drive mechanism of a shampoo chair according to claim 1, characterized in that: The backrest link (5), seat cushion link (6) and foot pad link (7) are all arranged in parallel left and right. A transverse support beam (15) located below the tail of the seat cushion (3) is provided between the two seat cushion links (6). The telescopic end of the telescopic power source (10) is hinged to the middle of the transverse support beam (15).

5. The hinge drive mechanism of a shampoo chair according to claim 1 or 4, characterized in that: The telescopic power source (10) is an electric telescopic push rod or a telescopic cylinder.

6. The hinge drive mechanism of a shampoo chair according to claim 1 or 4, characterized in that: The main body of the shampoo chair includes a cabinet (16) and a chair frame (17) from head to tail. The cabinet (16) is used to support and fix the basin (1). The backrest (2), seat cushion linkage rod (9) and telescopic power source (10) are all hinged to the chair frame (17). The left baffle (18) and the right baffle (19) are located on the left and right sides of the cabinet (16) and the chair frame (17) respectively. The left baffle (18) and the right baffle (19) are fixed to the corresponding side walls of the cabinet (16) and the chair frame (17) respectively by fasteners.

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