Light shield and chair frame linkage opening and closing mechanism and sunshade chair

Abstract

The utility model provides a light shield and chair frame linkage opening and closing mechanism. The light shield and chair frame linkage opening and closing mechanism comprises a bottom frame, a chair frame rotationally connected with the bottom frame, a mounting seat fixedly arranged at the upper end of the chair frame, an upper swing rod rotationally connected with the mounting seat, a light shield fixedly arranged on the upper swing rod and arranged above the mounting seat, and an elastic piece connected with the upper swing rod and the bottom frame. When the chair frame is in a lying posture, the distance between the upper swing rod and the bottom frame is the shortest distance, so that the elastic piece is in a relaxed state, and the light shield is kept in a closed state under the action of gravity; when the chair frame is in a sitting posture, the distance between the upper swing rod and the bottom frame is the longest distance, the elastic piece is in a tightened state, the sunshade is kept in an open state through the elastic piece, and by means of the structure, when a user uses a lying posture, the sunshade is automatically attached to the chair frame to achieve maximum sunshade; when the user is switched from the lying posture to the sitting posture and gets up, the sun shade is automatically far away from the chair frame, and interference with the getting-up action of the user is avoided.

Description

Technical Field

[0001] This utility model relates to the field of sunshade chair technology, specifically to a sunshade cover and chair frame linkage opening and closing mechanism and a sunshade chair. Background Technology

[0002] When using a chair, users typically install a sunshade above it to provide shade. However, in existing sunshade chair designs, there is usually no linkage mechanism between the sunshade and the chair frame. When the user is in a reclining position, the sunshade cannot automatically align with the chair frame to achieve maximum sun protection; when the user switches from a reclining position to a sitting position and gets up, the sunshade cannot automatically move away from the chair frame, which can easily interfere with the user's movement. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to propose a sunshade and chair frame linkage opening and closing mechanism and a sunshade chair to solve the problems mentioned in the background section above.

[0004] This utility model is achieved through the following technical solution:

[0005] A light shield and chair frame linkage opening and closing mechanism includes a base frame, a chair frame rotatably connected to the base frame, a mounting base fixed to the upper end of the chair frame, an upper swing rod rotatably connected to the mounting base, a light shield fixed to the upper swing rod and disposed above the mounting base, and an elastic member connecting the upper swing rod and the base frame. When the chair frame is in a reclining position, the distance between the upper swing rod and the base frame is at its shortest distance, causing the elastic member to be in a relaxed state, and the light shield remains closed under the action of gravity. When the chair frame is in a sitting position, the distance between the upper swing rod and the base frame is at its longest distance, causing the elastic member to be in a taut state, and the light shield remains open through the elastic member.

[0006] Furthermore, the base frame includes a support seat and a lower swing rod. One end of the lower swing rod is rotatably connected to the support seat, and the other end of the lower swing rod is rotatably connected to the chair frame. The elastic element is connected to the lower swing rod. When the chair frame switches from a reclining posture to a sitting posture, the lower swing rod and the upper swing rod swing together and the distance between them increases.

[0007] Furthermore, the front and rear ends of the light shield are respectively provided with an opening limiting surface and a closing limiting surface. When the light shield is in the closed state, the closing limiting surface abuts against the mounting base; when the light shield is in the open state, the opening limiting surface abuts against the mounting base.

[0008] Furthermore, the elastic element includes a woven strip and a tension spring connected to each other, with one end of the woven strip connected to the upper swing arm and one end of the tension spring connected to the lower swing arm.

[0009] Furthermore, the rear end of the chair frame is provided with several guide wheels for clamping the woven strap.

[0010] Furthermore, the upper swing arm includes a crossbar and a connecting rod. The crossbar and the connecting rod are arranged perpendicularly. Both ends of the crossbar are embedded in the sunshade, and the lower end of the connecting rod is used to connect to the woven strap.

[0011] Furthermore, the chair frame is provided with protective plates at both ends. When the sunshade is closed, the lower end face of the sunshade is flush with the upper end face of the protective plate.

[0012] Furthermore, it also includes an electric telescopic cylinder, the lower end of which is rotatably connected to the base frame, and the telescopic end of which is rotatably connected to the front end of the chair frame.

[0013] On the other hand, this utility model provides a sunshade chair, including a sunshade cover and chair frame linkage opening and closing mechanism as described in any of the preceding claims.

[0014] The beneficial effects of this utility model are as follows: A sunshade and chair frame linkage opening and closing mechanism includes a base frame, a chair frame rotatably connected to the base frame, a mounting seat fixed to the upper end of the chair frame, an upper swing rod rotatably connected to the mounting seat, a sunshade fixed to the upper swing rod and positioned above the mounting seat, and an elastic member connecting the upper swing rod and the base frame. When the chair frame is in a reclining posture, the distance between the upper swing rod and the base frame is at its shortest, causing the elastic member to be in a relaxed state, and the sunshade remains closed under the action of gravity. When the chair frame is in a sitting posture, the distance between the upper swing rod and the base frame is at its longest, causing the elastic member to be in a taut state, and the sunshade remains open through the elastic member. With the above structure, when the user is in a reclining posture, the sunshade automatically adheres to the chair frame to achieve maximum sun shading; when the user switches from a reclining posture to a sitting posture and gets up, the sunshade automatically moves away from the chair frame to avoid interference with the user's getting up movement. Attached Figure Description

[0015] Figure 1 This is a perspective view of the chair frame of this utility model in a reclining position.

[0016] Figure 2 This is a cross-sectional view of the chair frame of this utility model in a reclining position.

[0017] Figure 3 This is a cross-sectional view of the chair frame of this utility model in a sitting posture.

[0018] Figure 4 This is a schematic diagram showing the connection between the mounting base and the sunshade of this utility model.

[0019] Figure 5 This is a schematic diagram showing the connection between the chair frame and the elastic element of this utility model.

[0020] Figure 6 This is a schematic diagram showing the connection between the sunshade and the upper swing arm of this utility model.

[0021] Figure 7 This is a partial exploded view of the present invention.

[0022] The above figures include the following reference numerals:

[0023] 1. Base frame; 11. Support base; 12. Lower swing arm; 2. Chair frame; 21. Guide wheel; 22. Guard plate; 3. Mounting base; 4. Upper swing arm; 41. Crossbar; 42. Connecting rod; 5. Sunshade; 51. Opening limit surface; 52. Closing limit surface; 6. Elastic element; 61. Braided belt; 62. Tension spring; 7. Electric telescopic cylinder; 71. Telescopic end. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is intended to aid in understanding this utility model, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] Reference Figures 1 to 6 As shown, a light shield and chair frame linkage opening and closing mechanism includes a base frame 1, a chair frame 2 rotatably connected to the base frame 1, a mounting base 3 fixed to the upper end of the chair frame 2, an upper swing rod 4 rotatably connected to the mounting base 3, a light shield 5 fixed to the upper swing rod 4 and disposed above the mounting base 3, and an elastic member 6 connecting the upper swing rod 4 and the base frame 1. When the chair frame 2 is in a reclining posture, the distance between the upper swing rod 4 and the base frame 1 is at its shortest distance, causing the elastic member 6 to be in a relaxed state, and the light shield 5 remains closed under the action of gravity. When the chair frame 2 is in a sitting posture, the distance between the upper swing rod 4 and the base frame 1 is at its longest distance, causing the elastic member 6 to be in a taut state, and the light shield 5 remains open through the elastic member 6.

[0026] Specifically, refer to Figure 1 and Figure 2 As shown, when the chair frame 2 is in a reclining position, the light shield 5 remains closed under the influence of gravity; (Refer to...) Figure 3As shown, when the chair frame 2 is in a sitting position, the upper swing arm 4 is pulled by the elastic element 6 to rotate, so that one end of the sunshade 5 follows the upper swing arm 4 to rotate, and the other end of the sunshade 5 moves away from the chair frame 2 and switches to the open state, thereby avoiding interference between the sunshade 5 and the user's getting up.

[0027] Reference Figure 2 and Figure 3 As shown, the base frame 1 includes a support base 11 and a lower swing rod 12. One end of the lower swing rod 12 is rotatably connected to the support base 11, and the other end of the lower swing rod 12 is rotatably connected to the chair frame 2. The elastic element 6 is connected to the lower swing rod 12. When the chair frame 2 switches from a reclining posture to a sitting posture, the lower swing rod 12 and the upper swing rod 4 swing and increase the distance between them, thereby causing the elastic element 6 to switch from a relaxed state to a taut state, and keeping the sunshade 5 open through the elastic element 6.

[0028] Reference Figure 4 As shown, the front and rear ends of the light shield 5 are respectively provided with an opening limiting surface 51 and a closing limiting surface 52. When the light shield 5 is in the closed state, the closing limiting surface 52 abuts against the mounting base 3; when the light shield 5 is in the open state, the opening limiting surface 51 abuts against the mounting base 3. The opening limiting surface 51 and the closing limiting surface 52 can ensure that the light shield 5 is accurately positioned when opening and closing, avoiding excessive or insufficient gaps between the light shield 5 and the chair frame 2, thereby ensuring the sunshade effect of the light shield 5. At the same time, it can prevent excessive movement of the light shield 5 during opening or closing, thus preventing interference.

[0029] In one embodiment, the elastic element 6 includes a braided strip 61 and a tension spring 62 connected to each other. One end of the braided strip 61 is connected to the upper swing rod 4, and one end of the tension spring 62 is connected to the lower swing rod 12. In another embodiment, the elastic element 6 can be an external elastic rope. The component structure of the above elastic element 6 is relatively simple, which facilitates manufacturing and installation and reduces production costs.

[0030] The front and rear ends of the light shield 5 are respectively provided with an opening limiting surface 51 and a closing limiting surface 52. Therefore, when the chair frame 2 is in a sitting posture, the opening limiting surface 51 acts first, and the braided strap 61 and the tension spring 62 are tightened under the action of the opening limiting surface 51. When the chair frame 2 is in a reclining posture, the closing limiting surface 52 acts first, and the braided strap 61 and the tension spring 62 are relaxed and reset under the action of the closing limiting surface 52.

[0031] Reference Figure 5As shown, the rear end of the chair frame 2 is provided with several guide wheels 21 for clamping the woven strap 61. The guide wheels 21 guide the woven strap 61 along a specific path, ensuring smooth sliding of the woven strap 61 during the opening and closing of the sunshade, preventing the woven strap 61 from deviating from its track or getting stuck, and improving the stability of the sunshade's movement. Simultaneously, the guide wheels 21 reduce friction between the woven strap 61 and the chair frame 2, thereby reducing wear on the woven strap 61 and extending its service life. The guide wheels 21 distribute the force on the woven strap 61 over a larger contact area, reducing excessive localized stress on the woven strap 61, thus lowering the risk of fatigue damage.

[0032] Reference Figure 6 As shown, the upper swing arm 4 includes a horizontal bar 41 and a connecting rod 42. The horizontal bar 41 and the connecting rod 42 are arranged perpendicularly. Both ends of the horizontal bar 41 are embedded in the sunshade 5, and the lower end of the connecting rod 42 is used to connect to the woven strap 61. This structure forms a stable frame that effectively supports the sunshade 5, ensuring its stability during use and preventing it from swaying due to external forces or user actions.

[0033] Furthermore, the chair frame 2 is equipped with guard plates 22 at both ends. When the sunshade 5 is closed, the lower end surface of the sunshade 5 is flush with the upper end surface of the guard plate 22. The guard plate 22 can block side sunlight, forming an all-round sunshade effect together with the sunshade 5, reducing sunlight penetration from the side and improving the comprehensiveness and effectiveness of sunshade. Users can rely on the guard plate 22 for better support and protection. When the user is an infant or toddler, the guard plate 22 can prevent the infant or toddler from sliding off or falling off the side while using the sunshade chair, providing additional safety.

[0034] Furthermore, it also includes an electric telescopic cylinder 7, the lower end of which is rotatably connected to the base frame 1, and the telescopic end 71 of which is rotatably connected to the front end of the chair frame 2. By extending and retracting the telescopic end 71 of the electric telescopic cylinder 7, the chair frame 2 can switch between a reclining posture and a sitting posture.

[0035] Reference Figure 7 As shown, the mounting base 3 is fixedly connected to the upper end of the chair frame 2. The guard plate 22 and the outer end face of the mounting base 3 are arc-shaped to ensure aesthetics. The upper swing rod 4 is inserted into the mounting base 3 from top to bottom and is rotatably connected to the mounting base 3. The rear end of the light shield 5 is connected to the crossbar 41 of the upper swing rod 4, thus completing the assembly.

[0036] On the other hand, this utility model provides a sunshade chair, including a sunshade cover and chair frame linkage opening and closing mechanism as described in any of the above claims, so that the sunshade chair has the beneficial effects of the aforementioned sunshade cover and chair frame linkage opening and closing mechanism, wherein the chair frame 2 is used to install seat cushion sofa and back cushion sofa, thereby providing users with a comfortable riding experience.

[0037] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mechanism for the linkage between a light shield and a chair frame in opening and closing, characterized in that: Includes a base frame (1), a chair frame (2) rotatably connected to the base frame (1), a mounting base (3) fixed to the upper end of the chair frame (2), an upper swing rod (4) rotatably connected to the mounting base (3), a light shield (5) fixed to the upper swing rod (4) and disposed above the mounting base (3), and an elastic member (6) connecting the upper swing rod (4) and the base frame (1); When the chair frame (2) is in a reclining posture, the distance between the upper swing arm (4) and the base frame (1) is at its shortest distance, so that the elastic element (6) is in a relaxed state, and the sunshade (5) remains closed under the action of gravity; When the chair frame (2) is in a sitting position, the distance between the upper swing arm (4) and the base frame (1) is at its maximum, so that the elastic element (6) is in a taut state, and the sunshade (5) is kept open by the elastic element (6).

2. The light shield and chair frame linkage opening and closing mechanism according to claim 1, characterized in that: The base frame (1) includes a support base (11) and a lower swing rod (12). One end of the lower swing rod (12) is rotatably connected to the support base (11), and the other end of the lower swing rod (12) is rotatably connected to the chair frame (2). The elastic element (6) is connected to the lower swing rod (12). When the chair frame (2) switches from a reclining posture to a sitting posture, the lower swing rod (12) and the upper swing rod (4) swing and the distance between them increases.

3. The light shield and chair frame linkage opening and closing mechanism according to claim 1, characterized in that: The front and rear ends of the light shield (5) are respectively provided with an opening limiting surface (51) and a closing limiting surface (52). When the light shield (5) is in the closed state, the closing limiting surface (52) abuts against the mounting base (3); when the light shield (5) is in the open state, the opening limiting surface (51) abuts against the mounting base (3).

4. The light shield and chair frame linkage opening and closing mechanism according to claim 2, characterized in that: The elastic element (6) includes a braided strip (61) and a tension spring (62) connected to each other. One end of the braided strip (61) is connected to the upper swing rod (4), and one end of the tension spring (62) is connected to the lower swing rod (12).

5. The light shield and chair frame linkage opening and closing mechanism according to claim 4, characterized in that: The rear end of the chair frame (2) is provided with a plurality of guide wheels (21) for clamping the woven belt (61).

6. The light shield and chair frame linkage opening and closing mechanism according to claim 4, characterized in that: The upper swing arm (4) includes a horizontal bar (41) and a connecting rod (42). The horizontal bar (41) and the connecting rod (42) are arranged perpendicularly. The two ends of the horizontal bar (41) are embedded in the light shield (5). The lower end of the connecting rod (42) is used to connect the braided belt (61).

7. The light shield and chair frame linkage opening and closing mechanism according to claim 1, characterized in that: The chair frame (2) has guard plates (22) at both ends. When the light shield (5) is closed, the lower end face of the light shield (5) is flush with the upper end face of the guard plate (22).

8. The light shield and chair frame linkage opening and closing mechanism according to claim 1, characterized in that: It also includes an electric telescopic cylinder (7), the lower end of which is rotatably connected to the base frame (1), and the telescopic end (71) of which is rotatably connected to the front end of the chair frame (2).

9. A sunshade chair, characterized in that: Includes a light shield and chair frame linkage opening and closing mechanism as described in any one of claims 1 to 8.

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