Wearable portable seat

Abstract

The wearable portable seat comprises a cushion and a supporting device, the supporting device comprises a thigh supporting frame, a first supporting mechanism, a shank supporting frame and a second supporting mechanism, the first supporting mechanism comprises a rotating piece, a connecting piece, a first control arm and a second control arm, and the rotating piece is rotationally connected with the connecting piece; the rotating part comprises a rotating shaft and a one-way tooth, the one-way tooth is arranged along the outer side edge of the rotating shaft, an included angle is formed between the first control arm and the second control arm, the first control arm downwards makes contact with the thigh supporting frame, the second control arm does not abut against the one-way tooth, the first control arm and the thigh supporting frame are spaced by a distance, and the second control arm abuts against the one-way tooth. The first supporting mechanism is connected with the thigh supporting frame and the shank supporting frame, the rotating piece drives the shank supporting frame to rotate along the center shaft of the rotating piece, the included angle between the shank supporting frame and the thigh supporting frame and the ground is adjusted, and the stability and safety during sitting are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of portable seats, in particular to a wearable portable seat. Background Art

[0002] The main function of a wearable seat is to provide users with instant rest and support when needed, especially in places where there are no traditional seats; wearable seats are suitable for outdoor activities, long-term standing work environments or travel; existing wearable portable seats have the following problems: first, in order to maintain lightness and compactness, the comfort and strength of the seat are sacrificed; second, the traditional support method cannot provide sufficient support under some specific working conditions, such as on uneven or slippery ground; in addition, the existing wearable portable seats have a single adjustment method and cannot adapt to the personal needs of people of different body shapes; finally, the existing wearable portable seats are limited in convenience and safety. For example, in crowded or fast-moving situations, the support legs of existing portable seats cannot be quickly retracted, resulting in the user's calves being unable to bend, posing a safety hazard; for another example, in order to improve the stability of the portable seat support, multiple support legs are designed, which increases the weight and volume of the portable seat and makes it inconvenient to carry. Therefore, it is necessary to design an adjustable and firmly supported portable seat. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art and provide a wearable portable chair, which adopts a first support mechanism to connect the thigh support frame and the calf support frame, thereby improving the support strength of the connection between the thigh support frame and the calf support frame. The rotating member of the first support mechanism drives the calf support frame to rotate along the central axis of the rotating member, adjusts the angle between the calf support frame and the thigh support frame, and the calf support frame and the ground, thereby improving the stability and safety when sitting. The one-way locking feature of the first support mechanism allows the calf support frame to be quickly folded and fixed, thereby improving the convenience and safety of using the portable chair under mobile conditions.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a wearable portable chair, including a seat cushion and a support device, the number of the support devices is two, and the two support devices are symmetrically arranged on the left and right sides of the seat cushion, each of the support devices includes a thigh support frame, a first support mechanism, a calf support frame and a second support mechanism, the upper and lower ends of the first support mechanism are respectively connected to the thigh support frame and the calf support frame, and the end of the calf support frame away from the first support mechanism is rotatably connected to the second support mechanism; the first support mechanism includes a rotating member, a connecting member, a first control arm and a second control arm The top of the connecting member is fixedly connected to the thigh support frame, and the bottom of the rotating member is fixedly connected to the calf support frame. The rotating member is rotatably connected to the connecting member, and the rotating member includes a rotating shaft and a one-way tooth, and the one-way tooth is arranged along the outer edge of the rotating shaft. The first control arm is connected to the second control arm, and there is an angle between the first control arm and the second control arm. When the first control arm contacts the thigh support frame downward, the second control arm and the one-way tooth are released from the abutment and the rotating shaft can rotate freely. When the first control arm is spaced a distance from the thigh support frame, the second control arm abuts against the one-way tooth to limit the rotation of the rotating shaft.

[0005] Preferably, the first supporting mechanism further comprises a rotating connecting shaft, and the rotating connecting shaft passes through the rotating shaft and the connecting member so that the rotating shaft rotates around the rotating connecting shaft.

[0006] Preferably, the thigh support frame includes a thigh support frame body and a pull rod mechanism, the pull rod mechanism can be telescopically installed in the thigh support frame body, the pull rod mechanism includes a pull rod mechanism body, a telescopic control member, a telescopic control rod, a first spring, a second spring, a locking pin, a pushing member and a pressing space, the pressing space is located near the top of the pull rod mechanism body, the telescopic control rod is arranged in the pull rod mechanism body, the number of the first springs is multiple, and the multiple first springs are arranged in the pull rod mechanism body at intervals, the top of each first spring is fixedly connected to the bottom vertically arranged on the telescopic control member, the bottom of the telescopic control member is also connected to the top of the telescopic control rod, the top of the telescopic control member penetrates upward into the pressing space and pushes the telescopic control member downward to move the telescopic control rod downward, the second spring is arranged on the bottom side wall of the pull rod mechanism body, the end of the second spring away from the side wall is connected to the locking pin, the pushing member is arranged between the second spring and the locking pin, and the bottom of the telescopic control rod is slidably connected to the pushing member to facilitate the pushing member to squeeze the second spring.

[0007] Preferably, the booster member includes a fixing member and an extrusion member, a side of the extrusion member close to the locking pin is an inclined surface extending toward the bottom, the extrusion member is slidably connected to the fixing member, and the extrusion member and the second spring are located at the same height.

[0008] Preferably, the thigh support frame body includes a support plate, a first through hole and a weight-reducing hole. There are two support plates, and both support plates are installed on the thigh support frame body near the connecting piece. The installation direction of the two support plates is perpendicular to the extension direction of the thigh support frame body. An elastic component is installed between the two support plates, and the first control arm and the second control arm are installed on the elastic component. There are multiple first through holes, and the multiple first through holes are arranged at intervals along the extension direction of the thigh support frame body. The inner diameter of each first through hole matches the outer diameter of the locking pin. There are multiple weight-reducing holes, and the multiple weight-reducing holes are arranged on the thigh support frame body to reduce the weight of the thigh support frame body.

[0009] Preferably, the second support mechanism includes a first support plate, a second support plate, a third support plate and a vertical connecting plate, the two side ends of the third support plate along the length direction are respectively connected to the first support plate and the second support plate, the ends of the first support plate and the second support plate away from the third support plate are respectively connected to the two sides of the vertical connecting plate, the bottom of the vertical connecting plate is connected to the top of the third support plate, the top of the vertical support plate is rotatably connected to the calf support frame, and the bottom surface of the third support plate is provided with an anti-slip pad.

[0010] Preferably, the seat cushion includes a first seat cushion, a second seat cushion, a fixing pin, an adjusting bolt and an adjusting nut, the fixing pin is connected to the thigh support frame, the first seat cushion and the second seat cushion are connected by an adjusting bolt, the ends of the first seat cushion and the second seat cushion away from each other are connected to the fixing pin by an adjusting bolt, and an adjusting nut is provided on the adjusting bolt, and the adjusting nut can be spirally moved along the extension direction of the adjusting bolt to adjust the size of the first seat cushion and the second seat cushion.

[0011] Preferably, both thigh support frames are provided with straps for binding and fixing the thighs.

[0012] Preferably, the thigh support frame and the calf support frame are both made of aluminum alloy, and the seat cushion is made of plastic and is filled with sponge.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The utility model adopts a first supporting mechanism to connect the thigh supporting frame and the calf supporting frame, thereby improving the supporting strength of the connection between the thigh supporting frame and the calf supporting frame. The rotating member of the first supporting mechanism drives the calf supporting frame to rotate along the central axis of the rotating member, and adjusts the angle between the calf supporting frame and the thigh supporting frame, and the calf supporting frame and the ground, thereby improving the stability and safety when sitting. The one-way locking feature of the first supporting mechanism can quickly fold and fix the calf supporting frame, thereby improving the convenience and safety of using the portable seat under mobile conditions.

[0015] 2. The utility model adjusts the length of the thigh support frame by adjusting the length of the pull rod mechanism in the thigh support frame body, is suitable for users of different heights, and improves the applicability of the portable chair.

[0016] 3. The second support mechanism of the utility model utilizes the stability of the triangle to improve the stability of the second support mechanism supporting the calf support frame, and the part of the second support mechanism in contact with the ground is made of rubber material, which improves the friction between the second support mechanism and the ground, reduces the probability of the second support mechanism sliding when sitting, and improves the safety of the portable chair.

[0017] 4. The seat cushion of the utility model can adjust the width of the seat cushion by adjusting the nut, and the seat cushion is divided into a first seat cushion and a second seat cushion. The widths of the first seat cushion and the second seat cushion are adjusted by adjusting the nut respectively, and sponge is filled in the first seat cushion and the second seat cushion to improve the comfort when sitting.

[0018] The present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the first supporting mechanism of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the thigh support frame of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the calf support frame and the second support mechanism of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the seat cushion of the utility model.

[0024] Description of reference numerals:

[0025] 1—first supporting mechanism; 1-1—rotating member; 1-2—connecting member;

[0026] 1-3—first control arm; 1-4—second control arm; 1-5—rotating shaft;

[0027] 1-6—One-way tooth; 1-7—Rotation connection shaft; 1-8—Rotation connection hole;

[0028] 2—first threaded hole; 3—seat cushion; 3-1—first seat cushion;

[0029] 3-2—Second seat cushion; 3-3 Fixing pin; 3-4—Adjusting bolt;

[0030] 3-5—adjusting nut; 4—second supporting mechanism; 4-1—first supporting plate;

[0031] 4-2—second supporting plate; 4-3—third supporting plate; 4-4—vertical connecting plate;

[0032] 5—thigh support frame; 5-1—thigh support frame body;

[0033] 5-2—support plate; 5-3—first through hole; 5-4—weight reduction hole;

[0034] 5-5—elastic component; 6—calf support frame; 7—anti-slip pad;

[0035] 8—pull rod mechanism; 8-1—telescopic control member; 8-2—telescopic control rod;

[0036] 8-3—first spring; 8-4—second spring; 8-5—lock pin;

[0037] 8-6—pull rod mechanism body; 8-7—boosting member; 8-8—extrusion member;

[0038] 8-9—fixing parts; 9—pressing space. DETAILED DESCRIPTION

[0039] like Figure 1 , Figure 2As shown, the utility model includes a seat cushion 3 and a support device, the number of the support devices is two, and the two support devices are symmetrically arranged on the left and right sides of the seat cushion 3, each support device includes a thigh support frame 5, a first support mechanism 1, a calf support frame 6 and a second support mechanism 4, the upper and lower ends of the first support mechanism 1 are respectively connected to the thigh support frame 5 and the calf support frame 6, and the end of the calf support frame 6 away from the first support mechanism 1 is rotatably connected to the second support mechanism 4; the first support mechanism 1 includes a rotating member 1-1, a connecting member 1-2, a first control arm 1-3 and a second control arm 1-4, the top of the connecting member 1-2 is fixedly connected to the thigh support frame 5, and the rotating member 1-1 is The bottom is fixedly connected to the calf support frame 6, the rotating member 1-1 is rotatably connected to the connecting member 1-2, the rotating member 1-1 includes a rotating shaft 1-5 and a one-way tooth 1-6, the one-way tooth 1-6 is arranged along the outer edge of the rotating shaft 1-5, the first control arm 1-3 is connected to the second control arm 1-4, and there is an angle between the first control arm 1-3 and the second control arm 1-4, when the first control arm 1-3 contacts the thigh support frame 5 downward, the second control arm 1-4 and the one-way tooth 1-6 are released from the abutment and the rotating shaft 1-5 can rotate freely, when the first control arm 1-3 is spaced apart from the thigh support frame 5, the second control arm 1-4 abuts against the one-way tooth 1-6 to limit the rotation of the rotating shaft 1-5.

[0040] When sitting, rotate the first support mechanism 1, and the first support mechanism 1 drives the calf support frame 6 to rotate synchronously. The first support mechanism 1 adjusts the angle between the calf support frame 6 and the thigh support frame 5, and the calf support frame 6 and the ground, so that a stable structure is formed between the calf support frame 6 and the thigh support frame 5, and the calf support frame 6 and the ground. Then adjust the angle between the second support mechanism 4 and the calf support frame 6, which improves the safety and stability of the portable chair when sitting. At the same time, the first support mechanism 1 also improves the static support strength of the connection between the thigh support frame 5 and the calf support frame 6; after sitting, the unidirectional locking characteristic of the first support mechanism 1 can be used to quickly fold the calf support frame 6 upward and fix it along the first support mechanism 1, which improves the convenience and safety of the portable chair under mobile conditions and avoids the problem that the calf support frame 6 is not folded up in time, resulting in the user's calf being unable to bend.

[0041] In a possible embodiment, there are two rotating parts 1-1 and one connecting part 1-2. The bottoms of the two rotating parts 1-1 are fixedly connected to the left and right sides of the top of the calf support frame 6 respectively. The connecting part 1-2 is located between the two rotating parts 1-1. The number of second control arms 1-4 is the same as the number of rotating parts 1-1. The two second control arms 1-4 are respectively located on the left and right sides of the first control arm 1-3, and the left and right sides of the end of the first control arm 1-3 are fixedly connected to the second control arm 1-4 respectively. The end of each second control arm 1-4 away from the first control arm 1-3 is abutted against the one-way tooth 1-6. The rotation of the rotating shaft 1-5 is limited by the second control arm 1-4. At this time, there is a distance between the first control arm 1-3 and the thigh support frame 5. Press the first control arm 1-3 to rotate in the direction close to the thigh support frame 5. Since the second control arm 1-4 is fixedly connected to the first control arm 1-3, the first control arm 1-3 drives the second control arm 1-4 to rotate in the direction of the thigh support frame 5. At this time, the second control arm 1-4 is released from the abutment with the one-way tooth 1-6. Since the bottom of the rotating shaft 1-5 is fixedly connected to the top of the calf support frame 6, the rotating shaft 1-5 can drive the calf support frame 6 to rotate forward or backward along the central axis of the rotating shaft 1-5 to adjust the angle between the calf support frame 6 and the thigh support frame 5 or the calf support frame 6 and the ground. After the position adjustment of the calf support frame 6 is completed, the pressure on the first control arm 1-3 is released, and the second control arm 1-4 rotates in the direction of the rotating member 1-1 until the second control arm 1-4 is in contact with the one-way tooth 1-6. At this time, the rotating shaft 1-5 can only drive the calf support frame 6 to rotate unidirectionally along the axial direction of the rotating shaft 1-5. According to the gear direction of the one-way tooth 1-6, the rotating shaft 1-5 can only rotate unidirectionally backward or forward. If the rotating shaft 1-5 can only rotate backward, the calf support frame 6 can be folded upward to make the calf support frame 6 retracted. Due to the one-way rotation characteristics of the rotating shaft 1-5, the calf support frame 6 can be stuck in the retracted state, which improves the convenience and safety of the portable seat.

[0042] In another possible embodiment, different from the above embodiment, the number of the rotating member 1-1 and the connecting member 1-2 are both one, the rotating member 1-1 is located on one side of the connecting member 1-2, and the bottom of the rotating member 1-1 is fixedly connected to the top of the calf support frame 6.

[0043] The present application does not limit the number and shape of the connecting members 1-2 and the rotating members 1-1. The number of the connecting members 1-2 and the rotating members 1-1 can be the same or different, and the shapes of the connecting members 1-2 and the rotating members 1-1 can be circular or elliptical.

[0044] like Figure 1 , Figure 4As shown, the first supporting mechanism 1 also includes a rotating connecting shaft 1-7, which passes through the rotating shaft 1-5 and the connecting member 1-2 so that the rotating shaft 1-5 rotates around the rotating connecting shaft 1-7.

[0045] A rotating connecting hole 1-8 is provided in the middle of the rotating shaft 1-5 and the connecting member 1-2. The inner diameter of the rotating connecting hole 1-8 matches the outer diameter of the rotating connecting shaft 1-7. After the rotating connecting shaft 1-7 passes through the rotating connecting hole 1-8 of the rotating shaft 1-5 and the rotating connecting hole 1-8 of the rotating member 1-2 respectively, the rotating shaft 1-5 is rotationally connected with the connecting member 1-2, and the rotating shaft 1-5 can rotate along the rotating connecting shaft 1-7.

[0046] The left and right ends of the rotating connecting shaft 1-7 are both provided with caps (not shown in the figure), which limit the rotating shaft 1-5 and the rotating member 1-2 from sliding out of the rotating connecting shaft 1-7, so that the relative positions of the rotating shaft 1-5 and the rotating member 1-2 are fixed.

[0047] like Figure 1 , Figure 3 As shown, the thigh support frame 5 includes a thigh support frame body 5-1 and a pull rod mechanism 8, the pull rod mechanism 8 is telescopically installed in the thigh support frame body 5-1, the pull rod mechanism 8 includes a pull rod mechanism body 8-6, a telescopic control member 8-1, a telescopic control rod 8-2, a first spring 8-3, a second spring 8-4, a locking pin 8-5, a booster 8-7 and a pressing space 9, the pressing space 9 is located near the top of the pull rod mechanism body 8-6, the telescopic control rod 8-2 is arranged in the pull rod mechanism body 8-6, the number of first springs 8-3 is multiple, and multiple first springs 8-3 are arranged in the pull rod mechanism body 8-6 at intervals, and each first spring The top of 8-3 is fixedly connected to the bottom of the telescopic control member 8-1, and the bottom of the telescopic control member 8-1 is also connected to the top of the telescopic control rod 8-2. The top of the telescopic control member 8-1 penetrates upward into the pressing space 9 and pushes the telescopic control member 8-1 downward to move the telescopic control rod 8-2 downward. The second spring 8-4 is arranged on the bottom side wall of the pull rod mechanism body 8-6, and the end of the second spring 8-4 away from the side wall is connected to the locking pin 8-5. The booster 8-7 is arranged between the second spring 8-4 and the locking pin 8-5. The bottom of the telescopic control rod 8-2 is slidably connected to the booster 8-7 to facilitate the booster 8-7 to squeeze the second spring 8-4.

[0048] A thigh support frame body 5-1 and a pull rod mechanism 8 are provided in the thigh support frame 5. The length of the pull rod mechanism 8 in the thigh support frame body 5-1 is adjusted so that the portable chair can adapt to users of different heights, thereby improving the comfort and applicability of the portable chair.

[0049] The pull rod mechanism body 8-6 is an internal hollow structure, and the telescopic control part 8-1, the telescopic control rod 8-2, the first spring 8-3, the second spring 8-4 and the booster 8-7 are all located in the hollow structure of the pull rod mechanism body 8-6. The pull rod mechanism body 8-6 includes an embedded part and a handle part, and the handle part is located at the top of the embedded part. By adjusting the length of the embedded part of the pull rod mechanism body 8-6 embedded in the thigh support frame body 5-1, the length of the thigh support frame 5 can be adjusted. The handle part of the pull rod mechanism body 8-6 is located outside the thigh support frame body 5-1, and the pressing space 9 is located at the handle part of the pull rod mechanism body 8-6 near the embedded part.

[0050] The top of each first spring 8-3 is fixedly connected to the bottom of the telescopic control member 8-1, and the bottom of each first spring 8-3 is fixedly connected to the top inner wall of the embedded part of the pull rod mechanism body 8-6, so that each first spring 8-3 is vertically arranged, and the telescopic control member 8-1 is pressed downward in the pressing space 9, and the telescopic control member 8-1 drives the telescopic control rod 8-2 to overcome the elastic force of the first spring 8-3 and move downward, and the lower part of the telescopic control rod 8-2 pushes the booster 8-7 to move in the direction of the second spring 8-4, and the second spring 8-4 is continuously compressed under the action of the booster 8-7, driving the locking pin 8-5 to move to the second spring 8-4. The spring 8-4 moves in the direction of the locking pin 8-5 to disengage from the thigh support frame body 5-1. At this time, the pull rod mechanism body 8-6 can move up and down in the thigh support frame body 5-1 to adjust the length of the thigh support frame 5; after the length adjustment of the thigh support frame 5 is completed, the pressure on the telescopic control member 8-1 is released in the pressing space 9, and the telescopic control rod 8-2 moves upward under the elastic force of the first spring 8-3. At the same time, the booster member 8-7 releases the pressure on the second spring 8-2, and the second spring 8-2 is reset. The locking pin 8-5 locks the pull rod mechanism body 8-6 on the thigh support frame body 5-1.

[0051] A squeezing rod (not shown) is provided on one side of the lower part of the telescopic control rod 8-2 close to the booster 8-7. The extension direction of the squeezing rod is perpendicular to the extension direction of the telescopic control rod 8-2. When the telescopic control rod 8-2 moves downward, the squeezing rod contacts the booster 8-7.

[0052] like Figure 3 As shown, the booster 8-7 includes a fixing member 8-9 and an extrusion member 8-8. The side of the extrusion member 8-8 close to the locking pin 8-5 is an inclined surface extending toward the bottom. The extrusion member 8-8 is slidably connected to the fixing member 8-9. The extrusion member 8-8 and the second spring 8-4 are located at the same height.

[0053] A slideway (not shown in the figure) is arranged on the fixing member 8-9 in the horizontal direction, and the extrusion member 8-8 can slide left and right along the slideway. The extrusion member 8-8 is a structure with a small top and a large bottom, and the side of the extrusion member 8-8 close to the locking pin 8-5 is an inclined surface. When the telescopic control rod 8-2 moves downward, the extrusion rod at the lower part of the telescopic control rod 8-2 contacts the inclined surface of the extrusion member 8-8, and the extrusion rod pushes the extrusion member 8-8 to move along the slideway toward the second spring 8-4. The second spring 8-4 is continuously compressed under the extrusion of the extrusion member 8-8 until the second spring 8-4 drives the locking pin 8-5 to detach from the thigh support frame body 5-1, and the pull rod mechanism body 8-6 can move up and down in the thigh support frame body 5-1.

[0054] like Figure 1 , Figure 3 As shown, the thigh support frame body 5-1 includes a support plate 5-2, a first through hole 5-3 and a weight-reducing hole 5-4. There are two support plates 5-2, and both support plates 5-2 are installed on the thigh support frame body 5-1 near the connecting piece 1-2. The installation direction of the two support plates 5-2 is perpendicular to the extension direction of the thigh support frame body 5-1. An elastic component 5-5 is installed between the two support plates 5-2, and the first control arm 1-3 and the second control arm 1-4 are installed on the elastic component 5-5. There are multiple first through holes 5-3, and the multiple first through holes 5-3 are arranged at intervals along the extension direction of the thigh support frame body 5-1. The inner diameter of each first through hole 5-3 matches the outer diameter of the locking pin 8-5. There are multiple weight-reducing holes 5-4, and the multiple weight-reducing holes 5-4 are arranged on the thigh support frame body 5-1 to reduce the weight of the thigh support frame body 5-1.

[0055] Both support plates 5-2 are provided with through holes (not shown in the figure), and the elastic component 5-5 is a torsion spring. The left and right ends of the torsion spring are respectively arranged in the through holes of the two support plates 5-2, and the first control arm 1-3 and the second control arm 1-4 are installed on the torsion spring, and the first control arm 1-3 and the second control arm 1-4 are installed on the two support plates 5-2 through the torsion spring. Under the action of the torsion spring, the first control arm 1-3 can drive the second control arm 1-4 to rotate in the direction close to the rotating member 1-1 or away from the rotating member 1-1, so that the second control arm 1-4 can lock or unlock the rotating member 1-1.

[0056] The first through hole 5-3 is set on the side wall of the thigh support frame body 5-1 near the top. After the locking pin 8-5 is inserted into the first through hole 5-3, the position of the pull rod mechanism body 8-6 and the thigh support frame body 5-1 is fixed. If it is necessary to adjust the length of the thigh support frame 5, press the telescopic control member 8-1 downward, and the telescopic control member 8-1 drives the telescopic control rod 8-2 to overcome the elastic force of the first spring 8-3 and move downward. The extrusion rod at the lower part of the telescopic control rod 8-2 pushes the extrusion member 8-8 to slide along the slide on the fixing member 8-9 toward the second spring 8-4, so that the extrusion member 8-8 squeezes the second spring 8-4. The second spring 8-4 is continuously compressed while driving the locking pin 8-5 to the second spring 8-4. The locking pin 8-5 is moved in the direction of the first through hole 5-3 to realize the disengagement of the locking pin 8-5 from the first through hole 5-3. Then the pull rod mechanism body 8-6 can be adjusted upward or downward along the extension direction of the thigh support frame body 5-1. After the adjustment is completed, the telescopic control member 8-1 is released, and the telescopic control rod 8-2 moves upward under the elastic force of the first spring 8-3. The extrusion rod at the lower part of the telescopic control rod 8-2 releases the extrusion of the extrusion member 8-8, and the extrusion member 8-8 slides along the slide to the initial position. The second spring 8-4 is reset and pushes the locking pin 8-5 to move in the direction close to the first through hole 5-3, so that the locking pin 8-5 is locked into the first through hole 5-3, and the pull rod mechanism body 8-6 is locked with the thigh support frame body 5-1 again. The length of the thigh support frame 5 is adjusted by the thigh support frame body 5-1 and the pull rod mechanism body 8-6, which improves the comfort and applicability of the portable chair.

[0057] The weight-reducing holes 5-4 are arranged on the thigh support frame body 5-1, so as to reduce the weight of the thigh support frame body 5-1 and facilitate carrying.

[0058] like Figure 1 , Figure 4 As shown, the second supporting mechanism 4 includes a first supporting plate 4-1, a second supporting plate 4-2, a third supporting plate 4-3 and a vertical connecting plate 4-4, the two side ends of the third supporting plate 4-3 along the length direction are respectively connected to the first supporting plate 4-1 and the second supporting plate 4-2, the ends of the first supporting plate 4-1 and the second supporting plate 4-2 away from the third supporting plate 4-3 are respectively connected to the two sides of the vertical connecting plate 4-4, the bottom of the vertical connecting plate 4-4 is connected to the top of the third supporting plate 4-3, the top of the vertical supporting plate 4-4 is rotatably connected to the calf supporting frame 6, and the bottom surface of the third supporting plate 4-3 is provided with an anti-slip pad 7.

[0059] In a possible embodiment, a first threaded hole 2 is provided at the top of the vertical support plate 4-4, and a second threaded hole (not shown in the figure) is provided at the bottom of the calf support frame 6. The bolt passes through the first threaded hole 2 and the second threaded hole of the calf support frame 6, so that the vertical support plate 4-4 is threadedly connected to the calf support frame 6. The angle between the second support mechanism 4 and the calf support frame 6 can be adjusted by adjusting the angle between the vertical support plate 4-4 and the calf support frame 6, so as to improve the stability of the second support mechanism 4 supporting the calf support frame 6.

[0060] In another possible embodiment, the top of the vertical support plate 4-4 has an arc, and snap-on buckles (not shown in the figure) are provided on both sides of the top of the vertical support plate 4-4. The left and right sides of the end of the calf support frame 6 away from the rotating member 1-1 extend outward along the length direction of the calf support frame 6 to form a first connecting plate and a second connecting plate (not shown in the figure), and the inner walls of the first connecting plate and the second connecting plate are spaced apart and provided with a plurality of snap-on holes (not shown in the figure). The snap-on buckles on the left and right sides of the vertical support plate 4-4 are respectively snap-on to the first connecting plate and the second connecting plate. In the snap-in holes on the inner walls of the second connecting plates, when the angle between the second support frame 4 and the calf support frame 6 needs to be adjusted, the vertical support plate 4-4 is rotated forward or backward, and the snap-in buckles on both sides of the vertical support plate 4-4 are snap-into the next snap-in hole of the calf support frame 6 forward or backward. When the vertical support plate 4-4 is rotated to a suitable angle, the rotation of the vertical support plate 4-4 is stopped, and the snap-in buckles of the vertical support plate 4-4 are snap-into the corresponding snap-in holes of the calf support frame 6, and the angle adjustment of the second support mechanism 4 and the calf support frame 6 is completed. The second support mechanism 4 and the calf support frame 6 can also be connected in other rotatable ways.

[0061] The first support plate 4-1, the second support plate 4-2 and the third support plate 4-3 are connected to form a triangular structure. According to the stability of the triangle, the second support mechanism 4 formed by the first support plate 4-1, the second support plate 4-2, the third support plate 4-3 and the vertical connecting plate 4-4 has high stability.

[0062] The bottom of the third support plate 4-3 is horizontal and in contact with the ground. The stability of the second support mechanism 4 is improved by increasing the contact area between the third support plate 4-3 and the ground. An anti-slip pad 7 is provided on the bottom surface of the third support plate 4-3 to increase the friction between the second support mechanism 4 and the ground, thereby preventing the third support plate 4-3 from sliding when sitting and causing accidental casualties.

[0063] like Figure 1 , Figure 4 As shown, the bottom of the calf support frame 6 is rotatably connected to the vertical support plate 4-4, and the top of the calf support frame 6 is fixedly connected to the rotating member 1-1.

[0064] like Figure 1 , Figure 5 As shown, the seat cushion 3 includes a first seat cushion 3-1, a second seat cushion 3-2, a fixing pin 3-3, an adjusting bolt 3-4 and an adjusting nut 3-5. The fixing pin 3-3 is connected to the thigh support frame 5. The first seat cushion 3-1 and the second seat cushion 3-2 are connected by the adjusting bolt 3-4. The ends of the first seat cushion 3-1 and the second seat cushion 3-2 that are away from each other are connected to the fixing pin 3-3 by the adjusting bolt 3-4. The adjusting nut 3-5 is provided on the adjusting bolt 3-4. The adjusting nut 3-5 can be spirally moved along the extension direction of the adjusting bolt 3-4 to adjust the size of the first seat cushion 3-1 and the second seat cushion 3-2.

[0065] The first seat cushion 3-1 and the second seat cushion 3-2 are of the same size and are located at the same height. There are two fixing pins 3-3, each of which is connected to the pull rod mechanism body 8-6 of the thigh support frame 5. An adjusting bolt 3-4 is provided in the threaded hole of each fixing pin 3-3. The adjusting bolt 3-4 passes through the threaded hole of the fixing pin 3-3 and is threadedly connected to the front part of the first seat cushion 3-1 or the front part of the second seat cushion 3-2. An adjusting nut 3-5 is threadedly connected to each adjusting bolt 3-4. The first seat cushion 3-1 and the second seat cushion 3-2 are connected at a close position by the adjusting bolt 3-4. The size of the first seat cushion 3-1 and the second seat cushion 3-2 can be adjusted by moving the adjusting nut 3-5 on the adjusting bolt 3-4.

[0066] Both thigh support frames 5 are provided with straps for binding and fixing the thighs.

[0067] Secure the portable seat to your lap with a strap so you can sit down whenever you need to.

[0068] The thigh support frame 5 and the calf support frame 6 are both made of aluminum alloy, and the seat cushion 3 is made of plastic and is filled with sponge.

[0069] The aluminum alloy material is lighter, which reduces the weight of the portable seat. The aluminum alloy can be further topologically optimized to improve the supporting strength of the portable seat. The seat cushion 3 is filled with sponge to improve the sitting experience.

[0070] When in use, the height of the thigh support frame 5 is adjusted according to the height of the user. When adjusting the height of the thigh support frame 5, the telescopic control member 8-1 is pressed downward, and the telescopic control member 8-1 drives the telescopic control rod 8-2 to move downward to overcome the elastic force of the first spring 8-3. The lower part of the telescopic control rod 8-2 pushes the extrusion member 8-8 to compress the second spring 8-4, and the second spring 8-4 drives the locking pin 8-5 to disengage from the first through hole 5-3, so that the pull rod mechanism body 8-6 can move up and down along the extension direction of the thigh support frame body 5-1. After the pull rod mechanism body 8-6 is moved to a suitable position, the telescopic control member 8-1 is released, and the telescopic control rod 8-2 is under the elastic force of the first spring 8-3. By moving downward and upward, the telescopic control rod 8-2 releases the squeezing of the squeezing member 8-8, the second spring 8-4 is reset, and the locking pin 8-5 is pushed into the first through hole 5-3, and the height adjustment of the thigh support frame 5 is completed; when sitting, it is necessary to adjust the angles of the thigh support frame 5 and the calf support frame 6 through the first support mechanism 1, and press the first control arm 1-3 to rotate in the direction of the thigh support frame 5, so that the second control arm 1-4 and the one-way tooth 1-6 are released from contact, and the rotating shaft 1-5 can rotate forward or backward along the rotating connecting shaft 1-7. Since the bottom of the rotating shaft 1-5 is fixedly connected to the calf support frame 6, the rotating shaft 1-5 rotates along the rotating connecting shaft 1-7 That is, the calf support frame 6 rotates along the rotating connecting shaft 1-7, so that the calf support frame 6 rotates to a suitable angle along the rotating connecting shaft 1-7, and the pressing of the first control arm 1-3 is released. Under the action of the elastic component 5-5, the second control arm 1-4 rotates toward the one-way tooth 1-6, so that the second control arm 1-4 abuts against the one-way tooth 1-6. At this time, the movement direction of the calf support frame 6 is restricted, and the angle adjustment of the calf support frame 6 and the thigh support frame 5 is completed. Under the restriction of the second control arm 1-4, the calf support frame 6 can only rotate backward along the rotating connecting shaft 1-7. After sitting, the calf support frame 6 needs to be folded. At this time, the calf support frame can be directly rotated upward. The calf support frame 6 is connected to the thigh support frame 5 by the first support mechanism 1, so that the calf support frame 6 is in contact with the thigh support frame 5, and the calf support frame 6 is retracted. Since the second control arm 1-4 is in contact with the one-way tooth 1-6, the rotating shaft 1-5 can only rotate in one direction, and the calf support frame 6 cannot rotate forward along the rotating connection shaft 1-7, which improves the convenience and safety of the portable seat under mobile conditions and avoids the calf support frame 6 from rotating downward during movement to affect the user's calf bending; and after the calf support frame 6 and the thigh support frame 5 are adjusted by the first support mechanism 1, the angle between the second support mechanism 4 and the calf support frame 6 can also be adjusted to expand the support range and improve the stability when sitting.

[0071] The above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural transformation made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A wearable portable chair, characterized in that: It comprises a seat cushion (3) and a support device, wherein the number of the support devices is two, and the two support devices are symmetrically arranged on the left and right sides of the seat cushion (3), and each of the support devices comprises a thigh support frame (5), a first support mechanism (1), a calf support frame (6) and a second support mechanism (4), wherein the upper and lower ends of the first support mechanism (1) are respectively connected to the thigh support frame (5) and the calf support frame (6), and the end of the calf support frame (6) away from the first support mechanism (1) is rotatably connected to the second support mechanism (4); The first support mechanism (1) comprises a rotating member (1-1), a connecting member (1-2), a first control arm (1-3) and a second control arm (1-4); the top of the connecting member (1-2) is fixedly connected to the thigh support frame (5); the bottom of the rotating member (1-1) is fixedly connected to the calf support frame (6); the rotating member (1-1) is rotatably connected to the connecting member (1-2); the rotating member (1-1) comprises a rotating shaft (1-5) and a one-way tooth (1-6); the one-way tooth (1-6) is arranged along the outer edge of the rotating shaft (1-5). The first control arm (1-3) is connected to the second control arm (1-4), and there is an angle between the first control arm (1-3) and the second control arm (1-4). When the first control arm (1-3) contacts the thigh support frame (5) downward, the second control arm (1-4) and the one-way tooth (1-6) are released from abutment, and the rotation shaft (1-5) can rotate freely. When the first control arm (1-3) and the thigh support frame (5) are spaced apart, the second control arm (1-4) and the one-way tooth (1-6) are abutted to limit the rotation of the rotation shaft (1-5).

2. A wearable portable chair according to claim 1, characterized in that: The first supporting mechanism (1) further comprises a rotating connecting shaft (1-7), wherein the rotating connecting shaft (1-7) passes through the rotating shaft (1-5) and the connecting member (1-2) so that the rotating shaft (1-5) rotates around the rotating connecting shaft (1-7).

3. A wearable portable chair according to claim 1, characterized in that: The thigh support frame (5) comprises a thigh support frame body (5-1) and a pull rod mechanism (8), wherein the pull rod mechanism (8) is telescopically installed in the thigh support frame body (5-1), and the pull rod mechanism (8) comprises a pull rod mechanism body (8-6), a telescopic control member (8-1), a telescopic control rod (8-2), a first spring (8-3), a second spring (8-4), a locking pin (8-5), a booster member (8-7) and a pressing space (9), wherein the pressing space (9) is located near the top of the pull rod mechanism body (8-6), and the telescopic control rod (8-2) is arranged in the pull rod mechanism body (8-6), and the number of the first springs (8-3) is multiple, and the multiple first springs (8-3) are arranged in the pull rod mechanism body (8-6) at intervals, and each of the first springs (8-3) is arranged in the pull rod mechanism body (8-6). The top of the spring (8-3) is fixedly connected to the bottom of the telescopic control member (8-1), and the bottom of the telescopic control member (8-1) is also connected to the top of the telescopic control rod (8-2). The top of the telescopic control member (8-1) penetrates upward into the pressing space (9) and pushes the telescopic control member (8-1) downward to move the telescopic control rod (8-2) downward. The second spring (8-4) is arranged on the bottom side wall of the pull rod mechanism body (8-6), and the end of the second spring (8-4) away from the side wall is connected to the locking pin (8-5). The booster (8-7) is arranged between the second spring (8-4) and the locking pin (8-5). The bottom of the telescopic control rod (8-2) is slidably connected to the booster (8-7) to facilitate the booster (8-7) to squeeze the second spring (8-4).

4. A wearable portable chair according to claim 3, characterized in that: The booster (8-7) comprises a fixing member (8-9) and an extrusion member (8-8); a side of the extrusion member (8-8) close to the locking pin (8-5) is an inclined surface extending toward the bottom; the extrusion member (8-8) is slidably connected to the fixing member (8-9); and the extrusion member (8-8) and the second spring (8-4) are located at the same height.

5. A wearable portable chair according to claim 3, characterized in that: The thigh support frame body (5-1) comprises a support plate (5-2), a first through hole (5-3) and a weight reduction hole (5-4); the number of the support plates (5-2) is two, and the two support plates (5-2) are both installed on the thigh support frame body (5-1) near the connecting piece (1-2); the installation direction of the two support plates (5-2) is perpendicular to the extension direction of the thigh support frame body (5-1); an elastic component (5-5) is installed between the two support plates (5-2); the first control arm (1- 3) and a second control arm (1-4) are installed on the elastic component (5-5), the number of the first through holes (5-3) is multiple, and the multiple first through holes (5-3) are arranged at intervals along the extension direction of the thigh support frame body (5-1), the inner diameter of each first through hole (5-3) matches the outer diameter of the locking pin (8-5), the number of the weight-reducing holes (5-4) is multiple, and the multiple weight-reducing holes (5-4) are arranged on the thigh support frame body (5-1) to reduce the weight of the thigh support frame body (5-1).

6. A wearable portable chair according to claim 1, characterized in that: The second supporting mechanism (4) comprises a first supporting plate (4-1), a second supporting plate (4-2), a third supporting plate (4-3) and a vertical connecting plate (4-4); the end portions of the third supporting plate (4-3) along the length direction are respectively connected to the first supporting plate (4-1) and the second supporting plate (4-2); the ends of the first supporting plate (4-1) and the second supporting plate (4-2) away from the third supporting plate (4-3) are respectively connected to the two sides of the vertical connecting plate (4-4); the bottom of the vertical connecting plate (4-4) is connected to the top of the third supporting plate (4-3); the top of the vertical connecting plate (4-4) is rotatably connected to the calf supporting frame (6); and the bottom surface of the third supporting plate (4-3) is provided with an anti-slip pad (7).

7. A wearable portable chair according to claim 1, characterized in that: The seat cushion (3) comprises a first seat cushion (3-1), a second seat cushion (3-2), a fixing pin (3-3), an adjusting bolt (3-4) and an adjusting nut (3-5); the fixing pin (3-3) is connected to a thigh support frame (5); the first seat cushion (3-1) and the second seat cushion (3-2) are connected via an adjusting bolt (3-4); the ends of the first seat cushion (3-1) and the second seat cushion (3-2) which are far from each other are connected to the fixing pin (3-3) via an adjusting bolt (3-4); an adjusting nut (3-5) is provided on the adjusting bolt (3-4); the adjusting nut (3-5) can be spirally moved along the extending direction of the adjusting bolt (3-4) to adjust the size of the first seat cushion (3-1) and the second seat cushion (3-2).

8. A wearable portable chair according to claim 1, characterized in that: Both thigh support frames (5) are provided with straps for binding and fixing the thighs.

9. A wearable portable chair according to any one of claims 1 to 8, characterized in that: The thigh support frame (5) and the calf support frame (6) are both made of aluminum alloy, and the seat cushion (3) is made of plastic and is filled with sponge.

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