Auxiliary chair

Abstract

Provided is an auxiliary chair, comprising a chair body (1000), at least one quick-release structure (2000a), and at least one positioning support structure (2000). The quick-release structure (2000a) is connected to the chair body (1000). The positioning support structure (2000) is connected to the quick-release structure (2000a) and comprises at least two connecting rods, two first joint modules, and a second joint module. The two first joint modules are separately connected to the two ends of a first one of the two connecting rods. The second joint module is connected to the end, distal to the first one, of a second one of the two connecting rods, thereby increasing the convenience of use.

Description

Auxiliary chair TECHNICAL FIELD

[0001] The present invention relates to an auxiliary chair, in particular, to an auxiliary chair with a position support structure. BACKGROUND

[0002] People with disabilities are limited by physical factors and must use auxiliary chairs such as wheelchairs. Auxiliary chairs generally include a backrest and armrests for users to lean against. However, for people who cannot maintain a sitting posture balance by themselves, such as people with scoliosis, a position support structure must be further provided on both sides of the backrest or the seat plate, which can be adjusted according to the body posture needs and achieve the effect of supporting the human body.

[0003] However, when the user wants to leave the auxiliary chair, these position support structures may block and cause inconvenience in use, so there is still room for improvement.

[0004] SUMMARY

[0005] To solve the above problems, the present invention provides an auxiliary chair, which can achieve convenience in use through its structural configuration.

[0006] According to one embodiment of the present invention, an auxiliary chair is provided, comprising:

[0007] a chair body;

[0008] at least one quick release structure connected to the chair body; and

[0009] at least one position support structure connected to the at least one quick release structure and comprising:

[0010] at least two connecting rods arranged in series;

[0011] two first joint modules respectively connected to two ends of a first one of the at least two connecting rods, each first joint module having a first rotation axis, and the first rotation axes of the two first joint modules being parallel to each other; and

[0012] a second joint module connected to an end of a second one of the at least two connecting rods away from the first one and having a second rotation axis, the second rotation axis being orthogonal to each first rotation axis;

[0013] wherein when adjusting the at least one position support structure, each first joint module is switched from a limiting state to an adjusting state to allow the first one of the at least two connecting rods to rotate; and the at least one quick release structure is operated to allow the at least one position support structure to rotate as a whole relative to the chair body or to be detached from the chair body. According to the auxiliary chair of the foregoing embodiment, the at least one quick release structure comprises:

[0014] a first fixed seat connected to the chair body and comprising two convex arms spaced apart from each other;

[0015] a pivot hole penetrating one of the two convex arms along a first penetrating direction, the first penetrating direction being parallel to each of the first rotation axes;

[0016] a limiting pin hole penetrating the other of the two convex arms along the first penetrating direction;

[0017] a positioning pin inserted into the at least one positioning support structure and arranged in the first fixed seat, the positioning pin comprising a pressure receiving end and a limiting end, the pressure receiving end being arranged in the pivot hole, the limiting end corresponding to the limiting pin hole, and the limiting end being shaped to match the shape of the limiting pin hole; and

[0018] a first elastic member sleeved on the pressure receiving end;

[0019] wherein, after the pressure receiving end is pressed by an external force, the limiting end is pushed out of the at least one positioning support structure and the first elastic member is energized, allowing the at least one positioning support structure to rotate relative to the first fixed seat, when the external force is removed, the first elastic member resets the pressure receiving end, and the limiting end returns to the at least one positioning support structure to limit the rotation of the at least one positioning support structure.

[0020] According to the auxiliary chair of the foregoing embodiment, the at least one positioning support structure further comprises:

[0021] a setting rod connected to one of the two first joint modules;

[0022] wherein, the positioning pin of the at least one quick release structure is inserted into the setting rod. According to the auxiliary chair of the foregoing embodiment, the at least one quick release structure comprises:

[0023] a second fixed seat connected to the chair body;

[0024] a slot penetrating the second fixed seat along a second penetrating direction, the second penetrating direction being parallel to the second rotation axis;

[0025] a positioning groove arranged in the second fixed seat and communicating with the slot, a positioning axis of the positioning groove being orthogonal to the second penetrating direction;

[0026] a second elastic member arranged in the positioning groove; and

[0027] a top bead pushed against by the second elastic member to abut against the at least one positioning support structure.

[0028] According to the auxiliary chair of the foregoing embodiment, the number of the at least two connecting rods is greater than or equal to three, the second one, the first one and the third one of the plurality of connecting rods are arranged in sequence, and the at least one positioning support structure further comprises:

[0029] a third joint module connected to the third one of the plurality of links; and

[0030] a setting rod connected to the third joint module and inserted into the slot, the setting rod comprising a locating recess corresponding to the top bead of the at least one quick release structure.

[0031] According to another embodiment of the present application, an assist chair is provided, comprising:

[0032] a chair body;

[0033] at least one quick release structure connected to the chair body;

[0034] at least one position support structure connected to the at least one quick release structure and comprising:

[0035] at least two links arranged in series and having a series direction;

[0036] two first joint modules respectively connected to two ends of a first one of the at least two links in the series direction, each of the first joint modules having a first rotation axis, the first rotation axes of the two first joint modules being parallel to each other, each of the first joint modules comprising two first face gears engaged with each other; and

[0037] a second joint module connected to one end of a second one of the at least two links and having a second rotation axis, the second rotation axis being orthogonal to each of the first rotation axes and parallel to the series direction;

[0038] wherein when the at least one position support structure is adjusted, each of the first joint modules is switched from a limiting state to an adjusting state, allowing the first one of the at least two links to rotate; and the at least one quick release structure is operated, allowing the at least one position support structure to rotate as a whole relative to the chair body or to be detached from the chair body. According to the assist chair of the foregoing embodiment, the at least one quick release structure comprises:

[0039] a first fixing seat connected to the chair body and comprising two protruding arms spaced apart from each other;

[0040] a pivot hole penetrating one of the two protruding arms in a first penetrating direction, the first penetrating direction being parallel to the first rotation axis;

[0041] a limiting pin hole penetrating the other of the two protruding arms in the first penetrating direction;

[0042] a locating pin inserted into the at least one position support structure and assembled in the first fixing seat, the locating pin comprising a pressure receiving end and a limiting end, the pressure receiving end being accommodated in the pivot hole, the limiting end corresponding to the limiting pin hole, and the limiting end being shaped to match the shape of the limiting pin hole; and

[0043] a first elastic member sleeved on the pressure receiving end;

[0044] wherein the pressure receiving end is pushed by an external force to push the limiting end to disengage from the at least one swing support structure and to store the force of the first elastic member, allowing the at least one swing support structure to rotate relative to the first fixed seat, and when the external force is removed, the first elastic member resets the pressure receiving end, and the limiting end returns to the at least one swing support structure to limit the rotation of the at least one swing support structure. According to the auxiliary chair of the foregoing embodiment, the at least one swing support structure further comprises:

[0045] a setting rod connected to one of the two first joint modules;

[0046] wherein the positioning pin of the at least one quick release structure is inserted into the setting rod. According to the auxiliary chair of the foregoing embodiment, the at least one quick release structure comprises:

[0047] a second fixed seat connected to the chair body;

[0048] a slot penetrating the second fixed seat along a second penetrating direction, the second penetrating direction being parallel to the second rotation axis;

[0049] a positioning groove provided in the second fixed seat and communicating with the slot, a positioning axis of the positioning groove being orthogonal to the second penetrating direction;

[0050] a second elastic member accommodated in the positioning groove; and

[0051] a top bead pushed against by the second elastic member to abut against the at least one swing support structure. According to the auxiliary chair of the foregoing embodiment, the number of the at least two connecting rods is greater than or equal to three, the second, the first, and the third of the plurality of connecting rods are sequentially arranged, and the at least one swing support structure further comprises:

[0052] a third joint module connected to the third of the plurality of connecting rods; and

[0053] a setting rod connected to the third joint module and inserted into the slot, the setting rod comprising a positioning recess corresponding to the top bead of the at least one quick release structure. BRIEF DESCRIPTION OF DRAWINGS

[0054] FIG. 1 shows a partial perspective view of an auxiliary chair according to the present application;

[0055] FIG. 2 shows a perspective view of a swing support structure and a quick release structure of the auxiliary chair of the embodiment of FIG. 1;

[0056] FIG. 3 shows an exploded view of the swing support structure and the quick release structure of the embodiment of FIG. 2;

[0057] Figure 4 shows a sectional view of the positioning support structure of the embodiment of Figure 2 along section line 4-4;

[0058] Figure 5 shows a sectional view of the positioning support structure and the quick release structure of the embodiment of Figure 2 along section line 5-5;

[0059] Figure 6 shows a perspective view of another positioning support structure and another quick release structure of the auxiliary chair of the embodiment of Figure 1 ;

[0060] Figure 7 shows an exploded view of the positioning support structure and the quick release structure of the embodiment of Figure 6;

[0061] Figure 8 shows a sectional view of the positioning support structure and the quick release structure of the embodiment of Figure 6 along section line 8-8;

[0062] Figure 9 shows a partial perspective view of the auxiliary chair of the embodiment of Figure 1 ;

[0063] Figure 10 shows a perspective view of yet another positioning support structure and yet another quick release structure of the auxiliary chair of the embodiment of Figure 1 ; and

[0064] Figure 11 shows another partial perspective view of the auxiliary chair of the embodiment of Figure 1.

[0065] Reference Signs:

[0066] 1000: chair body

[0067] 1100: chair back

[0068] 1200: armrest

[0069] 1300: seat plate

[0070] 2000, 3000, 4000, 5000, 6000: positioning support structure

[0071] 2000a, 3000a, 4000a, 5000a, 6000a: quick release structure

[0072] 2100a: first fixing seat

[0073] 2110, 2120, 3110, 3120, 3130, 4110, 4120, 5110, 5120, 5130, 5140, 5150, 6110, 6120, 6130: connecting rod

[0074] 2110a, 2120a: protruding arm

[0075] 2111, 2121: first fitting hole

[0076] 2130a: locking portion

[0077] 2200a: pivot hole

[0078] 2300, 2400, 3300, 3400, 4300, 4400, 5300, 5400, 6300, 6400: first joint module

[0079] 2300a: limiting pin hole

[0080] 2310, 2320, 2410, 2420: first face gear

[0081] 2311, 2321: first face tooth part

[0082] 2312, 2322: first fitting protrusion

[0083] 2330, 2430: first spring

[0084] 2340, 2440: first screw part

[0085] 2400a: positioning pin

[0086] 2410a: pressure receiving end

[0087] 2420a: limiting end

[0088] 2500, 3500, 4500, 5500, 6500: second joint module

[0089] 2500a: first elastic part

[0090] 2510, 2520: second face gear

[0091] 2530: second spring

[0092] 2540: second screw part

[0093] 2600, 3600, 4600, 5600, 6600: setting rod

[0094] 2600a: cap

[0095] 2700, 3700, 4700: support plate

[0096] 3100a: second fixing seat

[0097] 3200a: slot

[0098] 3300a: positioning groove

[0099] 3400a: top bead

[0100] 3500a: second elastic part

[0101] 3600a: stopper

[0102] 3610: positioning recess

[0103] 3900, 5900, 6900: third joint module

[0104] 3910, 3920: third face gear

[0105] 3930: third spring

[0106] 3940: third screw

[0107] 5200, 6200: fourth joint module

[0108] 5700: headrest

[0109] 5800, 6800: fifth joint module

[0110] 6140, 6150: adapter bar

[0111] 6700: footrest

[0112] X11, X12: first rotation axis

[0113] X2: second rotation axis DETAILED DESCRIPTION

[0114] Embodiments of the present application will be described hereinafter with reference to the drawings. Many practical details are described hereininafter for the sake of thoroughness and in order to provide a complete understanding of the application. However, it will be appreciated that the application is not limited in scope to the details of practice described hereininafter. That is, in some embodiments of the application, these details are not essential to the practice of the application. Furthermore, for the sake of simplicity, some well-known structures and components are not shown in the drawings so as not to obscure the relevant aspects of the embodiments of the application. Repetitive description of like elements employed in the embodiments of the application is omitted for sake of brevity.

[0115] In addition, the terms first, second, third, etc. are used herein only to describe different components or elements and do not connote any priority or order of use. Also, the terms "comprises", "comprising", "includes", "including", "has", "having", "contains", "containing", or variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises, includes, has, contains a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0116] Referring to FIG. 1, FIG. 2 and FIG. 3, FIG. 1 shows a partial perspective view of an assist chair according to the present application, FIG. 2 shows a perspective view of a position support structure 2000 and a quick release structure 2000a of the assist chair of the embodiment of FIG. 1, and FIG. 3 shows an exploded view of the position support structure 2000 and the quick release structure 2000a of the embodiment of FIG. 2. The assist chair (not shown) comprises a chair body 1000, at least one quick release structure 2000a, 3000a, 4000a, 5000a, 6000a, and at least one position support structure 2000, 3000, 4000, 5000, 6000. In this embodiment, eight position support structures 2000, 3000, 4000, 5000, 6000 and eight quick release structures 2000a, 3000a, 4000a, 5000a, 6000a can be included, wherein the number of position support structure 2000, position support structure 3000 and position support structure 4000 is two, and the number of position support structure 5000 and position support structure 6000 is one, but the present application is not limited thereto.

[0117] Eight quick release structures 2000a, 3000a, 4000a, 5000a, 6000a are connected to the chair body 1000. Eight swing support structures 2000, 3000, 4000, 5000, 6000 are connected to the eight quick release structures 2000a, 3000a, 4000a, 5000a, 6000a respectively, each swing support structure 2000, 3000, 4000, 5000, 6000 comprises at least two connecting rods 2110, 2120, 3110 (shown in Fig. 6), 3120 (shown in Fig. 6), 3130 (shown in Fig. 6), 4110 (shown in Fig. 9), 4120 (shown in Fig. 9), 5110 (shown in Fig. 10), 5120 (shown in Fig. 10), 5130 (shown in Fig. 10), 5140 (shown in Fig. 10), 5150 (shown in Fig. 10), 6110 (shown in Fig. 11), 6120 (shown in Fig. 11), 6130 (shown in Fig. 11), two first joint modules 2300, 2400, 3300 (shown in Fig. 6), 3400 (shown in Fig. 6), 4300 (shown in Fig. 9), 4400 (shown in Fig. 9), 5300 (shown in Fig. 10), 5400 (shown in Fig. 10), 6300 (shown in Fig. 11), 6400 (shown in Fig. 11), and a second joint module 2500, 3500 (shown in Fig. 6), 4500 (shown in Fig. 9), 5500 (shown in Fig. 10), 6500 (shown in Fig. 11). The aforementioned at least two connecting rods 2110, 2120, 3110, 3120, 3130, 4110, 4120, 5110, 5120, 5130, 5140, 5150, 6110, 6120, 6130 are arranged in series. The two first joint modules 2300, 2400, 3300, 3400, 4300, 4400, 5300, 5400, 6300, 6400 are connected to two ends of a first one of the aforementioned at least two connecting rods 2110, 2120, 3110, 3120, 3130, 4110, 4120, 5110, 5120, 5130, 5140, 5150, 6110, 6120, 6130 respectively, the first joint module 2300, 3300, 4300, 5300, 6300 has a first rotation axis X11, the first joint module 2400, 3400, 4400, 5400, 6400 has another first rotation axis X12, and the two first rotation axes X11, X12 are parallel to each other.The second joint module 2500, 3500, 4500, 5500, 6500 is connected to the second end of the second one of the at least two links 2110, 2120, 3110, 3120, 3130, 4110, 4120, 5110, 5120, 5130, 5140, 5150, 6110, 6120, 6130 away from the first one and has a second rotation axis X2 orthogonal to each first rotation axis X11, X12.

[0118] In the adjustment of the positioning support structure 2000, 3000, 4000, 5000, 6000, each first joint module 2300, 2400, 3300, 3400, 4300, 4400, 5300, 5400, 6300, 6400 is switched from the limiting state to the adjustment state, allowing the first one of the at least two links 2110, 2120, 3110, 3120, 3130, 4110, 4120, 5110, 5120, 5130, 5140, 5150, 6110, 6120, 6130 to rotate relative to the second one; and the quick release structure 2000a, 3000a, 4000a, 5000a, 6000a is operated to allow the positioning support structure 2000, 3000, 4000, 5000, 6000 to rotate as a whole relative to the chair body 1000 or to be detached from the chair body 1000.

[0119] In this way, by means of the quick release structure 2000a, 3000a, 4000a, 5000a, 6000a, the positioning support structure 2000, 3000, 4000, 5000, 6000 can be rotated as a whole relative to the chair body 1000 or be detached from the chair body 1000, so that the user can easily get off the auxiliary chair.

[0120] The auxiliary chair of the present application can have a wheelchair structure, and therefore can further include a base frame and at least three wheels, the chair body 1000 being arranged on the base frame, the number of wheels being, for example, four and arranged on the base frame. In order to simplify the drawings, the base frame and the wheels are omitted in the present application, but this does not limit the present application. In other embodiments, the auxiliary chair can also be a general chair and include chair legs, without being limited thereto.

[0121] The chair body 1000 can include a chair back 1100, an armrest 1200, and a seat plate 1300. The armrest 1200 is connected to the chair back 1100, and the seat plate 1300 is also connected to the chair back 1100.

[0122] Two positioning support structures 2000 can be respectively arranged at two sides of the chair back 1100, and the positions of the positioning support structures 2000 are higher than the armrests 1200. When the user sits on the seat plate 1300, the positioning support structures 2000 can support the sides of the upper body of the user, and can be adjusted to change the position, and the positioning support structures 2000 can be matched with quick release structures 2000a to achieve the effect of release or disengagement.

[0123] As shown in FIG. 2, the number of the connecting rods 2110, 2120 of the positioning support structure 2000 is two, at this time, the two connecting rods 2110, 2120 of the positioning support structure 2000 are not relatively pivoted, so that the connecting rod 2110 and the connecting rod 2120 are connected in a straight line. The connecting rod 2110 is in the shape of a rod, and the two connecting rods 2110, 2120 have a stringing direction, the stringing direction is orthogonal to the first rotation axes X11, X12, and the two first joint modules 2300, 2400 are respectively connected to two ends of the connecting rod 2110 (the first one of the connecting rods 2110, 2120) in the stringing direction.

[0124] Please refer to FIG. 4, and refer to FIGS. 1-3 together, wherein FIG. 4 shows a cross-sectional view of the positioning support structure 2000 along the cross-sectional line 4-4 of the embodiment of FIG. 2. As shown in FIGS. 3 and 4, each first joint module 2300, 2400 includes two first face gears 2310, 2320, 2410, 2420 that engage with each other, and the two first face gears 2310, 2320 of the first joint module 2300 are arranged on the connecting rod 2110 and the connecting rod 2120. Specifically, the first face gear 2310 includes a first face tooth part 2311 and three first embedding protrusions 2312, the first face tooth part 2311 faces the connecting rod 2120, the first embedding protrusions 2312 face the connecting rod 2110, and the connecting rod 2110 can include three first embedding holes 2111 at one end thereof, by embedding the first embedding protrusions 2312 and the first embedding holes 2111, the first face gear 2310 and the connecting rod 2110 can be rotationally limited. Similarly, the first face gear 2320 includes a first face tooth part 2321 and three first embedding protrusions 2322, and the connecting rod 2120 can include three first embedding holes 2121 at one end thereof, by embedding the first embedding protrusions 2322 and the first embedding holes 2121, the first face gear 2320 and the connecting rod 2120 can be rotationally limited.

[0125] The first joint module 2300 can further include a first spring 2330 and a first screw 2340. The link 2120 can further include a spring hole (not shown) and a screw hole (not shown) in communication with the spring hole. The first spring 2330 can be accommodated in the spring hole. The first screw 2340 can sequentially pass through a central hole of the first spring 2330, the screw hole, a gear hole of the first face gear 2320, and a gear hole of the first face gear 2310, and then be locked into the link 2110. In this way, when the first screw 2340 is locked, the first face gear 2320 and the first face gear 2310 can be stably engaged with each other, so that the link 2110 and the link 2120 cannot rotate relative to each other, and are in a limiting state. Conversely, when the first screw 2340 is loosened, a gap is generated between the first face gear 2310 and the first face gear 2320. At this time, the link 2110 and the link 2120 can be rotated to a desired angle, and then the first screw 2340 is locked.

[0126] The positioning support structure 2000 can further include a support plate 2700. The second joint module 2500 has a structure similar to that of the first joint module 2300, and thus includes two second face gears 2510 and 2520, a second spring 2530, and a second screw 2540. A first one of the links 2110 and 2120 is the link 2120. The second face gear 2510 is rotationally limited to the link 2120. The second face gear 2520 is rotationally limited to the support plate 2700. The second screw 2540 locks the link 2120 and the support plate 2700. Specifically, the two ends of the link 2120 are different in shape. One end is a round tube end (i.e., an end away from the link 2110), and the axis of the round tube end is parallel to the stringing direction of the link 2120. The other end is a plate-shaped end, which includes a flat surface facing the link 2110, and is used to be connected to the first face gear 2320. Therefore, the second rotation axis X2 of the second joint module 2500 can be orthogonal to the first rotation axes X11 and X12 and parallel to the stringing direction.

[0127] The positioning support structure 2000 can further include a setting rod 2600 connected to the first joint module 2400. The two ends of the setting rod 2600 are different in shape. One end is a shaft tube end, and the axis of the shaft tube end is orthogonal to the stringing direction of the setting rod 2600, i.e., parallel to the first rotation axes X11 and X12. The other end is a plate-shaped end, which includes a flat surface facing the link 2110. The first joint module 2400 also includes two first face gears 2410 and 2420, a first spring 2430, and a first screw 2440. The first face gear 2410 is rotationally limited to the link 2110. The first face gear 2420 is rotationally limited to the plate-shaped end of the setting rod 2600. The first screw 2440 can lock the link 2110 and the setting rod 2600.

[0128] Referring to FIG. 5, and FIGS. 1-4, FIG. 5 is a cross-sectional view of the positioning support structure 2000 and the quick release structure 2000a of the embodiment of FIG. 2 along the section line 5-5. The quick release structure 2000a can include a first fixed seat 2100a, a pivot hole 2200a, a limiting pin hole 2300a, a positioning pin 2400a, and a first elastic member 2500a. The first fixed seat 2100a is connected to the chair body 1000 and includes two protruding arms 2110a, 2120a spaced apart from each other. The pivot hole 2200a penetrates one of the two protruding arms 2110a, 2120a along a first penetration direction (not shown) parallel to the first rotation axes X11, X12. The limiting pin hole 2300a penetrates the other of the two protruding arms 2110a, 2120a along the first penetration direction. The positioning pin 2400a is inserted into the setting rod 2600 of the positioning support structure 2000 and is arranged in the first fixed seat 2100a. The positioning pin 2400a includes a pressure receiving end 2410a and a limiting end 2420a. The pressure receiving end 2410a is arranged in the pivot hole 2200a. The limiting end 2420a corresponds to the limiting pin hole 2300a, and the shape of the limiting end 2420a matches the shape of the limiting pin hole 2300a. The first elastic member 2500a is sleeved on the pressure receiving end 2410a. When the pressure receiving end 2410a is pressed by an external force, the limiting end 2420a is pushed out of the positioning support structure 2000, and the first elastic member 2500a is energized, allowing the positioning support structure 2000 to rotate relative to the first fixed seat 2100a. When the external force is removed, the first elastic member 2500a resets the pressure receiving end 2410a, and the limiting end 2420a returns to the positioning support structure 2000 to limit the rotation of the positioning support structure 2000.

[0129] Specifically, the first fixed seat 2100a can include a locking portion 2130a. The protruding arms 2110a, 2120a protrude from one end of the locking portion 2130a. The space between the two protruding arms 2110a, 2120a can accommodate the shaft tube end of the setting rod 2600. The pivot hole 2200a is located in the protruding arm 2110a, and the pivot hole 2200a includes a first section and a second section. The diameter of the first section is greater than the diameter of the second section. The first elastic member 2500a can be located in the first section, and one end of the first elastic member 2500a abuts against the step surface between the first section and the second section.

[0130] The diameter of the pressure receiving end 2410a is slightly smaller than the diameter of the second section of the pivot hole 2200a, so that the pressure receiving end 2410a can pass through the second section and enter the first section to be sleeved by the first elastic member 2500a. The shape of the limiting end 2420a is square, which is the same as the shape of the limiting pin hole 2300a, so that the limiting end 2420a is rotationally limited relative to the limiting pin hole 2300a, that is, the limiting end 2420a cannot rotate relative to the limiting pin hole 2300a. When the positioning pin 2400a is inserted into the limiting pin hole 2300a toward the pivot hole 2200a, the positioning pin 2400a sequentially passes through the limiting pin hole 2300a, the shaft tube end of the setting rod 2600, and the pivot hole 2200a, so that the setting rod 2600 can be connected with the first fixed seat 2100a. Further, the hole of the setting rod 2600 located at the shaft tube end can include a rotation preventing section and a pivot section. The rotation preventing section is adjacent to the limiting pin hole 2300a and has a shape matched with the limiting end 2420a, so that the positioning pin 2400a and the setting rod 2600 are rotationally limited when the limiting pin hole 2300a is located in the rotation preventing section.

[0131] The quick release structure 2000a can further include a cap 2600a and a locking member (not shown). The diameter of the cap 2600a is smaller than the diameter of the first section and can cover the pressure receiving end 2410a. The cap 2600a accommodates the other end of the first elastic member 2500a, and the locking member locks the pressure receiving end 2410a and the cap 2600a.

[0132] As shown in FIG. 5, at this time, the quick release structure 2000a is not operated, the limiting end 2420a of the positioning pin 2400a is located in the rotation preventing section, and the setting rod 2600 cannot rotate relative to the first fixed seat 2100a, so that the positioning support structure 2000 is in a fixed state and can stably support the user. Conversely, when the positioning support structure 2000 is to be released, the user can press the cap 2600a to move the positioning pin 2400a along the first penetrating direction to disengage from the rotation preventing section, so that the setting rod 2600 is not limited by the positioning pin 2400a and can freely rotate. Therefore, the positioning support structure 2000 can be pushed to change its position, so as not to block the movement of the user, which has the convenience of use. When the user releases the cap 2600a, the first elastic member 2500a can reset the positioning pin 2400a, and the positioning support structure 2000 returns to the fixed state.

[0133] Please refer to FIG. 6, FIG. 7 and FIG. 8, and refer to FIG. 1 together, wherein FIG. 6 is a perspective view of another position support structure 3000 and another quick release structure 3000a of the auxiliary chair of the embodiment of FIG. 1, FIG. 7 is an exploded view of the position support structure 3000 and the quick release structure 3000a of the embodiment of FIG. 6, and FIG. 8 is a sectional view of the position support structure 3000 and the quick release structure 3000a of the embodiment of FIG. 6 along the sectional line 8-8. Two position support structures 3000 are respectively arranged at two sides of the seat plate 1300. The two first joint modules 3300, 3400, the second joint module 3500 and the support plate 3700 of the position support structure 3000 are similar to the two first joint modules 2300, 2400, the second joint module 2500 and the support plate 2700 of the position support structure 2000, but the number of the connecting rods 3110, 3120, 3130 of the position support structure 3000 is three, and the connecting rod 3120, the connecting rod 3110 and the connecting rod 3130 (the third one) are arranged in order from top to bottom. The position support structure 3000 further comprises a third joint module 3900 and a setting rod 3600. The third joint module 3900 is connected to the connecting rod 3130, and the setting rod 3600 is connected to the third joint module 3900.

[0134] Specifically, the structure of the connecting rod 3130 is similar to that of the connecting rod 3110, and the connecting rod 3130 and the connecting rod 3110 are connected to each other through the first joint module 3400. The setting rod 3600 has different shapes at two ends, one end comprises a convex part end, and the other end is a rod end. The setting rod 3600 can further comprise a positioning recess 3610 at the rod end, and the convex part end is locked with the connecting rod 3130 through the third joint module 3900. More specifically, the structure of the third joint module 3900 is similar to that of the first joint module 3300 and comprises two third face gears 3910, 3920, a third spring 3930 and a third screw 3940. The third face gear 3910 is arranged on the connecting rod 3130, the third face gear 3920 is arranged on the setting rod 3600, and the third screw 3940 locks the connecting rod 3130 and the setting rod 3600.

[0135] The quick release structure 3000a can include a second fixing base 3100a, a slot 3200a, a positioning groove 3300a, a second elastic member 3500a, and a top bead 3400a. The second fixing base 3100a is connected to the chair body 1000. The slot 3200a penetrates the second fixing base 3100a along a second penetration direction, which is parallel to the second rotation axis X2. The positioning groove 3300a is disposed on the second fixing base 3100a and communicates with the slot 3200a, and the positioning axis (not shown) of the positioning groove 3300a is orthogonal to the second penetration direction. The second elastic member 3500a is accommodated in the positioning groove 3300a. The top bead 3400a is pushed against by the second elastic member 3500a to abut against the positioning support structure 3000. Wherein, the rod end of the setting rod 3600 can be used to insert the slot 3200a, the positioning recess 3610 of the setting rod 3600 can correspond to the top bead 3400a, and the positioning recess 3610 can be a tapered hole.

[0136] As shown in FIG. 7 and FIG. 8, the second fixing base 3100a can include a main body portion (not shown) and a lug portion (not shown), the lug portion is integrally connected to the side of the main body portion, the slot 3200a penetrates the main body portion, and the positioning groove 3300a is formed from the lug to the main body portion to communicate with the slot 3200a. The shape of the slot 3200a corresponds to the shape of the rod end of the setting rod 3600, and can be rotationally limited with the rod end. The side of the positioning groove 3300a adjacent to the slot 3200a can include a stop protrusion (not shown) to prevent the top bead 3400a from falling into the slot 3200a. The quick release structure 3000a can further include a blocking member 3600a, after the top bead 3400a and the second elastic member 3500a are put into the positioning groove 3300a, the blocking member 3600a can be locked into the positioning groove 3300a, thereby preventing the top bead 3400a and the second elastic member 3500a from being separated.

[0137] Since the positioning recess 3610 is a tapered hole, the cross-sectional shape in FIG. 8 is a triangle and includes a pushing surface. When the user wants to remove the positioning support structure 3000, a certain force can be applied to pull the positioning support structure 3000 upwards in FIG. 8, at this time, the pushing surface below the top bead 3400a pushes the top bead 3400a, so that the top bead 3400a pushes the second elastic member 3500a to compress in the direction of the left side of FIG. 8 (compression along the positioning axis), the top bead 3400a is separated from the positioning recess 3610 to allow the positioning support structure 3000 to be pulled out. Conversely, when the positioning support structure 3000 is to be set again, the rod end of the setting rod 3600 can be inserted into the slot 3200a, so that the guide groove (not shown) gradually guides the top bead 3400a to shrink, and finally can be clamped in the positioning recess 3610. It should be particularly pointed out that the number of the positioning recess 3610 and the guide groove can be two and symmetrically arranged on both sides of the rod end, so that the setting rod 3600 can be bidirectionally inserted to increase the convenience of use, but not limited thereto.

[0138] Referring to FIG. 9, and concurrently referring to FIG. 1, FIG. 9 is a partial perspective view of an auxiliary chair of the embodiment of FIG. 1. Two positioning support structures 4000 are disposed on two sides of the seat plate 1300, and the positioning support structures 4000 on the same side are arranged at intervals with the positioning support structures 3000. The two connecting rods 4110, 4120, the first joint modules 4300, 4400, the second joint module 4500, the setting rod 4600, and the support plate 4700 of the positioning support structure 4000 are similar to the two connecting rods 2110, 2120, the first joint modules 2300, 2400, the second joint module 2500, the setting rod 2600, and the support plate 2700 of the positioning support structure 2000, and the quick release structure 4000a is similar to the quick release structure 2000a, and details are not repeated. However, the only difference is that the shape and length of the first fixing seat (not labeled) of the quick release structure 4000a are slightly different from those of the quick release structure 2000a.

[0139] Referring to FIG. 10, and concurrently referring to FIG. 1, FIG. 10 is a perspective view of another positioning support structure 5000 and another quick release structure 5000a of the auxiliary chair of the embodiment of FIG. 1. The positioning support structure 5000 is disposed at the upper end of the backrest 1100. The two first joint modules 5300, 5400, the second joint module 5500, the setting rod 5600, and the third joint module 5900 of the positioning support structure 5000 are similar to the two first joint modules 3300, 3400, the second joint module 3500, the setting rod 3600, and the third joint module 3900 of the positioning support structure 3000, and the quick release structure 5000a is similar to the quick release structure 3000a, and details are not repeated. However, the difference is that the positioning support structure 5000 further includes a headrest 5700, a fourth joint module 5200, and a fifth joint module 5800, and the number of connecting rods 5110, 5120, 5130, 5140, and 5150 is five. The connecting rod 5130, the connecting rod 5110, the connecting rod 5140, the connecting rod 5150, and the connecting rod 5120 are sequentially arranged (from bottom to top) starting from the setting rod 5600. The connecting rod 5110 is connected to the connecting rod 5140 through the first joint module 5300. The connecting rod 5140 is connected to the connecting rod 5150 through the fourth joint module 5200. The connecting rod 5150 is connected to the connecting rod 5120 through the fifth joint module 5800. The connecting rod 5120 is connected to the headrest 5700 through the second joint module 5500. The fourth rotation axis of the fourth joint module 5200 is orthogonal to the first rotation axis and the second rotation axis X2. A fifth rotation axis of the fifth joint module 5800 is parallel to the first rotation axis. In this way, the headrest 5700 can be rotated forward and backward and swung left and right.

[0140] Please refer to FIG. 11, and refer to FIG. 1, FIG. 11 shows a perspective view of a more position support structure 6000 and a more quick release structure 6000a of the auxiliary chair of the embodiment of FIG. 1. The position support structure 6000 is arranged on one side of the seat plate 1300, and is close to the end of the seat plate 1300. The two first joint modules 6300, 6400 and the second joint module 6500 of the position support structure 6000 are similar to the two first joint modules 2300, 2400 and the second joint module 2500 of the position support structure 2000, and the quick release structure 6000a is similar to the quick release structure 2000a, and details are not described again. However, the number of the connecting rods 6110, 6120, 6130 of the position support structure 6000 is three, and the position support structure 6000 further includes two adapter rods 6140, 6150, a setting rod 6600, a third joint module 6900, a fourth joint module 6200, a fifth joint module 6800 and a foot support 6700. The three connecting rods 6110, 6120, 6130 are sequentially the connecting rod 6130, the connecting rod 6110 and the connecting rod 6120 from the setting rod 6600. The connecting rod 6130 is connected to the setting rod 6600 through the third joint module 6900, the connecting rod 6110 is connected to the connecting rod 6120 and the connecting rod 6130 through the first joint modules 6300, 6400 respectively, the connecting rod 6120 is connected to the adapter rod 6140 through the second joint module 6500, the adapter rod 6140 is connected to the adapter rod 6150 through the fourth joint module 6200, and the adapter rod 6150 is connected to the foot support 6700 through the fifth joint module 6800. The fourth rotation axis of the fourth joint module 6200 and the fifth rotation axis of the fifth joint module 6800 can be parallel to the second rotation axis X2.

[0141] From the above embodiments, it can be known that the position support structure of the present application can be arranged at any position of the auxiliary chair, and can include different components such as support plates, headrests and foot supports, etc. to support different parts of the user, and has joint modules and connecting rods to adjust the angle, and the number of the connecting rods can be determined according to the needs, and can also be matched with adapter rods and other components to achieve more angle adjustment. In addition, through the quick release structure, the position support structure can be removed or released without the aid of other tools, allowing it to be turned to a position that does not block the user's route, and has the convenience of use.

[0142] Although the present application has been disclosed as above through embodiments, it is not intended to limit the present application, and any person skilled in the art can make various modifications and decorations without departing from the spirit and scope of the present application, and therefore the protection scope of the present application shall be subject to the appended claims.

Claims

1. An assist chair, characterized in that, The chair body comprises: a chair body; at least one quick release structure connected to the chair body; and at least one position support structure connected to the at least one quick release structure and comprising: at least two connecting rods arranged in series; two first joint modules respectively connected to two ends of a first one of the at least two connecting rods, each of the first joint modules having a first rotation axis, and the first rotation axes of the two first joint modules being parallel to each other; and a second joint module connected to an end of a second one of the at least two connecting rods away from the first one and having a second rotation axis orthogonal to each of the first rotation axes; wherein, when the at least one position support structure is adjusted, each of the first joint modules is switched from a limiting state to an adjusting state to allow the first one of the at least two connecting rods to rotate; and the at least one quick release structure is operated to allow the at least one position support structure to rotate as a whole relative to the chair body or to be separated from the chair body.

2. The assist chair of claim 1, wherein, The at least one quick release structure comprises: a first fixed seat connected to the chair body and comprising two protruding arms spaced apart from each other; a pivot hole penetrating one of the two protruding arms in a first penetration direction, the first penetration direction being parallel to each of the first rotation axes; a limiting pin hole penetrating the other one of the two protruding arms in the first penetration direction; a positioning pin inserted into the at least one position support structure and assembled in the first fixed seat, the positioning pin comprising a pressure receiving end and a limiting end, the pressure receiving end being accommodated in the pivot hole, the limiting end corresponding to the limiting pin hole, and the limiting end being shaped to match the shape of the limiting pin hole; and a first elastic member sleeved on the pressure receiving end; wherein, after the pressure receiving end is pressed by an external force, the limiting end is pushed out of the at least one position support structure and the first elastic member is energized to allow the at least one position support structure to rotate relative to the first fixed seat, and when the external force is removed, the first elastic member resets the pressure receiving end and the limiting end returns to the at least one position support structure to limit the rotation of the at least one position support structure.

3. The auxiliary chair according to claim 2, wherein The at least one position support structure further comprises: a setting rod connected to one of the two first joint modules; wherein the positioning pin of the at least one quick release structure is inserted into the setting rod.

4. The auxiliary chair according to claim 1, wherein The at least one quick release structure comprises: a second fixed seat connected to the chair body; a slot penetrating the second fixed seat in a second penetration direction, the second penetration direction being parallel to the second rotation axis; a positioning groove provided in the second fixed seat and communicating with the slot, a positioning axis of the positioning groove being orthogonal to the second penetration direction; a second elastic member accommodated in the positioning groove; and a top bead pushed against the at least one position support structure by the second elastic member. The number of the at least two connecting rods is greater than or equal to three, the second one, the first one and a third one of the plurality of connecting rods are arranged in sequence, and the at least one position support structure further comprises:

5. The auxiliary chair according to claim 4, wherein a third joint module connected to the third one of the plurality of connecting rods; and a setting rod connected to the third joint module and used to be inserted into the slot, the setting rod comprising a positioning recess corresponding to the top bead of the at least one quick release structure. The chair body comprises:

6. An assist chair characterized by, a chair body; at least one quick release structure connected to the chair body; and ​ At least one position support structure connected to the at least one quick release structure and comprising: At least two links arranged in series and having a series direction; Two first joint modules respectively connected to two ends of a first one of the at least two links in the series direction, each of the first joint modules having a first rotation axis, the first rotation axes of the two first joint modules being parallel to each other, each of the first joint modules comprising two first face gears engaged with each other; and A second joint module connected to an end of a second one of the at least two links and having a second rotation axis, the second rotation axis being orthogonal to each of the first rotation axes and parallel to the series direction; Wherein, when adjusting the at least one position support structure, each of the first joint modules is switched from a limiting state to an adjusting state, allowing the first one of the at least two links to rotate; and the at least one quick release structure is operated to allow the at least one position support structure to rotate relative to the chair body as a whole or to be separated from the chair body. The at least one quick release structure comprises:

7. The auxiliary chair according to claim 6, wherein A first fixed seat connected to the chair body and comprising two convex arms spaced apart from each other; A pivot hole penetrating one of the two convex arms in a first penetrating direction, the first penetrating direction being parallel to the first rotation axis; A limiting pin hole penetrating the other one of the two convex arms in the first penetrating direction; A positioning pin inserted into the at least one position support structure and assembled to the first fixed seat, the positioning pin comprising a pressure end and a limiting end, the pressure end being accommodated in the pivot hole, the limiting end corresponding to the limiting pin hole, and the shape of the limiting end matching the shape of the limiting pin hole; and A first elastic member sleeved on the pressure end; Wherein, after the pressure end is pressed by an external force, the limiting end is pushed out of the at least one position support structure and the first elastic member is energized, allowing the at least one position support structure to rotate relative to the first fixed seat, and when the external force is removed, the first elastic member resets the pressure end, the limiting end returns to the at least one position support structure to limit the rotation of the at least one position support structure. The at least one position support structure further comprises: A setting rod connected to one of the two first joint modules; Wherein, the positioning pin of the at least one quick release structure is inserted into the setting rod.

8. The auxiliary chair of claim 7, wherein, The at least one quick release structure comprises: A second fixed seat connected to the chair body; An insertion slot penetrating the second fixed seat in a second penetrating direction, the second penetrating direction being parallel to the second rotation axis; 9. The supplemental chair of claim 6, wherein, A positioning groove provided in the second fixed seat and communicating with the insertion slot, a positioning axis of the positioning groove being orthogonal to the second penetrating direction; A second elastic member accommodated in the positioning groove; and A top bead pushed against by the second elastic member to abut against the at least one position support structure. The number of the at least two links is greater than or equal to three, the second one, the first one and a third one of the plurality of links are arranged in sequence, and the at least one position support structure further comprises: A third joint module connected to the third one of the plurality of links; and A setting rod connected to the third joint module and used to be inserted into the insertion slot, the setting rod comprising a positioning concave corresponding to the top bead of the at least one quick release structure.

10. The auxiliary chair of claim 9, wherein, ​ ​ ​

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