Folding chair capable of being used as walking stick

Abstract

The utility model discloses a folding chair capable of being used as a walking stick. The folding chair comprises a plurality of supporting rods, the plurality of supporting rods are pivotally mounted on the middle connecting piece, so that the plurality of supporting rods can be unfolded and folded relative to each other; the flexible bearing surface is connected to the upper portions of the multiple supporting rods, when the multiple supporting rods are unfolded, the flexible bearing surface forms a seat of the folding chair, and the multiple supporting rods comprise a walking stick supporting rod and at least two seat supporting rods; the walking stick supporting rod comprises a fixed rod, an adjusting rod and a walking stick handle arranged at the top end of the walking stick supporting rod, the walking stick supporting rod is pivotally installed on the middle connecting piece through the fixed rod, the adjusting rod and the fixed rod are connected in an axially telescopic and sleeved mode, and the flexible bearing face is connected to the upper portion of the fixed rod. According to the folding chair capable of being used as the walking stick, the flexible bearing surface is connected to the upper part of the fixed rod, so that the interference influence between the flexible bearing surface and the telescopic movement of the walking stick supporting rod can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of folding chairs, in particular to a folding chair which can be used as a crutch. Background Art

[0002] Crutches can help elderly people or other people with limited mobility to stand or walk with support. Folding chairs can help elderly people or other people with limited mobility to sit and rest anytime and anywhere. Elderly people or other people with limited mobility often need to carry both crutches and folding chairs when traveling, which brings a lot of inconvenience to travel.

[0003] Currently, there is a lack of a product that is easy to carry and has strong practicality and can solve the above problems. Utility Model Content

[0004] The utility model aims to provide a folding chair which can be used as a crutch, so as to at least partially overcome the deficiencies in the prior art.

[0005] According to an embodiment of the utility model, there is provided a folding chair that can be used as a crutch, the folding chair comprising:

[0006] Multiple struts;

[0007] an intermediate connector on which the plurality of struts are pivotally mounted so that the plurality of struts can be expanded and collapsed relative to each other; and

[0008] A flexible supporting surface, the flexible supporting surface is connected to the upper part of the plurality of support rods, and when the plurality of support rods are unfolded, the flexible supporting surface forms the seat surface of the folding chair,

[0009] Wherein, the multiple support rods include a crutch support rod and at least two chair surface support rods, the crutch support rod includes a fixed rod, an adjustment rod and a crutch handle arranged at the top end of the crutch support rod and is pivotally mounted on the intermediate connecting member through the fixed rod, the adjustment rod and the fixed rod are axially telescopically sleeved, and the flexible supporting surface is connected to the upper part of the fixed rod.

[0010] Advantageously, the fixing rod is provided with a first positioning structure, and the adjusting rod is provided with a second positioning structure, the first positioning structure and the second positioning structure are aligned in the circumferential direction and are used to cooperate with each other to position the adjusting rod at different positions relative to the fixing rod in the axial direction; and

[0011] The adjusting rod is provided with a guide groove which is long in the axial direction, and the guide groove guides a guide column which is arranged on the fixing rod or the intermediate connecting member to slide along the guide groove.

[0012] Advantageously, the adjusting rod is sleeved on the outside of the fixing rod and extends from the upper end of the fixing rod;

[0013] The folding chair also includes a fixing ring sleeved on the outside of the adjusting rod, one end of the guide column is fixed on the fixing ring, and the other end passes through the guide groove and is fixed on the fixing rod; and

[0014] The flexible supporting surface is connected to the fixing ring.

[0015] Advantageously, the first positioning structure comprises a marble and a bias spring disposed in the fixed rod, the bias spring biases the marble radially outward, the second positioning structure comprises at least two positioning holes disposed on the side wall of the adjusting rod, when the marble is engaged in different positioning holes, the adjusting rod is axially positioned at different positions relative to the fixed rod; and

[0016] The fixing ring is provided with an adjustment hole, and the adjustment hole is directly opposite to the marble. When the marble is fitted in the positioning hole, the marble further protrudes into the adjustment hole.

[0017] Advantageously, the fixing rod is sleeved on the outside of the adjusting rod, the intermediate connecting member is provided with a pin, the pin passes through the fixing rod so that the fixing rod can pivot around it, and the pin passes through the guide slot of the adjusting rod and constitutes the guide column.

[0018] Advantageously, the adjusting rod extends from the lower end of the fixing rod.

[0019] Advantageously, the first positioning structure includes a marble and a bias spring disposed in the adjusting rod, the bias spring biasing the marble radially outward, and the second positioning structure includes at least two positioning holes disposed on the side wall of the fixed rod, when the marble is engaged in different positioning holes, the adjusting rod is axially positioned at different positions relative to the fixed rod.

[0020] Advantageously, both ends of the guide groove in the length direction are closed.

[0021] Advantageously, the intermediate connecting member has a plurality of limit slots provided therethrough, the plurality of support rods are pivotably provided in the plurality of limit slots, the limit slots include an inclined limit wall surface, the inclined limit wall surface is a part of a cylindrical surface enclosing a cylindrical space, and when the support rod provided in the limit slot is unfolded, the inclined limit wall surface forms a surface contact with the support rod and prevents the support rod from further rotating in the direction of its unfolding, wherein:

[0022] The inclined limiting wall surface includes a first inclined limiting surface and a second inclined limiting surface, wherein the first inclined limiting surface and the second inclined limiting surface are staggered from each other in the axial direction of the cylindrical space and are located on opposite sides of the axis.

[0023] Advantageously, a plurality of connection grooves are provided on the upper surface or the lower surface of the intermediate connection member, and a plurality of fixing pin holes are provided on the circumferential surface of the intermediate connection member, and the plurality of fixing pin holes respectively penetrate a corresponding one of the connection grooves; and

[0024] The folding chair also includes a return spring, one end of which is inserted into the connecting groove and fixed by a pin inserted into the fixing pin hole, and the other end is connected to a corresponding support rod for applying a return elastic force to the support rod to make the support rod collapse.

[0025] According to the folding chair that can be used as a crutch, a retractable crutch support rod composed of a fixed rod and an adjusting rod with a specific structure is arranged among the multiple support rods, so that the folding chair can also be used as a retractable crutch. It is simple to operate and easy to carry when used. Moreover, the utility model connects the flexible supporting surface to the upper part of the fixed rod, so that the flexible supporting surface can be maintained on the upper part of the fixed rod, thereby preventing the flexible supporting surface from being disturbed and moved when the adjusting rod is extended and retracted relative to the fixed rod, thereby ensuring the stability of the flexible supporting surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0027] Figure 1 is a schematic three-dimensional structural diagram of an example of a folding chair according to the first embodiment of the utility model;

[0028] Figure 2 for Figure 1 The three-dimensional structural diagram of the folding chair shown is in a folded state, wherein the flexible supporting surface is not shown;

[0029] Figure 3 for Figure 1 An exploded view of the parts of the cane support rod of the folding chair shown;

[0030] Figure 4 for Figure 1 Schematic perspective views of the adjustment rod in the folding chair shown from different perspectives;

[0031] Figure 5 for Figure 1 A partial cross-sectional view of the crutch support rod of the folding chair is shown, showing the structural matching relationship between the fixing ring, the adjustment rod and the fixing rod;

[0032] Figure 6 for Figure 5 A schematic perspective view of the fixing ring shown;

[0033] Figure 7 for Figure 1 A schematic perspective view of the intermediate connecting member of the folding chair shown;

[0034] Figure 8 For along Figure 7 A partial cross-sectional view of the intermediate connecting member taken at the position indicated by the middle section line AA;

[0035] Fig. 9 for Figure 1 A partial enlarged view of the folding chair in a folded state, wherein the intermediate connecting member is shown in a partial cross-sectional view;

[0036] Fig.10 is a schematic three-dimensional structural diagram of an example of a folding chair according to the second embodiment of the present utility model;

[0037] Fig.11 for Fig.10 The three-dimensional structural diagram of the folding chair shown is in a folded state, wherein the flexible supporting surface is not shown;

[0038] Fig.12 It is a schematic three-dimensional diagram of a fixing rod and an adjusting rod that can be used for a folding chair in Embodiment 2 of the present utility model. DETAILED DESCRIPTION

[0039] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the invention. For ease of description, only the parts related to the invention are shown in the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other.

[0040] First, refer to Figures 1 to 9 An example of a folding chair that can be used as a crutch according to the first embodiment of the utility model is introduced, namely, the folding chair 1.

[0041] Figure 1 is a schematic three-dimensional structural diagram of a folding chair 1 according to the first embodiment of the utility model, Figure 2 for Figure 1 The folding chair 1 is shown in a schematic diagram when it is in a folded state. Figure 1 As shown, the folding chair 1 of the present invention comprises a plurality of support rods 10, an intermediate connecting member 20 and a flexible supporting surface 30. The plurality of support rods 10 are pivotally mounted on the intermediate connecting member 20, so that the plurality of support rods 10 can be unfolded and retracted relative to each other, thereby placing the folding chair 1 in an unfolded state (see FIG. Figure 1) and collapsed state (see Figure 2 The flexible support surface 30 is connected to the upper part of the plurality of support rods 10. When the plurality of support rods 10 are unfolded, the flexible support surface 30 forms the seat surface of the folding chair 1. Optionally, the flexible support surface 30 can be made of Oxford cloth, Teslin cloth or other cloth.

[0042] like Figure 1 As shown, the plurality of support rods 10 of the folding chair 1 include a crutch support rod 100 and at least two seat support rods 10a. Figure 1 and Figure 2 In the example shown, the folding chair 1 includes four support rods 10, including a crutch support rod 100 and three seat support rods 10a. It should be understood that the number of support rods in the folding chair according to the embodiment of the utility model is not limited to four, but can be more or less, as long as good seat support can be achieved.

[0043] Figure 3 FIG. 2 shows an exploded view of the parts of the crutch support 100. Figure 3 As more clearly shown in FIG. 1 , the crutch support rod 100 includes a fixing rod 110, an adjustment rod 120 and a crutch handle 130. Figure 1 and Figure 2 As shown, the crutch handle 130 is arranged at the top end of the crutch support rod 100, and the crutch support rod 100 is pivotally mounted on the intermediate connecting member 20 through the fixing rod 110, and the adjustment rod 120 is axially telescopically sleeved with the fixing rod 110. Figure 2 The expansion and contraction of the adjusting rod 120 relative to the fixing rod 110 is shown. Figure 2 Figure (a) shows the crutch support rod 100 in an extended state, and Figure (b) shows the crutch support rod 100 in a retracted state. Figure 3 In the collapsed state shown in FIG. 1 , the user can conveniently carry the folding chair 1; the crutch support rod 100 is in the state shown in FIG. Figure 2 In the extended state shown, the user can use the folding chair 1 as a crutch. Figure 1 As shown, the flexible bearing surface 30 is connected to the upper portion of the fixing rod 110 .

[0044] According to the folding chair 1 that can be used as a crutch in the embodiment of the utility model, a crutch support rod 100 with a retractable structure is provided among the plurality of support rods 10, so that the folding chair 1 can also be used as a retractable crutch, which is convenient to use and easy to carry. Moreover, according to the embodiment of the utility model, by connecting the flexible support surface 30 to the upper part of the fixed rod 110, the function of the folding chair and the function of the retractable crutch can be more harmoniously combined, avoiding interference between the flexible support surface and the retractable activity of the crutch support rod, so that the length of the crutch support rod can be flexibly adjusted to meet the use needs of the crutch, and the folding chair can be ensured to be able to unfold at any time to form a good and stable seat surface without being affected by the retractable state of the crutch support rod.

[0045] Optionally, multiple support rods 10 can be connected to the intermediate connecting member 20 via pins or a pin shaft. The intermediate connecting member 20 can be provided with a rotating hole for installing the pin shaft. Multiple support rods 10 are provided with mounting holes corresponding to the positions of the rotating holes. The pins or pin shafts pass through the rotating holes and the mounting holes, so that the multiple support rods 10 can pivot relative to the intermediate connecting member 20.

[0046] Continue to refer to Figure 3 The fixed rod 110 of the folding chair 1 may be provided with a first positioning structure 111, and the adjusting rod 120 may be provided with a second positioning structure 121. The first positioning structure 111 and the second positioning structure 121 are aligned in the circumferential direction of the crutch support rod 100, and are used to cooperate with each other to position the adjusting rod 120 at different positions along the axial direction relative to the fixed rod 110, so as to set the crutch support rod 100 at different telescopic lengths. By operating the first positioning structure 111 and / or the second positioning structure 121, the user can conveniently select a suitable telescopic length.

[0047] Figure 4 Schematic three-dimensional diagram of the adjustment rod 120 of the folding chair 1, wherein Figure (a) and Figure (b) show the structure of the adjustment rod 120 at different circumferential positions. Figure 4 In the example shown in FIG. (a), the second positioning structure 121 on the adjustment rod 120 may include a plurality of positioning holes 121a, but the present invention is not limited thereto. In some preferred examples, such as Figure 4 As shown in the middle figure (b), the adjusting rod 120 may be provided with a guide groove 122 which is elongated in the axial direction. According to the first embodiment, the guide groove 122 guides a guide column X (see Figure 1 and Figure 3) slides along it. Optionally, the guide column X can be composed of any structure suitable for sliding along the guide groove 122, such as a pin, a pin shaft or a bolt. The second positioning structure 121 and the guide groove 122 can be set at different circumferential positions on the adjusting rod 120, for example, 90° or 180° different in the circumferential direction. The guiding effect of the guide groove 122 can ensure that the adjusting rod 120 and the fixed rod 110 maintain a stable relative position relationship in the circumferential direction, thereby ensuring that the first positioning structure 111 and the second positioning structure 121 can accurately cooperate to achieve positioning during the telescopic adjustment process of the crutch support rod 100. Compared with the prior art that ensures that the circumferential position of the telescopic rod remains unchanged during the telescopic process by using the non-circular cross-sectional shape of the rod, thereby ensuring the positioning after the telescopic adjustment, the crutch support rod with the above-mentioned guide groove structure according to the embodiment of the utility model can advantageously adopt a circular rod, avoid the limitations brought by the use of special cross-section pipes, and also facilitate smooth telescopic adjustment.

[0048] Figure 4 In the example shown, both ends of the guide groove 122 in the length direction are closed. The closed guide groove 122 can prevent the adjusting rod 120 from being separated from the fixed rod 110 when the adjusting rod 120 slides in the axial direction of the fixed rod 110. However, the utility model is not limited to this. In other examples, one end of the guide groove 122 in the length direction can be open so as to receive the guide column from the open end. In other examples, both ends of the guide groove 122 in the length direction can be open, as long as the adjusting rod 120 can maintain the strength of its structure. The structure with open ends of the guide groove can be suitable for example when the adjusting rod 120 is sleeved inside the fixed rod 110. In addition, the adjusting rod 120 can cooperate with structures such as end caps, end plugs, and collars to close the open guide groove ends, thereby preventing the adjusting rod 120 from being separated from the fixed rod 110, which will not be repeated here.

[0049] Figure 5 for Figure 1 The partial cross-sectional view of the crutch support rod 100 of the folding chair 1 is shown. In some examples according to the first embodiment, as Figure 5 As shown, the adjustment rod 120 of the crutch support rod 100 can be sleeved on the outside of the fixing rod 110 and extend from the upper end of the fixing rod 110. In this way, when the folding chair 1 is used as a crutch, the lower ends of the seat support rod 10a and the fixing rod 110 can be used for support (see FIG. Figure 2 ), there are more points of force, and the center of gravity of the crutch will be correspondingly biased downward, which can provide better support stability.

[0050] exist Figure 5In the example shown, the crutch support rod 100 may further include a fixing ring 140 sleeved on the outside of the adjustment rod 120. In this case, the guide column X may be configured to have one end fixed / connected to the fixing ring 140 (for example, fixed / connected to a fixing hole 141 on the fixing ring 140, see Figure 6 ), the other end of the adjusting rod 120 passes through the guide groove 122 and is fixed on the fixing rod 110, and the flexible supporting surface 30 is connected to the upper part of the fixing rod 110 by being connected to the fixing ring 140. The fixing ring 140 can keep a certain distance between the flexible supporting surface 30 and the crutch support rod, so as to prevent the flexible supporting surface 30 from being brought into the guide groove 122 when the adjusting rod 120 is extended or retracted, causing inconvenience in use.

[0051] Optionally, the guide column X can be in the form of a T-shaped pin, and the T-shaped head of the T-shaped pin can be used to clamp the flexible bearing surface 30 between the guide column X and the fixing ring 140, thereby fixing the flexible bearing surface 30, while the body of the pin passes through the guide groove 122 of the adjustment rod 120 and is fixed to the fixing rod 110 for guiding the telescopic adjustment.

[0052] Figure 5 The first and second positioning structures that can be used for the crutch support rod are also exemplarily shown. Figure 5 As shown, optionally, the first positioning structure 111 of the fixing rod 110 may include a marble 111a and a bias spring 111b, the marble 111a and the bias spring 111b are arranged in the fixing rod 110, and the bias spring 111b biases the marble 111a radially outward; the second positioning structure 121 of the adjusting rod 120 may include at least two positioning holes 121a, combined with reference Figure 4 In the middle figure (a), the at least two positioning holes 121a are provided on the side wall of the adjusting rod 120. When the marbles 111a are fitted in different positioning holes 121a, the adjusting rod 120 is axially positioned at different positions relative to the fixing rod 110. It should be understood that the present invention is not limited to the specific structures of the first positioning structure and the second positioning structure. For example, in some other examples, the first positioning structure 111 can be a pin or a bolt, as well as other structures that can achieve selective positioning.

[0053] Alternatively, if Figure 6 As shown, the fixing ring 140 may be provided with an adjustment hole 142. Figure 5 As shown, the fixing ring 140 is arranged relative to the fixing rod 110 so that the adjustment hole 142 is directly opposite to the marble 111a, and when the marble 111a is engaged in the positioning hole 121a, the marble 111a further protrudes into the adjustment hole 142. The cooperation between the adjustment hole 142 and the marble 111a can improve the stability of the positioning between the adjusting rod 120 and the fixing rod 110.

[0054] Compared to Figure 5In the example shown, in some other examples according to the first embodiment, the fixing rod 110 can be configured to be sleeved on the outside of the adjusting rod 120. In these examples, the first positioning structure 111 of the fixing rod 110 can include at least two positioning holes 121a, and the second positioning structure 121 of the adjusting rod 120 can include a marble 111a and a bias spring 111b. In addition, when the fixing rod 110 is sleeved on the outside of the adjusting rod 120, the fixing ring 140 can be omitted.

[0055] In addition, in some other examples according to the first embodiment, the adjustment rod 120 may be configured to extend from the lower end of the fixed rod 110. In these examples, the crutch handle 130 is disposed at the upper end of the fixed rod 110, the guide groove 122 of the adjustment rod 120 is disposed at a position relative to the lower end of the fixed rod 110, and a pin may be provided as a guide column X, the pin passing through the guide groove 122 of the adjustment rod 120 and one end of the pin being fixed to the fixed rod 110. In addition, in these examples, the adjustment rod 120 may be sleeved on the inner side or the outer side of the fixed rod 110, and when the adjustment rod 120 is sleeved on the outer side of the fixed rod 110, a structure similar to the fixing ring 140 described above may be used in combination.

[0056] Figure 7 FIG. 2 is a schematic three-dimensional diagram of the intermediate connecting member 20 of the folding chair 1. Figure 7 As shown, the intermediate connecting member 20 has a plurality of limiting slots 21 extending therethrough, and the plurality of supporting rods 10 can be pivotally inserted into the plurality of limiting slots 21 . Figure 8 For along Figure 7 A partial cross-sectional view taken at the position indicated by the middle section line AA. Figure 8 As shown, advantageously, the limiting slot 21 may include an inclined limiting wall 211, which is a portion of a cylindrical surface that encloses a cylindrical space S. When the support rod 10 passing through the limiting slot 21 is unfolded, the inclined limiting wall 211 abuts against the support rod 10 to form surface contact and prevents the support rod 10 from further rotating along the direction of its unfolding.

[0057] Advantageously, if Figure 8As shown, the inclined limiting wall surface 211 may include a first inclined limiting surface 211a and a second inclined limiting surface 211b, and the first inclined limiting surface 211a and the second inclined limiting surface 211b are staggered from each other in the axial direction of the cylindrical space S and are located on the opposite side of the axis. When the folding chair 1 is in the unfolded state, the first inclined limiting surface 211a and the second inclined limiting surface 211b form surface contact with the support rod 10, thereby avoiding excessive stress concentration at the supporting position. At the same time, since the first inclined limiting surface 211a and the second inclined limiting surface 211b are staggered from each other in the axial direction of the cylindrical space S and are located on the opposite side of the axis, a greater supporting torque can be provided for the support rod, making the folding chair 1 more stable in structure in the unfolded state.

[0058] Continue to refer to Figure 7 Advantageously, the limiting slot 21 may further include a vertical limiting wall 212, which abuts against the support rod 10 and preferably forms a surface contact when the support rod 10 passing through the limiting slot 21 is folded, thereby preventing the support rod 10 from further rotating in the direction of folding. Figure 8 The structure of the vertical limiting wall 212 is exemplarily shown in FIG. Figure 8 As shown, advantageously, the vertical limit wall 212 may include a first vertical limit surface 212a and a second vertical limit surface 212b. When the support rod 10 passing through the limit slot 21 is folded, the first vertical limit surface 212a and the second vertical limit surface 212b are staggered from each other in the axial direction of the support rod 10 and are located on opposite sides of the axis, so that a greater supporting torque can be provided for the support rod 10, making the structure of the folding chair more stable in the folded state.

[0059] Fig. 9 FIG. 2 is a partial enlarged view of the folding chair 1 according to the first embodiment of the present invention in the folded state, wherein the intermediate connecting member 20 is shown in a partial cross-sectional view. Fig. 9 As shown, the folding chair 1 may further include a return spring 24, which is connected between the intermediate connecting member 20 and each support rod 10, and is used to help the multiple support rods 10 return to the folded state.

[0060] By way of example only and not limitation, Figure 7 and Figure 8 As shown, a plurality of connection grooves 22 may be provided on the upper surface or the lower surface of the intermediate connecting member 20, and a plurality of fixing pin holes 23 may be provided on the circumferential surface of the intermediate connecting member 20; Figure 8 As shown more clearly in FIG. 1 , a plurality of fixing pin holes 23 respectively penetrate a corresponding connecting slot 22. Fig. 9As shown, one end of the return spring 24 is inserted into the connection slot 22 and fixed by the pin P1 inserted into the fixing pin hole 23, and the other end is connected to a corresponding support rod, so as to apply a return elastic force to the support rod to make the support rod collapse. When the folding chair 1 is lifted, under the action of the return elastic force of the return spring 24, the plurality of support rods 10 are automatically collapsed, so that the folding and stowing of the folding chair 1 can be more convenient.

[0061] Next, the folding chair according to the second embodiment of the present invention is introduced. The folding chair according to the second embodiment has a substantially same structure as the folding chair according to the first embodiment, and the main difference is that in the folding chair according to the second embodiment, the guide column X' is arranged on the middle connecting member. Figures 10 to 12 An example of a folding chair according to the second embodiment of the present invention, namely the folding chair 1 ′, is introduced in detail.

[0062] Fig.10 is a three-dimensional structural diagram of the folding chair 1' in an unfolded state, Fig.11 for Fig.10 The folding chair 1' is shown in a schematic diagram when it is in a folded state. Fig.10 and Fig.11 As shown, the folding chair 1' comprises a plurality of support rods 10, an intermediate connecting member 20' and a flexible supporting surface 30'. The plurality of support rods 10 are pivotally mounted on the intermediate connecting member 20', so that the plurality of support rods 10 can be unfolded and folded relative to each other, thereby placing the folding chair 1' in an unfolded state and a folded state respectively. The flexible supporting surface 30' is connected to the upper part of the plurality of support rods 10, and when the plurality of support rods 10 are unfolded, the flexible supporting surface 30 forms the seat surface of the folding chair 1'. Fig.10 and Fig.11 In the illustrated example, the folding chair 1' comprises three support rods 10, including a crutch support rod 100' and two seat support rods 10a, but it should be understood that the present invention is not limited to the number of support rods 10. Fig.10 and Fig.11 As shown, the crutch support rod 100' includes a fixed rod 110', an adjustment rod 120' and a crutch handle 130. The crutch handle 130 is arranged at the top of the crutch support rod 100'. The crutch support rod 100' is pivotally mounted on the intermediate connecting member 20' through the fixed rod 110'. The adjustment rod 120' and the fixed rod 110' are axially telescopically sleeved, and the flexible bearing surface 30' is connected to the upper part of the fixed rod 110'.

[0063] Similar to the folding chair 1, the fixed rod 110' can be provided with a first positioning structure 111', and the adjustment rod 120' can be provided with a second positioning structure 121'. The first positioning structure 111' and the second positioning structure 121' are aligned in the circumferential direction of the crutch support rod 100', and are used to cooperate with each other to position the adjustment rod 120' at different positions relative to the fixed rod 110' along the axial direction, so as to set the crutch support rod 100 at different telescopic lengths. By operating the first positioning structure 111' and / or the second positioning structure 121', the user can conveniently select a suitable telescopic length.

[0064] Fig.12 1 is a perspective view of a fixing rod 110' and an adjusting rod 120' that can be used for a folding chair 1'. Fig.12 As shown, the adjusting rod 120' may also be provided with an axially elongated guide groove 122'. According to the second embodiment, the guide groove 122' guides a guide column X' (see Fig.11 and Fig.12 ) slides along it. Specifically, the fixed rod 110' is sleeved on the outside of the adjusting rod 120', and the intermediate connecting member 20' is provided with a pin P2, which passes through the fixed rod 110' so that the fixed rod 110' can pivot around it, and the pin P2 passes through the guide groove 122' of the adjusting rod 120' to form a guide column X'. Through the cooperation of the guide column X' with the fixed column 110' and the guide groove 122', it can be ensured that the adjusting rod 120' and the fixed rod 110' maintain a stable relative position relationship in the circumferential direction, thereby ensuring that the first positioning structure 111' and the second positioning structure 121' can accurately cooperate to achieve positioning during the telescopic adjustment process of the crutch support rod 100'.

[0065] exist Figures 10 to 12 In the example shown, the adjustment rod 120' extends from the lower end of the fixed rod 110', which can simply and effectively prevent the adjustment process of the adjustment rod 120' relative to the fixed rod 110' from affecting the connection and fixation between the flexible support surface 30' and the crutch support rod 100'.

[0066] It should be understood that the folding chair 1' according to the second embodiment is not limited to the adjusting rod 120' extending from the lower end of the fixing rod 110'. For example, in some other examples, the adjusting rod 120' can be arranged to extend from the upper end of the fixing rod 110'. In these examples, the crutch handle 130 is installed at the upper end of the adjusting rod 120', and the guide groove 122' of the adjusting rod 120' is arranged at the lower end of the adjusting rod 120' so as to cooperate with the guide column X' arranged on the intermediate connecting member 20'.

[0067] exist Figures 10 to 12In the example shown, the adjustment rod 120' is sleeved on the inner side of the fixed rod 110'. In this case, as an example only, the second positioning structure 121' of the adjustment rod 120' may include a marble 121a' and a bias spring (not shown) disposed in the adjustment rod 120', and the bias spring biases the marble 121a' radially outward; and the first positioning structure 111' of the fixed rod 110' may include at least two positioning holes 111a' disposed on the side wall of the fixed rod 110', and when the marble 121a' is engaged in different positioning holes 111a', the adjustment rod 120' is axially positioned at different positions relative to the fixed rod 110' (see Fig.11 ).

[0068] It should be understood that in some other examples according to Example 2, the adjusting rod 120' can be configured to be sleeved on the outside of the fixed rod 110'. In these examples, the first positioning structure 111' of the fixed rod 110' can include a marble 121a' and a bias spring, and the second positioning structure 121' of the adjusting rod 120' can include at least two positioning holes 111a', which will not be repeated here.

[0069] The folding chair according to Embodiment 1 and Embodiment 2 of the present invention is introduced above with reference to the accompanying drawings, wherein the guide posts for cooperating with the guide grooves are respectively arranged on the fixed rod and the intermediate connecting member. However, the present invention is not limited thereto. In some other embodiments, the crutch support rod of the folding chair may include a first guide post and a second guide post, the first guide post may adopt the guide post X arranged on the fixed post in the folding chair 1 according to Embodiment 1 described above, and the second guide post may adopt the guide post X' arranged on the intermediate connecting member in the folding chair 1' according to Embodiment 2 described above. Accordingly, a longer guide groove may be arranged on the adjusting rod 120 to cooperate with the first guide post and the second guide post, or two guide grooves may be arranged to cooperate with the first guide post and the second guide post, respectively.

[0070] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A folding chair that can be used as a crutch, characterized in that: include: Multiple struts; an intermediate connecting member on which the plurality of struts are pivotally mounted so that the plurality of struts can be expanded and collapsed relative to each other; and A flexible supporting surface, the flexible supporting surface is connected to the upper part of the plurality of support rods, and when the plurality of support rods are unfolded, the flexible supporting surface forms the seat surface of the folding chair, Wherein, the multiple support rods include a crutch support rod and at least two chair surface support rods, the crutch support rod includes a fixed rod, an adjustment rod and a crutch handle arranged at the top end of the crutch support rod and is pivotally mounted on the intermediate connecting member through the fixed rod, the adjustment rod and the fixed rod are axially telescopically sleeved, and the flexible supporting surface is connected to the upper part of the fixed rod.

2. The folding chair according to claim 1, characterized in that: The fixing rod is provided with a first positioning structure, and the adjusting rod is provided with a second positioning structure, the first positioning structure and the second positioning structure are aligned in the circumferential direction and are used to cooperate with each other to position the adjusting rod at different positions relative to the fixing rod in the axial direction; and The adjusting rod is provided with a guide groove which is long in the axial direction, and the guide groove guides a guide column which is arranged on the fixing rod or the intermediate connecting member to slide along the guide groove.

3. The folding chair according to claim 2, characterized in that: The adjusting rod is sleeved on the outer side of the fixing rod and extends from the upper end of the fixing rod; The folding chair also includes a fixing ring sleeved on the outside of the adjusting rod, one end of the guide column is fixed on the fixing ring, and the other end passes through the guide groove and is fixed on the fixing rod; and The flexible supporting surface is connected to the fixing ring.

4. The folding chair according to claim 3, characterized in that: The first positioning structure includes a marble and a bias spring disposed in the fixed rod, the bias spring biases the marble radially outward, the second positioning structure includes at least two positioning holes disposed on the side wall of the adjustment rod, when the marble is engaged in different positioning holes, the adjustment rod is axially positioned at different positions relative to the fixed rod; and The fixing ring is provided with an adjustment hole, and the adjustment hole is directly opposite to the marble. When the marble is fitted in the positioning hole, the marble further protrudes into the adjustment hole.

5. The folding chair according to claim 2, characterized in that: The fixing rod is sleeved on the outer side of the adjusting rod, and the intermediate connecting member is provided with a pin, which passes through the fixing rod so that the fixing rod can pivot around it, and the pin passes through the guide groove of the adjusting rod and constitutes the guide column.

6. The folding chair according to claim 5, characterized in that: The adjusting rod extends from the lower end of the fixing rod.

7. The folding chair according to claim 5, characterized in that: The first positioning structure includes a marble and a bias spring arranged in the adjusting rod, and the bias spring biases the marble radially outward. The second positioning structure includes at least two positioning holes arranged on the side wall of the fixed rod. When the marble is engaged in different positioning holes, the adjusting rod is axially positioned at different positions relative to the fixed rod.

8. The folding chair according to any one of claims 3 to 7, characterized in that: Both ends of the guide groove in the length direction are closed.

9. The folding chair according to any one of claims 1 to 7, characterized in that: The intermediate connecting member has a plurality of limit slots provided therethrough, the plurality of support rods are pivotally provided in the plurality of limit slots, the limit slots include an inclined limit wall surface, the inclined limit wall surface is a part of a cylindrical surface enclosing a cylindrical space, and when the support rod provided in the limit slot is unfolded, the inclined limit wall surface forms a surface contact with the support rod and prevents the support rod from further rotating along the direction in which it is unfolded, wherein: The inclined limiting wall surface includes a first inclined limiting surface and a second inclined limiting surface, wherein the first inclined limiting surface and the second inclined limiting surface are staggered from each other in the axial direction of the cylindrical space and are located on opposite sides of the axis.

10. The folding chair according to any one of claims 1 to 7, characterized in that: A plurality of connection grooves are provided on the upper surface or the lower surface of the intermediate connection piece, and a plurality of fixing pin holes are provided on the circumferential surface of the intermediate connection piece, and the plurality of fixing pin holes respectively penetrate a corresponding one of the connection grooves; and The folding chair also includes a return spring, one end of which is inserted into the connecting groove and fixed by a pin inserted into the fixing pin hole, and the other end is connected to a corresponding support rod for applying a return elastic force to the support rod to make the support rod collapse.

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