Simple folding support frame and folding chair

Abstract

The utility model discloses a simple folding support frame and a folding chair. The first supporting pieces are rotationally connected with the upper part of the supporting seat; the second supporting pieces are rotationally connected with the lower part of the supporting seat; the connecting assembly is arranged in the supporting seat in a sliding mode in the first direction, the upper portion of the connecting assembly is connected with the first supporting piece, the lower portion of the connecting assembly is connected with the second supporting piece, and the connecting assembly is suitable for enabling rotation of the first supporting piece and rotation of the second supporting piece to be in mutual linkage; at least one guide column is arranged in the supporting base in the first direction, the connecting assembly is in sliding connection with the guide column, at least one sliding channel is formed in the supporting base in the first direction, and at least part of the connecting assembly is suitable for sliding along the sliding channel. The shell of the supporting base is used for guiding and limiting the moving process of the connecting assembly, and the overall size can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of outdoor equipment, and in particular to a simple folding support frame and a folding chair. Background Art

[0002] Camping is a short-term outdoor lifestyle. It is a temporary outdoor camping area specially set up for engineering, military, surveying, tourism, etc., including tents, straw huts, garages and other simple forms of short-term outdoor living camps. With the improvement of people's living standards, outdoor camping has gradually become popular as a form of leisure and entertainment. When people go camping outdoors, they usually bring tables, chairs, benches and other supplies to improve the comfort of camping. In order to achieve the purpose of portability during outdoor camping, tables, chairs and benches specially used for outdoor camping are usually designed as folding structures to effectively reduce the storage volume. Among them, folding chairs are the most frequently used items in outdoor camping, and higher requirements are placed on their structural stability and comfort.

[0003] However, the existing support frames of folding chairs have the following defects: the common support frames have a relatively complex structure, have many parts for linkage inside, are inconvenient to assemble, and have a relatively large overall size. Summary of the invention

[0004] One object of the present application is to provide a simple folding support frame and a folding chair with a compact and stable structure.

[0005] In order to achieve the above objectives, the technical solution adopted in this application is: a simple folding support frame, comprising:

[0006] Support seat;

[0007] A plurality of first support members, wherein the first support members are rotatably connected to the upper portion of the support seat;

[0008] A plurality of second support members, wherein the second support members are rotatably connected to the lower portion of the support seat;

[0009] A connecting assembly, the connecting assembly is slidably disposed in the supporting seat along a first direction, the upper portion of the connecting assembly is connected to the first supporting member, the lower portion of the connecting assembly is connected to the second supporting member, and the connecting assembly is suitable for making the rotation of the first supporting member and the rotation of the second supporting member mutually linked;

[0010] At least one guide column is provided in the support seat along the first direction, the connecting assembly is slidably connected to the guide column, at least one sliding channel is provided in the support seat along the first direction, and at least part of the connecting assembly is suitable for sliding along the sliding channel.

[0011] In some embodiments, there are multiple sliding channels, and the sliding channels are arranged along the circumference of the support seat. The sliding channels are suitable for accommodating at least a portion of the connecting assembly for connecting to the first support member in a one-to-one manner.

[0012] In some embodiments, the connection between the first support member and the connecting assembly is a rack and pinion connection, a rack structure is arranged on the connecting assembly along a first direction, and the first support member is provided with a gear structure along a circumferential direction with a rotating connection on the support seat as an axis.

[0013] In some embodiments, the plurality of first support members and the connection components are connected at least respectively via gears and / or racks with various parameters.

[0014] In some embodiments, the connecting component is provided with an active cavity along the circumference of the first direction, and a connecting portion is provided on the second support member, and the connecting portion is provided at an end of the connecting component close to the rotating connection of the second support member on the support seat, and the connecting portion is suitable for being interlocked and connected with the active cavity, and is suitable for following the connecting component to move in at least the first direction.

[0015] In some embodiments, the end of the connecting portion has a curved structure, so that when the connecting portion moves following the connecting component, the height of the connecting portion in the first direction is always no greater than the height of the movable cavity in the first direction.

[0016] In some embodiments, the connection between the connecting assembly and the second support member is in the form of a rack and pinion connection.

[0017] In some embodiments, the support seat includes a first seat body and a second seat body, the first seat body and the second seat body are connected in a circumferential rotation along a first direction, the connecting assembly includes a first connecting member and a second connecting member, the first connecting member is located in the first seat body, the first connecting member is suitable for connecting to the first support member, the second connecting member is located in the second seat body, the second connecting member is suitable for connecting to the second support member, and the first connecting member and the second connecting member are slidingly connected along the first direction.

[0018] In some embodiments, the first support members are radially distributed along the circumference of the support seat; the second support members are radially distributed along the circumference of the support seat; the first support member includes a plurality of first support rods, and the plurality of first support rods are nested and cooperated with each other so that the first support member can be extended and retracted in the length direction; the second support member is provided with a rotatable support foot at one end away from the support seat, and the support foot has a support surface, and the support surface is suitable for increasing the contact area between the second support member and the ground.

[0019] A folding chair comprises a seat and any one of the above-mentioned simple folding support frames, wherein the seat is cooperatively connected with the first support member.

[0020] Compared with the prior art, the beneficial effect of the present application is that the simple folding support frame of the present application guides and limits the activities of the internal connecting components of the support base and guides and limits the activities of the first support member and the second support member connected thereto by utilizing the structure of the support base itself, thereby reducing the use of related parts, reducing costs and facilitating assembly, and reducing the overall volume, making it easier for users to carry. Since the structural strength of the support base itself is relatively high and generally higher than the structural strength of the connection achieved by setting parts, the simple folding support frame can have higher structural stability than traditional folding support frames. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the unfolded state according to a preferred embodiment of the present application.

[0022] Figure 2 It is a connection diagram of a first support member and a connection assembly according to a preferred embodiment of the present application.

[0023] Figure 3 It is a connection diagram of a second support member and a connection assembly according to a preferred embodiment of the present application.

[0024] Figure 4 It is a schematic diagram of the folded state according to a preferred embodiment of the present application.

[0025] Figure 5 It is an exploded view of a folded state according to a preferred embodiment of the present application.

[0026] Figure 6 It is a schematic structural diagram of a support base when it is rotatable according to a preferred embodiment of the present application.

[0027] Figure 7 It is a connection diagram when the second support member and the connection assembly are connected by a gear rack according to a preferred embodiment of the present application.

[0028] Figure 8 This is a diagram showing the appearance of a folding chair formed according to a preferred embodiment of the present application.

[0029] In the figure: 1. support seat; 11. limiting groove; 12. guide column; 13. sliding channel; 14. first seat body; 15. second seat body; 2. first support member; 21. gear; 22. first support rod; 3. second support member; 31. connecting part; 311. curved surface structure; 32. supporting foot; 321. supporting surface; 4. connecting assembly; 41. rack; 42. movable cavity; 421. limiting plate; 43. first connecting member; 44. second connecting member; 45. main structure; 46. sliding block structure; 6. chair seat. DETAILED DESCRIPTION

[0030] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0032] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0033] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0034] The present application is further described below with reference to the accompanying drawings:

[0035] like Figures 1 to 8 As shown, the present application provides a simple folding support frame, comprising:

[0036] Support seat 1;

[0037] A plurality of first support members 2, wherein the first support members 2 are rotatably connected to the upper portion of the support seat 1;

[0038] A plurality of second support members 3, wherein the second support members 3 are rotatably connected to the lower portion of the support base 1;

[0039] A connecting component 4, the connecting component 4 is slidably disposed in the support seat 1 along a first direction, the upper portion of the connecting component 4 is connected to the first support member 2, and the lower portion of the connecting component 4 is connected to the second support member 3, and the connecting component 4 is suitable for making the rotation of the first support member 2 and the rotation of the second support member 3 mutually linked;

[0040] In the present application, the rotation planes of the first support member 2 and the second support member 3 are both set to pass through the axis of the support seat 1. The first support member 2 and the second support member 3 can rotate to the same side of the support seat 1 under the action of the connecting component 4, thereby achieving folding.

[0041] It is worth noting that in the present application, the first support member 2 is usually used as a supporting structure in contact with the seat surface 6, and the second support member 3 is usually used as a supporting structure in contact with the ground. Considering the supporting stability of the second support member 3, when the angle between the first direction and each second support member 3 is equal, the highest structural stability can be obtained. Therefore, when the folding support frame of the present application is unfolded and placed on the ground, the first direction can be regarded as a vertical direction.

[0042] In some embodiments, the connection between the first support member 2 and the connection assembly 4 is in the form of a rack and pinion connection.

[0043] In some embodiments, a plurality of first support members 2 and the connection assembly 4 are connected via gears and racks with the same parameters. In this case, the deployment angles of the first support members 2 can be kept consistent.

[0044] In some embodiments, multiple first support members 2 and connecting components 4 are connected at least respectively by gears and / or racks with multiple parameters. The gear and rack connection can convert linear motion into rotational motion, and the difference in gear and / or rack parameters can change the transmission ratio between the two motions. Gear parameters generally include the number of teeth, module, pitch circle diameter, etc.

[0045] like Figure 2 In the embodiment shown, the specific implementation method of the gear rack connection can be that a rack 41 structure is set on the connecting component 4 along the first direction, and a gear 21 structure is set circumferentially on the first support member 2 with the rotating connection on the support seat 1 as the axis. When the connecting component 4 slides along the first direction, it can drive the first support member 2 to rotate synchronously with the rotating connection on the support seat 1 as the axis.

[0046] It can be understood that the connection form between the first support member 2 and the connecting component 4 can also be a worm gear connection or a gear screw connection, etc., by controlling the lifting and lowering of the worm and the screw, the worm wheel and the gear rotate. In these cases, if you want to make the expansion angle of the first support member 2 different, the parameters of the connecting component 4 usually cannot be adjusted, but the transmission ratio value can be changed by adjusting the relevant parameters of the first support member 2, that is, the worm wheel and the gear, such as the number of teeth, diameter, etc.

[0047] In some embodiments, the connecting component 4 is provided with an active cavity 42 along the circumference of the first direction, and the second support member 3 is provided with a connecting portion 31, and the connecting portion 31 is provided at an end of the connecting component 4 close to the rotating connection of the second support member 3 on the support seat 1, that is, the connecting portion 31 and an end of the second support member 3 outside the support seat 1 are respectively located on both sides of the rotating connection of the second support member 3 on the support seat 1, and the connecting portion 31 is suitable for being interlocked and connected with the active cavity 42, and is suitable for following the movement of the connecting component 4 in at least the first direction, and the connection between the connecting component 4 and the second support member 3 is maintained by the dynamic cooperation between the active cavity 42 and the connecting portion 31, to ensure that the two can move synchronously without jamming.

[0048] like Figure 3 In the illustrated embodiment, the formation of the active cavity 42 can be achieved by providing a limit plate 421 at the bottom of the connecting component 4. The limit plate 421 can be fixed to the bottom of the connecting component 4 by means of general fasteners such as bolts. There is a gap around the bottom of the connecting component 4 and the limit plate 421, and the gap can be used as the active cavity 42.

[0049] like Figure 6 In the illustrated embodiment, the active cavity 42 can be formed by setting two limit plates 421 at the bottom of the connecting component 4. The two limit plates 421 can be fixed to the bottom of the connecting component 4 by means of universal fixing parts such as gaskets. The two limit plates 421 can be limited by installing sleeves to form a gap, which can be used as the active cavity 42.

[0050] In some embodiments, the end of the connecting portion 31 has a curved structure 311, so that when the connecting portion 31 moves with the connecting component 4, the height of the connecting portion 31 in the first direction is always no greater than the height of the active cavity 42 in the first direction, ensuring that the connecting portion 31 can rotate unimpeded in the active cavity 42, thereby improving the smoothness of the movement.

[0051] like Figure 3 In the illustrated embodiment, a ball-like structure is preferably used at the end of the connection portion 31 . When a state change occurs between the connection portion 31 and the active cavity 42 , the connection portion 31 can always be located in the active cavity 42 and be pushed and limited by the limiting plate 421 .

[0052] It is worth noting that the support seat 1 also needs to set a limiting structure on the outermost side after the second support member 3 is unfolded, which can be a limiting groove 11 or other structural form. When the second support enters the limiting groove 11, it will not be able to continue to rotate, so as to avoid excessive rotation of the second support member 3 resulting in the inability to form support, so that the second support member 3 can form a stable support structure after rotation and unfolding.

[0053] like Figure 2 and 3 In the illustrated embodiment, at least one guide column 12 is provided in the support seat 1 along the first direction, and the connecting component 4 is slidably connected to the guide column 12 . The guide column 12 can make the sliding process of the connecting component 4 more stable and reduce the shaking of the connecting component 4 .

[0054] In some embodiments, at least one sliding channel 13 is provided in the support base 1 along the first direction, and the connecting component 4 is suitable for sliding along the sliding channel 13 .

[0055] In some embodiments, there are multiple sliding channels 13 , and the sliding channels 13 are arranged along the circumference of the support seat 1 . The sliding channels 13 are suitable for accommodating at least a portion of the connecting assembly 4 for connecting to the first support member 2 in a one-to-one manner.

[0056] like Figure 2 and 5 In the illustrated embodiment, part of the sliding channel 13 may be a cylindrical structure for accommodating the main structure 45 at the central axis position of the connecting assembly 4 .

[0057] like Figure 3 In the illustrated embodiment, part of the sliding channel 13 may be a prismatic structure for accommodating and guiding a slider structure 46 provided with a rack 41 on the connecting assembly 4 .

[0058] like Figure 1 In the illustrated embodiment, the first support members 2 are radially distributed along the circumference of the support seat 1 , so that the first support members 2 can be matched and connected with a larger seat surface 6 .

[0059] like Figure 1 In the illustrated embodiment, the first support members 2 are distributed at equal intervals along the circumference of the support seat 1, so that the force is more uniform and the structure is more stable.

[0060] like Figure 1 In the illustrated embodiment, the second support members 3 are radially distributed along the circumference of the support seat 1 , so that the second support members 3 can form a more stable support structure.

[0061] like Figure 1 In the illustrated embodiment, the second support members 3 are distributed at equal intervals along the circumference of the support seat 1, so that the force is more uniform and the structure is more stable.

[0062] like Figure 1and 5 In the illustrated embodiment, in order to ensure that the folding support frame can be folded smoothly and the volume after folding is small enough, the first support member 2 and the second support member 3 can be staggered in the circumferential direction of the first direction. When the first support member 2 is folded, it can be retracted into the gap between the two second support members 3 without structural interference, thereby making full use of the interval between the second support members 3 to accommodate the first support member 2, so as to minimize the folded volume.

[0063] like Figure 1 In the illustrated embodiment, the first support member 2 includes a plurality of first support rods 22 , and the plurality of first support rods 22 are nested and matched with each other, so that the first support member 2 can be extended and retracted in the length direction.

[0064] In some embodiments, an elastic snap-fit ​​structure, such as a spring buckle, is provided between the plurality of first support rods 22, which can limit the position after extending mutually, thereby achieving fixation of the first support member 2 after extension.

[0065] like Figures 1 to 3 In the illustrated embodiment, the second support member 3 is provided with a rotatable support foot 32 at one end away from the support seat 1, and the support foot 32 has a support surface 321, which is suitable for increasing the contact area between the second support member 3 and the ground, thereby further improving the stability of the support structure formed by the second support member 3.

[0066] In some embodiments, the contact area between the support surface 321 and the ground is larger than the contact area between the second support member 3 and the ground, and the contact area between the support surface 321 and the ground is larger than the contact area between the rest of the support foot 32 and the ground.

[0067] like Figure 6 In the illustrated embodiment, the support seat 1 includes a first seat body 14 and a second seat body 15, and the first seat body 14 and the second seat body 15 are connected in a circumferential rotation along a first direction. The connecting assembly 4 includes a first connecting member 43 and a second connecting member 44. The first connecting member 43 is located in the first seat body 14, and the first connecting member 43 is suitable for connecting to the first support member 2. The second connecting member 44 is located in the second seat body 15, and the second connecting member 44 is suitable for connecting to the second support member 3. The first connecting member 43 and the second connecting member 44 are connected in a sliding manner along the first direction. By setting the support seat 1 as a split structure, the first support member 2 and the second support member 3 can rotate relative to each other, thereby realizing the functional effect of a swivel chair.

[0068] In some embodiments, a gasket may be provided on the top of the second connecting member 44 to engage with the first connecting member 43 to limit the position and prevent separation.

[0069] The split structures of the connecting component 4 and the supporting base 1 can be used in combination with each other. When the connecting component 4 and the supporting base 1 are both split structures, the angle adjustment function of the first supporting member 2 and the rotation function of the folding supporting member can be realized simultaneously, which has higher practicality and better use experience.

[0070] like Figure 7 In the illustrated embodiment, the connection between the connecting assembly 4 and the second support member 3 is in the form of a rack and pinion connection, which enables the deployed second support member 3 to obtain a higher structural stability and reduces the probability of the second support member 3 shaking.

[0071] It can be understood that the gap on the rack on the connecting assembly 4 connected to the second supporting member 3 can be regarded as the movable cavity 42, and the single tooth of the gear on the second supporting member 3 can be regarded as the connecting member.

[0072] like Figure 8 As shown, the present application also provides a folding chair, comprising a seat surface 6 and a folding support frame of any of the above-mentioned embodiments, wherein the seat surface 6 is cooperatively connected with the first support member 2 , and the seat surface 6 can be sleeved with the top end of the first support member 2 .

[0073] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A simple folding support frame, characterized in that: include: Support seat; A plurality of first support members, wherein the first support members are rotatably connected to the upper portion of the support seat; A plurality of second support members, wherein the second support members are rotatably connected to the lower portion of the support seat; A connecting assembly, the connecting assembly is slidably disposed in the supporting seat along a first direction, the upper portion of the connecting assembly is connected to the first supporting member, the lower portion of the connecting assembly is connected to the second supporting member, and the connecting assembly is suitable for making the rotation of the first supporting member and the rotation of the second supporting member mutually linked; At least one guide column is provided in the support seat along the first direction, the connecting component is slidably connected to the guide column, at least one sliding channel is provided in the support seat along the first direction, and at least part of the connecting component is suitable for sliding along the sliding channel.

2. A simple folding support frame as claimed in claim 1, characterized in that: There are a plurality of sliding channels, and the sliding channels are arranged along the circumference of the support seat. The sliding channels are suitable for accommodating at least a portion of the connecting assembly for connecting to the first support member in a one-to-one manner.

3. A simple folding support frame as claimed in claim 1, characterized in that: The connection between the first support member and the connecting assembly is a rack and pinion connection. A rack structure is arranged on the connecting assembly along a first direction. The first support member is provided with a gear structure along a circumferential direction with a rotating connection on the supporting seat as an axis.

4. A simple folding support frame as claimed in claim 3, characterized in that: The plurality of first supporting members and the connecting components are connected at least respectively via gears and / or racks with various parameters.

5. The simple folding support frame according to claim 1, characterized in that: The connecting component is provided with an active cavity along the circumference of the first direction, and the second support member is provided with a connecting portion, which is arranged at an end of the connecting component close to the rotating connection of the second support member on the support seat, and the connecting portion is suitable for being engaged with the active cavity and suitable for following the connecting component to move in at least the first direction.

6. A simple folding support frame as claimed in claim 5, characterized in that: The end of the connecting portion has a curved surface structure, so that when the connecting portion moves following the connecting assembly, the height of the connecting portion in the first direction is always no greater than the height of the movable cavity in the first direction.

7. A simple folding support frame as claimed in claim 5, characterized in that: The connection between the connecting assembly and the second supporting member is in the form of a rack and pinion connection.

8. The simple folding support frame according to claim 1, characterized in that: The support seat includes a first seat body and a second seat body, the first seat body and the second seat body are connected in a circumferential rotation along a first direction, the connecting assembly includes a first connecting member and a second connecting member, the first connecting member is located in the first seat body, the first connecting member is suitable for connecting to the first support member, the second connecting member is located in the second seat body, the second connecting member is suitable for connecting to the second support member, and the first connecting member and the second connecting member are connected in a sliding manner along the first direction.

9. The simple folding support frame according to claim 1, characterized in that: The first support member is radially distributed along the circumference of the support seat; the second support member is radially distributed along the circumference of the support seat; the first support member includes a plurality of first support rods, and the plurality of first support rods are nested and cooperated with each other so that the first support member can be extended and retracted in the length direction; the second support member is provided with a rotatable support foot at one end away from the support seat, and the support foot has a support surface, and the support surface is suitable for increasing the contact area between the second support member and the ground.

10. A folding chair, characterized in that: It comprises a chair seat and the simple folding support frame according to any one of claims 1 to 9, wherein the chair seat is cooperatively connected with the first support member.

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