CN223503913U - Folding chair frame - Google Patents
Folding chair frameInfo
- Publication number
- CN223503913U CN223503913U CN202422976010.0U CN202422976010U CN223503913U CN 223503913 U CN223503913 U CN 223503913U CN 202422976010 U CN202422976010 U CN 202422976010U CN 223503913 U CN223503913 U CN 223503913U
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- rod
- bar
- chair frame
- pivoted
- support
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Abstract
一种折叠椅架，椅架包括左右对称的两侧支架以及位于前立面和后立面的前交叉支杆组和后交叉支杆组，各侧支架分别包括有前脚杆、后脚杆、靠背杆和坐杆；前交叉支杆组的上端与下端分别可转动枢接在坐杆前端和前脚杆的下端，后交叉支杆组的上端和下端分别可转动枢接在前脚杆上端和后脚杆的下端；坐杆依次枢接在前脚杆和后脚杆上；前脚杆从下至上向后倾斜，后脚杆从下至上向前倾斜，后脚杆的上端抵靠展开的前脚杆且与前脚杆形成枢接，前脚杆的上端枢设有一枢接座，靠背杆枢接在枢接座上。本实用新型的折叠椅架结构简单，操作便捷且支撑稳固。
A folding chair frame includes symmetrical side supports and front and rear cross bracing assemblies located on the front and rear facades, respectively. Each side support includes a front leg, a rear leg, a backrest, and a seat post. The upper and lower ends of the front cross bracing assemblies are rotatably pivotally connected to the front end of the seat post and the lower end of the front leg, respectively. The upper and lower ends of the rear cross bracing assemblies are rotatably pivotally connected to the upper end of the front leg and the lower end of the rear leg, respectively. The seat post is pivotally connected to the front and rear leg posts in sequence. The front leg tilts backward from bottom to top, and the rear leg tilts forward from bottom to top. The upper end of the rear leg abuts against the unfolded front leg and forms a pivot connection with it. A pivot seat is pivotally mounted on the upper end of the front leg, and the backrest is pivotally connected to the pivot seat. This folding chair frame has a simple structure, is easy to operate, and provides stable support.
Description
Technical Field
The present utility model relates to chairs, and more particularly to a folding chair frame.
Background
The folding chair has the characteristics of portability and foldability, is convenient to carry and saves space, and is widely applied to various public places or is convenient to carry as an outdoor chair. The common folding chairs comprise a chair frame and chair cloth connected with the chair frame, the chair frame can be folded integrally, a backrest is also arranged in a plurality of folding chairs, and a backrest rod and backrest cloth which can be unfolded and folded simultaneously are added in the chair frame.
For the folding chairs with backrest rods, most of the backrest is in a fixed form, and the backrest rods are matched with the chair frame to be unfolded and folded integrally. In some folding chairs with backrests, the chair frame comprises two back rest bars at the back side, the back rest bars are generally upright bars, the back rest bars can only be fixed in length and angle, in order to reduce the length and the leaning inclination of the back rest bars, part of the chair frame designs the back rest bars to be connected with a back rest bar on a support bar at the back side, such as a backrest rotating folding chair of China patent application No. 201820633896.0 or a movable back folding chair which can be completely folded in China patent application No. 202121343310.5, a folding chair frame with an adjustable backrest of China patent application No. 202320143993.2, and the like. In these conventional folding chairs, a backrest rod is rotatably connected to the upper end of a support rod (rear leg rod) located at the rear side, the support rod is positioned as a rear support rod, the rear support rod is used as a rear support of a chair frame, and the upper section of part of the rear support rod forms a backrest section. For the folding chair, as the backrest rod is connected to the rear supporting rod, when a user leans back, the backrest rod is stressed by the force applied to the back, and the gravity center of the chair moves backwards at the moment, so that the gravity center is unstable easily, and in addition, in the leaned back state, the sitting and leaning are unstable, the use experience is influenced, and a certain potential safety hazard is also easily caused. In addition, when the part of folding chair is folded, the rear supporting rod is required to be used as the telescopic pipe in order to meet the telescopic abdication (the rod piece is folded and closed when the folding chair is compliant), so that the structure is complicated, and the cost is increased.
Disclosure of utility model
The utility model aims to provide a folding chair frame which is simple in structure, convenient to operate and stable to support.
In order to achieve the above object, the solution of the present utility model is:
The folding chair frame comprises two side brackets which are bilaterally symmetrical, a front cross supporting rod group and a rear cross supporting rod group which are positioned on a front elevation and a rear elevation, wherein each side bracket comprises a front foot rod, a rear foot rod, a backrest rod and a seat rod, the upper end and the lower end of the front cross supporting rod group are respectively pivoted at the front end of the seat rod and the lower end of the front foot rod in a rotatable manner, the upper end and the lower end of the rear cross supporting rod group are respectively pivoted at the upper end of the front foot rod and the lower end of the rear foot rod in a rotatable manner, the seat rod is sequentially pivoted on the front foot rod and the rear foot rod, the front foot rod is inclined from bottom to top, the rear foot rod is inclined from bottom to top, the upper end of the rear foot rod is abutted against the unfolded front foot rod and pivoted with the front foot rod, the upper end of the front foot rod is pivoted with a pivot seat, and the backrest rod is pivoted on the pivot seat. Further, the pivot seat is provided with a connecting groove for the pivoting of the backrest rod, and the connecting groove is provided with an abutting surface for enabling the backrest rod to be supported in a backward inclined mode.
Further, a straight section with a smaller elevation angle is formed in the lower section of the backrest rod after bending.
Further, the front leg is bent forward in the portion of the upper end of the junction with the rear leg to form an upper support section with a reduced elevation angle.
Further, a front supporting rod is arranged in the chair frame, the upper end of the front supporting rod is pivoted at the front end of the sitting rod, and the lower end of the front supporting rod can be connected to the front foot rod in a sliding manner.
Further, the chair frame is also provided with an armrest assembly, the armrest assembly comprises an armrest rod and an armrest supporting rod, the armrest supporting rod extends upwards from the upper end of the front supporting rod to form, the upper end of the armrest supporting rod is pivoted and supported below the front end of the armrest rod, the armrest rod is positioned above the sitting rod and staggered with the sitting rod, and the rear end of the armrest rod is pivoted to the front foot rod or the rear foot rod.
Further, the lower end of the front support rod is pivoted on a sliding sleeve which can slide on the front foot rod, the front end of the sitting rod is pivoted with a support seat, the upper end of the front support rod is arranged on the support seat in a penetrating way, the upper end of the front cross support rod group is pivoted on the support seat in a rotatable way, and the front end of the sitting rod is supported in the support seat when the chair frame is unfolded.
Further, the upper end of the rear foot rod is connected with a supporting piece, a supporting groove is formed in the supporting piece, the front foot rod is obliquely supported in the supporting groove when the chair frame is unfolded, the rear ends of the grab bars are respectively pivoted on the side faces of the supporting piece, a pair of symmetrical connecting bars are respectively pivoted on the supporting pieces, the upper ends of the rear foot rods and the front foot rod form a pivot joint through the connecting bars, one ends of the connecting bars are pivoted on the supporting piece, the other ends of the connecting bars are pivoted on the front foot rod, and the connecting bars connected to the front foot rod rotate upwards along with the front foot rod when the chair frame is folded.
Further, the upper end of the rear foot rod is connected with a supporting piece, a supporting groove is formed in the supporting piece, the front foot rod is pivoted in the supporting piece and is obliquely supported in the supporting groove when the chair frame is unfolded, the rear ends of the handrail rods are respectively pivoted on the front foot rod and are positioned above the supporting piece, the bottom surfaces of the handrail rods are respectively connected with an adjusting groove block, a sliding groove is formed in the adjusting groove blocks along the length direction of the handrail rods, and the upper ends of the handrail support rods are pivoted in the sliding groove to slide.
The back end of the sitting rod is pivoted on the inner side surface of a connecting sleeve, the connecting sleeve is connected on the rear foot rod and positioned below the supporting piece, a first limiting sleeve connected on the rear foot rod is further arranged above the connecting sleeve, and a second limiting sleeve positioned below the supporting seat is further connected on the front supporting rod.
By adopting the structure, the backrest rod which can be stably supported and is leaning on and comfortable is matched in the folding chair frame, the whole chair frame is more stable in the use process, the user experience is greatly improved, the length of the front foot rod or the rear foot rod is not required to be increased in the chair frame, the folding chair frame can be smoothly and conveniently unfolded, and the chair frame is simple in structure and convenient to use.
Drawings
FIG. 1 is a schematic perspective view of a first embodiment of the present utility model;
FIG. 2 is a schematic diagram illustrating a semi-folded state according to a first embodiment of the present utility model;
FIG. 3 is a schematic view illustrating a folded state of the first embodiment of the present utility model;
fig. 4 is a schematic perspective view of a second embodiment of the present utility model.
Detailed Description
In order to further explain the technical scheme of the utility model, the utility model is explained in detail by specific examples.
Referring to fig. 1 to 3, the utility model discloses a folding chair frame, which comprises bilateral brackets, a front cross supporting rod group and a rear cross supporting rod group, wherein the bilateral brackets are bilaterally symmetrical, the front cross supporting rod group and the rear cross supporting rod group are positioned on a front elevation and a rear elevation, and each side bracket comprises a front foot rod 1, a rear foot rod 2, a backrest rod 3 and a sitting rod 4. The upper end and the lower end of the front cross support rod group are respectively pivoted at the front end of the sitting rod 4 and the lower end of the front foot rod 1 in a rotatable manner, and the upper end and the lower end of the rear cross support rod group are respectively pivoted at the upper end of the front foot rod 1 and the lower end of the rear foot rod 2 in a rotatable manner. In this example, the front cross strut set includes two crossed front struts 51, the rear cross strut set may include two crossed rear struts 52, a support seat 41 is pivotally connected to the front end of the sitting rod 4, the upper ends of the two front struts 51 are rotatably pivoted to the support seat 41, and the lower ends of the two front struts 51 are rotatably pivoted to the lower ends of the front foot rods 1 respectively. In this example, a pivot seat 11 is pivotally disposed at the upper end of the front foot bar 1, the upper ends of the two rear support bars 52 are respectively pivotally connected to the pivot seat 11 in a rotatable manner, and the lower ends of the two rear support bars 52 are respectively pivotally connected to the lower ends of the rear foot bars 2 in a rotatable manner.
In order to make the front end of the chair frame more stable, a front support rod 6 may be further provided in the chair frame, the upper end of the front support rod 6 is pivoted to the front end of the sitting rod 4, the lower end of the front support rod 6 may be slidably connected to the front foot rod 1, the lower end of the front support rod 5 may be pivoted to a sliding sleeve 61 that may slide on the front foot rod 1, and the lower end pivot point of the front support rod 51 is located below the sliding sleeve 61, so as to avoid interference. The lower end of the front foot rod 1 can be further provided with a third limit sleeve 62 which is positioned below the sliding sleeve 61 and used for preventing the sliding sleeve 61. The rear end of the sitting bar 6 is pivoted on the front foot bar 1 and the rear foot bar 2 in turn, and the front end of the sitting bar 4 is pivoted on the supporting seat 41 and can be supported in the supporting seat 41 when the chair frame is unfolded.
In this embodiment, the chair frame may further be provided with an armrest assembly, where the armrest assembly includes an armrest rod 7 and an armrest supporting rod 63, the armrest supporting rod 63 may directly extend upward from the upper end of the front supporting rod 6, the upper end of the armrest supporting rod 63 is pivotally connected to and supported below the front end of the armrest rod 4, the upper end of the front supporting rod 4 is disposed on the supporting seat 41, the armrest supporting rod 63 may be located above the supporting seat 41 and extends upward after being bent, so that the armrest rod 7 is located above the sitting rod 4 and is staggered from the sitting rod 4, thereby avoiding interference during folding. The rear end of the grab bar 7 can be pivotally connected to the front foot bar 1 or the rear foot bar 2 (refer to the first embodiment and the second embodiment).
In the utility model, the front foot bar 1 is inclined from bottom to top and the rear foot bar 2 is inclined from bottom to top to front, the upper end of the rear foot bar 2 can be used for abutting against the unfolded front foot bar 1 and forming pin joint with the front foot bar 1, a pivot joint between the front foot bar 1 and the rear foot bar 2 is positioned below the pivot seat 11, a triangular support is formed between the front foot bar 1 and the rear foot bar 2 when the chair frame is unfolded and used, the rear foot bar 2 forwards supports the front foot bar 1, and the upper end of the rear foot bar 2 and the front foot bar 1 form pin joint, so that the chair frame can form a linkage relation when being folded and can be folded together. Then, the backrest rod 3 is pivoted on the pivot seat 11 positioned at the upper end of the front foot rod 1, so that the support of the backrest rod 3 can be more stable in the use process, and the chair frame can be smoothly and conveniently unfolded without increasing the length of the front foot rod 1 or the rear foot rod 2.
Specifically, the pivot seat 11 is provided with a connecting slot 111 for pivoting the backrest rod 3, and an abutment surface (not shown) for supporting the backrest rod 3 obliquely backward is formed in the connecting slot 111, so that the backrest rod 3 can be stably and reliably placed when in use. The pivot seat 11 may further be provided with a connecting portion 112, and the upper end of the front foot bar 1 may be sleeved and pivoted on the connecting portion 112, and the upper end of the rear strut 52 in the rear cross strut set may also be pivoted on the side surface of the connecting portion 112.
Further, a straightening section 31 with a reduced elevation angle can be formed in the lower section of the backrest rod 3 after bending, so that the upper section of the backrest rod 3 can be better abutted against the neck of the shoulder of a human body, the lower section can be more attached to the waist, and the human engineering is more met. The front foot bar 1 can also be bent forward according to design requirements in the part of the upper end of the joint with the rear foot bar 2 to form an upper support section 12 with a reduced elevation angle, so that the backrest bar 2 is connected forward.
Referring to fig. 1 to 3, in the present embodiment, a support member 21 is connected to the upper end of the rear foot bar 2, so that the upper end of the rear foot bar 2 is sleeved and pivoted in the support member 21, a support slot 211 with an opening facing the direction of the front foot bar 1 is formed on the support member 21, and the front foot bar 1 can be obliquely supported in the support slot 211 when the chair frame is unfolded. The rear ends of the grab bars 7 can be pivoted on the side surfaces of the supporting members 21, respectively, and in this embodiment, the rear ends of the grab bars 7 are pivoted on the outer side surfaces of the supporting members 21 and staggered with the sitting bars 4 positioned on the inner sides of the front foot bars 1. The upper end of the rear foot bar 1 and the front foot bar 1 can form a pin joint through a connecting bar 22, a pair of symmetrical connecting bars 22 are also pin-jointed on each supporting piece 21, one end of each connecting bar 22 is pin-jointed on the supporting piece 21, the other end of each connecting bar 22 is pin-jointed on the upper section of the front foot bar 1, and the connecting bars 22 connected on the front foot bar 1 rotate upwards along with the front foot bar 1 when the chair frame is folded (shown in combination with fig. 2 and 3). The connecting strip 22 can keep the front foot bar 1 and the rear foot bar 2 in linkage when folding.
When the folding chair frame needs to be folded, the front and rear sets of crossed supporting rod sets are collected and leaned, the combination of the front crossed supporting rod sets and the rear crossed supporting rod sets drives the two side supports to be collected inwards, when the upper ends of the two front supporting rods 51 in the front crossed supporting rod sets move upwards, the sliding blocks 61 at the bottom ends of the handrail supporting rods 6 slide upwards on the front foot rods 1, the upward movement of the handrail supporting rods 6 drives the front ends of the handrail rods 7 to be lifted (as shown in fig. 2), the front foot rods 1 are collected and leaned towards the rear foot rods 2, the collection and leaning of the whole folding chair frame are finally completed, and the minimum volume folding is achieved. When the folding chair frame is used, the chair frame is movably connected with chair cloth (not shown in the figure), the chair cloth can comprise sitting cloth and backrest cloth, a sitting cloth forming seat part is connected between the two sitting rods 4, a backrest cloth forming backrest part is connected between the two backrest rods 3, the sitting cloth and the backrest cloth can be separated or connected into a whole, and the chair cloth can be folded and unfolded along with the chair frame.
As shown in fig. 4, in the second embodiment of the present utility model, the main difference between the first embodiment and the upper end of the rear leg bar 2 is that the pivoting relationship between the front leg bar 1 is different, and the mating relationship of the armrest 7 is changed when the armrest is folded. In this embodiment, the upper end of the rear leg bar 2 is connected with a supporting member 21, and the supporting member 21 is also formed with a supporting groove, but the front leg bar 1 can be directly pivoted in the supporting member 21, the front leg bar 1 is obliquely supported on the supporting groove of the supporting member 21 when the chair frame is unfolded, and the rear ends of the grab bars 7 are respectively pivoted on the upper section of the front leg bar 1 and above the supporting member 21. Meanwhile, the bottom surface of each handrail 7 is respectively connected with an adjusting groove block 71, a sliding groove 711 is arranged in the adjusting groove block 71 along the length direction of the handrail, and the upper end of the handrail supporting rod 63 is pivoted in the sliding groove 711 to slide. The two side surfaces of the adjusting groove block 71 can be provided with a bar groove 712, and a pin shaft (not shown) can pass through the bar groove and the upper end of the handrail support rod at the same time, and the pin shaft slides in the bar groove to drive the handrail support rod 63 to slide back and forth in the chute 711 together with the front support rod 6.
In this embodiment, the rear end of the sitting rod 4 may be pivotally connected to the inner side of a connecting sleeve 81, the connecting sleeve 81 is connected to the rear foot rod 2 and located below the supporting member 21, a first limiting sleeve 82 connected to the rear foot rod 2 is further disposed above the connecting sleeve 81, and a second limiting sleeve 64 may be further connected to the front support rod 6 and located below the supporting seat 41. When the chair frame is folded, the two front struts 51 of the front cross strut group are combined and folded, the sliding sleeve 61 at the lower end of the front support rod 6 is driven to slide upwards on the front foot rod 1, the handrail rod 7 is driven to fold upwards, and after the sliding sleeve slides to a certain height, the handrail rod 63 slides backwards in the sliding groove 711, so that the handrail rod 7, the sitting rod 4 and the handrail support rod 63 are folded together with the whole of the front support rod 6.
The above examples and drawings are not intended to limit the form or form of the present utility model, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present utility model.
Claims (10)
1. The folding chair frame comprises two side brackets which are bilaterally symmetrical, a front cross supporting rod group and a rear cross supporting rod group which are positioned on a front elevation and a rear elevation, wherein each side bracket comprises a front foot rod, a rear foot rod, a backrest rod and a sitting rod, the upper end and the lower end of the front cross supporting rod group are respectively pivoted at the front end of the sitting rod and the lower end of the front foot rod in a rotatable manner, the upper end and the lower end of the rear cross supporting rod group are respectively pivoted at the upper end of the front foot rod and the lower end of the rear foot rod in a rotatable manner, the sitting rod is sequentially pivoted on the front foot rod and the rear foot rod, the front foot rod is inclined from bottom to top, the rear foot rod is inclined from bottom to top, the upper end of the rear foot rod is abutted against the unfolded front foot rod and pivoted with the front foot rod, the upper end of the front foot rod is pivoted with a pivot seat, and the backrest rod is pivoted on the pivot seat.
2. The folding chair frame of claim 1 wherein the pivot base has a connecting slot for pivotally connecting the back rest bar, the connecting slot having an abutment surface for supporting the back rest bar in a rearward inclined position.
3. The folding chair frame of claim 1 wherein the lower section of the back rest bar is curved to form a straight section with a reduced elevation angle.
4. A folding chair frame as claimed in claim 1 or 3, wherein the front leg is bent forward in the portion of the upper end of the connection with the rear leg to form an upper support section with a reduced elevation angle.
5. The folding chair frame of claim 1 wherein a front support bar is further provided, the upper end of the front support bar is pivotally connected to the front end of the sitting bar, and the lower end of the front support bar is slidably connected to the front foot bar.
6. A folding chair frame as in claim 5, wherein the chair frame is further provided with a handrail assembly, the handrail assembly comprises a handrail rod and a handrail support rod, the handrail support rod extends upwards from the upper end of the front support rod, the upper end of the handrail support rod is pivoted and supported below the front end of the handrail rod, the handrail rod is positioned above the sitting rod and staggered with the sitting rod, and the rear end of the handrail rod is pivoted to the front foot rod or the rear foot rod.
7. The folding chair frame of claim 6 wherein the lower end of the front support bar is pivotally connected to a sliding sleeve that slides over the front foot bar, the front end of the seat bar is pivotally connected to a support base, the upper end of the front support bar is threaded onto the support base, the upper ends of the front cross strut sets are pivotally connected to the support base, and the front end of the seat bar is supported in the support base when the chair frame is unfolded.
8. The folding chair frame of claim 7 wherein the upper end of the rear leg bar is connected with a support member, the support member is formed with a support slot, the front leg bar is supported in the support slot in an inclined manner when the chair frame is unfolded, the rear ends of the grab bars are respectively pivoted on the side surfaces of the support member, a pair of symmetrical connecting bars are respectively pivoted on the support members, the upper ends of the rear leg bar and the front leg bar are pivoted through the connecting bars, one end of each connecting bar is pivoted on the support member, the other end of each connecting bar is pivoted on the front leg bar, and the connecting bars connected to the front leg bar rotate upwards along with the front leg bar when the chair frame is folded.
9. The folding chair frame of claim 7 wherein the upper end of the rear leg bar is connected with a supporting member, a supporting groove is formed on the supporting member, the front leg bar is pivoted in the supporting member and is obliquely supported in the supporting groove when the chair frame is unfolded, the rear ends of the handrail bars are respectively pivoted on the front leg bar and are positioned above the supporting member, the bottom surfaces of the handrail bars are respectively connected with an adjusting groove block, a sliding groove is formed in the adjusting groove blocks along the length direction of the handrail bars, and the upper ends of the handrail support bars are pivoted in the sliding groove to slide.
10. The folding chair frame of claim 9 wherein the two side surfaces of the adjusting groove block are provided with a strip groove, a pin shaft passes through the strip groove and the upper end of the armrest supporting rod at the same time, the rear end of the sitting rod is pivoted on the inner side surface of a connecting sleeve, the connecting sleeve is connected on the rear foot rod and is positioned below the supporting piece, a first limiting sleeve connected on the rear foot rod is further arranged above the connecting sleeve, and a second limiting sleeve is further connected on the front supporting rod and positioned below the supporting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422976010.0U CN223503913U (en) | 2024-12-04 | 2024-12-04 | Folding chair frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422976010.0U CN223503913U (en) | 2024-12-04 | 2024-12-04 | Folding chair frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223503913U true CN223503913U (en) | 2025-11-04 |
Family
ID=97515522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422976010.0U Active CN223503913U (en) | 2024-12-04 | 2024-12-04 | Folding chair frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223503913U (en) |
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2024
- 2024-12-04 CN CN202422976010.0U patent/CN223503913U/en active Active
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