CN218889458U - Foldable chair frame and foldable chair - Google Patents

Abstract

The utility model belongs to the technical field of furniture articles and specifically relates to a but folding chair frame and folding chair, but folding chair frame, including a pair of side support frame that is relative setting and set up in order to control two side support frame and draw in or expand cross folding mechanism between two side support frames, each side support frame includes first stabilizer blade pole, second stabilizer blade pole and the bracing piece between fixed connection first stabilizer blade pole and the second stabilizer blade pole, cross folding mechanism includes that a pair of middle part is the cross connecting rod that articulates each other and sets up, rotary rod and the seat support pole that is located the rotary rod top, and the middle part fixed connection of rotary rod is in the lower extreme of cross connecting rod, and the middle part fixed connection of seat support pole is in the upper end of cross connecting rod, and the rotary rod rotates to be connected between first stabilizer blade pole and second stabilizer blade pole, and the rotary rod is located the below of bracing piece, the side support frame is provided with two the restriction cross connecting rod relative pivoted spacing subassembly. The folding chair has the effect of improving the use comfort of the folding chair.

Description

Foldable chair frame and foldable chair

Technical Field

The application relates to the technical field of furniture articles, in particular to a foldable chair frame and a foldable chair.

Background

With the rapid development of national economy in China, the living standard of people is increasingly improved, the requirements on household articles such as seats and the like are also higher and higher, meanwhile, people use leisure, travel on vacation, camping or seaside waves are also more and more, and no matter what form, people sit on the chairs for rest after entertainment, so that the combination of entertainment and leisure is necessary.

Therefore, the chair with the folding chair, light and stackable functions is convenient to carry and saves space in the market. Originally intended for military use. The system is commonly used in various training institutions, schools at all levels, public places, hospitals, restaurants, hotels, companies, families and other places.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: the existing folding chair adopts a front-back double-cross rotary rod structure, after the folding chair frame is opened, the front and back of the seat bottom are respectively provided with a fork-shaped structure, the fork-shaped structure positioned at the front end of the seat bottom can be in direct contact with the lower leg of a human body, and prevent the feet of the human body from extending into the seat bottom, so that the comfort level of the use is reduced, and further improvement is needed.

Disclosure of Invention

In order to improve the comfort of the folding chair, one of the purposes of the application is to provide a foldable chair frame.

The application provides a collapsible chair frame adopts following technical scheme:

the utility model provides a collapsible chair frame, includes a pair of side support frame that is relative setting and sets up the cross folding mechanism in order to control two side support frames to draw in or expand between two side support frames, each side support frame includes first stabilizer blade pole, second stabilizer blade pole and the bracing piece between fixed connection first stabilizer blade pole and the second stabilizer blade pole, cross folding mechanism includes that a pair of middle part is the cross connecting rod, rotary rod and the seat support pole that are located the rotary rod top that articulated each other set up, the middle part fixed connection of rotary rod is in the lower extreme of cross connecting rod, the middle part fixed connection of seat support pole is in the upper end of cross connecting rod, the rotary rod rotates to be connected between first stabilizer blade pole and second stabilizer blade pole, the rotary rod is located the below of bracing piece, side support frame is provided with two the restriction cross connecting rod relative pivoted spacing subassembly.

Through adopting above-mentioned technical scheme, because the middle part position of rotary rod is fixed with the lower extreme fixed connection of cross connecting rod, and the middle part position of seat support pole is fixed with the upper end of cross connecting rod, make the cross connecting rod be the I-shaped setting, and the rotary rod rotates to be connected in first stabilizer blade pole and second stabilizer blade pole, therefore the cross structure that makes two cross connecting rods formation is located the middle part position department of side support frame, make cross structure contract in seat bottom relatively, on the one hand, reduce the cross connecting rod to the blocking of user's shank, improve the use comfort of folding chair, on the other hand, make folding chair expand the back, cross structure is in a relative hidden state, the user can not directly see fork structure, it is comparatively pleasing to the eye.

When the chair frame is required to be folded, the limit component is released from the rotation limit of the crossed connecting rods, and the chair seat rod is forced to enable the upper parts of the two crossed connecting rods to rotate and fold towards the direction of approaching to each other, so that the two side support frames are folded.

Preferably, the limiting component comprises a reinforcing rib part arranged between the upper part of the cross connecting rod and the first support leg rod/the second support leg rod, the reinforcing rib part comprises a first reinforcing rod rotationally connected with the first support leg rod, a second reinforcing rod rotationally connected with the second support leg rod, a penetrating rod rotationally penetrating through the upper part of the cross connecting rod, a first inclined rod fixedly connected between the first reinforcing rod and the penetrating rod and a second inclined rod fixedly connected between the second reinforcing rod and the penetrating rod, the first reinforcing rod, the second reinforcing rod and the penetrating rod are all parallel to the supporting rod, and the first reinforcing rod and the second reinforcing rod are all positioned above the supporting rod.

Through adopting above-mentioned technical scheme, through setting up the strengthening rib spare, on the one hand, carry out an expansion and draw in folding movable size spacing to whole folding chair frame, on the other hand, this folding chair frame expands the back, forms triangle-like atress frame between crossing link, seat support pole and the diagonal bar, improves folding chair frame's structural strength to improve the bearing capacity of folding chair frame after expanding.

Preferably, the cross connecting rod is provided with a through hole in a penetrating way, the cross connecting rod is provided with a first wear-resistant bushing fixedly penetrating through the through hole, and the penetrating rod penetrates through the first wear-resistant bushing.

Through adopting above-mentioned technical scheme, set up first wear-resisting bush, reduce the possibility of wearing pole and cross connecting rod direct contact, improve the durability of wearing pole and cross connecting rod.

Preferably, the first support leg rod and the second support leg rod are fixedly connected with mounting sleeves, the mounting sleeves are located above the support rods, the end portions of the first reinforcing rods are rotatably inserted into the mounting sleeves arranged on the first support leg rod, and the end portions of the second reinforcing rods are rotatably inserted into the mounting sleeves arranged on the second support leg rod.

Through adopting above-mentioned technical scheme, first stabilizer blade pole and second stabilizer blade pole all are provided with the installation sleeve pipe, provide for first stiffener and second stiffener and rotate the installation carrier, the assembly of the strengthening rib spare of being convenient for.

Preferably, the end parts of the first reinforcing rod and the second reinforcing rod are coaxially and fixedly sleeved with a second wear-resistant bushing, and the second wear-resistant bushing is rotatably inserted into the mounting sleeve.

Through adopting above-mentioned technical scheme, set up the second wear-resisting bush, reduce first stiffener/second stiffener and installation sheathed tube direct contact's possibility, improve first stiffener, second stiffener and installation sheathed tube durability.

Preferably, the limiting assembly further comprises a limiting support sleeve fixedly connected to the seat rod, the limiting support sleeve is provided with a clamping portion, and the clamping portion is used for being clamped on the upper peripheral wall of the mounting sleeve in the unfolded state of the foldable seat frame.

Through adopting above-mentioned technical scheme, spacing support sleeve is in folding chair frame expansion state, and the screens portion joint on the spacing support sleeve plays the reinforcing auxiliary role of bearing atress and reduces the side support frame and take place the possibility of rocking about.

Preferably, the lower part of first stabilizer blade pole is close to one side protrusion that the second stabilizer blade pole is fixed with first installation pole, the lower part of second stabilizer blade pole is close to one side protrusion that the first stabilizer blade pole is fixed with the second installation pole, and the hole has all been seted up to the terminal surface of first installation pole and second installation pole, and first installation pole, second installation pole and rotary rod coaxial setting, the rotary rod is located between first installation pole and the second installation pole, and the tip of rotary rod is provided with the rotation and inserts the third wear-resisting bush of locating the hole.

Through adopting above-mentioned technical scheme, first stabilizer blade pole, second stabilizer blade pole are provided with first installation pole and second installation pole respectively, provide the installation base member for the rotary rod, and the rotary rod is provided with the third wear-resisting bush, reduces first installation pole/second installation pole and rotary rod direct contact's possibility, improves the durability of first installation pole, second installation pole and rotary rod.

Preferably, the side support frame further comprises a grab bar fixedly connected between the upper parts of the first support leg bar and the second support leg bar, and the grab bar is positioned above the support bar.

By adopting the technical scheme, the hand rest is provided for leaning and placing the hands of a human body.

Preferably, the lower peripheral walls of the first mounting rod and the second mounting rod are provided with wear-resistant foot pads in a protruding mode.

Through adopting above-mentioned technical scheme, be provided with wear-resisting callus on sole, improve first installation pole and second installation pole durability.

In order to improve the comfort of the folding chair, a second object of the present application is to provide a folding chair.

A foldable chair comprises a foldable chair frame, seat cloth arranged on two seat rods and backrest cloth arranged on a second support leg rod and positioned above the seat cloth.

In summary, the utility model has the following beneficial effects:

1. the cross structure is positioned in the middle of the side support frame, so that the cross structure is relatively contracted at the bottom of the seat, on one hand, the blocking of the cross connecting rod to the legs of a user is reduced, the use comfort of the folding chair is improved, and on the other hand, after the folding chair is opened, the cross structure is in a relatively hidden state, the user cannot directly see the fork-shaped structure, and the folding chair is attractive;

2. the reinforcing rib piece is arranged, the whole folding chair frame is unfolded and folded to limit the movable size, after the folding chair frame is unfolded, a triangle-like stressed frame is formed among the cross connecting rod, the chair seat rod and the diagonal rod, and the structural strength of the folding chair frame is improved, so that the bearing capacity of the unfolded folding chair frame is improved.

Drawings

FIG. 1 is a schematic view showing an unfolded state structure of a foldable chair frame;

FIG. 2 is a schematic view of the structure of a side support;

FIG. 3 is a schematic exploded view of the structure of the grab rail;

FIG. 4 is a schematic view of the cross-folding mechanism;

FIG. 5 is a schematic view of the structure of the spacing support sleeve;

FIG. 6 is a schematic view showing a folded state structure of a foldable chair frame;

fig. 7 is a schematic view of a structure of a foldable chair.

In the figure, 1, a side support frame; 11. a first leg bar; 111. a first mounting bar; 12. a second leg bar; 121. a second mounting bar; 122. a hole; 13. a support rod; 14. a grab rail; 141. a first connecting rod; 142. a second connecting rod; 143. a rod; 15. a back rest lever; 16. wear-resistant foot pad; 17. installing a sleeve; 2. a cross folding mechanism; 21. a cross connecting rod; 211. a first wear-resistant bushing; 22. a rotating rod; 221. a third wear-resistant bushing; 23. a seat post; 3. a limit component; 31. a limit support sleeve; 311. a clamping part; 312. a U-shaped clamping groove; 32. a reinforcing rib member; 321. a first reinforcing rod; 322. a second reinforcing rod; 323. penetrating the rod; 324. a first diagonal bar; 325. a second diagonal bar; 326. a second wear-resistant bushing; 4. seat cloth; 5. and (5) backing cloth.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-7.

Example 1:

the embodiment of the application discloses a collapsible chair frame, refer to fig. 1, and the collapsible chair frame is a metal folding frame, including a pair of side support frames 1 that are relative setting and set up in order to control the cross folding mechanism 2 that two side support frames 1 draw in or expand between two side support frames 1.

Referring to fig. 1 and 2, each side support 1 includes a first leg bar 11, a second leg bar 12, a support bar 13, and a grab bar 14, the first leg bar 11 and the second leg bar 12 are vertically disposed, the support bar 13 and the grab bar 14 are horizontally disposed, a first mounting bar 111 is protruded and fixed at a side of a lower portion of the first leg bar 11 near the second leg bar 12, a second mounting bar 121 is protruded and fixed at a side of a lower portion of the second leg bar 12 near the first leg bar 11, and wear-resistant foot pads 16 are protruded and arranged at lower peripheral walls of the first mounting bar 111 and the second mounting bar 121, specifically, the wear-resistant foot pads 16 are rubber pads.

Referring to fig. 1 and 3, the grab bar 14 is positioned above the support bar 13 and the length direction of the grab bar 14 is parallel to the length direction of the support bar 13, the support bar 13 is fixedly connected between the middle portions of the first and second leg bars 11 and 12, and the grab bar 14 is fixedly connected between the upper portions of the first and second leg bars 11 and 12. In this embodiment, the structures of the grab bar 14 and the support bar 13 are the same, and the structure of the grab bar 14 is described, where the grab bar 14 includes a first connecting rod 141 with one end fixedly connected to the first supporting leg 11 and a second connecting rod 142 with one end fixedly connected to the second supporting leg 12, the other end of the first connecting rod 141 is provided with a mounting hole, the other end of the second connecting rod 142 is fixedly protruded with a plug rod 143 inserted into the mounting hole, and the first connecting rod 141 is provided with a screw in threaded connection with the plug rod 143.

A backrest rod 15 is fixedly connected to the upper portion of the second leg bar 12. The first support leg rod 11 and the second support leg rod 12 are fixedly connected with a mounting sleeve 17, the axial direction of the mounting sleeve 17 is parallel to the length direction of the grab bar 14, and the mounting sleeve 17 is positioned between the grab bar 14 and the support bar 13.

Referring to fig. 1, 3 and 4, the cross folding mechanism 2 includes a pair of cross links 21, a rotating rod 22 and a seat rod 23, the middle parts of which are hinged to each other, the seat rod 23 and the rotating rod 22 are parallel, the seat rod 23 is located above the mounting sleeve 17, the middle part of the rotating rod 22 is fixedly connected to the lower end of the cross links 21, the middle part of the seat rod 23 is fixedly connected to the upper end of the cross links 21, and the rotating rod 22, the first mounting rod 111 and the second mounting rod 121 are coaxially arranged, and the rotating rod 22 is located between the first mounting rod 111 and the second mounting rod 121. The end surfaces of the first mounting rod 111 and the second mounting rod 121, which are close to each other, are provided with holes 122, the two ends of the rotating rod 22 are coaxially and fixedly sleeved with third wear-resistant bushings 221, the third wear-resistant bushings 221 are inserted into the holes 122, and the third wear-resistant bushings 221 are plastic bushings.

Referring to fig. 2 and 5, the side support 1 is provided with a limiting assembly 3 for limiting the relative rotation of the two cross links 21, and the limiting assembly 3 includes a limiting support sleeve 31 and a reinforcing rib member 32. The limiting support sleeve 31 is provided with two end parts which are respectively and fixedly sleeved on the seat support rod 23, the limiting support sleeve 31 is provided with a clamping part 311, the clamping part 311 is provided with a U-shaped clamping groove 312 for clamping the mounting sleeve 17, and the U-shaped clamping groove 312 on the clamping part 311 is clamped on the upper peripheral wall of the mounting sleeve 17 in the unfolded state of the folding chair frame.

Referring to fig. 1, 3 and 4, the stiffener 32 includes a first stiffener 321, a second stiffener 322, a penetrating rod 323, a first diagonal rod 324 and a second diagonal rod 325, the axial directions of the first stiffener 321 and the second stiffener 322 are parallel to the axial direction of the grab bar 14, one end of the first stiffener 321 is rotatably connected to the mounting sleeve 17 on the first support leg 11, one end of the second stiffener 322 is rotatably connected to the mounting sleeve 17 on the second support leg 12, the axial direction of the penetrating rod 323 is parallel to the first stiffener 321, the penetrating rod 323 is rotatably penetrating through the upper portion of the cross connecting rod 21, the first diagonal rod 324 is fixedly connected between the first stiffener 321 and the penetrating rod 323, the second diagonal rod 325 is fixedly connected between the second stiffener 322 and the penetrating rod 323, and the first stiffener 321 and the second stiffener 322 are located above the support rod 13.

The cross connecting rod 21 is provided with a perforation in a penetrating way, the cross connecting rod 21 is provided with a first wear-resistant bushing 211 fixedly penetrating through the perforation, the penetrating rod 323 penetrates through the first wear-resistant bushing 211, and the first wear-resistant bushing 211 is a plastic bushing. The end parts of the first reinforcing rod 321 and the second reinforcing rod 322 are coaxially and fixedly sleeved with a second wear-resistant bushing 326, the second wear-resistant bushing 326 is a plastic bushing, and the second wear-resistant bushing 326 is rotatably inserted into an inner hole of the mounting sleeve 17.

The implementation principle of the foldable chair frame provided by the embodiment of the application is as follows: under this folding chair frame is the expansion state, the cross structure is located the middle part position department of side support frame 1 for the cross structure is relative to the indent in the seat bottom, on the one hand, reduces the blocking of cross link 21 to user's shank, improves folding chair's use comfort, on the other hand, and the cross structure is in a relative hidden state, and the user can not directly see fork structure, and is comparatively pleasing to the eye.

When the chair frame is required to be folded, the clamping part 311 on the limiting support sleeve 31 is firstly unlocked with the mounting sleeve 17, the U-shaped clamping groove 312 is separated from the upper peripheral wall of the mounting sleeve 17, the fixing constraint on the chair seat rods 23 is released, the acting force towards mutual approaching is applied to the two chair seat rods 23, the upper parts of the two cross connecting rods 21 are enabled to rotate towards the mutual approaching direction to be folded, and therefore the two side support frames 1 are enabled to fold towards the mutual approaching direction, and referring to fig. 6, the packaging volume is minimized, and portable carrying is realized.

Example 2:

the embodiment of the application also discloses a foldable chair, referring to fig. 7, comprising a foldable chair frame, a seat cloth 4 arranged between two seat rods 23 and a backrest cloth 5 arranged between two backrest rods 15. The two ends of the seat cloth 4 are respectively and fixedly connected to the two seat rods 23, and the two ends of the backrest cloth 5 are respectively and fixedly connected to the two backrest rods 15.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. A foldable chair frame, characterized in that: including a pair of side support frame (1) that are relative setting and set up in order to control two side support frame (1) to draw in or cross folding mechanism (2) that expand between two side support frame (1), each side support frame (1) include first stabilizer blade pole (11), second stabilizer blade pole (12) and fixed connection first stabilizer blade pole (11) and second stabilizer blade pole (12) between bracing piece (13), cross folding mechanism (2) are cross connecting rod (21), rotary rod (22) and seat support pole (23) that are articulated each other setting in the middle part, and the middle part fixed connection of rotary rod (22) is in the lower extreme of cross connecting rod (21), and the middle part fixed connection of seat support pole (23) is in the upper end of cross connecting rod (21), and rotary rod (22) swivelling joint is in between first stabilizer blade pole (11) and second stabilizer blade pole (12), and rotary rod (22) are located the below of 13), side support frame (1) are provided with two limit assembly (3) of cross connecting rod (21) relative rotation.

2. A foldable chair frame according to claim 1, wherein: spacing subassembly (3) are including setting up strengthening rib spare (32) between the upper portion of cross connecting rod (21) and first stabilizer blade pole (11)/second stabilizer blade pole (12), strengthening rib spare (32) are including rotating first stiffener (321) of connecting in first stabilizer blade pole (11), rotate second stiffener (322) of connecting in second stabilizer blade pole (12), rotate wear pole (323) of wearing to locate cross connecting rod (21) upper portion, first diagonal (324) of fixed connection between first stiffener (321) and wear pole (323) and second diagonal (325) of fixed connection between second stiffener (322) and wear pole (323), first stiffener (321), second stiffener (322) and wear pole (323) all to be on a parallel with bracing piece (13), first stiffener (321), second stiffener (322) all are located the top of bracing piece (13).

3. A foldable chair frame according to claim 2, wherein: the cross connecting rod (21) is provided with a through hole in a penetrating mode, the cross connecting rod (21) is provided with a first wear-resistant bushing (211) fixedly penetrating through the through hole, and the penetrating rod (323) penetrates through the first wear-resistant bushing (211).

4. A foldable chair frame according to claim 2, wherein: the first support leg rod (11) and the second support leg rod (12) are fixedly connected with mounting sleeves (17), the mounting sleeves (17) are located above the support rods (13), the end portions of the first reinforcing rods (321) are rotatably inserted into the mounting sleeves (17) arranged on the first support leg rod (11), and the end portions of the second reinforcing rods (322) are rotatably inserted into the mounting sleeves (17) arranged on the second support leg rod (12).

5. A foldable chair according to claim 4, wherein: the ends of the first reinforcing rod (321) and the second reinforcing rod (322) are coaxially and fixedly sleeved with a second wear-resistant bushing (326), and the second wear-resistant bushing (326) is rotatably inserted into the mounting sleeve (17).

6. A foldable chair according to claim 4, wherein: the limiting assembly (3) further comprises a limiting support sleeve (31) fixedly connected to the seat rod (23), the limiting support sleeve (31) is provided with a clamping part, and the clamping part is used for being clamped on the upper peripheral wall of the mounting sleeve (17) in the unfolded state of the foldable seat frame.

7. A foldable chair frame according to claim 1, wherein: the lower part of first stabilizer blade pole (11) is close to one side protrusion that second stabilizer blade pole (12) is fixed with first installation pole (111), the lower part of second stabilizer blade pole (12) is close to one side protrusion that first stabilizer blade pole (11) is fixed with second installation pole (121), hole (122) have all been seted up to the terminal surface of first installation pole (111) and second installation pole (121), first installation pole (111), second installation pole (121) and rotary rod (22) coaxial setting, rotary rod (22) are located between first installation pole (111) and second installation pole (121), the tip of rotary rod (22) is provided with and rotates and insert third wear-resisting bush (221) of locating hole (122).

8. A foldable chair according to claim 7, wherein: the side support frame (1) further comprises a grab bar (14) fixedly connected between the upper parts of the first support leg bar (11) and the second support leg bar (12), and the grab bar (14) is positioned above the support bar (13).

9. A foldable chair according to claim 7, wherein: the lower peripheral walls of the first mounting rod (111) and the second mounting rod (121) are convexly provided with wear-resistant foot pads (16).

10. A foldable chair, characterized in that: comprising a foldable seat according to any of claims 1-9 and a seat cloth (4) arranged at both of said seat bars (23) and a back cloth (5) arranged at the second leg bar (12) above the seat cloth (4).

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