CN218978407U

CN218978407U - Cross folding chair framework

Info

Publication number: CN218978407U
Application number: CN202223406831.8U
Authority: CN
Inventors: 金戟
Original assignee: Ningbo Oulu Creative Home Co ltd
Current assignee: Ningbo Oulu Creative Home Co ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-05-09
Anticipated expiration: 2032-12-20

Abstract

The utility model relates to a cross folding chair framework, which comprises a fixing mechanism, a movable seat, two bases and two connecting pieces, wherein each base comprises a first cross rod, a first connecting rod and a second connecting rod, two ends of the first cross rod are respectively connected with the upper ends of the first connecting rod and the upper ends of the second connecting rod, the first connecting rod on one base is hinged with the first connecting rod on the other base, the two first connecting rods are arranged in a cross way, the second connecting rod on one base is hinged with the second connecting rod on the other base, the two second connecting rods are arranged in a cross way, the left end and the right end of the movable seat are respectively connected with the two first cross rods in a rotating way, one ends of the two connecting pieces are respectively connected with the two first cross rods in a sliding way, the other ends of the two connecting pieces are respectively connected with the left end and the right end of the movable seat in a sliding way, and the fixing mechanism is used for fixing the movable seat and the base; the technical problem that the chair back and the chair seat of the cross folding chair in the prior art cannot be adjusted according to the requirements of users, so that the comfort is poor is solved.

Description

Cross folding chair framework

Technical Field

The utility model relates to the technical field of folding chairs, in particular to a framework of a cross folding chair.

Background

The portability of the folding chairs due to the small volume of the folding chairs is favored by people, and more people in recent years like outdoor camping or fishing, and most of the folding chairs used in these activities are cross folding chairs, namely folding and unfolding in a cross hinging manner. For example, chinese patent CN201094418Y discloses a cross folding mechanism of a folding chair, which makes the top view of the folding chair be a rectangle when the folding chair is unfolded, i.e. the chair surface is a rectangle, and the front and rear sides are longer than the left and right sides, so that the folding chair not only accords with the characteristics of human engineering, but also can save materials and reduce cost; however, when the cross folding mechanism of the folding chair is used, the seat and the chair back of the cross folding mechanism are fixed and cannot be adjusted according to the requirements of users, so that the comfort is poor.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide the cross folding chair framework with better comfort.

In order to solve the technical problems, the utility model provides a cross folding chair framework, which comprises two fixing mechanisms, two first supporting rods, two bases and two connecting pieces, wherein the two bases are mutually hinged to form a cross type scissors structure, each base comprises a first cross rod, the two first supporting rods are respectively and rotatably connected with the two first cross rods, the rotation axes of the first supporting rods are in a left-right direction, one ends of the two connecting pieces are respectively and slidably connected with the two first cross rods, the other ends of the two connecting pieces are respectively and slidably connected with the two first supporting rods, the sliding route of the other ends of the connecting pieces on the first supporting rods is inclined relative to the sliding route of one ends of the connecting pieces on the first cross rods, and the fixing mechanisms are used for fixing the first supporting rods and the bases.

After the structure is adopted, the cross folding chair framework has the following advantages: the two bases are hinged with each other and form a cross-type scissors structure, so that the framework is integrally foldable, a canvas surface can be directly arranged between the two first support rods to serve as a chair back and a chair seat for a user to sit and lean against, and the first support rods are rotationally connected with the first cross rods and are slidably connected with the first cross rods through the connecting pieces, so that when the cross-type scissors structure is used, the relative angle between the first support rods and the bases can be changed by rotating the first support rods, namely, a user can adjust the angle of the chair back and the chair seat according to own requirements, the comfort is improved, and the fixing mechanism fixes the first support rods with the bases, so that the safety in the use process can be improved.

As an improvement, every base still includes head rod and second connecting rod, and head rod and second connecting rod are parallel to each other, and head rod upper end and second connecting rod upper end are connected respectively at first horizontal pole both ends, and the head rod on one of them base articulates with the head rod on another base, and two head rods cross arrangement, and the second connecting rod on one of them base articulates with the second connecting rod on another base, and two second connecting rod cross arrangement.

As an improvement, the connecting piece comprises a first sleeve and a second sleeve, the first sleeve is connected with the second sleeve, the central axis of the second sleeve is obliquely arranged relative to the central axis of the first sleeve, the first sleeve is connected to the first cross rod in a sliding manner, and the second sleeve is connected to the first support rod in a sliding manner; by adopting the structure, the first cross rod is connected with the first sleeve in a sliding way, and the first support rod is connected with the second sleeve in a sliding way, so that the sliding structure is stable.

As an improvement, the cross section of the first cross rod is circular, a third sleeve is sleeved on the first cross rod, the first sleeve and the third sleeve are both rotationally connected to the first cross rod, the rotation axes of the first sleeve and the third sleeve are both along the axial direction of the first cross rod, and the first support rod is rotationally connected with the third sleeve; by adopting the structure, the first sleeve and the third sleeve are rotationally connected with the first cross rod, so that the first support rod can rotate relative to the first cross rod, and the first support rod is rotated during folding to enable the whole volume to be smaller after folding, and the folding device is convenient to store and carry.

As an improvement, the first cross rod is sleeved with two first limiting rings, and two end faces of the third sleeve are respectively propped against the two first limiting rings; by adopting the structure, the third sleeve is limited by the two first limiting rings, so that the third sleeve is prevented from axially sliding on the first cross rod.

As an improvement, the fixing mechanism comprises a second limiting ring, a poking button, a limiting bulge, a first limiting hole and a spring, wherein the second limiting ring is sleeved on the first cross rod, the second limiting ring is positioned on a sliding path of the first sleeve, the middle of the poking button is rotationally connected with the second sleeve, the spring is compressed between the poking button and the second sleeve, two ends of the spring are respectively connected with one end of the poking button and the second sleeve, the limiting bulge is connected with the other end of the poking button, the first limiting hole is formed in the first supporting rod, and after the first sleeve slides for a certain distance away from the second limiting ring, the limiting bulge is inserted into the first limiting hole and is fixed with the first supporting rod; with the structure, after the first sleeve slides to the second limiting ring to prop against the second limiting ring, the first sleeve cannot slide further in the direction; when the first sleeve slides towards the direction away from the second limiting ring, after the limiting protrusion is coaxial with the first limiting hole, the compressed spring enables the shifting knob to rotate, the limiting protrusion is inserted into the first limiting hole, the second sleeve is fixed with the first supporting rod, and then fixation between the first supporting rod and the base is achieved.

As an improvement, the first support rod comprises a second support rod and a third support rod, one end of the third support rod is connected with the second support rod and forms an angle alpha with the second support rod, a sitting space is formed between the third support rod and the second support rod, the angle alpha is an obtuse angle or a right angle, the second support rod is rotationally connected with the first cross rod, and the other end of the connecting piece is in sliding connection with the third support rod; by adopting the structure, an obtuse angle or a right angle is formed between the third supporting rod and the second supporting rod, the second supporting rod is used as a seat part, and the third supporting rod is used as a chair back part, so that the comfort is further improved.

As an improvement, the third support rod comprises a folding rod and a support rod body, the lower end of the folding rod is rotationally connected with the support rod body, the rotation axis of the folding rod is horizontally arranged, the support rod body is connected with the second support rod, and the other end of the connecting piece is in sliding connection with the support rod body; by adopting the structure, the folding rod can be further rotated and folded relative to the support rod body during folding, so that the volume during folding and storage is further reduced.

As an improvement, the lower end of the folding rod is provided with a jack, a hinge shaft is connected in the jack, the hinge shaft is horizontally arranged, the jack forms an opening on the side wall of the folding rod, the opening faces to the sitting space, the opening extends from the lower end of the folding rod to the direction away from the supporting rod body, and the upper end of the supporting rod body is positioned in the jack and is rotationally connected with the hinge shaft; with this structure, the folding bar is ensured to be folded smoothly toward the opening of the seating space, and the portion of the folding bar opposite to the opening can be used as the limit mechanism, and a downward or obliquely downward force can be applied to the folding bar when the user sits on the first support bar, and at this time, the folding bar of this portion can be used as the limit mechanism to prevent the folding bar from rotating reversely.

As an improvement, the base also comprises a second cross rod, and two ends of the second cross rod are respectively connected with the lower end of the first connecting rod and the lower end of the second connecting rod; by adopting the structure, the whole structure is more stable.

Drawings

Fig. 1 is a schematic perspective view of the whole structure in the unfolded state in the present utility model.

Fig. 2 is a partial enlarged view of the portion a in fig. 1.

Fig. 3 is a schematic view of the whole structure in the unfolded state in the present utility model.

Fig. 4 is a schematic structural view of a fixing mechanism portion in a developed state in the present utility model.

Fig. 5 is a partial enlarged view of the portion B in fig. 4.

Fig. 6 is a schematic perspective view of the whole structure in a folded state in the present utility model.

Reference numerals: 100. a fixing mechanism; 300. a base; 400. a connecting piece; 1. a first cross bar; 2. a first connecting rod; 3. a second connecting rod; 4. a first support bar; 41. a second support bar; 42. a third support bar; 421. a folding bar; 422. a support rod body; 5. a first sleeve; 6. a second sleeve; 7. a third sleeve; 8. a first stop collar; 9. a second limiting ring; 10. a poking button; 11. a limit protrusion; 12. a first limiting hole; 13. a spring; 14. a seating space; 15. a jack; 16. a hinge shaft; 17. an opening; 18. a second cross bar; 19. a third limiting ring; 20. and the second limiting hole.

Detailed Description

The cross folding chair frame of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 6, a cross folding chair frame comprises two fixing mechanisms 100, two first supporting rods 4, two bases 300 and two connecting pieces 400, wherein the two bases 300 are mutually hinged and form a cross scissor structure, each base 300 comprises a first cross rod 1, a first connecting rod 2, a second connecting rod 3 and a second cross rod 18, the first connecting rod 2 and the second connecting rod 3 are mutually parallel, two ends of the first cross rod 1 are respectively connected with the upper end of the first connecting rod 2 and the upper end of the second connecting rod 3, two ends of the second cross rod 18 are respectively connected with the lower end of the first connecting rod 2 and the lower end of the second connecting rod 3, the first connecting rod 2 on one base 300 is hinged with the first connecting rod 2 on the other base 300, the two first connecting rods 2 are arranged in a cross manner, the second connecting rod 3 on one base 300 is hinged with the second connecting rod 3 on the other base 300, and the two second connecting rods 3 are arranged in a cross manner; it should be noted that, in the present embodiment, the terms of up, down, left, right, front, back, and other directions are all based on the state when the user sits on the folding chair, the two first support rods 4 are respectively connected with the two first cross rods 1 in a rotating manner, the rotation axes of the first support rods 4 are along the left-right direction, the first support rods 4 rotate in the vertical plane, the two first support rods 4 are located between the two first cross rods 1, one ends of the two connecting pieces 400 are respectively connected with the two first cross rods 1 in a sliding manner, the other ends of the two connecting pieces 400 are respectively connected with the two first support rods 4 in a sliding manner, wherein the rotation axes of the first support rods 4 are located at the front side of the whole framework, and the connecting pieces 400 are located at the rear side of the whole framework.

As shown in fig. 1, two first support rods 4 are arranged left and right, for example, one first support rod 4 is taken as an example, the front end part of the first support rod 4 is hinged with the first cross rod 1, the other end of the connecting piece 400 is slidably connected with the rear end part of the first support rod 4, and the sliding route of the other end of the connecting piece 400 on the first support rod 4 is inclined relative to the sliding route of the one end of the connecting piece 400 on the first cross rod 1. As shown in fig. 1 and 2, the connection member 400 includes a first sleeve 5 and a second sleeve 6, the first sleeve 5 is connected to the second sleeve 6, a central axis of the second sleeve 6 is disposed obliquely with respect to a central axis of the first sleeve 5, the first sleeve 5 is slidably connected to the first rail 1, and the first sleeve 5 is slidably connected to a rear end portion of the first rail 1, and the second sleeve 6 is slidably connected to the first support bar 4; in addition, the cross-section of the first cross bar 1 is circular, the third sleeve 7 has been cup jointed on the first cross bar 1, the third sleeve 7 is located the front end portion of first cross bar 1, first sleeve 5 and third sleeve 7 all rotate and connect on first cross bar 1, the axis of rotation of first sleeve 5 and third sleeve 7 all is along first cross bar 1 axial direction, first bracing piece 4 and third sleeve 7 rotate and are connected, during actual use, need set up the canvas face on two first bracing pieces 4, therefore when the user sits on the canvas face, first sleeve 5 and third sleeve 7 can rotate under user's gravity effect, and make first bracing piece 4 to rotate to keeping away from another first bracing piece 4 direction, thereby strut the canvas face, the canvas face that struts then can regard as the stop gear of two first bracing pieces 4, make two first bracing pieces 4 all unable continue to rotate to keeping away from another first bracing piece 4 direction.

As shown in fig. 1 and 3, the first support rod 4 includes a second support rod 41 and a third support rod 42, one end of the third support rod 42 is connected to the second support rod 41 and forms an angle α with the second support rod 41, and the third support rod 42 and the second support rod 41 form a seating space 14 therebetween, the angle α being an obtuse angle or a right angle; in this embodiment, the angle α between the third support rod 42 and the second support rod 41 is a right angle, the lower end of the third support rod 42 is connected to the rear end of the second support rod 41, and the third support rod 42 and the second support rod 41 are transited through an arc portion, the second support rod 41 is rotationally connected to the first cross rod 1, i.e. the front end portion of the second support rod 41 is rotationally connected to the third sleeve 7, and the other end of the connecting piece 400 is slidingly connected to the third support rod 42, i.e. the second sleeve 6 is slidingly connected to the third support rod 42; further, the third support rod 42 includes a folding rod 421 and a support rod body 422, the lower end of the folding rod 421 is rotatably connected with the support rod body 422, the rotation axis of the folding rod 421 is horizontally arranged, the support rod body 422 is connected with the second support rod 41 and forms an angle α with the second support rod 41, and the other end of the connecting piece 400 is slidably connected with the support rod body 422, that is, the second sleeve 6 is slidably connected with the support rod body 422.

As shown in fig. 2 and 3, the lower end of the folding rod 421 is provided with a jack 15, the jack 15 is connected with a hinge shaft 16, the hinge shaft 16 is horizontally disposed, the jack 15 forms an opening 17 on the side wall of the folding rod 421, the opening 17 faces the seating space 14, the opening 17 extends away from the support rod body 422 from the lower end of the folding rod 421, and the upper end of the support rod body 422 is located in the jack 15 and is rotationally connected with the hinge shaft 16, so that when the whole framework is in the unfolded state as shown in fig. 3, the folding rod 421 can only rotate clockwise in fig. 3, if the folding rod 421 has a tendency to rotate anticlockwise due to the pressure of a user, the folding rod 421 opposite to the opening 17 can be abutted against the support rod body 422, so that the folding rod 421 cannot rotate anticlockwise in the unfolded state.

As shown in fig. 3, the first cross bar 1 is sleeved with two first limiting rings 8, and the front end surface and the rear end surface of the third sleeve 7 respectively prop against the two first limiting rings 8; the fixing mechanism 100 is used for fixing the first support rod 4 and the base 300, the fixing mechanism 100 comprises a second limiting ring 9, a toggle 10, a limiting protrusion 11, a first limiting hole 12 and a spring 13, the second limiting ring 9 is sleeved on the first cross rod 1, the second limiting ring 9 is positioned on the sliding path of the first sleeve 5, and as shown in fig. 3, the second limiting ring 9 is positioned at the front side of the first sleeve 5; as shown in fig. 4 and fig. 5, the middle part of the knob 10 is rotationally connected with the second sleeve 6, the spring 13 is compressed between the knob 10 and the second sleeve 6, two ends of the spring 13 are respectively connected with one end of the knob 10 and the second sleeve 6, the limit projection 11 is connected with the other end of the knob 10, the first limit hole 12 is arranged on the first support rod 4, namely the first limit hole 12 is arranged on the support rod body 422, the limit projection 11 and the spring 13 are both connected on the end face of the knob 10 facing the support rod body 422, when the limit projection 11 is not coaxial with the first limit hole 12, the compressed spring 13 enables the limit projection 11 to abut against the support rod body 422, when the first sleeve 5 slides for a certain distance away from the second limit ring 9 until the limit projection 11 is coaxial with the first limit hole 12, the spring 13 enables the limit projection 11 to be inserted into the first limit hole 12 and fixes the second sleeve 6 with the first support rod 4, and further realizes the fixation between the first support rod 4 and the base 300; in addition, the support rod body 422 is also sleeved with a third limiting ring 19, the third limiting ring 19 is positioned at the upper end of the second sleeve 6, and after the limiting protrusion 11 is inserted into the first limiting hole 12, the upper end of the second sleeve 6 just abuts against the third limiting ring 19; the support rod body 422 is further provided with a second limiting hole 20, the second limiting hole 20 is located on the same side of the first limiting hole 12 and below the same, the second limiting hole 20 is similar to the first limiting hole 12 in function and working principle, after the first sleeve 5 slides a certain distance towards the second limiting ring 9, the limiting protrusion 11 is inserted into the second limiting hole 20 until the limiting protrusion 11 is coaxial with the second limiting hole 20, and the spring 13 enables the limiting protrusion 11 to be inserted into the second limiting hole 20.

The first connecting rods 2 and the second connecting rods 3 of the two bases 300 are in cross hinge connection, so that the framework is integrally foldable, the canvas surface can be arranged on the first supporting rods 4 to serve as a chair back and a chair seat for a user to sit on, and the first supporting rods 4 are rotationally connected with the first cross rod 1 and are slidably connected with the first cross rod 1 through the connecting pieces 400, so that when the chair is used, the relative angle between the first supporting rods 4 and the bases 300 can be changed by rotating the first supporting rods 4, namely, the user can adjust the angle of the chair back and the chair seat according to the needs of the user, and the comfort is improved.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above-described one embodiment, and all other examples obtained by those skilled in the art without making any inventive effort are within the scope of the present utility model.

Claims

1. The utility model provides a cross folding chair skeleton, its characterized in that includes two fixed establishment (100), two first bracing piece (4), two base (300) and two connecting piece (400), two base (300) are articulated each other and form cross scissors structure, every base (300) all include first horizontal pole (1), two first bracing piece (4) respectively with two first horizontal pole (1) rotate to be connected just the axis of rotation of first bracing piece (4) is along controlling the direction, two connecting piece (400) one end respectively sliding connection two first horizontal pole (1), two connecting piece (400) other end respectively sliding connection two first bracing piece (4), the sliding route of connecting piece (400) other end is relative on first bracing piece (4) one end is in the sliding route on first horizontal pole (1) is the slope setting, fixed establishment (100) are used for with first bracing piece (4) with base (300).

2. The cross folding chair frame according to claim 1, wherein each base (300) further comprises a first connecting rod (2) and a second connecting rod (3), the first connecting rod (2) and the second connecting rod (3) are parallel to each other, two ends of the first cross rod (1) are respectively connected with the upper end of the first connecting rod (2) and the upper end of the second connecting rod (3), one of the first connecting rods (2) on the base (300) is hinged with the first connecting rod (2) on the other base (300), two first connecting rods (2) are arranged in a cross mode, one of the second connecting rods (3) on the base (300) is hinged with the second connecting rod (3) on the other base (300), and two second connecting rods (3) are arranged in a cross mode.

3. The cross folding chair frame according to claim 1, characterized in that the connecting piece (400) comprises a first sleeve (5) and a second sleeve (6), the first sleeve (5) is connected with the second sleeve (6), the central axis of the second sleeve (6) is arranged obliquely relative to the central axis of the first sleeve (5), the first sleeve (5) is connected to the first cross bar (1) in a sliding manner, and the second sleeve (6) is connected to the first support bar (4) in a sliding manner.

4. A cross folding chair frame according to claim 3, characterized in that the cross section of the first cross bar (1) is circular, a third sleeve (7) is sleeved on the first cross bar (1), the first sleeve (5) and the third sleeve (7) are both rotationally connected to the first cross bar (1), the rotation axes of the first sleeve (5) and the third sleeve (7) are both along the axial direction of the first cross bar (1), and the first support bar (4) is rotationally connected to the third sleeve (7).

5. The cross folding chair framework according to claim 4, wherein the first cross rod (1) is sleeved with two first limiting rings (8), and two end faces of the third sleeve (7) are respectively abutted against the two first limiting rings (8).

6. A cross folding chair frame according to claim 3, characterized in that the fixing mechanism (100) comprises a second limiting ring (9), a toggle (10), a limiting protrusion (11), a first limiting hole (12) and a spring (13), the second limiting ring (9) is sleeved on the first cross rod (1), the second limiting ring (9) is located on the sliding path of the first sleeve (5), the middle part of the toggle (10) is rotationally connected with the second sleeve (6), the spring (13) is compressed between the toggle (10) and the second sleeve (6), two ends of the spring (13) are respectively connected with one end of the toggle (10) and the second sleeve (6), the limiting protrusion (11) is connected with the other end of the toggle (10), the first limiting hole (12) is arranged on the first supporting rod (4), and when the first sleeve (5) is far away from the second limiting ring (9), the first sleeve (12) is inserted into the first limiting protrusion (12) and the first sleeve (4) is fixed in the limiting hole (12).

7. The cross folding chair frame according to claim 1, wherein the first supporting rod (4) comprises a second supporting rod (41) and a third supporting rod (42), one end of the third supporting rod (42) is connected with the second supporting rod (41) and forms an angle alpha with the second supporting rod (41), a seating space (14) is formed between the third supporting rod (42) and the second supporting rod (41), the angle alpha is an obtuse angle or a right angle, the second supporting rod (41) is rotatably connected with the first cross rod (1), and the other end of the connecting piece (400) is slidably connected with the third supporting rod (42).

8. The cross folding chair frame according to claim 7, wherein the third support bar (42) comprises a folding bar (421) and a support bar body (422), the lower end of the folding bar (421) is rotatably connected with the support bar body (422), the rotation axis of the folding bar (421) is horizontally arranged, the support bar body (422) is connected with the second support bar (41), and the other end of the connecting piece (400) is slidably connected with the support bar body (422).

9. The cross folding chair frame according to claim 8, wherein the lower end of the folding rod (421) is provided with a jack (15), a hinge shaft (16) is connected to the jack (15), the hinge shaft (16) is horizontally arranged, the jack (15) forms an opening (17) on the side wall of the folding rod (421), the opening (17) faces the seating space (14), the opening (17) extends from the lower end of the folding rod (421) to a direction away from the supporting rod body (422), and the upper end of the supporting rod body (422) is located in the jack (15) and is rotationally connected with the hinge shaft (16).

10. The cross folding chair frame according to claim 2, wherein the base (300) further comprises a second cross bar (18), and two ends of the second cross bar (18) are respectively connected with the lower ends of the first connecting rod (2) and the lower ends of the second connecting rod (3).