CN115844157A - Cross folding chair framework - Google Patents

Abstract

The invention relates to a crossed folding chair framework, which comprises a fixing mechanism, a moving 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 end of the first connecting rod and the upper end 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 crossed, the second connecting rod on one base is hinged with the second connecting rod on the other base, the two second connecting rods are crossed, the left end and the right end of the moving seat are respectively rotatably connected with the two first cross rods, one ends of the two connecting pieces are respectively connected with the two first cross rods in a sliding manner, the other ends of the two connecting pieces are respectively connected with the left end and the right end of the moving seat in a sliding manner, and the fixing mechanism is used for fixing the moving seat and the bases; the technical problem that the comfort is poor due to the fact that the back of a cross folding chair and the seat of the chair in the prior art cannot be adjusted according to the requirements of a user is solved.

Description

Cross folding chair framework

Technical Field

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

Background

The portability of folding chairs due to their small size after folding is favored, and in particular, more and more people in recent years like outdoor camping or fishing, most of the folding chairs used in these activities are cross folding chairs, i.e. folding and unfolding by cross hinge. 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 seat is a rectangle, and the front and rear sides are longer than the left and right sides, so as to not only conform to the characteristics of ergonomics, but also save materials and reduce cost; however, when the cross folding mechanism of the folding chair is used, the chair seat and the chair back are fixed and cannot be adjusted according to the requirements of users, and the comfort is poor.

Disclosure of Invention

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

In order to solve the technical problems, the invention provides a crossed folding chair framework which comprises two fixing mechanisms, two first supporting rods, two bases and two connecting pieces, wherein the two bases are hinged to each other to form a crossed scissor 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 rotating axis of each first supporting rod is along the 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 obliquely arranged 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 adopting the structure, the cross folding chair framework has the following advantages: two bases are articulated each other and form crossing scissors structure, make the skeleton whole collapsible, can directly set up the canvas face between two first bracing pieces and supply the user to sit and lean on as back of the chair and seat support, because first bracing piece rotates with first horizontal pole to be connected, again through connecting piece and first horizontal pole sliding connection, consequently when using, can change the relative angle between first bracing piece and the base through rotating first bracing piece, even the user can adjust the angle of the back of the chair and seat support according to the demand of oneself, the improvement travelling comfort, and fixed establishment is fixed first bracing piece and base, can improve the security in the use.

As an improvement, each base further comprises a first connecting rod and a second connecting rod, the first connecting rods and the second connecting rods are parallel to each other, the two ends of each first cross rod are connected with the upper ends of the first connecting rods and the upper ends of the second connecting rods respectively, the first connecting rod on one base is hinged to the first connecting rod on the other base, the two first connecting rods are arranged in a crossed mode, the second connecting rod on one base is hinged to the second connecting rod on the other base, and the two second connecting rods are arranged in a crossed mode.

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 supporting rod in a sliding manner; by adopting the structure, the first cross rod is connected with the first sleeve in a sliding manner, and the second sleeve is connected with the first supporting rod in a sliding manner, 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 rotatably connected to the first cross rod, the rotating axes of the first sleeve and the third sleeve are along the axial direction of the first cross rod, and the first support rod is rotatably connected with the third sleeve; by adopting the structure, the first sleeve and the third sleeve are rotatably connected with the first cross rod, so that the first supporting rod can rotate relative to the first cross rod, and the first supporting rod is rotated during folding, so that the whole volume after folding is smaller, and the folding device is convenient to store and carry.

As an improvement, two first limiting rings are sleeved on the first cross rod, and two end faces of the third sleeve are respectively abutted against the two first limiting rings; by adopting the structure, the third sleeve is limited by the two first limiting rings, and 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 shifting knob, a limiting bulge, a first limiting hole and a spring, 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 part of the shifting knob is rotationally connected with the second sleeve, the spring is compressed between the shifting knob and the second sleeve, two ends of the spring are respectively connected with one end of the shifting knob and the second sleeve, the limiting bulge is connected with the other end of the shifting knob, 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 fixes the second sleeve and the first supporting rod; by adopting the structure, after the first sleeve slides to the direction of the second limit ring to abut against the second limit ring, the first sleeve cannot slide in the direction further; when the first sleeve slides in the direction far away from the second limiting ring, after the limiting protrusion is coaxial with the first limiting hole, the compressed spring enables the poking torsion to rotate, the limiting protrusion is inserted into the first limiting hole, the second sleeve is fixed with the first supporting rod, and then the first supporting rod and the base are fixed.

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 rotatably connected with the first cross rod, and the other end of the connecting piece is slidably connected with the third support rod; adopt this kind of structure, form obtuse angle or right angle between third bracing piece and the second bracing piece, regard as the seat support part by the second bracing piece, regard as back of the chair part by the third bracing piece, further improve the travelling comfort.

As an improvement, the third support rod comprises a folding rod and a support rod body, the lower end of the folding rod is rotatably connected with the support rod body, the rotating 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 slidably connected with the support rod body; by adopting the structure, the folding rod can be further rotated and folded relative to the supporting rod body during folding, and the size of the folding storage is further reduced.

As an improvement, the lower end of the folding rod is provided with a jack, an articulated shaft is connected in the jack, the articulated shaft is horizontally arranged, the jack forms an opening on the side wall of the folding rod, the opening faces to the seating space, the opening extends from the lower end of the folding rod to the direction far away from the support rod body, and the upper end of the support rod body is positioned in the jack and is rotationally connected with the articulated shaft; by adopting the structure, the opening facing the sitting space ensures that the folding rod can be smoothly folded, the part of the folding rod opposite to the opening can be used as a limiting mechanism, when a user sits on the first supporting rod, a downward or obliquely downward force is applied to the folding rod, and at the moment, the part of the folding rod is used as the limiting mechanism to prevent the folding rod from reversely rotating.

As an improvement, the base further 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 overall structure of the present invention in an expanded state.

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

Fig. 3 is a schematic view of the overall structure of the present invention in the expanded state.

Fig. 4 is a schematic structural view of a fixing mechanism portion in an expanded state of the present invention.

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

Fig. 6 is a schematic perspective view of the overall structure of the folded state of the present invention.

Reference numerals are as follows: 100. a fixing mechanism; 300. a base; 400. a connecting member; 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 limit ring; 9. a second stop collar; 10. dialing and twisting; 11. a limiting bulge; 12. a first limit hole; 13. a spring; 14. a seating space; 15. a jack; 16. hinging shafts; 17. an opening; 18. a second cross bar; 19. a third limit ring; 20. a second limiting hole.

Detailed Description

The cross folding chair framework of the invention is explained in detail with the attached drawings.

As shown in fig. 1 to 6, a cross folding chair framework comprises two fixing mechanisms 100, two first supporting rods 4, two bases 300 and two connecting pieces 400, wherein the two bases 300 are hinged to each other 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 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, 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 to 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 to 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, all terms of directions such as up, down, left, right, front, back, and the like refer to a state when a user sits on the folding chair, the two first support rods 4 are respectively rotatably connected to the two first crossbars 1, the rotation axes of the first support rods 4 are along the left-right direction, the first support rods 4 rotate in a vertical plane, the two first support rods 4 are located between the two first crossbars 1, one ends of the two connecting members 400 are respectively slidably connected to the two first crossbars 1, and the other ends of the two connecting members 400 are respectively slidably connected to the two first support rods 4, wherein the rotation axes of the first support rods 4 are located on the front side of the whole framework, and the connecting members 400 are located on the back side of the whole framework.

As shown in fig. 1, two first supporting rods 4 are arranged on the left and right, and taking one of the first supporting rods 4 as an example, the front end portion of the first supporting rod 4 is hinged with the first cross rod 1, and the other end of the connecting member 400 is slidably connected with the rear end portion of the first supporting rod 4, and the sliding route of the other end of the connecting member 400 on the first supporting rod 4 is inclined with respect to the sliding route of one end of the connecting member 400 on the first cross rod 1. As shown in fig. 1 and 2, the connecting 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 obliquely arranged with respect to a central axis of the first sleeve 5, the first sleeve 5 is slidably connected to the first crossbar 1, the first sleeve 5 is slidably connected to a rear end portion of the first crossbar 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, a third sleeve 7 is sleeved on the first cross bar 1, the third sleeve 7 is located at the front end portion of the first cross bar 1, the first sleeve 5 and the third sleeve 7 are both rotatably 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, the first support rod 4 and the third sleeve 7 are rotatably connected, in practical use, canvas surfaces need to be arranged on the two first support rods 4, therefore, when a user sits on the canvas surfaces, the first sleeve 5 and the third sleeve 7 can rotate under the action of gravity of the user, and the first support rod 4 can rotate in the direction away from the other first support rod 4, so as to prop up the canvas surfaces, the canvas surfaces propped up at the moment can be used as a limiting mechanism for the two first support rods 4, and the two first support rods 4 can not continue to rotate in the direction away from the other first support rod 4.

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, a sitting space 14 is formed between the third support rod 42 and the second support rod 41, and the angle α is an obtuse angle or a right angle; in this embodiment, an angle α between the third support bar 42 and the second support bar 41 is a right angle, the lower end of the third support bar 42 is connected to the rear end of the second support bar 41, the third support bar 42 is in transition with the second support bar 41 through an arc portion, the second support bar 41 is rotatably connected to the first cross bar 1, that is, the front end portion of the second support bar 41 is rotatably connected to the third sleeve 7, and the other end of the connecting member 400 is slidably connected to the third support bar 42, that is, the second sleeve 6 is slidably connected to the third support bar 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 to the support rod body 422, the rotation axis of the folding rod 421 is horizontally disposed, the support rod body 422 is connected to the second support rod 41 and forms an angle α with the second support rod 41, and the other end of the connecting member 400 is slidably connected to the support rod body 422, that is, the second sleeve 6 is slidably connected to 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, a hinge shaft 16 is connected in the jack 15, 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 from the lower end of the folding rod 421 in the direction away from the support rod body 422, and the upper end of the support rod body 422 is located in the jack 15 and rotatably connected with the hinge shaft 16, so that, when the skeleton is integrally in the unfolded state shown in fig. 3, the folding rod 421 can only rotate clockwise in fig. 3, if the folding rod 421 has a tendency of rotating counterclockwise due to the pressure of a user, the folding rod 421 opposite to the opening 17 abuts against the support rod body 422, so that the folding rod 421 cannot rotate counterclockwise in the unfolded state.

As shown in fig. 3, two first limiting rings 8 are sleeved on the first cross bar 1, and the front end face and the rear end face of the third sleeve 7 are respectively abutted 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 button 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 a sliding path of the first sleeve 5, and as shown in fig. 3, the second limiting ring 9 is located on the front side of the first sleeve 5; as shown in fig. 4 and 5, the middle of the toggle 10 is rotatably connected to 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 to one end of the toggle 10 and the second sleeve 6, the limiting protrusion 11 is connected to the other end of the toggle 10, the first limiting hole 12 is disposed on the first supporting rod 4, that is, the first limiting hole 12 is disposed on the supporting rod body 422, the limiting protrusion 11 and the spring 13 are both connected to the end surface of the toggle 10 facing the supporting rod body 422, when the limiting protrusion 11 is not coaxial with the first limiting hole 12, the compressed spring 13 makes the limiting protrusion 11 abut against the supporting rod body 422, when the first sleeve 5 slides a distance in the direction away from the second limiting ring 9, until the limiting protrusion 11 is coaxial with the first limiting hole 12, the spring 13 makes the limiting protrusion 11 insert into the first limiting hole 12 and fixes the second sleeve 6 to the first supporting rod 4, thereby fixing the first supporting rod 4 to the base 300; in addition, the support rod body 422 is further 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 is just abutted against the third limiting ring 19; the supporting rod body 422 is further provided with a second limiting hole 20, the second limiting hole 20 is located on the same side as the first limiting hole 12 and below the first limiting hole, the second limiting hole 20 has a similar action and a similar working principle as the first limiting hole 12, and after the first sleeve 5 slides for a distance in the direction of the second limiting ring 9 until the limiting protrusion 11 is coaxial with the second limiting hole 20, the spring 13 enables the limiting protrusion 11 to be inserted into the second limiting hole 20.

Between the head rod 2 of two bases 300 and between the second connecting rod 3 cross-hinged, make the skeleton whole collapsible, and can set up the canvas cover on the first bracing piece 4 and supply the user to sit and lean on as back of the chair and seat support, because first bracing piece 4 rotates with first horizontal pole 1 to be connected, again through connecting piece 400 and 1 sliding connection of first horizontal pole, consequently when using, can change the relative angle between first bracing piece 4 and the base 300 through rotating first bracing piece 4, even the angle that the back of the chair and seat support can be adjusted according to the demand of oneself to the user, improve the travelling comfort.

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

Claims (10)

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 crossing 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 is sliding connection two respectively first horizontal pole (1), two the connecting piece (400) other end is sliding connection two respectively first bracing piece (4), the connecting piece (400) other end is in sliding route on first bracing piece (4) is relative connecting piece (400) one end is in 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) are fixed.

2. A cross-folding chair frame according to claim 1, characterized in that each of the bases (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 ends of the first connecting rod (2) and the second connecting rod (3), wherein the first connecting rod (2) on one of the bases (300) is hinged with the first connecting rod (2) on the other base (300), the two first connecting rods (2) are arranged crosswise, the second connecting rod (3) on one of the bases (300) is hinged with the second connecting rod (3) on the other base (300), and the two second connecting rods (3) are arranged crosswise.

3. A cross-fold chair frame according to claim 1, characterized in that the connecting member (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 inclined relative to the central axis of the first sleeve (5), the first sleeve (5) is slidably connected with the first cross bar (1), and the second sleeve (6) is slidably connected with the first supporting bar (4).

4. The cross folding chair framework as claimed in claim 3, wherein 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 rotatably connected to the first cross bar (1), the rotating axes of the first sleeve (5) and the third sleeve (7) are along the axial direction of the first cross bar (1), and the first support rod (4) is rotatably connected to the third sleeve (7).

5. The framework of a cross-folding chair as claimed in claim 4, wherein the first cross bar (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. The cross folding chair framework 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 a sliding path of the first sleeve (5), the middle 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) in a direction, the sliding protrusion is inserted into the first limiting hole (11) and fixed with the second sleeve (6).

7. The cross-folding chair frame according to claim 1, characterized in that the first support bar (4) comprises a second support bar (41) and a third support bar (42), one end of the third support bar (42) is connected with the second support bar (41) and forms an angle α with the second support bar (41), a sitting space (14) is formed between the third support bar (42) and the second support bar (41), the angle α is an obtuse angle or a right angle, the second support bar (41) is rotatably connected with the first cross bar (1), and the other end of the connecting piece (400) is slidably connected with the third support bar (42).

8. The cross-folding chair frame as claimed in claim 7, wherein the third support rod (42) comprises 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 the other end of the connecting member (400) is slidably connected with the support rod body (422).

9. The crossed folding chair framework as claimed in claim 8, wherein a jack (15) is arranged at the lower end of the folding rod (421), a hinge shaft (16) is connected in 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 sitting space (14), the opening (17) extends from the lower end of the folding rod (421) to the direction far away from the supporting rod body (422), and the upper end of the supporting rod body (422) is positioned in the jack (15) and is rotatably connected with the hinge shaft (16).

10. The framework of a cross-foldable chair as claimed in claim 2, wherein the base (300) further comprises a second cross bar (18), and the two ends of the second cross bar (18) are respectively connected with the lower ends of the first connecting rod (2) and the second connecting rod (3).

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