CN218999911U - Quick folding chair frame - Google Patents

Abstract

The application discloses quick folding chair frame, including the diagonal bracing mechanism of relative setting and connect two gangbars of diagonal bracing mechanism, diagonal bracing mechanism two relative settings diagonal bracing and two bottom hack levers of relative setting, the gangbar is crisscross and articulated each other, two the bottom hack lever articulates with the one end of gangbar and sets up on first connecting piece, diagonal bracing one end with the other end of bottom hack lever articulates, the other end of diagonal bracing with the other end of gangbar articulates and sets up on the second connecting piece, when the seat pocket bears the heavy object, the actuating lever receives along the rotatory power of side direction, at this moment second connecting piece forms the jam to actuating lever and connecting rod for the chair frame can stable keep expanding the state; when the chair frame needs to be folded, the driving rod is rotated downwards along the outer side, so that folding and shrinking can be completed.

Description

Quick folding chair frame

Technical Field

The application relates to the field of seats, in particular to a quick folding seat frame.

Background

The folding chair is very popular with people due to the small volume after being folded. However, in the actual use process, the folding chair is usually locked by using the locking mechanism, so that folding of the folding chair in the use process is prevented, and when the locking mechanism is locked, the locking failure often occurs, so that the folding chair is unstable in the use process, potential safety hazards are easy to generate, people are required to check again, and when the folding chair needs to be folded, the locking mechanism also needs to be released, so that the unfolding and folding processes of the folding chair become very complicated.

Disclosure of Invention

To the not enough of prior art, this application provides a quick folding chair frame, can be when the chair pocket bears the heavy object, and the structure can be more stable and need not locking mechanism and assist, and it is more convenient to fold.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a quick folding chair frame, includes the diagonal bracing mechanism that sets up relatively and connects two gangbars of diagonal bracing mechanism, diagonal bracing mechanism includes two diagonal bracing that set up relatively and two bottom hack levers that set up relatively, the gangbar is crisscross and articulated each other, two the chassis pole is articulated to be set up on first connecting piece with the one end of gangbar, diagonal bracing one end with the other end of chassis pole is articulated, the other end of diagonal bracing with the other end of gangbar is articulated to be set up on the second connecting piece, still includes actuating lever and connecting rod, actuating lever one end is articulated to be set up on the second connecting piece, connecting rod one end is articulated to be set up the other end on the gangbar with the actuating lever is articulated.

In the above technical scheme, further, the hinge point of the connecting rod and the linkage rod is close to the first connecting piece, and the hinge point of the connecting rod and the driving rod is arranged in the middle of the driving rod.

In the above technical scheme, further, the folding chair frame can switch to unfolding state and folding state, when the folding chair frame is in the unfolding state, the tip of actuating lever sets up the third connecting piece and is used for the fixing base pocket, the actuating lever joint is in the first draw-in groove of second connecting piece, the connecting rod joint is in the second draw-in groove of second connecting piece, the actuating lever with the connecting rod is 180 degrees contained angles approximately.

In the above technical scheme, further, when the seat pocket bears the heavy object, the actuating lever receives along the rotatory power of side direction, and first draw-in groove is right this moment the actuating lever is spacing, and the second draw-in groove is spacing the motion trend of connecting rod simultaneously for the chair frame can not take place to rock.

In the above technical scheme, further, when the connecting rod is placed in the second clamping groove, an included angle alpha formed between the two linkage rods is maximum, the two chassis rods are positioned on the same straight line, and the two diagonal braces and the chassis rods are isosceles triangles.

In the above technical scheme, further, a fourth connecting piece is fixedly arranged at one end of the underframe rod, and the diagonal brace is hinged on the fourth connecting piece.

In the above technical scheme, further, the first connecting piece and the fourth connecting piece are respectively provided with a first contact part and a second contact part, and when the folding chair frame is in the unfolding state, the first contact part and the second contact part are placed in the same plane to be contacted with the bottom surface and supported by force.

In the above technical scheme, further, when the folding chair frame is in a folded state, the diagonal brace and the underframe rod are approximately in an included angle of 180 degrees, the two first connecting pieces are close to each other and form a supporting surface, and the two second connecting pieces are opposite to each other and are provided with third contact parts which are close to each other and form the supporting surface.

In the above technical scheme, further, when the folding chair frame is switched from the unfolding state to the folding state, the driving rod rotates downwards along the outer side and simultaneously the linkage connecting rod is pressed downwards, so that the linkage rods are close to each other and are folded, and meanwhile, the included angle between the inclined stay rod and the underframe rod is enlarged and is folded towards the middle part.

The beneficial effects of this application lie in: when the seat pocket bears a weight, the driving rod is subjected to a force of rotating along the lateral direction, and the second connecting piece is used for blocking the driving rod and the connecting rod, so that the chair frame can be stably kept in an unfolding state; when the chair frame needs to be folded, the driving rod is rotated downwards along the outer side, so that folding and shrinking can be completed.

Drawings

The present application is further described below with reference to the drawings and examples.

Fig. 1 is a schematic structural view of an elevation of a seat pocket of the present application.

Fig. 2 is a schematic structural view of the deployed state of the present application.

Fig. 3 is an enlarged schematic view of the structure of fig. 2 A-A of the present application.

Fig. 4 is an enlarged schematic view of the B-B structure of fig. 2 of the present application.

Fig. 5 is a schematic structural view of the present application switched to the folded state.

Fig. 6 is an enlarged schematic view of the C-C structure of fig. 5 of the present application.

Fig. 7 is an enlarged schematic view of the D-D structure of fig. 5 of the present application.

Fig. 8 is a schematic structural view of the developed state of the present application.

Fig. 9 is an enlarged schematic view of the E-E of fig. 8 of the present application.

Fig. 10 is an enlarged schematic view of the F-F structure of fig. 8 of the present application.

In the figure, 1, diagonal bracing mechanism, 11, diagonal bracing rod, 12, underframe rod, 2, linkage rod, 3, first connecting piece, 31, first contact part, 4, driving rod, 5, connecting rod, 6, second connecting piece, 61, first clamping groove, 62, second clamping groove, 63, third contact part, 7, third connecting piece, 8, fourth connecting piece, 81, second contact part, 9 and seat pocket.

Detailed Description

Referring to fig. 1-10, the quick folding chair frame comprises a diagonal bracing mechanism 1 and two linkage rods 2, wherein the diagonal bracing mechanism 1 and the two linkage rods 2 are oppositely arranged, the diagonal bracing mechanism 1 comprises two diagonal bracing rods 11 and two bottom rack rods 12 which are oppositely arranged, the linkage rods 2 are mutually intersected and hinged, the two bottom rack rods 12 and one end of the linkage rod 2 are hinged on a first connecting piece 3, one end of each diagonal bracing rod 11 is hinged with the other end of each bottom rack rod 12, the other end of each diagonal bracing rod 11 is hinged with the other end of each linkage rod 2 on a second connecting piece 6, the quick folding chair frame further comprises a driving rod 4 and a connecting rod 5, one end of each driving rod 4 is hinged on the second connecting piece 6, and one end of each connecting rod 5 is hinged on the linkage rod 2, and the other end of each connecting rod is hinged with the driving rod 4.

The hinge point of the connecting rod 5 and the linkage rod 2 is close to the first connecting piece 3, and the hinge point of the connecting rod 5 and the driving rod 4 is arranged in the middle of the driving rod 4.

The folding chair frame can be switched to an unfolding state and a folding state, when the folding chair frame is placed in the unfolding state, the end part of the driving rod 4 is provided with a third connecting piece 7 for fixing the seat pocket 9, the driving rod 4 is clamped in the first clamping groove 61 of the second connecting piece 6, the connecting rod 5 is clamped in the second clamping groove 62 of the second connecting piece 6, and the driving rod 4 and the connecting rod 5 are approximately 180-degree included angles.

When seat pocket 9 bears the heavy object, actuating lever 4 receives along the rotatory power of side direction, and first draw-in groove 61 is right at this moment actuating lever 4 is spacing, and second draw-in groove 62 is spacing to the motion trend of connecting rod 5 simultaneously for the chair frame can not take place to rock, when connecting rod 5 is arranged in second draw-in groove 62, two contained angle alpha that forms between the gangbar 2 is biggest, two chassis pole 12 are in on the same straight line, two diagonal brace 11 with chassis pole 12 is isosceles triangle.

In order to maximize the contact area between the chair frame and the bottom surface in the unfolded state, a fourth connecting piece 8 is fixedly arranged at one end of the underframe rod 12, the diagonal brace 11 is hinged on the fourth connecting piece, the first connecting piece 3 and the fourth connecting piece 8 are respectively provided with a first contact part 31 and a second contact part 81, and when the folding chair frame is placed in the unfolded state, the first contact part 31 and the second contact part 81 are placed in the same plane, contact with the bottom surface and are supported by force.

When the folding chair frame is switched from the unfolding state to the folding state, the driving rod 4 rotates downwards along the outer side, and the linkage connecting rod 5 is pressed downwards, so that the linkage rod 2 is close to each other and is folded, and meanwhile, the included angle between the inclined support rod 11 and the underframe rod 12 is enlarged and is closed towards the middle.

When the folding chair frame is in a folded state, the inclined stay bars 11 and the underframe bars 12 form an included angle of approximately 180 degrees, the two first connecting pieces 3 are close to each other to form a supporting surface, the two second connecting pieces 6 are opposite to each other, the third contact portions 63 are close to each other to form a supporting surface, the chair frame can be turned over, and the second connecting pieces 6 are in contact with the ground to enable the chair frame to stand on the bottom surface.

According to the above design: when the seat pocket bears a weight, the driving rod is subjected to a force of rotating along the lateral direction, and the second connecting piece is used for blocking the driving rod and the connecting rod, so that the chair frame can be stably kept in an unfolding state; when the chair frame needs to be folded, the driving rod is rotated downwards along the outer side, so that folding and shrinking can be completed.

The foregoing description is only a preferred embodiment of the present application and is not intended to limit the present application in any way, and simple modifications, equivalent changes or modifications can be made without departing from the technical solutions of the present application, all falling within the scope of the present application.

Claims (8)

1. The quick folding chair frame is characterized by comprising a diagonal bracing mechanism (1) and two linkage rods (2) which are oppositely arranged and are connected with the diagonal bracing mechanism (1), wherein the diagonal bracing mechanism (1) comprises two diagonal bracing rods (11) which are oppositely arranged and two bottom hack levers (12) which are oppositely arranged, the linkage rods (2) are mutually crossed and hinged, the two bottom rest rods (12) are hinged with one ends of the linkage rods (2) on a first connecting piece (3), one ends of the diagonal bracing rods (11) are hinged with the other ends of the bottom rest rods (12), the other ends of the diagonal bracing rods (11) are hinged with the other ends of the linkage rods (2) on a second connecting piece (6), the quick folding chair frame also comprises a driving rod (4) and a connecting rod (5), one ends of the driving rod (4) are hinged on the second connecting piece (6), and one ends of the connecting rod (5) are hinged with the other ends of the driving rod (4); the folding chair frame can be switched to an unfolding state and a folding state, when the folding chair frame is placed in the unfolding state, a third connecting piece (7) is arranged at the end part of the driving rod (4) and used for fixing a seat pocket (9), the driving rod (4) is clamped in a first clamping groove (61) of the second connecting piece (6), and the connecting rod (5) is clamped in a second clamping groove (62) of the second connecting piece (6).

2. A quick folding chair according to claim 1, characterized in that the hinge point of the connecting rod (5) and the linkage rod (2) is close to the first connecting piece (3), and the hinge point of the connecting rod (5) and the driving rod (4) is arranged in the middle of the driving rod (4).

3. A quick folding chair according to claim 1, characterized in that when the seat pocket (9) is subjected to a heavy load, the driving rod (4) is subjected to a force rotating sideways, the driving rod (4) is limited by the first clamping groove (61) and the movement tendency of the connecting rod (5) is limited by the second clamping groove (62) at the same time, so that the chair frame does not shake, and the driving rod (4) and the connecting rod (5) form an included angle of approximately 180 degrees.

4. The quick folding chair frame according to claim 1, wherein when the connecting rod (5) is placed in the second clamping groove (62), an included angle alpha formed between the two linkage rods (2) is largest, the two underframe rods (12) are positioned on the same straight line, and the two diagonal braces (11) and the underframe rods (12) are isosceles triangles.

5. A quick folding chair frame according to claim 1, characterized in that a fourth connecting piece (8) is fixedly arranged at one end of the underframe bar (12), and the diagonal brace (11) is hinged on the fourth connecting piece.

6. The quick folding chair as claimed in claim 5, wherein the first connecting member (3) and the fourth connecting member (8) are respectively provided with a first contact portion (31) and a second contact portion (81), and when the folding chair is in the unfolded state, the first contact portion (31) and the second contact portion (81) are placed in the same plane to contact with the bottom surface and are supported by force.

7. A quick folding chair as claimed in claim 1, characterized in that, when the folding chair is in the folded state, the diagonal brace (11) and the underframe bar (12) are substantially at an angle of 180 degrees, the two first connecting pieces (3) are adjacent to each other and form a supporting surface, and the two second connecting pieces (6) are opposite to each other and are provided with third contact portions (63) adjacent to each other and form a supporting surface.

8. The quick folding chair frame according to claim 1, wherein when the folding chair frame is switched from the unfolded state to the folded state, the driving rod (4) rotates downwards along the outer side while the linkage connecting rod (5) is pressed downwards, so that the linkage rods (2) are close to each other and are folded, and meanwhile, the included angle between the inclined supporting rod (11) and the underframe rod (12) is enlarged and is folded towards the middle.

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