CN220384668U - Folding chair - Google Patents

Abstract

The utility model relates to the technical field of seats, in particular to a folding chair, which comprises two support foot frames arranged side by side in the transverse direction and a telescopic mechanism which is arranged between the two support foot frames and can transversely stretch, wherein the transverse stretching action of the telescopic mechanism drives the two support foot frames to transversely close or expand, the telescopic mechanism is of a scissor type connecting rod structure, the scissor type connecting rod structure comprises at least two intersecting arms which are sequentially connected in the transverse direction, and the intersecting arms comprise two connecting rod arms which are mutually and rotatably connected; one connecting rod arm is rotationally connected with the supporting foot rest, the other connecting rod arm is connected with the supporting foot rest through a connecting rod, and two ends of the connecting rod are respectively rotationally connected with the supporting foot rest and the other connecting rod arm; compared with the resistance force born by the sliding part in the up-and-down sliding mode, the resistance force born by the scheme in the folding or unfolding process is smaller, so that the folding or unfolding of the seat can be realized more labor-saving.

Description

Folding chair

Technical Field

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

Background

The folding chair can be folded, the chair can be unfolded when in use, and can be folded and folded when in idle, so that occupied space is reduced, and the folding chair is convenient to carry, and more than the existing director chairs are folding chairs.

In the related art, some foldable director chairs mostly adopt a structure of connecting rods matched with sliding sleeves to realize a folding function, for example, a portable folding chair is disclosed in a patent document with a publication number of CN 205197533U.

In the above patent document, mainly, a plurality of pipe fittings are used as a connecting rod structure and are matched with a sliding piece to realize connection between two leg pipes, and in the folding or unfolding process of a seat, the connection can be realized by means of the sliding piece to slide up and down on the leg pipes, and the mode has the following defects: the sliding piece is arranged on the foot tube in a sliding way, and the friction resistance between the sliding piece and the foot tube is large during sliding, so that the sliding piece is laborious when unfolding or folding the seat; in addition, in order to enable the sliding piece to slide on the foot tube smoothly, a certain gap is formed between the sliding piece and the foot tube, so that the stability of the seat is poor.

Disclosure of Invention

In order to solve at least one technical problem mentioned in the background art, an object of the present utility model is to provide a folding chair.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the folding chair comprises two support foot frames which are arranged side by side in the transverse direction, and a telescopic mechanism which is arranged between the two support foot frames and can transversely stretch, wherein the transverse stretching action of the telescopic mechanism drives the two support foot frames to transversely close or expand, the telescopic mechanism is of a scissor type connecting rod structure, the scissor type connecting rod structure comprises at least two intersecting arms which are sequentially connected in the transverse direction, and the intersecting arms comprise two connecting rod arms which are connected with each other in a rotating way; one of the two connecting rod arms of the cross arm adjacent to the support foot rest is rotationally connected with the support foot rest, the other connecting rod arm is connected with the support foot rest through a connecting rod, and two ends of the connecting rod are respectively rotationally connected with the support foot rest and the other connecting rod arm.

Compared with the prior art, the scheme has the advantages that:

in the scheme, a scissor type connecting rod structure is adopted between two support foot frames as a telescopic mechanism to realize the folding or unfolding of the two support foot frames, and in the scheme, the connection between the support foot frames and the cross arms is realized mainly by virtue of connecting rods, the whole folding or unfolding process is realized mainly by virtue of the rotation of the cross arms and the connecting rods, and the whole telescopic mechanism and the connecting rods do not need to slide up and down on the support foot frames; compared with the existing way of arranging the sliding piece which slides up and down, the method comprises the following steps:

firstly, the folding or unfolding is realized by the rotation between the connecting rod and the cross arm basically, and compared with the resistance born by the sliding part in the up-and-down sliding mode, the resistance born by the sliding part in the folding or unfolding process is smaller, so that the folding or unfolding of the seat can be realized more labor-saving.

Secondly, just because the sliding part is not required to be arranged in the scheme, the problem of unstable seat caused by large gap between the sliding part and the supporting foot rest is avoided.

Preferably, the scissor type connecting rod structure comprises two crossed arms, wherein the two connecting rod arms of the crossed arms are a first connecting rod arm and a second connecting rod arm respectively; in the two crossed arms, the first ends of the two first link arms are rotationally connected, and the second ends of the two first link arms are respectively rotationally connected to the two support foot frames; the first ends of the two second connecting rod arms are rotationally connected; one end of the connecting rod is rotationally connected with the second connecting rod, and the other end of the connecting rod is rotationally connected to the supporting foot rest.

Preferably, in the unfolded state of the folding chair, the first ends of the two second link arms abut against each other to limit the two second link arms from turning downward and relatively.

Preferably, in a state that the first ends of the two second link arms are abutted against each other, an included angle α is formed between the two second link arms, and the included angle α is greater than or equal to 170 ° and less than 180 °.

Preferably, the telescopic mechanisms comprise two groups, and the two groups of telescopic mechanisms are respectively arranged at the front side and the rear side of the supporting foot rest; in the two telescopic mechanisms, at least one group of two crossed arms adjacent to the same supporting foot rest is connected with two connecting rod arms connected with the connecting rod through a cross rod.

Preferably, the folding chair further comprises a table plate, wherein the table plate is arranged on one side of the support foot rest and is linked with the telescopic mechanism, and when the telescopic mechanism is unfolded, the table plate is unfolded on one side of the support foot rest; when the telescopic mechanism is folded, the table plate is folded on the supporting foot rest.

Preferably, the table board is rotatably connected to the supporting foot stand around a first rotation axis, and the first rotation axis is horizontal and perpendicular to the transverse direction; a linkage rod is arranged between the table plate and the telescopic mechanism; one end of the linkage rod is rotationally connected with the table plate, and a connecting rod arm which is rotationally connected with the connecting rod is rotationally connected with the other end of the linkage rod in the cross arm adjacent to the supporting foot rest.

Preferably, the folding chair further comprises an armrest frame connected to the top of the support foot frame around a second rotation axis, wherein the second rotation axis is horizontal and vertical to the transverse direction; the armrest frame is turned relative to the support foot frame to enable folding or unfolding, and the folding chair further comprises a retaining structure for retaining the armrest frame in an unfolded state when the armrest frame is unfolded.

Preferably, the top of the armrest frame is provided with a back support rod extending vertically, the folding chair further comprises a soft surface support, the soft surface support is at least partially arranged between two support foot frames to form a seat cushion, and the soft surface support is at least partially arranged between the back support rods on the two armrest pieces to form a back cushion; in the unfolding state of the armrest frame and the folding chair, the back cushion acts on the two back support rods to limit the two back support rods to turn over to the side far away from each other.

Preferably, the back strut is rotatably connected to the top of the armrest frame about a third axis of rotation, the third axis of rotation being parallel to the lateral direction.

Additional advantages and effects of the utility model are set forth in the detailed description and drawings.

Drawings

Fig. 1 is a schematic view of a folding chair according to the present embodiment in an unfolded state;

FIG. 2 is a front view of the folding chair of the present embodiment in an unfolded state;

FIG. 3 is a schematic view showing a structure of the folding chair according to the embodiment in a folding process;

FIG. 4 is a schematic view of the support stand in a folded condition;

FIG. 5 is a schematic view of the structure of the support foot rest and back strut in a folded condition;

fig. 6 is a schematic structural view of the present embodiment in a fully folded state.

Detailed Description

The technical solutions of the embodiments of the present utility model will be explained and illustrated below with reference to the drawings of the embodiments of the present utility model, but the following embodiments are only preferred embodiments of the present utility model, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present utility model.

In the following description, directional or positional relationships such as the terms "inner", "outer", "upper", "lower", "left", "right", etc., are presented for convenience in describing the embodiments and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

Referring to fig. 1-6, the present embodiment provides a folding chair, which includes two support legs 1 arranged side by side in a transverse direction, and a telescopic mechanism arranged between the two support legs 1 and capable of extending and retracting in the transverse direction, wherein the transverse direction can refer to a direction indicated by an L portion in fig. 1.

The transverse telescopic action of the telescopic mechanism drives the two support foot frames 1 to be folded or unfolded transversely, specifically, when the telescopic mechanism is contracted transversely, the two support foot frames 1 are folded gradually, and when the telescopic mechanism is unfolded transversely, the two support foot frames 1 are far away gradually so as to be unfolded continuously.

The telescopic machanism is for cutting fork type connecting rod structure, combines the figure 3 to show, cut fork type connecting rod structure and include at least two cross arms 2 that connect gradually along transversely, cross arm 2 includes two connecting rod arms of mutual swivelling joint, and so two connecting rod arms realize the folding or the expansion of two through mutual rotation, and then realize the flexible action of whole telescopic machanism.

Two link arms adjacent to the cross arms 2 of the support foot rest 1, i.e. the two cross arms 2 at both ends of the telescopic mechanism, the two cross arms 2 mainly serve for connection with the two support foot rest 1, respectively.

Of the two link arms of the cross arm 2 adjacent to the support stand 1, one link arm is rotatably connected to the support stand 1, and the other link arm is connected to the support stand 1 through a connecting rod 3.

Specifically, two ends of the connecting rod 3 are respectively connected with the supporting foot rest 1 and the other connecting rod arm in a rotating way.

In the embodiment, the whole folding or unfolding process is mainly realized by virtue of the rotation of the cross arm 2 and the connecting rod 3, and the whole telescopic mechanism and the connecting rod 3 do not need to slide up and down on the supporting foot rest 1; compared with the existing way of arranging the sliding piece which slides up and down, the method comprises the following steps:

firstly, the folding or unfolding is realized by the rotation between the connecting rod 3 and the cross arm 2, and the resistance during the folding or unfolding is smaller than that of the sliding part sliding up and down, so that the folding or unfolding of the seat can be realized with more labor saving

It should be understood that in this embodiment, the number of the cross arms 2 forming the scissor link structure is mainly selected according to actual needs, and may be two or more, for example, in this embodiment, a specific description is given by taking the scissor link structure using two cross arms 2 as an example:

in this embodiment, as shown in fig. 3, the two link arms constituting the cross arm 2 are respectively referred to as a first link arm 21 and a second link arm 22, the point at which the first link arm 21 and the second link arm 22 are rotatably connected is referred to as an axial point R0, and the first link arm 21 and the second link arm 22 can rotate around the axial point R0.

As shown in fig. 3, in the two cross arms 2 in the same telescopic mechanism, the first ends of the two first link arms 21 are rotatably connected, and the second ends of the two first link arms 21 are rotatably connected to the two support legs 1 to form a connection point R1, preferably, the second ends of the first link arms 21 are rotatably connected to the upper positions of the support legs 1.

The first ends of the two second link arms 22 are rotatably connected to form a connection point R2; one end of the connecting rod 3 is rotationally connected with the second connecting rod to form a connecting point R3, and the other end of the connecting rod 3 is rotationally connected with the supporting foot rest 1 to form a connecting point R4; wherein R1 is located above R4 and R0 is located between R2 and R3.

When the folding is performed, the second link arms 22 are turned over, so that the two second link arms 22 are turned over and folded gradually, and in the process, the two first link arms 21 and the connecting rod 3 are driven to rotate, so that the two support foot frames 1 are continuously folded towards the middle, and finally the complete folding is realized, and the state shown in fig. 6 can be referred to.

When the folding chair is unfolded, the supporting foot rest 1 is pulled to enable the two supporting foot rests 1 to be kept away from each other continuously, at the moment, the first connecting rod arm 21, the second connecting rod arm 22 and the connecting rod 3 rotate along with the supporting foot rest, so that the whole folding chair is unfolded continuously, finally, the first ends of the two second connecting rod arms 22 are propped against to limit the two second connecting rod arms 22 to continuously and downwards turn relatively, and at the moment, the whole folding chair enters an unfolded state, as shown in fig. 1 and 2.

In order to make the two second link arms 22 have a certain self-locking property in the unfolded state of the folding chair, in this embodiment, in the state that the first ends of the two second link arms 22 are abutted, as shown in fig. 2, an included angle α is formed between the two second link arms 22, and the included angle α is greater than or equal to 170 ° and less than 180 °.

Specifically, the first ends of the two second link arms 22 are fixedly connected with positioning seats 221, the lower parts of the two positioning seats 221 are hinged together, and in the unfolded state, the upper parts of the two positioning seats 221 are propped against each other to form an included angle alpha.

In this embodiment, as shown in fig. 1 and 3, the telescopic mechanisms include two groups, and the two groups of telescopic mechanisms are respectively disposed on the front and rear sides of the support stand 1; in the two telescopic mechanisms, at least one group of two crossed arms 2 adjacent to the same supporting foot rest 1 are connected through a cross rod 23, for example, in the embodiment, the cross rod 23 is arranged between the two crossed arms 2 positioned on the right side by taking the view of fig. 1 as an example, namely, two ends of the cross rod 23 are respectively fixed with two second link arms 22; at this time, the cross bar 23 is equivalent to an acting bar, or an operation bar, and the user presses the cross bar 23 to drive the connection point of the two second link arms 22 to tilt up, so that the telescopic mechanism is contracted.

The folding chair in this embodiment further comprises a table 4, wherein the table 4 is installed on one side of the support stand 1 and is linked with the telescopic mechanism, and when the telescopic mechanism is unfolded, as shown in fig. 1, the table 4 is unfolded on one side of the support stand 1; when the telescopic mechanism is folded, as shown in fig. 4, the table 4 is folded to the support stand 1, and in short, the table 4 moves along with the movement of the telescopic mechanism.

Specifically, as shown in fig. 1, the table 4 is rotatably connected to the support stand 1 about a first rotation axis, which may be shown by reference to a portion L1 in fig. 1, and the first rotation axis is horizontal and perpendicular to the transverse direction; a linkage rod 41 is arranged between the table plate 4 and the telescopic mechanism; one end of the linkage rod 41 is rotatably connected with the table plate 4, and in the cross arm 2 adjacent to the support foot rest 1, a link arm rotatably connected with the connecting rod 3 is rotatably connected with the other end of the linkage rod 41, that is, a second link arm 22 adjacent to the support foot rest 1 on which the table plate 4 is mounted is rotatably connected with the other end of the linkage rod 41.

In this way, in the folding process of the two support foot frames 1 by the telescopic mechanism, the second link arm 22 pulls the table plate 4 through the link rod 41, so that the table plate 4 turns downwards relative to the support foot frames 1, and finally is gathered at the side of the support foot frames 1 to realize the folding of the table plate 4; when the telescopic mechanism stretches and spreads the two support foot frames 1, the second link arm 22 pushes the table plate 4 through the link rod 41, so that the table plate 4 turns upwards relative to the support foot frames 1, and finally spreads at the side of the support foot frames 1.

As shown in fig. 1 and 3, the folding chair further comprises an armrest frame 7 connected to the top of the support foot rest 1 about a second axis of rotation, indicated by L2 in fig. 1, which is horizontal and perpendicular to the transverse direction; specifically, a hinge seat 71 is arranged at the top of the support foot rest 1, and the lower part of the armrest frame 7 is rotationally connected to the hinge seat 71; the armrest frame 7 can be turned over relative to the support foot rest 1 to realize folding or unfolding, and the armrest frame 7 is gathered on the outer side of the support foot rest 1 in a folded state (a state shown in fig. 6); the armrest frame 7 is erected substantially on top of the support foot stand 1 in the unfolded state (as shown in fig. 1) to be used as an armrest.

The folding chair further includes a holding structure for holding the armrest frame 7 in the unfolded state when the armrest frame 7 is unfolded.

Specific: referring to fig. 1 and 4, the top of the armrest frame 7 is provided with a back support rod 5 extending vertically, the folding chair further comprises a soft surface support 6, and the soft surface support 6 can adopt a cloth cover structure and the like.

As shown in fig. 1, the soft surface support 6 is at least partially disposed between the two support legs 1 to form a seat cushion 62, and the soft surface support 6 is at least partially disposed between the back struts 5 on the two armrest members to form a back cushion 61; in the unfolded state of the armrest frame 7 and the folding chair, as shown in fig. 1, the back cushion 61 acts on the two back struts 5 to limit the two back struts 5 to turn along with the armrest frame 7 to a side far away from each other.

As shown in fig. 1, when the armrest frame 7 is unfolded, the inner side of the armrest frame 7 abuts against the hinge seat 71, the armrest frame 7 is limited to be turned inwards by the hinge seat 71, and under the tensioning action of the back pad 61, the back pad 61 pulls the two back struts 5, so as to limit the armrest frame 7 to be turned outwards, and at this time, the back pad 61 and the hinge seat 71 together form the holding structure, so that the armrest frame 7 can be kept in an unfolded state when being unfolded.

In addition, in order to enable the back support rod 5 to be folded, in this embodiment, as shown in fig. 1 and 4, the back support rod 5 is rotatably connected to the top of the armrest frame 7 around a third rotation axis, and the third rotation axis can be shown by reference to L3 in fig. 1; the third axis of rotation is parallel to the transverse direction so that the back strut 5 can be turned down to fold over the armrest frame 7 (as shown in fig. 5 and 6).

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (10)

1. The folding chair comprises two support foot frames which are arranged side by side in the transverse direction, and a telescopic mechanism which is arranged between the two support foot frames and can transversely stretch, wherein the transverse stretching action of the telescopic mechanism drives the two support foot frames to transversely close or expand; one of the two connecting rod arms of the cross arm adjacent to the support foot rest is rotationally connected with the support foot rest, the other connecting rod arm is connected with the support foot rest through a connecting rod, and two ends of the connecting rod are respectively rotationally connected with the support foot rest and the other connecting rod arm.

2. A folding chair as claimed in claim 1, wherein the scissor linkage comprises two intersecting arms, the two linkage arms of the intersecting arms being a first linkage arm and a second linkage arm, respectively; in the two crossed arms, the first ends of the two first link arms are rotationally connected, and the second ends of the two first link arms are respectively rotationally connected to the two support foot frames; the first ends of the two second connecting rod arms are rotationally connected; one end of the connecting rod is rotationally connected with the second connecting rod, and the other end of the connecting rod is rotationally connected to the supporting foot rest.

3. A folding chair as claimed in claim 2 wherein in the unfolded condition the first ends of the two second link arms abut to limit the two second link arms from tipping downwardly relative to each other.

4. A folding chair as claimed in claim 3, wherein the first ends of the second link arms are in abutment with each other, and an angle α is formed between the second link arms, the angle α being 170 ° or more and less than 180 °.

5. The folding chair according to claim 1, wherein the telescopic mechanisms comprise two groups, and the two groups of telescopic mechanisms are respectively arranged on the front side and the rear side of the support foot rest; in the two telescopic mechanisms, at least one group of two crossed arms adjacent to the same supporting foot rest is connected with two connecting rod arms connected with the connecting rod through a cross rod.

6. The folding chair of claim 1, further comprising a table mounted to one side of the support leg and coupled to the telescoping mechanism, the table being deployed to one side of the support leg when the telescoping mechanism is deployed; when the telescopic mechanism is folded, the table plate is folded on the supporting foot rest.

7. The folding chair as in claim 6, wherein the table is pivotally connected to the support leg about a first axis of rotation, the first axis of rotation being horizontally perpendicular to the lateral direction; a linkage rod is arranged between the table plate and the telescopic mechanism; one end of the linkage rod is rotationally connected with the table plate, and a connecting rod arm which is rotationally connected with the connecting rod is rotationally connected with the other end of the linkage rod in the cross arm adjacent to the supporting foot rest.

8. The folding chair as in claim 1, further comprising an armrest frame attached to the top of the support leg about a second axis of rotation, the second axis of rotation being horizontal and perpendicular to the lateral direction; the armrest frame is turned relative to the support foot frame to enable folding or unfolding, and the folding chair further comprises a retaining structure for retaining the armrest frame in an unfolded state when the armrest frame is unfolded.

9. The folding chair of claim 8, wherein the top of the armrest frame is provided with a vertically extending back support bar, the folding chair further comprises a soft surface support, the soft surface support is at least partially arranged between two support foot frames to form a seat cushion, and the soft surface support is at least partially arranged between the back support bars on the two armrest pieces to form a back cushion; in the unfolding state of the armrest frame and the folding chair, the back cushion acts on the two back support rods to limit the two back support rods to turn over to the side far away from each other.

10. The folding chair as in claim 9, wherein the back strut is pivotally connected to the top of the armrest frame about a third axis of rotation, the third axis of rotation being parallel to the lateral direction.