CN210121000U

CN210121000U - Folding chair

Info

Publication number: CN210121000U
Application number: CN201920976203.2U
Authority: CN
Inventors: 吴冬冬
Original assignee: KUNSHAN HUALIAN PLASTIC HARDWARE Co Ltd
Current assignee: KUNSHAN HUALIAN PLASTIC HARDWARE Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-03-03
Anticipated expiration: 2029-06-26

Abstract

The utility model relates to a folding chair, which comprises a supporting frame, a seat board and a backrest which are fixed on the supporting frame, and a fixing piece which is arranged on the back surface of the seat board and is arranged at an interval with the seat board, wherein the supporting frame comprises a front bracket and a rear bracket which are connected in a pivoting way; a sliding groove is formed between the fixing piece and the seat plate, the front support comprises a supporting rod which penetrates through the sliding groove and can move back and forth in the sliding groove, a limiting mechanism which is arranged close to the front end of the sliding groove is formed on the back surface of the seat plate, when the folding chair is completely unfolded, the supporting rod is abutted against the limiting mechanism, and the limiting mechanism is used for limiting the supporting rod to move forwards. The utility model discloses not only avoided among the prior art mounting front end to concentrate the atress and leaded to its problem that drops, solved bracing piece and bedplate moreover and supported the problem that the deformation and wearing and tearing each other, improved product performance, prolonged folding chair's life.

Description

Folding chair

Technical Field

The utility model relates to a seat especially relates to a folding chair.

Background

Since the invention, the folding chair has the advantages of light structure, capability of being stacked, convenience for carrying and storage, and enjoying of people. Whether in the home, office, restaurant or other location, are in widespread use.

The support frame of the existing folding chair usually adopts a foldable X-shaped support frame to support the seat board and fix the backrest. The back of the seat board is generally provided with a fixing piece fixed by rivets in the front and back directions, the front bracket of the support frame can slide between the fixing piece and the seat board, and the fixing piece limits the front and back displacement of the front bracket and bears the pressure. When the folding chair is in an unfolded state and the seat board is pressed downwards under stress, the supporting rod of the front support is abutted against the front end rivet of the fixing piece, and the downward pressure of the seat board is concentrated at the supporting position of the supporting rod and the seat board and the abutting position of the supporting rod and the front end rivet. Because the local stress area of bracing piece and bedplate, bracing piece and front end rivet is less and the pressurized is great, long-term the use very easily leads to the contact department atress wearing and tearing of support frame and bedplate to warp and the front end rivet can the atress warp pine takes off even, and the bedplate can be influenced the outward appearance by pushing up white, thereby also can warp the effect that can't reach the support bedplate, influences the life of whole folding chair.

Therefore, in order to solve the above problems, a new folding chair must be designed.

SUMMERY OF THE UTILITY MODEL

In order to achieve the purpose, the utility model provides a folding chair, which comprises a supporting frame, a seat board and a backrest which are fixed on the supporting frame, and a fixing piece which is arranged on the back of the seat board, wherein the supporting frame comprises a front bracket and a rear bracket which are connected in a pivoting way; a sliding groove is formed between the fixing piece and the seat plate, the front support comprises a supporting rod which penetrates through the sliding groove and can move back and forth in the sliding groove, a limiting mechanism which is arranged close to the front end of the sliding groove is formed on the back surface of the seat plate, when the folding chair is completely unfolded, the supporting rod is abutted against the limiting mechanism, and the limiting mechanism is used for limiting the supporting rod to move forwards.

As a further improvement of the present invention, the limiting mechanism includes a transversely extending baffle.

As a further improvement of the utility model, a plurality of first profiling glue positions which are sequentially arranged at intervals along the transverse direction are formed at the rear side of the baffle; when the folding chair is completely unfolded, the support rod is propped against the first profiling glue position.

As a further improvement, the front edge of the seat plate is bent downwards to form a flange, and a second copying glue is formed between the flange and the baffle to assist the stress.

As a further improvement of the present invention, the limiting mechanism further comprises a groove formed at the back of the seat plate, the groove is located at the rear side of the baffle and adjacent to the baffle, and makes when the folding chair is completely unfolded, the support rod is abutted against the groove and the first baffle.

As a further improvement of the utility model, the back face of the seat board faces towards the sliding groove is convexly extended to form a convex rib extending from the front to the back.

As a further improvement of the utility model, the transverse interval of the convex ribs is at least 2.

As a further improvement of the utility model, the limiting mechanism comprises a groove formed on the back of the seat board.

As a further improvement of the present invention, a stopping portion is formed at the rear end of the fixing member, and a position of the fixing member adjacent to the rear end of the sliding groove is protruded toward the seat plate to form a limiting protrusion; the limiting protrusions and the stopping parts are mutually spaced, so that the supporting rod is clamped between the limiting protrusions and the stopping parts when the folding chair is completely folded.

As a further improvement of the utility model, the fixing member is provided with at least two positioning holes, and the seat plate is provided with mounting holes corresponding to the positioning holes; the folding chair also comprises a positioning piece which passes through the positioning hole and is matched with the mounting hole.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model has the advantages that the limiting mechanism is arranged, so that when the folding chair is completely unfolded, the supporting rod is abutted against the limiting mechanism, so that the acting force between the supporting rod and the seat plate is mainly concentrated at the abutted part of the supporting rod and the limiting mechanism, and the problem that the front end of the fixing piece is concentrated in stress to cause deformation or falling off in the prior art is avoided; compared with the prior art, the utility model increases the stress area of the support bar and the seat plate, thereby avoiding the problems of mutual pressing deformation and abrasion of the support bar and the seat plate to the maximum extent, improving the service performance of the product and prolonging the service life of the folding chair; furthermore, the utility model discloses simple structure and convenient operation.

Drawings

FIG. 1 is a schematic structural view of the folding chair of the present invention when fully unfolded;

FIG. 2 is a schematic structural view of the folding chair of the present invention when completely folded;

FIG. 3 is a schematic view of the folding chair of the present invention in another angle when it is fully unfolded;

FIG. 4 is a schematic view of the back structure of the seat plate of the present invention;

FIG. 5 is a schematic view of the fixing member of the present invention

Fig. 6 is a schematic structural view of the fixing member of the present invention at another angle;

100-folding chair; 110-a chute; 1-a support frame; 11-a front support; 111-a support bar; 12-a rear bracket; 2-a seat board; 21-a baffle plate; 22-a first profiling glue site; 23-flanging; 24-a second profiling glue site; 25-a groove; 26-a convex rib; 27-mounting holes; 3-a backrest; 4-a fixing piece; 41-a stop; 42-a limit bump; 43-locating holes.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art based on these embodiments are all included in the scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the scope of the present invention.

With reference to fig. 1-6, the present invention provides a folding chair 100, which comprises a supporting frame 1, a seat plate 2 and a backrest 3 fixed on the supporting frame 1, and a fixing member 4 disposed on the back of the seat plate 2, wherein the supporting frame 1 comprises a front bracket 11 and a rear bracket 12 pivotally connected to each other; a sliding groove 110 is formed between the fixing member 4 and the seat plate 2, the front bracket 11 includes a supporting rod 111 that passes through the sliding groove 110 and can move back and forth in the sliding groove 110, a limiting mechanism disposed adjacent to a front end of the sliding groove 110 is formed on a back surface of the seat plate 2, the limiting mechanism is configured to limit the supporting rod 111 to move forward, and when the folding chair 100 is completely unfolded, the supporting rod 111 abuts against the limiting mechanism. At the moment, the acting force between the supporting rod 111 and the seat plate 2 is mainly concentrated at the abutting part of the supporting rod 111 and the limiting mechanism, so that the problems of falling off, forced deformation and white ejection of the seat plate 2 caused by concentrated stress at the front end of the fixing part 4 in the prior art are solved; compared with the prior art, the limiting mechanism changes the stress mode, and increases the stress area of the supporting rod 111 and the seat plate 2 to the maximum extent, thereby avoiding the problems of mutual abutting deformation, abrasion and the like of the supporting rod 111 and the seat plate 2 to the maximum extent, improving the service performance of the product, and prolonging the service life of the folding chair 100.

In this embodiment, when the folding chair 100 is fully unfolded, that is, the seat board 2 is in the horizontal position, the end of the seat board 2 close to the user is defined as the first side and the end of the seat board 2 far from the user is defined as the second side with reference to the user. In this embodiment, the front and rear movement of the supporting rod 111 is performed by using the seat plate 2 as a reference, and the movement toward the "front" is the movement from the second side to the first side, and the movement toward the "rear" is the movement from the first side to the second side.

The spacing mechanism comprises a transversely extending baffle 21. When the folding chair 100 is completely unfolded, the supporting rod 111 abuts against the baffle 21 so that the baffle 21 limits the supporting rod 111 to move forward. In addition, when the support rod 111 is pressed downwards by the seat plate 2, the baffle plate 21 mainly bears the forward pressure of the support rod 111, and compared with the prior art, the arrangement of the baffle plate 21 avoids the problem that the fixing member 4 is loosened and falls off due to the fact that the fixing member 4 is directly stressed and pressed.

As shown in fig. 4, a plurality of first profiling glue sites 22 are formed on the rear side of the baffle 21 and are arranged at intervals in the transverse direction; when the folding chair 100 is completely unfolded, the supporting rod 111 is supported on the first profiling glue position 22; and the front edge of the seat plate 2 is bent downwards to form a flange 23, and a second profiling glue position 24 is formed between the flange 23 and the baffle 21 to assist in stress. Similarly, the second profiling glue sites 24 are also arranged at intervals in the transverse direction. On one hand, the first profiling glue position 22 prevents the support rod 111 from directly contacting the baffle plate 21, and reduces the abrasion of the baffle plate 21 caused by the support rod 111; on the other hand, the first profiling glue position 22 and the second profiling glue position 24 work together to enhance the bearing strength of the baffle plate 21, so as to prevent the baffle plate 21 from deforming due to stress, thereby enhancing the bearing capacity of the whole folding chair 100 and ensuring the service life of the folding chair 100. Specifically, the first profiling glue position 22 and the second profiling glue position 24 can be a plurality of reinforcing ribs, or other profiling structures such as profiling bosses.

In addition, in this embodiment, the limiting mechanism further includes a groove 25 formed on the back surface of the seat plate 2, the groove 25 is located at the rear side of the baffle plate 21 and is disposed adjacent to the baffle plate 21, and when the folding chair 100 is completely unfolded, the supporting rod 111 abuts against both the groove 25 and the first baffle plate 21. Compared with the prior art, the grooves 25 and the first baffle 21 are arranged to increase the stress area of the support rod 111 and the seat plate 2, so that the problem that the support rod 111 and the seat plate 2 are stressed and deformed due to overlarge local pressure of the support rod 111 and the seat plate 2 is solved. Of course, in order to avoid the problem of excessive local pressure of the support rod 111 and the seat plate 2, in other embodiments of the present invention, a buffer member (not shown) may be disposed on the seat plate 2 and/or the support rod 111, for example, the buffer member may be an elastic plastic member or a foam member or other auxiliary member fully or semi-coated on the support rod 111.

Of course, in other embodiments of the present invention, the limiting mechanism can also be formed only in the groove 25 at the back of the seat plate 2 or only in the baffle 21 set for horizontal extension, as long as avoiding the phenomenon that the front end of the fixing member 4 leads to the concentrated stress of the fixing member 4 to drop, and simultaneously achieving the increase the effect of the stress area of the seat plate 2 and the supporting rod 111 can achieve the purpose of the present invention.

In addition, a rib 26 extending forward and backward is formed on the back surface of the seat plate 2 protruding toward the slide groove 110. The supporting rod 111 can slide back and forth on the convex rib 26, so that the frictional resistance is reduced, the abrasion between the supporting rod 111 and the back of the seat plate 2 is reduced to the greatest extent, and the noise caused by friction is reduced. And, the protruding muscle 26 transversely is provided with the interval and is equipped with 2 at least. Specifically, in the present embodiment, there are 3 ribs 26.

As shown in fig. 5 and 6, a stopping portion 41 is formed at the rear end of the fixing member 4, and a limiting protrusion 42 is further formed at a position of the fixing member 4 adjacent to the rear end of the sliding groove 110 and protrudes toward the seat plate 2; the limiting protrusion 42 and the stopping portion 41 are spaced from each other so that the supporting rod 111 is held between the limiting protrusion 42 and the stopping portion 41 when the folding chair 100 is completely folded. Of course, in order to prevent the displacement of the supporting bar 111 when the folding chair 100 is fully folded or fully unfolded, other structures for limiting the displacement of the supporting bar 111 may be added to the fixing member 4.

At least two positioning holes 43 are formed in the fixing piece 4, and the seat plate 2 is provided with mounting holes 27 corresponding to the positioning holes 43; the folding chair 100 further comprises a positioning member (not numbered) passing through the positioning hole 43 and matching with the mounting hole 27. Specifically, in this embodiment, the positioning element is a cross-shaped recessed pan head screw, and a screw thread adapted to the positioning element is disposed in the mounting hole 27. Of course, other fixing structures can be applied to the present invention and are within the protection scope of the present invention, for example, the fixing member 4 is fixed on the seat plate 2 through a snap structure or through a fixing manner of a pin. The utility model discloses install during mounting 4, convenient laborsaving has avoided having improved whole packaging efficiency because of the condemned problem of powerful equipment.

Preferably, in this embodiment, the fixing member 4 is a plate-shaped body and is provided with 1, and the positioning hole 43 is provided with 4. In other embodiments, the fixing member 4 may be a single or multiple tubular bodies fixed on the back of the seat plate 2, or multiple plate-like bodies, and the positioning hole 43 may be any number greater than or equal to 2, which also achieves the purpose of the present invention.

As shown in fig. 1 and 2, when the folding chair 100 is completely folded and needs to be unfolded, the supporting rod 111 is located between the stopping portion 41 and the limiting protrusion 42, and a user only needs to press the front side of the seat plate 2 to rotate the seat plate 2 clockwise to a horizontal position, and at the same time, the supporting rod 111 slides to the front side of the seat plate 2 to abut against the limiting mechanism; on the contrary, when folding chair 100 expandes completely and need fold, the user only need lift up seat board 2 so that seat board 2 anticlockwise rotation, simultaneously the bracing piece 111 to seat board 2's rear side slip to block in backstop portion 41 with can accomplish between the spacing arch 42 folding of seat. The utility model is not only simple in structure, convenient operation moreover.

To sum up, the utility model is provided with the limiting mechanism, so that when the folding chair 100 is completely unfolded, the supporting rod 111 is abutted against the limiting mechanism, so that the acting force between the supporting rod 111 and the seat plate 2 is mainly concentrated at the abutting part of the supporting rod 111 and the limiting mechanism, and the problem that the front end of the fixing part 4 is intensively stressed to cause the falling off in the prior art is avoided; compared with the prior art, the utility model increases the stress area of the support rod 111 and the seat board 2, thereby avoiding the problems of mutual pressing deformation and abrasion of the support rod 111 and the seat board 2 to the maximum extent and prolonging the service life of the folding chair 100; furthermore, the utility model discloses simple structure and convenient operation.

It should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The above detailed description of a series of embodiments is only for the purpose of illustration, and is not intended to limit the scope of the invention, which is intended to include all equivalent embodiments or modifications that do not depart from the spirit of the invention.

Claims

1. A folding chair comprises a supporting frame, a seat board and a backrest which are fixed on the supporting frame, and a fixing piece arranged on the back of the seat board, wherein the supporting frame comprises a front bracket and a rear bracket which are in pivot connection; a sliding groove is formed between the fixing piece and the seat plate, the front support comprises a supporting rod which penetrates through the sliding groove and can move back and forth in the sliding groove, and the front support is characterized in that: the back of the seat board is provided with a limiting mechanism which is arranged near the front end of the sliding groove, when the folding chair is completely unfolded, the supporting rod is abutted against the limiting mechanism, and the limiting mechanism is used for limiting the forward movement of the supporting rod.

2. The folding chair of claim 1, wherein: the limiting mechanism comprises a baffle plate extending transversely.

3. The folding chair of claim 2, wherein: a plurality of first profiling glue positions which are sequentially arranged at intervals along the transverse direction are formed on the rear side of the baffle; when the folding chair is completely unfolded, the support rod is propped against the first profiling glue position.

4. The folding chair of claim 3, wherein: the front edge of the seat board is bent downwards to form a flange, and a second profiling glue position is formed between the flange and the baffle to assist in stress.

5. The folding chair of claim 2, wherein: the limiting mechanism further comprises a groove formed in the back face of the seat plate, the groove is located on the rear side of the baffle and is adjacent to the baffle, and when the folding chair is completely unfolded, the supporting rod is mutually abutted to the groove and the first baffle.

6. The folding chair of claim 1, wherein: the back of the seat board protrudes towards the sliding groove to form a convex rib extending forwards and backwards.

7. The folding chair of claim 6, wherein: at least 2 convex ribs are arranged at intervals in the transverse direction.

8. The folding chair of claim 1, wherein: the limiting mechanism comprises a groove formed in the back face of the seat plate.

9. The folding chair of claim 1, wherein: a stopping part is formed at the rear end of the fixing part, and the position of the fixing part, which is close to the rear end of the sliding groove, protrudes towards the seat plate to form a limiting bulge; the limiting protrusions and the stopping parts are mutually spaced, so that the supporting rod is clamped between the limiting protrusions and the stopping parts when the folding chair is completely folded.

10. The folding chair of claim 1, wherein: the fixing piece is provided with at least two positioning holes, and the seat plate is provided with mounting holes corresponding to the positioning holes; the folding chair also comprises a positioning piece which passes through the positioning hole and is matched with the mounting hole.