Rotary backrest linkage multi-purpose stacked chair

Abstract

The utility model provides a rotary backrest linkage multi-purpose stacked chair, which comprises a backrest assembly, a seat plate and two armrest assemblies, the armrest assemblies are arranged at two ends of the seat plate, two end faces of the seat plate are both provided with sliding grooves which are vertical to the end faces and are recessed inwards and clamping grooves which are inclined relative to the sliding grooves, the sliding grooves are communicated with the clamping grooves, and the clamping grooves are communicated with the backrest assembly. The backrest assembly comprises a backrest sleeve piece and two supporting rods, the two ends of the backrest sleeve piece are connected with one ends of the supporting rods respectively, and the other ends of the supporting rods penetrate through gaps between the armrest assemblies and the seat plate to be hinged to the armrest assemblies and drive protruding shafts arranged on the supporting rods to be embedded into the sliding grooves to slide; the chair can meet the requirements of users for actual sitting postures with different heights, and is simple, convenient and efficient to operate, high in safety and good in durability in the process of switching between different sitting posture states.

Description

TECHNICAL FIELD

[0001] The utility model relates to furniture technical field, concretely relates to a rotary backrest linkage multipurpose bench chair. BACKGROUND

[0002] In the daily application furniture, there are various different types of seats, and the bench chair is widely used in different places such as cinema, theatre, conference room, gymnasium, airport, station, hospital, classroom, indoor bar counter and the like as the infrastructure of public places such as cinema, theatre, conference room, gymnasium to meet the comfort, safety and functional requirements.

[0003] Such as Chinese patent no. 201520516070.2, the patent document of the announcement date of 2016.01.13, it discloses a multifunctional bench chair, including chair frame, seat plate, backboard and handrail, the seat plate is installed on the chair frame through the pivot, the backboard is fixedly installed on the chair frame, the handrail is installed on the chair frame through the pivot, the handrail includes left handrail and right handrail, the upper end surface of the left handrail is provided with cup seat groove, the left handrail is equipped with winding drum, the winding drum is equipped with winding shaft with automatic rebound winding, the winding shaft outer arm is wound with canvas, the other end of the canvas is equipped with clamping strip, the winding drum and the right side surface of the left handrail are equipped with slot for the in and out of the canvas;The left side surface of the right handrail is equipped with the clamping groove matched with the clamping strip.

[0004] The seat plate and handrail in the above-mentioned document are all installed through the pivot, when not in use, rotate upwards to store, do not occupy space, facilitate the pedestrian to pass through, but the backrest is fixedly arranged, so that the backrest cannot be adjusted in height and angle, and for the bench chair with relatively heavy weight, the direction of the backrest is determined after being placed, when the user needs to change the sitting posture direction, the bench chair needs to be moved and adjusted, and if the user of different height wants to lean back on the backrest, since the backrest is fixed, the needs of different users cannot be met, so that the needs of the user in different postures in different places cannot be met. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a rotary backrest linkage multipurpose bench chair, which can meet the actual needs of different heights and different postures of users, and is simple and convenient to operate, safe, durable and efficient in the conversion process between different postures.

[0006] The utility model provides following technical scheme: a kind of rotary backrest linkage multipurpose bench chair, including backrest assembly, seat plate and two armrest assemblies, the armrest assembly is arranged at the both ends of seat plate, the both end faces of seat plate are all equipped with the vertical end face recess inwardly arranged sliding slot and limiting portion, backrest assembly includes backrest suite and two support rods, the both ends of backrest suite are connected with the one end of support rod respectively, the other end of support rod is inserted into sliding slot and is limited by limiting portion by the clearance between armrest assembly and seat plate and being hinged with armrest assembly and driving the convex shaft being arranged on support rod to slide.

[0007] The above arrangement, when different places such as office table, bar and the like are converted, the convex shaft of the support rod is driven to slide in the sliding slot by rotating the armrest assembly, and when it slides to the side away from the slot, the backrest suite functions as a backrest, so that the user can sit on the seat plate. When it slides into the slot, the support rod is fixed by the limiting portion after adjusting the angle, so that the distance between the top of the backrest suite and the ground changes, and the user can sit on the backrest suite after adjusting the angle. This way, users of different heights can sit on the seat plate and reliably lean on the backrest suite, thus meeting the actual needs of different height postures of users. At the same time, the backrest assembly can be moved from one direction to another direction by moving along the gap between the bottom plate and the backrest assembly, so that different postures can be achieved without moving the bench chair. Moreover, the overall structure is simple by arranging the backrest assembly across the armrest assembly, and the limiting portion ensures the reliability of the structure after rotation.

[0008] Further, the backrest suite includes a fixed shaft and a drum, and the drum is sleeved on the fixed shaft, and the two ends of the fixed shaft are respectively connected with one end of the support rod.

[0009] The above arrangement allows the user to lean on the drum when sitting on the seat plate, which functions as a backrest.

[0010] Further, the limiting portion is a slot that is downwardly and inwardly inclined relative to the sliding slot, and the sliding slot and the slot are in communication.

[0011] The above arrangement uses the inclined slot, and the downwardly inclined slot can limit the support rod in the horizontal direction. When the convex shaft of the support rod slides into the slot, it can be limited in the horizontal direction to prevent the backrest assembly from moving forward and backward when it is subjected to a force in the horizontal direction.

[0012] Further, the sliding slot is horizontally arranged along the width direction of the seat plate, one end of the slot is in communication with the sliding slot, the other end of the slot is downwardly inclined relative to the sliding slot, and an included angle is formed between the sliding slot and the slot, and the range of the included angle is 55°-75°.

[0013] The above arrangement facilitates the convex shaft of the support rod to slide into the clamping groove along the sliding groove, and the clamping groove limits the support rod in the horizontal direction, so that the support rod is stably clamped in the clamping groove and supports the user sitting on the backrest assembly.

[0014] Further, the armrest assembly comprises an armrest rod, a support column one, a support column two and a connecting rod, one end of the support column one and the support column two is connected with the armrest rod, the connecting rod between the support column one and the support column two is connected with the other end of the support column one and the support column two respectively, and the connecting rod is provided with a connecting shaft arranged perpendicularly to the connecting rod.

[0015] The above arrangement can support the seat plate through the support column one and the support column two in the armrest assembly arranged at both ends of the seat plate.

[0016] Further, the other end of the support rod is provided with a limiting groove arranged along the length direction of the support rod, and the connecting assembly is connected with the connecting shaft arranged on the connecting rod after passing through the limiting groove.

[0017] The above arrangement can make the support rod rotate around the connecting rod in the limiting groove through the connecting assembly, so as to adjust the position of the backrest assembly.

[0018] Further, the connecting assembly comprises a connecting piece one and two connecting pieces two, the connecting piece two is sleeved on the connecting shaft, and the connecting piece one is connected with the connecting shaft.

[0019] The above arrangement can limit the movement of the support rod in the direction perpendicular to the connecting rod through the connecting assembly, while not affecting the rotation of the support rod around the connecting rod.

[0020] Further, the other end of the connecting shaft away from the connecting rod is recessed inward along the axis direction of the connecting shaft to form a containing cavity matched with the connecting piece one, and the connecting piece one is screw-connected with the inner side of the containing cavity.

[0021] The above arrangement makes the connecting piece one limit the support rod in the direction perpendicular to the connecting rod.

[0022] Further, the end faces of the seat plate are connected with the support column one and the support column two, and the connecting positions are located between the armrest rod and the connecting rod.

[0023] The above arrangement makes the support column one and the support column two support the seat plate.

[0024] Further, the edge of the seat plate is provided with a connecting frame fixedly connected with the seat plate, the armrest assembly is connected with the connecting frame, and the side close to the armrest assembly of the connecting frame is provided with a gap for the other end of the support rod to pass through and horizontally move.

[0025] The above setting, through connecting frame on setting gap, on one hand, facilitates the connection of the handrail assembly and the connecting frame, and meanwhile, does not increase the complexity of the overall structure. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a whole structure schematic view of the utility model.

[0027] Figure 2 It is a side schematic view of the backrest assembly before rotation in the utility model.

[0028] Figure 3 It is a side schematic view of the backrest assembly after rotation in the utility model.

[0029] Figure 4 It is a structure schematic view of the backrest assembly before and after rotation in the utility model.

[0030] Figure 5 It is Figure 1 An enlarged view of A in the middle. DETAILED DESCRIPTION

[0031] The utility model will be explained in detail below in combination with the drawings and specific embodiments.

[0032] As Figures 1-5 shown, the utility model provides a kind of rotary backrest linkage multipurpose bench chair, including backrest assembly, seat plate 1 and two handrail assemblies 2, two handrail assemblies 2 are arranged at the both ends of seat plate 1, and the both end faces 11 of seat plate 1 are equipped with the sliding groove 12 and the limiting portion that are vertically recessed to the end face 11, and the limiting portion is the clamping groove 13 that is inclinedly arranged with sliding groove in the embodiment, sliding groove 12 is communicated with clamping groove 13, and backrest assembly includes backrest kit and two support rods 3, and the both ends of backrest kit are connected with the one end of support rod 3 respectively, and backrest kit includes fixed shaft (not marked in drawing) and reel 4, reel 4 is sleeved on fixed shaft, and the both ends of fixed shaft are connected with the one end of support rod 3 respectively, so that when user sits on seat plate 1, can lean on reel 4, and play the role of backrest;The other end of support rod 3 is hinged with handrail assembly 2 and drives the convex shaft 31 embedded in sliding groove 12 and sliding by passing the gap between handrail assembly 2 and seat plate 1, and the other end of support rod 3 is equipped with the limiting slot 32 that is arranged along the length direction of support rod 3, and connecting assembly is connected with handrail assembly 2 after passing limiting slot 32, so that support rod 3 can be rotated around handrail assembly 2 in limiting slot 32 by connecting assembly, to adjust the position of backrest assembly, and in the embodiment, reel 4 is made of soft material, so that no matter user leans on reel 4 or changes sitting posture and sits on reel 4, can provide excellent comfort for user.

[0033] As Figure 1As shown, the edge of the seat plate 1 is provided with a connecting frame 10, the connecting frame 10 is fixedly connected with the seat plate 1, the handrail assembly 2 is detachably connected with the connecting frame 10, the side of the connecting frame 10 close to the handrail assembly 2 is provided with a gap 101 for the other end of the supporting rod to pass through and horizontally move, in the embodiment, the bottom plate 1 is made of wood material.

[0034] As shown in the drawings, Figure 2 and 3 The handrail assembly 2 includes a handrail rod 21, a supporting column one 22, a supporting column two 23 and a connecting rod 24, one end of the supporting column one 22 and the supporting column two 23 is connected with the handrail rod 21, the connecting rod 24 between the supporting column one 22 and the supporting column two 23 is fixedly connected with the other end of the supporting column one 22 and the supporting column two 23 respectively, the seat plate end surface 11 is detachably connected with the supporting column one 22 and the supporting column two 23 and the connecting place is between the handrail rod 21 and the connecting rod 24, in the embodiment, the seat plate end surface 11 is detachably connected with the supporting column one 22 and the supporting column two 23 through threaded connection or other connection; the connecting rod 24 is provided with a connecting shaft 241 which is vertically arranged on the connecting rod 24, the connecting assembly is connected with the connecting shaft 241 arranged on the connecting rod 24 after passing through the limiting slot 32; as shown in the drawings, Figure 5 The connecting assembly includes a connecting piece one 41 and two connecting piece twos 42, the connecting piece two 42 is sleeved on the connecting shaft 241, the connecting piece one 41 is connected with the connecting shaft 241, the end of the connecting shaft 241 away from the connecting rod 24 is recessed inward along the axis direction of the connecting shaft 241 to form a containing cavity matched with the connecting piece one 41, the connecting piece one 41 is screw connected with the inside of the containing cavity, so that the connecting piece one 41 plays a limiting role on the supporting rod 3 in the direction perpendicular to the connecting rod 24, while not affecting the rotation of the supporting rod 3 around the connecting rod 24.

[0035] As shown in the drawings, Figure 2 The sliding groove 12 is horizontally arranged along the width direction of the seat plate 1, one end of the clamping groove 13 is communicated with the sliding groove 12, the other end of the clamping groove 13 is arranged downward and inward relative to the sliding groove 12, the included angle a is formed between the sliding groove 12 and the clamping groove 13, the range of the included angle a is 55°~75°, in the embodiment, the included angle a is 65°, so that the convex shaft 31 of the supporting rod 3 slides along the sliding groove 12 during the rotation of the supporting rod 3 in the limiting slot 32 around the connecting rod 24, after sliding into the clamping groove 13, the clamping groove 13 plays a limiting role on the supporting rod 3 in the horizontal direction, that is, the clamping groove 13 realizes automatic locking on the supporting rod 3, so that the supporting rod 3 is stably clamped in the clamping groove 13 and supports the user sitting on the backrest assembly, while when the unlocking of the supporting rod 3 is needed, the supporting rod 3 can be lifted upward along the length direction of the clamping groove 13 and then enters the sliding groove 12.

[0036] In the embodiment, the length of the support rod 3 is greater than the distance between the armrest rod 21 and the connecting rod 24, so that the support rod 3 can ensure that the backrest assembly can pass around the armrest rod 21 to achieve position adjustment during rotation.

[0037] The working principle of the utility model is as follows: when the sitting posture is converted in different places such as office tables, bars and the like, the support rod 3 is rotated around the connecting rod 24, thereby driving the support rod 3 to slide in the sliding groove 12, when sliding to one side away from the clamping groove 13, the backrest assembly plays a backrest role, so that the user sits on the seat plate 1; after sliding into the clamping groove 13, the support rod 3 after the angle adjustment is clamped in the clamping groove 13 for fixation, at this time, the position of the backrest assembly has changed, thereby changing the distance from the backrest assembly to the ground, so that the user can sit on the backrest assembly after the angle adjustment, so that the user can sit on the seat plate 1 and can sit on the backrest assembly after the sitting posture is converted, thereby meeting the actual different height sitting posture needs of the user, the conversion between different sitting postures is simple and efficient, safe, durable and the like.

Claims

1. A rotary backrest-linked multi-purpose bench chair, characterized by: The backrest assembly, the seat plate and two armrest assemblies are provided, the armrest assemblies are arranged at two ends of the seat plate, the end faces of the seat plate are each provided with a sliding groove and a limiting part which are arranged vertically and inwardly recessed, the backrest assembly comprises a backrest sleeve and two support rods, the two ends of the backrest sleeve are connected with one end of the support rods respectively, the other end of the support rods is hinged with the armrest assemblies through the gap between the armrest assemblies and the seat plate and drives the convex shaft arranged on the support rods to slide into the sliding groove and be limited by the limiting part.

2. A rotary backrest-linked multi-purpose bench chair according to claim 1, characterized in that: The backrest sleeve comprises a fixed shaft and a winding drum, the winding drum is sleeved on the fixed shaft, and the two ends of the fixed shaft are connected with one end of the support rods respectively.

3. The rotary backrest-linked multi-purpose bench chair according to claim 1, characterized in that: The limiting part is a clamping groove which is arranged downwardly and inwardly inclined to the sliding groove, and the sliding groove is communicated with the clamping groove.

4. The rotary backrest-linked multi-purpose bench chair according to claim 3, characterized in that: The sliding groove is arranged horizontally along the width direction of the seat plate, one end of the clamping groove is communicated with the sliding groove, the other end of the clamping groove is arranged downwardly inclined to the sliding groove, an included angle is formed between the sliding groove and the clamping groove, and the range of the included angle is 55°-75°.

5. The rotary backrest-linked multi-purpose bench chair according to claim 1, characterized in that: The armrest assembly comprises an armrest rod, a support column one, a support column two and a connecting rod, one end of the support column one and the support column two is connected with the armrest rod, the connecting rod between the support column one and the support column two is connected with the other end of the support column one and the support column two respectively, and the connecting rod is provided with a connecting shaft which is arranged vertically to the connecting rod.

6. The rotary backrest-linked multi-purpose bench chair according to claim 1, characterized in that: The other end of the support rod is provided with a limiting groove which is arranged along the length direction of the support rod, and the connecting assembly is connected with the connecting shaft arranged on the connecting rod after passing through the limiting groove.

7. A rotary backrest-linked multi-purpose bench chair according to claim 6, characterized in that: The connecting assembly comprises a connecting piece one and two connecting piece twos, the connecting piece two is sleeved on the connecting shaft, and the connecting piece one is connected with the connecting shaft.

8. A rotary backrest-linked multi-purpose bench chair according to claim 7, characterized in that: The other end of the connecting shaft away from the connecting rod is recessed inwardly along the axis direction of the connecting shaft to form an accommodating cavity which is matched with the connecting piece one, and the connecting piece one is screw-connected with the inside of the accommodating cavity in a threaded manner.

9. The rotary backrest-linked multi-purpose bench chair according to claim 1, characterized in that: The end faces of the seat plate are connected with the support column one and the support column two, and the connecting positions are located between the armrest rod and the connecting rod.

10. The rotary backrest-linked multi-purpose bench chair according to claim 1, characterized in that: The edge of the seat plate is provided with a connecting frame, the connecting frame is fixedly connected with the seat plate, the armrest assembly is connected with the connecting frame, and the side of the connecting frame close to the armrest assembly is provided with a gap for the other end of the support rod to pass through and horizontally move.

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