Leisure chair with mortise and tenon joint structure

Abstract

The leisure chair comprises a front leg assembly, a rear leg assembly, a backrest pipe, a seat pipe and two armrests, the front leg assembly and the rear leg assembly respectively comprise a left leg pipe, a right leg pipe and a plurality of transverse pipes, and inserting grooves for containing the transverse pipes are formed in the side, close to the right leg pipe, of the left leg pipe and the side, close to the left leg pipe, of the right leg pipe. The shape of the slot is matched with that of the transverse pipe; and the two ends of the transverse pipe are respectively inserted into the slot on the left leg pipe and the slot on the right leg pipe through mortise and tenon joint. The horizontal pipes of the front leg assembly and the rear leg assembly of the leisure chair are in interference fit with the left leg pipe and the right leg pipe through the mortise and tenon joint structures, so that the structure is stable and not easy to loosen.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of folding chair, concretely relates to a leisure chair with mortise and tenon structure. BACKGROUND

[0002] The folding chair is a kind of portable seat with stacking function, which can be conveniently transported and space-saving, and can be used in public places or at home. Some folding chairs are provided with a cross tube in the chair leg part, which can make the chair frame more firm and can be used for footrest. The existing cross tube is usually fixed on the leg tube by screws, and there is a problem of screw loosening after long-term use. In addition, the existing folding chair often has a large folding thickness, and relies on screw fastening, which is easy to loosen, complex to assemble, affects the appearance, and cannot meet the use requirements of users. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides a leisure chair with mortise and tenon structure, which mainly solves the problem of easy loosening of the cross tube.

[0004] To achieve the above purpose, the utility model is realized by the following technical scheme:

[0005] A leisure chair with mortise and tenon structure, comprising a front leg assembly, a rear leg assembly, a backrest tube, a seat tube and two armrests, the two armrests are respectively hinged on both sides of the backrest tube and are respectively connected with the front leg assembly or the rear leg assembly on the same side, the seat tube is hinged with the front leg assembly and the backrest tube, and the rear leg assembly is connected with the seat tube.

[0006] The front leg assembly and the rear leg assembly each comprise a left leg tube, a right leg tube and a plurality of cross tubes, the left leg tube is provided with a slot for accommodating the cross tube on the side close to the right leg tube, and the right leg tube is provided with a slot for accommodating the cross tube on the side close to the left leg tube, the shape of the slot is matched with the shape of the cross tube, and the cross tube is inserted into the slot on the left leg tube and the slot on the right leg tube through mortise and tenon cooperation at both ends.

[0007] Preferably, the front leg assembly and the rear leg assembly each comprise a plurality of pins, the front slot wall or the rear slot wall of each slot is provided with a pin mounting hole, the cross tube is provided with a through hole penetrating the front and rear surfaces of the cross tube at both ends, the cross tube is fixed with the left leg tube and the right leg tube by pins at both ends, and the pin is in interference fit with the pin mounting hole on the slot wall and the through hole on the cross tube.

[0008] Preferably, the left leg tube and the right leg tube are each cut from a pipe material with L-shaped cross section, when the leisure chair is in the folded state, the left leg tube of the front leg assembly is in central symmetry with the left leg tube of the rear leg assembly, and the right leg tube of the front leg assembly is in central symmetry with the right leg tube of the rear leg assembly.

[0009] Preferably, the upper end of the left leg pipe and the upper end of the right leg pipe of the front leg assembly are provided with first connecting members, the upper end of the left leg pipe and the upper end of the right leg pipe of the rear leg assembly are provided with second connecting members, the first connecting members and the second connecting members on the same side are hinged, the first connecting member or the second connecting member is provided with an armrest connecting member, and the armrest connecting member is fixed with a gear pin.

[0010] Each armrest bottom surface is provided with a containing groove extending in the front-rear direction, the left and right groove walls of the containing groove are provided with opposite sliding grooves, the two ends of the gear pin are arranged in the sliding grooves on the two sides of the containing groove, and the top surface of the sliding groove is provided with a row of interval distributed gear grooves from front to back.

[0011] Preferably, the left leg pipe and the right leg pipe of the rear leg assembly are hinged to the lower end of a rear foot turnover piece on the rear side, and the upper end of the rear foot turnover piece is hinged to one side of the U-shaped connecting piece.

[0012] Preferably, the left side of the left leg pipe and the right side of the right leg pipe of the front leg assembly are provided with a cup holder connecting member, one of the cup holder connecting members is provided with a cup holder assembly, the cup holder connecting member is detachably connected with a cup holder rotating piece, and the cup holder is rotatable relative to the cup holder rotating piece.

[0013] Preferably, the cup holder connecting member is provided with hanging grooves penetrating through the top surface of the cup holder connecting member on the front and rear sides, one side of the cup holder rotating piece is provided with a recess, the front and rear side walls of the recess are protruded to form two hanging strips, the cup holder rotating piece is hung on the cup holder connecting member by inserting the two hanging strips into the two hanging grooves from top to bottom, and the cup holder rotating piece can be separated from the cup holder connecting member by pulling the cup holder rotating piece upward.

[0014] Preferably, the cup holder assembly further comprises a spring, the cup holder rotating piece is provided with a transverse hole communicating with the recess, the spring is located in the transverse hole and pushes the cup holder connecting member and the cup holder rotating piece, the cup holder is provided with a transverse positioning column, the transverse positioning column is inserted into the transverse hole of the cup holder rotating piece, and the spring is sleeved on the transverse positioning column.

[0015] Preferably, one side of the cup holder rotating piece is protruded to form a boss, the circumferential surface of the boss is protruded to form a plurality of limiting convex parts, the side close to the cup holder rotating piece of the cup holder is provided with a containing cavity for containing the boss, the side wall of the containing cavity is provided with a plurality of limiting concave parts, the boss and the containing cavity are inserted and matched, and the limiting concave parts and the limiting convex parts are inserted and matched.

[0016] The utility model has the following beneficial effects:

[0017] 1. The transverse pipes of the front leg assembly and the rear leg assembly of the leisure chair are all connected with the left leg pipe and the right leg pipe through the mortise and tenon structure and are in interference fit, so that the structure is stable and not easy to loosen.

[0018] 2、The leg pipe of the leisure chair is L-shaped pipe, in the folded state, the left leg pipe of the front leg assembly and the left leg pipe of the rear leg assembly are in central symmetry, the right leg pipe of the front leg assembly and the right leg pipe of the rear leg assembly are in central symmetry, the total thickness of the two L-shaped pipes is small when being closed, which is beneficial to reduce the thickness of the folded leisure chair.

[0019] 3、The utility model discloses a leisure chair, which adjusts the positions of the front and rear armrests, adjusts the angle between the backrest pipe and the seat pipe, and is suitable for users with different body shapes, and has high comfort.

[0020] 4、The cup holder can rotate, so as to match the leisure chair after adjusting the angle of the backrest pipe, and make the cup holder convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the structure schematic diagram of the unfolded state of the leisure chair of the utility model embodiment;

[0022] Figure 2 is the schematic diagram of the half-folded state of the leisure chair of the embodiment;

[0023] Figure 3 is the schematic diagram of the folded state of the leisure chair of the embodiment;

[0024] Figure 4 is Figure 1 the exploded view of the leisure chair;

[0025] Figure 5 is the exploded view of the front leg assembly of the embodiment;

[0026] Figure 6 is the first split view of the cup holder, the cup holder connecting piece and the cup holder rotating piece;

[0027] Figure 7 is the second split view of the cup holder, the cup holder connecting piece and the cup holder rotating piece;

[0028] Figure 8 is the schematic diagram of the armrest. DETAILED DESCRIPTION

[0029] The utility model will be further described in combination with the drawings and embodiments.

[0030] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0031] As Figures 1 to 8 shown in the drawings, the present embodiment discloses a leisure chair with mortise and tenon structure, which comprises a front leg assembly 1, a rear leg assembly 2, a backrest tube 3, a seat tube 4 and two armrests 5, the two armrests 5 are respectively hinged to the two sides of the backrest tube 3 and are respectively movably connected with the front leg assembly 1 or the rear leg assembly 2 on the same side, the seat tube 4 is hinged with the front leg assembly 1 and the backrest tube 3, and the rear leg assembly 2 is movably connected with the seat tube 4.

[0032] The front leg assembly 1 and the rear leg assembly 2 both comprise a left leg tube 6, a right leg tube 7 and a plurality of cross tubes 8, the left leg tube 6 and the right leg tube 7 are provided with insertion slots 9 on the side close to the right leg tube 7 and the side close to the left leg tube 6 respectively for accommodating the cross tubes 8, the shape of the insertion slots 9 matches the shape of the cross tubes 8, and the cross tubes 8 are inserted into the insertion slots 9 on the left leg tube 6 and the right leg tube 7 respectively through mortise and tenon cooperation. The cross tubes 8 are all in interference fit with the left leg tube 6 and the right leg tube 7 through mortise and tenon structure, which is stable and not easy to loosen.

[0033] In order to further fix the cross tubes 8, the front leg assembly 1 and the rear leg assembly 2 both comprise a plurality of pins 10, the front slot wall or the rear slot wall of each insertion slot 9 is provided with a pin mounting hole 11, and the two ends of the cross tube 8 are provided with through holes penetrating the front and rear surfaces of the cross tube 8. The two ends of the cross tube 8 are fixed with the left leg tube 6 and the right leg tube 7 by the pins 10, and the pins 10 are in interference fit with the pin mounting holes 11 on the slot wall of the insertion slot 9 and the through holes on the cross tube 8. In order to be beautiful, the left leg tube 6 and the right leg tube 7 of the front leg assembly 1 are both provided with pin mounting holes 11 on the rear side surface for mounting the pins 10, and the left leg tube 6 and the right leg tube 7 of the rear leg assembly 2 are both provided with pin mounting holes 11 on the front side surface for mounting the pins 10, so that the pins 10 cannot be seen in the front, rear, left and right directions of the leisure chair, which is beneficial to the beauty, and even if the pins 10 protrude due to loosening, they will not be exposed in a position easy to scratch the human body. The pins 10 are in interference fit with the cross tubes 8 and the leg tubes, which are not easy to loosen, and no lock screws are needed for installing the cross tubes 8.

[0034] Preferably, the left leg tube 6 and the right leg tube 7 are both cut from a pipe material with L-shaped cross section, the corner of the left leg tube 6 of the front leg assembly 1 is opposite to the corner of the left leg tube 6 of the rear leg assembly 2, and the corner of the right leg tube 7 of the front leg assembly 1 is opposite to the corner of the right leg tube 7 of the rear leg assembly 2, that is, when the leisure chair is in the folded state, the left leg tube 6 of the front leg assembly 1 is in central symmetry with the left leg tube 6 of the rear leg assembly 2, and the right leg tube 7 of the front leg assembly 1 is in central symmetry with the right leg tube 7 of the rear leg assembly 2. Figure 3Compared with a rectangular tube with the same cross-sectional length and width, the L-shaped tube has higher strength, and in the folded state, the total thickness of the two L-shaped tubes when they are brought together is smaller (the total thickness of two rectangular tubes brought together is twice the width of a single rectangular tube, and the total thickness of two L-shaped tubes brought together in this embodiment is about 1.5 times the width of a single L-shaped tube), which is beneficial to reducing the thickness of the leisure chair when it is folded.

[0035] Each of the lower ends of the left leg tubes 6 and the lower ends of the right leg tubes 7 is provided with a foot cover, which is beneficial to preventing slipping and avoiding damage to the ground and preventing sand from entering the inside of the leg tubes. In this embodiment, the front leg assembly 1 has two cross tubes 8, and the rear leg assembly 2 has one cross tube 8. In other embodiments, the number of cross tubes 8 of the front leg assembly 1 and the number of cross tubes 8 of the rear leg assembly 2 are not limited to this,

[0036] The upper ends of the left leg tubes 6 and the upper ends of the right leg tubes 7 of the front leg assembly 1 are each provided with a first connecting piece 12, and the upper ends of the left leg tubes 6 and the upper ends of the right leg tubes 7 of the rear leg assembly 2 are each provided with a second connecting piece 13. The first connecting pieces 12 and the second connecting pieces 13 on the same side are hinged. Preferably, the upper ends of the left leg tubes 6 and the upper ends of the right leg tubes 7 of the front leg assembly 1 are in interference fit with the first connecting pieces 12 and are fixed by the pins 10, and the upper ends of the left leg tubes 6 and the upper ends of the right leg tubes 7 of the rear leg assembly 2 are in interference fit with the first connecting pieces 12 and are fixed by the pins 10.

[0037] The first connecting piece 12 or the second connecting piece 13 is provided with an armrest connecting piece 14, and the armrest connecting piece 14 is fixed with a detent pin 15. The detent pin 15 is horizontally arranged and passes through the through hole in the armrest connecting piece 14 and is welded and fixed with the armrest connecting piece 14. Each armrest 5 is provided with a receiving groove extending in the front-rear direction, and the left and right groove walls of the receiving groove are provided with opposite sliding grooves 16. The top surface of the sliding groove 16 is provided with a row of spaced detent grooves 17 from front to back. The two ends of the detent pin 15 are arranged in the sliding grooves 16 on both sides of the receiving groove. By matching the detent pin 15 with different detent grooves 17, the angle adjustment between the backrest tube 3 and the seat tube 4 is realized.

[0038] In the unfolded state of the leisure chair, the armrest 5 presses down the detent pin 15, and the detent pin 15 is located in one of the detent grooves 17. At this time, the armrest 5 cannot move forward and backward, and the angle between the backrest tube 3 and the seat tube 4 is fixed. When the angle of the backrest tube 3 needs to be adjusted, the two armrests 5 are simultaneously raised, so that the detent pin 15 is separated from the detent groove 17. At this time, the detent pin 15 can slide forward and backward along the sliding groove 16. By pulling the armrest 5 in the front-rear direction and then pressing down the armrest 5, the detent pin 15 enters another detent groove 17, so as to realize the angle adjustment between the backrest tube 3 and the seat tube 4.

[0039] The backrest tube 3 and the seat tube 4 are both U-shaped tubes, the backrest tube 3 is downwardly open, and the seat tube 4 is rearwardly open. Two U-shaped connecting pieces 18 are arranged at the rear end of the seat tube 4, and the lower end of the backrest tube 3 is hingedly connected to the two U-shaped connecting pieces 18.

[0040] The left leg tube 6 and the right leg tube 7 of the rear leg assembly 2 are both hingedly connected to the lower end of a rear foot turnover piece 19 at the rear side, and the upper end of the rear foot turnover piece 19 is hingedly connected to one side of the U-shaped connecting piece 18. When the leisure chair is in the unfolded state, the upper end of the two rear foot turnover pieces 19 respectively abuts against the two right leg tubes 7.

[0041] A seat tube turnover piece 20 is arranged at the right side of the left leg tube 6 and the left side of the right leg tube 7 of the front leg assembly 1, and the seat tube 4 is hingedly connected to the two seat tube turnover pieces 20.

[0042] The leisure chair of the embodiment further comprises a cup holder 21 assembly, a cup holder connecting piece 23 is arranged at the left side of the left leg tube 6 and the right side of the right leg tube 7 of the front leg assembly 1, the cup holder 21 assembly comprises the cup holder 21 and a cup holder rotating piece 22, the cup holder connecting piece 23 is detachably connected to the cup holder rotating piece 22, and the cup holder rotating piece 22 is detachably connected to the cup holder 21.

[0043] The cup holder connecting piece 23 is provided with a hanging groove 24 penetrating through the top surface of the cup holder connecting piece 23 at the front and rear sides, one side of the cup holder rotating piece 22 is provided with a recess, the front and rear side walls of the recess are protruded to form two hanging strips 25, the cup holder rotating piece 22 is hung on the cup holder connecting piece 23 by inserting the two hanging strips 25 into the two hanging grooves 24 from top to bottom, and the cup holder rotating piece 22 is separated from the cup holder connecting piece 23 by pulling the cup holder rotating piece 22 upward.

[0044] Preferably, the cup holder 21 assembly further comprises a spring (not shown), the cup holder rotating piece 22 is provided with a transverse hole 26 communicating with the recess, the spring is located in the transverse hole 26 and abuts against the cup holder connecting piece 23 and the cup holder rotating piece 22, so that a transverse pulling force exists between the cup holder rotating piece 22 and the cup holder connecting piece 23, and the cup holder rotating piece 22 is prevented from shaking. Preferably, the cup holder 21 is provided with a transverse positioning column 27, the transverse positioning column 27 is inserted into the transverse hole 26 of the cup holder rotating piece 22, and the spring is sleeved on the transverse positioning column 27.

[0045] One side of the cup holder rotating piece 22 is protruded to form a boss 28, the circumferential surface of the boss 28 is protruded to form a plurality of limiting protrusions 29, the side of the cup holder 21 close to the cup holder rotating piece 22 is provided with an accommodating cavity 30 for accommodating the boss 28, the side wall of the accommodating cavity 30 is provided with a plurality of limiting recesses 31, the boss 28 is insertedly connected to the accommodating cavity 30, the limiting recesses 31 are insertedly connected to the limiting protrusions 29, and the angle of the cup holder 21 relative to the cup holder rotating piece 22 is adjusted by rotating the cup holder 21.

[0046] According to the requirement, the cup holder 21 assembly can be installed on the left side of the leisure chair, or installed on the right side of the leisure chair. The cup holder 21 can be rotated to a comfortable angle after the angle between the backrest tube 3 and the seat tube 4 is adjusted.

[0047] The above is only used to illustrate the technical solutions of the present application, and is not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, therefore, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

Claims

1. A lounge chair with a mortise and tenon structure, characterized in that, It includes a front leg assembly, a rear leg assembly, a backrest tube, a seat tube, and two armrests. The two armrests are respectively hinged to both sides of the backrest tube and movably connected to the front leg assembly or the rear leg assembly on the same side. The seat tube is hinged to the front leg assembly and the backrest tube, and the rear leg assembly is movably connected to the seat tube. Both the front leg assembly and the rear leg assembly include a left leg tube, a right leg tube, and several horizontal tubes. The left leg tube near the right leg tube and the right leg tube near the left leg tube are provided with slots for accommodating the horizontal tubes. The shape of the slots matches the shape of the horizontal tubes. The two ends of the horizontal tubes are inserted into the slots on the left leg tube and the slots on the right leg tube respectively by tenon and mortise.

2. The lounge chair with mortise and tenon structure according to claim 1, characterized in that, Both the front leg assembly and the rear leg assembly include several pins. Each slot has a pin mounting hole on its front or rear wall. The horizontal tube has through holes at both ends that penetrate the front and rear surfaces of the horizontal tube. The horizontal tube is fixed to the left and right leg tubes by pins at both ends. The pins are interference-fitted with the pin mounting holes on the slot wall and the through holes on the horizontal tube.

3. The lounge chair with mortise and tenon structure according to claim 1 or 2, characterized in that, Both the left and right leg tubes are cut from L-shaped tubing. When the chair is folded, the left leg tube of the front leg assembly is centrally symmetrical with the left leg tube of the rear leg assembly, and the right leg tube of the front leg assembly is centrally symmetrical with the right leg tube of the rear leg assembly.

4. The lounge chair with mortise and tenon structure according to claim 1, characterized in that, The upper ends of the left and right leg tubes of the front leg assembly are each equipped with a first connector, and the upper ends of the left and right leg tubes of the rear leg assembly are each equipped with a second connector. The first and second connectors on the same side are hinged together. A handrail connector is installed on the first or second connector, and a stop pin is fixed on the handrail connector. Each armrest has a receiving groove extending in the front-to-back direction on its bottom surface. The left and right walls of the receiving groove have opposing sliding grooves. The two ends of the stop pin are placed in the sliding grooves on both sides of the receiving groove. The top surface of the sliding groove has a row of spaced stop grooves from front to back. By engaging the stop pin with different stop grooves, the angle between the backrest tube and the seat tube can be adjusted.

5. The lounge chair with mortise and tenon structure according to claim 1, characterized in that, The left and right leg tubes of the rear leg assembly are both hinged to the lower end of a rear leg flip-up component on the rear side. The upper end of the rear leg flip-up component is hinged to one side of the U-shaped connector. When the lounge chair is in the unfolded state, the upper ends of the two rear leg flip-up components abut against the two right leg tubes respectively.

6. The lounge chair with mortise and tenon structure according to claim 1, characterized in that, A cup holder connector is installed on the left side of the left leg tube and the right side of the right leg tube of the front leg assembly. One of the cup holder connectors is equipped with a cup holder assembly, which includes a cup holder and a cup holder rotator. The cup holder connector and the cup holder rotator are detachably connected, and the cup holder can rotate relative to the cup holder rotator.

7. The lounge chair with mortise and tenon structure according to claim 6, characterized in that, The cup holder connector has hanging grooves on both the front and rear sides that run through the top surface of the cup holder connector. The cup holder rotator has a groove on one side, and the front and rear side walls of the groove protrude to form two hanging strips. By inserting the two hanging strips from top to bottom into the two hanging grooves, the cup holder rotator hangs on the cup holder connector. Pulling the cup holder rotator upwards can separate the cup holder rotator from the cup holder connector.

8. The lounge chair with mortise and tenon structure according to claim 7, characterized in that, The cup holder assembly also includes a spring. The cup holder rotating part has a transverse hole with a connecting groove. The spring is located in the transverse hole and pushes against the cup holder connector and the cup holder rotating part. The cup holder has a transverse positioning post, which is inserted into the transverse hole on the cup holder rotating part. The spring is sleeved on the transverse positioning post.

9. The lounge chair with a mortise and tenon structure according to any one of claims 6 to 8, characterized in that, A boss protrudes from one side of the cup holder rotating part, and multiple limiting protrusions protrude from the circumference of the boss. A receiving cavity for accommodating the boss is provided on the side of the cup holder near the cup holder rotating part. Multiple limiting recesses are provided on the side wall of the receiving cavity. The boss is inserted into the receiving cavity, and the limiting recesses are inserted into the limiting protrusions.

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