Chair

Abstract

The utility model discloses a chair which comprises a chair frame as well as a chair seat and a chair back which are arranged on the chair frame, and is characterized in that the chair frame comprises two symmetrically arranged side rods which are fixedly connected; the chair seat or the chair back is mounted on the side rods through a locking mechanism; a plurality of lock holes which are formed up and down are formed in the side rods; the locking mechanism comprises two lock sleeves, the two lock sleeves are arranged on the two side rods in a sleeving mode respectively, the two lock sleeves are fixedly connected through a connecting part, and the chair seat or the chair back is installed on the connecting part; a button is hinged to the lock sleeve and movably connected with a plug pin, the plug pin is in sliding fit with the lock sleeve, and the plug pin is connected with the lock hole of the side rod in a pluggable mode. An elastic piece used for driving the bolt to be inserted into the lock hole is arranged between the button and the lock sleeve. Through the arrangement, the button is only used for driving the bolt to slide on the lock sleeve, so that the bolt enters and exits from the lock hole of the side rod, and the locking effect can be guaranteed; and the modeling and the structure of the parts are simpler, so that the chair is convenient to manufacture.

Description

Technical Field

[0001] The utility model relates to the field of home furnishings, in particular to a chair. Background Art

[0002] As children's height and weight change, in order to enable children to develop good sitting habits in their home life, it is necessary to adjust the backrest or seat height of the chair, which makes the chair personalized.

[0003] The prior art with publication number CN211354697U discloses a locking control mechanism for a seat, comprising a support tube, a support connector and a cover plate detachably connected thereto, the cover plate having a sleeve, a control arm being arranged in the support connector, the control arm being rotatably connected to the support connector through a rotating shaft, a latch being formed at one end of the control arm, the latch passing through the cover plate and exposed in the sleeve, a first spring being arranged in the support connector for keeping the latch in a state of passing out of the cover plate; a locking hole being arranged on the support tube, the sleeve being arranged outside the support tube, and the latch being inserted into the corresponding locking hole in a locked state; a button being slidingly arranged in the support connector, the tail of the button abutting against the control arm, and when the button is pressed, the control arm is caused to rotate and the latch is retracted to disengage from the locking hole to realize unlocking; in specific applications, the latch is always inserted in the corresponding locking hole to realize position locking; when adjustment is required, the button is pressed to retract the latch, and at the same time, the support connector is adjusted to slide up and down.

[0004] In the prior art, during the process of inserting and removing the latch from the locking hole, the latch rotates around the rotating shaft, and the latch is integrally provided with the control arm, which may cause the control arm to fail to rotate when subjected to a large force, and the structure and component shape in the prior art are also relatively complex, making the assembly and manufacture of the chair relatively difficult. Utility Model Content

[0005] In order to solve the problems of poor locking stability and complex structure in the prior art, the utility model aims to provide a chair with stronger stability and simpler structure.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: comprising a chair frame and a seat and a chair back mounted on the chair frame, characterized in that: the chair frame comprises two symmetrically arranged side rods, the two side rods are fixedly connected; the seat or the chair back is mounted on the side rods through a locking mechanism; the side rods are provided with a plurality of locking holes arranged up and down;

[0007] The locking mechanism includes two lock sleeves, which are respectively mounted on two side rods, and the two lock sleeves are fixedly connected through a connecting part, and the seat or the chair back is installed on the connecting part; a button is hinged on the lock sleeve, and a bolt is movably connected to the button, the bolt and the lock sleeve are slidably matched, and the bolt is plug-in connected to the lock hole of the side rod; an elastic member for driving the bolt to insert into the lock hole is arranged between the button and the lock sleeve.

[0008] Preferably, the button is arranged on the rear side of the lock sleeve.

[0009] Preferably, the button and the lock sleeve are hinged via a first axis, and the elastic member and the latch are disposed on both sides of the first axis.

[0010] Preferably, the lock sleeve is provided with a limiting hole communicated with the interior thereof, and the latch pin is provided with a locking portion protruding therefrom; the locking portion of the latch pin extends out from the limiting hole and is pluggably connected to the locking hole of the side rod.

[0011] Preferably, a movable hole is provided on the latch, the second shaft passes through the movable hole of the latch and is connected to the button, and the inner diameter of the movable hole is larger than the outer diameter of the second shaft.

[0012] Preferably, two sets of locking mechanisms are arranged up and down, the seat is installed on the locking mechanism located on the lower side, and the backrest is installed on the locking mechanism 7 located on the upper side.

[0013] Preferably, the elastic member comprises a spring, and two ends of the spring respectively abut against the button and the lock sleeve.

[0014] Preferably, a first opening is provided on the lock sleeve, a third opening is provided on the button, part of the button is inserted into the first opening, one end of the latch is inserted into the third opening and connected to the button, and the other end of the latch extends from the third opening and is plugged and unpluggedly connected to the lock hole of the side rod after passing through the lock sleeve.

[0015] Preferably, in the chair frame, the tops of the two side rods are fixedly connected by a top rod, and the two ends of the top rod are respectively inserted into the tops of the two side rods and fixedly connected.

[0016] Preferably, in the chair frame, the bottoms of the two side rods are fixed to the same chair foot.

[0017] The beneficial effects of the technical solution of the utility model are as follows: the button is only used to drive the latch to slide on the lock sleeve, thereby making the latch enter and exit the lock hole of the side rod, thereby ensuring the locking effect; and the shape and structure of the above parts are simpler, which is also convenient for the manufacture of the chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the chair Figure 1 ;

[0019] Figure 2 The structure of the chair Figure 2;

[0020] Figure 3 This is a diagram of the chair structure after removing the back and seat;

[0021] Figure 4 This is a diagram of the chair structure after removing the back, seat and legs;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 for Figure 4 Enlarged view of point B in the middle;

[0024] Figure 7 Schematic diagram of the connection structure between the side rod and the locking mechanism Figure 1 ;

[0025] Figure 8 Schematic diagram of the connection structure between the side rod and the locking mechanism Figure 2 ;

[0026] Fig. 9 for Figure 6 Enlarged view of point C in the middle;

[0027] Fig.10 It is a schematic diagram of the structure of the button;

[0028] Fig.11 is a schematic diagram of the structure of the latch;

[0029] Fig.12 The structure of the lock sleeve is shown in FIG. Figure 1 ;

[0030] Fig.13 The structure of the lock sleeve is shown in FIG. Figure 2 .

[0031] Reference numerals: 1, chair leg; 11, support leg; 12, cross bar; 2, side bar; 21, lock hole; 22, connecting sleeve; 3, top bar; 4, chair seat; 5, chair back; 6, armrest;

[0032] 7. Locking mechanism; 71. Locking sleeve; 711. First connecting part; 712. First opening; 713. Limiting column; 714. First limiting part; 715. Limiting hole; 716. Second connecting part; 717. Second opening; 718. Connecting seat; 719. Threaded hole; 710. First connecting hole; 72. Latch; 721. Locking part; 722. Movable hole; 73. Button; 731. Third opening; 732. Third connecting hole; 733. Second connecting hole; 734. Second limiting part; 735. Limiting groove; 74. Connecting part; 75. Bolt; 76. Second axis. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. Example

[0038] like Figures 1 to 13 A chair is shown, comprising a chair frame, a seat 4 and a backrest 5, wherein the seat 4 and the backrest 5 are both mounted on the chair frame in a liftable manner; wherein the chair frame comprises two symmetrically arranged side rods 2, and the two side rods 2 are fixedly connected; the two side rods 2 are connected by a locking mechanism 7, and the two sets of locking mechanisms 7 are arranged up and down, the backrest 5 and the armrest are mounted on the locking mechanism 7 located on the upper side, and the seat 4 is mounted on the locking mechanism 7 located on the lower side;

[0039] The side bar 2 is provided with a plurality of locking holes 21 arranged vertically;

[0040] The locking mechanism 7 includes two fixedly connected lock sleeves 71, which are respectively sleeved on the two side rods 2. A button 73 is hinged on the lock sleeve 71, and a latch 72 is movably connected to the button 73. The latch 72 is slidably matched with the lock sleeve 71, and the latch 72 is plug-in connected to the lock hole 21 of the side rod 2; an elastic member is provided between the button 73 and the lock sleeve 71, and the elastic member can push the button 73 so that the button 73 drives the latch 72 to insert into the lock hole 21 of the side rod 2.

[0041] When adjusting the height of the seat 4 or the chair back 5: press the two buttons 73 on the same locking mechanism 7 with both hands respectively, the button 73 rotates and drives the latch 72 to move, so that the latch 72 withdraws from the locking hole 21 on the side rod 2, and then adjusts the locking mechanism 7 to a suitable height, and then the user releases the elastic member to push the button 73 to reset, and the button 73 drives the latch 72 to insert into the locking hole 21 on the side rod 2, thereby fixing the locking mechanism 7 and the seat 4 or chair back 5 installed on the locking mechanism 7 at the current height.

[0042] With such arrangement, the chair back 5 and the chair seat 4 can move up and down independently, which can better adapt to different groups of users; the chair back 5 and the armrests move synchronously, which can provide users with better support and experience, and make the structure of the chair simpler; the structure of the above-mentioned locking mechanism 7 is simpler, the operation is also more convenient, and the movement process of the latch 72 is more stable; the above-mentioned locking mechanism 7 requires two-handed operation, which can effectively avoid misoperation.

[0043] like Figures 1 to 9 As shown, in this embodiment, the chair frame also includes a top rod 3, the top rod 3 is arc-shaped, and both ends of the top rod 3 are protruded with a first plug-in portion, and both ends of the top rod 3 are provided with a first slot, and the first plug-in portion is located inside the first slot; the chair frame also includes a chair leg 1, and the chair leg 1 includes two symmetrically arranged support legs 11, which are fixedly connected by the support legs 11 through a cross bar 12, and the support legs 11 are in a herringbone shape; Figure 7 As shown, the chair leg 1 also includes a connecting sleeve 22, one end of which is protruded with a second plug-in portion 221, and the connecting sleeve 22 is also provided with a second slot, and the second plug-in portion 221 is located inside the second slot;

[0044] On the assembled chair frame, the two first plug-in parts on the top rod 3 are respectively inserted into the tops of the two side rods 2, and the tops of the side rods 2 are inserted into the first slots of the top rod 3, and the first plug-in parts and the side rods 2 are fixedly connected by bolts; the two connecting sleeves 22 are respectively sleeved on the bottoms of the two side rods 2 and fixedly connected by bolts; the second plug-in parts 221 of the two connecting sleeves 22 are respectively inserted into the two supporting feet 11, and the tops of the supporting feet 11 are inserted into the second slots of the connecting sleeves 22, and the connecting sleeves 22 and the supporting feet 11 are fixedly connected by bolts.

[0045] With such arrangement, the chair frame ensures that the structure of the chair frame is simpler while meeting the support strength requirements, and the chair frame is also easier to assemble and manufacture.

[0046] like Figure 1 and Figure 2 As shown, in this embodiment, the two armrests 6 are respectively mounted on two locking sleeves 71 located on the upper side, the locking sleeve 71 is located between the two armrests 6 , and the chair back 5 is arranged between the two locking sleeves 71 .

[0047] like Figure 1 and Figure 2 As shown, in this embodiment, the button 73 is arranged on the rear side of the lock sleeve 71. Such arrangement can avoid misoperation.

[0048] like Fig.12 and Fig.13 As shown, in this embodiment, a second connecting portion 716 is protruded from the lock sleeve 71, and a second opening 717 is provided on the second connecting portion 716. Figures 2 to 6 As shown, the two ends of the connecting portion 74 are respectively plugged into the second openings 717 of the two locking sleeves 71, a connecting seat 718 is protruded in the second opening 717, a threaded hole 719 is provided on the connecting seat 718, and the end of the connecting portion 74 is threadedly connected to the connecting seat 718 by a bolt. The chair back 5 and the chair seat 4 are respectively fixed to the connecting portions 74 of the two sets of locking mechanisms 7.

[0049] like Figure 5 and Fig.12 As shown, further, the locking mechanism 7 located on the upper side has a seat back 5 locking mechanism 7, the connecting portion 74 of the locking mechanism 7 is plate-shaped, and a guide groove connected to the second opening 717 is provided on the second connecting portion 716 of the locking sleeve 71 in the locking mechanism 7, and the connecting portion 74 of the locking mechanism 7 can slide along the guide groove. Such a configuration facilitates the assembly of the locking mechanism 7.

[0050] Further, such as Figure 6 and Fig.13As shown, the locking mechanism 7 located on the lower side has a seat back 5 locking mechanism 7, and the connecting portion 74 of the locking mechanism 7 is tubular. Both ends of the connecting portion 74 in the locking mechanism 7 are equipped with connecting plates, which are embedded in the second opening 717 of the locking sleeve 71. The connecting plate is threadedly connected to the connecting seat 718 of the second opening 717 on the locking sleeve 71 through bolts. Such an arrangement facilitates better supporting capacity of the locking mechanism 7.

[0051] like Figures 7 to 9 As shown, in this embodiment, a first connecting portion 711 is protruded on the rear side of the lock sleeve 71, a first opening 712 is formed on the first connecting portion 711, and a third opening 731 is provided on the button 73; a portion of the button 73 is inserted into the first opening 712 of the lock sleeve 71 and is hinged through the first axis, one end of the latch 72 is inserted into the third opening 731 and is connected to the button 73 through the second axis 76, and the other end of the latch 72 extends from the button 73 and is plugged and unplugged into the lock hole 21 of the side rod 2. Fig. 9 and Fig.10 As shown, the lock sleeve 71 is provided with a first connection hole 710 penetrating through the first opening 712, the button 73 is provided with a second connection hole 733 with a third opening 731, and the second shaft 76 passes through the first connection hole 710 and the second connection hole 733. Fig. 9 , Fig.10 and Fig.11 As shown, a movable hole 722 is opened on the latch 72, and a third connecting hole 732 is opened on the button 73. The second shaft 76 passes through the movable hole 722 of the latch 72, and the end of the second shaft 76 is inserted into the third connecting hole 732. The second shaft 76 is tightly fitted or fixedly connected to the button 73, and the inner diameter of the movable hole 722 is larger than the outer diameter of the second shaft 76.

[0052] In this embodiment, a limiting hole 715 communicating with the interior of the first opening 712 of the lock sleeve 71 is provided, and one end of the latch 72 extends from the limiting hole 715 and is plugged and unpluggedly connected to the lock hole 21 of the side rod 2. Furthermore, a first limiting portion 714 is protruded on the inner wall of the first opening 712, and the lock hole 21 is provided on the first limiting portion 714. Such a configuration makes the limiting hole 715 deeper, and can effectively ensure the stability of the connection between the latch 72 and the lock sleeve 71.

[0053] like Fig. 9 and Fig.11 As shown, in this embodiment, a locking portion 721 protrudes from the latch pin 72 , and the locking portion 721 cooperates with the limiting hole 715 . The locking portion 721 extends from the limiting hole 715 and is pluggably connected to the locking hole 21 of the side rod 2 .

[0054] like Fig. 9As shown, in this embodiment, the elastic member and the latch 72 are connected to the two ends of the button 73 respectively. Specifically, the elastic member and the latch are arranged on both sides of the first axis. The elastic member includes a spring, and the two ends of the spring are respectively against the button 73 and the lock sleeve 71; a limiting groove 735 is arranged in the third opening 731 of the button 73, and a limiting column 713 is protruded in the first opening 712 of the lock sleeve 71. One end of the spring is inserted into the limiting groove 735, and the other end of the spring is sleeved on the limiting column 713. Furthermore, a second limiting portion 734 is protruded in the third opening 731 of the button 73, and the limiting groove 735 is arranged on the second limiting portion 734. Such a configuration can ensure the stability of the spring position and the stability of the movement of the button 73.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A chair, comprising a chair frame, and a seat (4) and a chair back (5) mounted on the chair frame, characterized in that: The chair frame comprises two symmetrically arranged side rods (2), the two side rods (2) being fixedly connected; the chair seat (4) or the chair back (5) is mounted on the side rods via a locking mechanism; The side rod (2) is provided with a plurality of locking holes (21) arranged vertically; The locking mechanism (7) comprises two lock sleeves (71), the two lock sleeves (71) are respectively sleeved on the two side rods (2), the two lock sleeves (71) are fixedly connected via a connecting portion (74), and the seat (4) or the chair back (5) is mounted on the connecting portion (74); a button (73) is hingedly connected to the lock sleeve (71), a latch (72) is movably connected to the button (73), the latch (72) and the lock sleeve (71) are slidably matched, and the latch (72) is pluggably connected to a lock hole (21) of the side rod (2); and an elastic member for driving the latch (72) to be inserted into the lock hole (21) is provided between the button (73) and the lock sleeve (71).

2. A chair according to claim 1, characterized in that: The button (73) is arranged on the rear side of the lock sleeve (71).

3. A chair according to claim 1, characterized in that: The button (73) and the lock sleeve (71) are hinged via a first axis, and the elastic member and the latch (72) are arranged on both sides of the first axis.

4. A chair according to claim 1, characterized in that: The lock sleeve (71) is provided with a limiting hole (715) communicating with the interior thereof, and the latch (72) is provided with a locking portion (721) protruding therefrom; the locking portion (721) of the latch (72) protrudes from the limiting hole (715) and is pluggably connected to the locking hole (21) of the side rod (2).

5. A chair according to claim 1, characterized in that: The latch (72) is provided with a movable hole (722), the second shaft (76) passes through the movable hole (722) of the latch (72) and is connected to the button (73), and the inner diameter of the movable hole (722) is greater than the outer diameter of the second shaft (76).

6. A chair according to claim 1, characterized in that: Two sets of locking mechanisms (7) are arranged up and down, the seat (4) is mounted on the locking mechanism (7) located at the lower side, and the seat back (5) is mounted on the locking mechanism (7) located at the upper side.

7. A chair according to claim 1, characterized in that: The elastic member comprises a spring, and two ends of the spring respectively abut against the button (73) and the lock sleeve (71).

8. The chair according to claim 1, characterized in that: The lock sleeve (71) is provided with a first opening (712), the button (73) is provided with a third opening (731), a portion of the button (73) is inserted into the first opening (712), one end of the latch (72) is inserted into the third opening (731) and connected to the button (73), and the other end of the latch (72) extends from the third opening (731) and passes through the lock sleeve (71) to be plugged and unplugged into the lock hole (21) of the side rod (2).

9. The chair according to claim 1, characterized in that: In the chair frame, the tops of the two side rods (2) are fixedly connected via a top rod (3), and the two ends of the top rod (3) are respectively inserted into the tops of the two side rods (2) and fixedly connected.

10. The chair according to claim 1, characterized in that: In the chair frame, the bottoms of the two side rods (2) are fixed on the same chair foot (1).

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