CN218852285U

CN218852285U - Chair back structure with lifting adjusting structure

Info

Publication number: CN218852285U
Application number: CN202223421425.9U
Authority: CN
Inventors: 代贵林
Original assignee: Foshan Chunchen Furniture Co ltd
Current assignee: Foshan Chunchen Furniture Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-04-14
Anticipated expiration: 2032-12-19

Abstract

The utility model discloses a take back of chair structure of lift adjustment structure, include stay tube, the back of the chair frame of connection on the stay tube of being connected with the bedplate, connect back main part and the lift adjustment mechanism on the back of the chair frame, lift adjustment mechanism is including setting up at the inside locking block of stay tube, setting spout, the locking hole of setting on the support tube, setting at the outside adjusting screw of support tube on the support tube, adjusting screw passes locking hole and spout and is connected with the locking block. The lifting adjusting mechanism of the utility model adjusts the height of the chair back by matching the adjusting screw rod with the locking block positioned in the supporting tube, has simple and reasonable structure, and the locking block is arranged in the supporting tube for convenient processing and installation; further, the utility model discloses in fixing bolt connects into support sleeve and arc limit from back of the chair connecting plate direction, the head of bolt is located back of the chair connecting plate, covers back cushion connecting plate and cushion after, the head of bolt is pressed in the cushion, and connection stability is high.

Description

Chair back structure with lifting adjusting structure

Technical Field

The utility model relates to a chair accessory technical field, concretely relates to take back of chair structure of lift adjustment structure.

Background

The rotary round stool is also often called a rotary round stool, a rotary bar stool, etc., and generally comprises a seat plate, chair legs for supporting the seat plate, a rotary lifting assembly arranged on the seat plate and the chair legs, and a chair back connected to the seat plate, wherein the chair back comprises a chair back frame and a chair back plate connected to the chair back frame.

In prior art, some manufacturers design the chair back plate into one piece with the chair back frame, and select whether to install the back cushion on the chair back plate according to the user's demand, though this structure is simple and firm, but integrated into one piece's structure makes the back of the chair unable to realize and adjusts from top to bottom, and the structure of chair back plate is injectd simultaneously, and the molding of chair back plate and back cushion is injectd, can't satisfy people diversified demand. The specific structure can refer to the technical scheme described in the Chinese utility model patent with the patent number 201920922644.4.

The chair back is designed into a split structure by some manufacturers, and comprises a supporting tube connected with the seat plate, a chair back frame connected to the supporting tube, a chair back plate connected to the chair back frame, and a lifting adjusting structure arranged between the supporting tube and the chair back frame. Although this structure is convenient for the dismouting, the processing degree of difficulty of pre-buried band iron in stay tube surface is high, needs to pass through specific press etc.. In addition, the chair back plate is directly connected with the chair back frame through a bolt, the bolt penetrates through the pipe body of the chair back frame from the back of the chair back frame to be in threaded connection with the chair back plate, and the structure is simple in structure and convenient to disassemble and assemble. But the joint strength is not high, and in the use, the bolt often becomes flexible, needs often to strengthen it. The specific structure can refer to the technical scheme recorded in the Chinese utility model patent with the patent number of 201520473478.6. For this reason, the present inventors have made improvements to the above-described technical problems.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, a chair back structure with a lifting adjusting structure is provided.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a take back of chair structure of lift adjustment structure, includes the stay tube of being connected with the bedplate, connects the back of the chair frame on the stay tube, connects the back main part on the back of the chair frame, back of the chair frame includes the support sleeve who cup joints with the stay tube, connects the arc limit on support sleeve, the top at support sleeve is installed on the arc limit, support sleeve's bottom is inserted at the top of stay tube to be equipped with lift adjustment mechanism between stay tube and the support sleeve, lift adjustment mechanism is including setting up at the inside locking piece of stay tube, setting spout, the locking hole of setting on support sleeve, setting at the outside adjusting screw of support sleeve on the stay tube, adjusting screw passes locking hole and spout and is connected with the locking piece.

The utility model discloses in, be equipped with sliding sleeve between stay tube and the support sleeve, sliding sleeve inserts support sleeve's bottom and embolias the top of stay tube, relative slip between sliding sleeve and the stay tube.

In the present invention, open slots are provided on both sides of the sliding sleeve.

The utility model discloses in, sliding sleeve's bottom is equipped with the diameter and is greater than support sleeve's annular spacing collar.

The utility model discloses in, the back main part includes the back of the chair connecting plate of being connected with the back of the chair frame, connects the cushion connecting plate on the back of the chair connecting plate, connects the cushion on the cushion connecting plate, be equipped with the T type recess that corresponds with support sleeve and arc limit on the back of the chair connecting plate.

The utility model discloses in, be equipped with a plurality of connecting holes on the T type recess, the position that corresponds with the connecting hole on support sleeve and the arc edge is equipped with the connection boss, and fixing bolt passes the connecting hole and is connected with the connection boss.

The utility model discloses in, the laminating of cushion connecting plate is on back of the chair connecting plate to be equipped with a plurality of screw bosss on the back of the chair connecting plate, be equipped with the through-hole corresponding with the screw boss on the cushion connecting plate, connecting bolt passes the through-hole and is connected with the screw boss.

The utility model has the advantages that: the utility model has the advantages that the lifting adjusting mechanism is arranged in the chair back structure, the height of the chair back is adjusted by the cooperation of the adjusting screw and the locking block positioned in the supporting tube, the structure is simple and reasonable, and the locking block is arranged in the supporting tube for convenient processing and installation; further, the utility model discloses a back main part comprises back of the chair connecting plate, cushion connecting plate and cushion, and back of the chair connecting plate is connected with support sleeve and arc limit, and fixing bolt connects into support sleeve and arc limit from back of the chair connecting plate direction, and the head of bolt is located back of the chair connecting plate, covers cushion connecting plate and cushion after, the head of bolt is pressed in the cushion, not only is difficult to become flexible, and connection stability is high, does not have the accessory to expose moreover, and the appearance is pleasing to the eye.

Drawings

The present invention is further described below with reference to the accompanying drawings and embodiments:

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is a schematic structural view of another angle in the present embodiment;

FIG. 3 is a rear view of the present embodiment;

FIG. 4 isbase:Sub>A sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view of portion B of FIG. 4;

FIG. 6 is an exploded view of the present embodiment;

FIG. 7 is an exploded view of another perspective of the present embodiment;

fig. 8 is a schematic view of the connection structure between the present embodiment and the seat plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", 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 present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like, are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 8, the chair back structure with a lift adjustment structure provided in this embodiment includes a support tube 1 connected to a seat plate, a chair back frame 2 connected to the support tube 1, and a backrest main body 3 connected to the chair back frame 2, where the chair back frame 2 includes a support sleeve 21 sleeved with the support tube 1, and an arc-shaped edge 22 connected to the support sleeve 21. The supporting tube 1 is a metal tube, and the bottom of the supporting tube 1 is bent downwards by 90 degrees and is connected with a supporting seat at the bottom of the seat plate through a screw. Both ends of the arc-shaped side 22 are bent in an arc shape and extended toward the front of the seat while forming a back rest frame and an armrest. The middle part of the arc-shaped edge 22 is arranged on the top of the support sleeve 21, and a T shape is formed when the support sleeve is seen from the back side.

In the present embodiment, the top of the support tube 1 is inserted into the bottom of the support sleeve 21, and a lifting adjusting mechanism is disposed between the support tube 1 and the support sleeve 21, the lifting adjusting mechanism includes a locking block 31 disposed inside the support tube 1, a sliding slot 11 disposed on the support tube 1, a locking hole 23 disposed on the support sleeve 21, and an adjusting screw 32 disposed outside the support sleeve 21, and the adjusting screw 32 is connected to the locking block 31 through the locking hole 23 and the sliding slot 11. The elongated slot of the runner 11, the length of the runner 11 determines the adjustable height. The locking block 31 is made of metal, a screw hole connected with the adjusting screw rod 32 is formed in the middle of the locking block 31, and the adjusting screw rod 32 is screwed to clamp the support tube 1 and the support sleeve 21 between the locking block 31 and the adjusting screw rod 32, so that the relative fixation of the height of the backrest frame 2 and the support tube 1 is realized. When the adjustment is needed, the adjusting screw 32 is turned reversely to loosen the locking block 31 and the adjusting screw 32, and then the backrest frame 2 is pulled up or lowered to a fixed position, and the adjusting screw 32 is screwed again.

In a preferred embodiment, in order to make the sliding between the support tube 1 and the support sleeve 21 smoother, a sliding sleeve 4 made of a plastic material is disposed between the support tube 1 and the support sleeve 21, and an inner wall of the sliding sleeve 4 is a smooth wear-resistant surface, so that the sliding sleeve 4 not only can increase the smoothness of the sliding, but also can increase and avoid damage to the outer surface of the support tube 1. The main body part of the sliding sleeve 4 is inserted into the bottom of the supporting sleeve 21 and sleeved on the top of the supporting tube 1, the sliding sleeve 4 and the supporting sleeve 21 are relatively fixed, and the sliding sleeve 4 and the supporting tube 1 slide relatively. For the convenience of sleeving, the two sides of the sliding sleeve 4 are provided with open grooves 41, so that the pipe diameter of the main body part of the plastic sliding sleeve 4 can be adjusted in a small range. In this embodiment, the bottom of the sliding sleeve 4 is provided with an annular stop collar 42 having a diameter larger than that of the support sleeve 21, and the annular stop collar 42 is located at the bottom of the support sleeve 21 to prevent the whole sliding sleeve 4 from being inserted into the support sleeve 21. The middle part of the sliding sleeve 4 is provided with a hole position corresponding to the adjusting screw 32.

In this embodiment, the backrest main body 3 includes a backrest connecting plate 38 connected to the backrest frame 2, a cushion connecting plate 39 connected to the backrest connecting plate 38, and a cushion 33 connected to the cushion connecting plate 39, and the backrest connecting plate 38 and the cushion connecting plate 39 are both hard plastic plates. The chair back connecting plate 38 is provided with a T-shaped groove 34 corresponding to the support sleeve 21 and the arc-shaped edge 22, and the half edges of the support sleeve 21 and the arc-shaped edge 22 are inserted into the T-shaped groove 34, so that preliminary fixing and positioning are formed. The T-shaped groove 34 is provided with a plurality of connecting holes 35, connecting bosses 24 are arranged at positions corresponding to the connecting holes 35 on the support sleeve 21 and the arc-shaped edge 22, and fixing bolts penetrate through the connecting holes 35 to be connected with the connecting bosses 24, so that the connection between the chair back connecting plate 38 and the chair back frame 2 is realized. The coupling hole 35 is larger than the coupling boss 24, and the coupling boss 24 is inserted into the coupling hole 35, thereby making the coupling thereof more stable. Further, the back cushion connecting plate 39 is attached to the back cushion connecting plate 38, a plurality of screw bosses 37 are arranged on the back cushion connecting plate 38, through holes 36 corresponding to the screw bosses 37 are formed in the back cushion connecting plate 39, the screw bosses 37 are inserted into the through holes 36, and the connecting bolts penetrate through the through holes 36 to be connected with the screw bosses 37. The back cushion 33 is fixedly connected with the back cushion connecting plate 39 through glue or a buckle structure. The back of the back cushion 33 is pressed on the fixing bolt and the connecting bolt, so that the back cushion is not easy to loosen, the connection stability is high, no accessories are exposed, and the appearance is attractive.

The above is only the preferred embodiment of the present invention, as long as the technical solution of the purpose of the present invention is realized by the substantially same means, all belong to the protection scope of the present invention.

Claims

1. The utility model provides a take back of chair structure of lift adjustment structure, includes stay tube (1) of being connected with the bedplate, connects back of the chair frame (2) on stay tube (1), connects back main part (3) on back of the chair frame (2), back of the chair frame (2) include with stay tube (1) support sleeve (21) that cup joints, connect arc limit (22) on support sleeve (21), the top at support sleeve (21) is installed in arc limit (22), the bottom of support sleeve (21) is inserted at the top of stay tube (1) to be equipped with lift adjustment mechanism, its characterized in that between stay tube (1) and support sleeve (21): the lifting adjusting mechanism comprises a locking block (31) arranged inside the supporting pipe (1), a sliding groove (11) arranged on the supporting pipe (1), a locking hole (23) arranged on the supporting sleeve (21) and an adjusting screw rod (32) arranged outside the supporting sleeve (21), wherein the adjusting screw rod (32) penetrates through the locking hole (23) and the sliding groove (11) to be connected with the locking block (31).

2. The chair back structure with lift adjustment structure of claim 1, wherein: a sliding sleeve (4) is arranged between the supporting tube (1) and the supporting sleeve (21), the sliding sleeve (4) is inserted into the bottom of the supporting sleeve (21) and sleeved into the top of the supporting tube (1), and the sliding sleeve (4) and the supporting tube (1) slide relatively.

3. The chair back structure with lift adjustment structure of claim 2, wherein: open grooves (41) are formed in two sides of the sliding sleeve (4).

4. The chair back structure with the lifting adjusting structure as claimed in claim 2, wherein: and an annular limiting ring (42) with the diameter larger than that of the support sleeve (21) is arranged at the bottom of the sliding sleeve (4).

5. The chair back structure with the lifting adjusting structure as claimed in claim 1, wherein: the backrest body (3) comprises a backrest connecting plate (38) connected with the backrest frame (2), a back cushion connecting plate (39) connected to the backrest connecting plate (38), and a back cushion (33) connected to the back cushion connecting plate (39), wherein a T-shaped groove (34) corresponding to the support sleeve (21) and the arc-shaped edge (22) is formed in the backrest connecting plate (38).

6. The chair back structure with the lifting adjusting structure as claimed in claim 5, wherein: be equipped with a plurality of connecting holes (35) on T type recess (34), the position that corresponds with connecting hole (35) on support sleeve (21) and arc limit (22) is equipped with and connects boss (24), and fixing bolt passes connecting hole (35) and is connected with connection boss (24).

7. The chair back structure with the lifting adjusting structure as claimed in claim 5, wherein: cushion connecting plate (39) laminating is on back of the chair connecting plate (38) to be equipped with a plurality of screw boss (37) on back of the chair connecting plate (38), be equipped with on cushion connecting plate (39) with screw boss (37) corresponding through-hole (36), connecting bolt passes through-hole (36) and is connected with screw boss (37).