Lifting type chair back structure convenient to disassemble and assemble and chair

Abstract

The utility model discloses a lifting type chair back structure convenient to disassemble and assemble and a chair, and the lifting type chair back structure convenient to disassemble and assemble comprises a back frame suitable for being connected with a chair seat; the back plate is arranged on the back frame in a sliding mode in the vertical direction, the back plate is provided with a disassembly and assembly groove and multiple gear grooves which are communicated with each other, the disassembly and assembly groove is provided with a first opening, and the multiple gear grooves are formed in the vertical direction at intervals; the adjusting assembly is installed on the back frame, the adjusting assembly comprises a driving part and an inserting block, and the driving part is connected with the inserting block and drives the inserting block to move in the first direction so as to be inserted into the at least one gear groove; the driving part is connected with and drives the inserting block to move in the direction deviating from the first direction so as to disengage from the gear groove; the inserting block is in sliding fit with the dismounting groove and is suitable for being separated from the back plate through the first opening. The back plate can be optionally adjusted to ascend or descend at any position, the structure is simple, and disassembly and assembly are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a liftable seat back structure which is easy to disassemble and assemble, and a seat with the liftable seat back structure which is easy to disassemble and assemble. Background Art

[0002] In the related art, the seat is equipped with many structures that can be adjusted by the user according to his or her own usage habits or comfort. For example, since the body shapes of the seat users are different, different users have different requirements for the height of the seat back. A lifting mechanism is set on the seat back to adjust the height of the seat back to meet the usage needs of different users. In some related arts, the lifting and adjusting structure of the seat back is adjusted in a single direction in sequence within the gear position, and resets to the initial gear position after adjusting to the final position. It cannot be adjusted in the opposite direction in the middle, and the adjustment flexibility is poor. In addition, the adjustment structure is built into the seat back and is not easy to disassemble, or the assembly after disassembly is extremely complicated, and it is difficult to coordinate and control the packaging cost and assembly cost. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a liftable chair back structure that is easy to disassemble and assemble, and the liftable chair back structure that is easy to disassemble and assemble can selectively adjust the back plate to rise or fall in any position, has a simple structure, and is easy to disassemble and assemble.

[0004] The utility model also provides a seat with the above-mentioned liftable seat back structure which is easy to disassemble and assemble.

[0005] According to the utility model, a liftable chair back structure that is easy to assemble and disassemble comprises:

[0006] A back frame adapted to be connected to a chair seat;

[0007] A back plate is slidably arranged on the back frame in a vertical direction, the back plate is provided with a disassembly slot and a shift slot that are interconnected, the disassembly slot has a first opening, there are a plurality of the shift slots, and the plurality of the shift slots are arranged at intervals in the vertical direction;

[0008] An adjustment component is installed on the back frame, and the adjustment component includes a driving component and a plug-in block. The driving component is connected to and drives the plug-in block to move along a first direction to insert into at least one of the gear slots; the driving component is connected to and drives the plug-in block to move away from the first direction to disengage from the gear slot; the plug-in block is slidably matched with the disassembly and assembly slot, and is suitable for being separated from the back panel through the first opening.

[0009] According to the utility model, a lifting chair back structure that is easy to disassemble and assemble has at least the following beneficial effects: the operating driving component can drive the plug-in block to insert into and disengage from the gear slot, so that the back panel can be lifted or lowered by hand, and the back panel can be adjusted up or down at will, and the back panel can be kept at the adjusted height for use, and the flexibility of adjustment and use is high; and after the driving component drives the plug-in block to disengage from the gear slot, the back panel can be controlled by hand to disengage from the plug-in block through the first opening. The overall structure is simple and easy to disassemble and assemble, which can not only reduce packaging costs but also enable users to assemble it themselves conveniently.

[0010] According to the liftable chair back structure that is easy to disassemble and assemble described in the utility model, the disassembly and assembly slot extends in the vertical direction, and the gear slot is arranged on the side wall of the disassembly and assembly slot.

[0011] According to the liftable chair back structure that is easy to assemble and disassemble described in the utility model, the first opening is located at the lower side of the disassembly slot.

[0012] According to the liftable chair back structure that is easy to assemble and disassemble described in the utility model, a connecting block is fixedly installed on the outer side of the back plate, and the disassembly slot and the gear slot are both arranged on the connecting block.

[0013] According to the liftable chair back structure that is easy to assemble and disassemble described in the utility model, the back frame is provided with a receiving groove, and the connecting block is slidably arranged in the receiving groove.

[0014] According to the utility model, a lifting chair back structure that is easy to disassemble and assemble is described. The driving component includes a driving handle, the plug-in block is slidably arranged on the back frame along the horizontal direction, and the driving handle moves along the vertical direction. The driving handle and the plug-in block are matched with an oblique groove to drive the plug-in block out of the gear slot.

[0015] According to the utility model, a lifting chair back structure that is easy to disassemble and assemble is described, the transmission cooperation of the inclined groove includes a transmission groove and a driving block, the driving block is fixedly connected to the driving handle, the transmission groove is arranged on the plug-in block, the length direction of the transmission groove is inclined with the vertical direction, and the driving block is slidably arranged in the transmission groove and abuts against the groove wall of the transmission groove.

[0016] According to the utility model, a liftable chair back structure that is easy to disassemble and assemble, the driving component also includes a reset spring, one end of the reset spring presses the back frame, and the other end presses the driving handle for reset, so as to drive the plug-in block into the gear slot through the transmission cooperation of the inclined slot.

[0017] According to the utility model, a liftable chair back structure that is easy to disassemble and assemble is provided, there are two groups of gear slots, which are arranged opposite to each other, there are two plug-in blocks, and plug-in parts are provided on the opposite sides of the two plug-in blocks, and the plug-in parts correspond to the gear slots one by one and are plug-in-matched with the gear slots.

[0018] The seat according to the utility model comprises a liftable seat back structure which is easy to assemble and disassemble.

[0019] The seat according to the utility model has at least the following beneficial effects: the operating driving component can drive the plug-in block to be inserted into and out of the gear slot, so that the back panel can be lifted or lowered by hand, and the back panel can be adjusted up or down at will, and the back panel can be kept at the adjusted height for use, and the flexibility of adjustment and use is high; and after the driving component drives the plug-in block out of the gear slot, the back panel can be controlled by hand to be out of the plug-in block through the first opening, and the overall structure is simple and easy to disassemble and assemble, which can not only reduce the packaging cost, but also enable users to assemble it by themselves conveniently.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 This is a first exploded view of a liftable chair back structure that is easy to disassemble and assemble according to an embodiment of the utility model;

[0023] Figure 2 This is a schematic cross-sectional view of a liftable chair back structure that is easy to assemble and disassemble according to an embodiment of the utility model;

[0024] Figure 3 This is a structural schematic diagram of a back frame and an adjustment component of a liftable chair back structure that is easy to disassemble and assemble according to an embodiment of the utility model;

[0025] Figure 4 A second exploded view of a liftable chair back structure that is easy to disassemble and assemble according to an embodiment of the utility model;

[0026] Figure 5 This is a structural schematic diagram of a connecting block of a liftable chair back structure that is easy to disassemble and assemble according to an embodiment of the utility model;

[0027] Figure 6 This is an overall schematic diagram of a liftable chair back structure that is easy to disassemble and assemble according to an embodiment of the utility model;

[0028] Figure 7 It is a schematic diagram of the structure of a seat according to an embodiment of the utility model.

[0029] Description of Figure Numbers:

[0030] Back frame 100; accommodating groove 101; second opening 1011; first limiting groove 102; mounting groove 103; guide bar 110; limiting column 120; partition 130;

[0031] Back plate 200; connecting block 210; disassembly slot 2101; first opening 21011; gear slot 2102; limit strip 211; arc-shaped protrusion 2111;

[0032] Adjustment assembly 300; driving component 310; driving handle 311; second limiting groove 31101; driving block 3111; positioning protrusion 3112; return spring 312; plug-in block 320; plug-in portion 321; transmission groove 3201;

[0033] Decorative cover 400;

[0034] Seat 500. DETAILED DESCRIPTION

[0035] 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are 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 cannot be understood as a limitation on the present invention.

[0037] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0039] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", 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.

[0040] In the related art, the seat is equipped with many structures that can be adjusted by the user according to his or her own usage habits or comfort. For example, since the body shapes of the seat users are different, different users have different requirements for the height of the seat back. A lifting mechanism is set on the seat back to adjust the height of the seat back to meet the usage needs of different users. In some related arts, the lifting and adjusting structure of the seat back is adjusted in a single direction in sequence within the gear position, and resets to the initial gear position after adjusting to the final position. It cannot be adjusted in the opposite direction in the middle, and the adjustment flexibility is poor. In addition, the adjustment structure is built into the seat back and is not easy to disassemble, or the assembly after disassembly is extremely complicated, and it is difficult to coordinate and control the packaging cost and assembly cost.

[0041] For this reason, Figures 1 to 7As shown in the figure, a lifting chair back structure that is easy to disassemble and assemble is proposed by the utility model, which includes a back frame 100, a back plate 200 slidably arranged on the back frame 100 along the vertical direction, and an adjustment component 300 installed on the back frame 100, and the adjustment component 300 is used to adjust the installation height of the back plate 200 relative to the back frame 100. It is easy to understand that the back frame 100 is suitable for connecting with the seat 500. For example, the back frame 100 and the seat 500 are fixedly connected by screws, and the two can be disassembled. For another example, the back frame and the seat are rotatably connected, such as the back frame and the seat are linked, and the back frame has an adaptive adjustment function when the user sits (not shown in the figure). Among them, the adjustment component 300 includes a driving component 310 and a plug-in block 320, and the back panel 200 is provided with a plurality of gear slots 2102 arranged at intervals along the vertical direction. In application, the driving component 310 connects and drives the plug-in block 320 to move along the first direction to insert at least one gear slot 2102, so that the back panel 200 is maintained at a certain height relative to the back frame 100. In addition, the back panel 200 is provided with a disassembly and assembly slot 2101 connected to the gear slot 2102. On the one hand, the driving component 310 can be connected and drive the plug-in block 320 to move in a direction away from the first direction to disengage from the gear slot 2102. At this time, the user can manually lift or lower the back panel 200, and then insert the plug-in block 320 into another gear slot 2102, so that the back panel 200 is maintained at another height relative to the back frame 100, thereby realizing the lifting and lowering adjustment of the back panel 200; on the other hand, the disassembly and assembly slot 2101 has a first opening 21011, and the driving component 310 can be connected and drive the plug-in block 320 to move in a direction away from the first direction to disengage from the gear slot 2102. At this time, the user can manually lift or lower the back panel 200. Since the plug-in block 320 slides with the disassembly and assembly slot 2101, the plug-in block 320 can be separated from the back panel 200 through the first opening 21011, so that the back panel 200 can be taken out. Optionally, the first direction is a horizontal outward direction, for example, the plug-in block 320 is located at an eccentric position of the disassembly and assembly slot 2101, and the horizontal outward direction is the movement direction of the plug-in block 320 away from the center of the disassembly and assembly slot 2101. It is easy to understand that the horizontal does not specifically refer to complete coincidence with the horizontal line. In some embodiments, the gear slot is arranged obliquely with the horizontal direction and forms an angle (not shown in the figure). In application, the plug-in block can be plugged into the gear slot and can support the upper wall of the gear slot. It should be noted that the operating drive component 310 can drive the plug-in block 320 to insert and disengage from the gear slot 2102, so that the back panel 200 can be lifted or lowered by hand, and the back panel 200 can be adjusted up or down at will, and the back panel 200 can be kept at the adjusted height for use, and the flexibility of adjustment and use is relatively high. Moreover, after the driving component 310 drives the plug-in block 320 to disengage from the gear slot 2102, the back panel 200 can be manually controlled to disengage from the plug-in block 320 through the first opening 21011. The overall structure is simple and easy to disassemble and assemble, which can not only reduce packaging costs but also enable users to assemble it themselves conveniently.It is easy to understand that when the user assembles, the plug-in block 320 enters the disassembly slot 2101 through the first opening 21011 and can be matched with the shift slot 2102 to achieve installation.

[0042] Specifically, refer to Figure 1 and Figure 2 , the disassembly slot 2101 extends in the vertical direction, and the gear slot 2102 is provided on the side wall of the disassembly slot 2101. After the plug-in block 320 moves inward and disengages from the gear slot 2102, it can slide vertically directly in the disassembly slot 2101. After sliding to a suitable height, the plug-in block 320 is driven to plug into the gear slot 2102 again through the driving component 310 to complete the adjustment of the height of the back plate 200, which is convenient to adjust and easy to use. In some embodiments, the disassembly slot has a curved structure, and the first opening is located at the end of the curved structure, that is, after the plug-in block is separated from the gear slot, it needs to undergo nonlinear movement before it can be moved out from the first opening (not shown in the figure). In some embodiments of the utility model, the first opening 21011 is located on the lower side of the disassembly and assembly slot 2101, in the same direction as the lifting and lowering adjustment of the back panel 200, which makes the operation more convenient. During application, the user needs to overcome gravity and lift the back panel 200 upwards so that it can be separated from the plug-in block 320 through the first opening 21011. Compared with the first opening arranged on the upper side of the disassembly and assembly slot, the back panel 200 will not fall downward and separate due to the user's hand slipping or loose grip under the action of gravity, thereby ensuring the safety of operation.

[0043] Further, refer to Figure 3 and Figure 4The driving component 310 includes a driving handle 311, and the plug-in block 320 is slidably arranged on the back frame 100 in the horizontal direction. The driving handle 311 moves in the vertical direction. There is an oblique notch transmission match between the driving handle 311 and the plug-in block 320 to drive the plug-in block 320 out of the gear slot 2102. The user presses the driving handle 311 to drive the pressing handle to move vertically. Under the horizontal constraint of the plug-in block 320, the driving handle 311 drives the plug-in block 320 to move horizontally through the oblique notch transmission match. The structure is simple and the operation is convenient. Among them, the groove wall of the accommodating groove 101 of the back frame 100 is provided with a horizontally arranged guide bar 110, and the guide bar 110 guides the horizontal movement of the plug-in block 320. In addition, the back frame 100 is provided with a limiting column 120, and the driving handle 311 is provided with a second limiting groove 31101. The limiting column 120 is slidably arranged in the second limiting groove 31101 to guide the lifting and lowering movement of the driving handle 311. In some embodiments of the utility model, the oblique slot transmission cooperation includes a transmission groove 3201 and a driving block 3111, the driving block 3111 is fixedly connected to the driving handle 311, and the transmission groove 3201 is arranged on the plug-in block 320. Among them, the length direction of the transmission groove 3201 is inclined with the vertical direction, and the driving block 3111 is slidably arranged in the transmission groove 3201 and abuts against the groove wall of the transmission groove 3201. It is easy to understand that the horizontal movement displacement of the plug-in block 320 depends on the vertical movement position of the driving block 3111 on the one hand, and on the inclination angle of the transmission groove 3201 on the other hand. When the inclination angle with the vertical direction is small, that is, the width of the transmission groove 3201 along the horizontal direction is small; when the inclination angle with the vertical direction is large, that is, the width of the transmission groove 3201 along the horizontal direction is large, a larger horizontal displacement can be performed. In some embodiments, the driving handle 311 is provided with a second limiting groove 31101 extending in the vertical direction, the back frame 100 is fixedly connected to the limiting column 120, and the limiting column 120 is slidably arranged in the second limiting groove 31101; along the vertical direction, the length of the second limiting groove 31101 is less than or equal to the height of the transmission groove 3201. On the one hand, it provides a sense of in-position feedback for the user to operate the driving handle 311. For example, when the length of the second limiting groove 31101 is equal to the height of the transmission groove 3201, when the limiting column 120 abuts against the upper wall of the second limiting groove 31101, the driving block 3111 abuts against the groove wall at the lower end of the transmission groove 3201; when the limiting column 120 abuts against the lower wall of the second limiting groove 31101, the driving block 3111 abuts against the groove wall at the upper end of the transmission groove 3201. On the other hand, it is possible to prevent the plug-in block 320 from excessively displacing the transmission slot 3201 and making it difficult to reset and cooperate with the shift slot 2102 again.

[0044] In addition, there are two plug-in blocks 320, and a partition 130 is provided in the middle of the back frame 100. The two plug-in blocks 320 are respectively located on both sides of the partition 130. When the driving handle 311 drives the two plug-in blocks 320 to move toward each other to disengage from the gear slot 2102, the plug-in blocks 320 can move to abut against the partition 130 at most, that is, the plug-in blocks 320 move between the partition 130 and the slot wall of the gear slot 2102, and both ends of the horizontal movement are restricted, and it is not easy to disengage from the misalignment. In addition, there are two groups of gear slots 2102, and the two groups of gear slots 2102 are arranged oppositely. The two plug-in parts 321 are provided on the opposite sides of the two plug-in blocks 320. The plug-in parts 321 correspond to the gear slots 2102 one by one and are plugged and matched with the gear slots 2102, so that the overall connection is more stable and firm. Furthermore, the end of the plug-in block 320 is a multi-claw structure, which is suitable for plugging into at least two gear slots 2102, that is, the end of the plug-in block 320 is provided with a plurality of plug-in parts 321 arranged at intervals in the vertical direction, which can be plugged and fixed with adjacent or spaced gear slots 2102 at the same time, thereby further improving the stability of the connection.

[0045] In some embodiments of the present invention, the driving component 310 includes a reset spring 312. It is easy to understand that the reset spring 312 is connected to one of the driving handle 311 and the plug-in block 320. When the adjustment is completed and there is no external force on the driving handle 311, the reset spring 312 can directly reset the plug-in block 320 and drive the plug-in portion 321 of the plug-in block 320 to insert into the gear slot 2102. Alternatively, the reset spring 312 resets the driving handle 311 and drives the plug-in portion 321 of the plug-in block 320 to insert into the gear slot 2102 through the cooperation between the driving block 3111 and the transmission slot 3201. Figures 1 to 4 As shown, one end of the return spring 312 presses against the back frame 100, and the other end presses against the driving handle 311 to reset, so as to drive the plug-in block 320 to insert into the gear slot 2102 through the transmission of the oblique slot. Among them, the inner side of the back frame 100 is provided with a mounting slot 103, and the driving handle 311 is provided with a positioning protrusion 3112. The return spring 312 is placed in the mounting slot 103, and one end of the return spring 312 is pressed and connected with the upper wall of the mounting slot 103, and the other end is sleeved on the positioning protrusion 3112 and pressed and connected with the driving handle 311. In the natural use state, the return spring 312 presses the driving handle 311 to move downward, and the driving block 3111 abuts against the slot wall of the transmission slot 3201 facing the side of the partition 130, driving the plug-in block 320 to be plugged and fixed with the gear slot 2102, fully considering the effect of gravity, and ensuring the stability of the seat in the natural use state.

[0046] In some embodiments, the disassembly and assembly grooves and the shifting grooves are directly opened on the back plate (not shown in the figure), but this will cause the local thickness of the back plate to be reduced, weakening the structural rigidity of the back plate. In some embodiments, the back plate is partially thickened and the disassembly and assembly grooves and the shifting grooves are opened at the thickened part (not shown in the figure), but the disassembly and assembly grooves and the shifting grooves used for the matching effect need to be processed to ensure the matching accuracy. However, the irregular shape of the back plate will increase the difficulty of clamping and positioning, and the processing cost is high. Figure 1 In some embodiments of the utility model, a connection block 210 is fixedly installed on the outer side of the back plate 200, and the disassembly groove 2101 and the gear groove 2102 are both provided on the connection block 210. There is no need to directly process the outer wall of the back plate 200, thereby ensuring that the structural rigidity of the back plate 200 is not damaged. In addition, a connection block 210 with a standard shape can be provided to reduce the difficulty of clamping and positioning, thereby reducing the processing cost. Optionally, the connection block 210 is fixed to the back plate 200 by screws, and the connection block 210 can be disassembled and replaced separately, which is more maintainable. Further, referring to Figure 2 The back frame 100 is provided with a receiving groove 101, and the connecting block 210 is slidably arranged in the receiving groove 101. The back plate 200 after assembly can fit the back frame 100, and has good aesthetics. Figures 3 to 5 , the side wall of the receiving groove 101 is provided with a first limiting groove 102, and the first limiting groove 102 extends in the vertical direction. Correspondingly, the side wall of the connecting block 210 is provided with a limiting strip 211, and the limiting strip 211 is placed in the first limiting groove 102, and the limiting strip 211 is provided with an arc-shaped protrusion 2111, and the arc-shaped protrusion 2111 is slidably matched with the groove wall of the first limiting groove 102. By matching the arc-shaped protrusion 2111 with an arc surface with the groove wall of the first limiting groove 102, the connecting block 210 has better sliding performance in the vertical direction relative to the back frame 100. Optionally, the connecting block 210 is a plastic part, and a small amount of elastic deformation can occur when the arc-shaped protrusion 2111 is pressed against the groove wall of the first limiting groove 102, which can absorb the matching error of the assembly between the connecting block 210 and the back frame 100.

[0047] In some embodiments, the back frame 100 is provided with a second opening 1011, and the second opening 1011 can allow the connection block 210 to pass through so as to be separated from the back frame 100. When the connection block 210 is placed in the receiving groove 101 by adopting a hidden design, optionally, the second opening is located at the end surface of the receiving groove, and the connection block can be taken out from the end surface of the second opening, that is, the front of the seat (not shown in the figure). Further, when the limiting strip 211 of the connection block 210 cooperates with the first limiting groove 102, the connection block 210 can only move in the vertical direction in the back frame 100. For this, refer to Figures 1 to 3, the second opening 1011 is located at the upper end of the back frame 100, and the connecting block 210 needs to overcome the effect of gravity to improve the safety of operation. For example, a person manually pulls the back plate 200 to remove the connecting block 210 from the upper end of the back frame 100. Furthermore, a decorative cover 400 is mounted on the upper end of the back frame 100, and the decorative cover 400 is used to close the second opening 1011. Furthermore, the decorative cover 400 can be easily disassembled and assembled. The decorative cover 400 is disassembled during assembly, and the second opening 1011 is closed after assembly to avoid internal dust accumulation, and the overall aesthetics is better.

[0048] The seat according to the embodiment of the utility model includes a liftable chair back structure that is easy to disassemble and assemble according to the embodiment of the utility model. By adopting a liftable chair back structure that is easy to disassemble and assemble according to the embodiment of the utility model, the operating driving component 310 can drive the plug-in block 320 to insert and disengage from the gear slot 2102, so that the back panel 200 can be lifted or lowered by hand, and the back panel 200 can be adjusted up or down at will, and the back panel 200 can be kept at the adjusted height for use, and the flexibility of adjustment and use is high; and after the driving component 310 drives the plug-in block 320 to disengage from the gear slot 2102, the back panel 200 can be controlled by hand to disengage from the plug-in block 320 through the first opening 21011, and the overall structure is simple and easy to disassemble and assemble, which can reduce the packaging cost and enable users to assemble it by themselves conveniently.

[0049] Other structures and operations of the seat according to the embodiment of the utility model are known to those skilled in the art and will not be described in detail here.

[0050] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A liftable chair back structure that is easy to assemble and disassemble, characterized in that: include: A back frame adapted to be connected to a chair seat; A back plate is slidably arranged on the back frame in a vertical direction, the back plate is provided with a disassembly slot and a shift slot that are interconnected, the disassembly slot has a first opening, there are a plurality of the shift slots, and the plurality of the shift slots are arranged at intervals in the vertical direction; An adjustment component is installed on the back frame, and the adjustment component includes a driving component and a plug-in block. The driving component is connected to and drives the plug-in block to move along a first direction to insert into at least one of the gear slots; the driving component is connected to and drives the plug-in block to move away from the first direction to disengage from the gear slot; the plug-in block is slidably matched with the disassembly and assembly slot, and is suitable for being separated from the back panel through the first opening.

2. The liftable chair back structure that is easy to assemble and disassemble according to claim 1, characterized in that: The disassembly and assembly slot extends in a vertical direction, and the shift slot is arranged on a side wall of the disassembly and assembly slot.

3. The liftable chair back structure that is easy to assemble and disassemble according to claim 2, characterized in that: The first opening is located at the lower side of the disassembly slot.

4. The liftable chair back structure that is easy to assemble and disassemble according to any one of claims 1 to 3, characterized in that: A connecting block is fixedly installed on the outer side of the back plate, and the disassembly and assembly slot and the shift slot are both arranged on the connecting block.

5. The liftable chair back structure that is easy to assemble and disassemble according to claim 4, characterized in that: The back frame is provided with a receiving groove, and the connecting block is slidably arranged in the receiving groove.

6. The liftable chair back structure that is easy to assemble and disassemble according to claim 1, characterized in that: The driving component includes a driving handle, the plug-in block is slidably arranged on the back frame along the horizontal direction, the driving handle moves along the vertical direction, and the driving handle and the plug-in block are matched with an oblique slot to drive the plug-in block out of the gear slot.

7. The liftable chair back structure that is easy to assemble and disassemble according to claim 6, characterized in that: The transmission cooperation of the inclined slot includes a transmission slot and a driving block, the driving block is fixedly connected to the driving handle, the transmission slot is arranged on the plug-in block, the length direction of the transmission slot is inclined with the vertical direction, and the driving block is slidably arranged in the transmission slot and abuts against the slot wall of the transmission slot.

8. The liftable chair back structure that is easy to assemble and disassemble according to claim 6, characterized in that: The driving component also includes a reset spring, one end of which presses against the back frame, and the other end presses against the driving handle for reset, so as to drive the plug-in block to be inserted into the gear slot through the transmission cooperation of the inclined slot.

9. The liftable chair back structure that is easy to assemble and disassemble according to any one of claims 6 to 8, characterized in that: There are two groups of gear slots, which are arranged opposite to each other. There are two plug-in blocks, and plug-in parts are arranged on the opposite sides of the two plug-in blocks. The plug-in parts correspond to the gear slots one by one and are plugged in with the gear slots.

10. A seat, characterized in that: It comprises a liftable chair back structure that is easy to disassemble and assemble as described in any one of claims 1 to 9.

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