Detachable seat

Abstract

The utility model provides a detachable chair, which comprises a chair back assembly and a chair seat module, the chair back assembly comprises a back support piece and a waist support piece which are connected through a rotating connecting rod, and the chair seat module is provided with a first mounting position used for being connected with the back support piece and a second mounting position used for being connected with the waist support piece; the chair seat has a packaging state and a use state, and in the packaging state, the chair back assembly and the chair seat module are separated from each other, so that packaging is facilitated, the space utilization rate during packaging and transportation is increased, and the packaging and transportation cost is saved; in the using state, the chair back assembly is connected with the chair seat module, the back supporting piece is in linkage with the waist supporting piece, and the waist supporting piece is driven by the back supporting piece to rotate relative to the chair seat module and also rotate relative to the back supporting piece, so that the supporting faces of the back supporting piece and the waist supporting piece to the human body are not limited by the back supporting piece and the waist supporting piece. The supporting surface can change along with the waist and back curves of the human body in different postures, so that a more fit supporting experience is provided for a user, and the comfort of the seat is improved.

Description

Technical Field

[0001] The utility model relates to the field of furniture, in particular to a detachable seat. Background Art

[0002] There are many classifications of existing traditional seats. Many manufacturers focus on the field of office chairs. Aiming at the goals of ergonomics and improving comfort, the functions of office chairs are becoming more and more complete. Such as seat adjustment, armrest adjustment, headrest adjustment, and backrest adjustment, etc., are all to enable users to have a sitting posture suitable for themselves and obtain a comfortable sitting experience.

[0003] In the existing seats with separated waistrests, the waistrests are basically installed on the backrests. The rotation of the backrest drives the waistrest to rotate synchronously. Although it does not increase the cost in packaging and transportation, the comfort is poor. The waistrest cannot fit well with the human waist in the normal sitting and lying positions; therefore, the seats with linked backrests and waistrests came into being. The rotation of the backrest can drive the waistrest to rotate relative to the seat and the backrest, and the waistrest can fit the human waist in both the normal sitting and lying positions, providing excellent comfort for users; however, due to its relatively complex structure, it is generally packaged as a whole chair when shipped, which will waste too much space in packaging and transportation and increase the cost of packaging and transportation. Summary of the Invention

[0004] In order to solve the above technical problems, the utility model provides a detachable seat, which includes a backrest assembly and a seat module. The backrest assembly includes a back support and a waist support connected by a rotating link. The seat module is provided with a first installation position for connecting with the back support and a second installation position for connecting with the waist support; the seat has a packaging state and a use state. In the packaging state, the backrest assembly and the seat module are separated from each other to facilitate packaging, improve the space utilization rate during packaging and transportation, and save the packaging and transportation costs; in the use state, the backrest assembly and the seat module are connected, and the back support and the waist support are linked. The waist support rotates relative to the seat module and relative to the back support under the drive of the back support, so that the supporting surfaces of the back support and the waist support for the human body can change along with the waist and back curves of the human body in different postures, thereby giving the user a more fitting support experience and increasing the comfort of the seat.

[0005] The technical solution of the utility model is realized as follows:

[0006] A detachable seat, comprising a backrest assembly and a seat module. The backrest assembly includes a back support member and a lumbar support member. A rotating link is provided between the back support member and the lumbar support member. The back support member and the lumbar support member are both rotatably connected to the rotating link. The lumbar support member is rotatably connected to the back support member through the rotating link. The back support member is configured to support the human back, and the lumbar support member is configured to support the human waist; the seat module is configured to support the human buttocks. The seat module is provided with a first mounting position and a second mounting position. A support link is also rotatably provided on the lumbar support member; the detachable seat has a packaging state and a use state; in the packaging state, both the first mounting position and the second mounting position are in a vacant state so that the backrest assembly and the seat module are separated from each other; in the use state, the back support member is connected to the seat module at the first mounting position and the back support member is rotatably arranged on the seat module, and the support link is connected to the seat module at the second mounting position.

[0007] In this solution, during transportation, the detachable seat is in the packaging state, and the two modules of the seat, the backrest assembly and the seat module, are disassembled from each other, so as to improve the space utilization rate during packaging and transportation and save the packaging and transportation costs; during assembly, since the lumbar support member and the back support member are connected, only the back support member needs to be connected to the seat module and the support link needs to be connected to the seat module, and the assembly operation is convenient and consumers can easily complete it.

[0008] In the use state, the back support member and the lumbar support member are linked. When the back support member rotates backward relative to the seat module, the rotating link will drive the lumbar support member to rotate on the support link. The lumbar support member rotates both relative to the seat module and relative to the back support member, so that the supporting surface of the back support member and the lumbar support member for the human body can change along with the lumbar and back curves of the human body in different postures, thereby giving the user a more fitting support experience and increasing the comfort of the seat.

[0009] Preferably, the back support member includes a back frame and a back bracket. The back frame is installed on the back bracket, and the rotating link is rotatably connected to the back bracket; in the use state, the back bracket is connected to the seat module at the first mounting position.

[0010] Preferably, the seat module includes a chassis and a seat part. The chassis includes a back connecting member located at the first mounting position, and the back connecting member is fixedly connected to the back bracket.

[0011] Preferably, the seat module includes a seat part and a chassis. The first mounting position is located on the chassis, and the second mounting position is located on the seat part. The first mounting position is used to connect the back bracket. In conventional designs, it is always the chassis that is connected to the back bracket; the second mounting position is used to connect the support link, and there is no such mounting position in a conventional chassis. Considering that it is more troublesome to modify the chassis, it is more reasonable to set the second mounting position on the seat part, and the modification cost is also lower.

[0012] Preferably, a mounting base is provided at the second mounting position of the seat portion. The mounting base is fixedly arranged at the rear end of the seat portion, and the support connecting rod is connected to the mounting base. The mounting base is fixedly installed at the rear end of the seat portion by screws and has been installed before leaving the factory. Consumers do not need to install it themselves. They only need to install the support connecting rod to the mounting base.

[0013] Preferably, the support connecting rod includes an insertion interface that opens downward, and the mounting base is provided with a protruding insertion portion upward. In the use state, the insertion portion is inserted into the support connecting rod through the insertion interface. The installation can be completed by simply inserting the support connecting rod into the mounting base, and the operation is convenient and simple.

[0014] Preferably, an elastic buckle is further provided on the insertion portion, and a buckle hole is formed on the support connecting rod. After the insertion portion is inserted into the support connecting rod, the elastic buckle is snapped into the buckle hole to lock the support connecting rod and the seat portion. The mounting base and the support connecting rod are locked by the elastic buckle and the buckle hole, which is convenient for disassembly and reassembly again; after the installation is completed, the connection stability between the support connecting rod and the seat module is ensured.

[0015] Preferably, the support connecting rod is U-shaped. The support connecting rod includes two upwardly extending arms, and the upper ends of the two arms are rotatably connected to the lumbar support member. The two arms of the support connecting rod are rotatably connected to the lumbar support member, which can not only maintain the connection stability between the support connecting rod and the lumbar support member and prevent it from falling off during transportation, but also ensure the stability when the lumbar support member rotates.

[0016] The design concept, idea and beneficial effects of the present utility model adopting the above technical solutions are as follows:

[0017] In this solution, during transportation, the detachable seat is in a packaged state, and the two modules of the seat, the backrest assembly and the seat module are disassembled from each other, so as to improve the space utilization rate during packaging and transportation and save the packaging and transportation costs; during assembly, since the lumbar support member and the back support member are connected, only the back support member needs to be connected to the seat module and the support connecting rod needs to be connected to the seat module. The assembly operation is convenient and consumers can easily complete it.

[0018] In the use state, the back support member and the lumbar support member are linked. When the back support member rotates backward relative to the seat module, the rotating connecting rod will drive the lumbar support member to rotate on the support connecting rod. The lumbar support member rotates relative to both the seat module and the back support member, so that the supporting surface of the back support member and the lumbar support member for the human body can change along with the lumbar and back curves of the human body in different postures, thereby giving the user a more fitting support experience and increasing the comfort of the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a side view of the seat in the packaged state in the embodiment of the present utility model;

[0020] Figure 2This is a schematic three-dimensional structure diagram of the backrest assembly in an embodiment of the present utility model;

[0021] Figure 3 This is a schematic three-dimensional structure diagram of the seat module in an embodiment of the present utility model;

[0022] Figure 4 This is a schematic three-dimensional structure diagram of the seat in the use state in an embodiment of the present utility model Figure 1 ;

[0023] Figure 5 This is a schematic three-dimensional structure diagram of the seat in the use state in an embodiment of the present utility model Figure 2 ;

[0024] Figure 6 This is a side view of the seat in the use state in an embodiment of the present utility model;

[0025] Figure 7 This is a schematic three-dimensional structure diagram of the support link in an embodiment of the present utility model;

[0026] Figure 8 This is a schematic three-dimensional structure diagram of the mounting base in an embodiment of the present utility model;

[0027] Figure 9 This is a schematic three-dimensional structure diagram of the installation of the support link and the mounting base in an embodiment of the present utility model.

[0028] Each reference numeral is: seat module 1; back support member 2; chassis 3; lumbar support member 4; rotating link 5; support link 6; rocker 7; seat portion 8; back bracket 9; back frame 10; arm 11; insertion portion 12; insertion opening 13; elastic buckle 14; buckle hole 15; mounting base 16. Detailed implementation manners

[0029] In order to be able to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0030] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.

[0031] In the description of the present utility model, the terms "first", "second", "third", etc. are only used for the purpose of description and cannot be understood as indicating or implying relative importance.

[0032] The specific implementation manners of the present utility model are as follows:

[0033] As shown Figures 1-6 in the figure, the utility model provides a detachable seat, which includes a backrest assembly and a seat module 1. The backrest assembly includes a back support member 2 and a lumbar support member 4. The lumbar support member 4 is rotatably connected to the back support member 2 through a rotating link 5. The back support member 2 is configured to support the human back, and the lumbar support member 4 is configured to support the human waist; the seat module 1 is configured to support the human buttocks. The seat module 1 is provided with a first installation position and a second installation position. The lumbar support member 4 is also rotatably provided with a support link 6; the detachable seat has a packaging state and a use state; in the packaging state, the first installation position and the second installation position are in a vacant state so that the backrest assembly and the seat module 1 are separated from each other; in the use state, the back support member 2 is connected to the seat module 1 at the first installation position and the back support member 2 is rotatably provided on the seat module 1, and the support link 6 is connected to the seat module 1 at the second installation position.

[0034] In this solution, during transportation, the detachable seat is in the packaging state, and the two modules of the seat, the backrest assembly and the seat module 1, are disassembled from each other, so as to improve the space utilization rate during packaging and transportation and save the packaging and transportation costs; during assembly, since the lumbar support member 4 and the back support member 2 are connected, only the back support member 2 needs to be connected to the seat module 1 and the support link 6 needs to be connected to the seat module 1, and the assembly operation is convenient and consumers can easily complete it.

[0035] In the use state, the back support member 2 and the lumbar support member 4 are linked. When the back support member 2 rotates backward relative to the seat module 1, the rotating link 5 will drive the lumbar support member 4 to rotate on the support link 6. The lumbar support member 4 rotates relative to the seat module 1 and also relative to the back support member 2, so that the supporting surfaces of the back support member 2 and the lumbar support member 4 for the human body can change along with the lumbar and back curves of the human body in different postures, thereby giving the user a more fitting support experience and increasing the comfort of the seat.

[0036] Specifically, as shown Figure 1 in 3 the figure, the seat module 1 includes a seat part 8 and a chassis 3. The first installation position is located on the chassis 3, and the second installation position is located on the seat part 8; the first installation position is used to connect the back bracket 9. In conventional designs, it is always the chassis 3 that is connected to the back bracket 9; the second installation position is used to connect the support link 6. There is no such installation position in the conventional chassis 3. Considering that it is more troublesome to modify the chassis 3, it is more reasonable to set the second installation position on the seat part 8, and the modification cost is also lower.

[0037] The chassis 3 includes a back connecting member located at the first mounting position, and the back connecting member is a rocker 7; the back support member 2 includes a back bracket 9 and a back frame 10 connected together. The rocker 7 located at the first mounting position is fixedly connected to the back bracket 9 in the back support member 2, and the rocker 7 is rotatably arranged on the chassis 3, so that the back support member 2 can rotate relative to the chassis 3; the seat portion 8 is provided with a mounting seat 16 at the second mounting position. The mounting seat 16 is fixedly arranged at the rear end of the seat portion 8, and the support link 6 is connected to the mounting seat 16; the mounting seat 16 is fixedly installed at the rear end of the seat portion 8 by screws and has been installed before leaving the factory. Consumers do not need to install it by themselves. They only need to install the support link 6 and the mounting seat 16.

[0038] As Figures 7-9 shown, the support link 6 is U-shaped. The support link 6 includes two arms 11 extending upward and forward and an insertion opening 13 opening downward. The mounting seat 16 is provided with a plug-in portion 12 protruding upward. In the use state, the plug-in portion 12 is inserted into the support link 6 through the insertion opening 13; the upper ends of the two arms 11 are rotatably connected to the lumbar support member 4; the support link 6 and the chassis 3 are connected by inserting the plug-in portion 12 into the insertion opening 13, and the operation is convenient and simple; the two arms 11 of the support link 6 are rotatably connected to the lumbar support member 4, which can not only maintain the connection stability between the support link 6 and the lumbar support member 4 and prevent it from falling off during transportation, but also ensure the stability when the lumbar support member 4 rotates.

[0039] Furthermore, the plug-in portion 12 is also provided with an elastic buckle 14, and the support link 6 is provided with a buckle hole 15. After the plug-in portion 12 is inserted into the support link 6, the elastic buckle 14 is snapped into the buckle hole 15 to lock the support link 6 and the seat portion 8. After the plug-in portion 12 and the support link 6 are inserted, the support link 6 and the seat portion 8 are locked by the elastic buckle 14 and the buckle hole 15 to maintain the connection stability between the support link 6 and the seat portion 8; after the support link 6 is installed on the seat portion 8, the rotation point of the lumbar support member 4 relative to the seat module 1 will be fixed. The lumbar support member 4 always rotates around the rotation connection point on the support link 6 and only makes a rotational movement relative to the whole of the support link 6 and the seat module 1.

[0040] The back frame 10 is installed on the back support 9. The back support 9 is a hollow frame structure. The rotating link 5 is rotatably connected to the lower part of the back support 9, and the back frame 10 is installed on the upper part of the back support 9. After the rotating link 5 is rotatably connected to the lumbar support 4 and the back support 9 respectively, the linkage between the lumbar support 4 and the back frame 10 is realized. When the back support 9 and the back frame 10 rotate backward relative to the chassis 3, the rotating link 5 drives the upper end of the lumbar support 4 to rotate backward. At this time, the back frame 10 rotates backward and moves backward and downward relative to the chassis 3, while the lumbar support 4 only rotates relative to the seat module 1. Therefore, the lumbar support 4 has a forward and upward displacement relative to the back frame 10, so as to support the human waist more reasonably and comfortably when lying down, meeting ergonomics.

Claims

1. A detachable seat, characterized in that: The invention comprises a chair back assembly and a chair seat module, wherein the chair back assembly comprises a back support and a lumbar support, a rotating link is provided between the back support and the lumbar support, the back support and the lumbar support are both rotatably connected with the rotating link, the lumbar support and the back support are rotatably connected with each other through the rotating link, the back support is configured to support the back of a human body, and the lumbar support is configured to support the waist of a human body; the chair seat module is configured to support the buttocks of a human body, a first mounting position and a second mounting position are provided on the chair seat module, and a supporting link is also rotatably provided on the lumbar support; the detachable seat has a packaging state and a use state; in the packaging state, the first mounting position and the second mounting position are both in an empty state to separate the chair back assembly and the chair seat module from each other; in the use state, the back support is connected to the chair seat module at the first mounting position and the back support is rotatably arranged on the chair seat module, and the supporting link is connected to the chair seat module at the second mounting position.

2. The detachable seat according to claim 1, characterized in that: The back support comprises a back frame and a back bracket, the back frame is mounted on the back bracket, and the rotating connecting rod is rotatably connected to the back bracket; in the use state, the back bracket is connected to the seat module at the first mounting position.

3. The detachable seat according to claim 2, characterized in that: The seat module comprises a chassis and a seat part. The chassis comprises a back connecting piece located at a first installation position. The back connecting piece is fixedly connected to a back bracket.

4. The detachable seat according to claim 1, characterized in that: The seat module comprises a seat part and a chassis, the first installation position is located on the chassis, and the second installation position is located on the seat part.

5. The detachable seat according to claim 4, characterized in that: The seat part is provided with a mounting seat at the second mounting position. The mounting seat is fixedly arranged at the rear end portion of the seat part, and the supporting connecting rod is connected with the mounting seat.

6. The detachable seat according to claim 5, characterized in that: The supporting connecting rod comprises an inserting port which is opened downwards, and the mounting seat is provided with an inserting portion which protrudes upwards. In a state of use, the inserting portion is inserted into the supporting connecting rod through the inserting port.

7. The detachable seat according to claim 6, characterized in that: An elastic buckle is also arranged on the plug-in part, and a buckle hole is opened on the supporting connecting rod. After the plug-in part is inserted into the supporting connecting rod, the elastic buckle is inserted into the buckle hole and locks the supporting connecting rod and the seat.

8. The detachable seat according to claim 7, characterized in that: The supporting link is U-shaped and comprises two supporting arms extending upwards, and the upper ends of the two supporting arms are rotatably connected to the waist supporting member.

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