Seat frame and seat unit

Abstract

The invention discloses a seat frame and a seat unit. The seat frame comprises a movable seat frame, the movable seat frame comprises a first side frame, a linkage mechanism and a handrail piece, and the first side frame comprises a first longitudinal beam and a main supporting piece connected to the lower end of the first longitudinal beam; the first longitudinal beam extends in the front-back direction, and the main supporting piece is used for being supported on the ground. The linkage mechanism is arranged on the side, facing the linkage mechanism, of the first longitudinal beam and can be switched between the sitting posture position and the lying posture position. The armrest piece is fixedly connected to the side, away from the linkage mechanism, of the first seat frame. According to the seat frame, the main supporting piece of the first side frame is supported on the ground, the first longitudinal beam is connected with the main supporting piece, the first side frame is driven to provide a stable supporting effect on the linkage mechanism and the armrest piece, and therefore the design that the armrest piece is supported on the ground in a traditional product is replaced, and the whole seat frame is driven to be more stable; the shaking phenomenon is effectively reduced, and the use experience of consumers is further optimized.

Description

Technical Field

[0001] The present application relates to the technical field of furniture, and in particular to a seat frame and a seat unit. Background Art

[0002] As people's quality of life continues to improve, the comfort requirements for sofas and seats are also increasing. This has led to the emergence of many functional movable seat products on the market, including sofas or seats with multi-position transformation functions, which are designed to meet the comfort requirements in different scenarios. However, in the existing technical implementation, these movable seats generally rely on complex linkage mechanisms to achieve smooth transitions between various postures such as sitting position, TV position, and lying position. At the same time, in order to take into account both aesthetics and practicality, designers tend to directly connect the linkage mechanism to the armrest and directly use the armrest as the only ground support. This design cleverly uses the armrest structure as a key component for connection and support, reduces the exposure of additional components, and enhances the overall visual beauty. However, such a design also leads to a significant defect: the armrest, as the only supporting member, directly bears the weight and contacts the ground. Its structural strength and stability are often difficult to meet the complex mechanical requirements generated when the seat changes posture. Especially when it is frequently adjusted or carries a large weight, the overall stability of the seat is significantly reduced and it is prone to shaking. This not only weakens the practicality of the seat, but also invisibly reduces consumers' sense of safety and comfort, seriously affecting consumers' user experience. Summary of the invention

[0003] In order to overcome at least one of the defects described in the above-mentioned prior art, the present application provides a seat frame, which is supported on the ground by a main support member of the first side frame to provide a stable support for the linkage mechanism and the armrest, thereby making the overall seat frame more stable and effectively reducing the occurrence of shaking.

[0004] A chair frame according to an embodiment of the present application includes a movable seat frame, which includes a first side frame, a linkage mechanism and an armrest member, the first side frame includes a first longitudinal beam and a main support member connected to the lower end of the first longitudinal beam; the first longitudinal beam is extended in the front-to-back direction, and the main support member is used to support on the ground; the linkage mechanism is arranged on a side of the first longitudinal beam facing the linkage mechanism, and can be transformed between a sitting position and a lying position; the armrest member is fixedly connected to the side of the first seat frame away from the linkage mechanism.

[0005] In the present seat frame, the main support member of the first side frame is supported on the ground, and the first longitudinal beam of the first side frame is fixedly connected to the main support member, driving the first side frame to provide stable support for the linkage mechanism and the armrest member assembled on the first longitudinal beam, thereby replacing the design of supporting the armrest member on the ground in traditional products, thereby driving the overall seat frame to be more stable, effectively reducing the occurrence of shaking, and further optimizing the consumer experience.

[0006] According to some embodiments of the present application, the first longitudinal beam is connected to at least one hanging ear piece, and the armrest piece is fixedly connected to the hanging ear piece.

[0007] According to some embodiments of the present application, a plurality of supporting legs for supporting on the ground are connected to the lower end of the armrest member, and the supporting legs are arranged along the front-to-back direction.

[0008] According to some embodiments of the present application, the rear end of the first longitudinal beam is connected to a first auxiliary beam extending along the height direction, and the first auxiliary beam is fixedly connected to the rear end of the handrail member.

[0009] According to some embodiments of the present application, a fixed seat frame is further included, and a second side frame is provided on a side of the linkage mechanism facing the fixed seat frame, and the second side frame is fixedly connected to a side of the fixed seat frame facing the linkage mechanism.

[0010] According to some embodiments of the present application, a first connector is provided on the second side frame; a second connector is provided on the side of the fixed seat frame facing the adjacent linkage mechanism or the fixed seat frame, and the second connector can be matched and connected with the adjacent first connector or the second connector.

[0011] According to some embodiments of the present application, the linkage mechanism includes at least two mechanical stretching devices arranged in a transverse direction, and a third side frame is connected to one side of the mechanical stretching device facing the adjacent mechanical stretching devices, and the third side frame is used to fix the two adjacent mechanical stretching devices together.

[0012] According to some embodiments of the present application, an auxiliary support member is further included, and the auxiliary support member is arranged at the lower end of the second side frame and / or the third side frame.

[0013] According to some embodiments of the present application, a fixed support member is further included, and the fixed support member is arranged at the lower end of the fixed seat frame.

[0014] Based on the same inventive concept, the present application also proposes a seat unit, comprising the seat frame as described above.

[0015] In summary, the seat frame provided by the present application has the following technical effects:

[0016] The main support member of the first side frame is supported on the ground, and the first longitudinal beam of the first side frame is fixedly connected to the main support member, so that the first side frame provides stable support for the linkage mechanism and the armrest member assembled on the first longitudinal beam, thereby replacing the design of supporting the armrest member on the ground in traditional products, thereby making the overall seat frame more stable, effectively reducing the occurrence of shaking, and further optimizing the consumer experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a seat frame according to an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the structure of the movable seat frame of the embodiment of the present application;

[0019] Figure 3 This is a schematic structural diagram of a first side frame according to an embodiment of the present application;

[0020] Figure 4 It is another structural schematic diagram of the first side frame of the embodiment of the present application;

[0021] Figure 5 It is another structural schematic diagram of the movable seat frame of the embodiment of the present application;

[0022] Figure 6 It is a left side view of half of the mechanical stretching device of the embodiment of the present application;

[0023] Figure 7 A right side view of half of the mechanical stretching device according to an embodiment of the present application;

[0024] Figure 8 This is a schematic diagram of the structure of a fixed seat frame according to an embodiment of the present application;

[0025] Fig. 9 This is another structural schematic diagram of the fixed seat frame according to an embodiment of the present application.

[0026] The meanings of the reference numerals are as follows:

[0027] 100. movable seat frame; 110. first side frame; 111. first longitudinal beam; 112. main support member; 113. ear member; 114. first auxiliary beam; 115. connecting part; 120. linkage mechanism; 121. mechanical extension device; 122. half of mechanical extension device; 123. fixed plate; 124. fixed cross beam; 125. sexual electro-actuating device; 126. seat assembly; 127. backrest assembly; 128. leg assembly; 130. armrest member; 131. foot member; 140. second side frame; 141. first connector; 142. auxiliary support member; 143. second longitudinal beam; 144. second auxiliary beam; 200. fixed seat frame; 201. second connector; 202. fixed support member; 203. third longitudinal beam; 204. third auxiliary beam. DETAILED DESCRIPTION

[0028] For better understanding and implementation, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0029] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application 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 application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0031] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The present application discloses a seat frame, which is applied to a seat unit. The seat frame includes a movable seat frame 100, and the movable seat frame 100 includes a first side frame 110, a linkage mechanism 120 and an armrest 130. In some embodiments, the first side frame 110 includes a first longitudinal beam 111 and a main support member 112 connected to the lower end of the first longitudinal beam 111; the first longitudinal beam 111 is extended along the front-back direction, and the main support member 112 is used to support on the ground; the linkage mechanism 120 is arranged on the side of the first longitudinal beam 111 facing the linkage mechanism 120, and can be changed between a sitting position and a lying position; the armrest member 130 is fixedly connected to the side of the first seat frame away from the linkage mechanism 120. Preferably, the main support member 112 of the first side frame 110 is supported on the ground, and the first longitudinal beam 111 of the first side frame 110 is fixedly connected to the main support member 112, so that the first side frame 110 provides a stable support for the linkage mechanism 120 and the armrest 130 assembled on the first longitudinal beam 111, thereby replacing the design of supporting the armrest 130 on the ground in traditional products, thereby making the overall seat frame more stable, effectively reducing the occurrence of shaking, and further optimizing the consumer experience.

[0032] Optionally, the first longitudinal beam 111 and the main support member 112 are both made of strip-shaped square tubes, so that the first side frame 110 as a whole has a higher structural strength, so as to better provide support for the linkage mechanism 120 and the handrail member 130; Optionally, the first longitudinal beam 111 and the main support member 112 can be fixedly connected by welding, threaded connection, riveting, plug-in connection, etc.; Optionally, the lower end of the first longitudinal beam 111 is connected to a plurality of the main support members 112, see Figure 3 , Figure 4 and Figure 5 In this embodiment, two main support members 112 are connected to the lower end of the first longitudinal beam 111, and the two main support members 112 are arranged at the lower end of the first longitudinal beam 111 along the front-to-back direction, so that the main support members 112 can support the first longitudinal beam 111 more stably.

[0033] In some embodiments, the first longitudinal beam 111 is connected to at least one ear hanging piece 113, and the armrest 130 is fixedly connected to the ear hanging piece 113. Preferably, the armrest 130 is fixedly connected to the first longitudinal beam 111 through the ear hanging piece 113, so that the first longitudinal beam 111 provides a reliable supporting force to the armrest 130 through the ear hanging piece 113; optionally, the number of the ear hanging pieces 113 can be multiple, and the multiple ear hanging pieces 113 are arranged along the front and rear direction; see Figure 3 , Figure 4 and Figure 5In this embodiment, the two ear pieces 113 are arranged on the first longitudinal beam 111 along the front-to-back direction, wherein the ear pieces 113 are fixedly connected to the first longitudinal beam 111 by welding, threaded connection, riveting, plugging, etc., and the free ends of the ear pieces 113 extend in the transverse direction away from the linkage mechanism 120 to the bottom of the armrest piece 130, and the armrest piece 130 is fixedly connected to the armrest piece 130 by threaded connection, riveting, plugging, etc., so that the first longitudinal beam 111 supports and fixes the armrest piece 130 through the ear pieces 113, so as to achieve a stable connection between the armrest piece 130 and the first side frame 110.

[0034] Optionally, the armrest member 130 is made by injection molding, that is, the armrest member 130 is an independent component and can be directly assembled on the ear member 113 without complicated assembly, thereby effectively improving production efficiency. At the same time, the armrest member 130 made by injection molding has good physical properties and chemical stability, can provide the service life of the seat frame, and is easy to carry out post-processing such as spraying, electroplating, and printing to meet different aesthetic and functional requirements.

[0035] In some embodiments, the lower end of the armrest 130 may not be provided with the support member 131, so that the armrest 130 is directly supported and fixed by the first longitudinal beam 111 through the ear member 113; preferably, the lower end of the armrest 130 is connected with a plurality of support members 131 for supporting on the ground, and the support members 131 are arranged along the front-to-back direction. In this way, the support member 131 and the first side frame 110 jointly support the armrest 130, further improving the stability of the armrest 130; see Figure 1 , Figure 2 and Figure 3 In this embodiment, there are two support members 131, and the two support members 131 are respectively arranged at the front and rear ends of the armrest member 130; further, the distance between the two main support members 112 is smaller than the distance between the two support members 131, and the first side frame 110 is located between the armrest member 130 and the linkage mechanism 120. In this way, the main support member 112 can be effectively hidden, so that the seat unit made of the seat frame is more beautiful and meets consumers' pursuit of aesthetics.

[0036] In some embodiments, the rear end of the first longitudinal beam 111 is connected to a first auxiliary beam 114 extending in the height direction, and the first auxiliary beam 114 is fixedly connected to the rear end of the handrail 130. Preferably, the handrail 130 is fixedly connected by the first longitudinal beam 111 and the first auxiliary beam 114 to improve the reliability of the connection between the handrail 130 and the first side frame 110; further, see Figure 3 , Figure 4 and Figure 5 In this embodiment, the main support member 112 arranged at the front end of the first longitudinal beam 111 extends upward to form a connecting portion 115, and the connecting portion 115 is fixedly connected to the armrest member 130. In this way, the first auxiliary beam 114 and the connecting portion 115 are respectively fixedly connected to the armrest member 130 at the front and rear ends of the first longitudinal beam 111, and at the same time, the middle part of the first longitudinal beam 111 is fixedly connected to the armrest member 130 through the two ear parts 113. In this way, the first side frame 110 provides a sufficiently large supporting force to the armrest member 130, so that the armrest member 130 and the first side frame 110 form a stable whole, effectively reducing the shaking of the armrest member 130, and further optimizing the consumer's usage experience.

[0037] In some embodiments, the chair frame further includes a fixed seat frame 200, that is, the chair frame has both a movable seat frame 100 and a fixed seat frame 200, wherein the fixed seat frame 200 does not have the linkage mechanism 120, and preferably, the linkage mechanism 120 is provided with a second side frame 140 on the side facing the fixed seat frame 200, and the second side frame 140 is fixedly connected to the side of the fixed seat frame 200 facing the linkage mechanism 120. A double-seat chair unit is now used as an example for explanation, see Figure 1 The double-seat chair unit has a movable seat frame 100 and a fixed seat frame 200. Preferably, the first side frame 110 is arranged on the side of the linkage mechanism 120 away from the fixed seat frame 200, the armrest 130 is fixedly connected to the side of the first side frame 110 away from the linkage mechanism 120, and the second side frame 140 is arranged on the side of the linkage mechanism 120 facing the fixed seat frame 200. The second side frame 140 is fixedly connected to the fixed seat frame 200 by means of threaded connection, riveting, plug-in, etc. to achieve a stable connection between the movable seat frame 100 and the fixed seat frame 200, so that the movable seat frame 100 and the fixed seat frame 200 are connected to each other in parallel in the horizontal direction to form a whole together, so that it can be applied to a double-seat chair unit.

[0038] In some embodiments, at least one fixed seat frame 200 is provided in the seat frame. Optionally, the number of the fixed seat frames 200 can be adjusted accordingly as needed, so that the seat frame can be adjusted to a longer seat unit for three, four, five, etc. Preferably, a first connector 141 is provided on the second side frame 140; a second connector 201 is provided on one side of the fixed seat frame 200 facing the adjacent linkage mechanism 120 or the fixed seat frame 200, and the second connector 201 can be matched and connected with the adjacent first connector 141 or the second connector 201. A three-person chair unit is now used as an example for explanation. The three-person chair unit has a movable seat frame 100 (for the convenience of description, hereinafter referred to as movable frame A) and two fixed seat frames 200 (for the convenience of description, hereinafter referred to as fixed frame B and fixed frame C), wherein the movable frame A, fixed frame B and fixed frame C are arranged in a transverse direction, that is, the movable frame A and the fixed frame B are adjacent to each other, and the fixed frame B and the fixed frame C are adjacent to each other. The movable frame A located at the end of the arrangement has a linkage mechanism 120 that can independently switch between a sitting position and a lying position. The first side frame 110 is arranged on a side of the linkage mechanism 120 away from the fixed seat frame 200, the armrest member 130 is fixedly connected to a side of the first side frame 110 away from the linkage mechanism 120, and the second side frame 140 is arranged on a side of the linkage mechanism 120 facing the fixed frame B. The first connector 141 on the second side frame 140 is connected to the surface of the fixed frame B. The second connector 201 on the side of the movable frame A is cooperated and connected, and the fixed frame B and the fixed frame C respectively have their own second connectors 201 on the sides facing each other, and the two second connectors 201 are cooperated and connected to each other, so that the movable frame A, the fixed frame B and the fixed frame are connected to each other in parallel along the horizontal direction; further, the number of the fixed seat frames 200 can be increased or decreased according to the required length, thereby improving the expandability of the seat unit. To this end, it is only necessary to release the connection between the second connector 201 and the adjacent first connector 141 or the second connector 201 to remove the redundant fixed seat frame 200, or to arrange the fixed seat frame 200 to be added in sequence along the horizontal direction with the other fixed seat frames 200 and / or the movable seat frame 100, and drive the second connector 201 to connect with the adjacent first connector 141 or the second connector 201 to fix the fixed seat frame 200.

[0039] For further information, see Figure 2 The second side frame 140 includes a second longitudinal beam 143 extending in the front-rear direction and a second auxiliary beam 144 extending in the height direction. The second auxiliary beam 144 is arranged at the rear end of the second longitudinal beam 143. Further, the number of the first connector 141 is multiple and distributed on the second longitudinal beam 143 and the second auxiliary beam 144. Figure 2The second longitudinal beam 143 and the second auxiliary beam 144 each have a first connector 141. Accordingly, the fixed seat frame 200 includes a third longitudinal beam 203 extending in the front-rear direction and a third auxiliary beam 204 extending in the height direction. The third auxiliary beam 204 is arranged at the rear end of the third longitudinal beam 203. Figure 2 The third longitudinal beam 203 and the third auxiliary beam 204 each have a second connector 201, so that the first connector 141 on the second longitudinal beam 143 is fixedly connected to the second connector 201 on the third longitudinal beam 203, and the first connector 141 on the second auxiliary beam 144 is fixedly connected to the second connector 201 on the third auxiliary beam 204, so as to achieve a stable connection between the movable seat frame 100 and the fixed seat frame 200.

[0040] See also Figure 8 and Fig. 9 The fixed seat frame 200 includes two sets of third longitudinal beams 203 and third auxiliary beams 204. The front and rear ends of the two third longitudinal beams 203 are fixedly connected by connecting rods. Optionally, a frame structure for forming a seat or supporting a seat cushion is also provided above the third longitudinal beams 203. The innovation of the present application does not lie in the specific formation method of the frame structure, which will not be listed one by one here.

[0041] In some embodiments, the seat frame may be composed only of the movable seat frame 100, and the movable seat frame 100 can be applied to a single-seat seat unit, a double-seat seat unit or a multi-seat seat unit; optionally, when the movable seat frame 100 is applied to a double-seat seat unit or a multi-seat seat unit, the linkage mechanism 120 includes at least two mechanical extension devices 121 arranged in the transverse direction, and a third side frame is connected to the side of the mechanical extension device 121 facing the adjacent mechanical extension devices 121, and the third side frame is used to fix the two adjacent mechanical extension devices 121. A three-person chair unit is now used as an example for explanation. The three-person chair unit has three mechanical extension devices 121. For the convenience of description, the three mechanical extension devices 121 are respectively defined as device A, device B and device C. Device A, device B and device C are arranged in a transverse direction, and each of the mechanical extension devices 121 can independently transform between a sitting position and a lying position, wherein device A and device C are located at both ends of the arrangement, so the side of device A and C facing away from device B is provided with the first side frame 110, and the side of the first side frame 110 facing away from the mechanical extension device 121 is fixedly connected with the armrest member 130, and the mutually adjacent devices A and B respectively have respective third side frames on their mutually facing sides, and correspondingly, the mutually adjacent devices C and B also have respective third side frames on their mutually facing sides, respectively, with the help of the mutual connection of the four third side frames, so that devices A, device B and device C are connected to each other in parallel in the transverse direction, and the two mutually adjacent third side frames can be realized by riveting, threading, plug-in, etc. This modular construction method can increase or decrease the number of mechanical extension devices 121, that is, the number of seats, according to the required length, thereby improving the expandability of the seat unit. That is, it can be adjusted to a longer seat unit such as a double seat, a four-person seat, a five-person seat, etc. according to the needs; when the seat unit is configured as a single-person seat unit, the seat unit includes only one set of mechanical extension devices 121, a pair of the first side frames 110 located on the left and right sides of the mechanical extension device 121, and an armrest member 130 directly fixedly connected to the first side frame 110.

[0042] Further, the chair frame is composed of the movable seat frame 100 and the fixed seat frame 200, wherein the linkage mechanism 120 includes at least one mechanical extension device 121 arranged in a transverse direction, the mechanical extension device 121 and the fixed seat frame 200 are arranged in a transverse direction, and the mechanical extension device 121 located at the end of the arrangement has the first side frame 110, the first side frame 110 is arranged on the outside of the mechanical extension device 121, and the first side frame 110 is fixedly connected to the armrest 130 on the side away from the mechanical extension device 121. If another mechanical extension device 121 is adjacent to the mechanical extension device 121, the two adjacent mechanical extension devices 121 respectively have their own third side frames on the sides facing each other, and by means of The mutual connection of the two third side frames enables the two adjacent mechanical extension devices 121 to be connected in parallel with each other in the horizontal direction; if the fixed seat frame 200 and the mechanical extension device 121 are adjacent to each other, the second side frame 140 is provided on the side of the mechanical extension device 121 facing the fixed seat frame 200, and the first connector 141 on the second side frame 140 is matched and connected with the second connector 201 on the side of the fixed seat frame 200 facing the mechanical extension device 121, so that the adjacent mechanical extension devices 121 and the fixed seat frame 200 are connected in parallel with each other in the horizontal direction; further, the number of the fixed seat frame 200 and / or the mechanical extension device 121 can be increased or decreased according to the required length, thereby improving the scalability of the seat unit.

[0043] Furthermore, the third side frame may be provided with the first connector 141, through which the two adjacent third side frames are fixedly connected, that is, the mechanical stretching device 121 can also be fixedly connected to the fixed seat frame 200 through the third side frame; preferably, the second side frame 140 and the third side frame adopt the same structure to optimize the structure of the movable seat frame 100 and improve the versatility of components.

[0044] In some embodiments, a fixed support member 202 is further included, and the fixed support member 202 is disposed at the lower end of the fixed seat frame 200. Figure 1 , Figure 8 and Fig. 9The seat frame has a movable seat frame 100 and a fixed seat frame 200. The fixed seat frame 200 is supported on the ground by the fixed support member 202, so that the fixed seat frame 200 can provide a stable support to the side of the linkage mechanism 120 away from the first side frame 110 through the second side frame 140. At the same time, the linkage mechanism 120 provides a stable support to the side facing the first side frame 110, thereby making the overall seat frame more stable, effectively reducing shaking, and optimizing the consumer's use experience.

[0045] In some embodiments, an auxiliary support member 142 is further included, and the auxiliary support member 142 is disposed at the lower end of the second side frame 140 and / or the third side frame. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The side of the linkage mechanism 120 facing the second side frame 140 is supported on the ground by the auxiliary support member 142 at the lower end of the second side frame 140, so that the side of the linkage mechanism 120 away from the first side frame 110 can also obtain stable support, thereby improving the overall stability of the seat frame and effectively reducing shaking. Similarly, the side of the mechanical stretching device 121 facing the third side frame is supported on the ground by the auxiliary support member 142 at the lower end of the third side frame. In particular, when the seat frame is composed of only the movable seat frame 100, both sides of the mechanical stretching device 121 located in the middle of the arrangement have the third side frame. In this way, the auxiliary support member 142 at the lower end of the third side frame is supported on the ground, driving the third side frame to provide stable support to the mechanical stretching device 121, making the overall seat frame more stable and effectively reducing shaking.

[0046] In some embodiments, a seating unit includes the seat frame described above. Figure 1 The seat frame of the seat unit is composed of the movable seat frame 100 and the fixed seat frame 200. The movable seat frame 100 has the linkage mechanism 120. The linkage mechanism 120 has a mechanical extension device 121 that can be changed between at least a sitting position and a lying position. Figure 4The mechanical stretching device 121 includes mechanical stretching device halves 122 that are mirror-symmetrically arranged on the left and right sides. Each mechanical stretching device half 122 has a fixing plate 123 extending longitudinally along the front-to-back direction of the movable seat. Each mechanical stretching device half 122 is assembled on the side of the first longitudinal beam 111 facing the mechanical stretching device 121 by means of its respective fixing plate 123, or each mechanical stretching device half 122 is assembled on the side of the second side frame 140 or the third side frame facing the mechanical stretching device 121 by means of its respective fixing plate 123. Each fixing plate 123 is respectively attached to a common fixed crossbeam 124 by means of a connecting rod, and the fixed crossbeam 124 is located on the backrest side, that is, the rear end of the seat frame; further, the main support member 112 and the auxiliary support member 142 are also respectively attached to the fixed crossbeam 124 by means of corresponding connecting rods. Preferably, refer to Figure 6 and Figure 7 The mechanical extension device 121 also includes a linear electric actuator 125, a seat assembly 126, a backrest assembly 127 pivotally connected to the rear end of the seat assembly 126, and a leg assembly 128 pivotally connected to the front end of the seat assembly 126. When changing between the sitting position and the lying position, the linear electric actuator 125 can drive the leg assembly 128 to extend forward, while driving the seat assembly 126 to move forward, and the rearmost end of the backrest assembly 127 has a forward moving component and no backward moving component, so that the seat unit is suitable for a variety of seat units such as "zero gravity" and "zero wall". The innovation of this application does not lie in the specific structure of the mechanical extension device 121, which will not be listed here one by one.

[0047] The technical means disclosed in the present application are not limited to the technical means disclosed in the above-mentioned implementation methods, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications are also regarded as the protection scope of this application.

Claims

1. A chair frame, comprising a movable seat frame (100), wherein the movable seat frame (100) comprises a first side frame (110), a linkage mechanism (120) and an armrest member (130), characterized in that: The first side frame (110) comprises a first longitudinal beam (111) and a main support member (112) connected to the lower end of the first longitudinal beam (111); The first longitudinal beam (111) is extended in the front-rear direction, and the main support member (112) is used to be supported on the ground; The linkage mechanism (120) is arranged on a side of the first longitudinal beam (111) facing the linkage mechanism (120), and is capable of switching between a sitting position and a lying position; The armrest member (130) is fixedly connected to a side of the first seat frame that is away from the linkage mechanism (120).

2. The seat frame according to claim 1, characterized in that: The first longitudinal beam (111) is connected to at least one hanging ear piece (113), and the armrest piece (130) is fixedly connected to the hanging ear piece (113).

3. The seat frame according to claim 1, characterized in that: The lower end of the armrest member (130) is connected to a plurality of supporting foot members (131) for supporting on the ground, and the supporting foot members (131) are arranged along the front-rear direction.

4. The seat frame according to claim 1, characterized in that: The rear end of the first longitudinal beam (111) is connected to a first auxiliary beam (114) extending in the height direction, and the first auxiliary beam (114) is fixedly connected to the rear end of the handrail member (130).

5. The seat frame according to claim 1, characterized in that: It also comprises a fixed seat frame (200), a second side frame (140) being arranged on the side of the linkage mechanism (120) facing the fixed seat frame (200), and the second side frame (140) being fixedly connected to the side of the fixed seat frame (200) facing the linkage mechanism (120).

6. The seat frame according to claim 5, characterized in that: The second side frame (140) is provided with a first connector (141); the fixed seat frame (200) is provided with a second connector (201) on a side facing the mutually adjacent linkage mechanism (120) or the fixed seat frame (200), and the second connector (201) can be matched and connected with the mutually adjacent first connector (141) or second connector (201).

7. The seat frame according to claim 1 or 6, characterized in that: The linkage mechanism (120) comprises at least two mechanical stretching devices (121) arranged in a transverse direction, and a third side frame is connected to one side of the mechanical stretching device (121) facing the mutually adjacent mechanical stretching device (121), and the third side frame is used to fix the two mutually adjacent mechanical stretching devices (121) in connection.

8. The seat frame according to claim 7, characterized in that: It also includes an auxiliary support member (142), and the auxiliary support member (142) is arranged at the lower end of the second side frame (140) and / or the third side frame.

9. The seat frame according to claim 5, characterized in that: It also includes a fixed support member (202), wherein the fixed support member (202) is arranged at the lower end of the fixed seat frame (200).

10. A seat unit, characterized in that: Comprising a seat frame as claimed in any one of claims 1 to 9.

Images