Seat with lengthened seat frame

Abstract

The utility model relates to the technical field of furniture, in particular to a seat with a lengthened seat frame, which comprises a seat frame, a backrest component, a seat component, a footrest component, a linkage system and a linear actuator, and the backrest component, the seat component and the footrest component are all connected with the linear actuator. The linear actuator is used for controlling the backrest assembly, the seat assembly and the footrest assembly to be switched among the upright position, the stretching position and the inclined position; the seat assembly comprises a pair of seat plates which are oppositely arranged, the seat plates are arranged to be in a V shape or an L shape, and horizontal extending parts are arranged on the rear portions of the seat plates and used for increasing the occupied area of the seat plates. According to the utility model, the horizontal extension part is arranged at the rear part of the seat plate, so that the occupied area of the seat plate can be increased, and compared with the design mode of the existing seat, the mode can improve the comfort of tall and large groups.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, in particular to an extended seat frame chair. Background Art

[0002] Electric chairs, sofas, double seats and the like have become very popular in recent years. Consumers are now enjoying the luxury and convenience of such electric chairs, sofas, double seats and the like in offices, home offices, family activity rooms and other places where they choose to relax by watching TV, reading books or enjoying other types of passive activities. As is well known, such electric chairs, double seats and the like can reach various positions (for example: sitting position, lifting position, TV position, reclining position and zero gravity position). It is understandable that these pieces of furniture are suitable for various different consumers (for example: men, women, children), and these consumers may actually consist of or include different body shapes, proportions, sizes, heights, weights, etc. Therefore, people with a large body size may not be easily able to experience true comfort in conventional electric chairs, sofas, double seats and the like because the seats of such electric chairs, sofas, double seats and the like may not be large enough. Therefore, the structures of electric chairs, sofas, double seats and the like need to adapt to this type of consumer group. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is: in order to solve the technical problem that the seat of the existing chair occupies a small area and affects the comfort of people with a large body size, the utility model provides an extended seat frame chair, which can increase the floor area of the seat of the chair by improving the structure of the chair and improve the comfort of people with a large body size.

[0004] The technical solution adopted by the utility model to solve its technical problem is: an extended seat frame chair, comprising:

[0005] A chair frame, a backrest assembly, a seat assembly, a footrest assembly, a linkage system and a linear actuator, wherein the backrest assembly, the seat assembly and the footrest assembly are all connected to the linear actuator, and the linear actuator is used to control the backrest assembly, the seat assembly and the footrest assembly to switch between an upright position, an extended position and a reclining position;

[0006] Wherein: the seat assembly includes:

[0007] A pair of oppositely arranged seat plates, the seat plates are arranged in a V shape or an L shape, and a horizontally extending portion is arranged at the rear of the seat plates, and the horizontally extending portion is used to increase the floor area of the seat plates.

[0008] Thus, by arranging a horizontally extending portion at the rear of the seat plates, the floor area of the seat plates can be increased, and compared with the design method of the seats of the existing chairs, this method can improve the comfort of people with a large body size.

[0009] Furthermore, the linear actuator includes:

[0010] a motor, a sliding member, and a lead screw housing. The sliding member is slidably mounted on the lead screw housing and is cooperatively connected to a fourth mounting bracket.

[0011] Furthermore, the seat frame includes:

[0012] a front crossbar member and a rear crossbar member. The motor is mounted on the front crossbar member, and the lead screw housing is mounted on the rear crossbar member.

[0013] Furthermore, the backrest assembly includes:

[0014] a pair of oppositely arranged first mounting brackets for mounting the backrest and capable of moving between an upright position and an inclined position.

[0015] Furthermore, the seat assembly is capable of moving between a lowered non-inclined position and a raised inclined position to enable a zero-gravity arrangement of the seat.

[0016] Furthermore, when the seat assembly is raised, inclined, or in the zero-gravity state, the height of the footrest assembly is higher than the height of the backrest assembly to enable the seat to be in the zero-gravity position.

[0017] Furthermore, when the seat assembly is raised, inclined, or in the zero-gravity state, the height of the front end of the seat assembly is higher than the height of the rear end of the seat assembly.

[0018] Compared with the prior art, the beneficial effects of the present utility model are:

[0019] Thus, by providing a horizontally extending portion at the rear of the seat board, the floor area of the seat board can be increased. Compared with the design method of the seats of existing chairs, this method can improve the comfort of the group with a large body size. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0021] Figure 1 is a schematic structural view of the lengthened seat frame chair of Embodiment 1;

[0022] Figure 2 is a left view of the left reclined position of the lengthened seat frame chair of Embodiment 1;

[0023] Figure 3 is a right view of the left reclined position of the lengthened seat frame chair of Embodiment 1;

[0024] Figure 4Left view of the reclined position of the left piece of the extended seat frame seat in Embodiment 2.

[0025] In the figure: 100, seat; 102, base; 104, backrest assembly; 106, seat assembly; 108, footrest assembly; 110, first mounting bracket; 112, seat board; 114, horizontal extension; 116, first connection point; 118, V-shaped link; 120, second connection point; 122, first pivot link; 124, third connection point; 126, fourth connection point; 128, rear lift link; 130, fifth connection point; 131, sixth connection point; 132, second pivot link; 134, seventh connection point; 136, front lift link; 138, eighth connection point; 140, ninth connection point; 142, first link; 144, tenth connection point; 146, third pivot link; 148, eleventh connection point; 150, twelfth connection point; 152, fourth pivot link; 154, thirteenth connection point; 156, third link; 158, fourteenth connection point; 160, fifteenth connection point; 162, first footrest swing link; 164, sixteenth connection point; 166, first footrest extension link; 168, seventeenth connection point; 170, second mounting bracket; 172, eighteenth connection point; 174, fourth link; 176, nineteenth connection point; 178, first straight link; 180, twentieth connection point; 182, second footrest swing link; 184, twenty-first connection point; 186, twenty-second connection point; 188, second footrest extension link; 190, twenty-third connection point; 192, third mounting bracket; 194, twenty-fourth connection point; 196, first lower bracket support link; 198, twenty-fifth connection point; 200, second lower bracket support link; 202, twenty-sixth connection point; 204, twenty-seventh connection point; 208, limit stop; 210, second straight link; 212, twenty-eighth connection point; 214, footrest support link; 216, twenty-ninth connection point; 218, thirtieth connection point; 220, thirty-first connection point; 222, linear actuator; 224, motor; 226, front crossbar member; 228, lead screw; 230, rear crossbar member; 232, sliding member; 234, lead screw housing; 236, actuating link; 238, fourth mounting bracket; 239, upper end; 240, crossbeam; 242, fifth mounting bracket; 318, connecting rod; 362, third footrest swing link; 364, thirty-second connection point; 366, third footrest extension link; 368, thirty-third connection point; 382, fourth footrest swing link; 384, thirty-fourth connection point; 386, thirty-fifth connection point; 388, fourth footrest extension link; 390, thirty-sixth connection point; 392, sixth mounting bracket; 394, first pivot connection point; 396, second pivot connection point. Detailed implementation mode

[0026] The present utility model will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] As Figures 1 to 3 shown, it is the optimal embodiment of the present utility model. The lengthened seat frame chair 100 of this embodiment includes: a seat frame, a backrest assembly 104, a seat assembly 106, a footrest assembly 108, a linkage system, and a linear actuator 222. The backrest assembly 104, the seat assembly 106, and the footrest assembly 108 are all connected to the linear actuator 222. The linear actuator 222 is used to control the backrest assembly 104, the seat assembly 106, and the footrest assembly 108 to switch between an upright position, an extended position, and an inclined position; wherein: the seat assembly 106 includes: a pair of oppositely arranged seat plates 112. The seat plates 112 are arranged in a V shape or an L shape, and a horizontally extending portion 114 is provided at the rear of the seat plates 112. The horizontally extending portion 114 is used to increase the floor area occupied by the seat plates 112. Thus, by providing the horizontally extending portion 114 at the rear of the seat plates 112, the floor area occupied by the seat plates 112 can be increased, and compared with the design method of the seats of the existing chair 100, this method can improve the comfort of the group with a large body size.

[0030] In other words, by providing the horizontal extension portion 114, the effective length of the seat plate 112 can be extended to physically accommodate a person with a large body size (i.e., a person with a large body size often has a larger buttocks), thereby improving the comfort of the group with a large body size (i.e., when such a person with a large body size uses the seat 100 of this solution, their buttocks can act on the seat 100 and the horizontal extension portion 114. In this way, there will be no part of the buttocks of the person with a large body size that is not in contact with the seat 100, and it is more comfortable to use).

[0031] Specifically, the rear portion of the V-shaped or L-shaped seat plate 112 includes a twisted or elongated N-shaped or Z-shaped structure, and this structure includes a horizontal extension portion 114 that extends substantially horizontally in the center.

[0032] In this embodiment, the linear actuator 222 includes: a motor 224, a sliding member 232, and a lead screw housing 234. The sliding member 232 is slidably mounted on the lead screw housing 234 and is connected in cooperation with the fourth mounting bracket 238; the seat frame includes: a front crossbar member 226 and a rear crossbar member 230. The front crossbar member 226 and the rear crossbar member 230 are both mounted on the base 102. The motor 224 is mounted on the front crossbar member 226, and the lead screw housing 234 is mounted on the rear crossbar member 230. Specifically, when the lead screw 228 rotates, the sliding member 232 will translate forward or backward along the lead screw 228 housing according to the clockwise or counterclockwise rotation of the lead screw 228; the rear end of the actuating link 236 is mounted on the sliding member 232 through the fourth mounting bracket 238 and is connected to the crossbeam 240 through the fifth mounting bracket 242 fixed on the crossbeam 240; in addition, the opposite ends of the crossbeam 240 pass through the first straight link 178 and are connected to the first straight link 178.

[0033] Specifically, when the linear actuator 222 is actuated and the sliding member 232 moves from its retracted position to its extended position, the sliding member 232 will move from left to right, and the actuating link 236 will effectively rotate counterclockwise around the upper end portion 239 of the fourth mounting bracket 238; at this time, the seat plate 112 will be raised and move forward at the same time. Correspondingly, it will also cause the fourth link 174 to move, so that the footrest assembly 108 extends; as the footrest extends, the continuous movement of the sliding member 232 on or relative to the lead screw 228 housing causes the counterclockwise rotational movement of the first pivot link 122. In this way, the V-shaped link 118 will cause the first mounting bracket 110 to rotate counterclockwise, so that the backrest assembly 104 moves to the inclined position, as Figure 3 shown.

[0034] It should be noted that the second pivot link 132 rotates in the clockwise direction, such that the height of the front end portion of the seat plate 112 is higher than the height of the rear end portion (i.e., it rises relative to the front end portion of the base 102); correspondingly, the height of the footrest assembly 108 is higher than the height of the backrest assembly 104. In this way, the zero-gravity setting of the seat 100 can be achieved.

[0035] In this embodiment, the backrest assembly 104 includes: a pair of oppositely arranged first mounting brackets 110, the first mounting brackets 110 being used for mounting the backrest and being capable of moving between an upright position and an inclined position; the seat assembly 106 being capable of moving between a lowered non-inclined position and a raised inclined position to enable the zero-gravity arrangement of the seat 100; when the seat assembly 106 is raised, inclined, or in the zero-gravity state, the height of the footrest assembly 108 is higher than the height of the backrest assembly 104, so that the seat 100 is in the zero-gravity position; when the seat assembly 106 is raised, inclined, or in the zero-gravity state, the height of the front end of the seat assembly 106 is higher than the height of the rear end of the seat assembly 106. Specifically, the seat plate 112 is mounted to the first mounting bracket 110 through the first connection portion 116. The V-shaped link 118 is mounted to the first mounting bracket 110 through the second connection portion 120. The first pivot link 122 is arranged in a V shape and is mounted to the lower end of the V-shaped link 118 through the third connection portion 124, and the first pivot link 122 is mounted to the seat plate 112 through the fourth connection portion 126; in addition, the rear lift link 128 is mounted to the base 102 through the fifth connection portion 130, and the rear lift link 128 is mounted to the first pivot link 122 through the sixth connection portion 131.

[0036] Specifically, the second pivot link 132 is mounted to the seat plate 112 through the seventh connection portion 134, the front lift link 136 is mounted to the base 102 through the eighth connection portion 138, and the front lift link 136 is mounted to the second pivot link 132 through the ninth connection portion 140; in addition, the first link 142 is mounted to the front lift link 136 through the tenth connection portion 144, and the first link 142 is mounted to the third pivot link 146 (arc-shaped) through the eleventh connection portion 148; the third pivot link 146 is mounted to the seat plate 112 through the twelfth connection portion 150, and the fourth pivot link 152 is mounted to the third pivot link 146 through the thirteenth connection portion 154; the third link 156 (U-shaped) is mounted to the first pivot link 122 through the fourteenth connection portion 158, and the third link 156 is mounted to the second pivot link 132 through the fifteenth connection portion 160.

[0037] Specifically, the first footrest swing link 162 is installed on the seat plate 112 through the sixteenth connection 164. The first footrest swing link 162 is installed on the first footrest extension link 166 through the seventeenth connection 168. The first footrest extension link 166 is installed on the second mounting bracket 170 through the eighteenth connection 172. A pair of oppositely arranged second mounting brackets 170 are used to install the footrest (not shown in the figure). The fourth link 174 (U-shaped) is installed on the first footrest swing link 162 through the nineteenth connection 176. The fourth link 174 is installed on the first straight link 178 through the twentieth connection 180, and the first straight link 178 is connected to the seat plate 112 through the cross beam 240. The second footrest swing link 182 is installed on the seat plate 112 through the twenty-first connection 184. The second footrest swing link 182 is installed on the first footrest extension link 166 through the twenty-second connection 186. The second footrest swing link 182 is installed on the second footrest extension link 188 through the twenty-third connection 190. The second footrest extension link 188 is installed on the third mounting bracket 192 through the twenty-fourth connection 194.

[0038] Specifically, to complete the footrest assembly 108, the first lower bracket support link 196 is installed on the first footrest extension link 166 through the twenty-fifth connection 198. The first lower bracket support link 196 is installed on the second lower bracket support link 200 through the twenty-sixth connection 202. The second lower bracket support link 200 is installed on the third mounting bracket 192 through the twenty-seventh connection 204. In addition, the second mounting bracket 170 is provided with a chute, and the limit stop 208 on the third mounting bracket 192 is inserted into the chute and slides in the chute. The second straight link 210 is installed on the first lower bracket support link 196 through the twenty-eighth connection 212. The second straight link 210 is installed on the footrest support link 214 through the twenty-ninth connection 216. The footrest support link 214 is installed on the second footrest extension link 188 through the thirtieth connection 218. The first lower bracket support link 196 is installed on the second footrest extension link 188 through the thirty-first connection 220.

[0039] It should be noted that when the footrest is actually fixedly installed on the third mounting bracket 192 and the second mounting bracket 170, the footrest support link 214 is used to support the rear part of the footrest.

[0040] Embodiment 2:

[0041] As Figure 4As shown, the difference from Embodiment 1 is that the connecting rod 318 is arranged in a straight line instead of a V shape. The third footrest swing link 362 is installed on the seat plate 112 through the thirty-second connection 364, and the third footrest swing link 362 is installed on the third footrest extension link 366 through the thirty-third connection 368; the third footrest extension link 366 is installed on the sixth mounting bracket 392. The fourth footrest swing link 382 is installed on the seat plate 112 through the thirty-fourth connection 384, the fourth footrest link is installed on the third footrest extension link 366 through the thirty-fifth connection 386, the fourth footrest swing link 382 is installed on the fourth footrest extension link 388 through the thirty-sixth connection 390, and the fourth footrest extension link 388 is installed on the sixth mounting bracket 392 through the first pivot connection 394. The footrest support link 214 is installed on the third footrest extension link 366, and the footrest support link 214 is installed on the fourth footrest extension link 388 through the second pivot connection 396.

[0042] The above is based on the ideal embodiments of the present invention as an inspiration. Through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An elongated seat frame chair, characterized in that, Comprising: A seat frame, a backrest assembly (104), a seat assembly (106), a footrest assembly (108), a linkage system, and a linear actuator (222). The backrest assembly (104), the seat assembly (106), and the footrest assembly (108) are all connected to the linear actuator (222). The linear actuator (222) is used to control the backrest assembly (104), the seat assembly (106), and the footrest assembly (108) to switch between an upright position, an extended position, and a reclined position. Wherein: The seat assembly (106) comprises: A pair of oppositely arranged seat plates (112). The seat plates (112) are arranged in a V shape or an L shape. A horizontal extension (114) is provided at the rear of the seat plates (112). The horizontal extension (114) is used to increase the floor area occupied by the seat plates (112).

2. The lengthened seat frame seat according to claim 1, wherein The linear actuator (222) comprises: A motor (224), a sliding member (232), and a lead screw housing (234). The sliding member (232) is slidably mounted on the lead screw housing (234) and is cooperatively connected to a fourth mounting bracket (238).

3. The lengthened seat frame seat according to claim 2, characterized in that, The seat frame comprises: A front crossbar member (226) and a rear crossbar member (230). The motor (224) is mounted on the front crossbar member (226), and the lead screw housing (234) is mounted on the rear crossbar member (230).

4. The elongated seat frame seat according to claim 1, wherein, The backrest assembly (104) comprises: A pair of oppositely arranged first mounting brackets (110). The first mounting brackets (110) are used to mount the backrest and are capable of moving between an upright position and a reclined position.

5. The elongated seat frame seat according to claim 1, wherein The seat assembly (106) is capable of moving between a lowered non-reclined position and a raised reclined position to enable a zero-gravity arrangement of the seat (100).

6. The elongated seat frame seat according to claim 5, characterized in that, When the seat assembly (106) is raised, reclined, or in a zero-gravity state, the height of the footrest assembly (108) is higher than the height of the backrest assembly (104) so that the seat (100) is in a zero-gravity position.

7. The lengthened seat frame seat according to claim 6, wherein When the seat assembly (106) is raised, reclined, or in a zero-gravity state, the height of the front end of the seat assembly (106) is higher than the height of the rear end of the seat assembly (106).

Images