Suspension seat with adjustable angle

Abstract

The utility model relates to an angle-adjustable suspension seat which comprises a base, a seat assembly located above the base, a connecting rod mechanism movably connected to the seat assembly and a driving mechanism used for driving the connecting rod mechanism to move so as to drive the whole seat assembly to swing and rotate. And the driving mechanism is connected between the connecting rod mechanism and the base. Through the arrangement of the driving mechanism and the connecting rod mechanism, the angle of the suspension seat can be adjusted, the suspension seat can be fully adjusted to be in a comfortable state according to personal preference, and the overall comfort is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a suspension seat with adjustable angle. Background Art

[0002] In order to improve the shock absorption effect of the seat, a suspension seat is often used. The current suspension seats mainly include air suspension or energy absorption elements to achieve the up and down movement of the seat. Both types of suspension seats have no driving mechanism, and are only used to achieve the state that the seat maintains a constant height relative to the ground when it is bumped. The angle of the suspension seat cannot be adjusted, and the overall comfort is relatively poor. Utility Model Content

[0003] In order to solve the above problems, the utility model provides an angle-adjustable suspension seat. Through the setting of a driving mechanism and a connecting rod mechanism, the angle of the suspension seat can be adjusted, and it can be adjusted to a comfortable state according to personal preference, thereby greatly improving the overall comfort.

[0004] The utility model is realized through the following scheme: an angle-adjustable suspended seat, comprising a base, a seat assembly located above the base, a connecting rod mechanism movably connected to the seat assembly, and a driving mechanism for driving the connecting rod mechanism to move so as to drive the entire seat assembly to swing, wherein the driving mechanism is connected between the connecting rod mechanism and the base.

[0005] A further improvement of the angle-adjustable suspension seat of the utility model is that the seat assembly comprises a backrest assembly and a seat cushion assembly which are connected to each other, and the connecting rod mechanism is movably connected to the backrest assembly.

[0006] A further improvement of the angle-adjustable suspension seat of the utility model is that the connecting rod mechanism includes a first connecting rod hinged to the base, and a first end of the first connecting rod is connected to the driving mechanism so as to be driven by the driving mechanism to rotate relative to the base.

[0007] A further improvement of the angle-adjustable suspension seat of the utility model is that the driving mechanism includes a first screw rod and a first motor drivingly connected to the first screw rod, the first motor is hinged to the base, a screw sleeve is threadedly connected to the first screw rod, and the screw sleeve is hinged to the first end of the first connecting rod to drive the first end of the first connecting rod to move along the first screw rod.

[0008] A further improvement of the angle-adjustable suspension seat of the utility model is that the connecting rod mechanism also includes a second connecting rod, the first end of the second connecting rod is hinged to the second end of the first connecting rod, and the second end of the second connecting rod is connected to the backrest assembly through a connecting structure.

[0009] A further improvement of the angle-adjustable suspension seat of the utility model is that the connection structure includes a lower rail and an upper rail slidably connected to the lower rail, the lower rail is hinged to the base, and the bottom end of the lower rail is hinged to the second end of the second connecting rod, and the upper rail is fixedly connected to the backrest assembly.

[0010] A further improvement of the angle-adjustable suspension seat of the utility model is that the seat assembly comprises a backrest assembly and a seat cushion assembly which are connected to each other, and the connecting rod mechanism is movably connected to the seat cushion assembly.

[0011] A further improvement of the angle-adjustable suspension seat of the utility model is that the connecting rod mechanism includes a first connecting rod, a first end of the first connecting rod is connected to the driving mechanism, a second end of the first connecting rod is fixedly connected to a rotating shaft, and the rotating shaft passes through the base and is fixedly connected to the seat cushion assembly, so that the first connecting rod is driven by the driving mechanism to drive the seat cushion assembly to swing relative to the base.

[0012] A further improvement of the angle-adjustable suspension seat of the utility model is that the driving mechanism includes a first screw rod and a first motor drivingly connected to the first screw rod, the first motor is hinged to the base, a screw sleeve is threadedly connected to the first screw rod, and the screw sleeve is hinged to the first end of the first connecting rod to drive the first end of the first connecting rod to move along the first screw rod.

[0013] A further improvement of the angle-adjustable suspension seat of the utility model is that the seat cushion assembly includes a lower connecting plate, a limit pin is also provided on the first connecting rod, a limit groove cooperating with the limit pin is provided on the base, and the limit pin is fixedly connected to the lower connecting plate after passing through the limit groove.

[0014] A further improvement of the angle-adjustable suspension seat of the utility model is that the limiting groove is configured to allow the limiting pin to move in the limiting groove as the seat cushion assembly swings to limit the rotation angle of the seat cushion assembly.

[0015] The utility model includes but is not limited to the following beneficial effects:

[0016] The utility model can adjust the angle of the suspension seat through the coordinated design of the driving mechanism, the connecting rod mechanism and the seat assembly, and can fully adjust it to a comfortable state according to personal preferences, thereby greatly improving the overall comfort.

[0017] The utility model can be applied to different application occasions through the design of two connecting rod mechanisms: one is a connecting rod mechanism that can be connected to the backrest assembly, which can make the overall suspension feeling of the seat stronger and is suitable for rear seats, and through the cooperation of the upper and lower rail sliding structures of the backrest assembly, the seat height can also be adjusted; the other is a connecting rod mechanism connected to the seat cushion assembly, which does not require the design of a large driving force and is suitable for arranging front seats with a smaller space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structural diagram of the first embodiment of the utility model is shown.

[0019] Figure 2 Shows Figure 1 Exploded diagram.

[0020] Figure 3 The figure shows a schematic diagram of the connection structure between the driving mechanism and the connecting rod mechanism in the first embodiment of the utility model.

[0021] Figure 4 Shows Figure 3 Exploded diagram.

[0022] Figure 5 The figure shows a schematic diagram of the connection structure between the lower rail and the supporting feet in the first embodiment of the utility model.

[0023] Figure 6 Shows Figure 5 Exploded diagram.

[0024] Figure 7 The figure shows a schematic diagram of the connection structure of the lower rail, the connecting rod mechanism and the supporting feet in the first embodiment of the utility model.

[0025] Figure 8 Shows Figure 7 Exploded diagram.

[0026] Fig. 9 An exploded view of the connection structure between the driving mechanism and the connecting rod mechanism in the first embodiment of the utility model is shown.

[0027] Fig.10 A cross-sectional view of the driving mechanism in the first embodiment of the utility model is shown.

[0028] Fig.11 The side structure comparison schematic diagram of the first embodiment of the utility model before and after angle adjustment is shown.

[0029] Fig.12 A comparative schematic diagram of the driving mechanism of the first embodiment of the utility model before and after angle adjustment is shown.

[0030] Fig.13A schematic diagram of the motion principle of angle adjustment in the first embodiment of the utility model is shown.

[0031] Fig.14 The overall structural diagram of the second embodiment of the utility model is shown.

[0032] Fig.15 Shows Fig.14 Exploded diagram.

[0033] Fig.16 The structure diagram of the slide rail mechanism in the second embodiment of the utility model is shown. Figure 1 .

[0034] Fig.17 Shows Fig.16 Exploded diagram.

[0035] Fig.18 A schematic diagram of the connection structure between the small gear box and the first screw rod in the second embodiment of the utility model is shown.

[0036] Fig.19 Shows Fig.18 Exploded diagram.

[0037] Fig. 20 Shows Fig.18 AA cross-section diagram.

[0038] Fig.21 The structure diagram of the slide rail mechanism in the second embodiment of the utility model is shown. Figure 2 .

[0039] Fig. 22 Shows Fig.21 BB cross-section diagram.

[0040] Fig.23 A schematic diagram comparing the side structures of the second embodiment of the utility model before and after adjustment is shown.

[0041] Fig.24 A schematic diagram of the motion principle of the second embodiment of the utility model is shown.

[0042] Fig.25 The overall structural diagram of the third embodiment of the utility model is shown.

[0043] Fig.26 Shows Fig.25 Exploded diagram.

[0044] Fig. 27 A schematic diagram of the connection structure between the driving mechanism and the connecting rod mechanism in the third embodiment of the utility model is shown.

[0045] Fig.28 Shows Fig. 20 Exploded diagram.

[0046] Fig.29 A schematic diagram comparing the side structures of the third embodiment of the utility model before and after angle adjustment is shown.

[0047] Figures 1 to 24 Middle: 10, base; 11, support foot; 12, U-shaped ear seat; 13, first metal baffle; 14, first plastic gasket; 15, first bushing; 20, driving mechanism; 21, first motor; 22, first screw rod; 23, screw sleeve; 30, first connecting rod; 31, second metal baffle; 32, second plastic gasket; 33, second bushing; 40, second connecting rod; 50, upper hinge; 60, front hinge; 61, first bolt; 62, first nut; 70, lower hinge; 80, pivot; 81, step nut; 82, step bolt; 100, seat assembly; 101, welding block; 110, upper rail; 1101, upper slide; 1102, opening; 1103, lower lock edge; 1104, mounting hole; 111, worm; 1111, second through hole; 112 worm wheel; 11 3. The third bushing; 114. The outer cover; 115. The inner cover; 116. The lower end cover; 117. The upper end cover; 120. The lower rail; 1201. The lower slide groove; 1202. The upper lock edge; 121. The second screw rod; 1211. The first through hole; 122. The first fixing block; 123. The second fixing block; 130. The slide rail mechanism; 131. The second motor; 132. The motor shaft; 133. The fourth bushing; 134. The driving gear; 135. The driven gear; 136. The driving shaft; 137. The driven pull; 140. The left box cover; 1401. The transmission shaft hole; 141. The right box cover; 142. The second bolt; 143. The second nut; 144. The left L-shaped plate; 145. The right L-shaped plate; 1451. The motor shaft hole; 146. The U-shaped bracket; 147. The fixing plate; 148. The vertical plate.

[0048] Figure 25 to Figure 29 In: 10, base; 11, support foot; 12, U-shaped ear seat; 13, limit groove; 20, driving mechanism; 21, first motor; 22, first screw rod; 23, screw sleeve; 30, first connecting rod; 31, limit pin; 50, rotating shaft; 51, fifth bushing; 60, front hinge; 61, first bolt; 62, first nut; 80, pivot part; 81, step nut; 82, step bolt; 100, seat assembly; 102, lower connecting plate. DETAILED DESCRIPTION

[0049] In order to solve the problem that the traditional suspension seat cannot adjust the angle, the utility model provides an angle-adjustable suspension seat, including a base, a seat assembly located above the base, a connecting rod mechanism movably connected to the seat assembly, and a driving mechanism for driving the connecting rod mechanism to move so as to drive the entire seat assembly to swing, and the driving mechanism is connected between the connecting rod mechanism and the base. The utility model can adjust the angle of the suspension seat, and can fully adjust it to a comfortable state according to personal preferences, greatly improving the overall comfort. The following is a further description of the angle-adjustable suspension seat with a specific embodiment combined with the accompanying drawings.

[0050] The seat assembly includes a backrest assembly and a seat cushion assembly connected to each other. The angle adjustment of the utility model can be achieved by using a connecting rod mechanism to drive the backrest assembly to swing to achieve the angle adjustment of the entire seat assembly, or by using a connecting rod mechanism to drive the seat cushion assembly to swing to achieve the angle adjustment of the entire seat assembly. The following is an explanation of different embodiments.

[0051] In the first embodiment, the connecting rod mechanism is used to drive the backrest assembly to swing and rotate to achieve the angle adjustment of the entire seat assembly. Figures 1 to 4 As shown, an angle-adjustable suspension seat comprises a base 10, a seat assembly 100, a connecting rod mechanism and a driving mechanism 20. A foot 11 is fixed on the base 10, and a lower rail 120 is connected to the back of the backrest assembly of the seat assembly 100. The lower rail 120 is hinged to the upper part of the foot 11 through an upper hinge 50, so that the entire seat assembly 100 forms a suspension structure. The connecting rod mechanism is hinged to the lower part of the foot 11 through a lower hinge 70, and the front and rear ends of the connecting rod mechanism are hinged to the driving mechanism 20 and the lower rail 120 respectively. The fixed part of the driving mechanism 20 is hinged to the lower front end of the foot 11. The driving mechanism 20 drives the connecting rod mechanism to move to drive the entire seat assembly 100 to swing, thereby realizing the adjustment of the angle of the suspension seat.

[0052] In this embodiment, see Figure 5 and Figure 6 As shown, the support leg 11 includes two support plates arranged opposite to each other, and the upper hinge 50 is a rotating shaft structure, which passes through the two support plates of the support leg 11 and is fixed between the two support plates through the first metal baffle 13, the first plastic gasket 14 and the first bushing 15. A semi-annular groove is formed on the back of the lower rail 120, and the semi-annular groove forms a closed loop channel by mating with the C-shaped welding block 101. The upper hinge 50 is rotatably arranged in the closed loop channel to realize the pivot connection between the lower rail 120 and the upper part of the support leg 11.

[0053] See also Figure 3 , Figure 4 , Figure 7 and Figure 8As shown, the connecting rod mechanism includes a second connecting rod 40 and a first connecting rod 30. The second connecting rod 40 is a crank, which satisfies the requirement of being subjected to force only at two ends and being in a balanced state, that is, the directions of the resultant forces at its two ends are opposite and the magnitudes of the forces are equal. The first connecting rod 30 includes two connecting plates. The front end of the second connecting rod 40 is inserted between the rear ends of the two connecting plates and is pivotally connected to the rear ends of the two connecting plates. The rear end of the second connecting rod 40 is hinged to the bottom end of the lower rail 120. The front ends of the two connecting plates are hinged to the driving part of the driving mechanism 20. The two connecting plates are provided with through holes to cooperate with the lower hinge 70, and the two supporting plates of the supporting leg 11 are hinged through the lower hinge 70. The lower hinge 70 is a rotating rod, and the lower parts of the two connecting plates and the two supporting plates are provided with through holes for the rotating rod to pass through. The rotating rod passes through the two connecting plates and the two supporting plates and cooperates with the second metal baffle 31, the second plastic gasket 32 ​​and the second bushing 33 to realize the hinge connection between the first connecting rod 30 and the lower part of the supporting leg 11. It should be noted that, according to actual needs, the through hole for the rotating rod to pass through can be biased to one side of the second connecting rod 40 to achieve force increase and deceleration, or it can be biased to one side of the driving mechanism 20 to achieve force reduction and speed increase.

[0054] See also Figures 2 to 4 , Fig. 9 and Fig.10 As shown, the driving mechanism 20 includes a first screw rod 22 and a first motor 21 drivingly connected to the first screw rod 22, the first motor 21 is hinged to the base 10 through a front hinge 60, and a screw sleeve 23 is screwed on the first screw rod 22 for the front end of the connecting rod mechanism to be hinged to drive the front end of the connecting rod mechanism to move along the first screw rod 22. Specifically, the first motor 21 is arranged horizontally, and the first screw rod 22 is arranged longitudinally. A transmission member for converting the horizontal rotational motion of the first motor 21 axis into the longitudinal rotational motion of the first screw rod 22 is connected between the first motor 21 and the first screw rod 22. The front hinge 60 includes a first bolt 61 and a first nut 62, and a U-shaped ear seat 12 is also fixed to the bottom front end of the support leg 11, and the transmission member can be rotatably connected in the U-shaped ear seat 12 in the horizontal direction through the first bolt 61 and the first nut 62. The screw sleeve 23 is accommodated between the front ends of the two connecting plates of the first connecting rod 30, and a pair of pivot holes are opened in the lateral direction on the peripheral wall of the screw sleeve 23, and another pair of pivot holes are opened at the front ends of the two connecting plates of the first connecting rod 30, and a pair of pivot joints 80 and the aforementioned two pairs of pivot holes are used to realize the pivot connection between the front end of the first connecting rod 30 and the screw sleeve 23. The pivot joint 80 can be a combination of a step bolt 82 and an adapted step nut 81. Correspondingly, the hinge between the rear end of the first connecting rod 30 and the front end of the second connecting rod 40, and between the rear end of the second connecting rod 40 and the bottom end of the lower rail 120 can also be realized by using a similar pivot joint 80.

[0055] Different from the structure of traditional seats that fix the entire chair to the bottom plate through the seat cushion, the seat assembly of this embodiment is connected to the base through the backrest assembly, which releases more space under the seat cushion and has stronger suspension, which is suitable for rear seats. The backrest angle is adjusted by the first screw rod and the first motor driving the connecting rod mechanism, which is different from the traditional angle adjuster that adjusts the backrest separately. However, the problem brought by directly driving the backrest to swing is that the driving force requirement is higher.

[0056] Therefore, the present embodiment increases the driving force of the backrest assembly in two aspects: on the one hand, the number of driving mechanisms 20 is increased, and two sets of driving mechanisms 20 are used for driving. Accordingly, the number of connecting rod mechanisms and lower rails 120 is also set to two sets. Specifically, the two lower rails 120 are arranged side by side on the back of the backrest assembly, and are hinged to the upper part of the support leg 11 through the same upper hinge 50, the four connecting plates of the two first connecting rods 30 are hinged to the lower part of the support leg 11 through the same lower hinge 70, the two first motors 21 are respectively hinged to the two U-shaped ear seats 12 through a front hinge 60, and the two screw sleeves 23 are correspondingly pivoted to the front ends of the two first connecting rods 30.

[0057] On the other hand, the maximum driving effect is achieved by matching the sizes and angles of the various components. The first screw rod 22 and the lower rail 120 are also integrated into the entire driving path, which simplifies the structure of the connecting rod mechanism to the greatest extent and optimizes the overall driving effect. Figures 11 to 13 As shown, when the seat is moved from the initial position (i.e. Fig.11 The left figure state corresponds to Fig.12 The left picture and Fig.13 When the adjustment starts, the first motor 21 drives the first screw rod 22 to rotate. The rotation of the first screw rod 22 causes the screw sleeve 23 sleeved on the first screw rod 22 to move along the first screw rod 22, thereby pushing the first connecting rod 30 to swing. The swing of the first connecting rod 30 pushes the second connecting rod 40 to swing, thereby pulling the lower rail 120 to swing, and finally causing the seat assembly 100 to swing backward with the hinge 50 as the rotating axis, thereby achieving the angle adjustment of the suspended seat. When the screw sleeve 23 moves to the end of the first screw rod 22, the seat assembly 100 swings to the target position (i.e. Fig.11 The state on the right side of the diagram corresponds to Fig.12 The right picture and Fig.13 In the above driving process, the angle between the driving mechanism 20 and the base 10 changes with the movement of the first connecting rod 30.

[0058] The main structure of the second embodiment is the same as that of the first embodiment, and the connecting rod mechanism is also used to drive the backrest assembly to swing to achieve the angle adjustment of the entire seat assembly. The difference is that the backrest assembly and the lower rail can slide relative to each other. Fig.14 and Fig.15As shown, the seat further includes a slide rail mechanism 130, which includes the lower rail 120, an upper rail 110 fixed to the backrest assembly, a second screw rod 121 and a second motor 131 connected between the lower rail 120 and the upper rail 110 and used to drive the upper rail 110 to slide relative to the lower rail 120 to achieve height adjustment of the seat assembly. Figures 16 to 22 As shown, the two ends of the second screw rod 121 are supported and fixed on the lower rail 120 by the first fixing block 122 and the second fixing block 123 respectively, and the second motor 131 is fixed on the upper rail 110 by the fixing plate 147 (according to the actual structural situation, the second motor 131 can also be directly fixed on the backrest assembly), and the second screw rod 121 and the second motor 131 are connected by a worm gear structure, and the worm gear structure includes a worm wheel 112 screwed to the second screw rod 121, and a worm 111 meshed with the worm wheel 112. Specifically, the first end of the worm 111 is provided with helical teeth, which mesh with the outer periphery of the worm wheel 112 through the helical teeth, and the second motor 131 drives the second end of the worm 111 to move the worm wheel 112 along the second screw rod 121. Preferably, a lower slide groove 1201 is formed on the lower rail 120, an upper slide groove 1101 matching the lower slide groove 1201 is formed on the upper rail 110, the second screw rod 121 is accommodated between the lower slide groove 1201 and the upper slide groove 1101, and an opening 1102 is provided on the upper slide groove 1101 for the worm gear structure to be clamped and extended. An upper locking edge 1202 is provided on the lower slide groove 1201, and a lower locking edge 1103 matching the upper locking edge 1202 is provided on the upper slide groove 1101. Through the interlocking of the upper and lower locking edges, the upper rail 110 will not be separated from the lower rail 120 when sliding relative to the lower rail 120. In addition, a plurality of mounting holes 1104 for selective connection of the backrest assembly are provided at intervals along the relative sliding direction on the upper rail 110. The fixing plate 147 is selectively fixed to the mounting holes 1104 by setting fixing holes at the four corners.

[0059] For the suspension seat with two lower rails 120, the number of the upper rails 110, the second screw rod 121 and the worm gear structure are all two, and they are arranged one by one. A gear assembly is also arranged between the second motor 131 and the two worm gear structures, and the gear assembly is simultaneously connected to the two worms 111. Specifically, the gear assembly includes a driven shaft 137 coaxially connected between the two worms 111, a driven gear 135 sleeved on the driven shaft 137, and a driving gear 134 meshed with the driven gear 135. The driving gear 134 is sleeved on a driving shaft 136. The motor shaft 132 of the second motor 131 is coaxially connected to the driving shaft 136 to drive the driving gear 134. The driving gear 134 and the driven gear 135 are externally provided with a large gearbox, which is formed by a left box cover 140 and a right box cover 141 that are snap-fitted together. The left box cover 140 and the right box cover 141 are both provided with transmission shaft holes 1401 for the driving shaft 136 and the driven shaft 137 to pass through respectively. The driving shaft 136 and the driven shaft 137 are both rotatably connected to the corresponding transmission shaft holes 1401 through the third bushing 113. The lower edge of the fixing plate 147 is fixed with an inverted U-shaped bracket 146 by means of a second bolt 142 and a second nut 143, and the upper edge is fixed with a vertical plate 148, and the left L-shaped plate 144 and the right L-shaped plate 145 are respectively fixed to the opposite sides of the vertical plate 148, and an installation space for the large gearbox is formed between the left L-shaped plate 144 and the right L-shaped plate 145, and one end of the second motor 131 is fixed to one side of the inverted U-shaped bracket 146, and the end of the second motor 131 close to the motor shaft 132 is located between the large gearbox and the right L-shaped plate 145. The right L-shaped plate 145 is provided with a motor shaft hole 1451, and the end of the motor shaft 132 away from the driving shaft 136 is inserted into the motor shaft hole 1451 and is rotatably connected to the motor shaft 1451 through the fourth bushing 133.

[0060] In order to ensure the stability of the worm gear structure, the slide rail mechanism 130 also includes two small gear boxes for limiting and supporting the two worm gear structures. The small gear box includes an inner cover 115 and an outer cover 114 arranged along the axial direction of the first screw, and an upper end cover 117 and a lower end cover 116 arranged along the axial direction of the worm 111. The inner cover 115, the outer cover 114, the upper end cover 117 and the lower end cover 116 are relatively inwardly buckled and connected in an I-shaped shape to constrain the worm gear structure from two directions respectively to prevent the helical teeth of the worm wheel 112 and the worm 111 from being separated from each other. In addition, the lower end cover 116 is provided with a first through hole 1211 for the corresponding second screw 121 to pass through, and the inner cover 115 is provided with a second through hole 1111 for the second end of the corresponding worm 111 to pass inward.

[0061] The operating principle of the slide rail mechanism 130 is as follows: the motor shaft 132 of the second motor 131 rotates to drive the driving shaft 136 to rotate, thereby driving the driving gear 134 to rotate, and the driven gear 135 rotates with the rotation of the driving gear 134, thereby driving the driven shaft 137 and the worm 111 at both ends thereof to rotate. Through the structural principle of the worm gear, the rotation of the worm 111 is converted into the rotation of the corresponding worm wheel 112. Since the worm wheel 112 is screwedly connected to the second screw rod 121 and the second screw rod 121 is fixed on the lower rail 120, the worm wheel 112 is forced to move along the second screw rod 121, thereby driving the fixed plate 147 (including the second motor 131 and the gear assembly fixed on the fixed plate 147) and the upper rail 110 (including the backrest assembly fixed on the upper rail 110) to move relative to the second screw rod 121 (that is, relative to the lower rail 120).

[0062] This embodiment can achieve angle adjustment of the entire seat assembly by driving the backrest assembly to swing through the connecting rod mechanism, and can also achieve height adjustment of the seat assembly by driving the upper rail to slide relative to the lower rail through the slide rail mechanism. Fig.23 and Fig.24 As shown, in the process of achieving the above angle adjustment, the height of the suspension seat can be adjusted synchronously as needed. Fig.23 and Fig.24 The left figure state) swings to the target position (corresponding to Fig. 22 and Fig.23 During the process of the suspension seat 120 (the state in the right figure), the upper rail 110 (including the backrest assembly fixed on the upper rail 110) is actively controlled to move downward by a displacement d relative to the lower rail 120. This embodiment can also adjust the height of the seat on the basis of the first embodiment. Passengers can adjust the angle and height according to their own needs, further improving the comfort of the suspension seat.

[0063] In the third embodiment, the seat cushion assembly is driven to swing by a connecting rod mechanism to adjust the angle of the entire seat assembly. Figures 24 to 28As shown, an angle-adjustable suspension seat includes a base 10, a seat assembly 100, a connecting rod mechanism and a driving mechanism 20. The connecting rod mechanism includes a first connecting rod 30, a first end of which is connected to the driving mechanism 20, and a second end of which is fixedly connected to a rotating shaft 50, which passes through the base 10 and is fixedly connected to the seat cushion assembly, so that the first connecting rod 30 is driven by the driving mechanism 20 to drive the seat cushion assembly to swing relative to the base 10. Specifically, the driving mechanism 20 includes a first screw rod 22 and a first motor 21 drivingly connected to the first screw rod 22. A U-shaped ear seat 12 is fixed on the base 10, and the first motor 21 is hinged to the U-shaped ear seat 12 through a front hinge 60, and the front hinge 60 includes a first bolt 61 and a first nut 62. The connection between the first motor 21 and the first screw rod 22, and the hinge structure between the first motor 21 and the U-shaped ear seat 12 are similar to those in the first and second embodiments, and are not described in detail here. The outer side of the seat cushion assembly is connected to a lower connecting plate 102, and a triangular support plate 11 is fixed on the base 10 at an inner position of the lower connecting plate 102. The lower connecting plate 102 is pivoted to the top corners of the two support plates 11 through a rotating shaft 50. The rotating shaft 50 cooperates with the fifth bushing 51 to penetrate and connect the two lower connecting plates 102 and the two support plates 11. The second end of the first connecting rod 30 is provided with a U-shaped notch for supporting the rotating shaft 50 or a first pivot hole for the rotating shaft 50 to pass through. A pair of pivoting ear plates are formed at the first end of the first connecting rod 30, a screw sleeve 23 is screwed and connected to the first screw rod 22, and the screw sleeve 23 is accommodated between the pair of pivoting ear plates. Second pivoting holes are respectively provided on the outer wall of the screw sleeve 23 and the pair of pivoting ear plates, and the first end of the first connecting rod 30 and the screw sleeve 23 are pivotally connected by two pivoting members 80 and the aforementioned second pivoting holes, respectively, so as to drive the first end of the first connecting rod 30 to move along the first screw rod 22. The pivoting member 80 can be a combination of a step bolt 82 and an adapted step nut 81.

[0064] Preferably, a limit pin 31 is further provided on the first connecting rod 30, and a limit slot 13 cooperating with the limit pin 31 is provided on the base 10, and the limit pin 31 passes through the limit slot 13 and is fixedly connected to the lower connecting plate 102. Further, the limit slot 13 is configured to allow the limit pin 31 to move in the limit slot 13 as the seat cushion assembly swings to limit the rotation angle of the seat cushion assembly, such as the limit slot 13 can be configured as a long slot, and the limit pin 31 moves along the length direction of the long slot as the seat cushion assembly swings, and the length of the long slot is determined according to the required rotation angle of the seat cushion assembly.

[0065] In order to increase the driving force of the connecting rod mechanism on the seat assembly 100, the number of connecting rod mechanisms and driving mechanisms 20 can be increased to two, and the seat assembly 100 can be driven by two sets of driving mechanisms 20 and connecting rod mechanisms. The connecting rod mechanism of this embodiment is connected to the seat cushion assembly, and the swing axis of the entire seat assembly is lower than that of the first and second embodiments, so there is no need to design a larger driving force, and the structure of the connecting rod mechanism is relatively simple, which is suitable for arranging front seats with a small space.

[0066] The utility model is described in detail above in conjunction with the embodiments of the drawings. A person skilled in the art can make various variations of the utility model according to the above description. Therefore, some details in the embodiments should not constitute a limitation of the utility model, and the scope of protection of the utility model shall be defined by the scope of the attached claims.

Claims

1. An angle-adjustable suspension seat, characterized in that: It includes a base, a seat assembly located above the base, the seat assembly is rotatably connected to the base via a rotating shaft; a connecting rod mechanism movably connected to the seat assembly, and a driving mechanism for driving the connecting rod mechanism to move so as to drive the entire seat assembly to swing around the rotating shaft relative to the base, the driving mechanism being connected between the connecting rod mechanism and the base.

2. The angle-adjustable suspension seat according to claim 1, characterized in that: The seat assembly comprises a backrest assembly and a seat cushion assembly which are connected to each other, and the connecting rod mechanism is movably connected to the backrest assembly.

3. The angle-adjustable suspension seat as claimed in claim 2, characterized in that: The connecting rod mechanism includes a first connecting rod hinged to the base, and a first end of the first connecting rod is connected to the driving mechanism so as to be driven by the driving mechanism to rotate relative to the base.

4. The angle-adjustable suspension seat as claimed in claim 3, characterized in that: The driving mechanism includes a first screw rod and a first motor drivingly connected to the first screw rod, the first motor is hinged to the base, a screw sleeve is threadedly connected to the first screw rod, and the screw sleeve is hinged to the first end of the first connecting rod to drive the first end of the first connecting rod to move along the first screw rod.

5. The angle-adjustable suspension seat as claimed in claim 4, characterized in that: The connecting rod mechanism also includes a second connecting rod, a first end of the second connecting rod is hinged to the second end of the first connecting rod, and the second end of the second connecting rod is connected to the backrest assembly through a connecting structure.

6. The angle-adjustable suspension seat as claimed in claim 5, characterized in that: The connecting structure comprises a lower rail and an upper rail slidably connected to the lower rail, the lower rail is hinged to the base, and the bottom end of the lower rail is hinged to the second end of the second connecting rod, and the upper rail is fixedly connected to the backrest assembly.

7. The angle-adjustable suspension seat according to claim 1, characterized in that: The seat assembly comprises a backrest assembly and a seat cushion assembly which are connected to each other, and the connecting rod mechanism is movably connected to the seat cushion assembly.

8. The angle-adjustable suspension seat as claimed in claim 7, characterized in that: The connecting rod mechanism includes a first connecting rod, a first end of which is connected to the driving mechanism, a second end of which is fixedly connected to the rotating shaft, and the rotating shaft passes through the base and is fixedly connected to the seat cushion assembly, so that the first connecting rod is driven by the driving mechanism to drive the seat cushion assembly to swing relative to the base.

9. The angle-adjustable suspension seat as claimed in claim 8, characterized in that: The driving mechanism includes a first screw rod and a first motor drivingly connected to the first screw rod, the first motor is hinged to the base, a screw sleeve is threadedly connected to the first screw rod, and the screw sleeve is hinged to the first end of the first connecting rod to drive the first end of the first connecting rod to move along the first screw rod.

10. The angle-adjustable suspension seat according to claim 8, characterized in that: The seat cushion assembly includes a lower connecting plate. A limit pin is also provided on the first connecting rod. A limit groove cooperating with the limit pin is provided on the base. The limit pin passes through the limit groove and is fixedly connected with the lower connecting plate.

11. The angle-adjustable suspension seat according to claim 10, characterized in that: The limiting groove is configured to allow the limiting pin to move in the limiting groove as the seat cushion assembly swings to limit the rotation angle of the seat cushion assembly.

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