Seat cushion rear end comfort compensation mechanism

Abstract

The invention relates to a seat cushion rear end comfort compensation mechanism which comprises a seat cushion frame assembly and a compensation supporting assembly. The seat cushion frame assembly comprises a frame unit, a front transverse pipe and a rear transverse pipe. The frame unit comprises a base, a seat cushion side plate and a front connecting plate; the seat cushion frame assembly further comprises a height adjusting mechanism. The height adjusting mechanism comprises a height adjusting sector which is fixed to the rear transverse pipe and hinged to the base. The compensation supporting assembly comprises a compensation supporting transverse pipe. The two sides of the compensation supporting transverse pipe are rotationally sleeved with connecting side plates, and the front transverse pipe is rotationally sleeved with the connecting side plates. The compensation supporting transverse pipe is provided with a first connecting piece; the first connecting piece comprises a first connecting plate and a second connecting plate; one end of the first connecting plate rotatably sleeves the compensation supporting transverse pipe, and the other end of the first connecting plate is hinged to one end of the second connecting plate; the second connecting plate is fixed to the rear transverse pipe. The invention effectively solves the problems of insufficient support of the rear end of the seat cushion, human engineering design defects and structural stability of the existing seat.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle seats, and particularly to a comfort compensation mechanism for the rear end of a seat cushion. Background Art

[0002] During the use of vehicle seats, the high-lift function of the seat is an important design to meet the needs of different users. However, when the seat is lowered from the high-lift position, there are many drawbacks in the prior art:

[0003] 1. Insufficient support at the rear end of the seat cushion: As the seat is lowered from the high-lift position, the support structure at the rear end of the seat cushion fails to be effectively adjusted, resulting in the sinking of the rear end of the seat cushion and a weakened support force on the user's buttocks and waist; during long-term sitting, users are prone to fatigue, especially in the case of long-term driving or sitting, this discomfort will be more obvious; for example, during long-distance driving, the driver will frequently adjust their sitting posture due to insufficient support at the rear end of the seat cushion, distracting their attention and affecting driving safety;

[0004] 2. Defects in ergonomic design: When the existing seats are lowered from the high-lift position, the ergonomic principles are not fully considered, and the fit between the rear end of the seat cushion and the human body becomes worse; the pressure distribution on the human body on the seat is uneven, resulting in excessive local pressure, affecting blood circulation and reducing the sitting comfort; for example, for users with a taller stature, after the seat is lowered from the high-lift position, the pressure on the legs and waist is concentrated, and soreness is likely to occur.

[0005] 3. Structural stability problems: During the process of lowering the seat from the high-lift position, the structural stability of the rear end of some seats is insufficient, and shaking or abnormal noises are likely to occur; this not only affects the user experience but also may affect the service life of the seat, increasing the maintenance cost and potential safety hazards; for example, after frequent operations of lowering the seat from the high-lift position, the connecting components at the rear end of the seat cushion become loose, resulting in a decrease in the overall stability of the seat.

[0006] Therefore, developing a mechanism that can compensate for the comfort of the rear end of the seat cushion when the seat is lowered from the high-lift position has become an urgent problem to be solved at present. Summary of the Invention

[0007] To solve the above technical problems, the present invention provides a comfort compensation mechanism for the rear end of a seat cushion, which synchronously adjusts the support structure and angle of the rear end of the seat cushion when the seat is lowered from the high-lift position, effectively solving the problems of insufficient support at the rear end of the existing seat cushion, defects in ergonomic design, and structural stability problems, improving the fit between the rear end of the seat cushion and the human body, optimizing the pressure distribution, enhancing the structural stability, and thus significantly improving the sitting comfort and safety of users.

[0008] The technical solution adopted by the present invention to solve its technical problems is: a comfort compensation mechanism for the rear end of a seat cushion, comprising a seat cushion frame assembly and a compensation support assembly installed on the seat cushion frame assembly; the seat cushion frame assembly includes frame units on the left and right sides, a front cross tube and a rear cross tube arranged between the two frame units; the frame unit includes a base, a seat cushion side plate, and a front connecting plate; one end of the front connecting plate is hinged to the base, and the other end of the front connecting plate is rotatably sleeved on the front cross tube at the front end of the seat cushion side plate; the rear end of the seat cushion side plate is rotatably sleeved on the rear cross tube; the seat cushion frame assembly further includes a height adjustment mechanism; the height adjustment mechanism includes a height adjustment gear segment fixed to the rear cross tube, a gear cooperating with the height adjustment gear segment, and a driving mechanism fixed to the seat cushion side plate, and the output end of the driving mechanism is installed with the gear; the height adjustment gear segment is also hinged to the base; a rear connecting plate is also rotatably sleeved on the rear cross tube, and the bottom end of the rear connecting plate is hinged to the base; the compensation support assembly includes a compensation support cross tube; connecting side plates are rotatably sleeved on both sides of the compensation support cross tube, and one end of the connecting side plate away from the compensation support cross tube is rotatably sleeved on the front cross tube; a first connecting member is further arranged at one end of the compensation support cross tube close to the height adjustment gear segment; the first connecting member includes a first connecting plate and a second connecting plate; one end of the first connecting plate is rotatably sleeved on the compensation support cross tube, and the other end is hinged to one end of the second connecting plate; the other end of the second connecting plate is sleeved on the rear cross tube and fixed to the rear cross tube.

[0009] A second connecting member is further arranged at one end of the compensation support cross tube away from the height adjustment gear segment; the second connecting member includes a third connecting plate and a support block; the support block is generally C-shaped and is buckled on the upper and lower sides of the rear connecting plate through the C-shaped structure; one end of the third connecting plate is rotatably sleeved on the compensation support cross tube, and the other side is hinged to the support block.

[0010] The base is an electric slide rail, and the front connecting plate, the height adjustment gear segment, and the rear connecting plate are respectively hinged to a support on the mobile end of the electric slide rail.

[0011] The height adjustment gear segment includes a fan-shaped body fixed to the rear cross tube; tooth portions meshing with the gear are arranged on the arc surface at the front end of the fan-shaped body; a connecting portion extends from the bottom side at the front end of the fan-shaped body; the connecting portion is hinged to the base.

[0012] Advantages of the present invention: The comfort compensation mechanism for the rear end of the seat cushion of the present invention synchronously adjusts the support structure and angle of the rear end of the seat cushion when the seat is adjusted to a high or low position, effectively solving the problems of insufficient support at the rear end of the existing seat, ergonomic design defects, and structural stability problems, improving the fitting degree between the rear end of the seat cushion and the human body, optimizing the pressure distribution, enhancing the structural stability, and thus significantly improving the riding comfort and safety of users. Description of the Drawings

[0013] Figure 1 Stereoscopic schematic diagram of a comfort compensation mechanism for the rear end of a seat cushion in an embodiment;

[0014] Figure 2 Stereoscopic schematic diagram of a comfort compensation mechanism for the rear end of a seat cushion in an elevated state in an embodiment;

[0015] Figure 3 Stereoscopic schematic diagram of a seat cushion frame assembly of a comfort compensation mechanism for the rear end of a seat cushion in an embodiment;

[0016] Figure 4 Stereoscopic schematic diagram of a seat cushion frame assembly of a comfort compensation mechanism for the rear end of a seat cushion from another angle in an embodiment;

[0017] Figure 5 Stereoscopic schematic diagram of a compensation support assembly of a comfort compensation mechanism for the rear end of a seat cushion in an embodiment;

[0018] Figure 6 Stereoscopic schematic diagram of a second connecting member of a comfort compensation mechanism for the rear end of a seat cushion in an embodiment;

[0019] Figure 7 Stereoscopic schematic diagram of a height adjustment gear segment of a comfort compensation mechanism for the rear end of a seat cushion in an embodiment;

[0020] Figure 8 Front view schematic diagram of a comfort compensation mechanism for the rear end of a seat cushion in an embodiment;

[0021] Figure 9 Front view schematic diagram of a comfort compensation mechanism for the rear end of a seat cushion in an elevated state in an embodiment;

[0022] Figure 10 For Figure 8 A - A cross-sectional schematic diagram;

[0023] Figure 11 For Figure 9 B - B cross-sectional schematic diagram;

[0024] Figure 12 For Figure 8 C - C cross-sectional schematic diagram;

[0025] Figure 13 For Figure 9 D - D cross-sectional schematic diagram;

[0026] Figure 14 For Figure 8 E - E cross-sectional schematic diagram;

[0027] Figure 15 For Figure 9 F - F cross-sectional schematic diagram;

[0028] Among them, 1 - seat cushion frame assembly, 2 - compensation support assembly, 11 - base, 12 - seat cushion side plate, 13 - front connecting plate, 14 - front cross tube, 15 - rear cross tube, 16 - height adjustment mechanism, 17 - rear connecting plate, 111 - support, 161 - height adjustment gear segment, 162 - gear, 163 - drive mechanism, 1611 - fan - shaped body, 1612 - tooth part, 1613 - connecting part, 21 - compensation support cross tube, 22 - connecting side plate, 23 - first connecting piece, 24 - second connecting piece, 231 - first connecting plate, 232 - second connecting plate, 241 - third connecting plate, 242 - support block. Detailed implementation mode

[0029] To deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with the drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.

[0030] Embodiment

[0031] Please refer to Figures 1 to 15 As shown, this embodiment provides a comfort compensation mechanism for the rear end of a seat cushion, including a seat cushion frame assembly 1 and a compensation support assembly 2 installed on the seat cushion frame assembly 1; the seat cushion frame assembly 1 includes frame units on both left and right sides, a front cross tube 14 and a rear cross tube 15 arranged between the two frame units; the frame unit includes a base 11, a seat cushion side plate 12, and a front connecting plate 13; one end of the front connecting plate 13 is hinged to the base 11, and the other end of the front connecting plate 13 is rotatably sleeved on the front cross tube 14 at the front end of the seat cushion side plate 12; the rear end of the seat cushion side plate 12 is rotatably sleeved on the rear cross tube 15; the seat cushion frame assembly 1 further includes a height adjustment mechanism 16; the height adjustment mechanism 16 includes a height adjustment gear segment 161 fixed to the rear cross tube 15, a gear 162 cooperating with the height adjustment gear segment, and a drive mechanism 163 fixed to the seat cushion side plate 12, and the output end of the drive mechanism 163 is installed with the gear 162; the height adjustment gear segment 161 is also hinged to the base 11; a rear connecting plate 17 is also rotatably sleeved on the rear cross tube 15, and the bottom end of the rear connecting plate 17 is hinged to the base 11; the compensation support assembly 2 includes a compensation support cross tube 21; connecting side plates 22 are rotatably sleeved on both sides of the compensation support cross tube 21, and one end of the connecting side plate 22 away from the compensation support cross tube 21 is rotatably sleeved on the front cross tube 14; a first connecting piece 23 is further arranged at one end of the compensation support cross tube 21 close to the height adjustment gear segment 161; the first connecting piece 23 includes a first connecting plate 231 and a second connecting plate 232; one end of the first connecting plate 231 is rotatably sleeved on the compensation support cross tube 21 and the other end is hinged to one end of the second connecting plate 232; the other end of the second connecting plate 232 is sleeved on the rear cross tube 15 and fixed to the rear cross tube 15.

[0032] Refer to Figure 5 and Figure 6 As shown, the compensation support transverse tube 21 is further provided with a second connecting member 24 at one end away from the height adjustment gear fan 161; the second connecting member 24 includes a third connecting plate 241 and a support block 242; the support block 242 is generally C-shaped, and is buckled on the upper and lower sides of the rear connecting plate 17 through a C-shaped structure; one end of the third connecting plate 241 is rotatably mounted on the compensation support transverse tube 21, and the other side is hinged to the support block 242.

[0033] Refer to Figure 10 and Figure 12 As shown, the base 11 is an electric slide rail, and the front connecting plate 13, the height adjustment gear fan 161, and the rear connecting plate 17 are respectively hinged to the support 111 fixed on the moving end of the electric slide rail.

[0034] Refer to Figure 7 and Figure 14 As shown, the height-adjusting gear fan 161 includes a fan-shaped body 1611, which is fixed to the rear cross tube 15; a tooth portion 1612 meshing with the gear 162 is provided on the arc surface of the front end of the fan-shaped body 1611; a connecting portion 1613 extends from the bottom side of the front end of the fan-shaped body; and the connecting portion 1613 is hinged to the base 11.

[0035] Refer to Figures 10 to 15 As shown, the working principle of a seat cushion rear end comfort compensation mechanism of this embodiment is as follows:

[0036] Seat height adjustment process: the driving mechanism drives the gear to rotate, and the gear toggles the height adjustment gear fan to flip the front side of the height adjustment gear fan downward, so that the right side panel of the seat cushion rises under the linkage cooperation of the right front connecting plate and the height adjustment gear fan, while the left side panel of the seat cushion rises under the linkage cooperation of the front cross tube, the rear cross tube, the left front connecting plate and the rear connecting plate; synchronously, since the height adjustment gear fan is fixedly connected to the rear cross tube, the rear cross tube rotates synchronously with the rotation of the height adjustment gear fan, and the rear cross tube also drives the second connecting plate fixed thereto to rotate, compensating for the right side of the support cross tube through the second connecting plate The second connecting plate rotates and rises under the linkage cooperation of the first connecting plate and the right connecting side plate. At the same time, the rear connecting plate changes the angle with the base as the left side seat cushion side plate rises, thereby driving the support block to rise. Under the linkage cooperation of the left side connecting side plate and the third connecting plate, the compensation support cross tube rises as a whole. The compensation support cross tube obtains stable support through the cooperation of the first connecting plate, the second connecting plate and the rear cross tube, and through the cooperation of the third connecting plate, the support block and the rear connecting plate. In the process of the seat cushion frame assembly rising, the rising amplitude of the compensation support cross tube is smaller than the rising amplitude of the rear cross tube.

[0037] Seat lowering process: the driving mechanism drives the gear to rotate, and the gear toggles the height adjustment gear fan, so that the front side of the height adjustment gear fan flips upward, and then the right seat cushion side panel is lowered under the linkage cooperation of the right front connecting plate and the height adjustment gear fan, while the left seat cushion side panel is lowered under the linkage cooperation of the front cross tube, the rear cross tube, the left front connecting plate and the rear connecting plate; synchronously, since the height adjustment gear fan is fixedly connected to the rear cross tube, the rear cross tube rotates synchronously with the rotation of the height adjustment gear fan, and the rear cross tube also drives the second connecting plate fixed thereto to rotate, compensating for the right side of the support cross tube through the second connecting plate The second connecting plate rotates and is lowered under the linkage cooperation of the first connecting plate and the connecting side plate on the right. At the same time, the rear connecting plate changes the angle with the base as the left seat cushion side plate is lowered, thereby driving the support block to lower. Under the linkage cooperation of the left connecting side plate and the third connecting plate, the compensating support cross tube is lowered as a whole, and the compensating support cross tube is firmly supported through the cooperation of the first connecting plate, the second connecting plate and the rear cross tube and through the cooperation of the third connecting plate, the support block and the rear connecting plate. In the process of lowering the seat cushion frame assembly, the lowering amplitude of the compensating support cross tube is smaller than that of the rear cross tube.

[0038] A seat cushion rear end comfort compensation mechanism of the present embodiment, when the seat cushion frame assembly is lowered in height, the compensation support cross tube of the compensation support assembly is automatically lowered in height by a small amount relative to the rear cross tube; thereby, it is more in line with the changes in human body posture when the seat height is lowered, improves the fit between the rear end of the seat cushion and the human body, makes the pressure distribution of the human body on the seat more uniform, and at the same time, enhances the structural stability; significantly improves the user's riding comfort and safety; at the same time, a seat cushion rear end comfort compensation mechanism of the present embodiment has a simple structure and is easy to be integrated into the design of existing car seats.

[0039] The above embodiments should not limit the present invention in any way, and any technical solutions obtained by equivalent replacement or equivalent conversion shall fall within the protection scope of the present invention.

Claims

1. A seat cushion rear end comfort compensation mechanism, characterized in that: It comprises a seat cushion frame assembly and a compensating support assembly installed on the seat cushion frame assembly; the seat cushion frame assembly comprises frame units on the left and right sides, a front transverse tube and a rear transverse tube arranged between the two frame units; the frame unit comprises a base, a seat cushion side plate, and a front connecting plate; one end of the front connecting plate is hinged to the base, and the other end of the front connecting plate and the front end of the seat cushion side plate are rotatably mounted on the front transverse tube; the rear end of the seat cushion side plate is rotatably mounted on the rear transverse tube; the seat cushion frame assembly also comprises a height adjustment mechanism; the height adjustment mechanism comprises a height adjustment gear fan fixed to the rear transverse tube, a gear matched with the height adjustment gear fan, and a driving mechanism fixed to the seat cushion side plate, and the output end of the driving mechanism is installed Gear; the height-adjusting gear fan is also hinged to the base; a rear connecting plate is rotatably mounted on the rear transverse tube, and the bottom end of the rear connecting plate is hinged to the base; the compensation support assembly includes a compensation support transverse tube; connecting side plates are rotatably mounted on both sides of the compensation support transverse tube, and the end of the connecting side plate away from the compensation support transverse tube is rotatably mounted on the front transverse tube; the compensation support transverse tube is also provided with a first connecting member at the end close to the height-adjusting gear fan; the first connecting member includes a first connecting plate and a second connecting plate; one end of the first connecting plate is rotatably mounted on the compensation support transverse tube, and the other end is hinged to one end of the second connecting plate; the other end of the second connecting plate is mounted on the rear transverse tube and fixed to the rear transverse tube.

2. A seat cushion rear end comfort compensation mechanism according to claim 1, characterized in that: A second connecting member is also provided at the end of the compensation support transverse tube away from the height adjustment gear fan; the second connecting member includes a third connecting plate and a support block; the support block is generally C-shaped, and is buckled on the upper and lower sides of the rear connecting plate through a C-shaped structure; one end of the third connecting plate is rotatably mounted on the compensation support transverse tube, and the other side is hinged to the support block.

3. A seat cushion rear end comfort compensation mechanism according to claim 1, characterized in that: The base is an electric slide rail, and the front connecting plate, the height adjustment gear fan and the rear connecting plate are respectively hinged to the support fixed on the moving end of the electric slide rail.

4. A seat cushion rear end comfort compensation mechanism according to any one of claims 1 to 3, characterized in that: The height-adjusting gear fan comprises a fan-shaped body, which is fixed to the rear transverse tube; a toothed portion meshing with the gear is arranged on the arc surface at the front end of the fan-shaped body; a connecting portion extends from the bottom side of the front end of the fan-shaped body; and the connecting portion is hinged to the base.

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