WO2023221585A1

WO2023221585A1 - Seat back angle compensation mechanism

Info

Publication number: WO2023221585A1
Application number: PCT/CN2023/077556
Authority: WO
Inventors: 宋海龙; 龙勇; 居成效
Original assignee: 延锋国际汽车技术有限公司
Priority date: 2022-05-18
Filing date: 2023-02-22
Publication date: 2023-11-23
Also published as: CN117125022A

Abstract

A seat back angle compensation mechanism, comprising: a retractor (100), a sensor compensation mechanism (200), a seat cushion angle sensing inhaul cable (710), a base (720) fixed on a seat cushion framework (500), a first connecting rod hingedly connected to the base (720), and a first spring (740). When the seat cushion framework (500) is subjected to angle adjustment, an angle change of the seat cushion framework (500) is converted into a linear distance change by means of a mechanical angle mechanism on the seat cushion framework (500), the linear distance change is converted into an angle change by means of the seat cushion angle sensing inhaul cable (710), and then the position of the sensor compensation mechanism (200) is adjusted by means of a mechanical mechanism, so as to ensure that a gravity sensing block on the retractor (100) is located at a working position. When the backrest is adjusted, the seat back angle compensation mechanism does not affect the compensation function of the sensor compensation mechanism of the retractor.

Description

A kind of seat angle compensation mechanism

Technical field

The present invention relates to the technical field of seats, and in particular to a seat angle compensation mechanism.

Background technique

Referring to Figure 1, the seat belt device with its own sensor compensation mechanism used in the current ABTS seat includes a retractor 100, a sensor compensation mechanism 200, a seat belt 300 and a seat belt socket (not shown in the figure). Referring to Figures 2 to 5, the retractor 100 is installed on the backrest frame 400. One end of the seat belt 300 is retracted in the retractor 100, and the other end is fixed on one side of the seat cushion frame 500 through the seat belt fixing component 310. The seat belt socket is fixed on the other side of the seat cushion frame 500 . During use, the seat belt pin 320 on the seat belt 300 is inserted into the seat belt socket.

The sensor compensation mechanism 200 is installed at the hinge of the backrest frame 400 and the seat cushion frame 500. It includes a rotating part 210, a fixed part 220 and a fixed part compensation piece 230. The fixed part 220 is installed on the backrest frame 400, and the rotating part 210 passes through the fixed part. The compensation piece 230 is installed on the seat cushion frame 500. The fixed part 220 is connected through the retractor cable 221. The rotating part 210 follows the rotation of the backrest frame and rotates concentrically with respect to the fixed part 220. The fixed part 220 slides relative to the fixed part compensation piece 230. The retractor cable 221 compensates the retractor 100, and its working principle can be found in the safety belt device disclosed in CN111801251A.

Specifically referring to Figures 4 and 5, when the backrest frame 400 is adjusted forward, it is equivalent to the backrest frame 400 rotating relative to the seat cushion frame 500. For example, the backrest frame 400 is adjusted forward by 15° relative to the seat cushion frame 500. At this time, the sensor compensation mechanism 200 The rotating part 210 also rotates 15° following the backrest frame 400, reducing the Θ angle by 15°, so that the safety belt 300 in the retractor 100 can be used normally.

See Figures 6 and 7, but when the seat belt device with its own sensor compensation mechanism used in the ABTS seat is applied to a zero-pressure seat with ABTS function, there are the following problems:

When adjusting the zero-pressure function, when the seat cushion frame 500 and the backrest frame 400 are adjusted backward together, since there is no relative rotation between the backrest frame 400 and the seat cushion frame 500, the sensor compensation mechanism 200 will not compensate the retractor 100 at this time. function, it will cause the retractor 100 to be unable to work, causing the retractor to A 100 seat belt worth 300 cannot be used.

In order to solve the above technical problems, some solutions currently use a seat belt device with a motor compensation mechanism 600 in the ABTS seat (see Figure 8). The belt motor compensation mechanism 600 compensates the retractor 100 through the retractor cable 610. Its working principle is: when adjusting the backrest or zero pressure adjustment, the angle of the retractor will change. At this time, the belt motor compensation mechanism The module in 600 calculates the rotation angle of the drive motor in the motor compensation mechanism 600, and then compensates the retractor 100 through the retractor cable 610, so that the safety belt 300 of the retractor 100 can be pulled out normally.

However, the seat belt device with the motor compensation mechanism 600 has the following problems:

1) The compensation mechanism 600 with motor has a complex structure, and it must cooperate with module control to compensate. The module needs to calculate the adjustment angle of the backrest in real time so that the retractor can work normally, which places high requirements on the seat.

2) All adjustments must be electric adjustments, and the motor must have a countable function, such as a ripple motor or a Hall motor, etc.

Therefore, the seat belt device with the motor compensation mechanism 600 has problems of complicated structure and control, resulting in high cost.

Contents of the invention

In view of the above-mentioned existing deficiencies, one of the purposes of the present invention is to provide a method that can detect the rotation angle of the cushion frame and feed back the detected rotation angle of the cushion frame to the sensor compensation mechanism in real time, and through the sensor compensation mechanism Seat angle compensation mechanism that compensates the retractor.

In view of the above-mentioned existing deficiencies, the second object of the present invention is to provide a device that can detect the rotation angles of the remaining rotatable parts on the backrest frame and real-time detect the rotation angles of the remaining rotatable parts on the backrest frame. The rotation angle is fed back to the sensor compensation mechanism, and the seat angle compensation mechanism compensates the retractor through the sensor compensation mechanism.

In view of the above-mentioned existing deficiencies, the third object of the present invention is to provide a method that can detect the rotation angles of the remaining rotatable parts on the backrest frame and the rotation angle of the seat cushion frame and real-time detect the detected rotation angles on the backrest frame. The rotation angle of the remaining rotatable parts and the rotation angle of the seat cushion frame are fed back to the sensor compensation mechanism, and the seat angle compensation mechanism compensates the retractor through the sensor compensation mechanism.

In order to achieve one of the above-mentioned objects of the invention, the seat angle compensation mechanism of the present invention includes:

Retractor, which is installed on the back frame of the seat;

The sensor compensation mechanism is installed at the hinge of the backrest frame and the seat cushion frame. It includes a rotating part, a fixed part and a fixed part compensation piece. The fixed part is installed on the backrest frame, and the rotating part is installed on the backrest frame through the fixed part compensation piece. On the seat cushion frame, the fixed part is connected through the retractor cable. The rotating part follows the rotation of the backrest frame and rotates concentrically with respect to the fixed part. The fixed part slides relative to the fixed part compensation piece, and the retractor is compensated by the retractor cable; It is characterized by: also including:

A cushion angle sensing cable. The cushion angle sensing cable includes a cushion angle sensing cable sleeve and a cushion angle sensing cable line passing through the cushion angle sensing cable sleeve. The cushion angle sensing cable sleeve The first end of the tube is fixed on the cushion bracket, the first end of the cushion angle sensing cable is fixed on the cushion frame, and the cushion frame is hinged on the cushion bracket;

A base fixed on the seat cushion frame, the second end of the seat cushion angle sensing cable sleeve is fixedly connected to the base;

A first connecting rod is hinged on the base, and the rotation center of the first connecting rod is coaxial with the rotation center of the backrest frame; the rotating part of the sensor compensation mechanism is connected to the fixed part compensation piece through the fixed part. The first connecting rod is connected, and the second end of the seat cushion angle sensing cable is fixedly connected to the first connecting rod;

A first spring, one end of the first spring hooks the base, and the other end hooks the first connecting rod.

In a preferred embodiment of the present invention, a first hole is provided in the rotation center of the backrest frame, a second hole is provided in the seat cushion frame, and a third hole is provided in the base. A fourth hole is opened in the rotation center of the first link, and a first rivet is passed through the first hole, the middle hole, the second hole, the third hole and the fourth hole of the sensor compensation mechanism and then anchored, so that The rotation of the backrest frame, the seat cushion frame, the sensor compensation mechanism, the first link and the base are installed together.

In a preferred embodiment of the present invention, the first connecting rod is a triangular connecting rod, the first angle of the triangular connecting rod constitutes the rotation center of the first connecting rod, and the second angle of the triangular connecting rod The second end of the cushion angle sensing cable is fixedly connected to the cushion angle sensing cable, and the third corner of the triangular connecting rod is connected to the other end of the spring.

In a preferred embodiment of the present invention, an opening is provided at a position of the triangular connecting rod close to the third corner. A first socket, the compensation piece of the fixed part of the sensor compensation mechanism passes through the first socket; a waist-shaped position is provided at the position where the compensation piece of the fixed part of the sensor compensation mechanism passes through the first socket. hole, the second end of the seat cushion angle sensing cable is fixed on the second corner of the triangular connecting rod through a cable fixing screw, and the cable fixing bolt passes through the waist-shaped hole.

In order to achieve the second object of the invention, the seat angle compensation mechanism of the present invention has a backrest frame that includes a lower backrest frame and an upper backrest frame, and the upper backrest frame is hinged on the upper part of the lower backrest frame; it also includes:

A retractor, the retractor is installed on the upper backrest frame;

The sensor compensation mechanism is installed at the hinge of the lower backrest frame and the seat cushion frame. It includes a rotating part, a fixed part and a fixed part compensation piece. The fixed part is installed on the backrest frame, and the rotating part is installed through the fixed part compensation piece. On the seat cushion frame, the fixed part is connected through the retractor cable. The rotating part follows the rotation of the backrest frame and rotates concentrically with respect to the fixed part. The fixed part slides relative to the compensation piece of the fixed part, and the retractor is compensated by the retractor cable. ; It is characterized by: also including:

An upper backrest frame angle sensing cable. The upper backrest frame angle sensing cable includes an upper backrest frame angle sensing cable sleeve and an upper backrest frame angle sensing cable that passes through the upper backrest frame angle sensing cable sleeve. The first end of the upper backrest frame angle sensing cable sleeve is fixed on the upper part of the lower backrest frame, and the first end of the upper backrest frame angle sensing cable sleeve is fixed on the upper backrest frame ;

A base fixed on the seat cushion frame, the second end of the angle sensing cable sleeve of the upper backrest frame is fixedly connected to the base;

A second connecting rod is hinged on the base, and the rotation center of the second connecting rod is coaxial with the rotation center of the backrest frame; the rotating part of the sensor compensation mechanism is connected to the fixed part compensation piece through the fixed part. The second connecting rod is connected, and the second end of the upper backrest frame angle sensing cable is fixedly connected to the second connecting rod;

A second spring, one end of the second spring hooks the base, and the other end hooks the second connecting rod.

In a preferred embodiment of the present invention, a first hole is provided in the rotation center of the lower backrest frame, a second hole is provided in the seat cushion frame, and a third hole is provided in the base. A fifth hole is provided in the rotation center of the second link, and a second rivet is used to pass through the first hole, the middle hole, the second hole, the third hole and the fifth hole of the sensor compensation mechanism and then anchor, The backrest frame, seat cushion frame, sensor compensation mechanism, second link and base are installed together.

In a preferred embodiment of the present invention, the second link is in the shape of a long strip, the rotation center of the second link is located at the center of the long second link, and the angle of the upper backrest frame is sensitive to tension. The second end of the cable is fixedly connected to the upper end of the elongated second connecting rod; the other end of the second spring hooks the lower end of the elongated second connecting rod.

In a preferred embodiment of the present invention, a second insertion hole is opened between the rotation center of the elongated second link and the lower end of the elongated second link, and the fixed part of the sensor compensation mechanism compensates The piece passes through the second jack hole; a waist-shaped hole is opened at the position where the compensation piece of the fixed part of the sensor compensation mechanism passes through the second jack hole, and a second connecting rod bolt is passed through it to open a long hole. After tightening the bolt hole and waist-shaped hole at the lower end of the strip-shaped second connecting rod with the second connecting rod nut, the fixed part of the sensor compensation mechanism can be connected to the second connecting rod through the fixed part compensation piece. Connecting rod.

In order to achieve the third object of the invention, in the seat angle compensation mechanism of the present invention, the backrest frame includes a lower backrest frame and an upper backrest frame, and the upper backrest frame is hinged on the upper part of the lower backrest frame; it also includes:

A retractor, the retractor is installed on the upper backrest frame;

A cushion angle sensing cable, the cushion angle sensing cable includes a cushion angle sensing cable sleeve and a cushion angle sensing cable line passing through the cushion angle sensing cable sleeve. The first end of the cushion angle sensing cable sleeve is fixed on the cushion bracket, and the first end of the cushion angle sensing cable sleeve is fixed on the cushion bracket. The end is fixed on the cushion frame, and the cushion frame is hinged on the cushion bracket;

A third link hinged on the base, the rotation center of the third link being coaxial with the rotation center of the second link and the rotation center of the lower backrest frame; the upper backrest frame The second end of the angle sensing cable sleeve is fixedly connected to the third connecting rod, and the second end of the seat cushion angle sensing cable is fixedly connected to the third connecting rod;

a third spring, one end of the third spring is hooked on the base, and the other end is hooked on the third connecting rod;

A fourth spring, one end of the fourth spring is hooked on the third connecting rod, and the other end is hooked on the second connecting rod.

In a preferred embodiment of the present invention, a first hole is provided in the rotation center of the lower backrest frame, a second hole is provided in the seat cushion frame, and a third hole is provided in the base. The rotation center of the second link is provided with a fifth hole, and the rotation center of the third link is provided with six holes. A third rivet is used to pass through the first hole and the middle hole of the sensor compensation mechanism. , the second hole, the third hole, the fifth hole and the second six hole are rear anchored, so that the lower backrest frame, the seat cushion frame, the sensor compensation mechanism, the second link, the third link and the base are installed together.

In a preferred embodiment of the present invention, the second link is in the shape of a long strip, the rotation center of the second link is located at the center of the long second link, and the angle of the upper backrest frame is sensitive to tension. The second end of the cable is fixedly connected to the upper end of the elongated second connecting rod; the other end of the fourth spring hooks the lower end of the elongated second connecting rod.

In a preferred embodiment of the present invention, a second insertion hole is opened between the rotation center of the elongated second link and the lower end of the elongated second link, and the fixed part of the sensor compensation mechanism compensates piece Pass through the second jack hole; a waist-shaped hole is opened at the position where the compensation piece of the fixed part of the sensor compensation mechanism passes through the second jack hole, and a second connecting rod bolt is passed through the long strip. After tightening the bolt hole and waist-shaped hole at the lower end of the second connecting rod with the second connecting rod nut, the rotating part of the sensor compensation mechanism can be connected to the second connecting rod through the fixed part compensation piece. Rod connection.

In a preferred embodiment of the present invention, the third link is a Y-shaped link, the center of the Y-shaped link constitutes the rotation center of the third link, and the upper backrest frame angle sensing cable The second end of the sleeve is fixedly connected to the first end of the Y-shaped connecting rod, the second end of the cushion angle sensing cable is fixedly connected to the second end of the Y-shaped connecting rod, and the fourth One end of the spring is hooked on the third end of the Y-shaped connecting rod.

The basic principle of the above-mentioned seat angle compensation mechanism is: when the angle of the seat cushion frame or/and the upper backrest frame, such as the shoulder frame, is adjusted, the seat cushion is adjusted through the mechanical angle mechanism on the seat cushion frame or/and the upper backrest frame, such as the shoulder frame. The angle changes of the frame or/and the upper backrest frame are converted into linear distance changes. The linear distance changes are converted into angle changes through the seat cushion angle sensing cable or/and the upper backrest frame angle sensing cable, and then the sensor compensation is adjusted through the mechanical mechanism. The position of the mechanism ensures that the gravity sensing block on the retractor is in the working position. When the backrest is simply adjusted, the above-mentioned seat angle compensation mechanism does not affect the compensation function of the sensor compensation mechanism of the retractor.

The above-mentioned seat angle compensation mechanism can be superimposed. When adding another adjustment function to supplement the retractor sensor position, this principle can be used to add another set of compensation mechanisms to ensure that the gravity sensing block on the retractor is in the working position.

Description of the drawings

Figure 1 is a schematic structural diagram of the seat belt device with its own sensor compensation mechanism used in the current ABTS seat.

Figure 2 is a schematic diagram of the installation of the seat belt device with its own sensor compensation mechanism used in the current ABTS seat.

FIG. 3 is a schematic diagram of the state of the sensor compensation mechanism shown in FIG. 2 .

Figure 4 is a schematic diagram of the state of the seat belt device with its own sensor compensation mechanism used in the current ABTS seat when the backrest is adjusted.

FIG. 5 is a schematic diagram of the state of the sensor compensation mechanism shown in FIG. 4 .

Figure 6 is a schematic diagram of the state where the seat belt device with its own sensor compensation mechanism used in the current ABTS seat is applied to the zero-pressure seat.

FIG. 7 is a schematic diagram of the state of the sensor compensation mechanism shown in FIG. 6 .

Figure 8 is a schematic structural diagram of the motor compensation mechanism.

Figure 9 is a schematic diagram of the installation of the seat angle compensation mechanism in Embodiment 1 of the present invention.

FIG. 10 is an enlarged schematic diagram of position I in FIG. 9 .

Figure 11 is an enlarged schematic view of position I in Figure 9 (with the base removed).

Figure 12 is a schematic structural diagram of the sensor compensation mechanism used in the seat angle compensation mechanism in Embodiment 1 of the present invention.

Figure 13 is an exploded schematic diagram of the seat angle compensation mechanism in Embodiment 1 of the present invention.

Figure 14 is a schematic diagram of the assembly between the base and the first link in the seat angle compensation mechanism according to Embodiment 1 of the present invention (viewed from one direction).

Figure 15 is a schematic diagram of the assembly between the base and the first link in the seat angle compensation mechanism according to Embodiment 1 of the present invention (viewed from another direction).

Figure 16 is a schematic diagram of the base structure of the seat angle compensation mechanism in Embodiment 1 of the present invention.

Figure 17 is a schematic structural diagram of the first link in the seat angle compensation mechanism according to Embodiment 1 of the present invention.

Figure 18 shows the first end of the seat cushion angle sensing cable sleeve, the first end of the seat cushion angle sensing cable line and the first connecting rod in the seat angle compensation mechanism of Embodiment 1 of the present invention without angle adjustment on the seat cushion frame. status diagram.

Figure 19 shows the second end of the seat cushion angle sensing cable sleeve, the second end of the seat cushion angle sensing cable line and the seat cushion frame in the seat angle compensation mechanism of Embodiment 1 of the present invention when the angle of the seat cushion frame is not adjusted. Status diagram.

Figure 20 shows the first end of the seat cushion angle sensing cable sleeve, the first end of the seat cushion angle sensing cable line and the first connecting rod in the seat angle compensation mechanism of Embodiment 1 of the present invention when the seat cushion frame is adjusting the angle. status diagram.

Figure 21 shows the state of the second end of the seat cushion angle sensing cable sleeve, the second end of the seat cushion angle sensing cable and the seat cushion frame when the angle of the seat cushion frame is adjusted in the seat angle compensation mechanism of Embodiment 1 of the present invention. Schematic diagram.

Figure 22 shows the seat cushion angle sensing cable sleeve in the seat angle compensation mechanism according to Embodiment 1 of the present invention. Schematic diagram of the first end of the seat cushion angle sensing cable and the first link when the backrest is adjusted in angle (viewed from one direction).

Figure 23 shows the first end of the seat cushion angle sensing cable sleeve, the first end of the seat cushion angle sensing cable line and the first link in the seat angle compensation mechanism of Embodiment 1 of the present invention when the backrest is adjusted in angle. State diagram (looking from the other direction).

Figure 24 is a schematic diagram of the seat angle compensation mechanism in the initial state according to Embodiment 1 of the present invention.

Fig. 25 is an enlarged schematic diagram of position I in Fig. 24.

Figure 26 is a schematic diagram of the state of the seat angle compensation mechanism when the backrest is monotonous in Embodiment 1 of the present invention.

Figure 27 is an enlarged schematic diagram of position I in Figure 26.

Figure 28 is a schematic diagram of the state of the seat angle compensation mechanism when adjusting the seat cushion angle in Embodiment 1 of the present invention.

Fig. 29 is an enlarged schematic diagram of position I in Fig. 28.

Figure 30 is a schematic diagram of the installation of the seat angle compensation mechanism in Embodiment 2 of the present invention.

Figure 31 is a schematic diagram of the installation of the seat angle compensation mechanism in Embodiment 2 of the present invention (with the base removed).

Figure 32 is an exploded schematic view of the seat angle compensation mechanism in Embodiment 2 of the present invention.

Figure 33 is a second exploded schematic view of the seat angle compensation mechanism in Embodiment 2 of the present invention.

Fig. 34 is an enlarged schematic diagram of position I in Fig. 31.

Figure 35 is a schematic structural diagram of the upper backrest frame angle sensing cable in the seat angle compensation mechanism in Embodiment 2 of the present invention.

Figure 36 is a schematic diagram of the assembly of the base and the second link in the seat angle compensation mechanism according to Embodiment 2 of the present invention.

Figure 37 is a schematic diagram of the base structure of the seat angle compensation mechanism in Embodiment 2 of the present invention.

Figure 38 is a schematic structural diagram of the second link in the seat angle compensation mechanism in Embodiment 2 of the present invention.

Figure 39 is a schematic diagram of the seat angle compensation mechanism in the initial state according to Embodiment 2 of the present invention.

Fig. 40 is an enlarged schematic diagram of position I in Fig. 39.

Figure 41 is a schematic diagram of the state of the seat angle compensation mechanism when the backrest is monotonous in Embodiment 2 of the present invention.

Figure 42 is an enlarged schematic diagram of position I in Figure 41.

Figure 43 is a schematic diagram of the installation of the seat angle compensation mechanism in Embodiment 3 of the present invention.

Figure 44 is a schematic diagram of the installation of the seat angle compensation mechanism in Embodiment 3 of the present invention (with the base removed).

Figure 45 is an exploded schematic view of the seat angle compensation mechanism in Embodiment 3 of the present invention.

Figure 46 is a second exploded schematic view of the seat angle compensation mechanism in Embodiment 3 of the present invention.

Figure 47 is an enlarged schematic diagram of position I in Figure 44.

Figure 48 is a schematic structural diagram of the upper backrest frame angle sensing cable in the seat angle compensation mechanism in Embodiment 3 of the present invention.

Figure 49 is a schematic diagram of the assembly between the base and the second link and the third link in the seat angle compensation mechanism in Embodiment 3 of the present invention.

Figure 50 is a schematic diagram of the base structure of the seat angle compensation mechanism in Embodiment 3 of the present invention.

Figure 51 is a schematic structural diagram of the second link in the seat angle compensation mechanism in Embodiment 3 of the present invention.

Figure 52 is a schematic structural diagram of the third link in the seat angle compensation mechanism in Embodiment 3 of the present invention.

Figure 53 is a schematic diagram of the seat angle compensation mechanism in the initial state according to Embodiment 3 of the present invention.

Figure 54 is an enlarged schematic diagram of position I in Figure 53.

Figure 55 is a schematic diagram of the state of the seat angle compensation mechanism during seat cushion adjustment according to Embodiment 1 of the present invention.

Figure 56 is an enlarged schematic diagram of position I in Figure 41.

Figure 57 is a schematic diagram of the state of the seat angle compensation mechanism when the backrest is monotonous in Embodiment 3 of the present invention.

Fig. 58 is an enlarged schematic diagram of position I in Fig. 57.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Example 1

Referring to Figures 9 to 23, the seat angle compensation mechanism shown in the figures includes a seat, a retractor 100, a sensor compensation mechanism 200, a seat belt 300 and a seat belt socket (not shown in the figures).

The seat includes a backrest frame 400 and a seat cushion frame 500. The lower end of the backrest frame 400 is hinged on the upper end of the seat cushion frame 500. How to hinge the lower end of the backrest frame 400 on the upper end of the seat cushion frame 500, those skilled in the art can refer to the safety belt device disclosed in CN111801251A, and will not be described in detail here.

For a zero-pressure seat, the rear side of the cushion frame 500 is hinged on the rear side of the cushion bracket 510, so that the angle of the cushion frame 500 can be adjusted to achieve zero-pressure adjustment of the seat. As for how the seat cushion frame 500 is hinged on the seat cushion bracket 510, this is an existing technology for those skilled in the art, and is no different from the existing zero-pressure seats. Due to space limitations, the details will not be described here.

The retractor 100 is installed on the backrest frame 400. The specific installation position and structure can be found in the safety belt device disclosed in CN111801251A. One end of the seat belt 300 is retracted in the retractor 100, the other end is fixed on one side of the seat cushion frame 500 through the seat belt fixing component 310, and the seat belt socket is fixed on the other side of the seat cushion frame 500. During use, the seat belt pin 320 on the seat belt 300 is inserted into the seat belt socket.

The sensor compensation mechanism 200 is installed at the hinge of the backrest frame 400 and the seat cushion frame 500. It includes a rotating part 210, a fixed part 220 and a fixed part compensation piece 230. The fixed part 220 is installed on the backrest frame 400, and the rotating part 210 passes through the fixed part. The compensation piece 230 is installed on the seat cushion frame 500. The fixed part 220 is connected through the retractor cable 221. The rotating part 210 follows the rotation of the backrest frame and rotates concentrically with respect to the fixed part 220. The fixed part 220 slides relative to the fixed part compensation piece 230. The retractor cable 221 compensates for the retractor 100 . The specific installation position and structure of the sensor compensation mechanism 200 can be found in the seat belt device disclosed in CN111801251A.

The seat angle compensation mechanism of this embodiment also includes: a seat cushion angle sensing cable 710, a base 720, a first link and a first spring 740.

The seat cushion angle sensing cable 710 includes a seat cushion angle sensing cable sleeve 711 and a seat cushion angle sensing cable line 712 passing through the seat cushion angle sensing cable sleeve 711 .

In order to measure the flip angle of the cushion frame 500, a cushion angle sensing cable fixing bracket 520 is provided on one side of the cushion frame 500. The cushion angle sensing cable fixing bracket 520 is provided on the same side of the cushion bracket 510 and the cushion frame 400. A seat cushion angle sensing cable wire fixing bracket 511 is provided on one side.

The first end 711a of the seat cushion angle sensing cable sleeve 711 is fixed on the seat cushion angle sensing cable fixing bracket 520, and the first end 712a of the seat cushion angle sensing cable 712 is fixed on the seat cushion angle sensing cable fixing bracket 511. In this way, when the cushion frame 500 is flipped relative to the cushion bracket 510 and the angle of the cushion frame 500 is adjusted, the cushion angle sensing cable fixing bracket 520 on the cushion frame 500 and the cushion angle sensing cable fixing bracket 511 on the cushion bracket 510 are used. The mechanical angle formed by The mechanism converts the angle change of the seat cushion frame 500 into the linear distance change of the seat cushion angle sensing cable 712.

Two mounting holes 721 are opened on the base 720, and two screws 721a passing through the two mounting holes 721 on the base 720 are used to fix the seat cushion frame 500. The second end 711b of the seat cushion angle sensing cable sleeve 711 is fixed at an appropriate position on the base 720.

The first link in this embodiment is a triangular link 730. The first angle 731 of the triangular link 730 constitutes the rotation center of the triangular link 730. The second angle 732 is connected with the second angle of the seat cushion angle sensing cable 712. Terminal 712b is fixedly connected.

A first hole 410 is provided in the rotation center of the backrest frame 400, a second hole 530 is provided in the seat cushion frame 500, and a third hole 722 is provided in the rotation center of the base 720 corresponding to the triangular connecting rod 730. A fourth hole 731a is opened in the first corner 731 of After anchoring, the backrest frame 400, the seat cushion frame 500, the sensor compensation mechanism 200, the triangular link 730 and the base 720 are installed together so that the rotation center of the triangular link 730 is hinged on the base 720, and at the same time, the triangular link 730 is The rotation center is coaxial with the rotation center of the backrest frame 400 .

One end of the first spring 740 in this embodiment is hooked at an appropriate position on the base 720 , and the other end is hooked on the third corner 733 of the triangular connecting rod 730 .

A first insertion hole 734 is opened in the triangular connecting rod 730 near the third corner 733, and the fixed part compensation piece 230 of the sensor compensation mechanism 200 passes through the first insertion hole 734; A waist-shaped hole 231 is opened through the first insertion hole 734, and the compensation piece fixing bolt 732a passes through the waist-shaped hole 231 to fix the third corner 733 of the triangular connecting rod 730 and the fixed part compensation piece 230 together. In this way, the linear distance change of the seat cushion angle sensing cable 712 can be converted into an angle change through the triangular connecting rod 730, and then the position of the sensor compensation mechanism 200 is adjusted through the fixed part compensation piece 230 to ensure that the gravity sensing block on the retractor 100 is in a working position.

The working principle of the seat angle compensation mechanism in this embodiment is as follows:

Referring to Figures 24 and 25, when the seat is in the original position, the cushion frame 500 does not rotate relative to the cushion bracket 510 to change the angle. At this time, the triangular connecting rod 730 cannot rotate under the action of the cushion angle sensing cable 712 and the first spring 740. Turn. The non-rotatable triangular connecting rod 730 is compensated by the fixed part. The compensation piece 230 makes the fixed part 220 of the sensor compensation mechanism 200 unable to rotate.

Referring to Figures 26 and 27, when the backrest frame 500 is adjusted individually, the triangular connecting rod 730 cannot rotate under the action of the seat cushion angle sensing cable 712 and the first spring 740. The non-rotatable triangular link 730 makes the fixed part 220 of the sensor compensation mechanism 200 non-rotatable through the fixed part compensation piece 230. Therefore, the fixed part 220 of the sensor compensation mechanism 200 is connected between the triangular link 730, the seat cushion angle sensing cable 712 and the third It is fixed under the action of a spring 740. When the backrest is adjusted, the rotating part 210 of the sensor compensation mechanism 200 may rotate relative to the fixed part 220 of the sensor compensation mechanism 200 . Realize the normal function of the seat belt device with its own sensor compensation mechanism used in the ABTS seat, and the seat belt 300 can be extracted normally.

Referring to Figures 28 and 29, when the cushion frame 500 rotates relative to the cushion bracket 510 to change its angle, the cushion angle sensing cable fixing bracket 520 on the cushion frame 500 pulls the cushion angle sensing cable 712. Since the cushion angle sensing cable The radii of the installation points of the first end 712a and the second end 712b of the line 712 are consistent, and the rotation angle of the cushion frame 500 can be 1:1 by pulling the triangular connecting rod 730. The rotating triangular connecting rod 730 overcomes the first After the resistance of the spring 740, the fixed part 220 of the sensor compensation mechanism 200 is rotated relative to the rotating part 210 of the sensor compensation mechanism 200 by a rotation angle equal to the rotation angle of the seat cushion frame 500, which is equivalent to the rotation part 210 of the sensor compensation mechanism 200 being able to rotate relative to the rotating part 210 of the sensor compensation mechanism 200. The fixed part 220 of the sensor compensation mechanism 200 rotates. Realize the normal function of the seat belt device with its own sensor compensation mechanism used in the ABTS seat, and the seat belt 300 can be extracted normally.

Example 2

Referring to Figures 30 to 38, the seat angle compensation mechanism shown in the figures includes a seat, a retractor 100, a sensor compensation mechanism 200, a seat belt 300 and a seat belt socket (not shown in the figures).

The seat includes a backrest frame 400a and a seat cushion frame 500. The backrest frame 400a of this embodiment includes a lower backrest frame 420a and an upper backrest frame 430a. The upper backrest frame 430a can be used as a shoulder frame, and its lower end is hinged on the upper part of the lower backrest frame 420a. How is the lower end of the upper backrest frame 430a hinged at the lower part? The upper end of the backrest frame 420a can be found by those skilled in the art from the existing technology, and will not be described again here.

The lower end of the lower backrest frame 420a is hinged on the upper end of the seat cushion frame 500. Those skilled in the art can refer to how the lower end of the lower backrest frame 420a is hinged on the upper end of the seat cushion frame 500. The safety belt device disclosed in CN111801251A will not be described in detail here.

The retractor 100 is installed on the upper backrest frame 430a. The specific installation position and structure can be found in the safety belt device disclosed in CN111801251A. One end of the seat belt 300 is retracted in the retractor 100, the other end is fixed on one side of the seat cushion frame 500 through the seat belt fixing component 310, and the seat belt socket is fixed on the other side of the seat cushion frame 500. During use, the seat belt pin 320 on the seat belt 300 is inserted into the seat belt socket.

The sensor compensation mechanism 200 is installed at the hinge of the lower backrest frame 420a and the seat cushion frame 500. It includes a rotating part 210, a fixed part 220 and a fixed part compensation piece 230. The fixed part 220 is installed on the backrest frame 400, and the rotating part 210 is fixed by The partial compensation piece 230 is installed on the seat cushion frame 500. The fixed part 220 is connected through the retractor cable 221. The rotating part 210 follows the rotation of the backrest frame and rotates concentrically with respect to the fixed part 220. The fixed part 220 slides relative to the fixed part compensation piece 230. The retractor 100 is compensated by the retractor cable 221 . The specific installation position and structure of the sensor compensation mechanism 200 can be found in the seat belt device disclosed in CN111801251A.

The seat angle compensation mechanism of this embodiment also includes: an upper backrest frame angle sensing cable 750, a base 720, a second link 760 and a second spring 770.

The upper backrest frame angle sensing cable 750 includes an upper backrest frame angle sensing cable sleeve 751 and an upper backrest frame angle sensing cable line 752 passing through the upper backrest frame angle sensing cable sleeve 751 .

An upper backrest frame angle sensing cable sleeve fixing bracket 421a is installed on the lower backrest frame 420a close to the upper backrest frame 430a, and an upper backrest frame angle sensing cable sleeve fixing bracket 431a is installed on a suitable position of the upper backrest frame 430a. The first end 751a of the upper backrest frame angle sensing cable sleeve 751 is fixed on the upper backrest frame angle sensing cable sleeve fixing bracket 421a, and the first end 752a of the upper backrest frame angle sensing cable sleeve 752 is fixed on the upper backrest frame. The angle sensing cable is fixed on the bracket 431a.

Two mounting holes 721 are provided on the base 720 , and two mounting holes 721 are passed through the base 720 to be fixed on the seat cushion frame 500 . The second end 751b of the upper backrest frame angle sensing cable sleeve 751 is fixed in place on the base 720.

The shape of the second connecting rod 760 in this embodiment is elongated. A first hole 422a is provided in the rotation center of the lower backrest frame 420a, a second hole 530 is provided in the seat cushion frame 500, and the base 720 A third hole 722 is provided at the rotation center of the long second connecting rod 760, and a fifth hole 761 is provided at the rotation center of the long second connecting rod 760, and a second rivet 780 is used to penetrate the second hole 761. After passing through the first hole 422a, the middle hole 240, the second hole 530, the third hole 722 and the fifth hole 761 of the sensor compensation mechanism 200, the lower backrest frame 420a, the seat cushion frame 500, the sensor compensation mechanism 200, and the strip are The second link 760 and the base 720 are installed together.

The rotation center of the elongated second link 760 is located at the center of the elongated second link 760 and is coaxial with the rotation center of the lower backrest frame 420a. The second end 751b of the upper backrest frame angle sensing cable sleeve 751 is fixedly connected to the appropriate position of the base 720. The second end 752b of the upper backrest frame angle sensing cable 752 is fixedly connected to the upper end 762 of the elongated second link 760.

One end of the second spring 770 is hooked at an appropriate position on the base 720 , and the other end is hooked on the lower end 763 of the elongated second connecting rod 760 .

A second insertion hole 764 is opened between the rotation center of the long second link 760 and the lower end 763 of the long second link 760, and the fixed part compensation piece 230 of the sensor compensation mechanism 200 passes through the second insertion hole 764. Two jack holes 764; a waist-shaped hole 231 is opened at the position where the compensation piece 230 of the fixed part of the sensor compensation mechanism 200 passes through the second jack hole 764, and a second connecting rod bolt 765 is passed through the long strip-shaped third hole 764. After tightening the bolt hole 766 and the waist-shaped hole 231 at the lower end of the second connecting rod 760 with the second connecting rod nut (not shown in the figure), the fixed part 220 of the sensor compensation mechanism 200 can pass through the fixed part compensation piece 230 Connected to the elongated second connecting rod 760 .

Referring to Figures 39 and 40, when the seat is in the original position, the upper backrest frame 430a does not rotate relative to the lower backrest frame 420a to change the angle. At this time, the elongated second link 760 moves the upper backrest frame angle sensing cable 752 Under the action of the second spring 770, it cannot rotate. The non-rotatable elongated second link 760 prevents the fixed part 220 of the sensor compensation mechanism 200 from rotating through the fixed part compensation piece 230 .

Referring to Figures 41 and 42, when the upper backrest frame 430a rotates relative to the lower backrest frame 420a and changes in angle, the upper backrest frame angle sensing cable sleeve fixing bracket 421a on the upper backrest frame 430a pulls the upper backrest frame angle sensing cable. Line 752, since the radii of the installation points of the first end 752a and the second end 752b of the upper backrest frame angle sensing cable line 752 are consistent, the rotation angle of the upper backrest frame 430a can be adjusted 1:1 by pulling the long strip. Second link 760 rotates, rotates After overcoming the resistance of the second spring 770, the elongated second link 760 causes the fixed part 220 of the sensor compensation mechanism 200 to rotate relative to the rotating part 210 of the sensor compensation mechanism 200 by an angle equal to the rotation of the upper backrest frame 430a. The rotation angle is equivalent to that the rotating part 210 of the sensor compensation mechanism 200 can rotate relative to the fixed part 220 of the sensor compensation mechanism 200 . Realize the normal function of the seat belt device with its own sensor compensation mechanism used in the ABTS seat, and the seat belt 300 can be extracted normally.

Example 3

Referring to Figures 43 to 52, the seat angle compensation mechanism shown in the figures is a combination of the seat angle compensation mechanism of Embodiment 1 and the seat angle compensation mechanism of Embodiment 2, which includes a seat, a retractor 100, The sensor compensation mechanism 200, the seat belt 300 and the seat belt socket (not shown in the figure).

The lower end of the lower backrest frame 420a is hinged on the upper end of the seat cushion frame 500. How to hinge the lower end of the lower backrest frame 420a on the upper end of the seat cushion frame 500, those skilled in the art can refer to the safety belt device disclosed in CN111801251A, which will not be described in detail here. .

The seat angle compensation mechanism of this embodiment also includes: upper backrest frame angle sensing cable 750, seat cushion angle sensing cable 710, base 720, second link 760, third link 790 and third spring 770a, fourth Spring 780a.

The first end 711a of the seat cushion angle sensing cable sleeve 711 is fixed on the seat cushion angle sensing cable fixing bracket 520, and the first end 712a of the seat cushion angle sensing cable 712 is fixed on the seat cushion angle sensing cable fixing bracket 511. In this way, when the cushion frame 500 is flipped relative to the cushion bracket 510 and the angle of the cushion frame 500 is adjusted, the cushion angle sensing cable fixing bracket 520 on the cushion frame 500 and the cushion angle sensing cable fixing bracket 511 on the cushion bracket 510 are used. The constituted mechanical angle mechanism converts the angle change of the cushion frame 500 into the linear distance change of the cushion angle sensing cable 712.

Two mounting holes 721 are provided on the base 720 , and two mounting holes 721 are passed through the base 720 to be fixed on the seat cushion frame 500 . The second end 711b of the seat cushion angle sensing cable sleeve 711 is fixed at an appropriate position on the base 720.

The shape of the second connecting rod 760 in this embodiment is elongated, and the rotation of the elongated second connecting rod 760 The center is located at the center of the elongated second connecting rod 760 . The third connecting rod 790 is a Y-shaped connecting rod. The center of the Y-shaped connecting rod constitutes the rotation center of the third connecting rod 790 .

A first hole 422a is provided in the rotation center of the lower backrest frame 420a, and a second hole 530 is provided in the seat cushion frame 500. The base 720 corresponds to the rotation center of the elongated second link 760 and the third link 790. A third hole 722 is provided in the rotation center, a fifth hole 761 is provided in the rotation center of the elongated second link 760, and one or six holes 791 are provided in the rotation center of the third link 790. The third rivet 790a passes through the first hole 422a, the middle hole 240, the second hole 530, the third hole 722, the fifth hole 761 and the second six holes 791 of the sensor compensation mechanism 200 and then is anchored, so that the lower backrest frame 420a rotates , the seat cushion frame 500, the sensor compensation mechanism 200, the second link 760, the third link 790 and the base 720 are installed together, and the rotation center of the long second link 760 and the rotation of the third link 790 are The center is coaxial with the rotation center of the upper backrest frame 430a.

The second end 751b of the upper backrest frame angle sensing cable sleeve 751 is fixedly connected to the Y-shaped connecting rod, that is, the first end 792 of the third link 790, and the second end 712b of the seat cushion angle sensing cable line 712 is connected to the Y-shaped connecting rod. The second end 793 of the rod, that is, the third connecting rod 790, is fixedly connected. The second end 752b of the upper backrest frame angle sensing cable 752 is fixedly connected to the upper end 762 of the elongated second link 760.

One end of the third spring 770a is hooked on the appropriate position of the base 720, and the other end is hooked on the third end 794 of the third link 790. One end of the fourth spring 780a is hooked on the third end 794 of the third link 790, and the other end is hooked on the upper end 762 of the elongated second link 760.

Referring to Figures 53 and 54, when the seat is in the original position, the upper backrest frame 430a does not rotate relative to the lower backrest frame 420a to change the angle, and the cushion frame 500 does not rotate relative to the cushion bracket 510 to change the angle. At this time, the third link 790 in the seat cushion angle sensing cable line 712 and the third Under the action of spring 770a, it cannot rotate. The long second connecting rod 760 cannot rotate under the action of the upper backrest frame angle sensing cable 752 and the fourth spring 780a. The non-rotatable elongated second link 760 prevents the fixed part 220 of the sensor compensation mechanism 200 from rotating through the fixed part compensation piece 230 .

Referring to Figures 55 and 56, when the cushion frame 500 rotates relative to the cushion bracket 510 to change its angle, the cushion angle sensing cable fixing bracket 520 on the cushion frame 500 pulls the cushion angle sensing cable 712. Since the cushion angle sensing cable The radii of the installation points of the first end 712a and the second end 712b of the line 712 are consistent, and the cushion frame 500 can be rotated at a rotation angle of 1:1 by pulling the third link 790 and overcoming the resistance of the third spring 770a. The rotating third link 790 pulls the elongated second link 760 to rotate through the upper backrest frame angle sensing cable 750 and the fourth spring 780a, so that the fixed part 220 of the sensor compensation mechanism 200 rotates relative to the sensor compensation mechanism 200 The part 210 rotates by a rotation angle that is equal to the rotation angle of the seat cushion frame 500 , which is equivalent to the rotation part 210 of the sensor compensation mechanism 200 being able to rotate relative to the fixed part 220 of the sensor compensation mechanism 200 . Realize the normal function of the seat belt device with its own sensor compensation mechanism used in the ABTS seat, and the seat belt 300 can be extracted normally.

Referring to Figures 57 and 58, when the upper backrest frame 430a rotates relative to the lower backrest frame 420a and changes in angle, the upper backrest frame angle sensing cable sleeve fixed bracket 421a on the upper backrest frame 430a pulls the upper backrest frame angle sensing cable. Line 752, since the radii of the installation points of the first end 752a and the second end 752b of the upper backrest frame angle sensing cable line 752 are consistent, the rotation angle of the upper backrest frame 430a can be adjusted 1:1 by pulling the long strip. The second link 760 rotates. After overcoming the resistance of the second spring 770, the rotating long second link 760 causes the fixed part 220 of the sensor compensation mechanism 200 to rotate relative to the rotating part 210 of the sensor compensation mechanism 200 and the upper part. The rotation angle of the backrest frame 430a is equal to that the rotating part 210 of the sensor compensation mechanism 200 can rotate relative to the fixed part 220 of the sensor compensation mechanism 200 . Realize the normal function of the seat belt device with its own sensor compensation mechanism used in the ABTS seat, and the seat belt 300 can be extracted normally.

Claims

Seat angle compensation mechanism, including:

Retractor, which is installed on the back frame of the seat;

The sensor compensation mechanism is installed at the hinge of the backrest frame and the seat cushion frame. It includes a rotating part, a fixed part and a fixed part compensation piece. The fixed part is installed on the backrest frame, and the rotating part is installed on the backrest frame through the fixed part compensation piece. On the seat cushion frame, the fixed part is connected through the retractor cable. The rotating part follows the rotation of the backrest frame and rotates concentrically with respect to the fixed part. The fixed part slides relative to the fixed part compensation piece, and the retractor is compensated by the retractor cable; It is characterized by: also including:

A cushion angle sensing cable. The cushion angle sensing cable includes a cushion angle sensing cable sleeve and a cushion angle sensing cable line passing through the cushion angle sensing cable sleeve. The cushion angle sensing cable sleeve The first end of the tube is fixed on the cushion bracket, the first end of the cushion angle sensing cable is fixed on the cushion frame, and the cushion frame is hinged on the cushion bracket;

A base fixed on the seat cushion frame, the second end of the seat cushion angle sensing cable sleeve is fixedly connected to the base;

A first connecting rod is hinged on the base, and the rotation center of the first connecting rod is coaxial with the rotation center of the backrest frame; the rotating part of the sensor compensation mechanism is connected to the fixed part compensation piece through the fixed part. The first connecting rod is connected, and the second end of the seat cushion angle sensing cable is fixedly connected to the first connecting rod;

A first spring, one end of the first spring hooks the base, and the other end hooks the first connecting rod.
The seat angle compensation mechanism according to claim 1, characterized in that a first hole is provided in the rotation center of the backrest frame, a second hole is provided in the seat cushion frame, and a first hole is provided in the base. A third hole is provided on the rotation center of the first connecting rod. A first rivet is used to pass through the first hole, the middle hole, the second hole, the third hole of the sensor compensation mechanism and The fourth hole is posteriorly anchored so that the rotation of the backrest frame, the seat cushion frame, the sensor compensation mechanism, the first link and the base are installed together.
The seat angle compensation mechanism according to claim 2, wherein the first connecting rod is a triangular connecting rod, and the first angle of the triangular connecting rod constitutes the rotation center of the first connecting rod, and the first connecting rod is a triangular connecting rod. three The second corner of the angular connecting rod is fixedly connected to the second end of the cushion angle sensing cable, and the third corner of the triangular connecting rod is connected to the other end of the spring.
The seat angle compensation mechanism according to claim 3, characterized in that a first socket is opened at a position of the triangular link close to the third corner, and the fixed part compensation piece of the sensor compensation mechanism passes through the third corner. A socket; a waist-shaped hole is opened at the position where the compensation piece of the fixed part of the sensor compensation mechanism passes through the first socket, and the second end of the cushion angle sensing cable is fixed on the position through the cable fixing screw. On the second corner of the triangular connecting rod, the cable fixing bolt passes through the waist-shaped hole.
Seat angle compensation mechanism, the backrest frame of which includes a lower backrest frame and an upper backrest frame, the upper backrest frame is hinged on the upper part of the lower backrest frame; and also includes:

A retractor, the retractor is installed on the upper backrest frame;

The sensor compensation mechanism is installed at the hinge of the lower backrest frame and the seat cushion frame. It includes a rotating part, a fixed part and a fixed part compensation piece. The fixed part is installed on the backrest frame, and the rotating part is installed through the fixed part compensation piece. On the seat cushion frame, the fixed part is connected through the retractor cable. The rotating part follows the rotation of the backrest frame and rotates concentrically with respect to the fixed part. The fixed part slides relative to the compensation piece of the fixed part, and the retractor is compensated by the retractor cable. ; It is characterized by: also including:

An upper backrest frame angle sensing cable. The upper backrest frame angle sensing cable includes an upper backrest frame angle sensing cable sleeve and an upper backrest frame angle sensing cable that passes through the upper backrest frame angle sensing cable sleeve. The first end of the upper backrest frame angle sensing cable sleeve is fixed on the upper part of the lower backrest frame, and the first end of the upper backrest frame angle sensing cable sleeve is fixed on the upper backrest frame ;

A base fixed on the seat cushion frame, the second end of the angle sensing cable sleeve of the upper backrest frame is fixedly connected to the base;

A second connecting rod is hinged on the base, and the rotation center of the second connecting rod is coaxial with the rotation center of the backrest frame; the rotating part of the sensor compensation mechanism is connected to the fixed part compensation piece through the fixed part. The second connecting rod is connected, and the second end of the upper backrest frame angle sensing cable is fixedly connected to the second connecting rod;

A second spring, one end of the second spring hooks the base, and the other end hooks the second connecting rod.
The seat angle compensation mechanism according to claim 5, characterized in that a first hole is provided at the rotation center of the lower backrest frame, a second hole is provided on the seat cushion frame, and a first hole is provided on the base. There is a third hole, and a fifth hole is opened on the rotation center of the second link. A second rivet is used to pass through the first hole, the middle hole, the second hole, and the third hole of the sensor compensation mechanism. And the fifth hole is rear anchored, so that the backrest frame, seat cushion frame, sensor compensation mechanism, second link and base are installed together.
The seat angle compensation mechanism according to claim 6, wherein the second link is in the shape of a strip, and the rotation center of the second link is located at the center of the strip-shaped second link, so The second end of the upper backrest frame angle sensing cable is fixedly connected to the upper end of the long second connecting rod; the other end of the second spring hooks the lower end of the long second connecting rod.
The seat angle compensation mechanism according to claim 7, characterized in that a second insertion hole is opened between the rotation center of the long second link and the lower end of the long second link, said The compensation piece of the fixed part of the sensor compensation mechanism passes through the second jack hole; a waist-shaped hole is provided at the position where the compensation piece of the fixed part of the sensor compensation mechanism passes through the second jack hole, and a second connector is used. After the rod bolt passes through the bolt hole and the waist-shaped hole at the lower end of the long second connecting rod, it is locked with the second connecting rod nut, so that the fixed part of the sensor compensation mechanism can pass through the fixed part. The compensation piece is connected with the second connecting rod.
Seat angle compensation mechanism, the backrest frame includes a lower backrest frame and an upper backrest frame, the upper backrest frame is hinged on the upper part of the lower backrest frame; also includes:

A retractor, the retractor is installed on the upper backrest frame;

The sensor compensation mechanism is installed at the hinge of the lower backrest frame and the seat cushion frame. It includes a rotating part, a fixed part and a fixed part compensation piece. The fixed part is installed on the backrest frame, and the rotating part is installed through the fixed part compensation piece. On the seat cushion frame, the fixed part is connected through the retractor cable. The rotating part follows the rotation of the backrest frame and rotates concentrically with respect to the fixed part. The fixed part slides relative to the compensation piece of the fixed part, and the retractor is compensated by the retractor cable. ; It is characterized by: also including:

An upper backrest frame angle sensing cable. The upper backrest frame angle sensing cable includes an upper backrest frame angle sensing cable sleeve and an upper backrest frame angle sensing cable that passes through the upper backrest frame angle sensing cable sleeve. line, the first end of the upper backrest frame angle sensing cable sleeve is fixed Fixed on the upper part of the lower backrest frame, the first end of the upper backrest frame angle sensing cable is fixed on the upper backrest frame;

A cushion angle sensing cable. The cushion angle sensing cable includes a cushion angle sensing cable sleeve and a cushion angle sensing cable line passing through the cushion angle sensing cable sleeve. The cushion angle sensing cable sleeve The first end of the tube is fixed on the cushion bracket, the first end of the cushion angle sensing cable is fixed on the cushion frame, and the cushion frame is hinged on the cushion bracket;

A base fixed on the seat cushion frame, the second end of the seat cushion angle sensing cable sleeve is fixedly connected to the base;

A second connecting rod is hinged on the base, and the rotation center of the second connecting rod is coaxial with the rotation center of the backrest frame; the rotating part of the sensor compensation mechanism is connected to the fixed part compensation piece through the fixed part. The second connecting rod is connected, and the second end of the upper backrest frame angle sensing cable is fixedly connected to the second connecting rod;

A third link hinged on the base, the rotation center of the third link being coaxial with the rotation center of the second link and the rotation center of the lower backrest frame; the upper backrest frame The second end of the angle sensing cable sleeve is fixedly connected to the third connecting rod, and the second end of the seat cushion angle sensing cable is fixedly connected to the third connecting rod;

a third spring, one end of the third spring is hooked on the base, and the other end is hooked on the third connecting rod;

A fourth spring, one end of the fourth spring is hooked on the third connecting rod, and the other end is hooked on the second connecting rod.
The seat angle compensation mechanism according to claim 9, characterized in that a first hole is provided in the rotation center of the lower backrest frame, a second hole is provided in the seat cushion frame, and a second hole is provided in the base. There is a third hole, and a fifth hole is provided in the rotation center of the second link. There are six holes in the rotation center of the third link, and a third rivet is used to pass through the first hole. , the middle hole, the second hole, the third hole, the fifth hole and the second six holes of the sensor compensation mechanism are posteriorly anchored, so that the lower backrest frame, the seat cushion frame, the sensor compensation mechanism, the second connecting rod, and the third connecting rod Installed together with the base.
The seat angle compensation mechanism according to claim 10, wherein the second link is in the shape of a strip, and the rotation center of the second link is located at the center of the strip-shaped second link, so The second end of the upper backrest frame angle sensing cable is fixedly connected to the upper end of the long second connecting rod; The other end of the fourth spring hooks the lower end of the elongated second connecting rod.
The seat angle compensation mechanism according to claim 11, characterized in that a second socket is opened between the rotation center of the elongated second link and the lower end of the elongated second link, said The compensation piece of the fixed part of the sensor compensation mechanism passes through the second jack hole; a waist-shaped hole is provided at the position where the compensation piece of the fixed part of the sensor compensation mechanism passes through the second jack hole, and a second connector is used. After the rod bolt passes through the bolt hole and the waist-shaped hole at the lower end of the long second connecting rod, it is locked with the second connecting rod nut, so that the rotating part of the sensor compensation mechanism can pass through the fixed part The compensation piece is connected with the second connecting rod.
The seat angle compensation mechanism according to claim 12, wherein the third link is a Y-shaped link, and the center of the Y-shaped link constitutes the rotation center of the third link, and the The second end of the upper backrest frame angle sensing cable sleeve is fixedly connected to the first end of the Y-shaped connecting rod, and the second end of the seat cushion angle sensing cable is connected to the second end of the Y-shaped connecting rod. Fixed connection, one end of the fourth spring is hooked on the third end of the Y-shaped connecting rod.