A measuring structure and method for adjusting the height of a car seat

Abstract

The invention discloses a measuring structure and method for adjusting the height of a car seat, wherein the measuring structure comprises a lower measuring platform, a positioning cylinder, an upper measuring platform and a ruler measuring tool; the lower measuring platform is composed of a magnetic positioning part and a platform part, and the bottom surface of the positioning part is coplanar with the reference surface of the platform part; the bottom surface of the positioning part is attracted and closely attached to the top surface of the upper slide rail by magnetic force; the inner end of the positioning cylinder is a magnetic conical part; the conical part is inserted into the lumen of the rear transverse tube of the seat cushion from the pipe mouth and is fixedly connected to the rear transverse tube of the seat cushion by magnetic force; the rear end of the upper measuring platform is fixedly connected to the outer end of the positioning cylinder; the ruler measuring tool is arranged between the front end of the upper measuring platform and the platform part to measure the vertical distance between the reference surface of the upper measuring platform and the reference surface of the platform part. The invention can take into account the high accuracy, low cost and high efficiency of measuring the actual relative height of the car seat, and can be completed by a single person with short time consumption.

Description

Technical Field

[0001] The invention relates to a measuring structure for adjusting the height of an automobile seat and a measuring method using the measuring structure. Background Art

[0002] With the rapid development of the automobile industry, as one of the key parts of automobiles, automobile seats are not only required to be reasonably arranged and ensure riding comfort, but also to continuously improve their safety performance. Therefore, automobile seats need to pass various tests (such as dynamic forward and backward collision tests, skeleton static stiffness tests, seat belt fixed point strength tests, etc.) to check whether they meet the corresponding performance requirements. One of the extremely important test states is that the seat is in the design position. For automobile seats with adjustable front and rear, backrest and height, the design position has the backrest angle, slide rail position and height adjustment position specified by the manufacturer.

[0003] However, see Figure 1 , except for the top and bottom positions, which are easy to ensure, the determination of other height adjustment positions is generally based on the theoretical relative height provided by the designer. The tester can ensure that the car seat is located at the height adjustment position specified by the test by adjusting the height adjustment mechanism 2 of the seat to make the measured actual relative height the same as the theoretical relative height. Among them, the common relative height is the vertical distance between the center line of the rear cross tube 1 of the seat cushion and the plane of the upper slide rail 3 on the same side. At present, the following two methods are mainly used for measurement: one is to use two steel rulers for measurement, the first one is to calibrate the center line of the rear cross tube of the seat cushion, and the second one is kept perpendicular to the first ruler to measure the vertical distance between the center line of the rear cross tube of the seat cushion and the plane of the upper slide rail on the same side. This measurement method is not accurate in positioning and generally requires two people to assist, which is inefficient; the second is to use a three-coordinate measuring instrument for measurement. Although the measurement result is highly accurate, the equipment cost is high, the time consumption is relatively long, and the practicality is not strong. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a measuring structure and a measuring method for adjusting the height of a car seat, so as to solve the problem that the existing measuring method has difficulty in taking into account the measurement accuracy, measurement efficiency, cost and time consumption.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] A measuring structure for adjusting the height of a car seat, used for measuring the actual relative height of the car seat, the actual relative height being the vertical distance between the center line of the rear transverse tube of the seat cushion of the car seat and the top surface of the upper slide rail, the top surface of the upper slide rail being the mounting surface of a height adjustment mechanism for adjusting the height of the car seat; and the pipe opening of the rear transverse tube of the seat cushion is exposed at the side plate of the seat cushion of the car seat, and the pipe opening and the upper slide rail are located on the same side of the car seat;

[0007] The characteristic is that: the measuring structure comprises a lower measuring platform, a positioning cylinder, an upper measuring platform and a ruler;

[0008] The lower measuring platform is composed of a magnetic positioning part and a platform part, and the bottom surface of the positioning part is coplanar with the reference surface of the platform part; the bottom surface of the positioning part is attracted by magnetic force and closely attached to the top surface of the upper slide rail, so that the platform part is located outside the car seat;

[0009] The inner end of the positioning tube is a conical portion with magnetism; the conical portion is inserted into the tube cavity of the rear transverse tube of the seat cushion from the tube opening and is fixedly connected to the rear transverse tube of the seat cushion by magnetic force, so that: the outer end of the positioning tube is located outside the car seat, and the conical portion is coaxial with the rear transverse tube of the seat cushion;

[0010] The rear end of the upper measuring platform is fixedly connected to the outer end of the positioning cylinder, so that the reference plane of the upper measuring platform is parallel to the axis of the conical part and the reference plane of the platform part, and the front end of the upper measuring platform extends to the upper position of the platform part;

[0011] The ruler measuring tool is arranged between the front end of the upper measuring platform and the platform portion to measure the vertical distance between the reference plane of the upper measuring platform and the reference plane of the platform portion.

[0012] As a preferred embodiment of the present invention: the positioning portion and the platform portion form a stepped structure, the reference surface of the platform portion is its top surface; the reference surface of the upper measuring platform is its top surface; the axis of the conical portion is located on the middle plane of the upper measuring platform in its thickness direction; the measurement result of the ruler measuring tool is the vertical distance between the top surface of the upper measuring platform and the top surface of the platform portion, recorded as L1; the actual relative height H=L1-D / 2, D is the thickness of the upper measuring platform.

[0013] As a preferred embodiment of the present invention: a plurality of diameter scales of the conical portion are marked on the conical surface of the conical portion of the positioning cylinder.

[0014] As a preferred embodiment of the present invention: the rear end of the upper measuring platform is fixedly connected to the outer end of the positioning cylinder in the following manner: the outer end of the positioning cylinder is a tube body portion, and the tube body portion is provided with two slide grooves, the two slide grooves are located on the same plane parallel to the axis of the cone portion, and the two slide grooves are not colinear; the thickness of the upper measuring platform is equal to the width of the two slide grooves, and the rear end of the upper measuring platform is embedded in the two slide grooves, so that the reference surface of the upper measuring platform is parallel to the axis of the cone portion.

[0015] Preferably, the lengths of the two slide grooves are greater than the width of the upper measuring platform.

[0016] As a preferred embodiment of the present invention: the measuring tool is a vernier caliper.

[0017] As a preferred embodiment of the present invention: the measuring tool is a steel ruler.

[0018] A method for measuring the height adjustment of a car seat, for measuring the actual relative height of the car seat, the actual relative height being the vertical distance between the center line of a rear transverse tube of a seat cushion of the car seat and the top surface of an upper slide rail, the top surface of the upper slide rail being the mounting surface of a height adjustment mechanism for adjusting the height of the car seat; and the pipe opening of the rear transverse tube of the seat cushion is exposed at a side plate of the seat cushion of the car seat, and the pipe opening and the upper slide rail are located on the same side of the car seat;

[0019] The characteristic is that: the measuring method adopts the measuring structure, which includes a lower measuring platform, a positioning cylinder, an upper measuring platform and a ruler; wherein the lower measuring platform is composed of a magnetic positioning part and a platform part, and the bottom surface of the positioning part is coplanar with the reference surface of the platform part; the inner end of the positioning cylinder is a magnetic conical part; the rear end of the upper measuring platform is fixedly connected to the outer end of the positioning cylinder, so that the reference surface of the upper measuring platform is aligned with the axis of the conical part;

[0020] The measuring method comprises:

[0021] Step 1: Arrange the lower measuring platform: The bottom surface of the positioning part is attracted and closely attached to the top surface of the upper slide rail by magnetic force, so that the platform part is located outside the car seat;

[0022] Step 2: Arrange the positioning tube and the upper measuring platform: insert the conical portion from the tube opening into the tube cavity of the rear transverse tube of the seat cushion and fix it with the rear transverse tube of the seat cushion by magnetic force, so that: the outer end of the positioning tube is located outside the car seat, and the conical portion is coaxial with the rear transverse tube of the seat cushion;

[0023] Step 3, adjusting the inclination angle of the upper measuring platform: by rotating the positioning cylinder around the axis of the conical portion, so that the reference plane of the upper measuring platform is parallel to the reference plane of the platform portion, and the front end of the upper measuring platform extends to the upper position of the platform portion;

[0024] Step 4: measuring with the ruler: placing the ruler between the front end of the upper measuring platform and the platform portion to measure the vertical distance between the reference plane of the upper measuring platform and the reference plane of the platform portion;

[0025] Step 5, calculating the actual relative height: the actual relative height is calculated based on the vertical distance measured by the ruler and the vertical distance between the axis of the cone and the reference plane of the upper measuring platform.

[0026] As a preferred embodiment of the present invention: in the step three, the method of adjusting the inclination angle of the upper measuring platform is: first use a magnetic digital display angle meter to measure the inclination angle α of the reference plane of the platform part, and then use the magnetic digital display angle meter to measure the inclination angle β of the reference plane of the upper measuring platform in real time, and rotate the positioning cylinder around the axis of the conical part until β=α, and then stop the rotation of the positioning cylinder so that the reference plane of the upper measuring platform is parallel to the reference plane of the platform part.

[0027] As a preferred embodiment of the present invention: in the step three, the method of adjusting the inclination angle of the upper measuring platform is: first, the bottom edge of the steel ruler is attracted and tightly attached to the top surface of the platform portion by magnetic force, so that the scale plane of the steel ruler body is perpendicular to the reference plane of the platform portion; then, the positioning cylinder is rotated around the axis of the conical portion until the front end face of the upper measuring platform is completely in contact with the scale plane of the steel ruler body, that is, when the reference plane of the upper measuring platform is perpendicular to the scale plane of the steel ruler body, the rotation of the positioning cylinder is stopped, so that the reference plane of the upper measuring platform is parallel to the reference plane of the platform portion.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] First, the present invention adopts a measuring structure composed of a lower measuring platform, a positioning cylinder, an upper measuring platform and a ruler, which can accurately measure the actual relative height of the car seat. The measuring structure itself has a simple structure and low cost. The installation operation on the car seat is simple and fast and can be completed by one person. Therefore, the present invention can take into account the high accuracy, low cost, high efficiency of measuring the actual relative height of the car seat, and the measurement can be completed by one person in a short time.

[0030] Second, the present invention uses a magnetic cone portion to insert into the tube cavity of the rear cross tube of the seat cushion from the tube mouth, and relies on magnetic force to achieve a fixed connection with the rear cross tube of the seat cushion. Therefore, the present invention can be coaxially matched with the rear cross tubes of the seat cushion with different diameters, and is suitable for car seats with different diameters of the rear cross tubes of the seat cushion, and has strong versatility.

[0031] Third, the present invention marks multiple diameter scales of the cone portion on the cone surface of the cone portion, and can determine whether the cone portion is coaxial with the rear transverse tube of the seat cushion by reading the diameter scale when the cone portion is inserted into the tube cavity of the rear transverse tube of the seat cushion. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0033] Figure 1 It is a structural schematic diagram of a car seat;

[0034] Figure 2 is a schematic diagram of the structure of the measuring structure of the present invention, wherein a vernier caliper is used as a measuring tool;

[0035] Figure 3 It is a structural schematic diagram of the positioning tube in the present invention;

[0036] Figure 4 It is a schematic structural diagram of the measuring structure of the present invention, wherein a steel ruler is used as a measuring tool. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with embodiments:

[0038] Embodiment 1

[0039] like Figures 1 to 3 As shown, a first embodiment of the present invention discloses a measuring structure for adjusting the height of a car seat, which is used to measure the actual relative height of the car seat. The actual relative height is the vertical distance between the center line of the rear transverse tube 1 of the seat cushion of the car seat and the top surface of the upper slide rail 3. The actual relative height is recorded as H. The top surface of the upper slide rail 3 is the mounting surface of the height adjustment mechanism 2 for adjusting the height of the car seat; and the pipe opening 1a of the rear transverse tube 1 of the seat cushion is exposed at the seat cushion side panel 9 of the car seat, and the pipe opening 1a and the upper slide rail 3 are located on the same side of the car seat.

[0040] The measuring structure comprises a lower measuring platform 4, a positioning cylinder 5, an upper measuring platform 6 and a ruler;

[0041] The lower measuring platform 4 is composed of a magnetic positioning part 41 and a platform part 42, and the bottom surface of the positioning part 41 is coplanar with the reference surface of the platform part 42; the bottom surface of the positioning part 41 is attracted by magnetic force and closely attached to the top surface of the upper slide rail 3, so that the platform part 42 is located outside the car seat;

[0042] The inner end of the positioning tube 5 is a conical portion 51 having magnetic properties; the conical portion 51 is inserted into the tube cavity of the rear transverse tube 1 of the seat cushion from the tube opening 1a and is fixedly connected to the rear transverse tube 1 of the seat cushion by magnetic force, so that: the outer end of the positioning tube 5 is located outside the car seat, and the conical portion 51 is coaxial with the rear transverse tube 1 of the seat cushion;

[0043] The rear end of the upper measuring platform 6 is fixedly connected to the outer end of the positioning tube 5, so that the reference plane of the upper measuring platform 6 is parallel to the axis of the conical portion 51 and the reference plane of the platform portion 42, and the front end of the upper measuring platform 6 extends to the upper position of the platform portion 42;

[0044] The ruler measuring tool is arranged between the front end of the upper measuring platform 6 and the platform portion 42 to measure the vertical distance between the reference plane of the upper measuring platform 6 and the reference plane of the platform portion 42 .

[0045] The measuring tool is preferably a vernier caliper 7 or a steel ruler 8 .

[0046] Thus, according to the vertical distance measured by the ruler and the vertical distance between the axis of the conical portion 51 and the reference plane of the upper measuring platform 6 (determined when the measuring platform 6 is fixedly connected to the positioning cylinder 5 in the design), the actual relative height H can be calculated. The specific calculation formula varies according to the different settings of the reference plane of the upper measuring platform 6 and the reference plane of the platform portion 42. See the following embodiment 5 for details.

[0047] Embodiment 2

[0048] like Figures 1 to 3 As shown, embodiment 2 of the present invention discloses a method for measuring the height adjustment of a car seat, which is used to measure the actual relative height of a car seat, the actual relative height being the vertical distance between the center line of the rear transverse tube 1 of the seat cushion of the car seat and the top surface of the upper slide rail 3, and the actual relative height being denoted as H. The top surface of the upper slide rail 3 is the mounting surface of the height adjustment mechanism 2 for adjusting the height of the car seat; and, the pipe opening 1a of the rear transverse tube 1 of the seat cushion is exposed at the seat cushion side panel 9 of the car seat, and the pipe opening 1a and the upper slide rail 3 are located on the same side of the car seat.

[0049] The measuring method adopts the measuring structure described in Example 1, which includes a lower measuring platform 4, a positioning cylinder 5, an upper measuring platform 6 and a ruler; wherein the lower measuring platform 4 is composed of a magnetic positioning portion 41 and a platform portion 42 connected together, and the bottom surface of the positioning portion 41 is coplanar with the reference surface of the platform portion 42; the inner end of the positioning cylinder 5 is a magnetic conical portion 51; the rear end of the upper measuring platform 6 is fixedly connected to the outer end of the positioning cylinder 5, so that the reference surface of the upper measuring platform 6 is aligned with the axis of the conical portion 51.

[0050] The measuring method comprises:

[0051] Step 1: Arrange the lower measuring platform 4: The bottom surface of the positioning portion 41 is attracted and closely attached to the top surface of the upper slide rail 3 by magnetic force, so that the platform portion 42 is located outside the car seat;

[0052] Step 2: Arrange the positioning tube 5 and the upper measuring platform 6: insert the conical portion 51 from the tube opening 1a into the tube cavity of the rear transverse tube 1 of the seat cushion and fix it with the rear transverse tube 1 of the seat cushion by magnetic force, so that: the outer end of the positioning tube 5 is located outside the car seat, and the conical portion 51 is coaxial with the rear transverse tube 1 of the seat cushion;

[0053] Step 3: Adjust the inclination angle of the upper measuring platform 6: rotate the positioning cylinder 5 around the axis of the conical portion 51 so that the reference plane of the upper measuring platform 6 is parallel to the reference plane of the platform portion 42, and the front end of the upper measuring platform 6 extends to the upper position of the platform portion 42;

[0054] Step 4: Use the ruler to measure: Place the ruler between the front end of the upper measuring platform 6 and the platform portion 42 to measure the vertical distance between the reference plane of the upper measuring platform 6 and the reference plane of the platform portion 42;

[0055] Step 5, calculate the actual relative height: based on the vertical distance measured by the ruler and the vertical distance between the axis of the cone 51 and the reference plane of the upper measuring platform 6 (determined in the design when the measuring platform 6 is fixedly connected to the positioning tube 5), calculate the actual relative height H.

[0056] The specific calculation formula of step five varies according to different settings of the reference surface of the upper measuring platform 6 and the reference surface of the platform portion 42 , as detailed in the following embodiment five.

[0057] Therefore, by using the present invention, by adjusting the height adjustment mechanism 2, the actual relative height H measured by the present invention is equal to the theoretical relative height provided by the designer, which can ensure that the car seat is located at the height adjustment position specified by the test.

[0058] Embodiment 3

[0059] On the basis of the above-mentioned embodiment 2, this embodiment 3 also adopts the following preferred structure:

[0060] like Figure 2 As shown, in the step three, the method of adjusting the inclination angle of the upper measuring platform 6 is: first use a magnetic digital display angle meter to measure the inclination angle α of the reference plane of the platform part 42, and then use the magnetic digital display angle meter to measure the inclination angle β of the reference plane of the upper measuring platform 6 in real time, and rotate the positioning cylinder 5 around the axis of the conical part 51 until β=α, then stop the rotation of the positioning cylinder 5, so that the reference plane of the upper measuring platform 6 is parallel to the reference plane of the platform part 42.

[0061] Embodiment 4

[0062] On the basis of the above-mentioned embodiment 2, this embodiment 4 also adopts the following preferred structure:

[0063] like Figure 4 As shown, in the step three, the method of adjusting the inclination angle of the upper measuring platform 6 is: first, the bottom edge of the steel ruler 8 is attracted and pressed against the top surface of the platform portion 42 by magnetic force, so that the scale plane of the steel ruler 8 is perpendicular to the reference plane of the platform portion 42; then, the positioning cylinder 5 is rotated around the axis of the conical portion 51 until the front end face of the upper measuring platform 6 is completely in contact with the scale plane of the steel ruler 8, that is, when the reference plane of the upper measuring platform 6 is perpendicular to the scale plane of the steel ruler 8, the rotation of the positioning cylinder 5 is stopped, so that the reference plane of the upper measuring platform 6 is parallel to the reference plane of the platform portion 42.

[0064] Embodiment 5

[0065] Based on any one of the above embodiments 1 to 4, this embodiment 5 also adopts the following preferred structure:

[0066] like Figure 2As shown, the positioning portion 41 and the platform portion 42 form a stepped structure, the reference surface of the platform portion 42 is its top surface, so that the top surface of the platform portion 42 is coplanar with the top surface of the upper slide rail 3; the stepped structure makes the positioning and fixing of the positioning portion 41 on the top surface of the upper slide rail 3 more accurate and not easy to move; the reference surface of the upper measuring platform 6 is its top surface; the axis of the conical portion 51 is located on the middle plane of the upper measuring platform 6 in its thickness direction; the measurement result of the ruler measuring tool is the vertical distance between the top surface of the upper measuring platform 6 and the top surface of the platform portion 42, recorded as L1; the actual relative height H=L1-D / 2, D is the thickness of the upper measuring platform 6.

[0067] In addition, the fifth embodiment may also be modified as follows but is not limited thereto:

[0068] First, the connection position of the upper measuring platform 6 on the positioning cylinder 5 is changed so that the axis of the conical portion 51 is located on the reference plane of the upper measuring platform 6, i.e., its top surface. In this case, the measurement result of the ruler is recorded as L2; ​​the actual relative height H=L2.

[0069] Second, the connection position of the upper measuring platform 6 on the positioning cylinder 5 is changed so that the axis of the conical portion 51 is located on the bottom surface of the upper measuring platform 6. In this case, the measurement result of the ruler is recorded as L3; the actual relative height H=L3-D, where D is the thickness of the upper measuring platform 6.

[0070] Third, the structure of the lower measuring platform 4 is changed to use the bottom surface of the platform portion 42 as its reference surface. In this case, the calculation formula of the actual relative height remains unchanged, which is still H=L1-D / 2, but it can be convenient for the outer measuring claws of the vernier caliper to measure.

[0071] Embodiment 6

[0072] Based on any one of the above embodiments 1 to 5, this embodiment 6 also adopts the following preferred structure:

[0073] like Figure 2 and Figure 3 As shown, a plurality of diameter scales 52 of the conical portion 51 are marked on the conical surface of the conical portion 51 of the positioning tube 5 , wherein the marked diameter scales 52 should include the values ​​of the inner diameter of the tube cavity of the rear transverse tube 1 of a common seat cushion.

[0074] Thus, after the conical portion 51 is inserted into the tube cavity of the rear transverse tube 1 of the seat cushion from the tube mouth 1a, by reading the diameter scale 52 corresponding to the position of the tube mouth 1a on the conical portion 51, if the read diameter scale 52 is equal to the inner diameter of the tube cavity of the rear transverse tube 1 of the seat cushion, it means that the conical portion 51 is coaxial with the rear transverse tube 1 of the seat cushion, otherwise, the insertion angle of the conical portion 51 should be adjusted until the read diameter scale 52 is equal to the inner diameter of the tube cavity of the rear transverse tube 1 of the seat cushion; therefore, the present invention can determine whether the conical portion 51 is coaxial with the rear transverse tube 1 of the seat cushion by reading the diameter scale 52 when the conical portion 51 is inserted into the tube cavity of the rear transverse tube 1 of the seat cushion.

[0075] Embodiment 7

[0076] Based on any one of the above embodiments 1 to 6, this embodiment 7 also adopts the following preferred structure:

[0077] like Figure 2 and Figure 3 As shown, the rear end of the upper measuring platform 6 is fixedly connected to the outer end of the positioning tube 5 in the following manner: the outer end of the positioning tube 5 is a tube body portion 53, and the tube body portion 53 is provided with two slide grooves 53a, and the two slide grooves 53a are located on the same plane parallel to the axis of the cone portion 51, and the two slide grooves 53a are not colinear; the thickness of the upper measuring platform 6 is equal to the width of the two slide grooves 53a, and the rear end of the upper measuring platform 6 is embedded in the two slide grooves 53a, so that the reference plane of the upper measuring platform 6 is parallel to the axis of the cone portion 51.

[0078] The vertical distance between the plane where the two slide grooves 53a are located and the axis of the cone 51 depends on the vertical distance between the axis of the cone 51 and the reference plane of the upper measuring platform 6. There are many ways to set the vertical distance, see the above-mentioned embodiment 5 for details.

[0079] Among them, preferably: Figure 2 As shown, the length of the two slide grooves 53a is greater than the width of the upper measuring platform 6. Therefore, by embedding the upper measuring platform 6 into the two slide grooves 53a at different length positions to adapt to the platform portion 42, it is ensured that the front end of the upper measuring platform 6 extends to the upper position of the platform portion 42, which effectively improves the adaptability of the present invention to different car seats.

[0080] The present invention is not limited to the above-mentioned specific implementation modes. According to the above-mentioned contents, in accordance with the common technical knowledge and customary means in the field, without departing from the above-mentioned basic technical ideas of the present invention, the present invention can also make other various forms of equivalent modifications, replacements or changes, all of which fall within the protection scope of the present invention.

Claims

1. A measuring structure for adjusting the height of a car seat, used for measuring the actual relative height of the car seat, the actual relative height being the vertical distance between the center line of the rear transverse tube (1) of the seat cushion of the car seat and the top surface of the upper slide rail (3), the top surface of the upper slide rail (3) being the mounting surface of a height adjustment mechanism (2) for adjusting the height of the car seat; and the pipe opening (1a) of the rear transverse tube (1) of the seat cushion is exposed at the seat cushion side plate (9) of the car seat, and the pipe opening (1a) and the upper slide rail (3) are located on the same side of the car seat; Features: The measuring structure comprises a lower measuring platform (4), a positioning cylinder (5), an upper measuring platform (6) and a ruler; The lower measuring platform (4) is composed of a magnetic positioning part (41) and a platform part (42) connected together, and the bottom surface of the positioning part (41) is coplanar with the reference surface of the platform part (42); the bottom surface of the positioning part (41) is attracted by magnetic force and closely attached to the top surface of the upper slide rail (3), so that the platform part (42) is located outside the car seat; The inner end of the positioning tube (5) is a conical portion (51) having magnetic properties; the conical portion (51) is inserted into the tube cavity of the rear transverse tube (1) of the seat cushion from the tube opening (1a) and is fixedly connected to the rear transverse tube (1) of the seat cushion by means of magnetic force, so that: the outer end of the positioning tube (5) is located outside the automobile seat, and the conical portion (51) is coaxial with the rear transverse tube (1) of the seat cushion; The rear end of the upper measuring platform (6) is fixedly connected to the outer end of the positioning cylinder (5), so that the reference plane of the upper measuring platform (6) is parallel to the axis of the conical portion (51) and the reference plane of the platform portion (42), and the front end of the upper measuring platform (6) extends to a position above the platform portion (42); The ruler measuring tool is arranged between the front end of the upper measuring platform (6) and the platform portion (42) to measure the vertical distance between the reference plane of the upper measuring platform (6) and the reference plane of the platform portion (42).

2. The measuring structure for adjusting the height of a car seat according to claim 1, characterized in that: The positioning portion (41) and the platform portion (42) form a stepped structure, the reference surface of the platform portion (42) is its top surface; the reference surface of the upper measuring platform (6) is its top surface; the axis of the conical portion (51) is located on the middle plane of the upper measuring platform (6) in the thickness direction; the measurement result of the ruler measuring tool is the vertical distance between the top surface of the upper measuring platform (6) and the top surface of the platform portion (42), which is recorded as L1; the actual relative height H=L1-D / 2, where D is the thickness of the upper measuring platform (6).

3. The measuring structure for adjusting the height of a car seat according to claim 1 or 2, characterized in that: A plurality of diameter scales (52) of the conical portion (51) are marked on the conical surface of the conical portion (51) of the positioning cylinder (5).

4. The measuring structure for adjusting the height of a car seat according to claim 1 or 2, characterized in that: The rear end of the upper measuring platform (6) is fixedly connected to the outer end of the positioning tube (5) in the following manner: the outer end of the positioning tube (5) is a tube body (53), and the tube body (53) is provided with two slide grooves (53a), the two slide grooves (53a) are located on the same plane parallel to the axis of the conical portion (51), and the two slide grooves (53a) are not collinear; the thickness of the upper measuring platform (6) is equal to the width of the two slide grooves (53a), and the rear end of the upper measuring platform (6) is embedded in the two slide grooves (53a), so that the reference surface of the upper measuring platform (6) is parallel to the axis of the conical portion (51).

5. The measuring structure for adjusting the height of a car seat according to claim 4, characterized in that: The length of the two slide grooves (53a) is greater than the width of the upper measuring platform (6).

6. The measuring structure for adjusting the height of a car seat according to claim 1 or 2, characterized in that: The measuring tool is a vernier caliper (7).

7. The measuring structure for adjusting the height of a car seat according to claim 1 or 2, characterized in that: The ruler measuring tool is a steel ruler (8).

8. A method for measuring the height adjustment of a car seat, for measuring the actual relative height of the car seat, the actual relative height being the vertical distance between the center line of the rear transverse tube (1) of the seat cushion of the car seat and the top surface of the upper slide rail (3), the top surface of the upper slide rail (3) being the mounting surface of a height adjustment mechanism (2) for adjusting the height of the car seat; and the pipe opening (1a) of the rear transverse tube (1) of the seat cushion is exposed at the seat cushion side panel (9) of the car seat, and the pipe opening (1a) and the upper slide rail (3) are located on the same side of the car seat; Features: The measuring method adopts the measuring structure according to any one of claims 1 to 7; the inner end of the positioning cylinder (5) is a magnetic conical portion (51); the rear end of the upper measuring platform (6) is fixedly connected to the outer end of the positioning cylinder (5), so that the reference surface of the upper measuring platform (6) is aligned with the axis of the conical portion (51); The measuring method comprises: Step 1: Arrange the lower measuring platform (4): The bottom surface of the positioning portion (41) is attracted and closely attached to the top surface of the upper slide rail (3) by magnetic force, so that the platform portion (42) is located outside the car seat; Step 2: Arrange the positioning tube (5) and the upper measuring platform (6): insert the conical portion (51) from the tube opening (1a) into the tube cavity of the rear transverse tube (1) of the seat cushion and fix it to the rear transverse tube (1) of the seat cushion by means of magnetic force, so that: the outer end of the positioning tube (5) is located outside the automobile seat, and the conical portion (51) is coaxial with the rear transverse tube (1) of the seat cushion; Step 3, adjusting the inclination angle of the upper measuring platform (6): by rotating the positioning cylinder (5) around the axis of the conical portion (51), so that the reference plane of the upper measuring platform (6) is parallel to the reference plane of the platform portion (42), and the front end of the upper measuring platform (6) extends to the upper position of the platform portion (42); Step 4: measuring with the ruler: placing the ruler between the front end of the upper measuring platform (6) and the platform portion (42) to measure the vertical distance between the reference plane of the upper measuring platform (6) and the reference plane of the platform portion (42); Step 5, calculating the actual relative height: the actual relative height is calculated based on the vertical distance measured by the ruler and the vertical distance between the axis of the cone (51) and the reference plane of the upper measuring platform (6).

9. The method for measuring the height adjustment of a car seat according to claim 8, characterized in that: In the step three, the method for adjusting the inclination angle of the upper measuring platform (6) is as follows: first, the inclination angle α of the reference plane of the platform portion (42) is measured using a magnetic digital display angle meter, and then the inclination angle β of the reference plane of the upper measuring platform (6) is measured in real time using the magnetic digital display angle meter, and the positioning cylinder (5) is rotated around the axis of the conical portion (51) until β=α, and then the rotation of the positioning cylinder (5) is stopped, so that the reference plane of the upper measuring platform (6) is parallel to the reference plane of the platform portion (42).

10. The method for measuring the height adjustment of a car seat according to claim 8, characterized in that: In the step 3, the inclination angle of the upper measuring platform (6) is adjusted by firstly attracting the bottom edge of the steel ruler (8) by magnetic force and pressing it against the top surface of the platform portion (42) so that the scale plane of the steel ruler (8) is perpendicular to the reference plane of the platform portion (42); then rotating the positioning cylinder (5) around the axis of the conical portion (51) until the front end surface of the upper measuring platform (6) is completely in contact with the scale plane of the steel ruler (8), that is, when the reference plane of the upper measuring platform (6) is perpendicular to the scale plane of the steel ruler (8), the rotation of the positioning cylinder (5) is stopped so that the reference plane of the upper measuring platform (6) is parallel to the reference plane of the platform portion (42).

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