A fatigue test device and test method for a car seat back recliner

Abstract

The invention discloses a fatigue testing device and a testing method for an automobile seat backrest angle adjuster, comprising a base, an arch frame fixed on the base, a forward extension frame and an unlocking frame, wherein a first cylinder and a pulley are fixed on the base, a second cylinder and a third cylinder are fixed on both inner sides of the arch frame, a fourth cylinder is fixed on the forward extension frame, and a fifth cylinder is fixed on the unlocking frame, a stopper is installed on the extension rod of the first cylinder, a force sensor and an auxiliary ball head are installed on the extension rods of the second cylinder, the third cylinder and the fourth cylinder, a traction rope passes through a pulley, one end of which is fixed on the stopper of the first cylinder, and the other end is fixed on the seat back; precise control and closed-loop control can be realized, and corresponding force and angle curves can be output; the output speed of the execution cylinder is realized by a pressure regulating valve and a pressure reducing valve, thereby realizing the controllable backrest adjustment speed.

Description

Technical Field

[0001] The invention relates to a seat back fatigue test, in particular to a vehicle seat back combined fatigue test device and a test method. Background Art

[0002] With the rich adjustment functions of automobile seat backrests and their more and more frequent use, the requirements for the backrest frame assembly are getting higher and higher. Therefore, the reliability of the backrest frame assembly structure is very important, and the backrest combination fatigue durability test has become an indispensable verification link.

[0003] The prior art CN201922474654.9 "A car seat back fatigue detection device" describes a seat back fatigue detection device, but the device only implements basic actions and cannot meet the requirements of loading force and speed control as well as test curve output. Summary of the invention

[0004] The purpose of the present invention is to solve the above deficiencies in the prior art and to provide a fatigue testing device and a testing method for a car seat back recliner.

[0005] In order to achieve the above objectives, the following technical solutions are provided:

[0006] A fatigue testing device for an automobile seat back angle adjuster comprises a base, an arch frame fixed on the base, an extension frame and an unlocking frame, wherein a first cylinder and a pulley are fixed on the base, a second cylinder and a third cylinder are fixed on both inner sides of the arch frame, a fourth cylinder is fixed on the extension frame, and a fifth cylinder is fixed on the unlocking frame, a stopper is installed on the extension rod of the first cylinder, a force sensor and an auxiliary ball head are installed on the extension rods of the second, third and fourth cylinders, a traction rope passes through the pulley and is fixed on the stopper of the first cylinder at one end, and is fixed on the seat back at the other end; in a testing state, the seat is installed on the base and placed above the first cylinder, the second and third cylinders are placed on the left and right sides of the seat back, the fourth cylinder is placed directly in front of the seat back, the fifth cylinder is placed above the seat back angle adjuster handle, and the extension rod of the fifth cylinder is connected to the seat back angle adjuster handle, and an angle sensor is installed on the seat back.

[0007] Preferably, a controller, a pressure regulating valve and a pressure reducing valve are further included to control the first cylinder, the second cylinder, the third cylinder, the fourth cylinder and the fifth cylinder.

[0008] A testing method for a fatigue testing device for a vehicle seat back recliner comprises the following steps:

[0009] S1: Install the seat on the base, connect one end of the traction rope to the seat back, connect the fifth cylinder to the seat back recliner handle, and turn on the controller;

[0010] S2: The extension rod of the fifth cylinder retracts, the seat back recliner handle opens, and the extension rod of the first cylinder retracts, driving the seat back to recline;

[0011] S3: When the angle sensor installed at the headrest rod of the seat back reaches the set value, the extension rod of the fifth cylinder returns to its position and the seat back recliner handle is locked;

[0012] S4: The extension rod of the fifth cylinder retracts, the seat back recliner handle opens, and the extension rod of the first cylinder extends, driving the seat back to its original position;

[0013] S5: The extension rod of the fifth cylinder returns to its original position, the seat back recliner handle is locked, the extension rod of the fourth cylinder extends, applies a set pressure to the seat back, and then retracts;

[0014] S6: The second and third cylinders extend alternately to apply a set pressure to the side of the seat back, and then retract;

[0015] S7: Repeat steps S1-S6 to perform a seat back recliner fatigue test.

[0016] Beneficial effects:

[0017] The present invention collects the loading force value and the backrest angle value in real time through the force sensor and the angle sensor, can realize precise control and closed-loop control, and can output the corresponding force and angle curve; through the pressure regulating valve and the pressure reducing valve, the output speed of the actuator cylinder is realized, thereby realizing the controllable backrest adjustment speed. In summary, the test requirements of different standards for various seats can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Axonometric measurement of a fatigue test equipment for a car seat back recliner Figure 1 ;

[0019] Figure 2 Axonometric measurement of a fatigue test equipment for a car seat back recliner Figure 2 . DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0021] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In addition, in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1 and Figure 2The fatigue test equipment of the seat back recliner of an automobile shown in the figure comprises a base 1, an arch frame 2 fixed on the base 1, a forward extension frame 3 and an unlocking frame 4, wherein a first cylinder 10 and a pulley 12 are fixed on the base 1, a second cylinder 21 and a third cylinder 22 are fixed on the inner sides of the arch frame 2, a fourth cylinder 30 is fixed on the forward extension frame 3, and a fifth cylinder 40 is fixed on the unlocking frame 4, a stopper 11 is installed on the extension rod of the first cylinder 40, and a force sensor and an auxiliary air filter are installed on the extension rods of the second cylinder 21, the third cylinder 22 and the fourth cylinder. With a ball head, a traction rope (not shown in the figure) passes through the pulley 12, one end of which is fixed on the block 11 of the first cylinder, and the other end is fixed on the seat back 5; in the test state, the seat is installed on the base 1 and placed above the first cylinder 10, the second cylinder 21 and the third cylinder 22 are placed on the left and right sides of the seat back 5, the fourth cylinder 3 is placed directly in front of the seat back 5, the fifth cylinder 40 is placed above the seat back angle adjuster handle, and the extension rod of the fifth cylinder 40 is connected to the seat back angle adjuster handle, and an angle sensor is installed on the seat back.

[0024] The system further includes a controller 6 , a pressure regulating valve and a pressure reducing valve to control the first cylinder 10 , the second cylinder 21 , the third cylinder 22 , the fourth cylinder 30 and the fifth cylinder 40 .

[0025] A testing method for a fatigue testing device for a vehicle seat back recliner comprises the following steps:

[0026] S1: The seat is mounted on the base 1, one end of the traction rope is connected to the seat back 5, the fifth cylinder 40 is connected to the seat back recliner handle, and the controller 6 is turned on;

[0027] S2: The extension rod of the fifth cylinder 40 is retracted, the seat back recliner handle is opened, and the extension rod of the first cylinder 40 is retracted, driving the seat back 5 to recline backward;

[0028] S3: When the angle sensor installed at the headrest rod of the seat back reaches the set value, the extension rod of the fifth cylinder 40 returns to its position and the seat back recliner handle is locked;

[0029] S4: The extension rod of the fifth cylinder 40 is retracted, the seat back recliner handle is opened, and the extension rod of the first cylinder 10 is extended, driving the seat back 5 to return to its original position;

[0030] S5: The extension rod of the fifth cylinder 40 returns to its original position, the seat back recliner handle is locked, and the extension rod of the fourth cylinder 30 extends to apply a set pressure to the seat back, and then retracts;

[0031] S6: The second cylinder 21 and the third cylinder 22 extend alternately to apply a set pressure to the side of the seat back, and then retract;

[0032] S7: Repeat steps S1-S6 to perform a seat back recliner fatigue test.

[0033] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A test method for a fatigue test device for a car seat back recliner, characterized in that: A fatigue test device for an automobile seat back recliner comprises a base, an arch frame fixed on the base, a forward extension frame and an unlocking frame, wherein a first cylinder and a pulley are fixed on the base, a second cylinder and a third cylinder are fixed on both inner sides of the arch frame, a fourth cylinder is fixed on the forward extension frame, and a fifth cylinder is fixed on the unlocking frame, a stopper is installed on the extension rod of the first cylinder, a force sensor and an auxiliary tool ball head are installed on the extension rods of the second cylinder, the third cylinder and the fourth cylinder, one end of a traction rope passing through the pulley is fixed on the stopper of the first cylinder, and the other end is fixed on the seat back; an angle sensor is installed on the seat back, and in a test state, the seat is installed on the base and placed above the first cylinder, the second cylinder and the third cylinder are placed on the left and right sides of the seat back, the fourth cylinder is placed in front of the seat back, the fifth cylinder is placed above the seat back recliner handle, and the extension rod of the fifth cylinder is connected to the seat back recliner handle; Also included is a controller, a pressure regulating valve and a pressure reducing valve to control the first cylinder, the second cylinder, the third cylinder, the fourth cylinder and the fifth cylinder; The following steps are involved: S1: Install the seat on the base, connect one end of the traction rope to the seat back, connect the fifth cylinder to the seat back recliner handle, and turn on the controller; S2: The extension rod of the fifth cylinder retracts, the seat back recliner handle opens, and the extension rod of the first cylinder retracts, driving the seat back to recline; S3: When the angle sensor installed at the headrest rod of the seat back reaches the set value, the extension rod of the fifth cylinder returns to its position and the seat back recliner handle is locked; S4: The extension rod of the fifth cylinder retracts, the seat back recliner handle opens, and the extension rod of the first cylinder extends, driving the seat back to its original position; S5: The extension rod of the fifth cylinder returns to its original position, the seat back recliner handle is locked, the extension rod of the fourth cylinder extends, applies a set pressure to the seat back, and then retracts; S6: The second and third cylinders extend alternately to apply a set pressure to the side of the seat back, and then retract; S7: Repeat steps S1-S6 to perform a seat back recliner fatigue test.

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