A durability testing device for the lateral movement assembly of a new energy vehicle seat

Abstract

This invention discloses a durability testing device for a lateral sliding component of a new energy vehicle seat, relating to the field of mechanical component testing. It includes a base, on which guide rails and a first cylinder are fixedly mounted symmetrically distributed along the base. A moving component is slidably connected between the guide blocks of each guide rail. The telescopic end of the first cylinder is fixedly connected to one side of the moving component. A fixed frame symmetrically distributed along the base is fixedly mounted in the middle of the base, used for laterally fixing the lateral sliding component to be tested. This invention, through the combination of long and short counterweight plates, flexibly sets full-load and unload states, achieving stepless load adjustment to adapt to the testing needs of different vehicle models and different passenger weights. Simultaneously, by using a lifting mechanism to lift the long counterweight plate forward, it achieves an asymmetric dynamic load cycle of "forward pushing to unload, backward sliding to full load," realistically simulating actual usage conditions and significantly improving the representativeness and predictive accuracy of the test results.

Description

Technical Field

[0001] This invention relates to the field of testing mechanical components, and more particularly to a durability testing device for the lateral movement assembly of a new energy vehicle seat. Background Technology

[0002] In the manual lateral adjustment of seats in new energy vehicles, users must first operate the unlock lever to release the lock before applying force to move the seat. In actual use, there is a significant difference in the load applied to the lateral adjustment component between forward and backward adjustments: when moving backward, the occupant usually maintains a seated posture, relying on back support or gravity to slide naturally, and the lateral adjustment component bears a near-full static pressure; while when moving forward, the user needs to lean forward, relieve pressure on the buttocks, and form a "push-support-slide" mechanical chain by pushing off the ground with their feet and holding the steering wheel, at which point the effective load acting on the lateral adjustment component is significantly reduced. This asymmetrical dynamic characteristic of light load when pushing forward and heavy load when sliding backward is a key factor affecting the wear mode and fatigue life of the lateral adjustment component.

[0003] However, most durability testing devices currently used in the industry have significant drawbacks: they either perform reciprocating motion under no-load conditions, completely ignoring the impact of load; or they apply a constant counterweight throughout the entire test cycle, failing to distinguish the load differences between forward and backward movement. While such testing methods can verify basic functions, they deviate severely from real-world usage scenarios, resulting in a disconnect between test lifespan and actual vehicle performance, making it difficult to effectively guide product design optimization and quality control.

[0004] Therefore, there is an urgent need for a durability testing device for the lateral movement components of new energy seats that can dynamically switch load states and simulate forward-pushing unloading and backward-sliding full-load conditions respectively. Summary of the Invention

[0005] To overcome the shortcomings of existing durability tests for new energy vehicle seat lateral movement components that deviate from real-world usage scenarios, this invention provides a durability testing device for new energy vehicle seat lateral movement components.

[0006] A durability testing device for a new energy vehicle seat lateral shift assembly includes a base, on which guide rails and a first cylinder are fixedly mounted symmetrically distributed along the base. A moving assembly is slidably connected between the guide blocks of each guide rail. The telescopic end of the first cylinder is fixedly connected to one side of the moving assembly. A fixing frame symmetrically distributed along the base is fixedly mounted in the middle of the base. The fixing frame is used to horizontally fix the lateral shift assembly to be tested. A seat plate is fixedly connected in the middle of the moving assembly. Before testing, the seat plate is fixedly connected to the lateral shift assembly to be tested. An adjusting plate symmetrically distributed along the seat plate is fixedly mounted on the top of the seat plate. An arbitrary number of long and short counterweight plates are placed between each adjusting plate. A lifting mechanism for lifting all the long counterweight plates is provided between the symmetrically distributed fixing frames.

[0007] As an improvement to the above solution, the base has equally spaced adjustment slots for adjusting the installation positions of the guide rail, the first cylinder, and the fixing frame.

[0008] As an improvement to the above solution, the moving component includes two first adjustment frames, one at the front and one at the back. The first adjustment frames are fixedly connected to the guide block of the guide rail. Connecting plates are provided on both the left and right sides between the two first adjustment frames. A second adjustment frame is provided in the middle of the first adjustment frames. A limit plate is provided on the second adjustment frame.

[0009] As an improvement to the above solution, the transverse component includes a slider and a slide rail, with the slide rail being transversely placed between the symmetrically distributed fixed frames, and the slider sliding within the slide rail.

[0010] As an improvement to the above solution, the lifting mechanism includes an adjusting block. The fixed frame has inverted T-shaped slots symmetrically distributed along the fixed frame. The adjusting block is slidably installed between the inverted T-shaped slots of the fixed frame. A mounting frame is fixedly connected between adjacent adjusting blocks on the same side. A motor is fixedly installed inside the mounting frame. A lead screw is fixedly connected to the output end of the motor. The lead screw is rotatably connected to the adjacent mounting frame on the same side. A pushing block symmetrically distributed along the lead screw is threadedly connected to the lead screw. The pushing block is slidably connected to the adjacent mounting frame on the same side. The pushing block is rotatably connected to a first lifting frame via a connecting rod. The adjacent mounting frame on the same side of the first lifting frame is slidably connected. The first lifting frame is provided with an adjusting assembly for adjusting to initial contact with the long counterweight plate.

[0011] As an improvement to the above solution, pressure sensors symmetrically distributed along the base are fixedly installed on the base. The first cylinder and the motor are electrically connected to the pressure sensors through a control module. The first adjustment bracket moves to contact the pressure sensor on the same side.

[0012] As an improvement to the above solution, a third adjustment frame is also included. The third adjustment frame is fixedly installed on the first adjustment frame on the front side. A fourth adjustment frame is fixedly installed on the third adjustment frame. A second cylinder is fixedly installed on the fourth adjustment frame. The telescopic end of the second cylinder has a rope-tying hole. A locking rod is provided on the side of the seat plate near the rope-tying hole.

[0013] As an improvement to the above solution, the adjustment component includes a fixed frame corresponding to the first lifting frame. The fixed frame is fixedly connected to the corresponding first lifting frame. An adjustment platform is slidably connected to the fixed frame. Screws symmetrically distributed along the fixed frame are rotatably connected to the fixed frame. The screws are threadedly connected to the adjustment platform adjacent to the same side.

[0014] As an improvement to the above solution, a limiting component is also provided on the adjusting platform. The limiting component includes a second lifting frame corresponding to the adjusting platform. The second lifting frame is slidably connected to the corresponding adjusting platform. The adjusting platform is slidably connected to limiting blocks symmetrically distributed along the adjusting platform. The limiting blocks and the second lifting frame are press-fitted by a wedge-shaped pressing surface. A spring is fixed between the limiting blocks and the adjusting platform.

[0015] The present invention has the following advantages:

[0016] 1. This invention uses a combination of long and short counterweight plates to flexibly set full load and unload states, achieving stepless load adjustment to suit the testing needs of different vehicle models and passenger weights. At the same time, the lifting mechanism raises the long counterweight plate forward, realizing an asymmetric dynamic load cycle of "forward unloading and backward full loading", which truly simulates actual usage conditions and greatly improves the representativeness and prediction accuracy of test results.

[0017] 2. This invention uses an adjustable second cylinder and a pull rope to automatically simulate manual unlocking, preventing the lateral movement component from being locked during testing. Furthermore, the limiting component automatically locks the adjusting screw under impact via a wedge-shaped pressing surface, preventing loosening due to vibration and ensuring repeatability accuracy in long-term testing. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the guide rail, lateral movement assembly, and seat plate of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the components of the present invention, including the fixing frame, the transverse moving assembly, and the seat plate.

[0021] Figure 4 This is a three-dimensional structural diagram of the first adjusting frame, connecting plate, and second adjusting frame of the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the transverse movement assembly, seat plate, and pressure sensor of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the lead screw, push block, and connecting rod components of the present invention.

[0024] Figure 7 This is a three-dimensional structural diagram of the third and fourth adjustment frames and other components of the present invention.

[0025] Figure 8 This is a three-dimensional structural diagram of the first lifting frame, fixed frame, and adjustment platform of the present invention.

[0026] Figure 9 This is a three-dimensional structural diagram of the components of the present invention, such as the fixing frame, adjusting platform, and screw.

[0027] Figure 10 This is a three-dimensional structural diagram of the components such as the fixing frame and the limiting block of the present invention.

[0028] Figure 11 This is a three-dimensional structural diagram of the second lifting frame, limiting block, and spring components of the present invention.

[0029] Labels in the diagram: 101. Base; 102. Adjustment slot; 103. Guide rail; 104. First cylinder; 105. Moving assembly; 1051. First adjusting frame; 1052. Connecting plate; 1053. Second adjusting frame; 1054. Limiting plate; 106. Fixing frame; 107. Lateral movement assembly; 108. Seat plate; 109. Pressure sensor; 110. Adjusting block; 111. Mounting bracket; 112. Electric... Machine, 113, lead screw, 114, push block, 115, connecting rod, 116, first lifting frame, 117, adjusting plate, 118, counterweight plate, 201, third adjusting frame, 202, fourth adjusting frame, 203, second cylinder, 204, locking rod, 301, fixed frame, 302, adjusting table, 303, screw, 401, second lifting frame, 402, limit block, 403, extrusion surface, 404, spring. Detailed Implementation

[0030] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0031] Example 1: This invention relates to a durability testing device for the lateral sliding assembly of a new energy vehicle seat, particularly suitable for simulating the asymmetric dynamic load applied to the lateral sliding mechanism when a human adjusts the fore-and-aft position of the seat in real driving scenarios. Traditional testing methods often employ constant load or no-load reciprocating motion, which cannot reflect the mechanical differences of "light load when pushing forward and heavy load when sliding backward" in actual use, resulting in significant deviations between test results and actual vehicle lifespan. This device innovatively integrates a variable counterweight system, an intelligent lifting mechanism, and an automatic unlocking module to achieve high-fidelity cyclic durability testing of the lateral sliding assembly 107 under two typical working conditions: light-load forward pushing and full-load backward sliding.

[0032] like Figures 1 to 6As shown, the testing device includes a base 101, on which guide rails 103 and a first cylinder 104 are fixedly mounted, symmetrically distributed along the left and right sides. The guide rails 103 are high-precision linear slide rails, with a moving component 105 slidably connected between their guide blocks to support the seat plate 108 and achieve smooth reciprocating motion. The telescopic end of the first cylinder 104 is fixedly connected to one side of the moving component 105, serving as the main drive source and providing linear power to simulate human pushing and pulling forces. A fixed frame 106, symmetrically distributed along the front and back of the base 101, is fixedly mounted in the middle area of ​​the base 101 to laterally fix the transverse moving component 107 to be tested. The transverse moving component 107 typically includes a slider and a slide rail, with the slide rail placed laterally between the two fixed frames 106. The slider can slide freely within the slide rail, forming the core transmission pair for the lateral adjustment of the seat. The seat plate 108 is fixedly connected to the middle of the moving component 105. Before testing, the seat plate 108 must be rigidly connected to the slider of the transverse moving component 107 to ensure synchronized movement.

[0033] In addition, the base 101 is provided with equally spaced adjustment slots 102. Components such as the guide rail 103, the first cylinder 104, and the fixing frame 106 can be adjusted along the adjustment slots 102 to adapt to the transverse moving assembly 107 of different sizes. The moving assembly 105 itself is also highly flexible: it includes two first adjustment frames 1051, one at the front and one at the back, which are fixedly connected to the guide blocks of the guide rail 103; connecting plates 1052 are provided on both the left and right sides between the two first adjustment frames 1051; a second adjustment frame 1053 is provided in the middle, and a limit plate 1054 is provided on the second adjustment frame 1053. The connecting plate 1052 and the second adjustment frame 1053 can be adjusted left and right, and the limit plate 1054 can be adjusted forward and backward, realizing multi-dimensional fine adjustment of the position of the seat plate 108 to ensure precise docking with the transverse moving assembly 107.

[0034] To achieve dynamic load switching, a lifting mechanism is provided between the front and rear fixed frames 106. This mechanism includes adjusting blocks 110. The fixed frames 106 have inverted T-shaped slots symmetrically distributed along their front and rear sides. The adjusting blocks 110 are slidably installed between these inverted T-shaped slots and can be finely adjusted left and right to accommodate lateral movement components 107 of different widths. A mounting frame 111 is fixedly connected between adjacent adjusting blocks 110 on the same side. A motor 112 is fixedly connected inside the mounting frame 111, and a lead screw 113 is fixedly connected to the output end of the motor 112. The lead screw 113 is rotatably connected to the mounting frame 111. Push blocks 114, symmetrically distributed along their front and rear sides, are threaded onto the lead screw 113 and are slidably connected to the mounting frame 111. The push blocks 114 are rotatably connected to a first lifting frame 116 via a connecting rod 115. The first lifting frame 116 is also slidably connected to the mounting frame 111 and can be vertically raised and lowered.

[0035] Adjustable plates 117 are fixedly installed on both the front and rear sides of the top of the seat plate 108, symmetrically distributed along its left and right sides. An open counterweight cavity is formed between the two adjustable plates 117, which can hold any number and combination of long counterweight plates 118 and short counterweight plates according to testing requirements. The short counterweight plates are shorter, covering only the middle area of ​​the seat plate 108; the long counterweight plates 118 are longer, extending into the range of the lifting mechanism. By adjusting the number of both, two states, "full load" (all long counterweight plates 118 and short counterweight plates) and "unloaded" (short counterweight plates only), can be steplessly set to simulate the actual load when a person is sliding backward and leaning forward, respectively.

[0036] like Figure 8 and Figure 9 As shown, to address the initial alignment issue of the lifting mechanism, the lifting mechanism also includes an adjustment assembly mounted on the first lifting frame 116 for precise alignment and contact with the bottom longest counterweight plate 118. This assembly includes a fixed frame 301 corresponding to the first lifting frame 116, which is fixedly connected within the first lifting frame 116. An adjustment platform 302 is slidably connected to the fixed frame 301 along its vertical direction. Screws 303, symmetrically distributed along its front and rear, are rotatably connected to the fixed frame 301, and are threadedly connected to adjacent adjustment platforms 302. If the bottom longest counterweight plate 118 is not in contact with the adjustment platform 302 in the initial state, the screws 303 can be manually rotated to raise or lower the adjustment platform 302 until it just touches the bottom surface of the bottom longest counterweight plate 118, ensuring effective transmission of the lifting action.

[0037] Pressure sensors 109, symmetrically distributed along the base 101, are fixedly installed on the base 101, located at the front and rear limits of the travel stroke. The first cylinder 104 and the motor 112 are both electrically connected to the pressure sensors 109 through the control module. When the first adjusting frame 1051 moves backward to contact the rear pressure sensor 109, the sensor sends a signal, and the control module immediately commands the motor 112 to rotate forward, driving the lead screw 113 to rotate, causing the two pushing blocks 114 to move towards each other. The pushing blocks 114 lift the first lifting frame 116 through the connecting rod 115, thereby lifting all the long counterweight plates 118 upward as a whole, separating them from the seat plate 108, so that the transverse component 107 achieves a "load reduction" state, simulating the light-load forward push condition after the human body leans forward and the buttocks are decompressed. Then, the first cylinder 104 is controlled to retract forward to achieve the forward push test. Conversely, when the first adjusting frame 1051 moves forward to contact the front pressure sensor 109, the control module commands the motor 112 to reverse, pushing the block 114 to move backward, causing the first lifting frame 116 to descend, and the long counterweight plate 118 to fall again, so that the lateral movement component 107 returns to the "full load" state, simulating the backward sliding condition of a human body sitting and under gravity loading. Then, the first cylinder 104 is controlled to extend backward to realize the backward push test. The lateral movement component 107 repeats the above reciprocating movement, and each reciprocation is recorded as one test, for a total of 15,000 tests.

[0038] like Figure 7 As shown, to ensure that the transverse component 107 remains unlocked during testing (similar to manually pulling a lever), the testing device also includes a third adjustment frame 201, fixedly mounted on the front first adjustment frame 1051; a fourth adjustment frame 202 is fixedly mounted on the third adjustment frame 201, and its height is adjustable; a second cylinder 203 is fixedly mounted on the fourth adjustment frame 202, and its horizontal position is also adjustable. The telescopic end of the second cylinder 203 has a rope-attaching hole, and a locking lever 204 is located near this side of the seat plate 108. Before testing, the position of the second cylinder 203 is adjusted up, down, left, and right to naturally connect the locking lever 204 to the telescopic rod. Activating the second cylinder 203 causes its telescopic rod to shorten upwards, pulling the locking lever 204 forward via the rope, thus keeping the transverse component 107 continuously unlocked and preventing test distortion or mechanism jamming due to locking.

[0039] like Figure 10 and Figure 11 As shown, during the test, when the long counterweight plate 118 on the seat plate 108 is fully lowered, the instantaneous impact force may act on the screw 303 through the adjustment platform 302, which may loosen the screw 303 and affect the next lifting. To further improve reliability, a limit component is also provided on the adjustment platform 302. This component includes a second lifting frame 401, which is slidably connected to the adjustment platform 302 in the vertical direction; a limit block 402 slidably connected to the adjustment platform 302 is symmetrically distributed along its front and rear. The limit block 402 and the second lifting frame 401 are engaged by a wedge-shaped pressing surface 403, and a spring 404 is fixed between the limit block 402 and the adjustment platform 302. During the initial position adjustment of the adjustment components, the bottom long counterweight plate 118 will first contact the second lifting frame 401 until the second lifting frame 401 is pressed down and embedded into the adjustment table 302 by all the long counterweight plates 118 and short counterweight plates. The second lifting frame 401 moves inward by pressing the wedge-shaped surface against the limiting block 402, thereby locking the screw 303 to prevent it from vibrating and loosening due to the impact force at the moment of lowering, and ensuring the accuracy of the next lifting position.

[0040] In summary, this embodiment constructs a durability testing platform that highly replicates real human-computer interaction through four core mechanisms: dynamic counterweight, intelligent lifting, automatic unlocking, and multi-dimensional adjustment. It not only accurately reproduces the asymmetric load cycle of forward-pushing light load and rearward-sliding heavy load, but also possesses adaptive adjustment, anti-loosening protection, and universal compatibility capabilities, significantly enhancing the scientific rigor and engineering value of the durability verification of the 107 lateral sliding component for new energy vehicle seats.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A durability testing device for a new energy vehicle seat lateral movement assembly, characterized in that: The device includes a base (101), on which guide rails (103) symmetrically distributed along the base (101) and a first cylinder (104) are fixedly mounted. A moving component (105) is slidably connected between the guide blocks of each guide rail (103). The telescopic end of the first cylinder (104) is fixedly connected to one side of the moving component (105). A fixing frame (106) symmetrically distributed along the base (101) is fixedly mounted in the middle of the base (101). The fixing frame (106) is used to horizontally fix the transverse moving component to be tested. (107) A seat plate (108) is fixedly connected in the middle of the moving component (105). Before the test, the seat plate (108) is fixedly connected to the transverse component (107) to be tested. An adjustment plate (117) is fixedly installed on the top of the seat plate (108) and is symmetrically distributed along the seat plate (108). An arbitrary number of long counterweight plates (118) and short counterweight plates are placed between each adjustment plate (117). A lifting mechanism for lifting all the long counterweight plates (118) is provided between the symmetrically distributed fixed frames (106). The base (101) has equally spaced adjustment slots (102) for adjusting the installation positions of the guide rail (103), the first cylinder (104) and the fixing frame (106). The lifting mechanism includes an adjusting block (110). The fixed frame (106) has inverted T-shaped slots symmetrically distributed along its length. The adjusting block (110) is slidably mounted between the inverted T-shaped slots of the fixed frame (106). A mounting frame (111) is fixedly connected between adjacent adjusting blocks (110) on the same side. A motor (112) is fixedly connected inside the mounting frame (111). A lead screw (113) is fixedly connected to the output end of the motor (112). The lead screw (113) is connected to the mounting frame (111) on the same side. The lead screw (113) is rotatably connected to a push block (114) symmetrically distributed along the lead screw (113). The push block (114) is slidably connected to the mounting frame (111) on the same side. The push block (114) is rotatably connected to a first lifting frame (116) via a connecting rod (115). The first lifting frame (116) is slidably connected to the mounting frame (111) on the same side. The first lifting frame (116) is provided with an adjustment component for adjusting to initial contact with the long counterweight plate (118).

2. The durability testing device for the transverse shift assembly of a new energy vehicle seat as described in claim 1, characterized in that: The moving component (105) includes two first adjustment frames (1051) at the front and rear. The first adjustment frame (1051) is fixedly connected to the guide block of the guide rail (103). A connecting plate (1052) is provided on both the left and right sides between the two first adjustment frames (1051). A second adjustment frame (1053) is provided in the middle of the first adjustment frame (1051). A limit plate (1054) is provided on the second adjustment frame (1053).

3. The durability testing device for the transverse shift assembly of a new energy vehicle seat as described in claim 2, characterized in that: The transverse component (107) includes a slider and a slide rail, the slide rail being transversely placed between the symmetrically distributed fixtures (106), and the slider sliding within the slide rail.

4. The durability testing device for the transverse shift assembly of a new energy vehicle seat as described in claim 3, characterized in that: Pressure sensors (109) are fixedly installed on the base (101) and are symmetrically distributed along the base (101). The first cylinder (104) and the motor (112) are electrically connected to the pressure sensors (109) through the control module. The first adjustment frame (1051) moves to contact the pressure sensors (109) on the same side.

5. The durability testing device for the transverse shift assembly of a new energy vehicle seat as described in claim 4, characterized in that: It also includes a third adjustment frame (201), which is fixedly installed on the first adjustment frame (1051) on the front side. A fourth adjustment frame (202) is fixedly installed on the third adjustment frame (201), and a second cylinder (203) is fixedly installed on the fourth adjustment frame (202). The telescopic end of the second cylinder (203) has a rope-tying hole, and a locking rod (204) is provided on the side of the seat plate (108) near the rope-tying hole.

6. The durability testing device for the transverse shift assembly of a new energy vehicle seat as described in claim 5, characterized in that: The adjustment assembly includes a fixed frame (301) corresponding to the first lifting frame (116). The fixed frame (301) is fixedly connected to the corresponding first lifting frame (116). An adjustment platform (302) is slidably connected to the fixed frame (301). A screw (303) symmetrically distributed along the fixed frame (301) is rotatably connected to the fixed frame (301). The screw (303) is threadedly connected to the adjustment platform (302) adjacent on the same side.

7. The durability testing device for the transverse shift assembly of a new energy vehicle seat as described in claim 6, characterized in that: It also includes a limiting component disposed on the adjusting platform (302). The limiting component includes a second lifting frame (401) corresponding to the adjusting platform (302). The second lifting frame (401) is slidably connected to the corresponding adjusting platform (302). The adjusting platform (302) is slidably connected to a limiting block (402) symmetrically distributed along the adjusting platform (302). The limiting block (402) and the second lifting frame (401) are pressed together by a wedge-shaped pressing surface (403). A spring (404) is fixed between the limiting block (402) and the adjusting platform (302).

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