Seat chassis distance detection device

Abstract

The invention discloses a seat chassis distance detection device, and relates to the technical field of seat detection. The device comprises a detection box, wherein a control panel is arranged on the front surface of the detection box; a detection mechanism is arranged in an inner cavity of the detection box and comprises a guide rail fixedly connected to the inner cavity of the detection box through a mounting rod, a sliding block slidably connected with an inner ring of the guide rail, a mounting plate fixedly connected with one side of the sliding block through a mounting block, and a laser distance measuring sensor fixedly connected with one side of the mounting plate. A closed-loop guide rail drives a laser distance measuring sensor to automatically and circularly scan along the contour of a chassis, height data of four corners are acquired in real time, a height difference is quickly calculated in combination with a control panel, detection or leveling mode switching is achieved through single-motor driving, and a threaded pipe is directly driven to ascend and descend to compensate the height difference. Full-automatic closed-loop control over detection, calculation and leveling is achieved, no leveling equipment needs to be additionally arranged, and equipment investment and operation steps are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of seat detection, and in particular relates to a seat chassis distance detection device. Background Art

[0002] With the rapid development of industries like automotive and furniture manufacturing, seats, as a core component, face increasing pressure on user comfort and safety. Seat chassis installation requires consistent height and high levelness across multiple positions. Traditional inspection methods, which rely on manual vernier calipers or single-point laser rangefinders, suffer from low measurement efficiency, poor multi-directional synchronization, and the need for repeated manual calibration. These methods struggle to meet the high-precision requirements of industrial mass production.

[0003] Existing devices only perform unidirectional detection and are unable to measure the multi-directional height difference at all four corners of the chassis. Furthermore, the leveling mechanism is hydraulically driven, resulting in a complex and costly structure, making it difficult to adapt to the production needs of small batches of multiple seat models. Furthermore, existing devices often separate the detection and leveling functions, requiring separate equipment to operate. This results in a time-consuming detection and leveling process, impacting production efficiency. To address these issues, we have developed a seat chassis distance detection device to address these issues. Summary of the Invention

[0004] The purpose of the present invention is to provide a seat chassis distance detection device, which solves the problems of incomplete detection coverage and low leveling efficiency of the seat chassis distance detection device in the prior art through the cooperation of the detection mechanism and the adjustment mechanism.

[0005] To solve the above technical problems, the present invention is implemented through the following technical solutions.

[0006] The present invention is a seat chassis distance detection device, comprising a detection box, a control panel being provided on the front of the detection box; a detection mechanism being provided in an inner cavity of the detection box, the detection mechanism comprising a guide rail fixedly connected to the inner cavity of the detection box via a mounting rod, a slider slidably connected to the inner ring of the guide rail, a mounting plate fixedly connected to one side of the slider via a mounting block, and a laser ranging sensor fixedly connected to one side of the mounting plate; an adjustment mechanism being provided in the inner cavity of the detection box, the adjustment mechanism comprising a threaded rod rotatably connected to the inner cavity of the detection box via a bearing seat, a first gear fixedly connected to the surface of the threaded rod, and a threaded tube threadedly connected to the surface of the threaded rod.

[0007] The present invention is further configured such that a drive motor is fixedly connected to one side of the mounting plate, a fixed sleeve is fixedly connected to an output shaft of the drive motor, and a drive rod is slidably connected to an inner cavity of the fixed sleeve.

[0008] The present invention is further configured such that a second gear is fixedly connected to the surface of the drive rod, a rack is fixedly connected to the outer ring of the guide rail, the rack is laid along the entire length of the outer ring of the guide rail, and meshes with the second gear to ensure smooth movement of the slider.

[0009] The present invention is further configured such that a spline is fixedly connected to the surface of the drive rod, and a keyway adapted to the spline is provided on the inner side of the fixed sleeve. The spline and the keyway cooperate with each other to achieve axial sliding of the drive rod in the fixed sleeve and lossless transmission of torque.

[0010] The present invention is further configured such that an electric push rod is fixedly connected to one side of the mounting plate, an output end of the electric push rod is fixedly connected to a drive frame, a ball bearing is provided on the inside of the drive frame, and the electric push rod engages the second gear with the rack or with the first gear through the ball bearing in the drive frame, thereby facilitating the realization of measurement and adjustment functions with a single power source and reducing economic costs.

[0011] The present invention is further configured such that the number of the first gears is four, one end of the threaded tube extends to the outside of the detection box, the first gear drives the threaded tube to move through the threaded rod, and the horizontality of the chassis is adjusted by the movement of the threaded tube.

[0012] The present invention is further configured such that a through groove compatible with the laser ranging sensor is opened on the surface of the detection box, a baffle is fixedly connected to the inner cavity of the detection box through a fixed column, and a transparent acrylic dust-proof window is embedded in the through groove to prevent dust from affecting the measurement accuracy of the laser ranging sensor.

[0013] The present invention has the following beneficial effects.

[0014] 1. This invention uses a closed-loop guide rail to drive a laser ranging sensor to automatically scan in a circular motion along the chassis contour, acquiring real-time height data for the four corners. Combined with a control panel, it quickly calculates the height difference. A single motor drives the sensor to switch between detection and leveling modes, directly driving the threaded pipe up and down to compensate for the height difference. This achieves fully automatic closed-loop control of detection, calculation, and leveling, eliminating the need for additional leveling equipment and reducing equipment investment and operational steps.

[0015] 2. The present invention adopts a single power source dual-function drive. The driving motor transmits the driving rod through the spline and keyway, and the electric push rod controls the meshing and switching of the second gear and the rack or the first gear, which not only ensures lossless transmission of torque but also avoids interference from multiple motors, realizes seamless switching of measurement and adjustment functions under single motor drive, and improves equipment utilization.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0018] Figure 1 The figure is a three-dimensional diagram of a seat chassis distance detection device.

[0019] Figure 2 This is a diagram showing the coordination of the second gear and rack in a seat chassis distance detection device.

[0020] Figure 3 A diagram showing the coordination of the guide rail and slider in a seat chassis distance detection device.

[0021] Figure 4 This diagram shows the coordination of the electric push rod, drive frame, and ball bearings in a seat chassis distance detection device.

[0022] Figure 5 This is a diagram showing the coordination of a fixed sleeve and a drive rod in a seat chassis distance detection device.

[0023] In the accompanying drawings: 1. Detection box; 2. Control panel; 3. Guide rail; 4. Slider; 5. Mounting plate; 6. Laser ranging sensor; 7. Threaded rod; 8. First gear; 9. Threaded tube; 10. Drive motor; 11. Fixed sleeve; 12. Drive rod; 13. Second gear; 14. Spline; 15. Keyway; 16. Electric push rod; 17. Drive frame; 18. Ball bearing; 19. Through slot; 20. Baffle; 21. Rack. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Example 1

[0026] See also Figure 1-Figure 5 The present invention is a seat chassis distance detection device, comprising a detection box 1, with a control panel 2 provided on the front of the detection box 1; a detection mechanism is provided in the inner cavity of the detection box 1, the detection mechanism includes a guide rail 3 fixedly connected to the inner cavity of the detection box 1 through a mounting rod, a slider 4 slidingly connected to the inner ring of the guide rail 3, a mounting plate 5 fixedly connected to one side of the slider 4 through a mounting block, and a laser ranging sensor 6 fixedly connected to one side of the mounting plate 5; an adjustment mechanism is provided in the inner cavity of the detection box 1, the adjustment mechanism includes a threaded rod 7 rotatably connected to the inner cavity of the detection box 1 through a bearing seat, a first gear 8 fixedly connected to the surface of the threaded rod 7, and a threaded tube 9 threadedly connected to the surface of the threaded rod 7.

[0027] Further supplement: The guide rail 3 is an annular closed-loop structure and is fixed to the inner cavity of the detection box 1 through four corner mounting rods. The laser ranging sensor 6 is connected to the mounting plate 5 through a universal adjustment frame to achieve fine-tuning of plus or minus fifteen degrees to ensure vertical projection to the chassis detection point. The second gear 13 and the first gear 8 are not in the same plane to avoid mutual interference between the second gear 13 and the first gear 8 during the movement of the laser ranging sensor 6 along the guide rail 3. The laser ranging sensor 6 scans the height data of the four corners of the chassis along the closed-loop guide rail 3. The control panel 2 calculates the height difference and then drives the four threaded tubes 9 to independently rise and fall to compensate for the height difference, with high leveling accuracy.

[0028] Example 2

[0029] See also Figure 1-Figure 5 On the basis of Example 1, a drive motor 10 is fixedly connected to one side of the mounting plate 5, and the output shaft of the drive motor 10 is fixedly connected to a fixed sleeve 11. The inner cavity of the fixed sleeve 11 is slidably connected to a drive rod 12, and the surface of the drive rod 12 is fixedly connected to a second gear 13. The outer ring of the guide rail 3 is fixedly connected to a rack 21, and the surface of the drive rod 12 is fixedly connected to a spline 14. A keyway 15 that matches the spline 14 is provided on the inner side of the fixed sleeve 11. An electric push rod 16 is fixedly connected to one side of the mounting plate 5, and the output end of the electric push rod 16 is fixedly connected to a drive frame 17. A ball 18 is provided on the inner side of the drive frame 17. There are four first gears 8. One end of the threaded tube 9 passes through the outside of the detection box 1. A through groove 19 that matches the laser ranging sensor 6 is provided on the surface of the detection box 1. The inner cavity of the detection box 1 is fixedly connected to a baffle 20 through a fixed column.

[0030] Further supplement: The rack 21 is laid along the entire length of the outer ring of the guide rail 3 and meshes with the second gear 13 to ensure the smooth movement of the slider 4. The spline 14 and the keyway 15 cooperate with each other to achieve axial sliding of the drive rod 12 in the fixed sleeve 11 and lossless transmission of torque. The electric push rod 16 meshes the second gear 13 with the rack 21 or with the first gear 8 through the ball 18 in the drive frame 17, which is convenient for realizing measurement and adjustment functions with a single power source and reducing economic costs. The first gear 8 drives the threaded tube 9 to move through the threaded rod 7, and the horizontality of the chassis is adjusted by moving the threaded tube 9. A transparent acrylic dust-proof window is embedded in the through groove 19 to prevent dust from affecting the measurement accuracy of the laser ranging sensor 6.

[0031] The working principle of the present invention is as follows: the drive motor 10 is started, and the output shaft drives the drive rod 12 to rotate through the spline 14 and keyway 15 structure of the fixed sleeve 11, so that the second gear 13 engages with the rack 21 on the outer ring of the guide rail 3. The gear and rack 21 drive the slider 4 to circulate along the closed-loop guide rail 3, driving the laser ranging sensor 6 to scan the four corners of the chassis in turn. The laser ranging sensor 6 projects a laser onto the chassis through the through slot 19, and the real-time height data is fed back to the control panel 2.

[0032] The control panel 2 calculates the height difference of the four corners of the chassis. If the tolerance is exceeded, the electric push rod 16 is started. The electric push rod 16 pushes the driving frame 17, and moves the second gear 13 downward to disengage the rack 21 through the ball 18, and engages with the first gear 8 at the target position. The driving motor 10 drives the threaded rod 7 to rotate through the second gear 13 and the first gear 8, drives the threaded tube 9 to move up and down, and compensates the maximum height difference to within the tolerance range. After completion, the electric push rod 16 is reset, and the second gear 13 re-engages the rack 21 to continue the operation of the next detection point. The above adjustment process is repeated until the height difference of the four corners meets the set requirements.

[0033] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A seat chassis distance detection device, comprising a detection box (1), characterized in that: The front of the detection box (1) is provided with a control panel (2); The inner cavity of the detection box (1) is provided with a detection mechanism, which includes a guide rail (3) fixedly connected to the inner cavity of the detection box (1) via a mounting rod, a slider (4) slidably connected to the inner ring of the guide rail (3), a mounting plate (5) fixedly connected to one side of the slider (4) via a mounting block, and a laser distance sensor (6) fixedly connected to one side of the mounting plate (5); The inner cavity of the detection box (1) is provided with an adjustment mechanism, which includes a threaded rod (7) rotatably connected to the inner cavity of the detection box (1) through a bearing seat, a first gear (8) fixedly connected to the surface of the threaded rod (7), and a threaded tube (9) threadedly connected to the surface of the threaded rod (7).

2. The seat chassis distance detection device according to claim 1, characterized in that: A drive motor (10) is fixedly connected to one side of the mounting plate (5), an output shaft of the drive motor (10) is fixedly connected to a fixed sleeve (11), and an inner cavity of the fixed sleeve (11) is slidably connected to a drive rod (12).

3. The seat chassis distance detection device according to claim 2, characterized in that: The surface of the driving rod (12) is fixedly connected to a second gear (13), and the outer ring of the guide rail (3) is fixedly connected to a rack (21).

4. The seat chassis distance detection device according to claim 2, characterized in that: A spline (14) is fixedly connected to the surface of the driving rod (12), and a keyway (15) adapted to the spline (14) is provided on the inner side of the fixing sleeve (11).

5. The seat chassis distance detection device according to claim 1, characterized in that: One side of the mounting plate (5) is fixedly connected to an electric push rod (16), an output end of the electric push rod (16) is fixedly connected to a drive frame (17), and a ball bearing (18) is provided inside the drive frame (17).

6. The seat chassis distance detection device according to claim 1, characterized in that: The number of the first gears (8) is four, and one end of the threaded tube (9) passes through the outside of the detection box (1).

7. The seat chassis distance detection device according to claim 1, characterized in that: A through slot (19) adapted to the laser distance measuring sensor (6) is provided on the surface of the detection box (1), and a baffle (20) is fixedly connected to the inner cavity of the detection box (1) via a fixing column.

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