A kind of automobile electric seat flexible shaft length detection equipment

Abstract

The utility model belongs to the technical field of detection equipment, concretely relates to a kind of automobile electric seat flexible shaft length detection equipment, including push plate feeding machine, the side wall of push plate feeding machine towards discharge port is fixedly connected with feed guide plate, the downside of feed guide plate is provided with rack, the top of rack is provided with limit mechanism, the limit mechanism includes the first baffle and second baffle of symmetrical arrangement, the both ends of first baffle and second baffle are symmetrically provided with a pair of guide rail, the outside of first baffle and second baffle is horizontally provided with expansion and contraction air cylinder, the discharge chute is arranged between first baffle and second baffle, the inside of discharge chute is slidably connected with push block, the bottom of rack is horizontally provided with linear module, the side of the top of rack away from limit mechanism is provided with length detection mechanism.The utility model has the beneficial effects that the accurate detection of the length of flexible shaft can be realized, and the detection efficiency can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to a device for testing the length of a flexible shaft in an electric car seat. Background Technology

[0002] As a core transmission component of the seat adjustment system, the flexible shaft of an automotive electric seat plays a crucial role in converting the rotational power of the motor into linear motion. Its structure typically consists of a flexible shaft core, a metal guide tube, and multiple protective layers. The shaft core surface is precision polished to reduce the coefficient of friction, while the inner wall of the guide tube is lined with arc-shaped ribs to enhance torsional strength. The outer spiral band and plastic coating provide wear resistance and corrosion protection. This design gives the flexible shaft both flexibility and rigidity, allowing it to adapt to the complex movement trajectory of the seat while withstanding the mechanical stress of long-term, high-frequency adjustments. To ensure the assembly accuracy of the flexible shaft, its length must typically be within specified tolerances before it can be used. Therefore, the length of the flexible shaft needs to be measured using inspection equipment during manufacturing.

[0003] Existing methods for measuring the length of flexible shafts mostly rely on projectors. This requires manual placement of the flexible shaft into the measurement area, followed by manual adjustment of the projector before measurement. This approach is inefficient and makes it difficult to guarantee accuracy. Utility Model Content

[0004] The purpose of this invention is to address the problem of low efficiency and low accuracy in existing flexible shaft measurement.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for detecting the length of a flexible shaft in an automotive electric seat includes a pusher loading machine. A feed guide plate is fixedly connected to the side wall of the pusher loading machine facing the discharge port. A frame is provided below the feed guide plate. A limiting mechanism is provided at the top of the frame. The limiting mechanism includes a first baffle and a second baffle symmetrically arranged. A pair of guide rails are symmetrically arranged at both ends of the first and second baffles. A tensioning cylinder is horizontally arranged on the outer sides of both the first and second baffles. A discharge trough is provided between the first and second baffles. A push block is slidably connected to the inner side of the discharge trough. A linear module is horizontally arranged at the bottom of the frame. The moving platform of the linear module is fixedly connected to the push block. A length detection mechanism is provided on the top of the frame away from the limiting mechanism. The length detection mechanism includes a first linear bearing and a second linear bearing coaxially arranged. A measuring pin is slidably connected between the first and second linear bearings. A first slotted photoelectric sensor and a second slotted photoelectric sensor are sequentially arranged on the side of the second linear bearing away from the first linear bearing.

[0007] Furthermore, the two ends of the measuring pin extend to the outside of the first linear bearing and the second linear bearing, respectively, and a spring is sleeved on the outside of the portion of the measuring pin located between the first linear bearing and the second linear bearing.

[0008] Furthermore, the first baffle and the second baffle are slidably connected to the guide rail, and the axial direction of the opening and closing cylinder is parallel to the sliding direction of the guide rail.

[0009] Furthermore, a downward pressure cylinder is vertically fixedly connected to the top of the frame, and a downward pressure plate is fixedly connected to the piston rod of the downward pressure cylinder horizontally. The downward pressure plate is located directly above the limiting mechanism.

[0010] Furthermore, a material discharge swing chute is rotatably connected to the bottom of the frame, and the material discharge swing chute is located at the bottom of the material discharge chute.

[0011] Furthermore, a pair of electric telescopic rods are symmetrically hinged to the two side walls of the material dropping swing chute, and the other end of the electric telescopic rods is hinged to the push plate feeding machine.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The present invention relates to a device for detecting the length of a flexible shaft in an electric car seat. By setting up a length detection mechanism, a push block, and a linear module, it can achieve accurate detection of the length of the flexible shaft and effectively improve detection efficiency.

[0014] 2. The present invention relates to a car electric seat flexible shaft length detection device, which, by setting up a push plate loading machine, a limiting mechanism and a material dropping swing groove, can realize automatic loading and unloading of flexible shafts, and can automatically classify good and bad products according to the detection results to avoid mixing of materials. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a flexible shaft length detection device for automotive electric seats according to this utility model.

[0016] Figure 2 This is a cross-sectional schematic diagram of the limiting mechanism of a flexible shaft detection device for an electric car seat according to the present invention.

[0017] Figure 3 This is a schematic diagram of a linear module mechanism for a flexible shaft length detection device for automotive electric seats according to this utility model.

[0018] Figure 4 This is a schematic diagram of the length detection mechanism of a flexible shaft detection device for an electric car seat according to the present invention.

[0019] In the diagram: 1. Push plate feeder; 2. Feed guide plate; 3. Limiting mechanism; 301. First baffle; 302. Second baffle; 303. Guide rail; 304. Push block; 4. Opening and closing cylinder; 5. Linear module; 6. Length detection mechanism; 601. Measuring pin; 602. First linear bearing; 603. Second linear bearing; 604. Spring; 605. First slotted photoelectric sensor; 606. Second slotted photoelectric sensor; 7. Lower pressure plate; 8. Lower pressure cylinder; 9. Material dropping swing groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4The automotive electric seat flexible shaft length detection device of this embodiment includes a pusher plate feeder 1. A feed guide plate 2 is fixedly connected to the side wall of the pusher plate feeder 1 facing the discharge port. A frame is provided on the lower side of the feed guide plate 2. A limiting mechanism 3 is provided on the top of the frame for limiting the flexible shaft. The limiting mechanism 3 includes a first baffle 301 and a second baffle 302 symmetrically arranged. A pair of guide rails 303 are symmetrically arranged at both ends of the first baffle 301 and the second baffle 302. A tensioning cylinder 4 is horizontally arranged on the outer side of the first baffle 301 and the second baffle 302. A discharge chute is provided between the first baffle 301 and the second baffle 302 for discharging. A push block 304 is slidably connected to the inner side of the slot. A linear module 5 is horizontally arranged at the bottom of the frame. The moving stage of the linear module 5 is fixedly connected to the push block 304. A length detection mechanism 6 is arranged on the top of the frame away from the limiting mechanism 3. It is used to detect the length of the flexible shaft. The length detection mechanism 6 includes a first linear bearing 602 and a second linear bearing 603 arranged coaxially. A measuring pin 601 is slidably connected between the first linear bearing 602 and the second linear bearing 603. A first slotted photoelectric sensor 605 and a second slotted photoelectric sensor 606 are arranged sequentially on the side of the second linear bearing 603 away from the first linear bearing 602. Before testing, the initial position of the linear module 5 is first calibrated using a reference axis of standard length. During calibration, the opening and closing cylinders 4 on both sides drive the first baffle 301 and the second baffle 302 to move towards each other along the guide rail 303 until the first baffle 301 and the second baffle 302 abut. At this time, the reference axis is placed in the gap between the first baffle 301 and the second baffle 302. Then, the linear module 5 drives the push block 304 to move towards the measuring pin 601 until the end of the reference axis abuts against the measuring pin 601, pushing the other end of the measuring pin 601 to move to the inside of the first slotted photoelectric sensor 605. At this time, the linear module 5 drives the push block 304 to start decelerating until the end of the measuring pin 601 just moves to the inside of the first slotted photoelectric sensor 605. When the second slotted photoelectric sensor 606 is blocked, the position of the pusher block 304 is at the initial position. During detection, the pusher plate feeder 1 pushes the flexible shaft to be detected onto the feed plate, causing the flexible shaft to roll down along the feed guide plate 2 into the gap between the first baffle 301 and the second baffle 302. Then, the linear module 5 drives the pusher block 304 to push the flexible shaft, thereby measuring the flexible shaft. The measurement steps of the flexible shaft are the same as above. The length of the flexible shaft is detected according to the position of the pusher block 304 when it stops moving. The distance between the pusher block 304 and the initial position is the tolerance between the flexible shaft and the reference axis. Based on the above tolerance, it is determined whether the length of the flexible shaft is within the set tolerance range, so as to achieve accurate measurement of the length of the flexible shaft and effectively improve detection efficiency and detection accuracy.

[0022] The two ends of the measuring pin 601 extend to the outer sides of the first linear bearing 602 and the second linear bearing 603, respectively. A spring 604 is sleeved on the outer side of the portion of the measuring pin 601 located between the first linear bearing 602 and the second linear bearing 603. By providing the spring 604, the measuring pin 601 can be automatically reset.

[0023] The first baffle 301 and the second baffle 302 are slidably connected to the guide rail 303, and the axial direction of the opening and closing cylinder 4 is set parallel to the sliding direction of the guide rail 303.

[0024] A downward pressing cylinder 8 is vertically fixed to the top of the frame. The piston rod of the downward pressing cylinder 8 is horizontally fixed to a downward pressing plate 7, which is located directly above the limiting mechanism 3. After the flexible shaft falls into the gap between the first baffle 301 and the second baffle 302, the downward pressing cylinder 8 drives the downward pressing plate 7 to descend and press on the flexible shaft but not to press it tightly. This allows the flexible shaft to maintain its movement, thereby limiting its vertical direction during the detection of the flexible shaft and preventing the flexible shaft from deviating in the vertical direction and affecting the detection results.

[0025] The bottom of the frame is rotatably connected to a material discharge swing chute 9, which is located at the bottom of the material discharge chute. A pair of electric telescopic rods are symmetrically hinged to the two side walls of the material discharge swing chute 9, and the other end of each electric telescopic rod is hinged to the push plate feeder 1. After inspection, based on the inspection results, the bottom of the material discharge swing chute 9 is driven by the electric telescopic rods to swing towards the good product collection chute or the defective product collection chute, thereby achieving automatic sorting and discharge of the flexible shafts and preventing material mixing.

[0026] Working principle: Before testing, the initial position of the linear module 5 is first calibrated using a reference axis of standard length. During calibration, the opening and closing cylinders 4 on both sides drive the first baffle 301 and the second baffle 302 to move towards each other along the guide rail 303 until the first baffle 301 and the second baffle 302 abut. At this time, the reference axis is placed in the gap between the first baffle 301 and the second baffle 302. Then, the linear module 5 drives the push block 304 to move towards the measuring pin 601 until the reference axis... The end of the measuring pin 601 abuts against the measuring pin 601. When the pusher 304 pushes the other end of the measuring pin 601 to the inside of the first slotted photoelectric sensor 605, the first slotted photoelectric sensor 605 transmits a signal to the linear module 5, causing the linear module 5 to drive the pusher 304 to decelerate until the end of the measuring pin 601 just moves to block the second slotted photoelectric sensor 606 and stops. At this time, the position of the pusher 304 is the initial position. During detection, the flexible shaft to be detected is fed by the pusher plate feeder 1. The push plate feeds the flexible shaft, causing it to roll down along the feed guide plate 2 into the gap between the first baffle 301 and the second baffle 302. Then, the pressing cylinder 8 drives the pressing plate 7 to descend and press down on the flexible shaft without pressing it tightly, allowing the flexible shaft to maintain its movement. This limits its vertical movement during flexible shaft testing, preventing the flexible shaft from tilting and affecting the test results. Then, the linear module 5 drives the push block 304 to push the flexible shaft, thereby measuring the flexible shaft. The measurement steps of the flexible shaft are the same as above. The length of the flexible shaft is detected based on the position of the push block 304 when it stops moving. The distance between the push block 304 and the initial position is the tolerance between the flexible shaft and the reference axis. Based on the above tolerance, it is determined whether the length of the flexible shaft is within the set tolerance range, realizing accurate measurement of the flexible shaft length and effectively improving detection efficiency and accuracy. After the detection is completed, based on the detection results, the bottom of the material dropping swing trough 9 is driven by the electric telescopic rod to swing towards the good product collection trough or the defective product collection trough, thereby realizing automatic sorting and unloading of the flexible shaft and avoiding mixing.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the length of a flexible shaft in an automotive electric seat, characterized in that: The device includes a pusher feeder (1), on which a feed guide plate (2) is fixedly connected to the side wall facing the discharge port. A frame is provided on the lower side of the feed guide plate (2), and a limiting mechanism (3) is provided on the top of the frame. The limiting mechanism (3) includes a first baffle (301) and a second baffle (302) symmetrically arranged. A pair of guide rails (303) are symmetrically arranged at both ends of the first baffle (301) and the second baffle (302). A tensioning cylinder (4) is horizontally arranged on the outer side of both the first baffle (301) and the second baffle (302). A discharge chute is provided between the first baffle (301) and the second baffle (302), and the inner side of the discharge chute is slidably connected. A push block (304) is attached. A linear module (5) is horizontally arranged at the bottom of the frame. The moving platform of the linear module (5) is fixedly connected to the push block (304). A length detection mechanism (6) is arranged on the top of the frame away from the limiting mechanism (3). The length detection mechanism (6) includes a first linear bearing (602) and a second linear bearing (603) arranged coaxially. A measuring pin (601) is slidably connected between the first linear bearing (602) and the second linear bearing (603). A first slotted photoelectric sensor (605) and a second slotted photoelectric sensor (606) are arranged sequentially on the side of the second linear bearing (603) away from the first linear bearing (602).

2. The device for detecting the length of a flexible shaft in an automotive electric seat according to claim 1, characterized in that: The two ends of the measuring pin (601) extend to the outside of the first linear bearing (602) and the second linear bearing (603), respectively. A spring (604) is sleeved on the outside of the portion of the measuring pin (601) located between the first linear bearing (602) and the second linear bearing (603).

3. The automotive electric seat flexible shaft length detection device according to claim 1, characterized in that: The first baffle (301) and the second baffle (302) are slidably connected to the guide rail (303), and the axial direction of the opening and closing cylinder (4) is parallel to the sliding direction of the guide rail (303).

4. The device for detecting the length of a flexible shaft in an automotive electric seat according to claim 1, characterized in that: A downward pressure cylinder (8) is vertically fixed to the top of the frame, and a downward pressure plate (7) is fixedly connected to the piston rod of the downward pressure cylinder (8) horizontally. The downward pressure plate (7) is located directly above the limiting mechanism (3).

5. The device for detecting the length of a flexible shaft in an automotive electric seat according to claim 1, characterized in that: The bottom of the frame is rotatably connected to a material dropping swing groove (9), which is located at the bottom of the material dropping groove.

6. The device for detecting the length of a flexible shaft in an electric car seat according to claim 5, characterized in that: The two side walls of the material dropping swing groove (9) are symmetrically hinged with a pair of electric telescopic rods, and the other end of the electric telescopic rods is hinged to the push plate feeder (1).

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