An electric tailgate system counterbalance and detection device

Abstract

This invention relates to the field of balance bar testing technology, and discloses a balance bar and testing device for an electric tailgate system. The device includes: a mounting base; a testing mechanism comprising a pressure sensor with multiple pressure-sensitive units arranged in a ring array at the test end of the pressure sensor; and an isolation mechanism comprising a movable sleeve with a ball socket mounted at one end. An elastic component is disposed inside the movable sleeve, applying elastic force to separate the ball socket from the pressure sensor. The elastic component is rotatably connected to the movable sleeve so that the direction of the elastic force deflects during testing. This invention uses a first spring and a first telescopic rod to apply elastic force to the ball socket, allowing it to separate from the pressure sensor when not under testing. This avoids the static load and impact force borne by the pressure sensor when in contact with other components, and reduces coupling interference from environmental vibrations.

Description

Technical Field

[0001] This invention belongs to the field of balance bar detection technology, specifically, it relates to a balance bar and detection device for an electric tailgate system. Background Technology

[0002] Chinese patent CN210775055U discloses a pressure testing machine. During pressure testing, the test piece is placed at the pressure testing station. The pneumatic cylinder is activated, and the pneumatic piston rod, driven by air pressure, pushes a pressure-applying component to the pressure testing station, providing pressure to the test piece. A pressure sensor detects the pressure value provided by the pressure-applying component. When the pressure value is less than a preset value, the hydraulic piston rod extends and abuts against one end of the pneumatic piston rod, applying a force towards the pressure-applying component. This force, combined with the air pressure difference in the pneumatic cylinder, increases the force on the pneumatic piston rod. Since the pressure-applying component is mounted on the pneumatic piston rod, the pressure provided by the component also increases. When the pressure value exceeds the preset value, the hydraulic piston rod retracts, applying a force away from the pressure-applying component to the pneumatic piston rod. This force cancels out the air pressure difference in the pneumatic cylinder, reducing the force on the pneumatic piston rod. Consequently, the pressure provided by the pressure-applying component decreases, maintaining the pressure value at the preset value. Therefore, the pressure testing machine described above can maintain the pressure value applied to the test piece by the pressure-applying component at a preset value during the pressure test, thus achieving high testing accuracy.

[0003] However, this technical solution still has at least the following drawbacks: when the device is not being tested, the pressure sensor is still in contact with the external structure, which causes the test end of the pressure sensor to bear unnecessary static load. At the same time, mechanical vibration coupling caused by environmental vibration can also occur, leading to damage to the pressure sensor. In view of this, the present invention is proposed. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a balance bar and detection device for an electric tailgate system. By incorporating a first spring and a first telescopic rod to apply elastic force to the ball joint, the ball joint can be separated from the pressure sensor when not under testing. This avoids the static load and impact force borne by the pressure sensor when in contact with other components, and reduces coupling interference from environmental vibrations. During testing, the movement of the movable sleeve allows the first telescopic rod to deflect, preventing the elastic force of the first spring from acting on the mounting base and the ball joint, thus avoiding any influence of the first spring's elastic force on the test results.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] A detection device, comprising,

[0007] Mounting substrate;

[0008] The testing mechanism includes a pressure sensor, wherein the test end of the pressure sensor is provided with multiple pressure-sensitive units arranged in a ring array;

[0009] An isolation mechanism includes a movable sleeve with a ball socket installed at one end. An elastic component is provided inside the movable sleeve. The elastic component applies elastic force to separate the ball socket from the pressure sensor. The elastic component is rotatably connected to the movable sleeve so that the direction of the elastic force of the elastic component deflects during testing.

[0010] In a preferred embodiment of the present invention, the isolation mechanism includes a mounting base, the movable sleeve is movably inserted into the mounting base, a protrusion is fixedly mounted on the mounting base, a first groove is provided at the bottom of the movable sleeve, and the protrusion extends into the interior of the movable sleeve through the first groove. When the elastic component is in a horizontal state, the elastic force is transmitted to the movable sleeve through the abutment action with the protrusion. During testing, the movable sleeve slides on the mounting base and compresses the elastic component.

[0011] In a preferred embodiment of the present invention, the elastic component includes a first telescopic rod, which is rotatably connected to one end of the inner wall of the movable sleeve. A first spring is sleeved on the first telescopic rod, and a roller is installed at one end of the first telescopic rod. A guide groove is provided on one side of the mounting base, and a stop block is fixedly installed on one side of the guide groove. When the first telescopic rod deflects, the roller at the end falls into the stop block along the guide groove, and the first spring is in a relaxed state.

[0012] In a preferred embodiment of the present invention, a second groove is provided on the top of the movable sleeve, and the movable sleeve communicates with the outside through the second groove. The isolation mechanism further includes a snap-fit ​​component, which includes a protrusion and is fixedly connected to the movable sleeve. The protrusion is offset from the mounting base and the protrusion in the moving direction of the movable sleeve. A connecting frame is fixedly installed on the top of the roller. The snap-fit ​​component maintains the first telescopic rod in a horizontal state through the protrusion and the connecting frame, and drives the protrusion to separate from the connecting frame when the movable sleeve moves, so that the first telescopic rod deflects.

[0013] In a preferred embodiment of the present invention, the isolation mechanism further includes an auxiliary deflection assembly, which includes a rotating frame rotatably mounted on the top of the mounting base. A torsion spring is installed between the rotating frame and the mounting base. A stop bar is provided on one side of the rotating frame, and the stop bar is fixedly connected to the mounting base. When the protrusion separates from the connecting frame, the torsion spring drives the rotating frame to rotate, thereby causing the first telescopic rod to deflect.

[0014] In a preferred embodiment of the present invention, the isolation mechanism further includes an assisted reset assembly, which is used to drive the first telescopic rod to reset to a horizontal state. The assisted reset assembly includes a rotating rod rotatably connected to the mounting base. An electric cylinder is rotatably mounted at one end of the rotating rod, and one end of the electric cylinder is rotatably connected to the mounting base. A push rod is fixedly mounted at the other end of the rotating rod. A connecting rod is fixedly mounted at the bottom of the roller. One end of the connecting rod extends to the bottom of the first telescopic rod. When the rotating rod rotates, the push rod abuts against the connecting rod to drive the first telescopic rod to rotate and reset.

[0015] In a preferred embodiment of the present invention, a return mechanism is further included. The return mechanism includes a moving component, which includes a telescopic column fixedly connected to the mounting base. A mounting bracket is fixedly mounted at one end of the telescopic column, and a cam is rotatably mounted on the mounting bracket. The moving component also includes a connecting plate fixedly connected to the movable sleeve. The connecting plate and the cam abut against each other. When the cam rotates, it abuts against the connecting plate to drive the movable sleeve to move.

[0016] In a preferred embodiment of the present invention, the return mechanism further includes a guide assembly, which includes a fixed seat, a fixed plate fixedly mounted on the fixed seat, a guide groove provided on the fixed plate, and a guide post fixedly mounted on the cam. When the cam drives the guide post to move, the guide post moves along the guide groove and deflects, thereby driving the cam to rotate.

[0017] In a preferred embodiment of the present invention, a displacement mechanism is further included. The displacement mechanism includes a sliding frame, which is fixedly mounted on a mounting base. Both the mounting seat and the fixed seat are movably connected to the sliding frame. The displacement mechanism also includes a matching ball screw and a ball nut. The ball screw is rotatably connected to the sliding frame, and the ball nut is fixedly mounted on the bottom of the mounting seat.

[0018] The present invention also discloses a balance bar for an electric tailgate system, which is tested using a detection device. It includes an outer sleeve and an inner sleeve that are inserted into each other. A second telescopic rod is installed inside the outer sleeve and the inner sleeve. A second spring is movably sleeved on the second telescopic rod. Ball heads are installed at the ends of the outer sleeve and the inner sleeve that are far apart from each other.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] The present invention applies elastic force to the ball socket by setting a first spring and a first telescopic rod, so that the ball socket can be separated from the pressure sensor when not being tested, thereby avoiding the static load and impact force borne by the pressure sensor when it comes into contact with other components, and reducing the coupling interference of environmental vibration.

[0021] During testing, the present invention allows the first telescopic rod to deflect by moving the movable sleeve, thereby preventing the spring force of the first spring from acting on the mounting base and the ball socket, thus avoiding the spring force of the first spring from affecting the test results. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a detection device according to the present invention;

[0023] Figure 2 This is a schematic diagram of the structure at the substrate mounting location of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure at the ball socket of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the movable sleeve of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure at the first telescopic rod of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure at the protrusion of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure at the guide groove of the present invention;

[0029] Figure 8 This is a schematic diagram of the cam structure of the present invention;

[0030] Figure 9 This is a schematic diagram of the structure of the guide groove in this invention;

[0031] Figure 10 This is a schematic diagram of the internal structure of the outer sleeve of the present invention;

[0032] Figure 11 This is a schematic diagram of the pressure sensor structure of the present invention.

[0033] Figure label:

[0034] 100. Mounting base plate; 101. Sliding frame; 102. Power source; 103. Ball screw; 104. Ball nut; 105. Mounting base;

[0035] 200. Movable sleeve; 201. Ball socket; 202. First telescopic rod; 203. First spring; 204. Connecting rod; 205. Roller; 206. Connecting frame; 207. Protrusion; 208. Stop bar; 209. Rotating frame; 210. Torsion spring; 211. Guide groove; 212. Stop block; 213. Electric cylinder; 214. Rotating rod; 215. Push rod; 216. Protrusion;

[0036] 300. Connecting plate; 301. Telescopic column; 302. Mounting bracket; 303. Cam; 304. Guide column; 305. Fixing base; 306. Fixing plate; 307. Guide groove;

[0037] 400. Outer sleeve; 401. Inner sleeve; 402. Second telescopic rod; 403. Second spring; 404. Ball head;

[0038] 500, Pressure sensor; 501, Pressure-sensitive unit. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0040] Example 1:

[0041] like Figures 1 to 11 As shown, a detection device includes,

[0042] Mounting substrate 100;

[0043] The testing mechanism includes a pressure sensor 500, and the test end of the pressure sensor 500 is provided with multiple pressure-sensitive units 501 arranged in a ring array.

[0044] The isolation mechanism includes a movable sleeve 200, a ball socket 201 installed at one end of the movable sleeve 200, and an elastic component inside the movable sleeve 200. The elastic component applies elastic force to separate the ball socket 201 from the pressure sensor 500. The elastic component is rotatably connected to the movable sleeve 200 so that the direction of the elastic force of the elastic component is deflected during the test.

[0045] like Figure 2 , Figure 6 As shown, in a specific embodiment, the isolation mechanism includes a mounting base 105, a movable sleeve 200 movably inserted into the mounting base 105, a protrusion 216 fixedly mounted on the mounting base 105, and a first groove formed at the bottom of the movable sleeve 200. The protrusion 216 extends into the interior of the movable sleeve 200 through the first groove. When the elastic component is in a horizontal state, the elastic force is transmitted to the movable sleeve 200 through the abutment action with the protrusion 216. During testing, the movable sleeve 200 slides on the mounting base 105 and compresses the elastic component. In this configuration, the two ends of the protrusion 216 are flush with the two ends of the mounting base 105 to withstand the elastic force from the elastic component.

[0046] like Figure 5 , Figure 7As shown, the elastic component further includes a first telescopic rod 202, which is rotatably connected to one end of the inner wall of the movable sleeve 200. A first spring 203 is sleeved on the first telescopic rod 202, and a roller 205 is installed at one end of the first telescopic rod 202. A guide groove 211 is provided on one side of the mounting base 105, and a stop block 212 is fixedly installed on one side of the guide groove 211. When the first telescopic rod 202 deflects, the roller 205 at the end falls into the stop block 212 along the guide groove 211, and the first spring 203 is in a relaxed state. In this configuration, when the first spring 203 is in a relaxed state, the elastic force of the first spring 203 will not be applied to the mounting base 105 and the ball socket 201, and the elastic force of the first spring 203 will not affect the test results during testing.

[0047] like Figure 4 , Figure 5 , Figure 7 , Figure 8 As shown, the movable sleeve 200 further includes a second groove at its top, through which it communicates with the outside. The isolation mechanism also includes a snap-fit ​​assembly, which includes a protrusion 207 fixedly connected to the movable sleeve 200. The protrusion 207 is offset from the mounting base 105 and the protrusion 216 in the direction of movement of the movable sleeve 200. A connecting frame 206 is fixedly mounted on the top of the roller 205. The snap-fit ​​assembly maintains the first telescopic rod 202 in a horizontal state through the protrusion 207 and the connecting frame 206, and when the movable sleeve 200 moves, it causes the protrusion 207 to separate from the connecting frame 206, thereby causing the first telescopic rod 202 to deflect. In this configuration, the protrusion 207 supports the connecting frame 206, and the top of the protrusion 207 is horizontally positioned so that the first telescopic rod 202 will not deflect when the protrusion 207 moves relative to the connecting frame 206.

[0048] like Figure 5 , Figure 7 , Figure 8 As shown, the isolation mechanism further includes an auxiliary deflection assembly, which includes a rotating frame 209 rotatably mounted on the top of the mounting base 105. A torsion spring 210 is installed between the rotating frame 209 and the mounting base 105. A stop bar 208 is provided on one side of the rotating frame 209, and the stop bar 208 is fixedly connected to the mounting base 105. When the protrusion 207 separates from the connecting frame 206, the torsion spring 210 drives the rotating frame 209 to rotate, thereby causing the first telescopic rod 202 to deflect. In this configuration, the stop bar 208 is used to block the rotating frame 209. When the rotating frame 209 rotates under the action of the torsion spring 210, the stop bar 208 abuts against the rotating frame 209 to prevent it from rotating excessively. The rotating frame 209 is L-shaped.

[0049] like Figure 4 , Figure 5As shown, the isolation mechanism further includes an assisted reset assembly, which drives the first telescopic rod 202 to reset to a horizontal state. The assisted reset assembly includes a rotating rod 214 rotatably connected to the mounting base 105. An electric cylinder 213 is rotatably mounted at one end of the rotating rod 214, and one end of the electric cylinder 213 is rotatably connected to the mounting base 105. A push rod 215 is fixedly mounted at the other end of the rotating rod 214. A connecting rod 204 is fixedly mounted at the bottom of the roller 205, and one end of the connecting rod 204 extends to the bottom of the first telescopic rod 202. When the rotating rod 214 rotates, the push rod 215 abuts against the connecting rod 204 to drive the first telescopic rod 202 to rotate and reset. In this configuration, when the electric cylinder 213 is in the retracted state and the first telescopic rod 202 is in the deflected state, the push rod 215 will not contact the connecting rod 204.

[0050] like Figure 7 , Figure 8 , Figure 9 As shown, further, a return mechanism is also included. The return mechanism includes a moving component, which includes a telescopic column 301 fixedly connected to the mounting base 105. A mounting bracket 302 is fixedly mounted at one end of the telescopic column 301, and a cam 303 is rotatably mounted on the mounting bracket 302. The moving component also includes a connecting plate 300 fixedly connected to the movable sleeve 200. The connecting plate 300 and the cam 303 abut against each other. When the cam 303 rotates, it abuts against the connecting plate 300 to drive the movable sleeve 200 to move. In this configuration, two sets of telescopic columns 301 are provided to prevent the mounting bracket 302 from rotating on the mounting base 105. When the cam 303 rotates, its two ends abut against the connecting plate 300 and the mounting base 105, respectively.

[0051] like Figure 9 As shown, the return mechanism further includes a guide assembly, which includes a fixed base 305, a fixed plate 306 fixedly mounted on the fixed base 305, a guide groove 307 formed on the fixed plate 306, and a guide post 304 fixedly mounted on the cam 303. When the cam 303 drives the guide post 304 to move, the guide post 304 moves along the guide groove 307 and deflects, thereby driving the cam 303 to rotate. In this configuration, the guide groove 307 includes a short vertical section, an inclined section, and a long vertical section. When the guide post 304 moves in the inclined section, it deflects to drive the cam 303 to rotate. When the guide post 304 moves in the long vertical section, the cam 303 does not rotate. The short vertical section is used to disengage the guide post 304 from the guide groove 307.

[0052] like Figure 2 , Figure 3 , Figure 4As shown, the system further includes a displacement mechanism, which comprises a sliding frame 101 fixedly mounted on the mounting base 100. Both the mounting seat 105 and the fixed seat 305 are movably connected to the sliding frame 101. The displacement mechanism also includes a matching ball screw 103 and a ball nut 104. The ball screw 103 is rotatably connected to the sliding frame 101, and the ball nut 104 is fixedly mounted on the bottom of the mounting seat 105. In this configuration, a power source 102 is mounted on the sliding frame 101, wherein the power source 102 is a motor, and the output end of the power source 102 is connected to the ball screw 103.

[0053] like Figure 10 As shown, a balance bar for an electric tailgate system, which is tested using a detection device, includes an outer sleeve 400 and an inner sleeve 401 that are inserted into each other. A second telescopic rod 402 is installed inside the outer sleeve 400 and the inner sleeve 401. A second spring 403 is movably sleeved on the second telescopic rod 402. Ball heads 404 are installed at the ends of the outer sleeve 400 and the inner sleeve 401 that are far apart from each other.

[0054] The implementation principle of the electric tailgate system balance bar and detection device in this embodiment is as follows: During testing, the ball head 404 at the end of the outer sleeve 400 and the inner sleeve 401 is aligned with the ball socket 201. The power source 102 is started, and the power source 102 drives the ball screw 103 to rotate. The ball screw 103 drives the ball nut 104 to move, thereby moving the mounting base 105. While the mounting base 105 is moving, it drives the first telescopic rod 202 and the first spring 203 to abut against the protrusion 216, thereby moving the ball socket 201 to clamp the balance bar.

[0055] When the balance bar is successfully clamped, the ball socket 201 remains stationary under the resistance of the balance bar itself. The mounting base 105 continues to move and compress the first spring 203. At the same time, the mounting base 105 and the movable sleeve 200 slide relative to each other, so that the protrusion 207 and the connecting frame 206 move relative to each other. When the protrusion 207 and the connecting frame 206 are misaligned, the rotating frame 209 presses down on the connecting frame 206 under the torque of the torsion spring 210, so that the first telescopic rod 202 and the first spring 203 rotate downward until the roller 205 at the end of the first telescopic rod 202 falls on the stop block 212. At this time, the first spring 203 is in a relaxed state to prevent the elastic force of the first spring 203 from affecting the measurement results.

[0056] When the protrusion 207 separates from the connecting frame 206, the pressure sensor 500 just comes into contact with the back of the ball socket 201. At this time, the power source 102 continues to output power to make the mounting base 105 continue to move. During the movement, the pressure sensor 500 is driven to squeeze the ball socket 201 and the balance bar to achieve the testing function.

[0057] After the test, the reverse drive ball screw 103 is used to move the mounting base 105 in the reverse direction. During this movement, the cam 303 and guide column 304 move. The guide column 304 deflects along the guide groove 307 on the fixed plate 306 during the movement, and the deflection drives the cam 303 to rotate. The cam 303 drives the movable sleeve 200 to move during the rotation. When the guide column 304 is in the long vertical section of the guide groove 307, the cam 303 rotates ninety degrees. At this time, the movable sleeve 200 moves to its maximum position, and the protrusion 207 also moves accordingly. The electric cylinder 213 is activated, and the electric cylinder 213 extends, driving the rotating rod 214 to rotate. The rotating rod 214 drives the push rod 215 to rise, and by pressing against the connecting rod 204, it drives the first... The first telescopic rod 202 resets, simultaneously aligning the connecting frame 206 with the protrusion 207. The ball screw 103 is reversed again to cause the cam 303 and guide post 304 to move in opposite directions. During the movement, the cam 303 is rotated and reset via the guide groove 307. At this time, the movable sleeve 200 resets under the action of the first spring 203, and the protrusion 207 is inserted into the connecting frame 206, thus limiting the horizontal direction of the first telescopic rod 202. After the limit is reached, the electric cylinder 213 resets. At this time, the output end of the pressure sensor 500 does not contact the back of the ball socket 201, thereby avoiding the static load and impact force borne by the pressure sensor 500 when it is not in contact with other components, and reducing the coupling interference of environmental vibration.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A detection device, characterized in that, The utility model relates to a pressure sensor isolation mechanism, including, Mounting substrate (100); Detection mechanism, it includes pressure sensor (500), the test end of pressure sensor (500) is arranged with a plurality of pressure sensitive unit (501), pressure sensitive unit (501) presents annular array; Isolation mechanism, it includes movable sleeve (200), one end of movable sleeve (200) is installed with ball socket (201), the inside of movable sleeve (200) is provided with elastic component, the elastic component exerts elasticity to make ball socket (201) separate with pressure sensor (500), the elastic component is rotatably connected with movable sleeve (200), to make the deflection of the elasticity direction of elastic component when testing The isolation mechanism includes mounting seat (105), movable sleeve (200) is movably inserted on mounting seat (105), convex block (216) is fixedly installed on mounting seat (105), first recess is formed in the bottom of movable sleeve (200), convex block (216) extends to the inside of movable sleeve (200) through first recess, when the elastic component is in horizontal state, the elastic force is transferred to movable sleeve (200) through the abutment effect with convex block (216), movable sleeve (200) slides on mounting seat (105) and compresses elastic component when testing; The elastic component includes first telescopic rod (202), one end of first telescopic rod (202) is rotatably connected with the inner wall of movable sleeve (200), first spring (203) is sleeved on first telescopic rod (202), roller (205) is installed on one end of first telescopic rod (202), guide slot (211) is formed in one side of mounting seat (105), stop block (212) is fixedly installed on one side of guide slot (211), when first telescopic rod (202) deflection, the roller (205) of end portion falls on stop block (212) along guide slot (211), and first spring (203) is in relaxation state; Second recess is formed in the top of movable sleeve (200), movable sleeve (200) is communicated with the outside through second recess, the isolation mechanism further includes clamping assembly, the clamping assembly includes protrusion (207), and protrusion (207) is fixedly connected with movable sleeve (200), protrusion (207) is staggered with mounting seat (105) and convex block (216) in the moving direction of movable sleeve (200), the top of roller (205) is fixedly installed with connecting frame (206), the clamping assembly keeps the horizontal state of first telescopic rod (202) through protrusion (207) and connecting frame (206), and when movable sleeve (200) moves, drives protrusion (207) and connecting frame (206) to separate to make first telescopic rod (202) deflection. The isolation mechanism further comprises an auxiliary deflection assembly, the auxiliary deflection assembly comprises a rotating frame (209) rotatably mounted on the top of the mounting seat (105), a torsional spring (210) is mounted between the rotating frame (209) and the mounting seat (105), one side of the rotating frame (209) is provided with a stop rod (208) fixedly connected with the mounting seat (105), when the protrusion (207) is separated from the connecting frame (206), the rotating frame (209) is driven to rotate by the torsional spring (210) to drive the first telescopic rod (202) to deflect; The isolation mechanism further comprises a power-assisted reset assembly, the power-assisted reset assembly is used for driving the first telescopic rod (202) to reset to a horizontal state, the power-assisted reset assembly comprises a rotating rod (214) rotatably connected with the mounting seat (105), one end of the rotating rod (214) is rotatably provided with an electric cylinder (213), one end of the electric cylinder (213) is rotatably connected with the mounting seat (105), the other end of the rotating rod (214) is fixedly provided with a push rod (215), the bottom of the roller (205) is fixedly provided with a connecting rod (204), one end of the connecting rod (204) extends to the bottom of the first telescopic rod (202), when the rotating rod (214) rotates, the connecting rod (204) is abutted by the push rod (215) to drive the first telescopic rod (202) to rotate and reset.

2. The detection device of claim 1, wherein, Further comprising a return mechanism, the return mechanism comprises a moving assembly, the moving assembly comprises a telescopic column (301) fixedly connected with the mounting seat (105), one end of the telescopic column (301) is fixedly provided with a mounting frame (302), the mounting frame (302) is rotatably provided with a cam (303), the moving assembly further comprises a connecting plate (300) fixedly connected with the movable sleeve (200), the connecting plate (300) and the cam (303) abut each other, when the cam (303) rotates, the connecting plate (300) is abutted to drive the movable sleeve (200) to move.

3. A detection device according to claim 2, characterised in that The return mechanism further comprises a guide assembly, the guide assembly comprises a fixed seat (305), the fixed seat (305) is fixedly provided with a fixed plate (306), the fixed plate (306) is provided with a guide groove (307), the cam (303) is fixedly provided with a guide column (304), when the cam (303) drives the guide column (304) to move, the guide column (304) moves along the guide groove (307) and deflects to drive the cam (303) to rotate.

4. The detection device of claim 3, wherein, Further comprising a displacement mechanism, the displacement mechanism comprises a sliding frame (101), the sliding frame (101) is fixedly mounted on the mounting base plate (100), the mounting seat (105) and the fixed seat (305) are movably connected on the sliding frame (101), the displacement mechanism further comprises a ball screw (103) and a ball nut (104) matched with each other, the ball screw (103) is rotatably connected with the sliding frame (101), and the ball nut (104) is fixedly mounted on the bottom of the mounting seat (105).

5. A detection device according to claim 4, characterised in that A balance rod for detecting an electric tail gate system balance rod, the electric tail gate system balance rod comprises an outer sleeve (400) and an inner sleeve (401) which are mutually inserted, a second telescopic rod (402) is internally installed in the outer sleeve (400) and the inner sleeve (401), a second spring (403) is movably sleeved on the second telescopic rod (402), and a ball head (404) is installed at the end, away from each other, of the outer sleeve (400) and the inner sleeve (401).

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