Seat back drop lock detection tooling

Abstract

The application provides a seat back lock falling detection tool, which comprises a base assembly and a detection assembly, the base assembly is provided with a positioning device for positioning with a vehicle body; the detection assembly comprises a movable connecting rod and a detection unit connected with the movable connecting rod, the detection unit is used for simulating a seat lock on a seat back; the movable connecting rod is rotatably connected with the base assembly, the movable connecting rod can rotate relative to the base assembly and drive the detection unit to rotate, so as to simulate a closing track of the seat lock when the seat lock falls, so as to detect whether the installation position of the seat lock catch is qualified. The seat back lock falling detection tool provided by the application can conveniently detect whether the installation position of the seat lock catch is qualified, avoid problems such as lock falling jamming or inability to fall lock between the seat lock and the lock catch in the use process, so as to ensure the stability and safety in use, and improve the service life of the seat lock.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile tooling, in particular to a seat back lock detection tool. BACKGROUND

[0002] With the continuous improvement of people's living standards and the continuous development and perfection of automobile related technology, customers' requirements for the appearance quality and use performance of automobiles are also getting higher and higher, and the seat lock quality will directly affect customers' recognition of the product.

[0003] In the process of automobile production and manufacturing, due to factors such as assembly error and part size tolerance, the problem of seat back lock jamming or even unable to lock (i.e. the seat lock on the backrest and the lock catch on the vehicle body do not correspond, and interference or locking occurs when locking) often occurs, and the vehicle is difficult to repair. When the lock is jammed or unable to lock, the lock catch is generally knocked for repair until the lock is in place and the vehicle is qualified for delivery. In fact, during long-term use by customers, the repaired lock catch may rebound, and the problem of rear seat lock jamming or inability to lock may recur, thereby seriously affecting the use and driving safety of customers. At the same time, since the seat lock is opened and closed continuously during use, if the lock jamming problem occurs, the seat lock and the lock catch will collide and interfere with each other for a long time, which will reduce the service life of the seat lock. SUMMARY

[0004] The purpose of the present application is to provide a seat back lock detection tool which can conveniently detect whether the installation position of the seat lock catch is qualified, avoid the problems of lock jamming or inability to lock between the seat lock and the lock catch during use, thereby ensuring the stability and safety of use, and improving the service life of the seat lock.

[0005] The present application provides a seat back lock detection tool, comprising a base assembly and a detection assembly, the base assembly is provided with a positioning device for positioning with the vehicle body; the detection assembly comprises a movable connecting rod and a detection unit connected with the movable connecting rod, the detection unit is used for simulating the seat lock on the seat backrest; the movable connecting rod is rotatably connected with the base assembly, and the movable connecting rod can rotate relative to the base assembly and drive the detection unit to rotate, thereby simulating the closing trajectory of the seat lock when the lock is locked, to detect whether the installation position of the seat lock catch is qualified.

[0006] In an implementable manner, the base assembly comprises a reference plate and a cross connecting rod, one end of the cross connecting rod is connected with the reference plate, and the other end of the cross connecting rod extends away from the reference plate along the horizontal direction; the movable connecting rod is rotatably connected with the cross connecting rod, and the movable connecting rod can rotate relative to the cross connecting rod about the axis of the cross connecting rod.

[0007] In an implementable mode, the positioning device comprises a first positioning pin and a second positioning pin, the first positioning pin is connected with the reference plate; the second positioning pin is arranged at one end of the transverse connecting rod away from the reference plate, the second positioning pin is connected with the transverse connecting rod, and the second positioning pin is a telescopic positioning pin.

[0008] In an implementable mode, the base assembly further comprises a connecting block, the connecting block is connected with the transverse connecting rod, and the movable connecting rod is rotatably connected with the connecting block; the movable connecting rod and / or the connecting block is provided with a first fixing device, the first fixing device is used to fix the movable connecting rod and the connecting block together when the movable connecting rod is rotated to a position corresponding to the detection unit and the seat lock catch.

[0009] In an implementable mode, the seat backrest falling lock detection tool has a left-right direction, and the transverse connecting rod is arranged to extend along the left-right direction; the connecting block is slidably connected with the transverse connecting rod, and the connecting block can move relative to the transverse connecting rod along an axial direction of the transverse connecting rod to adjust a position of the detection unit in the left-right direction.

[0010] In an implementable mode, the movable connecting rod comprises a first connecting part and a second connecting part, the first connecting part is connected with the detection unit, and the second connecting part is rotatably connected with the connecting block; the seat backrest falling lock detection tool has a height direction, the first connecting part and the second connecting part are slidably connected, and the first connecting part can move up and down relative to the second connecting part to adjust a position of the detection unit in the height direction; or the first connecting part and the second connecting part are detachably connected.

[0011] In an implementable mode, the reference plate is provided with a second fixing device, and the second fixing device is used to fix the reference plate to a vehicle body.

[0012] In an implementable mode, the seat backrest falling lock detection tool has a left-right direction and a height direction, and a position of the detection unit in the left-right direction and / or the height direction is adjustable.

[0013] In an implementable mode, the detection unit comprises an upper transverse rod, a lower transverse rod and a side longitudinal rod, the upper transverse rod and the lower transverse rod are arranged opposite to each other in the up-down direction, and the side longitudinal rod is connected between the upper transverse rod and the lower transverse rod; the upper transverse rod, the lower transverse rod and the side longitudinal rod surround to form a plug-in hole used for plug-in cooperation with the seat lock catch.

[0014] In an implementable mode, the reference plate is provided with a handle for taking the seat back drop lock detection tool.

[0015] The seat back drop lock detection tool provided by the application has the advantages that: the base assembly and the detection assembly are arranged, the detection assembly comprises a movable connecting rod and a detection unit, the movable connecting rod can drive the detection unit to rotate relative to the base assembly, so that the closing track of the seat lock when the seat lock is dropped is simulated, whether the installation position of the seat lock catch is qualified is determined by determining whether the detection unit can interfere with the seat lock catch; meanwhile, when the installation position of the seat lock catch is determined to be unqualified, the deviation distance between the detection unit and the seat lock catch can be measured, so that data basis is provided for the repair of the seat lock catch and the adjustment of the installation position of the subsequent seat lock catch. The seat back drop lock detection tool can conveniently determine whether the installation position of the seat lock catch is qualified, avoids the problems that the seat lock and the lock catch are stuck or cannot be dropped during use, so that the stability and safety during use are ensured, and the service life of the seat lock is prolonged; meanwhile, the seat back drop lock detection tool has the advantages of simple structure, low cost and convenient operation, and can be operated by one person. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a perspective view of a seat back drop lock detection tool according to an embodiment of the application.

[0017] Figure 2 FIG. 2 is a perspective view of the seat back drop lock detection tool according to the embodiment of the application from another angle.

[0018] Figure 3 FIG. 3 is a structural view of the seat back drop lock detection tool according to the embodiment of the application when the detection assembly rotates.

[0019] Figure 4 FIG. 4 is a partial structural view of an automobile body according to the embodiment of the application.

[0020] Figure 5 FIG. 5 is a structural view of the seat back drop lock detection tool according to the embodiment of the application after being installed on the automobile body.

[0021] Figure 6 FIG. 6 is a perspective view of a seat back drop lock detection tool according to another embodiment of the application. DETAILED DESCRIPTION

[0022] The specific embodiments of the application are described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are used to illustrate the application, but are not used to limit the scope of the application.

[0023] The terms "first", "second", "third", "fourth" and the like in the description and claims of the present application, if any, are used for distinguishing between similar objects talking about the technical scheme and should not be necessarily construed as a specific order or sequence among the technical scheme.

[0024] The orientation terms such as upper, lower, left, right, front, back, top, bottom and the like in the description and claims of the present application, if any, are defined by the position of the structure in the drawing and the position of the structure relative to each other, just for the purpose of expressing the technical scheme clearly and conveniently. It should be understood that the use of orientation terms should not limit the scope of the technical scheme claimed by the present application.

[0025] As shown in Figure 4 , the existing automobile body 7 is generally provided with a seat lock catch 71, and a seat is installed in the automobile, and a seat lock (not shown in the figure) is installed on the seat back of the seat (mainly the rear seat), and the seat lock is locked with the seat lock catch 71, so as to lock the seat back on the automobile body 7. The automobile body 7 is also provided with a first installation reference hole 72, a second installation reference hole 73 and an installation bracket 74, the first installation reference hole 72 and the second installation reference hole 73 are used for positioning of a seat installation tool (not shown in the figure, the seat installation tool is a tool used for installing the seat), and the installation bracket 74 is used for fixing the seat installation tool (that is, when installing the seat, the seat installation tool is positioned with the first installation reference hole 72 and the second installation reference hole 73, and the seat installation tool is fixed on the installation bracket 74, and then the seat is installed on the automobile body 7 by using the seat installation tool). If the installation position of the seat lock catch 71 is accurate and qualified, when the seat back is rotated backward (that is, the seat back is rotated backward relative to the seat cushion), the seat lock on the seat back can be smoothly locked with the seat lock catch 71; if the installation position of the seat lock catch 71 is unqualified, when the seat back is rotated backward, the seat lock on the seat back will interfere with and collide with the seat lock catch 71, resulting in locking failure and even unable to lock.

[0026] As shown in Figure 1 , Figure 2 and Figure 5 , the seat back locking detection tool provided by the embodiment of the present application comprises a base assembly 1 and a detection assembly 2, the base assembly 1 is used for being connected with the automobile body 7, and the base assembly 1 is provided with a positioning device 3 used for positioning with the automobile body 7. The detection assembly 2 comprises a movable connecting rod 21 and a detection unit 22 connected with the movable connecting rod 21, and the detection unit 22 is used for simulating the seat lock on the seat back; the movable connecting rod 21 is rotatably connected with the base assembly 1, and the movable connecting rod 21 can rotate relative to the base assembly 1 and drive the detection unit 22 to rotate, so as to simulate the closing track of the seat lock when the seat lock is locked (that is, the rotating track of the seat lock when the seat back is rotated backward in the automobile), so as to detect whether the installation position of the seat lock catch 71 is qualified.

[0027] Specifically, the seat back lock-down detection tool provided by the embodiment can conveniently detect whether the installation position of the seat lock catch 71 is qualified, avoid lock-down jamming or failure of lock-down between the seat lock and the seat lock catch 71 in the use process, thereby ensuring the stability and safety in use and improving the service life of the seat lock. Meanwhile, the seat back lock-down detection tool has simple structure, low cost, and convenient operation, and can be operated by one person. The seat back lock-down detection tool can be used for position monitoring of the seat lock catch 71 in the automobile production process, guiding repair of the seat lock catch 71, and assisting in confirming whether the size of the seat is qualified.

[0028] As shown in Figure 1 and Figure 5 , as an implementation form, the seat back lock-down detection tool has a left-right direction Y and a height direction Z (the left-right direction Y and the height direction Z of the seat back lock-down detection tool are the left-right direction and the height direction of the automobile body 7), and the position of the detection unit 22 in the left-right direction Y and / or the height direction Z is adjustable (i.e., the position of the detection unit 22 in the left-right direction Y and / or the height direction Z can be adjusted), so that the seat back lock-down detection tool can be suitable for different automobile models, improve the universality of the seat back lock-down detection tool, and save tooling cost.

[0029] As shown in Figure 1 and Figure 3 , as an implementation form, the detection unit 22 includes an upper cross bar 221, a lower cross bar 222, and a side vertical bar 223. The upper cross bar 221 and the lower cross bar 222 are arranged in horizontal extension, and the side vertical bar 223 is arranged in vertical extension. The upper cross bar 221 is located above the lower cross bar 222, and the upper cross bar 221 and the lower cross bar 222 are arranged opposite to each other in up-down direction. The side vertical bar 223 is connected between the upper cross bar 221 and the lower cross bar 222. The upper cross bar 221, the lower cross bar 222, and the side vertical bar 223 enclose a plug-in hole 220 for plug-in cooperation with the seat lock catch 71.

[0030] Specifically, as shown inFigure 1 and Figure 3 As shown, during use, the movable connecting rod 21 is rotated until the position of the detection unit 22 corresponds to that of the seat latch 71. If the installation position of the seat latch 71 is accurate and qualified, the seat latch 71 can smoothly engage with the insertion hole 220 (i.e., the seat latch 71 falls into the insertion hole 220) without interfering with the detection unit 22 (i.e., the seat latch 71 will not interfere with the upper crossbar 221, the lower crossbar 222, and the side longitudinal bar 223). At this time, it can be determined that the installation position of the seat latch 71 is qualified. If the installation position of the seat latch 71 is not qualified, the seat latch 71 will interfere with the detection unit 22. At this time, it can be determined that the installation position of the seat latch 71 is not qualified. At the same time, by measuring the distance between the seat latch 71 and the upper crossbar 221 or the lower crossbar 222, the deviation distance of the seat latch 71 in the height direction Z can be determined; or by measuring the distance between the seat latch 71 and the side longitudinal bar 223, the deviation distance of the seat latch 71 in the left and right direction Y can be determined.

[0031] like Figure 1 As shown, in one embodiment, the side longitudinal bar 223 is disposed at one end of the upper cross bar 221 along the left-right direction Y, thereby forming a structure in which the detection unit 22 has an opening on one side. Figure 6 As shown, in another embodiment, side longitudinal bars 223 can be provided at both ends of the upper horizontal bar 221 in the left-right direction Y, thereby forming a U-shaped structure for the detection unit 22. Of course, in other embodiments, the detection unit 22 can also have other structural forms.

[0032] like Figure 1 and Figure 2 As shown, in one embodiment, the base assembly 1 includes a reference plate 11 and a cross link 12. The reference plate 11 is used to connect to the vehicle body 7. One end of the cross link 12 is connected to the reference plate 11, and the other end of the cross link 12 extends horizontally toward a side away from the reference plate 11. The cross link 12 extends in the left-right direction Y. A movable link 21 is rotatably connected to the cross link 12, and the movable link 21 can rotate relative to the cross link 12 about the axis of the cross link 12 (i.e., Figure 3 In the middle, the movable link 21 can rotate in the direction indicated by arrow S.

[0033] like Figure 1 and Figure 2As shown, as an embodiment, the positioning device 3 comprises a first positioning pin 31 and a second positioning pin 32, the first positioning pin 31 is connected with the reference plate 11. The second positioning pin 32 is arranged at the end of the cross connecting rod 12 away from the reference plate 11, the second positioning pin 32 is connected with the cross connecting rod 12, and the second positioning pin 32 is a telescopic positioning pin (i.e. the second positioning pin 32 comprises a base and a pin shaft (not numbered in the figure), the base is arranged on the cross connecting rod 12, and the pin shaft is telescopically connected with the base).

[0034] Specifically, in the present embodiment, the first positioning pin 31 is used for plug-in positioning with the first installation reference hole 72, and the second positioning pin 32 is used for plug-in positioning with the second installation reference hole 73, so as to position the seat back drop lock detection tool with the automobile body 7; since the first installation reference hole 72 and the second installation reference hole 73 are installation positioning holes of the seat installation tool, additional positioning holes are not required, and the positioning accuracy is very high. At the same time, by arranging the second positioning pin 32 as a telescopic positioning pin, plug-in of the second positioning pin 32 with the second installation reference hole 73 is facilitated.

[0035] As shown in Figure 1 and Figure 2 As an embodiment, the cross connecting rod 12 is located above the reference plate 11, and the base assembly 1 further comprises a longitudinal connecting rod 14, the longitudinal connecting rod 14 is arranged in a vertical direction, and the cross connecting rod 12 is fixedly connected with the reference plate 11 through the longitudinal connecting rod 14.

[0036] As shown in Figure 1 and Figure 2 As an embodiment, the base assembly 1 further comprises a fixing block 15, the cross connecting rod 12 and the longitudinal connecting rod 14 are fixedly connected through the fixing block 15, and the reference plate 11 and the longitudinal connecting rod 14 are fixedly connected through the fixing block 15.

[0037] As shown in Figure 1 and Figure 2 As an embodiment, the base assembly 1 further comprises a connecting block 13, the connecting block 13 is connected with the cross connecting rod 12 and located at the end of the cross connecting rod 12 away from the reference plate 11, and the movable connecting rod 21 is rotatably connected with the connecting block 13. The movable connecting rod 21 and / or the connecting block 13 is provided with a first fixing device 4, the first fixing device 4 is used for fixing the movable connecting rod 21 and the connecting block 13 together when the movable connecting rod 21 is rotated to a position corresponding to the detection unit 22 and the seat lock 71.

[0038] Specifically, in the present embodiment, the first fixing device 4 is a hand screw, and the first fixing device 4 is arranged on the movable connecting rod 21, and the connecting block 13 is provided with a threaded hole (not shown in the figure) for cooperating with the first fixing device 4. In use, after rotating the movable connecting rod 21 to a position corresponding to the position of the seat lock buckle 71, the first fixing device 4 is screwed to make the threaded rod on the first fixing device 4 and the threaded hole on the connecting block 13 connected by threads, so that the movable connecting rod 21 and the connecting block 13 are fixed together, thereby fixing the position of the detection unit 22 (i.e. keeping the detection unit 22 in the latched state), facilitating subsequent measurement work.

[0039] As shown in Figure 1 and Figure 2 , as an embodiment, the movable connecting rod 21 is provided with a rotating pin shaft (not shown in the figure), and the connecting block 13 is provided with a rotating hole (not shown in the figure), and the rotating pin shaft is inserted into the rotating hole, so as to realize the rotating connection between the movable connecting rod 21 and the connecting block 13. At the same time, the connecting block 13 is provided with a groove (not labeled in the figure), and when the movable connecting rod 21 is rotated to a position corresponding to the position of the seat lock buckle 71, the lower end of the movable connecting rod 21 is located in the groove, thereby ensuring the connection stability between the movable connecting rod 21 and the connecting block 13.

[0040] As shown in Figure 1 and Figure 2 , as an embodiment, the connecting block 13 and the cross connecting rod 12 are fixedly connected.

[0041] As another embodiment, the connecting block 13 and the cross connecting rod 12 are slidably connected, and the connecting block 13 can move relative to the cross connecting rod 12 along the axial direction of the cross connecting rod 12 (i.e. move along the left-right direction Y) to adjust the position of the movable connecting rod 21 and the detection unit 22 in the left-right direction Y. Of course, in other embodiments, the position adjustment of the detection unit 22 in the left-right direction Y can also be realized by other ways; for example, the cross connecting rod 12 and the reference plate 11 are arranged in left-right sliding connection.

[0042] As shown in Figure 1 and Figure 2 , as an embodiment, the movable connecting rod 21 includes a first connecting part 211 and a second connecting part 212, the first connecting part 211 is connected with the detection unit 22, and the second connecting part 212 is rotatably connected with the connecting block 13. The first connecting part 211 and the second connecting part 212 are detachably connected, so that different detection units 22 can be replaced to be suitable for different automobile models.

[0043] As another implementation, the first connecting part 211 is slidably connected with the second connecting part 212, and the first connecting part 211 is capable of extending and retracting up and down relative to the second connecting part 212 to adjust the position of the detection unit 22 in the height direction Z. Of course, in other embodiments, the position adjustment of the detection unit 22 in the height direction Z can also be achieved by other ways; for example, the horizontal connecting rod 12 and the reference plate 11 are arranged in sliding connection up and down, etc.

[0044] As shown in Figure 1 and Figure 2 , as an implementation, the reference plate 11 is provided with a second fixing device 5 for fixing the reference plate 11 to the automobile body 7.

[0045] Specifically, in the present embodiment, the second fixing device 5 is a hand screw, and the second fixing device 5 is used to fix the reference plate 11 to the mounting bracket 74 on the automobile body 7 (of course, in other embodiments, the reference plate 11 can also be fixed to other positions of the automobile body 7). During installation, first place the reference plate 11 on the mounting bracket 74, and then screw the second fixing device 5, so that the screw rod on the second fixing device 5 is threadedly connected with the threaded hole (not numbered in the figure) on the mounting bracket 74, thereby fixing the reference plate 11 and the mounting bracket 74 together.

[0046] As shown in Figure 1 and Figure 2 , as an implementation, the reference plate 11 is provided with two second fixing devices 5, which are arranged at intervals on the reference plate 11.

[0047] As shown in Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure , as an implementation, the reference plate 11 is provided with a handle 6 for taking the seat back drop lock detection tool, thereby facilitating installation and use.

[0048] As an implementation, the working steps of the seat back drop lock detection tool can be:

[0049] 1. Place the reference plate 11 on the mounting bracket 74 on the automobile body 7, insert the first positioning pin 31 and the second positioning pin 32 into the first mounting reference hole 72 and the second mounting reference hole 73 respectively, and fix the reference plate 11 and the mounting bracket 74 together by using the second fixing device 5, thereby installing the seat back drop lock detection tool to the automobile body 7;

[0050] 2, rotate the movable connecting rod 21 to the position corresponding to the detection unit 22 and the seat lock 71, if the detection unit 22 and the seat lock 71 do not interfere with each other, it is judged that the installation position of the seat lock 71 is qualified; if the detection unit 22 and the seat lock 71 interfere with each other, it is judged that the installation position of the seat lock 71 is unqualified, and the deviation distance between the detection unit 22 and the seat lock 71 is measured (for example, by measuring with a vernier caliper), thereby providing data basis for the repair of the seat lock 71 and the adjustment of the installation position of the subsequent seat lock 71 (according to the deviation distance data, the installation position of the seat lock 71 can be corrected by optimizing the body fixture; for the problem of unstable installation position of the seat lock 71, the body welding stability can be improved to solve the problem).

[0051] The seat back lock detection tool can be used for quality monitoring in the automobile production process, and can also be used for repair of the rear seat lock not in place vehicle.

[0052] When the seat back lock detection tool is used for repair of the rear seat lock not in place vehicle, the working steps can be:

[0053] 1, remove the seat, place the seat back lock detection tool in the body, and fix the body reference position;

[0054] 2, swing the movable connecting rod 21 and the detection unit 22 to the lock state, confirm whether the movement track interferes with the seat lock 71; if interference occurs, measure the deviation distance of the seat lock 71 in Z direction and Y direction with a vernier caliper, and then repair the seat lock 71;

[0055] 3, after repairing the position of the seat lock 71, measure and confirm with the seat back lock detection tool, and if the measurement is qualified, install the seat for verification, and if there is no problem, proceed to the next cycle; if there is a problem, confirm the size of the seat and rectify;

[0056] 4, after rectification, proceed to the next working cycle without problem.

[0057] When the seat back lock detection tool is used for quality monitoring in the automobile production process, the working steps can be:

[0058] 1, place the seat back lock detection tool in the body on the welding body-in-white assembly, and fix the body reference position;

[0059] 2, swing the movable connecting rod 21 and the detection unit 22 to the lock state, measure the position data of the seat lock 71 in Z direction and Y direction with a vernier caliper, record and analyze the measurement data; if the measurement data is outside the standard data tolerance range, rectify the related tooling and repair the seat lock 71;

[0060] 3, the position of the seat lock buckle 71 is re-confirmed, and the next work cycle is carried out after the confirmation is qualified.

[0061] The seat back lock detection tool provided by the embodiment has the following advantages:

[0062] 1, the seat back lock detection tool can conveniently detect whether the installation position of the seat lock buckle 71 is qualified, avoid the problems of lock jam or unable to fall lock between the seat lock and the seat lock buckle 71 in the use process, thereby ensuring the stability and safety of use, and improving the service life of the seat lock.

[0063] 2, the seat back lock detection tool has simple structure, low cost, and convenient operation, and can be operated by one person.

[0064] 3, the seat back lock detection tool uses the first positioning pin 31 and the second positioning pin 32 for positioning, uses the same positioning reference as the seat installation, reduces the data error caused by the conversion of the positioning reference, and improves the positioning accuracy.

[0065] 4, the seat back lock detection tool can be used for position monitoring of the seat lock buckle 71 in the automobile production process, can be used for guiding the repair of the seat lock buckle 71, and can also be used for assisting to confirm whether the size of the seat is qualified.

[0066] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A seat back latch drop detection tool, characterized by, The seat back locking detection tool comprises a base assembly (1) and a detection assembly (2), the base assembly (1) is provided with a positioning device (3) for positioning with a vehicle body (7); the detection assembly (2) comprises a movable connecting rod (21) and a detection unit (22) connected with the movable connecting rod (21), the detection unit (22) is used for simulating a seat lock on a seat back; The movable connecting rod (21) is rotatably connected with the base assembly (1), the movable connecting rod (21) can rotate relative to the base assembly (1) and drive the detection unit (22) to rotate, so as to simulate a closing track of the seat lock when the seat lock is locked, and whether the installation position of the seat lock buckle (71) is qualified is detected.

2. The seat back latch drop detection fixture of claim 1, wherein, The base assembly (1) comprises a reference plate (11) and a cross connecting rod (12), one end of the cross connecting rod (12) is connected with the reference plate (11), the other end of the cross connecting rod (12) extends away from the reference plate (11) along a horizontal direction; the movable connecting rod (21) is rotatably connected with the cross connecting rod (12), the movable connecting rod (21) can rotate relative to the cross connecting rod (12) around an axis of the cross connecting rod (12).

3. The seat back latch drop detection fixture of claim 2, wherein, The positioning device (3) comprises a first positioning pin (31) and a second positioning pin (32), the first positioning pin (31) is connected with the reference plate (11); the second positioning pin (32) is arranged at one end of the cross connecting rod (12) away from the reference plate (11), the second positioning pin (32) is connected with the cross connecting rod (12), and the second positioning pin (32) is a telescopic positioning pin.

4. The seat back latch drop detection fixture of claim 2, wherein, The base assembly (1) further comprises a connecting block (13), the connecting block (13) is connected with the cross connecting rod (12), and the movable connecting rod (21) is rotatably connected with the connecting block (13); a first fixing device (4) is arranged on the movable connecting rod (21) and / or the connecting block (13), the first fixing device (4) is used for fixing the movable connecting rod (21) and the connecting block (13) together when the movable connecting rod (21) is rotated to a position corresponding to the detection unit (22) and the seat lock buckle (71).

5. The seat back latch drop detection fixture of claim 4, wherein, The seat back locking detection tool has a left-right direction (Y), the cross connecting rod (12) extends along the left-right direction (Y); the connecting block (13) is slidably connected with the cross connecting rod (12), the connecting block (13) can move relative to the cross connecting rod (12) along an axial direction of the cross connecting rod (12), so as to adjust a position of the detection unit (22) in the left-right direction (Y).

6. The seat back latch drop detection fixture of claim 4, wherein, The movable connecting rod (21) comprises a first connecting part (211) connected with the detection unit (22) and a second connecting part (212) rotatably connected with the connecting block (13); the seat backrest falling lock detection tool has a height direction (Z), the first connecting part (211) is slidably connected with the second connecting part (212), the first connecting part (211) can be moved up and down relative to the second connecting part (212) to adjust the position of the detection unit (22) in the height direction (Z); or the first connecting part (211) is detachably connected with the second connecting part (212).

7. The seat back latch drop detection fixture of claim 2, wherein, The reference plate (11) is provided with a second fixing device (5) for fixing the reference plate (11) to the automobile body (7).

8. The seat back latch drop detection fixture of claim 2, wherein, The reference plate (11) is provided with a handle (6) for taking the seat backrest falling lock detection tool.

9. The seat back latch drop detection fixture of claim 1, wherein, The seat backrest falling lock detection tool has a left-right direction (Y) and a height direction (Z), and the position of the detection unit (22) in the left-right direction (Y) and / or the height direction (Z) is adjustable.

10. The seat back latch drop detection tool of any of claims 1-9, wherein, The detection unit (22) comprises an upper cross rod (221), a lower cross rod (222) and a side vertical rod (223), the upper cross rod (221) and the lower cross rod (222) are arranged opposite to each other in the up-down direction, and the side vertical rod (223) is connected between the upper cross rod (221) and the lower cross rod (222); the upper cross rod (221), the lower cross rod (222) and the side vertical rod (223) form an insertion hole (220) for insertion cooperation with the seat lock buckle (71) in the surrounding.

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