Assembly tool for automobile seat backrest framework

Abstract

The utility model discloses an assembly tool for an automobile seat backrest framework. The assembly tool comprises a base; the backrest fixing unit is arranged on the base; the two sliding positioning units are arranged on the two sides of the backrest fixing unit respectively; the two shaft rod inserting units are respectively arranged on the two sliding positioning units; the shaft rod insertion unit moves along with the sliding end of the sliding positioning unit to directly face the insertion shaft hole of the backrest, and the auxiliary shaft rod is inserted into the insertion shaft hole of the backrest; the two end face locking units are respectively arranged on the two sliding positioning units; the shaft rod penetrating unit moves along with the sliding end of the sliding positioning unit to directly face the shaft inserting hole of the backrest, and the two ends of the installed shaft rod are locked; and the detection reset unit is arranged on the backrest fixing unit and is used for limiting the detected inclination angle of the backrest. The seat backrest, the adjusting motor and the shaft rod can be quickly assembled, the requirement for workers is lowered, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile parts assembly, and specifically relates to an automobile seat backrest framework assembly tool. BACKGROUND

[0002] The backrest and seat frame of an automobile seat generally adopt a rotatable structure form, such as a front-row seat of an automobile. The backrest of a current electric seat can be electrically adjusted in inclination angle. Therefore, on the basis of a conventional manual backrest angle adjusting structure, the electric seat is additionally provided with a motor for adjusting the backrest angle and a shaft rod for driving the two sides of the seat backrest to synchronously rotate and bear force.

[0003] The positioning and installation of the motor and the shaft rod of the current electric seat are completed manually. The shaft rod needs to be completely matched with the rotating mechanism of the seat backrest and the rotating shaft of the motor due to the spline groove on the surface of the shaft rod. Therefore, a large amount of manual work is required to align and install the three components. The entire assembly process is slow, the skill level of the workers is required to be high, and rapid mass production cannot be achieved. UTILITY MODEL CONTENTS

[0004] In view of the above defects of the prior art, the purpose of the utility model is to provide an automobile seat backrest framework assembly tool which can quickly assemble the seat backrest, the adjusting motor and the shaft rod, reduce the requirement for workers and improve production efficiency.

[0005] The purpose of the utility model is achieved through the following technical scheme:

[0006] An automobile seat backrest framework assembly tool comprises:

[0007] a base;

[0008] a backrest fixing unit arranged on the base and used for fixing the fixed end of the backrest to the base;

[0009] two sliding positioning units arranged on the two sides of the backrest fixing unit, wherein the sliding direction of the sliding positioning unit is perpendicular to the back surface of the backrest fixed by the backrest fixing unit;

[0010] two shaft rod penetrating units arranged on the two sliding positioning units, wherein the shaft rod penetrating unit moves opposite to the shaft hole of the backrest along with the sliding end of the sliding positioning unit to assist the shaft rod to penetrate into the shaft hole of the backrest;

[0011] two end face locking units arranged on the two sliding positioning units, wherein the shaft rod penetrating unit moves opposite to the shaft hole of the backrest along with the sliding end of the sliding positioning unit to lock the two ends of the installed shaft rod;

[0012] The detection reset unit is arranged on the backrest fixing unit, located at the rear of the backrest fixing unit, and faces the back of the backrest fixed by the backrest fixing unit. The detection reset unit limits the inclination angle of the backrest after detection.

[0013] Further, the backrest fixing unit comprises:

[0014] The bottom plate is arranged on the base by screws, and the detection reset unit is arranged on the bottom plate.

[0015] The two fixing seats are arranged on the bottom plate in parallel and at intervals, and the fixing seat is provided with a bolt corresponding to the mounting hole on the fixed end of the backrest.

[0016] The limiting telescopic mechanism is arranged on the fixing seat and faces the bolt. The telescopic end of the limiting telescopic mechanism is provided with a sleeve, and the inner diameter of the sleeve matches the outer diameter of the bolt. With the elongation of the limiting telescopic mechanism, the sleeve extrudes and fixes the fixed end of the backrest on the fixing seat.

[0017] Further, the fixing seat comprises:

[0018] The two positioning plates are arranged on the bottom plate in opposite and spaced relationship.

[0019] The at least two bolts are arranged vertically on a certain positioning plate and located between the two positioning plates. The head of the bolt is provided with a reduced diameter platform. The sleeve of the limiting telescopic mechanism passes through the other positioning plate and faces the reduced diameter platform.

[0020] The in-situ detection sensor is arranged on a certain positioning plate and faces the gap between the two positioning plates.

[0021] Further, the sliding positioning unit comprises:

[0022] The slide rail plate is arranged on the base and located at the side of the backrest fixing unit. The slide rail plate is provided with two slide rails arranged at intervals, and the sliding direction is perpendicular to the back surface of the backrest fixed by the backrest fixing unit.

[0023] The slide table is provided with a slider matching the slide rail on the lower surface and arranged on the slide rail plate. The shaft rod penetrating unit and the end face locking unit are arranged on the slide table.

[0024] The first air cylinder is arranged on the slide rail plate, the telescopic end is connected with the slide table, and the slide table is controlled to displace on the slide rail plate.

[0025] The two groups of sliding limiting assemblies are arranged on the base and face the two ends of the sliding direction of the slide table. The sliding position of the slide table is limited, and when the two groups of sliding limiting assemblies limit the two ends of the slide table respectively, the shaft rod penetrating unit and the end face locking unit on the slide table face the shaft hole of the backrest respectively.

[0026] The sliding limiting assembly comprises:

[0027] Two limit members are arranged on the base and face the section of the sliding table;

[0028] A proximity switch is arranged on the limit member and faces the side of the sliding table.

[0029] Further, the shaft rod penetrating unit comprises:

[0030] At least two placing seats are arranged on the sliding table and are provided with arc-shaped grooves at the upper end surfaces, and the axis of the arc-shaped grooves is parallel to the axis of the shaft hole of the backrest;

[0031] A spring pressing mechanism is arranged on the sliding table and the pressing end thereof faces the axis of the arc-shaped groove.

[0032] Further, the end surface locking unit comprises:

[0033] An end surface cylinder is arranged on the sliding table and the axis thereof is parallel to the axis of the shaft hole of the backrest;

[0034] A lock sleeve is arranged on the telescopic end of the end surface cylinder and is provided with a containing groove for containing a lock buckle on the outer surface.

[0035] Further, the detection resetting unit comprises:

[0036] A resetting seat is arranged on the backrest fixing unit and is located at the rear of the backrest fixing unit and faces the back of the backrest fixed by the backrest fixing unit.

[0037] Two ear plates are horizontally arranged on the top end of the resetting seat.

[0038] Two translation cylinders are arranged on the ear plates and the telescopic end of the translation cylinder is provided with a pad; the pad, the ear plate and the resetting seat face the hollow area of the backrest frame when the translation cylinder is contracted; the pad interferes with the rotating path of the backrest frame when the translation cylinder is elongated.

[0039] Due to the adoption of the above technical scheme, the utility model has the following advantages:

[0040] The backrest is fixed by the backrest fixing unit, and after the backrest is limited, it is convenient to assemble the backrest by manual work or other equipment; the sliding positioning unit controls the displacement of the pull rod penetrating unit and the end surface locking unit, so that the pull rod penetrating unit and the end surface locking unit can quickly complete the penetration of the shaft rod and the locking of the end surface of the shaft rod; and the detection resetting unit can detect whether the backrest moves and the motor is installed in place after the motor is installed.

[0041] The other advantages, objects, and features of the present application will be apparent to those skilled in the art in view of the following detailed description and drawings, and will be apparent from the practice of the application. The advantages, objects, and features of the present application will be apparent to those skilled in the art in view of the following detailed description and drawings, and will be apparent from the practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0042] The drawings of the present application are described as follows:

[0043] Figure 1 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment.

[0044] Figure 2 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment. Figure 1 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment.

[0045] Figure 3 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment.

[0046] Figure 4 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment. Figure 3 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment.

[0047] Figure 5 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment.

[0048] Figure 6 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment. Figure 5 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment.

[0049] Figure 7 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment. Figure 5 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment.

[0050] Figure 8 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment. Figure 5 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment.

[0051] Figure 9 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment. Figure 5 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment.

[0052] Figure 10 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment. Figure 5 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment.

[0053] Figure 11 The figure is a schematic diagram of the three-dimensional structure of the automobile seat backrest framework after assembly in the embodiment.

[0054] In the figure: 1. base; 21. bottom plate; 221. positioning plate 221; 222. bolt; 2221. reduced diameter table; 223. in-place detection sensor; 23. limit extension mechanism; 231. sleeve; 31. slide rail plate; 32. slide table; 33. first air cylinder; 341. limiting piece; 342. proximity switch; 41. placing seat; 411. arc-shaped groove; 42. elastic top pressure mechanism; 51. end face air cylinder; 52. lock sleeve; 521. accommodating groove; 61. reset seat; 62. ear plate; 63. translation air cylinder; 64. pad; 71. backrest; 72. fixed end; 721. mounting hole; 73. insertion shaft hole; 74. adjusting motor; 75. shaft rod; 76. lock catch. DETAILED DESCRIPTION

[0055] The utility model will be further explained in connection with the drawings and examples.

[0056] Examples:

[0057] As shown in the figure, the automobile seat backrest framework assembly tool includes: Figures 1 to 10

[0058] Base 1;

[0059] Backrest fixing unit, arranged on the base 1, fixing the fixed end 72 of the backrest 71 on the base 1;

[0060] Two sliding positioning units are arranged on the two sides of the backrest fixing unit respectively, and the sliding direction of the sliding positioning unit is perpendicular to the back of the backrest 71 fixed by the backrest fixing unit;

[0061] Two shaft rod 75 penetrating units are arranged on the two sliding positioning units respectively; the shaft rod 75 penetrating unit moves opposite to the insertion shaft hole 73 of the backrest 71 with the sliding end of the sliding positioning unit, and assists the shaft rod 75 to penetrate into the insertion shaft hole 73 of the backrest 71;

[0062] Two end face locking units are arranged on the two sliding positioning units respectively; the shaft rod 75 penetrating unit moves opposite to the insertion shaft hole 73 of the backrest 71 with the sliding end of the sliding positioning unit, and locks the two ends of the installed shaft rod 75;

[0063] Detection reset unit, arranged on the backrest fixing unit, located at the rear of the backrest fixing unit, opposite to the back of the backrest 71 fixed by the backrest fixing unit, and limiting the inclination angle of the detected backrest 71.

[0064] ​The backrest 71 is fixed by the backrest fixing unit, and after the backrest 71 is limited, manual work and other equipment can be facilitated to assemble the backrest 71; the sliding positioning unit controls the displacement of the pull rod penetrating unit and the end face locking unit, so that the pull rod penetrating unit and the end face locking unit can quickly complete the penetration of the shaft rod 75 and the locking of the end face of the shaft rod 75. The detection reset unit can detect whether the backrest 71 moves and whether the motor is installed in place after the adjustment motor 74 is installed.

[0065] In the embodiment, the backrest fixing unit comprises:

[0066] The bottom plate 21 is arranged on the base 1 by screws, and the detection reset unit is arranged on the bottom plate 21;

[0067] Two fixed seats are arranged in parallel and at intervals on the bottom plate 21, and the fixed seat is provided with a bolt 222 corresponding to the mounting hole 721 on the fixed end 72 of the backrest 71;

[0068] The limiting telescopic mechanism 23 is arranged on the fixed seat and faces the bolt 222; the telescopic end of the limiting telescopic mechanism 23 is provided with a sleeve 231, the inner diameter of the sleeve 231 matches the outer diameter of the bolt 222, and as the limiting telescopic mechanism 23 is elongated, the sleeve 231 extrudes and fixes the fixed end 72 of the backrest 71 on the fixed seat.

[0069] The backrest fixing unit is installed on the base 1 through the bottom plate 21, so that the utility model can be suitable for different backrest 71 products, and different backrest 71 can be assembled, and finally extrusion fixing is performed through the limiting telescopic mechanism 23 (air cylinder) by limiting the backrest 71 through the bolt 222.

[0070] In the embodiment, the fixed seat comprises:

[0071] Two positioning plates 221 are arranged on the bottom plate 21 at intervals;

[0072] At least two bolts 222 are vertically arranged on a certain positioning plate 221 and located between the two positioning plates 221; the head of the bolt 222 is provided with a necking table 2221; the sleeve 231 of the limiting telescopic mechanism 23 penetrates through the other positioning plate 221 and faces the necking table 2221;

[0073] The in-position detection sensor 223 is arranged on a certain positioning plate 221 and faces the gap between the two positioning plates 221.

[0074] The necking table can avoid the mutual extrusion of the shape on the fixed end 72 of the backrest 71 and the plate surface of the positioning plate 221, causing damage to the backrest 71. The in-position detection sensor 223 adopts a metal detection sensor to judge whether the backrest 71 is installed.

[0075] Further, the sliding positioning unit comprises:

[0076] A slide rail plate 31 is arranged on the base 1 and located at the side of the backrest fixing unit. Two slide rails are arranged on the slide rail plate 31 and spaced apart, and the sliding direction is perpendicular to the back surface of the backrest 71 fixed by the backrest fixing unit.

[0077] A slide table 32 is arranged on the slide rail plate 31 and has a lower surface provided with a slide block matched with the slide rail. The shaft rod 75 penetrating unit and the end face locking unit are arranged on the slide table 32.

[0078] A first cylinder 33 is arranged on the slide rail plate 31 and connected with the slide table 32 at the telescopic end, so as to control the displacement of the slide table 32 on the slide rail plate 31.

[0079] Two groups of sliding limiting assemblies are arranged on the base 1 and opposite to the two ends of the slide direction of the slide table 32. The sliding position of the slide table 32 is limited, and when the two ends of the slide table 32 are respectively limited by the sliding limiting assemblies, the shaft rod 75 penetrating unit and the end face locking unit on the slide table 32 are respectively opposite to the shaft hole 73 of the backrest 71.

[0080] The sliding limiting assembly comprises:

[0081] Two limiting members 341 are arranged on the base 1 and opposite to the cross section of the slide table 32 at the side.

[0082] A proximity switch 342 is arranged on the limiting member 341 and opposite to the side of the slide table 32.

[0083] The limiting member 341 is independently installed on the base 1 and can be selected according to different models of the backrest 71. The proximity switch 342 can determine whether the slide table 32 is moved to the position.

[0084] In the embodiment, the shaft rod 75 penetrating unit comprises:

[0085] At least two placing seats 41 are arranged on the slide table 32 and have an upper end face provided with an arc-shaped groove 411. The axis line of the arc-shaped groove 411 is parallel to the axis line of the shaft hole 73 of the backrest 71.

[0086] A spring pressing mechanism 42 is arranged on the slide table 32 and opposite to the axis line of the arc-shaped groove 411 at the pressing end.

[0087] The arc-shaped groove 411 on the placing seat 41 can effectively limit the shaft rod 75, and when the shaft rod 75 is inserted into the corresponding position, the shaft rod 75 can be manually rubbed to rotate in the arc-shaped groove 411, so that the spline groove on the shaft rod 75 can be quickly matched with the spline on the shaft hole 73. The elastic pressing mechanism 42 is a spring-loaded telescopic cylinder, that is, a spring deformation capable pressing head is arranged at the end of the telescopic cylinder to apply a small axial extrusion force to the end of the shaft rod 75. Therefore, when the shaft rod 75 is inserted, the worker only needs to rub the shaft rod 75, and after the shaft rod 75 is matched with the shaft hole 73, the shaft rod 75 is inserted into the shaft hole 73 under the action of the force of the elastic pressing mechanism 42, without the need for the worker to press the tail of the shaft rod 75 against the backrest 71 while rubbing the shaft rod 75, thereby reducing the operation difficulty and improving the insertion efficiency.

[0088] In the embodiment, the end face locking unit comprises:

[0089] The end face cylinder 51 is arranged on the sliding table 32, and the axis thereof is parallel to the axis of the shaft hole 73 of the backrest 71.

[0090] The lock sleeve 52 is arranged on the telescopic end of the end face cylinder 51, and the outer side surface thereof is provided with a containing groove 521 for containing the lock buckle 76.

[0091] The lock sleeve 52 can cover the lock buckle 76 on both ends of the shaft rod 75, so as to prevent the shaft rod 75 from sliding out of the backrest 71.

[0092] In the embodiment, the detection resetting unit comprises:

[0093] The resetting seat 61 is arranged on the backrest fixing unit and located at the rear of the backrest fixing unit, and faces the back of the backrest 71 fixed by the backrest fixing unit.

[0094] The two ear plates 62 are horizontally arranged at the top end of the resetting seat 61.

[0095] The two translation cylinders 63 are arranged on the ear plates 62, and the telescopic end of the translation cylinder 63 is provided with a pad 64; the pad 64, the ear plate 62 and the resetting seat 61 face the hollow area of the frame of the backrest 71 when the translation cylinder 63 is contracted; and the pad 64 interferes with the rotating path of the frame of the backrest 71 when the translation cylinder 63 is elongated.

[0096] After the backrest 71 is assembled, it is necessary to test whether the adjusting motor 74 is installed in place and whether the backrest 71 can normally control the inclination angle. After the adjusting motor 74 is tested, it is necessary to reset the inclination angle of the backrest 71. At this time, the pad 64 (which is made of rubber and has a certain buffering deformation ability) can fix the inclination angle of the backrest 71, so that all the assembled backrests 71 have a unified standard, which is convenient for packaging, transportation and the like.

[0097] The automobile seat backrest framework assembly tool in this embodiment works as follows: as shown in Fig. Figure 11 The two fixed ends 72 of the backrest 71 are placed into the two fixed seats, the mounting holes 721 of the backrest 71 are made to correspond to the latches 222, and then the limiting telescopic mechanism 23 is started to limit and fix the fixed ends 72 and the fixed seats.

[0098] Subsequently, the shaft rod 75 to be installed is placed into the shaft rod 75 insertion unit on one side of the backrest 71, the first cylinder 33 is controlled to move so that the shaft rod 75 is opposite the insertion shaft hole 73 of the backrest 71, the elastic pressing mechanism 42 is started, and the end of the shaft rod 75 presses the insertion shaft hole 73. At this time, the spline on the shaft rod 75 and the spline on the insertion shaft hole 73 are generally not corresponding, the worker slowly rubs the shaft rod 75, so that the shaft rod 75 rotates, until the spline on the shaft rod 75 corresponds to the spline on the insertion shaft hole 73, and then under the pressing of the elastic pressing mechanism 42, the shaft rod 75 is inserted into the insertion shaft hole 73.

[0099] Subsequently, the adjusting motor 74 to be installed is placed into the predetermined position of the backrest 71, the position of the adjusting motor 74 is slightly adjusted, so that the adjusting motor 74 corresponds to the shaft rod 75, the shaft rod 75 is inserted through the adjusting motor 74, and finally the shaft rod 75 is pushed so that the shaft rod 75 passes through the insertion shaft hole 73 on the other side of the backrest 71 (the spline angles of the insertion shaft holes 73 on the left and right sides of the backrest 71 are consistent).

[0100] Then the required lock catch 76 is placed into the two lock sleeves 52, subsequently the first cylinder 33 is controlled to move so that the lock sleeve 52 is opposite the shaft rod 75, and finally the end face cylinder 51 is controlled to extend, so that the lock catch 76 is sleeved on the shaft rod 75.

[0101] Finally, the limiting telescopic mechanism 23 is controlled to release the fixing of the fixed ends 72, and the backrest 71 can be taken out.

[0102] Finally, it is to be explained that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A tooling for assembling a car seat back frame, characterized in that, The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included.

2. The automobile seat back frame assembly tool according to claim 1, wherein The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included.

3. The automobile seat back frame assembly tool according to claim 2, wherein The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included.

4. The automobile seat back frame assembly tool according to claim 1, wherein The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included.

5. The automobile seat back frame assembly tool according to claim 4, wherein The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included.

6. The automobile seat back frame assembly tool according to claim 1, wherein The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included.

7. The automobile seat back frame assembly tool according to claim 1, wherein The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are included. The utility model relates to a backrest fixing unit, two sliding positioning units, two shaft rod penetrating units and two end face locking units, a detection reset unit and a backrest fixing unit are The lock sleeve is arranged on the telescopic end of the end face cylinder, and an accommodation groove for accommodating a lock buckle is arranged on the outer side surface.

8. The automobile seat back frame assembly tool according to claim 1, wherein The detection reset unit comprises: The reset seat is arranged on the backrest fixing unit and located at the rear of the backrest fixing unit and opposite to the back of the backrest fixed by the backrest fixing unit; The two ear plates are horizontally arranged on the top end of the reset seat; The two translation cylinders are arranged on the ear plates, and a pad is arranged on the telescopic end of the translation cylinder; the pad, the ear plate and the reset seat are opposite to the hollow area of the backrest frame when the translation cylinder is retracted; the pad interferes with the rotation path of the backrest frame when the translation cylinder is elongated.

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