A kind of automobile safety belt fixing seat and tensile testing machine thereof

Abstract

The invention relates to the technical field of automobile parts detection, and specifically to an automobile safety belt fixing seat and a tensile testing machine thereof. The safety belt fixing seat of the invention comprises a lock buckle and a lock tongue. The lock buckle consists of a buckle seat and a ring plate fixed at the bottom end of the buckle seat. A T-shaped cylindrical seat is sleeved inside the ring plate. A convex strip is fixedly arranged on the outer side of the T-shaped cylindrical seat. An arc rod is fixedly connected between the two sides of the convex strip. The positions of the outer sides of the arc rod located on both sides of the buckle seat are movably sleeved with arc springs, which not only has high buckling strength but also can be adjusted in angle. The tensile testing machine of the invention comprises a frame, a lock buckle rotary conveying mechanism is installed on the inner side of the frame, and step seats are fixedly arranged on both sides of the lock buckle rotary conveying mechanism on the top of the frame, a side frame is fixedly arranged on the top of one of the step seats, a lock tongue rotary conveying mechanism is installed on the top of the side frame, and a guiding mechanism is arranged between the lock buckle rotary conveying mechanism and the lock tongue rotary conveying mechanism, so as to realize continuous self-feeding test.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts detection, in particular to an automobile safety belt fixing seat and a tensile testing machine thereof. Background Art

[0002] The purpose of a car seat belt is to restrain the occupants in a collision, to avoid a secondary collision between the occupants and the steering wheel and dashboard, or to avoid the occupants being thrown out of the car and causing death or injury. After the seat belt is fastened, the tensile strength that the seat belt holder can withstand determines the life safety of the driver or passengers in a traffic accident. Therefore, the tensile strength of the seat belt holder needs to be tested before it is put into use.

[0003] The prior art discloses a Chinese patent with a publication number of CN 212567894 U: a vehicle seat belt buckle detection device, and discloses a fixing component and a disassembly component. Through the mutual cooperation of the fixing components, the seat belt buckle can be limited and the fixing effect can be improved. At the same time, through the mutual cooperation of the disassembly components, the seat belt lock tongue can be quickly disassembled and assembled.

[0004] However, the above-mentioned prior art still has certain defects, that is, during use, after each test, the staff needs to manually disassemble and assemble the test piece, which cannot achieve continuous automatic detection, thereby reducing the test efficiency. Summary of the invention

[0005] The object of the present invention is to provide a vehicle safety belt fixing seat and a tensile testing machine thereof to solve the problems raised in the above background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A car seat belt fixing seat, comprising a lock buckle and a lock tongue, the lock buckle consists of a buckle seat and a ring plate fixed at the bottom end of the buckle seat, a T-shaped cylindrical seat is movably sleeved inside the ring plate, a ring groove is opened on the inner side of the ring plate, a ring block matching the ring groove is fixedly sleeved on the outer side of the T-shaped cylindrical seat, a convex strip is fixedly provided at the outer edge position of the T-shaped cylindrical seat, an arc rod is fixedly connected between the two sides of the convex strip, the buckle seat is movably sleeved on the outer side of the arc rod, and arc springs are movably sleeved at the positions on the outer side of the arc rod located on both sides of the buckle seat, and a locking component for fastening and fixing the lock tongue is provided at the top of the buckle seat.

[0008] The present invention also provides a tensile testing machine for testing the tensile performance of the buckle and tongue connection strength of the above-mentioned automobile safety belt fixing seat, the tensile testing machine comprises a frame, a buckle rotary conveying mechanism for continuously conveying the buckle to be tested is installed in the middle of the inner side of the frame, and stepped seats are fixedly provided on both sides of the buckle rotary conveying mechanism at the top of the frame;

[0009] A side frame is fixedly provided on the top of one of the step seats, and a lock tongue rotary conveying mechanism for cyclically conveying the lock tongue is installed on the top of the side frame;

[0010] A guiding mechanism for guiding and testing the lock buckle and the lock tongue during the conveying process is provided between the lock buckle rotary conveying mechanism and the lock tongue rotary conveying mechanism.

[0011] In a preferred embodiment, the locking rotary conveying mechanism includes a conveyor belt rotatably installed in the middle of the inner side of the frame and driven by a driving motor. A plurality of equally spaced mounting strips are fixedly embedded on the outer side of the conveyor belt, and a load-bearing component is detachably installed on the top of each mounting strip via a locking bolt.

[0012] In a preferred embodiment, the bearing assembly includes a seat frame overlapped on the surface of the mounting strip and two L-shaped seats fixed on the surface of the mounting strip by locking bolts, a round rod is fixedly connected to the middle of the bottom of both sides of the seat frame, and the opposite ends of the two round rods are rotatably mounted with the L-shaped seats on the same side through bearings, and round holes are opened at the bottom ends of both sides of the seat frame, and docking assemblies are movably installed inside the two round holes;

[0013] The two docking assemblies each include a clamping column movably inserted into the corresponding circular hole, a limiting groove is provided on the inner side of the circular hole, a limiting strip slidably connected to the limiting groove is fixedly provided on the outer side of the clamping column, a guide column is movably inserted into the opposite ends of the two clamping columns, a retaining ring is fixedly provided on the outer side of one end of the guide column, and a straight spring 1 is fixedly provided on the outer side of the guide column to fix the retaining ring and the corresponding side clamping column;

[0014] The docking assembly also includes a docking reinforcement portion arranged between opposite ends of the two clamping columns, and the docking reinforcement portion includes a cross block fixed to the end of one of the clamping columns and a cross groove opened at the end of the other clamping column.

[0015] In a preferred embodiment, the two stepped seats are provided with limiting components for auxiliary limiting the seat frame on opposite sides, and the limiting components include a transverse groove opened on the inner side of the stepped seat corresponding to the top of the seat frame and a T-slot corresponding to the docking component, and a vertical groove corresponding to the side retaining ring is opened on the inner side of the T-slot, and guide bars are fixedly connected to the positions on both sides of the T-slot on the inner side of the stepped seat.

[0016] In a preferred embodiment, the bolt rotary conveying mechanism comprises a plurality of columns fixed on the top of the side frame, a bottom plate is fixedly connected between the top surfaces of the plurality of columns, a surrounding frame is sleeved on the outer side of the bottom plate, a closed-loop channel is formed between the bottom plate and the surrounding frame, and a toothed chain belt driven and transmitted by a driving motor is rotatably installed on the top of the bottom plate;

[0017] A vertical block is fixedly provided on the top of the base plate, a connecting block is fixedly connected between the outer side of the vertical block and the inner side of the surrounding frame, a closed-loop channel is formed between the base plate and the surrounding frame, a plurality of racks meshing with the toothed chain belts are movably penetrated inside the channel, and the racks are arranged in a one-to-one correspondence with the bearing components, and a reset component and a buckle component are respectively installed on the top and bottom ends of the racks.

[0018] In a preferred embodiment, the reset assembly includes a fixed plate fixed on the top of the rack and a movable plate movably sleeved on the outside of the rack. The movable sleeve on the outside of the rack is provided with a straight spring three that fixedly connects the fixed plate and the movable plate. The diameter of the movable plate is larger than the width of the closed-loop groove formed between the bottom plate and the surrounding frame.

[0019] In a preferred embodiment, the buckle assembly includes a vertical rod fixedly connected to the bottom end of the rack, a ball is fixedly sleeved on the middle part of the outer side of the vertical rod, a disc is fixedly connected to the bottom end of the vertical rod, and four top rods distributed in a rectangular array are fixedly connected to the bottom of the disc;

[0020] The buckle assembly also includes an arc block arranged at the bottom end of the top rod, a tension sensor is fixedly installed on the top of the outer side of the arc block, and the arc block and the bottom end surfaces of the four top rods are movably fitted, and a straight spring 2 is fixedly connected between the connecting end of the tension sensor and the disc;

[0021] A T-shaped arc groove is provided at one end of the inner side of the arc block, and the T-shaped arc groove is slidably connected to the T-shaped arc block. An arc-shaped through groove connected to the T-shaped arc groove is provided in the middle of the outer side of the arc block, and an elastic part is installed inside the arc-shaped through groove. A double-extension cylinder is fixedly installed at the bottom end of the outer side of the arc block, and the two telescopic ends of the double-extension cylinder are fixedly connected to fork plates.

[0022] In a preferred embodiment, the guiding mechanism includes a straight rod fixedly connected to the outer side of the side frame and a U-shaped rod fixedly connected to the outer side of the frame and corresponding to the straight rod. One end of the straight rod and the U-shaped rod are fixedly connected to a guide bar, and arc grooves are provided on opposite sides of the two guide bars. A track groove for guiding the movement of the ball is formed between the arc grooves on the surfaces of the two guide bars.

[0023] In a preferred embodiment, the top of the frame is further provided with a pressing mechanism installed at one end of the step seat, the pressing mechanism includes two vertical plates fixed to the top of one of the step seats, an L-shaped plate is rotatably installed between the two vertical plates, a horizontal plate is fixedly connected between the top ends of the outer sides of the two vertical plates, and a straight spring four is fixedly connected between the horizontal plate and the L-shaped plate;

[0024] A rotating roller driven by a servo motor is rotatably installed between the two vertical plates, and a shifting plate for shifting the L-shaped plate for deflection is fixedly connected to the outer side of the rotating roller;

[0025] The pressing mechanism also includes a photoelectric sensor fixed on the top of the stepped seat.

[0026] Beneficial effects of the present invention:

[0027] 1. The automobile safety belt fixing seat of the present invention can not only improve the buckling strength between the lock buckle and the lock tongue of the fixing seat, but also make the lock buckle swing within a certain angle range with the T-shaped cylindrical seat as the center, thereby improving the comfort of the safety belt during use;

[0028] 2. The present invention uses a lock buckle rotary conveying mechanism and a lock tongue rotary conveying mechanism to convey the lock buckle and the lock tongue respectively, and with the assistance of the track groove formed between the two guide bars, the step seat and the guide bar connected to the step seat, completes the clamping and fixing of the lock buckle, the clamping and fixing of the lock buckle and the lock tongue, and the test of the tensile performance between the lock buckle and the lock tongue in the buckled state, and automatically releases the buckling state of the lock buckle and the lock tongue after the test is completed, thereby achieving the purpose of continuous testing and improving the test efficiency;

[0029] 3. The fastening assembly of the present invention can automatically clamp and center the hanging lock tongue while completing the hanging of the target lock tongue, ensuring accurate alignment with the lock buckle at the corresponding position. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a schematic diagram of the overall structure of the fixing seat of the present invention;

[0032] Figure 2 It is a cross-sectional schematic diagram of the lock buckle of the fixing seat of the present invention in the front view direction;

[0033] Figure 3 It is a cross-sectional schematic diagram of the lock buckle of the fixing seat of the present invention in the side view direction;

[0034] Figure 4 The present invention Figure 3 A schematic diagram of the structure enlargement of part A;

[0035] Figure 5 It is a schematic diagram of the overall structure of the tensile testing machine of the present invention from a first viewing angle;

[0036] Figure 6 It is a schematic diagram of the overall structure of the tensile testing machine of the present invention from a second viewing angle;

[0037] Figure 7 It is a partial structural schematic diagram of the lock rotary conveying mechanism of the tensile testing machine of the present invention;

[0038] Figure 8It is a schematic diagram of the cross-sectional structure of the load-bearing component of the tensile testing machine of the present invention;

[0039] Fig. 9 It is a schematic diagram of the assembly of the stepped seat and the guide bar of the tensile testing machine of the present invention;

[0040] Fig.10 It is a structural schematic diagram of the lock tongue rotary conveying mechanism of the tensile testing machine of the present invention;

[0041] Fig.11 It is a schematic structural diagram of the fastening assembly of the tensile testing machine of the present invention from a first perspective;

[0042] Fig.12 It is a structural schematic diagram of the fastening assembly of the tensile testing machine of the present invention from a second viewing angle;

[0043] Fig.13 It is a schematic diagram of the pressing mechanism structure of the tensile testing machine of the present invention.

[0044] The reference numerals in the figure are as follows: 1, lock; 2, lock tongue; 3, T-shaped cylindrical seat; 4, arc rod; 5, arc spring; 6, frame; 7, lock rotary conveying mechanism; 71, conveyor belt; 72, mounting bar; 73, bearing assembly; 731, seat frame; 732, round rod; 733, clamping column; 734, guide column; 735, retaining ring; 736, straight spring 1; 737, cross block; 738, cross groove; 739, limiting groove; 731 0, limit strip; 8, lock tongue rotary conveying mechanism; 81, column; 82, bottom plate; 83, frame; 84, vertical block; 85, connecting block; 86, buckle assembly; 861, ball; 862, vertical rod; 863, disc; 864, top rod; 865, arc block; 866, tension sensor; 867, straight spring 2; 868, T-shaped arc groove; 869, T-shaped arc block; 8610, arc-shaped through groove; 8611, elastic member; 86 12. Double extension cylinder; 8613. Fork plate; 87. Rack; 88. Moving plate; 89. Fixed plate; 810. Straight spring three; 811. Toothed chain belt; 9. Guide mechanism; 91. Straight rod; 92. U-shaped rod; 93. Guide strip; 10. Pressing mechanism; 101. Vertical plate; 102. L-shaped plate; 103. Roller; 104. Dial plate; 105. Horizontal plate; 106. Straight spring four; 11. Step seat; 12. Side frame; 13. Photoelectric Sensor; 14, horizontal groove; 15, T-shaped groove; 16, vertical groove; 17, guide bar; 18, push block; 19, straight spring five; 20, plug plate; 21, U-shaped plate; 22, V-shaped bar; 23, slot; 24, L-shaped pressure plate; 25, push bar; 26, wedge groove; 27, stop bar; 28, containing groove; 29, vertical pole; 30, straight spring six; 31, closing plate; 32, bar; 33, torsion spring; 34, limit frame; 35, limit guide groove. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] The tensile testing machine of the present invention is a kind of equipment for testing material properties in the new material industry, and is used for testing the tensile properties of the buckle and the lock tongue of the automobile safety belt after being buckled.

[0047] Refer to the instruction manual Figure 1-4 An automobile safety belt fixing seat according to an embodiment of the present invention comprises a lock buckle 1 and a lock tongue 2. The lock buckle 1 is composed of a buckle seat and a ring plate fixed at the bottom end of the buckle seat. A T-shaped cylindrical seat 3 is movably sleeved inside the ring plate. A ring groove is provided on the inner side of the ring plate. A ring block matching the ring groove is fixedly sleeved on the outer side of the T-shaped cylindrical seat 3. By utilizing the cooperation between the ring block and the ring groove, the lock buckle 1 can be deflected within a certain angle range without dislocation of the T-shaped cylindrical seat 3 and the lock buckle 1, which can improve the safety of a specific group of people to a certain extent. (For example, if you are overweight) to improve the comfort when fastening the seat belt, a convex strip is fixedly provided at the outer edge of the T-shaped cylindrical seat 3, and an arc rod 4 is fixedly connected between the two sides of the convex strip. The buckle seat is movably sleeved on the outside of the arc rod 4, and the positions on the outside of the arc rod 4 located on both sides of the buckle seat are movably sleeved with arc springs 5. The setting of the double-sided arc springs 5 ​​can make the lock buckle 1 automatically return to the correct position when not in use, which is convenient for the buckling operation between the lock tongue 2 and the lock buckle 1 when in use. A locking component for fastening and fixing the lock tongue 2 is provided at the top of the buckle seat.

[0048] Among them, the locking assembly includes two sink grooves opened at the top of the buckle seat and multiple receiving grooves 28 opened on one side of the lock tongue 2. A through groove is connected between the two sink grooves. A push block 18 is movably inserted in the through groove. The two ends of the push block 18 are respectively fixedly connected with a straight spring 5 19 and a U-shaped plate 21. The other end of the straight spring 5 19 is fixedly connected to the inner wall of the corresponding sink groove. Slots 23 are opened at both ends of the U-shaped plate 21. The two slots 23 are movably plugged with plug plates 20 fixedly connected to the inner wall of the corresponding sink groove. A fixed spring 19 is fixed in the middle of the outer side of the U-shaped plate 21. There is a V-shaped bar 22 corresponding to the receiving groove 28 on the lock tongue 2 in the buckled state, wherein the V-shaped bar 22 is set so that its outer bottom end surface is horizontally arranged, which can be used to better buckle the lock tongue 2, and the push block 18 is connected to the straight spring 5 19. Both sides are fixed with a stopper 27, wherein, when the stopper 27 is in contact with the surface of the partition part between the two sinks, the straight spring 5 19 is still in a compressed state, and the plug board 20 in this state always remains plugged into the corresponding slot 23. The tops of the two sinks are respectively provided with a pressing portion and a sealing portion;

[0049] The pressing part includes a limiting guide groove 35 opened at the top of both sides of the corresponding sink cavity, and the two limiting guide grooves 35 are fixedly provided with a vertical rod 29 inside, and an L-shaped pressing plate 24 is movably sleeved between the outer sides of the two vertical rods 29, and the outer sides of the two vertical rods 29 are movably sleeved with a straight spring 6 30 that is fixedly connected to the inner bottom end surface of the limiting guide groove 35 and the inner top end surface of the L-shaped pressing plate 24. The pressing part also includes a push strip 25 fixed to the middle of the inner top end surface of the L-shaped pressing plate 24 and a push block 18 opened in the middle of the top end surface. The wedge-shaped groove 26, the arrangement of the push strip 25 and the wedge-shaped groove 26, can make it possible to release the fastening state of the lock tongue 2 by using the L-shaped pressure plate 24 that compresses the straight spring 6 30 downward to push the push strip 25 to move downward together, so that the push strip 25 is inserted into the wedge-shaped groove 26 and squeezes the arc surface inside the wedge-shaped groove 26, so that the push strip 25 moves in the direction close to the straight spring 5 19, thereby pulling the V-shaped strip 22 on the U-shaped plate 21 out of the receiving groove 28 on the lock tongue 2, and releasing the locking state of the lock tongue 2;

[0050] The sealing part includes a sealing plate 31 installed at the top of the inner side of the corresponding groove and a bar 32 fixed at the top of the inner side of the corresponding groove. A torsion spring 33 is sleeved on the outer side of the bar 32. The two extending ends of the torsion spring 33 are respectively fitted with the sealing plate 31 and the inner side of the corresponding groove. A limiting frame 34 for limiting the two extending ends of the torsion spring 33 is fixed on the outer side of the sealing plate 31 and the inner side of the corresponding groove. The setting of the torsion spring 33 can make the sealing plate 31 deflect upward to block the corresponding groove under the action of the torsion spring 33 when the lock tongue 2 is in a state of not being removed from the lock buckle 1, and the setting of the limiting frame 34 can limit the position of the torsion spring 33 to prevent the torsion spring 33 from shifting.

[0051] It should be noted that, during actual use, the automobile seat belt fixing seat of the present invention can not only improve the buckling strength between the lock buckle 1 and the lock tongue 2 of the fixing seat, but also enable the lock buckle 1 to swing within a certain angle range with the T-shaped cylindrical seat 3 as the center, thereby improving the comfort of the seat belt during use. At the same time, the sealing plate 31 can be used to block the groove on the lock buckle 1 for inserting the lock tongue 2 when not in use, so as to prevent debris from falling into the corresponding groove and affecting the normal insertion of the lock tongue 2.

[0052] Refer to the instruction manual Figure 1 and Figure 5-6 , a tensile testing machine for a car seat belt fixing seat according to an embodiment of the present invention is used to test the tensile performance of the buckle 1 and the lock tongue 2 of the above-mentioned car seat belt fixing seat. The tensile testing machine includes a frame 6, a buckle rotary conveying mechanism 7 for continuously conveying the buckle 1 to be tested is installed in the middle of the inner side of the frame 6, and a stepped seat 11 is fixed on both sides of the buckle rotary conveying mechanism 7 at the top of the frame 6;

[0053] A side frame 12 is fixedly provided on the top of one of the step seats 11, and a lock tongue rotary conveying mechanism 8 for cyclically conveying the lock tongue 2 is installed on the top of the side frame 12;

[0054] A guiding mechanism 9 for guiding and testing the lock buckle 1 and the lock tongue 2 during the conveying process is provided between the lock buckle rotary conveying mechanism 7 and the lock tongue rotary conveying mechanism 8 .

[0055] It should be noted that the present invention utilizes the lock buckle rotary conveying mechanism 7 and the lock tongue rotary conveying mechanism 8 to convey the lock buckle 1 and the lock tongue 2 respectively, and under the joint action of the guiding mechanism 9 and the stepped seat 11, completes the clamping and fixing of the lock buckle 1, the snap-fitting and fixing of the lock buckle 1 and the lock tongue 2, and the testing of the tensile performance between the lock buckle 1 and the lock tongue 2 in the snapped state.

[0056] Specifically, Figure 5 and Figure 7-9 As shown, the locking rotary conveying mechanism 7 includes a conveyor belt 71 rotatably mounted in the middle of the inner side of the frame 6 and driven by a driving motor for transmission. A plurality of mounting bars 72 distributed at equal distances are fixedly embedded on the outer side of the conveyor belt 71. A bearing assembly 73 is detachably mounted on the top of each mounting bar 72 through a locking bolt.

[0057] The bearing assembly 73 includes a seat frame 731 overlapped on the surface of the mounting strip 72 and two L-shaped seats fixed on the surface of the mounting strip 72 by locking bolts. Round rods 732 are fixedly connected to the middle of the bottom of both sides of the seat frame 731. The opposite ends of the two round rods 732 are rotatably mounted with the L-shaped seats on the same side through bearings. Round holes are opened at the bottom ends of both sides of the seat frame 731, and docking assemblies are movably installed inside the two round holes.

[0058] The two docking components each include a clamping column 733 that is movably inserted into the corresponding circular hole, a limiting groove 739 is provided on the inner side of the circular hole, and a limiting strip 7310 that is slidably connected to the inner side of the limiting groove 739 is fixedly provided on the outer side of the clamping column 733, wherein a column rod can be fixedly provided in the middle of the inner side of the limiting groove 739, and a rod groove is provided in the middle of the limiting strip 7310, and the column rod is movably inserted into the rod groove to prevent the clamping column 733 from being completely separated from the circular hole on the seat frame 731. The two clamping columns 733 are facing each other. A guide post 734 is movably connected at one end, a retaining ring 735 is fixedly sleeved outside one end of the guide post 734, and a straight spring 736 is movably sleeved outside the guide post 734 to fix the retaining ring 735 and the corresponding side clamping post 733, wherein when the straight spring 736 is in a natural state, the opposite ends of the two clamping posts 733 are completely hidden inside the circular holes, and during the elastic deformation of the straight spring 736, one end of the guide post 734 and the corresponding clamping post 733 always maintain a movably connected state;

[0059] The docking assembly also includes a docking reinforcement portion disposed between opposite ends of the two clamping columns 733. The docking reinforcement portion includes a cross block 737 fixed to the end of one of the clamping columns 733 and a cross slot 738 opened at the end of the other clamping column 733. The inserted cross block 737 and the cross slot 738 can be used to increase the strength of the docking point of the two clamping columns 733.

[0060] The two stepped seats 11 are provided with a limiting assembly for auxiliary limiting the seat frame 731 on the opposite sides. The limiting assembly includes a transverse groove 14 opened on the inner side of the stepped seat 11 corresponding to the top of the seat frame 731 and a T-slot 15 corresponding to the docking assembly. The inner side of the T-slot 15 is provided with a vertical groove 16 corresponding to the side retaining ring 735. The inner side of the stepped seat 11 located on both sides of the T-slot 15 is fixedly connected with a guide bar 17. The transverse groove 14 is used to limit the corresponding side of the top of the seat frame 731. Guiding and limiting, the T-slot 15 is used to guide and limit the end of the corresponding clamping column 733, and the groove formed between the two relatively arranged vertical grooves 16 is used for the retaining ring 735 to slide and clamp the retaining ring 735, and the guide bar 17 is used to guide the two clamping columns 733 to move towards each other to clamp the ring plate on the lock buckle 1 during the process of synchronous transmission of the bearing assembly 73 with the conveyor belt 71, and cooperate with the transverse groove 14 to limit the corresponding side of the top of the seat frame 731 to enhance the strength of the clamping of the lock buckle 1.

[0061] It should be noted that in the process of guiding the lock buckle 1 for transportation, the lock buckle 1 to be tested is placed one by one inside the empty seat frame 731 at the upper end of the conveyor belt 71, and the cavity on the seat frame 731 is used to pre-limit the placed target part to be tested (i.e., the lock buckle 1). Then, as the conveyor belt 71 is gradually transported to the test station, and during the transportation process, the limiting component on the inner side of the step seat 11 is used to clamp the ring plate on the lock buckle 1, so that the lock buckle to be tested will not separate from the seat frame 731 during the subsequent tensile test.

[0062] Specifically, Figure 5 and Figure 10-12 As shown, the bolt rotary conveying mechanism 8 includes a plurality of columns 81 fixed on the top of the side frame 12, a bottom plate 82 is fixedly connected between the top surfaces of the plurality of columns 81, a surrounding frame 83 is sleeved on the outer side of the bottom plate 82, a closed-loop channel is formed between the bottom plate 82 and the surrounding frame 83, and a toothed chain belt 811 driven and transmitted by a driving motor is rotatably installed on the top of the bottom plate 82;

[0063] A vertical block 84 is fixedly provided on the top of the bottom plate 82, and a connecting block 85 is fixedly connected between the outer side of the vertical block 84 and the inner side of the surrounding frame 83. A closed-loop channel is formed between the bottom plate 82 and the surrounding frame 83, and a plurality of racks 87 meshing with the toothed chain belt 811 are movably provided inside the closed-loop channel. The toothed chain belt 811 for circulating transmission can be used to drive the racks 87 to perform rotary transmission along the closed-loop channel formed between the bottom plate 82 and the surrounding frame 83. The racks 87 and the bearing components 73 are arranged in a one-to-one correspondence, that is, the lock buckle 1 and the lock tongue 2 are kept in synchronous transmission, and the top and bottom ends of the racks 87 are respectively installed with a reset component and a buckle component 86;

[0064] The reset assembly includes a fixed plate 89 fixed to the top of the rack 87 and a movable plate 88 movably sleeved on the outside of the rack 87. A straight spring 810 is movably sleeved on the outside of the rack 87 to fix the fixed plate 89 and the movable plate 88. The diameter of the movable plate 88 is larger than the width of the closed-loop groove formed between the bottom plate 82 and the surrounding frame 83, so as to prevent the rack 87 from completely leaking out of the closed-loop groove formed between the bottom plate 82 and the surrounding frame 83 during the transmission process.

[0065] The buckle assembly 86 includes a vertical rod 862 fixedly connected to the bottom end of the rack 87, a ball 861 is fixedly sleeved on the middle part of the outer side of the vertical rod 862, a disk 863 is fixedly connected to the bottom end of the vertical rod 862, and four top rods 864 distributed in a rectangular array are fixedly connected to the bottom of the disk 863;

[0066] The buckle assembly 86 also includes an arc block 865 arranged at the bottom end of the top rod 864, a tension sensor 866 is fixedly installed at the top end of the outer side of the arc block 865, and the arc block 865 and the bottom end surfaces of the four top rods 864 are movably fitted, and a second straight spring 867 is fixedly connected between the connecting end of the tension sensor 866 and the disc 863, wherein, when the second straight spring 867 is in a natural state, the bottom end of the top rod 864 just contacts the top end of the outer side of the arc block 865, at this time, the connecting end of the tension sensor 866 is in a zero-stress state, and the four top rods 864 are distributed in a rectangular array, so that the initial state of the state of the arc block 865 can be pre-defined, and when the second straight spring 867 is in a natural state, the third straight spring 810 is also in a natural state, so that the ball 861 can smoothly and accurately enter the inside of the guide mechanism 9;

[0067] A T-shaped arc groove 868 is provided at one end of the inner side of the arc block 865, and the T-shaped arc groove 868 is slidably connected to the T-shaped arc block 869. An arc-shaped through groove 8610 connected to the T-shaped arc groove 868 is provided in the middle of the outer side of the arc block 865. An elastic member 8611 is installed inside the arc-shaped through groove 8610, wherein the elastic member 8611 includes an arc rod fixed inside the arc-shaped through groove 8610 and a gusset plate movably sleeved on the outer side of the arc rod, and the gusset plate is fixed on the outer side of the T-shaped arc block 869. On the side, a return spring is movably sleeved on the outer side of the arc rod, which is used to fix the buckle plate and the inner wall of the arc-shaped through groove 8610. In addition, an arc-shaped slot matching the end of the T-shaped arc block 869 is opened at the other end of the arc block 865, and a film pressure sensor is installed at one end of the T-shaped arc block 869 close to the arc slot. A double-extension cylinder 8612 is fixedly installed at the bottom end of the outer side of the arc block 865, and the two telescopic ends of the double-extension cylinder 8612 are fixedly connected with a fork plate 8613.

[0068] Among them, when the corresponding end of the arc block 865 is inserted into the arc slot and triggers the film pressure sensor, the reset spring is still in a compressed state. At this time, the two fork plates 8613 are extended under the action of the double-extension cylinder 8612. When the corresponding end of the arc block 865 is completely separated from the arc slot, the film pressure sensor is not triggered. The double-extension cylinder 8612 controls the two fork plates 8613 to move towards each other, which is convenient for the hanging operation of the lock tongue 2.

[0069] It should be noted that, in the process of guiding the lock tongue 2 to be transported, the lock tongue 2 to be tested is hung on the buckle assembly 86 one by one, and the reset assembly is used to pre-limit the initial position of the target part to be tested (i.e., the lock tongue 2), and then the toothed chain belt 811 is gradually transported to the test station in a cyclic manner, and in the process of transportation, the guide mechanism 9 is used to guide and limit the ball 861, so as to complete the press-fit buckle connection between the lock buckle 1 and the lock tongue 2 and the tensile performance test after the buckle connection between the lock buckle 1 and the lock tongue 2;

[0070] Among them, in the process of hanging the lock tongue 2 to be tested, the T-shaped arc block 869 is driven to be completely stored in the T-shaped arc groove 868 by moving the buckle plate, and the reset spring sleeved on the outside of the arc rod is compressed. After the lock tongue 2 is hung on the inner side of the arc block 865, the force applied to the buckle plate is removed, and the T-shaped arc block 869 is reset under the action of the restoring force of the reset spring, and plugged into the arc slot at the other end of the arc block 865. At the same time, the film pressure sensor is triggered, and the two telescopic ends of the double-extension cylinder 8612 are controlled to extend through the control end, and the lock tongue 2 is clamped by the two fork plates 8613 that move in opposite directions, so as to realize automatic centering and clamping of the hung lock tongue 2.

[0071] Specifically, Fig.10As shown, the guiding mechanism 9 includes a straight rod 91 fixedly connected to the outside of the side frame 12 and a U-shaped rod 92 fixedly connected to the outside of the frame 83 and corresponding to the straight rod 91. One end of the straight rod 91 and the U-shaped rod 92 are fixedly connected to a guiding bar 93. Arc grooves are formed on the opposite sides of the two guiding bars 93, and a track groove for guiding the ball 861 to move is formed between the arc grooves on the surfaces of the two guiding bars 93.

[0072] It should be noted that, in the process of using the track groove to guide the ball 861 to move, when the ball 861 is in the initial position (such as Fig.10 When the locking clasp 1 and the locking clasp 2 are in the state of being fully engaged with each other, the straight spring 3 810 is compressed. Then, the ball 861 gradually rises under the guidance of the track groove. Since the locking clasp 1 and the locking clasp 2 are fastened, the push rod 864 will separate from the corresponding arc block 865 as the ball 861 moves upward. At this time, the straight spring 2 867 will be stretched as the ball 861 rises, and the tension sensor 866 is used to monitor the tension change.

[0073] As the ball 861 gradually rises, the compressed straight spring 810 will first reset, then stretch, and wait until the ball rises to the highest point of the track slot (such as Fig.10 When the fixed plate 89 is higher than the upper end surface of the connecting block, and as the corresponding rack 87 continues to move, the ball 861 will leave the track groove, and at the moment of leaving the track groove, the ball 861 instantly moves to below the bottom end surface of the connecting block 85, so as to ensure the stable circulation of the rack 87.

[0074] Specifically, Figure 6 and Fig.13 As shown, a pressing mechanism 10 installed at one end of the step seat 11 is also provided on the top of the frame 6. The pressing mechanism 10 includes two vertical plates 101 fixed on the top of one of the step seats 11, an L-shaped plate 102 is rotatably installed between the two vertical plates 101, a horizontal plate 105 is fixedly connected between the top ends of the outer sides of the two vertical plates 101, and a straight spring four 106 is fixedly connected between the horizontal plate 105 and the L-shaped plate 102, wherein the straight spring four 106 is in a natural state and when the L-shaped plate 102 is not subjected to other external forces, the state of the L-shaped plate 102 is as follows: Figure 1 As shown, at this time, the inner top end surface of the L-shaped plate 102 just fits with the outer top end surface of the L-shaped pressing plate 24 at the upper end of the lock buckle 1 on the corresponding bearing component 73;

[0075] A roller 103 driven by a servo motor is rotatably installed between the two vertical plates 101, and a shifting plate 104 for shifting the L-shaped plate 102 for deflection is fixedly connected to the outer side of the roller 103;

[0076] The pressing mechanism 10 further includes a photoelectric sensor 13 fixed on the top of the stepped seat 11 for detecting the relative position of the bearing assembly 73 .

[0077] It should be noted that after the tension test is completed, when the photoelectric sensor 13 detects that the bearing assembly 73 has moved to the specified position (that is, the ball 861 has completely left the track groove and has instantly moved downward under the tensile restoring force of the corresponding straight spring 810), the control end controls the servo motor to drive the roller 103 to rotate 360°, and the roller 103 will drive the dial plate 104 to rotate synchronously during the rotation process. Correspondingly, the dial plate 104 will deflect the vertical section of the L-shaped plate 102 during the rotation process, and make The horizontal section of the L-shaped plate 102 is deflected downward, and the L-shaped pressure plate 24 is pressed downward, so that the V-shaped strip 22 on the lock buckle 1 is completely separated from the receiving groove 28 on the lock tongue 2, and the lock tongue 2 is completely separated from the lock buckle 1. The separated lock tongue 2 is rotated and conveyed with the toothed chain belt 811 for use in the next round of tensile performance test. The separated lock buckle 1 is separated from the load-bearing component 73 along with the transmission of the conveyor belt 71, so that the empty load-bearing component 73 is rotated and conveyed to the initial position to be waited for the lock buckle 1 to be tested for the next round of testing.

[0078] In the above technical scheme, the driving motor mentioned is a three-phase asynchronous motor of model y280m-4; the tension sensor mentioned is a tension sensor of model EL20-S458; the film pressure sensor mentioned is a sheet-type differential pressure sensor of model FSR-A406; the double-extension cylinder 8612 mentioned is a standard double-extension rod cylinder of the ESCD series; the servo motor mentioned is a servo driver of model JSMA-PUC02D; the photoelectric sensor 13 mentioned is a miniature photoelectric switch sensor of model EE-SG3.

[0079] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A tensile testing machine for a vehicle seat belt fixing seat, the vehicle seat belt fixing seat comprising a lock buckle (1) and a lock tongue (2), characterized in that: The lock buckle (1) is composed of a buckle seat and a ring plate fixed at the bottom end of the buckle seat, a T-shaped cylindrical seat (3) is movably sleeved inside the ring plate, a ring groove is provided on the inner side of the ring plate, a ring block matching the ring groove is fixedly sleeved on the outer side of the T-shaped cylindrical seat (3), a convex strip is fixedly provided at the outer edge of the T-shaped cylindrical seat (3), an arc rod (4) is fixedly connected between the two sides of the convex strip, the buckle seat is movably sleeved on the outer side of the arc rod (4), and the outer side of the arc rod (4) is movably sleeved with an arc spring (5) at the position on both sides of the buckle seat, and a locking component for fastening and fixing the lock tongue (2) is provided at the top of the buckle seat; The tensile testing machine is used to test the tensile performance of the buckle (1) and the lock tongue (2) of the automobile safety belt fixing seat. The tensile testing machine comprises a frame (6). A buckle rotary conveying mechanism (7) for continuously conveying the buckle (1) to be tested is installed in the middle of the inner side of the frame (6). Step seats (11) are fixedly provided on both sides of the buckle rotary conveying mechanism (7) at the top of the frame (6). The locking rotary conveying mechanism (7) comprises a conveyor belt (71) rotatably mounted on the middle of the inner side of the frame (6) and driven by a driving motor for transmission, a plurality of mounting strips (72) distributed at equal distances are fixedly embedded on the outer side of the conveyor belt (71), and a bearing assembly (73) is detachably mounted on the top of each mounting strip (72) via a locking bolt; The bearing assembly (73) comprises a seat frame (731) overlapped on the surface of the mounting strip (72) and two L-shaped seats fixed on the surface of the mounting strip (72) by means of locking bolts, a round rod (732) is fixedly connected to the middle of the bottom of both sides of the seat frame (731), and the opposite ends of the two round rods (732) are rotatably mounted with the L-shaped seats on the same side by means of bearings, and a round hole is opened at the bottom of both sides of the seat frame (731), and a docking assembly is movably mounted inside the two round holes; The two docking assemblies each comprise a clamping column (733) movably inserted into the corresponding circular hole, a limiting groove (739) is provided on the inner side of the circular hole, a limiting strip (7310) slidably connected to the limiting groove (739) is fixedly provided on the outer side of the clamping column (733), a guide column (734) is movably inserted at the opposite ends of the two clamping columns (733), a retaining ring (735) is fixedly sleeved on the outer side of one end of the guide column (734), and a straight spring (736) is movably sleeved on the outer side of the guide column (734) for fixedly connecting the retaining ring (735) and the corresponding side clamping column (733); The docking assembly further comprises a docking reinforcement portion arranged between opposite ends of the two clamping columns (733), the docking reinforcement portion comprising a cross block (737) fixed to the end of one of the clamping columns (733) and a cross groove (738) opened at the end of the other clamping column (733); A side frame (12) is fixedly provided on the top of one of the step seats (11), and a lock tongue rotary conveying mechanism (8) for cyclically conveying the lock tongue (2) is installed on the top of the side frame (12); A guiding mechanism (9) for guiding and testing the lock buckle (1) and the lock tongue (2) during the conveying process is provided between the lock buckle rotary conveying mechanism (7) and the lock tongue rotary conveying mechanism (8).

2. The tensile testing machine for a vehicle safety belt fixing seat according to claim 1, characterized in that: The two stepped seats (11) are provided with a limiting assembly for assisting in limiting the seat frame (731) on opposite sides thereof. The limiting assembly comprises a transverse groove (14) formed on the inner side of the stepped seat (11) and corresponding to the top end of the seat frame (731) and a T-shaped groove (15) corresponding to the docking assembly. A vertical groove (16) corresponding to the side retaining ring (735) is formed on the inner side of the T-shaped groove (15). Positions on both sides of the T-shaped groove (15) on the inner side of the stepped seat (11) are fixedly connected with guide bars (17).

3. The tensile testing machine for a vehicle safety belt fixing seat according to claim 1, characterized in that: The bolt rotary conveying mechanism (8) comprises a plurality of columns (81) fixed to the top of the side frame (12); a bottom plate (82) is fixedly connected between the top surfaces of the plurality of columns (81); a surrounding frame (83) is sleeved on the outside of the bottom plate (82); a closed-loop channel is formed between the bottom plate (82) and the surrounding frame (83); a toothed chain belt (811) driven and transmitted by a driving motor is rotatably installed on the top of the bottom plate (82); A vertical block (84) is fixedly provided on the top of the bottom plate (82), a connecting block (85) is fixedly connected between the outer side of the vertical block (84) and the inner side of the surrounding frame (83), a closed-loop channel is formed between the bottom plate (82) and the surrounding frame (83), a plurality of racks (87) meshing with the toothed chain belt (811) are movably provided inside the closed-loop channel, and the racks (87) and the bearing components (73) are arranged in a one-to-one correspondence, and a reset component and a buckle component (86) are respectively installed at the top and bottom of the racks (87).

4. The tensile testing machine for a vehicle safety belt fixing seat according to claim 3, characterized in that: The reset assembly comprises a fixed plate (89) fixed to the top of the rack (87) and a movable plate (88) movably sleeved on the outside of the rack (87); a straight spring three (810) is movably sleeved on the outside of the rack (87) for fixedly connecting the fixed plate (89) and the movable plate (88); the diameter of the movable plate (88) is larger than the width of the closed-loop channel formed between the bottom plate (82) and the surrounding frame (83).

5. The tensile testing machine for a vehicle safety belt fixing seat according to claim 3, characterized in that: The buckling assembly (86) comprises a vertical rod (862) fixedly connected to the bottom end of the rack (87); a round ball (861) is fixedly sleeved on the middle part of the outer side of the vertical rod (862); a round disc (863) is fixedly connected to the bottom end of the vertical rod (862); and four top rods (864) distributed in a rectangular array are fixedly connected to the bottom of the round disc (863); The buckle assembly (86) further comprises an arc block (865) arranged at the bottom end of the top rod (864), a tension sensor (866) is fixedly mounted on the top end of the outer side of the arc block (865), and the arc block (865) and the bottom end surfaces of the four top rods (864) are movably fitted, and a second straight spring (867) is fixedly connected between the connecting end of the tension sensor (866) and the disc (863); A T-shaped arc groove (868) is provided at one end of the inner side of the arc block (865), and a T-shaped arc block (869) is slidably connected inside the T-shaped arc groove (868). An arc-shaped through groove (8610) communicating with the T-shaped arc groove (868) is provided at the middle part of the outer side of the arc block (865), and an elastic member (8611) is installed inside the arc-shaped through groove (8610). A double extension cylinder (8612) is fixedly installed at the bottom end of the outer side of the arc block (865), and both telescopic ends of the double extension cylinder (8612) are fixedly connected to a fork plate (8613).

6. The tensile testing machine for a vehicle safety belt fixing seat according to claim 5, characterized in that: The guide mechanism (9) comprises a straight rod (91) fixedly connected to the outside of the side frame (12) and a U-shaped rod (92) fixedly connected to the outside of the surrounding frame (83) and corresponding to the straight rod (91); one end of each of the straight rod (91) and the U-shaped rod (92) is fixedly connected to a guide bar (93); arc grooves are formed on opposite sides of the two guide bars (93); and a track groove for guiding the ball (861) to move is formed between the arc grooves on the surfaces of the two guide bars (93).

7. The tensile testing machine for a vehicle safety belt fixing seat according to claim 1, characterized in that: The top of the frame (6) is also provided with a pressing mechanism (10) installed at one end of the step seat (11), the pressing mechanism (10) comprising two vertical plates (101) fixed at the top of one of the step seats (11), an L-shaped plate (102) rotatably installed between the two vertical plates (101), a horizontal plate (105) fixedly connected between the outer top ends of the two vertical plates (101), and a straight spring (106) fixedly connected between the horizontal plate (105) and the L-shaped plate (102); A rotating roller (103) driven by a servo motor is rotatably mounted between the two vertical plates (101), and a shifting plate (104) for shifting the L-shaped plate (102) for deflection is fixedly connected to the outer side of the rotating roller (103); The pressing mechanism (10) further comprises a photoelectric sensor (13) fixed on the top of the stepped seat (11).

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