A pressure detection device for an automobile safety belt ball tube

Abstract

The application relates to the field of automobile part processing and discloses a pressure detection device for an automobile safety belt ball pipe, which comprises a bottom plate and a support, two supports are fastened on the front and rear sides of the upper surface of the bottom plate through bolts, an intermittent feeding and discharging structure is arranged between the two supports and close to the right side, a detection structure is arranged between the two supports, a cross plate is arranged on the middle of the upper surface of the bottom plate, storage structures are arranged at the two ends of the cross plate, a moving structure and a stop structure are arranged on the lower surface of the bottom plate, intermittent feeding and discharging can be realized, the safety belt ball pipe can be detected in time through the detection structure during the feeding and discharging process, the next safety belt ball pipe can be fed to the detection position in time after detection for continuous detection, the operation is more labor-saving and convenient, and the detection work efficiency is higher; and the storage structures can be used for storing the safety belt ball pipes before and after detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile parts processing, especially to a pressure detection device for automobile safety belt ball pipe. BACKGROUND

[0002] The safety belt ball pipe is a kind of pipe parts used in the automobile safety system function, and the pressure of the safety belt ball pipe needs to be detected in the production and manufacturing process of the safety belt ball pipe, and a detection device is used.

[0003] In the prior art, the safety belt ball pipe pressure detection device controls the extension end of the electric push rod to push the second mounting frame to move, the second straight plate clamp and the second sealing plate move in the direction of the first mounting frame along with the second mounting frame, so that the pipe is clamped between the second sealing plate and the first sealing plate, at this time the two ends of the pipe are sealed by the second sealing plate and the first sealing plate, gas is introduced into the air inlet pipe, and the gas enters the inside of the pipe from the air inlet pipe to perform pressure detection, the detection method is simple and easy to operate, the traditional complex fixing mechanism is simplified, and the detection efficiency is effectively improved.

[0004] However, in actual operation, the safety belt ball pipe needs to be inserted into the positioning cylinder for pressure detection, and after detection, the safety belt ball pipe needs to be taken out from the positioning cylinder, and then the next safety belt ball pipe can be detected, which is time-consuming and laborious, and reduces the detection efficiency, so there is room for improvement. SUMMARY

[0005] In order to solve the problems in the background art, the present application provides a pressure detection device for automobile safety belt ball pipe.

[0006] The pressure detection device for automobile safety belt ball pipe provided by the present application adopts the following technical scheme:

[0007] A pressure detection device for automobile safety belt ball pipe, comprising a bottom plate and a support, two supports are fastened on the front and rear sides of the upper surface of the bottom plate by bolts, an intermittent feeding and discharging structure is arranged between the two supports near the right side, a detection structure is arranged between the two supports, a cross plate is arranged in the middle of the upper surface of the bottom plate, storage structures are arranged at both ends of the cross plate, and a moving structure and a stop structure are arranged on the lower surface of the bottom plate.

[0008] The intermittent feeding and discharging structure comprises two fixed ladders fixedly installed on the support, the lower end of the fixed ladder is arranged on the horizontal plate, a guide groove is formed on one side of the two fixed ladders close to each other, a guide block is slidably arranged in the guide groove, a lifting ladder is installed on the two guide blocks, a first mounting seat is arranged on the right side of the upper surface of the horizontal plate, a cylinder is installed on the first mounting seat, the two lifting ladders are connected through a connecting plate, a first fixed plate is arranged on the connecting plate, the top end of the output shaft of the cylinder is connected to the first fixed plate, the left side of the connecting plate close to the discharging plate, the discharging plate is arranged obliquely, a blocking structure is arranged on the discharging plate, the upper end of the discharging plate is connected to the fixed ladder, a first blocking edge is arranged on the fixed ladder, a detection opening is formed on the first blocking edge at the detection position, and a second blocking edge is arranged on the discharging plate.

[0009] The detection structure comprises a second fixed plate connected to the support, a second mounting seat is arranged on the upper surface of the second fixed plate, a first motor is arranged in the second mounting seat, a first screw rod is connected to each of the two output shafts of the first motor, the thread directions of the two first screw rods are opposite, the first screw rod penetrates through the support, a limiting plate is arranged at one end of the first screw rod, one end of the limiting plate is connected to a limiting rod, one end of the limiting rod is connected to the support, a moving plate is sleeved on the first screw rod and the limiting rod, a threaded groove is formed in the moving plate for the first screw rod to penetrate through, a sealing cover is installed at one end of the moving plate, and a guide cover is installed at one end of the sealing cover.

[0010] Preferably, the storage structure comprises a turnover rod penetrating through both ends of the horizontal plate, a first storage seat is fixedly sleeved on the right turnover rod, a third blocking edge is arranged on the first storage seat, a second storage seat is fixedly sleeved on the left turnover rod, a fourth blocking edge is arranged on the second storage seat, and a driving structure is arranged on the horizontal plate.

[0011] Preferably, the driving structure comprises a groove formed in the upper surface of the horizontal plate, a through groove is formed in each of the front and rear side surfaces of the horizontal plate, a moving strip is slidably arranged in the two groups of through grooves, a first driving plate is connected to each end of the moving strip, a gear is fixedly sleeved on both ends of the turnover rod, a tooth is arranged on the first driving plate and engaged with the gear, a second motor is installed in the middle of the groove, a second screw rod is connected to each of the two output shafts of the second motor, the thread directions of the two second screw rods are opposite, and a threaded groove is formed in the moving strip for the second screw rod to penetrate through.

[0012] Preferably, the guard structure comprises a buffer opening arranged on the blanking plate close to the lower end, the guard plate is movably inserted into the buffer opening, a guard groove is arranged on one side surface of the guard plate, a rubber pad is arranged on the groove wall of the guard groove, the lower end of the guard plate is connected with an L-shaped plate, the L-shaped plate is connected with a second driving plate, one end of the second driving plate is connected with the connecting plate, and the buffer structure is arranged on the L-shaped plate.

[0013] Preferably, the buffer structure comprises two guide rods connected with the guard plate, the guide rods are movably inserted into the L-shaped plate, the buffer rod is connected with the guard plate at the position between the two guide rods, and the spring is sleeved on the buffer rod.

[0014] Preferably, the moving structure comprises support rods connected with the bottom plate at four corners, and universal wheels are arranged at the bottom ends of the support rods.

[0015] Preferably, the stop structure comprises two through grooves arranged on the bottom plate, the through grooves are communicated with the recess, the through plates are movably inserted into the through grooves, the through plates are arranged on the stop plate, and the driving structure is arranged between the through plates and the moving strips.

[0016] Preferably, the driving structure comprises a driving groove arranged on the through plate, and the U-shaped rod is connected with the moving strip and movably inserted into the driving groove.

[0017] In summary, the present application has the following beneficial technical effects:

[0018] The intermittent feeding structure, the storage structure and the detection structure are arranged, intermittent feeding and discharging can be realized, the safety belt ball pipe can be detected in time through the detection structure during feeding and discharging, the next safety belt ball pipe can be fed to the detection position for continuous detection after detection, the operation is more labor-saving and convenient, the detection work efficiency is higher, and the storage structure can be used for storing the safety belt ball pipes before and after detection.

[0019] The first storage seat and the second storage seat on the storage structure can be rotated and unfolded or folded through the driving structure, so that the first storage seat and the second storage seat can be unfolded for storing the safety belt ball pipe during use, and the first storage seat and the second storage seat can be automatically turned up on the horizontal plate during non-use, so that the occupied space of the device is reduced and storage is facilitated.

[0020] The application sets the moving structure, the stop structure and the driving structure, drives the structure to reduce the occupied space when folding the first storage seat and the second storage seat, and automatically lifts the stop structure from the ground through the driving structure, thereby releasing the stop work of the device on the ground, so that the device is moved more labor-saving by using the moving structure;

[0021] The application sets the blocking structure and the buffer structure, and the safety belt ball pipe is blocked and protected on the unloading plate after detection, so that the blocking structure and the buffer structure can block and protect the safety belt ball pipe on the unloading plate during unloading, and the safety belt ball pipe is protected during unloading, so that the problem of excessive impact between the safety belt ball pipes during the unloading process is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structure schematic view of a pressure detection device for a safety belt ball pipe in the embodiment of the application;

[0023] Figure 2 is an enlarged view of the structure at A of the embodiment of the application Figure 1 ;

[0024] Figure 3 is a structure schematic view of the lower part of the horizontal plate in the embodiment of the application;

[0025] Figure 4 is an enlarged view of the structure at B of the embodiment of the application Figure 3 ;

[0026] Figure 5 is an enlarged view of the structure at C of the embodiment of the application Figure 3 ;

[0027] Figure 6 is a structure schematic view of the inside of the horizontal plate in the embodiment of the application;

[0028] Figure 7 is an enlarged view of the structure at D of the embodiment of the application Figure 6 .

[0029] Explanation of reference signs: 1, bottom plate; 2, support; 3, fixed ladder; 4, first shielding edge; 5, detection port; 6, first mounting seat; 7, air cylinder; 8, first fixed plate; 9, connecting plate; 10, lifting ladder; 11, blanking plate; 12, second shielding edge; 13, second fixed plate; 14, second mounting seat; 15, first motor; 16, first screw rod; 17, limiting plate; 18, limiting rod; 19, moving plate; 20, sealing cover; 21, air pipe; 22, guide cover; 23, first storage seat; 24, third shielding edge; 25, second storage seat; 26, fourth shielding edge; 27, turnover rod; 28, cross plate; 29, groove; 30, through groove; 31, moving strip; 32, first driven plate; 33, gear; 34, second motor; 35, second screw rod; 36, buffer port; 37, blocking plate; 38, blocking groove; 39, second driven plate; 40, L-shaped plate; 41, guide rod; 42, buffer rod; 43, spring; 44, support rod; 45, universal wheel; 46, through groove; 47, through plate; 48, stop plate; 49, driven groove; 50, U-shaped rod; 51, guide block; 52, guide groove. DETAILED DESCRIPTION

[0030] The following will be described in detail below with reference to the accompanying drawings Figures 1-7 The application will be further described in detail.

[0031] The embodiment of the application discloses a pressure detection device for a car safety belt ball pipe. Figures 1-7 A pressure detection device for a car safety belt ball pipe, comprising a bottom plate 1 and a support 2, two supports 2 are fastened on the front and rear sides of the upper surface of the bottom plate 1 by bolts, an intermittent feeding and discharging structure is arranged near the right side between the two supports 2, a detection structure is arranged between the two supports 2, a cross plate 28 is arranged in the middle of the upper surface of the bottom plate 1, storage structures are arranged at the two ends of the cross plate 28, and a moving structure and a stop structure are arranged on the lower surface of the bottom plate 1.

[0032] The intermittent feeding and discharging structure comprises two fixed ladders 3 fixedly installed on the supports 2, the lower ends of the two fixed ladders 3 are arranged on the cross plate 28, guide grooves 52 are formed in the side face of each of the two fixed ladders 3 close to each other, guide blocks 51 are slidably arranged in the guide grooves 52, lifting ladders 10 are installed on the two guide blocks 51, a first mounting seat 6 is arranged on the right side of the upper surface of the cross plate 28, an air cylinder 7 is installed on the first mounting seat 6, the two lifting ladders 10 are connected by a connecting plate 9, a first fixed plate 8 is arranged on the connecting plate 9, the output shaft of the air cylinder 7 is connected to the first fixed plate 8, a blanking plate 11 is arranged near the left side between the two supports 2, the blanking plate 11 is arranged obliquely, a blocking structure is arranged on the blanking plate 11, the upper end of the blanking plate 11 is connected to the fixed ladder 3, a first shielding edge 4 is arranged on the fixed ladder 3, a detection port 5 is formed in the first shielding edge 4 at a detection position, and a second shielding edge 12 is arranged on the blanking plate 11.

[0033] The detection structure comprises a second fixing plate 13 connected to the support 2, a second mounting seat 14 arranged on the second fixing plate 13, a first motor 15 arranged in the second mounting seat 14, a first screw rod 16 connected to each of the two output shafts of the first motor 15, the two first screw rods 16 being oppositely threaded, the first screw rod 16 being rotatable through the support 2, a limiting plate 17 arranged at one end of the first screw rod 16, a limiting rod 18 connected to one end of the limiting plate 17 and to the support 2, a moving plate 19 sleeved on the first screw rod 16 and the limiting rod 18, a threaded groove for the first screw rod 16 being arranged in the moving plate 19, a sealing cover 20 mounted at one end of the moving plate 19, a guide cover 22 mounted at one end of the sealing cover 20, and an air pipe 21 connected to one of the sealing covers 20.

[0034] Referring to Figures 1-4 The storage structure comprises a turnover rod 27 rotatably arranged through both ends of the horizontal plate 28, a first storage seat 23 fixedly sleeved on the right turnover rod 27, the first storage seat 23 being downwardly inclined toward the side close to the horizontal plate 28, a third shielding edge 24 arranged on the first storage seat 23, a second storage seat 25 fixedly sleeved on the left turnover rod 27, the second storage seat 25 being downwardly inclined toward the side away from the horizontal plate 28, a fourth shielding edge 26 arranged on the second storage seat 25, and a driving structure arranged on the horizontal plate 28.

[0035] The driving structure comprises a groove 29 formed in the horizontal plate 28, a through groove 30 formed in each of the front and rear side surfaces of the horizontal plate 28 and communicated with the groove 29, a moving strip 31 slidingly arranged in the two groups of through grooves 30, a first driving plate 32 connected to each end of the moving strip 31, a gear 33 fixedly sleeved on each end of the turnover rod 27, a tooth arranged on the first driving plate 32 and engaged with the gear 33, a second motor 34 mounted in the middle of the groove 29, a second screw 35 connected to each output shaft of the second motor 34, the two second screws 35 being oppositely threaded, and a threaded groove formed in the moving strip 31 and through which the second screw 35 passes. When the device is not used, the second motor 34 in the groove 29 is started to drive the two second screws 35 to rotate, the two moving strips 31 move on the horizontal plate 28 towards each other, and the first storage seat 23 and the second storage seat 25 are automatically turned up at the two ends of the horizontal plate 28 through the first driving plate 32 and the gear 33, so as to reduce the occupied space of the device and facilitate storage.

[0036] Referring to Figures 1-5 , the blocking structure comprises a buffer port 36 formed in the lower end of the discharging plate 11, a blocking plate 37 movably inserted into the buffer port 36, a blocking groove 38 formed in one side surface of the blocking plate 37 and provided with a rubber pad on the groove wall, an L-shaped plate 40 connected to the lower end of the blocking plate 37, a second driving plate 39 connected to the L-shaped plate 40, one end of the second driving plate 39 connected to the connecting plate 9, and a buffer structure arranged on the L-shaped plate 40.

[0037] The buffer structure comprises two guide rods 41 connected to the blocking plate 37, the guide rods 41 movably penetrating through the L-shaped plate 40, a buffer rod 42 connected to the blocking plate 37 between the two guide rods 41, and a spring 43 sleeved on the buffer rod 42 and connected to the blocking plate 37 and the L-shaped plate 40 at both ends. When the elevator 10 moves upwards, the blocking plate 37 is moved out of the buffer port 36, so that the safety belt tube rolled down from the discharging plate 11 can roll onto the rubber pad in the blocking groove 38, and the force generated by the safety belt tube on the blocking plate 37 pushes the blocking plate 37 to move on the L-shaped plate 40, drives the spring 43 to deform, and thus plays a buffering role, avoids the safety belt tube directly impacting the safety belt tube in the second storage seat 25, reduces the impact force, and avoids the problem of safety belt tube breakage. When the elevator 10 moves downwards, the blocking plate 37 is moved to reset, so that the safety belt tube on the discharging plate 11 can be smoothly rolled into the second storage seat 25 for storage.

[0038] Participate Figure 1 , Figure 6 and Figure 7 , the moving structure comprises a support rod 44 connected to the bottom plate 1 at four corners, and a universal wheel 45 mounted at the bottom end of the support rod 44.

[0039] The stop structure comprises two through grooves 46 formed on the bottom plate 1, the through grooves 46 are communicated with the recess 29, the through plates 47 are movably arranged in the through grooves 46, the two through plates 47 are movably arranged on the stop plate 48, and the through plates 47 are arranged with the moving strip 31 through a driving structure;

[0040] The driving structure comprises a driving groove 49 formed on the through plate 47, and the U-shaped rod 50 is connected to the moving strip 31 and movably arranged in the driving groove 49; when the moving strip 31 moves to drive the first storage seat 23 and the second storage seat 25, the moving strip 31 drives the U-shaped rod 50 to slide in the driving groove 49, the U-shaped rod 50 is used to extrude the groove wall of the driving groove 49, and the through plate 47 is pushed to move upwards, so that the stop plate 48 is lifted on the ground, the stop work of the device is released, and the rolling of the universal wheel 45 is used to make the movement of the device more labor-saving and convenient.

[0041] The implementation principle of the pressure detection device for the automobile safety belt ball pipe is as follows: first, the safety belt ball pipe to be detected is stored in the first storage seat 23, the safety belt ball pipes stored in the first storage seat 23 are rolled on the horizontal plate 28 in turn, then, the air cylinder 7 on the first mounting seat 6 drives the elevator 10 to move up and down reciprocatingly, so as to feed the safety belt ball pipe on the horizontal plate 28 to the fixed ladder 3, and with the up and down movement of the elevator 10, the safety belt ball pipe can be intermittently moved on the fixed ladder 3, when the safety belt ball pipe moves to the detection port 5 on the fixed ladder 3, the first motor 15 on the second mounting seat 14 drives two first screw rods 16 to rotate, two moving plates 19 drive two sealing covers 20 to move and abut against two ends of the safety belt ball pipe, and the guide cover 22 on the sealing cover 20 plays a guiding role, the inner diameter of the guide cover 22 is smaller and closer to the sealing cover 20, so that the safety belt ball pipe can be smoothly abutted against the two sealing covers 20, then air is introduced into the safety belt ball pipe through the air pipe 21, so as to perform the pressure detection work on the safety belt ball pipe, after detection, the first motor 15 drives the first screw rod 16 to rotate reversely, so as to drive the two sealing covers 20 to move reversely and reset, then, the air cylinder 7 is continuously started to drive the elevator 10 to move, so as to feed the detected safety belt ball pipe upward at the detection port 5, at the same time, the next safety belt ball pipe is timely fed to the detection port 5, the detection work is continuously performed, and in the process that the elevator 10 moves upward to feed the detected safety belt ball pipe to the discharge plate 11, the blocking plate 37 is driven by the second driving plate 39 to move out of the buffer port 36, so that the safety belt ball pipe rolled off the discharge plate 11 can be rolled on the rubber pad in the blocking groove 38, and the safety belt ball pipe generates a force on the blocking plate 37, which drives the blocking plate 37 to move on the L-shaped plate 40, drives the spring 43 to deform, so as to play a buffering role, avoiding that the safety belt ball pipe rolled off the discharge plate 11 directly impacts on the safety belt ball pipe in the second storage seat 25, so as to reduce the impact degree and avoid the problem of breakage of the safety belt ball pipe, and when the elevator 10 moves downward, the blocking plate 37 is driven to move and reset, so that the safety belt ball pipe on the discharge plate 11 can be smoothly rolled into the second storage seat 25, so that the pressure detection work on the safety belt ball pipe can be realized.

[0042] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A pressure detection device for a car safety belt ball pipe, comprising a bottom plate (1) and a support (2), characterized in that: The bottom plate (1) is bolted with two supports (2) on the front and rear sides, intermittent feeding and discharging structures are arranged between the two supports (2) near the right side, detection structures are arranged between the two supports (2), a cross plate (28) is arranged on the middle of the bottom plate (1), storage structures are arranged at the two ends of the cross plate (28), and moving structures and stop structures are arranged on the bottom plate (1); The intermittent feeding and discharging structure comprises two fixed ladders (3) fixedly installed on the supports (2), the lower ends of the fixed ladders (3) are arranged on the cross plate (28), guide grooves (52) are formed in the sides close to each other of the two fixed ladders (3), guide blocks (51) are slidably arranged in the guide grooves (52), lifting ladders (10) are installed on the two guide blocks (51), a first mounting seat (6) is arranged on the right side of the cross plate (28), a cylinder (7) is installed on the first mounting seat (6), the two lifting ladders (10) are connected through a connecting plate (9), a first fixed plate (8) is arranged on the connecting plate (9), the output shaft of the cylinder (7) is connected to the first fixed plate (8), a discharging plate (11) is arranged between the supports (2) near the left side, the discharging plate (11) is arranged obliquely, a blocking structure is arranged on the discharging plate (11), the upper end of the discharging plate (11) is connected to the fixed ladder (3), a first blocking rail (4) is arranged on the fixed ladder (3), a detection opening (5) is formed in the first blocking rail (4) at a detection position, and a second blocking rail (12) is arranged on the discharging plate (11); The detection structure comprises a second fixed plate (13) connected to the support (2), a second mounting seat (14) is arranged on the upper surface of the second fixed plate (13), a first motor (15) is arranged in the second mounting seat (14), first screws (16) are connected to the two output shafts of the first motor (15), the two first screws (16) are oppositely threaded, the first screws (16) are rotatably arranged through the support (2), a limiting plate (17) is arranged at one end of the first screw (16), a limiting rod (18) is connected to one end of the limiting plate (17), one end of the limiting rod (18) is connected to the support (2), a moving plate (19) is sleeved on the first screw (16) and the limiting rod (18), a threaded groove through which the first screw (16) passes is formed in the moving plate (19), a sealing cover (20) is installed at one end of the moving plate (19), a guide cover (22) is installed at one end of the sealing cover (20), and one of the sealing covers (20) is connected with an air pipe (21); The guard structure includes a buffer port (36) opened on the lower end of the blanking plate (11), the buffer port (36) is movably inserted into the guard plate (37), a guard groove (38) is opened on one side of the guard plate (37), a rubber pad is arranged on the groove wall of the guard groove (38), the lower end of the guard plate (37) is connected with an L-shaped plate (40), the L-shaped plate (40) is connected with a second driving plate (39), one end of the second driving plate (39) is connected with the connecting plate (9), and a buffer structure is arranged on the L-shaped plate (40). The buffer structure includes two guide rods (41) connected with the guard plate (37), the guide rods (41) movably pass through the L-shaped plate (40), the buffer rod (42) is connected between the two guide rods (41) on one side of the guard plate (37), the spring (43) is sleeved on the buffer rod (42), and the two ends of the spring (43) are connected with the guard plate (37) and the L-shaped plate (40) respectively.

2. The pressure detection device for the automobile safety belt ball pipe according to claim 1, characterized in that: The storage structure includes a turnover rod (27) rotatably penetrating through both ends of the horizontal plate (28), a first storage seat (23) is fixedly sleeved on the right side of the turnover rod (27), a third shielding edge (24) is arranged on the first storage seat (23), a second storage seat (25) is fixedly sleeved on the left side of the turnover rod (27), and a fourth shielding edge (26) is arranged on the second storage seat (25). The horizontal plate (28) is provided with a driving structure.

3. The pressure detection device for the automobile safety belt ball pipe according to claim 2, characterized in that: The driving structure includes a groove (29) opened on the horizontal plate (28), a through groove (30) communicating with the groove (29) is opened on the front and rear sides of the horizontal plate (28), two groups of the through grooves (30) are slidably provided with a moving strip (31), the two ends of the moving strip (31) are connected with a first driving plate (32), gear wheels (33) are fixedly sleeved on both ends of the turnover rod (27), the first driving plate (32) is provided with gear teeth meshed and connected with the gear wheels (33), a second motor (34) is installed in the middle of the groove (29), second screws (35) are connected on the two output shafts of the second motor (34), the two second screws (35) are opposite in screw direction, and a threaded groove is opened on the moving strip (31) for the second screw (35) to pass through.

4. The pressure detection device for the ball joint of the safety belt of an automobile according to claim 1, characterized in that: The moving structure includes support rods (44) connected at four corners of the bottom plate (1), and universal wheels (45) are installed at the bottom ends of the support rods (44).

5. The pressure detection device for the automobile safety belt ball pipe according to claim 1, characterized in that: The stop structure includes two through grooves (46) opened on the bottom plate (1), the through grooves (46) communicate with the groove (29), the through grooves (46) movably pass through through plates (47), the two through plates (47) are installed on a stop plate (48) at the bottom, and a driving structure is arranged between the through plates (47) and the moving strip (31).

6. A pressure detection device for an airbag inflator according to claim 5, wherein: The driving structure includes a driving groove (49) opened on the through plate (47), and a U-shaped rod (50) is connected to the moving strip (31) and movably passes through the driving groove (49).

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