CN220446232U - Fixing device for universal safety belt retractor - Google Patents

Abstract

The utility model provides a universal safety belt retractor fixing device, which comprises a base, a retractor fixing plate and an angle adjusting mechanism, the base comprises a bottom plate and supporting plates arranged on two opposite sides of the bottom plate, and the retractor fixing plate is connected between the two supporting plates through a rotating shaft; an angle indicating disc is arranged on at least one supporting plate, and a pointer pointing to the scale of the angle indicating disc is fixedly arranged on one side of the retractor fixing plate corresponding to the angle indicating disc; the upper part of the retractor fixing plate is provided with a notch for avoiding a seat belt webbing, and a first through hole for fixing the retractor is arranged below the notch; the angle adjusting mechanism is connected with the supporting plate, used for adjusting the included angle between the retractor fixing plate and the vertical surface. The fixing device of the utility model enables the assembly of the retractor the angle can be locked at any position of 0-180 degrees; the notch that the coiler fixed plate upper portion set up can dodge the meshbelt, and is little to the friction influence of meshbelt.

Description

Fixing device for universal safety belt retractor

Technical Field

The utility model relates to the technical field of safety belt tests, in particular to a universal safety belt retractor fixing device.

Background

In the test process of the whole car safety development, the safety belt retractor assembly is required to be subjected to tests such as vehicle acceleration simulation, tilting, rolling and the like, so that a safety belt for protecting the safety of passengers is developed safely and reliably, the safety belt retractor cannot be directly connected with equipment due to the limitation of the equipment, special clamps are required to be manufactured, the real car assembly requirement is simulated, and the tests such as relevant test, development, rechecking and the like of the safety belt retractor can be completed. The industry adopts a self-made special test fixture for special vehicles, on one hand, the self-made special test fixture is influenced by the structure, and the friction force is large in the test process, so that the test result is influenced; on the other hand, at present, as the number of vehicle types is increased, the modeling of the vehicle is also increased, the assembly angle of the safety belt retractor is changed from the original angles of 0 DEG and 90 DEG to a plurality of angles between 0 DEG and 180 DEG, the existing clamp can not meet the assembly requirement of the vehicle types, and the development period of the vehicle types is indirectly increased.

The electronic locking safety belt is different from the existing safety belt with the locking function realized by the steel balls, and the electronic locking safety belt provides signals through the whole vehicle control unit so as to control the realization of the locking and unlocking functions of the safety belt. Currently, due to the technical upgrade of automatic driving, the adjustment flexibility of a seat is increased, and the electronic locking safety belt has the advantages of large adjustment angle, sensitive response and the like in the aspects of arrangement and function realization of the safety belt, so that the use of the electronic locking safety belt becomes the main stream of the future automobile industry. However, the conventional automobile part verification tool cannot meet the test of part of vehicle-mounted functions, for example, the inclination and acceleration locking verification method of the electronic locking safety belt is blank, and due to the limitations of the existing equipment and the test method, the safety belt retractor cannot receive a locking signal and thus cannot test the locking function of the safety belt due to the lack of the test tool for the electronic locking safety belt. Therefore, development of a test tool and a test method for an electronic locking safety belt is needed, the function of the electronic locking safety belt is verified, and the approval progress of the whole vehicle is ensured.

Disclosure of Invention

In order to solve one or more of the above technical problems, the present utility model provides a universal safety belt retractor fixing device, which enables an assembly angle of a retractor to be locked at any position of 0 ° -180 °; the upper part of the retractor fixing plate is provided with a notch which can be used for avoiding the webbing of the safety belt.

The utility model solves the technical problems by adopting the following technical scheme:

the utility model provides a general safety belt retractor fixing device, includes base, retractor fixed plate and angle adjustment mechanism, the base includes the bottom plate and sets up the backup pad in the opposite both sides of bottom plate, retractor fixed plate passes through the rotation axis to be connected between two backup pads, retractor fixed plate can rotate around the straight line that the axis of rotation axis is located; at least one supporting plate is provided with an angle indicating disc, and the circle center of the angle indicating disc is positioned on the straight line where the axis of the rotating shaft is positioned; a pointer pointing to the scale of the angle indicating disc is fixedly arranged on one side of the retractor fixing plate corresponding to the angle indicating disc; the upper part of the retractor fixing plate is provided with a notch for avoiding a seat belt webbing, and a first through hole for fixing the retractor is arranged below the notch; the angle adjusting mechanism is connected to the supporting plate and used for adjusting the included angle between the retractor fixing plate and the vertical surface.

Further, the angle adjusting mechanism comprises a driving motor and a driving shaft, one end of the driving shaft is connected with an output shaft of the driving motor, and the other end of the driving shaft penetrates through the supporting plate and is fixed on the retractor fixing plate; the drive shaft is collinear with the axis of the rotating shaft such that the drive motor drives the retractor mounting plate to rotate about both the drive shaft and the rotating shaft.

Further, the driving shaft is sleeved outside the rotating shaft; or, the driving shaft is the rotating shaft, so that the structure is simplified, and the rotating stability of the retractor fixing plate is improved.

Further, the angle adjusting mechanism is a clamping bolt and a first guide hole, the first guide hole is an arc-shaped through hole arranged on one supporting plate, and the circle center of the first guide hole is positioned on the straight line where the axis of the rotating shaft is positioned; one side of the retractor fixing plate corresponding to the first guide hole is provided with a first threaded hole matched with a clamping bolt, the clamping bolt can penetrate through the first guide hole to be screwed into the first threaded hole, the mounting position of the clamping bolt moves on the first guide hole, and the retractor fixing plate can be locked at any angle to be matched with the mounting positions of different retractor fixing plates.

Further, the angle adjusting mechanism further comprises a threaded handle, a second guide hole is formed in the supporting plate opposite to the supporting plate provided with the first threaded hole, the second guide hole is an arc-shaped through hole, and the circle center of the second guide hole is located on the straight line where the axis of the rotating shaft is located; the one side of the retractor fixed plate corresponding with the second guiding hole is provided with the second screw hole with screw thread handle looks adaptation, the pole portion of screw thread handle can pass the second guiding hole and screw in the second screw hole, the pole portion and the second guiding hole clearance fit of screw thread handle, the head butt of screw thread handle is in the backup pad, through the rotatory retractor fixed plate of screw thread handle, convenient operation.

Further, the first guide hole is the same as the second guide hole, and the first threaded hole is the same as the second threaded hole, so that the two support plates are the same, the universality is realized, and the structure and the assembly process are simplified.

Further, the lower part of the notch is consistent with the shape of the retractor positioning pin, preferably, the lower part of the notch is wider than the retractor positioning pin, and can be used for avoiding the retractor positioning pin.

Further, the scale of the angle indicating disc ranges from 0 to 180 degrees, the first guide hole and the second guide hole are semicircular, the fixing plate of the retractor can be adjusted within the range of 0-180 degrees, and the retractor is suitable for safety belts with more installation angles and has wide application range.

Further, a gasket is arranged between the pointer and the retractor fixing plate, so that the pointer is prevented from interfering with the angle indicating disc when the retractor fixing plate rotates, friction when the pointer rotates is reduced, and the pointer rotates smoothly.

Further, the top of backup pad is semi-circular, the coiler fixed plate is the T font, the upper portion of coiler fixed plate is located the backup pad top, makes this fixing device compact structure.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The safety belt retractor fixing device is compact in structure, the assembling angle can be locked at any position of 0-180 degrees, the safety belt retractor fixing device can be suitable for more vehicle types, the manufacturing cost of test fixtures is reduced, the development period of the vehicle types is indirectly shortened, and the test efficiency is improved.

(2) This safety belt retractor fixing device holds the safety belt retractor and fixes in its inside, stable in structure, the upper portion of retractor fixed plate is provided with the breach, can dodge the safety belt meshbelt, and is little to the friction influence of meshbelt, effectively reduces auxiliary device to meshbelt displacement, acceleration and retractor locking angle's influence, can effectively improve the experimental accuracy of safety belt.

(3) The electronic locking safety belt test tool establishes signal transmission between the test tool and the electronic locking unit of the safety belt retractor, and can effectively control locking and unlocking of the safety belt retractor, so that verification of the locking function of the electronic locking safety belt is realized.

(4) A test method for the locking function of the electronic locking safety belt is established, verification of the locking function of the electronic locking safety belt is realized, and the test method is accurate and reliable.

Drawings

Fig. 1 is a schematic structural view of a general seatbelt retractor fixing device of the present utility model.

Fig. 2 is an exploded view of the general seatbelt retractor fixing device of the present utility model.

FIG. 3 is a flow chart of an electronic locking safety belt locking test of the present utility model.

FIG. 4 is a logic diagram of an acceleration lock test control of the present utility model.

FIG. 5 is a control logic diagram of the angle sensitive lock-up test of the present utility model.

In the figure: 1-retractor fixtures; 11-retractor fixation plate; 111-a notch; 112-a first through hole; 113-a second threaded hole; 12-a bottom plate; 13-a support plate; 131-a first guide hole; 132-a second guide hole; 14-a rotation axis; 141-a bearing; 15-an angle indicating disc; 16-pointer; 17-clamping bolts; 18-a threaded handle; 19-spacer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail below by referring to the accompanying drawings and examples.

In the description of the present utility model, it should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

The present embodiment provides a generic seatbelt retractor fixing device 1, shown with reference to fig. 1 and 2, including a base, a retractor fixing plate 11, and an angle adjusting mechanism. The base comprises a bottom plate 12 and supporting plates 13 arranged on two opposite sides of the bottom plate 12, wherein the two supporting plates 13 are fixed on two sides of the bottom plate 12 and can be detachably fixed through bolts. The retractor fixing plate 11 is connected between the two support plates 13 through a rotation shaft 14, and the retractor fixing plate 11 can be rotated in a straight line around the axis of the rotation shaft 14. At least one supporting plate 13 is provided with an angle indicating disc 15, and the circle center of the angle indicating disc 15 is positioned on the straight line where the axis of the rotating shaft 14 is positioned; a pointer 16 for pointing to the scale of the angle indication plate 15 is fixedly provided at one side of the retractor fixing plate 11 corresponding to the angle indication plate 15. Preferably, the two support plates 13 are provided with angle indicating discs 15, and two sides of the retractor fixing plate 11 are correspondingly provided with a pointer 16 respectively, so that the angle can be conveniently observed from any side. The upper portion of the retractor fixing plate 11 is provided with a notch 111 for avoiding the webbing of the safety belt, so that the webbing is prevented from rubbing against the retractor fixing plate 11, and smooth pulling-out and recovery of the webbing are ensured. A first through hole 112 for fixing the retractor is arranged below the notch 111, preferably, the first through hole 112 is a oblong hole or a round hole slightly larger than the retractor fixing hole, and the fixing position of the retractor can be slightly adjusted. The angle adjusting mechanism is connected to the supporting plate 13, and is used for adjusting the included angle between the retractor fixing plate 11 and the vertical surface, and locking the retractor fixing plate 11 according to the assembly angle on the real vehicle.

The angle adjusting mechanism comprises a driving motor and a driving shaft, one end of the driving shaft is connected with an output shaft of the driving motor, and the other end of the driving shaft penetrates through the supporting plate 13 and is fixed on the retractor fixing plate 11; the drive shaft is collinear with the axis of the rotary shaft 14, so that the drive motor drives the retractor fixing plate 11 to rotate around the drive shaft and the rotary shaft 14 simultaneously. Preferably, the driving shaft is sleeved outside the rotating shaft 14, and the driving shaft may be provided in a cylindrical shape, sleeved outside the rotating shaft 14, and fixed with the rotating shaft 14. Preferably, the driving shaft is the rotating shaft 14, so that the device structure can be simplified, and the rotating stability of the retractor fixing plate 11 can be improved. The rotation shaft 14 and the support plate 13 may be connected by a bearing 141, so that the rotation shaft 14 rotates smoothly.

When the safety belt retractor is used, the driving motor is started, the driving motor drives the driving shaft to rotate, the retractor fixing plate 11 is driven to rotate, the pointer 16 on the retractor fixing plate 11 rotates until the scale of the pointer 16 pointing to the angle indicating disc 15 accords with the assembly angle of a safety belt retractor real vehicle, and then the driving motor is stopped, so that the retractor fixing plate 11 is locked at the angle. The retractor fixing hole is then aligned with the first through hole 112, and the retractor is fixed to the retractor fixing plate 11 using bolts and nuts, so that the installation angle of the seatbelt retractor simulates the assembly angle of a real vehicle.

Preferably, the scale of the angle indicating plate 15 is in the range of 0-180 °, for convenience of reading, the scale may be set to 0 in the middle and extend to 90 ° on both sides. The retractor fixing plate 11 can be adjusted within the range of 0-180 degrees, the retractor fixing plate 11 is rotated to a corresponding angle for safety belts with different assembly angles, the retractor with safety belts with more installation angles can be adapted, the application range is wide, the retractor is applicable to more vehicle types, a special fixture for manufacturing each vehicle type is not needed, the manufacturing cost of a test fixture can be reduced, the development period of the vehicle type is indirectly shortened, and the test efficiency is improved. The fixing device can bear the force of 23kN at least, has high tensile strength, accommodates and fixes the safety belt retractor in the safety belt retractor, and has very stable structure.

Preferably, the lower portion of the notch 111 is wider than the positioning pin of the retractor; more preferably, the lower portion of the notch 111 is consistent with the shape of the retractor positioning pin, and can be used for avoiding the retractor positioning pin, so that the retractor positioning pin is accommodated in the notch 111, the mounting surface of the retractor, which is in contact with the retractor fixing plate 11, is kept flat, the retractor and the retractor fixing plate 11 are stably connected, and the real vehicle mounting state of the retractor is more met.

The retractor fixing plate 11 can rotate in a range of 0-180 degrees around the rotating shaft 14 with the pointer 16, and in order to enable the pointer 16 to rotate smoothly, a gasket 19 is arranged between the pointer 16 and the retractor fixing plate 11, so that the pointer 16 and the angle indicating disc 15 can be prevented from interfering when the retractor fixing plate 11 rotates, and friction when the pointer 16 rotates is reduced. The top of the support plate 13 may be configured as a semicircle, the retractor fixing plate 11 is configured as a T-shape, and the upper portion of the retractor fixing plate 11 having the pointer 16 mounted thereon is slightly wider than the distance between the two support plates 13, so that the upper portion of the retractor fixing plate 11 is positioned above the support plate 13, and thus the retractor fixing plate 11 rotates around the semicircle top of the support plate 13, the fixing device is more compact.

Example 2

Referring to fig. 1 and 2, this embodiment provides a universal seatbelt retractor fixing apparatus 1, other components of this embodiment are the same as those of embodiment 1, and the angle adjusting mechanism is a clamping bolt 17 and a first guiding hole 131, the first guiding hole 131 is an arc-shaped through hole provided on one supporting plate 13, and a center of the first guiding hole 131 is located on a straight line where an axis of a rotating shaft 14 is located, unlike embodiment 1; the retractor fixing plate 11 is provided at one side thereof corresponding to the first guide hole 131 with a first screw hole adapted to the clamping bolt 17, and the clamping bolt 17 can be screwed into the first screw hole through the first guide hole 131.

When the safety belt retractor is used, the clamping bolt 17 is unscrewed, the retractor fixing plate 11 is stirred, the retractor fixing plate 11 rotates around the rotating shaft 14, the pointer 16 on the retractor fixing plate 11 is driven to rotate until the scale of the pointer 16 pointing to the angle indicating disc 15 accords with the assembly angle of a safety belt retractor real vehicle, the clamping bolt 17 is screwed, and the retractor fixing plate 11 is locked at the angle. The first guiding hole 131 is an arc through hole formed in one supporting plate 13, the center of the first guiding hole 131 is located on a straight line where the axis of the rotating shaft 14 is located, the mounting position of the clamping bolt 17 can move on the first guiding hole 131, and the retractor fixing plate 11 can be locked at any angle to adapt to the mounting positions of different retractor fixing plates 11.

Preferably, the angle adjusting mechanism further comprises a threaded handle 18, a second guide hole 132 is arranged on the supporting plate 13 opposite to the supporting plate 13 provided with the first threaded hole, the second guide hole 132 is an arc-shaped through hole, and the circle center of the second guide hole 132 is positioned on the straight line where the axis of the rotating shaft 14 is positioned; the side of the retractor fixing plate 11 corresponding to the second guide hole 132 is provided with a second screw hole 113 adapted to the screw handle 18, and the rod portion of the screw handle 18 can be screwed into the second screw hole 113 through the second guide hole 132, preferably, the rod portion of the screw handle 18 is in clearance fit with the second guide hole 132, and the head portion of the screw handle 18 is abutted against the support plate 13. When the safety belt retractor is used, after the clamping bolt 17 is unscrewed, the screw handle 18 is unscrewed slightly, the head of the screw handle 18 can be held, the screw handle 18 moves in the second guide hole 132 to drive the retractor fixing plate 11 to rotate, and when the scale of the pointer 16 pointing to the angle indicating disc 15 accords with the assembly angle of a safety belt retractor real vehicle, the clamping bolt 17 and the screw handle 18 are screwed, and the retractor fixing plate 11 is locked at the angle. The retractor fixing plate 11 is rotated by the screw handle 18, so that the operation is more convenient. The manual rotation of the retractor fixing plate 11, the adoption of the clamping bolt 17 and the threaded handle 18 to lock the installation angle of the retractor, can reduce the cost of the fixing device and strengthen the structural stability of the fixing device.

Preferably, the first guide hole 131 is identical to the second guide hole 132, and the first screw hole is identical to the second screw hole 113, so that the two support plates 13 are identical, thereby simplifying the structure and assembly process of the fixing device.

In order to make the retractor fixing plate 11 adjustable within the range of 0-180 °, the first guide hole 131 and the second guide hole 132 are at least semicircular, so that the retractor fixing plate 11 can be locked at any angle of 0-180 ° to adapt to the seatbelt retractor with more installation angles.

The utility model also provides an electronic locking safety belt test fixture, comprises a retractor fixing device 1, a signal acquisition device and a control module; the retractor fixing device 1 may be the retractor fixing device 1, and the signal collecting device is electrically connected with the control module, and is used for collecting a motion signal of the retractor and sending the collected signal to the control module; the control module is electrically connected with the safety belt electronic locking unit arranged in the retractor and used for controlling the safety belt electronic locking unit to be locked or unlocked.

By using the electronic locking safety belt test fixture, the reliability of an electronic locking safety belt can be verified, and the retractor fixing device 1 can be installed on a corresponding test bed according to specific test requirements, and the motion data of a corresponding safety belt retractor can be acquired by using a required signal acquisition device. For example, a seat belt feel lock-up test, a webbing feel (webbing sensitivity) lock-up test, a tilt lock-up test, an angle sensitive lock-up test, and the like may be performed. Specifically, when the device is used for a safety belt acceleration locking test, the signal acquisition device comprises a tool acceleration sensor and is used for acquiring the acceleration of the motion of the retractor; preferably, the tool displacement sensor is further included and is used for collecting the displacement of the motion of the retractor. When the device is used for a safety belt angle-sensitive locking test, the signal acquisition device comprises a tool angle sensor and is used for acquiring the overturning angle of the retractor.

The test bed comprises an installation flat plate, a guide wheel and a movement mechanism, wherein the guide wheel is connected to the installation flat plate through a bracket and used for guiding the webbing, and the movement mechanism is connected to the installation flat plate and used for driving the installation flat plate to move. The mounting plate is used for fixing the bottom plate 12, the bottom plate 12 is provided with mounting holes matched with the mounting plate, the bottom plate 12 can be generally fixed on the mounting plate through bolting, and the retractor fixing device 1 and the mounting plate form an integrated structure, so that the safety belt retractor fixing device 1 moves along with the mounting plate. The signal acquisition device, such as a displacement sensor, an acceleration sensor, an angle sensor and the like, is fixed on the bottom plate 12 of the retractor fixing device 1 or on the mounting flat plate, so that the retractor and the mounting flat plate are positioned in the same inertial system, the stability of the test process is ensured, and the acquired movement data of the retractor is accurate and reliable. Preferably, the signal acquisition device and control module may be powered using a 12V wireless power supply in order to minimize the impact on the acquired motion data of the retractor.

During the test, the mounting flat plate moves together with the safety belt retractor fixing device 1 and the signal acquisition device, the signal acquisition device moves synchronously with the retractor, can accurately acquire the movement signal of the retractor, and sends the acquired movement signal of the retractor to the control module, the control module analyzes the movement signal of the retractor, and if the locking requirement is met, the control module sends a locking signal to the safety belt electronic locking unit to control the safety belt electronic locking unit to be locked; if the unlocking requirement is met, the control module sends an unlocking signal to the safety belt electronic locking unit to control the safety belt electronic locking unit to unlock, so that signal transmission between the test tool and the safety belt electronic locking unit is established, locking and unlocking of the safety belt retractor are effectively controlled, and verification of the locking function of the electronic locking safety belt is realized.

When the bottom plate 12 is located at the initial position, the bottom plate 12 needs to be ensured to be horizontally and fixedly arranged, the error between the bottom plate and the horizontal plane is within +/-0.5 degrees, the influence on the locking angle or acceleration of the safety belt retractor is avoided, and the test accuracy is ensured.

The utility model also provides an electronic locking safety belt locking test method, which is carried out by using the electronic locking safety belt test tool, and is shown by reference 3, and specifically comprises the following steps:

s1, acquiring a real vehicle installation angle of a safety belt retractor; the control module acquires a preset locking threshold value;

s2, fixing the retractor fixing device 1 on a mounting plate of a test bed, and fixing the signal acquisition device on the bottom plate 12 or the mounting plate; the angle of the retractor fixing plate 11 is adjusted to make the installation angle of the retractor fixing plate 11 consistent with the real vehicle installation angle of the safety belt retractor, and the retractor fixing plate 11 is locked at the angle; installing a safety belt to be tested, and fixing the safety belt retractor to the retractor fixing device 1;

s3, the motion mechanism of the test bed drives the mounting plate to move, and the signal acquisition device acquires motion data of the retractor and sends the motion data to the control module;

s4, the control module compares the motion data of the retractor with a corresponding preset locking threshold value, and when the motion data of the retractor is larger than or equal to the preset locking threshold value, the control module outputs a locking signal to the safety belt electronic locking unit to drive the safety belt electronic locking unit to perform locking action so as to lock the safety belt; at this time, the mounting plate is stopped, and the test bed records the movement data when the mounting plate is stopped;

and S5, evaluating the locking performance of the electronic locking safety belt.

The real vehicle installation angle and the locking parameter of the safety belt retractor can be obtained according to the design drawing of the safety belt; according to the locking parameters of the safety belt, the control module can preset corresponding preset locking thresholds, and according to different vehicle types and different test types, different preset locking thresholds can be set in the control module.

Firstly, fixing the retractor fixing device 1 on a mounting flat plate of a test bed, fixing the signal acquisition device on a bottom plate 12 or the mounting flat plate, and then according to the obtained real vehicle mounting angle of the safety belt retractor, the angle of the retractor fixing plate 11 is adjusted so that the installation angle of the retractor fixing plate 11 coincides with the real vehicle installation angle of the seatbelt retractor, and the retractor fixing plate 11 is locked at this angle. Then the safety belt to be tested is installed, the safety belt retractor is fixed on the retractor fixing device 1, and the angle of the retractor fixing plate 11 can be adjusted after the safety belt to be tested is installed. After the test preparation work is completed, the test can be started, and corresponding locking tests can be carried out according to the TL471 public automobile safety belt standard and the GB 14166-2013 safety belt for motor vehicle passengers, a restraint system, a child restraint system and an ISOFIX child restraint system. In the test process, the safety belt retractor fixing device 1 accommodates and fixes the safety belt retractor in the safety belt retractor fixing device, the safety belt retractor fixing device has stable structure, the upper part of the retractor fixing plate 11 is provided with a notch 111, can avoid the safety belt webbing, has small friction influence on the webbing, avoid the meshbelt to interfere, reduce frictional force, guarantee that the meshbelt is pulled out and is retrieved smoothly, effectively reduce auxiliary device to meshbelt displacement, acceleration and the influence of retractor locking angle, can effectively improve the experimental accuracy of safety belt.

In the acceleration lock test, the retractor fixing apparatus 1 is fixed to a mounting plate of an acceleration lock test stand, which may be an LU-300/24S acceleration lock test stand of ATOS (atous). The signal acquisition device comprises a tool acceleration sensor, the tool acceleration sensor is fixed on the bottom plate 12 or the mounting flat plate, and when the movement mechanism of the test bed drives the mounting flat plate to move, the tool acceleration sensor can acquire the acceleration A of the movement of the retractor and send the acceleration A to the control module. The signal acquisition device can also comprise a tool displacement sensor for acquiring the displacement S of the motion of the retractor. At this time, as shown in reference 4, the preset lock threshold is a retractor acceleration lock threshold A0. The control module compares the acceleration A acquired by the tool acceleration sensor with an acceleration locking threshold A0, and when A is more than or equal to A0, the control module outputs a locking signal to the safety belt electronic locking unit to drive the safety belt electronic locking unit to perform locking operation so as to lock the safety belt. After the safety belt is locked, the mounting flat plate is prevented from moving continuously, the mounting flat plate is stopped, the displacement S 'at the moment is recorded by the test bed displacement sensor, the displacement S' acquired by the test bed displacement sensor is compared with a displacement standard value S0, and when S is less than or equal to S0, the safety belt is judged to be qualified. If the seat belt is normally locked, but the displacement S' exceeds the displacement standard value S0, the seat belt is judged to be unqualified.

In the vehicle feel lock test, the acceleration lock threshold value A0 is one of 0.45g or more, for example, 0.45g, 0.46g, 0.47g, 0.48g, 0.49g, 0.50g, or the like, and may be set according to the seatbelt actual vehicle lock parameter. For example, when the acceleration threshold value A0 is 0.48g and the displacement standard value S0 is 50mm, and the acceleration A acquired by the tool acceleration sensor is more than or equal to 0.48g, the control module outputs a locking signal to the safety belt electronic locking unit to drive the safety belt electronic locking unit to perform locking action, so that the safety belt is locked. At this time, if the displacement S 'acquired by the test bed displacement sensor is within 50mm, for example, if S' is 42mm, the seat belt acceleration locking performance is acceptable. Preferably, the acceleration lock-up threshold value A0 is one of greater than or equal to 0.4g, for example, A0 is 0.40g, 0.41g, 0.42g, 0.43g, or the like. For example, when A0 is 0.42g, when the acceleration A acquired by the tool acceleration sensor is more than or equal to 0.42g, the control module outputs a locking signal to the safety belt electronic locking unit to drive the safety belt electronic locking unit to perform locking action so as to lock the safety belt, and when A is more than or equal to 0.45g, the safety belt is also locked. When the belt sensing locking test is carried out, the acceleration locking threshold A0 is one of 1.5g-2.0g, and A0 is more than 1.5g and less than or equal to 2.0g.

After the safety belt is locked, the motion mechanism of the test bed drives the mounting flat plate to reset, at the moment, the acceleration A is smaller than the acceleration locking threshold A0, the control module outputs an unlocking signal to the safety belt electronic locking unit, and the safety belt electronic locking unit is driven to execute unlocking action, so that the safety belt is unlocked. The safety belt is unlocked, and the next locking test can be continued after the installation flat plate is reset until the test is finished.

When the angle-sensitive locking test is performed, the retractor fixing device 1 is fixed on a mounting plate of a turnover test stand, which can be an RT-24SE/AVZ turnover test stand of ATOS. The signal acquisition device comprises a tool angle sensor, the tool angle sensor is fixed on the bottom plate 12 or the mounting flat plate, and when the movement mechanism of the test bed drives the mounting flat plate to turn over, the tool angle sensor can acquire the turning angle B of the retractor and send the turning angle B to the control module. At this time, as shown in reference to fig. 5, the preset locking threshold is a retractor flip angle locking threshold B0. The control module compares the overturning angle B acquired by the tool angle sensor with an overturning angle locking threshold value B0, and when B is more than or equal to B0, the control module outputs a locking signal to the safety belt electronic locking unit to drive the safety belt electronic locking unit to execute locking action so as to lock the safety belt. After the safety belt is locked, the installation flat plate is prevented from continuing to overturn, the installation flat plate is stopped, the overturning angle B ' at the moment is recorded by the test bed angle sensor, the overturning angle B ' acquired by the test bed angle sensor is compared with overturning angle standard values B1 and B2 (B1 is smaller than B2), and when B1 is smaller than or equal to B ' and smaller than or equal to B2, the safety belt is judged to be qualified. After the safety belt is locked, the motion mechanism of the test bed drives the mounting flat plate to reset, at the moment, the overturning angle B is smaller than the overturning angle locking threshold B0, and the control module outputs an unlocking signal to the safety belt electronic locking unit to drive the safety belt electronic locking unit to execute unlocking action so as to unlock the safety belt.

The flip angle lock threshold B0 is one of 15 ° -27 °, for example, B0 is 15 °, 16 °,18 °, 20 °, 22 °, 24 °, 25 °, 27 °, and the like. For example, when the turnover angle locking threshold B0 is 20 °, the turnover angle standard value B1 is 15 °, and the turnover angle standard value B2 is 27 °, and when the turnover angle B acquired by the tool angle sensor is greater than or equal to 20 °, the control module outputs a locking signal to the safety belt electronic locking unit, so as to drive the safety belt electronic locking unit to perform locking and locking, so that the safety belt is locked. At this time, the test bed angle sensor acquires the turning angle B ', and the seat belt angle-sensitive locking performance is acceptable when the turning angle B ' is 15 ° or less and B ' or less than 27 °, for example, 20.5 °. Preferably, the flip angle locking threshold B0 is one of 18-25, such as B0 of 18, 20, 22, 24, 25, etc.

The control module can be electrically connected with the data storage system of the test bed, and transmits the motion data of the retractor acquired by the tool signal acquisition device and the state of the safety belt retractor to the data storage system of the test bed and compares the motion data with the corresponding motion data acquired by the test bed signal acquisition device, and when the error is within +/-5% of the corresponding motion data acquired by the test bed signal acquisition device, the motion data of the retractor acquired by the tool signal acquisition device is judged to be accurate. For example, the acceleration a collected by the tool acceleration sensor is compared with the acceleration a ' collected by the test bed acceleration sensor, the displacement S collected by the tool displacement sensor is compared with the displacement S ' collected by the test bed displacement sensor, and the turning angle B collected by the tool angle sensor is compared with the turning angle B ' collected by the test bed angle sensor. When the safety belt is pulled every time, the two groups of data are subjected to interactive comparison, so that the signal acquisition device of the tool can be checked, and whether the motion data of the retractor acquired by the signal acquisition device of the tool are correct or not is determined. In addition, the electric connection of the safety belt electronic locking system can be confirmed in a closed loop, so that the control module is ensured to be communicated with the coil of the safety belt electronic locking unit, and the resistance is qualified. The communication can be ensured in each test cycle, and the equipment misjudgment caused by the situation of non-communication is avoided.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. The universal safety belt retractor fixing device is characterized by comprising a base, retractor fixing plates (11) and an angle adjusting mechanism, wherein the base comprises a bottom plate (12) and supporting plates (13) arranged on two opposite sides of the bottom plate (12), the retractor fixing plates (11) are connected between the two supporting plates (13) through rotating shafts (14), and the retractor fixing plates (11) can rotate around the straight line where the axes of the rotating shafts (14) are located; an angle indicating disc (15) is arranged on at least one supporting plate (13), and the center of the angle indicating disc (15) is positioned on the straight line of the axis of the rotating shaft (14); a pointer (16) pointing to the scale of the angle indicating disc (15) is fixedly arranged on one side of the retractor fixing plate (11) corresponding to the angle indicating disc (15); a notch (111) for avoiding a seat belt webbing is formed in the upper portion of the retractor fixing plate (11), and a first through hole (112) for fixing the retractor is formed below the notch (111); the angle adjusting mechanism is connected to the supporting plate (13) and is used for adjusting the included angle between the retractor fixing plate (11) and the vertical surface.

2. The universal seatbelt retractor fixing apparatus according to claim 1, wherein the angle adjusting mechanism is a driving motor and a driving shaft, one end of the driving shaft is connected with an output shaft of the driving motor, and the other end of the driving shaft passes through a supporting plate (13) and is fixed to the retractor fixing plate (11); the drive shaft is collinear with the axis of the rotary shaft (14).

3. The universal seatbelt retractor fixing device according to claim 2, wherein the driving shaft is sleeved outside the rotating shaft (14); alternatively, the drive shaft is the rotation shaft (14).

4. The universal safety belt retractor fixing device according to claim 1, wherein the angle adjusting mechanism is a clamping bolt (17) and a first guide hole (131), the first guide hole (131) is an arc through hole arranged on one supporting plate (13), and the center of the first guide hole (131) is located on a straight line where the axis of the rotating shaft (14) is located; one side of the retractor fixing plate (11) corresponding to the first guide hole (131) is provided with a first threaded hole matched with a clamping bolt (17), and the clamping bolt (17) can penetrate through the first guide hole (131) and be screwed into the first threaded hole.

5. The universal safety belt retractor fixing device according to claim 4, wherein the angle adjusting mechanism further comprises a threaded handle (18), a second guide hole (132) is arranged on the support plate (13) opposite to the support plate (13) provided with the first threaded hole, the second guide hole (132) is an arc through hole, and the center of the second guide hole (132) is located on a straight line where the axis of the rotating shaft (14) is located; one side of the retractor fixing plate (11) corresponding to the second guide hole (132) is provided with a second threaded hole (113) matched with the threaded handle (18), the rod part of the threaded handle (18) can penetrate through the second guide hole (132) and be screwed into the second threaded hole (113), the rod part of the threaded handle (18) is in clearance fit with the second guide hole (132), and the head part of the threaded handle (18) is abutted to the supporting plate (13).

6. The universal seatbelt retractor fixing device according to claim 5, wherein the first guide hole (131) is identical to the second guide hole (132), and the first screw hole is identical to the second screw hole (113).

7. The universal seatbelt retractor fixing device according to claim 1, wherein a lower portion of the notch (111) is wider than a positioning pin of the retractor.

8. The universal seatbelt retractor fixing device according to claim 6, wherein the scale of the angle indicating disc (15) ranges from 0 to 180 °, and the first and second guide holes (131, 132) are semicircular.

9. The universal seatbelt retractor fixing device according to claim 1, wherein a spacer (19) is provided between the pointer (16) and the retractor fixing plate (11).

10. The universal seatbelt retractor fixing device according to claim 1, wherein a top of the supporting plate (13) is semicircular, the retractor fixing plate (11) is T-shaped, and an upper portion of the retractor fixing plate (11) is located above the supporting plate (13).