CN214621731U

CN214621731U - Detection apparatus for utilize double pendulum mechanism to carry out gasbag shock-absorbing capacity measurement

Info

Publication number: CN214621731U
Application number: CN202120737005.8U
Authority: CN
Inventors: 张阳
Original assignee: Nanjing Protech Safety Systems Co ltd
Current assignee: Nanjing Protech Safety Systems Co ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-11-05
Anticipated expiration: 2031-04-12

Abstract

The utility model discloses an utilize double pendulum mechanism to carry out gasbag shock-absorbing capacity measuring detection device, the top of stand is provided with cable wire mechanism, one side of stand is provided with the mount table, the mount table is used for placing test spare part. A double swing arm is arranged between the upright post and the mounting table, a swing arm release device is arranged on a lower swing arm of the double swing arm, and the lower swing arm is fixedly connected with an impact block; the swing arm release device is connected with the steel cable mechanism. The double-swing-arm mechanism comprises: the upper swing arm is connected to one side of the swing arm releasing device, and the lower swing arm is hinged to one end of the upper swing arm. The utility model discloses a double swing arm mechanism uses the pin joint to rotate for last swing arm once more for the pivot under rotating the in-process, and then realizes the impact change of two degrees of freedom of swing arm and lower swing arm, and then makes the stress state of the complete simulation passenger head of swing arm energy-absorbing mechanism and chest, increases impact test's emulation nature.

Description

Detection apparatus for utilize double pendulum mechanism to carry out gasbag shock-absorbing capacity measurement

Technical Field

The utility model belongs to the technical field of automobile safety spare part development, especially, relate to protection passenger's head gasbag carries out the equipment device that the impact property is experimental.

Background

Simulation is an extremely important method in vehicle safety development, and in order to improve simulation accuracy as much as possible, it is necessary to study the strength and energy absorption effect of parts such as an airbag that affect damage to a passenger, and apply the parts to simulation. The main means for studying the performance of the above parts is through impact test. The single swing arm impact test can also complete the study of the rigidity of the air bag, but the single swing arm impact only has one degree of freedom, and can not accurately simulate the state that the head and the chest of a passenger are both restrained, and the double swing arm system can completely simulate the state that the head and the chest of the passenger are both restrained.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model provides a double swing arm strikes impact test, the utility model discloses a following technical scheme solves above-mentioned problem.

The technical scheme is as follows: a detection device for measuring the buffering performance of an air bag by using a double-pendulum mechanism comprises:

the steel cable mechanism is arranged at the top end of the upright post;

the installation platform is positioned on one side of the upright post, and one side of the installation platform is provided with an impact force detection device;

double swing arm mechanism sets up between stand and mount table, double swing arm mechanism includes: the device comprises a swing arm release device arranged at the transmission end of a steel cable mechanism, an upper swing arm connected to one side of the swing arm release device, a lower swing arm hinged to one end of the upper swing arm, and a one-way limiting mechanism arranged at the hinged position of the upper swing arm and the lower swing arm; the upper swing arm and the lower swing arm are ensured to be positioned on the same straight line and pulled up together, and meanwhile, the rotation direction of the lower swing arm is limited.

The bottom end of the lower swing arm is fixedly provided with an impact block; and a stress surface matched with the impact block is arranged on one side of the impact force detection device.

In a further embodiment, the wire rope mechanism comprises: the motor is installed on the top end of the stand column, the support is fixed on the top end of the stand column and inclines downwards, the pulley is installed at the tail end of the support, one end of the steel cable is connected with an output shaft of the motor, the other end of the steel cable is wound around the pulley and the swing arm releasing device is connected with the steel cable.

In a further embodiment, the swing arm release device comprises: the lower swing arm is fixed on the lower end of the lower swing arm, and the lower end of the lower swing arm is fixed on the lower swing arm.

In a further embodiment, the upper end part and the lower end part are magnetically movably connected; the top surface of the lower end part is abutted with the bottom surface of the upper end part, and the upper end part is made of an iron material; the lower end part is made of an electromagnetic material; the cross sections of the upper end part and the lower end part are U-shaped, and when the upper swing arm is hoisted, the lower end part sends out magnetic force for connection; when the upper swing arm needs to fall down, the lower end part stops releasing the magnetic force, the swing arm releasing devices are naturally separated, the upper swing arm drives the lower swing arm to rotate downwards at the same time, and the lower swing arm rotates relative to the upper swing arm again by taking a hinge point as a base point in the rotating process, so that the impact change of two degrees of freedom of the upper swing arm and the lower swing arm is realized.

In a further embodiment, the one-way limiting mechanism is a limiting block fixedly arranged on the opposite side of the upper swing arm in rotation.

In a further embodiment, the bottom of the lower swing arm is provided with a fixed seat.

In a further embodiment, a counterweight adjustment mechanism is disposed on one side of the upper swing arm, the counterweight adjustment mechanism including: the pole of placing of grafting on last swing arm to and cup joint the balancing weight on placing the pole, the quantity of balancing weight is 1 at least, thereby can change the inertia of the quantity adjustment impact piece of configuration piece in experimental.

In a further embodiment, a swing arm energy absorption mechanism is arranged between the mounting table and the upright column, the upper swing arm turns to be opposite to the swing arm energy absorption mechanism, and the swing arm energy absorption mechanism is formed by combining a plurality of groups of elastic elements.

Has the advantages that: the utility model discloses a double swing arm mechanism uses the pin joint to rotate for last swing arm once more for the pivot under rotating the in-process, and then realizes the impact change of two degrees of freedom of swing arm and lower swing arm, and then makes the stress state of the complete simulation passenger head of swing arm energy-absorbing mechanism and chest, increases impact test's emulation nature.

Drawings

Fig. 1 is a schematic structural diagram of the double pendulum mechanism of the present invention.

Fig. 2 is a diagram of an embodiment of the double pendulum mechanism of the present invention.

Fig. 3 is a diagram of an embodiment of the swing arm releasing device of the present invention.

The reference signs are: the device comprises an upright post 1, a motor 2, a steel cable 3, a pulley 4, an upper swing arm 5, a balance weight adjusting mechanism 5-1, a limiting block 5-2, a swing arm releasing device 6, an upper end 6-1, a lower end 6-2, a lower swing arm 7, an impact block 8, a swing arm energy absorption mechanism 9, an impact force detection device 10 and a mounting table 11.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

Simulation is an extremely important method in vehicle safety development, and in order to improve simulation accuracy as much as possible, it is necessary to study the strength and energy absorption effect of parts such as an airbag that affect damage to a passenger, and apply the parts to simulation. The main means for studying the performance of the above parts is through impact test. The single swing arm impact test can also complete the research on the rigidity of the air bag, and the applicant finds that the single swing arm impact only has one degree of freedom and cannot accurately simulate the state that the head and the chest of a passenger are both restrained, while the double swing arm system can completely simulate the state that the head and the chest of the passenger are both restrained.

As shown in fig. 1 to 2, the detection device for measuring the buffering performance of the airbag by using the double pendulum mechanism comprises: the device comprises an upright post 1, a motor 2, a steel cable 3, a pulley 4, an upper swing arm 5, a balance weight adjusting mechanism 5-1, a limiting block 5-2, a swing arm releasing device 6, an upper end 6-1, a lower end 6-2, a lower swing arm 7, an impact block 8, a swing arm energy absorption mechanism 9, an impact force detection device 10 and a mounting table 11.

The top end of the upright post 1 is provided with a steel cable 3 mechanism, one side of the upright post 1 is provided with an installation table 11, and the installation table 11 is used for placing test parts. A double-swing arm is arranged between the upright post 1 and the mounting table 11, a swing arm releasing device 6 is arranged on a lower swing arm 7 of the double-swing arm, and the lower swing arm 7 is fixedly connected with an impact block 8; the swing arm release device 6 is connected with the steel cable 3 mechanism. The double-swing-arm mechanism comprises: the device comprises an upper swing arm 5 connected to one side of a swing arm release device 6, a lower swing arm 7 hinged to one end of the upper swing arm 5, and a one-way limiting mechanism arranged at the hinged position of the upper swing arm 5 and the lower swing arm 7; the rotation direction of the lower swing arm 7 is limited while the upper swing arm 5 and the lower swing arm 7 are pulled up together on the same straight line. Meanwhile, the top of the upper swing arm 5 is inserted with a pin shaft, and the pin shaft is rotatably fixed on a mounting frame or a wall surface on one side for position fixing.

The bottom end of the lower swing arm 7 is fixedly provided with an impact block 8; and a stress surface matched with the impact block 8 is arranged on one side of the impact detection device 10.

The wire 3 mechanism comprises: motor 2, support, pulley 4 and cable 3. The motor 2 is fixed at the top end of the upright post 1, and the bracket is fixed at the top end of the upright post 1 and inclines downwards; the pulley 4 is installed at the tail end of the support, one end of the steel cable 3 is connected with an output shaft of the motor 2, and the other end of the steel cable 3 is connected with the swing arm releasing device 6 by bypassing the pulley 4. The steel cable 3 is guided by a pulley 4 fixed on the bracket above the upright post 1, so that the steel cable 3 keeps a distance from other structures on the upright post 1 to avoid interference. One end of the steel cable 3 is connected with the motor 2, and the other end is connected with the swing arm release device 6. After the motor 2 is started, the swing arm is lifted to a specific position through the steel cable 3.

The single swing arm dashes only one degree of freedom in current design impact test, and the state that passenger's head and chest all received the restraint can't be accurately simulated, consequently the utility model provides a double swing arm mechanism carries out through swing arm release 6

The swing arm releasing device 6 includes: an upper end part 6-1 connected with the tail end of the steel cable 3 and a lower end part 6-2 fixed on the lower swing arm 7.

Further, the upper end part 6-1 is magnetically movably connected with the lower end part 6-2; the top surface of the lower end part 6-2 is abutted against the bottom surface of the upper end part 6-1, and the upper end part 6-1 is made of an iron material; the lower end part 6-2 is made of an electromagnetic material; the cross sections of the upper end part 6-1 and the lower end part 6-2 are U-shaped, and when the upper swing arm 5 is lifted, the lower end part 6-2 is connected by magnetic force; when the upper swing arm 5 needs to fall down, the lower end part 6-2 stops releasing the magnetic force, so that the swing arm releasing device 6 is naturally separated, the upper swing arm 5 drives the lower swing arm 7 to simultaneously rotate downwards, and the lower swing arm 7 rotates relative to the upper swing arm 5 again by taking a hinge point as a base point in the rotating process, so that the impact change of two degrees of freedom of the upper swing arm 5 and the lower swing arm 7 is realized.

The one-way limiting mechanism is a limiting block 5-2 fixedly arranged on the opposite side of the rotation of the upper swing arm 5, so that the rotation direction of the lower swing arm 7 is limited while the upper swing arm 5 and the lower swing arm 7 are pulled up together on the same straight line.

The bottom of lower swing arm 7 is provided with the fixing base, the fixing base joint at the tip of lower swing arm 7 and with impact block 8 is perpendicular, connects impact block 8 through the fixing base and increases the area of exerting oneself to impulsive force detection device 10.

One side of the upper swing arm 5 is provided with a counterweight adjusting mechanism 5-1, and the counterweight adjusting mechanism 5-1 comprises: the pole of placing of grafting on last swing arm 5 to and cup joint the balancing weight on placing the pole, the quantity of balancing weight is 1 at least, thereby can change the inertia of the quantity adjustment impact piece 8 of configuration piece in experimental.

Be provided with swing arm energy-absorbing mechanism 9 between mount table 11 and the stand 1, it is relative with swing arm energy-absorbing mechanism 9 to go up swing arm 5 and turn to, swing arm energy-absorbing mechanism 9 is formed by the elastic element combination of a plurality of groups, the utility model provides an elastic element's material can adopt different forms such as spring or honeycomb aluminium, simulates the atress condition of passenger's chest atress state and head.

The working principle is as follows:

the motor 2 is started, the upper swing arm 5, the lower swing arm 7 and the impact block 8 are pulled to a set position by electric power through the traction steel cable 3, the lower end part 6-2 of the swing arm release device 6 is started to enable the lower end part 6-2 to have strong magnetic force to be connected with the upper end part 6-1 of the swing arm release device 6, the swing arm release device 6 is in a connection state, the magnetic force function of the lower part of the swing arm release device 6 is closed, the swing arm release device 6 is naturally separated, and the upper swing arm 5 drives the lower swing arm 7 and the impact block 8 to start rotating; when the upper swing arm 5 is hoisted in the rotating process, the lower end part 6-2 is connected by magnetic force; when the upper swing arm 5 needs to fall down, the lower end part 6-2 stops releasing magnetic force, so that the swing arm releasing device 6 is naturally separated, the upper swing arm 5 drives the lower swing arm 7 to simultaneously rotate downwards, the lower swing arm 7 rotates relative to the upper swing arm 5 again by taking a hinge point as a base point in the rotating process, impact change of two degrees of freedom of the upper swing arm 5 and the lower swing arm 7 is further realized, impact test of acting force is carried out on the swing arm energy absorption mechanism 9 and the impact detection device on one side, and then the stress state of the chest and the stress condition of the head of a passenger are recorded and simulated.

The utility model discloses a double swing arm mechanism rotates in-process lower swing arm 7 and uses the pin joint to rotate for last swing arm 5 once more for the basic point, and then realizes the impact change of two degrees of freedom of swing arm 5 and lower swing arm 7, and then makes the stress state of the complete simulation passenger head of swing arm energy-absorbing mechanism 9 and chest, increases impact test's emulation nature.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be modified to perform various equivalent transformations, which all belong to the protection scope of the present invention.

Claims

1. A detection device for measuring the buffering performance of an air bag by using a double-pendulum mechanism is characterized by comprising:

the steel cable mechanism is arranged at the top end of the upright post;

double swing arm mechanism sets up between stand and mount table, double swing arm mechanism includes: the device comprises a swing arm release device arranged at the transmission end of a steel cable mechanism, an upper swing arm connected to one side of the swing arm release device, a lower swing arm hinged to one end of the upper swing arm, and a one-way limiting mechanism arranged at the hinged position of the upper swing arm and the lower swing arm;

2. A test device for air bag cushioning performance measurement using a double pendulum mechanism as claimed in claim 1, wherein said wire rope mechanism comprises: the motor is installed on the top end of the stand column, the support is fixed on the top end of the stand column and inclines downwards, the pulley is installed at the tail end of the support, one end of the steel cable is connected with an output shaft of the motor, the other end of the steel cable is wound around the pulley and the swing arm releasing device is connected with the steel cable.

3. A detecting device for measuring the cushion performance of an air bag using a double pendulum mechanism according to claim 1, wherein the pendulum arm releasing means comprises: the lower swing arm is fixed on the lower end of the lower swing arm, and the lower end of the lower swing arm is fixed on the lower swing arm.

4. The detecting device for measuring the buffering performance of the air bag by using the double-pendulum mechanism as claimed in claim 3, wherein the upper end portion and the lower end portion are magnetically movably connected; the top surface of the lower end part is abutted with the bottom surface of the upper end part, and the upper end part is made of an iron material; the lower end part is made of an electromagnetic material; the cross sections of the upper end part and the lower end part are both U-shaped.

5. The detecting device for measuring the buffering performance of an air bag by using a double-pendulum mechanism as claimed in claim 1, wherein the one-way limiting mechanism is a limiting block fixedly arranged on the opposite side of the rotation of the upper pendulum arm.

6. The detection device for measuring the buffering performance of the air bag by using the double-pendulum mechanism as claimed in claim 1, wherein a fixed seat is arranged at the bottom of the lower swing arm.

7. The detecting device for measuring the buffering performance of the air bag by using the double-pendulum mechanism as claimed in claim 1, wherein a counterweight adjusting mechanism is disposed on one side of the upper pendulum arm, and the counterweight adjusting mechanism comprises: the pole of placing of grafting on last swing arm to and cup joint the balancing weight on placing the pole, the quantity of balancing weight is 1 at least.

8. The detecting device for measuring the buffering performance of the airbag by using the double-pendulum mechanism as claimed in claim 1, wherein a pendulum arm energy absorbing mechanism is arranged between the mounting table and the upright post, the upper pendulum arm turns to be opposite to the pendulum arm energy absorbing mechanism, and the pendulum arm energy absorbing mechanism is formed by combining a plurality of groups of elastic elements.