CN114354213A

CN114354213A - Method for verifying operation comfort of gear shifting handle

Info

Publication number: CN114354213A
Application number: CN202111628451.6A
Authority: CN
Inventors: 张宗全; 张金红; 牟文俊
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-04-15

Abstract

The invention provides a shift handle operation comfort verification method, which is characterized in that a shift handle operation comfort range 3D data module manufactured based on a software tool is used, a designer only needs to replace a human body in a shift handle comfort zone 3D module with a required human body position, and the comfort of the arrangement position of a shift handle can be quickly verified. The defects of other methods are made up, the early-stage risk identification and judgment capability of the design of the gear shifting handle is improved, and the period and the cost investment of product development and verification are reduced.

Description

Method for verifying operation comfort of gear shifting handle

Technical Field

The invention belongs to the technical field of automobile part testing and verification, and particularly relates to the field of verification of comfort in gear shifting operation of a passenger vehicle.

Background

When a vehicle is driven, the shift handle is an important part with very high operation frequency of a driver, and the design position of the shift handle of the vehicle is unreasonable, so that the operation comfort of the driver is poor, the complaint of the driver is caused, and the driving safety is seriously and even possibly influenced.

In the current automobile design, most automobile enterprises verify whether the design position of the gear shift handle meets the comfort, and the main method is to process a sample piece of the gear shift handle by using the layout data, carry out physical verification on the design sample automobile and further determine the rationality of the design position of the gear shift handle. The method can obtain the evaluation result intuitively, but the verification period is long, the cost is high, and if the result of one-time verification does not meet the comfort requirement, the sample piece needs to be manufactured repeatedly for verification.

Meanwhile, the design of the traditional central control model of the automobile is novel and changeable, for example, the automobile models in the previous years are low central control consoles, and the automobile models in the new era are mostly high central control consoles, so that the position change of the gear shift handle is large, and the past experience and specification are not enough to guide the position design of the gear shift handle.

Based on the above background, a method for guiding the design and verification of the arrangement position of the shift lever quickly and accurately is needed.

Disclosure of Invention

The invention aims to provide a method for quickly and accurately guiding the design and verification of the arrangement position of a gear shifting handle, and the gear shifting handle position which can meet the operation comfort and the modeling intention is found in the design stage, so that the risk is avoided in advance, the cost is saved, and the development period is shortened.

The purpose of the invention is realized by the following technical scheme:

a method for verifying the comfort of a shifter handle, comprising the steps of:

step 1, manufacturing a 3D data module of a comfortable operating range of a gear shifting handle:

and manufacturing a 3D data module of the comfortable moving range of the palm grasping point according to the sizes and the comfortable angle ranges of all joints of the automobile standard dummy and the backrest angle of the sitting posture of a driver.

And 2, placing the 3D data module of the comfortable operating range of the gear shifting handle and the data of the gear shifting handle in the same assembly environment of CATIA for verification and judgment.

And 3, when the gear shifting handle is positioned in the area required by the operation comfort module, the position of the gear shifting handle meets the requirement of the operation comfort, otherwise, the gear shifting handle is not positioned in the area required by the operation comfort module, and the position of the gear shifting handle does not meet the requirement of the operation comfort.

And 4, correcting and adjusting the data of the gear shifting handle which does not meet the requirement of operation comfort, so that the gear shifting handle is positioned in the operation comfort module.

Further, in step 1, the 3D data module is a collection composed of modules A, B, C.

The module A is as follows: the method is characterized in that a 3D model is generated by making the moving range of a palm grasping point according to the lengths of the upper arm, the forearm and the palm grasping point of a percentile male human body of a selected automobile standard dummy and the comfortable angle ranges of the shoulder point and the elbow.

The module B is as follows: on the basis of the module A, a 3D model is produced according to the forward extending comfortable angle of the shoulder point, namely that the backrest is fixed and only the right shoulder is forwards inclined, and the moving range of the palm grasping point is produced.

The module C is as follows: on the basis of the module B, a 3D model generated by the moving range of a palm grasping point is manufactured according to the forward stretching comfortable angle of the backrest, namely the included angle between the backrest and the trunk of the thigh changes.

Furthermore, in the step 1, a manufacturing module D is added, wherein the module D is to increase the position limitation of the shift handle relative to the human body in the height direction.

According to the method for verifying the operating comfort of the gear shifting handle, the 3D data module of the comfortable range of the gear shifting handle is manufactured based on a software tool (such as CATIA software), a designer can quickly verify the comfort of the arrangement position of the gear shifting handle by only replacing a human body in the 3D module of the comfortable region of the gear shifting handle with a required human body position, the method is different from a traditional real object sample vehicle verification method, the accuracy of an analysis result is improved, and a risk judgment standard is clearer. The defects of other methods are made up, the early-stage risk identification and judgment capability of the design of the gear shifting handle is improved, and the period and the cost investment of product development and verification are reduced.

Drawings

FIG. 1 is a 3D model picture of Module A;

FIG. 2 is a 3D model picture of module B;

FIG. 3 is a 3D model picture of module C;

FIG. 4 is a picture of a palm grip comfortable active range 3D data module for a set of three modules;

fig. 5 is a picture of a 3D data module with the palm grip point comfort active range of module D added.

Detailed Description

The invention will be explained below on the basis of a passenger car in a certain model with reference to the accompanying drawings.

Step 1, extracting the designed human body and position data of a certain passenger car, and manufacturing a 3D data module of the comfortable range of the operation of a gear shifting handle by CATIA software.

The preparation method comprises the following steps: and manufacturing a three-dimensional module with a comfortable activity range of a palm gripping point according to the size and angle comfortable range of each joint of the SAEJ898 human body and the backrest angle 25 degrees of the sitting posture of a car driver.

As shown in fig. 1, module a: according to the lengths of the upper arm, the forearm and the palm grasping point of the SAE95 percentile male human body and the comfortable angle ranges of the shoulder point and the elbow, the moving range of the palm grasping point is made and a 3D model is generated.

As shown in fig. 2, module B: on the basis of A, according to the shoulder point forward stretching comfort angle, namely that the backrest is not moved, only the right shoulder is forward tilted, the moving range of the palm grasping point is manufactured, and a 3D model is generated.

As shown in fig. 3, module C: on the basis of the module B, according to the forward stretching comfortable angle of the backrest, namely the included angle between the backrest and the trunk of the thigh changes, the moving range of the palm grasping point is manufactured and the 3D model is generated.

As shown in FIG. 4, the collection of modules A, B, C above is a shift handle operating comfort range 3D data module.

Because the module is manufactured according to the size and the comfortable angle of the human joint, the gear shifting handle is in the range of the module, and the module has the human-machine operation comfort. When the module is used, the man-machine R point of the module is superposed with the R point of the checked item, so that a comfortable gear shifting handle position range can be obtained or whether the arranged handle position is comfortable to operate or not can be verified.

And 3, if the gear shifting handle is in the area required by the operation comfort module, the position of the gear shifting handle meets the requirement of the operation comfort, otherwise, if the gear shifting handle is not in the area required by the operation comfort module, the position of the gear shifting handle does not meet the requirement of the operation comfort.

Therefore, the design and operation comfort of the vehicle type gear shifting handle is verified, the design correction is guided, and the design risk is avoided in advance.

In a further embodiment, in order to guide the design itself more effectively, the comfort of the gearshift lever positions can be further reduced, i.e. the production of the module D is increased, as follows:

depending on the type of passenger car of the company and the usual position of the shift lever, combined with experience or specific requirements, the position limitation of the shift lever in the height direction relative to the body can be increased on the basis of the above set of modules: for example, in the height direction, the experience of a certain company is that the height difference range between the handle operating point and the R point is 80 mm-260 mm. Thus, the module D is shown in fig. 5.

In a further embodiment, a specific method correction may be performed according to the vehicle type category in order to guide the design more effectively. For example, the experience of a company is:

when the car is used, the car is mostly in a lower lying sitting position, and the backrest angle can be considered according to 25 degrees, namely the module is directly used for determining or checking the position of the gear shifting handle.

SUV cars are most often in a more upright sitting position when in use, and the back angle can be considered at 24 or even 23, thus correcting for the transverse straight forward rotation of the above modules by 1 or 2 around the R point.

In a further embodiment, the shift handle operation comfort range 3D data module can be used to specifically determine the level and degree of the shift handle actual operation comfort, for example, the driver can directly operate the shift handle without moving the shoulder joint, or the driver can operate the shift handle by slightly tilting the shoulder joint forward, or the driver can operate the shift handle and the upper torso by simultaneously tilting the shoulder joint forward. Then a reasonable position can be made in the design stage by combining with modeling originality and the like.

In a further embodiment, the 3D data module of the shift lever operation comfort range may also be applied to the design and inspection of the key operation comfort in areas such as the ceiling of the passenger compartment of the automobile, the center console, and the door panel, and may be optimized by considering the addition of certain specific auxiliary limiting conditions.

In addition, in the present method, the shift operation point refers to a grip center when the shift knob is operated, and is simply defined as a shift knob surface center. The shift stroke refers to the distance the shift operating point moves in the X direction during the shift handle is pushed to the forward and final positions. The shift stroke refers to a distance that the shift operation point moves in the Y direction.

Claims

1. A shift handle operating comfort verification method is characterized by comprising the following steps:

manufacturing a 3D data module of a comfortable activity range of a palm gripping point according to the sizes and the comfortable angle ranges of all joints of the SAE standard dummy and the backrest angle of the sitting posture of a driver;

step 2, the 3D data module of the comfortable operating range of the gear shifting handle and the data of the gear shifting handle are placed in the same assembly environment of CATIA for verification and judgment;

step 3, when the gear shifting handle is in the area required by the operation comfort module, the position of the gear shifting handle meets the requirement of the operation comfort, otherwise, the gear shifting handle is not in the area required by the operation comfort module, and the position of the gear shifting handle does not meet the requirement of the operation comfort;

2. The shifter handle operation comfort verification method of claim 1, wherein the 3D data module is a collection of modules A, B, C;

the module A is as follows: according to the lengths of the upper arm, forearm and palm grasping points of a percentile male human body of a selected automobile standard dummy and the comfortable angle ranges of the shoulder points and the elbows, the moving range of the palm grasping points is manufactured and a 3D model is generated;

the module B is as follows: on the basis of the module A, according to a shoulder point forward extension comfortable angle, namely that a backrest is fixed and only a right shoulder is forward inclined, a moving range of a palm gripping point is manufactured and a generated 3D model;

3. The gearshift lever operating comfort verification method of claim 1 wherein in step 3, a man-machine R point of the module is coincident with the R point of the item being checked to obtain a comfortable gearshift lever position range or to verify whether the deployed lever position is operating comfortably.

4. The gearshift handle operating comfort verification method according to claim 2, wherein in step 1, a manufacturing module D is further added, wherein the module D is to increase the position restriction of the gearshift handle in the height direction with respect to the human body.

5. Method for verifying the operating comfort of a gearshift handle according to claim 1, 2, 3 or 4, characterized in that the 3D data module is made using software tools, preferably CATIA software.

6. The shifter handle operation comfort verifying method of claim 1, 2, 3 or 4, wherein the SAE standard dummy selects a SAEJ898 human body.

7. The shifter handle operation comfort verification method according to claim 1, 2, 3 or 4, wherein the module A is selected from a SAE95 percentile male human body.

8. The gearshift handle operating comfort verification method of claim 1, 2, 3 or 4 wherein step 1 is to make a palm grip comfortable range of motion 3D data module at a 25 ° back angle of a car driver sitting position.

9. The gearshift lever operation comfort verification method of claim 1, 2, 3 or 4 wherein the gearshift stroke is a distance that the gearshift operating point moves in the X direction during the gearshift lever is pushed to the front most and rear most positions; the shift stroke refers to a distance of movement of the shift operation point in the Y direction.