TWM615201U - Sensor mounting angle inspection device - Google Patents

Abstract

This creation is related to a sensor installation angle inspection device, which is used in conjunction with at least one sheet metal part of a car body. The sheet metal part is installed with a sensor installation frame, and the installation angle inspection device includes at least one bracket rod, a reference plate, and a A laser marking device and a protractor, wherein one end of the bracket rod is attached to the sensor mounting frame, and the reference plate is attached to the other end of each of the bracket rods and is parallel to the sensor mounting frame At a distance, the laser marker is attached to the reference plate, and the protractor is also attached to the reference plate; accordingly, the installation angle of the sensor can be easily checked, which is extremely convenient in use and saves man-hours. In turn, the maintenance efficiency can be improved.

Description

Sensor installation angle inspection device

This creation is about a sensor installation angle inspection device, especially a device for inspecting the installation angle of the sensor installed on the car body, thereby improving the convenience of use, saving man-hours, and improving maintenance efficiency.

Nowadays, various sensors are usually installed on the car body, such as distance sensors (such as front radar, rear radar), blind spot detection (BSM) sensors, etc. Take the blind spot detection sensor as an example, which is generally installed on the sheet metal part on the rear side of the car body and has a specific installation angle, so that the blind spot detection sensor can detect the set angle range.

In actual conditions, the car body may deform the sheet metal due to the collision, which will change the detection angle of the sensor mounted on it, that is, the sensor cannot detect the set angle range and loses its due Because of the repetitive and cumbersome actions of the current maintenance methods, it takes hours or even days to complete a maintenance, which consumes considerable costs.

During maintenance, the maintenance personnel will knock on the deformed sheet metal to make it adjustable and return to the desired angle, but during the adjustment process, the following steps need to be repeated: knock and adjust the sheet metal, set up the inspection instrument And check the tapping and the adjusted angle of the sheet metal, tap and adjust the sheet metal again, reset the inspection instrument and check the tapped and adjusted angle of the sheet metal again, reset the inspection instrument again... Repeat this continuously until the sheet metal The piece is knocked and adjusted to the desired angle.

It can be seen from the above that the traditional inspection method for the installation angle of the sensor is too complicated, and it is not very convenient and time-consuming to use, which relatively reduces the maintenance efficiency.

In order to solve the various problems of the above-mentioned traditional sensor installation angle inspection method, this creation is to propose a sensor installation angle inspection device, which can easily check the sensor installation angle, which is extremely convenient and economical in use. Work hours, which in turn can improve maintenance efficiency.

The sensor installation angle inspection device proposed in this creation is used in conjunction with at least one sheet metal part of a car body, the sheet metal part is installed with a sensor installation frame, and the installation angle inspection device includes at least one bracket rod, a reference plate, and a Laser marking device and a protractor. Wherein, at least one bracket rod is attached to the sensor mounting frame; the reference plate is attached to the other end of the bracket rod and is spaced parallel to the sensor mounting frame by a distance; the laser marking device is Attached to the reference plate; the protractor is also attached to the reference plate.

In an implementation aspect, the protractor can be a digital angle gauge, a pointer angle gauge, or a protractor.

In an implementation aspect, a blind spot detection sensor is installed on the sensor mounting frame.

In one embodiment, there are three bracket rods, and one end of each is attached to the sensor mounting frame.

In one embodiment, the three bracket rods are respectively a stud bolt, and one end of each of them is screw-locked to the sensor mounting frame, and the reference plate is screw-locked to the sensor mounting frame. The other end of each of the three bracket rods.

In an implementation aspect, the reference plate has an outer surface relatively far away from the sheet metal member, and the laser marker and the protractor are respectively attached to the outer surface of the reference plate.

In an implementation aspect, the laser reticle and the protractor are respectively attached to the outer side surface of the reference plate by magnetic attraction.

In one embodiment, the protractor is further used to sense the absolute angle of the geographic location.

In an implementation aspect, the sensor installation angle inspection device further includes an angle template for projecting a line irradiated by the laser reticle, wherein the angle template has three different angles (θ1, θ2, θ3), the angle (θ1) and angle (θ3) lines (dashed lines) represent the upper and lower limits of the specification value, and the angle (θ2) lines (solid lines) represent the middle value of the upper and lower limits.

In one embodiment, the line (solid line) of the angle (θ2) represents the middle value of the upper limit and the lower limit, the middle value is 20 degrees, and the line (dotted line) of the angle (θ1) and angle (θ3) represents The upper limit and lower limit of the specification value are 24 degrees and 16 degrees respectively.

In one embodiment, the line (solid line) of the angle (θ2) represents the middle value between the upper limit and the lower limit, the middle value is 50 degrees, and the lines (dotted line) of the angle (θ1) and angle (θ3) represent The upper and lower limits of the specification value are 54 degrees and 46 degrees, respectively.

The sensor installation angle inspection method proposed in this creation is used in conjunction with at least one sheet metal part of a car body, the sheet metal part is installed with a sensor installation frame, and the installation angle inspection method includes the following steps: inspection before operation; marking an indication Mark the line on the ground; place an axis positioning frame on the ground and a cross bar of the axis positioning frame against the two front wheels or two rear wheels of the car body; the straight rod of the axis positioning frame perpendicular to the cross rod Draw a datum line on the indicator line; attach a datum plate to the sensor mounting frame and space the datum plate and the sensor mounting frame in parallel by a distance; attach a laser reticle and a protractor To the reference plate; place an angle template on the ground and align the reference arrow of the angle template with the reference line; check the angle of the sensor installation frame; and adjust the sheet metal part.

In an implementation aspect, in the pre-operation inspection step, it is to check whether the tire sizes of the two front wheels or/and the two rear wheels are the same, and to check the tire pressure of the two front wheels or/and the two rear wheels.

In an implementation aspect, the vehicle should be parked on a level ground during the pre-operation inspection step.

In one embodiment, the indicator line is a paper tape and is a step of sticking the paper tape on the ground. The length of the paper tape is not less than 1000 mm, and the width of the paper tape is not less than 30 mm.

In an implementation aspect, before the step of drawing the datum line on the indicator line on the straight bar perpendicular to the cross bar of the positioning frame along the axis, the following step is further included: confirming that the edge of the straight bar covers the Indicate within the range of the marking line.

In one embodiment, in the step of attaching the reference plate to the sensor mounting frame and spaced the distance between the reference plate and the sensor mounting frame in parallel, three bracket rods are used to attach the reference Plate to the sensor mounting frame.

In one embodiment, the protractor is further used to sense the absolute angle of the geographic location.

In summary, the use of the sensor installation angle inspection device proposed in this creation allows the maintenance staff of the car factory to more conveniently check the angle of the sensor installation frame in the process of adjusting the deformed sheet metal parts. Traditionally, repeatedly tapping on sheet metal parts, setting inspection instruments, inspecting, and resetting inspection instruments, etc., that is, the sensor installation angle inspection device proposed in this creation is easy to use, saves working hours, and improves maintenance. efficiency.

In conjunction with the accompanying drawings, the technical content of this creation, its advantages, and the effects that can be achieved are further explained in the way of expression of preferred specific embodiments, but its purpose is only for illustration to facilitate a better understanding, not Used to restrict.

As shown in Figures 1 to 3, in an embodiment of this creation, a sensor installation angle inspection device 2 is provided, which is used in conjunction with at least one sheet metal part 31 of a car body 3, and the sheet metal part 31 is installed There is a sensor mounting frame 11, and the mounting angle inspection device 2 at least includes: at least one bracket rod 21 attached to the sensor mounting frame 11; a reference plate 22 attached to the other end of the bracket rod 21 and There is a distance parallel to the sensor mounting frame 11; a protractor 23 is attached to the reference plate 22; and a laser marker 24 is attached to the reference plate 22; accordingly, it is convenient The inspection of the installation angle of the sensor is extremely convenient in use and can save man-hours, thereby improving maintenance efficiency. The protractor 23 can be one of a digital angle gauge, a pointer angle gauge or a protractor, but it is not limited to this.

Please refer to Figure 1, which is a schematic diagram of the use state of the preferred embodiment of the creation. In the first figure, the vehicle body 3 is shown. The vehicle body 3 has two front wheels 32 and two rear wheels 33, and at least one sheet metal part 31 is provided around the vehicle body 3. In an embodiment of the present creation, the rear side of the car body 3 has the sheet metal piece 31. When the sheet metal piece 31 is deformed by an impact, the sensor mounting frame 11 assembled on the sheet metal piece 31 will also follow the movement. Position, relative to the sensor installed on the sensor mounting frame 11 (not shown, such as blind spot detection sensor, ranging radar, etc.) shift, so that the sensor can not detect the set angle range and lose its Effectiveness as it should be. In an embodiment of this creation, the car body 3 must be repaired in the factory, and the maintenance personnel must first install the sensor installation angle inspection device 2 of this creation, and through the design of the protractor 23 and the laser marking device 24, it can be instantly Obtain the angle of the sensor, and then quickly tap the sheet metal piece 31 to return to the original correct position, and in the process of tapping the sheet metal piece 31, it can continuously check the tapped sheet metal piece 31 and its assembly in real time. The angle of the sensor installation frame 11 can save man-hours and improve maintenance efficiency.

Please refer to Fig. 2 and Fig. 3 at the same time. Fig. 2 is the system architecture diagram of the sensor installation angle inspection device of the preferred embodiment of the creation, and Figure 3 is the preferred embodiment of the creation. The exploded view of the sensor installation angle inspection device; please also refer to Figure 1 at the same time. When inspecting the angle of the sheet metal part 31 and the sensor mounting frame 11 assembled on it, the sensor installation angle inspection device 2 used in conjunction with the sheet metal part 31 of the car body 3 is used as shown in the figure. .

In a preferred embodiment of the invention, the above-mentioned sensor installation angle inspection device 2 includes at least three bracket rods 21, a reference plate 22, a protractor 23 and a laser reticle 24. The protractor 23 is a digital angle gauge. Among them, one end of each of the three support rods 21 is attached to the sensor mounting frame 11; the reference plate 22 is attached to the other end of each of the three support rods 21 and is connected to the sensor mounting frame 11 There is a distance between them in parallel; the protractor 23 is attached to the reference plate 22; the laser marker 24 is also attached to the reference plate 22. Accordingly, the reference plate 22 is set parallel to the sensor mounting frame 11, so that the angle generated by the sensor can be measured through the reference plate 22, and the configuration design of the protractor 23 can be conveniently performed in real time. The inspection of the installation angle of the sensor is extremely convenient in use and can save man-hours, thereby improving maintenance efficiency.

In this embodiment, the three bracket rods 21 are respectively a stud bolt, and one end of each of them is screw-locked to the sensor mounting frame 11, and at least one fixing screw hole is provided on the reference plate 22 (Not shown in the figure) It is bolted to the other end of each of the three bracket rods 21. According to design requirements, the bracket rod 21 can also utilize a snap-fitting and snap-fitting mechanism to connect the reference plate 22 and the sensor mounting frame 11 to each other.

As shown in the figure, in this embodiment, the reference plate 22 has an outer side 221 relatively far away from the sheet metal member 31, and the protractor 23 and the laser marker 24 are attached to the outer side 221 of the reference plate 22, respectively. Depending on design requirements, the protractor 23 and/or the laser marker 24 can also be attached to the side edge (surface) of the reference plate 22 at different positions.

The above-mentioned protractor 23 and laser reticle 24 are respectively provided with magnetic attraction devices (not shown in the figure) in this embodiment, and are attached to the outer side surface 221 of the reference plate 22 by magnetic attraction, and are magnetically attracted The protractor 23 and the laser marking device 24 can be disassembled and assembled quickly and easily, and the working hours can be greatly saved. Of course, the protractor 23 and/or the laser reticle 24 can also be attached to the reference plate 22 by means of a magic felt or a snap-fit mechanism according to design requirements. In addition, the protractor 23 is further used to sense the absolute angle of the geographic location, so as to uniformly detect the angle of the sensor installed on the sensor mounting frame 11.

Please refer to Fig. 4, which is a flowchart of the method for checking the installation angle of the sensor according to the preferred embodiment of the creation. Please also refer to Fig. 1 at the same time. The following will describe the steps of the sensor installation angle inspection method 4 in conjunction with the flowchart in Figure 4. In addition, in this embodiment, a sensor is installed on the rear side of the vehicle body 3 as an example, such as a blind spot detection sensor. In an example in which the sensor is installed on the front side of the vehicle body 3, the following description is related to the rear wheel 33 In the middle, only the rear wheel 33 needs to be changed to the front wheel 32.

As mentioned above, the method for checking the installation angle of the sensor is used in conjunction with the sheet metal part 31 of the car body 3. Similarly, the sheet metal part 31 is equipped with a sensor installation frame 11. The first step is the pre-operation inspection (step S01), such as checking whether the tire sizes of the two rear wheels 33 are the same, and/or checking the tire pressure of the two rear wheels 33, if the tire size and/or tire pressure are different, the car body 3 It will be tilted, which will cause the subsequent angle check to be inaccurate. In addition, the pre-operation inspection can also, for example, check whether the tools needed to be used are normal and not damaged, or whether the electronic equipment needs to be calibrated, etc. In a preferred embodiment of the present invention, the pre-operation inspection (step S01) is to check whether the tire pressure of the four tires of the car body 3 is normal to ensure that the angle of the subsequent inspection is correct. In another preferred embodiment of the present invention, in the pre-operation inspection step, the vehicle 3 should be parked on a level ground 40 (as shown in Figure 5) to ensure the accuracy of the angle measured by the protractor 23 sex.

Please refer to Fig. 5 again, which is one of the schematic diagrams of the method for inspecting the installation angle of the sensor according to the preferred embodiment of the creation. Please also refer to Fig. 4 at the same time. After completing the pre-work inspection, paste an indicator line 41 on the ground 40 (step S02). When marking the indicating marking 41, the indicating marking 41 can be cut to the outer edge of the rear wheel 33 and extending backward and pasting. The size of the indicating marking 41 is not limited, for example, the length L of the indicating marking 41 is not less than 1000mm, and the width W of the indicating marking 41 is not less than 30mm.

Please refer to Fig. 6, which is the second schematic diagram of the method for checking the installation angle of the sensor according to the preferred embodiment of the creation. Please also refer to Fig. 4 at the same time. In one embodiment, the indicator line 41 is any one of a paper tape, an indicator line drawn by a marker pen, etc., but it is not limited to this. And this creation takes paper tape as an example. After sticking the sticker tape on the floor 40, place an axis positioning frame 42 on the floor 40 and a cross bar 421 of the axis positioning frame 42 against the two rear wheels 33 of the car body 3 (step S03). Then, a reference line 43 (see Fig. 8) of the straight rod 422 perpendicular to the horizontal rod 421 of the axis positioning frame 42 is drawn on the indicator line 41 (step S04).

In order to facilitate drawing the reference line 43 on the indicator line 41, before step S03, that is, before the step of drawing the reference line 43 on the indicator line 41 along the straight rod 422 of the positioning frame 42 along the axis, the straight rod 422 can be confirmed first. The edge is covered within the range of the indicator line 41.

Please refer to Fig. 7, which is the third schematic diagram of the method for inspecting the installation angle of the sensor according to the preferred embodiment of the creation. Please also refer to Figs. 1 and 4 at the same time. After drawing the reference line 43, attach a reference plate 22 to the sensor mounting frame 11 and space the reference plate 22 and the sensor mounting frame 11 in parallel by a distance (step S05), and as described above, three brackets The rod 21 attaches the reference plate 22 to the sensor mounting frame 11. Next, attach a protractor 23 and a laser reticle 24 to the reference plate 22 (step S06), and as described above, the protractor 23 and the laser reticle 24 are attached to the reference plate 22 by magnetic adsorption, respectively.

Please refer to Fig. 8, which is a schematic diagram of the angle template of a preferred embodiment of the creation. Please also refer to Figs. 4 and 7 at the same time. After the various components are installed as described above, place an angle template 44 on the ground 40 and align the reference arrow 441 of the angle template 44 with the reference line 43 (step S07), so that the angle template 44 and the vehicle body 3 (and its center The relative relationship between the axis) is correct vertical/parallel, so that the subsequent angle inspection will not be inaccurate. The angle template 44 can be any of paper, acrylic plate, iron plate, rubber plate, etc., but is not limited to this.

As shown in Figure 8, the angle template 44 has three lines with different angles (θ1, θ2, θ3). The lines at angles θ1 and θ3 (dashed lines) represent the upper and lower limits of the specification value, and the line at angle θ2 ( The solid line) represents the middle value between the upper limit and the lower limit; in one embodiment of this creation, the middle value is 20 degrees, and the relative upper and lower limits are 24 degrees and 16 degrees respectively; in another embodiment of this creation, the middle value is 50 degrees, the relative upper and lower limits are 54 degrees and 46 degrees, respectively. In addition, in the embodiment of this creation, the three different angles (θ1, θ2, θ3) on the angle template 44 are based on the standard distance specified by the car factory to take the allowable upper and lower limits, and take the middle value, and then use the triangle The sine of the function sinθ, θ is the ratio of the opposite side to the hypotenuse, and the inverse trigonometric function sin ^-1 θ is used to calculate the standard angle (θ1, θ2, θ3); for example, the standard distance specified by the car factory is 29~42mm , Take the sum of the intermediate distance value as 35.5mm (that is, the opposite side value), and the hypotenuse distance is known to be 104mm, then the inverse trigonometric function sin ^-1 θ is used to calculate the angle, and the intermediate distance value is used to calculate the standard angle θ2 ,Sin ^-1 θ=(35.5/104)=19.9589 degrees, the decimal point is rounded to the standard angle θ2 (that is, the intermediate value angle θ2) is 20 degrees, and the error after the decimal point is rounded down is much smaller than the allowable reading angle of the inspection instrument The lower limit is ±3.6°, so it can be ignored; in the same way, the lower limit angle θ3 (that is, the lower limit angle θ3) is calculated, and the ratio of the lower limit to the hypotenuse is calculated by the inverse trigonometric function to obtain sin ^-1 θ=(29/ 104)=16.1913 degrees, the lower limit angle θ3 (that is, the lower limit angle θ3) is 16 degrees; in addition, the upper limit angle θ1 (that is, the upper limit angle θ1) is calculated by using the ratio of the upper limit to the hypotenuse and then the opposite The trigonometric function calculation ^{shows that sin -1} θ=(42/104)=23.8188 degrees, and the upper limit angle θ1 (that is, the upper limit angle θ1) is 24 degrees; it can be seen from the above that, in an embodiment of this creation, The angle template 44 has three lines with different angles (θ1, θ2, θ3). The lines at angles θ1 and θ3 (dashed lines) represent the upper and lower limits of the specification value, and the lines at angle θ2 (solid lines) represent the upper and lower limits. The intermediate value, where the intermediate value is 20 degrees, and the relative upper and lower limits are 24 degrees and 16 degrees, respectively, and so on, but not limited to this.

In addition, as shown in Fig. 4, Fig. 7 and Fig. 8, after the angle template 44 is placed, the angle of the sensor mounting frame 11 can be checked (step S08). At this time, the laser reticle 24 is used to irradiate A line is drawn. When checking the angle, the line of the laser reticle 24 must pass through point A on the angle template 44 as shown in Figure 8. If the line of the laser reticle 24 exceeds the angle θ1 and the angle The upper and lower limits represented by the line (dotted line) of θ3, such as the line 241 shown in Figure 8, means that the angle of the sensor mounting frame 11 is not within the specification range. If the sensor is installed in this wrong angle sensor mounting frame 11, the sensor cannot detect the set angle range, so the sheet metal 31 must be adjusted (step S09). For example, the maintenance personnel manually tap the sheet metal 31 to adjust the sheet metal 31 (and therefore the sensor installation frame 11), then check the angle of the sensor mounting frame 11. When the line of the laser marker 24, the line 242 shown in Figure 8, is within the line representing the upper and lower limits, it means the adjustment is complete . In addition, the protractor 23 can display the vertical angle of the sensor mounting frame 11. Similarly, if the angle displayed by the protractor 23 is not within the specification range (for example, the standard value of the vertical angle is +87.8 degrees to +92.2 degrees), tap the sheet metal 31 to adjust the sheet metal part 31 (and therefore the sensor mounting frame 11) to adjust the angle within the specification range.

As mentioned above, in the process of adjusting the sheet metal part 31, the protractor 23 and the laser marker 24 can continuously display the angle change after the adjustment (percussion), that is, during the adjustment process, the angle adjustment can be instantly and at any time. As a result, it is extremely convenient to use, greatly saves working hours, and relatively improves maintenance efficiency.

In addition, sometimes the adjustment plate 31 may be struck with greater force. In this case, the protractor 23 and the laser marker 24 can be removed first to avoid damage caused by the percussion vibration, and the protractor 23 And the laser marker 24 can be quickly and conveniently attached to the reference plate 22 or detached from the reference plate 22 (such as the above-mentioned magnetic adsorption), so during the adjustment process, the protractor 23 and the laser marker 24 can be quickly And it can be conveniently used for angle inspection, that is, it can also achieve the above-mentioned effects of convenient use, saving working hours, and improving maintenance efficiency.

The above are only the preferred specific embodiments of this creation, and they are not used to limit this creation. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this creation shall be included in this creation Within the scope of protection.

11: Perceptron installation frame 2: Sensor installation angle inspection device 21: Bracket rod 22: Reference board 221: Outer Side 23: Protractor 24: Laser marking device 241: Line 242: Line 3: car body 31: Sheet metal parts 32: front wheel 33: rear wheel 4: Inspection method of sensor installation angle 40: Ground 41: Indicating marking 42: Axis positioning frame 421: Crossbar 422: Straight 43: Baseline 44: Angle template 441: Datum Arrow S01: Step S02: Step S03: Step S04: Step S05: Step S06: Step S07: Step S08: Step S09: Step L: length W: width θ1: Angle θ2: Angle θ3: Angle

Figure 1 is a schematic diagram of the use state of the preferred embodiment of the creation. Figure 2 is the system architecture diagram of the sensor installation angle inspection device of the preferred embodiment of the creation. Figure 3 is an exploded view of the sensor installation angle inspection device of the preferred embodiment of the creation. Figure 4 is a flow chart of the method for checking the installation angle of the sensor according to the preferred embodiment of the creation. Figure 5 is one of the schematic diagrams of the method for checking the installation angle of the sensor according to the preferred embodiment of the creation. Figure 6 is the second schematic diagram of the method for checking the installation angle of the sensor according to the preferred embodiment of the creation. Figure 7 is the third schematic diagram of the method for inspecting the installation angle of the sensor according to the preferred embodiment of the creation. Figure 8 is a schematic diagram of the angle template for creating a preferred embodiment.

11: Perceptron installation frame

2: Sensor installation angle inspection device

21: Bracket rod

22: Reference board

221: Outer Side

23: Protractor

24: Laser marking device

3: car body

31: Sheet metal parts

32: front wheel

33: rear wheel

Claims (9)

A sensor installation angle inspection device is used in conjunction with at least one sheet metal part (31) of a car body (3), and the sheet metal part (31) is installed with a sensor installation frame (11), and the installation angle inspection device (2) ) Includes at least: At least one support rod (21) attached to the sensor mounting frame (11); A reference plate (22) attached to the other end of the bracket rod (21) and spaced a distance parallel to the sensor mounting frame (11); A protractor (23) attached to the reference plate (22); and A laser marker (24) is attached to the reference plate (22). The sensor installation angle inspection device according to claim 1, wherein a blind spot detection sensor is installed on the sensor installation frame (11). The sensor installation angle inspection device according to claim 1, wherein the bracket rods (21) are three, and one end of each of them is attached to the sensor installation frame (11), wherein the three The bracket rods (21) are respectively a stud bolt, and one end of each of them is screw-locked to the sensor mounting frame (11), and the reference plate (22) is screw-locked to the three The other end of each of the two bracket rods (21). The sensor installation angle inspection device according to claim 1, wherein the reference plate (22) has an outer side surface (221) relatively far away from the sheet metal part (31), and the protractor (23) and the laser marking line The devices (24) are respectively attached to the outer side surface (221) of the reference plate (22). The sensor installation angle inspection device according to claim 4, wherein the protractor (23) and the laser marker (24) are respectively attached to the outer side (22) of the reference plate (22) by magnetic adsorption 221). The sensor installation angle inspection device according to claim 1, wherein the protractor (23) is further used to sense the absolute angle of the geographic location. The sensor installation angle inspection device according to claim 1, further comprising an angle template (44) for projecting a line from the laser reticle (24), wherein the angle template (44) is There are three lines with different angles (θ1, θ2, θ3), among which the angle (θ1) and angle (θ3) lines (dashed lines) represent the upper and lower limits of the specification value, and the angle (θ2) lines (solid lines) represent the upper and lower limits The middle value of the lower limit. The sensor installation angle inspection device according to claim 7, wherein the line (solid line) of the angle (θ2) represents the middle value of the upper limit and the lower limit, the middle value is 20 degrees, and the angle (θ1) and the angle (θ3) ) The line (dashed line) represents the upper and lower limits of the specification value, which are 24 degrees and 16 degrees respectively. The sensor installation angle inspection device according to claim 7, wherein the line (solid line) of the angle (θ2) represents the middle value of the upper limit and the lower limit, the middle value is 50 degrees, and the angle (θ1) and the angle (θ3) ) The line (dotted line) represents the upper and lower limits of the specification value, the upper and lower limits are 54 degrees and 46 degrees, respectively.

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