Positioning target and four-wheel alignment system

Abstract

The embodiment of the present invention relates to the technical field of automobile detection equipment, and discloses a positioning target and a four-wheel positioning system, wherein the positioning target comprises: a target plate, wherein the target plate is provided with a position indicating pattern, wherein the position indicating pattern is used to indicate the position information of the positioning target; a flexible protective member, wherein the flexible protective member is arranged around the periphery of the target plate; and a shell, wherein the shell comprises a main body and a frame arranged around the periphery of the main body, wherein the frame encloses a receiving space, wherein the target plate and the flexible protective member are arranged in the receiving space, wherein the flexible protective member is located between the target plate and the shell, and wherein the flexible protective member is used to buffer the interaction force between the shell and the target plate. In the above manner, the embodiment of the present invention avoids the problem of deformation or even breakage of the target due to vibration, collision or falling, thereby extending the service life of the product.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of automobile detection equipment, and in particular to a positioning target and a four-wheel alignment system. Background Art

[0002] After a long time and long mileage of driving, the relative position between the wheels will have a certain deviation. If it is not corrected, it will not only affect the driving performance of the car, but also accelerate the wear of system components such as the tires and steering mechanism. Therefore, it is usually necessary to perform a four-wheel alignment test on the car after it has been driven for a period of time.

[0003] During the four-wheel alignment test, the target is installed on the wheel hub of the car, and then the position indication pattern on the target is collected by the image acquisition device on the alignment instrument and other testing equipment to obtain the position information of the four wheels and perform corresponding operations. Since the target lacks an effective protection structure, it is easy to deform or even break due to vibration, collision or falling, resulting in product failure and short service life. Summary of the invention

[0004] In view of the above problems, the embodiments of the present invention provide a positioning target and a four-wheel positioning system to avoid deformation or even breakage of the target due to vibration, collision or falling, thereby extending the service life of the product.

[0005] According to one aspect of an embodiment of the present invention, there is provided a positioning target, comprising: a target plate, the target plate being provided with a position indication pattern, the position indication pattern being used to indicate the position information of the positioning target; a flexible protective member, the flexible protective member being arranged around the periphery of the target plate; a shell, the shell comprising a main body and a frame arranged around the periphery of the main body, the frame enclosing a receiving space, the target plate and the flexible protective member being arranged in the receiving space, the flexible protective member being located between the target plate and the shell, and the flexible protective member being used to buffer the interaction force between the shell and the target plate.

[0006] In an optional manner, the target plate includes a stacked support layer, a reflective layer, and a pattern layer located between the support layer and the reflective layer, the pattern layer is provided with the position indication pattern, and the support layer is located on a side of the pattern layer facing the main body; the flexible protective member is fitted on the periphery of the target plate to seal the stacking gap between the support layer, the pattern layer and the reflective layer.

[0007] In an optional manner, the flexible protective member includes a first wall and a second wall arranged around the outer periphery of the first wall; the target plate also has a connecting surface facing the main body, the first wall is located between the connecting surface and the main body, and the second wall is located between the outer peripheral wall of the target plate and the inner peripheral wall of the frame.

[0008] In an optional embodiment, the flexible protective member also includes a third wall, which is arranged at both ends of the second wall opposite to the first wall, and the first wall, the second wall and the third wall are combined to form a groove for fitting with the edge of the target plate, and the third wall is provided with an avoidance opening for revealing the position indication pattern.

[0009] In an optional manner, the outer wall surface of the frame is further provided with a plurality of anti-collision convex portions, and the plurality of anti-collision convex portions are arranged around the outer circumference of the frame.

[0010] In an optional manner, the anti-collision protrusion and the frame are an integrated structure.

[0011] In an optional manner, in a direction perpendicular to the plane where the target plate is located, the anti-collision protrusion extends along the direction of the target plate toward one side of the main body and protrudes outside the frame, and / or the anti-collision protrusion extends along the direction of the main body toward one side of the target plate and protrudes outside the frame.

[0012] In an optional manner, an adhesive is further included, which is arranged on the shell and located in the receiving space, and is used to bond the shell and the target plate, and / or to bond the shell and the flexible protective member.

[0013] In an optional manner, a plurality of first reinforcing ribs are provided on a side of the main body facing the target plate, and the plurality of first reinforcing ribs are staggered to form a plurality of receiving grooves, a portion of at least one of the adhesive members is located in the receiving groove and fixedly connected to the main body, and another portion is located outside the receiving groove and fixedly connected to the target plate and / or the flexible protective member; and / or a reinforcing protrusion is further provided on a side of the main body facing away from the receiving space, and the reinforcing protrusion encloses a closed loop area on the main body.

[0014] According to another aspect of an embodiment of the present invention, a four-wheel alignment system is provided, comprising: an image acquisition device and the above-mentioned positioning target, wherein the image acquisition device is used to obtain the position indication pattern of the positioning target to obtain the position information of the positioning target according to the position indication pattern.

[0015] When the positioning target of the embodiment of the present invention is in use, the flexible protective part can play a buffering and protective role for the target plate, thereby preventing the target plate from being deformed or even broken due to rigid collision between the target plate and the protective shell when the positioning target is vibrated or falls on the ground, thereby preventing the risk of product failure and inability to be used normally, thereby improving product reliability and service life. In addition, with this structural method, the shell, target plate and flexible edging structure have a simple structure, and the installation process is simple and convenient, which is conducive to reducing production costs.

[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0018] Figure 1 An exploded view of a positioning target provided by an embodiment of the present invention is shown;

[0019] Figure 2 A front view of a positioning target provided by an embodiment of the present invention is shown;

[0020] Figure 3 Shows Figure 2 Cross-sectional view along AA direction;

[0021] Figure 4 A schematic cross-sectional structure diagram of a target plate provided by an embodiment of the present invention is shown;

[0022] Figure 5 A three-dimensional cross-sectional view of a flexible protective member provided by an embodiment of the present invention is shown;

[0023] Figure 6 A three-dimensional cross-sectional view of a flexible protective member provided by another embodiment of the present invention is shown;

[0024] Figure 7 A stereogram of a positioning target in another embodiment of the present invention is shown;

[0025] Figure 8 An exploded view of a positioning target in another embodiment of the present invention is shown;

[0026] Fig. 9An exploded view from another perspective of the positioning target in the embodiment of the present invention is shown.

[0027] The reference numerals in the specific implementation manner are as follows:

[0028] Shell 10; main body 11; first reinforcing rib 111; reinforcing protrusion 112; second reinforcing rib 113; frame 12; anti-collision protrusion 121; axial hole 131; connecting hole 132; connecting part 13; target plate 20; position indicating pattern 21; supporting layer 22; pattern layer 23; reflective layer 24; flexible protective member 30; first wall 31; second wall 32; third wall 33; groove 34; adhesive member 40; mounting shaft 50; limiting hole 51; fixing member 60; positioning target 100. DETAILED DESCRIPTION

[0029] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0030] See also Figures 1 to 3 , Figure 1 An exploded view of a positioning target 100 provided by an embodiment of the present invention is shown. Figure 2 FIG. 1 shows a front view of a positioning target 100 provided by an embodiment of the present invention. Figure 3 Shows Figure 2 Cross-sectional view along the AA direction.

[0031] In the embodiment shown in the figure, the positioning target 100 includes a shell 10, a target plate 20 mounted on the shell 10, and a flexible protective member 30. The target plate 20 is provided with a position indicating pattern 21, and the position indicating pattern 21 is used to indicate the position information of the positioning target. The flexible protective member 30 is arranged around the periphery of the target plate 20, the shell 10 includes a main body 11 and a frame 12 arranged around the periphery of the main body 11, the frame 12 encloses a receiving space for accommodating the target plate 20, the target plate 20 and the flexible protective member 30 are arranged in the receiving space, the flexible protective member 30 is located between the target plate 20 and the shell 10, and the flexible protective member 30 is used to buffer the force between the shell 10 and the target plate 20. Among them, the position indicating pattern can be circular, rectangular or a combination thereof, or it can be other patterns that can be used for the detection device to obtain the position information of the positioning target through the image acquisition device, such as a QR code.

[0032] The positioning target 100 in this embodiment is installed in the housing 10 by surrounding the target plate 20 with a flexible protective member 30 and installing it in the receiving space formed by the frame 12 surrounding the outer circumference of the main body 11. Since the flexible protective member 30 is located between the target plate 20 and the housing 10, and is used to buffer the force between the housing 10 and the target plate 20, when the positioning target 100 is in use, the flexible protective member 30 can protect the target plate 20. When the positioning target 100 is vibrated or falls to the ground and bumps, the risk of the target plate 20 being deformed or even broken due to a rigid collision with the protective shell, resulting in product failure and inability to be used normally, can be reduced, and the product reliability and service life can be improved. In addition, in this structural mode, the housing 10, the target plate 20 and the flexible edge structure have simple structures, and the installation process is simple and convenient, which is conducive to reducing production costs.

[0033] In some embodiments, the flexible protective member 30 can also be used to provide a pressing force on the target plate 20 along the inner peripheral wall of the frame 12 toward the outer peripheral wall of the target plate 20. That is, in a direction parallel to the plane of the target plate 20, the portion of the flexible protective member 30 located between the inner peripheral wall of the target plate 20 and the inner peripheral wall of the frame 12 is in compression contact with the inner peripheral wall of the target plate 20 and the inner peripheral wall of the frame 12, respectively, so that the target plate 20 can be fixed in the receiving space by the elastic force of the flexible protective member 30.

[0034] See also Figures 2 to 4 , Figure 4 The cross-sectional structure diagram of the target plate 20 provided by the embodiment of the present invention is shown. In the specific embodiment shown in the figure, the target plate 20 includes a stacked support layer 22, a pattern layer 23 and a reflective layer 24, wherein the pattern layer 23 is located between the support layer 22 and the reflective layer 24, the pattern layer 23 is provided with a position indicating pattern 21, and the support layer 22 is located on the side of the pattern layer 23 facing the main body 11. The flexible protective member 30 is arranged on the periphery of the target plate 20 by being attached to seal the stacking gap between the support layer 22, the pattern layer 23 and the reflective layer 24.

[0035] The support layer 22 can be made of glass, wherein the glass can be organic glass or inorganic glass. It is understandable that the support layer 22 can also be made of other materials to form a plate-like structure with a certain flatness, so as to provide a flat support plane for the reflective layer 24 and the pattern layer 23. The reflective layer 24 can be made of transparent materials, such as transparent plastic, glass, etc. The pattern layer 23 can be a pattern printed on the side of the reflective layer 24 facing the support layer 22, or a pattern printed on the side of the support layer 22 facing the reflective layer 24. The printing method can be screen printing, spray printing, etc., and no specific restrictions are made here. Of course, the pattern layer 23 can also be a sheet member printed with a pattern, such as a piece of paper, etc.

[0036] In this embodiment, the target plate 20 is provided with a layered structure formed by stacking a support layer 22, a pattern layer 23 and a reflective layer 24, and a flexible protective member 30 is arranged around the periphery of the target plate 20, so that the flexible protective member 30 can seal the stacking gaps between the support layer 22, the pattern layer 23 and the reflective layer 24, so that external water vapor is not easy to enter between the stacking layers of the target plate 20, thereby preventing the pattern from getting damp and causing the product to be unable to be used normally.

[0037] See also Figure 5 , and combined with Figures 1 to 4 , Figure 5 The 3D cross-sectional view of the flexible protective member 30 provided by the embodiment of the present invention is shown. In the specific embodiment shown in the figure, the flexible protective member 30 includes a first wall 31 and a second wall 32 arranged around the periphery of the first wall 31. The target plate 20 also has a connecting surface facing the main body 11 facing the main body, the first wall 31 is located between the main body 11 and the connecting surface, and the second wall 32 is located between the outer peripheral wall of the target plate 20 and the inner peripheral wall of the frame 12. Specifically, the connecting surface can be a side of the support layer 22 facing the main body 11.

[0038] The flexible protective member 30 is provided with a first wall 31 and a second wall 32. Since the first wall 31 is located between the main body 11 and the connecting surface of the target plate 20 facing the main body 11, the first wall 31 can be used to buffer the force between the main body 11 and the target plate 20. The second wall 32 is located between the outer peripheral wall of the target plate 20 and the inner peripheral wall of the frame 12, so that the second wall 32 can be used to buffer the force between the target plate 20 and the frame 12, thereby avoiding a rigid collision between the shell 10 and the target plate 20.

[0039] Please continue reading Figures 1 to 5 In the specific embodiment shown in the figure, the flexible protective member 30 also includes a third wall 33, and the third wall 33 and the first wall 31 are arranged at both ends of the second wall 32 relative to each other, and the first wall 31, the second wall 32 and the third wall 33 enclose a groove 34 for fitting with the edge of the target plate 20, and the third wall 33 is provided with an avoidance opening for revealing the position indication pattern 21.

[0040] Among them, the flexible protective member 30 is sleeved with the outer peripheral edge of the target plate 20 through the groove 34, so that the first wall 31 of the flexible protective member is in contact with the side (connecting surface) of the target plate 20 facing the main body 22, the second wall 32 is in contact with the outer peripheral wall of the target plate 20, and the third wall 33 is in contact with the side of the target plate 20 facing outside the receiving space.

[0041] In this embodiment, the edge portion of the target plate 20 is sleeved in a groove 34 enclosed by the third wall 33 and the first wall 31 on the inner circumferential wall of the second wall 32, so that the flexible protective member 30 plays a edging role on the target plate 20, thereby improving the waterproof performance of the flexible protective member 30. At the same time, the first wall 31, the second wall 32 and the third wall 33 of the flexible edging can protect the target plate 20 in all directions. In this way, the flexible protective member 30 and the target plate 20 can be sleeved together, which is convenient for disassembly and assembly.

[0042] In some embodiments, the first wall 31 may also be provided with a clearance opening of the same size as the third wall 33, so that the flexible protective member 30 forms a closed annular structure that matches the outer peripheral wall of the target plate 20. It should be noted that the annular structure does not specifically refer to a circular ring, but refers to a structure similar to an annular structure, such as the rectangular annular structure shown in the figure. Of course, in some other embodiments, the first wall 31 may not be provided with a clearance opening, such as Figure 6 As shown, Figure 6 A three-dimensional cross-sectional view of a flexible protective member 30 provided in accordance with another embodiment of the present invention is shown.

[0043] Please return to Figures 1 to 3 In the specific embodiment shown in the figure, the outer wall surface of the frame 12 is provided with a plurality of anti-collision convex portions 121, and the plurality of anti-collision convex portions 121 are arranged around the outer periphery of the frame 12. The anti-collision convex portions 121 are used to reduce the probability of collision between the main body 11 of the housing 10 and other parts of the frame 12 and the outside.

[0044] As an example, when the positioning target 100 falls to the ground, the anti-collision protrusion 121 can collide with the ground first, so that the anti-collision protrusion 121 consumes most of the impact force caused by the collision, thereby reducing the probability of the main body 11 or other parts of the frame 12 being damaged by colliding with the ground, weakening the force between the shell 10 and the target plate 20 due to the collision, and reducing the damage to the target plate 20.

[0045] In the specific embodiment shown in the figure, the anti-collision protrusion 121 can be made of hard materials, such as metal materials such as copper, iron, aluminum and their alloys, or other hard alloy materials. Of course, the anti-collision protrusion 121 can also be made of other hard materials with good structural strength, such as hard plastics such as PC and PET.

[0046] In this embodiment, the anti-collision convex portion 121 is made of hard material to provide a better structural strength, thereby effectively reducing damage to the anti-collision convex portion 121 caused by collision.

[0047] Preferably, the anti-collision protrusion 121 can be made of a lightweight metal such as aluminum or aluminum alloy that is hard and light.

[0048] In other embodiments, the anti-collision protrusion 121 can also be made of a flexible material, such as rubber, so that the anti-collision protrusion 121 can buffer the force during the collision through the elasticity of the flexible material, reduce the damage to the target plate 20 when the collision force is transmitted to the target plate 20, and thus avoid deformation or damage to the target plate 20 due to the collision.

[0049] In the specific embodiment shown in the figure, the anti-collision protrusion 121 and the frame 12 are an integrated structure to improve the structural strength of the anti-collision protrusion 121.

[0050] Those skilled in the art should understand that, in other embodiments, the anti-collision protrusion 121 and the frame 12 may not be an integrated structure.

[0051] In some embodiments, in a direction perpendicular to the plane of the target plate 20, the anti-collision protrusion 121 extends along the direction of the target plate 20 toward one side of the main body 11 and protrudes outside the frame 12, and / or the anti-collision protrusion 121 extends along the direction of the main body 11 toward one side of the target plate 20 and protrudes outside the frame 12.

[0052] That is, in the direction perpendicular to the connecting surface of the target plate 20, the anti-collision protrusion 121 can protrude in the direction of the target plate 20 toward the side of the main body 11, or the anti-collision protrusion 121 protrudes along the direction of the main body 11 toward the side of the target plate 20, or the anti-collision protrusion 121 protrudes in the direction of the target plate 20 toward the side of the main body 11, and at the same time, the anti-collision protrusion 121 protrudes along the direction of the main body 11 toward the side of the target plate 20.

[0053] Among them, in the case where the anti-collision protrusion 121 extends along the direction of the target plate 20 toward the main body 11 and protrudes out of the frame, the portion of the anti-collision protrusion 121 extending in this direction will collide with the outside first, thereby reducing the probability of the main body 11 colliding with the outside on the side away from the receiving space; similarly, in the case where the anti-collision protrusion 121 extends along the direction of the main body 11 toward the target plate 20 and protrudes out of the frame, the portion of the anti-collision protrusion 121 extending in this direction will collide with the outside first, thereby reducing the probability of the target plate 20 and other parts of the frame 12 colliding with the outside on the same side of the main body 11 toward the target plate 20. In this way, the anti-collision protrusion 121 can also play a certain anti-collision protection role on the main body 11, frame 12 and target plate 20 of the positioning target 100 in the direction perpendicular to the target plate 20.

[0054] See also Figure 7 and Figure 8 , and combined with Figure 1 and Figure 2 , Figure 7FIG. 1 shows a three-dimensional view of a positioning target 100 in another embodiment of the present invention. Figure 8 FIG. 1 is an exploded view of a positioning target 100 in another embodiment of the present invention. In the specific embodiment shown in the figure, the housing 10 is polygonal, circular or elliptical. That is, the outer shape of the housing 10 is a polygonal, circular or elliptical structure.

[0055] As an example, when the shell 10 is rectangular, the frame 12 is a rectangular frame, wherein the target plate 20 can also be a rectangular plate, and the flexible protective member 30 can also be a square ring structure adapted to the outer peripheral wall of the target plate 20, and the anti-collision protrusion 121 is arranged at the corners of the outer peripheral wall of the frame 12.

[0056] For example, when the shell 10 is circular, the frame 12 is a circular frame, wherein the target plate 20 can be a circular plate, the flexible protective member 30 can also be a circular ring structure adapted to the outer wall shape of the target plate 20, and the anti-collision protrusion 121 is evenly arranged around the outer wall of the frame 12.

[0057] It should be noted that when the shell 10 is polygonal, it can be a regular polygon, such as a square, a regular pentagon, etc., or a non-regular polygon, such as a rectangle, a regular polygon, or an irregular polygon. The shapes of the shell 10, the target plate 20, and the flexible protective member 30 are only examples. There is no necessary correlation between the specific shapes of the shell 10 and the specific shapes of the target plate 20 and the flexible protective member 30. The shell 10, the target plate 20, and the flexible protective member 30 can have different shape structures.

[0058] In some embodiments, the housing 10 and the anti-collision protrusion 121 are made of the same or different materials.

[0059] Please return to Figures 1 to 4 In the specific embodiment shown in the figure, the positioning target 100 also includes an adhesive 40, which is arranged on the shell 10 and located in the receiving space. The adhesive 40 is used to bond the shell 10 and the target plate 20, and / or to bond the shell 10 and the flexible protective member 30.

[0060] That is, the adhesive 40 can bond and fix the shell 10 to the target plate 20, or the adhesive 40 can bond and fix the shell 10 to the flexible protective member 30, or the adhesive 40 can bond and fix the positioning target 100 to the shell 10, and at the same time, the adhesive 40 can also bond and fix the flexible protective member 30 to the shell 10. It should be noted that, since the flexible protective member 30 itself has elastic force and is arranged around the periphery of the target plate 20, when the adhesive 40 only bonds and fixes the shell 10 to the flexible protective member 30, the flexible protective member 30 can also fix the target plate 20 in the shell 10 by virtue of its own elastic force.

[0061] In this example, by setting the adhesive 40, the target plate 20 and the flexible protective member 30 can be installed and fixed in the receiving space of the shell 10 by bonding. This connection method is simple and convenient, has a good fixing effect, is easy to install, and has a low cost.

[0062] Specifically, one end of the adhesive member 40 is connected to the main body 11 , and the other end of the adhesive member 40 is connected to the target plate 20 and / or the flexible protective member 30 .

[0063] As an example, in the case where the first wall 31 of the flexible protective member 30 is not provided with a clearance opening, one end of the adhesive member 40 is connected to the main body 11, and the other end of the adhesive member 40 is connected to the side of the first wall 31 of the flexible protective member 30 facing the main body 11. In the case where the flexible protective member 30 is provided with a clearance opening, one end of the adhesive connection member is connected to the main body 11, and the other end passes through the clearance opening of the first wall 31 and is fixedly connected to the connection surface of the target plate 20 facing the main body 11 (that is, the side of the support layer 22 facing the main body 11).

[0064] It is understandable that in other embodiments, the adhesive 40 may also be located between the second wall 32 of the flexible protective member 30 and the inner peripheral wall of the frame 12 to fix the second wall 32 of the flexible protective member 30 to the frame 12 of the shell 10 .

[0065] In the specific embodiment shown in the figure, a plurality of first reinforcing ribs 111 are provided on a side of the main body 11 facing the target plate 20, and the plurality of first reinforcing ribs 111 are staggered to form a plurality of receiving grooves, a portion of at least one adhesive member 40 is located in the receiving groove and fixedly connected to the main body 11, and another portion of at least one adhesive member 40 is located outside the receiving groove and fixedly connected to the target plate 20 and / or the flexible protective member 30.

[0066] That is, the number of adhesives 40 can be less than or equal to the number of receiving slots. For example, the number of receiving slots can be 6, while the number of adhesives 40 can be 4. The receiving slots in which the adhesives 40 are placed can be arranged according to actual needs, and no specific limitation is made here.

[0067] In this embodiment, a plurality of first reinforcing ribs 111 are provided on one side of the main body 11 located in the receiving space. The first reinforcing ribs 111 improve the structural strength of the main body 11 , which is beneficial to its lightweight design when certain structural strength requirements are met.

[0068] See also Fig. 9 , and combined with Figure 1 , Fig. 9The exploded view of the positioning target 100 in the embodiment of the present invention is shown in another perspective. In the embodiment shown in the figure, a reinforcing protrusion 112 is further provided on the side of the main body 11 away from the receiving space, and the reinforcing protrusion 112 encloses the main body 1 to form a closed loop area.

[0069] In the closed loop area, when the shell 10 collides with the outside, the reinforcing protrusion 112 is more likely to collide with the outside first. Therefore, the reinforcing protrusion 112 plays a certain protective role on the part of the main body 11 in the closed loop area.

[0070] Specifically, the reinforcing protrusion 112 can be connected to the anti-collision protrusion 121, that is, the reinforcing protrusion 112 is sequentially connected to multiple anti-collision protrusions 121 along the circumferential direction of the main body 11, and a plurality of second reinforcing ribs 113 are arranged side by side near the anti-collision protrusion 121 in the closed loop area to improve the structural strength of the adjacent position of the shell 10 and the anti-collision protrusion 121.

[0071] In some embodiments, the adhesive member 40 is made of a flexible material. As an example, the adhesive member 40 can be a viscous glass adhesive pad made of glass adhesive material, and the glass adhesive has strong adhesion to parts made of metal, glass and other materials. Therefore, for the housing 10 made of metal material and the support layer 22 of the target plate 20 made of glass material with good flatness, the glass adhesive pad can be directly bonded and fixed to the main body 11 and the target plate 20 respectively.

[0072] Of course, in other embodiments, the adhesive member 40 may also be made of other flexible materials, such as a silicone pad made of silicone material.

[0073] It should be noted that the adhesive member 40 is made of a flexible material, which means that the main material of the adhesive member 40 is a flexible material, and in order to increase the viscosity of the adhesive member 40, other materials that can increase the viscosity, such as adhesives, can be added to the flexible material.

[0074] In this embodiment, the adhesive 40 is made of a flexible material so that in addition to fixing the flexible protective member 30 and the target plate 20 in the shell 10, the adhesive 40 can also buffer part of the force between the shell 10 and the target plate 20 through its own elastic properties when a collision or vibration occurs, so as to protect the target plate 20 and increase its service life.

[0075] In the specific embodiment shown in the figure, the positioning target 100 is also equipped with an axis 50, and a connecting portion 13 is also provided on the side of the main body 11 away from the receiving groove. The connecting portion 13 is provided with an axis hole 131. One end of the mounting axis 50 is fixed in the axis hole 131, and the other end of the mounting axis 50 is located outside the axis hole 131. The other end of the mounting axis 50 is used for fixed connection with an external connecting member. For example, when in use, the mounting axis 50 is fixedly connected through a wheel hub clamp so that the positioning target 100 is installed and fixed on the wheel hub of the car. Among them, the connecting portion 13 can be located in the closed loop area of ​​the main body 11.

[0076] In the specific embodiment shown in the figure, the installation shaft 50 is detachably connected to the shaft hole 131. Specifically, the positioning target 100 also includes a fixing member 60, which is a conventional fixing member 60 such as a bolt, and the connecting portion 13 is also provided with at least one connecting hole 132 connected to the shaft hole 131. The installation shaft 50 is provided with a limiting hole 51 at a position corresponding to the connecting hole 132 at one end of the shaft hole 131. One end of the fixing member 60 is screwed with the connecting hole 132 and inserted into the limiting hole 51, so as to fix the installation shaft 50 to the connecting portion 13 of the housing 10. In this connection mode, the installation shaft 50 and the housing 10 are convenient to disassemble and assemble, and convenient to use.

[0077] In another aspect of the present application, a four-wheel alignment system is provided, which includes an image acquisition device and a positioning target 100. The image acquisition device is used to acquire a position indication pattern 21 on a target plate 20 of the positioning target 100, so as to obtain position information of the positioning target 100 according to the position indication pattern 21.

[0078] Among them, the image acquisition device can be a camera in a four-wheel aligner, and the number of positioning targets 100 is four. When in use, the four positioning targets 100 are respectively installed in the four tires of the car. The image acquisition device obtains the position indication pattern 21 of the positioning target 100 by shooting, and obtains the position information of the positioning target 100 after computer processing of the four-wheel aligner, thereby obtaining relevant parameter information of the four wheels of the car, such as kingpin castor (angle), kingpin inclination (angle), front wheel toe, rear wheel toe, etc.

[0079] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present invention should have the common meanings understood by technicians in the field to which the embodiments of the present invention belong.

[0080] In the description of the embodiments of the present invention, the orientations or positional relationships indicated by the technical terms "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0081] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0082] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A positioning target, characterized in that: include: A target plate, wherein the target plate is provided with a position indicating pattern, and the position indicating pattern is used to indicate the position information of the positioning target; A flexible protective member, wherein the flexible protective member is disposed around the periphery of the target plate; A shell, the shell comprising a main body and a frame arranged around the outer periphery of the main body, the frame encloses a receiving space, the target plate and the flexible protective member are arranged in the receiving space, the flexible protective member is located between the target plate and the shell, and the flexible protective member is used to buffer the interaction force between the shell and the target plate; The target plate comprises a stacked support layer, a reflective layer and a pattern layer between the support layer and the reflective layer, the pattern layer is provided with the position indicating pattern, the support layer is located on a side of the pattern layer facing the main body, and the support layer is a plate-shaped structural member; The flexible protective member is arranged on the periphery of the target plate to seal the lamination gap between the support layer, the pattern layer and the reflective layer; The flexible protective member includes a first wall and a second wall arranged around the periphery of the first wall; The target plate also has a connection surface facing the main body, the first wall is located between the connection surface and the main body, and the second wall is located between the outer peripheral wall of the target plate and the inner peripheral wall of the frame.

2. The positioning target according to claim 1, characterized in that: The flexible protective member also includes a third wall, which is arranged at both ends of the second wall opposite to the first wall, and the first wall, the second wall and the third wall are combined to form a groove for fitting with the edge of the target plate, and the third wall is provided with an avoidance opening for revealing the position indication pattern.

3. The positioning target according to claim 1, characterized in that: The outer wall surface of the frame is also provided with a plurality of anti-collision convex parts, and the plurality of anti-collision convex parts are arranged around the outer periphery of the frame.

4. The positioning target according to claim 3, characterized in that: The anti-collision convex portion and the frame are an integrated structure.

5. The positioning target according to claim 3, characterized in that: In a direction perpendicular to the plane where the target plate is located, the anti-collision protrusion extends along the direction of the target plate toward one side of the main body and protrudes out of the frame, and / or the anti-collision protrusion extends along the direction of the main body toward one side of the target plate and protrudes out of the frame.

6. The positioning target according to any one of claims 1 to 5, characterized in that: It also includes an adhesive component, which is arranged on the shell and located in the receiving space, and is used to bond the shell and the target plate, and / or to bond the shell and the flexible protective component.

7. The positioning target according to claim 6, characterized in that: A plurality of first reinforcing ribs are disposed on one side of the main body facing the target plate, the plurality of first reinforcing ribs are staggered to form a plurality of receiving grooves, a portion of at least one of the adhesive members is located in the receiving groove and fixedly connected to the main body, and another portion is located outside the receiving groove and fixedly connected to the target plate and / or the flexible protective member; and / or A reinforcing convex portion is further provided on a side of the main body away from the receiving space, and the reinforcing convex portion is surrounded on the main body to form a closed loop area.

8. A four-wheel alignment system, characterized in that: include: An image acquisition device and a positioning target as described in any one of claims 1 to 7, wherein the image acquisition device is used to acquire the position indication pattern of the positioning target to acquire the position information of the positioning target according to the position indication pattern.

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