Positioning fixtures and positioning systems

Abstract

This application relates to the field of positioning equipment technology, aiming to solve the problem of improving the positioning accuracy of fenders, and provides a positioning fixture and positioning system. The positioning fixture includes a first positioning structure and a second positioning structure. The first positioning structure includes a first positioning member, which is positioned between the fender and the door along a first direction. The second positioning structure includes a second positioning member and a moving mechanism. The second positioning member is positioned opposite and spaced apart from the first positioning member along the first direction and is used to pass through the fender. The moving mechanism includes a fixed base, a moving member, and an elastic member. The moving member is movably positioned on the fixed base along the first direction and is connected to the second positioning member. The elastic member elastically abuts against the fixed base and the moving member along the first direction, so that the fender is pressed tightly against the first positioning member along the first direction. The beneficial effect of this application is to improve the positioning accuracy of the fender.

Description

Technical Field

[0001] This application relates to the field of positioning equipment technology, and more specifically, to positioning tooling and positioning systems. Background Technology

[0002] A positioning fixture is provided in the related technology for positioning the fender relative to the vehicle body. However, the machining dimensions of the fender may fluctuate due to tolerances and other factors, affecting the positioning accuracy. Utility Model Content

[0003] This application provides positioning fixtures and a positioning system to address the problem of how to improve the positioning accuracy of fenders.

[0004] According to one aspect of this application, a positioning fixture is provided for positioning a fender relative to a vehicle body, the vehicle body including a door and a body frame. The positioning fixture includes a first positioning structure and a second positioning structure. The first positioning structure includes a first positioning member, which is disposed between the fender and the door along a first direction. The second positioning structure includes a second positioning member and a moving mechanism. The second positioning member is disposed opposite to and spaced apart from the first positioning member along the first direction. The second positioning member is used to pass through the fender. The moving mechanism includes a fixed base, a moving member, and an elastic member. The moving member is movably disposed on the fixed base along the first direction and is connected to the second positioning member. The elastic member elastically abuts against the fixed base and the moving member along the first direction, so that the fender is pressed tightly against the first positioning member along the first direction.

[0005] The aforementioned positioning fixture, by setting a first positioning member, positions the gap between the fender and the door along a first direction. An elastic member abuts against the moving member and the fixed seat along the first direction, causing the moving member to tend to move towards the first positioning member. Furthermore, because the second positioning member is connected to the moving member, under the elastic force of the elastic member, the second positioning member abuts against the fender along the first direction towards the first positioning member, thereby ensuring the fender is tightly against the first positioning member along the first direction, accurately positioning the gap between the fender and the door along the first direction. Therefore, even if the fender has dimensional fluctuations in the first direction due to tolerances, it can ensure that the fender is tightly against the first positioning member, improving the positioning and assembly accuracy of the fender and avoiding deformation of the fender due to rigid compression.

[0006] In one embodiment, the movable member includes a guide rod and an adjusting member disposed on the guide rod. The guide rod is movably inserted through a fixed base along a first direction and connected to a second positioning member. An elastic member elastically abuts against the adjusting member and the fixed base along the first direction. The adjusting member is movable relative to the guide rod, allowing the guide rod to move relative to the fixed base along the first direction under the push of the elastic member.

[0007] In one embodiment, the guide rod is movably inserted through the fixed base along a first direction, with both ends of the guide rod extending out of the fixed base. There are two adjusting members, each corresponding to and connected to one end of the guide rod. There are also two elastic members, each corresponding to one end of the guide rod, and elastically abutting against the corresponding adjusting member and the fixed base along the first direction.

[0008] In one embodiment, the adjusting member includes an abutment and a gasket. The abutment is disposed on the guide rod and located on the side of the corresponding elastic member away from the fixed seat. The gasket is detachably snapped onto the guide rod and located between the abutment and the corresponding elastic member. Alternatively, the adjusting member is sleeved on the outside of the guide rod and threadedly connected to the guide rod.

[0009] In one embodiment, the moving mechanism further includes a locking member movably disposed on the fixed seat and used to abut against the guide rod to fix the guide rod relative to the fixed seat.

[0010] In one embodiment, the moving mechanism further includes a slide rail and a movable seat. The slide rail extends along a first direction, and the movable seat is connected to the moving member and can move together with the moving member. The movable seat is slidably connected to the slide rail along the first direction. A second positioning member is disposed on the movable seat.

[0011] In one embodiment, the first positioning structure further includes a first positioning block and a second positioning block. The first positioning block has a first positioning surface on one side along the second direction, which is used to position and cooperate with the fender. The second positioning block has a second positioning surface on the same side along the second direction, which is used to position and cooperate with the door. The second direction intersects with the first direction. Along the first direction, the first positioning member is located between the first positioning block and the second positioning block.

[0012] In one embodiment, the second positioning member is used to position the fender along a second direction; wherein the second direction intersects with the first direction; and / or, the second positioning structure further includes a first clamping mechanism, the first clamping mechanism including a first reference member and a first pressing member, the first pressing member being used to press the fender against the first reference member along the second direction; wherein the second direction intersects with the first direction.

[0013] In one embodiment, the second positioning structure further includes a third positioning member and a second clamping mechanism. The third positioning member is inserted into the vehicle body to position the second positioning structure relative to the vehicle body along a first direction and a second direction. The second clamping mechanism includes a second reference member and a second clamping member. The second clamping member is used to clamp the second reference member along a third direction to position the second positioning structure relative to the vehicle body along the third direction. The first direction, the second direction, and the third direction intersect each other.

[0014] According to another aspect of this application, a positioning system is provided, including the positioning fixtures described in any of the above embodiments. Two positioning fixtures are provided, spaced apart along a second direction, and are used to position two fenders respectively. The second direction intersects with the first direction. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a top view of a vehicle according to one embodiment of this application.

[0017] Figure 2 for Figure 1 Side view of the positioning fixture, door, and fender in the illustrated embodiment.

[0018] Figure 3 for Figure 2 A perspective view of the positioning fixture in the illustrated embodiment.

[0019] Figure 4 for Figure 2 A side view of the second positioning structure in the illustrated embodiment.

[0020] Figure 5 for Figure 2 A top view of the second positioning structure in the illustrated embodiment.

[0021] Figure 6 for Figure 2 A bottom view of the second positioning structure in the illustrated embodiment.

[0022] Figure 7 for Figure 2 A partial structural diagram of the second positioning structure in the illustrated embodiment.

[0023] Figure 8 for Figure 7 A partial structural side view of the second positioning structure in the illustrated embodiment.

[0024] Figure 9 for Figure 7 A partial top view of the second positioning structure in the illustrated embodiment.

[0025] Figure 10 for Figure 7 A partial structural side view of the moving mechanism in the initial position in the illustrated embodiment.

[0026] Figure 11 for Figure 10 A partial structural side view of the moving mechanism in the illustrated embodiment at its central position.

[0027] Figure 12 for Figure 10 A partial structural side view of the moving mechanism in the illustrated embodiment during position adjustment.

[0028] Figure 13 This is a partial structural side view of the moving mechanism in the middle position according to another embodiment of this application.

[0029] Explanation of key component symbols: Positioning System 1000 Positioning tooling 100 First positioning structure 10 First positioning component 11 First positioning block 12 First positioning surface 121 Second positioning block 13 Second positioning surface 131 First magnetic component 14 Second magnetic component 15 Second positioning structure 20 Second positioning component 21 Mobile mechanisms 22, 22A Slide rail 221 Mobile seat 222 Fixture 223 Moving part 225 Guide rod 2251 Adjusting component 2252 First adjusting component 2252a Second adjusting element 2252b Attachment 22521 Gasket 22522 Elastic component 227 First elastic element 227a Second elastic element 227b Locking component 229 First clamping mechanism 23 First reference component 231 First clamping component 232 First driving component 233 Third positioning component 24 Main locating pin 241 Secondary locating pin 242 Second clamping mechanism 25 Second reference component 251 Third positioning block 251a Fourth positioning block 251b Fifth positioning block 251c Second clamping element 252 Second drive unit 253 Vehicle 2000 Fender 2100 2200 vehicle body Car door 2201 Body 2202 First direction X Second direction Y Third direction Z The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0031] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] Example Figure 1 This is a top view of a vehicle 2000 according to an embodiment of this application; Figure 2 for Figure 1 Side view of positioning fixture 100, door 2201 and fender 2100 in the embodiment shown.

[0035] See Figure 1 and Figure 2 This embodiment provides a positioning system 1000, including two positioning fixtures 100. The positioning fixtures 100 are used to position a fender 2100 relative to a vehicle body 2200. The vehicle body 2200 includes a door 2201. The positioning fixtures 100 are used to position the fender 2100 relative to the door 2201 along a first direction X. The two positioning fixtures 100 are spaced apart along a second direction Y and are used to position the two fenders 2100 respectively. The second direction Y intersects the first direction X.

[0036] The aforementioned positioning system 1000 uses two separate positioning fixtures 100 to position the two fenders 2100. Because the two positioning fixtures 100 are separate, no connecting structure is needed between them, simplifying the structure of the positioning system 1000. Furthermore, the small size and weight of each positioning fixture 100 eliminate the need for a lifting mechanism, reducing operational difficulty and safety risks. This, in turn, improves the positioning efficiency and accuracy of the positioning system 1000. It also facilitates quick switching of the positioning fixtures 100 when multiple vehicle models are on the same production line. During operation, the two positioning fixtures 100 can be used to position the two fenders 2100 relative to the vehicle body 2200, allowing for simultaneous assembly of both fenders 2100. It should be noted that... Figure 2 This is only used to illustrate the relative positions of the fender 2100, door 2201, and positioning fixture 100, and does not represent the actual structure of the fender 2100 and door 2201. Optionally, door 2201 can be the front door of vehicle 2000.

[0037] In use, the first direction X can be the length direction of the vehicle 2000, and the second direction Y can be the width direction of the vehicle 2000. The two fenders 2100 are the left fender and right fender of the vehicle 2000, respectively.

[0038] Figure 3 for Figure 2 A perspective view of the positioning fixture 100 in the illustrated embodiment; Figure 4 for Figure 2 Side view of the second positioning structure 20 in the illustrated embodiment; Figure 5 for Figure 2 A top view of the second positioning structure 20 in the illustrated embodiment; Figure 6 for Figure 2 A bottom view of the second positioning structure 20 in the illustrated embodiment.

[0039] See Figures 1 to 3 The positioning fixture 100 in this embodiment includes a first positioning structure 10 and a second positioning structure 20. The first positioning structure 10 includes a first positioning member 11, which is positioned along a first direction X between the fender 2100 and the door 2201. Figures 4 to 6 As shown, the second positioning structure 20 includes a second positioning member 21 and a moving mechanism 22. The second positioning member 21 is positioned opposite to and spaced apart from the first positioning member 11 along the first direction X, and is used to pass through the fender 2100. The moving mechanism 22 includes a fixed base 223, a moving member 225, and an elastic member 227. The moving member 225 is movably disposed on the fixed base 223 along the first direction X and is connected to the second positioning member 21. The elastic member 227 elastically abuts against the fixed base 223 and the moving member 225 along the first direction X, so that the fender 2100 is pressed against the first positioning member 11 along the first direction X.

[0040] The aforementioned positioning fixture 100, by setting a first positioning member 11, positions the gap between the fender 2100 and the door 2201 along the first direction X. By setting an elastic member 227 abutting against the movable member 225 and the fixed seat 223 along the first direction X, the movable member 225 tends to move towards the side closer to the first positioning member 11 along the first direction X. And because the second positioning member 21 is connected to the movable member 225, the second positioning member 21, under the elastic force of the elastic member 227, abuts against the fender 2100 along the first direction X towards the side closer to the first positioning member 11, thereby making the fender 2100 fit tightly against the first positioning member 11 along the first direction X, so as to accurately position the gap size between the fender 2100 and the door 2201 along the first direction X. Therefore, even if the fender 2100 has dimensional fluctuations in the first direction X due to tolerances, it can still ensure that the fender 2100 is tightly attached to the first positioning member 11 along the first direction X, improving the positioning and assembly accuracy of the fender 2100 and avoiding deformation of the fender 2100 due to rigid compression. It should be noted that "the fender 2100 is tightly attached to the first positioning member 11 along the first direction X" means that the fender 2100 and the first positioning member 11 are in contact without gaps, and the elastic force of the elastic member 227 provides a preload force to maintain the fender 2100 in a stable and tight fit with the first positioning member 11. In use, the first positioning member 11 is located on the side of the second positioning member 21 away from the front of the vehicle 2000 along the first direction X. The first positioning member 11 and the second positioning member 21 are, for example, positioning pins.

[0041] Figure 7 for Figure 2 A partial structural schematic diagram of the second positioning structure 20 in the illustrated embodiment; Figure 8 for Figure 7 A partial structural side view of the second positioning structure 20 in the illustrated embodiment; Figure 9 for Figure 7 A partial top view of the second positioning structure 20 in the illustrated embodiment.

[0042] In some embodiments, such as Figures 7 to 9As shown, the movable member 225 includes a guide rod 2251 and an adjusting member 2252 disposed on the guide rod 2251. The guide rod 2251 is movably inserted through the fixed base 223 along a first direction X and connected to the second positioning member 21. An elastic member 227 elastically abuts against the adjusting member 2252 and the fixed base 223 along the first direction X. The adjusting member 2252 is movable relative to the guide rod 2251, so that the guide rod 2251 moves relative to the fixed base 223 along the first direction X under the push of the elastic member 227. Thus, by moving the adjusting member 2252 relative to the guide rod 2251, the compression of the elastic member 227 is adjusted, thereby changing the elastic force of the elastic member 227. After adjustment, the elastic force applied by the elastic member 227 to the guide rod 2251 is different from the elastic force before adjustment, which can push the guide rod 2251 to move, causing the second positioning member 21 connected to the guide rod 2251 to move relative to the fixed seat 223 along the first direction X. This ensures that the second positioning member 21 abuts against the fender 2100 under the elastic force of the elastic member 227, making the fender 2100 close to the first positioning member 11. Therefore, during operation, the adjusting member 2252 can be adjusted according to the actual relative position between the fender 2100 and the first positioning member 11 to change the position of the second positioning member 21 along the first direction X, ensuring that after adjustment, the second positioning member 21 abuts against the fender 2100 along the first direction X under the action of the elastic member 227. Since the above adjustment operation does not require changing the position of the fender 2100 and the fixed seat 223, the adjustment operation is convenient, and the positioning fixture 100 can be flexibly adjusted according to the size of the fender 2100 along the first direction X when assembling different fenders 2100, so as to ensure the positioning accuracy when positioning different fenders 2100.

[0043] Figure 10 for Figure 7 A partial structural side view of the moving mechanism 22 in the initial position in the illustrated embodiment; Figure 11 for Figure 10 A partial structural side view of the moving mechanism 22 in the middle position in the embodiment shown; Figure 12 for Figure 10 A partial structural side view of the moving mechanism 22 in the illustrated embodiment during position adjustment.

[0044] In some embodiments, such as Figures 10 to 12As shown, the guide rod 2251 is movably inserted into the fixed base 223 along the first direction X, with both ends of the guide rod 2251 extending out of the fixed base 223. There are two adjusting members 2252, each corresponding to and connected to both ends of the guide rod 2251. There are also two elastic members 227, each corresponding to both ends of the guide rod 2251, and elastically abutting against the corresponding adjusting member 2252 and the fixed base 223 along the first direction X. Thus, by providing two elastic members 227, the difference in elastic force between the two elastic members 227 pushes the guide rod 2251 relative to the fixed base 223, thereby driving the second positioning member 21 (see...) through the guide rod 2251. Figure 9 Fine adjustments are made relative to the fixed seat 223 along the first direction X. It should be noted that... Figures 10 to 12 This is only used to illustrate the adjustment process of the moving mechanism 22 and does not represent the actual structure of the moving mechanism 22.

[0045] For example, suppose the two elastic elements 227 are the first elastic element 227a and the second elastic element 227b, and the two adjusting elements 2252 are the first adjusting element 2252a and the second adjusting element 2252b, respectively. The first elastic element 227a is located near the first positioning element 11 of the second elastic element 227b (see...). Figure 3 On one side of the first adjusting member 2252a, the second elastic member 227b abuts against the second adjusting member 2252b. In the initial position (see...) Figure 10 ), the second positioning component 21 and the fender 2100 (see Figure 2 The corresponding positioning holes (not shown) on the fender 2100 are aligned. At this time, there may be a gap between the fender 2100 and the first positioning member 11 due to dimensional fluctuations. Therefore, the second positioning member 21 needs to apply a contact force to the fender 2100 towards the first positioning member 11 so that the fender 2100 and the first positioning member 11 are tightly attached. During adjustment, the first adjusting member 2252a can be adjusted to the middle position to reduce the distance between the first adjusting member 2252a and the fixed seat 223, that is, to increase the compression of the first elastic member 227a. This increases the elastic force of the first elastic member 227a compared to before adjustment. After the external force for adjustment is released, the first elastic member 227a pushes the adjusting member 2252 away from the fixed seat 223 under the tendency to return to its original state. This drives the guide rod 2251 to move along the first direction X towards the side closer to the fender 2100 to the adjustment position, so that the second positioning member 21 provides a contact force to make the fender 2100 and the first positioning member 11 tightly attached.

[0046] It should be noted that the initial position refers to the position before adjustment. At this time, the guide rod 2251 can move relative to the fixed seat 223, and the two adjusting parts 2252 at both ends of the guide rod 2251 are respectively subjected to the elastic forces of the two elastic elements 227. The guide rod 2251 is in a balanced state of being stationary relative to the fixed seat 223. The intermediate position refers to the position during the adjustment process. At this time, the guide rod 2251 is locked relative to the fixed seat 223, and the compression of one of the elastic elements 227 is changed by operating the adjusting parts 2252, so that the elastic forces applied by the two elastic elements 227 to the two adjusting parts 2252 are not equal. The adjusted position refers to the position after adjustment. At this point, the position lock of the guide rod 2251 relative to the fixed seat 223 is released. Because the elastic forces applied by the two elastic elements 227 at both ends of the guide rod 2251 to the two adjusting elements 2252 are unequal during unlocking, the difference in elastic force pushes the guide rod 2251, causing the second positioning element 21 to shift relative to the middle position along the first direction X until the guide rod 2251 is balanced and returns to rest relative to the fixed seat 223. At this point, the guide rod 2251 is in the adjusted position after adjustment. In the adjusted position, the second positioning element 21 abuts against the fender 2100 along the first direction X towards the side closer to the first positioning element 11, ensuring that the fender 2100 is tightly against the first positioning element 11 and guaranteeing the positioning accuracy in the first direction X.

[0047] It is understandable that when adjusting the position of the adjusting member 2252 relative to the guide rod 2251, the guide rod 2251 can be fixed relative to the fixed seat 223 for easy adjustment. After the adjusting member 2252 is adjusted, the fixing of the guide rod 2251 to the fixed seat 223 is released so that the guide rod 2251 can move relative to the fixed seat 223 under the push of the elastic force.

[0048] In some embodiments, such as Figure 11 As shown, the adjusting member 2252 includes an abutment member 22521 and a shim 22522. The abutment member 22521 is disposed on the guide rod 2251 and located on the side of the corresponding elastic member 227 away from the fixed seat 223. The shim 22522 is detachably snapped onto the guide rod 2251 and is located between the abutment member 22521 and the corresponding elastic member 227. During adjustment, the distance between the adjusting member 2252 and the fixed seat 223 along the first direction X is changed by attaching and removing the shim 22522, that is, the compression amount of the elastic member 227 is changed. Since the thickness of the shim 22522 is easy to determine, the thickness of the shim 22522 can be determined according to the gap between the fender 2100 and the first positioning member 11 during adjustment, so as to achieve fast and accurate adjustment. For example, the gasket 22522 can be installed on the side of the first elastic element 227a away from the fixed seat 223 to increase the compression of the first elastic element 227a. Thus, after adjustment, under the action of the elastic force difference between the first elastic element 227a and the second elastic element 227b, the guide rod 2251 drives the second positioning element 21 (see...). Figure 3 It moves toward the side closer to the first positioning element 11.

[0049] Figure 13 This is a partial structural side view of the moving mechanism 22A in the middle position according to another embodiment of this application.

[0050] In other embodiments, such as Figure 13 As shown, the adjusting member 2252 (such as a nut) is sleeved on the outside of the guide rod 2251 and threadedly connected to the guide rod 2251. During adjustment, the distance between the adjusting member 2252 and the fixed seat 223 along the first direction X is changed by turning the adjusting member 2252, that is, the compression of the elastic member 227 is changed. For example, the first adjusting member 2252a can be turned toward the fixed seat 223 to increase the compression of the first elastic member 227a. Thus, after the adjustment is completed, the elastic force difference between the first elastic member 227a and the second elastic member 227b pushes the guide rod 2251 toward the first positioning member 11 (see...). Figure 2 (Move to one side)

[0051] In some embodiments, such as Figure 11 As shown, the moving mechanism 22 also includes a locking member 229, which is movably inserted into the fixed base 223. The locking member 229 abuts against the guide rod 2251 to fix the guide rod 2251 relative to the fixed base 223. Thus, when adjusting the adjusting member 2252, the locking member 229 can lock the position of the guide rod 2251 relative to the fixed base 223, facilitating the operation of the adjusting member 2252 to adjust the distance between the adjusting member 2252 and the fixed base 223. After adjusting the adjusting member 2252, the locking member 229 is removed, allowing the guide rod 2251 to move relative to the fixed base 223 under the push of an elastic force, thereby achieving adjustment.

[0052] In some embodiments, such as Figure 8 As shown, the moving mechanism 22 also includes a slide rail 221 and a moving base 222. The slide rail 221 extends along the first direction X. The moving base 222 is connected to the moving member 225 and can move together with the moving member 225. The moving base 222 is slidably connected to the slide rail 221 along the first direction X. A second positioning member 21 is provided on the moving base 222. Thus, the moving base 222 and the slide rail 221 provide guidance for the movement of the guide rod 2251 along the first direction X.

[0053] In some embodiments, such as Figure 2 and Figure 3As shown, the first positioning structure 10 also includes a first positioning block 12 and a second positioning block 13. The first positioning block 12 has a first positioning surface 121 on one side along the second direction Y, which is used to position and engage with the fender 2100. The second positioning block 13 has a second positioning surface 131 on the same side along the second direction Y, which is used to position and engage with the door 2201. Along the first direction X, the first positioning member 11 is located between the first positioning block 12 and the second positioning block 13. Thus, by setting the first positioning block 12 and the second positioning block 13 to position the surface difference between the surfaces of the door 2201 and the fender 2100 on the same side along the second direction Y, the fender 2100 is positioned relative to the door 2201 along the second direction Y. In use, the first positioning block 12 and the second positioning block 13 can be located on the side of the fender 2100 and the door 2201 facing outwards from the vehicle 2000, respectively.

[0054] In some embodiments, such as Figure 3 As shown, the first positioning structure 10 also includes a first magnetic member 14 and a second magnetic member 15. The first magnetic member 14 is disposed on the side of the first positioning block 12 near the first positioning surface 121 to provide magnetic attraction so that the first positioning surface 121 is attached to the fender 2100. The second magnetic member 15 is disposed on the side of the second positioning block 13 near the second positioning surface 131 to provide magnetic attraction so that the second positioning surface 131 is attached to the door 2201.

[0055] In some embodiments, such as Figure 2 As shown, there are two first positioning structures 10, spaced apart along the third direction Z. The first direction X, the second direction Y, and the third direction Z intersect each other. It should be noted that because the fender 2100 is relatively thin and may deform under stress, the two first positioning structures 10 are used to position different parts of the fender 2100 along the third direction Z to improve the positioning accuracy of the fender 2100. Optionally, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other. It should be noted that perpendicularity within 5°, or an angle between two adjacent directions between 85° and 95°, can be considered perpendicular. In use, the third direction Z can be the height direction of the vehicle 2000.

[0056] In some embodiments, such as Figure 2 As shown, the second positioning member 21 is used to position the fender 2100 along the second direction Y to improve the positioning accuracy of the fender 2100 on the side away from the first positioning structure 10 along the second direction Y.

[0057] In some embodiments, such as Figure 2 and Figure 3 As shown, the second positioning structure 20 also includes a first clamping mechanism 23 (such as a hook clamping mechanism or a clamping mechanism), combined with Figure 5 and Figure 6 As shown, the first clamping mechanism 23 includes a first reference member 231 and a first clamping member 232. The first clamping member 232 is used to press the fender 2100 against the first reference member 231 along the second direction Y, so as to improve the positioning accuracy of the fender 2100 along the second direction Y. Optionally, the first clamping mechanism 23 further includes a first driving member 233 (such as a handle). The first driving member 233 is connected to the first clamping member 232 and is used to drive the first clamping member 232 to press the fender 2100 against the first reference member 231, or to drive the first clamping member 232 away from the fender 2100.

[0058] In some embodiments, such as Figure 2 and Figure 3 As shown, the second positioning member 21 is spaced apart from the first clamping mechanism 23 along the first direction X, and also spaced apart from the first clamping mechanism 23 along the third direction Z, so as to position different parts of the fender 2100 along the second direction Y. In use, the second positioning member 21 can be located on the side of the first clamping mechanism 23 near the door 2201 and on the side of the first clamping mechanism 23 near the roof, so as to position the upper part of the fender 2100 along the second direction Y, and the first clamping mechanism 23 is used to position the front part of the fender 2100 along the second direction Y.

[0059] In some embodiments, such as Figure 3 and Figure 4 As shown, the second positioning structure 20 also includes a third positioning element 24 (such as a positioning pin) and a second clamping mechanism 25 (such as a hook clamping mechanism or a clamping mechanism). The third positioning element 24 is used to pass through the vehicle body 2202 (see... Figure 1 The second positioning structure 20 is positioned relative to the vehicle body 2202 along the first direction X and the second direction Y. The second clamping mechanism 25 includes a second reference member 251 and a second clamping member 252. The second clamping member 252 is used to clamp the second reference member 251 along the third direction Z to position the second positioning structure 20 relative to the vehicle body 2202 along the third direction Z. In this way, the positioning fixture 100 is positioned relative to the vehicle body 2202 along the first direction X, the second direction Y, and the third direction Z. Optionally, the second clamping mechanism 25 also includes a second driving member 253 (such as a handle). The second driving member 253 is connected to the second clamping member 252 to drive the second clamping member 252 to clamp the vehicle body 2202 against the second reference member 251, or to drive the second clamping member 252 away from the vehicle body 2202. The vehicle body 2202 can be a front end structure of the vehicle body, such as a headlight bracket.

[0060] In some embodiments, such as Figure 3As shown, there are three second reference members 251, namely the third positioning block 251a, the fourth positioning block 251b, and the fifth positioning block 251c. Each second clamping member 252 corresponds to one of the second reference members 251. There are two second driving members 253; one driving member 253 is connected to two of the second clamping members 252, and the other driving member 253 is connected to the other second clamping member 252. Figure 4 As shown, there are two third positioning components 24, namely the main positioning pin 241 and the auxiliary positioning pin 242.

[0061] The aforementioned positioning fixture 100 is positioned relative to the vehicle body 2202 along the first direction X, the second direction Y and the third direction Z respectively, and the fender 2100 is positioned along the second direction Y by the first clamping mechanism 23, the second positioning component 21 and the first positioning block 12, and the fender 2100 is positioned along the first direction X by the cooperation of the second positioning component 21 and the first positioning component 11.

[0062] In some embodiments, the vehicle body 2202 also includes a fender bracket (not shown) that supports the fender 2100 in the third direction Z to position the fender 2100 in the third direction Z.

[0063] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A positioning fixture for positioning a fender relative to a vehicle body, the vehicle body including a door and a body, characterized in that, The positioning fixture includes: A first positioning structure includes a first positioning member, the first positioning member being disposed between the fender and the door along a first direction; and... The second positioning structure includes a second positioning element and a moving mechanism. The second positioning element is positioned opposite to and spaced apart from the first positioning element along the first direction. The second positioning element is used to pass through the fender. The moving mechanism includes a fixed base, a moving element, and an elastic element. The moving element is movably disposed on the fixed base along the first direction. The moving element is connected to the second positioning element. The elastic element elastically abuts against the fixed base and the moving element along the first direction, so that the fender is pressed tightly against the first positioning element along the first direction.

2. The positioning fixture according to claim 1, characterized in that: The movable component includes a guide rod and an adjusting component disposed on the guide rod. The guide rod is movably inserted through the fixed base along the first direction and connected to the second positioning component. The elastic element elastically abuts against the adjusting element and the fixed base along the first direction; The adjusting member is movable relative to the guide rod, so that the guide rod moves relative to the fixed seat along the first direction under the push of the elastic member.

3. The positioning fixture according to claim 2, characterized in that: The guide rod is movably inserted through the fixed base along the first direction, and both ends of the guide rod extend out of the fixed base respectively; There are two adjusting components, and the two adjusting components correspond to and are connected to the two ends of the guide rod, respectively; There are two elastic elements, each corresponding to one end of the guide rod, and elastically abutting against the corresponding adjusting element and the fixing seat along the first direction.

4. The positioning fixture according to claim 2, characterized in that: The adjusting member includes an abutment and a gasket. The abutment is disposed on the guide rod and located on the side of the corresponding elastic member away from the fixed seat. The gasket is detachably snapped onto the guide rod and located between the abutment and the corresponding elastic member. or, The adjusting component is sleeved on the outside of the guide rod and threadedly connected to the guide rod.

5. The positioning fixture according to claim 2, characterized in that: The moving mechanism further includes a locking member that is movably disposed on the fixed base and is used to abut against the guide rod to fix the guide rod relative to the fixed base.

6. The positioning fixture according to claim 1, characterized in that: The moving mechanism further includes a slide rail and a moving seat. The slide rail extends along the first direction, and the moving seat is connected to the moving member and can move together with the moving member. The moving seat is slidably connected to the slide rail along the first direction. The second positioning element is located on the movable seat.

7. The positioning fixture according to claim 1, characterized in that: The first positioning structure further includes a first positioning block and a second positioning block. The first positioning block has a first positioning surface on one side along the second direction, and the first positioning surface is used for positioning and engaging with the fender. The second positioning block has a second positioning surface on the same side along the second direction, and the second positioning surface is used for positioning and engaging with the door. The second direction intersects with the first direction. Along the first direction, the first positioning element is located between the first positioning block and the second positioning block.

8. The positioning fixture according to claim 1, characterized in that: The second positioning element is used to position the fender along a second direction; wherein the second direction intersects the first direction; And / or, The second positioning structure further includes a first clamping mechanism, which includes a first reference member and a first pressing member. The first pressing member is used to press the fender against the first reference member along a second direction; wherein the second direction intersects with the first direction.

9. The positioning fixture according to claim 1, characterized in that: The second positioning structure also includes a third positioning element and a second clamping mechanism; The third positioning member is used to pass through the vehicle body to position the second positioning structure relative to the vehicle body along the first direction and the second direction; The second clamping mechanism includes a second reference member and a second clamping member. The second clamping member is used to clamp the second reference member along a third direction to position the second positioning structure relative to the vehicle body along the third direction. The first direction, the second direction, and the third direction intersect each other.

10. A positioning system, characterized in that, The device includes a positioning fixture as described in any one of claims 1 to 9, wherein there are two positioning fixtures, which are spaced apart along a second direction and are used to position the two fenders respectively. The second direction intersects with the first direction.

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