Detection tool for front seat mounting point on vehicle body

Abstract

A testing fixture for front seat mounting points on a vehicle body comprises a frame and is characterized in that a plurality of units are correspondingly mounted on the frame for a plurality of mounting points, each of the plurality of units is provided with a detection hole, and the detection holes are configured to be positioned on the corresponding front seat mounting points around the corresponding front seat mounting points during detection; moreover, at least two units in the plurality of units are also integrated with positioning devices, and the positioning devices are configured to be coaxially aligned with the corresponding detection holes, so that the corresponding detection holes are centered and positioned around the corresponding front seat installation points through the positioning devices during detection. Therefore, detection can be carried out according to whether the detection holes of the other units shield the front seat mounting points below the detection holes or not. By means of the detection tool, the position state of the front seat installation point on the vehicle body can be rapidly detected based on the key control point, and therefore whether the vehicle body with problems can be delivered to a final assembly or not can be rapidly recognized and judged.

Description

Technical Field

[0001] The present application relates to a checking fixture, and more particularly to a vehicle body front seat mounting point checking fixture, which is used to detect vehicle body mounting points on a vehicle body for mounting a front seat. Background Art

[0002] With the development of economy and the improvement of living standards, cars have become the first choice for many consumers, and consumers also pay special attention to the safety performance of cars. Among them, the effective fixation of seats, especially front seats, plays a vital role in safety. In the body structure of existing cars, the front seat mounting beam is fixed on the front floor of the car, and is directly connected and installed with the front seat through the mounting holes on the mounting bracket on the beam.

[0003] In vehicle production, the entire vehicle body with such a front seat mounting crossbeam is usually sent to the final assembly station for assembly with other automotive parts. However, at the final assembly station, if the mounting point (mounting hole) used to connect and install the front seat is found to be deviated in position and the front seat cannot be effectively fixed, this will result in the need to return the vehicle body, and may even cause the vehicle body to be scrapped, resulting in a waste of time and economic losses. Therefore, the front seat mounting holes on the vehicle body are usually inspected before the vehicle body is sent to the final assembly. At present, the vehicle body will be inspected online during the vehicle trial production stage, but at this stage, the body size state itself is unstable, and out-of-tolerance states that do not meet the standards often occur. Moreover, only part of the vehicle body can be sampled through gom (optical measurement) inspection, which cannot meet 100% measurement. In addition, the online test itself is also in the debugging stage and cannot accurately reflect the actual state. As a result, once an out-of-tolerance situation occurs during the mass production stage of the vehicle body, the relevant personnel cannot quickly confirm and judge the impact on the subsequent installation. In other words, the vehicle body will still be sent to the final assembly station to wait for feedback from the final assembly. This requires a long wait time, such as at least two days, which results in high risks, for example: once the final assembly feedback indicates a problem and a large amount of buffer has been produced on the vehicle body side, the cost of rework will increase. Utility Model Content

[0004] In view of the above problems, the present application aims to provide a vehicle body front seat installation point inspection fixture, which can solve at least one of the above problems existing in the prior art.

[0005] To this end, the present application proposes a test fixture for front seat mounting points on a vehicle body, the test fixture comprising a frame, characterized in that, for a plurality of front seat mounting points, a plurality of units are correspondingly mounted on the frame, each of the plurality of units is provided with a detection hole, the detection hole being configured to be positioned around the corresponding front seat mounting point during detection; and at least two of the plurality of units are further integrated with a positioning device, the positioning device being configured to be coaxially aligned with the corresponding detection hole, so that during detection, the corresponding detection hole is centered and positioned around the corresponding front seat mounting point by the positioning device, so that detection is performed by determining whether the detection holes of the remaining units block the front seat mounting point below them.

[0006] Therefore, by using the inspection fixture according to the present application, the position status of the front seat installation point on the vehicle body can be quickly inspected based on the key control points. Whether in the trial production or mass production stage, 100% inspection can be performed if necessary. In this way, when deviations occur, the risks to the final assembly installation can be quickly confirmed. There is no need to wait for the final feedback of the final assembly, avoiding the delivery of defective vehicles and the production of a large number of defective buffer vehicles.

[0007] Advantageously, one of the at least two units integrated with the positioning device is configured to be mounted on the frame in an unadjustable manner relative to the frame, while the remaining units are configured to be mounted on the frame in an adjustably manner relative to the one unit along a first direction and / or a second direction. The first direction corresponds to a direction along the length of the vehicle body during detection, while the second direction is orthogonal to the first direction and corresponds to a direction along the width of the vehicle body during detection. In this way, the detection hole on the inspection fixture can be accurately positioned to correspond to the front seat upper hole that theoretically cooperates with the front seat mounting hole on the vehicle body to mount the front seat.

[0008] Advantageously, for each front seat, the front seat mounting point comprises four mounting holes on the vehicle body. For the four mounting holes, the frame is correspondingly mounted with four units at its four corners, and two of the four units are each integrated with the positioning device.

[0009] Advantageously, the four mounting holes are: two planar mounting holes, the two planar mounting holes are located on the inner side relative to the width direction of the vehicle body, and relative to the length direction of the vehicle body, one of the planar mounting holes faces forward close to the front of the vehicle and the other planar mounting hole faces backward away from the front of the vehicle; and two boss-shaped mounting holes protrude relative to the two planar mounting holes, the two boss-shaped mounting holes are located on the outer side relative to the width direction of the vehicle body, and relative to the length direction of the vehicle body, one of the boss-shaped mounting holes faces forward close to the front of the vehicle, referred to as the front outer boss-shaped mounting hole, and the other boss-shaped mounting hole faces backward away from the front of the vehicle, referred to as the rear outer boss-shaped mounting hole. Advantageously, the two positioning devices integrated in the two units are each in the form of a positioning sleeve, protruding from the lower side relative to the frame, and are configured to be respectively covered on the two boss-shaped mounting holes to position the inspection fixture during inspection, while the other two units are flush with the lower side relative to the frame, so as to be placed flatly around the two planar mounting holes through their inspection holes during inspection.

[0010] Advantageously, the four units are mounted on the frame, for example, respectively via carrier plates fixedly connected to the outer sides of the four corners of the frame.

[0011] Advantageously, one of the two units integrated with the positioning sleeve is configured to be mounted on the corresponding carrier plate of the frame in an unadjustable manner relative to the frame. Its positioning sleeve protrudes from the lower surface of the corresponding carrier plate, so that during detection, the cylindrical inner wall of its positioning sleeve is matched and clamped on the cylindrical outer peripheral wall of the front outer boss-shaped mounting hole. This unit is called the reference positioning unit, and its positioning sleeve is called the main positioning sleeve.

[0012] Advantageously, the reference positioning unit is in an integral form and comprises: a main body with a cylindrical shape, which is configured to pass through a specially provided through circular opening on the corresponding carrier plate in a circumferentially gapless manner, and the main body is separated in its cylindrical interior by an inner shoulder forming a corresponding detection hole in the center, thereby forming an upper main body and a lower main body connected on the inner side through the corresponding detection hole, and the lower main body constitutes the main positioning sleeve; a fixing protrusion, which at least partially extends radially outward on the upper circumferential edge of the cylinder, so that the reference positioning unit is fastened to the upper surface of the corresponding carrier plate by the fixing protrusion in a non-adjustable manner relative to the frame.

[0013] Advantageously, the other of the two units integrated with the positioning sleeve is configured to be adjustably mounted on the corresponding carrier plate of the frame along the first direction relative to the reference positioning unit. Its positioning sleeve protrudes from the lower surface of the corresponding carrier plate, so that during detection, the cylindrical inner wall of its positioning sleeve is matched and clamped on the cylindrical outer peripheral wall of the rear outer boss-shaped mounting hole. The other unit is called an auxiliary positioning unit, and its positioning sleeve is called a secondary positioning sleeve.

[0014] Advantageously, the auxiliary positioning unit is in an integral shape, comprising: a main cylinder, in which an inner shoulder forming a corresponding detection hole in the center is divided into an upper main body and a lower main body constituting the auxiliary positioning sleeve; two ears, which are radially opposite to each other at the upper part of the main cylinder and are arranged on the upper surface of the corresponding carrier plate on both sides of a first through opening provided in the corresponding carrier plate along the second direction. One of the two ears and both sides of the first through opening is provided with at least two through oblong holes extending in the first direction and the other is provided with at least two through circular holes, and the main cylinder and the first through opening are configured so that the main cylinder passes through the first through opening with a gap at least in the first direction, thereby allowing the auxiliary positioning unit to be adjustably mounted on the corresponding carrier plate of the frame along the first direction.

[0015] Advantageously, the main cylinder extends upward near the detection hole at least between the two ears at the rear side along the first direction to form a first convex portion, and the corresponding carrier plate is provided with a first convex block erected from its upper surface adjacent to the first through opening at the rear side along the first direction. The first convex portion and the first convex block are configured to allow one or more gaskets to be arranged between them along the first direction, so as to further adjustably mount the auxiliary positioning unit on the corresponding carrier plate of the frame along the first direction.

[0016] Advantageously, the first through opening is linear on both sides along the first direction, and the main cylinder of the auxiliary positioning unit is correspondingly constructed to be planar on both sides along the first direction, so that the main cylinder of the auxiliary positioning unit passes through the first through opening with a gap along the first direction.

[0017] Advantageously, one of the other two units is opposite to the reference positioning unit along the second direction, referred to as the first detection unit, and is configured to be adjustably mounted on a corresponding carrier plate of the frame along the second direction relative to the reference positioning unit.

[0018] Advantageously, the first detection unit is in an integral shape, comprising: a first cylindrical body with a corresponding detection hole formed therein, configured to be completely received vertically in a second through opening specially provided in the corresponding carrier plate with a gap at least along the second direction; an upper stage, partially surrounding the first cylindrical body at the upper part of the first cylindrical body, configured to be arranged on the upper surface of the corresponding carrier plate on both sides of the second through opening at least along the first direction. One of the corresponding carrier plate part and the upper stage on both sides of the second through opening is provided with at least two through oblong holes extending in the second direction and the other is provided with at least two through circular holes, thereby allowing the first detection unit to be adjustably mounted on the corresponding carrier plate of the frame along the second direction.

[0019] Advantageously, the upper stage extends upward near the detection hole on the inner side along the second direction to form a second convex portion, and the corresponding carrier is provided with a second convex block erected from its upper surface on the inner side along the second direction adjacent to the second through opening. The second convex portion and the second convex block are configured to allow one or more gaskets to be arranged between them along the second direction to further adjustably mount the first detection unit on the corresponding carrier of the frame along the second direction.

[0020] Advantageously, the second through opening is in an elliptical shape elongated along the second direction, so that the first cylindrical body of the first detection unit is received therein with a gap along the second direction.

[0021] Advantageously, the other of the other two units is opposite to the auxiliary positioning unit in the second direction, is called the second detection unit, and is configured to be adjustably mounted on a corresponding carrier plate of the frame in the first direction and / or in the second direction relative to the reference positioning unit.

[0022] Advantageously, the second detection unit comprises: a second cylindrical body with a corresponding detection hole formed therein, configured to be completely received in a third through opening specially provided in the corresponding carrier plate in a circumferentially gapped manner and vertically; and an upper plate surrounding the second cylindrical body at the upper portion of the second cylindrical body. One of the corresponding carrier plate portion on both sides of the third through opening and the upper plate is provided with at least two through oblong holes extending in the first direction and the other is provided with at least two through circular holes, thereby allowing the second detection unit to be adjustably mounted on the upper surface of the corresponding carrier plate of the frame in the first direction.

[0023] Advantageously, the upper plate extends upward near the corresponding detection hole at the inner side along the second direction to form a third convex portion, and the corresponding carrier plate is provided with a third convex block erected from its upper surface at the inner side along the second direction adjacent to the third through opening. The third convex portion and the third convex block are configured to allow one or more gaskets to be arranged between them along the second direction so that the second detection unit can be adjustably mounted on the corresponding carrier plate of the frame along the second direction.

[0024] Advantageously, the second detection unit is in the form of two separate components. The two components are configured such that the first component includes the second cylindrical body and a first plate partially surrounding the upper portion of the second cylindrical body, and the second component includes a second plate and a third protrusion for receiving the opening of the second cylindrical body of the first component. The first component and the second component are arranged such that by stacking the first plate and the second plate while allowing the second cylindrical body to pass through the opening, a second detection unit with two through oblong holes extending in the first direction is formed, and correspondingly, two through circular holes are provided on the corresponding carrier plate portions on both sides of the third through opening.

[0025] Advantageously, the third through-opening is a circular opening having an inner diameter greater than an outer diameter of the second cylindrical body, so that the second cylindrical body is received in the third through-opening with a gap in the circumferential direction.

[0026] Advantageously, the wall thickness of the lower body of the reference positioning unit is greater than the wall thickness of the corresponding upper body.

[0027] Advantageously, the wall thickness of the lower body of the auxiliary positioning unit is greater than the wall thickness of the corresponding upper body.

[0028] Advantageously, the frame is rectangular. Advantageously, the gauge is also provided with a handle for an operator to hold.

[0029] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] By reading the detailed description of the embodiments given in a non-limiting manner in conjunction with the accompanying drawings below, other objects, features, details and advantages of the present application will be more clearly reflected. The accompanying drawings are only for the purpose of illustrating preferred embodiments and are not considered to be limitations of the present application. In addition, the various features of the drawings discussed below are not necessarily drawn to scale. The sizes of the various features and elements in the drawings may be enlarged or reduced to more clearly illustrate the embodiments of the present application. Moreover, in all drawings, the same reference numerals refer to similar or identical elements throughout the drawings and their descriptions. In the drawings:

[0031] Figure 1 The figure is an overall three-dimensional diagram of a check fixture for checking front seat mounting points on a vehicle body according to an embodiment of the present application, viewed from the upper side.

[0032] Figure 2 yes Figure 1 The overall stereogram of the inspection fixture shown but turned upside down.

[0033] Figure 3 yes Figure 1-2 A top plan view of the gauge shown.

[0034] Figure 4 Schematically shows that the Figure 1-3 The inspection fixture is used to inspect the mounting holes (i.e., mounting points) on the mounting bracket on the front seat mounting crossbeam inside the vehicle body.

[0035] Figure 5 yes Figure 1-3 A top, partially exploded plan view of the gauge shown.

[0036] Figure 6 yes Figure 1-3 5 is a perspective view of a separate reference positioning unit of the gauge shown in FIG. 5 as viewed from the side below.

[0037] Figure 7 yes Figure 6 A transparent plan view of the interior of the reference positioning unit in the direction of the lug.

[0038] Figure 8 yes Figure 1-3 5 is a side perspective view of the entirety of the individual auxiliary positioning unit of the inspection fixture after being turned upside down.

[0039] Fig. 9 yes Figure 8 A bottom-up stereogram of the auxiliary positioning unit from another angle.

[0040] Fig.10 and Fig.11 They are Figure 1-3 5 is an overall perspective view and a plan view from below of a separate first detection unit of the inspection fixture shown in FIG.

[0041] Fig.12 and Fig.13 They are respectively composed Figure 1-3 5 is an overall perspective view of two separated components of the separate second detection unit of the inspection fixture shown in FIG. DETAILED DESCRIPTION

[0042] Each illustrative embodiment of the present application is described below. In this specification, for the sake of explanation only, each system, structure and device are schematically depicted in the accompanying drawings, but all features of the actual system, structure and device are not described, such as well-known functions or structures are not described in detail, to avoid unnecessary details that make the present application unclear. Of course, it should be understood that in any practical application, many specific implementation decisions need to be made to achieve the specific goals of the developer or user, and it is necessary to comply with system-related and industry-related restrictions, and these specific goals may vary with the actual application. In addition, it should be understood that although such specific implementation decisions are complex and time-consuming, this is a routine task for those of ordinary skill in the art who benefit from the present application.

[0043] The terms and phrases used herein should be understood and interpreted as having a meaning consistent with the understanding of such terms and phrases by those skilled in the relevant art. Consistent usage of a term or phrase herein is not intended to imply a special definition of the term or phrase, i.e., a definition that is different from the ordinary and customary meaning as understood by those skilled in the art. For terms or phrases that are intended to have a special meaning, i.e., a meaning that is different from that understood by those skilled in the art, such special definition will be explicitly listed in the specification as a definition, directly and unambiguously giving the special definition of the term or phrase.

[0044] Unless required by content, throughout the following description and claims, the word "include" and variations such as "comprises" are to be interpreted in an open, inclusive sense, that is, as "including but not limited to."

[0045] Throughout the description of this specification, reference to the terms "an embodiment", "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Thus, the phrases "in one embodiment" or "in an embodiment" appearing in different places throughout this specification do not necessarily all refer to the same embodiment. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0046] As used in this specification and the appended claims, the indefinite articles "a" and "an" in the singular and the definite articles "the" include one or more referents unless expressly specified and limited otherwise. It should also be noted that the term "or" generally includes "and / or" in its meaning, unless expressly specified and limited otherwise. For the purposes of this description, a phrase in the form of "A or B" means "(A), (B) or (A and B)". For the purposes of this description, a phrase in the form of "at least one of A, B or C" means "(A), (B), (C), (A and B), (A and C), (B and C) or (A, B and C)". In addition, the character " / " in this document generally indicates that the objects before and after are in an "or" relationship.

[0047] In the description of the embodiments of the present application, the terms "first", "second", etc. are only used to distinguish different objects and shall not be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary and secondary relationship of the indicated technical features.

[0048] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

[0049] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" 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 application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0050] In this application, unless otherwise clearly specified and limited, the terms "install", "connect", "couple", "connect", "fix" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0051] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0052] First of all, it should be noted that the inspection fixture according to the present application is formulated by simulating the way the front seat is installed in the vehicle assembly and according to the body FMK (body dimension chain) system construction principle. The detection holes on the inspection fixture are simulated based on the theoretical mounting holes on the front seat for mounting the front seat in accordance with the front seat mounting points, i.e., mounting holes, on the body. In other words, the detection holes on the inspection fixture are configured to be consistent with the theoretical mounting holes on the front seat in position, shape and size. The inspection fixture according to the present application is also adjustable, which at least allows tolerance reserves to be set in consideration of manufacturing tolerances. But more broadly, even when necessary, it can be adjusted according to different types of vehicle front seats. This will be explained in detail below.

[0053] To this end, the present application proposes a check fixture for front seat mounting points on a vehicle body, which is used to detect vehicle body mounting points for mounting front seats on the vehicle body. The check fixture includes, for example, a rectangular frame. The frame is, for example, welded from aluminum profiles.

[0054] For multiple front seat mounting points on the vehicle body, corresponding multiple units are usually installed on the frame, and each of the multiple units is provided with a detection hole. The detection hole is constructed as described above to be consistent in position, shape and size with the hole on the front seat used to cooperate with the corresponding mounting hole to install the front seat, so that during detection, the detection hole can be located around the corresponding mounting point, allowing the corresponding mounting point below to be at least partially observed through the detection hole.

[0055] Advantageously, at least two of the plurality of units are further integrated with a positioning device, which is configured to be coaxially aligned with the corresponding detection hole, so that during detection, the corresponding detection hole is centered and positioned around the corresponding installation point by the positioning device, so as to detect whether the detection holes of the remaining units block the installation point below. If the detection hole does not block the installation point below, it means that its position is appropriate, otherwise it means that the positioning of the front seat installation point on the vehicle body is deviated, so that the staff can provide timely feedback to deal with the problem, avoiding the waste of time and economic losses caused by the delivery of non-compliant vehicle bodies to the final assembly.

[0056] The following is an exemplary description of the detection of four main mounting points on a vehicle body for mounting a front seat by using a test fixture according to the present application.

[0057] As an example, Figures 1 to 3 Detailed description is given of a check fixture 1 for checking front seat mounting points on a vehicle body according to an embodiment of the present application.

[0058] Advantageously, the inspection tool may be provided with a handle on its frame 3 for an operator to hold, for example Figure 1-3 And the handle 4 shown in 5. In this way, the operator can simply hold the inspection tool to detect the installation points on the vehicle body during work to quickly identify and determine whether the vehicle with problems can be delivered for final assembly.

[0059] See also Figure 1 The handle 4 can be disposed, for example, between a pair of units 11 , 12 and another pair of units 13 , 14 that are opposite to each other in the longitudinal direction L, specifically, between two cross beams of the rectangular frame on the frame 3 .

[0060] Generally, for each front seat, the mounting points on the vehicle body mainly include four mounting holes. Figure 4 The four mounting holes (ie mounting points) 21, 22, 23 and 24 on the mounting bracket on the front seat mounting crossbeam in the vehicle body are shown very schematically.

[0061] like Figure 4As shown, here, the four mounting holes 21-24 are: two planar mounting holes 21, 22, which are located on the inner side relative to the width direction of the vehicle body, and relative to the length direction of the vehicle body, one of the mounting holes 21 faces forward and close to the front of the vehicle, called the front inner planar mounting hole, and the other mounting hole 22 faces backward and away from the front of the vehicle, called the rear inner planar mounting hole; and two boss-shaped mounting holes 23, 24, which protrude relative to the two planar mounting holes 21, 22, and the two boss-shaped mounting holes 23, 24 are located on the outer side relative to the width direction of the vehicle body, and relative to the length direction of the vehicle body, one mounting hole 23 faces forward and close to the front of the vehicle, called the front outer boss-shaped mounting hole, and the other mounting hole 24 faces backward and away from the front of the vehicle, called the rear outer boss-shaped mounting hole. From Figure 4 As can be seen in the figure, the cylindrical wall surrounds the mounting holes 23, 24 and has a boss for positioning the subsequent inspection tool.

[0062] It is further pointed out here that the length direction of the vehicle body is also called the longitudinal direction L. As described later, when the gauge is tested, it corresponds to the first direction relative to the gauge 1, based on which the front (part, side, etc.) and rear (part, side, etc.) are defined; the width direction of the vehicle body is also called the transverse direction T. As described later, when the gauge is tested, it corresponds to the second direction relative to the gauge, based on which the inside (part, side, etc.) and outside (part, side, etc.) are defined; the direction perpendicular to the longitudinal direction L and the transverse direction T is called the vertical direction. For clear description, the relevant coordinate system (L, V, T) is marked on the relevant diagram, where the arrows indicate the front (part, side, etc.) relative to the longitudinal direction L, the top (part, side, etc.) relative to the vertical direction V, and the inside (part, side, etc.) relative to the transverse direction T.

[0063] like Figure 1-3 As shown, for the four mounting holes 21-24 on the vehicle body, here, for example, a rectangular frame 3 is correspondingly mounted with four units 11, 12, 13 and 14 at the outer sides of its four corners, wherein each unit is provided with a detection hole 111, 121, 131, 141 (see Figure 2 As mentioned above, these detection holes are configured to be consistent in shape and size with the holes on the front seat for matching the corresponding mounting holes 21-24 to mount the front seat, so that during the inspection, these detection holes on the inspection fixture 1 can be respectively located on the mounting holes 21-24 so that the corresponding mounting holes below can be at least partially observed from above through the detection holes.

[0064] Advantageously, two of the four units 13, 14 are integrated with positioning devices. The positioning devices are configured to be coaxially aligned with the corresponding detection holes 131, 141, so that during detection, the corresponding detection holes 131, 141 are centered and positioned around the corresponding mounting holes 23, 24 by the positioning devices, so as to detect whether the detection holes 111, 121 of the other two units 11, 12 cover the mounting holes 21, 22 below them.

[0065] As an example, the four units 11-14 can be mounted on the frame 3 by means of carrier plates 31, 32, 33, 34 fixedly connected to, advantageously welded to, the outer sides of the four corners of the frame. The carrier plates are machined parts here. Of course, other similar methods are also conceivable.

[0066] Advantageously, the two positioning means integrated into the two units 13, 14 are each in the form of a positioning sleeve 132, 142, protruding from the lower side relative to the frame 3. Specifically, the positioning sleeves 132, 142 protrude from the lower surface of the corresponding carrier plate 33, 34, as shown in FIG. Figure 2 As shown. The positioning sleeves 132, 142 are configured to be respectively clamped on the two boss-shaped mounting holes 23, 24 during detection to position the gauge 1. In particular, during detection, the positioning sleeves 132, 142 are respectively clamped on the outer peripheral walls, such as cylindrical, of the front and rear outer boss-shaped mounting holes 23, 24 through their inner walls, such as cylindrical, so that since the positioning sleeves extend coaxially with the corresponding detection holes in vertical alignment, the corresponding detection holes 131, 141 on the gauge 1 are centered relative to the mounting holes 23, 24 below them and the gauge 1 is positioned.

[0067] It should be noted here that setting one positioning sleeve may result in the risk of poor positioning and possible displacement, while setting two positioning sleeves can ensure that the inspection fixture is well positioned.

[0068] Continue to see Figure 2 It can be seen that, in contrast to the two units 13 and 14, the other two units 11 and 12 are flush with the frame on the lower side, that is, they do not protrude relative to the lower surface of the corresponding carrier plates 31 and 32, so that during inspection, the two units can be placed flat around the two planar mounting holes 21 and 22 through their inspection holes 111 and 121. As mentioned above, if the mounting holes 21 and 22 below can be fully seen from the top of the inspection fixture through the inspection holes, it means that the front seat mounting point on the vehicle body is properly positioned; conversely, if the inspection holes 111 and 121 at least partially block the mounting holes 21 and 22 below, it means that the positioning of the front seat mounting point on the vehicle body is deviated. This makes it possible to quickly identify and determine whether the problematic vehicle body can be delivered to the final assembly.

[0069] In addition, as mentioned above, according to the gauge 1 of the present application, manufacturing tolerances are taken into consideration and tolerance reserves are provided. One or more of the four units of the gauge, such as 11, 12, 14, can be adjustably mounted to the frame 3, specifically, its carrier plate along a first direction corresponding to the longitudinal direction L of the vehicle body length direction and / or along a second direction corresponding to the transverse direction T of the vehicle body width direction. This will be reflected in the detailed description of each unit below.

[0070] Figure 5A partial exploded view of the gauge 1 excluding the handle 4 is shown in a top plan view, wherein the units 11 to 14 detached from the corresponding carrier plate can be seen.

[0071] For example, see Figure 1-3 The unit 13 with the positioning sleeve 132 integrated here, preferably integrated in one piece, is mounted on the frame 3, here its carrier plate 33, in a non-adjustable manner relative to the frame. This unit 13 is called the reference positioning unit, and its positioning sleeve 132 is then called the main positioning sleeve.

[0072] The reference positioning unit 13 is preferably in one piece. Figure 6 It can be seen that the reference positioning unit 13 includes a main body 13A with a cylindrical shape, an annular inner shoulder 133 radially protrudes inward from the inner wall of the main body and forms a detection hole 131 at its center, as shown in FIG. Figure 5-6 The inner shoulder 133 then separates the cylindrical interior of the main body, thereby forming an upper main body and a lower main body connected vertically by the detection hole 131 , and the lower main body constitutes the main positioning sleeve 132 .

[0073] Still see Figure 5-7 The reference positioning unit 13 may be provided with a fixing protrusion on the upper edge of the cylindrical body. Specifically, for example, the unit 13 may be provided with an annular flange on the upper edge of the body; advantageously, two lugs 134, 135 may continue to extend radially outward from the flange. The reference positioning unit 13 is fixed to the upper surface of the carrier plate 33 in an unadjustable manner relative to the frame 3, for example, by screws, using the flange and / or lugs. Figure 5 It can also be seen that a through opening 331, which is circular in this case, is provided in the carrier plate 33. Here, the through opening 331 and the main body 13A are sized so that when the unit 13 is fixed on the carrier plate 33, its main body 13A passes through the through circular opening 331 in a circumferentially gapless manner, and the lower body constituting the main positioning sleeve 132 protrudes relative to the lower surface of the carrier plate 33, see Figure 2 .

[0074] Here, for example, to fix the unit 13 to the carrier 33, two lugs 134, 135 are arranged on both sides of the through circular opening 331 along the second direction, i.e., the transverse direction T, and fastened by, for example, screws passing through lugs having a size adapted to their outer diameter and aligned circular holes on the carrier. Of course, other fixing methods may also be used.

[0075] See also Figure 7, the figure shows the internal structure of the unit 13 along the two lug directions in a transparent plane manner that allows the interior of the unit 13 to be seen. It can be further more clearly seen from the figure that the upper body of the main body 13A and the lower body constituting the main positioning sleeve 132 have different wall thicknesses, and the wall of the lower body is thicker than the wall of the upper body, so that the cylindrical internal space of the lower body, that is, its inner diameter, matches the outer diameter of the cylindrical outer peripheral wall surrounding the front outer boss-shaped mounting hole 23, so that during detection, the sleeve 132 of the unit 13 is matched around the cylindrical outer peripheral wall of the front outer boss-shaped mounting hole 23, thereby aligning and centering the detection hole 131 with the mounting hole 23 below.

[0076] Of course, other methods that can achieve the same or similar functions as described above are also conceivable.

[0077] Another unit, namely, unit 14, which is integrated with a positioning sleeve, will be described below with reference to the relevant drawings.

[0078] Unit 14 is configured to be adjustably mounted on a carrier plate 34 of frame 3 relative to reference positioning unit 13, i.e., relative to frame 3 along a first direction corresponding to longitudinal direction L, and its positioning sleeve 142 protrudes from the lower surface of carrier plate 34 (see Figure 2 ), so that during the inspection, the cylindrical inner wall of the positioning sleeve is matched and clamped on the cylindrical outer wall of the rear outer boss-shaped mounting hole 24. This unit 14 is called an auxiliary positioning unit, and its positioning sleeve 142 is called a secondary positioning sleeve. As mentioned above, the cooperation of the secondary positioning sleeve 142 and the main positioning sleeve 132 is sufficient to position the inspection fixture 1 well.

[0079] The auxiliary positioning unit 14 is preferably in an integrated form. Figure 8 and Fig. 9 It can be seen that the unit 14 includes a main cylinder 14A. The main cylinder is internally constructed similarly to the interior of the main body of the unit 13, that is, the cylindrical interior is divided into an upper body and a lower body constituting the auxiliary positioning sleeve 142 by an inner shoulder 143 with a detection hole 141 formed in the center. Similar to the unit 13, two ears 144 and 145 are also provided on the upper part of the main cylinder in radially opposite directions. Figure 1 , 3 As shown in FIG. 5 , the two ears are arranged on the upper surface of the carrier plate 34 at both sides of the through opening 341 provided in the carrier plate 34 along the second direction, ie, the transverse direction T, and are used to mount the unit 14 on the frame.

[0080] To allow the unit 14 to be adjustably mounted on the carrier plate 34 of the frame 3 in a first direction, i.e., longitudinal direction L, relative to the unit 13, as shown in FIG. Figure 5As shown, the two ears 144, 145 are provided with a plurality of, here two, through circular holes, and the corresponding through opening 341 is provided with a plurality of, here two, through oblong holes extending along the longitudinal direction L on both sides. Of course, the reverse arrangement is also possible.

[0081] The main cylinder 14A of the unit 14 and the through opening 341 are also configured such that the main cylinder passes through the through opening 341 with a gap at least in the first direction, ie, the longitudinal direction L.

[0082] For this purpose, for example, the main cylinder 14A is configured to be flat at least on the rear side, here both the front and rear sides, along the longitudinal direction L, and the front and rear two plane portions of the main cylinder are connected to the left and right arc portions, such as Figure 2 , 8 -9. The through opening 341 of the carrier plate 34 is shaped accordingly, for example, it is straight-line-shaped on both sides along the longitudinal direction L, see Figure 5 Thus, the main cylinder 14A of the auxiliary positioning unit 14 can pass through the through opening 341 with a gap at least along the longitudinal direction L.

[0083] In addition, similar to the unit 13, the wall thickness of the lower body constituting the auxiliary positioning sleeve 142 is greater than the wall thickness of the upper body. Figure 1 and Figure 8 As shown, the plane of the main cylinder body on the front side along the longitudinal direction L is designed so that the upper body forms a U-shaped opening, while the lower body, i.e., the auxiliary positioning sleeve used for cooperating with the mounting hole 24 for positioning, is not affected and still maintains a cylindrical internal space.

[0084] In addition, see Figure 1 , 3 5, the planar main cylinder portion of at least the rear side of the integrated unit 14 along the longitudinal direction L extends upward near the detection hole 141 between the two ears to form a convex portion 146. The convex portion 146 is planar at the rear side along the longitudinal direction L, and is, for example, arc-shaped at the front side along the longitudinal direction L, continuing the rear inner wall of the upper body, such as Figure 1 , 3 and 5. Accordingly, still refer to Figure 1 , 3 5, the carrier plate 34 is provided with a protrusion 342 erected from its upper surface at the rear side adjacent to the through opening 341 along the longitudinal direction L. If necessary, one or more gaskets can be arranged between the mutually facing flat surfaces of the protrusion 146 and the protrusion 342 along the longitudinal direction L to further adjustably mount the auxiliary positioning unit 14 on the carrier plate 34 of the frame 3 along the longitudinal direction L. Of course, such gaskets are not necessary and can be used or not according to actual conditions.

[0085] Back to Figure 1-3It can be seen that the other two units 11 and 12 are opposite to the units 13 and 14 along the second direction, i.e., the transverse direction T. As mentioned above, during the inspection, when the inspection fixture 1 is centered and positioned on the front outer boss-shaped mounting hole 23 and the rear outer boss-shaped mounting hole 24 respectively by means of the two positioning units 13 and 14, the inspection fixture uses the units 13 and 14 placed flat around the two planar mounting holes 21 and 22 to detect whether the front seat mounting points on the vehicle body are properly positioned based on whether the detection holes 111 and 121 of the units 13 and 14 block the mounting holes 21 and 22 below. Therefore, these two units 11 and 12 are inspection units.

[0086] Specifically, the unit 11 is opposite to the reference positioning unit 13 along the transverse direction T. During detection, it cooperates with the front inner planar mounting hole 21, and the unit 11 is then called the first detection unit. The unit 11 is configured to be adjustably mounted on the carrier plate 31 of the frame 3 along the transverse direction T relative to the reference positioning unit 13. The unit 12 is opposite to the auxiliary positioning unit 14 along the transverse direction T, and is called the second detection unit, which is configured to be adjustably mounted on the carrier plate 32 of the frame 3 along the longitudinal direction L and / or the transverse direction T relative to the reference positioning unit 13. Preferably, considering that the unit 12 is the farthest relative to the diagonally arranged reference positioning unit 3, the unit 12 can be configured to be adjustably mounted on the carrier plate 32 of the frame 3 along the longitudinal direction L and along the transverse direction T relative to the reference positioning unit 13.

[0087] The first detection unit 11 is also in one piece. Similar to the unit 13, it also includes a cylindrical body 11A with a detection hole 111 formed inside through an inner shoulder. Figure 10-11 Here, the detection hole 111 is similar in shape to the detection hole 121 of the unit 13, both of which are square with rounded corners. Of course, as mentioned above, the shape of the detection hole simulates the shape of the theoretical hole on the front seat that is installed in coordination with the mounting hole on the vehicle body. However, unlike the units 13 and 14, the cylindrical body 11A of the first detection unit 11 is vertically completely received in the specially provided Figure 5 The through opening 311 in the carrier plate 31 shown in FIG. 1 is flush with the lower surface of the carrier plate 31 , in other words, it does not protrude from the lower surface. Figure 2 shown.

[0088] The first detection unit 11 is similarly constructed as the unit 14 at the upper part of the cylindrical body 11A. The upper part of the cylindrical body 11A is provided with an upper stage 11B partially surrounding the cylindrical body 11A. Here, the upper stage 11B surrounds the cylindrical body 11A for example, approximately three quarters of the circle, and is arranged to be arranged on the upper surface of the carrier 31 at least on both sides of the through opening 311 along the longitudinal direction L, and the main body part not covered by the upper stage 11B is arranged to face the unit 13 along the transverse direction T.

[0089] In order to adjustably mount the first detection unit 11 on the carrier plate 31 of the frame along the transverse direction T, the carrier plate parts on both sides of the through opening 311 can be provided with multiple, here two, through oblong holes extending along the transverse direction T, and the corresponding upper platform is provided with multiple, here two through circular holes. Of course, the reverse arrangement is also possible. In addition, the cylindrical body 11A and the through opening 311 receiving it are also configured so that the body is completely received in the opening 311 with a gap at least along the transverse direction T. For this purpose, for example, Figure 5 As shown, the through opening 311 is in an elliptical shape elongated along the transverse direction T. In addition, the upper stage extends upward near the detection hole 111 on the inner side along the transverse direction T to form a convex portion 11C. Correspondingly, the carrier 31 is provided with a convex block 312 erected from its upper surface on the inner side along the transverse direction T near the through opening 311. The convex portion 11C and the convex block 312 are configured to allow one or more gaskets to be arranged between them, specifically between their facing flat surfaces, along the transverse direction T to further adjustably mount the first detection unit 11 on the carrier 31 of the frame 3 along the transverse direction T. This arrangement is also similar to the unit 14. For specific details, please refer to the previous description of the unit 14, which will not be repeated here.

[0090] Next, the second detection unit 12 will be described.

[0091] Similar to the first detection unit 11, the second detection unit 12 includes a cylindrical body 124 with a detection hole 121 formed therein (see Fig.12 ), the cylindrical body is also vertically completely received in the through opening 321 specially provided in the carrier plate 32, and does not protrude from the lower surface of the carrier plate 32, such as Figure 2 However, unlike the unit 11, the detection hole 121 is circular, and the through opening 321 is also circular. In addition, the inner diameter of the through opening 321 is larger than the outer diameter of the cylindrical body of the second detection unit 12, so that the body is accommodated in the opening 321 with a gap in the circumferential direction. This is also from Figure 2 It can be seen in.

[0092] Similarly, the second detection unit 12 also includes an upper plate 122 (such as Figure 1 and 3 As shown in FIG. 1 , the upper plate surrounds the cylindrical body 124 at the upper part thereof, and one of the corresponding carrier plate parts and the upper plate on both sides of the through opening 321, for example, the upper plate, is provided with a plurality of, here two, through oblong holes extending in the longitudinal direction L, and the other, for example, the corresponding carrier plate part is provided with a plurality of, here two through circular holes, thereby allowing the second detection unit 12 to be adjustably mounted on the upper surface of the carrier plate 32 of the frame in the longitudinal direction L.

[0093] Similar to the unit 11, the upper plate 122 extends upward near the detection hole 121 along the inner side of the transverse direction T to form a convex portion 123; correspondingly, the carrier plate 32 is provided with a convex block 322 erected from its upper surface at the inner side of the transverse direction T near the through opening 321, and the convex portion 123 and the convex block 322 are configured so that when necessary, one or more gaskets can be arranged between the flat surfaces facing them along the transverse direction T, so as to allow the second detection unit 12 to be adjustable along the transverse direction T. The specific details of these settings can be found in the above description of the units 11 and 14, and will not be repeated here.

[0094] However, unlike the previous units, especially the units 11 and 14, the second detection unit 12 can be preferably constructed in the form of two separate components. Figure 5 The separated components 122A and 122B are shown. Figure 12-13 .

[0095] One of the two elements, here the first element 122A, is configured to be similar in appearance to the Fig.10 The unit 11 shown is similar in shape except for the protrusion 11C, that is, it carries the cylindrical body 124 and, for example, a first plate 125 that surrounds the upper part of the cylindrical body 124 by approximately three quarters of the circle, and another element, here a second element 122B, includes a second plate 126 provided with an opening 127 for receiving the cylindrical body 124. The protrusion 123 is formed on the element 122B in a manner similar to the protrusion of the unit 11. The two elements 122A and 122B are constructed by stacking the first plate 125 and the second plate 126 while allowing the cylindrical body 124 to pass through the opening 127, so as to form a structure as shown in FIG. Figure 1 and 3 The second detection unit 12 is shown.

[0096] In this case, it can be seen that two sub-oblong holes 122B1 extending along the protrusion, i.e., along the longitudinal direction L, are provided on the second element 122B near the protrusion 123, and two sub-oblong holes 122A1 are correspondingly provided on the first element 122A. The two oblong holes 122A1 are completely overlapped with the two sub-oblong holes 122B1 by stacking the two flat plates 125 and 126, thereby forming two oblong holes in the upper plate in the aforementioned sense, which cooperate with the two circular holes on both sides of the through opening 321 of the carrier plate 32, so as to achieve that the unit 12 composed of the first element 122A and the second element 122B can be adjustably mounted on the frame along the longitudinal direction L.

[0097] The unit 12 is configured such that it is furthest away from the diagonally arranged reference positioning unit 13 in order to further increase the adjustability in terms of position in the longitudinal direction L and in the transverse direction T relative to the reference positioning unit 13 .

[0098] By means of the structure of the inspection fixture according to the present application as described above, the theoretical hole positions of the front seat can be installed according to the matching of the mounting holes 21-24 on the vehicle body, and the corresponding detection hole positions on the inspection fixture can be accurately positioned in an adjustable manner, thereby allowing the mounting holes on the vehicle body, such as holes 21-24, to be accurately inspected.

[0099] When performing the test, the operator only needs to hold the handle 4 and insert the positioning sleeves 132 and 142 of the units 13 and 14 of the test fixture 1 into the positions shown in FIG. Figure 4 The jig 1 is positioned on the boss-shaped mounting holes 23, 24 facing outward relative to the vehicle body as shown, and then the other two units 11, 12 are allowed to rest on the carrier plates 31, 32 around the two planar mounting holes 21, 22 facing inward relative to the vehicle body. The operator then visually observes downward from the detection holes 111, 121 of the units 11, 12. If the mounting holes 21, 22 below are not blocked by the detection holes 111, 121, it means that the front seat mounting points on the vehicle body are properly positioned and the vehicle body can be delivered for final assembly. On the contrary, if the mounting holes 21, 22 are at least partially blocked by the detection holes 111, 121, the vehicle body may not be delivered for final assembly, and the operator will feedback the problem for processing. Therefore, with the aid of the jig according to the present application, the positioning status of the front seat mounting points can be quickly verified, and it is also possible to quickly identify and determine whether the deviated vehicle affects the subsequent processes.

[0100] Because this inspection fixture is easy to operate, it can even 100% inspect the body condition of each body to be delivered if necessary.

[0101] It should also be noted that the present application may include any feature or feature combination or generalization disclosed herein, whether implicitly or explicitly, without being limited to any of the above-listed limited ranges. Any of the elements, features and / or structural arrangements described herein may be combined in any suitable manner.

[0102] The specific embodiments disclosed above are exemplary only, and it will be apparent to those skilled in the art who have the benefit of the teachings herein that the present application may be modified and implemented in different but equivalent ways. For example, the above method steps may be performed in a different order. In addition, the details of the construction or design shown herein are not limited except as described in the following claims. It is therefore apparent that the specific embodiments disclosed above may be changed and modified, and all such variations are considered to fall within the scope and spirit of the present application. Therefore, the protection sought herein is set forth in the appended claims.

Claims

1. A check fixture for front seat mounting points on a vehicle body, the check fixture comprising a frame, characterized in that: For multiple front seat mounting points, multiple units are correspondingly installed on the frame, and each of the multiple units is provided with a detection hole, which is configured to be located around the corresponding front seat mounting point during detection; and at least two of the multiple units are also integrated with a positioning device, which is configured to be coaxially aligned with the corresponding detection hole, so that during detection, the corresponding detection hole is centered and positioned around the corresponding front seat mounting point by the positioning device, so as to perform detection by determining whether the detection holes of the remaining units block the front seat mounting point below them.

2. The inspection tool according to claim 1, characterized in that: One of the at least two units integrated with the positioning device is configured to be mounted on the frame non-adjustably relative to the frame, while the remaining units are configured to be mounted on the frame adjustably along a first direction and / or a second direction relative to the one unit, wherein the first direction corresponds to a direction along the length of the vehicle body during detection, and the second direction is orthogonal to the first direction and corresponds to a direction along the width of the vehicle body during detection.

3. The inspection tool according to claim 2, characterized in that: For each front seat, the front seat mounting point includes four mounting holes on the vehicle body; for the four mounting holes, the frame is correspondingly mounted with four units at its four corners, and two of the four units are respectively integrated with the positioning device.

4. The inspection tool according to claim 3, characterized in that: The four mounting holes are: two planar mounting holes, relative to the width direction of the vehicle body, the two planar mounting holes are located on the inner side, relative to the length direction of the vehicle body, one of the planar mounting holes faces forward close to the front of the vehicle and the other planar mounting hole faces rearward away from the front of the vehicle; and two boss-shaped mounting holes protrude relative to the two planar mounting holes, relative to the width direction of the vehicle body, the two boss-shaped mounting holes are located on the outer side, relative to the length direction of the vehicle body, one of the boss-shaped mounting holes faces forward close to the front of the vehicle, called the front outer boss-shaped mounting hole, and the other boss-shaped mounting hole faces rearward away from the front of the vehicle, called the rear outer boss-shaped mounting hole; wherein, the two positioning devices integrated in the two units are each in the form of a positioning sleeve, protruding at the lower side relative to the frame, and are configured to be respectively covered on the two boss-shaped mounting holes to position the inspection fixture during detection, while the other two units are flush at the lower side relative to the frame, so as to be placed flatly around the two planar mounting holes through their detection holes during detection.

5. The inspection tool according to claim 4, characterized in that: The four units are respectively installed on the frame through carrier plates fixedly connected to the outer sides of the four corners of the frame.

6. The gauge as claimed in claim 5, characterized in that: One of the two units integrated with a positioning sleeve is constructed to be non-adjustably mounted on the corresponding carrier plate of the frame relative to the frame, and its positioning sleeve protrudes from the lower surface of the corresponding carrier plate so that during detection, the cylindrical inner wall of its positioning sleeve can be matched and clamped on the cylindrical outer wall of the front outer boss-shaped mounting hole. This unit is called a reference positioning unit, and its positioning sleeve is called a main positioning sleeve.

7. The gauge according to claim 6, characterized in that: The reference positioning unit is in an integral shape and comprises: a main body with a cylindrical shape, which is configured to pass through a specially provided through circular opening on the corresponding carrier plate in a circumferentially gapless manner, and the main body is separated by an inner shoulder with a corresponding detection hole formed in the center inside its cylindrical shape, thereby forming an upper main body and a lower main body connected on the inner side through the corresponding detection hole, and the lower main body constitutes the main positioning sleeve; a fixing protrusion, which at least partially extends radially outward on the upper edge of the cylinder, so that the reference positioning unit is fastened to the upper surface of the corresponding carrier plate through the fixing protrusion in a non-adjustable manner relative to the frame.

8. The gauge according to claim 6, characterized in that: The other of the two units integrated with the positioning sleeve is constructed to be adjustably mounted on the corresponding carrier plate of the frame along the first direction relative to the reference positioning unit, and its positioning sleeve protrudes from the lower surface of the corresponding carrier plate, so that during detection, the cylindrical inner wall of its positioning sleeve can be matched and clamped on the cylindrical outer wall of the rear outer boss-shaped mounting hole. The other unit is called an auxiliary positioning unit, and its positioning sleeve is called a secondary positioning sleeve.

9. The gauge as claimed in claim 8, characterized in that: The auxiliary positioning unit is in an integral shape and comprises: a main cylinder body, inside which is divided into an upper main body and a lower main body constituting the auxiliary positioning sleeve by an inner shoulder with a corresponding detection hole formed in the center; two ears, which are radially opposite to each other at the upper part of the main cylinder body and are arranged on the upper surface of the corresponding carrier plate on both sides of a first through opening provided in the corresponding carrier plate along the second direction, one of the two ears and both sides of the first through opening is provided with at least two through oblong holes extending along the first direction and the other is provided with at least two through circular holes, and the main cylinder body and the first through opening are constructed so that the main cylinder body passes through the first through opening with a gap at least along the first direction, thereby allowing the auxiliary positioning unit to be adjustably mounted on the corresponding carrier plate of the frame along the first direction.

10. The gauge according to claim 9, characterized in that: The main cylinder extends upward near the detection hole at least between the two ears on the rear side along the first direction to form a first convex portion, and the corresponding carrier is provided with a first protrusion erected from its upper surface adjacent to the first through opening on the rear side along the first direction. The first convex portion and the first protrusion are configured to allow one or more gaskets to be arranged between them along the first direction so as to further adjustably mount the auxiliary positioning unit on the corresponding carrier of the frame along the first direction.

11. The gauge according to claim 9, characterized in that: The first through opening is linear on both sides along the first direction, and the main cylinder of the auxiliary positioning unit is correspondingly constructed to be planar on both sides along the first direction, so that the main cylinder of the auxiliary positioning unit passes through the first through opening with a gap along the first direction.

12. The gauge according to claim 8, characterized in that: One of the other two units is opposite to the reference positioning unit along the second direction, is called the first detection unit, and is configured to be adjustably mounted on a corresponding carrier plate of the frame along the second direction relative to the reference positioning unit.

13. The gauge according to claim 12, characterized in that: The first detection unit is in an integral shape and includes: a first cylindrical body with a corresponding detection hole formed therein, which is configured to be completely received vertically in a second through opening specially provided in the corresponding carrier plate with a gap at least along the second direction; an upper platform, which partially surrounds the first cylindrical body at the upper part of the first cylindrical body and is configured to be arranged on the upper surface of the corresponding carrier plate on both sides of the second through opening at least along the first direction, one of the corresponding carrier plate parts and the upper platform on both sides of the second through opening is provided with at least two through oblong holes extending along the second direction and the other is provided with at least two through circular holes, thereby allowing the first detection unit to be adjustably mounted on the corresponding carrier plate of the frame along the second direction.

14. The gauge according to claim 13, characterized in that: The upper platform extends upward near the detection hole on the inner side along the second direction to form a second convex portion, and the corresponding carrier is provided with a second protrusion erected from its upper surface on the inner side along the second direction adjacent to the second through opening, and the second protrusion and the second protrusion are configured to allow one or more gaskets to be arranged between them along the second direction so as to further adjustably mount the first detection unit on the corresponding carrier of the frame along the second direction.

15. The gauge according to claim 13, characterized in that: The second through opening is in an elliptical shape elongated along the second direction, so that the first cylindrical body of the first detection unit is received therein with a gap along the second direction.

16. The gauge according to claim 12, characterized in that: The other of the other two units is opposite to the auxiliary positioning unit along the second direction, is called a second detection unit, and is configured to be adjustably mounted on a corresponding carrier plate of the frame along the first direction and / or along the second direction relative to the reference positioning unit.

17. The gauge according to claim 16, characterized in that: The second detection unit includes: a second cylindrical body with a corresponding detection hole formed inside, which is configured to be completely received in a third through opening specially provided in the corresponding carrier plate in a circumferential direction and vertically with a gap; an upper plate, which surrounds the second cylindrical body at the upper part of the second cylindrical body, and one of the corresponding carrier plate parts on both sides of the third through opening and the upper plate is provided with at least two through oblong holes extending in the first direction and the other is provided with at least two through circular holes, thereby allowing the second detection unit to be adjustably mounted on the upper surface of the corresponding carrier plate of the frame along the first direction.

18. The gauge according to claim 17, characterized in that: The upper plate extends upward near the corresponding detection hole on the inner side along the second direction to form a third convex portion, and the corresponding carrier plate is provided with a third protrusion erected from its upper surface on the inner side along the second direction adjacent to the third through opening, and the third convex portion and the third protrusion are configured to allow one or more gaskets to be arranged between them along the second direction so that the second detection unit can be adjustably mounted on the corresponding carrier plate of the frame along the second direction.

19. The gauge according to claim 18, characterized in that: The second detection unit is in the form of two separate elements, which are constructed so that the first element includes the second cylindrical body and a first plate that partially surrounds the upper part of the second cylindrical body, and the second element includes a second plate and a third protrusion for receiving the opening of the second cylindrical body of the first element, and the first element and the second element are arranged so that by superimposing the first plate and the second plate and simultaneously passing the second cylindrical body through the opening, a second detection unit with two through oblong holes extending in the first direction is formed, and accordingly, the corresponding carrier plate parts on both sides of the third through opening are provided with two through circular holes.

20. The gauge according to claim 17, characterized in that: The third through opening is a circular opening whose inner diameter is larger than the outer diameter of the second cylindrical body, so that the second cylindrical body is received in the third through opening with a gap in the circumferential direction.

21. The gauge according to claim 7, characterized in that: The wall thickness of the lower body of the reference positioning unit is greater than the wall thickness of the corresponding upper body.

22. The gauge according to claim 9, characterized in that: The wall thickness of the lower body of the auxiliary positioning unit is greater than the wall thickness of the corresponding upper body.

23. The gauge according to any one of claims 1 to 22, characterized in that: The frame is rectangular; and / or the inspection tool is also provided with a handle for an operator to hold.

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