Folding hinge, folding cross beam, calibration equipment and calibration system

Abstract

The embodiment of the utility model relates to the technical field of automobile calibration devices, in particular to a folding hinge, a folding beam, calibration equipment and a calibration system. The folding hinge comprises a first hinge piece, a second hinge piece, a self-locking matching piece and a self-locking assembly. The self-locking assembly is used for being connected with the self-locking matching piece in a matched mode when the first hinge piece and the second hinge piece are unfolded together so that the first hinge piece and the second hinge piece can be fixed to each other, and the first hinge piece and the second hinge piece can be released during unlocking. The folding hinge can be switched between folding and unfolding processes. Through the combination of the self-locking matching piece and the self-locking assembly, after the folding hinges are completely unfolded, the two folding hinges can be automatically locked, and it is ensured that the folding hinges are kept stable and do not move in the using process. When the folding hinge is applied to a folding cross beam, the overall structure of the cross beam is stable and reliable, the two cross beam single bodies are mutually fixed under matched connection of the self-locking assemblies and the self-locking matching pieces of the folding hinge, and the overall structure of the cross beam is stable and reliable.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of automobile calibration device, and particularly relates to a folding hinge, a folding beam, a calibration device and a calibration system. BACKGROUND

[0002] The main frame of the automobile calibration device is usually provided with a beam for mounting calibration laser instruments, calibration pattern plates and other related calibration products. In order to ensure the transportation and storage of the beam, the beam in the related technical content usually adopts a folding or split mounting and dismounting structure. Among them, the beam adopting the folding structure is provided with a hinge structure, the beam includes two beam monomers, the hinge structure is connected with the two beam monomers respectively, and the hinge structure aligns the two beam monomers in the length direction to form a complete beam when unfolded.

[0003] However, the hinge structure in the related technical content does not have a self-locking function after the beam is unfolded, so that the operation of fixing the two beam monomers is relatively cumbersome. UTILITY MODEL CONTENT

[0004] An object of the embodiment of the present application is to provide a folding hinge, a folding beam, a calibration device and a calibration system to solve the technical problem of lack of self-locking function of the folding beam in the related technical content.

[0005] In a first aspect, the embodiment of the present application provides a folding hinge, comprising:

[0006] A first hinge piece, the first hinge piece comprising a first workpiece mounting portion;

[0007] A second hinge piece, the second hinge piece comprising a second workpiece mounting portion, the hinge axis of the first hinge piece and the hinge axis of the second hinge piece being collinear or parallel, the first hinge piece and the second hinge piece being capable of being folded and unfolded by relative rotation, and the first workpiece mounting portion and the second workpiece mounting portion being close to each other until aligned when the first hinge piece and the second hinge piece are unfolded together;

[0008] A self-locking matching piece, the self-locking matching piece being mounted on the second hinge piece; and

[0009] A self-locking assembly, the self-locking assembly being mounted on the first hinge piece, the self-locking assembly being used for being connected with the self-locking matching piece when the first hinge piece and the second hinge piece are unfolded together, so as to fix the first hinge piece and the second hinge piece relative to each other, and releasing the first hinge piece and the second hinge piece when unlocked.

[0010] Optionally, the first hinge piece and the second hinge piece are hinged, the first hinge piece comprises an abutting portion, the second hinge piece comprises an abutting matching portion, the abutting portion is used for abutting the abutting matching portion when the first hinge piece and the second hinge piece are unfolded together, so as to limit the first hinge piece and the second hinge piece to each other.

[0011] Optionally, the folding hinge further comprises a base, any one of the first hinge piece and the second hinge piece is hinged on the base;

[0012] Optionally, the base comprises a limiting portion, the limiting portion is arranged between the first hinge piece and the second hinge piece, and the limiting portion is used for abutting the first hinge piece and the second hinge piece respectively when the first hinge piece and the second hinge piece are unfolded together, so as to limit the first hinge piece and the second hinge piece respectively.

[0013] Optionally, the self-locking assembly comprises:

[0014] a lock handle, the lock handle is hinged with the first hinge piece, an axis of the hinge of the lock handle is located at a middle position in a length direction of the lock handle, and the lock handle can rotate relative to the first hinge piece; and

[0015] a resilient member, the resilient member connects the lock handle and the first hinge piece respectively, and the resilient member is used for applying an elastic force in a first rotation direction to the lock handle in a squeezed state;

[0016] Optionally, when the first hinge piece and the second hinge piece are unfolded together, the lock handle can be squeezed by an external force in a second rotation direction or a reaction force of the self-locking matching portion, and after the external force is removed, the lock handle is connected with the self-locking matching portion by the elastic force of the resilient member, the first rotation direction is opposite to the second rotation direction.

[0017] Optionally, the first hinge piece comprises a hinge matching portion and a first connecting portion;

[0018] the lock handle comprises a locking portion, a hinge portion, a second connecting portion and an unlocking portion, the locking portion, the hinge portion, the second connecting portion and the unlocking portion are arranged in a length direction of the lock handle, the hinge portion is located between the locking portion and the unlocking portion, the hinge portion is hinged with the hinge matching portion, the second connecting portion is located between the hinge portion and the unlocking portion, and the locking portion, the second connecting portion and the unlocking portion can rotate relative to the first hinge piece around the hinge axis of the hinge portion following the lock handle;

[0019] When the first hinge member and the second hinge member are unfolded together, the second connecting portion can be pressed by the external force applied to the unlocking portion or the reaction force applied to the locking portion, and the locking portion can be connected with the self-locking matching member by the elastic force applied to the second connecting portion after the external force is removed.

[0020] Optionally, the self-locking matching member comprises a matching hook, and the locking portion comprises an active hook, which is buckled with the matching hook when the first hinge member and the second hinge member are unfolded together.

[0021] Optionally, the first workpiece mounting portion is provided with a first mounting groove, and the first workpiece mounting portion comprises a first side wall and a second side wall, which are oppositely arranged in the width direction of the first mounting groove, and the second side wall is farther away from the hinge axis of the first hinge member than the first side wall, and the self-locking assembly is mounted on the second side wall and located outside the first mounting groove.

[0022] The second workpiece mounting portion is provided with a second mounting groove, and the second workpiece mounting portion comprises a third side wall and a fourth side wall, which are oppositely arranged in the width direction of the second mounting groove, and the fourth side wall is farther away from the hinge axis of the first hinge member than the third side wall, and the self-locking matching member is mounted on the fourth side wall and located outside the second mounting groove.

[0023] In a second aspect, the embodiments of the present application further provide a folding beam, comprising:

[0024] a first beam unit;

[0025] a second beam unit; and

[0026] The folding hinge described in any one of the above embodiments, the first beam unit is mounted on the first workpiece mounting portion of the folding hinge, the second beam unit is mounted on the second workpiece mounting portion of the folding hinge, the folding hinge can make the first beam unit and the second beam unit close to each other and align with each other in the length direction when the first hinge member and the second hinge member are unfolded together, and make the first beam unit and the second beam unit fold close to each other when the first hinge member and the second hinge member are folded.

[0027] In a third aspect, the embodiments of the present application further provide a calibration device, comprising:

[0028] a base;

[0029] a main frame vertically arranged on the base; and

[0030] The folding beam described above is mounted on the main frame.

[0031] In a fourth aspect, embodiments of this application also provide a calibration system, including:

[0032] The calibration equipment described above; and

[0033] A diagnostic instrument, which is communicatively connected to the calibration device.

[0034] The embodiments of this application achieve the following technical effects: The folding hinge of this application realizes the folding and unfolding of the folding hinge by setting the relative rotation of the first hinge member and the second hinge member. The combination of the self-locking fitting and the self-locking assembly enables the two folding hinges to be automatically locked after the folding hinge is fully unfolded, ensuring that they remain stable and do not shift during use. When applied to a folding beam, it makes the overall structure of the beam stable and reliable. The two beam units are mutually fixed by the cooperation of the self-locking assembly and the self-locking fitting of the folding hinge, making the overall structure of the beam stable and reliable. Attached Figure Description

[0035] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0036] Figure 1 This is a schematic diagram of a folding beam provided in an embodiment of this application;

[0037] Figure 2 A schematic diagram of the unfolded structure of a folding hinge provided in an embodiment of this application;

[0038] Figure 3 This is a schematic diagram of a folding and collapsing structure of a folding hinge provided in an embodiment of this application;

[0039] Figure 4 A schematic diagram of the unlocking process of a folding hinge provided in an embodiment of this application;

[0040] Figure 5 for Figure 4 Enlarged view of section A;

[0041] Figure 6 A schematic diagram of the mating structure of a self-locking component and a self-locking mating part of a folding hinge provided in an embodiment of this application;

[0042] Figure 7 for Figure 6 Enlarged view of section B;

[0043] Figure 8 A structure schematic view of a calibration device provided by an embodiment of the present application.

[0044] Labeling:

[0045] 1000, calibration device; 100, folding beam; 10, first beam unit; 20, second beam unit; 30, folding hinge; 31, first hinge part; 311, first workpiece mounting part; 3111, first mounting groove; 3112, first side wall; 3113, second side wall; 312, hinge matching part; 313, first connecting part; 32, second hinge part; 321, second workpiece mounting part; 3211, second mounting groove; 3212, third side wall; 3213, fourth side wall; 33, self-locking matching part; 331, matching hook; 3311, guide matching surface; 34, self-locking assembly; 341, lock handle; 3411, locking part; 34111, active hook; 34112, guide surface; 3412, hinge part; 3413, second connecting part; 3414, unlocking part; 342, elastic part; 36, base; 361, limiting part. 200, base; 300, main frame. DETAILED DESCRIPTION

[0046] In order to facilitate the understanding of the present application, the present application will be described in more detail below in combination with the drawings and specific embodiments. It should be noted that when an element is described as being "connected" to another element, it can be directly on the other element or one or more intervening elements can be present therebetween. The terms "upper", "lower", "left", "right", "upper end", "lower end", "top" and "bottom" and the like used in the specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0047] Unless otherwise defined, all technical and scientific terms used in the specification have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0048] The main frame of the automobile calibration device is usually equipped with a crossbeam for mounting calibration laser instruments, calibration pattern plates and other related calibration equipment. In order to facilitate the transportation and storage of the crossbeam, a folding or split mounting and dismounting structure is usually used in the related technology. Among them, the folding crossbeam is connected by a folding hinge, the crossbeam is composed of two crossbeam monomers, the folding hinge connects the two crossbeam monomers together and aligns them in the length direction when unfolded, forming a complete crossbeam. However, the folding hinge in the related technology lacks a self-locking function after the crossbeam is unfolded, resulting in a complex operation of fixing the two crossbeam monomers.

[0049] To solve the above technical problems, the folding hinge 30 of the embodiment of the present application is applied to components or devices that need to fold or unfold two workpieces, for example, specifically applied to the folding crossbeam 100 of the automobile calibration device.

[0050] Please refer to Figure 1 and Figure 2 In some embodiments, the folding hinge 30 includes a first hinge piece 31, a second hinge piece 32, a self-locking matching piece 33 and a self-locking assembly 34. The first hinge piece 31 includes a first workpiece mounting portion 311, and the second hinge piece 32 includes a second workpiece mounting portion 321, which are used to mount two crossbeam monomers respectively.

[0051] The hinge axis of the first hinge piece 31 is collinear or parallel to the hinge axis of the second hinge piece 32, and the first hinge piece 31 and the second hinge piece 32 can be folded and unfolded by relative rotation. When the first hinge piece 31 and the second hinge piece 32 are unfolded together, the first workpiece mounting portion 311 and the second workpiece mounting portion 321 are close to each other until aligned.

[0052] The self-locking matching piece 33 is mounted on the second hinge piece 32, and the self-locking assembly 34 is mounted on the first hinge piece 31. The self-locking assembly 34 is used to cooperate and connect with the self-locking matching piece 33 when the first hinge piece 31 and the second hinge piece 32 are unfolded together, so as to fix the first hinge piece 31 and the second hinge piece 32 relative to each other, and release the first hinge piece 31 and the second hinge piece 32 when unlocked.

[0053] The structure principle of the folding hinge 30 of the embodiment of the present application is that the folding hinge 30 of the embodiment of the present application realizes folding and unfolding by setting the relative rotation of the first hinge piece 31 and the second hinge piece 32. The combination of the self-locking matching piece 33 and the self-locking assembly 34 enables the two hinge pieces to be automatically locked after the folding hinge 30 is completely unfolded, ensuring that they remain stable and do not shift during use.

[0054] It can be understood that the folding hinge 30 is connected by the self-locking assembly 34 and the self-locking matching part 33, and when the first hinge part 31 and the second hinge part 32 are unfolded together, the self-locking is realized to fix each other, avoiding the relative movement of the two. When the folding hinge 30 is applied to the folding beam 100, the two beam units are respectively installed in the first workpiece mounting part 311 and the second workpiece mounting part 321, and when the first hinge part 31 and the second hinge part 32 are unfolded together, they are close to each other and aligned in the length direction, forming a complete beam. The two beam units are fixed to each other under the cooperation of the self-locking assembly 34 and the self-locking matching part 33 of the folding hinge 30, so that the overall structure of the beam is stable and reliable.

[0055] Exemplarily, when the folding hinge 30 is applied to the folding beam 100, each of the first hinge part 31 and the second hinge part 32 is configured to be detachably connected with the corresponding beam unit, for example, fixed by screws, and each of the first workpiece mounting part 311 and the second workpiece mounting part 321 is provided with a groove arranged along the length direction of the beam unit when the beam unit is mounted, and the inner contour of the groove is matched with the outer contour of the beam unit. In other embodiments, the first workpiece mounting part 311 and the second workpiece mounting part 321 can be mounting plates with positioning structures for positioning the corresponding beam unit, so that the two beam units can be aligned in the length direction when the first hinge part 31 and the second hinge part 32 are unfolded together. The positioning structure can adopt matched positioning holes and positioning columns, and be respectively arranged on the mounting plate and the beam unit.

[0056] In some embodiments, the first hinge part 31 and the second hinge part 32 are hinged, the first hinge part 31 includes an abutting part (not shown in the figure), and the second hinge part 32 includes an abutting matching part (not shown in the figure), the abutting part is used to abut the abutting matching part when the first hinge part 31 and the second hinge part 32 are unfolded together, so as to limit the first hinge part 31 and the second hinge part 32 to each other.

[0057] It can be understood that the design purpose of the abutting part and the abutting matching part is that when the hinge is unfolded to a certain angle, the two hinge parts can contact each other and limit further movement. This limiting function prevents unnecessary displacement of the beam when it is not fully unfolded or over-unfolded, and ensures that the beam remains stable in the predetermined unfolded state.

[0058] In some embodiments, the abutting part refers to a protruding structure or a groove provided on the first hinge 31, which is used to abut with the abutting matching part of the second hinge 32, so as to ensure that the two hinges can be accurately aligned and limited to each other when unfolded. The abutting matching part refers to a corresponding structure provided on the second hinge 32, which is used in cooperation with the abutting part of the first hinge 31 to ensure that the two hinges can be in close contact and achieve the limiting function during unfolding. Among them, one of the first hinge 31 and the second hinge 32 can be hingedly installed on the main frame of the automobile calibration device and be limited to the rotation angle relative to the main frame. For example, the first hinge 31 is hingedly installed on the main frame and is limited to rotate 90° relative to the main frame. At the same time, the first workpiece mounting part 311 is configured to be perpendicular to the main frame when the first hinge 31 and the second hinge 32 are unfolded together, so that the installed beam unit is perpendicular to the main frame; and the first workpiece mounting part 311 is configured to be parallel to the main frame when the first hinge 31 and the second hinge 32 are folded, so that the installed beam unit is parallel to the main frame.

[0059] Please refer to Figure 2 and Figure 3 In other embodiments, the two hinges are not hingedly connected to each other, and the folding hinge 30 further comprises a base 36, and either of the first hinge 31 and the second hinge 32 is hingedly connected to the base 36. Among them, the base 36 comprises a limiting part 361, which is arranged between the first hinge 31 and the second hinge 32, and is used to abut the first hinge 31 and the second hinge 32 respectively when the first hinge 31 and the second hinge 32 are unfolded together, so as to limit the first hinge 31 and the second hinge 32 respectively.

[0060] It can be understood that the base 36 is an intermediate connecting part of the two hinges, and the limiting part 361 is arranged on the base 36, which further strengthens the position control of the hinges during unfolding. Through the limiting part 361 on the base 36, the first hinge 31 and the second hinge 32 can be accurately limited when unfolded to a specific position, so as to ensure the stable unfolding and folding of the beam. Exemplarily, the first hinge 31 and the second hinge 32 are substantially L-shaped structures and are symmetrically arranged, and the hinge axis of either of the first hinge 31 and the second hinge 32 is arranged on one of the vertical parts of the L-shaped structure, so that when the two hinges are unfolded, the other vertical part of the L-shaped structure of the two hinges can be aligned and combined together.

[0061] In some embodiments, the base 36, as a fixed part of the folding hinge 30, can be a metal or composite member mounted on the main frame of the vehicle calibration device. The base 36 provides a mounting structure for the hinge, such as a hinge shaft or a hinge hole, etc. The limiting part 361 is provided on the base 36 and can include a protrusion, a groove or other shaped limiting structure, which is used to contact the corresponding part of the hinge when the hinge is unfolded, so as to limit the hinge and prevent it from exceeding the preset movement range. For example, the limiting part 361 is a rib provided on the base 36. The base 36 can be fixedly mounted on the main frame of the vehicle calibration device, wherein any one of the first hinge 31 and the second hinge 32 is limited in the rotation angle relative to the main frame. For example, the first hinge 31 and the second hinge 32 are both limited to rotate 90° relative to the main frame. Meanwhile, the first workpiece mounting part 311 and the second mounting part are both configured to be perpendicular to the main frame when the first hinge 31 and the second hinge 32 are unfolded together, so as to make the installed cross beam unit perpendicular to the main frame; and the first workpiece mounting part 311 and the second mounting part are both configured to be parallel to the main frame when the first hinge 31 and the second hinge 32 are folded, so as to make the installed cross beam unit parallel to the main frame.

[0062] Please refer to Figures 3 to 7 In some embodiments, the self-locking assembly 34 includes a lock handle 341 and an elastic member 342. The lock handle 341 is hinged with the first hinge 31, and the hinge axis of the lock handle 341 is located at the middle position in the length direction of the lock handle 341, and the lock handle 341 can rotate relative to the first hinge 31. The elastic member 342 is connected with the lock handle 341 and the first hinge 31 respectively, and the elastic member 342 is used to apply an elastic force in the first rotation direction X1 to the lock handle 341 in the extrusion state. Wherein, when the first hinge 31 and the second hinge 32 are unfolded together, the lock handle 341 can be extruded by the elastic member 342 under the action of the external force in the second rotation direction X2 or the reaction force of the self-locking matching part 33, and after the external force is removed, the lock handle 341 is connected with the self-locking matching part 33 by the elastic force of the elastic member 342. The first rotation direction X1 is opposite to the second rotation direction X2.

[0063] It can be understood that the self-locking assembly 34 realizes the function of automatic locking of the hinge after unfolding through the cooperation of the lock handle 341 and the elastic member 342. The rotation of the lock handle 341 is controlled by the elastic force of the elastic member 342. When the folding hinge 30 is unfolded, the self-locking fitting part 33 can abut against but not be connected with the lock handle 341, at this time, the self-locking fitting part 33 applies a counterforce to the lock handle 341 to make the lock handle 341 rotate to the second rotation direction X2 to press the elastic member 342. The first rotation direction X1 and the second rotation direction X2 are opposite rotation directions. When the folding hinge 30 is completely unfolded, the self-locking fitting part 33 is completely connected with the lock handle 341 to complete the locking, at this time, the self-locking fitting part 33 can be configured to continue to apply the counterforce of the second rotation direction X2 to the lock handle 341, or can be configured not to continue to apply the counterforce of the second rotation direction X2 to the lock handle 341.

[0064] Please refer to Figure 5 When unlocking, the lock handle 341 is pushed to rotate to the second rotation direction X2 by an external force applied in the second rotation direction X2 (the external force is greater than the counterforce applied by the self-locking fitting part 33), to press the elastic member 342, so that the lock handle 341 is disconnected with the self-locking fitting part 33 to release the locking. When the external force is released, the lock handle 341 can return to the initial position under the elastic force of the elastic member 342. Exemplarily, the initial position of the lock handle 341 can be configured to be substantially parallel to the length direction of the first workpiece mounting part 311.

[0065] In some embodiments, the lock handle 341 is a rotating part connected to the first hinge part 31, and the hinge axis thereof is configured between two end portions thereof. One side end portion or a portion close to the one side end portion is used for being connected with the self-locking fitting part 33 to realize the locking of the two hinge parts, and the other side end portion or a portion close to the other side end portion is used for being applied by an external force in the second rotation direction X2 to rotate to the second rotation direction X2 to make the lock handle 341 be disconnected with the self-locking fitting part 33, so as to release the locking.

[0066] Please refer to Figures 3 to 7In some embodiments, the first hinge part 31 comprises a hinge fitting part 312 and a first connecting part 313. The lock handle 341 comprises a locking part 3411, a hinge part 3412, a second connecting part 3413 and an unlocking part 3414, which are arranged along the length direction of the lock handle 341, the hinge part 3412 is between the locking part 3411 and the unlocking part 3414, the hinge part 3412 is hinged with the hinge fitting part 312, the second connecting part 3413 is between the hinge part 3412 and the unlocking part 3414, and the locking part 3411, the second connecting part 3413 and the unlocking part 3414 can rotate relative to the first hinge part 31 around the hinge axis of the hinge part 3412.

[0067] When the first hinge part 31 and the second hinge part 32 are unfolded together, the second connecting part 3413 can be pressed against the elastic member 342 under the action of the external force applied to the unlocking part 3414 or the reaction force applied to the locking part 3411, and the locking part 3411 can be connected with the self-locking fitting part 33 by the elastic force applied to the second connecting part 3413 after the external force is removed.

[0068] It can be understood that the locking part 3411, the hinge part 3412, the second connecting part 3413 and the unlocking part 3414 of the lock handle 341 have flexible movement and locking ability during the unfolding and locking of the hinge. The cooperation of the hinge part 3412 and the hinge fitting part 312 ensures that the lock handle 341 can rotate freely around the hinge axis, and the cooperation of the locking part 3411 and the self-locking fitting part 33 realizes automatic locking and unlocking by the elastic force of the elastic member 342, so that the locking is more reliable and the operation is simple.

[0069] Exemplarily, the hinge fitting part 312 comprises a hinge hole arranged on the first hinge part 31 and a rotating pin for penetrating the hinge hole, and the hinge part 3412 of the lock handle 341 is another hinge hole, in actual installation, the hinge holes of the hinge fitting part 312 and the hinge part 3412 are aligned with each other, and the rotating pin penetrates the hinge holes of the two to realize the hinge of the lock handle 341 and the first hinge part 31. The unlocking part 3414 is the end of the lock handle 341 farthest from the locking part 3411, which is used for manually applying force to unlock, and the elastic member 342 returns to the initial position in the natural state.

[0070] The first connecting part 313 and the second connecting part 3413 are fixing structures for fixing both ends of the elastic member 342. In an embodiment, the elastic member 342 is a compression spring or a torsion spring. The first connecting part 313 and the second connecting part 3413 are each provided with a card hole or a card hole for clamping the elastic member 342. One end of the elastic member 342 is clamped in the first connecting part 313, and the other end of the elastic member 342 is clamped in the second connecting part 3413, and the elastic member 342 is not separated from the first connecting part 313 and the second connecting part 3413. For example, when the elastic member 342 is a torsion spring, the spiral center line of the torsion spring is arranged to be collinear with the hinge axis of the hinge part 3412. When the locking part 3411 is not connected to the self-locking matching part 33 and the unlocking part 3414 is not subjected to external force, the elastic member 342 abuts against or pulls the second connecting part 3413, so that the lock handle 341 is kept in the initial position. When the locking part 3411 abuts against the self-locking matching part 33 or the unlocking part 3414 is subjected to external force, the elastic member 342 is in a compressed state due to the abutment of the second connecting part 3413.

[0071] In some embodiments, the self-locking matching part 33 comprises a matching hook 331, and the locking part 3411 comprises a driving hook 34111. When the first hinge part 31 and the second hinge part 32 are unfolded together, the driving hook 34111 and the matching hook 331 are buckled with each other.

[0072] It can be understood that the design of the matching hook 331 and the driving hook 34111 achieves the self-locking function by buckling with each other. The driving hook 34111 as a driving part can actively touch and buckle the matching hook 331 when the folding hinge 30 is unfolded, and the locking is completed. This design simplifies the locking process, making it more reliable and efficient.

[0073] Specifically, the matching hook 331 is arranged on the second hinge part 32 and can be a curved or right-angle hook-shaped part for receiving the buckle of the driving hook 34111. The driving hook 34111 is arranged on the lock handle 341 and can be a curved or right-angle hook-shaped part matched with the matching hook 331, which can actively buckle into the matching hook 331 under the action of the elastic member 342, ensuring that it can accurately contact and buckle the matching hook 331 when the folding hinge 30 is unfolded.

[0074] Please refer to Figures 4 to 7 In some embodiments, the driving hook 34111 is provided with a guide surface 34112, and the matching hook 331 is provided with a guide matching surface 3311. The guide surface 34112 is used to abut against and slide relative to the guide matching surface 3311 when the first hinge part 31 and the second hinge part 32 are unfolded together. The matching hook 331 is buckled with the matching hook 331 when the guide surface 34112 slides to separate from the guide matching surface 3311.

[0075] It can be understood that the design of the guide surface 34112 ensures that the active clasp 34111 and the matching clasp 331 can slide along a specific path during the buckling process, gradually guiding the accurate docking of the two clasps, thereby improving the smoothness and reliability of the locking process. Specifically, the guide surface 34112 can be a guide slope or a guide arc surface provided on the active clasp 34111, and the guide matching surface 3311 can be a guide slope or a guide arc surface provided on the matching clasp 331.

[0076] In some embodiments, the self-locking matching part 33 includes a matching lock hook (not shown in the figure), and the locking part 3411 includes an active lock sleeve (not shown in the figure). When the first hinge part 31 and the second hinge part 32 are unfolded together, the active lock sleeve is sleeved on the matching lock hook.

[0077] It can be understood that the design of the matching lock hook and the active lock sleeve realizes the self-locking function through the sleeving relationship. The active lock sleeve, as an active component, can automatically sleeve on the matching lock hook when the cross beam is unfolded, complete the locking, and ensure the automation and reliability of the locking process, while providing a stable connection.

[0078] Specifically, the matching lock hook is provided on the second hinge part 32 and can be a curved or right-angled hook-shaped component for receiving the buckling of the active lock sleeve. The active lock sleeve is provided on the lock handle 341 and is configured with a lock hole and can be sleeved into the matching lock hook. It can be a ring or a semi-ring structure to ensure that it can be firmly sleeved on the matching lock hook when the folding hinge 30 is unfolded, realizing the locking.

[0079] Please refer to Figure 4 and Figure 6 In some embodiments, the first workpiece mounting part 311 is provided with a first mounting slot 3111, the first workpiece mounting part 311 includes a first side wall 3112 and a second side wall 3113, the first side wall 3112 and the second side wall 3113 are oppositely arranged in the width direction of the first mounting slot 3111, the second side wall 3113 is farther away from the hinge axis of the first hinge part 31 than the first side wall 3112, and the self-locking assembly 34 is mounted on the second side wall 3113 and located outside the first mounting slot 3111.

[0080] The second workpiece mounting part 321 is provided with a second mounting slot 3211, the second workpiece mounting part 321 includes a third side wall 3212 and a fourth side wall 3213, the third side wall 3212 and the fourth side wall 3213 are oppositely arranged in the width direction of the second mounting slot 3211, the fourth side wall 3213 is farther away from the hinge axis of the first hinge part 31 than the third side wall 3212, and the self-locking matching part 33 is mounted on the fourth side wall 3213 and located outside the second mounting slot 3211.

[0081] It can be understood that the first mounting groove 3111 of the first workpiece mounting portion 311 partially accommodates one of the beam monomers and is positioned by the first side wall 3112 and the second side wall 3113 of the first mounting groove 3111 to achieve stable mounting. The second mounting groove 3211 of the second workpiece mounting portion 321 accommodates the other beam monomer and is positioned by the third side wall 3212 and the fourth side wall 3213 of the second mounting groove 3211 to achieve stable mounting. In addition, the self-locking assembly 34 and the self-locking matching piece 33 are arranged at a position farther away from the hinge axis, which indeed increases the length of the force arm and improves the torque of the locking connection, thereby enhancing the stability of the overall structure. In addition, the self-locking assembly 34 and the self-locking matching piece 33 are arranged outside the corresponding mounting portions, respectively, which facilitates the unlocking operation of the user.

[0082] Please refer to Figure 1 In the second aspect, the embodiments of the present application also provide a folding beam 100, which is applied to a component or device requiring a beam, for example, specifically applied to an automobile calibration device.

[0083] In some embodiments, the folding beam 100 includes the first beam monomer 10, the second beam monomer 20, and the folding hinge 30 described above. The first beam monomer 10 is mounted to the first workpiece mounting portion 311 of the folding hinge 30, the second beam monomer 20 is mounted to the second workpiece mounting portion 321 of the folding hinge 30, and the folding hinge 30 can make the first beam monomer 10 and the second beam monomer 20 approach each other and align with each other in the length direction when the first hinge piece 31 and the second hinge piece 32 are unfolded together, and make the first beam monomer 10 and the second beam monomer 20 fold close to each other when the first hinge piece 31 and the second hinge piece 32 are folded.

[0084] It can be understood that the folding beam 100 of the embodiments of the present application realizes the folding and unfolding functions of the two beam monomers through the folding hinge 30. In the unfolded state, the hinge ensures that the beam monomers are accurately aligned in the length direction to form a complete beam; in the folded state, the beam monomers can be stacked, which optimizes the space utilization and improves the portability and practicality of the folding beam 100.

[0085] Please refer to Figure 1 and Figure 8 In the third aspect, the embodiments of the present application also provide a calibration device 1000, which includes a base 200, a main frame 300, and the folding beam 100 of the above-mentioned embodiments. The main frame 300 is vertically arranged on the base 200, and the folding beam 100 is mounted on the main frame 300.

[0086] It can be understood that the folding cross beam 100 is mounted at the mounting interface of the main frame 300 through the folding hinge 30, the first cross beam unit 10 and the second cross beam unit 20 are respectively embedded in the first workpiece mounting part and the second workpiece mounting part of the folding hinge 30, and are fixed through screws or quick release structures. When the folding cross beam 100 is unfolded, the self-locking assembly 34 of the folding hinge 30 is automatically buckled with the self-locking matching piece 33, so that the two cross beam units are accurately aligned in the length direction, forming a complete cross beam structure extending horizontally; when it is folded, the folding hinge 30 is unlocked, the two cross beam units are folded around the hinge axis, and are close to the main frame 300 to reduce the occupied space.

[0087] In a fourth aspect, the embodiments of the present application also provide a calibration system, which comprises the calibration device 1000 in the above embodiments and a diagnostic instrument, and the diagnostic instrument is in communication connection with the calibration device 1000.

[0088] The diagnostic instrument can be a tablet diagnostic instrument, so as to facilitate carrying and transportation. Optionally, a visual camera is arranged on the cross beam of the calibration device 1000, and the visual camera is in communication connection with the diagnostic instrument, and the diagnostic instrument can be used to receive vehicle image data photographed by the visual camera.

[0089] Optionally, the calibration system can also comprise calibration elements such as targets, mirrors and lasers, which can be installed on the cross beam.

[0090] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for simplicity; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A foldable hinge, characterized in that, Comprise: a first hinged piece comprising a first workpiece mounting portion; a second hinged piece comprising a second workpiece mounting portion, an axis of hinging of the first hinged piece being collinear or parallel to an axis of hinging of the second hinged piece, the first hinged piece and the second hinged piece being capable of being folded and unfolded by relative rotation, the first hinged piece and the second hinged piece being collectively unfolded, the first workpiece mounting portion and the second workpiece mounting portion being close to each other until aligned; a self-locking fitting piece mounted on the second hinged piece; and a self-locking assembly mounted on the first hinged piece, the self-locking assembly being used to be connected with the self-locking fitting piece when the first hinged piece and the second hinged piece are collectively unfolded, so as to fix the first hinged piece and the second hinged piece to each other, and to release the first hinged piece and the second hinged piece when unlocked. The first hinged piece and the second hinged piece are hinged, the first hinged piece comprises an abutting portion, the second hinged piece comprises an abutting fitting portion, the abutting portion being used to abut against the abutting fitting portion when the first hinged piece and the second hinged piece are collectively unfolded, so as to limit the first hinged piece and the second hinged piece to each other.

2. The foldable hinge according to claim 1, characterized in that Further comprising a base, any one of the first hinged piece and the second hinged piece being hinged on the base; 3. The foldable hinge of claim 1, wherein wherein the base comprises a limiting portion, the limiting portion being arranged between the first hinged piece and the second hinged piece, the limiting portion being used to abut against the first hinged piece and the second hinged piece respectively when the first hinged piece and the second hinged piece are collectively unfolded, so as to limit the first hinged piece and the second hinged piece respectively. The self-locking assembly comprises:

4. The foldable hinge of claim 1, wherein a lock handle, the lock handle being hinged with the first hinged piece, an axis of hinging of the lock handle being located at a middle position in a length direction of the lock handle, the lock handle being capable of rotating relative to the first hinged piece; and a resilient piece, the resilient piece connecting the lock handle and the first hinged piece respectively, the resilient piece being used to apply a resilient force of a first rotation direction to the lock handle in a squeezed state; wherein the lock handle is capable of squeezing the resilient piece under an external force of a second rotation direction or a reaction force of the self-locking fitting piece when the first hinged piece and the second hinged piece are collectively unfolded, and the resilient force of the resilient piece is used to connect with the self-locking fitting piece after the external force is released, the first rotation direction being opposite to the second rotation direction. The first hinged piece comprises a hinged fitting portion and a first connecting portion; 5. The foldable hinge according to claim 4, characterized in that The lock handle comprises a locking portion, a hinged portion, a second connecting portion and an unlocking portion, the locking portion, the hinged portion, the second connecting portion and the unlocking portion being arranged in the length direction of the lock handle, the hinged portion being located between the locking portion and the unlocking portion, the hinged portion being hinged with the hinged fitting portion, the second connecting portion being located between the hinged portion and the unlocking portion, the locking portion, the second connecting portion and the unlocking portion being capable of rotating relative to the first hinged piece around an axis of hinging of the hinged portion following the lock handle; ​ When the first hinge member and the second hinge member are unfolded together, the second connecting portion can be pressed by the external force applied to the unlocking portion or the reaction force applied to the locking portion, and the locking portion can be connected with the self-locking fitting member by the elastic force applied to the second connecting portion after the external force is removed.

6. The foldable hinge of claim 5, wherein The self-locking fitting member includes a fitting hook, and the locking portion includes a driving hook, which is buckled with the fitting hook when the first hinge member and the second hinge member are unfolded together.

7. The foldable hinge of claim 1, wherein The first workpiece mounting portion is provided with a first mounting groove, and includes a first side wall and a second side wall, which are oppositely arranged in the width direction of the first mounting groove, and the second side wall is farther away from the hinge axis of the first hinge member than the first side wall, and the self-locking assembly is mounted on the second side wall and located outside the first mounting groove. The second workpiece mounting portion is provided with a second mounting groove, and includes a third side wall and a fourth side wall, which are oppositely arranged in the width direction of the second mounting groove, and the fourth side wall is farther away from the hinge axis of the first hinge member than the third side wall, and the self-locking fitting member is mounted on the fourth side wall and located outside the second mounting groove.

8. A folding cross member characterized by, Comprise: a first beam unit; a second beam unit; and The folding hinge of any one of claims 1-7, the first beam unit is mounted on the first workpiece mounting portion of the folding hinge, the second beam unit is mounted on the second workpiece mounting portion of the folding hinge, the folding hinge can make the first beam unit and the second beam unit close to each other and align with each other in the length direction when the first hinge member and the second hinge member are unfolded together, and make the first beam unit and the second beam unit fold close to each other when the first hinge member and the second hinge member are folded. Comprise:

9. A calibration apparatus characterized by comprising: a base; a main frame, which is vertically arranged on the base; and The folding beam of claim 8, the folding beam is mounted on the main frame. Comprise:

10. A calibration system characterized by, the calibration device of claim 9; and a diagnostic instrument, which is communicatively connected with the calibration device. ​

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