An inspection fixture for the charging port cover of a new energy vehicle

Abstract

The present invention discloses a checking fixture for a charging port cover of a new energy vehicle, which includes a checking fixture bottom plate, a body surface difference simulation block arranged on the checking fixture bottom plate and surrounding the charging port cover workpiece assembly, an opening part formed on the body surface difference simulation block, a charging port cover assembly simulation fixing block arranged in the opening part and fixed on the checking fixture bottom plate for fixedly connecting with the charging port cover workpiece assembly, a surface detection mechanism arranged on the upper part of the charging port cover workpiece assembly for measuring the clearance error in the closed state of the charging port cover workpiece assembly, a locking and fixing simulation pin arranged on the body surface difference simulation block and facing the charging port cover workpiece assembly, and a reference positioning, differential surface gauge and go-no-go gauge arranged on the checking fixture bottom plate for measuring the clearance error between the charging port cover workpiece assembly and the body surface difference simulation block, the charging port cover assembly simulation fixing block and the surface detection mechanism. Through the above scheme, the present invention has the advantages of simple structure, convenient installation, accurate and reliable detection, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a checking fixture for a charging port cover of a new energy vehicle. Background Art

[0002] At present, with the rapid development of domestic new energy electric vehicles, charging ports have been added to vehicles. Most charging ports are arranged on the front bumper or the side of the vehicle body to facilitate layout and charging. In the actual manufacturing of vehicles, for vehicle lightweighting, during the product design and development process, most of the charging port cover assemblies are made of plastic materials. Due to reasons such as the manufacturing process and assembly errors of product components, defects in assembly appearance or function may occur.

[0003] In addition, there are also some checking tools for charging port covers on the market. For example, a Chinese utility model with the patent publication number "CN207095450U" and the name "Checking Fixture for Charging Port Cover" includes: a checking fixture body and a plurality of fixing columns. Detection holes are provided on the checking fixture body; a plurality of the fixing columns are arranged on the checking fixture body, and the plurality of fixing columns respectively correspond one by one to a plurality of vehicle body connection parts on the charging port cover. Each fixing column is fixed to the corresponding vehicle body connection part through a threaded fastener, so as to position the charging port cover in the detection holes. This technology uses 4 self-tapping screws for connection and installation on the back, and the flatness and installation accuracy of the installation are directly related to the detection accuracy. In addition, any charging port cover detection requires independent installation and disassembly, and its detection efficiency is extremely low.

[0004] Therefore, there is an urgent need to propose a checking fixture for a charging port cover of a new energy vehicle with a simple structure, convenient installation, and accurate and reliable detection. Summary of the Invention

[0005] Since the charging port cover is a movable functional part, without a checking fixture for detection during the whole vehicle production process, due to errors caused by component manufacturing and sub-assembly of components, a series of situations such as large gaps and surface differences on the whole vehicle and the charging port cover being unable to close may occur. In view of the above problems, the purpose of the present invention is to provide a checking fixture for a charging port cover of a new energy vehicle. The technical solution adopted by the present invention is as follows:

[0006] A checking fixture for the charging port cover of a new energy vehicle, which is used to clamp the workpiece assembly of the charging port cover and perform clearance error detection. It includes a fixture base plate, a body surface difference simulation block arranged on the fixture base plate and surrounding the workpiece assembly of the charging port cover, an opening part opened on the body surface difference simulation block, a charging port cover assembly simulation fixing block arranged in the opening part and fixed on the fixture base plate for fixedly connecting with the workpiece assembly of the charging port cover, a surface detection mechanism arranged on the upper part of the workpiece assembly of the charging port cover for measuring the clearance error in the closed state of the workpiece assembly of the charging port cover, a locking and fixing simulation pin arranged on the body surface difference simulation block and facing the workpiece assembly of the charging port cover, and a reference positioning, differential surface gauge and go-no-go gauge arranged on the fixture base plate for measuring the clearance error between the workpiece assembly of the charging port cover and the body surface difference simulation block, the charging port cover assembly simulation fixing block and the surface detection mechanism; several reference positionings are provided and are used for three-coordinate measurement to check the simulated vehicle coordinates.

[0007] Further, the surface detection mechanism includes a surface detection support seat fixed on the fixture base plate, and a surface detection block axially connected with the surface detection support seat and placed on the upper part of the workpiece assembly of the charging port cover after rotation.

[0008] Preferably, the surface detection support seat is provided with a semi-circular surface detection block locking and limiting knob; a semi-circular groove is opened on the surface detection block; the rotating part of the surface detection block locking and limiting knob is rotated into the semi-circular groove to complete the locking of the surface detection block.

[0009] Further, an opening arc part matching the upper part of the workpiece assembly of the charging port cover is arranged on the inner side of the surface detection block.

[0010] Furthermore, a workpiece fixing bolt is arranged between the charging port cover assembly simulation fixing block and the workpiece assembly of the charging port cover.

[0011] Further, a pair of buffer pad assembly position simulation blocks are arranged on the inner side of the body surface difference simulation block.

[0012] Preferably, the buffer pad assembly position simulation blocks are arranged along the direction perpendicular to the locking and fixing simulation pin.

[0013] Further, a handling handle is arranged on the fixture base plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) By setting the charging port cover assembly simulation fixing block to simulate the installation state of the workpiece assembly of the charging port cover, and using the body surface difference simulation block, the buffer pad assembly position simulation block and the locking and fixing simulation pin to simulate the position of the body and the workpiece assembly of the charging port cover after the workpiece assembly of the charging port cover is closed or opened, so as to facilitate the measurement of its installation or its own error;

[0016] (2) The present invention realizes the surface profile detection of the charging port cover workpiece assembly in the closed state by setting up a surface profile detection mechanism, so as to ensure its reliable closing and installation.

[0017] (3) The present invention uses reference positioning to check and simulate the vehicle coordinates, and uses a surface difference gauge and a go / no-go gauge to detect the clearance and surface difference of parts.

[0018] (4) The surface profile detection mechanism of the present invention adopts a surface profile detection support seat and a surface profile detection block connected by an axis, and uses a locking limit knob of the surface profile detection block for locking, and its operation is simple and reliable.

[0019] In summary, the present invention has the advantages of simple structure, convenient installation, accurate and reliable detection, etc., and has high practical value and promotion value in the technical field of new energy vehicles. Brief Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the protection scope. For those skilled in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0021] Figure 1 It is the installation schematic diagram of the present invention.

[0022] Figure 2 It is the installation schematic diagram of the present invention (in the open state).

[0023] Figure 3 It is the structural schematic diagram (one) of the present invention.

[0024] Figure 4 It is the structural schematic diagram (two) of the present invention.

[0025] Figure 5 It is the structural schematic diagram of the present invention (without the surface profile detection block).

[0026] In the above-mentioned drawings, the component names corresponding to the reference numerals are as follows:

[0027] 1. Fixture base plate; 2. Handling handle; 3. Reference positioning; 4. Surface difference gauge; 5. Go / no-go gauge; 6. Simulation fixed block for the charging port cover assembly; 7. Simulation block for the buffer pad assembly position; 8. Body surface difference simulation block; 9. Locking fixed simulation pin; 10. Surface profile detection block; 11. Locking limit knob of the surface profile detection block; 12. Charging port cover workpiece assembly; 13. Workpiece fixing bolt; 14. Surface profile detection support seat. Detailed Description of the Invention

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following further describes the present invention with reference to the accompanying drawings and embodiments. The implementation manners of the present invention include but are not limited to the following embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts belong to the scope protected by this application.

[0029] Embodiment

[0030] As Figures 1 to 5 shown, this embodiment provides a jig for a charging port cover of a new energy vehicle, which is used to clamp the charging port cover workpiece assembly 12 and perform clearance error detection. It should be noted that the serial number terms such as "first" and "second" in this embodiment are only used to distinguish similar components and should not be construed as specific limitations on the protection scope. In addition, the directional terms such as "bottom", "top", "inner side", and "outer side" in this embodiment are described based on the accompanying drawings. Moreover, the differential gauge 4 and the go-no-go gauge 5 in this embodiment can be removed from the jig for inspection.

[0031] In this embodiment, the jig for the charging port cover of the new energy vehicle includes a jig base plate 1, a body surface difference simulation block 8 disposed on the jig base plate 1 and surrounding the charging port cover workpiece assembly 12, an opening formed on the body surface difference simulation block 8, a charging port cover assembly simulation fixing block 6 disposed in the opening and fixed to the jig base plate 1 for fixedly connecting with the charging port cover workpiece assembly 12, a surface detection mechanism disposed on the upper part of the charging port cover workpiece assembly 12 for measuring the clearance error in the closed state of the charging port cover workpiece assembly 12, a locking and fixing simulation pin 9 disposed on the body surface difference simulation block 8 and facing the charging port cover workpiece assembly 12, a pair of buffer pad assembly position simulation blocks 7 disposed inside the body surface difference simulation block 8 and arranged along a direction perpendicular to the locking and fixing simulation pin 9, and a reference positioning 3, a differential gauge 4, and a go-no-go gauge 5 disposed on the jig base plate 1 for measuring the clearance error between the charging port cover workpiece assembly 12 and the body surface difference simulation block 8, the charging port cover assembly simulation fixing block 6, and the surface detection mechanism. Among them, several reference positionings 3 are provided and are used for three-coordinate measurement to check and simulate the vehicle coordinates. The surface difference gauge and the go-no-go gauge are used to detect the clearance and surface difference of parts. A workpiece fixing bolt 13 is provided between the charging port cover assembly simulation fixing block 6 and the charging port cover workpiece assembly 12. In this embodiment, the body surface difference simulation block 8, the charging port cover assembly simulation fixing block 6, the buffer pad assembly position simulation blocks 7, and the locking and fixing simulation pin 9 are used to provide the installation and use state of the simulated charging port cover workpiece assembly 12. And the surface difference gauge and the go-no-go gauge are used for inspection.

[0032] In this embodiment, the charging port cover workpiece assembly 12 can be circular, or elliptical, rectangular or square in shape, and the internal space of the body surface difference simulation block 8 and the lower space of the surface detection block 10 can correspond to the change in its structural shape.

[0033] In this embodiment, a surface detection mechanism is used to perform surface detection on the charging port cover workpiece assembly 12 in the closed state. It includes a surface detection support seat 14 fixed on the fixture base plate 1, a surface detection block 10 pivotally connected to the surface detection support seat 14 and placed on the upper part of the charging port cover workpiece assembly 12 after rotation, a surface detection block locking limit knob 11 arranged on the surface detection support seat 14 and in a large semi-circular shape, and a semi-circular groove opened on the surface detection block 10. When the rotating part of the surface detection block locking limit knob 11 is rotated into the semi-circular groove, the locking of the surface detection block 10 is completed. In addition, an opening arc portion that fits with the upper part of the charging port cover workpiece assembly 12 is provided on the inner side of the surface detection block 10 in this embodiment.

[0034] In this embodiment, in order to facilitate the handling of the fixture, a handling handle 2 is provided on the fixture base plate 1.

[0035] The following briefly describes the practical process of this device:

[0036] First step, rotate the surface detection block locking limit knob 11 to open the surface detection block 10.

[0037] Second step, load the charging port cover workpiece assembly 12 into the fixture and fix it with two workpiece fixing bolts 13.

[0038] Third step, flip and close the cover of the charging port cover workpiece assembly 12 and fix it with the charging port cover assembly simulation fixing block 6.

[0039] Fourth step, close the surface detection block 10 and rotate the surface detection block locking limit knob 11 to lock and fix the surface detection block 10.

[0040] Fifth step, use a surface difference gauge and a go-no-go gauge to check the surface difference and clearance profile of the charging port cover workpiece assembly 12.

[0041] Sixth step, after the detection is completed, remove the workpiece, reset the fixture, and clean the fixture.

[0042] This device simulates the actual vehicle assembly, is convenient and fast to install, can solve the errors generated in the assembly of parts and single-piece production, can quickly and accurately detect the charging port cover workpiece assembly, and can effectively improve the product quality and production efficiency.

[0043] The above embodiments are only preferred embodiments of the present invention and do not limit the protection scope of the present invention. Any changes made by using the design principle of the present invention and non-creative labor on this basis shall fall within the protection scope of the present invention.

Claims

1. A checking fixture for the charging port cover of a new energy vehicle, which is used to clamp the workpiece assembly (12) of the charging port cover and perform clearance error detection, and is characterized in that, It includes a fixture base plate (1), a body surface difference simulation block (8) disposed on the fixture base plate (1) and surrounding the charging port cover workpiece assembly (12), an opening portion formed on the body surface difference simulation block (8), a charging port cover assembly simulation fixing block (6) disposed within the opening portion and fixed to the fixture base plate (1) for fixedly connecting with the charging port cover workpiece assembly (12), a surface detection mechanism disposed on the upper portion of the charging port cover workpiece assembly (12) for measuring the clearance error in the closed state of the charging port cover workpiece assembly (12), a locking and fixing simulation pin (9) disposed on the body surface difference simulation block (8) and facing the charging port cover workpiece assembly (12), and a reference positioning (3), a differential gauge (4) and a go / no-go gauge (5) disposed on the fixture base plate (1) for measuring the clearance error between the charging port cover workpiece assembly (12) and the body surface difference simulation block (8), the charging port cover assembly simulation fixing block (6) and the surface detection mechanism; several reference positionings (3) are provided and used for three-coordinate measurement to check the simulated vehicle coordinates. The surface detection mechanism includes a surface detection support base (14) fixed to the fixture base plate (1), and a surface detection block (10) pivotally connected to the surface detection support base (14) and rotated to be placed on the upper portion of the charging port cover workpiece assembly (12). The surface detection support base (14) is provided with a semi-circular surface detection block locking limit knob (11); a semi-circular groove is formed on the surface detection block (10); the rotating part of the surface detection block locking limit knob (11) is rotated into the semi-circular groove to complete the locking of the surface detection block (10). A pair of buffer pad assembly position simulation blocks (7) are disposed inside the body surface difference simulation block (8).

2. The inspection fixture for the charging port cover of a new energy vehicle according to claim 1, wherein An opening arc portion that fits with the upper portion of the charging port cover workpiece assembly (12) is disposed inside the surface detection block (10).

3. The inspection fixture for the charging port cover of a new energy vehicle according to claim 1, characterized in that, A workpiece fixing bolt (13) is disposed between the charging port cover assembly simulation fixing block (6) and the charging port cover workpiece assembly (12).

4. The inspection fixture for the charging port cover of a new energy vehicle according to claim 1, wherein The buffer pad assembly position simulation blocks (7) are arranged along a direction perpendicular to the locking and fixing simulation pin (9).

5. The inspection fixture for the charging port cover of a new energy vehicle according to claim 1, wherein A handling handle (2) is disposed on the fixture base plate (1).

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