Clamp for detecting parallelism

Abstract

The utility model discloses a clamp for detecting parallelism, which comprises a bottom plate and a fixing clamp arranged on the bottom plate, a display module is fixed on the fixing clamp, the display module comprises a back plate, the back plate is arranged at the lowest part of the display module, the display module and the back plate are assembled and fixed, and the fixing clamp is arranged on the bottom plate. The back plate of the display module is downwards fixed in the fixing jig, and a micrometer assembly used for testing the parallelism of the display module and the back plate is fixed on the bottom plate. The clamp has the effects that the parallelism of the display module and the back plate is measured so as to ensure that the parallelism of the display module and the back plate is qualified, and the display module and the back plate are not inclined when being assembled on a car machine.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, in particular to a fixture for detecting parallelism. Background Art

[0002] Nowadays, more and more in-vehicle displays use castings to fix the display module. First, the casting is fixed to the vehicle head unit by screws, and then the display module is installed on the casting. When the display module and the casting are assembled, the parallelism of the display module or the casting may be non-standard, resulting in tilting when the display module and the casting are installed on the vehicle head unit, thus affecting the product yield. Summary of the Utility Model

[0003] An object of the utility model is to overcome the deficiencies in the prior art and provide a fixture for detecting parallelism.

[0004] The object of the utility model is achieved by the following technical solutions:

[0005] A fixture for detecting parallelism, comprising: a bottom plate and a fixed fixture arranged on the bottom plate, a display module is fixed on the fixed fixture, the display module includes a back plate, the back plate is located at the bottom of the display module, the display module and the back plate are assembled and fixed, the back plate of the display module is fixed downward in the fixed jig, and a micrometer component for testing the parallelism between the display module and the back plate is fixed on the bottom plate.

[0006] In one embodiment, the micrometer component includes a first micrometer and a second micrometer, the first micrometer and the second micrometer are respectively located at positions close to the left and right ends on the long side of the fixed fixture, and the first micrometer and the second micrometer are used to measure the positions of the display module and the back plate close to the left and right ends respectively.

[0007] In one embodiment, the first micrometer and the second micrometer are arranged in parallel.

[0008] In one embodiment, fixing blocks are arranged at the positions of the bottom plate relative to the first micrometer and the second micrometer, and the two fixing blocks are used to fix the positions of the first micrometer and the second micrometer respectively.

[0009] In one embodiment, a receiving groove for receiving the display module is formed in the fixed fixture, and the back plate of the display module is received downward in the receiving groove.

[0010] In one embodiment, clamping blocks are arranged on three consecutive sides of the fixed fixture relative to the receiving groove, and the clamping blocks protrude from the upper surface of the bottom plate for abutting against three consecutive sides of the display module.

[0011] In one embodiment, a clamping assembly is provided on the side of the fixed fixture where the clamping block is not provided relative to the receiving groove. The clamping assembly includes a clamping cylinder and a pushing block fixed on the clamping cylinder. The clamping cylinder controls the pushing block to move towards the display module until it abuts against the side of the display module.

[0012] In one embodiment, the clamping assembly is disposed on a long side of the fixed fixture relative to the display module.

[0013] In one embodiment, a cushion block for raising the clamping cylinder is provided at the bottom of the clamping cylinder.

[0014] In one embodiment, the display module includes a display screen and a backlight module. The backplane is used to encapsulate the display screen and the backlight module. The display module further includes a cover plate, and the cover plate is located at the uppermost part of the display module.

[0015] Compared with the prior art, the present utility model has at least the following advantages:

[0016] A fixture for detecting parallelism according to the present utility model fixes the backplane by cooperating with the pushing block of the fixed fixture and the clamping cylinder, and then calibrates the values of the first micrometer and the second micrometer to ensure that the first micrometer and the second micrometer are parallel. Thus, the parallelism of the backplane and the display screen is tested in sequence, and it is checked whether the values of the first micrometer and the second micrometer exceed the standard to judge the parallelism of the display screen and the backplane, so as to avoid tilting after the display screen and the backplane are installed in the car radio. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below.

[0018] Figure 1 It is a schematic structural diagram of a fixture for detecting parallelism provided by the present utility model;

[0019] Figure 2 It is an exploded structural diagram of a display module in a fixture for detecting parallelism provided by the present utility model;

[0020] Figure 3 It is a schematic structural diagram of a fixture for detecting parallelism provided by the present utility model with the display module removed.

[0021] Description of the Drawings: 10. Bottom plate; 20. Fixed fixture; 21. Accommodating groove; 30. Display module; 31. Display screen; 32. Backlight module; 33. Cover plate; 34. Back plate; 40. Clamping block; 50. Clamping cylinder; 60. Pushing block; 70. Spacer block; 80. First micrometer; 90. Second micrometer; 100. Fixed block; 110. Relief groove. Detailed implementation

[0022] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0023] A fixture for detecting parallelism, referring to Figure 1 , includes a bottom plate 10 and a fixed fixture 20 disposed on the bottom plate 10, and a display module 30 is fixed on the fixed fixture 20. The fixed fixture 20 clamps and fixes the display module 30 for subsequent detection of the parallelism of the display module 30.

[0024] Referring to Figure 2 , in one embodiment, the display module 30 includes a display screen 31 and a backlight module 32. The display screen 31 is used for display, and the backlight module 32 is located on one side of the display screen 31 and is used to provide light for the display screen 31.

[0025] Furthermore, referring to Figure 2 , the display module 30 further includes a cover plate 33 and a back plate 34. The back plate 34 is located at the bottom of the display module 30 and is used to encapsulate the display screen 31 and the backlight module 32 to protect the display screen 31 and the backlight module 32. The cover plate 33 is located at the top of the display module 30, and the side of the cover plate 33 facing the back plate 34 is in contact with the end face of the back plate 34.

[0026] Referring to Figure 2 , the back plate 34 is made of a metal material. Specifically, the material of the back plate 34 can be aluminum. The back plate 34 is made into the form of a metal casting by the metal material and is installed on the back of the display module 30.

[0027] Referring to Figure 1 , the back plate 34 in the display module 30 is fixed downward in the fixed fixture 20 to detect the parallelism of the display module 30 and the back plate 34.

[0028] Furthermore, referring to Figure 1 and Figure 3 , an accommodating groove 21 for accommodating the display module 30 is provided in the fixed fixture 20, and the back plate 34 of the display module 30 is accommodated downward in the accommodating groove 21. Clamping blocks 40 are provided on three consecutive sides of the fixed fixture 20 relative to the accommodating groove 21, and the clamping blocks 40 protrude from the upper surface of the bottom plate 10 for abutting against three consecutive sides of the display module 30.

[0029] Reference Figure 1 and Figure 3 As shown in FIGS. 0 and 1, a clamping assembly is provided on the side of the fixing jig 20 where no clamping block 40 is provided with respect to the receiving groove 21. The clamping assembly is used to clamp and fix the position of the display module 30. The clamping assembly includes a clamping cylinder 50 and a pushing block 60 fixed on the clamping cylinder 50. The clamping cylinder 50 is fixed on the bottom plate 10, and the piston rod of the clamping cylinder 50 faces the side of the display module 30. The pushing block 60 is located at the end of the piston rod away from the clamping cylinder 50. The clamping cylinder 50 can control the pushing block 60 to move towards the side of the display module 30 until it abuts against the side of the display module 30, thereby clamping and fixing the display module 30.

[0030] Further, with reference to Figure 1 and Figure 3 As shown in FIGS. 2 and 3, the clamping assembly is provided on one long side of the fixing jig 20 with respect to the display module 30.

[0031] Further, with reference to Figure 1 and Figure 3 As shown in FIGS. 4 and 5, a cushion block 70 for raising the clamping cylinder 50 is provided at the bottom of the clamping cylinder 50. The cushion block 70 raises the clamping cylinder 50 so that the pushing block 60 faces the side of the display module 30.

[0032] Reference Figure 1 and Figure 3 As shown in FIGS. 6 and 7, when the display module 30 and the back plate 34 are installed, the back plate 34 needs to be fixed to the vehicle head unit by screws first, and then the display module 30 is assembled to the back plate 34. Therefore, the parallelism between the display module 30 and the back plate 34 needs to be within the standard range to ensure that the display module 30 will not tilt when installed on the vehicle head unit.

[0033] Reference Figure 1 and Figure 3 As shown in FIGS. 8 and 9, in this embodiment, a micrometer assembly for detecting the parallelism between the display module 30 and the back plate 34 is provided. The micrometer assembly includes a first micrometer 80 and a second micrometer 90. The first micrometer 80 and the second micrometer 90 are respectively located at positions near the left and right ends of the long side of the fixing jig 20. The first micrometer 80 and the second micrometer 90 are used to measure the positions of the display module 30 and the back plate 34 near the left and right ends respectively to determine whether the parallelism of the display module 30 is qualified.

[0034] Reference Figure 1 and Figure 3 As shown in FIGS. 10 and 11, the first micrometer 80 and the second micrometer 90 are arranged in parallel to measure the values on the left and right sides of the display module 30 and the back plate 34 respectively, so as to determine whether the parallelism between the display module 30 and the back plate 34 exceeds the standard, so as to ensure that the display module 30 and the back plate 34 will not tilt after assembly.

[0035] Reference Figure 1 and Figure 3 , on the bottom plate 10, fixing blocks 100 are provided at positions relative to the first micrometer 80 and the second micrometer 90. The two fixing blocks 100 are used to fix the positions of the first micrometer 80 and the second micrometer 90 respectively, so as to prevent the first micrometer 80 and the second micrometer 90 from shifting during measurement.

[0036] Furthermore, with reference to Figure 1 and Figure 3 , a relief groove 110 is formed on the upper surface of the fixed fixture 20 for the screws of the first micrometer 80 and the second micrometer 90 to slide through until they abut against the side of the display module 30.

[0037] The fixture cooperates with the push block 60 of the fixed fixture 20 and the clamping cylinder 50 to fix the back plate 34, and then calibrates the values of the first micrometer 80 and the second micrometer 90 to ensure that the first micrometer 80 and the second micrometer 90 are parallel. Then, the parallelism of the back plate 34 and the display screen 31 is tested in sequence, and it is checked whether the values of the first micrometer 80 and the second micrometer 90 exceed the standard, so as to judge the parallelism of the display screen 31 and the back plate 34, thereby preventing the display screen 31 and the back plate 34 from tilting after being installed in the vehicle head unit.

[0038] The above embodiments only represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A fixture for detecting parallelism, characterized in that: include: A base plate (10) and a fixing fixture (20) arranged on the base plate (10), a display module (30) being fixed on the fixing fixture (20), the display module (30) comprising a back plate (34), the back plate (34) being located at the bottom of the display module (30), the display module (30) and the back plate (34) being assembled and fixed, the back plate (34) of the display module (30) being fixed downward in the fixing fixture, and a micrometer assembly for testing the parallelism of the display module (30) and the back plate (34) being fixed on the base plate (10).

2. A parallelism detection fixture according to claim 1, characterized in that: The micrometer assembly comprises a first micrometer (80) and a second micrometer (90), wherein the first micrometer (80) and the second micrometer (90) are respectively located on the long side of the fixing fixture (20) near the left and right ends, and the first micrometer (80) and the second micrometer (90) are used to measure the positions of the display module (30) and the back panel (34) near the left and right ends, respectively.

3. A parallelism detection fixture according to claim 2, characterized in that: The first micrometer (80) and the second micrometer (90) are arranged in parallel.

4. A parallelism detection fixture according to claim 3, characterized in that: The base plate (10) is provided with fixing blocks (100) at positions relative to the first micrometer (80) and the second micrometer (90), and the two fixing blocks (100) are used to fix the positions of the first micrometer (80) and the second micrometer (90), respectively.

5. A parallelism detection fixture according to claim 1, characterized in that: The fixing fixture (20) is provided with a receiving groove (21) for receiving the display module (30), and the back plate (34) of the display module (30) is received downward in the receiving groove (21).

6. A parallelism detection fixture according to claim 5, characterized in that: The fixing fixture (20) is provided with clamping blocks (40) on three continuous side surfaces relative to the accommodating groove (21); the clamping blocks (40) protrude from the upper surface of the bottom plate (10) so as to abut against three continuous side surfaces of the display module (30).

7. A parallelism detection fixture according to claim 6, characterized in that: The fixing fixture (20) is provided with a clamping assembly on the side of the receiving groove (21) where the clamping block (40) is not provided. The clamping assembly comprises a clamping cylinder (50) and a push block (60) fixed on the clamping cylinder (50). The clamping cylinder (50) controls the push block (60) to move in a direction close to the display module (30) until it abuts against the side of the display module (30).

8. A parallelism detection fixture according to claim 7, characterized in that: The clamping assembly is arranged on a long side of the fixing fixture (20) relative to the display module (30).

9. A parallelism detection fixture according to claim 8, characterized in that: A cushion block (70) for raising the clamping cylinder (50) is arranged at the bottom of the clamping cylinder (50).

10. A parallelism detection fixture according to claim 1, characterized in that: The display module (30) comprises a display screen (31) and a backlight module (32); the back panel (34) is used to encapsulate the display screen (31) and the backlight module (32); the display module (30) further comprises a cover panel (33); the cover panel (33) is located at the top of the display module (30).

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