Component fixing structure

Abstract

To provide a component fixing structure that can prevent the occurrence of unevenness in a curing state of UV resin.SOLUTION: A component fixing structure is to fix a second component to a first component, and comprises: fastening pins that are formed on the first component; first holes that are formed in the second component and allow insertion of the fastening pins therethrough; and bushes that each have a second hole having a smaller diameter than the first hole and allowing insertion of the fastening pin therethrough, and are each fitted to the inside of a part of the first hole. After the fastening pin is inserted into the first hole and the second hole, UV curable resin is filled into a gap between an area of the first hole to which the bush is not fitted and the fastening pin.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a structure for fixing an image display panel to an integrally molded lens-equipped camera case. [Background technology]

[0002] Patent Document 1 discloses a display device configured to allow the display panel to be accurately aligned according to the optical characteristics of the eyepiece lens. This display device describes a structure in which a fixing pin integrally molded with the lens is inserted into a fixing hole in the display panel, ultraviolet curing resin (UV resin) is filled in the gap between the fixing pin and the fixing hole, and the UV resin is cured by ultraviolet light, thereby fixing the lens to the display panel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-013320 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the structure described in Patent Document 1, there is a risk that unevenness will occur in the cured state of the UV resin after it is irradiated with ultraviolet rays due to factors such as some of the UV resin filled in the gap between the fixing pin and the fixing hole before ultraviolet rays are irradiated flowing out of the gap, or because a large amount of UV resin is filled in the gap (the display panel is thick).

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide a component fixing structure that can suppress the occurrence of unevenness in the cured state of UV resin. [Means for solving the problem]

[0006] In order to solve the above problems, one aspect of the disclosed technology is a component fixing structure for fixing a second component to a first component, the component fixing structure comprising: a fixing pin formed in the first component; a first hole formed in the second component through which the fixing pin is inserted; and a second hole through which a fixing pin having a smaller diameter than the first hole is inserted, the bushing being fitted inside a part of the first hole; and after the fixing pin is inserted through the first hole and the second hole, an ultraviolet curing resin is filled into the gap between the fixing pin and the area of ​​the first hole where the bushing is not fitted, and the resin is cured. Effect of the Invention

[0007] According to the component fixing structure of the present disclosure, the thickness of the UV resin filled in the gap between the fixing pin and the first hole can be reduced by the thickness of the bush, thereby suppressing unevenness in the cured state of the UV resin. [Brief description of the drawings]

[0008] [Figure 1] FIG. 3 is a three-view diagram of a camera case with a lens used in the component fixing structure according to the present embodiment; [Diagram 2] 1 is a three-view diagram of an image display panel used in a component fixing structure according to an embodiment of the present invention; [Figure 3A] An example of a cross section taken along the line AA in Figure 2 [Figure 3B] Another example of the AA cross section in FIG. 2 [Figure 4] A front view showing how an image display panel is assembled into a camera case with a lens. [Figure 5A] A diagram explaining the part fixing method using an enlarged view of part B in FIG. [Figure 5B] A diagram explaining the part fixing method using an enlarged view of part B in FIG. [Figure 6] FIG. 11 is a plan view of a modified image display panel used in the component fixing structure according to the embodiment; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The component fixing structure according to the present disclosure is a structure for fixing an image display panel to a camera case with a lens. In this structure, a bush is effectively used and a characteristic UV resin filling method is used to fix the image display panel to the camera case with a lens. Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the drawings.

[0010] <Embodiment> [Part shape] Fig. 1 is a three-view diagram for explaining an outline of a lens-equipped camera case 10 (first part) used in a part fixing structure according to an embodiment of the present disclosure. The lens-equipped camera case 10 illustrated in Fig. 1 includes a base 11, three fixing pins 12, a camera case 13, and a lens 14.

[0011] The base 11 is a base for fixing the lens 14. Three fixing pins 12 are integrally formed on the base 11, and are arranged in parallel to each other at triangular positions surrounding the lens 14. The three fixing pins 12 are cylindrical pins that are inserted into three through holes 21h provided in the image display panel 20, which will be described later, to fix the image display panel 20 to the lens-equipped camera case 10. An image sensor (not shown) is disposed in the camera case 13. The camera case 13 may be formed integrally with the base 11. The lens 14 is attached to the base 11 with the optical axis appropriately adjusted between the lens 14 and the image sensor disposed in the camera case 13.

[0012] Fig. 2 is a three-view diagram for explaining an outline of an image display panel 20 (second component) used in a component fixing structure according to an embodiment of the present disclosure. Fig. 3A is an example of a cross-sectional view of the image display panel 20 taken along line AA in Fig. 2.

[0013] The image display panel 20 illustrated in Figures 2 and 3A includes a base 21, a display panel 22, three through holes 21h provided in the base 21, and three bushes 23 fitted into the three through holes 21h.

[0014] The base 21 is an outer frame for holding the display panel 22. The three fixing pins 12 of the lens-equipped camera case 10 are inserted into three through holes 21h (first holes) provided in the base 21, respectively, and the base 21 is fixed to the fixing pins 12 by a fixing method described later. The display panel 22 is fixed to the lens-equipped camera case 10 in a state where the six-axis (X, Y, Z, roll, pitch, yaw) alignment is adjusted. The three bushes 23 are, for example, rubber bushes, and are fitted to a predetermined depth D inside a part of the three through holes 21h. At the center of the three bushes 23, a through hole 23h (second hole) is provided through which the three fixing pins 12 of the lens-equipped camera case 10 are inserted. The through hole 23h has a smaller diameter (smaller diameter) than the through hole 21h. By setting the fitting range of the bush 23 to the depth D of the through hole 21h, a "resin pool with the bush 23 at the bottom" can be formed in which UV resin is filled in the gap between the fixing pin 12 and the area of ​​the through hole 21h where the bush 23 is not fitted when the fixing pin 12 is inserted.

[0015] The image display panel 20 may further include a collar 24 inserted into the through hole 23h of each bush 23, as illustrated in Fig. 3B. Fig. 3B is another example of the AA cross section of the image display panel 20 of Fig. 2. The collar 24 illustrated in Fig. 3B is a flanged cylindrical shape having a through hole 24h. The presence of the collar 24 makes it possible to prevent the bush 23 from being deformed or caught when the fixing pin 12 of the lens-equipped camera case 10 is inserted into the through hole 23h of the bush 23.

[0016] [Fixed structure / method] Next, a component fixing structure and a fixing method thereof according to an embodiment of the present disclosure will be described with further reference to Figures 4, 5A, and 5B. Figure 4 is a diagram illustrating a structure in which a lens-equipped camera case 10 is combined with an image display panel 20. Figures 5A and 5B are diagrams illustrating a procedure for fixing the joint portion (part B in Figure 4) of the combined lens-equipped camera case 10 and image display panel 20.

[0017] 4 and 5A(a), first, the three fixing pins 12 of the lens-equipped camera case 10 are inserted into the three through holes 21h of the image display panel 20 through the through holes 23h of the bushes 23 and the through holes 24h of the collar 24. In this state, six-axis (X, Y, Z, roll, pitch, yaw) alignment adjustment of the display panel 22 is performed.

[0018] Next, as shown in FIG. 5A(b), UV resin 30 is injected (filled) into the resin pools of the three through holes 21h of the image display panel 20 to about half their depth.

[0019] 5A(c), the UV resin 30 that has been poured into about half of the resin pools of the three through-holes 21h of the image display panel 20 is irradiated with ultraviolet light to harden the UV resin 30. This causes the image display panel 20 to be temporarily fixed to the three fixing pins 12 of the lens-equipped camera case 10. At this time, the six-axis (X, Y, Z, roll, pitch, yaw) alignment of the display panel 22 is readjusted (fine-tuned) as necessary.

[0020] Next, as shown in FIG. 5B(d), the UV resin 30 is injected (filled) into approximately the remaining half of the resin pools in the three through holes 21h of the image display panel 20.

[0021] 5B(e), the UV resin 30 injected into the remaining half of the resin pools of the three through-holes 21h of the image display panel 20 is irradiated with ultraviolet light to harden the UV resin 30. This completes the fixation of the image display panel 20 to the three fixing pins 12 of the lens-equipped camera case 10.

[0022] <Actions and Effects> As described above, according to the component fixing structure according to an embodiment of the present disclosure, the fitting range of the bush 23 is set to the depth D of the through hole 21h, and a resin pool with the bush 23 as the bottom is formed between the fixing pin 12 and the region of the through hole 21h where the bush 23 is not fitted. Therefore, even if the thickness of the image display panel 20 increases, the amount and thickness of the UV resin to be cured can be reduced by adjusting the height of the bush 23. This makes it possible to suppress the occurrence of unevenness in the cured state of the UV resin. Furthermore, by eliminating or reducing the curing unevenness, it becomes possible to fix the image display panel 20 to the lens-equipped camera case 10 (the fixing pin 12) with a certain strength.

[0023] Furthermore, according to the component fixing structure of this embodiment, by creating a resin reservoir with a rubber or other elastic bush 23 at the bottom, it is possible to prevent the UV resin filled in the resin reservoir from leaking out of the gap between the fixing pin 12 and the through hole 21h, compared to a structure that does not use the bush 23. This makes it possible to prevent unevenness in the cured state of the UV resin. Furthermore, by eliminating or reducing the curing unevenness, it is possible to prevent the occurrence of a relative positional deviation between the lens 14 and the display panel 22.

[0024] Furthermore, according to the component fixing structure of this embodiment, by inserting the collar 24 into the through hole 23h of the bush 23, it is possible to prevent the bush 23 from being deformed or caught, which is likely to occur when the fixing pin 12 of the lens-equipped camera case 10 is inserted into the through hole 23h of the bush 23. Also, it is possible to prevent the UV resin filled in the resin reservoir from leaking out from the gap between the fixing pin 12 and the through hole 23h.

[0025] <Modification> Fig. 6 is a plan view of a modified image display panel 20 used in a component fixing structure according to an embodiment of the present disclosure. In the modified image display panel 20 shown in Fig. 6, the three bushes 23 (-1, -2, -3) fitted into the three through holes 21h of the image display panel 20 have different flexure characteristics.

[0026] In the example of Fig. 6, the bush 23-1 is the same as the bush 23 described in the above embodiment. On the other hand, the bush 23-2 is provided with two slits 23s penetrating in the thickness direction, and is more flexible than the bush 23-1. The bush 23-3 is provided with four slits 23s penetrating in the thickness direction, and is more flexible than the bush 23-2. It is preferable that the arrangement direction of the slits 23s in the bush 23-2 is different from the arrangement direction of the slits 23s in the bush 23-3.

[0027] In this way, by using bushes 23-1, 23-2, and 23-3 with different deflection characteristics for the three through holes 21h of the image display panel 20, for example, the through hole 21h of the bush 23-1 with the smallest deflection can be used as the reference hole, the through hole 21h of the bush 23-2 with the next largest deflection can be used as the sub-reference hole, and the through hole 21h of the bush 23-3 with the largest deflection can be used as the other hole (other than the reference hole and the sub-reference hole). By inserting the fixing pin 12 into the through hole 21h of the image display panel 20 and performing processes such as temporary fixing and final fixing with UV resin in the order of "reference hole → sub-reference hole → other holes", it is expected that the adjustment work of the six-axis (X, Y, Z, roll, pitch, yaw) alignment of the display panel 22 can be simplified. [Industrial Applicability]

[0028] INDUSTRIAL APPLICABILITY The component fixing structure of the present disclosure can be used in cases such as when fixing a second component having a through hole through which the fixing pin is inserted to a first component having a fixing pin formed therein. [Explanation of symbols]

[0029] 10. Camera case with lens 11. Base 12 Fixing pin 13 Camera Case 14 Lenses 20 Image display panel 21 Base 21h through hole 22 Display Panel 23 Bush 23h through hole 24 Color 24h through hole 30 UV resin

Claims

1. A component fixing structure for fixing a second component to a first component, a fastening pin formed on the first component; a first hole formed in the second component through which the fastening pin is inserted; a bushing having a second hole through which the fixing pin is inserted, the second hole having a diameter smaller than that of the first hole, the bushing being fitted inside a part of the first hole, A component fixing structure, in which, after the fixing pin is inserted into the first hole and the second hole, ultraviolet curing resin is filled into the gap between the fixing pin and the area of ​​the first hole where the bush is not fitted, and cured.

2. The component fixing structure according to claim 1 , further comprising a cylindrical collar inserted into the second hole.

3. The component fixing structure according to claim 1 , wherein the bush has a slit.

4. 4. The component fixing structure according to claim 3, wherein the fixing pins and the first holes are formed at a plurality of locations, and the plurality of bushes used at the plurality of locations have different deflections due to the slits.

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