Fixing structure

Abstract

A fixing structure (1) according to the present disclosure is provided with: a main body part (10) provided with a cylindrical columnar part (11); and a fixing part (20) provided with a cylindrical recess (21) into which the columnar part (11) is fitted. Fitting grooves (22, 23) are formed at predetermined angular intervals on the inner peripheral surface of the recess (21). Positioning protrusions (12a, 12b) for positioning and capable of fitting into the fitting grooves (22, 23), and a plurality of first restricting protrusions (14a-14d) having a lower height than the positioning protrusions (12a, 12b) are formed on the outer peripheral surface of the columnar section (11). The first restricting protrusions (14a-14d) are configured so as to restrict the position of the columnar section (11) with respect to the recess (21) when the columnar section (11) is fitted in the recess (21) such that the positioning protrusions (12a, 12b) are fitted in the predetermined fitting grooves (22, 23).

Description

Technical Field

[0001] The present disclosure relates to fixing structures. Background Art

[0002] When a camera device such as a driving recorder is mounted on a vehicle, the state of the mounting position varies depending on the vehicle, so the camera device needs to be mounted while adjusting the mounting angle for each vehicle type. Therefore, a fixing structure capable of adjusting the mounting angle is required.

[0003] Patent document 1 discloses an opening and closing mechanism, comprising: a hollow cylindrical bearing body, in which a plurality of spline-shaped grooves are formed on the inner wall of the hollow interior; a hollow cylindrical slider, which is inserted into the bearing body and has a spline-shaped protrusion formed on the outer peripheral surface to engage with the grooves of the bearing body; and a shaft body, which is inserted into the slider and has a protrusion formed on a part of the outer peripheral surface to engage with the grooves of the slider.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent document 1: Japanese Patent Application Laid-Open No. 8-93303. Summary of the invention

[0007] As described in the background art, when a camera device such as a driving recorder is mounted on a vehicle, the state of the mounting position varies depending on the vehicle, so it is necessary to mount the camera device while adjusting the mounting angle for each vehicle model. For example, the angle of the windshield of a vehicle varies for each vehicle, so when mounting the camera device on the windshield of the vehicle, it is necessary to adjust the mounting angle for each vehicle model so that the camera direction of the camera device faces an appropriate direction.

[0008] However, the operation of installing the camera device while adjusting the installation angle for each vehicle model is complicated for the operator. Therefore, a fixing structure is needed that can easily install the camera device on the vehicle while adjusting the installation angle.

[0009] In view of the above-mentioned problems, an object of the present disclosure is to provide a fixing structure that can easily perform the work of mounting an imaging device on a vehicle while adjusting the mounting angle.

[0010] The fixing structure involved in the present disclosure includes: a main body, which is provided with a cylindrical columnar portion; and a fixing portion, which is provided with a cylindrical recessed portion for the columnar portion to be fitted. Fitting grooves are formed at predetermined angle intervals on the inner circumferential surface of the recessed portion, and positioning protrusions for positioning that can be fitted with the fitting grooves and a plurality of first limiting protrusions whose height is lower than the positioning protrusions are formed on the outer circumferential surface of the columnar portion. By selecting the fitting grooves for the positioning protrusions of the columnar portion to be fitted, the angle of the main body relative to the fixing portion can be adjusted, and the first limiting protrusions limit the position of the columnar portion relative to the recessed portion when the columnar portion is fitted with the recessed portion, so that the positioning protrusions are fitted into the predetermined fitting grooves.

[0011] According to the present disclosure, it is possible to provide a fixing structure that can easily perform the work of mounting the imaging device on a vehicle while adjusting the mounting angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view for explaining the fixing structure involved in the embodiment.

[0013] Figure 2 It is a side view for explaining the main body portion included in the fixing structure according to the embodiment.

[0014] Figure 3 It is a side view for explaining the fixing portion included in the fixing structure according to the embodiment.

[0015] Figure 4A This is a front view for explaining the operation when the main body is mounted on the fixing portion.

[0016] Figure 4B This is a front view for explaining the operation when the main body is mounted on the fixing portion.

[0017] Figure 4C This is a front view for explaining the operation when the main body is mounted on the fixing portion.

[0018] Figure 5 yes Figure 4C Cross-sectional view at the cutting line VV. DETAILED DESCRIPTION

[0019] Hereinafter, embodiments will be described with reference to the drawings.

[0020] Figure 1 It is a front view for explaining the fixing structure involved in this embodiment. Figure 2 It is a side view for explaining the fixing portion included in the fixing structure according to the present embodiment. Figure 3 It is a side view for explaining the main body portion included in the fixing structure according to the present embodiment.

[0021] like Figure 1 As shown, the fixing structure 1 according to the present embodiment includes a main body 10 and a fixing part 20. The main body 10 includes a cylindrical columnar part 11. The fixing part 20 includes a cylindrical recessed part 21 (see Figure 3 The fixing structure 1 according to the present embodiment is configured to fix the main body 10 to the fixing part 20 by fitting the columnar part 11 of the main body 10 into the recessed part 21 of the fixing part 20 (see Figure 4C ).

[0022] Hereinafter, as an example, a case where the fixing structure 1 according to the present embodiment is applied to a fixing structure for fixing a vehicle camera device will be described. Figures 1 to 3 In the structural example shown, the main body 10 includes a camera unit 18 (see Figure 2 ), the fixing portion 20 is configured to be mountable at a predetermined position of the vehicle (typically a windshield or a rear window glass). In addition, the fixing structure 1 of the present embodiment may also be used for other purposes than fixing a vehicle camera device.

[0023] like Figure 1 , Figure 2 As shown, the main body 10 includes a cylindrical columnar portion 11. The columnar portion 11 is provided to extend along the x-axis direction on the negative side of the main body 10 in the x-axis direction. Positioning protrusions 12a, 12b, a plurality of first limiting protrusions 14a to 14d, and a plurality of second limiting protrusions 15a to 15d are formed on the outer peripheral surface of the columnar portion 11.

[0024] The positioning protrusions 12a and 12b are formed on the outer peripheral surface of the columnar portion 11 so as to extend in the x-axis direction. Figure 2 As shown in FIG. 1 , the positioning protrusions 12a and 12b are respectively arranged at positions that are 180° offset from each other in the circumferential direction on the outer circumferential surface of the columnar portion 11. The positioning protrusions 12a and 12b are configured to be able to engage with the plurality of fitting grooves 22 and 23 (see FIG. 1 ) provided in the fixing portion 20. Figure 3 That is, the angle of the main body 10 relative to the fixing part 20 is adjusted by fitting the positioning protrusions 12a and 12b into the fitting grooves 22 and 23 of the fixing part 20. A mark 13 (see Figure 1 By providing the mark 13, the user can easily visually confirm the position of the positioning protrusion 12a. Thus, the operation of attaching the main body 10 to the fixing part 20 can be easily performed.

[0025] In addition, Figure 2, a structural example is shown in which the positioning protrusions 12a and 12b are staggered 180° in the circumferential direction. However, in this embodiment, the number of positioning protrusions can be set arbitrarily. For example, three positioning protrusions can also be configured to be staggered 120° in the circumferential direction, and four positioning protrusions can also be configured to be staggered 90° in the circumferential direction. In this case, the fitting groove is formed in the fixing portion 20 in a manner corresponding to the positioning protrusion.

[0026] like Figure 1 , Figure 2 As shown, a plurality of first limiting protrusions 14a to 14d are formed to extend along the x-axis direction on the outer peripheral surface of the columnar portion 11. In addition, a plurality of first limiting protrusions 14a to 14d are formed on the end side (negative side in the x-axis direction) of the columnar portion 11 that engages with the recess 21. Figure 2 As shown, a plurality of first limiting protrusions 14a to 14d are respectively arranged at positions staggered 90° from each other in the circumferential direction on the outer peripheral surface of the columnar portion 11. At this time, a plurality of first limiting protrusions 14a to 14d are formed between the positioning protrusions 12a and the positioning protrusions 12b on the outer peripheral surface of the columnar portion 11. Specifically, the first limiting protrusions 14a and 14c are formed on the positive side in the z-axis direction between the positioning protrusions 12a and the positioning protrusions 12b, and the first limiting protrusions 14b and 14d are formed on the negative side in the z-axis direction between the positioning protrusions 12a and the positioning protrusions 12b.

[0027] The first restricting protrusions 14a to 14d are configured to restrict the position of the columnar portion 11 relative to the recessed portion 21 when the columnar portion 11 is fitted into the recessed portion 21 so that the positioning protrusions 12a and 12b fit into the predetermined fitting grooves 22 and 23 (see Figure 3 ). In other words, when the columnar portion 11 is fitted into the recess 21, at least one of the plurality of first limiting protrusions 14a to 14d abuts against the inner circumferential surface of the recess 21, thereby guiding the columnar portion 11 in a manner that the positioning protrusions 12a, 12b fit into the fitting grooves 22, 23. That is, the diameter of the outer circumferential surface of the columnar portion 11 is smaller than the inner diameter of the recess 21. Therefore, in a state where a portion of the outer circumferential surface of the columnar portion 11 is in direct contact with the inner surface of the recess 21, that is, in a state where the columnar portion 11 is eccentric to the recess 21, it is possible that the fitting of the positioning protrusions 12a, 12b into the fitting grooves 22, 23 is hindered. In the present embodiment, since the first limiting protrusions 14a to 14d are provided, the columnar portion 11 can be guided in a manner that the positioning protrusions 12a, 12b fit into the fitting grooves 22, 23.

[0028] like Figure 2As shown, the height of the plurality of first limiting protrusions 14a to 14d from the outer peripheral surface is lower than the height of the positioning protrusions 12a, 12b from the outer peripheral surface. That is, it is configured so that when the columnar portion 11 is engaged with the recess 21, a gap is formed between the top of the first limiting protrusions 14a to 14d and the inner peripheral surface of the recess 21. In other words, the radius of the recess 21 is greater than the sum of the radius of the outer peripheral surface of the columnar portion 11 and the height of the first limiting protrusions 14a to 14d. Thus, the columnar portion 11 can be easily engaged with the recess 21. In addition, when the first limiting protrusions 14a to 14d are provided, it is possible to suppress the displacement of the main body 10 relative to the fixing portion 20 after engagement, thereby preventing the main body 10 from being embedded in the unexpected engagement grooves 22, 23, and stably fixing the main body 10 to the fixing portion 20.

[0029] like Figure 1 As shown, a plurality of second limiting protrusions 15a to 15d are formed on the end side of the columnar portion 11 on the positive side in the x-axis direction, that is, formed at a position closer to the positive side in the x-axis direction than the plurality of first limiting protrusions 14a to 14d. The plurality of second limiting protrusions 15a to 15d have a function of limiting the position of the columnar portion 11 relative to the recess 21 when the columnar portion 11 is fitted with the recess 21 to stabilize it. In other words, the gap formed between the second limiting protrusions 15a to 15d and the inner peripheral surface of the recess 21 can be reduced, so that the columnar portion 11 can be stably fixed to the recess 21. The plurality of second limiting protrusions 15a to 15d are formed in a manner extending along the x-axis direction on the outer peripheral surface of the columnar portion 11.

[0030] like Figure 2 As shown, a plurality of second limiting protrusions 15a to 15d are respectively arranged at positions staggered by 90° in the circumferential direction on the outer peripheral surface of the columnar portion 11. Specifically, the second limiting protrusions 15a and 15c are formed on the positive side of the z-axis direction between the positioning protrusions 12a and 12b, and the second limiting protrusions 15b and 15d are formed on the negative side of the z-axis direction between the positioning protrusions 12a and 12b.

[0031] exist Figure 1 , Figure 2 In the illustrated structural example, the plurality of first limiting protrusions 14a to 14d and the plurality of second limiting protrusions 15a to 15d are formed so as to be arranged in the same row in the x-axis direction. However, in the present embodiment, the plurality of first limiting protrusions 14a to 14d and the plurality of second limiting protrusions 15a to 15d may be formed so as not to be arranged in the same row in the x-axis direction, that is, to be staggered in the circumferential direction of the outer peripheral surface of the columnar portion 11.

[0032] The plurality of second limiting protrusions 15a to 15d have a function of limiting the position of the columnar portion 11 relative to the recessed portion 21 to stabilize the position when the columnar portion 11 is fitted into the recessed portion 21. Figure 2As shown in FIG. 1 , the height of the plurality of second limiting protrusions 15a to 15d from the outer peripheral surface is lower than the height of the positioning protrusions 12a and 12b from the outer peripheral surface. That is, when the columnar portion 11 is fitted with the recessed portion 21, a gap is formed between the top of the second limiting protrusions 15a to 15d and the inner peripheral surface of the recessed portion 21. Figure 2 As shown, the plurality of second limiting protrusions 15a to 15d may also be configured to be higher in height than the plurality of first limiting protrusions 14a to 14d. In the case of such a structure, when the columnar portion 11 is fitted into the recessed portion 21, the gap formed between the second limiting protrusions 15a to 15d and the inner peripheral surface of the recessed portion 21 can be reduced, so the position of the columnar portion 11 relative to the recessed portion 21 can be fixed more stably.

[0033] like Figure 2 As shown in FIG. 1 , an imaging unit 18 is provided on the positive side in the y-axis direction of the main body 10. The imaging unit 18 can be formed using a camera and is configured to be able to capture an image on the positive side in the y-axis direction. Figure 1 As shown in FIG. 1 , a cable 17 is provided on the positive side in the z-axis direction of the main body 10. For example, the cable 17 is a power cable, and power is supplied to the main body 10 via the power cable.

[0034] like Figure 2 As shown in FIG. 1 , a fixing screw hole 19 is provided at the end of the main body 10 on the negative side in the x-axis direction. The fixing screw hole 19 is configured to be located at the hole portion 28 (see FIG. 1 ) of the fixing portion 20. Figure 3 For example, after the main body 10 is mounted on the fixing portion 20 , the main body 10 can be fixed to the fixing portion 20 by screwing the fixing screw hole 19 .

[0035] like Figure 1 , Figure 3 As shown, the fixing part 20 includes a mounting surface 25. An adhesive member 26 is provided on the mounting surface 25. When the fixing part 20 is mounted on the windshield of the vehicle, the mounting surface 25 of the fixing part 20 is mounted on the windshield of the vehicle using the adhesive member 26. Thus, the fixing part 20 can be fixed to the windshield of the vehicle.

[0036] In addition, if Figure 1 , Figure 3 As shown, the fixing part 20 is provided with a cylindrical recessed part 21. The columnar portion 11 of the main body portion 10 is fitted into the cylindrical recessed portion 21 . like Figure 3As shown, on the inner peripheral surface of the recessed portion 21, fitting grooves 22 and 23 are formed at predetermined angular intervals at positions facing each other with the central axis 30 of the recessed portion 21 as the center. In other words, the fitting grooves 22 and 23 are formed in pairs at positions facing each other with the central axis 30 of the recessed portion 21 as the center. In addition, the fixing structure 1 according to the present embodiment can adjust the angle of the main body 10 relative to the fixing portion 20 by selecting the fitting grooves 22 and 23 into which the positioning protrusions 12a and 12b of the columnar portion 11 are fitted.

[0037] That is, Figure 3 As shown, the plurality of fitting grooves 22 and 23 are arranged to face each other with the central axis 30 as the center. Specifically, the straight line connecting the fitting groove 22 and the fitting groove 23 is a straight line passing through the central axis 30 (at Figure 3 In this embodiment, the fitting groove 22 and the fitting groove 23 are formed in a manner indicated by dotted lines. In this embodiment, by selecting a combination of the fitting grooves 22 and 23 for the positioning protrusions 12a and 12b of the columnar portion 11 to fit, the angle of the main body 10 relative to the fixing portion 20 can be determined from a plurality of angles centered on the central axis 30. Figure 3 In the illustrated configuration example, four angles of 20°, 30°, 40°, and 50° can be selected with respect to the reference surface 29 parallel to the mounting surface 25 .

[0038] A mark 24 is provided on the surface of the fixing portion 20 corresponding to the position where the plurality of fitting grooves 22 are formed. By providing the mark 24, the user can easily visually confirm the position of the fitting groove 22. Thus, the operation of mounting the main body 10 on the fixing portion 20 can be easily performed. In addition, in the present embodiment, the mounting surface 25 of the fixing portion 20 is mounted on the windshield. Therefore, in order to allow the user to visually confirm when the main body 10 is fixed to the fixing portion 20, the mark 24 is provided not on the fitting groove 23 side but on the fitting groove 22 side.

[0039] Next, use FIG. 4A to FIG. 4C The operation of mounting the main body 10 on the fixing portion 20 will be described. Figure 4A As shown, the installation angle when the main body 10 is installed on the fixed part 20 is determined. Specifically, the fitting grooves 22 and 23 of the fixed part 20 in which the positioning protrusions 12a and 12b of the main body 10 are fitted are determined, thereby determining the installation angle of the main body 10 relative to the fixed part 20. At this time, the positioning protrusions 12a and 12b of the main body 10 and the fitting grooves 22 and 23 of the fixed part 20 are positioned using the mark 24 provided on the fixed part 20 and the mark 13 provided on the main body 10. In addition, FIG. 4A to FIG. 4C In the figure, the configuration marks 13 and 24 are on the inside of the vehicle, so FIG. 4A to FIG. 4C The camera unit 18 is not shown in the figure (see Figure 2). That is, the camera unit 18 is installed in a manner facing the outside of the vehicle, so the marks 13 and 24 are arranged in a manner that the installer can see the marks 13 and 24 on the inside of the vehicle. On the other hand, if it is a camera for shooting inside the vehicle, the marks 13 and 24 and the camera unit 18 are set on the same side.

[0040] Afterwards, if Figure 4B As shown, the main body 10 is moved to the negative side in the x-axis direction, and the columnar portion 11 of the main body 10 is fitted into the recessed portion 21 of the fixing portion 20. At this time, the first limiting protrusions 14a to 14d limit the position of the columnar portion 11 relative to the recessed portion 21, so that the positioning protrusions 12a and 12b are fitted into the prescribed fitting grooves 22 and 23 when the columnar portion 11 is fitted into the recessed portion 21.

[0041] For example, if the moving direction of the main body 10 is inclined with respect to the x-axis direction, the positions of the positioning protrusions 12a and 12b of the main body 10 may be offset with respect to the fitting grooves 22 and 23 of the fixing portion 20. In addition, the diameter of the columnar portion 11 of the main body 10 is smaller than the diameter of the recessed portion 21 of the fixing portion 20. Therefore, if the central axis of the columnar portion 11 of the main body 10 and the central axis of the recessed portion 21 of the fixing portion 20 are offset, for example, even if one positioning protrusion 12b enters the intended fitting groove 23, the other positioning protrusion 12a may enter the adjacent groove of the intended fitting groove 22.

[0042] In order to solve such a problem, in the present embodiment, a plurality of first limiting protrusions 14a to 14d are provided on the main body 10. In the present embodiment, the plurality of first limiting protrusions 14a to 14d are provided on the main body 10 in this way, so that when the columnar portion 11 is fitted into the recessed portion 21, the position of the columnar portion 11 relative to the recessed portion 21 is restricted. Therefore, it is possible to suppress the position of the positioning protrusions 12a, 12b from being offset relative to the fitting grooves 22, 23. That is, it is possible to suppress the central axis of the columnar portion 11 of the main body 10 and the central axis of the recessed portion 21 of the fixing portion 20 from being offset, resulting in the positioning protrusions 12a, 12b fitting into the unintended fitting grooves 22, 23. In other words, when the columnar portion 11 is engaged with the recess 21, at least one of the plurality of first limiting protrusions 14a to 14d abuts against the inner circumferential surface of the recess 21, thereby suppressing the eccentricity between the columnar portion 11 and the recess 21, and thus the columnar portion 11 can be guided in such a way that the positioning protrusions 12a, 12b are engaged with the engagement grooves 22, 23.

[0043] After that, the main body 10 is further moved toward the negative side in the x-axis direction, as shown in FIG. Figure 4CAs shown, the columnar portion 11 of the main body 10 is fitted into the recessed portion 21 of the fixing portion 20. Thus, the main body 10 is fixed to the fixing portion 20. Thereafter, the fixing portion 20 to which the main body 10 is fixed is mounted on a windshield (not shown). Specifically, the fixing portion 20 to which the main body 10 is fixed is fixed to the windshield of the vehicle by mounting the mounting surface 25 of the fixing portion 20 on the windshield of the vehicle using the adhesive member 26.

[0044] In this embodiment, if Figure 5 As shown in the cross-sectional view of , the angle of the main body 10 relative to the fixing portion 20 is adjusted by fitting the positioning protrusions 12a, 12b with the fitting grooves 22, 23 of the fixing portion 20. Figure 5 In the structural example shown, the main body 10 is mounted at an angle of 30° on a reference surface 29 (see Figure 3 ). In addition, the plurality of second restricting protrusions 15a to 15d are arranged inside the recess 21. Thus, it is possible to suppress displacement of the main body 10 relative to the fixing portion 20. Therefore, the main body 10 can be stably fixed to the fixing portion 20.

[0045] In addition, if Figure 5 As shown, the plurality of second limiting protrusions 15a to 15d may also be in a shape lying horizontally in the circumferential direction of the outer peripheral surface of the columnar portion 11 in a cross section perpendicular to the central axis 30, that is, in a cross section cut in the yz plane. In this way, by making the cross-sectional shape of the second limiting protrusions 15a to 15d a lying shape, in other words, a flat shape, and further a mountain shape biased in one direction, the strength of the second limiting protrusions 15a to 15d can be improved. Similarly, the plurality of first limiting protrusions 14a to 14d may also be in a shape lying horizontally in the circumferential direction of the outer peripheral surface of the columnar portion 11 in a cross section cut in the yz plane.

[0046] In addition, in the present embodiment, by setting the cross-sectional shape of the second limiting protrusions 15a to 15d to a shape lying horizontally in the y-axis direction, the manufacture of the main body 10 can be facilitated. That is, the surface of the second limiting protrusions 15a and 15c on the positive side in the z-axis direction (the surface constituting the second limiting protrusion) is made parallel to the xy plane, and the surface of the second limiting protrusions 15b and 15d on the negative side in the z-axis direction (the surface constituting the second limiting protrusion) is made parallel to the xy plane. By setting such a structure, when the main body 10 is injection molded using two molds, the two molds can be pulled out to the positive side and the negative side in the y-axis direction, so that the manufacture of the main body 10 can be facilitated. Similarly, with respect to the plurality of first limiting protrusions 14a to 14d, the cross-sectional shape of the plurality of first limiting protrusions 14a to 14d can also be set to a shape lying horizontally in the y-axis direction.

[0047] As described above, the fixing structure 1 involved in the present embodiment includes: a main body 10 having a cylindrical columnar portion 11; and a fixing portion 20 having a cylindrical recess 21 for fitting the columnar portion 11. On the inner peripheral surface of the recess 21, fitting grooves 22 and 23 are formed at predetermined angular intervals at positions facing each other with the central axis of the recess 21 as the center. Positioning protrusions 12a and 12b for positioning that can fit into the fitting grooves 22 and 23 and a plurality of first limiting protrusions 14a to 14d whose height is lower than the positioning protrusions 12a and 12b are formed on the outer peripheral surface of the columnar portion 11. In addition, the fixing structure 1 involved in the present embodiment is configured so that the angle of the main body 10 relative to the fixing portion 20 can be adjusted by selecting the fitting grooves 22 and 23 for fitting the positioning protrusions 12a and 12b of the columnar portion 11. Furthermore, the first restricting protrusions 14 a to 14 d are configured to restrict the position of the columnar portion 11 relative to the recessed portion 21 so that the positioning protrusions 12 a and 12 b are fitted into the predetermined fitting grooves 22 and 23 when the columnar portion 11 is fitted into the recessed portion 21 .

[0048] Thus, in the present embodiment, the main body 10 is provided with a plurality of first limiting protrusions 14a to 14d, so that the position of the columnar portion 11 relative to the recess 21 is limited when the columnar portion 11 is fitted into the recess 21. Therefore, it is possible to suppress the position of the positioning protrusions 12a, 12b from being offset relative to the fitting grooves 22, 23. In other words, when the columnar portion 11 is fitted into the recess 21, at least one of the plurality of first limiting protrusions 14a to 14d abuts against the inner peripheral surface of the recess 21, thereby guiding the columnar portion 11 in a manner that the positioning protrusions 12a, 12b are fitted into the fitting grooves 22, 23. Therefore, according to the present embodiment, it is possible to provide a fixing structure that can easily perform the operation of installing the camera device on the vehicle while adjusting the installation angle.

[0049] As mentioned above, the present invention has been described based on the above-mentioned embodiments, but the present invention is not limited to the structures of the above-mentioned embodiments, and naturally includes various modifications, corrections, and combinations that can be made by those skilled in the art within the scope of the invention of the claims of the present application.

[0050] This application claims the benefit of priority based on Japanese patent application No. 2022-199476 filed on December 14, 2022, the disclosure of which is incorporated herein in its entirety.

[0051] Industrial Applicability

[0052] The fixing structure according to the present disclosure can be widely used as a structure for mounting an imaging device such as a drive recorder on a vehicle.

[0053] Description of Reference Numerals

[0054] 10 Main body

[0055] 11 Column

[0056] 12a, 12b positioning protrusions

[0057] 14a, 14b, 14c, 14d first limiting protrusions

[0058] 15a, 15b, 15c, 15d second limiting protrusions

[0059] 20Fixed part

[0060] 21 recess

[0061] 22, 23 fitting slots.

Claims

1. A fixing structure comprising: The main body has a cylindrical columnar portion; as well as The fixing portion includes a cylindrical recess into which the columnar portion is fitted, The inner peripheral surface of the recess is provided with fitting grooves at predetermined angular intervals. A positioning protrusion for positioning that can be engaged with the engagement groove and a plurality of first limiting protrusions whose height is lower than that of the positioning protrusion are formed on the outer peripheral surface of the columnar portion. By selecting the fitting groove into which the positioning protrusion of the columnar portion fits, the angle of the main body portion relative to the fixing portion can be adjusted. The first restriction protrusion restricts the position of the columnar portion relative to the recessed portion when the columnar portion is fitted into the recessed portion so that the positioning protrusion fits into a predetermined fitting groove.

2. The fixing structure according to claim 1, wherein: The first restricting protrusion restricts eccentricity between the main body and the fixing portion when the columnar portion is engaged with the recess.

3. The fixing structure according to claim 1 or 2, wherein: When the columnar portion is fitted into the recessed portion, a gap is formed between the top of the first restricting protrusion and the inner peripheral surface of the recessed portion.

4. The fixing structure according to claim 1 or 2, wherein: The radius of the recessed portion is larger than the sum of the radius of the outer peripheral surface of the columnar portion and the height of the first restricting protrusion.

5. The fixing structure according to claim 1 or 2, wherein: The first restricting protrusion has a cross section perpendicular to the central axis of the columnar portion and has a shape lying in a circumferential direction of the outer peripheral surface of the columnar portion.

6. The fixing structure according to claim 1 or 2, wherein: The surface constituting the first restricting protrusion is aligned with a demolding direction when the main body is molded.

7. The fixing structure according to claim 1 or 2, wherein: A mark is formed on the outer peripheral surface of the fixing portion at a position corresponding to the fitting groove formed on the inner peripheral surface of the recessed portion.

8. The fixing structure according to claim 1 or 2, wherein: The first limiting protrusion is formed on the first end side of the columnar portion that is engaged with the recessed portion. A second restricting protrusion is further formed on a second end side of the columnar portion opposite to the first end side, the second restricting protrusion restricting and stabilizing the position of the columnar portion relative to the recess when the columnar portion is fitted into the recess.

9. The fixing structure according to claim 1 or 2, wherein: The first limiting protrusion is formed on the first end side of the columnar portion that is engaged with the recessed portion. A second limiting protrusion is further formed on a second end side of the columnar portion opposite to the first end side, and the second limiting protrusion limits the position of the columnar portion relative to the recessed portion to stabilize the position when the columnar portion is engaged with the recessed portion. The second limiting protrusion is configured such that its height is greater than that of the first limiting protrusion.

Images