Vehicle-mounted device

Abstract

An in-vehicle device (91) is provided with a main body section (1), a base section (2), a magnet (23), and a magnetic body (17). The main body part (1) has a shape having a long side in a first direction and is used for inputting or outputting an electric signal. The base portion (2) is attached to a vehicle-side attachment member. A magnet (23) is provided on one of the main body part (1) and the base part (2). A magnetic body (17) is provided on the other of the main body part (1) and the base part (2). In a cross-section orthogonal to the first direction, the main body section (1) has an outer peripheral surface (11a) that is at least an arc-shaped curved surface, and the radius of the curved surface is a first radius (R1). The base section (2) has an inner peripheral surface (21a) which is recessed inward to form a curved surface having a first radius (R1). The outer peripheral surface (11a) and the inner peripheral surface (21a) are magnetically attracted by the magnetic force of the magnet (23), and the main body part (1) and the base part (2) are integrated.

Description

Technical Field

[0001] This invention relates to vehicle-mounted equipment. Background Technology

[0002] Patent Document 1 describes a dashcam as an in-vehicle device, which includes a main body with a camera, a support portion protruding upward from the main body, and a plate-shaped base formed at the top of the support portion. The dashcam is mounted on the windshield by attaching the base to the inner surface of the windshield with double-sided tape.

[0003] In the support portion of the vehicle-mounted device described in Patent Document 1, the arm portion, divided into a main body side and a base side, engages with the support portion around a horizontal axis, allowing it to rotate vertically. It can be secured in any rotational position using a nut. This allows the user to adjust the optical axis direction of the camera relative to the windshield by rotating it vertically.

[0004] Prior art literature

[0005] Patent documents

[0006] Patent document 1: Japanese Patent Application Publication No. 2020-199800. Summary of the Invention

[0007] In the prior art as described in Patent Document 1, the optical axis direction can be adjusted by rotating up and down, but the base and the main body are essentially one piece. Therefore, after the base is installed on the windshield, it is difficult to photograph the view outside the vehicle and the occupants inside the vehicle. From the perspective of improving usability, there is room for improvement.

[0008] The purpose of this invention is to provide an easy-to-use vehicle-mounted device.

[0009] This embodiment relates to a vehicle-mounted device, comprising: a main body having a shape with a first direction as its long side for inputting or outputting electrical signals; a base for mounting onto a vehicle-side mounting component; a magnet disposed on one of the main body and the base; and a magnetic body disposed on the other of the main body and the base. The main body has an outer peripheral surface with at least an arc-shaped curved surface in a cross-section orthogonal to the first direction, the radius of which is a first radius. The base has an inner peripheral surface with a curved surface recessed inward to the first radius. The outer peripheral surface and the inner peripheral surface are magnetically attracted by the magnetic force of the magnet, thereby integrating the main body and the base.

[0010] According to this embodiment, a vehicle-mounted device with good usability can be provided. Attached Figure Description

[0011] Figure 1AThis is a front view of the vehicle-mounted device 91 of Embodiment 1 in this implementation.

[0012] Figure 1B This is a top view of the vehicle-mounted equipment 91.

[0013] Figure 1C This is the right view of the vehicle-mounted device 91.

[0014] Figure 2A This is a front view of the main body 1 of the vehicle-mounted equipment 91.

[0015] Figure 2B This is a horizontal cross-sectional view of the main body 1 at the position passing through the optical axis CLc.

[0016] Figure 2C yes Figure 2B A cross-sectional view of the S2C-S2C position.

[0017] Figure 3A This is the front view of the base section 2 of the vehicle-mounted equipment 91.

[0018] Figure 3B This is a right view of the base 2 of the vehicle-mounted equipment 91.

[0019] Figure 3C yes Figure 3B A cross-sectional view of the base portion 2 at the S3Ba-S3Ba position.

[0020] Figure 3D yes Figure 3A A cross-sectional view of the base portion 2 at the position S3Bb-S3Bb.

[0021] Figure 4A This is a front view of the vehicle-mounted device 91A of Embodiment 2 in this implementation.

[0022] Figure 4B This is a right view of the vehicle-mounted equipment 91A.

[0023] Figure 4C yes Figure 4B Enlarged view of the Z section in the image.

[0024] Figure 4D Is with Figure 4B The diagram corresponds to the enlarged view of the Z part in the diagram, and is a modified example of the outer locking part 18 and the inner locking part 24.

[0025] Figure 5A This is a front view of the vehicle-mounted device 91B of Embodiment 3 in this implementation.

[0026] Figure 5B This is an oblique cross-sectional view of the base portion 2B of the vehicle-mounted equipment 91B.

[0027] Figure 6A This is a front view of the vehicle-mounted device 91C of Embodiment 4 in this implementation.

[0028] Figure 6B This is a left view of the vehicle-mounted equipment 91C.

[0029] Figure 7A This is an exploded perspective view of the vehicle-mounted device 91D of Embodiment 5 in this embodiment, viewed from the upper left front.

[0030] Figure 7B This is a 3D view of the vehicle-mounted equipment 91D viewed from the upper left front.

[0031] Figure 7C This is a schematic cross-sectional view showing the engagement state of the base portion 2D and the stop member 3 with the frame 11D in the vehicle-mounted equipment 91D.

[0032] Figure 7D This is a longitudinal cross-sectional view showing the engagement state of the stop 3 and the frame 11D in the vehicle-mounted equipment 91D.

[0033] Figure 8A This is a perspective view showing the stop 3A provided by the vehicle-mounted device 91E of Embodiment 6 in this embodiment.

[0034] Figure 8B This is a longitudinal cross-sectional view showing the engagement state between the stop 3A and the frame 11E when the stop 3A is in the first position.

[0035] Figure 8C This is a longitudinal cross-sectional view showing the engagement state between the stop 3A and the frame 11E when the stop 3A is in the second position. Detailed Implementation

[0036] This embodiment will be described using the vehicle-mounted devices 91, 91A to 91C of Examples 1 to 4.

[0037] (Example 1)

[0038] Reference Figures 1A to 3D The structure of the vehicle-mounted device 91 in Embodiment 1 will be explained. Figure 1A This is a front view of the vehicle-mounted device 91 in Embodiment 1 of this implementation. Figure 1B This is a top view of the vehicle-mounted equipment 91. Figure 1C This is the right view of the vehicle-mounted device 91. Figure 2A This is a front view of the main body 1 of the vehicle-mounted equipment 91. Figure 2B This is a horizontal cross-sectional view of the main body 1 at the position passing through the optical axis CLc. Figure 2C yes Figure 2B A cross-sectional view of the S2C-S2C position. Figure 3AThis is the front view of the base section 2 of the vehicle-mounted equipment 91. Figure 3B This is a right view of the base 2 of the vehicle-mounted equipment 91. Figure 3C yes Figure 3B A cross-sectional view of the base portion 2 at the S3Ba-S3Ba position. Figure 3D yes Figure 3A A cross-sectional view of the base portion 2 at position S3Bb-S3Bb. For ease of explanation, the vertical and horizontal directions are shown in the figure. Figure 1A The direction indicated by the arrow is correct. Also, what's ahead is... Figure 1A The front of the paper is facing forward, and the back is... Figure 1A The inside side of the paper.

[0039] The vehicle-mounted device 91 is installed on a vehicle such as a car. In this example, the vehicle-mounted device 91 is a vehicle-mounted camera, for example, installed on the inside of the windshield of a car, to capture the view in front of the vehicle through the windshield.

[0040] The vehicle-mounted equipment 91 has a main body 1 and a base 2. For example... Figures 1A to 2A As shown, the main body 1 has a generally cylindrical frame 11 with radius R1, centered on an axis CL1 extending in the left-right direction as a first direction. The frame 11 has its long side in the left-right direction and radius R1 as the first radius. The frame 11 is formed of resin and has a slightly forward-annular protrusion 12 on its left side. A socket 16 is exposed on the right side 111 of the frame 11 (see reference). Figure 2B A plug 81 for a connecting cable 8 is detachably mounted on the socket 16. This connecting cable 8 has a plug 81 for connecting to external devices and a flexible cord 82. Figure 2C As shown, the outer peripheral surface 11a of the frame 11 is formed as a cylindrical surface with radius R1 centered on axis CL1.

[0041] like Figure 2B As shown, the main body 1, inside the frame 11, includes a camera unit 13, a signal processing unit 14, a socket 16, and a magnet 17. The camera unit 13 takes pictures of the scene in front of it with the axis of the protrusion 12 as its optical axis CLc. The signal processing unit 14 is connected to the camera unit 13 and outputs the image captured by the camera unit 13 as an image signal. The image signal output by the signal processing unit 14 is transmitted to an external device via the connecting cable 8 through the lead wire 15 and the socket 16.

[0042] Magnetic body 17 Figure 2B and Figure 2CAs shown, it is a tubular component formed of a metal that can be magnetically attracted. In this embodiment, the magnet refers to either a permanent magnet or an electromagnet. Furthermore, the permanent magnet is made of a hard magnetic material, but in this embodiment, the magnetic material refers to a metal (soft magnetic material) that can be magnetically attracted. The magnetic material 17 is housed and fixed inside the frame 11, with its outer peripheral surface along or close to the inner peripheral surface of the frame 11.

[0043] like Figure 1A , Figure 1B as well as Figures 3A to 3D As shown, the base portion 2 has a base 21, which is formed into a generally box-shaped rectangular form when viewed from above. The base 21 is formed of resin. The upper wall 21c of the base 21 (see reference) Figure 1B An adhesive component 22 is installed on the substrate 21, which is used to attach the substrate 21 to the mounted component on the side of the vehicle, such as the windshield.

[0044] like Figures 3A to 3D As shown, a contact wall surface 21a, which is recessed upwards, is formed on the lower wall 21b of the substrate 21. Figure 3D As shown, the contact wall surface 21a has a cylindrical surface with a radius R2 centered on the axis CL1. The radius R2 is set to be equal to the radius R1 of the outer peripheral surface of the frame 11 of the main body part 1. That is, the contact wall surface 21a of the base part 2 can be tightly attached to the outer peripheral surface of the frame 11.

[0045] Magnets 23 are housed and fixed inside the base 21. Figure 3D As shown, the cross-sectional shape of the magnet 23 is formed as an arc, and it is fixed along the inner surface of the contact wall 21a, or close to the inner surface.

[0046] In the vehicle-mounted device 91, the main body 1 and the base 2 have the aforementioned structure. When the base 2 is brought close to the main body 1, the magnetic body 17 of the main body 1 is attracted to the base 2 due to the magnetic force of the magnet 23 of the base 2. This allows the frame 11 of the main body 1 to magnetically adhere to the base 21 of the base 2. In this magnetic adhesion, by aligning the direction of the axis CL1 of the frame 11 with the axis of the contact wall surface 21a, which serves as the inner peripheral surface of the base 2, the base 2 and the main body 1 can be tightly fitted together through surface contact and integrated.

[0047] The main body 1 and the base 2 can be magnetically adsorbed in a free position within the range where the base 2 does not interfere with the protrusion 12. Figure 1A and Figure 1B The image shows the base portion 2 magnetically adsorbed to the main body portion 1 with its right end position aligned with the right end position of the main body portion 1.

[0048] The magnetic attraction force of the main body 1 to the base 2 is set to such a degree that, when the base 2 is attached to the windshield of the vehicle and the main body 1 and base 2 are magnetically attracted, the main body 1 will not fall off at least during normal use of the vehicle, and the main body 1 can be manually detached from the base 2. The strength of the magnetic attraction force is optimized by selecting the material of the magnet 23 and setting the distance between the magnet 23 and the magnetic body. The latter setting includes the fixing position of the magnetic body 17 inside the frame 11, the fixing position of the magnet 23 inside the base 21, and the thickness of the frame 11 and the base 21, etc.

[0049] Because the vehicle-mounted device 91 has the above-described structure, the base portion 2 can be magnetically attached to any position on the outer peripheral surface of the main body portion 1 without interfering with the protrusion 12. Furthermore, the main body portion 1 can be detached from the base portion 2 by hand, overcoming the magnetic attraction force. Therefore, after the base portion 2 is installed on a component such as a windshield, the attachment position of the main body portion 1 relative to the base portion 2 can be changed independently and freely, either along the extension direction of the axis CL1 (see reference 1). Figure 1A The arrow DR1 in the diagram can be changed, or it can be rotated in the direction of rotation around axis CL1 (see reference). Figure 1C The arrow DR2 in the text has been changed.

[0050] exist Figure 1C In the middle, the outline of the protrusion 12 is drawn with double-dotted lines at 90° intervals, thus showing that the magnetic adsorption position of the main body 1 relative to the base 2 can be arbitrarily selected within a relative 360° range around the axis CL1.

[0051] That is, the vehicle-mounted device 91 can independently adjust the orientation of the optical axis CLc relative to the mounted component by rotating it vertically and moving it horizontally, thus further improving its ease of use.

[0052] Furthermore, after the base 2 is installed on the windshield or other mounted components, the main body 1 can be manually attached to and detached from the base 2. Therefore, even if the base 2 is mounted on the mounted component, the main body 1 can be removed from the base 2, allowing for free capture of views beyond the vehicle's front and inside the vehicle, further enhancing usability.

[0053] (Example 2)

[0054] The vehicle-mounted device 91A of Embodiment 2 has a main body 1A and a base 2A. Compared with the vehicle-mounted device 91 of Embodiment 1, the shape of the contact portion between the main body 1A and the base 2A is different. Hereinafter, this difference will be the main focus of the discussion. Figures 4A to 4C The 91A vehicle-mounted equipment is described. Figure 4A This is a front view of the vehicle-mounted device 91A of Embodiment 2 in this implementation. Figure 4B This is a right view of the vehicle-mounted equipment 91A. Figure 4C yes Figure 4B Enlarged view of the Z section in the image.

[0055] The frame 11A of the main body 1A differs from the frame 11 of Embodiment 1 in that it has an outer engaging portion 18 in the circumferential direction of its outer peripheral surface, excluding the protrusion 12, and has the same other structures such as a magnetic body 17. Figure 4B and Figure 4C As shown, the outer engaging portion 18 is formed on the outer periphery of the frame 11A, and is a concave-convex shape portion with a generally sinusoidal cross-section that extends parallel to the axis CL1A of the frame 11A. In this example, the outer engaging portion 18 is formed over the entire circumference of approximately the right half of the frame 11A in the left-right direction. In other words, in the vehicle-mounted device 91A, one of the outer peripheral surface 11Aa of the frame 11A and the inner peripheral surface 21Aa of the base 21A has a plurality of protrusions extending in a first direction (left-right direction) and formed at predetermined angular intervals in the circumferential direction, and the other has a plurality of recesses extending in the first direction and formed at the same angular intervals in the circumferential direction that can engage with the protrusions. Furthermore, the main body portion 1A and the base portion 2A can engage the protrusions and recesses through magnetic attraction, thereby achieving integration.

[0056] On the other hand, the base portion 2A housing the magnet 23 has a contact wall surface 21Aa on the base body 21A that corresponds to the contact wall surface 21a of the base portion 2. The contact wall surface 21Aa has an inner engagement portion 24 that forms a concave-convex engagement with the outer engagement portion 18 of the main body portion 1A. Specifically, the inner engagement portion 24 has a generally sinusoidal shape in the cross-section of the base portion 2A with the same angular spacing and height (amplitude) as the outer engagement portion 18, and in Figure 4B It is formed by a concave-convex shape extending parallel to the axis CL1A. Therefore, as... Figure 4C As shown, when the main body 1A and the base 2A are magnetically attracted, the outer engaging part 18 of the main body 1A and the inner engaging part 24 of the base 2A are tightly attached and engaged through surface contact.

[0057] Therefore, in the vehicle-mounted device 91A, the rotational position of the main body 1A relative to the base 2 around the axis CL1A is determined by the angular spacing of the concave and convex (peak and valley) parts of the inner engaging part 24 and the outer engaging part 18. This results in high reproducibility of the rotational position when the main body 1A is removed from the base 2 and then magnetically attached again, making it suitable for scenarios where the main body 1A is repeatedly magnetically attached to the base 2A.

[0058] Furthermore, with the main body 1A and the base 2A magnetically attached, even if an unexpected external force is applied to the main body 1A, the main body 1 will not shift in the rotational direction. Thus, the vehicle-mounted device 91 is less prone to shooting range shifts due to external forces, exhibiting high reliability as a camera.

[0059] The shapes of the outer locking part 18 and the inner locking part 24 may not be adopted. Figure 4C It is roughly sinusoidal in shape, as shown. For example, it could be like... Figure 4D As shown, the outer engaging portion 18 has a generally square wave shape with a recess 18b, and the inner engaging portion 24 has a gentle peak 24b that can enter the recess 18b of the outer engaging portion 18. The protrusion height of the peak 24b is set to be much smaller than the depth of the recess 18b. In this case, since the peak 24b is small in height and has a gentle peak shape, the external force required to rotate the main body 1A, which is magnetically adsorbed to the base portion 2A, in the magnetically adsorbed state is small. Therefore, when the vehicle-mounted device 91A is installed on a vehicle or the like, it is convenient to adjust the rotation of the optical axis CLc in the vertical direction by hand.

[0060] The concave-convex relationship between the outer engaging portion 18 and the inner engaging portion 24 can also be reversed in shape. That is, the inner engaging portion 24 can be approximately square-shaped and wavy, and the outer engaging portion 18 can have a peak that can enter the approximately square-shaped wavy recess of the inner engaging portion 24.

[0061] (Example 3)

[0062] The vehicle-mounted device 91B of Embodiment 3 has a main body 1B and a base 2B. Compared with the vehicle-mounted device 91A of Embodiment 2, it has an outer engaging portion 18B and an inner engaging portion 24B with shapes different from the outer engaging portion 18 and the inner engaging portion 24. Hereinafter, reference will be made mainly to this difference. Figure 5A and Figure 5B The 91B vehicle-mounted equipment is described. Figure 5A This is a front view of the vehicle-mounted device 91B in Embodiment 3 of this implementation. Figure 5B This is a perspective cross-sectional view of the base portion 2B of the vehicle-mounted equipment 91B.

[0063] like Figure 5A and Figure 5B As shown, the outer engaging portion 18B of the main body 1B in the vehicle-mounted device 91B has a shape that, based on the shape of the outer engaging portion 18 of the main body 1A, also has a shape with added circumferential grooves 18c formed in the circumferential direction. In this example, there are multiple (3) circumferential grooves 18c, which are formed at a predetermined interval along the axis CL1B of the frame 11B of the main body 1B.

[0064] Correspondingly, in the base portion 2B of the vehicle-mounted device 91B, the inner engaging portion 24B of the base 21B is formed by adding a circumferential rib 24c that engages with the circumferential groove 18c, based on the shape of the inner engaging portion 24 of the base portion 2A. In this example, the number of circumferential ribs 24c is the same as that of the circumferential groove 18c (3), and they are formed at the same spacing as the circumferential groove 18c.

[0065] Therefore, in the vehicle-mounted device 91B, the position of the main body 1B relative to the base 2B along the axis CL1B can be precisely determined according to the spacing of the circumferential grooves 18c. Figure 5A and Figure 5B In the case of the three peripheral grooves 18c shown, the base portion 2B can be positioned in the left-right direction relative to the main body portion 1B. Figure 5A The leftmost position and two positions offset to the right are used for positioning, for a total of three positions.

[0066] Thus, in the vehicle-mounted device 91B, the position of the main body 1B relative to the base 2B in the direction of axis CL1B (left-right direction) is determined by a pre-set predetermined position. Therefore, when the main body 1B is removed from the base 2B and then magnetically attached again, the position in the direction of axis CL1B is highly reproducible, making it suitable for scenarios where magnetic attachment is repeated.

[0067] (Example 4)

[0068] Next, the vehicle-mounted device 91C of Embodiment 4 will be described. In the above-described vehicle-mounted device 91, the main body 1, under the action of magnetic attraction relative to the base 2, has a constant radius R1 in a cross-section (cross section) orthogonal to the axis CL1 of the main body 1 (refer to...). Figure 2C ), and is held in contact with and maintained by the outer abutting surface of the circumferential surface having the radius R1 and the inner abutting surface.

[0069] In contrast, in the vehicle-mounted device 91C of Embodiment 4, the inner abutment surface 25 of the base 21C of the base portion 2C and the outer abutment surface 19 of the frame 11C of the main body portion 1C are made of... Figure 6B The frame 11C shown has a curved surface with radius Rb in its cross-section, which varies along the axis CL1C. Furthermore, the inner abutment surface 25 and the outer abutment surface 19 are in surface contact through magnetic attraction between the magnet housed and fixed to the base portion 2C and the magnetic body housed and fixed within the frame 11C. Hereinafter, radius Ra will be referred to as the axial radius, and radius Rb will be referred to as the circumferential radius Rb. Since the circumferential radius Rb corresponds to radius R1 in Embodiment 1, if it is taken as the first radius, then the axial radius Ra is the second radius.

[0070] For example, Figure 6B The inner abutment surface 25 and the outer abutment surface 19 shown have circumferential radii Rb that are not fixed in the direction of the axis CL1C, but rather vary according to... Figure 6A The barrel-shaped surface shown has a varying axial radius Ra.

[0071] In the vehicle-mounted device 91C, regarding the relationship between its axial radius Ra and circumferential radius Rb, the axial radius Ra is greater than the circumferential radius Rb. Furthermore, the center of the circumferential radius Rb is located on the axis CL1C, and the center of the axial radius Ra can also be... Figure 6A The image shown is not on axis CL1C. This structure allows the main body 1C to be magnetically attached to the base 2C in any rotational position around axis CL1C, thus enabling installation by adjusting the direction of the optical axis CLc in the vertical direction. Furthermore, in the vehicle-mounted device 91C, the main body 1C can be manually attached to and detached from the base 2C by overcoming the magnetic attachment force. Therefore, the detached main body 1C can freely capture images of the view in front of the vehicle and the interior of the vehicle, further enhancing usability.

[0072] (Example 5)

[0073] Next, refer to Figures 7A to 7D The vehicle-mounted device 91D of Embodiment 5 will be described. Figure 7A This is an exploded perspective view of the vehicle-mounted device 91D of Embodiment 5 in this embodiment, viewed from the upper left front. Figure 7B This is a 3D view of the vehicle-mounted equipment 91D viewed from the upper left front. Figure 7C This is a schematic cross-sectional view showing the engagement state of the base portion 2D and the stop member 3 with the frame 11D in the vehicle-mounted equipment 91D. Figure 7D This is a longitudinal cross-sectional view showing the engagement state of the stop 3 and the frame 11D in the vehicle-mounted equipment 91D.

[0074] The difference between vehicle-mounted device 91D and vehicle-mounted device 91A of Embodiment 2 is that it also includes a stop member 3, etc. For example... Figure 7A As shown, the vehicle-mounted device 91D has a main body 1D, a base 2D, and a stop member 3. The base 2D is the same as the base 2A of the vehicle-mounted device 91A. The main body 1D has a frame 11D. The frame 11D differs from the frame 11A of the vehicle-mounted device 91A in that the right end of the outer engaging portion 18D, which has the same cross-sectional shape (concave-convex rib shape) as the outer engaging portion 18, is offset to the left, thus having a cylindrical end portion 11Dc at the right end where the outer engaging portion 18D is not formed. A radially protruding circumferential rib 11Db is formed on the outer peripheral surface of the cylindrical end portion 11Dc.

[0075] The stop member 3 has a base 31 and a ring portion 32. The base 31 is a portion that extends in a C-shape in cross-section. The ring portion 32 is a circumferentially closed annular portion formed at the right end of the base 31. That is, the base 31 has a notch 31a that cuts in along its own axis CL3 from the end opposite to the ring portion 32. The opening width of the notch 31a is set so that the base 21D of the base portion 2D can enter with almost no gap.

[0076] An inner engaging portion 311, shaped like a concave and convex rib, is formed on the inner circumferential surface of the base 31, capable of engaging with the outer engaging portion 18D of the frame 11D. An opening 32a is formed on the ring portion 32, which is a through hole centered on the axis CL3. A peripheral rib 321 and a peripheral groove 322 are formed on the inner surface of the opening 32a. The peripheral rib 321 protrudes radially inward (diameter decreases) and is formed along the entire circumference. The peripheral groove 322 is adjacent to the peripheral rib 321 and formed on the opposite side of the frame 11D, is radially recessed (diameter increases) and is formed along the entire circumference.

[0077] The stop 3 is positioned so that the axis CL3 coincides with the axis CL1D of the main body 1D, causing the inner engaging part 311 to engage and disengage from the outer engaging part 18D of the frame 11D, thereby enabling loading and unloading relative to the frame 11D (see reference). Figure 7A (See arrow DR3 in the image). When the base part 2D is installed on the frame 11D, the stop part 3 can be installed and removed from the frame 11D by adjusting the circumferential position of the stop part 3 so that the notch 31a is aligned with the position of the base part 2D.

[0078] Figure 7B The appearance of the stop 3 installed in the frame 11D is shown. Figure 7C The engagement state of the base portion 2D and the stop member 3 with the frame 11D is shown. For example... Figure 7C As shown, compared with the reference Figure 4D Similar to the example described, the peak height of the inner engaging portion 24D of the base portion 2D is much smaller than the recess depth of the outer engaging portion 18D of the frame 11D, thus allowing the circumferential position of the base portion 2D on the frame 11D to be changed and adjusted with a smaller force. On the other hand, the peak height of the inner engaging portion 311 of the stop 3 is approximately the same as the recess depth of the outer engaging portion 18D. Therefore, with the stop 3 installed on the frame 11D, it is substantially difficult to change or adjust its circumferential position by hand. Thus, after determining the circumferential position of the base portion 2D installed on the frame 11D (after determining the orientation of the optical axis CLc), as... Figure 7B The mounting stop 3 shown can prevent the base part 2D from shifting in the circumferential direction due to unexpected external forces after installation on the vehicle, that is, prevent the orientation of the optical axis CLc from changing.

[0079] When the stop 3 is pushed into the frame 11D at its maximum position, such as Figure 7D As shown, the circumferential rib 321 of the stop member 3 extends beyond the circumferential rib 11Db formed on the cylindrical end 11Dc of the frame 11D, and the circumferential rib 11Db is engaged with the circumferential groove 322 of the stop member 3. Therefore, the stop member 3 will not detach from the frame 11D unless the expected pull-out force is applied from the first position.

[0080] (Example 6)

[0081] Next, refer to Figure 8A and Figure 8B The vehicle-mounted device 91E of Embodiment 6 will be described. Figure 8A This is a perspective view showing the stop 3A provided by the vehicle-mounted device 91E of Embodiment 6 in this embodiment. Figure 8B This is a longitudinal cross-sectional view showing the engagement state between the stop 3A and the frame 11E when the stop 3A is in the first position. Figure 8C This is a longitudinal cross-sectional view showing the engagement state between the stop 3A and the frame 11E when the stop 3A is in the second position.

[0082] like Figure 8B As shown, the vehicle-mounted equipment 91E has a main body 1E, a base 2E, a stop 3A, and a cover 5.

[0083] The difference between the main body 1E and the vehicle-mounted equipment 91D is that, for example Figure 8B As shown, a cover 5 is installed on the right end of the frame 11E corresponding to the frame 11D; the other parts are the same. The cover 5 is detachable relative to the frame 11E and has a flange 51 extending radially outward in the installed state. The base portion 2E is the same as the base portion 2D.

[0084] like Figure 8A and Figure 8B As shown, the difference between stop 3A and stop 3 is that the inner engaging portion 311 is only formed on a part of the inner side of the base 31A, and the peripheral rib 321 consists of multiple discontinuously formed protrusions 321A. Stop 3A is installed on the frame 11E from the right side without the cover 5 installed, and then the cover 5 is installed on the frame 11E. When the stop 3A is installed on the frame 11E, it can be positioned at the leftmost first position (refer to...). Figure 8B ) and the second position on the far right (refer to) Figure 8C It moves between left and right directions.

[0085] In the first position, the protrusion 321A of the stop 3A passes over the circumferential rib 11Eb of the frame 11E and is located to its left. Therefore, unless a pull-out force is intentionally applied to the stop 3A to the right to cause the protrusion 321A to pass over the circumferential rib 11Eb, the stop 3A will remain in the first position. When the stop 3A is in the first position, the inner engaging portion 311 engages with the outer engaging portion 18E, thus restricting the circumferential movement of the stop 3A. That is, the circumferential position change of the base portion 2E is restricted.

[0086] When a pull-out force is applied to the stop 3A to the right, causing the protrusion 321A to pass over the circumferential rib 11Eb and move further to the right, the protrusion 321A will reach a second position abutting against the flange 51 of the cover 5. Thus, the rightward movement of the stop 3A in the second position is restricted. On the other hand, when the stop 3A is near the second position, the engagement between the inner engaging portion 311 and the outer engaging portion 18E is released. Therefore, the stop 3A can rotate freely about the axis CL1E of the frame 11E near the second position. Thus, the stop 3A can select a circumferential position to engage with the frame 11E in the second position, and move axially towards the first position from the determined circumferential position, thereby achieving engagement with the frame 11E.

[0087] As described above, by installing the stop 3, the vehicle-mounted device 91D can prevent the base portion 2D from shifting in its circumferential mounting position relative to the frame 11D. Therefore, after the vehicle-mounted device 91D is installed on a vehicle, the orientation of the optical axis CLc will not change unexpectedly, resulting in high installation reliability. Furthermore, by installing the stop 3A, the vehicle-mounted device 91E can not only prevent the base portion 2E from shifting in its circumferential mounting position relative to the frame 11E, but also easily change its circumferential mounting position by simply moving the axial position of the stop 3A from the usual first position to the second position. Therefore, the vehicle-mounted device 91E not only has high installation reliability but also improved convenience.

[0088] The method described in the above description is not limited to the structure described above. Modifications can be made without departing from the spirit of this embodiment to obtain modified examples.

[0089] The shape of the magnetic body 17 housed and fixed in the main body 1, 1A to 1E is not limited to a tubular shape. It may also have a slit, making the cross-section C-shaped. Alternatively, the magnetic body 17 may be configured as a group of multiple magnetic bodies arranged circumferentially at intervals, with the magnetic metal in an elongated shape extending along the axis CL1.

[0090] The shape of the magnets 23 housed and fixed in the base portions 2, 2A to 2E is not limited to an arc-shaped cross-section. Multiple magnets 23 may also be distributed along the contact wall surface 21a to form multiple magnet groups.

[0091] As in Embodiment 1, the vehicle-mounted device 91 is described as having a magnetic body 17 on the main body 1 side and a magnet 23 on the base 2 side, but the reverse is also possible. That is, a magnet 23 is provided on the main body 1 side and a magnetic body 17 is provided on the base 2 side. The same applies to the vehicle-mounted devices 91A to 91E in Embodiments 2 to 4.

[0092] In the vehicle-mounted device 91, the axial length of the base portion 2 is not limited to the example described above. For example, it can be the same length as the main body portion 1 within a range that does not interfere with the protrusion 12. This also applies to vehicle-mounted devices 91A to 91E. In the main body portion 1, the axial position of the camera unit 13 corresponding to the protrusion 12 is not limited to the leftward orientation described above. For example, it can also be located to the right, with the base portion 2 mounted on the left side of the main body portion 1. This also applies to vehicle-mounted devices 91A to 91E. That is, the axial position of the camera unit 13 in the main body portion 1, the mounting position of the base portion 2 relative to the main body portion 1, and the axial length are not limited in any way, as long as they are within a range that does not interfere with the protrusion 12 and the base portion 2. This also applies to the main body portions 1A to 1E and the base portions 2A to 2E.

[0093] In the vehicle-mounted device 91, the magnet 23 can also be an electromagnet. In this case, when the base part 2 is removed from the main body 1, the power to the magnet 23, which is an electromagnet, is turned off to eliminate the magnetic force. When the base part 2 is installed on the main body 1 and while maintaining the installed state, the power is turned on to generate the magnetic force. This also applies to vehicle-mounted devices 91A to 91E.

[0094] Thus far, the magnetic body 17 has been described as a metal (soft magnetic body) that can be magnetically attracted, but the magnetic body 17 can also be a magnet (permanent magnet or electromagnet). In other words, the magnetic attraction force acting between the magnet 23 and the magnetic body 17 can also be the magnetic attraction force generated between the magnets. That is, the vehicle-mounted device 91 can also replace the magnetic body 17 with a second magnet, and the base part 2 can be magnetically attracted to the main body part 1 by the magnetic attraction force generated between the magnet 23, which is the first magnet, and the second magnet 17. This also applies to vehicle-mounted devices 91A to 91E. In this way, stronger attraction can be achieved through magnetic attraction between the magnets, so the magnet 23 and the magnetic body 17, which is the magnet, can be reduced in size, thus saving space. In addition, even if the wall thickness of the frame 11 and the base 21 is increased, the same attraction force can be obtained, so it is suitable for situations where the main body part 1 and the base part 2 require higher strength.

[0095] The vehicle-mounted devices 91, 91A to 91E are not limited to the aforementioned vehicle-mounted cameras. For example, they may also be dashcams, communication devices, image display devices, various sensors, voice playback devices, information terminals, etc. Therefore, in the vehicle-mounted devices 91, 91A to 91E, the main body 1, 1A to 1C is a device for inputting or outputting electrical signals.

[0096] Industrial availability

[0097] According to this embodiment, a vehicle-mounted device with good usability can be provided.

Claims

1. A vehicle-mounted device, comprising: The main body has a shape with the first direction as its long side, and is used for inputting or outputting electrical signals; The base portion is used for mounting onto the component to be installed on the vehicle side; A magnet is disposed on one of the main body portion and the base portion; as well as A magnetic element is disposed on the other of the main body and the base. The main body has an outer peripheral surface with at least an arc-shaped curved surface in a cross-section orthogonal to the first direction, the radius of which is a first radius. The base portion has an inner circumferential surface that is recessed inward to form the first radius. The outer peripheral surface and the inner peripheral surface are magnetically attracted by the magnetic force of the magnet, so that the main body and the base are integrated.

2. The vehicle-mounted device according to claim 1, wherein, The first radius varies along the first direction, and the outer and inner circumferential surfaces, when viewed from a direction orthogonal to the first direction, are curved surfaces with a second radius, which is greater than the first radius.

3. The vehicle-mounted device according to claim 1, wherein, The first radius remains constant along the first direction.

4. The vehicle-mounted device according to claim 1, wherein, One of the outer peripheral surface and the inner peripheral surface has a plurality of protrusions, the plurality of protrusions extending along the first direction and formed at predetermined angular intervals in the circumferential direction. The outer peripheral surface and the inner peripheral surface each have a plurality of recesses, the plurality of recesses extending along the first direction and formed at the angular intervals in the circumferential direction. The main body and the base can be integrated by the engagement of the protrusion and the recess.

5. The vehicle-mounted device according to claim 4, wherein, One of the outer peripheral surface and the inner peripheral surface has a peripheral groove. The other of the outer peripheral surface and the inner peripheral surface has a peripheral rib that can engage with the peripheral groove. The main body and the base can be integrated through the engagement of the protrusion and the recess, and the engagement of the peripheral groove and the peripheral rib.

Images