Mounting structure with detachment mechanism for in-vehicle device, and leaf spring

Abstract

Provided are a mounting structure for an in-vehicle device, the mounting structure having improved vibration resistance, and the mounting structure. When the vehicle-mounted device (18) is mounted on the mounting base (12), the base-side pivot center position (P1) is disposed at a position shifted toward the lower side of the vehicle with respect to the mounting base-facing area (Z2). The screw tip pressing position (P2) is disposed on the front side (upper side of the vehicle) of the mounting base (12) in the sliding direction with respect to the projection contact position (P3). When the base (21) with the plate spring is observed from the direction orthogonal to the plate surface of the mounting base (12), the plate spring is fixed on the mounting base (12). The plate spring left and right pieces (16b, 16c) are disposed at a position such that at least a portion of the plate spring left and right piece facing region (Z1) covers the screw tip pressing position (P2), or at a position such that at least a portion of the plate spring left and right piece facing region (Z1) is farther than the screw tip pressing position (P2) with respect to the protrusion contact position (P3).

Description

Technical Field

[0001] The present invention relates to a mounting structure for mounting a vehicle-mounted device in a detachable manner to a mounting base fixed on the side of the windshield of a vehicle facing inward (inside the passenger compartment), a mounting structure for the vehicle-mounted device, and a leaf spring used in the mounting structure. Background Technology

[0002] As a conventional mounting structure for mounting a vehicle-mounted device detachably to the interior side of the windshield of a vehicle, there exists a mounting structure for an interior rearview mirror (optical mirror, electronic mirror) as described in Patent Document 1. This mounting structure has the following configuration: the base at the end of the support member of the interior rearview mirror engages with the mounting base fixed to the windshield via a leaf spring, and a threaded component screwed into the base acts between the leaf spring and the mounting base. By tightening the threaded component, the engagement force of the leaf spring relative to the mounting base is increased, thereby utilizing the elastic engagement between the mounting base and the leaf spring to mount the interior rearview mirror to the mounting base. According to this mounting structure, in the event of a vehicle accident or similar incident, if a predetermined force is applied to the mirror body due to a collision between the occupant's head and the mirror body, the elastic engagement is released, causing the interior rearview mirror to detach from the mounting base, thereby ensuring the safety of the occupant.

[0003] Apart from Patent Document 1, regardless of whether a leaf spring-based elastic fit is used, there are, for example, Patent Documents 2 to 5 that describe the structure of mounting a rearview mirror fixed to a mounting base on the inner side of the windshield of a vehicle.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent No. 6935487

[0007] Patent Document 2: Japanese Patent No. 6870489

[0008] Patent Document 3: Japanese Patent No. 7122561

[0009] Patent Document 4: U.S. Patent No. 5820097

[0010] Patent Document 5: U.S. Patent No. 3928894 Summary of the Invention

[0011] The problem the invention aims to solve

[0012] The rearview mirror described in Patent Document 1 has the following structure: one end of the support member is connected to the base via a base-side pivot, and the other end of the support member is connected to the mirror body via a vehicle-mounted device-side pivot (mirror body-side pivot). The height of the mirror body can be adjusted by tilting the support member in the forward / backward direction around the base-side pivot, and the angle of the mirror body can be adjusted by tilting the mirror body in the up, down, left, and right directions around the vehicle-mounted device-side pivot. This allows the mirror body to be adjusted to a posture (height and angle) easily visible to the driver.

[0013] Compared to mounting bases for passenger cars, the mounting bases for interior rearview mirrors used in large vehicles such as trucks and vans are mostly positioned higher on the windshield. When using the connecting structure described in Patent Document 1 (a structure in which the base and mirror body are connected by pivots at both ends of the support member) for mounting bases positioned at this higher location, the support member needs to be formed into an elongated strip so that the mirror body can be lowered to a height easily visible to the driver in order to adjust the mirror body to a position easily visible to the driver. Instead of this design, if the base is formed to extend downwards along the windshield, thus lowering the position of the pivot on the base side, the elongated shape of the support member can be prevented. However, according to the inventor's experiments, compared with the design described in Patent Document 1, which places the center position of the base-side pivot in a region of space orthogonally opposite to the plate surface of the mounting base, the design that lowers the position of the base-side pivot (the design that places the center position of the base-side pivot in a region of space orthogonally opposite to the plate surface of the mounting base that is offset towards the underside of the vehicle) is less resistant to vibration (i.e., the mirror body is prone to flutter when the vehicle is in motion).

[0014] The present invention was made in view of the above-mentioned problems, and its object is to provide a mounting structure for a vehicle-mounted device with improved vibration resistance and a leaf spring used in the mounting structure.

[0015] Solution for solving the problem

[0016] The present invention provides a mounting structure for detachably mounting a vehicle-mounted device to a mounting base fixed to the inner side of the windshield of a vehicle. This mounting structure includes: a base with a leaf spring, having a structure in which a leaf spring is mounted; a threaded member screwed into the base with the leaf spring; and a support member having a base-side pivot at one end connected to the base with the leaf spring, and connecting to the vehicle-mounted device at the other end. The leaf spring is configured such that the mounting base, fixed to the windshield, slides vertically upwards into and is housed within the space between the opposing left and right leaf spring plates, thereby allowing the mounting base to... The threaded component is screwed into the base with the leaf spring, and tightened in the state where the mounting base and the leaf spring are engaged. The tip of the threaded component is pressed against the surface of the mounting base fixed to the windshield facing the inside of the vehicle, creating an appropriate engaging force between the mounting base and the leaf spring, allowing the mounting base and the leaf spring to elastically engage. The base with the leaf spring has a protrusion that abuts against the surface of the mounting base. The center position of the pivot on the side of the base is defined as the center position of the pivot on the side of the base. The area facing the plate surface of the mounting base orthogonally is defined as the opposite side of the mounting base. The region is defined as follows: the position on the surface of the mounting base where the threaded part is pressed down is defined as the threaded part pressing position; the position on the surface of the mounting base where the protrusion abuts is defined as the protrusion abutting position; and the region where the left and right leaf springs face each other when viewed from a direction orthogonal to the plate surface of the mounting base is defined as the leaf spring left and right leaf spring opposing region. The positional relationships between the base side pivot center position, the opposite region of the mounting base, the threaded part pressing position, the protrusion abutting position, and the leaf spring left and right leaf spring opposing region are set such that, when the vehicle-mounted device is mounted on the mounting base using the mounting structure, the base side pivot center position is positioned relative to the mounting base. The mounting structure is configured such that the area opposite the base is offset towards the lower side of the vehicle, and the pressing position of the threaded member tip is positioned relative to the abutment position of the protrusion on the front side (upper side of the vehicle) of the sliding entry direction of the mounting base. Furthermore, when viewing the spring-loaded base from a direction orthogonal to the plate surface of the mounting base, the left and right leaf springs are positioned such that at least a portion (or all) of the opposing area of ​​the left and right leaf springs covers the pressing position of the threaded member tip, or such that at least a portion of the opposing area of ​​the left and right leaf springs is farther than the pressing position of the threaded member tip relative to the abutment position of the protrusion. The mounting structure is configured such that the vehicle-mounted device is elastically fitted onto the mounting base.Furthermore, when an external force exceeding a predetermined value is applied to the vehicle-mounted device in this installed state, the elastic engagement disengages, causing the vehicle-mounted device to detach from the mounting base. Thus, when the vehicle-mounted device is mounted on the mounting base using this mounting structure, at least a portion of the vibration (vibrating force or impending vibration force) received by the vehicle-mounted device from the base-side pivot is supported by the left and right leaf springs at a position opposite to the center position of the base-side pivot (the position in the sliding direction towards the mounting base relative to the protrusion abutment position, i.e., the front side (vehicle top side) of the sliding entry direction of the mounting base relative to the protrusion abutment position) with the protrusion abutment position as the fulcrum. That is, the center position of the base-side pivot becomes the point of force receiving vibration, the protrusion abutment position becomes the fulcrum, and the positions of the left and right leaf springs become the points of action supporting the vibration. At this time, the left and right leaf springs are positioned such that at least a portion of the opposing areas of the left and right leaf springs cover the threaded tip pressing position (such as a position where at least a portion of the opposing areas of the left and right leaf springs overlaps with at least a portion of the threaded tip pressing position). Alternatively, the left and right leaf springs are positioned such that at least a portion of the relative area of ​​the left and right leaf springs is farther from the pressing position of the threaded member than the pressing position of the threaded member tip. Therefore, when the entire length of the sliding insertion direction of the mounting base surface is restricted, compared to the case where the entire area of ​​the relative area of ​​the left and right leaf springs is located closer to the pressing position of the threaded member tip than the pressing position of the threaded member tip than the pressing position of the threaded member tip, the distance from the fulcrum of the self-vibrating point (the pressing position of the threaded member tip) to the position supporting the vibration (the position of the left and right leaf springs) can be extended (i.e., the distance from the fulcrum to the point of action). As a result, compared to the case where the vibration is supported only at a position closer to the pressing position of the threaded member tip than the pressing position of the threaded member tip, the force (torque force) experienced by the left and right leaf springs due to the vibration can be reduced. As a result, the vehicle's vibration resistance during operation is improved, making it less prone to flutter.

[0017] In the mounting configuration of the present invention, when the vehicle-mounted device is mounted on the mounting base using the mounting configuration, and the base with leaf springs is viewed from a direction orthogonal to the plate surface of the mounting base, the left and right leaf springs are positioned such that the entire area of ​​the opposite region of the left and right leaf springs exists on the side opposite to the pivot center position of the base, separated from the protrusion abutment position. Therefore, when an external force exceeding a predetermined value is applied to the vehicle-mounted device, and the base with leaf springs rotates and detaches around the protrusion abutment position, since the opposite region of the left and right leaf springs does not cover the fulcrum, the left and right leaf springs move in a manner that separates from the mounting base using this rotation, and a reliable detachment action can be expected. Furthermore, if the opposite region of the left and right leaf springs covers the fulcrum, the left and right leaf springs only rotate relative to the mounting base at the fulcrum position and do not move in a manner that separates from the mounting base, and therefore a reliable detachment action cannot be expected.

[0018] In the mounting configuration of the present invention, when the vehicle-mounted device is mounted on the mounting base using the mounting configuration, and the base with leaf spring is viewed from a direction orthogonal to the plate surface of the mounting base, the pressing position of the threaded member tip is located in the front half (vehicle-top side) of the sliding entry direction in either or both of the areas of the mounting base surface and the areas of the left and right leaf springs. Thus, while the entire length of the sliding entry direction on the mounting base surface is limited, the distance from the protrusion abutment position to the pressing position of the threaded member tip can be increased. Therefore, the distance from the fulcrum of vibration (the protrusion abutment position) to the position supporting the vibration (the positions of the left and right leaf springs) (i.e., the distance from the fulcrum to the point of action) can be further increased. As a result, compared to the case where the protrusion abutment position and the pressing position of the threaded member tip are closer together, the force (torque force) received by the left and right leaf springs due to the vibration of the vehicle-mounted device received by the base-side pivot can be reduced. Consequently, the vibration resistance during vehicle operation can be improved, and flutter is less likely to occur.

[0019] In the mounting configuration of the present invention, the protrusion may be configured such that, when the vehicle-mounted device is mounted on the mounting base using the mounting configuration, the protrusion has a ridge shape extending horizontally along the vehicle width direction, and the top of the ridge shape abuts against the surface of the mounting base. Therefore, when an external force exceeding a predetermined value is applied to the vehicle-mounted device, and the spring-loaded base rotates around the protrusion abutment position as a fulcrum, since the top of the ridge shape constituting the protrusion abutment position extends horizontally along the vehicle width direction, the spring-loaded base can rotate about a horizontal axis extending along the vehicle width direction. As a result, the vehicle-mounted device also rotates in the same direction, enabling a stable avoidance maneuver.

[0020] In the mounting configuration of the present invention, the protrusion abutment position at the top of the protruding strip shape is positioned at the lower end of the mounting base surface. When the base with leaf spring is viewed from a direction orthogonal to the plate surface of the mounting base, the threaded tip pressing position is positioned in the front half (vehicle-top side) of the sliding entry direction in either or both of the areas of the mounting base surface and the areas of the left and right leaf springs. Thus, while the entire length of the sliding entry direction of the mounting base surface is limited, the distance from the protrusion abutment position to the threaded tip pressing position can be increased. Therefore, the distance from the fulcrum of vibration (the protrusion abutment position) to the position supporting the vibration (the positions of the left and right leaf springs) can be further increased (i.e., the distance from the fulcrum to the point of action). As a result, compared to the case where the protrusion abutment position and the threaded tip pressing position are closer together, the force (torque force) received by the left and right leaf springs due to the vibration of the vehicle-mounted device received by the base-side pivot can be reduced. As a result, the vehicle's vibration resistance during operation is improved, and it is less prone to flutter.

[0021] In the mounting configuration of the present invention, the protruding strip shape can be formed by a portion of the leaf spring, and the leaf spring is mounted to the base such that the protruding strip shape flexes by abutting against the surface of the mounting base. Therefore, the protruding strip shape can be easily formed by metalworking the leaf spring. Furthermore, since the protruding strip shape flexes by abutting against the surface of the mounting base, it is expected that a portion of the vibration can be absorbed using the protruding strip shape.

[0022] The leaf spring of the present invention is a leaf spring used in the release structure of the present invention, wherein at least a portion (partial or complete) of an opening (threaded hole, unthreaded hole, notch, etc.) for insertion of the tip of the threaded member is provided in the opposite region of the left and right leaves of the leaf spring. Based on this leaf spring, it can be used in the release structure of the present invention.

[0023] It can be configured such that, in the leaf spring of the present invention, the protruding shape is positioned so as not to cover the opposing areas of the left and right leaf plates. Therefore, when an external force exceeding a predetermined value is applied to the vehicle-mounted device, and the base with the leaf spring rotates and detaches around the top of the protruding shape as a fulcrum, a reliable detachment action can be expected since the opposing areas of the left and right leaf plates do not cover the fulcrum.

[0024] It can be configured such that, in the leaf spring of the present invention, the protrusion shape is formed to be continuous across the entire width of the leaf spring at the location where the protrusion shape is formed. Thus, since the protrusion shape flexes through contact with the surface of the mounting base, it is expected that a portion of the vibration will be absorbed by the protrusion shape.

[0025] The leaf spring of the present invention is used to detachably mount a vehicle-mounted device to a mounting base fixed on the inner side of the windshield of a vehicle. The leaf spring has a protrusion and two opposing leaf plates, each leaf plate having a structure in which the mounting base is housed within a space between them, thereby fitting the mounting base to the leaf plates. The protrusion is configured to have a rib shape extending in a direction parallel to the opposing direction of the leaf plates. The top of this rib shape abuts against the inner side of the mounting base, i.e., the surface of the mounting base, which is fitted with the leaf plates, thus supporting the leaf spring on the mounting base surface. The pressure generated by this abutment causes the rib shape to flex. Therefore, the mounting structure is not limited to the present invention; it can be applied to various mounting structures, and the rib shape can be used to absorb a portion of the vibration of the vehicle-mounted device. Attached Figure Description

[0026] Figure 1A This diagram illustrates an embodiment where the mounting structure with the detachment mechanism of the present invention is applied to a vehicle interior rearview mirror, and shows the completed installation of the leaf spring base relative to the mounting base. Figure 2 A side view of the base and support with leaf springs in the current state, showing the leaf springs and mounting base in perspective, along with the positional relationship of each part and the orientation of the vehicle.

[0027] Figure 1B yes Figure 1A The A-direction view of the mounting base and the base with leaf spring, that is, the view taken from a direction orthogonal to the plate surface of the mounting base, shows the positional relationship of each part.

[0028] Figure 2 This is a perspective view of an embodiment of the present invention, showing the application of the mounting structure with a detachment mechanism of the present invention to a vehicle interior rearview mirror. It shows the rearview mirror in a state where the installation of the interior rearview mirror relative to the mounting base (not shown) that is bonded to the inner side of the windshield of the vehicle is completed, and the orientation of the vehicle is also indicated.

[0029] Figure 3A yes Figure 2 A perspective view of the support portion (an assembly of the base with leaf springs and the support component), showing the orientation shared by the base with leaf springs and the mounting base.

[0030] Figure 3B yes Figure 3A A top view of the base with leaf springs in the support section (viewed vertically from the top surface of the base).

[0031] Figure 4A yes Figure 3A A top view of the leaf spring.

[0032] Figure 4B yes Figure 4A BB-direction sectional view of the leaf spring.

[0033] Figure 4C yes Figure 4A A C-direction view of the leaf spring.

[0034] Figure 4D yes Figure 4A A C-direction view of the leaf spring, showing the state in which the mounting base is engaged with the leaf spring.

[0035] Figure 5A , Figures 5B to 8A ~ Figure 8D This indicates the method used to obtain the interior rearview mirror for mounting to the mounting base. Figure 2 The diagram illustrates the installation steps for the spring-loaded base and mounting base. Figure 5A This is a three-dimensional view showing the state of the mounting base just before it slides into the spring-loaded base.

[0036] Figure 5B It is a section cut at the center of the base with leaf spring in the width direction along the sliding insertion direction of the mounting base, with a plane orthogonal to the plate surface of the mounting base. Figure 5A A longitudinal sectional view of the base and mounting base with leaf springs in the state shown (as illustrated, the windshield with the mounting base installed is laid flat and level). Figure 6B , Figure 7B , Figure 8B (The same applies).

[0037] Figure 6A It means to continue Figure 5A The image shows the state of the mounting base sliding into the spring-loaded base in a three-dimensional view.

[0038] Figure 6B In the context of Figure 5B Cut at the same cutting position Figure 6A A longitudinal sectional view of the base and mounting base with leaf springs in their current state.

[0039] Figure 7A It means to continue Figure 6A The image shows a perspective view of the mounting base reaching the predetermined installation position of the spring-loaded base (in this case, the position where the front face of the mounting base touches the abutting surface of the spring-loaded base and is locked in place) and sliding into a stopped state.

[0040] Figure 7B In the context of Figure 5B , Figure 6B Cut at the same cutting position Figure 7A A longitudinal sectional view of the base and mounting base with leaf springs in their current state.

[0041] Figure 8A It means to continue Figure 7A The image shows a three-dimensional view of the state in which the threaded part is tightened onto the spring-loaded base, and the spring-loaded base is installed relative to the mounting base.

[0042] Figure 8B In the context of Figure 5B , Figure 6B , Figure 7B Cut at the same cutting position Figure 8A A longitudinal sectional view of the base and mounting base with leaf springs in their current state.

[0043] Figure 8C yes Figure 8A A top view of the base with leaf spring and the mounting base in the state of being in the mounting base (viewed vertically from the surface of the mounting base).

[0044] Figure 8D yes Figure 8C DD-direction sectional view. Detailed Implementation

[0045] Embodiments of the present invention will be described. Furthermore, in the following description, the orientations (front, rear, up, down, left, and right) shared by the spring-loaded base and the mounting base are defined as follows. Figure 3A The symbol indicates the direction corresponding to the given direction. Furthermore, this direction description corresponds to the vehicle's direction (see [reference]). Figure 1A , Figure 2 (Inconsistent)

[0046] "Front": The front side (above the vehicle) of the mounting base in the direction of sliding entry relative to the base with leaf spring.

[0047] "Rear": The rear side (under the vehicle) of the mounting base in the sliding entry direction relative to the base with leaf spring.

[0048] "Up": The direction from the top surface of the base with leaf springs toward space (in other words, the direction from the surface of the mounting base (mounting base surface) in the thickness direction of the mounting base that fits into the base with leaf springs toward the back surface (back surface of the mounting base, adhesive surface)).

[0049] "Down": The direction from the top surface of the base with the leaf spring toward the interior of the base with the leaf spring (in other words, the direction from the back of the mounting base of the mounting base that fits into the base with the leaf spring toward the surface of the mounting base).

[0050] "Left": The left side when viewing the mounting base relative to the spring-loaded base from rear to front with the top surface facing upwards. This corresponds to "Right side of the vehicle" in relation to the vehicle's orientation.

[0051] "Right": The right side when viewing the mounting base relative to the spring-loaded base from rear to front with the top surface facing upwards. Consistent with "vehicle left" related to vehicle orientation.

[0052] Figure 2 This illustrates an embodiment of the rearview mirror for vehicles with an installation structure according to the present invention. Figure 2 The image shows the interior rearview mirror 10 mounted on a mounting base 12 bonded to the inner side of the vehicle's windshield. However, the windshield is not shown. The mounting base 12 is a so-called wedge-shaped mounting button. That is, the mounting base 12 is constructed of a steel block (flat plate) with a thickness of approximately 5 mm. When viewed from a direction orthogonal to the surface of the mounting base 12, the shape of the mounting base 12 is a pointed shape, roughly resembling the home plate of a baseball. Figure 8C When viewed from a direction orthogonal to the surface of the mounting base 12, the left and right sides 12c and 12d of the mounting base 12 are not parallel to each other (i.e., the width between the left and right sides 12c and 12d becomes narrower the further forward you go). Figure 8C The mounting base 12 has a mounting base surface 12a, which is generally flat, and a mounting base back surface 12b. Figure 8B , Figure 8D Sometimes, unevenness is formed in the front area of ​​the mounting base surface 12a. Figure 8D The mounting base 12b is adhered to the windshield 14. Figure 8B , Figure 8D The mounting base 12 has its inner side facing the vehicle's interior surface 14a, and the mounting base surface 12a faces the vehicle's interior surface. The mounting base 12 is bonded to the upper part of the upper width of the inner side surface 14a of the windshield 14 with its pointed side (front side) facing the upper side of the vehicle's interior surface. The left and right sides 12c and 12d of the mounting base 12 are configured as inclined surfaces that slope in the thickness direction of the mounting base 12, approaching each other from the mounting base surface 12a side to the mounting base back surface 12b side. Figure 8D Therefore, the left and right edges 12e and 12f formed by the mounting base surface 12a and the left and right sides 12c and 12d constitute acute angles. Figure 8D Therefore, as described later, the left and right leaf springs 16b and 16c can elastically engage with the left and right sides 12c and 12d of the mounting base 12. Figure 8D ).

[0053] exist Figure 2The interior rearview mirror 10 includes a mirror body 18 (vehicle-mounted device) and a support 20. The mirror body 18 is composed of a conventional mirror using a reflector or an electronic mirror equipped with an image display device such as a liquid crystal display (including cases where both an image display device and a reflector are provided). The mirror body 18 is detachably mounted to the mounting base 12 by means of the support 20.

[0054] Reference Figure 1A , Figure 3A , Figure 3B The support part 20 is described below. Figure 1A In this configuration, the support portion 20 is constructed by connecting the spring-loaded base 21 and the support member 22 to each other via a base-side pivot 26. The spring-loaded base 21 is connected to the base 24 by two screws 30 ( Figure 3A It is constructed by mounting a leaf spring 16. The support member 22 and the base 24 are each integrally molded from a reinforced resin such as PA+GF resin (glass fiber reinforced polyamide resin). The support member 22 and the base 24 can also be integrally molded from embedded parts with metal components embedded in them to further increase strength. Alternatively, the support member 22 and the base 24 can be entirely made of metal.

[0055] exist Figure 3A , Figure 3B In this design, a leaf spring 16 is mounted on the top surface 24a of the base 24, and a support member 22 is connected to the lower surface 24c of the base 24. A recess 24b for receiving the leaf spring 16 is formed on the top surface 24a of the base 24. The rear end face 24es of the rib 24e at the front of the recess 24b constitutes a stop for the front end face 12g of the mounting base 12 to abut against, thereby locking the mounting base 12 into place. A slight gap g is formed between the front end face 24hg of the rib 24h at the rear of the recess 24b and the rear end face 16q of the leaf spring 16. This gap g is designed to allow the rear end face 16q of the leaf spring 16 to move when the protrusion 16d of the leaf spring 16 flexes due to abutment against the surface 12a of the mounting base. The leaf spring 16 is fixed to the base 24 only at the fixing part 16a by screws 30, thus allowing for flexure of the protrusion 16d and movement of the rear end face 16q accompanying the flexure. Figure 1A In the base 24, a base-side pivot 26B (a concave spherical surface of a ball joint) is formed on the lower surface 24c of the base 24 for fitting into the upper end of the support member 22, which is a base-side pivot 26A (a convex spherical surface of a ball joint). A threaded through hole 24f is formed on the front side (the vehicle-top side) of the base-side pivot 26B on the lower surface 24c of the base 24. Figure 8B , Figure 8D The threaded through hole 24f connects with the threaded hole 16f of the leaf spring 16. Figure 8B , Figure 8D ).

[0056] exist Figure 1A In this structure, the support member 22 has a base-side pivot 26A (a convex spherical surface of a ball joint) at one end and a vehicle-mounted device-side pivot 28A (a convex spherical surface of a ball joint) at the other end. The base-side pivot 26A engages with a base-side pivot 26B (a concave spherical surface of a ball joint) formed on the lower surface of the base 24. Thus, the support member 22 can be tilted to the base 24 in all directions using the base-side pivots 26A and 26B. Furthermore, the base-side pivot 26 is formed by the engagement of the base-side pivots 26A and 26B. The vehicle-mounted device-side pivot 28A engages with a vehicle-mounted device-side pivot 28B (a concave spherical surface of a ball joint) formed on the central portion of the back surface of the mirror body 18. Figure 2 ) Fitting. Thus, the mirror body 18 can be tilted in all directions and connected to the support member 22 via the vehicle-mounted device side pivots 28A and 28B. Figure 2 Furthermore, the vehicle-mounted device side pivot 28 is formed by the interlocking of the vehicle-mounted device side pivots 28A and 28B. The height of the mirror body 18 can be adjusted by tilting the support member 22 in the forward / backward direction of the vehicle (rotating about a horizontal axis) with the base-side pivot 26 as the center. Additionally, the angle of the mirror body 18 can be adjusted by tilting the mirror body 18 in the up, down, left, and right directions with the vehicle-mounted device side pivot 28 as the center (the angle of the mirror body 18 can also be adjusted by rotation about a non-horizontal axis based on the base-side pivot 26). Using these height and angle adjustments, the mirror body 18 can be adjusted to a posture (height and angle) easily visible to the driver.

[0057] Figures 4A to 4D This describes the structure of leaf spring 16. Leaf spring 16 is manufactured by metalworking a single sheet of steel leaf spring material. Leaf spring 16 has a fixing part 16a, a left side 16b, a right side 16c, and a protrusion 16d. The fixing part 16a is the portion of leaf spring 16 located in the center of the leaf surface and is threaded to the base 24. Figure 4A As shown, in the fixing part 16a, two screw through holes 16e (unthreaded holes) are formed in symmetrical positions on the left and right sides. Additionally, in the fixing part 16a, a threaded hole 16f (threaded hole) and a positioning hole 16g are formed side-by-side along the front and back sides at the left and right center positions. The fixing part 16a accommodates the recess 24b of the top surface 24a of the base 24. Figure 3A At this point, the positioning protrusion 24g of the base 24 is inserted into the positioning hole 16g of the leaf spring 16, and the leaf spring 16 is positioned relative to the top surface 24a of the base 24. In this state, two screws 30 are passed through the screw through hole 16e and screwed into the threaded hole (not shown) of the base 24, thereby fixing the leaf spring 16 to the base 24. With the leaf spring 16 installed on the base 24, for example, as... Figure 8B , Figure 8DAs shown, the threaded through hole 24f formed on the lower surface 24c of the base 24 communicates with the threaded hole 16f of the leaf spring 16. A steel threaded member 36 (for creating an engagement force between the mounting base 12 and the left and right leaf spring plates 16b and 16c) is used. Figure 8B , Figure 8D The threaded part 36 is inserted into the threaded through hole 24f from the lower surface 24c side of the base 24 and screwed into the threaded hole 16f of the leaf spring 16. The tip 36a (threaded part tip) of the threaded part 36 is formed into a sharp shape. When the threaded part 36 is screwed into the threaded hole 16f, the tip 36a of the threaded part presses against the front part of the mounting base surface 12a of the mounting base 12 that is fitted into the leaf spring 16. When the threaded part 36 is further tightened against the spring force of the leaf spring 16, the pressing force increases, thereby strengthening the engagement force of the leaf spring 16 relative to the mounting base 12. This engagement force can be adjusted by the amount of tightening of the threaded part 36.

[0058] exist Figures 4A to 4D In this configuration, the left and right leaf spring plates 16b and 16c are respectively connected to the left and right sides of the fixing part 16a and folded back obliquely upward and inward. That is, the left and right leaf spring plates 16b and 16c are configured to cooperate with the left and right sides 12c and 12d of the mounting base 12, forming an inclined surface inclined in the thickness direction of the mounting base 12. Furthermore, as... Figure 4A As shown, the left and right leaf spring plates 16b and 16c are configured to be non-parallel (the width between the left and right sides 12c and 12d becomes narrower towards the front) when viewed from a direction orthogonal to the plate surface of the mounting base 12. The mounting base 12 slides into and is housed in the space 38 sandwiched by the left and right leaf spring plates 16b and 16c. The inner wall surfaces of the left and right leaf spring plates 16b and 16c, which are inclined in the vertical direction, engage with the left and right sides 12c and 12d of the mounting base 12, which are inclined in the same direction (thickness direction). Slits 17 are formed at the midpoint of the extension direction of the left and right leaf spring plates 16b and 16c. Thus, the left and right leaf spring plates 16b and 16c are each configured as a two-part structure. By configuring them as a two-part structure, when the threaded part 36 is tightened ( Figure 1A When the spring is in contact with the mounting base 12, the left and right leaf spring plates 16b and 16c are evenly fitted with the left and right sides 12c and 12d of the mounting base 12 along their long sides (without unilateral contact). Figure 4A In this embodiment, the area where the left and right leaf springs 16b and 16c face each other (the area sandwiched between the line L1 connecting the upper edges of the left and right leaf springs 16b and 16c and the line L2 connecting their lower edges, indicated by the shaded line) is designated as the relative area Z1 of the left and right leaf springs. In this embodiment, the threaded hole 16f is positioned such that it enters the relative area Z1 of the left and right leaf springs as a whole.

[0059] The protrusion 16d is formed as a spur extending horizontally along the width of the vehicle when the mounting structure is mounted on the vehicle. This spur shape is continuous across the entire width of the leaf spring 16 at the location where it is formed. The cross-sectional shape of this spur (the cross-sectional shape obtained by cutting with a plane orthogonal to the extension direction of the spur) is a mountain-shaped form at any location in the extension direction. The top 16p of the spur shape abuts against the mounting base surface 12a of the mounting base 12, becoming the center (fulcrum) for vibration and rotational detachment.

[0060] Reference Figure 5A , Figures 5B to 8A ~ Figure 8D The description refers to the interior rearview mirror 10 with the above structure. Figure 2 The windshield 14 of the vehicle is installed manually using the mounting base 12. Figure 1A Step 14a of the inner side of the vehicle.

[0061] [1] The mounting base 12 is bonded and fixed to the upper part of the center of the inner side surface 14a of the windshield 14 of the vehicle in the width direction.

[0062] [2] An interior rearview mirror 10 is prepared, with the support 20 connected to the mirror body 18. A leaf spring 16 is installed on the top surface 24a of the base 24 of the support 20.

[0063] [3] Figure 5A , Figure 5B This indicates the state before the mounting base 12 slides into the leaf spring 16 of the base 21 with the leaf spring. The threaded part 36 is screwed into the threaded hole 16f of the leaf spring 16, but is recessed in the lower position (the position where the sliding mounting base 12 does not touch the threaded part 36) so as not to hinder the sliding of the mounting base 12.

[0064] [4] From this state onwards, such as Figure 6A , Figure 6B As shown, the mounting base 12 slides into the space 38 (relative to the space 38, from bottom to top in the vertical direction of the vehicle) between the left and right leaf springs 16b and 16c. Since the mounting base 12 is fixed to the windshield 14 of the vehicle, this sliding entry is actually achieved by moving the interior rearview mirror 10 in the opposite direction to the sliding entry direction of the mounting base 12 relative to the stationary mounting base 12. That is, the interior rearview mirror 10 moves along the windshield 14 from the upper side to the lower side inside the vehicle.

[0065] [5] When the mounting base 12 is slid into the space 38, as Figure 7A , Figure 7BAs shown, the sliding entry is stopped when the front end face 12g of the mounting base 12 abuts against the stop 24es of the base 24. At this time, the left and right sides 12c and 12d of the mounting base 12, which are inclined in the thickness direction, and the inner wall surfaces of the left and right leaf spring plates 16b and 16c, which are inclined in the same direction, loosely engage to a degree that causes wobbling. As a result, the interior rearview mirror 10 is supported on the mounting base 12 to a degree that prevents it from falling. The sliding entry operation ends here, and the mounting base 12 is positioned in the predetermined proper mounting position on the base 21 with leaf springs.

[0066] [6] Tighten the threaded part 36 using a tool. Figure 8B As a result, the tip 36a of the threaded part abuts against the mounting base surface 12a of the mounting base 12. When the threaded part 36 is further tightened against the spring force of the leaf spring 16, the tip 36a of the threaded part gradually pushes the mounting base 12 upwards (in fact, the spring-loaded base 21 gradually descends relative to the stationary mounting base 12). Consequently, the engagement force of the left and right leaf spring plates 16b and 16c relative to the left and right sides 12c and 12d gradually increases. Once the engagement force reaches a predetermined value, the tightening of the threaded part 36 is completed. Thus, the left and right leaf spring plates 16b and 16c elastically engage with the left and right sides 12c and 12d of the mounting base 12, resulting in the spring-loaded base 21 being fixed to the mounting base 12 without wobbling. The magnitude of the elastic engagement force can be adjusted according to the weight of the interior rearview mirror 10. That is, when the interior rearview mirror 10 is heavier, the tightening amount of the threaded part 36 is increased compared to when it is lighter. This increases the engagement force, thereby increasing the mounting strength of the rearview mirror 10 relative to the mounting base 12. Therefore, even if the rearview mirror 10 is a heavy electronic mirror or a large rearview mirror, it can be firmly supported on the mounting base 12, thus preventing the rearview mirror 10 from wobbling during vehicle use after installation. With the spring-loaded base 21 securely fixed to the mounting base 12 as described above, the installation is complete. Figures 8A to 8D This indicates the final state of the installation. Afterwards, a cover (not shown) for aesthetic design is installed on the spring-loaded base 21.

[0067] use Figure 1A , Figure 1B This indicates that the installation of the spring-loaded base 21 relative to the mounting base 12 is complete. Figures 8A to 8D The positional relationship of each part in a certain state. Figure 1A , Figure 1B In the text, P1~P3 and Z1~Z3 refer to the following meanings respectively.

[0068] "Base side pivot center position P1": Center position of base side pivot 26

[0069] “Threaded part tip pressing position P2”: The position on the surface 12a of the mounting base where the threaded part tip 36a presses down.

[0070] "Protrusion abutment position P3": The position where the top 16p of the protrusion 16d of the leaf spring 16 in the mounting base surface 12a abuts.

[0071] "Z1, the area where the left and right leaf springs face each other": When viewed from a direction orthogonal to the plate surface of the mounting base 12, the area where the base 21 with leaf springs faces each other (the area where the left and right leaf springs 16b and 16c face each other). Figure 1B The area indicated by the descending shaded line to the right)

[0072] "Z2 area opposite the mounting base": the area of ​​space that is perpendicular to the surface of the mounting base 12. Figure 1A , Figure 1B The area indicated by the descending shading line to the left, however, in Figure 1A In order to avoid the lines from intersecting, the shading line is omitted in the middle of the area.

[0073] "Z3, the front half of the mounting base surface": the area of ​​the front half (above the vehicle) of the mounting base surface 12a in the sliding entry direction. Figure 1B (The area represented by gray in the middle)

[0074] exist Figure 1A , Figure 1B In the mounting base, the pivot center position P1 is positioned offset towards the vehicle's lower side relative to the area Z2 opposite to the mounting base. The threaded tip pressing position P2 is positioned in front of the sliding entry direction of the mounting base 12 relative to the protrusion abutment position P3 (a position closer to the vehicle's upper side than the protrusion abutment position P3). When viewing the spring-loaded base 21 from a direction orthogonal to the plate surface of the mounting base 12, the left and right leaf spring plates 16b and 16c are positioned such that at least a portion of the relative area Z1 of the left and right leaf spring plates covers the threaded tip pressing position P2 (a position where at least a portion of the relative area Z1 of the left and right leaf spring plates overlaps with at least a portion of the relative area P2 of the threaded tip pressing position), or such that at least a portion of the relative area Z1 of the left and right leaf spring plates exists further away from the threaded tip pressing position P2 relative to the protrusion abutment position P3 (a position closer to the vehicle's upper side than the threaded tip pressing position P2). That is, for Figure 1BTo explain, the threaded part tip pressing position P2 is located at the center of the relative area Z1 of the left and right leaf springs, and the entire threaded part tip pressing position P2 is located within the relative area Z1 of the left and right leaf springs. As a result, the center of the relative area Z1 of the left and right leaf springs in the front-rear direction (vehicle vertical direction) is positioned to cover the threaded part tip pressing position P2. In addition, the area of ​​the relative area Z1 of the left and right leaf springs that is forward of the threaded part tip pressing position P2 (vehicle upper side) is positioned further away from the protrusion abutment position P3 than the threaded part tip pressing position P2 (better positioned than the threaded part tip pressing position P2 on the vehicle upper side). With this configuration, when the mirror body 18 is mounted on the mounting base 12 using this mounting structure, at least a portion of the vibration (vibrating force or force to vibrate) of the mirror body 18 received by the base-side pivot 26 is supported by the left and right leaf springs 16b and 16c at a position opposite to the center position P1 of the base-side pivot, with the protrusion abutment position P3 as the fulcrum (a position on the front side of the sliding entry direction of the mounting base 12 relative to the protrusion abutment position P3 (a position on the side above the vehicle than the protrusion abutment position P3)). That is, the center position P1 of the base-side pivot becomes the point of force receiving vibration, the protrusion abutment position P3 becomes the fulcrum, and the positions of the left and right leaf springs 16b and 16c become the points of application supporting the vibration. At this time, since the left and right leaf springs 16b and 16c are positioned such that at least a portion of the relative area Z1 of the left and right leaf springs covers the threaded top pressing position P2, or such that at least a portion of the relative area Z1 of the left and right leaf springs exists further than the threaded top pressing position P2 relative to the protrusion abutment position P3 (a position closer to the vehicle top side than the threaded top pressing position P2), the distance from the fulcrum of self-vibration (protrusion abutment position P3) to the position supporting the vibration (position of the left and right leaf springs 16b and 16c) can be extended (i.e., the distance from the fulcrum to the point of action). As a result, compared to the case where the vibration is supported only at the position near the protrusion abutment position P3 of the threaded part pressing position P2 (i.e., the position of the entire relative area Z1 of the left and right leaf springs relative to the protrusion abutment position P3 is positioned closer to the protrusion abutment position P3 than the position of the threaded part pressing position P2 relative to the protrusion abutment position P3, i.e., the distance from the fulcrum to the point of action is shorter), the force (torque force) received by the left and right leaf springs 16b and 16c due to this vibration can be reduced. Consequently, the vibration resistance during vehicle operation can be improved, and chatter is less likely to occur.

[0075] exist Figure 1A , Figure 1BWhen viewing the spring-loaded base 21 from a direction orthogonal to the plate surface of the mounting base 12, the left and right leaf spring plates 16b and 16c are positioned such that the entire relative area Z1 of the left and right leaf spring plates exists on the side opposite to the pivot center position P1 of the base side, separated by the protrusion abutment position P3. That is, the protrusion abutment position P3 is positioned further rearward (on the vehicle underside) than the relative area Z1 of the left and right leaf spring plates in the sliding direction. With this configuration, when an external force exceeding a predetermined value is applied to the mirror body 18, and the spring-loaded base 21 rotates and detaches around the protrusion abutment position P3, a reliable detachment action can be expected. In other words, since the relative area Z1 of the left and right leaf spring plates does not cover the pivot point P3 (the relative area Z1 of the left and right leaf spring plates is away from the pivot point P3, which is the center of rotation), the left and right leaf spring plates 16b and 16c move away from the mounting base 12 by this rotation. In other words, assuming that the relative area Z1 of the left and right leaf springs covers the fulcrum P3, the left and right leaf springs 16b and 16c will only rotate relative to the mounting base 12 at the fulcrum P3, and will not move away from the mounting base 12. Therefore, a reliable detachment action cannot be expected.

[0076] exist Figure 1A , Figure 1B In the mirror body 18, the protrusion 16d has a rib shape extending horizontally along the vehicle width direction, and the top 16p of the rib shape abuts against the mounting base surface 12a. With this configuration, when an external force exceeding a predetermined value is applied to the mirror body 18, and the spring-loaded base 21 rotates around the protrusion abutment position P3 as a fulcrum, the top 16p of the rib shape constituting the protrusion abutment position P3 extends horizontally along the vehicle width direction. Therefore, the spring-loaded base 21 can rotate about a horizontal axis H extending along the vehicle width direction. As a result, the mirror body 18 also rotates in the same direction, enabling a stable avoidance maneuver.

[0077] exist Figure 1A , Figure 1B In this configuration, the protrusion P3 at the top 16p of the protruding strip is positioned at the lower end 12ab of the mounting base surface 12a, and the threaded tip pressing position P2 is positioned in the front half region Z3 of the mounting base surface. Furthermore, the threaded tip pressing position P2 is located in the front half region of the mounting base 12 in the sliding entry direction of the left and right leaf spring relative regions Z1. Figure 1B(The upper half of the area of ​​the rightward descending shaded area). With this configuration, under the condition that the entire length of the sliding entry direction of the mounting base surface 12a is restricted, the distance from the protrusion abutment position P3 to the threaded top pressing position P2 can be extended. Therefore, the distance from the fulcrum of self-vibration (protrusion abutment position P3) to the position supporting the vibration (the position of the left and right leaf spring plates 16b and 16c. That is, the position where the left and right leaf spring plates 16b and 16c are arranged such that at least a portion of the relative area Z1 of the left and right leaf spring plates covers the threaded top pressing position P2) (i.e., the distance from the fulcrum to the point of action). As a result, compared with the case where the protrusion abutment position P3 and the threaded top pressing position P2 are closer, the force (torque force) received by the left and right leaf spring plates 16b and 16c due to the vibration of the mirror body 18 borne by the base side pivot 26 can be reduced. As a result, the vibration resistance during vehicle operation can be improved, and flutter is less likely to occur.

[0078] exist Figure 1A , Figure 1B In this configuration, the protruding portion 16d in the shape of a ridge is formed as part of the leaf spring 16, which is mounted on the base 24 in such a way that the ridge shape flexes due to its contact with the mounting base surface 12a. With this configuration, the ridge shape can be easily formed by metalworking the leaf spring. Furthermore, since the ridge shape flexes due to its contact with the mounting base surface 12a, it is expected that a portion of the vibration will be absorbed by the ridge shape.

[0079] Furthermore, for the interior rearview mirror 10 mounted on the mounting base 12 Figures 8A to 8D When removing the interior rearview mirror 10 from the mounting base 12 for purposes such as repair or replacement, the operation can be performed in the reverse order of the installation steps described above.

[0080] For the rearview mirror 10 mounted on the mounting base 12 Figure 1A , Figure 1B , Figure 2 , Figures 8A to 8D From the state of impact, the rearview mirror 10 avoids impact on the mirror body 18 by performing the following actions. When an occupant collides with the mirror body 18 and applies external force to it, the rearview mirror 10 avoids impact on the mirror body 18 by performing the following actions. Figure 1A First, the support member 22 extends towards the front of the vehicle with the base side pivot 26 as the center. Figure 1AThe external force is released by rotating the rearview mirror 10 (counterclockwise) (first stage of avoidance action). When the upper part of the support 22 (rotation-locked part) abuts against the rotation-locked part 24cs of the lower surface 24c of the spring-loaded base 21 while the external force is continuously applied, the rotation of the support 22 is mechanically locked. When a predetermined force or more is applied to the mirror body 18 from this state, the engagement between the mounting base 12 and the spring 16 is released (at this time, the spring 16 is elastically broken), and the interior rearview mirror 10, along with the support 20, detaches from the mounting base 12 (second stage of avoidance action). This ensures the safety of the occupants. The second stage of avoidance action is performed with the protruding top 16p as a fulcrum; therefore, the interior rearview mirror 10 rotates and detaches around the horizontal axis H extending along the vehicle width direction. This allows for a stable avoidance action in the avoidance direction. If the components other than the leaf spring 16 which has been damaged by elasticity are not damaged, the interior rearview mirror 10 can be reused by replacing the leaf spring 16 with a new leaf spring.

[0081] In the described embodiment, the leaf spring 16 forms a protrusion 16d, but the location of the protrusion is not limited to this. For example, the protrusion can also be integrally formed with or separate from the top surface 24a of the base 24. In the described embodiment, the leaf spring 16 is mounted relative to the base 24 using a screw 30. Figure 3A , Figure 3B The leaf spring can be fastened to the base using screws (e.g., screws), but the method of mounting the leaf spring to the base is not limited to this. For example, the leaf spring can be placed in the mold of the resin molded base and mounted on the base by insert molding. Alternatively, as another method, the leaf spring can be mounted to the base by providing rivet through holes in both the leaf spring and the base, inserting a rivet from the rivet through hole of the leaf spring placed on top of the base into the rivet through hole of the base, and riveting the tip of the rivet to the back side of the base. In the above embodiment, a threaded hole 16f (a threaded hole) for screwing into the threaded part 36 is formed in the leaf spring 16, but the location of the threaded hole is not limited to this. For example, it can also be configured such that the threaded hole 24f (a non-threaded hole) of the base 24 is used to form the threaded hole. Figure 8B , Figure 8D The threaded part 36 is screwed into the threaded hole instead of the threaded hole 16f. In this case, the opening formed in the leaf spring 16 can replace the threaded hole 16f (the threaded hole) and be formed as a non-threaded hole, a notch (an opening with a partially unclosed periphery), etc. In the above embodiment, the tip 36a of the threaded part is formed as a sharp shape, but it is also possible to form the tip 36a of the threaded part as a non-sharp shape (flat surface, curved convex surface, etc.). In the above embodiment, the entire area Z1 of the opposite region of the left and right leaf springs is covered (entered, overlapped) by the pressing position P2 of the tip of the threaded part. Figure 1BHowever, it is also possible to configure the threaded tip pressing position P2 to cover only a portion of the leaf spring's left and right leaf areas Z1. Alternatively, the entire leaf spring's left and right leaf areas Z1 can be positioned further from the protrusion abutment position P3 than the threaded tip pressing position P2 (the threaded tip pressing position P2 does not cover the leaf spring's left and right leaf areas Z1). In this embodiment, the threaded tip pressing position P2 is located in the front half of the sliding entry direction of the mounting base 12, in either the mounting base surface 12a or the leaf spring's left and right leaf areas Z1, but it is not limited to this. That is, the threaded tip pressing position P2 can be located in the front half of the sliding entry direction of the mounting base 12, in either the mounting base surface 12a or the leaf spring's left and right leaf areas Z1. In this embodiment, the support member is configured to tilt in all directions by using a ball pivot as the base-side pivot, but the base-side pivot is not limited to this. For example, the base-side pivot can also be constructed from a pivot having only one rotation axis extending along the width direction of the vehicle and in the horizontal direction (for example, the base-side pivot shown as the rotational connection 58 in Figures 11A to 15 of Patent Document 1). This invention is not limited to the mounting structure of in-vehicle devices for large vehicles, but can also be applied to the mounting structure of in-vehicle devices for other vehicles such as passenger cars. This invention is not limited to rearview mirrors, but can also be applied to the mounting structure of other in-vehicle devices (e.g., cameras, liquid crystal displays, dashcams, etc.).

[0082] Explanation of reference numerals in the attached figures

[0083] 10. Interior rearview mirror; 12. Mounting base; 12a. Mounting base surface; 12ab. Lower end of mounting base surface; 12b. Back of mounting base; 12c, 12d. Left and right sides of mounting base; 12e, 12f. Left and right edges of mounting base; 12g. Front end of mounting base; 14. Windshield; 14. Inner side of windshield; 16. Leaf spring; 16a. Fixing part; 16b, 16c. Left and right leaf spring plates; 16d. Convex... Part; 16e, screw through hole; 16f, threaded hole (opening for insertion of the tip of the threaded part); 16g, positioning hole; 16p, top of the protrusion; 16q, rear end face of the leaf spring; 17, slit; 18, mirror body (vehicle-mounted device); 20, support part; 21, base with leaf spring; 22, support member; 22a, upper part of the support member facing the front of the vehicle; 24, base; 24a, top surface; 24b, recess; 24c, lower surface; 24cs, rotation locking Part; 24e, Rib; 24es, Rear end face of rib (stop); 24f, Threaded through hole; 24g, Locating protrusion; 24h, Rib; 24hg, Front end face of rib; 26, Base side pivot; 26A, Base side pivot (convex spherical surface); 26B, Base side pivot (concave spherical surface); 28, Vehicle-mounted device side pivot; 28A, Vehicle-mounted device side pivot (convex spherical surface); 28B, Vehicle-mounted device side pivot (concave spherical surface); 30, Screw; 36, Threaded part; 36a. Threaded top; 38, Space between the left and right leaf springs; g, Clearance; H, Horizontal axis extending along the width of the vehicle; L1, Line connecting the upper edges of the left and right leaf springs; L2, Line connecting the lower edges of the left and right leaf springs; P1, Center position of the pivot on the base side; P2, Pressing position of the threaded top; P3, Protrusion abutment position (fulcrum); Z1, Relative area of ​​the left and right leaf springs; Z2, Area opposite the mounting base; Z3, Front half area of ​​the mounting base surface.

Claims

1. A mounting structure with a detachment mechanism for a vehicle-mounted device, wherein the vehicle-mounted device is detachably mounted to a mounting base fixed on the inner side of the windshield of a vehicle, wherein... This installation configuration has: A base with leaf springs, which has a structure in which leaf springs are installed on the base; A threaded component, which is screwed into the spring-loaded base; and A support member has a base-side pivot at one end that connects to the spring-loaded base, and at the other end that connects to the vehicle-mounted device. The leaf spring has the following structure: the mounting base, which is fixed to the windshield, slides upwards relative to the space between the left and right leaf spring plates arranged opposite to each other in the vertical direction and is housed in the space, thereby allowing the mounting base to engage with the left and right leaf spring plates in a direction orthogonal to the sliding direction. The threaded component is screwed into the base with the leaf spring, and tightened while the mounting base and the leaf spring are engaged. The tip of the threaded component is pressed against the surface of the mounting base fixed to the windshield, facing inwards towards the vehicle, thereby creating an appropriate engagement force between the mounting base and the left and right leaf springs, allowing the mounting base and the left and right leaf springs to elastically engage. The base with leaf spring has a protrusion that abuts against the surface of the mounting base. The center position of the base-side pivot is defined as the center position of the base-side pivot; the area of ​​space facing the plate surface of the mounting base orthogonally is defined as the opposite area of ​​the mounting base; the position on the surface of the mounting base pressed by the top of the threaded component is defined as the pressing position of the top of the threaded component; the position on the surface of the mounting base for the protrusion to abut is defined as the abutting position of the protrusion; and the area of ​​the surfaces of the left and right leaf springs facing each other when viewing the base with leaf springs from a direction orthogonal to the plate surface of the mounting base is defined as the opposite area of ​​the left and right leaf springs. The relative positions of the base side pivot center position, the area opposite the mounting base, the pressing position of the top of the threaded component, the abutment position of the protrusion, and the relative positions of the left and right leaf spring plates are set as follows: When the vehicle-mounted device is mounted on the mounting base using the mounting structure, The center position of the pivot on the base side is positioned offset towards the underside of the vehicle relative to the area opposite the mounting base, and... The pressing position at the top of the threaded component is positioned relative to the abutment position of the protrusion on the front side of the sliding entry direction of the mounting base, and... When viewed from a direction orthogonal to the surface of the mounting base, the left and right leaf springs are positioned such that at least a portion of the opposing area of ​​the left and right leaf springs covers the pressing position of the threaded member tip, or such that at least a portion of the opposing area of ​​the left and right leaf springs is located further away from the pressing position of the threaded member tip than the abutting position of the protrusion. The mounting structure is configured such that the vehicle-mounted device is installed on the mounting base using the elastic fitting, and when an external force of a predetermined value or more is applied to the vehicle-mounted device in the installed state, the elastic fitting is released and the vehicle-mounted device is detached from the mounting base.

2. The mounting structure of the vehicle-mounted device with a detachment mechanism according to claim 1, wherein, When the vehicle-mounted device is mounted on the mounting base using the mounting structure, and the base with leaf spring is viewed from a direction orthogonal to the plate surface of the mounting base, the left and right leaf springs are positioned such that the entire area of ​​the opposite region of the left and right leaf springs exists on the side opposite to the pivot center position of the base, separated by the protrusion abutment position.

3. The mounting structure of the vehicle-mounted device with a detachment mechanism according to claim 1, wherein, When the vehicle-mounted device is mounted on the mounting base using the mounting structure, and the base with leaf spring is viewed from a direction orthogonal to the plate surface of the mounting base, the pressing position of the top of the threaded member is located in the front half of the sliding entry direction of either or both of the areas of the mounting base surface and the areas of the left and right leaf springs.

4. The mounting structure of the vehicle-mounted device with a detachment mechanism according to claim 1, wherein, When the vehicle-mounted device is mounted on the mounting base using the mounting structure, the protrusion has a ridge shape extending horizontally along the width direction of the vehicle, and the top of the ridge shape abuts against the surface of the mounting base.

5. The mounting structure of the vehicle-mounted device with a detachment mechanism according to claim 4, wherein, The protrusion at the top of the protruding strip is positioned at the lower end of the mounting base surface. When the base with leaf spring is viewed from a direction orthogonal to the plate surface of the mounting base, the pressing position of the top of the threaded member is located in the front half of the sliding entry direction of either or both of the areas of the mounting base surface and the areas of the left and right leaf springs.

6. The mounting structure of the vehicle-mounted device with a detachment mechanism according to claim 4, wherein, The protruding strip shape is formed by a portion of the leaf spring, which is mounted to the base in such a way that the protruding strip shape flexes by abutting against the surface of the mounting base.

7. A leaf spring, which is the leaf spring used in the mounting structure of the vehicle-mounted device with a release mechanism according to any one of claims 1 to 6, wherein, The leaf spring has at least a portion of an opening in the opposite region of the left and right leaves for the insertion of the threaded part tip.

8. A leaf spring having the shape of the protruding strip, used in the mounting structure of the vehicle-mounted device with a release mechanism according to any one of claims 4 to 6, wherein, The protrusion is positioned so as not to cover the opposite areas of the left and right leaf springs.

9. A leaf spring having the shape of the protruding strip, used in the mounting structure of the vehicle-mounted device with a release mechanism according to any one of claims 4 to 6, wherein, The protrusion shape is formed to be continuous across the entire width of the leaf spring at the location where the protrusion shape is formed.

10. A leaf spring for detachably mounting a vehicle-mounted device to a mounting base fixed on the inner side of the windshield of a vehicle, wherein... The leaf spring has a protrusion and left and right leaf spring plates arranged opposite to each other. The left and right leaf springs have the following structure: the mounting base is housed within the space between the left and right leaf springs, thereby allowing the mounting base to engage with the left and right leaf springs. The protrusion is configured to have a protruding strip shape extending in a direction parallel to the relative directions of the left and right leaf springs. The top of the protruding strip shape abuts against the surface of the mounting base that is fitted into the left and right leaf springs, facing the inside of the vehicle, i.e., the mounting base surface, thereby supporting the leaf spring on the mounting base surface. The protruding strip shape is flexed by the pressing force generated by the abutment.

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