JP2015093638A - Bracket device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bracket device allowing adjustment of an angle to a pitch direction, a yaw direction and a roll direction, and suppressed in angle fluctuation even upon the action of an external force.SOLUTION: A bracket device BKT is obtained by connecting a first bracket body 1 and a second bracket body 2 with a shaft body 3 penetrating them. One bracket body is configured of a spherical body 12, and the other bracket body is provided with a pair of recessed spherical parts 231 for receiving a pair of spherical parts 14 of the spherical body. A through hole 13 of the bracket body, to penetrate the shaft body into is configured of a conical surface part 15 expanded in a diameter from the center to both end opening parts. A contact pressure between the pair of spherical parts and the pair of recessed spherical parts is set by the shaft bodies 31 and 32.

Description

  The present invention is a bracket suitable for mounting various devices (second attached object) including a drive recorder, an indoor rearview mirror, a camera and other in-vehicle devices to a vehicle or other appropriate place (first attached object). Relates to the device.

  A bracket device used to mount an in-vehicle device such as a drive recorder to a windshield is known in which the in-vehicle device is fixed so as to be rotatable around a rotation shaft (Patent Document 1). Thereby, it is supposed that the said bracket apparatus can be used widely also with respect to the vehicle from which the inclination angle of a windshield differs.

JP 2010-105530 A

  However, in the above-described conventional bracket device, since the vehicle-mounted device can only be rotated in the pitch direction, the angle of the yaw direction or roll direction needs to be adjusted, such as on both sides of the windshield and the interior mirror. It cannot be applied to. Moreover, any angle can be adjusted by using a conventionally known ball joint joint. However, since the ball joint joint is connected by fitting the ball and the tray, the angle varies due to vibration or impact. There is.

  The problem to be solved by the present invention is to provide a bracket device in which the angle can be adjusted with respect to the pitch direction, the yaw direction, and the roll direction, and the angle variation is suppressed even when an external force is applied.

  The present invention is a bracket device in which a first bracket body and a second bracket body are connected by a shaft body that passes through the first bracket body and the second bracket body. A pair of concave spherical portions that receive the pair of spherical portions of the main body, and a through hole of the bracket body through which the shaft body passes is constituted by a conical surface portion whose diameter increases from the center toward both end openings, and the shaft body Thus, the bracket device that sets the pressure contact force between the pair of spherical portions and the pair of concave spherical portions solves the above problem.

  According to the bracket device of the present invention, since the first bracket body and the second bracket body are coupled by the shaft body, the first bracket body and the second bracket body are angled around the axis (pitch direction) of the shaft body. Can be adjusted. Further, since the shaft body passes through the through-holes having conical surface portions at both ends, the first bracket body and the second bracket body are angled around two axes (yaw direction and roll direction) perpendicular to the shaft body axis. Can be adjusted. Since the pressure contact force between the pair of spherical surface portions and the pair of concave spherical surface portions is set by the shaft body, the angle is adjusted by vibration or shock by increasing the pressure contact force after adjusting the angle with the pressure contact force reduced. Fluctuation can be prevented. At this time, since the shaft body is provided through the through hole of the main body portion, the size of the entire bracket device becomes compact.

It is a perspective view which shows one Embodiment of the bracket for drive recorders which applied the bracket apparatus which concerns on this invention. FIG. 2 is an exploded perspective view (No. 1) showing the drive recorder bracket of FIG. 1. FIG. 3 is an exploded perspective view (No. 2) showing the drive recorder bracket of FIG. 1. It is a front view which shows the bracket for drive recorders of FIG. It is a right view which shows the bracket for drive recorders of FIG. It is a left view which shows the bracket for drive recorders of FIG. It is sectional drawing which follows the VII-VII line of FIG. It is a figure for demonstrating the angle adjustment direction of the bracket for drive recorders of FIG.

<Configuration of bracket device>
Hereinafter, as an embodiment of the bracket device BKT according to the present invention, an embodiment in which the bracket device BKT is applied to a bracket for a drive recorder will be described. The bracket device BKT according to the present invention can be applied to various attachments that require angle adjustment with multiple degrees of freedom, in addition to being incorporated in a drive recorder.

  A general drive recorder 4 is mounted on the indoor side of a windshield 5 of an automobile, the body of an indoor mirror, and the like, and captures an image of a forward view during traveling. Moreover, it may be mounted on the rear window glass, side window glass, or instrument panel upper surface of an automobile as required. In any case, it is necessary to adjust the lens optical axis L of the camera of the drive recorder 4 in the shooting direction at the time of mounting.

  In the following description, the angle adjustment direction of the lens optical axis L is defined as shown in FIG. 8 in order to describe the embodiment of the bracket device BKT of the present invention by taking a drive recorder 4 mounted on an automobile as an example. And That is, as shown in FIG. 8, among the X axis, Y axis, and Z axis orthogonal to each other, the shooting direction (that is, the lens optical axis L of the drive recorder 4) is the Y axis direction, the vertical direction is the Z axis direction, The direction (vehicle width direction) is the X axis direction, the rotation direction around the X axis is called the pitch direction, the rotation direction around the Y axis is called the roll direction, and the rotation direction around the Z axis is called the yaw direction. However, the bracket device BKT of the present invention is not only applied to a moving body such as an automobile, but can also be applied to other attachments. In this case, the designations such as the pitch direction, the roll direction, and the yaw direction may be replaced with the rotation direction around the X axis, the rotation direction around the Y axis, and the rotation direction around the Z axis.

  The drive recorder bracket device BKT (hereinafter also simply referred to as a bracket BKT) of this example is mounted on a windshield 5 (see FIG. 5), which is a first attached object, as shown in FIGS. 1st bracket body 1, 2nd bracket body 2 with which the drive recorder 4 which is a 2nd attachment thing is mounted | worn, the 1st connection part 11 of the 1st bracket body 1, and the 2nd connection part 21 of a 2nd bracket body And a shaft body 3 connected to each other. The first bracket body 1, the second bracket body 2 and the shaft body 3 can be made of plastic or metal, but from the viewpoint of weight and strength, the first bracket body 1 and the second bracket body 2 are made of plastic. The shaft body 3 is preferably made of metal.

  In the bracket BKT of this example, as shown in FIG. 1, a mounting flat plate portion 16 is provided on the first bracket body 1, and the mounting flat plate portion 16 is attached to the front window via an adhesive sheet 17 made of double-sided tape or the like. Bonded to the glass 5. Further, as shown in FIG. 1, the second bracket body 2 is provided with a mounting concave portion 24, and the mounting convex portion 41 provided on the upper surface of the drive recorder 4 is inserted from the X-axis direction of FIG. A drive recorder 4 is attached to the bracket body 2. In addition, you may mount | wear with the to-be-attached thing (drive recorder and windshield) with which the 1st bracket body 1 and the 2nd bracket body 2 are mounted | worn. That is, instead of the mounting form shown in FIG. 1, a portion corresponding to the mounting flat plate portion 16 is formed in the second bracket body 2, and this is adhered to the windshield 5 and mounted on the first bracket body 1. A portion corresponding to the recess 24 may be formed and attached to the drive recorder 4.

  The first bracket body 1 of this example includes a first connecting portion 11, and the first connecting portion 11 is connected to the second connecting portion 21 of the second bracket body 2 by the shaft body 3. The first connecting portion 11 in this example includes a main body portion 12 including a spherical outer surface, a through hole 13 through which the bolt 31 of the shaft body 3 passes through the center of the main body portion 12, and both end openings 18 of the through hole 13. , 18 are formed on a pair of spherical surface portions 14, 14 formed on the outer surfaces of the respective through holes 18 and an inner wall surface of the through hole 13, and from the center of the main body portion 12 toward the both end openings 18, 18 of the through hole 13, respectively. A pair of conical surface portions 15, 15 that expand in diameter.

  The main body portion 12 is formed in a spherical body with a part cut off, and is integrally formed with the mounting flat plate portion 16 described above. The central axis of the through hole 13 passes through the center of the sphere constituting the main body portion 12 and penetrates through both end openings 18 and 18. Spherical surface portions 14 and 14 are formed around the opening portions 18 and 18, respectively, and have the same curvature as that of concave spherical surface portions 231A and 231B of bearings 23A and 23B described later. Although the outer surface of the main body portion 12 is spherical, it means that the outer surfaces other than the pair of spherical surface portions 14 and 14 are not necessarily spherical.

  As shown in FIG. 7, the center point of the through hole 13 penetrating the main body portion 12 (the center of the sphere constituting the main body portion 12) has an inner diameter slightly larger than the outer diameter of the bolt 31 of the shaft body 3. The conical surface portions 15 and 15 expand in a conical shape toward the opening portions 18 and 18 at both ends. The expansion angle of the conical surface portion 15 is around 15 ° on one side from the central axis, but can be set to an appropriate value according to the roll angle and yaw angle required for the bracket device BKT. As shown in the figure, by forming conical surface portions 15 and 15 on both sides of the through-hole 13 through which the bolt 31 of the shaft body 3 penetrates, a conical range including the roll direction and the yaw direction by the diameter expansion angle of the conical surface portion 15. The first bracket body 1 and the second bracket body 2 can swing relative to each other.

  As shown in FIGS. 2 and 3, the main body portion 12 of this example is formed with a pair of parallel plane portions 19 and 19 formed by scraping the outer surface of the sphere on the outer surface other than the pair of spherical portions 14 and 14. The pair of flat portions 19 and 19 are used when assembling the bracket BKT of this example, and the distance L1 (see FIG. 2) between the two flat portions 19 and 19 is determined by the pair of bearings 23A and 23B. It is set shorter than the shortest distance L2 (see FIG. 4) when mounted on the support portions 22A and 22B (L1 <L2). Then, bearings 23A and 23B are mounted on the support portions 22A and 22B of the second bracket 2 (the shortest distance between the bearings 23A and 23B in this state is L2), and the main body portion of the first bracket body 1 is against this. 12 is rotated by 90 ° around the Z axis, and the flat portions 19 and 19 are inserted so as to face the bearings 23A and 23B, respectively. Since the shortest distance between the bearings 23A and 23B is formed shorter than the distance L1 between the flat portions 19 and 19, the main body 12 can be easily inserted between the bearings 23A and 23B. Then, the main body 12 is rotated 90 ° around the Z axis again, and the bolts 31 of the shaft body 3 are inserted after the through holes 13 and the through holes 232A and 232B of the bearings 23A and 23B are aligned. Thereby, the 1st bracket body 1 and the 2nd bracket body 2 can be assembled easily. The flat portions 19 and 19 do not particularly function as a finished product, but become lighter as much as the sphere is cut off.

  The second bracket body 2 of this example includes a second connecting portion 21, and the second connecting portion 21 is connected to the first connecting portion 11 of the first bracket body 1 described above by the shaft body 3. The second connecting portion 21 of the present example is a pair of support portions 22A and 22B that face the pair of spherical surface portions 14 and 14 and support the bolt 31 of the shaft body 3 that penetrates the through hole 13 of the first bracket body 1. A pair of concave spherical surface portions 231A and 231B for receiving the pair of spherical surface portions 14 and 14 are formed on one surface, and the shaft body 3 is interposed between the support portions 22A and 22B and the spherical surface portions 14 and 14. And a pair of bearings 23A, 23B through which the bolt 31 passes.

  Through holes 221A and 221B through which the bolts 31 of the shaft body 3 pass are formed in a pair of support portions 22A and 22B formed in a horseshoe shape from the base portion where the mounting recess 24 is formed. . The through hole 221A formed in one support portion 22A has an inner diameter slightly larger than the outer diameter of the bolt 31, but the through hole 221B formed in the other support portion 22B is an annular shape of the bearing 23B. The shape is in accordance with the hexagonal shape of the convex portion 233B.

  An engaging recess 222A is formed at a position close to one through hole 221A, and an engaging recess 222B is formed at a part of the other through hole 221B. The engagement concave portion 222A prevents the rotation of the bearing 23A relative to the support portion 22A when the engagement convex portion 234A (see FIG. 3) formed on the bearing 23A is engaged. Similarly, the engagement concave portion 222B prevents the rotation of the bearing 23B relative to the support portion 22B by engaging the engagement convex portion 234B formed on the bearing 23B. By providing the engaging convex portions 222A and 222B and the engaging concave portions 234A and 234B, when the first bracket body 1 and the second bracket body 2 rotate around the axis of the shaft body 3, that is, in the pitch direction, the spherical surface portion 14, 14 and the concave spherical surface portions 231A and 231B are in contact with each other as a sliding surface (bearing surface). Therefore, it is possible to prevent the inner surface of the support portion 22A from sliding on the back surface of the bearing 23A, and the inner surface of the support portion 22B from sliding on the back surface of the bearing 23B. Can be realized.

  The pair of bearings 23A and 23B is formed of a member different from the support portions 22A and 22B, and is mounted inside the pair of support portions 22A and 22B facing each other as described above. A regular hexagonal annular convex portion 233B is formed on the back surface of the bearing 23B, and this annular convex portion 233B engages with the through hole 221B of the support portion 22B, but the shaft body 3 is formed inside the regular hexagonal annular convex portion 233B. By accommodating the nut 32, the rotation of the nut 32 is also prevented. Therefore, when the shaft body 3 is tightened, the rotation of the nut 32 is restricted by the annular convex portion 233B, so that only the bolt 31 needs to be turned.

  The shaft body 3 of this example includes a bolt 31 and a nut 32 that is screwed to the bolt 31, and the bolt 31 includes the above-described through holes 221A and 221B of the pair of support portions 22A and 22B and the pair of bearings 23A and 23B. The pair of spherical surface portions 14 and 14 and the pair of concave spherical surface portions 231A are inserted through the through holes 232A and 232B and the through hole 13 of the main body portion 12 and the tightening force between the bolt 31 and the nut 32 is adjusted. The pressure contact force with 231B is set.

<Assembly method of bracket device>
Next, the assembly direction of the bracket BKT will be described. As shown in FIGS. 2 and 3, the first bracket body 1, the support body 22 of the second bracket body 2, the two bearings 23 </ b> A and 23 </ b> B of the second bracket body 2, the bolt 31 and the nut 32 of the shaft body 3. In the state where they are separated from each other, the bearings 23A and 23B are first mounted on the support portions 22A and 22B of the support body 22, respectively. At this time, the engagement convex portion 234A of the bearing 23A is engaged with the engagement concave portion 222A of the support portion 22A, and the engagement convex portion 234B of the bearing 23B is engaged with the engagement concave portion 222B of the support portion 22B. 23A and 23B can be temporarily attached to the regular assembly position without falling off.

  Next, the main body portion 12 of the first bracket body 1 is rotated 90 ° around the Z axis from the normal assembly posture, and the main body portion 12 is placed in the bearing 23A so that the flat portions 19 and 19 face the bearings 23A and 23B, respectively. , 23B. At this time, since the shortest distance between the bearings 23A and 23B is shorter than the distance L1 between the flat portions 19 and 19, the main body 12 can be easily inserted between the bearings 23A and 23B.

  Then, the main body 12 of the first bracket body 1 is again rotated by 90 ° around the Z-axis to align the through hole 13 with the through holes 232A and 232B of the bearings 23A and 23B. The holes 221A, 232A, 13, 232B, and 221B are inserted and tightened with the nut 32. Thereby, the 1st bracket body 1 and the 2nd bracket body 2 can be assembled easily.

<Effects of bracket device>
As shown in FIG. 5, the drive recorder bracket BKT of this example is mounted by inserting the mounting convex portion 41 of the drive recorder 4 into the mounting concave portion 24 of the second bracket body 2, and mounting the first bracket body 1. It adheres to the windshield 5 via an adhesive sheet 17 or the like. At this time, it is necessary to adjust the angle so that the bolt axis direction of the shaft body 3 and the lens optical axis L of the drive recorder 4 are orthogonal to each other, but the bracket BKT of this example is not only in the pitch direction but also in the roll direction and the yaw direction. In addition, since the angle can be adjusted, the lens optical axis L can be made to coincide with the traveling direction of the automobile even in the case of the windshield 5 having a greatly different inclination angle.

  Further, when the drive recorder 4 is mounted on the body of the indoor mirror, it is necessary to adjust the lens optical axis L of the drive recorder 4 every time the angle of the indoor mirror is adjusted. In this case, the adjustment angle of the indoor mirror covers a wide range. However, if the bracket BKT of this example is used, the angle can be adjusted not only in the pitch direction but also in the roll direction and the yaw direction, so that the lens optical axis L can be easily set in the traveling direction of the automobile even when mounted on the indoor mirror. Can be matched.

  Further, in the bracket BKT of this example, when adjusting the angle, the tightening force of the bolt 31 and the nut 32 can be weakened, and after the angle adjustment, the tightening force of the bolt 31 and the nut 32 can be increased. While this can be performed smoothly, fluctuations in the lens optical axis L can be prevented even when automobile vibration or impact is applied. Therefore, the present invention is preferably applied to the drive recorder 4 where the field of view should not change particularly in an accident such as a car collision.

  In particular, the bracket BKT of the present example has an effect that the overall size can be made compact as compared with the conventional ball joint joint. That is, since the conventional ball joint joint is connected by fitting the ball and the tray, there is a problem that the angle fluctuates due to the vibration or impact of the vehicle (for example, Japanese Patent Application Laid-Open No. 2001-107943). In order to solve this problem, a clamp and a bolt / nut for tightening the clamp are provided outside the tray (for example, JP-A-2013-145055). On the other hand, in the bracket BKT of this example, since the bolt 31 penetrates the through hole 13 of the main body 12, the bracket BKT can be downsized.

  Further, in the structure in which the fastening force of the ball joint joint is adjusted by the ring-shaped clamp described in Japanese Patent Application Laid-Open No. 2013-145055, the tightening force of the bolt / nut portion and the tightening force of the hinge portion on the opposite side thereof. The force does not necessarily match, and a uniform tightening force does not work over the entire circumference of the clamp. For this reason, there is a possibility that the angle of the ball joint joint with respect to the specific direction is likely to fluctuate, and in order to solve this, it is necessary to increase the clamping force by increasing the clamp. On the other hand, in the bracket BKT of this example, the bolt 31 passes through the through hole 13 of the main body 12 and the bearings 23A and 23B provided on both sides of the main body 12 are tightened with the bolt 31 and the nut 32. 12, the pressure contact force of the bearings 23A, 23B (pressure contact force between the pair of spherical surface portions 14, 14 and the pair of concave spherical surface portions 231A, 231B) is equalized. Thereby, the fluctuation | variation of the angle with respect to all directions can be prevented, without enlarging the volt | bolt 31 and the nut 32. FIG.

BKT ... Bracket device 1 ... 1st bracket body 11 ... 1st connection part 12 ... Main-body part 13 ... Through-hole 14 ... Spherical surface part 15 ... Conical surface part 16 ... Flat plate part 17 for mounting | wearing 17 ... Adhesive sheet 18 ... Both ends opening part 19 ... Plane Part 2 ... 2nd bracket body 21 ... 2nd connection part 22 ... Support body 22A, 22B ... Support part 221A, 221B ... Through hole 222A, 222B ... Engagement convex part (engagement part)
23, 23A, 23B ... bearings 231A, 231B ... concave spherical surface portions 232A, 232B ... through holes 233B ... annular convex portions 234A, 234B ... engaging concave portions (engaging portions)
24 ... Mounting recess 3 ... Shaft 31 ... Bolt 22 ... Nut 4 ... Drive recorder (second attached object)
41 ... Convex part 42 ... Camera L ... Lens optical axis 5 ... Front window glass (first attachment)

Claims (4)

A first bracket body to be attached to the first attachment object, a second bracket body to be attached to the second attachment object, a first connection portion of the first bracket body, and a second connection of the second bracket body. A shaft body connecting the parts,
The first connecting part is
A main body including a spherical outer surface;
A through hole through which the shaft passes through the center of the main body,
A pair of spherical portions formed on the outer surface of each opening at both ends of the through hole;
A pair of conical surface portions that are formed on the inner wall surface of the through-hole and expand from the center of the body portion toward each of the opening portions at both ends of the through-hole,
The second connecting part is
A support portion that faces the pair of spherical portions and supports the shaft body that penetrates the through hole;
A pair of concave spherical surface portions that respectively receive the pair of spherical surface portions are formed on one surface, and a pair of bearings that are interposed between the support portion and the spherical surface portion and through which the shaft body passes are provided. And
The shaft body is a bracket device that sets a pressure contact force between the pair of spherical surface portions and the pair of concave spherical surface portions. One of the first attached object and the second attached object is a drive recorder, and the other of the first attached object and the second attached object is a vehicle window glass or an interior mirror,
The bracket device according to claim 1, wherein the drive recorder is mounted such that an axial direction of the shaft body and a lens optical axis of the drive recorder are orthogonal to each other.   The bracket device according to claim 1 or 2, wherein the bearing and the support portion each have an engaging portion that prevents relative rotation around the shaft of the shaft body.   The said main-body part has a pair of parallel plane part in outer surfaces other than the said pair of spherical surface part, and the space | interval of the said plane part is set shorter than the shortest distance between the said pair of bearings. The bracket device according to any one of the above.

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