JP6250479B2 - Vibration isolator for camera - Google Patents

Description

  The present invention relates to a camera vibration isolator that absorbs vibration when a camera is mounted on a moving body such as an automobile or a radio controlled helicopter.

  As a vibration isolator for a camera that absorbs vibration when a camera is mounted on a moving body such as a radio controlled helicopter, a configuration in which vibration generated by the moving body is absorbed by a plurality of types of vibration absorbing members has been proposed (Patent Literature). 1 and 2). For example, in the camera vibration isolator described in Patent Document 1, vibrations generated by a moving body are absorbed by a main frame made of a vibration isolating rubber, an elastic subframe, and a damping steel plate. Moreover, in the camera vibration isolator described in Patent Document 2, vibration generated in the moving body is absorbed by an insulator and a stabilizer provided between the frames (see Patent Documents 1 and 2).

JP-A-6-125490 JP 2009-248853 A

  However, as in the techniques described in Patent Documents 1 and 2, in the configuration in which the vibration generated by the moving body is absorbed by a plurality of types of vibration absorbing members, the frame is used to arrange the plurality of types of vibration absorbing members at optimal locations. It is necessary to build a complicated. For this reason, there is a problem that the cost is increased and the camera vibration isolator is increased in size.

  In view of the above problems, an object of the present invention is to provide a camera vibration isolator that can absorb vibration generated by a moving body before it is transmitted to the camera with a simple configuration.

  In order to solve the above-described problems, the present invention is a camera vibration isolator used when a camera is mounted on a moving body, and is provided at a plurality of shafts and one end of the plurality of shafts. A support member attached to the movable body, a plurality of through holes through which the plurality of shafts pass, and a camera holding member for holding the camera, the flange portion and the camera holding A vibration-absorbing elastic member disposed between the flange portion and the camera holding member, the outer peripheral surface of the shaft and the inner peripheral surface of the through hole extending over the entire circumference. It is separated.

In the present invention, an elastic member for absorbing vibration is located between the support member and the camera holding member in a state where the camera is mounted on a moving body such as an automobile or a radio controlled helicopter via the camera vibration isolator. The camera holding member is supported by the flange portion of the support member via the elastic member. For this reason, the vibration generated in the moving body is absorbed by the elastic member before being transmitted to the camera holding member. Further, the shaft of the support member fixed to the moving body passes through the through hole of the camera holding member that holds the camera, and in this state, the outer peripheral surface of the shaft and the inner peripheral surface of the through hole are separated over the entire circumference. Yes. For this reason, even when the movable range of the camera holding member in the direction orthogonal to the axis is limited by the shaft and the through hole, a situation in which vibration generated in the moving body is directly transmitted to the camera holding member does not occur. Therefore, it is possible to absorb the vibration generated in the moving body before it is transmitted to the camera with a simple configuration. Therefore, it is possible to reduce the cost and size of the camera vibration isolator.

  In the present invention, the support member includes a stopper on a side opposite to the flange portion with respect to the camera holding member to limit a movable range of the camera holding member in a direction away from the flange portion. It is preferable that the camera holding member is separated in the axial direction of the shaft. According to such a configuration, even when the movable range of the camera holding member in the axial direction of the shaft is limited, a situation in which vibration generated in the moving body is directly transmitted to the camera holding member does not occur.

  In this invention, it is preferable that the said stopper is provided in the other edge part of the said axis | shaft. According to this configuration, the movable range of the camera holding member in the axial direction of the shaft can be limited with a simple configuration.

  In this invention, it is preferable that the said elastic member and the said flange part are used in the state which the said elastic member was compressed because it is located below the gravitational direction rather than the said camera holding member. According to such a configuration, the elastic member and the flange portion do not necessarily have to be connected by a method such as adhesion, and the elastic member and the camera holding member do not necessarily have to be connected by a method such as adhesion.

  In the present invention, the support member may be configured to be fixed to the moving body by the flange portion.

  In the present invention, the elastic member is preferably provided at a plurality of locations. According to this configuration, the camera holding member can be supported in an appropriate posture.

  In the present invention, it is preferable that the elastic member is provided at a plurality of locations so as to surround the camera when viewed from the axial direction of the shaft. According to this configuration, the camera holding member can be supported in an appropriate posture.

  In the present invention, when viewed from the axial direction of the axis, the line symmetric about the first imaginary line passing through the camera and the second imaginary line orthogonal to the first imaginary line passing through the camera. It is preferable that the elastic member is arranged at a plurality of line symmetrical locations. According to this configuration, the camera holding member can be supported in an appropriate posture.

  In the present invention, the elastic member is preferably a silicone gel. According to this configuration, it is possible to effectively absorb the vibration generated in the moving body.

  In the present invention, the silicone gel preferably contains a filler for adjusting hardness. According to this configuration, it is possible to effectively absorb the vibration generated in the moving body and to support the camera holding member in an appropriate posture.

In the present invention, an elastic member for absorbing vibration is located between the support member and the camera holding member in a state where the camera is mounted on a moving body such as an automobile or a radio controlled helicopter via the camera vibration isolator. The camera holding member is supported by the flange portion of the support member via the elastic member. For this reason, the vibration generated in the moving body is absorbed by the elastic member before being transmitted to the camera holding member. Further, the shaft of the support member fixed to the moving body passes through the through hole of the camera holding member that holds the camera, and in this state, the outer peripheral surface of the shaft and the inner peripheral surface of the through hole are separated over the entire circumference. Yes. For this reason, even when the movable range of the camera holding member in the direction orthogonal to the axis is limited by the shaft and the through hole, a situation in which vibration generated in the moving body is directly transmitted to the camera holding member does not occur. Therefore, it is possible to absorb the vibration generated in the moving body before it is transmitted to the camera with a simple configuration. Therefore, it is possible to reduce the cost and size of the camera vibration isolator.

It is explanatory drawing of the vibration isolator for cameras which concerns on Embodiment 1 of this invention. It is sectional drawing which expands and shows the axial periphery of the camera vibration isolator which concerns on Embodiment 1 of this invention. It is explanatory drawing of the vibration isolator for cameras which concerns on Embodiment 2 of this invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In the following description, the gravity direction (up and down direction) is the Z direction, the horizontal direction orthogonal to the Z direction is the X direction, and the horizontal direction orthogonal to the X direction and the Z direction is the Y direction.

[Embodiment 1]
(overall structure)
FIG. 1 is an explanatory diagram of a camera vibration isolator according to Embodiment 1 of the present invention. FIGS. 1A and 1B are a perspective view of a camera vibration isolator and a camera vibration isolator. FIG. FIG. 2 is an enlarged cross-sectional view showing the periphery of the shaft of the camera vibration isolator according to Embodiment 1 of the present invention.

  1 and 2 is an apparatus for mounting a camera 10 on a moving body 100 such as an automobile or a radio controlled helicopter. In this embodiment, the camera vibration isolating apparatus 1 is provided on the upper surface side of the moving body 100. The camera 10 is mounted on the fixing unit 110 via the camera vibration isolator 1. As the camera 10, any camera of a type in which the camera 10 itself has a shake correction function or a type that does not have a shake correction function can be used.

  The camera vibration isolator 1 generally includes a support member 2 fixed to the moving body 100, a camera holding member 6 that holds the camera 10, and vibration absorption disposed between the support member 2 and the camera holding member 6. And an elastic member 7 for use. In this embodiment, the camera 10 has a rectangular parallelepiped shape, and the camera 10 has a short side extending in the X direction and a long side in the Y direction when viewed from the axial direction (Z direction) of the shaft 4 described later. It is a quadrangle that extends. Further, in the camera 10, the entrance 11 for taking in light from the subject faces one side in the X direction.

  The support member 2 includes a plurality of shafts 4 extending in the Z direction, and a flange portion 3 provided at one end (lower end) of the plurality of shafts 4. The flange portion 3 is a plate having a quadrangular planar shape, with a short side extending in the X direction, a long side extending in the Y direction, and a plate thickness direction facing the Z direction. The shaft 4 has a round bar shape and is provided at four locations corresponding to the four corners of the flange portion 3. In this embodiment, the shaft 4 is made of, for example, a bolt or a rivet, and the lower end portion is fixed to the support member 2.

  In this embodiment, the camera holding member 6 is a plate having a quadrangular planar shape, the short side extends in the X direction, the long side extends in the Y direction, and the plate thickness direction faces the Z direction. Yes. The camera holding member 6 faces the flange portion 3 on one side (upper side) in the Z direction, and holds the camera 10 at the approximate center of the surface (upper surface) opposite to the side where the flange portion 3 is located. doing.

The camera holding member 6 is formed with four through holes 60 through which the four shafts 4 of the support member 2 pass. Here, the inner peripheral surface of the through hole 60 and the outer peripheral surface of the shaft 4 are separated from each other over the entire periphery. For this reason, the camera holding member 6 is movable in the Z direction. However, since the elastic member 7 is disposed between the camera holding member 6 and the flange portion 3, the camera holding member 6 is in the middle position of the shaft 4 in the Z direction.

  The elastic member 7 is disposed between the flange portion 3 and the camera holding member 6 and supports the camera holding member 6 from the lower side in the Z direction. For this reason, the elastic member 7 is in contact with both the surface (upper surface) of the flange portion 3 on the camera holding member 6 side and the surface (lower surface) of the camera holding member 6 on the flange portion 3 side. Here, the elastic member 7 is elastically deformable in the X direction, the Y direction, and the Z direction. In this embodiment, a silicone gel is used as the elastic member 7, and the silicone gel can be elastically deformed in the X direction, the Y direction, and the Z direction. The silicone gel contains a filler for adjusting the hardness, and the hardness of the silicone gel is adjusted.

  The elastic member 7 is disposed at a plurality of locations between the flange portion 3 and the camera holding member 6, and the elastic member 7 has a column shape such as a prismatic shape or a cylindrical shape. In this embodiment, the elastic member 7 has a prismatic shape. Further, when viewed from the axial direction (Z direction) of the shaft 4, the elastic member 7 is provided at a plurality of locations so as to surround the camera 10. In this embodiment, when viewed from the axial direction (Z direction) of the axis 4, the second virtual line is symmetrical with respect to the first virtual line X0 passing through the camera 10 and is orthogonal to the first virtual line X0 through the camera. Elastic members 7 are arranged at a plurality of line-symmetrical locations around the line Y0. For example, when viewed from the axial direction (Z direction) of the shaft 4, the elastic member 7 has a total of two locations on both sides in the Y direction with respect to the camera 10 and a total of four locations on both sides in the X direction with respect to the camera 10. Has been placed.

  In the camera vibration isolator 1 of the present embodiment, the support member 2 is movable on the side opposite to the flange portion 3 (upper side) with respect to the camera holding member 6 in the direction in which the camera holding member 6 is separated from the flange portion 3. A stopper 5 for limiting the range is provided. Here, the stopper 5 is separated from the camera holding member 6 in the Z direction. For this reason, the camera holding member 6 can move upward until it comes into contact with the stopper 5.

  In this embodiment, the stopper 5 is provided at the other end (upper end) of the shaft 4. More specifically, the shaft 4 is composed of a headed bolt or rivet, and the stopper 5 is integrally formed with the shaft 4 by the head at the upper end.

(Assembly method)
To assemble the camera vibration isolator 1 of this embodiment, the elastic member 7 is disposed at a predetermined position on the upper surface of the flange portion 3, and then the camera holding member 6 holding the camera 10 is overlaid on the elastic member 7. In this state, the elastic member 7 is pressed downward by the camera holding member 6 and the camera 10 and supports the camera holding member 6 from the lower side in the Z direction while being compressed in the Z direction. Next, a headed bolt or rivet is passed through the through hole 60 of the camera holding member 6, and the lower end portion is fixed to the flange portion 3. As a result, the shaft 4 passes through the through hole 60, and the stopper 5 is provided on the opposite side (upper side) from the flange portion 3 with respect to the camera holding member 6.

(Operation and main effect of this form)
Thus, in order to mount the camera vibration isolator 1 holding the camera 10 on the moving body 100, the flange portion 3 is fixed to the moving body 100. In this state, the elastic member 7 supports the camera holding member 6 from the lower side in the Z direction while being compressed in the Z direction. For this reason, an image can be taken by the camera 10 while the moving body 100 is moving. At that time, vibration is generated in the moving body 100, but in this embodiment, the camera holding member 6 is supported by the support member 2 only by the elastic member 7. For this reason, the vibration generated in the moving body 100 is absorbed by the elastic member 7 before being transmitted to the camera holding member 6.

The shaft 4 of the support member 2 fixed to the moving body 100 passes through the through hole 60 of the camera holding member 6 that holds the camera 10, and in this state, the outer peripheral surface of the shaft 4 and the inner peripheral surface of the through hole 60. Are spaced all around. For this reason, even when the movable range of the camera holding member 6 in the direction orthogonal to the axis 4 is limited by the shaft 4 and the through hole 60, vibration generated in the moving body 100 is directly transmitted to the camera holding member 6. The situation does not occur. The support member 2 is provided with a stopper 5 on the opposite side of the camera holding member 6 from the flange portion 3 for limiting the movable range in the direction in which the camera holding member 6 is separated from the flange portion 3. The stopper 5 and the camera holding member 6 are separated from each other in the axial direction of the shaft 4. For this reason, even when the movable range of the camera holding member 6 in the axial direction of the shaft 4 is limited, the situation where the vibration generated in the moving body 100 is directly transmitted to the camera holding member 6 does not occur. Therefore, with a simple configuration, the vibration generated in the moving body 100 can be absorbed before it is transmitted to the camera 10. Therefore, the cost and size of the camera vibration isolator 1 can be reduced.

  In addition, since the stopper 5 is provided at the other end of the shaft 4, the movable range of the camera holding member 6 in the axial direction of the shaft 4 can be limited with a simple configuration.

  The camera vibration isolator 1 is used in a state where the elastic member 7 is compressed by the elastic member 7 and the flange portion 3 being positioned below the camera holding member 6 in the direction of gravity. For this reason, the elastic member 7 and the flange part 3 do not necessarily need to be connected by a method such as adhesion, and the elastic member 7 and the camera holding member 6 do not necessarily need to be connected by a method such as adhesion.

  Further, since the elastic member 7 is provided at a plurality of locations, the camera holding member 6 can be supported in an appropriate posture. In particular, when viewed from the axial direction of the shaft 4, the elastic member 7 is provided at a plurality of locations so as to surround the camera 10. Moreover, when viewed from the axial direction of the axis 4, the line is symmetrical about the first virtual line X0 passing through the camera 10, and the second virtual line Y0 passing through the camera 10 and orthogonal to the first virtual line X0 is the center. The elastic members 7 are arranged at a plurality of line symmetrical positions. For this reason, the camera holding member 6 can be supported in an appropriate posture.

  The plurality of elastic members 7 are all silicone gels. Moreover, the elastic member 7 is made of a columnar silicone gel. For this reason, since the elastic member 7 is elastically deformed in the X direction, the Y direction, and the Z direction, the vibration generated in the moving body 100 can be effectively absorbed. Further, since the silicone gel includes a filler for adjusting the hardness, it can effectively absorb the vibration generated in the moving body 100 and can support the camera holding member 6 in an appropriate posture. .

[Embodiment 2]
FIG. 3 is an explanatory diagram of the camera vibration isolator according to Embodiment 2 of the present invention. Since the basic configuration of this embodiment is the same as that of Embodiment 1, common portions are denoted by the same reference numerals and description thereof is omitted.

  The camera vibration isolator 1 shown in FIG. 3 is also a device for mounting the camera 10 on a moving body 100 such as an automobile or a radio controlled helicopter, as in the first embodiment. However, in Embodiment 1, the flange portion 3 is fixed to the upper surface side of the moving body 100, but in this embodiment, the stopper 5 is fixed to the lower surface side of the moving body 100. The camera 10 is held on the lower surface side of the camera holding member 6. For this reason, an opening 30 is formed in the flange portion 3 so that the camera 10 protrudes downward. The stopper 5 is a plate-like member that is separate from the shaft 4.

Also in the camera vibration isolator 1 configured as described above, the elastic member 7 made of silicone gel is disposed between the flange portion 3 and the camera holding member 6 as in the first embodiment. The camera holding member 6 is supported from the lower side in the Z direction. For this reason, the elastic member 7 is in contact with both the surface (upper surface) of the flange portion 3 on the camera holding member 6 side and the surface (lower surface) of the camera holding member 6 on the flange portion 3 side. In this embodiment as well, the elastic member 7 is disposed at a plurality of locations between the flange portion 3 and the camera holding member 6, and the elastic member 7 has a columnar shape such as a prismatic shape or a cylindrical shape. .

  Even in this configuration, since the camera holding member 6 is supported by the support member 2 only by the elastic member 7 as in the first embodiment, before the vibration generated in the moving body 100 is transmitted to the camera holding member 6. Is absorbed by the elastic member 7. The shaft 4 of the support member 2 fixed to the moving body 100 passes through the through hole 60 of the camera holding member 6 that holds the camera 10, and in this state, the outer peripheral surface of the shaft 4 and the inner peripheral surface of the through hole 60. Are spaced all around. For this reason, even when the movable range of the camera holding member 6 in the direction orthogonal to the axis 4 is limited by the shaft 4 and the through hole 60, vibration generated in the moving body 100 is directly transmitted to the camera holding member 6. The situation does not occur. The support member 2 is provided with a stopper 5 on the opposite side of the camera holding member 6 from the flange portion 3 for limiting the movable range in the direction in which the camera holding member 6 is separated from the flange portion 3. The stopper 5 and the camera holding member 6 are separated from each other in the axial direction of the shaft 4. For this reason, even when the movable range of the camera holding member 6 in the axial direction of the shaft 4 is limited, the situation where the vibration generated in the moving body 100 is directly transmitted to the camera holding member 6 does not occur. Therefore, with a simple configuration, the vibration generated in the moving body 100 can be absorbed before it is transmitted to the camera 10. Therefore, the same effects as those of the first embodiment can be achieved, such as cost reduction and size reduction of the camera vibration isolator 1.

[Modification 1 of Embodiments 1 and 2]
In the above embodiment, silicone gel is used as the elastic member 7, but a coil spring or the like may be used as the elastic member 7, and in this case, the coil spring has the property that it can be elastically deformed in the X, Y, and Z directions. It can be used to absorb vibrations.

[Modification 2 of Embodiments 1 and 2]
In the first and second embodiments described above, the elastic member 7 and the flange portion 3 are used in a compressed state because the elastic member 7 and the flange portion 3 are positioned below the camera holding member 6 in the gravitational direction. The flange portion 3 may be positioned above the camera holding member 6 in the direction of gravity so that the elastic member 7 is used in an extended state. In other words, the camera vibration isolator 1 described with reference to FIGS. 1, 2 and 3 may be used upside down. Even in this case, if the elastic member 7 and the flange portion 3 are connected by a method such as adhesion and the elastic member 7 and the camera holding member 6 are connected by a method such as adhesion, the camera holding member 6 is held by the elastic member 7. can do.

  In the case of adopting such a configuration, either the silicone gel or the coil spring may be used as the elastic member 7, but the camera holding member 6 can be supported in a stable state by using the coil spring. it can.

[Modification 3 of Embodiments 1 and 2]
In the above embodiment, the through hole 60 is formed at a position separated from the end of the camera holding member 6. However, the through hole 60 may be formed in a cutout shape at the end of the camera holding member 6. Even in this case, if the through holes 60 are formed on both sides in the X direction and both sides in the Y direction of the camera holding member 6, the movable range of the camera holding member 6 in the X direction and Y direction can be limited.

Moreover, in the said embodiment, although the elastic member 7 has columnar shapes, such as a prism shape and a column shape, it is good also considering the shape when a prismatic shape is seen from an axial direction as a rectangular shape. In this case, the vibration absorptivity in the direction orthogonal to the axial direction differs between the longitudinal direction and the short direction of the rectangular shape. Therefore, when the magnitude of the generated vibration varies depending on the direction, the vibration can be effectively absorbed by arranging a rectangular elastic member according to the vibration intensity. Further, among the plurality of elastic members 7, a part of the elastic members 7 are arranged so that the longitudinal direction is along the X axis, and the other elastic members are arranged so that the longitudinal direction is along the Y axis direction. The vibration absorption may be optimized.

DESCRIPTION OF SYMBOLS 1 Camera vibration isolator 2 Support member 3 Flange part 4 Shaft 5 Stopper 6 Camera holding member 7 Elastic member 10 Camera 11 Incident port 30 Opening part 60 Through-hole 100 Moving body 110 Fixed part

Claims (10)

An anti-vibration device for a camera used when mounting a camera on a moving body,
A support member that includes a plurality of shafts and a flange portion provided at one end of the plurality of shafts, and is attached to the movable body;
A plurality of through-holes through which the plurality of shafts pass, and a camera holding member for holding the camera;
An elastic member for vibration absorption disposed between the flange portion and the camera holding member and in contact with both the flange portion and the camera holding member;
Have
An anti-vibration device for a camera, characterized in that the outer peripheral surface of the shaft and the inner peripheral surface of the through hole are spaced apart over the entire circumference. The support member includes a stopper that limits a movable range of the camera holding member in a direction away from the flange portion on a side opposite to the flange portion with respect to the camera holding member.
2. The camera vibration isolator according to claim 1, wherein the stopper and the camera holding member are separated from each other in the axial direction of the shaft.   The camera vibration isolator according to claim 2, wherein the stopper is provided at the other end of the shaft.   The elastic member and the flange portion are positioned below the camera holding member in the direction of gravity, so that the elastic member is used in a compressed state. The camera vibration isolator described in 1.   The camera vibration isolator according to claim 4, wherein the support member is fixed to the moving body by the flange portion.   The camera vibration isolator according to any one of claims 1 to 5, wherein the elastic member is provided at a plurality of locations.   The camera vibration isolator according to claim 6, wherein the elastic member is provided at a plurality of locations so as to surround the camera when viewed from the axial direction of the shaft. When viewed from the axial direction of the axis,
The elastic members are arranged in a plurality of positions symmetrical with respect to a first imaginary line passing through the camera and symmetrical with respect to a second imaginary line passing through the camera and perpendicular to the first imaginary line. The camera vibration-proof device according to claim 7, wherein:   The camera vibration isolator according to any one of claims 1 to 8, wherein the elastic member is a silicone gel.   The camera vibration isolator according to claim 9, wherein the silicone gel contains a filler for adjusting hardness.

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