JP5523586B2 - Fixing device and head - Google Patents

Description

  The present invention relates to a fixing device and a pan head for fixing an attachment such as an optical instrument.

  FIG. 6 shows a conventional pan head 1. For example, a pan rotating body 3 is provided so as to be rotatable in a horizontal direction around a vertical shaft body 2 provided at the upper end of a tripod. A tilt rotating body 5 is provided so as to be rotatable in the vertical direction around the horizontal shaft body 4. The horizontal shaft body 6 is provided integrally with the tilt rotating body 5 in a direction intersecting with the horizontal shaft body 4. As shown in the figure, an attachment support 7 for supporting an attachment such as an optical device (for example, a camera) is provided so as to be rotatable in the vertical direction, and the pan rotation body 3 and the tilt rotation body 5 are the tilt rotation body. 5 is fastened and fixed by a one-action turning operation of the operating shaft body 9 attached through the fixing notch portion 8 provided in 5 (see, for example, Patent Document 1).

JP 2004-125029 A (first page, FIG. 1)

  As shown in FIG. 7A, in the operation shaft body 9, a shaft portion 9a is loosely fitted in a hole 5a provided in one side portion of the tilt rotating body 5, and the tilt rotating body 5 is fitted to the shaft portion 9a. A locking portion 9b that engages with the side surface of one side is engaged, and a screw portion 9c is screwed into a screw hole 5b provided on the other side portion of the tilt rotating body 5 via a fixing cutout portion 8. Has been.

  For this reason, as shown in FIG. 7B, when the operation shaft body 9 is rotated in the tightening direction by the screw portion 9c, the tilt rotating body 5 is fixed on the opposite side of the fixing notch portion 8. With the point P as a fulcrum, the portion where the gap of the fixing notch 8 is deformed is compressed, and the portion where the screw hole 5b of the tilt rotating body 5 is provided with respect to the center line a of the vertical shaft body 2 The angle changes from line a to axis b. Even if this change in angle is slight, the amount of blurring of the field of view captured by the camera as the attached object placed on the attached object support 7 appears significantly, and before the operation shaft body 9 is fixedly operated. There is a problem that the field of view adjusted to move by the fixed operation of the operation shaft body 9.

  The present invention has been made in view of these points, and an object thereof is to provide a fixing device and a pan head that can prevent an angle change due to a fixing operation.

The invention described in claim 1 is a fixing device for fixing an object to be attached which is an optical device, and a fixing notch is formed between one end in the circumferential direction and the other end in the circumferential direction. A cylindrical rotating body having one rotating body surface formed at one end in the circumferential direction, a fixed body having the other rotating body surface that is rotatably fitted to the one rotating body surface of the rotating body, and Inserted from the other circumferential end of the rotating body through the fixing notch, screwed into the fixed body, and rotatably engaged with the other circumferential end of the rotating body. An operation shaft body that clamps the circumferential one end and the other circumferential end of the rotating body in a direction to compress the fixing notch, and an object to be attached, which is an optical device, provided on the fixed body It is the fixing device which comprised the support body for supporting .

  According to a second aspect of the present invention, there is provided a base body, a pan rotating body that is provided on the base body and that rotates in a horizontal direction around a vertical axis, and is provided on the pan rotating body and has one circumferential end. A cylindrical tilt rotating body that rotates in the vertical direction about a horizontal axis line, in which a fixing notch is formed between the other end in the circumferential direction and one rotating body surface is formed at one end in the circumferential direction And a fixed body having the other rotating body surface rotatably fitted to the one rotating body surface of the tilt rotating body, and inserted through the fixing notch from the other circumferential end of the tilt rotating body. And is engaged with the other end in the circumferential direction of the tilt rotating body, and is engaged with the other end in the circumferential direction by the rotation operation. To compress the above-mentioned fixing notch To an operating shaft body nipping, provided on the fixation body is a camera platform that and a support for supporting an object to be attached object.

  According to a third aspect of the present invention, in the pan head of the second aspect, the one rotary body surface formed at one end in the circumferential direction of the tilt rotating body is a cross section along the operation direction of the operation shaft body. Is formed in a concave and circular arc shape, and an aspherical surface in which the cross section in a direction perpendicular to the operation shaft body is concave and cannot rotate around the axis of the operation shaft body The rotating body surface of the fixed body having a shape is formed in a convex arc shape in which a section along the operation direction of the operation shaft body is fitted with the concave arc shape, and the operation shaft The cross section in the direction orthogonal to the body has an aspherical shape formed into a convex non-rotating shape that fits with the concave non-rotating shape.

  According to a fourth aspect of the present invention, in the pan head according to the second or third aspect, the other concave rotating body surface is formed at the other circumferential end of the tilt rotating body. The engaging body having the other convex rotating body surface that is rotatably fitted to the other concave rotating body surface is engaged.

  According to the first aspect of the present invention, the other rotating body surface of the fixed body is rotatably fitted to one rotating body surface formed at one circumferential end of the rotating body, and the circumferential direction of the rotating body and the like. The operation shaft inserted from the end through the fixing notch is screwed into the fixed body and is rotatably engaged with the other end in the circumferential direction of the rotating body. The circumferential end of the rotating body and the other circumferential end of the rotating body are clamped in the direction in which the fixing notch is compressed, so that the circumferential end of the rotating body is deformed by the deformation of the rotating body that occurs when the operating shaft body is fixed. Even if the angle changes, the angle change of the rotating body is absorbed by the relative rotational movement between one rotating body surface of the rotating body and the other rotating body surface of the fixed body, and the fixed body is fixed during the fixing operation. It is possible to prevent the angle from changing.

  According to the second aspect of the present invention, one rotating body surface is formed at one circumferential end of the tilt rotating body provided on the pan rotating body, and the other rotating body surface of the fixed body rotates on the one rotating body surface. The operation shaft body that is movably fitted and inserted from the other circumferential end of the tilt rotating body through the fixing notch is screwed to the fixed body and is rotated to the other circumferential end of the tilt rotating body. The operation shaft body is fixed because the circumferentially one end and the other end in the circumferential direction of the tilt rotating body are clamped in the direction of compressing the fixing notch by the fixed operation by the rotation of the operation shaft. Even if one end in the circumferential direction of the tilt rotating body changes due to the deformation of the tilt rotating body that occurs during the operation, the angle change of the tilt rotating body is caused by the rotation of one rotating body of the tilt rotating body and the other rotating body of the fixed body. Absorbed by relative rotational motion between Thus, the fixed body can be prevented from changing in angle during the fixing operation, and the mounted object supported by the support provided on the fixed body can be prevented from changing in angle, and an optical device as a mounted object The amount of blurring of the field of view captured by can be suppressed to a slight amount of parallel movement.

  According to the third aspect of the present invention, one of the rotating body surfaces formed at one end in the circumferential direction of the tilt rotating body is formed in a circular arc shape having a concave cross section along the operation direction of the operation shaft body. The rotating body surface of the fixed body is formed in a convex arc shape that fits the concave arc shape in the section along the operation direction of the operation shaft body. With the combined structure, the effect of the rotating body surface can be obtained, and one rotating body surface has a concave cross section in a direction orthogonal to the operating shaft body and cannot rotate around the axis of the operating shaft body. The rotating body surface of the fixed body has a convex aspheric shape in which a cross section in a direction orthogonal to the operation shaft body is fitted to the concave aspheric shape. Therefore, the tilt rotating body and the fixed body are structured by fitting the uneven aspherical shape. Separate without providing a detent means can be easily and reliably prevented possibility of rotating around the axis of the fixed body operating shaft during.

  According to the fourth aspect of the present invention, the other concave rotating body surface is formed at the other circumferential end of the tilt rotating body, and the engaging body engaged with the operation shaft body on the other concave rotating body surface. Since the other convex rotating body surface is pivotably fitted, the angle between the operating shaft body and the other circumferential end of the tilt rotating body changes when the tilt rotating body is fixed. The angle change can be absorbed by the relative rotational motion between the other concave rotating body surface and the convex rotating body surface of the engaging body, and the fixed body can be more reliably prevented from changing the angle during the fixing operation. At the same time, the tightening force of the operating shaft body acts on the tilt rotating body evenly around the axis via the other uneven surface of the rotating body, and the tightening force is not biased. Therefore, the operation shaft body can be operated smoothly.

It is sectional drawing which shows one Embodiment of the fixing device and pan head which concern on this invention. It is sectional drawing which shows the fixed state of pan rotation and tilt rotation of a pan head same as the above. It is a disassembled perspective view of a pan head same as the above. It is a perspective view which shows the tilt rotation body of a pan head same as the above. It is a perspective view of a pan head same as the above. It is sectional drawing of the conventional pan head. It is sectional drawing explaining the fault of the conventional pan head, (a) shows the state before fixation, (b) shows the state after fixation.

  Hereinafter, the present invention will be described in detail based on one embodiment shown in FIGS.

  1, 2, and 5, reference numeral 11 denotes a pan head, and the pan head 11 includes a base body 12 that is detachably attached to an upper end portion of a leg body (not shown) such as a tripod. The base body 12 is formed with a substantially cylindrical vertical shaft portion 13, and a large-diameter portion 14 for positioning is integrally provided at a lower end portion of the vertical shaft portion 13.

  As shown in FIG. 3, the base body 12 is fixed to an upper end portion of a leg body such as a tripod by a screw 15 screwed to the vertical shaft portion 13. An annular locking groove 16 is formed in the upper part of the vertical shaft portion 13.

  A pan rotating body 21 that rotates in the horizontal direction around the vertical axis is fitted to the vertical shaft portion 13 of the base body 12 so as to be freely rotatable. The pan rotating body 21 is formed integrally with, for example, a synthetic resin, and has a substantially cylindrical horizontal shaft portion 22 having an axis in the horizontal direction. A notch (divided groove) 23 is formed.

  Both end portions of the horizontal shaft portion 22 of the pan rotating body 21 are formed in a concave shape, and a locking screw 24 is screwed into one end portion of the horizontal shaft portion 22 in parallel to the horizontal axis. The locking screw 24 is engaged with an annular locking groove 16 provided in the vertical shaft portion 13 of the base body 12 inside the pan rotating body 21, and fulfills the function of preventing the pan rotating body 21 from being removed. Cover plates 26 are fitted into the recesses 25 formed at both ends of the horizontal shaft portion 22, respectively.

  The pan rotating body 21 is rotatably fitted with a tilt rotating body 31 as a cylindrical rotating body that rotates in the vertical direction about the horizontal axis. The tilt rotating body 31 is formed integrally with, for example, a synthetic resin, and has a substantially cylindrical fitting fitted to the outer peripheral side of the horizontal shaft portion 22 of the pan rotating body 21 so as to be rotatable in the vertical direction. A long hole 33 is formed in the circumferential direction of the fitting cylinder part 32 at the lower part of the fitting cylinder part 32, and the vertical shaft part 13 of the base body 12 is fitted into the long hole 33. Has been.

  A fixing notch (slit part) 34 is formed in the axial direction on the upper rear side of the fitting cylinder part 32 of the tilt rotating body 31, and the fitting cylinder part 32 opposed via the fixing notch 34. One fastening part 35 and the other fastening part 36 are integrally formed respectively at one circumferential end and the other circumferential end, and through holes 37 and 38 are formed in these fastening parts 35 and 36, respectively. Has been.

  As shown in FIG. 4, a semi-cylindrical portion 41 that is open on the opposite side of the fixing notch 34 is formed on one fastening portion 35 located at one end in the circumferential direction of the tilt rotating body 31. A concave rotating body surface 42 as one rotating body surface is formed inside the semi-cylindrical portion 41. A concave rotating body surface 42 formed at one end in the circumferential direction of the tilt rotating body 31 is a circle whose longitudinal section along the operating direction of the operating shaft body (such as an operating handle) 45 is concave and part of a perfect circle. It has a circular arc surface 42a formed in an arc shape, and the cross section in the direction orthogonal to the operation shaft body 45 is concave and formed in a non-rotation type that disables rotation around the axis of the operation shaft body 45. It has a non-spherical shape.

  In addition to the rectangular cross section shown in FIG. 4, the concave rotating body surface 42 may be a non-rotating aspherical shape such as a rhombus cross section, a hexagonal cross section, an oval cross section or an elliptic cross section. good. Three-dimensionally, the rotating body surface 42 may be not only the illustrated cylindrical shape, but also an aspherical shape obtained by inverting an abacus ball shape, a barrel shape, or a rugby ball shape into a concave shape.

  As shown in FIGS. 1 and 2, a fixed body 44 having a convex rotating body surface 43 as the other rotating body surface is rotatably fitted to the concave rotating body surface 42 of the tilt rotating body 31. The tip of an operation shaft 45 that can be rotated and inserted into one fastening part 35 from a through hole 38 of a fastening part 36 provided at the other circumferential end of the tilt rotating body 31 through a fixing notch 34. A screw part 46 formed in the part is screwed into the screw hole 47 of the fixed body 44. On the opposite side of the operating shaft body 45 from the threaded portion 46, an operating portion 48 is provided.

  As shown in FIG. 3, the rotating body surface 43 of the fixed body 44 has a convex and true shape in which the longitudinal section along the operation direction of the operation shaft body 45 is fitted to the concave arc surface 42 a of the semicylindrical portion 41. It has an arc surface 43a formed in an arc shape that is a part of a circular shape, and a shaft portion 43b that is screwed with the screw portion 46 of the operation shaft body 45 is integrally formed at the center position of the convex arc surface 43a. Is formed.

  The rotating body surface 43 of the fixed body 44 is a convex and operating shaft whose cross section in a direction orthogonal to the operating shaft body 45 is fitted to the concave aspherical shape of the semicylindrical portion 41 shown in FIG. It has an aspherical shape formed in a non-rotating shape that disables rotation about the axis of the body 45.

  The convex rotating body surface 43, which is a non-rotating aspherical shape, includes a rectangular cross section shown in FIG. 3, that is, a rhombus (not shown) in addition to a half shape obtained by dividing the cylindrical shape into two in the axial direction. A cross section, hexagonal cross section, oval cross section, elliptical cross section, or the like may be used. Three-dimensionally, the rotating body surface 43 may have a shape such as an abacus ball shape, a barrel shape, or a rugby ball shape as well as the illustrated cylindrical shape.

  Further, the non-rotation that prevents the fixed body 44 from rotating about the axis of the operation shaft body 45 is the aspherical surface of the concavo-convex fitting surface on which the tilt rotating body 31 and the fixed body 44 are fitted. Depending on the shape, it can be easily realized without providing a separate detent means between the tilt rotating body 31 and the fixed body 44, but the concave and convex fitting surfaces of the tilt rotating body 31 and the fixed body 44 are not shown. In the case of a spherical shape, a pin or key is provided on one side, and a pin or key fitting groove is provided on the other side to prevent the fixed body 44 from rotating about the axis of the operation shaft body 45. You may make it do.

  As shown in FIGS. 1 and 2, the other fastening portion 36 located at the other circumferential end of the tilt rotating body 31 has the other opening that is opened to the opposite side of the fixing notch 34. A concave rotating body surface 51 is formed, and the operating shaft body 45 is engaged with an engaging body 53 having the other small convex rotating body surface 52 that is rotatably fitted to the small concave rotating body surface 51. ing.

  That is, as shown in FIG. 3, the operating shaft body 45 is provided with a locking convex portion 54 between the screw portion 46 and the operating portion 48, and the locking convex portion 54 has a spherical surface on the screw portion 46 side. The engaging body 53 having a rotating body surface 52 having a shape is locked, and the engaging body 53 of the operating shaft body 45 is a concave rotating body surface 51 of the fastening portion 36 provided at the other circumferential end of the tilt rotating body 31. So that the one end in the circumferential direction and the other end in the circumferential direction of the tilt rotating body 31 are clamped in the direction of compressing the fixing notch 34 by the fixing operation by the rotation of the operating shaft body 45. Is provided.

  As shown in FIGS. 1 and 2, the through hole 37 has an inner diameter slightly larger than that of the shaft portion 43b so that the shaft portion 43b of the fixed body 44 is loosely fitted. The inner diameter of the operation shaft body 45 is slightly larger than the shaft diameter of the operation shaft body 45 so that the operation shaft body 45 is loosely fitted, so that when the operation shaft body 45 tightens the fastening portions 35 and 36, The operation of deforming while compressing the fixing notch 34 of the tilt rotating body 31 is freely performed.

  In the fixed body 44, a horizontal support shaft portion 55 intersecting with the pan rotating body 21 is integrally provided by being fixed by a plurality of fixing screws 56. A support body (side tilt support base, etc.) 57 for detachably attaching and supporting an optical device (not shown) such as a telescope and a surveying instrument is rotatably fitted, and vertically extending around the support shaft portion 55. It is possible to adjust the rotation.

  As shown in FIG. 3, the support body 57 is integrally formed of, for example, a synthetic resin and is fitted to the outer peripheral side of the support shaft portion 55 of the fixed body 44 so as to be rotatable in the vertical direction. A substantially cylindrical fitting tube portion 58 is provided, and a substantially rectangular plate-shaped support base portion 59 is integrally provided on the upper portion of the fitting tube portion 58.

  A screw hole 61 is provided on one lower side of the fitting cylinder portion 32 of the support 57, and a side tilt lock turning lever 62 inserted into the screw hole 61 from the other lower side of the fitting cylinder portion 32. A screw 63 provided at the tip of the rotating lever 62 is screwed together, and a stepped shaft 65 is provided between the rotary lever 62 and the operating portion 64 provided on the opposite side. A locking ring 66 engaged with the portion 65 is engaged with the lower other side surface 67 of the fitting tube portion 58.

  The fitting cylinder portion 58 of the support body 57 can be deformed by the tightening force of the rotating lever 62 and fixed to the support shaft portion 55 of the fixed body 44. The support shaft portion 55 of the fixed body 44 is provided with a long hole 68 corresponding to the movable range of the rotation lever 62 when the support body 57 is rotated by releasing the tightening force of the rotation lever 62. It has been.

  As shown in FIG. 5, an optical device mounting base provided with a screw 72 for directly fixing the optical device (not shown) on the support base portion 59 of the support body 57 via an interposition mechanism portion 71. 73 is provided.

  Next, the operation of the above embodiment will be described.

  When adjusting the orientation of an optical device such as a camera attached to the support body 57 of the pan head 11, by operating the operation shaft body 45, the pan rotation body 21 is horizontally oriented around the vertical shaft portion 13 of the base body 12. The tilt rotating body 31 is rotated up and down around the horizontal shaft portion 22 of the pan rotating body 21.

  Then, after adjusting the orientation of the optical device, when the tilt rotating body 31 and the pan rotating body 21 are fixed, the operation shaft body 45 is rotated in one direction (for example, clockwise).

  At this time, as shown in FIGS. 1 to 2, when the operation shaft body 45 is rotated by a predetermined amount in one direction, the tilt rotating body 31 and the pan rotating body 21 are elasticized based on the tightening force by this operation. As a result, the width dimension of the fixing notch 34 of the tilt rotating body 31 and the width dimension of the fixing notch 23 of the pan rotating body 21 are reduced, respectively. As a result, the tilt rotating body 31 and the pan rotating body 21 are respectively reduced. It is fixed almost simultaneously. That is, the pan rotating body 21 is fixed by crimping to the vertical shaft portion 13 of the base body 12, and the tilt rotating body 31 is fixed by crimping to the pan rotating body 21.

  At that time, the threaded portion 46 of the operating shaft body 45 is not directly screwed to the fastening portion 35 at one end in the circumferential direction of the tilt rotating body 31, and is a concave shape formed in the fastening portion 35 of the tilt rotating body 31. The tilt rotating body 31 is fastened by a fixing operation by the rotation of the operating shaft body 45 because the rotating body surface 42 is screwed to the fixed body 44 having a convex rotating body surface 43 that is rotatably fitted to the rotating body surface 42. Even when the fastening portion 35 of the tilt rotating body 31 changes in angle due to deformation of the tilt rotating body 31 when the fixing notch 34 is compressed between the portions 35 and 36, the tilt rotating body 31 The angle change is absorbed by the relative rotational motion between the concave rotating body surface 42 of the tilt rotating body 31 and the convex rotating body surface 43 of the fixed body 44, and the fixed body 44 changes in angle during the fixing operation. The optical device supported by the support body 57 provided on the fixed body 44 via the support shaft portion 55 is capable of changing the angle. It does not do, and it moves only slightly.

  Further, the concave rotating body surface 42 formed in the fastening portion 35 at one end in the circumferential direction of the tilt rotating body 31 is formed into a circular arc surface 42a having a concave longitudinal section, and a non-rotating form having a concave transverse section. The rotating body surface 43 of the fixed body 44 is formed into a convex arcuate surface 43a that fits the concave arcuate surface 42a and has a transverse cross section. Since it is formed in a convex non-rotating shape that fits with the concave non-rotating shape, the structure of fitting the uneven non-rotating shape in the cross section between the tilt rotating body 31 and the fixed body 44 Even if a separate anti-rotation means is not provided therebetween, there is no possibility that the fixed body 44 rotates around the axis of the operation shaft body 45.

  Even when the angle between the operation shaft body 45 and the fastening portion 36 at the other circumferential end of the tilt rotating body 31 is changed during the fixing operation of the tilt rotating body 31, the angle change is It is absorbed by the relative rotational movement between the small concave rotating body surface 51 and the small convex rotating body surface 52 provided on the engaging body 53 of the operating shaft body 45, and the angle of the fixed body 44 changes during the fixing operation. This is prevented more reliably, and the tightening force of the operating shaft body 45 acts on the tilt rotating body 31 evenly around the axis of the operating shaft body 45 through these uneven rotating body surfaces 51 and 52, thereby tightening. There is no bias in force.

  On the other hand, as shown in FIGS. 2 to 1, the width of the fixing notch 34 of the tilt rotating body 31 is obtained by rotating one operating shaft 45 by a predetermined amount in the other direction (for example, counterclockwise). The dimensions and the width of the fixing notch 23 of the pan rotating body 21 are restored to the original dimensions, and the tilt rotating body 31 is fixed to the pan rotating body 21 and the pan rotating body 21 is fixed to the vertical shaft portion 13 of the base body 12. Fixing is released almost simultaneously.

  Next, effects of the above embodiment will be described.

  A concave rotating body surface 42 is formed on the fastening portion 35 located at one end in the circumferential direction of the tilt rotating body 31 provided on the pan rotating body 21, and the convex rotation of the fixed body 44 is formed on the concave rotating body surface 42. The body surface 43 is rotatably fitted, and the operation shaft body 45 inserted from the other circumferential end of the tilt rotating body 31 through the fixing cutout 34 is screwed to the fixed body 44 and is tilted. The fastening portion 36 located at the other circumferential end of the moving body 31 is engaged with the fastening portion 36 via the engaging body 53 so as to be rotatable. Since the other end in the circumferential direction is clamped in the direction in which the fixing notch 34 is compressed, the one end in the circumferential direction of the tilt rotating body 31 changes in angle due to the deformation of the tilt rotating body 31 that occurs when the operating shaft body 45 is fixed. However, the angle change of the tilt rotating body 31 is fixed to the concave rotating body surface 42 of the tilt rotating body 31. It is absorbed by the relative rotational motion between the body 44 and the convex rotating body surface 43, and the angle of the body 44 to be fixed during the fixing operation can be prevented, and the support body 57 provided on the body 44 is supported. It is possible to prevent the angle of the optical device to be supported from changing, and to suppress the amount of blurring of the field of view captured by the optical device to a slight amount of parallel movement.

  The concave rotating body surface 42 formed at one end in the circumferential direction of the tilt rotating body 31 has a circular arc surface 42a having a concave section along the operating direction of the operating shaft body 45, and the convex rotation of the fixed body 44. The body surface 43 has a convex arcuate surface 43a that fits the concave arcuate surface 42a in a cross section along the operation direction of the operation shaft body 45, and therefore has a structure in which the uneven arcuate surfaces 42a and 43a are fitted. In addition to the effect of absorbing the angle changes of the rotating body surfaces 42 and 43, the concave rotating body surface 42 has a concave cross section in a direction orthogonal to the operating shaft body 45 and rotates around the axis of the operating shaft body 45. The convex rotating body surface 43 of the fixed body 44 has a non-rotating non-rotating aspherical shape, and the convex cross section in a direction orthogonal to the operation shaft body 45 is fitted with the concave aspherical shape. Since it has an aspherical shape, it is separated between the tilt rotating body 31 and the fixed body 44 by a structure in which the uneven aspherical shape is fitted. Without providing a detent means can be easily and reliably prevented the risk that the fixed element 44 is rotated around the axis of the operating shaft 45.

  The other concave rotating body surface 51 is formed in the fastening portion 36 at the other circumferential end of the tilt rotating body 31, and the other concave rotating body surface 51 of the engaging body 53 engaged with the operation shaft body 45 is formed. Since the other convex rotating body surface 52 is rotatably fitted, the angle between the operation shaft body 45 and the other circumferential end of the tilt rotating body 31 is fixed when the tilt rotating body 31 is fixed. Even if it changes, the change in angle can be absorbed by the relative rotational movement between the other concave rotating body surface 51 and the convex rotating body surface 52 of the engaging body 53, and the fixed body 44 changes in angle during the fixing operation. This can be prevented more reliably, and the tightening force of the operating shaft body 45 acts on the tilt rotating body 31 evenly around the axis via the other concavo-convex rotating body surfaces 51 and 52, and the tightening force is not biased. Therefore, the rotation operation of the operation shaft body 45 is not hard, and the operation shaft body 45 can be operated smoothly.

  Next, the fixing device 74 including the cylindrical rotating body 31, the fixed body 44, and the operation shaft body 45 can be used in addition to the pan head 11, and the fixed body 44 is angled during the fixing operation. You may apply to the positioning device etc. of the machine tool which should prevent changing.

  Also in this case, the convex rotating body surface 43 as the other rotating body surface of the fixed body 44 can freely rotate on the concave rotating body surface 42 as one rotating body surface formed at one circumferential end of the rotating body 31. The operation shaft body 45 inserted through the fixing cutout 34 from the other circumferential end of the rotating body 31 is screwed into the fixed body 44 and is connected to the other circumferential end of the rotating body 31. The operation shaft 45 is engaged so as to be freely rotatable, and the one end in the circumferential direction and the other end in the circumferential direction of the rotation body 31 are clamped in the direction of compressing the fixing notch 34 by the fixing operation by the rotation of the operation shaft body 45. Even if one end in the circumferential direction of the rotating body 31 changes due to deformation of the rotating body 31 that occurs during the fixing operation of the body 45, the angle change of the rotating body 31 is caused by the concave rotating body surface 42 of the rotating body 31 and the fixed body. Absorbed by the relative rotational movement between the convex rotating body surface 43 of 44 and prevents the fixed body 44 from changing its angle during the fixing operation. It can be.

  In the above embodiment, the concave rotating body surface 42 is illustrated as one rotating body surface of the tilt rotating body 31, and the convex rotating body surface 43 is illustrated as the other rotating body surface of the fixed body 44. The unevenness of may be reversed. That is, an embodiment in which the rotating body surface 42 of the tilt rotating body 31 is formed in a convex shape and the rotating body surface 43 of the fixed body 44 is formed in a concave shape may be employed.

  The present invention can be used by those who manufacture and sell fixing devices and pan heads as business.

11 pan head
12 Base body
21 Pan rotating body
31 Tilt rotating body as rotating body
34 Notch for fixing
42 Concave rotor surface as one rotor surface
43 Convex rotor surface as the other rotor surface
44 Fixed object
45 Operation shaft
51 Concave surface of the other concave
52 The other convex rotating surface
53 Engagement body
57 Support

Claims (4)

A fixing device for fixing an object to be attached which is an optical device,
A cylindrical rotating body in which a fixing notch is formed between one circumferential end and the other circumferential end, and one rotating body surface is formed on one circumferential end,
A fixed body having the other rotating body surface rotatably fitted to the one rotating body surface of the rotating body;
Inserted from the other circumferential end of the rotating body through the fixing notch, screwed into the fixed body, and rotatably engaged with the other circumferential end of the rotating body, and fixed by rotation. An operation shaft body that clamps the circumferential one end and the other circumferential end of the rotating body in a direction to compress the fixing notch, by operation ;
A fixing device comprising: a support body provided on the fixed body for supporting an object to be attached which is an optical device. A base body,
A pan rotating body that is provided in the base body and rotates in a horizontal direction around a vertical axis;
Centered on a horizontal axis, which is provided on the pan rotating body and has a notch for fixing between one end in the circumferential direction and the other end in the circumferential direction, and one rotating body surface formed at one end in the circumferential direction A cylindrical tilt rotating body that rotates in the vertical direction as
A fixed body having the other rotating body surface rotatably fitted to the one rotating body surface of the tilt rotating body;
Inserted from the other circumferential end of the tilt rotating body through the fixing notch, screwed into the fixed body, and rotatably engaged with the other circumferential end of the tilt rotating body. An operation shaft body that clamps the one end in the circumferential direction and the other end in the circumferential direction in the direction of compressing the fixing notch by the fixing operation by
A pan head comprising: a support provided on the fixed body for supporting an attachment. The one rotating body surface formed at one end in the circumferential direction of the tilt rotating body has a cross section that is concave and arcuate along the operation direction of the operation shaft body, and is orthogonal to the operation shaft body. The cross section in the direction to be concave and has an aspherical shape formed into a non-rotating shape that disables rotation about the axis of the operating shaft body,
The rotating body surface of the fixed body is formed in a convex arc shape in which a section along the operation direction of the operation shaft body is fitted with the concave arc shape, and is orthogonal to the operation shaft body. The pan head according to claim 2, wherein a cross section in a direction has an aspherical shape formed into a convex non-rotating shape that fits into the concave non-rotating shape. The other concave rotating body surface is formed at the other circumferential end of the tilt rotating body,
The engaging body having the other convex rotating body surface that is rotatably fitted to the other concave rotating body surface is engaged with the operation shaft body. Pan head.

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