JP4545170B2 - Pan head - Google Patents

Description

  The present invention relates to a pan head that can prevent not only rattling between a pan rotating body and a tilt rotating body but also rattling between a base body and a pan rotating body.

  2. Description of the Related Art Conventionally, as a pan head that supports an attachment such as a video camera or a telescope, for example, a pan head described in Patent Document 1 below is known.

  This conventional pan head includes a base body that is detachably attached to an upper end portion of a leg device such as a tripod, a pan rotating body that is provided on the base body and that rotates in the left-right direction around a vertical axis, and a pan rotating body. The tilt rotating body that is provided on the horizontal axis and rotates in the vertical direction around the horizontal axis, the pan fixing operation means that fixes the pan rotating body to the base body, and the tilt fixing that fixes the tilt rotating body to the pan rotating body Operating means.

The base body has a frustoconical upward receiving surface whose diameter is reduced upward about the vertical axis, and the pan rotating body has a frustoconical shape corresponding to the upward receiving surface. A downward contact surface that slidably contacts the surface. Further, the pan rotating body has a frustoconical one-side receiving surface that expands toward one of the horizontal axes around the horizontal axis, and a diameter that expands toward the other of the horizontal axes around the horizontal axis. A frustoconical other side receiving surface, and the tilt rotating body has a frustoconical shape corresponding to the one side receiving surface and slidably contacts with the one side receiving surface; It has a frustoconical shape corresponding to the side receiving surface, and has the other side contact surface slidably contacting the other side receiving surface.
Japanese Patent Publication No. 2-35196

  However, like the conventional pan head, the downward contact surface of the frustoconical shape of the pan rotating body is slidably mounted on the upward receiving surface of the frustoconical shape of the base body. In the configuration in which the base body is placed on the base body, rattling may occur between the base body and the pan rotating body.

  The present invention has been made in view of such a point, and can prevent not only the rattling between the pan rotating body and the tilt rotating body but also the rattling between the base body and the pan rotating body. The purpose is to provide a stand.

  The pan head according to claim 1 is provided with a base body, a pan rotating body that is provided on the base body and that rotates in the left-right direction about a vertical axis, and a pan rotating body that is provided on the pan rotating body and is vertically moved about a horizontal axis. A tilt rotating body that rotates in a direction, a pan fixing operation means that fixes the pan rotating body to the base body, and a tilt fixing operation means that fixes the tilt rotating body to the pan rotating body. The base body has a frustoconical upward receiving surface whose diameter is reduced upward about the vertical axis, and a downwardly frustoconical shape whose diameter is reduced downward about the vertical axis. The pan rotating body has a frustoconical shape corresponding to the upward receiving surface, a downward contact surface slidably in contact with the upward receiving surface, and the downward receiving surface An upward contact surface that is slidably in contact with the downwardly receiving surface of the corresponding truncated cone A frustoconical one-side receiving surface that expands toward one of the horizontal axes around the horizontal axis, and a frustoconical shape that expands toward the other of the horizontal axes around the horizontal axis The tilt rotating body has a frustoconical shape corresponding to the one side receiving surface, and is in contact with the one side receiving surface so as to be slidable, and the other side receiving surface. It has a frustoconical shape corresponding to the surface and has the other side contact surface slidably contacting the other side receiving surface.

  The pan head according to claim 2 is the pan head according to claim 1, wherein the base body has a pan shaft portion that rotatably supports the pan rotating body about the vertical axis, and the pan rotating body is The pan fixing operation means has a through-hole portion and a horizontal through-hole portion communicating with the upper and lower through-hole portions. The pan fixing operation means has a shaft portion insertion hole portion formed in the middle in the axial direction and a female screw portion formed on the inner peripheral surface. A cylindrical body, and an operating body having a male threaded portion that is screwed into the female threaded portion. The tubular body is inserted into the horizontal through-hole portion of the pan rotating body, and the base body The pan shaft portion is inserted into the shaft portion insertion hole of the cylindrical body and the upper and lower through-hole portions of the pan rotating body, and when the operating body is rotated, the pan shaft portion is moved to the operating body. And the cylindrical body at a desired clamping pressure, and the pan rotating body is fixed to the base body. Is shall.

  A pan head according to claim 3 is the pan head according to claim 1 or 2, wherein the pan head is formed in a shape that forms a part of a spherical surface, and an upper cover body that closes an upper surface opening of a base body, and a part of the spherical surface. A front cover body that is formed into a shape that closes the front opening of the pan rotation body, and a rear cover body that is formed into a shape that forms part of the spherical surface and closes the rear opening of the pan rotation body. is there.

  According to the first aspect of the present invention, the base body has a frustoconical upward receiving surface and a frustoconical downward receiving surface, and the pan rotating body is slidable with the upward receiving surface. A tilt rotating body having a downward contact surface in contact, an upward contact surface slidably in contact with a downward receiving surface, a frustoconical one side receiving surface, and a frustoconical other side receiving surface Is configured to have a one-side contact surface that slidably contacts the one-side receiving surface and a second-side contact surface that slidably contacts the other-side receiving surface. Not only rattling but also rattling between the base body and the pan rotating body can be prevented.

  According to the second aspect of the present invention, the pan shaft portion of the base body can be clamped between the operating body and the cylindrical body with a desired clamping pressure by rotating the operating body of the pan fixing operation means. The rotating body can be appropriately fixed to the base body.

  According to the invention of claim 3, since the upper cover body, the front cover body, and the rear cover body each formed in a shape that forms a part of a spherical surface are provided, not only the appearance is good but also the strength is excellent. ing.

  An embodiment of the pan / tilt head of the present invention will be described with reference to the drawings.

  1 to 9, reference numeral 1 denotes a pan head. The pan head 1 is attached to an upper end of a tripod (not shown) which is a leg device, for example, and is attached to an attached object (such as a video camera, a telescope, or a field scope). It is an oil-fluid head that supports (not shown). In addition, the direction of the arrow shown in FIG.

  The camera platform 1 includes a base body 2 that is detachably attached to an upper end portion of a tripod (not shown), and a pan rotation that is provided in the base body 2 and rotates in the left-right direction about a vertical axis Y in the vertical direction. A moving body 3 and a tilt rotating body that is provided on the pan rotating body 3 and that rotates in the vertical direction around the horizontal axis X in the left-right direction and is attached to the upper surface portion so that the attached object can be attached and detached are provided. The pan head 1 includes a pan fixing operation means 6 for fixing the pan rotating body 3 to the base body 2, and a tilt fixing operating means 7 for fixing the tilt rotating body 4 to the pan rotating body 3. Yes.

  Here, the base body 2 has a pair of upper and lower receiving members each having a substantially conical shape, that is, a lower receiving member 11 and an upper receiving member 12. A screw hole 13 that opens downward is formed in the lower receiving member 11, and a screw portion at the upper end of the tripod is screwed into the screw hole 13. On the upper surface of the lower receiving member 11, an upward receiving surface 14 having a frustoconical shape whose diameter decreases upward with the vertical axis Y as the center is formed. On the lower surface of the upper receiving member 12, a downward receiving surface 15 having a frustoconical shape whose diameter is reduced downward about the vertical axis Y is formed. Further, a pan shaft member 18 constituting a vertical pan shaft portion 17 that supports the pan rotating body 3 so as to be rotatable about the vertical axis Y projects from the lower member 11 upward. The pan shaft member 18 is inserted into the shaft insertion hole 20 of the upper receiving member 12 so that the upper receiving member 12 cannot rotate with respect to the pan shaft member 18. A male screw portion 21 is formed on the upper outer peripheral surface of the pan shaft member 18. Then, when the nut member 22 is screwed onto the male screw portion 21, the pan rotating body 3 is sandwiched between the upper receiving member 12 and the lower receiving member 11 from above and below. That is, the pan rotating body 3 is supported by the upper receiving surface 14 of the lower receiving member 11 and the lower receiving surface 15 of the upper receiving member 12 so as to be rotatable about the vertical axis Y, that is, the pan shaft portion.

  Further, as shown in FIG. 9 and the like, the circular upper surface opening 23 of the upper receiving member 12 of the base body 2 is closed by the upper cover body 24. The upper cover body 24 is formed in a shape that forms a part of a spherical surface, and is screwed to the upper end portion of the pan shaft member 18. The upper cover body 24 has a curved surface portion 25 that forms a part of a spherical surface, a cylindrical portion 26 projects from the curved surface portion 25, and an internal thread portion 27 is formed on the inner peripheral surface of the cylindrical portion 26. The male screw portion 21 of the pan shaft member 18 is screwed to the female screw portion 27. A plurality of, for example, four concave portions 28 are formed in the curved surface portion 25.

  The pan rotating body 3 is formed by combining four substantially conical conical members 31. The pan rotating body 3 has a truncated conical shape corresponding to the upper receiving surface 14 of the lower receiving member 11 of the base body 2 and has a downward contact surface 34 slidably in contact with the upper receiving surface 14. An upper contact surface 35 is formed on the lower surface and corresponds to the downward receiving surface 15 of the upper receiving member 12 of the base body 2 and contacts the downward receiving surface 15 so as to be slidable in a surface shape. Have. In other words, the receiving member 11 of the base body 2 is fitted to the lower part of the pan rotating body 3, and the receiving member 12 of the base body 2 is fitted to the upper part of the pan rotating body 3. Further, the pan rotating body 3 has a horizontal axis X as a center, and one side of the horizontal axis X, that is, a right side surface having a right-side one-side receiving surface 36 with a frustoconical shape expanding toward the right, for example. And having the other side of the horizontal axis X centered on the horizontal axis X, that is, for example, a frustoconical and left-side receiving surface 37 that expands in the left direction on the left side that is the other side. Yes.

  Further, the pan rotating body 3 has a vertical through hole 38 and a horizontal through hole 39 communicating with the vertical through hole 38 in the center. A pan shaft member 18 that is a pan shaft portion 17 of the base body 2 is inserted into the upper and lower through holes 38, and the tilt rotating body 4 is supported by the horizontal through holes 39 so as to be rotatable about the horizontal axis X. A tilt shaft member 41 constituting the tilt shaft portion 40 is inserted. The tilt shaft member 41 has a substantially cylindrical shape with openings on both end surfaces having an axial direction in the left-right direction, and has a shaft insertion hole 42 at the middle in the axial direction, that is, for example, at the center in the axial direction. The pan shaft member 18 is inserted through the through hole 42. In addition, the tilt shaft member 41 has a flat contact surface 43 at the axial center, and the tilt shaft is brought into contact with the contact surface 44 of the contact surface 43 and the contacted surface 44 of the inner surface of the center of the pan rotating body 3. The rotation of the member 41 with respect to the pan rotating body 2 is restricted. Further, a first female screw portion 45 is formed on the inner peripheral surface of one end side of the tilt shaft member 41, and a second female screw portion 46 is formed on the inner peripheral surface of the other end side of the tilt shaft member 41. A male screw portion 49 of a screw member 48 is screwed into the first female screw portion 45, and a head portion 50 of the screw member 48 is in contact with a contacted surface 52 on the outer surface of the tilt rotating body 4 via a washer 51. . A male screw portion 56 of a tilt fixing knob 55 which is an operating body of the tilt fixing operation means 7 is screwed into the second female screw portion 46, and a contact surface 57 of the tilt fixing knob 55 is tilted via a washer 59. It is in contact with the contacted surface 58 of the outer surface of the rotating body 4.

  Further, as shown in FIG. 9 and the like, the pan rotating body 3 has the front opening 61 closed by the front cover body 62 and the rear opening 63 closed by the rear cover body 64. Both the front cover body 62 and the rear cover body 64 are formed in a shape that forms part of a spherical surface, and are fixed to the cover attached portions 65 and 66 of the pan rotating body 3 with screws 67 and 68. Each cover body 62, 64 has curved surface portions 69, 70 forming a part of a spherical surface, and cylindrical portions 71, 72 project from the curved surface portions 69, 70 and are inserted into the cylindrical portions 71, 72. The male screws 67 and 68 are screwed into the cover mounting portions 65 and 66. As is clear from FIG. 9, the curved surface portion 69 of the front cover body 62, the curved surface portion 70 of the rear cover body 64, and the curved surface portion 25 of the upper cover body 24 are one centered on the center of the pan rotating body 3. Located on a spherical surface.

  The tilt rotating body 4 has a pair of left and right conical members each having a substantially conical shape, that is, a right conical member 76 and a left conical member 77. The right conical member 76 is formed with a frustoconical shape corresponding to the one side receiving surface 36 of the pan rotating body 3, and one side contact surface 78 slidably contacting the one side receiving surface 36 is formed on the left side. The conical member 77 is formed with a frustoconical shape corresponding to the other side receiving surface 37 of the pan rotating body 3 and the other side contact surface 79 slidably contacting the other side receiving surface 37. The conical members 76, 77 are formed with through-hole portions 81, 82 penetrating in the left-right direction, and the right end side, which is one end side of the tilt shaft member 41, is fitted into the through-hole portion 81 of the right conical member 76, The left end side which is the other end side of the tilt shaft member 41 is fitted into the through-hole portion 82 of the left conical member 77, and the conical members 76 and 77 are supported by the tilt shaft member 41 so as to be rotatable about the horizontal axis X. Has been.

  Further, the tilt rotating body 4 has a quick shoe type attachment support member 83 to which an attachment (not shown) is detachably attached to the upper surface portion. The attached object support member 83 is attached to both the cone members 76 and 77, and the attached object support member 83 rotates together with the both cone members 76 and 77. That is, the attached object support member 83 has a key groove portion 84, and the key portions 85 of the conical members 76 and 77 are fitted into the key groove portion 84.

  Further, a through hole portion 87 is formed in the right side plate portion 86 which is one side plate portion of the attachment support member 83, and the screw member 48 is screwed from the through hole portion 87 to the first female screw portion 45 of the tilt shaft member 41. It is worn. A through-hole portion 89 is formed in the left side plate portion 88 which is the other side plate portion of the attachment supporting member 83, and the tilt fixing knob 55 is screwed into the second female screw portion 46 of the tilt shaft member 41 from the through-hole portion 89. It is worn. In addition, a pair of front and rear handle attachment portions 90 that are spaced apart from each other are projected from the right side plate portion 86 of the attachment support member 83, and a rod-like operation handle 91 is provided on the handle attachment portion 90. It is attached with. The operation handle 91 has a grip portion 93 that is gripped by an operator, and a portion of the operation handle 91 located between both handle mounting portions 90 is covered with a handle cover 94, and the handle cover 94 is covered. It is attached to the right side plate portion 86 of the attachment support member 83 and is fitted between both handle attachment portions 90. As shown in FIG. 8, the handle cover 94 has an insertion claw portion 95, and this insertion claw portion 95 is inserted into a hole 96 formed in the right side plate portion 86 and is inserted into a hole 96 in the right side plate portion 86. It is latched to the inner surface of the peripheral edge.

  A shoe holding portion 98 is formed on the upper plate portion 97 of the attachment supporting member 83, and a quick shoe 99 is held by the shoe holding portion 98. The quick shoe 99 is a rotation operation lever 100 for locking. It is locked at. The quick shoe 99 has a screw 99a at the center portion, and the screw 99a is screwed into a screw hole in the lower surface portion of the attachment object, whereby the quick shoe 99 is attached to the lower surface portion of the attachment object.

  The bread fixing operation means 6 has a substantially cylindrical tubular body 101 having both ends open and having an axial direction in the left-right direction. The cylindrical body 101 is inserted into the horizontal through hole 39 of the pan rotating body 3 while being inserted into the tilt shaft member 41. A shaft portion insertion hole 102 is formed in the middle of the cylindrical body 101 in the axial direction, that is, for example, in the central portion in the axial direction, and the pan shaft member 18 is inserted into the shaft portion insertion hole 102. A female thread portion 110 is formed on the inner peripheral surface on the left end side of the cylindrical body.

  Further, the pan fixing operation means 6 has a pan fixing knob 103 which is an operating body that is rotated around the horizontal axis X by the operator. The bread fixed knob 103 has a left and right shaft part 105 inserted through the shaft part insertion hole 104 of the tilt fixed knob 55, and a knob 106 provided at the base end of the shaft part 105. ing. A male screw portion 107 is formed on the outer peripheral surface on the front end side of the shaft portion 105, and the male screw portion 107 is screwed into the female screw portion 110 of the cylindrical body 101.

  When the operator rotates the pan fixing knob 103 in one direction, the pan shaft portion 17 of the base body 2 is inserted into the distal end surface 105a of the shaft portion 105 of the pan fixing knob 103 and the shaft portion of the cylindrical body 101. It is clamped with a desired clamping pressure from the left and right with the peripheral edge of the common hole 102, and as a result, the pan fixing knob 103 and the cylindrical body 101 are pressed against the pan shaft 17, and the pan rotating body 3 is attached to the base body 2. It is fixed against. Further, when the operator rotates the pan fixing knob 103 in the other direction, the pan shaft portion 17 is unpinned by the pan fixing knob 103 and the cylindrical body 101, and the bread rotating body 3 with respect to the base body 2 is released. Fixing is released.

  The tilt fixing operation means 7 has a tilt fixing knob 55 that is an operating body that is rotated around the horizontal axis X by the operator. The tilt fixing knob 55 has a left and right shaft portion 111 inserted into the through hole 89 of the left side plate portion 88 of the attachment supporting member 83, and a substantially circular shape provided at the base end of the shaft portion 111. And an eggplant knob 112. A male screw part 56 is formed on the outer peripheral surface on the front end side of the shaft part 111, and this male screw part 56 is screwed into the second female screw part 46 of the tilt shaft member 41. A shaft portion insertion hole 104 is formed in the shaft portion 111 along the axial direction so as to penetrate the shaft portion 111. The knob portion 112 has a knob housing portion 113 that opens toward the left side, and the knob portion 106 of the bread fixed knob body 103 is accommodated in the knob housing portion 1113.

  Then, when the operator rotates the tilt fixing knob 55 in one direction, the pan rotating body 3 is clamped by the left conical member 77 and the right conical member 76 from the left and right with a desired clamping pressure. The contact surface 78 and the other side contact surface 79 are pressure-bonded to the one side receiving surface 36 and the other side receiving surface 37, and the tilt rotating body 4 is fixed to the pan rotating body 3. When the operator rotates the tilt fixing knob 55 in the other direction, the sandwiching of the pan rotating body 3 by the left conical member 77 and the right conical member 76 is released, and the tilt rotating body 4 with respect to the pan rotating body 3 is released. Fixing is released.

  Next, the operation of the camera platform 1 will be described.

  If the operator operates the pan fixing knob 103 of the pan fixing operation means 6 to release the fixing of the pan rotating body 3 to the base body 2, the pan rotating body 3 is perpendicular to the base body 2. It can be rotated in the left-right direction around Y. Further, if the operator rotates the tilt fixing knob 55 of the tilt fixing operation means 7 to release the fixing of the tilt rotating body 4 to the pan rotating body 3, the tilt rotating body 4 becomes the pan rotating body 3. On the other hand, it can be rotated in the vertical direction around the horizontal axis X. Therefore, the operator can adjust the orientation of the attachment such as a video camera supported by the attachment support member 83 of the tilt rotating body 4 to the subject.

  According to the pan head 1, the base body 2 has two frustoconical surfaces, that is, a frustoconical upward receiving surface 14 and a frustoconical downward receiving surface 15, and a pan rotating body. 3 has four frustoconical surfaces, ie, a downward contact surface 34 slidably in contact with the upward receiving surface 14, an upward contact surface 35 slidably in contact with the downwardly receiving surface 15, and a frustoconical shape. One side receiving surface 36 and a frustoconical other side receiving surface 37, and the tilt rotating body 4 is slidably in contact with two frustoconical surfaces, that is, one side receiving surface 36. Since the surface 78 and the other-side contact surface 79 that slidably contacts the other-side receiving surface 37, the base body as well as the rattling between the pan-rotating body 3 and the tilt-rotating body 4 are provided. It is possible to prevent rattling between 2 and the pan rotating body 3, and the vertical length can be reduced as compared with the conventional pan head, and the size can be reduced.

  In addition, the pan shaft portion 17 of the base body 2 can be clamped between the pan fixing knob 103 and the cylindrical body 101 with a desired clamping pressure by rotating the pan fixing knob 103 of the pan fixing operation means 6. The pan rotating body 3 can be appropriately and reliably fixed to the base body 2.

  Further, since the upper cover body 24, the front cover body 62, and the rear cover body 64 each formed in a part of a spherical surface are provided, not only the appearance of the pan head 1 is good, but also a flat cover plate. It is superior in strength as compared with the structure closed with a.

  For example, although not shown, the attachment support member 83 that supports the attachment may be provided so as to be rotatable about a horizontal axis in the front-rear direction so as to be capable of side tilting.

It is a perspective view of the pan head which concerns on one embodiment of this invention. It is a perspective view of a pan head same as the above. It is a rear view of the same platform. It is a left view of the same platform. It is a right view of the same platform. It is a top view of a head same as the above. It is a disassembled perspective view of a pan head same as the above. It is sectional drawing of a pan head same as the above. It is sectional drawing of a pan head same as the above.

Explanation of symbols

1 pan head 2 base body 3 pan rotating body 4 tilt rotating body 6 pan fixing operation means 7 tilt fixing operation means
14 Upward receiving surface
15 Downward receiving surface
17 Pan axis
23 Top opening
24 Upper cover body
34 Downward contact surface
35 Upward contact surface
36 One side receiving surface
37 Other side receiving surface
61 Front opening
62 Front cover body
63 Rear opening
64 Rear cover body
78 One side contact surface
79 Contact surface on the other side
101 Tube
102 Shaft insertion hole
103 Bread fixed knob
107 Male thread
110 Female thread X Horizontal axis Y Vertical axis

Claims (3)

A base body,
A pan rotating body provided on the base body and rotating in a horizontal direction about a vertical axis;
A tilt rotating body that is provided on the pan rotating body and rotates up and down around the horizontal axis,
Pan fixing operation means for fixing the pan rotating body to the base body;
A tilt fixing operation means for fixing the tilt rotating body to the pan rotating body,
The base body is
A frustoconical upward receiving surface that reduces in diameter upward about the vertical axis;
A frustoconical downward receiving surface that is reduced in diameter downward about the vertical axis;
The pan rotating body is
A downward contact surface slidably in contact with the upward receiving surface in a frustoconical shape corresponding to the upward receiving surface;
An upward contact surface slidably in contact with the downwardly receiving surface in a frustoconical shape corresponding to the downwardly receiving surface;
A frustoconical one-side receiving surface that expands in diameter toward one of the horizontal axes around the horizontal axis;
Having a frustoconical other side receiving surface that expands in diameter toward the other side of the horizontal axis centering on the horizontal axis,
The tilt rotating body is
One side contact surface slidably in contact with the one side receiving surface in a frustoconical shape corresponding to the one side receiving surface;
A pan head having a frustoconical shape corresponding to the other side receiving surface and having the other side contact surface slidably contacting the other side receiving surface. The base body has a pan shaft portion that supports the pan rotating body to be rotatable about a vertical axis,
The pan rotating body has a vertical through hole and a horizontal through hole communicating with the vertical through hole,
The pan fixing operation means is an operation in which a cylindrical body in which a shaft portion insertion hole is formed in the middle in the axial direction and a female screw portion is formed on the inner peripheral surface, and a male screw portion screwed into the female screw portion is formed. Having a body,
The cylindrical body is inserted into the horizontal through hole portion of the pan rotating body,
The pan shaft portion of the base body is inserted into the shaft portion insertion hole portion of the cylindrical body and the upper and lower through hole portions of the pan rotating body,
When the operating body is rotated, the pan shaft portion is clamped between the operating body and the cylindrical body with a desired clamping pressure, and the pan rotating body is fixed to the base body. The pan head according to claim 1. An upper cover body that is formed in a shape forming a part of a spherical surface and closes an upper surface opening of the base body;
A front cover body that is formed in a shape that forms part of the spherical surface and closes the front opening of the pan rotation body;
The pan head according to claim 1, further comprising: a rear cover body that is formed in a shape that forms a part of the spherical surface, and that closes a rear surface opening of the pan rotating body.

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