JP2007114370A - Universal head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a universal head free from the deviation of an image plane associated with fixing operation and capable of smoothly and uniformly turning when releasing such fixing even if there are errors such as the dimensional error and the assembly error of a member. <P>SOLUTION: The universal head 1 is equipped with: a base body; a pan turning body capable of turning in a right-and-left direction with a vertical axis A as center; and a tilt turning body capable of turning in an up-and-down direction with a horizontal axis B as center. The universal head 1 is equipped with: a pan turning body fixing means 106 for fixing the pan turning body to the base body and releasing such fixing; and a tilt turning body fixing means for fixing the tilt turning body to the pan turning body and releasing such fixing. The pan turning body fixing means 106 is equipped with: a ball pin 112 forming a ball-shaped part 111; and a braking body 114. The braking body 114 has: a nearly C-shaped main body part 122 press-fit and fixed on the tilt turning body by deformation by the contraction of a diameter; and a holding part 123 projecting from the non-deformed part of the main body part 122 and holding the ball-shaped part 111. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  Even if there are errors such as dimensional errors and assembly errors of the members, the present invention is free from defects such as screen misalignment (so-called tightening) associated with the fixing operation and obtains a smooth and uniform rotation when releasing the fixing. It is related to the pan head that can

Conventionally, for example, a base body that is screwed to a screw shaft portion at the upper end of a tripod, a pan rotating body that is provided on the base body so as to be rotatable in the left-right direction around a vertical axis, and a horizontal axis that is provided on the pan rotating body. A tilt rotating body provided so as to be pivotable in the vertical direction as a center, a pan rotating body fixing means for fixing and unfixing the pan rotating body with respect to the base body, and a tilt rotating body fixed to the pan rotating body and A pan head provided with a tilt rotating body fixing means for releasing the lock is known (for example, see Patent Document 1).
Japanese Patent Publication No. 2-35196

  However, in the conventional pan head, when there is an error such as a dimensional error of a member or an assembly error, there is a possibility that smooth and uniform rotation cannot be obtained at the time of unlocking due to the influence of the error.

  The present invention has been made in view of the above points, and even when there are errors such as dimensional errors and assembly errors of members, there are no problems such as screen misalignment due to the fixing operation, and the fixing and releasing operation is smooth and uniform. An object of the present invention is to provide a pan head that can obtain various rotations.

  The pan head according to claim 1 is a base body, a pan rotating body provided on the base body so as to be pivotable in a left-right direction around a vertical axis, and the pan rotating body is fixed to the base body. A pan rotating body fixing means for releasing the fixing, wherein the pan rotating body fixing means includes a projecting body provided in a projecting shape on one of the base body and the pan rotating body, and the base by reducing the diameter. A brake body having a substantially C-shaped main body that is crimped and fixed to either the body or the pan rotating body, and a sandwiching portion that projects outward from an undeformed portion of the main body and sandwiches the projecting body. The brake body is adapted to move with respect to the protrusion according to an error.

  The pan head according to claim 2 is the pan head according to claim 1, wherein the projecting body has a ball-shaped portion sandwiched by the sandwiching portion of the brake body, and the brake body is centered on the ball-shaped portion. And can be moved in all directions and movable in the vertical direction and the front-rear direction with respect to the ball-shaped portion.

  According to a third aspect of the present invention, there is provided a pan head, a pan rotating body provided on the base body so as to be pivotable in a left-right direction about a vertical axis, and a vertical axis about the horizontal axis. And a tilt rotating body fixing means for fixing and unfixing the tilt rotating body with respect to the pan rotating body, the tilt rotating body fixing means comprising: A projecting body provided in a projecting shape on one of the moving body and the tilt rotating body, and a substantially C-shaped main body portion fixed to the other of the pan rotating body and the tilt rotating body by a diameter reduction deformation. And a brake body having a clamping portion that projects outward from the non-deformable portion of the main body portion and clamps the projection body, and the brake body moves relative to the projection body in accordance with an error. It is those who are.

  The pan head according to claim 4 is the pan head according to claim 3, wherein the projecting body has a ball-shaped portion sandwiched by the sandwiching portion of the brake body, and the brake body is centered on the ball-shaped portion. And can be moved in the vertical direction and the horizontal direction with respect to the ball-shaped portion.

  According to the invention according to claim 1, since the brake body moves relative to the projecting body in accordance with errors such as the dimensional error of the member and the assembly error, even when there are errors such as the dimensional error of the member and the assembly error, Smooth and uniform rotation can be obtained at the time of unlocking, and because the clamping part of the brake body protrudes from the non-deformed part of the substantially C-shaped main body, problems such as screen misalignment due to the fixing operation Can be prevented.

  According to the invention of claim 2, the projecting body has a ball-shaped portion that is clamped by the clamping portion of the brake body, the brake body is rotatable in all directions around the ball-shaped portion, and the ball-shaped portion. However, since it can move in the vertical direction and the front-rear direction, errors such as dimensional errors and assembly errors of the members can be appropriately absorbed.

  According to the invention of claim 3, since the brake body moves relative to the projecting body in accordance with errors such as the dimensional error of the member and the assembly error, even when there are errors such as the dimensional error of the member and the assembly error, Smooth and uniform rotation can be obtained at the time of unlocking, and because the clamping part of the brake body protrudes from the non-deformed part of the substantially C-shaped main body, problems such as screen misalignment due to the fixing operation Can be prevented.

  According to the invention which concerns on Claim 4, a protrusion has a ball-shaped part clamped in the clamping part of a brake body, and a brake body can rotate to all directions centering on a ball-shaped part, and a ball-shaped part However, since it can move in the vertical direction and the horizontal direction, errors such as dimensional errors and assembly errors of members can be appropriately absorbed.

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

  1 to 7, reference numeral 1 denotes a pan head. The pan head 1 is an oil pan head made of metal such as aluminum which is used by being attached to an upper end portion of a tripod (not shown).

  The camera platform 1 is provided with a base body 2 that is detachably screwed to a screw shaft portion (not shown) at the upper end of the tripod, and is provided on the base body 2 so as to be rotatable in the left-right direction around the vertical axis A. The pan rotating body 3, the tilt rotating body 4 provided on the pan rotating body 3 so as to be rotatable in the vertical direction about the horizontal axis B, and an attachment object such as a camera provided on the tilt rotating body 4 (not shown). And a support base 5 to be detachably attached.

  The base body 2 has a substantially disc-shaped substrate portion 11 centering on the vertical axis A, and a screw hole portion 12 screwed into a screw shaft portion of a tripod is formed at the center of the substrate portion 11. It is formed so as to penetrate the upper and lower surfaces. From the vicinity of the outer peripheral edge of the substrate portion 11, a substantially cylindrical cylindrical portion 13 centering on the vertical axis A protrudes upward, and the upper end of the cylindrical portion 13 has a substantially frustoconical shape whose diameter decreases upward. A truncated cone portion 14 is provided. The outer peripheral surface of the truncated cone portion 14 is reduced in diameter upward to form a tapered outer sliding surface 15 with the vertical axis A as the center, and the inner peripheral surface of the truncated cone portion 14 is reduced upward. A taper-shaped in-taper sliding surface 16 having a diameter and centering on the vertical axis A is formed. The outer sliding surface 15 and the inner sliding surface 16 form a base-side sliding surface 17. Further, a substantially cylindrical brake pressure bonding surface 18 is formed on the outer peripheral surface of the cylindrical portion 13.

  For example, as shown in FIG. 8, the base body 2 includes a disk member 21, a cylindrical member 23 fixed to the disk member 21 with four screws 22, and a screw hole at the center of the disk member 21. The screw member 25 is screwed to 24 and the like.

  The pan rotating body 3 has a substantially cylindrical fitting tube portion 31 fitted to the outer peripheral side of the cylindrical portion 13 and the truncated cone portion 14 of the base body 2 so as to be rotatable about the vertical axis A. . On the inner peripheral surface of the fitting cylinder portion 31, a tapered inner sliding surface 32 having a diameter decreasing upward and centering on the vertical axis A is formed. This inner sliding surface 32 is a taper of the base body 2. The outer sliding surface 15 is slidably contacted.

  The pan rotating body 3 has a protruding portion 33 that protrudes downward from the upper portion of the fitting cylinder portion 31 and is located in the cylindrical portion 13 and the truncated cone portion 14 of the base body 2. The projecting portion 33 includes a shaft portion 34 whose center axis in the vertical direction coincides with the vertical axis A, and an annular flange portion 35 provided at the lower end of the shaft portion 34. At the center of the shaft portion 34, a screw hole portion 36 is formed in which the vertical center axis coincides with the vertical axis A and opens downward. A plurality of, for example, six pin insertion holes 37 are formed in the flange portion 35 at equal intervals in the circumferential direction.

  A cylindrical movable portion 41 is fitted on the outer peripheral surface side of the shaft portion 34 of the protruding portion 33 so as to be movable in the vertical direction along the outer peripheral surface of the shaft portion 34. On the outer peripheral surface of the movable portion 41, a tapered outer sliding surface 42 whose diameter is reduced upward and centering on the vertical axis A is formed. This outer sliding surface 42 slides within the taper of the base body 2. The surface 16 is slidably contacted. The inner sliding surface 32 of the fitting tube portion 31 and the outer sliding surface 42 of the movable portion 41 constitute a first pan side sliding surface 43 that slidably contacts the base side sliding surface 17. ing. A plurality of, for example, six pin insertion recesses 44 are formed on the lower surface of the movable portion 41.

  Further, the pan rotating body 3 has a substantially cylindrical holding portion 45 provided at the upper portion of the fitting cylinder portion 31 and holding the tilt rotating body 4 so as to be rotatable about the horizontal axis B. On the inner peripheral surface of the holding portion 45, a tapered inner sliding surface 46 having a diameter reduced toward the side (for example, rightward when viewed from the front) and centering on the horizontal axis B is formed. A cylindrical bearing surface 47 centering on the horizontal axis B is formed on the inner peripheral surface of the holding portion 45. On one end face of the holding portion 45, a sliding surface 48 is formed which has an annular shape centering on the horizontal axis B and faces away from the inner sliding surface 46. A second pan-side sliding surface 49 is constituted by the inner sliding surface 46 formed on one side of the holding portion 45 and the sliding surface 48 formed on the other side of the holding portion 45.

  For example, as shown in FIGS. 8 and 9, the pan rotating body 3 includes a main body member 51, a flanged shaft member 52 screwed to the main body member 51, and an outer peripheral side of the flanged shaft member 52 in the vertical direction. A cylindrical member 53 that is movably fitted, cover portion forming members 55 and 56 that are fixed to the main body member 51 with screws 54, a disk-like plate member 57 that is attached to and detached from the cover portion forming member 55, and the like It is composed of. The cover part 58 formed by the cover part forming members 55 and 56 closes the opening part 59 that opens toward the side of the holding part 45. A hole 60 is formed in the center of the cover forming member 55.

  The tilt rotating body 4 has a shaft portion 61 that is rotatably held around the horizontal axis B on the bearing surface 47 of the holding portion 45 of the pan rotating body 3. A flange portion 62 is provided at one end of the shaft portion 61, and a plurality of, for example, six pin insertion hole portions 63 are formed in the flange portion 62 at equal intervals in the circumferential direction. On one end side of the shaft portion 61, there is formed a screw hole portion 64 in which the horizontal center axis coincides with the horizontal axis B and opens toward the side.

  A cylindrical movable portion 65 is fitted on the outer peripheral surface side near one end of the shaft portion 61 so as to be movable in the horizontal direction along the outer peripheral surface of the shaft portion 61. On the outer peripheral surface of the movable portion 65, a tapered outer sliding surface 66 having a tapered diameter and centering on the horizontal axis B is formed on the outer peripheral surface. The inner sliding surface 46 is slidably contacted. Further, the movable portion 65 has a substantially cylindrical cylindrical portion 67 centering on the horizontal axis B, and a substantially cylindrical brake pressing surface 68 is formed on the outer peripheral surface of the cylindrical portion 67. In addition, a plurality of, for example, six pin insertion recesses 69 are formed in the movable portion 65.

  A screw shaft portion 71 is provided at the other end of the shaft portion 61, and a main body portion 72 is screwed to the screw shaft portion 71. The main body 72 has an annular sliding surface 73 that is slidably in contact with the annular sliding surface 48 of the holding portion 45 of the pan rotating body 3 around the horizontal axis B. A tilt-side sliding surface 74 that is slidably in contact with the second pan-side sliding surface 49 is constituted by the sliding surface 66 outside the taper of the movable portion 65 and the sliding surface 73 of the main body 72.

  Furthermore, a handle attachment hole 75 is formed in the main body 72, and an operation handle 76 is detachably attached to the handle attachment hole 75. The operation handle 76 can be fixed to and released from the handle mounting hole 75 by rotating the handle fixing lever 77. Further, a base mounting recess 78 is formed on the upper surface of the main body 72, and a support base 5 having a screw shaft portion 100 for mounting a camera or the like to the base mounting recess 78 is attached to be movable in the front-rear direction. The support base 5 can be fixed to and released from the base mounting recess 78 by rotating the support base fixing knob 79. Note that by changing the mounting position of the operation handle 76 with respect to the handle mounting hole 75, it is possible to handle both right-handed and left-handed users.

  As shown in FIGS. 5 and 9, for example, the tilt rotating body 4 includes a main body member 81, a flanged shaft member 82 that is screwed to the main body member 81, and an outer peripheral side of the flanged shaft member 82 in the horizontal direction. It is composed of a cylindrical member 83 or the like that is movably fitted.

  On the other hand, the pan head 1 has first sliding resistance adjusting means 86 for adjusting the sliding resistance between the base side sliding surface 17 of the base body 2 and the first pan side sliding surface 43 of the pan rotating body 3. And a second sliding resistance adjusting means 87 for adjusting the sliding resistance between the second pan side sliding surface 49 of the pan rotating body 3 and the tilt side sliding surface 74 of the tilt rotating body 4. .

  The first sliding resistance adjusting means 86 is disposed in a state where the vertical rotation center axis coincides with the vertical axis A, and slides between the base side sliding surface 17 and the first pan side sliding surface 43. A first adjusting screw 91 is provided which is rotated from a lower part of the pan head 1 with a tool (not shown) such as a hexagon wrench when the resistance is adjusted.

  The first adjusting screw 91 is inserted into the hole 93 of the disc member 92 and screwed into the screw hole 36 of the pan rotating body 3. A plurality of, for example, six pin insertion recesses 94 are formed in the disk member 92. The lower end portions of a plurality of, for example, six pin members 95 inserted into the pin insertion hole portion 37 of the pan rotating body 3 are inserted into the pin insertion recess portions 94 of the disk member 92, and the upper end portion of the pin member 95 is movable. The pin 41 is inserted into the pin insertion recess 44.

  Then, with the pan head 1 removed from the tripod, the tool is inserted into the screw hole 12 of the base body 2 from the lower part of the pan head 1, and the first adjusting screw 91 is rotated in the tightening direction with the inserted tool. When the moving operation is performed, the movable portion 41 is lifted with respect to the shaft portion 34 of the projecting portion 33 in a form pushed by the pin member 95, and the first pan-side sliding with respect to the base-side sliding surface 17 is caused by the rising of the movable portion 41. The pressure contact force of the surface 43 increases, and the sliding resistance between the base side sliding surface 17 and the first pan side sliding surface 43 increases.

  Conversely, with the pan head 1 removed from the tripod, the tool is inserted into the screw hole portion 12 of the base body 2 from the lower part of the pan head 1, and the first adjusting screw 91 is loosened with the inserted tool ( When the pivoting operation is performed in the tightening release direction), the movable portion 41 descends with respect to the shaft portion 34 of the projecting portion 33, and the lowering of the movable portion 41 causes the first pan-side sliding surface 43 to move relative to the base-side sliding surface 17. The pressure contact force decreases, and the sliding resistance between the base side sliding surface 17 and the first pan side sliding surface 43 decreases. The first sliding resistance adjusting means 86 is constituted by the first adjusting screw 91, the disk member 92, the pin member 95, and the like.

  The second sliding resistance adjusting means 87 is arranged in a state where the rotation center axis coincides with the horizontal axis B, and adjusts the sliding resistance between the second pan side sliding surface 49 and the tilt side sliding surface 74. In this case, a second adjusting screw 101 is rotated from a left or right side part of the pan head 1, for example, a left part when viewed from the front, with a tool (not shown) such as a hexagon wrench. .

  The second adjusting screw 101 is inserted into the hole 103 of the disc member 102 and screwed into the screw hole 64 of the tilt rotating body 4. A plurality of, for example, six pin insertion recesses 104 are formed in the disk member 102. One end of a plurality of, for example, six pin members 105 inserted through the pin insertion hole 63 of the tilt rotating body 4 is inserted into the pin insertion recess 104 of the disc member 102, and the other end of the pin member 105 is inserted. The movable portion 65 is inserted into the pin insertion recess 69.

  Then, with the plate member 57 removed from the cover part forming member 55, the tool is inserted into the hole 60 of the cover part forming member 55 from the side of the pan head, for example, the left part when viewed from the front. When the second adjustment screw 101 is rotated in the tightening direction, the movable portion 65 is horizontally moved in one direction with respect to the shaft portion 61 while being pushed by the pin member 105. The pressure contact force of the tilt side sliding surface 74 with respect to the pan side sliding surface 49 increases, and the sliding resistance between the second pan side sliding surface 49 and the tilt side sliding surface 74 increases.

  Conversely, with the plate member 57 removed from the cover forming member 55, the tool is inserted into the hole 60 of the cover forming member 55 from the left side of the pan head when viewed from the front, and the second adjustment is performed with the inserted tool. When the screw 101 is rotated in the loosening direction (tightening release direction), the movable portion 65 moves horizontally with respect to the shaft portion 61 in the other direction, and the movement of the movable portion 65 causes the second pan side sliding surface 49 to move. The pressure contact force of the tilt side sliding surface 74 is reduced, and the sliding resistance between the second pan side sliding surface 49 and the tilt side sliding surface 74 is reduced. Note that the second sliding resistance adjusting means 87 is constituted by the second adjusting screw 101, the disk member 102, the pin member 105, and the like. Further, oil is applied between the sliding surfaces 17, 43, 49, and 74 that are in contact with each other.

  The pan head 1 includes a pan rotating body fixing means 106 for fixing and unfixing the pan rotating body 3 with respect to the base body 2, and a tilt rotation for fixing and unfixing the tilt rotating body 4 with respect to the pan rotating body 3. The moving body fixing means 107 is provided.

  As shown in FIGS. 6 and 8, the pan rotating body fixing means 106 includes a vertical ball pin 112 which is a projecting body provided in a projecting shape on the pan rotating body 3 and having a ball-shaped portion 111, and an operating body. It has an elastically deformable brake body 114 that is elastically reduced in diameter by a rotation operation of a certain pan fixing lever body 113 and is crimped and fixed to the brake crimping surface 18 of the base body 2.

  The ball pin 112 includes a shaft portion 116 in which a ball-shaped portion 111 is formed at an intermediate position in the axial direction, and a screw shaft portion 118 in which a thread groove 117 is formed on the outer peripheral surface. The screw shaft 118 of the ball pin 112 is screwed into a pin screw hole (not shown) of the pan rotating body 3.

  The brake body 114 includes a substantially C-shaped main body portion 122 formed with a notch 121 and elastically contracted and deformed to the brake pressure-bonding surface 18 of the base body 2, and a non-deformed portion (reduced portion of the main body portion 122). A pinching part 123 projecting from the left and right to project the ball-shaped part 111 from the left and right, and projecting from the main body part 122 to the front outer side, And a lever mounting portion 124 which is a protruding portion to be mounted.

  The sandwiching portion 123 is a pair of substantially rectangular plate portions 125 that protrude rearward from a rear portion (non-deformable portion) on the opposite side to the portion where the notch portion 121 of the main body portion 122 is formed and are opposed to each other. It is composed of. A ball-shaped portion 111 of the ball pin 112 is inserted between the both plate portions 125. The lever mounting portion 124 is constituted by a pair of substantially rectangular tubular portions 126 that protrude forward from the front portion where the notch 121 of the main body portion 122 is formed and are opposed to each other. One cylindrical portion 126 is formed with a penetrating screw hole 127, and the other cylindrical portion 126 is formed with a shaft insertion hole 128.

  The pan fixing lever body 113 includes a shaft member 131 and a lever member 133 fixed to the shaft member 131 with a screw 132. The lever portion 134 and a first shaft portion 135 protruding from the lever portion 134 are provided. And a second shaft portion 136 that is smaller in diameter than the first shaft portion 135 and protrudes from the tip of the first shaft portion 135. The second shaft portion 136 includes a screw shaft portion 137 screwed into the screw hole portion 127 of one cylindrical portion 126, and a shaft portion 138 inserted into the shaft insertion hole portion 128 of the other cylindrical portion 126. It is composed of.

  Then, when the pan fixing lever body 113 is rotated in the tightening direction, the main body 122 of the brake body 114 is elastically deformed and contracted by the two cylindrical portions 126 moving closer to each other. The pan rotating body 3 is fixed to the base body 2 by being crimped to the crimping surface 18. Conversely, when the pan fixing lever body 113 is rotated in the loosening direction (tightening release direction), the inner peripheral surface of the main body 122 of the brake body 114 and the brake are braked based on the elastic restoring force of the main body 122 of the brake body 114. The crimping fixing with the crimping surface 18 is released, and the fixing of the pan rotating body 3 to the base body 2 is released.

  Here, as shown in FIGS. 10 to 14, the brake body 114 of the pan rotating body fixing means 106 has the ball pin 112 in accordance with the error so as to absorb errors such as dimensional error and assembly error of each member. The ball-shaped portion 111 can rotate in all directions around the ball-shaped portion 111 and can move in the vertical direction and the front-rear direction with respect to the ball-shaped portion 111. As shown in FIG. 15, the brake body 114 is not rotatable about the vertical axis A.

  As shown in FIGS. 7 and 9, the tilt rotating body fixing means 107 is a protruding body having a ball-like portion 141 provided in a protruding shape on the pan rotating body 3, similar to the pan rotating body fixing means 106. The ball pin 142 and the elastically deformable brake body 144 that is elastically reduced in diameter by the rotation operation of the tilt fixing lever body 143 and is crimped and fixed to the brake pressing surface 68 of the tilt rotating body 4. ing.

  The ball pin 142 includes a shaft portion 146 in which a ball-shaped portion 141 is formed at an intermediate position in the axial direction, and a screw shaft portion 148 in which a screw groove 147 is formed on the outer peripheral surface. The screw shaft portion 148 of the ball pin 142 is screwed into the pin screw hole 150 of the pan rotating body 3.

  The brake body 144 includes a substantially C-shaped main body 152 formed with a notch 151 and elastically contracted and deformed to the brake pressure-bonding surface 68 of the tilt rotating body 4, and a non-deformed portion of the main body 152 ( A pinching portion 153 that protrudes upward and outward from a portion that hardly deforms when the diameter is reduced), and a protrusion 154 that protrudes downward and outward from the main body 152. Have.

  The sandwiching portion 153 is formed on a pair of substantially rectangular plate portions 155 that protrude upward from an upper portion (non-deformed portion) opposite to the portion where the notch portion 151 of the main body portion 152 is formed and are opposed to each other. Configured. A ball-shaped portion 141 of the ball pin 142 is inserted between the both plate portions 155. Further, the projecting portion 154 includes a pair of projecting portions 156 that project downward from the lower portion of the main body 152 where the notch 151 is formed and are positioned to face each other. A concave portion 157 is formed on the surface of one projecting portion 156 opposite to the surface facing the other projecting portion 156, and the surface facing the one projecting portion 156 is opposite to the other projecting portion 156. A curved cam receiving surface 158 is formed on the side surface.

  The protruding portion 154 of the brake body 144 is inserted between the left and right plate portions 162 of the floating member 161, and the leading end side of the adjustment screw 164 screwed into the screw hole portion 163 of the floating member 161 is the concave shape of one protruding portion 156. The size of the notch 151 of the brake body 144, that is, the size of the gap between the projecting portions 156 can be adjusted by turning the adjusting screw 164. A cam member 166 having a cam surface 165 is rotatably disposed between the left and right plate portions 162 of the floating member 161, and the cam surface 165 of the cam member 166 is connected to the cam receiving surface 158 of the protruding portion 156. Abuts slidably.

  The tilt fixing lever body 143 includes a shaft member 171 and a lever member 173 fixed to the shaft member 171 with a screw 172. The lever portion 174 and a shaft portion 175 protruding from the lever portion 174 are provided. And have. The shaft portion 175 is inserted into the hole portion 56a of the cover portion forming member 56, the hole portion 161a of the floating member 161, and the hole portion 166a of the cam member 166, and a washer 176 and a retaining member 177 are provided at the distal end portion of the shaft portion 175. It is attached.

  When the tilt fixing lever body 143 is rotated in the tightening direction, the cam member 166 rotates and the cam surface 165 pushes the cam receiving surface 158, so that the main body 152 of the brake body 144 is elastically reduced in diameter. The tilt rotating body 4 is fixed to the pan rotating body 3 by being deformed and fixed to the brake pressing surface 68 of the tilt rotating body 4. On the contrary, when the tilt fixing lever body 143 is rotated in the loosening direction (tightening release direction), the inner peripheral surface of the main body 152 of the brake body 144 and the brake based on the elastic restoring force of the main body 152 of the brake body 144 The crimping fixing with the pressing surface 68 is released, and the fixing of the tilt rotating body 4 to the pan rotating body 3 is released.

  Although not shown in the drawing, the brake body 144 of the tilt rotating body fixing means 107 is error-free so as to absorb errors such as dimensional errors and assembly errors of each member, like the brake body 114 of the pan rotating body fixing means 106. Accordingly, the ball-shaped portion 141 of the ball pin 142 can rotate in all directions around the ball-shaped portion 141 and can move in the vertical and horizontal directions with respect to the ball-shaped portion 141. The brake body 144 is not rotatable about the vertical axis A.

  Next, the operation and the like of the one embodiment will be described.

  For example, when adjusting the sliding resistance between the base side sliding surface 17 of the base body 2 and the first pan side sliding surface 43 of the pan rotating body 3 in the final process at the time of manufacturing the pan head 1, After removing 1 from the tripod, the tool is inserted into the screw hole 12 of the base body 2 from the lower part of the pan head 1, and the first adjusting screw 91 is rotated in the tightening direction with the inserted tool. Then, the movable portion 41 rises with respect to the shaft portion 34, and the pressure of the first pan side sliding surface 43 against the base side sliding surface 17 increases due to the raising of the movable portion 41, and the base side sliding surface 17. And the first pan-side sliding surface 43 increase in sliding resistance. On the other hand, when the first adjustment screw 91 is turned in the loosening direction, the movable portion 41 is lowered with respect to the shaft portion 34 of the projecting portion 33, and the lower portion of the movable portion 41 causes the first side relative to the base side sliding surface 17. The pressure contact force of the first pan side sliding surface 43 decreases, and the sliding resistance between the base side sliding surface 17 and the first pan side sliding surface 43 decreases.

  Further, for example, in the final process when the pan head 1 is manufactured, the sliding resistance between the second pan side sliding surface 49 of the pan rotating body 3 and the tilt side sliding surface 74 of the tilt rotating body 4 is adjusted. Then, after removing the plate member 57 from the cover part forming member 55, the tool is inserted into the hole 60 of the cover part forming member 55 from either the left or right side of the pan head, for example, the left part when viewed from the front. The second adjusting screw 101 is rotated in the tightening direction with a tool. Then, the movable portion 65 moves horizontally in one direction with respect to the shaft portion 61. Due to the movement of the movable portion 65, the pressure contact force of the tilt side sliding surface 74 with respect to the second pan side sliding surface 49 increases. The sliding resistance between the pan side sliding surface 49 and the tilt side sliding surface 74 is increased. Conversely, when the second adjustment screw 101 is rotated in the loosening direction, the movable portion 65 moves horizontally in the other direction with respect to the shaft portion 61, and the second pan side sliding surface 49 is moved by the movement of the movable portion 65. Accordingly, the pressure contact force of the tilt side sliding surface 74 is reduced, and the sliding resistance between the second pan side sliding surface 49 and the tilt side sliding surface 74 is reduced.

  On the other hand, when the pan rotating body 3 is fixed with respect to the base body 2 at the time of camera shooting, the brake body 114 is elastically deformed to a reduced diameter by rotating the pan fixing lever body 113 in the tightening direction. The base body 2 is fixed by crimping to the brake crimping surface 18. When the tilt rotating body 4 is fixed to the pan rotating body 3, the tilt fixing lever body 143 is rotated in the tightening direction, so that the brake body 144 is elastically reduced in diameter and tilted. Crimp and fix to the brake crimping surface 68 of the rotating body 4.

  Then, according to the pan head 1, the base side sliding surface 17 of the base body 2 and the first pan of the pan rotating body 3 are operated by rotating the first adjusting screw 91 of the first sliding resistance adjusting means 86. The sliding resistance between the side sliding surface 43 and the second sliding side sliding surface of the pan rotating body 3 can be adjusted by rotating the second adjusting screw 101 of the second sliding resistance adjusting means 87. Since the sliding resistance between 49 and the tilt side sliding surface 74 of the tilt rotating body 4 can be adjusted, the sliding resistance of the pan rotating body 3 with respect to the base body 2 is reduced in the final process when the pan head 1 is manufactured. The sliding resistance of the tilt rotating body 4 with respect to the pan rotating body 3 can be easily adjusted.

  Further, unlike the conventional configuration, the wedge body is not used, so that it can be easily manufactured with a metal material such as aluminum, and the configuration can be simplified, and the height of the pan head 1 is small. it can.

  Furthermore, since each sliding surface 17, 43, 49, 74 is formed by a taper surface or a disk surface (plane), the sliding resistance in the initial operation can be reduced compared to the case where it is formed by a cylindrical surface, Good operability.

  Further, the brake body 114 of the pan rotating body fixing means 106 can rotate in all directions around the ball-shaped portion 111 within a predetermined range, and can move in the vertical direction and the front-back direction with respect to the ball-shaped portion 111. That is, the brake body 114 is suspended from the ball-shaped portion 111, and the brake body 114 moves relative to the ball-shaped portion 111 of the ball pin (projection body) 112 in accordance with errors such as dimensional errors and assembly errors. Thus, even if there are errors such as dimensional errors and assembly errors of the members constituting the pan head 1, the errors can be appropriately absorbed, and the pan rotating body 3 can be smoothly moved relative to the base body 2 when the fixing is released. A uniform rotation can be obtained.

  Further, the brake body 144 of the tilt rotating body fixing means 107 can rotate in all directions around the ball-shaped portion 141 within a predetermined range, and can move in the vertical and horizontal directions with respect to the ball-shaped portion 141. In other words, the brake body 144 is suspended from the ball-shaped portion 141, and the brake body 144 moves relative to the ball-shaped portion 141 of the ball pin (projecting body) 142 in accordance with errors such as dimensional errors and assembly errors. Thus, even if there are errors such as dimensional errors and assembly errors of the members constituting the pan head 1, the errors can be appropriately absorbed, and the tilt rotating body 4 of the pan rotating body 3 with respect to the pan rotating body 3 is released when the fixing is released. Smooth and uniform rotation can be obtained.

  Further, since the sandwiching portions 123, 153 of the brake bodies 114, 144 protrude from the non-deformed portions of the substantially C-shaped main body portions 122, 152, the pan rotating body fixing means 106 and the tilt rotating body fixing means 107 are fixed. It is possible to prevent problems (so-called tightening) such as screen displacement of the subject.

  That is, as shown in FIG. 16A, the holding portion 123 of the brake body 114 of the pan rotating body fixing means 106 has a substantially C-shape that undergoes a diameter reduction deformation during the fixing operation by the rotation operation of the pan fixing lever body 113. Since the main body 122 protrudes from a non-deformable portion that hardly deforms, the support base 5 that supports the camera or the like does not move in accordance with the fixing operation, and it is possible to prevent problems such as screen displacement of the subject. . Although not shown in the drawings, the same applies to the brake body 144 of the tilt rotating body fixing means 107, and the holding portion 153 of the substantially C-shaped main body portion 152 that undergoes a diameter reduction deformation during the fixing operation by the rotation operation of the tilt fixing lever body 143. Since the projection is provided at a non-deformed portion that hardly deforms, the support base 5 that supports the camera or the like does not move in accordance with the fixing operation, and it is possible to prevent problems such as screen displacement of the subject. In the case of a fixing means comprising a substantially C-shaped brake body 181 and a fixing lever body 182 as shown in FIG. 16 (b), the support base 5 moves in accordance with the fixing operation and the screen is shifted. A malfunction occurs.

  In the above-described embodiment, a ball pin (projection body) 142 provided in a projecting manner on the pan rotation body 3, a substantially C-shaped main body 152 that is crimped and fixed to the tilt rotation body 4 by a reduced diameter deformation, and Although the configuration including the brake body 144 having the clamping portion 153 protruding from the non-deformed portion of the main body 152 has been described, the tilt rotating body fixing means 107 protrudes from the tilt rotating body 4 as shown in FIG. A ball pin (projection body) 142 provided in a shape, a substantially C-shaped main body portion 152 that is crimped and fixed to the brake pressure-bonding surface 3a of the pan rotating body 3 by a reduced diameter deformation, and an undeformed portion of the main body portion 152. And a brake body 144 having a clamping portion 153 that projects outward and clamps the ball-shaped portion 141 of the ball pin 142, and the brake body 144 moves relative to the ball-shaped portion 141 of the ball pin 142 according to an error. Even in the configuration There.

  Further, although not shown, for example, a projecting body such as a ball pin in which the pan rotating body fixing means is provided in a projecting manner on the base body, a substantially C-shaped main body portion that is crimped and fixed to the pan rotating body by a reduced diameter deformation, and A brake body having a holding part that protrudes outward from the non-deformable part of the main body part and holds the protruding body, and the brake body moves with respect to the protruding body in accordance with an error. Good.

  Furthermore, in the above-described embodiment, the ball pin 112 that is a projecting body has the ball-shaped portion 111 that is clamped by the clamping portion 123 of the brake body 114, and the brake body 114 is entirely centered on the ball-shaped portion 111. The structure that can rotate in the direction and can move in the vertical direction and the front-rear direction with respect to the ball-shaped portion 111 has been described. For example, as shown in FIGS. The protrusion 112a is formed of a cylindrical pin, the brake body 114 is movable in the vertical direction and the front-rear direction with respect to the cylindrical protrusion 112a, and the brake body 114 is vertical in the vertical direction with respect to the protrusion 112a. And the structure which can be rotated in a horizontal direction may be sufficient.

  Although not shown in the drawings, the projecting body of the tilt rotating body fixing means 107 is formed by a cylindrical pin, the brake body is movable in the vertical and horizontal directions with respect to the cylindrical projecting body, and the brake body is The structure which can be rotated to an up-down direction and a horizontal direction with respect to a protrusion may be sufficient.

  Further, although not shown, the ball-shaped portions 111 and 141 of the ball pins 112 and 142 are not limited to a true spherical shape, and may be an oval shape.

It is a front view which shows one Embodiment of the pan head of this invention. It is a left view of the same platform. It is a right view of the same platform. It is a rear view of the same platform. It is a back view longitudinal cross-sectional view of a head same as the above. It is a cross-sectional view of the same platform. It is a side view longitudinal cross-sectional view of a head same as the above. It is a disassembled perspective view of a pan head same as the above. It is a disassembled perspective view of a pan head same as the above. It is operation | movement explanatory drawing of the brake body of a pan head same as the above. It is operation | movement explanatory drawing of the brake body of a pan head same as the above. It is operation | movement explanatory drawing of the brake body of a pan head same as the above. It is operation | movement explanatory drawing of the brake body of a pan head same as the above. It is operation | movement explanatory drawing of the brake body of a pan head same as the above. It is operation | movement explanatory drawing of the brake body of a pan head same as the above. (A) is explanatory drawing which shows the deformation | transformation amount of a brake body same as the above, (b) is explanatory drawing which shows the deformation | transformation amount of the brake body which a screen shift produces. It is a schematic perspective view which shows other embodiment of this invention. It is operation | movement explanatory drawing of the brake body of further another embodiment of this invention. It is operation | movement explanatory drawing of the brake body of a pan head same as the above. It is operation | movement explanatory drawing of the brake body of a pan head same as the above. It is operation | movement explanatory drawing of the brake body of a pan head same as the above. It is operation | movement explanatory drawing of the brake body 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
106 Pan rotating body fixing means
107 Tilt rotating body fixing means
111 Ball-shaped part
112 Projection ball pin
112a Projection
114 Brake body
122 Body
123 Clamping part
141 Ball-shaped part
142 Ball pins as protrusions
144 Brake body
152 Body
153 Nipping part

Claims (4)

A base body,
A pan rotating body provided on the base body so as to be rotatable in the left-right direction around a vertical axis;
A pan rotating body fixing means for fixing and unfixing the pan rotating body with respect to the base body;
The pan rotating body fixing means is
A projecting body provided in a projecting shape on one of the base body and the pan rotating body;
A substantially C-shaped main body that is crimped and fixed to one of the base body and the pan rotating body by a diameter-reducing deformation, and a sandwich that projects outward from an undeformed portion of the main body and sandwiches the projecting body A brake body having a portion,
The pan head, wherein the brake body is adapted to move relative to the projecting body according to an error. The projecting body has a ball-like portion that is sandwiched by the sandwiching portion of the brake body,
The said brake body can be rotated to all directions centering | focusing on the said ball-shaped part, and can move to the up-down direction and the front-back direction with respect to the said ball-shaped part. Pan head. A base body,
A pan rotating body provided on the base body so as to be rotatable in the left-right direction around a vertical axis;
A tilt rotating body provided on the pan rotating body so as to be rotatable in the vertical direction about the horizontal axis;
A tilt rotating body fixing means for fixing and unfixing the tilt rotating body with respect to the pan rotating body;
The tilt rotating body fixing means is
A projecting body provided in a projecting shape on one of the pan rotating body and the tilt rotating body;
A substantially C-shaped main body that is crimped and fixed to one of the pan rotating body and the tilt rotating body by the diameter reduction deformation, and protrudes outward from an undeformed portion of the main body to sandwich the protruding body. A brake body having a clamping part,
The pan head, wherein the brake body is adapted to move relative to the projecting body according to an error. The projecting body has a ball-like portion that is sandwiched by the sandwiching portion of the brake body,
The said brake body can be rotated to all directions centering | focusing on the said ball-shaped part, and can move to the up-down direction and the left-right direction with respect to the said ball-shaped part. Pan head.

Images