JP4700121B2 - tripod - Google Patents

Description

  The present invention relates to a tripod capable of improving assemblability.

  Conventionally, for example, a tripod described in Patent Document 1 below is known.

  This conventional tripod includes a base body having a shaft holding portion, three legs having a shaft portion rotatably held by the shaft holding portion of the base body, and a supported object such as a camera standing on the base body. And a support for supporting the. The support has a ball portion at the lower end, and this ball portion is rotatably held by a ball receiving portion of the base. The base is provided with a fixing means for fixing and unfixing the ball portion of the support to the ball receiving portion. Each leg is rotatable about 180 degrees around the shaft portion with respect to the shaft holding portion of the base.

JP-T-1-501243 (FIGS. 2 and 9)

  In recent years, such tripods are required to be improved in assembling so that, for example, the burden on an assembling worker can be reduced.

  This invention is made in view of such a point, and it aims at providing the tripod which can aim at the improvement of an assembly property.

  The tripod according to claim 1 includes a base, a leg having a shaft portion rotatably held by the base, and a support that is erected on the base and supports a supported object. The base body has an upper base member having a cylindrical portion through which the support is inserted and a shaft holding portion, and a lower base member having a cylindrical portion having a thread groove formed on the inner peripheral surface and the shaft holding portion. The support includes a contact surface that contacts the upper surface of the cylindrical portion of the upper base member, and a screw groove that is screwed with the screw groove of the lower base member, By rotating with respect to the base body, the shaft portion of the leg is rotatably held by the shaft holding portion of the upper base member and the shaft holding portion of the lower base member. Is.

  The tripod described in claim 2 is the tripod described in claim 1, wherein the support has a tool insertion hole into which a tool is inserted when the support is rotated.

  A tripod according to claim 3 is the tripod according to claim 1 or 2, wherein the leg has an engaging portion and is rotatable with respect to the support. And a restricting means that is switched to a restricting state that restricts the upward rotation of the leg and an allowable state that does not engage the engaging portion and allows the upward rotation of the leg.

  A tripod according to a fourth aspect is the tripod according to any one of the first to third aspects, wherein the leg body is rotatable about 180 degrees with respect to the base portion with respect to the base.

  According to the first aspect of the present invention, the shaft portion of the leg can be appropriately held by the shaft holding portion of the upper base member and the shaft holding portion of the lower base member by rotating the support relative to the base. Therefore, it is possible to improve the assemblability.

  According to the invention which concerns on Claim 2, since a support body can be easily rotated using the tool inserted in the hole part for tool insertion of a support body, the improvement of an assembly property can be aimed at further.

  According to the third aspect of the present invention, the restricting means can be easily switched between the restricted state and the allowed state by the rotation of the restricting means relative to the support, and the operability is good.

  According to the invention which concerns on Claim 4, since a leg can be rotated about 180 degree | times centering on an axial part with respect to a base | substrate, it can be made into a compact state at the time of non-use, such as carrying.

It is a perspective sectional view of the important section of a tripod concerning one embodiment of the present invention. It is side view sectional drawing of the principal part of a tripod same as the above. It is a principal part perspective view of a tripod same as the above. It is a disassembled perspective view of a tripod same as the above. (A) is an upper perspective view of the upper base member of the tripod, and (b) is a lower perspective view of the regulating means. It is a side view sectional drawing of the tripod same as the above and the pan head supported by this tripod. It is a perspective view of a pan head same as the above. It is a rear view of the camera platform. It is a side view of a head same as the above. It is side view sectional drawing of a pan head same as the above. It is a fragmentary sectional view of the locked state of the to-be-attached thing support body of a head same as the above. It is a fragmentary sectional view of the unlocking state of the to-be-attached thing support body of a pan head same as the above. It is a perspective view of the state (closed leg state) which made the leg of a tripod same as the above into the perpendicular state. It is a rear view of the state which made the leg of the tripod same as the above into the perpendicular state. It is a side view of the state which made the leg of the tripod same as the above into the perpendicular state. It is a side view of the state which made the leg of the tripod same as the above into the perpendicular state. It is a perspective view of the state (closed leg state) which made the leg of the tripod same as the above in the perpendicular state. It is a perspective view of the state (normally legged state) which made the leg of the tripod same as the above inclined downward. It is a perspective view of the state (semi-low angle open leg state) which made the leg of the tripod same as the above inclined downward. It is a perspective view of the state (low angle open leg state) which made the leg of the tripod same as the above in the downward inclined state. It is a perspective view of the state which made the leg of a tripod the same as the maximum length state. It is a perspective view of the state which made the leg and support body of a tripod the same as the maximum length state. It is a figure for showing the modification of a positioning means, Comprising: (a) is an upper perspective view of an upper side base member, (b) is a lower perspective view of a control means.

  An embodiment of a tripod of the present invention will be described with reference to the drawings.

  In the figure, 1 is a pan head, and this pan head 1 is used by being attached to a tripod 2 which is a leg device. That is, the pan head 1 as a supported object is supported by the tripod 2, and an attached object (not shown) such as a camera or a video camera is attached to the pan head 1.

  As shown in FIGS. 7 to 13 and the like, the camera platform 1 includes a camera platform body 3 that is detachably attached to a tripod 2 and a longitudinal pan that protrudes obliquely downward from the camera platform body 3. A first operating body 6 such as a handle; and a second operating body 7 such as a longitudinal side tilt lock knob that protrudes rearwardly from the pan head body 3 and is positioned directly above the first operating body 6. It has.

  The length of the projecting length of the first operating body 6 from the camera platform body 3 is longer than the length of the projecting length of the second operating body 7 from the camera platform body 3. The second operating body 7 is operated by an operator by picking it with a finger.

  The camera platform body 3 includes a base body 11 that is detachably attached to the tripod 2, a pan rotating body 12 that is provided on the base body 11 so as to be pivotable in the left-right direction around the pivot center axis A in the vertical direction, A tilt rotating body 13 is provided on the pan rotating body 12 so as to be pivotable in the vertical direction about the pivot center axis B in the left-right direction, and the tilt pivot body 13 in the vertical direction about the pivot center axis C in the front-rear direction. And an attached object support 14 that is attached to a support surface 14a, which is an upper surface, so as to be detachable.

  The base body 11 has a substantially cylindrical support shaft portion 16 in the vertical direction that is detachably attached to the upper end portion of the tripod 2. A large diameter portion 17 larger in diameter than the support shaft portion 16 is integrally provided at the lower end portion of the support shaft portion 16. A concave groove 18 is formed in the vicinity of the upper end of the outer peripheral surface of the support shaft portion 16 over the entire circumference along the circumferential direction of the support shaft portion 16, and an elastic member 19 for retaining is fitted in the recess groove 18. Has been. A thread groove 20 is formed on the inner peripheral surface of the support shaft portion 16.

  The pan rotating body 12 is a substantially cylindrical fitting tube in the left-right direction, which is provided on the outer peripheral side of the support shaft portion 16 of the base body 11 so as to be turnable in the left-right direction around the rotation center axis A. Part 21. A fixing notch 22 is formed in the fitting cylinder part 21 along the axial direction of the fitting cylinder part 21. Both end surfaces in the left-right direction of the fitting tube portion 21 are covered with a substantially disc-shaped cover member 23.

  The tilt rotating body 13 is a substantially cylindrical fitting in the left-right direction provided by being fitted to the outer peripheral side of the fitting cylinder portion 21 of the pan rotating body 12 so as to be rotatable in the vertical direction around the rotation center axis B. A joint tube portion 26 is provided. The fitting tube portion 26 is formed with a fixing cutout portion 27 along the axial direction of the fitting tube portion 26. An opening 28 having a substantially C-shape in side view is formed in the lower portion of the fitting cylinder portion 26, and the support shaft portion 16 of the base body 11 is inserted through the opening 28.

  Further, on the upper rear side of the fitting cylinder portion 26, a substantially cylindrical operating body attached portion 30 in which a fixing notch portion 29 communicating with the fixing notch portion 27 is formed integrally projects. The front end side, which is one end side of the first operating body 6, is rotatably attached to the inner peripheral side of the operating body attached portion 30, and the rear end side, which is the other end side of the first operating body 6, is operated by the operator. The grip portion 32 is an operation portion to be operated.

  The first operating body 6 has a longitudinal shape having a longitudinal direction in an inclination direction D inclined at an angle α with respect to the rotation center axis C in a side view, and the inclination direction D and the rotation center axis C are formed. The angle α is, for example, 30 degrees to 50 degrees (preferably approximately 40 degrees) (see FIG. 10). The first operating body 6 is rotatable with respect to the operating body attached portion 30 of the tilt rotating body 13 around the tilt direction D.

  The first operating body 6 has a round shaft-like rod-shaped portion 31 which is a longitudinal portion having a substantially circular cross section, and the front end portion of the rod-shaped portion 31 is rotatable to the inner peripheral side of the operating body attached portion 30. It is mated. That is, for example, the screw groove 33 formed on the outer peripheral surface of the front end portion of the rod-shaped portion 31 is screwed with the screw groove 34 formed on the inner peripheral surface of the operating body attached portion 30. On the outer peripheral side of the rear end portion of the rod-shaped portion 31, a substantially columnar grip portion 32 that is gripped and operated by an operator is fixed.

  When the operator grips the grip portion 32 and rotates the first operating body 6 in one direction (tightening direction) with respect to the operating body attached portion 30 of the tilt rotating body 13, the elasticity of the tilt rotating body 13 is reached. Based on the deformation, the width dimensions of the fixing notches 27 and 29 are reduced, and the tilt rotating body 13 is fixed by crimping to the outer peripheral surface of the fitting cylinder portion 21 of the pan rotating body 12. Based on the elastic deformation, the width dimension of the fixing notch 22 is reduced, and the pan rotating body 12 is crimped and fixed to the outer peripheral surface of the support shaft portion 16 of the base body 11.

  Further, when the first operating body 6 is rotated in the other direction (tightening release direction) with respect to the operating body attached portion 30 of the tilt rotating body 13, the fitting cylinder portion of the pan rotating body 12 of the tilt rotating body 13 is provided. The crimping fixing to 21 is released, and the crimping fixing to the support shaft portion 16 of the base body 11 of the pan rotating body 12 is released. At the time of releasing the fixing, the operator rotates the tilt rotating body 13 and the pan rotating body 12 by operating the first operating body 6, thereby attaching the camera or the like on the attachment support 14. It is possible to change the direction of the object.

  As is clear from FIG. 8, the outer diameter dimension (width dimension) of the grip portion 32 of the first operating body 6 and the left-right direction length dimension (width dimension) of the tilt rotating body 13 are substantially the same.

  Furthermore, a substantially cylindrical support shaft portion 41 in the front-rear direction is integrally projected on the upper side of the front end portion of the operating body attachment portion 30. A front end side which is one end side of the second operation body 7 is rotatably attached to the inner peripheral side of the support shaft portion 41, and a rear end side which is the other end side of the second operation body 7 is operated by an operator. It is a knob portion 70 that is an operation portion.

  The support shaft portion 41 includes a substantially cylindrical shaft main body 42 that supports the attachment support 14 so as to be rotatable about the rotation central axis C, and a plurality of thin plate-like members are formed from the front end portion of the shaft main body 42. For example, four elastically deformable plates 43 that are elastically deformable deformable portions project integrally toward the front. Each elastic deformation plate 43 has a substantially arcuate plate shape centered on the rotation center axis C, and between the elastic deformation plates 43 adjacent to each other in the circumferential direction of the support shaft portion 41, along the axial direction of the support shaft portion 41. There is a longitudinal gap 44. On the inner surface of the front end portion of each elastic deformation plate 43, an inclined surface 43a is formed that gradually goes outward as it goes from the rear end side to the front end side. Near the front end portion of the outer peripheral surface of the shaft main body 42, a guide groove 45 is provided for guiding the guided portion 46 of the attachment support 14 when the attachment support 14 rotates relative to the support shaft 41. It is formed over only the upper half circumference along the circumferential direction of the shaft portion 41.

  The second operating body 7 has a longitudinal shape having a longitudinal direction in the direction along the rotation center axis C. The second operating body 7 supports the tilt rotating body 13 around the rotation center axis C. It can rotate with respect to the shaft portion 41. The first operating body 6 and the second operating body 7 are provided so as to project rearward from the tilt rotating body 13 and are aligned in the vertical direction at the center in the left-right direction of the tilt rotating body 13 in the rear view. Further, the axis of the first operating body 6 and the axis of the second operating body 7 coincide with each other in plan view.

  The second operating body 7 has a round shaft-like rod-like portion 50 that is a longitudinal portion having a substantially circular cross section, and this rod-like portion 50 is inserted on the inner peripheral side of the support shaft portion 41. The rod-shaped portion 50 includes a first rod portion 51 that is a front end portion, a second rod portion 52 that is larger in diameter than the first rod portion 51, a third rod portion 53 that is larger in diameter than the second rod portion 52, and The fourth rod portion 54 is a rear end portion having a diameter larger than that of the three rod portion 53, and these four rod portions 51, 52, 53, 54 are sequentially located from the front end side to the rear end side of the rod-like portion 50. is doing.

  A screw groove 55 is formed on the outer peripheral surface of the first rod portion 51, and a screw groove 56 is formed on the outer peripheral surface of the front end portion of the second rod portion 52. A moving body 60, which is a substantially cylindrical brake body that can move along the rotation center axis C with respect to the second operating body 7, is screwed into the thread groove 56 of the second rod portion 52. A nut 59 which is a retaining member for preventing the moving body 60 from coming out of the second rod portion 52 is screwed into the thread groove 55 of 51. The moving body 60 is disposed in the support shaft portion 41, and the nut 59 is disposed in the moving body 60.

  The moving body 60 has a thread groove 61 formed on the inner peripheral surface thereof, and the thread groove 61 of the moving body 60 is screwed with the thread groove 56 of the second rod portion 52. The moving body 60 has a frusto-conical frusto-conical surface 62 having a substantially frusto-conical surface that gradually increases in diameter toward the front, and a part of the frusto-conical surface 62 is elastically deformed by the support shaft 41. The plate 43 is always in press contact with the inclined surface 43a. The moving body 60 has a plurality of, for example, four plate portions 63 that are integrally projected on the truncated conical surface 62 at intervals of 90 degrees, and the elastic deformation plates whose edges are adjacent to each other. It is inserted in the gap 44 between 43.

  A coil spring 65 that is a compression spring as a biasing body that biases the second operating body 7 rearward is disposed on the outer peripheral side of the third rod portion 53 of the rod-like portion 50. The coil spring 65 is disposed between the second operating body 7 and the support shaft portion 41 in a compressed state coaxially with the rod-like portion 50 of the second operating body 7, and the front end portion which is one end portion of the coil spring 65 is The rear end portion which is the other end portion of the coil spring 65 is in contact with the spring receiving portion 66 of the support shaft portion 41 via a circular annular interposed member 67, and the spring receiving portion of the rod-like portion 50 (the end surface of the fourth rod portion 54). ) 68 via a circular annular interposition member 69.

  Further, on the outer peripheral side of the fourth rod portion 54 of the rod-shaped portion 50, that is, the outer peripheral side of the rear end portion of the rod-shaped portion 50, a knob 70 having a substantially cruciform shape as viewed from the back is fixed.

  When the operator picks the knob 70 and rotates the second operating body 7 in one direction (tightening direction) with respect to the support shaft 41 of the tilt rotating body 13, as shown in FIG. The moving body 60 moves in one direction (rightward in FIG. 11) with respect to the second rod portion 52, and the movement of the moving body 60 causes the four elastically deforming plates 43 of the support shaft portion 41 to be truncated cone surfaces. The four elastic deformation plates 43 are pushed by 62 and elastically deformed outward in the radial direction of the support shaft portion 41, and as a result, the four elastic deformation plates 43 are deformed portion receiving portions 71 on the inner peripheral surface of the attachment support 14. It is crimped to. That is, the object support 14 is fixed to the outer surface of the elastic deformation plate 43 of the support shaft portion 41 of the tilt rotating body 13 by rotating the tilt operating body 13 in one direction relative to the tilt rotating body 13. The attachment support 14 is in a locked state.

  Further, when the second operating body 7 is rotated in the other direction (tightening release direction) with respect to the support shaft portion 41 of the tilt rotating body 13, the moving body 60 is moved in the other direction (see FIG. 11 is moved to the left direction), and the crimping and fixing to the outer surface of the elastic deformation plate 43 of the support shaft portion 41 of the attachment support 14 is released. That is, when the second operating body 7 is rotated in the other direction with respect to the tilt rotating body 13, the pressure fixing of the attached object support body 14 to the support shaft portion 41 of the tilt rotating body 13 is released, and the attached object support body 14. Is unlocked.

  Then, at the time of releasing the fixation, the operator rotates the attached object support body 14 about 90 degrees in one direction with respect to the support shaft portion 41 so that the attached object support body 14 is viewed from the rear surface. It is possible to set the right side tilt state (rightward state) facing the right side, and by rotating the support base 14 to the support shaft portion 41 in the other direction by approximately 90 degrees. The support 14 can be in a left side tilt state (a left-facing state) in which the support surface 14a faces the left side in a rear view.

  Further, at the time of releasing the fixing, even if the fixing of the attachment support body 14 to the support shaft portion 41 is released by a predetermined amount of rotation in the tightening releasing direction of the second operating body 7, FIG. 12 shows. As shown, the front end portions of the four elastic deformation plates 43 of the support shaft portion 41 are slightly elastically deformed based on the urging force of the coil spring 65 and pressed against the deformation portion receiving portion 71 of the attachment support 14. Yes. Therefore, the attachment support 14 is not in a free state that can rotate with respect to the support shaft portion 41, but is unlocked by receiving a desired braking force based on the biasing force of the coil spring 65 from the elastic deformation plate 43. It is in a state.

  The attachment support 14 is a substantially cylindrical shape in the front-rear direction provided on the outer peripheral side of the support shaft portion 41 of the tilt rotation body 13 so as to be pivotable in the vertical direction about the rotation center axis C. A fitting cylinder portion 73 is provided. A screw hole 74 is formed in the fitting cylinder 73, and a bolt 75 is screwed into the screw hole 74. The front end of the bolt 75 protrudes inward from the inner peripheral surface of the fitting tube portion 73, and this protruding portion serves as a guided portion 46 guided by the groove 45. Further, a part of the inner peripheral surface of the fitting tube portion 73 is a deformed portion receiving portion 71 having a substantially cylindrical surface shape, and the elastic deformation plate 43 of the support shaft portion 41 is pressed against the deformed portion receiving portion 71. The sheet is pressed. A substantially disc-shaped closing member 72 is attached to the front surface of the fitting cylinder portion 73, and the front opening of the fitting cylinder portion 73 is closed by the closing member 72.

  Further, a support base 76 such as a substantially plate-shaped side tilt base is fixed to the upper portion of the fitting cylinder 73, and a support plate 77 such as a quick shoe plate is detachably attached to the support base 76. ing. An operation lever 78 for fixing and releasing the support plate 77 with respect to the support base 76 is rotatably attached to the support base 76. A fixing screw 79 for fixing the support plate 77 to the lower surface of an attachment object such as a camera (not shown) is attached to the center portion of the support plate 77. The upper surface of the support plate 77 is a flat support surface 14a that supports the attachment object, and the fixing screw 79 protrudes upward from the center of the support surface 14a.

  The quick shoe type attachment support 14 includes a fitting cylinder 73, a support base 76, a support 77, an operation lever 78, a fixing screw 79, and the like. As is apparent from FIG. 13, the length dimension (width dimension) in the left-right direction of the support base portion 76 of the attachment support 14 is longer than the length dimension (width dimension) in the left-right direction of the tilt rotating body 13, and the support surface 14a. In the reference state in which the head is directed upward, the right end portion of the support base portion 76 protrudes to the right side from the right end position of the tilt rotating body 13, and the left end portion of the support base portion 76 protrudes to the left side from the left end position of the tilt rotating body 13.

  On the other hand, as shown in FIG. 1 to FIG. 6 and the like, the tripod 2 has a base 81 and a plurality of the bases 81 provided on the base 81 so as to be able to rotate about 180 degrees around the horizontal center axis. Three legs 82 which are substantially rod-like legs that can be stretched and one stretchable vertical length that is fixedly erected at the center of the base 81 and supports the pan head 1 that is a supported object. And a substantially rod-like support body 83.

  Each leg 82 has a pair of horizontally projecting shafts 86 on the outer peripheral side of the base end, which is one end, and each of these shafts 86 is rotatably held by a base body 81. A tip portion which is the other end portion of 82 is a free end portion 82a.

  The base 81 includes an upper base member 91 and a lower base member 92 that sandwich the shaft portion 86 of the leg 82 from above and below.

  The upper base member 91 has a vertical cylindrical portion 93 whose inner peripheral surface is formed in a substantially cylindrical surface shape, and an insertion portion 131 on the lower end side of the support 83 is provided on the inner peripheral side of the cylindrical portion 93. Is fitted and inserted. On the outer peripheral side of the cylindrical portion 93, a plurality of pairs, for example, three pairs of opposing plate portions 94 that are spaced apart from each other are integrally projected outwardly at an interval of approximately 120 degrees in the circumferential direction. A shaft holding concave portion 95 that is a substantially semicircular shaft holding portion that is fitted and press-contacted with the upper portion of the shaft portion 86 is formed at the lower portion of the opposing surface of each counter plate portion 94. On the upper surface of the cylindrical portion 93, a plurality of, for example, six concave grooves 96 extending in the radial direction are formed at intervals of approximately 60 degrees in the circumferential direction of the cylindrical portion 93. An inner end portion of the upper surface of the cylindrical portion 93 is a contact receiving surface 97.

  The lower base member 92 has a cylindrical portion 101 in which a screw groove 100 is formed on the inner peripheral surface, and the screw groove 100 of the cylindrical portion 101 has a screw of a screw portion 132 on the lower end side of the support 83. The groove 133 is screwed. On the outer peripheral side of the cylindrical portion 101, a plurality of pairs, for example, three pairs of opposing plate portions 102 that are spaced apart from each other are integrally projected outwardly at an interval of approximately 120 degrees in the circumferential direction. A shaft holding recess 103, which is a substantially semicircular shaft holding portion that fits and press-fits with the lower portion of the shaft portion 86, is formed on the upper surface of each facing plate portion 102, and both shaft holding recesses 95 and 103 are close to each other. Located opposite to each other. A substantially disc-shaped closing member 104 is attached to the lower surface of the cylindrical portion 101, and the lower surface opening of the cylindrical portion 101 is closed by the closing member 104. There is a slight gap 105 between the upper base member 91 and the lower base member 92.

  Then, only by rotating the support body 83 by a predetermined amount in the tightening direction (screw tightening direction) with respect to the base body 81, that is, only by rotating the support body 83 in the tightening direction. Each of the shaft portions 86 of the leg 82 is sandwiched from above and below by a shaft holding recess 95 of the upper base member 91 and a shaft holding recess 103 of the lower base member 92 so as to be rotatable with a predetermined holding force (tightening force). Is retained.

  The leg 82 is extendable, that is, adjustable in length, and has a plurality of, for example, six substantially cylindrical leg members 111 having different outer diameters, and the most contracted state (minimum length state). Then, five leg members 111 are positioned in the uppermost leg member 111, and in the most extended state (maximum length state), the six leg members 111 are positioned in a straight line (FIGS. 21 and 22). reference).

  The uppermost leg member 111 has a substantially cylindrical fitting portion 112 that fits between the opposing plate portions 94 and 102 of the base 81 so as to be rotatable. The fitting portion 112 has shaft portions 86 on both end surfaces in the axial direction, and has engaging portions 113 on the outer peripheral surface. A plurality of, for example, three engagement surfaces 113 a, 113 b, 113 c corresponding to the degree of leg opening of the leg body 82 are formed on the engagement portion 113 so as to face the circumferential direction of the fitting portion 112.

  The support 83 includes a substantially cylindrical first support member 116, a substantially cylindrical second support member 117 that moves in and out of the first support member 116, and the second support member 117. 1 has a fixing operation means 118 for fixing and releasing the fixing to the support member 116.

  The fixing operation means 118 is provided so as to be fitted on the inner peripheral side of the upper end portion of the first support member 116 and the substantially cylindrical operation member 119 screwed to the outer peripheral side of the upper end portion of the first support member 116. It is configured by a substantially cylindrical tubular member 120 that is elastically deformed by rotation and is fixed to the outer peripheral surface of the second support member 117 by pressure. The tubular member 120 is formed with a fixing notch 121.

  A lower closing member 122 is screwed to the inner peripheral side of the lower end portion of the second support member 117, and the lower opening of the second support member 117 is closed by the lower closing member 122. The lower closing member 122 is formed with a concave groove portion 127 for restricting rotation, and a second support is provided by fitting the concave groove portion 127 and a long convex portion 128 formed on the inner peripheral surface of the first support member 116. The rotation of the member 117 relative to the first support member 116 is restricted.

  An upper closing member 123 is screwed to the inner peripheral side of the upper end portion of the second support member 117, and the upper opening of the second support member 117 is closed by the upper closing member 123. A screw hole 124 is formed at the center of the upper closing member 123, and a fixing screw 125 is screwed into the screw hole 124. The upper surface of the upper closing member 123 is a flat support surface 126 that supports the pan head 1, and the fixing screw 125 is screwed into the screw groove 20 of the support shaft portion 16 of the base body 11 of the pan head 1, thereby The lower surface of the table 1 is fixed to the support surface 126.

  The first support member 116 has an insertion portion 130 inserted into the cylindrical portions 93 and 101 of the base body 81 at its lower end, and this insertion portion 130 is connected to the upper insertion portion 131 and the lower screw portion 132. Configured. The outer peripheral surface of the insertion portion 131 is formed in a substantially cylindrical surface shape, and the insertion portion 131 is fitted and inserted into the cylindrical portion 93 of the upper base member 91. A screw groove 133 is formed on the outer peripheral surface of the screw portion 132, and the screw groove 133 is screwed with the screw groove 100 of the tubular portion 101 of the lower base member 92.

  Further, the first support member 116 has an annular convex portion 135 and an annular concave portion 136 each having a substantially circular annular shape on the outer peripheral surface near the lower end. The lower surface of the annular convex portion 135 is a contact surface 137, and the contact surface 137 contacts the contact receiving surface 97 of the tubular portion 93 of the upper base member 91 in a planar shape. A plurality of, for example, two spring bearing members 138 are fitted on the outer peripheral side of the annular recess 136. Each spring receiving member 138 has a fitting projection 139 on the inner surface, and this fitting projection 139 is fitted in the fitting hole 140 of the annular recess 136. Each spring receiving member 138 has a substantially semicircular flange 141 at its upper end, and the two flanges 141 constitute a spring receiving 142 that is a spring receiver. That is, the first support member 116 has a substantially circular annular spring receiving portion 142 on the outer peripheral surface near the lower end.

  Further, the first support member 116 is a tool insertion hole portion into which a tool 143 such as a screwdriver is removably inserted when the first support member 116 of the support 83 is rotated with respect to the base 81 during assembly. 144 is provided at a position slightly above the spring receiving portion 142. That is, a substantially circular tool insertion hole 144 is formed in a portion of the first support member 116 facing each other so as to penetrate in the radial direction.

  The tripod 2 includes a restricting means 151 that is a stopper means disposed near the lower end of the first support member 116 of the support 83, and a spring receiving portion of the restricting means 151 and the first support member 116. And a coil spring 152 that is a compression spring that is disposed in a compressed state as a biasing member that biases the restricting means 151 downward.

  The restricting means 151 is rotatable about the first support member 116 with respect to the first support member 116 and can be moved up and down with respect to the first support member 116. Then, the restricting means 151 is engaged with the restricting state and the engaging portion 113 in which the turning of the leg 82 is restricted by the engagement with the engaging portion 113 of the leg 82 by the rotation with respect to the first support member 116. In addition, it is selectively switched to an allowable state in which the leg 82 is allowed to rotate upward. At the time of this switching, it is necessary to once raise the regulating means 151 against the urging force of the coil spring 152 against the first support member 116.

  The restricting means 151 includes a cylindrical main body member 154, an annular plate-shaped bottom member 155 fixedly attached to the lower surface of the main body member 154 with a screw 156 as a fixture, and the main body member 154 and the bottom member. A plurality of, for example, three operation bodies 157, which are provided so as to be slidable, for example, are slidable between the operation engagement members 157.

  The main body member 154 has a knob portion 158 that is an operation portion that an operator picks, and the outer peripheral surface of the knob portion 158 is formed in a substantially hexagonal cylindrical surface shape. On the lower surface of the main body member 154, a plurality of, for example, three guide grooves 159 for guiding the operation engagement member 157 are formed. A step-shaped spring receiving portion 149 is formed on the inner peripheral surface of the main body member 154, and an upper end that is one end portion of the coil spring 152 abuts on a spring receiving portion 142 of the support 83, and the other end of the coil spring 152 is The lower end portion which is a portion is in contact with the spring receiving portion 149 of the main body member 154 via a circular annular interposed member 148.

  A plurality of, for example, six screw insertion holes 160 are formed in the bottom member 155 so as to penetrate the upper and lower surfaces. The bottom member 155 has three support plate portions 147 that movably support the lower surface of the operation engagement member 157 on the outer peripheral side, and each support plate portion 147 has a plurality of, for example, three positioning hole portions 146. Is formed through the top and bottom surfaces.

  Further, as shown in FIG. 5B, the bottom member 155 has a plurality of, for example, three, which are detachably fitted to the concave groove 96 which is the fitting portion of the upper base member 91 shown in FIG. The fitting convex part 161 which is one fitting part is provided in the lower surface. The three fitting protrusions 161 are formed on the lower surface of the bottom member 155 at approximately 120 degrees in the circumferential direction of the bottom member 155, and are slightly elongated in the radial direction of the bottom member 155.

  Then, the three concave groove portions 96 and the three fitting convex portions 161 that face the space portion 94a between the opposing plate portions 94 that are spaced apart from each other in the six concave groove portions 96 shown in FIG. When it is made to be restricted, the restricting means 151 is in a restricted state, and when the other three concave groove portions 96 and the three fitting convex portions 161 are fitted to each other, the restricting means 151 is allowed to be in an allowed state. When switching the state of the restricting means 151, the operator picks the knob 158 and raises the restricting means 151 slightly against the urging force of the coil spring 152, so that the concave groove portion 96 and the fitting convex portion 161 Release the fitting.

  The concave groove portion 96 and the fitting convex portion 161 constitute a positioning means 150 that positions the restricting means 151 with respect to the base body 81 in each state (restricted state or allowable state).

  The operation engagement member 157 has a knob 162 that is an operation part that an operator picks, and the front surface of the knob 162 is an engagement surface of the engagement part 113 of the leg 82 when the restriction means 151 is in a restricted state. Engagement surfaces 163 are formed to abut and engage with 113a, 113b, 113c in a planar manner. A guided portion 164 guided by a guide groove portion 159 is integrally provided on the rear surface of the knob 162, and the guided portion 164 is movably held between the main body member 154 and the bottom member 155. .

  The guided portion 164 is formed with a storage recess 165 that opens downward, and a coil spring 166 that is a compression spring and a ball member 167 as a biasing member are stored in the storage recess 165. As shown in FIG. 2, when the restricting means 151 is in the restricted state, the ball member 167 is biased downward by the coil spring 166, and is engaged with and disengaged from the upper end opening edge of the hole 146 of the bottom member 155. Engagement possible. In other words, due to the engagement between the ball member 167 and the hole 146, the engagement surface 163 of the operation engagement member 157 corresponds to the engagement positions (normally open leg position, semi-low angle) corresponding to the engagement surfaces 113a, 113b, 113c. Open leg position and low-angle open leg position).

  When the operator picks and moves the operation engagement member 157 to change the leg opening degree of the leg 82, the ball member 167 is moved to the coil spring 166 based on the force applied to the operation engagement member 157 by the operator. As a result, the engagement with the hole 146 is released. The coil spring 166, the ball member 167, and the hole 146 constitute positioning means 170 that positions the operation engagement member 157 at each engagement position with respect to the base 81.

  18 shows a normal open state in which the engagement surface 163 of the operation engagement member 157 and the engagement surface 113a of the leg 82 are engaged, and FIG. 19 shows the engagement surface 163 of the operation engagement member 157. FIG. 20 shows the engagement surface 163 of the operation engagement member 157 and the engagement surface 113b of the leg 82. The combined low-angle legs are shown.

  FIG. 17 shows a closed leg state when the three legs 82 are in the downward vertical state, and FIG. 13 shows that the three leg bodies 82 are in the upward vertical state when the restricting means 151 is allowed. The closed leg state is shown. In the upward state shown in FIG. 13, the three legs 82 project upward from the base body 81 and are positioned along the vertical direction (including the substantially vertical direction). In the downward vertical state shown in FIG. 17, the three legs 82 project downward from the base body 81 and are positioned along the vertical direction (including the substantially vertical direction).

  As is apparent from FIG. 13, the length dimension (minimum length dimension) of the support 83 in the contracted state is shorter than the length dimension (minimum length dimension) of the leg 82 in the most contracted state. The pan head 1 and the tripod 2 constitute a tripod 5 with a pan head.

  When the tripod 5 with the pan head is used, the three legs 82 are set in a downward inclined state, that is, in a desired open leg state, and the pan head 1 is attached to the support surface 126 of the support 83. An attachment object such as a camera is attached to the support surface 14a, and the subject is photographed with the attachment object.

  On the other hand, when the tripod 5 with the pan head is not used, such as when it is carried, the attachment object is removed from the support surface 14a of the pan head 1, and the pan head 1 is attached to the support surface 126 of the support body 83 and the three legs. It is possible to set the body 82 in an upwardly inclined state and the first operating body 6 in a vertical state so that the tripod 5 with a pan head is in a compact state suitable for being carried or stored in the back. .

  That is, in the pan head 1, when the base body 11 of the pan head body 3 is attached to the upper end portion of the support body 83 of the tripod 2, the three legs 82 of the tripod 2 can be set in the upward vertical state. It is. In the closed leg state in which the three legs 82 of the tripod are in the upward vertical state, at least a part of the pan head body 3, that is, for example, the lower part of the pan head body 3 is the free end portion of the three leg bodies 82. The first operating body 6 is positioned between the two legs 82 in parallel with the three legs 82.

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

  When the subject is photographed with an attachment such as a camera using the tripod 5 with a pan head, the attachment is removed and the tripod 5 with a pan head is made into a compact state suitable for carrying or the like. While the head body 3 is attached to the upper end of the support 83 of the tripod 2, the attachment support 14 of the head body 3 is brought into a reference state in which the support surface 14a faces upward.

  Thereafter, the restricting means 151 is allowed to rotate by approximately 60 degrees with respect to the base body 81, and then the left and right two leg bodies 82 of the three legs 82 of the tripod 2 are attached to the base body 81. On the other hand, it is rotated upward about the shaft portion 86, and the two legs 82 are set in an upward vertical state. At this time, the leg 82 does not interfere with the first operating body 6, the second operating body 7, the support base 76, etc., and the two legs 82 can be rotated until they are in the upward vertical state. it can.

  Next, the tilt rotating body 13 is moved downward together with the attachment supporting body 14 with respect to the pan rotating body 12, and the first operating body 6 is set in a vertical state parallel to the upwardly-facing leg body 82. A part of the operating body 6 is positioned between the legs 82 in the upward vertical state on the left and right sides of the rear side facing each other.

  Thereafter, the remaining one leg 82 on the front side is rotated upward with respect to the base body 81 to be in an upward vertical state. At this time, the leg 82 does not interfere with the first operating body 6, the second operating body 7, the support base 76, and the like, and the leg 82 can be rotated upward until it is in the vertical state.

  A compact state of the tripod 5 with the pan head is shown in FIGS. 13 to 16. In this state, the free end portion 82 a of one leg 82 of the three legs 82 is tilted on the pan head body 3. The free end 82a of the other leg 82 is located close to, for example, in contact with one side surface of the rotating body 13, and close to, for example, in contact with the other side surface of the tilt rotating body 13 of the pan head body 3. The tilt rotating body 13 is positioned between the free end portions 82a of the two left and right leg bodies 82. Further, a part of the free end portion 82a of the front leg body 82 is inserted into the opening 28 of the tilt rotating body 13 of the pan head main body 3, and the outer periphery of the fitting cylinder portion 21 of the pan rotating body 12 is inserted. It is located close to, for example, in contact with the surface.

And according to the above embodiment, only by rotating the first support member 116 of the support 83 in the tightening direction with respect to the base 81,
The first support member 116, the upper base member 91, and the lower base member 92 can be integrated, and the shaft portions 86 of the three legs 82 are connected to the shaft holding recess 95 of the upper base member 91 and the shaft of the lower base member 92. Since the holding recess 103 can be appropriately pivotably held with a predetermined holding force, the assembling property can be improved, for example, the burden on the assembling worker can be reduced, and the structure is simple. Can also be achieved.

  Further, it is easy to tighten the support body 83 in the tightening direction until a predetermined holding force is obtained by the both-axis holding recesses 95 and 103 using a tool 143 such as a screwdriver inserted into the tool insertion hole 144 of the support body 83. Therefore, the assembling property can be further improved.

  Furthermore, the regulating means 151 can be easily switched between the restricted state and the allowed state by the rotation of the restricting means 151 with respect to the support 83, and the operability is good.

  Further, the leg body 82 is rotatable about 180 degrees around the shaft portion 86 with respect to the base body 81, and the three leg bodies 82 are rotated upward with the pan head 1 attached until it is in the vertical state. Therefore, a compact state suitable for carrying or the like when not in use such as when carrying can be achieved. In other words, in the tripod 5 with the pan head, the second operating body 7 is positioned directly above the first operating body 6, and the first operating body 6 and the second operating body 7 are located on the left and right sides of the tilt rotating body 13. Since the pan head body 3 is attached to the upper end of the support 83 of the tripod 2, the three legs 82 of the tripod 2 are disposed at the center of the direction in the vertical direction as viewed from the rear. The tripod 5 with a pan head can be made into a compact state suitable for carrying or the like when not in use, such as when carrying.

  The positioning means 150 is not limited to the one composed of the concave groove portion 96 and the fitting convex portion 161. For example, as shown in FIGS. 23 (a) and 23 (b), the positioning means 150 and the substantially circular hole portion 96a It may be configured with a pin portion 161a fitted into the hole portion 96a.

  Further, the positioning means 150 may be constituted by, for example, a convex portion formed on the upper surface of the upper base member 91 and a concave portion formed on the lower surface of the bottom member 155.

  Furthermore, the number of engaging surfaces of the engaging portion 113 of the leg 82 is arbitrary, and may be two, for example, or four or more.

  In addition, the pan head 1 rotates, for example, the three legs 82 of the tripod 2 upward with respect to the base body 81 so that the three legs 82 are in the upward vertical state, and then the tilt rotating body 13 is panned. For example, the first operating body 6 may be moved downward with respect to the rotating body 12 so as to be in a vertical state parallel to the three upwardly extending legs 82.

  Further, the urging body is not limited to the coil springs 65, 152, 166, and may be a leaf spring, a cylindrical elastic rubber, or the like.

1 Head to be supported 2 Tripod
81 substrate
82 legs
83 Support
86 Shaft
91 Upper base member
92 Lower base
93 Tube
95 Shaft holding recess that is the shaft holding part
100 thread groove
101 Tube
103 Shaft holding recess that is the shaft holding part
113 Engagement part
133 Thread groove
137 Contact surface
143 tools
144 Tool insertion hole
151 Regulatory measures

Claims (4)

A substrate;
A leg having a shaft portion rotatably held by the base;
A support that is erected on the base and supports a supported object;
The substrate is
An upper base member having a cylindrical portion and a shaft holding portion through which the support is inserted;
A lower base member having a cylindrical portion having a thread groove formed on the inner peripheral surface and a shaft holding portion;
The support is
A contact surface that contacts the upper surface of the cylindrical portion of the upper base member;
A thread groove that engages with the thread groove of the lower base member;
By rotating the support relative to the base, the shaft portion of the leg can be rotated by the shaft holding portion of the upper base member and the shaft holding portion of the lower base member. A tripod characterized by being held. The tripod according to claim 1, wherein the support has a tool insertion hole into which a tool is inserted when the support is rotated. The leg has an engaging portion,
A restricted state that is pivotable with respect to the support and restricts upward pivoting of the leg by engaging with the engaging part by pivoting, and above the leg without engaging with the engaging part. The tripod according to claim 1, further comprising a restriction unit that is switched to an allowable state that allows rotation. The tripod according to any one of claims 1 to 3, wherein the leg is rotatable about 180 degrees around the shaft portion with respect to the base.

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