JP4449013B2 - Pan head device - Google Patents

Description

  The present invention relates to a pan head apparatus with improved operability.

  A free pan head will be described as an example of a pan head device. The free pan head has a spherical ball, an upper plate connected to the ball via a neck portion for supporting a camera and the like, and a main body for supporting the ball so as to be rotatable and fixed at an arbitrary angle. The main body has a pair of normal ball receiving surfaces sandwiching the outer peripheral surface of the ball and a set screw for fixing the ball by changing the distance between the ball receiving surfaces. By turning this set screw, the distance between the ball receiving surfaces can be narrowed to fix the ball at an arbitrary angle, and the orientation of the camera or the like can be freely set.

  At the upper end of the main body, a U-shaped recess (slot) is usually formed in a part of the circumferential direction. By tilting the ball neck into the slot, the upper plate can be tilted by 90 °. It has become. Thereby, the position of the camera can be tilted from the horizontal position to the vertical position.

Japanese Patent Laid-Open No. 10-288811

  However, in the conventional pan head device, the operation knob for fixing the ball and the relative position of the slot are fixed with respect to the main body. For this reason, when shooting at the angle where the ball neck is tilted into the slot, the control knob and the camera approach each other, making it difficult to turn the control knob or turning the control knob to a position that is difficult to operate. There was a thing.

A pan head apparatus according to the present invention includes a spherical ball portion, a main body that supports the ball portion so that the ball portion can be rotated and fixed at an arbitrary angle, a support portion that is fixed to the ball portion and supports an apparatus, A base, and the main body includes a lower part of the main body having at least one pair of ball receiving surfaces sandwiching an outer peripheral surface of the ball portion, and another lower part of the ball receiving surface. An upper part of the main body rotatably attached to the upper part, a recess formed on the upper part of the main body to enable tilting of the ball part, a fastening mechanism for changing the distance between the ball receiving surfaces, an operation knob for operating the fastening mechanism provided on the lower body, the center axis which is fixed relative to the same time the lower body when fixing the ball portion by the fastening mechanism provided rotatably relative to the body lower And have Wherein the base to the central axis is fixed, the elastic body forming the annular shape between the base and the lower body is characterized in that it is arranged.

In the pan / tilt head device according to the present invention, for example, a base fixed to a tripod, a lower part of the main body provided with an operation knob, an upper part of the main body having a recess for determining a tilting direction of the support part, and a ball part are independent of each other. Can be rotated. Therefore, even when shooting at an angle where the neck of the ball part is tilted into the recess, the operation knob and the support part can be appropriately separated, and the operation of the operation knob does not become difficult.
In addition, since an annular elastic body is provided between the lower part of the main body and the base, even when the fastening by the fastening mechanism is released by the operation knob, the rattling between the lower part of the main body and the base and It is possible to prevent rapid rotation and improve the operability of the pan head in a state where the fastening is released.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment, A well-known structure may be applied to the following embodiment, and the structure of the following embodiment may be combined or mutually replaced. .

1 to 4 show a free pan head as a reference example of the pan head device for explaining the configuration of the present invention . However, the present invention is not limited to the application to this type of free pan head, and can be applied to any pan head device in which the ball portion is sandwiched and fixed by at least a pair of ball receiving surfaces. The free pan head of this embodiment is attached to the upper end of a tripod, for example, and plays the role which hold | maintains a camera, a telescope, binoculars, a measurement instrument etc. in arbitrary directions, for example. However, the pan head apparatus of the present invention is not limited to such an application, and may be used for any application.

The free pan head includes a spherical ball 6, a main body 1 that supports the ball 6 so that the ball 6 can rotate and can be fixed at an arbitrary angle, a support unit 10 that is fixed to the ball 6 and supports a device such as a camera, And a base (20) fixed to a tripod or the like.

The main body 1 includes a lower body (1A, 2, 14, 16) having at least one ball receiving surface (48) sandwiching the outer peripheral surface of the ball 6 and another one (34) of the ball receiving surface. And an upper ball receiver 4 rotatably attached to the lower portion of the main body (1A, 2, 14, 16), and a recess 72 formed on the upper ball receiver 4 for allowing the ball 6 to tilt (see FIG. 2), a fastening mechanism (14, 16, 22) for changing the distance between the ball receiving surfaces (34, 48), an operation knob 24 provided at the lower part of the main body for operating the fastening mechanism, and fastening And a central axis (18) which is fixed at the same time as the ball 6 is fixed by the mechanism. A base (20) is fixed to the central axis (18).

  The lower part (1A, 2, 14, 16) of the main body includes a cylindrical base portion 1A, an annular ring screw 2 attached to the upper end of the base portion 1A, and a disk-shaped lower ball receiver respectively disposed in the base portion 1A. 14 and an annular top 16, and a set screw 22 provided through the side surface of the base 1 </ b> A. The operation knob 24 is fixed to the set screw 22.

  A cylindrical upper ball receiver (main body upper part) 4 is coaxially attached to the upper end of the base 1 </ b> A via a ring screw 2. A female screw 26 is formed on the inner peripheral surface of the lower part of the ring screw 2, and is screwed with a male screw 28 formed on the upper end of the base 1A. An engagement portion 30 that protrudes inward is formed at the upper end of the ring screw 2, and this engagement portion 30 engages with an engagement portion 32 that is formed at the lower end portion of the upper ball receiver 4 over the entire circumference. ing.

  The inner peripheral surface of the upper end portion of the upper ball receiver 4 is a ball receiving surface 34 that swells upward. The diameter of the ball receiving surface 34 and the inclination angle of the cross section are set so that the substantially central portion in the width direction of the ball receiving surface 34 is in contact with the outer peripheral surface of the ball 6. A portion that becomes the ball receiving surface 34 may be formed of a material different from that of the main body of the upper ball receiver 4. One slot (concave portion) 72 is formed in a part of the upper end portion of the upper ball receiver 4 as shown in FIG. Two or more slots 72 may be formed in the upper ball receiver 4.

  A spherical ball 6 is accommodated in the upper ball receiver 4. A cylindrical neck portion 8 extending coaxially is integrally formed on the ball 6, and an upper plate (support portion) 10 is fixed vertically to the tip of the neck portion 8. The width of the slot 72 is slightly larger than the diameter of the neck portion 8, and the lower end of the slot 72 is semicircular. Accordingly, the neck portion 8 can fall, for example, 90 ° into the slot 72, and the camera can be used in the vertical position, for example.

  As shown in FIG. 3, the upper plate 10 includes a frame 40 that has a rectangular shape in plan view, a disk-shaped rotating plate 42 accommodated in the frame 40, and a male fixed to the rotating plate 42. The screw 12 and the non-slip sheet 44 attached to the upper surface of the top plate portion of the frame body 40 are included. The shape of the upper plate 10 is not limited to a rectangular shape, and may be a circle or an ellipse. The anti-slip sheet 44 may be a known material such as rubber or cork. In the present invention, since the upper plate 10 can be tilted in any direction, the device easily rotates with respect to the upper plate 10 at the time of tilting. However, by providing the non-slip sheet 44, the rotation of the device can be suppressed. However, a configuration without the anti-slip sheet 44 is also possible.

  The male screw 12 passes through the top plate portion of the frame body 40 and is fastened by a washer 46 so as not to come out of the top plate portion. The rotating plate 42 is partially exposed from the frame body 40, and the male screw 12 rotates by rotating the rotating plate 42. The supported object is fixed to the upper plate 10 by screwing the male screw 12 into the female screw on the lower surface of a device such as a camera (supported object). The upper plate 10 is vertically fixed to the upper end of the neck portion 8 by a screw 38 disposed coaxially in the neck portion 8. The upper plate 10 and the ball 6 may be connected by a linear neck portion 8 as shown in the figure, or the connection angle and relative position of the ball 6 and the upper plate 10 may be varied by bending the neck portion 8. You may change to

  As shown in FIG. 1, a cylindrical cavity 6 </ b> A and a screw hole 36 are formed coaxially with the neck portion 8 to reduce the weight, and the cavity 6 </ b> A opens at the lower end surface of the ball 6. Yes. The inner diameter of the cavity 6A is, for example, 30 to 45% of the diameter of the ball 6, but is not limited to this range. The cavity 6A may not be present. The screw hole 36 accommodates a screw 38.

  A cylindrical cavity 15 is formed inside the base 1A, and a lower ball receiver 14, a top 16 and a shaft body 18 are accommodated in this cavity 15 in this order from the top. The lower ball receiver 14 has a mortar shape, the inner diameter of the cavity 15 is slightly larger than the outer diameter of the lower ball receiver 14, and the lower ball receiver 14 slides up and down along the inner peripheral surface of the cavity 15. At the upper end of the lower ball receiver 14, a ball receiving surface 48 that is formed in an annular shape when viewed from above and is inclined in a mortar shape is formed, and this ball receiving surface 48 supports the lower surface of the ball 6. The diameter of the ball receiving surface 48 and the inclination angle of the cross section are set so that the substantially central portion in the width direction of the ball receiving surface 48 is in contact with the outer peripheral surface of the ball 6.

  The inner diameter of the ball receiving surface 48 is set sufficiently larger than the inner diameter of the cavity 6 </ b> A of the ball 6. In this example, the cross section along the axial direction of the ball receiving surface 48 is linear, and the contact area between the ball 6 and the ball receiving surface 48 is annular. The width of the annular region may be so narrow that it can be regarded as almost a line, or by making the ball receiving surface 48 a concave curved surface and making its curvature close to the curvature of the outer peripheral surface of the ball 6, the width of the contact region can be increased. Good. A portion that becomes the ball receiving surface 48 may be formed of a material different from that of the main body of the lower ball receiver 14.

  A tapered surface 52 is formed on the lower surface of the lower ball receiver 14 so as to sag downward. The upper end of the top 16 is a tapered surface 54 having the same taper as the tapered surface 52, and both are in contact with each other substantially coaxially. A tapered surface 56 is also formed at the lower end of the top 16 so as to sag upward. The outer diameter of the top 16 is smaller than the outer diameter of the lower ball receiver 14.

A flange portion 64 projecting in an annular shape is formed at the upper end of the shaft body 18, and the flange portion 64 is locked to an annular stepped portion 66 formed in the cavity 15. The shaft body 18 is rotatable and movable upward. The upper end surface of the shaft body 18 is a tapered surface 58 corresponding to the tapered surface 56 of the top 16. The taper angle of each contact portion in this reference example is preferably about 15 °, but functions if it is 45 ° or less.

  A female screw hole is formed in a part of the side surface of the base 1A toward the shaft center, and a set screw 22 is screwed into the female screw hole. When the operation knob 24 is turned and the set screw 22 is tightened, the tip pushes the top 16 to decenter it. When the top 16 is eccentric, the shaft 18 is pressed downward, the lower ball receiver 14 is pushed up, and the ball 6 is pushed up. As a result, the ball 6 is firmly sandwiched between the ball receiving surface 34 of the upper ball receiver 4 and the ball receiving surface 48 of the lower ball receiver 14 and is prevented from rotating. In this state, both the ball receiving surface 34 and the ball receiving surface 48 abut on the ball 6 with an annular region having a small width. On the other hand, the flange portion 64 of the shaft body 18 is pressed against the stepped portion 66, and the rotation of the shaft body 18 is stopped by friction between the two. Further, since the upper ball receiver 4 is pressed by the ball 6 and the engaging portion 32 is strongly engaged with the engaging portion 30 of the ring screw 2, the rotation of the upper ball receiver 4 is also stopped.

  A female screw hole 60 is formed in the center of the lower surface of the shaft body 18, and this female screw hole 60 is fixed to a male screw provided at the upper end of a tripod or the like. Further, a reduced diameter portion 68 is formed at the lower end portion of the shaft body 18, and the disk-shaped base plate 20 is coaxially fixed to the reduced diameter portion 68 and is disposed along the lower surface of the base portion 1 </ b> A. The outer diameter of the base plate 20 is slightly larger than the outer diameter of the base portion 1A, and an annular protrusion 62 protruding upward is formed on the entire outer periphery of the base plate 20. The protrusion 62 covers the lower edge of the base portion 1A, and has an effect of hiding the gap between the base portion 1A and the base plate 20. The base plate 20 cannot be rotated with respect to the base portion 1 </ b> A when the set screw 22 is tightened with the operation knob 24, and can be rotated when the operation knob 24 is loosened.

  When using the above-described pan head device, the female screw hole 60 of the shaft body 18 is applied to the male screw at the upper end of a tripod or the like and tightened. Further, the male screw 12 is applied to the female screw on the lower surface of the camera, and the rotating plate 42 is turned to tighten the male screw 12.

  Next, the camera 6 is positioned by turning the ball 6 so that the upper plate 10 is at an appropriate angle. If the position of the slot 72 is not appropriate, the upper ball receiver 4 is turned to adjust the position of the slot 72. Then, the position of the operation knob 24 is also adjusted to a place where handling is easy. Thereby, as shown in FIG. 4, it is possible to prevent the operation knob 24 from being provided in the direction in which the upper plate 10 falls. When the positioning is completed, the operation knob 24 is tightened. Then, the top 16 is eccentric, the ball 6 is fixed, the base plate 20 cannot be rotated, and the upper ball receiver 4 is also fixed to the base 1A. That is, all the fixing is completed only by tightening the operation knob 24. If the operation knob 24 is loosened, all of the base plate 20, the upper ball receiver 4, and the ball 6 move.

As described above, in this reference example , by loosening the operation knob 24, the base plate 20 fixed to the tripod, the base 1A provided with the operation knob 24, and the slot 72 for determining the tilting direction of the upper plate 10 are provided. The upper ball receiver 4, the upper plate 10, and the ball 6 can be freely rotated independently of each other. For this reason, even when shooting at an angle where the neck 8 of the ball 6 is tilted into the slot 72, the operation knob 24 can be appropriately separated from the device, and the operation knob 24 is not difficult to operate. . Further, since all the above fixing and releasing can be performed by simply tightening the operation knob 24, the operability is good.

5 to 8 show an embodiment of the present invention in which the effect of reducing the rattling between the base 1A and the base plate 20 is enhanced. Parts that are not particularly described may be the same as those in the reference example of FIG.

In the embodiment of FIG. 5, the lower end edge of the base portion 1 </ b> A is chamfered obliquely over the entire circumference to form a chamfered portion 76. An O-ring 74 made of an elastic body is sandwiched between the inside of the protrusion 62 of the base plate 20 and the chamfered portion 76. The cross-sectional shape of the O-ring 74 is preferably circular, but may be other shapes such as an ellipse or a rectangle. As the elastic body, rubber-based materials, engineering plastics (particularly, tetrafluoroethylene and polyacetal) can be used. The same applies to the following embodiments. According to this structure, since the gap amount between the outer peripheral edge of the lower end portion of the base portion 1A and the outer peripheral portion of the base plate 20 is kept constant over the entire circumference by the O-ring 74, the backlash between the base portion 1A and the base plate 20 is maintained. The stickiness can be reduced. Further, when the operation knob 24 is loosened, the O-ring 74 gives an appropriate rotational resistance to the base plate 20 and can enhance the operational feeling. In order to make the rotation resistance appropriate, a lubricant such as grease may be applied to the surface of the O-ring 74.

  In the embodiment of FIG. 6, an annular groove 80 is formed on the entire inner side of the protrusion 62 of the base plate 20. A ring 78 made of an elastic body is fitted in the groove 80 and is in contact with the lower surface of the base portion 1A. According to this embodiment, the same effect as that of the embodiment of FIG. 5 can be obtained.

  In the embodiment of FIG. 7, an annular groove 82 is formed on the entire outer periphery of the lower end surface of the base 1 </ b> A. An O-ring 84 made of an elastic material is fitted into the groove 82 and is in contact with the upper surface of the base plate 20. According to this embodiment, the same effect as that of the embodiment of FIG. 5 can be obtained.

  In the embodiment of FIG. 8, an annular recess 86 is formed on the inner peripheral portion of the lower end surface of the base portion 1 </ b> A over the entire periphery. An annular wave spring (wave washer) 88 is disposed in the recess 86 and is in contact with the upper surface of the base plate 20. According to this embodiment, the same effect as that of the embodiment of FIG. 5 can be obtained. Grooves may be formed on both the lower surface of the base portion 1A and the upper surface of the base plate 20, and an elastic ring may be disposed between the grooves.

9 to 11 show an embodiment in which the structures of the lower ball receiver 14, the piece 16, and the shaft body 18 are changed. Parts that are not particularly described may be the same as those in the above-described embodiment. In the embodiment of FIG. 9, the upper end surface of the shaft body 18 is a flat horizontal surface 90, and the lower end surface of the top 16 is also a flat horizontal surface. In this case, the angle of the taper contact surface is larger than that of the above-described embodiment, and is preferably about 30 °. Even when the lower end surface of the top 16 is horizontal as in this embodiment, if the top 16 is eccentric by the set screw 22, the lower ball receiver 14 is pressed upward by the eccentricity of the tapered surfaces 52, 54, and the shaft Since the body 18 is pressed downward by the reaction force, the same effect as that of the above-described embodiment can be obtained.

In the embodiment of FIG. 10, the lower end surface of the lower ball receiver 14 is a flat horizontal surface 92, and the upper end surface of the top 16 is also a flat horizontal surface. In this way, even when the upper end surface of the top 16 is horizontal, if the top 16 is eccentric by the set screw 22, the shaft body 18 is pressed downward by the eccentricity of the tapered surfaces 56 and 58, and the lower ball receiver 14 is Since it is pressed upward by the reaction force, the same effect as the above-described embodiment can be obtained.

In the embodiment shown in FIG. 11, a tapered surface 94 is formed on the upper end surface of the lower ball receiver 14, and the upper surface of the top 16 is correspondingly tapered. It is said that. On the other hand, the lower end surface of the top 16 is a tapered surface 98 that swells downward, and the upper end surface of the shaft body 18 is also a correspondingly tapered surface 100 that swells downward. When the top 16 is decentered by the set screw 22, the tapered surfaces 94 and 96, 98 and 100 are decentered, so that the lower ball receiver 14 is pressed upward and the shaft 18 is pressed downward. Thereby, the same effect as the above-mentioned embodiment is acquired.

FIGS. 12-14 has shown embodiment which employ | adopted the fastening mechanism which does not use the set screw 22. FIG. Portions that are not particularly described may be the same as those in the above-described embodiment.
In the embodiment of FIG. 12, a fastener 102 as shown in FIG. 13 is used instead of the set screw 22 and the top 16. The fastener 102 includes a C-shaped annular portion, a pair of arms 104 extending in parallel from both ends of the annular portion, a screw 108 for adjusting the distance between the tips of the arms 104, and the screw 108. And a knob 106. Tapered surfaces 110 and 112 that are complementary to the tapered surface 54 and the tapered surface 58 are formed on the upper surface and the lower surface of the annular portion, respectively. When the knob 106 is tightened, the arms 104 approach each other, the tapered surfaces 110 and 112 are reduced in diameter, and the lower ball receiver 14 is pressed upward and the shaft body 18 is pressed downward. Thereby, the same effect as the above-mentioned embodiment is acquired.

The embodiment of FIG. 14 has a structure in which the lower ball receiver 14 is omitted from the embodiment of FIG. In the fastener 114 according to this embodiment, the length of the C-shaped annular portion in the axial direction is large, and the upper end of the annular portion reaches the ball 6. A pair of arms 104 extending in parallel from both ends of the annular portion, a screw 108 for adjusting the distance between the tips of the arms 104, and a knob 106 for turning the screw 108 are provided. A tapered surface 116 corresponding to the outer peripheral surface of the ball 6 is formed on the upper surface of the annular portion, and a tapered surface 118 complementary to the tapered surface 58 is formed on the lower surface of the annular portion. When the knob 106 is tightened, the arms 104 approach each other, the tapered surfaces 116 and 118 are reduced in diameter, and the ball 6 is pressed upward and the shaft body 18 is pressed downward. Thereby, the same effect as the above-mentioned embodiment is acquired. Compared with the embodiment of FIG. 12, the number of parts can be reduced.

15 to 17 show reference examples in which the connection structure between the upper ball receiver 4 and the base 1A is changed. Parts that are not particularly described may be the same as those in the reference example of FIG. In the embodiment of FIG. 15, an annular groove 120 is formed over the entire outer periphery of the upper end surface of the base portion 1 </ b> A, and a male screw is formed on the inner peripheral surface of the groove 120. The lower end of the ring screw 2 is inserted into the groove 120, and the female screw 26 on the inner peripheral surface of the ring screw 2 is screwed into the groove of the groove 120. With this configuration, the same effects as those of the above-described embodiment can be obtained.

In the reference example of FIG. 16, a cylindrical sleeve 122 that covers the entire base 1 </ b> A is used instead of the ring screw 2. The inner diameter of the sleeve 122 is substantially equal to the outer diameter of the base portion 1A, and covers the entire circumference coaxially with the base portion 1A with almost no gap. The sleeve 122 is fixed to the base 1A with two detachable screws 124, for example. An engaging portion 30 that protrudes inward is formed at the upper end of the sleeve 122, and this engaging portion 30 engages with an engaging portion 32 formed at the lower end of the upper ball receiver 4. The upper ball receiver 4 is fixed. Also with this configuration, the same effect as the reference example of FIG. 1 can be obtained. Further, by forming the sleeve 122 with a high-quality material, it is possible to enhance the high-quality feeling of the pan head device. The sleeve 122 may be fixed to the base 1A with a C-shaped retaining ring instead of a screw.

In the reference example of FIG. 17, instead of integrally forming the engaging portion 32 at the lower end of the upper ball receiver 4, a groove extending over the entire circumference is formed on the outer peripheral surface of the lower end portion of the upper ball receiver 4. It is characterized in that a letter-shaped washer 126 is fitted. The upper ball receiver 4 can be fixed by the ring screw 2 by engaging the washer 126 with the engaging portion 30 formed at the upper end of the ring screw 2. Also with this configuration, the same effect as the reference example of FIG. 1 can be obtained.

The reference example of FIG. 18 is characterized in that the shaft body 18 used in the previous embodiment is divided into two parts, and is composed of a shaft body lower part 18A and a shaft body upper part 18B. The shaft lower portion 18A includes a cylindrical portion housed in the base portion 1A and a disk-shaped base plate portion having a large outer diameter that is coaxially and integrally formed at the lower end of the cylindrical portion. The base plate portion is disposed along the lower surface of the base portion 1A. The shaft upper portion 18B has a disk shape with a larger diameter than the cylindrical portion of the shaft lower portion 18A, and is coaxially fixed to the upper end of the cylindrical portion of the shaft lower portion 18A. Both are fixed by a pin 130 so that they cannot rotate relative to each other. The outer peripheral part of the shaft body upper part 18B becomes the flange part 64, and is engaged with the step part 66 in the cavity 15 of the base part 1A. Other configurations may be the same as in FIG. In this reference example , when the pan head apparatus is assembled, the shaft body upper portion 18B and the shaft body lower portion 18A may be inserted from above and below the base portion 1A and fixed to each other, so that the assembly is easy.

The reference example of FIG. 19 is characterized in that the base 1A is divided into two parts in the vertical direction, and is composed of a cylindrical base upper part 131 and a disk-shaped base lower part 132 fixed below the base part. The inner diameter of the base upper part 131 is relatively small at the upper part and relatively large at the lower part. The inner diameter of the base lower part 132 is constant and is smaller than the inner diameter of the upper part of the base upper part 131. As a result, an annular recess 133 is formed in the inner wall of the cavity 15 of the base portion 1 </ b> A, and the flange portion 64 of the shaft body 18 is accommodated in the recess 133. The base upper portion 131 and the base lower portion 132 are fixed by a plurality of screws 134 so as to be disassembled.

  According to such a structure, the outer diameter of the flange portion 64 can be made larger than the outer diameter of the lower ball receiver 14, and the width of the engaging surface between the flange portion 64 and the stepped portion 136 can be made larger than in the other embodiments. Largely secured. By enlarging the engagement area, particularly when the operation knob 24 is tightened and the flange portion 64 and the stepped portion 136 are brought into pressure contact with each other, the rigidity of the base portion 1A and the base plate 20 can be increased. Can be suppressed.

The reference example of FIGS. 20 and 21 is characterized in that the frame 16 is divided into left and right parts, each of which is composed of a semicircular arc-shaped frame right part 16A and a frame left part 16B. As shown in FIG. 21, the top right part 16A and the top left part 16B are arranged so as to form an annular shape as a whole. Tapered surfaces 54 and 56 are formed on the top and bottom surfaces of the top right portion 16A and the top left portion 16B, respectively.

  A simple through-hole 140 is formed at the center of the frame top portion 16A, a screw hole 138 is formed at the center of the frame top portion 16B, and a stepped screw 142 is tightened. The stepped screw 142 has a male screw portion 144 and a step portion 146 that is thicker than the male screw portion 144. The male screw part 144 is passed through the through hole 140 of the top right part 16A, and is tightened into the screw hole 138 of the left part 16B. A screw is not formed on the outer periphery of the stepped portion 146, but is passed through a simple hole formed in the base portion 1A. As a result, when the operation knob 24 is tightened, the frame left portion 16B moves to the right and the stepped screw 142 moves to the left, and is pushed by the step portion 146 to move the frame right portion 16A to the left. The amount of movement of the top right part 16A and the top left part 16B is kept symmetrical by the action of the lower ball receiver 14 and the tapered surfaces 52 and 58 of the shaft body 18.

According to reference example of FIG. 20 and FIG. 21, as compared with the case of decentering coma 16 integral, since the contact between the lower ball catcher 14 and the shaft 18 becomes uniform, the frame 16, the lower ball catcher 14, The shaft body 18 has an advantage that uneven wear hardly occurs.

[0047]
Although various embodiments and reference examples have been described above , the present invention is not limited to the above-described embodiments, and any modifications can be made within the scope of the claims. For example, the configurations of the embodiments and the reference examples may be replaced with each other, or may be replaced with or added to other well-known configurations.
[Industrial applicability]

In the pan / tilt head device according to the present invention, the base fixed to a tripod, the lower part of the main body provided with the operation knob, the upper part of the main body having a recess for determining the tilting direction of the support part, and the ball part are independent of each other. Can be rotated. Therefore, even when shooting at an angle in which the neck of the ball portion is tilted into the recess, the operation knob and the support portion can be appropriately separated, and the operation knob is not difficult to operate.
In addition, since an annular elastic body is provided between the lower part of the main body and the base, even when the fastening by the fastening mechanism is released by the operation knob, the rattling between the lower part of the main body and the base and It is possible to prevent rapid rotation and improve the operability of the pan head in a state where the fastening is released.

[0049]
FIG. 1 is a longitudinal sectional view showing a reference example related to a pan head apparatus according to the present invention.
FIG. 2 is a front view of a reference example .
FIG. 3 is a plan view showing an upper plate of a reference example .
FIG. 4 is a side view showing the effect of a reference example .
5 is a longitudinal sectional view showing an essential portion of an embodiment of the camera platform system according to the present invention.
FIG. 6 is a longitudinal sectional view showing a main part of another embodiment of the pan head apparatus according to the present invention.
FIG. 7 is a longitudinal sectional view showing a main part of another embodiment of the pan / tilt head device according to the present invention.
FIG. 8 is a longitudinal sectional view showing a main part of another embodiment of the pan head apparatus according to the present invention.
FIG. 9 is a longitudinal sectional view showing a main part of another embodiment of the pan head apparatus according to the present invention.
FIG. 10 is a longitudinal sectional view showing a main part of another embodiment of the pan head apparatus according to the present invention.
FIG. 11 is a longitudinal sectional view showing a main part of another embodiment of the pan / tilt head device according to the present invention.
FIG. 12 is a longitudinal sectional view showing a main part of another embodiment of the pan / tilt head device according to the present invention.
13 is a plan view of a fastener used in the embodiment of FIG.
FIG. 14 is a longitudinal sectional view showing a main part of another embodiment of the pan / tilt head device according to the present invention.
FIG. 15 is a longitudinal sectional view showing a main part of another reference example related to the pan / tilt head device according to the present invention.
FIG. 16 is a longitudinal sectional view showing a main part of another reference example related to the pan / tilt head device according to the present invention.
FIG. 17 is a longitudinal sectional view showing a main part of another reference example related to the pan / tilt head device according to the present invention.
FIG. 18 is a longitudinal sectional view showing a main part of another reference example related to the pan / tilt head device according to the present invention.
FIG. 19 is a longitudinal sectional view showing a main part of another reference example related to the pan / tilt head device according to the present invention.
FIG. 20 is a longitudinal sectional view showing a main part of another reference example related to the pan / tilt head device according to the present invention.
21 is a partially cutaway plan view of a fastener used in the reference example of FIG.
[Explanation of symbols]

Explanation of symbols

1 Body 2 Ring screw 4 Upper ball holder (Upper part of body)
6 ball 8 neck 10 upper plate (support)
12 Male thread 14 Lower ball receiver 16 Top 18 Shaft body (central axis)
20 Base plate (base)
34, 48 Ball receiving surface 72 Slot (recess)
102, 114 Fastener 106 Operation knob
74, 78, 84, 88 Elastic body

Claims (1)

A spherical ball part (6), a main body (1) that supports the ball part (6) so as to be rotatable and fixable at an arbitrary angle, and a support that is fixed to the ball part (6) and supports the device. Part (10) and base ( 20 ),
The main body (1) includes a lower main body (1A, 2, 14, 16) having at least one of a pair of ball receiving surfaces (48) sandwiching the outer peripheral surface of the ball portion (6); A main body upper part (4) having another one (34) and rotatably attached to the lower part of the main body, and the ball part (6) formed on the main body upper part (4) can be tilted. the recess (72) for said ball receiving surface (34, 48) and fastening mechanism for changing the distance between (14, 16, 22), for operating the fastening mechanism provided on the lower body portion An operation knob (24), and a central shaft (18) that is rotatably provided to the lower portion of the main body and is fixed to the lower portion of the main body at the same time as fixing the ball portion by the fastening mechanism,
The base ( 20 ) is fixed to the central axis (18), and an annular elastic body (74, 78, 84, 88) is disposed between the lower part of the main body and the base (20). pan head and wherein the are.

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