JPH0356720Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Technical Field of the Invention The present invention relates to a pedestal-to-equipment coupling device for removably mounting and fixing various types of equipment on a pedestal.

(b) Background of the Technology Portable equipment, such as optical equipment and electronic equipment that transmits and receives radio waves, is typically installed on a tripod mount at the installation location, mounted on the pedestal of the tripod mount, and then connected and fixed between them.

FIG. 1 is a perspective view of the installed state of the above-mentioned equipment.
In the figure, the tripod frame consists of an upper pedestal 3 and three legs 2 below the pedestal, each of which is extendable and retractable.

The pedestal 3 is composed of a level adjustment mechanism at the bottom, an orientation adjustment mechanism at the middle, and an inclination adjustment mechanism at the top.

The level adjustment mechanism has a downwardly concave spherical seat attached to the upper part of an upwardly convex spherical surface so that it can tilt freely in a sliding state, and when the upper part is adjusted to a horizontal level state, the position can be adjusted using a fixed lever (not shown). Fix it.

The entire upper part of the azimuth adjustment mechanism 4 is horizontally rotatable around a vertical axis, and can be fixed at any position.

The tilt angle adjustment mechanism 5 supports the upper device support member 6 so as to be tiltable in the vertical direction around a horizontal axis, and can be fixed at any position within the movable range. 5a is a support lever for supporting the whole in a stable state by hand when adjusting the azimuth and inclination angle.

A tripod frame is installed to adjust and fix the top surface of the pedestal of the device support member 6 in a horizontal state, and the device 1, which has been separately transported, is mounted and connected thereon by its bottom plate member 7. The mounted equipment 1 can be oriented in a predetermined direction by adjusting the horizontal direction.

The present invention relates to a coupling device for mounting equipment on the pedestal as described above and coupling and fixing the equipment therebetween.

(3) Prior Art and Problems FIG. 2 is a perspective view of the main parts of a conventional coupling device for coupling equipment to the pedestal of a tripod frame. In the same figure,
A fixing plate 8, which is tapered in plan view and has a flat plate shape, is tightly attached to the lower surface of the bottom plate member 7 of the device with machine screws or the like. At the upper part of the support member 6 of the pedestal, there is a tapered recess 10 into which the fixing plate 8 can be fitted.
It is formed into a frame shape.

When the fixing plate 8 is fitted into the tapered recess 10, the lower surface of the bottom plate member 7 is placed on the upper surface of the member 9, and can be moved slightly on this surface. The pressing screw 12 passing through the member 11 is spirally advanced so that its inner tip comes into contact with the end surface of the fixing plate 8, and when it is further advanced, both tapered sides of the fixing plate 8 come into close contact with the inner side of the tapered recess 10. , are strongly connected by the wedge effect.

The pressure screw 12 is turned by rotating it in a vertical plane using a tool such as a spanner at the outer end, so it is necessary to rotate the pressure screw 12 in a manner that avoids the spanner hitting the equipment (not shown) at the top. However, there is a problem that it takes time. In addition, the pressure screw 12
When loosening the screw and removing the device from the pedestal, the tapered portion is stuck together due to the wedge effect, so there is the problem that the device must be strongly pushed toward the pressure screw to release the wedged state of the tapered portion. be.

(d) Purpose of the invention The purpose of the invention is to solve the above conventional problems,
You can connect and disconnect the pedestal and equipment with one touch.
Moreover, it is an object of the present invention to provide a device for connecting a pedestal and equipment, which can provide a strong and stable connection state.

(e) Structure of the invention The gist of the structure of the invention to achieve the above object is that in a coupling device for equipment that is removably mounted on a pedestal, the bottom plate of the equipment is attached to the upper plane of the supporting member of the pedestal. A dovetail groove portion that is tapered in plan view and is provided as a concave portion below the upper plane on which the lower surface of the member is placed, and a dovetail groove portion that is provided on the lower surface of the bottom plate member of the device and has a shape that matches the dovetail groove portion. a tapered fixing plate that is removably wedged in the dovetail groove; and a spring-loaded fixing plate provided at the narrow end of the tapered dovetail groove for pushing back the wedged fixing plate. An extrusion member is provided on the bottom surface of the recess on the open leg side of the dovetail groove, is rotatable in a plane parallel to the bottom surface, and comes into contact with the end surface side of the fixing plate and presses it to wedge into the dovetail groove. interposed between the eccentric cam and the end surface of the fixing plate so that the eccentric cam can pass through the maximum dead center of the eccentric cam in a wedged state with a dovetail groove on the cam contacting surface of the fixing plate; a movable plate biased in a direction away from the end face of the fixed plate by a spring, and the eccentric cam Due to the rotation of the movable plate, the movable plate in contact with the eccentric cam presses the fixed plate by the spring pressure that biases the movable plate, thereby pressing the extrusion member and causing the fixed plate of the device to enter the dovetail groove of the pedestal. The eccentric cam is maintained in a wedged state, and the spring that presses the movable plate is compressed, and the eccentric cam is brought into a non-rotating state in the return direction by the spring force that presses the movable plate at a position where it has passed the maximum dead center. This device is characterized in that the position is fixed by a stopper that positions the lever.

(f) Embodiments of the invention Hereinafter, the invention will be described in detail with reference to illustrated embodiments.

FIG. 3 is a perspective view of a main part of an embodiment of the present invention shown in a separated state, and FIG. In FIG. 3, a dovetail groove member 15 having a tapered shape in plan view is integrally formed on the upper surface of the support member 6, which is a pedestal, by being fixed or cast. The opposing inner wall surfaces of the leg portions of the dovetail groove member 15 are open at the bottom to form a dovetail groove portion 16. 16a is a concave portion, and 16b is a bottom surface of the dovetail groove portion 16.

On the narrow side connecting side wall of the tapered dovetail groove part 16,
A through hole is formed in the center, and a compression spring 18 (FIG. 4) is inserted between the extrusion shaft 17 fitted into the through hole and the head 17a protruding into the recess 16a.
is interposed and energized, and an extrusion shaft 17 is positioned and prevented from coming off by a double nut 19 on the outside.

A shaft 22 is implanted at the end of the bottom surface 16b of the tapered dovetail groove, and a circular eccentric cam 20 having a lever 21 is fitted onto this shaft 22. Eccentric cam 20
The circular center 20a is eccentric from the center of the shaft 22 by n on the Y axis and m on the X axis. This n dimension is a dimension necessary for pressing and wedge-bonding the fixing plate 13, which will be described later, to the dovetail groove portion 16. Ball stoppers 23 and 24 on the left and right sides are embedded in the bottom surface 16b and have a spherical body partially projected onto the bottom surface 16b by means of a spring.

A fixing plate 13 is attached to the lower surface of the bottom plate member 7 of a device (not shown), but this may be integral with the bottom plate member 7. The fixing plate 13 has a tapered shape in plan view, and has a taper that is equal to the taper of the dovetail groove portion 16.
Both side surfaces 13a have trapezoidal slopes that coincide with the dovetail grooves 16.

A screw 14a is attached to the rear end surface 13b of the fixing plate 13.
A predetermined gap is formed between the inner surface of the movable plate 14 and the end surface 13a of the fixed plate 13, and the movable plate 14 is supported by a screw 14a so as to be movable in this gap. . This movable plate 14
is pressed against the head of the screw 14a with a sufficient compressive force by a compression spring 14b (FIG. 4-A) embedded in the fixing plate 13 so as to separate from the end surface 13b.

With the above configuration, the effects are described below.
As shown in FIG. 4-A, by setting the lever 21 to the right side position in the drawing so that the near end bottom dead center B of the eccentric cam 20 faces the push-out shaft 17, the eccentric cam 20 becomes the retracted position, and the recess 16a Fixed plate 1
3 is secured from the top. The right ball stopper 24 fits into a recess (not shown) on the lower surface of the lever 21, and the lever 21
The position of is fixed.

When a device (not shown) is brought from above onto the recess 16a and the lower fixing plate 13 is fitted into the recess 16a, the lower surface of the bottom plate member 7 is placed on the upper surface 15a of the dovetail groove member 15. At this time, the height is set such that the lower surface of the fixing plate 13 does not come into contact with the bottom surface 16b of the recess 16a.

Next, when the lever 21 is pulled out and rotated to the left in the figure around the shaft 22, the eccentric cam 20 rotates and the far end of the cam's outer peripheral surface approaches and contacts the movable plate 14 of the fixed plate 13. As the lever 21 rotates, the fixing plate 13 is advanced in the direction of the extrusion shaft 17, and the fixing plate 1
The front end of 3 contacts the head 17a of the extrusion shaft 17.
The subsequent turning action compresses the compression spring 18 and moves the extrusion shaft 17 backward, but in this process, the compression spring 14b pressing the movable plate 14 is not compressed and the gap is maintained.

Then, the tapered shape of the fixing plate 13 and the tapered shape of the dovetail groove 16 finally match, and when they come into close contact, the fixing plate 13 comes to a stop position so as not to advance any further. As the top dead center T at the farthest end from the center of the shaft 22 approaches the movable plate 14, the eccentric cam 20 compresses the compression spring 14b to reduce the gap since the fixed plate 13 does not move forward. In this way, top dead center T
The state of contact at position T ₁ , slightly passing through the 4th -
This is the state shown in Figure B. That is, at the 180 degree rotation position, the lever 21 comes into contact with the end surface of the left leg of the dovetail member 15 and is prevented from rotating, but just before that, the recess on the lower surface of the lever 21 engages with the ball stopper 23. , the position of the lever 21 is fixed.

As described above, the fixing plate 13 and the dovetail groove member 15
Because of both the wedge effect of the tapered shape in plan view and the wedge effect between the dovetail grooves 16, the device is securely and securely wedged without any play, so that the device is coupled and fixed on the pedestal. Since the eccentric cam 20 has passed the top dead center, it is not rotated in the return direction and is stably positioned.

Removal of the device from the pedestal can be accomplished by reversing the coupling procedure. That is, when the lever 21 is pulled back in _FIG .
As the vehicle moves to , the compression spring 14b can be compressed and the vehicle can pass through the top dead center T. As the lever 21 rotates, the movable plate 14 is pushed out and the screw 1
4a, and the gap between it and the end surface 13b of the fixing plate 13 is maximized.

When the extrusion shaft 17 rotates further than this, the extrusion shaft 17 moves forward due to the restoring force of the compression spring 18, and the fixing plate 13 wedged on the dovetail groove member 15 retreats. By setting the lever 21 to the right position in Figure 4-A, the push-out shaft 17 advances to the position determined by the nut 19, which pushes the fixing plate 13 back to a position sufficient to pull it up from the recess 16a, making it easy to remove the device. Can be removed.

The coupling device of the present invention can be applied not only to tripod frames but also to fixedly installed bases and other frame bases. Further, the eccentric cam does not need to have a circular outer shape, and may be any suitable curved cam having a required amount of eccentricity. If a ball bearing or the like is used on the circumferential surface of the cam, sliding friction can be eliminated and rotational operation can be performed extremely smoothly.

(g) Effects of the invention As detailed above, in this invention, the lever rotates in a horizontal plane, so it is not affected by equipment above, and it uses the lever action using the rotation axis of the eccentric cam as a fulcrum. Since it is connected and fixed, there is no need for strong force on the lever, and it can be operated with one touch. Since the supporting member and the fixing plate are tapered dovetail joints, horizontal and
The position is fixed in both vertical directions by a wedge effect.

In this way, in addition to pressing and rotating the eccentric cam after it is fixed in a stable position, a spring-loaded movable plate is used to prevent the eccentric cam from rotating in the return direction when it passes the top dead center. Pressing the fixing plate through allows smooth rotation of the eccentric cam. Furthermore, it is a practical and highly effective coupling device that allows the device to be easily removed from the pedestal.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the installed state of the device and the tripod mount, Fig. 2 is a perspective view of the main parts of a conventional coupling device for coupling and fixing the device to the pedestal of the tripod mount, and Fig. 3 is a main part of the coupling device of the present invention. Part perspective view, Figure 4-A is a fitted state before joining, and Figure 4-A is a plan view of the joined and fixed state, respectively.
shows. In the figure, 1 is the device, 2 is the leg, 3 is the pedestal, 4 is the orientation adjustment mechanism, 5 is the tilt angle adjustment mechanism, 6 is the device support member, 7 is the bottom plate member, 8 and 13 are the fixing plates, and 12 is the press screw. , 14b, 18 are compression springs, 15 is a dovetail member, 16 is a dovetail groove, 17 is an extrusion shaft, 20 is an eccentric cam, 21 is a lever, and 22 is a shaft.

Claims (1)

[Claims for Utility Model Registration] In a coupling device for equipment that is removably mounted and coupled to a pedestal, the lower surface of the bottom plate member 7 of the equipment is placed in contact with the upper plane 15a of the support member 6 of the pedestal. A dovetail groove 16 that is tapered in plan view and is provided as a recess 16b below the upper plane; and a dovetail groove 16 that is provided on the lower surface of the bottom plate member 7 of the device and has a shape that matches the dovetail groove 16, and is removable within the dovetail groove. a tapered fixing plate 13 wedged to the tapered dovetail groove 16; a spring-loaded push-out member 17 provided at the narrow end of the tapered dovetail groove 16 for pushing back the wedged fixing plate 13; Bottom surface 1 of the recess 16a on the open leg side of the dovetail groove 16
an eccentric cam 20 which is provided on 6b and has a lever 21 that is rotatable in a plane parallel to the bottom surface and that comes into contact with the end surface side of the fixing plate 13 to press it and wedge it in the dovetail groove 16; The fixing plate is connected to the cam contact surface of the fixing plate by a spring interposed between the eccentric cam 20 and the end surface of the fixing plate so that the eccentric cam 20 can pass through the maximum dead center in a state of wedge contact with the dovetail groove 16. a movable plate 14 that is biased in a direction away from the end surface of the eccentric cam 20, and the lower surface of the bottom plate member 7 of the device is placed in contact with the upper surface 15a of the pedestal.
The movable plate 14 that comes into contact with the eccentric cam due to the rotation of the fixed plate 1 is moved by the spring pressure that biases the movable plate 14
By pressing 3, the extrusion member 17 is pressed, and the fixed plate 13 of the device is maintained in a wedged state within the dovetail groove 16 of the base, and the spring that presses the movable plate is compressed, and the eccentric cam is compressed. 20 is positioned in a non-rotatable state in the return direction by a spring force that presses the movable plate 14 at a position passing the maximum dead center, and is fixed in position by a stopper 23 that positions the lever 21. A device for connecting a pedestal and equipment.