JP3157268B2 - Belt hook device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt hook device, and more particularly to a one-touch detachable belt hook device for a shoulder belt used for a measuring instrument, a camera, a video camera or the like.

[0002]

2. Description of the Related Art As shown in FIG. 6, a belt hook device conventionally used for a measuring instrument or the like has a mounting member 42 made of a ring-shaped spring material attached to a belt B, and the mounting member 42 and a round groove are attached. The attachment 43 was detached. That is,
The round grooved fitting 43 is a disc-shaped base 4 to be attached to a measuring instrument or the like.
4 and a disc-shaped locking portion 46 are integrally formed above the base portion 44 via an annular groove portion 45, and are fixed to a surveying instrument or the like using a mounting screw (not shown) in a mounting hole 47. You. The mounting bracket 42 has a ring-shaped tip 41 slightly larger than the groove 45 and a belt B side larger than the locking portion 46, and is connected to the belt B. When the mounting bracket 42 is to be attached, the belt B side portion of the mounting bracket 42 is inserted into the groove 45 of the round grooved bracket 43, and the round grooved bracket 43 is inserted into the distal end 41 of the mounting bracket 42.
Was to be located.

[0003]

In the above-mentioned prior art, when the object to be conveyed such as a measuring instrument is heavy, a ring-shaped mounting bracket 4 is required.
In No. 2, there is a problem in strength, and since the mounting bracket 42 itself is formed of a spring material, there is a variation in processing accuracy, and there is a problem that the mounting bracket 42 easily comes off from the round grooved bracket 43. . In particular, in order to prevent the measuring instrument or the like from abutting against the mounting bracket 42 in the measuring instrument, FIG.
When the side protector 48 or the like as shown in the above is disposed on the measuring instrument side, there is a problem that a range in which the belt B does not rotate is restricted by the wall of the side protector 48. If the mounting bracket 42 is formed with a bend to escape from the wall of the side protector 48 in order to prevent this and ensure rotation of the mounting bracket 42, a problem arises in that the sense of instability in the mounting section increases. .

An object of the present invention is to provide a belt hook device detachably attached to a round grooved metal fitting, which has sufficient strength as a belt hook device such as a surveying instrument, and is small in size and can be attached and detached with one touch. Can be prevented from falling off,
Another object of the present invention is to provide a belt hook device configured to be rotatable. Another object of the present invention is to provide a belt hook device which can be used as it is without any change to a round grooved metal fitting conventionally used for a mounting body such as a surveying instrument.

[0005]

A belt hook device according to the present invention has a round grooved metal fitting in which a base attached to an attachment body and a disk-shaped locking portion are integrally formed via an annular groove. In a belt hook device which detachably engages, the belt hook device has a stopper portion disposed between a pedestal and a guide portion, and the pedestal has a belt mounting hole and a stopper A sliding space portion is formed, the guide portion includes a U-shaped locking portion having an inner space slightly larger than the width of the groove portion and the locking portion of the round grooved metal fitting, and a through hole; The stopper is formed by integrally attaching a stopper to a leaf spring and arranging hooks at both ends of the leaf spring. The stopper is slidably disposed in a through hole of the guide and in the sliding space. The stopper is provided so that the leaf spring is flexible. Consisting retractable so formed configuration to Gaito portion by. A sliding space for each of the hooks and a locking portion are formed in at least one of the pedestal and the guide portion, and the leaf spring is configured to be flexible by both the hooks. Further, it is preferable to form a tapered portion inside the free end of the U-shaped locking portion of the guide portion.

[0006]

An embodiment of the present invention will be described below with reference to the drawings. The members, arrangements, and the like described below do not limit the present invention, and can be variously modified within the scope of the present invention.

FIGS. 1 to 4 show an embodiment of the present invention, in which a belt hook device S is removably attached to a round grooved metal fitting. The round-shaped grooved fitting of this example is the same as that used in the prior art, and is composed of a base 44, a groove 45, and a locking part 46, as shown in FIG.
The base portion 44 and the disc-shaped locking portion 46 are integrally formed via an annular groove portion 45. A mounting hole 47 is formed in the round grooved metal fitting 43 so as to penetrate from the upper surface of the locking portion 46 to the back surface of the base portion 44. Attached to the side of a surveying instrument.

[0008] The belt hook device S of the present embodiment mainly includes the pedestal 1, the guide portion 2, and the stopper portion 3. As shown in FIG. 1, the stopper portion 3 of the present embodiment includes a stopper 31, a leaf spring 32, and hooks 33, 33.
The stopper 31 of this example is formed of a cylindrical rod, and the end on the guide portion 2 side is an inclined surface 31a.
Is formed. The leaf spring 32 of this example is a rectangular thin plate that can be easily flexed, and is slightly inclined from both sides in the longitudinal direction of the leaf spring 32 to the center position side, and the urging force of the leaf spring 32 and It is formed such that the deflection is in one direction. As shown in FIGS. 1 and 2, the hook 33 of the present embodiment includes an attachment recess 33 a integrally attached to the leaf spring 32 and a pressing surface 33 b from the outside. A stopper 31 is provided at a substantially central position of the leaf spring 32.
Hooks 33, 33 are integrally attached to both ends of the leaf spring 32. The stopper 31
The leaf spring 32 and the leaf spring 32 are integrally attached to each other so that the inclined surface 31a of the stopper 31 is perpendicular to the longitudinal direction of the leaf spring 32 by an E-ring, screwing, welding, or other fixing means.

The pedestal 1 of this embodiment is connected to a guide portion 2 to be described later, and includes a belt mounting hole 11 and a stopper 3.
1, a cylindrical concave portion 12 which is a sliding space portion;
And a flexible space portion 14 of the leaf spring 32. That is, the pedestal 1 is formed to have a predetermined thickness, and a belt mounting hole 11 is formed at one end side to be slightly larger than the width and thickness of the belt B as shown in FIG. A flexible space 14 defined by a wall surface 14a and a bottom surface 14b of a leaf spring 32, and a wall surface continuous with the bottom surface 14b constituting the flexible space portion 14 are provided on the joint surface side of the pedestal 1 with the guide portion 2. Are formed on both sides of the bottom surface 14b. In addition, the locking portion 13 of the present example prevents the movement of the hook 33, and forms the concave portion 15 where the hook 33 is disposed. Reference numeral 16 shown in FIG. 1 is a mounting hole for connecting to the guide portion 2, and the mounting hole 16 is a screw hole.

The guide portion 2 of this embodiment has a U-shaped notch 21 having inner spaces 25a and 25b slightly larger than the width of the groove portion 45 and the locking portion 46 of the round grooved metal fitting 43, respectively.
It has a through hole 22 and a concave portion 23 serving as a space for disposing the hook 33. The through hole 22 is formed at the entrance of the U-shaped notch 21, and a tapered portion 24 inclined inward is formed inside the free end of the U-shaped notch 21.
The concave portion 23 is formed on the pedestal 1 side of the guide portion 2 at a position aligned with the concave portion 15 of the pedestal 1. Reference numeral 26 in FIG. 1 denotes a mounting hole for connecting to the pedestal 1, and reference numeral 27 denotes a mounting screw.

The belt hook device S having the above construction is assembled so that the stopper 1 is sandwiched between the pedestal 1 and the guide portion 2. First, as shown in FIG. Place. At this time, the stopper 3
One end is inserted into the cylindrical concave portion 12 and the hook 33 is positioned in the concave portion 15, but the inclined surface 31a of the stopper 31 is disposed toward the belt insertion hole 11 side. Next, guide part 2
The stopper 31 is inserted into the through hole 22 from the inclined surface 31a side, the hook 33 is positioned in the concave portion 23, and the guide portion 2 is assembled from above the stopper portion 31. Then, it is screwed into the screw holes of the mounting holes 26 and 16 by the mounting screw 27 and assembled.

Next, the belt hook device S having the above configuration
The attachment / detachment between and the round grooved metal fitting 43 will be described. Normally, as shown in FIGS. 2 and 4, the stopper 31 is urged toward the guide portion 2 by the leaf spring 32, and the stopper 31 pops out of the through hole 22 to cut the inclined surface 31 a into the notch 21.
Of the U-shaped automatic end. In this state, if the groove portion 45 of the round grooved metal fitting 43 is positioned between the free ends of the U-shaped notch 21 of the guide portion 2 so as to be positioned, the locking portion 46 of the round grooved metal ring 43 and The inclined surface 31 a of the stopper 31 comes into contact with the stopper 31, and the stopper 31 is pushed down against the urging force of the leaf spring 32, so that the locking portion 46 of the round grooved metal fitting 43 can be easily moved into the notch 21.
When the locking portion 46 of the round grooved metal fitting 43 is located in the notch 21, the stopper 31 projects by the urging force of the leaf spring 32, and prevents the locking portion 46 of the round grooved metal fitting 43 from coming off.
Further, inside the free end of the notch 21, a tapered portion 24 is provided.
Is formed, the locking portion 46 of the round grooved metal fitting 43 is formed.
Can be smoothly guided by the tapered portion 24.
As described above, the mounting can be performed with one touch by the inclined surface 31a of the stopper 31, the tapered portion 24 of the guide portion 2, and the like.

Next, when removing from the round grooved metal fitting 43, the pressing surfaces 33b of the hooks 33, 33 on both sides of the stopper portion 2 are pressed from both sides, so that the leaf spring 32 bends in the flexible space portion 14, and 31 is slid toward the pedestal 1 in the cylindrical recess 12 which is a sliding space of the pedestal 1,
1 can be easily removed by retracting the guide hook 2 from the notch 21 side of the guide 2 and moving the belt hook device S in the opposite direction to the above.

That is, as shown in FIGS. 2 and 3, when the hook 33 is pushed, the hook 33 is linearly slid until it is restrained by the recesses 15 and 23 and abuts on the locking portion 13.
The leaf spring 32 is deformed while generating stress at the X and Y portions. Since the leaf spring 32 is formed to be slightly inclined toward the center position, the Y portion moves toward the cylindrical concave portion 12 and the stopper 31 fixed to the leaf spring 31
It slides in the cylindrical concave portion 12 by an amount equivalent to the moving amount of the portion.
In FIG. 3, the lower side is the guide portion.

At this time, in the natural state, the angle .theta.
3 is surrounded by the concave portions 15 and 23 so that the movement of the plate spring 3 does not meander sideways. When only the hook 33 on one side is pushed by a force less than the elastic force of the leaf spring 31 bending between X and Y, the stopper 33 is moved.
Does not slide. Therefore, even if a force from one side is applied to the leaf spring 32, a force is applied perpendicularly to the stopper 31 from only one side in the shear direction, and the stopper 31 does not operate. Therefore, only when the leaf spring 32 is pressed from both ends, that is, when the hook 33 is pressed from both sides, the stopper 31 can be retracted from the notch 21 side, and the hook 3
3 can prevent an unexpected release operation from one side, for example, an unexpected release due to an unexpected operation or an erroneous operation.

According to the above example, the strength is sufficient to hold 7 to 10 kg, and the pedestal 1 is generally located above the locking portion 46, so that the belt mounting hole 11 for mounting the belt B is not required. It is arranged at a position above the locking portion 46 of the round grooved metal fitting 43 and can be configured to be rotatable. This is particularly effective when there is a projection around the round grooved metal fitting 43 or around the belt hook device S. Further, since the guide portion 2 and the pedestal 1 are connected and can be attached to and detached from the round grooved metal fitting 43 at the guide portion 2, when the belt hook device S is attached, the round grooved metal fitting 43 cannot be seen from the outside. it can.

[0017]

As described above, according to the belt hook device of the present invention, the belt hook device has sufficient strength as a belt hook device of a surveying instrument, etc., and can be easily attached and detached with a single touch, and the presence or absence of a side protector or the like. However, it can be configured to rotate. Furthermore, the round grooved metal fitting used for the mounting body such as a surveying instrument can be used without any change.
Also, the release operation can be performed only when the leaf spring is pressed from only both ends by both hooks, and an unexpected release operation from one side of the hook can be prevented.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an explanatory diagram showing an operation of a stopper.

FIG. 4 is a perspective view showing one embodiment of the present invention.

FIG. 5 is a side view showing a state where a side protector is attached to a round grooved metal fitting.

FIG. 6 is an explanatory diagram of a conventional belt hook device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pedestal 2 Guide part 3 Stopper part 11 Belt insertion hole 12 Sliding space part (cylindrical concave part) 13 Lock part 14 Flexible space part 15 Concave part 21 Notch part 22 Through-hole 23 Concave part 24 Tapered part 31 Stopper 31a Slope 32 leaf spring 33 hook 43 round grooved fitting 44 base 45 groove 46 locking part S belt hook device

Claims (3)

(57) [Claims] 1. A belt hook device in which a base attached to an attachment body and a disk-shaped locking portion are detachably engaged with a round grooved metal fitting integrally formed through an annular groove. In the belt hook device, a stopper portion is disposed between a pedestal and a guide portion, wherein the pedestal is formed with a belt mounting hole and a sliding space portion for the stopper, and the guide portion is The U-shaped locking portion having an inner space slightly larger than the width of the groove portion and the locking portion of the round grooved metal fitting, and a through-hole are provided, and the stopper is integrally attached to a leaf spring with a stopper. And hooks are disposed at both ends of the leaf spring, the stopper is slidably disposed in the through hole of the guide portion and the sliding space, and the stopper is a flexible leaf spring. A base that is formed so that it can Luto hook device. 2. A sliding space for each of said hooks and a locking portion are formed in at least one of said pedestal and said guide portion, and said both hooks make a leaf spring flexible.
A belt hook device as described. 3. The belt hook device according to claim 1, wherein a tapered portion is formed inside the free end of the U-shaped locking portion of the guide portion.