JPH066736Y2 - Strap attachment / detachment device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a strap attaching / detaching device for attaching / detaching a strap to / from a carried article.

"Prior Art and Its Problems" A large number of strap attaching / detaching devices of this type have been proposed and put into practical use. In all of these, basically, a strap hooking protrusion such as a hanging ring is provided on the carried item side, and the attaching / detaching tool at the end of the strap is hooked on the hooking protrusion. However, such a conventional strap attaching / detaching structure has a problem in that the hooking protrusions that are always present on the carried item side are an obstacle. Especially for box-shaped carry-on items,
Sometimes only the latching protrusions project, which is why
In the manufacturing process, it may be difficult to arrange or stack a large number of these in the vertical and horizontal directions, or in the manufacturing process, the hooking protrusion may interfere with the surroundings. This is
The same can be said when the user removes the strap and stores the carried item, which leads to a problem that a large storage space is required.

[Object of the Invention] The present invention has an object to obtain a strap attaching / detaching device which does not require a locking projection on the carried item side, based on the above-mentioned awareness of the problems of the conventional strap attaching / detaching device.

It is another object of the present invention to provide a device in which the strap can be easily attached and detached and is not accidentally dropped.

[Outline of the Invention] The present invention embeds a strap hooking device provided on the carried item side in the carried item, and by attaching and detaching the strap to and from the embedded member, the carrying item side hooking device is provided. It was completed based on the idea that it will not get in the way, and that the strap will not accidentally drop if the strap is attached and removed by rotating the shaft. .

That is, the strap attaching / detaching device of the present invention comprises an embedding tubular member that is embedded and fixed in a carried article; and an attaching / detaching member that is detachably attached to the embedding tubular member. It has an annular groove on its inner surface. On the other hand, the detachable member is
A tubular portion that fits into the embedded tubular member; a plurality of ball projecting holes formed in the peripheral surface of the tubular portion that are axially aligned with the annular groove of the embedded tubular portion; A plurality of balls fitted in the ball projecting holes of the same so as to be able to move forward and backward so as not to come out to the outside; an operation shaft fitted rotatably in the cylindrical portion; Provided are an outer peripheral lock surface for projecting the ball from the ball projecting hole, and a circumferential taper surface for retracting; a biasing means for normally biasing the operating shaft in a direction in which the outer peripheral lock surface contacts the ball. A rotating operation part for rotating the operation shaft and engaging the circumferential tapered surface with the ball; and a strap supporter supported by the tubular part.

"Embodiment of the Invention" The present invention will be described below with reference to illustrated embodiments. Items to carry 1
1 includes an embedded tubular member 10 as a strap hooking tool.
Is embedded and fixed. The embedded tubular member 10 has a flange 14 at the outer end of the tubular portion 13, and only the flange 14 is exposed to the outside of the carried article 11.
It is embedded and fixed in the carried article 11. 15 is the tubular portion 1
3 is a fixing screw formed on the outer surface of 3. The flange 14 may also be embedded in the carried article 11 so that the surface of the flange 14 and the surface of the carried article 11 are flush. An annular groove 16 having a semicircular cross-section is formed on the inner surface of the tubular member 13.

The detachable member 20 that is detachably attached to the embedded tubular member 10 is
It has a tubular portion 21 that is inserted into the tubular portion 13, and the operation shaft 22 is rotatably fitted in the tubular portion 21 so as not to come off. An operating knob 23 is integrally provided at a protruding end of the operating shaft 22 from the tubular portion 21.
3, a coin groove 35 is formed in the radial direction. Further, one end of a strap support tool 25 that supports the strap S is rotatably fitted in the tubular portion 21. The strap supporting portion 25 is provided with a protective cylindrical portion 31 that covers the outer peripheral portion of the operation knob 23.

A plurality of, preferably three or more ball projecting holes 26 are formed on the peripheral surface of the tubular portion 21. The ball projection hole 26 has the tubular portion 21 embedded therein and the tubular portion 1 of the tubular member 10.
It is provided at an axial position which is aligned with the annular groove 16 when fully inserted into the No. 3 slot. The ball projecting hole 26 has a shape in which the outer side in the radial direction is narrowed,
The ball 27 fitted in this does not come out. Ball 2
The diameter of 7 is set to be substantially the same as the diameter of the annular groove 16.

The operating shaft 22 is biased in the rotational direction by a torsion coil spring 22b interposed between the bottom of the tubular portion 21 and the tip of the operating shaft 22, and the biasing direction and the opposite direction. The rotation end of is regulated by a rotation range regulation groove 33 formed on the operation shaft 22 and a rotation range regulation projection 34 formed by plastically deforming the tubular portion 21. The operation shaft 22 is prevented from coming off from the tubular portion 21 by the projection 34. An outer peripheral lock surface 30b and a peripheral taper surface 28b are formed on the peripheral surface of the operation shaft 22, and the outer peripheral lock surface 30b and the peripheral taper surface 2 are formed.
8b disengages with the ball 27. Torsion coil spring 2
The urging direction by 2b is the outer peripheral lock surface 30 of the operating shaft 22.
b is the direction in which the ball 27 is pushed outward from the ball projecting hole 26.

In the present apparatus having the above-described configuration, the operation shaft 22 is positioned at one rotation end by the force of the torsion coil spring 22b in a state in which the rotation operation force is not applied to the operation shaft 22.
The outer peripheral lock surface 30b of the second ball 2 is used to insert the ball 27 into the ball projecting hole 2
6 is pushed out and fitted into the annular groove 16 of the embedded tubular member 10.

On the other hand, when the operation shaft 22 is rotated against the biasing force of the torsion coil spring 22b using the coil groove 35, the ball 27 comes into contact with the tapered surface 28b, and as a result, the ball 27 is made to protrude from the ball protruding hole 26. The force that has been projected outward from is lost. Therefore, the embedded tubular member 10 can be freely inserted into and removed from the removable member 20.

Then, in this device, the detachable member 20 can be attached to and detached from the embedded tubular member 10 only by rotating the operation shaft 22. The rotating operation of the shaft is an operation that does not occur unless it is performed with the intention of rotating the shaft. Therefore, there is no risk that the detachable member will accidentally fall off. This is clear as compared with the case where the attaching / detaching member is attached / detached by, for example, a pressing operation or a drawing operation of the shaft. The pressing operation can be caused by the foreign matter hitting, and the pulling-out operation can be easily caused by the foreign matter being caught on the head of the shaft. On the other hand, in the present invention in which the detachable member is disengaged by the rotating operation of the operation shaft, there is no risk of such an inadvertent disengagement operation. Further, in this embodiment, since the outer circumference of the operation knob 23 of the operation shaft 22 is covered with the protective tubular portion 31, there is no risk of erroneous operation.

“Effect of device” As described above, according to the strap attaching / detaching device of the present invention,
Since the hook on the side of the carried item is composed of an embedded tubular member that is embedded and fixed in the carried item, it does not project,
Therefore, the latch does not interfere with the production of the carried item or the storage thereof. The strap-side attaching / detaching member and the embedding member are integrated by the fitting relationship between the ball and the annular groove into which the ball fits. Can be done quickly. Further, the operating member of the present invention allows the detachable member to be detached by a rotating operation, and since the rotating operation is less likely to cause a malfunction than the pressing operation or the pulling operation, the operating member is inadvertently attached or detached. It is possible to eliminate the risk of the member falling off.

[Brief description of drawings]

1 to 3 show an embodiment of a strap attaching / detaching device according to the present invention. FIG. 1 is a longitudinal sectional view in a worn state, and FIGS. 2 and 3 are respectively A of FIG. FIG. 4 is a cross-sectional view of a mounted state and a detachable state, taken along line A-. 10 ... Embedded tubular member, 11 ... Carried item, 13 ... Cylindrical part, 14 ... Flange, 16 ... Annular groove, 20 ... Removable member, 21 ... Cylindrical part, 22 ... Cylindrical part, 23 ... Operation knob, 22b ... Torsion coil spring, 25 ... Strap support, 26 ... Ball projecting hole, 27 ... Ball, 28b ... Circumferential taper surface, 30b ... Outer peripheral lock surface , S ... Strap.

Claims (2)

[Scope of utility model registration request] 1. An embedding tubular member for embedding and fixing a carried article; and a detachable member that is detachably attached to the embedding tubular member, wherein the embedding tubular member has an annular groove on its inner surface. The embedding member has a tubular portion that fits into the embedding tubular member; and a plurality of annular grooves formed on the peripheral surface of the tubular portion, the axial positions of which match the annular groove of the embedding tubular portion. A plurality of ball projecting holes; a plurality of balls fitted in the plurality of ball projecting holes so as to be able to move forward and backward so as not to come out to the outside; an operation shaft rotatably fitted in the cylindrical portion; An outer peripheral lock surface that is provided at different circumferential positions to project the ball from the ball projecting hole, and a circumferential taper surface that retracts the ball; the operation shaft is normally rotated in the direction in which the outer peripheral lock surface contacts the ball. Urging means for urging dynamically; rotating the operation shaft to move the circumferential taper surface A pivot operation part engaged with the Lumpur; supported on the cylindrical portion, and the strap support; strap attachment apparatus characterized by having a. 2. The strap attachment / detachment device according to claim 1, wherein the outer periphery of the operation portion of the operation shaft is covered by a protective cylindrical portion provided on a strap support.