JPH0316487Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a string tightener for string ties, etc., and a collar adjustment device for a drawstring that also serves as a collar for pets such as dogs (hereinafter collectively referred to as a string tightener). It is related to.

[Prior Art] A string tightening device includes a hollow main body having a drawer opening for a double-folded portion of the string (hereinafter referred to as the ring portion) at one end and a drawer opening for both free ends of the string (hereinafter referred to as both ends) at the other end; The string biting member is loaded into the main body, and the left and right side walls are tapered to widen inward from the ring drawer opening of the main body, and the string biting member has both string drawer openings formed on one side of the main body. There is a type that has a shaft that passes through a long hole in the direction of
No. 7267, Jitko No. 59-42867).

[Problem that the invention attempts to solve]

In the above-mentioned conventional string tightening tool, the string is folded in half, and the ring portions are inserted through the drawer openings at both ends of the string and pulled out from the drawer holes of the string, and the ring portions are tightened to release the string biting member. The ring part of the string is moved to the drawer opening side and bitten by the string to prevent the ring part of the string from loosening, but if both free ends of the string are loosened, there is a risk that the biting of the string biting member may loosen. be.

The reason for this is that the left and right side walls of the main body are tapered to widen inward from the string ring drawer opening.

This idea is an attempt to solve the above problem, and its purpose is to prevent the string from being caught even though the left and right side walls of the main body are tapered to widen inward from the string drawer opening. The fasteners should be such that there is no risk of them becoming loose.

[Means for Solving the Problems] In order to solve the above problems, this invention proposes that a long hole formed on one side of the main body of the string fastener reaches the pull-out openings at both free ends of the string, and a part in the middle of the long hole. is provided with a notch that intersects with this elongated hole, and on the back side of the string biting member is provided with a shaft protruding from both free ends of the string facing toward the drawer opening. Fit into the elongated hole and load it into the main body, fit one end of the coil spring to the back shaft, and load plugs into the drawer openings at both free ends of the string to form a clearance for drawing out the string on both the left and right sides. At the same time, a detent claw protruding from the top of the stopper is engaged with a notch intersecting the elongated hole of the main body to prevent the stopper from coming out, and the other end of the coil spring is received as a string fastener. .

[Effect]

When the operation button that had been retracting the string biting member is released while the ring part of the string pulled out from the main body of the string tightener is tightened, the string biting member pulls out the string ring part with the restoring elasticity of the coil spring. Move to the side and bite the ring part of the string inside the drawer opening.

〔Example〕

Fig. 1 is an exploded perspective view of an example of the strap fastener according to the present invention, Fig. 3 is an assembled view thereof, and 1 is the main body;
Reference numeral 2 denotes a string biting member that is loaded into one end of the main body 1, and 3 is a stopper that is inserted into the other end of the main body 1.

The main body 1 is the second part which is a plan view of the assembled string fastener.
As shown in FIG. 1 and FIG. 4, which is a top view in cross section of the main body 1 only, and FIG. It is a hollow body with a draw-out port 8 for both free ends 7a, 7b of the string 4 at its ends, and a ring-part draw-out port 6 for the string.
On the inside, both left and right walls 9a and 9b are tapered to widen inward.

When the string biting member 2 moves to the side of the string ring drawer opening 6, it pushes both string parts of the ring part 5 from the drawer opening 6 to the mouth wall and bites, and is dimensioned to prevent the string from slipping out from the drawer opening 6. There is.

A long hole 10 is formed in the upper surface of the main body 1 in the direction of both string drawer openings 6 and 8, and a notch 11 is provided in the middle of the long hole to intersect the long hole at right angles. The hole 10 is open to reach the outlet of both free ends of the string.

A shaft 12 that passes through a long hole 10 stands up on the top surface of the string biting member 2, and an operating button 13 is fixed to the tip of the shaft 12.

Further, on the back side of the string biting member 2, there is provided a shaft rod 14 projecting from both free ends of the string toward the pull-out port 8, and one end of a coil spring 15 is fitted and supported on this shaft rod.

The width of the stopper 3 is such that it can form a clearance for pulling out the string on both left and right sides within the width of the string drawer opening 8, and a top plate 16 having a width larger than the width of the stopper is provided at the top of the stopper 3. Furthermore, a detent pawl 18 is connected to the inner end of the top plate, with a slit 17 interposed between it and the stopper 3, which fits into the notch 11 on the top surface of the main body 1. 19 is a concave portion formed in the plug 3 to receive the other end of the coil spring 15, and 20 is a protrusion that fits into the elongated hole 10 to stabilize the plug 3.

Further, in FIG. 4, reference numeral 21 denotes concave surfaces on both sides of the elongated hole 10 in the main body 1, reaching the notch 11, and forming guides with which the tips of the claws 18 come into contact. In FIG. 4, 22 indicates a recess formed on the inner surface of the bottom plate of the main body 1, into which the plug 3 is fitted.

In the figure, 23 is the left and right side walls 9a of the hollow part of the main body 1,
These are the unevenness formed on the string 9b to strengthen the biting of the string 4, and similar unevenness 24 is also formed on both left and right side surfaces of the string biting member 2.

This string tightener passes a string 4 which has been folded in half into the main body 1 from both free ends of the string from the drawer opening 8 side, as shown in FIG. Fit and load the string in order from the string drawer opening 8, and with the ring part 5 of the string hanging over the object, hold both free ends of the string pulled out from the main body 1, and move the main body 1 to the ring part 5 side and tighten it. With the help of the coil spring 15, the string biting member 2 always maintains its resilience in the forward direction, so that the biting state does not loosen.

If it is desired to loosen the ring part 5, the operator operates the operation button 13 to forcibly retract the string-engaging member 2.

〔effect〕

The strap tightening device of this invention has the following effects.

(1) Since the string biting member always has the ability to return to the ring part drawer opening side of the string, there is no risk of the biting becoming loose even if the draw string side becomes loose.

(2) Since the hollow main body has the drawer openings at both free ends of the string fully open, the main body can be obtained by integral molding, thereby reducing the molding cost.

(3) In the drawer openings at both free ends of the main body, plugs capable of forming a clearance for pulling out the string on both the left and right sides are loaded, and the detent claws protruding from the top of the plugs are inserted into the elongated holes on the top of the main body. Since it can be locked in the notch to prevent it from coming out, the string fastening tool is easy to assemble, and the rear end of the coil spring that restores the string biting member to the drawer opening side of the string ring part can be received by the plug. I can do it.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of an example of the strap fastener according to the present invention, Fig. 2 is a plan view of the same in an assembled state, Fig. 3 is a sectional view taken along the line shown in Fig. 2, and Figs. 4 are 1 and 2.
is a cross-sectional view showing only the top and bottom sides of the main body. 1... Main body, 2... String biting member, 3... Plug,
6...Bifold part (ring part 5) drawer opening of string 4, 8
...Free ends 7a, 7b of the string, drawer openings 9a, 9
b...Tapered wall, 10...Long hole, 11...Notch, 12...Shaft, 13...Operation button, 14...
...Axis rod, 15...Coil spring, 18...Detent claw.

Claims (1)

[Scope of utility model registration request] It consists of a hollow main body having a drawer opening for the double-folded part of the string at one end and a drawer opening for the two free ends of the string at the other end, and a string biting member loaded into the main body, Inside from the drawer opening, the left and right side walls are tapered to widen in depth, and the string-engaging member is equipped with a shaft that passes through long holes in the direction of both string drawer mouths formed on one side of the main body, and an operation button is provided at the tip of the shaft. In the string fastening device, the long hole on one side of the main body reaches the drawer openings at both free ends of the string, and has a notch in the middle of the long hole that intersects with the long hole, and a string is provided on the back side of the string biting member. A string biting member is provided with a shaft protruding from both free ends facing toward the drawer opening, and the shaft at the top is fitted into the elongated hole of the main body and loaded into the main body, and one end of the coil spring is attached to the shaft on the back side. A stopper that can form a clearance for pulling out the string on both the left and right sides is loaded into the drawer opening at both free ends of the string, and a detent claw protruding from the top of the stopper is inserted into the notch intersecting the elongated hole of the main body. A string fastener characterized by being locked to prevent it from coming off and receiving the other end of the coil spring.