JPH0721481Y2 - Winding device for flexible covered electric wire - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-winding type winding device capable of continuously changing the payout length of a flexible covered electric wire used for a biostimulation conductor or the like by a low frequency pulse.

[0002]

2. Description of the Related Art As a winding device of this type, for example, there has been a winding device for a cuff hose of a blood pressure monitor described in Japanese Utility Model Laid-Open No. 3-5404. This conventional technique is provided between a sphygmomanometer body, a cuff wrapped around a part of a living body, and the sphygmomanometer body and the cuff, and supplies a pressure fluid from a pressure fluid supply source to the inside of the cuff. A blood pressure monitor of the type including a cuff hose, wherein a winder for winding the cuff hose is provided in the main body of the blood pressure monitor.

[0003]

In addition to the problem that the above-mentioned conventional technique can be used for a cuff hose, it cannot be used for winding a flexible electric wire for transmitting / receiving a low frequency pulse because it has no current collector. Since the ratchet gear is used as a one-way clutch, the hose's payout noise is large and the hook length is large, and the payout length is determined by the pinch dimension of the ratchet teeth. Analog feeding is not possible, and because the winding drum itself is drum-shaped, the hose becomes a messy winding,
There is a problem that the cuff hose or the like has a twisting tendency and cannot be flattened.

In order to eliminate the above-mentioned problems, the present invention realizes continuous winding and unwinding of electric wires by using an analog control type one-way clutch using a roller with a cam groove. By using a disk-shaped pulley as the winding cylinder, the purpose of the present invention is to achieve orderly winding of the electric wire and to flatten the whole.

[0005]

SUMMARY OF THE INVENTION The above-mentioned object of the present invention is to support an inner cylinder with a cam by a pivot on a base plate and to have an outer cylinder having a cam groove in which a roller rolling on the outer peripheral surface of the inner cylinder is mounted. To form a one-way clutch by inserting into the inner cylinder, and a flexible covered electric wire winding pulley is coaxially fitted to the outer cylinder with its pivoting cylinder, and the pulley is always fitted in the winding direction of the electric wire. A spring spring that urges the
Further, a conductive brush slidably contacting a plurality of conductive rings concentrically disposed on the surface of the pulley is fixedly provided, and an operating lever of a braking rod elastically contacting the cam surface of the inner cylinder is provided so as to project from the base plate. This can be achieved by providing a brake element that brakes the electric wire.

[0006]

[Operation] By feeding the electric wire from the pulley, the pulley is rotated about both the inner and outer cylinders forming the one-way clutch.

That is, since the roller in the cam groove of the outer cylinder squeezes in the width direction of the cam groove due to the rolling friction with respect to the inner peripheral surface of the outer cylinder due to the rotation of the pulley, the inner and outer cylinders are freely rotated, and the spring is self-rotated. The electric wire can be continuously paid out from the pulley while being wound around the outer cylinder peripheral surface while being drawn from the trochanter against the winding force.

When the pulling force of the electric wire is cut off at the end of feeding the desired length, the pulley tries to recover the rotation in the winding direction of the electric wire by the self-winding force of the mainspring in the rotator direction. On the contrary, since it rolls in the narrow direction of the cam groove, both the inner and outer cylinders are in a state of being joined by sandwiching the roller, and the outer cylinder and the pulley are connected by the braking rod that is tightly elastically contacted with the cam surface of the inner cylinder. The braking can be maintained.

Therefore, at this time, an electric wire, a conductive ring and a conductive brush can be sent and received to send and receive an electric current and an electric signal. When the use is finished, the brake lever is removed from the inner cylinder cam surface against the restoring force thereof. The pulley is rotated in the winding direction of the electric wire by the self-winding force of the spring of the mainspring together with the outer cylinder fitted to the pulley in the winding direction of the electric wire, and the electric wire can be wound around the pulley up to its stopper by the braking action of the brake element. .

[0010]

EXAMPLES Examples will be described with reference to the drawings. First, as shown in each of FIGS. 1 to 4, the basic structure of the present invention is that a pivot 1 is vertically installed on a base plate 1 made of an iron plate or the like by a wall plate 2a, and an inner cylinder 3 with a cam is attached to the pivot 2. After the state of FIG. 2, it is rotatably supported as shown in FIG.

A roller rolling on the outer peripheral surface of the inner cylinder 3
A one-way clutch as shown in FIGS. 5 and 6 is obtained by inserting an outer cylinder 5 having a cam groove 5a in which 4 and its elastic spring 4a are installed as shown in FIGS. 5 and 6 into the inner cylinder 3. Make up.

Further, the winding pulley 7 of the flexible covered electric wire 6 is coaxially fitted to the outer cylinder 5 by its pivotal cylinder 7a as shown in FIGS. 2 and 3, and this pulley 7 is always connected to the electric wire 6. As shown in FIGS. 1 and 3, a spring spring 8 for urging in the winding direction is provided by being wound around a rotator 9 which is pivotally supported on a substrate 1 by a pivot 9a.

Further, as shown in FIG. 7, a plurality of conductive rings 10 are concentrically arranged on the surface of the pulley 7 by an insulating disk 10a.
As shown in FIG. 3, a conductive brush 11 which is slidably contacted with is fixed to the inner surface of the plate member 1a which is held in parallel with the substrate 1.

As shown in FIG. 1, an operating lever 12a, which is pivotally connected to a free end of a seesaw-type braking rod 12 via a connecting piece 12b, is in elastic contact with the cam surface 3a of the inner cylinder 3 as shown in FIG. 1 to project as shown in FIGS.

Further, as shown in FIG. 1, a brake element 13 consisting of a unidirectional clutch pulley or a combination of simple pulleys for braking the inserting force of the electric wire 6 is provided as shown in FIG. Make up.

In each drawing, the reference numeral s designates a tension spring, 14 all pivots, and 15 a connecting post also for preventing loosening of the electric wire 6, which also holds the plate 1a in parallel with the substrate 1.

Reference numeral 16 is a guide bush for the electric wire 6, and 6a is an enlarged portion for stopper of the electric wire 6, which is the bush.
It is for restricting the winding amount of the electric wire 6 by abutting on 16 and 17 is a stopper pin, n is a locking member such as a screw or nut, and c is a space collar for preventing backlash. .

The structure of the present invention is as described above, and its operation will be described below. First, the electric wire 6 is unwound from the pulley 7 by hand or the like, and the unwound force causes the pulley 7 to rotate in the direction indicated by the chain line arrow in FIG. 1 about both the inner and outer cylinders 3 and 5 constituting the one-way clutch.

That is, when the pulley 7 rotates, the cam groove of the outer cylinder 5
The roller 4 in 5a is the outer cylinder in FIG. 1 with respect to the inner cylinder peripheral surface.
Since the rolling friction caused by the rotation of the arrow 5 causes the cam groove 5a to widen in the wide direction of the cam groove 5a as shown in Figs. 1 and 5, the inner and outer cylinders 3 and 5 are free to rotate, and the spring 8 is self-rotated. Outer cylinder while unrolling from the trochanter 9 against the entrainment force
The electric wire 6 can be continuously paid out from the pulley 7 while being wound around the peripheral surface of 5.

When the pulling force of the electric wire 6 is cut off when the electric wire 6 is fed out by a desired length, the pulley 7 is a trochanter of the mainspring 8.
The electric wire 6 tries to return to the winding direction by the self-winding force in the 9 direction, but this time the roller 4 rolls in the narrow direction of the cam groove 5a contrary to the above, as shown in FIG. Both the inner and outer cylinders 3 and 5 are connected with the roller 4 interposed therebetween, and the outer cylinder is connected to the cam surface 3a of the inner cylinder 3 as shown in FIG. 5 and the pulley 7 can be kept braking.

Therefore, at this time, the electric wire 6, the conductive ring 10 and the conductive brush 11 which have been fed out can send and receive an electric current and an electric signal, and when the use is completed, the operating lever 12a is provided as shown in FIG.
By rotating the braking rod 12 in the direction of the arrow in the figure against the restoring force of the pulling spring s, and removing it from the cam surface 3a of the inner cylinder 3,
The pulley 7 rotates in the winding direction of the electric wire 6 by the self-winding force of the spiral spring 8 and the rotator 9 together with the outer cylinder 5 fitted thereto, and the pulley 7 forms a pair with the electric wire 6 up to its stopper 6a. The braking action of 13,13 makes it possible to wind up.

[0022]

Since the present invention is constructed as described above, it has the following effects. The rotation of the pulley 7 by the feeding force of the electric wire 6 causes the roller 4 in the cam groove 5a of the outer cylinder 5 to squeeze in the wide direction of the cam groove 5a due to the rolling friction due to the rotation of the outer cylinder 5 with respect to the peripheral surface of the inner cylinder. The inner and outer cylinders 3 and 5 rotate freely, and the electric spring 6 is continuously drawn from the pulley 7 while being wound around the outer cylinder 5 while the mainspring 8 is being drawn out from the rotator 9 against the self-winding force. Therefore, there is a first effect that the wiring can be performed quietly, safely, conveniently and in a good appearance when used.

Further, if the pulling force of the electric wire 6 is cut off when the electric wire 6 has been fed out by a desired length, the pulley 7 returns to rotate in the winding direction of the electric wire 6 by the self-winding force of the main spring 8 in the direction of the rotator 9. However, this time, both the inner and outer cylinders 3 and 5 are connected with the roller 4 in between, and the cam surface of the inner cylinder 3 above
The outer cylinder is provided by the brake element 12c of the brake rod 12 that is in elastic contact with 3a.
Since it is possible to maintain the braking of the pulley 5 and the pulley 7, the electric wire 6, the conductive ring 10 and the conductive brush 11 which are easily and quickly fed out.
By means of this, it is possible to send and receive electric current and electric signals, and there is also a second effect of putting the user in use.

Upon completion of use, the operating lever 12a rotates the braking rod 12 in the direction of the arrow shown in the figure against the restoring force of the pulling spring s to disengage it from the cam surface 3a of the inner cylinder 3. 7
With the outer cylinder 5 fitted to it, the trochanter 9 of the spring 8
Rotate in the winding direction of the wire 6 by the self-winding force against
Since the electric wire 6 can be wound around the pulley 7 up to the stopper 6a by the braking action of the pair of brakes 13, 13, there is a third effect that no noise is generated without danger.

Further, by making the pulley 7 a disk-shaped grooved wheel, the pulley 7 can be made flat as a whole and the electric wire 6 is not twisted.

[Brief description of drawings]

FIG. 1 is a vertical sectional elevation view of an electric wire winding device of the present invention.

FIG. 2 is a vertical sectional side view of the central portion of the same apparatus as disassembled.

FIG. 3 is a vertical cross-sectional side view of the assembly of FIG. 2;

FIG. 4 is a sectional view taken along the broken line in FIG.

FIG. 5 is an enlarged sectional view of a one-way clutch suitable for use in the present invention.

FIG. 6 is an enlarged sectional view showing a state different from that of FIG.

FIG. 7 is a perspective view showing a relationship between a conductive ring and a conductive brush.

FIG. 8 is a vertical sectional elevation view in a state different from that of FIG.

[Explanation of symbols]

 1 board 2 pivot 3 inner cylinder 3a cam surface 4 roller 5 outer cylinder 5a cam groove 6 covered wire 7 pulley 7a pivoting cylinder 8 spring spring 9 rotor 10 conductive ring 11 conductive brush 12 braking lever 12a operating lever 13 brake element

Claims (1)

[Scope of utility model registration request] 1. An outer cylinder (5) having a cam groove (5a) in which a roller (4) rolling on the outer peripheral surface of the inner cylinder (3) is pivotally supported on a base plate (1) by a pivot shaft (2), and an inner cylinder (3) is provided. To form a one-way clutch, and the winding pulley 7 of the flexible covered electric wire 6 is coaxially fitted to the outer cylinder 5 by its pivoting cylinder 7a, and this pulley 7 is always connected to the electric wire 6. A spiral spring 8 for urging in the winding direction is provided by being wound around the rotator 9, and a conductive brush 11 which is slidably contacted with a plurality of conductive rings 10 concentrically insulated on the surface of the pulley 7 is fixedly provided. Cylinder
A winding device for a flexible covered electric wire comprising an operating lever 12a of a braking rod 12 which is elastically brought into contact with a cam surface 3a of a protrusion 3 from the substrate 1 and a brake element 13 for braking the electric wire 6.