JPH0654707A - Umbrella opening mechanism - Google Patents

Abstract

PURPOSE:To enable an umbrella to be opened and closed with a simple mechanism needing no umbrella opening spring by providing an umbrella opening mechanism previously operated and a drive delaying means for operating subsequently umbrella opening completing mechanism. CONSTITUTION:A frame part 21 having a long window hole as a drive delaying means 20 is provided in the tip of a traction rod 17. A traction cable 11 constituting an umbrella opening mechanism 18 is connected directly to the frame part 21. On the other hand, a locking part 22 formed in the lower end of a traction body 12 constituting an umbrella opening completing mechanism 19 is located below the long window hole in the frame part 21 while the umbrella is closed. Thus, before a large load generated by the tension of an umbrella cloth acts on support bones 7, the ascent of the lower runner 6 is stopped. Hence, the traction of the traction cable 11 will be carried out with a small force. The intermediate runners 4 is pulled down to disperse the load to the main bones 3 and support bones 5 and the traction of the traction body 12 is carried out with a small force. The umbrella can be opened at hand by one touch manner without using any spring. Further, the umbrella may be positively drivably closed by a power source of hand or motor or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an umbrella opening mechanism for a western umbrella that can be operated at hand.

[0002]

2. Description of the Related Art Conventionally, as a western umbrella which can be opened by hand, an automatic umbrella-opening umbrella called a jump umbrella is known.

Such a jump-type automatic umbrella-opening umbrella is
An upper roller fixed to the upper end of the center rod, and a middle roller and a lower roller which are slidable on the center rod below the upper roller,
The main bone is pivotally attached to the upper rokuro, the support bone pivotally connected to the middle part of the main bone is pivotally attached to the middle rocro, and the child bone pivotally connected to the middle part of the support bone is pivotally attached to the lower rokuro, An opening umbrella spring, which is a compression spring, is interposed between the middle wheel and the lower wheel.

Therefore, the middle and lower rockers are always urged in the separating direction by the opening umbrella spring, and in the state where the lower rocker is released, the middle and lower rockers move up along the middle rod while separating. , Open the umbrella automatically.

On the other hand, when closing the umbrella, when the user holds the lower wheel and lowers the lower wheel along the center rod, the middle wheel and the lower wheel resist each other against the opening spring. Close the frame while approaching. When the lower wheel is in the closed position, it is locked by a cistern attached to the center rod and stopped.

The repellant can release the lower wheel by pressing the push button, and when the umbrella is opened again, the push button is simply pressed, whereby the automatic umbrella opening described above is performed.

[0007]

According to the conventional jump-type automatic umbrella-opening umbrella, the operation for opening the umbrella is performed with a single touch of a push button. , As mentioned above, the lower wheel must be gripped and lowered along the center rod. In this umbrella closing operation, the work of holding the hand with one hand and the lower hand with the other hand is forced to descend. Therefore, opening the umbrella
One-touch operation is possible, but one-touch operation is not possible with the closed umbrella, and the convenience of automation is not perfect.

Therefore, in order to easily carry out not only the umbrella opening operation but also the umbrella closing operation at hand, it is necessary to fundamentally review the jump type structure. As long as the lid is a jump-type automatic umbrella-opening umbrella that uses an opening spring, it requires a force superior to that of the opening spring to close the umbrella. This is because it is extremely difficult to easily operate the umbrella at hand.

An object of the present invention is to provide an umbrella opening mechanism for a western umbrella which can be opened by one-touch operation at hand without using a spring. In the present invention, the umbrella closing of the western umbrella is possible to perform the natural umbrella closing by the tension of the umbrella cloth and the own weight of the skeleton by simply releasing the holding of the umbrella opening. Since it does not have it, it becomes possible to positively perform the umbrella closing drive by a power source such as manual or electric.

[0010]

In order to solve the above-mentioned problems, the present invention is constructed such that an upper roller fixed to a portion near an upper end of a center rod and a lower rod slidable on the center rod. , A lower rocker slidably attached to a middle rod below the inner rocker, a rib attached to the upper rocker, and a rib attached to the inner rocker. In a western umbrella comprising a fulcrum pivotally connected to the middle part of the lower part, and a child bone pivotally attached to the lower part of the locator and also connected to the middle part of the part of the skeleton, Then, the pulley structure is fixed to the center rod, the traction cable connected to the lower wheel is introduced into the folded center rod through the pulley structure, and the traction cable is connected to the first traction means. Introducing the actuating mechanism and the traction body connected to the middle wheel into the middle rod,
An umbrella opening achievement mechanism formed by connecting the towing body to the second towing means, and a time difference drive means for activating the opening operation mechanism first and then the opening achievement mechanism is provided.

The drive source of the time difference drive means may be a manual lever, but may be an electric motor or the like.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, an upper wheel 2 is fixed near the upper end of a center rod 1 extending from the hand, which will be described later, and a base end of a rib 3 is pivotally attached to the upper wheel 2. A middle wheel 4 is slidably inserted into the middle rod 1 below the upper wheel 2, and a base end of a fulcrum 5 is pivotally attached to the middle wheel 4. The tip of the fulcrum 5 is pivotally connected to a midway part of the rib 3. Further, a lower wheel 6 is slidably inserted below the inner wheel 4, and a skeleton 7 is pivotally attached to the lower wheel 6, and the tip of the skeleton 7 is pivoted to a midway portion of the fulcrum 5. It is tied.

A pulley structure 8 is fixed to the center rod 1 located between the center wheel 4 and the lower wheel 6. As shown in FIG. 2, the pulley structure 8 has a pulley 10 which is externally inserted into the center rod 1 and is fixedly attached 9 and is rotatable around a horizontal axis. In response to this, the center rod 1 has a slit facing the pulley 10. Therefore, the traction cable 11 connected to the lower wheel 6 is folded back through the pulley 10 and introduced into the center rod 1 through the slit, and is connected to the first traction means described later.

A pulling body 12 is connected to the intermediate wheel 4, and the pulling body 12 is guided through the inside rod 1 and is connected to a second pulling means which will be described later. That is, as shown in FIG. 2, the pin 1 provided so as to penetrate in the diametrical direction of the intermediate rocker 4.
The pulling body 12 is connected to the guide rod 3, and the pulling body 12 is guided downward along the inside of the center rod 1. The pin 13 is guided by a guide slit 14 formed in the center rod 1 and allows the center wheel 4 to slide.

Therefore, the principle of operation of the umbrella opening will be described with reference to FIG.
When 1 is towed, the lower wheel 6 is raised, and the ribs 7 push up the ribs 3 and the supporting bones 5 to open the umbrella. If a complete opening of the umbrella is carried out only by raising the lower wheel 6, it is necessary to carry out the opening of the umbrella cloth against the tension of the umbrella cloth stretched over the main rib 3, so that a considerable traction force is required. I need. And, in order to maintain this open state, a large traction force must be maintained.

Regarding this point, the umbrella opening operation of the present invention can be considered in two steps. First, in the first step, the lower rocker 6 is raised by pulling the pulling cable 11 to open the main rib 3 and the supporting ribs 5, but a large load generated by the tension of the umbrella cloth acts on the child ribs 7. Stop the lower rocker 6 from rising before. Therefore, it is sufficient to pull the pulling cable 11 with a small force.

Next, in the second stroke, the pulling member 12 is pulled to lower the intermediate wheel 4. When the intermediate rocker 4 descends, the rib 3 is pushed up, and the rib 3 is completely opened against the tension of the umbrella cloth. The force required to fully open the umbrella is much smaller in the latter case if the push-up force that raises the lower wheel 6 is compared with the pull-down force that lowers the middle wheel 4 for that purpose. Be understood. Cover and push the lower wheel 6 up
In order to generate an umbrella opening force as a thrust force of, the lower rocker 6 must counter the full load, whereas the lowering of the middle rocker 4 acts to spread the rib 3 and the fulcrum 5, This is because it is possible to disperse the load on the main rib 3 and the fulcrum 5. Therefore, the pulling of the towing body 12 requires only a small force, and the umbrella is fully opened.

Therefore, the principle of opening the umbrella of the present invention is that the lower wheel 6 is raised by pulling the tow cable 11 and then the middle wheel 4 is lowered by pulling the tow body 12. The configuration of the embodiment that enables such time difference driving will be described below.

In the embodiment shown in FIG. 2, the first pulling means 15 to which the pulling cable 11 is connected and the second pulling means 16 to which the pulling body 12 is connected are also used by the pulling rod 17 made of the same member. ing. Therefore, the path from the lower wheel 6 to the tow bar 17 via the tow cable 11 constitutes the umbrella opening actuation mechanism 18, and the path from the middle wheel 4 to the tow bar 17 via the tow body 12 constitutes the umbrella opening achievement mechanism 19. To do.

The time difference drive means 20 for actuating the opening operation mechanism 18 first and then the opening achievement mechanism 19 is formed at the tip of the tow bar 17. That is, a frame portion 21 having a long window hole is provided at the tip of the towbar 17. Tow cable 1 that constitutes the umbrella opening operation mechanism 18
1 is directly connected to the frame portion 21. Therefore, when the tow bar 17 is towed, the tow cable 11 is immediately towed. On the other hand, the towing body 12 that constitutes the umbrella opening achievement mechanism 19,
The locking portion 22 formed at the lower end of the tow body 12 is inserted into the long window hole of the frame portion 21, and the locking portion 22 is positioned below the long window hole in the closed state. Therefore, the tow bar 17
When the tractor 12 is pulled, the frame portion 21 descends and the pulling body 12 is not pulled until the locking portion 22 engages with the upper portion of the frame portion 21. The tow bar 17 descends by a predetermined stroke, and the locking portion 22 moves to the frame portion 2.
When the upper part of 1 is engaged, the tow body 12 is pulled by the tow rod 17 and descends only by this.

The drive source of the time difference drive means 20 including the tow bar 17 is preferably arranged at the hand 23 provided at the tail end of the center bar 1.

In the embodiment shown in FIG. 2, the hand 23 is
Hollow part 2 extended from the center rod support part 23a into a substantially L shape
3b is provided. The drive source of the time difference drive means 20 is configured by a manual lever 24, and includes an opening umbrella lever portion 26 and an umbrella closing lever portion 27 that extend in opposite directions from a shaft fulcrum 25 provided in a middle portion of the center rod support portion 23a. Umbrella lever part 2
6 has a tip portion 29 that moves along the slit 28 of the hollow portion 23b, and a drive cord 30 such as a wire connected to the tip portion 29 is provided with a pulley group 31, 32 in the hollow portion 23b.
It is connected to the tow bar 17 via 33.

The operation of the manual lever 24 in this embodiment will be described. From the closed state shown in FIG. 2, the umbrella holding lever portion 26 is moved to the middle rod support portion 23a by the fingers holding the hand 23.
When it is rotated so as to be pulled toward, the drive cord 30 is pulled by the lever tip portion 29, and the pull rod 17 is pulled downward. As a result, as shown in FIG. 3, the tow cable 11 is pulled at the same time as the tow bar 17 is lowered to raise the lower wheel 6, so that the above-described umbrella opening operation mechanism 18 performs the umbrella opening operation.

Subsequently, if the umbrella opening lever portion 26 is further gripped, the tow bar 17 continues to descend due to the drive rope 30,
When the locking portion 22 of the time difference drive means 20 is engaged with the upper portion of the frame portion 21, as shown in FIG. 4, the middle wheel 4 is pulled down by pulling the tow body 12 together with the rise of the lower wheel 6, to open the umbrella. The umbrella is fully opened by the achievement mechanism 19. At this time, the lever tip portion 29 is held by the leaf spring stop holding means 34 in the hollow portion 23b and stops.

On the other hand, when the umbrella is closed from the open state shown in FIG. 4, when the umbrella holding lever portion 27 is pivoted so as to be drawn toward the center rod support portion 23a by the fingers holding the hand 23, the lever tip end portion is rotated. When 29 is removed from the stop holding means 34 and the lever 24 is returned to the original position shown in FIG. 2, the umbrella can be closed.

In the illustrated embodiment, the closing of the umbrella from the opened state is naturally performed by the weight of the frame. In order to positively close the umbrella, it is conceivable to employ various mechanisms that positively raise the middle wheel 4 and lower the lower wheel 6, but the direct purpose of the present invention is to I won't go into detail because it doesn't exist.

FIG. 5 shows a locking device for the lower wheel 6 in relation to the configuration of the above embodiment. That is, lower 6
Has a claw piece 37 biased by the spring 35 so as to be always locked in the locking groove 36 of the center rod 1, and connects the traction cable 11 to an extension portion 38 of the claw piece 37. According to this structure, the locking groove 36 is formed in the center rod 1 at a position corresponding to the opening position. Therefore, the lower wheel 6 raised when the umbrella is opened has the pawl piece 37 at the predetermined position for opening the umbrella.
Is locked in the locking groove 36, and is suitably stopped. On the other hand, in order to lower the lower wheel 6 when closing the umbrella, if the tow cable 11 is tensioned in advance, the claw piece 37 will move to the spring 35.
Since it comes out of the locking groove 36 while rotating against the force, it becomes possible to lower the lower wheel 6 while sliding the claw piece 37 against the peripheral surface of the center rod 1 thereafter.

FIG. 6 shows an embodiment in which the drive source of the time difference drive means 20 is constituted by an electric motor.

In the embodiment shown in FIG. 6 (A), the electric motor 39 rotationally drives the screw rod 40 via a speed reduction mechanism composed of a gear train. A nut 41 is screwed into the screw rod 40, and the nut 41 engages a slide piece 42 with a slide groove 43. Therefore, by rotating the screw rod 40 in the forward and reverse directions, the nut 41 moves forward and backward along the slide groove 43 in the axial direction. Such a drive mechanism is built in the hand 23, and an extension portion 23c of the hand 23 houses a power source 44 such as a dry battery.

According to this embodiment, the tow bar 17 is the rope 4.
5 is connected to the nut 41 via
The nut 41 is lowered by rotating the screw rod 40 in the forward direction by the electric motor 39, and the pull rod 1 is passed through the cord 45.
7 is towed down to enable the opening operation as described above.
On the other hand, by rotating the screw rod 40 in the reverse direction by the electric motor 39, the nut 41 is raised to enable the umbrella closing operation.

In the embodiment of FIG. 6B, the tow bar 17
A rack 46 is provided at a lower end of the rack 46, and a pinion 47 is engaged with the rack 46. This pinion 47
Is driven and rotated by an electric motor 39 via a speed reducing mechanism such as a worm and a worm gear. A power source 44 is housed in the extension 23c of the hand 23.

According to this embodiment, the pinion 47 is normally rotated by the electric motor 39 to lower the tow bar 17 via the rack 46, thereby enabling the above-mentioned umbrella opening operation. On the other hand, the electric motor 39 causes the pinion 47
By reversing, the rack 46 is raised and the umbrella closing operation is enabled.

[0034]

According to the present invention, by pulling the pulling cable 11 of the opening operation mechanism 18, the lower wheel 6 is raised, and by pulling the towing body 12 of the opening achievement mechanism 19, the middle wheel 4 is moved. In the western umbrella which is lowered to open the umbrella, the opening operation mechanism 18 is operated first by the time difference drive means 20, and then the opening achievement mechanism 19 is operated. It can be done with a small force.

Therefore, even when the drive source of the time difference drive means 20 is constituted by the manual lever provided at hand, the umbrella can be completely opened with a weak force, and the time difference drive means 20 is provided.
Even when the drive source is constituted by an electric motor provided at hand, there is an effect that a small motor is sufficient and power consumption is low.

In addition, the lower lock 6 is pulled up via the pulley structure 8, and the pulling cable 11, the pulling body 12, the first pulling means 15 and the second pulling means 16 can be pulled in the same direction. Therefore, the drive mechanism and the time difference drive means 2 for pulling these can be used.
There is an effect that the structure such as 0 becomes simple and the invention can be easily implemented.

Further, since the opening umbrella spring unlike the conventional jump umbrella is not used, the closing mechanism can be simply constructed, and both opening and closing operations can be performed at hand. It is advantageous in that a western umbrella can be provided easily.

[Brief description of drawings]

FIG. 1 illustrates the umbrella opening principle according to the invention, (A)
Is a schematic front view showing a closed umbrella, and FIG. 6B is a schematic front view showing an open umbrella.

FIG. 2 is a vertical sectional view showing an embodiment of the present invention in a closed state.

FIG. 3 is a vertical cross-sectional view showing an embodiment of the present invention in a halfway state of opening an umbrella.

FIG. 4 is a vertical sectional view showing an embodiment of the present invention in a state where the opening of the umbrella is completed.

FIG. 5 is a vertical cross-sectional view showing an additional embodiment of the lower wheel used in one embodiment of the present invention.

6A and 6B show an electric drive mechanism used in one embodiment of the present invention. FIG. 6A is a vertical sectional view showing a first embodiment of the electric drive mechanism, and FIG. It is a longitudinal cross-sectional view showing a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 center rod 2 upper roller 3 main bone 4 middle roller 5 supporting bone 6 lower roller 7 child bone 8 pulley component 10 pulley 11 traction cable 12 traction body 15 first traction means 16 second traction means 17 traction rod 18 open umbrella actuation mechanism 19 Opening umbrella achievement mechanism 20 Time difference drive means 21 Frame part 22 Locking part 23 Hand 24 Manual lever 39 Electric motor

Claims (3)

[Claims] 1. An upper roller fixed to a portion near an upper end of the center rod, a middle roller which is slidably inserted to the center rod below the upper roller, and a middle rod which slides below the center roller. A lower rocker movably extrapolated, a rib attached to the upper rock, a rib attached to the middle rock, and a backbone attached to the midpoint of the rib, and a lower rock. In a western umbrella comprising a child bone pivotally connected to a middle portion of the fulcrum, a pulling cable connected to the lower wheel by fixing a pulley structure to the center rod located between the middle wheel and the lower wheel. Is introduced into the folded center rod through the pulley structure, and the opening operation mechanism is formed by connecting the pulling cable to the first pulling means, and the pulling body connected to the middle wheel is introduced into the middle rod. , An umbrella opening achievement mechanism formed by connecting the towing body to the second towing means, and the umbrella opening operation mechanism is operated first. An umbrella opening mechanism for a western umbrella, which is provided with a time difference drive means for subsequently activating the opening umbrella achievement mechanism. 2. The umbrella opening mechanism according to claim 1, wherein the drive source of the time difference drive means is a manual lever. 3. The umbrella opening mechanism of claim 1, wherein the drive source of the time difference drive means is an electric motor.