JPH048176Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is installed outdoors at openings such as windows of buildings, and folds a sunshade sheet wrapped around a winding shaft so that it protrudes from the vicinity of the winding shaft. The present invention relates to a sunshade that extends like an eaves with a flexible arm and can store a sunshade sheet by winding it around a winding shaft, and relates to the structure of the arm of the sunshade.

[Conventional technology]

Conventional arms of this type are generally bent in the middle and folded, and are configured to be extended by the force of a spring.As a specific example of an arm configured to fold, a pair of first and second The arms are connected to be rotatable in the horizontal direction at opposite ends, but a spring force is applied to the first and second arms as described above, and if the first and second arms are arranged in a straight line, If it stretches, the direction in which it will be folded the next time will be undefined, and there is no guarantee that it will be folded in the specified direction. One of the connecting parts is formed into a U-shape in cross section, and the other is fitted inside the U-shape for pivot support, so that when it is extended, a part of the arm that fits inside opens into the open opening in the other U-shaped part. The extension of both arms is controlled so that they are not in a straight line.

[Problem that the invention attempts to solve]

By the way, there was a defect in the above-mentioned connection part which was made into a U-shape and fitted into the U-shape for pivot support. In other words, when the arm is extended, a portion of the other arm strongly hits the wall facing the U-shaped opening of the connection, which can cause the wall to chip due to the impact force, which poses a problem in terms of strength. .

This idea was devised to eliminate the above-mentioned drawbacks.In contrast to conventional methods, where the force to stop rotation is applied to the wall in the direction of rotation, this device is constructed so that it can be applied in the longitudinal direction of the arm, making it durable. The object of the present invention is to provide a sunshade arm that can improve the appearance of the sun.

[Means for solving problems]

The arm of the sunshade according to this invention connects the first arm and the second arm to each other via a metal joint,
A contact part is provided on the end surface of one joint metal fitting, and a stopper that contacts the contact part is provided on the other joint metal fitting, and a stopping force against distraction is applied in the longitudinal direction of the arm to control the degree of distraction to a predetermined angle. .

[Example] The structure of the sunshade to which the arm of this invention is used will be explained with reference to FIG. A front frame 5 is fixed to the front end of the sunshade sheet 4 wound around the winding shaft 2, and the front ends of a pair of arms 6, 6 protruding from the arm support frame 3 are connected to the front frame 5. be.

Therefore, as shown in FIG. 1, the arm 6 is formed of a first arm 7 and a second arm 8, both of which are made of hollow shapes.
A joint fitting 12 is pivotally supported by a pin 11 to the support portion 10 of the arm support frame 3 so as to be able to swing in the lateral direction, and has a front end of the first arm 7 and a base end of the second arm 8 at each end. The front end of the second arm 8 is attached to the support part 16 of the front frame 5 via the coupling fitting 15 with the pin 1.
It is pivotally supported at 7. Also, the first arm 7
A hook 19 extending from one end of the tension coil spring 18 fitted therein is hooked onto the pin 11 of the arm support frame 3, and a filament 20 extending from the other end of the spring 18 is passed through the second arm 8 and attached to its tip. A hook 21 having a pin 1 attached to the front frame 5
7, and this spring 18 holds the first arm 7.
and the second arm 8 are urged to extend in a straight line.

To explain in more detail, the joint fitting 12 of the first arm 7
As shown in FIGS. 1 and 2, the front end portion is formed into a U-shaped cross section, and the joint fitting 13 of the second arm 8 is fitted into the joint fitting 12 forming the U-shape. , has a guide groove 22 on the outer periphery like a groove wheel, is formed by a cam 23 having a circumferential surface of a semicircle or more, and is pivotally connected to the joint fitting 12 of the first arm 7 by a pivot 14 at an eccentric position, The filament 20 of the spring 18 is fitted into a guide groove 22. Incidentally, since the filament 20 is in direct pressure contact with the cam 23, it is preferable that a wear-resistant coating is applied to the section of the filament 20 that is in contact with the cam 23, although not shown.

As shown in FIG. 2, the above-mentioned joint fitting 12 of the first arm 7 is provided with a contact portion 24 extending partially or entirely toward the second arm 8 on its front end surface. A small screw is screwed into the
A stopper 25 made of a protruding strip is provided on the upper surface of the joint fitting 13 of the second arm 8, and the degree of extension of the arm 6 is adjusted by the protruding length of the abutting portion 24. However, as shown in FIG.
The front surface of the abutment part 24 shown is flat, but it may be provided in a convexly curved state. By the way, as shown in FIG.
5 and stops the distraction, the other joint fitting 13 is formed so that it does not come into contact with the wall 12a facing the opening of the U-shaped joint fitting 12, as shown in FIG. Further, the abutting portion 24 is provided extending from the first arm 7 side, but this is extended from the second arm 7 side.
A stopper 25 may be provided on the joint fitting 12 of the first arm 7, protruding from the joint fitting 13 of the arm 8.

When extending the sunshade to which the arm of this invention is attached, the winding shaft 2 is rotated manually or automatically to unwind the sunshade sheet 4, and the folded arm is stretched out by the repulsive force of the built-in spring 18. , the abutting portion 24 rotates around the pivot 14, abuts against the stopper 25 and stops, and maintains the extended state. On the other hand, when the winding shaft 2 is rotated to wind up the sunshade sheet 4, the arm is folded and stored.

[Effect of idea]

In the arm of the sunshade according to this invention, the first and second arms are pivotally connected via a joint metal fitting so as to be folded, are biased in the extension direction by a spring, and have an abutting portion on the end face of one of the joint metal fittings. , and has a protruding stopper against which the abutting part comes into contact with the other joint metal fittings. When the arm is stretched, the abutting part hits the stopper and stops the distraction. Because of this, the stopping force is applied in the longitudinal direction of the arm, and no impact force is applied to the joint metal fittings in the lateral direction.Therefore, there is no risk of damaging the joint metal fittings, and durability can be improved. In addition, since the abutment part is strongly pressed against the stopper by a spring, it hardly rattles even if it is blown by the wind, and can be extended in a stable state.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing the arm of the sunshade according to this invention, Figure 2 is a plan view showing the main parts, Figure 3 is a plan view showing the state when it starts to be folded, and Figure 4 is a modified version. FIG. 5 is a plan view showing an example, and FIG. 5 is a perspective view showing an awning. 2... Winding shaft, 4... Sunshade sheet, 6...
Arm, 7...first arm, 8...second arm,
18... tension spring, 12, 13... joint fitting, 14... pivot, 24... contact portion, 25...
Stopper.

Claims (1)

[Scope of utility model registration request] The first arm 7 and the second arm 8 are pivotally connected to each other via joint fittings 12 and 13 so as to be rotatable in the lateral direction about a pivot 14, and a tension spring 18
The arms 7 and 8 are biased in the direction of extension, and a contact portion 24 is provided on the end face of one of the joint metal fittings 12 or 13, and the abutment portion 24 is in contact with the other joint metal fitting 13 or 12. An arm for an awning, characterized in that a stopper 25 is provided in a protruding manner to control the degree of extension of both arms 7 and 8.