JPH0523374Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a sunshade device for automobiles.

[Conventional technology]

Conventionally, sun visors are generally known as sunshade devices for automobiles. This consists of a plate-shaped shielding plate that is rotatably attached to the upper end of the windshield so that it can be placed along the ceiling surface when not in use and along the windshield surface when in use. It is something that was given.

[The problem that the idea aims to solve]

It is desired that the conventional plate-shaped sun visor described above be able to be stored as compactly as possible in order to ensure sufficient forward visibility for the driver when not in use. This demand is particularly strong in automobiles such as convertible coupes because they do not have a fixed ceiling section.

For this reason, the above convertible coupe etc.
It is possible to install a relatively small sun visor, but this will not provide sufficient sun protection.

As a countermeasure to this problem, it has been proposed to provide a rollable screen instead of a plate-shaped sun visor (for example, Japanese Utility Model Application Publication No. 149420/1983,
-Refer to Publication No. 7729). However, since the screen is in the form of a curtain, it is difficult to hold the screen in a flat state when it is extended, and the fixing work to fix the screen in that state after it has been pulled out to the desired extended state is time-consuming. It has the disadvantage that it takes a long time.

Furthermore, in the above-mentioned convertible coupe, etc., it is necessary to provide a sunshade not only on the windshield side but also on the overhead side, but since the above-mentioned screen cannot be held in a substantially horizontal position, it is not possible to form a shielding surface on the overhead side. .

This idea was made in view of such conventional circumstances, and can be stored compactly when not in use, and can be of the desired size when in use.
Another object of the present invention is to provide a sunshade device for an automobile that can reliably form a planar shielding surface and that can be easily and quickly converted between a used state and a non-used state.

[Means to solve the problem]

In order to achieve the above object, this invention includes a case body, a shaft body rotatably supported by the case body, a screen attached to the shaft body so as to be windable, and a screen on both sides of the screen. a link member rotatably connected to the free end of the screen and the case body, a coil spring is disposed between the case body and the shaft body, and the coil spring is wound. The case body and the shaft body are connected to each other so that a torsional rotation biasing force in the direction acts on the shaft body, and the link member is constituted by a plurality of link members rotatably connected to each other, and these links A shaft member is passed through the rotational connection between the members through a spring washer, and the spring washer is tightened by the shaft member so that a rotational resistance force greater than the rotational biasing force acts on the rotational connection. It was configured as follows.

[Effect]

According to the above configuration, the screen is supported by the link member so as to expand and contract in a fixed direction, and even in the expanded state, a rotational biasing force is applied to the screen in the winding direction by the coil spring. This allows the screen to remain flat without sagging. In addition, since the link members are interposed with spring washers so that a rotational resistance force greater than the rotational biasing force acts on the mutually connected portions, the screen can be maintained in that state simply by pulling it out to the desired size. can do.

〔Example〕

In Figure 1, the sunshade device is the case body 1.
A shaft body 2 rotatably supported around an axis A by this case body 1, a screen 3 whose proximal edge is attached to this shaft body 2 so as to be windable, and a distal edge of this screen 3. 31 and a link member 4 that connects the case body 1.

The shaft body 2 is formed into a cylindrical shape as shown in FIG. 2, and a notch groove 21 is formed at one end thereof to lock one end 51 of the coil spring 5a.
The coil spring 5a has one end 51 projected toward the outer circumference, and the other end 52 bent to cross the coil diameter. This coil spring 5
A third torsion rod 5b is inserted into the torsion rod 5b at its tip.
As shown in the figure, a locking groove 53 is formed, and the other end 52 of the coil spring 5a is locked in this locking groove 53, and in this state, the torsion rod 5b and the coil spring 5a are connected to the cylindrical shaft body. 2, and one end 51 of the coil spring 5a is locked in the notch groove 21 of the shaft body 2. Further, the base end portion 54 of the torsion rod 5b has a rectangular cross-sectional shape.

The case body 1 includes a cylindrical cover 11 and end members 12 attached to both ends of the cylindrical cover 11.
a, 12b, and these end members 12a, 1
2b, the cylindrical cover 11, the shaft body 2, and the torsion rod 5b are arranged coaxially.

The cylindrical cover 11 has a slit 111 cut out along its entire length in the longitudinal direction, and the screen 3 projects from the slit 111.

The end members 12a and 12b have an outer cylindrical portion 12 that opens outward on one side, as shown in FIGS. 2 and 3.
1 and an inner cylindrical portion 122, and shaft portions 123a and 123b are formed protruding from the other side. Outer cylinder portion 121 of the end members 12a, 12b
is formed such that its inner circumferential surface fits with the outer circumferential surfaces of both ends of the cylindrical cover 11, and a plurality of locking claws 124 are formed on this inner circumferential surface to protrude inward. The end members 12a, 12b and the cylindrical cover 11 are connected to each other by engaging the locking claws 124 with the locking holes 112 formed at the ends of the cylindrical cover 11.

In addition, the inner cylindrical portion 122 is formed so that its outer circumferential surface has an outer diameter slightly smaller than the inner diameter of the shaft body 2, and when the shaft body 2 is fitted onto the outer circumferential surface of the inner cylindrical portion 122, this shaft The body 2 is rotatably supported around an axis A.

A square hole 125 is formed in the inner cylindrical portion 122 of one end member 12a so as to correspond to the base end 54 of the torsion rod 5b, and the base end 54 of the torsion rod 5b is fitted into this square hole 125. As a result, the torsion rod 5b is fixed in position with rotation around its axis being restricted.

Shaft portions 123a of the end members 12a, 12b,
123b is a recessed hole 6 formed in the support block 6.
The support block 6 is fitted into the vehicle body B at the upper end of the windshield F with screws 62 so as to be rotatable about the axis A.

The shaft portion 123a of one end member 12a has a second
As shown in FIG. 4, a pair of engagement grooves 12
6 are formed at predetermined intervals in the circumferential direction, and this shaft portion 12
An annular spring 7 is fitted into the shaft portion 3a so as to press against the outer peripheral surface of the shaft portion 123a, and the outer peripheral surface of the annular spring 7 is supported in the recessed hole 61 of the support block 6. This annular spring 7 has the above-mentioned engagement groove 126.
A protrusion 71 that engages with each other is formed, and when this protrusion 71 engages with the engagement groove 126,
The case body 1 and the screen 3 are at a predetermined rotational position around the axis A, that is, the direction of expansion and contraction of the screen 3 is on the windshield F side (see the one-dot chain line in Figure 4) or the overhead side (see the two-dot chain line in Figure 4). It is maintained as follows. A lever portion 127 is integrally formed on the peripheral surface of the outer cylinder portion 121 of the one end member 12a so as to protrude outward.
The case body 1 and the screen 3 can be rotated around the axis A with respect to the support block 6 by the rotation operation 7.

As shown in FIGS. 1 and 2, the link member 4 is formed by a pair of strip plates (link members) 41 rotatably connected to each other by a screw (shaft member) 42. is screen 3
A band-shaped tension member 3 is disposed on both left and right sides of the link member 4, and one end of the link member 4 is connected to the cylindrical cover 11 of the case body 1, and the other end is connected to the tip edge 31 of the screen 3.
2 are rotatably connected to each other.

By extending and bending the link member 4, the screen 3 is unwound in a certain direction with respect to the cylindrical cover 11 of the case body 1, or rolled up and stored.

A rotation connecting portion 40a such as a pair of strip plates 41,
40b, 40c, etc., are provided with a corrugated washer 43 as shown in FIGS. 2 and 5.
The tip of the screw 42 is caulked so that a predetermined compressive force is applied to the screw 3. The compression force is determined so that the resulting frictional force acts as a rotational resistance force that is larger than the rotational urging force toward the winding side by the coil spring 5a.

Note that 33 in FIGS. 1 and 2 indicates an operating knob.

In the automobile sunshade device having the above configuration, during normal driving, the protrusion 71 of the annular spring 7 engages with one of the grooves 126 of the shaft portion 123a of the end member 12a, so that the expansion and contraction direction of the screen 3 is directed to the windshield. The case body 1 is fixed in position along the line F, and the screen 3 is stored in a wound state around the shaft body 2 (indicated by a dashed line in FIG. 1).

To form a sunshade on the windshield F side from the retracted state, pull out the screen 3 downward by holding the tab 33, and place the tab 3 at the desired position.
Just let go of 3. Rotating connection portion 40 of link member 4
a, 40b, and 40c are provided with a large rotational resistance force by the wave-shaped washer 43 due to the winding biasing force of the coil spring 5a, so the screen 3 stops at the position where the above-mentioned knob portion 33 is released and the Maintain position (see solid line in Figure 1). Therefore, after the screen 3 has been pulled out to a desired size, there is no need to perform any special work to maintain that state.

Moreover, the tip edge 31 of the screen 3 is
2, the screen 3 is maintained in a straight shape, and since a tensile force is applied to the screen 3 toward the proximal edge side by the winding force, the screen 3 is reliably kept in a flat state. It can be done.

In order to return the screen 3 to the retracted state, it is sufficient to hold the grip portion 33 and push it up. Since the shaft 2 is rotationally biased toward the winding side of the screen 3, the screen 3 is unwound with a relatively light pushing force, and the screen 3 is reliably wound around the shaft 2.

In addition, in the above-mentioned state of use, in order to change the angle of the screen 3 according to the direction of incidence of sunlight, it is only necessary to hold the knob 33 and rotate it around the axis A in the direction you want to change (first (See the two-dot chain line in Figure 2). In this case, the shaft portion 1 of the end member 12a
Since the outer peripheral surface of 23a is pinched by the annular spring 7, the rotated screen 3 can be held and temporarily fixed at a desired rotational position by its frictional force.

When the screen 3 is rotated overhead to a substantially horizontal position, the other engagement groove 126 of the shaft portion 123a engages with the protrusion 71 of the annular spring 7, and as a result, the screen 3 In order to securely fix the position and stand on its own, a sunshade can be formed above the head of a convertible coupe or the like, as shown in FIG.

In addition, in the retracted state, hold the lever portion 127 of the end member 12a and hold the other concave groove 1 of the shaft portion 123a.
It is also possible to set in advance so that the above-mentioned overhead sunshade is formed by rotating the ring 26 so that it engages with the protrusion 71 of the annular spring 7. That is, by rotating the lever portion 127, the case body 1 rotates together with the screen 3, and the direction of expansion and contraction of the screen 3 can be made substantially horizontal. In this state, screen 3
By pulling it out, a sunshade can be formed overhead as shown in FIG.

Note that other aspects of the above embodiment will be described below.

A Spring washers of other shapes may be used instead of the wave-shaped washer 43.

B The corrugated washer 43 has at least one pair of band plates 41
It is only necessary that the rotary connecting portions 40b are interposed between each other.

C Cylindrical cover 11 of case body 1 and end member 1
2a and 12b may be formed integrally.

D. An integrated end member 12a, 12b and support block 6 may be used and attached to the vehicle body B so that the screen 3 extends and contracts in one predetermined direction.

[Effect of idea]

According to the automotive sunshade device of this invention, the link member supports the screen so as to expand and contract in a certain direction, and even in the expanded state, the coil spring applies a rotational urging force in the winding direction. Because of this, it is possible to maintain a flat state without sagging. Thereby, a planar shielding surface can be reliably formed.

In addition, since the mutual connecting parts of the link members are tightened so that a rotational resistance force larger than the winding rotational urging force by the coil spring acts,
Simply pull out the screen to the desired size and it will remain in that state.Therefore, there is no need for any special work to maintain the use of this screen; simply pull it out to the desired size. Therefore, the conversion operation between the used state and the unused state can be performed easily and quickly.

When not in use, the screen can be rolled up around the shaft, allowing it to be stored more compactly than conventional plate sun visors, ensuring visibility, especially for cars without fixed roofs, such as convertible coupes. It is preferable in this respect.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing an embodiment of this invention;
The figure is an exploded perspective view of the embodiment shown in Fig. 1, and Fig. 3 is an exploded perspective view of the embodiment shown in Fig. 1.
Partially omitted enlarged sectional view taken along the - line in the figure, No. 4
The figure is an enlarged cross-sectional explanatory diagram taken along the - line in Figure 3,
5 is a partially omitted enlarged sectional view taken along the line - in FIG. 1, and FIG. 6 is a perspective view of an automobile equipped with the sunshade device shown in FIG. DESCRIPTION OF SYMBOLS 1... Case body, 2... Shaft body, 3... Screen, 4... Link member, 5a... Coil spring, 40a, 40b, 40c... Rotating connection part,
41...band plate, 42...screw, 43...corrugated washer.

Claims (1)

[Scope of utility model registration request] A case body, a shaft body rotatably supported by the case body, a screen windably attached to the shaft body, and a screen arranged on both sides of the screen, and connected to the free end of the screen and the case body. and a link member rotatably connected to each other, and a coil spring is disposed between the case body and the shaft body, and this coil spring applies a torsional rotation biasing force in the winding direction to the shaft body. The link member is composed of a plurality of link members rotatably connected to each other, and a spring washer is connected to the rotational connection portion of the link members. A sunshade device for an automobile, characterized in that a shaft member is passed through the shaft member, and the spring washer is tightened by the shaft member so that a rotational resistance force greater than the rotational biasing force acts on the rotational connection portion.