JPH0721412U - Center hinge structure of automobile sun visor - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the number of parts and facilitate manufacturing. [Structure] A light shield plate 3 is rotatably supported around a horizontal shaft 21 of a support shaft 2 provided in a vehicle compartment, and a columnar shape is provided on an extension line of the horizontal shaft 21 of the light shield plate 3 in parallel with the support shaft. Is a center hinge structure of an automobile sun visor provided with the center hinge 4 of FIG. 1, wherein the light-shielding plate 3 has a frame-shaped core portion 31 and a skin 3 covering the core portion 31.
3, the center hinge 4 is composed of a core hinge 41 integrally provided on the core portion 31 and a hinge portion skin 43 covering the outer peripheral surface of the core hinge 41. The core hinge 41 is the horizontal shaft. 21
The core hinge 41 is formed with a long groove which is cut in the horizontal direction and is set to be substantially the same as the shaft diameter of the core hinge 41.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a center hinge structure for an automobile sun visor provided in a vehicle compartment to block incident light.

[0002]

[Prior art]

 Conventionally, a sun visor 1 as illustrated in FIG. 4 is known. As shown in this figure, the sun visor 1 is composed of a support shaft 20 attached to the ceiling of the passenger compartment, and a light shielding plate 30 attached to the support shaft 20. The support shaft 20 has an L-shape that is bent at a right angle at a substantially central portion, and is composed of a horizontal shaft 210 and a vertical shaft 220. The vertical shaft 220 is attached to a bracket (not shown) fixed to the ceiling of the vehicle compartment so as to be rotatable in the horizontal direction around the axis, and the light shield plate 30 is rotatable around the horizontal shaft 210. Is supported by.

Therefore, with the support shaft 20 provided at the upper corner of the front seat of the vehicle compartment, the light shield plate 30 can be rotated about the vertical shaft 220 between the front window and the side window. It becomes possible to freely change the posture three-dimensionally by rotating around a horizontal axis 210 between a storage position that is substantially parallel to the ceiling surface and a light shielding position that is suspended from the ceiling. There is. Incidentally, the light shield plate 30 shown in FIG. 4 is in a posture to shield the incident light from the front window.

By the way, when the light shield plate 30 is rotated around the horizontal axis 210 from the light shield position as shown in FIG. 4, for example, when a force is applied to the light shield plate 30 with the lower left side portion of the light shield plate 30 as an action point. Since the horizontal shaft 210 and the above-mentioned point of action are considerably separated on a diagonal line that diagonally crosses the light shield plate 30, it is not possible to smoothly rotate the light shield plate 30 around the horizontal shaft 210. Exists. Therefore, in order to avoid such an inconvenience, a cylindrical center hinge 40 is formed in parallel with the horizontal shaft 210 at a side edge portion of the light shield plate 30 substantially corresponding to the extending direction of the horizontal shaft 210. Has been done.

On the other hand, a center adapter S corresponding to the center hinge 40 is attached to a ceiling frame (not shown) in the vehicle compartment. There are various types of center adapters S, but the center adapter S illustrated in FIG. 4 is composed of a U-shaped member, and its opening is opposed to the center hinge 40. Is attached to. A pair of upper and lower arc portions are formed in the opening of the center adapter S so as to face each other.

Therefore, as shown in FIG. 4, when the light blocking plate 30 is rotated about the vertical axis 220 and set in a position parallel to the front window, the pair of upper and lower arc portions of the center adapter S are separated from each other. When the center hinge 40 is fitted between the circular arc portions, the light shield plate 30 is stabilized by being supported by the horizontal shaft 210 and the center adapter S, and even if a force is applied to the lower left side portion of the light shield plate 30. Even if the above is added, the light shielding plate 30 can be smoothly rotated about the horizontal axis 210.

[0007]

[Problems to be solved by the device]

 By the way, in the conventional center hinge 40, the frame (core wire 4a) made of steel wire forming the skeleton of the light shielding plate 30 is applied as the core material of the horizontal shaft 210. The core wire 4a cannot be made so thick in order to reduce the weight of the light shielding plate 30. Therefore, the core wire 4a is used as a core material for the horizontal shaft 210 while it is still thin, but it cannot be applied as a locked member if it is still thin, and eventually the shaft diameter has been increased.

[0008] Specifically, as shown in FIG. 5, the outer periphery of the core wire 4a, which is thinner than the horizontal axis 210, is covered with a skin 3a covering the surface of the light-shielding plate 30. The core wire 4a covered with the skin 3a is sandwiched from the left and right by a pair of half-cylindrical bodies 4b vertically split into two to form an outer pipe 4c. The core wire 4a, the skin 3a, and the outer pipe 4c. The center hinge 40 was constituted by and.

The fixing of the skin 3a to the core wire 4a is performed by wrapping the core wire 4a from the left and right with the skin 3a, and then welding the contact edge portions to each other by an ultrasonic welder, and thereafter, the pair of left and right The attachment of the semi-cylindrical body 4b around the core wire 4a has been performed by adhering the abutting edges of each other with an adhesive.

That is, conventionally, in order to form the center hinge 40 on the light shielding plate 30, it is necessary to perform the above-described welding operation of the outer skin 3a and the subsequent bonding operation using the semi-cylindrical body 4b. The operation itself is extremely complicated and takes a lot of time, and the number of parts is large, resulting in an increase in manufacturing cost.

The present invention has been made to solve the above problems, and an object thereof is to provide a center hinge structure for an automobile sun visor which has a small number of parts and is easy to manufacture. There is.

[0012]

[Means for Solving the Problems]

 In the center hinge structure for an automobile sun visor according to claim 1 of the present invention, a light shield plate is rotatably supported around a support shaft provided in a vehicle compartment, and the support shaft is provided on an extension line of the support shaft of the light shield plate. A cylindrical center hinge is provided parallel to the center hinge, and the center hinge is a center hinge structure of a vehicle sun visor that is configured to be attachable to and detachable from a center adapter fixed in the passenger compartment. It is characterized in that a long groove extending in the direction is formed.

A center hinge structure for an automobile sun visor according to claim 2 of the present invention is the center hinge structure for an automobile sun visor according to claim 1, wherein the light-shielding plate has a skeleton core portion and the core portion. The center hinge is composed of a core hinge integrally provided on the core portion, and a skin covering the outer peripheral surface of the core hinge, and the center hinge and the core hinge of the shading plate are formed by the skin. It is characterized in that it is continuously and integrally coated.

[0014]

[Action]

 According to the center hinge structure of the sun visor for an automobile of claim 1, since the center hinge is formed with the long groove extending in the longitudinal direction, for example, in a direction in which the groove width of the long groove is narrowed, a moderation can be obtained. By setting the phase of the long groove so that the core hinge can be elastically deformed, when the center hinge is fitted in or pulled out from a predetermined locking member attached to the vehicle interior, the elastic deformation described above is performed. The urging force generated by this will allow you to obtain a positive sense of moderation.

According to the center hinge structure for an automobile sun visor of claim 2, the shading plate is composed of a skeleton core portion and a skin covering the core portion, and the center hinge is the core portion. It is composed of a core hinge integrally provided on the core hinge and a skin covering the outer peripheral surface of the core hinge. Since the core part of the light shielding plate and the core hinge are continuously and integrally covered by the skin, It is not necessary to cover the thin core wire with such an outer skin and then to cover the outer pipe in order to further increase the pipe diameter.The core hinge is set to an appropriate thickness in advance to cover the outer skin. At that point, a center hinge having a sufficient thickness as a locked member is completed. Therefore, the number of parts can be reduced as compared with the conventional one, and the man-hours for assembling the sun visor can be significantly reduced.

[0016]

【Example】

 FIG. 1 is a partially cutaway perspective view showing an example of an automobile sun visor to which a center hinge structure according to the present invention is applied. As shown in this figure, an automobile sun visor 1 is composed of a polypropylene support shaft 2 attached to a ceiling portion of a vehicle interior, and a light shielding plate 3 attached to the support shaft 2. The support shaft 2 has an L-shape that is bent at a right angle in a substantially central portion, and a horizontal shaft 21 and a vertical shaft 22 are formed on both sides of the support shaft 2. The vertical shaft 22 is attached to a bracket (not shown) fixed to the ceiling of the vehicle compartment so as to be rotatable in the horizontal direction around the axis, and the light shielding plate 3 is rotated around the horizontal shaft 21. Freely supported.

In the present embodiment, such a support shaft 2 is attached to the upper corner of the front seat of the passenger compartment, and the light shielding plate 3 is rotated around the axis of the vertical shaft 22 between the front window and the side window. It is possible to freely change the posture three-dimensionally between the storage position that is substantially parallel to the ceiling surface and the light-shielding position that is hung from the ceiling part by rotating it about the horizontal axis 21. You can do it. Incidentally, the light-shielding plate 3 shown in FIG. 1 is in a posture of shielding the incident light from the front window.

The light-shielding plate 3 is composed of a core portion 31 constituting the skeleton thereof, a pad portion 32 in which the core portion 31 is embedded, and a skin 33 covering the surface of the pad portion 32. Has been done. The core portion 31, the pad portion 32 and the outer skin 33 are all made of synthetic resin. Specifically, polypropylene is used as the material of the core portion 31, and polypropylene foam is used as the material of the pad portion 32. A flexible polypropylene sheet is used as the outer skin 33.

The core portion 31 and the pad portion 32 are manufactured by a so-called integral foam molding method in which the core portion 31 is mounted in the mold in advance and then the foaming raw material is foamed and molded. The surface of the pad portion 32 of the light-shielding plate 3 thus obtained is covered with a skin 33, and the peripheral portion of the skin 33 is welded by a welding tool such as an ultrasonic welder, and the welded portion is linearly formed. The light-shielding plate 3 is completed with the welded portion 34 formed on.

A center hinge 4 according to the present invention, which is a locked member, is provided on a part of the light shielding plate 3. FIG. 2 is a partially cutaway enlarged perspective view of the center hinge portion of the light shielding plate 3 shown in FIG. 1. As shown in this figure and FIG. 1, the center hinge 4 is provided on an extension line of the horizontal shaft 21. Has been.

At the upper left portion of the core portion 31, there is formed a recessed portion 31 a that is cut out in a groove shape from the edge portion toward the central portion of the light shielding plate 3. The center hinge 4 includes a core hinge 41 integrally provided in the core portion 31 so as to bridge the upper portion of the recess 31a, and a hinge portion skin 43 integral with the skin 33 covering the outer peripheral surface of the core hinge 41. It is configured.

The core hinge 41 is formed with a long groove 46 which is cut from the outer peripheral surface in the axial direction and extends in the longitudinal direction. When the center hinge is attached to the center adapter, the groove width of the long groove 46 is changed. By narrowing it, you can get a sense of moderation. The core hinge 41 is set to have the same diameter as the horizontal shaft 21.

In order to form the center hinge 4, the core hinge 41 is previously formed as a part of the core portion 31 during injection molding. After that, integral foam molding is performed to embed the core portion 31 provided with the core hinge 41 inside the pad portion 32. At this time, the metal mold is formed so that the pad portion 32 does not adhere to the outer peripheral surface of the core hinge 41. The device is elaborate. Then, the surface of the pad portion 32 of the light shielding plate 3 obtained by the integral foaming is covered with the skin 33, and the edge portion thereof is welded by the ultrasonic welder to form the welded portion 34 and the core hinge 41 is covered. A hinge welded portion 44 is formed at the edge of the hinge portion skin 43, and as a result of subsequent fusion cutting, a center hinge 4 as shown in FIGS. 1 and 2 is formed on a part of the light shielding plate 3.

Since the center hinge 4 of the present invention has the long groove 46 extending in the longitudinal direction in the core hinge 41 of the center hinge 4 as described above, the shading plate 3 is rotated about the vertical axis 22. When the center hinge 4 is fitted into the bifurcated portion of the center adapter S attached to the ceiling frame and further pressed in the state of being in contact with the front window or the side window, the groove width of the long groove 46 provided in the core hinge 41 is narrowed. As described above, the core hinge 41 is elastically deformed, and an urging force is generated by this reaction, so that the urging force provides a feeling of moderation when the center hinge 4 is fitted into the center adapter S 1. Even when pulling out the center hinge 4 once fitted into the center adapter S, a moderation feeling can be obtained by the same action as above.

Further, in the center hinge structure of the automobile sun visor of the present invention, the light shielding plate 3 is composed of a frame-shaped core portion 31 and a skin 33 covering the core portion 31, and the center hinge 4 is the above-mentioned. The core hinge 41 is integrally provided on the core portion 31, and the hinge portion skin 43 covering the outer peripheral surface of the core hinge 41 is formed. These skins 33 and 43 are formed as one body, and therefore, as shown in FIG. As in the conventional center hinge 40 shown in Fig. 1, the surface of the core wire 4a is covered with a skin 3a for the core wire 4a, and after the welding operation, the core wire 4a is covered with a pair of semi-cylindrical bodies 4b to bond them. It is possible to easily assemble it without performing various operations, and the number of parts is reduced, which is convenient for reducing the manufacturing cost.

Further, in the sun visor adopting the center hinge structure of the present invention, all the parts constituting the support shaft 2 and the light shielding plate 3 are made of synthetic resin. By doing so, first, it becomes possible to easily set the core hinges 41 and 45 to have a sufficient thickness as locked members. In addition, when disposing of the sun visor 1 after the end of its useful life, it is not necessary to disassemble it in advance to separate the metal, but incinerate it as it is in its original form and recover various useful fuels. It is now possible to provide the discarded sun visor 1 to, which is useful for global environment conservation.

FIG. 3 is a partially cutaway enlarged perspective view of a main part showing another example of the center hinge structure according to the present invention. In the case of this example, a through groove (long groove) 46 'extending in the longitudinal direction is formed in the core hinge 45 constituting the center hinge 4'. The through-groove 46 'is penetrated from the outer peripheral surface on the left side of FIG. 3 of the core hinge 45 through the axial center toward the outer peripheral surface on the right side, and holds the core hinge 45 from the upper and lower outer peripheral surfaces. By thus pressing from above and below, the core hinge 45 is elastically deformed and the groove width of the through groove 46 'is narrowed. The other structure of the center hinge 4'is exactly the same as that of the center hinge 4 in the previous example.

Since the center hinge 4 ′ of this example is configured as described above, when the center hinge 4 is locked to the center adapter S shown in FIG. 4, the groove of the through groove 46 ′ of the core hinge 45 is formed. Due to the biasing force generated by the narrow width, a softer feeling of moderation can be obtained, which is advantageous.

[0029]

[Effect of device]

 As described above, in the center hinge structure of the automobile sun visor of the present invention, the center hinge is formed with the elongated groove extending in the longitudinal direction. By setting the phase of the long groove so that the center hinge can be elastically deformed, when the center hinge is fitted in or pulled out from a predetermined locking member provided in the vehicle interior, the elastic deformation caused by the elastic deformation is generated. You will be able to get a sense of moderation with the power.

Then, the light-shielding plate is composed of a skeleton core portion and a skin covering the core portion, and the center hinge covers the core hinge integrally provided on the core portion and the outer peripheral surface of the core hinge. By covering the core part and core hinge of the shading plate continuously and integrally by the above-mentioned skin, after covering the thin core wire with the skin once in the assembly process, Furthermore, it is not necessary to perform a troublesome work such as covering the outer pipe to increase the pipe diameter, and by setting the core hinge to an appropriate thickness in advance, it is sufficient as a locked member when it is covered with the skin. The center hinge of thickness is completed. Therefore, the number of parts can be reduced as compared with the conventional one, and the man-hours for assembling the sun visor can be greatly reduced, which is advantageous in reducing the manufacturing cost.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an example of an automobile sun visor to which a center hinge structure according to the present invention is applied.

FIG. 2 is a partially cutaway enlarged perspective view of a main part of FIG.

FIG. 3 is a partially cutaway enlarged perspective view of a main part showing another example of the center hinge structure according to the present invention.

FIG. 4 is a perspective view illustrating a sun visor to which a conventional center hinge structure is applied.

FIG. 5 is a cross-sectional view illustrating a conventional center hinge structure.

[Explanation of symbols]

 1 sun visor 2 support axis 21 horizontal axis 22 vertical axis 3 light-shielding plate 31 core part 32 pad part 33 skin 34 welding part 4, 4'center hinge 41, 45 core hinge 43 hinge part skin 44 hinge welding part 46 long groove 46 'through groove ( Long groove)

Claims (2)

[Scope of utility model registration request] 1. A light shielding plate is rotatably supported around a support shaft provided in a vehicle compartment, and a cylindrical center hinge is provided on the extension line of the support shaft of the light shielding plate in parallel with the support shaft. The center hinge has a center hinge structure of a sun visor for an automobile, which is configured to be attachable to and detachable from a center adapter fixed in a vehicle compartment, wherein the center hinge is formed with a long groove extending in a longitudinal direction. Center hinge structure of automobile sun visor. 2. The light-shielding plate comprises a skeleton core portion,
The center hinge comprises a core hinge integrally formed on the core portion, and a skin covering the outer peripheral surface of the core hinge, and the center hinge comprises a skin covering the core portion. The center hinge structure for an automobile sun visor according to claim 1, wherein the core hinge and the core hinge are continuously and integrally covered.