JP2560555Y2 - Hinge device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge device applied to a desk lamp or the like on which a lamp rotates.

[0002]

2. Description of the Related Art As shown in FIGS. 5 and 6, a conventional hinge device applied to a desk lamp is provided with a rotating plate 72 which is rotatable around the axis of a lamp shaft of a lamp 70. Hinge 74 is attached to the arm 76 by a screw 75 so as to be rotatable around an axis perpendicular to the lamp axis. 73 is a fixture, and 77 is a cord.

[0003] The rotation of the desk lamp around the axis of the lamp shaft is balanced in weight because the hinges 74 are provided at symmetrical positions of the lamp 70, and a constant holding force is ensured. Can be. On the other hand, the rotation about the axis perpendicular to the lamp axis requires an appropriate tightening force to support the weight of the lamp 70, and the lamp 70 can be easily moved when the appliance is carried or the appliance is inclined.
Must not rotate.

[0004] In this case, most of the desk lamps use a single base lamp, that is, a compact lamp.
Since the distance L between the center of gravity of the lamp and the screw 75 is short, the frictional force in the rotating direction does not cause a significant problem even if only the space between the screw 75 and the clamping surface is used.

[0005]

However, in this hinge device, since the screw 75 passes through the hinge 74, there is a clearance between the screw 75 and the hinge 74,
For this reason, when the lamp 70 is rotated on the rotating plate 72, the clearance of the screw 75 causes rattling, which may hinder the operational feeling.

Therefore, an object of the present invention is to provide a hinge device which can smoothly rotate in two directions without play.

[0007]

The hinge device according to the present invention has an inverted conical portion and a pair of cylindrical shafts projecting radially from both sides of an upper end portion of the inverted conical portion. A hinge having a male screw portion projecting in the axial direction from the lower end, a receiving base having a reverse conical fitting hole for fitting the reverse cone portion, and a male screw portion passing through the fitting hole; It is provided with a nut fastened to the lower surface of the receiving stand, and a pair of hinge holders for rotatably holding the pair of cylindrical shafts.

[0008]

According to the structure of the present invention, the hinge has an inverted conical portion fitted into the inverted conical fitting hole of the pedestal and tightened by a nut. Horizontal rotation is possible against the frictional resistance, and the hinge holder is rotatably sandwiched by the cylindrical axis of the hinge. Can be rotated. Therefore, for example, by attaching the lamp of the desk lamp to the hinge holder, the lamp can be horizontally rotated by the inverted conical portion with respect to the receiving stand, and the lamp can be rotated vertically by the cylindrical axis.

In this case, since the surface of the inverted conical portion and the inner surface of the fitting hole are frictional surfaces with respect to the receiving base, the holding force against rotation can be increased. It is possible to prevent the lamp from inadvertently rotating when tilted. In addition, since the inverted conical part of the hinge and the inverted conical fitting hole are fitted, smooth operation is possible without rattling even if the hinge holder is rotated around the cylindrical axis. In addition, the load applied to the hinge tool via the hinge holder can be received on the entire surface of the inverted cone, and the stress can be distributed to the contact surface of the inverted cone, so the load bearing strength is large and the size is increased. Never do.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. That is, the hinge device of the desk lamp includes the hinge 1, the receiving stand 2, the nut 3, and the hinge holders 4 and 5. The hinge 1 has an inverted conical portion 6 and a pair of cylindrical shafts 7 projecting radially from both sides of an upper end of the inverted conical portion 6.
Has a male screw portion 8 that protrudes in the axial direction from the lower end portion. The hinge 1 of the embodiment is a metal fitting, and has a wire insertion hole 23 at the center.
The main body 24 is formed with a cylindrical inverted conical portion 6 integrally formed on the lower surface of the main body 24 and communicating with the electric wire insertion hole 23, and the cylindrical shafts 7 protrude from both sides of the main body 24. I have. The male screw portion 8 is also formed in a cylindrical shape and communicates with the electric wire insertion hole 23 through the inverted conical portion 6.

The receiving base 2 has an inverted conical fitting hole 9 into which the inverted conical portion 6 is fitted. The pedestal 2 of the embodiment is a hinge cover attached to the upper end of a hollow cylindrical column 10 of a desk lamp with a screw 12. Reference numeral 11 denotes a female screw inserted into the column 10. The nut 3 is screwed into the male screw portion 8 penetrating through the fitting hole 9 and is fastened to the lower surface of the receiving base 2. In the embodiment, as shown in FIG.
3 and a flat washer 14 are interposed.

The pair of hinge holders 4 and 5 rotatably hold the pair of cylindrical shafts 7. In the hinge holder 4 of the embodiment, a notch 15 for loosely fitting the inverted conical portion 6 is formed at the center, and a semi-cylindrical groove 16 is formed on both sides of the notch 15 so as to slide on the peripheral surface of the cylindrical shaft 7. Connection holes 17 are formed on both sides. The hinge holder 5 is, as an example, a rectangular plate having a semi-cylindrical groove 37 that slides on the peripheral surface of the cylindrical shaft 7.
The wire hole 20 is formed so as to match the wire insertion hole 23, and the mounting hole 19 is formed so as to match the connection hole 17.

In the embodiment, the cylindrical shaft 7 is sandwiched between the pair of hinge holders 4 and 5, and the hinge holder 5
Is attached to the shade 25 of the lamp 32 with a screw 26. In the lamp 32, 27 is a socket base attached to the shade 25 by screws 28, 29 is its lamp socket, and 30 is a straight tube fluorescent lamp mounted on the lamp socket 29. Further, the male screw cylinder 34 at the lower end of the column 10 is fitted into the fitting hole 35 of the base 33 and fixed by the nut 36, and the column 10 is supported by the base 33. The electric wire 31 connected to the lamp socket 29 is guided to the base 33 through the electric wire hole 20, the electric wire insertion hole 23, and the support 10. 38 is a touch switch.

According to this embodiment, the hinge 1 has the inverted conical portion 6 fitted into the inverted conical fitting hole 9 of the receiving base 2 and is tightened by the nut 3. The table 2 can be rotated horizontally against its frictional resistance, and the hinge holders 4 and 5 are rotatably sandwiched by the cylindrical shaft 7 of the hinge 1. It is pivotable about an axis perpendicular to the axial direction of the inverted cone. Therefore, for example, by attaching the lamp 32 of the desk lamp to the hinge holders 4 and 5, the lamp 32 can be horizontally rotated by the inverted conical portion 6 with respect to the receiving stand 2 and the lamp 32
Can be rotated in the vertical direction by the cylindrical shaft 7.

In this case, since the surface of the inverted conical portion 6 and the inner surface of the fitting hole 9 serve as friction surfaces with respect to the cradle 2, the holding force against rotation can be increased. It is possible to prevent the lamp 32 from rotating carelessly when carrying or tilting the appliance. That is,
In the desk lamp of this embodiment, since the straight tube fluorescent lamp 30 is long, the distance between the center of gravity of the shade 25 and the inverted truncated cone 6 is increased, and the lamp 32 is easily turned in the horizontal direction. For example, when the lamp 32 is easily rotated, such as when the lamp 32 is slightly tilted, the user may inadvertently hit the lamp 32 and cause danger, but these dangers can be prevented.

Since the inverted conical portions 6 of the hinges 4 and 5 and the inverted conical fitting holes 9 are fitted, the hinge holders 4 and 5 are fitted.
Even if it is rotated around the cylindrical shaft 7, it is possible to perform a smooth operation without rattling and to apply a load applied to the hinge 1 via the hinge holders 4 and 5 to the inverted conical portion 6.
And the stress can be distributed to the contact surface of the inverted conical portion 6, so that the load bearing strength is large and the size is not increased.

[0017]

According to the hinge device of the present invention, since the surface of the inverted conical portion and the inner surface of the fitting hole are frictional surfaces with respect to the receiving base, the holding force against rotation can be increased. In the case of a desk lamp, careless rotation of the lamp when carrying or tilting the appliance can be prevented.
In addition, since the inverted conical part of the hinge and the inverted conical fitting hole are fitted, smooth operation is possible without rattling even if the hinge holder is rotated around the cylindrical axis. In addition, the load applied to the hinge tool via the hinge holder can be received on the entire surface of the inverted cone, and the stress can be distributed to the contact surface of the inverted cone, so the load bearing strength is large and the size is increased. There is an effect that it does not do.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a desk lamp to which an embodiment of the present invention is applied.

FIG. 2 is a partial sectional view thereof.

FIG. 3 is a cross-sectional view showing a hinge and a receiving base.

FIG. 4 is an external perspective view of a desk lamp.

FIG. 5 is a perspective view of a conventional example.

FIG. 6 is a partially enlarged sectional view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hinge tool 2 Cradle 3 Nut 4,5 Hinge holder 6 Reverse cone part 7 Cylindrical shaft 8 Male screw part 9 Fitting hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A male screw portion having an inverted conical portion, a pair of cylindrical shafts projecting radially from both sides of an upper end portion of the inverted conical portion, and an axially projecting male screw portion projected from a lower end portion of the inverted conical portion. A hinge having a receiving base having an inverted conical fitting hole for fitting the inverted conical part, a nut screwed into a male screw part penetrating the fitting hole and fastened to a lower surface of the receiving base, A hinge device comprising: a pair of hinge holders that rotatably sandwich the pair of cylindrical shafts.