JPH0446327Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fluorescent lamp that is used by placing it on a desk or the like.

[Prior Art] As shown in FIG. 4, this type of fluorescent stand includes a base 3 that is placed on a desk or the like, and an arm 2 that has a lamp 1 attached to its tip. There is one in which a lamp 2 is erected on a base 3 so that it can be raised or lowered, and the illumination direction of the lamp 1 can be changed depending on the raised or lowered state of the arm 2. In addition, in this fluorescent stand, the arm 2 and the base 3 are connected by a rotation connecting part 4 having a hinge structure, so that the arm 2 can be raised and lowered freely. Further, the portion connecting the lamp 1 and the arm 2 is also a rotational connection part 5 having a hinge structure similar to the rotational connection part 4, so that the illumination direction of the lamp 1 itself can be changed.

By the way, some fluorescent lamps of this type are designed to emit a continuous clicking sound when the arm 2 is rotated to improve the operating feeling. FIG. 5 shows the main structure of a conventional fluorescent lamp that produces this clicking sound. In this fluorescent stand, a hinge 6' is attached to the arm 2, and
A storage recess 7 is formed in the base 3 to connect the hinge 6', and a substantially cylindrical rotating part 6a' formed at the tip of the hinge 6' is rotatably stored in the storage recess 7. Arm 2 can be raised and lowered freely. A shaft hole 20 through which a rotating shaft is inserted is bored in both end surfaces of the rotating portion 6a', and a groove 10 is formed in one end surface extending from the vicinity of the shaft hole 20 to the outer peripheral edge. This groove 10
has a button 8 with retaining protrusions 8a protruding from both sides.
and an L-shaped spring 9. The button 8 is housed in a groove 10 so that its tip protrudes from the outer circumferential surface of the rotating portion 6a', and is movable back and forth from the outer circumferential surface of the rotating portion 6a' by a spring 9, one piece of which is in elastic contact with the rear end. . On the other hand, the inner surface of the storage recess 7 of the base 3 is formed in a shape that follows the shape of the outer peripheral surface of the rotating portion 6a', and a plurality of engagement teeth 11 are formed on this inner surface. Note that the tip of the button 8 engages between the engagement teeth 11 when the arm 2 is properly raised and lowered, as shown in FIG. In this fluorescent stand, when the arm 2 is operated, the button 8 moves over the engaging teeth 11, and when the button 8 goes over the engaging teeth 11, a clicking sound is emitted.

[Problems to be Solved by the Invention] However, with the click sound generation structure of the fluorescent lamp described above, the same sound is emitted both in the direction in which the arm 2 is raised and in the direction in which it is folded down. In other words, there was another problem in that the feeling when operating arm 2 was not good.

The present invention has been made in view of the above-mentioned points, and its purpose is to provide a fluorescent lamp with an even better operating feel of the arm.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a rotary connection part where the arm and the base are rotatably connected, on either the arm side or the base side. A plurality of engagement teeth are formed along the circumference around the rotation axis of the rotation coupling part, and the tip part elastically engages with one of the engagement teeth as the arm rotates. A mating leaf spring is provided, and the direction of the tip of the leaf spring is offset from the direction of the rotation axis.

(Function) As described above, this device shifts the direction of the tip of the leaf spring, whose tip elastically engages with one of the engaging teeth as the arm rotates, from the direction of the rotation axis, thereby varying the force applied to the tip of the leaf spring depending on the direction of operation of the arm, thereby producing a different clicking sound depending on the direction of operation.

(Embodiment) An embodiment of the present invention is shown in FIGS. 1 to 3.
As shown in FIG. 3, the base 3 of the fluorescent lamp of this embodiment includes a body 12 that accommodates the members constituting the rotational connection part 4 on the base 3 side, and a base on which the body 12 is placed. 13, and a cover 14 that is attached to cover the gap around the body 12 placed on the base 13. A hinge receiving portion 12a bulges upward on the rear upper surface of the body 12.
A hinge 6 having substantially the same shape as the hinge 6' of the conventional example is provided on the upper part of the hinge receiving portion 12a.
A receiving hole 15 is formed into which the rotating portion 6a at the tip of the holder is inserted, and circular holes 16 are formed on both end faces. A hinge fitting 17 for fixing the arm 2 in a predetermined raised and fallen state is housed inside the hinge receiving portion 12a. This hinge fitting 17 is formed in a substantially U-shape with an open top when viewed from the front, and has insertion holes 2 on both sides through which the shaft of a thumbscrew 22 serving as a rotation axis passes.
1 is perforated. In this rotating connection part 4, with the rotating part 6a of the hinge 6 inserted into the receiving hole 15 of the body 12, the thumbscrew 22 is inserted into the hinge 6 through the hole 16 and the insertion hole 21 of the hinge receiving part 12. By inserting it into the shaft hole 20 of the hinge 6, the hinge fitting 17 and the body 12 with the thumb screw 22,
Connect them together. A nut 23 is screwed onto the tip of this thumbscrew 22, and by tightening the thumbscrew 22 to the nut 23, the hinge 6 is fixed by sandwiching both end surfaces of the hinge 6 with both sides of the hinge fitting 17, and the arm 2 is fixed. It is kept in an upright position as appropriate. In addition, the rotation operation of the arm 2 is performed using the thumbscrew 22.
Do it loosely. This hinge metal fitting 17 is attached to the mounting base 18
By fixing the mounting base 18 to the body 12 with screws,
The hinge fitting 17 is housed and fixed within the hinge receiving portion 12a. The base 3 is connected to the back plate 1 with the base 13 in between.
Attach the body 12 to the 9 with screws, cover the circumference of the body 12, and attach the body 12 to the center.
The cover 14 is assembled by attaching to the base 13 a cover 14 in which an insertion hole 28 is formed to pass through the hinge receiving portion 12a and the front upper surface portion of the hinge receiving portion 12a.

Arm 2 is tubular with a hollow interior.
Insert the electric wire such as the power supply line to the lamp 1 into the base 3 through the electric wire insertion hole 24 bored in the mounting part of the hinge 6 and the insertion hole 25 inside the hinge 6.
It has a structure that leads you inward. The hinge 6 is attached to the arm 2 by screwing fixing parts 6b, which protrude from the base on both sides, to the arm 2.

Incidentally, in addition to the above-mentioned basic structure, this embodiment has the following structure in order to generate a click sound when the arm 2 is operated. In other words, as shown in FIG.
A leaf spring 27 is provided on the base 3 side as a sounding body whose tip engages with the arm 2 and generates a click sound when the arm 2 rotates. The leaf spring 27 has an L-shape in which the tip that engages with the engagement teeth 26 is folded back and overlapped.
The base is screwed and attached to a mounting base 18 via a hinge fitting 17. As shown in FIG. 1, the position of the tip of the leaf spring 27 is shifted to one side by a dimension L in FIG. There is.

In this embodiment, since the direction of the tip of the leaf spring 27 is offset from the center of rotation, when force is applied to tilt the arm ₂ as shown at F1 in FIG. 1, the leaf spring 27
The engagement between the tip of the plate spring 26 and the engagement tooth 26 is strong, and the force with which the tip of the leaf spring 26 overcomes the engagement tooth 26 is strong. Conversely, when force is applied to raise the arm 2 as shown at F ₂ in FIG. The force to overcome the tooth 26 becomes weaker. In other words, the force with which the tip of the leaf spring 26 overcomes the engagement teeth 26 differs depending on the direction in which the arm 2 is operated. Therefore, different click sounds can be emitted depending on the operating direction. By making the click sound different depending on the operating direction of the arm 2 in this way, the operating feeling of the arm 2 is improved. Moreover, the above-mentioned leaf spring 26
As the tip of the arm 2 passes over the engagement teeth 26, a click feeling can be obtained when operating the arm 2, similar to conventional fluorescent lamps of this kind.Moreover, this click feeling is also heavy when the arm 2 is folded down, and light when it is raised. The arm 2 has a good feel of operation. Furthermore, in this embodiment, unlike the conventional example, unevenness does not occur on the end surface of the rotating portion 6a, so the contact area between the side piece of the hinge fitting 17 and the end surface of the rotating portion 6a can be increased, and the surface of the rotating portion 6a can be expanded. There is also the advantage that sufficient frictional force between the end face and the side piece of the hinge fitting 17 can be obtained, and the fixed state of the arm 2 can be stabilized.

[Effects of the invention] As described above, the present invention has a rotating shaft of the rotating coupling part on either the arm side or the base side of the rotating coupling part where the arm and the base are rotatably connected. A plurality of engagement teeth are formed along the circumference around the center, and a leaf spring whose tip end elastically engages with one of the engagement teeth as the arm rotates. Since the direction of the tip of the leaf spring is offset from the direction of the rotation axis, the force applied to the tip of the leaf spring can be varied depending on the direction of operation, and therefore different click sounds can be generated depending on the direction of operation. , which improves the feeling of operation.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the main parts of an embodiment of the present invention, Fig. 2 is an exploded perspective view of the main parts of the same as above, Fig. 3 is an exploded perspective view of the main parts of the same as above, and Fig. 4 is a fluorescent lamp stand. 5 is an exploded perspective view of the main parts of the conventional example, and FIG. 6 is a sectional view of the same after assembly. Reference numeral 1 designates a lamp, 2 an arm, 3 a base, 4 a rotational connecting portion, 26 an engaging tooth, and 27 a leaf spring.

Claims (1)

[Scope of utility model registration request] A fluorescent stand in which an arm with a lamp attached to the tip is erected on a base placed on a desk or the like so that the arm can be raised and lowered, and the arm and the base are rotatably connected. A plurality of engagement teeth are formed along a circumference centered on the rotation axis of the rotational connection part on either the arm side or the base side of the part, and
On the other hand, a leaf spring is provided, the tip of which elastically engages with one of the engaging teeth as the arm rotates, and the direction of the tip of the leaf spring is shifted from the direction of the rotation axis. Features a fluorescent stand.