CN210511168U - Torsion-variable rotating mechanism and desk lamp - Google Patents

Abstract

The utility model provides a variable torsion's slewing mechanism, it includes the axis of rotation and overlaps in proper order and locates lock nut, elastic gasket, rotor plate, wear-resisting sleeve, the stationary blade of contradicting each other in the axis of rotation, wear-resisting sleeve with the stationary blade with the rotor shaft is fixed, the rotor plate can wind the axis of rotation rotates, a torsion spring is established to the cover on the wear-resisting sleeve, torsion spring's one end is fixed in on the stationary blade, the other end is fixed in on the rotor plate. The utility model discloses a slewing mechanism of variable torsion has the changeable advantage of torsion. The utility model also provides an adopt above-mentioned slewing mechanism's of variable torsion desk lamp.

Description

Torsion-variable rotating mechanism and desk lamp

Technical Field

The utility model relates to a desk lamp field especially relates to a slewing mechanism of variable torsion and adopt above-mentioned slewing mechanism's desk lamp.

Background

As shown in fig. 1, a table lamp with a rotating shaft structure used in a table lamp on the market at present mainly includes a lamp head 11, a lamp post 12, a base 13, a rotating structure 14 connected between the lamp post and the base 13, and a rotating structure 15 connected between the lamp post and the lamp head. Because of the rotating structure 14 and the rotating structure 15, the lamp post 12 can rotate relative to the base 13, so as to adjust the height of the lamp head 11, and the lamp head 11 can rotate relative to the lamp post 12, so as to adjust the irradiation direction of the lamp head.

As shown in fig. 2, a rotating structure adopted between a base and a lamp post of a common desk lamp is a constant torque rotating shaft, and is composed of a fixed block 11, a rotating block 12, a wear-resistant gasket 13, a butterfly gasket 14, a support gasket 15 and a lock nut 16. The working principle of the constant-torque rotating shaft is as follows: the constant torsion rotating shaft is acted on the wear-resistant gasket 13 through the butterfly-shaped gasket 13 and the supporting gasket 15 by virtue of positive pressure generated by locking of the locking nut, and under the action of the positive pressure, a constant torsion M is generated when the rotating block 12 rotates and is in a proportion of M to N plus one minus one plus one minus.

From the above formula, one can derive: the torsion of the rotating shaft is proportional to the locking force of the locking nut 16, the friction coefficient of the wear-resistant gasket 13 and the rotating block 12 and the diameter of the wear-resistant gasket 13. I.e. the torque of the rotating shaft is constant and opposite to the direction of rotation when these three parameters of the rotating shaft are determined.

As shown in fig. 3 and 4, since the torsion T generated by the gravity of the desk lamp is always downward and the torsion of the rotating shaft is opposite to the rotating shaft direction of the rotating shaft, when the user adjusts the lamp head downward, the force W applied by the user is M-T; when the user adjusts the lighthead upwards, the user needs to apply force W ═ M + T. Therefore, the force required when the user adjusts the lamp holder upwards is much larger than the force required when the user adjusts the lamp holder downwards, and especially for some relatively large table lamps, the user needs to press the base with one hand and the user experiences poor experience when the user adjusts the lamp holder with one hand.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a slewing mechanism of variable torsion and adopt above-mentioned slewing mechanism's desk lamp to make the lamp pole of desk lamp rotate to adjust more smooth-going, user experience is better.

The embodiment of the utility model provides an in, provide a variable torsion's slewing mechanism, it includes the axis of rotation and overlaps in proper order and locates lock nut, elastic gasket, rotor plate, wear-resisting sleeve, stationary blade in the axis of rotation and conflict each other, wear-resisting sleeve with the stationary blade with the rotor shaft is fixed mutually, the rotor plate can wind the axis of rotation rotates, a torsion spring is established to the cover on the wear-resisting sleeve, torsion spring's one end is fixed in on the stationary blade, the other end is fixed in on the rotor plate.

In the embodiment of the utility model, torsion spring adopts spring steel wire material shaping of buckling.

In the embodiment of the utility model provides an in, the stationary blade adopts two five metals stamping workpiece that stack together.

In the embodiment of the utility model provides an in, the rotor plate adopts two five metals stamping workpiece that stack together.

The embodiment of the utility model provides an in, be provided with first fixed slot on the fixed plate, be used for fixing torsion spring's one end, be provided with the second fixed slot on the rotating plate, be used for fixing torsion spring's the other end.

In the embodiment of the utility model provides an in, be provided with the screw thread in the axis of rotation, be used for the installation lock nut.

In the embodiment of the utility model, the elastic gasket is butterfly gasket.

The embodiment of the utility model provides an in, still provide a desk lamp, it includes lamp holder, lamp pole and base, lamp holder and lamp pole adopt foretell variable torsion's slewing mechanism to be connected.

The embodiment of the utility model provides an in, still provide a desk lamp, it includes lamp holder, lamp pole and base, base and lamp pole adopt foretell variable torsion's slewing mechanism to be connected.

Compared with the prior art, adopt in the desk lamp the utility model discloses a variable torsion's slewing mechanism the rotor with set up a torque spring between the stationary blade, when the rotor rotates along with the lamp pole of desk lamp, can drive torque spring and produce deformation to produce a torsion for the axis of rotation, through the deformation scope that sets up torque spring in advance, make torque spring produce the gravity that an ascending torsion offsets lamp pole and lamp holder, thereby realize that the user is when upwards rotating with downwards controlling the lamp pole, apply nearly the same dynamics can, improved user's use and experienced.

Drawings

Fig. 1 is a schematic structural diagram of a prior art LED desk lamp.

Fig. 2 is a schematic structural view of a prior art rotating mechanism.

Fig. 3 is a schematic diagram of the downward adjustment force of the LED desk lamp.

Fig. 4 is a schematic diagram of the downward adjustment force of the LED desk lamp.

Fig. 5 is a schematic cross-sectional structure diagram of a rotating mechanism according to an embodiment of the present invention.

Fig. 6 is a schematic perspective view of a rotating mechanism according to an embodiment of the present invention.

Fig. 7 is a schematic structural view of the desk lamp according to the embodiment of the present invention, wherein the base is connected to the lamp post.

Fig. 8 is a schematic cross-sectional view of a connecting portion between the base and the lamp post of the desk lamp in fig. 7.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The implementation of the invention is described in detail below with reference to specific embodiments,

referring to fig. 5 and 6, in an embodiment of the present invention, a rotation mechanism 2 with variable torque is provided, which includes a rotation shaft 20, and a lock nut 21, an elastic washer 22, a rotation piece 23, a wear-resistant sleeve 24, and a fixing piece 25, which are sequentially sleeved on the rotation shaft 20 and abut against each other. The wear sleeve 24 and the fixing piece 25 are fixed to the rotating shaft 20. The rotary piece 23 is rotatable about the rotary shaft 20. The elastic washer 22 is pressed between the lock nut 21 and the rotating piece 23.

The rotating shaft 20 is provided with a thread (not shown) for mounting the lock nut 21. The lock nut 21 is used for applying pressure to the elastic washer 22, so that the elastic washer 22 deforms and presses the rotating piece 23. The rotating plate 23 is pressed by the elastic washer 22 and the wear sleeve 24, thereby generating a torsion force that prevents the rotating plate 23 from rotating.

A torsion spring 26 is sleeved on the wear-resistant sleeve 24, one end of the torsion spring 26 is fixed on the fixing piece 25, and the other end is fixed on the rotating piece 23. The fixing plate 25 is provided with a first fixing groove 251 for fixing one end of the torsion spring 26, and the rotating plate 23 is provided with a second fixing groove 231 for fixing the other end of the torsion spring. The torsion spring 26 is used for generating a torsion force to the rotary piece 23 when the rotary piece 23 rotates.

In the embodiment of the present invention, the torsion spring 26 is made of spring steel wire material. The stationary blade 25 adopts two superimposed five metals stamping workpiece together. The rotating sheet 23 is made of two hardware stamping parts which are overlapped together. The elastic gasket 22 is a butterfly gasket.

The embodiment of the utility model provides an in, variable torsion's slewing mechanism's torsion divide into two parts, and partly torsion is because the normal pressure that produces behind the locking nut 21 locking, passes through elastic gasket 22, do and be in on the rotor plate 23, make the rotor plate 23 with produce frictional force between the wear-resisting sleeve 24, the produced torsion of this locking force is directly proportional with the diameter of wear-resisting sleeve, lock nut's locking force and the coefficient of friction between the friction piece, is a definite value after the axis of rotation equipment is accomplished. The other part of the torsion comes from the torsion spring 26, when the rotating piece 23 rotates, the torsion spring 26 is driven to rotate together through an angle, and at this time, the torsion spring 26 generates a torsion due to the deformation, and the torsion is in direct proportion to the rotation angle of the torsion spring 26.

As shown in fig. 7 and 8, the embodiment of the present invention provides a desk lamp structure, the rotating mechanism 2 with variable torque force is used for the rotation connection between the base 3 of the desk lamp and the desk lamp pole 4, the rotating mechanism 2 with variable torque force is fixed in the base 3 of the desk lamp, the movable block 23 is fixedly connected with the lower joint 41 of the desk lamp pole 4.

When being applied to the desk lamp specifically, the design idea of the rotating mechanism 2 with the variable torque force is as follows: under the condition that the lamp post and the lamp cap do not rebound when rotating, the torsion of the torsion spring is calculated to offset the torsion of the desk lamp caused by the gravity of the lamp cap and the lamp post, and then the torsion generated by the locking nut is adjusted to enable the total torsion of the rotating shaft to meet the use requirement of the desk lamp.

The embodiment of the utility model provides an among another kind of desk lamp structure, variable torsion's slewing mechanism 2 is used for the rotation between desk lamp holder and the lamp pole to be connected, at this moment, variable torsion's slewing mechanism 2 is fixed in the top of the lamp pole of desk lamp, the lamp holder fixed connection of movable block 23 and desk lamp.

To sum up, adopt in the desk lamp the utility model discloses a variable torsion's slewing mechanism the rotor with set up a torque spring between the stationary blade, when the rotor rotates along with the lamp pole of desk lamp, can drive torque spring and produce deformation to produce a torsion for the axis of rotation, through the deformation scope that sets up torque spring in advance, make torque spring produce the gravity that an ascending torsion offsets lamp pole and lamp holder, thereby realize that the user is when upwards rotating with downwards controlling the lamp pole, apply almost the same dynamics can, improved user's use and experienced.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. The utility model provides a variable torsion's slewing mechanism, its characterized in that includes the axis of rotation and overlaps in proper order and locate in the axis of rotation and the lock nut of mutual conflict, elastic gasket, rotor plate, wear-resisting sleeve, stationary blade, wear-resisting sleeve with the stationary blade with the axis of rotation is fixed, the rotor plate can wind the axis of rotation rotates, a torsion spring is established to the cover on the wear-resisting sleeve, torsion spring's one end is fixed in on the stationary blade, the other end is fixed in on the rotor plate.

2. The variable torque rotating mechanism according to claim 1 wherein the torsion spring is formed by bending a spring steel wire.

3. The variable torque rotary mechanism of claim 1 wherein the stator is formed as two superimposed metal stampings.

4. The variable torque rotary mechanism of claim 1 wherein the rotary plate is formed as two superimposed metal stampings.

5. The variable torque rotating mechanism according to claim 1, wherein a first fixing groove is formed in the fixing plate to fix one end of the torque spring, and a second fixing groove is formed in the rotating plate to fix the other end of the torque spring.

6. The variable torque rotating mechanism according to claim 1, wherein the rotating shaft is provided with a thread for mounting the lock nut.

7. The variable torque rotating mechanism according to claim 1 wherein the resilient spacer is a butterfly spacer.

8. A desk lamp, comprising a lamp head, a lamp post and a base, wherein the lamp head and the lamp post are connected by a rotating mechanism with variable torque as claimed in any one of claims 1 to 7.

9. A desk lamp comprising a lamp head, a lamp post and a base, wherein the base and the lamp post are connected by a rotating mechanism with variable torque as claimed in any one of claims 1 to 7.

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