CN201764448U - Pivot structure with angle limitation - Google Patents

Abstract

The pivoting structure of the utility model is provided with a first pivoting body and a second pivoting body which are respectively connected with a base, a lamp arm or a lamp shade and other desk lamp parts; the first pivot body is provided with a sleeve, the second pivot body is provided with a hollow shaft rod for relatively extending into the sleeve of the first pivot body, the hollow shaft rod is provided with at least one friction fit part for forming a rotating friction positioning effect with the sleeve, the sleeve and the hollow shaft rod are respectively provided with a first stop block and a second stop block, and when the hollow shaft rod of the second pivot body extends into the sleeve of the first pivot body to be positioned, the first stop block and the second stop block mutually enter the rotating stroke of the other stop block. The desk lamp parts connected with the first and second pivoting bodies can be limited to rotate only in a preset angle by the interference action of the first and second stop blocks, so that the damage of related components caused by over-rotation of the two desk lamp parts is avoided.

Description

Pivot structure with angle limitation

technical field

The utility model relates to a pivoting structure applied to a desk lamp, in particular to a pivoting structure which allows the desk lamp parts to rotate relative to each other within a predetermined angle and avoids damage to related components due to excessive rotation of the two desk lamp parts.

Background technique

Generally, indoor lighting mainly relies on lamps installed on the ceiling, but with the increase of furnishings, it is inevitable that there will be areas with weak lights or blocked lights, and are limited by the design of related moving lines. The desk or desk is set in a corner with weak lighting; therefore, in order to avoid the discomfort caused by reading in a weak indoor lighting place, a desk lamp is generally placed on the desk or desk for reading or paperwork use.

At present, the common table lamp is nothing more than a combination of parts such as a base, a lamp arm and a lampshade, and is provided with a number of pivoting structures for adjusting the angle between the base and the lamp arm or between the lamp arm and the lampshade. Allows the lampshade to be extended to a better use position.

The pivoting structures commonly used in table lamps are mostly provided with pivot lugs on the two pivotally connected main bodies, and a bolt is threaded and locked between the pivot lugs of the two main bodies. The pivot ears of the two main bodies are clamped and fixed so that the desk lamp maintains the adjusted posture; and, when the bolts are loosened, the included angle of the two main bodies can be adjusted to change the posture of the desk lamp.

In actual use, tools must be used to turn the bolts smoothly, and tools must also be used to tighten the bolts, so it is extremely inconvenient to use; moreover, the wires of many desk lamps pass through the lamp arm from the base and then enter the inside of the lampshade. The light source assembly is electrically connected; therefore, the two desk lamp parts that can be rotated relative to each other should preferably be limited to rotate within a predetermined angle, so as to avoid excessive rotation that may break the wires that pass through them, or cause related components to be damaged. damage.

Contents of the invention

In view of this, the main purpose of the present utility model is to provide a convenient operation of the desk lamp, and to allow the relative rotation of the desk lamp parts only within a predetermined angle, so as to avoid pivoting of related components caused by excessive rotation of the two desk lamp parts structure.

To achieve the above purpose, the pivoting structure of the present utility model includes: a first pivoting body and a second pivoting body; wherein, the first and second pivoting bodies are respectively used to connect with the lamp parts such as the base, the lamp arm or the lampshade. connection, the first pivot body is provided with a sleeve, the second pivot body is provided with a hollow shaft for relatively extending into the sleeve of the first pivot body, and the hollow shaft is provided with at least one friction The matching part is used to form a rotation positioning function with the sleeve, and the sleeve and the hollow shaft are respectively provided with first and second stoppers.

When the hollow shaft rod of the second pivoting body extends into the sleeve of the first pivoting body to the position, the first and second stoppers enter into each other's rotation stroke; therefore, the first and second stoppers can be used to The interfering effect of the blocks limits the rotation of the desk lamp parts connected to the first and second pivoting bodies only within a predetermined angle, so as to avoid damage to related components due to excessive rotation of the two desk lamp parts.

In addition, the second pivoting body is provided with a barb at the tail end of the hollow shaft to relatively protrude from the sleeve of the first pivoting body and form a buckling effect with the outer edge of the sleeve to prevent the first , The second pivoting body is loose. And, each friction fit part is formed by at least two protruding points, and the outer diameter of the friction fit part surrounded by the at least two protruding points is slightly larger than the hole diameter of the sleeve; , the sleeve can be slightly elastically deformed under the action of the friction fit portion, so that the hollow shaft and the sleeve form a rotational positioning effect, so that the first and second pivoting bodies are kept in the adjusted state. Moreover, as long as the first and second pivoting bodies are turned by hand, the first and second pivoting bodies can be relatively rotated, which is convenient for the user to adjust the desk lamp components to which the first and second pivoting bodies belong to a suitable angle.

Description of drawings

Fig. 1 is a reference diagram of the use and configuration of the pivoting structure of the first embodiment of the utility model;

Fig. 2 is an exploded view of the pivoting structure of the first embodiment of the utility model;

Fig. 3 is a reference diagram of the use and configuration of the pivoting structure of the second embodiment of the present invention;

Fig. 4 is an exploded view of the pivoting structure of the second embodiment of the present invention.

Explanation of reference numerals: 10-pivot structure; 11-first pivot body; 111-sleeve; 112-first stop; 12-second pivot body; 121-hollow shaft; 122-second stop block; 123-barb; 124-groove; 125-friction fit; 126-bump; 13-elastic washer; 20-lamp parts.

Detailed ways

Below according to the technical means of the present invention, enumerate the mode that is suitable for the implementation of the present invention, and cooperate drawing description as follows:

As shown in Fig. 1 and Fig. 2, the pivoting structure 10 with angle limiting function of the present invention includes: a first pivoting body 11, a second pivoting body 12; wherein:

The first pivoting body 11 can be used to connect with the desk lamp parts 20 such as the base, the lamp arm or the lampshade, or be integrally formed with the desk lamp parts 20 such as the base, the lamp arm or the lampshade, and the first pivoting body 11 is provided with a sleeve 111 , the sleeve 111 is preferably made of a plastic material with toughness, and a first stopper 112 is provided on the periphery of the sleeve 111 .

The second pivoting body 12 can be used to connect with the desk lamp parts 20 such as the base, the lamp arm or the lampshade, or be integrally formed with the desk lamp parts 20 such as the base, the lamp arm or the lampshade, and the second pivoting body 12 is provided with a hollow shaft The rod 121 is inserted into the sleeve 111 of the first pivoting body 11, and a second block 122 is provided on the hollow shaft 121. The second block 122 is integrally formed and provided with a ring, so that The second block 122 is fixed on the hollow shaft 121 by using the ring, and when the hollow shaft 121 of the second pivot body 12 extends into the sleeve 111 of the first pivot body 11 to position, The first and second stoppers 112, 122 can be made to enter each other's rotation stroke, and the interference of the first and second stoppers 112, 122 can be used to limit the movement of the first and second pivoting bodies 11 and 12. The connected desk lamp parts can only be rotated within a predetermined angle.

In addition, the second pivoting body 12 is provided with a barb 123 at the tail end of the hollow shaft 121, and a groove 124 with a predetermined depth is provided on the tail end of the hollow shaft 121, so that the two sides of the groove 124 The barb 123 has an elastic contraction space, so that the barb 123 forms a fastening effect with the outer edge of the sleeve 111 through the sleeve 111 to prevent the first and second pivoting bodies 11 , 12 from loosening.

And, at least one friction fit portion 125 is provided on the hollow shaft 121 to form a rotational positioning effect with the sleeve 111, and each friction fit portion 125 is formed by at least two convex points 126, and the at least two convex points 126 The outer diameter of the enclosed friction fit portion 125 is slightly larger than the bore diameter of the sleeve 111 .

When the hollow shaft 121 penetrates into the sleeve 111 to be positioned, the sleeve 111 can be slightly elastically deformed under the action of the friction fit portion 125, so that the hollow shaft 121 and the sleeve 111 form a rotational positioning effect, Keep the first and second pivoting bodies 11, 12 in the adjusted state, and as long as the first and second pivoting bodies 11, 12 are turned by hand, the first and second pivoting bodies 11, 12 can be relatively Rotation facilitates the user to adjust the desk lamp component 20 (the lampshade shown in the figure) to which the first and second pivoting bodies 11 and 12 belong to to a suitable angle. In particular, the second pivoting body 12 can be provided with a predetermined number of friction fitting parts 125 at different axial positions of the hollow shaft 121, and it is preferable that the protruding points 126 between adjacent friction fitting parts 125 are arranged in a staggered manner. , so that the angle adjustment of each lamp component 20 is more stable and reliable.

As shown in Figures 3 and 4, the first pivot body 11 can also have its first stopper 112 located on the inner ring of the sleeve 111; and the second pivot body 12 belongs to the second stopper 122 It can also be applied externally, or integrally arranged on the hollow shaft 121 as shown in the figure, and an elastic washer 13 is arranged between the hollow shaft 121 and the sleeve 111 to compensate for the hollow shaft 121 and the sleeve 111. The clearance of the sleeve 111 increases the relative rotation stability of the first and second pivot bodies 11 and 12 .

Due to the pivoting structure of the utility model with angle limiting function, the interference of the first and second stoppers 112, 122 can be used to limit the desk lamp component 20 connected to the first and second pivoting bodies 11, 12 at a predetermined angle. Relatively rotate within the range, and can indeed fix the adjusted angle of the desk lamp part 20; therefore, it can be applied between the base and the lamp arm (as shown in Figure 3), between the lamp arm and the lamp arm, or between the lamp arm and the lamp arm. Between the lampshade and the lamp arm (as shown in Fig. 1 and Fig. 3 ) and other different parts are required to effectively avoid the possibility of breaking the wires inserted between them due to excessive rotation, or causing damage to related components.

To sum up, the utility model provides a better and feasible pivoting structure for desk lamps, and an application for a utility model patent is submitted according to the law; moreover, as shown in the above implementation description and accompanying drawings, the preferred embodiment of the utility model, This is not to limit the present utility model. Therefore, all similar or identical structures, devices, and features of the present utility model shall fall within the creation purpose and scope of the patent application of the present utility model.

Claims (7)

1. the pivot structure with angle limits function is characterized in that, includes:

One first inverted impulse body is provided with a sleeve, and peripheral place is provided with one first block at this sleeve;

One second inverted impulse body is provided with a hollow axostyle for stretching in the sleeve of this first inverted impulse body, is provided with one second block in addition on this hollow axostyle; And,

The hollow axostyle of this second inverted impulse body stretches into the sleeve of this first inverted impulse body to the location, can make this first, second block enter mutually in the other side's the rotational travel.

2. the pivot structure with angle limits function as claimed in claim 1 is characterized in that, this second inverted impulse body in addition empty therein axostylus axostyle tail end is provided with barb in order to the sleeve that stretches out first inverted impulse body relatively and constitute one with the outer rim of sleeve and buckle the effect of holding.

3. the pivot structure with angle limits function as claimed in claim 1 is characterized in that, this second inverted impulse body in addition empty therein axostylus axostyle tail end is provided with barb in order to the sleeve that stretches out first inverted impulse body relatively and constitute one with the outer rim of sleeve and buckle the effect of holding; This hollow axostyle tail end end face is provided with the groove of a desired depth in addition, makes the barb of groove both sides have an elastic shrinkage space.

4. the pivot structure with angle limits function as claimed in claim 1, it is characterized in that, this hollow axostyle is provided with at least one friction fit portion, and each friction fit portion is made of at least two salient points, and the friction fit portion external diameter that this at least two salient points surrounded is greater than the aperture of this sleeve.

5. the pivot structure with angle limits function as claimed in claim 1, it is characterized in that, this hollow axostyle is provided with at least one friction fit portion, and each friction fit portion is made of at least two salient points, and the friction fit portion external diameter that this at least two salient points surrounded is greater than the aperture of this sleeve; This sleeve is made by the plastic cement material with strong a piece of wood serving as a brake to halt a carriage characteristic.

6. the pivot structure with angle limits function as claimed in claim 1, it is characterized in that, this hollow axostyle is provided with at least one friction fit portion, and each friction fit portion is made of at least two salient points, and the friction fit portion external diameter that this at least two salient points surrounded is greater than the aperture of this sleeve; This second inverted impulse body different axial positions of empty axostylus axostyle therein is provided with the friction fit portion of predetermined quantity, and the salient point between the adjacent friction fit portion adopts interconnected.

7. the pivot structure with angle limits function as claimed in claim 1 is characterized in that, is lined with an elastic washer between this hollow axostyle and this sleeve.

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