CN201764448U

CN201764448U - Pivoting structure with angle limiting function

Info

Publication number: CN201764448U
Application number: CN2010202639464U
Authority: CN
Inventors: 黄火土
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-14
Filing date: 2010-07-14
Publication date: 2011-03-16
Anticipated expiration: 2020-07-14

Abstract

The utility model relates to a pivoting structure, which is provided with a first pivoting piece and a second pivoting piece respectively connected with desk lamp parts as a base, a lamp arm, a lampshade or the like. The first pivoting piece is provided with a sleeve, the second pivoting piece is provided with a hollow shaft rod for relatively extending into the sleeve of the first pivoting piece, the hollow shaft rod is provided with at least one friction match portion, the friction match portions and the sleeve generate rotational friction positioning effect, the sleeve and the hollow shaft rod are respectively provided with a first block and a second block, and when the hollow shaft rod of the second pivoting piece extends into the sleeve of the first pivoting piece and positioned, the first block and the second block enter rotation strokes of each other. The desk lamp parts connected with the first pivoting piece and the second pivoting piece can be limited to be only able to rotate within a preset angle by aid of interference functions of the first block and the second block, thereby avoiding damage of related components due to excessive rotation of two desk lamp parts.

Description

Pivot structure with angle limits function

Technical field

The utility model relates to a kind of pivot structure that is applied to desk lamp, refers to that especially a kind of desk lamp parts that make only can relatively rotate in an angle of being scheduled to, and avoid the pivot structure that causes associated components to damage because of two desk lamp parts inordinate rotation.

Background technology

General indoor lighting is that the light fixture that dependence is arranged on the ceiling is main mostly, but increase along with the ornaments article, have the zone that light is more weak or light is blocked unavoidably, and be subject to the design of relevant moving-wire, desk or desk must be located at the more weak corner location of light; Therefore,, generally can further on desk or desk, place desk lamp, for reading or using when carrying out paperwork for avoiding reading the discomfort that is caused in the more weak place of indoor light.

At present common desk lamp is nothing more than being combined by parts such as base, arm and lampshades, and be provided with the pivot structure that quantity does not wait, supply to adjust between base and the arm or the angle between arm and the lampshade, and then allow lampshade be extended to preferable use location.

The pivot structure that similar desk lamp is commonly used is many to be respectively equipped with the pivot ear on two main bodys that are articulated, wear by a bolt in addition and be locked between the pivot ear that two main bodys overlap mutually, utilize the locking effect of bolt, the pivot ear clip system of two main bodys is fixed, make desk lamp remain on adjusted attitude; And, under the state that bolt loosens, can be for the angle of adjusting these two main bodys, to change the attitude of desk lamp.

When reality is used, must utilize instrument rotating bolt smoothly, and must utilize instrument that bolt is screwed equally, therefore very inconvenience in the use; Moreover the electric wire of many desk lamps enters the inner and relevant source assembly electric connection of lampshade after penetrating arm by base again; Therefore, can preferably can be limited in the predetermined angle for two desk lamp parts in relative rotation and rotate, the electric wire that is placed through therebetween may be pulled apart to avoid excessively rotation, or cause associated components to damage.

Summary of the invention

In view of this, main purpose of the present utility model is promptly providing desk lamp a kind of easy to operate, and makes the desk lamp parts only can relatively rotate in an angle of being scheduled to, and avoids the pivot structure that causes associated components to damage because of two desk lamp parts inordinate rotation.

For reaching above-mentioned purpose, pivot structure of the present utility model includes: first inverted impulse body, second inverted impulse body; Wherein, first, second inverted impulse body is respectively in order to be connected with desk lamp parts such as base, arm or lampshades, this first inverted impulse body is provided with a sleeve, this second inverted impulse body is provided with a hollow axostyle for stretching in the sleeve of first inverted impulse body relatively, this hollow axostyle is provided with at least one friction fit portion, rotate positioning action in order to form, and on sleeve and hollow axostyle, be respectively equipped with first, second block with sleeve.

The sleeve that stretches into first inverted impulse body when the hollow axostyle of second inverted impulse body is when locating, and this first, second block enters in the other side's the rotational travel mutually; Therefore, can utilize the interference effect of first, second block to limit desk lamp parts that first, second inverted impulse body connects and only can in a predetermined angle, rotate, avoid causing the associated components damage because of two desk lamp parts inordinate rotation.

In addition, 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, in case first, second inverted impulse body gets loose.And each friction fit portion is made of at least two salient points, the friction fit portion external diameter that this at least two salient points surrounded and be slightly larger than the aperture of sleeve; When the hollow axostylus axostyle penetrates sleeve when locating really, can under the effect of its friction fit portion, make slightly strain of this sleeve, and then make hollow axostyle and sleeve form the rotation positioning action, allow first, second inverted impulse body remain on adjusted state.And,, make things convenient for the user that the desk lamp parts under first, second inverted impulse body are adjusted to suitable angle as long as first, second inverted impulse body of free-hand switching can relatively rotate first, second inverted impulse body.

Description of drawings

Fig. 1 is that the pivot structure of the utility model first embodiment uses the configuration reference diagram;

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

Fig. 3 is that the pivot structure of the utility model second embodiment uses the configuration reference diagram;

Fig. 4 is the pivot structure exploded view of the utility model second embodiment.

Description of reference numerals: 10-pivot structure; 11-first inverted impulse body; The 111-sleeve; 112-first block; 12-second inverted impulse body; The 121-hollow axostyle; 122-second block; The 123-barb; The 124-groove; 125-friction fit portion; The 126-salient point; The 13-elastic washer; 20-desk lamp parts.

The specific embodiment

Following foundation technological means of the present utility model lists the mode that is suitable for the utility model enforcement, and cooperates graphic explanation as back:

As shown in Figures 1 and 2, the pivot structure 10 that the utlity model has the angle limits function includes: one first inverted impulse body 11, one second inverted impulse body 12; Wherein:

This first inverted impulse body 11 can be in order to be connected with desk lamp parts 20 such as base, arm or lampshades, or with desk lamp parts 20 one machine-shapings such as base, arm or lampshade, this first inverted impulse body 11 is provided with a sleeve 111, this sleeve 111 becomes goodly by the plastic cement material with strong a piece of wood serving as a brake to halt a carriage characteristic is made, and is provided with one first block 112 in this sleeve 111 peripheral places.

This second inverted impulse body 12 can in order to base, desk lamp such as arm or lampshade parts 20 connect, or and base, the 20 one machine-shapings of desk lamp such as arm or lampshade parts, this second inverted impulse body 12 is provided with a hollow axostyle 121 for being inserted in the sleeve 111 of this first inverted impulse body 11, and be provided with one second block 122 in this hollow axostyle 121, this second block 122 is one of the forming and is provided with a ring, make to utilize this ring that this second block 122 is fixed on this hollow axostyle 121, and when the hollow axostyle 121 of second inverted impulse body 12 stretches into the sleeve 111 of this first inverted impulse body 11 to the location, can make this first, second block 112,122 enter in the other side's the rotational travel mutually, utilize this first, second block 112,122 interference effect limit this first, second inverted impulse body 11, the 12 desk lamp parts that connected only can rotate in an angle of being scheduled to.

In addition, empty therein in addition axostylus axostyle 121 tail ends of this second inverted impulse body 12 are provided with barb 123, be provided with the groove 124 of a desired depth in addition at these hollow axostyle 121 tail end end faces, make the barb 123 of groove 124 both sides have an elastic shrinkage space, to make things convenient for barb 123 to buckle the effect of holding, prevent that first, second inverted

impulse body

11,12 from getting loose by the sleeve 111 and the outer rim formation one of this sleeve 111.

And, this hollow axostyle 121 is provided with at least one friction fit portion 125, in order to form the rotation positioning action with sleeve 111, each friction fit portion 125 by at least two salient points 126 constitute friction fit portion 125 external diameters that these at least two salient points 126 are surrounded and the aperture that is slightly larger than this sleeve 111.

When hollow axostylus axostyle 121 penetrates sleeve 111 really to the location, can be under the effect of its friction fit portion 125, make slightly strain of this sleeve 111, and then make hollow axostyle 121 and sleeve 111 form the rotation positioning action, allow first, second inverted

impulse body

11,12 remain on adjusted state, and, make things convenient for the user that the desk lamp parts 20 (lampshade as shown in FIG.) under first, second inverted

impulse body

11,12 are adjusted to suitable angle as long as first, second inverted

impulse body

11,12 of free-hand switching can allow first, second inverted

impulse body

11,12 relatively rotate.Especially, this second inverted impulse body 12 can empty therein axostylus axostyle 121 different axial positions be provided with the friction fit portion 125 of predetermined quantity, and the salient point between the adjacent friction fit portion 125 126 adopts interconnected to be good, to make the angle adjustment of each desk lamp parts 20 more stable, reliable.

As shown in Figures 3 and 4, this first inverted impulse body 11 also can be located at its first block 112 inner ring of this sleeve 111; And second block 122 under this second inverted impulse body 12 can adopt outer add mode equally, or one is located on this hollow axostyle 121 as shown in the figure, and between this hollow axostyle 121 and this sleeve 111, be lined with an elastic washer 13, compensating the gap of this hollow axostyle 121 and this sleeve 111, and increase first, second inverted

impulse body

11,12 stability in relative rotation.

Because the pivot structure that the utlity model has the angle limits function can utilize the interference effect of first, second block 112,122 to limit desk lamp parts 20 that first, second inverted

impulse body

11,12 connected and relatively rotate in a predetermined angular range, and can be really with desk lamp parts 20 adjusted fixed angle; So, can be applicable to (as shown in Figure 3) between base and the arm, be applied between arm and the arm, or be applied to the demand of different parts such as (as Fig. 1 and shown in Figure 3) between lampshade and the arm, the electric wire that is placed through therebetween may be pulled apart because excessively rotate effectively to avoid, or cause associated components to damage.

In sum, the utility model provides desk lamp one preferable feasible pivot structure, and the application of utility model patent is offered in the whence in accordance with the law; Moreover, shown in the above implementation and accompanying drawing, the utility model preferred embodiment, be not to limit to the utility model with this, therefore, approximate with structure of the present utility model, device, feature etc. such as or identical mutually, all should belong to of the present utility model founding within purpose and the claim.

Claims

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.