CN201439927U

CN201439927U - Pivot connection structure of lamp arm and lamp shade

Info

Publication number: CN201439927U
Application number: CN2009201617304U
Authority: CN
Inventors: 黄火土
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-21
Filing date: 2009-07-21
Publication date: 2010-04-21
Anticipated expiration: 2019-07-21

Abstract

The utility model provides a pivot connection structure of a lamp arm and a lamp shade, which comprises a rotating shaft arranged between a lamp shade and a lamp arm, and a gasket, wherein the gasket is arranged in the pivot connection position of the rotating shaft and the lamp shade, and the edge of the gasket is convexly provided with a baffle towards the direction of the lamp shade; and the lamp shade protrudes and extends downwards to form a stopping block part opposite to the baffle of the gasket. When the rotating shaft and the lamp shade are relatively pivoted due to the adjustment of the position, the baffle of the gasket and the stopping block part of the lamp shade are mutually interfered so as to limit the lamp shade to rotate at less than 360 degree, thereby preventing the electric wire inside the lamp from being damaged due to the excessive rotation of the lamp shade.

Description

Arm and lampshade joint structure

Technical field

The utility model relates to a kind of joint structure that is applied to desk lamp, relates in particular to a kind of connection lampshade and arm, adjusts the pin-jointed structure of angle in order to the location.

Background technology

Existing desk lamp respectively is provided with a joint to link lampshade and lamp socket at the arm two ends, make the user can adjust the high and low position of lampshade arbitrarily, in addition, one joint structure further is set between joint and lampshade, the illumination of lampshade level angle is provided, lampshade not only can be done outside high and low the moving, and can pass through joint structure, make lampshade do left and right rotation, reach the flexibility of the preferable adjustment irradiating angle of desk lamp.

In the above-mentioned structure,, when adjusting the lampshade angle, rotate through when causing the lamp interior electric wire to reverse, so the structure that prevents lampshade 360 degree rotations must be set in joint structure for avoiding the user because power line must pass the joint by arm and be connected in lampshade.

See also Fig. 1, shown in Figure 2, constitutional diagram is analysed and observe in the existing joint structure three-dimensional exploded view and the side of lampshade 360 degree rotations of preventing, described joint structure is one to be arranged on the rotating shaft 3 between lampshade 1 and the arm 2, described rotating shaft 3 sides are established one first projection 4, lampshade 1 is with respect to outstanding downwards second projection 5 that is extended with of first projection 4 of described rotating shaft 3, when rotating shaft 3 is pivoted relative to each other because of adjusting the position with lampshade 1, first projection 4 of rotating shaft 3 interferes with each other with second projection 5 of lampshade 1, can limit lampshade less than 360 degree rotations, avoid just described, anode power cord continues to twine mutually and twists off.

Above-mentioned existing pivot structure, though can reach the purpose that prevents lampshade 360 degree rotations, but rotating shaft and desk lamp all are plastic cement materials, in use for some time, both sides plastics wearing and tearing can cause the elasticity deficiency, make can't be firm between lampshade and the arm the location, so this creator develops a kind of more nonabradable pivot structure, with the shortcoming of improvement prior art.

Summary of the invention

Main purpose of the present utility model is a kind of lampshade that limits less than 360 degree rotations, to avoid the excessive and joint structure that causes the lamp interior electric wire to damage of the lampshade anglec of rotation.

For reaching above-mentioned purpose, the utility model arm and lampshade joint structure are made up of a rotating shaft and a pad that is arranged between lampshade and the arm, wherein, pad is arranged on rotating shaft and lampshade pivot points, the edge is convexly equipped with a baffle plate to the lampshade direction, and lampshade is with respect to the outstanding downwards stopper section that is extended with of the baffle plate of described pad, when rotating shaft is pivoted relative to each other because of the adjustment position with lampshade, the baffle plate of pad and the stopper section of lampshade interfere with each other, and can limit lampshade less than 360 degree rotations.

During enforcement, described rotating shaft further comprises first projection that is positioned at side bottom, and pad is provided with a registration holes with respect to first projection, can be fixed in the rotating shaft when making pad be sheathed on rotating shaft, allow the plate washer of pad on the lampshade rotate path, promptly form backstop action, stop lampshade 360 degree rotations.

In addition, the baffle plate of described pad and registration holes can utilize the sheet metal punching press one-body molded, allow pad stamp out kink and have elasticity simultaneously, when lampshade is relative with rotating shaft when articulating, the pad kink produces reverse elastic restoring force because of being driven plain, so can increase friction between rotating shaft and the lampshade, lampshade is adjusted be difficult for after the angle loosening.

In addition, when described lampshade is implemented, can the one pivot joint ring that extends be set downwards with the rotating shaft pivot points, described pivot joint ring is provided with for the stopper section, and with respect to first projection of rotating shaft one second projection is set in inner edge, when rotating shaft was connected with the pivot joint ring, described second projection and first projection interfered with each other, and can limit lampshade less than 360 degree rotations; Cooperate the baffle plate of aforementioned pad and the stopper section of lampshade to interfere with each other, can reach dual spacing function.

Moreover, rotating shaft is provided with outwards outstanding locating ring with respect to articulating ring at the top periphery, and the U-shaped breach that runs through the locating ring top at the both sides opposite position, when the pivot joint ring of lampshade is inserted at the rotating shaft top, U type breach makes rotating shaft slightly be compression, be close proximity in the pivot joint ring, locating ring then is fixed in rotating shaft on the lampshade, rotating shaft is formed closely with lampshade be connected.

Compared to prior art, the utility model interferes with each other by the stopper section of metal baffle and lampshade, can improve the plastics wear problems, can reach again lampshade is limited in the suitable anglec of rotation, make lampshade less than 360 degree rotations, avoid the electric wire of lamp interior to damage.In addition, pad punching press kink and have elasticity so can increase the friction between rotating shaft and the lampshade, is not easy to become flexible after making lampshade adjust angle.

Description of drawings

Fig. 1 is the existing joint structure three-dimensional exploded view that prevents lampshade 360 degree rotations;

Fig. 2 is that constitutional diagram is analysed and observe in the existing joint structure side of lampshade 360 degree rotations that prevents;

Fig. 3 is a three-dimensional exploded view of the present utility model;

Fig. 4 is a side of the present utility model broken section constitutional diagram;

Baffle plate and stopper section stopped schematic diagram () mutually when Fig. 5 was the utility model rotation;

Baffle plate and stopper section stopped schematic diagram (two) mutually when Fig. 6 was the utility model rotation;

Baffle plate and stopper section stopped schematic diagram (three) mutually when Fig. 7 was the utility model rotation.

Description of reference numerals: 10-lampshade; The 11-stopper section; The 20-arm; The 30-rotating shaft; 31-first projection; The 32-locating ring; The 33-U v notch v; The 40-pad; The 41-baffle plate; The 42-registration holes; 50-articulates ring; 51-second projection.

The specific embodiment

As shown in Figure 3, three-dimensional exploded view of the present utility model, the utility model arm and lampshade joint structure are by a rotating shaft 30 that is arranged between lampshade 10 and the arm 20, and one pad 40 form, wherein, pad 40 is arranged on rotating shaft 30 and lampshade 10 pivot points, the edge is convexly equipped with a baffle plate 41 to lampshade 10 directions, lampshade 10 is with respect to the outstanding downwards stopper section 11 that is extended with of the baffle plate 41 of described pad 40, when rotating shaft 30 is pivoted relative to each other because of adjusting the position with lampshade 10, the baffle plate 41 of pad 40 interferes with each other with the stopper section 11 of lampshade 10, can limit lampshade less than 360 degree rotations.

Described rotating shaft 30 further comprises first projection 31 that is positioned at side bottom, pad 40 is provided with a registration holes 42 with respect to first projection 31, can be fixed in the rotating shaft 30 when making pad 40 be sheathed on rotating shaft 30, allow the plate washer 41 of pad 40 on the lampshade rotate path, promptly form backstop action, stop lampshade 360 degree rotations.

In addition, the baffle plate 41 of described pad 40 and registration holes 42 can utilize the sheet metal punching press one-body molded, allow pad stamp out kink and have elasticity simultaneously, when lampshade 10 during with rotating shaft 30 relative pivot joints, pad 40 kinks produce reverse elastic restoring force because of being driven plain, so can increase friction between rotating shaft 30 and the lampshade 10, be difficult for becoming flexible after making lampshade adjust angle.

In addition, when described lampshade 10 is implemented, can the one pivot joint ring 50 that extends be set downwards with rotating shaft 30 pivot points, described pivot joint ring 50 is provided with for stopper section 11, and with respect to first projection 31 of rotating shaft 30 one second projection 51 is set at inner edge, when rotating shaft 30 was connected with pivot joint ring 50, described first projection 31 and second projection 51 interfered with each other, and can limit lampshade less than 360 degree rotations; Cooperate the baffle plate 41 of aforementioned pad 40 and the stopper section 11 of lampshade 10 to interfere with each other, can reach dual spacing function.

As shown in Figure 4, side of the present utility model broken section constitutional diagram, rotating shaft 30 is provided with outwards outstanding locating ring 32 with respect to articulating ring 50 at the top periphery, and the U-shaped breach 33 that runs through locating ring 32 tops at the both sides opposite position, when the pivot joint of being inserted in lampshade 10 when rotating shaft 30 tops encircled 50, U type breach 33 made rotating shaft 30 slightly be compression, was close proximity to articulate in the ring 50, locating ring 32 then is fixed in rotating shaft 30 on the lampshade 10, rotating shaft 30 is formed closely with lampshade 10 be connected.

Extremely shown in Figure 7 as Fig. 5, baffle plate and stopper section stopped schematic diagram mutually when the utility model rotated, see also Fig. 3, when the user adjusts lampshade, together rotate with lampshade 10 stopper section, lampshade 10 below 11, the registration holes 42 of aforementioned again pad 40 engages with first projection 31 of rotating shaft 30 to form locatees, and makes pad 40 can not rotate together in company with lampshade 10; Therefore when the stopper section 11 of described lampshade 10 rotates to the baffle plate 41 that touches pad 40, stopper section 11 is stopped by baffle plate 41 and can't be rotated further, therefore can limit lampshade less than 360 degree rotations by described stopper section 11 and baffle plate 41, avoid lampshade 10 anglecs of rotation excessive and cause the electric wire of lamp interior to damage.

The utility model interferes with each other by the stopper section 11 of metal baffle 41 with lampshade 10, can improve the plastics wear problems, can reach again lampshade is limited in the suitable anglec of rotation, makes lampshade less than 360 degree rotations, avoids the electric wire of lamp interior to damage.In addition, therefore pad 40 punching press kinks and have elasticity can increase the friction between rotating shaft 30 and the lampshade 10, are not easy to become flexible after making lampshade 10 adjust angle.

With above-mentioned each be called and convenient describe technology contents of the present utility model and decided, but not in order to limit the interest field of this case; Therefore, the equivalence element conversion of being done according to the utility model spirit of this case, alternative all should be encompassed in the protection domain of this case such as.

Claims

1. arm and lampshade joint structure, it is characterized in that, formed by the rotating shaft that a pad and is arranged between lampshade and the arm, wherein, described pad is arranged on described rotating shaft and described lampshade pivot points, described gasket edge is convexly equipped with a baffle plate to described lampshade direction, and described lampshade is outstanding downwards to be extended with a stopper section, and described stopper section is corresponding with the baffle position of described pad.

2. arm as claimed in claim 1 and lampshade joint structure is characterized in that, described rotating shaft comprises first projection that is positioned at side bottom, and described pad is provided with a registration holes with respect to described first projection.

3. arm as claimed in claim 2 and lampshade joint structure, it is characterized in that, described lampshade is being provided with a pivot joint ring that extends downwards with described rotating shaft pivot points, described pivot joint ring is provided with for the stopper section, and described pivot joint ring is provided with one second projection at inner edge with respect to first projection of rotating shaft, and described second projection is positioned at the position with the described first protruding mutual backstop of determining.

4. arm as claimed in claim 1 and lampshade joint structure is characterized in that, described pad is that the sheet metal punching press is one-body molded, stamps out the rubber-like kink simultaneously.

5. arm as claimed in claim 1 and lampshade joint structure, it is characterized in that, described lampshade is being provided with a pivot joint ring that extends downwards with described rotating shaft pivot points, described rotating shaft is provided with outwards outstanding and locating ring on the described lampshade is fixed in described rotating shaft at the top periphery with respect to described pivot joint ring, and one to be positioned at side two corresponding and run through the U-shaped breach at described locating ring top.