CN2314236Y

CN2314236Y - Rotary holder for lampshade of desk lamp

Info

Publication number: CN2314236Y
Application number: CN 97249256
Authority: CN
Inventors: 岑东梅
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-11-18
Filing date: 1997-11-18
Publication date: 1999-04-14
Anticipated expiration: 2007-11-18

Abstract

The utility model relates to a rotary holder for the lamp cover of a desk lamp, which is composed of a support frame, a swivel mount, and a rotating shaft, wherein, the support frame is installed in a notch arranged at the middle part between the two side boards of the swivel mount, the rotating shaft is transversely inserted into one side board of the swivel mount from outside of the side board, the rotating shaft passes through the inner cavity of the support frame and penetrates out of the other side board of the swivel mount, and the rotating shaft is tightly locked by a convex shaft nut. An annular ring on-off fluted disk is respectively installed in one side board stepped hole and support frame stepped holes arranged at both sides of the point of the joint surface of the support frame and the side board of the swivel mount, a compression spring is sheathed on the convex extending outer circle of the convex shaft nut, and one end of the compression spring is bunted on the back of the on-off fluted disk. The position of rotation angles of the utility model can be realized by the on-off fluted disk compacted by the compression spring, the utility model has the advantages of easy use and firm position, and the utility model is suitable for various desk lamps.

Description

Desk lamp lampshade swivel joint

The utility model relates to the desk lamp in the daily necessities, a kind of specifically desk lamp lampshade swivel joint.

People are when using desk lamp, often need to change the angle of the relative desktop of lampshade, lampshade is raised or lowerd, satisfy different instructions for uses to change the light-illuminating angle, in the prior art, lampshade generally is to be placed on the bulb with the iron wire hoop clip, and the bulb head is spherical, thereby lampshade can be done universal rotation, the lampshade of this structure has simple in structure, advantage easy to use, but the iron wire hoop might shorten service life of bulb to the friction of bulb, and the angle adjustable of lampshade is less.Also have in the prior art use by the support swivel base with the hinged structure of bolt and nut, lampshade is fixed in swivel base, support is fixed in lamp socket, unclamps nut during use, rotates behind the lampshade fastening nut again, this structure does not influence bulb service life, the lampshade angle adjustable is also bigger, but will loosen, tighten nut during adjusting angle, uses cumbersome, and lampshade closes because of deadweight and rotates sometimes, locatees insecure.

The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of desk lamp lampshade swivel joint is provided, with the location that the clutch fluted disc of spring compression is realized rotational angle, easy to use, firm position.

The purpose of this utility model is achieved in that a kind of desk lamp lampshade swivel joint, is made up of support 1, swivel base 2 and rotating shaft 3, and support is connected in lamp socket, and swivel base is connected in bulb socket, and lampshade is housed on the bulb socket, it is characterized in that:

Support 1 is contained in the notch 23 in the middle of the

biside plate

21,22 of swivel base 2, and rotating shaft 3 is laterally inserted the inner chamber that passes support 1 and passed from another side plate 22 of swivel base 2 from the side plate 21 of swivel base outside, lock with protruding spindle nut 4;

At the composition surface place of support 1 with the side plate 22 of swivel base 2, annular clutch fluted disc 5 is housed in the macropore of the stairstepping endoporus 11 on support composition surface, annular clutch fluted disc 6 is housed in the aperture of the stairstepping endoporus 24 of side plate 22, fluted disc 5,6 end face respectively has radially protruding accordingly, recessed tooth 53,63 just in the engagement of described composition surface, the stairstepping macropore of side plate 22 holds the major part of protruding spindle nut, on protruding axle 42 cylindricals of this protruding axle spindle nut, be set with a compression spring 7, one end of this spring 7 contacts the major part inner face in protruding spindle nut 4, and end contacts in the back of annular clutch fluted disc 6 in addition;

The ladder macropore of the major part of described rotating shaft 3 and side plate 21 is with projection 301, and groove 302 is done circumferentially location;

The shoulder hole of installation clutch 5 and clutch 5 are with projection 51 on the described support, and groove 52 is done circumferentially location;

The shoulder hole and the clutch 6 of clutch 6 are installed on the described side plate 22 are done circumferentially location with projection 61, groove 62;

On major part 41 outer faces of the major part outer face of rotating shaft 3 and protruding spindle nut 4, respectively be shaped on the cross recess of using for

screwdriver

33 and 43.

The utility model has following actively useful effect:

1. the rotation of lampshade realizes by support, swivel base, rotating shaft, does not link with bulb, does not influence the service life of bulb.

2. the lampshade anglec of rotation is big, can satisfy various instructions for uses.

3. rotating mechanism is realized the location with the clutch fluted disc of spring compression, and firm position can be because of the lampshade deadweight change that drops.

4. easy to use.

5. good looking appearance.

This specification has the following drawings:

Fig. 1 is a user mode schematic diagram of the present utility model;

Fig. 2 is the structural representation of the lampshade swivel joint among Fig. 1, is the A-A parting view of Fig. 1;

Fig. 3 is the assembly exploded view among Fig. 2.

Accompanying drawing number:

1. support 11. shoulder holes

2. swivel base 21. swivel base side plates 22. swivel base side plates

23. notch 24. shoulder holes

3. rotating shaft 31. rotating shaft major parts 32. rotating shaft screw rods

33. the screwdriver slot on the rotating shaft major part

34. locating convex block 35. detents

4. protruding spindle nut 41. nut major parts 42. protruding axles

43. the screwdriver slot on the nut major part

5. clutch fluted disc 51. locating convex blocks 52. detents

53. end face tooth

6. clutch fluted disc 61. locating convex blocks 62. detents

63. end face tooth

7. compression spring

Detailed structure of the present utility model realizes having made detailed description in conjunction with the accompanying drawings in the relevant literal of goal of the invention in the preamble narration, repeats no more herein.

Operation principle of the present utility model:

The screwdriver slot 33 of described rotating shaft major part and protruding spindle nut major part and 43 usefulness when assembling.Only with hand is arrested lampshade and is moved up or down when the consumer who uses desk lamp regulates the lampshade angle, lampshade is the center of rotation rotation with rotating shaft 3, relying on fixedly, the thrust of the end face tooth 53,63 between the clutch fluted disc 5 and rotation clutch fluted disc 6 overcomes the pressure of spring 7 and jumps tooth, after turning over the angle that needs, remove the hand strength of rotating lampshade, clutch fluted disc 6 is positioned because of the elastic force effect of spring 7.

Claims

1. a desk lamp lampshade swivel joint is made up of support (1), swivel base (2) and rotating shaft (3), and support is connected in lamp socket, and swivel base is connected in bulb socket, and lampshade is housed on the bulb socket, it is characterized in that:

Support (1) is contained in the notch (23) in the middle of the biside plate (21), (22) of swivel base (2), rotating shaft (3) inner chamber that laterally support (1) is passed in insertion from the side plate (21) of swivel base outside passes from another side plate (22) of swivel base (2), locks with protruding spindle nut (4);

At the composition surface place of support (1) with the side plate (22) of swivel base (2), in the macropore of the stairstepping endoporus (11) on support composition surface annular clutch fluted disc (5) is housed, in the aperture of the stairstepping endoporus (24) of side plate (22) annular clutch fluted disc (6) is housed, fluted disc (5), (6) end face respectively has radially protruding accordingly, recessed tooth (53), (63) just in the engagement of described composition surface, the stairstepping macropore of side plate (22) holds the major part of protruding spindle nut, on protruding axle (42) cylindrical of this protruding axle spindle nut, be set with a compression spring (7), one end of this spring (7) contacts in the major part inner face of protruding spindle nut (4), and end contacts in the back of annular clutch fluted disc (6) in addition;

The ladder macropore of the major part of described rotating shaft (3) and side plate (21) is with projection (301), and groove (302) is done circumferentially location;

The shoulder hole of clutch (5) and clutch (5) are installed with projection (51) on the described support, groove (52) is done circumferentially location;

Described side plate (22) is gone up shoulder hole and clutch (6) that clutch (6) is installed and is done circumferentially location with projection (61), groove (62);

On major part (41) outer face of the major part outer face of rotating shaft (3) and protruding spindle nut (4), respectively be shaped on cross recess (33) and (43 of using for screwdriver).