CN201439927U - Pivot structure of lamp arm and lampshade - Google Patents

Abstract

The utility model provides a lamp arm and lamp shade pin joint structure, the pin joint structure comprises a pivot and a gasket of setting between lamp shade and lamp arm, and wherein, the gasket sets up in pivot and lamp shade pin joint position, and the edge is to the protruding baffle of establishing of lamp shade direction, the lamp shade for the downward outstanding extension of baffle of gasket has a backstop portion, and when pivot and lamp shade because of adjusting the position relative pivot, the baffle of gasket interferes mutually with the backstop portion of lamp shade, can restrict the lamp shade and be less than 360 degrees rotations, avoids lamp shade rotation angle to cross when causing the inside electric wire of lamps and lanterns to destroy and reduce.

Description

Pivot structure of lamp arm and lampshade

technical field

The utility model relates to a pivot joint structure applied to a table lamp, in particular to a pivot joint structure for connecting a lampshade and a lamp arm for positioning and adjusting an angle.

Background technique

Existing table lamps are equipped with a joint at both ends of the lamp arm to connect the lampshade and the lamp holder, so that the user can adjust the height and position of the lampshade arbitrarily. In addition, a pivot structure is further provided between the joint and the lampshade to provide The horizontal angle of the lampshade enables the lampshade not only to move up and down, but also to rotate the lampshade left and right through the pivot structure, so as to achieve better flexibility in adjusting the irradiation angle of the desk lamp.

In the above structure, since the power cord must be connected to the lampshade by the lamp arm through the joint, in order to prevent the user from rotating too much when adjusting the angle of the lampshade and causing the internal wires of the lamp to be twisted, it is necessary to prevent the lampshade from rotating 360 degrees in the pivot structure. Structure.

Please refer to Fig. 1 and Fig. 2, the three-dimensional exploded view and the combined side sectional view of the existing pivot structure for preventing 360-degree rotation of the lampshade. The pivot structure is a rotating shaft arranged between the lampshade 1 and the lamp arm 2 3. There is a first protrusion 4 on the side of the rotating shaft 3, and the lampshade 1 protrudes downward relative to the first protrusion 4 of the rotating shaft 3, and a second protrusion 5 extends downward. When the rotating shaft 3 and the lampshade 1 are adjusted in position When relative pivoting, the first protrusion 4 of the rotating shaft 3 and the second protrusion 5 of the lampshade 1 interfere with each other, which can limit the rotation of the lampshade less than 360 degrees, and prevent the positive and negative power lines from being continuously twisted and broken.

Although the above-mentioned existing pivoting structure can achieve the purpose of preventing the lampshade from rotating 360 degrees, the rotating shaft and the desk lamp are made of plastic material. After a period of use, the plastic wear on both sides will cause insufficient tightness, making it impossible to connect the lampshade and the lamp arm. Stable positioning, so the creator has developed a pivoting structure that is less prone to wear and tear, so as to improve the shortcomings of the prior art.

Contents of the invention

The main purpose of the utility model is a pivot joint structure that can limit the rotation of the lampshade to less than 360 degrees, so as to avoid damage to the internal wires of the lamp caused by excessive rotation angle of the lampshade.

In order to achieve the above purpose, the pivotal connection structure between the lamp arm and the lampshade of the present invention is composed of a rotating shaft arranged between the lampshade and the lamp arm, and a gasket, wherein the gasket is arranged at the pivoting position of the rotating shaft and the lampshade, and the edge faces There is a baffle protruding in the direction of the lampshade. The lampshade protrudes downward relative to the baffle of the spacer and has a stopper. The parts interfere with each other, which can limit the rotation of the lampshade to less than 360 degrees.

During implementation, the rotating shaft further includes a first protrusion located at the bottom of the side, and the gasket is provided with a positioning hole relative to the first protrusion, so that the gasket can be fixed on the rotating shaft when it is sleeved on the rotating shaft, so that the gasket The baffle plate of the sheet forms a stop function on the rotation path of the lampshade, preventing the lampshade from rotating 360 degrees.

In addition, the baffle plate and the alignment hole of the gasket can be integrally formed by sheet metal stamping, and the gasket is stamped out of a bent part to have elasticity. When the lampshade and the shaft are relatively pivoted, the gasket bends The folded part produces a reverse elastic restoring force due to being flattened, so the friction force between the rotating shaft and the lampshade can be increased, so that the lampshade is not easy to loose after the angle is adjusted.

In addition, when the lampshade is implemented, a downwardly extending pivoting ring can be provided at the pivoting position with the rotating shaft, the pivoting ring is provided for the stopper, and a first protrusion is provided on the inner edge opposite to the first protrusion of the rotating shaft. Two projections, when the rotating shaft is connected with the pivot ring, the second projection and the first projection interfere with each other, which can limit the rotation of the lampshade to less than 360 degrees; , can achieve the function of double limit.

Furthermore, the rotating shaft is provided with an outwardly protruding positioning ring on the top periphery relative to the pivoting ring, and runs through the U-shaped gap at the top of the positioning ring at corresponding positions on both sides. When the top of the rotating shaft is inserted into the pivoting ring of the lampshade, the U The notch makes the rotating shaft slightly compressed, and it is close to the pivot ring, while the positioning ring fixes the rotating shaft on the lampshade, so that the rotating shaft and the lampshade are tightly connected.

Compared with the prior art, the utility model can improve the problem of plastic abrasion by interfering with the metal baffle and the stopper of the lampshade, and can also limit the lampshade to an appropriate rotation angle, so that the lampshade can rotate less than 360 degrees , to avoid damage to the wires inside the lamp. In addition, the spacer is elastic by stamping the bent part, so the friction force between the rotating shaft and the lampshade can be increased, so that the lampshade is not easy to loosen after the angle is adjusted.

Description of drawings

Fig. 1 is a three-dimensional exploded view of the existing pivot structure for preventing the lampshade from rotating 360 degrees;

Fig. 2 is a combined side sectional view of the existing pivot joint structure for preventing 360-degree rotation of the lampshade;

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

Fig. 4 is a side partial sectional combined view of the utility model;

Fig. 5 is a schematic diagram (1) of blocking each other between the baffle plate and the stopper when the utility model rotates;

Fig. 6 is a schematic diagram (2) of blocking each other between the baffle plate and the stopper when the utility model rotates;

Fig. 7 is a schematic diagram of mutual blocking between the baffle plate and the stopper when the utility model rotates (3).

Explanation of reference signs: 10-lampshade; 11-stopper; 20-lamp arm; 30-rotating shaft; 31-first bump; 32-positioning ring; plate; 42-alignment hole; 50-pivot ring; 51-second bump.

Detailed ways

As shown in Figure 3, the three-dimensional exploded view of the utility model, the utility model lamp arm and lampshade pivot structure is composed of a rotating shaft 30 arranged between the lampshade 10 and the lamp arm 20, and a gasket 40, wherein, The spacer 40 is arranged at the pivot joint position between the rotating shaft 30 and the lampshade 10, and a baffle 41 protrudes from the edge toward the lampshade 10. The lampshade 10 protrudes downwards relative to the baffle 41 of the gasket 40 and has a stopper 11, when When the rotating shaft 30 and the lampshade 10 pivot relative to each other due to position adjustment, the baffle 41 of the washer 40 interferes with the stopper 11 of the lampshade 10 to limit the rotation of the lampshade to less than 360 degrees.

The rotating shaft 30 further includes a first protrusion 31 located at the bottom of the side, and the gasket 40 is provided with a positioning hole 42 relative to the first protrusion 31, so that the gasket 40 can be fixed on the rotating shaft when it is sleeved on the rotating shaft 30 30, let the baffle plate 41 of the spacer 40 form a stop function on the rotation path of the lampshade to block the 360-degree rotation of the lampshade.

In addition, the baffle plate 41 and the alignment hole 42 of the gasket 40 can be integrally formed by sheet metal stamping, and at the same time, the gasket is stamped out of a bent portion to have elasticity. When the lampshade 10 and the shaft 30 are relatively pivoted At this time, the bent part of the gasket 40 will produce a reverse elastic restoring force due to being flattened, so the friction force between the rotating shaft 30 and the lampshade 10 can be increased, so that the lampshade is not easy to loosen after the angle is adjusted.

In addition, when the lampshade 10 is implemented, a downwardly extending pivot ring 50 can be provided at the pivot joint position with the rotating shaft 30 , the pivot ring 50 is provided for the stopper 11 , and its inner edge is opposite to the second position of the rotating shaft 30 . A bump 31 is provided with a second bump 51, when the rotating shaft 30 is connected to the pivot ring 50, the first bump 31 and the second bump 51 interfere with each other, which can limit the rotation of the lampshade to less than 360 degrees; The baffle plate 41 of the sheet 40 interferes with the stopper portion 11 of the lampshade 10 to achieve a dual position-limiting function.

As shown in FIG. 4 , the side partial cross-sectional combined view of the utility model, the rotating shaft 30 is provided with an outwardly protruding positioning ring 32 on the top periphery relative to the pivoting ring 50 , and runs through the top of the positioning ring 32 at corresponding positions on both sides. When the top of the rotating shaft 30 is inserted into the pivoting ring 50 of the lampshade 10, the U-shaped notch 33 makes the rotating shaft 30 slightly compressed and close to the pivoting ring 50, while the positioning ring 32 will hold the rotating shaft 30 It is fixed on the lampshade 10 so that the rotating shaft 30 is closely connected with the lampshade 10 .

As shown in Figures 5 to 7, the baffle plate and the stopper block each other when the utility model rotates, please refer to Figure 3, when the user adjusts the lampshade, the stopper 11 below the lampshade 10 rotates together with the lampshade 10 , and the alignment hole 42 of the aforementioned spacer 40 engages with the first protrusion 31 of the rotating shaft 30 to form a positioning, so that the spacer 40 will not rotate together with the lampshade 10; therefore, when the stopper 11 of the lampshade 10 rotates to When the baffle 41 of the washer 40 is touched, the stopper 11 is blocked by the baffle 41 and cannot continue to rotate. Therefore, the stopper 11 and the baffle 41 can limit the rotation of the lampshade to less than 360 degrees, preventing the lampshade 10 from rotating too far. When it causes damage to the wires inside the lamp.

The utility model can improve the problem of plastic abrasion through the mutual interference between the metal baffle plate 41 and the stop part 11 of the lampshade 10, and can also limit the lampshade to an appropriate rotation angle, so that the lampshade can be rotated less than 360 degrees, avoiding internal damage of the lamp Cord is damaged. In addition, the gasket 40 is elastic by stamping the bent part, so the friction force between the rotating shaft 30 and the lampshade 10 can be increased, so that the lampshade 10 is not easy to loose after the angle is adjusted.

The above names are used for the convenience of describing the technical content of the utility model, and are not used to limit the scope of rights of this case; therefore, all conversions and substitutions of equivalent components based on the spirit of the utility model of this case shall be covered by the protection of this case. within range.

Claims (5)

1. A pivotal connection structure between the lamp arm and the lampshade, characterized in that it consists of a gasket and a rotating shaft arranged between the lampshade and the lamp arm, wherein the gasket is arranged between the rotating shaft and the lampshade At the pivotal joint position, a baffle plate protrudes from the edge of the spacer toward the lampshade, and a stopper protrudes downward from the lampshade, and the stopper part corresponds to the position of the baffle plate of the spacer. 2. The pivotal connection structure between the lamp arm and the lampshade according to claim 1, wherein the rotating shaft includes a first protrusion located at the bottom of the side, and the spacer is provided with a protrusion relative to the first protrusion. Alignment holes. 3. The pivotal connection structure between the lamp arm and the lampshade according to claim 2, wherein the lampshade is provided with a downwardly extending pivoting ring at the pivoting position of the lampshade, and the pivoting ring is used for the stopper It is provided, and the inner edge of the pivot ring is provided with a second protrusion relative to the first protrusion of the rotating shaft, and the second protrusion is located at a position where it stops with the first protrusion. 4 . The pivotal connection structure between the lamp arm and the lampshade according to claim 1 , wherein the gasket is integrally formed by stamping sheet metal, and at the same time, an elastic bending part is punched out. 5. The pivotal connection structure between the lamp arm and the lampshade according to claim 1, wherein the lampshade is provided with a downwardly extending pivoting ring at the pivoting position with the rotating shaft, and the rotating shaft is relative to the pivoting joint The top periphery of the ring is provided with a positioning ring protruding outward and fixing the rotating shaft on the lampshade, and a U-shaped notch located on two corresponding sides and passing through the top of the positioning ring.

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