CN215863253U - Telescopic lamp - Google Patents

Abstract

The application relates to the technical field of lighting equipment, in particular to a telescopic lamp. The telescopic lamp comprises a first lamp body, a second lamp body and a first driving assembly; the second lamp body is connected with the first lamp body and can move along the length direction of the first lamp body; the first driving assembly is connected between the first lamp body and the second lamp body to drive the second lamp body to move back and forth relative to the first lamp body. This scalable lamps and lanterns can realize that this scalable lamps and lanterns can adjust along the length direction's of first lamp body illumination zone, make the user obtain better illumination experience, embody science and technology and feel, only need a scalable lamps and lanterns can obtain multiple light effect, on the other hand drives the second lamp body through first drive assembly for flexible regulation is more accurate and convenient.

Description

Telescopic lamp

Technical Field

The application relates to the technical field of lighting equipment, in particular to a telescopic lamp.

Background

At present, the length of a lamp is usually fixed, so that various lighting requirements cannot be met, when the lighting range which can be covered by the lamp along the length direction of the lamp needs to be large, the whole lamp needs to be designed to be long, and conversely, when the lighting range which can be covered by the lamp along the length direction of the lamp needs to be small, the whole lamp needs to be designed to be small.

Above two kinds of circumstances all have illumination zone and atmosphere single relatively, can not adjust the problem, need install the lamps and lanterns of multiple different specifications under the occasion that needs build multiple illumination zone, and the occupation of land scope is big and influence pleasing to the eye.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a telescopic lamp to solve the technical problem that the lighting range and atmosphere which can be achieved by the lamp along the length range of the lamp in the prior art are relatively single to a certain extent.

The application provides a telescopic lamp which comprises a first lamp body, a second lamp body and a first driving assembly;

the second lamp body is connected with the first lamp body and can move along the length direction of the first lamp body;

the first driving assembly is connected between the first lamp body and the second lamp body to drive the second lamp body to reciprocate relative to the first lamp body.

In the above technical solution, further, the number of the second lamp bodies is two, the two second lamp bodies are respectively disposed at two sides of the first lamp body in the width direction, and the two second lamp bodies can respectively extend and retract relative to two ends of the first lamp body in the length direction.

In any of the above technical solutions, further, the first driving assembly includes a first reduction motor, two racks and two gears;

the first speed reducing motor is arranged in the first lamp body, and the two gears are respectively connected with an output shaft of the first speed reducing motor so as to enable the two gears to synchronously rotate;

the two racks extend along the length direction of the first lamp body and are respectively connected with the two second lamp bodies;

the two racks are respectively meshed with the two gears, and the tooth surfaces of the two racks are arranged oppositely.

In any one of the above technical solutions, further, each of the first lamp body and the second lamp body includes a housing and an illumination portion, and the illumination portion is connected to a bottom of the housing;

the first speed reduction motor is arranged inside the shell of the first lamp body, and the two racks are respectively arranged inside the shells of the two second lamp bodies;

two the second lamp body towards the lateral part of first lamp body is provided with dodges the groove, the length direction who dodges the groove with the length direction of first lamp body is unanimous, two the gear passes respectively dodge the groove and stretch into two the inside of second lamp body and with the rack meshes mutually.

In any of the above technical solutions, further, the retractable lamp further includes a first limit switch and a second limit switch electrically connected to the first driving assembly;

the first limit switch and the second limit switch are arranged at intervals in the length direction of the first lamp body, and the second lamp body is provided with a trigger part;

when the trigger part triggers the first limit switch, the first speed reducing motor stops rotating forwards;

when the triggering part triggers the second limit switch, the first speed reducing motor stops reversing.

In any one of the above technical solutions, further, a ratio of a distance between the first limit switch and the second limit switch to a length of the first lamp body is 1/5-1/2.

In any of the above technical solutions, further, the retractable lamp further includes a motor control board, a first diode and a second diode, and the first speed reduction motor is a dc motor;

the motor control board is electrically connected with the anode of the first speed reducing motor through the first diode, and the motor control board is electrically connected with the cathode of the first speed reducing motor through the second diode;

the first diode is connected with the first limit switch in parallel, and when the first limit switch is triggered, the first diode is switched from a short-circuited state to a conducted state;

the second diode is connected in parallel with the second limit switch, and when the second limit switch is triggered, the state that the second diode is short-circuited is switched to the state that the second diode is conducted.

In any of the above technical solutions, further, the retractable lamp further includes a ceiling lamp holder, a suspension assembly, and a second driving assembly;

the ceiling lamp holder is used for being connected with a ceiling, the suspension assembly comprises a sling and a take-up pulley, one end of the sling is connected with the first lamp body, and the second end of the sling is wound on the take-up pulley;

the second driving assembly and the take-up pulley are both arranged in the ceiling lamp holder, and the second driving assembly can drive the take-up pulley to take up and pay off the sling.

In any one of the above technical solutions, further, the number of the suspension assemblies is two, and the connection positions of the suspension ropes of the two suspension assemblies and the first lamp body are distributed at intervals along the length direction of the first lamp body;

the second driving assembly comprises a second speed reducing motor and two belt transmission mechanisms, and the second speed reducing motor drives the two belt transmission mechanisms to drive the take-up pulley to rotate respectively.

In any of the above technical solutions, further, the belt transmission mechanism includes a belt, a driving wheel and a driven wheel;

the driving wheels are connected with the output shaft of the second speed reducing motor so as to enable the driving wheels of the two belt transmission mechanisms to rotate in opposite directions;

the belt is wound on the driving wheel and the driven wheel, and the driven wheel is coaxially connected with the take-up pulley.

Compared with the prior art, the beneficial effect of this application is:

the application provides scalable lamps and lanterns includes first lamp body, second lamp body and first drive assembly. The second lamp body is connected with the first lamp body and can move along the length direction of the first lamp body; the first driving assembly is connected between the first lamp body and the second lamp body to drive the second lamp body to move back and forth relative to the first lamp body. Thereby on the one hand through the second lamp body for the flexible of first lamp body, can realize that this scalable lamps and lanterns can adjust along the length direction's of first lamp body illumination zone, make the user obtain better illumination experience, embody science and technology and feel, only need a scalable lamps and lanterns can obtain multiple light effect, on the other hand drives the second lamp body through first drive assembly for flexible regulation is more accurate and convenient.

Drawings

In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a first structural schematic diagram of a retractable lamp provided in an embodiment of the present application;

fig. 2 is a second structural schematic diagram of the retractable lamp provided in the embodiment of the present application;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a third structural schematic diagram of a retractable lamp provided in the embodiment of the present application;

FIG. 5 is an enlarged view of a portion of FIG. 4;

fig. 6 is a fourth structural schematic diagram of the retractable lamp provided in the embodiment of the present application;

FIG. 7 is an enlarged view of a portion of FIG. 6 at A;

fig. 8 is a control circuit diagram of a first speed reduction motor of the retractable lamp according to the embodiment of the present application.

Reference numerals:

1-a retractable light fixture; 10-a first lamp body; 11-a second lamp body; 120-a first gear motor; 121-a first gear; 122-a second gear; 123-a first rack; 124-a second rack; 125-avoidance groove; 130-a first limit switch; 131-a second limit switch; 132-a trigger; 15-ceiling lamp base; 17-a suspension assembly; 170-a sling; 171-a take-up pulley; 172-wire passing wheels; 18-a belt drive; 180-a belt; 181-driving wheel; 182-driven wheel; 183-first tensioning wheel; 184-a second tensioning wheel; 19-a second gear motor; 2-motor control board; 20-a first diode; 21-second diode.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

Referring to fig. 1 to 8, an embodiment of the present application provides a retractable lamp 1, which includes a first lamp body 10, a second lamp body 11, a first driving assembly, a first limit switch 130, a second limit switch 131, a ceiling lamp socket 15, a suspension assembly 17, and a second driving assembly.

Hereinafter, the above components of the retractable light fixture 1 will be described in detail.

In the alternative of this embodiment, the first lamp body 10 and the second lamp body 11 are both the components playing a role in lighting, the second lamp body 11 is connected to the first lamp body 10 and can move along the length direction of the first lamp body 10, that is, the second lamp body 11 is movably connected to the first lamp body 10 and can extend and retract relative to the first lamp body 10 along the length direction of the first lamp body 10, so that the extending and retracting length of the second lamp body 11 relative to the first lamp body 10 can be adjusted according to the lighting range requirement, and the light effect suitable for more living scenes and living atmospheres can be obtained.

Alternatively, in order to ensure the smoothness, stability and noise reduction of the movement of the second lamp body 11 with respect to the first lamp body 10, a guide support member may be provided between the first lamp body 10 and the second lamp body 11 to match with a slide rail and a pulley.

First drive assembly connects between first lamp body 10 and second lamp body 11 to drive second lamp body 11 first lamp body 10 reciprocating motion relatively, drive and control the second lamp body 11 through first drive assembly, need not manual regulation on the one hand, especially hang under the condition of eminence or other difficult position of operation in this scalable lamps and lanterns 1, can adjust the flexible range of second lamp body 11 through the first drive assembly of remote control, and it is easy and simple to handle high-efficient. On the other hand, when the second lamp body 11 moves to an ideal position, the second lamp body 11 can stop moving only by cutting off the power source of the first driving assembly, so that the accurate control of starting and stopping the second lamp body 11 is realized.

In this embodiment, the number of the second lamp bodies 11 is two, the two second lamp bodies 11 are respectively disposed at two sides of the first lamp body 10 in the width direction, and the two second lamp bodies 11 are respectively capable of extending and contracting relative to two ends of the first lamp body 10 in the length direction. That is, one of the two second lamp bodies 11 is stretchable and contractible with respect to a first end of the first lamp body 10 in the longitudinal direction, and the other of the two second lamp bodies 11 is stretchable and contractible with respect to a second end of the first lamp body 10 in the longitudinal direction.

Therefore, the condition that the two second lamp bodies 11 extend and retract relative to the same end of the first lamp body 10 in the length direction can not occur, the condition that only one second lamp body 11 extends and retracts relative to a certain section of the first lamp body 10 in the length direction can not occur, the second lamp body 11 is ensured to extend and retract relative to the first lamp body 10, the center of gravity of the whole formed by the first lamp body 10 and the second lamp body 11 always falls at the middle point of the first lamp body 10 in the length direction, and the extension stability and the balance are improved.

In an alternative of this embodiment, the first driving assembly includes a first reduction motor 120, a first rack 123, a second rack 124, a first gear 121, and a second gear 122.

The first reduction motor 120 is disposed in the first lamp body 10, and the first gear 121 and the second gear 122 are respectively connected to output shafts of the first reduction motor 120, so that the first gear 121 and the second gear 122 rotate synchronously.

The first rack 123 and the second rack 124 extend in the length direction of the first lamp body 10, the first rack 123 is connected to one of the two second lamp bodies 11, and the second rack 124 is connected to the other of the two second lamp bodies 11, so that one second lamp body 11 moves along the length direction of the first lamp body 10 along with the first rack 123, and the other second lamp body 11 moves along the length direction of the first lamp body 10 along with the second rack 124.

The first rack 123 is engaged with the first gear 121, and the second rack 124 is engaged with the second gear 122, so that the driving force of the first reduction motor 120 is transmitted to the first rack 123 through the first gear 121, and the driving force of the first reduction motor 120 is transmitted to the second rack 124 through the second gear 122.

The tooth surface of the first rack 123 is opposite to the tooth surface of the second rack 124, so that the moving directions of the first rack 123 and the second rack 124 are opposite, that is, the first rack 123 and the second rack 124 move back to back along the length direction of the first lamp body 10, so that the two second lamp bodies 11 extend and unfold relative to the first lamp body 10, or the first rack 123 and the second rack 124 move toward each other along the length direction of the first lamp body 10, so that the two second lamp bodies 11 retract relative to the first lamp body 10.

The gear rack structure is adopted to drive the two lamp bodies, so that the driving precision and the driving stability can be improved, the synchronism of the movement speeds of the two second lamp bodies 11 can be ensured, and the condition that the telescopic lamp 1 is unbalanced due to asynchronous movement is avoided.

In this embodiment, each of the first lamp body 10 and the second lamp body 11 includes a housing and an illumination portion connected to a bottom of the housing, so that the retractable lamp 1 is suitable for hanging use, and the illumination portion is not shielded. As shown in fig. 4, the case and the illumination unit are connected to each other, and as shown in fig. 2, the case is omitted.

The first reduction motor 120 is disposed inside the housing of the first lamp body 10, the first rack 123 is disposed inside the housing of one second lamp body 11, and the second rack 124 is disposed inside the housing of the other second lamp body 11.

The side portions of the two second lamp bodies 11 facing the first lamp body 10 are provided with avoidance grooves 125, the length direction of the avoidance grooves 125 is the same as that of the first lamp body 10, and the two gears respectively penetrate through the avoidance grooves 125 to extend into the inside of the two second lamp bodies 11 and to be engaged with the corresponding racks.

On one hand, the hidden installation of the gear, the rack and the first speed reduction motor 120 is realized, the attractiveness is improved, on the other hand, the situation that an avoidance interval needs to be additionally arranged between the first lamp body 10 and the second lamp body 11 due to the fact that the gear and the rack are meshed and exposed is avoided, the thickness and the size of the telescopic lamp 1 are reduced, the appearance of the telescopic lamp 1 is prevented from being overstaffed, and ash falling caused by the fact that the avoidance interval is additionally arranged between the first lamp body 10 and the second lamp body 11 can also be avoided.

Optionally, the first lamp body 10 and the second lamp body 11 are both in the shape of a long strip, and have the same length and height, so that the second lamp body 11 can be retracted to be completely aligned with the first lamp body 10.

In an alternative of this embodiment, in order to accurately limit the stroke of the two second lamp bodies 11, the retractable lamp 1 further includes a first limit switch 130 and a second limit switch 131 electrically connected to the first speed reduction motor 120 of the first driving assembly.

The first lamp body 10 has a first limit switch 130 and a second limit switch 131 spaced apart in a longitudinal direction thereof, and the second lamp body 11 has a trigger 132. Alternatively, the triggering part 132 and the first limit switch 130 or the second limit switch 131 may be triggered in a contact or non-contact manner, the first limit switch 130 is triggered as long as the triggering part 132 moves to correspond to the first limit switch 130, and similarly, the second limit switch 131 is triggered as long as the triggering part 132 moves to correspond to the second limit switch 131.

When the triggering part 132 triggers the first limit switch 130, the first reduction motor 120 stops rotating forward; when the triggering part 132 triggers the second limit switch 131, the first reduction motor 120 stops rotating reversely. When the first decelerating motor 120 rotates forward, the two second lamp bodies 11 unfold relative to the first lamp body 10, and when the triggering part 132 triggers the first limit switch 130, it indicates that the second lamp bodies 11 do not extend, i.e. do not unfold relative to the first lamp body 10; when the first deceleration motor 120 rotates reversely, the two second lamp bodies 11 approach relatively, and when the triggering part 132 triggers the second limit switch 131, it means that the second lamp bodies 11 are not retracted, that is, the first lamp body 10 and the two second lamp bodies 11 are restored to the initial state of being stacked in sequence.

In an alternative of this embodiment, the ratio of the distance between the first limit switch 130 and the second limit switch 131 to the length of the first lamp body 10 is 1/5-1/2, that is, the ratio of the telescopic stroke of the second lamp body 11 to the length of the first lamp body 10 is 1/5-1/2.

Wherein, by limiting the ratio of the telescopic stroke of the second lamp body 11 to the length of the first lamp body 10 to be not less than 1/5, the telescopic range of the telescopic lamp 1 is ensured to be sufficient, so that the adjustment of the light atmosphere is sufficiently diversified; the ratio of the telescopic stroke of the second lamp body 11 to the length of the first lamp body 10 is not greater than 1/2, so that the second lamp body 11 does not extend too much, the second lamp body 11 is prevented from falling off relative to the first lamp body 10 due to the extension, and the reliability of the telescopic lamp is improved.

For example, the ratio of the distance between the first limit switch 130 and the second limit switch 131 to the length of the first lamp body 10 is 1/5, 1/4, 1/3, 1/2, or the like.

In an alternative of this embodiment, the retractable lamp 1 further includes a motor control board 2, and the first speed reduction motor 120 is a dc motor. Alternatively, the first reduction motor 120 is a dc brushless motor, so that the first reduction motor 120 can be controlled by a digital control signal sent by the motor control board 2, and further, the motor control board 2 can be integrated with the first reduction motor 120.

The motor control board 2 is electrically connected to the positive pole of the first reduction motor 120 through a first diode 20, and the motor control board 2 is electrically connected to the negative pole of the first reduction motor 120 through a second diode 21.

The first diode 20 is connected in parallel with the first limit switch 130, and when the first limit switch 130 is triggered, the first diode 20 is switched from a short-circuited state to a conducted state; the second diode 21 is connected in parallel with the second limit switch 131, and when the second limit switch 131 is triggered, the state in which the second diode 21 is short-circuited is switched to the state in which it is turned on.

Therefore, under the condition that neither the first limit switch 130 nor the second limit switch 131 is triggered, both the first diode 20 and the second diode 21 are short-circuited, so that the positive electrode and the negative electrode of the first speed reduction motor 120 are both controlled by the motor control board 2, and at this time, the motor control board 2 controls the positive electrode and the negative electrode of the first speed reduction motor 120 to be randomly reversed, that is, the forward and reverse switching of the first speed reduction motor 120 can be realized.

Under the condition that first limit switch 130 is triggered, first diode 20 is conducted, and according to the diode one-way conduction principle, first diode 20 prevents motor control board 2 from sending forward direction pivoted drive current to first gear motor 120 to no longer allow first gear motor 120 to continue corotation, make first gear motor 120 stop corotation after trigger portion 132 triggers first limit switch 130, and then make second lamp body 11 stop the forward movement.

Under the condition that the second limit switch 131 is triggered, the second diode 21 is conducted, and according to the diode one-way conduction principle, the second diode 21 prevents the motor control board 2 from sending a driving current for reverse rotation to the first reduction motor 120, so that the first reduction motor 120 is not allowed to continue to reverse, the first reduction motor 120 stops reversing after the triggering part 132 triggers the second limit switch 131, and the second lamp body 11 stops moving in a reverse direction.

The forward movement of the second lamp body 11 is the movement of the second lamp body 11 when the first reduction motor 120 rotates forward; on the contrary, the reverse movement of the second lamp body 11 refers to the movement of the second lamp body 11 generated when the first reduction motor 120 is rotated in the reverse direction.

The circuit structure formed by combining the first limit switch 130 and the second limit switch 131 through the first diode 20, the second diode 21 and the motor control board 2 does not need to additionally increase a wire transmission signal to the main control board, the limit function of the first speed reduction motor 120 can be realized, and the wiring structure is simplified.

In an alternative of this embodiment, in order to further diversify the lighting atmosphere and the lighting manner, the retractable lamp 1 further includes a ceiling lamp holder 15, a suspension assembly 17, and a second driving assembly.

The ceiling lamp holder 15 is used for connecting with a ceiling, so that the retractable lamp 1 is fixedly installed on the ceiling through the ceiling lamp holder 15.

The suspension assembly 17 comprises a suspension cable 170 and a take-up pulley 171, one end of the suspension cable 170 is connected with the first lamp body 10, the second end of the suspension cable 170 is wound on the take-up pulley 171, the second driving assembly and the take-up pulley 171 are both arranged in the ceiling lamp holder 15, and the second driving assembly can drive the take-up pulley 171 to take up and take down the suspension cable 170.

Therefore, the suspension cable 170 is tightened by the second driving assembly driving the take-up pulley 171, the first lamp body 10 and the second lamp body 11 can be synchronously lifted, and on the contrary, the suspension cable 170 is released by the second driving assembly driving the take-up pulley 171, and the first lamp body 10 and the second lamp body 11 can be synchronously released. On one hand, the first lamp body 10 and the second lamp body 11 are lifted, so that the light atmosphere can be further adjusted according to scene requirements; on the other hand controls lift adjustment through second drive assembly, need not climb the ladder or look for professional to go to the door, and it is more convenient to use the regulation.

Optionally, in order to reduce the risk that the sling 170 greatly shakes and is wound in the winding and unwinding process, a line passing wheel 172 is further disposed on a side portion of the line winding wheel 171, a line passing groove extending in the vertical direction is formed in the line passing wheel 172, and the sling 170 is inserted into the line passing groove of the line passing wheel 172.

In this embodiment, in order to make the lifting adjustment of the retractable lamp 1 more stable and make the suspension installation of the retractable lamp 1 more safe and reliable, the number of the suspension assemblies 17 is two, and the connection positions of the suspension ropes 170 of the two suspension assemblies 17 and the first lamp body 10 are distributed at intervals along the length direction of the first lamp body 10. For example, the connection of the suspension wires 170 of the two suspension assemblies 17 and the first lamp body 10 equally divides the length of the first lamp body 10 into three.

Correspondingly, the second driving assembly comprises a second speed reduction motor 19 and two belt transmission mechanisms 180, and the second speed reduction motor 19 respectively drives the two belt transmission mechanisms 18 to drive the take-up pulley 171 to rotate.

In this embodiment, the belt transmission mechanism 18 includes a belt 180, a driving pulley 181, a driven pulley 182, a first tension pulley 183, and a second tension pulley 184. Wherein, the action wheel 181 is connected with the output shaft of second gear motor 19 to make the action wheel 181 of two belt drive mechanism 18 antiport, specifically speaking, the output shaft of second gear motor 19 drives two driven gears that mesh with the sun gear through a sun gear, makes two driven gears take place antiport, again with two action wheels 181 respectively with two driven gear coaxial coupling, thereby two action wheels 181 can the antiport, and the rotational speed is the same.

The belt 180 is wound on the driving wheel 181 and the winding wheel 171, power is transmitted from the driving wheel 181 to the driven wheel 182 through the belt 180, the driven wheel 182 is coaxially connected with the winding wheel 171, the driven wheel 182 drives the winding wheel 171 to rotate, so that the two winding wheels 171 rotate in opposite directions and rotate at the same speed, and the two slings 170 are lifted synchronously under the condition that the winding directions of the two winding wheels 171 are opposite.

It so adopts two sets of belt drive mechanism 18 to drive two take-up pulley 171 respectively, because adopt same drive belt to drive two take-up pulley 171's scheme simultaneously, because two take-up pulley 171 are located the both sides of second gear motor 19 respectively, thereby second gear motor 19 promotes a take-up pulley 171 through the drive belt and rotates, through another take-up pulley of drive belt pulling rotation, also one side drive belt is drawn, one side drive belt pressurized, thereby one side drive belt that is drawn is tighter than the one side drive belt that is compressed, thereby take-up pulley 171 that the drive belt that is drawn one side driven rotates faster than the take-up pulley 171 that is driven in the drive belt that is compressed one side, cause receiving and releasing of both sides hoist cable 170 asynchronous, and then cause the lift of first lamp body 10 and second lamp body 11 unstable and unbalanced.

Therefore, the two winding wheels 171 are driven by the two belt transmission mechanisms 18 respectively, so that the two winding wheels 171 are pulled or pressed simultaneously, thereby ensuring the rotation synchronism of the two winding wheels, that is, the winding synchronism of the slings at the two sides, and further ensuring the lifting stability and balance of the first lamp body 10 and the second lamp body 11.

In order to avoid that the belt 180 cannot be tensioned after the belt 180 is aged and loosened over time, the first tensioning wheel 183 is arranged to press the belt 180 from the outer side to the inner side of the belt 180, and the second tensioning wheel 184 is arranged to press the belt 180 from the inner side to the outer side of the belt 180, so that the vibration of the belt 180 can be reduced, the belt 180 can be ensured to be kept in a tensioned state in the long-term use process, the lifting synchronism of the two slings 170 is improved, and the service life of the belt transmission mechanism 18 is prolonged.

In this embodiment, in order to facilitate control of the lifting stroke of the retractable lamp 1, a third trigger switch and a fourth trigger switch may be disposed between the first lamp and the ceiling, and the third diode, the fourth diode and the second motor control board 2 are cooperated to control the forward/reverse rotation start/stop of the second speed reduction motor 19.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention. Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the utility model and form different embodiments. For example, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Claims (10)

1. A telescopic lamp is characterized by comprising a first lamp body, a second lamp body and a first driving assembly;

the second lamp body is connected with the first lamp body and can move along the length direction of the first lamp body;

the first driving assembly is connected between the first lamp body and the second lamp body to drive the second lamp body to reciprocate relative to the first lamp body.

2. The retractable lamp as claimed in claim 1, wherein the number of the second lamp bodies is two, the two second lamp bodies are respectively disposed at two sides of the first lamp body in the width direction, and the two second lamp bodies are respectively retractable with respect to two ends of the first lamp body in the length direction.

3. The retractable light fixture of claim 2 wherein the first drive assembly comprises a first gear motor, two racks, and two gears;

the first speed reducing motor is arranged in the first lamp body, and the two gears are respectively connected with an output shaft of the first speed reducing motor so as to enable the two gears to synchronously rotate;

the two racks extend along the length direction of the first lamp body and are respectively connected with the two second lamp bodies;

the two racks are respectively meshed with the two gears, and the tooth surfaces of the two racks are arranged oppositely.

4. The retractable light fixture of claim 3 wherein the first and second light bodies each comprise a housing and an illumination portion, the illumination portion being connected to a bottom portion of the housing;

the first speed reduction motor is arranged inside the shell of the first lamp body, and the two racks are respectively arranged inside the shells of the two second lamp bodies;

two the second lamp body towards the lateral part of first lamp body is provided with dodges the groove, the length direction who dodges the groove with the length direction of first lamp body is unanimous, two the gear passes respectively dodge the groove and stretch into two the inside of second lamp body and with the rack meshes mutually.

5. The retractable light fixture of claim 3 further comprising a first limit switch and a second limit switch electrically connected to the first drive assembly;

the first limit switch and the second limit switch are arranged at intervals in the length direction of the first lamp body, and the second lamp body is provided with a trigger part;

when the trigger part triggers the first limit switch, the first speed reducing motor stops rotating forwards;

when the triggering part triggers the second limit switch, the first speed reducing motor stops reversing.

6. The retractable light fixture of claim 5, wherein the ratio of the distance between the first limit switch and the second limit switch to the length of the first light body is 1/5-1/2.

7. The retractable light fixture of claim 5, further comprising a motor control board, a first diode and a second diode, wherein the first gear motor is a DC motor;

the motor control board is electrically connected with the anode of the first speed reducing motor through the first diode, and the motor control board is electrically connected with the cathode of the first speed reducing motor through the second diode;

the first diode is connected with the first limit switch in parallel, and when the first limit switch is triggered, the first diode is switched from a short-circuited state to a conducted state;

the second diode is connected in parallel with the second limit switch, and when the second limit switch is triggered, the state that the second diode is short-circuited is switched to the state that the second diode is conducted.

8. The retractable light fixture of claim 1 further comprising a ceiling light base, a suspension assembly, and a second drive assembly;

the ceiling lamp holder is used for being connected with a ceiling, the suspension assembly comprises a sling and a take-up pulley, one end of the sling is connected with the first lamp body, and the second end of the sling is wound on the take-up pulley;

the second driving assembly and the take-up pulley are both arranged in the ceiling lamp holder, and the second driving assembly can drive the take-up pulley to take up and pay off the sling.

9. The retractable lamp as claimed in claim 8, wherein the number of the suspension assemblies is two, and the connection positions of the suspension cables of the two suspension assemblies and the first lamp body are spaced along the length direction of the first lamp body;

the second driving assembly comprises a second speed reducing motor and two belt transmission mechanisms, and the second speed reducing motor drives the two belt transmission mechanisms to drive the take-up pulley to rotate respectively.

10. The retractable light fixture of claim 9 wherein the belt drive mechanism comprises a belt, a drive pulley, and a driven pulley;

the driving wheels are connected with the output shaft of the second speed reducing motor so as to enable the driving wheels of the two belt transmission mechanisms to rotate in opposite directions;

the belt is wound on the driving wheel and the driven wheel, and the driven wheel is coaxially connected with the take-up pulley.

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