CN112682740A

CN112682740A - Down lamp structure and disassembling and assembling method thereof

Info

Publication number: CN112682740A
Application number: CN202110084685.2A
Authority: CN
Inventors: 张先军
Original assignee: Shanghai Aite Lighting Design Co ltd
Current assignee: Shanghai Aite Lighting Design Co ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-04-20
Anticipated expiration: 2041-01-22
Also published as: CN112682740B

Abstract

The application relates to a down lamp structure and a disassembling and assembling method thereof, and the down lamp structure comprises a barrel body and a lamp body arranged in the barrel body, wherein a plurality of spring clamps are arranged on the peripheral surface of the barrel body, a winding barrel is rotatably sleeved on the peripheral surface of the barrel body, a traction rope is arranged at the free end of each spring clamp, the other end of the traction rope bypasses a guide piece arranged on the barrel body, and the end of the traction rope is fixedly arranged with the winding barrel; one end of the barrel body is rotatably connected with a control ring used for controlling the rotation of the winding barrel. This application is through rotatory the control ring who exposes in the ceiling, can control the butt and upwards turn over in the inside spring clamp of ceiling to reduce and take off the condition emergence of destroying the mounting hole pore wall of ceiling because of the great interference of the exposed volume of spring clamp when down the lamp, thereby ensured the outward appearance integrality of ceiling, the installation of the subsequent down lamp of also being convenient for simultaneously, convenient and fast.

Description

Down lamp structure and disassembling and assembling method thereof

Technical Field

The application relates to the field of lamp structures, in particular to a down lamp structure and a disassembling and assembling method thereof.

Background

With the continuous progress of science and technology, various lamps are widely applied to daily life, and down lamps are applied to ceilings as decorative lamps to realize the function of indoor illumination.

Be provided with two spring clamps that set up mutually back on general down lamp, utilize spring clamp's elasticity to support the face ring of down lamp on the outer terminal surface of ceiling, the down lamp is installed in the mounting hole of ceiling promptly.

But when dismantling the down lamp, need take down the down lamp from the ceiling, because the spring clamp butt on the down lamp connects in the upper surface of ceiling, consequently the spring clamp will be compelled to turn over along the direction of keeping away from down lamp face ring and roll over, the torsional spring of spring clamp lasts the atress this moment, at the in-process of taking off the down lamp, the spring clamp of down lamp will last on the pore wall of butt mounting hole, and last the application of force to the pore wall, consequently, the mounting hole pore wall damage that easily leads to the ceiling, cause the breach, both influenced the appearance integrality of ceiling, again because the wearing and tearing piece of pore wall drops and lead to operating personnel's discomfort.

Disclosure of Invention

In order to ensure the appearance integrity of a ceiling, the application provides a down lamp structure and a dismounting method thereof.

The application provides a down lamp structure and a dismounting method thereof, which adopts the following technical scheme:

a down lamp structure comprises a barrel and a lamp body arranged in the barrel, wherein a plurality of spring clamps are arranged on the outer peripheral surface of the barrel, a winding barrel is rotatably sleeved on the outer peripheral surface of the barrel, a traction rope is arranged at the free end of each spring clamp, the other end of each traction rope bypasses a guide piece arranged on the barrel, and the end of each traction rope is fixedly arranged with the winding barrel; one end of the barrel body is rotatably connected with a control ring used for controlling the rotation of the winding barrel.

By adopting the technical scheme, when the down lamp is disassembled, firstly, the fingers of an operator upwards abut against the lower end face of the control ring to maintain the stable barrel, then the operator rotates the control ring in the forward direction while ensuring upward force so as to drive the winding drum to wind the traction rope, so that the free end of the spring clamp is driven to be upwards folded to the highest position, namely, the occupied volume of the exposed structure of the spring clamp is reduced, finally, the hand of the operator supports the down lamp to slowly move down so as to take the down lamp away from the mounting hole of the ceiling, and the exposed volume of the spring clamp is reduced, so that the spring clamp cannot interfere with and damage the hole wall of the mounting hole of the ceiling, the appearance integrity of the ceiling is ensured, meanwhile, the folding state of the spring clamp can be controlled by contacting the exposed control ring, the subsequent installation of the down lamp is facilitated, and the down lamp is convenient and quick.

Optionally, the number of the spring clamps is three, and the three spring clamps are uniformly distributed along the cylinder body as the center circumference.

Through adopting the technical scheme, conventional down lamp, the number of spring clamp is more, can be more stable, but also can lead to the increase of the installation degree of difficulty, because stability and the convenience of installation are considered, consequently, select the spring clamp that 2 symmetries set up, and be greater than two spring clamps, even be three, the installation degree of difficulty of down lamp (need put into the ceiling mounting hole with the down lamp limit in turn over a spring clamp), and because the barrel of this application adopts the mode of control ring control spring clamp, the installation degree of difficulty greatly reduced of down lamp, can set up a plurality of spring clamps, thereby greatly ensured the installation stability of down lamp.

Optionally, the guide member includes a first pulley, a second pulley and a third pulley, which are disposed on the outer peripheral wall of the cylinder, wherein the first pulley is located above the connection position of the spring clamp and the cylinder, and the second pulley and the third pulley are both located below the connection position of the spring clamp and the cylinder; the rotation axis of the first pulley is parallel to the rotation axis of the spring clamp and the rotation axis of the second pulley respectively, the rotation axis of the third pulley is parallel to the rotation axis of the winding drum, and the traction rope starts from the free end of the spring clamp and sequentially bypasses the first pulley, the second pulley and the third pulley.

By adopting the technical scheme, the arrangement of the first pulley can drive the free end of the spring clamp to be turned upwards in a labor-saving manner, so that the installation convenience of the barrel is improved; the second pulley is arranged to guide the traction rope to a position as close to the winding drum as possible; the third pulley is arranged to change the stress direction of the traction rope so as to facilitate the winding of the winding drum.

Optionally, a flaky abutting ring is fixed to the outer peripheral wall of the lower end of the barrel, and the abutting ring is located right above the control ring.

Through adopting above-mentioned technical scheme, the upper surface butt of butt ring is in the lower surface of ceiling, and the operating personnel of being convenient for utilizes the static friction of butt ring and ceiling to fix in order to stabilize the barrel when the rotating control ring to avoid the barrel to rotate along with the rotation of control ring, thereby improve the stability of the rolling process of the receipts spool piece.

Optionally, the upper end surface of the abutting ring is provided with a plurality of point-like rubber pads, the lower end surface of the control ring is provided with anti-slip patterns, and the anti-slip patterns are radially distributed outwards by taking the axis of the control ring as a center.

Through adopting above-mentioned technical scheme, can improve the static frictional force of butt ring and ceiling lower surface to improve the stability of barrel installation and dismantlement process, and the setting of antiskid line can be convenient for control ring's rotating.

Optionally, the control ring is connected with a limiting block along the radial sliding of the control ring, and the winding drum is provided with a first limiting groove for inserting the limiting block along the radial penetration.

Through adopting above-mentioned technical scheme, through the grafting or breaking away from of stopper and first spacing groove, can realize the relative fixed and relative rotation of control ring and receipts reel, when the two is fixed relatively promptly, can ensure that the control ring can drive the rotation of receipts reel, and under the two relative pivoted circumstances, at the in-process of installation down lamp, operating personnel's hand can keep the state of dimension steady control ring and barrel, and the receipts reel will rotate by oneself along with the torsional spring force of spring clamp, thereby can not influence operating personnel's the operation of dimension steady because of the rotation of receipts reel.

Optionally, the peripheral wall of barrel is seted up and is supplied stopper male second spacing groove.

Through adopting above-mentioned technical scheme, through the stopper simultaneously with the cooperation of first spacing groove and second spacing groove, can realize the relatively fixed of take-up drum and barrel to lock the state of spring clamp, avoid operating personnel to need the unnecessary operation of cost to keep the spring clamp when installing down lamp, laborsaving and convenient.

Optionally, the cylinder is provided with a pressure spring, a damping ball is arranged at a free end of the pressure spring, the damping ball abuts against an end surface of the winding drum, and the end surface is a guide surface, that is, the height of the guide surface is gradually increased along the circumferential direction of the winding drum.

By adopting the technical scheme, when the down lamp is installed, when the free end of the spring clamp is turned downwards to abut against the upper surface of a ceiling, the winding drum is in a state of continuously rotating to release the traction rope, and the compression spring forces the damping ball to continuously abut against the end surface of the winding drum in the rotating process of the winding drum, so that the rotation of the winding drum is damped, the downward turning speed of the free end of the spring clamp is limited, and the condition that the ceiling is damaged due to the excessively high speed of the spring clamp is reduced; and because the guide face, the pressure spring is in the state of compressed gradually at the winding drum rotation in-process, therefore the damping is crescent, can reduce gradually the speed of turning down of spring clamp, has ensured the speed of down lamp installation promptly, reduces the damage that the spring clamp speed caused again.

Optionally, the guide surface is detachably provided with a rubber sheet.

By adopting the technical scheme, the damping section can be arranged on the path of the guide surface by arranging the rubber sheet, so that the instantaneous speed of the spring clamp to abut against the upper surface of the ceiling is reduced to the greatest extent, and the damage to the ceiling is reduced; secondly, the position of damping section can be adjusted to detachable setting to according to the ceiling of different thickness, with the speed when reducing the spring clamp and turning over to corresponding angle.

When the down lamp is installed, firstly, manually turning up a spring clamp, namely, turning the spring clamp upwards and in a direction close to a cylinder body, wherein a torsion spring of the spring clamp is stressed at the moment, a traction rope is loosened, then, a limiting block is ensured to be matched with a first limiting groove, a winding cylinder is driven to tighten the traction rope through forward rotation of a control ring, and after the traction rope is tightened, the limiting block is simultaneously matched with the first limiting groove and a second limiting groove, so that the winding cylinder and the cylinder body are relatively fixed; then the barrel is inserted into the mounting hole of the ceiling, the spring clamp on the barrel is positioned above the ceiling, when the upper end face of the abutting ring abuts against the lower surface of the ceiling, the matching of the limiting block and the first limiting groove and the second limiting groove is removed, at the moment, the hand of an operator still keeps the state of abutting against the lower end face of the control ring, so that the relative position of the barrel and the ceiling is maintained, the traction rope is in a relaxed state because the winding drum and the barrel are not in a limiting relationship and the winding drum is not fixed by external force, and the torsion spring of the spring clamp starts to recover deformation to drive the free end of the spring clamp to be downwards folded to abut against the upper surface of the ceiling, so that the installation of the down lamp is completed; when dismantling the down lamp, at first operating personnel's finger upwards butt in the lower terminal surface of control ring is with the steady barrel of maintenance, then make it cooperate with first spacing groove through the stopper that slides, then operating personnel forward rotation control ring when guaranteeing to make the power upwards, in order to drive the winding drum rolling haulage rope, thereby the free end that drives the spring clamp turns over to the highest point upwards, then the stopper that slides again, make the stopper cooperate with first spacing groove and second spacing groove simultaneously, even make barrel and winding drum relatively fixed, with the state of fixed haulage rope, last operating personnel's hand is taken advantage of to hold down the down lamp and moves slowly, in order to take the mounting hole from the ceiling down with the down lamp, thereby accomplish the dismantlement of.

Through adopting above-mentioned technical scheme, when the installation of operating personnel operation down lamp and dismantlement, all lean on the exposed control ring of hand control, or go up the top or the rotating, one comes, can simplify operating personnel's operating procedure and the degree of difficulty, and two comes, and the hand can also be to the position state of barrel to maintain steady in the rotating control ring to reduce the skew of barrel and the condition emergence that the dismouting degree of difficulty that brings increases.

In summary, the present application includes at least one of the following beneficial technical effects:

the spring clamp abutted to the inside of the ceiling can be controlled to be turned upwards by rotating the control ring exposed out of the ceiling, so that the situation that the wall of a mounting hole of the ceiling is interfered and damaged due to the large exposed volume of the spring clamp when the down lamp is taken down is reduced, the appearance integrity of the ceiling is ensured, the subsequent down lamp is convenient to mount, and the down lamp is convenient and quick;

by arranging the abutting ring, the cylinder body is fixed and maintained smoothly by utilizing the contact pressure of the hand of an operator on the control ring, so that the redundant operation of the operator can be saved, and the stability and the convenience of the disassembly and the assembly of the cylinder body are improved;

through setting up damping ball and pressure spring, at the winding drum at the rotation in-process, the pressure spring forces the damping ball to last the butt on the terminal surface of winding drum for the rotation of winding drum has the damping, thereby has restricted the speed of turning over the book downwards of the free end of spring clamp, thereby reduces the spring clamp speed too fast and the condition emergence of damage ceiling.

Drawings

Fig. 1 is a schematic view of the overall structure of the downlight structure of the present embodiment.

Fig. 2 is a schematic view of another view angle of the down lamp structure of the present embodiment.

Fig. 3 is a sectional view of the down lamp structure of the present embodiment.

Fig. 4 is a partially enlarged view of a portion a in fig. 3.

Fig. 5 is a schematic structural view of the take-up drum of the present embodiment.

Description of reference numerals: 1. a barrel; 2. a lamp body; 3. a spring clip; 4. winding the roll; 6. a control loop; 7. a limiting member; 11. a butting ring; 111. a rubber pad; 112. a ball bearing; 12. a cover body; 13. a strut; 14. a second limit groove; 40. a guide surface; 41. a first limit groove; 42. a pressure spring; 43. a damping ball; 44. a rubber sheet; 51. a first pulley; 52. a second pulley; 53. a third pulley; 54. a hauling rope; 61. a chute; 62. a limiting block; 63. breaking off the block; 64. a return spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a down lamp structure. Referring to fig. 1, the lamp comprises a cylinder 1 and a lamp body 2 arranged in the cylinder 1, wherein a sheet-shaped abutting ring 11 is fixed on the outer peripheral wall of the lower end of the cylinder 1, three spring clamps 3 uniformly distributed on the circumference are arranged on the outer peripheral wall of the cylinder 1, and the free ends of the spring clamps 3 are arranged in an inclined downward manner when torsion springs of the spring clamps 3 are in an unstressed state; when the down lamp is normally fixed, the cylinder body 1 is positioned in the mounting hole of the ceiling, the upper surface of the abutting ring 11 on the cylinder body 1 abuts against the lower surface of the ceiling, the free end of the spring clamp 3 on the cylinder body 1 downwardly abuts against the upper surface of the ceiling, and the two abutting forces are combined, so that the down lamp and the ceiling are fixedly mounted; moreover, the upper surface of the abutting ring 11 is provided with a plurality of punctiform rubber pads 111 which play a role of anti-skid buffering so as to increase the connection stability of the down lamp and the ceiling.

As shown in fig. 1, a cover body 12 is fixed on the outer peripheral wall of the cylinder body 1, the cover body 12 is lower than the connecting position between the cylinder body 1 and the spring clamp 3, the lower end of the cover body 12 is higher than the abutting ring 11, and the lower end of the cover body 12 is fixedly connected with the abutting ring 11 through a plurality of support rods 13; an annular space is formed between the inner wall of the cover body 12 and the outer peripheral wall of the barrel body 1, a winding barrel 4 is arranged in the space, the winding barrel 4 is sleeved on the outer peripheral wall of the barrel body 1, the winding barrel 4 can rotate relative to the barrel body 1, and the lower end face of the winding barrel 4 is flush with the lower end face of the barrel body 1.

As shown in fig. 1, the outer peripheral wall of the cylinder 1 is provided with a first pulley 51, the first pulley 51 is higher than the connecting position of the cylinder 1 and the spring clamp 3, and the rotation axis of the first pulley 51 is parallel to the rotation axis of the spring clamp 3; a supporting arm is fixed on the upper part of the abutting ring 11, the supporting arm is provided with a second pulley 52, the second pulley 52 is lower than the connecting position of the cylinder body 1 and the spring clamp 3, and the rotating axis of the second pulley 52 is parallel to the rotating axis of the first pulley 51; the strut 13 is provided with a third pulley 53, the third pulley 53 is closer to the axis of the drum 1 than the second pulley 52, and the rotation axis of the third pulley 53 is parallel to the rotation axis of the winding drum 4.

As shown in fig. 1, the free end of the spring clamp 3 is connected with a pulling rope 54, one end of the pulling rope 54 far away from the spring clamp 3 sequentially bypasses the first pulley 51, the second pulley 52 and the third pulley 53 and is fixedly connected with the winding drum 4, namely, the winding drum 4 is rotated in the forward direction to tighten the pulling rope 54, so that the free end of the spring clamp 3 is driven by the pulling rope 54 to turn upwards, when the winding drum 4 rotates in the reverse direction, the pulling rope 54 is released, the torsion spring on the spring clamp 3 recovers deformation to force the free end of the spring clamp 3 to turn downwards, namely, the free end of the spring clamp 3 can be controlled to turn upwards or downwards through the forward and reverse rotation of the winding drum 4.

As shown in fig. 2, the outer peripheral wall of the lower end of the winding drum 4 is sleeved with a sheet-shaped control ring 6, the lower end face of the control ring 6 is flush with the lower end face of the winding drum 4, and the lower end face of the control ring 6 is provided with anti-skid grains which are radially arranged outwards by taking the axis of the control ring 6 as the center.

As shown in fig. 3, the control ring 6 is rotatably disposed relative to the abutting ring 11, and a plurality of balls 112 are disposed between the upper end surface of the control ring 6 and the lower surface of the abutting ring 11 to reduce the friction force when the two rotate relative to each other; an annular limiting piece 7 is arranged on the outer edge of the lower surface of the abutting ring 11, and the cross section of the limiting piece 7 is L-shaped so as to limit the control ring 6 from being separated from the cylinder 1.

As shown in fig. 4, the control ring 6 is provided with a sliding groove 61 penetrating along the radial direction, the sliding groove 61 is connected with a limiting block 62 in a sliding manner, the limiting block 62 is fixed with a snapping block 63, and the snapping block 63 protrudes downward from the lower surface of the control ring 6; meanwhile, a return spring 64 is further disposed in the sliding groove 61, one end of the return spring 64 abuts against the inner peripheral wall of the limiting member 7, the other end abuts against the end of the limiting member 62, and the return spring 64 forces the limiting member 62 to slide toward the axis of the cylinder 1.

As shown in fig. 4, the lower end of the winding drum 4 is radially penetrated by a first limiting groove 41, and when the limiting block 62 is inserted into the first limiting groove 41, the control ring 6 is relatively fixed to the winding drum 4, so that an operator can rotate the control ring 6 to control winding of the traction rope 54.

As shown in fig. 4, the second limiting groove 14 is radially formed in the outer peripheral wall of the lower end of the cylinder 1, and when the limiting block 62 is simultaneously matched with the first limiting groove 41 and the second limiting groove 14, the winding cylinder 4 and the cylinder 1 are relatively fixed, so that the traction rope 54 in the winding state is limited.

The embodiment of the application also discloses a method for assembling and disassembling the down lamp structure, which comprises the following steps:

when the down lamp is installed, the spring clamp 3 is manually turned upwards, namely the spring clamp 3 is turned upwards and close to the barrel 1, at the moment, the torsion spring of the spring clamp 3 is stressed, the traction rope 54 is loosened, then the stop block 62 is matched with the first limit groove 41 by buckling the snapping block 63, then the winding barrel 4 is driven to tighten the traction rope 54 by positive rotation of the control ring 6, after the traction rope 54 is tightened, the stop block 62 moves to a position corresponding to the second limit groove 14 along with the rotation of the control ring 6, at the moment, the reset spring 64 releases elasticity, so that the stop block 62 is simultaneously matched with the first limit groove 41 and the second limit groove 14, and the winding barrel 4 and the barrel 1 are relatively fixed; then the cylinder body 1 is inserted into the mounting hole of the ceiling, the spring clamp 3 on the cylinder body is positioned above the ceiling, when the upper end surface of the abutting ring 11 abuts against the lower surface of the ceiling, the snapping block 63 is buckled along the direction away from the axis of the cylinder body 1 to release the matching of the limiting block 62 and the first limiting groove 41 and the second limiting groove 14, at the moment, the hand of an operator still keeps the state of abutting against the lower end surface of the control ring 6 to maintain the relative position of the cylinder body 1 and the ceiling, because the winding cylinder 4 and the cylinder body 1 have no limiting relation and the winding cylinder 4 has no external force to be fixed, the traction rope 54 is in a relaxed state, the torsion spring of the spring clamp 3 starts to restore deformation, so as to drive the free end of the spring clamp 3 to be turned downwards to abut against the upper surface of the ceiling, and the down lamp.

When the down lamp is disassembled, firstly, the fingers of an operator upwards abut against the lower end face of the control ring 6 to maintain the down lamp body 1, then the operator can be matched with the first limiting groove 41 by sliding the limiting block 62, then the operator can rotate the control ring 6 in the forward direction while ensuring the upward force, so as to drive the winding drum 4 to wind the traction rope 54, so that the free end of the spring clamp 3 is driven to be upwards turned to the highest position, then the limiting block 62 is slid, so that the limiting block 62 is matched with the first limiting groove 41 and the second limiting groove 14 at the same time, namely, the down lamp body 1 and the winding drum 4 are relatively fixed, so as to fix the state of the traction rope 54, finally, the hand of the operator can support the down lamp to slowly move down, so as to bring the down lamp away from the mounting hole of a ceiling, and further the disassembly of the.

Through rotatory control ring 6 that exposes in the ceiling, operating personnel can relatively easily follow the spring clamp 3 of external control butt in the ceiling inside and turn over upwards to reduce when taking off down the down lamp and interfere the condition emergence of destroying the mounting hole pore wall of ceiling because of the spring clamp 3 exposes the great volume, thereby ensured the outward appearance integrality of ceiling, the subsequent installation of down lamp of also being convenient for simultaneously, convenient and fast.

As shown in fig. 4, the upper end surface of the winding drum 4 is a guide surface 40, and the height of the guide surface 40 gradually increases along the circumferential direction of the winding drum 4; a compression spring 42 is fixed on the inner wall of the cover body 12, the axis of the compression spring 42 is perpendicular to the guide surface 40, a damping ball 43 is fixed at the free end (lower end) of the compression spring 42, the damping ball 43 can be a steel ball or a rubber ball, and the compression spring 42 forces the damping ball 43 to abut against the guide surface 40.

When the free end of the spring clamp 3 is turned down to fix the cylinder body 1 and the ceiling, the guide surface 40 is arranged, so that the pressure spring 42 is in a gradually compressed state in the rotation process of the winding cylinder 4, the rotation damping of the winding cylinder 4 is gradually increased, the turning-down speed of the spring clamp 3 can be gradually reduced, and the damage to the ceiling caused by the too high speed of the spring clamp 3 is reduced.

As shown in fig. 5, the rubber sheet 44 is provided on the guide surface 40, the rubber sheet 44 is detachably connected to the guide surface 40, and may be bonded to the guide surface 40 in a detachable manner, or may be snapped, that is, the rubber sheet 44 may be provided at any position on the guide surface 40, and the rubber sheet 44 functions to provide a damping section on the guide surface 40, so that when the damping ball 43 contacts the damping section, the instantaneous speed at which the spring clip 3 is about to abut against the ceiling upper surface is greatly reduced, and thus the damage to the ceiling is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a down lamp structure, includes barrel (1) and lamp body (2) of locating in barrel (1), the outer peripheral face of barrel (1) is equipped with a plurality of spring clamps (3), its characterized in that: the winding drum (4) is rotatably sleeved on the outer peripheral surface of the drum body (1), a traction rope (54) is arranged at the free end of the spring clamp (3), the other end of the traction rope (54) bypasses a guide piece arranged on the drum body (1), and the end of the traction rope (54) is fixedly arranged with the winding drum (4); one end of the cylinder body (1) is rotatably connected with a control ring (6) used for controlling the winding drum (4) to rotate.

2. A downlight structure according to claim 1, wherein: the spring clamp (3) is arranged in three, and the three spring clamps (3) are uniformly distributed along the cylinder body (1) as the center circumference.

3. A downlight structure according to claim 1, wherein: the guide piece comprises a first pulley (51), a second pulley (52) and a third pulley (53) which are arranged on the outer peripheral wall of the cylinder body (1), wherein the first pulley (51) is positioned above the connecting position of the spring clamp (3) and the cylinder body (1), and the second pulley (52) and the third pulley (53) are both positioned below the connecting position of the spring clamp (3) and the cylinder body (1); the rotation axis of the first pulley (51) is parallel to the rotation axis of the spring clamp (3) and the rotation axis of the second pulley (52) respectively, the rotation axis of the third pulley (53) is parallel to the rotation axis of the winding drum (4), and the traction rope (54) starts from the free end of the spring clamp (3) and sequentially bypasses the first pulley (51), the second pulley (52) and the third pulley (53).

4. A downlight structure according to claim 1, wherein: the lower extreme periphery wall of barrel (1) is fixed with flaky butt ring (11), butt ring (11) are located directly over control ring (6).

5. A downlight structure according to claim 4, wherein: the upper end face of the abutting ring (11) is provided with a plurality of point-shaped rubber pads (111), the lower end face of the control ring (6) is provided with anti-skid grains, and the anti-skid grains are radially distributed outwards by taking the axis of the control ring (6) as the center.

6. A downlight structure according to claim 4, wherein: the control ring (6) is connected with a limiting block (62) along the radial direction of the control ring, and the winding drum (4) is provided with a first limiting groove (41) for the limiting block (62) to insert in a penetrating mode along the radial direction.

7. A downlight structure according to claim 6, wherein: the peripheral wall of barrel (1) is seted up and is supplied stopper (62) male second spacing groove (14).

8. A downlight structure according to claim 6, wherein: the drum body (1) is provided with a pressure spring (42), a damping ball (43) is arranged at the free end of the pressure spring (42), the damping ball (43) is abutted to the end face of the winding drum (4), the end face is a guide face (40), and the height of the guide face (40) is gradually increased along the circumferential direction of the winding drum (4).

9. A downlight structure according to claim 8, wherein: the guide surface (40) is detachably provided with a rubber sheet (44).

10. A down lamp structure dismounting method according to claim 7, characterized in that: when the down lamp is installed, firstly, the spring clamp (3) is turned up manually, namely, the spring clamp (3) is turned upwards and is close to the barrel body (1), at the moment, a torsion spring of the spring clamp (3) is stressed, the traction rope (54) is loosened, then the limiting block (62) is ensured to be matched with the first limiting groove (41), the winding barrel (4) is driven to tighten the traction rope (54) through the forward rotation of the control ring (6), and after the traction rope (54) is tightened, the limiting block (62) is matched with the first limiting groove (41) and the second limiting groove (14) at the same time, so that the winding barrel (4) and the barrel body (1) are relatively fixed; then the barrel body (1) is inserted into a mounting hole of a ceiling, the spring clamp (3) on the barrel body is positioned above the ceiling, when the upper end face of the abutting ring (11) abuts against the lower surface of the ceiling, the limiting block (62) is removed from being matched with the first limiting groove (41) and the second limiting groove (14) at the same time, at the moment, the hand of an operator still keeps a state of abutting against the lower end face of the control ring (6) to maintain the relative position of the barrel body (1) and the ceiling, and as the winding drum (4) has no limiting relation with the barrel body (1) and the winding drum (4) has no external force to be fixed, the traction rope (54) is in a loosening state, the torsion spring of the spring clamp (3) begins to restore to be deformed to drive the free end of the spring clamp (3) to be turned downwards to abut against the upper surface of the ceiling, so as to finish the; when the down lamp is disassembled, firstly, the fingers of an operator upwards abut against the lower end surface of the control ring (6) to maintain the cylinder body (1), then the first limiting groove (41) is matched with the limiting block (62) through sliding, then the operator positively rotates the control ring (6) while ensuring the upward force to drive the winding drum (4) to wind the traction rope (54), thereby driving the free end of the spring clamp (3) to be folded upwards to the highest position, then the limiting block (62) is slid to ensure that the limiting block (62) is simultaneously matched with the first limiting groove (41) and the second limiting groove (14), the cylinder body (1) and the winding drum (4) are relatively fixed to fix the state of the traction rope (54), and finally, the hand of an operator supports the down lamp to slowly move downwards so as to take the down lamp downwards from the mounting hole of the ceiling, so that the down lamp is dismounted.