Lamp capable of locking lamp holder by using scaling assembly

Abstract

The utility model discloses a lamp using a scaling component to lock a lamp cap, which comprises the lamp cap used for emitting light and a support seat supporting the lamp cap to rotate, the lamp cap and the support seat are matched and pivoted through a pivoting shaft and a shaft sleeve, the shaft sleeve is sleeved outside the pivoting shaft, the scaling component is provided with a deformation piece and an operation piece, and the deformation piece is provided with a deformation hole. The operating piece acts on the deformation piece in the length direction of the pivot joint shaft, so that after the deformation piece deforms in the direction perpendicular to the length direction of the pivot joint shaft, the abutting part acts on the shaft sleeve or the pivot joint shaft to limit relative rotation of the shaft sleeve or the pivot joint shaft. The deformation piece converts stress in the length direction of the pivot joint shaft into acting force perpendicular to the length direction of the pivot joint shaft through deformation, the acting force acts on the shaft sleeve or the pivot joint shaft, modification of an existing structure can be reduced as much as possible, the existing pivot joint shaft and the shaft sleeve are directly used for limiting rotation of the lamp holder, and stepless locking is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lamp technical field, more specifically, relate to a lamp of using zooming assembly locking lamp holder. BACKGROUND

[0002] The lamp generally includes the lamp holder for emitting light and the support seat of supporting the rotation of the lamp holder, the rotation angle of the lamp holder relative to the support seat can be manually adjusted, also can use the motor electrically adjusted. But in the performance process, often is fixed in certain specific angle with the lamp holder and uses, if the motor maintains continuously, will waste the electric power, so generally is through locking assembly and locks the lamp holder. And the specific angle required by different performances is not same, in the prior art, generally is through the selective cooperation of the lock tongue and the multiple lock positions on the lock disc, selectively fixes the lamp holder in multiple specific angles, but this way cannot fix the lamp holder in any angle, realizes stepless locking. SUMMARY

[0003] The utility model discloses to overcome the at least one defect of prior art, provide a lamp of using zooming assembly locking lamp holder, utilize the interference pivot joint axle or axle sleeve of deformation piece, to limit the relative rotation of both, to realize stepless locking.

[0004] To solve the above technical problem, the utility model adopts the technical scheme: a lamp of using zooming assembly locking lamp holder, including the lamp holder for emitting light and the support seat of supporting the rotation of the lamp holder, the lamp holder with pivot joint axle and axle sleeve cooperation pivot joint between the support seat, the axle sleeve is set in the pivot joint axle outside, still include zooming assembly, the zooming assembly has deformation piece and operating part, the operating part in the length direction of pivot joint axle acts on the deformation piece, to make the deformation piece after deforming in the direction perpendicular to the length of pivot joint axle, and the abutting part acts on the axle sleeve or pivot joint axle to limit the relative rotation of both.

[0005] The lamp of using zooming assembly locking lamp holder, when the lamp holder is in any angle relative to the support seat, can be through operating part in the length direction of pivot joint axle and exert force to deformation piece, make the deformation piece after deforming in the direction perpendicular to the length of pivot joint axle, and the abutting part acts on the axle sleeve or pivot joint axle to limit the relative rotation of both, finally realize the stepless locking of the lamp holder. The deformation piece is through deforming and turns the force along the length direction of pivot joint axle to the force perpendicular to the length direction of pivot joint axle, and acts on the axle sleeve or pivot joint axle, can reduce the modification to the existing structure as far as possible, directly utilizes the pivot joint axle, the axle sleeve of existing to realize the restriction of the rotation of the lamp holder, achieves stepless locking.

[0006] Further, the deformation member comprises a rigid connecting plate and a rigid inclined plate connected to each other, and the operating member applies force to the deformation member to change the angle between the inclined plate and the connecting plate, so as to move the abutting part. Since the deformation of the deformation member is achieved by changing the angle between the inclined plate and the connecting plate instead of depending on the elasticity of the material, the deformation member can bear greater external force and has better durability.

[0007] Further, the end of the inclined plate away from the connecting plate serves as the abutting part, and the operating member acts on the connecting plate to move the abutting part in a direction perpendicular to the length of the pivot shaft. Since it is necessary to ensure that the angle between the inclined plate and the pivot shaft is as large as possible to better amplify the force of the operating member and transmit it to the shaft sleeve or the pivot shaft, the operating member acts on the connecting plate, and the end of the inclined plate away from the connecting plate serves as the abutting part, so that the angle between the inclined plate and the connecting plate can be kept in a larger range, thereby avoiding metal fatigue caused by excessive bending.

[0008] Further, the operating member is a pull rod extending along the length of the pivot shaft. The pull rod moves along the length of the pivot shaft, thereby changing the angle between the inclined plate and the connecting plate.

[0009] Further, the pull rod is threadedly connected with a nut, and the pull rod rotates relative to the nut to make the abutting part on the pull rod or the nut extrude the deformation member to generate deformation. By means of the nut, the rotation of the pull rod relative to the nut can be converted into movement along the length of the pivot shaft, which is more convenient for applying force, and the torque can be increased, so that the pull rod can move along the length of the pivot shaft with smaller torsion.

[0010] Further, an additional seat is further included, the additional seat has a through hole for the pull rod to extend into, the abutting protrusion passes through the through hole to abut one side of the deformation member, the nut abuts the other side of the deformation member, and the deformation member is clamped between the nut and the abutting protrusion to be deformed under force.

[0011] Further, a limiting column is further included to limit the angle between the connecting plate and the inclined plate from exceeding a predetermined range. The length of the limiting column is designed according to requirements, and the connecting plate is abutted when it approaches the limiting column to limit its further movement.

[0012] Further, the connecting plate is connected with at least two inclined plates in the circumferential direction, two deforming members are oppositely arranged, the connecting plates are away from each other, and the end portions of the inclined plates abut against each other. At least two inclined plates are connected together to bear stronger force, and the fracture problem of the connection between a single inclined plate and the connecting plate due to metal fatigue and the like can be avoided.

[0013] Further, the end portions of the inclined plates of two deforming members abutting against each other are jointly sleeved in a fixed sleeve. The fixed sleeve can link the end portions of two inclined plates abutting against each other as a whole to jointly advance and retreat, and avoid sliding down when abutting against each other.

[0014] Further, the abutting portion is provided with a friction plate. The friction plate can increase the friction.

[0015] Further, the shaft sleeve is connected with the lamp holder, and the pivot shaft is connected with the support seat. That is, the shaft sleeve rotates with the lamp holder, and the pivot shaft is stationary with the support seat.

[0016] Further, the deforming member and the operating member are installed on the pivot shaft. When the lamp holder rotates, if the deforming member and the operating member are not operated, they are both in a stationary state with the support seat and will not rotate, and the user experience is better.

[0017] Further, the pivot shaft is provided with a containing cavity containing the deforming member, and a hollow hole for the abutting portion to extend out is arranged on the cavity wall of the containing cavity. The containing cavity can hide the deforming member, and the hollow hole can ensure that the abutting portion of the deforming member can smoothly extend out to abut against the shaft sleeve.

[0018] Further, the bottom of the containing cavity is provided with a avoiding hole corresponding to the operating member. The avoiding hole provides more space for the movement of the operating member, so that it does not protrude too much from the pivot shaft.

[0019] Further, the pivot shaft is detachably connected with an additional seat, and the containing cavity is located in the additional seat. The additional seat can install and contain the deforming member without changing the original pivot shaft as much as possible.

[0020] Furthermore, the additional seat has an expansion portion at the middle of its outer side along the length of the pivot shaft. The hollow hole is located in the expansion portion, and bearings are sleeved at both ends of the expansion portion. The expansion portion abuts against the inner ring of the bearing, and the outer ring of the bearing abuts against the bushing or a pressure plate connected to the bushing. The expansion portion can support the inner ring of the bearing and provide more space, allowing the deformable component to be made larger, thereby generating a longer torque and amplifying the force of the operating component. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the lamp fixture that uses a scaling component to lock the lamp head according to this utility model.

[0022] Figure 2 This is a cross-sectional structural diagram of the lamp fixture that uses a scaling component to lock the lamp head according to this utility model.

[0023] Figure 3 yes Figure 2 A magnified view of a portion of the image.

[0024] Figure 4 This is a schematic diagram of the cooperation structure between the scaling component of this utility model and the pivot shaft and bushing.

[0025] Figure 5 This is a cross-sectional structural diagram of the scaling component of this utility model combined with the pivot shaft and bushing.

[0026] In the picture:

[0027] 110. Lamp holder; 120. Support base; 121. Chassis; 122. Support arm; 200. Pivot shaft; 210. Additional seat; 211. Receiving cavity; 212. Hole; 213. Through hole; 214. Clearance hole; 215. Expansion part; 220. Bearing; 221. Pressure plate; 300. Bushing; 400. Operating component; 410. Supporting protrusion; 420. Nut; 430. Knob; 500. Deformable part; 510. Connecting plate; 520. Inclined plate; 521. Supporting part; 530. Bending piece; 540. Limiting post; 550. Fixing sleeve; 551. Open end; 552. Receiving groove; 560. Friction plate. Detailed Implementation

[0028] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0029] like Figures 1 to 5This utility model provides a lamp fixture that uses a scaling component to lock the lamp head, including a lamp head 110 for emitting light and a support base 120 for supporting the rotation of the lamp head 110. The lamp head 110 and the support base 120 are pivotally connected by a pivot shaft 200 and a bushing 300. The bushing 300 is sleeved outside the pivot shaft 200. The fixture also includes a scaling component, which has a deformable part 500 and an operating part 400. The operating part 400 acts on the deformable part 500 in the length direction of the pivot shaft 200 so that after the deformable part 500 deforms in a direction perpendicular to the length of the pivot shaft 200, the abutting part 521 acts on the bushing 300 or the pivot shaft 200 to restrict the relative rotation of the two.

[0030] The lamp fixture using the scaling component to lock the lamp head can, at any angle relative to the support base 120, apply force to the deformable member 500 along the length direction of the pivot shaft 200 via the operating member 400. This causes the deformable member 500 to deform in a direction perpendicular to the length of the pivot shaft 200, after which the abutment portion 521 acts on the bushing 300 or the pivot shaft 200, thereby restricting their relative rotation and ultimately achieving stepless locking of the lamp head 110. By deforming the member 500, the force along the length direction of the pivot shaft 200 is redirected to a force perpendicular to the length direction of the pivot shaft 200, acting on the bushing 300 or the pivot shaft 200. This minimizes modifications to the existing structure, directly utilizing the existing pivot shaft 200 and bushing 300 to restrict the rotation of the lamp head 110, achieving stepless locking.

[0031] In this embodiment, the support base 120 includes a housing 121 and a support arm 122 fixedly connected to the housing 121, and the lamp head 110 is pivotally connected to the support arm 122. In other embodiments, the support base 120 may also include a housing 121 and a support arm 122 pivotally connected to the housing 121, and the lamp head 110 is pivotally connected to the support arm 122.

[0032] In a preferred embodiment of this invention, the deformable member 500 includes a rigid connecting plate 510 and a rigid inclined plate 520 connected to each other. The operating member 400 applies force to the deformable member 500 to change the angle between the inclined plate 520 and the connecting plate 510, thereby moving the supporting portion 521. Both the connecting plate 510 and the inclined plate 520 are rigid, and the deformation of the deformable member 500 is achieved by changing the angle between the inclined plate 520 and the connecting plate 510, rather than relying on an elastic material. Therefore, the deformable member 500 can withstand greater external forces and has better durability.

[0033] Optionally, the deformable member 500 can deform such that the end of the inclined plate 520 away from the connecting plate 510 acts on the bushing 300 or the pivot shaft 200, that is, the end of the inclined plate 520 away from the connecting plate 510 serves as the abutment part 521. Alternatively, it can deform such that the connecting plate 510 acts on the bushing 300 or the pivot shaft 200, that is, the connecting plate 510 serves as the abutment part 521 (in which case the operating member 400 acts on the inclined plate 520).

[0034] Optionally, the connecting plate 510 and the inclined plate 520 are respectively connected with bending pieces 530 to enhance their respective strengths.

[0035] In a preferred embodiment of this invention, the end of the inclined plate 520 furthest from the connecting plate 510 serves as the abutment portion 521. The operating member 400 acts on the connecting plate 510 to move the abutment portion 521 in a direction perpendicular to the length of the pivot shaft 200. To ensure that the angle between the inclined plate 520 and the pivot shaft 200 is as large as possible, so as to better amplify and transmit the force of the operating member 400 to the bushing 300 or the pivot shaft 200, the operating member 400 acts on the connecting plate 510, and the end of the inclined plate 520 furthest from the connecting plate 510 serves as the abutment portion 521. This allows the angle between the inclined plate 520 and the connecting plate 510 to be maintained within a large range, thereby avoiding metal fatigue that may result from excessive bending.

[0036] Preferably, the angle between the inclined plate 520 and the connecting plate 510 is greater than 120 degrees, and more preferably greater than 150 degrees.

[0037] In a preferred embodiment of this invention, the operating member 400 is a pull rod extending along the length direction of the pivot shaft 200. The pull rod moves along the length direction of the pivot shaft 200, thereby changing the angle between the inclined plate 520 and the connecting plate 510.

[0038] In a preferred embodiment of this utility model, the pull rod is threadedly connected to a nut 420. The pull rod rotates relative to the nut 420, causing the abutment protrusion 410 on the pull rod or the nut 420 to compress the deformable member 500, resulting in deformation. Through the nut 420, the rotation of the pull rod relative to the nut 420 can be converted into movement along the length direction of the pivot shaft 200, making it easier to apply force and increasing the torque. Movement of the pull rod along the length direction of the pivot shaft 200 can be achieved with a smaller torque.

[0039] Preferably, a knob 430 is connected to the end of the pull rod away from the nut 420 to facilitate rotation of the pull rod.

[0040] Preferably, the diameter of the threaded connection between the pull rod and the nut 420 is less than 1.5 cm, and more preferably less than 1 cm, in order to increase the distance between the pull rod and the abutment 521, thereby increasing the torque and maximizing its own force.

[0041] Preferably, provided that rotating the pull rod allows it to move significantly along the length of the pivot shaft 200, the smaller the pitch of the thread of the pull rod, the easier it will be to rotate the pull rod.

[0042] In a preferred embodiment of the present invention, an additional seat 210 is further included. The additional seat 210 has a through hole 213 into which the pull rod extends. The abutting protrusion 410 passes through the through hole 213 and abuts against one side of the deformable member 500. The nut 420 abuts against the other side of the deformable member 500. The deformable member 500 is clamped between the nut 420 and the abutting protrusion 410 and is deformed by force.

[0043] In a preferred embodiment of this invention, a limiting post 540 is further included to limit the angle between the connecting plate 510 and the inclined plate 520 from exceeding a predetermined range. The length of the limiting post 540 is designed as needed to abut against the connecting plate 510 when it approaches, thus restricting its further movement.

[0044] Preferably, the length of the limiting post 540 is greater than 0.5 cm.

[0045] Preferably, the pull rod passes through the limiting post 540 along its length and is connected to the nut 420.

[0046] In a preferred embodiment of this invention, the connecting plate 510 is circumferentially connected to at least two inclined plates 520, the two deformable members 500 are arranged opposite each other, and the connecting plates 510 are back-to-back with each other, while the ends of the inclined plates 520 abut against each other. The presence of at least two inclined plates 520 sharing the load provides greater load-bearing capacity and avoids breakage at the connection point between a single inclined plate 520 and the connecting plate 510 due to metal fatigue or other reasons.

[0047] Preferably, the limiting post 540 is disposed between the connecting plates 510 of the two opposing deformable members 500. When the operating member 400 is a pull rod extending along the length direction of the pivot shaft 200, the pull rod passes through the limiting post 540 and the two connecting plates 510 and is threadedly connected to the nut 420. At this time, the length of the limiting post 540 is greater than 1 cm.

[0048] Preferably, the connecting plate 510 is evenly connected with four inclined plates 520 in the circumferential direction.

[0049] In a preferred embodiment of this invention, the ends of the inclined plates 520 of the two deformable members 500 that abut against each other are together sleeved within a fixed sleeve 550. The fixed sleeve 550 can connect the ends of the two inclined plates 520 that abut against each other into a whole, allowing them to move forward and backward together, thus preventing slippage during abutment.

[0050] Optionally, the deformable member 500 may abut against the bushing 300 or the pivot shaft 200 using the fixing sleeve 550, or it may abut against the bushing 300 or the pivot shaft 200 using the connecting plate 510.

[0051] Preferably, the fixing sleeve 550 is cylindrical, sealed at one end and open at the other, with the open end 551 accommodating the ends of the inclined plates 520 that abut against each other.

[0052] In a preferred embodiment of this invention, the supporting portion 521 is provided with a friction plate 560. The friction plate 560 can increase the frictional force.

[0053] Preferably, the friction plate 560 is disposed on the side of the fixing sleeve 550 away from the deformable member 500, and the fixing sleeve 550 is provided with a receiving groove 552 corresponding to the friction plate 560.

[0054] In a preferred embodiment of this utility model, the bushing 300 is connected to the lamp holder 110, and the pivot shaft 200 is connected to the support base 120. That is, the bushing 300 rotates with the lamp holder 110, and the pivot shaft 200 remains stationary with the support base 120.

[0055] In other embodiments, the bushing 300 may be connected to the support base 120, and the pivot shaft 200 may be connected to the lamp holder 110.

[0056] In a preferred embodiment of this utility model, the deformable component 500 and the operating component 400 are mounted on the pivot shaft 200. When the lamp head 110 rotates, if the deformable component 500 and the operating component 400 are not operated, they remain stationary along with the support base 120 and will not rotate, resulting in a better user experience.

[0057] In this embodiment, the nut 420, which is threadedly connected to the pull rod, is fixed to the pivot shaft 200.

[0058] In other embodiments, the deformable member 500 and the operating member 400 may be mounted on the bushing 300.

[0059] In a preferred embodiment of this utility model, the pivot shaft 200 is provided with a receiving cavity 211 for accommodating the deformable member 500, and the cavity wall of the receiving cavity 211 is provided with a hollow hole 212 for the abutment portion 521 to extend out. The receiving cavity 211 can hide the deformable member 500, and the hollow hole 212 can ensure that the abutment portion 521 of the deformable member 500 can extend smoothly to abut against the bushing 300.

[0060] In a preferred embodiment of this invention, a clearance hole 214 is provided at the bottom of the receiving cavity 211 corresponding to the operating member 400. The clearance hole 214 provides more space for the movement of the operating member 400, thereby minimizing its protrusion from the pivot shaft 200.

[0061] In a preferred embodiment of this utility model, an additional seat 210 is detachably connected to the pivot shaft 200, and the receiving cavity 211 is located in the additional seat 210. The additional seat 210 can install and accommodate the deformable part 500 without altering the original pivot shaft 200 as much as possible.

[0062] In this embodiment, one end of the additional seat 210 connected to the pivot shaft 200 is open, through which the deformable member 500 enters the receiving cavity 211. The other end of the additional seat 210 is sealed, having only a through hole 213 for the pull rod to extend into.

[0063] In a preferred embodiment of this utility model, the auxiliary seat 210 has an expansion portion 215 at the middle of its outer side along the length direction of the pivot shaft 200. The hollow hole 212 is located in the expansion portion 215. Bearings 220 are sleeved at both ends of the expansion portion 215. The expansion portion 215 abuts against the inner ring of the bearing 220, and the outer ring of the bearing 220 abuts against the bushing 300 or the pressure plate 221 connected to the bushing 300. The expansion portion 215 can support the inner ring of the bearing 220 on the one hand, and provide more space on the other hand, so that the deformable member 500 can be made larger, thereby generating a longer torque and amplifying the force of the operating member 400.

[0064] In this invention, the pull rod is threadedly connected to the nut 420. A knob 430 is connected to the end of the pull rod away from the nut 420. The diameter of the threaded connection between the pull rod and the nut 420 is less than 1.5 cm. Furthermore, provided that rotating the pull rod allows it to move significantly along the length of the pivot shaft 200, the smaller the pitch of the pull rod's thread, the better. Also, the angle between the inclined plate 520 and the connecting plate 510 is greater than 120 degrees, and the inclined plate 520 is away from the connecting plate 510. The end portion serves as the supporting part 521. The operating member 400 acts on the connecting plate 510 to move the supporting part 521 in a direction perpendicular to the length of the pivot shaft 200. In this way, the operating member 400 and the deformable member 500 can amplify the force applied by the user to the knob 430 at each step, and act on the bushing 300 or the pivot shaft 200 in a progressive manner. This allows the lamp head 110 to be locked at any angle without the use of external tools, achieving stepless adjustment.

[0065] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A lighting fixture that uses a scaling component to lock the lamp head, characterized in that, The device includes a lamp head (110) for emitting light and a support base (120) for supporting the rotation of the lamp head (110). The lamp head (110) and the support base (120) are pivotally connected by a pivot shaft (200) and a bushing (300). The bushing (300) is sleeved outside the pivot shaft (200). The device also includes a scaling component, which has a deformable part (500) and an operating part (400). The operating part (400) acts on the deformable part (500) in the length direction of the pivot shaft (200) so that after the deformable part (500) deforms in a direction perpendicular to the length of the pivot shaft (200), the abutment part (521) acts on the bushing (300) or the pivot shaft (200) to limit the relative rotation of the two.

2. The luminaire using a scaling component to lock the lamp head according to claim 1, characterized in that, The deformable member (500) includes a rigid connecting plate (510) and a rigid inclined plate (520) that are interconnected. The operating member (400) applies force to the deformable member (500) to change the angle between the inclined plate (520) and the connecting plate (510) so as to move the abutment (521).

3. The luminaire using a scaling component to lock the lamp head according to claim 2, characterized in that, The end of the inclined plate (520) away from the connecting plate (510) serves as the abutment (521), and the operating member (400) acts on the connecting plate (510) to move the abutment (521) in a direction perpendicular to the length of the pivot shaft (200).

4. The luminaire using a scaling component to lock the lamp head according to claim 2 or 3, characterized in that, The operating element (400) is a pull rod extending along the length direction of the pivot shaft (200).

5. The luminaire using a scaling component to lock the lamp head according to claim 4, characterized in that, The pull rod is threaded with a nut (420), and the pull rod rotates relative to the nut (420) so that the abutment protrusion (410) on the pull rod or the nut (420) squeezes the deformable part (500) to produce deformation.

6. The luminaire using a scaling component to lock the lamp head according to claim 5, characterized in that, It also includes an auxiliary seat (210) having a through hole (213) into which the pull rod extends, the abutting protrusion (410) passing through the through hole (213) and abutting one side of the deformable member (500), the nut (420) abutting the other side of the deformable member (500), and the deformable member (500) being clamped between the nut (420) and the abutting protrusion (410) and deformed by force.

7. The luminaire using a scaling component to lock the lamp head according to claim 2 or 3, characterized in that, It also includes a limiting post (540) that limits the angle between the connecting plate (510) and the inclined plate (520) from exceeding a predetermined range.

8. The luminaire using a scaling component to lock the lamp head according to claim 2 or 3, characterized in that, The connecting plate (510) is circumferentially connected to at least two inclined plates (520), the two deformable members (500) are arranged opposite each other, the connecting plates (510) are opposite to each other, and the ends of the inclined plates (520) abut against each other.

9. The luminaire using a scaling component to lock the lamp head according to claim 8, characterized in that, The ends of the inclined plates (520) of the two deformable parts (500) that abut against each other are together fitted into a fixed sleeve (550).

10. The luminaire using a scaling component to lock the lamp head according to claim 1, characterized in that, The abutment part (521) is provided with a friction plate (560).

11. The luminaire using a scaling component to lock the lamp head according to claim 1, characterized in that, The bushing (300) is connected to the lamp holder (110), and the pivot shaft (200) is connected to the support base (120).

12. The luminaire using a scaling component to lock the lamp head according to claim 11, characterized in that, The deformable component (500) and the operating component (400) are mounted on the pivot shaft (200).

13. The luminaire using a scaling component to lock the lamp head according to claim 12, characterized in that, The pivot shaft (200) is provided with a receiving cavity (211) for accommodating the deformable part (500), and the cavity wall of the receiving cavity (211) is provided with a hollow hole (212) for the support part (521) to extend out.

14. The luminaire using a scaling component to lock the lamp head according to claim 13, characterized in that, The bottom of the receiving cavity (211) is provided with a clearance hole (214) corresponding to the operating member (400).

15. The luminaire using a scaling component to lock the lamp head according to claim 13, characterized in that, An additional seat (210) is detachably connected to the pivot shaft (200), and the receiving cavity (211) is located on the additional seat (210).

16. The luminaire using a scaling component to lock the lamp head according to claim 15, characterized in that, The additional seat (210) has an expansion portion (215) at the middle of the outer side along the length direction of the pivot shaft (200). The hollow hole (212) is located in the expansion portion (215). Bearings (220) are sleeved at both ends of the expansion portion (215). The expansion portion (215) abuts against the inner ring of the bearing (220). The outer ring of the bearing (220) abuts against the bushing (300) or the pressure plate (221) connected to the bushing (300).

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