Zoom positioning structure and luminaire

Abstract

The application provides a zoom positioning structure and a lamp. The zoom positioning structure comprises a rotating member, a lamp shell, a stopper and an elastic positioning member. The stopper and the elastic positioning member are arranged in the threaded area and are arranged opposite to each other between the lamp shell and the rotating member. The stopper extends along the rotating axis of the rotating member in the circumferential direction. The side of the stopper close to the elastic positioning member is provided with a plurality of stop grooves. The stop grooves are arranged along the extension direction of the stopper. One of the stopper and the elastic positioning member is connected to the lamp shell, and the other is connected to the rotating member. The elastic positioning member is configured to be clamped at any stop groove and can be elastically contracted in the direction away from the stopper when it is separated from the corresponding stop groove. The zoom positioning structure can improve the service life and the focusing smoothness on the basis of better ensuring the stability of the focal length adjustment and the accuracy of the zoom adjustment.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to a zoom positioning structure and a lighting fixture. Background Technology

[0002] Many lighting fixtures adjust the distance between the lens and the light source by combining spiral grooves and protrusions, thus achieving focusing. For example, in patent application CN 201810460223.4, the threaded protrusion is threaded into the spiral groove, allowing the inner cylinder for mounting the lens to extend or retract relative to the movable lamp body for mounting the lamp panel, thereby achieving focusing. However, the threaded protrusion is prone to movement in the threaded area, meaning its set position is easily changed, leading to changes in focal length and poor focusing stability. Therefore, as in patent application CN 201810460223.4... The utility model patent application No. 201921314801.X describes a design with multiple sequentially arranged stepped platforms, the distance between these platforms and the lens end face increasing sequentially. Essentially, multiple steps are set on the groove wall of the threaded area, arranged sequentially along the extension direction of the threaded area, thus limiting and fixing the gear and ensuring focusing stability. However, this design relies on springs to achieve close contact with the stepped platforms, and the springs need to maintain an elastic deformation state at all times, which can easily lead to elastic fatigue and irreversible permanent deformation. This results in the lens not actually moving to close contact with the stepped platforms, affecting the accuracy of zoom adjustment. Furthermore, if the toothed structure is formed within the groove, to ensure zoom adjustment accuracy, the protrusion's peripheral wall would be in close contact with the toothed structure, which would not only cause significant wear, affecting the lamp's lifespan, but also result in poor focusing smoothness. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a zoom positioning structure and lamp that can improve service life and focus smoothness while ensuring good stability of focus adjustment and accuracy of zoom adjustment.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A zoom positioning structure includes a rotating component and a lamp housing. The rotating component is rotatably connected to the lamp housing. The lamp housing has a threaded area that spirally surrounds the rotation axis of the rotating component. The rotating component is partially engaged with and slidably connected to the threaded area. The zoom positioning structure also includes a stop and an elastic positioning component. The stop and the elastic positioning component are both offset from the threaded area and positioned opposite each other between the lamp housing and the rotating component. The stop extends circumferentially along the rotation axis of the rotating component. The side of the stop near the elastic positioning component has multiple stop grooves arranged along the extension direction of the stop. One of the stop and the elastic positioning component is connected to the lamp housing and the other is connected to the rotating component. The elastic positioning component is configured to engage with any of the stop grooves and elastically contract away from the stop when disengaging from the corresponding stop groove.

[0006] In one embodiment, the elastic positioning element is a spring pin, which is connected to the lamp housing or the rotating element, and the free extension end of the spring pin is positioned toward the stop element and engaged with any of the stop grooves.

[0007] When the spring pin disengages from the corresponding stop groove, the stop member presses the free end of the spring pin to move away from the stop member.

[0008] In one embodiment, the elastic positioning member is in a fully extended state when engaged with the stop groove.

[0009] In one embodiment, the rotating member includes a rotating part and a sliding part. The rotating part is rotatably connected to the lamp housing and at least partially exposed to the lamp housing. The threaded area is circumferentially arranged around the rotation axis of the rotating part. The sliding part is slidably connected to the threaded area, and the sliding part partially protrudes from the threaded area and is connected to the rotating part.

[0010] One of the stop member and the elastic positioning member is connected to the lamp housing and the other is connected to the rotating part.

[0011] In one embodiment, the lamp housing is provided with a rotating area, the rotating area is circumferentially arranged around the rotation axis of the rotating part, and the rotating part is partially disposed at the rotating area and slidably connected to the rotating area;

[0012] The rotating part is provided with a sliding area, the extension direction of the sliding area is parallel to the rotation axis of the rotating part, the sliding part protrudes from the threaded area and is engaged with the sliding area, and the sliding part is slidably connected to the sliding area;

[0013] The stop member is circumferentially arranged around the rotation axis of the rotating member.

[0014] In one embodiment, the sliding area is a groove, a hole, or a rail.

[0015] In one embodiment, the rotating area is a rotating hole, a rotating groove, or a rotating slide rail.

[0016] In one embodiment, the stop is spirally arranged around the rotation axis of the rotating member.

[0017] In one embodiment, the threaded area is a threaded groove, a threaded hole, or a threaded slide rail.

[0018] A lamp includes an optical element, a light source element, and a zoom positioning structure as described in any of the above embodiments. One of the optical element and the light source element is connected to the rotating member and the other is connected to the lamp housing. The light source element emits light, and the light at least partially enters the optical element and exits through the optical element.

[0019] In one embodiment, one of the optical element and the light source element is tumbled or fixed to the rotating element and the other is tumbled or fixed to the lamp housing.

[0020] Compared with the prior art, the present invention has at least the following advantages:

[0021] The zoom positioning structure of this invention features a threaded area on the lamp housing that spirally surrounds the rotation axis of the rotating component. The rotating component is partially engaged with and slidably connected to the threaded area, ensuring accurate and stable movement of the rotating component relative to the lamp housing under the engagement limit of the threaded area. This facilitates accurate zoom adjustment when one of the rotating component and the lamp housing is used to connect to the light source and the other to the optical component. Furthermore, the stop and elastic positioning components are positioned outside the threaded area, with multiple stop grooves arranged along the extension direction of the stop. The elastic positioning component is configured to engage with any stop groove and elastically contract away from the stop when disengaging from the corresponding stop groove. This engages with the stop groove to limit the rotation of the rotating component, effectively ensuring the stability of the focus adjustment, reducing wear on the elastic positioning component and the stop, and improving the service life of the zoom positioning structure. In addition, it also improves the smoothness of focusing. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the zoom positioning structure according to one embodiment of the present invention.

[0024] Figure 2 for Figure 1 Exploded view of the zoom positioning structure shown;

[0025] Figure 3 for Figure 1 A partial cross-sectional view of the zoom positioning structure shown.

[0026] Figure 4 for Figure 1 A cross-sectional view of the zoom positioning structure shown.

[0027] Figure 5 for Figure 4 A magnified view of point A of the zoom positioning structure shown. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] This application provides a zoom positioning structure. The zoom positioning structure includes a rotating component, a lamp housing, a stop component, and an elastic positioning component. The rotating component is rotatably connected to the lamp housing, which has a threaded area. The threaded area spirally surrounds the rotation axis of the rotating component and is circumferentially arranged. A portion of the rotating component is engaged with and slidably connected to the threaded area. The stop component and the elastic positioning component are both offset from the threaded area and positioned opposite each other between the lamp housing and the rotating component. The stop component extends circumferentially along the rotation axis of the rotating component. Multiple stop grooves are provided on the side of the stop component near the elastic positioning component, arranged along the extension direction of the stop component. One of the stop component and the elastic positioning component is connected to the lamp housing, and the other is connected to the rotating component. The elastic positioning component is configured to engage with any stop groove and elastically contract away from the stop component when disengaged from the corresponding stop groove. Further, one of the rotating component and the lamp housing is used to connect to a light source component, and the other is used to connect to an optical component. It can be understood that the stop extending circumferentially along the rotation axis of the rotating component refers to the stop being spirally arranged around the rotation axis of the rotating component, or the stop being arranged circumferentially around the rotation axis of the rotating component.

[0032] The aforementioned zoom positioning structure arranges a threaded area on the lamp housing circumferentially around the rotation axis of the rotating component. The rotating component is partially engaged with and slidably connected to the threaded area, ensuring accurate and stable movement of the rotating component relative to the lamp housing under the engagement limit of the threaded area. This facilitates accurate zoom adjustment when one of the rotating component and the lamp housing is used to connect to the light source and the other to the optical component. Furthermore, the stop and elastic positioning components are positioned outside the threaded area, with multiple stop grooves arranged along the extension direction of the stop. The elastic positioning component is configured to engage with any stop groove and elastically contract away from the stop when disengaging from the corresponding stop groove. This ensures the rotation limit of the rotating component by engaging with the stop groove, effectively guaranteeing the stability of focus adjustment, reducing wear on the elastic positioning component and the stop, and improving the service life of the zoom positioning structure. In addition, it also improves the smoothness of focusing.

[0033] To better understand the zoom positioning structure of this application, the following further explanation is provided:

[0034] Please refer to the following: Figures 1 to 3One embodiment of the zoom positioning structure 10 includes a rotating member 100, a lamp housing 200, a stop member 300, and an elastic positioning member 400. The rotating member 100 is rotatably connected to the lamp housing 200. The lamp housing 200 is provided with a threaded area 201, which is spirally arranged around the rotation axis of the rotating member 100. The rotating member 100 is partially engaged with and slidably connected to the threaded area 201. Both the stop member 300 and the elastic positioning member 400 are disposed away from the threaded area 201 and are positioned opposite each other between the lamp housing 200 and the rotating member 100. The stop member 300 extends circumferentially along the rotation axis of the rotating member 100. The side of the stop member 300 near the elastic positioning member 400 is provided with multiple stop grooves 301. The multiple stop grooves 301 are arranged along the extension direction of the stop member 300. One of the stop member 300 and the elastic positioning member 400 is connected to the lamp housing 200 and the other is connected to the rotating member 100. The elastic positioning member 400 is configured to engage with any stop groove 301 and can elastically contract in the direction away from the stop member 300 when it is disengaged from the corresponding stop groove 301.

[0035] The aforementioned zoom positioning structure 10 arranges the threaded area 201 on the lamp housing 200 in a spiral configuration around the rotation axis of the rotating member 100. The rotating member 100 is partially engaged with and slidably connected to the threaded area 201, ensuring accurate and stable movement of the rotating member 100 relative to the lamp housing 200 under the engagement and limiting effect of the threaded area 201. This facilitates accurate zoom adjustment of the zoom positioning structure 10 when one of the rotating member 100 and the lamp housing 200 is used to connect to the light source and the other to the optical component. Furthermore, the stop member 300 and the elastic positioning member 400 are both positioned to avoid misalignment with the threaded area 201, thus ensuring the accuracy of the zoom adjustment. The 00 and the elastic positioning element 400 are disposed outside the threaded area 201, and the multiple stop grooves 301 are arranged along the extension direction of the stop element 300. The elastic positioning element 400 is configured to engage with any stop groove 301 and elastically contract away from the stop element 300 when disengaging from the corresponding stop groove 301. This ensures that the elastic positioning element 400 engages with the stop groove 301 to achieve rotation limit of the rotating element 100, which better ensures the stability of focus adjustment, reduces the wear of the elastic positioning element 400 and the stop element 300, improves the service life of the zoom positioning structure 10, and also improves the focusing smoothness of the zoom positioning structure 10.

[0036] Please refer to the following: Figures 1 to 3In one embodiment, the elastic positioning member 400 is a spring pin, which is connected to the lamp housing 200 or the rotating member 100. The free end of the spring pin is positioned towards the stop member 300 and engaged in any stop groove 301. Further, when the spring pin disengages from the corresponding stop groove 301, the stop member 300 compresses the free end of the spring pin, causing it to move away from the stop member 300. Furthermore, the elastic positioning component is not limited to a spring pin, but can also be a spring, sheet, rubber elastomer, polyurethane elastomer, or styrene elastomer, or other structure with elastic expansion and contraction capabilities and rigid strength. The elastic positioning component is connected to the lamp housing or rotating component, and the free end of the elastic positioning component is positioned facing the stop component and is engaged with any stop groove. When the elastic positioning component disengages from the corresponding stop groove, the stop component squeezes the free end of the elastic positioning component to move away from the stop component. This effectively ensures that the elastic positioning component can elastically contract when the stop component squeezes the elastic positioning component, and effectively and stably elastically elongate when sliding back into another stop groove. This effectively ensures the smoothness and stability of the zoom positioning structure.

[0037] In one embodiment, the elastic positioning member is in a fully extended state when it is engaged with the stop groove, that is, the elastic positioning member does not undergo elastic contraction when it is engaged with the stop groove, which effectively reduces the elastic fatigue of the elastic positioning member and improves the stability of the elastic positioning member being engaged with the stop groove.

[0038] Please refer to the following: Figures 2 to 4 In one embodiment, the rotating member 100 includes a rotating portion 110 and a sliding portion 120. The rotating portion 110 is rotatably connected to the lamp housing 200 and at least partially exposed therefrom. A threaded region 201 is spirally arranged around the rotation axis of the rotating portion 110. The sliding portion 120 is slidably connected to the threaded region 201, and the sliding portion 120 partially protrudes from the threaded region 201 and is connected to the rotating portion 110. Furthermore, one of the stop member 300 and the elastic positioning member 400 is connected to the lamp housing 200 and the other is connected to the rotating portion 110, so that the rotating portion 110 serves as the rotating body and is exposed to the lamp housing 200, which facilitates the user to apply force to drive the rotating portion 110 to rotate, thereby improving the focusing convenience of the zoom positioning structure 10.

[0039] Please refer to the following: Figure 2 , Figure 4 and Figure 5In one embodiment, the lamp housing 200 is provided with a rotating area 202, which is circumferentially arranged around the rotation axis of the rotating part 110. The rotating part 110 is partially located at the rotating area 202 and slidably connected to the rotating area 202. Further, the rotating part 110 is provided with a sliding area 101, the extension direction of which is parallel to the rotation axis of the rotating part 110. A sliding part 120 protrudes from the threaded area 201 and engages with the sliding area 101, and is slidably connected to the sliding area 101. Further, the stop member 300 is circumferentially arranged around the rotation axis of the rotating member 100. Further, one of the sliding part and the lamp housing is connected to the optical component and the other to the light source component, allowing the rotating part to be positioned and rotated on the lamp housing, thus enabling the sliding part to move towards or away from the lamp housing. This avoids the need for the rotating part to move further away from the lamp housing after being exposed, which would affect the aesthetics of the zoom positioning structure. Furthermore, the rotating area is a rotating hole, a rotating groove, or a rotating slide rail. Furthermore, the sliding area is a slide groove, a slide hole, or a slide rail, ensuring the rotational stability of the rotating part and the rotating area, and also effectively ensuring the sliding stability of the sliding part and the sliding area.

[0040] In one embodiment, the stop is spirally arranged around the rotation axis of the rotating component. Furthermore, the spiral arrangement of the stop around the rotation axis of the rotating component simplifies the structure of the rotating component and facilitates a simplified structure for the zoom positioning structure.

[0041] In one embodiment, the threaded area is a threaded groove, a threaded hole, or a threaded slide rail, which better ensures the sliding stability of the rotating part on the threaded area.

[0042] This application also provides a lamp. One embodiment of the lamp includes an optical element, a light source element, and a zoom positioning structure according to any of the above embodiments. One of the optical element and the light source element is connected to a rotating member, and the other is connected to the lamp housing. The light source element emits light, and at least part of the light enters the optical element and exits through it. Further details are also available in the following sections. Figures 1 to 3In this embodiment, the zoom positioning structure 10 includes a rotating member 100, a lamp housing 200, a stop member 300, and an elastic positioning member 400. The rotating member 100 is rotatably connected to the lamp housing 200. The lamp housing 200 is provided with a threaded area 201, which is spirally arranged around the rotation axis of the rotating member 100. The rotating member 100 is partially engaged with and slidably connected to the threaded area 201. Both the stop member 300 and the elastic positioning member 400 are disposed away from the threaded area 201 and are positioned opposite each other between the lamp housing 200 and the rotating member 100. The stop member 300 extends circumferentially along the rotation axis of the rotating member 100. The side of the stop member 300 near the elastic positioning member 400 is provided with multiple stop grooves 301. The multiple stop grooves 301 are arranged along the extension direction of the stop member 300. One of the stop member 300 and the elastic positioning member 400 is connected to the lamp housing 200 and the other is connected to the rotating member 100. The elastic positioning member 400 is configured to engage with any stop groove 301 and can elastically contract in the direction away from the stop member 300 when it is disengaged from the corresponding stop groove 301.

[0043] The aforementioned lamps employ a zoom positioning structure, which effectively ensures the accuracy of zoom adjustment and the stability of focus adjustment, while also improving the lifespan and smoothness of focusing.

[0044] In one embodiment, one of the optical element and the light source element is tactilely connected or fixed to the rotating member, and the other is tactilely connected or fixed to the lamp housing. Further, the optical element or the light source element is tactilely connected to the sliding portion. Further, the optical element or the light source element is tactilely connected to the fixing member, and the fixing member is connected to the sliding portion.

[0045] Compared with the prior art, the present invention has at least the following advantages:

[0046] The zoom positioning structure 10 of this utility model allows the threaded area 201 on the lamp housing 200 to spirally surround the rotation axis of the rotating member 100. The rotating member 100 is partially engaged with and slidably connected to the threaded area 201, ensuring accurate and stable movement of the rotating member 100 relative to the lamp housing 200 under the engagement and limiting effect of the threaded area 201. This facilitates accurate zoom adjustment of the zoom positioning structure 10 when one of the rotating member 100 and the lamp housing 200 is used to connect to the light source and the other to the optical component. Furthermore, the stop member 300 and the elastic positioning member 400 are both positioned to avoid misalignment with the threaded area 201, thus ensuring the accuracy of the zoom adjustment. The stop grooves 300 and the elastic positioning element 400 are disposed outside the threaded area 201, and the multiple stop grooves 301 are arranged along the extension direction of the stop element 300. The elastic positioning element 400 is configured to engage with any stop groove 301 and elastically contract away from the stop element 300 when disengaging from the corresponding stop groove 301. This ensures that the elastic positioning element 400 engages with the stop groove 301 to achieve rotation limit of the rotating element 100, which better ensures the stability of focus adjustment, reduces the wear of the elastic positioning element 400 and the stop element 300, improves the service life of the zoom positioning structure 10, and also improves the focusing smoothness of the zoom positioning structure 10.

[0047] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A zoom positioning structure, comprising a rotating component and a lamp housing, wherein the rotating component is rotatably connected to the lamp housing, the lamp housing has a threaded area, the threaded area being spirally arranged around the rotation axis of the rotating component, and the rotating component being partially engaged with and slidably connected to the threaded area, characterized in that, The zoom positioning structure further includes a stop and an elastic positioning member. The stop and the elastic positioning member are both disposed away from the threaded area and are positioned opposite each other between the lamp housing and the rotating member. The stop extends circumferentially along the rotation axis of the rotating member. The stop has multiple stop grooves on the side of the stop near the elastic positioning member. The multiple stop grooves are arranged along the extension direction of the stop. One of the stop and the elastic positioning member is connected to the lamp housing and the other is connected to the rotating member. The elastic positioning member is configured to engage with any of the stop grooves and elastically contract away from the stop when disengaging from the corresponding stop groove.

2. The zoom positioning structure according to claim 1, characterized in that, The elastic positioning element is a spring pin, which is connected to the lamp housing or the rotating element. The free end of the spring pin is positioned towards the stop element and is engaged with any of the stop grooves. When the spring pin disengages from the corresponding stop groove, the stop member presses the free end of the spring pin to move away from the stop member.

3. The zoom positioning structure according to claim 1, characterized in that, The elastic positioning member is in a fully extended state when it is engaged with the stop groove.

4. The zoom positioning structure according to claim 1, characterized in that, The rotating component includes a rotating part and a sliding part. The rotating part is rotatably connected to the lamp housing and is at least partially exposed to the lamp housing. The threaded area is spirally arranged around the rotation axis of the rotating part. The sliding part is slidably connected to the threaded area, and the sliding part partially protrudes from the threaded area and is connected to the rotating part. One of the stop member and the elastic positioning member is connected to the lamp housing and the other is connected to the rotating part.

5. The zoom positioning structure according to claim 4, characterized in that, The lamp housing is provided with a rotating area, which is circumferentially arranged around the rotation axis of the rotating part, and the rotating part is partially disposed in the rotating area and slidably connected to the rotating area. The rotating part is provided with a sliding area, the extension direction of the sliding area is parallel to the rotation axis of the rotating part, the sliding part protrudes from the threaded area and is engaged with the sliding area, and the sliding part is slidably connected to the sliding area; The stop member is circumferentially arranged around the rotation axis of the rotating member.

6. The zoom positioning structure according to claim 5, characterized in that, The sliding area is a groove, a hole, or a rail; and / or, The rotating area is a rotating hole, a rotating groove, or a rotating slide rail.

7. The zoom positioning structure according to claim 1, characterized in that, The stop member is spirally arranged around the rotation axis of the rotating member.

8. The zoom positioning structure according to claim 1, characterized in that, The threaded area is a threaded groove, a threaded hole, or a threaded slide rail.

9. A lamp, characterized in that, The device includes an optical component, a light source component, and a zoom positioning structure as described in any one of claims 1 to 8, wherein one of the optical component and the light source component is connected to the rotating component and the other is connected to the lamp housing, the light source component emits light, and the light at least partially enters the optical component and exits through the optical component.

10. The lamp according to claim 9, characterized in that, One of the optical component and the light source component is tumbled or fixed to the rotating component, and the other is tumbled or fixed to the lamp housing.

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