Focusing lens barrel mechanism and lamp

Abstract

The utility model discloses a focusing lens barrel mechanism and a lamp. The focusing lens barrel mechanism comprises a mechanism body, a fixed barrel, a rotating barrel, a lens assembly and a guide piece. The mechanism body is used for being connected with a lamp body, one end of the fixing cylinder is connected with the mechanism body, and a spiral groove spirally extending in the axial direction is formed in the fixing cylinder. The lens assembly is assembled in the fixing cylinder, the edge of the lens assembly is provided with a guide piece extending in the radial direction, and the guide piece penetrates through the spiral groove in a clearance mode. The rotating cylinder is connected to the fixed cylinder in a sleeving mode and can rotate, the rotating cylinder covers the spiral groove, the inner surface of the rotating cylinder is provided with a guide groove extending in the axial direction, and the guide piece is in clearance fit with the guide groove. When a user rotates the rotating cylinder, the guide groove drives the guide piece and the lens assembly to rotate integrally, so that the guide piece rotates and moves back and forth along the spiral groove, the lens assembly is further driven to move back and forth to realize focusing, the focusing operation is convenient, and the user can control the focusing precision conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting lamps, in particular to a focusing lens barrel mechanism and a lamp. Background Art

[0002] In the prior art, a Chinese utility model patent with announcement number CN209839990U discloses an imaging lamp angle switching module, wherein a focusing device is provided inside the lamp tube, and the focusing device includes a sliding column. Two evenly distributed sliding columns are provided on the inner wall of the lamp tube through a connecting piece, and the sliding columns are slidably connected to the sliding sleeve on the outer arc surface of the fixing frame, and a lens is installed inside the fixing frame. Two evenly distributed strip openings are provided on the arc surface of the lamp tube, and two symmetrically distributed sliding adjustment threaded columns are provided on the arc surface of the fixing frame. The sliding adjustment threaded columns pass through the strip openings and are threadedly connected with a locking nut at the top, and the bottom surface of the locking nut is in contact with the outer side surface of the lamp tube. Loosen the locking nut, and the user holds the threaded column and slides along the strip opening to adjust the position of the lens to achieve focusing. After focusing is in place, tighten the locking nut.

[0003] The above adjustment scheme of the prior art requires loosening and tightening the nut during operation, resulting in unchanged focus. After loosening the nut, the threaded column slides linearly along the strip outlet, with a large forward and backward movement range and no restrictions, making it difficult to control the adjustment accuracy.

[0004] In view of this, it is necessary to provide a focusing lens barrel mechanism and a lamp that are convenient for users to focus and help improve the adjustment accuracy. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a focusing lens barrel mechanism and a lamp which are convenient for users to focus and are conducive to improving the adjustment accuracy.

[0006] The technical scheme of the utility model provides a focusing lens barrel mechanism, comprising a mechanism body, a fixed barrel connected to the mechanism body, a rotating barrel pivotally mounted on the fixed barrel, and a lens assembly mounted in the fixed barrel and capable of reciprocatingly sliding along the axial direction of the fixed barrel;

[0007] The fixed cylinder is provided with a spiral groove extending along the axial direction, the edge of the lens assembly is provided with a guide extending along the radial direction of the fixed cylinder, and the inner surface of the rotating cylinder is provided with a guide groove extending along the axial direction.

[0008] The guide member passes through the spiral groove and is loosely matched with the guide groove.

[0009] In one of the optional technical solutions, the focusing lens barrel mechanism includes a plurality of the rotating barrels and the lens assemblies, the edge of each lens assembly is provided with the guide member, and correspondingly, the fixed barrel is provided with a plurality of spiral grooves spaced apart along the axial direction;

[0010] Each of the rotating cylinders can be pivotally sleeved on the outer side of a section of the spiral groove, and the guide member of each lens assembly passes through a section of the spiral groove and is gap-matched with the guide groove in one of the rotating cylinders.

[0011] In one of the optional technical solutions, a retaining ring is provided between two adjacent sections of the spiral groove.

[0012] In one of the optional technical solutions, a plurality of the guide members are provided at intervals on the edge of the lens assembly, and correspondingly, a plurality of the guide grooves are provided at intervals on the inner surface of the rotating cylinder.

[0013] In one of the optional technical solutions, the lens assembly includes a lens holder and a lens installed in the lens holder, and the guide member is detachably connected to the lens holder.

[0014] In one of the optional technical solutions, the mechanism body includes an assembly ring and a main body sleeve for inserting into the lamp body, the fixing tube and the main body sleeve are connected to opposite sides of the assembly ring, and an optical lens is provided in the main body sleeve.

[0015] In one of the optional technical solutions, the mechanism body includes a connecting ring for threaded connection with the lamp body, and the connecting ring is pivotally sleeved on the main body sleeve;

[0016] A connecting ring protrusion is provided on one side of the connecting ring facing the assembling ring, and an assembling ring protrusion for stopping the connecting ring protrusion is provided on one side of the assembling ring facing the connecting ring.

[0017] In one of the optional technical solutions, a mounting ring groove for accommodating the connecting ring protrusion is provided on the side of the mounting ring facing the connecting ring, the mounting ring protrusion is provided in the mounting ring groove, and the connecting ring protrusion is loosely fitted in the mounting ring groove.

[0018] In one of the optional technical solutions, the mechanism body is provided with a dimming paddle or a film holder.

[0019] A lamp in the technical solution of the utility model comprises a lamp body with a light source and a focusing lens barrel mechanism as described in any of the above technical solutions.

[0020] The above technical solution has the following beneficial effects:

[0021] The utility model provides a focusing lens barrel mechanism and a lamp, comprising a mechanism body, a fixed barrel, a rotating barrel, a lens assembly and a guide. The mechanism body is used to connect with a lamp body, one end of the fixed barrel is connected with the mechanism body, and the fixed barrel is provided with a spiral groove extending along the axial spiral. The lens assembly is assembled in the fixed barrel, and the edge of the lens assembly has a radially extending guide, and the guide gap passes through the spiral groove. The rotating barrel is sleeved on the fixed barrel and can rotate, and the rotating barrel covers the spiral groove, and the inner surface of the rotating barrel is provided with a guide groove extending along the axial direction, and the guide is gap-matched with the guide groove.

[0022] When adjusting the focus, the user rotates the rotating cylinder, and the guide groove drives the guide member and the lens assembly to rotate as a whole, while the fixed cylinder does not rotate, so the guide member rotates and moves forward and backward along the spiral groove, thereby driving the lens assembly to move forward and backward to achieve focusing, and the focusing operation is convenient. When the user rotates the rotating cylinder, the guide member moves slowly forward and backward along the spiral groove. After the user stops rotating the rotating cylinder, the guide member is limited by the spiral groove and will not move forward and backward, which is convenient for the user to control the focusing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0024] Figure 1 A three-dimensional diagram of a focusing lens barrel mechanism provided by an embodiment of the utility model at a certain viewing angle;

[0025] Figure 2 A three-dimensional diagram of a focusing lens barrel mechanism provided by an embodiment of the utility model at another viewing angle;

[0026] Figure 3 An exploded view of a focusing lens barrel mechanism provided in one embodiment of the utility model;

[0027] Figure 4 is a three-dimensional diagram of a fixed cylinder;

[0028] Figure 5 is a three-dimensional diagram of a rotating drum;

[0029] Figure 6 is a cross-sectional view of the rotating cylinder along the radial direction;

[0030] Figure 7 is a stereogram of a lens assembly;

[0031] Figure 8 It is an exploded view of the assembly ring and the connecting ring;

[0032] Fig. 9 is a stereogram of the assembly ring;

[0033] Fig.10A three-dimensional diagram of a focusing lens barrel mechanism provided in another embodiment of the utility model;

[0034] Fig.11 is a stereogram of a film holder;

[0035] Fig.12 A three-dimensional diagram of a lamp provided in one embodiment of the utility model;

[0036] Fig.13 for Fig.12 An exploded view of the light fixture shown;

[0037] Fig.14 It is a cross-sectional view of the connection between the mechanism body and the lamp body;

[0038] Fig.15 A three-dimensional diagram of a lamp provided in another embodiment of the utility model. DETAILED DESCRIPTION

[0039] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. The same parts are represented by the same figure numbers. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0040] like Figure 1-7 As shown, a focusing lens barrel mechanism 100 provided by an embodiment of the utility model includes a mechanism body 1, a fixed barrel 2 connected to the mechanism body 1, a rotating barrel 3 pivotally mounted on the fixed barrel 2, and a lens assembly 4 installed in the fixed barrel 2 and capable of reciprocatingly sliding along the axial direction of the fixed barrel 2.

[0041] The fixed cylinder 2 is provided with a spiral groove 21 extending along the axial spiral, the edge of the lens assembly 4 is provided with a guide member 5 extending along the radial direction of the fixed cylinder 2, and the inner surface of the rotating cylinder 3 is provided with a guide groove 31 extending along the axial direction.

[0042] The guide member 5 passes through the spiral groove 21 and is clearance-matched with the guide groove 31 .

[0043] The focusing lens barrel mechanism 100 provided by the utility model is used to be installed on a lamp and used as a lamp head. The focusing lens barrel mechanism 100 comprises a mechanism body 1, a fixed barrel 2, a rotating barrel 3, a lens assembly 4 and a guide 5.

[0044] Institutional entity 1 is used to Figure 12-15 The lamp body 200 of the lamp is connected. The lamp body 200 has a light source 201, and its light can be transmitted through the focusing lens barrel mechanism 100.

[0045] One end of the fixed cylinder 2 is connected to the mechanism body 1 . The fixed cylinder 2 is provided with a spiral groove 21 . The spiral groove 21 extends spirally along the axial direction of the fixed cylinder 2 .

[0046] The rotating cylinder 3 is sleeved on the fixed cylinder 2 and can rotate. The rotating cylinder 3 covers the spiral groove 21. The inner surface of the rotating cylinder 3 is provided with a guide groove 31 extending along the axial direction. The outer surface of the rotating cylinder 3 can be configured with a rough surface so that the user can hold and rotate the rotating cylinder 3. The fixed cylinder 2 is provided with a limiting structure at both ends of the spiral groove 21 to limit the axial movement of the rotating cylinder 3. The limiting structure can be a limiting ring, a limiting pin, etc.

[0047] The lens assembly 4 is assembled in the fixed barrel 2 and can move along the axial direction of the fixed barrel 2 to adjust the distance between it and the light source 201, thereby achieving focusing.

[0048] The guide member 5 is connected to the edge of the lens assembly 4 and extends along the radial direction of the fixed cylinder 2. The guide member 5 passes through the spiral groove 21. The end of the guide member 5 is inserted into the guide groove 31, and the guide member 5 is loosely matched with the spiral groove 21 and the guide groove 31.

[0049] The guide member 5 can be a guide column, a guide pin or other structures.

[0050] During assembly, first assemble the lens assembly 4 into the fixed cylinder 2, then pass the guide member 5 through the spiral groove 21, and connect the guide member 5 to the lens assembly 4, and finally put the rotating cylinder 3 on the fixed cylinder 2, align the guide member 5 with the guide groove 31, and slide the guide member 5 into the guide groove 31.

[0051] When adjusting the focus, the user rotates the rotating cylinder 3, and the guide groove 31 drives the guide member 5 and the lens assembly 4 to rotate as a whole, while the fixed cylinder 2 does not rotate, so the guide member 5 rotates and moves forward and backward along the spiral groove 21, thereby driving the lens assembly 4 to move forward and backward to achieve focusing, and the focusing operation is convenient. When the user rotates the rotating cylinder 3, the guide member 5 moves slowly forward and backward along the spiral groove 21. After the user stops rotating the rotating cylinder 3, the guide member 5 is limited by the spiral groove 21 and will not move forward and backward, which is convenient for the user to control the focusing accuracy.

[0052] In one embodiment, if Figure 1-4 As shown, the focusing lens barrel mechanism 100 includes a plurality of rotating barrels 3 and lens assemblies 4. A guide 5 is provided on the edge of each lens assembly 4. Accordingly, a plurality of spiral grooves 21 are provided on the fixed barrel 2 at intervals along the axial direction.

[0053] Each rotating cylinder 3 is pivotally sleeved on the outer side of a spiral groove 21 . The guide member 5 of each lens assembly 4 passes through a spiral groove 21 and is loosely matched with a guide groove 31 in a rotating cylinder 3 .

[0054] The plurality of rotating cylinders 3 are respectively used for focusing corresponding to the plurality of lens assemblies 4 to meet different focusing requirements of users.

[0055] In one embodiment, if Figure 1-4 As shown, a retaining ring 22 is provided between two adjacent sections of the spiral groove 21 to limit the axial movement of the rotating cylinder 3 and avoid contact and interference between the two adjacent rotating cylinders 3 .

[0056] In one embodiment, if Figure 6-7 As shown, a plurality of guide members 5 are provided at intervals on the edge of the lens assembly 4, and correspondingly, a plurality of guide grooves 31 are provided at intervals on the inner surface of the rotating cylinder 3, so as to improve the stability of driving the lens assembly 4 to rotate and move.

[0057] Preferably, three guide members 5 are evenly distributed on the circumferential edge of the lens assembly 4 , and three guide grooves 31 are evenly distributed on the inner surface of the rotating cylinder 3 .

[0058] In one embodiment, if Figure 2-3 and Figure 7 As shown, the lens assembly 4 includes a lens holder 41 and a lens 42 installed in the lens holder 41 , and the guide member 5 is detachably connected to the lens holder 41 .

[0059] In this embodiment, the lens assembly 4 is composed of a lens holder 41 and a lens 42. The lens holder 41 is a sleeve structure. The lens 42 is installed in the lens holder 41. The guide member 5 is detachably connected to the lens holder 41. The lens holder 41 provides a mounting point for the guide member 5. After the lens assembly 4 is installed in the fixed barrel 2, the guide member 5 is passed through the spiral groove 21 and connected to the lens holder 41 to complete the assembly of the guide member 5. The guide member 5 can be threaded or clamped to the lens holder 41.

[0060] In one embodiment, if Figure 1-2 and Fig.14 As shown, the mechanism body 1 includes an assembly ring 11 and a main body sleeve 12 for inserting into the lamp body 200 , the fixing tube 2 and the main body sleeve 12 are connected to opposite sides of the assembly ring 11 , and an optical lens 13 is arranged in the main body sleeve 12 .

[0061] In this embodiment, the mechanism body 1 includes an assembly ring 11 and a main body sleeve 12. The main body sleeve 12 and the fixing tube 2 are connected to opposite sides of the assembly ring 11 and are coaxially arranged. The assembly ring 11 is used to assemble with the opening of the lamp body 200, and the main body sleeve 12 is used to be inserted into the lamp body 200 and extend toward the light source 201. An optical lens 13 is provided in the main body sleeve 12 to play a dimming role. For example, if the optical lens 13 is a convex lens, it plays a focusing role. As needed, multiple optical lenses 13 can be provided in the main body sleeve 12.

[0062] In one embodiment, if Figure 2 and Figure 8-9 and Fig.14 As shown, the mechanism body 1 includes a connecting ring 14 for threaded connection with the lamp body 200 , and the connecting ring 14 is pivotally sleeved on the main body sleeve 12 .

[0063] A connecting ring protrusion 141 is provided on one side of the connecting ring 14 facing the mounting ring 11 , and a mounting ring protrusion 112 for stopping the connecting ring protrusion 141 is provided on one side of the mounting ring 11 facing the connecting ring 14 .

[0064] In this embodiment, the mechanism body 1 includes a connecting ring 14, the outer peripheral surface of the connecting ring 14 is provided with an external thread, and the barrel of the lamp body 200 is provided with an internal thread. The connecting ring 14 is used to be threadedly connected with the lamp body 200. The connecting ring 14 is sleeved on the main body sleeve 12 and can rotate on the main body sleeve 12. The connecting ring 14 is axially limited on the main body sleeve 12. Specifically, a limiting ring 17 is provided on the main body sleeve 12, and the connecting ring 14 is assembled between the assembly ring 11 and the limiting ring 17.

[0065] A connecting ring protrusion 141 is provided on one side of the connecting ring 14 facing the assembly ring 11 , and an assembly ring protrusion 112 is provided on one side of the assembly ring 11 facing the connecting ring 14 . The assembly ring protrusion 112 is used to stop the connecting ring protrusion 141 .

[0066] When the focusing lens barrel mechanism 100 needs to be assembled with the lamp body 200, the main sleeve 12 is inserted into the barrel of the lamp body 200, and the connecting ring 14 enters the barrel mouth of the lamp body 200. The assembly ring 11 is rotated forward until the assembly ring protrusion 112 blocks the connecting ring protrusion 141, and then the assembly ring 11 is continued to be rotated forward, and the connecting ring protrusion 141 is driven by the assembly ring protrusion 112, and the connecting ring 14 is driven to rotate forward, and then the connecting ring 14 is tightened in the barrel mouth of the lamp body 200 to complete the assembly. Afterwards, the user can drive the assembly ring 11 to rotate in the reverse direction for adjustment, and the range of reverse rotation is any range before the assembly ring protrusion 112 moves in the reverse direction to stop the connecting ring protrusion 141. When the assembly ring 11 is rotated in the reverse direction, the main sleeve 12, the front fixed barrel 2, the rotating barrel 3, the lens assembly 4 and the guide 5 are rotated in the reverse direction for adjustment together. Of course, before the assembly ring protrusion 112 rotates forward to block the connecting ring protrusion 141 and before the assembly ring protrusion 112 moves backward to stop the connecting ring protrusion 141, the assembly ring 11 can be rotated and adjusted in any forward and reverse directions.

[0067] When the user needs to disassemble and replace the focusing lens barrel mechanism 100, the user rotates the assembly ring 11 in the reverse direction until the assembly ring protrusion 112 blocks the connecting ring protrusion 141, and then continues to rotate the assembly ring 11 in the reverse direction. The connecting ring protrusion 141 is driven by the assembly ring protrusion 112, and the connecting ring 14 is driven to rotate in the reverse direction, and then the connecting ring 14 is removed from the barrel mouth of the lamp body 200, completing the disassembly of the focusing lens barrel mechanism 100.

[0068] In one embodiment, if Fig. 9 As shown, a mounting ring groove 113 for accommodating a connecting ring protrusion 141 is provided on one side of the mounting ring 11 facing the connecting ring 14 , the mounting ring protrusion 112 is provided in the mounting ring groove 113 , and the connecting ring protrusion 141 is loosely fitted in the mounting ring groove 113 .

[0069] In this embodiment, a circle of assembly ring grooves 113 is provided on the rear side of the assembly ring 11, and the assembly ring protrusions 112 are provided in the assembly ring grooves 113. The assembly ring grooves 113 are used to accommodate the connecting ring protrusions 141. The inner ring surface of the assembly ring 11 is provided with an assembly ring sleeve 111 extending backwards, the connecting ring 14 is sleeved on the assembly ring sleeve 111, and the limiting ring 17 is provided on the assembly ring sleeve 111. The connecting ring protrusions 141 are loosely fitted in the assembly ring grooves 113 to reduce the gap between the assembly ring 11 and the connecting ring 14. The assembly ring grooves 113 and the connecting ring protrusions 141 play a role of radial limiting.

[0070] In one embodiment, if Figure 1-2 and Figure 10-11 As shown, the mechanism body 1 is provided with a dimming paddle 15 or a film holder 16 to meet the needs of different users.

[0071] Specifically, a plurality of slots are provided on the mounting ring 11 for inserting the dimming paddle 15 or the film holder 16. The user can adjust the light output area by swinging the dimming paddle 15. The user can install a film with a LOGO or pattern on the film holder 16 to project the light with the LOGO or pattern.

[0072] like Figure 12-15 As shown, a lamp provided by an embodiment of the present invention includes a lamp body 200 having a light source 201 and the focusing lens barrel mechanism 100 described in any of the above embodiments.

[0073] The light source 201 may be an LED light source, and a hanging arm 300 may be provided at the rear end of the lamp body 200 for hanging at a designated position.

[0074] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0075] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be considered as the protection scope of the present invention.

Claims

1. A focusing lens barrel mechanism, characterized in that: It comprises a mechanism body, a fixed cylinder connected to the mechanism body, a rotating cylinder pivotally mounted on the fixed cylinder, and a lens assembly mounted in the fixed cylinder and capable of reciprocatingly sliding along the axial direction of the fixed cylinder; The fixed cylinder is provided with a spiral groove extending along the axial direction, the edge of the lens assembly is provided with a guide extending along the radial direction of the fixed cylinder, and the inner surface of the rotating cylinder is provided with a guide groove extending along the axial direction. The guide member passes through the spiral groove and is loosely matched with the guide groove.

2. The focusing lens barrel mechanism according to claim 1, characterized in that: The focusing lens barrel mechanism comprises a plurality of rotating barrels and lens assemblies, the edge of each lens assembly is provided with the guide member, and correspondingly, a plurality of spiral grooves are provided on the fixed barrel at intervals along the axial direction; Each of the rotating cylinders can be pivotally sleeved on the outer side of a section of the spiral groove, and the guide member of each lens assembly passes through a section of the spiral groove and is gap-matched with the guide groove in one of the rotating cylinders.

3. The focusing lens barrel mechanism according to claim 2, characterized in that: A retaining ring is arranged between two adjacent sections of the spiral groove.

4. The focusing lens barrel mechanism according to claim 1, characterized in that: A plurality of guide members are provided at intervals on the edge of the lens assembly, and correspondingly, a plurality of guide grooves are provided at intervals on the inner surface of the rotating cylinder.

5. The focusing lens barrel mechanism according to claim 1, characterized in that: The lens assembly comprises a lens support and a lens installed in the lens support, and the guide member is detachably connected to the lens support.

6. The focusing lens barrel mechanism according to any one of claims 1 to 5, characterized in that: The mechanism body comprises an assembly ring and a main body sleeve for inserting into the lamp body, the fixing tube and the main body sleeve are connected to opposite sides of the assembly ring, and an optical lens is arranged in the main body sleeve.

7. The focusing lens barrel mechanism according to claim 6, characterized in that: The mechanism body comprises a connecting ring for threaded connection with the lamp body, and the connecting ring is pivotally sleeved on the main body sleeve; A connecting ring protrusion is provided on one side of the connecting ring facing the assembling ring, and an assembling ring protrusion for stopping the connecting ring protrusion is provided on one side of the assembling ring facing the connecting ring.

8. The focusing lens barrel mechanism according to claim 7, characterized in that: A mounting ring groove for accommodating the connecting ring protrusion is provided on one side of the mounting ring facing the connecting ring. The mounting ring protrusion is provided in the mounting ring groove, and the connecting ring protrusion is loosely fitted in the mounting ring groove.

9. The focusing lens barrel mechanism according to any one of claims 1 to 5, characterized in that: The mechanism body is provided with a dimming paddle or a film bracket.

10. A lamp, characterized in that: The invention comprises a lamp body having a light source and a focusing lens barrel mechanism as claimed in any one of claims 1 to 9.

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