Periscopic lens driving mechanism

Abstract

The invention discloses a periscopic lens driving mechanism, which comprises a base, a lens carrier, a cross shaft, a prism carrier, an extrusion piece and a pressure spring, and is characterized in that the lens carrier is movably connected with the base along a first direction. The cross shaft comprises a first shaft and a second shaft which are connected with each other, the axis of the first shaft extends in the second direction, and the two ends of the first shaft are connected with the base; the axis of the second shaft extends in the vertical direction, a mounting groove is formed in the rear side of the prism carrier, the cross shaft is located in the mounting groove, the extrusion part is connected with the prism carrier, the compression spring is elastic and connected with the extrusion machine, and the compression spring extrudes the second shaft towards the front side.

Description

Technical Field

[0001] This invention relates to the field of optical element driving technology, and in particular to a periscope lens driving mechanism. Background Technology

[0002] With the development of technology, many electronic devices today (such as smartphones or digital cameras) have the function of taking pictures or recording videos. The use of these electronic devices is becoming more and more common, and they are developing towards convenient and thinner designs to provide users with more choices.

[0003] Some electronic devices with photographic or video recording functions are equipped with a lens drive mechanism to drive the optical components of the lens to move, thereby achieving the function of autofocus.

[0004] In the periscope lens drive mechanism, the prism carrier nods or shakes via a cross axis, but the stability of the cross axis is insufficient and needs to be improved. Summary of the Invention

[0005] The purpose of this invention is to provide a periscope lens driving mechanism to solve the problems of the prior art.

[0006] To address the aforementioned technical problems, embodiments of the present invention provide a periscope lens driving mechanism, comprising: Base; A lens carrier, wherein the lens carrier is movably connected to the base along a first direction; A cross shaft, comprising a first shaft and a second shaft connected to each other, wherein the axis of the first shaft extends along a second direction and both ends of the first shaft are connected to the base; and the axis of the second shaft extends in a vertical direction. A prism carrier, wherein a mounting groove is provided on the rear side of the prism carrier, and the cross shaft is located in the mounting groove; An extrusion member, the extrusion member being connected to the prism carrier; and A compression spring, which is elastic and connected to the extruder, compresses the second shaft towards the front.

[0007] In one embodiment, the compression spring is a sheet-like structure extending along the second direction, with the middle portion compressing the second shaft.

[0008] In one embodiment, the two ends of the compression spring along the second direction are engaged with the extrusion member.

[0009] In one embodiment, the rear side of the prism carrier is provided with a clearance groove, which extends along the second direction; The compression spring is located within the clearance groove; The extrusion component includes: A first connecting portion is connected to the rear side of the carrier; Two second connecting parts, the outer ends of which are respectively connected to the first connecting part, and the inner ends of which are respectively connected to the compression spring.

[0010] In one embodiment, the rear side of the prism carrier is further provided with a connecting groove; The connecting groove is connected to the clearance groove; The first connecting part is connected to the inner wall of the connecting groove.

[0011] In one embodiment, the inner wall of the connecting groove is provided with a connecting post; The first connecting part is provided with a connecting hole for connecting to the connecting post.

[0012] In one embodiment, the first connecting portion is welded to the inner wall of the connecting groove.

[0013] In one embodiment, the inner wall of the mounting groove is provided with a protruding locking block; The first connecting part is provided with a slot that engages with the card block.

[0014] In one embodiment, the second connecting portion engages with the compression spring.

[0015] In one embodiment, the second connecting portion is welded to the compression spring.

[0016] In one embodiment, the periscope lens driving mechanism further includes a sensing magnet, which is located in the connecting groove and attracts the first connecting portion; The base is also equipped with a position sensor, which works in conjunction with the sensing magnet to sense the flipping state of the prism carrier.

[0017] In one embodiment, the base includes: A base plate that extends along the first direction; A rear end plate, which is connected to the bottom plate along the rear side of the first direction; The position sensor is located inside the rear panel.

[0018] In one embodiment, the top surface of the base plate is provided with two support frames; The two ends of the first shaft are respectively connected to the two support frames.

[0019] In one embodiment, the periscope lens drive mechanism further includes: A first magnet assembly, which is connected to one of the base or the prism carrier; A first coil group is connected to another of the base and the prism carrier, and cooperates with the first magnet group to drive the prism carrier to rotate around the first axis.

[0020] In one embodiment, the periscope lens drive mechanism further includes: The second magnet group is connected to one of the base or the prism carrier; The second coil group is connected to another of the base and the prism carrier, and cooperates with the second magnet group to drive the prism carrier to rotate around the second axis.

[0021] This invention increases the stability of the cross shaft by compressing it with a compression spring and a pressing element. Furthermore, the pressing element attracts the induction magnet, which in turn increases the stability of the induction magnet. Attached Figure Description

[0022] Figure 1 and Figure 2 This is an exploded view of a periscope lens driving mechanism according to an embodiment of the present invention.

[0023] Figure 3 yes Figure 1 Exploded view of the base, prism carrier, and lens carrier in the illustrated embodiment.

[0024] Figure 4 yes Figure 1 A perspective view of the base in the illustrated embodiment.

[0025] Figure 5 yes Figure 1 A perspective view of the prism carrier and lens carrier in the illustrated embodiment.

[0026] Figure 6 yes Figure 1 The assembly diagram of the prism carrier, the first group of magnets, the second group of magnets, and the induction magnet in the embodiment shown is illustrated.

[0027] Figure 7 yes Figure 1 Exploded view of the prism carrier, cross shaft, and induction magnet in the illustrated embodiment.

[0028] Figure 8 yes Figure 1 Exploded view of the prism carrier, compression spring, extrusion member, cross shaft, and induction magnet in the embodiment shown.

[0029] Figure 9 yes Figure 1 A perspective view of the prism carrier in the illustrated embodiment.

[0030] Figure 10 yes Figure 1Assembly diagram of the periscope lens drive mechanism in the illustrated embodiment.

[0031] Figure 11 yes Figure 10 A cross-sectional view of the periscope lens drive mechanism along line AA in the embodiment shown.

[0032] 100. Periscope lens drive mechanism; 1. Base; 11. Base plate; 111. Support frame; 112. V-groove; 12. Front end plate; 13. Rear end plate; 14. Side plate; 15. Position sensor; 16. First coil group; 17. Second coil group; 18. Control chip; 2. Lens carrier; 21. Ball bearing; 3. Prism carrier; 31. Mounting groove; 32. Clearance groove; 33. Connecting groove; 34. Connecting post; 35. Induction magnet; 36. First magnet group; 37. Second magnet group; 38. Locking block; 39. Prism; 4. Cross shaft; 41. First shaft; 42. Second shaft; 5. Extrusion part; 51. First connecting part; 52. Second connecting part; 53. Connecting hole; 54. Slot; 6. Compression spring; 61. Limiting protrusion; 7. Housing; 71. Light inlet hole; Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the various embodiments of this invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this invention to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0034] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0035] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative of the essential spirit of the technical solution of the present invention.

[0036] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0037] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0038] In the following description, in order to clearly demonstrate the structure and working method of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0039] The present invention relates to a periscope lens drive mechanism 100, which includes a base 1, a lens carrier 2, a prism carrier 3, a cross shaft 4, a pressing member 5, a compression spring 6, and a housing 7.

[0040] The base 1 includes a base plate 11, a front end plate 12, a rear end plate 13, and two side plates 14. The base plate 11 is a plate-shaped component extending along a first direction. The two side plates 14 are respectively connected to the two sides of the base plate 11 along a second direction. The front end plate 12 is connected to the front end of the base plate 11 along the first direction, and the rear end plate 13 is connected to the rear end of the base plate 11 along the first direction. The front end plate 12, the rear end plate 13, the two side plates 14, and the base plate 11 are connected to form a ring-shaped frame structure.

[0041] Both the lens carrier 2 and the prism carrier 3 are located within the annular frame of the base 1, with the lens carrier 2 positioned in front and the prism carrier 3 positioned behind it. The lens carrier 2 is used to mount the lens, and the optical axis of the lens also extends along the first direction. The front of the prism carrier 3 is recessed to mount the prism 39, which is aligned with the lens. Light enters the prism 39 from above, is refracted by the prism 39, and is then projected onto the lens from the front.

[0042] The lens carrier 2 can move along a first direction via multiple ball bearings 21 to adjust the focal length of the lens. The lens carrier 2 can be driven by a combination of magnets and coils, or other driving methods.

[0043] The prism carrier 3 is movably connected to the base 1 via a cross shaft 4. Specifically, the rear side of the prism carrier 3 is provided with a recessed mounting groove 31, which extends through the prism carrier 3 along the second direction. The bottom surface of the base plate 11 is provided with two protruding support frames 111, and the top surface of the two support frames 111 is provided with V-shaped grooves 112 respectively.

[0044] The cross shaft 4 includes a first shaft 41 and a second shaft 42 connected to each other. The first shaft 41 extends along a second direction, and the second shaft 42 is located behind the first shaft 41 and extends vertically. The axes of the first shaft 41 and the second shaft 42 are perpendicular. The cross shaft 4 is installed in the mounting groove 31, and the two ends of the first shaft 41 are respectively supported in the V-grooves 112 of the two support frames 111, so that the prism carrier 3 is suspended in the air.

[0045] The extrusion member 5 is connected to the rear side of the prism carrier 3, and the compression spring 6 is connected to the extrusion member 5. The compression spring 6 is located on the rear side of the second shaft 42 and presses against the second shaft 42. The compression spring 6 is elastic, which realizes the installation and positioning of the cross shaft 4, and at the same time improves the stability of the connection structure between the prism carrier 3 and the cross shaft 4.

[0046] The compression spring 6 is a sheet-like structure extending along the second direction, and the middle part compresses the second shaft 42.

[0047] Preferably, the extrusion member 5 includes an integrally formed first connecting part 51 and two second connecting parts 52. The first connecting part 51 is connected to the rear side of the prism 39 carrier 3, and the two second connecting parts 52 extend along the first direction and respectively engage with the two ends of the compression spring 6 along the second direction.

[0048] Specifically, the rear side of the prism carrier 3 is provided with a clearance groove 32 and a connecting groove 33, the clearance groove 32 extends along the first direction and communicates with the mounting groove 31.

[0049] The connecting groove 33 has a recessed shape on the rear side of the prism carrier 3 and communicates with the clearance groove 32 and the mounting groove 31. In terms of depth, the depth of the mounting groove 31 is greater than the depth of the clearance groove 32, and the depth of the clearance groove 32 is greater than the depth of the connecting groove 33. In terms of length along the second direction, the length of the mounting groove 31 is greater than the length of the clearance groove 32, and the length of the clearance groove 32 is approximately equal to the length of the connecting groove 33.

[0050] The compression spring 6 is located within the clearance groove 32, and the middle part of the compression spring 6 presses against the second shaft 42. The two second connecting parts 52 are also located within the clearance groove 32 and their inner ends along the first direction are engaged with the compression spring 6, while their outer ends are integrally formed with the two ends of the first connecting part 51 along the second direction.

[0051] In one embodiment, one of the compression spring 6 and the second connecting part 52 is provided with a slot, and the other is provided with a block.

[0052] Preferably, in Figure 8 As shown, the compression spring 6 has a limiting protrusion 61, and the second connecting part 52 has a limiting groove to accommodate the limiting protrusion 61, which facilitates the positioning and assembly of the compression spring 6 and the second connecting part 52. Furthermore, the two ends of the compression spring 6 are welded to the two second connecting parts 52 to increase the connection stability.

[0053] The two ends of the compression spring 6 are fixed by the two second connecting parts 52 of the compression member 5, and the middle part bends toward the rear due to the compression of the second shaft 42. That is to say, the compression spring 6 is compressed and bent to fix the second shaft 42.

[0054] The inner wall of the connecting groove 33 is provided with a plurality of protruding connecting posts 34, and the first connecting part 51 is provided with a plurality of connecting holes 53 that fit into the plurality of connecting posts 34. The first connecting part 51 is connected to the inner wall of the connecting groove 33. In addition, preferably, the first connecting part 51 is also welded to the inner wall of the connecting groove 33 to increase stability.

[0055] Furthermore, the top and bottom walls of the connecting groove 33 are respectively provided with protruding locking blocks 38, the two locking blocks 38 are aligned in the vertical direction, and the first connecting part 51 is provided with a locking groove 54 that engages with the two locking blocks 38.

[0056] A position sensor 15 is embedded in the rear end plate 13 of the base 1, and a sensing magnet 35 is installed on the prism carrier 3. The sensing magnet 35 is located in the clearance groove 32 and is attracted to the rear side of the first connecting part 51. The position sensor 15, in conjunction with the sensing magnet 35, can sense the flipping state of the prism carrier 3.

[0057] The bottom surface of the prism carrier 3 is also equipped with a first magnet group 36, while the base plate 11 is equipped with a first coil group 16. The first coil group 16 and the first magnet group 36 cooperate to drive the prism carrier 3 to rotate around the first axis 41, forming a nodding effect. Of course, the first coil group 16 can also be set on the prism carrier 3, and the first magnet group 36 can be set on the base plate 11.

[0058] The prism carrier 3 is also provided with a second magnet group 37 on one side along the first direction, and a second coil group 17 is provided on one of the side plates 14 of the base 1. The second coil group 17 and the second magnet group 37 cooperate to drive the prism carrier 3 to rotate around the second axis 42, forming a head-shaking effect. Of course, the second magnet group 37 can also be provided on the side plate 14, and the second coil group 17 can be provided on the prism carrier 3.

[0059] The outer casing 7 covers the side plates 14 and the front and rear end plates 13 and is fastened to the base plate 11. The outer casing 7 is provided with a light inlet hole 71, which is aligned with the top surface of the prism 39 to facilitate the entry of light. A control chip 18 is also installed on the base. The control chip 18 is connected to each coil group to control the operation of the coil group.

[0060] This invention increases the stability of the cross shaft by compressing it with a compression spring and a pressing element. Furthermore, the pressing element attracts the induction magnet, which in turn increases the stability of the induction magnet.

[0061] The preferred embodiments of the present invention have been described in detail above, but it should be understood that, if necessary, aspects of the embodiments can be modified to utilize aspects, features, and concepts from various patents, applications, and publications to provide other embodiments.

[0062] In light of the detailed description above, these and other changes can be made to the embodiments. Generally, the terminology used in the claims should not be considered limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents enjoyed by these claims.

[0063] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. A periscope lens driving mechanism, characterized in that, include: Base; A lens carrier, wherein the lens carrier is movably connected to the base along a first direction; A cross shaft, comprising a first shaft and a second shaft connected to each other, wherein the axis of the first shaft extends along a second direction and both ends of the first shaft are connected to the base; and the axis of the second shaft extends in a vertical direction. A prism carrier, wherein a mounting groove is provided on the rear side of the prism carrier, and the cross shaft is located in the mounting groove; An extrusion member, the extrusion member being connected to the prism carrier; and A compression spring, which is elastic and connected to the extruder, compresses the second shaft towards the front.

2. The periscope lens driving mechanism according to claim 1, characterized in that, The compression spring is a sheet-like structure extending along the second direction, with the middle portion compressing the second shaft.

3. The periscope lens driving mechanism according to claim 1, characterized in that, The two ends of the compression spring along the second direction are engaged with the extrusion member.

4. The periscope lens driving mechanism according to claim 1, characterized in that, The rear side of the prism carrier is provided with a clearance groove, which extends along the second direction; The compression spring is located within the clearance groove; The extrusion component includes: A first connecting portion is connected to the rear side of the carrier; Two second connecting parts, the outer ends of which are respectively connected to the first connecting part, and the inner ends of which are respectively connected to the compression spring.

5. The periscope lens driving mechanism according to claim 4, characterized in that, The rear side of the prism carrier is also provided with a connecting groove; The connecting groove is connected to the clearance groove; The first connecting part is connected to the inner wall of the connecting groove.

6. The periscope lens driving mechanism according to claim 5, characterized in that, The inner wall of the connecting groove is provided with a connecting column; The first connecting part is provided with a connecting hole for connecting to the connecting post.

7. The periscope lens driving mechanism according to claim 5, characterized in that, The first connecting part is welded to the inner wall of the connecting groove.

8. The periscope lens driving mechanism according to claim 7, characterized in that, The inner wall of the mounting groove is provided with protruding locking blocks; The first connecting part is provided with a slot that engages with the card block.

9. The periscope lens driving mechanism according to claim 4, characterized in that, The second connecting part engages with the compression spring.

10. The periscope lens driving mechanism according to claim 9, characterized in that, The second connecting part is welded to the compression spring.

11. The periscope lens driving mechanism according to claim 5, characterized in that, The periscope lens drive mechanism also includes a sensing magnet, which is located in the connecting groove and is attracted to the first connecting part; The base is also equipped with a position sensor, which works in conjunction with the sensing magnet to sense the flipping state of the prism carrier.

12. The periscope lens driving mechanism according to claim 11, characterized in that, The base includes: A base plate that extends along the first direction; A rear end plate, which is connected to the bottom plate along the rear side of the first direction; The position sensor is located inside the rear panel.

13. The periscope lens driving mechanism according to claim 12, characterized in that, The top surface of the base plate is provided with two support frames; The two ends of the first shaft are respectively connected to the two support frames.

14. The periscope lens driving mechanism according to claim 1, characterized in that, The periscope lens drive mechanism also includes: A first magnet assembly, which is connected to one of the base or the prism carrier; A first coil group is connected to another of the base and the prism carrier, and cooperates with the first magnet group to drive the prism carrier to rotate around the first axis.

15. The periscope lens driving mechanism according to claim 1, characterized in that, The periscope lens drive mechanism also includes: The second magnet group is connected to one of the base or the prism carrier; The second coil group is connected to another of the base and the prism carrier, and cooperates with the second magnet group to drive the prism carrier to rotate around the second axis.

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