base assembly

Abstract

The utility model discloses a base assembly, the base assembly includes bottom plate, support plate and first rolling piece, the top surface of bottom plate is equipped with at least two ball grooves, and the ball is installed in each ball groove. The support plate is located the top surface of bottom plate and the bottom surface of support plate abuts against the ball. The first rolling piece is located between the bottom plate and the support plate and can be rollably connected with the bottom plate and the support plate.

Description

Technical Field

[0001] This utility model relates to the field of optical element driving technology, and in particular to a base assembly. 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 capabilities include optical element driving structures to drive optical components such as lenses to move, thereby achieving autofocus and optical image stabilization. Light can pass through the aforementioned optical components to form an image on the photosensitive element.

[0004] In existing optical element driving structures, anti-shake functionality is typically achieved through frame movement. Multiple rolling elements are positioned relative to the frame and support frame, cooperating to roll in one direction, while multiple rolling elements are positioned between the support frame and base, cooperating to roll in the opposite direction. The simultaneous support of the support frame or frame by multiple rolling elements leads to uneven force distribution between the frame and support frame, and between the support frame and base, causing instability in frame movement. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide a base assembly to solve the problems of the prior art.

[0006] To address the aforementioned technical problems, embodiments of this utility model provide a base assembly, comprising:

[0007] The base plate has at least two ball grooves on its top surface, and each ball groove is fitted with a ball.

[0008] A support plate, the support plate being located on the top surface of the base plate and the bottom surface of the support plate abutting against the ball bearing;

[0009] A first rolling element is located between the base plate and the support plate and is rotatably connected to the base plate and the support plate.

[0010] In one embodiment, the top surface of the base plate is provided with a first bottom guide groove; the first bottom guide groove extends along a first direction;

[0011] The first rolling element is rotatably connected to the support plate and is located within the first bottom guide groove.

[0012] In one embodiment, the first rolling element is a ball or a roller.

[0013] In one embodiment, two first rolling elements are mounted on the bottom surface of the support plate. The two first rolling elements are arranged along a first direction and are both ball bearings.

[0014] In one embodiment, the bottom surface of the support plate is provided with ball bearing holes for mounting the first rolling element.

[0015] In one embodiment, the top surface of the base plate is provided with a first boss and at least two second bosses, the bottom surface of the first boss is provided with a first bottom guide groove, and the top surface of the second bosses is provided with the ball groove.

[0016] The support plate is located on the top surface of the first boss and the top surface of the support plate is flush with the top surface of the second boss.

[0017] In one embodiment, the base assembly further includes a second rolling element connected to the support plate.

[0018] In one embodiment, two second rolling elements are mounted on the top surface of the support plate. The two second rolling elements are arranged at intervals along a second direction and are both ball bearings. The second direction is perpendicular to the first direction.

[0019] In one embodiment, the bottom surface of the support plate is provided with a first top guide groove extending in a first direction;

[0020] The first rolling element is connected to the base and is located within the first top guide groove.

[0021] In one embodiment, the first rolling element is a ball or a roller.

[0022] In one embodiment, the top surface of the base plate is provided with a first bottom guide groove;

[0023] The first bottom guide groove and the first top guide groove cooperate to accommodate the first rolling element, which is a rolling shaft.

[0024] In one embodiment, the base assembly further includes a second rolling element that is rotatably connected to the top of the support plate.

[0025] In one embodiment, the top surface of the support plate is provided with a second bottom guide groove extending in a second direction;

[0026] The second rolling element is a roller and is rotatably mounted in the second bottom guide groove;

[0027] The second direction is perpendicular to the first direction. Attached Figure Description

[0028] Figure 1 and Figure 2This is an exploded view of the optical element driving mechanism of one embodiment of the present invention.

[0029] Figure 3 and Figure 4 yes Figure 1 Exploded view of the frame and carrier in the illustrated embodiment.

[0030] Figure 5 yes Figure 1 The illustrated embodiment is a perspective view of the second coil group, the frame-integrated metal frame, the abutment plate, the third induction plate, and the third electrode plate.

[0031] Figure 6 yes Figure 1 The illustrated embodiment is a perspective view of the first electrode sheet, the second electrode sheet, the abutment plate, the third sensing sheet, and the third electrode sheet.

[0032] Figure 7 yes Figure 1 A perspective view of the frame in the illustrated embodiment.

[0033] Figure 8 yes Figure 1 A perspective view of the base assembly in the illustrated embodiment.

[0034] Figure 9 yes Figure 1 An exploded view of the base assembly in the illustrated embodiment.

[0035] Figure 10 yes Figure 1 The illustrated embodiment shows a three-dimensional view of the built-in circuitry and the first adsorption plate.

[0036] Figure 11 yes Figure 1 The assembly diagram of the support plate, the second ball bearing, and the third ball bearing in the illustrated embodiment.

[0037] Figure 12 This is an exploded view of the optical element driving mechanism of another embodiment of the present invention.

[0038] Figure 13 yes Figure 12 A perspective view of the frame in the illustrated embodiment.

[0039] Figure 14 yes Figure 12 A perspective view of the base assembly in the illustrated embodiment.

[0040] Figure 15 yes Figure 12 An exploded view of the base assembly in the illustrated embodiment.

[0041] Figure 16 yes Figure 12 An exploded view of the support plate, the first roller, and the second roller in the embodiment shown.

[0042] 100. Optical element driving mechanism; 1. Base assembly; 11. Base plate; 111. First boss; 112. Second boss; 113. Support column; 114. Built-in circuit; 115. First bottom guide groove; 116. First adsorption plate; 12. Cutout area; 12. Support plate; 121. Ball bearing hole; 122. First top guide groove; 123. Second bottom guide groove; 13. Circuit board; 14. First coil group; 15. First ball bearing; 16. Second ball bearing; 17. 18. First roller; 19. Second roller; 2. Frame; 21. Magnet assembly; 22. Second top guide groove; 23. Abutment plate; 24. First electrode plate; 25. Second electrode plate; 26. Third sensing plate; 27. First side guide groove; 29. ​​Guide shaft; 3. Carrier; 31. Second coil assembly; 32. Second side guide groove; 33. Third electrode plate; 34. Second adsorption plate; 4. Spring; 5. Outer shell; X, first direction; Y, second direction; Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model 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 utility model 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.

[0044] 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”.

[0045] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of this utility model. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of this utility model, but are merely illustrative of the essential spirit of the technical solution of this utility model.

[0046] 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.

[0047] 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.

[0048] In the following description, in order to clearly demonstrate the structure and working method of this utility model, 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.

[0049] This utility model relates to an optical element driving mechanism 100 and its base assembly 1. The optical element driving mechanism 100 includes a base assembly 1, a frame 2, a spring 4 and a housing 5.

[0050] The base assembly 1 includes a base plate 11, a support plate 12, a circuit board 13, built-in wiring 114, a first coil group 14 on the circuit board 13, and four support columns 113 on the base plate 11.

[0051] exist Figure 1-11 In the embodiment shown, the base plate 11 is rectangular and has four protrusions on its top surface. The four protrusions are located at the four corners of the base plate 11, two of which are first protrusions 111 and the other is second protrusion 112.

[0052] The two first protrusions 111 have the same height and are respectively provided with ball grooves on their top surfaces. The two ball grooves are semi-circular grooves and are respectively installed with rolling balls. These two balls are defined as first balls 15.

[0053] The top surface of the second boss 112 is provided with a first bottom guide groove 115, which extends along the first direction X.

[0054] Four support columns 113 are installed at the four corners of the base plate 11 and are located on the radial outer side of the four bosses. The four support columns 113 have the same height and are integrally injection molded with the base plate 11.

[0055] The built-in wiring 114 is installed inside the base plate 11, and part of the connection end of the built-in wiring 114 is located on the top surface of the support column 113. The built-in wiring 114 can be used for electrical connection with an external power source.

[0056] The circuit board 13 is C-shaped and stacked on the top surface of the base plate 11. The circuit board 13 abuts against the side walls of the four bosses, and the top surface of the circuit board 13 does not protrude from the top surface of the four bosses.

[0057] The circuit board 13 is electrically connected to the built-in circuit 114, and the first coil group 14 is mounted on the top surface of the circuit board 13.

[0058] The support plate 12 is located on the top surface of the second boss 112. A movable first rolling element is installed on the bottom surface of the support plate 12, and a movable second rolling element is installed on the top surface. The first rolling element is rotatably installed in the first bottom guide groove 115 of the base plate 11.

[0059] exist Figure 1-11 In the illustrated embodiment, the support plate 12 has four ball bearing holes 121, two of which are arranged along the first direction X and each is fitted with a first rolling element, which is a ball bearing, defined as a second ball bearing 16. The two second ball bearings 16 protrude from the bottom surface of the second support plate 12 and are located within the first bottom guide groove 115 of the base plate 11. It should be understood that in other embodiments, the two second ball bearings can also be disposed on the base plate and rotatably connected to it. A first top guide groove extending along the first direction is provided on the bottom surface 12 of the support plate, and the two second ball bearings are located within this first top guide groove. When the support plate moves along the first direction, the first top guide groove or the first bottom guide groove can serve a guiding function.

[0060] The other two ball bearing holes 121 are arranged along the second direction Y, and two second rolling elements are installed inside them. The two second rolling elements are also balls, and these two rolling elements are defined as third balls 17. The two third balls 17 protrude from the top surface of the support plate 12. The second direction Y is perpendicular to the first direction X.

[0061] The third ball bearing 17 is fitted into the second top guide groove extending in the second direction of the frame. Of course, in other embodiments, the two third balls bearings can be rotatably connected to the frame. The frame is provided with ball holes for installing the third balls bearings, and the top of the support plate is provided with a second bottom guide groove extending in the second direction. Both the second top guide groove and the second bottom guide groove serve a guiding function.

[0062] The top surface of the support plate 12 is flush with the top surface of the first boss 111, and the diameters of the first ball 15, the second ball 16 and the third ball 17 are preferably the same.

[0063] In the design, the second ball bearing 16 and the third ball bearing 17 can be directly fixed on the support plate 12, or a hemispherical structure can be directly fixed or integrally formed. Of course, the second ball bearing 16, the third ball bearing 17 or the hemispherical structure can also be set at the bottom of the frame 2 and the top of the base plate. The bottom surface and the bottom surface of the support plate 12 are respectively provided with guide grooves to accommodate the second ball bearing 16 and the third ball bearing 17. That is, the relationship between the two is reversed, which can also achieve the technical effect of reducing friction.

[0064] The frame 2 is located on the top surface of the base plate 11 and the support plate 12. The bottom surface of the frame 2 abuts against the first ball 15 and the second rolling element on the support plate 12. The bottom surface of the frame 2 is provided with a second top guide groove 22, which also extends along the second direction Y.

[0065] The second rolling element is located within the second top guide groove 22 of the frame 2. Of course, the second rolling element can be a ball or a roller. It should be understood that, for stable support of the frame 2, the top surface of the second rolling element is flush with the top surfaces of the two first balls 15.

[0066] The frame 2, two first ball bearings 15, and a second rolling element are rotatably connected. The frame 2 can move relative to the support plate 12 along the second direction Y. The two first ball bearings 15 support the frame 2's movement along the second direction Y. The second rolling element serves as a guide within the second top guide groove 22. The second rolling element is mounted on the support plate 12, and the second rolling element and the two first ball bearings 15 form a stable triangular structure.

[0067] When the frame 2 moves along the first direction X, due to the cooperation between the second top guide groove 22 and the two second balls 16, the frame 2 and the support plate 12 move together along the first direction X. The two first balls 15 support the frame 2 to move along the first direction X. The first rolling element can play a guiding role in the first bottom guide groove 115, which can restrict the support plate 12 from moving in other directions and increase the stability of the support plate 12.

[0068] This utility model utilizes a support plate 12 and ball bearing holes 121 on the support plate 12, along with the first bottom guide groove 115 and two first balls 15 on the base plate 11, to achieve a rolling connection between the support frame 2 and the base plate 11. Moreover, the support plate 12 and the two first balls 15 form a triangular stable relationship, making the support relationship between the frame 2 and the support plate 12 more stable and preventing the frame 2 from shaking.

[0069] exist Figure 12-16 In the illustrated embodiment, both the first rolling element and the second rolling element are rollers, defined as first roller 18 and second roller 19. A first bottom guide groove 115 extending along a first direction is provided on the base plate. The first rolling element is installed in the first bottom guide groove and is rotatably connected to the inner wall of the first bottom guide groove. A first top guide groove 122 extending along the first X direction is provided on the bottom surface of the support plate 12. The first top guide groove 122 and the first bottom guide groove 115 of the base plate 11 cooperate to accommodate the first roller 18. It should be understood that the first rolling element can also be rotatably connected to the inner wall of the first top guide groove 122, with a portion located within the first bottom guide groove of the base plate.

[0070] The top surface of the support plate 12 is provided with a second bottom guide groove 123 extending along the second direction Y, and the second roller 19 is located in the second bottom guide groove 123 and is rotatably connected to the inner wall of the second bottom guide groove 123.

[0071] The bottom surface of frame 2 is provided with a second top guide groove 22, which also extends along the second direction Y and is located above the second bottom guide groove 123. The second top guide groove 22 and the second bottom guide groove 123 cooperate to accommodate the second roller 19. Of course, the second roller 19 can also be installed in the second top guide groove 22 and be rotatably connected to the inner wall of the second top guide groove 22.

[0072] It should be understood that in other embodiments, the first rolling element may also be a ball that can be rolledly mounted on the base plate 11, and a first top guide groove 122 extending along the first direction X is provided on the support plate 12, with the first rolling element located within the first top guide groove 122. The second rolling element is a ball that can be rolledly connected to the bottom surface of the frame 2, and a second bottom guide groove 123 extending along the second direction Y is provided on the top surface of the support plate 12, with the second bottom guide groove 123 accommodating the ball on the bottom surface of the frame 2.

[0073] A magnet assembly 21 is also installed on the frame 2. The magnet assembly 21 and the first coil assembly 14 on the circuit board 13 are aligned vertically. The magnet assembly 21 and the first coil assembly 14 work together to drive the frame 2 to move along the first direction X or the second direction Y, thus playing a role in anti-shaking.

[0074] Of course, in other embodiments, the magnet group 21 may be disposed on the base plate 11 and the first coil group 14 may be disposed on the frame 2.

[0075] The bottom surface of the frame 2 is equipped with abutment plates 23 that abut against the first ball 15 and the second ball 16 respectively. The abutment plates 23 can be metal sheets or ceramic sheets to avoid wear on the frame 2.

[0076] The base plate 11 is also provided with a first adsorption plate 115, which is aligned with the magnet group 21 in the vertical direction and attracts each other, so as to attract the frame 2 toward the base plate 11.

[0077] The first adsorption plate 115 has a hollow area 116, which is aligned with the first coil group 14. The hollow area 116 of the first adsorption plate 115 can avoid the first coil group 14, increasing its relative area with the magnet group 21, thereby increasing the magnetic attraction force.

[0078] The frame 2 is provided with a first electrode plate 24 and a second electrode plate 25. The first electrode plate 24 and the second electrode plate 25 are located on the same side of the frame 2 and their planes are parallel to the circuit board 13.

[0079] The circuit board 13 is provided with a first sensing sheet and a second sensing sheet. The first sensing sheet is located below the first electrode sheet 24 and cooperates with the first electrode sheet 24 to form a first capacitor.

[0080] The second sensing element is located below the second electrode 25 and cooperates with the second electrode 25 to form a second capacitor.

[0081] The capacitance of the first capacitor and the second capacitor changes as the frame 2 moves along the first direction X and the second direction Y. The position of the frame 2 can be sensed based on the capacitance changes of the first capacitor and the second capacitor.

[0082] The carrier 3 is used to mount the lens. The carrier 3 can be movably mounted inside the ring of the frame 2 and is provided with a second coil group 31. The second coil group 31 and the magnet group 21 cooperate to drive the carrier 3 to move in the vertical direction, thereby adjusting the focal length of the lens.

[0083] The frame 2 also has two side guide grooves on its radially inner side. These side guide grooves extend vertically and a guide shaft 29 is installed inside them. The axis of the guide shaft 29 also extends vertically. This side guide groove is defined as the first side guide groove 27.

[0084] The carrier 3 is also provided with two other side guide grooves on its radial outer side. These two side guide grooves are defined as the second side guide grooves 32. The second side guide grooves 32 also extend in the vertical direction and are aligned with the first side guide groove 27 to accommodate the guide shaft 29. The second side guide grooves 32 can guide the carrier 3 to move in the vertical direction and can also reduce the collision and wear between the carrier 3 and the frame 2.

[0085] The two first side guide grooves 27 of the frame 2 are located on both sides of one of the magnet groups 21. The carrier 3 is provided with a second adsorption plate 34, which is aligned with the magnet group 21, so that the side of the carrier 3 with the second side guide groove 32 and the side of the frame 2 with the first side guide groove 27 are attracted to each other and brought close together.

[0086] The frame 2 contains a third sensing element 26, while the carrier 3 contains a third electrode 33. The third electrode 33 and the third sensing element 26 are opposite to each other and cooperate to form a third capacitor. As the carrier 3 moves vertically, the capacitance of the third capacitor changes, and the position of the carrier 3 can be determined based on this change in capacitance.

[0087] The reed 4 is located above the frame 2 and the carrier 3. The reed 4 is elastically connected to the frame 2 and the carrier 3. After the carrier 3 moves, the reed 4 can drive the carrier 3 to reset.

[0088] In addition, the reed 4 is electrically connected to the connecting end at the top of the support column 113 and to the second coil group 31 of the carrier 3, and can be powered from the second coil group 31.

[0089] Of course, the third electrode 33 is also electrically connected to the spring 4, so that the third electrode 33 is energized.

[0090] Both the carrier 3 and the frame 2 have built-in metal frames. The built-in metal frame in the carrier 3 is electrically connected to the second coil group 31 and the third electrode plate 33, and is also electrically connected to the reed 4. The built-in metal frame in the frame 2 is electrically connected to the first electrode plate 24, the second electrode plate 25, and the reed 4. In other words, the reed 4 can energize the built-in metal frames in the carrier 3 and the frame 2.

[0091] The housing 5 covers the frame 2 and the support column 113 and is connected to the base plate 11. The housing 5 defines the space of the entire optical element drive mechanism 100 and protects the internal structure.

[0092] 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.

[0093] 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.

[0094] 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 can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A base assembly, characterized in that, include: The base plate has at least two ball grooves on its top surface, and each ball groove is fitted with a ball. A support plate, the support plate being located on the top surface of the base plate and the bottom surface of the support plate abutting against the ball bearing; A first rolling element is located between the base plate and the support plate and is rotatably connected to the base plate and the support plate.

2. The base assembly according to claim 1, characterized in that, The top surface of the base plate is provided with a first bottom guide groove; the first bottom guide groove extends along a first direction; The first rolling element is rotatably connected to the support plate and is located within the first bottom guide groove.

3. The base assembly according to claim 1, characterized in that, The first rolling element is a ball or a roller.

4. The base assembly according to claim 1, characterized in that, Two first rolling elements are installed on the bottom surface of the support plate. The two first rolling elements are arranged along the first direction and are both ball bearings.

5. The base assembly according to claim 4, characterized in that, The bottom surface of the support plate is provided with ball bearing holes for installing the first rolling element.

6. The base assembly according to claim 2, characterized in that, The top surface of the base plate is provided with a first boss and at least two second bosses. The bottom surface of the first boss is provided with the first bottom guide groove, and the top surface of the second bosses is provided with the ball groove. The support plate is located on the top surface of the first boss and the top surface of the support plate is flush with the top surface of the second boss.

7. The base assembly according to claim 2, characterized in that, The base assembly also includes a second rolling element, which is connected to the support plate.

8. The base assembly according to claim 7, characterized in that, Two second rolling elements are mounted on the top surface of the support plate. The two second rolling elements are arranged at intervals along a second direction and are both ball bearings. The second direction is perpendicular to the first direction.

9. The base assembly according to claim 1, characterized in that, The bottom surface of the support plate is provided with a first top guide groove extending in a first direction; The first rolling element is connected to the base and is located within the first top guide groove.

10. The base assembly according to claim 9, characterized in that, The first rolling element is a ball or a roller.

11. The base assembly according to claim 10, characterized in that, The top surface of the base plate is provided with a first bottom guide groove; The first bottom guide groove and the first top guide groove cooperate to accommodate the first rolling element, which is a rolling shaft.

12. The base assembly according to claim 10, characterized in that, The base assembly also includes a second rolling element that is rotatably connected to the top of the support plate.

13. The base assembly according to claim 12, characterized in that, The top surface of the support plate is provided with a second bottom guide groove extending in the second direction; The second rolling element is a roller and is rotatably mounted in the second bottom guide groove; The second direction is perpendicular to the first direction.

Images