Ball driving mechanism and periscopic motor

Abstract

The utility model discloses a ball driving mechanism and a periscopic motor. The ball driving mechanism comprises an inner shell, a prism assembly and a driving assembly used for providing power for the prism assembly. The prism assembly comprises a prism support used for installing a prism, and the prism support is arranged in the inner shell. The ball assembly is used for supporting the prism support to move, the ball assembly comprises a ball and a magnetic conductive sheet, and the magnetic conductive sheet and the ball can rotate relatively; the prism support can be driven by the driving assembly to rotate based on the ball assembly. And magnetic lines emitted by the permanent magnet can penetrate through the balls to reach the magnetic conductive sheet, so that the balls and the magnetic conductive sheet are attracted. In order to prevent the balls from being separated from the magnetic conductive sheets in the rotating process, the balls and the magnetic conductive sheets attract each other through the permanent magnets, so that the matching precision of the balls and the magnetic conductive sheets is improved, and the rotating performance of the prism support is improved.

Description

Technical Field

[0001] The utility model relates to a periscope motor prism driving mechanism and a periscope motor. Background Art

[0002] With the continuous advancement of technology, image acquisition devices such as digital cameras or mobile phones, video game consoles, PDAs with camera functions have become increasingly popular on the market. Their convenient function of being able to take pictures and view them instantly has become a convenient tool for people to use to record things in their daily lives or work.

[0003] To achieve zoom, conventional lenses require telescopic functionality. To further reduce the size of the lens and improve the portability of electronic devices, a prism-type lens has been invented. This type of lens hides the lens internally and refracts incoming light onto the lens via a prism. The lens then moves along a linear optical axis to adjust the optimal focal length. This eliminates the need for telescopic lens configurations for zooming, significantly reducing the overall lens thickness and weight, effectively enhancing the portability of image capture devices.

[0004] In the field of periscope motors, the prism needs to rotate around the X and Y axes for anti-shake. To ensure smoother rotation, a ball bearing is often used as the prism's fulcrum. Conventional ball bearing structures require high precision between the ball groove and the ball, resulting in poor stability and reliability, which affects the performance of the entire periscope motor. Utility Model Content

[0005] In view of this, the utility model provides a ball drive mechanism and a periscope motor, which improve the matching precision between the ball and the prism, thereby improving the performance of the prism rotation.

[0006] In order to solve the above technical problems, the technical solution of the present invention is to adopt a ball drive mechanism, including an inner shell, a prism assembly and a drive assembly for providing power to the prism assembly; the prism assembly includes a prism bracket for mounting the prism, and the prism bracket is arranged inside the inner shell; it also includes a ball assembly for supporting the movement of the prism bracket, the ball assembly includes balls and a magnetic conductive sheet, and the magnetic conductive sheet and the balls can rotate relative to each other; so that the prism bracket can rotate based on the ball assembly under the drive of the drive assembly; it also includes a permanent magnet arranged behind the balls, and the magnetic lines of force emitted by the permanent magnet can penetrate the balls and reach the magnetic conductive sheet, so that the balls and the magnetic conductive sheet are adsorbed.

[0007] In some embodiments, the prism bracket can be rotated around the X-axis and Y-axis using a ball assembly under the drive of a driving assembly; the X-axis and Y-axis are perpendicular to each other, wherein the X-axis is the axial direction of the prism, and the Y-axis is perpendicular to the light-incoming surface of the prism.

[0008] In some embodiments, the magnetic conductive sheet is disposed on the prism bracket, and the ball bearing is disposed on the inner shell to cooperate with the magnetic conductive sheet to support the rotation of the prism bracket. Alternatively, the ball bearing is disposed on the prism bracket, and the magnetic conductive sheet is disposed on the inner shell to cooperate with the ball bearing to support the rotation of the prism bracket.

[0009] In some embodiments, the ball bearing is fixedly embedded in the base; and the base is provided with a mounting groove for mounting a permanent magnet.

[0010] In some embodiments, a mounting hole is formed on the inner shell, and the base is snapped into the mounting hole.

[0011] In some embodiments, a fixing groove is formed on the prism bracket, and the magnetic conductive sheet is disposed in the fixing groove.

[0012] In some embodiments, the balls are hemispherical.

[0013] In some embodiments, the driving assembly includes an X-axis driving permanent magnet and a Y-axis driving permanent magnet fixed on two mutually perpendicular surfaces of the prism bracket; and also includes an X-axis driving coil and a Y-axis driving coil fixed on the inner shell corresponding to the positions of the X-axis driving permanent magnet and the Y-axis driving permanent magnet.

[0014] In some embodiments, the X-axis driving coil and the Y-axis driving coil are fixed on an FPC and powered by the FPC.

[0015] In some embodiments, an outer shell is further included, and the outer shell can be snap-fitted with the inner shell.

[0016] The utility model also provides a periscope motor, comprising the above-mentioned ball driving mechanism.

[0017] The utility model is beneficial in that:

[0018] In this utility model, the prism holder rotates using a ball bearing as a fulcrum. The ball bearing itself does not rotate; rather, the relative rotation between the ball bearing and the magnetic sheet enables the prism holder to rotate. To prevent the ball bearing and the magnetic sheet from separating during rotation, this utility model uses a permanent magnet to attract the ball bearing and the magnetic sheet, thereby improving the precision of their fit and enhancing the prism holder's rotational performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded view of the ball drive mechanism of Example 1 of the present utility model.

[0020] Figure 2 This is an exploded view of the ball assembly in the ball drive mechanism of Example 1 of the present invention.

[0021] Figure 3 This is an exploded view of the prism assembly in the ball drive mechanism of Example 1 of the present utility model.

[0022] Figure 4 This is a structural schematic diagram of the prism bracket in the ball drive mechanism of Example 1 of the present utility model.

[0023] Markings in the figure:

[0024] 1 outer shell, 2 ball assembly, 3 inner shell, 4 prism assembly, 5 drive assembly;

[0025] 21 ball, 22 base, 23 permanent magnet, 24 magnetic conductive sheet;

[0026] 31 mounting holes;

[0027] 41 prism, 42 prism bracket, 43 prism fixing groove, 44 fixing groove;

[0028] 51Y-axis driving coil, 52X-axis driving coil, 53Y-axis driving permanent magnet, 54X-axis driving permanent magnet. DETAILED DESCRIPTION

[0029] To help those skilled in the art better understand the technical solutions of the present invention, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific facts and methods described herein are only used to interpret the relevant content and are not intended to limit the present disclosure. It should also be noted that for ease of interpretation, only the parts relevant to the present disclosure are shown in the accompanying drawings.

[0030] It should be noted that, in the absence of conflict, the specific factual aspects and features in the specific factual aspects in this disclosure can be combined with each other.

[0031] Unless otherwise stated, the exemplary specific embodiments / embodiments shown are to be understood as providing exemplary features of various details of some ways in which the technical concept of the present disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of the various specific embodiments / embodiments can be further combined, separated, interchanged and / or rearranged without departing from the technical concept of the present disclosure.

[0032] Example 1

[0033] like Figure 1 、 Figure 2As shown, the utility model provides a ball drive mechanism, which is used for driving a prism in a periscope motor, and includes an inner shell 3, a prism assembly 4 and a drive assembly 5 for providing power to the prism assembly 4; the prism assembly 4 includes a prism bracket 42 for mounting a prism 41, and the prism bracket 42 is arranged inside the inner shell 3; it also includes a ball assembly 2 for supporting the movement of the prism bracket 42, and the ball assembly 2 includes a ball 21 and a magnetic conductive sheet 24, and the magnetic conductive sheet 24 and the ball 21 can rotate relative to each other; so that the prism bracket 42 can rotate based on the ball assembly 2 under the drive of the drive assembly 5; it also includes a permanent magnet 23 arranged behind the ball 21, and the magnetic lines of force emitted by the permanent magnet 23 can penetrate the ball 21 and reach the magnetic conductive sheet 24, so that the ball 21 and the magnetic conductive sheet 24 are adsorbed.

[0034] In this embodiment, the prism bracket 42 can be driven by the drive assembly 5 and rotated about the X-axis and Y-axis using the ball assembly 2. The X-axis and Y-axis are perpendicular to each other, with the X-axis being the axial direction of the prism 41 and the Y-axis being perpendicular to the light-incoming surface of the prism 41. It should be understood that the X-axis and Y-axis are merely designations of the axes and are not intended to be limiting.

[0035] The prism holder 42 rotates with the ball 21 as the fulcrum. The ball 21 itself does not rotate; rather, the relative rotation between the ball 21 and the magnetic sheet 24 enables the prism holder 42 to rotate. To prevent separation between the ball 21 and the magnetic sheet 24 during rotation, the present invention employs a permanent magnet 23 to attract the ball 21 and the magnetic sheet 24, thereby improving the precision of their fit and enhancing the rotational performance of the prism holder 42.

[0036] In this embodiment, the magnetic conductive sheet 24 is disposed on the prism support 41, and the ball bearings 21 are disposed on the inner shell 3 to cooperate with the magnetic conductive sheet 24 to support the rotation of the prism support 41. Of course, it is not excluded that the ball bearings 21 are disposed on the prism support 21, while the magnetic conductive sheet 24 is disposed on the inner shell 3.

[0037] More specifically, the ball bearing 21 is hemispherical and fixedly embedded in the base 22. The base 22 has a mounting slot for the permanent magnet 23. The permanent magnet 23 is secured within the mounting slot by dispensing glue. It will be appreciated that the ball bearing 21 is made of a magnetically conductive material, preferably steel. In actual use, the rotation angle of the prism 41 is not very large, so the hemispherical shape of the ball bearing 21 is sufficient to provide the angular travel of the prism 41.

[0038] In addition, the base 22 can be manufactured by injection molding, and can be integrally molded by injection molding of a highly wear-resistant material, or can be molded by machining according to different usage conditions.

[0039] In order to facilitate the installation of the base 22, a mounting hole 31 is opened on the inner shell 3, and the base 22 is clamped in the mounting hole 31 and fixed by glue. Figure 4 shown.

[0040] like Figure 3 As shown, a prism fixing groove 43 is provided on the prism bracket 42, and the prism 41 is fixed in the prism fixing groove by dispensing glue. In addition, a fixing groove 44 is also provided on the prism bracket 42, and the magnetic conductive sheet 24 is provided in the fixing groove 44. Of course, it is understandable that in order to achieve adsorption with the ball 21, the magnetic conductive sheet 24 is also made of a magnetic conductive material such as a steel sheet. The surface where the magnetic conductive sheet 24 contacts the ball 21 is a plane. In addition, since relative rotation occurs between the magnetic conductive sheet 24 and the ball 21, the friction between the steel magnetic conductive sheet 24 and the ball 21 is smaller than that of plastic, and the mutual cooperation can also improve the smoothness of its rotation.

[0041] In addition, in this embodiment, the driving assembly 5 includes an X-axis driving permanent magnet 54 and a Y-axis driving permanent magnet 53 fixed on two mutually perpendicular surfaces of the prism bracket 41; and also includes an X-axis driving coil 52 and a Y-axis driving coil 51 fixed on the inner shell 3 and corresponding to the positions of the X-axis driving permanent magnet 54 and the Y-axis driving permanent magnet 53. By cooperating with the X-axis driving permanent magnet 54 and the X-axis driving coil 52, the prism bracket 42 can be driven to rotate around the X-axis. And by cooperating with the Y-axis permanent magnet 53 and the Y-axis driving coil 51, the prism bracket 42 can be driven to rotate around the Y-axis. It is understandable that the positions of the X-axis driving permanent magnet 54 and the Y-axis driving permanent magnet 53 are interchangeable, and this is not limited in this embodiment.

[0042] The X-axis driving coil 52 and the Y-axis driving coil 51 are fixed on an FPC (flexible printed circuit) and powered by the FPC, thereby improving integrity and facilitating installation.

[0043] In this embodiment, an outer shell 1 is further included, and the outer shell 1 can be snapped together with the inner shell 3 to seal the entire device.

[0044] The assembly process of the utility model is as follows:

[0045] The X-axis driving permanent magnet 54 and the Y-axis driving permanent magnet 53 are bonded and combined with the prism bracket 42 using a glue dispensing process through the side glue dispensing grooves. The prism 41 and the prism bracket 42 are bonded and combined using a glue dispensing process through the prism fixing groove 43. The magnetic conductive sheet 24 is bonded and combined with the prism bracket 42 using a glue dispensing process through the fixing groove 44. The prism assembly 4 is assembled.

[0046] The permanent magnet 23 is glued together through the mounting slot on the back of the base 22 using a dispensing process. The base 22 is then secured through the mounting hole 31 on the top of the inner shell 3 using a dispensing process. After the prism assembly 4 is assembled with the inner shell 3, lubricant is applied between the ball bearing 21 and the magnetic conductive sheet 24 using a dispensing process. Finally, the drive assembly 5 is assembled with the outer shell 1 to form a complete unit.

[0047] The inner shell 3 is fixed relative to the entire motor. After being energized, the X-axis drive coil 52 and the Y-axis drive coil 51 on the FPC generate electromagnetic force with the X-axis drive permanent magnet 54 and the Y-axis drive permanent magnet 53, generating an X / Y-axis angular displacement force on the prism assembly 4. Driven by the electromagnetic force, the prism assembly 4 is angularly displaced inside the inner shell 3 with the ball 21 as the fulcrum. The prism assembly 4 rotates more stably and accurately under the adsorption action of the ball 21 and the magnetic conductive sheet 24, thereby improving the performance and reliability of the entire motor.

[0048] Example 2

[0049] The utility model also provides a periscope motor, comprising the above-mentioned ball driving mechanism.

[0050] Specifically, the periscope motor provided in this embodiment has the same beneficial effects as the above-mentioned ball drive mechanism, which will not be described in detail here.

[0051] It should be noted that when a component is referred to as being “on,” “over,” “connected to,” or “combined with” another component, the component may be directly on, directly connected to, or directly combined with the other component, or intervening components may be present. However, when a component is referred to as being “directly on,” “directly connected to,” or “directly combined with” another component, there are no intervening components. For this purpose, the terms “combined with,” “connected to,” or “connected to” may refer to physical connections, electrical connections, etc., with or without intervening components.

[0052] For descriptive purposes, the present disclosure may use spatially relative terms such as "below," "beneath," "under," "down," "above," "upper," "above," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the drawings is turned over, a component described as "below" or "beneath" another component or feature would then be positioned "above" the other component or feature. Thus, the exemplary term "below" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and as such, the spatially relative descriptors used herein should be interpreted accordingly.

[0053] The terms used herein are for the purpose of describing specific embodiments and are not intended to be restrictive. As used herein, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, the features, integral bodies, steps, operations, parts, assemblies and / or their groups stated are explained, but the presence or addition of one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups is not excluded. It should also be noted that, as used herein, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0054] It should be noted that, if there is no conflict, the various technical features in the embodiments of the present invention can be combined with each other.

[0055] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0057] Those skilled in the art will appreciate that the above specific embodiments are merely intended to clearly illustrate the present disclosure and are not intended to limit the scope of the present disclosure. Other changes or modifications may be made based on the above disclosure, and such changes or modifications are still within the scope of the present disclosure.

[0058] The above are merely preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be construed as limiting the present invention. The scope of protection of the present invention shall be determined by the scope defined in the claims. Persons skilled in the art will appreciate that improvements and modifications may be made without departing from the spirit and scope of the present invention, and such improvements and modifications shall also be considered within the scope of protection of the present invention.

Claims

1. A ball drive mechanism, characterized in that: It includes an inner shell, a prism assembly and a driving assembly for providing power to the prism assembly; the prism assembly includes a prism bracket for mounting the prism, and the prism bracket is arranged inside the inner shell; it also includes a ball assembly for supporting the movement of the prism bracket, the ball assembly includes balls and a magnetic conductive sheet, and the magnetic conductive sheet and the balls can rotate relative to each other, so that the prism bracket can rotate based on the ball assembly under the drive of the driving assembly; it also includes a permanent magnet arranged behind the balls, and the magnetic lines of force emitted by the permanent magnet can penetrate the balls and reach the magnetic conductive sheet, so that the balls and the magnetic conductive sheet are adsorbed.

2. The ball drive mechanism according to claim 1, characterized in that: The prism bracket can be rotated around the X-axis and Y-axis using the ball assembly under the drive of the driving assembly; the X-axis and Y-axis are perpendicular to each other, wherein the X-axis is the axial direction of the prism, and the Y-axis is perpendicular to the light-incoming surface of the prism.

3. The ball drive mechanism according to claim 1, characterized in that: The magnetic conductive sheet is arranged on the prism bracket, and the ball is arranged on the inner shell to cooperate with the magnetic conductive sheet to support the rotation of the prism bracket; or, the ball is arranged on the prism bracket, and the magnetic conductive sheet is arranged on the inner shell to cooperate with the ball to support the rotation of the prism bracket.

4. The ball drive mechanism according to claim 2, wherein: The ball bearings are fixedly embedded in the base; and a mounting groove for mounting a permanent magnet is provided on the base.

5. The ball drive mechanism according to claim 4, characterized in that: The inner shell is provided with a mounting hole, and the base is clamped in the mounting hole.

6. The ball drive mechanism according to claim 3, characterized in that: A fixing groove is provided on the prism bracket, and the magnetic conductive sheet is arranged in the fixing groove.

7. The ball drive mechanism according to claim 1, characterized in that: The ball is hemispherical.

8. The ball drive mechanism according to claim 1, characterized in that: The driving assembly includes an X-axis driving permanent magnet and a Y-axis driving permanent magnet fixed on two mutually perpendicular surfaces of the prism bracket; and also includes an X-axis driving coil and a Y-axis driving coil fixed on the inner shell and corresponding to the positions of the X-axis driving permanent magnet and the Y-axis driving permanent magnet.

9. The ball drive mechanism according to claim 8, characterized in that: The X-axis driving coil and the Y-axis driving coil are fixed on the FPC and powered by the FPC.

10. A periscope motor, characterized in that: The invention comprises the ball drive mechanism according to any one of claims 1 to 9.

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