High-precision two-shaft rotating motor framework

Abstract

The utility model relates to a high-precision two-shaft rotating motor framework, which comprises a base, a first prism bracket, a first driving part, a second prism bracket and a second driving part, the first prism bracket is rotationally connected with the second prism bracket through a first rotating mechanism; the second prism bracket is rotationally connected with the base through a second rotating mechanism; according to the utility model, the theta x rotating structure is arranged on the outer layer, the two second balls are utilized to form a rotating shaft, and the distance between the two second balls is relatively large, so that the theta x rotating precision and stability can be improved; the rotating structure of theta z is arranged on the inner layer, so that the influence caused by the gravity of the prism is greatly reduced, the movement stability of the bracket is improved, the distance between the two first balls can be shortened, and the size of the motor is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of optical imaging, especially to a high-precision two-axis rotating motor architecture. BACKGROUND

[0002] The periscopic lens structure usually includes two parts, namely a lens part and a prism part, wherein the prism part is arranged at the front end of the periscopic part, and an imaging chip is arranged at the rear end of the lens part, and light is reflected into the lens part through the prism part.

[0003] The shooting function of the camera of the existing electronic device is getting stronger and stronger. The conventional photographic lens can only shoot close-range (1-2 meters) images. If you want to shoot a clear long-range (10-20 meters) image, the lens must have a long-range or zoom function. However, such a lens often needs a long stroke to achieve zoom, resulting in a relatively long total length of the lens, and the height of the lens exceeds the thickness of the electronic device, making it difficult to meet the needs of mobile terminal devices for thinness or thinness. To this end, a periscopic design as shown in Figure 1 is usually used, that is, the optical path is designed to lie flat, and a prism is added to rotate the optical path by 90 degrees. At this time, the prism support on the mechanism needs to be adjusted by a small angle of θx and θy, and the OIS hand-shake compensation is performed to lay the entire optical system flat to reduce the overall height and complete the focusing or zooming in the Z-axis direction with the focusing motor.

[0004] However, the traditional periscopic optical system produces eccentricity in the 0 field of view spot position during the anti-handshake process, resulting in a decrease in resolving power. In 2020, Huawei proposed a new optical system (CN115917401A) that changes θy to θz, as shown in Figure 2 , which can effectively improve the optical imaging quality, and the design of the optical machine also needs to be changed accordingly.

[0005] In patent application numbers 202421877241.X and 202422832134.1, new two-axis rotation structures are provided. However, in this structure, the sensitivity of θx is high, so a more stable structure is needed. The placement position of the θz rotation structure is limited by the prism structure, and the risk of overturning is easy to occur due to the influence of the gravity of the prism. Therefore, the length of the rotation shaft structure needs to be increased to increase the stability, which leads to an increase in the size of the motor. UTILITY MODEL CONTENTS

[0006] To solve the above problems of the prior art, the utility model provides a high-precision two-axis rotating motor architecture.

[0007] To achieve the above purpose, the utility model adopts the main technical scheme comprising:

[0008] A high-precision two-axis rotating motor architecture comprises:

[0009] a base;

[0010] a first prism support configured to be fixedly connected with a prism, wherein the prism is configured to adjust light rays incident along a second direction to be transmitted along a third direction, the third direction being perpendicular to the second direction;

[0011] a first driving part configured to drive the first prism support to rotate relative to the base about the third direction;

[0012] a second prism support configured to support the first prism support;

[0013] a second driving part configured to drive the second prism support to rotate relative to the base about a first direction, the first direction being perpendicular to the second direction and perpendicular to the third direction;

[0014] the first prism support is rotationally connected with the second prism support through a first rotation mechanism, and the second prism support is rotationally connected with the base through a second rotation mechanism.

[0015] Further, the first driving part comprises a first coil and a first magnet oppositely arranged along the third direction, the first coil is arranged on the base, and the first magnet is arranged on the first prism support.

[0016] Further, the second driving part comprises a second coil and a second magnet oppositely arranged along the second direction, the second coil is arranged on the base, and the second magnet is arranged on the second prism support.

[0017] Further, the first rotation mechanism comprises at least two first guide members arranged along the third direction, and the second rotation mechanism comprises at least two second guide members arranged along the first direction.

[0018] Further, the first rotation mechanism comprises two first guide members, the first guide members are first balls, the first prism support is provided with a first positioning groove matched with one of the first balls and a first limiting groove matched with the other first ball, the first positioning groove is one of a tapered groove, a multi-sided groove, a V-shaped groove and a square groove, so that the first ball can only rotate at a fixed point in the first positioning groove, the first limiting groove is a V-shaped groove, and the length direction of the V-shaped groove is parallel to the third direction, the second prism support is provided with a first clamping groove matched with the first guide members, and the first clamping groove is one of a tapered groove, a multi-sided groove, a V-shaped groove and a square groove, so that the first ball can only rotate at a fixed point in the first clamping groove.

[0019] Further, the second rotating mechanism comprises two second guides; the second guides are second balls; the second prism support is provided with a second positioning groove matched with one of the first balls and a second limiting groove matched with the other first ball; the second positioning groove is one of a tapered groove, a multi-sided groove, a V-shaped groove and a square groove, so that the second ball can only rotate at a fixed point in the second positioning groove; the second limiting groove is a V-shaped groove, and the length direction of the V-shaped groove is parallel to the first direction; the base is provided with a second clamping groove matched with the first guide; the second clamping groove is one of a tapered groove, a multi-sided groove, a V-shaped groove and a square groove, so that the second ball can only rotate at a fixed point in the second clamping groove.

[0020] Further, the first rotating mechanism comprises two first guides, one of which is a first ball, and the other is a cylindrical shaft with the length direction parallel to the third direction; the second rotating mechanism comprises two second guides, one of which is a second ball, and the other is a cylindrical shaft with the length direction parallel to the first direction.

[0021] Further, the first rotating mechanism comprises two first guides, one of which is a semicircular protrusion arranged on the top of the second prism support, and the other is a semicircular protrusion arranged on the top of the second prism support with the length direction parallel to the third direction; the second rotating mechanism comprises two second guides, one of which is a semicircular protrusion arranged on the base, and the other is a semicircular protrusion arranged on the base with the length direction parallel to the first direction.

[0022] Further, the two first balls are arranged at intervals; the second prism support is provided with a magnetic conducting sheet between the two first balls; and the first prism support is provided with a reinforcing magnet matched with the magnetic conducting sheet.

[0023] The utility model discloses the beneficial effect is: the rotation structure of θx is arranged in the outer layer, utilizes two second balls to constitute the rotating shaft, and the distance of two second balls is far apart, thereby can promote the precision and stability of θx rotation;The rotation structure of θz is arranged in the inner layer, and the influence brought by prism gravity is greatly reduced, and the stability of support movement is increased, and the interval between two first balls can be shortened, and the size of motor is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained without creative labor on the basis of these drawings.

[0025] Figure 1 is a schematic diagram of the light path of the prism module of the prior art;

[0026] Figure 2 is a schematic diagram of the improved light path of the prism module;

[0027] Figure 3 is an exploded view of the structure of the present application;

[0028] Figure 4 is a bottom view of the first prism support of the present application;

[0029] Figure 5 is a bottom view of the second prism support of the present application;

[0030] Marked with the following drawings:

[0031] 100, base; 101, accommodating space; 110, top cover; 111, light inlet hole; 200, first prism support; 210, prism; 220, first rotating mechanism; 221, first ball; 222, first positioning groove; 223, first limiting groove; 224, first clamping groove; 225, reinforcing magnet; 226, magnetic guide sheet; 300, first driving part; 310, first coil; 320, first magnet; 400, second prism support; 410, second rotating mechanism; 411, second ball; 412, second positioning groove; 413, second limiting groove; 414, second clamping groove; 500, second driving part; 510, second coil; 520, second magnet; 600, lens module. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only to represent selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Embodiment:

[0036] As shown in Figure 3 The first direction is parallel to the X direction, the second direction is parallel to the Y direction, and the third direction is parallel to the Z direction; for the convenience of description, the first direction can also be referred to as the X direction, the second direction can also be referred to as the Y direction, and the third direction can also be referred to as the Z direction;

[0037] The high-precision two-axis rotating motor architecture comprises a base 100, a first prism support 200, a first driving part 300, a second prism support 400 and a second driving part 500. The base 100 is internally formed with a containing space 101 for placing the first prism support 200 and the second prism support 400 and allowing the first prism support 200 and the second prism support 400 to move. The first prism support 200 is fixedly connected with a prism 210. The prism 210 is used for adjusting light rays incident along the Y direction to be transmitted along the Z direction. The Z direction is also commonly referred to as the optical axis direction. The first driving part 300 is used for driving the first prism support 200 to rotate around the Z direction. The second driving part 500 is used for driving the second prism support 400 to rotate around the X direction. The first prism support 200 is arranged above the second prism support 400, so that when the second prism support 400 rotates around the X direction, the first prism support 200 can also be driven to rotate around the X direction, that is, the first prism support 200 can complete rotation in the X direction and the Z direction. Compared with the early scheme, in the application, the rotation axes of the first prism support 200 and the second prism support 400 are exchanged, the high-sensitivity rotating structure in the X direction is arranged on the outer layer, that is, the second prism support 400 completes rotation in the X direction, so as to increase the spacing between the rotating parts and help improve the precision and stability of the X direction rotation. The rotating structure in the Z direction is built-in, that is, the first prism support 200 is responsible for rotation in the Z direction, which can ensure better support for the prism 210 and reduce the risk of overturning, and the stability of the whole support movement is stronger.

[0038] The first driving part 300 comprises a first coil 310 and a first magnet 320 arranged oppositely in the Z direction. The first coil 310 is arranged on the base 100. The first magnet 320 is arranged on the first prism support 200.

[0039] The second driving part 500 comprises a second coil 510 and a second magnet 520 arranged oppositely in the Y direction. The second coil 510 is arranged on the base 100. The second magnet 520 is arranged on the second prism support 400.

[0040] In an embodiment, the first rotating mechanism 220 comprises at least two first guide members arranged along a third direction. The center connecting line of the plurality of first guide members is parallel to the third direction, and the center connecting line of the plurality of first guide members is the rotation axis of the first prism support 200. The second rotating mechanism comprises at least two second guide members arranged along a first direction. The center connecting line of the plurality of second guide members is parallel to the first direction, and the center connecting line of the plurality of second guide members is the rotation axis of the second prism support 400.

[0041] As Figure 3As shown in FIG. 4, in an embodiment, the first rotating mechanism 220 comprises two first guides, which are first balls 221. The bottom of the first prism support 200 is provided with a first positioning groove 222 cooperating with one of the first balls 221 and a first limiting groove 223 cooperating with the other first ball 221. The first positioning groove 222 is one of a tapered groove, a multi-surface groove, a V-shaped groove and a square groove, so that the first ball 221 can only rotate at a fixed point in the first positioning groove 222. It can be understood that the first ball 221 only rotates around its center in the first positioning groove 222 and cannot slide, thereby ensuring that the position of the first ball 221 and the first positioning groove 222 is relatively fixed. The purpose of the first positioning groove 222 is to cooperate with the first ball 221 to ensure the installation position of the first prism support 200, reduce unnecessary movement, and only retain the required degrees of freedom to improve the movement accuracy. Figure 4 The first positioning groove 222 shown in FIG. 4 is a multi-surface groove structure, which comprises three inclined surfaces cooperating with the first ball 221, which is equivalent to three-point contact, can reduce the contact area and facilitate the movement of the first ball 221. When the first positioning groove 222 is a tapered groove, the contact area with the first ball 221 is equivalent to a circular line contact. When the first positioning groove 222 is a V-shaped groove, the two sides of the length direction of the V-shaped groove need to abut against the first ball 221, thereby avoiding the movement of the first ball 221 in the length direction of the V-shaped groove. When the first positioning groove 222 is a square groove, the four edges or surfaces of the square groove abut against the first ball 221 to limit the movement of the first ball 221.

[0042] The first limiting groove 223 is a V-shaped groove, and the length direction of the V-shaped groove is parallel to the third direction; the first limiting groove 223 can facilitate the quick installation of the first prism bracket 200; the top of the second prism bracket 400 is provided with a first clamping groove 224 that cooperates with the first guide member, and the first clamping groove 224 is one of a conical groove, a multi-faceted groove, a V-shaped groove, and a square groove, so that the first ball 221 can only rotate at a fixed point in the first clamping groove 224; similarly, the purpose of the first clamping groove 224 is to ensure the installation position of the first ball 221, so that the first ball 221 can be clamped in a fixed position and can only rotate on its own. The first clamping groove 224 is set upward to facilitate the first ball 22 1, when the first ball 221 cooperates with the first positioning groove 222, the installation and positioning of the first prism bracket 200 can be quickly completed; the first limiting groove 223 is set as a V-shaped groove, and the length direction of the V-shaped groove is parallel to the third direction, and the length of the V-shaped groove is greater than the diameter of the first ball 221, so that when the first prism bracket 200 is installed, it is only necessary to align one first ball 221 to complete the positioning and installation, reducing the difficulty of installation; in another embodiment, one of the first locking grooves 224 can be set as a V-shaped groove arranged opposite to the first limiting groove 223. When one of the first balls 221 is positioned, the installation accuracy of the first prism bracket 200 can also be guaranteed and it can be rotated around the Z axis;

[0043] like Figure 3 As shown in / 5, in one embodiment, the second rotating mechanism 410 includes a second guide member; the second guide member is a second ball 411; the bottom of the second prism bracket 400 is provided with a second positioning groove 412 that cooperates with one of the first balls 221, and a second limiting groove 413 that cooperates with the other first ball 221; the second positioning groove 412 is one of a tapered groove, a multi-faceted groove, a V-shaped groove, and a square groove, so that the second ball 411 can only rotate at a fixed point in the second positioning groove 412; the working principle of the second positioning groove 412 is the same as that of the first positioning groove 222; the second limiting groove 413 is a V-shaped groove, The length direction of the V-shaped groove is parallel to the first direction, and the length of the V-shaped groove is greater than the diameter of the second ball 411; a second retaining groove 414 is provided in the base 100 to cooperate with the first guide member; the second retaining groove 414 is one of a tapered groove, a multi-faceted groove, a V-shaped groove, and a square groove, so that the second ball 411 can only rotate at a fixed point in the second retaining groove 414; the working principle of the second retaining groove 414 is the same as that of the first retaining groove 224; the two second balls 411 are arranged on both sides of the second prism bracket 400, and the distance between the second balls 411 is relatively large, thereby improving the accuracy and stability of rotation in the X direction;

[0044] In an embodiment, the first rotating mechanism 220 comprises two first guides, one of which is a first ball 221, and the other of which is a cylindrical shaft arranged in parallel with the third direction in the length direction; the second rotating mechanism 410 comprises two second guides, one of which is a second ball 411, and the other of which is a cylindrical shaft arranged in parallel with the first direction in the length direction; (not shown in the figure)

[0045] In an embodiment, the first rotating mechanism 220 comprises two first guides, one of which is a semicircular protrusion arranged on the top of the second prism support 400, and the other of which is a semicylindrical protrusion arranged on the top of the second prism support 400 in parallel with the third direction in the length direction; that is, the first guide and the second prism support 400 form an integrated structure; the second rotating mechanism 410 comprises two second guides, one of which is a semicircular protrusion arranged on the base 100, and the other of which is a semicylindrical protrusion arranged on the base 100 in parallel with the first direction in the length direction; that is, the second guide and the base 100 form an integrated structure; (not shown in the figure)

[0046] In an embodiment, the two first balls 221 are arranged in a spaced manner; the second prism support 400 is provided with a magnetic conducting sheet 226 located between the two first balls 221; the first prism support 200 is provided with a reinforcing magnet 225 matched with the magnetic conducting sheet 226, so that the first prism support 200 can continuously and effectively abut on the two first balls 221, and the stability of the cooperation between the first prism support 200 and the second prism support 400 is enhanced.

[0047] In an embodiment, when the high-precision two-axis rotating motor architecture is used for a periscopic camera module, the base 100 is further provided with a lens module 600 in the accommodating space 101; the top of the base 100 is provided with a top cover 110, so as to form a complete periscopic camera module; the top cover 110 is provided with a light inlet hole 111 opposite to the prism 210, light enters the prism 210 through the light inlet hole 111, and is reflected by the prism 210 to enter the lens module 600 along the Z direction.

[0048] The above description is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent transformation or direct or indirect application in the related technical field based on the content of the present application and the drawings is also included in the patent protection range of the present application.

Claims

1. A high-precision two-axis rotary motor architecture, characterized in that: include: Base (100); a first prism bracket (200) for fixedly connecting to a prism (210), wherein the prism (210) is used to adjust light incident along a second direction to be transmitted along a third direction, the third direction being perpendicular to the second direction; a first driving unit (300) for driving the first prism bracket (200) to rotate relative to the base (100) around the third direction; A second prism support (400), used for supporting the first prism support (200); a second driving unit (500) for driving the second prism bracket (400) to rotate relative to the base (100) about a first direction, the first direction being perpendicular to the second direction and perpendicular to the third direction; The first prism bracket (200) is rotationally connected to the second prism bracket (400) via a first rotation mechanism (220); and the second prism bracket (400) is rotationally connected to the base (100) via a second rotation mechanism (410).

2. The high-precision dual-axis rotary motor architecture according to claim 1, characterized in that: The first driving unit (300) comprises a first coil (310) and a first magnet (320) arranged relative to each other in a third direction; the first coil (310) is arranged on a base (100); and the first magnet (320) is arranged on a first prism bracket (200).

3. The high-precision dual-axis rotary motor architecture according to claim 1, characterized in that: The second driving unit (500) comprises a second coil (510) and a second magnet (520) arranged relative to each other in a second direction; the second coil (510) is arranged on the base (100); and the second magnet (520) is arranged on the second prism bracket (400).

4. The high-precision dual-axis rotary motor architecture according to claim 1, characterized in that: The first rotating mechanism (220) includes at least two first guide members arranged along a third direction; the second rotating mechanism (410) includes at least two second guide members arranged along a first direction.

5. The high-precision dual-axis rotary motor architecture according to claim 4, characterized in that: The first rotating mechanism (220) comprises two first guide members; the first guide member is a first ball (221); the bottom of the first prism bracket (200) is provided with a first positioning groove (222) cooperating with one of the first balls (221), and a first limiting groove (223) cooperating with the other first ball (221); the first positioning groove (222) is one of a tapered groove, a multifaceted groove, and a V-shaped groove, so that the first ball (221) can only rotate at a fixed point in the first positioning groove (222); the first limiting groove (223) is a V-shaped groove, and the length direction of the V-shaped groove is parallel to the third direction; the top of the second prism bracket (400) is provided with a first clamping groove (224) cooperating with the first guide member, the first clamping groove (224) is one of a tapered groove, a multifaceted groove, and a V-shaped groove, so that the first ball (221) can only rotate at a fixed point in the first clamping groove (224).

6. The high-precision dual-axis rotary motor architecture according to claim 4, characterized in that: The second rotating mechanism (410) comprises two second guide members; the second guide member is a second ball (411); the bottom of the second prism bracket (400) is provided with a second positioning groove (412) cooperating with one of the first balls (221), and a second limiting groove (413) cooperating with the other first ball (221); the second positioning groove (412) is one of a tapered groove, a multifaceted groove, and a V-shaped groove, so that the second ball (411) can only rotate at a fixed point in the second positioning groove (412); the second limiting groove (413) is a V-shaped groove, and the length direction of the V-shaped groove is parallel to the first direction; the base (100) is provided with a second clamping groove (414) cooperating with the first guide member, and the second clamping groove (414) is one of a tapered groove, a multifaceted groove, and a V-shaped groove, so that the second ball (411) can only rotate at a fixed point in the second clamping groove (414).

7. The high-precision dual-axis rotary motor architecture according to claim 4, characterized in that: The first rotating mechanism (220) includes two first guide members, one of which is a first ball (221), and the other first guide member is a cylindrical shaft arranged with a length direction parallel to the third direction; the second rotating mechanism (410) includes two second guide members, one of which is a second ball (411), and the other second guide member is a cylindrical shaft arranged with a length direction parallel to the first direction.

8. The high-precision dual-axis rotary motor architecture according to claim 4, characterized in that: The first rotating mechanism (220) comprises two first guide members, one of which is a semicircular protrusion provided on the top of the second prism bracket (400), and the other first guide member is a semi-cylindrical protrusion provided on the top of the second prism bracket (400), the length direction of which is parallel to the third direction; the second rotating mechanism (410) comprises two second guide members, one of which is a semicircular protrusion provided on the base (100), and the other second guide member is a semi-cylindrical protrusion provided on the base (100), the length direction of which is parallel to the first direction.

9. The high-precision dual-axis rotary motor architecture according to claim 5, characterized in that: The two first rolling balls (221) are arranged at intervals; the second prism bracket (400) is provided with a magnetic conductive sheet (226) located between the two first rolling balls (221); and the bottom of the first prism bracket (200) is provided with a reinforcing magnet (225) that cooperates with the magnetic conductive sheet (226).

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