CN221039574U - Driving structure and projection equipment - Google Patents

Abstract

The application provides a driving structure and projection equipment, and relates to the technical field of optical equipment. The driving structure can reduce the movement amplitude of the optical element carried by the driving structure and reduce the noise generated by the driving structure. The driving structure comprises a base body, a bearing piece and a driving assembly; wherein, the bearing piece is arranged on the basal body, and the bearing piece can be provided with an optical element; the driving component is arranged between the base body and the bearing piece, and the bearing piece can move relative to the base body under the driving of the driving component so as to drive the optical element arranged on the bearing piece to move. The driving structure is used for driving the optical element arranged on the driving structure to move.

Description

Driving structure and projection equipment

Technical Field

The present application relates to the field of optical devices, and in particular, to a driving structure and a projection device.

Background

A galvanometer is generally provided in a projection apparatus, and the high-frequency reciprocation of the galvanometer can improve the picture quality of a projection picture generated by the projection apparatus. In the related art, in order to make the transmission path of the light after passing through the optical element on the galvanometer satisfy the use requirement, the amplitude of the optical element is large and a large noise is generated during the movement of the optical element in the galvanometer.

Disclosure of utility model

The application provides a driving structure and projection equipment, which can reduce the movement amplitude of an optical element carried by the driving structure and reduce noise generated by the driving structure.

In one aspect, the present application provides a driving structure comprising: a base, a carrier, and a drive assembly; the bearing piece is provided with a connecting part and at least two bearing parts, the connecting part is elastic and can generate deformation, the bearing piece is arranged on the base body through the connecting part, and the bearing part is used for arranging the optical element; the driving assembly is arranged between the base body and the bearing piece, and the bearing piece can move relative to the base body through the connecting part under the driving of the driving assembly so as to drive at least two optical elements arranged on the bearing part to move.

According to the driving structure, the matrix is arranged, so that other parts in the driving structure can be installed and borne through the matrix; the bearing piece is provided with a structure form comprising an elastic connecting part and at least two bearing parts, on one hand, the bearing piece can be elastically deformed through the elastic connecting part, so that the bearing part on the bearing piece can generate required movement through the connecting part; on the other hand, at least two bearing parts are arranged on the bearing piece, and at least two optical elements can be arranged on the bearing piece, so that the at least two optical elements can be driven to generate required movement; meanwhile, a driving assembly is arranged between the base body and the bearing piece, and the driving assembly can be used for providing power for the bearing part on the bearing piece so that the bearing part can drive at least two borne optical elements to move.

Compared with the structure that only one optical element can be arranged in the driving structure in the related art, the driving structure provided by the application can be used for arranging at least two optical elements on the bearing piece, so that light rays can be refracted at least twice through the at least two optical elements in sequence in the moving process of the at least two optical elements, and the larger change of the transmission path of the light rays can be realized. When the change range of the light transmission path is determined, the change amount of the light transmission path can meet the use requirement when the optical element carried on the carrier moves with smaller movement amplitude, and the movement amplitude of the carrier and the driving assembly can be reduced, so that noise generated by the driving structure can be reduced.

In one possible implementation manner of the present application, the driving structure provided in the embodiment of the present application includes two carriers, each having a carrying portion thereon, where the two carriers are located on two sides of the base in a thickness direction of the base, respectively.

In one possible implementation of the present application, the carrier includes a carrier body, and a center position of the carrier body has a through hole for avoiding; the bearing part comprises a stop piece formed by extending from the edge of the bearing body, and the stop piece is formed by extending along the thickness direction of the bearing body.

In one possible implementation of the present application, the carrier includes a carrier body, and a center position of the carrier body has a through hole for avoiding; the bearing part comprises a first fixing piece and a second fixing piece, the first fixing piece and the second fixing piece are formed by extending from the edge on the bearing body in the thickness direction of the bearing body, and the second fixing piece is located at a position farther from the bearing body than the first fixing piece; after one optical element is placed on the first stator and the other optical element is placed on the second stator, there is a gap between the two optical elements.

In one possible implementation of the application, the carrier comprises a carrier body; the connecting part comprises a deformation part and a fixing part, the deformation part is formed by extending from the edge of the bearing body and has elasticity, the fixing part is connected with the deformation part, and the bearing piece is fixed on the base body through the fixing part.

In one possible implementation of the present application, the deformation portion includes a straight cantilever extending from an edge of the bearing body, and the fixing portion is connected to an end of the straight cantilever away from the bearing body.

In one possible implementation manner of the application, the deformation part comprises at least two cantilever sections which are sequentially connected, one cantilever section of the at least two cantilever sections extends from the edge of the bearing body to form, and the extending directions of the two connected cantilever sections are different; the fixing part is connected with the cantilever section far away from the bearing body in the at least two cantilever sections.

In one possible implementation manner of the present application, the connecting portion further includes a bending section, the fixing portion includes a fixing piece, the fixing piece is connected with the deformation portion through the bending section, and an extending direction of the bending section has an included angle with a plane where the deformation portion is located, so that the fixing piece and the deformation portion are located in different planes.

In one possible implementation of the application, the drive assembly includes a base magnetic member disposed on the base and a carrier magnetic member fixed to the carrier at a position corresponding to the base magnetic member.

In one possible implementation of the present application, the base magnetic member includes a first magnetic member and a second magnetic member, the first magnetic member and the second magnetic member are disposed on the base at an included angle, and the carrier magnetic member includes two groups of third magnetic members and two groups of fourth magnetic members; wherein, along the thickness direction of the basal body, two groups of third magnetic pieces are respectively positioned at two sides of the basal body, and two groups of fourth magnetic pieces are respectively positioned at two sides of the basal body; one group of third magnetic pieces and one group of fourth magnetic pieces are connected with one bearing piece of the two bearing pieces, and the other group of third magnetic pieces and the other group of fourth magnetic pieces are connected with the other bearing piece of the two bearing pieces; and two groups of third magnetic pieces are arranged corresponding to the first magnetic pieces, and two groups of fourth magnetic pieces are arranged corresponding to the second magnetic pieces.

In another aspect, the present application provides a projection apparatus, comprising: the optical element is fixed on a bearing part in the driving structure, and the driving structure is arranged between the optical machine component and the lens component.

The projection device provided by the application has the same technical effect as the projection device comprising the driving structure of any one of the above, namely, the movement amplitude of the optical element carried by the driving structure can be reduced, and the noise generated by the driving structure can be reduced.

Drawings

FIG. 1 is an exploded view of a drive structure provided by the present application;

FIG. 2 is a schematic diagram of a driving structure according to the present application;

FIG. 3 is a schematic view of a carrier in a driving structure according to the present application;

FIG. 4 is a schematic diagram of a carrier and an optical element in a driving structure according to the present application;

FIG. 5 is a schematic view of a carrier in a driving structure according to the present application;

FIG. 6 is a schematic view of a carrier in a driving structure according to the present application;

FIG. 7 is a schematic view of a carrier in a driving structure according to the present application;

FIG. 8 is a partially enlarged schematic illustration of portion B of FIG. 3 in accordance with the present application;

FIG. 9 is an exploded view of a drive structure provided by the present application;

FIG. 10 is a schematic view of a carrier in a driving member according to the present application;

Fig. 11 is a schematic structural diagram of a driving structure provided by the present application.

Reference numerals illustrate:

1-a substrate; 11-driving through holes; 12-accommodating through holes; 13-fixing holes; 2-a carrier; 21-a carrier body; 211-avoiding the through hole; 212-a carrier; 2121-stop tab; 2122-a bearing piece; 2123-a first anchor tab; 2124-a second anchor tab; 213-mounting portion; 22-connecting part; 221-deformation portion; 2211-cantilever segment; 222-a fixing part; 223-bending section; 3-a drive assembly; 31-a base magnetic member; 311-first magnetic member; 312-a second magnetic member; 32-carrying a magnetic member; 321-a third magnetic member; 322-fourth magnetic member; 4-an optical element; a-a first inversion axis; b-thickness direction; c-a second flip axis.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the specific technical solutions of the present application will be described in further detail below with reference to the accompanying drawings in the embodiments of the present application. The following examples are illustrative of the application and are not intended to limit the scope of the application.

In embodiments of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

Furthermore, in the embodiments of the present application, the terms "upper," "lower," "left," and "right," etc., are defined with respect to the orientation in which the components in the drawings are schematically disposed, and it should be understood that these directional terms are relative terms, which are used for descriptive and clarity with respect to each other, and which may vary accordingly with respect to the orientation in which the components in the drawings are disposed.

In embodiments of the present application, unless explicitly specified and limited otherwise, the term "connected" is to be construed broadly, and for example, "connected" may be either a fixed connection, a removable connection, or an integral unit; can be directly connected or indirectly connected through an intermediate medium.

In embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In embodiments of the application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment of the present application is not to be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

The embodiment of the application provides a projection device, which has the working principle that light is irradiated onto a display element of an image so as to generate an image, and then the image is projected through a lens. Before the projection of the image generated by the display element, the light can be processed, and the optical element for processing the light needs to generate motion, and the processing of the light is completed in the process that the optical element moves according to a preset path, so as to form a projection picture finally projected by the lens.

In some embodiments of the present application, referring to fig. 1, fig. 1 shows an exploded view of a drive structure provided by the present application. The projection device provided by the embodiment of the application comprises: an optical-mechanical assembly, a lens assembly, an optical element 4 and a driving structure; the optical-mechanical component is used for generating projection light; the lens component is used for enabling the projection light to form a projection picture with a required size; the optical element 4 may be an optical lens, the optical element 4 is disposed on a bearing part in the driving structure, the driving structure is disposed between the optical machine component and the lens component, that is, the driving structure is disposed on a path of transmitting the projection light generated by the optical machine component to the lens component, the driving structure drives the optical element 4 carried by the driving structure to move so as to process the projection light, and the processed projection light forms a projection picture projected onto the curtain after passing through the lens component.

Meanwhile, for convenience of description, the embodiment of the present application uses a projection device as an example, and describes the driving structure provided by the embodiment of the present application, but the driving structure is not limited to be applied to the projection device, and the driving structure provided by the embodiment of the present application may be applied to any required optical device.

Referring to fig. 2 and 3, fig. 2 shows a schematic structural view of a base in a driving structure provided by the present application, and fig. 3 shows a schematic structural view of a carrier in a driving structure provided by the present application. As shown in fig. 1, 2 and 3, the driving structure provided in the embodiment of the present application includes: a base 1, a carrier 2 and a drive assembly 3; wherein the carrier 2 has a connection portion 22 and at least two carrier portions 212, the connection portion 22 has elasticity and can generate deformation, the carrier 2 is arranged on the base 1 through the connection portion 22, and the carrier portions 212 are used for arranging the optical element 4; the driving component 3 is disposed between the base 1 and the carrier 2, and the carrier 2 can move relative to the base 1 through the connection portion 22 under the driving of the driving component 3, so as to drive at least two optical elements 4 disposed on the carrier portion 212 to move.

The base 1 in the embodiment of the present application is used for mounting and carrying other parts in the driving structure, as shown in fig. 2, the base 1 may be configured as a plate-like structure, and the receiving through hole 12 may be provided at the center of the base 1. The shape of the accommodating through hole 12 may be set according to the shape of the optical element 4, and the accommodating through hole 12 may be set to fit the shape of the optical element 4, and a part of the optical element 4 may be accommodated in the accommodating through hole 12. It is also possible to provide fixing holes 13 on the base 1, the positions of the fixing holes 13 corresponding to the positions of the carriers 2, so that the carriers 2 are fixedly mounted on the base 1 through the fixing holes 13. It is also possible to provide a driving through hole 11 on the base 1, which is adapted to the driving piece in the driving assembly 3, according to the position of the driving assembly 3 on the base 1, so as to provide the driving piece in the driving through hole 11.

The carrier 2 in the embodiment of the present application is used for mounting and carrying the optical element 4, and the carrier 2 can drive the optical element 4 to move under the driving of the driving assembly 3, and the carrier 2 needs to be fixedly mounted on the base 1. The carrier 2 may be provided in a sheet-like structure, and for example, the carrier 2 may be made of a material having both a certain strength and rigidity, a relatively high toughness and a certain elasticity, such as stainless steel.

For example, the connecting portion 22 may be provided on the carrier 2, where the connecting portion 22 has elasticity, and the connecting portion 22 may deform under the action of external force, and the connecting portion 22 may return to the original shape when the external force is lost. Through holes corresponding to the fixing holes 13 on the base 1 may be provided on the connection portion 22 to place the connection portion 22 at a position corresponding to the fixing holes 13 on the base 1 using fasteners such as screws or rivets; alternatively, an adhesive means, such as an adhesive glue applied between the connection 22 and the base body 1, may be used to fix the carrier 2 to the base body 1 via the connection 22.

As a further example, at least two carrier parts 212 may be provided on the carrier 2, the structural shape of the carrier parts 212 being adapted to the structural shape of the optical element 4, the optical element 4 being fixedly mounted on the carrier 2 by means of the carrier parts 212.

The driving component 3 in the embodiment of the present application may be configured to include a plurality of driving members, where the plurality of driving members are respectively disposed at corresponding positions on the base 1 and the carrier 2, so that the carrier 2 is driven to move relative to the base 1 through the connection portion 22 by interaction of the plurality of driving members, and each optical element 4 disposed on at least two carrier portions 212 may be driven to move together during the movement of the carrier 2.

According to the driving structure provided by the embodiment of the application, as the base body 1 is arranged, other parts in the driving structure can be installed and borne through the base body 1; and the carrier 2 is provided in a structure comprising a connecting part 22 with elasticity and at least two carrier parts 212, on the one hand, the carrier 2 can be elastically deformed by the connecting part 22 with elasticity, so that the carrier parts 212 on the carrier 2 can generate the required movement by the connecting part 22; on the other hand, at least two carrying parts 212 are arranged on the carrying part 2, and at least two optical elements 4 can be arranged on the carrying part 2, so that the at least two optical elements 4 can be driven to generate required movement; meanwhile, a driving component 3 is arranged between the base 1 and the carrier 2, and the driving component 3 can provide power for the carrier 212 on the carrier 2, so that the carrier 212 can drive the at least two carried optical elements 4 to move.

Compared with the structure that only one optical element 4 can be arranged in the driving structure in the related art, the driving structure provided by the embodiment of the application can be provided with at least two optical elements 4 on the carrier 2, so that light rays can sequentially pass through at least two refractions of the at least two optical elements 4 in the moving process of the at least two optical elements 4, and the larger change of the transmission path of the light rays can be realized. When the range of change of the light transmission path is determined, the amount of change of the light transmission path can be made to satisfy the use requirement when the optical element 4 carried on the carrier 2 is moved with a small movement amplitude, and the movement amplitude of the carrier 2 and the driving assembly 3 can be reduced, so that noise generated by the driving structure can be reduced.

In some possible implementations, the driving structure provided in the embodiment of the present application includes two carriers 2, each carrier 2 having one carrier portion 212 thereon, and the two carriers 2 are located on two sides of the base 1 in the thickness direction B of the base 1, respectively.

In the embodiment of the present application, as shown in fig. 1, two carriers 2 may be provided in the driving structure, the two carriers 2 being provided on both sides of the base 1 in the thickness direction B of the base 1, respectively. One carrier 212 may be provided on each carrier 2.

In the above embodiment, since two carriers 2 are provided in the driving structure and one carrier 212 is provided on each carrier 2, two optical elements 4 can be mounted on the driving structure by the two carriers 212; and in the thickness direction B of the base 1, two carriers 2 are respectively arranged at two sides of the base 1, so that the optical element 4 carried on the carrier 212 can be accommodated in the accommodating through hole 12 on the base 1, thereby reducing the overall thickness of the driving structure and being beneficial to reducing the volume of the driving structure.

In some possible implementations, referring to fig. 4, fig. 4 shows a schematic structural diagram of a carrier and an optical element carried in the driving structure provided by the present application. As shown in fig. 3 and 4, the carrier 2 may be provided in a structure including a carrier body 21, and the carrier body 21 has a through hole 211 formed at a center thereof; the bearing portion 212 includes a stopper piece 2121 formed extending from an edge of the bearing body 21, the stopper piece 2121 being formed extending in a thickness direction B of the bearing body 21.

In the embodiment of the present application, the bearing body 21 of the bearing member 2 may be provided with a ring-shaped sheet structure, that is, the center position of the bearing body 21 is provided with the avoiding through hole 211, and the shape and size of the avoiding through hole 211 may be designed according to the shape and size of the optical element 4 to be borne. For example, the relief through hole 211 is provided as an approximately rectangular through hole.

In the embodiment of the present application, the bearing portion 212 on the bearing 2 may be provided in a structure form including the stopper piece 2121 formed extending from the edge of the bearing body 21, wherein the stopper piece 2121 extends in the thickness direction B of the bearing body 21.

For example, as shown in fig. 3 and 4, a plurality of stopper pieces 2121 may be formed to extend from an edge of the side of the carrier body 21 where the escape through hole 211 is provided. For example, two stopper pieces 2121 are formed to extend along the hole edge on each side of the rectangular escape through hole 211, and the length of the stopper piece 2121 matches the thickness of the optical element 4. The optical element 4 may be positioned in the avoidance hole 211, and the side wall of the optical element 4 may be adhered to and fixed to the stopper 2121, or the side wall of the optical element 4 may be clamped to the stopper 2121, that is, the optical element 4 may be clamped to the stopper 2121, so as to fix the optical element 4 to the bearing portion 212 on the carrier 2.

As another example, a portion of the carrier body 21 surrounding the avoidance hole 211 may be used as the carrier portion 212, that is, a portion of the carrier body 21 surrounded by a dashed frame in fig. 3, and this portion may be used as the holding piece 2122 in the carrier portion 212. In the radial direction of the avoiding through hole 211, the holding sheet 2122 is smaller than the optical element 4, and then one side surface of the optical element 4 may be abutted against the holding sheet 2122, or an adhesive may be applied between the holding sheet 2122 and the optical element 4, so as to increase the adhesive strength between the optical element 4 and the carrier 2.

In the above embodiment, since the avoidance through hole 211 is provided on the bearing body 21 on the bearing member 2, the optical element 4 can be located in the avoidance through hole 211; and the hole of the through hole 211 on the bearing body 21 extends upwards to form a stop sheet 2121, and an installation point can be provided for the optical element 4 through the stop sheet 2121, so that the optical element 4 is fixedly connected with the stop sheet 2121, and the optical element 4 is fixedly installed on the bearing part 212 on the bearing piece 2.

In some possible implementations, referring to fig. 5 and 6, fig. 5 and 6 each show a schematic structural view of a carrier in a driving structure provided by the present application. It is also possible to provide one carrier 2 in the driving structure provided in the embodiment of the present application, and the one carrier 2 is provided in a structure form including a carrier body 21, where a center position of the carrier body 21 has a avoidance through hole 211; the bearing portion 212 includes a first fixing piece 2123 and a second fixing piece 2124, both of the first fixing piece 2123 and the second fixing piece 2124 being formed extending from an edge on the bearing body 21 in a thickness direction B of the bearing body 21, and the second fixing piece 2124 being located farther from the bearing body 21 than the first fixing piece 2123; after one optical element 4 is disposed on the first fixing piece 2123 and the other optical element 4 is disposed on the second fixing piece 2124, there is a gap between the two optical elements 4.

In the embodiment of the present application, one carrier 2 may be disposed in the driving structure, and the carrier portion 212 capable of carrying two optical elements 4 may be disposed on the one carrier 2, that is, two carrier portions 212 may be disposed on the one carrier 2, and the two carrier portions 212 form two fixing points to mount two optical elements 4 on the one carrier 2.

In the embodiment of the present application, the bearing body 21 of the bearing member 2 may be provided in an annular sheet structure, and the avoidance through hole 211 having a nearly rectangular shape is formed at the center position of the bearing body 21. The bearing portion 212 of the bearing 2 may be configured to include a first fixing piece 2123 and a second fixing piece 2124, wherein the first fixing piece 2123 and the second fixing piece 2124 extend from edges of the avoiding through hole 211 of the bearing body 21 along the thickness direction B of the bearing body 21.

For example, as shown in fig. 5, a first fixing piece 2123 and a second fixing piece 2124 may be sequentially connected to each other by extending a hole edge of the receiving body 21 to avoid the through hole 211. Wherein, in the thickness direction B of the carrier body 21, the first fixing plate 2123 extends upward from a hole of the carrier body 21 that is away from the through hole 211, and the second fixing plate 2124 extends in the thickness direction B of the carrier body 21 from an end of the first fixing plate 2123 that is away from the carrier body 21. A protrusion may be formed between the second fixing piece 2124 and the first fixing piece 2123 to extend in a direction approaching the center of the avoidance hole 211 so as to isolate the second fixing piece 2124 and the first fixing piece 2123 in the thickness direction B of the carrier body 21 by the protrusion. In this way, the second fixing piece 2124 is located farther from the carrying body 21 than the first fixing piece 2123. The side wall of one optical element 4 may be bonded to the first anchor sheet 2123 to bond one optical element 4 to the first anchor sheet 2123; the side wall of the other optical element 4 may be bonded to the second anchor sheet 2124 to bond the other optical element 4 to the second anchor sheet 2124. The distance between the two optical elements 4 may be determined by the protrusion between the first fixing plate 2123 and the second fixing plate 2124.

As another example, as shown in fig. 6, two sets of fixing pieces including the first fixing piece 2123 and the second fixing piece 2124 may be formed to extend upward along the hole edge of the avoidance hole 211 on the carrying body 21, and the lengths of the two sets of fixing pieces are not uniform in the thickness direction B of the carrying body 21. For example, by providing the first fixing piece 2123 in a short sheet-like structure, the length of the first fixing piece 2123 is adapted to the thickness of one optical element 4, and the side wall of one optical element 4 can be adhesively fixed to the first fixing piece 2123. The second fixing piece 2124 is provided in a longer sheet structure, the length of the second fixing piece 2124 may be equal to the sum of the thickness of the two optical elements 4 and the interval between the two optical elements 4, and the side wall of the other optical element 4 may be adhered and fixed to the end of the second fixing piece 2124 away from the carrying body 21, so that a certain gap may be provided between the two optical elements 4.

In the above embodiment, since the avoidance through hole 211 is provided on the bearing body 21 on the bearing member 2, the optical element 4 can be located in the avoidance through hole 211; and the hole edge of the avoidance through hole 211 on the bearing body 21 extends upwards to form a first fixing piece 2123 and a second fixing piece 2124 serving as the bearing part 212, two mounting points can be provided through the first fixing piece 2123 and the second fixing piece 2124, so that one optical element 4 can be fixedly arranged on the first fixing piece 2123, and the other optical element 4 is fixedly arranged on the second fixing piece 2124, and further the two optical elements 4 can be driven to synchronously move through the one bearing piece 2.

In some possible implementations, as shown in fig. 3, the carrier 2 may be provided in a form comprising a carrier body 21; the connecting portion 22 on the carrier 2 is provided in a structure form including a deformation portion 221 and a fixing portion 222, wherein the deformation portion 221 is formed extending from the edge of the carrier body 21 and has elasticity, the fixing portion 222 is connected with the deformation portion 221, and the carrier 2 is fixed on the base 1 by the fixing portion 222.

In the embodiment of the present application, the connection portion 22 may be formed to extend on the bearing body 21 on the bearing 2, and the connection portion 22 may be provided in a structure form including the deformation portion 221 and the fixing portion 222.

For example, a connection 22 may be formed to extend at two opposite corners of the approximately rectangular carrier body 21. In the plane where the bearing body 21 is located, the deformation portion 221 in the connection portion 22 extends from the edge of the bearing body 21 to a direction away from the avoidance through hole 211 on the bearing body 21, so that the deformation portion 221 can be set to be in a sheet strip-shaped structure, and the deformation portion 221 can have good elasticity, and the deformation portion 221 can be elastically deformed. The fixing portion 222 is disposed at an end of the deformation portion 221 away from the carrier body 21, that is, the fixing portion 222 is formed to extend from an end of the deformation portion 221 away from the carrier body 21, so that the fixing portion 222 can be used as a structure for connecting the carrier 2 with the base 1, and the fixing portion 222 is fixed on the base 1 to fix the carrier 2 on the base 1.

In the above embodiment, since the connecting portion 22 is formed to extend on the carrier body 21 of the carrier 2, and the connecting portion 22 is provided in a structure form including the deformed portion 221 and the fixing portion 222 connected, the fixing portion 222 may be used as a structure connected with the base 1 to fix the carrier 2 to the base 1 through the fixing portion 222; and the deformation part 221 is provided with an elastic structure, and the deformation part 221 can elastically deform, so that the bearing body 21 can move through the deformation part 221.

In some possible implementations, referring to fig. 7, fig. 7 shows a schematic structural diagram of a carrier in a driving structure provided by the present application. The deformation portion 221 of the connection portion 22 of the carrier 2 may be configured to include a straight cantilever formed by extending from the edge of the carrier body 21, and the fixing portion 222 is connected to an end of the straight cantilever away from the carrier body 21.

In the embodiment of the present application, the deformation portion 221 may be configured as a straight cantilever in a linear shape or a long sheet shape that is approximately linear, the straight cantilever extends from the edge of the carrying body 21, and the straight cantilever and the carrying body 21 are located in the same plane. The fixing portion 222 may be a sheet-like structure formed to extend from an end of the straight cantilever away from the carrier body 21.

In the above embodiment, since the deformation portion 221 on the carrier 2 is provided in the form of a straight cantilever, not only can the carrier body 21 be moved by the elastic deformation of the straight cantilever, but also the deformation portion 221 can be easily processed.

In some possible implementations, referring to fig. 8, fig. 8 shows a schematic enlarged view of part C of fig. 3 provided by the present application. As shown in fig. 8, the deformation portion 221 on the carrier 2 may be configured to include at least two sequentially connected cantilever segments 2211, one cantilever segment 2211 of the at least two cantilever segments 2211 is formed by extending from the edge of the carrier body 21, and the extending directions of the two connected cantilever segments 2211 are different; the fixing portion 222 is connected to a cantilever segment 2211 far from the bearing body 21 of the at least two cantilever segments 2211.

In the embodiment of the present application, the deformation portion 221 on the carrier 2 may be provided in a structure form of bending extension, for example, the deformation portion 221 may be provided in a structure form of approximately S-shape. That is, the deformation portion 221 includes at least two sequentially connected cantilever segments 2211, each cantilever segment 2211 extends in a different direction, and the fixing portion 222 is disposed at an end of a segment 2211 away from the carrier body 21.

For example, the deformation portion 221 may be configured to include a three-section cantilever section 2211, wherein the first section cantilever section 2211 is formed by extending from a side edge of the carrying body 21 away from the avoidance hole 211, for example, the first section cantilever section 2211 is formed by extending along a first direction; the second cantilever segment 2211 extends from the end of the first cantilever segment 2211 far from the bearing body 21 along a second direction, which may be a direction parallel to and opposite to the first direction; the third cantilever 2211 extends from an end of the second cantilever 2211 far from the bearing body 21 along the first direction, and the fixing portion 222 is disposed on the end of the third cantilever 2211 far from the bearing body 21.

In the above embodiment, since the deformation portion 221 on the carrier 2 is configured to include at least two cantilever segments 2211 that are sequentially connected, the length of the deformation portion 221 can be increased, and on one hand, the deformation portion 221 can be deformed greatly; on the other hand, in the case where the movement amplitude of the carrier body 21 is determined, the amount of change in the elastic deformation generated by each of the cantilever segments 2211 in the deformation portion 221 can be reduced, and thus the risk of fatigue fracture generated by the deformation portion 221 can be reduced, so that the service life of the carrier 2 can be prolonged.

In some possible implementations, as shown in fig. 8, the connecting portion 22 on the carrier 2 further includes a bending section 223, the fixing portion 222 includes a fixing piece, the fixing piece is connected to the deformation portion 221 through the bending section 223, and an extending direction of the bending section 223 forms an included angle with a plane of the deformation portion 221, so that the fixing piece and the deformation portion 221 are located in different planes.

In the embodiment of the present application, in order to make a certain distance between the bearing body 21 and the base 1 on the bearing 2, a bending section 223 may be provided in the connection portion 22 on the bearing 2.

The fixing portion 222 of the connecting portion 22 is in a sheet-like structure, the deformation portion 221 and the fixing sheet are connected by a bending portion 223, and an angle is formed between an extending direction of the bending portion 223 and a plane of the deformation portion 221, for example, the bending portion 223 extends along a thickness direction B of the supporting body 21, that is, the bending portion 223 is perpendicular to the deformation portion 221. The fixing piece is disposed at an end of the bending section 223 remote from the deformation portion 221. The fixing piece and the deformation 221 may be located in different planes, respectively, by the bending section 223. The distance between the fixing piece and the deformation portion 221 can be adjusted by adjusting the length of the bending section 223 in the thickness direction B of the bearing body 21.

In the above embodiment, since the bending section 223 is disposed between the fixing piece and the deformation portion 221 in the connecting portion 22, and the extending direction of the bending section 223 has an included angle with the deformation portion 221, the fixing piece and the deformation portion 221 can be located in different planes, so that after the fixing piece is fixed on the base 1, a certain distance is provided between the deformation portion 221 and the bearing body 21 and the base 1, so that the bearing portion 212 on the bearing body 21 drives the optical element 4 carried by the bearing body to move.

In some possible implementations, the drive assembly 3 includes a base magnetic member 31 and a carrier magnetic member 32, the base magnetic member 31 being disposed on the base 1, the carrier magnetic member 32 being fixed to the carrier 2 at a position corresponding to the base magnetic member 31.

In the embodiment of the present application, as shown in fig. 1, the driving assembly 3 may be provided in a structure including a base magnetic member 31 and a carrier magnetic member 32.

Illustratively, the base magnet 31 may be completely embedded within the base 1; or a part of the base magnetic member 31 is embedded inside the base 1; alternatively, the base magnetic material 31 may be fixed to the surface of the base 1, and at this time, two identical base magnetic materials 31 may be provided on both sides of the base 1 in the thickness direction B of the base 1, and both base magnetic materials 31 on both sides of the base 1 may be adhesively fixed to the base 1. At the same time, the carrier magnetic member 32 is fixed to the carrier 2 at a position corresponding to the base magnetic member 31. For example, as shown in fig. 3, a mounting portion 213 may be formed on the edge of the carrier body 21 by extending at a position corresponding to the driving through hole 11 on the base 1, the shape of the mounting portion 213 is adapted to the shape of the carrier magnetic member 32, and the mounting portion 213 may be a square sheet structure, so that the carrier magnetic member 32 may be adhered to the mounting portion 213 of the carrier 2.

As yet another example, the base magnetic member 31 may be an electromagnetic member and the carrier magnetic member 32 may be a permanent magnetic member; or the base magnetic member 31 may be a permanent magnetic member, and the carrier magnetic member 32 may be an electromagnetic member; alternatively, the base magnetic member 31 and the carrier magnetic member 32 may be electromagnetic members. For example, the electromagnetic member may be an electromagnetic coil, and the permanent magnet member may be a samarium cobalt magnet, a neodymium iron boron magnet, a ferrite magnet, an alnico magnet, or an iron chromium cobalt magnet.

In the above embodiment, since the driving assembly 3 is provided in the structure form including the base magnetic member 31 and the carrier magnetic member 32, the magnitude and direction of the magnetic force between the base magnetic member 31 and the carrier magnetic member 32 can be controlled to drive the movement of the carrier portion 212 in the carrier 2 connected to the carrier magnetic member 32, and the magnitude of the movement of the carrier portion 212 can be controlled; meanwhile, the base magnetic piece 31 is arranged in the base 1, and the space occupied by the base magnetic piece 31 can be saved along the thickness direction B of the bearing body 21, so that the thickness of the driving structure can be reduced, and the size of the driving structure is reduced.

In some possible implementations, referring to fig. 9 and 10, fig. 9 shows an exploded view of a driving structure provided by the present application, and fig. 10 shows a schematic structural view of a carrier in a driving member provided by the present application. As shown in fig. 9, the base magnetic member 31 may be configured to include a first magnetic member 311 and a second magnetic member 312, the first magnetic member 311 and the second magnetic member 312 are disposed on the base 1 at an angle, and the carrier magnetic member 32 may be configured to include two sets of third magnetic members 321 and two sets of fourth magnetic members 322; wherein, in the thickness direction B along the substrate 1, two groups of third magnetic pieces 321 are respectively located at two sides of the substrate 1, and two groups of fourth magnetic pieces 322 are respectively located at two sides of the substrate 1; one group of third magnetic pieces 321 and one group of fourth magnetic pieces 322 are connected with one carrier 2 of the two carriers 2, and the other group of third magnetic pieces 321 and the other group of fourth magnetic pieces 322 are connected with the other carrier 2 of the two carriers 2; and two sets of third magnetic pieces 321 are disposed corresponding to the first magnetic pieces 311, and two sets of fourth magnetic pieces 322 are disposed corresponding to the second magnetic pieces 312.

In the embodiment of the present application, by designing the positions of the connection portion 22 on the carrier 2 and the mounting portion 213 for providing the carrier magnetic member 32, each carrier 2 in the driving structure may have at least two inversion axes, so that the two carriers 2 may simultaneously perform the inversion motion around the at least two inversion axes synchronously or asynchronously. For example, each carrier 2 can be provided in the form of two tilting axes having a first tilting axis a and a second tilting axis C, wherein the first tilting axis a and the second tilting axis C intersect at an angle, which may be 90 degrees or may be an angle of another degree.

As an example, as shown in fig. 10, the carrier 2 may be provided in a rectangular sheet structure, one connection portion 22 may be provided at each of four corners of the carrier 2, and one mounting portion 213 may be formed between each two connection portions 22 on the carrier 2, and the mounting portion 213 may be fixedly provided with the carrier magnetic member 32. In this way, the first tilting axis a and the second tilting axis C can be defined on the carrier 2 by two diagonal lines of the rectangular carrier 2.

As another example, as shown in fig. 9, a first magnetic member 311 and a second magnetic member 312 as base magnetic members 31 may be provided on the base 1. Wherein, the axis of the first magnetic member 311 may be parallel to the first flipping axis a, and the axis of the second magnetic member 312 may be parallel to the second flipping axis C; alternatively, the axis of the first magnetic member 311 may be angled with respect to the first inversion axis a, and the axis of the second magnetic member 312 may be angled with respect to the second inversion axis C. Two first magnetic pieces 311 may be provided, the two first magnetic pieces 311 being provided on opposite sides of the rectangular base 1; two second magnetic elements 312 may also be provided, the two second magnetic elements 312 being arranged on two other opposite sides of the rectangular base body 1. For example, the first magnetic member 311 and the second magnetic member 312 may be embedded in the base 1. Alternatively, two first magnetic members 311 may be disposed on both side surfaces of the base 1 in the thickness direction B of the base 1, and two second magnetic members 312 may be disposed on both side surfaces of the base 1, that is, projections of the two first magnetic members 311 overlap in the thickness direction B of the base 1, and projections of the two second magnetic members 312 also overlap.

As yet another example, as shown in fig. 9, the carrier magnetic member 32 may be provided in a structure including two sets of third magnetic members 321 and two sets of fourth magnetic members 322. In the thickness direction B of the base 1, two sets of third magnetic members 321 are respectively located at two sides of the base 1, one set of third magnetic members 321 is connected to one carrier 2, and the other set of third magnetic members 321 is connected to the other carrier 2. For example, each set of third magnetic members 321 may be configured to include two third magnetic members 321, the two third magnetic members 321 being connected to the same carrier 2, and the two third magnetic members 321 being connected to the same carrier 2 in parallel with each other. Similarly, in the thickness direction B of the base 1, two sets of fourth magnetic members 322 are respectively located on both sides of the base 1, one set of fourth magnetic members 322 is connected to one carrier 2, and the other set of fourth magnetic members 322 is connected to the other carrier 2. For example, each set of fourth magnetic elements 322 may be provided to include two fourth magnetic elements 322, the two fourth magnetic elements 322 being connected to the same carrier 2, and the two fourth magnetic elements 322 being connected to the same carrier 2 in parallel with each other.

Meanwhile, two sets of third magnetic pieces 321 positioned at both sides of the base 1 are connected to the positions on the carrier 2 corresponding to the first magnetic pieces 311 on the base 1, and two sets of fourth magnetic pieces 322 positioned at both sides of the base 1 are connected to the positions on the carrier 2 corresponding to the second magnetic pieces 312 on the base 1. In this way, the first magnetic piece 311 can generate acting force on the two groups of third magnetic pieces 321 located at two sides of the base 1 at the same time, and the second magnetic piece 312 can generate acting force on the two groups of fourth magnetic pieces 322 located at two sides of the base 1 at the same time, so that the third magnetic piece 321 and the fourth magnetic piece 322 can drive the carrier 2 to do reciprocating overturning motion around two overturning axes including the first overturning axis A and the second overturning axis C.

In the above embodiment, since the base magnetic member 31 is configured as the first magnetic member 311 and the second magnetic member 312 connected to the base 1 at an included angle, and correspondingly, the carrier magnetic member 32 is configured to include two groups of third magnetic members 321 and two groups of fourth magnetic members 322, so that the first magnetic member 311 can drive the two groups of third magnetic members 321 connected to the two carriers 2 to move, and the second magnetic member 312 can drive the two groups of fourth magnetic members 322 connected to the two carriers 2 to move, so that each carrier 2 can simultaneously perform a reciprocal overturning motion around two overturning axes under the control of the acting forces applied to the two groups of third magnetic members 321 and the two groups of fourth magnetic members.

Referring to fig. 11, fig. 11 shows a schematic structural view of a driving structure provided by the present application. After the two carriers 2 are fixed to both sides of the base body 1 by the connection portions 22, respectively, a first inversion axis a of the carrier 2 is formed along the connecting line direction of the two connection portions 22. By controlling the driving force of the driving assembly 3, the bearing part 212 in the bearing part 2 can do reciprocating overturning motion relative to the first overturning axis A under the driving of the driving assembly 3, so that the optical element 4 arranged on the bearing part 212 can be driven to move together.

As shown in fig. 9, a first overturning axis a and a second overturning axis C which are intersected are formed on two bearing pieces 2, under the interaction force of the base magnetic piece 31 and the bearing magnetic piece 32, the third magnetic piece 321 and the fourth magnetic piece 322 in the bearing magnetic piece 32 can move relative to the base 1 at the same time, so that the third magnetic piece 321 and the fourth magnetic piece 322 can drive the bearing body 21 of the bearing piece 2 to move at the same time, and then the bearing part 212 on the bearing piece 2 can simultaneously do reciprocating overturning motion around the first overturning axis a and the second overturning axis C, and accordingly the optical element 4 arranged on the bearing part 212 can be driven to do reciprocating overturning motion around the first overturning axis a and the second overturning axis C together.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the application, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (11)

1. A driving structure, characterized by comprising:

A base body (1);

A carrier (2) having a connecting portion (22) and at least two carrier portions (212), the connecting portion (22) having elasticity and being capable of being deformed, the carrier (2) being arranged on the base body (1) via the connecting portion (22), the carrier portions (212) being used for arranging optical elements (4);

The driving assembly (3) is arranged between the base body (1) and the bearing piece (2), and under the driving of the driving assembly (3), the bearing piece (2) can move relative to the base body (1) through the connecting part (22) so as to drive at least two optical elements (4) arranged on the bearing part (212) to move.

2. The drive structure according to claim 1, comprising two carriers (2), each of the carriers (2) having one of the carriers (212), the two carriers (2) being located on both sides of the base body (1) in the thickness direction of the base body (1), respectively.

3. The drive structure according to claim 2, characterized in that the carrier (2) comprises a carrier body (21), the central position of the carrier body (21) having a relief through hole (211); the bearing part (212) comprises a stop sheet (2121) formed by extending from the edge of the bearing body (21), and the stop sheet (2121) is formed by extending along the thickness direction of the bearing body (21).

4. The drive structure according to claim 1, characterized in that the carrier (2) comprises a carrier body (21), the central position of the carrier body (21) having a relief through hole (211); the bearing part (212) comprises a first fixing piece (2123) and a second fixing piece (2124), the first fixing piece (2123) and the second fixing piece (2124) are formed by extending from the edge on the bearing body (21) along the thickness direction of the bearing body (21), and the second fixing piece (2124) is located at a position farther from the bearing body (21) than the first fixing piece (2123); after one of the optical elements (4) is disposed on the first fixing piece (2123) and the other optical element (4) is disposed on the second fixing piece (2124), there is a gap between the two optical elements (4).

5. The drive structure according to any one of claims 1 to 4, characterized in that the carrier (2) comprises a carrier body (21); the connecting part (22) comprises a deformation part (221) and a fixing part (222), the deformation part (221) is formed by extending from the edge of the bearing body (21) and has elasticity, the fixing part (222) is connected with the deformation part (221), and the bearing piece (2) is fixed on the base body (1) through the fixing part (222).

6. The driving structure according to claim 5, wherein the deformation portion (221) includes a straight cantilever formed extending from an edge of the bearing body (21), and the fixing portion (222) is connected to an end of the straight cantilever remote from the bearing body (21).

7. The driving structure according to claim 5, wherein the deformation portion (221) includes at least two sequentially connected cantilever segments (2211), one of the at least two cantilever segments (2211) is formed by extending from an edge of the carrying body (21), and the extending directions of the two connected cantilever segments (2211) are different; the fixing part (222) is connected with a cantilever section (2211) far away from the bearing body (21) in at least two cantilever sections (2211).

8. The driving structure according to claim 6 or 7, wherein the connecting portion (22) further comprises a bending section (223), the fixing portion (222) comprises a fixing piece, the fixing piece and the deformation portion (221) are connected through the bending section (223), and an extending direction of the bending section (223) forms an included angle with a plane of the deformation portion (221), so that the fixing piece and the deformation portion (221) are located in different planes.

9. The drive structure according to claim 2, characterized in that the drive assembly (3) comprises a base magnetic member (31) and a carrier magnetic member (32), the base magnetic member (31) being provided on the base (1), the carrier magnetic member (32) being fixed on the carrier (2) in a position corresponding to the base magnetic member (31).

10. The drive structure according to claim 9, wherein the base magnetic member (31) comprises a first magnetic member (311) and a second magnetic member (312), the first magnetic member (311) and the second magnetic member (312) being disposed on the base (1) at an angle, the carrier magnetic member (32) comprising two sets of third magnetic members (321) and two sets of fourth magnetic members (322);

Wherein, in the thickness direction along the substrate (1), two groups of third magnetic pieces (321) are respectively positioned at two sides of the substrate (1), and two groups of fourth magnetic pieces (322) are respectively positioned at two sides of the substrate (1); -one set of said third magnetic elements (321) and one set of said fourth magnetic elements (322) are each connected to one (2) of the two (2) carriers, the other set of said third magnetic elements (321) and the other set of said fourth magnetic elements (322) are each connected to the other (2) of the two (2) carriers; and two groups of third magnetic pieces (321) are arranged corresponding to the first magnetic pieces (311), and two groups of fourth magnetic pieces (322) are arranged corresponding to the second magnetic pieces (312).

11. A projection device, comprising:

An opto-mechanical assembly;

A lens assembly;

An optical element (4);

The drive structure of any one of claims 1 to 10, the optical element being fixed to the carrier (212), the drive structure being arranged between the opto-mechanical assembly and the lens assembly.