CN219828472U - Moving mechanism and projection equipment - Google Patents

Abstract

The utility model provides a moving mechanism and projection equipment, and relates to the technical field of optics. The moving mechanism can simplify the structure of the moving mechanism and can drive the carried optical assembly to move. The moving mechanism comprises a base body and at least one group of moving components arranged on the base body, wherein the moving components comprise a driving piece, a moving support and a swinging piece, the driving piece is fixed on the base body, the moving support is arranged on the base body, and the swinging piece is fixed on the driving piece and connected with the moving support. The moving mechanism is used in optical equipment or optical device to drive the carried optical assembly to move.

Description

Moving mechanism and projection equipment

Technical Field

The present utility model relates to the field of optical technologies, and in particular, to a moving mechanism and a projection device.

Background

Projection devices have been used in a wide variety of settings, such as business, educational and home. The projection device works on the principle that light irradiates onto a display element of an image to generate an image, and then the image is projected to a curtain or a wall surface through a lens.

In the using process of the projection device, the size of the projection picture can be adjusted by adjusting the position of the lens relative to the display element, and the position of the projection picture can also be adjusted. In the related art, a mechanism capable of driving the lens to move is arranged for the lens to adjust the position of the lens. For example, by providing a mechanism including a gear and a rack, the rack is moved by rotation of the gear to move the lens. However, such a mechanism is complicated in structure and has a large number of parts, which is disadvantageous in cost control of the projection apparatus.

Disclosure of Invention

The utility model provides a moving mechanism and projection equipment, which can simplify the structure of the moving mechanism and drive a carried optical assembly to move.

In one aspect, the present utility model provides a movement mechanism comprising: a base and at least one set of moving assemblies, wherein the moving assemblies comprise a moving bracket, a swinging member and a driving member; the movable bracket is provided with a connecting part and is movably arranged on the base body and used for bearing the optical component; the driving piece is fixed on the base body; the swinging piece is fixed on the driving piece and is abutted with the connecting part; under the drive of the driving piece, the swinging piece swings relative to the base body and can stir the movable bracket to move relative to the base body.

The moving mechanism provided by the utility model is provided with the matrix, so that at least one group of moving components can be arranged through the matrix; the movable assembly is arranged in a structural form comprising a movable bracket, a swinging piece and a driving piece, and the movable bracket can be used for bearing an optical assembly needing to move; the connecting part is arranged on the movable bracket, the swinging part is fixedly arranged on the driving part, and the swinging part is abutted with the connecting part of the movable bracket, so that the movable bracket can be driven by the driving part to move through the swinging part; meanwhile, the optical assembly can be driven to move in one direction by arranging a group of moving assemblies, and can be driven to move in a plurality of directions by arranging a plurality of groups of moving assemblies. Compared with the prior art, the moving mechanism provided by the embodiment of the utility model adopts the transmission structure of the gear and the rack, and can realize that the moving bracket is shifted to move only through the swinging piece fixed on the driving piece, so that the number of parts in the moving mechanism can be reduced, the production cost can be reduced, the structure of the moving mechanism can be simplified, and the optical assembly borne by the moving mechanism can be driven to move.

In one possible implementation of the present utility model, the substrate includes a first substrate and a second substrate, the first substrate is fixedly connected with the second substrate, and a receiving space is formed between the first substrate and the second substrate.

In one possible implementation of the present utility model, the moving mechanism includes a first moving assembly, the first moving assembly includes a first moving bracket disposed in the accommodating space, the first moving bracket abuts against the second substrate, and a first guiding structure is disposed between the first moving bracket and the second substrate, and the first guiding structure is used for limiting the movement of the first moving bracket relative to the substrate along the first direction.

In one possible implementation of the utility model, a first bearing structure is further arranged between the first movable support and the second base body, and the first movable support and the second base body are connected in a sliding manner through the first bearing structure.

In one possible implementation manner of the present utility model, the moving mechanism further includes a second moving assembly, the second moving assembly includes a second moving bracket disposed in the accommodating space, the second moving bracket is abutted to a side of the first moving bracket, which is far away from the second substrate, and a second guiding structure is disposed between the second moving bracket and the first moving bracket, and the second guiding structure is used for limiting the second moving bracket to move along a second direction relative to the substrate; wherein the first direction and the second direction have an included angle.

In one possible implementation of the utility model, a second bearing structure is further arranged between the second movable support and the first movable support, and the second movable support and the first movable support are connected in a sliding manner through the second bearing structure.

In one possible embodiment of the utility model, the oscillating element has a through-slot, the connecting portion being adapted to the through-slot and extending into the through-slot.

In one possible embodiment of the utility model, the displacement mechanism further comprises an elastic element, which is arranged between the base body and the displacement bracket, by means of which the displacement bracket is brought to bear against the base body in the axial direction of the displacement bracket.

In one possible implementation of the utility model, a bearing member is arranged between the elastic member and the movable bracket, and one end of the bearing member is abutted with the movable bracket.

In another aspect, the present utility model provides a projection apparatus comprising: an optical assembly and a moving mechanism provided in any one of the above, the optical assembly being disposed on a moving support.

The projection equipment provided by the utility model has the same technical effect as the moving mechanism comprises any one of the moving mechanisms, namely, the driving piece and the moving support are connected in the moving mechanism only through the swinging piece, so that the number of parts in the moving mechanism can be reduced, the production cost can be reduced, the structure of the moving mechanism can be simplified, and the optical assembly borne by the moving mechanism can be driven to move.

Drawings

FIG. 1 is an exploded view of a movement mechanism provided by the present utility model;

FIG. 2 is a schematic view of a first base of the moving mechanism according to the present utility model;

FIG. 3 is a schematic view of a second base of the moving mechanism according to the present utility model;

FIG. 4 is a schematic view of a driving member and a swinging member of the moving mechanism according to the present utility model;

FIG. 5 is a cross-sectional view of a movement mechanism provided by the present utility model;

FIG. 6 is a schematic view of a first moving bracket of the moving mechanism according to the present utility model;

FIG. 7 is a schematic view of a first moving bracket of the moving mechanism according to the present utility model;

FIG. 8 is a schematic view of a second moving bracket of the moving mechanism according to the present utility model;

FIG. 9 is a schematic diagram of a movement mechanism provided by the present utility model;

fig. 10 is a schematic view of a moving mechanism provided by the present utility model.

Reference numerals illustrate:

1-a substrate; 11-a first matrix; 111-a first matrix body; 112-a first fixing portion; 113-a receiving groove; 114-a second fixing portion; 115-first matrix through-holes; 116-connecting holes; 12-a second matrix; 121-a second matrix body; 122-a third guide groove; 123-fourth bearing boss; 124-a first avoidance gap; 125-a second avoidance gap; 126-supporting columns; 127-a second substrate through hole; 2-a first moving component; 21-a first mobile carriage; 211-a first bracket body; 212-a first connection; 213-first guide groove; 214-a first bearing boss; 215-a first bracket through hole; 216—a first guide boss; 217-third bearing boss; 22-a first oscillating member; 23-a first driving member; 24-a first fixed bracket; 3-a second moving assembly; 31-a second mobile carriage; 311-a second bracket body; 312-a second connection; 313-second guide boss; 314-a second bearing boss; 315-second bracket through holes; 316-connecting column; 32-a second swinging member; 33-a second driving member; 34-a second fixed bracket; 4-elastic members; 5-a bearing member; 6-fastening pieces; 7-an optical component; 71-a lens barrel; 72-a flange; 73-an optical lens; a-a first direction; b-a second direction; c-a first position; d-a second position.

Detailed Description

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

In embodiments of the present utility model, 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 utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

Furthermore, in the embodiments of the present utility model, 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 utility model, 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 utility model, 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 utility model, 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 utility model 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 utility model provides a projection device, which can adjust the position, the size, the angle and the like of a projection picture through adjusting an optical component in the working process. For example, the lens assembly may be adjusted to adjust the projected image.

Referring to fig. 1, fig. 1 is an exploded view of a moving mechanism according to the present utility model. The projection apparatus provided by the present utility model includes: the optical component 7 and the moving mechanism, the moving mechanism includes a moving bracket, the moving bracket can generate movement under the driving of the driving piece, the optical component 7 is arranged on the moving bracket, and the optical component 7 can be driven to move in the moving process of the moving bracket, so that the pose of the optical component 7 can be adjusted.

Meanwhile, an embodiment of the present utility model further provides a moving mechanism, as shown in fig. 1, including: a base body 1 and at least one group of moving components, wherein the moving components comprise a moving bracket, a swinging component and a driving component, the moving bracket is provided with a connecting part, and is movably arranged on the base body 1 and is used for bearing an optical component 7; the driving element is also fixed on the base 1; the swinging member is fixed on the driving member and is abutted with the connecting part of the movable support, so that the swinging member can swing relative to the base body 1 and can stir the movable support to move relative to the base body 1 under the driving of the driving member, and the optical assembly 7 can be driven to move.

According to the moving mechanism provided by the embodiment of the utility model, due to the arrangement of the base body 1, at least one group of moving components can be arranged through the base body 1; and, set up the movable assembly into including moving the structural style of support, swinging member and driving piece, can bear the optical assembly 7 that needs to move through moving the support; the connecting part is arranged on the movable bracket, the swinging part is fixedly arranged on the driving part, and the swinging part is abutted with the connecting part of the movable bracket, so that the movable bracket can be driven by the driving part to move through the swinging part; meanwhile, by arranging a group of moving assemblies, the optical assembly 7 can be driven to move in one direction, and by arranging a plurality of groups of moving assemblies, the optical assembly 7 can be driven to move in a plurality of directions. Compared with the prior art, the moving mechanism provided by the embodiment of the utility model adopts the transmission structure of the gear and the rack, and can realize that the moving bracket is shifted to move only through the swinging piece fixed on the driving piece, so that the number of parts in the moving mechanism can be reduced, the production cost can be reduced, the structure of the moving mechanism can be simplified, and the optical assembly borne by the moving mechanism can be driven to move.

In some possible embodiments, referring to fig. 2 and 3, fig. 2 is a schematic view of a first substrate of a moving mechanism provided by the present utility model, and fig. 3 is a schematic view of a second substrate of the moving mechanism provided by the present utility model. As shown in fig. 1, 2 and 3, the base body 1 may be provided in a structure including a first base body 11 and a second base body 12, and the first base body 11 and the second base body 12 together form the base body 1.

Illustratively, as shown in fig. 2, the first base 11 includes a flat plate-shaped first base body 111, a fixing portion for fixing the driving member is provided on the first base body 111, a first base through hole 115 for passing out the optical assembly 7 is provided, and a plurality of connection holes 116 for fixedly connecting with the second base 12 are provided. For example, when the moving mechanism needs to implement driving the optical component to generate motion in two directions, the first fixing portion 112 and the second fixing portion 114 may be disposed on the first base body 111, and a driving member may be fixedly disposed on each fixing portion.

As another example, as shown in fig. 3, the second base 12 includes a flat plate-shaped second base body 121, and a plurality of support columns 126 for fixedly connecting with the first base 11 are provided on the second base body 121. For example, support columns 126 may be provided at four corners of the second base body 121, respectively, to be opposite to positions of the connection holes 116 on the first base body 111. The first and second base bodies 111 and 121 may be fixedly coupled through the coupling holes 116 and the support columns 126 using the fastener 6.

Since the support column 126 is provided on the second base body 121, an accommodation space can be formed between the first base body 111 and the second base body 121, so that the base 1 can have an accommodation space to dispose the moving bracket therein.

As yet another example, as shown in FIG. 3, a relief notch may also be provided on the second base body 121, which may provide sufficient space for movement of the oscillating member. For example, in the case of providing two sets of moving assemblies, the first avoidance gap 124 and the second avoidance gap 125 may be provided on the second base body 121, where the first avoidance gap 124 corresponds to the first fixing portion 112, and the second avoidance gap 125 corresponds to the second fixing portion 114.

In other possible embodiments, referring to fig. 4, fig. 4 is a schematic view of a driving member and a swinging member of a moving mechanism provided in the present utility model. The driving member of the moving assembly may employ a motor, for example, a stepping motor, a servo motor, a general motor, etc. One end of the swinging piece is provided with a mounting hole matched with the output shaft of the motor, the swinging piece can be sleeved on the output shaft of the motor, and the swinging piece is fixed by adopting a fastener 6; meanwhile, a through groove can be formed in the swinging piece and is matched with the connecting part on the movable support, and the connecting part can extend into the through groove and slide along the through groove.

In order to facilitate the fixing of the driving member on the first substrate 11, a fixing bracket may be provided, which may be provided in an L-shaped structure, the driving member being fixed on one side of the L-shaped fixing bracket by the fastening member 6, and the other side of the L-shaped fixing bracket being fixed on the fixing portion on the first substrate 11 by the fastening member 6.

In still other possible embodiments, referring to fig. 5, 6 and 7, fig. 5 is a cross-sectional view of a movement mechanism provided by the present utility model; FIG. 6 is a schematic view of a first moving bracket of the moving mechanism according to the present utility model;

fig. 7 is a schematic view of a first moving bracket of the moving mechanism provided by the utility model. As shown in fig. 1, 4 and 5, a first moving component 2 may be provided in the moving mechanism, and the optical component 7 is driven to move along the first direction a by the first moving component 2. The first moving assembly 2 includes: the first movable bracket 21, the first swinging member 22 and the first driving member 23, wherein the first swinging member 22 is fixed on an output shaft of the first driving member 23, the first driving member 23 is fixed on the first fixing portion 112 of the first base 11 through the first fixing bracket 24, and the first swinging member 22 extends into the first avoiding notch 124 of the second base 12; the first moving bracket 21 is provided in the accommodation space of the base 1 and abuts against the second base 12.

As illustrated in fig. 6 and 7, for example, a first connection portion 212 may be provided on the first bracket body 211 of the first moving bracket 21. For example, a cylindrical first connection portion 212 may be formed by extending a cylindrical first connection portion 212 along the second direction B on a side wall of the first bracket body 211, where the cylindrical first connection portion 212 is adapted to a through groove on the first swinging member 22, and the first connection portion 212 penetrates into the through groove on the first swinging member 22.

As yet another example, as shown in fig. 5, 6 and 7, the first moving bracket 21 is provided in the accommodation space of the base 1, and the first moving bracket 21 abuts against the second base 12, and a first guide structure is provided between the first mover bracket 21 and the second base 12, by which the first moving bracket 21 can be restricted from moving in only the first direction a with respect to the base 1.

For example, a plurality of first guide bosses 216 may be disposed on a side of the first support body 211 of the first moving support 21, which is close to the second base body 12, and correspondingly, as shown in fig. 3, a plurality of third guide grooves 122 may be disposed on a side of the second base body 121, which is close to the first base body 11, wherein each of the first guide bosses 261 is adapted to a corresponding one of the third guide grooves 122, and a first guide structure is formed by the first guide bosses 261 and the third guide grooves 122. If two parallel first guide bosses 216 are provided on the first bracket body 211, two corresponding third guide grooves 122 are provided on the second base body 121; further, the first guide boss 261 and the third guide groove 122 are both provided in the axial direction along the first direction a. In this way, the first moving support 21 can be moved relative to the base 1 in the first direction a, so that the optical assembly 7 can be driven to move in the first direction a.

Alternatively, a guide groove may be provided on the first bracket body 211 on a side close to the second base body 12, and a corresponding guide boss may be provided on the second base body 121 on a side close to the first base body 11, with the guide groove and the guide boss being the first guide structure. It should be noted that, the embodiment of the present utility model is not limited to the structural form of the first guiding structure.

In still other possible embodiments, as shown in fig. 3, 6 and 7, a first bearing structure may be provided between the first moving bracket 21 and the second base 12, by which the first moving bracket 21 and the second base 12 are slidably connected.

For example, as shown in fig. 3, a plurality of fourth bearing bosses 123 may be disposed on a side of the second base body 121 near the first base body 11, and correspondingly, as shown in fig. 7, a third bearing boss 217 adapted to each fourth bearing boss 123 may be disposed on a side of the first bracket body 211 near the second base body 21. The fourth bearing boss 123 and the third bearing boss 217 constitute a first bearing structure.

For example, four fourth bearing bosses 123 may be provided on the second base body 121, correspondingly, four third bearing bosses 217 may be provided on the first holder body 211, and the fourth bearing bosses 123 and the third bearing bosses 217 may be provided such that the long axis directions of both are coincident with the first direction a.

As another example, the first bearing structure may be provided in the form of a sliding bearing, for example, grooves with arc-shaped cross sections are provided on the opposite surfaces of the first bracket body 211 and the second base body 12, respectively, and two arc-shaped grooves form a limiting passage, the axial direction of which coincides with the first direction a, a plurality of balls are provided in the limiting passage, and the sliding bearing is formed by the balls and the limiting passage.

In this way, the contact area between the first movable support 21 and the second base 21 can be reduced by the first bearing structure, so that the friction force between the first movable support 21 and the second base 21 can be reduced, and the first driving piece 23 can conveniently stir the first movable support 21 to move relative to the base 1 through the first swinging piece 22.

As yet another example, as shown in fig. 6 and 7, a first bracket through hole 215 may be further provided on the first bracket body 211, for example, a rectangular first bracket through hole 215 having rounded corners may be provided in the middle of the first bracket body 211. By providing the first support through-hole 215, on the one hand, a transmission path can be provided for the light transmitted to the optical assembly 7, and on the other hand, the weight of the first movable support 21 can be reduced, which is advantageous in controlling the movement of the first movable support 21.

In still other possible embodiments, as shown in fig. 1 and 5, a second moving assembly 3 may be further provided in the moving mechanism, and the optical assembly 7 is moved in the second direction B by the second moving assembly 3. The second moving assembly 3 includes: a second moving bracket 31, a second swinging member 32, and a second driving member 33. Wherein the second swinging member 32 is fixed on the output shaft of the second driving member 33, the second driving member 33 is fixed on the second fixing portion 114 of the first base 11 through the second fixing bracket 34, and the second swinging member 32 extends into the second avoidance gap 125 of the second base 12; the second moving bracket 31 is disposed in the accommodation space of the base 1, and the second moving bracket 31 is brought into abutment with the first moving bracket 21, i.e., the second moving bracket 31 is disposed between the first base 11 and the first moving bracket 21; the optical module 7 is fixed to the first moving bracket 21, and the optical module 7 is extended from the first substrate through hole 115 of the first substrate 11.

For example, as shown in fig. 8, a second connection part 312 may be provided on the second bracket body 311 of the second moving bracket 31. For example, a cylindrical second connection portion 312 is formed on the side wall of the second bracket body 311 by extending, and the cylindrical second connection portion 312 may be formed by extending along the first direction a, where the cylindrical second connection portion 312 is adapted to the through slot on the second swinging member 32, and the second connection portion 312 penetrates into the through slot on the second swinging member 32 and may move in the through slot on the second swinging member 32 along the axial direction of the second connection portion 312.

As yet another example, as shown in fig. 5, a second moving bracket 31 is provided between the first base 11 and the first moving bracket 21, and the second moving bracket 31 is movable between the first base 11 and the first moving bracket 21 by driving of a second driving piece 33. In order to facilitate control of the direction of movement of the second movable support 31 relative to the base body 1, a second guide structure is provided between the second movable support 31 and the first movable support 21, by means of which the second movable support 31 can be restricted from movement relative to the base body 1 only in the second direction B.

For example, as shown in fig. 7, a plurality of first guide grooves 213 are provided on a side of the first bracket body 211 of the first moving bracket 21 near the first base 11, and correspondingly, as shown in fig. 8, a plurality of second guide bosses 313 are provided on a side of the second bracket body 311 of the second moving bracket 31 near the second base 12, wherein each of the second guide bosses 313 is adapted to a corresponding one of the first guide grooves 213, and a second guide structure is formed by the second guide bosses 313 and the first guide grooves 213. If two parallel first guide grooves 213 are provided on the first bracket body 211, two corresponding second guide bosses 313 are provided on the second bracket body 311; the first guide groove 213 and the second guide boss 313 are both provided in the axial direction along the second direction B. In this way, the second movable support 31 can be moved relative to the base 1 in the second direction B, so that the optical assembly 7 can be moved in the second direction B.

The first direction a and the second direction B have an included angle therebetween, for example, the first direction a and the second direction B may be set to two directions perpendicular to each other. The angle between the first direction a and the second direction B may be set according to actual needs, which is not limited in the embodiment of the present utility model.

Alternatively, a guide boss may be provided on the first bracket body 211 on a side close to the first base 11, and a corresponding guide groove may be provided on the second bracket body 311 on a side close to the second base 12, with the guide groove and the guide boss being the second guide structure. It should be noted that, the embodiment of the present utility model is not limited to the structural form of the second guiding structure.

In still other possible embodiments, as shown in fig. 7 and 8, a second bearing structure may be provided between the first moving bracket 21 and the second moving bracket 31, by which the first moving bracket 21 and the second moving bracket 31 are slidably connected.

Illustratively, as shown in fig. 7, a plurality of first bearing bosses 214 are provided on a side of the first bracket body 211 of the first moving bracket 21 near the first base 11, and correspondingly, as shown in fig. 8, a plurality of second bearing bosses 314 are provided on a side of the second bracket body 311 of the second moving bracket 31 near the second base 12. Each first supporting boss 214 is matched with a corresponding second supporting boss 314, and the first supporting boss 214 and the second supporting boss 314 form a second supporting structure.

For example, one first bearing boss 214 may be provided at each of the four corners of the first bracket body 211, one second bearing boss 314 may be provided at each of the four corners of the second bracket body 311, and the first bearing boss 214 and the second bearing boss 314 may be provided such that the long axis directions thereof are both identical to the second direction B.

As another example, the second bearing structure may be configured as a sliding bearing, for example, grooves with arc-shaped cross sections are respectively formed on the opposite surfaces of the first bracket body 211 and the second bracket body 311, two arc-shaped grooves form a limiting channel, the axial direction of the limiting channel is consistent with the second direction B, a plurality of balls are disposed in the limiting channel, and the sliding bearing is formed by the balls and the limiting channel.

In this way, the contact area between the second movable bracket 31 and the second movable bracket 21 can be reduced by the second bearing structure, so that the friction force between the two can be reduced, and the second driving piece 33 can conveniently drive the second movable bracket 31 to move relative to the base body 1 through the second swinging piece 32.

In still other possible embodiments, as shown in fig. 1, 5 and 8, in order to facilitate fixing the optical assembly 7 to the first moving bracket 31, a connection post 316 may be provided on the first moving bracket 31, a through hole aligned with the connection post 316 may be provided on the flange 72 of the optical assembly 7, and the flange 72 of the optical assembly 7 may be fixed to the first moving bracket 31 through the through hole and the connection post 316 using the fastener 6 to fix the lens barrel 71 connected to the flange 72 to the first moving bracket 31, so that the optical lens 73 provided on the lens barrel 71 may be fixed to the first moving bracket 31.

In this embodiment, by providing the connection post 316, the local thickness of the position on the first movable bracket 31 where it is connected to the flange 72 can be increased, so that the connection strength between the two can be improved, without setting the entire thickness of the first movable bracket 31 thicker, and the weight of the first movable bracket 31 can be reduced.

For example, a second bracket through hole 315 may be provided on the second bracket body 311 of the second moving bracket 31, for example, a circular second bracket through hole 315 may be provided in the middle of the second bracket body 311. By providing the second holder through-hole 315, on the one hand, a transmission path can be provided for the light transmitted to the optical assembly 7, and on the other hand, the weight of the second movable holder 31 can be reduced, which is advantageous in controlling the movement of the second movable holder 31.

In still other possible embodiments, as shown in fig. 1 and 5, in order to improve the stability and the firmness of the moving mechanism, an elastic member 4 may be provided between the base 1 and the moving bracket, and the moving bracket is abutted against the base 1 by the elastic member 4 in the axial direction of the moving bracket without generating a gap with the base 1.

For example, a plurality of elastic members 4 may be provided between the first base 11 and the second movable bracket 31, and the second movable bracket 31 is pressed against the first movable bracket 21 by the plurality of elastic members 4, so that the first movable bracket 21 is also pressed against the second base 12. For example, four compression springs may be provided by which the first moving bracket 21 and the second moving bracket 31 are pressed against each other.

In this way, the first movable support 21 and the second movable support 31 can be stably connected with the base 1 without any random movement in the axial direction relative to the base 1, and the light assembly 7 can be stably maintained relative to the base 1 without unnecessary shaking.

As another example, as shown in fig. 2 and 5, four receiving grooves 113 may be provided on the first base body 111 of the first base 11, the receiving grooves 113 being provided on the first base body 111 on a side toward the first moving bracket 31, and the receiving grooves 113 being provided in a structural shape adapted to the elastic member 4, for example, the receiving grooves 113 being provided as cylindrical blind holes. By providing the receiving groove 113, a structure for mounting and positioning the elastic member 4 can be provided, so that the elastic member 4 can be mounted conveniently.

In order to reduce the friction between the elastic members 4 and the second moving bracket 31, for another example, a bearing member 5 may be provided between each elastic member 4 and the second moving bracket 31, and one end of the bearing member 5 abuts against the second moving bracket 31. The end of the bearing 5 contacting the second moving bracket 31 may be provided in a circular arc shape to reduce friction force therebetween, or may be coated with lubricating grease therebetween to further reduce friction force.

Referring to fig. 9 and 10, fig. 9 and 10 are schematic diagrams of a moving mechanism provided by the present utility model. When the optical component 7 needs to be driven to move by the moving mechanism, the first driving piece 23 can drive the first swinging piece 22 to swing, so that the first swinging piece 22 can toggle the first moving support 21 to move along the first direction a, and thus the second moving support 31 is driven to move along the first direction a, and the optical component 7 fixed on the second moving support 31 can also move along the first direction a. The second swinging member 32 may be driven to swing simultaneously or separately by the second driving member 33, so that the second swinging member 32 toggles the second moving bracket 31 to move along the second direction B, and thus the optical component 7 fixed on the second moving bracket 31 may also move along the second direction B. For example, the optical component 7 may be moved from the first position C to the second position D along the second direction B.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, 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 (10)

1. A movement mechanism, comprising:

a base body (1);

at least one set of moving assemblies including a moving bracket, a swing member, and a driving member; the movable bracket is provided with a connecting part and is movably arranged on the base body and used for bearing an optical assembly (7); the driving piece is fixed on the base body (1); the swinging piece is fixed on the driving piece and is abutted with the connecting part;

under the drive of the driving piece, the swinging piece swings relative to the base body (1) and can stir the movable support to move relative to the base body (1).

2. The movement mechanism according to claim 1, characterized in that the base body (1) comprises a first base body (11) and a second base body (12), the first base body (11) and the second base body (12) are fixedly connected, and a containing space is formed between the first base body (11) and the second base body (12).

3. The movement mechanism according to claim 2, comprising a first movement assembly (2), the first movement assembly (2) comprising a first movement bracket (21) arranged in the accommodation space, the first movement bracket (21) being in abutment with the second base body (12), a first guiding structure being provided between the first movement bracket (21) and the second base body (12), the first guiding structure being adapted to restrict movement of the first movement bracket (21) relative to the base body (1) in a first direction.

4. A movement mechanism according to claim 3, characterized in that a first bearing structure is further provided between the first movement support (21) and the second base body (12), the first movement support (21) and the second base body (12) being slidingly connected by means of the first bearing structure.

5. The movement mechanism according to claim 3 or 4, further comprising a second movement assembly (3), the second movement assembly (3) comprising a second movement bracket (31) arranged in the accommodation space, the second movement bracket (31) abutting against a side of the first movement bracket (21) remote from the second base body (12), and a second guiding structure being provided between the second movement bracket (31) and the first movement bracket (21), the second guiding structure being adapted to restrict movement of the second movement bracket (31) relative to the base body (1) in a second direction;

wherein the first direction and the second direction have an included angle.

6. The moving mechanism according to claim 5, characterized in that a second bearing structure is further provided between the second moving bracket (31) and the first moving bracket (21), and the second moving bracket (31) and the first moving bracket (21) are slidably connected through the second bearing structure.

7. The moving mechanism as claimed in any one of claims 1 to 4, wherein said swinging member has a through groove thereon, and said connecting portion is fitted into and extends into said through groove.

8. The movement mechanism according to any one of claims 1 to 4, further comprising an elastic member (4), the elastic member (4) being provided between the base body (1) and the movement bracket, the movement bracket being abutted against the base body (1) by the elastic member (4) in an axial direction along the movement bracket.

9. The moving mechanism according to claim 8, characterized in that a bearing member (5) is provided between the elastic member (4) and the moving bracket, one end of the bearing member (5) being in abutment with the moving bracket.

10. A projection device, comprising:

an optical component (7);

the movement mechanism of any one of claims 1 to 9, the optical assembly being disposed on the movement support.