CN114076246A

CN114076246A - Position adjusting bracket of projection equipment

Info

Publication number: CN114076246A
Application number: CN202010809082.XA
Authority: CN
Inventors: 唐泽达; 王霖; 赵振宇; 贾坤; 李屹
Original assignee: Appotronics Corp Ltd
Current assignee: Shenzhen Appotronics Corp Ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2022-02-22
Also published as: WO2022033382A1

Abstract

The embodiment of the application provides a projection equipment position control support, and relates to the technical field of projection equipment. The projection equipment position adjusting support comprises a fixed seat, a first adjusting mechanism and a second adjusting mechanism. The fixing seat is used for fixing the projection equipment and is fixedly connected with a first transmission piece. The first adjusting mechanism is arranged on one side, close to the first transmission piece, of the fixed seat and comprises a first adjusting seat, a first driving assembly and a second transmission piece, and the first driving assembly is in transmission connection with the first transmission piece to drive the fixed seat to rotate around the first shaft. The second adjusting mechanism is located on the side, away from the fixed base, of the first adjusting mechanism and comprises a second adjusting seat and a second driving assembly, the second driving assembly is in transmission connection with a second transmission piece, the second transmission piece drives the first adjusting seat, and the first adjusting seat drives the fixed base to perform lifting motion or pitching motion. The projection equipment position adjusting support is simple in structure, convenient to adjust, high in adjusting precision and beneficial to improving the position adjusting efficiency of the projection equipment.

Description

Position adjusting bracket of projection equipment

Technical Field

The application belongs to the technical field of projection equipment, and more specifically relates to a projection equipment position control support.

Background

A projector, which is a device capable of projecting images or videos onto a projection screen, and is widely used in homes, offices, schools and entertainment venues.

With the development of science and technology, ultra-short focus projector products are available in the market, which can project 100 inches or more of pictures within a distance of about 0.7 m. Due to short-distance projection, small movements of the projector position may cause the projected picture to deviate significantly from the projection screen.

At present, when a projector is installed, the position of the projector is manually adjusted so that a projection picture can be projected to a proper position of a projection screen. However, the accuracy of manually adjusting the position of the projector is poor.

Disclosure of Invention

An object of the present application includes, for example, providing a projection device position adjustment bracket to ameliorate the above-mentioned problems.

The embodiment of the application can be realized as follows:

the projection equipment position adjusting support comprises a fixed seat, a first adjusting mechanism and a second adjusting mechanism. The fixing base is used for bearing and fixing the projection equipment, and one face, deviating from the projection equipment, of the fixing base is fixedly connected with a first transmission piece. The first adjusting mechanism is arranged on one side, close to the first transmission piece, of the fixed seat, and comprises a first adjusting seat, a first driving assembly and a second transmission piece, wherein the first driving assembly and the second transmission piece are arranged on the first adjusting seat, and the first driving assembly is in transmission connection with the first transmission piece so as to drive the fixed seat to rotate around the first shaft. The second adjusting mechanism is arranged on one side, deviating from the fixing base, of the first adjusting mechanism, the second adjusting mechanism comprises a second adjusting base and a second driving assembly arranged on the second adjusting base, the second driving assembly is in transmission connection with a second transmission piece, the second transmission piece drives the first adjusting base, and the first adjusting base drives the fixing base to perform lifting motion or pitching motion.

Further, the second driving medium includes outer lane, nut, first slip axle and second slip axle. The nut is rotatable to be inlayed and to be located in the outer lane, and first axle that slides is connected in first regulation seat along radial both sides and slidable of outer lane, and the second axle that slides radially wears to locate behind the outer lane with nut rotatable coupling, first axle that slides and second axle that slides have the contained angle. The second driving assembly comprises a second driving piece and a screw rod in transmission connection with the second driving piece, and the screw rod is connected to the second adjusting seat along the extension direction of the first shaft and is in threaded connection with the nut.

Furthermore, the number of the second transmission parts is at least three, the number of the second driving assemblies is equal to that of the second transmission parts, the second driving assemblies correspond to the second transmission parts one by one, and the at least three second transmission parts are not located on the same straight line. When the moving heights of the nuts in all the second transmission parts are equal, the first adjusting mechanism can drive the fixed seat to lift along the extending direction of the first shaft relative to the second adjusting mechanism. When the nut motion height in all second driving mediums is unequal, the first adjusting mechanism can drive the fixed seat to perform pitching motion around a second shaft with an included angle with the first shaft relative to the second adjusting mechanism, or perform pitching motion around a third shaft with an included angle with the first shaft and the second shaft.

Further, the second driving medium still includes the mounting, and mounting fixed connection has seted up the sliding hole in first regulation seat, and the sliding hole is worn to locate by first sliding shaft slidable in the mounting.

Furthermore, the first driving assembly comprises a first driving piece and a first gear in transmission connection with the first driving piece, the first driving piece comprises a rotating shaft and a second gear, the rotating shaft is fixedly connected with the fixing seat, the second gear is in key connection with the rotating shaft and in meshing transmission with the first gear, and the first driving piece drives the fixing seat to swing around the first shaft through the first driving piece.

Furthermore, the first driving assembly further comprises a combined bearing, the combined bearing is fixedly connected to the first adjusting seat, and one end, far away from the fixed seat, of the rotating shaft is rotatably arranged on the combined bearing in a penetrating mode.

Further, the device further comprises a third adjusting mechanism, the third adjusting mechanism is arranged on the surface, deviating from the first adjusting mechanism, of the second adjusting mechanism, the third adjusting mechanism comprises a driving wheel assembly, the driving wheel assembly drives the second adjusting mechanism, the second adjusting mechanism drives the first adjusting mechanism, and the first adjusting mechanism drives the fixing seat to linearly move along the extending direction of a second shaft with an included angle with the first shaft.

Further, the third adjusting mechanism further comprises a third adjusting seat and a supporting wheel, the third adjusting seat is arranged on one surface, deviating from the first adjusting mechanism, of the second adjusting mechanism, the driving wheel assembly is connected to one surface, close to the second adjusting mechanism, of the third adjusting seat, and the supporting wheel is rotatably connected to the circumferential direction, deviating from one surface of the second adjusting mechanism, of the third adjusting seat.

Furthermore, a through hole is formed in the third adjusting seat, the driving wheel assembly comprises a third driving piece and a driving wheel which are connected in a transmission mode, the third driving piece is connected to the third adjusting seat, the driving wheel penetrates through the through hole and is located on the same plane with the supporting wheel, and the third driving piece drives the projection equipment position adjusting support to move linearly through the driving wheel.

Further, the third adjustment mechanism further comprises a steering wheel assembly, and the steering wheel assembly is in transmission connection with the driving wheel assembly so as to enable the driving wheel assembly to steer around the first shaft.

Furthermore, the steering wheel assembly comprises a fourth driving part, a worm wheel and a worm, the fourth driving part is connected with the worm, the worm is in transmission connection with the worm wheel, and the driving wheel assembly is fixedly connected to the worm wheel and synchronously rotates along with the worm wheel.

Furthermore, one side of the fixing seat, which is far away from the first transmission piece, is provided with an opening and closing clamp, the opening and closing clamp comprises a first clamping mechanism and a second clamping mechanism, the first clamping mechanism is arranged relatively along a first direction and can be connected to the fixing seat in a sliding manner, the second clamping mechanism is arranged relatively along a second direction with an included angle with the first direction and can be connected to the fixing seat in a sliding manner, and the first clamping mechanism and the second clamping mechanism enclose an installation area for fixing the projection equipment.

Further, first fixture includes dog and first elastic component, and the fixing base is provided with the sliding part along first direction, and dog slidable connects in the sliding part, and first elastic component is installed in the dog and is deviated from the one side of installation area.

The embodiment of the application provides a projection equipment position adjusting bracket, wherein the projection equipment is fixedly connected to a fixed seat through the fixed seat, a first adjusting mechanism and a second adjusting mechanism which are arranged in a three-layer structure, and the first adjusting mechanism drives the fixed seat and the projection equipment to rotate around a first shaft; the second adjusting mechanism drives the first adjusting mechanism, the fixed seat and the projection equipment to move up and down or pitch along the extending direction of the first shaft; therefore, the height adjustment of the projection equipment along the extension direction of the first shaft, the angle adjustment of the rotation around the first shaft, the pitching adjustment of the rotation around the second shaft with an included angle with the first shaft and the pitching adjustment of the rotation around the third shaft with an included angle with the first shaft and the second shaft are realized through the position adjustment support of the projection equipment. The adjustment is convenient, the precision is high, and the efficiency of position adjustment is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is an exploded view of a projection device position adjustment bracket according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a first perspective of a structure of the fixing base shown in FIG. 1;

FIG. 3 is a second perspective view of the fixing base shown in FIG. 2;

fig. 4 is a schematic structural diagram of another structure of a fixing seat in a position adjustment bracket of a projection apparatus according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a first view angle of a first adjusting mechanism in a position adjusting bracket of a projection apparatus according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of the first driving assembly in FIG. 5;

fig. 7 is a schematic structural diagram of a second view angle of the first adjusting mechanism in the position adjusting bracket of the projection apparatus according to the embodiment of the present application;

FIG. 8 is a schematic diagram illustrating adjustment of a first adjustment mechanism and a second adjustment mechanism in a position adjustment bracket of a projection apparatus according to an embodiment of the present disclosure;

FIG. 9 is a schematic view of the second transmission member of FIG. 7;

FIG. 10 is an exploded schematic view of the first and second adjustment mechanisms of FIG. 1;

FIG. 11 is an exploded view of another embodiment of a position adjustment bracket for a projection device;

FIG. 12 is an exploded view of the third adjustment mechanism of FIG. 11 from a first perspective;

fig. 13 is an exploded view of the third adjustment mechanism of fig. 11 from a second perspective.

Icon: 100-a projection device position adjustment support; 101-a first axis; 103-a second axis; 105-a third axis; 110-a fixed seat; 112-a first side; 114-a second face; 116-a first transmission member; 1161-a rotating shaft; 1163-a second gear; 118-an identification sticker; 120-opening and closing the clamp; 121-a first direction; 123-a second direction; 125-installation area; 127-a first clamping mechanism; 1271-stop block; 1273-a first elastic member; 1275-a slide; 129-a second clamping mechanism; 130-a first adjustment mechanism; 131-a first adjustment seat; 133-a first drive assembly; 1331-a first drive; 1333-a first gear; 1335-a combination bearing; 137-a second transmission; 1371-an outer ring; 1373-a nut; 1375-a first slip axis; 1377-a second slip axis; 1379-a fixing member; 140-a second adjustment mechanism; 141-a second adjustment seat; 1410-abdicating holes; 143-a second drive assembly; 1431 — a second drive; 1433-screw; 150-a third adjustment mechanism; 151-third adjustment seat; 1510-perforating holes; 153-support wheels; 155-a drive wheel assembly; 1551-third driving element; 1553-driving wheel; 157-a steering wheel assembly; 1571-a fourth drive; 1573-a worm gear; 1575-worm; 160-projection device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.

The ultra-short focus projection device can project 100 inches or more of pictures within a distance of about 0.7 meters. When in projection, the projection picture position of the projector is required to be completely corresponding to the projection screen position, and a better projection effect can be obtained.

For ultra-short focal length projection devices, small movements in the position of the projector often result in large deviations in the projected image. And when the projection equipment is installed, the projection picture needs to be manually adjusted to a proper position of the projection screen.

However, when the projection image is adjusted, the position of the projection image needs to be adjusted repeatedly, the accuracy of the manual adjustment method is poor, and the repeated adjustment is troublesome, which results in low adjustment efficiency.

In view of the above problem, referring to fig. 1, an embodiment of the present application provides a position adjustment bracket 100 for a projection apparatus. The projection apparatus position adjustment bracket 100 can perform height adjustment in the extending direction of the first axis 101, angle adjustment by swinging around the first axis 101, pitch adjustment by swinging around the second axis 103, pitch adjustment by swinging around the third axis 105, and the like. In the embodiment of the present invention, the first axis 101, the second axis 103, and the third axis 105 may correspond to a Z axis, an X axis, and a Y axis in a coordinate system, respectively. The first axis 101, the second axis 103, and the third axis 105 may be perpendicular to each other, or may not be perpendicular to each other. When the first shaft 101, the second shaft 103 and the third shaft 105 are vertical to each other, a plane formed by the second shaft 103 and the third shaft 105 may be a horizontal plane, and the second shaft 103 and the third shaft 105 may extend horizontally in two directions perpendicular to each other in the horizontal plane; the plane formed by the second shaft 103 and the first shaft 101, and the plane formed by the third shaft 105 and the first shaft 101 may be vertical planes, and the first shaft 101 may extend in a vertical direction within the vertical planes.

It is understood that the extending direction of the first shaft 101 may be a height direction of the projection apparatus position adjustment bracket 100, the extending direction of the second shaft 103 may be a length direction of the projection apparatus position adjustment bracket 100, and the extending direction of the third shaft 105 may be a width direction of the projection apparatus position adjustment bracket 100.

The projection device position adjusting bracket 100 provided by the embodiment of the application can be suitable for 100-inch or even larger projection devices 160, can be applied to household projectors and engineering projectors, and can be used for adjusting the positions of household or engineering projectors needing to be adjusted. Alternatively, the system can be integrated into a laser television cabinet to be used together with a laser projector, or integrated with an engineering projector inside a large projector to be used together. The projection apparatus position adjusting bracket 100 provided in the embodiment of the present application has a wide application range, and may be used in any scene, such as a home, an office, a school, and an entertainment place, for example, and the application place is not limited in the present application.

Referring to fig. 1, the position adjustment bracket 100 of the projection apparatus may include a fixing base 110, a first adjustment mechanism 130, and a second adjustment mechanism 140. The fixing base 110 is used for carrying and fixing the projection device 160, and providing a supporting function for the projection device 160, and the projection device 160 is placed or installed on the top of the fixing base 110. The first adjusting mechanism 130 is installed below the fixing base 110, and is configured to drive the fixing base 110 to drive the projection device 160 to rotate around the first axis 101, that is, to adjust an angular position of the projection device 160 in the left-right direction. The second adjusting mechanism 140 is disposed below the first adjusting mechanism 130, and is configured to drive the first adjusting mechanism 130 to drive the fixing base 110 to perform a lifting motion or a pitching motion, that is, to adjust a height position of the projection apparatus 160 in a vertical direction and an angle position of the projection apparatus 160 in an up-down direction.

Specifically, referring to fig. 2, 3 and 4, the fixing base 110 is a thin plate structure and includes a first surface 112 and a second surface 114 opposite to each other. The projection device 160 is fixedly mounted at the middle position of the first surface 112 of the fixing base 110.

Optionally, as shown in fig. 2, a mounting label 118 is disposed at a corner position of the first surface 112 of the fixing base 110 corresponding to the mounting area 125 of the projection device 160. The area enclosed by the installation labels 118 exactly matches the size of the projection device 160, so that when a user installs the projection device 160, the user can adjust the position of the projection device 160 by comparing the position of the installation labels 118, and a relatively ideal fixed position can be obtained.

Further, a silicone anti-slip pad may be attached to the surface of the first surface 112 of the fixing base 110, which is beneficial for the projection device 160 to be stably mounted on the fixing base 110.

In consideration of the fact that the models, sizes and specifications of the projection devices 160 are not completely consistent at present, in order to improve the universality of the projection device position adjusting bracket 100, the projection device position adjusting bracket can be suitable for projection devices 160 with various specifications. In an alternative embodiment, referring to fig. 3, the first surface 112 of the fixing base 110 is provided with an opening and closing clamp 120. The opening and closing jig 120 can be elastically adjusted within a certain size range to adapt to projection devices 160 of different sizes.

The opening and closing jig 120 may include a first clamping mechanism 127 and a second clamping mechanism 129. The first clamping mechanism 127 and the second clamping mechanism 129 are arranged in pairs, and the first clamping mechanism 127 is arranged oppositely along the first direction 121, and the second clamping mechanism 129 is arranged oppositely along the second direction 123. The first clamping mechanism 127 is slidably connected to the fixing base 110 along a first direction 121, and the second clamping mechanism 129 is slidably connected to the fixing base 110 along a second direction 123. The first direction 121 and the second direction 123 form an included angle, and a mounting area 125 for fixing the projection device 160 is enclosed by the first clamping mechanism 127 and the second clamping mechanism 129. Since the first clamping mechanism 127 and the second clamping mechanism 129 are elastically connected with respect to the fixing base 110, after the projection device 160 is installed, the projection device 160 can be naturally clamped and positioned to the middle position of the fixing base 110 under the elastic clamping action of the first clamping mechanism 127 and the second clamping mechanism 129.

Specifically, the first clamping mechanism 127 may include a stopper 1271 and a first elastic member 1273. The stop 1271 is extended along a direction perpendicular to the first direction 121, the first elastic member 1273 is elastically connected to a side of the stop 1271 facing away from the mounting region 125, and the first elastic member 1273 provides a pre-tightening pushing force to the stop 1271 so that the stop 1271 can clamp the projection device 160 in the mounting region 125. The fixing base 110 is provided with a sliding portion 1275 along the first direction 121 in match with the stopper 1271, and the stopper 1271 is slidably coupled to the sliding portion 1275.

It is understood that when the sliding portion 1275 is a sliding slot, the stop 1271 includes a sliding block matching with the sliding slot, and the sliding block is embedded in the sliding slot. Under the pre-tightening thrust of the first elastic member 1273, the stopper 1271 slides along the sliding groove toward the mounting region 125, thereby clamping and positioning the projection device 160 located in the mounting region 125. When the sliding portion 1275 is a sliding rail, the stopper 1271 includes a sliding slot matching with the sliding rail, and the stopper 1271 is clamped on the sliding rail. Under the pre-tightening thrust of the first elastic member 1273, the stopper 1271 slides along the extension of the slide rail toward the mounting region 125, so as to clamp the projection device 160 in the mounting region 125. Considering that the projection device 160 is installed in the installation area 125, when the sliding portion 1275 is a sliding rail, the sliding rail may interfere with the projection device 160, which is not favorable for the installation stability of the projection device 160. In the embodiment of the present application, the sliding portion 1275 is designed as a sliding groove.

Further, the second clamping mechanism 129 may include a spring stopper disposed at both sides of the mounting region 125 along the second direction 123. The spring stopper may include a stopper and a second elastic member, the second elastic member is elastically connected to the stopper, and the second elastic member is located on a side of the stopper away from the mounting region 125, and the second elastic member is configured to provide a pre-tightening thrust to the stopper. And the center position of the mounting area 125 formed by the first clamping mechanism 127 and the second clamping mechanism 129 is coincident with the center position of the first transmission piece 116.

It will be appreciated that the resilient displacement of first resilient member 1273, the length of slider 1275, and the range of size adjustment of projection device 160 in first direction 121 match. In other words, the sliding length of the first elastic member 1273 pushing the stopper 1271 along the sliding portion 1275 should satisfy the size adjustment range of different projection devices 160 along the first direction 121, and the projection device 160 is limited along the first direction 121 by the first clamping mechanism 127. Similarly, the rebound displacement of the spring stop block matches with the size adjustment range of the projection device 160 along the second direction 123, and the projection device 160 is limited along the second direction 123 by the second clamping mechanism 129.

Alternatively, the first direction 121 and the second direction 123 are perpendicular, and the first direction 121 is parallel to one side of the projection device 160, and the second direction 123 is parallel to the other side of the projection device 160, so that projection devices 160 with different specifications and sizes can be clamped and positioned at the center of the mounting area 125. It should be noted that when the external shape of the projection device 160 is other shapes, such as circular, triangular, etc., the specific structures of the first holding mechanism 127 and the second holding mechanism 129 may be modified adaptively for the purpose of clamping the projection device 160. The present application is not particularly limited in this regard, as long as the projection device 160 can be clamped and fixed at the center of the mounting area 125 by the opening and closing clamp 120.

Referring to fig. 4, the first transmission member 116 is fixedly connected to the second surface 114 of the fixing base 110, that is, the first transmission member 116 and the projection apparatus 160 are respectively located on two opposite sides of the fixing base 110. The first transmission member 116 is used for cooperating with the first adjustment mechanism 130 and driving the fixing base 110 to rotate around the first shaft 101.

Optionally, the first transmission member 116 is installed at a central position of the fixing base 110, and the rotation shaft 1161 of the first transmission member 116 coincides with the installation shaft (not shown in the figure) of the projection apparatus 160.

Referring to fig. 5, 6 and 7, the first adjusting mechanism 130 is disposed on a surface of the fixed base 110 close to the first transmission member 116, and the first adjusting mechanism 130 may include a first adjusting base 131, a first driving assembly 133 and a second transmission member 137. The first driving assembly 133 and the second transmission member 137 are respectively disposed on the first adjusting seat 131, wherein the first driving assembly 133 is in transmission connection with the first transmission member 116 disposed on the fixing seat 110, and is used for providing a driving force for the first transmission member 116. The second transmission member 137 is used for being in transmission connection with the second adjusting mechanism 140, so that the second transmission member 137 is driven by the second adjusting mechanism 140 to move, and further drives the fixing base 110 to move synchronously.

Specifically, the first driving assembly 133 includes a first driving member 1331 and a first gear 1333 in transmission connection with the first driving member 1331, and the first gear 1333 is in key connection with the power output shaft of the first driving member 1331, so that the first driving member 1331 drives the first gear 1333 to rotate synchronously. In cooperation with the first driving assembly 133, the first transmission member 116 includes a rotating shaft 1161 and a second gear 1163 (see fig. 3). The rotating shaft 1161 is fixedly connected to the fixing base 110, the second gear 1163 is connected to the rotating shaft 1161, and the second gear 1163 is in meshing transmission with the first gear 1333 of the first driving assembly 133. So that the first driving member 1331 drives the first gear 1333 to rotate, the first gear 1333 drives the second gear 1163 to rotate, and the second gear 1163 drives the rotating shaft 1161 to rotate, so that the fixing base 110 rotates around the first shaft 101 synchronously.

Optionally, the first driving element 1331 is a stepping motor, and can rotate in a forward and reverse direction, so as to drive the fixed seat 110 to swing around the first shaft 101 in a clockwise or counterclockwise direction. By setting the rotation speed and duration of the stepping motor, the fixing base 110 can drive the projection device 160 to swing around the first shaft 101 within a range of ± 10 degrees. It can be understood that the swing angle of the fixing base 110 driving the projection device 160 to swing around the first shaft 101 may be adjusted according to actual requirements, for example, the swing angle may be set to swing around the first shaft 101 within a range of ± 5 degrees, and the specific swing angle is not limited and is determined according to the actual application occasion and the actual required adjustment range of the projection device 160.

Alternatively, the first gear 1333 may be a pinion gear and the second gear 1163 may be a bull gear. The power output shaft of the stepping motor is in key connection with the pinion gear to realize synchronous rotation, and power is transmitted to the bull gear and drives the bull gear to rotate through meshing transmission of the pinion gear and the bull gear. Since the number of teeth of the pinion gear is smaller than that of the rack gear, the rotational speed of the pinion gear is greater than that of the rack gear during meshing transmission, so that the output rotational speed of the first driving assembly 133 can be reduced. The swing direction and the swing angle of the fixed seat 110 are controlled by the rotation of the power output shaft of the stepping motor, and the angle adjusting precision of the fixed seat 110 during swinging along the first shaft 101 is improved by the meshing transmission of the pinion and the bull gear.

In order to avoid the situation that the first gear 1333 and the second gear 1163 are axially misaligned when being matched due to installation errors. Optionally, the tooth width of the first gear 1333 is larger than that of the second gear 1163, so that even if some installation errors exist during fitting installation, the actual meshing tooth width of the first gear 1333 and the second gear 1163 can be ensured, the connection strength of the gears is improved, and the service life is prolonged.

The gear ratio of the first gear 1333 and the second gear 1163 is equal to the ratio of the number of teeth of the second gear 1163 to the number of teeth of the first gear 1333. It can be understood that, in the meshing transmission of the first gear 1333 and the second gear 1163, when the transmission ratio of the first gear 1333 and the second gear 1163 is too large, the size of the second gear 1163 is large, which results in that the overall size of the adjusting bracket is large and the second gear 1163 is inconvenient to machine; when the gear ratio of the first gear 1333 and the second gear 1163 is too small, the reduction efficiency of the gears is low. To avoid the above disadvantages, the transmission ratio of the first gear 1333 and the second gear 1163 should be too large or too small, and optionally, the transmission ratio should be adaptively selected according to the requirements of the motor and the structural design.

The projection device position adjusting bracket 100 provided by the embodiment of the application is placed on a desktop when in use, and the projection device 160 is installed on the fixing base 110. The first driving component 133 drives the first transmission member 116 to rotate, and optionally, the first driving component 133 further includes a combination bearing 1335 in order to provide a certain supporting effect on the fixed seat 110 during the rotation. Referring to fig. 6, the combination bearing 1335 is fixedly connected to the first adjusting seat 131, and one end of the rotating shaft 1161 of the first transmission member 116, which is far away from the fixing seat 110, rotatably penetrates through the combination bearing 1335. The combination bearing 1335 fixes and supports the fixing base 110 and the projection apparatus 160, and the fixing base 110 can rotate more smoothly relative to the first adjusting mechanism 130 through the combination bearing 1335 under the action of gear transmission. The combined bearing 1335 may bear both axial force and radial force, and optionally, the combined bearing 1335 may adopt a combination of a thrust bearing and a rolling bearing, thereby achieving the purposes of high transmission precision and low noise.

Referring to fig. 7 and 8, the second adjusting mechanism 140 is located on a surface of the first adjusting mechanism 130 away from the fixing base 110. The second adjusting mechanism 140 may include a second adjusting base 141 and a second driving component 143, the second driving component 143 is disposed on the second adjusting base 141, and the second driving component 143 is in transmission connection with the second transmission component 137, so as to drive the first adjusting mechanism 130 to drive the fixing base 110 to move up and down along the first shaft 101, or to drive the fixing base 110 to perform a pitching motion by providing a plurality of second driving components 143 and mutually matching the driving assemblies to perform a pitching motion, thereby adjusting a pitching angle.

Optionally, the number of the second transmission members 137 on the first adjusting mechanism 130 is the same as that of the second driving assemblies 143 on the second adjusting mechanism 140, and the second transmission members correspond to the second driving assemblies 143 one by one. In order to realize the lifting movement or the pitching movement along the first shaft 101, the number of the second transmission members 137 is at least three, and the at least three second transmission members 137 are not located on the same straight line. When the number of the second transmission members 137 is three and is not located on the same straight line, the three second transmission members 137 form a triangular shape.

When the second driving assembly 143 drives all the second transmission members 137 to ascend to the same height position, the first adjusting mechanism 130 drives the fixing base 110 to be parallel to the second adjusting mechanism 140, and only the heights along the first axis 101 are different, that is, the fixing base 110 and the projection apparatus 160 are driven to ascend and descend along the first axis 101.

When the second driving assembly 143 drives all the second transmission members 137 to ascend to different height positions, the first adjusting mechanism 130 drives the fixed base 110 to incline relative to the second adjusting mechanism 140, that is, the first adjusting mechanism 130 drives the fixed base 110 and the projection apparatus 160 to tilt relative to the second adjusting mechanism 140 around the second axis 103 or the third axis 105, so as to adjust the angle of the projection image of the projection apparatus 160 in the vertical direction.

Optionally, the second driving assembly 143 includes a second driving member 1431 and a screw 1433, and the screw 1433 is in transmission connection with the second driving member 1431. The screw 1433 is connected to the second adjusting seat 141 and extends along the direction of the first shaft 101, and is in transmission connection with the second transmission member 137 through the screw 1433, so that the rotation of the screw 1433 can be converted into the axial movement of the second transmission member 137 along the screw 1433.

Specifically, referring to fig. 9, second transmission 137 may include an outer ring 1371, a nut 1373, a first sliding shaft 1375, and a second sliding shaft 1377. The nut 1373 is rotatably sleeved on the screw 1433, and the nut 1373 is converted into a movement along the axial direction of the screw 1433 along with the rotation of the screw 1433. Meanwhile, the nut 1373 is rotatably embedded in the outer ring 1371, and the first sliding shaft 1375 and the second sliding shaft 1377 are connected to the outer ring 1371 in a radial direction in a cross shape. When connected, the first sliding shaft 1375 is connected to two radial sides of the outer ring 1371, and the first sliding shaft 1375 is slidably connected to the first adjusting seat 131; second sliding shaft 1377 is rotatably coupled to nut 1373 after being radially inserted into outer ring 1371, so that outer ring 1371 can rotate around second sliding shaft 1377 relative to nut 1373 when nut 1373 moves axially along screw 1433.

Optionally, an included angle is formed between first sliding shaft 1375 and second sliding shaft 1377, second sliding shaft 1377 is used to rotate outer ring 1371 around second sliding shaft 1377, and first sliding shaft 1375 is used to drive outer ring 1371 to move axially along second sliding shaft 1377. It is understood that first slip axis 1375 and second slip axis 1377 may be perpendicular or substantially perpendicular.

Since first sliding shaft 1375 can drive outer ring 1371 to move along its axial direction, second transmission member 137 optionally further includes fixing member 1379. Fixing member 1379 fixed connection is in first regulation seat 131, and the sliding hole that link up is seted up to fixing member 1379, and first axle 1375 that slides is slidable wears to locate the sliding hole, and when sliding, first axle 1375 that slides drives outer lane 1371 synchronous slip. When the second driving component 143 drives the second transmission member 137 to move, the automatic adjustment can be performed according to different states of the movement of at least three second transmission members 137, so as to avoid the problems of jamming and unsmooth adjustment.

The number of the second transmission members 137 is three, which will be described in detail. Referring to fig. 7 and 10, the central axes of the three second transmission members 137 are sequentially connected to form a regular triangle.

In the first case: when the three second driving assemblies 143 correspondingly drive the three second transmission members 137 to move synchronously and the moving speed and the height position after the movement are the same, the first adjusting mechanism 130 drives the fixed base 110 to move parallel along the first axis 101 direction relative to the second adjusting mechanism 140, that is, the height position of the projection apparatus 160 is adjusted. During adjustment, the second driver 1431 drives the screw 1433 to rotate, the nut 1373 moves in the axial direction of the screw 1433, and no relative movement occurs between the nut 1373 and the outer ring 1371.

In the second case: in the view of fig. 7, when the moving speed and the height position after the movement of the two lower second transmission members 137 are the same, but the moving speed and the height position after the movement of the two lower second transmission members 137 are different from those of the two upper second transmission members 137, the first adjusting mechanism 130 drives the fixed base 110 to perform a pitching motion relative to the second adjusting mechanism 140 around the connection line of the central axes of the two lower second transmission members 137, so that the first adjusting mechanism 130 drives the fixed base 110 to tilt relative to the second adjusting mechanism 140.

Similarly, when only two of the three second transmission members 137 have the same height position after moving, the first adjusting mechanism 130 can drive the fixing base 110 to perform pitching motion around the connection line of the central axes of the two second transmission members 137 having the same height position with respect to the second adjusting mechanism 140.

In the third case: when the height positions of the three second transmission members 137 after movement are different, a plane is formed by the three points, and the first adjusting mechanism 130 can be adjusted arbitrarily to drive the fixing base 110 to perform angle pitching movement in different directions relative to the second adjusting mechanism 140.

In the second and third cases, the first adjusting mechanism 130 is disposed obliquely relative to the second adjusting mechanism 140, and the nut 1373 is rotatably connected to the screw 1433, and the screw 1433 is vertically connected to the second adjusting seat 141. In this case, on the one hand, the outer ring 1371 rotates around the second sliding shaft 1377 by an angle relative to the nut 1373, and after the rotation, the included angle between the outer ring 1371 and the nut 1373 is equal to the included angle between the first adjusting seat 131 and the second adjusting seat 141. On the other hand, the outer ring 1371 slides a distance along the sliding hole of the fixing member 1379 along with the first sliding shaft 1375, and the outer ring 1371 is located right above the screw 1433 after moving, and the outer ring 1371 compensates the offset along the horizontal plane generated by the inclination of the first adjusting seat 131 relative to the second adjusting seat 141 through the sliding of the first sliding shaft 1375, so that the screw 1433 drives the nut 1373 to transmit without the jamming phenomenon, thereby avoiding the interference problem during the linkage adjustment.

Further, with continued reference to fig. 9, in the first case, in order to enable the second transmission member 137 to be driven by the second driving assembly 143, the outer ring 1371 and the nut 1373 can be automatically centered. Elastic members are disposed on the first sliding shaft 1375 and the second sliding shaft 1377, the elastic member sleeved on the first sliding shaft 1375 is located on a surface of the fixing member 1379 away from the outer ring 1371, and the elastic member sleeved on the second sliding shaft 1377 is compressed between the protrusions of the outer ring 1371 and the end of the second sliding shaft 1377, so as to keep the nut 1373 centered and not slide freely when the first adjusting mechanism 130 and the fixing base 110 are parallel to each other with respect to the second adjusting mechanism 140.

Alternatively, the first adjusting seat 131 and the second adjusting seat 141 may be both box-shaped structures (as shown in fig. 10), and the first driving assembly 133, the combined bearing 1335 and the second transmission piece 137 may be embedded in the box body of the first adjusting seat 131. The second driving member 1431 of the second driving assembly 143 can be embedded in the box body of the second adjusting seat 141, and the screw 1433 is perpendicular to the second adjusting seat 141 and is in transmission connection with the second transmission member 137. The number of transmission mechanisms is reduced, and the whole volume is reduced.

The projection device position adjusting bracket 100 is designed by adopting a three-layer structure of the fixed seat 110, the first adjusting mechanism 130 and the second adjusting mechanism 140, and can realize height adjustment along the first shaft 101, angle adjustment rotating around the first shaft 101, pitch adjustment rotating around the second shaft 103 and pitch adjustment rotating around the third shaft 105. The adjustment is accurate, the volume is small, and the light and thin development trend of products is facilitated. Through the structural design of the second transmission piece 137, it can be ensured that when the nut 1373 is in transmission fit with the screw 1433, the deflection and the slippage of the outer ring 1371 on the first adjusting seat 131 are small, and the structure is simple; in addition, the driving piece is arranged in the box body, so that the overall size is further reduced.

Further, the position adjustment bracket 100 of the projection apparatus provided in the embodiment of the present application may be controlled by a brushless direct current PWM (Pulse Width Modulation) technique, so as to implement closed-loop control. The pulse width modulation technology is an analog control mode, and modulates the bias of a transistor base or a MOS tube grid according to the change of corresponding load to change the conduction time of the transistor or the MOS tube, thereby changing the output of the switching voltage-stabilized power supply. This way the output voltage of the power supply can be kept constant when the operating conditions change, which is a very effective technique for controlling an analog circuit by means of the digital signal of the microprocessor.

As another embodiment, referring to fig. 11, the projection apparatus position adjusting bracket 100 may further include a third adjusting mechanism 150. The third adjusting mechanism 150 is connected to a surface of the second adjusting mechanism 140 away from the first adjusting mechanism 130, and the third adjusting mechanism 150 is configured to drive the second adjusting mechanism 140, the first adjusting mechanism 130, the fixing base 110, and the projection device 160 to integrally move on the desktop along the second axis 103 or the third axis 105, i.e., the function of integral walking is achieved.

Specifically, referring to fig. 12 and 13, the third adjusting mechanism 150 includes a driving wheel assembly 155, the driving wheel assembly 155 can drive the second adjusting mechanism 140, the second adjusting mechanism 140 drives the first adjusting mechanism 130, and the first adjusting mechanism 130 drives the fixing base 110 to move linearly along the extending direction of the second shaft 103.

Specifically, the third adjusting mechanism 150 further includes a third adjusting seat 151 and a supporting wheel 153, and the third adjusting seat 151 is disposed on a surface of the second adjusting mechanism 140 facing away from the first adjusting mechanism 130. The third adjusting seat 151 is a plate-shaped structure, and the third adjusting seat 151 is provided with a through hole 1510. The supporting wheels 153 are rotatably connected to a surface of the third adjusting seat 151 facing away from the second adjusting mechanism 140, the number of the supporting wheels 153 is multiple, and the multiple supporting wheels 153 are located in the circumferential direction of the third adjusting seat 151. The driving wheel assembly 155 is connected to a surface of the third adjusting seat 151 near the second adjusting mechanism 140, and the driving wheel assembly 155 can pass through the through hole 1510 of the third adjusting seat 151 to contact with a tabletop or a working surface. When the driving wheel assembly 155 is operated, the driving wheel assembly 155 can drive the adjusting bracket to move along the table top or the working surface as a whole.

Further, the drive wheel assembly 155 can include a third drive member 1551 and a drive wheel 1553 in driving connection. The third driving member 1551 is connected to the third adjusting seat 151, the driving wheel 1553 penetrates through the through hole 1510, and the bottom surface of the driving wheel 1553 and the bottom surface of the supporting wheel 153 are located on the same plane, and the third driving member 1551 drives the driving wheel 1553 to rotate so as to drive the projection apparatus position adjusting bracket 100 to move linearly along a certain direction.

Alternatively, the support wheels 153 may be universal wheels, which function to support rolling. The third driving member 1551 is used for driving the driving wheel 1553 to rotate, and the third driving member 1551 can rotate in a forward and reverse direction. When the projection device position adjusting bracket 100 is disposed on a desktop, the driving wheel 1553 contacts with the desktop and has a certain friction force under the action of gravity, and the driving wheel 1553 can move linearly back and forth along the desktop in a certain direction by the third driving member 1551.

In order to provide the projection device position adjustment bracket 100 with a steering function when the projection device position adjustment bracket moves linearly on the table top, the third adjustment mechanism 150 may further include a steering wheel assembly 157 disposed on the third adjustment base 151, wherein the steering wheel assembly 157 is in transmission connection with the driving wheel assembly 155 to steer the driving wheel assembly 155 around the first shaft 101.

Specifically, the steering wheel assembly 157 includes a fourth driver 1571, a worm wheel 1573, and a worm 1575. Wherein, the power output shaft of the fourth driving member 1571 is in transmission connection with the worm 1575, and the worm 1575 is in transmission connection with the worm wheel 1573. Under the driving force of the fourth driving member 1571, the rotation of the worm 1575 can be converted into the rotation of the worm wheel 1573, and the rotation direction of the worm 1575 is converted into the rotation direction of the worm wheel 1573 perpendicular to each other.

In operation, the driving wheel assembly 155 is fixedly connected to the worm wheel 1573, and the driving wheel assembly 155 rotates synchronously with the worm wheel 1573, so that the driving wheel assembly 155 can rotate around the first shaft 101. The fourth driving member 1571 can drive the worm wheel 1573 to rotate forward and backward through the worm 1575, and the rotation angle can reach 360 degrees. When the adjusting bracket needs to walk along the direction of the second shaft 103, the fourth driving member 1571 drives the worm wheel 1573 to rotate through the worm 1575, so that the radial direction of the driving wheel 1553 in the driving wheel assembly 155 is parallel to the second shaft 103, and the third driving member 1551 drives the driving wheel 1553 to move linearly back and forth along the direction of the second shaft 103. When the adjusting bracket needs to walk along the direction of the third shaft 105, the fourth driving member 1571 drives the worm wheel 1573 to rotate 90 degrees through the worm 1575, and the worm wheel 1573 drives the driving wheel assembly 155 to rotate 90 degrees integrally, so that the radial direction of the driving wheel 1553 in the driving wheel assembly 155 is parallel to the third shaft 105. The third drive member 1551 then drives the drive wheel 1553 back and forth in a linear motion along the third axis 105.

In other words, the third adjusting mechanism 150 drives the whole adjusting bracket to be adjusted in a front-back equal straight line relative to the desktop or the workbench within a certain range through the driving wheel assembly 155; the whole adjusting bracket is driven to rotate relative to the desktop or the workbench within a certain range by the steering wheel component 157, so that walking at any angle such as front and back, left and right directions and the like is realized, and the projected image of the projection equipment 160 is matched with the position of the projection screen more ideally.

It will be appreciated that in order to avoid interference of the second adjustment seat 141 with the drive wheel assembly 155 or the steerable wheel assembly 157, and also to reduce the overall structural bulk, the drive wheel assembly 155 and the steerable wheel assembly 157 may be mounted on the third adjustment seat 151. Optionally, the second adjusting seat 141 is provided with a yielding hole 1410 matched with the driving wheel assembly 155 and the steering wheel assembly 157, so that the driving wheel assembly 155 and the steering wheel assembly 157 can pass through the yielding hole 1410, interference with the second adjusting seat 141 is avoided, the height of the overall structure is reduced, and the weight of the overall structure is also reduced.

According to the projection device position adjusting bracket 100 provided by the embodiment of the application, the driving wheel assembly 155 and the steering wheel assembly 157 are embedded in the space formed between the third adjusting seat 151 and the second adjusting seat 141, so that the structure is compact, and the volume is small. Meanwhile, due to the three-layer structural design of the fixing seat 110, the first adjusting mechanism 130 and the second adjusting mechanism 140, the height adjustment of the projection device 160 along the first axis 101, the angle adjustment of the rotation around the first axis 101, the pitch adjustment of the rotation around the second axis 103, the pitch adjustment of the rotation around the third axis 105, the position adjustment along the second axis 103 and the position adjustment along the third axis 105 can be realized. The whole scheme is not only light and handy, can reach diversified intelligent regulation moreover, is applicable to domestic laser projector.

The projection equipment position adjusting support 100 provided by the embodiment of the application can realize intelligent four-axis or six-axis displacement and angle adjustment, is favorable for adjusting the projection image of the projection equipment 160 and the projection screen more ideally, has a compact structure, is accurate in position or angle adjustment, and further improves the adjusting efficiency.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A projection device position adjustment support, comprising:

the fixing seat is used for bearing and fixing the projection equipment, and a first transmission piece is fixedly connected to one surface of the fixing seat, which is far away from the projection equipment;

the first adjusting mechanism is arranged on one surface of the fixed seat, which is close to the first transmission piece, and comprises a first adjusting seat, a first driving assembly and a second transmission piece, wherein the first driving assembly and the second transmission piece are arranged on the first adjusting seat and are in transmission connection so as to drive the fixed seat to rotate around a first shaft; and

second adjustment mechanism, second adjustment mechanism set up in first adjustment mechanism deviates from the one side of fixing base, second adjustment mechanism include the second adjust the seat with set up in second drive assembly on the seat is adjusted to the second, second drive assembly with the transmission of second driving medium is connected, the second driving medium drives first regulation seat, first regulation seat drives fixing base elevating movement or every single move.

2. The projection device position adjustment bracket of claim 1, wherein the second transmission comprises an outer ring, a nut, a first sliding shaft, and a second sliding shaft;

the nut is rotatably embedded in the outer ring, the first sliding shaft is connected to two radial sides of the outer ring and is slidably connected to the first adjusting seat, the second sliding shaft is arranged on the outer ring in a penetrating mode along the radial direction and is rotatably connected with the nut, and an included angle is formed between the first sliding shaft and the second sliding shaft;

the second driving assembly comprises a second driving piece and a screw rod in transmission connection with the second driving piece, and the screw rod is connected to the second adjusting seat along the extension direction of the first shaft and is in threaded connection with the nut.

3. The projection device position adjusting bracket of claim 2, wherein the number of the second transmission members is at least three, the number of the second driving assemblies is equal to that of the second transmission members, and the second driving assemblies and the second transmission members correspond to each other one by one, and the at least three second transmission members are not located on the same straight line;

when the moving heights of the nuts in all the second transmission pieces are equal, the first adjusting mechanism can drive the fixed seat to lift relative to the second adjusting mechanism along the extension direction of the first shaft;

when the moving heights of the nuts in all the second transmission parts are not equal, the first adjusting mechanism can drive the fixed seat to perform pitching motion around a second shaft with an included angle with the first shaft relative to the second adjusting mechanism, or perform pitching motion around a third shaft with an included angle with the first shaft and the second shaft.

4. The bracket of claim 2, wherein the second transmission member further includes a fixing member, the fixing member is fixedly connected to the first adjusting base, the fixing member has a sliding hole, and the first sliding shaft slidably penetrates through the sliding hole.

5. The projection apparatus position adjustment bracket of claim 1, wherein the first driving assembly includes a first driving member and a first gear in transmission connection with the first driving member, the first driving member includes a rotating shaft and a second gear, the rotating shaft is fixedly connected to the fixing base, the second gear is in key connection with the rotating shaft and in meshing transmission with the first gear, and the first driving member drives the fixing base to swing around the first shaft through the first driving member.

6. The bracket of claim 5, wherein the first driving assembly further comprises a combination bearing, the combination bearing is fixedly connected to the first adjusting base, and one end of the rotating shaft, which is far away from the fixing base, rotatably penetrates through the combination bearing.

7. The bracket for adjusting the position of a projection apparatus according to claim 1, further comprising a third adjusting mechanism disposed on a surface of the second adjusting mechanism facing away from the first adjusting mechanism, wherein the third adjusting mechanism includes a driving wheel assembly, the driving wheel assembly drives the second adjusting mechanism, the second adjusting mechanism drives the first adjusting mechanism, and the first adjusting mechanism drives the fixing base to move linearly along an extending direction of a second shaft having an included angle with the first shaft.

8. The bracket of claim 7, wherein the third adjusting mechanism further comprises a third adjusting seat and a supporting wheel, the third adjusting seat is disposed on a surface of the second adjusting mechanism facing away from the first adjusting mechanism, the driving wheel assembly is connected to a surface of the third adjusting seat near the second adjusting mechanism, and the supporting wheel is rotatably connected to a circumferential direction of the surface of the third adjusting seat facing away from the second adjusting mechanism.

9. The bracket of claim 8, wherein the third adjusting seat defines a through hole, the driving wheel assembly includes a third driving member and a driving wheel, the third driving member is connected to the third adjusting seat, the driving wheel is disposed through the through hole and located on the same plane as the supporting wheel, and the third driving member drives the bracket to move linearly through the driving wheel.

10. The projection device position adjustment bracket of claim 7, wherein the third adjustment mechanism further comprises a steering wheel assembly drivingly coupled to the drive wheel assembly to steer the drive wheel assembly about the first axis.

11. The bracket of claim 10, wherein the steering wheel assembly comprises a fourth driving member, a worm wheel and a worm, the fourth driving member is connected with the worm, the worm is in transmission connection with the worm wheel, and the driving wheel assembly is fixedly connected with the worm wheel and synchronously rotates with the worm wheel.

12. The projection device position adjusting bracket according to any one of claims 1 to 11, wherein a surface of the fixing base facing away from the first transmission member is provided with an opening/closing clamp, the opening/closing clamp includes a first clamping mechanism and a second clamping mechanism, the first clamping mechanism is disposed opposite to and slidably connected to the fixing base along a first direction, the second clamping mechanism is disposed opposite to and slidably connected to the fixing base along a second direction having an included angle with the first direction, and the first clamping mechanism and the second clamping mechanism enclose a mounting area for fixing the projection device.

13. The bracket of claim 12, wherein the first clamping mechanism comprises a stopper and a first elastic member, the fixing base is provided with a sliding portion along the first direction, the stopper is slidably connected to the sliding portion, and the first elastic member is mounted on a surface of the stopper facing away from the mounting area.