CN211293585U

CN211293585U - Projector with a light source

Info

Publication number: CN211293585U
Application number: CN201922439509.7U
Authority: CN
Inventors: 黄永成
Original assignee: SHENZHEN YINGZHI TECHNOLOGY CO LTD
Current assignee: SHENZHEN YINGZHI TECHNOLOGY CO LTD
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-08-18
Anticipated expiration: 2029-12-30

Abstract

The application relates to the technical field of display equipment, and discloses a projector, includes: the upper machine body can turn over relative to the lower machine body through the damping rotating shaft; the surface of the upper machine body, which faces the lower machine body, is a first surface, and the surface of the lower machine body, which faces the upper machine body, is a second surface; the projector further includes: a first magnet disposed on the first surface and a second magnet disposed on the second surface; and a repulsive force can be generated between the first magnet and the second magnet so as to provide support for the upper body. The projector provided by the embodiment of the application has longer service life.

Description

Projector with a light source

Technical Field

The utility model relates to a display device technical field, in particular to projector.

Background

A projector is a device that can project images or videos onto a curtain or a wall surface. The projector can be connected to a PC, a mobile phone, a play box, a game machine, a DV, or other multimedia devices through different interfaces, so as to play corresponding video signals. Compared with a liquid crystal television, the size of an image projected by a projector is not limited by the size of liquid crystal, and the image sharing device has a good sharing effect, so that the device is widely applied to families, offices, schools and entertainment places.

In the multimedia projector in the prior art, the optical machine is often relatively fixed in the shell, the output angle of the picture cannot be adjusted, and the optical machine is quite unchanged when used in an unfixed scene.

In view of this, the chinese patent application No. 2010101261871 discloses a projector, which includes a projector main body, in which an optical engine is disposed; a rotating shaft is arranged behind the projector, and the orientation angle of the optical machine can be adjusted by the rotating shaft.

However, merely providing a rotating shaft is not sufficient because the carriage is generally relatively heavy and thus difficult to fix well after adjusting the angle of the carriage. In the patent of the invention in China, a bracket is also arranged below the optical machine and used for supporting the optical machine. However, with the help of an additional bracket, the bracket needs to be provided with a slot, so that the complexity of the equipment is increased, and the dustproof performance is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve or partially solve the above technical problem, an embodiment of the present application provides a projector including:

the upper machine body can turn over relative to the lower machine body through the damping rotating shaft;

the surface of the upper machine body, which faces the lower machine body, is a first surface, and the surface of the lower machine body, which faces the upper machine body, is a second surface;

the projector further includes: a first magnet disposed on the first surface and a second magnet disposed on the second surface;

repulsion force can be generated between the first magnet and the second magnet so as to provide support for the upper machine body.

Alternatively, the first magnet and the second magnet are both permanent magnets, and the first magnet and the second magnet are disposed facing each other in a manner such that magnetic poles thereof repel each other.

Optionally, the device further comprises a locking piece which is connected with and fixes the upper body and the lower body together.

Optionally, at least one of the first magnet and the second magnet is an electromagnet.

Optionally, the method further comprises:

the sensor is in communication connection with the electromagnet and is used for acquiring the relative position of the upper machine body relative to the lower machine body;

the electromagnet adjusts the magnetic output state of the electromagnet according to the relative position acquired by the sensor.

Optionally, the sensor is a distance sensor, and the sensor is used for acquiring the relative distance between the first surface and the second surface;

when the relative distance of the electromagnets is smaller than the preset distance, generating suction to adsorb another magnet;

when the relative distance of the electromagnet is larger than the preset distance, the electromagnet generates repulsive force to repel the other magnet.

Optionally, when the relative distance of the electromagnet is greater than the preset distance, the output power of the electromagnet increases with the increase of the relative distance.

Optionally, the method further comprises: the sensor is a grating encoder which is used for acquiring the rotation angle of the damping rotating shaft;

when the rotation angle of the electromagnet is smaller than a preset angle, generating suction to adsorb another magnet;

when the rotation angle of the electromagnet is larger than the preset angle, the electromagnet generates repulsive force to repel the other magnet.

Optionally, when the rotation angle of the electromagnet is greater than the preset angle, the output power of the electromagnet increases with the increase of the rotation angle.

Optionally, the damping rotating shaft comprises a middle shaft rod, a shaft sleeve and a shaft lug connected with the shaft sleeve;

the shaft lug is fixed on the upper machine body through a bolt, and the middle shaft rod is fixed on the lower machine body through a bolt.

Compared with the prior art, the embodiment of the application can realize the auxiliary support of the damping rotating shaft under the premise of not grooving and not increasing an additional mechanical structure by means of the interaction of magnetic force, obviously prolongs the service life of the damping rotating shaft on the premise of ensuring the dustproof, waterproof and simplified structural performance of the projector equipment, and also improves the opening and closing hand feeling of the upper body of the projector.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be clear that the drawings in the following description are only intended to illustrate some embodiments of the present application, and that for a person skilled in the art, it is possible to derive from these drawings, without inventive effort, technical features, connections or even method steps not mentioned in the other drawings.

FIG. 1 is a schematic view of a projector according to an embodiment of the present application when closed;

fig. 2 is a schematic view of a projector according to an embodiment of the present application when it is turned on;

FIG. 3 is a schematic view of a damped hinge for use with a projector according to embodiments of the present application;

fig. 4 is a schematic view of a projector according to an embodiment of the present application when a third magnet and a fourth magnet are provided.

Description of reference numerals:

1. mounting the machine body; 11. a first surface; 2. a lower machine body; 3. a damping rotating shaft; 31. a middle shaft lever; 32. a shaft sleeve; 33. a shaft lug; 4. an optical machine; 51. a first magnet; 52. a second magnet; 53. a third magnet; 54. And a fourth magnet.

Detailed Description

The present application will be described in further detail below with reference to the accompanying drawings. The structure of the projector and the like are schematically simplified and shown in the drawings.

Implementation mode one

A first embodiment of the present application provides a projector, as shown in fig. 1 and 2, including:

the device comprises an upper machine body 1, a lower machine body 2 and a damping rotating shaft 3 connecting the upper machine body 1 and the lower machine body 2, wherein an optical machine 4 is arranged in the upper machine body 1, and the upper machine body 1 can overturn relative to the lower machine body 2 through the damping rotating shaft 3;

the surface of the upper machine body 1 opposite to the lower machine body 2 is a first surface 11, and the surface of the lower machine body 2 opposite to the upper machine body 1 is a second surface;

the projector further includes: a first magnet 51 disposed on the first surface 11 and a second magnet 52 disposed on the second surface;

a repulsive force can be generated between the first magnet 51 and the second magnet 52 for providing support to the upper body 1.

For the projector, when the projector is divided into the upper body 1 and the lower body 2, the components can be respectively installed in the upper body 1 and the lower body 2, so that the overall structure of the projector is more compact, and the portability of the projector is improved. Specifically, the optical engine 4 may be mounted to the upper body 1 of the projector, and power supply parts and signal transmission parts, such as a transformer and various signal transfer ports, are provided in the lower body 2. When the projector is a portable projector, a battery can be arranged in the lower body 2 so as to be still used under the condition of no commercial power.

In order to allow the optical engine 4 to freely adjust its projection angle, in the embodiment of the present application, the upper body 1 and the lower body 2 are connected by the damping rotating shaft 3. Accordingly, the upper body 1 can be rotated with respect to the lower body 2 so as to adjust the irradiation angle of the light machine 4.

Since the optical machine 4 is provided with a large number of lenses therein, and a large-sized heat dissipation mechanism needs to be installed because a large amount of heat is dissipated during use, the upper machine body 1 tends to have a heavy weight. When the upper machine body 1 is supported only by the damping rotating shaft 3, the requirement on the damping size of the damping rotating shaft 3 is high. However, if an excessive damping is provided, the external force required for rotating the upper body 1 is large, which easily causes the damping shaft 3 to be worn more quickly and shortens the service life.

Accordingly, in the embodiment of the present application, an additional supporting force is provided to the upper body 1 by means of the repulsive force generated by the first magnet 51 disposed at the first surface 11 and the second magnet 52 disposed at the second surface. Compared with the scheme of supporting through a support, the magnetic suspension support structure has the advantages that when the magnetic suspension support structure is adopted, grooves are not needed to be formed in the second surface, guide rails are not needed to be arranged, or other mechanical structures which possibly generate gaps are not needed, so that the dustproof and waterproof performance is better, and the service life is longer.

As for the first magnet 51 and the second magnet 52, in the embodiment of the present application, optionally, the first magnet 51 and the second magnet 52 are both permanent magnets, and the first magnet 51 and the second magnet 52 are disposed opposite to each other in a manner of repelling magnetic poles. By setting the first magnet 51 and the second magnet 52 as permanent magnets, it is possible to always ensure that a certain supporting force exists, thereby offsetting a part of the pressure generated by the self weight of the upper body 1, and further protecting the damping rotating shaft 3.

In addition, when the upper body 1 is too heavy, stressed or the damping rotating shaft 3 is too fatigued to cause the damping rotating shaft 3 to fail, the repulsive force between the first magnet 51 and the second magnet 52 can also provide a buffer for the falling of the upper body 1, thereby playing a good role in protecting the lenses in the optical machine 4.

It is understood that the first and

second magnets

51 and 52 may be disposed at corresponding positions close to the damping shaft 3, thereby providing a greater repulsive force. Even more, the first and

second magnets

51 and 52 may cover the entire first and

second surfaces

11 and 52, respectively, to make the repulsive force more stable.

Further alternatively, a locking member (not shown) may be further included, and the locking member is coupled to and fixes the upper body 1 and the lower body 2 together. By the locking fastener, the upper machine body 1 and the lower machine body 2 can still be ensured to be closely attached under the repulsive force of the first magnet 51 and the second magnet 52, thereby improving the use convenience.

It will be appreciated by those skilled in the art that the catch member may be a conventional movable latch and slot arrangement. Still further, referring to fig. 4, the locking member may also be a third magnet 53 disposed on the first surface 11, and a fourth magnet 54 disposed on the second surface.

The third magnet 53 and the fourth magnet 54 are also both permanent magnets, and the third magnet 53 and the fourth magnet 54 are disposed facing each other with their poles attracting each other. Furthermore, the third magnet 53 is disposed on the side farther from the damping spindle 3 than the first magnet 51, and the fourth magnet 54 is also disposed on the side farther from the damping spindle 3 than the second magnet 52.

As such, when the upper body 1 is rotated in a direction to approach the lower body 2, as the third and

fourth magnets

53 and 54 approach each other, the attractive force therebetween is gradually increased, and finally, the attractive force therebetween is made larger than the repulsive force between the first and

second magnets

51 and 52, so that the upper body 1 and the lower body 2 can be brought together.

When the upper body 1 is rotated in a direction away from the lower body 2, as the third magnet 53 and the fourth magnet 54 are far away from each other, the increase of the distance between the first magnet 51 and the second magnet 52 is far greater than the increase of the distance between the first magnet 51 and the second magnet 52, so that the weakening rate of the attractive force between the first magnet 51 and the second magnet 52 is far greater than the weakening rate of the repulsive force between the first magnet 51 and the second magnet 52, and finally the attractive force between the first magnet 51 and the second magnet 52 is smaller than the repulsive force between the first magnet 51 and the second magnet 52, so that the repulsive force between the first magnet 51 and the second magnet 52 can provide sufficient support for the weight of the upper body 1.

It is worth mentioning that the damping spindle 3 may have various configurations for the embodiments of the present application. This embodiment presents one of the possible configurations, so alternatively, as shown in fig. 3, the damping spindle 3 comprises a central shaft 31 and a sleeve 32, and a shaft lug 33 connected with the sleeve 32;

the axle lugs 33 are fixed on the upper body 1 by bolts, the middle axle rod 31 is fixed on the lower body 2 by bolts, and the damping can be arranged inside the damping rotating shaft 3.

The bolt fastening has excellent stability, and the fixedly arranged middle shaft rod 31 provides good support, so that the damping rotating shaft 3 can stably work for a long time.

Second embodiment

A second embodiment of the present application also provides a projector, which is different from the first embodiment mainly in that, in the first embodiment of the present application, both the first magnet 51 and the second magnet 52 are permanent magnets; in the second embodiment of the present application, the first magnet 51 and the second magnet 52 may not be permanent magnets.

Specifically, at least one of the first and

second magnets

51 and 52 may be an electromagnet.

The electromagnet has the characteristic of generating magnetic force after being electrified, and can provide a directional supporting effect for the projector of the application when needed.

For example, when the projector is powered on, the electromagnet can start to work. After the user adjusts the angle of the upper body 1, the magnetic force provided by the electromagnet can provide support for the self weight of the upper body 1.

Yet further optionally, in an embodiment of the present application, the method may further include:

a sensor (not shown) in communication connection with the electromagnet, the sensor being used for acquiring the relative position of the upper body 1 with respect to the lower body 2;

In the embodiment of the present application, in the "relative position of the upper body 1 with respect to the lower body 2", the referred "relative position" may have various meanings depending on the type of the sensor. For example, when the sensor is a distance sensor, this relative position may refer to a distance measured by the sensor between specific points respectively located between the upper body 1 and the lower body 2. When the sensor is an angle sensor, it may refer to an angle rotated between the upper body 1, particularly the first surface 11, and the lower body 2, particularly the second surface. All this is not all the more.

In the embodiment of the present application, the "output state of the magnetic force" may include not only the magnitude of the magnetic force but also the direction of the magnetic force, and the like. It can be understood that the output state of the magnetic force can be adjusted by adjusting the current magnitude and the current direction passing through the electromagnet, so that the output of the magnetic force is matched with the position of the upper body 1.

Taking the sensor as a distance sensor, the sensor can be used to acquire the relative distance between the first surface 11 and the second surface;

on the basis, when the relative distance of the electromagnet is smaller than the preset distance, the electromagnet generates suction to adsorb another magnet;

For example, the distance sensor may employ an optical distance sensor, such as an infrared distance measuring sensor or the like. When infrared light is irradiated from the second surface to the first surface 11, the distance between the second surface and the second surface measurement point and the variation trend can be known by receiving the infrared light returned by the first surface 11 at the second surface. The parameters obtained by the distance sensor can be used as an important reference for the output mode of the electromagnet.

It will be appreciated that the predetermined distance may be between 0.2cm and 1cm, and in particular the predetermined distance may be around 0.5 cm. When the relative distance is smaller than the preset distance, it can be determined that the upper body 1 and the lower body 2 are in a close contact state. At this time, the electromagnet can generate attraction to adsorb another magnet, so that the electromagnet can take the function of the locking piece into account.

On the contrary, when the relative distance of the electromagnet is greater than the preset distance, the electromagnet generates a repulsive force to repel another magnet, so that the electromagnet can provide the repulsive force to support the weight of the upper body 1.

In the embodiment of the application, by means of the switchable characteristic of the magnetic force output direction of the electromagnet, the electromagnet can also be used for adsorbing the upper machine body 1, so that an additionally arranged locking piece can be omitted, and the structure of the projector is further simplified.

It is worth mentioning that when the relative distance of the electromagnets is smaller than the preset distance, the electromagnets can also stop working, and no suction force or repulsion force is generated, so that the effect of saving energy is achieved.

Further alternatively, the output power of the electromagnet may be increased as the relative distance increases when the relative distance is greater than the preset distance.

It will be appreciated that the attractive or repulsive force of the battery iron generally decreases with increasing distance. Therefore, after the output power is related to the distance, the auxiliary support can be better provided, so that the damping rotating shaft 3 can bear uniform stress all the time.

In addition, although the influence is not obvious, the supporting force required to be provided by the electromagnet can be slightly reduced in the process of rotating the upper machine body 1 according to the stress analysis. This reduction may also be taken into account in the output power of the electromagnet.

Third embodiment

A third embodiment of the present application is also different from the second embodiment in that a sensor is described as an example of a distance sensor in the second embodiment of the present application; however, in the second embodiment of the present application, the sensor may be another kind of sensor.

For example, in the present embodiment, the sensor is a grating encoder for acquiring the rotation angle of the damping rotating shaft 3.

The grating encoder is a digital sensor integrating light, mechanical and electrical technologies, can measure the angular displacement or linear displacement with high precision, has the advantages of high measurement precision and strong anti-interference capability, and is widely applied to high-precision displacement measurement. Currently, a grating encoder has been widely used, and a typical application is a wheel of a mouse. The rotation angle and amplitude of the mouse wheel can be easily sensed by the grating encoder.

In the present embodiment, the grating encoder may be directly disposed inside the damping rotating shaft 3, or may be in transmission connection with a rotatable portion of the damping rotating shaft 3. The angle of the damping shaft 3 can be obtained very accurately by means of a grating encoder.

Accordingly, when the rotation angle of the electromagnet is smaller than the preset angle, the electromagnet generates an attraction force to attract the second magnet 52;

the electromagnet generates a repulsive force to repel the second magnet 52 when the rotation angle is greater than the preset angle.

As in the second embodiment, by virtue of the switchable characteristic of the magnetic force output direction of the electromagnet, the electromagnet can also be used to attract the upper body 1, so that an additional latch member can be omitted, and the structure of the projector can be further simplified.

Of course, when the rotation angle of the electromagnet is smaller than the preset angle, the electromagnet can also stop working, and no suction force or repulsion force is generated, so that the effect of saving energy is achieved.

Further optionally, when the rotation angle of the electromagnet is larger than the preset angle, the output power of the electromagnet is increased along with the increase of the rotation angle.

In summary, in each embodiment of the present application, by means of the interaction of magnetic force, on the premise that no slot is formed and no additional mechanical structure is added, the auxiliary support for the damping rotating shaft 3 can be realized, and on the premise that the dustproof, waterproof and simplified structural performance of the projector apparatus is ensured, the service life of the damping rotating shaft 3 is significantly prolonged, and the opening and closing hand feeling of the upper body 1 of the projector is also improved.

It is to be understood that the terminology used in the description of the embodiments herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.

It should be understood that although the terms first, second, third, etc. may be used in the embodiments of the present application to describe certain components, these components should not be limited by these terms. These terms are only used to distinguish one component from another. For example, a first certain component may also be referred to as a second certain component, and similarly, a second certain component may also be referred to as a first certain component, without departing from the scope of the embodiments of the present application.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

In the various embodiments described above, while, for purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated by those of ordinary skill in the art that the methodologies are not limited by the order of acts, as some acts may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, as may be understood by those of ordinary skill in the art.

Those of skill would further appreciate that the various illustrative logical blocks, modules, units, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, units, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

Finally, it should be noted that those skilled in the art will appreciate that embodiments of the present application present many technical details for the purpose of enabling the reader to better understand the present application. However, the technical solutions claimed in the claims of the present application can be basically implemented without these technical details and various changes and modifications based on the above-described embodiments. Accordingly, in actual practice, various changes in form and detail may be made to the above-described embodiments without departing from the spirit and scope of the present application.

Claims

1. A projector, characterized by comprising:

and a repulsive force can be generated between the first magnet and the second magnet so as to provide support for the upper body.

2. The projector according to claim 1, wherein the first magnet and the second magnet are both permanent magnets, and the first magnet and the second magnet are disposed facing each other in a manner of repelling magnetic poles.

3. The projector as claimed in claim 2, further comprising a locking member which connects and fixes the upper body and the lower body together.

4. The projector as claimed in claim 1, wherein at least one of the first magnet and the second magnet is an electromagnet.

5. The projector according to claim 4, further comprising:

the sensor is in communication connection with the electromagnet and is used for acquiring the relative position of the upper body relative to the lower body;

and the electromagnet adjusts the magnetic output state of the electromagnet according to the relative position acquired by the sensor.

6. The projector as claimed in claim 5, wherein the sensor is a distance sensor for acquiring a relative distance between the first surface and the second surface;

when the relative distance is smaller than a preset distance, the electromagnet generates attraction to adsorb another magnet;

and when the relative distance is greater than the preset distance, the electromagnet generates a repulsive force to repel the other magnet.

7. The projector according to claim 6, wherein the output power of the electromagnet increases as the relative distance increases when the relative distance is greater than a preset distance.

8. The projector according to claim 5, further comprising: the sensor is a grating encoder, and the grating encoder is used for acquiring the rotation angle of the damping rotating shaft;

when the rotation angle is smaller than a preset angle, the electromagnet generates suction to adsorb another magnet;

and when the rotation angle is larger than a preset angle, the electromagnet generates a repulsive force to repel the other magnet.

9. The projector according to claim 8, wherein the electromagnet outputs power which increases as the rotation angle increases when the rotation angle is larger than a preset angle.

10. The projector according to any one of claims 1 to 9, wherein the damping spindle includes a central shaft and a boss, and a boss coupled to the boss;