CN210629671U - Transmission assembly, driving mechanism and laser television - Google Patents

Abstract

The application belongs to the technical field of laser projection equipment, and discloses a transmission assembly which comprises a first transmission piece, a second transmission piece and a third transmission piece, wherein the first transmission piece comprises a first end surface; a second drive member including a second end face, the second drive member configured to be rotatable; the second end face is opposite to the first end face; a damping member configured to generate a damping force on a first end surface of the first transmission member and a second end surface of the second transmission member. The damping force of the first transmission piece and the second transmission piece is transmitted to rotate through the damping piece, so that the first transmission piece and the second transmission piece can synchronously rotate. When the damping is invalid, the connection between the first transmission piece and the second transmission piece is invalid and does not rotate synchronously any more. And the structure is stable, the structure is compact, and the application range is wide. A drive mechanism and a laser television are also disclosed.

Description

Transmission assembly, driving mechanism and laser television

Technical Field

The application relates to the technical field of laser projection equipment, for example to a transmission assembly, a driving mechanism and a laser television.

Background

Laser projection equipment, such as a laser television, is a new terminal display equipment, and mainly comprises a laser projector and a screen. The light-emitting end of the laser projector is a lens, and if the lens is unprotected, dust or foreign objects can be scratched, so that the picture display effect is influenced. Therefore, it is a common practice to make a protective slide that can be opened and closed, and to control the opening and closing of the slide by a driving mechanism. When the product is used, the sliding cover is controlled to be opened, and projection and watching are carried out; when the camera is shut down and cannot be seen, the sliding cover is controlled to be closed, and the lens is prevented from being accumulated with dust and damaged.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: in the process of driving to open or close the sliding cover, if an object (a human body part or a foreign object) is located in an opening or closing area of the sliding cover, the driving mechanism still continues to be driven, and the driving mechanism is damaged, for example, a motor is damaged, a transmission gear is damaged, or the object is injured.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a transmission assembly, a driving mechanism and a laser television, which are used for solving the technical problem that when an object is positioned in an opening or closing area in the opening or closing process of the existing sliding cover, the driving mechanism is easily damaged or the object is easily injured.

In some embodiments, a transmission assembly includes,

the first transmission piece comprises a first end surface, and is configured to rotate;

a second transmission member including a second end surface, the second transmission member being configured to be rotatable; the second end surface is opposite to the first end surface;

the damping member is configured to generate a damping force on a first end surface of the first transmission member and a second end surface of the second transmission member.

In some embodiments, a drive mechanism includes,

a drive member including a drive output;

in the transmission assembly, the rotation driving end of the first transmission member or the second transmission member of the transmission assembly is disposed at the driving output end.

In some embodiments, a laser television comprises the aforementioned driving mechanism.

The transmission assembly, the driving mechanism and the laser television provided by the embodiment of the disclosure can realize the following technical effects:

in the transmission assembly of the embodiment of the disclosure, the damping force of the first transmission member and the second transmission member is transmitted to rotate through the damping member, so that the first transmission member and the second transmission member can synchronously rotate. Therefore, when the damping is failed, the connection between the first transmission piece and the second transmission piece is failed, and the first transmission piece and the second transmission piece do not rotate synchronously. Therefore, when the sliding cover is applied to a driving mechanism of a laser television, the technical problem that the driving mechanism is easily damaged or an object is injured when the object is located in an opening or closing area in the opening or closing process of the sliding cover can be solved. And the damping force of the transmission component is generated on the first end surface of the first transmission piece and the second end surface of the second transmission piece, the damping transmission distance is short, the structure is stable, and meanwhile, the structure is compact and the application range is wide.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated in the accompanying drawings, which correspond to the accompanying drawings, and which do not constitute a limitation on the embodiments, in which elements having the same reference number designation are shown as similar elements, and in which:

FIG. 1 is a schematic structural diagram of a transmission assembly provided in an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a transmission assembly provided in an embodiment of the present disclosure;

FIG. 3 is an enlarged view of a portion of the structure of FIG. 2;

FIG. 4 is a schematic structural diagram of a transmission assembly provided in an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a driving mechanism provided in the embodiments of the present disclosure;

reference numerals:

110. a first transmission member; 111. a first end face; 112. a groove; 113. mounting holes; 114. a first rotary drive shaft; 120. a second transmission member; 121. a second end face; 122. a boss; 123. a limiting concave part; 124. a second rotary drive shaft; 130. a damping member; 131. a limiting member; 132. a screw; 133. a damping rotating shaft; 140. a support; 141. a first bracket; 142. a second bracket; 200. a drive member; 210. a drive output; 211. a gear shaft; 220. a drive gear; 230. a rack; 300. A slide cover.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

In this document, it is to be understood that relational terms such as first and second, and the like, may be used solely to distinguish one entity or structure from another entity or structure without necessarily requiring or implying any actual such relationship or order between such entities or structures.

In this document, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present disclosure and simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and thus should not be construed as limiting the present disclosure.

In this document, unless otherwise specified and limited, it is to be understood that the terms "mounted," "connected," and "connected" are used broadly and may be, for example, mechanically or electrically connected, or may be connected through two elements, directly or indirectly through an intermediate medium, and those skilled in the art will understand the specific meaning of the terms as they are used in a specific situation.

In this context, it is to be understood that the term "plurality" means two or more.

The embodiment of the disclosure discloses a transmission assembly. As shown in fig. 1 to 4, the transmission assembly, including,

a first transmission member 110 including a first end surface 111, the first transmission member 110 being configured to be rotatable;

a second transmission piece 120 including a second end face 121, the second transmission piece 120 being configured to be rotatable; the second end surface 121 is opposite to the first end surface 111;

the damping member 130 is configured to generate a damping force on the first end surface 111 of the first transmission member 110 and the second end surface 121 of the second transmission member 120.

In the transmission assembly of the embodiment of the disclosure, the damping force of the first transmission member and the second transmission member is transmitted to rotate through the damping member, so that the first transmission member and the second transmission member can synchronously rotate. Therefore, when the damping is failed, the connection between the first transmission piece and the second transmission piece is failed, and the first transmission piece and the second transmission piece do not rotate synchronously. And the damping force of the transmission component is generated on the first end surface of the first transmission piece and the second end surface of the second transmission piece, the damping transmission distance is short, the structure is stable, and meanwhile, the structure is compact and the application range is wide.

For example, when the transmission assembly of the embodiment of the present disclosure is applied to a sliding cover driving mechanism in a laser television, the rotation driving end of the first transmission member is connected to a driving member (e.g., a motor). In the process of normally driving the sliding cover to open or close, the driving moment generated by the driving piece is smaller than the torque damping of the damping piece, and then the first transmission piece and the second transmission piece synchronously rotate, so that the sliding cover is driven to normally open or close. When an object (such as a foreign body or a human body part) is positioned in an opening or closing area of the sliding cover, so that the opening or closing of the sliding cover is blocked, and the moment generated by the driving piece exceeds the torque damping of the damping piece, the first transmission piece and the second transmission piece slip and the transmission is disconnected, so that the damage of a driving mechanism is avoided, or the object is prevented from being injured.

In the embodiment of the present disclosure, the first transmission member 110 and the second transmission member 120 may be gears, and the rotation axes of the two may coincide, and the two rotate synchronously; or may be misaligned so that one of the transmission members is eccentric. It is determined according to the driving manner of the applied driving mechanism. Optionally, the rotation axis of the first transmission member 110 coincides with the rotation axis of the second transmission member 120.

In the embodiment of the disclosure, a rotation driving shaft (e.g., a first rotation driving shaft 114) is disposed on the other end surface of the first transmission member 110 opposite to the first end surface 111, so as to facilitate driving the first transmission member 110 to rotate. Similarly, a rotation driving shaft (e.g., a second rotation driving shaft 124) is disposed on the other end surface of the second transmission member 120 opposite to the second end surface 121, so as to facilitate driving the rotation of the second transmission member 120.

In the embodiment of the present disclosure, the damping force (e.g., torque damping) generated by the damping member 130 may be set according to actual conditions. For example, not greater than the torque produced by the driver; or the clamping force generated when the damping force is fed back to the driven part (such as a sliding cover) is not required to clamp the limb; alternatively, the damping force can be overcome and the slider can be manually pushed without the driver being driven.

In some embodiments, the damping member 130 employs a spring or a damping spindle.

The damping member 130 is not limited to be disposed in such a manner that the damping force is generated on the first end surface of the first transmission member and the second end surface of the second transmission member. In some embodiments, the damping member 130 is disposed on the first transmission member or the second transmission member in an axial direction or a radial direction. So that damping forces are generated on the first end face of the first transmission piece and the second end face of the second transmission piece.

In some embodiments, as shown in fig. 1, the first transmission member 110 or the second transmission member 120, in which the damping member 130 is provided in the axial direction, is movable in the axial direction; the damping member 130 is configured to generate an axial pressing force between the first end surface 111 of the first transmission member 110 and the second end surface 121 of the second transmission member 120. The axial pressing force generates a frictional damping force between the first end surface 111 and the second end surface 121, and the frictional damping force causes the first transmission member 110 and the second transmission member 120 to rotate synchronously.

For example, as shown in fig. 1, the damping member 130 is axially disposed on the rotation driving shaft (the second rotation driving shaft 124) of the second transmission member 120, the second transmission member 120 is axially movable along the second rotation driving shaft 124, and the elastic force of the damping member 130 pushes the second transmission member 120 toward the first transmission member 110, so that a frictional damping force is generated between the first end surface 111 and the second end surface 121.

Alternatively, the damper 130 employs a spring.

In some embodiments, as shown in fig. 2, the damping member 130 is disposed on the first transmission member 110 and the second transmission member 120 in a radial direction, and is configured to generate a damping force in a circumferential direction on the first end surface 111 of the first transmission member 110 and the second end surface 121 of the second transmission member 120. The radially arranged damping element 130 generates a pressure force on the axis of the second transmission element 120, and when the drive torque of the first transmission element 110 is greater than the torque damping of the radially arranged damping element, the first transmission element and the second transmission element slip and the transmission is disconnected.

Alternatively, the damper 130 employs a spring.

In some embodiments, as shown in fig. 2, the first end surface 111 of the first transmission piece 110 and the second end surface 121 of the second transmission piece 120 are provided with a groove 112 and a boss 122 which are in nesting fit; a damper 130 is disposed radially between the groove 112 and the boss 122. The groove 112 and the boss 122 facilitate the radial arrangement of the damping member, and the groove 112 and the boss 122 can rotate relatively, so as to provide the coaxiality of the first transmission member 110 and the second transmission member 120. The grooves 112 are disposed on the first end surface 111, and the bosses 122 are disposed on the second end surface 121. Of course, the groove 112 may also be disposed on the second end surface 121, and the boss 122 is disposed on the first end surface 111. And is not limited. The boss 122 is cylindrical, and the groove 112 is cylindrical in shape, so as to ensure that the boss and the groove can rotate relatively. The boss 122 may also be in the shape of a torus.

Alternatively, the groove 112 is integrally formed with the first transmission member 110; the boss 122 is integrally formed with the second transmission member 120.

In some embodiments, as shown in fig. 3, the sidewall of the groove 112 is radially opened with a mounting hole 113, and the damping member 130 is radially disposed in the mounting hole 113; a limit concave part 123 is arranged on the side wall of the boss 122 corresponding to the mounting hole 113; the free end of the damping member 130 is located in the restraining recess 123. Increasing the stability and reliability of the damping member 130. Of course, the installation holes 113 and the limiting concave parts 123 can be arranged at different positions, that is, the installation holes 113 are formed on the bosses 122, and the limiting concave parts 123 are formed on the inner side walls of the grooves 112, so that the damping effect can be achieved.

Optionally, as shown in fig. 3, an end of the free end of the damper 130 is provided with a limiting member 131, and the limiting member 131 is disposed in the limiting recess 123. Alternatively, the limiting member 131 is a body with a rounded surface, such as a sphere or a cylinder. When the position is stably limited, smooth surfaces are utilized to ensure that the damping is successfully disabled.

Alternatively, as shown in fig. 3, one end of the damper 130 is fixedly provided with a screw 132, as a fixed end, the mounting hole 113 is a threaded hole, and the damper 130 is disposed in the mounting hole 113 by screwing the screw 132 into the mounting hole 113.

In some embodiments, the mounting hole 113 is formed on the sidewall of the groove 112, the mounting hole 113 is a through hole, and the fixing position of the damping member 130 is adjustable. Alternatively, the fixing position of the damping member 130 may be adjusted by adjusting the screw position of the screw 132 in the mounting hole 113. The pressure generated on the axis of the damping element 130 towards the second transmission element 120 can thus be adjusted to adjust the damping force.

In some embodiments, as shown in fig. 4, the damping member 130 is disposed axially between the first end surface 111 of the first transmission member 110 and the second end surface 121 of the second transmission member 120; and is configured to generate a circumferential damping force between the first end surface 111 of the first transmission member 110 and the second end surface 121 of the second transmission member 120.

Optionally, an axial mounting hole is formed in the first end surface 111 of the first transmission member 110, and the damping member 130 is axially disposed in the axial mounting hole; a limiting concave part is arranged on the second end surface 121 corresponding to the axial mounting hole; the free end of the damping member 130 is located in the restraining recess. Increasing the stability and reliability of the damping member 130. Of course, the positions of the axial mounting hole and the limiting recess can be interchanged, that is, the axial mounting hole 113 is formed on the second end surface 121, and the limiting recess is formed on the first end surface 111, so that the damping effect can be achieved. The specific structure can refer to the structure schematic diagram of the damper 130 shown in fig. 2 and 3 when it is arranged in the radial direction, as long as the structure is arranged in the axial direction.

Alternatively, as shown in fig. 4, the damping member 130 employs a damping rotating shaft 133, and both ends of the damping rotating shaft 133 are respectively disposed on the first end surface 111 and the second end surface 121 of the second transmission member 120. The damping force of the damping rotating shaft 133 generates a circumferential damping force between the first end surface 111 of the first transmission member 110 and the second end surface 121 of the second transmission member 120. Simple structure and reliability. In this embodiment, the number of the damping shafts 133 is not limited, and may be one or more.

Alternatively, as shown in fig. 4, the damping rotating shaft 133 is one, and the axis of the one damping rotating shaft coincides with the axes of the first transmission member 110 and the second transmission member 120.

Optionally, the damping rotating shaft 133 is a plurality of shafts, and the damping rotating shafts are uniformly distributed between the first end surface 111 of the first transmission member 110 and the second end surface 121 of the second transmission member 120. For example, on a circle centered on the axes of the first transmission member 110 and the second transmission member 120.

In some embodiments, the transmission assembly, further comprising,

the bracket 140, the first transmission member 110 and the second transmission member 120 are rotatably assembled to the bracket 140, such that the first end surface 111 of the first transmission member 110 and the second end surface 121 of the second transmission member 120 are oppositely disposed. The transmission assembly can be formed as a separate structural unit. And the coaxial assembly of the first transmission piece 110 and the second transmission piece 120 can be ensured, and the transmission effectiveness can be ensured. And provides a limit for the damping member 130 when the damping member 130 is axially disposed in the manner as described in fig. 1.

Alternatively, as shown in fig. 1, the bracket 140 includes a first bracket 141 rotatably assembled with the first transmission member 110; a second bracket 142 for rotatably mounting the second transmission member 120; the first holder 141 and the second holder 142 are disposed opposite to each other such that the second end surface 121 is disposed opposite to the first end surface 111.

The disclosed embodiment also discloses a driving mechanism, as shown in fig. 5, the driving mechanism includes,

a driver 200 including a drive output 210;

the rotation driving end of the transmission component, the first transmission member 110 or the second transmission member 120 of the transmission component, is disposed at the driving output end 210.

In the embodiment of the present disclosure, the driving element 200 may be a motor, and the driving output end 210 may be an output shaft of the motor, or an output end after a reversing gear is added to the output shaft of the motor, which is not limited. As shown in fig. 5, a gear shaft 211, for example, a gear shaft of a worm structure, is provided on the output end of the driver 200.

The driving mechanism further comprises a driving gear 220 and a rack 230, wherein the driving gear 220 is meshed with the second transmission piece 120 and the rack 230 respectively. Under the driving of the driving component 200, the driving rack 230 moves, and the rack 230 in turn drives the driven component (for example, the sliding cover 300 of the laser television) to move.

In the driving mechanism of the embodiment of the disclosure, when an object (e.g., a foreign object or a body part of a person) is located in an opening or closing area of the sliding cover during opening or closing of the driven member (the sliding cover 300), so that the opening or closing of the sliding cover is blocked, and when a torque generated by the driving member exceeds a torque damping of the damping member, the first driving member and the second driving member slip and disconnect the transmission, thereby avoiding damage to the driving mechanism or injury to the object.

The embodiment of the disclosure also discloses a laser television, which comprises the driving mechanism.

In the embodiment of the present disclosure, the laser television includes a housing and a sliding cover 300, the driving components such as the driving component 200 and the transmission component are fixedly disposed on the housing of the laser television, and the rack 230 is fixedly disposed on the sliding cover 300 of the laser television.

The present application is not limited to the structures that have been described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (11)

1. A transmission assembly, comprising,

a first transmission member including a first end surface, the first transmission member being configured to be rotatable;

a second drive member including a second end face, the second drive member configured to be rotatable; the second end face is opposite to the first end face;

a damping member configured to generate a damping force on a first end surface of the first transmission member and a second end surface of the second transmission member.

2. A drive assembly according to claim 1, wherein the damping member is disposed axially or radially on the first and/or second drive members.

3. The transmission assembly according to claim 2, wherein the first transmission member or the second transmission member, in which the damping member is provided in the axial direction, is movable in the axial direction; and the damping piece is configured to generate axial extrusion force between the first end surface of the first transmission piece and the second end surface of the second transmission piece.

4. The transmission assembly of claim 2, wherein the damping member is radially disposed on the first transmission member and the second transmission member and configured to generate a circumferential damping force on the first end surface of the first transmission member and the second end surface of the second transmission member.

5. The transmission assembly according to claim 4, wherein the first end surface of the first transmission member and the second end surface of the second transmission member are provided with grooves and convex rings which are in nested fit; the damping member is disposed radially between the groove and the raised ring.

6. The transmission assembly according to claim 5, wherein the side wall of the groove is provided with a mounting hole along a radial direction, and the damping member is arranged in the mounting hole along the radial direction; a limiting concave part is arranged on the side wall of the convex ring corresponding to the mounting hole; the free end of the damping piece is positioned in the limiting concave part.

7. The drive assembly of claim 6, wherein the mounting hole is a through hole and the fixed position of the damping member is adjustable.

8. The transmission assembly of claim 2, wherein the damping member is disposed axially between a first end surface of the first transmission member and a second end surface of the second transmission member; and is configured to generate a circumferential damping force between the first end surface of the first transmission member and the second end surface of the second transmission member.

9. The drive assembly of any of claims 1 to 8, further comprising,

the first transmission piece and the second transmission piece are rotatably assembled on the support, and the first end face of the first transmission piece and the second end face of the second transmission piece are oppositely arranged.

10. A drive mechanism, comprising,

a drive member including a drive output;

a drive assembly according to any one of claims 1 to 9, the rotary drive end of the first or second drive member of the drive assembly being provided at the drive output.

11. A laser television comprising a drive mechanism according to claim 10.

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