A projection screen with a rechargeable sound

Abstract

The application discloses a kind of projection screen with rechargeable sound, a kind of projection screen with rechargeable sound, including sound, it is characterized by: still include with the bottom bar of curtain bottom end fixed rod connecting piece, and the rod connecting piece is fixed with sound, the sound is equipped with the rechargeable battery of power supply for sound, the rod connecting piece is equipped with the contactable electric connection structure between curtain main body, the rechargeable battery can be charged by the contactable electric connection structure and external power supply conduction.Charging. The advantages of the above structure are: not only beautiful, but also do not need to occupy space storage additionally, and also do not affect the winding of curtain, and easy to install without changing the projection screen, so as to avoid the problem of occupying ground and desktop space and not beautiful, and do not need to plug in every time, so as to use more conveniently.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of sound, especially a kind of projection screen with rechargeable sound. BACKGROUND

[0002] Projection screen is common in office and life, generally used in film, office, home theater, large meeting and other occasions, to display image, video file tool.

[0003] The structure of ordinary projection screen generally includes screen main body, screen, and the bottom bar fixed to the bottom end of screen, screen can be rolled into screen main body, and the bottom bar can prevent screen from being completely rolled into screen main body and cannot be used normally, and the force of sagging is strengthened, so that the screen is more flat.

[0004] Ordinary projection screen needs to cooperate with projector and sound to realize complete play, but ordinary sound needs to occupy the ground or desktop space of room when using, and needs to occupy additional space when not using, and the power line of ground or desktop not only occupies space and is not beautiful, but also is troublesome to plug in, especially sometimes there is no suitable socket in place, and it needs to be connected, so the applicant designs a projection screen dedicated sound to solve the above problems. SUMMARY

[0005] In order to overcome the deficiencies of the prior art, the present application provides a projection screen with rechargeable sound.

[0006] The technical scheme adopted by the present application to solve its technical problems is:

[0007] A projection screen with rechargeable sound, comprising a sound, characterized in that: it further comprises a rod connecting piece fixed with the bottom bar at the bottom end of the screen, and the rod connecting piece is fixed with the sound, a rechargeable battery for powering the sound is arranged in the sound, a contactable electrical connection structure is arranged between the rod connecting piece and the screen main body, and the rechargeable battery can be connected with the external power supply through the contactable electrical connection structure to be charged.

[0008] The contactable electrical connection structure comprises a charging contact one and a charging contact two capable of contacting the charging contact one, the charging contact one is arranged on the screen main body and connected with the power supply, and the charging contact two is arranged on the rod connecting piece and connected with the rechargeable battery.

[0009] The charging contact one is mounted on the screen main body through a contact piece seat, the contact piece seat is provided with a mounting groove, the groove bottom of the mounting groove is provided with a contact hole, the charging contact one is mounted in the mounting groove, and one end is exposed to the bottom surface of the contact piece seat through the contact hole.

[0010] A charging circuit board is arranged in the mounting groove, and one end of the charging contact one is connected with the charging circuit board.

[0011] The contact piece seat is fixed to the curtain body through a seat connecting belt. The seat connecting belt includes belt one and belt two. The ends of belt one and belt two are provided with belt heads. Belt grooves are provided on the groove walls of the installation groove. Belt one and belt two pass through the corresponding belt grooves and the belt heads are located in the installation groove and are locked with the installation groove.

[0012] The first belt is provided with a clamping column, and the second belt is provided with a clamping hole matched with the corresponding clamping column.

[0013] The rod connecting member includes a rod connecting belt and a tightening structure. The rod connecting belt fixes the speaker to the bottom rod through the tightening structure, and the second charging contact is arranged on the rod connecting belt.

[0014] The tightening structure includes a plurality of adjustment holes arranged on the connecting belt, and the acoustic shell is provided with locking screw holes, and the locking screws pass through the corresponding adjustment holes and cooperate with the locking screw holes.

[0015] The second charging contact includes an upper contact piece and a lower contact piece. The upper contact piece is embedded in the rod connecting band, and an elastic piece is provided at the end of the upper contact piece. The upper contact piece includes an area that contacts the first charging contact piece, and the elastic piece contacts the lower contact piece.

[0016] The second charging contact comprises side panels arranged opposite to each other, and a socket is provided on the housing of the audio system. The side panels are inserted into the end cover through the socket and connected to the rechargeable battery.

[0017] The beneficial effects of the present invention are as follows: the present invention installs the speakers on the bottom rod through the rod connector, thereby avoiding the problem of additionally occupying the floor or desktop space in the room, and after the speakers are integrated with the projection screen, they are not only beautiful, but also do not require additional storage space, and do not affect the retraction of the screen, and are easy to install without requiring changes to the projection screen, and the speakers are provided with a rechargeable battery for powering the speakers, and a contactable electrical connection structure is provided between the rod connector and the screen body, and the rechargeable battery can be charged by being connected to an external power source through the contactable electrical connection structure, so that the power cord does not need to be directly connected to the speakers, but only needs to be connected to the contactable electrical connection structure, thereby avoiding the problem of occupying floor and desktop space and being unsightly, and there is no need to plug in a wire to connect to the power every time, so it is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and examples.

[0019] Figure 1 This is a structural diagram of the present invention in a winding and charging state;

[0020] Figure 2 It is a partial exploded structural diagram of the present invention;

[0021] Figure 3 It is the exploded structure diagram of the rod connector;

[0022] Figure 4 It is a structural diagram of the rod connection;

[0023] Figure 5 This is the contact seat and related exploded structure diagram;

[0024] Figure 6 This is the exploded structure diagram of the end. DETAILED DESCRIPTION

[0025] The advantages and features of the present disclosure and its implementation methods will be illustrated by the following embodiments described with reference to the accompanying drawings. However, the present disclosure can be embodied in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure will be comprehensive and complete and will fully convey the scope of the present disclosure to those skilled in the art. Furthermore, the present disclosure is limited only by the scope of the claims.

[0026] The shapes, sizes, proportions, angles and numbers disclosed in the drawings for describing the embodiments of the present disclosure are merely examples, and therefore the present disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, when a detailed description of a related known function or configuration is determined to be unnecessary to obscure the focus of the present disclosure, the detailed description will be omitted. Where “including”, “having” and “comprising” described in this specification are used, other components may be added unless “only” is used. Unless otherwise indicated, terms in the singular may include plural forms.

[0027] When explaining an element, although not explicitly described, the element is understood to include a range of error.

[0028] When describing a positional relationship, for example, when the positional relationship is described as "on," "above," "below," and "adjacent to," one or more parts may be arranged between two other parts, unless "immediately" or "directly" is used.

[0029] When describing a temporal relationship, for example, when a temporal order is described as “after,” “subsequently,” “next,” and “before,” discontinuous cases may be included unless “just” or “directly” is used.

[0030] It should be understood that although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of this disclosure.

[0031] As will be fully appreciated by those skilled in the art, the features of the different embodiments of the present disclosure may be coupled or combined with each other in part or in whole, and may cooperate with each other in various ways and be driven technically. The embodiments of the present disclosure may be performed independently of each other, or may be performed together in a mutually dependent relationship.

[0032] Reference Figures 1 to 6 The present invention discloses a rechargeable speaker for a projection screen. The screen main body 1 includes a square strip-shaped outer shell and a built-in reel and motor. One side of the screen 2 is fixed to the reel, so that the motor can drive the reel to rotate and drive the screen 2 to retract or extend. The screen main body 1 is a conventional design and is not a technical improvement point of this application, so the specific structure is not described in detail. In this application, the bottom rod 3 at the bottom end of the screen 2 is fixed to the speaker 4 through a rod connecting member. The speaker 4 is provided with a rechargeable battery (not shown in the figure) for powering the speaker 4. A contactable electrical connection structure is provided between the speaker 4 and the screen main body 1. The rechargeable battery can be charged by being connected to an external power source through the contactable electrical connection structure.

[0033] As shown in the figure, the contactable electrical connection structure includes a charging contact 1 5 and a charging contact 2 that can contact the charging contact 1 5. The charging contact 1 5 is arranged on the screen body 1 and connected to the power supply. The charging contact 2 is arranged on the rod connector and connected to the rechargeable battery. Therefore, when the charging contact 1 5 contacts the charging contact 2, the power supply can charge the rechargeable battery. As a further structure, the charging contact 1 5 is installed on the contact seat 8, and the contact seat 8 is installed on the screen body 1. Through the above structure, we can make full use of the retraction or expansion of the screen 2 to realize the charging and power-off of the rechargeable battery, and the screen 2 is used when it is expanded. During this time, the charging contact 1 5 is in contact with the charging contact 2, thereby the rechargeable battery is in a state of supplying power to the speaker 4, and the curtain 2 is rolled up when it is not in use. At this time, the charging contact 1 5 is in contact with the charging contact 2, thereby realizing automatic charging of the rechargeable battery. The above process does not require manual operation, and there is no need to increase the structure for controlling the contact and separation of the charging contact 1 5 and the charging contact 2. Moreover, the speaker 4 of the present application needs to be raised and lowered. If the power cord is used for power supply, it needs to move with the speaker 4, so the wiring is also more troublesome and needs to be coordinated with the speaker 4. Therefore, the present application adopts a contactable electrical connection structure instead of the power cord, thereby avoiding the above problems and being more beautiful.

[0034] As a further structure, the charging contact 1 is installed on the curtain body 1 through the contact seat 7. The contact seat 7 is provided with a mounting groove 8 and a seat cover 9. The seat cover 9 is used to protect the internal structure and facilitate assembly. The bottom of the mounting groove 8 is provided with a contact hole 10. The charging contact 1 5 is installed in the mounting groove 8, and one end is exposed to the bottom surface of the contact seat 7 through the contact hole 10. As the preferred structure of this application, the contact hole 10 is located at the bottom of the mounting groove 8. The charging contact 1 5 of this application directly adopts an elastic contact pin with a built-in spring, so that the needle head can be elastically retracted, so that the contact with the charging contact 2 is better. The charging contact 1 5 is a purchased product, so its specific structure is not described in detail. The mounting slot 8 of the present application is provided with a charging circuit board 11, and the end of the elastic contact pin is welded to the charging circuit board 11. Because the voltage and current of the power supply of the projection screen 2 are different from the voltage and current required by the rechargeable battery, it is necessary to set up a charging circuit board 11 to regulate the voltage and power supply. However, the above-mentioned charging circuit board 11 is commonly found in charging devices. The present application does not improve its circuit itself, but only designs the mounting structure of the circuit board. The charging circuit board 11 is fixed in the mounting slot 8 by screws. Of course, the mounting slot 8 is also provided with a power plug terminal connected to the charging circuit board 11. The power plug terminal can be connected to an external power source through a charger. Of course, the charging contact 5 being an elastic contact pin is only a specific embodiment of the present application. The charging contact 5 of the present application can also be a conductor of other shapes such as a copper sheet. Of course, the contact hole 10 also corresponds to the structure of the charging contact 5 to ensure that the charging contact 5 can extend out of the mounting slot 8 and contact other conductive parts.

[0035] As shown in the figure, as a preferred structure, guide plates 12 are provided on both sides of the bottom surface of the contact holder 8, and guide slopes are provided on the guide plates 12. In this way, when the curtain 2 is rolled up, the speaker 4 can gradually correct its position along the guide slopes to prevent the speaker 4 from causing the charging contact 1 5 and the charging contact 2 to be misaligned due to the shaking of the curtain 2.

[0036] As shown in the figure, the contact seat 8 is fixed to the curtain body 1 through the seat connecting belt, and the seat connecting belt is adjustable, so it can adapt to curtain bodies 1 of various shapes. The seat connecting belt includes belt 13 and belt 2 14, and the ends of belt 13 and belt 2 14 are provided with belt heads 15. The groove walls of the mounting groove 8 are relatively provided with belt grooves 16, and the belt 13 and belt 2 14 pass through the corresponding belt grooves 16 and the belt heads 15 are located in the mounting groove 8 and are locked with the mounting groove 8. The above structure is easy to install, and the seat connecting belt and the contact seat 8 are directly fixed without screws, so the assembly saves time. As a further preference, the belt 1 13 is provided with a card column 17, and the belt 2 14 is provided with a card hole that cooperates with the corresponding card column 17, which is convenient for adjustment to adapt to curtain bodies 1 of different thicknesses.

[0037] As shown in the figure, the rod connecting member includes a rod connecting belt 6 and a tightening structure. The rod connecting belt 6 fixes the speaker 4 to the bottom rod 3 through the tightening structure. The charging contact 2 is provided on the rod connecting belt 6. One end of the rod connecting belt 6 is fixed to the shell of the speaker. Since the bottom rod 3 is generally a round rod, the flexible rod connecting belt 6 can be used to adapt to many shapes and sizes. As a further structure, the tightening method of the rod connecting belt 6 is: the tightening structure includes a plurality of adjustment holes 7 provided on the other end of the rod connecting belt 6, and the shell of the speaker 4 is provided with a locking screw hole 5. The locking screw passes through the corresponding adjustment hole 7 and cooperates with the locking screw hole 5. The above structure is simple, and the tightness of the locking can be adjusted within a certain range, and the connection is also firm and detachable.

[0038] As a further preferred structure, a positioning column 6 is provided on the shell, and the positioning column 6 can be stuck into the corresponding adjustment hole 7, which is more convenient for the operator to operate. The positioning column 6 first clamps the position of the rod connecting belt 6, and then the user can free his hands to tighten the screws.

[0039] As a further preferred structure, the shell includes a main body 18 and end portions 19 located on both sides of the main body 18 , and the locking screw holes 5 and the positioning columns 6 are both located on the end portions 19 , which facilitates the fixation and installation of the speaker 4 .

[0040] As shown in the figure, the rod connector also includes a connecting plate 20. The rod connecting belt 6 is fixed to the connecting plate 20 and fixed to the shell through the connecting plate 20. The connecting plate 20 can be made of metal or relatively hard plastic. The connecting plate 20 has a large contact surface with the shell surface, so the connection is stable, the pressure from the screws can be dispersed to the entire surface, and the rod connecting belt 6 can be kept from being easily twisted. As a preferred specific structure, the bottom surface of the connecting plate 20 is provided with a positioning groove 21, and the end 19 of the rod connecting belt 6 is located in the positioning groove 21. Furthermore, a connecting column is provided in the positioning groove 21, and a connecting hole 22 is provided on the connecting plate 20 and passes through the connecting column. The above structure strengthens the fixation between the rod connecting belt 6 and the connecting plate 20, and makes it easier for the operator to install the rod connecting belt 6 on the speaker 4. In addition, the connecting column increases the length of the connecting hole 22, so that the connecting hole 22 can be a countersunk hole.

[0041] As shown in the figure, the charging contact 2 includes an upper contact piece 23 and a lower contact piece 24. The upper contact piece 23 is a square strip-shaped thin piece embedded in the rod connecting belt 6, and an elastic piece 25 is provided at the end of the upper contact piece 23. The upper contact piece 23 includes an area in contact with the charging contact 5, and the elastic piece 25 is in contact with the lower contact piece 24. The upper contact piece 23 of the present application can be combined with the rod connecting belt 6 by injection molding. The rod connecting belt 6 is made of plastic. The manufacturing difficulty and cost are low. The area in contact with the charging contact 5 and the elastic piece 25 are exposed, and the lower contact piece 24 is a copper sheet including relatively arranged The side panel 26 is also formed into a "concave" shape by bending a copper sheet. A socket 27 is provided on the shell of the speaker 4. The side panel 26 is inserted into the end cover through the socket 27 and is connected to the rechargeable battery through a wire. The present application adopts a structure in which the upper contact piece 23 and the lower contact piece 24 are separated, rather than a structure in which the upper contact piece 23 and the lower contact piece 24 are integrated. Because the upper contact piece 23 is combined with the rod connecting belt 6 by injection molding, the integrated structure is more troublesome to assemble, and the separated structure makes the rod connecting piece universal, which can be more flexible to match with speakers 4 of any length, and is also convenient for packaging and transportation.

[0042] The above is a detailed introduction to a rechargeable speaker for a projection screen provided by an embodiment of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A rechargeable speaker for a projection screen, comprising: It also includes a rod connector fixed to the bottom rod at the bottom end of the curtain, and the rod connector is fixed to the speaker. A rechargeable battery for powering the speaker is provided in the speaker. A contactable electrical connection structure is provided between the rod connector and the curtain body. The rechargeable battery can be charged by being connected to an external power source through the contactable electrical connection structure. The charging and power-off of the rechargeable battery can be achieved by retracting or extending the curtain. The contactable electrical connection structure includes a charging contact 1 and a charging contact 2 that can contact the charging contact 1. The charging contact 1 is arranged on the curtain body and connected to the power source. The charging contact 2 is arranged on the rod connector and connected to the rechargeable battery. The curtain body includes a square strip-shaped shell.

2. The rechargeable speaker for projection screen according to claim 1, characterized in that: The charging contact 1 is installed on the curtain body through the contact seat. A mounting groove is provided in the contact seat, and a contact hole is provided at the bottom of the mounting groove. The charging contact 1 is installed in the mounting groove, and one end is exposed to the bottom surface of the contact seat through the contact hole.

3. The rechargeable speaker for projection screen according to claim 2, characterized in that: A charging circuit board is provided in the mounting groove, and one end of the charging contact is connected to the charging circuit board.

4. The rechargeable speaker for projection screen according to claim 2, characterized in that: The contact piece seat is fixed to the curtain body through a seat connecting belt. The seat connecting belt includes belt one and belt two. The ends of belt one and belt two are provided with belt heads. Belt grooves are provided on the groove walls of the installation groove. Belt one and belt two pass through the corresponding belt grooves and the belt heads are located in the installation groove and are locked with the installation groove.

5. The rechargeable speaker for projection screen according to claim 4, characterized in that: The first belt is provided with a clamping column, and the second belt is provided with a clamping hole matched with the corresponding clamping column.

6. The rechargeable speaker for projection screen according to claim 1, characterized in that: The rod connecting member includes a rod connecting belt and a tightening structure. The rod connecting belt fixes the speaker to the bottom rod through the tightening structure, and the second charging contact is arranged on the rod connecting belt.

7. The rechargeable speaker for projection screen according to claim 6, characterized in that: The tightening structure includes a plurality of adjustment holes arranged on the connecting belt, and the acoustic shell is provided with locking screw holes, and the locking screws pass through the corresponding adjustment holes and cooperate with the locking screw holes.

8. The rechargeable speaker for projection screen according to claim 7, characterized in that: The second charging contact includes an upper contact piece and a lower contact piece. The upper contact piece is embedded in the rod connecting belt, and an elastic piece is provided at the end of the upper contact piece. The upper contact piece includes an area that contacts the first charging contact piece, and the elastic piece contacts the lower contact piece.

9. The rechargeable speaker for projection screen according to claim 8, characterized in that: The second charging contact comprises side panels arranged opposite to each other, a socket is provided on the housing of the audio system, and the side panels are inserted into the end cover through the socket and connected to the rechargeable battery.

Images