Projection mechanism and vehicle

Abstract

The invention provides a projection mechanism and a vehicle, the projection mechanism comprises a box body, a projection curtain, a rewinding assembly and an unfolding assembly, the unfolding assembly comprises a mounting seat, a driving source, a transmission part, an unfolding frame, a traction arm and a box cover, the transmission part is arranged in the box body through the mounting seat, and the driving source is arranged in the box body. The driving source is arranged in the box body and is connected with the transmission part; one end of the unfolding frame is hinged to the box body, and the other end of the unfolding frame is connected with the box cover. The transmission mode that the lead screw rotating shaft and the nut are matched is adopted, the lead screw rotating shaft and the nut have self-locking performance and are both mechanical mechanisms, the fault rate is low, compared with the mode that an electromagnetic valve is adopted for locking in the prior art, the fault rate is reduced, the abnormal sound generated when the electromagnetic valve is locked and opened cannot occur, and the service life of the electromagnetic valve is prolonged. And the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of projection equipment, and in particular to a projection mechanism and a vehicle. Background Art

[0002] As the popularity of cars increases, cars are no longer limited to a means of transportation, but a mobile terminal product that integrates multiple life functions. The functions of the in-vehicle system are gradually becoming richer, and so are the in-vehicle audio and video systems. However, at present, the in-car video can only be watched on the small screen provided by the in-car operation panel, and the viewing experience is poor. At the same time, some car owners have certain demands for a better in-car environment and atmosphere. Therefore, in-car projection products that can meet the above demands have appeared.

[0003] The projection mechanism is composed of a projection screen and an unfolding assembly. The anti-vibration effect of the in-vehicle projection screens currently on the market is poor. When the vehicle is driving, the folded projection screen is easily unfolded by itself due to the vibration of the vehicle, which brings inconvenience to the user. To solve the above problem, the prior art uses a lock composed of an electromagnetic valve to fix the unfolding assembly. When the projection screen is fully unfolded or fully closed, the unfolding assembly is locked by the lock, thereby preventing the projection screen from unfolding by itself due to the vibration of the vehicle. However, the method of locking the unfolding assembly using a lock composed of such an electromagnetic valve has the following disadvantages:

[0004] 1. The earthquake resistance of the projection screen mainly relies on the lock composed of the solenoid valve to lock the unfolding components. It is mainly controlled by the electrical structure and is prone to failure. If the solenoid valves on both sides are not powered on synchronously, the projection screen will tilt.

[0005] 2. The lock formed by the solenoid valve can only be locked when the projection screen is fully unfolded or fully closed. It cannot be locked during the unfolding process of the projection screen, that is, the projection screen can only be used in full open or full closed state.

[0006] 3. When the projection screen is fully unfolded, the solenoid valve will lock the unfolding assembly. However, the projection screen is usually in a relaxed state at the position of the projection screen that is beyond the locking position when the projection screen is unfolded. Therefore, the projection screen needs to be retracted a few millimeters to make it tight. When the projection screen needs to be closed, the projection screen needs to be relaxed first (the solenoid valve and the unfolding assembly are stuck in the tight state), and then the projection screen is retracted. This movement method seems cumbersome, and the movement mechanism is low-end. In addition, the unlocking and locking of the solenoid valve will make a clicking sound, which makes the listening experience unpleasant.

[0007] 4. When the vehicle is driving, the vibration of the screen will cause the projected image to vibrate, causing passengers to get motion sickness. Summary of the invention

[0008] In view of the shortcomings of the prior art described above, an object of the present invention is to provide a projection mechanism and a vehicle, which are used to solve the problems in the prior art that the projection mechanism can only be used fully open or fully closed, the solenoid valve used to lock the deployment component in the projection mechanism is prone to failure, and the solenoid valve makes abnormal noises when opening and closing during operation.

[0009] To achieve the above-mentioned purpose and other related purposes, the present invention provides a projection mechanism, which is applied to a vehicle; the projection mechanism includes a box body, a projection screen, a rewinding assembly, and an unfolding assembly, the unfolding assembly includes a mounting seat, a driving source, a transmission member, an unfolding frame, a traction arm, and a box cover, the transmission member is arranged in the box body through the mounting seat, the driving source is arranged in the box body and connected to the transmission member; one end of the unfolding frame is hingedly connected to the box body, and the other end of the unfolding frame is connected to the box cover; one end of the traction arm is movably connected to the transmission member, and the other end of the traction arm is connected to the unfolding frame; the driving source drives the traction arm to move through the transmission member, and the traction arm drives the unfolding frame to unfold and close; the rewinding assembly is arranged in the box body, one end of the projection screen is connected to the rewinding assembly, and the other end of the projection screen is connected to the box cover; when the unfolding frame is unfolded, the box cover is away from the box body, and the projection screen is unfolded from the rewinding assembly; when the unfolding frame is closed, the box cover is retracted to the end of the box body, and the projection screen is rolled up to the rewinding assembly.

[0010] Preferably, the driving source is a dual-axis motor, the transmission member is a screw shaft and a nut, the dual-axis motor is arranged in a box body, and the two output ends of the dual-axis motor are respectively connected to the screw shaft; the mounting seat is arranged in the box body and is located at the end of the screw shaft away from the dual-axis motor, and the screw shaft is rotatably arranged in the mounting seat; the nut is arranged on the screw shaft, and one end of the traction arm is connected to the nut.

[0011] Preferably, a first sensor is provided on the mounting seat, the first sensor is communicatively connected with the driving source, and the first sensor cooperates with the nut to stop the driving source when the unfolding frame is fully unfolded; a second sensor is provided on the box body, the second sensor is communicatively connected with the driving source, and the second sensor cooperates with the box cover to stop the driving source when the unfolding frame is fully closed; and a control system is also included, which is communicatively connected with the first sensor, the second sensor and the driving source.

[0012] Preferably, a rotary encoder is also provided, and the rotary encoder is connected to the driving source, and the driving source is controlled by the rotary encoder.

[0013] Preferably, a bearing group is provided in the mounting seat, and the screw shaft is rotatably arranged in the mounting seat through the bearing group; the bearing group is used to lubricate the rotation of the screw shaft and bear the axial force of the screw shaft during operation.

[0014] Preferably, the unfolding frame includes an unfolding arm, and the unfolding arm includes an upper arm and a lower arm, the top end of the upper arm is hinged to the mounting seat, and the bottom end of the upper arm is hinged to the top end of the lower arm; the bottom end of the lower arm is hinged to the box cover; the top side surface of the upper arm is hinged to the end of the traction arm away from the nut; the number of the unfolding arms, the screw shaft, and the nut are all two, and they are symmetrically arranged on both sides of the dual-axis motor.

[0015] Preferably, an upper arm bottom end connecting hole is opened at the bottom end of the upper arm, a lower arm top end connecting hole is opened at the top end of the lower arm, the upper arm bottom end connecting hole and the lower arm top end connecting hole are aligned, and a first hinged member is passed through the two.

[0016] Preferably, a stop groove is provided on the side of the upper arm close to the lower arm, and a stop boss is provided on the side of the lower arm close to the upper arm; or a stop boss is provided on the side of the upper arm close to the lower arm, and a stop groove is provided on the side of the lower arm close to the upper arm; the stop groove and the stop boss can abut against each other to limit the unfolding angle of the unfolding arm.

[0017] Preferably, a lower arm bottom end connecting hole is provided at the bottom end of the lower arm, a box cover connecting seat is provided on the box cover, a connecting seat hinge hole is provided in the box cover connecting seat, the lower arm bottom end connecting hole is aligned with the connecting seat hinge hole and a second hinge is passed through the two; a shockproof component is also provided between the lower arm and the box cover.

[0018] To achieve the above purpose or other purposes, the present invention also discloses a vehicle, including the above-mentioned projection mechanism, the vehicle including a body and an interior, the interior covering the inner surface of the body; the box body including an upper box body and a lower box body, the upper box body is fixed on the top surface of the body, and the interior wraps the outer circumferential surface of the upper box body; the lower box body is arranged on the bottom end surface of the upper box body, and the bottom end surface of the lower box body and the bottom end surface of the interior are on the same horizontal plane; a through groove is opened on the lower box body, and when the expansion frame is closed, the box cover covers the through groove of the lower box body; and also includes a projector, and the pattern of the projector is projected on the projection screen.

[0019] As described above, the projection mechanism and vehicle of the present invention have the following beneficial effects:

[0020] 1. The projection mechanism and vehicle involved in the present invention adopt a transmission method in which a screw shaft and a nut cooperate. The screw shaft and the nut are self-locking and are both mechanical mechanisms with a low failure rate. Compared with the method of locking with an electromagnetic valve in the prior art, not only the failure rate is reduced, but also the abnormal noise generated when the electromagnetic valve is locked and opened will not occur, thereby improving the user experience.

[0021] 2. The projection mechanism and vehicle involved in the present invention are provided with a rotary encoder on the driving source, and the driving source can stop at any position of the projection screen, thereby providing users with more usable sizes of projection screens and improving the user experience.

[0022] 3. The projection mechanism and vehicle involved in the present invention are provided with a shockproof component between the lower arm and the box cover, which can effectively offset the vibration caused by the vehicle during the driving of the vehicle, thereby avoiding the vibration of the projection screen caused by the poor stability of the projection screen in the prior art, and then avoiding the phenomenon of motion sickness in the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the projection mechanism of the present invention when it is closed;

[0024] Figure 2 It is a schematic diagram of the projection mechanism of the present invention when it is unfolded;

[0025] Figure 3 It is an exploded view of the projection mechanism involved in the present invention when it is unfolded;

[0026] Figure 4 It is a schematic diagram of a first angle of an unfolded frame in the projection mechanism according to the present invention;

[0027] Figure 5 A second angle schematic diagram of an unfolded frame in the projection mechanism according to the present invention;

[0028] Figure 6 for Figure 5 The enlarged view of point A in the middle;

[0029] Figure 7 for Figure 5 The enlarged view of point B in the middle;

[0030] Figure 8 It is a schematic diagram of the interior of the unfolded frame of the projection mechanism according to the present invention when it is folded; (the unfolded frame shows half of it);

[0031] Fig. 9 It is a schematic diagram of the interior of the unfolded frame when the projection mechanism according to the present invention is unfolded; (half of the unfolded frame is shown);

[0032] Fig.10 It is a working schematic diagram of the projection mechanism involved in the present invention;

[0033] Fig.11 A side sectional view of the projection mechanism of the present invention when it is unfolded;

[0034] Fig.12 It is a side cross-sectional view at a first angle when the projection mechanism of the present invention is closed;

[0035] Fig.13 A side cross-sectional view at a second angle when the projection mechanism of the present invention is closed;

[0036] Fig.14 A bottom view of the projection mechanism of the present invention when it is closed;

[0037] Fig.15 It is a cross-sectional view of the projection mechanism according to the present invention along the axis of the screw shaft;

[0038] Fig.16 , Fig.17 The second embodiment of the anti-vibration assembly of the projection mechanism according to the present invention;

[0039] Fig.18 , Fig.19 This is the third embodiment of the anti-vibration assembly of the projection mechanism according to the present invention.

[0040] Description of reference numerals:

[0041] 1. Box body; 101. Upper box body; 102. Lower box body;

[0042] 2. rewinding assembly; 201. rewinding shaft; 202. rewinding spring; 203. outer tube;

[0043] 3. Projection screen;

[0044] 4. Expanding frame; 401. Mounting seat; 4011. Bearing group; 402. Screw shaft; 403. Coupling; 404. Driving source; 405. Motor shaft; 406. Nut; 407. Traction arm; 408. Upper arm; 4081. Upper arm bottom connection hole; 4082. Stop groove; 409. Lower arm; 4091. Lower arm top connection hole; 4092. Stop boss; 4093. Lower arm bottom connection hole; 4094. First spring fixing hole; 4095. Pull pin; 4 10. First sensor; 411. Second sensor; 412. First hinge; 4121. Optical axis section; 4122. Threaded section; 413. Gasket; 414. Coil spring; 415. Box cover; 4151. Box cover connection seat; 4152. Connection seat hinge hole; 4153. Slide; 4154. Connecting rod; 4155. Pin hole; 4156. Connecting rod teeth; 4157. Gear; 4158. Flexible rack; 4159. Steel wire rope; 416. Second hinge;

[0045] 5. Projector. DETAILED DESCRIPTION

[0046] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0047] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0048] The present invention provides a projection mechanism. For the convenience of description, the length direction of the box body 1 is defined as the left-right direction, the width direction of the box body 1 is the front-back direction, and the height direction of the box body 1 is the up-down direction. Figure 5 As shown, the left direction and the right direction of the paper are respectively the left direction and the right direction, the upper direction and the lower direction of the paper are respectively the upper direction and the lower direction, and the front and the back of the paper are respectively the front direction and the back direction.

[0049] like Figure 1-Figure 19 As shown, the present invention provides a projection mechanism, which is applied to a vehicle; the projection mechanism includes a box body 1, a projection screen 3, a rewinding assembly 2, and an unfolding assembly, the unfolding assembly includes a mounting seat 401, a driving source 404, a transmission member, an unfolding frame 4, a traction arm 407, and a box cover 415, the transmission member is arranged in the box body 1 through the mounting seat 401, the driving source 404 is arranged in the box body 1 and connected to the transmission member; the top end of the unfolding frame 4 is hingedly connected to the box body 1, and the bottom end of the unfolding frame 4 is connected to the box cover 415; the top end of the traction arm 407 is movably connected to the box body 1. On the transmission member, the bottom end of the traction arm 407 is connected to the unfolding frame 4; the driving source 404 drives the traction arm 407 to move through the transmission member, and the traction arm 407 drives the unfolding frame 4 to unfold and close; the rewinding assembly 2 is arranged in the box body 1, the top end of the projection screen 3 is connected to the rewinding assembly 2, and the bottom end of the projection screen 3 is connected to the box cover 415; when the unfolding frame 4 is unfolded, the box cover 415 is away from the box body 1, and the projection screen 3 is unfolded from the rewinding assembly 2; when the unfolding frame 4 is closed, the box cover 415 is retracted to the end of the box body 1, and the projection screen 3 is rolled up onto the rewinding assembly 2.

[0050] In the projection mechanism involved in the present invention, a driving source 404 drives a traction arm 407 to move through a transmission member, and the traction arm 407 drives the unfolding frame 4 to unfold and close. The position of the traction arm 407 on the transmission member is adjustable, so that when the unfolding frame 4 is fully unfolded or fully closed, the traction arm 407 remains stationary on the transmission member, and the bottom end of the traction arm 407 is connected to the unfolding frame 4, that is, the unfolding frame 4 relies on the traction arm 407 to provide a force, which solves the problem of abnormal noise caused by relying on the electromagnetic valve to limit when the projection screen 3 is fully opened or fully closed in the prior art.

[0051] Preferably, Figure 3-Figure 5 As shown, the driving source 404 is a double-axis motor, the transmission member is a screw shaft 402 and a nut 406, the double-axis motor is arranged in the box body 1, and the two output ends of the double-axis motor are respectively connected to the screw shaft 402; the mounting seat 401 is arranged on the top surface of the box body 1, and is located at the end of the screw shaft 402 away from the double-axis motor, and the screw shaft 402 is rotatably arranged in the mounting seat 401; the nut 406 is arranged on the screw shaft 402, and the top of the traction arm 407 is connected to the nut 406. The two output ends of the double-axis motor can be realized by two motor shafts 405, and the two motor shafts 405 are concentric.

[0052] In this embodiment, the top of the driving source 404 is fixedly connected to the top of the box body 1. The two output ends of the dual-axis motor are connected to the screw shaft 402 through a coupling 403, and the coupling 403 is used to absorb the processing error and installation error between the output end of the driving source 404 and the screw shaft 402. The nut 406 is selected from a screw nut (internal thread and external thread matching) or a ball nut (ball groove and ball matching). The top of the traction arm 407 is connected to the nut 406. When the screw shaft 402 rotates, the nut 406 will move left and right along the screw shaft 402, and the traction arm 407 also moves left and right with the nut 406, thereby realizing the application of the unfolding force and the closing force to the unfolding frame 4.

[0053] Preferably, Figure 3 , Figure 4 , Fig.15 As shown, a first sensor 410 is provided on the mounting seat 401, and the first sensor 410 is communicatively connected with the driving source 404, and the first sensor 410 cooperates with the nut 406, and the driving source 404 stops working when the unfolding frame 4 is fully unfolded; a second sensor 411 is provided on the box body 1, and the second sensor 411 is communicatively connected with the driving source 404, and the second sensor 411 cooperates with the box cover 415, and the driving source 404 stops working when the unfolding frame 4 is fully closed; and a control system is also included, and the control system is communicatively connected with the first sensor 410, the second sensor 411, and the driving source 404.

[0054] In this embodiment, the number of the first sensor 410 is one, which is arranged on any mounting seat 401. When the driving source 404 drives the screw shaft 402 to rotate, the two nuts 406 move in the left and right directions along the screw shaft 402, and the nuts 406 drive the two traction arms 407 to move in the left and right directions, respectively. The unfolding frame 4 gradually unfolds, the box cover 415 gradually moves down, and the projection screen 3 is gradually opened; when the nuts 406 move to the farthest ends on both sides, the unfolding frame 4 is fully unfolded, the box cover 415 moves to the lowest end, and the projection screen 3 is fully opened. At this time, the nuts 406 contact the first sensor 410, and the first sensor 410 will feedback information to the control system, and the control system controls the driving source 404 to stop driving.

[0055] The top of the second sensor 411 is fixedly connected to the top surface of the box body 1. When the driving source 404 drives the screw shaft 402 to rotate in the opposite direction, the two nuts 406 move toward the middle direction along the screw shaft 402, and the nuts 406 drive the two traction arms 407 to move toward the middle direction, the unfolding frame 4 is gradually retracted, the box cover 415 gradually rises, and the projection screen 3 gradually retracts; when the box cover 415 rises to contact the second sensor 411, the second sensor 411 will feedback information to the control system, and the control system controls the driving source 404 to stop driving, and the projection screen 3 is completely retracted. The first sensor 410 and the second sensor 411 can use micro switches.

[0056] Furthermore, in this embodiment, a rotary encoder is also provided, and the rotary encoder is connected to the driving source 404, and the driving source 404 is controlled by the rotary encoder. The rotary encoder is used to detect the rotation angle of the driving source 404. The consumer can set the rotation angle of the driving source 404 through the control system. The rotary encoder detects the rotation angle of the driving source 404 in real time. When the driving source 404 reaches the set rotation angle, the rotary encoder feeds back information to the control system, and then the control system controls the driving source 404 to stop driving, and the projection screen 3 will be in a half-open state, thereby providing consumers with more usage sizes.

[0057] Preferably, Fig.15As shown, a bearing group 4011 is arranged in the mounting seat 401, and the screw shaft 402 is rotatably arranged in the mounting seat 401 through the bearing group 4011; the bearing group 4011 is used to lubricate the rotation of the screw shaft 402 and bear the axial force of the screw shaft 402 during operation. In this embodiment, since the nut 406 can move in two directions on the screw shaft 402, that is, the screw shaft 402 will apply an axial force to the left or right on the bearing group 4011 during the rotation process; therefore, the bearing group 4011 needs to bear the gravity load of the transmission member and the unfolding frame 4, and also needs to bear the axial force. Therefore, when ordinary bearings are used, they are easily damaged by the axial force during long-term use. In order to extend the service life of the bearing group 4011, ordinary bearings and end bearings can be used to form the bearing group 4011 (that is, two bearings), or a bearing that can simultaneously bear the rotation force and the axial force (such as a thrust bearing) can be used.

[0058] In order to further reduce the gravity load of the bearing group 4011 on the transmission member and the unfolding frame 4, a plurality of mounting seats 401 can be provided on the outer peripheral surface of the screw shaft 402, and the bearing group 4011 is provided in each mounting seat 401. The gravity load and the axial force are shared by providing a plurality of mounting seats 401 and bearing groups 4011, thereby extending the service life of the device. In this embodiment, there are a total of four mounting seats 401, which are symmetrically arranged on the left and right sides of the driving source 404.

[0059] Preferably, Figure 3-Figure 5 , Figure 7 As shown, the unfolding frame 4 includes an unfolding arm, and the unfolding arm includes an upper arm 408 and a lower arm 409. The top end of the upper arm 408 is hinged to the mounting base 401, and the bottom end of the upper arm 408 is hinged to the top end of the lower arm 409; the bottom end of the lower arm 409 is hinged to the box cover 415; the top side surface of the upper arm 408 is hinged to the bottom end of the traction arm 407; the number of the unfolding arm, the screw shaft 402, and the nut 406 are all two, and they are symmetrically arranged on both sides of the dual-axis motor.

[0060] Preferably, Figure 6 As shown, the bottom end of the upper arm 408 is provided with an upper arm bottom end connection hole 4081, and the top end of the lower arm 409 is provided with a lower arm top end connection hole 4091. The upper arm bottom end connection hole 4081 and the lower arm top end connection hole 4091 are aligned, and a first hinge 412 is passed through the two. In this embodiment, the upper arm bottom end connection hole 4081 is a threaded hole, and the lower arm top end connection hole 4091 is a through hole; in other embodiments, the upper arm bottom end connection hole 4081 is a through hole, and the lower arm top end connection hole 4091 is a threaded hole. As long as the upper arm bottom end connection hole 4081 and the lower arm top end connection hole 4091 can be hinged through the first hinge 412, it will be sufficient.

[0061] In this embodiment, if Figure 6As shown, the upper arm 408 and the lower arm 409 form a V-shaped connecting rod. When the unfolding frame 4 is gradually unfolded from the folded state, the angle between the upper arm 408 and the lower arm 409 gradually increases until the angle between the upper arm 408 and the lower arm 409 is at the maximum state when the unfolding frame 4 is fully unfolded. The first hinge 412 includes a threaded section 4122 and an optical axis section 4121. The threaded section 4122 is connected to the connecting hole 4081 at the bottom end of the upper arm, and the optical axis section 4121 is connected to the connecting hole 4091 at the top end of the lower arm. The lower arm 409 can swing around the optical axis section 4121, so as to realize the hinge between the upper arm 408 and the lower arm 409. In addition, a gasket 413 is also provided between the opposite surfaces of the upper arm 408 and the lower arm 409 to limit the movement of the lower arm 409 in the axial direction, so as to prevent the lower arm 409 from moving in the axial direction of the optical axis section 4121, thereby preventing the lower arm 409 from shaking forward and backward when the vehicle is running. The situation in which the threaded section 4122 is connected to the connecting hole 4091 at the top end of the lower arm and the optical axis section 4121 is connected to the connecting hole 4081 at the bottom end of the upper arm is similar to the above and will not be repeated here.

[0062] Preferably, Figure 6 As shown, a stop groove 4082 is provided on the front side of the upper arm 408, and a stop boss 4092 is provided on the rear side of the lower arm 409; or a stop boss 4092 is provided on the front side of the upper arm 408, and a stop groove 4082 is provided on the rear side of the lower arm 409; the stop groove 4082 and the stop boss 4092 can be abutted to limit the unfolding angle of the unfolding arm. In this embodiment, when the unfolding frame 4 is fully opened, the stop boss 4092 will abut against the edge of the stop groove 4082 to prevent the unfolding arm from being over-opened and damaging the parts. In addition, when the stop boss 4092 and the stop groove 4082 abut, they can also effectively resist the vibration generated by the vehicle during operation and prevent the projection screen 3 from shaking due to the bumpy driving of the vehicle.

[0063] In this embodiment, the stop boss 4092 and the stop groove 4082 control the limit of the V-shaped connecting rod at 180°, that is, when the expansion frame 4 is fully expanded, the upper arm 408 and the lower arm 409 will be on the same vertical line, and the expansion frame 4, the box cover 415, and the box body 1 will form a "mouth" shape.

[0064] Preferably, Figure 7As shown, a lower arm bottom end connection hole 4093 is provided at the bottom end of the lower arm 409, a box cover 415 is provided with a box cover connection seat 4151, a connection seat hinge hole 4152 is provided in the box cover connection seat 4151, the lower arm bottom end connection hole 4093 is aligned with the connection seat hinge hole 4152, and a second hinge 416 is passed through the two; a shockproof component is also provided between the lower arm 409 and the box cover 415. In this embodiment, the lower arm bottom end connection hole 4093 is a threaded hole, and the connection seat hinge hole 4152 is a through hole; in other embodiments, the lower arm bottom end connection hole 4093 is a through hole, and the connection seat hinge hole 4152 is a threaded hole, as long as the lower arm bottom end connection hole 4093 and the connection seat hinge hole 4152 can be hinged through the second hinge 416.

[0065] In this embodiment, the second hinge 416 includes a threaded section and an optical axis section. The threaded section is connected to the connection hole 4093 at the bottom end of the lower arm, and the optical axis section is connected to the connection seat hinge hole 4152. The lower arm 409 and the box cover 415 can be hinged and swung. In addition, a gasket 413 is also provided between the opposite surfaces of the lower arm 409 and the box cover connection seat 4151 to limit the axial movement of the box cover 415, so as to prevent the box cover 415 from moving in the axial direction of the optical axis section, thereby preventing the box cover 415 from shaking back and forth when the vehicle is moving. The situation in which the threaded section is connected to the connection seat hinge hole 4152 and the optical axis section is connected to the connection hole 4093 at the bottom end of the lower arm is the same as described above, and will not be repeated here. The first hinge 412 and the second hinge 416 can be bolted.

[0066] Furthermore, in order to prevent the projection screen 3 from swinging in the left-right direction and the up-down direction due to the bumping of the vehicle or the touch of people when the unfolding frame 4 is in the unfolded state (including half-open and fully open), a shockproof component is also provided between the lower arm 409 and the box cover 415. The specific structures of several shockproof components disclosed in this application are as follows, but there are other structures that are within the protection scope of this application as long as they can achieve the shockproof function.

[0067] First embodiment: the shockproof component adopts a coil spring 414 .

[0068] Take the connection between the lower arm 409 and the box cover 415 on the left side as an example. Figure 7 As shown, a first spring fixing hole 4094 is opened on the side of the lower arm 409 close to the box cover 415, and a second spring fixing hole is opened on the side of the box cover connecting seat 4151 close to the lower arm 409. The coil spring 414 is sleeved on the outer peripheral side of the second hinge 416, and the two ends of the coil spring 414 are respectively fixed in the first spring fixing hole 4094 and the second spring fixing hole.

[0069] Since the unfolding frame 4 in the present application is in the shape of a "mouth" after being fully unfolded, that is, the maximum angle between the lower arm 409 and the box cover 415 is 90°, during the installation process, the lower arm 409 and the box cover 415 first align the lower arm bottom end connection hole 4093 and the connection seat hinge hole 4152 at an obtuse angle, then install the coil spring 414 and the second hinge 416, and then rotate the lower arm 409 so that the angle between the lower arm 409 and the box cover 415 is less than 90°, and then the lower arm 409 and the upper arm 408 are hingedly installed, and the coil spring 414 will generate a torsion force rotating at an obtuse angle. Since the angle of the projection screen 3 when unfolding or closing is less than 90°, there is always an outward unfolding torsion force between the lower arm 409 and the box cover 415, and the torsion force can be decomposed into an outward thrust applied to the lower arm 409 and a downward thrust applied to the box cover 415. Correspondingly, the connection between the lower arm 409 on the right side and the box cover 415 is the same as the above connection, and will not be repeated here.

[0070] In this way, when the vehicle bumps left and right or a person applies a force in the left and right direction, the force in the left and right direction applied to the unfolding frame 4 is offset or weakened by the outward thrust of the coil spring 414. When the vehicle bumps up and down or a person applies an upward force, the force in the up and down direction applied to the unfolding frame 4 is offset or weakened by the downward thrust of the coil spring 414, thereby ensuring the stability of the unfolding frame 4 and the projection screen 3 and achieving an anti-seismic effect.

[0071] Second embodiment: the anti-vibration assembly adopts a connecting rod 4154 and a gear 4157 .

[0072] Take the connection between the lower arm 409 and the box cover 415 on the left side as an example. Fig.16 , Fig.17 As shown, the lower arm 409 and the box cover 415 are normally connected through the box cover connecting seat 4151 and the second hinge 416; a pin 4095 is provided on the outer circle of the lower end surface of the lower arm 409, and a left slide groove 4153 is provided on the box cover 415, and a left connecting rod 4154 is provided in the left slide groove 4153. A pin hole 4155 is provided at the left end of the left connecting rod 4154, and a plurality of connecting rod teeth 4156 are provided on the rear side surface of the right end of the left connecting rod 4154. A gear 4157 is provided on the box cover 415 in the horizontal direction (the rotation trajectory of the gear 4157 is clockwise or counterclockwise on the horizontal plane), and the left connecting rod teeth 4156 are meshed with the gear 4157. Correspondingly, the connection between the lower arm 409 on the right and the box cover 415 is the same as the above connection and will not be repeated here, but it should be noted that the connecting rod teeth 4156 on the left and the connecting rod teeth 4156 on the right are engaged on the same gear 4157.

[0073] When the projection screen 3 is unfolded, the lower arm 409 on the left rotates around the second hinge 416, the pin 4095 drives the connecting rod 4154 on the left to move rightward, and then the connecting rod teeth 4156 drive the gear 4157 to mesh and rotate. The lower arm 409 on the right rotates around the second hinge 416, the pin 4095 drives the connecting rod 4154 on the right to move leftward, and then the connecting rod teeth 4156 drive the gear 4157 to mesh and rotate. When the projection screen 3 stops unfolding, the connecting rod teeth 4156 on the left and the connecting rod teeth 4156 on the right are meshed with the gear 4157 at the same time. The connecting rod 4154 on the left and the connecting rod 4154 on the right are linked to ensure the stability between the two lower arms 409 and the box cover 415. The connecting rod 4154 on the right is provided with an adapter plate for meshing with the gear 4157.

[0074] When the vehicle bumps left and right or a person applies a force in the left and right directions, the left and right directions of the force on the unfolding frame 4 are absorbed by the connecting rod teeth 4156 and the gear 4157. For example, the left lower arm 409 is subjected to a force to the right, and then the left connecting rod 4154 moves to the right, and then the left connecting rod teeth 4156 drive the gear 4157 to rotate, but the right lower arm 409 is not subjected to a force to the left, so the rotation of the gear 4157 will be offset by the meshing force between the right connecting rod teeth 4156 and the gear 4157. Conversely, the rightward force on the unfolding frame 4 will also be offset, thereby achieving the offset or weakening of the left and right directions of the force. If the left lower arm 409 is subjected to a force to the right and the right lower arm 409 is subjected to a force to the left, the gear 4157 will rotate. However, since a stop boss 4092 and a stop groove 4082 are provided between the upper arm 408 and the lower arm 409, the displacement of the top end of the lower arm 409 will be blocked and the unfolding frame 4 will not swing.

[0075] When the vehicle bumps up and down or a person applies a force in the up and down direction, since the upper arm 408 is connected to the screw shaft 402 through the nut 406 and the traction arm 407, and the nut 406 and the screw shaft 402 have a self-locking function, when the unfolding frame 4 is subjected to the up and down force, only the lower arm 409 will swing. However, since the pin 4095, the pin hole 4155, the connecting rod teeth 4156, and the gear 4157 are provided between the lower arm 409 and the connecting rod 4154, the swing of the lower arm 409 will be limited. Therefore, when the swing of the lower arm 409 is limited, the unfolding frame 4 will not move in the up and down direction, that is, the force applied to the unfolding frame 4 in the up and down direction is offset by the anti-vibration assembly, thereby achieving an anti-vibration effect.

[0076] In addition, in this embodiment, the connection between the pin 4095 and the pin hole 4155 can be replaced by mutually meshing teeth, such as lower arm teeth are provided on the outer circle of the lower end surface of the lower arm 409, and meshing teeth are provided on the end of the corresponding connecting rod 4154. In other embodiments, other methods can also be used, as long as the swing of the lower arm 409 can drive the movement of the connecting rod 4154.

[0077] The third embodiment: the shockproof assembly adopts a soft rack 4158 and a gear 4157.

[0078] like Fig.18 , Fig.19 As shown, the difference between this embodiment and the above-mentioned second embodiment is that the connecting rod 4154 in the second embodiment is replaced by a flexible rack 4158 and a steel wire rope 4159. The flexible rack 4158 is arranged on the outer circumference of the steel wire rope 4159, one end of the flexible rack 4158 is transmission-connected to the lower arm 409, and the other end is meshingly connected to the gear 4157, and the steel wire rope 4159 plays the role of straightening the flexible rack 4158.

[0079] In this embodiment, the soft rack 4158 can be directly meshed and connected with the lower arm 409 (lower arm teeth are provided on the outer circle of the lower end surface of the lower arm 409), or indirectly connected through an intermediate piece (using a pin 4095 and a pin hole 4155).

[0080] The working process of the anti-vibration assembly in this embodiment is basically similar to the working process of the second embodiment, and will not be repeated here.

[0081] Preferably, Figure 10-13 The rewinding assembly 2 includes a rewinding shaft 201, an outer tube 203, and a rewinding spring 202. The rewinding shaft 201 is fixed in the box body 1. The rewinding spring 202 is sleeved on the outer peripheral side of the rewinding shaft 201, and the outer tube 203 is sleeved on the outer peripheral surface of the rewinding spring 202. One end of the rewinding spring 202 is fixedly connected to the rewinding shaft 201, and the other end of the rewinding spring 202 is fixedly connected to the outer tube 203. One end of the projection screen 3 is connected to the outer tube 203. When the projection screen 3 is unfolded, the outer tube 203 rotates, and then the rewinding spring 202 will be deformed by the tension, thereby providing a reaction force to always keep the projection screen 3 in a taut state. When the projection screen 3 is retracted, the reaction force of the rewinding spring 202 drives the outer tube 203 to rotate in the opposite direction, so that the projection screen 3 is retracted onto the outer tube 203.

[0082] To achieve the above purpose or other purposes, the present invention also discloses a vehicle, including the above projection mechanism, the vehicle including a body and an interior, the interior covering the inner surface of the body; Figure 1-Figure 3As shown, the box body 1 includes an upper box body 101 and a lower box body 102. The upper box body 101 is fixed on the top surface of the vehicle body, and the interior decoration wraps the outer peripheral surface of the upper box body 101; the lower box body 102 is arranged on the bottom end surface of the upper box body 101, and the bottom end surface of the lower box body 102 and the bottom end surface of the interior decoration are on the same horizontal plane; a through groove is opened on the lower box body 102, and when the unfolding frame 4 is closed, the box cover 415 covers the through groove of the lower box body 102; it also includes a projector 5, and the pattern of the projector 5 is projected on the projection screen 3.

[0083] The projection mechanism and vehicle of the present invention have the following working principles:

[0084] First, the operator Figure 1-Figure 19 The components are produced and assembled according to the description of the above components.

[0085] Secondly, when the operator needs to use the projection mechanism, the control system turns on the driving source 404, the driving source 404 rotates to drive the screw shaft 402 to rotate, the two nuts 406 move to the left and right respectively on the screw shaft 402, and the two traction arms 407 follow the two nuts 406 to move to the left and right (the traction arms 407 are hinged and swing at points A and B in the figure), and the traction arms 407 apply a force to the upper arm 408, and the upper arm 408 is hinged at the top of the upper arm 408 and the hinge point of the box cover connecting seat 4151 ( Figure 8 The upper arm 408 swings downwards, that is, the upper arm 408 drives the lower arm 409 to swing downwards obliquely. Under the action of the upper arm 408 swinging downwards obliquely and the gravity of the lower arm 409 and the box cover 415, the lower arm 409 takes the optical axis section 4121 of the first hinge 412 as the hinge point ( Figure 8 The second hinge 416 assists the lower arm 409 in swinging (the lower arm 409 swings at point D in the middle). Figure 8 The box cover 415 is always in the horizontal direction and gradually descends. The projection screen 3 is stretched from the outer tube 203 by the tensile force, and the rewinding spring 202 generates a tensile force. When one of the nuts 406 moves on the screw shaft 402 to abut against the first sensor 410, the first sensor 410 will feedback information to the control system. The control system receives the information and then stops the driving source 404, and the box cover 415 stops descending. At this time, the unfolding frame 4 is fully unfolded, and the stop boss 4092 between the upper arm 408 and the lower arm 409 is just stuck in the stop groove 4082.

[0086] Then, if Fig.10 As shown, the operator turns on the projector 5 through the control system, and the pattern in the projector 5 is projected onto the projection screen 3 for passengers to watch.

[0087] Finally, when the projection mechanism needs to be closed, the control system is used to reversely open the driving source 404, and the driving source 404 drives the screw shaft 402 to rotate in the opposite direction. The two nuts 406 move toward the middle on the screw shaft 402, and the two traction arms 407 follow the two nuts 406 to move toward the middle. The traction arms 407 exert a force on the upper arm 408, and the upper arm 408 swings at the hinge point between the top of the upper arm 408 and the box cover connecting seat 4151, that is, the upper arm 408 drives the lower arm 409 to swing obliquely upward. Under the oblique upward swinging force of the upper arm 408, the lower arm 409 swings at the optical axis section 4121 of the first hinge 412 as the hinge point, and the second hinge 416 assists the swinging of the lower arm 409. The box cover 415 is always in the horizontal direction and gradually rises. The tensile force of the rewinding spring 202 drives the outer tube 203 to rotate, and the projection screen 3 is rewound onto the outer tube 203. When the box cover 415 rises to abut against the second sensor 411, the second sensor 411 will feed back information to the control system, and the control system receives the information and then stops driving the driving source 404, and the box cover 415 stops rising. At this time, the unfolding frame 4 is completely closed, and the bottom end surface of the box cover 415 just covers the through groove of the lower box body 102.

[0088] Preferably, when a passenger needs to place the projection screen 3 in the middle position, the operator sets the rotation angle of the driving source 404 through the control system, and the rotary encoder detects the rotation angle of the driving source 404 in real time. When the rotation angle of the driving source 404 reaches the set rotation angle, the rotary encoder feeds back information to the control system, and then the control system stops the operation of the driving source 404, so that the unfolding frame 4 is in a half-open state, and then the projection screen 3 is in a half-open state.

[0089] The projection mechanism and vehicle according to the present invention have the following beneficial effects:

[0090] 1. The projection mechanism and vehicle involved in the present invention adopt a transmission method in which a screw shaft 402 and a nut 406 cooperate with each other. The screw shaft 402 and the nut 406 are self-locking and are both mechanical mechanisms with a low failure rate. This solves the problem of a large number of electronic components, a high failure rate, and abnormal noise caused by the locking and opening of the solenoid valve in the prior art.

[0091] 2. The projection mechanism and vehicle of the present invention are provided with a rotary encoder on the driving source 404, which can provide users with more usable sizes of the projection screen 3 and improve the user experience.

[0092] 3. The projection mechanism and vehicle involved in the present invention are provided with a shockproof component, which can effectively offset the vibration caused by the vehicle during driving, thereby avoiding the vibration of the projection screen caused by the poor stability of the projection screen 3 in the prior art, thereby avoiding the phenomenon of motion sickness in the user.

[0093] 4. In the projection mechanism and vehicle of the present invention, the projection screen 3 adopts a rewinding shaft 201, a rewinding spring 202, and an outer tube 203. When the projection screen 3 is unfolded, the rewinding spring 202 always provides a reverse force to the projection screen 3 to ensure that the projection screen 3 is always in a taut state.

[0094] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A projection mechanism, applied to a vehicle; characterized in that: The projection mechanism comprises a box body (1), a projection screen (3), a rewinding assembly (2), and an unfolding assembly; the unfolding assembly comprises a mounting seat (401), a driving source (404), a transmission member, an unfolding frame (4), a traction arm (407), and a box cover (415); the transmission member is arranged in the box body (1) through the mounting seat (401); the driving source (404) is arranged in the box body (1) and is connected to the transmission member; one end of the unfolding frame (4) is hingedly connected to the box body (1), and the other end of the unfolding frame (4) is connected to the box cover (415); one end of the traction arm (407) is movably connected to the transmission member, and the other end of the traction arm (407) is connected to the unfolding frame (4); the driving source (404) drives the traction arm (407) to move through the transmission member, and the traction arm (407) drives the unfolding frame (4) to unfold and close; The rewinding assembly (2) is arranged in the box body (1); one end of the projection screen (3) is connected to the rewinding assembly (2), and the other end of the projection screen (3) is connected to the box cover (415); when the unfolding frame (4) is unfolded, the box cover (415) is away from the box body (1), and the projection screen (3) is unfolded from the rewinding assembly (2); when the unfolding frame (4) is closed, the box cover (415) is retracted to the end of the box body (1), and the projection screen (3) is rolled up onto the rewinding assembly (2).

2. The projection mechanism according to claim 1, characterized in that: The driving source (404) is a double-axis motor, the transmission member is a screw shaft (402) and a nut (406), the double-axis motor is arranged in the box body (1), and the two output ends of the double-axis motor are respectively connected to the screw shaft (402); the mounting seat (401) is arranged in the box body (1) and is located at the end of the screw shaft (402) away from the double-axis motor, and the screw shaft (402) is rotatably arranged in the mounting seat (401); the nut (406) is arranged on the screw shaft (402), and one end of the traction arm (407) is connected to the nut (406).

3. The projection mechanism according to claim 2, characterized in that: The mounting seat (401) is provided with a first sensor (410), the first sensor (410) is connected to the driving source (404) for communication, and the first sensor (410) cooperates with the nut (406) to stop the driving source (404) from working when the unfolding frame (4) is fully unfolded; the box body (1) is provided with a second sensor (411), the second sensor (411) is connected to the driving source (404) for communication, and the second sensor (411) cooperates with the box cover (415) to stop the driving source (404) from working when the unfolding frame (4) is fully closed; It also includes a control system, which is communicatively connected to the first sensor (410), the second sensor (411), and the driving source (404).

4. The projection mechanism according to claim 1, characterized in that: A rotary encoder is also provided, and the rotary encoder is connected to the driving source (404), and the driving source (404) is controlled by the rotary encoder.

5. The projection mechanism according to claim 2, characterized in that: A bearing group (4011) is arranged in the mounting seat (401), and the screw shaft (402) is rotatably arranged in the mounting seat (401) via the bearing group (4011); the bearing group (4011) is used to lubricate the rotation of the screw shaft (402) and to bear the axial force of the screw shaft (402) during operation.

6. The projection mechanism according to claim 2, characterized in that: The unfolding frame (4) comprises an unfolding arm, and the unfolding arm comprises an upper arm (408) and a lower arm (409), the top end of the upper arm (408) is hinged to the mounting seat (401), the bottom end of the upper arm (408) is hinged to the top end of the lower arm (409); the bottom end of the lower arm (409) is hinged to the box cover (415); the top side surface of the upper arm (408) is hinged to the end of the traction arm (407) away from the nut (406); The number of the unfolding arms, the screw shaft (402), and the nut (406) is two, and they are symmetrically arranged on both sides of the dual-axis motor.

7. The projection mechanism according to claim 6, characterized in that: The bottom end of the upper arm (408) is provided with an upper arm bottom end connecting hole (4081), and the top end of the lower arm (409) is provided with a lower arm top end connecting hole (4091). The upper arm bottom end connecting hole (4081) and the lower arm top end connecting hole (4091) are aligned, and a first hinged member (412) is passed through the two.

8. The projection mechanism according to claim 7, characterized in that: A stop groove (4082) is provided on the side of the upper arm (408) close to the lower arm (409), and a stop boss (4092) is provided on the side of the lower arm (409) close to the upper arm (408); or a stop boss (4092) is provided on the side of the upper arm (408) close to the lower arm (409), and a stop groove (4082) is provided on the side of the lower arm (409) close to the upper arm (408); the stop groove (4082) and the stop boss (4092) can abut against each other to limit the unfolding angle of the unfolding arm.

9. The projection mechanism according to claim 6, characterized in that: A lower arm bottom end connecting hole (4093) is provided at the bottom end of the lower arm (409); a box cover connecting seat (4151) is provided on the box cover (415); a connecting seat hinge hole (4152) is provided in the box cover connecting seat (4151); the lower arm bottom end connecting hole (4093) is aligned with the connecting seat hinge hole (4152) and a second hinged member (416) is passed through the two; and a shockproof component is also provided between the lower arm (409) and the box cover (415).

10. A vehicle, comprising the projection mechanism according to any one of claims 1 to 9, characterized in that: The vehicle comprises a vehicle body and an interior decoration, wherein the interior decoration covers the inner surface of the vehicle body; the box body (1) comprises an upper box body (101) and a lower box body (102), wherein the upper box body (101) is fixed on the top surface of the vehicle body, and the interior decoration wraps the outer peripheral surface of the upper box body (101); the lower box body (102) is arranged on the bottom end surface of the upper box body (101), and the bottom end surface of the lower box body (102) and the bottom end surface of the interior decoration are on the same horizontal plane; a through slot is provided on the lower box body (102), and when the unfolding frame (4) is closed, the box cover (415) covers the through slot of the lower box body (102); It also comprises a projector (5), wherein a pattern of the projector (5) is projected onto a projection screen (3).

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