In-vehicle curtain cloth folding and unfolding mechanism and in-vehicle projection curtain system

Abstract

The utility model provides an in-vehicle curtain cloth folding and unfolding mechanism and an in-vehicle projection curtain system. The in-vehicle curtain cloth folding and unfolding mechanism comprises a projection curtain, a rolling driving source, a driving gear, a first composite inhaul cable, a second composite inhaul cable, a first guide groove, a second guide groove and a curtain pull rod fixed to the lower end of the projection curtain. The first composite inhaul cable comprises a first meshing section, a first bending transmission section, a second bending transmission section and a first sliding block assembly, and the second composite inhaul cable comprises a second meshing section, a third bending transmission section, a fourth bending transmission section and a second sliding block assembly. The first meshing section and the second meshing section are movably contained in the first guide groove and the second guide groove respectively and are both meshed with the driving gear, the furling driving source drives the driving gear to rotate, and the first sliding block assembly and the second sliding block assembly are connected with the two ends of the curtain pull rod respectively. The first composite inhaul cable and the second composite inhaul cable effectively and synchronously operate, and inclination of the projection curtain is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile interaction system, especially to a kind of in-car curtain retraction mechanism and the in-car projection curtain system comprising the in-car curtain retraction mechanism. BACKGROUND

[0002] With the continuous upgrading of car market and the trend that new energy vehicles are more and more moving towards mobile audio and video center and intelligent computing terminal, at present, more and more passenger vehicles gradually launch new interactive systems with intelligence and differentiation in the vehicle. Among them, the vehicle-mounted projection system as a new type of in-vehicle viewing system has attracted widespread attention, and it has become a trend for high-end cars to be equipped with in-vehicle viewing systems.

[0003] Due to the complexity of the in-vehicle environment and the requirements of laws and regulations for passenger safety and comfort, the projection curtain system as one of the important components of the vehicle-mounted projection system needs to have a series of characteristics such as large projection area, excellent optical performance, easy recovery, high anti-interference, etc. The mainstream in-vehicle projection curtain system on the market usually adopts the curtain retraction structure of a household folding projection curtain system, which realizes the expansion and recovery of the projection curtain by adding an X-shaped support that can be folded and recovered on the back of the projection curtain. However, due to the limitations of the structure, this design often has a large working volume and it is difficult to realize the anti-pinch function in the vehicle. At the same time, since the X-shaped support needs to completely cover the projection area to ensure the stability of the entire curtain retraction structure, the structure of the X-shaped support on the market limits the upper limit size of the projection area, and it is impossible to realize the physical isolation of the front and rear spaces in the true sense, so it is impossible to achieve the design goal of maximizing the division of the in-vehicle space.

[0004] In the prior art, a Chinese utility model patent with authorization announcement number CN219769765U discloses a projection device for vehicle interior, which realizes the retraction and expansion of the projection curtain by driving the slide feet on the projection curtain to reciprocate up and down through a driving mechanism. One structure of the driving mechanism is as follows: the driving mechanism includes a driving motor and two flexible shafts, the gears of the driving motor are meshed and linked with the two flexible shafts on both sides, and the two flexible shafts are connected with the slide feet on the curtain guide rails on the left and right sides, thereby driving the slide feet to move up or down and realizing the retraction and expansion of the projection curtain. However, since the driving motor is arranged at the top, the flexible shafts have a large bending amplitude at the transition extension of the horizontal and vertical directions, which affects the stability of the system operation and cannot well guarantee the synchronization of the up and down movements of the two slide feet, thereby causing the projection curtain to tilt and produce an adverse phenomenon, and the flexible shafts and the gears of the driving motor also produce a certain noise when meshing and running, which affects the customer experience. UTILITY MODEL CONTENTS

[0005] In view of the above-mentioned prior art defects, the technical problem to be solved by the utility model is to provide a curtain retracting mechanism in a vehicle to avoid the projection curtain from being inclined.

[0006] To achieve the above-mentioned purpose, the utility model provides a curtain retracting mechanism in a vehicle, which comprises a top bracket assembly and a guide rail assembly both for being installed in the vehicle, a curtain winding assembly installed on the top bracket assembly, a projection curtain, a winding drive source installed on the top bracket assembly, a driving gear, a first composite cable, a second composite cable, a first guide groove and a second guide groove both fixed on the top bracket assembly and a curtain pull rod fixed on the lower end of the projection curtain, wherein the upper end of the projection curtain is wound and connected to the curtain winding assembly.

[0007] The first composite cable comprises a first engaging section movably accommodated in the first guide groove, a first bending transmission section and a second bending transmission section connected at both ends of the first engaging section respectively and a first slider assembly connected at the end of the first bending transmission section, the second composite cable comprises a second engaging section movably accommodated in the second guide groove, a third bending transmission section and a fourth bending transmission section connected at both ends of the second engaging section respectively and a second slider assembly connected at the end of the third bending transmission section, the end of the fourth bending transmission section is connected with the first slider assembly and the end of the second bending transmission section is connected with the second slider assembly.

[0008] The winding drive source is connected with the driving gear and drives the driving gear to rotate, the first engaging section and the second engaging section are symmetrically arranged on both sides of the driving gear and are engaged with the driving gear, the first slider assembly and the second slider assembly are movably supported in the guide rail assembly and are connected with both ends of the curtain pull rod respectively.

[0009] Further, the first guide groove and the second guide groove are integrally formed in the top bracket assembly, the top bracket assembly is integrally provided with a groove wall portion on the outer circumferential side of the first guide groove and on the outer circumferential side of the second guide groove.

[0010] Further, the curtain retracting mechanism in the vehicle further comprises a first guide pipe and a second guide pipe both fixed to the top bracket assembly, the first guide groove is arranged in the first guide pipe and the second guide groove is arranged in the second guide pipe, the first guide pipe and the second guide pipe are metal pipes, a first opening is formed on the first guide pipe and faces the driving gear and allows the first engaging section to be exposed, a second opening is formed on the second guide pipe and faces the driving gear and allows the second engaging section to be exposed, and the first opening and the second opening are half-moon shaped openings.

[0011] Further, the winding drive source is a motor and the driving gear is fixed on the output shaft of the motor.

[0012] Further, the first slider assembly and the second slider assembly both comprise a slider body, a cable limiter assembled at the end of the slider body, and a compression spring assembled in the slider body, two ends of the compression spring respectively abutting against the inner wall of the slider body and the cable limiter;

[0013] The end part of the first bending transmission section is arranged in the compression spring of the first slider assembly and fixed with the cable limiter, and the slider body of the first slider assembly is fixed with one end of the curtain pull rod and the end of the fourth bending transmission section respectively.

[0014] The end part of the third bending transmission section is arranged in the compression spring of the second slider assembly and fixed with the cable limiter, and the slider body of the second slider assembly is fixed with the other end of the curtain pull rod and the end of the second bending transmission section respectively.

[0015] Further, the first engaging section and the second engaging section are both flexible shafts, and the first bending transmission section, the second bending transmission section, the third bending transmission section and the fourth bending transmission section are all steel wires.

[0016] Further, the first composite cable and the second composite cable are both provided with a press-in joint and a plastic-coated joint at the connection between the flexible shaft and the steel wire, two ends of the press-in joint are respectively provided with a first press-in hole and a second press-in hole, the end of the flexible shaft is press-in in the first press-in hole, the end of the steel wire is press-in in the second press-in hole, and the plastic-coated joint is wrapped around the outer periphery of the press-in joint.

[0017] Further, the in-vehicle curtain folding and unfolding mechanism further comprises a first fixed pulley, a second fixed pulley, a third fixed pulley, a fourth fixed pulley, a fifth fixed pulley and a sixth fixed pulley, all of which can rotate around a fixed axis, the first fixed pulley is arranged at the upper bending part of the first bending transmission section, the second fixed pulley and the third fixed pulley are arranged at the upper bending part and the lower bending part of the second bending transmission section respectively, the fourth fixed pulley is arranged at the upper bending part of the third bending transmission section, and the fifth fixed pulley and the sixth fixed pulley are arranged at the upper bending part and the lower bending part of the fourth bending transmission section respectively.

[0018] Further, the lower end of the projection curtain is provided with a winding part, a support rod is inserted in the winding part, the curtain pull rod is provided with a mounting groove penetrating along the extension direction thereof, and the winding part and the support rod are inserted in the mounting groove.

[0019] Further, the guide rail assembly comprises a left guide rail and a right guide rail which are fixedly arranged, and a guide rail sliding groove extending upward and downward is formed in each of the left guide rail and the right guide rail, and a left zipper and a right zipper are fixedly arranged at the left edge and the right edge of the projection curtain respectively, and the zipper of the left zipper is movably clamped in the guide rail sliding groove of the left guide rail, and the zipper of the right zipper is movably clamped in the guide rail sliding groove of the right guide rail.

[0020] The utility model also provides a car projection curtain system, including projection equipment and the car curtain folding and unfolding mechanism as described above, when the winding drive source drives the curtain pull rod to move down through the drive gear, first compound cable and second compound cable, the projection curtain is unfolded, and the projection equipment is aligned with the projection curtain.

[0021] As described above, the car curtain folding and unfolding mechanism and the car projection curtain system have the following beneficial effects:

[0022] The first compound cable and the second compound cable are driven to move down or up by the winding drive source, and the projection curtain is unfolded downward or folded upward correspondingly. In particular, the first compound cable and the second compound cable adopt a compound segment structure, and the first engagement segment and the second engagement segment are always accommodated in the first guide groove and the second guide groove respectively when running, so that the first engagement segment and the second engagement segment are not bent greatly, ensuring the accuracy of the engagement transmission with the drive gear, thereby ensuring the stability of the overall operation of the car curtain folding and unfolding mechanism, so that the first compound cable and the second compound cable run synchronously, thereby avoiding the inclination of the projection curtain. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 And Figure 2 It is the structure schematic drawing of the car curtain folding and unfolding mechanism under different visual angles.

[0024] Figure 3 It is the front view of the car curtain folding and unfolding mechanism, namely the rear view.

[0025] Figure 4 It is Figure 1 the A ring enlarged view.

[0026] Figure 5 It is Figure 1 the B ring enlarged view.

[0027] Figure 6 It is the longitudinal sectional view of the car curtain folding and unfolding mechanism.

[0028] Figure 7 It is the transverse sectional view of the car curtain folding and unfolding mechanism.

[0029] Figure 8 The connection diagram of the first composite cable and the second composite cable in the curtain folding mechanism of the vehicle.

[0030] Figure 9 The Figure 8 The state diagram of the first slider assembly and the second slider assembly in the synchronous downward movement.

[0031] Figure 10 The Figure 8 The state diagram of the first slider assembly and the second slider assembly in the synchronous upward movement.

[0032] Figure 11 The Figure 8 The exploded view.

[0033] Figure 12 The structure diagram of the first composite cable and the second composite cable in the curtain folding mechanism of the vehicle.

[0034] Figure 13 The structure diagram of the flexible shaft in the first composite cable and the second composite cable.

[0035] Figure 14 The structure diagram of the steel wire rope in the first composite cable and the second composite cable.

[0036] Figure 15 The connection diagram of the flexible shaft and the steel wire rope in the first composite cable and the second composite cable.

[0037] Figure 16 The assembly diagram of the curtain folding mechanism of the vehicle at the first slider assembly.

[0038] Figure 17 The Figure 16 The sectional view.

[0039] Figure 18 The connection diagram of the steel wire rope and the cable terminal in the first composite cable and the second composite cable.

[0040] Figure 19 The assembly diagram of the curtain folding mechanism of the vehicle at the second slider assembly.

[0041] Figure 20 The structure diagram of another embodiment of the curtain folding mechanism of the vehicle.

[0042] Figure 21 The structure diagram of another embodiment of the top support assembly.

[0043] Figure 22 The structure diagram of another embodiment of the top support assembly.

[0044] Component designation explanation

[0045] 10 Top support assembly

[0046] 101. Tank wall section

[0047] 20 Guide rail assembly

[0048] 21 Left guide rail

[0049] 22 Right guide rail

[0050] 30 Screen Roll-up Assembly

[0051] 40 Projection screen

[0052] 41 Winding section

[0053] 42 Support rod

[0054] 43. Left side zipper

[0055] 44. Right side zipper

[0056] 50-roll take-up drive source

[0057] 60 drive gear

[0058] 70 First composite cable

[0059] 71 First meshing section

[0060] 72 First bending transmission section

[0061] 73 Second bending transmission section

[0062] 74 First slider assembly

[0063] 80 Second composite cable

[0064] 81 Second meshing section

[0065] 82 Third bend transmission section

[0066] 83 Fourth bending transmission section

[0067] 84 Second slider assembly

[0068] 90 First guide groove

[0069] 91 First Opening

[0070] 92 First guide tube

[0071] 110 Second guide groove

[0072] 111 Second opening

[0073] 112 second guide tube

[0074] 120 curtain rod

[0075] 131 slider body

[0076] 132 cable limiter

[0077] 133 compression spring

[0078] 134 cable terminal

[0079] 135 cable cap

[0080] 140 press-in joint

[0081] 150 plastic-coated joint

[0082] 161 first fixed pulley

[0083] 162 second fixed pulley

[0084] 163 third fixed pulley

[0085] 164 fourth fixed pulley

[0086] 165 fifth fixed pulley

[0087] 166 sixth fixed pulley

[0088] 170 positioning sheet

[0089] 180 tensioning support rod

[0090] 190 pulley support

[0091] 200 cover plate DETAILED DESCRIPTION

[0092] The implementation of the present application will be described by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the present specification.

[0093] It should be noted that the structure, proportion, size and the like shown in the drawings of the present application are only used to cooperate with the disclosed content, to be understood and read by those skilled in the art, and do not have technical significance, and any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes of the present application, should still fall within the scope of the disclosed technology.

[0094] It should also be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or can have a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or can be indirectly connected to the other element through a middle element.

[0095] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features indicated or the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0096] The utility model provides a kind of car interior curtain retraction mechanism, and the car interior projection curtain system comprising the car interior curtain retraction mechanism.

[0097] As Figures 1 to 3 , Figure 6 And Figure 7As shown, the utility model relates to a curtain retracting mechanism in a vehicle, which comprises a top bracket assembly 10 and a guide rail assembly 20 both used for being installed in the vehicle, a curtain winding assembly 30 installed on the top bracket assembly 10, a projection curtain 40, a winding drive source 50 fixedly installed on the top bracket assembly 10, a driving gear 60, a first composite cable 70, a second composite cable 80, a first guide groove 90 and a second guide groove 110 both fixedly arranged on the top bracket assembly 10, and a curtain pull rod 120 fixed on the lower end of the projection curtain 40, wherein the upper end of the projection curtain 40 is wound and connected to the curtain winding assembly 30. The top bracket assembly 10 is usually a fixed structure, and the length of the top bracket assembly 10 matches the width of the projection curtain 40.

[0098] Further, the first composite cable 70 and the second composite cable 80 have the same structure and both adopt a composite segment structure. Specifically, as shown in Figure 8 、 Figure 11 and Figure 12 , the first composite cable 70 comprises a first engaging segment 71 movably received in the first guide groove 90, a first bending transmission segment 72 connected to the right end of the first engaging segment 71, a second bending transmission segment 73 connected to the left end of the first engaging segment 71, and a first sliding block assembly 74 connected to the end of the first bending transmission segment 72, and the second composite cable 80 comprises a second engaging segment 81 movably received in the second guide groove 110, a third bending transmission segment 82 connected to the left end of the second engaging segment 81, a fourth bending transmission segment 83 connected to the right end of the second engaging segment 81, and a second sliding block assembly 84 connected to the end of the third bending transmission segment 82, wherein the first sliding block assembly 74 and the second sliding block assembly 84 are distributed on the right side and the left side of the projection curtain 40 along the width direction of the projection curtain 40; the end of the fourth bending transmission segment 83 is connected to the first sliding block assembly 74, and the end of the second bending transmission segment 73 is connected to the second sliding block assembly 84. The winding drive source 50 is connected to the driving gear 60 and drives the driving gear 60 to rotate, the first engaging segment 71 and the second engaging segment 81 are symmetrically arranged on the front and back sides of the driving gear 60 and are engaged with the driving gear 60, and the first sliding block assembly 74 and the second sliding block assembly 84 are movably supported in the guide rail assembly 20 and are connected to the left and right ends of the curtain pull rod 120, respectively.

[0099] The projection curtain system in the vehicle comprises the above-mentioned curtain retracting mechanism and a projection device, and the projection device can be a projector or a mobile phone. When the projection device is a projector, the projector is accommodated in the top interior space above the rear seats, and an opening is formed on the vehicle interior, which allows the lens at the front end of the projector to be exposed.

[0100] When the projection curtain system in the vehicle is not used, the projection curtain 40 is in a retracted state, and the curtain pull rod 120 is located at a high position.

[0101] As shown in FIG. 6, when the vehicle projection curtain system is used, the retraction driving source 50 drives the driving gear 60 to rotate, and the driving gear 60 rotates counterclockwise in the top view. Then, the first meshing section 71 moves to the right, and the second meshing section 81 moves to the left. At this time, the first bending transmission section 72 pulls the first slider assembly 74 to move downward, and the third bending transmission section 82 pulls the second slider assembly 84 to move upward. Thus, the first slider assembly 74 and the second slider assembly 84 move synchronously, and the curtain pull rod 120 moves downward, so that the projection curtain 40 moves downward and gradually winds on the curtain retraction assembly 30 until the projection curtain 40 is in the retracted state. Figure 9 As shown in FIG. 7, when the vehicle projection curtain system is used, the retraction driving source 50 drives the driving gear 60 to rotate, and the driving gear 60 rotates counterclockwise in the top view. Then, the first meshing section 71 moves to the right, and the second meshing section 81 moves to the left. At this time, the first bending transmission section 73 pulls the first slider assembly 74 to move downward, and the fourth bending transmission section 83 pulls the second slider assembly 84 to move downward. Thus, the first slider assembly 74 and the second slider assembly 84 move synchronously downward, and the curtain pull rod 120 moves downward, so that the projection curtain 40 moves downward and gradually winds on the curtain retraction assembly 30 until the projection curtain 40 is in the retracted state.

[0102] Figure 10 As shown in FIG. 8, when the vehicle projection curtain system is used, the retraction driving source 50 drives the driving gear 60 to rotate, and the driving gear 60 rotates clockwise in the top view. Then, the first meshing section 71 moves to the left, and the second meshing section 81 moves to the right. At this time, the first bending transmission section 72 pulls the first slider assembly 74 to move upward, and the third bending transmission section 82 pulls the second slider assembly 84 to move upward. Thus, the first slider assembly 74 and the second slider assembly 84 move synchronously upward, and the curtain pull rod 120 moves upward, so that the projection curtain 40 moves upward and gradually winds on the curtain retraction assembly 30 until the projection curtain 40 is in the retracted state.

[0103] Therefore, the rotation of the driving gear 60 driven by the retraction driving source 50 drives the first composite cable 70 and the second composite cable 80 to move the curtain pull rod 120 downward or upward, and correspondingly realizes the downward unfolding or upward retraction of the projection curtain 40. In particular, the first composite cable 70 and the second composite cable 80 both adopt a composite section structure, and the first meshing section 71 and the second meshing section 81 are always accommodated in the first guide groove 90 and the second guide groove 110 respectively when running, so that the first meshing section 71 and the second meshing section 81 cannot be bent greatly, ensuring the accuracy of the meshing transmission with the driving gear 60, thereby ensuring the stability of the overall operation of the vehicle curtain retraction mechanism, so that the first composite cable 70 and the second composite cable 80 operate synchronously, thereby avoiding the inclination of the projection curtain 40.

[0104] Further, as shown in FIG. 9, the retraction driving source 50 is a motor, the driving gear 60 is fixed on the output shaft of the motor, and the driving gear 60 is horizontally arranged. The motor is fixed on the top bracket assembly 10 by bolts, and the top bracket assembly 10 is fixed with a positioning piece 170, so as to realize the positioning installation of the overall vehicle curtain retraction mechanism in the vehicle. Figure 4 Figure 6 ​​As shown, the curtain winding assembly 30 is placed below the top support assembly 10, and the curtain winding assembly 30 has a rotatable winding shaft.

[0105] Further, the mounting structure between the projection curtain 40 and the curtain pull rod 120 is as follows: Figure 6 As shown, the lower end of the projection curtain 40 is formed with a winding portion 41 by turning, the winding portion 41 is inserted with a support rod 42, the support rod 42 can be selected from a steel wire, the curtain pull rod 120 is provided with a mounting slot penetrating left and right along the extension direction thereof, the winding portion 41 and the support rod 42 are inserted in the mounting slot, thereby fixing the curtain pull rod 120 at the lower end of the projection curtain 40. The curtain pull rod 120 can be linear, or single-curved, or double-curved, and a handle can be arranged on the curtain pull rod 120 to realize the lifting of the head space of the vehicle roof and the demand of different interior modeling.

[0106] Further, the guide rail assembly 20 in the present application can be a fixed guide rail structure or a movable guide rail structure.

[0107] When the guide rail assembly 20 is a fixed guide rail structure, as shown in Figures 1 to 3 The guide rail assembly 20 includes a left guide rail 21 and a right guide rail 22 which are both fixedly arranged, and the left guide rail 21 and the right guide rail 22 are both provided with guide rail sliding grooves extending upward and downward. The left guide rail 21 and the right guide rail 22 are both fixed to the B-pillar of the vehicle body, so that the left and right sides of the projection curtain 40 can extend to the B-pillar of the vehicle body, and the left and right edges of the projection curtain 40 in the width direction are closer to the B-pillar of the vehicle body, thereby realizing a wider projection screen, that is, a larger display effect, and better playing a role in isolating and separating the front and rear spaces. Preferably, as shown in Figure 5 The left and right edges of the projection curtain 40 are respectively sewn and fixed with a left zipper 43 and a right zipper 44, the teeth of the left zipper 43 are movably clamped in the guide rail sliding groove of the left guide rail 21, and the teeth of the right zipper 44 are movably clamped in the guide rail sliding groove of the right guide rail 22, so that the projection curtain 40 is always in a taut state in the width direction. And, as shown in Figure 6 The in-vehicle curtain winding and unwinding mechanism further includes a tensioning support rod 180, which is placed below and behind the curtain winding assembly 30, and the tensioning support rod 180 acts on the back surface, that is, the front surface of the upper part of the projection curtain 40, so that the projection curtain 40 at this position is bent back by an angle, thereby making the projection curtain 40 always in a taut state during the lifting process.

[0108] When the guide rail assembly 20 is a movable guide rail structure, as shown in Figure 20As shown, the guide rail assembly 20 includes a left guide rail 21 and a right guide rail 22, both of which are movably arranged, and the upper end of the left guide rail 21 and the upper end of the right guide rail 22 can rotate around a fixed axis; thus, when the in-car projection curtain system is not in use, the left guide rail 21 and the right guide rail 22 are both in an inclined state and are accommodated in the interior space at the B-pillar of the vehicle body B; when the in-car projection curtain system is in use, the left guide rail 21 is first driven to rotate to the vertical state to the right, and the right guide rail 22 is driven to rotate to the vertical state to the left, and then the curtain pull rod 120 is driven downward by the retraction drive source 50 through the drive gear 60, the first composite cable 70 and the second composite cable 80.

[0109] Further, as shown in Figs. 1 and 2, Figure 5 and Figure 8 As shown, the in-car curtain retraction mechanism further includes a first fixed pulley 161, a second fixed pulley 162, a third fixed pulley 163, a fourth fixed pulley 164, a fifth fixed pulley 165 and a sixth fixed pulley 166, all of which can rotate around a fixed axis extending front to back, the first fixed pulley 161 is arranged at the upper bend of the first bent transmission section 72, the second fixed pulley 162 and the third fixed pulley 163 are arranged at the upper bend and the lower bend of the second bent transmission section 73 respectively, the fourth fixed pulley 164 is arranged at the upper bend of the third bent transmission section 82, and the fifth fixed pulley 165 and the sixth fixed pulley 166 are arranged at the upper bend and the lower bend of the fourth bent transmission section 83 respectively. Therefore, the first bent transmission section 72 is connected to the first slider assembly 74 after passing around the first fixed pulley 161, the second bent transmission section 73 is connected to the second slider assembly 84 after passing around the second fixed pulley 162 and the third fixed pulley 163, the third bent transmission section 82 is connected to the left second slider assembly 84 after passing around the fourth fixed pulley 164, and the fourth bent transmission section 83 is connected to the right first slider assembly 74 after passing around the fifth fixed pulley 165 and the sixth fixed pulley 166. The change of transmission direction is achieved by the six fixed pulleys, and the running tracks of the first bent transmission section 72, the second bent transmission section 73, the third bent transmission section 82 and the fourth bent transmission section 83 inside the left guide rail 21 and the right guide rail 22 are also determined.

[0110] In addition, in the in-car curtain retraction mechanism, as shown in Figs. 1 and 2, Figure 5 the first fixed pulley 161 and the fifth fixed pulley 165 are right upper fixed pulleys, both of which are mounted on the same pulley bracket 190, and the pulley bracket 190 is fixed to the right end of the top bracket assembly 10 by screws; the second fixed pulley 162 and the fourth fixed pulley 164 are left upper fixed pulleys, both of which are mounted on the same pulley bracket 190, and the pulley bracket 190 is fixed to the left end of the top bracket assembly 10 by screws; as shown in Figs. 1 and 2, Figure 19 the third fixed pulley 163 is a left lower fixed pulley, which is separately mounted on a pulley bracket 190, and the pulley bracket 190 is fixed to the inner side of the left guide rail 21; as shown in Figs. 1 and 2, Figure 16As shown, the sixth fixed pulley 166 is a lower right fixed pulley, which is separately mounted on a pulley support 190 fixed to the inner side of the right guide rail 22.

[0111] Further, the first guide groove 90 and the second guide groove 110 can be directly formed in the top bracket assembly 10, or can be formed by fixing a guide pipe on the top bracket assembly 10. Specifically, Figure 21 Or Figure 22 In the top bracket assembly 10 shown, the first guide groove 90 and the second guide groove 110 are integrally formed in the top bracket assembly 10, and the top bracket assembly 10 integrally has a groove wall portion 101 on the outer circumferential side of the first guide groove 90 and the outer circumferential side of the second guide groove 110. Since the first guide groove 90 and the second guide groove 110 are integrally formed in the top bracket assembly 10 and are attached to the top bracket assembly 10, the guide pipe is not additionally provided, thereby reducing the cost. Figure 21 In the top bracket assembly 10 shown, the groove wall portion 101 has multiple segments, and axially adjacent two segments of the groove wall portion 101 are distributed at 180° in the circumferential direction. Figure 22 In the top bracket assembly 10 shown, the first guide groove 90 and the second guide groove 110 formed in the top bracket assembly 10 are substantially U-shaped grooves, and the top bracket assembly 10 has a cover plate 200 fixed on the top of the first guide groove 90 and the second guide groove 110, so that the first engaging segment 71 and the second engaging segment 81 are better accommodated in the first guide groove 90 and the second guide groove 110; preferably, the fixing manner between the top bracket assembly 10 and the cover plate 200 can be that the buckle and the slot are arranged to achieve buckling fixation, or the two are fixed by screws.

[0112] Alternatively, as shown, Figure 4 As shown, the top bracket assembly 10 has a first guide pipe 92 and a second guide pipe 112 fixed thereon, the first guide groove 90 is arranged in the first guide pipe 92, and the second guide groove 110 is arranged in the second guide pipe 112. Preferably, the first guide pipe 92 and the second guide pipe 112 are metal pipes without large bending, so as to avoid large bending of the first engaging segment 71 and the second engaging segment 81; and the metal first guide pipe 92 and the second guide pipe 112 can also effectively isolate noise, so that the overall operation noise of the interior curtain retraction mechanism is extremely low, achieving low-noise operation and smoother operation. The first guide pipe 92 has a first opening 91 facing the drive gear 60 and allowing the first engaging segment 71 to be exposed, and the first engaging segment 71 engages with the drive gear 60 at the first opening 91; the second guide pipe 112 has a second opening 111 facing the drive gear 60 and allowing the second engaging segment 81 to be exposed, and the second engaging segment 81 engages with the drive gear 60 at the second opening 111; the first opening 91 and the second opening 111 are preferably half-moon-shaped openings.

[0113] Alternatively, in some embodiments, the first guide slot 90 and the second guide slot 110 in the top support assembly 10 are used in combination with the additionally added first guide tube 92 and the second guide tube 112, the first guide slot 90 and the second guide slot 110 in the top support assembly 10 are suitable for coarse cable components, and the first guide tube 92 and the second guide tube 112 are suitable for fine cable components.

[0114] Further, as shown in Figure 8 and Figure 11 , the first composite cable 70 and the second composite cable 80 are both hybrid soft shaft structures, that is, the first engaging section 71 and the second engaging section 81 are soft shafts, and the first bending transmission section 72, the second bending transmission section 73, the third bending transmission section 82 and the fourth bending transmission section 83 are steel wire ropes. Preferably, the soft shafts constituting the first engaging section 71 and the second engaging section 81 are formed in the manner that, as shown in Figure 13 , the soft shaft includes an inner core shaft and a spiral outer shaft spirally wound on the inner core shaft, and the spiral outer shaft is formed with an engaging groove engaged with the driving gear 60. More preferably, an existing steel wire with an inner core shaft and a spiral outer shaft structure can be selected, and after the outer skin is peeled off, the soft shaft described above can be directly made. As shown in Figure 14 , the steel wire ropes constituting the first bending transmission section 72, the second bending transmission section 73, the third bending transmission section 82 and the fourth bending transmission section 83 are multi-strand structures, and each strand is a multi-strand structure itself; in this embodiment, seven strands of wire are spirally interwoven into a small strand, and seven small strands of wire are spirally interwoven into a large strand, which is a steel wire rope. The steel wire rope has a small turning radius, saves space, and can make the arrangement of the curtain retracting mechanism in the vehicle more flexible.

[0115] Further, as shown in Figure 15 , the first composite cable 70 and the second composite cable 80 are both provided with a press-in joint 140 and a plastic-coated joint 150 at the connection between the soft shaft and the steel wire rope, the two ends of the press-in joint 140 are respectively provided with a first press-in hole and a second press-in hole, the end of the soft shaft is press-fitted into the first press-in hole with a diameter of about 2.6 mm using a press-in machine, and the end of the steel wire rope is press-fitted into the second press-in hole with a diameter of about 1.2 mm using a press-in machine, so as to fixedly connect the soft shaft and the steel wire rope. Then, the outer side is injection molded to form the plastic-coated joint 150 wrapped around the outer periphery of the press-in joint 140, preventing the press-in joint 140 made of metal from being exposed. Taking the connection between the first engaging section 71 of the first composite cable 70 and the first bending transmission section 72 as an example, the first engaging section 71 is press-fitted into the first press-in hole with a diameter of about 2.6 mm in the press-in joint 140, and the first bending transmission section 72 is press-fitted into the second press-in hole with a diameter of about 1.2 mm in the press-in joint 140.

[0116] Further, as shown in Figures 16 to 19As shown, the first slider assembly 74 and the second slider assembly 84 both include a slider body 131, a cable limiter 132 assembled at the end of the slider body 131, a compression spring 133 assembled in the cylindrical portion of the slider body 131, a cable terminal 134 and a cable cap 135, both ends of the compression spring 133 abutting against the inner wall of the slider body 131 and the cable limiter 132 respectively.

[0117] At the first slider assembly 74: as shown, Figure 16 and Figure 17 As shown, the end section of the first bending transmission section 72 is threaded into the compression spring 133 of the first slider assembly 74 and riveted and fixed with the cable limiter 132 using a riveting machine, so that the end of the first bending transmission section 72 is fixed with the cable limiter 132, and then the cable cap 135 is installed at the left end of the cylindrical portion of the slider body 131 of the first slider assembly 74, so that the cable cap 135 abuts against the outer end side of the cable limiter 132, thereby fixing the left end of the compression spring 133 in the first slider assembly 74. In this way, the compression spring 133 in the first slider assembly 74 exerts a pulling force on the first bending transmission section 72, so that the first bending transmission section 72 is always in a taut state. At the same time, the slider body 131 of the first slider assembly 74 is also fixed with the right end of the curtain pull rod 120. As shown, Figure 18 As shown, the end of the fourth bending transmission section 83 is riveted with the cable terminal 134, which is fixed in the slider body 131 of the first slider assembly 74 after passing around the sixth fixed pulley 166, thereby fixing and connecting the end of the fourth bending transmission section 83 with the slider body 131 of the first slider assembly 74.

[0118] At the second slider assembly 84: as shown, Figure 19As shown, the end part of the third bending transmission section 82 is arranged in the compression spring 133 of the second slider assembly 84, and the cable limiter 132 is fixed by using a press riveter, so that the cable limiter 132 is fixed at the end of the third bending transmission section 82, and then the cable cap 135 is installed at the right end of the cylindrical part of the slider body 131 of the second slider assembly 84, so that the cable cap 135 abuts against the outer end side of the cable limiter 132, thereby fixing the right end of the compression spring 133 in the second slider assembly 84. In this way, the third bending transmission section 82 is always in a taut state by the tension of the compression spring 133 in the second slider assembly 84. Meanwhile, the slider body 131 of the second slider assembly 84 is also fixed with the left end of the curtain pull rod 120. The cable terminal 134 is riveted at the end of the second bending transmission section 73, and the cable terminal 134 is fixed in the slider body 131 of the second slider assembly 84 after passing through the third fixed pulley 163, thereby fixing and connecting the end of the second bending transmission section 73 with the slider body 131 of the second slider assembly 84. Finally, the first composite cable 70 and the second composite cable 80 form a loop, and the two are linked to move simultaneously and in the same direction.

[0119] The in-vehicle curtain retraction mechanism with the above structure has good feasibility of platform production. When the projection size of the projection curtain 40 needs to be adjusted, only the size of the top support assembly 10 in the left-right direction and the size of the guide rail assembly 20 in the up-down direction need to be adjusted, so that the free change of the projection size can be realized under the existing process conditions, and the installation requirements of different types of vehicles can be adapted. In addition, a plurality of elastic components can be configured in the in-vehicle curtain retraction mechanism, which is used to absorb the size error of the parts, so that each part is always in a tight fit state when the system changes due to temperature change or passes through a twisted road, and the abnormal sound problem caused by thermal expansion and cold contraction or uneven stress of the parts is avoided.

[0120] In summary, the utility model effectively overcomes the shortcomings in the prior art and has high industrial utilization value.

[0121] The above embodiments only exemplarily illustrate the principles and effects of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A vehicle interior screen retraction mechanism, comprising a top bracket assembly (10) and a guide rail assembly (20) for installation inside a vehicle, a screen retraction assembly (30) mounted on the top bracket assembly (10), and a projection screen (40), the upper end of which is wound and connected to the screen retraction assembly (30), characterized in that: It also comprises a winding drive source (50), a driving gear (60), a first composite cable (70), a second composite cable (80), a first guide slot (90) and a second guide slot (110) all fixed to the top support assembly (10), and a curtain pull rod (120) fixed to the lower end of the projection curtain (40); The first composite cable (70) comprises a first engaging section (71) movably received in the first guide slot (90), a first bent transmission section (72) and a second bent transmission section (73) connected to the two ends of the first engaging section (71) respectively, and a first slider assembly (74) connected to the end of the first bent transmission section (72); the second composite cable (80) comprises a second engaging section (81) movably received in the second guide slot (110), a third bent transmission section (82) and a fourth bent transmission section (83) connected to the two ends of the second engaging section (81) respectively, and a second slider assembly (84) connected to the end of the third bent transmission section (82); the end of the fourth bent transmission section (83) is connected to the first slider assembly (74), and the end of the second bent transmission section (73) is connected to the second slider assembly (84). The winding drive source (50) is connected to the driving gear (60) and drives the driving gear (60) to rotate; the first engaging section (71) and the second engaging section (81) are symmetrically arranged on the two sides of the driving gear (60) and are in engagement with the driving gear (60); the first slider assembly (74) and the second slider assembly (84) are movably supported in the guide rail assembly (20) and are connected to the two ends of the curtain pull rod (120) respectively.

2. The in-vehicle curtain deployment mechanism according to claim 1, characterized by: The first guide slot (90) and the second guide slot (110) are integrally formed in the top support assembly (10); the top support assembly (10) is integrally provided with a slot wall portion (101) on the outer circumferential side of the first guide slot (90) and on the outer circumferential side of the second guide slot (110).

3. The in-vehicle curtain retractor according to claim 1, characterized by: It also comprises a first guide tube (92) and a second guide tube (112) both fixed to the top support assembly (10); the first guide slot (90) is arranged in the first guide tube (92), and the second guide slot (110) is arranged in the second guide tube (112); the first guide tube (92) and the second guide tube (112) are metal tubes; the first guide tube (92) is provided with a first opening (91) facing the driving gear (60) and allowing the first engaging section (71) to be exposed; the second guide tube (112) is provided with a second opening (111) facing the driving gear (60) and allowing the second engaging section (81) to be exposed; the first opening (91) and the second opening (111) are half-moon shaped openings.

4. The in-vehicle curtain deployment mechanism according to claim 1, characterized by: The winding drive source (50) is a motor, and the driving gear (60) is fixed to the output shaft of the motor.

5. The in-vehicle curtain deployment mechanism according to claim 1, characterized by: The first slider assembly (74) and the second slider assembly (84) both comprise a slider body (131), a cable limiter (132) assembled at the end of the slider body (131), and a compression spring (133) assembled in the slider body (131), the two ends of the compression spring (133) abutting against the inner wall of the slider body (131) and the cable limiter (132) respectively; The end part of the first bending transmission section (72) is arranged in the compression spring (133) of the first slider assembly (74) and fixed with the cable limiter (132), the slider body (131) of the first slider assembly (74) is fixed with one end of the curtain pull rod (120) and the end of the fourth bending transmission section (83) respectively; The end part of the third bending transmission section (82) is arranged in the compression spring (133) of the second slider assembly (84) and fixed with the cable limiter (132), the slider body (131) of the second slider assembly (84) is fixed with the other end of the curtain pull rod (120) and the end of the second bending transmission section (73) respectively.

6. The in-vehicle curtain deployment mechanism according to claim 1, characterized by: The first engaging section (71) and the second engaging section (81) are both flexible shafts, and the first bending transmission section (72), the second bending transmission section (73), the third bending transmission section (82) and the fourth bending transmission section (83) are all steel wires.

7. The in-vehicle curtain retractor according to claim 6, characterized by: The first composite cable (70) and the second composite cable (80) are provided with a press-in joint (140) and a plastic-coated joint (150) at the connection between the flexible shaft and the steel wire, the two ends of the press-in joint (140) are provided with a first press-in hole and a second press-in hole respectively, the end of the flexible shaft is press-in in the first press-in hole, the end of the steel wire is press-in in the second press-in hole, and the plastic-coated joint (150) is wrapped around the outer periphery of the press-in joint (140).

8. The in-vehicle curtain retractor according to claim 1, characterized by: The first fixed pulley (161), the second fixed pulley (162), the third fixed pulley (163), the fourth fixed pulley (164), the fifth fixed pulley (165) and the sixth fixed pulley (166) can all rotate around the fixed axis, the first fixed pulley (161) is arranged at the upper bending part of the first bending transmission section (72), the second fixed pulley (162) and the third fixed pulley (163) are arranged at the upper bending part and the lower bending part of the second bending transmission section (73) respectively, the fourth fixed pulley (164) is arranged at the upper bending part of the third bending transmission section (82), and the fifth fixed pulley (165) and the sixth fixed pulley (166) are arranged at the upper bending part and the lower bending part of the fourth bending transmission section (83) respectively.

9. The in-vehicle curtain retractor according to claim 1, characterized by: The lower end of the projection curtain (40) is provided with a winding part (41), the support rod (42) is inserted in the winding part (41), the mounting groove is arranged in the curtain pull rod (120) along the extension direction of the curtain pull rod (120), and the winding part (41) and the support rod (42) are inserted in the mounting groove.

10. The in-vehicle curtain deployment mechanism of claim 1, wherein: The guide rail assembly (20) comprises a left guide rail (21) and a right guide rail (22) which are fixedly arranged, and a guide rail sliding groove extending upward and downward is formed in each of the left guide rail (21) and the right guide rail (22), a left zipper (43) and a right zipper (44) are fixedly arranged at the left edge and the right edge of the projection curtain (40) respectively, the zipper teeth of the left zipper (43) are movably clamped in the guide rail sliding groove of the left guide rail (21), and the zipper teeth of the right zipper (44) are movably clamped in the guide rail sliding groove of the right guide rail (22).

11. An in-vehicle projection screen system comprising a projection device, characterized by: The projection curtain (40) is unfolded when the winding drive source (50) drives the curtain pull rod (120) to move downward through the driving gear (60), the first composite cable (70) and the second composite cable (80), and the projection device is aligned with the projection curtain (40).

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