CN111688450A - One-way friction assembly - Google Patents

Abstract

The application of this division relates to a one-way friction subassembly, include and be connected driven with one-way inner tube (102) get rid of piece (131), more than one set up get rid of pearl groove (132) on getting rid of piece (131) and install get rid of pearl (133) in each gets rid of pearl groove (132), one-way friction subassembly (13) still are equipped with and get rid of piece (131) assorted and get rid of a chamber (511), thereby get rid of pearl (133) when one-way inner tube (102) clockwise rotation and can throw away and get rid of a chamber (511) looks friction production frictional resistance along getting rid of pearl groove (132). The one-way friction assembly (13) also comprises more than one group of speed increasing gear sets (14) connected between the one-way inner pipe (102) and the throwing piece (131). The automobile vehicle-mounted movable projection curtain with the sun shading function, which uses the one-way friction assembly, can be automatically retracted at a constant speed under the action of the one-way friction assembly, and is high in convenience and long in service life.

Description

One-way friction assembly

The application is divisional application with application number 201710985480.5, application date 2017-10-20 and invention name 'automobile vehicle-mounted movable projection curtain with sun-shading function and projection system'.

Technical Field

The invention relates to the field of automobile articles, in particular to an automobile vehicle-mounted movable projection curtain with a sun-shading function.

Background

With the improvement of living standard, automobiles are more and more popularized, people have higher and higher requirements on automobile configuration, but at present, the entertainment system on the automobiles is only provided with a navigation multimedia system on an instrument panel, but is limited by the size of a screen, and passengers cannot comfortably enjoy videos and audios.

In addition, various automobiles in the current market do not have a sunshade in the automobile before leaving the factory, some middle-high-grade cars only have a sunshade on the left window and the right window of the back row, in hot summer, after the automobiles are parked under the sun for a period of time, the temperature in the automobiles can be rapidly increased, people cannot adapt to the temperature in the automobiles, the windows of the automobiles must be opened first before entering the automobiles to cool down, and the aging of all parts in the automobiles can be accelerated, so that a lot of automobile glass is pasted with a sunshade, but for the requirement of visual field, the automobile front windshield cannot be pasted with a film, people usually use the sunshade to shield the front windshield, and the automobile is taken down when driving. Present front windshield sunshade screen, it is left and right pull-open type mostly, this kind of mode can not carry out better laminating with windshield to because the length of stretching out of pulling back sunshade screen cloth from a left side to the right side is great, makes the edge of curtain cloth curl easily when the rolling, causes the rolling unevenness of curtain cloth, is died by the card easily, thereby causes the damage of projection curtain, and need whole hand-held sunshade screen lower beam parallel recovery when curtain cloth retrieves. And current sunshade screen is pulling out the back, and the pull-out end must be continuously handheld and in time fix, otherwise just can withdraw because of elasticity is automatic, and in addition, current sunshade screen all adopts vacuum chuck to fix on windshield in the front, and this kind of fixed mode is insecure, and the sun shines and has become when long-term or meet little jolting and will drop, influences result of use and driving safety, can only be when using fixed operation in the field to be unsuitable for hanging windshield's top in the front for a long time.

Disclosure of Invention

The invention aims to provide a one-way friction assembly which can generate friction resistance when a sun-shading curtain cloth is retracted so as to realize uniform retraction.

In order to achieve the above object, the present invention is realized by:

the utility model provides a one-way friction subassembly, includes with one-way inner tube (102) be connected driven get rid of piece (131), more than one set up get rid of pearl groove (132) on getting rid of piece (131) and install get rid of pearl (133) in each get rid of pearl groove (132), one-way friction subassembly (13) still are equipped with and get rid of a chamber (511) that gets rid of (131) assorted, thereby get rid of pearl (133) and can throw away along getting rid of pearl groove (132) and get rid of a chamber (511) looks friction and produce frictional resistance when one-way inner tube (102) clockwise turning.

In order to further increase the friction force of the one-way friction assembly, the projection curtain further comprises more than one group of speed increasing gear sets connected between the one-way inner pipe and the throwing piece.

Compared with the prior art, the invention has the following advantages:

(1) according to the one-way friction assembly, when the projection cord fabric is retracted, the rotation direction of the roller shutter tube is the same as the spiral direction of the one-way spring, and the one-way spring is tightened, so that the one-way inner tube is driven to rotate, the one-way inner tube drives the throwing piece to rotate, throwing beads in the throwing piece are thrown out to rub with the throwing piece cavity, and the projection cord fabric is retracted at a constant speed;

(2) according to the unidirectional friction assembly provided by the invention, the gear wheel group is arranged between the unidirectional inner tube and the throwing piece, so that the rotating speed of the throwing piece is increased, the friction resistance is increased, the projection cord fabric is slower to withdraw at a constant speed, and the service life is prolonged;

drawings

The invention will be further illustrated with reference to the following examples with reference to the accompanying drawings:

FIG. 1 is an exploded view of a vehicle-mounted mobile projection screen with a sun-shading function using a one-way friction assembly according to the present invention;

FIG. 2 is a schematic illustration of the embodiment of FIG. 1 showing the relationship of the one-way clutch, the speed increasing gear set and the throw member;

FIG. 3 is an enlarged partial schematic view of A of FIG. 1;

FIG. 4 is a schematic structural view of the slinger in the embodiment of FIG. 1;

FIG. 5 is a cross-sectional view C-C of FIG. 4;

FIG. 6 is a schematic structural view of the left end cap in the embodiment of FIG. 1;

FIG. 7 is a cross-sectional view taken along line D-D of FIG. 6;

FIG. 8 is an enlarged partial schematic view of B of FIG. 1;

FIG. 9 is a schematic view of the right end cap, the separation preventing assembly structure, and the separation preventing locking device in the embodiment of FIG. 1;

FIG. 10 is a schematic structural view of a winding device in the embodiment of FIG. 1;

FIG. 11 is a schematic structural view of the sun visor fixed shaft of the vehicle in the embodiment of FIG. 1;

FIG. 12 is an exploded view of the sliding collar, vacuum attachment and gimbal attachment of the embodiment of FIG. 1;

fig. 13 is a schematic structural view showing a fitting relationship of the telephone number mounting board, the sliding sleeve, the vacuum suction member and the universal joint member in the embodiment of fig. 1.

The symbols in the drawings illustrate that: 1. a sliding hoop sleeve, 2, a vacuum adsorption piece, 3, a universal connecting piece, 31, a main rod piece, 311, a sliding groove, 312, a limiting flange, 313, a bell mouth, 32, a coiled pipe, 33, a U-shaped thread buckle, 34, an adjusting nut, 35 a reducing nut, 36, a coiled pipe hoop sleeve, 4, a fixing shaft of the automobile sun visor, 5, a fixing outer pipe, 51, a left end cover, 511, a throwing piece cavity, 512, a fixing bolt, 513, a pre-tightening operation hole, 52, a right end cover, 6, a middle shaft, 7, a rolling curtain pipe, 8, a projection curtain cloth, 9, a rolling device, 10, a one-way device, 101, a one-way outer pipe, 102, a one-way inner pipe, 103, a one-way spring, 11, a separation-resisting combination structure, 111, a ratchet wheel, 112, a compression rod, 113, a torsion spring, 12, a separation-resisting lock device, 13, a one-way friction component, 131, a throwing piece, 132, a throwing bead groove, 133, 151. digital particles, 152, mounting grooves.

Detailed Description

The invention is described in detail below with reference to the drawings and specific examples:

embodiment (a):

as shown in fig. 1-13, the present invention provides an automobile vehicle-mounted mobile projection curtain with a sun-shading function, which is characterized in that: the projection curtain cloth unwinding device comprises a fixed outer tube 5, a middle shaft 6 coaxially and fixedly arranged in the fixed outer tube 5, a rolling curtain tube 7 movably sleeved on the periphery of the middle shaft 6, a projection curtain cloth 8 with one end wound on the rolling curtain tube 7, a winding device 9 arranged between the middle shaft 6 and the rolling curtain tube 7 and used for enabling the projection curtain cloth 8 to automatically retract, an isolator 10 arranged between the rolling curtain tube 7 and the fixed outer tube 5 and used for achieving a one-way constant-speed effect when the projection curtain cloth 8 is automatically retracted, a separation-preventing combined structure 11 arranged between the rolling curtain tube 7 and the fixed outer tube 5 and used for enabling the projection curtain cloth 8 to be pulled out and suspended, and a separation-preventing lock device 12 arranged between the fixed outer tube 5 and the separation-preventing combined structure 11 and used for removing the one-way separation and separation limit of the projection curtain cloth 8, wherein the isolator 10 comprises a one-way outer tube 101 fixedly connected to the rolling curtain tube 7, a one-way inner tube 102 coaxially sleeved in the, the projection curtain is characterized in that the one-way spring 103 is movably sleeved on the outer peripheral wall of the one-way inner tube 102, one end of the one-way spring 103 is connected with the one-way outer tube 101 to enable the one-way spring 103 and the one-way outer tube 101 not to rotate relatively, the spiral direction of the one-way spring 103 is the same as the rotating direction of the curtain rolling tube 7 when the projection curtain cloth 8 is retracted, so that the one-way outer tube 101 can drive the one-way inner tube 102 to rotate through the one-way spring 103 when the projection curtain cloth 8 is retracted, and the projection curtain further comprises a one-way friction assembly 13 which is connected between the one-way inner tube. In this embodiment, one end of the one-way spring 103 is equipped with the bending rod 105, the outer wall of the isolator outer tube 101 is provided with a spring falling groove 106 along the axial direction, the bending rod 105 is located in the spring falling groove 106, when the projection curtain is withdrawn, the spring falling groove 106 drives the bending rod 105 to rotate along the spiral direction of the elastic one-way spring 103, so that the circumference of the inner circle of the one-way spring 103 is reduced, thereby tightly holding the outer circumference of the one-way inner tube 102, it is realized that the one-way outer tube 101 can drive the one-way inner tube 102 to rotate through the one-way spring 103, when the projection curtain is pulled down, the spring falling groove 106 drives the bending rod 105 to rotate along the spiral opposite direction of the one-way spring 103, the bending rod 105 is pushed away to increase the circumference of the one-way spring 103. In this embodiment, the winding device 9 is a torsion spring.

As shown in fig. 1, 4-7, in order to enable the projection curtain cloth to generate frictional resistance when being retracted, thereby achieving uniform retraction, a left end cap 51 is fixedly disposed on an end surface of the fixed outer tube 5 located at one end of the isolator 10, the one-way friction assembly 13 includes a throwing element 131 connected to and driven by the one-way inner tube 102, more than one throwing bead grooves 132 disposed on the throwing element 131, and throwing beads 133 mounted in each throwing bead groove 132, a throwing element cavity 511 matched with the throwing element 131 is disposed on the left end cap 51, and when the projection curtain cloth 8 is retracted, the throwing beads 133 can be thrown out along the throwing bead grooves 132 and rub with the throwing element cavity 511, thereby generating frictional resistance.

As shown in fig. 1-3, in order to further increase the friction force of the one-way friction assembly, the projection curtain further comprises more than one set of speed-increasing gear sets 14 connected between the one-way inner tube 102 and the throw member 131. The larger the moment released by the winding device 9 is, the faster the rotating speed of the speed increasing gear set 14 is, the larger the frictional resistance between the throwing bead 133 and the inner wall of the throwing cavity 511 is, the torsion released by the winding device 9 can be weakened, the moment released by the winding device 9 is balanced, and the uniform withdrawing of the projection curtain is realized.

As shown in fig. 6 and 7, in order to reduce the assembly difficulty and achieve a preset pre-tightening force of the winding device, and in order to reduce the assembly difficulty and achieve the preset pre-tightening force of the winding device, a middle shaft fixing bolt 512 for fixing the middle shaft 6 is arranged on the left end cover 51, an axis of the middle shaft fixing bolt 512 is perpendicular to an axis of the middle shaft 6, and a pre-tightening operation hole 513 for rotating the middle shaft 6 to pre-tighten the winding device 9 is further arranged on the left end cover 51.

As shown in fig. 8 and 9, in order to enable the projection screen to suspend when the projection screen is pulled out, the other end of the fixed outer tube 5 is fixedly provided with the right end cover 52, the separation-preventing combined structure 11 includes a ratchet 111 coaxially and fixedly arranged on the roller blind tube 7, a pressure lever 112 rotatably connected in the right end cover 52, and a torsion spring 113 arranged in the right end cover 52, the middle of the pressure lever 112 is rotatably connected in the right end cover 52, one end of the pressure lever 112 is provided with a pawl matched with the ratchet 111, and the other end is in a free state, one end of the torsion spring 113 is pressed on the pressure lever 112 so that the pawl presses the ratchet 111, and thus the ratchet 111 can only rotate in one direction when the projection screen 8 is pulled.

As shown in fig. 8 and 9, in order to release the one-way pull-out restriction of the projection curtain, the anti-release lock device 12 includes an anti-release lock button slidably connected to the right end cap 52, the lower end of the anti-release lock button is located above the free end of the press rod 112, and the anti-release lock button can press the free end of the press rod 112 downwards when sliding in the right end cap 52, so that the pawl is disengaged from the ratchet 111 to release the one-way rotation restriction of the ratchet 111.

As shown in fig. 1, in order to better fix the projection curtain, the projection curtain further includes two or more projection curtain fixing devices disposed on the fixed outer tube 5, the projection curtain fixing device includes a sliding collar 1 connected to the projection curtain, a vacuum absorbing member 2 connected between the sliding collar 1 and the front windshield of the automobile, and a universal connecting member 3 connected between the sliding collar 1 and the fixed shaft 4 of the sun visor of the automobile and having an adjustable length and angle, wherein the sliding collar 1 is slidably connected to the outer peripheral wall of the fixed outer tube 5 and can axially slide along the fixed outer tube 5. As shown in fig. 12, the universal joint 3 includes a main rod 31, an angularly adjustable coil 32 connected between the main rod 31 and the sliding band 1, and a U-shaped screw 33 connected between the main rod 31 and the sun visor fixing shaft, the peripheral wall of the main rod piece 31 is provided with two sliding grooves 311 which are distributed along the axial direction of the main rod piece 31 and can be used for two sides of the U-shaped opening of the U-shaped threaded buckle 33 to extend into, the universal connecting piece 3 further comprises an adjusting nut 34 movably sleeved on the outer periphery of the main rod piece 31 and a limiting flange 312 arranged on the outer peripheral wall of the main rod piece 31 and used for limiting the adjusting nut 34 to move axially towards one end of the U-shaped threaded buckle 33, the inner peripheral wall of the adjusting nut 34 is in threaded connection with the outer walls of the two sides of the U-shaped opening of the U-shaped threaded fastener 33, so that the adjusting nut 34 presses the two sides of the U-shaped opening of the U-shaped threaded fastener 33 into the sliding groove 311 of the main rod 31, and the U-shaped threaded fastener 33 can slide on the sliding groove 311 when the adjusting nut 34 is rotated.

As shown in fig. 12, the lower end of the main rod 31 is provided with a bell mouth 313 for the insertion of the coil pipe 32, the universal joint 3 further comprises a coiled pipe clamping sleeve 36 arranged between the coiled pipe 32 and the flare 131, the inner peripheral wall of the serpentine pipe clamping sleeve 36 is matched with the serpentine pipe 32, the outer peripheral wall of the serpentine pipe clamping sleeve 36 is matched with the bell mouth 313, the shape of the outer peripheral wall of the bell mouth 313 is matched with that of the bell mouth 313, the outer peripheral wall of the bell mouth 313 is sleeved with the necking nut 35, the inner peripheral wall of the upper end of the necking nut 35 is in threaded connection with the outer peripheral wall of the main rod 31, the lower end of the serpentine pipe hooping sleeve 36 is provided with a boss matched with the necking nut 35, so that the serpentine pipe hooping sleeve 36 is gradually pushed upwards when the necking nut 35 is screwed, so that the serpentine tube ferrule 36 is fixed to the extending end of the serpentine tube 32, and the other end of the serpentine tube 32 is fixedly connected to the sliding ferrule 1.

As shown in fig. 13, in order to hide the telephone number and display it when necessary, the projection screen further includes a telephone number mounting plate 15 rotatably coupled to the sliding sleeve 1, and the mounting plate 15 is provided with eleven mounting grooves 152 for mounting the digital particles 151.

Embodiment (b):

the vehicle-mounted mobile projection system of the automobile is characterized in that: comprises an automobile-mounted movable projection curtain with a sun-shading function and a micro projector.

The above embodiments are merely to explain the technical solutions of the present invention in detail, and the present invention is not limited to the above embodiments, and any modifications or alterations according to the principles of the present invention should fall within the protection scope of the present invention.

Claims (2)

1. A one-way friction assembly characterized by: including being connected driven with one-way inner tube (102) and getting rid of piece (131), more than one set up get rid of pearl groove (132) on getting rid of piece (131) and install in each get rid of pearl groove (132) get rid of pearl (133), one-way friction subassembly (13) still are equipped with and get rid of piece (131) assorted and get rid of a chamber (511), thereby one-way inner tube (102) get rid of pearl (133) can be thrown away along getting rid of pearl groove (132) and get rid of a chamber (511) looks friction and produce frictional resistance.

2. The one-way friction assembly of claim 1, wherein: the one-way friction assembly (13) also comprises more than one group of speed increasing gear sets (14) connected between the one-way inner pipe (102) and the throwing piece (131).

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