CN2775738Y - Multiple axial moving roller module - Google Patents

Abstract

The utility model relates to a multi-axial movable roller assembly, which comprises a roller, a shaft lever and a load bearing assembly, wherein the shaft lever penetrates in a hole of a roller shaft of the roller to form a rotational coupling relationship; one end of the shaft lever is connected with a coder; the roller can drive the shaft lever to roll forwards and backwards to cause the coder to output a first signal; the roller and the shaft lever can use the coder as a fulcrum to carry out pivoting displacement in the load bearing assembly; a second signal is generated by touching a first microswitch; the load bearing assembly is pivoted on a bottom board by a pivot part and can carry out swing corresponding to the bottom board; at least a third signal is generated by touching a second microswitch or a third microswitch. Based on the structure and compared with the prior art, the multi-axial movable roller assembly of the utility model has the advantages of simple structure, low cost and easy operation.

Description

Many axially movable roll wheel assemblies

Technical field

The utility model relates to the input media of computer peripheral equipment, particularly relates to a kind of how axially movable roll wheel assembly, in order to produce the input signal of upper and lower, left and right.If when it is applied to computer input unit, the image in the computer screen that then can roll.

Background technology

Along with computer operating system and application program adopt graphical interface (GUI) widely, the cursor input media becomes a kind of important input media.The cursor input media moves the cursor on screen in order to produce a movable signal, cooperates the use of button, can carry out program implementation apace or closes.

When handling large-scale lteral data, computer-aided design (CAD) drawing or browsing page, its data volume that contains surpasses computer screen institute energy data presented amount, computer screen is the data area of display part only, watch the data field at other position, must spur with the scroll bar (scroll bar) of cursor point bit selecting, with the image modification viewing area on the roll screen in graphical window side and base.Upper and lower the moving of scroll bar that pulling is positioned at the window side can make the upper and lower rolling of computer screen image, when pulling is positioned at the scroll bar move left and right on window base, then can make the left and right rolling of image.

This screen picture roll mode, mode of operation need continuous moving cursor with the pulling scroll bar, therefore existing input media such as mouse, trace ball etc. all possess a roller, to rotate before and after the finger push roller, can produce the signal of upper and lower rolling, just it is upper and lower mobile not need constantly to spur scroll box thus, reduce the travel frequency of cursor input, but in addition roller also pressurized produce one and switch signal, as extra button.Relevant technology can be consulted the application of United States Patent (USP) bulletin 5530455.

Yet roller commonly used has only solved the problem of the upper and lower rolling of image, and is still unresolved for the left and right rolling of horizontal direction, and the mode that still must rely on the pulling scroll bar is come left and right rolling image.For this problem, the application of U.S. Patent Publication US20030025673 and US20040174336 has proposed a kind of tilting or the mode of shifting roller, to export left and right roll signal.Therefore as long as the forward and backward rotation roller and the roller that tilts, the image on the screen can be carried out upper and lower rolling and about roll.

The open application of US20030025673 is for detecting the action of the forward and backward rotation of roller, it must be provided with an optical encoder in roller inside, make roller structure become complicated, increases the difficulty when producing, and in order to hold optical encoder, therefore the volume of roller also can strengthen.In addition, US20040025673 applies for a ball joint (ball joint) in conjunction with roller and axostylus axostyle, make roller except can forward and backward rotation and drive this spindle rotation, also can be left and right tilt, this roller is positioned over one simultaneously and tilts to wave in the seat (tilt biasing system), by the left and right tilting action of roller, drives this inclination simultaneously and waves seat and tilt, utilize a scrambler to detect the vergence direction that seat is waved in this inclination, to produce the signal of left and right rolling image.

Wherein, the forward and backward side that the open application of US20040025673 is waved seat in this inclination is provided with pin joint seat, and its integrally-built length is increased, and therefore has more restriction on spatial configuration.In addition, the open application of US20040025673 utilizes a scrambler to detect the vergence direction that seat is waved in this inclination, when this inclination swing seat does not tilt in the neutral position, needs this scrambler location of making zero, its control setting program complexity has also improved the cost that assembly is provided with simultaneously.

The utility model content

Known roll wheel assembly complex structure in view of the above, cost are than problems such as height, and fundamental purpose of the present utility model is to provide a kind of how axially movable roll wheel assembly simple in structure, with low cost.

Therefore, for achieving the above object, the utility model discloses a kind of how axially movable roll wheel assembly, and it includes a roller, an axostylus axostyle and a bearing assembly.Wherein place this axostylus axostyle on this roller, and an end of this axostylus axostyle and a scrambler join, this roller can drive the forward and backward rolling of this axostylus axostyle, makes this scrambler export one first signal; This roller and this axostylus axostyle can be fulcrum with this scrambler, carry out pivotal displacement in this bearing assembly, produce a secondary signal by touching one first microswitch; This bearing assembly is hubbed on the base plate by an articulated section, and this bearing assembly this base plate is relatively swung, by touching one second microswitch or one the 3rd microswitch produces at least one the 3rd signal.

Wherein, this roller has a roller axis hole, and the cross sectional shape of this roller axis hole is a polygon.Wherein, the outside surface of this roller bearing and this roller shaft hole inner wall form a gap, wave so that this roller is had a down dip at the state of not interfering this axostylus axostyle, tilt to drive this bearing assembly.One end of this axostylus axostyle is inserted in a scrambler, so that detect the rotation of this roller, the other end is suspended on one first microswitch, and this roller can be oppressed this axostylus axostyle and be made it flexural deformation to touch this first microswitch.The both sides of this bearing assembly are respectively equipped with one second and one the 3rd microswitch, and this roller can tilt and drive this bearing assembly inclination, to touch this second microswitch or the 3rd microswitch.

Particularly, this axostylus axostyle forms one in regular turn by one end to the other end and plugs portion, a pivoting part and a circular shaft part, this cross sectional shape that plugs portion and this pivoting part is a polygon, and the cross-sectional area of this pivoting part is slightly less than the cross-sectional area of this roller axis hole, this axostylus axostyle is placed through in this roller axis hole, this portion of plugging is inserted in the scrambler, and this pivoting part is corresponding to this roller axis hole, this circular shaft part is suspended in one first microswitch top, so that this portion of plugging can be coupled mutually with this scrambler, utilize this scrambler to detect the rotary state of this axostylus axostyle; Can form with this pivoting part when this roller rotates and rotate coupled relation, rotate and drive this rotating shaft, and this roller can wave with respect to this axostylus axostyle straight line slippage or inclination and not interfere this axostylus axostyle, then can make this axostylus axostyle flexural deformation when this roller pressurized is downward, so that this circular shaft part touches this first microswitch.This bearing assembly is hubbed on the base plate, can tilt with respect to this base plate and wave, this bearing assembly has two sidewalls parallel to each other, form a storage tank between described two sidewalls, this roller places this storage tank, and this axostylus axostyle is suspended on this bearing assembly, makes between this axostylus axostyle and this bearing assembly not possess contact relation.When this roller tilts, can drive this bearing assembly simultaneously and vacillate now to the left, now to the right, so that utilize this bearing assembly to press to be positioned at second, third microswitch of these bearing assembly both sides.

By above-mentioned combination, this roller is rotated to drive this axostylus axostyle in front and back, and this scrambler can detect the rotation direction and the amount of spin of this axostylus axostyle, to produce one first signal.Depress this roller, can make this circular shaft part touch this first microswitch,, make this roller possess keypress function to produce a secondary signal.This roller of left and right inclination can drive this bearing assembly and press this second microswitch or the 3rd microswitch, so that produce one the 3rd signal.Should can be arranged within the cursor input media by how axially movable roll wheel assembly, this roller is exposed for operation, also can be arranged at keyboard, handwritten numeral plate, joystick even directly be arranged on the portable electronic apparatus, so that variation, operator scheme fast to be provided.

Based on said structure, it is not only simple in structure that how axially movable roll wheel assembly of the present utility model is compared known technology, with low cost and ten minutes easy operating.

About feature of the present utility model and operation, existing conjunction with figs. is described in detail as follows preferred embodiment.

Description of drawings

Fig. 1 is the exploded perspective view of the utility model first preferred embodiment;

Fig. 2 is the side view of the partial component-roller of first preferred embodiment;

Fig. 3 is the stereographic map of first preferred embodiment;

Fig. 4 A, 4B have disclosed the application synoptic diagram that rotates before and after the roller of first preferred embodiment;

Fig. 5 A, 5B have disclosed the downward application synoptic diagram of roller pressurized of first preferred embodiment;

Fig. 6 A, 6B and 6C have disclosed the application synoptic diagram that the roller of first preferred embodiment is promoted by external force left;

Fig. 7 A, 7B and 7C have disclosed the application synoptic diagram that the roller of first preferred embodiment is promoted by external force to the right;

Fig. 8,9 is the application synoptic diagram that first preferred embodiment is applied to a cursor input media;

Figure 10 is the exploded perspective view of the utility model second preferred embodiment; And

Figure 11 A, 11B are the application synoptic diagram that the roller of second preferred embodiment is promoted by external force.

Wherein, description of reference numerals is as follows:

Axially movable roll wheel assembly 11 rollers 111 protrude axle more than 10

112 roller axis holes, 12 axostylus axostyles 121 plug portion

122 pivoting parts, 123 circular shaft parts, 13 bearing assemblies

131 sidewalls, 132 storage tanks, 133 concane gaps

134 supports, 135 drive-connecting shafts, 136 press sections

14 circuit boards, 141 openings, 15 base plates

151 supporting components, 152 pin joint seats, 153 pivoted holes

21 first microswitches, 22 second microswitches 23 the 3rd microswitch

24 scramblers, 241 coupling apertures, 30 cursor input medias

31 housings 32 expose hole 40 main frames

50 computer screens more than 60 axially movable roll wheel assemblies

61 rollers 611 protrude axle 612 roller axis holes

62 axostylus axostyles 621 plug portion's 622 pivoting parts

623 circular shaft parts, 63 bearing assemblies, 631 sidewalls

632 storage tanks, 633 concane gaps, 634 supports

635 drive-connecting shafts, 64 circuit boards, 641 openings

65 base plates, 651 supporting components, 71 first microswitches

72 second microswitches 73 the 3rd microswitch, 74 scramblers

Embodiment

Consult Fig. 1 to shown in Figure 3, it is respectively three-dimensional exploded view, partial component side view and the stereoscopic figure of a kind of how axially movable roll wheel assembly 10 that the utility model one preferred embodiment provided, should how axially movable roll wheel assembly 10 include a roller 11, an axostylus axostyle 12 and a bearing assembly 13, a circuit board 14 and a base plate 15 (when being applied to computer input unit, being generally the lower house of this input media).

The center of this roller 11 has an outstanding vertically protrusion axle 111, and the center of this protrusion axle 111 is formed with the roller axis hole 112 that front and back connect, and the cross section of this roller axis hole 112 presents polygonal shape.

This axostylus axostyle 12 forms one in regular turn by one end to the other end and plugs portion 121, pivoting part 122 and a circular shaft part 123, wherein this plugs the cross-sectional area of the cross-sectional area of portion 121 less than this pivoting part 122, and the cross-sectional area of this pivoting part 122 is less than the cross-sectional area of this circular shaft part 123.This circular shaft part 123 is rendered as right cylinder, its cross section is circular, this cross section that plugs portion 121 and this pivoting part 122 all is rendered as polygon, and the cross-sectional area of this pivoting part 122 is slightly less than this roller axis hole 112, this axostylus axostyle 12 is placed through this roller axis hole 112, and makes this pivoting part 122 corresponding to this roller axis hole 112.Because the cross-sectional area of this pivoting part 122 is slightly less than this roller axis hole 112, make between the inwall of the outside surface of this pivoting part 122 and this roller axis hole 112 and form the gap, when this roller 11 rotated, this roller 11 can form with this axostylus axostyle 12 and rotate coupled relation to drive this axostylus axostyle 12 rotations.Because this roller 11 this axostylus axostyle 12 relatively forms rotatable relationship, and does not interfere this axostylus axostyle 12, makes this roller 11 can carry out the tilting action of a predetermined angular, does not tilt or displacement and do not drive this axostylus axostyle 12.In addition, when this roller 11 be subjected to external force pressure and produce perpendicular to the central shaft of this axostylus axostyle 12 to straight-line displacement the time, this roller 11 can be oppressed this axostylus axostyle 12 and be made this axostylus axostyle 12 flexural deformations.

This bearing assembly 13 has two relative sidewalls 131, forms a storage tank 132 between these two sidewalls 131, and a concane gap 133 is formed respectively on the top of these two sidewalls 131.The bottom of this bearing assembly 13 has two supports 134, and these two supports 134 have a drive-connecting shaft 135 respectively, towards forward and backward side's extension of this bearing assembly 13.This bearing assembly 13 also has two press sections 136, and it lays respectively at the outside of these two sidewalls 131, and two press sections 136 are the long slab sheet, extends along the direction perpendicular to two sidewalls 131.Be formed with a plurality of fins that link to each other with each sidewall 131 on each press section 136, so that strengthen the rigidity of each press section 136.

This circuit board 14 has an opening 141, is provided with one first microswitch 21, one second microswitch 22, one the 3rd microswitch 23 and a scrambler 24 around this opening 141.This scrambler 24 and this first microswitch 21 are located at the relative both sides of this opening 141 respectively, form state in correspondence with each other.Wherein this scrambler 24 is a rotary encoder (ROTARY ENCODER), for example can be a kind of optics or contact type scrambler; Scrambler 24 in the present embodiment has a coupling aperture 241, the cross sectional shape of this coupling aperture 241 is a polygon, match each other with the portion that plugs 121 of this axostylus axostyle 12, this plugs portion 121 and can be inserted among this coupling aperture 241, make this axostylus axostyle 12 and this scrambler 24 form coupled relation, this scrambler 24 can detect the rotation direction and the amount of spin of this axostylus axostyle 12.This second microswitch 22 and the 3rd microswitch 23 also uprightly are arranged at the relative both sides of this opening 141 respectively, form state in correspondence with each other.

Be formed with a plurality of supporting components 151 and two pin joint seats 152 on this base plate 15, each supporting component 151 presents the plate shape, erectly place on this base plate 15, two pin joint seats 152 are two plates parallel to each other, has a pivoted hole 153 respectively, two pivoted holes 153 are positioned on the same axis, with corresponding to two drive-connecting shafts 135.

The above is the modular construction of this how axially movable roll wheel assembly 10, below will further specify the annexation of each assembly and the mode of operation of present embodiment.

This circuit board 14 places the top of this base plate 15, and be resisted against the top of each supporting component 151, make this opening 141 be positioned at the top of two pin joint seats 152, and pass through the interval action of each supporting component 151, make and form a spacing distance between this circuit board 14 and this base plate 15.

This bearing assembly 13 places the top of this circuit board 14, corresponding to this opening 141, two supports 134 pass this opening 141, and two drive-connecting shafts 135 are inserted in the pivoted hole 153 of two pin joint seats 152 respectively, make two supports 134 be articulated in two pin joint seats 152, so that this bearing assembly 13 is hubbed on this base plate 15, make this bearing assembly 13 relatively this base plate 15 and this circuit board 14 pivot and tilt, swing.The press section 136 of this bearing assembly 13 is respectively to should second microswitch 22 and the 3rd microswitch 23, when these bearing assembly 13 swings are tilted, can drive two press sections 136 and reach up respectively and move down, in order to compress this second microswitch 22 or the 3rd microswitch 23.

This roller 11 places this storage tank 132, two concane gaps 133 are passed at the two ends of this axostylus axostyle 12 respectively, and be stretched on outside this storage tank 132, form the gap between the top of this axostylus axostyle 12 and two sidewalls 131, make between this axostylus axostyle 12 and this bearing assembly 13 not possess contact relation.This plugs portion 121 and is coupled mutually with this scrambler 24, and 123 of this circular shaft parts are suspended in the top of this first microswitch 21 corresponding to this first microswitch 21.

Please consult again shown in Fig. 4 A and Fig. 4 B, before and after this roller 11 is subjected to, pass and when rotating, this roller 11 can form the coupled relation of axial rotary with this pivoting part 122, rotates and drive this axostylus axostyle 12.This scrambler 24 can plug velocity of rotation and the rotation direction that portion 121 records this axostylus axostyle 12 and this roller 11 by this, exports one first signal, and image can vertically roll.

Consult shown in Fig. 5 A and Fig. 5 B, when this roller 11 bears one during towards the pressure of this base plate 15, this axostylus axostyle 12 in the concane gap 133 of bearing assembly 13 can be subjected to pushing of this roller 11, and be fulcrum with this scrambler 24, produce flexural deformation or pivotal displacement downwards, and force this circular shaft part 123 to touch this first microswitch 21 downwards, export a secondary signal.This unique design, than the designs simplification of US20030025673 and two applications of US20040174336 many, and can reduce the assembling and the production cost of roll wheel assembly effectively.

Consult shown in Fig. 6 A, Fig. 6 B and Fig. 6 C, it is subjected to producing the state that tilts with respect to this axostylus axostyle 12 along the thrust of axial rotary for this roller 11.When a present dynasty left side promoted this roller 11, this roller 11 can tilt towards left, because the cross section of this roller axis hole 112 is a bit larger tham the cross section of this pivoting part 122, so this roller 11 can tilt under the state of not interfering this axostylus axostyle 12.After this roller 11 is tilted to the left, can forces this bearing assembly 13 to be tilted to the left and wave, the press section 136 that is arranged in the figure left is moved down, touch this second microswitch 22, produce one the 3rd signal, image laterally rolls left.

Consult shown in Fig. 7 A, Fig. 7 B and Fig. 7 C, this roller 11 can be towards the state of right-hand inclination when it was present dynasty's this roller 11 of right promotion.After this roller 11 is tilted to the right, can forces this bearing assembly 13 to be tilted to the right and wave, the press section 136 that is positioned at the right side is moved down, touch the 3rd microswitch 23, produce one the 3rd signal, image laterally rolls to the right.

The utility model can be applicable to cursor input media such as mouse, trace ball etc., also can be additional on keyboard, digital handwriting pad or joystick computer peripheral devices such as (game pad).See also Fig. 8 and shown in Figure 9, it is for using cursor input media 30 of the present utility model, this cursor input media 30 is connected in a main frame 40, move and picture roll with the cursor of controlling on the computer screen 50, this cursor input media 30 includes a housing 31, these housing 31 surfaces offer one and expose hole 32, and this how axially movable roll wheel assembly 10 is placed in this housing 31 inside, and make this roller 11 expose hole 32 parts via this to expose to outside this housing 31.The user can directly move this cursor input media 30 to move the cursor on this computer screen 50, then can promote this roller 11 when desire rolling image.When this roller 11 is rotated in front and back, produce this first signal, image is moved up and down along the Y-axis on this computer screen 50, when tilting this roller 11, produce the 3rd signal, image is rolled, so that reduce the frequency that moves this cursor input media 30 along about the X-axis of this computer screen 50.This roller 11 is direct pressurized also, makes the circular shaft part 123 of this axostylus axostyle 12 touch this first microswitch 21, produces this secondary signal, makes this roller 11 as the extra button that is provided with.

In the utility model, this bearing assembly also can change the configuration direction of microswitch except the press section that can utilize along continuous straight runs to extend towards both sides presses the microswitch, presses microswitch with the side of bearing assembly.

Please consult again shown in Figure 10, a kind of how axially movable roll wheel assembly 60 that it is provided for the utility model second preferred embodiment, it includes a roller 61, an axostylus axostyle 62, a bearing assembly 63, a circuit board 64 and a base plate 65.

The center of this roller 61 has an outstanding vertically protrusion axle 611, and the center of this protrusion axle 611 is formed with the roller axis hole 612 that front and back connect.

This axostylus axostyle 62 forms one in regular turn and plugs portion 621, pivoting part 622 and a circular shaft part 623, wherein this circular shaft part 623 is rendered as right cylinder, its cross section is circular, this cross section that plugs portion 621 and this pivoting part 622 all is rendered as polygon, and the cross-sectional area of this pivoting part 622 is slightly less than this roller axis hole 612.

This bearing assembly 63 has two relative sidewalls 631, and a concane gap 633 is formed respectively on the top that forms 632, two sidewalls 631 of a storage tank between these two sidewalls 631.The bottom of this bearing assembly 63 has two supports 634, and these two supports 634 have a drive-connecting shaft 635 respectively, towards forward and backward side's extension of this bearing assembly 13.

This circuit board 64 has an opening 641, is provided with one first microswitch 71, one second microswitch 72, one the 3rd microswitch 73 and a scrambler 74 around this opening 641.This scrambler 74 and this first microswitch 71 are located at the relative both sides of this opening 641 respectively, form state in correspondence with each other, wherein the portion that plugs 621 of axostylus axostyle 62 can be inserted in this scrambler 74, make this scrambler 74 and this axostylus axostyle 62 form coupled relation, in order to rotation direction and the amount of spin that detects this axostylus axostyle 62.This second microswitch 72 and the 3rd microswitch 73 also are located at the relative both sides of this opening 741 respectively, and this second microswitch 72, the 3rd microswitch 73 are for laterally furnishing on this circuit board 64, the state that formation faces one another, and can press second, third microswitch 72,73 by horizontal direction.

Be formed with a plurality of supporting components 651 and two pin joint seats 652 on this base plate 65, each supporting component 651 is rendered as the plate shape, two pin joint seats 652 are two plates parallel to each other, has a pivoted hole 653 respectively, two pivoted holes 653 are positioned on the same axis, with corresponding to two drive-connecting shafts 635.

This circuit board 64 is positioned over the top of this base plate 65, makes this opening 641 corresponding to two pin joint seats 652, and passes through the interval action of each supporting component 651, makes and forms a spacing distance between this circuit board 64 and this base plate 65.

This bearing assembly 63 places opening 641 tops of this circuit board 64, make two supports 634 pass this opening 641, and be articulated in two pin joint seats 652, so that this bearing assembly 63 is articulated on this base plate 65, this bearing assembly 63 can be swung with respect to this base plate 65 and this circuit board 64 pivots.

This bearing assembly 63 makes two sidewalls 631 correspond respectively to this second microswitch 22 and the 3rd microswitch 23 between this second microswitch 22 and the 3rd microswitch 23.When these bearing assembly 63 swings are tilted, can compress this second microswitch 72 or the 3rd microswitch 73 with two sidewalls 631 respectively.

This roller 61 places this storage tank 632, two concane gaps 633 are passed at the two ends of this axostylus axostyle 62 respectively, and be stretched on outside this storage tank 632, form the gap between the top of this axostylus axostyle 62 and two sidewalls 631, make between this axostylus axostyle 62 and this bearing assembly 63 not possess contact relation.This plugs portion 621 and is inserted in this scrambler 74, this axostylus axostyle 62 is coupled, to detect the rotation of this axostylus axostyle 62 mutually with this scrambler 74.623 of this circular shaft parts are corresponding to this first microswitch 71, be suspended in the top of this first microswitch 71, when being subjected to pushing with this roller 61 of box lunch, can make this axostylus axostyle 62 is fulcrum with this scrambler 74, produce flexural deformation or pivotal displacement downwards, so that utilize this circular shaft part 123 to touch this first microswitch 71.

Please consult shown in Figure 11 A and Figure 11 B, it tilts to wave to touch this second microswitch 72 or the view of the 3rd microswitch 73 for this bearing assembly 63 again.When promoting this roller 61 to the right, this roller 61 can be towards right-hand inclination and slippage, drive this bearing assembly 63 simultaneously towards right-hand inclination, be positioned at these bearing assembly 63 right-hand sidewalls 631 and can touch the 3rd microswitch 73 this moment, to produce a signal that laterally rolls to the right.When promoting this roller 61 left, this roller 61 can tilt and slippage towards left, drives this bearing assembly 63 simultaneously and tilts towards left, so that utilize the sidewall that is positioned at left to touch this second microswitch 72, to form a signal that laterally rolls left.

Though the utility model discloses as above with aforesaid preferred embodiment; but it is not in order to limit the utility model; those skilled in the art is not in breaking away from spirit and scope of the present utility model; can do multiple change and retouching, therefore protection domain of the present utility model should be as the criterion with the scope that claim was defined.

Claims (8)

1. axially movable roll wheel assembly more than a kind is characterized in that, comprising:

One bearing assembly, an axostylus axostyle and are located at the roller in this bearing assembly;

Wherein place this axostylus axostyle on this roller, and an end of this axostylus axostyle and a scrambler join, this roller can drive the forward and backward rolling of this axostylus axostyle, makes this scrambler export one first signal;

This roller and this axostylus axostyle can be fulcrum with this scrambler, carry out pivotal displacement in this bearing assembly, produce a secondary signal by touching one first microswitch;

This bearing assembly is hubbed on the base plate by an articulated section, and this bearing assembly this base plate is relatively swung, by touching one second microswitch or one the 3rd microswitch produces at least one the 3rd signal.

2. as claimed in claim 1 how axially movable roll wheel assembly is characterized in that, also is provided with a circuit board on this base plate, and this scrambler is arranged on this circuit board.

3. as claimed in claim 1 how axially movable roll wheel assembly is characterized in that, this first microswitch is arranged on a side of this axostylus axostyle; And described second and third microswitch is separately positioned on the both sides of this bearing assembly.

4. as claimed in claim 3 how axially movable roll wheel assembly is characterized in that this base plate is provided with a circuit board, and described first microswitch, second microswitch and the 3rd microswitch are arranged on this circuit board.

5. as claimed in claim 3 how axially movable roll wheel assembly is characterized in that, this bearing assembly is extended with two press sections, and described two press sections can be touched described second and third microswitch respectively.

6. as claimed in claim 4 how axially movable roll wheel assembly is characterized in that, this roller and this bearing assembly are located among the opening of this circuit board.

7. as claimed in claim 1 how axially movable roll wheel assembly is characterized in that, this bearing assembly has two concane gaps, and this turning rolls is located between described two concane gaps.

8. as claimed in claim 1 how axially movable roll wheel assembly, it is characterized in that, this roller has a roller axis hole, this axostylus axostyle has a pivoting part, this pivoting part places this roller axis hole, the cross sectional shape of this roller axis hole and this pivoting part is a polygon, and the cross-sectional area of this pivoting part is less than the cross-sectional area of this roller axis hole.

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