CN2374864Y - Active driving gear of scanner - Google Patents

Abstract

The utility model relates to an active type transmission mechanism of a scanner. An optical module which can be horizontally moved is arranged on a base, a motor is fixed on the optical module, a transmission mechanism is arranged on the optical module, the motor is connected with the transmission mechanism, and the transmission mechanism is fixed on one end of the base along the displacement direction of the optical module. A speed reduction gear cluster and a locking mechanism can be simplified by the utility model, the difficulty of assembling is reduced, and cost is reduced.

Description

The active gear train of a kind of scanister

The utility model relates to the active gear train in scanister field, particularly a kind of scanister.

At present, scanister has become one of basic equipment of many computer users gradually, is equipped with suitable gear train in the scanister commonly used, so that transmission optical module scanning contribution.

The active gear train of existing scanister, as shown in Figure 1, but on pedestal 10a, be provided with optical module (optical block) 11a of a horizontal shift, pedestal 10a one end two lateral walls is provided with advises belt 12a for the moment, be fixed with motor 13a on the optical module 11a, motor 13a by train of reduction gears (figure slightly) with the time rule belts 12a be connected, lean on the driving of motor 13a that optical module 11a is moved horizontally under active state.

The active gear train of above-mentioned scanister is advised belt 12a at that time when assembling, the essential control of doing a strictness of tension force, cause assembling to go up greatly inconvenience, and this gear train need be provided with complicated train of reduction gears and extra locked mechanism, causes production cost higher, does not meet economic benefit.

The utility model purpose just provides the active gear train of a kind of scanister, and it can simplify train of reduction gears and locked mechanism, reduces the assembling difficulty, reduces cost.

The purpose of this utility model is to realize like this, the active gear train of a kind of scanister, pedestal is provided with the optical module that can move horizontally, be fixed with motor on the optical module, optical module is provided with gear train, motor is connected with gear train, and pedestal one end is fixed with gear train along the optical module sense of displacement.

Optical module is provided with worm screw, and motor and worm screw are by gear set or directly be connected, and pedestal one end is fixed with the wrom tooth bar along the optical module sense of displacement, wrom tooth bar and worm mesh.

The wrom tooth bar is arranged on worm screw downside or sorrowful outward.

Optical module is provided with worm screw, and motor and worm screw are by gear set or directly be connected, and pedestal one end is fixed with tooth bar along the optical module sense of displacement, tooth bar and worm mesh.

Tooth bar is located at the worm screw downside or the outside.

Optical module is provided with gear, and motor and gear are by gear set or directly be connected, and pedestal one end is fixed with tooth bar along the optical module sense of displacement, the rack and pinion engagement.

Tooth bar is located at the gear downside or the outside.

Gear is spur gear or spiral gear.

The utility model is owing to utilize the high reduction gear ratio and the unidirectional drive characteristic of worm screw and wrom tooth bar, therefore can reduce the use of gear set and extra locked mechanism, promptly reduce mechanism complexity, guarantee not reduce the transmission accuracy of mechanism again, reduced production, maintenance cost simultaneously, increased economic efficiency; Wrom tooth bar assembling is simple, it is low to require, do not need to the time rule belts assembling make it to reach control requirement to tension force, therefore produce in batches convenient.

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is the stereographic map of the existing active gear train of scanister.

Fig. 2 is the utility model first embodiment stereographic map.

Fig. 3 is the utility model first embodiment partial front elevation view.

Fig. 4 is the utility model first embodiment partial sectional view.

Fig. 5 is the utility model first embodiment gear train side view.

Fig. 6 is the utility model first embodiment gear train front view.

Fig. 7 is the utility model second embodiment gear train front view.

Fig. 8 is the utility model the 3rd embodiment gear train front view.

Fig. 9 is the utility model the 4th embodiment gear train front view.

Figure 10 is the utility model the 5th embodiment gear train side view.

Figure 11 is the utility model the 5th embodiment gear train front view.

Figure 12 is the utility model the 6th embodiment gear train front view.

Figure 13 is that the utility model the 7th is implemented the gear train front view.

Figure 14 is the utility model the 8th embodiment gear train front view.

Motor and worm screw are housed on the scanister optical module, this motor and worm screw are by a gear set or directly be connected, and in the pedestal one end appropriate location of scanister along the fixing wrom tooth bar of optical module sense of displacement, this wrom tooth bar and worm mesh, utilize the motor driven worm screw to rotate, worm screw is moved on the wrom tooth bar, under active state, move horizontally to drive optical module.

As Fig. 2, Fig. 3 and shown in Figure 4, the active gear train of the scanister that the utility model provides, its structure is: but on pedestal 10, be provided with the optical module 11 of a horizontal shift, be fixed with a motor 12 on this optical module 11, be fixed with first gear 13 on the axle center of this motor 12, and on optical module 11, being provided with second gear 14 and worm screw (worm) 15, the first gears 13 and 14 engagements of second bucket wheel, second gear 14 meshes with worm screw 15 again.Motor 12 drives, and by first gear 13,14 transmissions of second gear, worm screw 15 is rotated.Be provided with a wrom tooth bar (worm rack) 16 at worm screw 15 downsides (as Fig. 5 and Fig. 6) or the outside (as Fig. 7), this wrom tooth bar 16 is fixed in an end of pedestal 10, and wrom tooth bar 16 is along optical module 11 sense of displacement settings, and this wrom tooth bar 16 meshes with worm screw 15.Comparatively simple during wrom tooth bar 16 assembling, do not need as prior art to the time rule belt tensions control.In addition, the also available tooth bar of wrom tooth bar 16 (rack) 161 replaces (as Fig. 8 and Fig. 9).

In the utility model, motor 12 drives worm screw 15 and rotates by first gear 13, second gear 14, and worm screw 15 is except passing through first gear 13 and second gear 14 and motor 12 is connected, and worm screw 15 also can directly be connected with motor 12.Utilize worm screw 15 on wrom tooth bar 16 or tooth bar 161, to rotate, under active state, do horizontal shift, scan the action of contribution and drive optical module 11.

The utility model can utilize the high reduction gear ratio and the unidirectional drive characteristic of worm screw 15 and wrom tooth bar 16 (or tooth bar 161), can reduce the use of gear set and the use of extra locked mechanism, to simplify the internal structure of an organization complicacy and can not reduce the precision of mechanism, reduce production, maintenance cost, increase economic efficiency.

In addition, the also available gear 151 of the worm screw 15 in the foregoing description replaces (shown in Figure 10 to the 14 figure), utilizes the height of gear set to slow down when direct and tooth bar 161 engagements, reaches the effect of locking.This gear 151 can be spur gear (spur gear) (as Figure 11 and shown in Figure 12) or spiral gear (helical gear) (as Figure 13 and shown in Figure 14).

Claims (8)

1. active gear train of scanister, pedestal is provided with the optical module that can move horizontally, and is fixed with motor on the optical module, and it is characterized in that: optical module is provided with gear train, motor is connected with gear train, and pedestal one end is fixed with gear train along the optical module sense of displacement.

2. the active gear train of a kind of scanister as claimed in claim 1, it is characterized in that: optical module is provided with worm screw, motor and worm screw are by gear set or directly be connected, and pedestal one end is fixed with the wrom tooth bar along the optical module sense of displacement, wrom tooth bar and worm mesh.

3. the active gear train of a kind of scanister as claimed in claim 2 is characterized in that: the wrom tooth bar is arranged on worm screw downside or sorrowful outward.

4. the active gear train of a kind of scanister as claimed in claim 1, it is characterized in that: optical module is provided with worm screw, motor and worm screw are by gear set or directly be connected, and pedestal one end is fixed with tooth bar along the optical module sense of displacement, tooth bar and worm mesh.

5. the active gear train of a kind of scanister as claimed in claim 4, it is characterized in that: tooth bar is located at the worm screw downside or the outside.

6. the active gear train of a kind of scanister as claimed in claim 1, it is characterized in that: optical module is provided with gear, motor and gear are by gear set or directly be connected, and pedestal one end is fixed with tooth bar along the optical module sense of displacement, the rack and pinion engagement.

7. the active gear train of scanister as claimed in claim 6, it is characterized in that: tooth bar is located at the gear downside or the outside.

8. the active gear train of scanister according to claim 6 is characterized in that: gear is spur gear or spiral gear.

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