CN203733465U - Laser head reading device and roller assembly thereof - Google Patents
Laser head reading device and roller assembly thereof Download PDFInfo
- Publication number
- CN203733465U CN203733465U CN201420066716.7U CN201420066716U CN203733465U CN 203733465 U CN203733465 U CN 203733465U CN 201420066716 U CN201420066716 U CN 201420066716U CN 203733465 U CN203733465 U CN 203733465U
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- CN
- China
- Prior art keywords
- roller
- section
- roller shaft
- shaft
- utility
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a roller assembly of a laser head reading device, which comprises a roller shaft and a plurality of rollers sleeving the roller shaft. Each roller is provided with a first roller section and a second roller section arranged along the axial direction of the roller; interference fit exists between the first roller section and the roller shaft; and clearance fit exists between the second roller section and the roller shaft. As interference fit is adopted between the first roller section and the roller shaft, axial fixation of the roller can be realized; as clearance fit is adopted between the second roller section and the roller shaft, radial distortion can happen to the second roller section relative to the roller shaft under the effect of a disc when the disc is still in a being clamped stage, sliding friction between the roller and the disc can be reduced, and damage on the disc by the roller is further reduced. The utility model also provides a laser head reading device provided with the roller assembly.
Description
Technical field
The utility model relates to disc reading technical field, more particularly, relates to a kind of laser head reading device and roll wheel assembly thereof.
Background technology
The roll wheel assembly of traditional suction-type laser head reading device is by roller shaft and be assemblied in two on roller shaft joint or the above roller of two joints forms.In order to prevent the axial float of roller, generally, whole axial roller all adopts interference fit with roller shaft, but, when video disc is in while being held the stage, because the whole of roller axially all maintains static, thus in the time that contacting with video disc, roller can there is sliding friction between roller and video disc, compared with easy damaged video disc.
In addition,, when the two ends of roller shaft are respectively when sheathed roller, in order to limit the axial float of roller, being everlasting arranges axle sleeve between two rollers and positions, and has increased part number.
In sum, how reducing the sliding friction occurring between roller and video disc, to reduce the damage of pair of rollers video disc, is current those skilled in the art technical matterss urgently to be resolved hurrily.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of roll wheel assembly of laser head reading device, to reduce the sliding friction occurring between roller and video disc, and then the damage of reduction pair of rollers video disc.
Another object of the present utility model is to provide a kind of laser head reading device with roll wheel assembly.
In order to achieve the above object, the utility model provides following technical scheme:
A kind of roll wheel assembly of laser head reading device, comprise roller shaft and be set in the multiple rollers on described roller shaft, described roller all has the first roller section and the second roller section that axially arrange along it, between described the first roller section and described roller shaft, being interference fit, is clearance fit between described the second roller section and described roller shaft.
Preferably, in above-mentioned rollers assembly, described the first roller section is positioned at described the second roller section outside.
Preferably, in above-mentioned rollers assembly, the aperture of described the first roller section is less than the aperture of described the second roller section.
Preferably, in above-mentioned rollers assembly, the length of described the first roller section is 2mm-8mm.
Preferably, in above-mentioned rollers assembly, described roller comprises the left wheel that is arranged on described roller shaft left end and the right roller that is arranged on described roller shaft right-hand member.
Preferably, in above-mentioned rollers assembly, between described left wheel and described right roller, be provided with interval.
Preferably, in above-mentioned rollers assembly, the length of described left wheel and described right roller is 28mm-48mm.
Preferably, in above-mentioned rollers assembly, described roller is rubber roll.
Can find out from above-mentioned technical scheme, the roll wheel assembly of the laser head reading device that the utility model provides comprises roller shaft and is set in the multiple rollers on roller shaft, this roller all has the first roller section and the second roller section that axially arrange along it, between the first roller section and roller shaft, be interference fit, clearance fit between the second roller section and roller shaft.
The utility model makes to adopt interference fit between the first roller section of roller and roller shaft, realized the axial restraint of roller, roller shaft can provide the enough driving force driving video disc to ensure that rugged surroundings bottom roller still can be safe and reliable by the first roller section like this; Make again to adopt clearance fit between the second roller section of roller and roller shaft, so when video disc is still in while being held the stage, under the acting force of video disc, the second roller section can be with respect to roller shaft generation radial distorted, thereby reduce the sliding friction occurring between roller and video disc, and then reduced the damage of pair of rollers video disc.
Meanwhile, the utility model also can utilize roller to be distorted to avoid motor in this stage overload, has met well the reliability of movement.
The utility model also provides a kind of laser head reading device, and it comprises above-mentioned any roll wheel assembly, and because above-mentioned rollers assembly has above-mentioned effect, the laser head reading device with above-mentioned rollers assembly has same effect, therefore repeat no more herein.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the roll wheel assembly of the laser head reading device that provides of the utility model embodiment;
Fig. 2 is the partial structurtes explosive view of the roll wheel assembly of the laser head reading device that provides of the utility model embodiment.
Embodiment
The utility model embodiment provides a kind of roll wheel assembly of laser head reading device, has reduced the sliding friction occurring between roller and video disc, and then has reduced the damage of pair of rollers video disc.
For making object, technical scheme and the advantage of the utility model embodiment clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to accompanying drawing 1-2, the roll wheel assembly of the laser head reading device that the utility model embodiment provides comprises roller shaft 1 and is set in the multiple rollers on roller shaft 1, this roller all has the first roller section and the second roller section that axially arrange along it, between the first roller section and roller shaft 1, be interference fit, clearance fit between the second roller section and roller shaft 1.
The utility model makes to adopt interference fit between the first roller section of roller and roller shaft 1, realized the axial restraint of roller, roller shaft 1 can provide the enough driving force driving video disc to ensure that rugged surroundings bottom roller still can be safe and reliable by the first roller section like this; Make again to adopt clearance fit between the second roller section of roller and roller shaft 1, so when video disc is still in while being held the stage, can there is radial distorted with respect to roller shaft 1 in the second roller section under the acting force of video disc, thereby reduce the sliding friction occurring between roller and video disc, and then reduced the damage of pair of rollers video disc.
Meanwhile, the utility model also can utilize roller to be distorted to avoid motor in this stage overload, has met well the reliability of movement.
In the utility model one specific embodiment, the first roller section is positioned at the second roller section outside.As shown in Figure 2, the utility model makes the roller section that is positioned at outside form the first roller section, and making itself and roller shaft 1 is interference fit; Make the roller section that is positioned at inner side form the second roller section, make itself and roller shaft 1 for transition fit, make so to be finally enclosed within on roller shaft 1 with the friction tight roller section of roller shaft 1, be convenient to the installation of roller.
Preferably, the aperture of the first roller section is less than the aperture of the second roller section.Match, the outside diameter of roller shaft 1 is less than inside diameter, meanwhile, because the outside diameter of roller shaft 1 is less, is convenient to penetrating of roller, has further improved efficiency of assembling.The utility model can limit roller play in axial direction reliably by the difference in roller aperture; Avoid using axle sleeve simultaneously, reduced part, reduced cost.
The length of the first roller section is specially 2mm-8mm.Roller of the present utility model and roller shaft 1 adopt the length of interference fit less, when can ensureing axial location preferably, can also make the length in other regions larger, have strengthened the degree of roller generation radial distorted, have reduced video disc damage.Certainly, the length of above-mentioned the first roller section can also be other numerical value.
As shown in Figure 1-2, roller specifically comprises the left wheel 2 that is arranged on roller shaft 1 left end and the right roller 3 that is arranged on roller shaft 1 right-hand member.Roll wheel assembly of the present utility model comprises the two joint rollers that are symmetricly set on roller shaft 1 two ends, can drive preferably video disc, has ensured functional reliability.Certainly, above-mentioned rollers assembly can also comprise the roller of three joints or other joint numbers.
Between above-mentioned left wheel 2 and right roller 3, be provided with interval.The utility model makes left wheel 2 not contact with right roller 3, has cancelled roller centre and has not worked the part that is written into video disc effect, has shortened roller length, has reduced cost.
In the utility model one specific embodiment, the length of left wheel 2 and right roller 3 is 28mm-48mm.The roller size of this size is shorter, has reduced manufacturing cost, has improved production efficiency.
Roller is further rubber roll.The surperficial smoother of rubber roll, and there is certain elasticity, can reduce the wearing and tearing to video disc.
The utility model also provides a kind of laser head reading device, it comprises the roll wheel assembly that above-mentioned any one embodiment provides, reduce the sliding friction occurring between roller and video disc, and then reduce the damage of pair of rollers video disc, its advantage is brought by roll wheel assembly, concrete please refer to part relevant in above-described embodiment, just repeat no more at this.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. the roll wheel assembly of a laser head reading device, comprise roller shaft (1) and be set in the multiple rollers on described roller shaft (1), it is characterized in that, described roller all has the first roller section and the second roller section that axially arrange along it, between described the first roller section and described roller shaft (1), being interference fit, is clearance fit between described the second roller section and described roller shaft (1).
2. roll wheel assembly as claimed in claim 1, is characterized in that, described the first roller section is positioned at described the second roller section outside.
3. roll wheel assembly as claimed in claim 2, is characterized in that, the aperture of described the first roller section is less than the aperture of described the second roller section.
4. roll wheel assembly as claimed in claim 3, is characterized in that, the length of described the first roller section is 2mm-8mm.
5. roll wheel assembly as claimed in claim 1, is characterized in that, described roller comprises the right roller (3) that is arranged on the left wheel (2) of described roller shaft (1) left end and is arranged on described roller shaft (1) right-hand member.
6. roll wheel assembly as claimed in claim 5, is characterized in that, between described left wheel (2) and described right roller (3), is provided with interval.
7. roll wheel assembly as claimed in claim 6, is characterized in that, the length of described left wheel (2) and described right roller (3) is 28mm-48mm.
8. the roll wheel assembly as described in claim 1-7 any one, is characterized in that, described roller is rubber roll.
9. a laser head reading device, is characterized in that, it comprises the roll wheel assembly as described in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066716.7U CN203733465U (en) | 2014-02-14 | 2014-02-14 | Laser head reading device and roller assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066716.7U CN203733465U (en) | 2014-02-14 | 2014-02-14 | Laser head reading device and roller assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203733465U true CN203733465U (en) | 2014-07-23 |
Family
ID=51203517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420066716.7U Expired - Fee Related CN203733465U (en) | 2014-02-14 | 2014-02-14 | Laser head reading device and roller assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203733465U (en) |
-
2014
- 2014-02-14 CN CN201420066716.7U patent/CN203733465U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20170214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |