CN1119765A - Head cleaning system of a video cassette recorder - Google Patents
Head cleaning system of a video cassette recorder Download PDFInfo
- Publication number
- CN1119765A CN1119765A CN94120702A CN94120702A CN1119765A CN 1119765 A CN1119765 A CN 1119765A CN 94120702 A CN94120702 A CN 94120702A CN 94120702 A CN94120702 A CN 94120702A CN 1119765 A CN1119765 A CN 1119765A
- Authority
- CN
- China
- Prior art keywords
- lever
- cam
- magnetic
- head cleaning
- magnetic drum
- Prior art date
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
- B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
- B60G21/051—Trailing arm twist beam axles
- B60G21/052—Mounting means therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/10—Independent suspensions
- B60G2200/14—Independent suspensions with lateral arms
- B60G2200/142—Independent suspensions with lateral arms with a single lateral arm, e.g. MacPherson type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/10—Independent suspensions
- B60G2200/17—Independent suspensions with a strut contributing to the suspension geometry by being articulated onto the wheel support
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/30—Rigid axle suspensions
- B60G2200/34—Stabilising mechanisms, e.g. for lateral stability
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/13—Torsion spring
- B60G2202/135—Stabiliser bar and/or tube
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
- Ink Jet (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention provides a magnetic head cleaning system for a video recorder, comprising a magnetic head cleaning idler wheel pair which can be arranged on the two branch ends of a lever in a rotatable way; the other end of the lever is a non-branch end; the lever is arranged on a pivot; a sliding pin is assembled on the non-branch end in a rotatable way, which is used for being engaged with an eccentric guide trough on a cam; the guide trough extends to counterclockwise direction radially; when the cam rotates and a video tape is loaded or unloaded, the sliding pin slides along the guide trough and leads to rotation of the lever on the pivot, thus leading each cleaning idler wheel to be contact with the external circumference of a magnetic drum alternatively to clean the magnetic drum.
Description
What the present invention relates to is a kind of video recording head purging system, and more particularly, what relate to is a kind of video recording head purging system that two magnetic heads clean roller that has.
Figure 1A has shown a kind of known video recording head purging system, wherein makes a magnetic head clean roller when video-tape is in the loading or unloading state and contacts with magnetic drum so that clean; Figure 1B has shown the another kind of known video recording head purging system of Fig. 1, and magnetic head cleaning roller and magnetic drum are disengaged.Referring to Figure 1A and 1B, magnetic drum 1 has magnetic head 2 on its external peripheral surface.
Be provided with a pivot 8 between magnetic head cleaning roller 6 and sliding pin 7, the fit of lever 5 makes it can rotate on this pivot 8 when cam 3 rotates.Lever 5 can swing up and down near pivot 8.
When loading and unloading video-tape, shown in Figure 1A, cam 3 rotates with the sun, and along with the rotation of cam 3, sliding pin 7 slides along the guiding groove 3a on the cam 3.Therefore, lever 5 on pivot 8 in the figure direction shown in the arrow A rotate, contact with magnetic drum 1 thereby make magnetic head clean roller 6, so that clean by 6 pairs of magnetic drums 1 of cleaning roller.
In video recorder record or playback procedure, cam 3 is shown in as Figure 1B and rotates on the counter-clockwise direction, and owing to the rotation of cam 3, slip pin 7 is along guiding groove 3a slip, and its direction of motion is opposite with the glide direction shown in Figure 1A.
Therefore, lever 5 rotates towards the direction shown in the arrow B on pivot 8, cleans roller 6 and magnetic drum 1 disengaging thereby make.
Yet, adopt the known magnetic head purging system of said structure to have such shortcoming, promptly in the process of loading or unloading tape, clean owing to have only a cleaning roller 6 and magnetic drum 1 to contact, clean roller 6 and polluted by magnetic drum 1 easily.In addition, if video recorder has used the long time, not only magnetic drum 1 can not be cleaned, can be cleaned roller 6 on the contrary and pollute, therefore can not obtain the required cleaning performance to magnetic drum.
In addition, because the said head purging system only adopts a cleaning roller 6 to clean, it is worn easily, thereby this head cleaning system was lost efficacy.
The purpose of this invention is to provide a kind of video recording head purging system, it can overcome the existing above-mentioned shortcoming of known technology.
For this reason, the head cleaning system of a kind of embodiment of the present invention comprises:
One by motor-driven cam, and it has one at the eccentric guiding groove that extends with counter-clockwise direction in the radial direction;
A lever, it has an overstepping one's bounds fork matches with above-mentioned cam, and with two divergent ends relative with overstepping one's bounds fork, this lever is installed on the pivot, and between above-mentioned cam and magnetic drum;
A joggle piece is used for being meshed with the guiding groove of above-mentioned cam, and this joggle piece is contained on the overstepping one's bounds fork of above-mentioned lever, and can slide along guiding groove, thereby lever is rotated on its pivot;
A pair of magnetic head cleans roller, and they are installed in rotation on respectively on two divergent ends of lever, the rotation direction of lever during according to cam rotation, and above-mentioned two magnetic heads cleaning roller alternately contacts with the external peripheral surface of magnetic drum and cleans.
Because when the loading or unloading video-tape, adopting a pair of magnetic head cleaning roller alternately to contact with magnetic drum cleans, therefore head cleaning system of the present invention can alleviate cleaning the pollution of roller, improvement is to the cleaning performance of magnetic drum, slow down and clean the wearing and tearing that roller is subjected to, therefore can prolong the serviceable life of cleaning roller, and make video recorder obtain image clearly.
By below in conjunction with the detailed description that accompanying drawing carried out, can clearly reflect other purpose of the present invention and characteristics.
Figure 1A has shown a kind of known video recording head purging system, and wherein when the loading or unloading video-tape, a magnetic head cleaning roller contacts with magnetic drum and cleans;
Figure 1B and Figure 1A are similar, and different is in the record of video recorder or playback procedure, and magnetic head cleans roller and magnetic drum disengages;
Fig. 2 A is the schematic diagram according to the video recording head purging system of an embodiment of the present invention, and wherein when loading video-tape, first magnetic head cleaning roller contacts with magnetic drum and cleans;
Fig. 2 B and Fig. 2 A are similar, and different is when unloading video-tape, and second magnetic head cleaning roller contacts with magnetic drum and cleans;
Fig. 2 C is similar to Fig. 2 A, and different is in the record or replay operations process of video recorder, and first and second clean roller all disengages with magnetic drum.
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described in detail.
Fig. 2 A～2C has shown embodiments of the invention, and wherein identical with Figure 1A and 1B parts adopt identical Reference numeral to represent, have omitted in the following description the wherein detailed description of most of parts.
In this embodiment, lever 15 is roughly Y-shaped, and the one end is the overstepping one's bounds fork that matches with cam 3, and the other end relative with overstepping one's bounds fork has a pair of divergent ends.Overstepping one's bounds fork at lever 15 is equipped with the sliding pin 7 that can rotate, and the guiding groove 3a of this pin and cam 3 is meshed, as joggle piece.According to the rotation direction of cam 3, above-mentioned sliding pin 7 can slide in the clockwise direction or on the counter-clockwise direction along guiding groove 3a.First and second magnetic heads clean roller 6 and 16 and are installed in respectively on each divergent ends of lever 15 in the mode that can rotate.Between first magnetic head cleaning roller 6 and sliding pin 7, be provided with a pivot 8.Lever 15 is installed on the above-mentioned pivot 8, enables to rotate along with the rotation of cam 3, and lever 15 can be swung up and down near pivot 8.The mounting means that first and second magnetic heads clean roller should make when cam 3 rotates, and these two magnetic heads cleaning rollers can alternately contact with the external peripheral surface of magnetic drum 1 along with the rotation of lever 15.
To introduce the mode of operation of the head cleaning system of most preferred embodiment of the present invention below.
Shown in Fig. 2 A, when loading video-tape, cam 3 rotates in the clockwise direction, and sliding pin 7 slides along guiding groove 3a.Like this, lever 15 rotates on the direction shown in the arrow C in the figure on pivot 8, makes first magnetic head clean roller 6 and contacts with magnetic drum 1, and magnetic drum is cleaned.Meanwhile, second magnetic head cleaning roller 16 disengages with magnetic drum.
When unloading video-tape, shown in Fig. 2 B, cam 3 rotates on counter-clockwise direction, and sliding pin 7 is rotated with the direction opposite with Fig. 2 A along guiding groove 3a.Like this, lever 15 rotates on the direction shown in the arrow D in the figure on pivot 8, makes second magnetic head clean roller 16 and contacts with magnetic drum 1, and magnetic drum 1 is cleaned.Meanwhile, first magnetic head cleaning roller 6 disengages with magnetic drum 1.
In the video recording or playback procedure of video recorder, shown in Fig. 2 C, first and second magnetic heads clean roller and magnetic drum disengages.
As mentioned above, because head cleaning system of the present invention has adopted two magnetic heads to clean roller, they contact with the mode that replaces and magnetic drum and clean, and therefore just can avoid magnetic drum to be subjected to the pollution of magnetic head cleaning roller, thereby magnetic drum is carried out desirable cleaning.In addition, also alleviated and cleaned the wearing and tearing that roller is subjected to, therefore prolonged the serviceable life of cleaning roller, made video recorder obtain image clearly.
Only be in conjunction with the accompanying drawings a kind of embodiment of the present invention to be had been described in detail above, should be noted that the present invention is not limited to the foregoing description, within the scope of claim, also can make many variations and improvement the present invention.For example, as described in top embodiment, when loading video-tape, the first cleaning roller is contacted with magnetic drum, when unloading video-tape, the second cleaning roller is contacted with magnetic drum; Yet also can design purging system like this, make when loading video-tape, second cleans roller contacts with magnetic drum, and when the unloading video-tape, first cleans roller contacts with magnetic drum.
In addition, also can make lever have divergent ends more than 3, and on each divergent ends, load onto one and clean roller, so that contact with magnetic drum successively along with the rotation of lever makes each clean roller.
Claims (5)
1, a kind of video recording head purging system is characterized in that comprising:
A cam that is driven by motor has eccentric guiding groove on it, this guiding groove is extending with counter-clockwise direction in the radial direction;
A lever has an overstepping one's bounds fork that closes with above-mentioned cam meshing and two divergent ends relative with overstepping one's bounds fork, and this lever is installed on the pivot, between above-mentioned cam and magnetic drum;
One be used for cam on the joggle piece that is meshed of guiding groove, this joggle piece is assemblied on the overstepping one's bounds fork of lever, and slides and drive lever and rotate on pivot along guiding groove when cam rotation;
A pair of magnetic head cleans roller, is installed on two divergent ends of lever in the mode that can rotate respectively, and contacts with the mode that replaces and the external peripheral surface of magnetic drum along with the rotation of lever when cam rotates.
2, head cleaning system as claimed in claim 1 is characterized in that described lever is roughly Y-shaped.
3, head cleaning system as claimed in claim 1 is characterized in that described joggle piece is a sliding pin.
4, head cleaning system as claimed in claim 3 is characterized in that described sliding pin is installed on the overstepping one's bounds fork of lever in the mode that can rotate.
5, head cleaning system as claimed in claim 2 is characterized in that described lever can swing up and down near pivot.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019930027811A KR950017280A (en) | 1993-12-15 | 1993-12-15 | Suspension of automobile |
| KR93-27811 | 1993-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1119765A true CN1119765A (en) | 1996-04-03 |
Family
ID=19371050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94120702A Pending CN1119765A (en) | 1993-12-15 | 1994-12-15 | Head cleaning system of a video cassette recorder |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2877707B2 (en) |
| KR (1) | KR950017280A (en) |
| CN (1) | CN1119765A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006155683A (en) * | 2004-11-25 | 2006-06-15 | Mitsumi Electric Co Ltd | Recording/reproducing device |
-
1993
- 1993-12-15 KR KR1019930027811A patent/KR950017280A/en not_active Application Discontinuation
-
1994
- 1994-12-13 JP JP6309323A patent/JP2877707B2/en not_active Expired - Lifetime
- 1994-12-15 CN CN94120702A patent/CN1119765A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0817025A (en) | 1996-01-19 |
| JP2877707B2 (en) | 1999-03-31 |
| KR950017280A (en) | 1995-07-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |