• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    SUMMARY The invention relates to a cleaning system 10 at a vehicle headlight, where the cleaning system comprises at least one tank 11, and a main line 12 in its first end connected to the tank 11 and in its second end connected to a coupling unit 13. Furthermore, a coupling unit 13 is connected to the coupling unit 13. first nozzle conduit 14A including a first nozzle 16A having at least one first nozzle opening 15A, and a second nozzle conduit 14B including a second nozzle 16B having at least one second nozzle opening 15B. In addition, in connection with the first dude of the main line 12, there is a pump 17 adapted to pump cleaning fluid from the tank 11 through the main line 12 and the nozzle lines 14A, 14B and out through the nozzle openings 15A, 15B. The coupling unit 13 is adapted to control the connection of one nozzle line at a time. The connection is made on such a salt that the cleaning liquid only flows in the intended nozzle line and on such a salt that the cleaning liquid only flows out through the corresponding intended nozzle opening. Furthermore, the connection of the nozzle line by means of the coupling unit 13 is adapted to be controlled only in dependence on the pressure P from the cleaning liquid, and the connection takes place when the pressure P of the cleaning liquid at the coupling unit exceeds a predetermined pressure Pmin.
    公开号:SE1250979A1
    申请号:SE1250979
    申请日:2012-09-03
    公开日:2014-03-04
    发明作者:Jon Lindholm
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    BACKGROUND OF THE INVENTION AND PRIOR ART The invention relates to a cleaning system of a vehicle headlight according to the preamble of the independent patent claim.
    In connection with a vehicle's headlights, there is usually some form of cleaning system for the headlights. Such a system usually comprises at least one tank, hoses and nozzle. In this system, a cleaning roller is sprayed under High pressure on the headlights. Each nozzle is usually arranged at a headlight for the purpose of cleaning a headlight.
    In cleaning systems used today, it is common for a nozzle to spray cleaning liquid on a headlight with a certain pressure. Usually can up to two. light functions are cleaned if they are integrated in the same headlight. This is achieved with the help of two nozzles integrated in the same nozzle unit which are directed at different halls. Cleaning two headlights simultaneously by driving the number of nozzles and spray directions to three in the nozzle unit causes the pressure on the cleaning fluid to be applied and the headlights are then sufficiently cleaned as there is not enough pressure to distribute the cleaning fluid between the nozzles. In addition, it can be costly and problemous when mounting as a nozzle must be mounted at each headlight.
    Cleaning the headlights has been considered the most important from a safety point of view, where in today's vehicles it is usually only the larger headlights that are equipped with a cleaning system. Installing cleaning systems for smaller headlights has not been considered justifiable in terms of cost.
    Below are examples of documents showing known devices for cleaning headlights arranged on vehicles.
    FR 2 759 337 discloses a cleaning system for cleaning headlights and windscreens. The cleaning system includes a pump that can produce two different pressures, one pressure to clean the headlight and another pressure to clean the windshield. Furthermore, the system includes two different inlets, one for cleaning the windscreen and one for cleaning headlights.
    US 4,368,505 discloses a cleaning system for a vehicle's headlight. The cleaning system includes a spray nozzle that distributes detergent simultaneously to two different headlights. The spray nozzle distributes the agent in two different directions with an intermediate angle.
    EP 1 122 138 discloses an apparatus and method for cleaning a single headlight on motor vehicles. Cleaning of the headlight is done by a combination of the movement of a nozzle and of a support element that can quickly clean predetermined sub-areas of the headlight, on which cleaning agents are sprayed.
    As discussed above, it is a problem that usually only the larger headlights on a vehicle are equipped with a cleaning system. The object of the present invention is thus a cleaning system in connection with several headlights so that the pressure on the cleaning roller is sufficiently high to be able to be distributed between several nozzles so that the same cleaning system can be used for cleaning several headlights without the pressure being applied. This allows even smaller headlights to be cleaned of effective salt. A further object of the invention is that it becomes more cost-effective and easier to assemble as a nozzle can be used incorrectly for cleaning several headlights.
    SUMMARY OF THE INVENTION The above objects are achieved by the invention defined by the independent claim.
    Preferred embodiments are defined by the dependent claims.
    The invention relates to a cleaning system at a vehicle headlight, where the cleaning system comprises at least one tank, and a main line in its first spirit connected to the tank and in its second spirit connected to a coupling unit. Furthermore, a first nozzle line is connected to the coupling unit, comprising a first nozzle with at least one first nozzle opening, and a second nozzle line comprising a second nozzle with at least one second nozzle opening. In addition, in connection with the first spirit of the main line, there is a pump adapted to pump cleaning fluid from the tank through the main line and the nozzle lines and out through the nozzle openings. The coupling unit is adapted to control the connection of a nozzle line at a time. The connection takes place on such a salt that the cleaning liquid only flows into the intended nozzle line and on such a salt that the cleaning liquid only flows out through the corresponding intended nozzle opening. Furthermore, the connection of the nozzle line by means of the coupling unit is adapted to be controlled only in dependence on the pressure from the cleaning fluid, and the connection takes place when the pressure of the cleaning roller at the coupling unit exceeds a predetermined pressure.
    This is an advantage because it is a simple cleaning system for cleaning flora headlights that requires some additional control equipment. This results in a cost-effective cleaning system that can effectively clean headlights with a predetermined pressure on the cleaning liquid.
    BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a front view of a vehicle headlight on which a cleaning system according to the present invention is arranged, Figure 2 shows a top view of a cleaning system according to the present invention, Figure 3 shows a side view of a cleaning system according to the present invention, Figure 4 top view of a cleaning system according to a first embodiment of the invention, Figure shows a side view of a cleaning system in a first application according to the first embodiment of the invention, Figure 6 shows a side view of a cleaning system in a second application according to the first embodiment of the invention, and Figure 7 shows a top view of a cleaning system according to an alternative embodiment of the invention.
    DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS Figure 1 shows a front view of a vehicle on which headlights such as a first headlight 40 (for example headlights) and a second headlight 50, such as a fog light or or cornering light are arranged. The vehicle is equipped with a cleaning system 10 according to the present invention which sprays cleaning liquid (the direction of the cleaning liquid is marked as thick arrow figure) with a first jet 19A in at least one first direction on the first headlight 40 and a second jet 19B in at least one second direction on the second headlight 50. The jets 19A, 19B thus spray in at least two different directions. Every second activation cycle sprays a first jet 19A on a first headlight 40 and every other activation cycle sprays a second jet 19B on the second headlight 50.
    Figure 2 shows a top view of the cleaning system 10 of a vehicle headlight. The cleaning system comprises at least one tank 11, and a main line 12 which in its first spirit is connected to the tank 11 and in its second spirit is connected to a coupling unit 13. To the coupling unit 13 a first and a second nozzle line 14A, 14B are connected. Nozzle openings 15A, 15B are provided in respective nozzles 16A, 16B on the respective nozzle conduit 14A, 14B. In connection with the first spirit of the main line 12, there is a pump 17 adapted to pump cleaning liquid from the tank 11 through the main line 12 and the nozzle lines 14A, 14B, so that the liquid then sprays out through the nozzle openings 15A, 15B. As shown in the figure, the first jet 19A sprays in at least one first direction (shown in the figure as the jet is sprayed upwards) from the first nozzle opening 15A and the second jet 19B in at least one second direction (shown in the figure as the jet is sprayed downwards). The two jets 19A, 19B spray in at least two different directions, every other activation cycle sprays jet 19A and every other activation cycle sprays jet 19B. In this way, the pressure on the cleaning liquid becomes sufficiently strong to be able to be distributed between several nozzles so that the same cleaning system can be used for cleaning several headlights without the pressure being applied. The jets 19A, 19B not only need to spray in the up and down direction, other directions can of course also be possible.
    The pump 17 is controlled by an activating means 9 where the activating means 9 is arranged to receive sensor signals, e.g. regarding signals if the windscreen wipers are activated and the windscreen wipers are activated (not shown in figure) then the activating means 9 can control the pump 17 so that pump cleaning fluid from the tank 11 through the main line 12 and the nozzle lines 14A, 14B, so that the fluid then sprays out through the nozzle openings 15A, 15B .
    The activating means 9 can also be activated manually by the driver by the driver, for example, activating a knob in the cab (not shown in the figure). The information to the activating means is marked as the arrow 8 in the figure.
    Figure 3 shows a side view of the cleaning system 10 shown in figure 2. A part of the main line 12 connected to the coupling unit 13 is shown in figure 3. Since this is a side view, the two nozzle lines 14A, 14B are superimposed on each other. Through the nozzles 16A, 16B, cleaning fluid ejects into the first jet 19A upwards and the second jet 19B downwards.
    The coupling unit 13 is adapted to control the connection of one nozzle line 14A, 14B at a time. The connection takes place for the purpose that the cleaning liquid is adapted to flow only in the intended nozzle line 14A, 14B and that the cleaning liquid is adapted to flow out only through the corresponding intended nozzle opening 16A, 16B. Furthermore, the connection of the nozzle line 14A, 14B with the aid of the coupling unit 13 is adapted to be controlled only in dependence on the pressure P from the cleaning liquid. The pump 17 can create a predetermined minimum pressure rim of the cleaning roller so that when the cleaning roller flows in the cleaning system 10 with a pressure P exceeding a predetermined minimum pressure Pmin, the coupling unit 13 ensures that only one nozzle line 14A, 14B is connected at a time.
    The coupling unit 13 is thus a passive unit which is controlled by the pressure P of the liquid flask. The predetermined minimum pressure Pmin is displayed at the coupling unit 13 and is between 3-4 bar, Preferably the predetermined minimum pressure is 3.5 bar. There is thus no active control device connected to the coupling unit 13, such as a separate control unit.
    In a first embodiment of the present invention, the coupling unit 13 of the cleaning system comprises a valve means 23 adapted to control the connection of the respective nozzle line 14A, 14B. This is shown in a view from above in figure 4. A part of the main line 12 connected to the valve member 23 is shown in this figure. The valve means 23 comprises a tapping means 28 which can move between a first outlet layer 1 at two projections 22, to a second layer 2 at a branch between two nozzle lines 14A, 14B, further to a third layer either at projections 24 in the second nozzle line 14B denoted by 3a or to a third layer at projections 24 in the first nozzle line 14A denoted by 3b. The tapping member 28 may be, for example, a spherically shaped ball or a cylinder and its size is limited by the geometry of the valve member 23.
    Since no cleaning liquid surfaces in the nozzle, the tapping means 28 is in initial position 1. When the cleaning roller floats with at least one predetermined pressure, the tapping means 28 is moved to layer 2. With the help of the cleaning liquid pressure, the tapping means 28 then either layer 3a or 3b. When one of these layers is reached, the floc is blocked by cleaning liquid to spray out of the corresponding nozzle opening. The connection of the respective nozzle line 14A, 14B is adapted to be controlled by the design of the branch between the first and the second nozzle line 14A, 14B. The tip-like portion between the branch of the nozzle lines 14A, 14B may be formed on different salts. According to different embodiments, the design of the branch between the first and second nozzle lines 14A, 14B can be achieved on several different salts which can also be combined with each other. For example, the angle between the nozzle lines 14A, 14B may be adjusted, the tip between the branch projecting towards the main line may be chamfered or twisted at some angle, or the inner diameters of the nozzle lines 14A, 14B may be different in size.
    The design of the branch is thus adapted to ensure that the connection of the first nozzle line 14A occurs with a predetermined first probability and the connection of the second nozzle line 14B occurs with a predetermined second probability.
    Because the tip of the branch can be formed on different salts, a predetermined probability can be created for the sensing member 28 to select the first and the second nozzle line 14A, 14B, respectively. The probability that Onska's is allowed to clean the different headlights is determined, among other things, by the need for cleaning the different headlights, the size of the headlights, etc. The connection of the first nozzle line 14A is suitably adapted to occur with a probability of 70% and the connection of the second nozzle. adapted to occur with a probability of 30%.
    This ratio can also be 60/40 or 50/50. Since the headlights that are to be cleaned there are the same size, it can be appropriate that they are cleaned just as often, ie. that the probability of cleaning is the same for bathing. In the case of a larger headlamp such as a headlight and a smaller headlamp such as a fog light, the probability should be set to 70/30 or 60/40.
    As shown in the side views in Figures 3, 5 and 6, the nozzles 16A, 16B and the nozzle openings 15A, 15B are adapted to be arranged higher in height than the coupling unit 13 when arranging the cleaning system on a vehicle.
    Figure 5 shows a side view of a cleaning system in a first application according to the first embodiment of the invention. In this first application, the sealing member 28 of the valve member 23 is arranged at the projections 24 in the second nozzle line 14B in Idge 3a to enable the cleaning fluid to spray out of the opening of the first nozzle line with a first nozzle 19A.
    Figure 6 shows a side view of a cleaning system in a second application according to the first embodiment of the invention. In this second application, the tapping means 28 of the valve means 23 is arranged at the projections 24 in the first nozzle line 14A in Idge 3b to allow the cleaning roller to spray out of the opening of the second nozzle line with a second rod 19B.
    When the pressure from the cleaning liquid exceeds a predetermined minimum pressure, the valve means 23 is adapted to be moved from the outlet layer 1 in the coupling unit 13 into the respective nozzle line 14A, 14B, and where the pressure is below a predetermined minimum pressure, the valve means 23 is further adapted to assist by gravity. to the output layer in the switching unit 13.
    As can be seen from Figures 4 to 6, the coupling unit 13 comprises projections 22, which are arranged on the inside of the main line 12. These projections 22, which are preferably cone-shaped, have the purpose of preventing the gripping member 28 from moving further away from the nozzles 16A, 16B in the main line. In these figures it can also be seen that the nozzle lines 14A, 14B comprise projections 24 arranged on. the insides of the nozzle lines 14A, 14B. These projections 22, which are preferably also cone-shaped, have the purpose of stopping the sealing member 28 and thus, together with the mounting member 28, preventing cleaning fluid from spraying out of the respective nozzle opening 15A, 15B. Other appropriate designs pa. utsprdnget 22 dr of course also. possible. Within the scope of the invention, there may be several openings in each nozzle 16A, 16B. It is also possible for more than two nozzle lines to be connected to the main line for the purpose of cleaning three or more headlights.
    Figure 7 shows an alternative embodiment of the present invention. In this figure a cleaning system 10 is shown in a top view of the corresponding salt as in figures 2 and 4. In figure 7, however, the coupling unit 13 comprises a mechanical tilting device 33. This tilting device is controlled to block the flow of cleaning liquid to either the first nozzle line 14A or the second nozzle line 14B with the aid of the pressure from the cleaning liquid.
    The present invention is limited to the above-described preferred embodiments. Various alternatives, modifications and equivalents can be used.
    The above-mentioned embodiments are therefore not to be construed as limiting the scope of the invention, as defined by the appended claims.
    权利要求:
    Claims (8)
    [1]
    A cleaning system (10) at a vehicle headlight, wherein the cleaning system comprises at least one tank (11), and a main line (12) connected in its first spirit to the tank (11) and in its second spirit connected to a coupling unit (13), further connecting to the coupling unit (13) a first nozzle line (14A) comprising a first nozzle (16A) with at least a first nozzle opening (15A), and a second nozzle line (14B) comprising a second nozzle (16B) with at least a second nozzle opening (15B), and wherein in connection with the first spirit of the main line (12) there is a pump (17) adapted to pump cleaning liquid from the tank (11) through the main line (12) and the nozzle lines (14A, 14B) and out through the nozzle openings (15A). , 15B), characterized in that the coupling unit (13) is adapted to control the connection of a nozzle line (14A, 14B) at a time, the connection taking place on such a salt that the cleaning roller only flows in the intended the nozzle line (14A, 14B) and in such a way that the cleaning liquid only flows out through the corresponding intended nozzle opening (15A, 15B), and wherein the connection of the nozzle line (14A, 14B) by means of the coupling unit (13) is adapted to be controlled only in of the pressure P from the cleaning fluid, and the connection is made dd. cleaning water pressure P at the coupling unit Exceeds a predetermined pressure Run.
    [2]
    System according to claim 1, characterized in that the coupling unit (13) comprises a valve means (23) adapted to control the connection of the respective nozzle line (14A, 14B), and wherein the valve means (23) comprises a tapping means (28). 11
    [3]
    System according to any one of claims 1 or 2, characterized in that the connection of the respective nozzle line (14A, 14B) is adapted to be controlled by the design of the branch between the first and the second nozzle line (14A, 14B).
    [4]
    System according to claim 3, characterized in that the design of the branch is adapted to ensure that the connection of the first nozzle line (14A) occurs with a predetermined first probability and the connection of the second nozzle line (14B) occurs with a predetermined second probability.
    [5]
    System according to one of the preceding claims, characterized in that the nozzles (16A, 16B) and the nozzle openings (15A, 15B) are adapted to be arranged higher in height than the coupling unit (13) when arranging the cleaning system on a vehicle.
    [6]
    System according to one of the preceding claims, characterized in that when the pressure P from the cleaning liquid exceeds a predetermined minimum pressure Pmin, the gripping means (28) is adapted to be moved from an output layer in the coupling unit (13) into the respective nozzle line (14A, 14B). , and thereby da. the pressure P is less than a predetermined minimum pressure P, but the gripping means (28) is further adapted to return to its initial position in the coupling unit (13) by means of gravity.
    [7]
    System according to claim 6, characterized in that the predetermined minimum pressure Pmin is 3.5 bar.
    [8]
    System according to any one of claims 2 to 7, characterized in that the coupling unit (13) comprises projections (22), which are arranged on the inside of the main line (12), and wherein the nozzle lines (14A, 14B) comprise projections (24) arranged on the insides of the nozzle lines (14A, 14B).
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    同族专利:
    公开号 | 公开日
    SE537710C2|2015-10-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1250979A|SE537710C2|2012-09-03|2012-09-03|Cleaning system at a vehicle's headlight|SE1250979A| SE537710C2|2012-09-03|2012-09-03|Cleaning system at a vehicle's headlight|
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