JP5431850B2 - Vehicle with window glass - Google Patents

Description

  The present invention relates to a vehicle with a window glass, which includes a driver's seat, a window glass of the driver's seat, and a wiper that wipes off dirt on the window glass using a window cleaning liquid.

  The dirt on the window glass of the driver's seat of a conventional tractor (vehicle with window glass) sprays window washer liquid (cleaning liquid for windows) upward from the nozzle formed on the hood toward the windshield. Immediately after that, it was rubbed (wiped) with a wiper that operated. For this reason, the quality of the wiper wiping accuracy has a great influence on the cleaning of the window glass. Therefore, as in Patent Document 1, the wiper blade has a two-blade structure, and both ends of the wiper blade are bent more than the other parts so that the wiper blade follows the curved surface of the windshield. A technique for improving the above is disclosed.

JP 2002-012131 A

  However, even with such a wiper, for example, when the position of dirt on the windshield is away from the location where the window washer fluid is sprayed, it is not possible to spray the window washer fluid directly on the dirt location. . In such a case, the wiper that is actuated rubs the dirt itself while stretching the window washer liquid to the spot of the dirt. Accordingly, there is a problem that the window cannot be sufficiently permeated into the soiled area and is rubbed with the wiper, and the dirt cannot be completely removed during the operation of the wiper. SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle with a window glass that can reliably remove dirt on the window glass of a driver's seat.

For this reason, the invention described in claim 1 includes a driver's seat, a window glass of the driver's seat, a wiper that wipes off dirt on the window glass using a window cleaning liquid, a cleaning liquid tank that stores the window cleaning liquid, In a vehicle with a window glass provided with an engine that is a drive unit for self-running,
The window cleaning liquid can be sprayed through a nozzle provided in a bonnet and a nozzle provided in a wiper,
The window cleaning liquid is sprayed by selecting either a nozzle provided in the bonnet or a nozzle provided in the wiper,
The cleaning liquid tank is provided in the vicinity of the engine and in the bonnet,
In addition to heating the window cleaning liquid stored in the cleaning liquid tank using exhaust heat generated from the engine, the cleaning liquid tank is directed to a nozzle provided in the bonnet and a nozzle provided in the wiper. the even heating shi the window washing liquid,
The wiper comprises a wiper blade that wipes against the window glass and wipes, a wiper support part that supports the wiper blade, and a pipe that guides the window cleaning liquid to a nozzle provided in the wiper.
The nozzle is provided at the tip of the pipe, the tip of the pipe is exposed from the wiper support, and the exposed portion of the pipe is formed in an accordion shape so that the injection direction of the nozzle can be changed. .

The invention according to claim 2 includes a driver's seat, a window glass of the driver's seat, a wiper that wipes off dirt on the window glass using a window cleaning liquid, a cleaning liquid tank that stores the window cleaning liquid, and a self-propelled vehicle. In a vehicle with a window glass provided with an engine that is a drive unit for
The window cleaning liquid can be sprayed through a nozzle provided in a bonnet and a nozzle provided in a wiper,
The window cleaning liquid is sprayed by selecting either a nozzle provided in the bonnet or a nozzle provided in the wiper,
The cleaning liquid tank is provided in the vicinity of the engine and in the bonnet,
In addition to heating the window cleaning liquid stored in the cleaning liquid tank using exhaust heat generated from the engine, the cleaning liquid tank is directed to a nozzle provided in the bonnet and a nozzle provided in the wiper. Warming the window cleaning liquid,
A rotation shaft for rotating the wiper, and a rotation portion for holding the rotation shaft,
The rotating part is composed of a rotating member that rotates together with the rotating shaft, and an immovable member that is provided so as to surround an outer edge of the rotating member,
The rotating member and the immovable member form a space at the center portion to constitute the accommodating portion for holding the window cleaning liquid, and contact with airtightness at the edge portion,
A first pipe is inserted between the stationary member and the accommodating portion to allow the window cleaning liquid to flow from the cleaning liquid tank to the accommodating portion, while a second pipe is interposed between the movable member and the accommodating portion. The window cleaning liquid is sent out from the housing portion to the wiper through a pipe .

The invention according to claim 3 includes a driver's seat, a window glass of the driver's seat, a wiper that wipes off dirt on the window glass using a window cleaning liquid, a cleaning liquid tank that stores the window cleaning liquid, and a self-propelled vehicle. In a vehicle with a window glass provided with an engine that is a drive unit for
The window cleaning liquid can be sprayed through a nozzle provided in a bonnet and a nozzle provided in a wiper,
The window cleaning liquid is sprayed by selecting either a nozzle provided in the bonnet or a nozzle provided in the wiper,
The cleaning liquid tank is provided in the vicinity of the engine and in the bonnet,
In addition to heating the window cleaning liquid stored in the cleaning liquid tank using exhaust heat generated from the engine, the cleaning liquid tank is directed to a nozzle provided in the bonnet and a nozzle provided in the wiper. Warming the window cleaning liquid,
The wiper comprises a wiper blade that wipes against the window glass and wipes, a wiper support part that supports the wiper blade, and a pipe that guides the window cleaning liquid to a nozzle provided in the wiper.
While providing the nozzle at the tip of the pipe, the tip of the pipe is exposed from the wiper support, the exposed portion of the pipe is formed in a bellows shape, and can change the injection direction of the nozzle,
A rotation shaft for rotating the wiper, and a rotation portion for holding the rotation shaft,
The rotating part is composed of a rotating member that rotates together with the rotating shaft, and an immovable member that is provided so as to surround an outer edge of the rotating member,
The rotating member and the immovable member form a space at the center portion to constitute the accommodating portion for holding the window cleaning liquid, and contact with airtightness at the edge portion,
A first pipe is inserted between the stationary member and the accommodating portion to allow the window cleaning liquid to flow from the cleaning liquid tank to the accommodating portion, while a second pipe is interposed between the movable member and the accommodating portion. The window cleaning liquid is sent out from the housing portion to the wiper through a pipe .

According to a fourth aspect of the present invention, in the vehicle with a window glass according to any one of the first to third aspects, a pressurizing means is provided, and the window cleaning liquid is pressurized by the pressurizing means and then provided to the bonnet. A vehicle with a window glass sprayed from a nozzle and a nozzle provided in the wiper,
Pressure reducing means is provided between the pressurizing means and the nozzle provided in the wiper, and the window cleaning liquid sprayed from the nozzle provided in the bonnet is the spray pressure of the window cleaning liquid sprayed from the nozzle provided in the wiper. It is characterized by lower than the injection pressure .

The invention according to claim 5 is the vehicle with a window glass according to any one of claims 1 to 4, wherein the window cleaning liquid is sprayed from a nozzle provided in the bonnet and a nozzle provided in the wiper. The wiper is activated to wipe off dirt on the window glass .

According to the first aspect of the present invention, the driver's seat, the window glass of the driver's seat, the wiper for wiping the window glass with the window cleaning liquid, and the cleaning liquid tank for storing the window cleaning liquid are self-propelled. In a vehicle with a window glass provided with an engine that is a drive unit for the window cleaning liquid can be sprayed through a nozzle provided in a bonnet and a nozzle provided in a wiper, and the window cleaning liquid is provided in a nozzle provided in the bonnet, or The cleaning liquid tank is sprayed by selecting one of the nozzles provided in the wiper, and the cleaning liquid tank is provided in the bonnet near the engine and is stored in the cleaning liquid tank using the exhaust heat generated from the engine. It is added to warm, from the cleaning liquid tank, a nozzle provided in the bonnet, and also heat the window cleaning liquid toward the nozzle provided in the wiper The wiper includes a wiper blade that wipes against the window glass, wipes the wiper blade that supports the wiper blade, and a pipe that guides the window cleaning liquid to the nozzle provided in the wiper. In addition, the tip end portion of the pipe is exposed from the wiper support portion, and the exposed portion of the pipe is formed in an accordion shape so that the injection direction of the nozzle can be changed .
Therefore, the window cleaning liquid can be appropriately sprayed on the soiled portion. Accordingly, after the window cleaning liquid has been permeated into the dirt by a sufficient amount, the dirt can be rubbed with the wiper, and the dirt can be completely removed. Therefore, it is possible to provide a vehicle with a window glass that can reliably remove dirt on the window glass of the driver's seat.
Moreover, the injection direction of a nozzle can be easily changed by changing the direction of a pipe as needed. Therefore, the window cleaning liquid can be more appropriately sprayed onto the window glass.

Further , the spraying position of the window cleaning liquid can be selected according to the location of the dirt, and the window cleaning liquid is not used unnecessarily.

In addition , it is possible to inject the heated window cleaning liquid into dirt, making it easier to decompose dirt compared to room temperature window cleaning liquid, and more reliably removing dirt on the window glass. It is possible to provide an attached vehicle.

In addition , the window cleaning liquid can be efficiently heated using high-temperature heat. In addition, it is not necessary to separately provide a heating device, and a vehicle with a window glass having a simple structure can be provided.

In addition , the window cleaning liquid can be heated when it is stored in the cleaning liquid tank. Further, since the waste heat of the drive unit is used, it is not necessary to separately provide a heating device, and the window cleaning liquid can be efficiently heated.

Further , the window cleaning liquid can be more efficiently heated and sprayed onto the window glass. Thus, it is possible to provide a vehicle with a window glass that can more reliably remove dirt on the window glass.

According to the second aspect of the present invention , the driver's seat, the window glass of the driver's seat, the wiper that wipes off the window glass using the window cleaning liquid, and the cleaning liquid tank that stores the window cleaning liquid are self-propelled. In a vehicle with a window glass provided with an engine that is a drive unit for the window cleaning liquid can be sprayed through a nozzle provided in a bonnet and a nozzle provided in a wiper, and the window cleaning liquid is provided in a nozzle provided in the bonnet, or The cleaning liquid tank is sprayed by selecting one of the nozzles provided in the wiper, and the cleaning liquid tank is provided in the bonnet near the engine and is stored in the cleaning liquid tank using the exhaust heat generated from the engine. In addition to heating the window cleaning liquid from the cleaning liquid tank to the nozzle provided in the bonnet and the nozzle provided in the wiper A rotating member for rotating the wiper, and a rotating member for holding the rotating shaft, the rotating member rotating with the rotating shaft, and an outer edge of the rotating member The stationary member and the stationary member are provided so as to surround the wall, and the rotating member and the stationary member form a space in the central portion to hold the window cleaning liquid and are airtight in the edge portion. The first pipe is passed through and attached between the stationary member and the accommodating part to allow the window cleaning liquid to flow from the cleaning liquid tank to the accommodating part, while the second pipe is penetrated between the movable member and the accommodating part. Then, the window cleaning liquid is sent from the container to the wiper.
Therefore, the window cleaning liquid can be appropriately sprayed on the soiled portion. Accordingly, after the window cleaning liquid has been permeated into the dirt by a sufficient amount, the dirt can be rubbed with the wiper, and the dirt can be completely removed. Therefore, it is possible to provide a vehicle with a window glass that can reliably remove dirt on the window glass of the driver's seat.
Further, the pipe can be prevented from being twisted when the wiper rotates.

According to the invention described in claim 3 , the driver's seat, the window glass of the driver's seat, the wiper for wiping the window glass with the window cleaning liquid, and the cleaning liquid tank for storing the window cleaning liquid are self-propelled. In a vehicle with a window glass provided with an engine that is a drive unit for the window cleaning liquid can be sprayed through a nozzle provided in a bonnet and a nozzle provided in a wiper, and the window cleaning liquid is provided in a nozzle provided in the bonnet, or The cleaning liquid tank is sprayed by selecting one of the nozzles provided in the wiper, and the cleaning liquid tank is provided in the bonnet near the engine and is stored in the cleaning liquid tank using the exhaust heat generated from the engine. In addition to heating the window cleaning liquid from the cleaning liquid tank to the nozzle provided in the bonnet and the nozzle provided in the wiper The wiper includes a wiper blade that wipes against the window glass, wipes the wiper blade that supports the wiper blade, and a pipe that guides the window cleaning liquid to the nozzle provided in the wiper. And the tip of the pipe is exposed from the wiper support part, and the exposed part of the pipe is formed in a bellows shape to change the injection direction of the nozzle, and the rotation shaft for rotating the wiper and its rotation A rotating member that holds the shaft, the rotating member rotating together with the rotating shaft, and a stationary member provided so as to surround the outer edge of the rotating member. And the stationary member form a housing portion that holds a window cleaning liquid by forming a space in the central portion, and is in airtight contact with the edge portion, and the first pad is interposed between the stationary member and the housing portion. The window cleaning liquid is allowed to flow from the cleaning liquid tank into the housing portion through the housing, and the second pipe is inserted between the movable member and the housing portion to send the window cleaning liquid from the housing portion to the wiper. .
Therefore, the window cleaning liquid can be appropriately sprayed on the soiled portion. Accordingly, after the window cleaning liquid has been permeated into the dirt by a sufficient amount, the dirt can be rubbed with the wiper, and the dirt can be completely removed. Therefore, it is possible to provide a vehicle with a window glass that can reliably remove dirt on the window glass of the driver's seat.
Moreover, the injection direction of a nozzle can be easily changed by changing the direction of a pipe as needed. Therefore, the window cleaning liquid can be more appropriately sprayed onto the window glass.
Further, the pipe can be prevented from being twisted when the wiper rotates.

According to invention of Claim 4, it is a vehicle with a window glass which injects from the nozzle with which a pressurization means is provided, and the cleaning liquid for windows is pressurized with the pressurization means, and is provided in a bonnet, and the nozzle with which a wiper is provided. A pressure reducing means is provided between the pressurizing means and the nozzle provided in the wiper, and an injection pressure of the window cleaning liquid injected from the nozzle provided in the wiper is higher than an injection pressure of the window cleaning liquid injected from the nozzle provided in the bonnet. Therefore, the pressure value of the pressure means and the pressure value of the pressure reduction means can be appropriately set, and the injection pressure of the nozzle provided in the bonnet and the injection pressure of the nozzle provided in the wiper can be adjusted independently. It becomes possible. Therefore, it is possible to provide a vehicle with a window glass that can set an optimal injection pressure and inject it at a desired location.

According to the fifth aspect of the present invention, since the window cleaning liquid is sprayed from the nozzle provided in the bonnet and the nozzle provided in the wiper, the wiper operates to wipe off the dirt on the window glass. After the liquid layer is formed on the surface, the wiper can perform a wiping operation on the liquid layer. Therefore, it is possible to prevent the wiper from operating on the dried window glass surface, and thus it is possible to prevent the wiper from being worn.

It is a side view of the tractor as an example of the vehicle with a window glass of this invention. It is a principal part schematic front view of FIG. It is a figure explaining the path | route from a washing | cleaning-liquid tank to a nozzle. (A) of the wiper as another example of this invention is a side view, (b) is a top view. (A) of the wiper as another example of this invention is a side view, (b) is a top view. It is a schematic sectional drawing of the example which attached the rotary joint to the window glass of the vehicle with a window glass of this invention.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view of a tractor 21 as a vehicle with a window glass according to the present invention, and FIG. The tractor 21 includes two front wheels 23 and two rear wheels 24 on the front and rear sides of the body frame 22, a bonnet 25 is formed above the front wheels 23, and an engine as a drive unit is provided on the inside thereof. And the driving | running cabin 26 is provided in the rear part of the bonnet 25 continuously.

  In the driving cabin 26, an operation key 28 such as an engine key, an accelerator pedal, a clutch pedal, and a brake pedal, a shift lever, a handle 29, a driver's seat 30, and a display unit (not shown) for displaying speed, fuel, alarm, and the like. ) Etc. In addition to the windshield (window glass) 35 and the rear glass, the driving cabin 26 has a door 31 made of glass in order to improve visibility. In addition, an antenna 32 for receiving radio broadcasting or the like is attached to the left front part of the driving cabin 26, and mirrors 33 for confirming the rear are provided on both front parts of the driving cabin 26.

On the bonnet 25 in front of the operation cabin 26, a pipe-like exhaust port 27 for guiding engine exhaust is provided in the vertical direction. Further, a step 34 for the driver to move up and down to the driving cabin 26 is fixed to the vehicle body frame 22 below the front portion of the driving cabin 26.
Below the rear part of the driving cabin 26, a fender 36 is provided so as to cover the vicinity of the upper rear half of the rear wheel 24, and a reflection plate 37 is attached to the rear end of the fender 36. The fender 36 is fixed to the main body frame 22.

  Further, a top link 39, a pair of left and right lower links 40, and a PTO shaft 41 are extended at the rear part of the tractor 21. A three-point link type auto hitch may be attached to the tips of the top link 39 and the pair of left and right lower links 40. If necessary, a working machine such as a rotary tiller 50 is attached to the rear part of the tractor 21 via the top link 39 and the lower link 40, and a PTO shaft 41 is attached to the input shaft of the rotary tiller 50.

  A wiper W is provided below the windshield 35. The wiper W is configured to be rotatable about 180 degrees with respect to the rotation center C. Reference numeral WA denotes an area that can be wiped off by the operation of the wiper W. The wiper W includes a wiper blade that wipes against the window glass, and a wiper support portion that holds the wiper blade. The wiper support portion includes a pipe and two nozzles as described later ( In the present invention, the number of nozzles is not limited to two). On the other hand, two nozzles N1 and N2 are provided so as to protrude from the bonnet 25 slightly closer to the left and right sides than the center of the bonnet 25 and in the vicinity of the operation cabin 26. The nozzles N1 and N2 are for injecting a window washer liquid (window cleaning liquid) onto the windshield 35 through a pipe which will be described later (in this example, water is used as the window washer liquid). That is, the nozzles N1 and N2 inject the window washer liquid toward the windshield 35 from below.

  In FIG. 3, the ejection path | route of a window washer liquid is shown. The window washer liquid is stored in a storage tank (cleaning liquid tank) T. The storage tank T is placed on the engine (drive unit) E of the tractor 21 and is stored in the bonnet 25. For this reason, the heat generated by the engine E during driving is easily transmitted to the storage tank T, and the window washer liquid is warmed (or kept warm) from the outside of the storage tank T. The storage tank T is connected to the inlet side of the pump (pressurizing means) PU via a pipe P (the pressurization value of the pump PU is appropriately set according to the injection pressures of the nozzles N1 and N2). To do).

  Another pipe P is connected to the outlet side of the pump PU and is connected to the heat exchanger HE. On the other hand, the heat exchanger HE has a heat transfer member R1 inserted into the exhaust port 27. The heat transfer member R1 receives exhaust heat from the engine E flowing in the exhaust port 27. Another heat transfer member R2 that receives the exhaust heat is inserted into the exhaust port 27, and the other end of the heat transfer member R2 is inserted into the storage tank T to heat the window washer fluid in the storage tank T. It is desirable that the heat transfer members R1 and R2 be installed on the downstream side of the manifold portion, that is, on the downstream side where a plurality of valves are gathered (in the figure, the flow of exhaust is indicated by arrows). With this configuration, the heat transfer members R1 and R2 can constantly receive the exhaust heat from the plurality of valves.

  Another pipe P0 is attached to the outlet side of the heat exchanger HE. The other end of the pipe P0 is connected to the flow path switching unit S. The flow path switching unit S has one inflow path and three outflow paths. That is, the pipe P1 going to the wiper W and the pipes P2 and P2 going to the nozzles N1 and N2, respectively. The flow path switching unit S is for switching and sending out the pressurized window washer liquid fed from the pump PU to the pipe P1 or the pipe P2. The flow path switching unit S can switch the outflow path by a not-shown washer liquid switching switch provided near the handle 29 in the operation cabin 26. In addition, you may comprise the flow-path switching part S so that a window washer liquid can be sent out to both the pipe P1 and the pipe P2.

  The pipe P1 further extends into the wiper W through a relief valve (pressure reducing means) V, and is connected to the two nozzles N3 and N4 in the wiper support portion. The relief valve V is for setting the injection pressure of the window washer liquid injected from the nozzles N3 and N4 to be lower than the injection pressure of the window washer liquid injected from the nozzles N1 and N2. That is, in the pump PU, the pressurization value is set considering only the nozzles N1 and N2, and therefore, is set larger than the pressurization value required by the nozzles N3 and N4 (this is the nozzle N1). , N2 and the windshield 35 are larger than the distance between the nozzles N3 and N4 and the windshield 35). The relief valve V is further connected to the storage tank T via a pipe P3, and the inside of the pipe P1 is decompressed by returning a certain amount of window washer liquid to the storage tank T.

  On the other hand, nozzles N1 and N2 are provided at the tip of the pipe P2. The nozzles N1 to N4 have the same structure as that attached to a normal automobile or tractor. The pipes P, P0, P1, and P2 may be flexible materials, for example, vinyl or a hard material such as plastic.

  Next, the operation | movement which cleans the windshield 35 of the tractor 21 using the wiper W is demonstrated. First, the driver sits on the driver seat 20 of the tractor 21 and turns the engine key to start the engine E. Then, hot exhaust gas generated by the combustion of the engine E flows in the exhaust port 27. As a result, the heat transfer members R1 and R2 are heated, and the heat is transferred to the heat exchanger HE and the storage tank T, respectively.

  For example, when a part of the windshield 35 is very dirty, the washer liquid selector switch is switched to the wiper W side. Then, a window switch is sprayed by pressing and holding a cleaning switch (not shown). Then, pump PU act | operates, a window washer liquid is attracted | sucked from the storage tank T, a pressure is added, and it sends out to the heat exchanger HE side. The window washer liquid is heated by receiving heat from the exhaust port 27 in the heat exchanger HE, and is sent to the pipe P1 through the flow path switching unit S.

  Then, after the pressure is reduced to a desired pressure by the relief valve V, it is injected from the nozzles N3 and N4 through the wiper W. Following this, the wiper W starts the wiping operation of the windshield 35. In the relief valve V, the pressure is reduced by returning a part of the window washer liquid sent by the pipe P1 to the storage tank T through the pipe P3.

  Next, the operation when the washer fluid selector switch is switched to the bonnet side will be described. A window washer liquid is ejected by pressing and holding a cleaning switch (not shown). The flow of the window washer liquid from the storage tank T to the flow path switching unit S at this time is the same as that described above, so the explanation will be given. Omitted. The window washer liquid is switched by the flow path switching unit S, is directed to the pipe P2, and is ejected from the nozzles N1 and N2. It is assumed that the window washer fluid that has been sprayed is appropriately switched by the washer fluid switching button according to the location of the dirt or the judgment of the driver.

  As described above, in this example, the normal window washer liquid is heated in the storage tank T and further heated instantaneously by the heat exchanger HE provided on the outlet side of the pump PU. This is due to the peculiarities of farm work that require the use of water as the window washer fluid. That is, when a window washer liquid containing a detergent as a main component is used in the field, there is a concern about harmful effects on agricultural products due to the spraying of the detergent, and it is desirable to use water as the window washer liquid. However, the window washer liquid using water has a lower cleaning effect than the window washer liquid using detergent, and there is a problem that the windshield 35 cannot be sufficiently cleaned. In order to make up for this, in this example, a technique for warming water and facilitating penetration of dirt in a short time is presented.

  In addition, during the season when the outside air temperature is low, an antifreeze solution is usually added to the window washer solution. However, there are concerns about the harmful effects of antifreeze components on crops, and it is not desirable to use them for farm vehicles. Therefore, although the window washer liquid of water is used, there is a problem that the water in the storage tank T is frozen and the window washer liquid cannot be used in the cold season. In order to solve this, in this example, a technique for preventing freezing by warming the storage tank T itself with the heat of the engine E (heating by the heat transfer member R2 also contributes to prevention of freezing) is presented. .

  As described above, in this example, the example of injecting the nozzles N1 to N4 onto the windshield has been described as an example of the technology of the invention, but may be applied to the rear glass. That is, two nozzles are provided near the roof of the driving cabin 26 above the rear glass. On the other hand, another two nozzles are provided on the rear wiper attached to the rear glass (this configuration is the same as that of the wiper W). Then, a rear window cleaning switch is provided in the vicinity of the handle 29, and the window washer liquid is ejected and the rear wiper is operated only while the cleaning switch is pressed and held. Further, another flow path switching unit is provided between the storage tank T and the nozzle (this configuration is the same as that of the flow path switching unit S), and the rear wiper side and the rear glass upper side are switched. This switching is performed by another washer fluid switching switch provided in the operation cabin 26.

  Moreover, although the vehicle with a window glass which has the engine E was demonstrated in the above-mentioned example, you may apply to the vehicle which drive | works with a motor as a drive part. In this case, the window washer liquid is heated by the heat exchanger using the heat generated by the motor.

  4 (a) and 4 (b) show another example of the wiper of the present invention. The wiper W1 in this example includes a wiper base end portion W1a, a wiper support portion W1b provided at the tip of the wiper base end portion W1a, a wiper blade W1c supported by the wiper support portion W1b, and a window washer on the wiper blade W1c. A pipe P4 for supplying liquid is provided. The distal end of the rotation axis A of the wiper is fixed to the proximal end side of the wiper proximal end W1a. The base end of the rotation axis A is connected to a motor (not shown). The proximal end side of the pipe P4 is connected to the outlet side of the relief valve V as shown in FIG. 3 (note that the pipe P4 in this example is not limited to being via the relief valve V, It may be directly connected to the exit side of the switching unit S). A hollow channel G is formed inside the wiper blade W1c. This flow path G is connected with the front-end | tip of the pipe P4 by the base end side.

  On the other hand, the tip of the flow path G is branched (in this example, seven) where the wiper blade W1c is in contact with the windshield 35 (the tip side of the wiper blade W1c). The base end side of the wiper W1c is held by the wiper support portion W1b. The base end side of the wiper support portion W1b (side connected to the wiper base end portion W1a) is connected to the wiper base end portion W1a so as to be bent upward. Thus, for example, when dust or the like adheres to the distal end side of the wiper blade W1c, the distal end side of the wiper blade W1c can be cleaned by lifting it with the proximal end side of the wiper support portion W1b as a rotation fulcrum. The flow path G formed in the wiper blade W1c is formed integrally with the rubber wiper blade W1c.

  When the windshield 35 is cleaned by the wiper W1 configured as described above, the washer liquid selector switch is switched to the wiper W1 side at the driver's seat. Then, a window switch is sprayed by pressing and holding a cleaning switch (not shown). Then, pump PU act | operates, a window washer liquid is attracted | sucked from the storage tank T, a pressure is added, and it sends out to the heat exchanger HE side. The window washer liquid is rapidly heated by receiving waste heat from the exhaust port 27 in the heat exchanger HE, and is sent out to the pipe P4 via the flow path switching unit S. The pressure is reduced to a desired pressure by the relief valve V, and then injected from the flow path G (seven in FIG. 4) through the wiper W1. Following this, the wiper W1 starts the wiping operation of the windshield 35. Therefore, the wiper W1 rotates while the sprayed window washer liquid is stretched to the windshield 35 by the wiper blade W1c, and at the same time, wipes off dirt.

  5A and 5B show a wiper of still another example of the present invention. The wiper W2 in this example includes a wiper base end W2a, a wiper support W2b provided at the tip of the wiper base end W2a, a wiper blade W2c supported by the wiper support W2b, and a window washer on the wiper blade W2c. A pipe P5 for supplying the liquid is provided. The distal end of the rotation axis A of the wiper is fixed to the proximal end side of the wiper proximal end W1a. The base end of the rotation axis A is connected to a motor (not shown). The base end side of the pipe P5 is connected to the outlet side of the relief valve V as shown in FIG. 3 (note that the pipe P5 in this example is not limited to being via the relief valve V, and the flow path It may be directly connected to the exit side of the switching unit S).

  The pipe P5 is exposed from the wiper support W2b at the tip of the wiper support W2b. This exposed portion is configured by a flexible pipe PJ having a bellows structure (that is, the proximal end of the flexible pipe PJ is connected to the distal end of the pipe P5). And the nozzle N5 is attached to the front-end | tip of the flexible pipe PJ. The flexible pipe PJ has a structure that can freely change the injection direction of the nozzle N5.

  In this example, as shown in FIG. 5B, the flexible pipe PJ is bent so that the nozzle N5 is positioned on the front side in the rotational direction of the wiper W2 with respect to the wiper support portion W2b. Further, the nozzle N5 is arranged so as to be at a height H position (from the top of the wiper support W2b) from the tip of the wiper blade W2c (contact portion with the windshield). . The height H can be changed according to the range in which the window washer liquid is to be ejected from the nozzle N5 and the ejection amount per unit area. That is, the injection range can be widened (and the injection amount per unit area can be reduced) by increasing the height H, and the injection range can be narrowed (and unit) by decreasing the height H. The injection amount per area can be increased).

  When the windshield 35 is cleaned with the wiper W2 configured in this manner, the washer liquid selector switch is switched to the wiper W2 side at the driver's seat. Then, a window switch is sprayed by pressing and holding a cleaning switch (not shown). Then, pump PU act | operates, a window washer liquid is attracted | sucked from the storage tank T, a pressure is added, and it sends out to the heat exchanger HE side. The window washer liquid is rapidly heated by receiving waste heat from the exhaust port 27 in the heat exchanger HE, and is sent out to the pipe P5 via the flow path switching unit S. The pressure is reduced to a desired pressure by the relief valve V, and then injected through the wiper W1 and further through the flexible pipe PJ from the nozzle N5 toward the windshield 35. Following this, the wiper W2 starts the wiping operation of the windshield 35.

  FIG. 6 shows still another example of the present invention. In this example, a rotary joint (rotating part) 50 is attached to the wiper W2 shown in FIGS. 5 (a) and 5 (b). Specifically, this is a configuration relating to a mounting portion between the rotating shaft A and the windshield 35 fixed to the base end portion of the wiper base end portion W2a. The rotary joint 50 includes an outer shell (non-moving member) 51 as a fixed side and an inner shell (rotating member) 52 that fits into the outer shell (non-moving member) 51.

  The inner shell 52 includes a cylindrical core portion 52a and a disk-shaped disc portion 52b formed so as to surround the cylinder in the vicinity of the upper and lower ends of the core portion 52a. A rotation shaft A is fixed on the inner side of the core portion 52a and is rotated integrally with the rotation shaft A. In FIG. 6, a through hole is formed in the disc portion 52b located outside the windshield 35, and the base end side of the second pipe P52 is fitted into this through hole. A bellows-like flexible pipe similar to the configuration shown in FIG. 5 is attached to the tip of the pipe P52, and a nozzle is attached to the tip of the flexible pipe.

  The outer shell 51 includes a cylindrical outer peripheral portion 51a having a diameter larger than that of the core portion 52a, and an annular portion 51b formed in a donut shape projecting from the upper and lower ends of the outer peripheral portion 51a toward the inside of the cylinder. ing. The outer shell 51 is provided so as to surround the outer edge of the inner shell 52. The outer peripheral portion 51a of the outer shell 51 is fixed to the windshield 35 via a sealing agent. In FIG. 6, a through hole is formed in the lower part of the outer shell 51, and the tip of the first pipe P51 is fitted into the through hole. The proximal end of the pipe P51 is connected to the outlet side of the relief valve V (see FIG. 3).

  The outer shell 51 and the inner shell 52 are hermetically sealed by an oil seal at the edge and slidable. Specifically, the inner surface of the annular portion 51b of the outer shell 51 and the outer surface of the disk portion 52b of the inner shell 52 are arranged so as to overlap each other, oil is filled between the two, and both have airtightness via the oil. The window washer liquid is configured to come into contact (for this reason, the window washer liquid does not leak from the storage portion 53). By arranging the outer shell 51 and the inner shell 52 in this way, the outer shell 51 and the inner shell 52 form a hollow accommodating portion 53 in the center. The accommodating portion 53 can hold a window washer liquid.

  In the rotary joint 50 configured as described above, when the window washer liquid is sprayed from the nozzle, the window PU washer is sucked and pressurized from the storage tank T by the pump PU, and then heated by the heat exchanger HE. To do. Then, the window washer fluid is caused to flow from the first pipe P51 into the accommodating portion 53 through the flow path switching portion S and the relief valve V. Since the accommodating portion 53 is already filled with the window washer liquid, the amount of the window washer liquid that has flowed in is sent out from the second pipe 52. And it injects from a nozzle through a flexible pipe. The wiper W2 starts to rotate after a certain period of time has elapsed after jetting. Since the inner shell 52 also rotates with the rotation of the wiper W2 and the rotation axis A, the second pipe P52 also rotates integrally with the wiper base end W2a and the inner shell 52. Therefore, the second pipe P52 does not bend or stretch and does not twist.

  The vehicle with a window glass of the present invention is not limited to a tractor, and can be applied to other agricultural machines having a window glass, such as a combine. In addition to this, it can be applied to any windowed vehicle other than agricultural machines.

21 Tractor (vehicle with window glass)
25 Bonnet 26 Driving cabin 27 Exhaust port 29 Handle 30 Driver's seat 35 Windshield (window glass)
50 Rotary joint (rotating part)
51 outer shell 51a outer peripheral part 51b annular part 52 inner shell 52a core part 52b disk part 53 accommodating part A rotational axis C rotational center E engine (drive part)
G flow path HE heat exchanger N1, N2, N3, N4, N5 nozzle P, P0, P1, P2, P3, P4 pipe P51 first pipe P52 second pipe PJ flexible pipe PU pump (pressurizing means)
R1, R2 Heat transfer member S Channel switching part T Storage tank (cleaning liquid tank)
V Relief valve (pressure reduction means)
W, W1, W2 Wiper WA Wiperable area W1a, W2a Wiper base end W1b, W2b Wiper support part W1c, W2c Wiper blade

Claims (5)

A driver's seat, a window glass of the driver's seat, a wiper that wipes off dirt on the window glass using a window cleaning liquid, a cleaning liquid tank that stores the window cleaning liquid, and an engine that is a drive unit for self-running In a vehicle with a window glass comprising:
The window cleaning liquid can be sprayed through a nozzle provided in a bonnet and a nozzle provided in a wiper,
The window cleaning liquid is sprayed by selecting either a nozzle provided in the bonnet or a nozzle provided in the wiper,
The cleaning liquid tank is provided in the vicinity of the engine and in the bonnet,
In addition to heating the window cleaning liquid stored in the cleaning liquid tank using exhaust heat generated from the engine, the cleaning liquid tank is directed to a nozzle provided in the bonnet and a nozzle provided in the wiper. the even heating shi the window washing liquid,
The wiper comprises a wiper blade that wipes against the window glass and wipes, a wiper support part that supports the wiper blade, and a pipe that guides the window cleaning liquid to a nozzle provided in the wiper.
The nozzle is provided at the tip of the pipe, the tip of the pipe is exposed from the wiper support, and the exposed portion of the pipe is formed in an accordion shape so that the injection direction of the nozzle can be changed. , Vehicle with window glass. A driver's seat, a window glass of the driver's seat, a wiper that wipes off dirt on the window glass using a window cleaning liquid, a cleaning liquid tank that stores the window cleaning liquid, and an engine that is a drive unit for self-running In a vehicle with a window glass comprising:
The window cleaning liquid can be sprayed through a nozzle provided in a bonnet and a nozzle provided in a wiper,
The window cleaning liquid is sprayed by selecting either a nozzle provided in the bonnet or a nozzle provided in the wiper,
The cleaning liquid tank is provided in the vicinity of the engine and in the bonnet,
In addition to heating the window cleaning liquid stored in the cleaning liquid tank using exhaust heat generated from the engine, the cleaning liquid tank is directed to a nozzle provided in the bonnet and a nozzle provided in the wiper. Warming the window cleaning liquid,
A rotation shaft for rotating the wiper, and a rotation portion for holding the rotation shaft,
The rotating part is composed of a rotating member that rotates together with the rotating shaft, and an immovable member that is provided so as to surround an outer edge of the rotating member,
The rotating member and the immovable member form a space at the center portion to constitute the accommodating portion for holding the window cleaning liquid, and contact with airtightness at the edge portion,
A first pipe is inserted between the stationary member and the accommodating portion to allow the window cleaning liquid to flow from the cleaning liquid tank to the accommodating portion, while a second pipe is interposed between the movable member and the accommodating portion. A vehicle with a window glass, wherein the window cleaning liquid is sent from the housing portion to the wiper through a pipe. A driver's seat, a window glass of the driver's seat, a wiper that wipes off dirt on the window glass using a window cleaning liquid, a cleaning liquid tank that stores the window cleaning liquid, and an engine that is a drive unit for self-running In a vehicle with a window glass comprising:
The window cleaning liquid can be sprayed through a nozzle provided in a bonnet and a nozzle provided in a wiper,
The window cleaning liquid is sprayed by selecting either a nozzle provided in the bonnet or a nozzle provided in the wiper,
The cleaning liquid tank is provided in the vicinity of the engine and in the bonnet,
In addition to heating the window cleaning liquid stored in the cleaning liquid tank using exhaust heat generated from the engine, the cleaning liquid tank is directed to a nozzle provided in the bonnet and a nozzle provided in the wiper. Warming the window cleaning liquid,
The wiper comprises a wiper blade that wipes against the window glass and wipes, a wiper support part that supports the wiper blade, and a pipe that guides the window cleaning liquid to a nozzle provided in the wiper.
While providing the nozzle at the tip of the pipe, the tip of the pipe is exposed from the wiper support, the exposed portion of the pipe is formed in a bellows shape, and can change the injection direction of the nozzle,
A rotation shaft for rotating the wiper, and a rotation portion for holding the rotation shaft,
The rotating part is composed of a rotating member that rotates together with the rotating shaft, and an immovable member that is provided so as to surround an outer edge of the rotating member,
The rotating member and the immovable member form a space at the center portion to constitute the accommodating portion for holding the window cleaning liquid, and contact with airtightness at the edge portion,
A first pipe is inserted between the stationary member and the accommodating portion to allow the window cleaning liquid to flow from the cleaning liquid tank to the accommodating portion, while a second pipe is interposed between the movable member and the accommodating portion. A vehicle with a window glass, wherein the window cleaning liquid is sent from the housing portion to the wiper through a pipe. A vehicle equipped with a window glass that is sprayed from a nozzle provided in the bonnet and a nozzle provided in the wiper after pressurizing the window cleaning liquid by the pressure means;
Pressure reducing means is provided between the pressurizing means and the nozzle provided in the wiper, and the window cleaning liquid sprayed from the nozzle provided in the bonnet is the spray pressure of the window cleaning liquid sprayed from the nozzle provided in the wiper. The vehicle with a window glass according to any one of claims 1 to 3, wherein the vehicle is made lower than the injection pressure. The window cleaning liquid is sprayed from a nozzle provided in the bonnet and a nozzle provided in the wiper, and then the wiper operates to wipe off dirt on the window glass . Vehicle with window glass as described in 1.

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