JP4155910B2 - Air-conditioning air blowing device - Google Patents

Description

  The present invention relates to an air-conditioning wind blowing device provided with wind direction adjusting fins.

  In cabs or cabs such as hydraulic excavators, in order to eliminate the fogging and freezing of the window glass on the front side, left side, and right side of the cab main body, and to efficiently cool and heat the cab main body, A duct that guides the wind from the unit to the front side of the driver's seat is provided, a movable louver is provided at the upper outlet of the duct, and a movable louver is provided at the side outlet. By selectively switching the direction of the wind blown from the outlet toward the upper windshield, left side glass, right side glass, etc., the fog and freezing of each window glass are eliminated, and the wind is directed to the worker. There is an air-conditioning wind blowing device that can be comfortably performed by spraying (see, for example, Patent Document 1).

  As an improvement of this air-conditioning air blowing device, an air-conditioning air blowing device as shown in FIG. 9 has been proposed. In the air-conditioning air blowing device shown in FIG. 9, a container 2 such as a lunch box is disposed behind the operator seat 1, and an air conditioner unit 3 having a temperature adjusting function is disposed below the container 2. Two air-conditioning ducts (not shown) connected to the air-conditioning unit 3 are arranged on the right side of the operator seat 1 along the floor surface. The front window air-conditioning air outlet 7 and the right window air-conditioning air outlet 8 disposed between the front window 5 and the right window 6 are connected to each other. An air conditioning air outlet 9 for an operator arranged toward the seat 1 is connected, and the air conditioning air is supplied to the air conditioning air outlets 7, 8, 9 by these two air conditioning ducts.

The front window air-conditioning air outlet 7, the right window air-conditioning air outlet 8, and the operator air-conditioning air outlet 9 are provided at the end of a duct piped in the cover member 10. The conventional front window air-conditioning air outlet 7 has a rectangular shape and has a louver 7a for guiding the air-conditioning air blowing downward and upward.
Japanese Unexamined Patent Publication No. 7-47835 (first page, FIG. 1)

  Since the louver 7a of the front window air-conditioning air outlet 7 is fixedly installed, there is a problem that the air-conditioning air blowing direction cannot be adjusted. Furthermore, even if the movable louver is moved and the air-conditioning wind blowing direction can be adjusted as described in Patent Document 1, only the adjustment within a one-dimensional limited range can be performed. It has been difficult to properly realize a wide range of air-conditioning air blowing direction adjustment from the lower side to the upper side.

  This invention is made | formed in view of such a point, and it aims at providing the air-conditioning wind blowing apparatus which can implement | achieve a wide range air-conditioning wind blowing direction adjustment appropriately.

According to a first aspect of the present invention, there is provided a decorative cover that houses a wiper motor that drives a wiper provided in the front window, located at a corner between the front window and one side window in the cab of the work machine. the decorative cover is integrally molded in a duct portion having a circular air-conditioning air outlet portion for blowing out the conditioned air, and a rotatably-mounted round louvers in the air-conditioning air outlet section of the duct portion, the air-conditioning air outlet portion is open to the side for at least the front window in the duct portion, the round louver includes a circular frame body rotatably fitted in the said air-conditioning air blowing in the outlet portion, the angle to the frame body It is an air-conditioning wind blowing device provided with a wind direction adjusting fin provided so that the wind direction can be adjusted by adjustment, and provided so that the wind direction can be adjusted from the lower part to the upper part of the front window by turning .

According to a second aspect of the invention, the decorative cover in the air-conditioning air blowing out device according to claim 1 is obtained by including a monitor mounting portion of the monitor mount integrally formed on the upper side of the duct section.

According to the first aspect of the present invention, the round louver is located at the corner between the front window and the side window on one side in the operating room of the work machine and stores the wiper motor in the air-conditioning air outlet of the decorative cover. While adjusting the rotation of the frame relative to the frame, by adjusting the angle of the wind direction adjusting fin in the frame relative to the frame, a two-dimensional wide range extending from the lower part of the front window to the upper part and extending to the left and right of these parts. The air-conditioning air blowing direction adjustment can be appropriately realized , and the wind direction is adjusted so that the air-conditioning air hits a desired portion at the lower part or the upper part of the front window, so that fogging and freezing of the lower or upper window glass can be surely eliminated. Further, since the circular frame body of the round louver is rotatably fitted in the circular air-conditioning air outlet of the decorative cover, a complicated shaft support structure is not required and the structure can be simplified. Furthermore, by integrally forming a duct portion having an air-conditioning air outlet that is supplied with conditioned air to the decorative cover that houses the wiper motor, it is possible to save the trouble of assembling a separate duct to the decorative cover. The duct part can be compactly formed on the cover, and space can be saved.

According to the second aspect of the present invention, since the monitor mounting portion is integrally formed with the decorative cover that houses the wiper motor, the monitor can be easily and compactly mounted via the monitor mounting portion .

  Hereinafter, the present invention will be described in detail with reference to an embodiment shown in FIGS.

  As shown in FIG. 1, in a cab 12 as an operator's cab surrounding an operator seat 11 of a work machine such as a hydraulic excavator, the backrest portion 11 a of the operator seat 11 and the back portion of the head support portion 11 b are A container 13 such as a resin lunch box blown into the hollow is disposed, and an air conditioner unit 14 serving as an air conditioner main body having a temperature adjusting function is disposed below the container 13.

  As shown in FIG. 2 and FIG. 3, a plurality of square and circular air-conditioning air outlets 15 and 16 are provided on the upper surface of the container 13 installed on the back of the operator seat 11. That is, the container portion 13 is provided with a storage recess 18 that can be inserted when the backrest portion 11a and the head support portion 11b of the operator seat 11 are tilted into a frame plate 17 formed in a square frame shape. An upper end portion of a door plate 19 that can be folded in two is pivotally supported by a pin 20 so as to be freely opened and closed. The upper end portion of the door plate 19 is detachable from the pin 20 in an open state, and can be removed from the opening portion of the storage recess 18.

  As shown in FIG. 3, an electrical component replacement port 22 closed by a screwed cover 21 is formed in the front surface of one side of the frame plate 17, and the electrical component replacement port 22 has an inner side. As shown in FIGS. 1, 3 and 4, a circuit board 24 on which electric parts such as a fuse 23 f and a relay 23 r are mounted is attached by a support member 25. Therefore, by removing the cover 21 and opening the electrical component replacement port 22, electrical components such as the fuse 23f attached to the circuit board 24 can be replaced.

  As shown in FIG. 4, the conditioned air derivation unit 31 connected above the air conditioner unit 14 extends from the lower part on the back side of the container 13 to the plurality of conditioned air outlets 15, 16. A duct portion 32 that is integrally blow-molded is connected. An intermediate portion of the duct portion 32 is provided with a throttle portion 32a that once squeezes the duct passage at the central position of the container portion 13, and the upper side through the throttle portion 32a is enlarged over the entire width of the container portion 13. An enlarged portion 32b is provided. As shown in FIG. 3, the enlarged portion 32 b swells above the storage recess 18 of the container portion 13 and is connected to the plurality of air-conditioning air outlet portions 15 and 16.

  Of the plurality of air-conditioning air outlets 15 and 16 that receive the supply of the air-conditioned air whose temperature is adjusted through the duct portion 32, the two air-conditioning air outlets 15 near the center are formed in a square shape, and these air-conditioning air outlets 15 is provided with an overall louver 33 capable of circulatingly supplying conditioned air to the entire cab 12 as a rear louver for setting the blowing direction of the conditioned air, that is, a rear vent louver.

  On the other hand, the two air-conditioning air outlets 16 at both left and right ends are formed in a circular shape so as to have an opening surface inclined forward by setting an angle so as to rise slightly forward, As a rear louver that sets the blowing direction of conditioned air, that is, a rear vent louver, a local louver 34 capable of supplying conditioned air from the back toward at least the operator sitting on the operator seat 11 rotates in any direction. It is provided to be movable.

  As shown in FIG. 5A, the local louver 34 has a circular frame 36 formed in a circular shape as shown in FIG. 5 (b) and 5 (c), a plurality of wind direction adjusting fins 37 are pivotally supported so that the wind direction can be adjusted by adjusting the angle, and each of the wind direction adjusting fins 37 is connected to each of the wind direction adjusting fins 37. The wind direction adjusting fins 37 are round louvers that are interlocked so as to always maintain parallelism.

  Since each of these wind direction adjusting fins 37 is formed in a shape that becomes a disk that is in close contact with the inner peripheral surface of the frame body 36 in the fully closed state, the operation member 38 rotates these wind direction adjusting fins 37. As shown in FIG. 5 (c), it is possible to close the inside of the frame 36 in a fully closed state and adjust the opening angle of each wind direction adjusting fin 37 as shown in FIG. 5 (b). However, it is possible to adjust the wind direction in an arbitrary direction by adjusting the angle in the longitudinal direction of each wind direction adjusting fin 37 by rotating the frame body 36 in the circumferential direction.

  As shown in FIG. 4, since the air-conditioning unit 14 has two air-conditioning air supply ports 40a and 40b on the side surface, a common cover-shaped air-conditioning air is provided so as to cover these air-conditioning air supply ports 40a and 40b. A lead-out portion 40 is connected to the side of the air-conditioning unit 14, and a single resin-made air-conditioning duct 41 blow-molded integrally with the air-conditioning air lead-out portion 40 is provided on the right side of the operator seat 11 along the floor surface. As shown in FIG. 6, the conditioned air derivation section 42 connected to the front of the air conditioner unit 14 as shown in FIG. 6 is provided with an conditioned air blow-out installed below the operator seat 11 as shown in FIG. Connected to box 43.

  As shown in FIGS. 4 and 6, a resin wiper motor decorative cover as a shell having a plurality of air-conditioning air outlets for blowing the air-conditioning air supplied from the air-conditioning unit 14 at the tip of the air-conditioning duct 41. 44 (hereinafter simply referred to as “decorative cover”) is connected. As shown in FIG. 1, the decorative cover 44 is disposed at a corner between the front window 45 and the right window 46 as one side window in the cab 12, and a wiper provided on the front window 45. The wiper motor for driving 47 and the link mechanism (both not shown) are covered.

  As shown in FIGS. 7 (a) and 7 (b), the decorative cover 44 is integrally blow-molded with a duct portion 51 to which air-conditioned air whose temperature is adjusted from the air conditioner unit 14 is supplied. As shown in FIG. 4, adjacent to the rear side of the duct portion 51, a wiper motor / link storage portion 52 for storing the wiper motor and the link mechanism is integrally formed in a concave shape, and is formed at the edge of the wiper motor / link storage portion 52. A mounting plate portion 53 fixed to a member on the cab 12 side is integrally formed, and a monitor mounting portion 54 is integrally formed on the upper side of the duct portion 51. A monitor base storage recess is formed on a side surface of the monitor mounting portion 54. 55 and a monitor mounting screw 56 are provided.

  Then, as shown in FIG. 2, the mounting base 58 of the monitor 57 is fitted to the monitor mounting portion 54 of the decorative cover 44, and the mounting base 58 of the monitor 57 is fixed by the monitor mounting screw 56. Further, the mounting plate portion 53 of the decorative cover 44 is fixed to the member 59 on the cab 12 side with a bolt 60.

  The duct part 51 integrally blow-molded with the decorative cover 44 is connected to the air conditioning duct 41 and has a hollow body part 62 on the lower end connection port part 61 that receives the supply of conditioned air from the air conditioner unit 14. A U-shaped neck portion 63 is continuously provided on the upper side of the body portion 62. As shown in FIG. 7A, the left side surface of the body portion 62 is used as a circular air-conditioning air outlet portion. The air-conditioning air outlet 64 is opened, and as shown in FIG. 7B, the right window air-conditioning air outlet 65 serving as a rectangular air-conditioning air outlet extending in the vertical direction is opened on the right side of the neck 63. An operator air-conditioning air outlet 66 serving as a cylindrical air-conditioning air outlet is opened at the upper end surface of 63.

  As shown in FIG. 7 (a), a drink holder fitting groove 71 is provided from the body portion 62 to the neck portion 63. The drink holder fitting groove 71 and a plurality of locations on the opposite side are provided with protrusions for locking the drink holder. Since the portion 72 is provided in a protruding manner, the drink holder forming member 73 fitted from the body portion 62 to the inside of the neck portion 63 as shown in FIG. A louver mounting plate portion 74 continuously disposed below the monitor 57 is integrally formed on the upper portion of the drink holder forming member 73, and a drink holder 75 is integrally formed on the lower portion.

  As shown in FIG. 7, the air-conditioning air outlets 64 for the front window air-conditioning air outlet 64, the right-window air-conditioning air outlet 65, and the operator-use air-conditioning air outlet 66 that are integrally formed with the decorative cover 44. As shown in FIG. 1, louvers having fins that can open and close these air-conditioned air outlets are provided.

  That is, a front window louver 77 as a round louver is attached to a front window air-conditioning air outlet part 64 formed in a circular shape in the body part 62 of the duct part 51 so as to be openable and closable to constitute a front window defroster. In addition, the right window air-conditioning air outlet 65 formed in the neck 63 with a vertically long square has a general rectangular right window that adjusts the air-conditioning wind blown to the right window 46 in the vertical and horizontal directions. A right window defroster is configured by opening and closing a louver (not shown) for opening and closing.

  Further, the opening of the cylindrical air conditioning air outlet 66 for the operator that protrudes from the front end surface portion of the neck 63 has a louver mounting plate 74 of the drink holder forming member 73 that is continuously located below the monitor 57. An operator louver 78 mounted in the mounting hole so as to be openable and closable is disposed opposite to the operator seat 11, and the operator louver 78 air-conditions the front face of the operator sitting on the operator seat 11 obliquely from the front. The wind can be supplied.

  The front window louver 77 and the operator louver 78 are the round louvers shown in FIG. 5, similar to the local louver 34 on the container 13 described above, and the air conditioning air outlet for the front window of the decorative cover 44. As shown in FIG. 5 (a), a frame 36 formed in a circle as shown in FIG. 5 (a) is rotatably fitted in 64 or in the mounting hole of the louver mounting plate 74, and FIG. ) As shown in (c), a plurality of wind direction adjusting fins 37 are pivotally supported so that the wind direction can be adjusted by adjusting the angle, and each wind direction adjusting fin 37 is always parallel by the operation member 38 connected to each of these wind direction adjusting fins 37. It is interlocked to maintain

  Since each of these wind direction adjusting fins 37 is formed in a shape that becomes a disk that is in close contact with the inner peripheral surface of the frame body 36 in the fully closed state, the operation member 38 rotates these wind direction adjusting fins 37. As shown in FIG. 5 (c), it is possible to close the inside of the frame 36 in a fully closed state and adjust the opening angle of each wind direction adjusting fin 37 as shown in FIG. 5 (b). On the other hand, by adjusting the angle of the longitudinal direction of each wind direction adjusting fin 37 by rotating the frame body 36 in the circumferential direction, the front window louver 77 extends in the vertical direction and the horizontal direction extending from the lower part to the upper part of the front window 45. The wind direction can be adjusted, and the operator louver 78 can adjust the wind direction in the vertical and horizontal directions of the operator.

  The right window air-conditioning air outlet 65 can be closed to a fully closed state by at least a rectangular right window louver (not shown).

  Next, the function and effect of this embodiment will be described.

  When the window glass of the lower part 45a of the front window 45 shown in FIG. 8 (a) is clouded, the front window louver 77 is located in the front cover air conditioning air outlet 64 of the decorative cover 44 as shown in FIG. As shown in FIG. 8B, the frame 36 is rotated in the circumferential direction while adjusting the opening angle of each wind direction adjusting fin 37, and the angle of each wind direction adjusting fin 37 is shown in FIG. In such a manner, the wind direction is adjusted so that the conditioned air hits the lower part 45a of the front window 45, and the fogging and freezing of the window glass of the lower part 45a are eliminated.

  On the other hand, when the window glass of the upper portion 45b of the front window 45 shown in FIG. 8 (b) is clouded, the front window louver 77 is in contact with the air conditioning air outlet 64 for the front window of the decorative cover 44. As shown in FIG. 5B, the frame body 36 is rotated and adjusted in the circumferential direction while adjusting the opening angle of each wind direction adjusting fin 37, and the angle of each wind direction adjusting fin 37 is adjusted as shown in FIG. As shown in FIG. 6, the wind direction is adjusted so that the conditioned air hits the upper portion 45b of the front window 45, and the fogging and freezing of the window glass of the upper portion 45b are eliminated.

  In this way, the front window louver 77 adjusts the frame 36 in the circumferential direction relative to the front window air-conditioning air outlet 64 of the decorative cover 44, while rotating the frame 36 in the circumferential direction. By adjusting the angle of the wind direction adjusting fin 37, the decorative cover 44 located at the corner between the front window 45 and the right window 46 in the cab 12 of the work machine extends from the lower part 45a to the upper part 45b of the front window 45. In addition, two-dimensional wide-range air conditioning wind blowing direction adjustment over the left and right of each of these parts can be appropriately realized, and the wind direction is adjusted so that the air conditioning wind hits the desired part of the lower part 45a or the upper part 45b of the front window 45, The fogging and freezing of the window glass of the lower part 45a or the upper part 45b can be surely eliminated.

  Further, since the circular frame 36 is rotatably fitted in the circular front window air-conditioning air outlet 64 of the decorative cover 44, a complicated shaft support structure is not required and the structure can be simplified.

  Further, as shown in FIG. 5 (c), the front window louver 77 is closed by operating the air direction adjusting fins 37 so as to be in close contact with each other or the frame body 36, whereby the front window air conditioning air outlet 64 is provided. In the same manner, the operator louver 78 can also close the opening of the air conditioning air outlet 66 for the operator in the fully closed state, and the air conditioning air outlet 65 for the right window is also square. The right window louver (not shown) can be closed in a fully closed state. Therefore, even when the air conditioner unit 14 and the duct portion 51 of the decorative cover 44 are connected by a single air conditioning duct 41, the decorative cover 44 Open the wind direction adjusting fins 37 of the front window louver 77, the right window louver (not shown), and the operator louver 78 provided in each of the plurality of air conditioning air outlets 64, 65, 66 of the duct 51. By setting it to the closed or closed state, Can be selectively used any needed for air-conditioning air outlet portion 64, 65 and 66.

  In particular, by opening the front window louver 77 and the right window louver (not shown) and closing the operator louver 78, it is possible to quickly eliminate the fogging and freezing of the glass of the front window 45 and the right window 46, By closing the front window louver 77 and the right window louver and opening the operator louver 78, sufficient conditioned air required immediately by the operator sitting on the operator seat 11 in the cab can be secured.

  In addition, a single air-conditioning duct 41 is provided without separately providing a window air-conditioning duct and an operator air-conditioning duct as in the prior art, so that two or more air-conditioning ducts are selectively used. The simultaneous use of the conditioned air supply ports 40a and 40b can increase the maximum conditioned air volume and reduce the installation space, and further reduce the total area where the air conditioning duct 41 contacts the conditioned air. The heat dissipation can be reduced to improve the thermal efficiency.

  In addition, a duct part 51 having an air-conditioning air outlet 64, 65, 66 to which conditioned air is supplied from the air-conditioning unit 14 is integrally formed with the decorative cover 44 for storing the wiper motor, whereby a separate duct part is provided on the decorative cover 44. Can be saved, and the duct portion 51 can be compactly formed on the decorative cover 44, thereby saving space.

  Furthermore, since the monitor mounting portion 54 is integrally formed with the decorative cover 44 that houses the wiper motor, the monitor 57 can be easily and compactly mounted via the monitor mounting portion 54.

  In addition, air-conditioning air blowing on the upper surface of the container 13 from the lower part on the back side of the container 13 that receives the supply of air-conditioned air adjusted in temperature from the air-conditioning unit 14 below the container 13 located behind the operator seat 11. By integrally forming the duct part 32 on the back side of the container part 13 over the outlet parts 15 and 16, it is possible to save the trouble of assembling the duct part 32 to the container part 13, and the duct on the back side of the container part 13 The portion 32 can be compactly formed, and space can be saved.

  The air conditioner blown out toward the upper part of the cab 12 from the overall louver 33 provided at each of the two air-conditioning air outlets 15 near the center of the upper surface of the storage case 13 installed in the rear part of the operator seat 11. Since the wind flows along the ceiling surface in the cab 12 toward the front window 45, and further descends along the front window 45 and then circulates backward, it is mainly useful for air conditioning in the entire cab 12.

  On the other hand, the local louvers 34 on both the left and right sides respectively provided on the left and right air conditioning air outlets 16 of the top surface of the container 13 installed in the back of the operator seat 11 are connected to the air conditioning air outlet 16 of the container 13. On the other hand, by rotating the circular frame 36 shown in FIG. 5 in the circumferential direction and adjusting the angle of the wind direction adjusting fins 37 in the frame 36 with respect to the frame 36, a two-dimensional wide range. The air-conditioning wind blowing direction can be adjusted.

  For example, when supplying conditioned air from the operator's louver 78 to the operator obliquely from the front, the local louver 34 passes through the left and right side portions of the backrest portion 11a of the operator seat 11 and the head receiving portion 11b. Since the conditioned air can be supplied to the operator from behind, sufficient conditioned air can be directly supplied to the operator in the cab 12.

  Alternatively, the local louvers 34 on both the left and right sides of the circular frame body 36 shown in FIG. By adjusting the angle of the wind direction adjusting fins 37 in the body 36 to the left and right sides or the rear, respectively, the conditioned air adjusted by the wind direction adjusting fins 37 is supplied to the left window and the right window 46 or the rear window of the cab (see FIG. (Not shown) can also be directly supplied, and the fogging and freezing of these window glasses can be quickly eliminated.

It is a perspective view in the cab for working machines provided with one Embodiment of the air-conditioning wind blowing apparatus which concerns on this invention. It is the perspective view which looked at the inside of a cab same as the above from the other side. It is the perspective view which looked at the rear part in a cab same as the above from the front side. It is a perspective view which shows piping with respect to the air-conditioning wind blowing apparatus in a cab same as the above from one side. (A) is a top view which shows the round louver of an air-conditioning wind blowing apparatus same as the above, (b) is sectional drawing which shows the fin angle adjustment state, (c) is sectional drawing which shows the fin fully closed state. It is a perspective view which shows the piping with respect to the air-conditioning wind blowing apparatus in a cab same as the above from the other side. (A) is the perspective view which looked at the shell of the air-conditioning wind blowing apparatus same as the above from the one side, (b) is the perspective view seen from the other side. (A) is a perspective view inside the cab when the round louver of the air-conditioning wind blowing device is adjusted toward the lower part of the front window, and (b) is an adjustment with the disk-shaped louver facing the upper part of the front window. It is a perspective view in the cab at the time of being carried out. It is a perspective view in the cab for work machines provided with the conventional air-conditioning wind blowing apparatus.

Explanation of symbols

12 Cab as cab
36 frame
37 Wind direction adjustment fin
44 of粧cover
45 Front window
46 Right window as side window
47 Wiper
51 Duct section
54 Monitor mounting section
64 Air-conditioning air outlet for front window as air-conditioning air outlet
77 Front window louver as a round louver

Claims (2)

A decorative cover for storing a wiper motor that drives a wiper provided on the front window, located at a corner between the front window and the side window on one side in the operating room of the work machine;
A duct portion having a circular air-conditioning air outlet that blows out air-conditioning air integrally formed with the decorative cover ,
A round louver rotatably mounted in the air-conditioning air outlet of the duct ,
The air-conditioning air outlet is opened on at least a side surface of the duct portion with respect to the front window,
The above round louver is
A circular frame which is rotatably fitted in the air-conditioning air blowing in the outlet portion,
A wind direction adjusting fin provided in the frame body so that the wind direction can be adjusted by adjusting the angle , and
An air-conditioning air blowing device, characterized in that it is provided so that the air direction can be adjusted from the lower part to the upper part of the front window by turning . Cosmetic cover
Monitor mounting part for monitor mounting integrally formed on the upper side of the duct part
The air-conditioning wind blowing device according to claim 1 , comprising:

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