JPH11198649A - Cab for construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a lustrous feeling by providing a moving window slidable by being guided by a first seal member having a part to be internally installed in an almost U-shaped window frame having one side opening along the outer periphery of the window hole part, and fixedly arranging a fixed window by a second seal member fitted to/installed on the outside edge by covering a part of a window hole and the window frame. SOLUTION: A moving window 20 slidable by being guided by a first seal member 33 having at least a part to be internally installed, is provided in an almost U-shaped window frame 14 (a sash frame 31) having one side opening along the outer periphery of the window hole part bored in an outer wall of a door 12 of a cab 11 to be adhered/fixed to a second seal member 40 fitted to/installed in a flange plate edge part to constitute the outside end part of the window frame 14 so that a fixing window is fixedly arranged by covering a part of the window hole part and a part of the window frame 14. A third seal member is installed in the window frame 14 of the part uncovered with the fixing window. The end part of a fixed window 22 and the edge part of the third seal member become a continuous image, so that an external appearance image having a united feeling can be obtained as the whole window.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cab having a window that can be opened and closed, such as a hydraulic shovel or a crane, for a construction machine.

[0002]

2. Description of the Related Art FIG. 11 is a sectional view of a main part of a sliding window frame structure of a construction machine cabin described in Japanese Patent Application Laid-Open No. 8-31930. In a window frame structure according to one embodiment of the prior art shown in FIG. 11, a window frame 9 having a Y-shaped cross section and a run channel 10 inserted inside the window frame 9 are provided.
And a rubber member 1 interposed between the window frame 9 and the opening edge of the cabin 4. The innocent book 1 has a U-shaped recess 15 holding the rear and outer surfaces of the window frame 9. And a cross-sectional shape having a deep groove-shaped slit 16 and a receiving seat 3 located behind the concave portion 15.
The window frame 9 is inserted into the recess 15, the flange 7 at the opening edge of the cabin is inserted into the slit 16, and the window frame 19 is held with the receiving seat 3 seated on the receiving surface 8 at the opening edge of the cabin. I have to. Further, the rubber material 1 has a substantially S-shaped basic cross-sectional shape in which the concave portion 15 and the slit 16 are arranged side by side in the opposite direction, and a water sealing rib extending from the outdoor end of the basic cross-sectional shape to the opposite concave side. 2 is formed in a cross-sectional shape. In addition, 5 is an inner panel and 6 is an outer panel.

FIG. 12 shows an example of a hydraulic shovel to which a cab having a sliding window structure as shown in FIG. 11 is applied.
Moving windows 20'a and 20'b are arranged in window holes 13 'provided in the door 12' of the cab 11 'of the hydraulic excavator, and the moving windows 20'a and 20'b are indicated by arrows A and B, respectively.
The window can be set in an open state and a closed state. Cab 11 'of hydraulic excavator in FIG.
Is relatively square in side view, the upper and lower edges of the window hole 13 'are parallel to each other, and the moving windows 20'a, 20'b
Can be moved, and the glass surface can be made large in the vertical direction.

FIG. 13 shows another conventional example of a cab whose side view is based on an arc shape. The cab 11 "is provided with a moving window 20" and a fixed window 22 ".
2 "is formed in an arc shape in accordance with the arc-shaped cab 11", so that a large glass surface can be obtained. The moving window 20 ″ is movable in the vertical direction in order to maintain an aesthetic appearance.

[0004]

In recent years, many cabs of construction machines often use an arc shape in a side view in order to give a soft visual impression to the periphery. When a sliding window in the front-rear direction as shown in FIG. 11 is applied to such a cab that uses a large number of arcs in a side view, a window frame that is vertically parallel to the external appearance of the arc-shaped cab appears. It does not match well and spoils aesthetics. In recent years, in cabs of construction machinery, a design with a high glossiness using a lot of glass surfaces is sometimes desired. However, when a sliding window as shown in FIG. It was difficult to cover the vicinity of the upper center with a glass surface, and glossiness could not be obtained.

In the window frame structure shown in FIG. 11, a run channel 10 is fitted inside a window frame 9 (for a sliding window) having a Y-shaped cross section, but separately from the run channel 10. The rubber material 1 is interposed between the outer peripheral edge of the window frame 9 and the opening edge of the cabin 4. Therefore, since the window frame 9 is not securely fixed to the cabin 4, the window glass is likely to vibrate when the construction machine is running or working, and the window glass is deformed in the window frame 9. This may adversely affect the sliding movement of the window glass.

SUMMARY OF THE INVENTION The present invention provides a glossy cab that uses a large number of arc surfaces in a side view, has an openable window that matches the shape of the arc shape, and uses many glass surfaces.

[0007]

A window hole formed in the outer wall of the cab, a substantially U-shaped window frame formed along the outer periphery of the window hole and having one opening, A first sealing member at least partially embedded in a frame;
A movable window slidably guided by a seal member, a second seal member fitted to an outer edge of the window frame, and a second seal member adhered and fixed to the second seal member; A fixed window is provided so as to cover a part and a part of the window frame.

[0008] Due to the configuration of the window of the cab, when the window is closed, the moving window is located in a range of a portion where the window frame is not covered by the fixed window. When the window is open, the movable window is located on the back side of the fixed window. According to this, the shape of the fixed window can be determined regardless of the shape of the window hole, it is possible to obtain a window that matches the cab that uses a lot of arc shapes, and it is also possible to take a large glass surface around the cab It is.

[0009] Furthermore, a third seal member is fitted to an outer edge of a portion of the window frame that is not covered by the fixed window, and the third seal member is fixed to the window frame from the outer edge of the window frame. The lip has a lip extending to substantially the same position as the edge of the window.

When the fixed window is made larger than the window hole or the window frame, the moving window located in the window frame becomes smaller than the fixed window, and the edge of the fixed window and the moving window become discontinuous. According to the present invention, since the third seal member extends to near the edge of the fixed window, the image of the edge of the fixed window and the edge of the third seal member are continuous, so that the entire window is provided. As a result, an appearance image having a sense of unity can be obtained.

Furthermore, the first seal member and the second seal member
When the seal member or the first seal member and the third seal member are integrally formed, the number of parts of the seal member can be reduced, so that the productivity can be improved, and the rubber or the like constituting the seal member can be used. When contracted due to aging, there is no gap between the sealing members, and the sealing performance can be maintained.

Furthermore, the first sealing member and the second sealing member
When the seal member and the third seal member are integrally formed, the above-described operation can be more remarkably obtained.

Further, the first sealing member has a groove formed on the back surface at a position facing the edge of the moving window, and a hard rod-shaped or linear gap adjusting member is fitted into the groove. It was made to be.

[0014] According to this, the distance between the facing edge of the moving window and the groove is adjusted, and the holding force of the first seal member in the window frame on the moving window is appropriate. It is set to a value, and the sliding movement of the moving window can be performed smoothly.

Further, a plurality of types of the gap adjusting members having different diameters are set, and the gap adjusting members can be selectively replaced in accordance with play when the moving window moves. According to this, if the movement of the moving window is stiff when it is slid, the small-diameter gap adjusting member is selected and replaced. Since the gap increases and the vertical play of the moving window is in an appropriate state, the sliding movement of the moving window can be made smooth. Also, when the moving window is slid, the play in the vertical direction is in an appropriate state, so that the sliding movement of the moving window can be smooth. If the play in the vertical direction is large when the moving window is slid, the play can be adjusted and set to an appropriate state by selecting and replacing the large-diameter gap adjustment member. it can.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of a cab 11 according to one embodiment of the present invention. In the drawing, reference numeral 12 denotes a door of a driver's entrance of the cab 11, 13 denotes a window hole above the door 12, 14 denotes a window frame, 20 denotes a moving window, and 21 denotes a handle provided on the inner side of the moving window 20. Reference numeral 22 denotes a fixed window. FIG. 2 is a cross-sectional view of a main part showing the window 23 of the first embodiment of the cab 11 of the present invention viewed from AA in FIG. 1 (the cross-section is not hatched for easy understanding). It is. In the figure, 24 is the cab 11
An inner panel (referred to as a cab 11 for ease of explanation, which will be referred to as a cab 11 in detail), an outer panel 25, and a roller 26 provided on a front window 27 in front of the cab 11 are guided. It is a guide rail.

FIG. 3 is an enlarged view of a portion B in FIG. In the figure, 29 is a flange plate edge of the inner panel 24 forming the window frame 14, 30 is a flange plate edge of the outer panel 25 similarly forming the outer edge of the window frame 14, and 31 is a window frame 14 similarly.
A sash frame having a substantially U-shaped cross section,
1 is an inner vertical frame portion, and 33 is a window frame 14 (sash frame 31).
A first sealing member, at least a part of which is internally provided,
Reference numeral 35 denotes each lip abutting on the inner surface and the outer surface of the moving window 20, reference numeral 36 denotes a top of the bottom of the first seal member 33 projecting in a convex shape, reference numeral 37 denotes a slit, reference numeral 38 denotes a flexible lip, reference numeral 39
a, 39b and 39c are lip 34 and lip 3, respectively.
5, a flocked member 40 fixed to a contact portion of the top portion 36 with the moving window 20, 40 is fixed to the inner surface of the fixed window 22 and fitted to the flange plate edge portion 30 which is the outer edge of the window frame 14. The second sealing member, 41 is the second sealing member 40
Is a flexible lip, 43 is a lip that contacts the moving window 20, and 44 is a flocked member. FIG. 4 is a view showing a state where the fixed window 22 in FIG. 2 is removed.

FIG. 5 shows a window 23 viewed from the outside of the cab 11.
FIG. In the figure, 45 is a flange plate edge 3
No. 3 fitted to a portion not covered by the fixed window 22
Seal part. 57 is an edge 46 of the fixed window 22 (fixed window 22
(Fourth sealing member) fitted to a curved oblique edge portion extending from the rear end edge portion A to the lower end edge portion B). FIG. 6 is a cross-sectional view of the third seal member 45 taken along line CC in FIG. FIG. 7 shows the fourth seal member 57 viewed from the line DD in FIG.
FIG. In the figure, reference numerals 47a and 47b denote lips which contact the moving window 20, respectively, and 48a and 48
b is a flocked member fixed to the lips 47a and 47b, respectively.

Next, the structure and operation of the window 23 of the first embodiment in the cab 11 of one embodiment of the present invention will be described with reference to FIGS.
Referring to FIG. In the present embodiment, a window hole 13 formed in the outer wall of the cab 11 and a substantially U-shaped window frame 14 (sash frame 31) formed along the outer periphery of the window hole 13 and having one opened. (Shown in FIG. 3), a first seal member 33 at least partially housed in the sash frame 31, a movable window 20 slidably guided by the first seal member 33, and the window A second seal member 40 fitted to an edge of a flange plate forming an outer end of the frame 14,
The fixed window 22 is fixed to the second seal member 40 by adhesion and fixedly covers a part of the window hole 13 and a part of the window frame 14.

Although not shown, the window frame 14 does not necessarily need to be formed in a substantially U shape over the entire circumference of the window hole 13. For example, the front side of the hole 13 may not be U-shaped depending on the amount of movement of the moving window 20.

Due to the configuration of the window 23 of the cab 11, when the window 23 is closed, the moving window 20 is positioned in a range where the window hole 13 is not covered by the fixed window 22. doing. Accordingly, when the window 23 of the cab 11 is opened, the moving window 20 is slid toward the area where the window hole portion 13 is covered by the fixed window 22 so that the window 23 is moved.
Can be opened.

Further, only the moving window 20 is slidably fitted to the window frame 14 (sash frame 31),
The fixed window 22 is connected to the window frame 14 (the flange plate edge 3).
0), by being adhesively fixed to the second seal member 40 fitted to the outer end of the cab 11, the arc shape matching the design of the cab 11 in which the arc shape is frequently used irrespective of the shape of the window frame. The window 23 having an outer shape can be formed, and the structure of the window can be simplified to provide the window 23 which is inexpensive and has good maintainability.

A third sealing member 45 (shown in FIGS. 5 and 7) fitted to the window frame 14 (flange plate edge 30) at a portion not covered by the fixed window 22 is provided. The sealing member 45 is formed to extend from the outer edge of the flange plate edge 30 to a position substantially equal to the position of the edge 46 of the fixed window 22. As a result, the third sealing member 45 is extended to near the edge 46 of the fixed window 22, so that the end 46 of the fixed window 22 and the edge of the third sealing member 45 become a continuous image, and the entire window becomes Thus, an appearance image having a sense of unity can be obtained. When the second seal member 40 also extends to the vicinity of the end 46 of the fixed window 22 (the third seal member and the second seal member have substantially the same cross-sectional shape),
Although the size of the seal member is increased, there is an advantage that the second seal member and the third seal member can be formed by the same mold.

The lip 47a, 47 provided on the fourth seal member 57 is fitted by the fitting of the fourth seal member 57.
With b, it is possible to prevent intrusion of external dust, rainwater, and the like that may enter from between the moving window 20 and the fixed window 22.

The first seal member 33 and the second seal member 40 or the first seal member 33 and the third
The seal member 45 is formed integrally. As a result, the number of parts of the seal member can be reduced, so that the productivity can be improved. Further, when the rubber or the like constituting the seal member contracts due to aging, there is no gap between the seal members, and the sealability is improved. Can be maintained.

The first seal member 33, the second seal member 40, and the third seal member 45 are integrally formed. This makes it possible to reduce the number of parts by using the first, second, and third seal members (33, 40, 45) as a single seal member, and at the time of the fitting operation of the first seal member 33, to the second seal member. Seal member 4
The zero and third seal members 45 can be easily located at required fitting positions.

FIG. 8 is a sectional view of a main part showing a first sealing member 49 of another example in the window 23 of the first embodiment. The first sealing member 49 shown in FIG. 8 has a groove 50 continuously formed in the longitudinal direction of the first sealing member 49 on the back surface at a position facing the edge of the moving window 20.
A hard or rod-shaped or linear gap adjusting member 51 (the material is a hard material such as a synthetic resin or a steel cord) is fitted in the gap adjusting member 51. Thereby, the gap (the gap size is S) between the facing surface of the edge of the moving window 20 and the groove 50 (specifically, the top surface c in the groove 50) is adjusted, and the sash frame 31 is adjusted. The first sealing member 4
9 to the moving window 20 (for example, the first
The moving window 2 of the lip formed on the sealing member 49
0) is set to an appropriate value, and the sliding movement of the moving window 20 can be performed smoothly.

The gap adjusting member 51 has a diameter φ.
A plurality of types having different d values are set, and can be selectively replaced according to the play at the time of moving the moving window 20. Thus, if the movement of the moving window 20 is difficult when sliding, the small-diameter gap adjusting member (51) is selected and replaced. Since the gap (gap dimension S) increases and the play of the moving window 20 in the vertical direction is in an appropriate state, the sliding movement of the moving window 20 can be made smooth. If there is a large amount of play in the vertical direction when the moving window 20 is slid, the large-diameter gap adjusting member (51) is selected and replaced to adjust the play to an appropriate state. Can be set.

Next, FIG. 9 is a sectional view of a main part showing a window 52 of a second embodiment of a cab 11a of the present invention (the entire cab 11a is not shown). In the figure,
13a is a window hole of the cab 11a, 14a is a window frame, 24a
Is the inner panel of the cab 11a, 25a is the outer panel, 29a
Is a flange plate edge of the inner panel 24a constituting the window frame 14a, and 30a is an outer panel 25 similarly constituting the window frame 14a.
a, the reference numeral 31a designates a window frame having a substantially U-shaped cross section which similarly constitutes the window frame 14a; 53, a vertical plate frame portion outside the sash frame 31a; 33a, U of the window frame 14a (sash frame 31a); A first seal member fitted inside the letter shape, 20a
Is a movable window, 40a is a second seal member mounted and fixed on the inner surface of the fixed window 22a, 41a is a deep groove-shaped slit formed in the second seal member 40a, and 42a is a flexible lip. FIG. 10 is an enlarged view showing a free state of the second seal member 40a in FIG. In the window 52 of the second embodiment, the second seal member 40a mounted and fixed to the inner surface of the fixed window 22a has a simple semi-circular cross-sectional shape,
The slit 41a of the second seal member 40a is fitted into the flange plate edge portion 30a of the outer panel 25a and the outer vertical plate frame portion 53 of the sash frame 31a. Therefore, the window 52 can be manufactured small and inexpensively.

[0030]

According to the first aspect of the present invention, the shape of the fixed window can be determined irrespective of the shape of the window hole portion, and a window matching a cab having a large number of arc shapes can be obtained. It is also possible to make the outer glass surface large.

According to the second aspect of the present invention, since the third seal member extends to near the edge of the fixed window, the edge of the fixed window and the edge of the third seal member are continuous. Because it is an image, the appearance image with a sense of unity can be obtained for the entire window.

According to the third aspect of the present invention, since the number of parts of the seal member can be reduced, the productivity can be improved, and the management of the seal member and the fitting operation of the seal member can be easily performed. When the rubber or the like constituting the seal member contracts due to aging, there is no gap between the seal members, and the sealing performance can be maintained. Further, according to the invention described in claim 4, this effect can be more remarkably obtained.

According to the fifth aspect of the present invention, the gap between the end surface of the moving window and the facing surface of the groove is adjusted, and the first sealing member in the window frame with respect to the moving window. The holding force is set to an appropriate value, and the sliding movement of the moving window can be performed smoothly.

According to the sixth aspect of the present invention, if the movement of the moving window is difficult when sliding, the small-diameter gap adjusting member is selected and replaced.
Since the gap increases and the vertical play of the moving window is in an appropriate state, the sliding movement of the moving window can be made smooth. Also, when the moving window is slid, the play in the vertical direction is in an appropriate state, so that the sliding movement of the moving window can be smooth. If the play in the vertical direction is large when the moving window is slid, the play can be adjusted and set to an appropriate state by selecting and replacing the large-diameter gap adjustment member. it can.

[Brief description of the drawings]

FIG. 1 is a side view of a cab according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part showing a window of the first embodiment of the cab of the present invention as viewed from AA in FIG.

FIG. 3 is an enlarged view of a portion B in FIG. 2;

FIG. 4 is a view showing a state where a fixed window in FIG. 2 is removed.

FIG. 5 is a view showing a window as viewed from the outside of the cab of the present invention.

FIG. 6 is a cross-sectional view taken along line CC of FIG. 5;

FIG. 7 is a sectional view taken along line DD in FIG. 5;

FIG. 8 is a sectional view of a main part showing a first seal member of another example in the window of the first embodiment.

FIG. 9 is a sectional view of a main part showing a window of a cab according to a second embodiment of the present invention.

FIG. 10 is an enlarged view showing a free state of a second seal member in FIG. 9;

FIG. 11 is a sectional view of a main part of a sliding window frame structure according to an embodiment of the prior art.

FIG. 12 is a diagram showing a hydraulic shovel to which a cab having a sliding window structure according to the related art is applied.

FIG. 13 is an example of a cab based on a circular arc shape in a side view of a conventional technique.

[Explanation of symbols]

4,11,11 ', 11 "Cab (cabin) 14,14a Window frame 9,31,31a, 31b Sash frame 13,13a Window hole 16,37,41,41a Slit 20,20a Moving window 22,22a Fixed Windows 23, 23 ′, 52, 54 Windows 29, 29 a, 30, 30 a Flange plate edge 32 Inner vertical frame 33, 33 a, 49 First seal member 34, 35, 43, 47 a, 47 b Lip 38, 42 , 42a Flexible lip 39a, 39b, 39c, 44, 48a, 48b Flocked member 40, 40a Second seal member 45 Third seal member 46 Edge 51 Gap adjusting member 53 Outside vertical plate frame

Claims (6)

[Claims] 1. A window hole formed in an outer wall of a cab, a substantially U-shaped window frame formed along an outer periphery of the window hole and having one opened, and at least one window frame formed in the window frame. A first seal member in which a portion is provided, a movable window that is slidably guided by the first seal member, a second seal member fitted to an outer edge of the window frame, A cab for a construction machine, comprising: a fixed window that is adhered and fixed to a seal member and fixedly covers a part of the window hole and a part of the window frame. And a third seal member fitted to an outer edge of a portion of the window frame that is not covered by the fixed window, wherein the third seal member is fixed from an outer edge of the window frame to the fixed portion. 2. The cab for a construction machine according to claim 1, further comprising a lip portion extending to a position substantially equal to a position of an edge of the window. 3. The first seal member and the second seal member, or the first seal member and the third seal member are formed integrally with each other.
The cab for a construction machine as described. 4. The cab for a construction machine according to claim 1, wherein said first seal member, said second seal member, and said third seal member are integrally formed. 5. The first sealing member has a groove formed on a back surface at a position facing an edge of the moving window, and a hard rod-shaped or linear gap adjusting member is fitted into the groove. The cab for a construction machine according to any one of claims 1 to 3, wherein 6. The gap adjusting member according to claim 4, wherein a plurality of types having different diameters are set, and the gap adjusting member can be selectively replaced in accordance with play when the moving window moves. Cab for construction equipment.