JP2002364022A - Cabin window structure of construction machinery, opening and shutting lock structure and opening and shutting lock method of blocking member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cabin window structure of a construction machinery, an opening and shutting lock structure and an opening and shutting lock method of a blocking member capable of being locked on a cabin side at two positions in the case a front window glass 12 is shut and opened by a lock member in the case of one opening and shutting. SOLUTION: A frontal front window glass 11 constituting the front section of a window surface of a cabin 3 for covering an operating control section is included, a side front window glass 12 is provided to at least either right or left side of the frontal front window glass 11, a first guide 15 is provided to the side front window glass 12 side for vertically opening and shutting and moving the frontal front window glass 11, a second guide 19 is provided to the cabin 3 side for guiding the frontal front window glass 11 from the first guide 15 to the ceiling section 9 side of the cabin 3, and it is so constituted that the shutting and opening of the side front window glass 12 can be locked on the cabin 3 side by one opening and shutting lock member 26 provided to the side front window glass 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cabin window structure and an opening / closing lock structure of a construction machine such as a hydraulic excavator used for civil engineering work, construction work, and the like, and a method for opening / closing a closing member.

[0002]

2. Description of the Related Art Heretofore, generally, there is a cabin-type operation cockpit of such construction equipment. In this case, both left and right side edges of a windshield are supported by left and right front supports of the cabin. I have. And it is desired that such a windshield is made openable and closed, so guide rails are provided on the left and right front supports and the ceiling, and the guide rail guides a moving body provided above and below the windshield. The windshield,
There are models that can be transformed into a closed position that closes the cabin front and an open position that stores it in the ceiling and opens the front.

[0003]

However, in the above-mentioned conventional apparatus, the width of the front window glass must be smaller than the width of the cabin because the width of the front window glass must be stored in the ceiling. FIG. 13
As shown in (1), a guide rail 51 extending in the up-down direction is formed on the left-right inner edge of the front support column 50. The moving body (roller) guided by the guide rail 51
52 is arranged above and below the left and right side edges of the front window glass 53. In addition, when the windshield 53 is closed, the sealing material 5
4, it is necessary to seal hermetically, but it extends inward in the left-right direction from the front surface of the front window glass 53 and the front support column 50 to a position overlapping the left-right edge of the front window glass 53. The extended portion 50a is formed so as to extend to the end. Since the sealing material 54 was interposed at the overlap portion between the extension 50a and the edge of the windshield 53, the front strut 50 became thicker including the extension 50a, When the operator in the cabin looks at the front corner of the cabin, the blind spot area A must be wide from the rear end of the thick front support 50 to the extension 50a. The front corner of the cabin is particularly hindered when the front view of the cabin is obstructed, especially when the bucket is placed on the side rather than the front of the cabin, such as a hydraulic shovel, or when a bucket working machine with an offset stick is attached. The part must be worked in a wide angle and blind spot, the front visibility is poor, and even if the front window Be opened lath, without the thick front post serving as structure of the cabin is directly improved because of the presence in the cabin corners, are left problems such workability is poor.

[0004] The applicant of the present invention has disclosed in Japanese Patent Application Laid-Open No. 11-35.
No. 0532 was filed. In this cabin, the cabin is configured using columns, ceilings, and the like which are arranged at an interval on the left and right, and the front of the cabin has a front windshield and a front windshield. It is formed from a side windscreen located between the windscreen and the front cabin post.

[0005] The front windshield is housed in the ceiling with the left and right widths being narrower than the cabin width via the side windshield so that the front part of the cabin window can be opened as required. The windshield is configured to be openly housed inside the cabin. A guide member having a guide rail similar to the guide member is provided on the ceiling, and the same movable member provided at an upper end of the window frame member is movably guided and supported by the guide rail. It has a configuration. The front windshield has a closed position in which the upper and lower ends are guided by guides provided in the front and the cabin of the cabin to close the cabin front, and an open position in which the cabin front is housed in the ceiling to open the cabin front. It is configured to be transformed into. However, this one
A lock mechanism that locks the front window glass to the vehicle body when the front window glass is closed, and a lock mechanism that locks the vehicle window side when the front window glass is fully opened in the cabin ceiling room. The above two lock mechanisms are required, and there is a problem that the structure becomes complicated and the cost increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has a front windshield that forms a front portion of a window surface of a cabin that covers a driving operation unit, and a left windshield and a right windshield that are provided on the left and right sides of the front windshield. A side windshield provided on at least one of the sides, a first guide provided on the side windshield for moving the front windshield up and down, and a front face from the first guide; A second guide provided on the cabin side for guiding the front window glass to the ceiling side of the cabin, one open / close lock member provided on the side windshield, and one open / close lock member provided on the side windshield. When the side windshield is closed and open, A cabin window structure and an opening / closing lock structure of a construction machine, and a method of opening / closing a closing member, wherein the locking of the front front window glass is reliably performed and the work efficiency is improved. And

[0007]

According to a first aspect of the present invention, there is provided a cabin window structure for a construction machine according to the present invention, comprising: a front windshield that forms a front portion of a window surface of a cabin that covers a driving operation unit; An openable and closable side windscreen provided on at least one of the left and right sides in the vehicle width direction of the window glass;
A first guide provided on the side windshield for vertically opening and closing the front windshield, and guiding the front windshield from the first guide toward the ceiling of the cabin; A second guide member provided on the cabin side, one open / close lock member provided on the side windshield, and one open / close lock member provided when the side windshield is closed and opened. Are locked to the cabin side. A cabin window structure for a construction machine according to a second aspect of the present invention is configured as described in the first aspect,
A third guide member is provided between the first guide member and the second guide member to guide the front windshield from the closed position to the open position.

According to a third aspect of the present invention, there is provided a cabin window structure for a construction machine according to the first or second aspect, wherein the side surface disposed between the front windshield and the front support of the cabin. A front window glass, a shaft support mechanism for supporting the side front window glass on the front column of the cabin so as to be openable and closable, and actuating the opening / closing lock member in a locking direction when the side window glass is closed. A first striker provided on the cabin side, and a second striker provided on the cabin side for operating the opening / closing lock member in the locking direction when the side windshield is moved in the opening direction by the pivot mechanism. It is characterized by having.

According to a fourth aspect of the present invention, there is provided a cabin window structure for a construction machine according to any one of the first to third aspects, wherein the side windshield is opened in the cabin. In some cases, a regulating means for regulating the closing operation of the front windshield is provided. According to a fifth aspect of the present invention, in the opening / closing lock structure according to any one of the first to third aspects, when the side windshield moves in the opening direction, the guide opening of the third guide body or The guide opening of the second guide body is closed, and the guide opening of the third guide body or the guide opening of the second guide body is opened when the side windshield moves in the closing direction. The restriction means is constituted by a lock plate provided on the cabin side.

According to a sixth aspect of the present invention, there is provided a cabin window structure for a construction machine according to the fourth or fifth aspect, wherein the third guide body is moved when the side windshield moves the lock plate in the opening direction. Alternatively, an elastic member is provided between the lock plate and the cabin so as to urge the guide opening of the second guide body in the closing direction.

According to a seventh aspect of the present invention, there is provided an opening / closing lock structure according to any one of the first to third aspects, wherein the side windshield is provided above and below the cabin in the vertical direction. The opening and closing lock member described above,
It is characterized in that first and second strikers are provided respectively. The opening and closing lock structure of the present invention according to claim 8, wherein the lock rotating member pivotally supported by a pivot shaft provided on the substrate, and the pivot having one end attached to the lock rotating member and the other end attached to the substrate. An urging means for urging the lock rotating member so as to hold a neutral point in a direction intersecting with the support shaft; and A locking member urged by a member, wherein the unlocking member abuts on an unlocked portion of the lock rotating member when unlocking, and corresponds to the lock rotating member provided on the lock side when locking. It is characterized in that a striker provided on the locked side rotates the lock rotating member so that the locking member engages with and locks a lock portion of the lock rotating member.

According to a ninth aspect of the present invention, there is provided the opening / closing lock structure according to the eighth aspect, wherein the one lock rotating member provided on the lock side and the locked side are spaced from each other. And at least two strikers are provided so that the lock and the unlock can be performed in at least two positions.

According to a tenth aspect of the present invention, there is provided a method for locking an opening / closing member of an opening / closing member, wherein the opening / closing locking member provided at one of an opening and a closing member slidable with respect to the opening is provided. The lock is released after contacting and locking one of the at least two strikers provided on the other corresponding to the trajectory of the other, and further sliding the closing member with respect to the opening to move the striker. The lock is released after abutment against another striker and locking.

[0014]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a case in which the cabin window structure of a construction machine according to the present invention is applied to a hydraulic shovel. FIG. 1 is a schematic plan view of the hydraulic shovel, FIG. 2 is a schematic side view of the hydraulic shovel shown in FIG. FIG. 4 is a schematic explanatory view showing an arrangement position of a cabin front side portion of the hydraulic excavator of FIG. 2, FIG. 4 shows an operation state of the side front window glass of FIG. 3, and FIG. 4A is a schematic view showing a closed state of the side front window glass. FIG. 5 (B) is a schematic explanatory view showing an open state of the side front window glass, FIG. 5 is an operation explanatory view showing an open / close state of the front front window glass of the cabin of FIG. 2, and FIG. 6 is 6A-6A of FIG. FIG. 7 is a schematic explanatory view showing a cross section taken along a line, FIG. 7 is a schematic explanatory view showing a main part of an arrow 7A in FIG. 6, and FIG. 8 is a state in which the front windshield is housed on the ceiling side from the state shown in FIG. Also indicate In, (A)
FIG. 8 is a schematic explanatory view showing a perspective view from below, in which the front windshield is housed in the ceiling, and FIG.
FIG. 9A is a schematic enlarged explanatory view showing a state in which the lock plate shown in FIG. 7A closes the guide opening at the lower end of the third guide body. FIG. 9 shows a state in which the side windshield shown in FIG. 7 is opened. 6 (A) is a schematic explanatory view showing a perspective view of the side front window glass when it is opened, and FIG.
FIG. 9 is a cross-sectional view taken along the line B-9B in FIG.
FIG. 10A is a schematic explanatory view showing the opening / closing operation of the side front window glass, and FIG. 10 shows a main part taken along arrow 10A in FIG. 6; FIG. 11 shows a structure of an opening / closing lock member provided on the side windshield shown in FIG. 7, and FIG. 11 (A) shows a lock mechanism showing an unlocked state of the opening / closing lock member. FIG. 11B is a schematic explanatory view showing a plan view of FIG.
FIG. 12 is a schematic explanatory view showing a cross section taken along line A-11A, and FIG. 12 shows an opening / closing lock member showing a case where the unlocked state shown in FIG.
(A) is a schematic explanatory view showing a state in which the striker has entered in the approach direction YA, in which the lock rotating member has rotated in the direction of arrow Y1 and the locking member has been locked, and (B) has entered the striker in the approach direction YB. It is a schematic explanatory drawing which shows the state which is a case and the lock rotation member rotates in the arrow Y2 direction and is locked by the locking member.

As shown in FIGS. 1 to 5, the hydraulic excavator is provided with a cabin 3 for covering a driving section on the left side of an upper revolving unit 2 rotatably provided.
The configuration in which the bucket 4 is attached to the upper revolving unit 2 at the right side of the cabin 3 via the stick 5 and the arm 6 is the same as the conventional one. The cabin 3 includes left and right front and rear struts 7, 8 and a ceiling 9 as shown in FIG. 2. The front of the cabin has a front windshield 11 and a front windshield. The front windshield 12 is formed between the glass 11 and the front cabin support 7. The front windshield 11 is shown in FIG.
As shown in (1), the left and right widths are narrower than the cabin width through the side windshield 12, and are housed in the ceiling 9 so that they can be opened as required. And, as will be described later, the side windshield 12 is configured to be openly housed inside the cabin 3 on the indoor side. In other words, in this embodiment, the left front support column 7 is configured such that the door end side edge of the door (not shown) closes flush, and the outer surface of the right front support column 7 according to the embodiment of the present invention. The rear edge of the side windshield 12 is attached via a hinge portion 22. A guide body 15 is fixed to the front edge of the interior side surface of the side window glass 12 via an adhesive 14. The guide body 15 includes a fixing portion 15a and the fixing portion 1
5a, an upright portion 15b rising from the fixed portion 15a to the front windshield 11 side,
5c, the projections 15f project from the front windshield 11 and the side windshield 12 toward the gap between the front windshield 11 and the side windshield 12 to prevent the adhesive 14 from protruding. A cylindrical dovetail-shaped guide rail 15d is provided on the side surface of the front window glass of the upright portion 15b.
Are formed. The left and right outer surfaces 15e of the guide body 15 are tapered so as to be substantially along the line of sight X of the operator sitting in the driver's seat 3a. Of the projection 15g are projected.

On the other hand, front windshield 11
The window frame 16 is fixed to the left and right side edges by an adhesive 14a. The window frame 16 is fixed to the glass 16a and rises from the fixed portion 16a toward the inside of the cabin. And an inner protruding portion that protrudes from the distal end portion of the upstanding leg portion 16b toward the side windshield 12 and overlaps the outer protruding portion 15c on the guide material side on the indoor side. As shown in FIG. 3, a movable body 17 is formed above the inner protruding portion 16c and is movably guided and supported by the guide rail 15d in a state where the tip ball portion 17a is prevented from falling off. Installed. Reference numeral 18 denotes a sealing material. The sealing material 18 seals the space between the guide body 15 and the window frame material 16 when the front windshield 11 is closed. The outer projection 16 is fixed to a corner inner surface 16d formed between the standing leg 16b and the inner projection 16c of the material 16, and overlaps the inner projection 16c when the front windshield 11 is closed. Part 15c
Is configured to abut against the sealing material 18 in a resilient manner to form an airtight seal.

A guide member 19 having a guide rail similar to the guide member 15 is provided on the ceiling 9 as shown in FIG. 5, and a similar guide member provided at the upper end of the window frame member 16 is provided. The moving body 17 is configured to be movably guided and supported by the guide body 19. The front windshield 11 is guided by guides 15 and 19 provided at the front and the top of the cabin 9 to close the cabin front, and the front windshield 11 is housed in the ceiling 9 to accommodate the cabin front. It is configured to transform into an open posture to release the camera.

A support member 21 is fixed to the rear end edge of the side windshield 12 via an adhesive 20, while a hinge 22 is integrally fixed to the right front support 7. I have. The support member 21 is pivotally supported by the hinge portion 22 via the hinge pin 23 so as to be swingable.
The side window glass 12 is configured to swing open and close toward the cabin room. Reference numeral 24 denotes an elastic sealing material that is compressed and sealed when the side windshield 12 is closed.

In this embodiment, the front windshield 11 is provided on the side of the ceiling 9 with the first guide body 15, the third guide body 20 provided as necessary,
It is guided by the guide body 19 to be in the fully opened state, and at least one of the side windshields 12 is swingably housed inside the cabin 3 to be in the fully opened state.

At this time, the front windshield 1
1 is the open side window glass 12
The lock plate 25 for locking and restricting the downward movement to the front side of the window surface in advance of the above is urged by the spring D3 so as to always close the lower end of the third guide 20 as shown in FIG. And is pivotally supported on the vehicle body side via a pin 25a.

When the side windshield is moving in the opening direction, the lock plate 25 is provided so as to always close the guide opening at the lower end of the third guide body 20. Also, there is no third guide body 20,
When the first guide body 15 and the second guide body 19 are continuously connected, the lower end of the guide opening of the second guide body 19 may be closed.

That is, as shown in FIG. 11 (B), the opening / closing lock member 26 has a base 31 formed in a Y-shape in its entire cross section. Are formed in a U-shape. A lock rotation member 34 pivotally supported by a shaft 33 provided between the bases 31a and 31b is rotatably provided. The lock rotation member 34 is formed in a substantially circular shape as a whole and has a plurality of concave portions 34a, 34b, 35a, 35b in a radial manner.
And convex portions 34A to 34D, for example, one convex portion 34
Concave portions 34a and 34b are provided adjacent to each other across A and engage with a striker ST described later to operate in a locked state.

As shown in FIGS. 11A and 11B, a locking portion S1 provided on the projection 34A of the lock rotating member 34 and a locking portion S2 provided on the base 31b. A spring D1, which is an elastic member, is disposed therebetween. The spring D1 is disposed substantially in a straight line so as to be substantially perpendicular to the axis 33C of the locking portions S1 and S2 and the shaft 33 of the lock rotating member 34, and sets the neutral position where the lock rotating member 34 does not rotate with respect to the shaft 33. Base 3 to be retained
1b is configured to be biased toward the locking portion S2 side.

Then, even if the lock rotation member 34 rotates about the shaft 33, the lock rotation member 34 is configured to return to the neutral position shown in FIG. Further, there is provided a locking member 36 pivotally supported by a shaft 38 provided on the bases 31a and 31b and attached via a spring D2 so as to abut on the projection 34A of the lock rotating member 34 in the neutral state. I have.

Therefore, even if the lock rotating member 34 is rotated about the shaft 33 against the urging force of the elastic members D1 and D2, the tip of the key-shaped portion 36b of the locking member 36 is If not engaged with 34a, 34b,
When the urging force is released as described above, the lock rotating member 34 is configured to always return to the neutral state in FIG. 11A by the elastic member D1.

Further, as shown in the unlocked state shown in FIG. 11, the locking member 36 is formed in a key shape, and the base 31a and the base 31b are spaced apart from the shaft 33 of the lock rotating member 34. It is supported by a shaft 38 provided therebetween, and is configured to regulate the operation of the lock rotation member 34.
Also, a key-like portion 36 extending from the base 36S of the locking member 36
The leading end of b is always in contact with the convex portion 34A of the lock rotating member 34 to be in the neutral position for releasing the lock, or in engagement with the concave portions 34a and 34b of the lock rotating member 34 to be in the locked position. The spring D2, which is an elastic member that urges the lock rotating member 34, is connected to the bases 31a, 3a.
1b and the locking member 36. An unlocking lever 41 is provided on the base 36S of the locking member 36,
The base 31a is provided with an elongated hole 36h in which a lock release lever 41 can move in a locking direction and an unlocking direction, which will be described later.

As shown in FIG. 12 (A), the second striker ST2 enters the concave portion 35a of the lock rotation member 34 from the direction of arrow YA, as shown in FIG. When the lock member 36 is rotated in the arrow Y1 direction against the urging force of the elastic members D1 and D2 from the unlocked state shown in FIG. A locked state is formed by engaging with the concave portion 34a. When the first striker ST1 enters the recess 35b from the YB direction as shown in FIG. 12 (B), the locking member 36 becomes the elastic members D1, D in the same manner as described above.
2 rotates in the direction of arrow Y2 against the urging force of
The key-like portion 36b at the tip of No. 6 engages with the concave portion 34b of the lock rotating member 34 to constitute the above-mentioned locked state.

Accordingly, the lock state can be formed at two positions by one opening / closing lock member 26.
As shown in FIG. 7, the lock member 26 at the time of opening and closing is mounted on the upper frame F1 of the side windshield 12 in the closed state with the mounting portion 31H of the base 31 down and the mounting hole 31h and the shaft. It is attached by bolts through 33 holes 33d. The lock rotation member 34
The first striker ST1 for closing, for example, is provided on the cabin side above the side windshield 12 so as to face the
Are secured by bolts BT so as to extend downward in the vertical direction of the cabin. The locking member 26 at the time of opening and closing shown in FIG. 7 shows a locked state engaged with the first striker ST1.

As shown in FIG. 7, a second striker ST2 for opening when the side windshield 12 is in the open state is attached to the front column 7 of the cabin with a bolt BT. Then, as shown in FIG. 8, the front windshield 11 has a first guide body (guide rail 15 d), which is formed in a cylindrical dovetail shape of the first guide body 15 provided on the side windshield 12. The third guide member 20 and the second guide member 19 guide the ascending member so as to ascend to the fully opened state accommodated in the ceiling portion 9. When the front windshield 11 is fully opened, the lock plate 25 at the position indicated by the two-dot chain line in FIG.
(A) As shown in FIG.
Is rotated in the opening direction inside the cabin, the first guide body 1
5 is disengaged from the upper end of the guide rail 15d, and the pressing force disappears. Therefore, the biasing force of the elastic member D3 that has been compressed shows the solid line from the position shown by the two-dot chain line in FIG. To the closed position. Therefore, the lock plate 25 closes the guide opening at the lower end of the third guide body 20 as shown in FIGS. 8A and 8B, and can prevent the front windshield 11 from lowering. .

On the other hand, the side front window glass 12
However, when the first striker ST1 rotates in the closing direction as shown by the solid line in FIG. 9B, for example, as described above, the first striker ST1 moves from the YB direction to the concave portion 3 as shown in FIG.
5b, and the lock rotating member 34 is moved to Y2 in the same manner as described above.
And the key portion 3 of the locking member 36
6b engages with the tip of the shutter 6b to enter a locked state when closed.

When the front windshield 11 is fully opened, the side windshield 12 is moved to the position shown in FIG.
(B), as shown by the two-dot chain line in FIG. 9 (B), it is possible to perform an operation that is easy to perform in an open manner by opening the hinge via the hinge portion 22. From this state, even if it is attempted to lower the open state stored in the ceiling of the front windshield 11 to the closed state, the guide opening at the lower end of the third guide body 20 is shown in FIG. As described above, since the elastic member D3 is closed by the biased lock plate 25, for example, even if the front windshield 11 descends, it can be suppressed by the lock plate 25.

Then, the front windshield 11
Is operated in the closing direction, first, the side windshield 12 is turned in the closing direction, and as shown by a solid line in FIG. 9B, the first guide body 15 of the side windshield 12 is turned on. The upper end of the guide rail 15d abuts against the side portion 25b of the lock plate 25 and presses against the urging force of the spring D3, and the two-dot chain line from the open / close position of the solid line shown in FIG. The lock plate 25 can be released from the closed position by moving the lock plate 25 to the closed position shown in FIG. From this state, the front windshield 11 housed in the ceiling 9 can be lowered via the second guide body 19, the third guide body 20, and the first guide body 15.

Further, the above-mentioned side windshield 1
The release of the lock of the lock member 26 at the time of closing and the opening and closing of the lock member 26 at the time of closing
1 is urged against the springs D1 and D2 in the direction of the arrow YC shown in FIG. 11B to move in the elongated hole 36h to remove the tip of the key-like portion 36b from the concave portions 34a and 34b. This is performed after the unlocked state shown in FIG. 11A, and the side windshield 12 is rotated in the opening direction or the closing direction as described above.

In the above embodiment, the lock rotating member 34 is used.
Has described the case where a plurality of recesses 34a, 34b are provided, but the approach direction of the striker ST provided vertically is set to each direction, and any one of the recesses 34a, 34b of the lock member 26 at the time of opening and closing is set. Even if the direction of one of the recesses and the striker is adjusted, the same operation and effect as described above can be achieved.

In the above-mentioned construction, when the front windshield 11 moves upward and is housed on the ceiling 9 side, the side windshield 12 is opened and housed inside the cabin 3 indoors. By doing so, not only the front but also the above-mentioned windshields 11 and 12 on the sides can be opened as necessary, and in this case, there is no obstruction to the front and front side fields of view. You can work in a state full of openness.

In this case, the front windshield 11 is not guided by the front support 7 of the cabin 3 but is guided by a guide rail portion which is separated from the support 7 and disposed in front of the support 7, that is, guided by the guide body 15 to open and close. As a result, the front column 7 necessary for the cabin structure is located on the rear side, and as a result, the field of view of the cabin corner portion is wide, including the front column 7, as shown in FIG. The angle of view is not obstructed by the field of view.
As shown in (1), it is sufficient only to be shielded by the narrow angle B between the window frame member 16 and the guide member 15, so that the forward field of view can be expanded and the workability is improved.

Furthermore, in this embodiment, as shown in FIG. 3, when the front support 7 is used as a reference, there is a front windshield 11 in front of the front support 7 and a front support behind the cabin corner. As a result, the front windshield 12 is disposed until the front support 7 is reached. As a result, the front support 7 and at least one of the left and right corners can be seen through. It will give a spacious image like a bay window projecting forward from 7 and will give room to the living space in the cabin. Further, as a result of the arrangement in which the sealing member 18 is disposed at a portion where the outer projecting portion 15c of the guide member 15 and the inner projecting portion 16c on the window frame member side overlap each other inside and outside, the sealing member 18 is formed. Is arranged between the facing surfaces of the guide member 15 and the window frame member 16 in the left-right direction, so that the blind spot can be prevented from being increased by that much, which is convenient.

Further, as shown in FIG.
Moves the guide material 15 to the front windshield 11
Extended to the side and the front windshield 1
1 is not overlapped so as to be opposed to the front and back, and is not interposed between the opposed members.
The front projection 15c is overlapped with the outer projection 15c formed at the front and rear, and is interposed in this overlap. Therefore, it is not necessary to extend the inner projection 16c long to a position overlapping with the front windshield 11 of the front window glass. As a result, as shown in FIG. 3, when the front windshield 11 is opened as shown in FIG. 3, the range C serving as a blind spot can be further reduced, and the visibility can be further improved. In addition, the sealing member 18 is formed on the window frame member 16 by using an upright leg 16b and an inner protrusion 16c.
Since it is attached using the inner side surface of the character-shaped corner, when the outer projection 15c comes into contact with the seal member 18 in a resilient manner, it receives an elastic force in the orthogonal direction.
The sealing effect is improved. Further, the guide member 15 has a laterally outer surface 15e formed as a tapered surface substantially in the line of sight of the operator, thereby further contributing to a reduction in blind spot.

In the above-described embodiment, the cabin window structure of the construction machine has been described. However, the present invention is not limited to this. For example, an open / close lock structure between two members that slide with each other and a method of opening / closing a closing member that closes an opening are provided. The same operation and effect as described above can be exerted even when applied to Now, although not shown, a method of locking the opening and closing of the closing member will be described.
An opening / closing lock member provided on one of an opening provided in a ship or the like and a closing member which can be opened / closed with respect to the opening (the front windshield 11 and the side front windshield 12 in the above embodiment). After being locked by contacting one of the at least two strikers provided on the other corresponding to the movement trajectory of the other, the lock is released, and the closing member is slid with respect to the opening to move. Then, the lock is released after the striker is brought into contact with another striker and locked, and then the lock is released. When the lock method of opening and closing the closing member is adopted, the opening and closing of the closing member can be smoothly and reliably performed at a plurality of locations quickly. Can do it.

[0040]

As described above in detail, according to the cabin window structure for a construction machine according to the first aspect of the present invention, the front windshield that forms the front portion of the window surface of the cabin that covers the operation control section, Openable and closable side windshield provided on at least one of the left and right sides of the front windshield in the vehicle width direction, and the side windshield for vertically opening and closing the front windshield. A first guide body provided on the glass, a second guide body provided on the cabin side for guiding the front windshield glass from the first guide body to a ceiling portion side of the cabin, and the side windscreen The one side locking member provided on the glass and the one side opening and closing locking member provided by When the front window glass is configured to be locked to the cabin side at the time of closing and opening, respectively, at the time of full closing and at the time of full opening of the front windshield, the one opening / closing lock member is used. The lock can be easily and securely locked to the cabin side, and the cost can be reduced.

According to the cabin window structure for a construction machine according to the present invention, the front windshield is disposed between the first guide body and the second guide body. Since the third guide body that guides from the closed posture to the open posture is provided, in addition to the effect of claim 1, the third guide body smoothly moves between the first guide body and the second guide body. Can be performed.

According to a third aspect of the present invention, there is provided a cabin window structure for a construction machine according to the first or second aspect, wherein the cabin window is disposed between the front windshield and the front strut of the cabin. The side windshield, a pivoting mechanism for supporting the side windshield on the front column of the cabin so as to be openable and slidable, and the opening / closing lock member operating in the locking direction when the side windshield is closed. A first striker provided on the cabin side to be operated; and a first striker provided on the cabin side for operating the opening / closing lock member in the locking direction when the side windshield is moved in the opening direction by the pivot mechanism. Since two strikers are provided, in addition to the effects of claims 1 and 2, the front windshield is Has a lower opening-closing movement to the guide body,
In addition, the side windshield is pivotally supported by the front column of the cabin so that it can open and close and swing, so that the entire front of the cabin window can be opened, so that the work can be performed in a state full of openness without obstructing the field of view. Can be.

According to the cabin window structure for a construction machine of the present invention described in claim 4, in the configuration according to any one of claims 1 to 3, the side windshield is opened in the cabin. Since the restricting means for restricting the closing operation of the front windshield is provided during the operation, in addition to the effect of any one of claims 1 to 3,
Inadvertent lowering of the front windshield can be avoided.

The lock plate and the cabin are moved so that the guide opening of the third guide body or the second guide body is urged in the closing direction when the side windshield moves in the opening direction. An elastic member is provided between them. According to the cabin window structure of a construction machine of the present invention described in claim 5, in the configuration according to any one of claims 1 to 3, the third guide is provided when the side windshield moves in the opening direction. Closing the guide opening of the body or the guide opening of the second guide, and closing the guide opening of the third guide or the guide opening of the second guide when the side windshield moves in the closing direction. The lock means provided on the side of the cabin arranged so as to open the door constitutes the restricting means. Therefore, in addition to the effects of any one of claims 1 to 3, the front windshield and the side front windshield are provided. When the glass is open, the lock plate closes the guide opening of the third guide body or the guide opening of the second guide body, and the front door is closed. Preventing the descent operation of the cement window glass, it is possible to avoid a drop in inadvertent the front windshield.

According to the cabin window structure of a construction machine according to the present invention, the lock plate is moved to the third position when the side windshield moves in the opening direction. An elastic member is provided between the lock plate and the cabin so as to urge the guide opening of the guide body or the second guide body in the closing direction. The lock plate closes the guide opening of the third guide body or the guide opening of the second guide body when the front windshield and the side windshield are open, and the front windshield descends. Operation can be prevented, and inadvertent lowering of the front windshield can be avoided.

According to the cabin window structure for a construction machine of the present invention described in claim 7, in the configuration according to any one of claims 1 to 3, the side windshield of the side windshield in the vertical direction of the cabin. Since the opening / closing lock member and the first and second strikers are provided on the upper side and the lower side, respectively, in addition to the effect of any one of claims 1 to 3, the above-mentioned upper and lower sides are provided. The opening / closing lock member allows the front windshield and the side windshield to be more stably and reliably opened and closed.

According to the opening / closing lock structure of the present invention, the lock rotating member pivotally supported by the pivot provided on the substrate, and one end is attached to the lock rotating member and the other end is the substrate. Urging means for urging the lock rotating member to hold a neutral point in a direction intersecting with the pivot shaft attached to the pivot shaft, and the lock pivotally supported by the substrate and detachably attached to the lock rotating member. A locking member urged by an elastic member on the rotating member side, wherein the locking member comes into contact with an unlocked portion of the lock rotating member when unlocking, and the locking rotation provided on the locking side when locking. The striker provided on the locked side corresponding to the member rotates the lock rotation member, and the locking member engages with the lock portion of the lock rotation member to lock. , Can sell the inexpensive closing lock structure easy cost structure is simple operation.

According to the ninth aspect of the present invention, in the configuration of the eighth aspect, the one lock rotating member provided on the lock side and the locked side are spaced from each other. 9. The lock according to claim 8, further comprising at least two strikers provided so that the lock and the unlock can be performed in at least two positions. The member can be easily and securely locked to the vehicle body side, and the cost can be reduced.

According to the tenth aspect of the present invention, there is provided an opening and closing lock provided at one of an opening and a closing member which can be opened and closed by sliding with respect to the opening. After being locked by contacting one of the at least two strikers provided on the other side corresponding to the movement path of the member, the lock is released, and the closing member is slid with respect to the opening to move. Since the lock is released after the striker is locked by contacting another striker, the closing member can be smoothly and reliably opened and closed quickly at a plurality of locations and at a low cost. be able to.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a case where a cabin window structure of a construction machine according to the present invention is applied to a hydraulic shovel.

FIG. 2 is a schematic side view of the hydraulic excavator shown in FIG.

FIG. 3 is a schematic plan sectional view showing a cabin front part of the excavator of FIG. 2;

4A and 4B are diagrams illustrating an operation state of the side front window glass in FIG. 3, wherein FIG. 4A is a schematic explanatory view illustrating a closed state of the side front window glass, and FIG. 4B illustrates an open state of the side front window glass. FIG.

FIG. 5 is an operation explanatory view showing an open / closed state of a front front window glass of the cabin of FIG. 2;

FIG. 6 is a schematic explanatory view showing a cross section taken along line 6A-6A in FIG.

FIG. 7 is a schematic explanatory view showing a main part taken along arrow 7A in FIG. 6;

8 shows a state in which the front windshield is housed in the ceiling from the state shown in FIG. 7, and FIG. 8 (A) is a perspective view from below where the front windshield is housed in the ceiling. FIG. 8 is a schematic explanatory view showing
It is a schematic enlarged explanatory view showing the state where the lock plate shown in (A) has closed the guide opening of the lower end of the 3rd guide object.

9A and 9B show a state in which the side front windshield glass shown in FIG. 8 is opened, and FIG. 9A is a schematic explanatory view showing a perspective view when the side front windshield is opened, and FIG.
FIG. 9 is a sectional view taken along line 9B-9B of FIG.
It is a schematic explanatory view showing opening and closing operation of a side front window glass of (A).

FIG. 10 is a schematic explanatory view showing a main part taken along arrow 10A in FIG. 6 and showing the locking mechanism for opening and closing attached to the lower side of the front windshield.

FIG. 11 shows a structure of an opening / closing lock member provided on the side windshield shown in FIG. 7,
(A) is a schematic explanatory view showing a plan view of a lock mechanism showing an unlocked state of the lock member at the time of opening and closing, and (B) is a view showing FIG.
It is a schematic explanatory drawing which shows the cross section which follows 11A-11A line of 1 (A). ,

12A and 12B show an open / close lock member when the lock member is operated from the unlocked state shown in FIG. 11A to the locked state, and FIG. FIG. 4 is a schematic explanatory view showing a state in which the member is rotated in the direction of arrow Y1 and locked by a locking member;
(B) is a schematic explanatory view showing a case where the striker has entered in the approach direction YB, in which the lock rotating member is rotated in the arrow Y2 direction and locked by the locking member.

FIG. 13 is a schematic explanatory view showing a plane cross section of a conventional cabin front side portion.

[Explanation of symbols]

 Reference Signs List 3 Cabin 7 Front support 11 Front windshield 12 Side windshield 15 First guide 15b Standing piece 15c Outside protrusion 16 Window frame 16b Standing leg 16c Inner protrusion 17 Moving body 18 Sealing material 19 Second guide Body 20 Third guide body 25 Lock plate 26 Locking member for opening and closing 31 Base 34 Lock rotating member 36 Locking member D1, D2 Elastic member D3 Elastic member

Claims (10)

[Claims] 1. A front windshield that constitutes a front portion of a window surface of a cabin that covers a driving operation unit, and is provided on at least one of right and left sides in a vehicle width direction of the front windshield and can be opened and closed. The first windshield from the first windshield, the first guide body provided on the side windshield for vertically opening and closing the front windshield, and the front windshield from the first guide body. A second guide body provided on the cabin side for guiding to the ceiling side of the cabin; one opening / closing lock member provided on the side windshield; and one side opening / closing lock member provided by the one side opening / closing member. The glass is locked to the cabin side when it is closed and when it is opened. A cabin window structure for a construction machine, characterized by being constructed. 2. A third guide body for guiding the front windshield from a closed position to an open position is provided between the first guide member and the second guide member. The cabin window structure for a construction machine according to claim 1. 3. The side windshield disposed between the front windshield and the front support of the cabin, and the side windshield supported by the front support of the cabin so as to be capable of swinging open and close. A pivoting mechanism, a first striker provided on the cabin side for operating the opening / closing locking member in the locking direction when the side windshield is closed, and an opening direction of the side windshield by the pivoting mechanism. The cabin window structure for a construction machine according to claim 1 or 2, further comprising a second striker provided on the cabin side to actuate the opening / closing lock member in the locking direction when the door is moved to the open position. 4. The cabin is provided with regulating means for regulating the closing operation of the front windshield when the side windshield is opened. A cabin window structure for a construction machine according to any one of the above. 5. When the side windshield moves in the opening direction, the guide opening of the third guide body or the guide opening of the second guide body closes, and the side windshield moves in the closing direction. The restriction means is constituted by a lock plate provided on the cabin side which is arranged to open the blockage of the guide opening of the third guide body or the guide opening of the second guide body. A cabin window structure for a construction machine according to any one of claims 1 to 3. 6. The lock plate and the cabin so as to urge the guide opening of the third guide body or the second guide body in the closing direction when the side windshield moves the lock plate in the opening direction. The cabin window structure of a construction machine according to claim 4, further comprising an elastic member provided between the cabin window and the construction machine. 7. The open / close lock member and the first and second strikers are respectively provided on upper and lower sides of the cabin of the side windshield in the vertical direction. The cabin window structure for a construction machine according to any one of claims 1 to 3. 8. A lock rotation member pivotally supported by a pivot shaft provided on the substrate, and a direction intersecting the pivot shaft having one end attached to the lock rotation member and the other end attached to the substrate. A biasing means for biasing the lock rotating member so as to hold a neutral point of the lock rotating member, and a biasing means pivotally supported by the substrate and detachably attached to the lock rotating member and biased by the elastic member toward the lock rotating member. A locking member that, when unlocked, comes into contact with an unlocked portion of the lock rotation member, and when locked, a striker provided on the locked side corresponding to the lock rotation member provided on the lock side. Is configured to rotate the lock rotation member so that the locking member engages with and locks a lock portion of the lock rotation member. 9. The apparatus according to claim 1, further comprising: a lock rotating member provided on a lock side; and at least two strikers disposed at intervals on the locked side, wherein the lock and the unlock are at least provided. The opening / closing lock structure according to claim 8, wherein the opening / closing lock structure is configured to be formed at two positions. 10. An opening and closing member slidable with respect to the opening and capable of being opened and closed, the opening and closing lock member provided at one of the other corresponding to the movement locus of at least the other. After being locked by contacting one of the two strikers, the lock is released, and then the closing member is slid with respect to the opening and moved to contact another striker of the striker and locked. A lock method for opening and closing a closing member, comprising releasing the lock.