JP2010059638A - Door device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door device capable of holding a door open without additionally installing a bracket on a frame or a door member. <P>SOLUTION: A hinge plate opening angle restricting mechanism 71 for locking the opening operation of one hinge plate 43 at a specified angle is provided to an area ranging from the other hinge plate 41 to the one hinge plate 43. In the hinge plate opening angle restricting mechanism 71, a guide plate 73 having a guide hole 72 is integrally attached to the other hinge plate 41 by weld parts 73a, 73b, a pocket part 75 is formed at the lower part of the guide plate 73, and the pocket part 75 is declined from the upper end edge to the guide part 76. A bracket part 77 is integrally formed at the upper edge of the lower side one hinge plate 43. The vertical shaft part 79a of an L-rod 79 is loosely fitted to the shaft hole 78 of the bracket part 77. The L-rod 79 is slidably fitted to the guide hole 72. A locking plate part 80 falling in the pocket part 75 is integrally attached to the front end of the L-rod 79. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a door device that can be opened and closed by a hinge.

  FIG. 19 shows a hydraulic excavator 10 as a work machine, and an upper swing body 12 is turnably provided on a lower traveling body 11, and a cab 13, a work device 14, and a power device 15 such as an engine are placed on the upper swing body 12. Is installed. The power unit 15 is covered with an upper cover 16, a side door 17, and the like. The side door 17 is attached by a hinge 18 so as to be opened and closed. The open state of the side door 17 is held by a hold mechanism 19 shown in FIGS.

20 to FIG. 22, when the side door 17 is closed, as shown in FIG. 21, between the holes of the brackets 19a and 19b added to the upper revolving frame 12f, A stay (round bar) 19s formed in a bent shape is stored so as to be hung, and when the side door 17 is opened, a hole of a bracket 19a added to the upper swing frame 12f as shown in FIG. The stay 19s is hooked between the hole of the bracket 19d added to the inner surface of the side door 17 (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 9-315347 (page 3-4, FIGS. 1-4)

  In the conventional hold mechanism 19, brackets 19a, 19b, and 19d for hooking the stay 19s must be additionally installed on the upper swing frame 12f and the side door 17 by welding.

  Furthermore, since the stay 19s when the door is closed is simply passed through the holes in the brackets 19a and 19b, it may come off the holes in the brackets 19a and 19b if a large vertical vibration occurs in the fuselage. In order to suppress the dropout, a dropout prevention bracket 19e is additionally installed on the inner surface of the side door 17 by welding as shown in FIGS. 20 to 22, and the dropout prevention bracket 19e is mounted on the brackets 19a and 19b when the door is closed. The stay 19s is pressed from above.

  Further, in the conventional hold mechanism 19, when the side door 17 is opened, the stay 19s is hooked between the holes of the brackets 19a and 19d as shown in FIG. Since the alignment work is accompanied by the desorption of 19s, it takes time and there is a risk of omitting this work at the site.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a door device that can maintain a door open state without adding a bracket to a frame or a door member. An object of the present invention is to provide a door device that can be held in an automatic manner.

  The invention described in claim 1 includes a door panel main body and a hinge in which one side of the door panel main body is attached to a frame. The hinge is fixed to the frame, and the hinge plate is fixed to the frame. The other hinge plate, which is pivotally supported via a shaft member, and which is attached to the door panel body, and which is provided from the one hinge plate to the other hinge plate and which locks the opening operation of the other hinge plate with respect to the one hinge plate at a certain angle. The hinge plate opening angle regulating mechanism includes a guide plate provided on one hinge plate and having a guide hole that is elongated in the vertical direction, and a concave housing provided on the guide plate. From the pocket part with a part and the upper edge of this pocket part A guide part provided at a downward slope toward the outside of the ket part, a bracket part having a horizontal shaft hole provided integrally with the other hinge plate, and a vertical axis part freely rotatable in the shaft hole of the bracket part And an L-shaped rod that is slidably fitted in a vertically slidable manner and is slidably fitted in the guide hole of the guide plate, and a tip of the L-shaped rod. The locking plate portion moves together with the L-shaped rod by the opening operation of the other hinge plate with respect to the one hinge plate and falls into the pocket portion from the guide portion.

  According to a second aspect of the present invention, the guide plate of the hinge plate opening angle regulating mechanism in the door device according to the first aspect of the present invention is such that one hinge plate and another plate member are integrated with one hinge plate by a welded portion. The pocket portion is bent from the lower portion of the guide plate, and the guide portion is bent from the upper edge of the pocket portion.

  According to a third aspect of the present invention, the guide plate of the hinge plate opening angle regulating mechanism in the door device according to the first aspect is formed by a member integral with one hinge plate, and the pocket portion is separate from the guide plate. The guide portion is formed by bending from the upper edge of the pocket portion.

  According to a fourth aspect of the present invention, in the door device according to any one of the first to third aspects, the one hinge plate is a single hinge plate that is elongated in the frame direction on the side fixed to the frame. Yes, the shaft member is a plurality of shaft members in which the rotation center axis is arranged on the same straight line along the longitudinal direction at one side of the longitudinal direction of the one hinge plate and one side of the other end, The other hinge plate is a plurality of hinge plates that are pivotally supported by these shaft members so as to be openable and closable with respect to the one hinge plate.

  According to a fifth aspect of the present invention, the door panel main body in the door device according to any one of the first to fourth aspects includes an outer plate, an inner plate fixed to the inner surface of the outer plate, and these outer plates. And a foam material filled between the inner plate and the inner plate.

  According to the first aspect of the present invention, the hinge plate opening angle restricting mechanism for locking the opening operation of the other hinge plate with respect to the one hinge plate at a certain angle is provided from the one hinge plate to the other hinge plate. The hinge plate on one side and the other side doubles as a bracket for the conventional opening mechanism for holding the door opening angle provided on the frame or door side, so there is no need to install additional brackets on the frame or door panel body, preventing the generation of additional parts it can. In particular, in the L-shaped rod, the horizontal axis portion is always fitted in the guide hole of the guide plate of the one hinge plate, and the vertical axis portion is not loosely fitted in the shaft hole of the bracket portion of the other hinge plate. Therefore, even if a large vibration occurs when the door is closed, no additional parts are required to prevent the dropout. When the door is opened, the locking plate provided at the tip of the L-shaped rod moves together with the L-shaped rod. Since it falls into the pocket portion so as to get over the guide portion, the fixing function automatically works in conjunction with the door fully open operation, and the door open state can be automatically maintained at the fully open angle. Furthermore, with these configurations, the scale of the parts can be reduced as compared with the conventional hold mechanism, so that it can be compactly accommodated in the hinge and the longitudinal axis of the L-shaped rod can be used as the other hinge plate. Because it is loosely fitted in the hole of the bracket part provided so as to be freely rotatable and slidable in the vertical direction, the structure of the hinge plate opening angle regulating mechanism can be simplified, the cost can be reduced, and the L-shaped rod can be easily attached and detached. Easiness of intensity change based on this can be achieved.

  According to the second aspect of the present invention, since the guide plate formed by sequentially bending the pocket portion and the guide portion is welded to one hinge plate, the hinge plate opening angle regulating mechanism can be easily manufactured, and the cost can be reduced. You can plan.

  According to the third aspect of the present invention, since the pocket portion formed by a separate member is welded to the guide plate formed by a member integral with the one hinge plate, it is difficult to manufacture by integral molding with the guide plate. Retrofit pocket can be added.

  According to the invention described in claim 4, two hinges are supported by a plurality of other hinge plates on a long one hinge plate so as to be freely opened and closed by a plurality of shaft members arranged on the same straight line. Since there is no need to adjust between the two hinges, it is easy to fine-tune the door mounting state, and the number of mounting bolts can be reduced. Fine adjustment of the mounting state can be easily performed. Furthermore, since the long one-side hinge plate serves as a plate for integrating a plurality of hinges, there is no need to weld plates between the hinges in order to integrate the plurality of hinges. The welding process can be omitted and the rigidity can be improved as compared with a welded product.

  According to the invention described in claim 5, the load acting on the hinge by filling the foam material between the outer plate and the inner plate to reduce the weight of the door panel body and improve the vibration absorption performance. The durability of the hinge can be improved.

  Hereinafter, the present invention will be described in detail with reference to one embodiment shown in FIGS. 1 to 16, another embodiment shown in FIG. 17, and still another embodiment shown in FIG. explain.

  FIG. 12 shows a hydraulic excavator 10 as a work machine. An upper swing body 12 is turnably provided on a lower traveling body 11, and a cab 13, a work device 14, and a power device 15 such as an engine are mounted on the upper swing body 12. Is installed. The power unit 15 is covered with an upper cover 16, a side door 17, and the like.

  FIG. 13 shows a door panel main body 20 of the side door 17, and this door panel main body 20 is formed by pressing an outer plate 21 and a sheet metal having a thickness smaller than that of the outer plate 21 into an uneven shape on the inner surface of the outer plate 21. An inner plate 23 that fixes the concave portion and forms a space 22 between the convex portion and the outer plate 21 and a foam material 24 filled in the space 22 between the outer plate 21 and the inner plate 23 are provided. is doing. The foam material 24 heats and foams the foam material 24a.

  The peripheral portion of the outer plate 21 includes a hemming portion 25 that is hemmed so as to be folded and crushed so as to wrap around the peripheral portion of the inner plate 23. The inner plate 23 includes a concave portion 27 formed in a concave shape and joined to the outer plate 21 with an adhesive, and a convex portion 29 bulged with respect to the concave portion 27. Since the adhesive joins and seals the outer plate 21 and the inner plate 23, a paste-type structural adhesive having viscosity and thermosetting properties is desirable.

  As shown in FIG. 14, one side of the door panel main body 20 of the side door 17 is mounted on the upper swing body 12 by a hinge 31 attached to one side of the door panel main body 20. Is attached. That is, one side portion of the door panel body 20 is attached to one side member 32a of the frame 32 by a hinge 31 so as to be openable and closable in the horizontal direction. The door panel body 20 has a bent surface portion 20b formed by bending an upper portion thereof toward the frame 32 with respect to the vertical surface portion 20a.

  In the latch mounting hole 33 on the opposite side of the hinge 31 of the door panel main body 20, a latch mechanism portion 34 of the latch device 30 capable of engaging and disengaging the vertical surface portion 20a of the door panel main body 20 to the frame 32 side is provided. On the other hand, as the door panel body 20 is opened and closed, a striker 36 as an engaging body of the latch device 30 protrudes from the mounting plate 35 fixed to the other member 32b of the frame 32 so as to face the direction in which the door panel body 20 abuts. The latch mechanism portion 34 provided on the door panel body 20 side can be engaged with and disengaged from the striker 36.

  On the upper side of the latch mechanism portion 34, a vibration damping engagement portion 37 is provided in which the inner plate 23 of the door panel body 20 is formed in a concave shape. On the other hand, on the other side member 32b of the machine body side frame 32, a vibration damping engagement portion 37 and a vibration damping plunger 38 that can be freely engaged and disengaged with the opening and closing of the door panel body 20 are attached via an attachment plate 39.

  FIGS. 1 to 5 show the structure of the hinge 31. The hinge 31 is a single one-side hinge formed in the frame direction on the side fixed to the one side member 32a of the frame 32 on the airframe side. Plate 41, a plurality of shaft members 42 in which a rotation center axis is arranged on the same straight line along the longitudinal direction at one end portion in the longitudinal direction of one hinge plate 41 and the other end portion thereof, and these A plurality of other hinge plates 43 to which the door panel main body 20 is attached are pivotally supported by the shaft member 42 so as to be openable and closable with respect to the one hinge plate 41.

  On the other hand, the hinge plate 41 is formed by bending a bearing plate portion 45 with respect to the flat frame contact plate portion 44, and is integrally formed at one end portion and the other end portion through a central notch portion 46 of the bearing plate portion 45. The plurality of bearing ring portions 47 and the plurality of bearing ring portions 48 integrally formed with the plurality of other hinge plates 43 are alternately fitted, and the shaft member 42 is inserted into these bearing ring portions. Yes.

  On the other hand, the frame contact plate portion 44 of the hinge plate 41 is provided with elongated holes 51, 52, 51 for inserting fastening bolts at one end, the center and the other end, as shown in FIG. By means of the fastening bolts 53, 54, 53 inserted into the elongated holes 51, 52, 51, the frame contact plate portion 44 can be fixed to the one side member 32a of the frame 32 on the fuselage side and can be relaxed. It has become.

  Further, as shown in FIG. 16, the upper and lower other hinge plates 43 are formed with bearing plate portions 57 with respect to the panel contact plate portions 55, for fixing the door panel body 20 to the panel contact plate portions 55. Bolt insertion holes 58 are formed, and the bearing ring portion 48 is integrally formed with the bearing plate portion 57.

  Next, the attachment structure of the hinge 31 to this door panel main body 20 is demonstrated, referring FIG. 15 and FIG.

  As shown in FIG. 15, an internal reinforcing plate 61 is bonded between one side portion of the outer plate 21 and the inner plate 23, and a nut 62 welded to the back surface of the inner reinforcing plate 61, as shown in FIG. Thus, the other hinge plate 43 of the hinge 31 located on the hinge attachment surface portion 64 of the inner plate 23 is attached by the bolt 63 screwed into the nut 62. On the other hand, a washer 65 is interposed between the hinge plate 43 and the head of the bolt 63.

  Then, through this washer 65, the bolt 63 inserted into the bolt insertion hole 58 of the hinge 31 and the bolt insertion hole 66 drilled in the hinge mounting surface portion 64 of the inner plate 23 is integrated with the back surface of the internal reinforcing plate 61. The hinge 31 is attached by screwing onto the nut 62.

  In FIG. 15, the peripheral portion 25 a of the outer plate 21 is bent so that the peripheral portion of the inner plate 23 can be fitted, and the hemming portion 25 is formed by folding and crushing this. . Further, the latch mechanism 34 is mounted in the latch mounting hole 33a of the outer plate 21 and the latch mounting hole 33b of the inner plate 23 shown in FIG.

  Next, when the side door 17 is attached to the fuselage-side frame 32 using the hinge 31 attached to the side door 17 in this way, as shown in FIG. The fastening bolts 53, 54, 53 inserted into the first and second members 52, 51 are screwed into and fastened with nut members provided on the one side member 32a of the frame 32. At that time, the fastening bolts 53, With the 54 and 53 loosened, move the door panel body 20 within the range where these fastening bolts 53, 54 and 53 can move inside the long holes 51, 52 and 51, and finely adjust the mounting position of the door panel body 20 To do.

  Next, as shown in FIGS. 1 to 5, a hinge plate opening angle regulating mechanism that locks the opening operation of the other hinge plate 43 with respect to the one hinge plate 41 at a certain angle from the one hinge plate 41 to the other hinge plate 43. 71 is provided.

  This hinge plate opening angle restricting mechanism 71 has a guide hole 72 formed in one hinge plate 41 that is elongated in the vertical direction, and a guide plate 73 that is a plate member different from the one hinge plate 41 includes an inner welded portion 73a and an outer welded portion 73a. An open side pocket portion 75 having a concave storage portion 74 is bent from the lower portion of the guide plate 73 and is integrally formed by a welded portion 73b. From the upper edge of the pocket portion 75 to the outside of the pocket portion 75 The guide portion 76 is bent downwardly, and the integrally formed bracket portion 77 is bent on the guide plate 73 side at the upper edge of the other lower hinge plate 43. The vertical axis 79a of the L-shaped rod 79 is loosely fitted in the shaft hole 78 of the bracket part 77 so as to be rotatable and slidable in the vertical direction. The horizontal shaft 79b of the L-shaped rod 79 has a guide plate 73 In the guide hole 72 At the tip of the L-shaped rod 79, the L-shaped rod 79 moves together with the L-shaped rod 79 by the opening operation of the other hinge plate 43 relative to the one hinge plate 41 and falls into the pocket 75 from the guide portion 76. A stop plate portion 80 is integrally attached.

  Next, functions and effects of the embodiment shown in FIGS. 1 to 16 will be described.

  6 to 10 show a series of movements of the hinge 31 when the door panel main body 20 is opened. FIG. 6 shows a state in which the door panel main body 20 is closed, and FIG. 7 shows a state in which the door panel main body 20 is opened by 20 °. 8 shows a state in which the door panel body 20 is opened by 40 °, FIG. 9 shows a state in which the door panel body 20 is opened by 60 °, and FIG. 10 shows a state in which the door panel body 20 is opened by 90 °. is there.

  As shown in FIGS. 6 to 10, when the door panel body 20 is opened, the L-shaped rod 79 that is still fitted in the guide hole 72 of the guide plate 73 is relatively horizontal to the other hinge plate 43. While rotating, it moves so as to slide on the uppermost part of the guide part 76.

  As shown in FIGS. 10 and 11, when the door panel body 20 is fully opened, the locking plate portion 80 is movable upward together with the L-shaped rod 79 loosely fitted in the shaft hole 78 of the bracket portion 77. After the climbing gradient of the guide portion 76 is raised, it falls from the uppermost portion of the guide portion 76 to the storage portion 74 in the pocket portion 75 along the guide hole 72 in the vertical direction. By restricting the movement, the opening / closing operation of the other hinge plate 43 can be locked via the L-shaped rod 79. That is, the opening / closing operation of the door panel body 20 attached to the other hinge plate 43 can be locked.

  When releasing the locking action in the fully open state, the L-shaped rod 79 loosely fitted in the shaft hole 78 of the bracket portion 77 is pushed up along the guide hole 72, and the locking plate portion 80 is moved to the uppermost portion of the guide portion 76. By moving further upward, it is possible to release from the storage portion 74 in the pocket portion 75 and to move the other hinge plate 43 in the closing direction. That is, the door panel body 20 attached to the other hinge plate 43 can be closed.

  When the door panel body 20 is closed, as shown in FIG. 14, the latch mechanism 34 of the door panel body 20 moves toward the striker 36 protruding from the other side member 32b of the frame 32, and the hook metal fitting of the striker 36 is used. Restrained. At the same time, the vibration damping plunger 38 provided on the frame 32 side is fitted into the concave vibration damping engagement portion 37 provided on the vertical surface portion 20a of the door panel main body 20, and the vertical vibration of the door panel main body 20 is restricted. Is done.

  The door panel body 20 can be reduced in weight by a hollow closed cross-sectional structure formed by the outer plate 21 and the inner plate 23 thinner than the outer plate 21, and the inner plate 23 and the thicker outer plate 21 The formed hollow closed cross-sectional structure having a sufficient height can provide a robust door panel main body 20 that can secure sufficient strength against an impact from the outside at a low cost, and further includes the outer plate 21 and the inner plate 23. With the foam material 24 filled between the two, the sound generated from the door panel body 20 itself can be effectively attenuated, and the noise can be effectively reduced.

  Further, the hinge plate opening angle regulating mechanism 71 that locks the opening operation of the other hinge plate 43 with respect to the one hinge plate 41 at a certain angle is provided from the one hinge plate 41 to the other hinge plate 43. In short, the one and the other hinge plate Since 41 and 43 also serve as brackets 19a, 19b and 19d (see FIGS. 20 to 22) of the hold mechanism 19 provided on the conventional frame and door side, a bracket is added to the frame 32 and door panel body 20 on the fuselage side. There is no need to install, and additional parts and their welding processes can be prevented from occurring.

  Further, since the L-shaped rod 79 is always fitted in the guide hole 72 of the guide plate 73 of the one hinge plate 41 and is not connected to the bracket portion 77 of the other hinge plate 43, the L-shaped rod 79 is not closed. Even if a large vibration occurs during operation, no additional parts are required to prevent the dropout, and when the door is opened, the locking plate 80 provided at the tip of the L-shaped rod 79 together with the L-shaped rod 79 Since it moves and gets over the guide part 76 and falls into the pocket part 75, the fixing function automatically works in conjunction with the door fully open operation, and the door open state of the door panel body 20 is automatically set at the fully open angle. Can hold. Furthermore, with these configurations, the scale of the parts can be reduced as compared with the conventional hold mechanism 19, so that the hinge 31 can be compactly accommodated.

  In particular, the longitudinal axis 79a of the L-shaped rod 79 is loosely fitted in the shaft hole 78 of the bracket part 77 provided integrally with the other hinge plate 43 so as to be freely rotatable and vertically slidable. The structure of the mechanism 71 can be simplified, the cost can be reduced, and the strength can be easily changed based on the structure in which the L-shaped rod 79 can be easily attached and detached.

  Furthermore, since the guide plate 73 in which the pocket portion 75 and the guide portion 76 are sequentially bent is welded to the hinge plate 41, the hinge plate opening angle regulating mechanism 71 can be easily manufactured, and the cost can be reduced.

  Further, since the other hinge plate 43 is pivotally supported on the long one hinge plate 41 by a plurality of shaft members 42 arranged on the same straight line so as to be freely opened and closed, the two hinges are integrated. There is no need for adjustment between the two hinges, and the fine adjustment of the door mounting state can be facilitated. On the other hand, the hinge plate 41 can be attached to the frame 32 by three fastening bolts 53, 54, 53. The number can be reduced, the workability of attachment by the hinges 31 can be improved, and fine adjustment of the door attachment state can be facilitated.

  In particular, when the door panel body 20 is moved around the center fastening bolt 54, the attachment angle and the attachment position of the door panel body 20 can be easily finely adjusted. That is, by loosening the fastening bolt 54 that fixes the central portion of the hinge plate 41, the other one of the hinge plates 41 arranged at one end and the other end of the hinge plate 41 with the fastening bolt 54 as a fulcrum, respectively. The hinge plate 43 can be movably adjusted to finely adjust the mounting position of the integrated door panel body 20, and the door panel body 20 can be mounted smoothly.

  Furthermore, since the long one-side hinge plate 41 serves as a plate for integrating a plurality of hinges, there is no need to weld plates between the hinges in order to integrate the plurality of hinges. Compared with such a welded product, the welding process can be omitted and the rigidity can be improved.

  Also, by filling the foam material 24 between the outer plate 21 and the inner plate 23 to reduce the weight of the door panel body 20 and improve the vibration absorption performance, the load acting on the hinge 31 can be reduced. 31 durability can be improved.

  Next, FIG. 17 shows another embodiment, in which a guide plate 73A having a guide hole 72a of the hinge plate opening angle regulating mechanism 71 is formed by a member integral with the hinge plate 41, and this guide plate 73A A pocket portion 75p in which the side surface portion 75s is formed in a closed shape by a separate member is integrated by a welded portion 75w welded to the guide plate 73A, and the guide portion 76 is bent from the upper edge of the pocket portion 75p. Has been. The other configuration is the same as the configuration shown in FIG.

  According to another embodiment shown in FIG. 17, the pocket portion 75p formed by a separate member is welded to the guide plate 73A formed by a member integral with the one hinge plate 41. As shown in FIG. 1, a pocket portion 75p having a shape difficult to manufacture by integral molding with the guide plate 73 can be retrofitted.

  Next, FIG. 18 shows still another embodiment, and the positions of the bracket portion 77 and the shaft hole 78 for mounting the longitudinal axis portion 79a of the L-shaped rod 79 are not limited to the fixed positions. From the position indicated by the two-dot chain line, the horizontal axis of the L-shaped rod 79 from the bolt insertion hole 63h for attaching the door panel formed in the other hinge plate 43, as shown by the bracket portion 77a and the shaft hole 78a indicated by the solid line You may move to the position where the part 79b is extended.

  The hinge plate opening angle regulating mechanism 71 may be a mechanism in which a plurality of links are foldable from one hinge plate 41 to the other hinge plate 43 in addition to the illustrated slide type.

  The door device according to the present invention can be used for a side door and a rear door of a working machine such as a hydraulic excavator.

It is a perspective view showing one embodiment of a door device concerning the present invention. It is a perspective view which shows the principal part of a door apparatus same as the above. It is a perspective view which shows the hinge of a door apparatus same as the above. It is a front view which shows the hinge of a door apparatus same as the above. It is a side view which shows the hinge of a door apparatus same as the above. It is a top view which shows the hinge of the closed state of a door apparatus same as the above. It is a top view which shows the hinge of a 20 degree open state of a door apparatus same as the above. It is a top view which shows the hinge of a 40 degree open state of a door apparatus same as the above. It is a top view which shows the hinge of a 60 degree open state of a door apparatus same as the above. It is a top view which shows the hinge of a 90 degrees full open state of a door apparatus same as the above. It is sectional drawing which shows the hinge of a locked state at the time of full open of a door apparatus same as the above. It is a top view of the working machine provided with the door device same as the above. It is sectional drawing of the door panel main body of a door apparatus same as the above. It is a perspective view from the inside of a door apparatus same as the above. It is a disassembled perspective view of the door panel main body of a door apparatus same as the above. It is sectional drawing of the hinge attachment part of a door apparatus same as the above. It is a perspective view which shows other embodiment of a door apparatus same as the above. It is a perspective view which shows another embodiment of a door apparatus same as the above. It is a perspective view of the working machine provided with the conventional door apparatus. It is a perspective view which shows the door open state of the conventional door apparatus. It is a perspective view which shows the accommodation state of the conventional hold mechanism. It is a perspective view which shows the use condition of the conventional hold mechanism.

Explanation of symbols

20 Door panel body
21 Outer plate
23 Inner plate
24 Foam
31 Hinge
32 frames
41 One hinge plate
42 Shaft member
43 Other hinge plate
71 Hinge plate opening angle restriction mechanism
72 Guide hole
73 Guide plate
73a weld
73b weld
74 compartment
75 Pocket
76 Guide
77 Bracket section
78 Shaft hole
79 L-shaped rod
79a Vertical axis
79b Horizontal axis
80 Locking plate

Claims (5)

The door panel body,
It has a hinge attached to one side of this door panel body,
This hinge
One hinge plate fixed to the frame;
The other hinge plate, which is pivotally supported by the one hinge plate so as to be opened and closed via a shaft member, and which attaches the door panel body,
A hinge plate opening angle regulating mechanism that is provided from one hinge plate to the other hinge plate and that locks the opening operation of the other hinge plate with respect to the one hinge plate at a certain angle;
This hinge plate opening angle regulating mechanism is
On the other hand, a guide plate that is provided on the hinge plate and has a guide hole that is elongated in the vertical direction;
A pocket portion having a concave storage portion provided in the guide plate;
A guide portion provided at a downward slope from the upper end edge of the pocket portion toward the outside of the pocket portion;
A bracket portion having a horizontal shaft hole provided integrally with the other hinge plate;
An L-shaped rod in which the vertical axis is freely fitted in the shaft hole of the bracket part so as to be rotatable and vertically slidable, and the horizontal shaft part is slidably fitted in the guide hole of the guide plate;
A locking plate portion that is provided at the tip of the horizontal shaft portion of the L-shaped rod and moves together with the L-shaped rod by the opening operation of the other hinge plate with respect to the one hinge plate and falls into the pocket portion from the guide portion. A door device characterized by that. The guide plate of the hinge plate opening angle regulating mechanism is one in which one hinge plate and another plate member are integrated into one hinge plate by a welded portion,
The pocket part is bent from the bottom of this guide plate,
The door device according to claim 1, wherein the guide portion is bent from an upper end edge of the pocket portion. The guide plate of the hinge plate opening angle regulating mechanism is formed by a member integral with the hinge plate,
The pocket part is formed by a member separate from this guide plate and welded to the guide plate,
The door device according to claim 1, wherein the guide portion is bent from an upper end edge of the pocket portion. On the other hand, the hinge plate is a single hinge plate that is formed long in the frame direction on the side fixed to the frame.
The shaft member is a plurality of shaft members in which a rotation center axis is arranged on the same straight line along the longitudinal direction at one side of the longitudinal direction of the one hinge plate and one side of the other end.
The door device according to any one of claims 1 to 3, wherein the other hinge plate is a plurality of hinge plates pivotally supported by these shaft members so as to be openable and closable with respect to the one hinge plate. The door panel body
An outer plate,
An inner plate fixed to the inner surface of the outer plate;
The door device according to any one of claims 1 to 4, further comprising: a foam material filled between the outer plate and the inner plate.

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