JP2010158969A - Hinge and door device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hinge for reliably holding a door open state without requiring additional mounting of a bracket on a frame and a door member. <P>SOLUTION: One hinge plate 41 rotatably supports thereon the other hinge plate 43 by a shaft member 42 in an openable and closable manner. A bracket section 77 is formed integrally with the upper edge of an end of the other hinge plate 43, which is located on the side opposite the side on which the shaft member 42 is mounted, and a vertical shaft section 79a of a hold-stay rod 79 is loosely fitted in a shaft hole 78 in the bracket section 77 so as to be pivotable and vertically slidable. A horizontal shaft section 79b of the hold-stay rod 79 is slidably inserted in a guide hole 73H in a guide plate 72 welded to the hinge plate 41, and an locking section 79c is formed by bending at the front end of the hold-stay rod 79. When the other hinge plate 43 is opened, the engaging section 79c is moved from a guide section 76 to a receiving plate section 74 and inserted into an engaging hole 75. The engaging section 79c is removed from the engaging hole 75 by pushing the engaging section up by a finger. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a hinge for attaching a door panel body to a frame, and a door device that can be opened and closed by the hinge.

  FIG. 18 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. 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.

  The conventional hold mechanism 19 shown in FIGS. 19 to 21 is configured such that, when the side door 17 is closed, between the holes of the brackets 19a and 19b added to the upper swing frame 12f as shown in FIG. A stay (round bar) 19s that is bent into a character is housed so as to be hung, and when the side door 17 is opened, a hole of a bracket 19a added to the upper revolving 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).

JP 9-315347 A (page 3-4, FIG. 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. 19 to 21, 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 these points, and an object of the present invention is to provide a hinge that can reliably hold the door open state without adding a bracket to the frame or door member. An object of the present invention is to provide a door device that can reliably hold an open state.

  According to the first aspect of the present invention, there is provided one hinge plate fixed to the frame, the other hinge plate which is provided so as to be openable and closable with respect to the one hinge plate, and which attaches the door panel body, and the other hinge plate is connected to the one hinge plate. And 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. The hinge plate opening angle regulating mechanism includes a guide plate provided integrally with the hinge plate, a guide hole that is elongated at least in the vertical direction of the guide plate, and a guide plate below the guide hole. A receiving plate portion integrally provided in the horizontal direction, and the receiving plate portion An engagement hole that is drilled, a guide portion that is continuously inclined downward toward the opposite side of the guide plate through the engagement hole, and the other hinge plate that is integrally provided in the horizontal direction. A bracket portion having a shaft hole and a hold stay rod provided between the shaft hole of the bracket portion and the guide hole of the guide plate are provided. The hold stay rod is free to play perpendicular to the shaft hole of the bracket portion. The fitted vertical axis, the horizontal axis provided horizontally to the vertical axis and slidably inserted into the guide hole of the guide plate, and the tip of the horizontal axis bent vertically downward A hinge having an engaging portion that is formed by the opening operation of the other hinge plate with respect to the one hinge plate, moves from the guide portion to the receiving plate portion, is inserted into the engagement hole, and can be taken out from the engagement hole. It is.

  According to a second aspect of the present invention, the bracket portion of the hinge according to the first aspect is disposed at the end of the other hinge plate opposite to the mounting side of the shaft member.

  According to a third aspect of the present invention, the guide hole in the hinge according to the first or second aspect has a vertical hole portion formed in the vertical direction of the guide plate, and a receiving plate from the lower portion of the vertical hole portion toward the hinge plate. And a horizontal hole provided along the portion.

  According to a fourth aspect of the present invention, the guide hole in the hinge according to the third aspect is provided with an oblique hole portion formed by obliquely cutting the inner corner portion of the vertical hole portion and the horizontal hole portion.

  According to a fifth aspect of the present invention, there is provided a flat frame contact plate portion in which the one hinge plate of the hinge according to any one of the first to fourth aspects is contacted and fastened to the frame, and the frame contact A bearing plate portion that is bent with respect to the plate portion, and a plurality of bearing ring portions that are integrally formed on the bearing plate portion and fitted to the shaft member, and the other hinge plate is for fixing the door panel body Panel abutment plate portion and a plurality of bearing ring portions integrally molded with the panel abutment plate portion and fitted to the shaft member alternately with the bearing ring portion of the one hinge plate. A contact plate portion and a bearing plate portion are provided with protruding end portions formed by projecting in a longitudinal direction from bearing ring portions of one hinge plate and the other hinge plate.

  The invention described in claim 6 includes a door panel main body and the hinge according to any one of claims 1 to 5 in which one side of the door panel main body is attached to a frame. The door panel main body includes an outer plate and an outer plate. The door device includes an inner plate fixed to an inner surface of the plate and a foam material filled between the outer plate and the inner plate.

  According to the first aspect of the present invention, the hinge plate opening angle regulating 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, and On the other hand, since the hinge plate also serves as a bracket for a conventional opening mechanism for holding a door opening angle provided on the frame or door side, it is not necessary to additionally install a bracket on the frame or door panel main body, and the generation of additional parts can be prevented. In particular, since the hold shaft is always inserted in the guide hole of the guide plate of the one hinge plate while the vertical axis portion is fitted in the shaft hole of the bracket portion of the other hinge plate, Even if a large vibration occurs when the door is closed, no additional parts are required to prevent it from falling off, and when the door is opened, the locking part provided at the tip of the hold stay rod moves together with the hold stay rod. Since it falls into the engagement hole so as to smoothly ride on the receiving plate portion, the fixing function automatically works in conjunction with the door full opening operation, and the door open state can be automatically maintained at the full open angle. At this time, since the locking portion formed by bending the tip of the horizontal shaft portion of the hold stay rod vertically downward is dropped into the engagement hole, the locking portion is fixed unless the locking portion is pulled out. The portion is not pulled out from the engagement hole, and the open state of the door panel main body can be reliably held. Furthermore, with these configurations, the scale of the parts can be reduced compared to the conventional hold mechanism, so that it can be stored compactly in the hinge, and the vertical axis portion of the hold stay rod is placed on the other hinge plate. Since it is loosely fitted into the shaft hole of the bracket part provided integrally, the structure of the hinge plate opening angle regulating mechanism can be simplified, and the cost can be reduced and the strength can be easily changed based on the structure for easily attaching and detaching the hold stay rod. Can do.

  According to the second aspect of the present invention, the bracket portion is disposed at the end of the other hinge plate on the side opposite to the mounting side of the shaft member, and the vertical portion of the hold stay rod is placed in the shaft hole of the bracket portion. Since it is loosely fitted, the holding force of the hold stay rod against the force of closing the door panel main body can be improved by arranging the vertical axis portion of the hold stay rod at the position farthest from the shaft member.

  According to the invention described in claim 3, since the guide hole is provided with the horizontal hole portion along the receiving plate portion from the lower portion of the vertical hole portion formed in the vertical direction of the guide plate toward the one hinge plate, It is possible to smoothly cope with a change in the horizontal angle when the horizontal shaft portion of the hold stay rod slides in the axial direction within the guide hole, and the smooth operation of the hold stay rod can be ensured. In particular, the horizontal shaft tends to swing toward the hinge plate after the closing operation starts when the door is closed, but the horizontal hole does not interfere with the movement of the horizontal shaft, so the holdstay rod can operate smoothly. It can be secured.

  According to the fourth aspect of the present invention, since the inner corners of the vertical hole part and the horizontal hole part of the guide hole are cut obliquely to form the oblique hole part, the locking part of the hold stay rod is located on the receiving plate part. When the horizontal axis portion of the hold stay rod descends along the guide portion while sliding in the horizontal direction on the guide portion, the horizontal axis portion of the hold stay rod can move smoothly along the oblique hole portion while moving in the horizontal direction. .

  According to the fifth aspect of the present invention, along the folding line between the frame contact plate portion and the bearing plate portion at the processing stage of bending the frame contact plate portion and the bearing plate portion of the one hinge plate. In particular, the tip of the broken line is weak against the load acting from the side, so that the frame contact plate and bearing plate of the hinge plate are connected to the bearing ring fitted to the shaft member. By projecting in the longitudinal direction from the part, the tip part of the broken line is formed far away, and the load of the door panel body acts on the one hinge plate from the other hinge plate through the shaft member and the bearing ring part. It is possible to disperse the stress at the time, weaken the load stress acting on the tip of the broken line, reduce the stress concentration at this place, and improve the durability of the tip of the broken line.

  According to the sixth aspect of the present invention, the load acting on the hinge is obtained 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.

It is a perspective view at the time of the door opening which shows one Embodiment of the hinge of the door apparatus which concerns on this invention. It is a perspective view at the time of the door closing of a hinge same as the above. It is a principal part one-way perspective view of a hinge same as the above. It is a principal part other direction perspective view of a hinge same as the above. It is a top view of a hinge same as the above. It is a top view which shows the operating locus of a hinge same as the above. It is a top view of the working machine provided with the door device same as the above. It is a perspective view from the inside of a door apparatus 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 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 at the time of the door opening which shows other embodiment of the hinge of the door apparatus which concerns on this invention. It is a perspective view at the time of the door closing of a hinge same as the above. It is a principal part perspective view of a hinge same as the above. It is a top view of a hinge same as the above. It is a top view which shows the operating locus of a hinge same as the above. It is a principal part perspective view which shows another embodiment of the hinge of the door apparatus which concerns on this invention. 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.

  Hereinafter, the present invention will be described in detail with reference to one embodiment shown in FIGS. 1 to 11 and another embodiment shown in FIGS.

  FIG. 7 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.

  As shown in FIG. 8, 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. Installed on. 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 frame 32 on the machine body side, 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.

  FIG. 9 shows a door panel main body 20 of the side door 17. The door panel main body 20 is formed on the inner surface of the outer plate 21 by press-molding an outer plate 21 and a sheet metal having a thickness smaller than that of the outer plate 21 into an uneven shape. 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.

  10 and 11 show a structure for attaching the hinge 31 to the door panel main body 20. As shown in FIG. 10, an internal reinforcing plate 61 is bonded between one side portions of the outer plate 21 and the inner plate 23. The hinge 31 positioned on the hinge mounting surface portion 64 of the inner plate 23 is attached by a nut 62 welded to the back surface of the reinforcing plate 61 and a bolt 63 screwed to the nut 62 as shown in FIG. ing. A washer 65 is interposed between the hinge 31 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. 10, the peripheral edge portion 25a of the outer plate 21 is bent so that the peripheral edge portion of the inner plate 23 can be fitted. .

  FIGS. 1 to 6 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 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 And a plurality of other hinge plates 43 to which the door panel main body 20 is attached, which are pivotally supported to the one hinge plate 41 by the shaft member 42.

  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. 11, the upper and lower other hinge plates 43 are formed integrally with a panel contact plate portion 55 on the bearing ring portion 48, and the door panel body 20 is fixed to the panel contact plate portion 55. Bolt insertion holes 58 are formed.

  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.

  In this hinge plate opening angle regulating mechanism 71, the base end of a guide plate 72 made of a plate member different from the one hinge plate 41 is integrated with one hinge plate 41 by an inner welded portion 72a and an outer welded portion 72b. A rod insertion plate portion 73 is integrally formed on the guide plate 72, and a guide hole 73H is formed at least vertically in the rod insertion plate portion 73. The lower portion of the rod insertion plate portion 73 The receiving plate portion 74 is integrally bent in the horizontal direction, and an engagement hole 75 is formed in the receiving plate portion 74, and faces the opposite side of the rod insertion plate portion 73 through the engagement hole 75. Thus, the guide portion 76 is continuously inclined downward.

  Further, the hinge plate opening angle restricting mechanism 71 has an integrally formed bracket portion 77 on the guide plate 72 side on the upper edge portion of the lower hinge plate 43 on the opposite side to the mounting side of the shaft member 42. A horizontal bent portion is provided, and a vertical axis portion 79a of a hold stay rod 79 is loosely fitted in a shaft hole 78 of the bracket portion 77 so as to be vertically rotatable and vertically slidable.

  A horizontal shaft portion 79b provided horizontally with respect to the vertical axis portion 79a of the hold stay rod 79 is slidably inserted into a guide hole 73H of the guide plate 72. When the other hinge plate 43 is opened with respect to the hinge plate 41, it is moved from the guide portion 76 to the receiving plate portion 74 and inserted into the engagement hole 75, and can be removed from the engagement hole 75 by a fingertip push-up operation or the like. The portion 79c is formed by vertically bending downward.

  As shown in FIG. 4, the guide hole 73H of the guide plate 72 has a vertical hole portion 73Ha formed in the vertical direction of the rod insertion plate portion 73, and a receiving plate portion from the lower portion of the vertical hole portion 73Ha toward the hinge plate 41. And a horizontal hole 73Hb provided along 74.

  Next, the function and effect of the embodiment shown in FIGS. 1 to 6 will be described.

  6 shows a series of movements of the hinge 31 when the door panel body 20 is opened and closed. As shown in FIG. 6, when the door panel body 20 is opened, it remains inserted into the guide hole 73H of the guide plate 72. The hold stay rod 79 is rotated in the horizontal direction with the longitudinal axis portion 79a inserted into the shaft hole 78 of the bracket portion 77 as a fulcrum, and is lifted while the locking portion 79c is pushed up by the guide portion 76. It slides and moves onto the receiving plate portion 74.

  As shown in FIGS. 3 to 5, when the door panel body 20 is fully opened, the locking portion 79 c of the hold stay rod 79 that has increased the climbing gradient of the guide portion 76 is engaged with the engagement hole 75 of the receiving plate portion 74. Therefore, the movement of the hold stay rod 79 with respect to the one hinge plate 41 is restrained, and the opening / closing operation of the other hinge plate 43 can be locked via the hold stay 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 opened state, the locking portion 79c side of the hold stay rod 79 is pushed up along the vertical hole portion 73Ha, and the locking portion 79c is taken out from the engaging hole 75 to lock the holding state. And the other hinge plate 43 can be moved in the closing direction. That is, the door panel body 20 attached to the other hinge plate 43 can be closed.

  When closing the hinge 31 together with the door panel main body 20, as shown in FIG. 6, the locking portion 79c of the hold stay rod 79 slides so as to rotate in the horizontal direction while descending along the guide portion 76. However, at this time, the horizontal shaft portion 79b of the hold stay rod 79 descends along the vertical hole portion 73Ha and can move in the horizontal direction along the horizontal hole portion 73Hb.

  For this reason, the horizontal shaft portion 79b of the hold stay rod 79 can smoothly respond to a change in the horizontal angle when sliding in the axial direction in the guide hole 73H, and the smooth operation of the hold stay rod 79 can be ensured. In particular, the horizontal shaft 79b tends to swing toward the one hinge plate 41 after the closing operation starts when the door is closed, but the horizontal hole 73Hb does not hinder the movement of the horizontal shaft 79b. Smooth operation can be ensured.

  When the door panel body 20 is closed, as shown in FIG. 8, 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 of the striker 36 Restrained by metal fittings. 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. 19 to 21) 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.

  In particular, in the hold stay rod 79, the horizontal shaft portion 79b is always inserted into the guide hole 73H of the guide plate 72 of the one hinge plate 41, and the vertical shaft portion 79a is the shaft hole 78 of the bracket portion 77 of the other hinge plate 43. Since it does not come off while being fitted in the door, no additional parts are required to prevent it from falling off even when a large vibration occurs when the door is closed (during operation), and it is provided at the tip of the hold stay rod 79 when the door is opened. Since the locking portion 79c moves together with the hold stay rod 79 and smoothly falls on the receiving plate portion 74 from the guide portion 76 and falls into the engagement hole 75, it is automatically linked with the door fully opening operation. The fixed function works in the door, and the door open state of the door panel body 20 can be automatically held at the full open angle.

  At this time, since the locking portion 79c formed by vertically bending the tip of the horizontal shaft portion 79b of the hold stay rod 79 is dropped into the engagement hole 75, the locking portion 79c is pulled out. Unless this is done, the locking portion 79c will not be pulled out of the engagement hole 75, and the open state of the door panel body 20 can be reliably held.

  Furthermore, with these configurations, the scale of the parts can be reduced as compared with the conventional hold mechanism 19, so that the size can be accommodated in the hinge 31 and the vertical axis 79a of the hold stay rod 79 can be reduced. On the other hand, since it is loosely fitted in the shaft hole 78 of the bracket part 77 provided integrally with the hinge plate 43, the structure of the hinge plate opening angle regulating mechanism 71 can be simplified, and the structure can be reduced and the hold stay rod 79 can be easily attached and detached. Easiness of intensity change based on this can be achieved.

  In addition, a bracket portion 77 is disposed at the end of the other hinge plate 43 opposite to the mounting side of the shaft member 42, and the vertical portion 79b of the hold stay rod 79 is loosely fitted into the shaft hole 78 of the bracket portion 77. Therefore, the support force of the hold stay rod 79 against the force for closing the door panel main body 20 can be improved by arranging the vertical axis portion 79a of the hold stay rod 79 at a position farthest from the shaft member 42.

  Further, since the guide plate 72 in which the engagement hole 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, another embodiment shown in FIGS. 12 to 16 will be described.

  As shown in FIGS. 12 to 15, in a door device including a door panel body 20 and a hinge 31 having one side of the door panel body 20 attached to a frame 32, the hinge 31 is fixed to the frame 32. One hinge plate 41, the other hinge plate 43 to which the door panel main body 20 is attached, which is provided so as to be openable and closable with respect to the one hinge plate 41, and a shaft for pivotally supporting the other hinge plate 43 with respect to the one hinge plate 41. A member 42 and a hinge plate opening angle regulating mechanism 71 provided from one hinge plate 41 to the other hinge plate 43 and locking the opening operation of the other hinge plate 43 with respect to the one hinge plate 41 at a constant angle are provided.

  The hinge plate opening angle regulating mechanism 71 includes a guide plate 72 provided integrally with the one hinge plate 41, a guide hole 73H that is elongated at least in the vertical direction of the guide plate 72, and a lower portion of the guide hole 73H. On the side, a receiving plate portion 74 integrally provided in the horizontal direction from the guide plate 72, an engagement hole 75 formed in the receiving plate portion 74, and the guide plate 72 through the engagement hole 75 A guide portion 76 continuously inclined downward toward the opposite side, a bracket portion 77 having a shaft hole 78 integrally provided in the horizontal direction from the other hinge plate 43, and a shaft hole 78 of the bracket portion 77 And a hold stay rod 79 provided between the guide plate 72 and the guide hole 73H of the guide plate 72.

  The hold stay rod 79 is vertically fitted in the vertical hole 79a perpendicularly to the shaft hole 78 of the bracket part 77, and is provided horizontally with respect to the vertical axis part 79a, and is slidable in the guide hole 73H of the guide plate 72. The horizontal shaft portion 79b inserted into the horizontal shaft portion 79 and the distal end of the horizontal shaft portion 79b are vertically bent downward, and the opening portion of the other hinge plate 43 with respect to the one hinge plate 41 opens the guide plate 76 to the receiving plate portion 74. And an engaging portion 79c that is inserted into the engaging hole 75 and can be taken out from the engaging hole 75.

  The bracket portion 77 is disposed at the end of the other hinge plate 43 opposite to the mounting side of the shaft member 42.

  Further, as shown in FIG. 14, the guide hole 73H includes a vertical hole portion 73Ha formed in the vertical direction of the guide plate 72 and a receiving plate portion 74 from the lower portion of the vertical hole portion 73Ha toward the hinge plate 41. In addition to these, a slant hole 73Hc formed by obliquely cutting the inner corners of the vertical hole 73Ha and the horizontal hole 73Hb is provided.

  Further, as shown in FIGS. 14 to 16, bulging portions 74 a and 76 a are extended from the receiving plate portion 74 of the guide plate 72 to the guide portion 76 on the one hinge plate 41 side.

  Then, as shown in FIG. 16, when closing the hinge 31 together with the door panel body 20, the locking portion 79c of the hold stay rod 79 is guided while sliding horizontally on the receiving plate portion 74 and the guiding portion 76. In this case, the horizontal shaft portion 79b of the hold stay rod 79 can be smoothly lowered along the inclined hole portion 73Hc while moving in the horizontal direction. At this time, the bulging portions 74a and 76a can reliably prevent the locking portion 79c of the hold stay rod 79 from dropping off from the sides of the receiving plate portion 74 and the guide portion 76.

  Next, still another embodiment shown in FIG. 17 will be described. In addition, the same code | symbol is attached | subjected to the part same as FIG. 3, and the description is abbreviate | omitted.

  On the other hand, the hinge plate 41 includes a flat frame contact plate 44 that is contacted and fastened to the frame 32, a bearing plate 45 that is bent with respect to the frame contact plate 44, A plurality of bearing ring portions 47 integrally formed with the bearing plate portion 45 and fitted to the shaft member 42 are provided.

  The other hinge plate 43 is formed integrally with the panel abutting plate 55 for fixing the door panel body 20 and the panel abutting plate 55, and is alternately formed on the shaft member 42 with the bearing ring portion 47 of the one hinge plate 41. A plurality of bearing ring portions 48 fitted to each other are provided.

  The one hinge plate 41 has projecting end portions 44a and 45a formed by projecting the frame contact plate portion 44 and the bearing plate portion 45 in the longitudinal direction from the bearing ring portions 47 and 48 of the one hinge plate 41 and the other hinge plate 43. It has.

  These protruding end portions 44a and 45a protrude downward from the lower ends of the frame contact plate portion 44 and the bearing plate portion 45 shown in FIG. The distance L is preferably about 20 mm, but is not limited.

  Corresponding to the arc-shaped portions 49a formed at the corners of the projecting ends 44a of the frame contact plate 44, the corners of the projecting ends 45a of the bearing plate 45 are cut obliquely. A formed chamfer 49b is provided to facilitate handling of the hinge 31. For this reason, the efficiency of the assembly work using this hinge 31 can also be improved.

  In the configuration of the embodiment shown in FIG. 17, the frame contact plate portion 44 and the bearing plate portion are processed at the stage of bending the frame contact plate portion 44 and the bearing plate portion 45 of the hinge plate 41. There is a risk that the strength will decrease along the broken line 50 between them, and among them, the tip of the broken line 50 is weak against the load acting from the side, so that the frame contact plate 44 of the hinge plate 41 and the bearing plate By projecting the portion 45 in the longitudinal direction from the bearing ring portions 47 and 48 fitted to the shaft member 42 to form the projecting end portions 44a and 45a, the tip position of the broken line 50 is separated by a distance L, Disperses the stress when the load of the door panel body 20 acts on the one hinge plate 41 from the other hinge plate 43 through the shaft member 42 and the bearing ring portions 47 and 48, and weakens the load stress acting on the tip of the broken line 50, This reduces stress concentration at this location, It is line can improve the durability of the tip portion 50, can be prevented and breakage of the crack.

  The hinge and 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.

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
44 Frame contact plate
44a Tip
45 Bearing plate
45a Tip
47 Bearing ring
48 Bearing ring
55 Panel contact plate
71 Hinge plate opening angle restriction mechanism
72 Guide plate
73H Guide hole
73Ha Vertical hole
73Hb side hole
73Hc Oblique hole
74 Catch plate
75 engagement hole
76 Guide
77 Bracket section
78 Shaft hole
79 Hold stay rod
79a Vertical axis
79b Horizontal axis
79c Locking part

Claims (6)

One hinge plate fixed to the frame;
The other hinge plate that can be opened and closed with respect to this one hinge plate,
A shaft member that pivotally supports the other hinge plate so as to be openable and closable with respect to the one hinge plate;
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 provided integrally with the hinge plate;
A guide hole formed elongated at least in the vertical direction of the guide plate;
A receiving plate portion integrally provided horizontally from the guide plate below the guide hole;
An engagement hole formed in the receiving plate,
A guide portion continuously inclined downward toward the opposite side of the guide plate through the engagement hole;
A bracket portion having a shaft hole integrally provided in the horizontal direction from the other hinge plate;
A hold stay rod provided between the shaft hole of the bracket portion and the guide hole of the guide plate;
This holdstay rod
A vertical axis portion that is loosely fitted perpendicularly to the shaft hole of the bracket portion;
A horizontal axis portion provided horizontally with respect to the vertical axis portion and slidably inserted into the guide hole of the guide plate;
It is formed by bending the tip of this horizontal shaft portion vertically downward, and when the other hinge plate opens with respect to one hinge plate, it moves from the guide portion to the receiving plate portion and is inserted into the engagement hole. A hinge comprising a locking portion that can be removed from the hole. The hinge according to claim 1, wherein the bracket portion is disposed at an end portion of the other hinge plate opposite to the shaft member mounting side. The guide hole
A vertical hole formed in the vertical direction of the guide plate;
The hinge according to claim 1, further comprising: a lateral hole portion provided along the receiving plate portion from the lower portion of the vertical hole portion toward the one hinge plate. The guide hole
The hinge according to claim 3, further comprising an oblique hole portion formed by obliquely cutting inner corner portions of the vertical hole portion and the horizontal hole portion. On the other hand, the hinge plate
A plate-like frame abutting plate portion that is abutted and fastened to the frame;
A bearing plate part bent with respect to the frame contact plate part;
A plurality of bearing ring portions molded integrally with the bearing plate portion and fitted to the shaft member;
On the other hand, the hinge plate
A panel contact plate portion for fixing the door panel body;
A plurality of bearing ring portions formed integrally with the panel contact plate portion and fitted to the shaft member alternately with the bearing ring portion of the hinge plate;
5. The hinge plate according to claim 1, further comprising a projecting end portion formed by projecting the frame contact plate portion and the bearing plate portion in the longitudinal direction from the bearing ring portions of the one hinge plate and the other hinge plate. Any one of the hinges. The door panel body,
The hinge according to any one of claims 1 to 5, wherein one side of the door panel body is attached to the frame,
The door panel body
An outer plate,
An inner plate fixed to the inner surface of the outer plate;
A door device comprising: a foam material filled between the outer plate and the inner plate.

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