JP4449636B2 - Opening and closing door fixing device - Google Patents

Description

  According to the present invention, in a construction machine such as a hydraulic excavator, an opening / closing door such as a side opening / closing cover of a machine room provided in an upper swing body is closed and locked. The present invention relates to an open / close door fixing device capable of suppressing swinging of an open / close door during operation of a machine.

  As an example of a construction machine, there is a hydraulic excavator. The hydraulic excavator is provided with a lower swinging body provided with a crawler belt or the like so that an upper swinging body can be swung, and the upper swinging body includes a front attachment such as a boom, an arm, and a bucket. A working mechanism is provided. In order to drive the hydraulic excavator, an engine and a hydraulic pump are provided, and devices such as a direction switching valve for controlling the direction of pressure oil from the hydraulic pump and a filter for removing foreign substances from the hydraulic oil are installed. Each of these devices is installed behind the part where the front working mechanism and the operator's cab are provided in the swing frame of the upper swing body. The machine room is covered with a cover.

  A part of the side cover of the machine room is a door that can be opened and closed. This side door can be used to inspect equipment, etc. installed in the machine room, and to repair any malfunctions. Be able to. The machine room is fixedly provided with a partition, a support for supporting the side cover, the upper cover, etc., and the side opening / closing door is provided with a rotating shaft in the vertical direction in the upper swing body. It is opened and closed so as to rotate around the rotation axis. The rotation shaft of the side opening / closing door is normally formed of a hinge and is opened and closed in the horizontal direction. The hinge is directly attached to a fixed wall portion or a bracket connected to the wall portion is attached as a support portion. The side opening / closing door must be kept closed at all times so that it can be opened as needed. For this reason, the end of the opening / closing side opposite to the pivotal fulcrum side of the side opening / closing door is not in a free state, but is provided with a lock mechanism that locks in a detachable manner. The lock mechanism is also provided with an opening / closing operation unit, and means for locking the opening / closing operation unit in an inoperable state.

  Thus, the lock mechanism is provided by connecting the hook member to an operation portion such as a handle that is rotatably provided on the open / close door, and on the other support portion provided inside the machine room. Conventionally, a structure in which a latch that engages with the fixed latch is provided is widely used. Here, since vibration is generated during the operation of the construction machine, the open / close door is held in the closed state by the lock mechanism, but cannot be stably held as it is, and vibrates in the vertical direction. Therefore, in order to prevent noises due to vibration of the opening / closing doors and damage to the opening / closing doors and hinges, etc., a configuration in which the opening / closing doors are provided with steadying means in addition to the lock mechanism has been widely used.

For example, in Patent Document 1, a locking member is provided on the flange of the partition plate fixed to the upper swing body, and a locking hole is provided on the opening / closing side of the opening / closing door so that the opening / closing door is closed. The locking hole is fitted to a locking member provided in the flange, and the engagement of the locking member and the locking hole suppresses vibration of the open / close door. The locking member has a tapered shape that becomes narrower toward the distal end side, and a tapered flange having substantially the same angle as the taper is formed in the locking hole.
JP 2001-262618 A

  By configuring the steadying means as described above, vibration when the machine is operated with the opening and closing door being closed is suppressed, noise reduction is achieved, and the opening and closing door and a member such as a hinge connected thereto are also provided. However, the configuration of Patent Document 1 is not without problems.

  That is, in order to eliminate the movement of the opening / closing door during the operation of the machine, the engagement between the above-described locking member and the locking hole should be a close-fitting shape. However, since the machine slides repeatedly between the locking member and the locking hole while operating for a long period of time, a gap is generated between them due to wear or the like, and this gap gradually increases. . As a result, the swing control function of the door is reduced, and not only is the noise increased, but the door swings up and down around the connection to the hinge so that the connection to the hinge There arises a problem that the shaft may be damaged or the shaft may be deformed.

  The present invention has been made in view of the above points, and an object of the present invention is to operate the swing door steadying means in a stable state over a long period of time, thereby suppressing the swing of the open / close door. This is to prevent the deformation and damage of the hinge.

In order to achieve the above-described object, the present invention closes an open / close door that is mounted on an upper swing body of a construction machine and is opened and closed at the other end side by rotating about a rotation shaft provided in a substantially vertical direction. A locking means for locking the opening / closing door in a closed state, and a swing prevention means for suppressing the opening / closing door from swinging vertically. And the steadying means protrudes from either one of the opening and closing door and the support member fixedly provided on the upper swing body , The stopper member is provided with a pair of upper and lower stopper members and a stopper receiver provided on the other side and having a contact surface with the upper and lower end surfaces of the protruding portions of both stopper members. The stopper receiver is fixedly disposed. Side stopper holder This is disposed in the position of the upper and lower sandwiching each stopper member to the fixed side stopper receiving, and composed of a vertically positionable adjustment side stopper receiving, each stopper member position adjusting in the vertical direction Its feature is that it can be fixed as possible.

  One side of the open / close door is connected to a support member of the upper revolving body via a hinge or the like, and becomes a rotation fulcrum side rotated about a vertical rotation axis, and the other end side is an opening / closing side that performs an opening / closing operation It becomes. The steadying means constituted by the stopper member and the stopper receiver is provided on the open side of the open / close door or in the vicinity of the end.

Usually, the stopper member is provided on the open / close door side, and the stopper receiver is provided on the support member side fixedly provided on the upper swing body, but this may be reversed. Moreover, as a support member, the support member of a locking means and the support member of a steadying means can also be shared, and it can also respectively comprise as a single support member. In any case, since the open / close door is opened and closed by rotating around the rotation axis, the stopper member formed in a convex shape is directed toward the engagement direction when closed in order to perform a smooth opening / closing operation. It is desirable to have a tapered surface shape that becomes narrower, and that the interval between the upper and lower stopper receivers is a tapered shape that becomes narrower as it goes to the back side. In order to stabilize the door, the stopper member shall be the configuration in which two positions vertically sandwiching the locking means. The stopper receiver provided between the stopper member on the upper side and the stopper member on the lower side can be shared with the upper and lower stopper members. The stopper receiver provided at the upper position of the stopper member on the side and the lower position of the stopper member on the lower side is configured to be adjustable.

  Here, as a specific configuration of the position-adjustable stopper member and the position-adjustable stopper receiver, it can be configured to be detachably fixed to the open / close door and the support member by bolts, respectively. In this case, the adjustable stopper member and the stopper receiver are formed with a bolt insertion hole having an opening larger than the outer diameter of the bolt at least in the vertical direction. As a result, when the gap between the stopper member and the stopper receiver increases due to wear or the like, the position of the stopper member is adjusted with the bolt loosened, and the bolt is tightened at that position. It is fixed in a state where it abuts on the receiver.

  According to the present invention, by adopting the above configuration, the open / close door provided in the construction machine can be stably held in the closed state, noise can be reduced, and deformation and damage of the hinge can be suppressed. There are effects such as being able to.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Here, in the following description, what is constituted as a side opening / closing door in a machine room of a hydraulic excavator is shown, but the present invention is not necessarily limited thereto.

  First, FIG. 1 shows an overall configuration of a hydraulic excavator as an example of a construction machine. In FIG. 1, reference numeral 10 denotes a lower traveling body, and the lower traveling body 10 is provided with a pair of left and right traveling means 11, 11 having crawler belts. An upper revolving unit 12 is installed on the lower traveling unit 10 so as to be able to turn. The upper turning body 12 is provided with a front working mechanism 13 including a boom 13a, an arm 13b, and a bucket 13c at a position on the front side thereof, and operations such as excavation of earth and sand are performed by the front working mechanism 13. Further, the bucket 13c in the front work mechanism 13 is detachably connected to the tip of the arm 13b, and work other than excavation can be performed by attaching another front attachment. A driver's cab 14 is provided adjacent to the front working mechanism 13, and the operator operates the operating means including a lever or the like provided in the driver's cab 14 in the driver's cab 14. The mechanism 13 and the like can be operated.

  This hydraulic excavator is driven by hydraulic pressure for traveling by the traveling means 11, turning of the upper swing body 12, and operation of the front working mechanism 13. For this purpose, the hydraulic excavator is provided with a hydraulic pump and an engine that drives the hydraulic pump. A hydraulic oil tank for supplying hydraulic oil to the hydraulic pump and a fuel tank for supplying fuel to the engine are also provided. Furthermore, a battery for supplying power to a direction switching valve for controlling the direction of the pressure oil from the hydraulic pump, devices such as filters, a control panel provided in the cab 14 and other electric devices is also mounted.

  The various devices and tanks described above are installed behind the cab 14 and the front work mechanism 13. Among these, the tanks can be installed in a state exposed to the outside, but at least each device other than the tanks is installed in a machine room 15 covered with a cover. The cover constituting the machine room 15 is made of a thin steel plate from the viewpoint of weight reduction and the like, and a partition made of a pillar or a thick steel plate is fixedly provided as a high-strength structural member at an appropriate position in the room. Some of the covers are fixedly attached to these structural members, but the other part of the covers can be opened and closed. This is because, when a failure occurs in various devices installed in the machine room 15, each device is inspected, and if necessary, measures such as repairs are taken. Therefore, a part of the side covers constituting the machine room 15 is configured as a side opening / closing door 16 that can be opened and closed. The side opening / closing door 16 is provided so as to be supported by the above-described structural member directly or by a support portion made of a bracket or the like connected to the structural member.

  FIG. 2 shows the configuration of the side opening / closing door 16. As is clear from this figure, a pair of upper and lower hinges 20, 20 are attached to one end of the side opening / closing door 16, and a screw 21 projects from one plate body of both the hinges 20. The screw 21 is fixed to a support portion 22 fixedly provided in the machine chamber 15 with a nut 23. Accordingly, the hinge 20 constitutes a pivot shaft provided in the vertical direction with respect to the frame of the upper swing body of the upper swing body 12, and the side opening / closing door 16 is rotated in the horizontal direction with the pivot shaft as a fulcrum. And can be opened outward with the support portion 22 as the center. That is, the side where the side opening / closing door 16 is connected to the support portion 22 via the hinge 20 is the rotation fulcrum position. A first reinforcing portion 24 is fixedly provided at an intermediate portion of the side opening / closing door 16, and is locked at a position on the distal end side (position far from the rotation fulcrum position) from the first reinforcing portion 24. A mechanism 25 is mounted, and a second reinforcing portion 26 is provided on the distal end side of the lock mechanism 25. Here, the first and second reinforcing portions 24 and 26 are hollow beam members having a U-shaped cross section, and have a length that covers almost the entire length of the side opening / closing door 16 in the vertical direction. It is. Further, an anti-sway means 27 is provided at the site of the second reinforcing portion 26. Accordingly, the lock mechanism 25 and the steadying means 27 constitute an open / close door fixing device.

  The side opening / closing door 16 is an opening / closing side that is opened and closed on the opposite side with the hinges 20 and 20 as the rotation fulcrum positions. When the side opening / closing door 16 is closed, the side opening / closing side of the side opening / closing door 16 is held in a closed state by the action of the lock mechanism 25, and the action of the steadying means 27 causes the side opening / closing by the vibration of the vehicle. The door 16 can be prevented from swinging up and down around the rotation fulcrum position of the hinge 20. For this purpose, a support 28 is fixedly provided on the frame of the upper swing body 12, and a lock mechanism 25 and an anti-sway means 27 are mounted between the end side of the side opening / closing door 16 and the support 28. .

  First, as shown in FIG. 3, the lock mechanism 25 is formed with a through hole at a predetermined position on the front end side of the side opening / closing door 16, and this through hole serves as an attachment hole 16a. A hook attachment portion 29 made of a thin metal plate is fixed to the hole 16a by welding means. A support shaft 30 is provided at an outer portion of the hook attachment portion 29, and a hook member 31 is rotatably supported on the support shaft 30, and a machine room is opened from an opening 29 a formed in the hook attachment portion 29. 15 protrudes to the inside. A spring 32 acts on the hook member 31, and an operation portion 33 is connected to the hook member 31. Accordingly, the hook member 31 and its operation portion 33 are urged by the spring 32 in the arrow direction A in FIG. 3, and when the operation portion 33 abuts on a locking projection 29 b provided on the hook attachment portion 29, Held in position. Further, the lock can be released by rotating the operation unit 33 in the B direction in the figure by manual operation or the like. The hook member 31 is formed with a locking portion 31a and a sliding portion 31b. The locking portion 31a is substantially parallel to the side opening / closing door 16, and the sliding portion 31b is a locking portion. It is inclined at an acute angle with respect to 31a.

  The hook member 31 provided on the side opening / closing door 16 is engaged with and disengaged from the latch 34 provided on the support 28. The latch 34 is formed by bending a metal plate, and a predetermined length on one end side thereof is an engagement / disengagement portion 34a that engages / disengages with the locking portion 31a of the hook member 31, and a predetermined length on the other end side. The length is a fixed portion 34b fixedly held by the support 28, and a connecting portion 34c is provided therebetween. The connecting portion 34c and the engaging / disengaging portion 34a and the fixing portion 34b are bent at substantially right angles, and the bending directions thereof are opposite directions. That is, the extending direction of the engaging / disengaging portion 34a and the extending direction of the fixing portion 34b are opposite to each other with the connecting portion 34c interposed therebetween. The latch 34 is fixedly attached to a mounting plate 35 provided by being fixed to the support 28 by welding means, using bolt-nut fixing means.

  Next, the structure of the steadying means 27 is shown in FIGS. This steadying means 27 is fixed at an intermediate portion provided on a stopper member 40 consisting of a pair of upper and lower parts attached to the second reinforcing part 26 in the side opening / closing door 16 and a mounting plate 41 fixed to the support 28 by means of welding or the like. It comprises a side stopper receiver 42 and an adjustment side stopper receiver 43 provided at a position spaced above and below the fixed side stopper receiver 42 by the approximate vertical dimension of the stopper member 40. Here, in the side opening / closing door 16 whose one end side is supported by a hinge 20 and whose other end is a free end, the free end side swings up and down around the hinge 20 basically. It is for restricting to do.

  As is apparent from FIG. 4, the stopper member 40 is disposed at two positions on the end side of the hook member 31 and on the upper and lower positions of the hook member 31. The tapered surfaces 40a and 40a are inclined at an angle. Therefore, the stopper member 40 has a trapezoidal shape when viewed from the side. On the other hand, an interval corresponding to the height dimension of the stopper member 40 is formed between the fixed side stopper receiver 42 provided on the mounting plate 41 and the upper and lower adjustment side stopper receivers 43, and the side opening / closing door 16 is closed. Then, the stopper member 40 provided on the side opening / closing door 16 enters the gap between the stopper receivers 42 and 43.

  When the hook member 31 and the latch 34 are engaged and the side opening / closing door 16 is closed, the upper and lower end surfaces of the stopper member 40 are in surface contact with the stopper receivers 42 and 43. For this purpose, the upper and lower end faces of the fixed-side stopper receiver 42, the lower surface of the upper-side adjustment-side stopper receiver 43, and the upper-end surface of the lower-side adjustment-side stopper receiver 43 are respectively tapered surfaces of the stopper member 40. Inclined tapered surfaces 42a and 43a are formed so as to correspond to 40a. Here, the taper surfaces 42a and 43a may be formed on the entire end surfaces of the stopper receivers 42 and 43. However, in the present embodiment, the taper surfaces 42a and 43a are provided in a state in which a bolt 44 described later projects from the end surface of the stopper member 40. Therefore, in order not to interfere with these, it is limited to only the portion where the stopper member 40 abuts.

  Thus, when the side opening / closing door 16 is closed, that is, when the hook member 31 in the lock mechanism 25 is engaged with the latch 34, the side opening / closing door 16 is locked in the opening / closing direction. Sometimes, the upper and lower tapered surfaces 40a of the stopper member 40 come into surface contact with the tapered surfaces 42a and 43a of the stopper receivers 42 and 43, so that the stopper member 40 and the side opening / closing door 16 to which the stopper member 40 is attached are free. The end is fixed so as not to swing in the vertical direction.

  Here, the reason why the stopper member 40 is sandwiched between the stopper receivers 42 and 43 is to restrict the open / close side of the side door 16 from swinging up and down around the hinge 20 when the vehicle vibrates. . Therefore, these are not formed of an elastic member such as rubber, but are each formed of a metal plate that is an incompressible member. A light and relatively soft material such as aluminum is preferably used. When the side door 16 is repeatedly opened and closed, the tapered surfaces 40a, 42a and 43a of the stopper member 40 and the stopper receivers 42 and 43 are worn. As a result, when the side opening / closing door 16 is closed, a gap is generated between the stopper member 40 and the stopper receivers 42 and 43, and the fixing function of the end of the side opening / closing door 16 is lowered.

  For this reason, as shown in FIGS. 5 and 6, the stopper member 40 and the adjustment-side stopper receiver 43 are adjusted with respect to the fixed-side stopper receiver 42, so that the stopper member and the stopper receiver are worn. When the gap is generated, the tapered surface can be restored to the surface contact state when the side opening / closing door 16 is closed. Specifically, the stopper member 40 and the adjustment-side stopper receiver 43 are fixed to the second reinforcing portion 26 and the mounting plate 41 of the side opening / closing door 16 by using bolts 44 at two locations on the upper and lower sides, respectively. For this purpose, a nut 45 is fixedly provided on the second reinforcing portion 26 and the mounting plate 41, and the stopper member 40 and the adjustment-side stopper receiver 43 are provided between the nut 45 and the head of the bolt 44. These stopper members 40 and the adjustment-side stopper receiver 43 are fixed by tightening them so as to sandwich them. After the bolt 44 is tightened, the bolt 44 is prevented from rotating by the washer 46.

  The stopper member 40 and the adjustment side stopper receiver 43 are provided with bolt insertion holes 40b, 43b, and the shaft portion 44a of the bolt 44 is inserted into the bolt insertion holes 40b, 43b. 43b is a hole which is elongated at least in the vertical direction from the outer diameter of the shaft portion 44a of the bolt 44. As a result, a predetermined adjustment allowance is given to the stopper member 40 and the adjustment side stopper receiver 43.

  By configuring the stopper member 40 and the adjustment side stopper receiver 43 as described above, when the contact surfaces thereof are worn, the stopper member 40 and the adjustment side are loosened by loosening the bolts 44 as shown in FIG. The positions of the stopper receivers 43 can be moved to adjust their positions. In this state, the taper surface 40a of the stopper member 40 is brought into contact with the taper surface 42a of the fixed-side stopper 42 fixedly provided on the mounting plate 41, and the bolt 44 provided on the stopper member 40 is tightened to thereby secure the stopper. The member 40 is fixed, then the tapered surface 43a of the adjustment-side stopper receiver 43 is brought into contact with the other tapered surface 40a of the stopper member 40, and the bolt 44 attached thereto is tightened. To fix.

  As a result, the stopper member 40 easily and surely makes surface contact with the fixed side stopper receiver 42 and the adjustment side stopper receiver 43 with the tapered surfaces 40a and 42a and 40a and 43a. The position can be adjusted so that it can be stably held.

  The open / close door fixing device according to the present invention is configured as described above. However, when the side open / close door 16 is in a closed state, the operation unit 33 is pulled to the front side to open it. That is, it is rotated in the direction B in FIG. As a result, the lock mechanism 25 including the hook member 31 and the latch 34 is disengaged, and the side opening / closing door 16 opens outward with the hinge 20 as the center. At the same time, the stopper member 40 provided on the side opening / closing door 16 is detached from the gap between the stopper receivers 42 and 43 on the fixed side and the adjustment side.

  On the other hand, in order to close the side opening / closing door 16, the tip of the side opening / closing door 16 is pushed in a direction close to the support 28. Then, the sliding portion 31b of the hook member 31 comes into contact with the tip of the engaging / disengaging portion 34a of the latch 34, and the hook member 31 rotates against the spring 32 in the direction opposite to the arrow A in FIG. When the tip of the latch 34 passes through the sliding portion 31b, the hook member 31 is rotated in the arrow A direction by the spring 32. As a result, the engaging portion 31a of the hook member 31 comes into contact with the engaging / disengaging portion 34a of the latch 34, so that the side opening / closing door 16 is locked in the closed state. In this locked state, the tapered surface 40a of the stopper member 40 is clamped so as to come into surface contact with the tapered surfaces 42a and 43a of the stopper receivers 42 and 43.

  As a result, the movement of the side door 16 is restricted by the engagement of the hook member 31 and the latch 34 in the opening and closing direction, and the stopper member 40 is sandwiched between the stopper receivers 42 and 43 in the vertical direction. It will be fixed by. Therefore, the side opening / closing door 16 is held in a fixed state, and even if the machine vibrates, the side opening / closing door 16 is stably held in a fixed state to suppress noise. There is no possibility that the respective parts constituting the side opening / closing door 16, in particular, the hinge 20, will be deformed or damaged.

  Here, when the side opening / closing door 16 is repeatedly opened and closed, and when the machine vibrates greatly with the side opening / closing door 16 held closed, the stopper member 40 and the fixed side and When they are worn by sliding between the stopper stoppers 42 and 43 on the adjustment side, a gap is formed between them, and the fixing and stability of the side opening / closing door 16 by the steadying means 27 are improved. Will be reduced. As a result, the side opening / closing door 16 swings up and down around the position of the hinge 20. When the side opening / closing door 16 vibrates in this manner, a large noise is generated, and as a result, the operator or the like can recognize that the function of the steadying means 27 has deteriorated. Therefore, the bolt 44 is loosened to adjust the positions of the stopper member 40 and the adjustment side stopper receiver 43 so that when the side opening / closing door 16 is closed, the stopper member 40 and the stopper receivers 42 and 43 on the fixed side and adjustment side are It is possible to restore the contact state. This not only reduces noise but also prevents the hinge 20 supporting the side door 16 from being deformed or damaged.

  Here, the tapered surfaces 40a, 42a, 43a of the stopper member 40 and the stopper receivers 42, 43 are not necessarily worn evenly, but the degree of wear is partially different. Therefore, when the positions of the stopper member 40 and the adjustment-side stopper receiver 43 are adjusted, the taper surfaces 40a and 42a and the taper surfaces 40a and 43a are not in a surface contact state but in a line contact or point contact state. is there. Of course, as long as the stopper member 40 is in contact with the stopper receivers 42 and 43, the side opening / closing door 16 does not swing up and down. And after adjusting a position, when taper surfaces become familiar early, it will be in a surface contact state, and when the side part door 16 is closed, it will fix more stably.

1 is an external view of a hydraulic excavator as an example of a construction machine. It is a disassembled perspective view which shows a side part opening / closing door and its attaching part. It is sectional drawing in the position containing the locking mechanism in the closed state of a side part opening / closing door. It is XX sectional drawing of FIG. It is a principal part enlarged view of FIG. FIG. 6 is a left side view of FIG. 5. It is a figure similar to FIG. 5 which shows the state which loosened the volt | bolt.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Lower traveling body 12 Upper revolving body 15 Machine room 16 Side opening / closing door 20 Hinge 22 Support part 25 Locking mechanism 27 Stabilizing means 28 Support 31 Hook member 34 Latch 40 Stopper member 41 Mounting plate 42 Fixed side stopper receiver 43 Adjustment side stopper Receptacle 40a, 42a, 43a Tapered surface 40b, 43b Bolt insertion hole 44 Bolt 45 Nut

Claims (4)

The open / close side of the open / close door is fixed to the open / close side of the open / close door, which is mounted on the upper swing body of the construction machine and is opened and closed by rotating about a rotation shaft provided in a substantially vertical direction. In the door fixing device provided with a lock means for locking the door in a closed state and a swing prevention means for suppressing the door from swinging in the vertical direction,
The steadying means is provided on the other side with a stopper member provided in a pair of upper and lower sides so as to protrude from either one of the opening / closing door and the support member fixedly provided on the upper swing body. A stopper receiver having a contact surface with the upper and lower end surfaces of the protruding portions of both stopper members,
The stopper receiver is fixedly disposed on a fixed side stopper receiver, and an adjustment side stopper receiver which is disposed at an upper and lower position sandwiching the stopper members with respect to the fixed side stopper receiver and is adjustable in the vertical direction. And consisting of
Each of the stopper members is configured to be fixed so that its position can be adjusted in the vertical direction. The opening / closing door fixing device according to claim 1, wherein contact surfaces of the stopper member and the stopper member with the stopper member are each formed by a tapered surface having a predetermined angle. The stopper member and the stopper receiver that can be adjusted in position are respectively fixed by bolts. Bolt insertion holes having openings larger than the outer diameter of the bolt at least in the vertical direction are provided in these stopper members and stopper receivers. The open / close door fixing device according to claim 1, wherein the door fixing device is formed. The stopper member is provided at two locations on the top and bottom, the stopper receiver is disposed between the upper and lower stopper members, and the fixed side stopper receiver is disposed above and below the fixed side stopper receiver, and the height position can be adjusted. The open / close door fixing device according to any one of claims 1 to 3, wherein a side stopper receiver is provided.

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