KR101267423B1 - A fold-unfold type stares - Google Patents

Abstract

PURPOSE: A foldable step device is provided to mount a locking bracket assembly to the front end outer side of an outer fixing guide bar and to support an inner side slide bar by fixing and releasing the same. CONSTITUTION: A locking bracket assembly of a folding deployable step device interposes a coil spring at the rear direction of a ball block(90) and screw-connects a bolt block(95). A bracket main body integrally forms a cylinder and maintains a plurality of mounting holes to the outside of the cylinder in a constant interval. The cylinder includes a protrusion at the front end of inner circumference and includes a screw unit at the rear end of the inner circumference. The ball block is inserted in order that a dome shape insertion and separation opening is exposed to the outside through an insertion and separation hole inside the cylinder.

Description

Fold-Unfold Type Stairs {A Fold-Unfold Type Stares}

The present invention relates to a folding deployment type staircase device installed at the doorway of a house such as a mobile toilet mounted on a vehicle, a mobile toilet, and a simple house, and used when entering and exiting a room (house).

In more detail, on both sides of the storage compartment formed at the lower side of the house, the outer fixing guide bars are installed side by side, and the inner slide bars mounted on both sides of the folding / development steps that can be folded / expanded to the outer fixing guide bar. Can be inserted by sliding storage and withdrawal, the folding / development staircase is installed on the upper and lower side of the fixed intermediate staircase fixed to the upper staircase and the lower staircase by hinges to be folded and developed, respectively, the fixed intermediate type It is installed on the lower side of the lower staircase of the lower staircase, which is installed on the lower side of the staircase, so that the height can be adjusted to support the lower staircase. The upper stair part divides the middle in the longitudinal direction of the upper stair to the front upper step and the rear upper step. To support the lower side of the upper upper stage as a support, the rear upper stage is supported by the hinge, and the rear upper stage can be folded to the upper side of the front upper stage by the hinge. The hinge is prevented from being damaged by the support part, and the locking bracket assembly is mounted on the outer side of the front end of the outer fixing guide bar to fix / release the inner slide bar to be stored and drawn out so as to be firmly supported. Installing the outer tank by attaching the outer end and the rear end of the outer fixing guide bar to the bottom of the vehicle by a pair of support frames to form a space between the front support frame and the rear support frame. Provides enhanced folding deployment stairs for use as I will.

As an example of a mobile house mounted on a vehicle, a mobile toilet is a convenient facility that is generally installed in public places, event halls, and training centers.

Since the interior of the mobile toilet installed in the vehicle maintains a predetermined height as described above, a staircase is installed outside the entrance to easily enter and exit the interior.

As a stairway installed outside the doorway as described above, 'stair assembly' installed in Korea Utility Model Registration No. 20-263379 (mobile toilet) is known.

The staircase assembly of the mobile toilet is provided with a pair of tunnels (guide rails) fixedly installed at the bottom of the container so that the platform can be removed from the base plate. Staircase) is fixed, and the first plate is hinged to the upper end of the vertical part, and the second plate is hinged to the inner end of the first plate and folded upward, and the bottom of the first plate and the second plate is folded. The legs that can be deployed are installed on the shaft, and the inner end of the second plate is provided with a hook so that the bottom end of the container can be hooked or detached from the fixed hook hanger. A third plate of a 'b' type is installed as a hinge.

It folds the first plate and the second plate and folds it on the front surface of the vertical part of the base plate, and the lower third plate rotates to the rear upper side of the base plate to cover the folded first plate and the second plate, When the folded step assembly is pushed to the rear (inner side) as described above, the platform is inserted into the tunnel and moved to the upper side of the container. The step assembly is carried out in the reverse order to expand and install the step assembly.

However, the step assembly of the conventional mobile toilet constructed and operated (used) is configured to fold and expand the first plate and the second plate forming the upper stairway while rotating upward by a hinge provided on the upper side. Since the connecting part of the second plate and the second plate is folded downward, it is cumbersome to support each other by installing a separate leg on the bottom to prevent this, and rotating the first plate and the second plate forming the upper staircase upward. Since the folding radius is expanded while the rotation radius is large, the folding expansion cannot be easily performed, and the folding expansion can not be performed more easily in a narrow place (space).

In addition, since the third plate, which is a lower staircase, is rotated to the rear side of the base plate to be folded backward, the volume of the folded state is increased, and thus a large amount of unnecessary folding space must be secured at the lower side of the container. There is a problem that the stair assembly can not be easily stored and drawn out because it is inserted, especially since the stair assembly is not provided with a handrail, anxiety and risk are involved when going up and down the stairs.

As a proposal to solve the above problems, the 'folding open stair frame' of Utility Model Registration No. 20-354368 has been proposed.

It installs an intermediate staircase at the end of the sliding bar inserted into the guide rail, the upper stage is connected to the lower end of the hinge and the upper end of the step connected to the inner inner step by a hinge, the end of the guide rail and the rear end of the sliding bar The rollers are mounted respectively, and the railings are fixed to the upper and lower sides of the stairs so that the railings can be assembled and separated.

The lower step is folded in the middle step and the upper step is folded and placed in the upper part, but the upper outer step and the upper inner step are rotated to the lower side so that they can be folded and unfolded so that the operation (rotation) radius can be easily operated and folded. Reduce the volume in the closed state, and connect the lower end of the upper stairway and the upper inner stairway with the hinge to support the upper stair by the hinge, and the upper inner stairway is folded by the load, and the rollers are installed on the guide rail and the sliding bar, respectively. Since the folding-type staircase can be stored and drawn out with little force, the handrails are fixed to the upper and lower sides of the stairs to assemble the railings so that the stairs can be used safely.

However, since it folds the staircase into three steps, the height is high so that the height of the storage space must be secured largely, and the upper outer staircase and the upper inner staircase are supported only by the hinges provided on the upper side, so that the upper outer staircase and the upper inner stair support ability It is weak and the hinge is released and the support capacity is easily lost, and since the lower stage is simply supported by the hinge, the supporting force is weak and unstable, and the sliding bar inserted into the guide rail is not fixed. In the sense of lack of stability and in a folded state, a dangerous phenomenon occurs in which the sliding rail inserted in the guide rail is drawn out by vibration or the like when the vehicle moves.

The present invention is to provide a folded deployment type staircase device further improved to solve the above problems.

According to the present invention, both sides of the storage chamber formed at the lower side of the house are provided with the outer fixing guide bars side by side, and the inner slide bar mounted on both sides of the folding / developing stair portions that can be folded / developed is inserted into the outer fixing guide bar and slides. The folding / development stairs can be folded and developed by installing the upper stairs and the lower stairs at the upper and lower sides of the fixed intermediate stairs, which are fixed to the hinges. On the bottom of the lower step of the lower staircase installed by the hinge is installed a height adjustment leg to adjust the height, the upper staircase is installed on the upper side of the fixed intermediate staircase divided the longitudinal middle of the upper stairway in front of the upper top Split into stairs and rear upper stage, and open the hinge between the divided front upper stage and rear upper stage And the rear upper stage is supported by the hook support portion, and the locking bracket assembly is mounted on the outside of the front end of the outer fixing guide bar to fix / release the inner slide bar that is stored and drawn out, and the outer end of the outer fixing guide bar It is an object of the present invention to provide a folded deployment type staircase device which is improved by mounting a rear end on a bottom surface of a vehicle type vehicle by a pair of support frames to form a space between the front support frame and the rear support frame.

Another object of the present invention, by installing a height adjustment leg to adjust the height on the bottom of the lower stepped step of the lower stairway step is installed on the lower side of the fixed intermediate type staircase can be firmly supported by the lower staircase, The upper stairway part installed on the upper side of the fixed intermediate step part divides the middle of the upper stairway in the longitudinal direction and divides it into the front upper step and the rear upper step, and connects the divided front upper step and the rear upper step by the hinge to the rear upper end. By supporting the lower side of the front upper stage as a support while allowing the stairs to be folded on the upper side of the upper upper stage, the hinge can be prevented from being damaged by supporting the lower upper stage by the hook support. Inner slide for storing and withdrawing locking bracket assembly Can be firmly supported by fixing / unlocking the space, and the outer front end and the rear end of the outer fixed guide bar are mounted on the bottom of the vehicle type by a pair of support frames, thereby providing a space between the front support frame and the rear support frame. It is to provide a folded deployment type staircase device that can be used to install the additional space, such as by installing an additional tank to be formed.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects,

On both sides of the storage compartment formed at the lower side of the house, the outer fixing guide bars are installed side by side, and the inner slide bars mounted on both sides of the folding / development stairs that can be folded / developed are inserted into the outer fixing guide bars for sliding storage and withdrawal. The folding / development stairs may be installed at the upper and lower portions of the fixed intermediate type staircase to be fixed by hinges to be folded / developed by hinges at the lower side of the fixed intermediate type staircase, respectively. A height adjustment leg is installed on the bottom of the lower step of the lower stair step, and the upper stair part installed on the upper side of the fixed intermediate step part divides the middle of the upper stair in the longitudinal direction to the front upper step and the rear upper step. The rear upper stage by dividing and connecting the divided upper upper stage and the rear upper stage by an upward hinge It is possible to fold the end on the upper side of the front upper step, and to lock / unlock the inner slide bar that is stored and drawn out by attaching the locking bracket assembly to the outside of the front end of the outer fixing guide bar, and to the outer end of the outer fixing guide bar. And the rear end is mounted on the bottom of the vehicle type by a pair of support frames so that a space is formed between the front support frame and the rear support frame, and the inner slide accommodated and drawn out by the outer fixing guide bar and the outer fixing guide bar. The bar drills the front fixing hole and the rear fixing hole at the one side front end and the rear end of the inner slide bar, and the detaining bracket operating hole at the one end of the outer fixing guide bar, and the detention bored at the one end of the outer fixing guide bar. In which the locking bracket assembly is provided outside the release bracket operating hole;

The locking bracket assembly is installed outside the tip of the outer fixing guide bar;
A bolt block is screwed into the rear of the ball block into which the dome-shaped insert is inserted to be exposed to the outside through the insertion hole, and the bolt block is screwed through the coil spring at the rear of the ball block;

The bracket body is formed by integrally forming a cylinder that is opened to flow back and forth in the center and maintaining a plurality of mounting holes at regular intervals on the outside of the cylinder;

The cylinder is formed in the end of the inner periphery of the engaging jaw to form an insertion hole in the inner periphery of the engaging jaw and formed a screw portion at the rear end of the inner periphery;

The interior of the cylinder is formed by inserting the ball block so that the dome-shaped insertion port is exposed to the outside through the insertion hole; achieved by the folding deployment type staircase device (10) characterized in that.

The present invention, in providing a folded deployment type staircase device, is installed on the lower side of the lower step of the lower staircase step installed by the hinge on the lower side of the fixed intermediate type staircase, and the adjustable height step The upper stair part installed at the upper side of the upper part divides the middle in the longitudinal direction of the upper stair step into the front upper step step and the rear upper step step, and connects the rear upper step step with the rear upper step step by the hinge and connects the rear upper step step to the front top step. Fold to the upper side of the staircase, and the rear upper step is supported by the hanger support part, and the locking bracket assembly can be mounted on the outside of the front end of the outer fixing guide bar to fix / release the inner slide bar that is stored and drawn out. The front and rear ends of the vehicle are mounted on the underside of the vehicle by a pair of support frames to support the front. And the frame is added to the space formed between the rear support frame.

The present invention, by installing the height adjustment leg to adjust the height on the bottom of the lower step of the lower staircase is installed on the lower side of the fixed intermediate staircase can support the lower staircase soundly, the fixed intermediate type The upper stair part installed at the upper side of the stair part divides the middle in the longitudinal direction of the upper stair step into the front upper step step and the rear upper step step, and connects the divided rear upper step step with the rear upper step step by a hinge to connect the rear upper step step forward. By supporting the lower side of the upper upper stage as a support while being able to be folded on the upper side of the upper stage, the rear upper stage can be supported by a hook support to prevent the hinge from being damaged, and the outer end of the outer fixing guide bar Locking bracket assembly is installed on the inside to fix / release the slide bar It can be firmly supported, and the outer end and the rear end of the outer fixing guide bar is mounted on the underside of the vehicle by a pair of support frames to form a space between the front support frame and the rear support frame. The space part can be utilized as installing an additional tank.

1 is an exemplary view showing a typical vehicle type mobile toilet in which the folding deployment type stair device according to the present invention is installed.
Figure 2 is a side view showing a folding deployment type stair device according to the present invention.
Figure 3a to 3c is a process diagram showing the folding process of the folding deployment type stair device according to the present invention.
Figures 4a and 4b is a plan view and a side view showing an extracting the fixed intermediate stairway and the folding guide guide portion in the folding deployment type stair device according to the present invention.
Figures 5a to 5c is a plan view and a side view and a front view showing the extraction of the folding electric field-type lower staircase in the folding deployment type staircase device according to the present invention.
Figure 6a and Figure 6b is a plan view and side view showing the extraction of the folding electric field-type upper staircase in the folding deployment type staircase device according to the present invention.
Figure 7a to 7c is a side view, plan view and front view showing an extract of the folding guide guide in the folding deployment type stair device according to the present invention.
8a and 8b is an exploded cross-sectional view and a combined cross-sectional view showing the detained control assembly installed in the folding deployment guide support in the folding deployment type stair device according to the present invention.
9A and 9B are explanatory views of the operation relationship of the detention control assembly installed in the folding deployment guide support unit in the folding deployment type stair device according to the present invention;
10A and 10B are a plan view and a front sectional view of the bracket body taken from the detaining control assembly of the folded deployment type staircase device according to the present invention;
11A and 11B are a plan view and a front sectional view of the ball block taken from the detaining control assembly of the folded deployment type staircase device according to the present invention;
12A and 12B are a plan view and a front sectional view of the bolt block taken from the detaining control assembly of the folded deployment type staircase device according to the present invention;
Figure 13 is a front sectional view showing an extract of the coil spring mounted on the detention control assembly of the folded deployment type staircase device according to the present invention.

These and other objects and features of the present invention will be more clearly understood from the following detailed description based on the accompanying drawings.

1 to 13 is an exemplary view showing a specific implementation of the folding deployment type stair device 10 according to the present invention.

1 is an exemplary view showing a conventional vehicle-type mobile toilet 1 in which the folded deployment type staircase device 10 according to the present invention is installed.

2 is a side view showing a folding deployment type stair device 10 according to the present invention, Figures 3a to 3c is a process chart showing a folding process of the folding deployment type stair device 10 according to the present invention.

4A and 4B are a plan view and a side view of the fixed intermediate staircase 40 and the folding guide guide portion 70 in the present invention, and FIGS. 5A to 5C illustrate the folding field type lower staircase 30 in the present invention. Excerpts from top, side and front views.

6A and 6B are a plan view and a side view of the folded field-type upper staircase 50 in the present invention, and FIGS. 7A to 7C are side views and a plan view and a front view of the folded deployment guide supporter 70.

8A and 8B are exploded cross-sectional views and a combined cross-sectional view showing the detained disassembly control assembly 80, and FIGS. 9A and 9B are explanatory views of the operation relationship of the detained disassembly control assembly 80, and FIGS. 11A and 11B are a plan view and a front sectional view taken from the bracket body 81 of the assembly 80, and FIGS. 11A and 11B are taken from a ball block 90 of the detention control assembly 80, and FIG. And FIG. 12B is a plan view and a front sectional view of the bolt block 95 taken from the detaining control assembly 80, and FIG. 13 is a front sectional view of an coil spring 98 mounted on the detaining control assembly 80. FIG. .

The folding deployment type staircase device 10 according to the present invention, as illustrated in FIG. 1, is installed outside the doorway as in a typical vehicle type portable toilet 1 so that a user can easily enter and exit the door.

The ordinary vehicle type portable toilet 1 is formed by mounting a container toilet 3 on the vehicle 2.

The container toilet (3) is formed by the male toilet and the women's toilet independently or formed by dividing the interior of the container toilet (3) into a men's toilet and a women's toilet, not specifically shown in each man and women's toilet. However, the toilet seat and the wash basin are installed separately, and urinals are installed in the men's toilet, and the toilet and wash basin and the urinal installed in the container toilet (3: men's toilet and the women's toilet) are mounted on the inner lower part of the container toilet (3). The water is supplied by pumping water in a water storage tank (not specifically shown).

The folding deployment type staircase device 10 according to the present invention is installed on the outside of each entrance formed in the men's toilet and the women's toilet, so that the user can easily enter and exit.

The folding deployment type staircase device 10 according to the present invention installed outside the doorway of the container toilet (3: male toilet and female toilet) was formed as follows.

The folding deployment guide support part 70 was provided in the bottom face of the container toilet 3 in which the entrance and exit were formed.

The folding guide support portion 70 has a pair of outer fixing guide bar 72 mounted side by side in the interior of both sides of the entrance from the bottom of the container toilet (3), the inner side of the outer fixing guide bar 72 The slide bar 71 was inserted.

The outer fixing guide bar 72 is fixed (mounted) the support plate 73 by the fixing piece 74 before and after the outside so that a sufficient space is formed between the support plate 73, the container toilet ( On the bottom of 3) the vehicle fixing frame 8 is fixed (mounted) by the fixing block 7, and each support plate 73 fixed to the outer fixing guide bar 72 is attached to the bottom of the container toilet 3. It mounted on the vehicle fixing frame (8).

As described above, the outer fixing guide bar 72 is provided so that the auxiliary tank 6 may be installed in the space formed between the support plates 73 mounted (fixed) before and after the outside.

Sliding rollers 75 are installed at the front end of the outer fixing guide bar 72 and the rear end of the inner slide bar 71 to allow the inner slide bar 71 to be easily slid.

As illustrated in FIGS. 7A and 7B, the sliding roller unit 75 installed at the front end of the outer fixing guide bar 72 has a pair of bending roller plates 76 whose ends are bent downward. The side rollers are fixed side by side on both ends of the bar 72, and the support rollers 76-1 are installed on the ends of the bending roller plates 76 facing each other, and the support rollers 76-1 are formed on the inner slide bar 71. ) To support the underside.

The sliding roller portion 75 installed at the rear end of the inner slide bar 71 has a pair of roller plates 77 side by side on both sides of the rear end of the inner slide bar 71 as illustrated in FIGS. 4A and 4B. The support roller 77-1 was axed to the rear end of the opposite roller plate 77, and the support roller 77-1 was connected to the upper surface of the outer fixing guide bar 72 so as to be rolled.

As described above, a folding and developing step 20 is mounted (installed) at the tip of the inner slide bar 71 inserted into the outer fixing guide bar 72 and drawn out.

The folding stepped portion 20 mounted (installed) at the tip of the inner slide bar 71 is installed by fixing the fixed intermediate stepped portion 40 at the tip of the inner slide bar 71, and the fixed intermediate stepped portion ( The lower staircase part 30 formed in the folded development type was installed at the lower side of the 40), and the upper staircase part 50 formed in the folded development type was installed in the upper part of the fixed middle staircase part 40.

The fixed intermediate step part 40 fixed to the tip of the inner slide bar 71 is mounted (fixed) the intermediate step 41 horizontally, as illustrated in FIGS. 4A and 4B, and the intermediate step 41 On both sides of the front end, the first vertical support 42 is fixed side by side to the side staircase 30, which will be described in detail later by the hinge 45 was installed, both sides of the rear end from the upper surface of the intermediate stair 41. The second vertical support 43 was fixed side by side to the front upper step (51) of the upper stair step 50 to be described in detail later (fixed).

The lower staircase 30 mounted to the first vertical support 42 forming the hinge 45 to form the intermediate staircase 41 was formed as illustrated in FIGS. 5A to 5C.

The vertical support 33 is mounted (fixed) on the front hinge 45 mounted on each first vertical support 42 (fixed), respectively, so that the vertical support 33 is maintained side by side and is kept side by side. The lower stage 31 is horizontally mounted (fixed) at the lower front end of the vertical support 33, and the bottom of the lower stage 31 is fixed (mounted) by separating a pair of vertical supports 32 from each other. The bottom of the vertical support (32) was to adjust the height by screwing the height adjustment leg (35).

An upper upper step 51 mounted (installed) to the upper rear of the intermediate stair 41 is formed as illustrated in FIGS. 6A and 6B.

A pair of second vertical supports 43 fixed (mounted) on both sides of the rear end from the upper surface of the intermediate stair 41 are mounted (fixed) to the bottom end of the upper upper step 51 of the upper staircase 50. Between the bottom of the front upper step 51 and the inner slide bar 71, a pair of front upper step support 55 is fixed to support the front upper step 51, and the front upper step ( The rear upper stage 52 is mounted to the rear upper stage 52 by the upper hinge 53 so that the rear upper stage 52 can be folded to the upper surface (upper side) of the front upper stage 51.

The rear upper stage 52 of the front upper stage 51, which is installed as described above, is preferably mounted (installed) on the bottom of the container toilet 3 as illustrated in FIGS. 6A and 6B. The stair hook support unit 60 was mounted (installed) so as to support the rear end of the rear upper step 52.

The upper stage hanger support part 60 mounted (installed) on the bottom of the container toilet 3 has a fixed plate 63 mounted (installed) on the bottom of the container toilet 3 and a hinge on the fixed plate 63. An upper end of the vertical bar 61 is mounted (fixed) by 64, and the vertical bar 61 is formed to be bent outwardly by the hook part 62 at the lower end thereof, and then hangs on the rear end of the rear upper step 52. To give.

The handrail mounting holes 22 which are open (perforated) are respectively mounted on both sides of the lower step stage 31 and both sides of the rear upper step stage 52 in the folded deployment step portion 20 formed as described above (fixed). In addition, the handrail installation port 22 positioned on the same side was installed to separate or install the handrail 21 by inserting the front vertical bar and the rear vertical bar of the bent railing 21.

In addition, the locking bracket assembly 80 as illustrated in FIGS. 8A to 13 is mounted on the outer fixing guide bar 72 and the inner slide bar 71 installed as described above, as illustrated in FIGS. 4A and 4B. The inner slide bar 71 that is sliding (storing withdrawal) can be held / released.

In the inner slide bar 71, the front fixing hole 73-1 and the rear fixing hole 73-2 were drilled at the front end and the rear end of one side, respectively, and at one end of the outer fixing guide bar 72. The locking bracket assembly 80 was mounted.

The locking bracket assembly 80 was formed as follows.

In the center of the bracket body 81 formed of a disc formed integrally formed cylinder 82 which is perforated to flow back and forth, the outside of the cylinder 82 a plurality of mounting holes 86 formed with a step portion 87 on the inner circumference To maintain at regular intervals, the mounting holes (86) are coupled to the mounting means such as mounting bolts (not specifically shown), the bracket body 81 to the end of the outer fixing guide bar 72 The detaining release bracket operating hole 77 was formed to be mounted on the outside.

The cylinder 82 is formed in the end of the inner periphery of the engaging jaw 84 in an annular shape so that the insertion hole 84 is formed on the inner periphery of the engaging jaw 84, the cylinder 82 is the rear end of the inner periphery There was formed a threaded portion (83) to allow the bolt block 95 to be screwed.

The ball block 90 is inserted into the cylinder 82 so that the dome-shaped insertion hole 91 is exposed to the outside through the insertion hole 84 to be inserted into the detention release bracket operating hole 77, and the ball block 90 is inserted into the cylinder 82. ) Was formed by screwing the bolt block 95 to the threaded portion 83 through the coil spring 98 through the rear.

As illustrated in FIGS. 11A and 11B, the ball block 90 integrally forms a dome-shaped inserting hole 81 on the front surface of the cylindrical block body 92, and has a space portion inside the cylindrical block body 92. 92-1) was formed to be open rearward to allow the coil spring 98 to be coupled (inserted).

In addition, the bolt block 95 is formed integrally with the bolt portion 96 on the front surface of the bolt block body 97, the distribution hole (97-1) on the center line of the bolt block body 97 and the bolt portion 96. It was formed to allow the air to flow to reduce the internal pressure of the cylinder 82 so that the block 90 and the coil spring 98 to operate smoothly.

Hereinafter, the operation relationship of the folding deployment type staircase device 10 according to the present invention formed as described above.

When the folded deployment type staircase device 10 according to the present invention is folded and accommodated in a state of being installed as illustrated in FIG.

The handrails 21 provided on both sides of the folding deployment step 20 are removed and removed, and the folding development steps 20 are folded.

The folding step stair 20 rotates the front hinge 45 axially while lifting the lower staircase part 40 upward, and folds and lowers the lower step 31 onto the upper side of the intermediate stair 41. By folding the upper stage 52 forward while rotating the upper hinge 53 as an axis, the rear upper stage 52 is folded and placed on the upper side of the front upper stage 51 to complete the folding.

In the state where the folding of the folding step 20 is completed as described above, the folded folding step 20 is accommodated in the lower side of the container toilet 3.

In the locking bracket assembly 80 mounted on one end of the outer fixing guide bar 72, the bolt block body 97 of the bolt block 95, which is screwed to the cylinder 82, is rotated in reverse. 96 is reversed (discharged) along the threaded portion 83 formed in the cylinder 82, when the bolt block 95 is reversed, the coil spring 98 is maintained in a state in which the crimped state is released, The locking bracket assembly 80 will remain in the state as illustrated in FIG. 3A.

As described above, when the bolt block 95 is rotated in the reverse direction and the folded folding step 20 is pushed under the container toilet 3 in the state where the elastic force of the coil spring 98 is lost, the inner slide bar 71 is formed. The dome-shaped insertion hole 91 of the ball block 90, which has been coupled to the rear fixing hole 73-2 of FIG. 2, withdraws the elastic force of the coil spring 98 and retreats as illustrated in FIG. 3B. ) Is out of the rear fixing hole (73-2), and thus the inner slide bar (71) is inserted into the outer fixing guide bar (72).

As described above, when the inner slide bar 71 is inserted into the outer fixing guide bar 72, each sliding roller part mounted at the rear end of the inner slide bar 71 and the upper end of the outer fixing guide bar 72, respectively. The support roller 77-1 and the support roller 76-1 of the 75 are rolled on the inner surface of the outer fixing guide bar 72 and support the bottom surface of the inner slide bar 71, so that the inner slide bar ( 71 is inserted while sliding to the inside of the outer fixing guide bar (72).

As described above, the inner slide bar 71 is almost inserted into the outer fixing guide bar 72 and is ball ball shot into the coil spring 98 in the front fixing hole 73-1 of the inner slide bar 71 ( The dome-shaped outlet 91 of 90 is stopped when inserted.

Subsequently, when the bolt block 95 of the unlocking bracket assembly 80 that is released is tightened (screwed together), the coil spring 98 is compressed, and the bolt block 95 is compressed by the elasticity of the coil spring 98 that is compressed. Is fixed, and when the bolt block 95 is fixed, the dome-shaped outlet 91 of the bolt block 95 is maintained in the state inserted into the front fixing hole (73-1).

Therefore, the inner slide bar 71 inserted into the outer fixing guide bar 72 is detained by the locking bracket assembly 80 so as not to protrude forward, and the folding according to the present invention is carried out as described above. The folding storage of the deployment type stairs 10 is completed.

On the other hand, when the folded deployment type staircase device 10 according to the present invention is deployed and installed as described above, the folding deployment type staircase device 10 according to the present invention is carried out as follows.

Loosen the bolt block 95 of the locking bracket assembly 80 to release the detention state of the bolt block 95 held by the coil spring 98, and fold it in a state where the detention state of the bolt block 95 is released. When the deployment staircase 20 is pulled outward, the inner slide bar 71 is pulled out of the outer fixing guide bar 72, and the inner slide bar 71 drawn out is rear fixed hole 73-2. The locking bracket assembly 80 mounted on the outer leading end of the outer fixing guide bar 72 is caught by the dome-shaped insertion hole 91 of the bolt block 95.

When the rear fixing hole 73-2 of the inner slide bar 71 drawn out to the outside of the outer fixing guide bar 72 is caught by the dome-shaped outlet 91 of the bolt block 95, the drawing is stopped, Tighten (by screwing) the bolt block 95 of the locking bracket assembly 80, which is released from, to fix the inner slide bar 71.

The upper staircase 50 of the folded deployment staircase 20 that is folded in the state in which the inner slide bar 71 drawn out of the outer fixing guide bar 72 is fixed by the locking bracket assembly 80 as described above. ) And the lower staircase step 30 is developed to complete the deployment installation of the folding deployment type stair device 10 according to the present invention.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art.

1: vehicle type mobile toilet 2: vehicle
3: container toilet 10: folding deployment type stairs
20: folding deployment step 30: lower step
40: fixed intermediate staircase 50: upper staircase
60: upper step hanger 70: folding guide guide support
80: Locking bracket assembly 90: Ball block
95: bolt block

Claims (5)

On both sides of the storage compartment formed at the lower side of the house, the outer fixing guide bars are installed side by side, and the inner slide bars mounted on both sides of the folding / development stairs that can be folded / developed are inserted into the outer fixing guide bars for sliding storage and withdrawal. The folding / development stairs may be installed at the upper and lower portions of the fixed intermediate type staircase to be fixed by hinges to be folded / developed by hinges at the lower side of the fixed intermediate type staircase, respectively. A height adjustment leg is installed on the bottom of the lower step of the lower stair step, and the upper stair part installed on the upper side of the fixed intermediate step part divides the middle of the upper stair in the longitudinal direction to the front upper step and the rear upper step. The rear upper stage by dividing and connecting the divided upper upper stage and the rear upper stage by an upward hinge It is possible to fold the end on the upper side of the front upper step, and to lock / unlock the inner slide bar that is stored and drawn out by attaching the locking bracket assembly to the outside of the front end of the outer fixing guide bar, and to the outer end of the outer fixing guide bar. And the rear end is mounted on the bottom of the vehicle type by a pair of support frames so that a space is formed between the front support frame and the rear support frame, and the inner slide accommodated and drawn out by the outer fixing guide bar and the outer fixing guide bar The bar drills the front fixing hole and the rear fixing hole at the one side front end and the rear end of the inner slide bar, and the detaining bracket operating hole at the one end of the outer fixing guide bar, and the detention bored at the one end of the outer fixing guide bar. In which the locking bracket assembly is provided outside the release bracket operating hole;
The locking bracket assembly is installed outside the tip of the outer fixing guide bar;
A bolt block is screwed into the rear of the ball block into which the dome-shaped insert is inserted to be exposed to the outside through the insertion hole, and the bolt block is screwed through the coil spring at the rear of the ball block;
The bracket body is formed by integrally forming a cylinder that is opened to flow back and forth in the center and maintaining a plurality of mounting holes at regular intervals on the outside of the cylinder;
The cylinder is formed in the end of the inner periphery of the engaging jaw to form an insertion hole in the inner periphery of the engaging jaw, the rear end of the inner periphery formed a screw;
The inside of the cylinder is formed by inserting the ball block so that the dome-shaped insertion port is exposed to the outside through the insertion hole; Folding step type device characterized in that. delete delete The ball block of claim 1, wherein the ball block is inserted into the cylinder;
And a dome-shaped insertion outlet formed integrally on the front surface of the cylindrical block body, and formed inside the cylindrical block body to open rearward to allow the coil spring to be inserted therein. The method according to claim 1, The bolt block is screwed into the interior of the cylinder;
And a distribution hole formed integrally with the bolt block on the front surface of the bolt block body and formed on the center line of the bolt block body and the bolt unit.

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