KR20210056523A - Folding safety tread plate - Google Patents

Abstract

The present invention provides a folding-type safety footrest. In accordance with the present invention, as four leg members are allowed to be assembled or disassembled in a center through a link, when a safety footrest is stored, a volume thereof is reduced to increase convenience of storage. In addition, since the length of each leg member is individually adjustable, even if a floor is inclined or a structure is provided, a work plate can be installed horizontally at all times, so that work can be performed stably. Moreover, as an auxiliary leg member is further installed on the leg member, a work plate with a higher height can be more stably supported without shaking. In addition, the length of a ladder member can be adjusted in accordance with the length adjustment of a leg member, so an operator can easily climb on a work plate even if the work plate is located at a high position.

Description

Folding safety tread plate

The present invention relates to a foldable safety stool, and more particularly, to a foldable safety stool capable of reducing the volume at the time of storage and to safely install a worktable horizontally even in a place with an inclined floor.

In general, when work from a high place is required, for example, in various work sites where work such as woodworking, paper painting, plastering, electricity, painting, film, and tiles is performed, a user can climb a stepped working platform using a stepped working platform. It is making it possible to work.

On the other hand, as a representative prior art related to such a stepped working scaffolding, the Korean Intellectual Property Office Public Utility Model Publication No. 20-2014-0002358 (name: stepped scaffolding device for work) may be exemplified.

The prior art is a stepped scaffolding device that a worker can climb up and down, a fixed frame disposed on both sides at a distance, and a scaffolding fixed with a fixed frame in a structure arranged with a step difference between the two-sided fixed frames, and the fixed A scaffolding means comprising a first guide tube formed in a hollow structure on one side of the frame, a fastening fastener fastened to the first guide tube, and is coupled to rise and fall along the first guide tube of the scaffolding means, and the unit structure and The summary is to be configured to include a detachably fixed pressing coupling means, and a grip means coupled to the pressing coupling means so as to be lifted and lowered.

However, as the stepped scaffolding device of the structure of the prior art is used in a fixed state, rather than a structure in which the stepped scaffolding is folded or overlapped, it is not possible to reduce the volume when storing the scaffolding device after work, thereby securing space necessary for storage There is a drawback of being limited to

In addition, as for the stepped scaffolding device, the length of each of the four leg members cannot be adjusted individually, so if the scaffolding device is installed in a place where the floor is inclined, the scaffolding is inclined to one side in accordance with the inclined place, thereby causing a safety accident. have.

Document 1: Republic of Korea Patent Office Public Utility Model Publication Publication No. 20-2014-0002358

Accordingly, an object of the present invention for solving the above-described problems is to provide a folding safety footrest in which the four leg members are gathered or unfolded in the center through a link to reduce the volume during storage.

Another object of the present invention is to provide a folding safety footrest that can be installed horizontally even in a place where the floor is inclined by configuring the length of the leg member to be individually adjustable.

Another object of the present invention is to provide a folding safety footrest that can support the working footrest more stably by further installing an auxiliary leg member on each leg member.

Another object of the present invention is to provide a foldable safety footrest so that the length of the ladder can also be adjusted according to the length adjustment of the leg member.

The present invention for achieving the above objects is a foldable worktable including a first to fourth leg members, a working plate mounted on the first to fourth leg members, and a ladder allowing the working plate to rise, the The first leg member is composed of a hollow outer member having an empty inside, an inner member inserted to be retractable from the inside of the outer member to the outside, and a stopper for fixing and releasing the outer member and the inner member. The second to fourth leg members are manufactured in the same structure as the first leg member and configured to adjust the height of the working plate according to the working position, and between the first leg member and the second leg member, and A fixing link is provided between the third leg member and the fourth leg member, and the first and third legs are disposed between the first leg member and the third leg member, and between the second leg member and the fourth leg member. A foldable link configured to fold and connect the leg members to the center or to spread outward is installed, the ladder members are arranged to face each other, and the tip is installed between the third leg member and the fourth leg member. A pair of inner frames rotatably coupled to the outer diameter of the fixed link in which there is, a first ladder member composed of a scaffold installed at a certain distance between the inner frames, and fitted to the outer surface of the inner frame so as to be retractable to the outside A second ladder member composed of a pair of outer frames molded in a "⊂" cross-sectional shape so as to be formed, a scaffolding installed at a certain distance between the outer frames, and inserted into a groove formed in the scaffolding of the first ladder member Consisting of a first insertion portion that is elastically supported by a spring in a state, and a stopper having a second insertion portion that is located opposite the first insertion portion and which is detachably inserted into a hole connected to and communicated with the inner and outer frames, the The first to fourth reinforcing leg members are further installed at the lower ends of the first to fourth leg members, and the first reinforcing leg member is rotatably coupled with one end to the outer diameter of the inner member of the first leg member. It consists of a tilting arm, a reinforcing frame that is installed vertically at the other end of the tilting arm and exits out of the first leg member and is fixed to the floor according to the rotational motion of the tilting arm, and the second to fourth The reinforcing leg members are manufactured in the same structure as the first reinforcing leg members, and are respectively installed on the second to fourth leg members.

First to fourth brackets are installed on upper ends of the first to fourth leg members, first to fourth safety vertical frames are installed on the first to fourth brackets, and the first to fourth safety vertical frames It is preferable that the two first and second safety horizontal frames are connected to each other as a connection frame.

The present invention has the effect of increasing the convenience of storage by reducing the volume when storing the worktable by allowing the four leg members to be gathered or unfolded in the center through a link.

In addition, since the length of each leg member of the present invention is individually adjustable, even if the floor is inclined or there is a structure, the working footboard can always be installed horizontally, so that stable work can be performed.

In addition, by further installing an auxiliary leg member on the leg member, it has the effect of stably supporting the raised working footboard without shaking.

In addition, the length of the ladder member is also adjusted in accordance with the length adjustment of the leg member, so that the operator can easily climb even if the working footrest is positioned at a high position.

1 is a view showing the overall configuration of a folding safety footrest according to a preferred embodiment of the present invention in three dimensions from the front.
Figure 2 is an operating state in which the working scaffold rotates in Figure 1;
Figure 3 is a folding operation state of the leg member.
Figure 4 is a view showing a three-dimensional view from the rear of the worktable of Figure 1;
Figure 5 is a state diagram of the length adjustment operation of the ladder member and the first to fourth leg members in Figure 4;
6 is an operational state diagram of the first to fourth reinforcing leg members.
7 is a view showing the structure of a stopper for fixing the inner and outer frames of the ladder member.
Figure 8 is a view showing the structure of the safety vertical and horizontal frames installed on the folding safety footboard of Figure 1;
FIG. 9 is a view showing a separated state of the safety horizontal frame in FIG. 8;

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the detailed description to be described later, various embodiments of the present invention will be described in order to achieve the above-described technical problem. And other embodiments that may be presented by the present invention are replaced with descriptions in the configuration of the present invention.

1 is a view showing the overall configuration of a stepped safety footboard according to a preferred embodiment of the present invention three-dimensionally from the front, FIG. 2 is an operation state diagram in which the working footboard rotates in FIG. 1, and FIG. 3 is a folding of a leg member It is an operation state diagram, FIG. 4 is a three-dimensional view of the safety footrest of FIG. 1 from the rear, FIG. 5 is an operation state diagram for adjusting the length of the ladder member and the first to fourth leg members in FIG. 4, and FIG. 6 is a first To the fourth reinforcing leg members are operational state diagrams, and FIG. 7 is a view showing the structure of a stopper for fixing the inner and outer frames of the ladder member.

As shown in FIGS. 1 to 7, the folding safety scaffold of the present invention is largely four first to fourth leg members 10, 20, 30, 40, a ladder member 80, and a working scaffold 70. It is divided into and composed.

The four first to fourth leg members 10, 20, 30, and 40 are all manufactured in the same structure, and are preferably manufactured in a structure whose length is adjusted according to the needs of the user.

When describing the structure of one first leg member 10, the first leg member 10 is a hollow outer member 12 with an empty inside, and is inserted to be retractable from the inside of the outer member 12 to the outside. It consists of an inner member 14 and a stopper 16 for fixing and releasing the outer member 12 and the inner member 14.

A hole 12a is formed through the outer member 12, and at least one hole 14a is formed through the inner member 14 along a longitudinal direction of the inner member 14, and the outer member ( After any one hole (14a) formed in the inner member (14) is located on the same line in the hole (12a) of 12), the stopper (16) is inserted into the holes (12a, 14a) to complete the length adjustment. The inner member 14 is fixed to the outer member 12.

As described above, the first to fourth leg members (10, 20, 30, 40) are manufactured in a double frame structure of the inner member 14 and the outer member 12 to meet the needs of the user. The length of the first to fourth leg members 10, 20, 30, and 40 can be adjusted in length, such as a place where the floor is inclined or a staircase on one side of the floor as shown in Fig. When it is necessary to install the safety scaffolding where the structure is installed, if the length of the leg member in one place on the stairs is shortly adjusted, the working scaffold supported by the leg member is irrespective of the difference in height of the steps. It can maintain a horizontal state and perform stable work.

Among the first to fourth leg members, a first leg member 10 and a second leg member 20, and a third leg member 30 and a fourth leg member 40 disposed opposite to each other on both sides A fixing link 50 is installed between the first and second leg members 10 and 20, and the gap between the third and fourth leg members 30 and 40 is maintained.

And between the first leg member 10 and the third leg member 30 and the second leg member 20 and the fourth leg member 40 located in the front and rear of the safety footrest, a foldable link 60 is provided. By installing the first and third leg members (10, 30) and the second and fourth leg members (20, 40) are gathered in the center or spread outward and perform a folding operation to reduce the volume of the safety footrest.

The foldable link 60 has the same structure, and if described as a representative of a foldable link structure installed between the first and third leg members 10 and 30, the foldable link 60 is the first leg member 10 ), the first link 62 pin-coupled to the third leg member 30, the second link 64 pin-coupled to the third leg member 30, and the end of the first and second links 62, 64 It includes a hinge shaft 66 that is coupled to the site.

When this foldable link 60 is to reduce the volume by folding the safety footrest, when the first leg member 10 and the third leg member 30 are pushed to the center, the first and second links 62 and 64 are The hinge shaft 66 is rotated and folded as a starting point, and in this process, the gap between the first and third leg members 10 and 30 is narrowed, and they are folded to each other. Of course, the second and fourth leg members 20 and 40 coupled by the same foldable link 60 also have a narrower gap, and as a result, the volume of the safety footrest can be reduced.

Separate first to fourth reinforcing leg members 110, 120, 130, and 140 are further installed at the lower ends of the first to fourth leg members 10, 20, 30, and 40.

The first to fourth reinforcing leg members 110, 120, 130, and 140 increase the height of the working footrest 70 by increasing the length of the first to fourth leg members 110, 120, 130, and 140. When positioned, the vibration of the working scaffold 70 may occur compared to the lower position, which can convey a considerable sense of anxiety to the operator during work, and the first to fourth reinforcing leg members 110, 120, 130, 140) reinforces the shaking of the working scaffold 70 so that a more stable operation can be achieved.

The first to fourth reinforcing leg members (110, 120, 130, 140) have the same structure and are individually installed on the first to fourth leg members (10, 20, 30, 40). The first reinforcing leg member 110 installed on the first leg member 10 will be described as a representative.

The first reinforcing leg member 110 is a tilting arm 112 whose one end is rotatably coupled to the outer diameter of the inner member 14 of the first leg member 10, and is perpendicular to the other end of the tilting arm 112. It consists of a reinforcing frame 114 that is installed in an erected state.

When the first reinforcing leg member 110 is in use, when the operator pulls it while holding the tilting arm 112 by hand, the tilting arm 112 is a reinforcing frame ( 114) is pulled out of the first leg member 10, and in this state, the reinforcing frame 114 contacts the floor and prevents the shaking of the working foot plate 70 so that the working foot plate 70 in a high position does not shake. It will be reinforced.

The ladder member 80 is a means provided for the purpose of allowing a worker to climb to a working footrest 70 supported on the first to fourth leg members 10, 20, 30, 40.

The ladder member 80 is an inner frame 82, an outer frame 90 pulled out while being fitted to the outside of the inner frame 82, and a stopper for fixing and releasing the inner and outer frames 82 and 90 It consists of (94).

A plurality of scaffolds 84 are installed between the inner frames 82 with a predetermined distance apart. The front end of the inner frame 82 is a fixed link connecting the third leg member 30 and the fourth leg member 40 among the first to fourth leg members 10, 20, 30, and 40 described above ( It is rotatably coupled to the outer diameter of 50).

At least one hole 88 is formed in the inner frame 82, and a stopper 94 is inserted into the hole 88 to fix the inner and outer frames 82 and 90 whose length has been adjusted.

A plurality of scaffolds 92 are installed between the outer frames 90 with a predetermined distance apart. The outer frame 90 is pulled out while being inserted into the outer diameter of the inner frame 82, wherein the outer frame 90 is molded to have a "⊂" cross-sectional shape, and the outer frame 90 During the withdrawal and retracting operation of the outer frame 90 is caught by the foot plate 84 of the inner frame 82 so that interference does not occur.

One hole 93 is formed in the outer frame 90, and the hole 93 communicates with one of the plurality of holes 88 formed in the inner frame 82. In this state, the stopper 94 is fitted so that the inner and outer frames 82 and 90 are fixed.

The stopper 94 is a member that fixes the inner and outer frames 82 and 90 of the ladder member 80 whose length has been adjusted.

The stopper 94 has a structure in which first and second insertion portions 96 and 98 are vertically bent at both ends so as to have a "∪" shape on a plane.

The first insertion portion 96 of the stopper 94 is elastically supported by the spring 100 while being fitted into the groove 98 formed in the foot plate 84 of the inner frame 82, and the second insertion The part 96 is detachably inserted into the holes 88 and 93 communicating with each other in the inner and outer frames 82 and 90, and fixes the inner and outer frames 82 and 90.

The ladder member 80 is adjusted in length by removing or inserting the outer frame 90 from the inner frame 82 according to the height adjustment of the working footrest 70. That is, when the stopper 94 fixing the inner and outer frames 82 and 90 is pulled when adjusting the length, the second insertion part 98 is formed in the holes 88 and 93 of the inner and outer frames 82 and 90. As it exits, the lock is released. At this time, the first insertion part 96 receives the elastic force of the spring 100 while being fitted into the groove 98 of the foot plate 92.

Next, after adjusting the length, when fixing the inner and outer frames 82 and 90 again, a stopper ( When the second insertion portion 98 of 94) is positioned, the second insertion portion 98 is a hole in the inner and outer frames 82, 90 due to the elastic force of the spring 100 transmitted to the first insertion portion 96. The inner and outer frames 82 and 90 are automatically inserted into (88, 93) and the length adjustment has been completed, and are fixed to each other.

The working scaffold 70 is placed on the first to fourth leg members 10, 20, 30, 40, and workers can perform various tasks on the first to fourth leg members 10, 20, 30, 40. It is a plate that provides a place to be able to.

The working scaffold 70 rotates from the hinge 72 in a state in which both sides of the first leg member 10 and the second leg member 20 are hinged to each other. 4 It can be placed on the leg members (10, 20, 30, 40). That is, the working scaffold 70 is supported in a state directly raised above the first to fourth leg members 10, 20, 30, and 40, and thus can effectively support the load of the worker.

Meanwhile, first to fourth brackets 150, 152, 154, 156 are installed at upper ends of the first to fourth leg members 10, 20, 30, and 40, and the first to fourth brackets 150 , 152, 154, 156 are provided with first to fourth safety vertical frames (160, 162, 164, 166), and the first to fourth safety vertical frames (160, 162, 164, 166) have two The first and second safety horizontal frames 170 and 180 are connected to each other as a connection frame.

As shown in the accompanying Figures 8 to 9, the first to fourth safety vertical frames (160, 162, 164, 166) and the first and second safety horizontal frames (170, 180) are workers who have climbed the working scaffold Is protected from falling off during the working process. In particular, the first to fourth safety vertical frames (160, 162, 164, 166) and the first and second safety horizontal frames (170, 180) are configured to be detachable from the outside of the working scaffold so that they can be assembled and used only when necessary. By doing so, the safety of the operator is kept during work without unnecessarily increasing the volume of the safety footing.

Specifically, the first to fourth safety vertical frames (160, 162, 164, 166) are vertically detachably installed on the first to fourth brackets (150, 152, 154, 156), respectively, and then the first At both ends of the safety horizontal frame 170, the connection frame 174 is inserted into the first and third safety vertical frames 160 and 164 in a state in which the connection frame 174 is coupled with a hinge 172 to provide a first safety level. The frame 170 is horizontally connected to the first and third safety vertical frames 160 and 164, and the second and fourth safety vertical frames are connected to the second and fourth safety horizontal frames 180 as a connection frame 184 in this way. By connecting them horizontally to (162, 166), it is possible to prevent the occurrence of safety accidents such as the worker who is working while standing on the working platform falls down.

Hereinafter, the operation of the folding safety footrest of the present invention will be described with reference to FIGS. 1 to 7 attached thereto.

First, when the foldable safety footrest of the present invention is unfolded and used, the first and third leg members 10 and 30, and the second and fourth leg members 20 and 40 are pulled outward, respectively, to form a foldable link. The first and second links 62 and 64 constituting are unfolded while rotating around the hinge shaft 66, and in this process, the first and third leg members 10 and 30, and the second and fourth leg members 20, The gap between 40) widens and becomes unfolded.

Next, after the first to fourth leg members 10, 20, 30, and 40 are unfolded as much as possible, the working scaffold 70 coupled with the hinge 72 to the first and second leg members 10 and 20 is rotated. It is to be placed on the first to fourth leg members 10, 20, 30, and 40.

On the other hand, if the height of the working scaffold 70 is too low than the working position, the height of the working scaffold 70 must be increased. In this case, the length of the first to fourth leg members 10, 20, 30, 40 is increased. Adjust the height of the working plate.

That is, the first leg member 10, for example, by separating the stopper 16, the outer member 12 and the inner member 14 are fixed to each other, and then the inner member 14 is pulled out by a desired length. Next, the stopper 16 is inserted into the holes 12a and 14a formed in the outer member 12 and the inner member 14 again, so that the outer member 12 and the inner member 14 whose length has been adjusted are fixed again. .

On the other hand, if the floor on which the first to fourth leg members 10, 20, 30, and 40 are installed is inclined or there are stairs, the length of the leg member installed at the corresponding position is adjusted differently from other leg members, so that the floor Even if there are structures such as inclined or staircases, the working plate can be placed in a horizontal position at all times.

And the length of the ladder member 80 must also be adjusted in accordance with the elevated working footrest 70, and at this time, the stopper 94 is pulled out and inserted into the holes 88 and 93 formed in the outer frames 82 and 90. After removing the fixing of the inner and outer frames 82 and 90 by pulling out the second insertion part 98, the outer frame 90 is pulled out as long as the desired length, and then the inner and outer parts connected according to the withdrawn length. After placing the second insertion portion 98 in the holes of the frames 82 and 90, when the hand is released, the second insertion portion is caused by the tension force of the spring 100 that elastically supports the first insertion portion 96. 98 is automatically inserted into the holes 88 and 93 of the inner and outer frames 82 and 90, and fixes the inner and outer frames 82 and 90 for which the length adjustment is completed.

On the other hand, when the height of the working footrest 70 is too high to reinforce the shaking, the first to fourth reinforcing leg members installed at the lower ends of the first to fourth leg members 10, 20, 30, 40 ( 110, 120, 130, 140) are pulled out and supported on the floor to stably reinforce the shaking of the working scaffold 70.

For example, when the tilting arm 112 of the first reinforcing leg member 110 is held and pulled by hand, one end of the tilting arm 112 is formed by the inner member 14 of the first leg member 10 as an axis. The reinforcing frame 114 installed vertically at the opposite end while rotating is supported on the floor while protruding out of the first leg member 10, and the first to fourth reinforcing leg members 110 , 120, 130, 140) is to be able to catch the shaking of the work scaffold 70, the height is increased.

10: first leg member 20: second leg member
30: third leg member 40: fourth leg member
50: fixed link 60: foldable link
70: working scaffold 80: ladder member
82: inner frame 90: outer frame
94: stopper

Claims (2)

The first to fourth leg members (10, 20, 30, 40), and the first to fourth leg members (10, 20, 30, 40) mounted on the working scaffold 70, the working scaffold (80) In the folding safety footrest including the ladder member 80 to be able to climb to,
The first leg member 10;
A hollow outer member 12 having an empty inside;
An inner member 14 inserted to be retractable from the inside of the outer member 12 to the outside;
And a stopper 16 for fixing and releasing the outer member 12 and the inner member 14;
The second to fourth leg members 20, 30, and 40 are manufactured in the same structure as the first leg member 10 and configured to adjust the height of the working footrest 70 according to the working position;
A fixing link 50 is installed between the first leg member 10 and the second leg member 20 and between the third leg member 30 and the fourth leg member 40;
The first and third leg members 10 and 30 between the first leg member 10 and the third leg member 30 and between the second leg member 20 and the fourth leg member 40 And a foldable link 60 configured to fold the second and fourth leg members 20 and 40 to be connected in a foldable manner so as to gather in the center or spread outward;
The ladder member 80 is;
A pair of inner frames that are arranged to face each other and have a front end rotatably coupled to the outer diameter of the fixed link 50 installed between the third leg member 30 and the fourth leg member 40 ( 82);
A scaffolding 84 installed at a predetermined interval between the inner frames 82;
A pair of outer frames 90 molded in a "⊂" cross-sectional shape to be fitted to the outer surface of the inner frame 82 so as to be retractable to the outside;
A scaffold 92 installed at a predetermined interval between the outer frames 90;
A first insertion part 96 that is elastically supported by a spring 100 while being inserted into a groove 98 formed in the foot plate 84 of the inner frame 82;
It has a second insertion portion 98 that is located opposite the first insertion portion 96 and is detachably inserted into the holes 88 and 93 that are connected to each other to the inner and outer frames 82 and 90. Consisting of a stopper 94;
First to fourth reinforcing leg members (110, 120, 130, 140) are further installed at the lower ends of the first to fourth leg members (10, 20, 30, 40);
The first reinforcing leg member 110 is;
A tilting arm 112 whose one end is rotatably coupled to the outer diameter of the inner member 14 of the first leg member 10;
It is installed in a state that is vertically erected at the other end of the tilting arm 112 and exits out of the first leg member 10 according to the rotational motion of the tilting arm 112 and is fixed to the floor. Make up;
The second to fourth reinforcing leg members 120, 130, and 140 are manufactured in the same structure as the first reinforcing leg member 110 and are attached to the second to fourth leg members 120, 130, and 140. Foldable safety footrest, characterized in that to be installed respectively.
The method of claim 1,
First to fourth brackets 150, 152, 154, 156 are installed at upper ends of the first to fourth leg members 10, 20, 30, and 40, and the first to fourth brackets 150, 152 , 154, 156 are provided with first to fourth safety vertical frames (160, 162, 164, 166), and the first to fourth safety vertical frames (160, 162, 164, 166) have two first , Foldable safety footrest, characterized in that the two horizontal safety frames (170, 180) are connected to each of the connecting frames (174, 184).

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