JP2005042507A - Outrigger and outrigger attached body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outrigger to be attached on a trestle such as a stepladder, wherein the freedom of installation position on the trestle is raised, which can be operated easily, and which can be increased in size without inviting structural complication when required. <P>SOLUTION: The outrigger comprises a pair of upper and lower swinging pivot parts 7 and 9 separately provided in the upper part and the lower part, an upper leg part 5 swingably held on the upper swinging pivot part 7 of the pair in a downwardly swinging direction, a lower leg part 6 held on the upper leg part 5 slidably along the longitudinal direction and an opening setting link 8 having both ends connected swingably between the lower leg part 6 and the lower swinging pivot part 9. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an outrigger and an outrigger mounting body.

Outriggers that are attached to stepladders, ladders, work tables, etc. (hereinafter simply referred to as “stepladders”, etc.) to prevent rolls and falls during use and to improve stability are known (for example, , See Patent Documents 1 to 3). These outriggers are provided so as to project obliquely toward the left and right sides of an installation leg such as a stepladder, and are used by projecting between the grounding surface.
On the other hand, conventionally, an outrigger 100 as shown in FIG. 10 is also known. The outrigger 100 includes a rail 102 attached to an installation leg 101 such as a stepladder in a surface contact manner, a slider 103 held movably along the rail 102, and a leg member that is swingably connected to the slider 103. 104 and a link 105 connected between the leg member 104 and the rail 102. The slider 103 is provided with a lever operating portion 106 that slides with respect to the rail 102 and locks or unlocks the positioning. The lever operation unit 106 is provided on the upper side of the slider 103. However, when the outrigger 100 is not used, the rail 102 and the leg member 104 are parallel to each other, and the slider 103 is positioned at the upper end of the rail 102 when in close contact. Therefore, the lever operation unit 106 is also positioned at the upper end (uppermost position) of the rail 102.

That is, in the outrigger 100, after the installation leg 101 is installed on a stepladder or the like, the lever operation unit 106 waiting at the uppermost position is unlocked, and the slider 103 is slid downward along the rail 102 as it is. The slider 103 is stopped when the lower end of the leg member 104 is grounded, and the lever operation unit 106 is locked while maintaining this state. Therefore, since the angle at which the leg member 101 projects obliquely can be changed according to the use situation, it can be used even when the ground contact surface on which the stepladder or the like is to be installed is not flat.
JP 10-196259 A JP 2002-194981 A JP 2003-172084 A

In the outrigger 100 shown in FIG. 10, since the rail 102 has to be attached to the installation leg 101 such as a stepladder in a surface contact state, a protrusion such as a rivet or a bolt or a reinforcing rib or decoration is provided on the installation leg 101 side. If there is unevenness for this purpose, the rail 102 cannot be attached, or the attachment position of the rail 102 may be restricted in the vertical direction of the installation leg 101 such as a stepladder.
The link 105 connecting the rail 102 and the leg member 104 swings up and down as the slider 103 slides, but is connected to the rail 102 near its lower end, and this position is Since the mounting position of the rail 102 is considerably higher than the installation leg 101, the link 105 connects the leg member 104 to the installation leg 101 when the lower end portion of the leg member 104 is grounded. As a result, the leg member 104 is insufficiently projected in an oblique direction, and as a result, the effect as the outrigger 100 may be insufficient.

Further, when the mounting position of the rail 102 with respect to the installation leg 101 such as a stepladder is set to the upper position or the lower position, the positioning of the lever operation unit 106 is also moved up and down in association with this. Since the operation unit 106 is provided at the upper end (uppermost position) of the rail 102, in some cases, the usability of the lever operation unit 106 may be extremely deteriorated.
On the other hand, in order to slide the slider 103 along the rail 102 in order to open or close the leg member 104, the lever operation unit 106 remains in the unlocked state as described above. That is, it is necessary to perform the unlocking operation or the locking operation of the lever operation unit 106 before and after the sliding of the slider 103, which is troublesome.

  The present invention has been made in view of the above circumstances, and has a high degree of freedom in the mounting position with respect to an installation leg such as a stepladder, is easy to operate, and does not cause structural complexity. It is an object to provide an outrigger and an outrigger mounting body that can be enlarged as required.

In order to achieve the above object, the present invention has taken the following measures.
That is, the outrigger 1 according to the present invention swings in a downward swing direction with respect to a pair of upper and lower swing fulcrum portions 7 and 9 provided apart from the upper and lower portions, and of the upper swing fulcrum portion 7 among them. An upper leg portion 5 that is freely held, a lower leg portion 6 that is slidably held along the longitudinal direction on the upper leg portion 5, and a lower fulcrum fulcrum portion 9 between the lower leg portion 6 and the lower fulcrum fulcrum portion 9. And an opening setting link 8 which is connected with both ends being swingable.
As described above, the upper swing fulcrum portion 7 and the lower swing fulcrum portion 9 are provided so as to be separated from each other in the vertical direction. The positional relationship is not limited at all. In addition, since both the upper swing fulcrum portion 7 and the lower swing fulcrum portion 9 can reduce the mounting area with respect to the installation leg 3, even if there are protrusions or irregularities on the installation leg 3, It is easy to avoid interference. From these things, the freedom degree of the attachment position with respect to the installation legs 3, such as a stepladder, is high.

The upper leg portion 5 may be provided with an expansion / contraction operation portion 20 that can lock and unlock the position where the lower leg portion 6 is slid relative to the upper leg portion 5. In this case, it is preferable to provide the expansion / contraction operation unit 20 near the lower end of the upper leg 5. Thus, by providing the telescopic operation part 20 with respect to the upper leg part 5, it becomes easy to see for a user and operation becomes easy.
A rack rail 37 is provided along the longitudinal direction of the lower leg 6, and a brake piece 28 that can be engaged with the rack rail 37 of the lower leg 6 is provided as the telescopic operation part 20 provided in the upper leg 5. Thus, the brake piece 28 can be brought into and out of contact with the rack rail 37. The telescopic operation unit 20 can detach the brake piece 28 from the rack rail 37 against the urging force of the spring member 30 and the spring member 30 that urges the brake piece 28 to mesh with the rack rail 37. What is necessary is just to have the operation body 29 to be taken. Therefore, the engagement state of the brake piece 28 with the rack rail 37 is maintained unless an operating force is applied to the operating body 29.

By adopting such a structure, the structure can be simplified, and the sliding operation of the lower leg 6 with respect to the upper leg 5, the opening of the upper leg 5, 6 can be locked in the state after sliding, and can be easily and quickly operated.
On the other hand, the outrigger mounting body 2 according to the present invention has an installation leg 3 such as a stepladder, a ladder, and a work table, and the outrigger 1 according to the present invention is provided on a side surface of the installation leg 3. Yes. The outrigger 1 is provided on the installation leg 3 via upper and lower swing fulcrum parts 7 and 9, and the upper leg part 5 is opened when the upper leg part 5 is opened with the upper swing fulcrum part 7 as a fulcrum. The extension of the lower leg portion 6 is regulated on the swing locus of the opening setting link 8 with the lower swing support portion 9 as a fulcrum.

  In the outrigger according to the present invention, the degree of freedom of the attachment position with respect to the installation leg 3 such as a stepladder is high, and the operation becomes easy. Further, it is possible to increase the size as necessary without causing structural complexity. Moreover, the outrigger mounting body (stepladder or the like) according to the present invention can be used stably without rolling or falling, and the outrigger can be installed easily and quickly.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an outrigger mounting body 2 on which an embodiment of an outrigger 1 according to the present invention is mounted. In the illustrated example, the outrigger mounting body 2 is a stepladder, the left and right installation legs 3 are paired, and there are two pairs in the front and rear, and a plurality of upper and lower steps 4 are provided between the installation legs 3 that form a pair on the left and right. Yes. Outriggers 1 are mounted on the laterally facing side of the installation legs 3 that are paired on either side in the front or back direction.
The outrigger 1 has an upper leg portion 5 and a lower leg portion 6. An upper swing fulcrum portion 7 is provided on the upper leg portion 5. An opening setting link 8 is connected to the lower leg 6, and a lower swing fulcrum 9 is provided at the tip of the opening setting link 8. The upper swinging fulcrum part 7 and the lower swinging fulcrum part 9 are provided apart from each other at the upper part and the lower part.

  As shown in FIGS. 2 to 4, the upper leg portion 5 is formed of a square pipe material. In contrast, the lower leg portion 6 is formed of a channel material having a U-shaped cross section. In any case, the material may be an aluminum alloy or the like. The upper leg portion 5 and the lower leg portion 6 have a dimensional relationship that allows the lower leg portion 6 to be inserted into the upper leg portion 5 without rattling and to be slidable. A stopper receiver 15 is provided in the upper leg portion 5 at a position near the lower end thereof so as to protrude inward of the pipe, and the lower leg portion 6 is provided with a roller type inside the position at the upper end portion. A stopper 16 is provided. Accordingly, when the lower leg portion 6 is slid in the direction in which the lower leg portion 6 is pulled out from the upper leg portion 5, the stopper 16 of the lower leg portion 6 comes into contact with the stopper receiver 15 of the upper leg portion 5 to prevent further sliding. The lower leg 6 is prevented from escaping from the leg 5. The stopper receiver 15 of the upper leg 5 is provided with respect to an operation plate 21 described later (see FIG. 6), and is fixed to the upper leg 5 via the operation plate 21.

  The upper leg portion 5 is provided with a telescopic operation portion 20. The telescopic operation part 20 is positioned closer to the lower end part of the upper leg part 5. The telescopic operation unit 20 is formed by assembling a plurality of components on the back surface of the operation plate 21 attached to the installation leg 3 of the outrigger mounting body 2 as a substrate. As shown in FIG. 5, on the front surface of the operation plate 21, there is provided an explanation display surface 22 describing the method of operation, and the upper side of the explanation display surface 22 is in a locked state or an unlocked state. Is displayed, and an operation window 24 is provided on the lower side of the explanation display surface 22.

  As shown in FIGS. 6 and 7, a square pipe-shaped bracket member 27 with the penetrating direction facing forward and backward is fixed to the back surface of the operation plate 21, and the brake piece 28 is disposed forward and backward inside the bracket member 27. It is slidably stored. An operating body 29 having a vertically long frame shape is fitted to the outside of the bracket member 27 so as to be movable up and down. A spring member 30 is loaded between the upper portion of the bracket member 27 and the ceiling surface in the frame of the operating body 29, and the operating body 29 applies a biasing force in a direction in which the operating body 29 is pushed upward. Is done.

  First cam holes 33 that are long in the front-rear direction are provided in the left and right side walls of the bracket member 27, and second cam holes that are inclined with both front-rear and vertical components in the left and right side plates of the operating body 29. 34 is provided. When the operating body 29 is fitted to the bracket member 27 on both the left and right outer walls of the brake piece 28 and the brake piece 28 is assembled to the bracket member 27, the first cam hole 33 of the bracket member 27 and the operating body 29 The cam shaft 35 is provided in a state where the first cam holes 33 and 34 are inserted in a skewered manner at a position where the second cam hole 34 intersects. When the operating body 29 is fitted into the bracket member 27 (the back side of the operating plate 21) in this way, the lower horizontal plate 29a of the operating body 29 is visible from the operating window 24 of the operating plate 21. (See FIG. 2).

  Therefore, it is possible to insert the finger through the operation window 24 of the operation plate 21 and operate the finger plate to push down the horizontal plate 29a of the operation body 29 downward. When the operation body 29 is moved downward by this operation, the inclined second cam hole 34 simultaneously applies a pushing force in the front-rear direction and the up-down direction to the cam shaft 35 of the brake piece 28. The cam shaft 35 of the bracket 29 is only allowed to move in the front-rear direction by the first cam hole 33 of the bracket member 27. As a result, the cam shaft 35 transmits only the pushing force in the front-rear direction to the brake piece 28 as a propulsive force. 28 moves in the forward direction.

  Since the operating body 29 receives the urging force that pushes upward by the spring member 30, if the operation of pushing down the horizontal plate 29 a of the operating body 29 is stopped, the operating body 29 returns upward. Accordingly, as shown in FIG. 6B, the brake piece 28 protrudes rearward (right side in the figure). As a result, when the operating body 29 is not operated, the brake piece 28 is in a state where the rearward protruding state is a spring. It is to be maintained by member 30. When the brake piece 28 protrudes rearward in this way, the rear end portion of the brake piece 28 abuts against the inner bottom portion of the lower leg portion 6 as shown in FIG. Create power.

As is clear from this, the brake piece 28 moves forward (left side in the figure) as shown in FIG. Accordingly, the rear end portion of the brake piece 28 is separated from the inner bottom portion of the lower leg portion 6, and the braking force of the lower leg portion 6 against the upper leg portion 5 is also released.
In order to increase the braking force generated when the rear end portion of the brake piece 28 comes into contact with the inner bottom portion of the lower leg portion 6, a rack rail 37 is provided in the lower leg portion 6 along the longitudinal direction thereof. A rack tooth row 38 that can mesh with the rack rail 37 is provided at the rear end of the brake piece 28. Since the rack rail 37 and the rack tooth row 38 mesh with each other, a braking force without slipping of the lower leg 6 with respect to the upper leg 5 occurs, so that the positioning of the lower leg 6 with respect to the upper leg 5 is also this. Fine adjustment is possible according to the fine tooth pitch of the rack rail 37 and the rack tooth row 38.

  As shown in FIG. 7, a display piece 40 bent in an L shape is provided on the upper portion of the operation body 29. The front surface of the display piece 40 is an unlock display surface 40a indicating the unlocked state in the upper half, for example, is red, and the lower half is a lock display surface 40b indicating the locked state, for example, in blue. It has become. As shown in FIG. 6B, when the operating body 29 is not operated (when the braking force of the brake piece 28 is generated) and is stopped upward, a lock display is displayed from the state display window 23 of the operating plate 21. When the surface 40b is exposed and the operating body 29 is moved downward during operation (when the braking force of the brake piece 28 is released) as shown in FIG. 6A, the state display window 23 of the operation plate 21 is unloaded. The lock display surface 40a is exposed to notify the user of the lock state.

As shown in FIG. 8, the upper swing fulcrum portion 7 can swing the upper leg portion 5 in the swinging direction downward by a swing shaft 44 that penetrates the upper end portion of the upper leg portion 5 in a skewered manner in the left-right direction. It is to be held. In the present embodiment, a bolt is used for the swing shaft 44 and both ends thereof are supported by a U-shaped bracket 45. What is necessary is just to screw the bracket 45 to the installation leg 3 of the outrigger mounting body 2 with a tapping screw, a bolt, a nut, or the like.
As shown in FIG. 9, the opening setting link 8 has one end portion pivotably connected to an intermediate position in the longitudinal direction of the lower leg portion 6, and the lower swing fulcrum portion 9 is pivotably connected to the other end portion. . In the present embodiment, the opening setting link 8 is formed by bending a steel round bar material at both ends in a L-shape at right angles and connecting these bent portions to connecting end portions 8a and 8b, respectively. I'm allowed. The opening setting link 8 and the lower leg portion 6 are connected by inserting one connecting end portion 8a into the lower leg portion 6 in a skewered manner in the left-right direction, and applying a retaining means 47 such as a split pin. It is. The lower swing fulcrum portion 9 holds the other connecting end portion 8b of the opening setting link 8 so as to be swingable in the vertical direction. The connecting end 8b is inserted in a skewered manner, and a retaining means 49 such as a split pin is applied. The bracket 48 may be screwed to the installation leg 3 of the outrigger mounting body 2 with a tapping screw, a bolt, a nut, or the like.

  When the outrigger 1 is attached to the installation leg 3 of the outrigger mounting body 2 (see FIG. 1), the upper swing fulcrum portion 7 and the lower swing fulcrum portion 9 are provided apart from each other in the outrigger 1. The relative positional relationship is not limited at all. Further, since the upper swing fulcrum part 7 and the lower swing fulcrum part 9 have a small mounting area with respect to the installation leg 3, the installation leg 3 has protrusions such as rivets and bolts, or has a reinforcing rib and irregularities for decoration. Even so, it is easy to avoid interference with them. Therefore, the freedom degree of the attachment position with respect to the installation leg 3 is high. For example, since the expansion / contraction operation part 20 is positioned near the lower end of the upper leg part 5, the height of the expansion / contraction operation part 20 is used as a reference (so that the expansion / contraction operation part 20 is easily visible and easily operated. It can be said that the mounting position of the outrigger 1 with respect to the installation leg 3 is determined.

A grounding seat 50 is connected to the lower end of the lower leg 6 via a universal joint structure.
In the outrigger mounting body 2 having such a configuration, after the installation leg 3 is installed, the upper leg 5 is moved as it is with the upper swinging fulcrum 7 as a fulcrum while operating the operation body 29 of the telescopic operation unit 20 in the push-down direction. Open up. Then, the lower leg part 6 extends downward from the upper leg part 5 due to its own weight. At this time, the connection position between the lower leg part 6 and the opening degree setting link 8 is an opening setting with the lower swing fulcrum part 9 as a fulcrum. Since the link 8 is regulated on the swinging locus, the extension of the lower leg portion 6 works in conjunction with increasing the opening degree of the upper leg portion 5, and the lower end portion of the lower leg portion 6 is eventually grounded. To the state of. Therefore, the lower leg portion 6 continues to extend until reaching the ground contact surface regardless of whether the ground contact surface is flat or not. That is, the grounding surface is surely grounded, and the opening degree of the upper leg portion 5 (outrigger 1 as a whole) is expanded and contracted according to the grounding surface level (whether there are undulations, steps, etc.). If the operating body 29 of the telescopic operation unit 20 is released when the lower leg 6 has been extended for a predetermined length, the locked state is automatically achieved.

When the outrigger mounting body 2 is removed, the lower leg 6 is simply lifted toward the upper leg 5 while operating the operating body 29 of the telescopic operating section 20 of the outrigger 1 in the push-down direction (at this time) It is easy to hold the opening setting link 8 and swing it upward).
The present invention is not limited to the above-described embodiment, and can be appropriately changed according to the embodiment.

It is the side view which showed one Embodiment of the outrigger mounting body which concerns on this invention. It is the front view which expanded and showed a part of outrigger (periphery operation part periphery). It is the sectional view on the AA line of FIG. It is the BB line enlarged view of FIG. FIG. 3 is an enlarged view showing a part (operation plate) in FIG. 2. It is the side view which showed the operation condition of the expansion-contraction operation part. It is a disassembled perspective view of an expansion / contraction operation part. It is a disassembled perspective view of an upper rocking fulcrum part. It is a disassembled perspective view of an opening setting link and a lower swing fulcrum part. It is the side view which showed the condition which mounted | wore the conventional outrigger on the stepladder.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outrigger 2 Outrigger mounting body 3 Installation leg 5 Upper leg part 6 Lower leg part 7 Upper rocking fulcrum part 8 Opening setting link 9 Lower rocking fulcrum part 20 Telescopic operation part 28 Brake piece 29 Operation body 30 Spring member 37 Rack rail

Claims (6)

  A pair of upper and lower swing fulcrum portions (7, 9) provided apart from the upper portion and the lower portion, and of these, the upper swing fulcrum portion (7) is swingably held in the downward swing direction A leg part (5), a lower leg part (6) slidably held in the longitudinal direction on the upper leg part (5), a lower leg part (6) and a swing fulcrum part (9) on the lower side And an opening setting link (8) connected at both ends so as to be swingable.   The upper leg portion (5) is provided with a telescopic operation portion (20) capable of locking and unlocking the position where the lower leg portion (6) is slid relative to the upper leg portion (5). The outrigger according to claim 1, wherein:   The outrigger according to claim 2, wherein the telescopic operation part (20) is provided near the lower end part of the upper leg part (5).   The lower leg portion (6) is provided with a rack rail (37) along the longitudinal direction thereof, and the telescopic operation portion (20) provided on the upper leg portion (5) is connected to the rack rail (37). The outrigger according to claim 2 or 3, characterized in that a meshable brake piece (28) is provided and the brake piece (28) can be brought into and out of contact with the rack rail (37).   The telescopic operation section (20) includes a spring member (30) that biases the brake piece (28) to mesh with the rack rail (37), and the brake piece (28) of the spring member (30). An operating body (29) that can be separated from the rack rail (37) against the urging force, and the brake piece (28) moves to the rack rail (37) unless an operating force is applied to the operating body (29). The outrigger according to claim 4, wherein the meshing state is maintained.   It has an installation leg (3), and the outrigger (1) according to any one of claims 1 to 5 has an upper and lower swing fulcrum (7, 9) on a side surface of the installation leg (3). ), And the lower leg (6) extends from the upper leg (5) when the upper leg (5) is opened with the upper swinging fulcrum (7) as a fulcrum. An outrigger mounting body characterized by being structured to be regulated on the swing locus of the opening setting link (8) with the dynamic fulcrum (9) as a fulcrum.

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