JP3433420B2 - Portable workbench - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable workbench having a clue rod for ensuring the safety of people and improving workability.

[0002]

2. Description of the Related Art As a portable workbench of this type, for example, one shown in FIG. 15 is known. This portable workbench 1
Is four columns 11, a top plate (work floor) 12 supported at a predetermined height by these columns 11, and the top plate 1
2 and a clue bar 2 protruding upward from the position 2. Two struts 11 are provided at each end of the top plate 12 in the longitudinal direction, and the two struts 11 at each end are connected to these struts 11 to form a plurality of cross rails 11a. Is provided. Further, the support column 11 can be folded on the back side of the top plate 12, and the top plate 12 can also be folded and folded upward by a hinge 12a provided at the center thereof.

As shown in FIG. 16, the clue rod 2 is attached to a bracket 21 fixed to the side edge of the top plate 12 by bolts 2a and nuts 2b, and is provided so as to extend above the top plate 12. Has been. The bracket 2
1 is at each end of the top plate 12 in the longitudinal direction,
It is provided on the side edge on the left side of the position where "a" is raised.
That is, when viewed in FIG. 15, the right-side clue rod 2 is provided on the front side edge of the top plate 12, and the left-side clue rod 2 is provided on the far side edge of the top plate 12. It is provided.

The bracket 21 is, as shown in FIGS. 16 and 17, a main body portion 21a fixed to a side edge portion of the top plate 12.
A rectangular guide tube 21b that is integrally connected to the main body portion 21a by welding or the like and that guides the clue bar 2 above the top plate 12, and a support plate that integrally extends upward from the guide tube 21b. 21c. Also, the support plate 2
The 1c and the main body portion 21a are configured to horizontally support the screw rod 23.

The clue rod 2 is formed with an elongated hole 22a extending in the axial direction at the base end thereof.
The screw rod 23 is inserted through a. That is, the clue rod 2 is connected to the bracket 21 so as to be rotatable about the screw rod 23 and axially movable along the elongated hole 22a. Also, the clue stick 2
The other screw rod 24 that penetrates the upper part of the long hole 22a.
Is provided. A tension spring 25, which exerts a force to draw the screw rods 23 and 24 toward each other, is stretched over the screw rods 23 and 24.

Since the tension spring 25 pulls the clue rod 2 downward with respect to the screw rod 23 fixed to the bracket 21, the upper end of the long hole 22a in the clue rod 2 is always pressed against the screw rod 23. To maintain.

Therefore, the clue bar 2 is attached to the bracket 21.
When the guide rod 21b is fitted, the screw rod 23 comes into contact with the upper end of the long hole 22a, and the clue rod 2 projects upward from the top plate 12. Thus, the operator on the top plate 12 can work safely and improve work efficiency by holding the clue bar 2 or supporting the body. Further, when the clue rod 2 is moved upward (in the direction of arrow U in FIG. 16) and the lower end of the elongated hole 22a is brought into contact with the screw rod 23, the lower end of the clue rod 2 comes out above the guide cylinder 21b. By rotating the clue rod 2 around the screw rod 23 in this state, the clue rod 2 can be tilted along the side edge portion of the top plate 12 as shown in FIG.

[0008]

However, in the above-mentioned conventional portable workbench 1, since the bracket 21 is fixed to the top plate 12 with the bolts 2a and the nuts 2b, the clue bar 2 is attached to the bracket 21. , The clue bar 2 and the bracket 21 cannot be completely removed when the worktable is not used, and therefore, the clue bar 2 and the bracket 2 cannot be removed.
There is a problem that 1 may interfere with the work.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a portable workbench that can externally remove a clue rod when it is unnecessary. Is.

[0010]

In order to achieve the above object, the present invention has a work floor supported by a plurality of columns, and a portable work platform having a clue bar projecting upward from the work floor. in at least one of said strut is constituted by a housing post formed into a cylindrical shape so as to be accommodated the clues rod, the housing posts
Has its lower end facing the outside of the work floor with respect to the upper end.
As the spread position Te is inclined, the cue stick, the projects from the housing post upwardly, relative to the axis of the housing posts, or is held in a state inclined to the outside of the work surface, the housing It is configured so that it can be held in a state that it is stored in the support column, and the inside of the storage column is in the axial direction.
Mounted on the upper end of the storage strut
So that it can be movably supported by the
And the slider is the lower end of the clue bar.
Part is supported at a predetermined fulcrum position.
The cap supports the clue rod slidably in the axial direction.
And the axial center position of the opening is
Note that the slider is displaced from the fulcrum position outside the work floor.
It is provided in the storage (Claim 1).

Further, in the present invention, the storage strut has an upper locking hole for holding the clue rod in a state of protruding upward from the storage strut and a lower side for holding the clue rod in a state of being stored in the storage strut. It is preferable that the slider has a convex body configured to be able to be locked in the upper side locking hole or the lower side locking hole.
2 ) In addition, when the convex body is locked in the lower locking hole, the storage column is bent by a predetermined amount to store elastic force, and the lower locking hole of the convex body is stored. It is preferable to have an elastic means configured to push the upper end portion of the clue rod upward by a predetermined amount from the cap by the elastic force when the locked state with respect to is released (claim 3 ). .

According to the portable workbench of the present invention constructed as described above, the clue bar is projected upward from the storage column and is held in a state of being inclined to the outside of the work plate with respect to the axis of the storage column. As a result, the same clue rod projects upward from the work floor. Therefore, it is possible to ensure the safety of the worker in getting on and off the work floor and working on the work floor by the clue stick protruding upward. In addition, since the upper edge of the clue rod in the protruding state is greatly inclined so that the upper end of the clue rod is located outside the work floor with respect to the axis of the storage column, the work area on the work floor is narrowed by the protrusion of the clue rod. Can be prevented. On the other hand, when the clue rod is stored in the storage column, the clue rod is apparently absent.
That is, when the clue rod is not needed, the clue rod can be stored in the storage column so that the clue rod can be externally removed. Therefore, it is effective when the clue bar rather interferes with the work (claim 1).

Further, since the lower end of the storage column is inclined with respect to the upper end so as to expand toward the outside of the work floor, the storage column can stably support the work floor. However, since the storage column is inclined as described above, the clue stick protruding from this storage column is
It will be inclined so that its upper end is located inside the work floor. That is, the work area on the work floor is narrowed by the protrusion of the clue rod.

However, since the axial center position of the opening of the cap for slidably supporting the clue rod is provided at a position displaced to the outside of the work floor from the fulcrum position of the slider for supporting the lower end of the clue rod. As the clue bar is projected upward from the storage column, the tilt of the clue bar changes so that the upper end is located outside the work floor.

That is, since the axial center position of the opening portion of the cap is displaced to the outside of the work floor from the fulcrum position of the slider, the upper end portion of the clue rod has the upper end portion of the accommodating strut even when it is accommodated in the accommodating strut. It is tilted so that it is located outside the work floor. However, at the time of storage, the lower end of the clue bar is located below the storage column,
Since the dimension between the opening of the cap and the fulcrum position of the slider is long, the inclination of the clue bar is almost equal to the inclination of the storage column. That is, the opening
The dimension between the shaft center position and the slider fulcrum position is set as the stored shaft size X1, and the size where the shaft center position of the opening of the cap deviates from the slider fulcrum position to the outside of the work floor is set as the eccentric size Y. Further, when the inclination of the clue rod with respect to the storage column is the storage inclination angle θ1, tan θ1 = Y / X1. Therefore, the clue bar is tilted by the storage tilt angle θ1 so that the upper end of the clue bar is located outside the working floor with respect to the storage column. However, the axial dimension X1 when stored
Is large, θ1 is almost zero, and therefore the inclination of the clue bar is almost equal to the inclination of the storage column.

However, when the clue stick projects upward from the storage strut, the lower end of the clue stick is located above the storage strut, that is, near the cap, and the opening of the cap is removed .
The dimension between the axial position and the fulcrum position of the slider is extremely short. For this reason, the clue rod is tilted more with respect to the storage column so that its upper end is located outside the working floor. That is, the dimension between the axial center position of the opening of the cap and the fulcrum position of the slider when the clue rod is projected is the projected axial dimension X2, and the tilt of the clue rod with respect to the storage column is the projected tilt angle θ2. Then, tan θ2 = Y / X2. Therefore, the clue rod at the time of protrusion is inclined such that the upper end portion thereof is positioned outside the work floor with respect to the axis of the storage column by the inclination angle θ2 at the time of protrusion. Since the axial dimension X2 at the time of protrusion is small, even if the eccentric dimension Y is limited to the dimension between the inner surfaces of the storage columns and can take a small value, the inclination angle θ2 at the time of protrusion can be made large. .

As a result of the above, even if the lower end of the storage column is inclined with respect to the upper end toward the outside of the work floor, the upper end of the clue bar in the protruding state is stored. It is in a state of being greatly inclined with respect to the axis of the column so that it is located outside the work floor. Therefore, it is possible to prevent the work range on the work floor from being narrowed by the protrusion of the clue rod (Claim 1 ).

Further, by locking the convex body provided on the slider in the upper locking hole of the storage column, the clue rod can be securely held in a state of protruding from the storage column.
Further, by locking the convex body in the lower locking hole, it is possible to reliably hold the clue rod in the state of being housed in the housing column (claim 2 ). In addition, when the clue rod is stored in the storage column, the upper end of the cue rod moves upward by a predetermined amount from the upper end of the storage column, that is, the cap, when the locking state with respect to the lower locking hole of the convex body is released. Will be pushed out. Therefore, when the clue rod is projected upward, it is possible to easily pull up the clue rod by grasping the upper end portion of the clue rod projecting from the cap by a predetermined amount (claim 3 ).

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, elements common to the constituent elements shown in the conventional example are designated by the same reference numerals, and the description thereof will be simplified.

FIG. 1 is a sectional view of an essential part of a portable workbench shown as an embodiment of the present invention. (A) is a sectional view showing a state in which a clue bar is projected from a storage column, and (b) is a sectional view. FIG. 2 is a cross-sectional view showing a state in which the clue rod is stored in the storage column, FIG. 2 is a cross-sectional view of a main part of the portable worktable, and FIG.
1A is a cross-sectional view taken along the line AA, FIG. 1B is a cross-sectional view taken along the line BB of FIG. 1B, FIG. 3 is a cross-sectional view of a main part of FIG. 1A, and FIG. 1 (b) is a sectional view of an essential part, and FIG.
6 is a sectional view taken along the line VI-VI of FIG. 4, FIG. 7 is a view taken along the line VII of FIG. 4, and FIG. 8 is a section taken along the line VIII-VIII of FIG.
9 is a cross-sectional view taken along the line, FIG. 9 is a perspective view of a main part showing details of the clue rod, FIG. 10 is a view showing a slider, FIG. 11 is a front view showing a stopper pin and a wire spring, FIG. 12 is a view showing a cap, and FIG. 13 is a front view of the portable workbench, and FIG. 14 is a view of FIG.
It is a XIV arrow line view.

The portable workbench 10 shown in this embodiment is
As shown in FIGS. 1 to 14, a plurality (in this embodiment, 4
Top plate (working floor) 12 supported by the pillars 13)
And has a clue stick 3 protruding upward from the top plate 12.
Each of the columns 13 is formed in a tubular shape capable of accommodating the clue rod 3. However, the clue stick 3 is 4
Of the two columns 13, only the two columns 13 located on the right side of FIG. 13 are provided. Note that the support column 13 provided with the clue rod 3 is shown as a storage support column 130 in order to distinguish it from the other support columns 13. The clue stick 3 is
It can be held in a state of protruding upward from the upper end of the storage column 130, or can be held in a state of being stored in the storage column 130.

Further, each of the columns 13 including the storage column 130.
Is inclined so that its lower end is located at a position that widens toward the outside of the top plate 12 with respect to the upper end.
It supports 2 stably. Clue stick 3
Is a slider 4 that is movable in the storage column 130 in the axial direction.
And the cap 5 provided on the upper end of the storage column 130.
And are movably supported by.
The slider 4 is adapted to connect and support the lower end of the clue rod 3 at a predetermined fulcrum position 41, and the cap 5 is
Opening 5a for slidably supporting the clue rod 3 in the axial direction
have. The axial center position 53 of the opening 5a is provided at a position displaced to the outside of the top plate 12 with respect to the fulcrum position 41 of the slider 4 (see FIGS. 5 to 7) .

Further, the storage strut 130 has an upper locking hole 13a for holding the clue rod 3 in a state of protruding upward from the storage strut 130, and a lower holding hole 13a for holding the clue rod 3 in the storage strut 130. It has a side locking hole 13b. The slider 4 has an upper locking hole 13a or a lower locking hole 1a.
Stopper pin (convex body) 6 that can be locked to 3b
Have one. Further, the storage column 130 is
When the stopper pin 61 is locked in the lower locking hole 13b, it is bent by a predetermined amount to store an elastic force, and when the locked state of the stopper pin 61 to the lower locking hole 13b is released, the above-mentioned elasticity is obtained. It has a leaf spring (elastic means) 7 configured to push the upper end of the clue bar 3 upward from the cap 5 by a predetermined amount by force.

The above structure will be described in more detail below. That is, the storage column 130 is integrally formed of, for example, an extruded shape member made of aluminum, and as shown in FIG. 8, mainly the front surface plate portion 13c, the back surface plate portion 13d, the outer side surface plate portion 13e, The inner side plate portion 13f constitutes a tubular portion having a rectangular cross section. The surface plate portion 13c faces the front side in FIG. 13, and the outer side surface portion 13e faces the right side in FIG. Further, in the description of the storage column 130 and the clue rod 3, etc., mainly,
The description will be given using the right front position in FIG. 13, that is, the left front position in FIG.

Further, as shown in FIG. 3, the upper locking hole 13a is formed on the outer side surface portion 1 near the upper end of the storage column 130.
3e, and the lower locking hole 13b is formed in the outer side surface portion 13e at the lower position of the storage column 130. Further, the storage column 130 is formed with a through hole 13g for fixing the cap 5 described later with the blind rivet 8 on the outer side surface portion 13e and the inner side surface plate portion 13f in the vicinity of the upper end portion thereof.

As shown in FIGS. 8 and 9, the clue rod 3 is integrally formed of, for example, an extruded shape member made of aluminum, and has a quadrangular cross section. Further, as shown in FIG. 9, the clue rod 3 is formed with two convex stripes 3b extending parallel to the longitudinal direction on the outer surface of each side wall portion 3a located on the short side. These ridges 3
The b is designed to reduce the contact area with the opening 5a of the cap 5 described later to reduce the sliding resistance with the opening 5a. Also, at the lower end of the clue stick 3,
As shown in FIGS. 3 to 6, a bearing hole 3c is formed so as to penetrate each side wall portion 3a and rotatably fitted to a spring pin 42 described later.

As shown in FIGS. 8 and 10, the slider 4 is in contact with the inner surfaces of the front surface plate portion 13c, the rear surface plate portion 13d, the outer side surface portion 13e and the inner side surface portion 13f of the storage column 130. It has a rectangular cross-sectional shape that slides. However, the surface corresponding to the surface plate portion 13c is provided with ridges 4a on both left and right sides thereof.
It contacts the inner surface of the surface plate portion 13c via a. The slider 4 has bracket plates 4b provided upright on the left and right ends of the upper surface thereof. Each bracket plate 4b has a spring pin (support shaft) 42
6 so that the bearing hole 4c for fixedly holding
Is formed at the center in the width direction. That is, each bracket plate 4b rotatably supports the lower end portion (bearing hole 3c) of the clue rod 3 via the spring pin 42. Therefore, the axial center position of the spring pin 42 (axial center position of the bearing hole 4c) is the fulcrum position 41 for supporting the lower end portion of the clue rod 3.

Further, the slider 4 has a through hole 4 having a quadrangular cross section which penetrates downwardly between the bracket plates 4b.
d is formed. A guide hole 4e penetrating from the through hole 4d to the outside is formed in the wall portion of the slider 4 corresponding to each of the outer side surface portion 13e and the inner side surface plate portion 13f of the storage column 130. In addition, each guide hole 4e
The upper locking hole 13a and the lower locking hole 13 of the outer side surface portion 13e
It is formed of a circular hole having the same diameter as b. Moreover, in the one guide hole 4e located on the outer side surface portion 13e side, the position in the width direction of the outer side surface portion 13e also coincides with the positions of the upper side locking hole 13a and the lower side locking hole 13b. That is, as shown in FIGS. 3 and 4, when the slider 4 is moved in the axial direction along the inner surface of the storage column 130, one guide hole 4e is formed in the upper locking hole 13a or the lower locking hole 13b. Be sure to overlap. Further, the other guide hole 4e is similar to the one guide hole 4e described above when the slider 4 is inserted into the storage column 130 located on the right side in FIG. 14, and the upper guide hole 4a and the lower guide hole 4e. It always overlaps 13b. The slider 4 formed as described above is
It is integrally formed of resin such as S.

A stopper pin 61 is axially movably inserted into the one guide hole 4e. The stopper pin 61 is, as shown in FIGS. 3, 4, and 11, the columnar portion 6 slidably fitted in the guide hole 4e.
1a and a collar portion 6 formed at the base end of the column portion 61a
And 1b. The stopper pin 61 has a spherically rounded tip of the cylindrical portion 61a with the flange portion 61b in contact with the inner surface of the through hole 4d of the slider 4 so that the tip of the stopper pin 61 is located at the upper side engaging hole 13a of the outer side surface portion 13e. It penetrates through the lower locking hole 13b and is flush with the outer surface of the outer side surface portion 13e. Further, at the axial position of the stopper pin 61, as shown in FIG. 11, a hole 61c having a predetermined depth from the base end side is formed. That is, the stopper pin 61 is connected to the wire spring 62 via the hole 61c. Further, the stopper pin 61 formed as described above is integrally formed of, for example, stainless steel.

As shown in FIG. 11, the wire spring 62 is formed in a U shape or a V shape, and one end 6 of the wire spring 62 is formed.
2a is inserted into the hole 61c of the stopper pin 61. The wire spring 62 is shown in FIGS.
As shown in FIG. 4, the slider pin 4 is inserted into the through hole 4d of the slider 4 in a compressed state and biases the stopper pin 61 outward. Therefore, the wire spring 62 gives a force for inserting the stopper pin 61 into the upper locking hole 13a and the lower locking hole 13b, and maintains the inserted state. The wire spring 62 formed in this way is formed of spring steel using stainless steel.

As shown in FIGS. 3 to 7 and 12, the cap 5 is a cover portion 51 that covers the upper end surface of the storage column 130.
And a guide portion 52 inserted into the storage column 130. The guide portion 52 is formed in a U shape along the inner surfaces of the back plate portion 13d, the outer side surface portion 13e, and the inner side surface plate portion 13f of the storage column 130. And
The guide portion 52 includes an outer side surface portion 13e and an inner side surface plate portion 1
A through hole 5b for inserting the blind rivet 8 is formed at a position corresponding to the through hole 13g formed in 3f. The blind rivet 8 has the through hole 5b,
The cap 5 is fixed to the storage column 130 by being inserted into 13 g.

Further, the opening 5a of the cap 5 described above.
Are formed on the cover portion 51. This opening 5a
7, as shown in FIG. It is formed in a quadrangular shape in order to hold it movably. However, the axial center position 53 of the opening 5a is
The side surface 12 of the top plate 12 with respect to the fulcrum position 41 of the slider 4
It is eccentric in the direction away from b (see FIG. 13). This eccentric amount is shown as an eccentric dimension Y in FIG. 7. Further, in FIG. 12, 5c indicates a lightening portion. The cap 5 formed as described above is integrally formed of resin such as AES.

The leaf spring 7 is, as shown in FIGS. 4 and 6,
It is fixed to the surface plate portion 13c of the storage column 130 by the blind rivet 8. In this leaf spring 7, the slider 4 moves downward, and the stopper pin 61 moves downwardly.
The maximum amount of bending occurs when the slider 4 is engaged with the slider 4
It is designed to exert the force to push the lower surface of the. The leaf spring 7 thus formed is made of spring steel made of stainless steel.

The portable workbench 10 constructed as described above
In FIG. 1, for example, as shown in FIG. 1A and FIG. 2A, the clue rod 3 can be pulled out upward or housed in the housing column 130. When the clue rod 3 is pulled out upward from the storage column 130, the stopper pin 61 of the slider 4 engages with the upper locking hole 13a, so that the clue rod 3 is
Can be securely fixed to the storage column 130. When the clue rod 3 is pushed into the storage column 130, the entire clue rod 3 is stored in the storage column 130, and the stopper pin 61 is inserted into the lower locking hole 13b.
By engaging with the clue bar 3 in its stored state.
Can be securely fixed.

Therefore, when getting on and off the top plate 12 via the stepped crosspieces 11a on the side of the storage column 130 or when working on the top plate 12, the safety of the worker is improved by the clue bar 3 protruding upward. It is possible to secure the sex. On the other hand, when the clue rod 3 is stored in the storage column 130, the clue rod 3 is apparently absent, so that the clue rod 3 may interfere with the work or the portable work. If you fold up the table 10,
It has the advantage that the clue stick 3 is completely unobtrusive.

Further, since the lower end of the storage column 130 is inclined with respect to the upper end so as to extend toward the outside of the top plate 12, the storage column 130 allows the top plate 1 to move.
2 can be stably supported. However, when the clue stick 3 is projected from the storage column 130 as it is,
The clue bar 3 is projected at the same angle as the inclined line L1 of the storage column 130 shown in FIG. In such a case, since the upper end of the clue rod 3 is located inside the top plate 12, the work range on the top plate 12 is narrowed, or the top plate 12 is passed through the step bars 11a. The passage for getting on and off the train may become narrow.

However, as shown in FIGS. 5 to 7, the axial position 53 of the opening 5a of the cap 5 slidably supporting the clue rod 3 is the fulcrum of the slider 4 supporting the lower end of the clue rod 3. Since the cue bar 3 is provided at a position displaced from the position 41 to the outside of the top plate 12, as the cue bar 3 is projected upward from the storage column 130, the inclination of the cue bar 3 is such that its upper end is outside the top plate 12. Inclination line L located
2 (see FIG. 14).

That is, the axial center position of the opening 5a of the cap 5
Since 53 is displaced from the fulcrum position 41 of the slider 4 to the outside of the top plate 12, even in the state of being accommodated in the accommodation column 130 (the state where the stopper pin 61 is engaged with the lower locking hole 13b). As shown in FIG. 6, the clue rod 3 is tilted so that its upper end portion is located outside the top plate 12 with respect to the storage column 130. However, at the time of storage, the lower end of the clue rod 3 is located below the storage column 130, and the dimension between the axial center position 53 of the opening 5a in the cap 5 and the fulcrum position 41 of the slider 4 is long. Therefore, the inclination of the clue rod 3 is substantially equal to the inclination of the storage column 130.

That is, the dimension between the shaft center position 53 of the opening 5a of the cap 5 and the fulcrum position 41 of the slider 4 is the stored shaft size X1 (however, the shaft center position 53 is the position of the cover portion 51 in the opening 5a). The average center position in the thickness direction) and the axial center position 53 of the opening 5a deviates from the fulcrum position 41 of the slider 4 to the outside of the top plate 12 as the eccentric size Y.
And the storage column 13 for the clue rod 3 during storage
If the inclination with respect to 0 is the storage inclination angle θ1 (not shown), then tan θ1 = Y / X1. Therefore, the upper end of the clue rod 3 is stored at the storage support column 1 by the tilt angle θ1 when stored.
It is in a state of being inclined so as to be located outside the top plate 12 with respect to 30. However, since the storage axial dimension X1 is large, θ1 is substantially zero, and the inclination of the clue bar 3 is substantially equal to the inclination of the storage column 130. That is, the tilt line L1 of the storage column 130 passing through the axial center position 53 of the opening 5a and the tilt line L2 of the clue rod 3 passing through the coaxial center position 53 are substantially coincident with each other.

However, when the clue rod 3 is projected upward and the stopper pin 61 is engaged with the upper locking hole 13a, the lower end portion of the clue rod 3 becomes the storage column 130 as shown in FIG. Located above, that is, near the cap 5,
The dimension between the axial center position 53 of the opening 5a of the cap 5 and the fulcrum position 41 of the slider 4 becomes extremely short. Therefore, the clue rod 3 is largely inclined with respect to the storage column 130 such that the upper end portion thereof is located outside the top plate 12. That is, the opening 5 when the clue rod 3 is projected
If the dimension between the axial center position 53 of a and the fulcrum position 41 of the slider 4 is the projected axial dimension X2, and the inclination of the clue bar 3 at the time of protrusion is the projected inclination angle θ2, tan θ2 = Y
/ X2. Therefore, the clue bar 3 at the time of protrusion is inclined such that the upper end portion thereof is positioned outside the top plate 12 with respect to the axis of the storage column 130 by the inclination angle θ2 at the time of protrusion. Since the projection axial dimension X2 is small, even when the eccentric dimension Y is limited to the dimension between the inner surfaces of the storage columns 130 and can take a small value, it is possible to increase the projection inclination angle θ2. it can. That is, when the clue rod 3 is projected, the tilt line L2 of the clue rod 3 is the tilt line L1 of the storage column 130.
On the other hand, the inclination angle θ2 at the time of protrusion is large.

In order to make the above state easy to understand, when expressed by an equation, Y is constant and Y / X1 <Y / X2 from X1> X2 ... tan θ1 = Y / X1, tan θ2 = Y / X2 <Θ1 <π / 2, 0 <θ2 <π / 2 ... From the above, 0 <tan θ1 <tan θ2 ∴θ1 <θ2 As a result of the above, the clue bar 3 in the protruding state is projected as shown in FIG. The tilt angle θ2 is the tilt angle θ1 when stored.
The angle K formed by the cue stick 3 and the top plate 12 can be set to about 90 degrees by adjusting the degree of inclination of the cue bar 3 to a greater degree than the above. That is, the clue stick 3 can be projected substantially perpendicular to the ground. Therefore, it is possible to completely eliminate the problem that the work range on the top plate 12 is narrowed due to the protrusion of the clue rod 3.

Further, the stopper pin 61 has the upper locking hole 1
In the state of being engaged with 3a and the lower locking hole 13b, by pushing the tip end from the outside of the storage column 130 with, for example, a finger, the upper locking hole 13a and the lower locking hole 13b can be easily engaged. It can be canceled. In particular, in the state where the clue rod 3 is stored in the storage column 130,
Since the leaf spring 7 is in a compressed state, when the engagement state with the lower locking hole of the stopper pin 61 is released, the elastic force of the leaf spring 7 causes the clue rod 3 to move to the upper end of the storage column 130, that is, the cap. 5 is pushed upward by a predetermined amount. Therefore, even when the clue rod 3 is completely stored in the storage column 130, the upper end of the clue rod 3 can be picked up only by pushing the stopper pin 61 from the outside.

In the above embodiment, the case in which the clue rod 3 is stored in the storage column 130 over the entire length has been described, but the clue rod 3 may be partially exposed during storage.

[0045]

As described above, since the portable workbench of the present invention is constructed as described above, the following effects can be obtained.

(1) According to the first aspect of the present invention, the clue bar is projected upward from the storage column and held in a state of being inclined to the outside of the work plate with respect to the axis of the storage column. Since the bar projects upward from the work floor, the cue bar projecting upward can ensure the safety of the worker in getting on and off the work floor and working on the work floor. In addition, since the upper edge of the clue rod in the protruding state is greatly inclined so that the upper end of the clue rod is located outside the work floor with respect to the axis of the storage column, the work area on the work floor is narrowed by the protrusion of the clue rod. Can be prevented. Further, by storing the clue rod in the storage column, the clue rod can be made to be apparently excluded, which is effective in the case where the clue rod is rather an obstacle to the work.

Moreover (2), the housing posts are inclined so that its lower end extends toward the outside of the work floor with respect to the upper end, it is supported stably working floor by the housing posts it can. Also, even if the lower end of the storage column is inclined so that it extends toward the outside of the work floor with respect to the upper end, the clue rod in the protruding state has its upper end relative to the axis of the storage column. Therefore, it is possible to prevent the work range on the work floor from being narrowed due to the protrusion of the clue rod, since it is in a state of being greatly inclined so as to be located outside the work floor.

(3) According to the second aspect of the invention, in addition to the above (1) and (2), the convex body provided on the slider is further locked in the upper locking hole of the storage column. , The clue rod can be securely held in a state of protruding from the storage column, and the convex body is locked in the lower locking hole to securely hold the clue rod in the state of being stored in the storage column. can do.

(4) According to the invention as set forth in claim 3 , in addition to the above (3), in the state in which the clue rod is stored in the storage column, the locking state with respect to the lower locking hole of the convex body is set. When unraveled, the upper end of the clue rod will be pushed upward from the upper end of the storage column, that is, the cap, by a predetermined amount.
When the cue stick is projected upward, the cue stick can be easily pulled up by grasping the upper end portion of the cue stick which projects from the cap by a predetermined amount.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a main part of a portable workbench shown as an embodiment of the present invention, in which (a) is a cross-sectional view showing a state where a cue stick is projected from a storage column, and (b) is a sectional view. It is sectional drawing which shows the state which accommodated the clue stick in the storage pillar.

2A and 2B are cross-sectional views of a main part of the portable workbench, where FIG. 2A is a cross-sectional view taken along the line AA of FIG. 1A, and FIG.
It is sectional drawing which follows the BB line of (b).

FIG. 3 is a diagram showing a main part of the portable workbench, and FIG.
It is a principal part sectional drawing of (a).

FIG. 4 is a view showing a main part of the portable workbench, and FIG.
It is a principal part sectional drawing of (b).

FIG. 5 is a diagram showing a main part of the portable workbench, and FIG.
5 is a sectional view taken along line VV of FIG.

FIG. 6 is a diagram showing a main part of the portable workbench, and FIG.
FIG. 6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is a diagram showing a main part of the portable workbench, and FIG.
FIG. 7 is a VII arrow view of FIG.

FIG. 8 is a view showing a main part of the portable workbench, and FIG.
FIG. 8 is a sectional view taken along line VIII-VIII of FIG.

FIG. 9 is a view showing a main part of the portable workbench, which is a perspective view of a main part showing details of a clue bar.

FIG. 10 is a diagram showing a slider of the same portable work table, where (a) is a front view, (b) is a plan view, and (c) is (a).
FIG.

FIG. 11 is a view showing a main part of the portable workbench and is a front view showing a stopper pin and a wire spring.

FIG. 12 is a view showing a cap of the portable workbench, where (a) is a front view, (b) is a bottom view, and (c) is (a).
FIG.

FIG. 13 is a front view of the portable work table.

FIG. 14 is a view showing the portable workbench and is shown in FIG.
It is a XIV arrow line view.

FIG. 15 is a front view of a portable workbench shown as a conventional example.

FIG. 16 is a view showing a main part of the portable work table and is a front view showing a clue rod and the like.

FIG. 17 is a view showing a main part of the same portable work table, and is a front view showing the action of a clue rod or the like.

[Explanation of symbols]

3 Clue bar 4 Slider 5 Cap 5a Opening 7 Leaf spring (elastic means) 10 Portable worktable 12 Top plate (working floor) 13 Strut 13a Upper locking hole 13b Lower locking hole 41 Support point position 53 Shaft center position 61 Stopper pin (convex body) 130 Storage column

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04G 1/26 E04G 1/32 E06C 7/18

Claims (3)

(57) [Claims] 1. A portable workbench having a work floor supported by a plurality of columns and having a clue rod projecting upward from the work floor, wherein at least one of the columns can accommodate the clue rod. It is composed of a cylindrical storage strut, and the lower end of the storage strut is compared to the above-mentioned work with respect to the upper end.
Tilt it so that it spreads out toward the outside of the floor.
And, the clues rod projects upwardly from the housing posts, with respect to the axis of the housing posts, or is held in a state inclined to the outside of the work surface, or is held in a state of being housed in the housing posts It is possible to configure the inside of the storage column
The slider that can move in the axial direction and the upper end of the storage column
It is movably supported by the provided cap.
The slider is designed so that the lower end of the clue bar is a fulcrum.
It is designed to be supported at a position, and the cap supports the clue rod so that it can slide in the axial direction.
And the axial center position of the opening corresponds to the fulcrum position of the slider.
The portable workbench is characterized by being installed outside the work floor . 2. The portable workbench according to claim 1, wherein the storage column holds an upper locking hole for holding the clue rod in a state of protruding upward from the storage column, and the clue rod is stored in the storage column. And a lower locking hole for holding the slider in a closed state, and the slider has a convex body configured to be locked in the upper locking hole or the lower locking hole. And a portable workbench. 3. The portable workbench according to claim 1, wherein the storage column has an upper locking hole for holding the clue rod in a state of protruding upward from the storage column, and the clue rod is stored in the storage column. The slider has a convex locking member configured to be locked in the upper locking hole or the lower locking hole. The strut, when the convex body is locked in the lower locking hole, bends by a predetermined amount to store elastic force, and when the locked state with respect to the lower locking hole of the convex body is released, A portable workbench comprising elastic means configured to push the upper end of the clue rod upward from the cap by a predetermined amount by the elastic force.