JP3177597B2 - 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 work table which is used to work on a support table supported by a plurality of support legs, or is used by mounting an object thereon.

[0002]

2. Description of the Related Art A conventional work table is provided with a fixing mechanism for fixing the support legs so that the support legs do not close when the support legs are opened. The fixing mechanism includes a projection attached to the support base and urged by an urging member so as to always project toward the support leg, and an engagement hole formed on the support leg and engaged with the projection. ing.
Then, when fixing the support leg in an open state, first, the projection is pinched by a finger against the urging force to retreat to the support table side, and the support leg is rotated in the open state. further,
The projection is made to correspond to the engagement hole, the finger is released from the knob, the projection is returned to the original position by the urging force, and the projection is engaged with the engagement hole, so that the support leg is fixed to the support base in an open state. . At this time, since the projection is configured to protrude from the end face of the engagement hole by a predetermined length, the engagement between the projection and the engagement hole is released by the rotation of the support leg, and the support leg is closed. Can be prevented.

[0003]

However, in order to ensure that the projection is engaged with the engagement hole, the inner diameter of the engagement hole is formed larger than the outer diameter of the projection. Therefore, there is a problem that the support legs rattle with respect to the support table even when the support legs are fixed to the support table in a state where the support legs are opened by the conventional fixing mechanism.

[0004] The present invention has been made in view of such problems existing in the prior art. The aim is to provide a worktable that can be used in a stable state, at least when the support legs are fixed to the support base with the support legs open and can prevent rattling of the support legs. To provide.

[0005]

According to a first aspect of the present invention, there is provided a working table according to the first aspect, wherein a supporting table formed in a plate shape is supported by a plurality of supporting legs, and both ends of the supporting table. A second hinge plate attached to the upper end of the support leg is rotatably attached to a first hinge plate attached to the support leg by a support shaft, so that the support leg can be opened and closed. A first fixing mechanism for fixing the support legs to the support base when in an open state, and supporting the first hinge plate and the second hinge plate by engaging them in an engagement relationship; A second fixing mechanism for preventing rattling of the leg , wherein the second fixing mechanism
The outer peripheral edge of the second hinge plate about the support shaft.
An engagement recess formed along an arc of a circle
Engaging means provided on the first hinge plate to engage with
The engaging projection is a first hinge plate.
Is mounted and fixed on the support base.

According to a second aspect of the present invention, in the work table according to the first aspect, the first fixing mechanism is provided in a support table.
An operating pin arranged to be able to advance and retreat, and inserted into the operating pin,
Energize the operating pin so that it always projects from the side of the support
Biasing member, and a support leg formed on the second hinge plate.
When the through hole or support leg into which the operating pin is
Consisting of a long hole into which the operating pin is engaged in the closed state
Things.

According to a third aspect of the present invention, in the work table according to the first or second aspect, the outer peripheral surface of the engagement protrusion is provided.
A groove is formed at a position where the engaging concave portion engages .

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail. As shown in FIG. 8, the work table 10 includes a support table 11 formed in a plate shape, and support legs 33 attached to four corners thereof. Each of the support legs 33 can be opened and closed by the support shaft 40 via the first hinge plate 18 attached to the outside of both ends of the support 11 and the second hinge plate 25 attached to the outside of the upper end of the support leg 33. Mounted on

As shown in FIG. 5 or FIG. 8, an aluminum support base 11 constituting the work table 10 has a pair of opposed long side walls 12a and a pair of opposed short side walls 12b, and upper and lower surfaces thereof. The upper wall 13a and the lower wall 13b that are closed form a square plate. The plurality of circular slip stoppers 14 project from the upper surface of the upper wall 13a at predetermined intervals.

As shown in FIG. 4, first through holes 15 are formed at both ends of the pair of long side walls 12a so as to penetrate them, and a pair of first fixing holes 16 are formed from the respective first through holes 15. It is formed vertically at the center of the support base 11. The first mounting hole 17 is formed at the center between the first through hole 15 and each of the first fixing holes 16.

As shown in FIG. 2, the first hinge plate 1
Numeral 8 is formed in a substantially L-shape by a metal. First
The connection hole 19 is formed at the lower end on one end side of the first hinge plate 18, and the second through hole 20 is formed on the upper end on one end side. The pair of second fixing holes 21 are formed vertically at the other end of the first hinge plate 18, and the second mounting hole 22 is formed at the center between the second through hole 20 and the second fixing hole 21.

When the four first hinge plates 18 are mounted on the support base 11, first, a pair of second fixing holes 21, second mounting holes 22 and second through holes 20 of each first hinge plate 18 are provided. A pair of first fixing holes 16, first mounting holes 17, and first through holes 15 formed at four locations on the support base 11.
Respectively. Next, the first fixing hole 21
In the fixing hole 16, the second mounting hole 22 is connected to the first mounting hole 17.
Each of the four first hinge plates 18 can be attached to the support base 11 by inserting and riveting the rivet 23 into each of them.

At this time, as shown in FIG. 8, the head 24a of the rivet 24 inserted into the lower first and second fixing holes 16 and 21 is connected to the upper first and second fixing holes. An engagement projection 24 is formed by projecting a predetermined length from the head of the rivet 23 inserted into the holes 16 and 21.

As shown in FIG. 3, four second metal plates are used.
The hinge plate 25 is formed in a rectangular shape at one end thereof, and is formed into a substantially horizontal L-shape with a mounting portion 26 attached to the support leg 33 and a swinging portion 27 formed at the other end substantially in a fan shape. Is formed. The third fixing holes 28 are formed at four locations near each corner of the mounting portion 26, and the second connection holes 29 are formed substantially at the center of the second hinge plate 25.

The third through hole 30 is formed in an arc centered on the second connecting hole 29 in the upper part on the base end side of the swing part 27, and the long hole 31 is formed in the lower part on the tip side of the swing part 27. In this case, the second connection hole 29 is formed in an elliptical shape extending vertically in an arc centered on the second connection hole 29. The upper portion of the arc portion of the swinging portion 27 is formed along the circumference of a circle having a predetermined length as a radius around the second connection hole 29, and the lower portion is formed along the circumference of a smaller radius than the upper portion. ing. Therefore, when the second hinge plate 25 rotates along with the rotation of the support leg 33, the engagement protrusion 24 is prevented from contacting the outer peripheral edge of the second hinge plate 25, and the support leg 33 is smoothly moved. It can be rotated.

The engaging portion 32 is formed so as to protrude above an outer peripheral edge of the swinging portion 27, and an engaging recess 32a is formed in the swinging portion 27 side in an arc-shaped notch. When the support leg 33 is opened, the engagement recess 32a engages with the engagement projection 24 and constitutes a second fixing mechanism. At this time, the engagement portion 32 and the engagement recess 3
2a is a circle having a radius between the center of the second connection hole 29 and the center of the engagement projection 24, and the center of the second connection hole 29 and the engagement projection 2
4 from the tangent at the point of contact with the straight line passing through the center of 4
It protrudes to one side. Therefore, the engagement recess 32a is securely engaged with the engagement projection 24, so that the second fixing mechanism can be reliably operated.

As shown in FIG. 8, four support legs 33 constituting the work table 10 are supported by an aluminum column main body 34.
And an aluminum expansion / contraction column 35 slidably attached to the column main body 34. A non-slip member 36 made of synthetic rubber is attached to a lower end of each of the telescopic struts 35, and each of the telescopic struts 3 with respect to the ground 47.
5 is prevented from slipping. Lock mechanism 37
Is fixed to the lower end of each column body 34, and after the telescopic column 35 is positioned at a predetermined position with respect to the column body 34, the telescopic column 35 is fixed at that position.

As shown in FIG. 4, four fixing holes 38 are formed at four locations on the outer side of the upper end of each support leg 33 so as to correspond to the third fixing holes 28 of the second hinge plate 25. When attaching the four second hinge plates 25 to the support legs 33, first, when the support legs 33 are attached to the support base 11, the swinging part 27 side of the second hinge plate 25 is attached to the support base 11. Side of the third fixing hole 28
Correspond to the fourth fixing holes 38 of the support legs 33. And
By inserting a rivet 39 from each third fixing hole 28 into the corresponding fourth fixing hole 38 and caulking, the second hinge plate 25 can be attached to the outside of the upper end of the support leg 33.

Subsequently, when the four support legs 33 are mounted on the support base 11, first, the first connection holes 19 of the four first hinge plates 18 mounted on the support base 11 and the respective support legs 33 are connected. The second connection holes 29 of the attached second hinge plate 25 are made to correspond to each other, and the four support legs 33 are positioned at each corner of the support base 11. Then
The support shaft 40 is supported from the second connection hole 29 to the first connection hole 19. As a result, each support leg 33 can be supported rotatably around the support shaft 40. Also,
As shown in FIG. 8, the tread plate 41 is provided between the pair of support legs 33 at fixed intervals.

As shown in FIG. 5, a pair of stop plates 42 are provided on both sides of the support base 11 in the upper wall 13a and the lower wall 13b.
The support hole 43 is formed at the center of each of the stop plates 42. The metal operating pin 44 is formed in a lateral L-shape, and the distal end is supported by the first through hole 15 and the other end is supported by the support hole 43, and is supported inside the support base 11. The knob 45 is formed at a bent portion of the operation pin 44.

Coil spring 46 as urging member
Is fitted on the outer periphery of the operating pin 44, and one end of the coil spring 46 is joined to substantially the center of the operating pin 44 in a compressed state, and the other end is joined to the stop plate 42. As a result, the operating pin 44 is always urged toward each long side wall 12a,
As shown in FIG. 5A, the state where the tip of the operating pin 44 protrudes from the first through hole 15 is maintained. The operation pin 44, the coil spring 46, the stopper 42 and the like constitute a first fixing mechanism.

Then, as shown in FIG. 5B, the knob 45 of the operating pin 44 is gripped and the coil spring 4 is held.
When the operating pin 44 is pulled inward against the urging force of 6,
The urging force of the coil spring 46 is received by the restraining plate 42, and the tip of the operating pin 44 can be retracted from the first through hole 15. When the support leg 33 is closed, the distal end of the operating pin 44 is connected to the first through hole 15, the second through hole 20, and the second hinge plate 25.
The first through-hole 1 when fitted in the long hole 31 and opened.
5. The second through hole 20 and the third through hole 30 are fitted and maintained in their respective states.

Next, the operation of the worktable 10 will be described. When the support leg 33 in the closed state is to be opened, first, as shown in FIG.
5 is grasped with a finger, the tip of the operating pin 44 is pulled inward against the urging force of the coil spring 46, and the first hole 15, the second hole 20, and the long hole 31 of the second hinge plate 25 are held. Release the mating. Next, as shown in FIG. 6, the support leg 33 is rotated outward about the support shaft 40.
Further, the third through hole 30 of the second hinge plate 25 is
It corresponds to the through hole 20. Then, when the finger is released from the knob 45 of the operating pin 44, the operating pin 44 returns to the long side wall 12a by the urging force of the coil spring 46 as shown in FIG. The first through hole 15, the second through hole 20, and the third through hole 30 are fitted. By performing this operation on each pair of support legs 33 on both sides, each support leg 33 can be opened, and the state can be fixed and maintained by the first fixing mechanism.

Then, as shown in FIG. 8, on the grounds 47 having different heights, the telescopic struts 35 are slid to predetermined positions so that the heights thereof correspond to each other.
7 fixes the position. Then, the worktable 10 can be stably placed on the grounds 47 having different heights.

At this time, the engaging recess 32a is
To a more stable state. Therefore, for example, when a person stands on the support base 11, the support legs 33 further spread outward. As a result, the support legs 3 are moved by the second fixing mechanism.
3 can be prevented from rattling against the support base 11.

When the support leg 33 in the open state is closed, first, as shown in FIG. 5B, the knob 45 of the operating pin 44 is gripped by a finger to resist the urging force of the coil spring 46. Then, the distal end of the operating pin 44 is retracted inward, and the engagement with the first through hole 15, the second through hole 20, and the third through hole 30 is released. Next, as shown in FIG. 6, the support leg 33 is rotated inward about the support shaft 40, and the long hole 31 is made to correspond to the second through hole 20. Then, when the finger is released from the knob 45 of the operating pin 44, the finger is released as shown in FIG.
As shown in FIG. 8, the operating pin 44 advances in the direction of the long side wall 12a by the urging force of the coil spring 46, so that the distal end of the operating pin 44 has the first through hole 15, the second through hole 20, and the long hole 3
1 is fitted. This work is carried out on each pair of support legs 33 on both sides.
7, the support legs 33 can be closed, as shown in FIG.
The state can be fixedly maintained by the fixing mechanism.

The swing part 2 of the second hinge plate 25
The upper portion of the circular arc portion 7 is formed along the circumference of a circle having a predetermined length as a radius around the second connection hole 29, and the lower portion is formed along the circumference with a smaller radius than the upper portion. Therefore, the second hinge plate 2 accompanying the rotation of the support leg 33
5, the engagement projection 24 is moved to the second hinge plate 25.
Each of the support legs 33 can be smoothly rotated by preventing contact with the outer peripheral edge of the support leg.

As described above, according to this embodiment, the following effects are exhibited. According to the worktable 10 of the embodiment, when the support leg 33 is opened, the engagement recess 32a formed on the second hinge plate 25 and the engagement protrusion 24 provided on the first hinge plate 18 are engaged. Together, the second fixing mechanism constitutes a more stable state. Further, for example, when a person
When the support leg 33 further spreads outward on the first support leg 1, the support leg 33 is more securely fixed to the support base 11 by the second fixing mechanism, and the support leg 33 rattles against the support base 11. The work table 10 can be used in a stable state.

According to the working table 10 of the embodiment, the upper part of the arc portion of the swinging portion 27 of the second hinge plate 25 has a circumference of a circle having a predetermined length as a radius centered on the second connection hole 29. And the lower part is formed along a circumference with a smaller radius than the upper part. Therefore, when the second hinge plate 25 rotates with the rotation of the support leg 33, the engagement protrusion 24
Can be prevented from contacting the outer peripheral edge of the second hinge plate 25 and the support leg 33 can be smoothly rotated.

According to the working table 10 of the embodiment, the engaging projection 24 constitutes the second fixing mechanism and is used for attaching the first hinge plate 18 to the supporting table 11. Further, the engaging portion 32 and the engaging concave portion 32a are formed integrally with the second hinge plate 25. Therefore, a plurality of functions can be exhibited by a small number of members, and the number of members can be reduced to reduce the manufacturing cost.

According to the worktable 10 of the embodiment, in the event that the first fixing mechanism does not work, the engagement of the engaging projections 24 with the engaging recesses 32a constituting the second fixing mechanism causes The open state of the support leg 33 can be fixedly maintained.

According to the working table 10 of the embodiment, the elongated holes 31 are formed in the second hinge plate 25 and the support legs 33
Is closed, the operating pin 44 fits into the long hole 31 through the first and second through holes 15 and 20. Therefore, the state where the support leg 33 is closed by the first fixing mechanism can be fixed and maintained. As a result, the support legs 33
Can be prevented from opening, and the workbench 10 can be transported in a stable state.

According to the working table 10 of the embodiment, when the engaging recess 32a engages with the engaging protrusion 24, the engaging portion 32 and the engaging recess 32a are in contact with the center of the support shaft 40. Circle with a radius between the centers of the support shaft 40 and the engagement protrusion 2
4 from the tangent at the point of contact with the straight line passing through the center of 4
It protrudes to one side. Therefore, the second hinge plate 2
5 is rotated downward, the engagement recess 32a is
4 can be securely engaged, and the second fixing mechanism can be reliably operated.

It is to be noted that the above embodiment can be modified and embodied as follows. Attaching the second hinge plate 25 to the inside of the upper end of the support leg 33; With such a configuration, the same effect as that of the embodiment can be obtained.

The first and second fixing mechanisms are provided on the workbench 10 having no telescopic mechanism, omitting the telescopic strut 35 and the lock mechanism 37 attached to the support legs 33 of the worktable 10. Also in the case of such a configuration, the same effect as the embodiment can be exerted.

The second hinge plate 25 is connected to each support leg 33.
To be joined by welding. With this configuration,
Third fixing hole 28 of second hinge plate 25 and support leg 33
The step of forming the fourth fixing hole 38 can be omitted, and the rivet 39 can be omitted. As a result, the manufacturing process of the second hinge plate 25 and the support legs 33 can be simplified, and the manufacturing cost can be reduced.

[0037]

The first hinge plate 18 is joined to the support base 11 by welding. At this time, the second through hole 20 and the lower second fixing hole 21 are formed in the first hinge plate 18.

With such a configuration, the first hinge plate 18 can be easily and firmly fixed to the support base 11. The urging member 46 is changed using a leaf spring or rubber according to the strength of the fitting between the operating pin 44 and the third through hole 30 and the long hole 31.

The thickness of the engagement projection 24 and the engagement recess 32a
Is changed in accordance with the weight of the object placed on the work table 10. Further, a technical idea grasped from the embodiment will be described below.

[0041]

[0042]

[0043]

[0044] formed in-second hinge plate, elongated hole, which operating pin when the actuating pin is closed holes and support legs which are engaged in a state where the support legs closed is engaged, the support shaft The work table according to claim 1, wherein the work table is formed on an arc centered on the center.

With this configuration, when the support leg is rotated about the support shaft, the operating pin can be fitted into the through hole or the long hole, so that the first fixing mechanism can be reliably performed. . When the support leg is open, the engagement recess is a contact point between a circle having a radius between the center of the support shaft and the center of the engagement protrusion, and a straight line passing through the center of the support shaft and the center of the engagement protrusion. 3. The work table according to claim 2, wherein the work table protrudes toward the support table side from a tangent line at.

With this configuration, when the second hinge plate pivots downward with the opening of the support leg, the engagement recess is securely engaged with the engagement projection, and the second fixing mechanism is securely engaged. Can be acted upon.

[0047]

The present invention is configured as described above, and has the following effects. According to the work table of the first aspect of the present invention, when the support legs are fixed to the support table with at least the support legs opened, it is possible to prevent the support legs from rattling with the support table and to use the work table in a stable state can do. Also, when the support leg is rotated, the engagement protrusion is turned into the second hinge.
To prevent contact with the outer edge of the
The legs can be rotated. In addition, rotate the support legs
When this is done, it is assumed that the engagement projection constitutes a second fixing mechanism.
Also used to attach the first hinge plate to the support.
Have been used. Therefore, a small number of members can
And reduce the number of parts
As a result, the manufacturing cost can be reduced.

According to the work table of the invention described in claim 2,
With the support leg closed, the tip of the operating pin
With the support legs open,
Are fitted in the through holes. At this time, the operating pin is
Is always urged outward from the support base.
Therefore, each state can be reliably maintained.

According to the work table of the invention described in claim 3 ,
In addition to the effects of the invention according to 請 Motomeko 1 or claim 2, the engagement
When the recess engages with the engagement protrusion, the engagement relationship is firm.
Can be used to reduce the rattling of the support legs in the lateral direction.
Can be prevented.

[Brief description of the drawings]

FIG. 1 is a partially enlarged view showing a state in which an engagement recess is engaged with an engagement protrusion.

FIG. 2 is a plan view showing a first hinge plate.

FIG. 3 is a plan view showing a second hinge plate.

FIG. 4 is a partially enlarged view showing a support base and a support leg before a hinge plate is attached.

5A is a side sectional view showing a state in which an operating pin is projected, and FIG. 5B is a side sectional view showing a state in which the operating pin is retracted.

FIG. 6 is a partial side view showing a state where a support leg is rotated.

FIG. 7 is a side view showing a state where a support leg of the worktable is closed.

FIG. 8 is an exemplary perspective view showing a work table according to the embodiment;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Work table, 11 ... Support table, 18 ... First hinge plate, 24 ... Engagement projection which comprises a 2nd fixing mechanism, 25 ...
2nd hinge plate, 30... 3rd through hole constituting the first fixing mechanism, 31.
a ... engaging concave part constituting the second fixing mechanism; 33 ... support leg; 40 ... support shaft; 44 ... operating pin constituting the first fixing mechanism; 46 ... biasing member constituting the first fixing mechanism As a coil spring.

Claims (3)

(57) [Claims] 1. A plate-shaped support base is supported by a plurality of support legs, and a second hinge plate mounted on an upper end of the support leg is mounted on a first hinge plate mounted on both ends of the support base. A worktable configured to be rotatably mounted on a support shaft and capable of opening and closing a support leg, comprising a first fixing mechanism for fixing the support leg to the support base at least when the support leg is open. And a second fixing mechanism that is engaged between the first hinge plate and the second hinge plate in an engagement relationship to prevent rattling of the support leg, and the second fixing mechanism is provided .
The outer peripheral edge of the second hinge plate about the support shaft.
An engagement recess formed along an arc of a circle
Engaging means provided on the first hinge plate to engage with
The engaging projection is a first hinge plate.
A work table that attaches and fixes the to the support table . 2. The apparatus according to claim 1, wherein said first fixing mechanism moves back and forth within the support table.
Actuating pins that are arranged as possible
The pin is urged to always protrude from the side of the support base.
A biasing member and a second hinge plate, wherein the support legs are closed.
The through hole or support leg into which the operating pin is engaged
Consisting of an elongated hole into which the operating pin is engaged in the extended state
The workbench according to claim 1, wherein: 3. The engagement recess on the outer peripheral surface of the engagement projection
3. A groove according to claim 1 or 2, wherein a groove is formed at an engaging position.
Work bench.