JP2021055299A - Support device for hand hold bar in workbench - Google Patents

Abstract

To provide a support device for supporting a hand hold bar in a workbench so as to freely change the posture between a standing posture and a storage posture and holding it in each posture.SOLUTION: A support device for a hand hold bar in a workbench comprises : a support fitting equipped with an upper support plate part and a lower support plate part for receiving a hand hold bar in a standing posture and a storing posture; a standing holding mechanism which is provided with an operation cylinder body slidably externally fitted the hand hold bar, for inserting and locking a first lock pin projecting from the surface of the hand hold bar into a first through hole of the upper support plate part and a first locking hole of a holding cylinder part, when the upper support plate part of the support fitting is held by the holding cylinder part while sliding an operation cylinder part in the standing posture; and a storage holding mechanism that locks a second lock pin projecting from the surface of the hand hold bar by inserting the second lock pin into a second through hole of the lower support plate part and the second locking hole of the holding cylinder part, when the lower support plate part of the support fitting is held by the holding cylinder part while sliding an operation cylinder part in the storing posture.SELECTED DRAWING: Figure 2

Description

The present invention relates to a support device for holding a clue rod in an upright posture and a retracted posture on a workbench provided with a clue rod.

Conventionally, the workbench is provided with a clue rod that is located near the corner of the top plate and stands up toward the upper side of the top plate, and is provided for the safety of workers who work at heights.

JP-A-2018-188000 Japanese Unexamined Patent Publication No. 2013-2205

The clue rod is pivotally attached to the side of the upper end of the column base provided near the corner of the top plate of the workbench, and when the workbench is used, it stands upright toward the top of the top plate. When not in use, it is in a retracted position suspended downward.

The clue rod that is in the upright position during use must be held so that it will not fall even if the operator puts his hand on it.

On the other hand, the workbench when not in use is folded by rotating the leg body to the lower side of the top plate, so that the clue rod in the retracted posture when not in use is rotated integrally with the leg body. It is preferably retained.

For this reason, conventionally, a support device for holding the clue rod in the standing posture and the retracted posture has been provided.

However, the conventional support device has a large number of parts and a complicated structure, and it is not easy to carry out at low cost. Moreover, in order to rotate the clue rod and hold it in the standing posture or the retracted posture, it is necessary. There is a problem that the fasteners and the like must be operated by a predetermined method and cannot be held quickly and easily with one touch.

Furthermore, when a moment in the rotation direction is applied, such as when the operator pulls the tip of the clue rod held in the standing posture, the base end of the clue rod is broken or the pivot of the pivot is deformed. There is a risk of doing so.

The present invention provides a support device for a clue rod in a work table that solves the above problems, and where the first invention is configured as a means, a column base is provided near a corner of a rectangular top plate. The base end of the clue rod is rotatably pivotally attached to the side of the upper end of the column base, and the clue rod is erected upward of the top plate and is suspended downward. It is a support device that holds the clue rods in the standing posture and the retracted posture on the work table where the posture can be freely changed between the postures, and the upper support plate portion that receives the clue rods in the standing posture and the retracted posture. A support metal fitting provided with a lower support plate portion for receiving the clue rod, a sliding cylinder portion slidably externally attached to the clue rod, and a sliding cylinder portion toward the base end portion of the clue rod. It is composed of an operation cylinder having a holding cylinder that has an opening and an expanded inner peripheral space, and has a first wall portion and a lower support plate that face the upper support plate portion in the rotation direction of the clue rod. Of the second wall portion facing the portion, at least the lock pin that advances and retreats freely from the surface of the first wall portion and protrudes, and is urged in the protruding direction by a spring, and the lock pin are inserted and locked. The locking hole formed in the holding cylinder portion constitutes a lock means that can be engaged and disengaged to lock the operation cylinder in a non-slip manner, and receives the first wall portion when the clue rod is in the upright position. By inserting the lock pin into the through hole formed in the upper support plate portion and inserting and locking the lock pin into the locking hole while the upper support plate portion is held by the holding cylinder portion. An standing holding mechanism for holding the standing posture is configured, and when the clue rod is in the retracted posture, the lower support plate portion receives the second wall portion, and the holding cylinder portion holds the lower support plate portion. The point is that a storage holding mechanism for holding the storage posture is configured by inserting and locking the lock pin into the locking hole.

Further, where the second invention is configured as a means, a column base is provided near the corner of the rectangular top plate, and the base end portion of the clue rod is rotatably pivoted on the side portion of the upper end portion of the column base. In a workbench where the posture can be freely changed between the standing posture in which the clue rod is put on and standing upward of the top plate and the retracting posture in which the clue rod is suspended downward, the clue rod is placed in the standing posture and the retracting posture. A support metal fitting having an upper support plate portion for receiving a clue rod in an upright position and a lower support plate portion for receiving a clue rod in a retracted posture, and a support device for holding the clue rod. An operation cylinder having a sliding cylinder portion that is movably externally inserted and a holding cylinder portion that opens from the sliding cylinder portion toward the base end portion of the clue rod and has an enlarged inner peripheral space. When the operation cylinder is slid with the clue rod in the upright position and the upper support plate portion of the support metal fitting is held by the holding cylinder portion, the clue rod is freely advanced and retracted from the surface and protrudes. With the upright holding mechanism composed of 1 lock pin, the 1st through hole of the upper support plate portion through which the 1st lock pin is inserted, and the 1st locking hole of the holding cylinder portion, and the clue rod in the retracted posture. When the operation cylinder is slid and the lower support plate of the support bracket is held by the holding cylinder, the second lock pin that advances and protrudes freely from the surface of the clue rod and the second lock pin are inserted. It is a point including a storage holding mechanism composed of a second through hole of the lower support plate portion and a second locking hole of the holding cylinder portion.

In the embodiment of the present invention, regarding the rotation direction of the clue rod, the first lock pin is provided on the first wall portion of the peripheral wall of the clue rod facing the upper support plate portion, and the first lock pin is provided on the upper support plate portion. A hole is formed, a second lock pin is provided on the second wall portion facing the lower support plate portion, and a second through hole is formed on the lower support plate portion, and the first lock pin and the second lock pin are formed. , It is fixed to both ends of a substantially U-shaped leaf spring mounted inside the clue rod, and is projected from the wall surface through insertion holes formed in the first wall portion and the second wall portion, respectively.

In a preferred embodiment, the outer peripheral surface of the clue rod and the inner peripheral surface of at least the sliding cylinder portion of the operation cylinder are formed in a square cross section so as not to rotate in the circumferential direction. A guide surface for retracting the first lock pin and the second lock pin from the protruding state is formed between the opening of the holding cylinder portion that comes into contact with each other by sliding and the first lock pin and the second lock pin. ing.

According to the present invention, the support device 6 has a relatively small number of parts and a simple structure, so that it is easy to implement, and when the clue rod 5 is rotated toward the standing posture P1. Is received by the upper support plate portion 9A, and when it rotates toward the retracted posture P2, it is received by the lower support plate portion 9B. There is an effect that the posture of the clue rod 5 can be easily and easily maintained with one touch simply by sliding.

Moreover, since the operation cylinder 16 reinforces the vicinity of the base end portion 5a of the clue rod 5 and the support metal fitting 9 by holding the support metal fitting 9 in a surrounding state, the clue rod is maintained in a posture. Even when the tip portion of 5 receives a moment in the rotational direction, there is an advantage that the base end portion 5a and the pivot 7 can be prevented from being broken.

An embodiment of the present invention is shown, (A) is a perspective view showing the entire workbench, and (B) is a perspective view showing a state in which a clue rod in an upright posture is held by a support device. .. It is a perspective view which shows the support device in the disassembled state. A cross section of the support device is shown, (A) is a cross-sectional view showing a state in which the clue rod is in an upright posture, and (B) is a cross-sectional view showing a state in which the clue rod is in a retracted posture. It is sectional drawing which shows the structure of the support device in an enlarged manner. Regarding the action, (A) is a cross-sectional view in a state where the clue rod is held by the standing holding mechanism, (B) is a cross-sectional view in a state where the holding is released, and (C) is a rotation of the clue rod whose holding is released. It is sectional drawing of the state. Regarding the action, (A) is a cross-sectional view of the state in which the clue rod is rotated toward the retracted posture, (B) is a cross-sectional view of the state of being received by the lower support plate portion, and (C) is a clue by the storage holding mechanism. It is sectional drawing in the state of holding a rod.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

(Overall composition)
The workbench is a general-purpose workbench that includes various types of workbenches used for work at heights at construction sites and the like. Therefore, the shape and size of the workbench are not particularly limited, but FIG. As shown in the above, the workbench 1 is provided with a substantially rectangular top plate 2 having a long side on the gable side and a short side on the gable side, and each has a leg body 3 on the gable side. Although details are not shown, each leg 3 is configured in the shape of a ladder in which steps are erected on a pair of column bases 4 and 4, and extension legs are provided on each column base 4 so as to be expandable and contractible. With the extension legs contracted, both legs 3 and 3 are configured to be retractable by rotating them toward the lower side of the top plate 2.

A total of four clue rods 5 are provided near the corners of the top plate 2 and stand up toward the top of the top plate 2, and each of the clue rods 5 has a base end portion 5a at the lower end as a pillar. It is attached to the outer surface of the leg 4 via a support device 6, and the base end portion 5a is rotatably pivotally attached via the pivot shaft 7.

Therefore, each of the clue rods 5 is rotated as shown by a chain line in FIG. 1 (A), so that the standing posture P1 stands up toward the upper side of the top plate and the storage posture P2 is suspended downward. The posture can be freely changed between the two, and the support device 6 holds each of the standing posture P1 and the retracted posture P2.

The support device 6 is attached to the side portion of the pivot fitting 8 that allows the leg body 3 to rotate toward the lower side of the top plate 1, and follows the side portion of the column base 4 when the retracted posture P2 is set. It is preferable that the legs are held in a pressed state and folded toward the lower side of the top plate 1 in a state of being integrated with the leg body 3.

As shown in FIGS. 2 to 4, the support device 6 has an upper support plate portion 9A for receiving the clue rod 5 in the standing posture P1 and a lower support plate portion for receiving the clue rod 5 in the retracted posture P2. The support metal fitting 9 provided with 9B is provided, and as shown in FIG. 2, the mounting metal fitting 11 fixed to the side portion of the support metal fitting 9 is provided with respect to the fixing metal fitting 10 fixed to the pivot fitting 8. It is attached and fixed via. As a result, the support metal fitting 9 is fixedly connected to the pivot metal fitting 8.

In the case of the illustrated embodiment, the support metal fitting 9 is formed in a U-shaped cross section in which the side plate portions 9a and 9b are bent on both sides of the upper support plate portion 9A and the lower support plate portion 9B, and is formed between the side plate portions 9a and 9b. The clue rod 5 is rotatably pivotally attached by inserting the clue rod 5 and inserting the pivot 7 through the side plate portions 9a and 9b and the base end portion 5a of the clue rod 5.

The clue rod 5 is formed to have a square cross section, or a rectangular cross section in the case of the drawing, and when rotated, the clue rod 5 faces the first wall portion 5A that faces the upper support plate portion 9A and faces the lower support plate portion 9B. It is provided with a second wall portion 5B in contact with the first wall portion 5A, and is provided in the first lock pin 13A and the second wall portion 5B which advance and retreat freely from the first insertion hole 12A opened in the first wall portion 5A. A second lock pin 13B is provided which advances and projects freely from the second insertion hole 12B.

The first lock pin 13A and the second lock pin 13B are fixed to both ends of a substantially U-shaped leaf spring 14 mounted inside the clue rod 5 between the first wall portion 5A and the second wall portion 5B. , The insertion holes 12A and 12B are inserted and protrude from the wall surface, respectively.

On the other hand, the support metal fitting 9 receives the first lock pin 13A and inserts the first lock pin 13A into the upper support plate portion 9A with which the first wall portion 5A abuts when the clue rod 5 is in the standing posture P1. 15A is provided, and a second through hole 15B for accepting and inserting the second lock pin 13B is provided in the lower support plate portion 9B with which the second wall portion 5B abuts when the clue rod 5 is in the retracted posture P2.

An operation cylinder 16 is extrapolated to the clue rod 5, and the operation cylinder 16 is extrapolated from the sliding cylinder portion 16a and the sliding cylinder portion 16a slidably inserted into the clue rod 5. A holding cylinder portion 16b having an inner peripheral space 17 that is opened toward the base end portion 5a of the clue rod and has an enlarged diameter is provided. As shown in the drawing, at least the inner peripheral surface of the sliding cylinder portion 16a in the operation cylinder 16 is formed into a rectangular cross section in which the outer peripheral surface having a rectangular cross section of the clue rod 5 is fitted therein. The tubular body 16 is slidable in the axial direction of the clue rod 5 in a state where it cannot rotate in the circumferential direction.

When the operation cylinder 16 slides toward the base end portion 5a with the clue rod 5 in the upright posture P1, the inner peripheral space 17 of the holding cylinder portion 16b causes the operation cylinder 16 to meet with the upper support plate portion 9A of the support metal fitting 9. It is configured to hold the plate portions 9a and 9b on both sides, and at this time, the first locking hole 18A that receives and locks the first lock pin 13A inserted from the first through hole 15A is the holding cylinder portion. It is formed at 16b.

Similarly, when the operation cylinder 16 is slid toward the base end portion 5a with the clue rod 5 in the retracted posture P2, the lower support plate portion of the support metal fitting 9 is provided by the inner peripheral space 17 of the holding cylinder portion 16b. It is configured to hold the 9B and the plate portions 9a and 9b on both sides, and at this time, the second locking hole 18B that receives and locks the second lock pin 13B inserted from the second through hole 15B is held. It is formed on the tubular portion 16b.

In order to be able to lock the first lock pin 13A and the second lock pin 13B, the first locking hole 18A and the second locking hole 18B, respectively, by simply sliding the operation cylinder 16. As shown in 4, between the opening of the inner peripheral space 17 in the holding cylinder portion 16b that comes into contact with each other during sliding and the first and second lock pins 13A and 13B, the guide surfaces 17a, which are mutually tapered surfaces, 13a is formed. Therefore, when the operation cylinder 16 is slid toward the base end portion 5a of the clue rod 5, the lock pins 13A and 13B are retracted from the protruding state against the leaf spring 14 by the guide surfaces 17a and 13a, and then the plate. It is advanced by the spring 14 and locked in the locking holes 18A and 18B.

The lock pins 13A and 13B inserted and locked in the locking holes 18A and 18B are released by being pushed by the user with a fingertip. As shown in FIG. 4, the locking holes 18A and 18B are formed with a tapered diameter-expanded portion 18a toward the surface of the holding cylinder portion 16b in order to facilitate insertion of the fingertip.

With the above configuration, as shown in FIG. 3A, when the operation cylinder 16 is slid with the clue rod 5 in the upright posture P1, the support cylinder portion 16b causes the support metal fitting 9 to slide. While holding the upper support plate portion 9A and both side plate portions 9a and 9b, the first lock pin 13A protruding from the first through hole 15A is attached to the first through hole 15A of the upper support plate portion 9A and the holding cylinder portion 16b. 1 It is made to penetrate through the locking hole 18A, whereby the standing holding mechanism 19A is configured.

Further, as shown in FIG. 3B, when the operation cylinder 16 is slid in the state where the clue rod 5 is in the retracted posture P2, the support device 6 is subjected to the lower support plate of the support metal fitting 9 by the holding cylinder portion 16b. While holding the portions 9B and the plate portions 9a and 9b on both sides, the second lock pin 13B protruding from the second through hole 15B is locked to the second through hole 15B of the lower support plate portion 9B and the holding cylinder portion 16b. It is penetrated through the hole 18B, whereby the storage holding mechanism 19B is configured.

(Action)
5 and 6 show the action from the state where the clue rod 5 is held as the standing posture P1 to the holding after changing the posture to the retracted posture P2. On the contrary, a method of changing the posture from the stored posture P2 to the standing posture P1 and holding the posture is not shown, but the following explanation is self-evident, so the description is omitted. To do.

FIG. 5A shows a state in which the clue rod 5 is in the standing posture P1, and the clue rod 5 is held by the above-mentioned standing holding mechanism 19A. In this state, as shown in FIG. 5B, the first lock pin 13A is pushed into the holding cylinder portion 16b to be separated from the first locking hole 18A, and the operation cylinder 16 is moved to the base end of the clue rod 5. When it is slid in the backward direction away from the portion 5a, the holding by the standing holding mechanism 19A is released. It is preferable to provide a stopper 20 as shown by a chain line at a predetermined position of the clue rod 5 to regulate the sliding range of the operation cylinder 16, and further, although not shown, the operation cylinder is at this retracted position. It is preferable to provide a holding means for holding the body 16 in a stationary manner. As a result, the clue rod 5 is in a freely rotatable state as shown in FIG. 5 (C).

As shown in FIG. 6 (A), when the clue rod 5 is rotated until it approaches the retracted posture P2, the second lock pin 13B faces the second through hole 15B of the lower support plate portion 9B, and when it is further rotated, the second lock pin 13B faces the second through hole 15B. As shown in FIG. 6B, the second lock pin 13B is inserted into the second through hole 15B, and the second wall portion 5B of the clue rod 5 is received by the lower support plate portion 9B to stop the rotation. To do. Therefore, as shown in FIG. 6C, if the operation cylinder 16 is slid toward the base end portion 5a of the clue rod 5, the second lock pin 13B automatically becomes the second lock pin 13B as described above. It is inserted and locked in the locking hole 18B, and the clue rod 5 is held in the retracted posture P2.

(Another embodiment)
In the above illustrated embodiment, the storage holding mechanism 19B slides the operation cylinder 16 in a state where the clue rod 5 is in the storage posture P2, and the holding cylinder portion 16b holds the lower support plate portion 9B of the support metal fitting 9. Then, the second lock pin 13B protruding from the surface of the first wall portion 5B of the clue rod 2 is inserted into the second through hole 15B of the lower support plate portion 9B and the second locking hole 18B of the holding cylinder portion 16b. However, the present invention is not limited to such a configuration, and the second lock pin 13B, the second through hole 15B of the lower support plate portion 9B, and the holding cylinder portion 16b. It can be carried out without providing the second locking hole 18B.

That is, in another embodiment of the present invention, although not shown, the lock pin 13A described as the first lock pin in the above illustrated embodiment and the first through hole of the upper support plate portion 9A have been described. A through hole 15A and a locking hole 18A described as the first locking hole of the holding cylinder portion 16b are provided so that both the standing holding mechanism 19A and the storage holding mechanism 19B can be used in combination only with such a configuration. It is configured.

In this case, the upright holding mechanism 19A has the lock pin 13A in the through hole 15A of the upper support plate portion 9A for receiving the first wall portion 5A when the clue rod 5 is in the upright posture P1 as in the above-described embodiment. The lock pin 13A is inserted and locked in the locking hole 18A in a state where the upper support plate portion 9A is held by the holding cylinder portion 16b, and the operation cylinder 16 is locked so as not to be slidable. It is composed.

As a result, the locked state of the lock pin 13A can be visually recognized from the elevating side of the workbench 1, that is, when the operator appears on the top plate 2 from the leg body 3, the locked state can be easily visually recognized, and the standing posture P1 It is possible to visually confirm whether or not the clue rod 5 is locked and in a safe state.

On the other hand, in the storage holding mechanism 19B, the clue rod 5 is set as the storage posture P2, the second wall portion 5B is received by the lower support plate portion 9B, and the lower support plate portion 9B is held by the holding cylinder portion 16b. Therefore, the lock pin 13A is inserted and locked in the locking hole 18A to form a locking means for locking the operation cylinder 16 so as not to be slidable. As described above, the storage holding mechanism 19B may be any one that prevents the clue rod 5 from sliding so that the operation cylinder 16 holding the lower support plate portion 9B does not release the holding state. The second lock pin 13B, the second through hole 15B of the lower support plate portion 9B, and the second locking hole 18B of the holding cylinder portion 16b as in the above-described embodiment are not required.

P1 Standing posture P2 Storage posture 1 Workbench 2 Top plate 3 Leg body 4 Pillar base 5 Clue rod 5a Base end 5A 1st wall 5B 2nd wall 6 Support device 7 Pivot 8 Pivot fitting 9 Support bracket 9A Upper support Plate 9B Lower support plate 9a, 9b Side plate 10 Fixing bracket 11 Mounting bracket 12A 1st insertion hole 12B 2nd insertion hole 13A 1st lock pin 13B 2nd lock pin 13a Guide surface 14 Leaf spring 15A 1st through hole 15B 2nd through hole 16 Operation cylinder 16a Sliding cylinder 16b Holding cylinder 17 Inner peripheral space 17a Guide surface 18A 1st locking hole 18B 2nd locking hole 18a Expanded diameter 19A Standing holding mechanism 19B Storage holding mechanism 20 Stopper

Claims (4)

A column base (4) is provided near the corner of the rectangular top plate (2), and the base end portion (5a) of the clue rod (5) is rotatably pivotally attached to the side portion of the upper end portion of the column base. , The clue rod stands up on the workbench where the posture can be freely changed between the standing posture (P1) in which the clue rod stands up toward the top plate and the retracted posture (P2) in which the clue rod is suspended downward. It is a support device that holds the posture and retracted posture.
Support bracket (9) with an upper support plate (9A) for receiving the clue rod in the standing posture (P1) and a lower support plate (9B) for receiving the clue rod in the retracted posture (P2). When,
A sliding cylinder portion (16a) that is extrapolated to the clue rod so as to be slidable, and an inner peripheral space that opens from the sliding cylinder portion toward the base end portion (5a) of the clue rod and has an enlarged diameter. It is composed of an operation cylinder (16) having a holding cylinder (16b) having 17).
Regarding the rotation direction of the clue rod, at least the first wall of the first wall portion (5A) facing the upper support plate portion (9A) and the second wall portion (5B) facing the lower support plate portion (9B). The lock pin (13A) urged in the protruding direction by a spring (14) and the lock pin (13A) are held so as to be inserted and locked while advancing and retracting freely from the surface of the portion (5A). A locking hole (18A) formed in the tubular portion (16b) constitutes a retractable locking means that locks the operating tubular body (16) in a non-slip manner.
When the clue rod (5) is in the upright posture (P1), the lock pin (13A) is inserted into the through hole (15A) formed in the upper support plate portion (9A) that receives the first wall portion (5A). In addition, the holding cylinder portion (16b) holds the upper support plate portion (9A), and the lock pin (13A) is inserted into the locking hole (18A) to lock the upper support plate portion (9A) so as to stand up (P1). ) Is configured to hold the upright holding mechanism (19A).
When the clue rod (5) is in the retracted posture (P2), the lower support plate portion (9B) receives the second wall portion (5B), and the holding cylinder portion (16b) holds the lower support plate portion (9B). It is characterized in that a storage holding mechanism (19B) for holding a storage posture (P2) is configured by inserting and locking the lock pin (13A) into the locking hole (18A) in a held state. A support device for clues on the workbench. A column base (4) is provided near the corner of the rectangular top plate (2), and the base end portion (5a) of the clue rod (5) is rotatably pivotally attached to the side portion of the upper end portion of the column base. , The clue rod stands up on the workbench where the posture can be freely changed between the standing posture (P1) in which the clue rod stands up toward the top plate and the retracted posture (P2) in which the clue rod is suspended downward. It is a support device that holds the posture and retracted posture.
Support bracket (9) with an upper support plate (9A) for receiving the clue rod in the standing posture (P1) and a lower support plate (9B) for receiving the clue rod in the retracted posture (P2). When,
A sliding cylinder portion (16a) that is extrapolated to the clue rod so as to be slidable, and an inner peripheral space that opens from the sliding cylinder portion toward the base end portion (5a) of the clue rod and has an enlarged diameter. An operation cylinder (16) having a holding cylinder (16b) having 17) and
When the operation cylinder is slid with the clue rod in the upright posture (P1) and the upper support plate portion (9A) of the support bracket is held by the holding cylinder portion (16b), it advances and retreats from the surface of the clue rod. By the first lock pin (13A) that freely advances and protrudes, the first through hole (15A) of the upper support plate portion through which the first lock pin is inserted, and the first locking hole (18A) of the holding cylinder portion. The configured upright holding mechanism (19A) and
When the operation cylinder is slid with the clue rod in the retracted posture (P2) and the lower support plate portion (9B) of the support bracket is held by the holding cylinder portion (16b), it advances and retreats from the surface of the clue rod. By the second lock pin (13B) that freely advances and protrudes, the second through hole (15B) of the lower support plate portion through which the second lock pin is inserted, and the second locking hole (18B) of the holding cylinder portion. A clue bar support device in a workbench, characterized in that it comprises a configured storage and holding mechanism (19B). Regarding the rotation direction of the clue rod, among the peripheral walls of the clue rod, the first lock pin (13A) is provided on the first wall portion (5A) facing the upper support plate portion (9A), and the upper support plate portion is provided with a first lock pin (13A). One through hole (15A) is formed, a second lock pin (13B) is provided on the second wall portion (5B) facing the lower support plate portion (9B), and a second through hole (15B) is provided on the lower support plate portion. ) Is formed
The first lock pin (13A) and the second lock pin (13B) are fixed to both ends of a substantially U-shaped leaf spring (14) mounted inside the clue rod, and are respectively fixed to the first wall portion (5A). The clue rod support device in the workbench according to claim 2, wherein the insertion holes (12A, 12B) formed in the second wall portion (5B) are inserted and projected from the wall surface. The outer peripheral surface of the clue rod (5) and the inner peripheral surface of at least the sliding cylinder portion (16a) in the operation cylinder (16) are formed in a square cross section so as not to rotate in the circumferential direction.
A first lock pin is located between the opening of the holding cylinder (16B) and the first lock pin (13A) and the second lock pin (13B) that come into contact with each other by sliding the operation cylinder (16). The clue rod support device in the workbench according to claim 2 or 3, wherein a guide surface (17a) for retracting the second lock pin from the protruding state is formed.

Images