JP2739182B2 - Post locking device for fence post - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower part of a fence post used as, for example, a car stop fence, and an upper surface of an outer cylinder buried so as to fit the lower part of the post. The present invention relates to a column locking device for a column for fence provided with a locking mechanism for locking the column between the columns.

2. Description of the Related Art Conventionally, this type of fence post includes a portable type in which a portable column is detachably fitted from above to a relatively shallowly buried short outer cylinder, and the length of the column is determined by the length of the column. There is an elevating type in which a relatively long outer cylinder is provided and a column is fitted in the outer cylinder so as to be movable up and down.

In the former, there is provided a lock mechanism for locking a space between the upper surface of the outer cylinder protruding on the ground surface and the lower part of the pillar standing up on the ground by a lock such as a padlock. Further, for example, as shown in Japanese Utility Model Application Laid-Open No. 58-59821, a hook piece that is rotatable between a locking position and an avoiding position by allowing a rotation operation from the outside is provided in an upper surface portion of an outer cylinder. And a locking mechanism is provided at the lower part of the column, which engages with the hook at the locking position, and a locking mechanism is provided so that the column cannot be rotated or moved up and down by the engagement of the two. .

Problems to be Solved by the Invention The portable former, in which the lower part of the support is locked by a lock, has the drawback that the lock appears on the ground surface during use of the fence and impairs the appearance, and the lock together with the support when not in use. It is necessary to carry in and out, and there is inconvenience in use. On the other hand, the latter, in which the lock mechanism is integrally set on the fence post, is provided with a screwdriver or the like in the turning recess provided at the upper end of the pivot shaft of the hook piece that is exposed on the upper surface of the outer cylinder. If anyone inserts the edge of a coin, anyone could unlock it. Therefore, it has been an issue to develop a column locking device that is set integrally with the column for fence, has no inconvenience in use, and does not allow the front side to know how to open the column.

Means for Solving the Problems In view of the above, the present invention provides an outer cylinder which is buried with an upper surface provided with an opening on the ground surface, and a column which fits a lower portion of the outer cylinder and stands on the ground in a use state. A hook that is provided in the upper surface portion as a lock mechanism so as to be capable of rotating operation from the outside, and that rotates between a locking position and an avoiding position,
In a column locking device for a fence post provided at a lower portion of the column and provided with a hook portion that engages with the hook in a locking position, when the hook is in the avoiding position, the escapement is performed upward. A first magnet, which is to be blocked, is provided in the upper surface portion, and the surface facing the magnet is made to have the same polarity below the first magnet, and the first magnet is always rotated by the hook. A second magnet that repels so as to push it into the plane is provided, while the hook has an engagement hole for receiving the upper end of the first magnet in the locked position. In order to release the engagement with the magnet, a third magnet, which is portable and has a magnetic force larger than the repulsive force between the first magnet and the second magnet, is used as a key of the lock mechanism. It is intended to provide a column locking device for a column for a fence, which is provided as follows.

Action As described above, the mechanism lock according to the present invention is set integrally with the fence post. Then, it is possible to know the turning operation of the hook for locking the support from the portion that is exposed to the upper surface of the outer cylinder, but by turning the hook to the locking position,
The first magnet repelled by the second magnet and the engaging hole provided in the hook engage with each other in the upper surface portion to lock the column so that it cannot rotate and move up and down. This locked state cannot be seen from outside. Therefore, only the person who can use the third magnet as a key can perform the opening operation, and it is possible to prevent the fence post from being unnecessarily pulled out or lowered. Further, the first magnet for preventing the rotation of the hook as described above, when the hook is at the avoidance position, the back surface of the hook is prevented from intervening on the rotation surface, and Automatically engages with the rotation of the first magnet, and requires the use of the third magnet only during the opening operation. Therefore, the operation at the time of locking the column is only required to use a tool such as a screwdriver.

In the present invention, as an operation structure for rotating the hook, an outer end of a pivot shaft of the hook which rotatably projects on the upper surface of the outer cylinder should be engaged with a tool such as a screwdriver. A tool provided with a concave portion and provided with a convex portion engaging with the concave portion and integrally provided with the third magnet is a third magnet serving as a key and a tool for rotating a hook piece. Is always carried as one unit, which prevents situations such as key loss and is convenient for use. Also, without mistake of the polarity of the third magnet,
There are advantages such as smooth unlocking operation.

Embodiment The embodiment shown in the drawings is a case in which the present invention is used for an up-and-down type fence post, and the present invention will be described below with reference to this embodiment.

In the figure, A is a rectangular outer cylinder in which a circular flange-shaped upper surface 1 of an appropriate thickness is integrally provided at the upper end of a rectangular cylinder, and B is an outer cylinder A embedded with the upper surface 1 shown on the ground surface. The column B is a cylindrical column that fits up and down freely. The column B has a pin 3 that rises from an opening 2 provided in the upper surface 1 and protrudes in a diametrical direction of a lower portion B ′ when the fence is in use. An upright state is supported by hooking on a hook step portion 4 integrally formed on both upper side surfaces of the outer cylinder A.

R is a lock mechanism provided on the lower part B 'of the elevating column B and the upper surface 1 of the outer cylinder A. Reference numeral 5 denotes a mounting recess formed on the back surface of the metal plate 6 covering the upper surface portion 1, and one side is opened to the opening 2 side, and 7 is fitted into the mounting recess 5, and is rotatable by a pivot shaft 8. A hook piece that is attached and displaces the fan-shaped hooking portion 7 'between the avoiding position shown in FIGS. 1 and 2 and the locking position shown in FIGS. A vertical hole formed in the mounting recess 5 so as to be closed by the back surface thereof, G1 is a first magnet which is fitted to the upper portion of the vertical hole 9 so as to be able to move up and down, and G2 is a guide rod 10 and a restoring spring 11 which are downward. And a second magnet supported below the vertical hole 9 so as to be able to freely move up and down in an appropriate range. This second magnet G2 and the first magnet
G1 has surfaces facing each other at the same polarity, and the first magnetic force G1 is always urged in the ascending direction by the repulsive force. Reference numeral 12 denotes a horizontally elongated portion at the lower portion B 'of the column B so as to engage with the fan-shaped engaging portion 9 projecting from the mounting concave portion 5 having one side opened toward the opening portion 2 when the hook 7 is in the locked position. The pillar B, which is in the shape of a hole and is upright and in use, is a hook hole.
The rotation is locked by the hook 7 that engages with 12. Reference numeral 13 denotes a hook positioned so as to be positioned directly above the vertical hole 9 when the hook 7 is rotated from the avoidance position to the locked position, so as to automatically receive the upper end of the first magnet G1 released from the restraint. 7 is an engagement hole. The hook 7 is prevented from rotating in the reverse direction, that is, turning to the avoidance position, by the interference of the magnet G1 with the turning surface due to the engagement between the first magnet and the engaging hole 13.

Reference numeral 14 denotes a concave portion provided on the upper end surface of the pivot shaft 8 so as to engage with a tool such as a driver. The hook 7 and the first to third
The lock mechanism R made up of the magnets G1, 2, 3 and the like is covered by the metal plate 6 of the upper surface 1 except for the upper end surface of the pivot shaft 8 having the concave portion 14, and the structure thereof is viewed from the outside. It is hidden.

As shown in FIG. 5, C has a recess 15 which engages with the recess 14 on the back surface of the tip of the hammer-shaped body.
The operation tool G3, which is to be rotated from the outside, is a third magnet which is arranged in parallel with the recess 15 on the back surface of the distal end portion of the operation tool 15 so as to be used as a key of the lock mechanism R. . This third magnet G3 is composed of the first magnet G1 and the second magnet G1.
While having a magnetic force larger than the repulsive force between G2 and
The back surface facing the first magnetic force G1 has the same polarity, and is formed integrally with the operating tool C.
When the protrusion 15 of the tool C is engaged with the hook C, the hook C is located just above the engagement hole 13 of the hook 7 concealed by the metal plate 6. Therefore, when the operating tool C is engaged with the pivot shaft 8 of the hook 7 when the hook 7 is in the locked position shown in FIGS. The first magnet G1 is pushed down against the repulsive force between the first magnet G1 and the second magnet G2 due to the strong magnetic force of the third magnet G3, and retreats to a position where it does not interfere with the first magnet G1. Open pivotally. Therefore, the operating tool C is moved to the fifth state in this state.
By rotating counterclockwise in the figure, the hook 7 ′ of the hook 7 is released from the hook hole 12, and the locking of the support B is released.

In the figure, reference numeral 16 denotes a click spring which engages with a projection 17 formed at the other end of the hook 7 in the mounting recess 5 so as to correctly position the hook 7 at the avoidance position and the locking position.

In addition, the present invention is not limited to the lift-type fence support shown in the drawings, and can be applied to a portable fence support. Also, the lock mechanism R
It is needless to say that the shapes of the hook pieces 7 and the hook holes 12 provided on the column side are not limited to those of the illustrated embodiment, and can be changed in design according to the gist of the present invention.

According to the strut locking device of the present invention configured as described above and configured to operate as described above, the pivot attachment as pivoting operation means for pivoting the hook that locks the strut is provided. The recess at the upper end of the shaft appears on the surface of the upper surface of the outer cylinder, but as described above, the column is locked so that it cannot be opened by the interfering hook of the first magnet that repels the second magnet. From the front side, the lock mechanism and the unlocking operation method cannot be known.
Therefore, it is impossible for anyone other than the person carrying the third magnet to lower or remove the support, and the fence support is correctly used and is very useful for safety management of the use state. There is an effect that is.

[Brief description of the drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a partially cutaway plan view of a column stored state, FIG. 2 is a partially cutaway elevation view of the column stored state, and FIG. FIG. 4 is a partially cutaway elevational view of the same, and FIG. 5 is a perspective view of the main part of the lock mechanism in a locked state and a third magnet integrally formed with an operating tool for rotating operation. It is an exploded perspective view in the case. A ... outer cylinder, 1 ... upper surface part, 2 ... opening, B ... pillar, B '... lower part, 3 ... pin, 4 ... hanging step, R ...
... Locking mechanism, 5 ... Mounting recess, 6 ... Metal plate, 7 ... Hook, 7 '... Hook, 8 ... Pivot shaft, 9 ... Vertical hole, G1 ...
... first magnet, G2 ... second magnet, 10 ... guide rod, 11
... A restoring spring, 12... A latching hole, 13... An engaging hole, 14... A concave portion, C... An operating tool, 15... A convex portion, G3.
16 ... Click spring, 17 ... Protrusion.

Claims (2)

(57) [Claims] 1. An outer cylinder A which is buried with its upper surface 1 having an opening 2 shown on the ground surface, and a support B which is fitted on the outer cylinder A and which stands on the ground in use by fitting a lower part B '. A hook 7 which is provided in the upper surface portion 1 as a lock mechanism R so as to be capable of being rotated from the outside and rotates between a locking position and an avoiding position, and a lower portion B ′ of the support B. And a locking device for a fence post provided with a hook 7 'which is engaged with the hook 7 in the locking position, the escape of the upward movement when the hook 7 is in the avoidance position. A first magnet G1 to be blocked is provided in the upper surface portion 1, and a surface facing the magnet G1 has the same polarity below the first magnet G1. A second magnet G2 is provided which is always repelled so as to be pushed out into the rotation plane of the hook 7, while the hook 7 is provided with the second magnet G2 in the locked position. An engagement hole 13 for receiving the upper end of the first magnet G1 is provided, and the engagement between the engagement hole 13 and the first magnet G1 is released. And a third magnet G3 having a magnetic force larger than a repulsive force between the first magnet G1 and the second magnet G2 as a key of the lock mechanism R. 2. An operation structure for rotating the hook 7 includes a driver or the like at an outer end of a pivot shaft 8 of the hook 7 which rotatably projects on the upper surface 1 of the outer cylinder A. The operating tool C having a concave portion 14 to be engaged with the third tool, and the operating tool C having a convex portion 15 to be engaged with the concave portion 14 is provided integrally with the third magnet G3. 3. A support locking device for a fence support according to claim 1.