JPH0640654Y2 - Vertical embedded fence post - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention comprises an outer cylinder that is vertically embedded with an opening on the surface of the earth, and a pole that is vertically movable in the outer cylinder.
The present invention relates to a vertical embedded shelf column in which a pole is moved up and down by urging a shape memory alloy spring.

2. Description of the Related Art For example, Japanese Utility Model Laid-Open No. 58-59821 discloses a vertical embedded vertical column in which the pole can be moved up and down only by manual force, and the weight of the pole is reduced by urging a shape memory alloy spring. An example of a lighter lifting / lowering operation is Japanese Patent Application No. 63-70669 filed by the applicant of the present application.

Problems to be Solved by the Invention The above-mentioned vertical embedded shelf column of the prior application was equipped with a shape memory alloy spring so as to expand and contract on the outside of the pole, so the external shape becomes large and the weight increases and it is installed. There were drawbacks, such as the location being easily restricted. Therefore, it has been a problem to make this type of vertical embedded shelf column compact and downsized.

Means for Solving the Problems Therefore, the present invention includes an outer cylinder that is vertically embedded with an opening on the surface of the earth, and a pole that is vertically movable in the outer cylinder. In the vertical embedded shelf column in which a shape memory alloy spring having a constant balancing force commensurate with the weight of the pole is provided to reduce the lifting and lowering operation of the pole, fixed to the bottom of the outer cylinder. A vertical buried shelf characterized in that a spring receiving column standing upright inside the pole is provided, one end of the shape memory alloy spring is connected to the upper end of the spring receiving column, and the other end is attached to the bottom of the pole. It provides pillars.

In the shelf column of the present invention configured as described above, the expansion and contraction of the shape memory alloy spring for urging the up and down movement of the pole is performed in the hollow pole. can do.

In the present invention, the bottom of the pole is formed of a relatively rotatable bottom plate, and the other end of the shape memory alloy spring is collected on a take-up reel attached to the lower surface of the bottom plate, and on the bottom plate,
The spring receiving column provided with an insertion hole so as to follow up and down of the pole can easily be provided with a latching structure that allows the pole to be latched by the outer cylinder between the raised position and the lowered storage position. There are advantages.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In the figure, A is a rectangular outer cylinder that is vertically embedded in the ground by showing the flange portion 1 at the upper end having an opening A'on the ground surface G, and B is provided with a pull tab 2 at the upper end surface, A cylindrical pole fitted to the outer cylinder A so that it can be raised and lowered so as to project from A'to the ground, C is provided between the outer cylinder A and the pole B,
The pair of left and right coil-shaped shape memory alloy springs have a constant balancing force equivalent to the gravity of the pole B.

3 is a spring receiving column that is fixed to the bottom a of the outer cylinder A and stands up inside the hollow pole B in an inverted U shape.
And a circular bottom plate 5 which is formed separately from the circular pole B and which fits by freely rotating in the horizontal direction. The circular bottom plate 5 is rotatably mounted on a bracket 6 vertically provided on the lower surface of the bottom plate 4. It is a two-stage upper and lower take-up reel that is horizontally mounted. One end 7 of the shape memory alloy spring C is connected to the inner surface of the upper end of the spring receiving column 3 to form a fixed end, and the other end 8 is wound on the two-stage winding reels 5, respectively. It forms the free end.

Reference numeral 9 denotes a pair of insertion holes provided in the bottom plate 4, which are spring receiving columns 3
And the shape memory alloy spring C is inserted through the bottom plate 4 so that the bottom plate 4 follows the elevation of the pole B.

Reference numeral 10 denotes a retaining pin projecting in the diameter direction on the outer periphery of the lower portion of the cylindrical pole B, and 11 denotes engagement of the retaining pin 10 on the lower portion of the outer cylinder A as shown in FIG. As shown in FIG. 2, the latching recesses 12 for latching are provided on the upper part of the outer cylinder A and the latching pin 10 is provided.
Is a hooking recess for hooking the pole B in an upright state.

Reference numeral 13 is a guide which is formed on the inner side surface of the outer cylinder A and which fits a notch 14 provided on the outer periphery of the rotary plate 4 to hold the bottom plate 4 non-rotating.

With this vertical embedded shelf column configured as described above, when the handle 2 is held and the pole B is rotated 45 ° to the left in the stored state shown in FIG. 1, the latch pin 10 escapes from the lower latch recess 11. Then, it is located at a corner of the outer cylinder A and can project upward (see FIG. 3). The pole B whose lower hook is released has its weight reduced by the bias of the shape memory alloy spring C, almost automatically rises in the outer cylinder A, and projects onto the ground surface G. Paul B
Is restricted by the retaining pin 10 coming into contact with the lower surface of the inner peripheral surface of the flange portion 1. Then, when the pole B is rotated rightward by 45 ° in the direction indicated by the imaginary line in FIG.
The locking pin 10 that used the corners of the
Fits with 12 to lock the standing state of pole B. In addition,
Needless to say, the weight of the pole B can be reduced by the bias of the shape memory alloy spring C even during the storage operation.

When the pole B is moved up and down, the shape memory alloy spring C repeatedly expands and contracts inside the hollow pole B from the stretched state shown in FIG. 1 to the rolled-up state shown in FIG. Further, since the bottom plate 4 constituting the bottom portion b of the pole B is inserted through the insertion hole 9 between the spring receiving column 3 and the shape memory alloy spring C, the bottom plate 4 follows the ascent and descent of the pole B, and when ascending, the pole plate 4 is moved. B
Is pushed up and is pushed down by the pole B when descending, but the pole B that engages the latch pin 10 with the latch recesses 11 and 12
Does not follow the rotation of.

Effect of the Invention As described above, the outer cylinder is embedded vertically with the opening portion exposed to the surface of the earth, and the pole fitted to the outer cylinder so as to be able to move up and down. A vertical embedded shelf that is equipped with a shape memory alloy spring with a balanced constant force corresponding to the weight to reduce the lifting and lowering operation of the pole, and is fixed to the bottom of the outer cylinder and stands up inside the pole. The present invention, in which a spring receiving column is provided, one end of the shape memory alloy spring is connected to the upper end of the spring receiving column, and the other end is attached to the bottom of the pole, the expansion and contraction of the shape memory alloy spring for urging the vertical movement of the pole. Since this is done inside the pole, this type of vertical embedded shelf column can be made compact and compact. Therefore, according to the present invention, it is possible to reduce the weight of the body and to install it in a small place, and to promote the spread of the embedded shelf column with the shape memory alloy spring that can be lightly operated. There is expected.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a partially cutaway vertical sectional view in a stored state, FIG. 2 is a partially cutaway vertical sectional view in a standing state, and FIG. FIG. G ... ground surface, A ... outer cylinder, A '... opening, a ... bottom, 1 ... flange, B ... pole, b ... bottom, 2
...... Puller, 3 ...... Spring receiving column, 4 ...... Bottom plate, 5 ......
Take-up reel, 6 ... Bracket, C ... Shape memory alloy spring, 7 ... One end, 8 ... Other end, 9 ... Insertion hole, 10 ... Latch pin, 11, 12 ... Latch recess, 13 ... guide, 14 ... notch.

Claims (2)

[Scope of utility model registration request] 1. An outer cylinder A having an opening A'shown on the ground surface G and vertically embedded therein, and a pole B fitted in the outer cylinder A so as to be movable up and down. Between, Paul B
In a vertical embedded shelf column in which a shape memory alloy spring C having a constant balancing force commensurate with the weight of the pole B is provided to reduce the lifting operation of the pole B, the vertical fixed shelf column is fixed to the bottom portion a of the outer cylinder A. A spring bearing column 3 standing upright inside the pole B is provided, one end 7 of the shape memory alloy spring C is connected to the upper end of the spring bearing column 3, and the other end 8 is the bottom portion b of the pole B.
A vertical embedded shelf column that is characterized by being attached to. 2. The bottom b of the pole B is constituted by a bottom plate 4 which is rotatably provided relative to the lower portion of the pole B, and the other end 8 of the shape memory alloy spring C is the bottom plate. 4 is provided with an insertion hole 9 of the spring receiving column 3 so that the bottom plate 4 can be wound up on a winding reel 5 attached to the lower surface of the wire 4 and can follow up and down of the pole B. Vertical embedded shelf column according to claim 1 of the new model registration claim.