JP4111842B2 - Gate bar for parking etc. - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gate bar which can be implemented at a doorway of a parking lot, a doorway of a toll road, or the like to open and close a vehicle passage.
[0002]
[Prior art]
For example, a conventional gate bar for a parking lot or the like as shown in Patent Document 1 is used to open and close the gate bar when an abnormal force is applied from the outside by hitting a vehicle or the like that passes during the opening and closing operation. In order to protect the internal drive system of the machine and prevent damage to the vehicle, the bar itself is configured to bend and break relatively easily so as not to transmit abnormal force directly to the drive system At the same time, measures are taken to minimize damage to the vehicle.
[0003]
Further, as seen in, for example, Patent Document 2, the above-described gate bar (blocking body) is configured in a flexible and extendable rod-like shape or bag-like shape, and is supplied with pressurized air inside to extend laterally. By using a gate bar configured to be able to be held, it is possible to protect the breaker drive system and prevent the vehicle from being damaged.
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 58-53396 [Patent Document 2]
Japanese Patent Laid-Open No. 10-153042
[Problems to be solved by the invention]
When the drive system of the circuit breaker that opens and closes the gate bar is damaged, it takes a great deal of cost and time to recover, so when abnormal pressure is applied from the outside as described above, the gate bar itself It is better to bend or break.
[0006]
However, there are problems with the replacement of the gate bar and the suspension of parking at the time until the replacement is completed. It is necessary to stock spare gate bars for early recovery. Disposal of bent or broken gate bars or environmental treatment costs such as material recycling occurs. There were various problems such as, and improvement was desired.
[0007]
In addition, with respect to the hollow and inflated structure of the gate bar as seen in Patent Document 2, the above problems such as replacement and disposal of the gate bar can be solved. However, on the other hand, a compressor for supplying pressurized air, In addition, since various devices such as a pressure sensor for detecting air pressure, or a switch device and a switching valve for controlling supply and exhaust of pressurized air are required for each gate bar, there is a problem that the installation cost increases.
[0008]
Therefore, the technical problem of the present invention is that the gate bar bends when it is overloaded so that the overload is not directly transmitted to the drive system, and the bent gate bar is simply returned to the original straight state and repeated. It is another object of the present invention to provide a gate bar for a parking lot or the like that can be used and that can be implemented at a relatively low cost.
[0009]
[Means for Solving the Problems]
(1) In order to solve the above technical problem, a gate bar for a parking lot or the like according to the present invention is attached to a breaker to open and close a passage of a vehicle such as a parking lot or a toll road as described in the first aspect. A gate bar is mounted on the opening / closing operation shaft of the circuit breaker, and both ends of the coil spring made of a shape memory alloy are wound around the front end side of the holder and the root end side of the gate bar in a screwed manner. The gate bar is connected and held in a straight state in the state where the end surfaces of the gate bar and the holder are brought into close contact with each other by the tension of the coil spring and in the direction of the tip end axis of the holder. To do.
[0010]
(2) Moreover, the gate bar for parking lots etc. which concerns on this invention forms both the said gate bar and a holder in the cylinder or pipe shape which has the same cross-sectional shape, as described in the said Claim 2, The length of the holder is shorter than the length.
[0011]
(3) Moreover, the gate bar for parking lots etc. which concerns on this invention can be fastened by inserting both the front-end | tip sides of the said coil spring to both the said gate bar and a holder, as described in the said Claim 3. A tool is provided.
[0012]
According to the means according to the present invention described in the above (1) to (3), one end side of a coil spring made of a shape memory alloy is first screwed around the root end side outer surface of the gate bar. After fixing the coil spring, the other end of the coil spring is similarly screwed around the outer surface of the front end of the holder provided in the circuit breaker, and then the gate bar is rotated until its root end surface is in close contact with the front end surface of the holder. Then, the other end surface of the coil spring is fixed to the holder so that the surfaces are brought into close contact with each other by the tension of the coil spring, and the gate bar is supported in a straight state in the axial direction of the tip of the holder. Since the “surface connection structure” configured is provided, the gate bar attached to the holder can be moved up and down integrally to open and close the vehicle passage according to the operation of the circuit breaker. .
[0013]
In addition, when attaching the gate bar, for example, one end of a coil spring wound around the root end of the gate bar is inserted and fixed into a fastener provided on the gate bar, and then the coil spring wound around the tip end of the holder The other end side of this is inserted into a fastener provided on the holder, and the gate bar is rotated and screwed in, so that the gate bar is pulled toward the holder side by the tension of the coil spring, and both end surfaces are brought into close contact with each other. If the coil spring is fixed by tightening the fastener, the degree of adhesion between the end faces increases, and the connection (attachment) of the gate bar to the holder can be made stronger.
[0014]
Note that the fixed end for initially fixing the coil spring may be either a holder or a gate bar, and the selection thereof is arbitrary.
[0015]
Furthermore, according to the means according to the present invention, pressure is abnormally applied from the outside to the gate bar connected to the holder, and an overload more than that set in the shape memory alloy material constituting the coil spring is applied. In this case, the coil spring is stretched and deformed, so that the gate bar is bent at the connection with the holder. Even when the pressure is applied, the pressure is not directly transmitted to the drive system of the circuit breaker and is not damaged, and the damage to the vehicle can be minimized.
[0016]
Further, according to the above-mentioned means according to the present invention, even if the wire material of the coil spring is bent due to overload, the wire material diameter is not deformed itself, for example, a coil spring made of hot water made of the shape memory alloy. It is equipped with a “restoration structure” that returns to the original coil shape imprinted on the coil spring by applying heat to the coil spring or by causing a current to flow through the coil spring and generating heat by electric resistance. It is possible to return the gate bar to the original straight usable state by a very simple operation.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The embodiment of the gate bar for parking lots and the like according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a state in which the gate bar constituting the present invention is connected to a holder, and FIG. FIG. 3 is a perspective view showing a state where the gate bar is bent due to overload, and in these drawings, 1 is an entrance or exit of a vehicle in a parking lot, Alternatively, a circuit breaker installed at the entrance or exit of a toll road, 2 is an operating shaft that opens and closes by a built-in drive system (not shown), 3 is a circular or square cylindrical section attached to the operating shaft 2, Or the holder formed in the shape of a pipe is shown.
[0018]
Reference numeral 4 denotes a gate bar formed in the shape of a circular cylinder or square tube having the same dimensions as the holder 3 or in the shape of a pipe. The holder 3 and the gate bar 4 made of, for example, a plastic material are connected to the gate bar 4. This is formed longer than the holder 3 attached to the operating shaft 2 of the circuit breaker 1.
[0019]
Reference numeral 5 denotes a coil spring formed entirely in a coil shape using a shape memory alloy. The inner diameter dimension of the coil spring 5 in a normal state is the same as or larger than the outer diameter dimension of the holder 3 and the gate bar 4. Made slightly smaller. Reference numerals 6 and 7 denote fastening tools attached to the respective sides of the holder 3 and the gate bar 4. Holes 6A through which the ends 5A and 5B of the coil spring 5 are inserted and inserted into these fastening tools 6 and 7 are provided. , 7A and screws 6B, 7B for tightening and fixing the inserted coil spring 5 are provided.
[0020]
The shape memory alloy coil spring 5 configured as described above connects and holds the gate bar 4 in a straight state in the axial direction of the tip of the holder 3 on the circuit breaker 1 side by its tension (elasticity). For connection, first, one end side of the coil spring 5 is screwed around the outer surface of the gate bar 4 as shown in FIG. 1, and the one end portion 5B is inserted into the hole 7A of the fastener 7 and inserted. Then, tighten and fix with screws 7B.
[0021]
Next, while rotating the gate bar 4 in the direction of the arrow shown in FIG. 1, that is, in the spiral direction of the coil spring 5 (clockwise rotation in the drawing), the other end of the coil spring 5 is screwed into the outer surface of the holder 3. As shown in FIG. 2, the other end 5A is inserted into and inserted into the hole 6A of the fastener 6 and the screwing type rotation is continued. Then, the gate bar 4 is attracted to the holder 3 by the tension generated in the coil spring 5, and the root end surface 4A of the gate bar 4 is in close contact with the tip end surface 3A of the holder 3 as shown in FIG. The gate bar 4 can be fixed in a state of being connected by the above-mentioned “surface connection structure” by tightening the screw 6B of the fastener 6 in this state.
[0022]
The gate bar 4 can be connected by the coil spring 5 by providing the coil spring 5 and the fasteners 6 and 7 inside the holder 3 and the gate bar 4 and connecting and fixing them inside. 3 and the gate bar 4 may be provided on both the inner and outer sides so that the connection is firmly supported from both the inner and outer sides. Furthermore, when the gate bar 4 is long, there may be provided a plurality of “surface connection structures” including the coil spring 5 and the fasteners 6 and 7 in the gate bar 4.
[0023]
Further, the drawing shows a configuration in which one end side of the coil spring 5 is screwed and fixed to the gate bar 4 side and then the other end side is screwed and fixed to the holder 3 by tightening. However, this is an example of implementation. First, the coil spring 5 may be wound and fixed on the holder 3 side, and then the gate bar 4 may be inserted into one end side of the coil spring 5 while being screwed and fixed. The selection is arbitrary.
[0024]
Furthermore, without using the fasteners 6 and 7, the gate bar 4 can be connected and held in a straight state with both end faces closely attached to the holder 3 only by the tension and clamping force of the coil spring 5, or It is also possible to simplify the structure by directly fixing both ends of the connected and held coil springs 5 to both the holder 3 and the gate bar 4 by adhesion or screws while maintaining the tension.
[0025]
Since the gate bar for parking lots and the like according to the present invention is configured as described above, when an overload more than that set for the shape memory alloy material of the coil spring 5 is applied to the gate bar 4, the coil spring 5 expands. Since the gate bar 4 is immediately bent as shown in FIG. 3 due to the deformation, this “buffer structure” prevents the overload from being directly transmitted to the drive system of the circuit breaker 1 and damages the drive system. In addition to preventing this, it is possible to minimize damage on the side of the vehicle or the like that has been overloaded.
[0026]
Further, even if the coil spring 5 is extended due to overload and a space is formed between the tip end surface 3A of the holder 3 and the root end surface 4A of the gate bar 4 as shown in FIG. Because the wire material of the coil spring 5 is bent and does not deform to the wire material diameter itself, for example, hot water is applied or current is passed. By simply doing this, the coil spring 5 can be returned to its original coil shape, and the gate bar 4 can be easily restored to the straight state (use state) shown in FIG.
[0027]
【The invention's effect】
As described above, according to the gate bar for a parking lot or the like according to the present invention, the excellent “surface connection structure”, “buffer structure”, and “restoration structure” described above allow the circuit breaker to be operated even under an overload. The drive system can be maintained, and it is possible to provide a gate bar that can be easily restored and repeatedly used even if it is bent due to overload, and has the convenience and economy that can be provided at a relatively low cost.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating a state when a gate bar for a parking lot or the like according to the present invention is assembled.
FIG. 2 is a perspective view illustrating a configuration when using a gate bar for a parking lot or the like according to the present invention.
FIG. 3 is a perspective view showing a state in which a gate bar for a parking lot or the like according to the present invention is bent due to overload.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Breaker 2 Actuation shaft 3 Holder 3A Tip surface 4 Gate bar 4A Root end surface 5 Coil springs 6, 7 Clamping tools 6A, 7A Holes 6B, 7B Clamping screw

Claims (3)

A gate bar that is attached to a circuit breaker and opens and closes a vehicle passage such as a parking lot or a toll road,
By attaching a holder to the open / close operation shaft of the circuit breaker and winding and fixing both ends of the coil spring made of a shape memory alloy on the tip end side of the holder and the root end side of the gate bar, respectively, by screwing. The gate bar for a parking lot or the like, wherein the gate bar is connected and held in a straight state in the direction of the distal end axis of the holder while the end surfaces of the gate bar and the holder are in close contact with each other by the tension of the coil spring . 2. The parking space according to claim 1, wherein both the gate bar and the holder are formed in a cylindrical shape or a pipe shape having the same cross-sectional shape, and the length of the holder is shorter than the length of the gate bar. Gate bar for parking lots. The gate bar for a parking lot or the like according to claim 1 or 2, wherein a fastening tool capable of inserting and fixing both ends of the coil spring is provided on both the gate bar and the holder.

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