Fence with rope cutting monitoring device

Abstract

Up until now, installing fences has been expensive, time-consuming, and required specialized skills. [Solution] A rope is stretched and held between support posts so that it can move, and an alarm device is activated by the change in the rope's resistance value when the rope moves or breaks due to someone passing under it.

Description

Technical Field

[0005] ,

[0001] The present invention relates to a preventive fence with an intrusion warning device for delimiting a site.

Background Art

[0002] Although there are fences that are tall, sturdy, and imposing, they seem to be expensive to construct and have a long construction period. However, they are not sufficient to prevent intrusion by thieves, those with malicious intent, or those with ill intentions. Also, without a fence, one feels overly defenseless and uneasy. Therefore, a fence is provided that intimidates and deters intrusion for the general public, is inexpensive, and has a short construction period.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Even fences that are expensive to install and require a long construction period are incomplete in preventing intrusion. Therefore, an alarm-equipped fence that has a poor intrusion prevention function but is inexpensive and has a short construction period is provided.

Means for Solving the Problems

[0005] Using materials and tools readily available at home improvement stores, such as rope, posts, and pipes, along with basic DIY skills, you can drive pipe posts into the ground, stretch an electrically conductive rope or wire between them, and arrange them vertically and horizontally at the required intervals. One example is rust-resistant stainless steel rope. If using electrically conductive posts, separate the rope with an electrical insulator. If you use a two-tiered pipe system, the first tier of pipes can be driven into the ground in a comfortable working position using a hammer, making the work more efficient. Even if the pipe heights are uneven, the height of the second tier of pipes can be easily adjusted by inserting, covering, or arranging the second tier of pipes on top of the first tier. A switch or cutter installed in the middle of the rope detects movement by passing under the rope, changing the rope's resistance. This resistance is then adjusted to fall within the operating base voltage range of a transistor switch circuit, activating alarm devices such as flashing lights or sounding buzzers for 24-hour monitoring. [Effects of the Invention]

[0006] It can be built with common materials, tools, and basic DIY skills, and installing a fence prevents intrusion and deters others, while also asserting territory. Electric fences or barbed rope fences are particularly effective in preventing damage from wild animals in mountainous areas. Since it's rope, the distance between posts can be long, making it economical, and installing line spacers to prevent crawling under and colored rope makes its presence even more noticeable. It's economical and quick to install. Installing lightning arresters makes it even safer. Compared to block walls, it's lighter and causes less damage in the event of an earthquake, as it won't cause injury or block roads. It allows for good ventilation. If the surrounding area is bleak or plain, painting the posts and line spacers to match the surroundings, adding helpful warnings or auspicious messages can change the atmosphere and reflect the personality of the residents. If the property is screened off by a barrier of, for example, 2 meters or more, it will appear eerie and intimidating from outside the property, making it impossible to know what is happening on the property or to help from outside, and vice versa. With this proposal, a reasonable sense of security is given to both residents and people outside the property, resulting in a win-win situation. Residents can live in peace and enjoy mental well-being. [Brief explanation of the drawing]

[0007] [Figure 1] This is a fence equipped with posts, ropes, sensor switches, etc. [Figure 2] This shows the mechanism and operation of the sensor switch in an alarm system. [Figure 3] This circuit uses the switching function of an NPN transistor to detect rope movement and abnormalities such as broken wires. [Figure 4] A circuit that prevents electric shock by applying voltages in opposite directions to both ends of a rope, canceling out the current flowing through the rope. [Figure 5] This is how to attach the rope to the component. [Figure 6] This is a fence without the alarm device shown in Figure 1. [Best Mode for Carrying Out the Invention]

[0008] It achieves easy operation through the use of inexpensive, general-purpose parts, a minimal number of components, and a simple structure. [Examples]

[0009] Figure 1 is In a fence with posts installed in two stages, for example, the first stage post 1 is driven into the ground at a length that is easy to drive, about half the height of a person, and the second stage post 2 is inserted 3, placed over 4, and placed side by side 5 into the first stage post, and the posts are fixed to each other with bolts 6 or bands 7. If necessary, multiple posts from the third stage onward may be installed. Joists 8 may be installed on the posts and pipes to prevent the posts from falling over. If one or more monitoring sensors 11 of alarm devices installed in the middle of the rope 9 are fixed to the posts with a tensioning device 12 (both ends are electrically insulated) that has a stopper that limits the elongation of the spring or the like and obtains tension by the force of the spring returning to its original shape, the rope will not sag. Install single or multiple stages vertically while hanging them on pulleys 13, insert the other end of the rope into a through hole or groove 14-1 made in the post, pull it with pliers or the like to tension it, and fix it in the hole or groove with a wedge 14 or the like. The ends of the rope are connected to the electronic and electrical circuits of the alarm device. If wedges are used, the rope can be easily readjusted and re-secured by pulling it with pliers or similar tools. Line spacers 15 are used to hold the ropes together to prevent them from slipping out. One point of the line spacer 15 connecting to the rope 9 is fixed to the rope, while the other points move in the opposite direction to the rope, so they are held loosely. When n sensors 11 of the alarm device are installed in series, the length covered by one sensor 11 is 1 / n of the total elongation of the rope, and the sensor 11 may stop working, so the rope is fixed to the support post 16 within the operating range. Also, if the rope is cut, the entire length must be re-attached to restore it, so a stopper 17 installed on the rope is used to press it against the support post and limit the range of movement. This also prevents the rope from bouncing back. The rope 18 may also be sent to other areas. A permanent magnet 11-2 is installed on the entrance / exit door, a magnetic reed switch 11-1 is installed on the fence side, and a reed switch short-circuit switch 11-3 is installed. When the short-circuit switch 11-3 is turned on, the alarm will not sound when the door is opened or closed. When switch 11-3 is turned off, the alarm will sound. ... (Circled number 1) This system involves suspending a weight 19 or similar object from one end of a rope attached to a support post. A stopper 20, also attached to the support post, prevents the weight 19 from rising due to the rope's pull. Using a weight ensures the rope's tension remains constant. The rope 9 is installed vertically and diagonally. The pulley can be attached to a rope, or to a piece of lumber or pipe 21... (circled number 2) If it's a mechanical barrier fence without monitoring devices, the rope can be electrically insulating.

[0010] Figure 2 shows the mechanism and operation of the alarm device sensor 11. The return force of a spring such as a compression spring 23 inside the cylinder 22 brings the switch's contact point 24 into contact, and one end of the cylinder 22 is fixed... (circled number 1A) Contact 24 has lost its grip due to the tensile force of the rope and separated; if the contact is broken, the left and right ropes are electrically insulated. Springs, cylinders, etc. are made of electrically insulating material, or covered with or separated from an electrically insulating material, ...B of circled number 1 It's a tension spring that uses two cylinders to change the overall length and switch the contacts on and off... Circled number 1 C The return force of a spring such as a compression spring 25 inside the cylinder 22 causes the switch contact 24 to make contact... Circled number 2A The rope's pulling force causes the contact point to separate... Circled number 2B This is a tension spring in which the insulator 26 of one contact point is inserted into the other pipe, ensuring that the contact points of the pair of pipes are connected parallel and do not shift. When installed on a support post, the spring is secured with a bolt 49 attached to the post to prevent the other end from moving when one end is pulled. If installed in the middle of a rope 9, the bolt 49 is not needed. The entire unit is covered with a cover 27 to protect it from rainwater and dust... (circled number 2C) A magnetic reed switch 28 and a permanent magnet 29 are installed inside the cylinder, and the switch 28 is turned on and off depending on the distance of the permanent magnet 29. Since the reed switch 28 is sealed, the contacts do not deteriorate... (Circled number 3A) A ring containing a permanent magnet 30 with a reed switch 31 inserted inside to switch it on and off... Circled number 3B The contacts are installed inside the circular leaf spring 36, and the whole thing is covered with a cover 37 to protect it from rainwater and dust... Circle number 4A Contact point 24 has given way to the rope's tensile force and separated... Circled number 4B A 38mm notch is cut into the leaf spring and the rope is pressed in, or a through hole is made in the leaf spring and connected to the contact point... Circled number 4C Two leaf springs connected via an electrical insulator 39; the spring force can be adjusted by changing the thickness of the insulator 39... (Circled number 4, D) A U-shaped leaf spring 41 that closes the contact... circled number 4, part E Tear off mechanical fuse 42 to break the circuit... circled number 5A The fuse 42 is housed in the divisible box 43, and if it blows, ropes are secured at both ends of the box. Markers 44 protrude from both ends to indicate the sensor's operation... Circled number 5B This switch has a permanent magnet 46 on one contact and a magnetic material 47 such as iron on the other contact. A permanent magnet and iron are used to improve contact adhesion and cutting performance... Circled number 5 C

[0011] Figure 3 shows a transistor that uses an alarm to operate at the highest possible voltage and current within the permissible upper limit that does not cause adverse effects or actual harm to the human body. The upper part is a circuit that uses the switching function of an NPN transistor to detect the abnormality of a rope breakage through resistance values. The rope is electrically conductive. When the power switch 50 is turned on, the voltage is divided by resistance values r1 and r2 so that the transistor turns on, and, for example, 0.7 volts is applied to the base as the operating voltage. The resistance values r1 and r2 may be a single resistance value divided or multiple resistance values divided into two groups. If the rope is connected, the combined resistance value of the resistance value r4 of the rope and r2 is lower than r1, so the operating voltage is low and the transistor is off. If the rope is cut, the combined resistance value increases, the base voltage enters the operating range, and the transistor is turned on. The relay R1 connected to the collector is turned on, and the other relay R2 is also turned on. If the switching switch 51 is on and the contact 52 is turned on for a moment, the operation is maintained continuously. Since the rope is charged, for safety, the contact 53 is quickly cut. The resistor r5 may not be a resistor that adjusts the rope resistance value or reduces the electric shock voltage when touching the rope. The switch 54 is for testing whether the circuit is normal by intentionally cutting the rope. r3 is for supplying an appropriate voltage to the relay R1. A diode 55 is installed in series with the contact 52, and a capacitor 56 is installed in parallel with the relay R2. The switch 51 is turned off. When the a contact 52 is turned on, the capacitor 56 is charged through the diode 55. Even when the a contact 52 is turned off, the capacitor 56 discharges through the relay R2, so the relay R2 continues to operate. By changing the capacitance of the capacitor 56, the operating duration of the relay R2 can be adjusted. It may be possible to replace it with a capacitor 56 with a capacitance corresponding to the operating time. The switch 53 may be a time-limited operation b contact so that the capacitor can be fully charged. If the relay R1 recovers in a short time, the operation of the relay R2 also stops. There is no need to turn off the power switch 50 every time there is a short-time operation due to mischief or the like. If the alarm is short, it is mischief; if it is long, it can be determined whether the rope is cut. Turn on the alarm bell 58 and the lamp 59 at the a contact 57 of the relay R2. When separating the space between the relay R2 and the a contact 57 into squares 1 and 2, it may be made wireless by connecting a transmitter and a receiver. Separate the rope 9 and r1, r2 like squares 2 and 3, and the part of 3 may be installed in one place. The lower part uses a PNP transistor. The operation is the same as that of the NPN transistor in the upper part. If you touch the rope during the warning, a current of a size safe for the human body will flow and it will give a start warning.

[0012] Figure 4 shows that the rope 9 is shared by voltages V1 and V2. By making the current flowing through the rope 9 the same at each end of the rope with the respective voltages and applying the voltages in the reverse direction to cancel out the current in the rope 9 so that no potential difference occurs, it is safe and there is no electric shock even if you grab it with wet hands or bare hands. The voltages V1 and V2 can be made higher, and current can flow even through a rope with a high resistance value. If the outer periphery of the rope is covered with an electrical insulator such as vinyl, there will be no electric shock even if you touch the rope, but if the electrical insulator is damaged, there may be compensation due to an electric shock accident. ··· Round number 1 The operations of the transistor and the relay are the same as those in Figure 3. The respective base voltages are applied in the reverse direction to the rope 7. When the rope 9 breaks, the transistors, relays R1 and R2 in each circuit are turned on one by one, and the buzzer BZ and the lamp L of the alarm device connected to the a contact of R2 operate. L1 is a confirmation lamp during the warning ··· Round number 2

[0013] Figure 5 shows how to hang the rope 9 on the support 2. It may be hung directly, but after setting it on the flat member 61, fix the member to the support with bolts or bands 62. A position that cannot be seen from the front on the back side of the support is good. Press the rope into the C-shaped member 63. Make a cut 64 in the member. Fix it with a saddle 65. The alarm sensor 11 may be housed in the above 63, 64, 65. Install a stopper 17 for restricting the rope movement range on the rope. Set the rope to move with a pulley 13 on a flat member. Set the respective pulleys 13 of the rope on one shaft so that the rope bends at the corner. Set a groove 66 for the rope to enter on one shaft. Apply grease such as grease if it is not easy to slide.

[0014] Figure 6 shows the fence from Figure 1 with the monitoring and alarm device removed. [Industrial applicability]

[0015] This device can be installed in locations to assert territory or prevent intrusion. [Explanation of symbols]

[0016] 1, 2 posts 3. Insertion of support posts 4. Covering the support posts 5. Arrangement of support pillars 6 screws 7 bands 8 joists 9 ropes 11 Alarm system monitoring sensors 12 Stretching device 13 Pulley 14 Wedge 14-1 Through holes and grooves 15 Line Spacers 16 Fixing brackets 17 Stopper 18 Other areas 19 Weight 20 Stoppers 21 Pulley mounting member 22 cylinders 23 Compression spring 24 contacts 25 tension spring 26 Electrical Insulating Rods 27 Protective cover 28 Magnetic reed switch 29 Permanent Magnets 30 permanent magnets 31 Magnetic reed switch 36 O-type leaf spring 37 Protective cover 38 cuts 39 Electrical insulators 40 leaf springs 41 U-shaped leaf spring 42 Mechanical fuses 43 cases 44 Operation confirmation marker 45. Connection by screwing or crimping. 46 Permanent Magnets 47 Magnetic material 49 Bolts set on the support posts 50 Power switch 51 Changeover switch 52 normally open contacts 53 b contact 54 Test Switch 55 diodes 56 Capacitors 57 normally open contacts 58 Buzzer 59 Light 61 components 62 Mounting bolts, bands 63 C-shaped mounting member 64 cuts 65 saddle 66 grooves for ropes

Claims

1. A fence with a monitoring device is installed where a rope is stretched between two posts at one end of the fence using a spring or weight-like stopper to limit its movement, allowing it to pass through slightly, and fixed to the other post with a wedge-like fastener. The movement of the rope causes a change in the resistance of a sensor switch, which is held in close contact by a spring-like mechanism, or the rope is cut. This change in resistance is used as the operating base voltage for a transistor, which then activates a relay in an alarm device.

2. A fence with a monitoring device according to claim 1, wherein the contacts of a sensor switch are separated by a spring-like mechanism, or the reed switch is separated from the permanent magnet, or the mechanical fuse of the switch is torn off, or the switch of the permanent magnet is separated by the force of a rope.

3. A fence with a monitoring device according to claims 1 to 2, wherein the voltage of the divided resistance values ​​is set to become the operating base voltage of the transistor, one of the resistance values ​​and the resistance value of the rope are connected in parallel so that the combined resistance value is smaller than the other resistance value so that it falls below the operating base voltage, and the rope is cut to return to one of the resistance values ​​and set to the operating base voltage to activate the alarm device.

4. A fence with a monitoring device according to claims 1 to 3, wherein the current flowing through the rope from the base voltage of a transistor applied to one end of the rope and the current flowing through the rope from the base voltage applied to the other end in the opposite direction are made equal, canceling out the currents flowing through the rope and eliminating the generation of a potential difference to prevent electric shock.

5. Fence with monitoring device according to claims 1 to 4, wherein the first support post is set to a length that is easy to drive, such as half the height of the person, and the next support post is inserted, placed over it, placed side by side and fixed, so that the total length of the support posts is the desired length.

6. A fence without the monitoring sensor set on the rope according to claim 1 and its electronic and electrical circuits.

Images