CN201498062U - Fence detector and sensing device thereof - Google Patents

Abstract

The utility model provides a fence detector and a sensing device thereof, the sensing device is mainly provided with a control component and a magnetic attraction component pivoted in a fixed component, and a sensing component is sleeved outside the fixed component, the fence detector is mainly sleeved with a shell body on the sensing device, and an elastic body is arranged in the shell body to push the sensing component to one side in the shell body, a connecting component on the shell and a connecting part of the inductor are fixedly arranged on the fence, when the fence is pulled by external force, the induction component moves and attracts the magnetic attraction component, and then the switch of the control component is triggered to trigger the alarm, the sensing device has few components and the swinging body directly presses the actuating switch, so that the situation of poor contact or failure caused by inconsistent processing quality of internal components is not easy to occur, further provides a fence detector with easy installation, long service life, reliable action and better sensing effect.

Description

Fence detector and its sensing device

technical field

The utility model relates to a fence detector and its sensing device, in particular to a fence detector and its sensing device with good sensing effect and easy assembly.

Background technique

The fence detector is a sensing device in the protection system. It is installed on the fence to sense whether someone touches the fence, so as to prevent illegal personnel from invading or escaping. It is often installed on the periphery of prisons and communities. , military important places... and other places that need to isolate personnel from entering and exiting.

Please refer to FIGS. 9-11 , the known fence detector includes a sensing device 1a, a housing 3a, an elastic body 4 and a connecting component 5a.

The induction device 1a is disposed inside the housing 3a, the induction device 1a includes a reed assembly 7, a positioning sleeve 112a and an induction assembly 20a, the reed assembly 7 is disposed inside the positioning sleeve 112a and connected to an external control system, the reed assembly 7 includes an insulating and antimagnetic reed seat 71, a breaking reed 72a and a passage reed 72b, a magnet 73 and a fixed piece 74, the breaking reed 72a and the passage reed 72b is arranged on the reed seat 71 in parallel with a distance apart, the magnet 73 is arranged between the ends of the reed group 72 and is movably arranged on the reed seat 71, the fixed piece 74 is a ㄇ-shaped metal sheet, the The fixing piece 74 is sleeved on the outside of the reed seat 71 and maintains a proper gap with the reed set 72 , and the positioning sleeve 112 a is sleeved on the outside of the reed assembly 7 .

The sensing component 20a includes a sensing body 21a, which is movably sleeved on the outside of the positioning sleeve 112a. The sensing body 21a includes a front sensing portion 212a, a rear sensing portion 213a and a normal sensing portion 211a. The sensing part 212a, the rear sensing part 213a and the normal sensing part 211a can all be attracted to the magnet 73, wherein the front sensing part 212a and the rear sensing part 213a are arranged on the outside of the breaking reed 72a, and the normal sensing part 211a is set On the outside of the passage reed 72b, the end of the induction body 21a is provided with a connecting portion 214a for connecting to the outside.

The casing 3a is sleeved on the outside of the sensing device 1a, and is clamped to fix the positioning sleeve 112a. The casing 3a forms a perforation 32 near the connecting portion 214a of the sensing body 21a for the connecting portion 214a to pass through. The elastic body 4 is disposed inside the housing 3a, and exerts an elastic force to push against the side of the induction body 21a inside the housing 3a, and the connecting component 5a is disposed on the side of the housing 3a away from the through hole 32.

When the fence detector is installed on the fence, one end is hooked to the fixed rod 61 of the fence by the connecting component 5a of the housing 3a, and the other end is connected to the steel fence of the fence by the connecting part 214a of the induction body 21a. Cable 62 is used to suspend the fence detector on the fence.

Please refer to FIG. 11 , when the fence detector is installed, the induction body 21a is subjected to two forces in opposite directions, one is the pulling force exerted by the connecting portion 214a, and the other is the elastic force of the elastic body 4. Two forces make the elastic body 4 statically balanced. At this time, the magnet 73 is attracted by the normal induction part 211a and moves towards the normal induction part 211a, and the magnet 73 pushes the passage reed 72b against the side fixed piece 74. , the access reed 72b is electrically connected to the fixed piece 74, which is a normal alert state.

Please refer to FIG. 12, when someone pulls the steel cable 62, it will pull through the connecting portion 214a and move the induction body 21a, and the magnet 73 is attracted by the front induction portion 212a and moves toward the front induction portion 212a. The magnet 73 pushes against the breaking reed 72a against the side fixing piece 74, and the breaking reed 72a is electrically connected to the fixing piece 74, and triggers an alarm.

Please refer to FIG. 13 , when someone cuts the steel cable 62, the induction body 21a is only pushed by the elastic body 4 to move, and the magnet 73 is attracted by the rear induction portion 213a and moves toward the rear induction portion 213a. The magnet 73 pushes against the breaking reed 72a against the side fixing piece 74, and the breaking reed 72a is electrically connected to the fixing piece 74, and triggers an alarm.

The existing fence detector is effective in sensing the alarm system, but in the sensing device 1a of the fence detector, the gap between the reed set 72 and the fixed piece 74 is extremely small, and the reed Group 72 is not a standard product on the market, and it is easy to cause poor contact or failure due to different quality during manufacture, which causes the reed group 72 to touch or have poor contact with the fixed piece 74 all the time, making the fence The detector cannot operate correctly. Secondly, due to the large number of components, the process of installing the fence detector is really difficult, and a lot of manpower and time are often wasted.

Contents of the invention

The main purpose of this utility model is to provide a fence detector and its sensing device. It is hoped to provide a fence detector that does not require additional processing during installation and is easy to assemble, and improves the existing sensing device. Poor contact or faults are likely to occur, so as to improve the correct action rate of the fence detector.

In order to achieve the above purpose, the induction device designed by the utility model includes:

A device body, which includes a non-magnetic fixed component, a control component, and a magnetic component, the fixed component forms an accommodating space inside, the control component is arranged inside the fixed component, and the control component includes a A switch, the magnetic component is movably arranged inside the two fixed components, the magnetic component can move within a limited range, and the switch can be turned on or off within its range of motion; and

An induction component, which is movably sleeved on the outside of the device body, the induction component includes a normal sensing part and a motion sensing part, the normal sensing part and the motion sensing part are arranged on both sides of the moving direction of the magnetic attraction component, And the normal state sensing part and the action sensing part can be attracted to the magnet inductively.

The fence detector designed by the utility model includes:

An induction device, which includes a device body and an induction component, the device body includes a fixed component of non-magnetic material, a control component, and a magnetic component, the fixed component forms an accommodating space inside, the control component Set inside the fixed component, the control component includes a switch, the magnetic component is movably arranged inside the two fixed components, the magnetic component can move within a limited range, and the switch can be turned on or off within its range of motion , the sensing component is movably sleeved on the outside of the device body, the sensing component includes a normal sensing part and a motion sensing part, the normal sensing part and the motion sensing part are arranged on both sides of the moving direction of the magnetic attraction component, and The normal sensing part and the action sensing part can be attracted to the magnet, and the sensing component is also provided with a connecting part;

A housing, which forms an accommodating space inside, the sensing device is installed inside the housing, wherein the fixing component is fastened to the housing, one end of the housing is provided with a joint part, the housing The other end of the body away from the assembly part is provided with a through hole for the connecting part of the induction component to pass through the inside of the housing;

an elastic body, installed inside the casing, and exerts an elastic force on the sensing element; and

A connecting component is combined with the connecting part of the casing.

The sensing device drives the oscillating body magnetically, and uses the oscillating body to directly press the actuation switch. Therefore, the fence detector including the sensing device uses the reed as compared with the known fence detector. Touching and electrically connecting the actuating mechanism of the fixed piece has the following advantages:

1. To improve the situation that the components are easily affected by the quality of processing due to the extremely small gap between the reed group and the fixed piece, resulting in poor contact or failure. The actuation accuracy of the sensing device is not easily reduced due to small errors in component processing, thereby providing a fence detector with reliable actuation and good induction.

2. When installing the reed group of the known sensing device, it needs to have an appropriate gap with the fixed plate. Because the gap is extremely small, precise corrections are often required when installing, but the sensing device of the present invention is assembled There is almost no need for correction afterwards, so that the fence detector of the present invention has the advantages of few components and easy assembly, saving manpower and time for installation.

The second purpose of this utility model is to further improve the shortcoming of being easily dismantled by lawless people with skill by using the connection assembly in the fence detector, which includes a positioning seat, a nut and a hanging ring, and the positioning seat is worn through On the assembling part of the housing, and clamped against the nut screwed from the end, the positioning seat includes a ring body, a locking part protruding vertically from the ring body toward the nut direction, and a body The piercing part protrudes vertically away from the nut, and a gap is formed between the piercing part and the ring body, and the end of the hanging ring bends two protrusions outwards, and the hanging ring can be positioned relative to the nut by the positioning seat Assemble the positioning seat in the other side direction of the hanging ring, press the two sides of the hanging ring to make the two protrusions pass through the piercing part, and rotate the hanging ring toward the nut to limit the gap.

As can be seen from the foregoing, the fence detector of the utility model is designed by connecting components so that the hanging ring is limited to the gap after the fence detector is installed, and will not be disassembled by illegal persons in a special way, so that The situation that the fence detector is not activated makes the protection of the fence detector more reliable and effective.

Description of drawings

Figure 1 is a three-dimensional exploded schematic diagram of a preferred embodiment of the sensing device of the present invention;

Figure 2 is a three-dimensional exploded schematic diagram of a preferred embodiment of the fence detector of the present invention;

Fig. 3 is a three-dimensional combination schematic diagram of a preferred embodiment of the fence detector of the present invention;

Fig. 4 is a schematic cross-sectional view of the fence detector shown in Fig. 3;

Fig. 5 is a schematic diagram of a preferred embodiment of the fence detector of the present invention when it is installed on the fence;

Fig. 6 is a schematic cross-sectional view of the induction device of the present invention in a normal state;

Fig. 7 is a schematic cross-sectional view of the induction device of the present invention when the steel cable is pulled;

Fig. 8 is a schematic cross-sectional view of the induction device of the present invention when the steel cable is cut;

Fig. 9 is a three-dimensional schematic diagram of an existing fence detector;

Fig. 10 is a partial sectional schematic diagram of an existing fence detector;

Fig. 11 is a partial cross-sectional schematic diagram of an existing fence detector sensing device in a normal state;

Fig. 12 is a schematic partial cross-sectional view of the sensing device of the existing fence detector when the steel cable is pulled; and

Fig. 13 is a schematic partial cross-sectional view of the existing fence detector sensing device when the steel cable is cut.

Detailed ways

Please refer to FIG. 1 , which is a preferred embodiment of the sensing device of the present invention. The sensing device 1 includes a device body 10 and a sensing component 20 .

The device body 10 includes a non-magnetic fixing component 11 , a control component 12 , and a magnetic component 13 .

The fixing assembly 11 includes two fixing bases 111 and a positioning sleeve 112, the two fixing bases 111 can be combined with each other and form an accommodating space inside, the outside of the two fixing bases 111 forms a joint protrusion 1111, the positioning sleeve 112 Sleeved on the outside of the two fixing seats 111, a coupling groove 1121 is formed on the inside of the positioning sleeve 112, and the coupling groove 1121 is engaged with the coupling convex strip 1111 of the two fixing seats 111. The positioning sleeve 112 is provided with a Card edge 1122.

The control assembly 12 is located inside the two fixing seats 111, and the control assembly 12 is provided with a switch 121 to control whether the device is activated or not. In this embodiment, the switch 121 is a button, and when the button is pressed It is normal when it is released, and it is active when it is released. The control component 12 may further include a light emitting diode 122.

The magnetic attraction assembly 13 is located inside the two fixed seats 111, and includes a swing body 131, a magnet box 132, and a magnet 133. 131 within the swing range, the button of the control assembly 12 can be pressed or released, the other end of the swing body 131 can further form a tongue 1311, and the magnet box 132 is concavely provided with a receiving hole 1321 from its top surface, the magnet Accommodated in the accommodating hole 1321, a slot 1322 is respectively provided on two opposite side walls of the entrance opening of the magnet box 132, and the tongue 1311 of the swinging body 131 can pass through the two slots 1322 to assemble the magnet box 132. Magnet box 132, and the magnet 133 is limited and accommodated in the magnet box 132.

The induction component 20 is sleeved on the outside of the device body 10, the induction component 20 includes an induction body 21, and can be further provided with a movable sleeve 22, please refer to FIG. 2, the induction body 21 and the positioning sleeve The cylinder 112 can only slide along the positioning sleeve 112 in a straight line. The sensing body 21 includes a motion sensing part and a normal sensing part 211. The motion sensing part and the normal sensing part 211 are arranged on the swinging body 131 opposite The two sides of the swinging direction can be attracted to the magnet 133. In this embodiment, the motion sensing part includes a front sensing part 212 and a rear sensing part 213, and the front sensing part 212 and the rear sensing part 213 Located on the side of the oscillating body 131 away from the switch 121, the normal sensing part 211 is located between the front sensing part 212 and the rear sensing part 213, and is located on the side of the oscillating body 131 close to the switch 121. 21 The closed end of the proximal positioning sleeve 112 can further include a connecting portion 214, please refer to FIG. Against the flange 221 , a through hole is formed at the closed end of the movable sleeve 22 for the connecting portion 214 of the induction body 21 to pass through.

Please refer to Figures 2-4, which are a preferred embodiment of the fence detector of the present invention. The fence detector includes the sensing device 1, a housing 3, an elastic body 4 and a connecting component 5, The sensing device is as described above, and no more details are given here.

The casing 3 can be assembled by two covers 30, and an accommodating space is formed inside it to house the sensing device 1 and the elastic body 4. A locking part 31 is formed inside the casing 3, and the locking part 31 is formed inside the casing 3. The part 31 engages the card edge 1122 of the positioning sleeve 112 to fix the device body 10, and the bottom surface of the casing 3 near the end of the connecting part 214 forms a perforation 32 for the connecting part 214 of the induction body 21 to pass through the casing 3 The outer wall of the other end of the housing 3 has a connecting portion 33, and the connecting portion 33 can be provided with threads. There is a circuit hole 34 , 1112 for the circuit of the control unit 12 to pass through and connect to the outside. The side wall of the housing 3 can further form a window 35 at the place corresponding to the LED 122 .

The elastic body 4 is disposed inside the casing 3 , one end of the elastic body 4 abuts against the bottom surface of the casing 3 near the through hole 32 , and the other end of the elastic body 4 abuts against the locking flange of the movable sleeve 22 221 , apply an elastic force to push against the movable sleeve 22 and the induction body 21 on the engaging portion 31 .

The connection assembly 5 is assembled on the assembly portion 33 of the casing 3, the connection assembly 5 includes a positioning seat 51, a nut 52 and a hanging ring 53, and the positioning seat 51 is sleeved on the assembly of the casing 3. connecting portion 33, and use the nut 52 to lock the thread on the connecting portion 33, and limit the positioning seat 51 to the connecting portion 33, the connecting portion 33 includes a ring body 510, and the ring body 510 has two There are two engaging parts 511 protruding toward the direction of the nut 52 on the side, to hold the nut 52 in place, and the two sides of the ring body 510 are provided with two connecting parts protruding away from the direction of the nut 52 512, a gap 513 is formed between the passing portion 512 and the ring body 510, the hanging ring 53 can be a U-shaped body, and two convex columns 531 are vertically bent outward at the end of the hanging ring 53, the hanging ring 53 can be From the side of the positioning seat 51 away from the nut 52, press the hanging ring 53 so that the two protrusions 531 are stretched and assembled to the connecting portion 512 of the ring body 510, and the hanging ring 53 is rotated to lock it against the limit. Located in the gap 513 .

Please refer to Fig. 5, when the fence detector with the sensing device 1 of the present invention is installed, one end uses the connection assembly 5 on the joint part 33 to hang the external fixing rod 61, and the other end uses the sensing body 21 The upper connecting portion 214 connects the steel cable 62 of the fence, and the steel cable 62 is tensioned to an appropriate tension to suspend and fix the fence detector on the fence.

Please refer to FIG. 6 , when the installation is completed, the induction body 21 is subjected to two forces in opposite directions, one is the pushing force exerted by the elastic body 4 on the induction body 21 toward the card edge 1122 through the movable sleeve 22, and the other is One is the pulling force of the steel cable 62 pulling the induction body 21, and the forces in these two opposite directions reach a static force balance, so that the normal induction part 211 of the induction body 21 stops at the outer side corresponding to the magnet 133, and the normal induction part 211 and the magnet 133 attract each other, and the magnet case 132 drives the oscillating body 131 to swing and press the switch 121 of the control assembly 12, which is a normal alert state.

Please refer to Fig. 7, when someone pulls the fence sensor or its connected steel cable 62, the induction body 21 moves away from the card edge 1122, the magnet 133 is attracted by the front induction part 212, and the magnet box 132 drives The oscillating body 131 is disengaged to release the switch 121 , and the control unit 12 feeds back a signal to the external alarm system to activate the alarm.

Please refer to FIG. 8 , when someone cuts the steel cable 62 connected to the fence detector so that the tension of the steel cable 62 disappears, the inductive body 21 is only pushed against by the elastic force of the elastic body 4 and moves toward the card edge 1122. Moving, the magnet 133 is attracted by the rear sensing part 213 to drive the swing body 131 away from the switch 121, and the control component 12 also feeds back a signal to the external alarm system to trigger the alarm.

It can be known from the above description that the fence detector with the sensing device 1 of the present invention uses the swing body 131 to swing and press the actuation switch 121, the sensing effect is direct and effective, and the reed inside the existing sensing device is improved. The gap between the group and the fixed piece is extremely small, and it is easy to fail to operate correctly due to the uneven processing quality of the internal components, thereby improving the sensing yield of the sensing device. Secondly, it also improves the shortcoming of difficult assembly of the reed sensing component and provides a A sensing device with few components, easy assembly and good sensing effect. Secondly, through the design of the connecting component 5, the hanging ring 53 is limited to the notch 513 and can only be removed after being rotated away from the notch 513. It can avoid the situation that the unlawful person intends to take off the hanging ring 53 in a non-destructive way to sneak in or escape, but the alarm is not activated, so that the protection of the fence detector is more reliable and effective.

Claims (10)

1. An induction device, characterized in that it comprises: A device body, which includes a non-magnetic fixed component, a control component, and a magnetic component, the fixed component forms an accommodating space inside, the control component is arranged inside the fixed component, and the control component includes a A switch, the magnetic component is movably arranged inside the two fixed components, the magnetic component can move within a limited range, and the switch can be turned on or off within its range of motion; and An induction component, which is movably sleeved on the outside of the device body, the induction component includes a normal sensing part and a motion sensing part, the normal sensing part and the motion sensing part are arranged on both sides of the moving direction of the magnetic attraction component, And the normal state sensing part and the action sensing part can be attracted to the magnet inductively. 2. The sensing device according to claim 1, wherein the magnetic attraction assembly comprises a swing body, a magnet box and a magnet, one end of the swing body is pivotally connected to the fixed assembly, and the other end of the swing body One end forms a tongue, and the magnet box forms an accommodating hole, and a slot is provided on two opposite side walls of the magnet box near the opening end of the accommodating hole, and the magnet is arranged in the accommodating hole of the magnet box, The tongue of the oscillating body can pass through the two slots of the magnet box and limit the magnet in the accommodating hole. 3. The sensing device according to claim 1 or 2, wherein the fixing assembly includes a positioning sleeve and two fixing seats, a coupling groove is formed inside the positioning sleeve, and the two fixing seats can be combined with each other and It is arranged inside the positioning sleeve, and a combining convex line is formed on the outside of the two fixing seats, the combining convex line is locked in the combining groove, and the two fixing seats are locked inside the positioning sleeve. 4. A fence detector, characterized in that comprising: An induction device, which includes a device body and an induction component, the device body includes a fixed component of non-magnetic material, a control component, and a magnetic component, the fixed component forms an accommodating space inside, the control component Set inside the fixed component, the control component includes a switch, the magnetic component is movably arranged inside the two fixed components, the magnetic component can move within a limited range, and the switch can be turned on or off within its range of motion , the sensing component is movably sleeved on the outside of the device body, the sensing component includes a normal sensing part and a motion sensing part, the normal sensing part and the motion sensing part are arranged on both sides of the moving direction of the magnetic attraction component, and The normal sensing part and the action sensing part can be attracted to the magnet, and the sensing component is also provided with a connecting part; A housing, which forms an accommodating space inside, the sensing device is installed inside the housing, wherein the fixing component is fastened to the housing, one end of the housing is provided with a joint part, the housing The other end of the body away from the assembly part is provided with a through hole for the connecting part of the induction component to pass through the inside of the housing; an elastic body, installed inside the casing, and exerts an elastic force on the sensing element; and A connecting component is combined with the connecting part of the casing. 5. The fence detector according to claim 4, characterized in that: the connection assembly comprises a positioning seat, a nut and a hanging ring, the positioning seat passes through the assembly part of the housing, and The nut is screwed from the end, and the positioning seat includes a ring body, a locking part vertically protruding from the ring body toward the nut direction, and a through hole vertically protruding from the body toward the direction away from the nut. There is a connecting part, and a gap is formed between the passing part and the ring body, and the end of the hanging ring bends two protrusions outwards, and the hanging ring can be assembled with the positioning seat by the positioning seat relative to the other side of the nut , by pressing the two sides of the hanging ring to make the two protrusions pass through the piercing part, and the hanging ring is rotated toward the nut to be limited to the notch. 6. The fence detector according to claim 4 or 5, wherein the magnetic attraction assembly comprises a swing body, a magnet box and a magnet, and one end of the swing body is pivotally connected to the fixed assembly, The other end of the oscillating body forms a tongue, and the magnet case forms a receiving hole, and a slot is respectively arranged on two opposite side walls near the open end of the receiving hole of the magnet case, and the magnet is arranged in the magnet case. In the accommodating hole, the tongue of the oscillating body can pass through the two slots of the magnet box and restrict the magnet in the accommodating hole. 7. The fence detector according to claim 4 or 5, characterized in that: the fixing assembly includes a positioning sleeve and two fixing seats, a coupling groove is formed inside the positioning sleeve, and the two fixing seats can be The two fixed seats are combined with each other and arranged inside the positioning sleeve, and a combined convex line is formed on the outside of the two fixing seats. 8. The fence detector according to claim 6, characterized in that: the fixing assembly comprises a positioning sleeve and two fixing seats, a coupling groove is formed inside the positioning sleeve, and the two fixing seats can be combined with each other And it is arranged inside the positioning sleeve, and a combining convex line is formed on the outside of the two fixing seats, the combining convex line is locked in the combining groove, and the two fixing seats are locked inside the positioning sleeve. 9. The fence detector according to claim 4 or 5, wherein the control unit includes a light emitting diode, and a window is provided on the side wall of the casing corresponding to the light emitting diode. 10. The fence detector as claimed in claim 6, wherein the control unit comprises a light emitting diode, and a window is provided on the side wall of the casing corresponding to the light emitting diode.

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