JP7841383B2 - Portable Restraint Net Deployment Device - Google Patents

Description

This disclosure relates to a portable restraint net deployment device.

A portable restraint net deployment device is a device that can instantly deploy a restraint net using gas pressure. For example, if a crime is foreseen by a certain individual, the restraint net can be used to prevent the crime from occurring. Furthermore, if a target needs to be restrained or captured, the net can be entangled around the target to slow down their escape time. The above are just examples of the uses of a portable restraint net deployment device; its applications can be determined at the operator's discretion.

Prior art relating to portable restraint net deployment devices can be found in, for example, Patent Documents 1 and 2.

Patent Document 1 discloses a device configured such that the ejection circuit closes when a switch plate is pulled out from the grip end, and the restraint net is deployed by the gas pressure generated by the ejection circuit. In the device disclosed in Patent Document 1, the restraint net deployer that ejects the restraint net is integrated with the operating unit. Therefore, once the restraint net has been ejected, it is not easy to replace the restraint net deployer. Furthermore, the switch plate, which acts as the trigger for ejecting the restraint net, cannot be returned to its original position once it has been pulled out from the grip end. In other words, the device disclosed in Patent Document 1 is not designed for repeated use.

Patent Document 2 discloses a device configured to detachably connect a restraint net ejection unit, which ejects a restraint net, and an operating unit, which activates the restraint net ejection unit, via an adapter. In the device disclosed in Patent Document 2, the restraint net ejection unit is a replaceable cartridge. Furthermore, a rocker switch is used as the activation push button for activating the restraint net ejection unit. In other words, the device disclosed in Patent Document 2 is designed for repeated use.

Japanese Patent Publication No. 2010-133685 Republished Patent Publication No. 2007/046194

However, the activation push button in the device disclosed in Patent Document 2, although reusable, may be unintentionally pressed when touched by a finger. Therefore, in the device disclosed in Patent Document 2, the activation push button is covered with a guard cover, and a sealing sticker is affixed to the guard cover to prevent accidental pressing.

As described above, strictly sealing the activation button might prevent it from being pressed when not in use. However, on the other hand, it could prevent the device from being activated instantly in an emergency. This could reduce the usefulness of the portable restraint net deployment device.

This invention has been made in view of the above-mentioned problems, and aims to provide a portable restraint net deployment device that can be used repeatedly, suppresses erroneous operation, and can be operated instantaneously.

This invention provides a portable restraint net deployment device for achieving the above objective.

The portable restraint net deployment device according to the present invention comprises a device body to which a cartridge is detachably attached. The cartridge integrally houses a restraint net and a nozzle for ejecting the restraint net. The device body is provided with a circuit and a momentary switch. The circuit is configured to activate the nozzle when power is supplied while the cartridge is attached to the device body. The momentary switch is configured to energize the circuit upon displacement of its operating part from the off position to the on position.

The portable restraint net deployment device according to the present invention comprises an operating tool for operating a momentary switch and a spring device. The operating tool is configured to be pulled out from the inside to the outside of the device body, and its range of motion in the pulling direction is mechanically restricted to a range from a first position to a second position outside the first position. The operating tool is configured to hold the operating part of the momentary switch in the off position at the first position, and to position the operating part of the momentary switch in the on position at the second position. The spring device is provided on the device body. The spring device is configured to apply a spring force to the operating tool in the direction from the second position to the first position.

The portable restraint net deployment device according to the present invention is configured as described above. According to the portable restraint net deployment device of the present invention, by pulling out the operating tool, the operating part of the momentary switch is displaced from the off position to the on position, energizing the circuit and activating the ejector, which ejects the restraint net from within the cartridge. In other words, the portable restraint net deployment device can be activated instantaneously with a single action of pulling out the operating tool. Furthermore, the act of pulling out the operating tool is an intentional act and therefore less prone to erroneous operation. Thus, the above configuration suppresses erroneous operation and allows for instantaneous operation of the portable restraint net deployment device.

Furthermore, according to the portable restraint net deployment device of the present invention, the operating tool, once extended to the second position, is returned to the first position by the spring force applied by the spring device. Because the operating tool is provided with this automatic return function, the momentary switch, once activated, can be used repeatedly. Also, according to the portable restraint net deployment device of the present invention, once the operating tool is extended and the restraint net is ejected from the cartridge, the restraint net can be ejected again by replacing the cartridge. In other words, the above configuration allows for repeated use of the portable restraint net deployment device.

In the portable restraint net deployment device according to the present invention, the momentary switch may be configured as a normally-on switch. In this case, the operating part may be configured to be positioned in the off position by restraint from the operating tool when the operating tool is in the first position, and to return to the on position when the operating tool is released from restraint from the operating tool when the operating tool is in the second position. Furthermore, the operating tool may be provided with an inclined part that contacts the operating part when moving from the second position to the first position, gradually displacing the operating part from the on position to the off position. With such a configuration, when the operating tool is returned to the first position by the spring force applied from the spring device, the operating part can be reliably returned to the off position by being displaced by the inclined part.

In the portable restraint net deployment device according to the present invention, the operating tool may be configured such that, when pulled out from the first position to the second position by pulling in the pulling direction, it automatically returns from the second position to the third position (just before the first position) by the spring force of a spring device when the pulling in the pulling direction is released, and returns from the third position to the first position by pushing in the opposite direction to the pulling direction. In other words, releasing the hand that was pulling the operating tool causes the spring force to return the operating tool from the second position to the third position, and pushing it by hand returns the operating tool from the third position to the first position. By requiring the operator to take two actions in this way, the operator can be made aware of the need to return the operating tool to its original position and turn off the momentary switch. Furthermore, the operating part may be configured to be in the off position when the operating tool is in the third position. With this configuration, even if the operator forgets to return the operating tool from the third position to the first position, the momentary switch can still be turned off.

In the portable restraint net deployment device according to the present invention, the device body may comprise a cylindrical storage hole opening outward and having an axis parallel to the pulling direction, and an annular groove formed on the inner circumferential surface of the storage hole. The operating tool may comprise a cylindrical head that slides within the storage hole and an O-ring fitted to the circumferential surface of the head. The position of the operating tool when the O-ring is fitted into the annular groove may be defined as the first position, the position when the O-ring is protruding from the storage hole as the second position, and the position when the O-ring is caught at the entrance of the storage hole as the third position. With this configuration, when pulling the operating tool from the first position to the second position, a certain force is required from the operator, thus reliably preventing erroneous operation of the operating tool. Furthermore, when pushing the operating tool back from the third position to the first position, a certain force is required from the operator, and a clicking sensation is obtained when the O-ring engages with the annular groove. This allows the operator to be informed that the operating tool has been reliably returned to its original position.

As described above, the portable restraint net deployment device according to the present invention allows for repeated use, suppresses erroneous operation, and can be activated instantaneously.

This is an external view of a portable restraint net deployment device according to an embodiment of the present invention. Figure 1 is an exploded view of the main body of the portable restraint net deployment device. Figure 1 is an enlarged view of the circuit unit of the portable restraint net deployment device shown. Figure 1 is a longitudinal cross-sectional view of the portable restraint net deployment device. This is a longitudinal cross-sectional view showing the off state of the operating mechanism of the portable restraint net deployment device shown in Figure 1. Figure 1 is a longitudinal cross-sectional view showing the ON state of the operating mechanism of the portable restraint net deployment device. This figure shows the operating procedure of the portable restraint net deployment device shown in Figure 1.

1. Overview of the Portable Restraint Net Deployment Device First, an overview of the portable restraint net deployment device 2 according to an embodiment of the present invention will be described with reference to Figure 1. Figure 1 is an external view of the portable restraint net deployment device 2.

The portable restraint net deployment device 2 consists of a device body 4 and a cartridge 6 that is detachably attached to the device body 4. The device body 4 consists of an adapter 20 to which the cartridge 6 is attached, and a grip 40 integrated with the adapter 20. The grip 40 has a cylindrical shape. The grip 40 is the part that the operator holds when using the portable restraint net deployment device 2, and is thick enough to be held with one hand. The portable restraint net deployment device 2 is small and light enough for the operator to carry, and the operator can use it by holding the grip 40 with one hand.

The cartridge 6 has a storage container 60 that has a shape combining a cylinder and a cone. The storage container 60 houses the restraint net. A plug, not visible in the external view, extends from the storage container 60 and is inserted into the adapter 20. A nozzle is provided inside the plug to eject the restraint net using gas pressure. The cartridge 6 is attached to the adapter 20 such that its axis lies on the axis of the grip 40.

Cartridge 6 is for single use only. However, by removing the old cartridge 6 from which the restraint net has been ejected from the adapter 20 and attaching a new cartridge 6 to the adapter 20, the portable restraint net deployment device 2 can be used repeatedly. Furthermore, the device body 4 is equipped with a circuit unit that electrically activates the cartridge 6. In particular, the grip 40 is equipped with an operating mechanism that activates the circuit unit. The operating mechanism can be operated by removing the end cap 45 attached to the grip end 44. The configuration of the circuit unit and operating mechanism will be described later, but both are designed for repeated use.

2. Details of the Portable Restraint Net Deployment Device Next, the details of the portable restraint net deployment device 2 will be described with reference to Figures 2 to 4. Figure 2 is an exploded view of the main body 4 of the portable restraint net deployment device 2. The exploded view shows the adapter 20 and grip 40 that make up the main body 4, disassembled down to the component level.

First, the components constituting the adapter 20 and the components provided on the adapter 20 will be described. The adapter 20 is divided into a left block 21L and a right block 21R. By joining the left and right blocks 21L and 21R, a mounting hole is formed into which the plug 62 of the cartridge 6 is inserted. Inside the adapter 20, that is, between the left block 21L and the right block 21R, the tip of the grip core 41 (described later), the contact plate 24, and the compression spring 25 are housed. The left and right blocks 21L and 21R are fixed to each other by multiple screws, with waterproof gaskets 22A, 22B, and 22C sandwiched between their mating surfaces. Furthermore, an annular gasket 23 is attached to the entrance of the mounting hole to fill the gap between the adapter 20 and the cartridge 6 for waterproofing.

The left and right blocks 21L and 21R clamp and secure the tip of the grip core 41. An O-ring 26 for waterproofing is fitted to the portion of the grip core 41 sandwiched between the left and right blocks 21L and 21R. The contact plate 24 is a metal plate that electrically connects the plug 62 and the circuit unit 30. The contact plate 24 is mounted axially movable at the back of the mounting hole into which the plug 62 is inserted. The compression spring 25 is sandwiched between the wall surface 21a of block 21R and the contact plate 24, and is positioned so that its expansion and contraction direction coincides with the axial direction. The compression spring 25 presses the contact plate 24 against the plug 62, ensuring a secure electrical connection between the two.

The electronic circuit 31 constituting the circuit unit 30 is provided on the adapter 20. The electronic circuit 31 is connected to the contact plate 24 by a connector 33. The power source for the circuit unit 30 is a battery 38. Preferably, the battery 38 is a lithium battery. The battery 38 is housed in a battery box 32 directly attached to the electronic circuit 31. The battery box 32 is positioned on top of the adapter 20 for easy installation and removal of the battery 38, and is covered by a battery cover 27 along with the battery 38. A cushion 29 is placed between the battery 38 and the battery cover 27 to prevent the battery 38 from coming loose. The battery cover 27 is secured to the left and right blocks 21L and 21R by multiple screws, with a waterproof gasket 28 in between.

Next, the components constituting the grip 40 and the components provided on the grip 40 will be described. The aforementioned grip core 41 is the core material of the grip 40. The grip core 41 is a hollow cylinder, and a portion of its side wall is a removable lid 42. A grip cover 43 for waterproofing is placed over the grip core 41. The grip cover 43 is cylindrical and made of a material that prevents slipping when the operator grips the grip 40.

An annular grip end 44 is fixed to the end of the grip core 41. The grip end 44 has a larger diameter than the grip core 41, preventing the grip 40 from slipping from the operator's hand. Furthermore, the grip end 44 sandwiches the grip cover 43 between itself and the circumferential surface of the grip core 41, preventing the grip cover 43 from shifting.

An end cap 45 is attached to the grip end 44. The end cap 45 is a safety device to protect the operating mechanism 50, located within the grip core 41, from accidental operation. The end cap 45 is removed from the grip end 44 when using the portable restraint net deployment device 2, and reattached to the grip end 44 after use. A cutter 47 can also be attached to the end cap 45 using double-sided tape 46. The cutter 47 can be used to cut the restraint net when releasing a target captured by the net.

The grip core 41 contains a microswitch 35, which constitutes the circuit unit 30, and an operating mechanism 50. The operating mechanism 50 is the mechanism that operates the microswitch 35. Details of the configuration and mechanism of the operating mechanism 50 will be described later; here, we will describe the components of the operating mechanism 50 housed in the grip core 41.

The operating mechanism 50 includes a switch plate 51 as an operating tool for turning the microswitch 35 on and off. A ball chain 55 is attached to the head 51a of the switch plate 51 for pulling the switch plate 51 outwards from inside the grip core 41. The head 51a of the switch plate 51 is cylindrical, and an O-ring 54 is fitted to the circumferential surface of the cylindrical head 51a. The operating mechanism 50 also includes a pin 53, a fixture 56, and a tension spring 52. The pin 53 is attached to the switch plate 51 and functions as a stopper. The fixture 56 is fixed in a fixed position within the grip core 41. The tension spring 52 is stretched between the tip of the switch plate 51 and the fixture 56.

Figure 3 is an enlarged view of the circuit unit 30. The circuit unit 30 includes an electronic circuit 31 to which a battery box 32 is directly attached, a connector 33, and a microswitch 35. The electronic circuit 31 and the connector 33 are electrically connected by two lead wires 34. The electronic circuit 31 and the microswitch 35 are electrically connected by two lead wires 37.

The electronic circuit 31 is configured to apply the voltage from the battery housed in the battery box 32 to the connector 33 when the microswitch 35 is turned on. The electronic circuit 31 also includes a capacitor 31a to absorb minor electromagnetic waves as an EMP countermeasure. The microswitch 35 is a normallyon momentary switch. The pin 36, which acts as the operating part, pops out when not subjected to external force and is pushed back into the microswitch 35 when external force is applied. When the external force is removed, the pin 36 is returned to its original position by a spring inside the microswitch 35. While the pin 36 is popped out, the microswitch 35 is in the ON state, and while the pin 36 is pressed, the microswitch 35 is in the OFF state.

Next, the configuration of the portable restraint net deployment device 2 in its assembled state will be explained using Figure 4. Figure 4 is a longitudinal cross-sectional view of the portable restraint net deployment device 2. Figure 4 shows the longitudinal cross-sections of the device body 4 and the cartridge 6, respectively.

The outer shell of the cartridge 6 consists of a storage container 60 and a plug 62 extending from the storage container 60. The storage container 60 houses a restraint net 65. Multiple weights 66 and multiple pull cords 67 are attached to the restraint net 65, and these are stored together in the storage container 60. Inside the plug 62 is a ejector 64 that ejects the restraint net 65 using gas pressure. The ejector 64 has a pyrotechnic igniter. When current is applied to a contact 63 located at the tip of the plug 62, the pyrotechnic igniter ignites and generates gas. When the ejector 64 is activated, the rapidly increasing gas pressure inside the storage container 60 causes the lid 61 to detach, and the restraint net 65, along with the weights 66 and pull cords 67, is deployed forward.

The adapter 20 into which the cartridge 6 is mounted is attached to the tip of the grip 40. A contact plate 24 is provided at the deepest part of the mounting hole 20a into which the plug 62 of the cartridge 6 is inserted. A compression spring 25 is sandwiched between the contact plate 24 and the wall surface 21a of the block 21R. When the plug 62 is inserted into the mounting hole 20a, the contact plate 24 is pressed against the contact 63 at the tip of the plug 62 by the compression spring 25.

The contact plate 24 is electrically connected to the electronic circuit 31 via the connector 33 and lead wires 34. The electronic circuit 31 is electrically connected to a microswitch 35 located within the grip core 41 via another lead wire 37. When the microswitch 35 is in the off position, the electronic circuit 31 cuts off the current between the battery 38 and the contact plate 24. When the microswitch 35 is in the on position, the electronic circuit 31 energizes the battery 38 and the contact plate 24.

The operating mechanism 50 for operating the microswitch 35 is located within the grip core 41. The switch plate 51, which constitutes the operating mechanism 50, is positioned within the grip core 41 so as to be displaceable only in the axial direction. The movement of the switch plate 51 in the up, down, left, and right directions is restricted by the grip core 41 and the cover 42. The axial range of motion of the switch plate 51 overlaps with the pin 36 of the microswitch 35 (not shown in Figure 4). Therefore, as will be described in detail later, by displacing the switch plate 51 in the axial direction, the pin 36 can be pushed into the microswitch 35 or made to pop out of the microswitch 35.

A ball chain 55 is attached to the head 51a of the switch plate 51. A chain storage section 26g for housing the ball chain 55 is formed at the end of the grip core 41. When the portable restraint net deployment device 2 is not in use, the ball chain 55 is stored in the chain storage section 26g, and an end cap 45, acting as a safety device, is attached in this state. When the portable restraint net deployment device 2 is in use, the end cap 45 is removed and the ball chain 55 is taken out of the chain storage section 26g. By pulling the removed ball chain 55 by hand, the microswitch 35 is turned on by the operating mechanism 50.

The tension spring 52 is positioned so that its pulling direction coincides with the displacement direction of the switch plate 51. When the ball chain 55 is pulled, the tension spring 52 generates a spring force between the fastener 56 and the switch plate 51, pulling the switch plate 51 back towards the fastener 56. In other words, the tension spring 52, together with the fastener 56, functions as a spring device that applies a spring force to the switch plate 51 in a direction toward the inside of the grip core 41.

3. Details of the Operating Mechanism Next, the details of the operating mechanism 50 will be described with reference to Figures 5 and 6. Figure 5 is a longitudinal cross-sectional view showing the operating mechanism 50 in the off state. Figure 6 is a longitudinal cross-sectional view showing the operating mechanism 50 in the on state.

The off state shown in Figure 5 represents the normal state of the operating mechanism 50. The rear end of the grip core 41 is provided with a cylindrical storage hole 41a that opens outward and has an axis parallel to the direction in which the switch plate 51 is pulled out. The switch plate 51 penetrates the back wall of the storage hole 41a, with its tip protruding into the interior of the grip core 41. The switch plate 51 has a cylindrical head 51a. The diameter of the head 51a of the switch plate 51 is slightly smaller than the diameter of the storage hole 41a, and the head 51a of the switch plate 51 is slidably housed in the storage hole 41a.

In the off state, the switch plate 51 is retracted into the grip core 41 by the spring force of the tension spring 52. However, the head 51a of the switch plate 51 abuts against the wall surface 41d formed in the grip core 41, limiting the switch plate 51's entry into the grip core 41. The position of the switch plate 51 shown in Figure 5 is the position where the switch plate 51 is most deeply inserted into the grip core 41. Hereafter, this position of the switch plate 51 will be referred to as the first position.

When the switch plate 51 is in the first position, the pins 36 of the microswitch 35 are pressed into the microswitch 35 by the switch plate 51. The position of the pins 36 is the off position when pressed in, and the position when they are protruding from the microswitch 35 is the on position. Therefore, in the first position of the switch plate 51, the microswitch 35 is held in the off state.

An annular groove 41b is formed on the inner circumferential surface of the storage hole 41a in which the head 51a of the switch plate 51 is housed. An O-ring 54 fitted onto the head 51a fits into the annular groove 41b. The positional relationship between the annular groove 41b and the O-ring 54 is set such that the O-ring 54 fits into the annular groove 41b when the switch plate 51 is in its first position. The outer diameter of the O-ring 54 is larger than the inner diameter of the storage hole 41a. However, the O-ring 54 is made of an elastically deformable material, such as rubber.

The O-ring 54 prevents water from entering the grip core 41 through the storage hole 41a. Furthermore, the O-ring 54's engagement with the annular groove 41b creates resistance when the switch plate 51 is pulled out from the grip core 41. To pull out the switch plate 51, the operator must deliberately pull the ball chain 55 with a force exceeding this resistance. This acts as a deterrent, preventing the switch plate 51 from being accidentally pulled out.

The ON state of the operating mechanism 50 shown in Figure 6 is when the switch plate 51 is pulled out from the grip core 41. A pin 53, acting as a stopper, is fixed to the switch plate 51. This pin 53 contacts the wall surface 41e formed on the grip core 41, preventing the switch plate 51 from coming out of the grip core 41. The position of the switch plate 51 shown in Figure 6 is the position when the switch plate 51 is pulled out to its maximum extent from the grip core 41. Hereafter, this position of the switch plate 51 will be referred to as the second position. When the switch plate 51 is in the second position, the O-ring 54 fitted to the head 51a protrudes outward from the entrance 41c of the storage hole 41a.

At the second position of the switch plate 51, the tension spring 52 is fully extended. Therefore, a strong tensile force acts on the ball chain 55 that pulls the switch plate 51. The spring constant of the tension spring 52 is set to a magnitude sufficient to reliably displace the switch plate 51 to the second position when the weakest person among those assumed to be operating the device pulls the ball chain 55.

A slanted portion 51b is formed at the tip of the switch plate 51, that is, the end where the tension spring 52 is attached. The slanted portion 51b is shaped so that the gap between it and the microswitch 35 gradually widens towards the tip of the switch plate 51. Therefore, when the ball chain 55 is pulled to extend the switch plate 51, the pin 36, which was being held down by the switch plate 51, gradually protrudes. Finally, when the switch plate 51 reaches the second position, or just before, the pin 36 pops out from the microswitch 35 and takes the ON position. Thus, in the second position of the switch plate 51, the microswitch 35 is in the ON state.

4. Operating Procedure of the Operating Mechanism Next, the operating procedure of the operating mechanism 50 for operating the portable restraint net deployment device 2 will be described with reference to Figure 7. In the initial state of the operating mechanism 50, the switch plate 51 is in the first position. In this state, the pin 36 is pushed into the microswitch 35 by the switch plate 51, and the microswitch 35 is kept in the off state. To operate the portable restraint net deployment device 2, the operator pulls the ball chain 55 with their hand 100.

By pulling the ball chain 55, the switch plate 51 is pulled out from the grip core 41. The switch plate 51 then stops at the position where the pin 53 strikes the wall surface 41e, i.e., the second position. During the movement of the switch plate 51 from the first position to the second position, the position where the pin 36 strikes shifts from the bottom surface of the switch plate 51 to the inclined portion 51b, and the pin 36 pops out from the microswitch 35. When the pin 36 pops out to the ON position, the microswitch 35 turns ON, and the portable restraint net deployment device 2 activates.

The operator can instantly activate the portable restraint net deployment device 2 with a single action: pulling the ball chain 55 to extend the switch plate 51. Furthermore, extending the switch plate 51 is an intentional action, making it less prone to erroneous operation. In other words, the configuration of the operating mechanism 50 according to this embodiment suppresses erroneous operation and allows for instantaneous activation of the portable restraint net deployment device 2.

After activating the portable restraint net deployment device 2 and deploying the restraint net, the operator releases their hand 100 from pulling the ball chain 55. As the pulling force on the switch plate 51 disappears, the switch plate 51 is pulled into the grip core 41 by the spring force of the tension spring 52. However, since the outer diameter of the O-ring 54 is larger than the inner diameter of the storage hole 41a, the O-ring 54 catches on the entrance 41c of the storage hole 41a. The position of the switch plate 51 when the O-ring 54 catches on the entrance 41c of the storage hole 41a is called the third position.

As the switch plate 51 moves from the second position to the third position due to the spring force applied by the tension spring 52, the inclined portion 51b of the switch plate 51 contacts the pin 36, gradually displacing the pin 36 from the ON position to the OFF position. This ensures that the pin 36 is reliably returned to the OFF position. When the switch plate 51 is in the third position, the pin 36 is in the OFF position, and the microswitch 35 is in the OFF state.

Next, the operator pushes down the head 51a of the switch plate 51, which is in the third position, with their hand 100. The pushed-down switch plate 51 returns to the first position. In other words, by releasing their hand 100, the operator allows the spring force of the tension spring 52 to return the switch plate 51 from the second to the third position, and then by pushing it again with their hand 100, they return the switch plate 51 to the first position. By deliberately requiring the operator to perform these two actions, the system makes the operator aware of the need to return the switch plate 51 to its original position and turn off the microswitch 35.

During the process of the operator pushing the switch plate 51 from the third position to the first position, the O-ring 54 is pushed into the storage hole 41a and engages with the annular groove 41b. At this time, a certain amount of force is required from the operator, and a click is felt when the O-ring 54 engages with the annular groove 41b. This informs the operator that the switch plate 51 has been reliably returned to its original position.

Furthermore, even if the operator forgets to push the switch plate 51 to the first position, the microswitch 35 will remain in the off state if the switch plate 51 is in the third position. Additionally, when the end cap 45 is attached to the grip end 44, the switch plate 51 is pushed to the first position by the end cap 45. This returns the switch plate 51 to its original position, ensuring that the microswitch 35 remains stably in the off state.

4. Others In the above embodiment, when the switch plate 51 is returned from the second position to the first position, the O-ring 54 catches on the entrance 41c of the storage hole 41a, causing the switch plate 51 to stop in the third position. However, the switch plate 51 may be made to return automatically from the second position to the first position solely by the spring force of the tension spring 52, without the operator having to push it by hand.

2. Portable Restraint Net Deployment Device 4. Device Body 6. Cartridge 20. Adapter 31. Electronic Circuit 30. Circuit Unit 35. Microswitch (Momentary Switch)
36 pins (operating part)
40 Grip 41 Grip core 41a Storage hole 41b Annular groove 50 Operating mechanism 51 Switch plate (operating tool)
51a Head 52 Tension spring (spring device)
53 Pin 54 O-ring 56 Fixing device (spring device)
64 Squirter 65 Restraint net

Claims (4)

A cartridge housing a restraint net and a ejector for ejecting the restraint net,
The device body into which the aforementioned cartridge is detachably attached,
A circuit provided in the main body of the device and configured to operate the ejector when energized,
A momentary switch is provided on the main body of the device and is configured to energize the circuit upon receiving a displacement of the operating part from the off position to the on position,
An operating tool configured to be pulled out from the inside to the outside of the main body of the device, wherein the range of motion in the pulling direction is mechanically restricted to a range from a first position to a second position outside the first position, the operating part is held in the off position at the first position, and the operating part is positioned in the on position at the second position,
A portable restraint net deployment device, characterized by comprising: a spring device provided on the main body of the device and configured to apply a spring force to the operating tool in a direction from the second position toward the first position. In the portable restraint net deployment device according to claim 1,
The aforementioned momentary switch is configured as a normally-on switch.
The operating unit is configured to be positioned in the off position by being restrained by the operating tool when the operating tool is in the first position, and to return to the on position when the operating tool is released from the restraint of the operating tool when the operating tool is in the second position.
The portable restraint net deployment device is characterized in that the operating tool has an inclined portion that contacts the operating portion when moving from the second position to the first position, and gradually displaces the operating portion from the ON position to the OFF position. In the portable restraint net deployment device according to claim 1 or 2,
The operating tool is configured such that, when pulled out from the first position to the second position by pulling in the pulling direction, it automatically returns from the second position to the third position just before the first position by the spring force of the spring device when the pulling in the pulling direction is released, and returns from the third position to the first position by being pushed in the opposite direction to the pulling direction.
The portable restraint net deployment device is characterized in that the operating unit is configured to be in the off position when the operating tool is in the third position. In the portable restraint net deployment device according to claim 3,
The main body of the aforementioned device is
A cylindrical storage hole that opens outward and has an axis parallel to the direction of extraction,
The storage hole comprises an annular groove formed on its inner circumferential surface,
The aforementioned operating device is
A cylindrical head that slides within the aforementioned storage hole,
The head comprises an O-ring fitted to the circumferential surface of the head,
A portable restraint net deployment device characterized in that the position of the operating tool when the O-ring is fitted into the annular groove is the first position, the position of the operating tool when the O-ring is protruding from the storage hole is the second position, and the position of the operating tool when the O-ring is caught at the entrance of the storage hole is the third position.