Combination police electric tear gas baton

Abstract

This utility model provides a combined police electric tear gas baton, which integrates an electric spraying component and a tear gas canister within the baton body. In the electric spraying component, the motor, battery, and spray switch are connected in series to form a closed loop. The motor's start and stop can be controlled via the spray switch, making operation convenient and quick. The spraying component's volume cylinder is connected to a connector via a conduit. During tear gas canister replacement and use, the conduit remains fixed within the electric spraying component's housing, ensuring it is not easily folded or deformed, thus ensuring its effectiveness and extending its lifespan. This electric tear gas baton uses a piston rod and a one-way valve to extract and spray the tear gas. During use, starting the motor via the spray switch enables continuous spraying of tear gas, ensuring high accuracy and long range with each spray. The spraying function is stable and reliable, providing a better user experience and enhanced safety.

Description

Technical Field

[0001] This utility model relates to the field of police equipment technology, and more particularly to a combined electric police tear gas baton. Background Technology

[0002] Batons are common police equipment. Existing tear gas batons typically use a built-in tear gas canister with a conduit to guide the tear gas substance to a nozzle at one end. For example, a novel tear gas baton disclosed in Chinese Patent Publication No. CN209783400U uses a long conduit to guide the tear gas substance to a nozzle at one end of a telescopic rod. The extension and retraction of the telescopic rod causes the long conduit to bend, which over time will affect the normal use of the conduit and shorten its lifespan. Furthermore, the existing tear gas canisters generally use compressed gas to propel the tear gas agent, causing it to be sprayed in a specific direction. However, after repeated use, the gas pressure becomes insufficient, resulting in a shorter and shorter spray distance, failing to achieve the original effect, and potentially causing leaks, posing significant safety hazards. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a combined electric police tear gas baton.

[0004] To achieve the above objectives, this utility model provides a combined police electric tear gas baton, including a baton body and a tear gas canister disposed within the baton body, and an electric spraying assembly disposed within the baton body. The electric spraying assembly includes a housing and a battery, a spray switch, and a spraying component fixedly installed within the housing. The housing has a connector that is detachably pluggable to the tear gas canister. The battery, the spray switch, and the motor of the spraying assembly are electrically connected to form a closed circuit. The spraying assembly also includes a volume cylinder, a piston rod, and a gear set. The liquid inlet of the volume cylinder is connected to the connector via a conduit, and the spray port of the volume cylinder is exposed on the baton body. Both the liquid inlet and the spray port are connected to a one-way valve. One end of the piston rod is movably connected to the volume cylinder via a seal, and the other end is abutted against the inner wall of the housing via a spring. The piston rod also has a rack. The gear set drives the motor and the rack, and the gear set includes a drive gear with missing teeth.

[0005] When the missing tooth part meshes with the rack, it can drive the piston rod to move out of the volume cylinder and compress the spring. At this time, the one-way valve of the liquid inlet opens and the one-way valve of the injection port closes. When the drive gear separates from the rack, the spring drives the piston rod to move into the volume cylinder. At this time, the one-way valve of the injection port opens and the one-way valve of the liquid inlet closes.

[0006] Preferably, the stick includes a first stick, a second stick, a third stick, and a fourth stick, wherein the second stick is sleeved on the housing and contacts and engages with the outer wall of the housing, the third stick is also sleeved on the housing and is detachably threaded to the second stick, the first stick is covered on the housing and is detachably threaded to the second stick, and the fourth stick is detachably threaded to the third stick, with the tear gas canister fixedly housed between the two.

[0007] Preferably, a window-breaking cone is fixedly connected to the outer end wall of the fourth rod.

[0008] Preferably, the rod body further includes a fifth rod body and a sixth rod body that are detachably threadedly connected, the fifth rod body being detachably threadedly connected to the third rod body, and the sixth rod body being detachably threadedly connected to the fourth rod body.

[0009] Preferably, the housing includes a first housing, a second housing, and a third housing. The first housing is fixedly connected to the connector, the battery, the spray switch, and the second housing. The second housing is fixedly connected to the spray assembly. A plurality of limiting blocks and a plurality of snap-fit ​​blocks are spaced apart on the outer side wall of one end of the first housing. The limiting blocks are in contact with the second rod body, and the snap-fit ​​blocks are fastened to the third housing, so that the third housing can cover the end wall of the first housing. The end wall of the third housing is exposed on the first rod body and connected to the inner wall of the first rod body through a sealing ring.

[0010] Preferably, the electro-injection assembly further includes a strobe light and a light control switch. The strobe light is fixed on the first housing and arranged between the first housing and the third housing. The strobe light and the injection port are exposed on the end wall of the third housing on the same side. The light control switch is electrically connected to the battery and the strobe light to form a closed circuit. The light control switch and the injection switch are exposed on the third rod on the same side.

[0011] Preferably, the injection switch and the light control switch are integrated on the same circuit board. The circuit board is electrically connected to the battery and also integrates a charging head. The charging head is exposed on the third rod body, and the third rod body is provided with a cover plate that can be opened and closed at the position corresponding to the charging head.

[0012] Preferably, the first housing has a mounting position adjacent to the second housing. The mounting position includes four fixed posts arranged in a rectangular shape and a baffle arranged between any two of the fixed posts. The battery is fixedly held between the baffles. The circuit board is fixedly connected to the four fixed posts and the circuit board is placed on the battery.

[0013] Preferably, a retaining groove is provided at one end of the first housing opposite to the third housing. The connector includes a vertically arranged plate and a tube. The plate is retained and fixed in the retaining groove and exposed on the first housing. The tube is connected to the liquid inlet through a conduit and is detachably plugged into the tear gas canister.

[0014] Preferably, the gear set further includes an output gear fixed on the output shaft of the motor, a plurality of transmission gears that mesh sequentially and drive the output gear and the drive gear, and a stop pawl hinged in the housing, wherein one of the transmission gears is provided with a ratchet portion that meshes unidirectionally with the stop pawl.

[0015] Compared with existing technologies, the advantages and positive effects of this utility model are as follows: The combined electric police baton provided by this utility model integrates the electric spraying component and the tear gas canister into the baton body. In the electric spraying component, the motor, battery, and spray switch are connected in series to form a closed loop. The motor can be started and stopped by the spray switch, making it convenient and quick to use. The volume cylinder of the spraying component is connected to the connector through a conduit. During tear gas canister replacement and use, the conduit is always fixedly stored in the housing of the electric spraying component, ensuring that the conduit is not easily folded or deformed, thereby ensuring the effectiveness of the conduit and improving its service life. At the same time, compared with existing tear gas canisters that use compressed gas to spray tear gas, this electric tear gas baton uses a piston rod and a one-way valve to achieve the extraction and spraying of tear gas. When in use, the motor can be started by the spray switch to achieve continuous spraying of tear gas. This ensures that each spray has high accuracy and long range. The spraying function is stable and reliable, solving problems such as short range or gas leakage caused by insufficient gas pressure. This results in a better user experience and higher safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an electric tear gas canister in one embodiment of the present invention.

[0017] Figure 2 for Figure 1 A diagram showing the disassembly of a Chinese electric tear gas canister.

[0018] Figure 3 for Figure 2 A schematic diagram showing the disassembly of the first rod and the third shell.

[0019] Figure 4 for Figure 2 A schematic diagram showing the disassembly of the fifth and sixth rods connecting the third and fourth rods.

[0020] Figure 5 for Figure 2 A schematic diagram showing the disassembled state of the electronic fuel injection assembly.

[0021] Figure 6 for Figure 5 A schematic diagram showing the disassembled state of the injection assembly.

[0022] Figure 7 for Figure 1 A cross-sectional diagram of a Chinese electric tear gas canister.

[0023] In the diagram: 100 - Roller body; 110 - First roller body; 120 - Second roller body; 130 - Third roller body; 131 - Hole; 132 - Cover plate; 140 - Fourth roller body; 141 - Window breaker cone; 150 - Fifth roller body; 160 - Sixth roller body; 170 - Sealing ring; 200 - Tear gas canister; 300 - Electro-jet assembly; 310 - Housing; 311 - First housing; 3111 - Limiting block; 3112 - Snap-on block; 3113 - Fixing post; 3114 - Baffle; 3115 - Holding groove; 3116 - Fixing groove; 312 - Second housing; 313 - Third housing; 3131 - Snap-on hole; 320 - Battery; 330-Spray switch; 340-Spray assembly; 341-Motor; 342-Volume cylinder; 3421-Inlet; 3422-Spray nozzle; 3423-One-way valve; 343-Piston rod; 3431-Seal; 3432-Spring; 3433-Rack; 344-Gear set; 3441-Drive gear; 3442-Output gear; 3443-Transmission gear; 3444-Stop ratchet; 3445-Ratchet section; 3446-Missing tooth section; 350-Connector; 351-Panel; 352-Pipe fitting; 360-Strobe light; 370-Light control switch; 380-Circuit board; 381-Charging head. Detailed Implementation

[0024] The preferred embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] Please refer to Figures 1 to 7This embodiment provides a combined police electric tear gas baton, including a baton body 100 and a tear gas canister 200 and an electric spraying assembly 300 assembled within the baton body 100. The baton body 100 adopts a multi-segment detachable structure to facilitate adjustment of the baton body 100's length according to user needs, while also facilitating production assembly and subsequent maintenance and replacement of parts, thus improving practicality. Specifically, the baton body 100 includes a first baton body 110, a second baton body 120, a third baton body 130, and a fourth baton body 140. The second baton body 120 is sleeved on the housing of the electric spraying assembly 300 and contacts and engages with the outer wall of the housing. The third baton body 130 is also sleeved on the housing and detachably threaded to the second baton body 120. The first baton body 110 is covered on the housing and detachably threaded to the second baton body 120. The fourth baton body 140 is detachably threaded to the third baton body 130, and the tear gas canister 200 is fixedly housed between the two. In this embodiment, the third stick 130 has a hole 131 at the switch position corresponding to the electro-spray assembly 300, allowing it to be exposed. A cover 132 is detachably provided on the third stick 130 at the charging head position corresponding to the electro-spray assembly 300, protecting the charging head from damage. A window-breaking cone 141 is fixedly connected to the outer end wall of the fourth stick 140. During the use of the tear gas stick, the user can hold the stick 100 and use the window-breaking cone 141 to break a window, increasing its application range. In other embodiments of this invention, if the electro-spray assembly 300 uses a disposable battery, i.e., the electro-spray assembly 300 does not have a charging head, then the cover 132 may not be provided on the third stick 130. The window-breaking cone 141 may not be provided on the outer end wall of the fourth stick 140 as needed.

[0031] Understandably, the inner length of the baton 100 matches the combined length of the tear gas canister 200 and the electro-spray assembly 300, allowing the tear gas canister 200 and the electro-spray assembly 300 to be relatively securely installed within the baton 100. Furthermore, because the baton 100 employs a multi-segment detachable structure, its length is adjustable, and the length of the tear gas canister 200 can also be adjusted according to actual needs to increase capacity. In this case, only at least one transitional baton needs to be added between the third baton 130 and the fourth baton 140. Figure 4As shown, the rod body 100 may further include a fifth rod body 150 and a sixth rod body 160 that are detachably threadedly connected. The fifth rod body 150 is detachably threadedly connected to the third rod body 130, and the sixth rod body 160 is detachably threadedly connected to the fourth rod body 140. It should be noted that, in order to keep the inner cavity of the rod body 100 relatively sealed and prevent leakage from affecting the user experience, in this embodiment, a sealing ring 170 is provided between the internal and external threads of each rod body. The sealing ring 170 not only increases the sealing performance of the inner cavity of the rod body 100 but also increases the friction between the rod bodies, providing an anti-slip effect and making the threaded connection between the rod bodies relatively tighter. In other embodiments of this utility model, the sealing ring 170 may not be provided between the rod bodies of the rod body 100.

[0032] It is understood that the tear gas canister 200 refers to a canister containing tear gas. The nozzle of the canister is detachably plugged into the housing of the electric spray assembly 300 so that the tear gas canister 200 can be replaced by plugging and unplugging after the fourth rod 140 is removed. The operation is simple and convenient and does not affect the normal use of the electric spray assembly 300.

[0033] In this embodiment, the electro-spraying assembly 300 includes a housing 310 and a battery 320, a spray switch 330, a spraying assembly 340, a connector 350, a strobe light 360, a light control switch 370, and a circuit board 380, all fixedly installed within the housing 310. The spraying assembly 340 is activated under the control of the spray switch 330 to extract and spray tear gas. The strobe light 360 is activated under the control of the light control switch 370 to provide dazzling flashing and illumination, further expanding the application range of the tear gas stick. In other embodiments of this invention, the specific components of the electro-spraying assembly 300 can be adjusted according to actual usage requirements; for example, the strobe light 360 and the light control switch 370 may not be included.

[0034] The housing 310 includes a first housing 311, a second housing 312, and a third housing 312. The first housing 311 houses a battery 320, a connector 350, a strobe light 360, a circuit board 380, and the second housing 312. The second housing 312 houses a spray assembly 340. It is understood that the outer wall of the first housing 311, opposite to the connector 350, is provided with multiple limiting blocks 3111 and multiple locking blocks 3112 at intervals. The limiting blocks 3111 contact and engage with the second rod 120, positioning the second rod 120 at a designated position within the housing 310. The third housing 313 has locking holes 3131 at positions corresponding to the locking blocks 3112, which can be fastened to the locking blocks 3112, allowing the third housing 313 to be fixedly mounted on the end wall of the first housing 311. The end wall of the third housing 313 is exposed on the first rod 110 and connected to the inner wall of the first rod 110 through the sealing ring 170, so that the inner cavity of the rod 100 can be in a relatively closed state.

[0035] To securely mount the battery 320 and circuit board 380 within the first housing 311, a mounting position is provided adjacent to the second housing 312 within the first housing 311. This mounting position includes four rectangular fixing posts 3113 and baffles 3114 positioned between any two fixing posts 3113. The battery 320 is held and fixed between the baffles 3114, and the circuit board 380 is fixedly connected to the four fixing posts 3114, allowing the circuit board 380 to cover the battery 320, resulting in a more compact and rational distribution. Furthermore, the circuit board 380 can cooperate with the baffles 3114 to form a cavity that restricts the movement of the battery 320, making the use of the battery 320 safer and more stable. To securely mount the connector 350 within the first housing 311, a retaining groove 3115 is provided at the end of the first housing 311 opposite to the third housing 313. The connector 350 includes a vertically arranged plate 351 and a tube 352. The retaining groove 3115 is a groove structure that matches the shape of the plate 351. The plate 351 is retained and fixed in the retaining groove 3115 and exposed on the first housing 311. The tube 352 is connected to the volume cylinder of the spray assembly 340 through a conduit, and the tear gas canister 200 is detachably inserted and removed from the tube 352. The above arrangement fixes the connector 350 to the first housing 311 in a state perpendicular to the extension direction of the first housing 311. When the tear gas canister 200 is connected to the connector 350, the tear gas canister 200 can be placed along the extension direction of the first housing 311, making the combination of the electric spray assembly 300 and the tear gas canister 200 more compact and easier to accommodate and fix in the stick body 100. In order to fix the strobe light 360 on the first housing 311, a fixing groove 3116 is provided at the end of the first housing 311 opposite to the third housing 313. The fixing groove 3116 can hold and fix the circuit board structure of the strobe light 360, so that the main body of the strobe light 360 can be fixedly arranged between the first housing 311 and the third housing 313.

[0036] It should be noted that the first housing 311 is formed by two semi-cylindrical housings fixed together by screws or other threaded components, and the second housing 312 is formed by two elongated housings fixed together by threaded components or snap-fit ​​structures. The aforementioned arrangement of the first housing 311 and the second housing 312 facilitates the assembly of other components. The third housing 313 encapsulates and secures the spray assembly 340 and the strobe light 360 exposed at one end of the first housing 311, protecting the spray nozzle of the spray assembly 340 and the strobe light 360 from shaking or damage due to external forces. The third housing 313 has corresponding holes at the positions of the spray nozzle and the strobe light 360, allowing the strobe light 360 and the spray nozzle to be exposed on the same side of the end wall of the third housing 313, and subsequently exposed on the end wall of the first rod 110. In this embodiment, a sealing ring 170 is also provided between the holes of the third housing 313 and the spray nozzle and the strobe light 360. In other embodiments of this utility model, the sealing ring 170 may not be provided between the hole of the third housing 313 and the spray nozzle and the flash lamp 360.

[0037] It is understood that the battery 320 is a rechargeable battery. The spray switch 330 and the light control switch 370 are integrated on the same circuit board 380. The circuit board 380 is electrically connected to the battery 320, and a charging head 381 is also integrated on the circuit board 380. The charging head 381 is exposed on the third rod body 130 and can be exposed or hidden on the third rod body 130 through the cover plate 132. The charging head 381 enables the charging function of the battery 320. Among them, the battery 320 is electrically connected to the spray switch 330 and the motor of the spray assembly 340 through the circuit board 380 to form a closed circuit. The battery 320 is also electrically connected to the light control switch 370 and the strobe light 360 through the circuit board 380 to form a closed circuit. The spray switch 330 and the light control switch 370 are exposed on the same side of the third rod body 130 through the hole 131, so that the user can press to activate the spray function or the strobe (lighting) function according to the usage needs. It should be noted that the strobe light 360 adopts a structure already disclosed in the prior art, therefore its specific structure and working principle will not be described in detail here. In this embodiment, the circuit board 380 also integrates a Bluetooth module for wireless connection with external devices (such as remote control switches, mobile phones, and other electronic devices), allowing the user to control and activate the spray assembly 340 and the strobe light 360 through the external device. In other embodiments of this utility model, the Bluetooth module may not be provided on the circuit board 380.

[0038] The spray assembly 340 includes a motor 341 electrically connected to a circuit board 380, a volumetric cylinder 342 fixedly installed within a second housing 312, a piston rod 343 movably connected within the volumetric cylinder 342, and a gear set 344 drivingly connecting the motor 341 and the piston rod 343. The inlet 3421 of the volumetric cylinder 342 is connected to a fitting 352 via a conduit, ensuring that when a tear gas canister 200 is connected to the connector 350, the tear gas agent in the canister 200 can flow into the inlet 3421 through the conduit. The spray nozzle 3422 of the volumetric cylinder 342 is exposed on the first rod body 110 through a third housing 313, ensuring that the tear gas agent entering the volumetric cylinder 342 can be sprayed outwards through the spray nozzle 3422. Understandably, both the inlet 3421 and the spray nozzle 3422 are connected to a one-way valve 3423. The one-way valve 3423 is used to open or close the inlet 3421 and the spray nozzle 3422 accordingly when the volume of the cylinder 342 changes, thereby realizing the liquid pumping and spraying operations. One end of the piston rod 343 is movably connected to the inside of the cylinder 342 through a seal 3431, and the other end is in contact with the inner wall of the second housing 312 through a spring 3432. The piston rod 343 is also provided with a rack 3433. The gear set 344 includes a drive gear 3441 meshing with the rack 3433, an output gear 3442 fixed on the output shaft of the motor 341, and a plurality of transmission gears 3443 that mesh sequentially and drive the output gear 3442 and the drive gear 3441. In this embodiment, the gear set 344 further includes a stop pawl 3444 hinged within the second housing 312. One of the transmission gears 3443 is provided with a ratchet portion 3445 that meshes unidirectionally with the stop pawl 3444, serving to prevent the transmission gear 3443 from reversing and affecting the normal operation of the injection assembly 340. It is understood that the drive gear 3441 has a toothed portion 3446 that meshes separably with the rack 3433. In other embodiments of this invention, the gear set 344 may not be provided with the stop pawl 3444, and therefore the corresponding transmission gear 3443 may not be provided with the ratchet portion 3445.

[0039] According to the structure of the above-mentioned spray assembly 340, when the motor 341 is started under the control of the spray switch 330, the gear set 344 rotates continuously and can cooperate with the spring 3432 to drive the piston rod 343 to reciprocate within the volume cylinder 342. This allows for the extraction and spraying of the tear gas agent by changing the internal air pressure of the volume cylinder 342. Specifically, when the drive gear 3441 rotates to the point where the missing tooth 3446 meshes with the rack 3433, it can drive the piston rod 343 to move outward from the volume cylinder 342 and compress the spring 3432. At this time, the volume within the volume cylinder 342 increases, creating a negative pressure. The one-way valve at the inlet 3421 moves under pressure to open the inlet 3421, while the one-way valve at the spray port 3422 moves under pressure to close the spray port 3422, thereby allowing the liquid from the tear gas canister 200 to be drawn into the volume cylinder 342. When the drive gear 3441 rotates to the point where the missing tooth 3446 separates from the rack 3433, the spring 3432 drives the piston rod 343 to move rapidly into the volume cylinder 342. At this time, the volume of the volume cylinder 342 decreases, and the one-way valve of the spray port 3422 moves open under pressure, while the one-way valve of the liquid inlet 3421 moves close under pressure. This allows the tear gas agent in the volume cylinder 3422 to be squeezed out of the spray port 3422, achieving the purpose of spraying the tear gas agent. It should be noted that the one-way valves 3423 at the liquid inlet 3421 and the spray port 3422 both adopt one-way valve structures that have been disclosed in the prior art, and the specific structures of each one-way valve 3423 may be the same or different (in this embodiment, the structures of the two one-way valves 3423 are different). Since the specific structure and working principle of each one-way valve 3423 have been disclosed in the prior art, they will not be described in detail here.

[0040] Therefore, it can be seen that the spray assembly 340 can continuously and uninterruptedly spray tear gas during the start-up of the motor 341. Since the spray assembly 340 can spray without relying on compressed gas, it can ensure that each spray has high accuracy and long range. The spray function is stable and reliable, which can solve problems such as short range or air leakage caused by insufficient gas pressure, resulting in a better user experience and higher safety.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A combined electrically operated police baton and tear gas canister, comprising a baton body and a tear gas canister arranged in the baton body, characterized in that, It also includes an electro-spraying assembly disposed within the roller body. The electro-spraying assembly includes a housing and a battery, a spray switch, and a spraying component fixedly installed within the housing. The housing has a connector that can be detachably plugged into the tear gas canister. The battery, the spray switch, and the motor of the spraying component are electrically connected to form a closed circuit. The spraying component also includes a volume cylinder, a piston rod, and a gear set. The inlet of the volume cylinder is connected to the connector via a conduit. The spray nozzle of the volume cylinder is exposed on the roller body. Both the inlet and the spray nozzle are connected to a one-way valve. One end of the piston rod is movably connected to the volume cylinder via a seal, and the other end is connected to the inner wall of the housing via a spring. The piston rod also has a rack. The gear set drives the motor and the rack. The gear set includes a drive gear with missing teeth. When the missing tooth part meshes with the rack, it can drive the piston rod to move out of the volume cylinder and compress the spring. At this time, the one-way valve of the liquid inlet opens and the one-way valve of the injection port closes. When the drive gear separates from the rack, the spring drives the piston rod to move into the volume cylinder. At this time, the one-way valve of the injection port opens and the one-way valve of the liquid inlet closes.

2. The combination electrically operated police baton and tear gas gun as claimed in claim 1, wherein, The rod body includes a first rod body, a second rod body, a third rod body, and a fourth rod body, wherein the second rod body is sleeved on the housing and contacts and engages with the outer wall of the housing, the third rod body is also sleeved on the housing and is detachably threaded to the second rod body, the first rod body is covered on the housing and is detachably threaded to the second rod body, and the fourth rod body is detachably threaded to the third rod body, with the tear gas canister being fixedly housed between the two.

3. The combination electrically operated police baton / tear gas gun as claimed in claim 2, wherein, A window-breaking cone is fixedly connected to the outer end wall of the fourth rod.

4. The combination electrically operated police baton and tear gas gun as claimed in claim 2, wherein, The rod body also includes a fifth rod body and a sixth rod body that are detachably threaded together. The fifth rod body is detachably threaded together to the third rod body, and the sixth rod body is detachably threaded together to the fourth rod body.

5. The combination electrically operated police baton / tear gas gun as claimed in claim 2, wherein, The housing includes a first housing, a second housing, and a third housing. The first housing is fixedly connected to the connector, the battery, the spray switch, and the second housing. The second housing is fixedly connected to the spray assembly. A plurality of limiting blocks and a plurality of snap-fit ​​blocks are spaced apart on the outer side wall of one end of the first housing. The limiting blocks are in contact with the second rod body, and the snap-fit ​​blocks are fastened to the third housing, so that the third housing can cover the end wall of the first housing. The end wall of the third housing is exposed on the first rod body and connected to the inner wall of the first rod body through a sealing ring.

6. The combination electrically powered police baton / tear gas gun as claimed in claim 5, wherein, The electro-injection assembly also includes a strobe light and a light control switch. The strobe light is fixed on the first housing and arranged between the first housing and the third housing. The strobe light and the injection port are exposed on the end wall of the third housing on the same side. The light control switch is electrically connected to the battery and the strobe light to form a closed circuit. The light control switch and the injection switch are exposed on the third rod on the same side.

7. The combination electrically powered police baton / tear gas gun of claim 6, wherein, The injection switch and the light control switch are integrated on the same circuit board. The circuit board is electrically connected to the battery and also integrates a charging head. The charging head is exposed on the third rod body. The third rod body is provided with a cover plate that can be opened and closed at the position corresponding to the charging head.

8. The combination electrically powered police baton / tear gas gun as claimed in claim 7, wherein, The first housing has a mounting position adjacent to the second housing. The mounting position includes four fixed posts arranged in a rectangular shape and a baffle arranged between any two of the fixed posts. The battery is fixedly held between the baffles. The circuit board is fixedly connected to the four fixed posts and the circuit board is placed on the battery.

9. The combination electrically operated police baton / tear gas gun as claimed in claim 5, wherein, The first housing has a retaining groove at one end opposite to the third housing. The connector includes a vertically arranged plate and a tube. The plate is retaining and fixed in the retaining groove and exposed on the first housing. The tube is connected to the liquid inlet through a conduit and is detachably plugged into the tear gas canister.

10. The combination electrically powered police baton / tear gas gun of claim 1, wherein, The gear set also includes an output gear fixed on the output shaft of the motor, a plurality of transmission gears that mesh sequentially and drive the output gear and the drive gear, and a stop pawl hinged in the housing, wherein one of the transmission gears is provided with a ratchet portion that meshes unidirectionally with the stop pawl.

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