Pistol pump with child lock

Abstract

The utility model discloses a pistol pump with a child lock, which comprises a lock cover capable of being fixed on a bottle opening, a pump body is arranged on the lock cover, a trigger is hinged on the pump body, a nozzle groove is arranged on the inner side wall of a nozzle, and the nozzle can rotate relative to the pump body to switch a locking state and an unlocking state back and forth. When the nozzle is in an unlocking state, the nozzle groove is communicated with the liquid outlet channel and the outside, the nozzle is provided with a stop locking piece, the trigger is provided with a stop groove for allowing the stop locking piece to be inserted so as to limit rotation of the nozzle, and when the trigger is pressed, the stop groove can be driven to be separated from the stop locking piece; by the adoption of the structure, the locking state and the unlocking state can be switched by rotating the nozzle, the situation that a child mistakenly presses the trigger to spray liquid is avoided, the nozzle cannot be rotated when the trigger is not pressed, the situation that the child mistakenly touches and sprays mistakenly when rotating the nozzle unintentionally during playing is avoided, and mistaken spraying of the child can be effectively avoided by the adoption of the double-locking structure.

Description

Technical Field

[0001] The utility model relates to the technical field of pistol pumps, in particular to a pistol pump with a child lock. Background Art

[0002] A pistol pump is a device that, by pulling the trigger, sucks the liquid in a bottle into the pump body a predetermined number of times and sprays it out in a predetermined form. It is widely used in the pharmaceutical and daily chemical industries.

[0003] At present, the existing pistol pumps do not have a child-proof opening function. When a child accidentally touches the solution bottle with a pistol pump, the child can easily cause accidental spraying by pulling the trigger. This not only poses a risk to the child's personal safety, but also causes a great waste of solution.

[0004] Therefore, the present invention is just produced based on the above shortcomings. Utility Model Content

[0005] In view of this, an object of the utility model is to provide a pistol pump with a child lock, which can switch between a locked state and an unlocked state by rotating the nozzle, thereby preventing children from accidentally pressing the trigger to spray liquid.

[0006] The utility model adopts a technical solution to solve the technical problem, which is to provide a pistol pump with a child lock, comprising a lock cover that can be fixed on the bottle mouth, a pump body installed on the lock cover, a liquid inlet channel connected to the straw, a liquid storage chamber connected to the liquid inlet channel through a connecting port, a first one-way valve arranged at the connecting port, a liquid outlet channel for the liquid in the liquid storage chamber to flow out, a nozzle located at the outlet of the liquid outlet channel and for the liquid to be sprayed out, and a piston rod with one end slidably sealed and fitted in the liquid storage chamber and the other end extending from the opening of the liquid storage chamber, and a piston rod that can drive the pump body to move the pump body. The plug rod slides to squeeze the liquid in the liquid storage chamber to flow into the trigger of the liquid outlet channel. An elastic device is provided between the trigger and the pump body, which can drive the trigger to drive the piston rod to reset so that negative pressure is generated in the liquid storage chamber to suck the liquid into the liquid storage chamber. A nozzle groove is provided on the inner side wall of the nozzle. The nozzle can rotate relative to the pump body to switch between a locked state and an unlocked state. When the nozzle is in the unlocked state, the nozzle groove connects the liquid outlet channel and the outside world. The nozzle is provided with a stop lock. The trigger is provided with a stop groove for the stop lock to be inserted to limit the rotation of the nozzle. When the trigger is pressed, the stop groove can be driven to disengage from the stop lock.

[0007] As a further improvement of the utility model, the pump body includes a liquid outlet pipe and a tube core arranged in the liquid outlet pipe, one end of the tube core is inserted into the nozzle, and the tube core is provided with a tube core groove. When the nozzle is in an unlocked state, the nozzle groove rotates to a position corresponding to the tube core groove.

[0008] As a further improvement of the utility model, the outer peripheral surface of the piston rod is provided with a plurality of piston guide blocks abutting against the inner side wall of the liquid storage cavity.

[0009] As a further improvement of the utility model, a follower cylinder is provided on the side of the piston rod away from the liquid storage chamber, and the trigger is provided with a trigger groove for the follower cylinder to be inserted.

[0010] As a further improvement of the utility model, the trigger is provided with a hinge column, and the pump body is also provided with a hinge groove for the hinge column to be inserted.

[0011] As a further improvement of the utility model, the elastic device includes two arc-shaped elastic arms integrally formed on both sides of the trigger, and one end of the arc-shaped elastic arm is connected to the pump body.

[0012] As a further improvement of the utility model, the pump body is provided with a communication channel connecting the liquid storage chamber and the liquid outlet channel, and a second one-way valve for controlling the connection and disconnection between the liquid storage chamber and the liquid outlet channel is provided in the communication channel.

[0013] As a further improvement of the utility model, a mesh is connected to the outlet of the nozzle.

[0014] As a further improvement of the utility model, a pressure-stabilizing hole is provided on the inner wall of the liquid storage chamber, and the piston rod has an advancing position and a retreating position. When the piston rod is in the retreating position, the bottle mouth can be connected to the outside through the pressure-stabilizing hole.

[0015] The beneficial effects of the present invention are at least: the locking state and the unlocking state can be switched by rotating the nozzle, which prevents children from accidentally pressing the trigger to spray liquid; the nozzle cannot be rotated when the trigger is not pressed, which prevents children from accidentally rotating the nozzle while playing and causing accidental touching and spraying; the double locking structure can effectively prevent children from accidentally spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is the structural explosion diagram of the utility model and its partial enlarged diagram;

[0018] Figure 3 It is a structural exploded view and a partial enlarged view of the utility model from another angle;

[0019] Figure 4 It is a structural cross-sectional view and a partial enlarged view of the nozzle of the utility model when it is in a locked state;

[0020] Figure 5 It is a structural cross-sectional view and a partial enlarged view of the nozzle of the utility model when it is in an unlocked state;

[0021] Figure 6It is a structural exploded view and a partial enlarged view of the trigger and pump body of the utility model. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0023] Reference Figure 1-6 The utility model provides a pistol pump with a child lock, comprising a lock cover 1 that can be fixed on a bottle mouth, a pump body 2 installed on the lock cover 1, a liquid inlet channel 21 connected to a straw, a liquid storage chamber 23 connected to the liquid inlet channel 21 through a communication port 22, a first one-way valve 24 arranged at the communication port 22, a liquid outlet channel 25 for liquid in the liquid storage chamber 23 to flow out, a nozzle 3 located at the outlet of the liquid outlet channel 25 and for spraying liquid, and a nozzle 3 having one end slidably sealed in the liquid storage chamber 23 and the other end extending from the opening of the liquid storage chamber 23. The pump body 2 is hinged with a trigger 4 that can drive the piston rod 26 to slide and squeeze the liquid in the liquid storage chamber 23 into the liquid outlet channel 25. An elastic device 41 that can drive the trigger 4 to reset the piston rod 26 is provided between the trigger 4 and the pump body 2, so that negative pressure is generated in the liquid storage chamber 23 to suck the liquid into the liquid storage chamber 23. The inner side wall of the nozzle 3 is provided with a nozzle groove 31. The nozzle 3 can rotate relative to the pump body 2 to switch back and forth between the locked state and the unlocked state. When the nozzle 3 is in the unlocked state, the nozzle groove 31 connects the liquid outlet channel 25 and the outside world. Figure 4 and Figure 5 The nozzle 3 is provided with a stop lock 32, and the trigger 4 is provided with a stop groove 42 for the stop lock 32 to be inserted to limit the rotation of the nozzle 3. When the trigger 4 is pressed, the stop groove 42 can be driven to disengage from the stop lock 32; the locked state and the unlocked state can be switched by rotating the nozzle 3 to prevent children from accidentally pressing the trigger to spray liquid. When it is in the locked state, the nozzle groove 31 is sealed by the inner wall of the liquid outlet channel 25, so that the liquid cannot be sprayed from the nozzle 3. When it is in the unlocked state, the nozzle groove 31 is connected to the liquid outlet channel 25 and the outside world so that the liquid can be sprayed from the nozzle 3. When the trigger 4 is not pressed, the nozzle 3 cannot be rotated, so that children are prevented from accidentally rotating the nozzle 3 while playing, resulting in accidental touching and spraying. The double locking structure can effectively prevent children from spraying by mistake.

[0024] Reference Figure 4 and Figure 5 The pump body 2 includes a liquid outlet pipe 251 and a tube core 252 disposed in the liquid outlet pipe 251. One end of the tube core 252 is inserted into the nozzle 3. The tube core 252 is provided with a tube core groove 2521. When the nozzle 3 is in the unlocked state, the nozzle groove 31 rotates to a position corresponding to the tube core groove 2521; refer to Figure 4In the partial enlarged view, the tube core 252 and the nozzle 3 adopt an interference fit. When the nozzle 3 is in a locked state, the nozzle groove 31 is sealed by the tube core 252, so that the liquid cannot be sprayed out from the nozzle 3. When the nozzle 3 is in an unlocked state, the nozzle groove 31 moves to the position corresponding to the tube core groove 2521, so that the liquid can be sprayed out through the liquid channel 25, the nozzle groove 31 and the tube core groove 2521 in sequence.

[0025] Reference Figure 2 and Figure 3 The outer peripheral surface of the piston rod 26 is provided with a plurality of piston guide blocks 261 abutting against the inner wall of the liquid storage chamber 23 ; when the trigger 4 is pressed, the piston rod 26 can slide back and forth along the inner wall of the liquid storage chamber 23 .

[0026] As a further improvement of the present invention, the piston rod 26 is provided with a follower cylinder 262 on a side away from the liquid storage chamber 23 , and the trigger 4 is provided with a trigger groove 43 for the follower cylinder 262 to be inserted into.

[0027] As a further improvement of the present invention, the trigger 4 is provided with a hinge column 44 , and the pump body 2 is further provided with a hinge groove 27 for the hinge column 44 to be inserted into.

[0028] As a further improvement of the present invention, the elastic device 41 includes two arc-shaped elastic arms integrally formed on both sides of the trigger 4 , and one end of the arc-shaped elastic arm is connected to the pump body 2 .

[0029] As a further improvement of the present invention, the pump body 2 is provided with a connecting passage 28 connecting the liquid storage chamber 23 and the liquid outlet passage 25 , and a second one-way valve 5 for controlling the connection between the liquid storage chamber 23 and the liquid outlet passage 25 is provided in the connecting passage 28 .

[0030] As a further improvement of the present invention, a mesh 6 is connected to the outlet of the nozzle 3 to evenly disperse the sprayed liquid.

[0031] As a further improvement of the present invention, a pressure-stabilizing hole 231 is provided on the inner wall of the liquid storage chamber 23, and the piston rod 26 has a forward position and a backward position. When the piston rod 26 is in the backward position, the bottle mouth can be connected with the outside world through the pressure-stabilizing hole 231, so that the air pressure inside the bottle can maintain the same air pressure as the outside world during each pressing process, avoiding the air pressure in the bottle being too low after multiple pressings, causing the bottle body to shrink.

Claims

1. A pistol pump with a child lock, characterized in that: The invention comprises a locking cover (1) which can be fixed on the mouth of a bottle, a pump body (2) being mounted on the locking cover (1), the pump body (2) being provided with a liquid inlet channel (21) connected to a straw, a liquid storage chamber (23) connected to the liquid inlet channel (21) through a connecting port (22), a first one-way valve (24) arranged at the connecting port (22), a liquid outlet channel (25) for allowing liquid in the liquid storage chamber (23) to flow out, a nozzle (3) located at the outlet of the liquid outlet channel (25) for allowing liquid to be sprayed out, and a piston rod (26) having one end slidably and sealingly fitted in the liquid storage chamber (23) and the other end extending from the opening of the liquid storage chamber (23), a trigger (4) being hingedly connected to the pump body (2) and capable of driving the piston rod (26) to slide and squeeze the liquid in the liquid storage chamber (23) to flow into the liquid outlet channel (25), An elastic device (41) is provided between the trigger (4) and the pump body (2) and is capable of driving the trigger (4) to drive the piston rod (26) to reset so that negative pressure is generated in the liquid storage chamber (23) to draw liquid into the liquid storage chamber (23). A nozzle groove (31) is provided on the inner side wall of the nozzle (3). The nozzle (3) can rotate relative to the pump body (2) to switch between a locked state and an unlocked state. When the nozzle (3) is in the unlocked state, the nozzle groove (31) communicates with the liquid outlet channel (25) and the outside. The nozzle (3) is provided with a stop lock (32). The trigger (4) is provided with a stop groove (42) into which the stop lock (32) can be inserted to limit the rotation of the nozzle (3). When the trigger (4) is pressed, the stop groove (42) can be driven to disengage from the stop lock (32).

2. A pistol pump with a child lock according to claim 1, characterized in that: The pump body (2) comprises a liquid outlet pipe (251) and a tube core (252) arranged in the liquid outlet pipe (251); one end of the tube core (252) is inserted into the nozzle (3); the tube core (252) is provided with a tube core groove (2521); when the nozzle (3) is in an unlocked state, the nozzle groove (31) rotates to a position corresponding to the tube core groove (2521).

3. A pistol pump with a child lock according to claim 1, characterized in that: The outer peripheral surface of the piston rod (26) is provided with a plurality of piston guide blocks (261) abutting against the inner side wall of the liquid storage chamber (23).

4. A pistol pump with a child lock according to claim 1, characterized in that: The piston rod (26) is provided with a follower cylinder (262) on a side away from the liquid storage chamber (23), and the trigger (4) is provided with a trigger groove (43) for the follower cylinder (262) to be inserted.

5. A pistol pump with a child lock according to claim 1, characterized in that: The trigger (4) is provided with a hinge column (44), and the pump body (2) is also provided with a hinge groove (27) for the hinge column (44) to be inserted.

6. A pistol pump with a child lock according to claim 1, characterized in that: The elastic device (41) comprises two arc-shaped elastic arms integrally formed on both sides of the trigger (4), and one end of the arc-shaped elastic arm is connected to the pump body (2).

7. A pistol pump with a child lock according to claim 1, characterized in that: The pump body (2) is provided with a communication channel (28) connecting the liquid storage chamber (23) and the liquid outlet channel (25), and a second one-way valve (5) for controlling the connection and disconnection between the liquid storage chamber (23) and the liquid outlet channel (25) is provided in the communication channel (28).

8. A pistol pump with a child lock according to claim 1, characterized in that: The outlet of the nozzle (3) is connected to a mesh (6).

9. A pistol pump with a child lock according to claim 1, characterized in that: The inner wall of the liquid storage chamber (23) is provided with a pressure-stabilizing hole (231), and the piston rod (26) has an advancing position and a retreating position. When the piston rod (26) is in the retreating position, the bottle mouth can communicate with the outside world through the pressure-stabilizing hole (231).

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