Water gun pump head

Abstract

The utility model discloses a water gun pump head, which relates to the field of toy water gun devices, and comprises a shell, a power component, a transmission component, an excitation component, a water jet head and a water suction head, the shell is formed by folding and clamping split structures, the interior of the shell is provided with a cavity, the power component is detachably clamped at the tail end of the shell, and the transmission component is detachably clamped at the tail end of the shell. The transmission assembly and the excitation assembly are both arranged in an inner cavity of the shell, the transmission assembly is in transmission connection with the telescopic end of the excitation assembly and the rotating end of the power assembly, the water jet head is installed at the front end of the shell and communicates with the water outlet end of the excitation assembly, and the water suction head is arranged below the shell and communicates with the inner cavity, close to the water outlet end, of the excitation assembly. When the water suction port is blocked and the pump body is blocked, power transmission from the motor to the pump body can be automatically cut off, so that the motor is effectively prevented from being burnt out and a transmission part is effectively prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of toy water gun devices, and more particularly to a water gun pump head. Background Technology

[0002] Electric water guns are popular among children in recreational and outdoor water activities because of their long range, large water volume, and easy operation. Compared with traditional manual pressurized water guns, the core advantage of electric water guns lies in their built-in motor-driven water pump system, which can provide a continuous and powerful water jet effect, greatly enhancing the fun and experience of playing.

[0003] However, existing electric water guns have a significant drawback in terms of operational reliability: their suction ports are prone to clogging due to the intake of mud, debris, or foreign objects. Once clogged, the piston pump assembly connected to the suction port will instantly jam due to excessive resistance. Since the water pump's transmission mechanism usually uses a rigid connection, this jamming will be directly transmitted to the drive motor, causing the motor rotor to stall. When the motor is stalled, the current will increase sharply, which can easily cause the motor to overheat and burn out or the transmission gears to break. This not only interrupts the play process and poses a safety hazard, but the frequent damage also significantly increases the product's repair or replacement costs, affecting the user experience.

[0004] Therefore, how to develop a water gun pump head that can automatically cut off the power transmission from the motor to the pump body when the water inlet is blocked and the pump body is stuck, thereby effectively avoiding motor burnout and damage to transmission components, has become a technical problem that urgently needs to be solved by people in this field. Utility Model Content

[0005] The purpose of this invention is to provide a water gun pump head that can automatically cut off the power transmission from the motor to the pump body when the pump body is stuck due to blockage at the suction port, thereby effectively preventing motor burnout and damage to transmission components.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model discloses a water gun pump head, comprising a housing, a power component, a transmission component, an actuation component, a water jet head, and a water suction head. The housing is composed of a split structure that is snapped together, and the interior of the housing is hollow. The power component is detachably snapped onto the tail end of the housing. The transmission component and the actuation component are both disposed within the inner cavity of the housing, and the transmission component drivesly connects the telescopic end of the actuation component to the rotating end of the power component. The water jet head is installed at the front end of the housing and communicates with the water outlet end of the actuation component. The water suction head is disposed below the housing and communicates with the inner cavity of the actuation component near the water outlet end.

[0008] Preferably, the tail end of the housing is provided with a snap-fit ​​block; the power component includes a drive motor, the tail end of the drive motor is provided with a snap-fit ​​groove that matches the snap-fit ​​block, the drive motor is embedded in the tail end of the housing with its rotating end facing the inner cavity of the housing, and the snap-fit ​​block engages with the snap-fit ​​groove.

[0009] Preferably, the transmission assembly includes a first transmission gear, a second transmission gear, and a clutch gear assembly rotatably connected in the inner cavity of the housing. The first transmission gear is meshed and transmitted with the rotating end of the drive motor, the second transmission gear is meshed and transmitted with the first transmission gear, the power input end of the clutch gear assembly is meshed and transmitted with the second transmission gear, and the power output end of the clutch gear assembly is intermittently transmitted with the telescopic end of the excitation assembly.

[0010] Preferably, the clutch gear assembly includes a gear disk, an intermittent gear, a central shaft, a sleeve, and elastic support rings. The gear disk is rotatably disposed in the inner cavity of the housing via the central shaft. A receiving groove is formed on one side of the gear disk. The sleeve is rotatably sleeved on the central shaft and located on the side with the receiving groove. Four elastic support rings are distributed at equal angles along the circumference of the sleeve and are embedded in the receiving grooves. The outer diameter of the elastic support rings combined with the sleeve matches the inner diameter of the receiving groove. Multiple continuous limiting grooves are formed at equal intervals on the inner circumferential wall of the receiving groove. Limiting protrusions are formed on the outer circumference of any three adjacent elastic support rings. The limiting protrusions engage with the limiting grooves. The remaining elastic support ring is solid. The intermittent gear is disposed on the outer side wall of the sleeve and is fixedly connected to the solid elastic support ring.

[0011] Preferably, the excitation assembly includes a piston sleeve, a piston, a piston rod, and a U-shaped toothed plate. The piston sleeve is a cylindrical structure with one open end and is embedded in the inner cavity of the housing. One end of the piston rod is fixedly connected to the piston, and the other end of the piston rod is fixedly connected to the closed end of the U-shaped toothed plate. The piston is slidably connected inside the piston sleeve. The inner sidewall of the U-shaped toothed plate is provided with a rack that matches the tooth profile of the intermittent gear. The rack is used for meshing and transmission with the intermittent gear. The piston sleeve has a water outlet at the end away from its open end. The water jet head is fixedly connected to the front end of the housing, and the water inlet of the water jet head is connected to the water outlet. A water suction port is opened on the sidewall of the piston sleeve. The water suction head is fixedly connected to the bottom of the housing, and the water outlet of the water suction head is connected to the water suction port.

[0012] Preferably, guide posts are provided on both sides of the piston rod, and guide grooves matching the guide posts are provided on the housing, with the guide posts and guide grooves being slidably connected.

[0013] Preferably, the water suction head includes a water inlet sleeve, a sealing ring, a water inlet pipe, and an elastic plug. The water outlet end of the water inlet sleeve is embedded and connected to the water suction port. A sealing ring for forming a sealing connection with the water suction port is sleeved on the periphery of the water inlet sleeve. The water inlet pipe is connected to the water inlet end of the water inlet sleeve. The elastic plug is slidably connected in the inner cavity of the water inlet sleeve.

[0014] Preferably, the elastic plug includes a sealing disc and a helical spring. Multiple helical springs are fixedly connected at equal angles along the circumference of the sealing disc. The inlet end of the water inlet sleeve is configured with a variable diameter structure and has a small-diameter water outlet. The outer diameter of the sealing disc is larger than the diameter of the small-diameter water outlet, and the sealing disc is used to fit against the small-diameter water outlet to form a seal.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] 1) The drive motor 21 adopts a direct plug-in connection between the tail slot 22 and the tail end snap block 11 of the housing 1. This structural design makes the installation and disassembly of the motor simple and quick, without complicated tools or steps. When the motor needs to be repaired or replaced, it can be easily removed from the pump head housing, which greatly facilitates subsequent maintenance work.

[0017] 2) The clutch gear assembly 33 in the transmission assembly has an automatic protection function. When the water inlet 411 is blocked, causing the movement of the excitation assembly 4 to be obstructed, the elastic support ring 335 connected to the intermittent gear 332 will be squeezed and deformed. The limiting protrusion 336 on it can disengage from the limiting groove 3312 of the gear disk 331. This allows the power of the drive motor 21 to still drive the gear disk 331 to rotate freely, without forcibly driving the stuck intermittent gear 332. This design effectively avoids the drive motor from overloading and stopping or even burning out due to excessive load, improving the safety and reliability of the equipment operation. After the blockage is cleared, under the elastic force of the elastic support ring 335, the limiting protrusion 336 can automatically re-engage into the limiting groove 3312 and restore normal transmission.

[0018] 3) The suction head 6 internally employs an elastic plug 64 composed of a sealing disc and a helical spring. When the piston 42 pushes forward and generates high pressure, the combined action of water pressure and spring force keeps the sealing disc tightly against the small-diameter water inlet of the inlet sleeve 61, effectively preventing backflow and ensuring jet pressure. When the piston pulls back and generates negative pressure, the external water pressure overcomes the spring force and pushes open the sealing disc, allowing water to be smoothly drawn in. This structure is relatively simple and reliable. Furthermore, the elastic plug 64 is made of highly elastic POK material, possessing excellent corrosion resistance, effectively solving the problem of traditional materials easily rusting and failing, significantly extending the service life of this key sealing component, and ensuring long-term stability of the water suction function. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of a water gun pump head according to the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of a water gun pump head according to the present invention. Figure 2 ;

[0022] Figure 3 This utility model Figure 2 A magnified view of a section at point A in the middle;

[0023] Figure 4 This is a schematic diagram of the connection structure of the power assembly, transmission assembly, and excitation assembly of this utility model. Figure 1 ;

[0024] Figure 5 This is a schematic diagram of the connection structure of the power assembly, transmission assembly, and excitation assembly of this utility model. Figure 2 ;

[0025] Figure 6 This is a schematic diagram of the transmission component of this utility model;

[0026] Figure 7 This is an exploded structural diagram of the transmission component of this utility model;

[0027] Figure 8 This is a schematic diagram of the structure of the water inlet sleeve of this utility model;

[0028] Figure 9 This is a schematic diagram of the structure of the elastic plug of this utility model.

[0029] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Snap-fit ​​block; 12. Guide groove; 2. Power assembly; 21. Drive motor; 22. Snap-fit ​​groove; 3. Transmission assembly; 31. First transmission gear; 32. Second transmission gear; 33. Clutch gear assembly; 331. Gear disk; 3311. Receiving groove; 3312. Limiting groove; 332. Intermittent gear; 333. Central shaft; 334. Sleeve; 335. Elastic support ring; 336. Limiting protrusion; 4. Actuation assembly; 41. Piston sleeve; 411. Water inlet; 412. Water outlet; 42. Piston; 43. Piston rod; 44. U-shaped toothed plate; 45. Guide post; 5. Water jet head; 6. Water inlet head; 61. Water inlet sleeve; 62. Sealing ring; 63. Water inlet pipe; 64. Elastic plug. Detailed Implementation

[0030] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0031] like Figure 1-9 As shown, a water gun pump head includes a housing 1, a power component 2, a transmission component 3, an actuation component 4, a water jet head 5, and a water suction head 6. The housing 1 is composed of a split structure that is snapped together. The interior of the housing 1 is hollow. The power component 2 is detachably snapped onto the tail end of the housing 1. The transmission component 3 and the actuation component 4 are both disposed in the inner cavity of the housing 1, and the transmission component 3 drivesly connects the telescopic end of the actuation component 4 to the rotating end of the power component 2. The water jet head 5 is installed at the front end of the housing 1 and communicates with the water outlet end of the actuation component 4. The water suction head 6 is disposed below the housing 1 and communicates with the inner cavity of the actuation component 4 near the water outlet end.

[0032] Specifically, the tail end of the housing 1 is provided with a snap-fit ​​block 11; the power assembly 2 includes a drive motor 21, the tail end of the drive motor 21 is provided with a snap-fit ​​groove 22 that matches the snap-fit ​​block 11, the drive motor 21 is embedded in the tail end of the housing 1 with its rotating end facing the inner cavity of the housing 1, and the snap-fit ​​block 11 is snap-fitted into the snap-fit ​​groove 22.

[0033] Specifically, the drive motor 21 is externally mounted and snapped into the tail of the housing 1. This mounting method achieves a stable connection between the drive motor 21 and the housing 1 by interlocking the snap-fit ​​block 11 at the tail of the housing 1 with the snap-fit ​​groove 22 at the tail of the drive motor 21. This simplifies the installation and disassembly process of the motor and facilitates subsequent maintenance and repair.

[0034] Specifically, the transmission assembly 3 includes a first transmission gear 31, a second transmission gear 32, and a clutch gear assembly 33 rotatably connected in the inner cavity of the housing 1. The first transmission gear 31 is meshed and transmitted with the rotating end of the drive motor 21, the second transmission gear 32 is meshed and transmitted with the first transmission gear 31, the power input end of the clutch gear assembly 33 is meshed and transmitted with the second transmission gear 32, and the power output end of the clutch gear assembly 33 is intermittently transmitted with the telescopic end of the excitation assembly 4.

[0035] Specifically, the clutch gear assembly 33 includes a gear disk 331, an intermittent gear 332, a central shaft 333, a sleeve 334, and elastic support rings 335. The gear disk 331 is rotatably disposed in the inner cavity of the housing 1 via the central shaft 333. A receiving groove 3311 is formed on one side of the gear disk 331. The sleeve 334 is rotatably sleeved on the central shaft 333 and located on the side with the receiving groove 3311. Four elastic support rings 335 are evenly distributed around the sleeve 334 and embedded in the receiving grooves 3311. The outer diameter of the elastic support ring 335 combined with the sleeve 334 matches the inner diameter of the receiving groove 3311. The inner circumferential wall of the receiving groove 3311 is provided with a plurality of continuous limiting grooves 3312 at equal intervals. Any three adjacent elastic support rings 335 are provided with limiting protrusions 336 on their outer circumference. The limiting protrusions 336 are engaged with the limiting grooves 3312. The remaining elastic support ring 335 is solid. The intermittent gear 332 is provided on the outer side wall of the sleeve 334 and is fixedly connected to the solid elastic support ring 335.

[0036] Specifically, during normal operation, the gear disk 331 engages with the limiting protrusion 336 on the top of the elastic support ring 335 via the limiting groove 3312, thereby driving the intermittent gear 332 to rotate. The intermittent gear 332 then drives the U-shaped toothed plate 44 to perform reciprocating sliding motion. If the suction port 411 becomes blocked, the sliding of the U-shaped toothed plate 44 is obstructed, preventing it from properly meshing with the intermittent gear 332. In this case, the rotation of the intermittent gear 332 will be hindered by the rack of the U-shaped toothed plate 44. When the intermittent gear 332 stops, it is connected to the gear disk 331 through the elastic support ring 335. The surfaces of the limiting groove 3312 and the limiting protrusion 336 are both designed to be arc-shaped. When the intermittent gear 332 stops, the elastic support ring 335 is squeezed and can shrink and deform inward. This allows the gear disk 331 to continue rotating even when the intermittent gear 332 does not rotate. This effectively prevents the drive motor 21 from being overloaded or damaged due to jamming, and ensures the safety and stability of the device operation.

[0037] Specifically, the excitation assembly 4 includes a piston sleeve 41, a piston 42, a piston rod 43, and a U-shaped toothed plate 44. The piston sleeve 41 has a cylindrical structure with one open end and is embedded in the inner cavity of the housing 1. One end of the piston rod 43 is fixedly connected to the piston 42, and the other end of the piston rod 43 is fixedly connected to the closed end of the U-shaped toothed plate 44. The piston 42 is slidably connected inside the piston sleeve 41. The inner sidewall of the U-shaped toothed plate 44 is provided with intermittent gears. A rack with matching tooth profile 332 is used for meshing and transmission connection with the intermittent gear 332. The piston sleeve 41 has an outlet 412 at one end away from its open end. The water jet head 5 is fixedly connected to the front end of the housing 1, and the water inlet of the water jet head 5 is connected to the water outlet 412. A water suction port 411 is opened on the side wall of the piston sleeve 41. The water suction head 6 is fixedly connected to the bottom of the housing 1, and the water outlet of the water suction head 6 is connected to the water suction port 411.

[0038] Specifically, guide posts 45 are provided on both sides of the piston rod 43, and guide grooves 12 that match the guide posts 45 are provided on the housing 1, and the guide posts 45 are slidably connected to the guide grooves 12.

[0039] Specifically, the water suction head 6 includes a water inlet sleeve 61, a sealing ring 62, a water inlet pipe 63, and an elastic plug 64. The water outlet end of the water inlet sleeve 61 is embedded in the water suction port 411. The periphery of the water inlet sleeve 61 is fitted with a sealing ring 62 for forming a sealing connection with the water suction port 411. The water inlet pipe 63 is connected to the water inlet end of the water inlet sleeve 61. The elastic plug 64 is slidably connected in the inner cavity of the water inlet sleeve 61.

[0040] Specifically, the elastic plug 64 includes a sealing circular plate and a helical spring. Multiple helical springs are fixedly connected at equal angles along the circumference of the sealing circular plate. The water inlet end of the water inlet sleeve 61 is configured with a variable diameter structure and has a small-diameter water outlet. The outer diameter of the sealing circular plate is larger than the diameter of the small-diameter water outlet, and the sealing circular plate is used to fit the small-diameter water outlet to form a seal.

[0041] Specifically, the elastic plug 64 is made of highly elastic POK (polyketone) material, which has excellent corrosion resistance and can effectively prevent the plug from rusting, thereby extending its service life.

[0042] The usage process of this utility model is as follows:

[0043] First, connect the water inlet pipe 63 of the suction head 6 to the water source and start the drive motor 21. The rotating end of the drive motor 21 starts to rotate, and drives the second transmission gear 32 to rotate through the first transmission gear 31 meshing with it. The second transmission gear 32 further drives the gear disk 331 of the clutch gear assembly 33 to rotate. Under normal conditions, the gear disk 331 transmits power to the sleeve 334 through the locking engagement between the limiting groove 3312 on its inner circumferential wall and the limiting protrusion 336 on the elastic support ring 335, thereby driving the intermittent gear 332 fixed on the sleeve 334 to rotate synchronously.

[0044] Secondly, the rotating intermittent gear 332 meshes with the rack on the inner wall of the U-shaped toothed plate 44. Since the closed end of the U-shaped toothed plate 44 is fixedly connected to the piston 42 through the piston rod 43, and the guide posts 45 on both sides of the U-shaped toothed plate 44 slide in the guide groove 12 of the housing 1, the rotation of the intermittent gear 332 is converted into the reciprocating linear motion of the U-shaped toothed plate 44 (together with the piston rod 43 and the piston 42) in the piston sleeve 41.

[0045] Then, during the reciprocating motion of piston 42:

[0046] When the piston 42 moves toward the closed end of the piston sleeve 41 (i.e., the end with the outlet 412), the pressure inside the piston sleeve 41 in front of the piston 42 increases. This pressure pushes the elastic plug 64 toward the inlet end of the inlet sleeve 61 (i.e., the small diameter water outlet of the variable diameter structure). With the assistance of the helical spring, the sealing disc tightly fits the small diameter water outlet to form a seal, preventing water from flowing back. At the same time, high-pressure water enters the jet head 5 through the outlet 412 at the front end of the piston sleeve 41 and is finally ejected from the jet head 5 to form a jet.

[0047] When the piston 42 moves toward the open end of the piston sleeve 41, a negative pressure is formed in the inner cavity of the piston sleeve 41 in front of the piston 42. The water pressure of the water source overcomes the elastic force of the helical spring in the elastic plug 64, pushing the sealing disc away from the small-diameter water inlet. The water flow can enter through the inlet end of the inlet sleeve 61, and the water flow passes through the outlet end of the inlet sleeve 61 and is sucked into the inner cavity of the piston sleeve 41 through the suction port 411 to store water for the next propulsion stroke.

[0048] Finally, the piston 42's thrust and retraction strokes are continuously driven by the intermittent gear 332, thus forming a continuous water flow intake and high-pressure ejection process.

[0049] If an abnormality such as blockage of the suction port 411 occurs, causing obstruction of the movement of the U-shaped toothed plate 44 (and piston 42) and preventing the intermittent gear 332 from rotating: the gear disk 331, driven by the drive motor 21, attempts to continue rotating, which will compress the elastic support ring 335 fixed to the intermittent gear 332. At this time, the elastic support ring 335 can contract and deform inward, causing the limiting protrusion 336 on it to disengage from the limiting groove 3312 of the gear disk 331, allowing the gear disk 331 to idle while the intermittent gear 332 is stuck. This clutch protection mechanism effectively prevents the drive motor 21 from burning out due to overload, improving the safety and reliability of the device operation. After the blockage is cleared, under the elastic restoring force of the elastic support ring 335, the limiting protrusion 336 re-engages into the limiting groove 3312, and the transmission returns to normal.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A water gun pump head, characterized in that: The device includes a housing (1), a power assembly (2), a transmission assembly (3), an excitation assembly (4), a water jet head (5), and a water suction head (6). The housing (1) is composed of a split structure that is snapped together. The interior of the housing (1) is hollow. The power assembly (2) is detachably snapped onto the tail end of the housing (1). The transmission assembly (3) and the excitation assembly (4) are both located in the inner cavity of the housing (1). The transmission assembly (3) drives the telescopic end of the excitation assembly (4) to the rotating end of the power assembly (2). The water jet head (5) is installed at the front end of the housing (1) and is connected to the water outlet end of the excitation assembly (4). The water suction head (6) is located below the housing (1) and is connected to the inner cavity of the excitation assembly (4) near the water outlet end.

2. A water gun pump head according to claim 1, characterized in that: The tail end of the housing (1) is provided with a snap-fit ​​block (11); the power assembly (2) includes a drive motor (21), the tail end of the drive motor (21) is provided with a snap-fit ​​groove (22) that matches the snap-fit ​​block (11), the drive motor (21) is embedded in the tail end of the housing (1) with its rotating end facing the inner cavity of the housing (1), and the snap-fit ​​block (11) is snap-fitted into the snap-fit ​​groove (22).

3. A water gun pump head according to claim 2, characterized in that: The transmission assembly (3) includes a first transmission gear (31), a second transmission gear (32), and a clutch gear assembly (33) rotatably connected in the inner cavity of the housing (1). The first transmission gear (31) is meshed and transmitted with the rotating end of the drive motor (21). The second transmission gear (32) is meshed and transmitted with the first transmission gear (31). The power input end of the clutch gear assembly (33) is meshed and transmitted with the second transmission gear (32). The power output end of the clutch gear assembly (33) is intermittently transmitted with the telescopic end of the excitation assembly (4).

4. A water gun pump head according to claim 3, characterized in that: The clutch gear assembly (33) includes a gear disk (331), an intermittent gear (332), a central shaft (333), a sleeve (334), and elastic support rings (335). The gear disk (331) is rotatably disposed in the inner cavity of the housing (1) via the central shaft (333). A receiving groove (3311) is provided on one side of the gear disk (331). The sleeve (334) is rotatably sleeved on the central shaft (333) and located on the side where the receiving groove (3311) is provided. Four elastic support rings (335) are evenly distributed along the circumference of the sleeve (334) and embedded in the receiving groove (3311). The outer diameter of the elastic support ring (335) combined with the sleeve (334) matches the inner diameter of the receiving groove (3311). The inner circumferential wall of the receiving groove (3311) is provided with a plurality of continuous limiting grooves (3312) at equal intervals. Any three adjacent elastic support rings (335) are provided with limiting protrusions (336) on their outer circumference. The limiting protrusions (336) are engaged with the limiting grooves (3312). The remaining elastic support ring (335) is solid. The intermittent gear (332) is provided on the outer side wall of the sleeve (334) and is fixedly connected to the solid elastic support ring (335).

5. A water gun pump head according to claim 4, characterized in that: The excitation assembly (4) includes a piston sleeve (41), a piston (42), a piston rod (43), and a U-shaped toothed plate (44). The piston sleeve (41) has a cylindrical structure with one end open and is embedded in the inner cavity of the housing (1). One end of the piston rod (43) is fixedly connected to the piston (42), and the other end of the piston rod (43) is fixedly connected to the closed end of the U-shaped toothed plate (44). The piston (42) is slidably connected inside the piston sleeve (41). The inner sidewall of the U-shaped toothed plate (44) is provided with a tooth that corresponds to the intermittent gear (3). 32) A rack with matching tooth profile, the rack being used for meshing and transmission connection with the intermittent gear (332), the piston sleeve (41) having an outlet (412) at one end away from its opening end, the water jet head (5) being fixedly connected to the front end of the housing (1), and the water inlet of the water jet head (5) being connected to the water outlet (412), the piston sleeve (41) having a suction port (411) on its side wall, the suction head (6) being fixedly connected to the bottom of the housing (1), and the water outlet of the suction head (6) being connected to the suction port (411).

6. A water gun pump head according to claim 5, characterized in that: The piston rod (43) is provided with guide posts (45) on both sides, and the housing (1) is provided with guide grooves (12) that match the guide posts (45). The guide posts (45) and the guide grooves (12) are slidably connected.

7. A water gun pump head according to claim 5, characterized in that: The suction head (6) includes an inlet sleeve (61), a sealing ring (62), an inlet pipe (63), and an elastic plug (64). The outlet end of the inlet sleeve (61) is embedded in the suction port (411). The periphery of the inlet sleeve (61) is fitted with a sealing ring (62) for forming a sealing connection with the suction port (411). The inlet pipe (63) is connected to the inlet end of the inlet sleeve (61). The elastic plug (64) is slidably connected in the inner cavity of the inlet sleeve (61).

8. A water gun pump head according to claim 7, characterized in that: The elastic plug (64) includes a sealing disc and a helical spring. Multiple helical springs are fixedly connected at equal angles along the circumference of the sealing disc. The water inlet end of the water inlet sleeve (61) is configured with a variable diameter structure and has a small diameter water outlet. The outer diameter of the sealing disc is larger than the diameter of the small diameter water outlet, and the sealing disc is used to fit the small diameter water outlet to form a seal.

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