Electric toy water spraying device

Abstract

According to the water spraying device for the electric toy, the sector gear is matched with the first rack and the second rack which are parallel to each other and are in central symmetry, so that first teeth in the first rack and the second rack can be in contact with the sector gear in the rotating process of the sector gear; and the first rack and the second rack can be in engaged connection with the sector gear in turn to drive the other end of the piston to move back and forth in the air cylinder barrel in a reciprocating manner, so that water absorption and water spraying actions are realized. The water spraying device of the electric toy is reasonable in structural design, due to the fact that no spring is arranged, loads of teeth of the racks can be reduced, meshing between the sector gear and the racks is stable, abrasion is not prone to occurring, and it can be guaranteed that the water spraying device has the good working effect and the long service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to a toy water spraying device technical field, especially to a kind of electric toy water spraying device. BACKGROUND

[0002] Water gun is the toy that children loves in summer, not only can relieve heat, is a kind of good interactive game, the water spraying device of water gun usually includes manual and electric two kinds.The Chinese utility model patent with the publication number "CN218270379U" discloses a launching device of toy water gun, when shooting, pull the toy water gun launching trigger to control motor work, motor drives gear set, since the full circle tooth gear disc on pumping water launching gear and gear set engage, to be driven by gear set pumping water launching gear continuous rotation, simultaneously make the rack on the half circle tooth gear disc displacement, i.e. drive piston moves back, to realize the water pumping in water inlet to cylinder, when half circle tooth gear disc rotates to the rack of tooth and the rack below piston disengages, piston under the action of spring rapidly the water in cylinder is shot to gun barrel.It can realize the purpose of electric water spraying, but it is through the engagement of gear teeth and rack to pull piston compression spring, at this time, the load of gear teeth is larger, in the instant when gear teeth and rack are about to separate or separate, still have a small part of gear teeth to engage load, prone to skid and lead to gear teeth abrasion, long-term, prone to gear teeth abrasion serious and lead to poor working effect, short service life. UTILITY MODEL CONTENT

[0003] The utility model aims at at least solving one of the technical problems existing in the prior art, and therefore proposes an electric toy water spraying device.

[0004] In order to achieve the aforementioned purposes, the utility model provides a kind of electric toy water spraying device, including shell, driving device and pneumatic device, the driving device includes motor and gear set being installed in the shell, the motor and the gear set are drivingly connected, the pneumatic device includes cylinder barrel and piston being installed in the shell, one end of the piston is movably connected in the cylinder barrel, the gear set includes driving gear being drivingly connected with the piston, and sector gear is provided on the driving gear;One end of the piston is fixedly provided with sealing ring, the sealing ring is in contact with the inner wall of the cylinder barrel, and the other end of the piston is provided with two connecting arms in parallel, first rack and second rack are provided on the opposite surface of two connecting arms, the first rack and the second rack are center-symmetrical and both include a first tooth and a plurality of second teeth sequentially distributed, the first tooth and the second tooth have the same tooth root height, the first tooth has greater tooth top height than the second tooth, and the first tooth can be contacted with the sector gear during the rotation of the sector gear, so that the first rack and the second rack can be alternately meshed with the sector gear.

[0005] As a preferred scheme, the vertical distance from the rotation axis center of the sector gear to the two connecting arms is equal, and the vertical distance from the tooth root of the sector gear to the connecting arm is equal to or slightly greater than the tooth height of the first tooth.

[0006] As a preferred scheme, the number of teeth in the sector gear is equal to the sum of the number of first teeth and second teeth in each connecting arm.

[0007] As a preferred scheme, the number of teeth in the sector gear is four, the number of first teeth in each connecting arm is one, and the number of second teeth is three.

[0008] As a preferred scheme, the gear set further includes a first gear, a second gear and a third gear, the driving gear is provided with a meshing gear, the first gear is fixed on the rotation axis of the motor, the second gear is meshed with the first gear and the third gear, and the third gear is meshed with the meshing gear.

[0009] As a preferred scheme, the transmission ratio between the first gear, the second gear, the third gear and the meshing gear is 23.

[0010] As a preferred scheme, one support rod is vertically provided on the opposite surface of two connecting arms respectively, and the support rod is provided with a sliding block slidably connected in the shell.

[0011] As a preferred scheme, a sliding groove is arranged in the shell relative to the sliding block, the elongation direction of the sliding groove is the same as the moving direction of the piston, when the sector gear contacts the first tooth of the first rack, the sliding block moves to one end of the sliding groove, when the sector gear contacts the first tooth of the second rack, the sliding block moves to the other end of the sliding groove.

[0012] As a preferred scheme, the support rod is arranged outside the shell, the shell comprises a first shell and a second shell which are detachably fixed, a sliding hole is formed between the first shell and the second shell, the sliding hole corresponds to the sliding groove and the support rod is slidably connected in the sliding hole.

[0013] As a preferred scheme, the water inlet and the water outlet are arranged on the cylinder barrel, and a one-way valve is arranged at each of the water inlet and the water outlet.

[0014] Therefore, according to the technical means of the utility model, the electric toy water spraying device provided by the utility model has the following effects: the electric toy water spraying device provided by the utility model does not need to be provided with a spring, the sector gear is matched with the first rack and the second rack which are parallel and centrally symmetrical, the first tooth of the first rack and the second rack can contact the sector gear during rotation of the sector gear, and then the first rack and the second rack can be connected with the sector gear in turn to drive the other end of the piston to reciprocate in the cylinder barrel, so that water absorption and water spraying actions are realized. The structure of the electric toy water spraying device is reasonable, the load of each rack tooth can be reduced without the spring, the sector gear and each rack are stably connected, are not easy to be worn, and the electric toy water spraying device has good working effect and long service life. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of a preferred embodiment of the utility model.

[0016] Figure 2 It is a structural schematic view of a preferred embodiment of the utility model. Figure 1 It is an exploded structural schematic view of the electric toy water spraying device.

[0017] Figure 3 It is a structural schematic view of a preferred embodiment of the utility model. Figure 1 It is a structural schematic view of the first tooth of the first rack contacting the sector gear.

[0018] Figure 4 It is a structural schematic view of a preferred embodiment of the utility model. Figure 3 It is a structural schematic view of the first tooth of the first rack contacting the sector gear.

[0019] Figure 5 It is a structural schematic view of a preferred embodiment of the utility model. Figure 1 It is a structural schematic view of the first tooth of the first rack contacting the sector gear.

[0020] Fig. 1: housing; 11: first housing; 12: second housing; 121: sliding groove; 100: sliding hole; 2: driving device; 21: motor; 22: gear set; 221: first gear; 222: second gear; 223: third gear; 224: driving gear; 2241: meshing gear; 2242: sector gear; 3: pneumatic device; 31: cylinder barrel; 311: water inlet; 312: water outlet; 32: piston; 321: connecting arm; 321a: first rack; 321b: second rack; 3211: first tooth; 3212: second tooth; 322: support rod; 3221: sliding block; 4: sealing ring; 5: one-way valve. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. It can be understood that the drawings are provided for reference and illustration only, and are not intended to limit the present application. The connections shown in the drawings are only for the convenience of clear description, and do not limit the connection mode.

[0022] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like are based on the directions or positional relationships shown in the drawings of the present application, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating that the devices or elements referred to must have a special direction or positional relationship, and therefore cannot be understood as limiting the present application. It should be noted that when one piece is considered to be "connected" to another piece, it can be directly connected to the other piece or there can be a middle piece. It should be understood that the terms "first", "second" and the like are only for the convenience of describing the technical solutions of the present application, and are not intended to indicate that the devices or elements referred to must have a special order, and therefore cannot be understood as limiting the present application. Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as understood by those skilled in the art of the present application. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application.

[0023] Please refer to Figures 1-5 The present embodiment provides a kind of electric toy water spraying device, including housing 1, driving device 2 and pneumatic device 3.

[0024] The shell 1 comprises a first shell 11 and a second shell 12 which are detachably fixed, and the driving device 2 and the pneumatic device 3 are fixedly installed between the first shell 11 and the second shell 12. In the embodiment, a sliding hole 100 is formed between the first shell 11 and the second shell 12, and a piston of the pneumatic device 3 is slidably connected in the sliding hole 100, so that the stability of the reciprocating movement of the piston in the shell 1 is increased. In order to further increase the stability of the movement of the piston in the shell 1, a sliding groove 121 is arranged in the second shell 12 at a position corresponding to the sliding hole 100, and a sliding block of the piston is slidably connected in the sliding groove 121. In other embodiments, the first shell 11 and the second shell 12 can be combined to form a closed shell.

[0025] The driving device 2 comprises a motor 21 and a gear set 22 which are transmissionally connected. In the embodiment, the gear set 22 comprises a first gear 221, a second gear 222, a third gear 223 and a driving gear 224, wherein the driving gear 224 is coaxially fixed by a meshing gear 2241 and a sector gear 2242. The first gear 221 is fixed on the rotating shaft of the motor 21, the second gear 222 is meshingly connected with the first gear 221 and the third gear 223, and the third gear 223 is meshingly connected with the meshing gear 2241. That is, the first gear 221, the second gear 222, the third gear 223 and the meshing gear 2241 are sequentially meshingly connected to form a meshing gear chain. It should be noted that the transmission ratio of the meshing gear chain is 23, which can cooperate with the rotating speed of the commonly used motor on the market to stably transmit power. In other embodiments, the number of gears and the value of the transmission ratio of the gear set 22 can be adjusted, for example, the number of gears of the gear set 22 can be adjusted to two or more, and the value of the transmission ratio of the gear set 22 can be adjusted to other values greater than one.

[0026] It can be understood that the sector gear 2242 is used for transmissionally connecting with the piston of the pneumatic device 3, and is used for achieving the purpose of driving the piston to reciprocally move back and forth. It should be noted that the vertical distance from the center of the rotating shaft of the sector gear 2242 (i.e. the center of the rotating shaft of the driving gear 224) to the two connecting arms in the piston is equal. The vertical distance from the dedendum of the sector gear 2242 (i.e. the outer surface of the sector gear 2242 without teeth) to the connecting arms is equal to or slightly greater than the tooth height of the first tooth of the connecting arms. The above-mentioned arrangement can compactly connect the sector gear 2242 with the piston, while ensuring that the sector gear 2242 can drive the piston to reciprocally move back and forth during continuous rotation.

[0027] The pneumatic device 3 comprises a movable connecting cylinder 31 and a piston 32. The piston 32 is fixed with a sealing ring 4 at one end, and the sealing ring 4 is in contact with the inner wall of the cylinder 31, so that a closed space is formed in the cylinder 31. When the piston 32 is controlled to move back and forth in the cylinder 31, the volume of the closed space can be changed to achieve the purpose of water absorption and water spraying. The cylinder 31 is provided with a water inlet 311 and a water outlet 312, and a one-way valve 5 is installed at each of the water inlet 311 and the water outlet 312 to cooperate with the piston 32 to achieve the purpose of water absorption and water spraying.

[0028] It can be understood that the other end of the piston 32 is provided with two connecting arms 321 in parallel, and the opposite surfaces of the two connecting arms 321 are provided with a first rack 321a and a second rack 321b. The first rack 321a and the second rack 321b are centrally symmetrical and each include a first tooth 3211 and a plurality of second teeth 3212 arranged in sequence. The tooth height of the first tooth 3211 and the tooth height of the second tooth 3212 are the same, and the tooth height of the first tooth 3211 is greater than the tooth height of the second tooth 3212. The tooth height of the first tooth 3211 is equal to or slightly smaller than the vertical distance from the tooth root of the sector gear 2242 to the connecting arm 321, and the first tooth 3211 can be in contact with the sector gear 2242 during rotation of the sector gear 2242, so that the first rack 321a and the second rack 321b can be alternately connected with the sector gear 2242, thereby driving the piston 32 to move back and forth.

[0029] It can be understood that the sum of the number of the first tooth 3211 and the second tooth 3212 in each connecting arm 321 is equal to the number of teeth of the sector gear 2242, so that the structure of the piston 32 and the driving gear 224 is simpler, and the sector gear 2242 and the piston 32 are further compactly connected. In the present embodiment, the number of teeth in the sector gear 2242 is four, so the number of the first tooth 3211 in each connecting arm 321 is one, and the number of the second tooth 3212 is three. In other embodiments, the number of teeth of the sector gear 2242 can be adjusted to five or more, and the number of the first tooth 3211 in each connecting arm 321 is still one, and the number of the second tooth 3212 can be adjusted to four or more.

[0030] It can be understood that the opposite surfaces of the two connecting arms 321 are vertically provided with a support rod 322, respectively. In the present embodiment, the support rod 322 is slidably connected in the sliding hole 100 and penetrates the housing 1, which can serve to indicate the relative position of the piston 32 in the cylinder 31. In other embodiments, the support rod 322 can be movably installed in the housing 1.

[0031] Each support rod 322 is provided with a sliding block 3221 slidably connected in the sliding groove 121, and the moving direction of the sliding block 3221 (i.e. the moving direction of the piston 32) is the same as the extending direction of the sliding groove 3231. When the sector gear 2242 contacts the first tooth 3211 of the first rack 321a, the sliding block 3221 moves to one end of the sliding groove 121; when the sector gear 2242 contacts the first tooth 3211 of the second rack 321b, the sliding block 3221 moves to the other end of the sliding groove 121.

[0032] The working process of the water spraying device of the electric toy provided by the embodiment is as follows: starting the motor 21, and the torque of the motor 21 can be transmitted to the piston 32 through the gear set 22 to drive one end of the piston 32 to reciprocate in the cylinder barrel 31, thereby realizing the water sucking and spraying actions. Specifically, the sector gear 2242 continuously rotates between the two connecting arms 321, and since the first rack 321a and the second rack 321b are parallel and centrally symmetric, the sector gear 2242 will face the first rack 321a or the second rack 321b during rotation. Please refer to Figures 3-5 For example, when the sector gear 2242 is in the process of turning from facing the second rack 321b to facing the first rack 321a, the sector gear 2242 can contact the first tooth 3211 of the first rack 321a, and then the sector gear 2242 can be connected with the first rack 321a in meshing mode to drive the piston 32 to move in the first direction. When the sector gear 2242 is in the process of turning from facing the first rack 321a to facing the second rack 321b, the sector gear 2242 can contact the first tooth 3211 of the second rack 321b, and then the sector gear 2242 can be connected with the second rack 321b in meshing mode to drive the piston 32 to move in the second direction opposite to the first direction.

[0033] For the sake of clarity, some features described in separate embodiments of the present application can be combined for use in a single embodiment. Moreover, various features of the present application described in a single embodiment can also be used in separate or in any suitable form in sub-combinations.

Claims

1. An electric toy water spraying device, comprising a housing, a drive unit, and a pneumatic device, wherein the drive unit includes a motor and a gear set installed within the housing, the motor and the gear set being kinetically connected; the pneumatic device includes a cylinder and a piston installed within the housing, one end of the piston being movably connected within the cylinder, characterized in that, The gear set includes a drive gear that is connected to the piston, and a sector gear is provided on the drive gear. A sealing ring is fixedly provided at one end of the piston, and the sealing ring abuts against the inner wall of the cylinder. Two connecting arms are arranged in parallel at the other end of the piston. A first rack and a second rack are provided on the opposite surfaces of the two connecting arms. The first rack and the second rack are centrally symmetrical and each includes a first tooth and a plurality of second teeth arranged in sequence. The root height of the first tooth and the second tooth are the same, and the tip height of the first tooth is greater than that of the second tooth. The first tooth can contact the sector gear during the rotation of the sector gear, so that the first rack and the second rack can mesh with the sector gear in turn.

2. The electric toy water spraying device as described in claim 1, characterized in that, The vertical distance from the center of the pivot of the sector gear to the two connecting arms is equal, and the vertical distance from the root of the sector gear to the connecting arm is equal to or slightly greater than the tooth height of the first tooth.

3. The electric toy water spraying device as described in claim 2, characterized in that, The number of teeth on the sector gear is equal to the sum of the number of the first teeth and the number of the second teeth in each of the connecting arms.

4. The electric toy water spraying device as described in claim 3, characterized in that, The sector gear has four teeth, and each connecting arm has one first tooth and three second teeth.

5. The electric toy water spraying device as described in claim 3, characterized in that, The gear set further includes a first gear, a second gear, and a third gear. The drive gear is provided with a meshing gear. The first gear is fixed to the rotating shaft of the motor. The second gear meshes with the first gear and the third gear. The third gear meshes with the meshing gear.

6. The electric toy water spraying device as described in claim 5, characterized in that, The transmission ratio between the first gear, the second gear, the third gear, and the meshing gear is 23.

7. The electric toy water spraying device as described in claim 1, characterized in that, Each of the two connecting arms has a support rod vertically mounted on its opposite side, and the support rod has a slider that can be slidably connected to the housing.

8. The electric toy water spraying device as described in claim 7, characterized in that, A groove is provided inside the housing relative to the slider. The extension direction of the groove is the same as the movement direction of the piston. When the sector gear contacts the first tooth of the first rack, the slider moves to one end of the groove. When the sector gear contacts the first tooth of the second rack, the slider moves to the other end of the groove.

9. The electric toy water spraying device as described in claim 8, characterized in that, The support rod passes through the outer side of the housing. The housing includes a first housing and a second housing that can be detachably fixed. A sliding hole is formed between the first housing and the second housing. The sliding hole is provided corresponding to the sliding groove, and the support rod is slidably connected in the sliding hole.

10. The electric toy water spraying device as described in claim 1, characterized in that, The cylinder has an inlet and an outlet, and a one-way valve is installed at both the inlet and the outlet.

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