WO2021208286A1 - Pulse water pump and water flosser - Google Patents

Abstract

A pulse water pump and a water flosser. The pulse water pump comprises: a pump body (100) provided with a pump pressure cavity (101), a water inlet hole (102), and a water outlet hole (103), the pump pressure cavity (101) being of an open cavity structure, both the water inlet hole (102) and the water outlet hole (103) allowing for communication between the pump pressure cavity (101) and the outside, the water inlet hole (102) being used for leading water into the pump pressure cavity (101), and the water outlet hole (103) being used for leading the water out of the pump pressure cavity (101); a pump pressure membrane (200) made of an elastic material, plugging an opening of the pump pressure cavity (101), and sealedly connected to the pump body (100); and a driver (300) used for driving the middle portion of the pump pressure membrane (200) to reciprocate in the direction of the opening of the pump pressure cavity (101). The pulse water pump and the water flosser can effectively avoid the problem of deteriorated sealability between the pump pressure membrane (200) and the pump body (100) caused by repeated use, without needing to seal two positions, thereby simplifying the structure and facilitating improvement of the reliability.

Description

Pulse water pump and dental scaler Technical field

The invention belongs to the technical field of tooth cleaning, and in particular relates to a pulse water pump and a tooth cleaner.

Background technique

The pulse water pump of the existing tooth flusher is mainly a piston water pump, that is, the piston rod continuously reciprocates in the pump body to realize the pulse water supply. Among them, in order to prevent water from directly flowing out of the pump body, a seal ring can be placed on the piston rod. The piston rod and the pump body can be covered with a sealing sleeve. One cylinder mouth of the sealing sleeve is sleeved on the pump body, and the other cylinder mouth is sleeved on the piston rod. Among them, when the piston rod is sleeved with the sealing ring, such as the Chinese patent ZL201822239370.7, the joint position between the sealing ring and the pump body is constantly changing, and the sealing ring will be worn to a certain extent, which will cause the sealing ring and the pump body to seal The performance drops, and there are water and air leakage problems after repeated use; when the piston rod and the pump body are covered with a sealing sleeve, both the piston rod and the pump body need to be sealed with the sealing sleeve, and two places need to be sealed. Processing results in a more complicated structure and reduced reliability.

technical problem

The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a pulse water pump, which aims to solve the problems of water leakage and air leakage after repeated use, as well as the problems of complicated structure and reduced reliability.

Technical solutions

The present invention is realized as follows:

A pulse water pump, including:

The pump body is provided with a pump pressure cavity, a water inlet hole, and a water outlet hole. The pump pressure cavity has an open cavity structure. Both the water inlet hole and the water outlet hole communicate the pump pressure cavity to the outside. The water hole is used to introduce water into the pump pressure cavity, and the water outlet hole is used to lead water out of the pump pressure cavity;

The pumping film is made of elastic material, and the pumping film blocks the mouth of the pumping cavity and is connected to the pump body in a sealed manner;

The driver is used to drive the middle part of the pumping film to reciprocate in the direction in which the pumping cavity is opened.

Optionally, the pump body is provided with a crimping surface on its outer surface, and the cavity of the pump pressure cavity is opened on the crimping surface;

The pulse water pump further includes a pressing member for pressing the pump pressing film on the pressing surface.

Optionally, the pump body is provided with an anti-drop groove on the pump side with an annular arrangement path on the edge of the crimping surface;

The pump pressing film is convexly provided with a pump-side anti-drop ring inserted into the pump-side anti-drop groove on its film edge toward the pump body.

Optionally, the arrangement path of the pressing member is a ring-shaped pressing-and-sticking anti-drop groove;

The pump pressing film is convexly provided with a pressing and anti-dropping ring inserted into the anti-dropping groove at its film edge facing away from the pump body.

Optionally, the water outlet hole is arranged opposite to the cavity of the pumping cavity.

Optionally, the cross-sectional shape of the pumping cavity is gradually expanded along the direction in which the cavity opening of the pumping cavity is opened.

Optionally, the driver includes a motor, a driving angle tooth, a driven angle tooth, an eccentric shaft, and a pumping connecting rod. The driving angle tooth is connected to the rotating shaft of the motor and is driven to rotate by the motor. The driven angle tooth meshes with the driving angle tooth, the eccentric shaft is connected to the driven angle tooth, and its central axis is parallel to and spaced apart from the rotation axis of the driven angle tooth, and the pump pressure connection The rod is provided with an interlocking groove for inserting and fitting the eccentric shaft, the extending direction of the interlocking groove is perpendicular to the opening direction of the pumping cavity, and the groove width of the interlocking groove is equal to the eccentric shaft The pumping connecting rod is connected to the middle part of the pumping film.

Optionally, the pumping connecting rod is provided with at least one guide rib protruding on its peripheral side;

The pump body is provided with at least one guide groove, the extending direction of the guide groove is parallel to the opening direction of the cavity opening of the pump pressure chamber, and the guide groove is used to guide the guide rib along the pump pressure chamber. The opening direction of the cavity opening moves, and the two groove walls of the guide groove abut the guide ribs.

Optionally, the pumping connecting rod is detachably connected to the pumping film.

The present invention also provides a dental scaler, including the above-mentioned pulse water pump of the dental scaler.

Beneficial effect

Based on the structural design of the present invention, firstly, after the pump pressure film is connected to the pump body in a sealed manner, the pump pressure film and the pump body will not move relative to each other during the use process. In this way, the pump pressure film can be effectively avoided. After repeated use between the pump body and the pump body, there will be a problem of reduced sealing. Secondly, in order to prevent the water in the pump body from flowing out directly, it is only necessary to achieve a sealed connection with the pump body at the edge of the sealing film, that is, only one place is needed. Sealing does not require two sealing treatments, which simplifies the structure and helps improve reliability.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained from these drawings.

Figure 1 is a perspective view of a pulse water pump provided by an embodiment of the present invention;

FIG. 2 is a cross-sectional view in the direction of AA in FIG. 1;

Figure 3 is a cross-sectional view in the direction of BB in Figure 1;

4 is a cross-sectional view of the pump body in the pulse water pump provided by the embodiment of the present invention in the direction AA in FIG. 1;

5 is a cross-sectional view of the pumping film in the pulse water pump provided by the embodiment of the present invention in the direction AA in FIG. 1;

Figure 6 is a perspective view of a pumping connecting rod in a pulse water pump provided by an embodiment of the present invention;

Fig. 7 is a perspective view of a pressure sticking piece of a pulse water pump provided by an embodiment of the present invention;

Fig. 8 is a perspective view of a dental scaler provided by an embodiment of the present invention.

Attached icon number description:

Label	name	Label	name
100	Pump body	To	To
101	Pump pressure chamber	102	Water inlet
103	drainage	To	To
105	Crimping surface	106	Anti-drop groove on the pump side
200	Pump pressure film	To	To
210	Pump side stop ring	220	Pressure sticking stop ring
230	Pump pressure bump	To	To
300	driver	To	To
310	Motor	320	Active angle tooth
330	Driven angle gear	340	Eccentric shaft
350	Pumping connecting rod	351	Guide rib
3501	Link groove	To	To
400	Pressure stick	401	The guide groove

Embodiments of the present invention

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not used to limit the present invention.

The embodiment of the present invention provides a pulse water pump, which can be used in a dental scaler and realizes pulse water supply.

Please refer to FIGS. 1 to 5, the pulse water pump includes a pump body 100, a pump pressing film 200 and a driver 300.

The pump body 100 is provided with a pump pressure chamber 101, a water inlet hole 102 and a water outlet hole 103. The pump pressure chamber 101 has an open cavity structure. The water inlet hole 102 and the water outlet hole 103 both connect the pump pressure chamber 101 to the outside, and the water The hole 102 is used to introduce water into the pump pressure chamber 101, and the water outlet hole 103 is used to lead water out of the pump pressure chamber 101. It should be noted here that the water inlet 102 can only introduce water into the pump pressure chamber 101, but cannot lead water from the pump pressure chamber 101. In actual use, the water inlet 102 is used when the pulse water pump needs to introduce water. Introduce water, specifically, the realization can be matched with a one-way valve that only allows water to flow to the pump pressure chamber 101; the water outlet can only lead water from the pump pressure chamber 101, but cannot introduce water into the pump pressure chamber 101, and in practice In use, the water inlet is used to introduce water when the pulse water pump needs to draw water out. Specifically, it can be implemented with a one-way valve that only allows water to flow out of the pump pressure chamber 101.

The pumping membrane 200 is made of elastic material, such as silica gel. The pump pressure film 200 blocks the mouth of the pump pressure chamber 101 and is connected to the pump body 100 in a sealed manner, so that it can prevent water from directly flowing out of the body.

The driver 300 is used to drive the middle part of the pumping film 200 to reciprocate in the direction in which the pumping cavity 101 is opened.

When the driver 300 drives the middle part of the pumping film 200 to reciprocate in the opening direction of the pumping chamber 101, the cavity space formed by the pump body 100 and the pumping film 200 will repeatedly switch between increasing and shrinking. Wherein, when the driver 300 drives the middle part of the pumping film 200 to move away from the pumping cavity 101, the cavity space formed by the pump body 100 and the pumping film 200 will continue to increase. At this time, the water inlet 102 introduces water into the pump pressure chamber 101. After that, the driver 300 drives the middle part of the pump pressure film 200 to move in the direction of the pump pressure chamber 101. The cavity space formed by the pump body 100 and the pump pressure film 200 will continue to shrink. At this time, the water outlet draws water from the pumping chamber 101, that is, pumps water out.

Based on this structural design, first of all, after the pumping film 200 is connected to the pump body 100 in a sealed manner, the connection between the pumping film 200 and the pump body 100 will not move relative to each other during use, so that the pump can be effectively avoided. The pressure film 200 and the pump body 100 have the problem of reduced sealing performance after repeated use. Secondly, in order to prevent the water in the pump body 100 from flowing out directly, it is only necessary to achieve a sealed connection with the pump body 100 at the edge of the sealing film. That is, only one place is required for sealing, instead of two places for sealing treatment, the structure is simplified and the reliability is improved.

Please refer to Figures 2 to 5 and Figure 7. In the embodiment of the present invention, the pump body 100 is provided with a crimping surface 105 on its outer surface, and the cavity of the pumping chamber 101 is opened on the crimping surface 105; the pulse water pump also includes The pressing member 400 is used for pressing the pump pressing film 200 to the pressing surface 105. Specifically, the sealing connection between the pump body 100 and the pump pressing film 200 is realized by "pressing the pump pressing film 200 to the pressing surface 105 by the pressing member 400". The structure is relatively simple to realize. It is easy to implement and helps reduce costs.

Specifically, the pressing member 400 can be directly threaded with the pump body 100, and during the screwing process, the pump pressing film 200 is gradually pressed against the pressing surface 105; the pressing connection can also be connected with the pump body 100 by screws, After the pressing piece 400 presses the pump pressing film 200 onto the pressing surface 105, the pressing piece is connected to the pump body 100 by screws; the pressing piece can also be connected with the pump body 100 through a buckle structure, and the pressing piece 400 is In the process of pressing the pump pressing film 200 onto the pressing surface 105, it is clamped to the pump body 100 at the same time.

Please refer to FIG. 1, in the embodiment of the present invention, the pump body 100 is provided with an annular pump-side anti-drop groove 106 on the edge of the crimping surface 105; A pump-side anti-drop ring 210 inserted into the pump-side anti-drop groove 106 is provided. Based on this, the cooperation of the pump-side anti-drop groove 106 and the pump-side anti-drop ring 210 can prevent the pump pressing film 200 from being separated from the pressing member 400 and the pump body 100, thereby ensuring the pump body 100 and the pump pressing film 200 Between the risks.

Further, please refer to Figures 4, 5, and 7, in the embodiment of the present invention, the pressing member 400 is arranged in a circular pressing and anti-drop groove; the pump pressing film 200 faces away from the pump body 100 at its film edge A press-fitting anti-dropping ring 220 inserted into the anti-dropping groove is convexly provided. Based on this, through the cooperation of the pressure sticking anti-drop groove and the pressure sticking anti-drop ring 220, it is possible to further prevent the pump pressing film 200 from being separated from the pressing piece 400 and the pump body 100, thereby further ensuring that the pump body 100 and the pump pressing film Risk between 200.

Please refer to FIGS. 2 to 4, in the embodiment of the present invention, the water outlet hole 103 is arranged opposite to the cavity port of the pumping chamber 101. In this way, in the process of pumping water, the opening direction of the water outlet hole 103 is in the same direction as the water flow direction, which is beneficial to increase the flow rate of the water when pumping.

2 to 4, in the embodiment of the present invention, the cross-sectional shape of the pumping chamber 101 is gradually expanded along the direction in which the opening of the pumping chamber 101 is opened. In this way, it is beneficial to increase the flow rate of the water when it is pumped out.

In the embodiment of the present invention, the pumping film 200 is provided with a pumping protrusion 230 on the side facing the pumping chamber 101.

1 to 3, in the embodiment of the present invention, the driver 300 includes a motor 310, driving angle teeth 320, driven angle teeth 330, eccentric shaft 340 and pumping connecting rod 350, the driving angle teeth 320 is connected to the motor 310 The rotating shaft is driven by the motor 310 to rotate. The driven angle tooth 330 meshes with the driving angle tooth 320. The eccentric shaft 340 is connected to the driven angle tooth 330, and its central axis is parallel and spaced from the rotation axis of the driven angle tooth 330. The pumping connecting rod 350 is provided with an interlocking groove 3501 that is inserted into the eccentric shaft 340. The extending direction of the interlocking groove 3501 is perpendicular to the opening direction of the pumping chamber 101, and the groove width of the interlocking groove 3501 is equal to the eccentricity The shaft diameter of the shaft 340, the pumping connecting rod 350 and the middle part of the pumping film 200 are connected. Based on this, first of all, the structure is simple, easy to implement, and is beneficial to reduce costs. Secondly, through the driving angle tooth 320 and the driven angle tooth 330, the rotation axis of the motor 310 can be parallel to the linear movement direction of the pumping connecting rod 350. It is beneficial to reduce the overall structure size of the pulse water pump.

Further, referring to Figures 6 and 7, the pumping connecting rod 350 is provided with at least one guide rib 351 on its peripheral side; the pump body 100 is provided with at least one guide groove 401, and the extending direction of the guide groove 401 is parallel to the pump pressure The opening direction of the cavity of the cavity 101, the guide groove 401 is used to guide the guide rib 351 to move along the opening direction of the cavity of the pumping cavity 101, and the two groove walls of the guide groove 401 abut the guide rib 351. In this way, the guide groove 401 guides the guide rib 351 to ensure the linear movement of the pumping connecting rod 350, avoiding the pumping connecting rod 350 from shaking, and reducing the friction between the pumping connecting rod 350 and the pump body 100, thereby reducing noise and benefiting Improve user experience.

In the embodiment of the present invention, there are three guide ribs 351 and three guide grooves 401.

1 to 3, in the embodiment of the present invention, the pumping connecting rod 350 and the pumping film 200 are detachably connected. In this way, if one of the pumping film 200 and the pumping connecting rod 350 is damaged, only Just replace one of them.

Specifically, the pumping film 200 is provided with a plug hole with a cross-sectional shape of an inverted T shape on the side facing away from the pump pressure chamber 101, and the pumping connecting rod 350 is provided with a plug hole with a cross-sectional shape of T and inserted into the plug hole. Connect the block.

Of course, in other embodiments, the pumping connecting rod 350 and the pumping film 200 can be manufactured in one piece by a two-color injection molding process.

Referring to Fig. 8, the present invention also proposes a dental scaler, which includes a pulse water pump. The specific structure of the pulse water pump refers to the above-mentioned embodiments. Since the dental scaler adopts all the technical solutions of all the above-mentioned embodiments, Therefore, it also has all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. Inside.

Claims (10)

1. A pulse water pump, characterized in that it comprises:

   The pump body is provided with a pump pressure cavity, a water inlet hole, and a water outlet hole. The pump pressure cavity has an open cavity structure. Both the water inlet hole and the water outlet hole communicate the pump pressure cavity to the outside. The water hole is used to introduce water into the pump pressure cavity, and the water outlet hole is used to lead water out of the pump pressure cavity;

   The pumping film is made of elastic material, and the pumping film blocks the mouth of the pumping cavity and is connected to the pump body in a sealed manner;

   The driver is used to drive the middle part of the pumping film to reciprocate in the direction in which the pumping cavity is opened.
2. The pulse water pump according to claim 1, wherein the pump body is provided with a crimping surface on its outer surface, and the cavity of the pump pressure cavity is opened on the crimping surface;

   The pulse water pump further includes a pressing member for pressing the pump pressing film on the pressing surface.
3. The pulse water pump according to claim 2, wherein the pump body is provided with an anti-drop groove on the pump side with an annular arrangement path on the edge of the crimping surface;

   The pump pressing film is convexly provided with a pump-side anti-drop ring inserted into the pump-side anti-drop groove on its film edge toward the pump body.
4. The pulse water pump according to claim 3, wherein the arrangement path of the pressing member is a ring-shaped pressing and anti-drop groove;

   The pump pressing film is convexly provided with a pressing and anti-dropping ring inserted into the anti-dropping groove at its film edge facing away from the pump body.
5. The pulse water pump according to claim 1, wherein the water outlet hole is arranged opposite to the cavity port of the pump pressure cavity.
6. The pulse water pump according to claim 1, wherein the cross-sectional shape of the pumping cavity is gradually expanded along the direction in which the cavity of the pumping cavity is opened.
7. The pulse water pump according to any one of claims 1 to 6, wherein the driver includes a motor, a driving angle tooth, a driven angle tooth, an eccentric shaft and a pumping connecting rod, and the driving angle tooth is connected to The rotating shaft of the motor is driven to rotate by the motor, the driven angle tooth is meshed with the driving angle tooth, the eccentric shaft is connected to the driven angle tooth, and the center axis of the eccentric shaft is connected to the driven angle tooth. The rotation axes of the movable angle teeth are parallel and arranged at intervals, the pumping connecting rod is provided with a linkage groove that is inserted and matched with the eccentric shaft, and the extension direction of the linkage groove is perpendicular to the cavity opening of the pumping cavity In the opening direction, the groove width of the interlocking groove is equal to the shaft diameter of the eccentric shaft, and the pumping connecting rod is connected with the middle part of the pumping film.
8. 8. The pulse water pump according to claim 7, wherein the pumping connecting rod is provided with at least one guide rib protruding on its peripheral side;

   The pump body is provided with at least one guide groove, the extending direction of the guide groove is parallel to the opening direction of the cavity opening of the pump pressure chamber, and the guide groove is used to guide the guide rib along the pump pressure chamber. The opening direction of the cavity opening moves, and the two groove walls of the guide groove abut the guide ribs.
9. 8. The pulse water pump according to claim 7, wherein the pumping connecting rod is detachably connected to the pumping film.
10. A dental scaler characterized by comprising the pulse water pump according to any one of claims 1-9.