CN219953576U - Water pump assembly for tooth cleaner - Google Patents

Abstract

The utility model discloses a water pump assembly for a tooth cleaner, comprising: the water inlet seat forms a piston cavity and a water inlet and a water jetting port communicated with the piston cavity; the water inlet and the water jet path are mutually perpendicular; the water pumping structure is used for extruding water entering the piston cavity to the water jetting port for jetting; the water pumping structure comprises a piston seat, a guide rod and a motor; the piston seat is directly or indirectly sleeved on the output shaft of the motor and is in anti-rotation fit with the output shaft; a ring groove is formed along the peripheral wall of the piston seat, and the track of the ring groove is wavy and surrounds the periphery of the piston seat; the guide rod is arranged along the radial direction of the water inlet seat and is partially arranged in the annular groove; the motor drives the piston seat to rotate, and the linkage piston seat is driven to axially move in the piston cavity under the cooperation of the annular groove and the guide rod while rotating so as to extrude water out of the water injection port; the utility model provides a water pump assembly solves the problem that current tooth washer water pump assembly structure is complicated, volume and noise are big.

Description

Water pump assembly for tooth cleaner

Technical Field

The utility model relates to the field of production of oral hygiene products, in particular to a water pump assembly for a tooth cleaner.

Background

Today, with the improvement of living standard, oral hygiene is more and more important, and the requirements of people are difficult to be met by tooth brushing, and the household and portable tooth washing device gradually goes deep into daily oral cleaning of people and is favored by wide consumers;

the water pump component in the tooth cleaner is one of the core components of the whole tooth cleaner product; the water pump assembly of the existing tooth cleaner drives the gear transmission group to act through the motor, after the linkage eccentric swing rod moves, the piston is driven to reciprocate in the water inlet cavity, and the water pump is ejected to realize the tooth cleaning and tooth washing functions; however, the existing water pump assembly has the following disadvantages, in particular: (1) The volume is large, the noise is large, the transmission between the motor and the piston is realized by adopting the gear transmission group at present, and a large installation space is required to be occupied, so that the whole volume is enlarged, and the concept of miniaturization and portability is greatly hindered; in addition, meshing transmission noise generated during gear transmission is large, and the use experience is seriously affected; (2) poor structural stability and easy failure; at least two reversals are needed in the mode of combining helical gear transmission with an eccentric swing rod in the prior art, the whole transmission is unstable in the mode, the assembly is required to be better and more accurate (namely, complicated and various components are required to be accurately installed in a small-size tooth washer space), and the production efficiency is greatly reduced; (3) the components are more and the cost is high;

based on the above, the existing water pump assembly of the tooth cleaner needs to be further improved and lifted.

Disclosure of Invention

The utility model aims to overcome the defects or problems in the background art and provide a water pump assembly for a tooth cleaner, which has the advantages of simple structure, simple and convenient manufacture, easy realization and low cost, and solves the problems of complex structure, large volume and large noise of the water pump assembly of the existing tooth cleaner;

in order to achieve the above purpose, the present utility model adopts the following technical scheme:

a water pump assembly for a dental washer, the water pump assembly comprising:

the water inlet seat forms a piston cavity and is communicated with a water inlet and a water jet of the piston cavity; the water inlet and the water jet path are mutually perpendicular;

the water pumping structure is used for extruding water entering the piston cavity to the water jetting port for jetting; the water pumping structure comprises a piston seat, a guide rod and a motor; the piston seat is directly or indirectly sleeved on the output shaft of the motor and is in anti-rotation fit with the output shaft; a ring groove is formed along the peripheral wall of the piston seat, and the track of the ring groove is wavy and surrounds the periphery of the piston seat; the guide rod is arranged along the radial direction of the water inlet seat and is partially arranged in the annular groove;

the motor drives the piston seat to rotate, and the linkage piston seat is driven to axially move in the piston cavity under the cooperation of the annular groove and the guide rod while rotating, so that water is extruded out of the water injection port.

Further, the water inlet device further comprises a bearing, wherein the outer peripheral wall of the bearing is fastened to the water inlet seat, and the inner peripheral wall of the bearing is tightly sleeved on the guide rod, so that the guide rod rotates relative to the water inlet seat.

Further, at least two groups of wave crests and wave troughs are formed on the ring groove, and the two wave crests and the wave troughs are symmetrically arranged, so that the piston seat can reciprocate twice along with the axial direction of the water inlet cavity when the motor rotates for a circle.

Further, the device also comprises a bridge piece which is arranged between the piston seat and the output shaft; the bridge piece is sleeved on the output shaft in a rotation-stopping way and is used for driving the piston seat to rotate and enabling the piston seat to translate along the axis of the bridge piece in the rotation process.

Further, the piston seat comprises a seat body and a rubber body, and the rubber body is arranged at one end of the seat body, which is far away from the motor; the seat body comprises a connecting part and a passive part which are connected into a whole, wherein the connecting part is used for being attached to the rubber body, and the peripheral wall of the passive part is molded into the annular groove and is used for being in rotation-stopping fit with the bridging piece.

Further, the rubber body comprises a main body, a deformation part and a yielding groove, and the main body is connected with the seat body through an attachment structure; the deformation part is formed on the main body and extends outwards in an inclined manner from the end part of the main body; the abdication groove is formed on the end face of one end of the main body far away from the seat body and used for the deformation part to be pressed and deformed inwards.

Further, the attachment structure comprises an assembly groove and a hooking part, wherein the hooking part is formed at the end part of the connecting part and extends along the axial direction; the assembly groove is formed in the main body and is used for limiting and installing the hooking part.

Further, the end face of one end of the guide rod, which is arranged in the ring groove, is an arc face.

From the above description of the present utility model, compared with the prior art, the present utility model has the following advantages:

(1) The utility model provides a water pump assembly for a tooth cleaner, which has the advantages of simple structure, simple and convenient manufacture, easy realization and low cost, and solves the problems of complex structure, large volume and large noise of the existing water pump assembly for the tooth cleaner; the novel pump water structure omits the original large-volume transmission structure which is easy to lose efficacy, the output of the motor can be directly transmitted to the piston seat, the reliability and continuity of the movement of the piston seat can be ensured only by a wavy annular groove and a guide rod, the volume is small, the cost is low, and most importantly, the assembly in such a small space is simpler and more convenient, thereby providing a foundation for the small-volume portable tooth cleaner;

(2) The novel piston seat is additionally provided with the bearing, so that the guide rod rotates along with the piston seat in the spiral movement process, the friction force between the guide rod and the piston seat is reduced, the movement process is smoother, the clamping phenomenon is not easy to occur, and the reliability and the stability are good;

(3) The novel device is provided with at least two groups of wave crests and wave troughs, so that the motor can realize twice reciprocating motion after rotating for a circle, thereby improving the working efficiency, having faster water spraying speed and better effect;

(4) The utility model discloses still set up a bridging piece, enlarge the contact of piston seat and output shaft and the area of stopping changeing, and give longer displacement length for holistic stability is better.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the description of the embodiments below are briefly introduced, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a three-dimensional exploded view of a water pump assembly according to the present utility model;

FIG. 2 is a schematic perspective view of a water pump assembly according to the present utility model;

FIG. 3 is a cross-sectional view of a water pump assembly according to the present utility model;

FIG. 4 is a schematic perspective view of a piston seat according to the present utility model;

FIG. 5 is a front view I of the piston seat of the present utility model;

FIG. 6 is a schematic diagram showing a perspective view of a piston seat according to the present utility model;

fig. 7 is a front view of a piston seat according to the present utility model.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It is to be understood that the described embodiments are preferred embodiments of the utility model and should not be taken as excluding other embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without creative efforts, are within the protection scope of the present utility model.

In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.

In the claims, specification and drawings hereof, unless explicitly defined otherwise, references to orientation terms such as "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counter-clockwise", etc., are based on the orientation and positional relationship shown in the drawings and are for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have or be constructed and operated in a particular orientation, nor should it be construed as limiting the particular scope of protection of the utility model.

In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.

In the claims, specification and drawings of the present utility model, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.

Referring to fig. 1-2, a water pump assembly for a dental washer according to the present embodiment includes:

a water inlet seat 1 which is arranged in a shell 2 of the tooth cleaner and is used for pumping out water in a water tank of the tooth cleaner; the water inlet seat 1 forms a water inlet cavity 11, a water inlet 12 communicated with the water inlet cavity 11 and a water jet 13 (the water inlet 12 is communicated with a water tank, and the water jet 13 is communicated with a nozzle); the water inlet 12 and the water jet 13 are arranged in a mutually perpendicular way;

a water pumping structure for extruding water entering the water inlet chamber 11 to the water jetting port 13 for jetting;

the water pumping structure comprises a piston seat 3, a guide rod 4 and a motor 5;

the piston seat 3 is directly or indirectly sleeved on the output shaft of the motor 5 and is in anti-rotation fit with the output shaft 51;

a ring groove 33 is formed along the peripheral wall of the piston seat 3, the track of the ring groove 33 is wavy (it is to be noted here that, in the present utility model, a round of reciprocation may be completed, or two rounds of reciprocation may be completed, that is, at least two sets of wave crests 33A and wave troughs 33B are formed on the ring groove 33, and the two wave crests 33A and the wave troughs 33B are symmetrically arranged, so that the piston seat 3 rotates along with the motor 5 for two times relative to the axial reciprocation of the water inlet cavity 11, and surrounds the periphery of the piston seat 3;

the guide rod 4 is arranged along the radial direction of the piston seat 3 and is partially arranged in the annular groove 33, in the novel structure, the end surface of one end of the guide rod 4 arranged in the annular groove 33 is an arc surface 40 so as to reduce friction force and prevent clamping; in addition, the water inlet seat 1 is fixedly sleeved with the guide rod 4 by the outer peripheral wall of the bearing 8, so that the guide rod 4 rotates relative to the water inlet seat 1; the arrangement is that the guide rod 4 rotates along with the piston seat 3 when rotating, and the guide rod plays a role in guiding and smooth matching through rotation;

wherein, the motor 5 drives the piston seat 3 to rotate, and the linkage piston seat 3 is driven to axially displace in the water inlet cavity 11 by the cooperation of the ring groove 33 and the guide rod 4 simultaneously in a rotating way so as to extrude water out of the water inlet 13.

More specifically, it also comprises a bridge 6, which is mounted between the piston seat 3 and the output shaft 51; the bridge 6 is rotationally sleeved on the output shaft 51 and is used for driving the piston seat 3 to rotate and enabling the piston seat 3 to translate along the axis of the bridge 6 in the rotating process.

More specifically, the piston seat 3 includes a seat body 31 and a rubber body 32, and the rubber body 32 is mounted at one end of the seat body 31 away from the motor 5; the base 31 comprises a connecting part 311 and a passive part 312 which are connected into a whole, the connecting part 311 is used for being attached to the rubber body 32, the peripheral wall of the passive part 312 forms the annular groove 33 and is used for being in non-rotating fit with the output shaft 51 of the motor 5, the rubber body 32 comprises a main body 321, a deformation part 322 and a yielding groove 323, and the main body 321 is connected with the base 31 through an attachment structure; the deformation part 322 is formed on the main body 321 and extends outwards in an inclined manner at the end part of the main body 321; the relief groove 323 is formed on an end surface of the main body 321, which is far away from the end of the base 31, so as to allow the deformation portion 322 to be pressed and deformed inwards.

More specifically, the attachment structure 7 includes an assembly groove 71 and a hooking portion 72, and the hooking portion 72 is formed at an end of the connecting portion 311 and extends in an axial direction; the assembly groove 71 is formed in the main body 321, and is used for limiting the hook portion 72.

In particular, as shown in fig. 1 to 7, the water pump assembly for a dental washer according to the present utility model mainly comprises the following components: the device comprises a shell 2, a water inlet seat 1, a piston seat 3, a guide rod 4, a motor 5, a ring groove 33, a bridge piece 6, a seat body 31, a rubber body 32, a main body 321, a deformation part 322, a yielding groove 323, an attachment structure 7, an assembly groove 71 and a hooking part 72;

in the actual assembly and use process, the water tank is provided with a water tank,

(1) The water inlet seat 1 is provided with a water inlet 12, a water jet 13 and a water inlet cavity 11; the water inlet seat 1 is arranged in the shell 2 of the tooth cleaner, the water inlet 12 is communicated with the water tank of the tooth cleaner, the water jetting port 13 is communicated with the nozzle, and the water inlet 12 is arranged on the side wall of the water inlet seat 1, namely, is arranged along the radial direction, and the water jetting port 13 is arranged along the axial direction;

(2) Assembling a piston seat 3, wherein the piston seat 3 comprises a seat body 31 and a rubber body 32; wherein the seat body 31 is made of plastic, a connecting part 311 and a passive part 312 are formed, and a hooking part 72 is formed at the extension of the end part of the connecting part 311 for being attached with the rubber body 32; the outer peripheral wall of the passive part 312 is provided with a wavy annular groove 33, wherein the wave-shaped wave crests 33A and wave troughs 33B of the annular groove 33 are set according to the product requirement, and can be a wave crest 33A and a wave trough 33B, so that one linear reciprocating motion process can be formed by rotating for one circle, and two wave crests 33A and wave troughs 33B can be also arranged, namely two linear reciprocating motion processes can be formed by rotating for one circle;

the rubber body 32 comprises a body 321, a deformation part 322 and a relief groove 323 which are integrally formed, wherein the deformation part 322 is formed on the body 321 and extends outwards in an inclined manner at the end part of the body 321, and is matched with the inner wall of the water inlet cavity 11 to play a role in sealing; the relief groove 323 is formed on an end surface of the main body 321, which is far away from the end of the seat 31, for the deformation portion 322 to be pressed and deformed inwards;

after the rubber body 32 is prepared, the connecting part 311 of the main body 321 corresponding to the seat body 31 is arranged, and after the hooking part 72 on the connecting part 311 is arranged in the assembling groove 71 of the main body 321, the assembly of the main body 321 and the connecting part is realized;

(3) The bridge member 6 is sleeved on the output shaft 51 of the motor 5 in a rotation-stopping manner and is mounted with the seat 31 in a rotation-stopping manner, and it is to be noted that the rotation-stopping mounting and the rotation-stopping sleeving means that at least one limiting surface is arranged on both the bridge member 6 and the seat 31, and synchronous rotation between all the components can be realized through the limiting surfaces;

(4) A bearing 8 is arranged on the water inlet seat 1, the outer peripheral wall of the bearing 8 is tightly matched with the water inlet seat 1, and the inner peripheral wall is tightly matched with the guide rod 4; so that the guide rod 4 can rotate in the radial direction of the water inlet seat 1 but cannot move;

(5) The piston seat 3 is entirely installed in the water inlet cavity 11, and the end part of the guide rod 4 is placed in the annular groove 33, so that the whole assembly process is completed;

when in use, the motor 5 rotates after being electrified, the output shaft 51 directly or indirectly drives the piston seat 3 to rotate, and the novel structure is exemplified in an indirect mode, namely, the output shaft 51 drives the bridging piece 6 to rotate, and then the piston seat 3 which is in rotation-stopping fit with the bridging piece 6 is linked to perform circumferential rotation; meanwhile, as the piston seat 3 rotates and is influenced by the guide rod 4 and the wavy annular groove 33, the piston seat 3 changes from circumferential rotation to spiral movement, namely, linear displacement is realized in the rotation process, and the rubber body 32 of the piston seat 3 is driven to extrude water in the water inlet cavity 11 out of the water injection port 13 (the guide rod 4 is positioned at the position of the wave crest 33A at the moment); then, the piston seat 3 is driven to move reversely when the piston seat rotates from the wave crest 33A to the wave trough 33B under the action of the ring groove 33, and no air enters the water inlet cavity 11 (negative pressure is formed), so that water in the water tank is sucked into the water inlet cavity 11 from the water inlet 12, and water is extruded out for the next time, so that the reciprocating cycle is realized;

it should be noted that, the ring groove 33 may be provided with two peaks 33A and two valleys 33B, that is, the ring groove rotates for two times of reciprocating movement, that is, two water spraying processes are implemented, so as to improve efficiency.

The utility model provides a water pump assembly for a tooth cleaner, which has the advantages of simple structure, simple and convenient manufacture, easy realization and low cost, and solves the problems of complex structure, large volume and large noise of the existing water pump assembly for the tooth cleaner; the novel pump water structure omits the original large-volume transmission structure which is easy to lose efficacy, the output of the motor can be directly transmitted to the piston seat, the movement reliability and continuity of the piston seat can be ensured only by a wavy annular groove and a guide rod, the volume is small, the cost is low, and most importantly, the assembly is simpler and more convenient in such small space, thereby providing a foundation for the small-volume portable tooth cleaner; the novel piston seat is additionally provided with the bearing, so that the guide rod rotates along with the piston seat in the spiral movement process, the friction force between the guide rod and the piston seat is reduced, the movement process is smoother, the clamping phenomenon is not easy to occur, and the reliability and the stability are good; the novel device can be provided with at least two groups of wave crests and wave troughs, so that the motor can realize twice reciprocating motion after rotating for a circle, thereby improving the working efficiency, having faster water spraying speed and better effect; the utility model discloses still set up a bridging piece, enlarge the contact of piston seat and output shaft and the area of stopping changeing, and give longer displacement length for holistic stability is better.

The foregoing description of the embodiments and description is presented to illustrate the scope of the utility model, but is not to be construed as limiting the scope of the utility model.

Claims (8)

1. A water pump assembly for a dental washer, characterized by: the water pump assembly includes:

the water inlet seat forms a piston cavity and is communicated with a water inlet and a water jet of the piston cavity; the water inlet and the water jet path are mutually perpendicular; the water pumping structure is used for extruding water entering the piston cavity to the water jetting port for jetting; the water pumping structure comprises a piston seat, a guide rod and a motor; the piston seat is directly or indirectly sleeved on the output shaft of the motor and is in anti-rotation fit with the output shaft; a ring groove is formed along the peripheral wall of the piston seat, and the track of the ring groove is wavy and surrounds the periphery of the piston seat; the guide rod is arranged along the radial direction of the water inlet seat and is partially arranged in the annular groove; the motor drives the piston seat to rotate, and the linkage piston seat is driven to axially move in the piston cavity under the cooperation of the annular groove and the guide rod while rotating, so that water is extruded out of the water injection port.

2. A water pump assembly for a dental washer as in claim 1, wherein: the water inlet seat is fixedly arranged on the outer side wall of the bearing, and the guide rod is fixedly sleeved on the inner side wall of the bearing, so that the guide rod rotates relative to the water inlet seat.

3. A water pump assembly for a dental washer according to claim 1 or 2, wherein: at least two groups of wave crests and wave troughs are formed on the ring groove, and the two wave crests and the wave troughs are symmetrically arranged so that the piston seat can reciprocate twice along with the axial direction of the water inlet cavity when the motor rotates for a circle.

4. A water pump assembly for a dental washer according to claim 1 or 2, wherein: the bridge piece is arranged between the piston seat and the output shaft; the bridge piece is sleeved on the output shaft in a rotation-stopping way and is used for driving the piston seat to rotate and enabling the piston seat to translate along the axis of the bridge piece in the rotation process.

5. A water pump assembly for a dental washer as in claim 4, wherein: the piston seat comprises a seat body and a rubber body, and the rubber body is arranged at one end of the seat body, which is far away from the motor; the seat body comprises a connecting part and a passive part which are connected into a whole, wherein the connecting part is used for being attached to the rubber body, and the peripheral wall of the passive part is molded into the annular groove and is used for being in rotation-stopping fit with the bridging piece.

6. A water pump assembly for a dental washer as in claim 5, wherein: the rubber body comprises a main body, a deformation part and a yielding groove, and the main body is connected with the seat body through an attachment structure; the deformation part is formed on the main body and extends outwards in an inclined manner from the end part of the main body; the abdication groove is formed on the end face of one end of the main body far away from the seat body and used for the deformation part to be pressed and deformed inwards.

7. A water pump assembly for a dental washer as in claim 6, wherein: the attachment structure comprises an assembly groove and a hooking part, wherein the hooking part is formed at the end part of the connecting part and extends along the axial direction; the assembly groove is formed in the main body and is used for limiting and installing the hooking part.

8. A water pump assembly for a dental washer as in claim 1, wherein: the end face of one end of the guide rod, which is arranged in the ring groove, is an arc surface.