阅读说明：本技术 冲牙器液泵装置 (Liquid pump device of tooth-rinsing device ) 是由 王嘉楠 于 2020-05-15 设计创作，主要内容包括：本发明提供一种冲牙器液泵装置,包括：驱动器；圆柱凸轮机构,圆柱凸轮机构包括圆柱凸轮和从动体,圆柱凸轮与输出轴同轴固连,圆柱凸轮的外周壁上开设有首尾闭合且迂回延伸的轨迹槽；泵体,泵体罩设在圆柱凸轮外并且与驱动本体连接；活塞,活塞包括活塞管和活塞头,活塞管同轴套设在圆柱凸轮上,活塞管与圆柱凸轮滑动配合并且沿圆柱凸轮中心轴线滑动地设置在活塞腔内,活塞管上开设有与从动体相适配的容置约束孔,活塞头设在活塞管上并且与活塞腔液封滑动配合。本发明能够提高驱动器的传动效率,提升泵体内液体的动力,更为重要的是,冲牙器液泵装置的整体尺寸更加小巧紧凑,动力输出更加顺畅平稳,因运行而产生的噪声更小。(The invention provides a liquid pump device of a tooth rinsing device, comprising: a driver; the cylindrical cam mechanism comprises a cylindrical cam and a driven body, the cylindrical cam is coaxially and fixedly connected with the output shaft, and the outer peripheral wall of the cylindrical cam is provided with a track groove which is closed end to end and extends in a circuitous manner; the pump body is covered outside the cylindrical cam and is connected with the driving body; the piston comprises a piston tube and a piston head, the piston tube is coaxially sleeved on the cylindrical cam, the piston tube is in sliding fit with the cylindrical cam and is arranged in the piston cavity in a sliding mode along the central axis of the cylindrical cam, the piston tube is provided with an accommodating constraint hole matched with the driven body, and the piston head is arranged on the piston tube and is in liquid-tight sliding fit with the piston cavity. The invention can improve the transmission efficiency of the driver and improve the power of liquid in the pump body, and more importantly, the overall size of the liquid pump device of the tooth flushing device is smaller and more compact, the power output is smoother and more stable, and the noise generated by operation is smaller.)

1. A dental irrigator fluid pump device, comprising:

the driver (1), the driver (1) includes the driving body (11) and stretches out of the output shaft (12) of the driving body (11);

the cylindrical cam mechanism (2), the cylindrical cam mechanism (2) comprises a cylindrical cam (21) and a driven body (22), the cylindrical cam (21) is coaxially and fixedly connected with the output shaft (12), a track groove (211) which is closed end to end and extends in a circuitous manner is formed in the outer peripheral wall of the cylindrical cam (21), and the driven body (22) is arranged in the track groove (211) in a moving manner along the extending direction of the track groove (211);

the pump body (3), the pump body (3) has the piston cavity (31) with the opening facing the driver (1), the pump body (3) is covered outside the cylindrical cam (21) and is connected with the driving body (11);

the piston (4), the piston (4) includes piston tube (41) and piston head (42), the coaxial cover of piston tube (41) is established on the cylindrical cam (21), piston tube (41) and cylindrical cam (21) sliding fit and set up in piston chamber (31) along the central axis of cylindrical cam (21) with sliding, piston tube (41) offer with driven body (22) looks adaptation hold about hole (411), the piston head (42) is established on piston tube (41) and with piston chamber (31) liquid seal sliding fit;

when an output shaft (12) of the driver (1) rotates in a fixed-axis mode, the cylindrical cam (21) rotates in a fixed-axis mode along with the output shaft (12), the driven body (22) reciprocates in a direction parallel to the central axis of the cylindrical cam (21) under the combined constraint of the track groove (211) and the containing constraint hole (411), and the piston tube (41) reciprocates in the piston cavity (31) along the central axis of the cylindrical cam (21).

2. The dental irrigator fluid pump device of claim 1, wherein: the driver (1) is a motor.

3. The dental irrigator fluid pump device of claim 1, wherein: one side of the pump body (3) far away from the driving body (11) is provided with a liquid inlet interface part (32) and a liquid outlet interface part (33), and the liquid inlet interface part (32) and the liquid outlet interface part (33) are both communicated with the piston cavity (31).

4. The dental irrigator fluid pump device of claim 1, wherein: the piston pump is characterized in that a sliding groove (34) is formed in the pump body (3), the sliding groove (34) extends in a direction parallel to the central axis of the cylindrical cam (21), and a protruding portion (412) in sliding fit with the sliding groove (34) is formed in the outer peripheral wall of the piston pipe (41).

5. The dental irrigator fluid pump device of claim 4, wherein: the protruding part (412) is sleeved with a wear-resistant sleeve (413).

6. The dental irrigator fluid pump device of claim 5, wherein: the cross section of the sliding groove (34) is T-shaped, and the wear-resistant sleeve (413) is in a two-stage stepped shaft shape matched with the sliding groove (34).

7. The dental irrigator fluid pump device of claim 1, wherein: the driven body (22) is spherical or blocky.

8. The dental irrigator fluid pump device of claim 1, wherein: the track groove (211) is in a periodic roundabout curve shape.

9. The dental irrigator fluid pump device of claim 1, wherein: one end of the piston tube (41) far away from the driving body (11) is provided with a clamping installation part (414), and the piston head (42) is detachably clamped on the clamping installation part (414).

10. The dental irrigator fluid pump device of claim 1, wherein: the pump body (3) is provided with a connecting flange (35) at the opening of the piston cavity (31), and a fastener (36) penetrating through the connecting flange (35) fastens the connecting flange (35) on the driving body (11).

Technical Field

The invention relates to the field of oral care appliances, in particular to a liquid pump device of a tooth flushing device.

Background

The existing tooth flusher transmission pump mainly drives a transmission wheel through a gear, and the transmission wheel drives a piston to do reciprocating motion through a connecting rod, so that liquid in a water flow passage of a pump body is pressurized and transmitted. The transmission mechanism generally comprises a first-stage transmission device for reducing the rotating speed and a second-stage transmission device for converting the rotating power into reciprocating motion, a kinematic pair of the transmission mechanism can generate larger noise, particularly, when the kinematic pair of the first-stage transmission device is formed by a rigid transmission piece, namely, a gear directly transmitted by a motor is meshed with an end tooth, the generated noise is larger, and the transmission pump is troublesome in maintenance and difficult to maintain.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a pump device for a dental irrigator, which can improve the transmission efficiency of a driver and increase the power of liquid in the pump body, and more importantly, the pump device for a dental irrigator has smaller and more compact overall size, smoother and more stable power output, less noise generated by operation, and better comfort for users.

In order to solve the above-mentioned technical problem, the present invention provides a liquid pump device for a dental irrigator, comprising:

the driver comprises a driving body and an output shaft extending out of the driving body;

the cylindrical cam mechanism comprises a cylindrical cam and a driven body, the cylindrical cam is coaxially and fixedly connected with the output shaft, a track groove which is closed end to end and extends in a circuitous manner is formed in the outer peripheral wall of the cylindrical cam, and the driven body is movably arranged in the track groove along the extending direction of the track groove;

the pump body is provided with a piston cavity with an opening facing the driver, and the pump body is covered outside the cylindrical cam and is connected with the driving body;

the piston comprises a piston tube and a piston head, the piston tube is coaxially sleeved on the cylindrical cam, the piston tube is in sliding fit with the cylindrical cam and is arranged in the piston cavity in a sliding manner along the central axis of the cylindrical cam, the piston tube is provided with an accommodating and constraining hole matched with the driven body, and the piston head is arranged on the piston tube and is in liquid-sealing sliding fit with the piston cavity;

when an output shaft fixed shaft of the driver rotates, the cylindrical cam rotates along with the output shaft fixed shaft, the driven body reciprocates along the direction parallel to the central axis of the cylindrical cam under the joint constraint of the track groove and the containing constraint hole, and the piston pipe reciprocates in the piston cavity along the central axis of the cylindrical cam.

Preferably, the drive is a motor.

Preferably, one side of the pump body, which is far away from the driving body, is provided with a liquid inlet interface part and a liquid outlet interface part, and both the liquid inlet interface part and the liquid outlet interface part are communicated with the piston cavity.

Preferably, the pump body is provided with a sliding groove, the sliding groove extends along a direction parallel to the central axis of the cylindrical cam, and the outer peripheral wall of the piston tube is provided with a projection part in sliding fit with the sliding groove.

Preferably, the protruding part is sleeved with a wear-resistant sleeve.

Preferably, the cross section of the sliding groove is T-shaped, and the wear-resistant sleeve is in a two-stage stepped shaft shape matched with the sliding groove.

Preferably, the follower is spherical or massive.

Preferably, the track groove is in a periodically circuitous curve shape.

Preferably, the piston tube is far away from the one end of drive body and has the joint installation department, piston head detachably card is established on the joint installation department.

Preferably, the pump body is provided with a connecting flange at the opening of the piston cavity, and a fastener penetrating through the connecting flange fastens the connecting flange on the driving body.

As described above, the liquid pump device for a dental irrigator according to the present invention has the following advantageous effects: in the invention, when in use, the output shaft of the driver rotates along with the fixed shaft of the output shaft. Because the piston pipe can only be arranged in the piston cavity along the central axis of the cylindrical cam in a sliding manner, one part of the driven body is positioned in the track groove, the other part of the driven body is positioned in the containing constraint hole, the driven body reciprocates along the direction parallel to the central axis of the cylindrical cam under the joint constraint of the track groove and the containing constraint hole, and then the piston pipe reciprocates in the piston cavity along the central axis of the cylindrical cam, so that the liquid in the pump body obtains more optimized power output. Therefore, compared with the gear transmission type water pump of the traditional tooth flusher, the liquid pump device of the tooth flusher can improve the transmission efficiency of the driver and improve the power of liquid in the pump body, and more importantly, the liquid pump device of the tooth flusher is smaller and more compact in overall size, smoother and more stable in power output, and lower in noise generated by operation, so that the use comfort of a user is better.

Drawings

FIG. 1 is a perspective view of a liquid pump apparatus for a dental irrigator of the present invention;

FIG. 2 is an exploded view of the liquid pump assembly of the dental irrigator of the present invention;

FIG. 3 shows a cross-sectional view of the liquid pump apparatus of the dental irrigator of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3;

fig. 5 shows a perspective view of the cylindrical cam mechanism.

Description of the element reference numerals

1 driver

11 drive body

12 output shaft

2 cylindrical cam mechanism

21 cylindrical cam

211 track groove

22 driven body

3 Pump body

31 piston chamber

32 liquid inlet interface part

33 liquid outlet interface part

34 sliding groove

35 connecting flange

36 fastener

4 piston

41 piston tube

411 holding restriction hole

412 raised part

413 wear-resistant sleeve

414 clamping installation part

42 piston head

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions that the present disclosure can be implemented, so that the present disclosure is not limited to the technical essence, and any structural modifications, ratio changes, or size adjustments should still fall within the scope of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

As shown in fig. 1 to 5, the present invention provides a liquid pump device for a dental irrigator, comprising:

the driver 1, the driver 1 includes the driving body 11 and stretches out of the output shaft 12 of the driving body 11;

the cylindrical cam mechanism 2 (see fig. 5 specifically), the cylindrical cam mechanism 2 includes a cylindrical cam 21 and a driven body 22, the cylindrical cam 21 is coaxially and fixedly connected with the output shaft 12, a track groove 211 which is closed end to end and extends in a circuitous manner is formed in the peripheral wall of the cylindrical cam 21, and the driven body 22 is movably arranged in the track groove 211 along the extending direction of the track groove 211;

a pump body 3, the pump body 3 is provided with a piston cavity 31 with an opening facing the driver 1, the pump body 3 is covered outside the cylindrical cam 21 and is connected with the driving body 11;

the piston 4 comprises a piston tube 41 and a piston head 42, the piston tube 41 is coaxially sleeved on the cylindrical cam 21, the piston tube 41 is in sliding fit with the cylindrical cam 21 and is arranged in the piston cavity 31 along the central axis of the cylindrical cam 21 in a sliding manner, the piston tube 41 is provided with an accommodating and constraining hole 411 matched with the driven body 22, and the piston head 42 is arranged on the piston tube 41 and is in liquid-tight sliding fit with the piston cavity 31;

when the output shaft 12 of the driver 1 rotates in a fixed axis manner, the cylindrical cam 21 rotates in a fixed axis manner along with the output shaft 12, the driven body 22 reciprocates in a direction parallel to the central axis of the cylindrical cam 21 under the combined constraint of the track groove 211 and the accommodation constraint hole 411, and the piston tube 41 reciprocates in the piston cavity 31 along the central axis of the cylindrical cam 21.

In the present invention, in use, the output shaft 12 of the driver 1 is fixed in rotation and the cylindrical cam 21 is fixed in rotation with the output shaft 12. Since the piston tube 41 is only slidably disposed in the piston cavity 31 along the central axis of the cylindrical cam 21, and one part of the driven body 22 is disposed in the track groove 211, and the other part of the driven body 22 is disposed in the accommodating restriction hole 411, the driven body 22 reciprocates in a direction parallel to the central axis of the cylindrical cam 21 under the combined restriction of the track groove 211 and the accommodating restriction hole 411, so that the piston tube 41 reciprocates in the piston cavity 31 along the central axis of the cylindrical cam 21, and the liquid in the pump body 3 obtains a more optimized power output. Therefore, compared with the traditional gear transmission type water pump of the tooth flushing device, the liquid pump device of the tooth flushing device can improve the transmission efficiency of the driver 1 and improve the power of liquid in the pump body 3, and more importantly, the whole size of the liquid pump device of the tooth flushing device is smaller and more compact, the power output is smoother and more stable, the noise generated by operation is smaller, and the use comfort of a user is better.

As an assembling method of the above dental irrigator liquid pump device: s1, the output shaft 12 of the driver 1 is keyed with the cylindrical cam 21 (e.g., the cylindrical cam 21 is assembled with the output shaft 12 through the splines on the output shaft 12); s2, the output shaft 12 is fixedly connected with the cylindrical cam 21 through glue; s3, the piston tube 41 is sleeved on the cylindrical cam 21, and the accommodating and restraining hole 411 is aligned with the track groove 211; s4, the driven body 22 is inserted into the receiving and constraining hole 411, and a part of the driven body 22 is located in the track groove 211 and another part of the driven body 22 is located in the receiving and constraining hole 411; s5, the piston 4 is inserted into the piston chamber 31 of the pump body 3, and the pump body 3 is connected to the drive body 11.

The number of the driven bodies 22 may be one or more; all the accommodating restriction holes 411 correspond to all the driven bodies 22 one to one.

The driver 1 has various types, and in order to facilitate the maintenance and replacement of the driver 1 by workers, the driver 1 is a motor. Further, in order to reduce the size of the drive 1, the motor may be a micro electric motor.

In order to supply liquid (the liquid can be water or tooth cleaning liquid medicine), the side of the pump body 3 away from the driving body 11 is provided with a liquid inlet interface part 32 and a liquid outlet interface part 33, and the liquid inlet interface part 32 and the liquid outlet interface part 33 are both communicated with the piston cavity 31. Specifically, a liquid inlet valve is disposed in the liquid inlet interface part 32, and a liquid outlet valve is disposed in the liquid outlet interface part 33. When the piston 4 moves towards the direction close to the driving body 11, the liquid outlet valve is closed, and the liquid inlet valve is opened, so that the liquid pumping function is realized; when the piston 4 moves towards the direction far away from the driving body 11, the liquid outlet valve is opened, and the liquid inlet valve is closed, so that the liquid supply function is realized.

As shown in fig. 3 and 4, the pump body 3 is provided with a slide groove 34, the slide groove 34 extends in a direction parallel to the central axis of the cylindrical cam 21, and the outer peripheral wall of the piston tube 41 is provided with a projection 412 which is slidably fitted into the slide groove 34. Further, in order to facilitate the protrusion 412 to slide into the sliding groove 34, one end of the sliding groove 34 facing the driving body 11 is open, and the other end of the sliding groove 34 facing away from the driving body 11 is closed. In addition, one or more projections 412 may be provided; when the number of the protrusions 412 is plural, all the protrusions 412 are circumferentially evenly distributed on the outer circumferential wall of the piston tube 41.

In order to avoid the abrasion of the protrusion 412, a wear-resistant sleeve 413 is sleeved on the protrusion 412. Further, in order to reduce the friction power consumption between the wear-resistant sleeve 413 and the sliding groove 34, the wear-resistant sleeve 413 may be made of a material with a low friction coefficient.

In order to improve the sliding smoothness of the piston tube 41, the cross section of the sliding groove 34 is T-shaped, and the wear-resistant sleeve 413 is in a two-step shaft shape adapted to the sliding groove 34.

The driven body 22 has a spherical or block shape. To further reduce noise during operation of the pump assembly, follower 22 is a ball bearing (e.g., steel ball).

The track groove 211 is formed in a periodically winding curve shape so as to periodically reciprocate the piston 4.

In order to facilitate the assembly and disassembly of the piston tube 41 and the piston head 42, the piston tube 41 has a snap-fit mounting portion 414 at an end thereof remote from the driving body 11, and the piston head 42 is detachably snap-fitted to the snap-fit mounting portion 414.

In order to detachably attach the pump body 3 to the driving body 11, the pump body 3 has a connecting flange 35 at an opening of the piston chamber 31, and the connecting flange 35 is fastened to the driving body 11 by a fastening member 36 inserted into the connecting flange 35.

In conclusion, the liquid pump device of the tooth-rinsing device can improve the transmission efficiency of the driver and the power of liquid in the pump body, and more importantly, the liquid pump device of the tooth-rinsing device has the advantages of smaller and more compact overall size, smoother and more stable power output, less noise generated by operation and better use comfort of users. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.