CN117989095A

CN117989095A - Direct-drive type electric drive device suitable for liquid pump device, liquid outlet system and tooth washing device

Info

Publication number: CN117989095A
Application number: CN202410168572.4A
Authority: CN
Inventors: 付家全
Original assignee: Guangdong Beizhi Health Technology Co ltd; Shanghai Feixiang Health Technology Co Ltd
Current assignee: Guangdong Beizhi Health Technology Co ltd; Shanghai Feixiang Health Technology Co Ltd
Priority date: 2024-02-06
Filing date: 2024-02-06
Publication date: 2024-05-07

Abstract

The invention relates to the technical field of oral cavity cleaning, and provides a direct-drive type electric drive device, a liquid outlet system and a tooth washing device suitable for a liquid pump device, which comprise the following components: a mounting structure; the power source is arranged on the mounting structure; the eccentric wheel assembly comprises an eccentric wheel and a push-pull transmission part, the eccentric wheel is coaxially connected with the driving end of the power source, and the push-pull transmission part is rotatably sleeved on the eccentric wheel; the swing transmission piece is arranged on the mounting structure in a swinging way, the swing transmission piece is provided with a first hinge end and a second hinge end which are arranged in an angle way, the first hinge end is hinged to the push-pull transmission piece, and the second hinge end is used for hinging a liquid pump acting element of the liquid pump device. The invention can omit a gear reduction mechanism, reduce the volume size of the liquid outlet system, improve the pulse frequency of the liquid outlet system and improve the cleaning efficiency of the liquid outlet system.

Description

Direct-drive type electric drive device suitable for liquid pump device, liquid outlet system and tooth washing device

Technical Field

The invention relates to the technical field of oral cavity cleaning, in particular to a direct-drive type electric drive device suitable for a liquid pump device, a liquid outlet system and a tooth washing device.

Background

With the improvement of living standard, people's consciousness of oral care is gradually improved, and the oral cavity cleaning tools on the market are more and more diversified, wherein the tooth flusher is one of the requisite small household appliances in families as a substitute of traditional dental floss. The basic working principle is that the pump body is utilized to pump water from the water tank, high-pressure pulse water flow with hundreds or thousands of times per minute is sprayed out through the nozzle to clean food residues, dental plaque, massage gingiva and the like in tooth gaps, and the oral cavity environment is improved.

The maximum pulse number of the existing water pump of the tooth flusher is usually 1200-1500 times/min. The motor typically rotates at 6000 rpm and the plunger or piston must be driven to reciprocate by a gear reduction mechanism.

The prior patent (application number: 202222569934. X) discloses a brushless direct-drive movement and a tooth washer, which are required to adopt an outer rotor brushless motor, and the manufacturing cost is high; referring to fig. 5 of the prior art patent, the transmission member has a relatively long linear link, resulting in a relatively large overall size of the brushless direct drive cartridge and the tooth irrigator.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention is to provide a direct-drive electric driving device, a liquid outlet system and a tooth cleaning device suitable for a liquid pump device, which can omit a gear reduction mechanism, reduce the volume size of the liquid outlet system, increase the pulse frequency of the liquid outlet system, and increase the cleaning efficiency of the liquid outlet system.

In order to solve the above technical problems, the present invention provides a direct-drive electric drive device suitable for a liquid pump device, comprising:

a mounting structure;

The power source is arranged on the mounting structure;

the eccentric wheel assembly comprises an eccentric wheel and a push-pull transmission part, the eccentric wheel is coaxially connected with the driving end of the power source, and the push-pull transmission part is rotatably sleeved on the eccentric wheel;

The swing transmission piece is arranged on the mounting structure in a swinging way and is provided with a first hinge end and a second hinge end which are arranged in an angle way, the first hinge end is hinged to the push-pull transmission piece, and the second hinge end is used for hinging a liquid pump acting element of the liquid pump device;

Under the drive of the power source, the eccentric wheel makes the swinging transmission piece swing reciprocally through the push-pull transmission piece, so that the liquid pump acting element can do the suction stroke or the liquid discharge stroke.

Further, the swing transmission piece comprises a first rocker arm and a second rocker arm which are arranged in an angle mode and synchronously swing, the outer end of the first rocker arm forms the first hinge end, and the outer end of the second rocker arm forms the second hinge end.

Further, the power source is a motor, and the eccentric wheel is directly sleeved and fixed on an output shaft of the motor.

Further, the eccentric wheel assembly further comprises a bearing, and the bearing is arranged between the eccentric wheel and the push-pull transmission part.

Further, a connecting boss is arranged on one end face of the eccentric wheel and is connected with the driving end of the power source through a fastening piece.

Further, the connecting boss is provided with a radial through threaded hole, and a fastening piece is arranged in the threaded hole.

The invention also provides a liquid outlet system, comprising:

The liquid pump device comprises a pump shell, a liquid pump cavity arranged in the pump shell and a liquid pump acting element arranged in the liquid pump cavity in a sliding manner;

the liquid inlet channel is communicated with the pump cavity of the liquid pump cavity through a liquid inlet one-way valve;

the liquid outlet channel is communicated with the pump cavity of the liquid pump cavity through a liquid outlet one-way valve;

the direct-drive type electric drive device suitable for the liquid pump device is characterized in that the mounting structure is formed on the pump shell.

Further, the central axis of the driving end of the power source is coincident with the central axis of the liquid pump cavity, and the swing axis of the swing transmission piece is perpendicular to the central axis of the liquid pump cavity.

Further, the liquid pump working element is a plunger, and the head of the plunger is provided with a sealing lip.

The invention also provides a tooth-rinsing device, which comprises the liquid outlet system.

As described above, the direct-drive electric drive device, the liquid outlet system and the tooth cleaning device suitable for the liquid pump device have the following beneficial effects: the main innovation point of the invention is that: first, there is no gear reduction mechanism between the power source and the working element of the liquid pump, so that the transmission structure is simplified, and the movement frequency of the working element of the liquid pump is consistent with the rotation speed of the power source, so that the pulse frequency of the liquid outlet system is increased, and the cleaning efficiency of the liquid outlet system is improved. The second point is that the eccentric wheel is coaxially connected with the driving end of the power source, the swing transmission piece is provided with a first hinge end and a second hinge end which are arranged in an angle, the first hinge end is hinged with the push-pull transmission piece, the second hinge end is used for hinging a liquid pump working element of the liquid pump device, and the arrangement is that the central line of the output end of the power source is basically parallel to the central line of the liquid pump working element, so that the whole layout of a liquid outlet system is convenient, the whole size of the liquid outlet system, especially the size in the height direction, can be further reduced, and the portability of the liquid outlet system is improved. Therefore, the direct-drive type electric drive device suitable for the liquid pump device can omit a gear reduction mechanism, reduce the volume size of a liquid outlet system, improve the pulse frequency of the liquid outlet system and improve the cleaning efficiency of the liquid outlet system.

Drawings

FIG. 1 is a front view of a liquid discharge system according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 4 is a schematic diagram showing the connection of a direct drive electric drive device and a liquid pump working element;

fig. 5 shows an exploded view of the eccentric assembly.

Description of element reference numerals

1. Liquid pump device

11. Liquid pump cavity

12. Liquid pump working element

121. Sealing lip

13. Pump cavity

14. Pump case

2. Liquid inlet one-way valve

3. Liquid inlet channel

4. Liquid outlet one-way valve

5. Liquid outlet channel

6. Direct-drive type electric drive device

61. Power source

611. Output shaft

62. Eccentric wheel assembly

621. Eccentric wheel

622. Push-pull driving medium

623. Bearing

624. Connection boss

624A threaded hole

63. Swing driving piece

631. First rocker arm

632. Second rocker arm

7. Nozzle

Detailed Description

Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the invention, which is defined by the appended claims, but rather by the claims, unless otherwise indicated, and unless otherwise indicated, all changes in structure, proportions, or otherwise, used by those skilled in the art, are included in the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.

As shown in fig. 1 and 2, the present invention provides a liquid outlet system, comprising:

The liquid pump device 1, the liquid pump device 1 comprises a pump shell 14, a liquid pump cavity 11 arranged in the pump shell 14, and a liquid pump working element 12 arranged in the liquid pump cavity 11 in a sliding manner;

the liquid inlet channel 3, the liquid inlet channel 3 is communicated with a pump cavity 13 of the liquid pump cavity 11 through the liquid inlet one-way valve 2;

The liquid outlet flow passage 5, the liquid outlet flow passage 5 is communicated with a pump cavity 13 of the liquid pump cavity 11 through a liquid outlet one-way valve 4;

The direct-drive electric driving device is suitable for the liquid pump device, and the mounting structure of the direct-drive electric driving device is formed on the pump shell 14, and the direct-drive electric driving device is used for driving the liquid pump acting element 12 to do reciprocating motion, namely alternately doing a liquid suction stroke and a liquid discharge stroke.

As a liquid-absorbing and draining principle of the liquid-discharging system:

when the liquid pump working element 12 is pulled back to be a suction stroke by the direct-drive electric drive device, the internal pressure of the pump cavity 13 becomes small, the liquid inlet one-way valve 2 is switched to an open state, the liquid outlet one-way valve 4 is switched to a closed state, and liquid in the liquid inlet channel 3 can flow into the pump cavity 13.

When the liquid pump acting element 12 is pushed out by the direct-drive electric driving device to perform a liquid discharge stroke, the internal pressure of the pump cavity 13 is increased, the liquid inlet one-way valve 2 is switched to a closed state, the liquid outlet one-way valve 4 is switched to an open state, and liquid in the pump cavity 13 is extruded into the liquid outlet flow passage 5 by the liquid pump acting element 12 and finally is sprayed out through the nozzle 7.

In order to increase the maximum pulse number of the liquid outlet system, the gear reduction mechanism is omitted and the overall size of the liquid outlet system is reduced, and the direct-drive electric driving device suitable for the liquid pump device comprises:

a mounting structure;

a power source 61, the power source 61 being provided to the mounting structure;

Eccentric wheel assembly 62, eccentric wheel assembly 62 includes eccentric wheel 621 and push-pull transmission piece 622, eccentric wheel 621 is connected to the drive end of power source 61 coaxially, push-pull transmission piece 622 is rotatably sleeved on eccentric wheel 621;

The swing transmission member 63 is arranged on the mounting structure in a swinging way, the swing transmission member 63 is provided with a first hinge end and a second hinge end which are arranged at an angle, the first hinge end is hinged to the push-pull transmission member 622, and the second hinge end is used for hinging the liquid pump working element 12 of the liquid pump device 1;

under the driving of the power source 61, the eccentric wheel 621 makes the swing driving member 63 swing reciprocally through the push-pull driving member 622, so that the liquid pump working element 12 can perform the suction stroke or the liquid discharge stroke.

In the direct drive type electric drive device applied to the liquid pump device of the present invention, the mounting structure may be integrally formed with the pump housing 14, or may be mounted to the pump housing 14 via a connection assembly. The power source 61 may be a variety of motors or other small drives. When the driving end of the power source 61 rotates, the eccentric wheel 621 rotates synchronously with the driving end, and because the eccentric wheel 621 has an eccentric distance from the center line of the driving end and the center line of the eccentric wheel 621, and because the push-pull transmission piece 622 is circumferentially restrained by the swing transmission piece 63, a rotation matching relationship occurs between the eccentric wheel 621 and the push-pull transmission piece 622, and at the same time, the eccentric wheel 621 converts torque into push-pull acting force through the push-pull transmission piece 622, so that the swing transmission piece 63 swings reciprocally around the self swinging end at a high speed, and the liquid pump acting element 12 is driven to do a liquid suction stroke or a liquid discharge stroke.

The main innovation point of the invention is that: first, there is no gear reduction mechanism between the power source 61 and the liquid pump working element 12, so that the transmission structure is simplified, and the movement frequency of the liquid pump working element 12 is consistent with the rotation speed of the power source 61, so that the pulse frequency of the liquid outlet system is increased, and the cleaning efficiency of the liquid outlet system is improved. For example, if the rotation speed of the output end of the power source 61 is 6000 rpm, the maximum pulse number of the liquid outlet system is 6000 rpm; if the rotation speed of the output end of the power source 61 is 5000 rpm, the maximum pulse number of the liquid outlet system is 5000 rpm. The second point is that, because the eccentric wheel 621 is coaxially connected to the driving end of the power source 61, the swing transmission member 63 has a first hinge end and a second hinge end which are arranged at an angle, the first hinge end is hinged to the push-pull transmission member 622, and the second hinge end is used for hinging the liquid pump working element 12 of the liquid pump device 1, so that the central line of the output end of the power source 61 is basically parallel to the central line of the liquid pump working element 12, the overall layout of the liquid outlet system is facilitated, the overall size of the liquid outlet system, especially the size in the height direction, can be further reduced, and the portability of the liquid outlet system is improved.

Therefore, the direct-drive type electric drive device suitable for the liquid pump device can omit a gear reduction mechanism, reduce the volume size of a liquid outlet system, improve the pulse frequency of the liquid outlet system and improve the cleaning efficiency of the liquid outlet system.

Further, in order to avoid the motion interference between the swing transmission member 63 and other parts as much as possible and improve the structural compactness of the direct-drive electric driving device, the swing transmission member 63 includes a first swing arm 631 and a second swing arm 632 that are disposed at an angle and swing synchronously, the outer end of the first swing arm 631 forms the first hinge end, and the outer end of the second swing arm 632 forms the second hinge end. Preferably, because the push-pull force of the push-pull transmission member 622 on the first rocker arm 631 is almost horizontal, the push-pull force of the second rocker arm 632 on the liquid pump working element 12 is almost vertical, and the included angle between the first rocker arm 631 and the second rocker arm 632 is 90 degrees.

Further, to facilitate replacement and maintenance of the power source 61, the power source 61 is a conventional motor, and the eccentric wheel 621 is directly sleeved and fixed on the output shaft 611 of the motor.

Further, as shown in fig. 3 and 5, in order to reduce the resistance and improve the transmission efficiency, the eccentric assembly 62 further includes a bearing 623, and the bearing 623 is disposed between the eccentric 621 and the push-pull transmission 622.

Further, in order to facilitate the fixation of the eccentric wheel 621 to the driving end of the power source 61, a connection boss 624 is provided on one end surface of the eccentric wheel 621, and the connection boss 624 is connected to the driving end of the power source 61 through a fastening member (not shown).

Further, the connecting boss 624 is provided with a threaded hole 624a that penetrates radially, and a fastening member is provided in the threaded hole 624 a. When assembled, the fastener is threaded into the threaded bore 624a until the end of the fastener abuts the drive end of the power source 61.

Further, in order to improve the compactness of the liquid outlet system, the central axis of the driving end of the power source 61 is coincident with the central axis of the liquid pump cavity 11, and the swing axis of the swing transmission member 63 is perpendicular to the central axis of the liquid pump cavity 11.

Since the swing transmission member 63 swings reciprocally, the working element 12 of the liquid pump slides up and down, in order to avoid the motion interference between the swing transmission member 63 and the working element 12 of the liquid pump, the following specific embodiments may be used:

First embodiment: the liquid pump chamber 11 is made of hard material, the liquid pump working element 12 is a plunger, and the plunger is made of plastic with certain elasticity, such as polyethylene PE.

Second embodiment: the liquid pump working element 12 is a plunger, a certain gap exists between the plunger and the liquid pump cavity 11, and the plunger is allowed to swing slightly relative to the liquid pump cavity 11; the head of the plunger has a sealing lip 121 ensuring fluid tightness.

Third embodiment: the swing angle range of the swing transmission member 63 is a relatively small acute angle, for example, 5 degrees to 10 degrees.

Fourth embodiment: the second hinged end of the swinging transmission member 63 is connected with the tail end of the liquid pump working element 12 through a spherical hinge structure, and a certain gap exists at the spherical hinge matching position of the swinging transmission member 63 and the liquid pump working element 12.

Since the swing transmission member 63 is reciprocally swing, the push-pull transmission member 622 is horizontally disposed, and in order to avoid the motion interference between the swing transmission member 63 and the push-pull transmission member 622, the following embodiments may be adopted:

First embodiment: the first hinged end of the swinging transmission member 63 is connected with the push-pull transmission member 622 through a spherical hinge structure, and a certain gap exists at the spherical hinge matching position of the swinging transmission member 63 and the push-pull transmission member 622.

Second embodiment: the swing angle range of the swing transmission member 63 is a relatively small acute angle, for example, 5 degrees to 10 degrees.

The invention also provides a tooth-rinsing device, which comprises the liquid outlet system. The tooth-flushing device has the advantages of higher jet pulse times, better cleaning effect and more convenience in carrying.

In summary, the invention can omit a gear reduction mechanism, reduce the volume size of the liquid outlet system, improve the pulse times of the liquid outlet system and improve the cleaning efficiency of the liquid outlet system. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A direct drive electric drive apparatus suitable for use in a liquid pump apparatus, comprising:

a mounting structure;

A power source (61), wherein the power source (61) is arranged on the mounting structure;

The eccentric wheel assembly (62), the eccentric wheel assembly (62) comprises an eccentric wheel (621) and a push-pull transmission piece (622), the eccentric wheel (621) is coaxially connected to the driving end of the power source (61), and the push-pull transmission piece (622) is rotatably sleeved on the eccentric wheel (621);

the swinging transmission piece (63) can be arranged on the mounting structure in a swinging way, the swinging transmission piece (63) is provided with a first hinge end and a second hinge end which are arranged in an angle way, the first hinge end is hinged to the push-pull transmission piece (622), and the second hinge end is used for hinging a liquid pump acting element (12) of the liquid pump device (1);

Under the drive of the power source (61), the eccentric wheel (621) enables the swing transmission piece (63) to swing back and forth through the push-pull transmission piece (622) so as to enable the liquid pump working element (12) to do a suction stroke or a liquid discharge stroke.

2. The direct drive electric drive device suitable for a liquid pump device according to claim 1, wherein: the swing transmission part (63) comprises a first swing arm (631) and a second swing arm (632) which are arranged in an angle mode and swing synchronously, the outer end of the first swing arm (631) forms the first hinge end, and the outer end of the second swing arm (632) forms the second hinge end.

3. The direct drive electric drive device suitable for a liquid pump device according to claim 1, wherein: the power source (61) is a motor, and the eccentric wheel (621) is directly sleeved and fixed on an output shaft (611) of the motor.

4. The direct drive electric drive device suitable for a liquid pump device according to claim 1, wherein: the eccentric wheel assembly (62) further comprises a bearing (623), and the bearing (623) is arranged between the eccentric wheel (621) and the push-pull transmission piece (622).

5. The direct drive electric drive device suitable for a liquid pump device according to claim 1, wherein: a connecting boss (624) is arranged on one end face of the eccentric wheel (621), and the connecting boss (624) is connected with the driving end of the power source (61) through a fastening piece.

6. The direct drive electric drive apparatus for a liquid pump apparatus according to claim 5, wherein: the connecting boss (624) is provided with a threaded hole (624 a) which is penetrated in the radial direction, and a fastening piece is arranged in the threaded hole (624 a).

7. A liquid discharge system, characterized by: comprising the following steps:

the liquid pump device (1), the liquid pump device (1) comprises a pump shell (14), a liquid pump cavity (11) arranged on the pump shell (14), and a liquid pump working element (12) arranged in the liquid pump cavity (11) in a sliding manner;

The liquid inlet flow passage (3), the liquid inlet flow passage (3) is communicated with a pump cavity (13) of the liquid pump cavity (11) through a liquid inlet one-way valve (2);

the liquid outlet channel (5), the liquid outlet channel (5) is communicated with the pump cavity (13) of the liquid pump cavity (11) through the liquid outlet one-way valve (4);

A direct drive electric drive for a liquid pump apparatus according to any one of claims 1 to 6, the mounting structure being formed in a pump housing (14).

8. The tapping system as set forth in claim 7, wherein: the central axis of the driving end of the power source (61) is coincident with the central axis of the liquid pump cavity (11), and the swing axis of the swing transmission piece (63) is perpendicular to the central axis of the liquid pump cavity (11).

9. The tapping system as set forth in claim 7, wherein: the liquid pump working element (12) is a plunger, the head of which has a sealing lip (121).

10. A tooth-rinsing device, characterized in that: a tapping system comprising any one of claims 7 to 9.