Motor shaft assembly and cleaning device

Abstract

The invention belongs to the technical field of cleaning, and discloses a motor shaft assembly and a cleaning device.The motor shaft assembly comprises a motor shaft and an electrode slice connecting assembly.The motor shaft is internally provided with a mounting channel, the two ends of the mounting channel are provided with a first opening and a second opening respectively, and the electrode slice connecting assembly penetrates through the mounting channel; one end of the electrode plate connecting assembly extends out of the first opening, and the other end of the electrode plate connecting assembly extends out of the second opening. According to the cleaning device, the electrode plate connecting assembly is installed in the motor shaft, the motor shaft is used for protecting the electrode plate connecting assembly, the electrode plate connecting assembly is prevented from being damaged, and the service life of the cleaning device is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of cleaning technology, in particular to a motor shaft assembly and a cleaning device. Background Art

[0002] Cleaning products such as electric toothbrushes and brushes for washing pots and pans use micro motors to drive actuators, which wash the cleaning targets. For example, electric toothbrushes use micro motors to drive the toothbrush head to vibrate at high frequency, and use the toothbrush head to automatically wash the teeth at high frequency. In order to achieve functions such as detection or lighting, electrical components such as sensors or LED lights are usually set on the toothbrush head. Sensors, LED lights and other electrical components need to use FPC for data transmission and power supply. However, FPC is not convenient to install on electric toothbrushes, and the protective effect is not good. When FPC is damaged, the service life of the electric toothbrush is shortened. Summary of the invention

[0003] The purpose of the present invention is to provide a motor shaft assembly and a cleaning device, wherein the electrode sheet connection assembly is installed into the interior of the motor shaft, and the motor shaft is used to protect the electrode sheet connection assembly to prevent damage to the electrode sheet connection assembly and ensure the service life of the cleaning device.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] In a first aspect, a motor shaft assembly is provided, including a motor shaft and an electrode sheet connection assembly, wherein an installation channel is provided inside the motor shaft, and a first opening and a second opening are provided at both ends of the installation channel respectively, and the electrode sheet connection assembly is passed through the installation channel, one end of the electrode sheet connection assembly extends from the first opening, and the other end of the electrode sheet connection assembly extends from the second opening.

[0006] As an optional technical solution, the mounting channel is provided with a fixing member, and the fixing member fixes the electrode sheet connecting assembly to the mounting channel.

[0007] As an optional technical solution, the fixing member seals the installation channel.

[0008] As an optional technical solution, the fixing member is waterproof glue.

[0009] As an optional technical solution, the motor shaft is made of hard material.

[0010] As an optional technical solution, the electrode sheet connection assembly further includes a wire portion, which is passed through the installation channel. The installation channel is provided with a sealing portion, which seals the installation channel and adheres and fixes the wire portion to the installation channel.

[0011] As an optional technical solution, a recessed groove is provided at one end of the motor shaft, and the electrode sheet connecting assembly includes a contact portion, which is accommodated in the recessed groove and is used for making electrical contact with the actuator.

[0012] As an optional technical solution, a bonding portion is provided between the contact portion and the bottom of the sink, and the bonding portion bonds and fixes the contact portion to the sink.

[0013] As an optional technical solution, an annular groove is provided on the outer peripheral wall of the motor shaft, and the annular groove is located between the first opening and the second opening, and the annular groove is used to limit the axial movement of the sealing ring.

[0014] As an optional technical solution, the motor shaft passes through the motor body, the mounting channel passes through the motor shaft in the axial direction, and the second opening is located at the end of the motor shaft in the axial direction.

[0015] As an optional technical solution, the motor shaft includes a first section and a second section, the second section is axially inserted in the motor body, the first section is connected to the second section and the first section is located outside the motor body, the mounting channel is opened in the first section, and the second opening is opened in the first section.

[0016] As an optional technical solution, the first section and the second section are integrally provided, or the first section and the second section are detachably fixedly connected.

[0017] In a second aspect, a cleaning device is provided, comprising a motor body and the motor shaft assembly as described above, wherein the motor shaft assembly is mounted on the motor body.

[0018] Beneficial effects of the present invention:

[0019] The motor shaft assembly and cleaning device provided by the present invention include a motor shaft and an electrode sheet connection assembly, an installation channel is provided inside the motor shaft, a first opening and a second opening are provided at both ends of the installation channel, the electrode sheet connection assembly is passed through the installation channel, one end of the electrode sheet connection assembly extends from the first opening, and the other end of the electrode sheet connection assembly extends from the second opening, a fixing member is provided inside the installation channel, and the fixing member fixes the electrode sheet connection assembly inside the installation channel.

[0020] The electrode sheet connection assembly is passed through the installation channel, and the motor shaft isolates and protects the electrode sheet connection assembly to prevent the electrode sheet connection assembly from colliding with other components, avoiding damage to the electrode sheet connection assembly and extending the service life of the cleaning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1is a structural schematic diagram of the motor shaft assembly described in Example 1;

[0022] Figure 2 is an exploded view of the motor shaft assembly described in Example 1;

[0023] Figure 3 yes Figure 2 A partial enlarged view of the middle L position;

[0024] Figure 4 is a cross-sectional view of the motor shaft assembly described in Example 1;

[0025] Figure 5 is an axial arrangement diagram of the contacts and the motor shaft described in the first embodiment;

[0026] Figure 6 is a schematic structural diagram of the motor shaft assembly described in Example 2;

[0027] Figure 7 is an exploded view of the motor shaft assembly described in the second embodiment;

[0028] Figure 8 is a cross-sectional view of the motor shaft assembly described in Embodiment 2;

[0029] Fig. 9 is a structural schematic diagram of the motor shaft assembly described in Example 3;

[0030] Fig.10 is an exploded view of the motor shaft assembly described in Embodiment 3;

[0031] Fig.11 It is a cross-sectional view of the motor shaft assembly described in Example 3.

[0032] In the figure:

[0033] 100, motor shaft assembly; 200, motor body;

[0034] 1. Motor shaft; 11. First opening; 12. Second opening; 13. Mounting channel; 14. Carrying platform; 15. Ring groove; 16. First section; 17. Second section; 18. Card groove; 19. Sinking groove; 110. Connecting groove; 111. Protective wall; 112. Notch;

[0035] 2. electrode sheet connection assembly; 21. wire portion; 22. contact portion; 221. contact;

[0036] 3. Fixing part; 31. Adhesive part; 32. Sealing part; 33. Connecting part; 34. Reinforcement part. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0041] Embodiment 1

[0042] like Figures 1 to 4 As shown, the motor shaft assembly 100 provided in this embodiment includes a motor shaft 1 and an electrode sheet connection assembly 2. An installation channel 13 is provided inside the motor shaft 1. A first opening 11 and a second opening 12 are respectively provided at both ends of the installation channel 13. The electrode sheet connection assembly 2 is inserted into the installation channel 13. One end of the electrode sheet connection assembly 2 extends from the first opening 11, and the other end of the electrode sheet connection assembly 2 extends from the second opening 12.

[0043] Specifically, the electrode sheet connection assembly 2 is passed through the installation channel 13, and the motor shaft 1 isolates and protects the electrode sheet connection assembly 2 to prevent the electrode sheet connection assembly 2 from colliding with other components, avoiding damage to the electrode sheet connection assembly 2, and extending the service life of the cleaning device.

[0044] The electrode sheet connection component 2 is a flexible circuit board with the functions of conducting electricity and transmitting data. The motor shaft 1 and the electrode sheet connection component 2 are assembled and matched, the motor shaft 1 transmits power to the actuator, and the electrode sheet connection component 2 transmits power to the actuator and transmits the detection signal obtained by the actuator.

[0045] Optionally, the installation channel 13 is provided with a fixing member 3 , and the fixing member 3 fixes the electrode sheet connection assembly 2 inside the installation channel 13 .

[0046] When the cleaning device is working, the motor shaft 1 vibrates at a high frequency along its own axial direction, and the fixing member 3 fixes the electrode sheet connecting assembly 2 to the motor shaft 1 , thereby preventing the electrode sheet connecting assembly 2 from being separated from the motor shaft 1 .

[0047] Optionally, the fixing member 3 is disposed on a side of the installation channel 13 close to the actuator to prevent the cleaning liquid from entering the first opening 11 and to avoid water accumulation in the first opening 11 and the formation of mold.

[0048] Optionally, the electrode sheet connection assembly 2 and the installation channel 13 are interference fit to ensure the installation stability of the electrode sheet connection assembly 2. Before the electrode sheet connection assembly 2 is fixed by the fixing member 3, the electrode sheet connection assembly 2 is installed into the installation channel 13 by interference fit to ensure the installation stability of the electrode sheet connection assembly 2.

[0049] Optionally, the fixing member 3 seals the installation channel 13 to prevent the cleaning liquid from flowing into the installation channel 13 from the first opening 11 and flowing out from the second opening 12 to corrode other electronic components of the cleaning device or cause short circuits in other electronic components.

[0050] In this embodiment, the fixing member 3 is waterproof glue. Liquid waterproof glue is injected into the installation channel 13 and solidified to form the fixing member 3. It has low cost and good sealing effect, and can fix the electrode sheet connection assembly 2 to the installation channel 13.

[0051] In some other embodiments, the fixing part 3 is a plastic part or a silicone part. The molded fixing part 3 is obtained, and then the fixing part 3 and the electrode sheet connecting component 2 are installed on the motor shaft 1 together. Alternatively, the fixing part 3 is obtained by injection molding around the electrode sheet connecting component 2, and then the fixing part 3 and the electrode sheet connecting component 2 are installed on the motor shaft 1 together.

[0052] Optionally, the motor shaft 1 is made of a hard material, such as steel or ceramic or a mixture of steel and ceramic, to ensure the structural strength of the motor shaft 1 .

[0053] Optionally, the electrode sheet connection assembly 2 further includes a wire portion 21, the wire portion 21 is inserted into the installation channel 13, and the installation channel 13 is provided with a sealing portion 32, the sealing portion 32 seals the installation channel 13 and adheres and fixes the wire portion 21 to the installation channel 13. After the wire portion 21 is inserted into the installation channel 13, liquid waterproof glue is injected into the installation channel 13, and the sealing portion 32 is formed after the liquid waterproof glue is cured, so as to seal the installation channel 13 to prevent water leakage, and fix the wire portion 21 to prevent the wire portion 21 from moving.

[0054] Optionally, a sink groove 19 is provided at one end of the motor shaft 1, and the electrode sheet connection assembly 2 further includes a contact portion 22, which is accommodated in the sink groove 19 and is used to make electrical contact with the actuator. When the cleaning device is working, the motor shaft 1 vibrates at a high frequency along its own axial direction, and the contact portion 22 is arranged in the sink groove 19, so that an external force in the axial direction cannot directly act on the contact portion 22 from one side, thereby preventing the electrode sheet connection assembly 2 from being lifted or broken.

[0055] Optionally, a bearing platform 14 is provided at one end of the motor shaft 1 having the first opening 11, and an extension plane of the bearing platform 14 is parallel to the central axis of the mounting channel 13. The actuator abuts against the bearing platform 14, the sink 19 is provided on the bearing platform 14, and the highest point of the contact portion 22 is not higher than the top surface of the bearing platform 14.

[0056] Optionally, a bonding portion 31 is provided between the contact portion 22 and the bottom of the sink 19, and the bonding portion 31 bonds and fixes the contact portion 22 to the sink 19. When the contact portion 22 is placed in the sink 19, a gap is formed between the contact portion 22 and the bottom of the sink 19, and then liquid waterproof glue is injected into the gap between the contact portion 22 and the bottom of the sink 19. After the liquid waterproof glue is cured, the bonding portion 31 is formed, and the contact portion 22 is bonded and fixed to the sink 19 to prevent the high-frequency vibration of the motor shaft 1 from bouncing the contact portion 22 away.

[0057] Optionally, the supporting platform 14 is further provided with a connecting groove 110, which connects the sink groove 19 and the installation channel 13. One end of the wire portion 21 extends out of the first opening 11 and passes through the connecting groove 110 to be connected to the contact portion 22. The liquid waterproof glue is solidified in the connecting groove 110 to form a connecting portion 33. The connecting portion 33 can enhance the connection stability between the wire portion 21 and the contact portion 22.

[0058] Optionally, a side of the sink groove 19 away from the connecting groove 110 is a protective wall 111 , and the protective wall 111 blocks an external force in the axial direction from being directly applied to the contact portion 22 .

[0059] Optionally, a notch 112 is provided on the protective wall 111. The notch 112, the connection groove 110 and the installation channel 13 are aligned and arranged. When processing the motor shaft 1, the middle part of the motor shaft 1 is directly processed along the axial direction to obtain the notch 112, the connection groove 110 and the installation channel 13. The processing technology is simple and the processing cost is low. When the motor shaft 1 is injected with glue, the liquid waterproof glue penetrates into the notch 112 and forms the reinforcement part 34, thereby improving the fixing effect of the contact part 22.

[0060] Optionally, the bonding portion 31 , the sealing portion 32 , the connecting portion 33 and the reinforcing portion 34 are integrally formed.

[0061] The contact portion 22 includes a plurality of contacts 221 that are not in contact with each other. When the actuator is mounted on the front end of the motor shaft assembly 100 , the plurality of contacts 221 of the contact portion 22 are in electrical contact with the actuator to achieve electrical conduction and signal transmission.

[0062] like Figure 5 As shown in A1 and B1 in FIG. 1 , the contact 221 is in a ring structure, and a plurality of contacts 221 are distributed at intervals along the axial direction of the motor shaft 1; or Figure 5 As shown in C1 and D1 in FIG. 1 , the contact 221 extends along the axial direction of the motor shaft 1, and the plurality of contacts 221 are arranged at equal intervals around the central axis of the motor shaft 1; or Figure 5 As shown in E1 in FIG. 1 , the contact 221 extends along the axial direction of the motor shaft 1, and the plurality of contacts 221 are located on the same platform and are arranged at equal intervals along a first direction, and the first direction is perpendicular to the axial direction of the motor shaft 1; or Figure 5 As shown in F1, G1, H1, I1, J1 and K1, multiple contacts 221 are distributed at the end and / or periphery of the motor shaft 1, and the contacts 221 are in the shape of a strip, a circle, a square, a ring, or a fan.

[0063] Optionally, the outer peripheral wall of the motor shaft 1 is provided with an annular groove 15, the annular groove 15 is located between the first opening 11 and the second opening 12, and the annular groove 15 is used to limit the axial movement of the sealing ring. The sealing ring is tightly sleeved in the annular groove 15 to prevent water leakage.

[0064] Optionally, a slot 18 is provided on the outer peripheral wall of the motor shaft 1 , and the inner bracket is engaged with the slot 18 to prevent the inner bracket from sliding axially on the periphery of the motor shaft 1 .

[0065] In this embodiment, the motor shaft 1 includes a first section 16 and a second section 17, the second section 17 is inserted in the motor body 200 along the axial direction, the first section 16 is connected to the second section 17 and the first section 16 is located outside the motor body 200, the mounting channel 13 is opened in the first section 16, and the second opening 12 is opened in the first section 16. The second opening 12 is opened in the radial side wall of the mounting channel 13.

[0066] In this embodiment, the first section 16 and the second section 17 are integrally arranged. First, a solid steel shaft is obtained, and the installation channel 13 is processed at one end of the solid steel shaft, and two openings are processed on the side wall of the installation channel 13, and the two openings are respectively the first opening 11 and the second opening 12. The section of the solid steel shaft without the installation channel 13 is the second section 17, and the section of the solid steel shaft with the installation channel 13 is the first section 16.

[0067] Embodiment 2

[0068] like Figures 6 to 8 As shown, the difference between this embodiment and the first embodiment is that the first section 16 and the second section 17 of this embodiment are detachably fixedly connected. Two solid steel shafts are obtained, one of which is processed to obtain the installation channel 13 and used as the first section 16, and the other solid steel shaft is used as the second section 17, and one of the first section 16 and the second section 17 is provided with an internal thread, and the other is provided with an external thread, and the two are threadedly connected, so that the overall length of the motor shaft 1 can be adjusted. In some other embodiments, the first section 16 and the second section 17 are connected by interference fit, or the first section 16 and the second section 17 are fixed by glue, or the first section 16 and the second section 17 are fixed by snap fasteners.

[0069] Embodiment 3

[0070] like Figures 9 to 11 As shown, the difference between this embodiment and the first embodiment is that the motor shaft 1 of this embodiment passes through the motor body 200, the installation channel 13 passes through the motor shaft 1 in the axial direction, and the second opening 12 is located at the axial end of the motor shaft 1. The motor shaft 1 is made of seamless steel pipe, and the first opening 11 is opened on the radial side wall of the installation channel 13.

[0071] Embodiment 4

[0072] This embodiment also provides a cleaning device, which includes a motor body 200 and a motor shaft assembly 100 as in any one of the first, second and third embodiments, wherein the motor shaft assembly 100 is mounted on the motor body 200. The principle of high frequency vibration of the motor shaft 1 can refer to the prior art, and will not be described in detail in this embodiment.

[0073] The cleaning device of this embodiment can be selected as an electric toothbrush, a brush for washing pots and pans, or a cleaning brush for washing toilets.

[0074] Optionally, the first opening 11 is located at an end of the motor shaft 1 away from the motor body 200 .

[0075] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A motor shaft assembly, characterized in that: The invention comprises a motor shaft (1) and an electrode sheet connection assembly (2); a mounting channel (13) is provided inside the motor shaft (1); two ends of the mounting channel (13) are respectively provided with a first opening (11) and a second opening (12); the electrode sheet connection assembly (2) is inserted into the mounting channel (13); one end of the electrode sheet connection assembly (2) extends out from the first opening (11); and the other end of the electrode sheet connection assembly (2) extends out from the second opening (12).

2. The motor shaft assembly according to claim 1, characterized in that: The installation channel (13) is provided with a fixing member (3), and the fixing member (3) fixes the electrode sheet connection assembly (2) to the installation channel (13).

3. The motor shaft assembly according to claim 2, characterized in that: The fixing member (3) seals the installation channel (13).

4. The motor shaft assembly according to claim 2, characterized in that: The fixing member (3) is waterproof glue.

5. The motor shaft assembly according to claim 1, characterized in that: The motor shaft (1) is made of hard material.

6. The motor shaft assembly according to claim 1, characterized in that: The electrode sheet connection assembly (2) comprises a wire portion (21), wherein the wire portion (21) is inserted into the mounting channel (13), and the mounting channel (13) is provided with a sealing portion (32), wherein the sealing portion (32) seals the mounting channel (13) and adhesively fixes the wire portion (21) to the mounting channel (13).

7. The motor shaft assembly according to claim 6, characterized in that: A recessed groove (19) is provided at one end of the motor shaft (1), and the electrode sheet connection assembly (2) further comprises a contact portion (22), wherein the contact portion (22) is electrically connected to the wire portion (21), and the contact portion (22) is accommodated in the recessed groove (19), and the contact portion (22) is used to electrically contact the actuator.

8. The motor shaft assembly according to claim 7, characterized in that: An adhesive portion (31) is provided between the contact portion (22) and the bottom of the sink groove (19), and the adhesive portion (31) adhesively fixes the contact portion (22) to the sink groove (19).

9. The motor shaft assembly according to claim 1, characterized in that: The outer peripheral wall of the motor shaft (1) is provided with an annular groove (15), the annular groove (15) is located between the first opening (11) and the second opening (12), and the annular groove (15) is used to limit the movement of the sealing ring in the axial direction.

10. The motor shaft assembly according to claim 1, characterized in that The motor shaft (1) passes through the motor body (200), the mounting channel (13) passes through the motor shaft (1) along the axial direction, and the second opening (12) is located at the end of the motor shaft (1) along the axial direction.

11. The motor shaft assembly according to claim 1, characterized in that: The motor shaft (1) comprises a first section (16) and a second section (17), the second section (17) being axially inserted into the motor body (200), the first section (16) being connected to the second section (17) and the first section (16) being located outside the motor body (200), the mounting channel (13) being opened in the first section (16), and the second opening (12) being opened in the first section (16).

12. The motor shaft assembly according to claim 11, characterized in that The first section (16) and the second section (17) are integrally arranged, or the first section (16) and the second section (17) are detachably fixedly connected.

13. A cleaning device, characterized in that It comprises a motor body (200) and a motor shaft assembly (100) as described in any one of claims 1 to 12, wherein the motor shaft assembly (100) is mounted on the motor body (200).

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