Motor shaft assembly and cleaning device

Abstract

The utility model 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, an installation channel is arranged in the motor shaft, two ends of the installation channel are respectively provided with a first opening and a second opening, and the electrode slice connecting assembly is arranged in the installation channel in a penetrating mode. 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] This utility model relates to the field of cleaning technology, and in particular to motor shaft assemblies and cleaning devices. Background Technology

[0002] Cleaning products such as electric toothbrushes and brushes for washing pots and pans use miniature motors to drive actuators that clean the target area. For example, an electric toothbrush uses a miniature motor to drive the brush head to vibrate at high frequency, automatically and frequently brushing the teeth. To achieve functions such as detection or illumination, sensors or LED lights are usually placed in the brush head. These electrical components, such as sensors and LED lights, require FPCs for data transmission and power supply. However, FPCs are inconvenient to install in electric toothbrushes, offer poor protection, and shorten the lifespan of the electric toothbrush when the FPC is damaged. Utility Model Content

[0003] The purpose of this invention is to provide a motor shaft assembly and a cleaning device, in which the electrode plate connecting assembly is installed inside the motor shaft, and the motor shaft protects the electrode plate connecting assembly to prevent damage to the electrode plate connecting assembly and ensure the service life of the cleaning device.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] In a first aspect, a motor shaft assembly is provided, including a motor shaft and an electrode plate connecting assembly. The motor shaft has an internal mounting channel, and the two ends of the mounting channel have a first opening and a second opening, respectively. The electrode plate connecting assembly passes through the mounting channel, with one end of the electrode plate connecting assembly extending from the first opening and the other end of the electrode plate connecting assembly extending from the second opening.

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

[0007] As an optional technical solution, the fastener seals the mounting channel.

[0008] As an optional technical solution, the fastener is made of waterproof adhesive.

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

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

[0011] As an optional technical solution, one end of the motor shaft is provided with a groove, and the electrode plate connection assembly includes a contact portion, which is accommodated in the groove and is used for electrical contact with the actuating component.

[0012] As an optional technical solution, an adhesive part is provided between the contact part and the bottom of the settling tank, and the adhesive part bonds and fixes the contact part to the settling tank.

[0013] As an optional technical solution, the outer peripheral wall of the motor shaft is provided with an annular groove, which is located between the first opening and the second opening, and the annular groove is used to restrict 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 axially, and the second opening is located at the axial end of the motor shaft.

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

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

[0017] Secondly, a cleaning device is provided, including a motor body and a motor shaft assembly as described above, the motor shaft assembly being mounted on the motor body.

[0018] The beneficial effects of this utility model are:

[0019] The present invention provides a motor shaft assembly and a cleaning device. The motor shaft assembly includes a motor shaft and an electrode plate connecting assembly. The motor shaft has an internal mounting channel with a first opening and a second opening at both ends. The electrode plate connecting assembly passes through the mounting channel, with one end of the electrode plate connecting assembly extending from the first opening and the other end extending from the second opening. The mounting channel has a fixing member inside, which fixes the electrode plate connecting assembly inside the mounting channel.

[0020] The electrode plate connection assembly is installed in the installation channel. The motor shaft isolates and protects the electrode plate connection assembly to prevent it from colliding with other components, thus avoiding damage to the electrode plate connection assembly and extending the service life of the cleaning device. Attached Figure Description

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

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

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

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

[0025] Figure 5 This is an axial arrangement diagram of the contacts and motor shaft as described in Embodiment 1;

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

[0027] Figure 7 This is an exploded view of the motor shaft assembly described in Embodiment 2;

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

[0029] Figure 9 This is a schematic diagram of the motor shaft assembly described in Embodiment 3;

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

[0031] Figure 11 This is a cross-sectional view of the motor shaft assembly described in Embodiment 3.

[0032] In the picture:

[0033] 100. Motor shaft assembly; 200. Motor body;

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

[0035] 2. Electrode plate connecting assembly; 21. Lead wire section; 22. Contact section; 221. Contact;

[0036] 3. Fasteners; 31. Adhesive parts; 32. Sealing parts; 33. Connecting parts; 34. Reinforcing parts. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0041] Example 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 plate connecting assembly 2. The motor shaft 1 has an installation channel 13 inside. The two ends of the installation channel 13 are respectively provided with a first opening 11 and a second opening 12. The electrode plate connecting assembly 2 passes through the installation channel 13. One end of the electrode plate connecting assembly 2 extends out from the first opening 11, and the other end of the electrode plate connecting assembly 2 extends out from the second opening 12.

[0043] Specifically, the electrode plate connecting assembly 2 is installed in the installation channel 13, and the motor shaft 1 isolates and protects the electrode plate connecting assembly 2 to prevent it from colliding with other components, avoid damage to the electrode plate connecting assembly 2, and extend the service life of the cleaning device.

[0044] The electrode plate connection assembly 2 is a flexible circuit board with electrical conductivity and data transmission functions. The motor shaft 1 and the electrode plate connection assembly 2 are assembled together. The motor shaft 1 transmits power to the actuator, and the electrode plate connection assembly 2 supplies power to the actuator and transmits the detection signals acquired by the actuator.

[0045] Optionally, the mounting channel 13 is provided with a fixing member 3, which fixes the electrode sheet connecting assembly 2 inside the mounting channel 13.

[0046] When the cleaning device is working, the motor shaft 1 vibrates at high frequency along its own axis, and the fixing part 3 fixes the electrode plate connecting assembly 2 to the motor shaft 1, which can prevent the electrode plate connecting assembly 2 from detaching from the motor shaft 1.

[0047] Optionally, the fastener 3 is located on the side of the mounting channel 13 near the actuator to prevent cleaning fluid from entering the first opening 11 and to avoid water accumulation in the first opening 11, which could lead to mold growth.

[0048] Optionally, the electrode connecting assembly 2 and the mounting channel 13 are interference-fitted to ensure the installation stability of the electrode connecting assembly 2. Before the electrode connecting assembly 2 is fixed by the fastener 3, the electrode connecting assembly 2 is installed into the mounting channel 13 by means of interference fit to ensure the installation stability of the electrode connecting assembly 2.

[0049] Optionally, the fastener 3 seals the mounting channel 13 to prevent cleaning fluid from flowing into the mounting channel 13 from the first opening 11 and out from the second opening 12, thus preventing corrosion of other electronic components of the cleaning device or causing short circuits in other electronic components.

[0050] In this embodiment, the fixing component 3 is a waterproof adhesive. The liquid waterproof adhesive is injected into the installation channel 13 and cured to form the fixing component 3. It has low cost, good sealing effect, and can fix the electrode sheet connecting assembly 2 to the installation channel 13.

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

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

[0053] Optionally, the electrode plate connecting assembly 2 further includes a wire portion 21, which passes through the mounting channel 13. The mounting channel 13 is provided with a sealing portion 32, which seals the mounting channel 13 and adhesively fixes the wire portion 21 to the mounting channel 13. After the wire portion 21 is inserted into the mounting channel 13, liquid waterproof adhesive is injected into the mounting channel 13. After the liquid waterproof adhesive cures, it forms the sealing portion 32, which seals the mounting channel 13 to prevent water leakage and fixes the wire portion 21 to prevent it from moving.

[0054] Optionally, one end of the motor shaft 1 is provided with a recess 19, and the electrode plate connecting assembly 2 also includes a contact portion 22, which is accommodated in the recess 19 and is used for electrical contact with the actuating component. When the cleaning device is working, the motor shaft 1 vibrates at high frequency along its own axial direction, arranging the contact portion 22 in the recess 19. External forces in the axial direction cannot act directly on the contact portion 22 from one side, preventing the electrode plate connecting assembly 2 from being lifted or broken.

[0055] Optionally, the motor shaft 1 has a support platform 14 at one end with the first opening 11, and the extended plane of the support platform 14 is parallel to the central axis of the mounting channel 13. The actuating component abuts against the support platform 14, the recess 19 is opened on the support platform 14, and the highest point of the contact portion 22 is not higher than the top surface of the support platform 14.

[0056] Optionally, an adhesive portion 31 is provided between the contact portion 22 and the bottom of the settling tank 19, which adhesively fixes the contact portion 22 to the settling tank 19. When the contact portion 22 is placed into the settling tank 19, a gap is formed between the contact portion 22 and the bottom of the settling tank 19. Then, liquid waterproof adhesive is injected into the gap between the contact portion 22 and the bottom of the settling tank 19. After the liquid waterproof adhesive cures, it forms the adhesive portion 31, which adhesively fixes the contact portion 22 to the settling tank 19, preventing the high-frequency vibrating motor shaft 1 from ejecting the contact portion 22.

[0057] Optionally, the support platform 14 is also provided with a connecting groove 110, which connects the sink 19 and the installation channel 13. One end of the wire part 21 extends out of the first opening 11, passes through the connecting groove 110, and connects with the contact part 22. Liquid waterproof adhesive is cured in the connecting groove 110 to form a connecting part 33. The connecting part 33 can enhance the connection stability between the wire part 21 and the contact part 22.

[0058] Optionally, the side of the sink 19 away from the connecting groove 110 is a protective wall 111, which prevents axial external forces from being directly applied to the contact part 22.

[0059] Optionally, the protective wall 111 is provided with a notch 112. The notch 112, the connecting groove 110, and the mounting channel 13 are aligned. When machining the motor shaft 1, the middle part of the motor shaft 1 is directly machined along the axial direction to obtain the notch 112, the connecting groove 110, and the mounting channel 13. The machining process is simple and the machining cost is low. When injecting glue into the motor shaft 1, the liquid waterproof glue seeps into the notch 112 and forms a reinforcing part 34, which improves the fixing effect of the contact part 22.

[0060] Optionally, the adhesive part 31, the sealing part 32, the connecting part 33, and the reinforcing part 34 are integrally molded.

[0061] The contact section 22 includes a plurality of non-contacting contacts 221. When the actuator is mounted on the front end of the motor shaft assembly 100, the plurality of contacts 221 of the contact section 22 make electrical contact with the actuator to achieve electrical conduction and signal transmission.

[0062] like Figure 5 As shown in A1 and B1, the contacts 221 have a ring-shaped structure, and multiple contacts 221 are distributed at intervals along the axial direction of the motor shaft 1; or, as shown in Figure 1. Figure 5 As shown in C1 and D1, the contact 221 extends along the axial direction of the motor shaft 1, and multiple contacts 221 are arranged at equal intervals around the central axis of the motor shaft 1; or, as shown in... Figure 5 As shown in E1, contact 221 extends along the axial direction of motor shaft 1, and multiple contacts 221 are located on the same platform and are equally spaced along a first direction, which is perpendicular to the axial direction of motor shaft 1; or, as shown in E1. 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. The contacts 221 are strip-shaped, circular, square, annular or fan-shaped.

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

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

[0065] In this embodiment, the motor shaft 1 includes a first segment 16 and a second segment 17. The second segment 17 is axially inserted into the motor body 200. The first segment 16 is connected to the second segment 17 and is located outside the motor body 200. An installation channel 13 is formed in the first segment 16, and a second opening 12 is formed in the first segment 16. The second opening 12 is formed on the radial sidewall of the installation channel 13.

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

[0067] Example 2

[0068] like Figures 6 to 8 As shown, the difference between this embodiment and Embodiment 1 is that the first segment 16 and the second segment 17 in this embodiment are detachably and fixedly connected. Two solid steel shafts are obtained; one solid steel shaft is machined to form the mounting channel 13 and used as the first segment 16, and the other solid steel shaft is used as the second segment 17. One of the first segment 16 and the second segment 17 has an internal thread, and the other has an external thread; the two are threaded together, allowing adjustment of the overall length of the motor shaft 1. In other embodiments, the first segment 16 and the second segment 17 are connected by an interference fit, or by adhesive bonding, or by a snap-fit ​​connection.

[0069] Example 3

[0070] like Figures 9 to 11 As shown, the difference between this embodiment and Embodiment 1 is that in this embodiment, the motor shaft 1 passes through the motor body 200, the mounting channel 13 passes through the motor shaft 1 axially, 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 sidewall of the mounting channel 13.

[0071] Example 4

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

[0073] The cleaning device in this embodiment can be 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 the end of the motor shaft 1 away from the motor body 200.

[0075] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A motor shaft assembly, characterized in that, The device includes a motor shaft (1) and an electrode plate connecting assembly (2). The motor shaft (1) has an internal mounting channel (13). The mounting channel (13) has a first opening (11) and a second opening (12) at both ends. The electrode plate connecting assembly (2) passes through the mounting channel (13). One end of the electrode plate connecting assembly (2) extends from the first opening (11), and the other end of the electrode plate connecting assembly (2) extends from the second opening (12).

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

3. The motor shaft assembly according to claim 2, characterized in that, The fastener (3) seals the mounting channel (13).

4. The motor shaft assembly according to claim 2, characterized in that, The fastener (3) is made of waterproof adhesive.

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

6. The motor shaft assembly according to claim 1, characterized in that, The electrode plate connection assembly (2) includes a wire portion (21) which passes through the mounting channel (13). The mounting channel (13) is provided with a sealing portion (32), which 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, One end of the motor shaft (1) is provided with a recess (19), and the electrode plate connection assembly (2) further includes a contact part (22). The contact part (22) is electrically connected to the wire part (21). The contact part (22) is accommodated in the recess (19) and is used to make electrical contact with the actuating component.

8. The motor shaft assembly according to claim 7, characterized in that, An adhesive part (31) is provided between the contact part (22) and the bottom of the sink (19), and the adhesive part (31) adhesively and fixes the contact part (22) to the sink (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), which is located between the first opening (11) and the second opening (12). The annular groove (15) is used to restrict the movement of the sealing ring along 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) axially, and the second opening (12) is located at the end of the motor shaft (1) axially.

11. The motor shaft assembly according to claim 1, characterized in that, The motor shaft (1) includes a first section (16) and a second section (17). The second section (17) is inserted into 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).

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

13. A cleaning device, characterized in that, It includes a motor body (200) and a motor shaft assembly (100) as claimed in any one of claims 1-12, the motor shaft assembly (100) being mounted on the motor body (200).

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