Humidifier motor sealing structure

Abstract

The utility model relates to a humidifier motor sealing structure comprising a motor support provided with an axially penetrating mounting through hole; the first sealing piece is made of an elastic material and embedded in the mounting through hole, and the first sealing piece is provided with a shaft hole coaxial with the mounting through hole; the motor is arranged in the motor bracket, and a motor shaft of the motor penetrates through the shaft hole and is in transmission connection with the air drum; the first sealing convex rib is arranged at the end, close to one end of the motor, of the shaft hole and abuts against the end face, close to the motor shaft, of the motor; and the second sealing convex rib is arranged at the end part of one end, far away from the motor, of the shaft hole and is propped against the peripheral surface of the motor shaft. The motor aims to solve the technical problem that the sealing performance of a motor in the prior art is reduced due to axial movement of a sealing ring.

Description

Technical Field

[0001] This application relates to the field of humidifier technology, and more particularly to a humidifier motor sealing structure. Background Technology

[0002] The motor of a humidifier drives a blower to rotate and deliver humidified air during operation, and the connection between the motor shaft and the blower is constantly exposed to a high-humidity environment. In existing technology, a sealing ring is typically placed around the outer circumference of the motor shaft to prevent water leakage. However, this structure has the following technical problems:

[0003] When the motor shaft is under high-speed rotation and continuous vibration, the seal is prone to axial displacement, which can cause gaps at the sealing interface and affect the sealing effect. Utility Model Content

[0004] This application provides a sealing structure for a humidifier motor to solve the technical problem of decreased sealing performance caused by axial movement of the sealing ring in existing motors.

[0005] This application provides a humidifier motor sealing structure, including a motor bracket with an axially penetrating mounting hole;

[0006] A first sealing element is embedded in the mounting through hole, and the first sealing element has a shaft hole coaxial with the mounting through hole;

[0007] The motor is housed within the motor bracket, and its motor shaft passes through the shaft hole and is connected to the blower drive.

[0008] The first sealing rib is located at the end of the shaft hole near the motor end and abuts against the end face of the motor near the motor shaft.

[0009] The second sealing rib is located at the end of the shaft hole away from the motor and abuts against the outer circumferential surface of the motor shaft.

[0010] In one possible implementation, the first seal extends from one end of the first sealing rib toward the second sealing rib to form an elastic arm.

[0011] In one possible implementation, the inner wall of the mounting through hole is provided with a radially protruding boss, and the outer peripheral surface of the first seal is provided with a groove adapted to the boss. The boss is embedded in the groove to limit the axial displacement of the first seal, and the groove is located on the opposite side of the elastic arm.

[0012] In one possible implementation, an axial gap is formed between the elastic arm and the slot.

[0013] In one possible implementation, the device further includes a fastener for securing the motor, the fastener having at least one connecting portion that is detachably connected to the motor bracket via a fastener.

[0014] In one possible implementation, a water filling cap is also included, which is detachably connected to the motor bracket and has a water filling hole communicating with the water inlet of the motor bracket, the water inlet communicating with the humidifier water tank.

[0015] In one possible implementation, a filter screen is placed over the water inlet of the water inlet cap.

[0016] In one possible implementation, a second seal is provided between the water filling cap and the motor bracket.

[0017] In one possible implementation, the top of the motor bracket is provided with an annular groove, and the second seal is embedded in the annular groove;

[0018] The lower end of the water filling cap extends to form an annular extension, which is inserted into the annular groove and abuts against the second sealing element.

[0019] The technical solutions provided in this application have the following advantages compared with the prior art:

[0020] The humidifier motor sealing structure provided in this application embodiment forms multi-point support and sealing by respectively setting a first sealing rib and a second sealing rib at both ends of the shaft hole of the first sealing member. The first sealing rib abuts against the end face of the motor, and the second sealing rib abuts against the outer peripheral surface of the motor shaft. This structure can effectively restrict the axial movement of the first sealing member and avoid sealing gaps caused by the displacement of the sealing member, thereby ensuring a good sealing effect. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0024] Figure 1 This is a cross-sectional structural diagram of a humidifier motor sealing structure provided in an embodiment of this application.

[0025] Figure 2 for Figure 1 An enlarged diagram of A in the diagram.

[0026] Figure 3 This is a three-dimensional view of the first seal.

[0027] Figure 4 This is a schematic diagram of the motor assembly.

[0028] Figure 5 for Figure 1 Enlarged diagram of B in the diagram.

[0029] Figure 6 This is a 3D diagram of the water-filling cap.

[0030] Figure 7 This is a perspective view of a humidifier motor sealing structure provided in an embodiment of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Motor bracket; 101. Mounting through hole; 102. Boss; 103. Annular groove;

[0033] 2. First sealing element; 201. First sealing rib; 202. Second sealing rib; 203. Shaft hole; 204. Elastic arm; 205. Slot; 206. Axial spacing;

[0034] 3. Motor; 301. Motor shaft;

[0035] 4. Wind drum;

[0036] 5. Fasteners; 501. Connecting parts;

[0037] 6. Water inlet cap; 601. Water inlet hole; 602. Filter screen; 603. Extension section;

[0038] 7. Second sealing element. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0041] For ease of description, spatial relative terms may be used in this text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the humidifier motor seal structure during use or operation, other than those depicted in the figure. For example, if the humidifier motor seal structure in the figure undergoes a positional flip, orientation change, or movement change, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The humidifier motor seal structure may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in this text will be interpreted accordingly.

[0042] To address the technical problem of decreased sealing performance caused by axial movement of the sealing ring in existing motors, this application provides a sealing structure for a humidifier motor.

[0043] Figures 1 to 7 A humidifier motor sealing structure provided in this application embodiment includes a motor bracket 1 with an axially penetrating mounting through hole 101;

[0044] The first sealing element 2 is embedded in the mounting through hole 101, and the first sealing element 2 is provided with a shaft hole 203 coaxial with the mounting through hole 101;

[0045] Motor 3 is located inside motor bracket 1, and its motor shaft 301 passes through shaft hole 203 and is connected to the blower 4 for transmission.

[0046] The first sealing rib 201 is located at the end of the shaft hole 203 near the motor 3 and abuts against the end face of the motor 3 near the motor shaft 301.

[0047] The second sealing rib 202 is located at the end of the shaft hole 203 away from the motor 3 and abuts against the outer peripheral surface of the motor shaft 301.

[0048] In the above technical solution, the motor bracket 1 serves as a support and mounting base, and is provided with an axially penetrating mounting through hole 101. The first sealing member 2 is made of elastic material and is embedded in the mounting through hole 101, and the first sealing member 2 is provided with a shaft hole 203 coaxial with the mounting through hole 101. The motor 3 is installed in the motor bracket 1, and its motor shaft 301 passes through the shaft hole 203 of the first sealing member 2 and is connected to the blower 4 for transmission, thereby realizing the basic functional layout of the motor 3 driving the blower 4 to rotate to deliver humidified air.

[0049] The first sealing rib 201 is located at the end of the shaft hole 203 near the motor 3. After the motor 3 is installed in the motor bracket 1, the first sealing rib 201 abuts tightly against the end face of the motor 3 near the motor shaft 301. Because the first seal 2 is elastic, the first sealing rib 201 can maintain tight contact with the end face of the motor 3 at all times when the motor shaft 301 rotates at high speed and vibrates continuously, preventing moisture from entering the motor from the gap between the end face of the motor 3 and the first seal 2.

[0050] The second sealing rib 202 is located at the end of the shaft hole 203 furthest from the motor, and it abuts against the outer circumferential surface of the motor shaft 301. During the operation of the motor shaft 301, regardless of how high the motor shaft 301 rotates and vibrates, the second sealing rib 202, relying on the elastic characteristics of the first sealing element 2, can adaptively fit against the outer circumferential surface of the motor shaft 301, sealing the mating gap between the motor shaft 301 and the first sealing element 2, and preventing moisture from seeping in from there.

[0051] In existing technologies, seals are prone to axial displacement during high-speed rotation and continuous vibration of the motor shaft, leading to gaps at the sealing interface. However, the sealing structure in this application, by providing a first sealing rib 201 and a second sealing rib 202 at both ends of the shaft hole 203 of the first seal 2, forms multi-point support and sealing. The first sealing rib 201 abuts against the end face of the motor 3, and the second sealing rib 202 abuts against the outer circumferential surface of the motor shaft 301. This structure effectively restricts the axial movement of the first seal 2, avoiding sealing gaps caused by displacement of the first seal 2, thereby ensuring a good sealing effect.

[0052] Please refer to Figure 2 and Figure 3In one possible implementation, the first seal 2 extends in a tapering manner from one end of the first sealing rib 201 toward the second sealing rib 202 to form an elastic arm 204. In the first seal 2, the structure extends in a tapering manner from one end of the first sealing rib 201 toward the second sealing rib 202 to form the elastic arm 204. This tapering structural design gives the elastic arm 204 a certain elastic deformation capability. When the motor shaft 301 experiences slight vibration or displacement during operation, or when relative movement occurs between the motor shaft 301 and the first seal 2 due to temperature changes, the elastic arm 204 can adapt to these changes through its own elastic deformation. For example, the motor shaft 301 may experience slight shaking due to load changes; in this case, the elastic arm 204 can bend or compress accordingly, always maintaining a tight fit with the motor shaft 301 and the end face of the motor 3.

[0053] Understandably, the elastic deformation characteristics of the elastic arm 204 enable it to better fill the tiny gaps that may appear between the motor shaft 301 and the first seal 2, preventing moisture from seeping into the motor 3 from these gaps, further improving the reliability of the sealing structure and providing more effective protection for the motor 3.

[0054] While ensuring a seal, the elastic arm 204's elastic deformation characteristics can also buffer the friction between the motor shaft 301 and the first seal 2 to a certain extent, reducing the resistance when the motor 3 is running, which helps to improve the operating efficiency of the motor 3 and reduce energy consumption.

[0055] Meanwhile, the inner wall of the mounting through hole 101 is provided with a radially protruding boss 102, and the outer peripheral surface of the first seal 2 is provided with a groove 205 that matches the boss 102. The boss 102 is embedded in the groove 205 to limit the axial displacement of the first seal 2, and the groove 205 is located on the opposite side of the elastic arm 204. A radially protruding boss 102 is provided on the inner wall of the mounting through hole 101, and a groove 205 that matches it is provided on the outer peripheral surface of the first seal 2. When the first seal 2 is installed into the mounting through hole 101 of the motor bracket 1, the boss 102 will be embedded in the groove 205. Due to the mating relationship between the boss 102 and the slot 205, when the first seal 2 is subjected to axial force (such as the axial force that may be generated when the motor is running, or the axial stress that may occur during installation), the boss 102 will be stuck in the slot 205, preventing the first seal 2 from moving axially within the mounting through hole 101, thereby achieving axial positioning and limiting of the first seal 2.

[0056] The slot 205 is located on the opposite side of the elastic arm 204, which means that the mating structure between the boss 102 and the slot 205 will not interfere with the normal operation of the elastic arm 204. The elastic arm 204 can still elastically deform according to its design requirements to adapt to the dynamic changes of the motor shaft 301 and ensure sealing performance.

[0057] It should be noted that an axial gap 206 is formed between the elastic arm 204 and the slot 205. This axial gap 206 provides the elastic arm 204 with room to move. When the motor shaft 301 experiences slight axial displacement or vibration during operation, the elastic arm 204 can shift within this axial gap 206. For example, the motor 3 may generate a large axial thrust at startup; the elastic arm 204 can utilize this axial gap 206 to compress and deform towards the slot 205, absorbing this excess axial force. After the motor 3 runs smoothly, the elastic arm 204 gradually returns to its original shape, maintaining a tight fit with the motor shaft 301 and the first seal 2 to maintain a good sealing effect.

[0058] Meanwhile, the axial spacing 206 also serves as a buffer and shock absorber. When the motor 3 is running, it may be affected by external factors, resulting in axial impact forces. The presence of the axial spacing 206 provides sufficient space for the elastic arm 204 to buffer these impact forces, reducing the damage to the first seal 2 and the entire sealing structure, and protecting the integrity of the sealing structure.

[0059] Please refer to Figure 4 In one possible implementation, this application further includes a fixing member 5 for securing the motor 3. The fixing member 5 has at least one connecting portion 501, which is detachably connected to the motor bracket 1 by a fastener (not shown in the drawings). The main function of the fixing member 5 is to secure the motor 3. It is typically designed according to the shape and size of the motor to provide stable support. For example, the fixing member 5 may be a component with a groove of a specific shape, into which the motor 3 can be embedded. The shape of the groove matches the motor housing, thereby restricting the movement of the motor in all directions.

[0060] The fastener 5 is provided with at least one connecting part 501. These connecting parts 501 can be structures such as ear plates or bosses protruding from the surface of the fastener 5, and have mounting holes. The motor bracket 1 is also provided with mounting holes that match the position and number of the connecting parts. Fasteners (such as bolts, screws, etc.) pass through the connecting parts 501 of the fastener 5 and the mounting holes on the motor bracket 1, and are then tightened with nuts, thereby realizing the detachable connection between the fastener 5 and the motor bracket 1.

[0061] Additionally, it includes a water inlet cap 6, which is detachably connected to the motor bracket 1 and has a water inlet 601 communicating with the water inlet (not shown in the attached diagram) of the motor bracket 1. The water inlet is also connected to the humidifier water tank (not shown in the attached diagram). The water inlet cap 6 and the motor bracket 1 are typically connected using a specific detachable method, such as snap-fit ​​connections or threaded connections. Taking a snap-fit ​​connection as an example, the motor bracket 1 has corresponding slots or protrusions, and the edge of the water inlet cap 6 has matching snaps. When the water inlet cap 6 is installed on the motor bracket 1, the snaps engage with the slots, connecting the two. Disassembly is achieved by applying a certain amount of external force to disengage the snaps from the slots. Threaded connections involve corresponding threads on the water inlet cap 6 and the motor bracket 1, allowing the water inlet cap 6 to be tightened or loosened by rotating it.

[0062] At the connection point, a sealing structure is usually designed to prevent water leakage from the water tank. For example, a sealing gasket is set on the contact surface between the water filler cap 6 and the motor bracket 1. When the two are tightly connected, the sealing gasket is compressed, filling the tiny gap between the contact surfaces, thereby achieving a sealing effect.

[0063] The water inlet 601 on the water inlet cap 6 is an opening that is directly connected to the water inlet on the motor bracket 1. The water inlet is in turn connected to the humidifier's water tank, thus forming a complete water channel. When the user pours water into the water inlet 601, the water will flow into the water tank through the water inlet 601 and the water inlet, providing a water source for the humidifier.

[0064] In one possible implementation, a filter screen 602 covers the water inlet 601 of the water inlet cap 6. When a user adds water to the humidifier's water tank through the water inlet 601, the water first comes into contact with the filter screen 602 covering the water inlet 601. The filter screen 602 has a specific pore structure, and the size of these pores is carefully designed to block larger impurities in the water, such as sediment, rust, and hair. Under the influence of gravity, the water flows into the water inlet 601 through the pores of the filter screen 602, while the impurities are intercepted by the filter screen 602.

[0065] In one possible implementation, a second seal 7 is provided between the water filler cap 6 and the motor bracket 1. The second seal 7 is typically made of a material with certain elasticity and sealing properties, such as rubber or silicone. When the water filler cap 6 is installed onto the motor bracket 1, the second seal 7 is sandwiched between the contact surfaces of the water filler cap 6 and the motor bracket 1. Because the second seal 7 is elastic, it undergoes elastic deformation after being compressed by the water filler cap 6 and the motor bracket 1, thereby tightly filling the tiny gap between their contact surfaces.

[0066] When the humidifier is operating, the second seal 7 effectively prevents moisture from leaking out from the connection between the water inlet cap 6 and the motor bracket 1. It acts like a barrier to prevent moisture from leaking into the motor 3.

[0067] In one possible implementation, the top of the motor bracket 1 is provided with an annular groove 103, and the second seal 7 is embedded in the annular groove 103; the lower end of the water inlet cap 6 extends to form an annular extension 603, which is inserted into the annular groove 103 and abuts against the second seal 7. When assembling the humidifier motor sealing structure, the second seal 7 is first embedded in the annular groove 103 provided at the top of the motor bracket 1. The annular groove 103 provides a fixed installation position for the second seal 7, enabling it to be stably positioned in a specific location and preventing easy displacement during subsequent assembly or use.

[0068] Next, the water filler cap 6 is installed onto the motor bracket 1. The annular extension 603 formed by the lower end of the water filler cap 6 is inserted into the annular groove 103. After the extension 603 is inserted into the annular groove 103, it will tightly abut against the second sealing member 7 that is already embedded in the annular groove 103. During the abutment process, the second sealing member 7 is squeezed by the extension 603 and the wall of the annular groove 103, and undergoes elastic deformation, thereby filling the tiny gaps between the extension 603, the wall of the annular groove 103, and the contact surface between the water filler cap 6 and the motor bracket 1.

[0069] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0070] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the humidifier motor sealing structure 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 application.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0072] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a 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 application according to the specific circumstances.

[0073] In this application, unless otherwise expressly 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.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0075] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0076] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A sealing structure for a humidifier motor, characterized in that, include: The motor bracket has an axially penetrating mounting hole; The first sealing element, made of elastic material, is embedded in the mounting through hole, and the first sealing element has a shaft hole coaxial with the mounting through hole; The motor is housed within the motor bracket, and its motor shaft passes through the shaft hole and is connected to the blower drive. The first sealing rib is located at the end of the shaft hole near the motor end and abuts against the end face of the motor near the motor shaft. The second sealing rib is located at the end of the shaft hole away from the motor and abuts against the outer circumferential surface of the motor shaft.

2. The humidifier motor sealing structure according to claim 1, characterized in that, The first sealing element extends from one end of the first sealing rib toward the second sealing rib to form an elastic arm.

3. The humidifier motor sealing structure according to claim 2, characterized in that, The inner wall of the mounting through hole is provided with a radially protruding boss, and the outer peripheral surface of the first seal is provided with a groove that matches the boss. The boss is embedded in the groove to limit the axial displacement of the first seal, and the groove is located on the opposite side of the elastic arm.

4. The humidifier motor sealing structure according to claim 3, characterized in that, An axial gap is formed between the elastic arm and the slot.

5. The humidifier motor sealing structure according to claim 1, characterized in that, It also includes a fixing member for fixing the motor, the fixing member having at least one connecting part, the connecting part being detachably connected to the motor bracket by a fastener.

6. The humidifier motor sealing structure according to claim 1, characterized in that, It also includes a water filling cap, which is detachably connected to the motor bracket and has a water filling hole that communicates with the water inlet of the motor bracket, and the water inlet is connected to the humidifier water tank.

7. The humidifier motor sealing structure according to claim 6, characterized in that, A filter screen is placed over the water inlet of the water inlet cap.

8. The humidifier motor sealing structure according to claim 6, characterized in that, A second sealing element is provided between the water filling cap and the motor bracket.

9. The humidifier motor sealing structure according to claim 8, characterized in that, The top of the motor bracket is provided with an annular groove, and the second sealing element is embedded in the annular groove; The lower end of the water filling cap extends to form an annular extension, which is inserted into the annular groove and abuts against the second sealing element.

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