Air conditioner indoor unit fan bearing structure and air conditioner

Abstract

The utility model relates to the technical field of air conditioners, and discloses an air conditioner indoor unit fan bearing structure and an air conditioner. The bearing assembly is mounted in the mounting hole; the guide part is fixed to the outer edge of the end, facing the insertion direction of the fan shaft, of the bearing seat, the guide part is provided with a tapered barrel part extending into the mounting hole, and the tapered barrel part and the bearing assembly are coaxially arranged and used for guiding the fan shaft to be inserted into the bearing assembly. According to the bearing structure, due to the arrangement of the guide piece, the installation problem caused by a deep bearing seat is effectively solved, even under the invisible condition, the fan shaft can be smoothly inserted into the bearing through the guide of the conical barrel part, and the blind installation function is achieved; through guiding of the conical barrel part, the fan shaft can be easily inserted into the bearing assembly, accurate alignment is not needed, and the assembling efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technical field especially relates to a kind of air conditioner indoor unit fan bearing structure and air conditioner. BACKGROUND

[0002] In prior art, the bearing seat of air conditioner fan is usually designed with shallow depth, which makes the insertion operation of fan shaft more convenient, and even blind installation can be realized, i.e. installation is completed by hand feeling in invisible condition. This design simplifies the assembly process and improves production efficiency. However, with the increasing requirement for air conditioner performance, especially the increasing strictness in sealing performance, the traditional shallow-depth bearing seat design gradually shows its limitations. In order to improve the sealing performance of air conditioner, a common improvement way is to increase the length of bearing seat, which effectively prevents the invasion of external impurities such as dust and moisture by lengthening the bearing seat.

[0003] However, the increase of bearing seat length also brings a series of new problems. The most significant problem is that the installation of fan shaft becomes more difficult. Due to the increase of bearing seat depth, fan shaft is more likely to be skewed or stuck during insertion, which leads to reduced installation efficiency and even possible damage to bearing or fan shaft. The traditional blind installation method becomes difficult to implement in this case, and the operator needs to align and operate more carefully, which undoubtedly increases the assembly difficulty and time cost. SUMMARY

[0004] Based on the technical problem of inconvenient installation of fan shaft in deep bearing seat in prior art, the utility model provides an air conditioner indoor unit fan bearing structure, which can easily insert the fan shaft into the bearing assembly through the guide of the conical cylinder part by setting the guide member, without accurate alignment, greatly improving the assembly efficiency. Even in invisible condition, the fan shaft can be smoothly inserted into the bearing through the guide of the conical cylinder part, realizing the function of blind installation.

[0005] The utility model provides an air conditioner indoor unit fan bearing structure, which comprises:

[0006] A bearing seat is provided with a mounting hole for mounting a bearing assembly;

[0007] A bearing assembly is mounted in the mounting hole;

[0008] A guide member is fixed to the outer edge of one end of the bearing seat facing the insertion direction of the fan shaft, and the guide member has a tapered conical cylinder part extending into the interior of the mounting hole. The conical cylinder part is coaxially arranged with the bearing assembly and serves as a guide for the insertion of the fan shaft into the bearing assembly.

[0009] In some embodiments, the guide member is fixedly connected with the bearing seat through a buckle structure.

[0010] In some embodiments, the guide piece has a ring-shaped supporting portion, and a plurality of clamping claws are circumferentially arranged on the ring-shaped supporting portion; the outer circumferential wall of the bearing seat is provided with clamping grooves matched with the clamping claws; and the clamping claws are clamped into the clamping grooves to form the clamping structure.

[0011] In some embodiments, the clamping grooves are annular grooves arranged on the outer circumferential wall of the bearing seat.

[0012] In some embodiments, the axial distance between the small-end end face of the tapered cylindrical portion and the end face of the bearing assembly is 0-5 mm.

[0013] In some embodiments, the minimum inner diameter of the tapered cylindrical portion is equal to the inner hole diameter of the bearing assembly.

[0014] In some embodiments, the bearing assembly comprises a bearing body and a bearing sleeve sleeved outside the bearing body.

[0015] In some embodiments, the small-end end of the tapered cylindrical portion is provided with a ring-shaped boss portion.

[0016] In some embodiments, the length of the bearing seat ranges from 30 mm to 40 mm.

[0017] The utility model also includes an air conditioner, which comprises the air conditioner indoor unit fan bearing structure.

[0018] Compared with the prior art, the utility model has the advantages and positive effects that:

[0019] The air conditioner indoor unit fan bearing structure described above effectively solves the installation problem caused by the deep bearing seat by arranging the guide piece, so that the fan shaft can be smoothly inserted into the bearing through the guidance of the tapered cylindrical portion even in invisible conditions, and the function of blind assembly is realized; through the guidance of the tapered cylindrical portion, the fan shaft can be easily inserted into the bearing assembly without accurate alignment, and the assembly efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0021] Figure 1 It is an installation structure schematic view of the air conditioner indoor unit fan bearing structure of the utility model;

[0022] Figure 2 It is a perspective view of the air conditioner indoor unit fan bearing structure of the utility model;

[0023] Figure 3 is an exploded view of the air conditioner indoor unit fan bearing structure; Figure 2

[0024] Figure 4 is a sectional view of the air conditioner indoor unit fan bearing structure of the utility model;

[0025] Figure 5 is a structural schematic view of the guide piece in the air conditioner indoor unit fan bearing structure of the utility model;

[0026] Explanation of reference signs:

[0027] 1 - cabinet;

[0028] 100 - bearing seat; 110 - mounting hole; 120 - clamping groove;

[0029] 200 - bearing assembly;

[0030] 300 - guide piece; 310 - annular support part; 320 - conical cylinder part; 330 - clamping jaw; 340 - annular boss part. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0033] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0034] ​The terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an indicated number of technical features. Thus, features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0035] Referring to Figures 1-5 The core of the air conditioner indoor unit fan bearing structure is the design of the guide piece, aiming to solve the installation inconvenience problem caused by the deep bearing seat.

[0036] The air conditioner indoor unit fan bearing structure comprises a bearing seat 100, a bearing assembly 200 and a guide piece 300.

[0037] The bearing seat 100 is the basis of the structure, and an installation hole 110 for installing the bearing assembly 200 is formed in the inside. The size and shape of the installation hole 110 are matched with the used bearing assembly 200, to ensure that the bearing assembly 200 can be stably installed in the bearing seat 100. The bearing seat 100 is connected with other parts (such as a fan bracket or a casing 1) of the air conditioner indoor unit through its own structure, to provide stable support for the whole fan system.

[0038] The bearing assembly 200 is installed in the installation hole 110, and is used to support the rotating movement of the fan shaft. In the embodiment, the bearing assembly 200 comprises a bearing body (not shown) and a bearing sleeve sleeved on the outside of the bearing body. The bearing sleeve is preferably made of rubber material, and can play a role of buffering and shock absorption.

[0039] The guide piece 300 is fixed to the outer edge of one end of the bearing seat 100 towards the insertion direction of the fan shaft. The outer edge refers to the outer part of the opening edge of the installation hole 110 of the bearing seat 100.

[0040] The guide piece 300 has a tapered cylindrical portion 320 extending to the inside of the installation hole 110. The tapered cylindrical portion 320 is coaxially arranged with the bearing assembly 200, that is, the center axis of the tapered cylindrical portion 320 coincides with the center axis of the bearing assembly 200, to ensure that the fan shaft can be inserted into the bearing body along the correct direction. The "tapered" of the tapered cylindrical portion 320 means that its inner diameter gradually decreases along the axial direction, forming a funnel-shaped entrance, thereby playing a role of guiding the fan shaft.

[0041] The above-mentioned air conditioner indoor unit fan bearing structure effectively solves the installation problem caused by the deep bearing seat by setting the guide piece 300, that is, even in the invisible case, the fan shaft can be smoothly inserted into the bearing through the guidance of the tapered cylindrical portion 320, realizing the function of blind assembly; through the guidance of the tapered cylindrical portion 320, the fan shaft can be easily inserted into the bearing assembly 200 without accurate alignment, greatly improving the assembly efficiency.

[0042] In the embodiment, the guide 300 is fixedly connected with the bearing seat 100 through the buckle structure. Through the buckle structure connection, the guide 300 can be quickly and firmly installed on the bearing seat 100 without using additional fasteners such as screws and glue, thereby improving the assembly efficiency and reducing the manufacturing cost.

[0043] The buckle structure can have various forms, for example, the cooperation of elastic clamping jaws and clamping grooves, or the cooperation of protrusions and recesses.

[0044] In the embodiment, the guide 300 is made of an engineering plastic with a certain elasticity, and the guide 300 has an annular support portion 310, a plurality of clamping jaws 330 are circumferentially arranged on the annular support portion 310, the outer peripheral wall of the bearing seat 100 is provided with clamping grooves 120 matched with the clamping jaws 330, and the clamping jaws 330 are clamped into the clamping grooves 120 to form a buckle structure. The annular support portion 310 is an important component of the guide 300, which is annular in shape, used to support the conical cylindrical portion 320 and provide a mounting base surface for the clamping jaws 330. The clamping jaws 330 can be uniformly or non-uniformly distributed along the circumferential direction of the annular support portion 310. The number of clamping jaws 330 can be designed according to actual needs, for example, three, four or more. The outer peripheral wall of the bearing seat 100 is provided with clamping grooves 120 matched with the clamping jaws 330. The shape and size of the clamping grooves 120 are matched with those of the clamping jaws 330 to ensure that the clamping jaws 330 can be firmly clamped into the clamping grooves 120. When the clamping jaws 330 are clamped into the clamping grooves 120, a buckle structure is formed to fix the guide 300 on the bearing seat 100.

[0045] For example, in a specific embodiment, the annular support portion 310 of the guide 300 is uniformly circumferentially distributed with four clamping jaws 330, the clamping jaws 330 are shaped like hooks, the roots of the clamping jaws 330 are connected with the annular support portion 310, and the top portions of the clamping jaws 330 are sharp hooks. The outer peripheral wall of the bearing seat 100 is correspondingly provided with four rectangular clamping grooves, the size of the rectangular clamping grooves is slightly larger than the size of the roots of the clamping jaws, so that the clamping jaws 330 can be smoothly inserted. When the guide 300 is installed on the bearing seat 100, the hooks of the clamping jaws 330 will catch the edges of the rectangular clamping grooves, thereby achieving a firm connection.

[0046] In the embodiment, the clamping grooves 120 are annular grooves arranged along the outer peripheral wall of the bearing seat 100. The annular groove refers to a groove that continuously surrounds the outer peripheral wall of the bearing seat 100. The design of the annular groove can simplify the machining process of the bearing seat 100 and improve the production efficiency. At the same time, the annular groove also provides greater freedom for the installation of the clamping jaws 330, and the positions and numbers of the clamping jaws 330 can be adjusted as needed.

[0047] In the embodiment, the axial distance between the small end surface of the conical cylinder portion 320 and the end surface of the bearing assembly 200 is designed to be 0-5mm. The distance is set to ensure that the fan shaft can be smoothly inserted into the bearing body while avoiding interference between the conical cylinder portion 320 and the bearing. When the distance is 0, the small end surface of the conical cylinder portion 320 is in close contact with the end surface of the bearing assembly 200, which can provide better guiding effect. When the distance is not 0, a certain buffer space can be provided to allow the fan shaft to have certain adjustment allowance during insertion. In the embodiment, the preferred axial distance is 2mm. At this distance, both good guiding effect and avoidance of friction between the conical cylinder portion 320 and the bearing assembly 200 can be ensured.

[0048] In the embodiment, the minimum inner diameter of the conical cylinder portion 320 is equal to or slightly larger than the inner hole diameter of the bearing assembly 200 (the inner hole diameter of the bearing body) to ensure that the fan shaft can smoothly enter the bearing body after passing through the conical cylinder portion 320. If the minimum inner diameter of the conical cylinder portion 320 is smaller than the inner hole diameter of the bearing assembly 200, the fan shaft cannot enter the bearing body. If the minimum inner diameter of the conical cylinder portion 320 is much larger than the inner hole diameter of the bearing assembly 200, the guiding effect will be reduced.

[0049] In the embodiment, the conical angle of the conical cylinder portion 320 is α, where α is preferably 60°-90°.

[0050] In the embodiment, as shown in Figure 5 The small end portion of the conical cylinder portion 320 is also provided with an annular boss portion 340. The annular boss portion 340 extends in the axial direction, and the fan shaft can be more smoothly and accurately inserted into the bearing hole through the guidance of the annular boss portion 340. In addition, the annular boss portion 340 can also enhance the structural strength of the guide 300.

[0051] In the embodiment, the length of the bearing seat 100 is in the range of 30-40mm. The length of the bearing seat 100 directly affects the fixing stability of the bearing and the sealing performance of the overall structure. If the bearing seat 100 is too short, the bearing is not fixed firmly enough and is prone to looseness or deviation, which affects the normal operation of the fan. If the bearing seat 100 is too long, it will increase the material cost and assembly difficulty, and may occupy too much space.

[0052] The utility model also includes an air conditioner comprising the above-mentioned air conditioner indoor unit fan bearing structure. By adopting the above-mentioned air conditioner indoor unit fan bearing structure, the air conditioner can effectively solve the installation inconvenience problem caused by the deep bearing seat 100, improve the assembly efficiency, reduce the manufacturing cost, and improve the reliability and sealing performance of the product.

[0053] The above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, for those skilled in the art, the technical solutions recorded in the foregoing examples can still be modified, or some of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed by the present application.

Claims

1. A fan bearing structure for an air conditioner indoor unit, characterized in that, include: The bearing housing has mounting holes for mounting bearing assemblies; The bearing assembly is installed in the mounting hole; A guide member is fixed to the outer edge of one end of the bearing housing facing the insertion direction of the fan shaft. The guide member has a tapered cylindrical portion extending into the mounting hole. The tapered cylindrical portion is coaxially arranged with the bearing assembly and is used to guide the fan shaft into the bearing assembly.

2. The air conditioner indoor unit fan bearing structure according to claim 1, characterized in that, The guide component is fixedly connected to the bearing seat via a snap-fit ​​structure.

3. The air conditioner indoor unit fan bearing structure according to claim 2, characterized in that, The guide member has an annular support portion that abuts against the end of the bearing seat. The annular support portion is provided with multiple claws in the circumferential direction. The outer peripheral wall of the bearing seat is provided with a groove that cooperates with the claws. The claws are engaged in the groove to form the snap-fit ​​structure.

4. The air conditioner indoor unit fan bearing structure according to claim 3, characterized in that, The slot is an annular groove provided along the outer peripheral wall of the bearing seat.

5. The air conditioner indoor unit fan bearing structure according to claim 1, characterized in that, The axial distance between the small end face of the tapered cylinder and the end face of the bearing assembly is 0-5mm.

6. The air conditioner indoor unit fan bearing structure according to claim 1, characterized in that, The minimum inner diameter of the tapered cylindrical section is greater than or equal to the inner diameter of the bearing assembly.

7. The air conditioner indoor unit fan bearing structure according to claim 1, characterized in that, The small end of the tapered cylindrical section is provided with an annular boss.

8. The air conditioner indoor unit fan bearing structure according to claim 1, characterized in that, The bearing assembly includes a bearing body and a bearing sleeve fitted on the outside of the bearing body.

9. The air conditioner indoor unit fan bearing structure according to claim 1, characterized in that, The length of the bearing housing is in the range of 30-40mm.

10. An air conditioner, characterized in that, Includes the air conditioner indoor unit fan bearing structure as described in any one of claims 1-9.

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