CN209100487U - A kind of self-aligning bearing and air conditioner - Google Patents

Abstract

The utility model provides a kind of self-aligning bearing and air conditioner, the self-aligning bearing includes bearing block and bearing body, the bearing block is equipped with first shaft hole, expansion forms bearing bore to a part of the first shaft hole outward, the inner peripheral surface of the bearing bore is annular surface, the bearing body is mounted in the bearing bore, the bearing body is equipped with the second axis hole, the outer peripheral surface of the bearing body is the matched annular surface in inner peripheral surface part with the bearing bore, the inner peripheral surface of the bearing bore forms the elongated surfaces of annular in the two sides of the bearing body, in the bearing bore radial rotating occurs for the bearing physical efficiency.Self-aligning bearing described in the utility model has the function of finding accurately automatically, and bearing body has certain rotation space in bearing bore, when shaft bias, bearing body will receive radial power, it turns to bearing body and reduces vibration and noise with shaft concentric position, guarantee shaft rotary balance.

Description

A kind of self-aligning bearing and air conditioner

Technical field

The utility model relates to air conditioner technical field, in particular to a kind of self-aligning bearing and air conditioner.

Background technique

Bearing is the part for supporting shaft rotation, will use bearing in air conditioner, if the wind wheel of air-cooled ducted air conditioner is by turning One end of axis connection, shaft is connected to motor, and the other end is fixed on bearing, support shaft rotation.Air conditioner in the prior art Bearing be made of rubber bearing seat and ball bearing body, offered in bearing block for the axis hole of shaft insertion and for bearing The fixed bearing bore of body, forms step surface between bearing bore two sides and axis hole, bearing body is fixed by the limit of two sides step structure In bearing bore, the through-hole that shaft passes through bearing body is connect with bearing body, makes shaft by radial and axial limit, shaft rotation When drive bearing body to synchronize axial rotation, reduce pivoting friction.But shaft can push up the side of bearing body, bearing body in assembly Stress deflects, and bias occurs in shaft, can not reset in shaft rotation process middle (center) bearing body.Shaft eccentric rotary can cause to shake The problems such as width increases, generation noise, damage parts, air-conditioning reduced service life.

Utility model content

In view of this, the utility model is directed to a kind of self-aligning bearing, asked with solving above-mentioned technology to a certain extent At least one of topic aspect.

In order to achieve the above objectives, the technical solution of the utility model is achieved in that

A kind of self-aligning bearing, including bearing block and bearing body, the bearing block are equipped with first shaft hole and bearing bore, the axis The inner peripheral surface for holding chamber is annular surface, and the bearing bore and the first shaft hole are concentric, and the bearing body is mounted on the bearing bore Interior, the bearing body is equipped with the second axis hole, and the outer peripheral surface of the bearing body is matched with the inner peripheral surface part of the bearing bore The inner peripheral surface of annular surface, the bearing bore forms the elongated surfaces of annular, the bearing physical efficiency in the left and right sides of the bearing body Radial rotating occurs in the bearing bore.

Further, the central angle alpha of the cross-sectional curve of the elongated surfaces is between 10 °~30 °.

Further, the ratio of the diameter D3 of the diameter D1 and bearing bore of the first shaft hole between 1/3 to 2/3 it Between.

Further, ratio of the elongated surfaces along the axial length A of the first shaft hole and the diameter D3 of the bearing bore Value is between 1/15 to 2/15.

Further, meet relationship between the diameter D1 of the first shaft hole and the diameter D2 of second axis hole: 2.5mm ≥D1-D2≥0.5mm。

Further, the bearing block successively includes guide part, flange portion and spindle nose along the first shaft hole extending direction Portion, the diameter of the flange portion are greater than the diameter of the guide part, form Step-edge Junction between the flange portion and the guide part Structure.

Further, the end face of the shaft head is equipped with gas vent.

Further, a plurality of convex ribs to raise upward are arranged in interval on the periphery wall of the flange portion.

Further, the guide surface that the guide part in the open end of the first shaft hole there is opening to increase.

Compared with the existing technology, self-aligning bearing described in the utility model has the advantage that

Self-aligning bearing described in the utility model has the function of finding accurately automatically, and bearing body has certain in bearing bore Rotation space, when shaft bias, bearing body will receive radial power, turn to bearing body and shaft concentric position, guarantee Shaft rotary balance reduces vibration and noise.

The another object of the utility model is to propose a kind of air conditioner, including above-mentioned self-aligning bearing.

Compared with the existing technology, air conditioner described in the utility model has the advantage that

Self-aligning bearing can automatically by bearing body be adjusted to shaft concentric position, reduce motor operation generate vibration and Noise improves user experience, extends air-conditioning service life.

Detailed description of the invention

The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.? In attached drawing:

Fig. 1 is the cross-sectional view of self-aligning bearing described in the utility model embodiment；

Fig. 2 is the cross-sectional view of bearing block described in the utility model embodiment；

Fig. 3 is the perspective view one of self-aligning bearing described in the utility model embodiment；

Fig. 4 is the perspective view two of self-aligning bearing described in the utility model embodiment；

Fig. 5 is the scale diagrams of self-aligning bearing described in the utility model embodiment.

Description of symbols:

1- bearing block, 11- first shaft hole, 12- guide part, 13- flange portion, 14- shaft head, 15- guide surface, 16- convex ribs, 17- gas vent, 18- groove, 19- bearing bore, 2- bearing body, the second axis hole of 21-, 22- elongated surfaces.

Specific embodiment

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

In addition, be previously mentioned in the embodiments of the present invention be related to directionality instruction (such as upper and lower, left and right, it is preceding, Afterwards ...), then directionality instruction is only used for explaining opposite between each component under a certain particular pose (as shown in the picture) Positional relationship, motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.

All directions or positional relationship are the position based on attached drawing in the text being previously mentioned in the embodiments of the present invention Relationship is set, only for facilitating description the utility model and simplifying description, rather than implies or imply signified device or element The specific orientation that must have, should not be understood as limiting the present invention.If being related in the utility model embodiment The description of " first ", " second " etc., then the description for being somebody's turn to do " first ", " second " etc. is used for description purposes only, and should not be understood as referring to Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result, Two " feature can explicitly or implicitly include at least one of the features.

Embodiment 1

The present embodiment provides a kind of self-aligning bearings, are used to support shaft rotation.Referring to figs. 1 and 2, self-aligning bearing packet Bearing block 1 and bearing body 2 are included, bearing block 1 is rubber elastomeric material, and bearing body 2 is the hard materials such as plastics or metal, bearing Seat 1 is equipped with first shaft hole 11, and bearing body 2 is equipped with the second axis hole 21 of perforation, and expansion is formed a part of first shaft hole 11 outward The inner peripheral surface of bearing bore 19, bearing bore 19 is annular surface, and first shaft hole 11 and bearing bore 19 are concentric.Bearing body 2 is mounted on bearing In chamber 19, outer peripheral surface is the matched annular surface in inner peripheral surface part with bearing bore 19.

The diameter of first shaft hole 11 is greater than the diameter of the second axis hole 21, and shaft is stretched when assembling from the open end of first shaft hole 11 Enter, and enter the second axis hole 21 and fixed with bearing body 2, there is gap, shaft between shaft outer wall and the inner wall of first shaft hole 11 When rotation, bearing body 2 follows rotation, and axial rolling occurs between the outer peripheral surface of bearing body 2 and the inner peripheral surface of bearing bore 19, by Rotation friction it is small, lubricant can be added between bearing body 2 and bearing bore 19, play lubricating action, reduce Bearing Grinding Damage.

The inner peripheral surface of bearing bore 19 forms the elongated surfaces 22 of annular, the section of elongated surfaces 22 in the left and right sides of bearing body 2 The central angle alpha of camber line is between 10 °~30 °, i.e., bearing body 2 has certain radial rotating space in bearing bore 19.Turn Axis may push up the side of bearing body 2 when assembling, bearing body 2 can be occurred by radial force along the annular inner peripheral surface of bearing bore 19 Radial rotating, after shaft is connect into the second axis hole 21 with bearing body 2, bearing body 2 can be returned to the position concentric with shaft.Such as Eccentric rotary occurs for fruit shaft, and bearing body 2 will receive radial power, turns to bearing body 2 and turns with shaft concentric position, guarantee Axis rotary balance reduces vibration and noise, prolonged mechanical service life.

Embodiment 2

The present embodiment is on the basis of above-described embodiment 1, and in conjunction with shown in Fig. 3 and Fig. 4, the bearing block 1 is along first shaft hole 11 extending directions successively include guide part 12, flange portion 13 and shaft head 14, and first shaft hole 11 is whole through bearing block 1.

The end face of guide part 12 is equipped with the open end of first shaft hole 11, when shaft is assembled, is inserted into bearing block 1 from open end, The guide surface 15 that there is opening to increase at the edge of open end, can be oriented to when shaft enters first shaft hole 11, be convenient for shaft Installation.

The diameter of flange portion 13 is greater than the diameter of guide part 12, forms step structure between flange portion 13 and guide part 12, Facilitate the installation positioning of bearing block 1.The a plurality of convex ribs 16 to raise upward are arranged in interval on the periphery wall of flange portion 13, reduce flange portion 13 periphery wall and the contact area of installation position, increasing friction force prevent bearing block 1 from skidding and rotate.Flange portion 13 and spindle nose The end face that portion 14 connects is equipped with multiple grooves 18, is convenient for 1 machine-shaping of bearing block, moreover it is possible to play the role of absorbing vibration.

Shaft front end continues to forward extend out certain distance after passing through bearing body 2, prevents de- from bearing in shaft rotation process From shaft head 14 is used to support shaft front end.The end face of shaft head 14 is equipped with gas vent 17, bearing when for shaft rotation to be discharged The frictional heat generated between body 2 and bearing block 1 reduces bearing wear.

Embodiment 3

The present embodiment is on the basis of above-described embodiment 1, and as shown in connection with fig. 5, the diameter of first shaft hole 11 is D1, the second axis The diameter in hole 21 is D2, and for D1 between 7mm~9mm, D2 meets relationship between 6mm~7mm between D1 and D2: 2.5mm >=D1-D2 >=0.5mm controls the diameter difference of first shaft hole 11 and the second axis hole 21, will not be with first when rotating shaft The contact of 11 wall surface of axis hole, while limiting the Oscillation Amplitude of shaft.The diameter of bearing bore 19 be D3, D3 between 14mm~18mm it Between, and meeting relationship D1/D3=1/3~2/3, the increase of 19 size of bearing bore can prevent bearing body 2 from falling off, and increase inner peripheral surface face Product, reduction pivoting friction, but bearing bore 19 are oversized to will increase technology difficulty, raising production cost.

Bearing bore 19 relative to the two sides elongated surfaces 22 of bearing body 2 axial length be A, A between 1mm~1.5mm, And meeting relationship A/D3=1/15~2/15, the central angle of the cross-sectional curve of elongated surfaces 22 is α, and bearing body 2 turns with the radial direction of α Dynamic space, α is between 10 °~30 °.Elongated surfaces 22 are that bearing body 2 provides rotation aligning space, extend few then bearing body 2 Rotation space is too small, and aligning is not in place, extends excessively, then the thickness of bearing body 2 reduces, and unreliable to rotating shaft support, shaft is easy Offset.

Embodiment 4

A kind of air conditioner, the self-aligning bearing including motor, blower, shaft and above-described embodiment, assembling in shaft, Shaft one end connects motor, and the other end is fixed on bearing.When air conditioner is run, motor rotates shaft, and self-aligning bearing can Automatically the bearing body 2 in bearing block 1 is adjusted to the vibration and noise generated with shaft concentric position, reduction motor operation, changed Kind user experience, extends air-conditioning service life.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (10)

1. a kind of self-aligning bearing, which is characterized in that including bearing block (1) and bearing body (2), the bearing block (1) is equipped with first Axis hole (11) and bearing bore (19), the inner peripheral surface of the bearing bore (19) are annular surface, the bearing bore (19) and described first With one heart, the bearing body (2) is mounted in the bearing bore (19) axis hole (11), and the bearing body (2) is equipped with the second axis hole (21), the outer peripheral surface of the bearing body (2) is the matched annular surface in inner peripheral surface part with the bearing bore (19), the bearing The inner peripheral surface of chamber (19) forms the elongated surfaces (22) of annular in the left and right sides of the bearing body (2), and the bearing body (2) can be Radial rotating occurs in the bearing bore (19).

2. self-aligning bearing according to claim 1, which is characterized in that the central angle of the cross-sectional curve of the elongated surfaces (22) α is between 10 °~30 °.

3. self-aligning bearing according to claim 1, which is characterized in that the diameter D1 and the axis of the first shaft hole (11) The ratio of the diameter D3 of chamber (19) is held between 1/3 to 2/3.

4. self-aligning bearing according to claim 3, which is characterized in that the elongated surfaces (22) are along the first shaft hole (11) Axial length A and the bearing bore (19) diameter D3 ratio between 1/15 to 2/15.

5. self-aligning bearing according to claim 3, which is characterized in that the diameter D1 of the first shaft hole (11) and described the Meet relationship between the diameter D2 of two axis holes (21): 2.5mm >=D1-D2 >=0.5mm.

6. -5 any self-aligning bearing according to claim 1, which is characterized in that the bearing block (1) is along the first axle Hole (11) extending direction successively includes guide part (12), flange portion (13) and shaft head (14), the diameter of the flange portion (13) Greater than the diameter of the guide part (12), step structure is formed between the flange portion (13) and the guide part (12).

7. self-aligning bearing according to claim 6, which is characterized in that the end face of the shaft head (14) is equipped with gas vent (17)。

8. self-aligning bearing according to claim 6, which is characterized in that be spaced setting on the periphery wall of the flange portion (13) The a plurality of convex ribs (16) to raise upward.

9. self-aligning bearing according to claim 6, which is characterized in that the guide part (12) is in the first shaft hole (11) Open end have opening increase guide surface (15).

10. a kind of air conditioner, which is characterized in that including the self-aligning bearing as described in claim 1-9 is any.