CN220522863U

CN220522863U - Cross flow fan

Info

Publication number: CN220522863U
Application number: CN202320147155.2U
Authority: CN
Inventors: 吴国良
Original assignee: Suzhou City Hengda Electronic Element Factory
Current assignee: Suzhou City Hengda Electronic Element Factory
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2024-02-23
Anticipated expiration: 2033-02-07

Abstract

The utility model discloses a cross flow fan, which comprises an impeller, a mounting plate positioned at one end of the impeller and a bearing sleeve clamped on the mounting plate, wherein the impeller is provided with a rotating shaft protruding into the bearing sleeve, the bearing sleeve is provided with at least two positioning convex strips distributed along the circumferential direction and a clamping groove positioned at one side of the positioning convex strips, the mounting plate is provided with at least two protruding pieces distributed along the circumferential direction, and the protruding pieces are clamped in the clamping groove. Compared with the prior art, the utility model optimizes the structure of the bearing sleeve, so that the dismounting operation between the bearing sleeve and the mounting plate is more convenient, the mounting and the maintenance of the impeller are more convenient and efficient, the whole operation process is time-saving and labor-saving, and the production efficiency is improved.

Description

Cross flow fan

Technical Field

The utility model relates to the technical field of fans and fans, in particular to a cross flow fan.

Background

The cross flow fan, also called a cross flow fan, has an impeller in a long cylindrical shape, which is composed of a large number of blades, and when the impeller rotates, one side of the air flow impeller enters the inside of the impeller and is discharged from the other side of the impeller, and is widely used in places such as an elevator car, a traveling control room, a corridor aisle, and the like. A conventional cross flow fan generally includes a pair of mounting plates for fixedly mounting the cylindrical impeller and also for mounting and fixing the cross flow fan to other components (e.g., an elevator car), specifically, two ends of the cylindrical impeller are mounted on the mounting plates, so that the mounting plates are fixedly connected with the impeller into a whole, shaft portions protruding from two ends of the impeller are connected and matched with bearings on the mounting plates, and thus the impeller can be rotated by means of the bearings after being mounted on the mounting plates. For the installation of the bearing and the mounting plate, the common mode is that the bearing is firstly installed in a bearing sleeve, and then the bearing sleeve is forcefully plugged into a preset mounting hole on the mounting plate, so that the bearing sleeve is clamped on the mounting plate; alternatively, a tripod (or a triangular disk) is fixedly mounted on the mounting plate, and the bearing is placed on the tripod. However, both of these operation modes are troublesome, and in particular, the disassembly and assembly of the impeller are inconvenient, for example, the bearing sleeve needs to be pulled out with a great force or the bearing can be disassembled from the impeller after the tripod is disassembled by using a tool, and thus the operation is troublesome.

Disclosure of Invention

The utility model aims to solve the technical problems of inconvenient disassembly and assembly of impellers and poor efficiency in the prior art by providing a cross flow fan.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a cross-flow fan, includes the impeller, is located the mounting panel of impeller one end, blocks the bearing housing of holding on the mounting panel, the impeller is equipped with the pivot that stretches into in the bearing housing convexly, the bearing housing is equipped with two at least location sand grip and the grip slot that is located location sand grip one side that distribute along the circumferencial direction, be equipped with two at least lug that distribute along the circumferencial direction on the mounting panel, the lug block hold in the grip slot.

Further, one end of the clamping groove is closed and provided with a stop part for limiting the lug, and the other end of the clamping groove is open and provided with a notch for the lug to slide into or slide out of the clamping groove.

Further, a mounting hole is formed in the mounting plate, and the protruding pieces are distributed in the mounting hole; the bearing sleeve is arranged in the mounting hole, and the lug slides into or out of the clamping groove in a rotating mode.

Further, at least two yielding notches between the protruding pieces are formed on the inner side of the mounting hole, and the yielding notches and the protruding pieces are alternately distributed along the circumferential direction.

Further, the number of the yielding notches is equal to the number of the positioning raised strips, and the extending length of the yielding notches is larger than that of the positioning raised strips so that the positioning raised strips can pass through the yielding notches.

Further, the bearing sleeve comprises an insulating body and a bearing accommodated in the insulating body, the insulating body is provided with an inner surface which is abutted to the mounting plate, an annular convex wall which protrudes inwards from the inner surface and penetrates through the mounting hole, and an accommodating groove which is formed on the inner side of the annular convex wall and accommodates the bearing, the positioning convex strips are distributed on the surface of the annular convex wall, and the clamping groove is formed between the positioning convex strips and the inner surface.

Further, a plurality of protruding parts protruding towards the bearing are arranged in the accommodating groove, and the protruding parts are distributed on the periphery of the bearing along the circumferential direction and are pressed on the bearing.

Further, a guiding inclined plane is arranged at the notch of the clamping groove, and the stop part is integrally connected with the inner surface.

Further, the width of the clamping groove is narrowed in the direction approaching the stop part.

Further, the insulating body is provided with an outer surface and a plurality of concave openings distributed on the outer surface, and the plurality of concave openings are distributed along the circumferential direction and are used for being matched with a disassembling tool to realize the rotation of the insulating body.

Compared with the prior art, the utility model optimizes the structure of the bearing sleeve, so that the dismounting operation between the bearing sleeve and the mounting plate is more convenient, the mounting and the maintenance of the impeller are more convenient and efficient, the whole operation process is time-saving and labor-saving, and the production efficiency is improved.

Drawings

Fig. 1 is a perspective combined view of a cross flow fan according to the present utility model.

Fig. 2 is an exploded perspective view of the cross flow fan according to the present utility model.

Fig. 3 is a schematic view of the bearing housing of the cross flow fan according to the present utility model when it is detached from the impeller shaft.

Fig. 4 is a perspective view of a bearing housing of a cross flow fan according to the present utility model.

Fig. 5 is a schematic view of a bearing housing of a cross flow fan according to the present utility model fixed to a mounting plate.

Fig. 6 is a schematic diagram showing the cooperation between the bearing housing and the mounting plate of the cross flow fan according to the present utility model.

Fig. 7 is a side view of a bearing housing of a cross flow fan according to the present utility model.

Fig. 8 is a schematic view of a bearing housing and a disassembly tool of the cross-flow fan according to the present utility model.

Detailed Description

Referring to fig. 1 to 7, the present utility model provides a cross flow fan 100, which includes a cylindrical impeller 10, a motor 20 connected to one end of the impeller 10, a connection plate 30 connected between the motor 20 and the impeller 10, a mounting plate 40 mounted to the other end of the impeller 10, a bearing housing 50 clamped to the mounting plate 40 and connected to the impeller 10, an upper baffle 60 and a lower screen 70 shielding the upper and lower sides of the impeller 10, and a side baffle 80 positioned at one side of the impeller 10. The impeller 10 is rotated by the motor 20 to generate an air flow, and the air flow is discharged to one side (i.e., laterally) under the action of the upper baffle 60 and the side baffle 80, and the bearing housing 50 is fixed on the mounting plate 40 in a rotating and clamping manner and is cooperatively connected with the impeller 10, so that one end of the impeller 10 can be mounted on the mounting plate 40 and can rotate. A part of the structure is explained in detail below.

The impeller 10 is elongated and extends in a horizontal direction, and is provided with a rotating shaft 11 protruding outwards, one end of the rotating shaft 11 is fixedly connected with the motor 20, and the other end of the rotating shaft 11 protrudes into the bearing sleeve 50 and rotates in the bearing sleeve 50. The impeller 10 has a plurality of circumferentially distributed sectors 12, the length of the sectors 12 extending along the length of the impeller 10. In addition, cover plates 13 facing the mounting plate 40 are disposed at both ends of the impeller 10, and the rotating shaft 11 of the impeller 10 protrudes outward beyond the cover plates 13 to be connected with the motor 20 and the bearing housing 50, respectively.

As shown in fig. 2 and 3, the mounting plate 40 is L-shaped, and includes a main plate 41, top and bottom plates 42 and 43 disposed on upper and lower sides of the main plate 41, a fixing plate 44 disposed on a front side of the main plate 41, and a connecting plate 45 disposed on a rear side of the main plate 41. The main plate 41 faces the cover 13 of the impeller 10, and at least two protruding tabs 47 protruding toward the inside of the mounting hole 46 are provided on the main plate 41, the mounting hole 46 is used for accommodating the bearing sleeve 50, the protruding tabs 47 are used for clamping and fixing the bearing sleeve 50, the rotating shaft 11 of the impeller 10 protrudes into the mounting hole 46 and is mounted in the bearing sleeve 50, it should be noted that the protruding tabs 47 are uniformly distributed along the circumferential direction of the mounting hole 46, and a yielding gap 48 (refer to fig. 6) is formed between two adjacent protruding tabs 47, at least two yielding gaps 48 are equal to the positioning protruding strips 56 (refer to fig. 6), so that the bearing sleeve 50 can be smoothly mounted in the mounting hole 46, the yielding gaps 48 and the protruding tabs 47 are alternately distributed along the circumferential direction, and the protruding tabs 47 can be clamped into clamping grooves 561 (refer to below) of the bearing sleeve 50 in the rotating process of the bearing sleeve 50, thereby fixing the bearing sleeve 50 in the mounting hole 46. The top plate 42 and the bottom plate 43 are respectively formed by integrally bending and extending from the top edge and the bottom edge of the main plate 41, and the top plate 42 is provided with a clamping port 421 for hanging. The fixing plate 44 is integrally bent and extended from the front side edge of the main plate 41 and is perpendicular to the main plate 41, and a pair of fixing holes 441 are formed in the fixing plate 44 for realizing a fixing connection function, so that the mounting requirement of the cross flow fan is met. The connecting plate 45 is integrally bent and extended from the rear side edge of the main board 41, and is perpendicular to the main board 41, and the connecting plate 45 is used for fixedly connecting the lower screen 70.

As shown in fig. 4, the bearing housing 50 includes an insulating body 51 and a bearing 52 mounted in the insulating body 51, the insulating body 51 is circular, an inner surface 53, an annular convex wall 54 protruding from the inner surface 53 toward the impeller 10, a receiving groove 55 formed inside the annular convex wall 54, a plurality of positioning ribs 56 distributed on the periphery of the annular convex wall 54, and an outer surface 57, a boss portion 58 protruding outwards from the outer surface 57, and a plurality of concave openings 59 formed on the outer surface 57 are formed on the outer side of the insulating body 51. Wherein the inner surface 53 is disposed around the periphery of the annular convex wall 54, and the annular convex wall 54 protrudes from the inner surface 53; the accommodating groove 55 is used for accommodating the bearing 52, a plurality of protruding parts 551 protruding towards the bearing 52 are arranged in the accommodating groove 55, the protruding parts 551 are distributed on the periphery of the bearing 52 along the circumferential direction and are pressed against the bearing 52, the bearing 52 is reliably and firmly fixed in the accommodating groove 55 through interference fit with the bearing 52, and a round hole 521 for accommodating the rotating shaft 11 is arranged in the center of the bearing 52; the positioning ribs 56 are distributed on the periphery of the annular convex wall 54 and integrally formed with the annular convex wall 54, the positioning ribs 56 are uniformly distributed along the circumferential direction, a clamping groove 561 is formed between the positioning ribs 56 and the inner surface 53 of the insulating body 51, and is used for clamping the tab 47 on the mounting plate 40, preferably, the positioning ribs 56 and the clamping groove 561 are elongated, one end of the positioning rib 56 is provided with a stop portion 562 protruding towards the inner surface 53, and the stop portion 562 is integrally connected with the inner surface 53, so as to stop at the end of the clamping groove 561 and play a role of stopping the tab 47, preferably, the other end of the positioning rib 56 is also provided with a guiding inclined plane 563, as shown in fig. 7, a notch 564 is formed between the guiding inclined plane 563 and the inner surface 53, and the width of the notch 564 is larger than that of the clamping groove 561, so that the tab 47 can be smoothly clamped into the clamping groove 561. It should be noted that, the positioning protruding strips 56 are all disposed to extend in the same direction, for example, the clamping groove 561 and the notch 564 are all disposed to face in the same direction, so that the inner surface 53 of the insulating body 51 is disposed to face counterclockwise, that is, the positioning protruding strips 56 are all integrally formed by extending from the stop portion 562 in the counterclockwise direction, preferably, in order to make the bearing sleeve 50 and the mounting plate 40 more firmly combined, the width of the clamping groove 561 is narrowed in the direction close to the stop portion 562, so that the clamping force or the interference force received by the tab 47 in the process of clamping the clamping groove 561 is greater and greater, and the bearing sleeve 50 and the mounting plate 40 are in a tighter and tighter state. The plurality of concave openings 59 of the outer surface 57 of the insulating body 51 are distributed along the circumferential direction, and are used for being matched with a disassembling tool 90, disassembly and assembly are achieved by screwing the bearing sleeve 50, as shown in fig. 8, the concave openings 59 are formed at the edge position of the outer surface 57 and extend to the side edge of the insulating body 51, the disassembling tool 90 is provided with a cover body 91 and a plurality of buckling protrusions 92 formed on the cover body 91, the plurality of buckling protrusions 92 are distributed along the circumferential direction and are arranged in one-to-one correspondence with the plurality of concave openings 59, when the bearing sleeve 50 is screwed and operated, the cover body 91 is required to be firstly covered on the insulating body 51, the buckling protrusions 92 on the cover body 91 are enabled to be convexly clamped into the concave openings 59 of the insulating body 51, and then the disassembling tool 90 is rotated to conduct screwing operation on the bearing sleeve 50, so that the bearing sleeve 50 is fixed on the mounting plate 40 or detached from the mounting plate 40.

As shown in fig. 5 and 6, when the bearing housing 50 is mounted on the mounting plate 40, the positioning protrusion 56 on the insulating body 51 is aligned with the relief notch 48 in the mounting hole 46, and the positioning protrusion 56 passes through the relief notch 48 to reach the inner side of the mounting plate 40, and the inner surface 53 of the insulating body 51 abuts against the outer side of the mounting plate 40; then, the insulating body 51 is rotated to move the clamping groove 561 toward the tab 47, thereby clamping the tab 47 in the mounting hole 46 in the clamping groove 561, and thus, the fixed positioning of the bearing housing 50 and the mounting plate 40 is achieved. Conversely, when the tab 47 is disengaged from the clamping groove 561 and the positioning rib 56 is aligned with the relief notch 48, the positioning rib 56 is pulled out of the mounting hole 46, and the bearing housing 50 is removed from the mounting plate 40, by rotating the insulating body 51 in the opposite direction.

In summary, the cross-flow fan 100 according to the present utility model optimizes the structure of the bearing housing 50 to facilitate the assembly and disassembly operations with the mounting plate 40, thereby facilitating the installation and maintenance of the impeller 10, saving time and labor in the whole operation mode, and improving the production efficiency.

The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the utility model in any way, and any person skilled in the art may make many possible variations and modifications to the technical solution of the present utility model using the above disclosed method without departing from the scope of the technical solution of the present utility model, which is defined in the claims.

Claims

1. The utility model provides a cross-flow fan, includes impeller, the mounting panel that is located impeller one end, the bearing housing of card on the mounting panel, the impeller is equipped with the pivot that stretches into in the bearing housing, its characterized in that: the bearing housing is equipped with two at least location sand grip and the clamping groove that is located location sand grip one side of following the circumferencial direction distribution, be equipped with two at least lug that follow the circumferencial direction distribution on the mounting panel, the lug card hold in the clamping groove.

2. The cross flow fan as claimed in claim 1, wherein: one end of the clamping groove is closed and provided with a stop part for limiting the lug, and the other end of the clamping groove is open and provided with a notch for the lug to slide into or slide out of the clamping groove.

3. The cross flow fan as claimed in claim 2, wherein: the mounting plate is provided with a mounting hole, and the protruding pieces are distributed in the mounting hole; the bearing sleeve is arranged in the mounting hole, and the lug slides into or out of the clamping groove in a rotating mode.

4. A cross flow fan as claimed in claim 3, wherein: at least two yielding notches between the protruding pieces are formed on the inner side of the mounting hole, and the yielding notches and the protruding pieces are alternately distributed along the circumferential direction.

5. The cross flow fan as claimed in claim 4, wherein: the number of the yielding gaps is equal to that of the positioning raised strips, and the extending length of the yielding gaps is larger than that of the positioning raised strips so that the positioning raised strips can pass through the yielding gaps.

6. The cross flow fan as claimed in claim 5, wherein: the bearing sleeve comprises an insulating body and a bearing accommodated in the insulating body, wherein the insulating body is provided with an inner surface which is abutted to the mounting plate, an annular convex wall which protrudes inwards from the inner surface and penetrates through the mounting hole, and an accommodating groove which is formed in the inner side of the annular convex wall and accommodates the bearing, the positioning convex strips are distributed on the surface of the annular convex wall, and the clamping groove is formed between the positioning convex strips and the inner surface.

7. The cross flow fan as claimed in claim 6, wherein: the accommodating groove is internally provided with a plurality of protruding parts protruding towards the bearing, and the protruding parts are distributed on the periphery of the bearing along the circumferential direction and are pressed on the bearing.

8. The cross flow fan as claimed in claim 7, wherein: the notch of the clamping groove is provided with a guide inclined plane, and the stop part is integrally connected with the inner surface.

9. The cross flow fan as claimed in claim 8, wherein: the width of the clamping groove is narrowed in the direction close to the stop part.

10. The cross flow fan as claimed in any one of claims 6 to 9, wherein: the insulation body is provided with an outer surface and a plurality of concave openings distributed on the outer surface, wherein the concave openings are distributed along the circumferential direction and are used for being matched with a disassembly and assembly tool to realize the rotation of the insulation body.