CN217685210U

CN217685210U - Driving assembly and range hood

Info

Publication number: CN217685210U
Application number: CN202220903674.2U
Authority: CN
Inventors: 叶道鑫; 陈志刚; 陈小敏
Original assignee: BSH Electrical Appliances Jiangsu Co Ltd
Current assignee: BSH Electrical Appliances Jiangsu Co Ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-10-28
Anticipated expiration: 2032-04-19

Abstract

The application provides a modified drive assembly, smoke ventilator. One embodiment of the application relates to a driving component for a household appliance, which comprises a rotating shaft (5) and a transmission part (7) which are connected with each other, wherein the rotating shaft (5) is arranged to be suitable for driving the transmission part (7) to rotate, one of the rotating shaft (5) and the transmission part (7) is provided with a containing hole, and the other of the rotating shaft (5) and the transmission part (7) is provided with a free end (6) which is suitable for being fixed in the containing hole; the free end (6) is provided with a groove (8); the hole wall of the accommodating hole is provided with a threaded hole extending towards the groove (8), and a screwed screw rod (11) penetrates through the hole wall until the bottom end face of the screw rod (11) abuts against the bottom wall of the groove (8). Adopt the technical scheme of this application, help promoting and connect fixed stability between pivot and the driving medium.

Description

Driving assembly and range hood

[ technical field ] A method for producing a semiconductor device

The present application relates to the field of household appliances.

[ background of the invention ]

With the increasing demand of people for quality of life, more and more household appliances are equipped with driving devices, so that the household appliances have certain mobility to meet the increasing user demands. The driving device of the existing household appliance generally comprises a rotating shaft and a transmission part which are fixed through a bolt and a nut. However, the nut is easily loosened during the fixing, which affects the normal use of users and needs to be further improved and improved.

Unless otherwise supported by sufficient evidence, the prior art described herein is not meant to be an admission that such prior art is widely known to those of ordinary skill in the art to which this application pertains prior to the filing date of the present application.

[ summary of the invention ]

It is an object of this application embodiment to at least one technical problem above, propose an improved drive assembly, smoke ventilator.

One embodiment of the application relates to a driving assembly for a household appliance, which comprises a rotating shaft and a transmission member, wherein the rotating shaft and the transmission member are connected, the rotating shaft is suitable for driving the transmission member to rotate, one of the rotating shaft and the transmission member is provided with a containing hole, and the other of the rotating shaft and the transmission member is provided with a free end which is suitable for being fixed in the containing hole; the free end is provided with a groove; the hole wall of the accommodating hole is provided with a threaded hole extending towards the groove, and a screwed screw rod passes through the threaded hole until the bottom end face of the screw rod abuts against the bottom wall of the groove. Adopt the technical scheme of this application, help promoting and connect fixed stability between pivot and the driving medium.

In one possible embodiment, the free end is inserted into the receiving hole in the direction of extension of the axis of the spindle.

In one possible embodiment, when the free end is fixed in the receiving hole, the linear movement along the extension direction of the axis of the rotating shaft is the only freedom of movement of the free end relative to the receiving hole. Thus, the stability of connection and fixation between the rotating shaft and the transmission piece is improved.

In one possible embodiment, the receiving opening is a flat opening.

In one possible embodiment, the opening edge of the recess bears against a flat surface of the flat bore.

In one possible design, the periphery of the bottom end surface of the lead screw is provided with a circle of chamfer surface; when the bottom end face of the screw rod abuts against the bottom wall of the groove, the circle of chamfer face abuts against the side wall of the groove. Thus, the stability of connection and fixation between the rotating shaft and the transmission piece is improved.

In one possible design, the depth of the recess is no more than half the thickness of the free end.

In one possible design, the diameter of the portion of the lead screw that is disposed within the recess is smaller than the diameter of the portion of the lead screw that is outside the recess. Thus, the stability of connection and fixation between the rotating shaft and the transmission piece is improved.

In one possible design, the top end face of the lead screw is provided with a tool tightening groove; or the top end of the screw rod is provided with an expanded head. Like this, help promoting the convenience of lead screw dismouting operation.

In one possible embodiment, the free end fills the receiving opening. Thus, the stability of connection and fixation between the rotating shaft and the transmission piece is improved.

In one possible design, a motor is included for driving the shaft to rotate.

Another embodiment of the present application relates to a range hood, including an air inlet, a movable panel for controlling opening and closing of the air inlet, and a driving assembly as described in any one of the above; the driving component is used for driving the movable panel to move.

It should be noted that the appearances of "first" and "second" in this specification are for descriptive purposes only and are not intended to indicate relative importance; moreover, it is not a definition of the number of features that it defines; further, it is not a definition of a logical or sequential relationship to the features it defines.

The above summary of the present application is not intended to describe all possible implementations of the present application. Throughout this application, guidance is provided through lists of examples, which can be used in various possible combinations.

[ description of the drawings ]

The following drawings are merely illustrative and explanatory of the present application and do not limit the scope of the present application, wherein:

FIG. 1 is a schematic structural view of an embodiment of a range hood of the present application;

FIG. 2 is another schematic structural view of an embodiment of a range hood of the present application;

FIG. 3 is a schematic view of a portion of a range hood embodiment of the present application;

FIG. 4 is a partial cross-sectional structural view of a drive assembly of an embodiment of a range hood of the present application;

FIG. 5 is a schematic view of a shaft of a drive assembly of an embodiment of a range hood of the present application;

figure 6 is a partial cross-sectional view of a drive assembly of another range hood embodiment of the present application.

Reference numerals:

1-machine shell, 2-smoke collecting hood, 3-air inlet, 4-movable panel, 5-rotating shaft, 6-free end, 7-transmission piece, 8-groove, 9-side wall, 10-motor, 11-screw rod, 12-tool screwing groove, 13-expanding head, 14-cutting plane, 15-first crank, 16-second crank and 17-oil cup.

[ detailed description ] embodiments

To make the objects, solutions and advantages of the present application more clear, the present application is further described below with reference to the accompanying drawings and preferred embodiments.

An embodiment of a range hood as proposed in the present application, as shown in fig. 1 to 3, comprises a housing 1, a smoke collecting hood 2, an oil cup 17, a movable panel 4 and a driving assembly. The casing 1 is arranged above the fume collecting hood 2. The oil cup 17 is hung at the bottom end of the smoke collecting hood 2. The smoke collecting hood 2 is provided with an air inlet 3. And a movable panel 4 for controlling the opening and closing of the air inlet 3. And the driving component is used for driving the movable panel 4 to move. In particular, the driving assembly is used for driving the movable panel 4 to rotate and switch between a first position and a second position. When the movable panel 4 is in the first position, as shown in fig. 1 and 3, the movable panel 4 closes the air inlet 3. When the movable panel 4 is in the second position, as shown in fig. 2, the movable panel 4 protrudes forward to form a brim to open the air inlet 3.

The driving component comprises a rotating shaft 5, a transmission member 7, a motor 10, a first crank 15 and a second crank 16. The rotating shaft 5 is connected with the transmission piece 7. And the motor 10 is used for driving the rotating shaft 5 to rotate around the axis of the rotating shaft. Specifically, the motor 10 is a reduction motor. A rotating shaft 5 is arranged to drive the transmission member 7 to rotate. In other words, the motor 10 drives the rotating shaft 5 to rotate, and the rotating shaft 5 drives the transmission member 7 to rotate around the axis of the rotating shaft 5. The transmission member 7 is used for driving the movable panel 4 to move. The transmission member 7 and the first crank 15 are integrally arranged, the transmission member 7 is configured as a rotation central shaft of the first crank 15, the transmission member 7 drives the first crank 15 to rotate together, and specifically, the first crank 15 rotates around the transmission member 7. The second crank 16 is arranged symmetrically to the first crank 15, as shown in fig. 3. A first crank 15 and a second crank 16, each of which is fixedly connected to the movable panel 4. When the motor 10 is operated, the first crank 15 rotates the movable panel 4, and the rotating movable panel 4 rotates the second crank 16.

The transmission member 7 is provided with a receiving hole, and the rotating shaft 5 is provided with a free end 6 adapted to be fixed in the receiving hole. The receiving hole may be a through hole as shown in fig. 3 or a blind hole. The free end 6 of the shaft 5 is provided with a recess 8 as shown in figure 5. The hole wall of the accommodating hole is provided with a threaded hole extending towards the groove 8, and the lead screw 11 screwed with the threaded hole passes through until the bottom end face of the lead screw 11 abuts against the bottom wall of the groove 8, as shown in fig. 4, so that the connection and fixation between the rotating shaft 5 and the transmission member 7 are completed. By adopting the scheme, on one hand, the stability of connection and fixation between the rotating shaft 5 and the transmission piece 7 is improved; on the other hand, the assembly is convenient. It should be noted here that the feature "the hole wall of the receiving hole is provided with a threaded hole extending toward the recess 8" should be understood on the premise that the free end 6 of the rotating shaft 5 is inserted into the receiving hole and enters a mating state suitable for fixing with the transmission member 7.

The free end 6 of the rotary shaft 5 is inserted into the receiving hole in the extending direction of the axis of the rotary shaft 5. When the free end 6 of the rotating shaft 5 is fixed in the receiving hole, the linear motion along the extending direction of the axis of the rotating shaft 5 is the only freedom of motion of the free end 6 of the rotating shaft 5 relative to the receiving hole. Specifically, the receiving hole is a flat hole, as shown in fig. 4. The free end 6 of the rotating shaft 5 is in a flat shaft shape matched with the flat hole, and as shown in fig. 4, the accommodating hole is filled with the free end 6. The opening edge of the groove 8 is attached to the flat surface of the flat hole. The flat hole comprises two flat surfaces arranged in parallel and two arc surfaces arranged in opposite directions, and the two arc surfaces are used for connecting the two flat surfaces arranged in parallel, as shown in fig. 4. The free end 6 of the shaft 5 is machined from a solid cylinder which is first cut to form two cutting planes 14 parallel to each other and then one of the cutting planes 14 is formed with the groove 8, as shown in fig. 5.

The periphery of the bottom end face of the lead screw 11 is provided with a circle of chamfer face. When the bottom end surface of the lead screw 11 abuts against the bottom wall of the groove 8, a circle of chamfered surface abuts against the side wall 9 of the groove 8, as shown in fig. 4, the side wall 9 of the groove 8 is also a circle of chamfered surface.

The depth of the recess 8 is less than one fifth of the thickness of the free end 6, as shown in figures 4 and 5. Thus, the shallow recess 8 provides limited damage to the shaft 5, which helps to ensure that the free end 6 of the shaft 5 has sufficient strength. It should be noted here that the "depth of the groove 8" and the "thickness of the free end 6" are both in the same direction of measurement, i.e. in the direction of measurement of the distance between the two parallel cutting planes 14.

To facilitate the detachment of the lead screw 11, an enlarged head 13 may be provided at the top end of the lead screw 11, as shown in fig. 3; the tip end surface of the lead screw 11 may be provided with a tool tightening groove 12, as shown in fig. 4.

Through a large amount of experiments discovery, adopt the above-mentioned scheme of this application, than the current scheme of fixing through bolt and nut, fixed stability promotes greatly.

The foregoing is merely one embodiment of the present application and other embodiments may be devised by adding, deleting, modifying or replacing certain features. For example, the diameter of the portion of the lead screw 11 that is placed in the groove may be smaller than the diameter of the portion of the lead screw 11 that is outside the groove, as shown in fig. 6. The depth of the recess is one half of the thickness of the free end 6. The portion of the lead screw 11, which is placed in the groove, has a cylindrical shape, as shown in fig. 6. Obviously, the receiving space of the groove is also cylindrical. The portion of the lead screw 11 outside the groove is also cylindrical, as shown in fig. 6. The shoulder is formed at the junction of the portion of the lead screw 11 that is disposed in the groove and the portion of the lead screw 11 that is disposed outside the groove, as shown in fig. 6.

For another example, the rotating shaft may be provided with a receiving hole as described in the above embodiments, and the transmission member may be provided with a free end adapted to be fixed in the receiving hole.

The elements of the different embodiments may be combined with each other in any feasible manner to achieve the object of the application.

It should be additionally noted that the present application should not be construed as limited to the above-described embodiments, but rather should be construed to cover all possible embodiments as determined by the claims that follow when taken in conjunction with the disclosure herein. Therefore, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application are within the protection scope of the present application, unless departing from the content of the present application.

Claims

1. A drive assembly for a household appliance, comprising a shaft (5) and a transmission member (7) coupled to each other, the shaft (5) being arranged so as to be suitable for driving the transmission member (7) in rotation, characterized in that:

one of the rotating shaft (5) and the transmission piece (7) is provided with a containing hole, and the other of the rotating shaft and the transmission piece is provided with a free end (6) suitable for being fixed in the containing hole;

the free end (6) is provided with a groove (8);

the hole wall of the accommodating hole is provided with a threaded hole extending towards the groove (8), and a screwed screw rod (11) penetrates through the hole wall until the bottom end face of the screw rod (11) abuts against the bottom wall of the groove (8).

2. The drive assembly of claim 1, wherein:

the free end (6) is arranged in the accommodating hole along the extending direction of the axis of the rotating shaft (5).

3. The drive assembly of claim 2, wherein:

when the free end (6) is fixed in the accommodating hole, the linear motion along the extension direction of the axis of the rotating shaft (5) is the only motion freedom of the free end (6) relative to the accommodating hole.

4. The drive assembly of claim 3, wherein:

the accommodation hole is a flat hole.

5. The drive assembly of claim 4, wherein:

the opening edge of the groove (8) is attached to the flat surface of the flat hole.

6. The drive assembly of claim 1, wherein:

a circle of chamfer surface is arranged on the periphery of the bottom end surface of the screw rod (11);

when the bottom end face of the lead screw (11) abuts against the bottom wall of the groove (8), the circle of chamfer face abuts against the side wall (9) of the groove (8).

7. The drive assembly of claim 1, wherein:

the depth of the groove (8) is not more than half the thickness of the free end (6).

8. The drive assembly of claim 1, wherein:

the diameter of the part of the screw rod (11) placed in the groove (8) is smaller than that of the part of the screw rod (11) located outside the groove (8).

9. The drive assembly of claim 1, wherein:

a tool screwing groove (12) is formed in the top end face of the screw rod (11); or the like, or a combination thereof,

the top end of the screw rod (11) is provided with an expansion head (13).

10. The drive assembly of claim 1, wherein:

the free end (6) fills the receiving opening.

11. The drive assembly according to any one of claims 1 to 10, wherein:

comprises a motor (10) for driving the rotating shaft (5) to rotate.

12. A range hood, its characterized in that:

comprises an air inlet (3), a movable panel (4) for controlling the opening and the closing of the air inlet (3) and a driving assembly according to any one of claims 1 to 11;

the transmission piece (7) of the driving component is used for driving the movable panel (4) to move.