Fan motor fixing structure and electric fan thereof

Abstract

The utility model relates to a fan motor fixing structure which comprises a connecting piece connected with a fan cover body in a matched mode, a shell used for wrapping a direct current motor is arranged on the connecting piece, and the connecting piece and the shell are of an integrally-formed structure or of a split-type formed structure. The connecting piece and the shell are arranged into a whole, the assembling mode of a front cover and a rear cover is omitted, meanwhile, an alternating current motor is replaced by the direct current motor, the working voltage of the direct current motor is 20 V, the direct current motor is more energy-saving and safer than the alternating current motor, electric shock safety accidents are not likely to happen, the rotating speed of the direct current motor is higher than that of the alternating current motor, and the air volume generated by the electric fan is large. The direct current motor is small in size, saves installation space, reduces transportation cost, is installed on the shell in a limiting mode, is convenient and fast to install, and is low in failure rate and low in noise during working when a user normally uses the direct current motor.

Description

Technical Field

[0001] The utility model relates to the technical field of fan motor fixing and installation, in particular to a fan motor fixing structure and an electric fan thereof. Background Art

[0002] Traditional fan motors use AC motors, which are noisy when working, and the AC motors are large in size, resulting in high transportation costs. The AC motor is fixed and installed by covering the front cover and the rear cover. For example, the electric fan shaking mechanism disclosed in Chinese Patent No. ZL201120283639.7, the front cover and the rear cover need to be assembled, and the front cover and the rear cover are usually snap-fitted, and there is no positioning connection structure between the front cover and the rear cover, resulting in low assembly efficiency; in addition, the rotating shaft for shaking the head is separated from the front cover and is generally fixed at the bottom of the motor. For example, a shaking fan motor structure disclosed in Chinese Patent No. ZL202011509063.1, see paragraph 23 of its specification, the column serves as the connecting shaft between the fan head and the fan seat, the fan head swings around the column, and a reinforcing iron is provided at the bottom of the shell, and the top of the column extends into the shell to connect with the reinforcing iron. The shell is made of plastic and is injection molded. Before injection molding, the reinforcing iron and the column are placed in the corresponding position of the injection mold. After the shell is formed, the reinforcing iron and the upper end of the column are covered in the bottom of the shell. The connection strength is high, ensuring the connection stability between the column and the shell. Although it does not require manual assembly of the column and the motor shell, the reinforcing iron and the column still need to be separately manufactured during the production process, and the production cycle is relatively long.

[0003] In addition, its anti-slip structure requires an annular groove to be provided on the rotating shaft, and a screw is provided on the annular groove, and the end of the screw is inserted into the annular groove. When the rotating shaft rotates, the annular groove rotates relative to the end of the screw to prevent the rotating shaft from detaching up and down.

[0004] Therefore, further improvement is needed. Utility Model Content

[0005] The utility model aims to provide a fan motor fixing structure and an electric fan thereof, by setting a connecting piece and a shell as a whole, canceling the assembly form of a front cover and a rear cover, and replacing an AC motor with a DC motor. The working voltage of the DC motor is 20V, which is more energy-saving and safer than an AC motor, and is not prone to electric shock safety accidents. The speed of the DC motor is 1400r / min, which is faster than that of the AC motor. The electric fan generates a large amount of air, and the DC motor is small in size, saving installation space and reducing transportation costs. The DC motor is limitedly installed on the shell, which is easy and quick to install. If the user is in normal use, the failure rate of the DC motor is low and the noise is small during operation.

[0006] The purpose of the utility model is achieved in this way:

[0007] A fan motor fixing structure includes a connector that is connected to a fan cover body, a shell for covering a DC motor is provided on the connector, and the connector and the shell are an integrated molding structure, or a split molding structure is provided between the connector and the shell. By setting the connector and the shell as a whole, the assembly form of the front cover and the rear cover is cancelled, and the AC motor is replaced by a DC motor. The working voltage of the DC motor is 20V, which is more energy-saving and safer than the AC motor, and is not prone to electric shock safety accidents. The speed of the DC motor is faster than that of the AC motor, and the air volume generated by the electric fan is large. The DC motor is small in size, saving installation space and reducing transportation costs. The DC motor is limitedly installed on the shell, which is convenient and quick to install. If the user uses it normally, the failure rate of the DC motor is low, and the noise is small during operation.

[0008] A housing cavity for accommodating and installing a DC motor is provided in the shell, and a limiting rib acting on the DC motor is provided on the housing cavity. The DC motor is installed on the housing cavity by limiting the limiting rib, and the DC motor is installed on the shell by limiting the limiting rib, so the installation is convenient and quick.

[0009] A plurality of limiting ribs are provided, and the plurality of limiting ribs are circumferentially spaced apart on the accommodating cavity. The DC motor is installed on the accommodating cavity in an up-and-down and / or left-and-right limited manner through the plurality of limiting ribs circumferentially spaced apart, so as to prevent the DC motor from moving up-and-down and left-and-right on the accommodating cavity of the shell during operation, and to prevent noise generated by the movement of the DC motor.

[0010] A shaking head transmission mechanism is provided at one end of the DC motor, and the DC motor is connected to the shaking head transmission mechanism. The shaking head transmission mechanism includes a cover plate detachably installed on the shell, the cover plate is installed on the shell and together with the shell covers the DC motor, the DC motor is installed in the shell with front and rear limit through the cover plate to prevent the DC motor from escaping from the shell, and space for threading is left between the cover plate and the shell.

[0011] The connecting piece is rotatably arranged on the pitch mechanism, and the pitch mechanism includes a movable seat. The connecting piece is provided with a connecting shaft rotatably connected to the movable seat. When the shaking transmission mechanism drives the connecting piece and the shell to drive the fan cover to shake its head under the action of the DC motor, the connecting shaft of the connecting piece forms a rotating fulcrum of the fan cover, and an anti-detachment connecting piece is provided between the connecting shaft and the movable seat to prevent the connecting shaft from detaching from the movable seat. The anti-detachment connecting piece penetrates the movable seat and the connecting shaft from bottom to top toward the bottom of the movable seat, thereby eliminating the structure in which the connecting shaft is arranged on the bottom of the motor, and the anti-detachment structure does not require processing an annular groove on the connecting shaft, so the processing is simple and the installation is quick.

[0012] The connecting piece is integrally provided with a connecting shaft extending along the lower side of the connecting piece; a positioning connecting portion is provided between the cover plate and the shell, and the cover plate and the shell are positioned and fixedly connected through the positioning connecting portion.

[0013] The connecting piece and the connecting shaft are arranged as a whole, and there is no need to produce the connecting shaft separately, which shortens the production cycle and is conducive to improving the production capacity of the enterprise.

[0014] A transmission connecting rod is arranged between the movable seat and the shaking head transmission mechanism, one end of the transmission connecting rod is rotatably arranged on the movable seat, and the other end of the transmission connecting rod is connected with the output shaft of the shaking head transmission mechanism.

[0015] The pitch mechanism also includes a fuselage, which is provided with an electrical cavity for installing and accommodating a control circuit board. The movable seat is arranged on the fuselage for vertical rotation. The control circuit board is provided with a transformer acting on a DC motor. The DC motor and the transformer are electrically connected to the control circuit board through wires.

[0016] A wiring channel for inserting wires is provided between the movable seat and the electrical cavity of the fuselage.

[0017] An electric fan comprises the above-mentioned fan motor fixing structure.

[0018] The beneficial effects of the utility model are as follows:

[0019] By setting the connector and the shell as a whole, the front cover and the rear cover assembly are cancelled, and the AC motor is replaced by a DC motor. The working voltage of the DC motor is 20V, which is more energy-saving and safer than the AC motor, and is not prone to electric shock safety accidents. The speed of the DC motor is 1400r / min, which is faster than the AC motor. The electric fan generates a large amount of air, and the DC motor is small in size, saving installation space and reducing transportation costs. The DC motor limiter is installed on the shell, which is easy and quick to install. If the user uses it normally, the failure rate of the DC motor is low and the noise is small when working. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a connecting piece according to an embodiment of the utility model.

[0021] Figure 2 This is a structural schematic diagram of a DC motor limitedly installed on a housing of a connector according to an embodiment of the utility model.

[0022] Figure 3 It is a schematic cross-sectional structure diagram of a connecting member and a movable seat being rotatably connected in one embodiment of the utility model.

[0023] Figure 4 for Figure 3 A partial enlarged view.

[0024] Figure 5 The figure is a three-dimensional structural diagram of an electric fan according to an embodiment of the utility model.

[0025] Figure 6 for Figure 5 A partial enlarged view.

[0026] Figure 7 The utility model is a schematic diagram of the exploded structure of the electric fan body assembly according to one embodiment of the present invention. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0028] See also Figure 1-Figure 7 A fan motor fixing structure includes a connector 2 connected to a fan cover 1, a shell 4 for covering a DC motor 3 is provided on the connector 2, and the connector 2 and the shell 4 are an integral molding structure, or a split molding structure is formed between the connector 2 and the shell 4.

[0029] The housing 4 is provided with a receiving cavity 5 for receiving and installing the DC motor 3 . The receiving cavity 5 is provided with a limiting rib 6 acting on the DC motor 3 . The DC motor 3 is installed on the receiving cavity 5 by limiting the position of the limiting rib 6 .

[0030] There are a plurality of limiting ribs 6 , which are circumferentially spaced apart on the accommodating cavity 5 . The DC motor 3 is mounted on the accommodating cavity 5 in an up-down and / or left-right limiting manner through the plurality of circumferentially spaced apart limiting ribs 6 .

[0031] In this embodiment, the connecting member 2 is provided with heat dissipation holes.

[0032] An oscillating head transmission mechanism 8 is provided at one end of the DC motor 3, and the DC motor 3 is connected to the oscillating head transmission mechanism 8 in transmission. The oscillating head transmission mechanism 8 includes a cover plate 9 detachably mounted on the shell 4, the cover plate 9 is mounted on the shell 4 and together with the shell 4 covers the DC motor 3, and the DC motor 3 is mounted in the shell 4 with front and rear limit positions through the cover plate 9.

[0033] The connecting member 2 is rotatably arranged on the pitch mechanism 7, and the pitch mechanism 7 includes a movable seat 10. The connecting member 2 is provided with a connecting shaft 11 rotatably connected to the movable seat 10. When the shaking transmission mechanism 8 drives the connecting member 2 and the shell 4 to drive the fan cover 1 to shake its head under the action of the DC motor 3, the connecting shaft 11 of the connecting member 2 forms a rotation fulcrum of the fan cover 1, and an anti-detachment connecting member 12 is provided between the connecting shaft 11 and the movable seat 10 to prevent the connecting shaft 11 from detaching from the movable seat 10. The anti-detachment connecting member 12 penetrates the movable seat 10 and the connecting shaft 11 from bottom to top toward the bottom of the movable seat 10.

[0034] In this embodiment, the anti-drop connection member 12 is a screw, and the head of the screw is limited on the bottom of the movable seat 10 .

[0035] In this embodiment, a gear meshing transmission assembly is provided in the shaking transmission mechanism 8, which is the prior art and common knowledge to those skilled in the art and will not be described in detail here.

[0036] A screw hole for inserting a screw column is provided at the bottom of the movable seat 10, and a threaded cavity for inserting the screw column is provided on the connecting shaft 11.

[0037] The connecting member 2 is integrally provided with a connecting shaft 11 extending along the lower side of the connecting member 2 ; a positioning connecting portion 16 is provided between the cover plate 9 and the housing 4 , and the cover plate 9 and the housing 4 are positioned and fixedly connected via the positioning connecting portion 16 .

[0038] In this embodiment, the connecting member 2, the connecting shaft 11, and the housing 4 are provided as an integral part of a plastic part by injection molding.

[0039] In this embodiment, the positioning connection part 16 includes a positioning connection column arranged on the shell 4 and a positioning connection hole arranged on the cover plate 9. The positioning connection hole is aligned with the positioning connection column, and the cover plate 9 is fixed to the outer end of the shell 4 by inserting screws.

[0040] A transmission connecting rod 13 is provided between the movable seat 10 and the oscillating transmission mechanism 8 . One end of the transmission connecting rod 13 is rotatably arranged on the movable seat 10 , and the other end of the transmission connecting rod 13 is connected to the output shaft of the oscillating transmission mechanism 8 .

[0041] The pitch mechanism 7 also includes a fuselage 14, which is provided with an electrical cavity for installing and accommodating a control circuit board 15. The movable seat 10 is arranged on the fuselage 14 to rotate up and down. The control circuit board 15 is provided with a transformer acting on the DC motor 3. The DC motor 3 and the transformer are electrically connected to the control circuit board 15 through wires.

[0042] The transformer converts direct current into alternating current, which is a technical means that can be easily implemented by technicians in the relevant field (its circuit structure belongs to the existing technology), and the relevant circuit layout structure will not be described in detail here.

[0043] In this embodiment, the movable seat 10 is rotatably disposed on the body 14 via a transversely interlaced rotation axis, and the body 14 supports the movable seat 10 and components connected to the movable seat 10 .

[0044] A wiring channel for inserting wires is provided between the movable seat 10 and the electrical cavity of the body 14 .

[0045] An electric fan comprises the above-mentioned fan motor fixing structure.

[0046] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A fan motor fixing structure, comprising a connecting member (2) connected to a fan cover (1), characterized in that: A housing (4) for covering the DC motor (3) is provided on the connecting piece (2), and the connecting piece (2) and the housing (4) are an integrally formed structure, or the connecting piece (2) and the housing (4) are a split-formed structure; A receiving cavity (5) for receiving and installing the DC motor (3) is provided in the housing (4); a limiting rib (6) acting on the DC motor (3) is provided on the receiving cavity (5); the DC motor (3) is installed on the receiving cavity (5) in a limited manner by the limiting rib (6).

2. The fan motor fixing structure according to claim 1, characterized in that: A plurality of limiting ribs (6) are provided, and the plurality of limiting ribs (6) are arranged at intervals in the circumferential direction on the accommodating cavity (5). The DC motor (3) is installed on the accommodating cavity (5) in an up-and-down and / or left-and-right limiting manner via the plurality of limiting ribs (6) arranged at intervals in the circumferential direction.

3. The fan motor fixing structure according to claim 1, characterized in that: An oscillating head transmission mechanism (8) is provided at one end of the DC motor (3), the DC motor (3) being in transmission connection with the oscillating head transmission mechanism (8), the oscillating head transmission mechanism (8) comprising a cover plate (9) detachably mounted on the housing (4), the cover plate (9) being mounted on the housing (4) and covering the DC motor (3) together with the housing (4), the DC motor (3) being mounted in the housing (4) in a front-rear limited manner via the cover plate (9).

4. The fan motor fixing structure according to claim 3, characterized in that: The connecting member (2) is rotatably arranged on the pitch mechanism (7), the pitch mechanism (7) includes a movable seat (10), and the connecting member (2) is provided with a connecting shaft (11) rotatably connected to the movable seat (10). When the shaking transmission mechanism (8) drives the connecting member (2) and the housing (4) under the action of the DC motor (3) to drive the fan cover (1) to shake its head, the connecting shaft (11) of the connecting member (2) forms a rotation fulcrum of the fan cover (1), and an anti-detachment connecting member (12) for preventing the connecting shaft (11) from detaching from the movable seat (10) is provided between the connecting shaft (11) and the movable seat (10), and the anti-detachment connecting member (12) penetrates the movable seat (10) and the connecting shaft (11) from bottom to top toward the bottom of the movable seat (10).

5. The fan motor fixing structure according to claim 4, characterized in that: The connecting member (2) is integrally provided with a connecting shaft (11) extending along the bottom of the connecting member (2); a positioning connecting portion (16) is provided between the cover plate (9) and the shell (4), and the cover plate (9) and the shell (4) are positioned and fixedly connected via the positioning connecting portion (16).

6. The fan motor fixing structure according to claim 4, characterized in that: A transmission connecting rod (13) is provided between the movable seat (10) and the oscillating transmission mechanism (8); one end of the transmission connecting rod (13) is rotatably arranged on the movable seat (10), and the other end of the transmission connecting rod (13) is connected to the output shaft of the oscillating transmission mechanism (8).

7. The fan motor fixing structure according to claim 4, characterized in that: The pitch mechanism (7) further comprises a fuselage (14), the fuselage (14) being provided with an electrical cavity for mounting and accommodating a control circuit board (15), the movable seat (10) being arranged on the fuselage (14) so ​​as to rotate up and down, the control circuit board (15) being provided with a transformer acting on the DC motor (3), the DC motor (3) and the transformer being electrically connected to the control circuit board (15) via wires.

8. The fan motor fixing structure according to claim 7, characterized in that: A wiring channel for inserting wires is provided between the movable seat (10) and the electrical cavity of the body (14).

9. An electric fan, characterized in that: It comprises the fan motor fixing structure as described in any one of claims 1-8.

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