CN218499478U

CN218499478U - Heat radiation structure and gardens electric tool

Info

Publication number: CN218499478U
Application number: CN202222040738.3U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Kewei Technology Nantong Co ltd
Current assignee: Kewei Technology Nantong Co ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2023-02-17
Anticipated expiration: 2032-08-04

Abstract

The utility model relates to a heat radiation structure and have this heat radiation structure's gardens electric tool. The heat dissipation structure comprises a shell, a driver arranged in the shell, and an air guide ring sleeved on the driver. The shell has air intake and air outlet, the driver includes the fan blade, the air intake and the driver intercommunication of shell form the air inlet wind channel, the axial extension of driver is followed in the air inlet wind channel, the wind-guiding circle forms the air-out wind channel with the shell, the air-out wind channel extends and communicates with air outlet and driver along the outer fringe of driver, isolated air inlet wind channel and air-out wind channel of wind-guiding circle, the improvement is to the driver cooling, radiating effect, thereby increase the life of product.

Description

Heat radiation structure and gardens electric tool

Technical Field

The utility model relates to a gardens electric tool field especially relates to gardens electric tool's heat radiation structure to and have this heat radiation structure's gardens electric tool.

Background

The existing garden electric tool is provided with a driver for providing power to enable a working head to work, and the driver generally adopts a motor. However, the motor in the garden electric tool, especially the brush motor, basically has no air duct design, so the heat dissipation effect of the motor is not good. It is higher to have the brush motor to generate heat, and in addition gardens electric tool needs the work of high strength high load, does not have the wind channel design and hardly reduces motor temperature effectively, influences gardens electric tool's life. Therefore, it is necessary to design the air duct structure for the driver of the garden electric tool to improve the heat dissipation effect and prolong the service life.

SUMMERY OF THE UTILITY MODEL

A heat dissipation structure comprises a shell, a driver and an air guide ring, wherein the driver is installed in the shell, the air guide ring is sleeved on the driver, the shell is provided with an air inlet and an air outlet, the driver comprises fan blades, the air inlet of the shell is communicated with the driver to form an air inlet channel, the air inlet channel extends along the axial direction of the driver, the air guide ring and the shell form an air outlet channel, the air outlet channel extends along the outer edge of the driver and is communicated with the air outlet and the driver, and the air guide ring is isolated from the air inlet channel and the air outlet channel.

Furthermore, the air guide ring is sleeved outside the driver and positioned in the shell, the air guide ring comprises two coaxially arranged circular rings and a plurality of connecting arms, the circular rings are sleeved on the periphery of the driver, each connecting arm is axially connected with the inner peripheral walls of the two circular rings, the two circular rings and the shell form an annular channel, and the annular channel forms the air outlet duct.

Further, the housing includes an end wall perpendicular to an axis of the driver, and a peripheral wall surrounding the driver, an air inlet of the housing is located at the end wall, so that the air inlet duct supplies air in an axial direction of the driver, and an air outlet of the housing is disposed at the peripheral wall, so that air in the driver is discharged from the air outlet via the air outlet duct.

Furthermore, the wind guide ring also comprises a baffle plate, and the baffle plate is connected with the two circular rings, cuts off the annular channel and plays a role in guiding gas entering the wind outlet channel.

Further, the driver is provided with an opening, the opening is used for discharging gas in the driver, and the opening corresponds to the space between the two circular rings, so that the gas directly enters the air outlet duct after being discharged from the driver.

Further, the wind guide ring further comprises an installation buckle, and the installation buckle is arranged at the end part of the driver in a buckled mode.

Further, the utility model discloses still relate to a gardens electric tool, include as above heat radiation structure.

Further, the air-out device also comprises a handle, the air in the driver is discharged from the air outlet of the shell through the air-out duct, and the air-out direction of the air deviates from the handle.

Further, the garden power tool is a chain saw.

Further, the driver includes a brush motor.

Has the beneficial effects that:

1. the wind guide ring isolates the air inlet gas and the air outlet gas, so that the air inlet gas and the air outlet gas are shunted, the cooling and heat dissipation effects of the driver can be improved, and the service life of a product is prolonged.

2. The baffle of wind-guiding circle plays the guide effect to the gas that gets into the air-out wind channel, and the design of wind-guiding circle accords with hydrodynamics, and gaseous operation round back is discharged from the air outlet, and gaseous air-out direction deviates from the handle for handle department can not receive the hot-blast that blows off, and user experience is better.

3. The wind-guiding circle is installed to the driver and can also play the effect of supplementary fixed motor, is in high strength work at gardens electric tool, effectively reduces the not hard up risk of motor.

Drawings

Fig. 1a is a schematic view of an air guiding cover according to an embodiment of the present invention.

Fig. 1b is a side view of the wind scooper according to the embodiment of the present invention.

Fig. 2 is a schematic view of a chain saw according to an embodiment of the present invention.

Fig. 3 is a schematic view of the chain saw without a housing according to an embodiment of the present invention.

Fig. 4 is a schematic view of a chainsaw with an alternative view of the housing omitted in an embodiment of the present invention.

Fig. 5 is a schematic view of a first vent in a chain saw according to an embodiment of the present invention.

Fig. 6 is a schematic view of a second vent of a chain saw according to an embodiment of the present invention.

Fig. 7 is a sectional view of a chain saw in an embodiment of the invention.

Description of the drawings: chainsaw-100;

a shell body-1; -a housing-10; an end wall-11; a first air inlet-111; a second air inlet-112; -a peripheral wall-12; a first air outlet-121; second air outlet-122

A driver-2; opening-21;

a wind guide ring-3; rings-31, 32; a connecting arm-33; a baffle-34; installing a buckle-35;

a first air intake direction-411; a second air intake direction-412; a first air outlet direction-421; a second air outlet direction is-422; a third air outlet direction-423;

a handle-5.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the exemplary embodiments below do not represent all embodiments consistent with the present application.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. As used in this application, the terms "first," "second," and the like, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front," "back," "lower," and/or "upper," and the like are for convenience of description, and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Referring to fig. 1a to 7, a garden electric tool, in this embodiment, a chain saw 100, is disclosed. As shown in fig. 2, the chainsaw 100 includes a guide plate, a housing 1, a chain mounted on the guide plate, a driver 2 and a transmission mechanism mounted in the housing 1, and a battery pack. The battery pack is used for providing power for the driver 2, and the driver 2 transmits power to the chain through the transmission mechanism to drive the chain to rotate so as to realize the work of the chain saw 100. Typically, the housing 1 also forms a handle 5. In order to maintain balance, a battery pack and a guide plate are respectively provided at both ends of the handle 5. The housing 1 comprises two half-shells, one of which forms a housing 10 for protecting the drive 2, the housing 10 having an air inlet and an air outlet. The driver 2 comprises a motor and a fan blade. When the driver 2 works, the fan blades rotate to generate negative pressure, so that outside air enters from the air inlet of the shell 10 to cool the motor and then is discharged from the air outlet of the shell 10. The shell 10 is also provided with an air guide ring 3, and the air guide ring 3 is sleeved outside the driver 2. The driver 2, the air guide ring 3 outside the driver 2 and the shell 10 covering the driver 2 form a heat dissipation structure.

The air inlet of the shell 10 is communicated with the driver 2 to form an air inlet duct, and the air inlet duct extends along the axial direction of the driver 2. The wind guide ring 3 and the shell 10 form a wind outlet duct, and the wind outlet duct extends along the outer edge of the driver 2 and is communicated with the wind outlet and the driver 2. The air guide ring 3 isolates the air inlet duct from the air outlet duct.

The air guide ring 3 in the heat dissipation structure can divide air inlet gas and air outlet gas of the cooling motor, so that the cooling effect of the driver 2 is improved, the motor is prevented from being overheated, and the service life of the motor is prolonged.

Specifically, as shown in fig. 1a and 1b, the wind guiding ring 3 includes two coaxially disposed

circular rings

31 and 32 and a plurality of connecting arms 33. The circular rings 31 and 32 are sleeved on the periphery of the driver 2, and each connecting arm 33 is axially connected with the inner peripheral walls 12 of the two

circular rings

31 and 32, so that a gap is formed between every two adjacent connecting arms 33, and the air guide ring 3 can be communicated with the driver 2. The housing 10 is covered outside the air guiding ring 3, so that the two

rings

31, 32 of the air guiding ring 3 are in contact with the housing 10 or have only a very small gap for convenient assembly. The two rings 31, 32 and the housing 10 form an annular channel, which forms the air outlet duct at the outer edge of the driver 2.

As shown in fig. 2, the housing 10 includes an end wall 11 perpendicular to the axis of the driver 2, and a peripheral wall 12 surrounding the driver 2, and a first air inlet 111 is provided on the end wall 11 of the housing 10, so that the external air enters from the first air inlet 111 and is blown along the air inlet duct toward the axial direction of the driver 2, and a first air inlet direction 411 of the air is shown in fig. 2.

Preferably, a second air inlet 112 is further provided on the housing 1 of the chain saw 100, and the second air inlet 112 is located at the other end of the driver 2 opposite to the first air inlet 111. The outside air enters from the second air inlet 112 and also enters along the second air inlet direction 412 along the axial direction of the driver 2, so that on one hand, the air inlet amount can be increased, and on the other hand, air is simultaneously introduced from the two ends of the driver 2 to improve the cooling effect.

The peripheral wall 12 of the housing 10 is provided with the air outlet, so that the air in the driver 2 is discharged from the air outlet through the air outlet duct.

Because in the axial direction perpendicular to driver 2, as shown in fig. 3 and fig. 7, rings 31, 32 of wind guide ring 3 and shell 10 prevent the air of the inlet air from entering the air outlet duct, so that wind guide ring 3 isolates the air of the inlet air and the air of the outlet air, the air of the inlet air and the air of the outlet air are shunted, and the air of the inlet air and the air of the outlet air do not interfere with each other, so that the cooling and heat dissipation effects of the motor can be improved, and the service life of the motor is prolonged.

Specifically, as shown in fig. 7, the driver 2 has an opening 21 around its circumference, and the opening 21 is used for discharging the gas for cooling the motor in the driver 2. The opening 21 corresponds to the space between the two

circular rings

31 and 32, so that the air is discharged from the driver 2, directly enters the air outlet duct, and is discharged from the air outlet of the housing 10 along the air outlet duct of the annular channel.

Preferably, as shown in fig. 5, the first air outlet 121 is disposed below the housing 10, and the first air outlet 121 enables air to flow circularly along the outer edge of the driver 2 and then to be discharged from the first air outlet 121 below, so as to meet fluid mechanics, and finally to be discharged in a direction away from the handle 5, so that the handle 5 is not subjected to blown hot air, the blown hot air is prevented from generating bad feeling to a user toward the handle 5, and the user experience is better.

Preferably, the air guide ring 3 further includes a baffle 34, and the baffle 34 connects the two

circular rings

31 and 32, and cuts off an annular passage formed by the two

circular rings

31 and 32, so as to guide air entering the air outlet duct. According to fig. 3, the air entering the air outlet duct from both sides of the baffle 34 is divided into two paths of air outlet, the first air outlet direction 421 runs along the counterclockwise direction, the second air outlet direction 422 runs along the clockwise direction, and finally the two paths of air outlet converge to the first air outlet 121 for discharge.

As shown in fig. 6, a second outlet 122 is further provided above the housing 10, and the air discharged from the actuator 2 is discharged from the second outlet 122 through the air guide ring 3 to form a third outlet direction 423. In the present embodiment, the area of the first outlet 121 is larger than that of the second outlet 122, so that the second outlet 122 is used for exhausting a small amount of air, and the air exhausted from the second outlet does not make the user feel heat. The second air outlet 122 is in the shape of a multi-window grid, the first air outlet 121 is in the shape of a long strip, and the area of the second air outlet 122 is further reduced by the grid-shaped second air outlet 122, so that the chips of the chain saw 100 are prevented from flying into the driver 2 from the second air outlet 122 during cutting.

The wind-guiding ring 3 further includes a mounting buckle 35, and as shown in fig. 1a and fig. 3, the wind-guiding ring 3 is mounted on the end of the driver 2 through the mounting buckle 35. The wind guide ring 3 is mounted on the driver 2 and can also play a role in assisting in fixing the motor, and the risk of loosening the motor is effectively reduced when the chain saw 100 works at high strength.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.

Claims

1. A heat dissipation structure is characterized by comprising a shell, a driver and an air guide ring, wherein the driver is installed in the shell, the air guide ring is sleeved on the driver, the shell is provided with an air inlet and an air outlet, the driver comprises fan blades, the air inlet of the shell is communicated with the driver to form an air inlet channel, the air inlet channel extends along the axial direction of the driver, the air guide ring and the shell form an air outlet channel, the air outlet channel extends along the outer edge of the driver and is communicated with the air outlet and the driver, and the air guide ring is isolated from the air inlet channel and the air outlet channel.

2. The heat dissipation structure of claim 1, wherein the air guiding ring is sleeved outside the driver and inside the housing, the air guiding ring includes two coaxially disposed rings and a plurality of connecting arms, the rings are sleeved outside the driver, each connecting arm axially connects inner peripheral walls of the two rings, an annular channel is formed by the two rings and the housing, and the annular channel forms the air outlet channel.

3. The heat dissipation structure of claim 2, wherein the housing includes an end wall perpendicular to an axis of the actuator, and a peripheral wall surrounding the actuator, the air inlet of the housing is located at the end wall so that the air inlet duct blows air in an axial direction of the actuator, and the air outlet of the housing is provided at the peripheral wall so that air inside the actuator is discharged from the air outlet via the air outlet duct.

4. The heat dissipation structure of claim 3, wherein the air guide ring further comprises a baffle plate, and the baffle plate is connected with the two circular rings, separates the annular channel, and guides air entering the air outlet duct.

5. The heat dissipation structure of claim 4, wherein the driver has an opening for exhausting the gas inside the driver, and the opening corresponds to between the two circular rings, so that the gas directly enters the air outlet duct after being exhausted from the driver.

6. The heat dissipating structure of claim 1, wherein the wind-guiding ring further comprises a mounting clip, and the mounting clip is disposed at an end of the driver.

7. A garden power tool, characterized by comprising the heat dissipation structure according to any one of claims 1 to 6.

8. The garden power tool of claim 7, further comprising a handle, wherein air from within the drive is exhausted from the air outlet of the housing through the air outlet duct, and the air outlet direction of the air is away from the handle.

9. The garden power tool of claim 8, wherein the garden power tool is a chainsaw.

10. The garden power tool of claim 8, wherein the driver comprises a brush motor.