CN207754118U - A kind of heat dissipation wind channel structure of power head - Google Patents

Abstract

The utility model provides a kind of heat dissipation wind channel structure of power head, including：Shell, fan blade and wind loop, the shell includes motor cavity and battery cavities, the fan blade is arranged with the wind loop in the motor cavity, and has the first gap between the fan blade and the roof of the motor cavity, has the second gap between the wind loop and the inner wall of the motor cavity.The beneficial effects of the utility model are：With interstitial structure, reliable result of ventilating heat dissipation can be realized, and dust is avoided to enter in shell.

Description

A kind of heat dissipation wind channel structure of power head

Technical field

The utility model belongs to technical field of garden, is related to a kind of heat dissipation wind channel structure of power head.

Background technology

Power head is applied on grass trimmer or similar tool, for driving the cutter of mowing motor spindle to rotate, from And realize the purpose that power is provided.

Such as it is a kind of application No. is 201610418160.7 Chinese patent, it discloses a kind of power head, including casing, Driving head on casing and at least one air inlet being opened on casing, the casing internal offer at least one A ventilation notch, the ventilation notch form heat dissipation wind channel with air inlet, and after the air inlet enters air-flow, air-flow flows into Air-flow is blown out into casing to ventilation notch, then by driving head.

But in this power head, lack interstitial structure, reliable result of ventilating heat dissipation is cannot achieve, and actually make With, being easy to accumulate dust in shell in the process, so having certain room for improvement.

Utility model content

The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, it is proposed that a kind of radiation air of power head Road structure.

The purpose of this utility model can be realized by following technical proposal：A kind of heat dissipation wind channel structure of power head, packet It includes：Shell, fan blade and wind loop, the shell include motor cavity and battery cavities, and the fan blade is arranged with the wind loop In the motor cavity, and between the fan blade and the roof of the motor cavity have the first gap, the wind loop with it is described There is the second gap between the inner wall of motor cavity.

Preferably, being provided with motor in the motor cavity.

Preferably, the fan blade is arranged in the shaft upper end of the motor, and the motor drives the wind at work Leaf rotates.

Preferably, the wind loop is set on the motor, and the cross section of the wind loop is slope diagonally downward Planar structure.

Preferably, first gap is less than 3mm.

Preferably, second gap is less than 3mm.

Preferably, being provided with battery pack in the battery cavities.

Preferably, the motor cavity is connected to the battery cavities.

Compared with prior art, the beneficial effects of the utility model are：

1, there is interstitial structure, can realize reliable result of ventilating heat dissipation, and dust is avoided to enter in shell.

Description of the drawings

Fig. 1 is the heat dissipation wind channel structure schematic diagram of the power head of the utility model.

In figure, 100, shell；110, motor cavity；120, battery cavities；200, fan blade；300, wind loop；400, the first gap； 500, the second gap；600, motor；700, battery pack.

Specific implementation mode

It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.

As shown in Figure 1, a kind of heat dissipation wind channel structure of power head, including：Shell 100, fan blade 200 and wind loop 300, The shell 100 includes motor cavity 110 and battery cavities 120, and the fan blade 200 is arranged with the wind loop 300 in the horse Up in chamber 110, and there is the first gap 400, the wind loop 300 between the fan blade 200 and the roof of the motor cavity 110 There is the second gap 500 between the inner wall of the motor cavity 110.

Shell 100 is exactly the shell of power head, it is worth noting that, shell 100 is with upper and lower two chambers, epicoele herein Battery cavities 120, cavity of resorption are motor cavity 110, are respectively used to installation battery pack 700 and motor 600, due at work, battery Battery pack 700 in chamber 120 can generate heat, so needing to accelerate the heat dissipation in battery cavities 120.

In the present embodiment, accelerate the heat dissipation of battery cavities 120 by motor cavity 110, wherein fan blade 200 is located at horse Up to the top of chamber 110, for generating downward wind-force, in simple terms, the hot gas of battery cavities 120 is exactly attracted to motor cavity In 110, then by being dispersed into the external world.

Wherein the first gap 400 is the gap between the fan blade 200 and roof of motor cavity 110, for being flowed for air, the Two gaps 500 are used to go out for air stream the upper end of motor cavity 110, and prevent dust and other impurities from entering in motor cavity 110；Always For, this interstitial structure being arranged in power head can realize reliable result of ventilating heat dissipation, and dust is avoided to enter To the effect in shell 100.

As shown in Figure 1, on the basis of the above embodiment, motor 600, motor 600 are provided in the motor cavity 110 The cutter of grass trimmer can be driven to rotate.

As shown in Figure 1, on the basis of the above embodiment, the fan blade 200 is arranged in the shaft of the motor 600 End, and the motor 600 drives the fan blade 200 to rotate at work.

In actual structure, motor 600 is also connect with fan blade 200, while driving cutter rotation, additionally it is possible to same When drive fan blade 200 to rotate, to which automatic boosting battery packet 700 radiates at work.

As shown in Figure 1, on the basis of the above embodiment, the wind loop 300 is set on the motor 600, and The cross section of the wind loop 300 is slope planar structure diagonally downward.

It is worth noting that, since interstitial structure is for auxiliary heat dissipation, and fan blade 200 is by the battery cavities on top herein Hot gas in 120 is drawn onto in the motor cavity 110 of lower part, so air-flow moves from top to bottom, and this slope surface shape keeps out the wind Circle 300 is similar to the capping of pot cover, air-flow from top to bottom can be guided by the second gap 500, and prevent under as possible Supreme air-flow is by the second gap 500, simultaneously, additionally it is possible to hot-air be avoided to directly affect motor 600.

As shown in Figure 1, on the basis of the above embodiment, first gap 400 is less than 3mm, this can be in wind Certain wind pressure is formed in road, ensures that wind energy enters air duct, and dust will not enter.

As shown in Figure 1, on the basis of the above embodiment, second gap 500 is less than 3mm, in this way can be in wind Certain wind pressure is formed in road, ensures that wind energy enters air duct, and dust will not enter.

As shown in Figure 1, on the basis of the above embodiment, battery pack 700 is provided in the battery cavities 120；And institute Motor cavity 110 is stated to be connected to the battery cavities 120, it in this way being capable of the heat dissipation of boosting battery packet 700.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims (8)

1. a kind of heat dissipation wind channel structure of power head, which is characterized in that including：Shell, fan blade and wind loop, the shell packet Motor cavity and battery cavities are included, the fan blade is arranged with the wind loop in the motor cavity, and the fan blade and the horse Up to having the first gap between the roof of chamber, there is the second gap between the wind loop and the inner wall of the motor cavity.

2. the heat dissipation wind channel structure of power head as described in claim 1, it is characterised in that：It is provided with horse in the motor cavity It reaches.

3. the heat dissipation wind channel structure of power head as described in claim 2, it is characterised in that：The fan blade is arranged in the horse The shaft upper end reached, and the motor drives the fan blade to rotate at work.

4. the heat dissipation wind channel structure of power head as described in claim 3, it is characterised in that：The wind loop is set in described On motor, and the cross section of the wind loop is slope planar structure diagonally downward.

5. the heat dissipation wind channel structure of power head as described in claim 4, it is characterised in that：First gap is less than 3mm.

6. the heat dissipation wind channel structure of power head as described in claim 5, it is characterised in that：Second gap is less than 3mm.

7. the heat dissipation wind channel structure of power head as described in claim 6, it is characterised in that：It is provided with electricity in the battery cavities Chi Bao.

8. the heat dissipation wind channel structure of power head as described in claim 1, it is characterised in that：The motor cavity and the battery Chamber is connected to.