CN219876936U

CN219876936U - Hedge trimmer

Info

Publication number: CN219876936U
Application number: CN202321286444.7U
Authority: CN
Inventors: 朱琼琼; 范功远
Original assignee: Jiangsu Dongcheng Garden Machinery Co ltd
Current assignee: Jiangsu Dongcheng Garden Machinery Co ltd
Priority date: 2023-05-24
Filing date: 2023-05-24
Publication date: 2023-10-24
Anticipated expiration: 2033-05-24

Abstract

The utility model provides a hedge trimmer, includes the casing and locates motor in the casing, the motor includes the casing, locates stator unit and rotor unit in the casing, be equipped with first air inlet unit and first air outlet unit on the casing, be equipped with second air inlet unit and second air outlet unit on the casing, the casing with be equipped with the cavity between the casing, be equipped with flexible sealing member in the cavity, flexible sealing member will the cavity divide into first sub-cavity and second sub-cavity, first sub-cavity with second sub-cavity is mutually isolated, first air inlet unit with second air inlet unit is located in the first sub-cavity, first air outlet unit with second air outlet unit is located in the second sub-cavity. The utility model can effectively take away the heat in the motor and improve the cooling effect of the motor.

Description

Hedge trimmer

[ technical field ]

The utility model relates to a garden electric tool, in particular to a hedge trimmer.

[ background Art ]

The hedge trimmer can be used as a common garden electric tool for trimming or trimming shrubs and hedges, and has the advantages of convenience in operation, high cutting efficiency and the like.

As disclosed in japanese patent application JP2007075917a, an intake port for sucking cooling air is provided at an upper portion of a housing of the hedge trimmer, an air outlet port for discharging the cooling air is provided at a lower portion of the housing, and the cooling air introduced into the housing from the intake port flows through an outer surface of the motor to take away part of heat generated by the motor to thereby cool the motor. Since the cooling air is in contact with only the outer surface of the motor, the heat inside the motor cannot be effectively released.

In view of the above, it is desirable to provide an improved hedge trimmer that overcomes the shortcomings of the prior art.

[ summary of the utility model ]

In view of the shortcomings of the prior art, the utility model aims to provide a hedge trimmer capable of effectively cooling a motor.

The technical scheme adopted for solving the problems in the prior art is as follows: the utility model provides a hedge trimmer, includes the casing and locates motor in the casing, the motor includes the casing, locates stator unit and rotor unit in the casing, be equipped with first air inlet unit and first air outlet unit on the casing, be equipped with second air inlet unit and second air outlet unit on the casing, the casing with be equipped with the cavity between the casing, be equipped with flexible sealing member in the cavity, flexible sealing member will the cavity divide into first sub-cavity and second sub-cavity, first sub-cavity with second sub-cavity is mutually isolated, first air inlet unit with second air inlet unit is located in the first sub-cavity, first air outlet unit with second air outlet unit is located in the second sub-cavity.

The further improvement scheme is as follows: the flexible sealing member is a rubber sealing ring.

The further improvement scheme is as follows: the rubber sealing ring comprises two arc-shaped rubber strips which are arranged in a mirror image mode.

The further improvement scheme is as follows: the inner surface of the housing is provided with a first recess for receiving a flexible sealing member.

The further improvement scheme is as follows: the first air inlet unit is arranged at the lower part of the shell, and the first air outlet unit is arranged at the upper part of the shell.

The further improvement scheme is as follows: the first air inlet unit comprises two first air inlets which are arranged in a mirror image mode, and the first air outlet unit comprises two first air outlets which are arranged in a mirror image mode.

The further improvement scheme is as follows: the second air inlet unit is arranged at the lower part of the shell, and the second air outlet unit is arranged at the upper part of the shell.

The further improvement scheme is as follows: the second air inlet unit comprises two second air inlets which are arranged in a mirror image mode, and the second air outlet unit comprises two second air outlets which are arranged in a mirror image mode.

The further improvement scheme is as follows: a flexible vibration reduction component is arranged between the shell and the shell.

The further improvement scheme is as follows: the flexible vibration reduction member comprises at least two rubber vibration reduction rings arranged in a mirror image mode, and a second groove used for accommodating the rubber vibration reduction rings is formed in the inner surface of the shell.

Compared with the prior art, the utility model has the following beneficial effects: according to the utility model, the flexible sealing member is arranged in the cavity between the hedge trimmer shell and the motor shell to divide the cavity into the first sub-cavity and the second sub-cavity which are isolated from each other, so that cooling air is guided to flow into the motor from the first sub-cavity and is discharged through the second sub-cavity, and the heat in the motor can be effectively taken away, thereby improving the cooling effect of the motor.

[ description of the drawings ]

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of the entire hedge trimmer of the present utility model;

fig. 2 is an exploded view of the hedge trimmer shown in fig. 1.

Meaning of reference numerals in the drawings:

100. hedge trimmer; 110. a cutter head assembly; 111. an upper shear blade; 112. a lower shear blade; 120. a protective cover; 130. a first handle; 140. a second handle; 150. a power supply mounting portion; 160. a housing; 161. a first air intake unit; 162. a first gas outlet unit; 163. a first groove; 164. a second groove; 200. a motor; 210. a housing; 211. a second air intake unit; 212. a second gas outlet unit; 213. a pin; 300. a cavity; 310. a first subchamber; 320. a second subchamber; 400. a flexible sealing member; 500. a flexible vibration damping member.

Detailed description of the preferred embodiments

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used in the present utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The words such as "upper", "lower", "front", "rear", "left", "right", etc., indicating an azimuth or a positional relationship are merely based on the azimuth or the positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices/elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

Referring to fig. 1, with reference to the front-rear direction defined by the axial direction of the machine body, the hedge trimmer 100 according to the embodiment of the utility model is a gardening cutting tool for outdoor trimming of vegetation such as shrubs and hedges, and the hedge trimmer 100 includes a cutter head assembly 110, a shield 120 for preventing splashes, a front machine body having a first handle 130, and a rear machine body having a second handle 140, which are sequentially connected in the axial direction of the machine body, wherein the cutter head assembly 110 is mounted at the axial front end of the front machine body, the front machine body includes a motor 200 connected to the cutter head assembly 110, the motor 200 is used for driving the cutter head assembly 110 to reciprocate, the rear machine body includes a power supply circuit electrically connected to the motor 200, and a power supply (not shown) connected to the rear machine body, and a power supply mounting portion 150 for mounting the power supply is provided on the rear machine body, and the power supply is mounted on the rear machine body to supply power to the motor 200 through the power supply circuit. The cutter head assembly 110 has an upper cutter blade 111 and a lower cutter blade 112, both of which extend forward from the front body and have blade portions. The motor 200 drives the transmission element to perform eccentric operation through the output shaft, so that the two shearing blades of the cutter head assembly 110 perform relative reciprocating motion, and the cutting function can be realized when the cutter head assembly 110 moves along the vegetation surface.

When the hedge trimmer 100 works, the motor 200 generates heat, and in order to maintain the working stability of the motor 200 and prolong the service life of the motor 200, the motor 200 needs to be cooled.

Referring to fig. 2, the hedge trimmer 100 of the present utility model includes a housing 160 and a motor 200 disposed in the housing 160, wherein the motor 200 includes a casing 210, a stator unit and a rotor unit (not shown) disposed in the casing 210, a first air inlet unit 161 and a first air outlet unit 162 are disposed on the casing 160, a second air inlet unit 211 and a second air outlet unit 212 are disposed on the casing 210, a cavity 300 is disposed between the casing 160 and the casing 210, a flexible sealing member 400 is disposed in the cavity 300, the flexible sealing member 400 divides the cavity 300 into a first sub-cavity 310 and a second sub-cavity 320, the first sub-cavity 310 and the second sub-cavity 320 are isolated from each other, the first air inlet unit 161 and the second air inlet unit 211 are disposed in the first sub-cavity 310, and the first air outlet unit 162 and the second air outlet unit 212 are disposed in the second sub-cavity 320.

According to the utility model, the flexible sealing member 400 is arranged in the cavity 300 between the housing 160 of the hedge trimmer 100 and the housing 210 of the motor 200 to divide the cavity 300 into the first sub-cavity 310 and the second sub-cavity 320 which are isolated from each other, so that cooling air is guided to flow into the motor 200 from the first sub-cavity 310 and is discharged through the second sub-cavity 320, and the heat in the motor 200 can be effectively taken away, thereby improving the cooling effect of the motor 200.

In this embodiment, for easy installation, the flexible sealing member 400 is two arc-shaped rubber strips arranged in mirror image, and the two arc-shaped rubber strips are arranged around the housing 210 and cooperate with each other to form an annular structure surrounding the housing 210. The first groove 163 for accommodating the arc-shaped rubber strip is formed in the inner surface of the housing 160, the first groove 163 is extended and arranged in the front-rear direction, the arc-shaped rubber strip is at least partially located in the first groove 163, the arc-shaped rubber strip can be limited by the arrangement of the first groove 163, the arc-shaped rubber strip is prevented from moving in the up-down direction, and particularly, the arc-shaped rubber strip can be prevented from being shifted due to vibration of the hedge trimmer 100 during operation.

In this embodiment, the arc-shaped rubber strip is located between the housing 160 and the casing 210 and is installed in an interference manner, so that the tightness between the arc-shaped rubber strip and the housing 160 and the casing 210 can be ensured.

The flexible sealing member 400 of the present utility model is not limited to the present embodiment. In other embodiments, the flexible seal may also be a rubber seal ring disposed around the housing 210 or other rubber structure disposed around the housing 210.

With continued reference to fig. 2, in the present embodiment, the first air inlet unit 161 is disposed at the lower portion of the housing 160, and the first air outlet unit 162 is disposed at the upper portion of the housing 160. The first air inlet unit 161 includes two first air inlets arranged in a mirror image, and the first air outlet unit 162 includes two first air outlets arranged in a mirror image. Specifically, the two first air inlets are disposed at the lower portion of the housing 160 and are disposed at the left and right sides of the housing 160, and the two first air outlets are disposed at the upper portion of the housing 160 and are disposed at the left and right sides of the housing 160. Further, two first air inlets are provided at a lower rear position of the housing 160.

Note that the number of the first air inlets and the first air outlets is not limited to two in the present embodiment. In other embodiments, the number of first air inlets and first air outlets may also be one or more.

In the present embodiment, the second air inlet unit 211 is disposed at the lower portion of the housing 210, and the second air outlet unit 212 is disposed at the upper portion of the housing 210. The second air inlet unit 211 includes two second air inlets disposed in a mirror image, and the second air outlet unit 212 includes two second air outlets disposed in a mirror image. Specifically, the two second air inlets are disposed at the lower portion of the casing 210 and are disposed at the left and right sides of the casing 210, and the two second air outlets are disposed at the upper portion of the casing 210 and are disposed at the left and right sides of the casing 210.

It should be noted that the number of the second air inlets and the second air outlets is not limited to two in the present embodiment. In other embodiments, the number of second air inlets and second air outlets may also be one or more.

In this embodiment, to shorten the path of the cooling air, the second air inlet is provided near the first air inlet, and the second air outlet is provided near the first air outlet.

It should be noted that, the relative positions of the first air inlet and the second air inlet, and the relative positions of the first air outlet and the second air outlet are not limited to the embodiment. In other embodiments, the first air inlet and the second air inlet may be staggered, and the first air outlet and the second air outlet may be staggered.

To further reduce the vibration transmitted by the motor 200 to the housing 160, the hedge trimmer 100 of the present utility model may further be provided with a flexible vibration damping member 500 between the housing 160 and the casing 210.

In this embodiment, the flexible damping member 500 includes at least two rubber damping rings disposed in mirror image, and the inner surface of the housing 160 is provided with a second groove 164 for receiving the rubber damping rings. Further, a pin 213 extending toward the second groove 164 is provided on the housing 210, and a rubber damper is sleeved on the pin 213 and located in the second groove 164. Specifically, four rubber vibration damping rings are provided between the housing 160 and the casing 210, that is, two rubber vibration damping rings are provided on each of the left and right sides of the casing 210.

The present utility model is not limited to the above-described embodiments. Those skilled in the art will readily appreciate that many alternatives exist for the hedge trimmer of the present utility model without departing from the spirit and scope of the present utility model. The protection scope of the present utility model is subject to the claims.

Claims

1. The utility model provides a hedge trimmer, includes the casing and locates motor in the casing, the motor includes the casing, locates stator unit and rotor unit in the casing, be equipped with first air inlet unit and first air outlet unit on the casing, be equipped with second air inlet unit and second air outlet unit on the casing, the casing with be equipped with the cavity between the casing, its characterized in that: the cavity is internally provided with a flexible sealing member, the cavity is divided into a first subcavity and a second subcavity by the flexible sealing member, the first subcavity is isolated from the second subcavity, the first air inlet unit and the second air inlet unit are arranged in the first subcavity, and the first air outlet unit and the second air outlet unit are arranged in the second subcavity.

2. Hedge trimmer according to claim 1, characterized in that: the flexible sealing member is a rubber sealing ring.

3. Hedge trimmer according to claim 2, characterized in that: the rubber sealing ring comprises two arc-shaped rubber strips which are arranged in a mirror image mode.

4. Hedge trimmer according to claim 1, characterized in that: the inner surface of the housing is provided with a first recess for receiving a flexible sealing member.

5. Hedge trimmer according to claim 1, characterized in that: the first air inlet unit is arranged at the lower part of the shell, and the first air outlet unit is arranged at the upper part of the shell.

6. Hedge trimmer according to claim 1 or 5, wherein: the first air inlet unit comprises two first air inlets which are arranged in a mirror image mode, and the first air outlet unit comprises two first air outlets which are arranged in a mirror image mode.

7. Hedge trimmer according to claim 1, characterized in that: the second air inlet unit is arranged at the lower part of the shell, and the second air outlet unit is arranged at the upper part of the shell.

8. Hedge trimmer according to claim 1 or 7, wherein: the second air inlet unit comprises two second air inlets which are arranged in a mirror image mode, and the second air outlet unit comprises two second air outlets which are arranged in a mirror image mode.

9. Hedge trimmer according to claim 1, characterized in that: a flexible vibration reduction component is arranged between the shell and the shell.

10. Hedge trimmer according to claim 9, wherein: the flexible vibration reduction member comprises at least two rubber vibration reduction rings arranged in a mirror image mode, and a second groove used for accommodating the rubber vibration reduction rings is formed in the inner surface of the shell.