CN112840883B

CN112840883B - Hedge trimmer

Info

Publication number: CN112840883B
Application number: CN202110158754.XA
Authority: CN
Inventors: 郭栋梁
Original assignee: Chongqing Huijin Electromechanical Equipment Co ltd
Current assignee: Chongqing Huijin Electromechanical Equipment Co ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2024-03-22
Anticipated expiration: 2041-02-04
Also published as: CN112840883A

Abstract

The invention discloses a hedge trimmer which is small in overall size, light in weight and high in transmission efficiency, and comprises a main handle, an auxiliary handle, a cutting mechanism, a transmission assembly and a driver for driving the cutting mechanism to operate, wherein the driver is a permanent magnet coreless motor, and one side of the main handle is provided with a rechargeable battery for supplying power to the driver.

Description

Hedge trimmer

Technical Field

The invention relates to the technical field of hedge trimmers, in particular to a hedge trimmer.

Background

The hedge trimmer belongs to a special tool for landscaping, is used for pruning branches, shrubs and the like, and is convenient to operate and high in efficiency. The automatic pruning device generally comprises a motor, a power mechanism, a main handle, an auxiliary handle, a blade assembly and the like, wherein the blade assembly is driven to act through the power mechanism, branches, shrubs and the like are pruned, the labor intensity of operators is reduced, and the working efficiency is improved.

In order to meet the power requirement, the existing hedge trimmer is driven by a large-volume gasoline or diesel motor, and is heavy and inconvenient to operate.

In addition, the traditional hedge power is directly driven by a driver, the power output is abrupt during starting, and potential safety hazards are easy to generate.

Disclosure of Invention

In order to overcome the defects in the prior art, one of the purposes of the invention is to provide a hedge trimmer which has the advantages of small whole volume, light weight and high transmission efficiency.

One of the purposes of the invention is realized by adopting the following technical scheme: the hedge trimmer comprises a main handle, an auxiliary handle, a cutting mechanism, a transmission assembly and a driver for driving the cutting mechanism to operate, wherein the driver is a permanent magnet coreless motor, and one side of the main handle is provided with a rechargeable battery for supplying power to the driver.

Further, the driver is started in a soft start mode.

Further, the system comprises a control system, the control system controls the operation of the driver and comprises a voice prompt module, and the operation method of the voice prompt module and the driver is as follows:

1. when the power switch is pressed down, the voice prompt module sends out prompt equipment starting voice, and simultaneously broadcasts the current residual capacity of the rechargeable battery and the estimated running time;

2. pressing an equipment operation switch, and sending prompt voice about to be operated by the driver by the voice prompt module;

3. after the equipment operation prompting voice playing is completed and waiting for 1 second, the control system controls the driver to perform soft start operation;

4. the drive was started from rest, reached 30% of the set operating speed after 3 seconds, and then reached the set operating speed after 2 seconds.

Further, a power supply connection structure for fixing the rechargeable battery is arranged on one side of the main handle, which is away from the auxiliary handle;

the power connection structure comprises a socket positioned on the main handle, a power plug spliced with the socket and a battery compartment for accommodating a rechargeable battery.

Further, the main handle comprises a gripping part, a motor bin for accommodating a driver and a transmission bin for accommodating a transmission assembly which are sequentially arranged;

a positioning groove for fixing the driver is formed in the motor bin, and a plurality of heat dissipation holes are formed in the top of the motor bin and the bottom of the transmission bin;

the transmission bin is positioned at the bottom of the positioning groove, and an output shaft of the driver penetrates through the positioning groove to be connected with the transmission assembly.

Further, the auxiliary handle is fixed on the upper part of the cutting mechanism and comprises a shield fixed on the cutting mechanism and a handle positioned on one side of the shield;

the surface of the shield is provided with an opening with a triangular cross section, and the opening is positioned at the upper part of the handle;

one side of the shield facing the handle is provided with a reinforcing rib structure, and the handle is fixedly connected with the reinforcing rib structure.

Further, the cutting mechanism comprises a bracket, a first movable cutter in sliding connection with the bracket, a second movable cutter in sliding connection with the bracket, and a baffle plate positioned on the bracket;

the first movable cutter and the second movable cutter are connected with the transmission assembly.

Further, the transmission assembly is of a crankshaft transmission structure and comprises a transmission gear in linkage with the driver and transmission shafts respectively positioned at two sides of the transmission gear, and the two transmission shafts are respectively connected with the first movable cutter and the second movable cutter in one-to-one correspondence.

Further, the auxiliary handle is provided with an infrared sensor, and the working method of the infrared sensor is as follows:

1. only when the control system detects that the power switch, the equipment operation switch and the infrared sensor detect that the auxiliary handle is gripped at the same time, the driver is allowed to be started;

2. when the infrared sensor does not receive the detected signal and the auxiliary handle is not detected to be held by a hand, the operation of the driver is stopped immediately;

3. if the control system detects the power switch, the equipment running switch and the infrared sensor again and detects that the auxiliary handle is gripped, the driver soft start program is restored after 1 second of delay.

Further, the support is fixedly connected with the first movable cutter or the second movable cutter, an elastic plate is arranged on the surface of the support, the elastic plate is located at one end, close to the transmission assembly, of the support and is in a fold line-shaped structure, an elastic sheet in a 'I' -shaped structure is arranged on the surface of the support, and two ends of the elastic sheet are fixedly connected with the surface of the support.

Compared with the prior art, the invention has the beneficial effects that:

1. the hedge trimmer is driven by adopting a permanent magnet coreless motor, has high efficiency and low loss, and is matched with a rechargeable battery to supply power, so that the hedge trimmer has the advantages of small whole volume, light weight, high efficiency and long working time;

2. the intelligent voice broadcasting and prompting are adopted, so that the use is safer;

3. the driver adopts a soft start mode, so that impact on a transmission mechanism in a start stage is greatly reduced, the safety and reliability are improved, and the service life is prolonged.

The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention, as well as the preferred embodiments thereof, together with the following detailed description of the invention, given by way of illustration only, together with the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of the present embodiment;

fig. 2 is a schematic view of the structure at the main handle in the present embodiment;

fig. 3 is a schematic view of the structure of the cutting mechanism in this embodiment.

In the figure: 1. a main handle; 11. a grip portion; 12. a motor bin; 13. a transmission bin; 14. a positioning groove; 15. a heat radiation hole; 2. an auxiliary handle; 21. a shield; 22. a handle; 23. opening holes; 3. a cutting mechanism; 31. a bracket; 311. an elastic plate; 312. an elastic sheet; 32. a first movable cutter; 33. a second movable cutter; 34. a baffle; 4. a transmission assembly; 5. a driver; 6. a power supply connection structure; 61. a socket; 62. a power plug.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, a hedge trimmer mainly includes a main handle 1, an auxiliary handle 2, a cutting mechanism 3, a transmission assembly 4, and a driver 5 for driving the cutting mechanism 3 to operate, in this embodiment, for improving transmission efficiency and reducing power consumption, the driver 5 is replaced by a permanent magnet coreless motor, a rechargeable battery for supplying power to the driver 5 is disposed on one side of the main handle 1, and the power supply manner of the battery is adopted to replace the existing energy supply manner of adopting fuel, so that the hedge trimmer is more energy-saving and environment-friendly.

In order to improve the practical safety of the embodiment, the following two schemes are adopted:

1. the starting mode of the control driver 5 is soft start, a control chip is arranged, a control system is loaded, and the control system controls the driver 5 to operate;

2. the operation method of the voice prompt module and the driver 5 is as follows:

2. pressing an equipment operation switch, and sending out an operation prompt voice of the driver 5 by the voice prompt module;

3. after the equipment operation prompt voice playing is completed and after waiting for 1 second, the control system controls the driver 5 to perform soft start operation;

4. the drive 5 starts to run from rest, reaches 30% of the set running speed after 3 seconds, and then reaches the set running speed after 2 seconds.

The design of soft start not only realizes the buffering and protection of the transmission mechanism, but also can prevent abrupt start of the driver 5, gives operators a certain response time, and reduces the probability of injury to the staff and the periphery.

The voice prompt module can improve the intelligentization degree of the embodiment, and can give feedback to operators through voice prompt at each starting stage of the driver 5, thereby improving the protection and safety functions of the embodiment and improving the reliability of use.

The side of the main handle 1 facing away from the auxiliary handle 2 in this embodiment is provided with a power connection structure 6 for fixing a rechargeable battery, and the power connection structure comprises a socket 61 located on the main handle 1, a power plug 62 plugged into the socket 61, and a battery compartment for accommodating the rechargeable battery. The socket 61 and the power plug 62 are detachably connected, so that the replacement of the battery can be realized, and the cruising ability of the embodiment during outdoor operation is ensured.

The main handle 1 comprises a gripping part 11, a motor bin 12 for accommodating the driver 5 and a transmission bin 13 for accommodating the transmission assembly 4, which are sequentially arranged, and the main handle is compact in structure, and meanwhile, the main weight is concentrated in the main handle, so that the gravity distribution problem of the main handle 1, the power supply connecting structure 6 and the cutting mechanism 3 in the use process is realized, and the problems of unbalanced gripping, difficult use and the like caused by overlarge weight at one end are avoided.

The motor bin 12 of the embodiment is internally provided with the positioning groove 14 for fixing the driver 5, so that the driver 5 is stably installed, and the top of the motor bin 12 and the bottom of the transmission bin 13 are respectively provided with a plurality of heat dissipation holes 15, so that the heat dissipation condition of the driver 5 during working is ensured.

The transmission bin 13 is positioned at the bottom of the positioning groove 14, and the output shaft of the driver 5 passes through the positioning groove 14 and is connected with the transmission assembly 4.

The cutting mechanism 3 comprises a bracket 31, a first movable cutter 32 in sliding connection with the bracket 31, a second movable cutter 33 in sliding connection with the bracket 31, and a baffle 34 positioned on the bracket 31, wherein the first movable cutter 32 and the second movable cutter 33 are connected with a transmission assembly.

The transmission assembly 4 in this embodiment adopts a crank transmission mode, which can save space and reduce the volume and occupation space of the transmission assembly 4, and the specific structure comprises a transmission gear linked with the driver 5 and transmission shafts respectively positioned at two sides of the transmission gear, wherein the two transmission shafts are respectively connected with the first movable cutter 32 and the second movable cutter 33 in one-to-one correspondence, and realize shearing through the cross reciprocating motion of the two movable cutters.

In addition, the auxiliary handle 2 of the embodiment is fixed on the upper portion of the cutting mechanism 3, the auxiliary handle 2 comprises a shield 21 fixed on the cutting mechanism 3 and a handle 22 positioned on one side of the shield 21, the handle 22 is used for an operator to grasp, the shield 21 plays a role in protecting, and sheared branches, blades are prevented from splashing and scratching the operator.

The surface of the shield 21 is provided with an opening 23 with an inverted triangle cross section, the opening 23 is positioned at the upper part of the handle 22 and can be used as a ventilation hole, so that unnecessary resistance is avoided from being generated when the shield 21 is designed in a strong wind environment, and the operation is influenced.

In order to improve the structural strength of the shield 21, a reinforcing rib structure is arranged on one side, facing the handle 22, of the shield 21, the handle 22 is fixedly connected with the reinforcing rib structure, and operators are more credited during gripping, so that shaking is reduced. The ribs have a circular structure which is longitudinal, inclined and coaxial with the handle 22, and have simple structure and high strength.

Because the support 31 is fixedly connected with the first movable cutter 32 or the second movable cutter 33, in order to reduce rigid shake of the support 31 and deformation in the working process, in this embodiment, one end of the support 31, which is close to the transmission component 4, is designed into a multi-section bending structure, an elastic plate 311 is arranged on the surface of the support 31, the elastic plate 311 is positioned at one end of the support 31, which is close to the transmission component 4, and is also in a fold line structure, and then is matched with an elastic sheet 312 in a ">" shape structure on the surface of the support 31, two ends of the elastic sheet 312 are fixedly connected with the surface of the support 31, so that the support 31 has certain longitudinal elastic deformation capability, when the transmission component drives the first movable cutter 32 or the second movable cutter to move, the elastic sheet 312 and the elastic plate 311 prevent the support 31 from deforming on one hand, when the force reaches to approach to the critical value of damage to the support 31, a small amount of deformation is allowed, and then the support 31 is assisted by elastic deformation restoring force of the elastic sheet 312 and the elastic sheet 311 itself.

In order to further improve the safety protection measures of the embodiment, an infrared sensor is additionally arranged on the auxiliary handle 2 and can be arranged on the handle 22 or the shield 21 to be connected with a control system, and the specific working method is as follows:

1. the actuator 5 is allowed to be actuated only when the control system detects the power switch, the device running switch and the infrared sensor simultaneously that the sub-handle 2 is gripped;

2. when the infrared sensor does not receive the detected signal and the auxiliary handle 2 is not detected to be held by hands during the operation of the driver 5, the operation of the driver 5 is immediately stopped;

3. if the control system detects the power switch, the equipment running switch and the infrared sensor again and detects that the auxiliary handle 2 is gripped, the driver 5 soft start program is restored after a delay of 1 second.

In the use process, the operator is required to grip the auxiliary handle 2 according to a standard operation mode to start cutting operation, and the system automatically judges that the equipment is in an abnormal working state, stops the operation of the driver 5 and avoids accidents as much as possible.

The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.

Claims

1. The utility model provides a hedge trimmer, includes main handle, auxiliary handle, cutting mechanism, drive assembly and is used for driving the driver of cutting mechanism operation, its characterized in that: the driver is a permanent magnet coreless motor, and one side of the main handle is provided with a rechargeable battery for supplying power to the driver;

the cutting mechanism comprises a bracket, a first movable cutter, a second movable cutter and a baffle, wherein the first movable cutter is in sliding connection with the bracket;

the first movable cutter and the second movable cutter are connected with the transmission assembly;

the transmission assembly is of a crankshaft transmission structure and comprises a transmission gear in linkage with the driver and transmission shafts respectively positioned at two sides of the transmission gear, and the two transmission shafts are respectively connected with the first movable cutter and the second movable cutter in one-to-one correspondence;

the support is fixedly connected with the first movable cutter or the second movable cutter, an elastic plate is arranged on the surface of the support, the elastic plate is positioned at one end of the support, which is close to the transmission assembly, and is in a fold line structure, an elastic sheet in a 'I' -shaped structure is arranged on the surface of the support, and two ends of the elastic sheet are fixedly connected with the surface of the support;

the auxiliary handle is fixed on the upper part of the cutting mechanism and comprises a shield fixed on the cutting mechanism and a handle positioned on one side of the shield;

a reinforcing rib structure is arranged on one side, facing the handle, of the shield, and the handle is fixedly connected with the reinforcing rib structure;

the starting mode of the driver is soft start;

the system comprises a control system, wherein the control system controls the operation of the driver and comprises a voice prompt module, and the operation method of the voice prompt module and the driver is as follows:

4. the driver starts to run from rest, reaches 30% of the set running speed after 3 seconds, and then reaches the set running speed after 2 seconds;

the auxiliary handle is provided with an infrared sensor, and the working method of the infrared sensor is as follows:

2. A hedge trimmer according to claim 1 wherein: a power supply connection structure for fixing the rechargeable battery is arranged on one side of the main handle, which is away from the auxiliary handle;

3. A hedge trimmer according to claim 1 wherein: the main handle comprises a gripping part, a motor bin for accommodating a driver and a transmission bin for accommodating a transmission assembly which are sequentially arranged;