CN216960988U

CN216960988U - Chain saw

Info

Publication number: CN216960988U
Application number: CN202220462057.3U
Authority: CN
Inventors: 黄舒; 张林高
Original assignee: Globe Jiangsu Co Ltd
Current assignee: Globe Jiangsu Co Ltd
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-07-15
Anticipated expiration: 2032-03-04

Abstract

The utility model provides a chain saw, which relates to the technical field of garden tools and comprises the following components: a housing; the cutter is arranged on the shell and comprises a cutter chain and a cutter plate for supporting the cutter chain; the motor is fixed in the shell and used for driving the cutter to operate; the blast wheel is fixed at the end part of the motor and is used for radiating heat of the motor; the air guide cover is fixed inside the shell; the motor is positioned in the air guide cover, an air outlet is formed in the air guide cover, an air window is formed in the bottom of the shell, the air outlet corresponds to the air window, and the air outlet is matched with the air window in size. The design mode that the areas of the air outlet and the air window are the same is adopted, so that no turbulent flow occurs at the air window in the heat dissipation process of the chain saw, and the air exhaust efficiency is improved.

Description

Chain saw

Technical Field

The utility model relates to the technical field of garden tools, in particular to a chain saw.

Background

The chain saw is a portable saw taking gasoline, electric power or hydraulic pressure and the like as power, is usually used for cutting timber, stone, steel and the like, effectively saves time, manpower and the like consumed by cutting materials, and further improves the working efficiency of users. A chainsaw generally includes a blade assembly, a motor for driving the blade assembly, and a housing. The shell comprises a main shell for accommodating the motor and a motor cover for coating the tail part of the motor.

However, the gap between the existing motor cover and the motor air outlet is large. When the motor bleeds, the condition of the sinuous flow can appear in the part wind and stop in the motor cover to reduced the efficiency of airing exhaust of motor, and then made temperature rising such as motor, control circuit board, reduced motor operating stability, can make the motor shut down even.

Therefore, there is a need for an improved chain saw.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, the present invention provides a chain saw, which is used to solve the problem of the prior art that the air flow at the air outlet of the motor has a turbulent flow, thereby reducing the air exhausting efficiency of the motor.

To achieve the above and other related objects, the present invention provides a chain saw comprising: a housing; the cutter is arranged on the shell and comprises a cutter chain and a cutter plate for supporting the cutter chain; the motor is fixed in the shell and used for driving the cutter to operate; the blower wheel is fixed at the end part of the motor and dissipates heat of the motor; the air guide cover is fixed inside the shell; the motor is located in the air guide cover, an air outlet is formed in the air guide cover, an air window is formed in the bottom of the shell, the air outlet and the air window are arranged correspondingly, and the air outlet is matched with the air window in size.

In an embodiment of the present invention, the side wall of the air outlet is attached to the inner wall of the housing at the air window.

In an embodiment of the utility model, an area of the air outlet is equal to an area of the air window.

In an embodiment of the present invention, the wind scooper includes: the first cover casing is sleeved on the outer side of the motor and is connected with the shell; and the second cover shell is connected with the first cover shell, a blast chamber is formed between the second cover shell and the first cover shell, and the blast wheel is arranged in the blast chamber.

In an embodiment of the present invention, the housing includes: a first housing; the second machine shell is connected with the first machine shell, and an accommodating cavity is formed between the second machine shell and the first machine shell; and the upper cover is fixed at the tops of the first shell and the second shell.

In an embodiment of the utility model, the air window is opened at the bottom of the first casing.

In an embodiment of the present invention, the upper cover is provided with an opening, and the opening corresponds to the battery pack cavity in the housing.

In an embodiment of the present invention, the housing further includes: the handle is formed at one end, far away from the cutter, of the shell, and a control trigger for controlling the driving unit is further arranged on the handle.

In an embodiment of the present invention, one end of the output shaft of the motor passes through the housing, and the other end of the output shaft is coaxially fixed with the blower wheel.

In an embodiment of the utility model, the chain saw further includes at least one battery pack, the housing is provided with an engaging member for engaging the battery pack, and the engaging member is disposed on any side of the housing.

As described above, the chain saw according to the present invention has the following advantageous effects:

1. the air guide cover is arranged in the shell, and the motor and the blast wheel are arranged in the air guide cover, so that a certain guiding effect is provided for air flow generated by the blast wheel, and hot air flow on the peripheral side of the motor can be prevented from flowing in the shell.

2. The air outlet is tightly connected with the air window, so that hot air can be prevented from flowing to the position in the shell when cold air and hot air in the blast chamber are exchanged, and the heat dissipation effect is further reduced.

3. The area of the air outlet and the area of the air window are arranged in the same mode, so that when the air outlet is exhausted, the air window can directly exhaust the air quantity exhausted by the air outlet to the outside, the phenomenon of turbulent flow cannot occur at the air window, the air outlet efficiency is further improved, and meanwhile the heat dissipation effect is also improved.

Drawings

FIG. 1 shows an isometric view of one embodiment of a chain saw of the present invention;

FIG. 2 shows an exploded view of one embodiment of a chain saw of the present invention;

FIG. 3 is a schematic view of a wind scooper of a chain saw according to an embodiment of the present invention;

FIG. 4 is a schematic view of an air outlet of a chain saw according to an embodiment of the present invention;

FIG. 5 is a schematic view of a window of a chain saw according to an embodiment of the utility model.

Description of the element reference

1. A housing; 11. a first housing; 12. a second housing; 13. an upper cover; 14. opening the mouth; 15. a grip; 16. a wind window; 17. protecting hands; 2. a wind scooper; 21. a first housing; 22. a second housing; 23. an air outlet; 3. a motor; 4. a blower wheel.

Detailed Description

The following embodiments of the present invention are provided by specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure of the present invention. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.

Please refer to fig. 1 to 5. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Referring to fig. 1 and 2, the present invention provides a chain saw including a housing 1; a cutter (not shown) mounted on the housing 1; a power assembly (not shown) accommodated in the housing 1 and used for driving the cutter to perform cutting work; a control assembly (not shown) mounted on the end of the housing 1 remote from the cutter for controlling the power assembly; and the heat dissipation mechanism is arranged in the shell 1 and positioned on the power assembly and used for dissipating heat of the power assembly.

Referring to fig. 2, in the present embodiment, the housing 1 is substantially shaped like a long box, and the housing 1 includes a first housing 11, a second housing 12 and an upper cover 13. The first housing 11 and the second housing 12 are similar in shape and structure, and the first housing 11 and the second housing 12 together enclose a receiving cavity (not shown) for mounting parts of the chain saw. The outer side wall of the second housing 12 is stepped, so that the cutter can be installed at the outer side of the housing 1, which is convenient for installation and disassembly. The upper cover 13 is fixed on the upper sides of the first casing 11 and the second casing 12, an opening 14 is further formed in the upper cover 13, and the opening 14 corresponds to a power supply socket on the casing 1, so that the battery pack can be conveniently inserted into the power supply socket in the casing 1.

Referring to fig. 2 and 3, in the present embodiment, the housing 1 has a handle 15 at the rear end, a hand guard 17 is formed at the lower side, and the length direction of the handle 15 is substantially parallel to the extending direction of the chain saw assembly 5; the handle 15 is formed by enclosing the end parts of the first casing 11 and the second casing 12, namely the handle 15 and the casing 1 are integrally formed, so that on one hand, the stability of the connection between the handle 15 and the casing 1 is enhanced, and a user can conveniently hold the chain saw for cutting operation; on the other hand, the production steps and the flow of the shell 1 are simplified, and the purpose of reducing the production cost of the chain saw is achieved.

In addition, a control assembly is arranged at the handle 15, wherein the control assembly comprises a control board and a switch trigger, and the control board is arranged inside the shell 1 and is used for receiving instructions transmitted by the switch trigger and controlling the start and stop of the power assembly; the switch trigger is arranged at the handle 15 and is electrically connected with the control panel, one end of the switch trigger penetrates through the shell 1 and is rotationally connected with the inner side wall of the shell 1; the other end extends outside the shell 1, which is convenient for the user to toggle the switch trigger by fingers. In another embodiment of the present invention, the handle 15 may be provided in a split manner with the housing 1, which only needs to satisfy the connection stability between the handle 15 and the housing 1 and ensure the feasibility of holding the chain saw by a user.

Referring to fig. 3 and 4, in the present embodiment, a wind scooper 2 is further connected in the casing 1, and the wind scooper 2 is used for installing the motor 3 of the power assembly and the blower wheel 4 in the heat dissipation mechanism. Specifically, the wind scooper 2 includes a first shell 21 and a second shell 22; the first housing 21 is a hollow cylinder, the first housing 21 is sleeved outside the motor 3 and fixedly connected with the first housing 11 through bolts, the length of the motor 3 is greater than that of the first housing 21, and cooling air flow can enter the first housing 21 from a gap between the first housing 21 and the first housing 11; the second casing 22 is in a volute shape, the second casing 22 and the first casing 21 are fixed by bolts, and a blast chamber (not shown) is formed between the second casing 22 and the bottom wall of the motor 3 and is used for accommodating the blast wheel 4. In the embodiment of the present application, the second housing 22 is provided separately from the first housing 11, so that the compatibility of the heat dissipation manner can be ensured.

Referring to fig. 3, fig. 4 and fig. 5, further, an air outlet 23 is formed on the air guiding hood 2, and the air outlet 23 is formed by splicing the first enclosure 21 and the second enclosure 22; the bottom of the first casing 11 is provided with an air window 16, and the air outlet 23 is aligned with the air window 16; it should be noted that the side wall of the air outlet 23 is attached to the inner wall of the first housing 11 at the air window 16, so as to form an air duct communicated with the outside. When the motor 3 rotates, the blower wheel 4 is driven to rotate, the blower wheel 4 discharges the air in the second housing 22 through the air outlet 23, negative pressure is formed in the second housing 22, and the air in the first housing 21 is guided into the second housing, so that air flow is formed. The cooling air flow of the cooling motor 3 is discharged from the first housing, the second housing and the air outlet, and does not exchange heat with the air in the housing, so that the cooling efficiency is ensured. In addition, the tight connection between the air outlet 23 and the air window 16 can prevent the hot air from flowing to the position of the housing 1 when the cold and hot air in the blast chamber are exchanged, thereby reducing the heat dissipation effect.

In the utility model, the area of the air outlet 23 and the area of the air window 16 are arranged in the same way, so that when the air is exhausted from the air outlet 23, the air window 16 can directly exhaust the air quantity exhausted from the air outlet 23 to the outside, the phenomenon of turbulent flow at the air window 16 cannot occur, the air outlet efficiency is further improved, and the heat dissipation effect is also improved.

Referring to fig. 1 and 2, in the present embodiment, a cutter (not shown) includes a cutter chain and a cutter plate for supporting the cutter chain. One end of the knife board is fixed in the shell 1 through a fastener, and the other part of the knife board extends forwards along the length direction of the shell 1; the cutter chain is arranged on the side wall of the cutter plate in a surrounding mode, is connected to the cutter plate in a rotating mode and can rotate at a high speed under the driving action of the power assembly to perform cutting work.

Referring to fig. 1 and 2, the power assembly includes a driving unit for driving the cutter and a power supply unit for supplying power to the driving unit. It should be noted that the driving unit is the motor 3 in this embodiment, and one end of the output shaft of the motor 3 passes through the second casing 12 and extends outside the housing 1, so as to facilitate the installation or detachment of the cutter and the motor 3; in addition, in other embodiments of the present invention, the driving unit may also be a power machine such as an engine. Further, a blower wheel 4 is fixed at the end of the motor 3, and one end of the motor 3, which is far away from the cutter, is coaxially fixed with the blower wheel 4, so that the blower wheel 4 can rotate along with the rotation of the output shaft of the motor 3, and the heat of the motor 3 is dissipated.

The power supply unit (not shown) comprises a power supply socket and a battery pack detachably connected to the power supply socket; furthermore, the power supply socket is arranged between the handle 15 and the cutter and corresponds to the upper cover 13, so that the center of gravity of the chain saw is positioned in the range that the handle 15 is perpendicular to the center of the shell 1 and the width of the two sides of the power supply socket is 2 times of the width of the shell 1, and the stability of the chain saw during placement can be effectively guaranteed.

In a preferred embodiment of the present invention, two power supply sockets are symmetrically disposed and located on two sides of the housing 1 in the width direction, respectively, so that the battery pack is inserted and fixed outside the housing.

Specifically, the power supply unit further includes an engaging member (not shown) provided on the case 1 for engaging the battery pack, and the power supply socket is provided corresponding to the engaging member so that the battery pack is detachably coupled to the case 1 by the engaging member and electrically connected to the power supply socket. In this embodiment, the fastener includes the die cavity and sets up the guide rail groove in the die cavity, and the fastener symmetry sets up in the both sides of casing 1, and the power supply socket is acceptd in the die cavity, and the battery package passes through the guide rail groove card and holds and accept in the die cavity to make the electric connection between battery package and the power supply socket stable, effectively prevent the power supply of chain saw that causes because of taking place to drop between battery package and the die cavity unusual.

It should be noted that, in the present invention, only the engaging member is taken as an example of the combination of the cavity and the guide rail groove, in other embodiments of the present invention, the engaging member may also be a structure that is disposed on the housing 1 and can be used to connect/receive a battery pack, such as a retaining groove, a connecting protrusion, etc., and one engaging member can be used to connect at least one battery pack, that is, the structure of the power supply unit shown in the drawings of the present specification is merely exemplary and should not be limited thereto.

In summary, the air guide cover is arranged in the shell, and the motor and the blast wheel are arranged in the air guide cover, so that a certain guiding effect is provided for the airflow generated by the blast wheel, and the hot airflow around the motor can be prevented from flowing in the shell; the air outlet is tightly connected with the air window, so that hot air can be prevented from flowing to the position in the shell when cold air and hot air in the blast chamber are exchanged, and the heat dissipation effect is further reduced; the area of the air outlet and the area of the air window are arranged in the same mode, so that when the air outlet is exhausted, the air window can directly exhaust the air quantity exhausted by the air outlet to the outside, the phenomenon of turbulent flow cannot occur at the air window, the air outlet efficiency is further improved, and meanwhile the heat dissipation effect is also improved. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A chain saw, comprising:

a housing;

the cutter is arranged on the shell and comprises a cutter chain and a cutter plate for supporting the cutter chain;

the motor is fixed in the shell and used for driving the cutter to operate;

the blower wheel is fixed at the end part of the motor and dissipates heat of the motor;

the air guide cover is fixed inside the shell;

the motor is positioned in the air guide cover, an air outlet is formed in the air guide cover, an air window is formed in the bottom of the shell, the air outlet corresponds to the air window, and the air outlet is matched with the air window in size.

2. The chain saw as recited in claim 1, wherein: the side wall of the air outlet is attached to the inner wall of the shell, which is located at the air window.

3. The chain saw as recited in claim 1, wherein: the area of the air outlet is equal to that of the air window.

4. The chain saw as recited in claim 1, wherein: the wind scooper includes:

the first cover casing is sleeved on the outer side of the motor and is connected with the shell;

and the second cover shell is connected with the first cover shell, a blast chamber is formed between the second cover shell and the first cover shell, and the blast wheel is arranged in the blast chamber.

5. The chain saw as recited in claim 1, wherein: the housing includes:

a first housing;

the second machine shell is connected with the first machine shell, and an accommodating cavity is formed between the second machine shell and the first machine shell;

and the upper cover is fixed at the tops of the first shell and the second shell.

6. The chain saw as recited in claim 5, wherein: the air window is arranged at the bottom of the first shell.

7. The chainsaw of claim 5, wherein: the upper cover is provided with an opening, and the opening corresponds to the battery pack cavity in the shell.

8. The chain saw of claim 1, wherein: the housing further includes:

the handle is formed at one end, far away from the cutter, of the shell, and a control trigger for controlling the motor is further arranged on the handle.

9. The chain saw as recited in claim 1, wherein: one end of an output shaft of the motor penetrates through the shell, and the other end of the output shaft of the motor is coaxially fixed with the blast wheel.

10. The chain saw as recited in claim 9, wherein: the chain saw further comprises at least one battery pack, a joint piece used for being jointed with the battery pack is arranged on the shell, and the joint piece is arranged on any one side of the shell.