CN217621052U

CN217621052U - Portable chain saw

Info

Publication number: CN217621052U
Application number: CN202220652733.3U
Authority: CN
Inventors: 不公告发明人
Original assignee: Youwei Technology Suzhou Co ltd
Current assignee: Youwei Technology Suzhou Co ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-10-21
Anticipated expiration: 2032-03-23

Abstract

The application provides a portable chain saw, which comprises a shell, a motor, a guide plate, a saw chain and a power supply, wherein the motor is arranged on the shell, the guide plate is arranged outside the guide plate, the saw chain supplies power to the motor, the saw chain is driven by the motor and rotates around the guide plate, the power supply comprises a plurality of battery cell units, the shell comprises a first shell part for accommodating the motor, a second shell part for accommodating the power supply and a third shell part for accommodating the guide plate, the axes of the battery cell units are parallel to or coincident with the axis of the second shell part, and the second shell part is constructed into a holding area; the axes of the first housing portion, the second housing portion, and the third housing portion intersect at a common intersection point, and the center of gravity of the portable chain saw is located between the intersection point and the free end of the guide plate. The portable chain saw is arranged between the intersection point and the free tail end of the guide plate, and is pressed down by the self gravity during cutting, so that the front end of the chain saw is prevented from being lifted, the cutting work is more labor-saving, and the operation experience is favorably improved; the power supply is accommodated in the holding area, which is beneficial to improving the compactness of the structure.

Description

Portable chain saw

Technical Field

The application relates to a gardens electric tool especially relates to a portable chain saw.

Background

A chain saw is a relatively common garden cutting tool, and the power source of the chain saw is changed from an internal combustion engine to an alternating current power source, and then the appearance size of the chain saw is greatly changed from a direct current power source which is rapidly developed in recent years, for example, a portable chain saw which can be operated by one hand appears in recent years. The traditional chain saw has large volume and weight, is suitable for sawing large-size wood, and has poor cutting efficiency compared with a portable chain saw due to the weight and the size of the small-size wood. Of course, the portable chain saw is operated by a single hand, the overall layout and the gravity center arrangement have great influence on the operation comfort, and the user experience is difficult to ensure.

Disclosure of Invention

The application provides a portable chain saw is favorable to improving the operation travelling comfort.

The application provides a portable chain saw, it includes the casing, installs in motor, baffle of casing, sets up the saw chain of baffle periphery and for the power of motor power supply, the saw chain by the motor drive, around the baffle rotates, the power includes a plurality of electricity core units, the casing is including holding the first casing portion of motor, holding the second casing portion of power and holding the third casing portion of baffle, the axis of a plurality of electricity core units is parallel with the axis of second casing portion or coincide, the second casing portion structure is for holding the region; the axes of the first housing portion, the second housing portion, and the third housing portion intersect at a common intersection point, and a center of gravity of the portable chain saw is located between the intersection point and a free end of a guide plate.

Further, the distance between the center of gravity of the portable chain saw and the intersection point is 25-35 mm.

Further, the housing further comprises a cover plate, the cover plate and the third housing portion together cover a portion of the guide plate and a portion of the saw chain, and the center of gravity of the portable chain saw is located in an area covered by the cover plate.

Furthermore, the included angle between the connecting line of the gravity center of the portable chain saw and the intersection point and the axis of the motor is 55-65 degrees.

Furthermore, the included angle between the axis of the motor and the axis of the power supply is 65-85 degrees; and/or the included angle between the axis of the motor and the axis of the guide plate is 50-70 degrees.

Further, the portable chainsaw also includes a collection element mounted to the third housing portion and having an opening facing the saw chain.

Further, the collecting member is rotatably mounted to the third housing portion.

Further, the portable chain saw comprises a metal clamping tooth part and a plastic clamping tooth part which are arranged on one side of the third housing part close to the free end of the guide plate; the metal latch part and the plastic latch part are arranged along the direction perpendicular to the axis of the guide plate.

Further, the metal latch part comprises a first latch tooth, the plastic latch part comprises a second latch tooth, and an orthographic projection of the second latch tooth on the guide plate is located in an orthographic projection of the second latch tooth on the guide plate.

Further, the axis of the motor is parallel to or coincident with the axis of the first housing part, and the axis of the guide plate is parallel to or coincident with the axis of the third housing part.

The portable chain saw is arranged between the intersection point and the free tail end of the guide plate, and is pressed down by the self gravity during cutting, so that the front end is prevented from being lifted during cutting, the cutting work is more labor-saving, and the operation experience is favorably improved; the power supply part is accommodated in the holding area, which is beneficial to improving the compactness of the structure.

Drawings

Fig. 1 is a perspective view of a portable chain saw according to an embodiment of the present application.

FIG. 2 is a partially exploded view of the portable chain saw shown in FIG. 1.

FIG. 3 is a front schematic view of the portable chain saw of FIG. 1, wherein one housing half is not shown.

FIG. 4 is a rear schematic view of the portable chain saw shown in FIG. 1.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments 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 have the same meaning as commonly understood by one of ordinary skill in the art to which this 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", "rear", "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. 1 to 3, an embodiment of the present invention provides a portable chain saw 100, which includes a housing 1, a motor 2 mounted on the housing, a guide plate 3, a saw chain 4 disposed on an outer periphery of the guide plate, and a power supply 5 for supplying power to the motor, wherein the saw chain 4 is driven by the motor 2 and rotates around the guide plate 3 to perform a cutting operation. In particular, the motor directly or indirectly drives the output shaft 6 to which the saw chain is connected. Optionally, a transmission 9 is provided between the motor 2 and the output shaft 6 driving the saw chain to effect a reduction in speed and increase torque.

The housing 1 comprises a first housing part 11 for accommodating the motor 2, a second housing part 12 for accommodating the power supply 5, a third housing part 13 for accommodating the guide plate 3 and the saw chain 4, and a fourth housing part 14 for protecting a user, wherein the first housing part 11 is connected with the second housing part 12 and the third housing part 13, and the fourth housing part 14 is connected with the first housing part 11 and the second housing part 12. A space 10 for accommodating a hand is formed between the fourth housing part 14 and the first and

second housing parts

11, 12, the second housing part 12 is configured as a holding area, the hand of a user is held on the second housing part 12, a part of fingers are positioned in the space 10, and the fourth housing part 14 forms a barrier to prevent the user's hand from being hurt by a broken chain during cutting. "accommodating" is understood here to mean accommodating a part or accommodating the whole.

Referring to fig. 4, the axis L1 of the motor 2, the axis L2 of the power source 5, and the axis L3 of the guide plate 3 intersect at a same intersection point O, so that the whole machine conforms to ergonomics, and a user can perform cutting work with a comfortable motion. The center of gravity G of the portable chainsaw 100 is located between the intersection point O and the free end of the guide plate 3. When the user saw cut the operation, the focus is less from the distance of saw tangent point (being the mid point of saw chain lower half usually), and the chain saw relies on self gravity to push down, lifts on the front end of chain saw when avoiding the cutting for the time cutting work is more laborsaving, is favorable to promoting the operation and experiences. The term "axis" as used herein is intended to mean the centerline or approximate centerline of each element.

When the distance between the gravity center G of the whole machine and the intersection point O is less than 25mm, the gravity center is far away from the sawing point, and a user needs to apply a large downward force during sawing so as to ensure the sawing effect, so that the user experience is still not good enough; when the distance between the gravity center G of the whole chain saw and the intersection point O is larger than 35mm, the gravity center of the whole chain saw is far away from the holding area, so that a user can hold the portable chain saw more difficultly (in an ideal state, the gravity center is located in the holding area, and the holding hand feeling is optimal). Therefore, the distance between the center of gravity of the portable chainsaw 100 and the intersection is preferably 25 to 35mm. Furthermore, the included angle between the connecting line of the gravity center G and the intersection point O and the axis of the motor 2 is 55-65 degrees.

The power supply 5 comprises a plurality of battery cell units, the axis of each battery cell unit is parallel to the second housing part 12, the axis 2 of the motor is parallel to or coincident with the axis of the first housing part 11, and the axis of the guide plate 13 is parallel to or coincident with the axis of the third housing part 13.

In this embodiment, in order to further conform to ergonomics, an included angle between the axis L1 of the motor 2 and the axis L2 of the power supply 5 is 65 to 85 °, and an included angle between the axis L1 of the motor 2 and the axis L3 of the guide plate is 50 to 70 °.

The housing 1 further comprises a cover plate 15, the cover plate 15 and the third housing part 13 together covering part of the guide plate 3 and part of the saw chain 4, the centre of gravity G of the portable chain saw being located in the area covered by the cover plate, and the output shaft 6 also being covered by the cover plate 15.

The portable chain saw includes a metal tooth portion 131 and a plastic tooth portion 132 on the front side of the third housing portion 13 with the free end of the guide plate 3 as the front and the holding area as the rear, and the metal tooth portion 131 and the plastic tooth portion 132 are arranged in a direction perpendicular to the guide plate axis and the motor axis. The toughness of the plastic clamping tooth part is good, the rigidity of the metal clamping wood tooth is high, and the plastic clamping tooth part and the metal clamping wood tooth are mutually supported, so that the structure is stronger and more reliable. The metal latch part 131 comprises a plurality of first latch teeth, the plastic latch part 132 comprises a plurality of second latch teeth, and the orthographic projection of the second latch teeth on the guide plate 3 is positioned in the orthographic projection of the first latch teeth on the guide plate 3, that is, the first latch teeth are larger and more protruded than the second latch teeth, and the first latch teeth and the second latch teeth work together to clamp more firmly during cutting, especially to adapt to an uneven cutting surface.

The portable chain saw 100 further comprises a shield 7 and a collecting element 8, the shield 7 and the collecting element 8 are respectively located at the upper side and the lower side of the saw chain 4, and the shield 7 is used for protecting a user and preventing the user from touching the saw chain 4 by mistake. The protective cover is rotatably arranged on the third shell part 13, the protective cover 7 is jacked up to realize yielding after the sawing is finished, and then the protective cover returns to the initial state, and the restoring force can be provided by a torsion spring. The collecting element 8 is for collecting wood chips when the portable chainsaw is cutting, the collecting element 8 being mounted to the third housing part 13 and having an opening 80 facing the saw chain 4. Preferably, the collecting member 8 is rotatably mounted to the third housing part 13, and the collecting member 8 is normally biased by a resilient member to be in a collecting state, and when a force is applied by a user, the collecting member 8 is rotated against the resilient force of the resilient member to discharge the collected wood chips.

An oil can 17 is also provided in the housing 1 for containing oil for lubrication and cooling.

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 portable chain saw, its includes the casing, install in motor, the baffle of casing, set up in the saw chain of baffle periphery and for the power of motor power supply, the saw chain by motor drive rotates around the baffle, its characterized in that:

the shell comprises a first shell part for accommodating the motor, a second shell part for accommodating the power supply and a third shell part for accommodating the guide plate, the axes of the plurality of battery cell units are parallel to or coincide with the axis of the second shell part, and the second shell part is constructed as a holding area;

the axis of the motor, the axis of the power source, and the axis of the guide plate intersect at a common intersection point, and the center of gravity of the portable chain saw is located between the intersection point and the free end of the guide plate.

2. The portable chain saw of claim 1, wherein: the distance between the gravity center of the portable chain saw and the intersection point is 25-35 mm.

3. The portable chain saw of claim 2, wherein: the housing further includes a cover plate, the cover plate and the third housing portion together covering a portion of the guide plate and a portion of the saw chain, the center of gravity of the portable chain saw being located within an area covered by the cover plate.

4. The portable chainsaw of claim 2, wherein: the included angle between the connecting line of the gravity center and the intersection point of the portable chain saw and the axis of the motor is 55-65 degrees.

5. The portable chain saw of claim 1, wherein: the included angle between the axis of the motor and the axis of the power supply is 65-85 degrees; and/or

The included angle between the axis of the motor and the axis of the guide plate is 50-70 degrees.

6. The portable chainsaw of claim 1, wherein: the portable chainsaw also includes a collection element mounted to the third housing portion and having an opening facing the saw chain.

7. The portable chainsaw of claim 6, wherein: the collecting element is rotatably mounted to the third housing part.

8. The portable chain saw of claim 1, wherein: the portable chain saw comprises a metal clamping tooth part and a plastic clamping tooth part, wherein the metal clamping tooth part and the plastic clamping tooth part are positioned on one side of the third shell part close to the free end of the guide plate;

the arrangement direction of the metal clamping tooth parts and the plastic clamping tooth parts is perpendicular to the axis of the guide plate and the axis of the motor.

9. The portable chain saw of claim 8, wherein: the metal clamping tooth part comprises a plurality of first clamping wood teeth, the plastic clamping tooth part comprises a plurality of second clamping wood teeth, and the orthographic projection of the second clamping wood teeth on the guide plate is located in the orthographic projection of the first clamping wood teeth on the guide plate.

10. The portable chain saw as recited in any one of claims 1 to 9, wherein: the axis of the motor is parallel to or coincided with the axis of the first shell part, and the axis of the guide plate is parallel to or coincided with the axis of the third shell part.