Double-wrapping chain saw

Abstract

The utility model provides a double-pack chain saw which comprises a main body shell, a guide plate, a saw chain, an electric motor and a handle, and a first battery pack and a second battery pack are arranged in parallel in the axial direction of forward protruding and extending of the guide plate; the bottoms of the first battery pack and the second battery pack do not protrude out of the bottom of the main body shell; or, the bottoms of the first battery pack and the second battery pack protrude out of the bottom of the main body shell, so that the bottom of the first battery pack and the bottom of the second battery pack jointly form a horizontal supporting part of the chain saw. According to the technical scheme, the first battery pack and the second battery pack are arranged in parallel in the axial direction of forward protruding and extending of the guide plate, so that the layout of the battery packs is more regular and ordered, and operation and use are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a chain saw, especially a double-pack chain saw driven by battery pack. BACKGROUND

[0002] As a garden tool, the chain saw can be used by users to fell trees and make timber, and has the advantages of convenient carrying and easy operation. In order to meet the requirement of cutting large-sized timber, a large output power needs to be provided to make the chain saw have strong power, so the size of the main part of the chain saw is large. After long-time operation of the chain saw, the user will feel tired. Especially for the chain saw powered by direct current, the battery pack providing power output is installed on the chain saw body, so the volume is larger and the weight is heavier. How to provide a chain saw convenient for users to use and operate is a technical problem to be solved by those skilled in the art. SUMMARY

[0003] The utility model aims at providing a chain saw convenient for users to use and operate.

[0004] Therefore, the utility model provides a double-pack chain saw, which comprises:

[0005] a main body shell;

[0006] a guide plate, which is protrudingly arranged forward from the main body shell;

[0007] a saw chain, which is tensioned and arranged on the outer periphery of the guide plate;

[0008] an electric motor, which is arranged in the main body shell and rotates the saw chain along the outer periphery of the guide plate;

[0009] a handle, which has a holding part for a worker to hold; and

[0010] first and second battery packs, which are respectively assembled on the main body shell in a detachable manner and are adapted to supply power to the electric motor;

[0011] The utility model is characterized in that the first and second battery packs are arranged in parallel along the axis direction in which the first and second battery packs protrude and extend forward along the guide plate.

[0012] The bottom of the first battery pack and the bottom of the second battery pack do not protrude from the bottom of the main body shell; or

[0013] The bottom of the first battery pack and the bottom of the second battery pack protrude from the bottom of the main body shell, so that the bottom of the first battery pack and the bottom of the second battery pack jointly form a horizontal support part of the chain saw.

[0014] Further, the second battery pack is closer to the electric motor, and a projection of the electric motor and the second battery pack on a horizontal support surface at least partially overlaps.

[0015] Further, when the chain saw is viewed from the rear in a state where the chain saw is placed on a horizontal support surface, a projection of the first battery pack and / or the second battery pack and a transmission gear of a transmission case on a plane perpendicular to the horizontal support surface at least partially overlaps.

[0016] Further, when the chain saw is viewed from above in a state where the chain saw is placed on a horizontal support surface, a projection of the electric motor and the transmission gear of the transmission case on the horizontal support surface at least partially overlaps.

[0017] Compared with the prior art, the technical scheme of the utility model has the beneficial technical effects that:

[0018] When the bottom of the first battery pack and the second battery pack does not protrude from the bottom of the main body shell, the regularity of the appearance of the bottom of the chain saw can be maintained, and in the case of placing the chain saw, stable support can be achieved by the main body shell contacting the placing plane, which is suitable for conventional use scenarios and has a simple overall structure.

[0019] If the bottom of the first battery pack and the second battery pack protrudes from the bottom of the main body shell, the bottom of the two forms a horizontal support part of the chain saw, which additionally increases the contact area of the chain saw and the horizontal support surface, so that the chain saw can be placed more stably, especially when placed on some uneven work surfaces, which can reduce shaking, tilting, and other situations, providing a reliable basis for stable placement of the chain saw and preparation before subsequent operation, and further ensuring stability during use.

[0020] The application provides another double-pack chain saw, which comprises:

[0021] a main body shell;

[0022] a guide plate protruding forward from the main body shell;

[0023] a saw chain tightly arranged around the guide plate;

[0024] an electric motor arranged in the main body shell to rotate the saw chain around the guide plate;

[0025] a handle having a gripping part for an operator to hold; and

[0026] a first battery pack and a second battery pack assembled to the main body shell in a detachable manner and adapted to supply power to the electric motor;

[0027] The first battery pack and the second battery pack are arranged in parallel along the axis direction in which the guide plate protrudes forward.

[0028] When the chain saw is placed on a horizontal support surface and viewed from above, the projection of the holding part of the handle on the horizontal support surface at least partially overlaps the projection of the first battery pack and / or the second battery pack on the horizontal support surface.

[0029] Further, the second battery pack is closer to the electric motor.

[0030] The projection of the holding part of the handle on the horizontal support surface covers the projection area of the first battery pack on the horizontal support surface and partially covers the projection area of the second battery pack on the horizontal support surface.

[0031] Further, when the chain saw is viewed from above in the state of being placed on a horizontal support surface, the projection of the electric motor on the horizontal support surface at least partially overlaps the projection of the second battery pack on the horizontal support surface.

[0032] Further, the battery mounting portion configured at the bottom of the main body shell is closed toward the bottom direction, so that in the state of the chain saw being placed on a horizontal support surface, the battery pack is prevented from contacting the horizontal support surface.

[0033] Further, the battery mounting portion includes an electric connection port and a mounting cavity for accommodating the battery pack.

[0034] Further, a gearbox is further included, which is connected to the electric motor.

[0035] A power output portion is formed with an output shaft and connected to the gearbox to drive the saw chain.

[0036] When the chain saw is viewed from the side in the state of being placed on a horizontal support surface, the line connecting the axis center of the output shaft of the electric motor and the axis center of the output shaft of the power output portion is arranged at an angle with the extension axis in which the guide plate protrudes forward.

[0037] Compared with the prior art, the beneficial technical effects of the technical scheme of the utility model are as follows:

[0038] The first battery pack and the second battery pack are arranged in parallel along the axis direction in which the guide plate protrudes forward, so that the layout of the battery packs is more regular and orderly. Meanwhile, the projection of the holding part of the handle on the horizontal support surface at least partially overlaps the projection of the first battery pack and / or the second battery pack on the horizontal support surface. Such a design accommodates multiple important components without additionally increasing the overall planar space occupied by the chain saw, further optimizes the layout of the components of the chain saw on the horizontal plane, and makes the overall structure of the chain saw more compact, which helps to reduce the overall size of the chain saw and facilitates carrying, storage and operation in different working environments. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0040] Figure 1 Structure schematic diagram of specific embodiment 1 of the present application;

[0041] Figure 2 Projection relationship schematic diagram of electric motor and battery pack of specific embodiment 1 of the present application;

[0042] Figure 3 Projection relationship schematic diagram of electric motor, battery pack and transmission gear of specific embodiment 1 of the present application;

[0043] Figure 4 Structure schematic diagram of part of specific embodiment 1 of the present application;

[0044] Figure 5 Structure schematic diagram of specific embodiment 2 of the present application;

[0045] Figure 6 Projection relationship schematic diagram of electric motor and battery pack of specific embodiment 2 of the present application;

[0046] Figure 7 Projection relationship schematic diagram of electric motor, battery pack and transmission gear of specific embodiment 2 of the present application;

[0047] Figure 8 Structure schematic diagram of specific embodiment 3 of the present application;

[0048] Figure 9 Projection relationship schematic diagram of electric motor, holding part and battery pack of specific embodiment 3 of the present application;

[0049] Figure 10 Structure schematic diagram of specific embodiment of the present application with battery pack bottom as support part structure;

[0050] Figure 11 Structure schematic diagram one of specific embodiment 4 of the present application;

[0051] Figure 12 Structure schematic diagram two of specific embodiment 4 of the present application;

[0052] Figure 13 Structure schematic diagram three of specific embodiment 4 of the present application; DETAILED DESCRIPTION

[0053] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0054] [Embodiment 1]

[0055] Referring to Figs. 1 and 2, a chain saw 100 includes: Figure 1 Figure 2 a main body case 10;

[0056] a guide plate 20 protruding forward from the main body case 10;

[0057] a saw chain 30 tensioned around the outer periphery of the guide plate 20;

[0058] an electric motor 40 provided in the main body case 10 to rotate the saw chain 30 along the outer periphery of the guide plate 20;

[0059] a handle 50 having a grip portion 50a for a worker to hold; and

[0060] a battery pack 60 assembled to the main body case 10 in a detachable manner, adapted to supply power to the electric motor 40.

[0061] In this embodiment 1, the battery pack 60 is one.

[0062] Referring to Figs. 1 and 2, when the chain saw 100 is viewed from above in a state where the chain saw 100 is placed on a horizontal support surface S, a projection area of the electric motor 40 on the horizontal support surface S is indicated by S2, and a projection area of the battery pack 60 on the horizontal support surface S is indicated by S1. The projection area S2 and the projection area S1 at least partially overlap each other, and the overlapping area is indicated by a hatched area.

[0063] In this embodiment 1, the battery pack 60 is one.

[0064] Referring to Figs. 1 and 2, when the chain saw 100 is viewed from above in a state where the chain saw 100 is placed on a horizontal support surface S, a projection area of the electric motor 40 on the horizontal support surface S is indicated by S2, and a projection area of the battery pack 60 on the horizontal support surface S is indicated by S1. The projection area S2 and the projection area S1 at least partially overlap each other, and the overlapping area is indicated by a hatched area. Figure 2

[0065] ​​In this way, the battery pack 60 is closer to the front end of the chain saw 100, so that the center of gravity of the chain saw 100 is further offset towards the front end. When the user operates the chain saw 100 to perform a cutting operation, the chain saw 100 is inclined downward and forward due to the further offset of the center of gravity of the chain saw 100 towards the front end. Therefore, the user can perform the cutting operation more easily and conveniently.

[0066] Please continue to refer to Figure 1 and Figure 2 , and in combination with Figure 4 , the electric motor 40 is arranged above the battery pack 60.

[0067] Further, please continue to refer to Figure 1 , Figure 2 and Figure 4 , the chain saw 100 further comprises:

[0068] a gearbox 70 connected to the electric motor 40;

[0069] a power output 80 formed with an output shaft and connected to the gearbox 70 to drive the saw chain 30;

[0070] When the chain saw 100 is placed on a horizontal support surface S and viewed from the side, the line L1 connecting the axis of the output shaft of the electric motor 40 and the axis of the output shaft of the power output 80 is arranged at an included angle β with the extension axis L2 of the deflector 20 protruding forward.

[0071] Specifically, the gearbox 70 comprises an output gear 70a and a transmission gear 70b, the output shaft of the electric motor 40 is connected to the output gear 70a in the gearbox 70, the output gear 70a is engaged with the transmission gear 70b, and the transmission gear 70b is connected to the output shaft of the power output 80. When the electric motor 40 rotates, the transmission gear 70b engaged with the output gear 70a is driven to rotate, and the output shaft of the power output 80 is driven to rotate, thereby driving the saw chain 30.

[0072] Referring to Figure 2 , the included angle β is obtuse.

[0073] Further, referring to Figure 3 , when the chain saw 100 is placed on a horizontal support surface S and viewed from above, the projection of the electric motor 40 and the transmission gear 70b of the gearbox 70 on the horizontal support surface S at least partially overlaps.

[0074] Specifically, the projection area of the electric motor 40 on the horizontal support surface S is shown as S2, the projection area of the transmission gear 70b of the gearbox 70 on the horizontal support surface S is shown as S4, the projection area S2 and the projection area S4 at least partially overlap, and the overlapping area is shown as a shaded area.

[0075] In addition, when the chain saw 100 is placed on the horizontal support surface S and viewed from the rear, the projection of the battery pack 60 and the transmission gear 70b of the gearbox 70 on a plane perpendicular to the horizontal support surface S at least partially overlap.

[0076] Specifically, the projection area of the battery pack 60 on a plane perpendicular to the horizontal support surface S is shown as H2, the projection area of the transmission gear 70b of the gearbox 70 on a plane perpendicular to the horizontal support surface S is shown as H1, the projection area H2 and the projection area H1 at least partially overlap, and the overlapping area is shown as a shaded area.

[0077] In this way, while ensuring that the center of gravity of the chain saw 100 is further offset towards the front end, the structural layout is more compact, reducing the volume of the chain saw.

[0078] Further, with reference to Figure 2 and Figure 4 , the guide plate 20 protrudes forward to form a first axis direction, as shown by the extension axis L2, and the battery pack 60 is assembled and disassembled to the main body shell 10 along a second axis direction M, the first axis direction L2 and the second axis direction M are perpendicular or obliquely intersected, so that the user can plug in and pull out the battery pack 60 at a more convenient angle, and the battery pack 60 will not affect the user's grip.

[0079] Further, the bottom of the main body shell 10 is provided with a battery mounting portion 90, which is open towards the bottom direction, and when the battery pack 60 is assembled in the battery mounting portion 90, the bottom of the battery pack 60 is at least partially exposed.

[0080]

Embodiment 2

[0081] This embodiment 2 is basically similar to the structure and principle of the above-mentioned embodiment 1, the difference is that the battery pack 60 of this embodiment 2 is 2, including a first battery pack 60a and a second battery pack 60b.

[0082] With reference to Figure 5 , Figure 6 and Figure 7 , the battery pack 60 includes a first battery pack 60a and a second battery pack 60b arranged in parallel along the axis direction of the protruding extension of the guide plate 20 forward, and the bottom of the first battery pack 60 and the second battery pack 60 does not protrude from the bottom of the main body shell 10.

[0083] Of course, the bottom of the first battery pack 60 and the second battery pack 60 can also protrude from the bottom of the main body case 10 to collectively constitute a horizontal support portion of the chain saw 100 by the bottom of the first battery pack 60 and the bottom of the second battery pack 60, as shown in Figure 10 .

[0084] Further, with reference to Figure 6 , when the chain saw 100 is viewed from above in a state where the chain saw 100 is placed on a horizontal support surface S, the grip portion 50a of the handle 50 does not coincide with the projection of the battery pack 60 on the horizontal support surface S.

[0085] Specifically, the projection area of the grip portion 50a of the handle 50 on the horizontal support surface S is shown as S3, the projection areas of the first battery pack 60a and the second battery pack 60b on the horizontal support surface S are shown as Sla and Slb, respectively, and the projection area S3 does not coincide with the projection areas Sla, Slb.

[0086] Further, the second battery pack 60b is closer to the electric motor 40, and the projection of the electric motor 40 and the second battery pack 60b on the horizontal support surface S at least partially overlaps.

[0087] Specifically, the projection area of the electric motor 40 on the horizontal support surface S is shown as S2, the projection area of the second battery pack 60b on the horizontal support surface S is shown as Slb, and the projection area S2 partially overlaps the projection area Slb, as shown in the hatched portion in Figure 6 .

[0088] Further, with reference to Figure 7 , when the chain saw 100 is viewed from behind in a state where the chain saw 100 is placed on a horizontal support surface S, the projection of the battery pack 60 and the transmission gear 70b of the transmission case 70 on a surface perpendicular to the horizontal support surface S at least partially overlaps.

[0089] Specifically, the projection area of the battery pack 60 on a surface perpendicular to the horizontal support surface S is shown as H2, the projection area of the transmission gear 70b of the transmission case 70 on a surface perpendicular to the horizontal support surface S is shown as HI, and the projection area H2 at least partially overlaps the projection area HI, as shown in the hatched area.

[0090] With reference to Figure 7 , when the chain saw 100 is viewed from above in a state where the chain saw 100 is placed on a horizontal support surface S, the projection of the electric motor 40 and the transmission gear 70b of the transmission case 70 on the horizontal support surface S at least partially overlaps.

[0091] Specifically, the projected area of the electric motor 40 on the horizontal support surface S is shown as S2, the projected area of the transmission gear 70b of the gearbox 70 on the horizontal support surface S is shown as S4, the projected area S2 at least partially overlaps the projected area S4, and the overlapping area is shown as S3. Figure 7 The shadow area is shown in the figure.

[0092] [Example 3]

[0093] This example 3 is basically similar to the structure and principle of the above-mentioned examples 1 and 2, and the difference is that when the chain saw 100 is placed on the horizontal support surface S and observed from above, the holding part 50a of the handle 50 and the battery pack 60 at least partially coincide on the horizontal support surface S.

[0094] Specifically, as shown in Figure 8 and Figure 9 , when the chain saw 100 is placed on the horizontal support surface S and observed from above, the projected area of the holding part 50a of the handle 50 on the horizontal support surface S is shown as S3, the projected areas of the first battery pack 60a and the second battery pack 60b on the horizontal support surface S are shown as S1a and S1b respectively, and the projected area S3 at least partially overlaps the projected areas S1a and S1b.

[0095] Further, the holding part 50a of the handle 50 and the first battery pack 60a at least partially coincide on the horizontal support surface S, and more optionally, the projected area S3 of the holding part 50a of the handle 50 on the horizontal support surface S covers the projected area S1a of the first battery pack 60a on the horizontal support surface S, and partially covers the projected area S1b of the second battery pack 60b on the horizontal support surface S.

[0096] When the chain saw 100 provided by the utility model is observed from above in the state of being placed on the horizontal support surface S, the electric motor 40 and at least one battery pack 60 at least partially overlap on the horizontal support surface S, so that the battery pack 60 is closer to the front end of the chain saw 100, so that the center of gravity of the chain saw 100 is further offset towards the front end, so that the user can use and operate conveniently.

[0097] [Example 4]

[0098] This example 4 is basically similar to the structure and principle of the above-mentioned examples 1, 2 and 3, and the difference is that the battery mounting part 90 configured at the bottom of the main body shell 10 is closed towards the bottom direction, so as to ensure that when the battery pack 60 is loaded into the battery mounting part 90 in the state of the chain saw 100 being placed on the horizontal support surface S, the battery pack 60 is prevented from contacting the horizontal support surface S.

[0099] Specifically, as shown in Figure 11 , Figure 12 and Figure 13As shown, the battery mounting portion 90 comprises an electrical connection port 90a, and a mounting cavity 90b for accommodating the battery pack 60, when the battery pack 60 is mounted in the mounting cavity 90b, the discharge break of the battery pack 60 is inserted with the electrical connection port 90a.

[0100] In addition, it also needs to be further explained that: the above-mentioned battery pack 60, containing the first battery pack 60a and the second battery pack 60b can be directly detachably connected with the main body shell, and can also be connected with the main body shell through the adapter, those skilled in the art should know that whether the battery pack is directly detachably assembled with the main body shell or connected with the main body shell through the adapter should be within the protection scope of the utility model.

[0101] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the utility model examples.

Claims

1. A double-chained saw comprising: a main body housing; a guide plate protruding forward from the main body housing; a saw chain tensioned around the outer circumference of the guide plate; an electric motor provided in the main body housing to rotate the saw chain along the outer circumference of the guide plate; a handle having a grip portion for a worker to hold; and a first battery pack and a second battery pack respectively assembled to the main body housing in a detachable manner to supply power to the electric motor, characterized in that the first battery pack and the second battery pack are arranged in parallel along the axis direction in which the guide plate protrudes forward; and the bottom of the first battery pack and the second battery pack do not protrude from the bottom of the main body housing; or the bottom of the first battery pack and the second battery pack protrude from the bottom of the main body housing to form a horizontal support portion of the chain saw together.

2. The double-chained saw according to claim 1, characterized in that: the second battery pack is closer to the electric motor, and a projection of the electric motor and the second battery pack on a horizontal support surface at least partially overlaps.

3. The double-chained saw according to claim 1 or 2, characterized in that: when the chain saw is viewed from the rear in a state in which the chain saw is placed on a horizontal support surface, a projection of the first battery pack and / or the second battery pack and a transmission gear of a transmission case on a surface perpendicular to the horizontal support surface at least partially overlaps.

4. The double-chained saw according to claim 3, characterized in that: when the chain saw is viewed from above in a state in which the chain saw is placed on a horizontal support surface, a projection of the electric motor and the transmission gear of the transmission case on the horizontal support surface at least partially overlaps.

5. A double-chained saw comprising: a main body housing; a guide plate protruding forward from the main body housing; a saw chain tensioned around the outer circumference of the guide plate; an electric motor provided in the main body housing to rotate the saw chain along the outer circumference of the guide plate; a handle having a grip portion for a worker to hold; and a first battery pack and a second battery pack respectively assembled to the main body housing in a detachable manner to supply power to the electric motor, characterized in that the first battery pack and the second battery pack are arranged in parallel along the axis direction in which the guide plate protrudes forward; and when the chain saw is viewed from above in a state in which the chain saw is placed on a horizontal support surface, a projection of the grip portion of the handle and the first battery pack and / or the second battery pack on the horizontal support surface at least partially overlaps.

6. The double-chained saw according to claim 5, characterized in that: the second battery pack is closer to the electric motor; and a projection of the grip portion of the handle on the horizontal support surface covers a projection area of the first battery pack on the horizontal support surface and partially covers a projection area of the second battery pack on the horizontal support surface.

7. The double-chained saw according to claim 5 or 6, characterized in that: when the chain saw is viewed from above in a state in which the chain saw is placed on a horizontal support surface, a projection of the electric motor and the second battery pack on the horizontal support surface at least partially overlaps. ​ ​ 8. The dual chain saw according to claim 7, wherein: the bottom portion of the main body housing is configured to have a closed shape in the direction of the bottom portion so that the battery pack is prevented from coming into contact with a horizontal support surface when the chain saw is placed on the horizontal support surface.

9. The dual chain saw according to claim 8, wherein: the battery mounting portion includes an electrical connection port and a mounting cavity for accommodating the battery pack.

10. The dual chain saw of claim 7 wherein, Further comprising: a gearbox connected to the electric motor; a power output portion formed with an output shaft and connected to the gearbox to drive the chain saw; when the chain saw is viewed from the side in a state where the chain saw is placed on a horizontal support surface, a line connecting the center of the output shaft of the electric motor and the center of the output shaft of the power output portion is disposed at an angle with respect to an extension axis of the guide plate protruding in the forward direction.

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