CN213471505U

CN213471505U - Chain saw

Info

Publication number: CN213471505U
Application number: CN202021892478.7U
Authority: CN
Inventors: 山冈敏成; 徐轩
Original assignee: Nanjing Deshuo Industrial Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-06-18
Anticipated expiration: 2030-09-02

Abstract

The utility model discloses a chain saw, include: a housing extending substantially in a front-rear direction and formed with an accommodating space; a guide plate mounted to the cabinet; a chain mounted to the guide plate and configured to rotate around the guide plate; the power supply assembly is arranged on the rear side of the shell; the casing further comprises a lower bottom surface perpendicular to the up-down direction, the lower bottom surface extending substantially in a plane, the casing further being recessed to a side away from the lower bottom surface to form a hook, the hook being disposed in a space between the lower bottom surface and the casing. The chain saw has a compact structure and is convenient to operate and use.

Description

Chain saw

Technical Field

The utility model relates to a garden instrument, concretely relates to chain saw.

Background

A chainsaw is a garden tool that can be operated by a user to cut a workpiece. In the case of a chain saw, a chain is driven by a motor to rotate to cut a workpiece such as wood, which is generally used for outdoor cutting. The user is constantly in the adjusted position while operating the chain saw, which requires the chain saw to be stowed or attached to a harness or other connector. And the large volume of the chain saw when hung or stowed on the user can have a large effect on the user's movements. How to provide a chain saw convenient to hang or store is a technical problem to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

For solving the not enough of prior art, the utility model aims to provide a chain saw that can conveniently accomodate.

In order to achieve the above object, the utility model adopts the following technical scheme:

a chain saw, comprising: a housing extending substantially in a front-rear direction and formed with an accommodating space; a guide plate mounted to the cabinet; a chain mounted to the guide plate and configured to rotate around the guide plate; the power supply assembly is arranged on the rear side of the shell; the casing further comprises a lower bottom surface perpendicular to the up-down direction, the lower bottom surface extending substantially in a plane, the casing further being recessed to a side away from the lower bottom surface to form a hook, the hook being disposed in a space between the lower bottom surface and the casing.

Further, the casing is also formed with a recess, and the hook is at least partially located in the recess.

Further, the hook is arranged towards the front end where the chain is located.

Further, the case is formed with a coupling portion to which the power supply module is mounted; the chassis is also formed with a guide groove that guides the power supply module to be mounted to the coupling portion.

Further, the guide groove extends in a left-right direction perpendicular to the front-rear direction, and the power module is mounted to the coupling portion from the left side or the rear side of the housing.

Further, the casing includes a first casing and a second casing, and the guide groove is provided on the first casing or the second casing.

Further, the casing includes a first casing and a second casing, and the guide groove is provided on both the first casing and the second casing.

Furthermore, the casing is connected or formed with 2 or more and 6 or less protection panels, and the protection panels are formed with accommodating cavities for protecting the power supply components.

Further, the housing is formed with a main handle attached thereto, and the center of gravity of the chain saw machine is located substantially near the main handle in the front-rear direction.

Further, the housing includes a first housing and a second housing, the first housing and the second housing being substantially symmetrical and joined to form the housing, the center of gravity of the chain saw being located at a junction of the first housing and the second housing

The utility model discloses an useful part lies in: through setting up the couple sunken to casing inside for the chain saw is convenient for accomodate or hang, and to not producing other influences, is convenient for operate and use.

Drawings

FIG. 1 is a perspective view of a chain saw;

FIG. 2 is a perspective view of another perspective of the chain saw of FIG. 1;

FIG. 3 is a cross-sectional view of the chain saw of FIG. 1;

FIG. 4 is a perspective view of the chain saw of FIG. 1 with a portion of the housing removed;

FIG. 5 is a perspective view of the chain saw of FIG. 4 from another perspective with a portion of the housing removed;

FIG. 6 is a bottom view of the chain saw of FIG. 1;

FIG. 7 is a perspective view of the chain saw of FIG. 1 with the oil can removed;

fig. 8 is a perspective view of the power supply assembly of the chain saw of fig. 1 separated from the housing.

Detailed Description

The chainsaw 100 shown in fig. 1 to 2 includes: a casing 11, a chain 12, a guide plate 13, a locking mechanism 14 and a power supply assembly 15. Wherein the guide plate 13 is used for guiding the chain 12, and the chain 12 rotates around the guide plate 13. The locking device is installed to the junction of the guide plate 13 and the cabinet 11, and is detachably coupled to the cabinet 11. The locking device is used to secure the shoe 13 and tension the chain 12. A power supply assembly 15 is connected to the housing for supplying power to the chainsaw 100. Specifically, the housing 11 is formed with a coupling portion 11d for coupling the chainsaw 100, and the power supply module 15 is mounted to the coupling portion 11 d. The housing 11 is further formed or connected with a main handle 11a, and an auxiliary handle 11b is further formed or connected to a front side of the main handle 11 a. The main handle 11a includes a main grip portion to be gripped by a user, and the auxiliary handle 11b is provided with an auxiliary grip portion to be gripped by a user. A control system 19 is connected to the main handle 11a and the user controls the power output of the chainsaw 100. The auxiliary handle 11b is used for a user to carry to operate the chain saw 100 in cooperation with the main handle 11 a.

For the clear explanation of the technical solution of the present invention, the following is also defined as shown in fig. 1: upper, lower, front, rear, left and right directions. The guide plates 13 are substantially distributed in the front-rear direction. The main handle 11a is disposed at the rear side of the housing, and the auxiliary handle 11b is disposed at the front side of the main handle 11a while being located at the upper side of the housing. The front side of the auxiliary handle 11b is also provided with a guard for protecting a user from being cut by the chain 12 due to backlash when operating the chain saw 100.

As shown in fig. 3-6, the chainsaw 100 further includes an oil pumping system 16, a braking system, a drive train 17, and a power train 18. The oil pumping system 16, the brake system, the transmission system 17, the control system 19, the power system 18, and the power module 15 are arranged in this order in the front-rear direction. In fact, the housing 11 is formed with a first accommodation space 111, and the pumping system 16, the braking system, the transmission system 17, the control system 19, and the power system 18 are at least partially disposed in the first accommodation space 111. Specifically, the pumping system 16 is disposed on the front side of a portion of the casing 11, the power module 15 is disposed on the rear side of the casing 11, and the transmission system 17 and the power module 18 are disposed between the pumping system 16 and the power module 15. By such a design, the width of the whole chainsaw 100 in the left-right direction can be set to 150mm or less; in some preferred embodiments, the width of the chainsaw 100 in the left-right direction can be set to 127mm or less. Further, with the arrangement as described above, the length of the whole chainsaw 100 in the front-rear direction can be set to 330mm or less; in some preferred embodiments, the length of the chain saw 100 in the front-rear direction can be set to 305mm or less. This allows the chain saw 100 to be very compact, lighter, and easier to operate and use.

As shown in fig. 7, the oil pumping system 16 includes an oil can 161 and an oil pump, which is provided to connect the transmission system 17 and the oil can 161 and is capable of pumping oil in the oil can 161 to the guide plate 13 or the chain 12 of the chain saw 100. As one implementation, a portion of the cabinet 11 connected to the right position at the front position is provided with an opening 112, and the oil can 161 is disposed in the cabinet 11 and closes at least the opening 112. The opening 112 is provided to communicate with the outside in both the front-rear direction and the left-right direction of the cabinet 11, so that the oilcan 161 provided therein can be viewed from both the front-rear direction or the left-right direction. In fact, in a rectangular coordinate system intersecting the front-back direction and the left-right direction, the coordinate system includes four quadrants, the opening 112 is disposed in one of the quadrants, and the opening 112 can be observed within 90 ° of the quadrant. Further, the oil can 161 is also exposed to 90 ° of the quadrant of the opening 112 in the up-down direction. This allows the amount of oil in the oil can 161 to be exposed to a visible range of view on both the front and right sides, thereby providing a better visual appearance to the oil can 161. In fact, the amount of oil in the oil can 161 can be easily observed either while the chain saw 100 is being operated or while the chain saw 100 is being placed, thereby greatly optimizing the operating experience of the chain saw 100 and eliminating the need for the user to stop or deliberately look for a visual angle to observe the amount of oil in the oil can 161. With such an arrangement, the window of the oil can 161 is enlarged, and the user can more easily observe the position of the oil surface in the oil can 161.

As shown in fig. 1 to 3, the housing 11 is further connected to or formed with a hook 113 configured to allow the chainsaw 100 to be hung. Specifically, the cabinet 11 includes a lower bottom surface extending in a plane perpendicular to the up-down direction. In the up-down direction, the cabinet 11 further includes a recessed portion 114 recessed upward from the bottom surface, and the recessed portion 114 is further recessed rearward at a position away from the bottom surface, so that the cabinet 11 itself forms the hook 113. Further, the hook 113 is provided toward the front side of the chain 12 so that the chain 12 is downward and the housing 11 is upward when the chainsaw 100 is suspended. Therefore, when the chain saw 100 falls down due to misoperation or the like, the housing 11 is positioned on the side away from the ground, and damage to the housing 11 is avoided. In the present embodiment, the hook 113 is formed by the housing itself, on one hand, avoiding additional installation openings or installation accessories; on the other hand, the hook 113 is disposed above the plane of the lower bottom surface, so that the hook 113 does not protrude from the lower bottom surface of the entire chainsaw 100, and the size of the entire chainsaw 100 in the vertical direction is not increased, so that the entire chainsaw 100 is more compact.

As shown in fig. 3 to 6, in the present embodiment, the power system 18 includes an electric motor 181, and the electric motor 181 is specifically configured as an external rotor electric motor 181. The external rotor motor 181 adopts a small-sized, high-energy power density motor 181, and the rotation speed thereof is set to 18000 r/min or more and 45000 r/min or less. More specifically, the rotation speed of the outer rotor motor 181 is set to 26000r/min or more and 35000 r/min or less. In the present embodiment, the external rotor motor 181 is set to 0.16KG or more and 0.65KG or less, and the mass of the whole chainsaw 100 not including the power supply module 15 is set to 2.0KG or more and 4KG or less. The ratio of the mass of the outer rotor motor 181 to the mass of the entire chain saw 100 is 0.07 to 0.4. By providing such a motor 181, on the one hand, the space occupied by the motor 181 in the first accommodation space 111 can be effectively reduced, and the overall size of the chainsaw 100 can be reduced; on the other hand, the chainsaw 100 can be ensured to have higher power output, and the chainsaw 100 can be ensured to have higher cutting efficiency. As one implementation, the transmission system 17 includes an output shaft 171 and a tertiary gear 172 for transmission. Specifically, the tertiary gear 172 includes a first stage gear 172a, a second stage gear 172b, and a third stage gear 172 c. The output shaft 171 is connected to the first stage gear 172a, the motor shaft 181a is connected to the third stage gear 172c, and the second stage gear 172b is connected to the first stage gear 172a and the third stage gear 172 c. By providing the three-stage gear 172 for transmission, the distance between the motor shaft 181a and the driving shaft for driving the chain 12 to rotate can be effectively increased, so that the motor shaft 181a is far away from the debris discharge space 142 of the chain saw 100. In fact, the transmission system 17 can also be provided with a two-stage gear transmission or a multi-stage gear transmission, which is not described in detail here. Specifically, the locking device further includes a cover plate 141 that encloses at least a portion of the chain 12 and the guide plate 13. A driving shaft is protruded from the first receiving space 111 of the housing 11, and a driving wheel is provided on the driving shaft, and the chain 12 is caught on the driving wheel and can be driven by the driving wheel to rotate around the guide plate 13. During the cutting of the workpiece by the chain 12, a large amount of chips are generated, and a part of the chips rotates to the vicinity of the driving wheel along with the chain 12 and falls off in the vicinity of the driving wheel. In fact, when the cover plate 141 closes at least part of the chain 12 and the guide plate 13, a chip discharging space 142 is formed by cooperation with the housing 11, the chip discharging space 142 occupies most of the space of the cover plate 141 in the front-rear direction, and the chip discharging space 142 is further formed with a chip discharging port 143 downward, so that the chips following the rotation of the chain 12 to the vicinity of the driving wheel fall out of the chip discharging space 142. In order to make the chip discharge space 142 larger, the chip discharge port 143 wider, and to make the chip discharge effect better, and to avoid the chain saw 100 from being locked, the motor shaft 181a is disposed at the rear side away from the chip discharge space 142 in the front-rear direction. In addition, through the transmission of the third-level gear 172, the space of the transmission system 17 in the left-right direction of the housing 11 is also reduced, so that the space of the transmission system 17 in the left-right direction is effectively prevented from occupying the chip removal space 142, and the chip removal space 142 can be set to be larger and the chip removal effect is better on the premise that the chain saw 100 with the same volume and the chain saw 100 with better output power are provided. Further, the transmission system 17 includes a gear box 173 for accommodating at least part of the three-stage gear 172, and the gear box 173 is substantially distributed in the front-rear direction. In the left-right direction, the motor 181 and the output shaft 171 are simultaneously disposed on the same side of the gear case 173. In the present embodiment, the motor 181 and the output shaft 171 are simultaneously disposed on the right side of the gear case 173. In a predetermined linear direction passing through the up-down direction, the lowermost side of the output shaft 171 in the up-down direction includes a first plane perpendicular to the predetermined linear direction, and the uppermost side of the motor shaft 181a in the up-down direction includes a second plane perpendicular to the predetermined linear direction. Wherein the first plane is located at the upper side of the second plane, i.e. the motor shaft 181a and the output shaft 171 are also staggered in the up-down direction and located in two planes, thereby enabling the motor 181 to be further away from the debris discharge space 142.

The rear side of the cabinet 11 protrudes rightward to form a second receiving space 115, and the motor 181 is disposed in the second receiving space 115. The first accommodation space 111 and the second accommodation space 115 are at least partially in communication. More specifically, the right end face of the motor 181 is disposed to be positioned on the right side of the guide plate 13 of the chain 12. By such a color setting, it is possible to make the motor 181 occupy less second accommodation space in the left position on the one hand, and to ensure that the cover plate 141 is in substantially the same flush position with the cabinet 11 in the front-rear direction when the cover plate 141 is mounted to the cabinet.

As shown in fig. 2, the portion of the housing 11 forming the second accommodating space 115 further includes a movable outlet 116. The outlet 116 is disposed on an outer surface of the housing 11, and the outlet 116 is configured to be rotatable or retractable in a predetermined direction, so as to adjust a blowing direction of the cooling air of the motor 181. Specifically, the outlet 116 includes a first blowing direction and a second blowing direction. When the air outlet 116 is adjusted to the first blowing direction, the air outlet 116 can blow forward, so that the chips discharged from the chip removing port 143 can be blown forward, and the chips are prevented from falling onto the user. When the outlet 116 is adjusted to the second blowing direction, the outlet 116 can blow air backward, so that air can be blown to the power supply module 15 disposed on the rear side of the casing 11 to cool the power supply module 15.

As shown in fig. 3 to 5, in the present embodiment, the control system 19 includes a circuit board assembly 191 disposed in the first receiving space 111, and the circuit board assembly 191 extends in a plane. The circuit board assembly 191 is disposed obliquely in the first receiving space 111. Specifically, the circuit board assembly 191 obliquely intersects a first straight line 101 extending in the front-rear direction and has a predetermined angle. It will be appreciated that the circuit board assembly 191 takes full advantage of the slanted space, as the drive train 17 occupies progressively less space from front to back, i.e. the gap between the drive train 17 and the cabinet 11 is slanted. Further, the circuit board assembly 191 is provided to overlap the motor 181 and the gear case 173 in the vertical direction, and to overlap the power supply assembly 15 in the front-rear direction. In a second straight line 102 direction perpendicular to the first straight line 101 direction and extending in the up-down direction, the motor 181 has a projection plane perpendicular to the second straight line 102 direction along the second straight line 102 direction, and the circuit board assembly 191 has a projection plane perpendicular to the second straight line 102 direction along the second straight line 102 direction; the projection surface of the motor 181 along the second line 102 direction is at least partially overlapped with the projection surface of the circuit board assembly 191 along the second line 102 direction; the transmission system 17 has a projection plane perpendicular to the direction of the second line 102 along the direction of the second line 102, and the circuit board assembly 191 has a projection plane perpendicular to the direction of the second line 102 along the direction of the second line 102; the projection plane of the transmission system 17 along the direction of the second line 102 is at least partially overlapped with the projection plane of the circuit board assembly 191 along the direction of the second line 102; the power supply assembly 15 has a projection plane perpendicular to the first straight line 101 along the first straight line 101, and the circuit board assembly 191 has a projection plane perpendicular to the first straight line 101 along the first straight line 101; the projection plane of the power module 15 along the first line 101 at least partially coincides with the projection plane of the circuit board assembly 191 along the first line 101.

In order to ensure effective heat dissipation of the components in the inner space of the housing 11, an air inlet 117 is further disposed on the housing 11. In one implementation, the intake vent 117 is disposed on the left side of the cabinet 11 and is located substantially where the drive train 17 is located. When the chain saw 100 is operated, the motor 181 rotates to rotate the heat dissipating fan connected to the motor shaft 181a synchronously, so that a negative pressure is formed inside the housing 11, and the air flows into the housing 11 from the intake opening 117, flows through the gear box 173, the circuit board assembly 191 and the motor 181, and finally flows out from the outlet opening 116. In the process, because the circuit board assembly 191 is obliquely arranged inside the casing 11, and the circuit board assembly 191, the motor 181 and the gear box 173 are overlapped, the heat dissipation airflow can simultaneously flow through the circuit board assembly 191 and the gear box 173 and can fully flow through the circuit board assembly 191, so that the heat on the circuit board assembly 191 can be taken away to the maximum extent, and the heat dissipation efficiency of the circuit board assembly 191 is effectively increased.

In the present embodiment, the braking system is configured as an electronic brake, a control circuit of the electronic brake is provided in the circuit board assembly 191, and the motor 181 is braked by the counter electromotive force generated during the operation of the motor 181 when the motor 181 is stopped by the switch control. By providing the electronic brake, the space occupied by the mechanical brake is avoided, so that the housing 11 does not need to form a part for accommodating the mechanical brake assembly, and the whole chainsaw 100 is more compact.

In the present embodiment, the housing 11 includes two substantially symmetrically disposed first and

second housings

118 and 119, and the first and

second housings

118 and 119 are connected to form the complete housing 11 and form the first and second

accommodating spaces

111 and 115. With the above arrangement, the center of gravity of the chainsaw 100 in the present application can be located substantially at the junction of the first housing 118 and the second housing 119, that is, the center of gravity of the chainsaw 100 can be located substantially at the center of symmetry in the left-right direction of the entire machine and at the center line in the front-rear direction of the entire machine of the chainsaw 100. It should be noted that the chainsaw 100 is a whole body from which the guide plate 13 and the chainsaw 100 are removed. With the above arrangement, the center of gravity of the whole chainsaw 100 is located substantially near the main handle 11a, and when the chainsaw 100 is operated or placed, the chainsaw 100 does not topple or tilt, and the operation experience is excellent. Further, since the center of gravity of the chainsaw 100 as a whole is disposed near the main handle 11a, the user's wrist does not need to output an additional force for balancing the chainsaw 100 as the chainsaw 100 is being operated, and the user is very labor-saving in operating the chainsaw 100. In addition, after the upper guide plate 13 and the chain 12 are installed, the center of gravity of the whole chain saw 100 moves forward, so that the portion of the chain 12 of the chain saw 100 can automatically droop downward to be close to the workpiece, and thus, when the user operates the chain saw 100, the reaction force of the workpiece on the chain 12 can be effectively counteracted, and the user does not need to output large force to press the chain saw 100 to cut the workpiece in the cutting process.

As shown in fig. 8, in the present embodiment, the housing 11 further includes a guide groove 11c for guiding the mounting of the power supply module 15 to the coupling portion 11d, and the guide groove 11c is provided on a connection path of the power supply module 15 to the coupling portion 11 d. The guide groove 11c may be provided in the first housing 118 or the second housing 119, or may be provided in both the first housing 118 and the second housing 119. The guide groove 11c may be formed integrally with the housing 11, or may be provided separately on the housing 11. The guide grooves 11c are also distributed in the left-right direction, so that the power supply assembly 15 can be laterally and transversely inserted into the joint part 11d, the space on the lower side of the handle on the machine shell 11 can be fully utilized, and the battery pack can be conveniently operated by a user through transverse insertion and extraction. Further, since the housing 11 extends substantially in the front-rear direction, the power supply unit 15 is mounted to the coupling portion 11d from the side, so that the size of the chain saw 100 in the longitudinal direction can be reduced to some extent. After the power module 15 is connected to the combining portion 11d, the portion where the combining portion 11d is located and the portion on the rear side of the casing 11 form at least two surface packages for the power module 15, so that the battery pack can be effectively protected. Indeed, in some alternative embodiments, the housing 11 may also form a plurality of protective panels for mounting and protecting the power supply assembly 15. Specifically, the cabinet 11 may be connected or formed with 2 to 6 protection panels so as to form an accommodation chamber in which the power supply-possible unit 15 is accommodated.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A chain saw, comprising:

a housing extending substantially in a front-rear direction and formed with an accommodating space;

a guide plate mounted to the cabinet;

a chain mounted to the guide plate and configured to rotate around the guide plate;

the power supply assembly is arranged on the rear side of the shell;

it is characterized in that the preparation method is characterized in that,

the casing further comprises a lower bottom surface perpendicular to the up-down direction, the lower bottom surface extends substantially in a plane, the casing is further recessed to a side away from the lower bottom surface to form a hook, and the hook is arranged in a space between the lower bottom surface and the casing.

2. The chain saw of claim 1,

the casing is also formed with the depressed part, the couple is located at least partly in the depressed part.

3. The chain saw of claim 1,

the hook is arranged towards the front end of the chain.

4. The chain saw of claim 1,

the case is formed with a coupling portion to which the power supply component is mounted;

the case is further formed with a guide groove guiding the power supply module to be mounted to the coupling portion.

5. The chain saw of claim 4,

the guide groove extends in a left-right direction perpendicular to the front-rear direction, and the power supply module is mounted to the coupling portion from a left side or a rear side of the housing.

6. The chain saw of claim 4,

the casing comprises a first casing and a second casing, and the guide groove is arranged on the first casing or the second casing.

7. The chain saw of claim 4,

the casing comprises a first casing and a second casing, and the guide grooves are simultaneously arranged on the first casing and the second casing.

8. The chain saw of claim 1,

the casing is connected or formed with 2 or more and 6 or less protection panels, and the protection panels are formed with accommodating cavities for protecting the power supply components.

9. The chain saw of claim 1,

the housing is formed with a main handle attached thereto, and a center of gravity of the chain saw machine is located substantially near the main handle in a front-rear direction.

10. The chain saw of claim 1,

the housing includes a first housing and a second housing that are substantially symmetrical and joined to form the housing, and a center of gravity of the chain saw is located at a junction of the first housing and the second housing.