Chain saw

Abstract

The utility model discloses a chain saw which comprises a shell and a handle arranged on one end side of the shell. The shell is provided with an installation cavity, an air inlet and an air outlet, the installation cavity is configured to contain a motor assembly, the air inlet is configured to be arranged on the end side portion, close to the handle, of the shell, the air outlet is configured to be arranged on the lower end side portion of the installation cavity, and the shell further comprises a battery cavity. The mounting cavity is further provided with a first air duct located on the peripheral side of the battery cavity and close to one side of the air inlet, a second air duct located on the peripheral side of the battery cavity and a motor cavity located on the peripheral side of the battery cavity and facing one side of the second end of the shell, the first air duct communicates with the air inlet, and the second air duct communicates with the first air duct; the motor cavity is communicated with the second air channel, and the air outlet is communicated with the motor cavity. The saw has a good heat dissipation effect, so that the working efficiency of the chain saw is improved, and the continuous working time of the chain saw is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of power tools, and particularly relates to a chain saw. Background Art

[0002] A chain saw is a gardening tool that drives a chain on a guide plate to move through a power device to cut wood or branches. With the increasing maturity of lithium batteries, lithium battery tools are widely used in various industries, especially lithium battery brushless products are widely used in the power tool industry.

[0003] During the working process of the existing chain saw, a large amount of heat is generated, resulting in the inability of the motor in the chain saw to work for a long time, thus affecting the working efficiency and continuous working time of the chain saw.

[0004] The information disclosed in this background art section is only intended to enhance the overall understanding of the present utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a chain saw with good heat dissipation effect, improving the working efficiency and continuous working time of the chain saw.

[0006] To achieve the above purpose, the technical solution provided by a specific embodiment of the present utility model is as follows: A chain saw includes a housing and a handle disposed at one end side of the housing.

[0007] The housing is configured with an installation cavity, an air inlet and an air outlet. The installation cavity is configured to accommodate a motor assembly. The air inlet is disposed at the end side of the housing close to the handle. The air outlet is disposed at the lower end side of the installation cavity. The housing further includes a battery cavity. The installation cavity is further configured with a first air duct located on the side of the battery cavity close to the air inlet, a second air duct located on the periphery of the battery cavity, and a motor cavity located on the side of the battery cavity facing the second end of the housing. The first air duct is communicated with the air inlet, the second air duct is communicated with the first air duct, the motor cavity is communicated with the second air duct, the air outlet is communicated with the motor cavity, and the first air duct and the motor cavity are disposed on opposite sides of the battery cavity.

[0008] In one or more embodiments of the present utility model, a plurality of baffles are spaced apart at the air inlet, and two adjacent baffles define a first air inlet channel.

[0009] In one or more embodiments of the present utility model, along the direction from the outside to the inside of the air inlet, the baffles are inclined upward at the air inlet.

[0010] In one or more embodiments of the present utility model, a plurality of guiding plates corresponding to the baffle plates one by one are further provided at the air inlet, and two adjacent guiding plates define a second air inlet passage, and the first air inlet passage is communicated with the second air inlet passage.

[0011] In one or more embodiments of the present utility model, two air inlets are oppositely arranged in the horizontal direction at the first end of the housing, and the second air inlet passages of the two air inlets are oppositely arranged.

[0012] In one or more embodiments of the present utility model, the installation cavity further includes a dust collection cavity located below the first air duct, and the dust collection cavity is communicated with the first air duct.

[0013] In one or more embodiments of the present utility model, a discharge port communicated with the dust collection cavity is provided on the housing, a sealing member is covered at the discharge port, and the sealing member is detachably connected to the housing.

[0014] In one or more embodiments of the present utility model, the second air duct is arranged at the top end of the housing.

[0015] In one or more embodiments of the present utility model, the motor assembly includes a motor body, an air guide cover, and a wind blade arranged in the air guide cover. The motor body is connected to the wind blade, and the air guide cover is respectively communicated with the motor cavity and the air outlet.

[0016] In one or more embodiments of the present utility model, the chain saw further includes a battery pack detachably installed in the battery cavity and a controller installed in the second air duct. The controller is electrically connected to the motor assembly.

[0017] Compared with the prior art, the chain saw of the present utility model forms a gas duct through the successively communicated air inlet, first air duct, second air duct, motor cavity, and air outlet, so that the gas outside the chain saw can continuously enter the housing, achieving a good heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a partial internal view of the chain saw in an embodiment of the present utility model;

[0020] Figure 2 It is a partial schematic view of the chain saw in an embodiment of the present utility model;

[0021] Figure 3 This is a partial internal view of a chainsaw in an embodiment of the present utility model;

[0022] Figure 4 This is a partial sectional view of a chainsaw in an embodiment of the present utility model.

[0023] Description of main reference numerals:

[0024] 1. Housing; 11. Installation cavity; 111. First air duct; 112. Second air duct; 113. Motor cavity; 114. Dust collection cavity; 12. Air inlet; 121. First air inlet passage; 122. Second air inlet passage; 13. Air outlet; 14. Battery cavity; 15. Baffle; 16. Guide plate; 2. Motor assembly; 21. Motor body; 22. Air guide cover; 23. Blades; 3. Battery pack; 4. Controller; 5. Trigger; 6. Handle. Detailed implementation manners

[0025] In order to enable those skilled in the art of the present technology to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] As Figures 1 to 3 shown, a chainsaw in an embodiment of the present utility model includes a housing 1 and a handle 6 disposed on one end side of the housing 1; the housing 1 is configured with an installation cavity 11, an air inlet 12 and an air outlet 13. The installation cavity 11 is configured to accommodate the motor assembly 2. The air inlet 12 is disposed on the end side of the housing 1 close to the handle 6, and the air outlet 13 is disposed on the lower end side of the installation cavity 11. The housing 1 further includes a battery cavity 14. The installation cavity 11 is further configured with a first air duct 111 on the periphery of the battery cavity 14 and close to the air inlet 12 side, a second air duct 112 on the periphery of the battery cavity 14, and a motor cavity 113 on the periphery of the battery cavity 14 and facing the second end side of the housing 1. The first air duct 111 is communicated with the air inlet 12, the second air duct 112 is communicated with the first air duct 111, the motor cavity 113 is communicated with the second air duct 112, the air outlet 13 is communicated with the motor cavity 113, and the first air duct 111 and the motor cavity 113 are disposed on opposite sides of the battery cavity 14.

[0027] It can be understood that a gas duct is formed by the sequentially connected air inlet 12, the first air duct 111, the second air duct 112, the motor cavity 113 and the air outlet 13, so that the gas outside the chain saw can continuously enter the housing 1, achieving a good heat dissipation effect.

[0028] Optionally, the second air duct 112 is disposed at the top end of the housing 1, such as Figure 1 As shown, the second air duct 112 is located above the battery cavity 14. During actual use of the chain saw, a lot of debris will be generated, some of which will splash near the air inlet 12 and be sucked into the first air duct 111 by the air inlet 12. Since the second air duct 112 is located above the battery cavity 14, the debris entering the first air duct 111 will first move upward. Under the action of the gravity of the debris itself, most of the debris will not enter the second air duct 112 with the air flow in the first air duct 111, but will fall to the bottom (below) of the first air duct 111, thereby playing a dust-proof role and preventing the debris from entering the motor assembly 2 along the gas duct as much as possible to affect the normal operation of the motor body 21. Figure 3 The curve with an arrow (the curve without a number) can be regarded as the flow path of the gas.

[0029] like Figures 1 to 3 As shown, the chain saw also includes a battery pack 3 detachably mounted in the battery cavity 14. The chain saw also includes a controller 4 mounted in the second air duct 112, and the controller 4 is electrically connected to the motor assembly 2. The motor assembly 2 can be electrically connected to the battery pack 3. The controller 4 is mounted in the second air duct 112, which can play a role in cooling the controller 4. Figures 1 to 4 As can be seen from the figure, the housing 1 may include a first shell and a second shell connected to each other.

[0030] The chain saw also includes components such as a chain and a sprocket (not shown in the figure), which are installed on the end of the housing 1 away from the handle. A trigger 5 can also be installed on the handle 6, and the trigger 5 can be connected to the controller 4 to control the start and stop of the entire chain saw.

[0031] Specifically, the motor assembly 2 includes a motor body 21, an air guide cover 22, and a fan blade 23 disposed in the air guide cover 22. The motor body 21 is connected to the fan blade 23, and the air guide cover 22 is respectively connected to the motor cavity 113 and the air outlet 13. That is, the motor body 21 in the motor assembly 2 installed in the motor cavity 113 drives the fan blade 23 to rotate, generating a pressure difference, thereby generating gas flow in the gas duct, and the air guide cover 22 plays a role in guiding the air flow to the air outlet 13.

[0032] like Figure 4As shown, a number of baffles 15 are provided at intervals at the air inlet 12. Two adjacent baffles 15 define a first air inlet passage 121, that is, the baffles 15 divide the air inlet 12 into the first air inlet passages 121. Dividing one air inlet 12 into a number of first air inlet passages 121 serves to block particles, debris, etc. from entering the first air duct 111.

[0033] Further, along the direction from the outside to the inside of the air inlet 12, the baffles 15 are arranged to slope upward at the air inlet 12. Such an arrangement is to make the first air inlet passage 121 have a diagonally upward trend, thereby increasing the difficulty for particles, debris, etc. to enter the first air duct 111.

[0034] Further, a number of guide plates 16 corresponding to the baffles 15 one by one are also provided at the air inlet 12. Two adjacent guide plates 16 define a second air inlet passage 122, that is, the guide plates 16 divide the air inlet 12 into the second air inlet passages 122, and the first air inlet passages 121 are communicated with the second air inlet passages 122. The extending direction of the second air inlet passage 122 can be a horizontal direction or be horizontally downward along the direction from the outside to the inside of the air inlet 12. That is, the debris entering the first air inlet passage 121, even if it passes through the first air inlet passage 121, will hit the guide plate 16 under the drive of the air flow, thereby reducing the upward kinetic energy of particles, debris, etc., and making it easier for particles, debris, etc. to fall to the bottom direction of the first air duct 111.

[0035] It can be understood that the air inlet 12 can include the first air inlet passages 121 and the second air inlet passages 122. When the gas passes through the air inlet 12, it first passes through the first air inlet passages 121 and then through the second air inlet passages 122.

[0036] Further, two air inlets 12 are oppositely arranged in the horizontal direction at the rear end of the housing 1, and the second air inlet passages 122 of the two air inlets 12 are arranged oppositely. Such an arrangement is to make the particles, debris, etc. passing through the two second air inlet passages 122 collide with each other under the drive of the air flow, thereby offsetting the kinetic energy of the particles, debris, etc., and making it easier for particles, debris, etc. to fall to the bottom direction of the first air duct 111.

[0037] Specifically, the installation cavity 11 further includes a dust collection cavity 114 located below the first air duct 111, and the dust collection cavity 114 is communicated with the first air duct 111. The dust collection cavity 114 serves to collect pollutants such as particles and debris.

[0038] Further, a discharge port (not shown in the figure) communicated with the dust collection cavity 114 is provided on the housing 1. That is, the user can discharge the pollutants such as particles and debris collected in the dust collection cavity 114 through the discharge port.

[0039] Further, a seal (not shown in the figure) is provided at the discharge port, and the seal is detachably connected to the housing 1. During the operation of the chain saw, the seal is provided at the discharge port to prevent air flow from entering the dust collection chamber 114 through the discharge port and blowing the pollutants in the dust collection chamber 114 towards the first air duct. When sewage discharge is required, the chain saw can be turned off and the seal can be disassembled, so as to discharge the pollutants such as particles and debris collected in the dust collection chamber 114 through the discharge port.

[0040] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0041] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A chain saw, characterized in that, It includes a housing (1) and a handle (6) disposed at one end side of the housing (1); The housing (1) is configured with an installation cavity (11), an air inlet (12) and an air outlet (13). The installation cavity (11) is configured to accommodate a motor assembly (2). The air inlet (12) is disposed at the end side of the housing (1) close to the handle (6). The air outlet (13) is disposed at the lower end side of the installation cavity (11). The housing (1) further includes a battery cavity (14). The installation cavity (11) is further configured with a first air duct (111) located on the periphery of the battery cavity (14) and close to one side of the air inlet (12), a second air duct (112) located on the periphery of the battery cavity (14), and a motor cavity (113) located on the periphery of the battery cavity (14) and facing one side of the second end of the housing (1). The first air duct (111) is communicated with the air inlet (12). The second air duct (112) is communicated with the first air duct (111). The motor cavity (113) is communicated with the second air duct (112). The air outlet (13) is communicated with the motor cavity (113). The first air duct (111) and the motor cavity (113) are disposed on opposite sides of the battery cavity (14).

2. The chainsaw according to claim 1, characterized in that, A plurality of baffles (15) are provided at intervals at the air inlet (12), and two adjacent baffles (15) define a first air inlet channel (121).

3. The chain saw according to claim 2, characterized in that, Along the direction from the outside to the inside of the air inlet (12), the baffle (15) is inclined upward at the air inlet (12).

4. The chainsaw according to claim 3, characterized in that, A plurality of guide plates (16) corresponding to the baffles (15) one by one are further provided at the air inlet (12). Two adjacent guide plates (16) define a second air inlet channel (122). The first air inlet channel (121) is communicated with the second air inlet channel (122).

5. The chain saw according to claim 4, characterized in that, Two air inlets (12) are oppositely arranged in the horizontal direction at the first end of the housing (1), and the second air inlet channels (122) of the two air inlets (12) are oppositely arranged.

6. The chain saw according to claim 1, characterized in that, The installation cavity (11) further includes a dust collection cavity (114) located below the first air duct (111), and the dust collection cavity (114) is communicated with the first air duct (111).

7. The chainsaw according to claim 6, characterized in that, A discharge port communicated with the dust collection cavity (114) is provided on the housing (1), and a seal is provided at the discharge port. The seal is detachably connected to the housing (1).

8. The chain saw according to claim 1, characterized in that, The second air duct (112) is disposed at the top end of the housing (1).

9. The chainsaw according to claim 1, characterized in that, The motor assembly (2) includes a motor body (21), an air guide cover (22) and a wind blade (23) disposed in the air guide cover (22). The motor body (21) is connected to the wind blade (23). The air guide cover (22) is respectively communicated with the motor cavity (113) and the air outlet (13).

10. The chain saw according to claim 1, characterized in that, The chain saw further includes a battery pack (3) detachably installed in the battery cavity (14) and a controller (4) installed in the second air duct (112). The controller (4) is electrically connected to the motor assembly (2).

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