A wide voltage lithium battery chain saw

Abstract

The utility model discloses a wide-voltage lithium battery chain saw, comprising a body and a chain piece, a baffle is fixedly connected above the body, two free ends of the baffle are rotatably connected to a heat sink, a plurality of mounting grooves are provided on the heat sink, a fan is fixedly connected in the mounting groove, a gap exists between the heat sink and the chain piece, a control board is fixedly connected on a wall of the heat sink away from the chain piece, an embedding groove is provided on the baffle, when the control board is located in the embedding groove, the gap becomes larger and the fan is turned off, the design can timely cool the chain piece when it is in use, and avoid the chain piece from being overheated due to long-term friction, and the control board can control the switch of the fan according to the actual cutting situation of the chain piece, and can start the fan after the chain piece is separated from the cut object, the design makes the heat dissipation of the fan more timely, and further improves the heat dissipation effect.

Description

Technical Field

[0001] The utility model belongs to the field of electric chain saws, relates to a lithium electric chain saw, and particularly relates to a wide-voltage lithium electric chain saw. Background Art

[0002] A lithium-ion chain saw is an electric tool powered by a lithium battery. It is mainly composed of a motor, a saw blade and a chain. The lithium-ion chain saw uses a chain to move, and different saw blades and chains can be replaced according to different work needs. The lithium-ion chain saw is suitable for outdoor work such as logging and felling trees. Its advantages are that it is portable, lightweight and flexible to use.

[0003] For example, a single-grip lithium-ion electric chain saw with publication number CN206389832U comprises a chain, a guide plate and a body, wherein a guide plate seat connected to the guide plate, a flywheel and a motor are arranged inside the body, the chain is sleeved on the edge of the guide plate, and the chain is meshed and connected to the flywheel; a plurality of cutters are fixedly arranged on the chain; the motor is connected to the flywheel through a transmission mechanism, the transmission mechanism comprises a first bevel gear, a second bevel gear, a first gear and a second gear, the first bevel gear is fixedly connected to the rotating shaft of the flywheel, the second gear is fixedly connected to the output shaft of the motor, the first bevel gear and the second bevel gear are meshed and connected, the first gear and the second gear are meshed and connected, and the first gear and the second bevel gear are coaxially connected; a switch button and a lithium battery are arranged on the body, and the lithium battery, the switch button and the motor are electrically connected in sequence.

[0004] However, the chain of the lithium electric chain saw generates heat due to rapid friction when cutting objects, and excessively high chain temperature will reduce its service life. Utility Model Content

[0005] The utility model provides a wide-voltage lithium-ion chain saw, which can timely cool down a chain piece so as to extend the service life of the chain piece.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a wide-voltage lithium battery chain saw, including a body and a chain piece connected to the body, characterized in that the body is fixedly connected with a baffle plate above the chain piece, and the two free ends of the baffle plate are rotatably connected with a heat sink, a plurality of mounting grooves are provided on the heat sink, a fan is fixedly connected in the mounting groove, a gap exists between the heat sink and the chain piece, a control board is fixedly connected on a side wall of the heat sink away from the chain piece, and an embedding groove is provided on the baffle plate for facilitating the embedding of the control board, and when the control board is located in the embedding groove, the gap becomes larger and the fan is turned off.

[0007] A further preferred technical solution of the utility model is: an angle is formed between the control board and the heat sink, and the angle is greater than or equal to 90°. When the control board is embedded in the embedding groove, the control board rotates due to the push of the cut object and the chain sheet is embedded in the cut object.

[0008] A further preferred technical solution of the utility model is: the control board and the embedded groove are both fixedly connected with a sensing piece, the sensing piece is communicated with the fan, and when the control board contacts the sensing piece on the embedded groove, the fan is turned off.

[0009] A further preferred technical solution of the utility model is: the control plate is elastic, and when the control plate is located in the embedding groove and the heat sink continues to rotate, the control plate is deformed.

[0010] A further preferred technical solution of the utility model is: a limiting plate is fixedly connected to the top of the heat sink near the chain plate, and a groove is provided on the baffle plate for the limiting plate to be embedded. When the limiting plate is located in the groove, the heat sink is in a natural state.

[0011] A further preferred technical solution of the present invention is that the heat dissipation plate is arranged obliquely.

[0012] A further preferred technical solution of the utility model is: the heat sink is rotatably connected to the baffle via a rotating shaft.

[0013] A further preferred technical solution of the utility model is: a torsion spring for driving the heat sink to rotate is sleeved on the rotating shaft, and when the heat sink rotates to a side away from the chain sheet, the torsion spring is deformed.

[0014] A further preferred technical solution of the utility model is that the thickness of the heat dissipation plate gradually increases from bottom to top.

[0015] A further preferred technical solution of the utility model is: a curved surface is provided at the bottom end of the heat dissipation plate.

[0016] Compared with the prior art, the utility model includes a body and a chain plate, a baffle is fixedly connected to the top of the body, and the two free ends of the baffle are rotatably connected to a heat sink, a plurality of installation grooves are provided on the heat sink, a fan is fixedly connected in the installation groove, and a gap exists between the heat sink and the chain plate, a control board is fixedly connected on a wall of the heat sink away from the chain plate, and an embedding groove is provided on the baffle, when the control board is located in the embedding groove, the gap becomes larger and the fan is turned off, the design can cool down the chain plate in time when the chain plate is in use, and avoid the chain plate from overheating due to long-term friction, and the control board can control the switch of the fan according to the actual cutting situation of the chain plate, and can start the fan after the chain plate is separated from the cutting object, the design makes the heat dissipation of the fan more timely, and further improves the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 It is the overall structure diagram of the utility model;

[0019] Figure 2 It is an exploded view of the utility model;

[0020] Figure 3 For this utility model Figure 2 The enlarged view of point A in the middle;

[0021] Figure 4 The utility model is a cross-sectional view Figure 1 ;

[0022] Figure 5 The utility model is a cross-sectional view Figure 2 ;

[0023] Figure 6 For this utility model Figure 5 Enlarged view of point B in the middle.

[0024] In the figure: 1, body; 2, baffle; 3, heat sink; 4, fan; 5, control board; 6, chain plate; 7, mounting slot; 8, limit plate; 9, sensor; 10, embedded slot; 11, torsion spring; 12, rotating shaft; 13, arc surface; 14, gap; 15, groove. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0026] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0027] Figure 1 and Figure 2As shown, a wide-voltage lithium chain saw includes a body 1 and a chain piece 6 connected to the body 1. The body 1 is located above the chain piece 6 and is fixedly connected to a baffle 2, which can block some splashes. Both free ends of the baffle 2 are rotatably connected to a heat sink 3. The heat sink 3 is provided with a plurality of mounting grooves 7. A fan 4 is fixedly connected in the mounting groove 7. Therefore, when the lithium chain saw is used, the fan 4 is started to dissipate heat for the chain piece 6, thereby preventing the chain piece from being overheated due to rapid friction and affecting its service life. This design improves the cooling effect and service life of the chain piece 6.

[0028] Figure 2-Figure 4 As shown, there is a gap 14 between the heat sink 3 and the chain piece 6 to prevent the heat sink 3 from affecting the normal use of the chain piece 6.

[0029] Figure 2-Figure 4 As shown, the heat sink 3 is arranged obliquely so that the gap 14 gradually decreases from bottom to top. When the chain piece 6 cuts the object, as the chain piece 6 gradually sinks into the object to be cut, the heat sink 3 rotates under the push of the object to be cut. This design can facilitate the object to be cut to push the heat sink 3 to rotate, thereby preventing the heat sink 3 from affecting the normal use of the chain piece 6.

[0030] Figure 2-Figure 4 As shown, the thickness of the heat sink 3 gradually increases from bottom to top, and an arc surface 13 is provided at the bottom end of the heat sink 3, which can further facilitate the cut object to push the heat sink 3 to rotate, thereby preventing the heat sink 3 from affecting the normal use of the chain sheet 6.

[0031] Figure 2-Figure 4 As shown, the heat sink 3 is rotatably connected to the baffle 2 via a rotating shaft 12, and a torsion spring 11 is sleeved on the rotating shaft 12 for driving the heat sink 3 to rotate. Therefore, when the heat sink 3 rotates toward the side away from the chain piece 6, the heat sink 3 rotates around the rotating shaft 12, and the torsion spring 11 is deformed due to the force. After the chain piece 6 is used up, as the chain piece 6 is separated from the cut object, the force applied to the heat sink 3 is reduced, and the deformed torsion spring 11 drives the heat sink 3 to rotate in the opposite direction around the rotating shaft 12, thereby resetting the heat sink 3. This design plays a role in driving the heat sink 3 to reset.

[0032] Figure 2-Figure 6 As shown, the top of the heat sink 3 is fixedly connected to the limiting plate 8 near the chain piece 6, and the baffle 2 is provided with a groove 15 for the limiting plate 8 to be embedded in. Therefore, when the torsion spring 11 drives the heat sink 3 to reset, the limiting plate 8 is embedded in the groove 15 as the heat sink 3 rotates, thereby limiting the heat sink 3 and preventing the heat sink 3 from abutting against the chain piece 6 when resetting, affecting the normal use of the chain piece 6.

[0033] Figure 2-Figure 4As shown, a control board 5 is fixedly connected to a side wall of the heat sink 3 away from the chain plate 6, and a groove 10 is provided on the baffle 2 for easy embedding of the control board 5. A sensing member 9 is fixedly connected to both the control board 5 and the groove 10, and the sensing member 9 is connected to the fan 4. When the control board 5 contacts the sensing member 9 on the groove 10, the gap 14 becomes larger and the fan 4 is turned off.

[0034] Figure 2-Figure 4 As shown, when the chain piece 6 cuts the object to be cut, as the chain piece 6 gradually penetrates into the object to be cut, the heat sink 3 rotates to the side away from the chain piece 6 under the push of the object to be cut. At this time, the torsion spring 11 is deformed, the gap 14 becomes larger, and the limit plate 8 is separated from the groove 15. As the chain piece 6 gradually penetrates, the heat sink 3 continues to rotate so that the control board 5 is embedded in the groove 10. At this time, the control board 5 contacts the sensor 9 on the groove 10, and the fan 4 is disconnected, thereby preventing the fan 4 from starting when the chain piece 6 is completely immersed in the object to be cut.

[0035] Figure 2-Figure 4 As shown, an angle is formed between the control board 5 and the heat sink 3, and the angle is greater than or equal to 90°. When the control board 5 is embedded in the embedding groove 10, the control board 5 rotates due to the push of the cut object and the chain piece 6 is embedded in the cut object. This design can prevent the control board 5 from being stuck in the embedding groove 10 when the chain piece 6 is exposed, causing the fan 4 to be turned off.

[0036] Figure 2-Figure 4 As shown, the control plate 5 is elastic, so when the control plate 5 is located in the embedding groove 10 and the heat sink 3 continues to rotate, the control plate 5 is deformed, thereby facilitating the chain plate 6 to cut the object to be cut.

[0037] The above is an introduction to a wide voltage lithium battery chain saw provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A wide voltage lithium battery chain saw, comprising a body and a chain connected to the body, characterized in that: The machine body is fixedly connected with a baffle above the chain plate, and both free ends of the baffle are rotatably connected with a heat sink, a plurality of mounting grooves are provided on the heat sink, a fan is fixedly connected in the mounting groove, a gap exists between the heat sink and the chain plate, a control board is fixedly connected on a side wall of the heat sink away from the chain plate, and an embedding groove is provided on the baffle for easy embedding of the control board, and when the control board is located in the embedding groove, the gap becomes larger and the fan is turned off.

2. A wide voltage lithium battery chain saw according to claim 1, characterized in that: An angle is formed between the control board and the heat sink, and the angle is greater than or equal to 90°. When the control board is embedded in the embedding groove, the control board rotates due to the push of the cut object and the chain sheet is embedded in the cut object.

3. The wide voltage lithium battery chain saw according to claim 1, characterized in that: The control board and the embedded groove are both fixedly connected with a sensing piece, and the sensing piece is communicated with the fan. When the control board contacts the sensing piece on the embedded groove, the fan is turned off.

4. The wide voltage lithium battery chain saw according to claim 1, characterized in that: The control plate is elastic, and when the control plate is located in the embedding groove and the heat sink rotates continuously, the control plate is deformed.

5. The wide voltage lithium battery chain saw according to claim 1, characterized in that: The top of the heat sink is fixedly connected to a limiting plate near one side of the chain sheet, and a groove is provided on the baffle plate for the limiting plate to be embedded. When the limiting plate is located in the groove, the heat sink is in a natural state.

6. The wide voltage lithium battery chain saw according to claim 1, characterized in that: The heat dissipation plate is arranged obliquely.

7. The wide voltage lithium battery chain saw according to claim 1, characterized in that: The heat dissipation plate is rotatably connected to the baffle plate via a rotating shaft.

8. The wide voltage lithium battery chain saw according to claim 7, characterized in that: The rotating shaft is sleeved with a torsion spring for driving the heat sink to rotate. When the heat sink rotates toward a side away from the chain sheet, the torsion spring is deformed.

9. The wide voltage lithium battery chain saw according to claim 1, characterized in that: The thickness of the heat dissipation plate increases gradually from bottom to top.

10. The wide voltage lithium battery chain saw according to claim 1, characterized in that: The bottom end of the heat dissipation plate is provided with an arc surface.

Images