Lithium battery electric circular saw and pin ventilation structure

Abstract

The utility model discloses a lithium battery electric circular saw and a pin ventilation structure, and relates to the related technical field of electric circular saws, the lithium battery electric circular saw comprises a pin frame, the pin frame is fixedly connected with a plurality of pins, the pins are arranged in an array, the pin frame is provided with a plurality of air inlet holes, the air inlet holes and the pins are arranged in a staggered manner, and the air inlet holes and the pins are arranged in a staggered manner. According to the utility model, the gap hole and the air inlet hole are formed in the pin frame, the joint of the pin and the battery pack is communicated with the outside, air circulation is realized, heat on the pin is taken away, the heat dissipation effect is realized, the service life of the pin is prolonged, the gap hole is formed in one side of the controller, meanwhile, the controller can be cooled, and the service life of the controller is prolonged. The machine service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of electric circular saws, and in particular to a lithium-ion electric circular saw and a pin ventilation structure. Background Technology

[0002] An electric circular saw is a tool that uses a single-phase series-wound electric motor as its power source, and then drives the circular saw blade through a transmission mechanism to perform sawing operations. It is characterized by safety, reliability, and high work efficiency. The electric circular saw adopts a handle-type external structure and mainly consists of an electric motor, a gearbox, a protective cover, an adjustment mechanism and base plate, a handle, a switch, a non-reconnectable plug, and a circular saw blade. In order to further improve the portability of the electric circular saw, a lithium battery has been added to provide power to the existing one.

[0003] Currently, lithium-ion battery-powered circular saws are widely used in the power tool market for cutting materials such as wood, metal, and plastic. The lithium battery connects to a controller via pins to control the motor, ultimately enabling mechanical work.

[0004] Current lithium-ion circular saw pins simply serve as a bridge connecting the battery pack and the controller. Under prolonged machine operation, the pins on the pin plate may overheat due to overload, which can easily damage the battery pack. Utility Model Content

[0005] Purpose of the invention: The purpose of this utility model is to provide a ventilation structure for the pins of a lithium-ion circular saw, which solves the problem of overheating of the pins of the lithium battery in the circular saw during long-term high-load operation.

[0006] Technical solution

[0007] A pin ventilation structure for a lithium-ion electric circular saw includes a pin bracket, on which a plurality of pins are fixedly connected. The pins are arranged in an array, and the pin bracket is provided with a plurality of air inlets, which are staggered with the pins.

[0008] Preferably, the end of the bracket is provided with a cavity.

[0009] Preferably, the pin passes through the pin holder, the pin extends into the pin holder, and the air inlet is connected to the cavity.

[0010] Preferably, the plug bracket is provided with a gap hole, the gap hole is perpendicular to the air inlet, and the gap hole is in communication with the cavity.

[0011] Preferably, the two ends of the plug bracket are provided with the gap holes, and the gap holes on both sides are staggered.

[0012] A lithium-ion electric circular saw includes a body and a battery pack. The end of the body is provided with a connecting part, the connecting part including a slot, and the battery pack and the connecting part are inserted into the slot.

[0013] Preferably, the slot is equipped with a controller, and the controller is fixedly connected to a plug bracket. When the battery pack and the main body are connected, the plug bracket and the battery pack are connected.

[0014] Preferably, the end of the plug holder has a cavity, and a plug extending into the cavity is fixedly connected to the plug holder. The battery pack has a plug slot, and when the plug holder and the battery pack are connected, the plug is inserted into the plug slot.

[0015] Preferably, the plug bracket is provided with a gap hole and an air inlet hole, and the gap hole and the air inlet hole are connected to the cavity.

[0016] Beneficial effects: By providing gap holes and air inlets on the plug holder, the connection between the plug and the battery pack is connected to the outside, enabling air circulation, carrying away heat from the plug, and achieving heat dissipation, thereby improving the service life of the plug. The gap holes are located on one side of the controller, which can also help dissipate heat from the controller part, thus improving the service life of the machine. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the main body unfolded structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the slot structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the mounting structure of the bracket of this utility model;

[0021] Figure 5 This is a schematic diagram of the battery pack structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the bracket structure of this utility model;

[0023] Figure 7 This is a bottom view of the bracket structure of this utility model.

[0024] Reference numerals: 11. Circular saw; 12. Connector; 13. Controller; 14. Battery pack; 21. Slot; 31. Connector; 32. Pole bracket; 33. Pole; 34. Gap hole; 35. Air inlet; 36. Mounting groove; 37. Cavity; 41. Connecting bracket; 42. Pole groove. Detailed Implementation

[0025] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0026] like Figure 6 As shown, a pin ventilation structure for a lithium-ion electric circular saw includes a pin bracket 32, which is the main structure. Pins 33 are connected to the pin bracket 32, and the pins 33 are copper plates for power supply. The pins 33 are connected to the controller 13 and the battery pack 14.

[0027] like Figure 7 As shown, the pin 33 has several pieces, and each pin 33 is fixedly connected to the pin holder 32. The pins 33 are arranged in an array on the pin holder 32. In this application, the pin 33 has four pieces.

[0028] The plug 33 passes through the plug holder 32, and both ends of the plug 33 extend out of the plug holder 32. The ends of the plug 33 are connected to the battery pack 14.

[0029] Furthermore, the end of the plug bracket 32 ​​is provided with a cavity 37, which penetrates the plug bracket 32. One end of the plug 33 penetrates and extends into the cavity 37. When the plug bracket 32 ​​and the battery pack 14 are connected, the end of the battery pack 14 is located in the cavity 37.

[0030] The plug bracket 32 ​​is provided with an air inlet 35 and a gap hole 34. The air inlet 35 and the gap hole 34 are respectively connected to the two side walls of the cavity 37. The air inlet 35 and the gap hole 34 are perpendicular to each other. The air inlet 35 is set horizontally, and the gap hole 34 is set perpendicular to the air inlet 35, so as to facilitate the formation of an airflow channel and achieve the effect of heat dissipation of the plug 33.

[0031] The gap holes 34 and the air inlet holes 35 are arranged in an array, and the gap holes 34 and the air inlet holes 35 are arranged to cross the pins 33, which facilitates airflow on both sides of the pins 33 and improves the heat dissipation effect.

[0032] Furthermore, gap holes 34 are respectively provided on both ends of the plug bracket 32, and the axes of the two gap holes 34 are misaligned. The two gap holes 34 are not completely connected, which can delay the time for air to be discharged from the gap holes 34, so that the heat on the plug 33 can be better absorbed and carried away.

[0033] Furthermore, a lithium-ion electric circular saw includes a main body 11 and a battery pack 14. The bottom of the main body 11 is provided with a connecting part 12 for connecting with the battery pack 14. The connecting part 12 is provided with a slot 21 that penetrates the main body 11. When the battery pack 14 and the main body 11 are connected, the battery pack 14 and the inner wall of the slot 21 are slidably connected.

[0034] like Figure 3 As shown, the top wall of the slot 21 is connected to a controller 13, which is fixed to the top of the slot 21. The lower end of the controller 13 is fixedly connected to a pin bracket 32, which has pins 33. The pins 33 are fixed to the pin bracket 32 ​​and pass through the pin bracket 32. The upper and lower ends of the pins 33 extend out of the pin bracket 32, respectively. The upper end of the pins 33 contacts the controller 13, and the lower end of the pins 33 is connected to the battery pack 14.

[0035] like Figure 4 As shown, a connecting frame 41 is fixedly connected to the top of the battery pack 14. The connecting frame 41 is the main body for insertion. The inner wall of the connecting frame 41 and the slot 21 are slidably connected by a sliding groove. A cavity 37 is provided below the plug bracket 32. When the battery pack 14 and the main body 11 are connected, the connecting frame 41 is inserted into the cavity 37. The connecting frame 41 is provided with a plug groove 42. The plug groove 42 and the plug 33 correspond one-to-one. When the connecting frame 41 is inserted into the cavity 37, the plug 33 on the plug bracket 32 ​​is inserted into the plug groove 42, so as to achieve the effect of power supply.

[0036] The lower part of the plug bracket 32 ​​is also provided with a mounting groove 36. The mounting groove 36 and the vent hole 35 are arranged in parallel. The mounting groove 36 opens downward and extends through both ends. The mounting groove 36 is connected to the cavity 37. A protrusion is also provided at the end of the connecting bracket 41. The protrusion corresponds to the mounting groove 36, which facilitates the corresponding connection between the battery pack 11 and the main body 11 and prevents misalignment. At the same time, the mounting groove 36 is arranged in an array. When no protrusion is inserted into the mounting groove 36, the mounting groove 36 can also serve as an air circulation channel to facilitate heat dissipation of the plug 33.

[0037] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A pin ventilation structure for a lithium-ion electric circular saw, comprising a pin bracket (32), characterized in that: The plug bracket (32) is fixedly connected to a number of plugs (33), the plugs (33) are arranged in an array, and the plug bracket (32) is provided with a number of air inlets (35), the air inlets (35) and the plugs (33) are arranged alternately.

2. The pin ventilation structure of a lithium-ion electric circular saw according to claim 1, characterized in that: The end of the bracket (32) is provided with a cavity (37).

3. The pin ventilation structure of a lithium-ion electric circular saw according to claim 2, characterized in that: The pin (33) passes through the pin holder (32), the pin (33) extends into the pin holder (32), and the air inlet (35) and the cavity (37) are connected.

4. The pin ventilation structure of a lithium-ion electric circular saw according to claim 3, characterized in that: The insert bracket (32) is provided with a gap hole (34), the gap hole (34) and the air inlet (35) are perpendicular to each other, and the gap hole (34) and the cavity (37) are connected.

5. The pin ventilation structure of a lithium-ion electric circular saw according to claim 4, characterized in that: The two ends of the bracket (32) are provided with the gap hole (34), and the gap holes (34) on both sides are staggered.

6. A lithium-ion electric circular saw, comprising a body (11) and a battery pack (14), characterized in that, The main body (11) is provided with a pin ventilation structure for a lithium-ion electric circular saw according to any one of claims 1 to 5. The end of the main body (11) is provided with a connecting part (12), the connecting part (12) includes a slot (21), and the battery pack (14) and the connecting part (12) are inserted through the slot (21).

7. A lithium-ion battery-powered circular saw according to claim 6, characterized in that: The slot (21) is equipped with a controller (13), and the controller (13) is fixedly connected to a plug bracket (32). When the battery pack (14) and the main body (11) are connected, the plug bracket (32) and the battery pack (14) are connected.

8. A lithium-ion battery-powered circular saw according to claim 7, characterized in that: The end of the plug bracket (32) is provided with a cavity (37), and a plug (33) extending into the cavity (37) is fixedly connected to the plug bracket (32). The battery pack (14) is provided with a plug groove (42). When the plug bracket (32) and the battery pack (14) are connected, the plug (33) is inserted into the plug groove (42).

9. A lithium-ion battery-powered circular saw according to claim 8, characterized in that: The insert bracket (32) is provided with a gap hole (34) and an air inlet (35), and the gap hole (34) and the air inlet (35) are connected to the cavity (37).

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