Chain saw

Abstract

The utility model relates to the field of chain saws, and particularly discloses a chain saw which comprises a handle. The motor is arranged at one end of the handle; the safety assembly comprises a microswitch and a rotating block, the microswitch is arranged on the handle, and the microswitch is electrically connected with the motor; the rotating block is rotationally connected with the handle, one end of the rotating block is close to the microswitch, and when the other end of the rotating block is shifted, the rotating block can press the microswitch, so that the microswitch is in a conducting state. The chain saw has the advantages that it can be guaranteed that when the handle is connected with the extension rod, the situation that an operator mistakenly touches a switch for starting the chain saw on the handle, and consequently the chain saw is started is avoided, and therefore the safety and reliability of operating the chain saw can be improved.

Description

Technical Field

[0001] The present application relates to the field of chain saws, and in particular to a chain saw. Background Art

[0002] Chain saws are a tool widely used in gardening, forestry and construction, usually for cutting trees, trimming branches, felling wood, etc. In gardening applications, chain saws can not only be used for ground operations, but are also often used for pruning high branches. Due to the potential dangers of working at heights, operators need special tools to complete these tasks safely. For this reason, chain saws are often used in combination with extension poles to allow operators to cut high branches while standing on the ground, thereby reducing operational risks.

[0003] The chain saw structure includes a saw body, a cutting saw chain, an extension rod and a handle. A switch for starting the chain saw is provided on the handle, and the switch can control the activation of the chain saw. The extension rod is a chain saw accessory, and its main function is to expand the working range of the chain saw. One end of the extension rod is connected to the handle of the chain saw, and the other end is provided with a handle and a control device. The operator can start the chain saw through the control device on the extension rod. When operating the chain saw alone, it is necessary to connect the chain saw with the extension rod, and then hold the handle and the extension rod, and control the movement direction and cutting speed of the chain saw through the control device. At the same time, in order to ensure the safety and reliability of the chain saw when in use, a safety switch is usually provided at the switch for starting the chain saw. The chain saw can only be started when the safety switch is turned off; on the contrary, when the safety switch is turned on, the chain saw cannot be started normally.

[0004] However, in actual application, the safety switch is often forgotten to be turned on after the chain saw is used, especially when the chain saw is frequently used for cutting operations. In order to improve the efficiency of the cutting operation, the safety switch is usually turned off during use, which may lead to the situation of accidentally touching the switch during the operation of the chain saw and the extension rod. In this case, once the chain saw is connected to the power supply, the chain saw may be accidentally started, resulting in accidental injury. This situation is extremely dangerous, therefore, it is necessary to improve the safety insurance mechanism of the chain saw to improve the safety and reliability of the operation of the chain saw. Utility Model Content

[0005] In order to solve the problem that the safety insurance mechanism on the chain saw in the related art is imperfect, resulting in safety hazards in the process of connecting the chain saw with the extension rod, thereby reducing the safety and reliability of operating the chain saw, the present application provides a chain saw.

[0006] The present application provides a chain saw adopting the following technical solution:

[0007] A chain saw comprising:

[0008] handle;

[0009] A motor, wherein the motor is arranged at one end of the handle;

[0010] The insurance component includes a micro switch and a rotating block. The micro switch is arranged on the handle and is electrically connected to the motor. The rotating block is rotationally connected to the handle, and one end of the rotating block is close to the micro switch. When the other end of the rotating block is turned, the rotating block presses the micro switch to put the micro switch in an on state.

[0011] By adopting the above technical solution, the micro switch and the rotating block are arranged. Since the micro switch and the motor are electrically connected, the motor can be started only when the rotating block presses the micro switch. Therefore, it can be ensured that when the handle is connected to the extension rod, even if the switch on the handle for starting the chain saw is accidentally touched, the chain saw will not be started, thereby improving the safety and reliability of operating the chain saw.

[0012] Optionally, the insurance component also includes a reed switch and a magnetic part. An extension rod is provided on the handle, and a connecting part is provided at one end of the extension rod. The extension rod is connected to an end of the handle away from the motor through the connecting part; the reed switch is provided on the handle, and the reed switch is electrically connected to the micro switch; the magnetic part is provided on the connecting part, and the magnetic part is fixedly connected to the connecting part. The magnetic part can act on the reed switch, and when the reed switch is close to the magnetic part, the reed switch will be in a conducting state.

[0013] By adopting the above technical solution, the correct installation between the handle and the extension rod can be ensured by arranging the reed switch and the magnetic part, because the reed switch will be in the on state only when the handle and the extension rod are fully installed in place; at the same time, the reed switch is electrically connected to the micro switch to form multiple safety insurances. The chain saw can only be started when the reed switch and the micro switch are in the on state at the same time, thereby further improving the safety and reliability of the chain saw.

[0014] Optionally, the safety assembly further comprises an elastic member, wherein the elastic member is arranged on the rotating block, one end of the elastic member is connected to the rotating block, and the other end of the elastic member is connected to the handle.

[0015] By adopting the above technical solution, the elastic member can not only make the rotating block automatically reset when it is not moved, but also make it difficult for the rotating block to rotate, thereby preventing the micro switch from being turned on when the rotating block is accidentally rotated, thereby causing accidental injury.

[0016] Optionally, the elastic member is configured as a spring sheet, a clamping seat is fixedly provided on the rotating block, one end of the spring sheet is clamped in the clamping seat, and the other end of the spring sheet is connected to the handle.

[0017] By adopting the above technical solution, the elastic member is set as a spring leaf. During the bending process of the spring leaf, the restoring force usually increases sharply within a specific angle and can react quickly, thereby ensuring the timeliness of the response of the insurance component.

[0018] Optionally, the elastic member is configured as a torsion spring, the torsion spring is disposed on the rotating member, one end of the torsion spring is fixedly connected to the rotating member, and the other end of the torsion spring is fixedly connected to the handle.

[0019] By adopting the above technical solution, the elastic member is set as a torsion spring, and the installation space required for the torsion spring is smaller. At the same time, the torsion spring has higher torsional stiffness and elastic force, and can adapt to long-term and frequent torsional movements, so it has a longer service life.

[0020] Optionally, the safety component also includes a toggle rod, the handle is provided with a plug-in slot, the toggle rod is passed through the connecting part and is slidably connected to the connecting part, one end of the toggle rod passes through the plug-in slot, and the toggle rod abuts against one end of the rotating block, so that the rotating block can be driven to rotate by the toggle rod.

[0021] By adopting the above technical solution, the toggle lever can not only control the rotation of the rotating block more conveniently and quickly, but also lock the position between the two when the extension rod is connected to the handle, thereby preventing the chain saw from slipping on the extension rod during use, thereby improving the reliability and safety of operating the chain saw.

[0022] Optionally, the safety assembly further includes a button cap and a spring, wherein the button cap is fixed to one end of the toggle rod away from the rotating block, the spring is sleeved on the toggle rod, one end of the spring is fixedly connected to the toggle rod, and the other end of the spring is connected to the connecting part.

[0023] By adopting the above technical solution, the button cap makes the toggle rod feel better to hold and is more convenient for operators to operate; the spring can achieve continuous and stable abutment of the toggle rod against the rotating block, avoiding the vibration generated when using the chain saw and causing the micro switch to disconnect, thereby improving the reliability of the connection.

[0024] Optionally, an end of the toggle rod close to the button cap is provided with an external thread, a boss is fixedly provided on the connecting portion, and the toggle rod is threadably connected to the boss via the external thread.

[0025] By adopting the above technical solution, the toggle rod is threadedly connected to the boss, which can not only conveniently adjust the position of the toggle rod, but also lock the toggle rod at the connection portion, thereby ensuring that during the use of the chain saw, the toggle rod will not be accidentally toggled by some obstacles, causing the toggle rod to loosen or shift, thereby preventing the chain saw from being accidentally shut down and affecting the reliability of the chain saw.

[0026] And ensure that it will not loosen or shift during use

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. By adopting the above technical solution, the micro switch and the rotating block are arranged. Since the micro switch and the motor are electrically connected, the motor can be started only when the rotating block presses the micro switch. Therefore, it can be ensured that when the handle is connected to the extension rod, even if the switch for starting the chain saw on the handle is accidentally touched, the chain saw will not be started, thereby improving the safety and reliability of operating the chain saw;

[0029] 2. The reed switch and magnetic parts can ensure the correct installation between the handle and the extension rod, because the reed switch will be in the on state only when the handle and the extension rod are fully installed; at the same time, the reed switch is electrically connected to the micro switch to form multiple safety insurances. The chain saw can only be started when the reed switch and the micro switch are in the on state at the same time, thereby further improving the safety and reliability of the chain saw;

[0030] 3. The toggle lever can not only control the rotation of the rotating block more conveniently and quickly, but also lock the position between the two when the extension rod is connected to the handle, to prevent the chain saw from slipping on the extension rod during use of the chain saw, thereby improving the reliability and safety of operating the chain saw. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an overall schematic diagram of the chain saw in Example 1 of the present application.

[0032] Figure 2 It is an overall schematic diagram of the handle and the connecting seat in Example 1 of the present application.

[0033] Figure 3 yes Figure 1 Enlarged schematic diagram of part A.

[0034] Figure 4 It is an exploded schematic diagram of the rotating block and the elastic member in Example 1 of the present application.

[0035] Figure 5 It is an exploded schematic diagram of the rotating block and the elastic member in Example 2 of the present application.

[0036] Reference numerals: 1, handle; 11, plug-in slot; 12, slide rail; 13, rotating shaft;

[0037] 2. Motor; 21. Circuit board;

[0038] 3. Insurance component; 31. Micro switch; 32. Rotating block; 321. Adapter; 322. Mounting slot; 33. Reed switch; 34. Magnetic component; 35. Elastic component; 36. Toggle lever; 37. Button cap; 38. Spring;

[0039] 4. Extension rod; 41. Connecting part; 411. Sliding groove; 412. Sliding groove; 42. Boss; 43. Control device. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-5 This application is described in further detail.

[0041] Example 1

[0042] The present application embodiment discloses a chain saw. Figure 1 A chain saw includes a handle 1, a motor 2, an extension rod 4 and a safety assembly 3. The motor 2 is installed at one end of the handle 1, and the other end of the handle 1 is connected to one end of the extension rod 4. The safety assembly 3 is installed at the connection between the handle 1 and the extension rod 4. The motor 2 is used as the power source of the chain saw, the handle 1 is the gripping part when the chain saw is used alone, the extension rod 4 can expand the working range of the chain saw, and the safety assembly 3 can act on the motor 2. The safety assembly 3 can control the on and off of the circuit of the motor 2, thereby controlling the start of the chain saw.

[0043] Reference Figure 2 and Figure 3 The handle 1 is configured as a hollow shell, a circuit board 21 for controlling the motor 2 is installed in the handle 1, the motor 2 is installed at one end of the handle 1, the motor 2 is electrically connected to the circuit board 21, and a slide rail 12 is provided at the other end of the handle 1, and the handle 1 can be slidably engaged with the extension rod 4 through the slide rail 12. A plug-in slot 11 is provided on the end surface of the handle 1 near one end of the extension rod 4, and the plug-in slot 11 is communicated with the internal cavity of the handle 1.

[0044] A connecting portion 41 is provided at one end of the extension rod 4, and a control device 43 is provided at the other end of the extension rod 4. The connecting portion 41 is provided as a hollow shell, a sliding groove 411 is provided through the connecting portion 41, a boss 42 is fixedly provided on one side of the sliding groove 411, and a sliding groove 412 is further provided on the side of the connecting portion 41, and the sliding groove 412 can be slidably engaged with the slide rail 12 on the handle 1.

[0045] Reference Figure 3The insurance assembly 3 includes a reed switch 33, a magnetic member 34, a micro switch 31, a toggle rod 36, a button cap 37, a spring 38, a rotating block 32 and an elastic member 35, wherein the reed switch 33 and the micro switch 31 are both arranged on the circuit board 21, and the motor 2, the reed switch 33 and the micro switch 31 are all connected in series. Therefore, only when the reed switch 33 and the micro switch 31 are both in the on state, the motor 2 can be connected to the power supply, so that the chain saw can be started.

[0046] In the embodiment of the present application, the magnetic member 34 can be set as a magnet, which is fixed on the inner wall of the connecting seat near one end of the handle 1. When the extension rod 4 and the handle 1 are fully installed in place, the magnet is facing the reed switch 33, and the reed switch 33 will be in a conducting state under the action of the magnet.

[0047] Reference Figure 3 and Figure 4 The toggle rod 36 is slidably arranged on the connecting portion 41 through the sliding groove 411. When the extension rod 4 and the handle 1 are installed in place, one end of the toggle rod 36 can be inserted into the insertion groove 11, and the other end of the toggle rod 36 is fixedly connected to the button cap 37. An external thread is provided at one end of the toggle rod 36 close to the button cap 37, and the toggle rod 36 is threadedly connected to the boss 42 through the external thread.

[0048] The spring 38 is sleeved on the toggle rod 36 , one end of the spring 38 is fixedly connected to the toggle rod 36 , and the other end of the spring 38 abuts against the inner wall of the connecting portion 41 . The spring 38 is in a contracted state in a normal state.

[0049] The rotating block 32 is installed in the handle 1. The handle 1 is fixed with a rotating shaft 13. The rotating block 32 is rotatably connected to the rotating shaft 13. One end of the rotating block 32 is close to the micro switch 31 and is located above the micro switch 31. The other end of the rotating block 32 is opposite to the plug-in slot 11.

[0050] When the end of the toggle rod 36 away from the knob is inserted into the insertion slot 11, the toggle rod 36 can abut against the rotating block 32 and can drive the rotating block 32 to rotate, causing the end of the rotating block 32 close to the micro switch 31 to press the micro switch 31, so that the micro switch 31 is in a conducting state, and a plurality of reed tubes 33 are connected to the micro switch 31 at the same time, then the switch for starting the chain saw provided on the original chain saw handle 1 will be in an invalid state, and the chain saw cannot be started by the secondary switch at this time.

[0051] At the same time, the button cap 37 is rotated, and the toggle rod 36 and the boss 42 are locked with each other, so as to ensure that the toggle rod 36 will not be accidentally toggled by some obstacles during the use of the chain saw, thereby preventing the chain saw from being accidentally shut down and affecting the reliability of the chain saw.

[0052] The elastic member 35 is arranged on the rotating member. In the embodiment of the present application, a clamping seat 321 is fixedly provided on the rotating block 32 of the toggle rod 36. The elastic member 35 is arranged as a spring leaf. One end of the spring leaf is clamped in the clamping seat 321, and the other end of the spring leaf is fixedly connected to the inner wall of the handle 1.

[0053] When the toggle rod 36 is pulled out of the insertion slot 11, the rotating block 32 will reset under the action of the spring, and the end of the rotating block 32 close to the micro switch 31 will be lifted, thereby releasing the pressure on the micro switch 31, so that the micro switch 31 can be controlled by the toggle rod 36; the toggle rod 36 set at the same time can also lock the position between the extension rod 4 and the handle 1 when the extension rod 4 is connected to the handle 1, so as to prevent the chain saw from slipping on the extension rod 4 during use.

[0054] The implementation principle of the chain saw of the embodiment of the present application is as follows: when the handle 1 of the chain saw needs to be installed with the extension rod 4, the toggle rod 36 is pulled outward to connect the handle 1 and the extension rod 4 in place, at which time the reed switch 33 is in a conducting state under the action of the magnet, the toggle rod 36 is released, and the toggle rod 36 is inserted into the plug-in slot 11 to prompt the rotating block 32 to press the micro switch 31, and finally the chain saw can be started by the control device at the other end of the extension rod 4;

[0055] After use, the chain saw is turned off, and then the toggle rod 36 is pulled outward to remove the chain saw from the extension rod 4.

[0056] Example 2

[0057] The present application embodiment discloses a chain saw. The difference between this embodiment and embodiment 1 is that Figure 5 In the embodiment of the present application, the elastic member 35 is configured as a torsion spring, and a mounting groove 322 is opened on one side of the rotating block 32. The torsion spring is arranged in the mounting groove 322. The rotating block 32 is rotatably connected to the rotating shaft 13 through the mounting groove 322. One end of the torsion spring is fixedly connected to the rotating shaft 13, and the other end of the torsion spring is fixedly connected to the rotating block 32.

[0058] The implementation principle of the chain saw of the embodiment of the present application is as follows: when the handle 1 of the chain saw needs to be installed with the extension rod 4, the toggle rod 36 is pulled outward to connect the handle 1 and the extension rod 4 in place, at which time the reed switch 33 is in a conducting state under the action of the magnet, the toggle rod 36 is released, and the toggle rod 36 is inserted into the plug-in slot 11 to prompt the rotating block 32 to press the micro switch 31, and finally the chain saw can be started by the control device at the other end of the extension rod 4;

[0059] After use, the chain saw is turned off, and then the toggle rod 36 is pulled outward to remove the chain saw from the extension rod 4.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A chain saw, characterized in that ,include: Handle (1); A motor (2), the motor (2) being arranged at one end of the handle (1); A safety component (3), the safety component (3) comprising a micro switch (31) and a rotating block (32), the micro switch (31) being arranged on the handle (1), the micro switch (31) being electrically connected to the motor (2); the rotating block (32) being rotationally connected to the handle (1), and one end of the rotating block (32) being close to the micro switch (31), and when the other end of the rotating block (32) is turned, the rotating block (32) presses the micro switch (31), so that the micro switch (31) is in a conducting state.

2. A chain saw according to claim 1, characterized in that: The safety assembly (3) further comprises a reed switch (33) and a magnetic member (34); an extension rod (4) is provided on the handle (1); a connecting portion (41) is provided at one end of the extension rod (4); and the extension rod (4) is connected to an end of the handle (1) away from the motor (2) via the connecting portion (41); The reed switch (33) is arranged on the handle (1), and the reed switch (33) is electrically connected to the micro switch (31); the magnetic component (34) is arranged on the connecting portion (41), and the magnetic component (34) is fixedly connected to the connecting portion (41); the magnetic component (34) can act on the reed switch (33), and when the reed switch (33) is close to the magnetic component (34), the reed switch (33) will be in a conducting state.

3. A chain saw according to claim 1, characterized in that: The safety assembly (3) further comprises an elastic member (35), wherein the elastic member (35) is arranged on the rotating block (32), one end of the elastic member (35) is connected to the rotating block (32), and the other end of the elastic member (35) is connected to the handle (1).

4. A chain saw according to claim 3, characterized in that: The elastic member (35) is configured as a leaf spring, a clamping seat (321) is fixedly provided on the rotating block (32), one end of the elastic member (35) is clamped in the clamping seat (321), and the other end of the elastic member (35) is connected to the handle (1).

5. A chain saw according to claim 3, characterized in that: The elastic member (35) is configured as a torsion spring, one end of the elastic member (35) is fixedly connected to the rotating block (32), and the other end of the elastic member (35) is fixedly connected to the handle (1).

6. A chain saw according to claim 2, characterized in that: The safety assembly (3) further comprises a toggle rod (36); the handle (1) is provided with an insertion slot (11); the toggle rod (36) is inserted into the connecting portion (41) and is slidably connected to the connecting portion (41); one end of the toggle rod (36) passes through the insertion slot (11), and the toggle rod (36) abuts against one end of the rotating block (32); the rotating block (32) can be driven to rotate by the toggle rod (36).

7. A chain saw according to claim 6, characterized in that: The safety assembly (3) further comprises a button cap (37) and a spring (38); the button cap (37) is fixedly mounted on one end of the toggle rod (36) away from the rotating block (32); the spring (38) is sleeved on the toggle rod (36); one end of the spring (38) is fixedly connected to the toggle rod (36); and the other end of the spring (38) is connected to the connecting portion (41).

8. A chain saw according to claim 7, characterized in that: An end of the toggle rod (36) close to the button cap (37) is provided with an external thread, a boss (42) is fixedly provided on the connecting portion (41), and the toggle rod (36) is threadedly connected to the boss (42) via the external thread.

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