Self-locking structure of electric chain saw

Abstract

The utility model relates to the field of electric chain saws, and discloses an electric chain saw self-locking structure which comprises two sets of outer shells, the two sets of outer shells are detachably connected through buckles, sliding grooves are formed in the outer sides of the outer shells, shifting blocks are slidably connected in the sliding grooves, locking supports are fixedly connected to the inner sides of the shifting blocks, and the locking supports are fixedly connected to the outer sides of the shifting blocks. A rotating column is rotatably connected to the interior of the locking support, fixing supports are fixedly connected to the two ends of the rotating column, a clamping groove is formed in the shell, a clamping plate assembly is slidably connected to the interior of the clamping groove, and a limiting rod is fixedly connected to the top end of the locking support. According to the electric chain saw, the locking support and the clamping plate assembly are arranged, the trigger assembly can be pulled to start the electric chain saw only after the shifting block is pressed, the locking support is arranged above the trigger assembly, the left side and the right side of the shifting block are arranged, a user can still start the electric chain saw through single-hand operation when grabbing the handle with the front hand and the back hand, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the field of electric chain saws, in particular to a self-locking structure of an electric chain saw. Background Technique

[0002] An electric chain saw is a woodworking power tool that uses a rotating chain saw blade for sawing. It is widely used in forest logging, timber processing, branch trimming, as well as timber yard processing, railway sleeper sawing and other operations. It is also suitable for small workpiece assembly at home.

[0003] Currently, electric chain saws are usually started by pressing a start button. To avoid accidental activation of the start button, which may pose a safety hazard, a self-locking structure for the electric chain saw is needed to ensure that the motor of the electric chain saw only starts when the operator actively presses the button.

[0004] The current self-locking structure of electric chain saws is usually set on one side of the handle. When in use, the self-locking structure needs to be pressed to unlock first, and then the start button is pressed to start the electric chain saw. However, in actual use, the position settings of the self-locking structure and the start button make it uncomfortable to start with only one hand. At the same time, when the electric chain saw needs to be used in a reverse hand position, a second hand is required to assist in pressing the self-locking structure, which is inconvenient to use. Therefore, a self-locking structure of an electric chain saw is proposed to solve the above problems. Content of the Utility Model

[0005] To make up for the above deficiencies, the utility model provides a self-locking structure of an electric chain saw, aiming to improve the problem that it is inconvenient to press the self-locking structure and the start button simultaneously with one hand in the prior art.

[0006] To achieve the above object, the utility model adopts the following technical scheme: A self-locking structure of an electric chain saw, including a housing. There are two groups of the housings, and the two groups of housings are detachably connected by a buckle. A sliding groove is opened on the outer side of the housing, and a slider is slidably connected inside the sliding groove. A locking bracket is fixedly connected to the inner side of the slider. A rotating column is rotatably connected inside the locking bracket. Fixed brackets are fixedly connected to both ends of the rotating column. A clamping groove is opened inside the housing, and a clamping plate assembly is slidably connected inside the clamping groove. The clamping plate assembly is used to return the locking bracket to its original position. A limiting rod is fixedly connected to the top end of the locking bracket, and a push rod is fixedly connected to the bottom end of the locking bracket. The bottom end of the push rod contacts an insurance block, and a trigger assembly is fixedly connected to the bottom end of the insurance block.

[0007] As a further description of the above technical solution:

[0008] The front and rear sides of the locking bracket are arc-shaped and are in contact with the inner side of the housing. The contact surface between the housing and the locking bracket is adapted to the arc-shaped surfaces on the front and rear sides of the locking bracket.

[0009] As a further description of the above technical solution:

[0010] The back of the fixed bracket is fixedly connected to the inner wall of the back of the housing.

[0011] As a further description of the above technical solution:

[0012] The splint assembly includes a limit plate, the outer periphery of the limit plate is clamped inside the card slot, and an elastic clip is fixedly connected to the bottom end of the limit plate.

[0013] As a further description of the above technical solution:

[0014] There are two groups of the elastic clips, the two groups of elastic clips are symmetrically arranged front and back at the bottom end of the limit plate, and the limit rod is located between the two groups of elastic clips.

[0015] As a further description of the above technical solution:

[0016] The trigger assembly includes a pressing trigger, the inner wall of the bottom end of the pressing trigger is fixedly connected to the bottom end of the safety block, and an elastic member is arranged inside the pressing trigger.

[0017] As a further description of the above technical solution:

[0018] Both the front and rear ends of the elastic member are clamped inside the housing.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, by setting the locking bracket and the splint assembly, the trigger assembly can be pulled only after pressing the toggle block, so that the electric chain saw is started. Moreover, the locking bracket is arranged above the trigger assembly, and the toggle blocks are arranged on both the left and right sides, so that the user can still use one-handed operation to start the electric chain saw when grasping the handle with the right or left hand, which is more convenient to use.

[0021] 2. In the utility model, only by using the splint assembly and the locking bracket, the pressing trigger can be conveniently locked to prevent the pressing trigger from being accidentally touched. While eliminating the safety hazard, the structure is relatively simple, the cost is low, and the economic benefit is good. Description of the Drawings

[0022] Figure 1 It is an overall internal schematic diagram of a self-locking structure of an electric chain saw proposed by the utility model;

[0023] Figure 2 It is an internal schematic diagram of the housing of a self-locking structure of an electric chain saw proposed by the utility model;

[0024] Figure 3 It is an enlarged schematic diagram at A of the internal part of the housing of a self-locking structure of an electric chain saw proposed by the utility model;

[0025] Figure 4 This is a schematic top view of the locking bracket of a self-locking structure of an electric chain saw proposed by the present utility model.

[0026] Legend:

[0027] 1. Housing; 2. Sliding groove; 3. Pushing block; 4. Locking bracket; 5. Rotating column; 6. Fixed bracket; 7. Card slot; 8. Limiting plate; 9. Elastic clip; 10. Limiting rod; 11. Thrust rod; 12. Safety block; 13. Pressing trigger; 14. Elastic member. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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 creative efforts shall fall within the protection scope of the present utility model.

[0029] Refer to Figures 1 - 3 , an embodiment provided by the present utility model: A self-locking structure of an electric chain saw includes a housing 1 that plays a role in fixing and supporting. There are two groups of the housing 1, and the two groups of the housing 1 are detachably connected by a buckle to form a closed shape, having a handle and a fuselage. A sliding groove 2 is opened on the outer side of the housing 1, and a pushing block 3 that is convenient to push is slidably connected inside the sliding groove 2. The sliding groove 2 facilitates the movement of the pushing block 3 inside the sliding groove 2. The inner side of the pushing block 3 is fixedly connected with a locking bracket 4 that plays a role in fixed connection. The front and rear sides of the locking bracket 4 are arc-shaped and are in contact with the inner side of the housing 1. The contact surface between the housing 1 and the locking bracket 4 is adapted to the arc-shaped surfaces on the front and rear sides of the locking bracket 4, so that the locking bracket 4 can rotate inside the housing 1 without movement interference. A rotating column 5 is rotatably connected inside the locking bracket 4, and the locking bracket 4 can rotate around the rotating column 5 as the center. Both ends of the rotating column 5 are fixedly connected with fixed brackets 6, and the back of the fixed brackets 6 is fixedly connected to the inner wall of the back of the rear housing 1. A card slot 7 is opened inside the housing 1, and a clamping plate assembly is slidably connected inside the card slot 7. The clamping plate assembly is used to straighten the locking bracket 4.

[0030] Refer to Figures 3 - 4, the splint assembly includes a limit plate 8, the outer periphery of the limit plate 8 is clamped inside the card slot 7. When the front and rear two groups of outer shells 1 are closed, the limit plate 8 can be fixed inside the card slot 7 and cannot move. The bottom end of the limit plate 8 is fixedly connected with elastic clips 9. There are two groups of elastic clips 9, and the two groups of elastic clips 9 are symmetrically arranged before and after at the bottom end of the limit plate 8. The elastic clip 9 has a certain elasticity. When the elastic clip 9 is subjected to an external force, it will deform, and at the same time, it will generate an elastic force to restore its original shape. The top end of the locking bracket 4 is fixedly connected with a limit rod 10. The limit rod 10 is located between the two groups of elastic clips 9. When the locking bracket 4 rotates, the locking bracket 4 will drive the limit rod 10 to rotate, and at the same time, it will drive the limit rod 10 to push one side of the elastic clip 9 to open. The bottom end of the locking bracket 4 is fixedly connected with a top rod 11. When the locking bracket 4 does not rotate, the bottom end of the top rod 11 at the bottom end of the locking bracket 4 contacts an insurance block 12, so that the insurance block 12 cannot rotate upward. The bottom end of the insurance block 12 is fixedly connected with a trigger assembly for starting the electric saw. The trigger assembly includes a pressing trigger 13. After the pressing trigger 13 is pressed to the bottom, the electric saw will be started. The inner wall of the bottom end of the pressing trigger 13 is fixedly connected to the bottom end of the insurance block 12. An elastic member 14 is arranged inside the pressing trigger 13. The elastic member 14 is columnar, so that the pressing trigger 13 can rotate around the center of the elastic member 14, and the elastic member 14 has a certain elasticity. When the elastic member 14 rotates, it will generate an elastic force to restore its original shape. Both the front and rear ends of the elastic member 14 are clamped inside the outer shell 1.

[0031] Working principle: When you want to easily use one hand to release the limit and press the pressing trigger 13 at the same time, hold the handle formed by closing the outer shell 1 with your hand, and place your index finger on the pressing trigger 13. At this time, the thumb of the hand can easily touch the dial 3. Then, the thumb moves the dial 3 downward. The dial 3 drives the locking bracket 4 to rotate around the rotating column 5. At the same time, the locking bracket 4 drives the limit rod 10 to rotate. The limit rod 10 squeezes one side of the elastic clip 9, causing the elastic clip 9 to deform and generate an elastic force in the opposite direction. At this time, the top rod 11 below the locking bracket 4 deflects and disengages from the insurance block 12. At this time, the index finger can easily pull the pressing trigger 13. And the dial 3 is provided on both the left and right sides, so that when using the right or left hand, one hand can move the dial 3 and pull the pressing trigger 13. When the use is over, release the pressing trigger 13. The pressing trigger 13 pops out under the action of the elastic member 14. At this time, the top rod 11 is not blocked by the insurance block 12. The elastic clip 9 releases the elastic potential energy, pushes the limit rod 10 back to the middle position between the two elastic clips 9, and drives the top rod 11 to contact the top surface of the insurance block 12 again, so that the pressing trigger 13 cannot be pulled, thus ensuring that the electric saw is not easily accidentally touched and eliminating potential safety hazards.

[0032] Finally, it should be noted that the above are only preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A self-locking structure of an electric chain saw, comprising a housing (1), characterized in that: There are two sets of the outer shells (1), and the two sets of the outer shells (1) are detachably connected by buckles. A sliding groove (2) is formed on the outer side of the outer shell (1), and a dial block (3) is slidably connected inside the sliding groove (2). A locking bracket (4) is fixedly connected to the inner side of the dial block (3). A rotating column (5) is rotatably connected inside the locking bracket (4). Fixed brackets (6) are fixedly connected to both ends of the rotating column (5). A clamping groove (7) is formed inside the outer shell (1), and a clamping plate assembly is slidably connected inside the clamping groove (7). The clamping plate assembly is used to straighten the locking bracket (4). A limiting rod (10) is fixedly connected to the top end of the locking bracket (4), and a push rod (11) is fixedly connected to the bottom end of the locking bracket (4). The bottom end of the push rod (11) contacts an insurance block (12), and a trigger assembly is fixedly connected to the bottom end of the insurance block (12).

2. The self-locking structure of an electric chain saw according to claim 1, wherein: The front and rear sides of the locking bracket (4) are arc-shaped and are in contact with the inner side of the outer shell (1). The contact surface between the outer shell (1) and the locking bracket (4) is adapted to the arc-shaped surfaces on the front and rear sides of the locking bracket (4).

3. The self-locking structure of an electric chain saw according to claim 1, wherein: The back surface of the fixed bracket (6) is fixedly connected to the inner wall of the back surface of the outer shell (1).

4. The self-locking structure of an electric chain saw according to claim 3, wherein: The clamping plate assembly includes a limiting plate (8), the outer periphery of the limiting plate (8) is clamped inside the clamping groove (7), and an elastic clip (9) is fixedly connected to the bottom end of the limiting plate (8).

5. The self-locking structure of an electric chain saw according to claim 4, wherein: There are two sets of the elastic clips (9), and the two sets of the elastic clips (9) are symmetrically arranged front and rear at the bottom end of the limiting plate (8). The limiting rod (10) is located between the two sets of the elastic clips (9).

6. The self-locking structure of an electric chain saw according to claim 1, wherein: The trigger assembly includes a pressing trigger (13), the inner wall of the bottom end of the pressing trigger (13) is fixedly connected to the bottom end of the insurance block (12), and an elastic member (14) is arranged inside the pressing trigger (13).

7. The self-locking structure of an electric chain saw according to claim 6, wherein: Both the front and rear ends of the elastic member (14) are clamped inside the outer shell (1).

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