Mini lithium battery chain saw capable of being adjusted without tool

Abstract

The mini lithium battery chain saw comprises a machine body and a chain piece, opposite through holes are formed in the machine body and the chain piece, a fixing shaft is fixedly connected in the through holes, an adjusting block is connected to the fixing shaft in a sliding mode, a sliding groove is formed in the fixing shaft, a plurality of clamping blocks are fixedly connected to the inner bottom face of the sliding groove, and the clamping blocks are fixedly connected to the inner bottom face of the sliding groove. Fixing blocks are fixedly connected to the inner side walls of the adjusting blocks, so that when adjustment is needed, the tightness degree of the chain piece clamped by the machine body can be adjusted by sliding the adjusting blocks, the chain piece can be adjusted conveniently, when the chain piece is replaced, the adjusting blocks are taken down, the fixing shafts can be pulled out, the chain piece can be replaced, operation is simple, tools are not needed, and cost is reduced. The method is more convenient and easy to implement.

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 mini lithium electric chain saw with tool-free adjustment. Background Art

[0002] Lithium chain saw is an electric tool powered by lithium battery, which is mainly composed of motor, saw blade and chain. Lithium chain saw uses chain to move, and different saw blades and chains can be replaced according to different work needs. Lithium 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 CN206993799U comprises a guide plate, a chain, a guide plate seat and a body, wherein the chain is sleeved on the edge of the guide plate, and the guide plate and the guide plate seat are detachably connected; a flywheel and a transmission mechanism are provided on the guide plate seat, and the chain is meshingly connected to the flywheel; the transmission mechanism comprises a first bevel gear and a second bevel gear, the first bevel gear is meshingly connected to the flywheel, and the second bevel gear is meshingly connected to the first bevel gear; a reducer and a motor are provided in the body, the input shaft of the reducer is connected to the motor, and the output shaft is movably connected to the second bevel gear; a connecting rod is provided between the body and the guide plate seat, and the connecting rod is detachably connected to the body.

[0004] However, the chain piece of the above-mentioned lithium-ion chain saw is connected to the body by bolts. When replacing or adjusting the angle of the chain piece, tools are needed to remove the bolts before adjusting or replacing the chain piece, which is troublesome and requires carrying tools, which is inconvenient. Utility Model Content

[0005] The utility model provides a mini lithium-electric chain saw with tool-free adjustment, and the tightness of the chain piece can be controlled only by adjusting an adjustment block, thereby facilitating adjustment.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a mini lithium-ion chain saw with tool-free adjustment, comprising a body and a chain piece rotatably connected to the body, characterized in that the body and the chain piece are both provided with relative through holes, a fixed shaft is fixedly connected in the through hole, the fixed shaft is located at one side of the chain piece and is slidably connected with an adjustment block, a slide groove is provided on the fixed shaft, the adjustment block is located in the slide groove and slides, a plurality of clamping blocks are fixedly connected on the bottom surface of the slide groove, a fixed block that can form an abutment with the clamping block is fixedly connected to the inner side wall of the adjustment block, when the fixed shaft is inserted into the through hole, the adjustment block is slid so that the adjustment block forms an abutment with the body to clamp the chain piece, and at this time, the clamping block forms an abutment with the fixed block.

[0007] A further preferred technical solution of the utility model is that the opposite surfaces of the fixing block and the clamping block are provided with inclined surfaces and planes that can fit each other, and when the fixing block is clamped between any two clamping blocks, the plane of the fixing block fits with the plane of one of the clamping blocks, and the inclined surface of the fixing block fits with the inclined surface of the other clamping block.

[0008] A further preferred technical solution of the utility model is that the width of the clamping block gradually decreases from one end close to the chain plate to one end away from the chain plate, and the width of the fixing block gradually increases from one end close to the chain plate to one end away from the chain plate.

[0009] A further preferred technical solution of the utility model is: the adjustment block includes two semicircular blocks, one of which is fixedly connected to a connecting block, and the other semicircular block is provided with a groove for facilitating the connecting block to be inserted, and when the fixed block and the clamping block are clamped with each other, the connecting block is inserted into the groove.

[0010] A further preferred technical solution of the utility model is: a limiting block is fixedly connected to the connecting block, and two groups of limiting grooves are provided on the inner side wall of the groove to facilitate the limiting block to be inserted. When the limiting block is engaged with one group of limiting grooves, the fixed block and the engaging block abut against each other, and when the limiting block is engaged with the other group of limiting grooves, the fixed block and the engaging block are separated.

[0011] A further preferred technical solution of the utility model is that a non-slip pad is fixedly connected to a wall of one side of the semicircular block close to the machine body.

[0012] A further preferred technical solution of the utility model is that the limit block is elastic.

[0013] A further preferred technical solution of the utility model is: a limiting block is fixedly connected to one end of the fixed shaft away from the adjusting block, a through hole is provided on the machine body and the chain plate for the limiting block to pass through and communicate with the through hole, the through hole is communicated with the outside world, an arc groove is provided on the machine body and communicated with the through hole, and when the limiting block is located in the through hole and the fixed shaft is rotated, the limiting block slides into the arc groove through the through hole.

[0014] A further preferred technical solution of the utility model is: a protrusion is fixedly connected to the limiting block, and a slot for facilitating the insertion of the card block is provided in the arc-shaped groove. When the protrusion is inserted into the slot, the limiting block abuts against the bottom surface of the arc-shaped groove.

[0015] A further preferred technical solution of the utility model is that both the protrusion and the groove are provided with arc surfaces.

[0016] Compared with the prior art, the utility model has relative through holes on the machine body and the chain plate, a fixed shaft is fixedly connected in the through hole, the fixed shaft is located on one side of the chain plate and is slidably connected to an adjusting block, a sliding groove is provided on the fixed shaft, a plurality of clamping blocks are fixedly connected on the bottom surface of the sliding groove, and a fixed block is fixedly connected on the inner wall of the adjusting block. Therefore, when adjustment is needed, the tightness of the machine body clamping the chain plate can be adjusted by sliding the adjusting block, thereby facilitating the adjustment of the chain plate, and when replacing the chain plate, the adjusting block can be removed and the fixed shaft can be pulled out to replace the chain plate. The operation is simple and does not require tools, which is more convenient and easy to implement. 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 The explosion of the utility model Figure 1 ;

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

[0021] Figure 4 It is an enlarged view of the B portion of the convex 3 of the present utility model;

[0022] Figure 5 The explosion of the utility model Figure 2 ;

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

[0024] Figure 7 The utility model is a cross-sectional view Figure 1 ;

[0025] Figure 8 For this utility model Figure 7 The enlarged view of point D in the middle;

[0026] Fig. 9 The utility model is a cross-sectional view Figure 2 ;

[0027] Fig.10 For this utility model Fig. 9Enlarged view of point E in the middle;

[0028] Fig.11 For this utility model Fig.10 Enlarged view of point F in the middle.

[0029] In the figure: 1, machine body; 2, chain plate; 3, fixed shaft; 4, semicircular block; 5, through hole; 6, limiting block; 7, through hole; 8, slide groove; 9, protrusion; 10, connecting block; 11, groove; 12, limit block; 13, limit groove; 14, arc groove; 15, clamping groove; 16, inclined surface; 17, plane; 18, fixed block; 19, clamping block. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] Figure 1-Figure 11 As shown, a mini lithium chain saw with tool-free adjustment includes a body 1 and a chain piece 2 rotatably connected to the body 1, the body 1 and the chain piece 2 are both provided with opposite through holes 5, a fixed shaft 3 is fixedly connected in the through hole 5, the fixed shaft 3 is located at one side of the chain piece 2 and is slidably connected with an adjustment block, a slide groove 8 is provided on the fixed shaft 3, the adjustment block is located in the slide groove 8 and slides, a plurality of blocks 19 are fixedly connected on the bottom surface of the slide groove 8, a fixed block 18 that can form an abutment with the block 19 is fixedly connected on the inner side wall of the adjustment block, and an inclined surface 16 and a plane 17 that can fit each other are provided on the opposite surfaces of the fixed block 18 and the block 19,

[0033] Figure 3-Figure 11 As shown, when installing the chain piece 2, the chain piece 2 is inserted into the body 1 and the fixed shaft 3 is passed through the through holes 5 on the chain piece 2 and the body 1, and then the adjusting block is slid. As the adjusting block slides, the inclined surface 16 on the fixed block 18 abuts against the inclined surfaces 16 on different clamping blocks 19 until the adjusting block pushes the body 1 to clamp the chain piece 2. At this time, the sliding of the adjusting block is stopped. When the fixed block 18 is clamped between any two clamping blocks 19, the plane 17 of the fixed block 18 fits with the plane 17 of one of the clamping blocks 19 to fix the fixed block 18 and the adjusting block, thereby preventing the adjusting block from sliding when the chain saw is in use. This design facilitates the fixing of the chain piece 2.

[0034] Figure 5-Figure 11As shown, the width of the blocking block 19 gradually decreases from the end close to the chain plate 2 to the end away from the chain plate 2, and the width of the fixing block 18 gradually increases from the end close to the chain plate 2 to the end away from the chain plate 2. This design limits the direction of the inclined surface 16 so that the fixing block 18 can only slide toward the end close to the chain plate 2.

[0035] Figure 3-Figure 11 As shown, the adjustment block includes two semicircular blocks 4, one of which is fixedly connected to a connecting block 10, and the other semicircular block 4 is provided with a groove 11 for the connecting block 10 to be inserted into. During installation, the connecting block 10 is inserted into the groove 11 to complete the installation. This design facilitates installation.

[0036] Figure 3-Figure 11 As shown, a limiting block 12 is fixedly connected to the connecting block 10, and the limiting block 12 is elastic. Two groups of limiting grooves 13 for the limiting block 12 to be inserted into are provided on the inner wall of the groove 11. Therefore, when the chain piece 2 needs to be adjusted, the two semicircular blocks 4 are pulled outward. At this time, the limiting block 12 is disengaged from one group of limiting grooves 13 and deformed under the pressure of the inner wall of the groove 11. As the deformed limiting block 12 is pulled, it slides into the other group of limiting grooves 13. At this time, the inner diameter and outer diameter of the adjusting block are both enlarged, and the fixed block 18 is separated from the clamping block 19. At this time, the adjusting block can be freely slid to control the tightness of the body 1 on the chain piece 2, thereby facilitating the adjustment of the angle of the chain piece 2.

[0037] Figure 3-Figure 11 As shown, when the chain plate 2 needs to be removed, the two semicircular blocks 4 are continuously pulled outward until the limit block 12 is separated from the two sets of limit grooves 13. At this time, the two semicircular blocks 4 are separated, and finally the chain plate 2 can be removed and replaced by pulling out the fixed shaft 3. The above two operations are simple and fast, easy to complete, and do not require tools, which is convenient to operate and improves convenience.

[0038] Figure 3-Figure 11 As shown, a non-slip pad is fixedly connected to a side wall of the semicircular block 4 close to the body 1, so when the semicircular block 4 abuts against the body 1, the non-slip pad increases the friction between the semicircular block 4 and the body 1, thereby preventing the semicircular block 4 from rotating.

[0039] Figure 3-Figure 11 As shown, a limiting block 6 is fixedly connected to one end of the fixed shaft 3 away from the adjusting block, and a through hole 7 is provided on the machine body 1 and the chain plate 2 for the limiting block 6 to pass through and communicate with the through hole 5, and the through hole 7 is communicated with the outside world. An arc groove 14 communicating with the through hole 7 is provided on the machine body 1. When the limiting block 6 is located in the through hole 7 and the fixed shaft 3 is rotated, the limiting block 6 slides into the arc groove 14 through the through hole 7.

[0040] Figure 3-Figure 11As shown, when the fixed shaft 3 is inserted into the through hole 5, the limiting block 6 is aligned with the through hole 7 and inserted until the fixed shaft 3 is in contact with the bottom surface of the through hole 5. At this time, the limiting block 6 is opposite to the arc groove 14. The fixed shaft 3 is further rotated to make the limiting block 6 slide into the arc groove 14. This design enables the limiting block 6 to further limit the body 1 when the adjusting block squeezes the body 1, so that the adjusting block can better clamp the chain plate 2.

[0041] Figure 3-Figure 11 As shown, a protrusion 9 is fixedly connected to the limiting block 6, and a slot 15 for facilitating the insertion of the card block 19 is provided in the arc groove 14. When the protrusion 9 is inserted into the slot 15, the limiting block 6 forms abutment with the inner bottom surface of the arc groove 14. Therefore, when the limiting block 6 slides into the arc groove 14 and forms abutment with the bottom surface of the arc groove 14, the protrusion 9 is inserted into the slot 15, thereby fixing the limiting block 6 to prevent the fixed shaft 3 from rotating when the adjusting block slides and affecting the sliding of the adjusting block. At the same time, since both the protrusion 9 and the groove 11 are provided with arc surfaces, the protrusion 9 can be more easily inserted into the slot 15 for fixing. This design improves the convenience of operation and makes the operation more convenient and easy to implement.

[0042] The above is an introduction to a mini lithium battery chain saw with tool-free adjustment provided by the utility model. This article uses specific examples to illustrate the principle and implementation 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, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A mini lithium battery chain saw with tool-free adjustment, comprising a body and a chain piece rotatably connected to the body, characterized in that: The body and the chain plate are both provided with opposite through holes, and a fixed shaft is fixedly connected in the through hole, and the fixed shaft is located at one side of the chain plate and is slidably connected with an adjusting block, and a sliding groove is provided on the fixed shaft, and the adjusting block is located in the sliding groove and slides, and a plurality of clamping blocks are fixedly connected on the bottom surface of the sliding groove, and a fixed block that can form an abutment with the clamping block is fixedly connected on the inner side wall of the adjusting block, and when the fixed shaft is inserted into the through hole, the adjusting block is slid so that the adjusting block forms an abutment with the body to clamp the chain plate, and at this time, the clamping block forms an abutment with the fixed block.

2. A mini lithium-ion chain saw with tool-free adjustment according to claim 1, characterized in that: The fixed block and the clamping block are provided with mutually fitting inclined surfaces and planes on their opposite surfaces. When the fixed block is clamped between any two clamping blocks, the plane of the fixed block fits with the plane of one of the clamping blocks, and the inclined surface of the fixed block fits with the inclined surface of the other clamping block.

3. The mini lithium chain saw with tool-free adjustment according to claim 1, characterized in that: The width of the clamping block gradually decreases from one end close to the chain plate to one end away from the chain plate, and the width of the fixing block gradually increases from one end close to the chain plate to one end away from the chain plate.

4. The mini lithium chain saw with tool-free adjustment according to claim 1, characterized in that: The adjusting block comprises two semicircular blocks, one of which is fixedly connected with a connecting block, and the other semicircular block is provided with a groove for facilitating the connecting block to be inserted. When the fixed block and the clamping block are mutually clamped, the connecting block is inserted into the groove.

5. The mini lithium chain saw with tool-free adjustment according to claim 4, characterized in that: The connecting block is fixedly connected to the limiting block, and the inner side wall of the groove is provided with two groups of limiting grooves for the limiting block to be inserted into. When the limiting block is engaged with one group of limiting grooves, the fixed block and the engaging block abut against each other, and when the limiting block is engaged with the other group of limiting grooves, the fixed block and the engaging block are separated.

6. The mini lithium chain saw with tool-free adjustment according to claim 4, characterized in that: A non-slip pad is fixedly connected to a wall of the semicircular block close to one side of the machine body.

7. The mini lithium chain saw with tool-free adjustment according to claim 5, characterized in that: The limiting block is elastic.

8. The mini lithium chain saw with tool-free adjustment according to claim 1, characterized in that: A limiting block is fixedly connected to one end of the fixed shaft away from the adjusting block. A through hole is provided on the machine body and the chain plate for the limiting block to pass through and communicate with the through hole. The through hole is communicated with the outside world. An arc groove communicated with the through hole is provided on the machine body. When the limiting block is located in the through hole and the fixed shaft is rotated, the limiting block slides into the arc groove through the through hole.

9. The mini lithium chain saw with tool-free adjustment according to claim 8, characterized in that: The limiting block is fixedly connected with a protrusion, and the arc-shaped groove is provided with a slot for the block to be inserted into. When the protrusion is inserted into the slot, the limiting block abuts against the bottom surface of the arc-shaped groove.

10. The mini lithium chain saw with tool-free adjustment according to claim 9, characterized in that: The protrusion and the groove are both provided with arc surfaces.

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