Auxiliary device for starting chain saw

Abstract

The utility model discloses an auxiliary device for chain saw starting, which comprises a shell and a pull rope starting device installed in the shell, one end of a pull rope in the pull rope starting device is wound in the pull rope starting device, the other end of the pull rope penetrates out of the shell, and a grab handle is arranged at the end, penetrating out of the shell, of the pull rope. A connecting part connected with the pull rope is arranged on the side wall of the grab handle, a guide assembly is arranged on the shell and comprises a mounting seat, the mounting seat is mounted on the outer wall of the shell, a through groove allowing the pull rope to penetrate through is formed in the mounting seat, and the through groove is communicated with the interior of the shell; the guide rollers are symmetrically installed in the through grooves respectively, the guide rollers are located on the two sides of the pull rope respectively and abut against the pull rope, the positions, making contact with the pull rope, of the guide rollers are arranged in a sunken mode, and the pull rope is located in the sunken positions of the guide rollers. The problem that the pull rope is damaged due to friction during long-time use can be avoided, and then the service life of the pull rope is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a starting device for oil saw, especially to an auxiliary device for oil saw starting. BACKGROUND

[0002] In the common oil saw, when starting, the oil saw is generally started by the user through the use of the pull rope starting device, and when working, the pull rope starting device is manually pulled by the user to drive the starting wheel to rotate, and with the rotation of the starting wheel, the crankshaft in the engine can be driven to rotate, and with the rotation of the crankshaft, the piston can be driven to compress the mixed gas, and the mixed gas is ignited by ignition to start the engine, and finally after the starting process is completed, the return spring can automatically retract the pull rope, preparing for the next start.

[0003] In the prior art, such as the cylinder starter for oil saw with publication number CN213298169U, it comprises a starting shield, a starting handle, a starting rope, a winding wheel and a reset coil spring, the winding wheel is provided with a guide portion, the guide portion is provided with a limiting groove, the winding wheel is provided with a starting wheel capable of rotating relative to the winding wheel, the starting wheel is provided with a linkage rod capable of rotating, the linkage rod is inserted into the limiting groove, when the winding wheel is rotated by the starting handle, the linkage rod moves along the limiting groove towards the direction of the flywheel and rotates with the winding wheel, the linkage rod can abut against the flywheel to drive the flywheel to rotate, when the starting handle is released, the reset coil spring drives the winding wheel to rotate reversely to reset, the linkage rod moves along the limiting groove towards the direction away from the flywheel, and the linkage rod is separated from the flywheel. The utility model cooperates the linkage rod in the limiting groove with the flywheel connected to the crankshaft of the oil saw to link and drive, the transmission relationship is simpler, the starter can better drive the flywheel to rotate, and the starting of the engine is realized.

[0004] However, it still has some deficiencies, such as lacking the guide structure for the pull rope, so that when the pull rope is pulled or the pull rope is reset, abrasion will be caused between the pull rope and the shell of the pull rope starting device body, and as a result, the pull rope will be seriously abraded after the pull rope starting device is used for a long time, and thus the service life of the pull rope starting device will be reduced. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of providing an auxiliary device for oil saw starting with a guide structure.

[0006] The utility model discloses a technical scheme that solves the above technical problem is adopted: a kind of auxiliary device for chain saw starting, including the shell being connected with chain saw and the pull rope starting device being installed in shell, the pull rope in pull rope starting device one end is wound in pull rope starting device and the other end is passed out shell, the pull rope is provided with handle in the end passing out shell, the side wall of handle is provided with the connecting portion being connected with pull rope, the shell is provided with guide assembly, the pull rope passes through guide assembly after passing out shell, the guide assembly includes mounting seat, the mounting seat is installed on the outer wall of shell, the mounting seat is provided with the through slot for the pull rope to pass through, and the through slot is communicated with shell interior;Guide roller, the guide roller is equipped with not less than two, the guide roller is respectively symmetrically installed in through slot, the guide roller is respectively located the two sides of pull rope and is in abutment with pull rope, the guide roller is all set in recess at pull rope contact, and the pull rope is located in the recess on guide roller.

[0007] The utility model further preferably provides that the through slot is provided with a sliding groove at the connection with the guide roller, a spring telescopic rod is arranged in the sliding groove, the telescopic end of the spring telescopic rod is provided with a connecting block in sliding connection with the sliding groove, and the connecting block is connected with the guide roller on the side away from the sliding groove.

[0008] The utility model further preferably provides that the guide roller includes a connecting rod, the two ends of the connecting rod are respectively connected with the connecting block, a roller body is rotatably sleeved on the connecting rod, and a first protective layer is arranged on the outer wall of the roller body.

[0009] The utility model further preferably provides that the handle includes a handle body, the handle body is connected with the connecting portion, the top and bottom of the handle body are respectively provided with an adjusting groove, a screw rod is arranged in the adjusting groove, and an adjusting rod is slidably arranged in the adjusting groove.

[0010] The utility model further preferably provides that the connecting portion includes a first connecting head, the first connecting head is connected with the pull rope, the first connecting head is provided with a first recess on the side wall away from the pull rope, the first connecting head is provided with a mounting hole for the pull rope to pass in on the side wall close to the pull rope, a second connecting head, one side of the second connecting head is connected with the side wall of the handle, the other side of the second connecting head is screwed with the first connecting head, the second connecting head is provided with a second recess on the side wall close to the first connecting head, and wherein the first recess and the second recess form an accommodating groove for accommodating the pull rope knot after the first connecting head and the second connecting head are connected.

[0011] The utility model further preferably provides that a first bearing is arranged between the two ends of the connecting rod and the roller body.

[0012] The further preferred scheme of the utility model is that: the groove wall in the adjusting groove is provided with a limiting groove, the adjusting rod is provided with a second bearing, the inner ring of the second bearing is fastened with the outer wall of the adjusting rod, and the outer wall of the outer ring of the second bearing is provided with a limiting block in sliding connection with the limiting groove.

[0013] The further preferred scheme of the utility model is that: the adjusting rod is provided with a knob at one end away from the handle body.

[0014] The further preferred scheme of the utility model is that: the first connecting head is provided with a second protective layer on the outer wall at one end away from the second connecting head.

[0015] Compared with the prior art, the utility model has the advantages that when the pull rope is pulled or reset, the guide roller can be driven to rotate, thereby avoiding friction between the pull rope and the shell, so that the problem of damage of the pull rope due to friction in long-term use can be avoided, thereby prolonging the service life of the pull rope, and in order to ensure the stability of the pull rope when moving on the guide roller, the contact part between the guide roller and the pull rope is concave, and the pull rope is located in the concave part on the guide roller, so that the pull rope can move on the guide roller, thereby making the pull rope more stable when being pulled or reset. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be further described in detail below by combining with the drawings and preferred embodiments, but the person skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be regarded as the limitation to the scope of the utility model. In addition, unless specifically pointed out, the drawings only schematically show the composition or structure of the described object conceptually and can contain exaggerated display, and the drawings are not necessarily drawn to scale.

[0017] Figure 1 It is the structural schematic diagram of the utility model;

[0018] Figure 2 It is the three-dimensional structural schematic diagram of the utility model;

[0019] Figure 3 It is the rear view three-dimensional structural schematic diagram of the utility model;

[0020] Figure 4 It is the sectional view of the guide assembly in the utility model;

[0021] Figure 5 It is the structural schematic diagram of the handle in the utility model;

[0022] Figure 6 It is the sectional view of the guide roller in the utility model;

[0023] Figure 7 It is the structural schematic view of the connecting part in the utility model;

[0024] Figure 8 It is Figure 5 It is the enlarged view of A in the utility model.

[0025] In the figure: 1, the shell; 2, pull rope starting device; 3, pull rope; 31, knot; 4, guide assembly; 41, mounting seat; 42, through slot; 43, guide roller; 431, connecting rod; 432, roller body; 433, first protective layer; 434, first bearing; 44, sliding slot; 45, spring telescopic rod; 46, connecting block; 5, connecting part; 51, first connecting head; 52, second connecting head; 53, accommodating groove; 54, second protective layer; 6, handle; 61, handle body; 611, adjusting groove; 62, screw rod; 63, limiting slot; 64, second bearing; 65, limiting block; 7, adjusting rod; 8, knob. DETAILED DESCRIPTION

[0026] The preferred embodiments of the utility model will be described in detail below with reference to the drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive, exemplary, and should not be interpreted as limiting the scope of protection of the utility model.

[0027] It should be noted that: similar signs represent similar items in the following drawings, therefore, once an item is defined in one drawing, it can not be further defined and explained in the subsequent drawings.

[0028] The embodiment mainly describes the structure of an auxiliary device for starting oil saw, and is as follows:

[0029] As Figures 1-8The auxiliary device for starting the oil saw shown in the figure comprises a housing 1 connected with the oil saw and a pull rope starting device 2 installed in the housing 1, and a pull rope 3 wound in the pull rope starting device 2, one end of which is wound with the pull rope starting device 2 and the other end of which passes out of the housing 1, and a handle 6 is arranged on the pull rope 3 passing out of the housing 1 for facilitating the user to pull the pull rope 3, and a connecting part 5 connected with the pull rope 3 is arranged on the side wall of the handle 6, and in order to avoid friction between the pull rope 3 and the housing 1 when the pull rope 3 is pulled or reset, a guide assembly 4 is arranged on the housing 1, and the pull rope 3 needs to pass through the guide assembly 4 after passing out of the housing 1, and the connecting part 5 and the handle 6 are both located at the end of the guide assembly 4 away from the housing 1, because the pull rope 3 can be wound in the pull rope starting device 2 again after being pulled out, so the connecting part 5 is in abutment with the guide assembly 4 on the side away from the handle 6, wherein the guide assembly 4 comprises a mounting seat 41 connected with the outer wall of the housing 1, and a through slot 42 for the pull rope 3 to pass through is formed in the mounting seat 41, and the through slot 42 is in communication with the inside of the housing 1, and then not less than two guide rollers 43 are symmetrically arranged in the through slot 42, and the two guide rollers 43 are respectively located on both sides of the pull rope 3 and are in abutment with the pull rope 3, so that the guide rollers 43 can be driven to rotate when the pull rope 3 is pulled or reset, thereby avoiding friction between the pull rope 3 and the housing 1, which can avoid the problem of damage to the pull rope 3 due to friction in long-term use, thereby prolonging the service life of the pull rope 3, and in order to ensure the stability of the pull rope 3 when moving on the guide rollers 43, the guide rollers 43 are recessed at the positions in contact with the pull rope 3, and the pull rope 3 is located in the recessed positions on the guide rollers 43, which can avoid the pull rope 3 from moving on the guide rollers 43, thereby making the pull rope 3 more stable when being pulled or reset.

[0030] Further, a sliding groove 44 is formed at the connection between the through slot 42 and the guide roller 43, and a spring telescopic rod 45 is arranged in the sliding groove 44, and a connecting block 46 in sliding connection with the sliding groove 44 is arranged at the telescopic end of the spring telescopic rod 45, and the connecting block 46 is connected with the guide roller 43 on the side away from the sliding groove 44, so that the distance between the guide rollers 43 can be adjusted by the extension or shortening of the spring telescopic rod 45, so that the guide assembly 4 can guide pull ropes 3 of different diameters, thereby improving the practicability of the guide assembly 4;

[0031] The guide roller 43 comprises a connecting rod 431 connected with the connecting block 46 at both ends, and a roller body 432 rotatably sleeved on the connecting rod 431. When the user pulls the pull rope 3, the pull rope 3 can drive the roller body 432 to rotate on the connecting rod 431. In order to reduce the wear of the roller body 432 on the pull rope 3, a first protective layer 433 made of flexible rubber is arranged on the outer wall of the roller body 432, which further prolongs the service life of the pull rope 3. In order to ensure the smooth rotation of the roller body 432, a first bearing 434 is arranged between the connecting rod 431 and the roller body 432 at both ends, and the inner ring of the first bearing 434 is connected with the connecting rod 431, and the outer ring of the first bearing 434 is connected with the inner wall of the roller body 432.

[0032] The handle 6 comprises a handle body 61 connected with the connecting part 5, and an adjusting groove 611 is arranged at the top and bottom of the handle body 61 respectively, and a screw rod 62 is arranged in the adjusting groove 611, and an adjusting rod 7 is slidably arranged in the adjusting groove 611, and a screw hole is arranged on the adjusting rod 7 and screwed with the screw rod 62. When the length of the handle 6 needs to be adjusted, the adjusting rod 7 is rotated to rotate out or rotate into the adjusting hole, so that the length of the handle 6 is elongated or shortened. In this way, the length of the handle 6 can be adjusted according to the size of the user's palm, so as to facilitate the user to pull the pull rope 3.

[0033] Further, in order to avoid the problem of the adjusting rod 7 being separated from the adjusting groove 611 when rotating the adjusting rod 7, a limiting groove 63 is formed in the groove wall of the adjusting groove 611, and a second bearing 64 is sleeved on the adjusting rod 7, and the inner ring of the second bearing 64 is tightly connected with the outer wall of the adjusting rod 7, and a limiting block 65 is arranged on the outer wall of the outer ring of the second bearing 64 and slidably connected with the limiting groove 63. When the adjusting rod 7 is rotated, the inner ring of the second bearing 64 is rotated, and the outer ring of the second bearing 64 can drive the limiting block 65 to move in the limiting groove 63. When the limiting block 65 moves to the end of the limiting groove 63, the limiting block 65 cannot continue to move, and the range of movement of the adjusting rod 7 is limited, so as to ensure the reliability of the rotation of the adjusting rod 7. In order to facilitate the user to rotate the adjusting rod 7, a knob 8 is arranged on the end of the adjusting rod 7 away from the handle body 61. When the adjusting rod 7 needs to be rotated, the knob 8 is rotated to rotate the adjusting rod 7.

[0034] The connecting part 5 comprises a first connecting head 51 connected with the pull rope 3 and a second connecting head 52 screwed with the first connecting head 51, and the second connecting head 52 is connected with the handle 6 on the side far away from the first connecting head 51, then a first recess is arranged on the side wall of the first connecting head 51 far away from the pull rope 3, and a mounting hole for the pull rope 3 to pass through is arranged on the side wall of the first connecting head 51 close to the pull rope 3, so that when the pull rope 3 is connected with the first connecting head 51, the pull rope 3 passes through the mounting hole into the first recess of the first connecting head 51, then the pull rope 3 is knotted, and the pull rope 3 in the first recess forms a knot 31 with a size larger than the mounting hole, so that the pull rope 3 cannot be separated from the first connecting head 51, thereby facilitating the connection of the handle 6 with the pull rope 3 and the accommodation of the knot 31 by the connecting part 5, and a second recess is arranged on the side wall of the second connecting head 52 close to the first connecting head 51, so that when the first connecting head 51 and the second connecting head 52 are connected, the first recess and the second recess form an accommodating groove 53 for accommodating the knot 31 of the pull rope 3.

[0035] Further, the first connecting head 51 of the connecting part 5 abuts against the mounting seat 41 in the guide assembly 4 when the pull rope 3 is reset, so that in order to ensure the stability of the abutment between the connecting part 5 and the guide assembly 4, the first connecting head 51 is tapered at the end far away from the second connecting head 52, so that when the pull rope 3 is reset, the tapered part of the first connecting head 51 can enter the through groove 42 on the mounting seat 41, thereby ensuring the stability of the abutment between the connecting part 5 and the guide assembly 4, and in order to avoid damage to the connecting part 5 or the guide assembly 4 due to the collision between the connecting part 5 and the guide assembly 4 when the pull rope 3 is reset, a second protective layer 54 made of elastic rubber is arranged on the outer wall of the first connecting head 51, thereby prolonging the service life of the guide assembly 4 and the connecting part 5.

[0036] In the description of the utility model, it should be explained that the terms "upper", "lower", "front", "rear", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, structure and operation, so it cannot be understood as a limitation on the utility model.

[0037] The above has carried out the detailed introduction to the auxiliary device for the oil saw starting, the principle and implementation mode of the utility model have been described in this article by applying specific examples, the above embodiment is only used for helping understanding the utility model and core thought. It should be pointed out that, for ordinary skilled person in the art, on the premise of not departing from the principle of the utility model, the utility model can also be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claim.

Claims

1. An auxiliary device for starting a chainsaw, comprising a housing connected with the chainsaw and a pull cord starting device installed in the housing, one end of a pull cord in the pull cord starting device is wound in the pull cord starting device and the other end is drawn out of the housing, a handle is arranged at the end of the pull cord drawn out of the housing, a connecting part connected with the pull cord is arranged on the side wall of the handle, characterized in that: The shell is provided with a guide assembly, the pull rope passes through the guide assembly after passing through the shell, and the guide assembly comprises ​ A mounting seat is mounted on the outer wall of the shell, a through slot for the pull rope to pass through is formed in the mounting seat, and the through slot is in communication with the inside of the shell; Two or more guide rollers are symmetrically mounted in the through slot, the guide rollers are located on both sides of the pull rope and abut against the pull rope, the guide rollers are recessed at the positions where the guide rollers contact the pull rope, and the pull rope is located in the recesses of the guide rollers.

2. An auxiliary device for starting a chainsaw according to claim 1, characterized in that A sliding groove is formed in the through slot at the connection position of the guide roller, a spring telescopic rod is arranged in the sliding groove, a connecting block in sliding connection with the sliding groove is arranged at the telescopic end of the spring telescopic rod, and the connecting block is connected with the guide roller at the side away from the sliding groove.

3. A device for assisting the starting of a chainsaw according to any one of claims 1-2, characterized in that: The guide roller comprises a connecting rod, the connecting rod is connected with the connecting block at both ends, a roller body is rotatably arranged on the connecting rod, and a first protective layer is arranged on the outer wall of the roller body.

4. An auxiliary device for starting a chainsaw according to claim 1, characterized in that The handle comprises a handle body, the handle body is connected with the connecting part, an adjusting slot is arranged at the top and the bottom of the handle body, a screw rod is arranged in the adjusting slot, and an adjusting rod is slidably arranged in the adjusting slot.

5. An auxiliary device for starting a chainsaw according to claim 1, characterized in that: The connecting part comprises A first connecting head is connected with the pull rope, a first recess is arranged on the side wall away from the pull rope, and a mounting hole for the pull rope to pass through is arranged on the side wall close to the pull rope; A second connecting head is connected with the side wall of the handle at one side, the second connecting head is screwed with the first connecting head at the other side, and a second recess is arranged on the side wall close to the first connecting head; The first recess and the second recess form an accommodating groove for accommodating the knot of the pull rope after the first connecting head and the second connecting head are connected.

6. An auxiliary device for starting a chainsaw according to claim 3, characterized in that: First bearings are arranged at both ends between the connecting rod and the roller body.

7. An auxiliary device for starting a chainsaw according to claim 4, characterized in that: Limiting grooves are formed in the groove walls of the adjusting slots, second bearings are arranged on the adjusting rods, the inner rings of the second bearings are tightly connected with the outer walls of the adjusting rods, and limiting blocks in sliding connection with the limiting grooves are arranged on the outer walls of the outer rings of the second bearings.

8. An auxiliary device for starting a chainsaw according to claim 4, characterized in that: A knob is arranged at the end of the adjusting rod away from the handle body.

9. An auxiliary device for starting a chainsaw according to claim 5, characterized in that: The first connecting head is conically arranged at the end away from the second connecting head, and a second protective layer is arranged on the outer wall of the first connecting head.

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