CN217943620U

CN217943620U - Chain saw

Info

Publication number: CN217943620U
Application number: CN202221668111.6U
Authority: CN
Inventors: 黄舒; 张林高
Original assignee: Globe Jiangsu Co Ltd
Current assignee: Globe Jiangsu Co Ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-12-02
Anticipated expiration: 2032-06-29

Abstract

The utility model provides a chain saw relates to garden instrument technical field, include: the shell is provided with a mounting groove; the guide plate is arranged on the shell, and a saw chain is arranged on the guide plate in the circumferential direction; the tensioning assembly is arranged in the mounting groove, is connected with the guide plate and can adjust the tightness of the saw chain; wherein, set up on the mounting groove lateral wall and inlay and establish the hole, tensioning assembly's one end with the diapire fixed connection of mounting groove, the other end stretches into inlay and establish downtheholely and can inlay and establish downthehole rotation. The utility model discloses improve the lower problem of stability is connected with the casing to overspeed device tensioner in the chain saw at present stage, can reduce the cost of chain saw on the one hand, on the other hand still can promote the stability that the tensioning assembly connects.

Description

Chain saw

Technical Field

The utility model relates to a garden instrument technical field especially relates to a chain saw.

Background

The chain saw is a portable saw taking gasoline, electric power or hydraulic pressure and the like as power, and is mainly used for felling and building materials; during actual use of the chainsaw, the cutting saw chain of the chainsaw elongates and becomes slack on the guide plate as the links in the cutting saw chain wear in use. In order to solve the above problems, most chain saws are provided with a saw chain tensioning device, and the guide plate is moved in the extending direction of the saw chain, so that the tensioning force of the saw chain on the guide plate is controlled.

Whether the tensioning device is stable directly affects the use of the chain saw. For example, when the tensioner is installed unstably, the difficulty of adjusting the tension of the chain saw is greatly increased.

Therefore, there is a need for an improved chain saw.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a chain saw for solving the problem of low connection stability between the tension device and the housing in the chain saw in the prior art.

To achieve the above and other related objects, the present invention provides a chain saw, comprising: the shell is provided with a mounting groove; the guide plate is arranged on the shell, and a saw chain is arranged on the guide plate in the circumferential direction; the tensioning assembly is arranged in the mounting groove, is connected with the guide plate and can adjust the tightness of the saw chain; wherein, set up on the mounting groove lateral wall and inlay and establish the hole, tensioning assembly's one end with the diapire fixed connection of mounting groove, the other end stretches into inlay and establish downtheholely and can inlay and establish downthehole rotation.

In an embodiment of the present invention, the tension assembly includes a fixing portion, an adjusting portion and a transmission member; the fixing part is fixedly connected with the bottom wall of the mounting groove through a pin, and a plurality of groove positions and through holes matched with the transmission part are formed in the fixing part; the adjusting part is connected with the fixing part in a sliding manner through the transmission part; the transmission component is in transmission connection with the adjusting part; one end of the transmission component extends into the embedding hole.

In an embodiment of the present invention, the fixing portion includes a first fixing portion and a second fixing portion vertically and fixedly connected to the first fixing portion; the transmission member includes: the driving bevel gear is rotationally connected to the first fixing part; the driven helical gear is rotationally connected to the second fixing part, is positioned below the driving helical gear and is meshed with the driving helical gear; and one end of the transmission rod is coaxially fixed with the driven bevel gear and is in transmission connection with the adjusting part, and the other end of the transmission rod extends into the embedding hole.

In an embodiment of the present invention, the mounting groove includes a first mounting groove and a second mounting groove, wherein the first fixing portion and the driving helical gear are disposed in the first mounting groove; the second fixed part, the regulating part driven helical gear with the transfer line sets up in the second mounting groove, the second fixed part through the pin with the diapire fixed connection of second mounting groove, just inlay and establish the hole and set up the second mounting groove is close to on the lateral wall of saw chain.

In an embodiment of the present invention, the driving helical gear is rotatably connected to the first fixing portion through a first connecting shaft, and the first connecting shaft is kept away from the one end of the driving helical gear is provided with a knob.

In an embodiment of the present invention, one end of the transmission rod is passed through the driven helical gear and is coaxially fixed with the driven helical gear, and the other end is stretched into the embedding hole, and the diameter of the transmission rod is matched with the diameter of the embedding hole.

In an embodiment of the present invention, a thread is disposed in the middle of the transmission rod, and the transmission rod is connected to the adjusting portion through the thread.

In an embodiment of the present invention, a sidewall of the adjusting portion extends to a sidewall of the second mounting groove to form a rib, and the rib is located at a side away from the driving bevel gear and the embedding hole; and a first blocking wall matched with the blocking edge is arranged on the side wall of the second mounting groove and used for limiting the moving range of the adjusting part along the length direction of the transmission rod.

In an embodiment of the present invention, a second retaining wall is further disposed on the side wall of the second mounting groove, and is used for limiting the movement range of the adjusting portion along the width direction of the transmission rod.

In an embodiment of the present invention, the adjusting portion is provided with a second connecting shaft, and the adjusting portion is connected to the guide plate through the second connecting shaft.

As mentioned above, the chain saw of the present invention has the following advantages:

1. the bottom wall of fixed part and mounting groove is fixed through the pin, and the connection stability of multiplicable tensioning assembly on the casing, in addition, the one end that the fixed part was kept away from to the transfer line stretches into inlaying of mounting groove and establishes the hole, can realize tensioning assembly's quick fixation, has improved the stability that tensioning assembly and casing are connected.

2. The utility model discloses in the inside wall setting through the mounting groove be the first fender wall and the second fender wall of echelonment, and be formed with the flange on the lateral wall of regulating part, the flange keeps off the wall butt with the first fender wall and the second of mounting groove to realize the restriction of regulating part control range.

Drawings

FIG. 1 is an isometric view of one embodiment of a chain saw of the present invention;

FIG. 2 illustrates a partial schematic view of an embodiment of a chain saw according to the present invention;

FIG. 3 is a schematic view of a chain saw of the present invention illustrating the installation of a tensioning assembly in one embodiment;

FIG. 4 is an enlarged partial view of FIG. 3;

FIG. 5 is a schematic view of a mounting slot of a chain saw according to an embodiment of the present invention;

FIG. 6 is an isometric view of a chain saw of the present invention showing a tensioning assembly in one embodiment;

FIG. 7 is a schematic view of a driving part of a chain saw according to an embodiment of the present invention;

fig. 8 is a side view of a fixing portion and an adjusting portion of a chain saw according to an embodiment of the present invention.

Description of the element reference numerals

1. A housing; 11. a first handle; 12. a second handle; 13. mounting grooves; 131. a first mounting groove; 132. a second mounting groove; 1321. embedding holes; 1322. a first step; 1323. a second step; 14. a power supply socket; 2. a cutter; 21. a saw chain; 22. a guide plate; 3. a control component; 4. a tension assembly; 41. a fixed part; 411. a first fixed part; 412. a second fixed part; 42. an adjustment section; 421. blocking edges; 43. a transmission member; 431. a driving bevel gear; 432. a driven helical gear; 433. a transmission rod; 434. a first connecting shaft; 435. a second connecting shaft; 436. a pin.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the present invention is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.

Please refer to fig. 1 to 8. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope covered by the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

Referring to fig. 1 and 2, the present invention provides a chain saw, which includes a housing 1; a cutter 2 mounted on the housing 1; a power assembly (not shown) accommodated in the housing 1 and used for driving the cutter 2 to perform cutting work; the control assembly 3 is arranged at one end of the shell 1, which is far away from the cutter 2, and is used for controlling the power assembly; the tensioning assembly 4 is fixed on the shell 1 and is in transmission connection with a guide plate 22 in the cutter 2, and particularly, the guide plate 22 is driven to move through adjustment of the tensioning assembly 4, so that the tensioning force of the saw chain 21 circumferentially arranged on the guide plate 22 is adjusted.

Referring to fig. 1 and 2, in the present embodiment, the housing 1 includes two shells with matching structures, and the two shells together enclose a receiving cavity (not shown) for mounting the power assembly and the tension assembly 4 in the chain saw. The housing 1 is substantially shaped like a long box, and an opening is formed in one end in the length direction for mounting the cutter 2, so that the cutter 2 is in transmission connection with the internal power assembly.

Referring to fig. 1 and fig. 2, in the present embodiment, one end of the housing 1 away from the cutting tool 2 is hollow, a first handle 11 is formed on an upper side of the hollow position, a second handle 12 is formed on a lower side of the hollow position, and a length direction of the first handle 11 is substantially parallel to an extending direction of the cutting tool 2; the first handle 11 is formed by surrounding the end parts of the two shells, namely the first handle 11 and the shell 1 are integrally formed, so that on one hand, the stability of connection between the first handle 11 and the shell 1 is enhanced, and a user can conveniently hold the chain saw to perform cutting operation; on the other hand, the production steps and the flow of the shell 1 are simplified, and the purpose of reducing the production cost of the chain saw is achieved.

In addition, a control assembly 3 is installed at the first handle 11, wherein the control assembly includes a control board (not shown) and a switch trigger (not shown), the control board is installed inside the housing 1 and is used for receiving instructions transmitted by the switch trigger and controlling the start and stop of the power assembly; the switch trigger is arranged at the first handle 11 and is electrically connected with the control panel, and one end of the switch trigger penetrates through the shell 1 and is rotationally connected with the inner side wall of the shell 1; the other end extends outside the shell 1, which is convenient for a user to toggle the switch trigger by fingers. In another embodiment of the present invention, the first handle 11 can be disposed in a split manner with the housing 1, and it is only necessary to satisfy the connection stability of the first handle 11 and the housing 1 and to ensure the feasibility of holding the chain saw by the user.

Referring to fig. 1 and 2, in the present embodiment, the cutter 2 includes a saw chain 21 and a guide plate 22 for supporting the saw chain 21. One end of the guide plate 22 is fixed inside the housing 1 by a fastener, and the other part thereof extends forward along the length direction of the housing 1; the saw chain 21 is arranged on the side wall of the guide plate 22 in a surrounding mode, and the saw chain 21 is rotatably connected to the guide plate 22 and can rotate at a high speed under the driving action of the power assembly to perform cutting work.

Referring to fig. 1 and 2, in the present embodiment, the power assembly includes a driving unit for driving the tool and a power supply unit for supplying power to the driving unit. The power supply unit comprises a power supply socket 14 and a battery pack (not shown) detachably connected to the power supply socket 14; further, the power supply socket 14 is arranged between the second handle 12 and the first handle 11, so that the center of gravity of the chain saw is located at the center position of the first handle 11 perpendicular to the shell, and the width of the two sides of the power supply socket 14 is 2 times of the width of the shell 1.

In a preferred embodiment of the present invention, the power supply sockets 14 are symmetrically disposed two and are respectively located on both sides of the housing 1 in the width direction, so that the battery pack is inserted and fixed outside the housing, and thus the battery pack can be conveniently replaced and charged, and the practicability of the chain saw is further improved.

Specifically, the power supply unit further includes an engaging member (not shown) provided on the case 1 for engaging the battery pack, and the power supply socket 14 is provided corresponding to the engaging member so that the battery pack is detachably coupled to the case 1 by the engaging member and is electrically connected to the power supply socket 14. In this embodiment, the engaging member includes a cavity and a guide rail groove disposed in the cavity, the engaging member is symmetrically disposed on two sides of the housing 1, the power supply socket 14 is accommodated in the cavity, and the battery pack is held in the cavity by the guide rail groove, so that the electrical connection between the battery pack and the power supply socket is stable, and the power supply abnormality of the chain saw caused by the falling of the battery pack and the cavity is effectively prevented.

It should be noted that, in the present invention, the combination of the engaging member as the cavity and the guide rail groove is only used as an example for illustration, in other embodiments of the present invention, the engaging member may also be a structure that is disposed on the housing 1 and used for connecting or accommodating the battery pack, such as the clamping groove, the connecting protrusion, etc., and one engaging member may be engaged with and connected to at least one battery pack, that is, the structure of the power supply unit shown in the drawings of the specification is only exemplary and should not be limited thereto.

Referring to fig. 2-5, in the present embodiment, a mounting groove 13 is formed on a housing of the housing 1 near the cutter, the mounting groove 13 is disposed along the length direction of the housing 1, the tension assembly 4 is disposed in the mounting groove 13, and one end of the tension assembly 4 is fixedly connected to the bottom wall of the mounting groove 13 through a pin 436; in addition, it should be noted that an embedding hole 1321 is formed in the side wall of the mounting groove 13 close to the cutter, and the other end of the tensioning assembly 4 extends into the embedding hole 1321, so that the two ends of the tensioning assembly 4 are fixed, and the tensioning assembly 4 is supported by the housing 1.

Referring to fig. 6 and 7, the tension assembly 4 includes a fixing portion 41, an adjusting portion 42, and a transmission member 43:

one end of the fixing part 41 far away from the cutter is fixed with the bottom wall of the mounting groove 13 through a pin 436; and the fixing portion 41 is provided with a plurality of slots for mounting the gears of the transmission member 43 and a plurality of through holes for passing the shaft members of the gears. The fixing portion 41 is fixed to the bottom wall of the mounting groove 13 through the pin 436, and the mounting groove 13 is fixed to the pin 436 in a matching manner, so that the connection stability of the tension assembly 4 on the housing 1 can be increased, and in addition, one end of the transmission rod 433, which is far away from the second fixing portion 412, abuts against the side wall of the mounting groove 13, so that the transmission rod 433 also plays a certain supporting role on the fixing portion 41.

The adjusting portion 42 is slidably connected with the fixing portion 41 through the transmission component 43, the adjusting portion 42 is in an L shape, a second connecting shaft 435 is fixed on a side plate with a longer length in the adjusting portion 42, the second connecting shaft 435 is fixedly connected with the guide plate 22, and the second connecting shaft 435 penetrates through a through hole in the guide plate 22 to achieve connection between the adjusting portion 42 and the guide plate 22, so that the guide plate 22 can reciprocate along with the adjusting portion 42.

One end of the transmission member 43 extends into the embedding hole 1321 to realize the quick installation of the tension assembly 4 and the housing 1.

Referring to fig. 6-8, in the present embodiment, the transmission component 43 includes a driving bevel gear 431, a driven bevel gear 432 and a transmission rod 433. Wherein, the driven bevel gear 432 is rotatably connected in the slot position of the fixing part 41, and the axial line of the driven bevel gear 432 is in the same direction with the length direction of the fixing part 41; the transmission rod 433 is arranged along the length direction of the fixing portion 41, one end of the transmission rod 433 is coaxially fixed with the driven bevel gear 432, the middle section of the transmission rod 433 is rotatably connected with the fixing portion 41 through a bearing, an external thread is formed on the surface of one section of the transmission rod 433, which is close to the cutter 2, and is in threaded penetrating connection with the adjusting portion 42 through the external thread, and the other end of the transmission rod 433 extends into the embedding hole 1321. In addition, it should be noted that the surface of one end of the transmission rod 433, which extends into the insertion hole 1321, is configured as a smooth rod, so that it can rotate in the insertion hole 1321.

Further, as shown in fig. 6-8, in a preferred embodiment of the present invention, the fixing portion 41 includes a first fixing portion 411 and a second fixing portion 412, the first fixing portion 411 is a mounting block and is fixed to the bottom wall of the mounting groove 13 by a pin 436 at an end away from the tool 2. The second fixing portion 412 is a circular ear plate. Preferably, the first fixing portion 411 and the second fixing portion 412 are integrally formed.

Corresponding to the first fixing portion 411 and the second fixing portion 412, the mounting groove 13 includes a first mounting groove 131 and a second mounting groove 132, as shown in fig. 5, the first fixing portion 411 and the driving bevel gear 431 are disposed in the first mounting groove 131, the second fixing portion 412, the adjusting portion 42, the driven bevel gear 432, and the driving rod 433 are disposed in the second mounting groove 132, the second fixing portion 412 is fixedly connected with the bottom wall of the second mounting groove 132 by a pin 436, and an embedding hole 1321 is opened on the side wall of the second mounting groove 132 near the saw chain 21.

Further, referring to fig. 4 and 5, in order to effectively control the moving track of the adjusting part 42 along the transmission rod 433, a first blocking wall 1322 and a second blocking wall 1323 are provided in a stepped shape on the inner side wall of the second mounting groove 132, and the first blocking wall 1322 and the second blocking wall 1323 are perpendicular to each other. In match, the side wall of the adjusting portion 42 extends toward the inner side wall of the second mounting groove 132, so that a rib 421 is formed. The rib 421 abuts against the first rib 1322 on the inner side wall of the second mounting groove 132, so as to limit the moving range of the adjusting part 42 in the length direction of the transmission rod 433; the rib 421 abuts against the second blocking wall 1323 of the inner side wall of the second mounting groove 132, so that the control and adjustment part 42 limits the moving range in the width direction of the transmission lever 433.

In the embodiment, during the installation of the tensioning assembly 4, the transmission rod 433 of the tensioning assembly 4 can be inserted into the embedding hole 1321, and the fixing part 41 of the tensioning assembly 4 is fixed by the pin 436, so that the tensioning assembly 4 is stably installed; the driving bevel gear 432 is rotatably connected to the first fixing portion 411, is located on the upper side of the driven bevel gear 432 and is engaged with the driven bevel gear 432, a first connecting shaft 434 is coaxially fixed on the driving bevel gear 431, the first connecting shaft 434 passes through the side wall of the adjusting portion 42 and extends outside the housing 1, and a knob (not shown) is fixed at one end of the first connecting shaft 434 away from the driving bevel gear 431.

In actual operation, a user can rotate the knob, and the driving bevel gear 431 is rotated by the rotation of the first connecting shaft 434, so as to drive the driven bevel gear 432 to rotate, and further drive the transmission rod 433 to rotate, and the rotation of the transmission rod 433 drives the adjusting portion 42 to move along the length direction of the second installation groove 132. And since the first blocking wall 1322 and the second blocking wall 1323 of the second mounting groove 132 are abutted against the rib 421 of the adjusting part 42 in the length direction and the width direction, the adjusting part 42 is adjusted and moved in accordance with the locus of the second mounting groove 132 in the length direction, and the adjustment range of the adjusting part 42 is limited.

To sum up, the utility model discloses a chain saw is fixed the diapire of fixed part and mounting groove through the pin, and the connection stability on the casing of multiplicable tensioning assembly, in addition, the one end that the fixed part was kept away from to the transfer line stretches into inlaying of mounting groove and establishes the hole, can realize the quick fixed of tensioning assembly, has improved the stability that tensioning assembly and casing are connected. Furthermore, the inner side wall of the mounting groove is provided with a first blocking wall and a second blocking wall which are in a step shape, a blocking edge is formed on the side wall of the adjusting part, and the blocking edge is abutted against the first blocking wall and the second blocking wall at the step position of the inner side wall of the mounting groove, so that the adjusting range of the adjusting part is limited. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention shall be covered by the claims of the present invention.

Claims

1. A chain saw, comprising:

the shell is provided with a mounting groove;

the guide plate is arranged on the shell, and a saw chain is arranged on the guide plate in the circumferential direction; and

the tensioning assembly is arranged in the mounting groove, is connected with the guide plate and can adjust the tightness of the saw chain;

wherein, set up on the mounting groove lateral wall and inlay and establish the hole, tensioning assembly's one end with the diapire fixed connection of mounting groove, the other end stretches into inlay and establish downtheholely and can inlay and establish downthehole rotation.

2. The chain saw as recited in claim 1, wherein: the tensioning assembly comprises a fixing part, an adjusting part and a transmission part; wherein, the first and the second end of the pipe are connected with each other,

the fixing part is fixedly connected with the bottom wall of the mounting groove through a pin, and a plurality of groove positions and through holes matched with the transmission part are formed in the fixing part;

the adjusting part is connected with the fixing part in a sliding manner through the transmission part;

the transmission component is in transmission connection with the adjusting part; one end of the transmission component extends into the embedding hole.

3. The chain saw as recited in claim 2, wherein: the fixing part comprises a first fixing part and a second fixing part vertically and fixedly connected with the first fixing part; the transmission member includes:

the driving bevel gear is rotationally connected to the first fixing part;

the driven helical gear is rotationally connected to the second fixing part, is positioned below the driving helical gear and is meshed with the driving helical gear;

and one end of the transmission rod is coaxially fixed with the driven bevel gear and is in transmission connection with the adjusting part, and the other end of the transmission rod extends into the embedding hole.

4. The chain saw as recited in claim 3, wherein: the mounting groove includes a first mounting groove and a second mounting groove, wherein,

the first fixing part and the driving bevel gear are arranged in the first mounting groove;

the second fixed part, the regulating part driven helical gear with the transfer line sets up in the second mounting groove, the second fixed part through the pin with the diapire fixed connection of second mounting groove, just inlay and establish the hole and set up the second mounting groove is close to on the lateral wall of saw chain.

5. The chain saw as recited in claim 3, wherein: the driving bevel gear is rotatably connected with the first fixing portion through a first connecting shaft, and a knob is arranged at one end, far away from the driving bevel gear, of the first connecting shaft.

6. The chain saw as recited in claim 3, wherein: one end of the transmission rod penetrates through the driven helical gear and is coaxially fixed with the driven helical gear, the other end of the transmission rod extends into the embedding hole, and the diameter of the transmission rod is matched with that of the embedding hole.

7. The chain saw as recited in claim 3, wherein: the middle part of the transmission rod is provided with threads, and the transmission rod is in transmission connection with the adjusting part through the threads.

8. The chain saw as recited in claim 4, wherein: the side wall of the adjusting part extends to the side wall of the second mounting groove to form a flange, and the flange is positioned on one side far away from the driving bevel gear and the embedding hole; and a first blocking wall matched with the blocking edge is arranged on the side wall of the second mounting groove and used for limiting the moving range of the adjusting part along the length direction of the transmission rod.

9. The chain saw as recited in claim 8, wherein: and a second retaining wall matched with the retaining edge is further arranged on the side wall of the second mounting groove and used for limiting the moving range of the adjusting part along the width direction of the transmission rod.

10. The chainsaw of claim 2, wherein: the adjusting part is provided with a second connecting shaft, and the adjusting part is connected with the guide plate through the second connecting shaft.