CN218699679U

CN218699679U - Guide plate capable of automatically adjusting tightness of saw chain and chain saw thereof

Info

Publication number: CN218699679U
Application number: CN202221650417.9U
Authority: CN
Inventors: 倪文彬
Original assignee: Jiangsu Dartek Technology Co Ltd
Current assignee: Jiangsu Dartek Technology Co Ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2023-03-24
Anticipated expiration: 2032-06-28

Abstract

The utility model discloses a but baffle of automatically regulated saw chain elasticity and chain saw thereof, the circumference of this baffle has the installation department that is used for installing the saw chain, and this baffle includes guide plate head, baffle inserted sheet, guide plate body and elastic component. The guide plate inserting piece is arranged on the guide plate head, and the guide plate head is fixedly connected with the guide plate inserting piece. The guide plate body is provided with a guide plate slot matched with the guide plate insertion piece. One of the guide plate slot and the guide plate insertion piece is provided with a sliding groove, and the other one of the guide plate slot and the guide plate insertion piece is provided with a sliding plate, wherein the sliding groove is in sliding fit with the sliding plate. The elastic piece is arranged between the guide plate inserting piece and the guide plate inserting groove, and the guide plate head is elastically connected to the guide plate body through the elastic piece. Through install the elastic component additional between guide plate head and baffle body, the effectual condition that reduces the saw chain and follow the slippage on the baffle has reduced the degree of difficulty of adjusting of saw chain elasticity.

Description

Guide plate capable of automatically adjusting tightness of saw chain and chain saw thereof

Technical Field

The utility model relates to a chain saw technical field especially relates to a but baffle of automatically regulated saw chain elasticity and chain saw thereof.

Background

The chain saw belongs to a garden tool for construction operations such as forest felling, wood sawing, orchard pruning, firewood splitting, small felling and the like, and can realize cutting of various kinds of wood, timber building and wood cutting, forestry harvesting and other cutting operations. After the chain saw is used for a period of time, the gap between the saw chain connecting piece and the rivet can be enlarged, the connecting piece and the rivet can be worn due to long-time work, the saw chain can be lengthened and loosened, serious potential safety hazards can be generated due to untimely adjustment, and therefore a random tool needs to be manually used for adjusting the tensioning degree of the saw chain. The general complex operation of accommodation process takes place the condition of saw chain slippage moreover easily, wastes time and energy, has brought very big inconvenience for the user.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a but baffle of automatically regulated saw chain elasticity, it can effectively alleviate the condition of the easy slippage from the baffle of saw chain when carrying out the elasticity and adjusting.

In order to achieve the above object, the utility model provides a but baffle of automatically regulated saw chain elasticity, the circumference of this baffle has the installation department that is used for installing the saw chain, and this baffle includes guide plate head, baffle inserted sheet, baffle body and elastic component. The guide plate inserting piece is arranged on the guide plate head, and the guide plate head is fixedly connected with the guide plate inserting piece. The guide plate body is provided with a guide plate slot matched with the guide plate insertion piece. One of the guide plate slot and the guide plate insertion piece is provided with a sliding groove, and the other one of the guide plate slot and the guide plate insertion piece is provided with a sliding plate, wherein the sliding groove is in sliding fit with the sliding plate. The elastic piece is arranged between the guide plate inserting piece and the guide plate inserting groove, and the guide plate head is elastically connected to the guide plate body through the elastic piece.

In one or more embodiments, one end of the guide plate insert, which is far away from the guide plate head, is provided with a top block which is abutted against the elastic part.

In one or more embodiments, an abutting portion of the elastic member and the top block is recessed toward a side of the top block.

In one or more embodiments, the mounting portion includes a first chain groove provided on the guide plate head and a second chain groove provided on the guide plate body, and the saw chain is provided in the first chain groove and the second chain groove.

In one or more embodiments, a movable space for the elastic member to deform is formed in the guide plate slot; the two ends of the elastic piece are provided with insertion arms, and the insertion arm parts extend into the sliding grooves.

In one or more embodiments, the length of the sliding plate is smaller than the length of the sliding groove in the sliding direction, and the sliding groove leaves a plugging space for the elastic member to move after the sliding plate is inserted into the sliding groove.

In one or more embodiments, the guide plate body has a guide groove to be installed in a guide manner, the guide groove being formed at an end remote from the guide plate insertion groove.

In one or more embodiments, the guide plate body has a positioning hole for positioning installation, and the positioning hole is formed at an end far away from the guide plate insertion slot.

The utility model also provides a chain saw, this chain saw include the chain saw body and as above the baffle, be equipped with the drive on the chain saw body the sprocket of saw chain, the baffle with it has the saw chain to surround on the sprocket.

In one or more embodiments, be equipped with the screw rod groove on the chain saw body, be equipped with the threaded rod in the screw rod groove, the one end rotation of threaded rod is fixed in the one end of screw rod groove, spiro union cooperation have on the threaded rod with locating hole location complex tensioning pin.

Compared with the prior art, according to the utility model discloses a but baffle of automatically regulated saw chain elasticity is through falling into baffle body and baffle head with the baffle to add the elastic component between the two, make baffle body and baffle head when carrying out the elasticity regulation of saw chain, the overhead saw chain of baffle body and baffle remains certain tension throughout, makes the saw chain can not follow baffle body and the overhead slippage of baffle. The sliding chute and the sliding plate enable the guide plate head and the guide plate body to be smoothly connected in a sliding mode, and installation of the guide plate head and the guide plate body is completed, so that stability of sliding connection of the guide plate head and the guide plate body is kept. The spout cooperates with the grafting of the arm of inserting of elastic component for the elastic component is receiving the extrusion or when releasing, can not follow the overhead landing of baffle, thereby reduces the condition that takes place baffle head and baffle body elastic support and disappear.

Drawings

Fig. 1 is a schematic view of a guide plate capable of automatically adjusting the tightness of a saw chain according to an embodiment of the present invention and a chain saw in a non-contracted state of an elastic member;

FIG. 2 is a schematic view of a guide plate for automatically adjusting the tightness of a saw chain according to an embodiment of the present invention in relation to a chain saw in a state where an elastic member is contracted;

fig. 3 is a schematic diagram illustrating an exploded perspective view of a guide plate capable of automatically adjusting the tightness of a saw chain according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a guide plate capable of automatically adjusting the tightness of a saw chain according to an embodiment of the present invention;

fig. 5 is a schematic perspective view of a guide head and an elastic member of a guide plate capable of automatically adjusting the tightness of a saw chain according to an embodiment of the present invention;

fig. 6 is a schematic perspective view of a chain saw body according to an embodiment of the present invention;

fig. 7 is an enlarged view of a portion a of fig. 6 according to an embodiment of the present invention.

Description of the main reference numerals:

1. a guide plate head; 11. a guide plate inserting sheet; 111. a chute; 112. a top block; 12. a first chain groove; 2. an elastic member; 21. an inserting arm; 3. a guide plate body; 31. a guide plate slot; 311. a slide plate; 312. an activity space; 32. a guide groove; 33. positioning holes; 34. a second chain groove; 4. a chain saw body; 41. a sprocket; 42. a screw channel; 43. a threaded rod; 44. a tensioning pin; 45. a saw chain; 46. and a guide post.

Detailed Description

The following detailed description of the present invention is provided with reference to the accompanying drawings, but it should be understood that the scope of the invention is not limited by the detailed description.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

As shown in fig. 1 to 5, a chain saw according to an embodiment of the present invention is shown, which includes a guide plate and a chain saw body 4. The guide plate comprises a guide plate head 1, an elastic member 2 and a guide plate body 3. The guide plate is divided into two parts by a guide plate head 1 and a guide plate body 3, and an elastic member 2 is connected between the guide plate head 1 and the guide plate body 3. The chain saw body 4 is provided with a sprocket 41, and a saw chain 45 is wound between the sprocket 41 and the guide plate body 3. Under the support of elastic component 2, no matter the baffle head 1 and the baffle body 3 are close to each other or keep away from, elastic component 2 can carry out elastic support to baffle head 1 and baffle body 3 all the time for saw chain 45 carries out the elasticity of adaptability on baffle head 1, baffle body 3 and sprocket 41 and adjusts, keeps tension, can effectively reduce the condition that saw chain 45 slipped from baffle or sprocket 41.

As shown in fig. 5, in one embodiment, one end of the guide head 1 is a guide plate insert 11, and sliding grooves 111 are formed on both sides of the guide plate insert 11. The elastic part 2 is a plate spring, and the elastic part 2 is bent to form an M-shaped structure. The two legs of the elastic element 2 are insertion arms 21, and the insertion arms 21 can form insertion fit with the sliding groove 111 from one end of the sliding groove 111.

Specifically, as shown in fig. 4, an end of the guide plate insert 11 away from the guide plate head 1 is provided with a top block 112 abutting against the elastic member 2, and a portion of the elastic member 2 abutting against the top block 112 is recessed toward one side of the top block 112 to form an arch structure. The provision of the arch structure increases the elastic restoring force of the elastic member 2.

As shown in fig. 1, 2 and 3, one end of the guide plate body 3 is formed with a guide plate insertion slot 31 inward, and the guide plate body 3 is provided with a slide plate 311 slidably engaged with the slide groove 111 extending inward of the guide plate insertion slot 31. Specifically, the guide plate slot 31 is matched and inserted with the guide plate insert 11. When the guide plate slot 31 is in splicing fit with the guide plate insertion piece 11, firstly, the sliding plate 311 is in splicing fit with the sliding groove 111 and is continuously spliced and pushed, the installation and the matching of the guide plate slot 31 and the guide plate insertion piece 11 are completed, and at the moment, the guide plate body 3 and the guide plate head 1 are installed and matched. Specifically, the guide plate head 1 is provided with a first chain groove 12 for installing a saw chain 45, the guide plate body 3 is provided with a second chain groove 34 matched with the first chain groove 12, and the saw chain 45 is arranged in the first chain groove 12 and the second chain groove 34. The guide plate body 3 and the guide plate head 1 are elastically supported by the elastic member 2 between the guide plate body 3 and the guide plate head 1 to maintain the tension of the saw chain 45 on the guide plate body 3 and the guide plate head 1 and prevent the saw chain 45 from being loosely slid off the first chain groove 12 and the second chain groove 34.

Specifically, as shown in fig. 3, the guide slot 31 is provided with a movable space 312 for the elastic member 2 to deform, so that the elastic member 2 can deform adaptively under the squeezing or releasing of the guide body 3 and the guide head 1, so as to cooperate with providing an elastic supporting force for the guide body 3 and the guide head 1.

In one embodiment, the length of the sliding plate 311 is smaller than the length of the sliding slot 111 in the sliding direction, and after the sliding plate 311 is inserted into the sliding slot 111, the sliding slot 111 leaves a space for the insertion arm 21 to move. The inserting arm 21 of the elastic element 2 can be inserted into the sliding groove 111, and the elastic element 2 is limited, so that the elastic element 2 is prevented from slipping from the position of the movable space 312, and the situation of elastic support failure is reduced.

As shown in fig. 1, 2, 3, 4, 6 and 7, the guide bar 46 is provided with a guide groove 32, which is formed in the chainsaw body 4 and in which an end of the plate body 3 remote from the guide bar insertion slot 31 is guided to engage with the guide bar. Under the guiding action of the guide column 46, the guide plate and the chain saw body 4 are convenient to mount and match.

The chain wheel 41 is used for driving a saw chain 45, the chain wheel 41 is driven by a motor (not shown in the figure) on the chain saw body 4, and the saw chain 45 on the guide plate head 1 and the guide plate body 3 is driven to run by the driving of the chain wheel 41.

Specifically, one end of the guide plate body 3, which is far away from the guide plate slot 31, is provided with a positioning hole 33 for positioning and mounting the guide plate body 3. The chain saw body 4 is provided with a screw groove 42, a threaded rod 43 is arranged in the screw groove 42, one end of the threaded rod 43 is rotatably fixed at one end of the screw groove 42, and a tensioning pin 44 which is in positioning fit with the positioning hole 33 is screwed on the threaded rod 43. During installation, the tensioning pin 44 is inserted into the positioning hole 33, and the tensioning pin 44 is moved in the axial direction of the screw groove 42 by screwing the threaded rod 43, so that the guide plate body 3 and the guide plate head 1 are driven to be far away from or close to the chain wheel 41, and the tightness of the saw chain 45 is adjusted. In this process, the elastic member 2 always elastically supports the guide body 3 and the guide head 1, so that when the guide body 3 and the guide head 1 approach the sprocket 41, the saw chain 45 on the guide body 3 and the guide head 1 can maintain a certain tension and cannot slip off from the guide body 3 and the guide head 1.

To sum up, the utility model discloses a fall into baffle body 3 and baffle head 1 at the baffle to add elastic component 2 between the two, make baffle body 3 and baffle head 1 when carrying out the elasticity regulation of saw chain 45, the saw chain 45 on baffle body 3 and the baffle head 1 remains certain tension throughout, makes the saw chain 45 can not follow the slippage on baffle body 3 and the baffle head 1.

The sliding grooves 111 and the sliding plates 311 are arranged to enable the guide plate head 1 and the guide plate body 3 to be smoothly installed in a sliding mode, and stability of sliding connection of the guide plate head 1 and the guide plate body 3 is kept.

The sliding groove 111 is matched with the insertion arm 21 of the elastic element 2 in an insertion manner, so that the elastic element 2 cannot slide off the guide plate head 1 when being extruded or released, and the situation that the elastic support of the guide plate head 1 and the guide plate body 3 disappears is reduced.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. A guide plate for automatically adjusting the tightness of a saw chain, the guide plate having a mounting portion at its periphery for mounting a saw chain (45), the guide plate comprising:

a guide plate head (1);

the guide plate inserting piece (11) is arranged on the guide plate head (1), and the guide plate head (1) is fixedly connected with the guide plate inserting piece (11);

the guide plate body (3) is provided with a guide plate slot (31) matched with the guide plate inserting piece (11);

one of the guide plate slot (31) and the guide plate inserting piece (11) is provided with a sliding groove (111), the other one is provided with a sliding plate (311), and the sliding groove (111) is in sliding fit with the sliding plate (311);

elastic component (2), elastic component (2) set up baffle inserted sheet (11) with between baffle slot (31), deflector head (1) passes through elastic component (2) elastic connection in deflector body (3).

2. The guide plate capable of automatically adjusting the tightness of the saw chain as claimed in claim 1, wherein the end of the guide plate insert (11) far away from the guide plate head (1) is provided with a top block (112) abutting against the elastic member (2).

3. The guide plate capable of automatically adjusting the tightness of a saw chain as set forth in claim 2, wherein the abutting portion of the elastic member (2) with the top block (112) is recessed toward the side of the top block (112).

4. The guide plate capable of automatically adjusting the tightness of a saw chain according to claim 1, wherein the mounting portion comprises a first chain groove (12) formed on the guide plate head (1) and a second chain groove (34) formed on the guide plate body (3), and the saw chain (45) is arranged in the first chain groove (12) and the second chain groove (34).

5. The guide plate capable of automatically adjusting the tightness of a saw chain as claimed in claim 1, wherein a movable space (312) for deforming the elastic member (2) is formed in the guide plate insertion groove (31); two ends of the elastic piece (2) are provided with inserting arms (21), and the inserting arms (21) partially extend into the sliding grooves (111).

6. The guide plate capable of automatically adjusting the tightness of a saw chain according to claim 1, wherein the length of the sliding plate (311) is smaller than the length of the sliding groove (111) in the sliding direction, and the sliding groove (111) has a plugging space for the elastic member (2) to move after the sliding plate (311) is inserted into the sliding groove (111).

7. The guide plate for automatically adjusting the tightness of a saw chain according to claim 1, wherein the guide plate body (3) has a guide groove (32) installed to be guided, the guide groove (32) being formed at an end distant from the guide plate insertion groove (31).

8. The guide plate capable of automatically adjusting the tightness of a saw chain as claimed in claim 1, wherein the guide plate body (3) has a positioning hole (33) for positioning installation, the positioning hole (33) being formed at an end away from the guide plate insertion slot (31).

9. A chain saw, characterized in that the chain saw comprises a chain saw body (4) and a guide plate according to any one of claims 1-7, wherein the chain saw body (4) is provided with a chain wheel (41) for driving the saw chain (45), and the guide plate and the chain wheel (41) are surrounded by the saw chain (45).

10. A chainsaw comprising a chainsaw body (4) and a guide plate according to claim 8, wherein the chainsaw body (4) is provided with a sprocket (41) for driving the saw chain (45), and the guide plate and the sprocket (41) are surrounded by the saw chain (45).

11. The chain saw as recited in claim 10, wherein the chain saw body (4) is provided with a screw groove (42), a threaded rod (43) is arranged in the screw groove (42), one end of the threaded rod (43) is rotatably fixed at one end of the screw groove (42), and the threaded rod (43) is screwed with a tensioning pin (44) which is positioned and matched with the positioning hole (33).