Cutting protection cover for chain saw

Abstract

The cutting protective cover for the chain saw comprises a chain saw head, two protective covers which are symmetrical up and down are movably installed on the outer side of one end of the chain saw head, a butt joint groove is formed in one end of each protective cover, and the protective covers are connected to the outer side of the end of the chain saw head in a clamped mode through the butt joint grooves. The two sides of the chain saw head are each provided with two vertically-symmetrical guide grooves, two symmetrically-distributed connecting pins are fixed to the inner side of the butt joint groove, the connecting pins are slidably clamped in the guide grooves, a storage groove is formed in one end of each guide groove, and a reset spring is arranged on the inner side of each storage groove. An arc-shaped guide strip is slidably mounted on the inner side of the guide groove, one end of the arc-shaped guide strip is slidably inserted into the storage groove, and the end of the arc-shaped guide strip is fixed to the reset spring. The cutting saw chain installed at the end of the chain saw head is surrounded and protected through the two protective covers, the limbs of a worker are prevented from making contact with the cutting saw chain, and the safety of the worker is guaranteed when the worker uses the chain saw.

Description

Technical Field

[0001] The utility model relates to the technical field of chainsaws, in particular to a cutting protection cover for a chainsaw. Background Technique

[0002] A chainsaw, also known as a chain saw, is a portable cutting saw powered by a gasoline engine, mainly used for logging and lumbering. Its working principle is that the staggered L-shaped blades on the saw chain move horizontally to perform a shearing action. Chain saws are generally divided into motorized chain saws, non-motorized chain saws, etc.

[0003] Chain saws are divided into gasoline saws, electric saws, pneumatic saws, and hydraulic saws according to different power sources. The advantages and disadvantages of these four types of power chain saws are obvious. Gasoline saws are highly maneuverable and suitable for field mobile work, but they are noisy, troublesome to maintain and generate a lot of heat. Electric chain saws have stable power, fast start-up, and are heavier than other saws. However, if the line is too long, it will be inconvenient to move. Pneumatic chain saws are safe, pollution-free, have low noise, and are light in weight, but they must be equipped with an air compressor, which increases the floor area and is restricted by conditions. Hydraulic chain saws have sufficient power, but slow start-up, smooth operation, and the hydraulic pump station is smaller in volume than the air compressor and has a higher cost.

[0004] However, the saw chain used in the existing chainsaw is exposed. If the saw chain contacts the staff during the use of the chainsaw, it is extremely easy to cause injury to the staff, posing a great potential safety hazard. Therefore, it does not meet the existing requirements, and for this reason, we propose a cutting protection cover for a chainsaw. Content of the Utility Model

[0005] The purpose of the utility model is to provide a cutting protection cover for a chainsaw to solve the problems in the above background technique that the saw chain used in the chainsaw is exposed, and if the saw chain contacts the staff during the use of the chainsaw, it is extremely easy to cause injury to the staff, posing a great potential safety hazard, etc.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A cutting protection cover for a chainsaw, including a chainsaw head, two upper and lower symmetrically arranged protective covers are movably installed on the outer side of one end of the chainsaw head, one end of the protective cover is provided with a docking groove and is clamped on the outer side of the end of the chainsaw head through the docking groove, two upper and lower symmetrically arranged guiding grooves are provided on both sides of the chainsaw head, two symmetrically distributed connecting pins are fixed on the inner side of the docking groove, the connecting pins are slidably clamped in the guiding grooves, a receiving groove is provided at one end of the guiding groove, a return spring is provided inside the receiving groove, an arc-shaped guiding strip is slidably installed inside the guiding groove, one end of the arc-shaped guiding strip is slidably inserted into the receiving groove and the end is fixed to the return spring.

[0007] Preferably, the protective cover is made of transparent acrylic plate as raw material and is formed by injection molding. The distance between the inner wall of the protective cover and the saw chain of the chainsaw is 2-3 cm.

[0008] Preferably, a guiding block is fixed at the other end of the protective cover, and the surfaces of the two guiding blocks facing each other are both inclined planes.

[0009] Preferably, a guiding plate is detachably installed on the outer side of the end of the guiding block. The guiding plate includes a connecting plate and a clamping plate. The clamping plate is bent in an L shape and one end is fixed to the connecting plate. The connecting plate is inclined and has the same inclination angle as the inclined plane of the guiding block. A clamping groove is provided between the connecting plate and the clamping plate.

[0010] Preferably, a guiding inclined plate is fixed at one end of the connecting plate, and the inclination angle of the guiding inclined plate is greater than that of the connecting plate.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. After the chainsaw finishes cutting an object and separates from the object, the return spring elastically restores and drives the arc-shaped guiding strip to slide and reset inside the guiding groove. At this time, the arc-shaped guiding strip pushes the connecting pin to reset, causing the two protective covers to approach each other. The two protective covers are used to surround and protect the cutting saw chain installed at the end of the chainsaw head, preventing the staff's limbs from contacting the cutting saw chain and ensuring the safety of the staff when using the chainsaw. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0014] Figure 2 is a schematic structural diagram of the guiding plate of the present utility model;

[0015] Figure 3 is a schematic structural diagram of the protective cover of the present utility model;

[0016] Figure 4 is a side structural sectional view of the chainsaw head of the present utility model;

[0017] Figure 5 is Figure 4 the enlarged structure at A in

[0018] In the figure: 1. Chainsaw head; 2. Guiding groove; 3. Protective cover; 4. Guiding block; 5. Guiding plate; 51. Connecting plate; 52. Clamping plate; 53. Clamping groove; 54. Guiding inclined plate; 6. Docking groove; 7. Connecting pin; 8. Arc-shaped guiding strip; 9. Return spring; 10. Storage groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0020] As Figure 1 , Figure 3 , Figure 4 and Figure 5 shown, a cutting protection cover for a chainsaw, two upper and lower symmetrically arranged protective covers 3 are movably installed on the outer side of one end of the chainsaw head 1, one end of the protective cover 3 is provided with a docking groove 6 and is clamped on the outer side of the end of the chainsaw head 1 through the docking groove 6. Two upper and lower symmetrically arranged guide grooves 2 are provided on both sides of the chainsaw head 1. Two symmetrically distributed connecting pins 7 are fixed inside the docking groove 6, and the connecting pins 7 are slidably clamped in the guide grooves 2. A receiving groove 10 is provided at one end of the guide groove 2, a return spring 9 is provided inside the receiving groove 10, and an arc-shaped guide bar 8 is slidably installed inside the guide groove 2. One end of the arc-shaped guide bar 8 is slidably inserted into the receiving groove 10 and the end is fixed to the return spring 9. The cutting saw chain installed at the end of the chainsaw head 1 is surrounded and protected by the two protective covers 3 to prevent the staff's limbs from contacting the cutting saw chain and ensure the safety of the staff when using the chainsaw.

[0021] The protective cover 3 is made of transparent acrylic plate as the raw material and is formed by injection molding. The distance between the inner wall of the protective cover 3 and the chainsaw chain is 2-3 cm, which is convenient for the staff to observe the operation of the saw chain and avoid damage caused by the contact between the protective cover 3 and the running saw chain.

[0022] As Figure 1 and Figure 2 shown, a guiding block 4 is fixed at the other end of the protective cover 3. The surfaces of the two guiding blocks 4 facing each other are both inclined planes. When the inclined plane of the guiding block 4 contacts an object, the guiding block 4 will drive the protective cover 3 to rotate outward relative to the chainsaw head 1 to open the two protective covers 3, so that the chainsaw can smoothly cut the object.

[0023] A guiding plate 5 is detachably installed on the outer side of the end of the guiding block 4. The guiding plate 5 includes a connecting plate 51 and a clamping plate 52. The clamping plate 52 is bent in an L shape and one end is fixed to the connecting plate 51. The connecting plate 51 is inclined and has the same inclination angle as the inclined plane of the guiding block 4. A clamping groove 53 is provided between the connecting plate 51 and the clamping plate 52. A guiding inclined plate 54 is fixed at one end of the connecting plate 51. The inclination angle of the guiding inclined plate 54 is greater than that of the connecting plate 51. The fixedly connected connecting plate 51 and clamping plate 52 are clamped on the outer side of the end of the guiding block 4, and the guiding inclined plate 54 is used to extend the length of the guiding block 4, so that when the chainsaw cuts a large-diameter object, the protective cover 3 can be smoothly opened.

[0024] Working principle: The operator holds the chainsaw and starts it. After the chainsaw starts, the operator holds the chainsaw and brings the saw head 1 of the chainsaw close to the object to be cut. At this time, the guiding inclined plate 54 will first come into contact with the object to be cut. Since the guiding inclined plate 54 is inclined, after the guiding inclined plate 54 contacts the object, it drives the connecting plate 51, the clamping plate 52, and the guiding block 4 to move above or below the saw head 1 of the chainsaw, so that the protective cover 3 drives the connecting pin 7 to slide inside the guiding groove 2. When the connecting pin 7 slides inside the guiding groove 2, it pushes the arc-shaped guiding strip 8 into the inside of the receiving groove 10 and compresses the return spring 9. At this time, the two protective covers 3 move away from each other and expose the saw chain installed at the end of the saw head 1 of the chainsaw. After the chainsaw finishes cutting the object and separates from the object, the return spring 9 elastically restores and drives the arc-shaped guiding strip 8 to slide and reset inside the guiding groove 2. At this time, the arc-shaped guiding strip 8 pushes the connecting pin 7 to reset, causing the two protective covers 3 to move closer to each other, using the two protective covers 3 to surround and protect the cutting saw chain installed at the end of the saw head 1 of the chainsaw, avoiding the contact between the operator's limbs and the cutting saw chain, and ensuring the safety of the operator when using the chainsaw.

[0025] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A cutting protection cover for a chainsaw, comprising a chainsaw head (1), characterized in that: On the outer side of one end of the chainsaw head (1), two upper and lower symmetric protective covers (3) are movably installed. One end of the protective cover (3) is provided with a docking groove (6) and is clamped to the outer side of the end of the chainsaw head (1) through the docking groove (6). On both sides of the chainsaw head (1), two upper and lower symmetric guiding grooves (2) are provided. Inside the docking groove (6), two symmetrically distributed connecting pins (7) are fixed. The connecting pins (7) are slidably clamped in the guiding grooves (2). One end of the guiding groove (2) is provided with a receiving groove (10). Inside the receiving groove (10), a return spring (9) is provided. Inside the guiding groove (2), an arc-shaped guiding strip (8) is slidably installed. One end of the arc-shaped guiding strip (8) is slidably inserted into the receiving groove (10) and its end is fixed to the return spring (9).

2. The cutting protection cover for a chainsaw according to claim 1, wherein: The protective cover (3) is made of transparent acrylic plate as the raw material and is formed by injection molding. The distance between the inner wall of the protective cover (3) and the chainsaw chain is 2 - 3 cm.

3. A cutting protection cover for a chainsaw according to claim 1, characterized in that: At the other end of the protective cover (3), a guiding block (4) is fixed. The surfaces of the two guiding blocks (4) facing each other are both inclined planes.

4. The cutting protection cover for a chainsaw according to claim 3, characterized in that: On the outer side of the end of the guiding block (4), a guiding plate (5) is detachably installed. The guiding plate (5) includes a connecting plate (51) and a clamping plate (52). The clamping plate (52) is bent in an L shape and one end is fixed to the connecting plate (51). The connecting plate (51) is inclined and has the same inclination angle as the inclined plane of the guiding block (4). A clamping groove (53) is provided between the connecting plate (51) and the clamping plate (52).

5. The cutting protection cover for a chainsaw according to claim 4, wherein: One end of the connecting plate (51) is fixed with a guiding inclined plate (54). The inclination angle of the guiding inclined plate (54) is greater than the inclination angle of the connecting plate (51).

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