Gasoline saw lock nut structure

Abstract

A gasoline saw lock nut structure is used for connecting a large cover and a small cover, an air inlet pipeline, a lock nut seat, a paper filter element and a paper filter pressing plate are sequentially arranged between the large cover and the small cover from bottom to top, and a lock nut is further arranged on the small cover. The lock nut seat is provided with a bottom plate, the bottom plate and the side wall form an upward opening, two baffles are correspondingly arranged on the peripheral side of the top of the lock nut seat, the lock nut comprises a rotating head at the top and a locking column at the bottom, a clamping block is arranged at the bottom of the locking column, and openings allowing the locking column to penetrate through are formed in the small cover and the paper filter pressing plate. The locking column sequentially penetrates through the small cover and the paper filter pressing plate and then extends into the opening, after the lock nut is rotated, the baffle is matched with the clamping block, the lock nut is limited to be disengaged, the small cover is fixed to the large cover, rotation is directly conducted through the lock nut, disassembly and assembly can be achieved, the small cover can be rapidly opened, and accessories are replaced, operation is easy and rapid, and efficiency is high. And the gas circuit of the gasoline saw can be conveniently repaired and maintained in time.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to a gasoline saw lock nut structure. Background Art

[0002] A gasoline saw is a portable chain saw driven by an internal combustion engine, and is generally used for felling trees, wood processing and pruning, etc., and is widely used. Generally, the gasoline saw comprises a core of the gasoline saw, and the core comprises necessary components such as an oil circuit, an air circuit, an electric circuit and a carburetor.

[0003] Conventional gasoline saws are equipped with a large cover at the gas path position. The large cover is provided with a channel adapted to the air intake elbow. The air intake elbow is provided with a filter element and other structures. Then the small cover is fixed to the large cover through a threaded connection. Due to the threaded connection, the nut assembly takes a long time, and the subsequent maintenance takes a long time and is inconvenient. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a gasoline saw lock nut structure which is easy to assemble and simple to operate.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model provides the following technical solutions: a gasoline saw lock nut structure, used to connect a large cover and a small cover, characterized in that an air intake pipe, a lock nut seat, a paper filter element and a paper filter pressure plate are arranged between the large cover and the small cover from bottom to top, and a lock nut is also arranged on the small cover;

[0008] The lock nut seat is provided with a bottom plate, and the bottom plate and the side wall form an upward opening. Two baffles are correspondingly arranged on the circumferential side of the top of the lock nut seat. The bolts pass through the bottom plate of the lock nut seat and the air intake duct in sequence and fix the lock nut seat and the air intake duct to the large cover. The lock nut includes a rotating head at the top and a locking column at the bottom. A card block is provided at the bottom of the locking column. The small cover and the paper filter pressure plate are provided with openings for the locking column to pass through. The locking column passes through the small cover and the paper filter pressure plate in sequence and extends into the opening. After the lock nut is rotated, the baffle and the card block adapt to and limit the lock nut from coming out, and the small cover is fixed to the large cover.

[0009] In order to ensure stable fixation, the utility model is improved in that a partition is provided on the locking column of the lock nut, and when the lock nut is fixed, the position of the partition just presses the paper filter pressure plate.

[0010] While ensuring strength, the stability of operation is achieved. The utility model is improved in that the cross section of the column body of the locking column is cross-shaped.

[0011] In order to facilitate assembly and ensure the stability of fixing the paper filter element, the utility model is improved in that a step adapted to the inner wall of the paper filter element is arranged on the top surface of the air intake pipe.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a gasoline saw lock nut structure, which has the following beneficial effects:

[0014] The new type of gasoline saw lock nut structure can be disassembled and installed by rotating the lock nut 90 degrees directly. The small cover can be quickly opened and accessories can be replaced. The operation is simple and fast, which is convenient for timely and convenient repair and maintenance of the gas circuit of the gasoline saw. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the structural explosion diagram of the utility model;

[0016] Figure 2 It is a structural diagram of the utility model;

[0017] Figure 3 This is a structural diagram of the lock nut of the utility model;

[0018] Figure 4 It is a structural diagram of the air intake duct of the utility model;

[0019] Figure 5 It is a structural diagram of the lock nut seat of the utility model.

[0020] In the figure: 1. large cover; 2. small cover; 3. air intake duct; 4. lock nut seat; 5. paper filter element; 6. paper filter pressure plate; 7. lock nut; 8. bottom plate; 9. opening; 10. baffle; 11. locking column; 12. block; 13. partition; 14. step. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 A gasoline saw lock nut structure, used to connect a large cover 1 and a small cover 2, characterized in that an air intake pipe 3, a lock nut seat 4, a paper filter element 5 and a paper filter pressure plate 6 are arranged between the large cover 1 and the small cover 2 from bottom to top, and a lock nut 7 is also arranged on the small cover 2;

[0023] The lock nut seat 4 is provided with a bottom plate 8, and the bottom plate 8 and the side wall form an upward opening 9. Two baffles 10 are correspondingly arranged on the circumferential side of the top of the lock nut seat 4. The bolts pass through the bottom plate 8 of the lock nut seat 4 and the air intake duct 3 in sequence and fix the lock nut seat 4 and the air intake duct 3 to the large cover 1. The lock nut 7 includes a rotating head at the top and a locking column 11 at the bottom. A block 12 is provided at the bottom of the locking column 11. An opening 9 for the locking column 11 to pass through is provided on the small cover 2 and the paper filter pressure plate 6. The locking column 11 passes through the small cover 2 and the paper filter pressure plate 6 in sequence and extends into the opening 9. After the lock nut 7 is rotated, the baffle 10 and the block 12 adapt to and limit the lock nut 7 from coming out, thereby fixing the small cover 2 on the large cover 1.

[0024] During installation, the large cover 1 is provided with a space adapted to the air intake channel, so the air intake pipe 3 and the lock nut seat 4 are firmly fixed to the large cover 1 by bolts, and then the paper filter element 5 is placed in the fixed position of the air intake elbow. Under normal circumstances, the paper filter element 5 is arranged in a square or circular ring, and then the paper filter pressure plate 6 is pressed from above to prevent it from loosening. Finally, the small cover 2 is covered on the large cover 1, and a space for placing these parts is formed between the small cover 2 and the large cover 1. When the small cover 2 is placed, the lock nut 7 is inserted from the insertion port of the small cover 2 and through the paper filter pressure plate, and extended into the opening 9. Then, by rotating the lock nut 7, the small cover 2 can be firmly fixed.

[0025] When maintenance is needed, normally when the paper filter element 5 and other parts need to be replaced, just rotate the lock nut 7, normally it is rotated 90 degrees, and then the small cover 2 can be easily opened to replace the accessories inside. It is simple to use and easy to operate.

[0026] The paper filter pressure plate 6 may become loose. In this embodiment, a partition 13 is provided on the locking column 11 of the lock nut 7. When the lock nut 7 is fixed, the position of the partition 13 just presses the paper filter pressure plate 6, ensuring the overall stability.

[0027] Since the lock nut 7 needs to be frequently operated, in this embodiment, the cross section of the column body of the locking column 11 is cross-shaped, which ensures the strength while reducing the weight of the entire lock nut 7.

[0028] A step 14 adapted to the inner wall of the paper filter element 5 is provided on the top surface of the air intake duct 3, so that the paper filter element 5 can be well engaged on the step 14, thereby ensuring stability.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gasoline saw lock nut structure, used to connect a large cover (1) and a small cover (2), characterized in that: An air intake duct (3), a lock nut seat (4), a paper filter element (5) and a paper filter pressure plate (6) are arranged in sequence from bottom to top between the large cover (1) and the small cover (2), and a lock nut (7) is also arranged on the small cover (2); The lock nut seat (4) is provided with a bottom plate (8), and the bottom plate (8) and the side wall form an upward opening (9). Two baffles (10) are correspondingly arranged on the circumferential side of the top of the lock nut seat (4). Bolts pass through the bottom plate (8) and the air intake pipe (3) of the lock nut seat (4) in sequence and fix the lock nut seat (4) and the air intake pipe (3) on the large cover (1). The lock nut (7) comprises a rotating head at the top and a locking column (11) at the bottom. A block (12) is arranged at the bottom of the locking column (11). An opening (9) for the locking column (11) to pass through is arranged on the small cover (2) and the paper filter pressure plate (6). The locking column (11) passes through the small cover (2) and the paper filter pressure plate (6) in sequence and extends into the opening (9). After the lock nut (7) is rotated, the baffle (10) and the block (12) are adapted to restrict the lock nut (7) from coming out, and the small cover (2) is fixed to the large cover (1).

2. A gasoline saw lock nut structure according to claim 1, characterized in that: A partition plate (13) is arranged on the locking column (11) of the lock nut (7). When the lock nut (7) is fixed, the position of the partition plate (13) just presses the paper filter pressure plate (6).

3. A gasoline saw lock nut structure according to claim 1, characterized in that: The cross section of the locking column (11) is a cross.

4. A gasoline saw lock nut structure according to claim 1, characterized in that: A step (14) adapted to the inner wall of the paper filter element (5) is provided on the top surface of the air intake pipe (3).

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