Raft wheel structure

Abstract

The utility model relates to raft wheel field especially raft wheel structure, a raft wheel structure, including main part cover and main body, the main part cover is covered in the main body, is equipped with swing arm drive system on main part cover and main body, swing arm drive system includes big tooth, big tooth and back dial gear set mesh, the tooth cover is covered in back dial gear set tooth body below, the upper portion of tooth cover is equipped with annular clamping groove, the middle hollow of main part cover, the inboard wall body on hollow place is equipped with circular recess, is equipped with clutch axle on circular recess, passes through clutch cam on clutch axle upper portion, the outer wall ring of clutch cam is equipped with upper pressure body and lower pressure body, is equipped with the spigot in the inner wall of clutch cam, is equipped with cam pressing plate below clutch cam, the right side of cam pressing plate is opened circular hole, and the both sides of circular hole are equipped with convex base. The utility model has the advantages of novel structure, ingenious and simple design, back dial gear set can move right and locate, back dial gear set can move left but cannot locate, through back dial gear set rotation, can make it automatic reset.

Description

Technical Field

[0001] This utility model relates to the field of raft wheels, and in particular to a raft wheel structure. Background Technology

[0002] Existing raft wheels usually have a clutch mechanism. The commonly used clutch mechanism uses a snap ring to lock the clutch, which requires manual cranking to disengage and reset the snap ring. This only allows for one-way operation and is inconvenient to use. Summary of the Invention

[0003] To solve the aforementioned technical problem of unidirectional operation, this utility model provides a raft wheel structure.

[0004] The technical solution of this utility model is as follows: A raft structure includes a main cover and a main body. The main cover is fitted onto the main body. A rocker arm transmission system is provided on the main cover and the main body. The rocker arm transmission system includes a large gear that meshes with a return gear set. A gear sleeve is fitted below the teeth of the return gear set. An annular groove is provided on the upper part of the gear sleeve. The main cover is hollow in the middle. A circular groove is provided on the inner wall of the hollow. A clutch shaft is provided on the circular groove. A clutch cam passes through the upper part of the clutch shaft. An upper pressure body and a lower pressure body are provided on the outer wall of the clutch cam. An insertion port is provided on the inner wall of the clutch cam. A cam pressure plate is provided below the clutch cam. A circular hole is opened on the right side of the cam pressure plate. Protrusions are provided on both sides of the circular hole. A retaining ring is provided at the lower part of the clutch shaft. A groove is provided below the retaining ring. A return plate is engaged in the groove. A spring a is provided below the return plate. An opening is provided on the left side of the cam pressure plate. A clutch groove is provided at the opening. The clutch groove engages with the annular groove. The lower end of the clutch shaft passes through the main body and is connected to a knob. Spring b is provided on both sides of the bottom of the cam pressure plate.

[0005] The upper and lower pressure bodies are connected by a slope, and are spaced apart. The upper and lower pressure bodies are positioned in a cross shape, and the height of the upper pressure body is greater than that of the lower pressure body.

[0006] The protrusion has slopes on both sides, and a smooth surface between the slopes.

[0007] The clutch groove is U-shaped.

[0008] The top of the clutch shaft is cylindrical, and the bottom and lower ends of the cylinder are side-cut. The upper part of the clutch shaft is inserted into the socket, and the lower end of the clutch shaft is inserted into the clutch lever hole.

[0009] The clutch shaft and clutch lever are fixed by screws.

[0010] The lower part of the toothed sleeve is provided with protrusions a on both sides, the bottom of the cam pressure plate is provided with two protrusions on each side, the inner wall of the return plate is provided with protrusions on both sides, and the outer wall is provided with a pointed part.

[0011] The technical solution of this utility model has a novel structure and a clever and simple design. The return gear set can move to the right and be positioned, and it can move to the left but cannot be positioned. By rotating the return gear set, it can be automatically returned to its original position. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of part of this utility model; Figure 3 , 4 This is a schematic diagram of the clutch cam of this utility model; Figure 5 , 6 This is a schematic diagram of the structure of the cam pressure plate of this utility model; Figure 7 This is a schematic diagram of the clutch shaft of this utility model; Figure 8 This is a schematic diagram of the structure of the return gear assembly of this utility model; Figure 9 This is a schematic diagram of the structure of the return gear assembly of this utility model; Figure 10 This is a schematic diagram of the structure of the return lever of this utility model. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0014] like Figure 1 , 2 A raft structure shown in figures 3, 4, 5, 6, 7, 8, 9, and 10 includes a main cover 9 and a main body 10. The main cover 9 is fitted onto the main body 10. A rocker arm transmission system is provided on the main cover 9 and the main body 10. The rocker arm transmission system includes a large gear that meshes with a return gear set 11. A gear sleeve 8 is fitted below the teeth of the return gear set 11. An annular groove 12 is provided on the upper part of the gear sleeve 8. The main cover 9 is hollow in the middle, and a circular groove is provided on the inner wall of the hollow. A clutch shaft 5 is provided on the circular groove, and a clutch cam 1 passes through the upper part of the clutch shaft 5. The outer wall of the clutch cam 1 is provided with an upper pressure body 16 and a lower pressure body 15. The inner wall of the clutch cam 1 is provided with an insertion port. The lower part of the clutch cam 1 is provided with a cam pressure plate 2. The right side of the cam pressure plate 2 has a round hole. The two sides of the round hole are provided with a protrusion 17. The lower part of the clutch shaft 5 is provided with a retaining ring. The retaining ring is provided with a groove. The groove is used to hold a return plate. The return plate is provided with a spring a3. The left side of the cam pressure plate 2 is provided with an opening. The opening is provided with a clutch groove. The clutch groove is used to engage with an annular groove 12. The lower end of the clutch shaft 5 passes through the main body 10 and is connected to the knob 6. The bottom sides of the cam pressure plate 2 are provided with springs b.

[0015] The upper pressure body 16 and the lower pressure body 15 are connected by a slope, and the upper pressure body 16 and the lower pressure body 15 are arranged at intervals. The upper pressure body 16 and the lower pressure body 15 are positioned in a cross shape, and the height of the upper pressure body 16 is greater than the height of the lower pressure body 15.

[0016] The protrusion 17 has slopes on both sides, and a smooth surface between the slopes.

[0017] The clutch groove is U-shaped.

[0018] The top of the clutch shaft 5 is cylindrical, and the bottom and lower ends of the cylinder are side-cut. The upper part of the clutch shaft 5 is inserted into the socket, and the lower end of the clutch shaft 5 is inserted into the rotating hole of the clutch knob 6.

[0019] The clutch shaft 5 and clutch lever 6 are fixed by screws.

[0020] The lower part of the toothed sleeve 8 has protrusions a on both sides, the bottom of the cam pressure plate 2 has two cylinders on each side, the inner wall of the return plate 4 has protrusions on both sides, and the outer wall has a pointed part.

[0021] In use, the clutch shaft 5 is wear-resistant and durable. When the lever 6 is pressed to the right (outward), it rotates, driving the clutch shaft 5. The clutch shaft 5 then drives the clutch cam 1 and the return gear 4 to rotate. The cam pressure plate 2 does not rotate. The clutch cam 1 and the cam pressure plate 2 have a beveled groove fit. When the clutch cam 1 rotates, it pushes the cam pressure plate 2 to the right. The cam pressure plate 2 drives the return gear set 11 to move to the right as well. The lever 6 continues to rotate until the clutch cam 1's lower pressure body 15 and the cam pressure plate 2's protrusion 17 abut against each other, creating a distance and height difference between the clutch cam 1 and the cam pressure plate 2. The gear sleeve 8 experiences a downward clutch force, and the return gear set 11 is positioned at the far right. If the lever 6 is pressed to the left (inward), it also drives the clutch shaft 5 to rotate in the opposite direction, causing the clutch cam 1, etc., to rotate. Because the left and right slopes of the clutch cam 1 are designed differently, and the same rotation angle of the lever makes it impossible for the plane of the clutch cam 1 and the plane of the cam pressure plate to abut against each other, the return gear set cannot be positioned. When the clutch cam 1 and the cam pressure plate 2 are in close contact, the cylinder of the cam pressure plate is used to hold the spring b, which provides a leftward elastic force to the cam pressure plate. When the return gear set 11 is positioned at the leftmost position, the return part of the return gear set 11 and the return plate can interact with each other. The interaction between the protrusion a and the tip, when the return gear set 11 rotates, will act on the return plate, causing the return plate 4 to drive the clutch shaft 5 to rotate, thereby causing the plane of the clutch cam 1 and the plane of the cam pressure plate 2 to disengage from each other. The cam pressure plate 2 will move to the left, driving the return gear set 11 back to its original position, and the lever 6 will also return to its original position.

[0022] It should be understood that the above description is only a preferred embodiment of the present utility model and is not sufficient to limit the technical solution of the present utility model. For those skilled in the art, within the spirit and principles of the present utility model, additions, subtractions, substitutions, transformations or improvements can be made based on the above description, and all such additions, subtractions, substitutions or improvements should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A raft structure, comprising a main body cover (9) and a main body (10), characterized in that: The main cover (9) is fitted onto the main body (10). The main cover (9) and the main body (10) are provided with a rocker arm transmission system. The rocker arm transmission system includes a large tooth, which meshes with a return gear set (11). A tooth sleeve (8) is fitted below the tooth body of the return gear set (11). An annular groove (12) is provided on the upper part of the tooth sleeve (8). The main cover (9) is hollow in the middle. A circular groove is provided on the inner wall of the hollow. A clutch shaft (5) is provided on the circular groove. The upper part of the clutch shaft (5) passes through the clutch cam (1). An upper pressure body (16) and a lower pressure body are provided on the outer wall of the clutch cam (1). (15) The inner wall of the clutch cam (1) is provided with an insertion port. The clutch cam (1) is provided with a cam pressure plate (2) below it. The right side of the cam pressure plate (2) has a round hole. The two sides of the round hole are provided with a boss (17). The lower part of the clutch shaft (5) is provided with a retaining ring. The retaining ring is provided with a slot. The slot is provided with a return plate. The return plate is provided with a spring a (3) below it. The left side of the cam pressure plate (2) has an opening. The opening is provided with a clutch groove. The clutch groove is inserted into the annular slot (12). The lower end of the clutch shaft (5) passes through the main body (10) and connects with the knob (6). The bottom sides of the cam pressure plate (2) are provided with spring b.

2. The raft structure according to claim 1, characterized in that: The upper pressure body (16) and the lower pressure body (15) are connected by a slope. The upper pressure body (16) and the lower pressure body (15) are spaced apart. The upper pressure body (16) and the lower pressure body (15) are positioned in a cross shape. The height of the upper pressure body (16) is greater than the height of the lower pressure body (15).

3. The raft structure according to claim 1, characterized in that: The protrusion (17) has slopes on both sides, and a smooth surface between the slopes.

4. The raft structure according to claim 1, characterized in that: The clutch groove is U-shaped.

5. The raft structure according to claim 1, characterized in that: The top of the clutch shaft (5) is cylindrical, and the bottom and lower ends of the cylinder are side-cut. The upper part of the clutch shaft (5) is inserted into the socket, and the lower end of the clutch shaft (5) is inserted into the turning hole of the clutch lever (6).

6. The raft structure according to claim 1, characterized in that: The clutch shaft (5) and clutch lever (6) are fixed by screws.

7. The raft structure according to claim 1, characterized in that: The lower sides of the toothed sleeve (8) are provided with protrusions a, the bottom sides of the cam pressure plate (2) are provided with two protrusions, the inner walls of the return plate (4) are provided with protrusions, and the outer walls are provided with sharp parts.

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