Roller parts for high pressure cleaning machines

Abstract

The present invention discloses a roller component of a high-pressure cleaning machine, including a roller shaft and a roller, wherein the roller shaft is fixedly connected to the outer shell of a water pump carrier, and the roller and the roller shaft are assembled to achieve rolling connection. Compared with the prior art, the present invention has the following technical effects: the roller and the roller shaft are designed separately, which is convenient for packing and transportation, and saves material volume; the force bearing position of the roller is on its plumb plane, and does not bear additional torque, which is conducive to improving the bearing capacity and service life of the roller; the roller is matched with the annular groove of the roller shaft through a hook, which can be assembled once and never separated, and has good stability.

Description

Technical Field

[0001] The invention relates to cleaning equipment, in particular to a mobile cleaning machine. Background Art

[0002] A high-pressure cleaning machine includes a handheld spray gun and a water pump. The water pump is arranged in a water pump carrier, and the water pump carrier is movable. The handheld spray gun is connected to the water pump through a water pipe, and the water pump is connected to a water source through a water pipe. A roller is provided on the water pump carrier to facilitate the user to move the water pump carrier. According to the prior art, the roller and the roller shaft are an integrated structure in a T shape. During assembly, the integrated T-shaped roller part is clamped on the housing of the water pump carrier. Due to the shape of the T-shaped roller part, it is inconvenient to pack and transport the bulk high-pressure cleaning machine. Summary of the invention

[0003] The technical problem solved by the present invention is that the T-shaped roller parts on the water pump carrier of the bulk high-pressure cleaning machine are inconvenient to pack and transport.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: the roller component of the high-pressure cleaning machine includes a roller shaft and a roller, the roller shaft is fixedly connected to the outer shell of the water pump carrier, and the roller and the roller shaft are assembled to achieve rolling connection.

[0005] When the machine is packed and transported, the roller shaft is on the shell and the roller is separated from the roller shaft. The roller is disc-shaped, which is convenient for packing and transportation.

[0006] The maximum axial distance between the fixed end face of the roller shaft and the protruding structure of the shell is greater than the length of the roller shaft, or equal to the length of the roller shaft. Thus, compared with the protruding structure on the shell, the roller shaft does not protrude outward on the shell, which is not only convenient for packing, but also saves material volume during transportation.

[0007] Alternatively, the length of the roller shaft can be greater than the maximum axial distance between the fixed end face of the roller shaft and the protruding structure of the shell, that is, the roller shaft protrudes from the protruding structure on the shell, but not very much, so as to facilitate the packaging of the shell and save material volume.

[0008] The roller shaft is formed with an annular groove, and the shaft hole of the roller is provided with a convex structure that matches the annular groove. The shaft hole matches the roller shaft, the convex structure matches in the annular groove, and the convex structure can rotate in the annular groove to achieve rolling cooperation between the roller and the roller shaft.

[0009] The roller shaft includes a shaft base and a shaft protrusion, the shaft base is fixedly connected to the housing, the shaft protrusion is installed on the shaft base, an annular groove is formed between the shaft protrusion and the shaft base, and a convex structure matching the annular groove is provided in the shaft hole of the roller. As an option, the shaft base and the housing are integrally formed, and the shaft protrusion is installed on the free end of the shaft base using a connecting piece.

[0010] The annular groove is arranged at the free end of the roller shaft, and the convex structure is located at one end of the roller shaft hole. When the roller shaft is matched with the roller shaft hole, the free end of the roller shaft is inserted into the bottom of the roller shaft hole and matched with the convex structure, so that the roller shaft hole can evenly bear the pressure from the roller shaft, and the roller shaft hole then transmits the pressure to the disc-shaped roller, which is beneficial to improving the bearing capacity and service life of the disc-shaped roller.

[0011] As an option, the convex structure is a hook integrally formed on the roller shaft hole, the free end of the roller shaft is chamfered, the hook is inclined on one side facing the free end of the roller shaft, and the side facing away from the free end of the roller shaft is a straight surface, so that during assembly, the chamfer contacts the inclined surface, and the hook can smoothly pass over the free end of the roller shaft and cooperate with the annular groove. The straight surface of the hook abuts against the side wall of the annular groove, and the roller will not separate from the roller shaft.

[0012] The technical effects of the present invention include: first, compared with the T-shaped roller parts in the prior art, the roller and the roller shaft of the present invention are designed separately, which is convenient for packaging and transportation and saves material volume; second, the force-bearing position of the roller is on its vertical plane and does not bear additional torque, which is beneficial to improving the bearing capacity and service life of the roller; third, the roller cooperates with the annular groove of the roller shaft through a hook, is assembled once, will never come apart, and has good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of a roller 20 assembled on one side of a water pump carrier housing 30 of a high-pressure cleaning machine;

[0015] Figure 2 for Figure 1 A partial exploded view of

[0016] Figure 3 for Figure 2 Re-explosion diagram;

[0017] Figure 4 is an exploded view of the roller 20 and the roller shaft 10;

[0018] Figure 5 is a schematic diagram of the roller 20;

[0019] Figure 6 is a cross-sectional view of the roller 20.

[0020] Explanation of symbols in the figure:

[0021] 10. roller shaft; 11. annular groove; 12. shaft base; 13. shaft protrusion;

[0022] 20. roller; 21. shaft hole of roller; 22. hook;

[0023] 30. outer shell; 31. protruding structure of the outer shell. DETAILED DESCRIPTION

[0024] Combination Figure 1 , Figure 2 The roller member of the high-pressure cleaning machine includes a roller shaft 10 and a roller 20. The roller shaft is fixedly connected to a housing 30 of a water pump carrier, and the roller and the roller shaft are assembled to achieve rolling connection.

[0025] refer to Figure 2 , Figure 4 The maximum axial distance between the fixed end face of the roller shaft 10 and the outer shell protrusion structure 31 is greater than the length of the roller shaft, or is equal to the length of the roller shaft. Alternatively, the length of the roller shaft 10 is greater than the maximum axial distance between the fixed end face of the roller shaft and the outer shell protrusion structure 31, but does not protrude much from the outer shell protrusion structure 31, so as to facilitate the packaging of the outer shell 30 and save material volume.

[0026] The roller shaft 10 is formed with an annular groove 11 , and the shaft hole 21 of the roller is provided with a convex structure that matches with the annular groove.

[0027] refer to Figure 3 , Figure 4 The roller shaft 10 includes a shaft base 12 and a shaft protrusion 13, the shaft base is fixedly connected to the housing 30, the shaft protrusion is installed on the shaft base, an annular groove 11 is formed between the shaft protrusion and the shaft base, and a convex structure matching the annular groove is provided in the shaft hole 21 of the roller. The shaft base 12 and the housing 30 are integrally formed.

[0028] like Figure 2 The annular groove 11 is located at the free end of the roller shaft 10. Figure 5 , Figure 6 The convex structure is located at one end of the roller shaft hole. The convex structure is a hook 22 integrally formed on the roller shaft hole.

[0029] like Figure 2 , Figure 3 The free end of the roller shaft 10 is chamfered, that is, the shaft protrusion 13 is chamfered, as shown in FIG. Figure 6 The hook 22 is inclined on the side facing the free end of the roller shaft 10, and the side facing away from the free end of the roller shaft is a straight surface. In this way, when assembling the roller 20, the chamfer contacts the inclined surface, and the hook 22 can smoothly pass over the free end of the roller shaft and cooperate with the annular groove 11. The straight surface of the hook 22 abuts against the side wall of the annular groove 11, and the roller 20 is stable on the roller shaft 10 and can roll along the roller shaft but will not fall off.

[0030] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A roller member for a high-pressure cleaning machine, comprising a roller shaft (10) and a roller (20), characterized in that: The roller shaft is fixedly connected to the outer shell (30) of the water pump carrier, and the roller and the roller shaft are assembled to achieve rolling connection.

2. The roller member of the high pressure cleaning machine according to claim 1, characterized in that: The maximum axial distance between the fixed end surface of the roller shaft (10) and the housing protruding structure (31) is greater than the length of the roller shaft, or is equal to the length of the roller shaft.

3. The roller member of the high pressure cleaning machine according to claim 1, characterized in that: The length of the roller shaft (10) is greater than the maximum axial distance between the fixed end surface of the roller shaft and the housing protruding structure (31).

4. The roller member of the high pressure cleaning machine according to claim 1, characterized in that: The roller shaft (10) is formed with an annular groove (11), and the shaft hole (21) of the roller is provided with a convex structure that matches the annular groove.

5. The roller member of the high pressure cleaning machine according to claim 1, characterized in that: The roller shaft (10) comprises a shaft base (12) and a shaft protrusion (13); the shaft base is fixedly connected to a housing (30); the shaft protrusion is mounted on the shaft base; an annular groove (11) is formed between the shaft protrusion and the shaft base; and a convex structure matching the annular groove is provided in the shaft hole (21) of the roller.

6. The roller member of the high pressure cleaning machine according to claim 5, characterized in that: The shaft base (12) and the housing (30) are integrally formed.

7. The roller member of the high pressure cleaning machine according to claim 1 or 5, characterized in that: The annular groove (11) is located at the free end of the roller shaft (10), and the convex structure is located at one end of the roller shaft hole.

8. The roller member of the high pressure cleaning machine according to claim 1 or 5, characterized in that: The convex structure is a hook (22) integrally formed on the roller shaft hole.

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