Pull rod fixing structure of cleaning machine

Abstract

The utility model provides a pull rod fixing structure of a cleaning machine, and belongs to the technical field of high-pressure cleaning machines. The problem that an existing pull rod installation structure is poor in reliability is solved. The pull rod fixing structure of the cleaning machine comprises a machine shell and a pull rod assembly, the pull rod assembly comprises a main sleeve, a positioning groove is formed in the back face of the machine shell in the vertical direction, an upper limiting fence is arranged above the positioning groove, a lower limiting fence is arranged below the positioning groove, and the upper portion of the main sleeve is located on the inner side of the upper limiting fence. The middle of the main sleeve is located in the positioning groove, the lower portion of the main sleeve is located on the inner side of the lower limiting fence, and the lower end of the main sleeve is connected with the machine shell through screws. According to the structure, the upper limiting fence, the positioning groove and the lower limiting fence sequentially limit the upper portion, the middle portion and the lower portion of the main sleeve, the main sleeve cannot shake front and back and left and right, the lower end of the main sleeve is fixed through the screws, axial positioning of the main sleeve is achieved, and mounting and fixing of the main sleeve have good reliability.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-pressure cleaning machines, in particular to a pull rod fixing structure of a cleaning machine. Background Art

[0002] A high-pressure washer uses a high-pressure plunger pump to generate high-pressure water to wash surfaces, removing dirt and washing it away. A high-pressure washer typically has a lever on the back of its housing that is used to move the washer.

[0003] Currently, the China Patent Network discloses a vertical high-pressure washer [Authorization Announcement No.: CN201472329U], which includes a handle and two parallel pull rod assemblies perpendicular to the handle. The pull rod assembly includes a sleeve and a first pull rod that slides within the sleeve. The sleeve is fixed to the back of the high-pressure washer housing, and the lower end of the sleeve is fixed to the housing with screws. However, the mounting structure of the sleeve on the housing is not very secure, prone to shaking, and the connection is also prone to loosening, resulting in poor reliability of the pull rod mounting structure. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems in the existing technology and propose a pull rod fixing structure for a cleaning machine. The technical problem to be solved by the utility model is: how to improve the reliability of the pull rod installation structure.

[0005] The purpose of this utility model can be achieved through the following technical solutions:

[0006] A pull rod fixing structure for a cleaning machine includes a casing and a pull rod assembly, wherein the pull rod assembly includes a main sleeve, and is characterized in that a positioning groove is provided on the back of the casing in a vertical direction, an upper limit enclosure is provided above the positioning groove, and a lower limit enclosure is provided below the positioning groove. The upper part of the main sleeve is located on the inner side of the upper limit enclosure, the middle part of the main sleeve is located in the positioning groove, and the lower part of the main sleeve is located on the inner side of the lower limit enclosure. The lower end of the main sleeve is connected to the casing by screws.

[0007] The main sleeve of this structure passes through the upper limit enclosure, positioning groove and lower limit enclosure from top to bottom in sequence. The upper limit enclosure limits the upper part of the main sleeve, so that the upper part of the main sleeve cannot swing forward and backward, left and right; the lower limit enclosure limits the lower part of the main sleeve, so that the lower part of the main sleeve cannot swing forward and backward, left and right; the positioning groove limits the middle part of the main sleeve, so that the middle part of the main sleeve cannot swing left and right. The upper limit enclosure, positioning groove and lower limit enclosure in this structure limit the upper, middle and lower parts of the main sleeve in sequence, so that the main sleeve cannot swing forward and backward, left and right. In addition, the screws fix the lower end of the main sleeve to achieve axial positioning of the main sleeve, making the installation and fixation of the main sleeve more reliable.

[0008] In the aforementioned rod fixing structure for a cleaning machine, a limiting protrusion is provided on the outer side wall of the upper portion of the main sleeve, a pressure plate is fixed to the back of the housing, and a limiting plate is provided on the inner side of the pressure plate. The upper end of the limiting protrusion is disposed proximate to the lower surface of the limiting plate. The arrangement of the pressure plate causes the upper end of the limiting protrusion to be disposed proximate to the lower surface of the limiting plate, thereby axially limiting the upper portion of the main sleeve. Combined with the limiting screw, the axial limiting of the main sleeve is highly reliable.

[0009] In the aforementioned tie rod fixing structure for a cleaning machine, the pressure plate has a reinforcement portion that wraps around the outer periphery of the upper limit enclosure. The inner side of the reinforcement portion has reinforcing ribs that abut against the outer wall of the upper limit enclosure. When the tie rod is used to push the high-pressure cleaning machine, the upper limit enclosure is susceptible to stress. This arrangement strengthens the upper limit enclosure, preventing it from cracking and thereby ensuring reliable installation of the main sleeve.

[0010] In the aforementioned tie rod fixing structure for a cleaning machine, the upper limit fence has a vertical length shorter than the lower limit fence. The lower limit fence completely covers the lower portion of the sleeve, effectively limiting the lower portion of the sleeve and further improving the reliability of the main sleeve installation structure.

[0011] In the aforementioned tie rod fixing structure for a cleaning machine, a stopper is provided within the housing, the lower end of the main sleeve rests against the stopper, and a positioning hole is defined on the outer side wall of the lower end of the main sleeve, through which the screw is inserted. When the tie rod is installed from top to bottom, the lower end of the main sleeve rests against the stopper, indicating that the installation position is in place. The screw is then rotated so that it is inserted into the positioning hole, thereby achieving axial positioning of the main sleeve.

[0012] Compared with the prior art, the pull rod fixing structure of the cleaning machine of the utility model has the following advantages: the upper limit enclosure, positioning groove and lower limit enclosure in this structure limit the upper, middle and lower parts of the main sleeve in turn, so that the main sleeve cannot swing back and forth or left and right. In addition, the screws fix the lower end of the main sleeve to achieve axial positioning of the main sleeve, so that the installation and fixation of the main sleeve has better reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the main view of the present utility model.

[0014] Figure 2 It is a three-dimensional structural diagram of the casing of the utility model.

[0015] Figure 3 It is a three-dimensional structural diagram of the utility model.

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0017] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure of part A in the middle.

[0018] Figure 6 yes Figure 4 Schematic diagram of the enlarged structure of part B in the middle.

[0019] In the figure, 1. casing; 2. pull rod assembly; 3. main sleeve; 30. upper part; 31. middle part; 32. lower part; 33. limiting protrusion; 34. positioning hole; 4. positioning groove; 5. upper limit enclosure; 6. lower limit enclosure; 7. screw; 8. pressure plate; 80. limiting plate; 81. reinforcement part; 9. limiting platform. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] like Figures 1 to 3As shown, the pull rod fixing structure of the cleaning machine includes a casing 1 and a pull rod assembly 2. The pull rod assembly 2 includes a main sleeve 3. A positioning groove 4 is provided on the back of the casing 1 in the vertical direction. An upper limit enclosure 5 is provided above the positioning groove 4, and a lower limit enclosure 6 is provided below the positioning groove 4. The upper part 30 of the main sleeve 3 is located on the inner side of the upper limit enclosure 5, the middle part 31 of the main sleeve 3 is located in the positioning groove 4, and the lower part 32 of the main sleeve 3 is located on the inner side of the lower limit enclosure 6. The lower end of the main sleeve 3 is connected to the casing 1 by a screw 7. The main sleeve 3 of this structure passes through the upper limit enclosure 5, the positioning groove 4 and the lower limit enclosure 6 from top to bottom. The upper limit enclosure 5 limits the upper part 30 of the main sleeve 3, so that the upper part 30 of the main sleeve 3 cannot swing forward and backward or left and right; the lower limit enclosure 6 limits the lower part 32 of the main sleeve 3, so that the lower part 32 of the main sleeve 3 cannot swing forward and backward or left and right; the positioning groove 4 limits the middle part of the main sleeve 3, so that the middle part 31 of the main sleeve 3 cannot swing left and right. The upper limit enclosure 5, the positioning groove 4 and the lower limit enclosure 6 in this structure limit the upper part 30, the middle part 31 and the lower part 32 of the main sleeve 3 in turn, so that the main sleeve 3 cannot swing forward and backward or left and right. In addition, the screw 7 fixes the lower end of the main sleeve 3 to achieve axial positioning of the main sleeve 3, so that the installation and fixation of the main sleeve 3 has good reliability.

[0022] like Figure 5 As shown, a retaining protrusion 33 is provided on the outer wall of the upper portion of the main sleeve 3. A pressure plate 8 is fixed to the back of the housing 1. A retaining plate 80 is provided inside the pressure plate 8. The upper end of the retaining protrusion 33 is positioned adjacent to the lower surface of the retaining plate 80. The placement of the pressure plate 8 positions the upper end of the retaining protrusion 33 adjacent to the lower surface of the retaining plate 80, thereby axially retaining the upper portion of the main sleeve 3. Combined with the retaining screw 7, this ensures reliable axial retention of the main sleeve 3. The pressure plate 8 has a reinforcement portion 81 that wraps around the outer periphery of the upper limit enclosure 5. The inner side of the reinforcement portion 81 has a reinforcing rib 82 that abuts against the outer wall of the upper limit enclosure 5. When the high-pressure cleaner is pushed by the pull rod, the upper limit enclosure 5 is easily subjected to stress. This structure strengthens the upper limit enclosure 5, preventing it from cracking and thus ensuring reliable installation of the main sleeve 3.

[0023] like Figure 6 As shown, the vertical length of the upper limit fence 5 is shorter than the vertical length of the lower limit fence 6. A stop platform 9 is provided within the housing 1, against which the lower end of the main sleeve 3 rests. A positioning hole 34 is defined on the outer wall of the lower end of the main sleeve 3, into which a screw 7 is inserted. When the pull rod is installed from top to bottom, the lower end of the main sleeve 3 rests against the stop platform 9, indicating that the installation position is in place. Screw 7 is then rotated until it is inserted into the positioning hole 34, thus limiting the axial position of the main sleeve 3.

[0024] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A rod fixing structure for a cleaning machine, comprising a housing (1) and a rod assembly (2), wherein the rod assembly (2) comprises a main sleeve (3), characterized in that: The back of the housing (1) has a positioning groove (4) provided vertically, an upper limit enclosure (5) is provided above the positioning groove (4), and a lower limit enclosure (6) is provided below the positioning groove (4). The upper portion (30) of the main sleeve (3) is located inside the upper limit enclosure (5), the middle portion (31) of the main sleeve (3) is located in the positioning groove (4), and the lower portion (32) of the main sleeve (3) is located inside the lower limit enclosure (6). The lower end of the main sleeve (3) is connected to the housing (1) by a screw (7).

2. The pull rod fixing structure of a cleaning machine according to claim 1, characterized in that: A limiting protrusion (33) is provided on the outer side wall of the upper portion of the main sleeve (3), a pressure plate (8) is fixed on the back side of the housing (1), a limiting plate (80) is provided on the inner side of the pressure plate (8), and the upper end of the limiting protrusion (33) is arranged close to the lower surface of the limiting plate (80).

3. The rod fixing structure of a cleaning machine according to claim 2, characterized in that: The pressure plate (8) has a reinforcement portion (81), the reinforcement portion (81) is wrapped around the periphery of the upper limit enclosure (5), and the inner side of the reinforcement portion (81) has a reinforcement rib (82) that abuts against the outer side wall of the upper limit enclosure (5).

4. The rod fixing structure of a cleaning machine according to claim 1, characterized in that: The vertical length of the upper limit enclosure (5) is smaller than the vertical length of the lower limit enclosure (6).

5. The pull rod fixing structure of a cleaning machine according to claim 1, characterized in that: The housing (1) has a limiting platform (9), the lower end of the main sleeve (3) abuts against the limiting platform (9), a positioning hole (34) is provided on the outer side wall of the lower end of the main sleeve (3), and the screw (7) is inserted into the positioning hole (34).

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