Quick-change structure of weeding machine

Abstract

The utility model relates to a weeder quick change structure, including output shaft and work brush, the output shaft is provided with locating flat, knob, torsion spring and two gasket, locating flat is provided with two card hole, two card slot and mounting hole, the card hole is slidingly provided with spacing steel ball, the torsion spring is sleeved on the locating flat and is located the spacing steel ball, and the work brush is located on the mounting hole. The clamping grooves are sleeved with the two gaskets respectively, the torsional spring and the positioning flat are sleeved with the rotary knob, the installation hole is used for containing the connecting end of the working brush, the rotary knob is provided with two protruding parts used for twisting, grooves for containing the two ends of the torsional spring are formed in the protruding parts, and adjusting faces used for being matched with the limiting steel balls in a limiting mode are symmetrically arranged in the rotary knob. The adjusting face comprises a first containing face and a second containing face used for containing the limiting steel balls. According to the quick replacement structure of the weeding machine, quick replacement of different types of working brushes is achieved, and the disassembly and assembly efficiency of the working brushes is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of weeders, in particular to a quick-change structure of a weeder. Background Art

[0002] The existing lawn mower generally includes a motor, a gear box, an output shaft and a working brush. The motor is connected to the output shaft through the gear box, and the connecting end of the output shaft and the working brush need to be fixedly connected by multiple bolt assemblies. This connection method is cumbersome to operate and greatly reduces the efficiency of disassembly and assembly. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a quick-change structure for a weeder, which realizes the rapid replacement of working brushes of different models and greatly improves the efficiency of disassembling and assembling the working brushes.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a quick-change structure of a lawn mower, including an output shaft and a working brush, the output shaft is provided with a positioning flat, a knob, a torsion spring and two gaskets, the positioning flat is provided with two clamping holes, two clamping grooves and a mounting hole, a limiting steel ball is slidably arranged in the clamping hole, the torsion spring is sleeved on the positioning flat and located below the limiting steel ball, two gaskets are respectively sleeved on the clamping groove, the knob is sleeved on the positioning flat, the limiting steel ball and the torsion spring, the two gaskets are respectively located at the upper and lower ends of the knob, and the mounting hole is used to accommodate the connecting end of the working brush.

[0005] The knob is provided with two protrusions for twisting, and grooves for accommodating the two ends of the torsion spring are provided in the protrusions. Adjustment surfaces for cooperating with the limiting steel balls are symmetrically provided inside the knob, and the adjustment surfaces include a first accommodating surface and a second accommodating surface for accommodating the limiting steel balls.

[0006] When the knob is in a natural state, the two limiting steel balls are respectively located in the clamping holes and contact the first accommodating surface to fix the working brush; when the knob is in a twisted state, the two limiting steel balls respectively fall from the clamping holes to the second accommodating surface, so that the limiting steel balls are separated from the limiting of the working brush and the working brush is disassembled.

[0007] The above-mentioned lawn mower quick-change structure is provided with two limit steel balls and mounting holes on the positioning flat of the output shaft, a torsion spring is sleeved on the positioning flat and located below the limit steel balls, and a knob is sleeved on the torsion spring. The connecting end of the working brush extending into the mounting hole is fixed and disassembled by rotating the knob to cooperate with the torsion spring and the two limit steel balls respectively. The lawn mower quick-change structure can not only quickly replace the working brush, but also greatly improve the efficiency of disassembling and assembling the working brush.

[0008] In one embodiment, the positioning flat of the lawn mower quick-change structure includes two symmetrically arranged horizontal planes and two symmetrically arranged arcuate planes, the two clamping holes are symmetrically arranged on the two horizontal planes, and the two clamping slots are symmetrically arranged on the upper and lower ends of the two arcuate planes.

[0009] In one of the embodiments, two limiting parts for limiting the horizontal plane are symmetrically arranged on the knob of the quick-change structure of the lawn mower.

[0010] In one of the embodiments, the working brush of the quick-change structure of the lawn mower includes a brush head and a mounting shaft, the brush head is connected to the mounting shaft, and the mounting shaft is provided with an arc-shaped groove for fixedly engaging with two limiting steel balls.

[0011] In one embodiment, the brush head of the lawn mower quick-change structure includes a plurality of bristles arranged in a circumferential array.

[0012] The beneficial effects of this application are:

[0013] The present application provides a quick-change structure for a lawn mower, wherein two limit steel balls and a mounting hole are arranged on the positioning flat of the output shaft, a torsion spring is sleeved on the positioning flat and located below the two limit steel balls, and a knob is sleeved on the torsion spring. The knob is rotated to cooperate with the torsion spring and the two limit steel balls to fix and remove the connecting end of the working brush extending into the mounting hole. The quick-change structure for a lawn mower can not only quickly replace the working brush, but also greatly improve the efficiency of disassembling and assembling the working brush.

[0014] The quick-change structure uses a rotating knob to replace the working brush and also reduces the hand contact between the operator and the working brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a quick-change structure of a lawn mower according to an embodiment of the present application;

[0016] Figure 2 A schematic diagram of the interior of a quick-change structure of a lawn mower according to an embodiment of the present application;

[0017] Figure 3 A schematic diagram of an output shaft of a quick-change structure of a lawn mower according to an embodiment of the present application;

[0018] Figure 4 A schematic diagram of a knob of a quick-change structure of a lawn mower according to an embodiment of the present application from one perspective;

[0019] Figure 5 A schematic diagram of another perspective of the knob of the quick-change structure of the lawn mower according to an embodiment of the present application;

[0020] Figure 6A schematic diagram of a working brush of a quick-change structure of a lawn mower according to an embodiment of the present application;

[0021] Figure 7 It is a schematic diagram of the knob and the positioning plate of the quick-change structure of the lawn mower according to the embodiment of the present application in a natural state;

[0022] in:

[0023] 1. Output shaft; 2. Working brush; 11. Positioning flat; 12. Knob; 13. Torsion spring; 14. Gasket; 111. Clamp hole; 112. Clamp slot; 113. Mounting hole; 114. Limiting steel ball; 115. Horizontal plane; 116. Arc surface; 121. Protrusion; 122. Groove; 123. First accommodating surface; 124. Second accommodating surface; 125. Limiting part; 21. Brush head; 22. Mounting shaft; 23. Brush hair; 221. Arc groove. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-Figure 3 As shown, an embodiment of the present application provides a quick-change structure of a lawn mower, including an output shaft 1 and a working brush 2, wherein the output shaft 1 is provided with a positioning flat 11, a knob 12, a torsion spring 13 and two gaskets 14, wherein the positioning flat 11 is provided with two clamping holes 111, two clamping grooves 112 and a mounting hole 113, wherein a limiting steel ball 114 is slidably arranged in the clamping hole 111, the torsion spring 13 is sleeved on the positioning flat 11 and is located below the limiting steel ball 114, the two gaskets 14 are respectively sleeved on the clamping groove 112, the knob 12 is sleeved on the positioning flat 11, the limiting steel ball 114 and the torsion spring 13, the two gaskets 14 are respectively located at the upper and lower ends of the knob 12, and the mounting hole 113 is used to accommodate the connecting end of the working brush 2.

[0026] like Figure 4 , Figure 5 As shown, the knob 12 is provided with two protrusions 121 for twisting, and the protrusions 121 are provided with grooves 122 for accommodating the two ends of the torsion spring 13. The knob 12 is symmetrically provided with adjustment surfaces for cooperating with the limiting steel ball 114, and the adjustment surfaces include a first accommodating surface 123 and a second accommodating surface 124 for accommodating the limiting steel ball 114.

[0027] like Figure 7As shown, when the knob 12 is in a natural state, the two limiting steel balls 114 are respectively located in the clamping hole 111 and contact the first accommodating surface 123 to fix the working brush 2. When the knob 12 is in a twisted state, the two limiting steel balls 114 respectively fall from the clamping hole 111 to the second accommodating surface 124, so that the limiting steel balls 114 are separated from the limiting of the working brush 2, and the working brush 2 is disassembled.

[0028] Specifically, two clamping holes 111 are symmetrically arranged on two horizontal surfaces 115 of the positioning flat 11 of the output shaft 1, two clamping grooves 112 are arranged at the upper and lower ends of the two arc-shaped surfaces 116 of the positioning flat 11, two limiting steel balls 114 are respectively slidably matched with the clamping holes 111, the torsion spring 13 is sleeved on the positioning flat 11 and is located below the two limiting steel balls 114, the knob 12 is sleeved on the torsion spring 13, so that the two ends of the torsion spring 13 are located in the groove 122 of the raised portion 121 of the knob 12, and two adjustment surfaces are arranged inside the knob 12, the first accommodating surface 123 of the adjustment surface corresponds to the clamping hole 111, the second accommodating surface 124 is located on one side of the first accommodating surface 123, and the second accommodating surface 124 can accommodate the limiting steel balls 114. Among them, two gaskets 14 are respectively sleeved on the clamping grooves 112 and are respectively located at the top and the bottom of the knob 12.

[0029] When the knob 12 is in the natural state, the two limiting steel balls 114 are respectively located in the clamping hole 111 and contact the first accommodating surface 123, fixing the working brush 2 mounting shaft 22. When the knob 12 is turned, the two limiting steel balls 114 fall out of the clamping hole 111 and are located in the second accommodating surface 124. The limiting steel balls 114 are separated from the limiting of the working brush 2 mounting shaft 22, and the working brush 2 can be disassembled. Loosen the knob 12, and the knob 12 returns to the natural state under the action of the torsion spring 13. The output shaft 1 is connected to the motor through a gear box, and the motor drives the gear box to drive the output shaft 1 and the working brush 2 to rotate for weeding.

[0030] In the above structure, the positional relationship between the limit steel ball 114 and the clamping hole 111 is adjusted by setting an adjustment surface on the knob 12, so as to achieve the fixing and removal of the working brush 2. The lawn mower quick-change structure realizes the rapid replacement of working brushes 2 of different models, greatly improves the replacement efficiency, and reduces the contact between the hand and the working brush 2.

[0031] like Figure 3 As shown, in one embodiment, the positioning flat 11 of the lawn mower quick-change structure includes two symmetrically arranged horizontal surfaces 115 and two symmetrically arranged arcuate surfaces 116, the two clamping holes 111 are symmetrically arranged on the two horizontal surfaces 115, and the two clamping slots 112 are symmetrically arranged at the upper and lower ends of the two arcuate surfaces 116. The structural setting of the positioning flat 11 facilitates the rotation of the knob 12.

[0032] like Figure 4 , Figure 5 As shown, in one embodiment, two limiting portions 125 for limiting the horizontal plane 115 are symmetrically arranged on the knob 12 of the lawn mower quick-change structure.

[0033] Specifically, the limiting portion 125 is a triangular structure. When the knob 12 is in a natural state, the two limiting portions 125 respectively abut against one end of the two horizontal surfaces 115 of the positioning flat 11. When the knob 12 is rotated, the two limiting portions 125 respectively abut against the other end of the two horizontal surfaces 115 of the positioning flat 11. The axis of the limiting portion 125 corresponds to the intersection of the first accommodating surface 123 and the second accommodating surface 124. The setting of the limiting portion 125 facilitates limiting the rotation arc of the knob 12.

[0034] like Figure 6 As shown, in one embodiment, the working brush 2 of the quick-change structure of the lawn mower includes a brush head 21 and a mounting shaft 22 , the brush head 21 is connected to the mounting shaft 22 , and the mounting shaft 22 is provided with an arc-shaped groove 221 for fixedly matching with two limiting steel balls 114 .

[0035] Specifically, when the knob 12 is turned so that the two limiting steel balls 114 are located in the second accommodation surface 124, the installation shaft 22 of the working brush 2 is extended into the installation hole 113 of the positioning flat 11, and the knob 12 is loosened. The two limiting steel balls 114 return to between the clamping hole 111 and the first accommodation surface 123 as the knob 12 is rotated, and are clamped on the arc groove 221 of the installation shaft 22 to fix the installation shaft 22. The arc groove 221 of the installation shaft 22 is arranged to facilitate fixed cooperation with the limiting steel balls 114.

[0036] like Figure 6 As shown, in one embodiment, the brush head 21 of the quick-change structure of the weed remover includes a plurality of bristles 23 arranged in a circumferential array. This arrangement facilitates the cleaning of weeds.

[0037] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A quick-change structure for a lawn mower, characterized in that: The invention comprises an output shaft (1) and a working brush (2). The output shaft (1) is provided with a positioning flat plate (11), a knob (12), a torsion spring (13) and two gaskets (14). The positioning flat plate (11) is provided with two clamping holes (111), two clamping grooves (112) and a mounting hole (113). A limiting steel ball (114) is slidably arranged in the clamping hole (111). The torsion spring (13) is sleeved on the positioning flat plate (11) and is located below the limiting steel ball (114). The two gaskets (14) are respectively sleeved on the clamping groove (112). The knob (12) is sleeved on the positioning flat plate (11), the limiting steel ball (114) and the torsion spring (13). The two gaskets (14) are respectively located at the upper and lower ends of the knob (12). The mounting hole (113) is used to accommodate the connection end of the working brush (2). The knob (12) is provided with two protrusions (121) for twisting, and the protrusions (121) are provided with grooves (122) for accommodating the two ends of the torsion spring (13). The knob (12) is provided with two adjustment surfaces for limiting the position with the limiting steel ball (114), and the adjustment surfaces include a first accommodating surface (123) and a second accommodating surface (124) for accommodating the limiting steel ball (114). When the knob (12) is in a natural state, the two limiting steel balls (114) are respectively located in the clamping hole (111) and in contact with the first accommodating surface (123), thereby fixing the working brush (2); when the knob (12) is in a twisted state, the two limiting steel balls (114) respectively fall from the clamping hole (111) to the second accommodating surface (124), thereby causing the limiting steel balls (114) to be separated from the limiting position of the working brush (2), thereby allowing the working brush (2) to be disassembled.

2. The quick-change structure of the lawn mower according to claim 1, characterized in that: The positioning plate (11) comprises two symmetrically arranged horizontal surfaces (115) and two symmetrically arranged arcuate surfaces (116); the two clamping holes (111) are symmetrically arranged on the two horizontal surfaces (115), and the two clamping grooves (112) are symmetrically arranged at the upper and lower ends of the two arcuate surfaces (116).

3. The quick-change structure of the lawn mower according to claim 2, characterized in that: The knob (12) is symmetrically provided with two limiting portions (125) for limiting the horizontal plane (115).

4. The quick-change structure of the lawn mower according to claim 1, characterized in that: The working brush (2) comprises a brush head (21) and a mounting shaft (22); the brush head (21) is connected to the mounting shaft (22); and the mounting shaft (22) is provided with an arc-shaped groove (221) for fixedly matching with two limiting steel balls (114).

5. The quick-change structure of the lawn mower according to claim 4, characterized in that: The brush head (21) comprises a plurality of bristles (23) arranged in a circumferential array.

Images