Lawn mower with telescopic handle

Abstract

The mower comprises a main machine part and a handle part, the handle part is connected to the rear end of the main machine part, the handle part comprises a long pipe and a sleeve, the sleeve is connected to the long pipe in a sleeved mode and can slide relative to the long pipe, and a limiting sleeve is installed at the end, away from the main machine part, of the long pipe. The limiting sleeve is provided with a limiting hook protruding outwards in the radial direction, a limiting rib matched with the limiting hook and used for limiting the sleeve to be separated from the long pipe is arranged on the inner wall of the sleeve, a locking threaded sleeve used for locking sliding of the sleeve is arranged at the end, facing the main machine part, of the sleeve, and a holding part is formed at the end, away from the main machine part, of the sleeve. The telescopic handle of the mower is simple in structure, convenient to operate, low in manufacturing cost and suitable for safe operation of users with different heights on the premise of meeting safety requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, in particular to a lawn mower with a telescopic handle. Background Art

[0002] A push lawn mower generally comprises a main body part and a handle part connected to the main body part. The handle part is for a user to hold to push the lawn mower to move. The handle part is also provided with a switch so that the user can control the operation of the lawn mower.

[0003] There are roughly two types of handles for lawn mowers on the market. One is a fixed-length handle that does not have a retractable function and is difficult to accommodate users of different heights. The other is a retractable handle that meets the safety requirements of safety regulations regarding the distance between the user and the blade during use, but this type of handle is often complex in structure and cumbersome to adjust. Summary of the invention

[0004] In order to solve the problems of the prior art, the utility model aims to provide a lawn mower with a retractable handle, which has a simple structure, is easy to operate, and meets safety regulations.

[0005] To achieve the above-mentioned purpose, the utility model proposes a lawn mower with a retractable handle, which includes a main body part and a handle part. The handle part is connected to the rear end of the main body part, and the handle part includes a long tube and a sleeve. The sleeve is sleeved on the long tube and can slide relative to the long tube. A limiting sleeve is installed at one end of the long tube away from the main body part. The limiting sleeve has a limiting hook protruding radially outward. A limiting rib is provided on the inner wall of the sleeve, which cooperates with the limiting hook and is used to limit the sleeve from separating from the long tube. A locking screw sleeve is provided at one end of the sleeve facing the main body part to lock its sliding. A gripping portion is formed at one end of the sleeve away from the main body part.

[0006] In one embodiment, the limiting sleeve is sleeved in the long tube, and has a first end and a second end opposite to each other. The limiting hook is located at the first end, and the second end is provided with a mounting hook protruding radially outward.

[0007] In one embodiment, the radially protruding dimension of the limiting hook is larger than that of the mounting hook.

[0008] In one embodiment, a groove is formed at one end of the long tube away from the main body part for cooperating with the limiting hook and allowing the limiting hook to extend from the groove. The long tube also has a mounting hole for cooperating with the mounting hook to mount the limiting sleeve to the long tube.

[0009] In one embodiment, there are two limit hooks and two installation hooks, both of which are symmetrically distributed on the circumference of the limit sleeve with respect to the central axis, and the positions of the limit hooks and the installation hooks correspond one to one in the direction of the central axis.

[0010] In one embodiment, there is a gap between each of the limiting hooks and the mounting hook and the wall of the limiting sleeve.

[0011] In one embodiment, the limiting hook includes an outer wall and a pair of side walls, the pair of side walls are connected to the inner wall of the limiting sleeve through inclined surfaces, and the outer wall and the side walls together form an open cavity.

[0012] Beneficial effects:

[0013] The telescopic handle of the lawn mower of the present invention is limited by installing a limiting sleeve at the end of a long tube and then using ribs on the inner wall of the sleeve to limit the position. The structure is simple, the adjustment is convenient, the investment cost is low, and the design of the limiting sleeve makes it have a certain elasticity and sufficient strength, and the reliability is good. In addition, the present invention meets the requirements of safety regulations for the safe distance of lawn mowers, and users of different heights can safely use the lawn mower. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described and elaborated below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of a lawn mower with a retractable handle according to a preferred embodiment of the utility model.

[0016] Figure 2 yes Figure 1 Schematic diagram of the internal structure of the handle part of the lawn mower, in which half of the sleeve of the handle part is removed.

[0017] Figure 3 yes Figure 1 Exploded view of the handle section of the lawn mower.

[0018] Figure 4 It is a three-dimensional schematic diagram of the limiting sleeve of the handle part.

[0019] Figure 5 yes Figure 4 Cross-sectional view of the middle limit sleeve.

[0020] Figure 6 This is another diagram of the internal structure of the handle part.

[0021] Reference numerals:

[0022] 100. Lawn mower; 1. Main unit; 2. Handle; 3. Limit sleeve; 3a. First end; 3b. Second end; 4. Spring cable; 5. Locking screw; 20. Switch; 21. Long tube; 22. Sleeve; 22a. Left shell; 22b. Right shell; 23. Grip; 31. Limit hook; 32. Mounting hook; 33. Gap between limit hook and limit sleeve; 34. Gap between mounting hook and limit sleeve; 211. Groove; 212. Mounting hole; 220. Limit rib; 221. Axial groove; 222. External thread; 311. Outer wall; 312. Side wall; 313. Inclined surface; 314. Cavity; L. Telescopic distance. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be more clearly and completely explained below by describing the preferred embodiments of the present invention in combination with the accompanying drawings.

[0024] like Figure 1 In the preferred embodiment shown, the lawn mower 100 with a retractable handle of the utility model comprises a main body part 1 and a handle part 2. The handle part 2 is connected to the rear end of the main body part 1, and is held by the user to push the lawn mower 100 to move, and to operate the switch 20 on the handle part 2 to control the operation of the lawn mower 100. The main body part 1 comprises a motor, a blade, a wheel, etc. The improvements of the utility model do not involve the main body part, which can adopt the existing technology and will not be described in detail here.

[0025] like Figure 2 and Figure 3 As shown, the handle part 2 includes a long tube 21 and a sleeve 22, wherein one end of the long tube 21 is directly connected to the main body part 1, and the other end of the long tube 21 is connected to the sleeve 22. Specifically, the sleeve 22 is sleeved on the long tube 21 and can slide relative to the long tube 21, thereby realizing the retractable function of the handle part 2. A limiting sleeve 3 is installed at one end of the long tube 21 away from the main body part 1, which is used to limit the sleeve 22 from being separated from the long tube 21, so that the two are always connected, and at the same time, it also limits the maximum length to which the handle part 2 can be extended.

[0026] Combination Figures 2 to 4 As shown, the limiting sleeve 3 has a first end 3a and a second end 3b opposite to each other, wherein the first end 3a is provided with a limiting hook 31 protruding radially outward, and the second end 3b is provided with a mounting hook 32 protruding radially outward. The radially protruding dimension of the limiting hook 31 is greater than the radially protruding dimension of the mounting hook 32. In this embodiment, there are two limiting hooks 31 and two mounting hooks 32, and they are symmetrically distributed on the circumference of the limiting sleeve 3 with respect to the central axis. Those skilled in the art can imagine that in other embodiments, the limiting hooks 31 and the mounting hooks 32 can also be selected in other numbers, and the utility model does not limit the number.

[0027] Furthermore, the limiting hook 31 includes an outer wall 311 and a pair of side walls 312, the pair of side walls 312 are respectively connected to the two sides of the outer wall 311, the side wall 312 is connected to the inner wall of the limiting sleeve 3 through the inclined surface 313, and the outer wall 311 and the side wall 312 together form an open cavity 314. At the same time, there is a gap 33 between the two sides of the limiting hook 31 and the cylinder wall of the limiting sleeve 3. Such a structural design can well support the protruding outer wall 311 on the one hand, so that the limiting hook 31 has sufficient strength, and on the other hand, it also makes the limiting hook 31 have a certain elasticity, which can produce a certain displacement relative to the limiting sleeve 3, so as to facilitate assembly into the long tube 21.

[0028] Furthermore, the positions of the mounting hook 32 and the limiting hook 31 in the direction of the central axis of the limiting sleeve 3 correspond one to one, and there is a gap 34 between the two sides of the mounting hook 32 and the tube wall of the limiting sleeve 3. Such a structural design makes the mounting hook 32 also have a certain elasticity, thereby further facilitating the assembly to the long tube 21.

[0029] A groove 211 is formed at one end of the long tube 21 away from the main body part 1, which is used to cooperate with the limiting hook 31 and allow the limiting hook 31 to extend from the groove 211. A mounting hole 212 is also formed on the long tube 21, which is used to cooperate with the mounting hook 32. In the assembled state, the limiting hook 31 is stuck in the groove 211 and extends from the groove 211, and the mounting hook 32 extends from the mounting hole 212 to hook the tube wall of the long tube 21, so that the limiting sleeve 3 is installed on the long tube 21.

[0030] In order to limit the position of the sleeve 22, a limiting rib 220 is provided on the inner wall of the sleeve 22. The limiting rib 220 is close to the end of the sleeve 22 facing the main body part 1, and extends radially from the inner wall of the sleeve 22 toward the center of the sleeve 22, and is used to cooperate with the limiting hook 31 to provide a barrier for the limiting hook 31 to prevent the sleeve 22 from detaching from the long tube 21 when the sleeve 22 slides and extends relative to the long tube 21. When the sleeve 22 slides until the limiting hook 31 contacts the limiting rib 220, it indicates that the sleeve 22 has slid and extended to the limit position, that is, the handle part 2 reaches the maximum length.

[0031] like Figure 6As shown, the handle part 2 is in a state of being extended to the longest length. The limit rib 220 of the sleeve 22 constitutes the limit of the longest length, and the end of the sleeve 22 forms a gripping portion 23 for the user to grasp. The gripping portion 23 constitutes the limit of the sleeve 22 sliding and contracting to the shortest length. Therefore, the distance between the two limits is the sliding distance L of the sleeve 22, which is also the retractable length of the handle part 2. A spring cable 4 is provided in the handle part 2, one end of which is connected to the motor controller of the host part 1, and the other end is connected to the switch 20. The spring cable 4 has a retractable performance, so it can match the retractable handle part 2 well. No matter what length the handle part 2 is in, the electrical connection between the switch 20 and the host part 1 can be maintained.

[0032] The sleeve 22 is also provided with a locking nut 5 for locking its sliding. Specifically, the sleeve 22 is composed of a left housing 22a and a right housing 22b. The sleeve 22 is provided with a plurality of axial grooves 221 along its circumferential direction at one end facing the main body part 1, so that the opening of the end can be contracted. The groove bottom of the axial groove 221 is provided with an external thread 222 adjacent to the external thread 222 for cooperating with the locking nut 5. When the locking nut 5 is tightened with the external thread 222, the end of the sleeve 22 with the axial groove 221 is compressed to a reduced diameter and pressed on the long tube 21, so that the sleeve 22 cannot continue to slide, thereby being locked in this position; when it is necessary to adjust the length of the handle part 2, the user only needs to loosen the locking nut 5, and can adjust it by sliding the sleeve 22. When it is adjusted to the required length, the locking nut 5 is tightened again, so that the telescopic handle of the utility model is more convenient to adjust, and the structure is simpler and the manufacturing cost is low.

[0033] In this embodiment, the retractable handle portion 2 can be adjusted to a length of 240 mm. At the same time, by adjusting the angle between the handle portion 2 and the horizontal plane, the angle range is 25° to 70°, thereby ensuring a safe distance between the user and the rotating blade of the main body portion 1, so that users of different heights can use it safely, which fully complies with the safety regulations for the safety distance of lawn mowers.

[0034] The above specific implementations are only descriptions of the preferred implementations of the utility model, and do not limit the protection scope of the utility model. Under the premise of not departing from the design concept and spirit of the utility model, various deformations, substitutions and improvements made by ordinary technicians in this field to the technical solution of the utility model based on the text description and drawings provided by the utility model should all fall within the protection scope of the utility model. The protection scope of the utility model is determined by the claims.

Claims

1. A lawn mower with a retractable handle, comprising a main body part and a handle part, wherein the handle part is connected to the rear end of the main body part, characterized in that: The handle part includes a long tube and a sleeve, the sleeve is sleeved on the long tube and can slide relative to the long tube, a limiting sleeve is installed at one end of the long tube away from the main machine part, the limiting sleeve has a limiting hook protruding radially outward, the inner wall of the sleeve is provided with a limiting rib that cooperates with the limiting hook and is used to limit the sleeve from separating from the long tube, the end of the sleeve facing the main machine part is provided with a locking screw sleeve for locking its sliding, and the end of the sleeve away from the main machine part forms a gripping part.

2. The lawn mower according to claim 1, characterized in that The limiting sleeve is sleeved in the long tube and has a first end and a second end opposite to each other. The limiting hook is located at the first end, and the second end is provided with a mounting hook protruding radially outward.

3. The lawn mower according to claim 2, characterized in that The radially protruding dimension of the limiting hook is larger than that of the mounting hook.

4. The lawn mower according to claim 3, characterized in that A groove is formed at one end of the long tube away from the main body part for cooperating with the limit hook and allowing the limit hook to extend from the groove. A mounting hole is also formed on the long tube for cooperating with the mounting hook so as to mount the limit sleeve to the long tube.

5. The lawn mower according to claim 2, characterized in that There are two limit hooks and two installation hooks respectively, both of which are symmetrically distributed on the circumference of the limit sleeve with respect to the central axis, and the positions of the limit hooks and the installation hooks correspond one to one in the direction of the central axis.

6. The lawn mower according to claim 5, characterized in that There is a gap between each of the limiting hooks and the mounting hook and the wall of the limiting sleeve.

7. The lawn mower according to claim 6, characterized in that The limiting hook comprises an outer wall and a pair of side walls, the pair of side walls are connected to the inner wall of the limiting sleeve via inclined surfaces, and the outer wall and the side walls together form an open cavity.

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