Grass trimmer

Abstract

The utility model discloses a grass trimmer. The grass trimmer comprises a grass trimmer head; a connecting hole is formed in one side of the rear seat shell; the connecting pipe is used for connecting the grass trimmer head and the rear seat shell, a first positioning hole is formed in the connecting pipe, and the connecting pipe can be inserted into the connecting hole; the driving assembly is installed in the rear seat shell and comprises a motor and a gear box, the gear box is installed in the direction of the output end of the motor, a connecting structure is arranged in the direction of the output end of the gear box, and the connecting structure is used for being connected with the connecting pipe; a locking groove extending in the axis direction of the connecting structure is formed in the connecting structure, a locking part and a locking screw are arranged on the side, provided with the locking groove, of the connecting structure, a second positioning groove is further formed in the connecting structure, and a positioning screw is arranged on the second positioning groove.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grass trimmers, and in particular to a grass trimmer. BACKGROUND

[0002] The grass trimmer as a kind of garden tool can be usually used to trim lawn, or to trim weeds beside corners, shrubs. The connecting pipe and the rear seat of the existing grass trimmer on the market are often a whole, which is difficult to be separately disassembled, so that the volume of the grass trimmer is large when it is transported, and when the rear seat or the grass trimmer head and the connecting pipe need to be repaired, the connecting pipe or the rear seat cannot be separately disassembled. Therefore, how to solve the above problems is the purpose of the present application.

[0003] The above content is only used to assist in understanding the technical solutions of the present application, and does not represent the acknowledgement of the above content as the closest prior art to the present application. SUMMARY

[0004] Therefore, the present application provides a grass trimmer to solve one of the above technical problems.

[0005] The technical scheme adopted by the present application to solve the technical problems is a grass trimmer, comprising: a grass trimmer head; a rear seat shell, one side of the rear seat shell is formed with a connecting hole; a connecting pipe for connecting the grass trimmer head and the rear seat shell, the connecting pipe is provided with a first positioning hole, and the connecting pipe can be inserted into the connecting hole; a driving assembly installed in the rear seat shell, the driving assembly comprises a motor and a gear box, the gear box is installed in the output end direction of the motor, the output end of the gear box is provided with a connecting structure, the connecting structure is used for connecting with the connecting pipe, the connecting structure is provided with a locking groove extending along the axis direction of the connecting structure, one side of the connecting structure provided with the locking groove is provided with a locking part and a locking screw, and the connecting structure is also provided with a second positioning groove, and the second positioning groove is provided with a positioning screw; the connecting pipe can be inserted into the connecting structure through the connecting hole when the locking screw and the positioning screw are not fixed, the positioning screw is used for aligning the first positioning groove and the second positioning groove, and the locking screw is used for locking the locking part to connect the connecting pipe.

[0006] In some embodiments, the gear box is provided with a reduction gear set, and the reduction gear set is a planetary gear set.

[0007] In some embodiments, the rear seat shell is provided with a threaded hole for fixing the positioning screw and the locking screw.

[0008] In some embodiments, the rear seat shell is provided with a plurality of heat dissipation air ducts.

[0009] In some embodiments, the inside of the rear seat shell is provided with a component support for supporting the driving assembly.

[0010] In some embodiments, the outer periphery of the connecting structure is provided with a fixing tube clamp for fixing the driving assembly inside the rear seat shell.

[0011] The application has the advantages that the rear seat shell and the connecting tube can be separated individually, the volume is reduced in transportation, the components can be replaced conveniently, the fixing of the connecting tube can be completed only by the locking screw and the positioning screw, the connecting tube can be disassembled and reinserted conveniently without alignment, and the positioning screw can be fixed by rotation. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0013] Figure 1 is a perspective view of the application.

[0014] Figure 2 is a perspective view of the inside structure of the rear seat shell of the application.

[0015] Figure 3 is a perspective view of the rear seat shell installation of the application.

[0016] Figure 4 is a perspective view of the gear box and the connecting structure of the application.

[0017] BRIEF DESCRIPTION OF DRAWINGS 1, grass trimmer head; 2, rear seat shell; 21, connecting hole; 22, heat dissipation air duct; 23, component support; 3, connecting tube; 31, first positioning groove; 4, driving assembly; 41, motor; 42, gear box; 421, speed reduction gear set; 43, connecting structure; 431, locking groove; 432, locking part; 433, second positioning groove; 434, locking screw; 435, positioning screw; 44, fixing tube clamp. DETAILED DESCRIPTION

[0018] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application. In addition, the technical solutions of various embodiments can be combined with each other, but the combination of the technical solutions should be based on the fact that a person of ordinary skill in the art can realize the combination, and when the combination of the technical solutions is contradictory or unachievable, it should be considered that the combination of the technical solutions does not exist and is not within the protection scope of the present application.

[0019] In the embodiments of the present application, as shown in the accompanying drawings, Figures 1-4 The present application provides a grass trimmer, which mainly comprises: a grass trimmer head 1; a rear seat shell 2, one side of the rear seat shell 2 is formed with a connecting hole 21; a connecting pipe 3 for connecting the grass trimmer head 1 and the rear seat shell 2, the connecting pipe 3 is provided with a first positioning hole, and the connecting pipe 3 can be inserted into the connecting hole 21; a driving assembly 4 installed in the rear seat shell 2, the driving assembly 4 comprises a motor 41 and a gear box 42, the gear box 42 is installed in the output direction of the motor 41, the output end of the gear box 42 is provided with a connecting structure 43, the connecting structure 43 is used for connecting the connecting pipe 3, the connecting structure 43 is provided with a locking groove 431 extending along the axis direction of the connecting structure 43, one side of the connecting structure 43 provided with the locking groove 431 is provided with a locking portion 432 and a locking screw 434, and the connecting structure 43 is further provided with a second positioning groove 433, and the second positioning groove 433 is provided with a positioning screw 435; the connecting pipe 3 can be inserted into the connecting hole 21 and enter the connecting structure 43 when the locking screw 434 and the positioning screw 435 are not fixed, the positioning screw 435 is used for aligning the first positioning groove 31 and the second positioning groove 433, and the locking screw 434 is used for locking the locking portion 432 to connect the connecting pipe 3.

[0020] Specifically, when it is needed to install the connecting pipe 3 in the rear seat shell 2, it is only needed to loosen the locking screw 434 and the positioning screw 435, at this time, the connecting pipe 3 can be inserted into the connecting hole 21 in any direction, and the first positioning groove 31 and the second positioning groove 433 can be aligned by rotating the connecting pipe 3 or the rear seat shell 2, or by abutting the positioning screw 435 on the second positioning groove 433 by naked eyes, at this time, the positioning screw 435 can be fixed, and at the same time, the locking screw 434 can be fixed on the locking portion 432, the locking portion 432 can be effectively fixed in the body shell, and with the tightening of the locking screw 434, the two sides of the locking groove 431 will be squeezed inward, until the inner wall of the connecting structure 43 completely tightly abuts against the outer wall of the connecting pipe 3, to achieve the locking effect.

[0021] Below will continue to elaborate based on the above embodiments for some preferred / improved embodiments, the following embodiments can be selected, or combined with multiple.

[0022] Referring to Figure 4 As shown, the gearbox 42 is provided with a reduction gear set 421, the reduction gear set 421 is a planetary gear set, planetary gear set compared with conventional transmission reduction gear set 421 can provide higher torque in the same size.

[0023] Specifically, the rear seat shell 2 is provided with a threaded hole for fixing the positioning screw 435 and the locking screw 434, which is arranged to be disassembled and tightened outside the rear seat shell 2.

[0024] As preferred, in order to heat dissipation of motor 41 and controller, prevent the internal temperature is too high, the rear seat shell 2 is provided with a plurality of heat dissipation air duct 22.

[0025] Further, the rear seat shell 2 is provided with a component support 23 for supporting the drive assembly 4. The outer periphery of the connecting structure 43 is provided with a fixed pipe clamp 44, which fixes the drive assembly 4 in the rear seat shell 2 through the screw. The fixed pipe clamp 44 is used to preliminarily fix the drive assembly 4 on the rear seat shell 2, and the support bracket is used to cooperate with the fixed pipe clamp 44 to fix and can reduce the influence of vibration on the drive assembly 4.

[0026] So far, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Those skilled in the art can understand how to implement the technical solutions disclosed herein according to the above description.

[0027] Finally, it should be noted that the above is only the preferred embodiment of the present application, the foregoing embodiments are only used to illustrate the technical solutions of the present application, and not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can understand that the technical solutions described in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A grass trimmer characterized by comprising: The utility model relates to a lawn mower head, a rear seat shell, a connecting pipe and a drive assembly. The rear seat shell is provided with a connecting hole on one side. The connecting pipe is used for connecting the lawn mower head and the rear seat shell. The drive assembly is installed in the rear seat shell. The drive assembly comprises a motor and a gear box. The gear box is installed on the output end of the motor.

2. A grass trimmer according to claim 1, wherein The output end of the gear box is provided with a connecting structure.

3. A grass trimmer according to claim 1, wherein The connecting structure is used for connecting the connecting pipe.

4. A grass trimmer according to claim 1, wherein The connecting structure is provided with a locking slot extending along the axis direction of the connecting structure.

5. The brush cutter of claim 1 wherein, The connecting structure is provided with a locking part and a locking screw on one side of the locking slot.

6. The brush cutter of claim 1 wherein, The connecting structure is also provided with a second positioning slot. The second positioning slot is provided with a positioning screw. The connecting pipe can be inserted into the connecting hole and enter the connecting structure when the locking screw and the positioning screw are not fixed. The positioning screw is used for aligning the first positioning slot and the second positioning slot. The locking screw is used for locking the locking part to connect the connecting pipe. The gear box is provided with a reduction gear set. The reduction gear set is a planetary gear set. The rear seat shell is provided with a threaded hole for fixing the positioning screw and the locking screw. The rear seat shell is provided with several heat dissipation air ducts. The rear seat shell is provided with an assembly support for supporting the drive assembly. The connecting structure is provided with a fixed pipe clamp. The fixed pipe clamp fixes the drive assembly in the interior of the rear seat shell through a screw.

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