Electric starting device for gear of mower

Abstract

The utility model discloses a lawn mower gear electric starting device which comprises a mounting shell and a driving assembly, the driving assembly is independently detachably arranged on the mounting shell, the driving assembly comprises a motor and a driving gear connected with a driving shaft of the motor, the driving gear is located between the mounting shell and the motor, and the motor can drive the driving gear to rotate. The driven gear is meshed with the driving gear and rotationally connected with the mounting shell, the external connection disc is rotationally connected with the mounting shell and limits the driven gear to disengage, and the driven gear can drive the external connection disc to rotate. Compared with the prior art, the utility model has the advantages that the driving component and the driven component in the mounting shell are independently arranged, so that the driving component and the driven component can be independently mounted or dismounted on the mounting shell without distinguishing the mounting sequence, and the conditions of dismounting and remounting are avoided during factory assembly or maintenance; and the working efficiency during factory assembly or maintenance is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, in particular to an electric starting device for a lawn mower, and more particularly to a gear electric starting device for a lawn mower. Background Art

[0002] A lawn mower is a mechanical tool for trimming lawns, vegetation, etc.

[0003] Some lawn mowers, such as the patent with the application number CN201810261092.7, provide an electric starting device for a lawn mower, which includes a starter housing, a motor installed in the starter housing, a gear meshing with the output end of the motor, and a pawl disc for restricting the gear from disengaging from the motor from the starter housing. The output end of the motor drives the pawl disc to rotate through the gear.

[0004] However, the installation of the gear and the motor in the starting device has a sequential order, resulting in that when the starting device is assembled at the factory, the motor must be installed first and then the gear, or when the starting device is damaged and inspected and repaired, the gear must be removed first before the motor can be taken out. This makes it possible for assembly or maintenance personnel who are not familiar with the structure of the starting device to install it out of order, leading to subsequent disassembly and reinstallation, which affects the work efficiency during factory assembly or maintenance. Summary of the Utility Model

[0005] Aiming at the problem that the installation between the driving gear and the motor in the existing lawn mower has a sequential order and is prone to reinstallation, which affects the work efficiency, the technical problem to be solved by the utility model is to provide a gear electric starting device for a lawn mower that can avoid reinstallation and improve work efficiency.

[0006] The technical solution adopted by the utility model to solve the above technical problems is as follows: A gear electric starting device for a lawn mower includes an installation shell, and a driving component and a driven component detachably installed on the installation shell. The driving component and the driven component are independently disassembled and installed on the installation shell;

[0007] The driving component includes a motor and a driving gear. The driving gear is located between the installation shell and the motor, and the motor can drive the driving gear to rotate;

[0008] The driven component includes a driven gear that meshes with the driving gear and is rotatably connected to the installation shell, and an external disk rotatably connected to the installation shell and restricting the driven gear from disengaging. The driven gear can drive the external disk to rotate.

[0009] A further preferred solution of the utility model is that: the driving component includes a fixing frame detachably installed on the installation shell by screws, and the motor is fixed on the fixing frame.

[0010] A further preferred solution of the present utility model is as follows: A transmission housing is installed on the fixing frame, and a planetary gear connected to a connecting motor is installed in the transmission housing. The planetary gear is connected with an output shaft, and the output shaft and the driving gear are driven by a spline structure.

[0011] A further preferred solution of the present utility model is as follows: An arc-shaped avoidance opening is provided on the outer wall of the fixing frame, and the arc-shaped avoidance opening is located above the driven gear.

[0012] A further preferred solution of the present utility model is as follows: A slot is provided on the mounting housing, and a shaft section inserted into the slot is provided on the driving gear. The shaft section and the slot are rotatably installed.

[0013] A further preferred solution of the present utility model is as follows: A screw is threadedly connected to the mounting housing, and the screw restricts the external disk from detaching from the mounting housing.

[0014] A further preferred solution of the present utility model is as follows: A first bearing is sleeved on the screw, and the external disk is connected to the first bearing.

[0015] A further preferred solution of the present utility model is as follows: An installation groove is provided on the driven gear, a coil spring is provided in the installation groove, and the coil spring connects the driven gear and the external disk.

[0016] A further preferred solution of the present utility model is as follows: A spacer for covering the installation groove is fixed on the driven gear, and an outer edge is provided on the external disk above the spacer. The spacer and the outer edge restrict the coil spring from falling out of the installation groove.

[0017] A further preferred solution of the present utility model is as follows: A second bearing is installed on the mounting housing, and the driven gear is connected to the second bearing.

[0018] Compared with the prior art, the advantages of the present utility model are as follows: Through the independent setting of the driving component and the driven component in the mounting housing, the driving component and the driven main machine can be separately installed or disassembled on the mounting housing without distinction of the installation sequence, and the situation of disassembly and reinstallation will not occur during factory assembly or maintenance, effectively improving the working efficiency during factory assembly or maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model will be further described in detail below in conjunction with the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be regarded as limiting the scope of the present utility model. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0020] Figure 1 It is a schematic structural diagram of a preferred embodiment of the present utility model;

[0021] Figure 2 Cross-sectional view of the preferred embodiment of the present utility model;

[0022] Figure 3 Preferred embodiment of the present utility model Figure 2 Enlarged schematic view of A in

[0023] Figure 4 Preferred embodiment of the present utility model Figure 2 Enlarged schematic view of B in

[0024] Figure 5 Preferred embodiment of the present utility model Figure 2 Enlarged schematic view of C in

[0025] Figure 6 Preferred embodiment of the present utility model Figure 2 Enlarged schematic view of D in

[0026] Figure 7 Exploded view of the preferred embodiment of the present utility model;

[0027] Figure 8 Exploded view of the active component in the preferred embodiment of the present utility model excluding the active gear.

[0028] In the figure: 1. Installation shell, 1a. Slot, 1b. Connecting column, 1c. First groove, 1d. Second groove; 01. Active component: 2. Fixed frame, 2a. Arc-shaped avoidance opening; 3. Motor, 3a. Motor housing, 3b. Driving shaft; 4. Transmission housing, 4a. Limiting groove, 4b. First inward flange, 4c. Card slot; 5a. Ring gear, 5a1. Protrusion, 5a2. Second inward flange, 5a3. Through hole, 5b. First sun gear, 5c. First planet carrier, 5d. First planet gear, 5e. Second sun gear, 5f. Second planet carrier, 5g. Second planet gear; 6. Output shaft; 7. Active gear, 7a. Shaft section; 8. Spline shaft; 9. Limiting piece; 02. Driven component: 10. Driven gear, 10a. Lower section, 10b. Platform section, 10c. Installation groove, 10d. Upper section; 11. External connection disk, 11a. Lower connection section, 11b. Inner edge, 11c. Outer edge; 12. Screw; 13. First bearing; 14. Second bearing; 15. Spacer; 16. Coil spring. Specific embodiments

[0029] The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary and should not be construed as limiting the protection scope of the present utility model.

[0030] It should be noted that similar reference numerals represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it may not be further defined and explained in subsequent drawings.

[0031] This embodiment mainly describes a gear electric starting device for a lawn mower that can avoid reinstallation to improve work efficiency, as follows:

[0032] As Figure 1-8 shown, a gear electric starting device for a lawn mower includes an installation shell 1, a driving component 01, and a driven component 02. The driving component 01 and the driven component 02 are independently disassembled and assembled on the installation shell 1, and the driving component 01 and the driven component 02 are detachably installed on the installation shell 1 through screws.

[0033] In this application, through the independent setting of the driving component 01 and the driven component 02 in the installation shell 1, the driving component 01 and the driven main machine can be individually installed or disassembled on the installation shell 1 without distinction in the installation order, and there will be no situation of disassembly and reinstallation during factory assembly or maintenance, effectively improving the work efficiency during factory assembly or maintenance.

[0034] As Figure 2 、 Figure 3 and Figures 6-8 shown, the driving component 01 includes a fixing frame 2 fixed on the installation shell 1, a motor 3 fixed on the fixing frame 2 through screws, a transmission shell 4 located between the fixing frame 2 and the installation shell 1 and fixedly connected to the fixing frame 2, a planetary gear disposed in the transmission shell 4 and drivingly connected to the driving shaft 3b of the motor 3, an output shaft 6 connected to the planetary gear and extending out of the transmission shell 4, a spline shaft 8 mounted on the output shaft 6, and a driving gear 7 disposed between the transmission shell 4 and the installation shell 1 and connecting the spline shaft 8. The output shaft 6 can drive the driving gear 7 to rotate through the spline shaft 8. The motor 3 is provided with a motor housing 3a, and the motor housing 3a is fixedly connected to the fixing frame 2 through screws.

[0035] Preferably, the output shaft 6, the spline shaft 8, and the driving gear 7 are in interference fit, or the fixed connection between the three can be achieved by adding accessories such as screws.

[0036] To avoid the influence of long-term use or thermal expansion and contraction, etc., resulting in the axis deviation of the driving gear 7 during rotation, a slot 1a is provided on the installation shell 1, and a shaft section 7a is provided on the driving gear 7. The shaft section 7a is inserted into the slot 1a, and the shaft section 7a and the slot 1a are rotatably installed, so that when the driving gear 7 rotates, the shaft section 7a is always located in the slot 1a, which can effectively correct the eccentricity of the driving gear 7 during rotation. Preferably, a bearing can be installed in the slot 1a, and the shaft section 7a is connected to the bearing.

[0037] In this embodiment, the planetary gear includes a ring gear 5a axially and limitably mounted in the transmission housing 4, a first sun gear 5b that can be mounted on the drive shaft 3b of the motor 3, a first planet carrier 5c disposed in the ring gear 5a, a plurality of first planet gears 5d that mesh with the first sun gear 5b and are rotatably mounted on the first planet carrier 5c, a second sun gear 5e mounted on the first planet carrier 5c, a second planet carrier 5f disposed in the ring gear 5a, and a plurality of second planet gears 5g that mesh with the second sun gear 5e and are rotatably mounted on the second planet carrier 5f. The output shaft 6 is connected to the second planet carrier 5f. Preferably, the drive shaft 3b of the motor 3 can drive the first sun gear 5b to rotate, the first planet carrier 5c can drive the second sun gear 5e to rotate, and the second planet carrier 5f can drive the output shaft 6 to rotate.

[0038] To prevent the ring gear 5a from rotating in the transmission housing 4, a convex block 5a1 is provided on the outer wall of the ring gear 5a, and a limiting groove 4a for the convex block 5a1 to slide and insert is provided on the inner wall of the transmission housing 4. When the convex block 5a1 is inserted into the limiting groove 4a, the relative rotation between the ring gear 5a and the transmission housing 4 is restricted.

[0039] Meanwhile, to prevent the ring gear 5a from falling out of the transmission housing 4, a first inward flange 4b is provided at one end of the transmission housing 4, and the ring gear 5a abuts against the first inward flange 4b. The limiting groove 4a communicates with the other end of the transmission housing 4. An inward flange 5a2 is provided on the end face of the ring gear 5a that abuts against the first inward flange 4b to restrict the second planet carrier 5f from disengaging from one end of the transmission housing 4. A through hole 5a3 is formed at the center of the inward flange 5a2, and the output shaft 6 connected to the second planet carrier 5f passes through the through hole 5a3.

[0040] A clamping groove 4c is provided on the inner wall of the transmission housing 4 away from the first inward flange 4b, and a limiting piece 9 is clamped and installed at the clamping groove 4c. The drive end of the motor 3 can pass through the limiting piece 9 and insert into the ring gear 5a. When the transmission housing 4 is fixed on the fixing bracket 2, the fixing bracket 2 seals the other end of the transmission housing 4 to restrict the limiting piece 9 and the ring gear 5a from falling out of the transmission housing 4, and the limiting piece 9 and the first inward flange 4b restrict the first planet gears 5d, the first planet carrier 5c, the second sun gear 5e, the second planet gears 5g, and the second planet carrier 5f from falling out of the ring gear 5a.

[0041] As Figure 2 and Figures 4-6 shown, the driven assembly 02 includes a driven gear 10 and an external disk 11. Both the driven gear 10 and the external disk 11 are rotatably mounted on the mounting housing 1, and the driven gear 10 meshes with the driving gear 7. The driven gear 10 is located between the mounting housing 1 and the external disk 11. A screw 12 is threadedly connected to the mounting housing 1, and the screw 12 restricts the external disk 11 from disengaging from the driven gear 10 and the mounting housing 1.

[0042] An arc-shaped avoidance opening 2a is provided on the outer wall of the fixing bracket 2. The arc-shaped avoidance opening 2a is located above the driven gear 10 or above the outer ring. The setting of the arc-shaped avoidance opening 2a enables the part of the driven gear 10 that meshes with the driving gear 7 to be directly taken out of the mounting shell 1 without touching the motor 3 when the driven gear 10 of the driven assembly 02 is detached from the mounting shell 1. This allows the installation of the driven gear 10 and the driving gear 7, that is, the motor 3, on the mounting shell 1 without a specific order, effectively avoiding reinstallation caused by incorrect installation order.

[0043] A connecting column 1b is provided in the mounting shell 1, and a first groove 1c is recessed at the end of the connecting column 1b. The driven gear 10 and the external disk 11 are both rotatably mounted on the connecting column 1b. To prevent the driven gear 10 and the external disk 11 from wearing the mounting shell 1 during rotation, a first bearing 13 is provided in the first groove 1c. The external disk 11 is sleeved outside the second bearing 14, and the second bearing 14 is sleeved on the connecting column 1b. The driven gear 10 is connected to the second bearing 14. In this embodiment, a second groove 1d is provided on the mounting shell 1, and the connecting column 1b protrudes from the bottom of the second groove 1d. The screw 12 is inserted into the external disk 11 and the first bearing 13 and is threadedly connected to the connecting column 1b. The screw 12 restricts the first bearing 13, the external disk 11, the driven gear 10, and the second bearing 14 from detaching through a nut or a gasket sleeved on the screw rod.

[0044] As Figure 2 and Figures 4-6 shown, a lower section 10a connecting the second bearing 14 is provided below the driven gear 10, and a stepped stage 10b is abutted against the end face of the second bearing 14. An installation groove 10c with an upper opening is provided on the driven gear 10, and an upper section 10d is provided at the bottom of the installation groove 10c. The upper section 10d, the stepped stage 10b, and the lower section 10a are sleeved on the connecting column 1b.

[0045] An inner edge 11b located on the outer ring of the first bearing 13 is provided on the external disk 11. The nut of the screw 12 or the gasket sleeved on the screw rod of the screw 12 is attached to the upper end face of the inner edge 11b. A lower connecting section 11a that is inserted into the installation groove 10c of the driven gear 10 and sleeved outside the upper section 10d is provided on the external disk 11. A coil spring 16 is connected between the outer wall of the lower connecting section 11a and the groove wall of the installation groove 10c. The driven gear 10 can drive the external disk 11 to rotate through the coil spring 16.

[0046] To prevent the coil spring 16 from being forced out of the installation groove 10c, a spacer 15 is fixed to the driven gear 10 by screws. The spacer 15 partially covers the upper opening of the installation groove 10c, and an outer edge 11c is provided on the external disk 11. The outer edge 11c is located above the spacer 15. The spacer 15 and the outer edge 11c can restrict the coil spring 16 from falling out of the installation groove 10c.

[0047] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0048] The above has introduced in detail a gear electric starting device for a lawn mower provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the present utility model and its core idea. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A lawn mower gear electric starting device, characterized in that: It includes a mounting shell, and an active component and a driven component detachably mounted on the mounting shell, wherein the active component and the driven component are independently detachably mounted on the mounting shell; The active component includes a motor and a driving gear, wherein the driving gear is located between the mounting shell and the motor, and the motor can drive the driving gear to rotate; The driven assembly comprises a driven gear meshing with the driving gear and rotatably connected to the mounting shell, and an external plate rotatably connected to the mounting shell and limiting the separation of the driven gear, wherein the driven gear can drive the external plate to rotate.

2. A lawn mower gear electric starting device according to claim 1, characterized in that: The active component comprises a fixing frame which is detachably mounted on the mounting shell by screws, and the motor is fixed on the fixing frame.

3. A lawn mower gear electric starting device according to claim 2, characterized in that: A transmission housing is installed on the fixing frame, and a planetary gear connected to the motor is installed in the transmission housing. The planetary gear is connected to an output shaft, and the output shaft and the driving gear are transmitted through a spline structure.

4. A lawn mower gear electric starting device according to claim 2, characterized in that: An arc-shaped avoidance opening is arranged on the outer wall of the fixing frame, and the arc-shaped avoidance opening is located above the driven gear.

5. The lawn mower gear electric starting device according to claim 1, characterized in that: The installation shell is provided with a slot, the driving gear is provided with a shaft section inserted into the slot, and the shaft section is rotatably installed with the slot.

6. A lawn mower gear electric starting device according to claim 1, characterized in that: The mounting shell is threadedly connected with a screw, and the screw limits the external plate from being separated from the mounting shell.

7. A lawn mower gear electric starting device according to claim 6, characterized in that: A first bearing is sleeved on the screw, and the external plate is connected to the first bearing.

8. The lawn mower gear electric starting device according to claim 1, characterized in that: The driven gear is provided with a mounting groove, a coil spring is provided in the mounting groove, and the coil spring connects the driven gear and the external disk.

9. A lawn mower gear electric starting device according to claim 8, characterized in that: A spacer covering the mounting groove is fixed on the driven gear, and an outer edge located above the spacer is provided on the external plate, and the spacer and the outer edge restrict the coil spring from falling off the mounting groove.

10. The lawn mower gear electric starting device according to claim 1, characterized in that: A second bearing is mounted on the mounting shell, and the driven gear is connected to the second bearing.

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