Motor assembly facilitating rapid installation of external transmission shaft

Abstract

The utility model relates to the technical field of motor design, and discloses a motor assembly facilitating rapid installation of an external transmission shaft, which comprises a motor main body and a transmission shaft positioned at the output end of the motor main body, the outer side of the transmission shaft is rotatably connected with a shaft tube, and the output end of the motor main body is provided with a butt joint pipe for embedding one end of the shaft tube. A transmission piece used for connecting the output shaft of the motor body with the end of the transmission shaft is arranged in the butt joint pipe, and a connecting piece used for detachably connecting the end of the shaft pipe into the butt joint pipe is arranged on the butt joint pipe. The end portion of the shaft tube is detachably connected in the butt joint tube through the connecting piece, at the moment, detachable connection of the shaft tube in the butt joint tube can be achieved, the transmission shaft can be conveniently disassembled and assembled by pulling and inserting the end portion of the shaft tube in the butt joint tube, and therefore the tool bit assembly where the transmission shaft is located can be conveniently replaced. The cutter heads in different forms are used for being matched with diversified lawn trimming.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor design technical field, especially relate to a motor assembly convenient for quick installation of external transmission shaft. BACKGROUND

[0002] The lawn mower is all handheld tools for cutting weeds in lawn, garden, pasture and other places. According to power source, it can be divided into oil-driven and electric type.

[0003] At present, the Chinese patent with publication number CN221863624U and publication date of October 22, 2024 discloses a transmission assembly and lawn mower, the transmission assembly includes a motor body and a rotating shaft assembly connected with the motor body, the rotating shaft assembly includes a connecting end for connecting with an external structure, the transmission assembly further includes a transmission part in plug-in cooperation with the connecting end, the transmission part is internally provided with a first positioning part and a second positioning part, and the connecting end is correspondingly provided with a first connecting part and a second connecting part, when the connecting end is inserted into the transmission part, the first connecting part and the first positioning part are in mutual cooperation, and the second connecting part and the second positioning part are in mutual cooperation, so that the connecting end and the transmission part are fixedly connected.

[0004] The motor of the transmission assembly and lawn mower utilizes the transmission part and the rotating shaft assembly to butt joint the cutter head, but the cutter head of the transmission assembly and lawn mower is very troublesome to replace, so it is not possible to quickly replace the cutter head to match diversified lawn trimming, and ultimately it is not conducive to the use of different cutter heads. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a motor assembly convenient for quick installation of external transmission shaft, which can facilitate the convenient disassembly and assembly of the transmission shaft.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a motor assembly convenient for quick installation of external transmission shaft, comprising a motor body, a transmission shaft located at the output end position of the motor body, a shaft pipe rotatably connected to the outside of the transmission shaft, a butt joint pipe provided on the output end of the motor body and embedded with one end of the shaft pipe, a transmission part provided in the butt joint pipe and used for connecting the output shaft of the motor body with the end part of the transmission shaft, and a connecting part provided on the butt joint pipe and used for detachably connecting the end part of the shaft pipe in the butt joint pipe.

[0007] The utility model is further provided as follows: the transmission part comprises a driving gear provided on the output shaft of the motor body, a spline sleeve rotatably connected in the butt joint pipe and extending to the upper side of the driving gear at one end, a driven gear key-connected at the end part of the spline sleeve and meshed with the driving gear, and a spline shaft provided at one end of the transmission shaft and used for being plugged into the spline sleeve.

[0008] The further setting of the utility model discloses: the side of the butt joint pipe far from the motor main body one end is provided with the long slot of the extension direction parallel with the butt joint pipe extension direction, the first connecting plate is provided with the first through -hole, the second connecting plate is provided with the second through -hole, the end of the second through -hole is provided with the nut groove, the nut groove is embedded with the connecting nut, the butt joint pipe end is provided with the threaded shaft that is connected in the connecting nut after passing through the first through -hole and the second through -hole, the threaded shaft far from the connecting nut one end place is also provided with the knob.

[0009] The further setting of the utility model discloses: the connecting piece includes the swing arm of setting on the butt joint pipe, the swing shaft of setting at both sides position in the middle part of swing arm, the connecting lug of setting on the upper side of butt joint pipe and being located at the swing shaft position, the shaft slot of setting on the connecting lug and being embedded for swing shaft, the pressing block of setting at one end of swing arm, the reset spring of one end with the lower side of pressing block and the other end with the upper side of butt joint pipe, the positioning hook of setting at the one end of swing arm far from pressing block, the first hook hole of setting on the butt joint pipe and being passed for positioning hook, the second hook hole of setting on the shaft pipe and being passed for positioning hook.

[0010] The further setting of the utility model discloses: the upper side of butt joint pipe is provided with the positioning platform that is inserted into reset spring.

[0011] Summarized above, the utility model has following beneficial effect:

[0012] 1. First, the shaft tube one end on the transmission shaft is embedded in the butt joint pipe, the transmission shaft end can enter the butt joint pipe along with the shaft tube, then the motor main body output shaft is connected with the transmission shaft end by using the transmission part, so that the motor main body drives the transmission shaft to rotate, wherein the shaft tube end is detachably connected in the butt joint pipe by using the connecting piece, at this moment, the detachable connection of the shaft tube in the butt joint pipe can be realized, and the transmission shaft can be conveniently disassembled by pulling out the shaft tube end in the butt joint pipe, so that the cutter head assembly where the transmission shaft is located can be conveniently replaced, so that different forms of cutter heads can be matched with diversified lawn mowing;

[0013] 2. When the shaft tube is inserted into the butt joint pipe, the spline shaft of the transmission shaft end can be embedded in the spline sleeve, and when the motor main body starts, the motor main body can drive the driving gear to rotate, the driving gear can drive the spline sleeve to rotate through the driven gear, and finally the transmission shaft can be driven to rotate;

[0014] 3. When the end of the shaft pipe is embedded in the butt joint pipe, the threaded shaft is rotated by the knob, and the first connecting plate and the second connecting plate are offset towards each other due to the embedding of the connecting nut in the nut groove, so that the butt joint pipe is clamped at the end of the long slot, thereby facilitating the stable insertion of the shaft pipe end in the butt joint pipe;

[0015] 4. When the end of the shaft pipe needs to be embedded in the butt joint pipe, the pressing block is first pressed down, so that the reset spring is compressed and the positioning hook swings upward, then the shaft pipe is smoothly embedded in the butt joint pipe, and the pressing block is released, at this time the positioning hook can be positioned in the shaft pipe end in the butt joint pipe under the elastic restoring force of the reset spring; when the shaft pipe needs to be disassembled, the pressing block is pressed down again to make the positioning hook disengage from the first hook hole and the second hook hole, and the shaft pipe in the butt joint pipe can be pulled out; finally, the detachable connection of the shaft pipe in the butt joint pipe can be realized;

[0016] 5. The butt joint pipe penetrates into the reset spring through the positioning table, so as to position the position of the reset spring. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present 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 present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 is the structural explosion diagram of the present application;

[0019] Figure 2 is a partial enlarged view of the connection relationship between the motor body, the transmission shaft and the transmission member in the present application;

[0020] Figure 3 is a partial explosion view of the connection relationship between the butt joint pipe and the threaded shaft in the present application;

[0021] Figure 4 is a partial sectional view of the connection relationship between the motor body, the butt joint pipe and the connecting member in the present application;

[0022] Figure 5 is a structural schematic view of the present application combined with a variety of tool head assemblies.

[0023] In the figure, 1, motor main body; 2, transmission shaft; 21, shaft tube; 3, butt joint pipe; 31, long slot; 32, first connecting plate; 321, first through hole; 33, second connecting plate; 331, second through hole; 332, nut groove; 333, connecting nut; 34, threaded shaft; 341, knob; 35, positioning table; 4, transmission part; 41, driving gear; 42, spline sleeve; 43, driven gear; 44, spline shaft; 5, connecting part; 51, swing arm; 52, swing shaft; 53, connecting lug; 54, shaft slot; 55, pressing block; 56, return spring; 57, positioning hook; 58, first hook hole; 59, second hook hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] A motor assembly facilitating rapid installation of an externally connected transmission shaft, referring to Figure 1 、 Figure 2 The motor assembly facilitating rapid installation of an externally connected transmission shaft comprises a motor main body 1 and a transmission shaft 2 located at the output end position of the motor main body 1, wherein the outer side of the transmission shaft 2 is rotatably connected with a shaft tube 21 through a bearing, and the output end of the motor main body 1 is fixed with a butt joint pipe 3 for embedding one end of the shaft tube 21 through bolts, and the butt joint pipe 3 is provided with a transmission part 4 for connecting the output shaft of the motor main body 1 with the end of the transmission shaft 2, wherein the transmission part 4 comprises a driving gear 41, a spline sleeve 42, a driven gear 43 and a spline shaft 44, wherein the driving gear 41 is keyed on the output shaft of the motor main body 1, the spline sleeve 42 is rotatably connected in the butt joint pipe 3 and extends to the upper side of the driving gear 41 at one end, the driven gear 43 is keyed at the end of the spline sleeve 42 and engages with the driving gear 41, and the spline shaft 44 is integrally provided at one end of the transmission shaft 2 and is inserted into the spline sleeve 42.

[0026] Referring to Figure 1 、 Figure 3The side of the butt joint pipe 3 away from the motor body 1 is also provided with a long slot 31 extending in parallel with the butt joint pipe 3, and the end of the butt joint pipe 3 is integrally provided with a first connecting plate 32 on one side of the long slot 31, and a second connecting plate 33 on the other side of the long slot 31, and the first connecting plate 32 is provided with a first through hole 321, and the second connecting plate 33 is provided with a second through hole 331, and the end of the second through hole 331 is provided with a nut slot 332, and the nut slot 332 is embedded with a connecting nut 333, and the end of the butt joint pipe 3 is provided with a threaded shaft 34 screwed into the connecting nut 333, and the end of the threaded shaft 34 away from the connecting nut 333 is fixed with a knob 341.

[0027] Referring to Figure 1 , Figure 4 The butt joint pipe 3 is also provided with a connecting piece 5 for detachably connecting the end of the shaft pipe 21 in the butt joint pipe 3, which comprises a swing arm 51, a swing shaft 52, a connecting lug 53, a shaft slot 54, a pressing block 55, a reset spring 56, a positioning hook 57, a first hook hole 58, and a second hook hole 59, wherein the swing arm 51 is provided on the upper side of the butt joint pipe 3, the swing shaft 52 is integrally provided on both sides of the middle part of the swing arm 51, the connecting lug 53 is integrally provided on the upper side of the butt joint pipe 3 at the position of the swing shaft 52, and the shaft slot 54 is provided on the connecting lug 53 for embedding the swing shaft 52, wherein the pressing block 55 is integrally provided at one end of the swing arm 51, the reset spring 56 is abutted on the lower side of the pressing block 55 at one end and on the upper side of the butt joint pipe 3 at the other end, and the upper side of the butt joint pipe 3 is integrally provided with a positioning table 35 penetrating into the reset spring 56, wherein the positioning hook 57 is integrally provided at the end of the swing arm 51 away from the pressing block 55, the first hook hole 58 is provided on the butt joint pipe 3 for the positioning hook 57 to pass through, and the second hook hole 59 is provided on the shaft pipe 21 for the positioning hook 57 to pass through.

[0028] Principle: First, the end of the shaft pipe 21 on the transmission shaft 2 is embedded in the butt joint pipe 3, the end of the transmission shaft 2 enters the butt joint pipe 3 together with the shaft pipe 21, then the spline shaft 44 at the end of the transmission shaft 2 is embedded in the spline sleeve 42, and the threaded shaft 34 is rotated by the knob 341, because the connecting nut 333 is embedded in the nut slot 332, the first connecting plate 32 and the second connecting plate 33 are offset towards each other at this time, and finally the end of the second connecting pipe is clamped after the end of the butt joint pipe 3 is shrunk in the long slot 31; then the motor body 1 is started, the motor body 1 drives the driving gear 41 to rotate, the driving gear 41 drives the spline sleeve 42 to rotate through the driven gear 43, and finally the transmission shaft 2 is driven to rotate;

[0029] When the end of the shaft pipe 21 needs to be embedded in the butt joint pipe 3, the pressing block 55 is first pressed down, so that the reset spring 56 is compressed and the positioning hook 57 swings upward, then the shaft pipe 21 can be smoothly embedded in the butt joint pipe 3, and the pressing block 55 is released, at this time, under the elastic restoring force of the reset spring 56, the positioning hook 57 can pass through the first hook hole 58 and then enter the second hook hole 59, at this time, the end of the shaft pipe 21 in the butt joint pipe 3 can be positioned by the positioning hook 57; when the shaft pipe 21 needs to be disassembled, the pressing block 55 is pressed down again, so that the positioning hook 57 is separated from the first hook hole 58 and the second hook hole 59, and the shaft pipe 21 in the butt joint pipe 3 can be pulled out; finally, the detachable connection of the shaft pipe 21 in the butt joint pipe 3 can be realized.

Claims

1. A motor assembly facilitating quick installation of an externally geared drive shaft, comprising a motor body (1), a drive shaft (2) located at the output end position of the motor body (1), characterized in that: The transmission shaft (2) is rotatably connected with a shaft tube (21), the output end of the motor body (1) is provided with a butt joint pipe (3) for embedding one end of the shaft tube (21), the butt joint pipe (3) is provided with a transmission part (4) for connecting the output shaft of the motor body (1) with the end of the transmission shaft (2), and the butt joint pipe (3) is provided with a connecting part (5) for detachably connecting the end of the shaft tube (21) in the butt joint pipe (3).

2. A motor assembly for facilitating quick installation of an externally geared propeller shaft as claimed in claim 1, wherein: The transmission part (4) comprises a driving gear (41) arranged on the output shaft of the motor body (1), a spline sleeve (42) rotatably connected in the butt joint pipe (3) and extending to the upper side of the driving gear (41), a driven gear (43) key-connected at the end of the spline sleeve (42) and meshing with the driving gear (41), and a spline shaft (44) arranged at one end of the transmission shaft (2) and inserted into the spline sleeve (42).

3. A motor assembly for facilitating quick installation of an externally geared propeller shaft as claimed in claim 1, wherein: The butt joint pipe (3) is provided with a long slot (31) extending in parallel with the extending direction of the butt joint pipe (3) at the side away from the end of the motor body (1), a first connecting plate (32) is arranged at the end of the butt joint pipe (3) and on one side of the long slot (31), a second connecting plate (33) is arranged at the end of the butt joint pipe (3) and on the other side of the long slot (31), a first through hole (321) is arranged on the first connecting plate (32), a second through hole (331) is arranged on the second connecting plate (33), a nut groove (332) is arranged at the end of the second through hole (331), a connecting nut (333) is embedded in the nut groove (332), a threaded shaft (34) is arranged at the end of the butt joint pipe (3) and threadedly connected in the connecting nut (333) through the first through hole (321) and the second through hole (331), and a knob (341) is further arranged at the end of the threaded shaft (34) away from the connecting nut (333).

4. The motor assembly of claim 1, wherein: The connecting part (5) comprises a swing arm (51) arranged on the upper side of the butt joint pipe (3), swing shafts (52) arranged at both sides of the middle part of the swing arm (51), connecting ears (53) arranged on the upper side of the butt joint pipe (3) and located at the positions of the swing shafts (52), shaft grooves (54) arranged on the connecting ears (53) and embedded with the swing shafts (52), pressing blocks (55) arranged at one end of the swing arm (51), return springs (56) abutting against the lower side of the pressing blocks (55) at one end and abutting against the upper side of the butt joint pipe (3) at the other end, positioning hooks (57) arranged at the end of the swing arm (51) away from the pressing blocks (55), first hook holes (58) arranged on the butt joint pipe (3) and passed through by the positioning hooks (57), and second hook holes (59) arranged on the shaft tube (21) and passed through by the positioning hooks (57).

5. A motor assembly for facilitating quick installation of an externally geared propeller shaft as claimed in claim 4 wherein: The upper side of the butt joint pipe (3) is provided with a positioning table (35) penetrating into the return spring (56).

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