CN110679275A

CN110679275A - Handheld mower

Info

Publication number: CN110679275A
Application number: CN201911055106.0A
Authority: CN
Inventors: 张鑫
Original assignee: Hangzhou Yilanyong Road Landscape Design Co Ltd
Current assignee: Hangzhou Yilanyong Road Landscape Design Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-01-14

Abstract

The invention discloses a handheld mower which structurally comprises an upper cover body, a lower cover body, wheels, a height adjusting mechanism, a grass mowing mechanism, a driving device, a spherical rotating part, a driving device, an upper connecting rod and a lower connecting rod, wherein the lower cover body is arranged below the upper cover body, the wheels are arranged on the lower cover body, the height adjusting mechanism is connected with the upper cover body and the lower cover body, the grass mowing mechanism is arranged inside the lower cover body, the driving device is connected with the grass mowing mechanism, the spherical rotating part is arranged above the upper cover body, the spherical rotating part is rotatably connected with the lower connecting rod, and the upper end of the lower connecting rod is provided with the upper connecting rod. The angle of the relative lower connecting rod of steerable globular rotating part, wheel when supporting hand-held mower weight, cooperation rotary part provide the strong point and accomplish the action of deflecting, moreover under wheel, rotary part and height adjusting mechanism's effect, the head of beating grass remains parallel and can control the height between head of beating grass and the ground all the time.

Description

Handheld mower

Technical Field

The invention belongs to the field of landscaping, relates to a lawn trimming device, and particularly relates to a handheld mower.

Background

The lawn mower mainly cuts grass by rotating a blade at a high speed by using power of a driving device. Traditional hand-held type lawn mower at the during operation, needs operating personnel to get to hold constantly to keep certain height with ground, increased work burden. For this reason, long-term research has been conducted, and various solutions have been proposed.

For example, chinese patent literature discloses a handheld adjustable lawn mower [ application No.: CN201810095028.6], comprising a working head, a connecting rod, an operating handle, a driving device and a grass cutting device, especially, further comprising an adjustable auxiliary wheel device outside the lower end of the connecting rod and at a certain distance from the working head, wherein the adjustable auxiliary wheel device is composed of a hollow supporting rod with a top end hinged with the outside of the connecting rod, a T-shaped connecting rod passing through the lower end of the hollow supporting rod and extending into the inner wall of the hollow supporting rod, a wheel carrier arranged on both sides of the lower end of the T-shaped connecting rod, and universal wheels arranged at the lower end of the wheel carrier. The invention is very safe when in use, and the user can conveniently operate by relying on the support of the adjustable auxiliary wheel device, simultaneously the burden of the handheld mower is lightened, and the purposes of portability and practicability are met to a greater extent.

Above-mentioned scheme still need divide partial force to control the distance and the angle between grass cutting device and the ground constantly, and long-time use produces tiredly easily, has improved user of service's intensity of labour.

Disclosure of Invention

The invention aims to solve the problems and provides a handheld mower which can adjust the angle of a grass mowing mechanism relative to a connecting rod and adjust wheels with adjustable height, so that the labor intensity of users is reduced.

In order to achieve the purpose, the invention adopts the following technical scheme: this hand-held type lawn mower includes the upper cover body, upper cover body below is equipped with the lower cover body that the components of a whole that can function independently set up, evenly distributed has a plurality of wheels on the lower cover body, the upper cover body with the lower cover body is connected through height adjusting mechanism, the internal grass mowing mechanism that is equipped with of lower cover, grass mowing mechanism front end the lower cover body with be equipped with open opening on the upper cover body, grass mowing mechanism be connected with drive arrangement, the upper cover body on be equipped with globular rotating part, globular rotating part and lower connecting rod rotatable coupling, lower connecting rod upper end be equipped with telescopic upper connecting rod, lower connecting rod with upper connecting rod cup joint, and can be relative the upper connecting pipe makes the flexible displacement of straight line.

The invention creatively designs the rotatable connection between the spherical rotating part and the lower connecting rod, so that the angle of the rotating part relative to the lower connecting rod can be controlled, and the invention can adapt to the frequent change of the lawn slope. The lower cover body is uniformly provided with a plurality of wheels, the wheels support the weight of the handheld mower and are matched with the rotating part to provide a supporting point to complete deflection, and under the action of the wheels, the rotating part and the height adjusting mechanism, the grass mowing head is always parallel to the ground and can control the height between the grass mowing head and the ground, so that the handheld mower does not need to be lifted when in use, and the arm is still kept in the most comfortable posture when the gradient of the lawn changes frequently.

In the above-mentioned handheld mower, the end of the lower connecting rod is provided with a semi-open spherical sleeve, the upper end of the spherical rotating part is a sphere, the lower end of the spherical rotating part is a transmission cavity, the spherical sleeve is arranged outside the sphere, the spherical sleeve is in transition fit with the sphere, and two contact surfaces of the spherical sleeve and the sphere are smooth surfaces. So that it does not deflect due to the influence of gravity on the rotating part and other parts of the lower end.

In the above-mentioned hand-held mower, the upper end of the upper cover body is provided with the motor box which is horizontally arranged, the motor box is internally provided with the motor which is horizontally arranged, the motor is horizontally arranged to lower the gravity center of the hand-held mower, the stability of the device can be improved, the motor is provided with an output shaft, the output shaft extends into the transmission cavity, the output shaft is rotatably connected with the transmission cavity through a bearing I, the other end of the output shaft is connected with an output bevel gear, the output bevel gear is meshed with the transmission bevel gear, a gasket is arranged below the transmission bevel gear and is arranged at the upper end of the upper cover body, the transmission bevel gear is connected with a transmission shaft, transmission threads are carved at the lower end of the transmission shaft, the transmission shaft penetrates through the gasket and the upper end of the upper cover body and extends out of the transmission cavity, and the transmission shaft is rotatably connected with the upper cover body through a second bearing.

In the handheld mower, the left side of the lower cover body is provided with the left side wheel, the right side of the lower cover body is provided with the right side wheel, the rear side of the lower cover body is provided with the rear side wheel which is fixed by bolts and nuts, and the bottom ends of the wheels are higher than the bottom end of the lower cover body.

In the above-mentioned handheld mower, the upper end of the height adjusting mechanism is a knob, the lower end of the knob is connected with an adjusting rod, the upper end of the adjusting rod is a smooth section, the lower end of the adjusting rod is a threaded section, the smooth section passes through the upper cover body and then is connected with the lower cover body through the threaded section, the smooth section is rotatably connected with the upper cover body through a bearing III and a bearing IV, the lower cover body is provided with a threaded hole corresponding to the threaded section, and the knob can be rotated to control the distance between the lower cover body screwed on the threaded section and the upper cover body, so that the height of the grass mowing mechanism from the ground is adjusted, and the stubble remaining height of a lawn is controlled.

In foretell hand-held type lawn mower, the transmission shaft end is equipped with the head of beating the grass, the head both ends of beating the grass are equipped with a plurality of ropes of beating the grass, transmission shaft lower extreme middle section position is equipped with rotatory tool bit, rotatory tool bit closes soon through the screw thread and is fixed in on the transmission shaft with the nut gasket, rotatory tool bit is equipped with four evenly distributed's trapezoidal blade, trapezoidal blade head slope 30 is located rotatory tool bit surface, trapezoidal blade is located the top of beating the grass rope. The inclined blade design of the rotary cutter head can improve the mowing effect and carry out secondary cutting on grass clippings.

In the handheld mower, the interior of the upper connecting rod is of a hollow structure, the lower end of the upper connecting rod is carved with a first thread, the lower end of the first thread is provided with a plurality of elastic locking sheets which are uniformly distributed, the lower connecting rod passes through the elastic locking sheets and then penetrates into the connecting rod, and a connecting pipe knob matched with the elastic locking sheet is arranged at the joint of the upper connecting rod and the lower connecting rod, a second thread matched with the first thread is carved in the connecting pipe knob, the inner diameter of the connecting pipe knob at the part below the second thread is gradually reduced, the minimum inner diameter of the upper end of the connecting pipe knob is slightly larger than the outer diameter of the upper connecting rod, the minimum inner diameter of the lower end of the connecting pipe knob is slightly larger than the outer diameter of the lower connecting pipe, the connecting pipe knob can adjust the relative position between the upper connecting rod and the lower connecting rod.

Compared with the prior art, the invention has the advantages that:

1. the angle between the lower connecting rod and the grass mowing mechanism can be quickly adjusted according to the change of the gradient of the lawn, so that the grass mowing head is parallel to the ground all the time, the blade cannot collide with the slope, the practicability of the grass mowing machine is improved, the height of stubble on the slope lawn can be conveniently controlled, the telescopic upper connecting rod can be automatically adjusted according to actual conditions, and the comfort level in the using process is improved.

2. The center of gravity of the grass mowing mechanism is arranged above the blade, so that the center of gravity of the grass mowing mechanism is convenient to stabilize under the condition that the gradient of the lawn frequently changes, good stability is kept, extra physical power consumption of users due to the fact that the center of gravity is maintained is avoided, and labor intensity is reduced.

3. The wheel support of bottom has reduced the weight burden of traditional hand-held mower, and the removal ability when not influencing operating condition simultaneously can adjust the distance between the head of beating the grass and the ground through control wheel height, can easily control the lawn and stay the stubble height, adapts to the demand that different lawns stayed the stubble height.

4. The trapezoidal blade of slope can produce updraft, makes weeds be vertical ascending state to improve the effect of mowing, and carry out the secondary cutting to the grass bits, make the grass bits can produce fertilization effect more effectively.

Drawings

Fig. 1 is a schematic partial cross-sectional view of a handheld mower provided by the present invention.

FIG. 2 is a half-sectional view of the main components of the handheld lawnmower provided by the present invention.

Fig. 3 is a top view of the main components of the handheld mower provided by the present invention.

FIG. 4 is a partial cross-sectional view of a handheld mower height adjustment mechanism provided in accordance with the present invention in use.

FIG. 5 is a partial cross-sectional view of a connection location of a handheld mower connection tube provided by the present invention.

FIG. 6 is a front view of a rotary cutter head and a trapezoidal blade of a handheld lawnmower provided in accordance with the present invention.

FIG. 7 is a top view of a rotary cutter head and trapezoidal blade of a handheld lawnmower provided in accordance with the present invention.

In the figure, 10, open opening; 20. a spherical rotating portion; 21. a sphere; 22. a transmission cavity; 30. a grass mowing mechanism 40 and a driving device; 50. a height adjustment mechanism; 51. a knob; 52. adjusting a rod; 53. a smooth section; 54. a threaded end; 60. a wheel; 61. a left side wheel; 62. a right side wheel; 63. a rear side wheel; 91. a first bearing; 92. a second bearing; 93. a third bearing; 94. a bearing IV; 100. a connecting rod; 101. an upper connecting rod; 101a, an elastic locking sheet; 101b, a first thread; 102. a connecting pipe knob; 102b, a second thread; 103. a lower connecting rod; 103a, a spherical sleeve; 105. An upper cover body; 106. a lower cover body; 106a, a threaded hole; 110. a motor case; 110a, a motor; 111. an output shaft; 112. an output bevel gear; 113. a drive bevel gear; 114. a gasket; 115. a drive shaft; 151. Rotating the cutter head; 151a, trapezoidal blades; 155. Grass cutting head; 156. and (5) beating the grass rope.

Detailed Description

As shown in fig. 1 and 2, the handheld mower of the present invention includes an upper housing 105, a lower housing 106 disposed separately below the upper housing 105, a plurality of wheels 60 are uniformly distributed on the lower housing 106, the upper housing 105 and the lower housing 106 are connected by a height adjustment mechanism 50, a grass mowing mechanism 30 is disposed in the lower housing 106, an open opening 10 is disposed on the lower housing 106 and the upper housing 105 at the front end of the grass mowing mechanism 30, the open opening 10 is 140 °, the grass mowing mechanism 30 is connected to a driving device 40, a spherical rotating portion 20 is disposed on the upper housing 105, the spherical rotating portion 20 is rotatably connected to a lower connecting rod 103, a telescopic upper connecting rod 101 is disposed at the upper end of the lower connecting rod 103, and the lower connecting rod 103 is sleeved with the upper connecting rod 101 and can linearly and telescopically displace relative to the upper connecting rod 101.

As shown in fig. 1 and 5, the interior of the upper connecting rod 101 is hollow, the upper end of the upper connecting rod 101 is provided with a handle, the lower end of the upper connecting rod 101 is carved with a first thread 101b, the lower end of the first thread 101b is provided with a plurality of elastic locking sheets 101a which are uniformly distributed, the lower connecting rod 103 penetrates into the upper connecting rod 101 after passing through the elastic locking sheets 101a, a connecting pipe knob 102 matched with the elastic locking sheets 101a is arranged at the joint of the upper connecting rod 101 and the lower connecting rod 103, a second thread 102b matched with the first thread 101b is carved in the connecting pipe knob 102, the inner diameter below the second thread 102b is gradually reduced, the minimum inner diameter at the upper end of the connecting pipe knob 102 is slightly larger than the outer diameter of the upper connecting rod 101, the minimum inner diameter at the lower end of the connecting pipe knob 102 is slightly larger than the outer diameter of the lower connecting pipe 103, when the connecting pipe knob 102 is screwed, the elastic locking piece 102a clamps the lower connection pipe 103 to fix the relative position between the upper connection pipe 101 and the lower connection pipe 103, and when the connection pipe knob 102 is unscrewed downward, the first thread 101b and the second thread 102b are separated, and the lower connection rod 103 can linearly and telescopically displace with respect to the upper connection pipe 101. The angle between the lower connecting rod 103 and the grass mowing mechanism 30 can be quickly adjusted according to the change of the lawn slope, so that the grass mowing head 155 is always parallel to the ground, the blade cannot collide with the slope, the practicability of the invention is improved, the height of the stubble on the slope lawn can be conveniently controlled, and the telescopic upper connecting rod 101 can be automatically adjusted according to the actual situation, so that the comfort level in the using process is improved.

The tail end of the lower connecting rod 103 is provided with a semi-open spherical sleeve 103a, the upper end of the spherical rotating part 20 is a sphere 21, the lower end of the spherical rotating part 20 is a transmission cavity 22, the spherical sleeve 103a is sleeved outside the sphere 21, the spherical sleeve 103a and the sphere 21 are in transition fit, and two contact surfaces are smooth surfaces. So that the spherical rotating part 20 can rotate 30 degrees in any direction relative to the lower connecting rod 103 under the condition of applying a certain force, and the spherical rotating part does not deflect under the action of friction force due to the influence of gravity of the rotating part 20 and other parts at the lower end.

The upper end of the upper cover body 105 is provided with a horizontally arranged motor box 110, a horizontally arranged motor 110a is arranged in the motor box 110, the motor 110a is provided with an output shaft 111, the output shaft 111 extends into the transmission cavity 22, the output shaft 111 is rotatably connected with the transmission cavity 22 through a first bearing 91, the other end of the output shaft 111 is connected with an output bevel gear 112, the output bevel gear 112 is meshed with a transmission bevel gear 113, a gasket 114 is arranged below the No. 2 bevel gear 113, the gasket 114 is arranged at the upper end of the upper cover body 105, the transmission bevel gear 113 is connected with a transmission shaft 115, the lower end of the transmission shaft 115 is carved with a transmission thread 115a, the transmission shaft 115 penetrates through the gasket 114 and the upper end of the upper cover body 105 and extends out of the. The center of gravity of the grass mowing mechanism 30 is arranged above the blade, so that the center of gravity of the grass mowing mechanism is convenient to stabilize under the condition that the gradient of the lawn frequently changes, good stability is kept, extra physical strength of users caused by maintaining the center of gravity is avoided, and labor intensity is reduced.

As shown in fig. 1, 2 and 6, the tail end of the transmission shaft 115 is provided with a grass cutting head 155, two ends of the grass cutting head 155 are provided with a plurality of grass cutting ropes 156, the middle section of the lower end of the transmission shaft 115 is provided with a rotary cutter head 151, the rotary cutter head 151 is screwed with a nut gasket through threads and fixed on the transmission shaft 115, the rotary cutter head 151 is provided with four trapezoidal blades 151a which are uniformly distributed, the head of each trapezoidal blade 151a is inclined by 30 degrees and arranged on the outer surface of the rotary cutter head 151, and the trapezoidal blades 151a are positioned above the grass cutting ropes 156. The design of trapezoidal blade 151a slope installation can form one updraft, can impel weeds to be vertical ascending state, improves the effect of mowing to can blow partial grass bits to trapezoidal blade department carries out the secondary cutting, makes the grass bits more small-size, is favorable to the corruption process of grass bits, forms the fertilization effect of grass bits.

As shown in fig. 1, 2 and 3, the left side of the lower cover 106 is provided with a left wheel 61, the right side of the lower cover 106 is provided with a right wheel 62, the rear side of the lower cover 106 is provided with a rear wheel 63, which is fixed by bolts and nuts, and the bottom end of the wheel 60 is higher than the bottom end of the lower cover 106.

As shown in fig. 1, 2 and 4, the upper end of the height adjustment mechanism 50 is a knob 51, the lower end of the knob 51 is connected with an adjustment rod 52, the upper end of the adjustment rod 52 is a smooth section 53, the lower end of the adjustment rod 52 is a threaded section 54, the smooth section 53 passes through the upper cover body 105 and then is connected with the lower cover body 106 through the threaded section 54, the smooth section 53 is rotatably connected with the upper cover body 105 through a bearing three 93 and a bearing four 94, the lower cover body 106 is provided with a threaded hole 106a corresponding to the threaded section 54, the rotation height adjustment mechanism 50 can control the distance between the lower cover body 106 screwed on the threaded section 54 and the upper cover body 105, thereby adjusting the height of the mowing mechanism 30 from the ground, controlling the height of the lawn stubble, placing the handheld mower on the ground, and easily swinging the connecting rod under the condition that a certain force is applied downwards through the connecting rod 100 to control the angle of the, so that the most comfortable posture of the arms can be still kept when the gradient of the lawn changes frequently.

The specific operation mode of the specific embodiment of the invention is as follows: the electric motor 110a is externally provided with a power supply and can be connected with a mobile power supply, the electric motor 110a controls a switch to be positioned at the handle at the upper end of the upper connecting rod 101, before the electric motor 110a is switched on, the height adjusting mechanism 50 can be adjusted according to the height of the lawn stubble, the connecting pipe knob 102 is controlled to adjust the length of the connecting rod 100 according to the height of an operator, the comfort level during the operation process is improved, after the electric motor 110a is switched on, the electric motor 110a starts to operate, the electric motor 110a drives the output rod 111 to rotate, the output rod 111 transmits power to the transmission shaft 115 through the connected output bevel gear 112 and the transmission bevel gear 113, the grass mowing head 155 driven by the transmission shaft 115 carries out grass mowing action, the rotary cutter head 151 and the trapezoidal cutter blade 151a driven by the transmission shaft 115 rotate to generate ascending air flow, weeds are in a vertically upward state, the lawn slope is changed, after a certain downward pressure is applied, the connecting rod 100 can be rotated to adjust the angle between the lower connecting rod 103 and the spherical rotating part 20, so that the change of the center of gravity is prevented from affecting the balance, and the most comfortable posture of the arm can be still kept.

The specific embodiments described herein are merely illustrative of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although the terms upper link, lower link, connecting tube knob, spherical sleeve, rotary member, sphere, transmission cavity, upper housing, lower housing, height adjustment mechanism, wheel, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and they are to be interpreted as any additional limitation which is not in accordance with the spirit of the present invention.

Claims

1. The utility model provides a hand-held mower, includes the upper shield body (105), upper shield body (105) below is equipped with the lower cover body (106) that the components of a whole that can function independently set up, evenly distributed has a plurality of wheels (60) on the lower cover body (106), its characterized in that: go up the cover body (105) and cover body (106) down and be connected through height adjusting mechanism (50), be equipped with grass mowing mechanism (30) in the cover body (106) down, grass mowing mechanism (30) front end down cover body (106) with be equipped with open opening (10) on the cover body (105) on, grass mowing mechanism (30) be connected with drive arrangement (40), last cover body (105) on be equipped with globular rotating part (20), globular rotating part (20) and lower connecting rod (103) rotatable coupling, lower connecting rod (103) upper end be equipped with telescopic upper connecting rod (101).

2. A handheld lawnmower according to claim 1, wherein: the end of the lower connecting rod (103) is provided with a semi-open spherical sleeve (103 a), the upper end of the spherical rotating part (20) is a sphere (21), the lower end of the spherical rotating part (20) is a transmission cavity (22), and the spherical sleeve (103 a) is sleeved outside the sphere (21).

3. A handheld lawnmower according to claim 2, wherein: the upper end of the upper cover body (105) is provided with a horizontally arranged motor box (110), a horizontally arranged motor (110 a) is arranged in the motor box (110), the motor (110 a) is provided with an output shaft (111), the output shaft (111) extends into the transmission cavity (22), the output shaft (111) is rotatably connected with the transmission cavity (22) through a bearing I (91), the other end of the output shaft (111) is connected with an output bevel gear (112), the output bevel gear (112) is meshed with a transmission bevel gear (113), a gasket (114) is arranged below the transmission bevel gear (113), the gasket (114) is arranged at the upper end of the upper cover body (105), the transmission bevel gear (113) is connected with a transmission shaft (115), the lower end of the transmission shaft (115) is carved with transmission threads (115 a), and the transmission shaft (115) penetrates through the gasket (114) and the upper end of the upper cover body (105) and extends out of the transmission cavity (22), the transmission shaft (115) is rotatably connected with the upper cover body (105) through a second bearing (92).

4. A handheld lawnmower according to claim 1, wherein:

the lower cover body (106) left side is equipped with left side wheel (61), the lower cover body (106) right side is equipped with right side wheel (62), the lower cover body (106) rear side is equipped with rear side wheel (63), fixes with bolt and nut, just wheel (60) bottom is higher than the lower cover body (106) bottom.

5. A handheld lawnmower according to claim 1, wherein: the upper end of the height adjusting mechanism (50) is a knob (51), the lower end of the knob (51) is connected with an adjusting rod (52), the upper end of the adjusting rod (52) is a smooth section (53), the lower end of the adjusting rod (52) is a threaded section (54), the smooth section (53) penetrates through the upper cover body (105) and then is connected with the lower cover body (106) through the threaded section (54), the smooth section (53) is rotatably connected with the upper cover body (105) through a third bearing (93) and a fourth bearing (94), and a threaded hole (106 a) corresponding to the threaded section (54) is formed in the lower cover body (106).

6. A handheld lawnmower according to claim 3, wherein: the tail end of the transmission shaft (115) is provided with a grass mowing head (155), and two ends of the grass mowing head (155) are provided with a plurality of grass mowing ropes (156).

7. A handheld lawnmower according to claim 6, wherein: the utility model discloses a grass cutting machine, including transmission shaft (115), transmission shaft (115) lower extreme middle section position is equipped with rotatory tool bit (151), rotatory tool bit (151) close soon through the screw thread and are fixed in with the nut gasket on transmission shaft (115), rotatory tool bit (151) are equipped with four evenly distributed's trapezoidal blade (151 a), trapezoidal blade (151 a) head slope 30 is located rotatory tool bit (151) surface, trapezoidal blade (151 a) are located the top of beating grass rope (156).

8. A handheld lawnmower according to claim 1, wherein: go up connecting rod (101) inside and be hollow structure, it is carved with first screw thread (101 b) to go up connecting rod (101) lower extreme, first screw thread (101 b) lower extreme is equipped with a plurality of elasticity stay (101 a) of evenly distributed, lower connecting rod (103) penetrate through behind elasticity stay (101 a) in going up connecting rod (101), just go up connecting rod (101) with connecting rod (103) junction is equipped with and connects pipe knob (102) with elasticity stay (101 a) complex down, connecting pipe knob (102) inside is carved with and first screw thread (101 b) complex second screw thread (102 b).