阅读说明：本技术 一种盲插的三法兰面的外插线打草头 (Blind-plugging external inserting line grass mowing head with three flange surfaces ) 是由 张华� 杨海岳 于 2020-05-20 设计创作，主要内容包括：本发明公开了一种盲插的三法兰面的外插线打草头,包括扣紧盖、敲击头组件、绕线轮组件、基座组件,所述基座组件上设有出线块,打草绳设置在所述绕线轮组件内,并可以穿过所述出线块延伸至所述基座组件外部,所述敲击头组件与所述绕线轮组件形成相连接的整体,所述扣紧盖与所述基座组件卡接,所述基座组件上设置有与电机输出轴相匹配的固定安装部；所述绕线轮组件包括但不限于通道上隔板、通道中间隔板和通道下隔板,所述中间隔板置于所述通道上隔板和通道下隔板之间,所述通道上隔板、通道中间隔板、通道下隔板组合后形成有导线通道。(The invention discloses a blind-plugged external inserting line grass mowing head with three flange surfaces, which comprises a fastening cover, a knocking head component, a winding wheel component and a base component, wherein a line outgoing block is arranged on the base component; the winding wheel assembly comprises but is not limited to a channel upper partition plate, a channel middle partition plate and a channel lower partition plate, wherein the middle partition plate is arranged between the channel upper partition plate and the channel lower partition plate, and a lead channel is formed after the channel upper partition plate, the channel middle partition plate and the channel lower partition plate are combined.)

1. The utility model provides an outer plug-in grass mowing head of three flange faces of blind plugging, includes fastening lid, strikes head subassembly, reel subassembly, base subassembly, be equipped with the piece of being qualified for the next round of competitions on the base subassembly, the rope setting of beating the grass is in the reel subassembly, and can pass the piece of being qualified for the next round of competitions extends to the base subassembly is outside, its characterized in that: the knocking head assembly and the reel assembly form a connected whole, and the fastening cover is clamped with the base assembly;

the base component is provided with a fixed mounting part matched with the output shaft of the motor;

the winding wheel assembly comprises an upper channel partition plate, a middle channel partition plate and a lower channel partition plate, wherein the middle partition plate is arranged between the upper channel partition plate and the lower channel partition plate, and a lead channel is formed after the upper channel partition plate, the middle channel partition plate and the lower channel partition plate are combined;

the passageway lower baffle with be formed with first appearance line chamber between the intermediate bottom of passageway, still including installing reel top board on the baffle on the passageway, the reel top board with the baffle is formed with the second and holds the line chamber on the passageway, the wire passageway intercommunication first appearance line chamber and second hold the line chamber.

2. The blind-mate, three-flange-surface, outer-extrapolation grass-mowing head according to claim 1, wherein: the channel intermediate baffle comprises 3 annularly and uniformly distributed baffle blocks, a plurality of guides are arranged on the channel on each baffle block, and the guides can be a combination of chamfer type guides, right angle type guides and linear type guides.

3. A blind-mate, three-flange-surface, outer-extrapolation grass-mowing head according to claim 2, wherein: three inclined openings are uniformly distributed on the partition board on the channel in an annular manner, and the inclined openings are connected with the channel on the partition board in the middle of the channel and the second wire accommodating cavity; the partition plate block is provided with an inclined guide plate, and the inclined guide plate is communicated with the first line containing cavity and a channel of the other partition plate block, so that the grass mowing rope can be inserted from the line outlet block and then enters the channel intermediate partition plate along the inclined guide plate, and then enters the second line containing cavity through the inclined opening.

4. The blind-mate, three-flange-surface, outer-extrapolation grass-mowing head according to claim 1, wherein: the knocking head assembly comprises a sliding cover, a knocking head, a flat gasket and a reel starting cover;

a bearing is pressed on the knocking head, a boss is arranged on the inner side of the sliding cover, the boss is inserted into an inner hole of the bearing and can be rotatably connected with the knocking head, a screw and a flat gasket are arranged on one side, far away from the sliding cover, of the knocking head, and the screw penetrates through the flat gasket and is locked on the boss of the sliding cover;

reel starts to cover the outer lane and is provided with the sloping block of annular equipartition, the sloping block with the inboard lug formation locking cooperation of fastening the lid, reel starts to cover with strike first fixed connection.

5. The blind-mate external extrapolation grass-mowing head with three flange surfaces according to claim 4, wherein: the utility model discloses a reel starting cover, including passageway, locating shaft, rapping head subassembly, reel subassembly, locating shaft, spring, reel starting cover, the passageway is gone up to be provided with the locating shaft on the baffle, the subassembly of beating is inserted and is established the locating shaft is epaxial, with the reel subassembly forms circumference fixed, axially mobilizable relation of connection, the locating shaft cover is equipped with the spring, the spring is arranged in reel starting cover with between the baffle on the passageway.

6. The blind-mate, three-flange-surface, outer-extrapolation grass-mowing head according to claim 1, wherein: the outer side of the wire outlet block arranged on the base component is an elliptical hole or an oblong hole, and the inner side of the wire outlet block is a tapered hole.

7. The blind-mate, three-flange-surface, outer-extrapolation grass-mowing head according to claim 1, wherein: the fastening cover is provided with a fastener, and the base component is provided with a clamping groove.

8. The blind-mate, three-flange-surface, outer-extrapolation grass-mowing head according to claim 1, wherein: the base component is provided with a buckle, and the buckle cover is provided with a clamping groove.

Technical Field

The invention relates to the technical field of garden machinery, in particular to an outer inserting line grass cutting head of a blind-inserting three-flange surface.

Background

The grass trimmer is a common garden tool, and the main principle of the grass trimmer is that a motor or an engine is used for driving a grass trimming head to rotate at a high speed. The flexible cutting line is wound on the spool, the spool is accommodated in the grass cutting head, the end part of the flexible cutting line extends out of the hole in the grass cutting head shell, and when the grass cutting head rotates at a high speed, the flexible cutting line also rotates at a high speed along with the grass cutting head shell, so that the cutting effect is realized.

At present, the grass cutting head on the market generally comprises reel subassembly, grass cutting head fastening cover, grass cutting head sliding seat, play line piece, slip lid, and it often has following defect:

1. the winding wheel assembly is fixedly connected with the output shaft of the motor, the grass mowing head fastening cover and the grass mowing head movable seat are not fixed, and the natural inertia is large under the condition of high-speed rotation due to the large volume of the grass mowing head fastening cover and the grass mowing head movable seat, so that the vibration and the noise are large;

2. reel assemblies are 2-part assemblies, and one of the parts is provided with an insert, so that it is difficult to ensure the concentricity of the insert and the reel during the production injection molding process; moreover, the reel is used as the fixed grass mowing head, the internal structure design is complex, the line capacity is small, and the guide design of the internal channel is unreasonable, so that the grass mowing rope with a thin diameter cannot be externally inserted and installed well;

3. the wire outlet hole on the wire outlet block is generally a rectangular hole or a circular hole, and because the center of the grass beating rope needs to deviate from the center of the wire outlet hole when the grass beating head is knocked, when the grass beating head moves up and down, the wire outlet block with the structure can cause easy wire clamping, cannot normally outlet wires and influences use.

4. No positioning is arranged between the sliding cover and the gasket, and the gasket is difficult to ensure to be concentric with the sliding cover, so that the rotary inertia is large, and large vibration and noise are generated.

Due to the above problems, there is a need for improvement.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the blind-plugging external inserting line grass cutting head with three flange surfaces, which has the advantages of simple structure, compact design and convenient assembly, and can effectively overcome the defects pointed out in the background art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a three flange faces of blind insertion's outer plug-in grass mowing head, is including detaining the lid, knocking head subassembly, reel subassembly, base subassembly, be equipped with the piece of being qualified for the next round of competitions on the base subassembly, the rope that beats the grass sets up in the reel subassembly, and can pass the piece of being qualified for the next round of competitions extends to the base subassembly is outside, knock the head subassembly with the reel subassembly forms the whole that is connected, detain the lid with the base subassembly joint, be provided with on the base subassembly with motor output shaft assorted fixed mounting portion.

In the technical scheme, the winding wheel assembly further comprises an upper channel partition plate, a middle channel partition plate and a lower channel partition plate, the middle partition plate is arranged between the upper channel partition plate and the lower channel partition plate, and the upper channel partition plate, the middle channel partition plate and the lower channel partition plate are combined to form a lead channel.

In the technical scheme, further, be formed with first line chamber of holding between the baffle under the passageway with the passageway intermediate bottom, still including installing reel top board on the baffle on the passageway, reel top board with baffle is formed with the second and holds the line chamber on the passageway, the wire passageway intercommunication first line chamber of holding and second hold the line chamber.

In the technical scheme, the channel intermediate partition plate comprises 3 partition plate blocks which are uniformly distributed in an annular mode, a plurality of guides are arranged on the channel on each partition plate block, and the guides can be a combination of chamfer type guides, right angle type guides and linear type guides.

In the technical scheme, furthermore, three inclined openings are uniformly distributed on the partition plate on the channel in an annular manner, and the inclined openings are connected with the channel on the partition plate in the middle of the channel and the second wire containing cavity; the partition plate block is provided with an inclined guide plate, and the inclined guide plate is communicated with the first line containing cavity and a channel of the other partition plate block, so that the grass mowing rope can be inserted from the line outlet block and then enters the channel intermediate partition plate along the inclined guide plate, and then enters the second line containing cavity through the inclined opening.

In the technical scheme, the knocking head assembly further comprises a sliding cover, a knocking head, a flat gasket and a reel starting cover;

a bearing is pressed on the knocking head, a boss is arranged on the inner side of the sliding cover, the boss is inserted into an inner hole of the bearing and can be rotatably connected with the knocking head, a screw and a flat gasket are arranged on one side, far away from the sliding cover, of the knocking head, and the screw penetrates through the flat gasket and is locked on the boss of the sliding cover;

reel starts to cover the outer lane and is provided with the sloping block of annular equipartition, the sloping block with the inboard lug formation locking cooperation of fastening the lid, reel starts to cover with strike first fixed connection.

In the technical scheme, further, be provided with the location axle on the baffle on the passageway, strike the head subassembly and insert and establish location epaxial, with the reel subassembly forms circumference fixed, axially mobilizable relation of connection, location axle sleeve is equipped with the spring, the spring is arranged in reel start lid with between the baffle on the passageway.

In the technical scheme, furthermore, the outer side of the wire outlet block installed on the base component is an elliptical hole or an oblong hole, and the inner side of the wire outlet block is a tapered hole.

Among the above-mentioned technical scheme, it is preferred, be equipped with the buckle on the straining lid, be equipped with the draw-in groove on the base subassembly.

Among the above-mentioned technical scheme, as another preferred scheme, be equipped with the buckle on the base subassembly, be equipped with the draw-in groove on the straining lid.

The invention has the beneficial effects that:

1. the internal channel of the grass cutting head is formed by combining 3 or more than 3 parts, so that the mould complexity of the original channel is simplified, the process manufacturing level is improved, and the grass cutting head is favorable for large-scale production;

2. the base assembly of the grass mowing head is used as a fixed part and is connected with the output shaft of the motor, so that the defects of large vibration and large noise caused by high-speed rotation can be overcome;

3. the design of the outgoing line block is more reasonable: the outer side surface of the line outgoing block adopts a transverse elliptical hole, and the inner side surface of the line outgoing block adopts a conical hole from large to small, so that the design is more in line with the actual working state, and the grass mowing rope is not easy to break from the inside of the grass mowing head, so that the situation that the continuous working cannot be realized is caused;

4. the reel forms a rigid whole, the knocking head can be integrated on the reel, the whole structure is compact, the positioning is good, the assembly is simple, the integrity is strong, and the free shaking is avoided;

5. the wire guide channel on the reel is formed by a plurality of parts, three guide channels are annularly distributed, the blind wire inserting effect and experience feeling are improved, the wire guide groove on the reel is not separated from the middle, the wire guide groove of the reel is intensively designed on one part of the reel locking cover, and steps caused by dislocation when the upper cover and the lower cover are combined when the wire guide groove is separated from the middle are eliminated, so that a grass cutting rope is not easy to pass;

6. the long-distance linear guide is specially designed on the wire guide channel of the reel, so that the deformation of the grass mowing rope can be avoided, and the insertion and the passing of the grass mowing rope are facilitated;

7. the sliding cover and the gasket are positioned, so that the concentricity of the sliding cover and the gasket can be ensured, and the defects of large vibration and noise caused by large moment of inertia are overcome.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an exploded view of the reel assembly of the present invention.

Fig. 3 is an axial cross-sectional view of a reel assembly of the present invention.

FIG. 4 is an exploded view of the knocking head assembly of the present invention.

FIG. 5 is an axial cross-sectional view of the rapping head assembly of the present invention.

Fig. 6 is a schematic view of the structure of a single spacer block of the present invention.

Fig. 7 is a schematic structural diagram of a channel intermediate partition formed by 3 partition blocks of the invention.

FIG. 8 is a schematic view of the interior of the line outlet block when the grass-mowing rope of the present invention is in an operating state.

In the drawing, 1, a fastening cover, 2, a sliding cover, 3, a large cap screw, 4, a bearing, 5, a knocking head, 6, a flat washer, 7, a screw, 8, a reel starting cover, 9, a self-tapping screw, 10, a reel upper pressure plate, 11, a channel upper partition plate, 111, a positioning shaft, 12, a channel middle partition plate, 121, a partition plate block, 13, a channel lower partition plate, 14, a wire outlet block, 14a, an outer side hole, 14b, an inner side hole, 15, a base assembly, 16, a spring, 17, a knocking head assembly, 18, a wire winding wheel assembly, 19, a wire guide channel, 20, a chamfer type guide, 21, a right-angle type guide, 22, a linear type guide, 23, a fixed mounting part, 24, an inclined opening, 25, an inclined guide plate, 26, a buckle, 27, a clamping groove, 28, an inclined block, 29, a first wire accommodating cavity, 30, a second wire accommodating cavity and a boss.

Detailed Description

Referring to fig. 1-8, there are shown embodiments of the present invention: the grass cutting device comprises a fastening cover 1, a knocking head assembly 17, a reel assembly 18 and a base assembly 15, wherein a line outlet block 16 is arranged on the base assembly 15, a grass cutting rope is arranged in the reel assembly 18 and can penetrate through the line outlet block 16 to extend to the outside of the base assembly 15, the knocking head assembly 17 and the reel assembly 18 form a connected whole, the fastening cover 1 is clamped with the base assembly 15, specifically, two buckles 26 are arranged on the fastening cover 1, and two corresponding clamping grooves 27 are arranged on the base assembly 15 so as to be connected in a buckling mode; be provided with on the base subassembly 15 with motor output shaft assorted fixed mounting portion 23, install on the base subassembly 15 the outside hole 14a of the piece 14 of being qualified for the next round of competitions is horizontal elliptical hole, the interior side hole 14b of the piece 14 of being qualified for the next round of competitions is the bell mouth.

The specific structure of the reel assembly 18: the reel assembly 18 is internally provided with a lead channel 19, the lead channel 19 is formed by combining a channel upper partition plate 11, a channel middle partition plate 12 and a channel lower partition plate 13 which are connected with each other, a first line accommodating cavity 29 is formed between the channel lower partition plate 13 and the channel middle partition plate 12, the reel assembly further comprises a reel upper pressure plate 10 mounted on the channel upper partition plate 11, a second line accommodating cavity 30 is formed between the reel upper pressure plate 10 and the channel upper partition plate 11, and the lead channel 19 is communicated with the first line accommodating cavity 29 and the second line accommodating cavity 30;

the channel middle partition plate 11 is composed of 3 partition plate blocks 121 which are uniformly distributed in an annular mode, a plurality of guides are arranged on the channel on each partition plate block 121, each guide is a combination of a chamfer type guide 20, a right-angle type guide 21 and a linear type guide 22, and the chamfer type guide 20 is preferably a linear chamfer;

three inclined openings 24 are uniformly distributed on the channel upper partition plate 11 in an annular manner, and the inclined openings 24 are connected with the channel on the channel middle partition plate 12 and the second wire accommodating cavity 30; the partition block 121 is provided with an inclined guide plate 25, and the inclined guide plate 25 is communicated with the first wire accommodating cavity 29 and a channel of the other partition block 121, so that a grass cutting rope can be inserted from the wire outlet block 14, then enters the channel middle partition plate 12 along the inclined guide plate 25, and then enters the second wire accommodating cavity 30 through the inclined opening 24.

The traditional grass cutting head is complex in structure of an internal channel, when the grass cutting rope is installed, the inlet and the outlet of the channel are required to be completely corresponding and consistent with a line hole of the line outgoing block, and the grass cutting rope can penetrate through the grass cutting head and then is wound. Different from the traditional rope threading mode of the grass mowing rope, the grass mowing head is provided with a plurality of wire guide channels and a plurality of inlets and outlets, the grass mowing rope can extend out of the other outlet block after being threaded through any channel through the guide of the wire guide channels, and then the rotary knocking head drives the whole reel assembly to rotate, so that the grass mowing rope in the channel can enter the upper and lower line accommodating cavities along the same line.

The knocking head assembly 17 has the following specific structure: comprises a sliding cover 2, a knocking head 5, a flat gasket 6 and a reel starting cover 8; the bearing 4 is pressed on the knocking head 5, a boss 31 is arranged on the inner side of the sliding cover 2, the boss 31 is inserted into an inner hole of the bearing 4 and can be rotatably connected with the knocking head 5, a screw 7 and a flat gasket 6 are arranged on one side, far away from the sliding cover 2, of the knocking head 5, and the screw 7 penetrates through the flat gasket 6 and is locked on the boss 31 of the sliding cover 2; the outer ring of the reel starting cover 8 is provided with inclined blocks 28 which are uniformly distributed in an annular mode, the inclined blocks 28 are in locking fit with an inner side protruding block (not shown in the figure) of the fastening cover 1, and the reel starting cover 8 is fixedly connected with the knocking head 5.

The installation and position relationship of the reel assembly 18 and the knocking head assembly 17: last 11 of baffle is provided with location axle 111 on the passageway, beat the head subassembly 17 and insert and establish on location axle 111, with reel subassembly 18 forms circumference fixed, the mobilizable relation of connection of axial, location axle 111 cover is equipped with spring 16, spring 16 is arranged in reel start lid 8 with between the baffle 11 on the passageway.

The assembly process of the invention:

1. taking out the base assembly 15 of the grass-mowing head;

2. respectively placing the 2 wire outlet blocks 14 into corresponding mounting holes of the base component 15;

3. taking out the knocking head 5 and the bearing 4, press-fitting the bearing 4 into a mounting hole in the knocking head 5, and locking 3 cap screws 3;

4. then taking out the sliding cover 2, and press-fitting the boss 31 on the inner side of the sliding cover into the inner hole of the bearing 4;

5. the flat washer 6 is taken out and fitted to the boss 31 of the slide cover 2 which has just been fitted to the bearing 4;

6. then locking the screw 7;

7. the materials are put in any direction at any angle in sequence, the cover 8 is started by the reel and is fixed on the knocking head 5 through the tapping screw 9, and the installation of the knocking head assembly 17 is completed;

8. taking out the lower channel partition plate 13, sequentially installing three partition plate blocks 121 on the lower channel partition plate 13, and then placing and installing the upper channel partition plate 11;

9. a reel upper pressing plate 10 is arranged above the channel upper partition plate 11, 3 threaded columns are arranged on the reel upper pressing plate 10, penetrate through the channel upper partition plate 11 and the channel middle partition plate 12 and are matched with threaded hole columns on the channel lower partition plate 13, the channel lower partition plate 13 and the reel upper pressing plate 10 are connected through 3 screws, and the installation of a reel assembly 18 is completed;

10. placing a spring 16 on a positioning shaft 111 on the upper partition 11 of the channel, and then inserting a knocking head assembly 17 on the positioning shaft 111 to complete the matching with the reel assembly 18;

11. placing the assembled entirety of the rapping head assembly 17 and the reel assembly 18 on the base assembly 15;

12. the fastening cover 1 of the grass mowing head is taken out, and the buckle 26 on the fastening cover 1 is buckled on the clamping groove 27 of the base component 15, so that the integral assembly of the grass mowing head is completed.

The working process of the invention is as follows: when in use, the fixed mounting part 23 on the base component 15 is fixedly connected with the output shaft of the grass trimmer, the motor is started to drive the whole grass trimmer to rotate at high speed, and the internal knocking head component 17 and the reel component 18 are fixedly mounted on the base component 15 as a whole, so that the grass trimmer rotates stably without generating excessive vibration and noise; when needing to go out the rope, strike downwards strike head 5, strike head 5 and drive and strike the whole displacement to reel subassembly 18 direction of head subassembly 17 to this makes reel start lid 8 break away from with the spacing of fastening lid 1, and reel subassembly 18 no longer follows base subassembly 15 motion this moment, can realize free rotation, thereby makes inside beat the grass rope 32 extend from the piece 14 of being qualified for the next round of competitions along wire passageway 19, when striking head 5 return, reel subassembly 18 resumes to follow base subassembly 15 motion, no longer goes out the rope.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention in any way, and simple modifications, equivalent changes and modifications may be made without departing from the technical scope of the present invention.