CN211090675U

CN211090675U - Grass cutting head convenient for replacing grass cutting rope

Info

Publication number: CN211090675U
Application number: CN201921876265.2U
Authority: CN
Inventors: 徐春初
Original assignee: 徐春初
Current assignee: ZHEJIANG DINGCHENG INDUSTRY & TRADE Co.,Ltd.
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-07-28
Anticipated expiration: 2029-11-01

Abstract

The utility model belongs to the technical field of garden machinery, in particular to a grass mowing head convenient for replacing grass mowing ropes, which comprises a chassis and an upper cover which are detachably matched, wherein a rope groove and an installation cavity are arranged in the chassis, and a latch is rotationally connected in the installation cavity; the outer end of the rope groove extends to the outer side wall of the chassis to allow the grass cutting rope to extend out, and the inner end of the rope groove is communicated with the mounting cavity; the clamping teeth press the rope groove under the action of the spring, and the grass mowing rope is clamped between the groove wall of the rope groove and the tooth tips of the clamping teeth; the tooth point of the latch inclines to the inner side of the chassis, so that the one-way locking is realized when the grass beating rope is pulled outwards. The utility model provides a grass mowing head of a grass mower, which is convenient for replacing grass mowing ropes by arranging a latch structure with an one-way lock on a chassis.

Description

Grass cutting head convenient for replacing grass cutting rope

Technical Field

The utility model belongs to the technical field of garden machine, concretely relates to conveniently change head of beating grass rope.

Background

The mower is a portable garden tool and is widely applied to weed handheld tools in places such as lawns, gardens, pastures and the like. The grass cutting machine is characterized in that a grass cutting rope is arranged on a grass cutting head, and weeds and vegetation are cut off by utilizing the rotation inertia generated by the grass cutting rope through the high-speed rotation of the grass cutting head. The traditional grass mowing rope is wound in the grass mowing head for a plurality of circles and then penetrates out through the small hole in the grass mowing head. When the grass mowing rope is worn or broken, the upper cover and the lower cover of the grass mowing head are opened, the damaged grass mowing rope is pulled out, and a new grass mowing rope is installed, so that the grass mowing head can be continuously used, and the user is very inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a conveniently change head of beating grass rope through set up the dead latch structure of one-way lock on the chassis, has made things convenient for the change of beating grass rope.

The purpose of the utility model is realized like this: a grass cutting head convenient for replacing a grass cutting rope comprises a chassis and an upper cover which are detachably matched, wherein a rope groove and an installation cavity are formed in the chassis, and a clamping tooth is rotatably connected in the installation cavity; the outer end of the rope groove extends to the outer side wall of the chassis to allow the grass cutting rope to extend out, and the inner end of the rope groove is communicated with the mounting cavity; the clamping teeth press the rope groove under the action of the spring, and the grass mowing rope is clamped between the groove wall of the rope groove and the tooth tips of the clamping teeth; the tooth point of the latch inclines to the inner side of the chassis, so that the one-way locking is realized when the grass beating rope is pulled outwards.

Furthermore, a cylinder is arranged in the installation cavity, the latch is sleeved on the cylinder, and the upper cover is covered on the chassis through a fastener to limit the upper end part of the latch.

Furthermore, the installation cavity sets up the spring groove in latch below, sets up the torsional spring in the spring groove, and torsional spring one end is fixed in the spring groove, and the other end is used in on the latch, provides the elastic force that one-way compresses tightly the rope of beating grass for the latch.

Furthermore, a plurality of rope grooves are uniformly distributed in the circumferential direction of the chassis and are respectively matched with corresponding grass beating ropes and clamping teeth.

Furthermore, the middle part of the chassis is provided with a shaft hole, an annular bulge is arranged around the shaft hole, and the periphery of the annular bulge is sleeved with the upper cover.

Further, an opening at the outer end of the rope groove is provided with an arc-shaped chamfer.

Compared with the prior art, the utility model outstanding and profitable technological effect is: when the grass cutting rope is used, the grass cutting rope penetrates into the rope groove from the outer side opening of the chassis, and when the end part of the grass cutting rope crosses the clamping tooth part, the grass cutting rope cannot be pulled out (but can be inserted and pulled out from the inner side in a single direction) due to the one-way locking effect of the clamping tooth. After the length of the grass mowing rope is adjusted, the grass mowing operation can be carried out.

When the grass mowing rope needs to be replaced, the damaged grass mowing rope is pulled out from the inner side, and a new grass mowing rope penetrates from the outer side, so that the replacement can be completed.

Drawings

Fig. 1 is an outline view of the grass cutting head in the embodiment of the present invention.

Fig. 2 is an internal structure diagram of the chassis according to the embodiment of the present invention.

Fig. 3 is an exploded view of the grass-mowing head according to the embodiment of the present invention.

Fig. 4 is a matching view of the chassis and the upper cover in the embodiment of the present invention.

Reference numerals: 1. an upper cover; 2. a chassis; 2a, a shaft hole; 2b, an annular bulge; 2c, a spring slot; 2c1, a straight slot; 3. beating a straw rope; 4. clamping teeth; 4a, a tooth tip; 4b, a clamping groove; 5. a cylinder; 6. rope grooves; 7. a screw; 8. a torsion spring.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings.

A grass cutting head convenient for replacing a grass cutting rope comprises a chassis 2 and an upper cover 1 which are detachably matched, as shown in figure 1; combine fig. 2, set up grooving 6 and installation cavity in the chassis 2, grooving 6 quantity can be rationally set up according to the actual work needs, and the circumference equipartition has four in this embodiment. The 6 sides of the inherent grooving of installation cavity are provided with vertical cylinder 5, rotate on the cylinder 5 and connect latch 4, and the prong 4a of latch 4 is towards grooving 6, and grooving 6 is in 4 side openings of latch so that it communicates with the installation cavity. The latch 4 is connected in a rotating way; the outer end of the rope groove 6 extends to the outer side wall of the chassis 2 for the grass-mowing rope 3 to extend out.

Combine fig. 2 and fig. 3, be provided with torsional spring 8 in the bottom of latch 4, the installation cavity that corresponds sets up spring groove 2c in latch 4 below and is used for torsional spring 8's embedding, and spring groove 2c extends there is straight line groove 2c1, and the one end card of torsional spring 8 is in straight line groove 2c1, and the other end is vertical upwards, in the draw-in groove 4b or the card hole at latch 4 back to exert the elastic force towards grooving 6 to latch 4. After the grass mowing rope 3 penetrates into the rope groove 6, the clamping teeth 4 press the rope groove 6 under the action of the spring, and the grass mowing rope 3 is clamped between the groove wall of the rope groove 6 and the tooth tips 4a of the clamping teeth 4. In this embodiment, the tip 4a slant chassis 2 inboards of latch 4 for beat grass rope 3 and can follow the outside and insert, then lock when outwards extracting, the fixed of beating grass rope 3 when guaranteeing to beat the grass head and rotate.

Referring to fig. 3 and 4, a shaft hole 2a is formed in the middle of the base plate 2, an annular protrusion 2b is formed around the shaft hole 2a, and the upper cover 1 is sleeved on the outer periphery of the annular protrusion 2b and fixed to the base plate 2 through a screw 7. The upper cover 1 has the function of limiting the upper end part of the latch 4, so that the latch 4 is prevented from being separated from the cylinder 5; the height difference between the cylinder 5 and the latch 4 can be set small, and the cylinder 5 abuts against the lower part of the upper cover 1; or a limiting convex ring is arranged on the bottom surface of the upper cover 1 and is buckled at the upper end of the cylinder 5 so as to control the axial movable gap of the latch 4.

Preferably, set up arc chamfer at 6 outer end openings of grooving, conveniently beat penetrating of grass rope 3.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a conveniently change head of beating grass rope which characterized in that: the detachable type rope clamping device comprises a chassis (2) and an upper cover (1) which are detachably matched, wherein a rope groove (6) and a mounting cavity are arranged in the chassis (2), and a clamping tooth (4) is rotatably connected in the mounting cavity; the outer end of the rope groove (6) extends to the outer side wall of the chassis (2) so as to allow the grass beating rope (3) to extend out, and the inner end of the rope groove (6) is communicated with the mounting cavity; the clamping teeth (4) press against the rope grooves (6) under the action of the springs, and the grass mowing rope (3) is clamped between the wall of each rope groove (6) and the tooth tips (4a) of the clamping teeth (4); the tooth tip (4a) of the latch (4) inclines towards the inner side of the chassis (2), so that the one-way locking is realized when the grass beating rope is pulled outwards.

2. The grass mowing head convenient for replacing the grass mowing rope according to claim 1, is characterized in that: the mounting cavity is internally provided with a cylinder (5), the latch (4) is sleeved on the cylinder (5), the upper cover (1) is covered on the chassis (2) through a fastener, and the upper end of the latch (4) is limited.

3. The grass mowing head convenient for replacing the grass mowing rope according to claim 2, characterized in that: the installation cavity sets up spring groove (2c) in latch (4) below, sets up torsional spring (8) in spring groove (2c), and torsional spring (8) one end is fixed in spring groove (2c), and the other end is used in latch (4), provides the elastic force that one-way compresses tightly rope (3) of beating grass for latch (4).

4. The grass mowing head convenient for replacing the grass mowing rope according to claim 1, is characterized in that: the rope grooves (6) are uniformly distributed on the chassis (2) in the circumferential direction and are respectively matched with the grass beating ropes (3) and the clamping teeth (4).

5. The grass mowing head convenient for replacing the grass mowing rope according to claim 1, is characterized in that: the chassis (2) middle part sets up shaft hole (2a), sets up annular arch (2b) around shaft hole (2a), upper cover (1) cover is in annular arch (2b) periphery.

6. The grass mowing head convenient for replacing the grass mowing rope according to claim 1, is characterized in that: an opening at the outer end of the rope groove (6) is provided with an arc-shaped chamfer.