WO2020182073A1 - Tête de coupe-bordure et coupe-bordure la comprenant - Google Patents

Tête de coupe-bordure et coupe-bordure la comprenant Download PDF

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Publication number
WO2020182073A1
WO2020182073A1 PCT/CN2020/078184 CN2020078184W WO2020182073A1 WO 2020182073 A1 WO2020182073 A1 WO 2020182073A1 CN 2020078184 W CN2020078184 W CN 2020078184W WO 2020182073 A1 WO2020182073 A1 WO 2020182073A1
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WO
WIPO (PCT)
Prior art keywords
housing
percussion
head
head body
reel
Prior art date
Application number
PCT/CN2020/078184
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English (en)
Chinese (zh)
Inventor
戚邦彦
张煜
Original Assignee
宝时得科技（中国）有限公司
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Filing date
Publication date
Application filed by 宝时得科技（中国）有限公司 filed Critical 宝时得科技（中国）有限公司
Publication of WO2020182073A1 publication Critical patent/WO2020182073A1/fr

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/416—Flexible line cutters

Definitions

  • the invention relates to garden tools, in particular to a mowing head and a mowing machine using the mowing head.
  • a lawn mower As a garden tool for turf management, lawn mowers are being favored by more and more users and are widely used in golf courses, football fields, manors, courtyards and other turf trimmings.
  • a lawn mower includes a lawn mower and a motor for driving the lawn mower to rotate.
  • the mowing head includes a shell and a winding reel arranged in the receiving cavity of the shell.
  • the trimming wire is wound on the winding reel and passes out of the shell.
  • the motor drives the cutting head to rotate, thereby driving the cutting line to rotate synchronously, thereby realizing cutting.
  • a wire pay-off mechanism needs to be provided on the lawn mower to adjust the length of the lawn mower that passes through the housing at an appropriate time.
  • the percussion head strikes on the ground, so that the reel and the shell are disengaged to produce relative rotation, so as to realize the pay-off.
  • the winding reel moves axially in the mower head, which leads to poor stability of the loose mower line and wire jamming.
  • the user When the cutting line is exhausted, the user needs to reload the cutting line.
  • the traditional lawn mower needs to remove the winding reel, manually wind the cutting line to the winding reel, and then install it on the cutting head, which is very troublesome.
  • When loading the wire there is no need to disassemble the mowing head. Insert the mowing wire directly through the outlet hole, and then rotate the tapping head to wind the wire.
  • the tapping head does not only rotate. , It will move up and down in the axial direction, and the winding operation experience is poor.
  • the mowing head includes: a housing with a receiving cavity and an outlet hole for the mowing line to pass through the receiving cavity;
  • the percussion head includes a percussion head body, the percussion head body is arranged in the accommodating cavity and optionally rotates synchronously with the housing; the percussion head body is configured to operably move along the The rotation axis of the housing reciprocates, and the percussion head body can be connected to or separated from the housing during the reciprocating movement.
  • the percussion head body When the percussion head body is separated from the housing, the percussion head The main body can rotate relative to the casing to pay off the wire; and
  • the reel includes a reel body; the reel body is disposed in the receiving cavity; the reel body includes at least a pair of wire insertion openings, and the wire insertion openings can be aligned with the outlet holes, In order to allow the cutting line to be inserted into the wire insertion opening through the outlet hole; the bobbin body is axially limited and held in the receiving cavity, so that the wire insertion opening and the outlet hole No relative displacement occurs in the direction of the rotation axis;
  • a pair of the wire insertion openings communicate with each other, and the mutually communicating paths form a threading channel.
  • the grass trimming line can be inserted through one of the threading holes, passing through the threading channel, and passing through the other of the threading holes. Pass out
  • the outer surface of the percussion head body is recessed inward to form a wire groove, one end of the wire groove is aligned and communicated with one of the pair of wire insertion openings, and the guide groove The other end is aligned and communicated with the other of the wire insertion openings, and the inner wall of the reel body cooperates with the wire groove to define the wire passing channel;
  • the reel further includes an operating part connected to the main body of the reel, the operating part penetrates out of the housing for a user to perform a rotating winding operation, and the operating part No movement in the direction of the rotation axis occurs during operation.
  • the reel is sleeved outside the body of the percussion head, and the reel rotates synchronously with the rotation of the percussion head body, and the percussion head body is The movement in the direction of the rotation axis does not cause a corresponding movement of the spool in the direction of the rotation axis.
  • the number of the wire insertion openings is two, and the two wire insertion openings are symmetrically arranged on the partition edge at 180 degrees.
  • the percussion head further includes a percussion cap, the percussion cap is rotatably connected to the percussion head body about the rotation axis of the housing, and at least partially penetrates ⁇ Said shell.
  • the invention also provides a mowing head, including:
  • the housing has a receiving cavity and an outlet hole for the mowing line to pass through the receiving cavity;
  • the percussion head includes a percussion head body, the percussion head body is arranged in the accommodating cavity and optionally rotates synchronously with the housing; the percussion head body is configured to operably move along the The rotation axis of the housing reciprocates, and the percussion head body can be connected to or separated from the housing during the reciprocating movement.
  • the percussion head body When the percussion head body is separated from the housing, the percussion head The main body can rotate relative to the casing to pay off the wire; and
  • the spool includes a spool body; the spool body is disposed in the receiving cavity; the spool body includes a wire insertion opening that can be aligned with the wire outlet hole to allow The grass cutting line is inserted into the wire insertion opening through the outlet hole;
  • the reel further includes an operating part connected to the main body of the reel, the operating part penetrates out of the housing for a user to perform a rotating winding operation, and the operating part No movement in the direction of the rotation axis occurs during operation.
  • the reel is sleeved outside the body of the percussion head, and the reel rotates synchronously with the rotation of the percussion head body, and the percussion head body is The movement in the direction of the rotation axis does not cause a corresponding movement of the spool in the direction of the rotation axis.
  • the reel body is axially restricted and held in the receiving cavity, so that the wire insertion opening and the wire outlet hole do not undergo relative displacement in the direction of the rotation axis.
  • the bobbin body includes a bobbin and a spacer fixedly connected to the bobbin, and the spacer extends along the circumference of the bobbin to form on the bobbin A first winding area and a second winding area located on opposite sides of the spacer;
  • the number of the outlet holes is two, and the two outlet holes are arranged opposite to each other; the insertion openings are arranged in pairs on the partition edge, and include at least one pair suitable for aligning with the outlet holes The plug-in opening;
  • One of the wire insertion openings of each pair of the wire insertion openings is connected to the first winding area, and the other of the wire insertion openings is connected to the second winding area.
  • a pair of the thread insertion openings are connected to each other, and the mutually connected path forms a threading channel.
  • the grass cutting line can be inserted into one of the threading holes, passing through the threading channel, and One of the outlet holes is penetrated.
  • the peripheral surface of the percussion head body is recessed inward to form a wire groove, and one end of the wire groove is aligned and communicated with one of the pair of wire insertion openings.
  • the other end of the guide groove is aligned and communicated with the other of the wire insertion openings, and the inner wall of the reel body cooperates with the wire groove to define the threading channel.
  • the number of the wire insertion openings is two, and the two wire insertion openings are symmetrically arranged on the partition edge at 180 degrees.
  • the percussion head further includes a percussion cap, the percussion cap is rotatably connected to the percussion head body about the rotation axis of the housing, and at least partially penetrates ⁇ Said shell.
  • the percussion head further includes a bearing installed between the percussion head body and the percussion cap so that the percussion cap is opposite to the percussion head body Can be rotated.
  • the mowing head further includes an elastic member disposed between the housing and the percussion head body to provide the percussion head body facing the The pretension of the movement trend in the direction of the knocking cap.
  • the mowing head further includes a transmission structure arranged between the percussion head body and the housing;
  • the grass cutting head includes a grass cutting state and a line setting state
  • the transmission structure connects the main body of the striking head and the housing, so that the striking head can rotate synchronously with the housing;
  • the transmission structure separates the striking head body and the housing, so that the striking head can rotate relative to the housing.
  • the reel body is connected to the percussion head body, and the reel body is provided with a plurality of first transmission teeth arranged along the circumference of the reel body, so The percussion head body is provided with a plurality of second transmission teeth arranged along the circumference of the percussion head body;
  • the first transmission tooth meshes with the second transmission tooth, so that the reel body and the striking head body can rotate synchronously.
  • the first transmission tooth and the second transmission tooth both extend in a direction parallel to the rotation axis of the housing, so that the percussion head body along the housing During the movement in the direction of the rotation axis, the first transmission tooth and the second transmission tooth keep meshing.
  • the present invention also provides a grass trimmer, including the grass trimmer described in any one of the above embodiments.
  • the driving part of the cutting machine does not work (the cutting head does not rotate), connect the cutting line to the winding plate body, and then screw the operating part to drive the winding
  • the wire reel body and the percussion head body rotate relative to the casing, so as to realize the winding of the grass cutting line on the winding reel body. Since the spool body does not move along the rotation axis of the housing, it is more convenient to hold the operating part for screwing operations.
  • the percussion cap When it is necessary to pay off the wire, the percussion cap can be knocked by an external force to move the percussion head body along the rotation axis of the housing and separate from the housing. Since the reel body rotates synchronously with the percussion head body, the reel The main body and the percussion head body rotate at a certain angle relative to the casing under the pull of the cutting line passing through the casing, so that the cutting line wound around the spool body continues to pass out of the casing under the action of centrifugal force to achieve Pay off.
  • Figure 1 is a cross-sectional view of a mowing head in an embodiment of the invention
  • Fig. 2 is a schematic diagram of an exploded structure of the mowing head shown in Fig. 1;
  • FIG. 3 is a schematic diagram of the structure of the base of the mowing head shown in FIG. 1;
  • FIG. 4 is a schematic diagram of the structure of the bobbin of the mowing head shown in FIG. 1.
  • Fig. 5 is a structural diagram of a percussion head of a grass cutting head provided by another embodiment.
  • Fig. 6 is a schematic structural diagram of a lawn mower provided by an embodiment of the present invention.
  • the bobbin of the mowing head is movably installed in the shell of the mowing head along the axis of rotation.
  • One end of the percussion head is connected to the bobbin, and the other end penetrates the shell for external percussion. .
  • the spool moves along the axis of rotation and disengages from the casing, thereby generating relative movement with the casing to realize the wire setting.
  • the inventor of the present application found that the winding reel needs to move along the axis of rotation during the wire pay-off process of the traditional mowing head, so that the winding reel moves in the direction of the rotation axis relative to the position of the threading hole provided in the housing. , Which seriously affects the stability of the pay-off, and is prone to jamming.
  • Figure 1 shows a cross-sectional structure of a mowing head in an embodiment of the present invention.
  • Fig. 2 shows an exploded structure of the mowing head shown in Fig. 1.
  • the drawings only show structures related to the present invention.
  • the mowing head provided in an embodiment of the present invention includes a housing 10, a percussion head 20 (see FIG. 2 ), and a winding disk 30.
  • the casing 10 can be connected with the output shaft of the driving member (not shown) of the lawn mower to drive the casing 10 to rotate around its rotation axis.
  • the housing 10 has a receiving cavity and a wire outlet hole 146 through which the cutting line 100 passes through the receiving cavity.
  • the beating head 20 includes a beating head body 21.
  • the percussion head body 21 is disposed in the receiving cavity of the casing 10 and can rotate synchronously with the casing 10.
  • the percussion head body 21 is configured to operably reciprocate in the direction of the rotation axis of the housing 10, and during the reciprocating movement of the percussion head body 21 in the direction of the rotation axis of the housing 10, the percussion head body 21 can interact with
  • the casing 10 is connected or separated so that the percussion head body 21 can rotate relative to the casing 10.
  • the reel 30 includes a reel body 32 for winding the mowing thread 100 and an operation part 34 connected to the reel body 32.
  • the reel body 32 is disposed in the receiving cavity of the housing 10 and can rotate synchronously with the percussion head body 21.
  • the bobbin body 32 includes a wire insertion opening 3222 that can be aligned with the wire outlet hole 146 to allow the mowing wire 100 to be inserted into the wire insertion opening 3222 through the wire outlet hole 146.
  • the operating portion 34 is fixedly connected to or integrally formed on the bobbin body 32.
  • the operating portion 34 penetrates out of the housing 10.
  • the reel body 32 and the percussion head body 21 can be driven to rotate relative to the housing 10, thereby realizing the winding of the cutting line 100 on the reel On the body 32.
  • the operation portion 34 does not move in the direction of the rotation axis during the rotation winding operation.
  • the driving part of the mowing machine does not work (the mowing head does not rotate), connect the mowing wire to the wire insertion opening 3222 of the reel body 32, and then screw the operating part 34,
  • the reel body 32 and the percussion head body 21 are driven to rotate relative to the housing 10, so as to realize the winding of the cutting line 100 on the reel body 32. Since the percussion head body 21 can move along the rotation axis direction of the housing 10, and the spool body 32 cannot move along the rotation axis of the housing 10, it is more convenient to hold the operating portion 34 for screwing operations.
  • the percussion head 20 can be struck by an external force, so that the percussion head body 21 moves along the rotation axis direction of the housing 10 and is separated from the housing 10. Since the reel body 32 rotates synchronously with the percussion head body 21, the reel body 32 and the percussion head body 21 rotate to a certain angle relative to the casing 10 under the pull of the mowing line 100 passing through the casing 10 , So that the grass trimming line 100 wound around the spool body 32 continues to pass out of the housing 10 under the action of centrifugal force, so that the line is paid off.
  • the reel 31 is sleeved outside the percussion head body 21, so that the reel is rotated synchronously with the rotation of the percussion head body 21.
  • the reel 31 is sleeved outside the percussion head body 21, and can be partially nested or completely sleeved. That is to say, the reel 31 includes at least a part of the percussion head body 21 that is nested outside. It falls within the protection scope of the present invention.
  • the reel 31 is axially limited and held in the receiving cavity, that is, the reel body cannot move in the direction of the rotation axis relative to the receiving cavity, so that the wire insertion opening 3222 and the wire outlet hole 146 do not move relative to the direction of the rotation axis.
  • Axial limit retention should be understood as the fact that the reel 31 and the housing 10 do not move relative to each other in the axial direction, including the case where the reel 31 and the housing 10 do not move in the axial direction, and the reel 31 and the housing The case where the body 10 moves synchronously in the axial direction of rotation.
  • the reel 31 and the housing 10 do not move in the axial direction of rotation, and the movement of the percussion head body 21 in the direction of the rotation axis of the housing will not cause the reel 31 to move in the housing
  • the corresponding movement in the direction of the rotation axis of 10 makes the wire insertion opening 3222 and the wire outlet hole 146 not relatively displaced in the direction of the rotation axis, and always maintains alignment.
  • the percussion head 20 further includes a percussion cap 22.
  • the percussion cap 22 is rotatably connected to the percussion head body 21 about the rotation axis of the housing 10, and at least partially penetrates the housing 10. In order to make the percussion head body 21 move along the rotation axis direction of the housing 10 when the percussion cap 22 is percussed with an external force.
  • the percussion cap 22 can be stationary relative to the turf when it is in contact with the turf, it is avoided that the percussion head 20 rotating with the housing 10 contacts the turf, damages the turf, wears the percussion head, and increases the load on the driving parts of the lawn mower. Furthermore, since the percussion cap 22 can rotate relative to the percussion head body 21, it is not convenient for the operator to hold the rotary percussion head 20 and wind the cutting line 100 on the reel body 32. In view of this, the above-mentioned mowing head is provided with an operating portion 34 that penetrates the housing 10, and the operating portion 34 can be held to rotate the winding reel 30, thereby realizing winding, which is more convenient for the operator to handle the winding.
  • the percussion head 20 further includes a bearing 24 which is installed between the percussion head body 21 and the percussion cap 22 so that the percussion cap 22 is rotatably disposed relative to the percussion head body 21.
  • a bearing 24 which is installed between the percussion head body 21 and the percussion cap 22 so that the percussion cap 22 is rotatably disposed relative to the percussion head body 21.
  • the bearing 24 may include an inner ring 242 and an outer ring 244 that can rotate relatively.
  • One of the inner ring 242 and the outer ring 244 is fixedly connected to the striking head body 21, and the other is fixedly connected to the striking cap 22.
  • the percussion cap 22 can be rotated relative to the percussion head body 21.
  • the axis of the bearing 24 is collinear with the axis of the striking head body 21 and the striking cap 22.
  • the end of the percussion head body 21 facing the percussion cap 22 is provided with a mounting groove (not shown in the figure) for installing the above-mentioned bearing 24, and the percussion cap 22 is convexly provided on one side of the percussion head body 21 A boss (not shown in the figure) matched with the inner hole of the inner ring 242.
  • the striking head 20 further includes a first pressing Piece 25 and the second pressing piece 26.
  • One end of the first pressing member 25 is threadedly connected to the percussion head body 21, and the opposite end is pressed against the end of the outer ring 244 away from the percussion head body 21 to press and fix the outer ring 244 to the percussion head body 21.
  • One end of the second pressing member 26 is threadedly connected to the end of the boss, and the other end is pressed against the end of the inner ring 242 away from the percussion cap 22 to press and fix the inner ring 242 to the percussion cap 22.
  • the inner ring 242 and the outer ring 244 are respectively fixedly installed in a compression fixing manner, which is convenient for installation and disassembly.
  • the assembling of the bearing 24 is not limited to the method of pressing and fixing, and other methods can also be used, which is not limited here.
  • the outer ring 244 of the bearing 24 is in interference fit with the mounting groove
  • the inner ring 242 of the bearing 24 is in interference fit with the boss, so as to realize the tight fitting installation of the bearing 24.
  • the inner ring 242 of the bearing 24 can also be fixedly connected to the percussion head body 21, and the outer ring 244 of the bearing 24 can be fixedly connected to the percussion cap 22.
  • the mounting groove is opened in the striking cap 22, and the boss is formed in the striking head body 21.
  • the mowing head further includes a transmission structure (not marked in the figure), and the transmission structure is arranged between the percussion head body 21 and the housing 10.
  • the transmission structure is configured to connect or separate the percussion head body 21 and the housing 10 during the movement of the percussion head 20 along the rotation axis direction of the housing 10, so that the percussion head body 21 can be rotated relative to the housing 10, And then realize the tapping line.
  • the mowing head includes a mowing state and a line-off state.
  • the transmission structure can connect the striking head body 21 and the housing 10 so that the striking head body 21 can rotate synchronously with the housing 10.
  • the driver of the lawn mower drives the housing 10 to rotate.
  • the housing 10 drives the percussion head body 21 to rotate synchronously through the transmission structure, and the percussion head body 21 drives the reel body 32 to rotate synchronously, thereby making the reel body 32 rotates synchronously with the housing 10 to drive the cutting line 100 wound around the reel body 32 and passing through the housing 10 through the outlet hole 146 to rotate to cut grass.
  • the transmission structure can separate the percussion head body 21 and the housing 10, so that the percussion head body 21 can rotate relative to the housing 10, that is, the reel body 32 can rotate relative to the housing 10.
  • the mowing wire 100 wound around the spool body 32 is released, and the mowing wire 100 continues to pass out of the housing 10 through the wire outlet hole 146 under the action of centrifugal force, and the wire is paid off.
  • Fig. 3 shows the structure of the base of the mowing head shown in Fig. 1.
  • the transmission structure includes two sets of first transmission parts 1220.
  • One group of first transmission parts (not shown in the figure) are arranged on the percussion head body 21 and are arranged at intervals along the circumference of the percussion head body 21.
  • the other group of first transmission parts 1220 are disposed on the housing 10 and are arranged at intervals along the circumference of the housing 10.
  • the two sets of first transmission parts 1220 can be meshed with each other, so that the percussion head body 21 and the housing 10 can rotate synchronously. In this way, when the mowing head is in the mowing state, the two sets of first transmission parts 1220 mesh with each other to realize the synchronous rotation of the head body 1220 and the housing 10.
  • the knocking head body 21 moves relative to the housing 10 along the rotation axis direction of the housing 10, so that the two sets of first transmission parts 1220 are separated, so that the high-speed rotating mowing line 100 is pulled
  • the winding reel body 32 and the percussion head body 21 are relatively rotated with the housing 10 to realize the pay-off.
  • the first transmission portion 1220 may be a protrusion.
  • At least one set of the first transmission portion 1220 has an inclined surface b that is arranged obliquely with respect to the rotation axis of the housing 10, so that screwing the operating portion 34 can drive the reel body 32 and the striking head body 21 to face the inclined surface b.
  • the contact surfaces of the two sets of first protrusions 1220 are inclined planes, so under the action of external force, continue to screw the operating portion 34 so that the reel body 32 and the percussion head body 21 continue to face the housing 10 Rotating, so as to wind the cutting line 100 around the reel body 32.
  • the transmission structure further includes a set of second transmission portions 1222, and the set of second transmission portions 1222 includes at least two second transmission portions 1222.
  • the set of second transmission parts 1222 are disposed on the housing 10 and are arranged at intervals along the circumference of the housing 10. Wherein, in the direction of the axis of rotation of the housing 10, the set of second transmission parts 1222 and the set of first transmission parts 1220 provided in the housing 10 are arranged in a staggered arrangement, so that when the knock cap 22 is knocked, the knock The striking head body 21 moves along the rotation axis direction of the housing 10 so that the two sets of first transmission parts 1220 are separated until the first transmission part and the second transmission part 1222 provided on the striking head body 21 are engaged.
  • the percussion head body 21 moves in the reverse direction of the rotation axis of the housing 10 and resets, so that the first transmission part and the second transmission part 1222 provided in the percussion head body 21 are separated from each other.
  • the first transmission part 1220 provided in the housing 10 engages.
  • the setting of the second transmission part 1222 is convenient to control the length of the wire pay-off during each tapping process.
  • the second transmission portion 1222 may be a protrusion.
  • the reel body 32 rotates synchronously with the percussion head body 21 in the circumferential direction, and can move relative to the percussion head body 21 along the rotation axis direction of the housing 10.
  • the tapping cap 22 will cause the tapping head body 21 to move along the rotation axis of the housing 10, and the transmission structure separates the tapping head body 21 and the housing 10 so that The beating head body 21 rotates relative to the housing 10, that is, the reel body 32 rotates relative to the housing 10, so as to realize the pay-off.
  • the reel body 32 can move relative to the percussion head body 21 along the direction of the rotation axis of the housing 10, it can be realized that the reel body 32 does not follow the percussion head body 21 along the direction of the rotation axis of the housing 10 during the pay-off process. movement.
  • the reel body 32 is disposed on the percussion head body 21.
  • the reel body 32 is provided with a plurality of first transmission teeth (not shown) arranged at intervals along the circumference of the reel body 32.
  • the percussion head body 21 is provided with a plurality of second transmission teeth 212.
  • the plurality of second transmission teeth 212 are arranged at intervals along the circumferential direction of the percussion head body 21.
  • the first transmission tooth and the second transmission tooth 212 mesh with each other, so as to realize the synchronous rotation of the reel body 32 and the striking head body 21.
  • both the first transmission tooth and the second transmission tooth 212 extend in a direction parallel to the rotation axis of the housing 10, so that the percussion head body 21 moves in the direction of the rotation axis of the housing 10.
  • the meshing of the first transmission tooth and the second transmission tooth 212 will not hinder the movement of the percussion head body 21, and the two always keep meshing. That is to say, during the movement of the percussion head body 21 along the rotation axis of the housing 10, the first transmission tooth and the second transmission tooth 212 are always engaged, so that the percussion head body 21 and the reel body 32 are always maintained. Can rotate synchronously.
  • the mowing head further includes a sleeve 122 fixedly disposed in the housing 10, and the axis of the sleeve 122 is collinear with the rotation axis of the housing 10.
  • the percussion head body 21 is disposed on the shaft sleeve 122, and the transmission structure is disposed between the percussion head body 21 and the shaft sleeve 122. In this way, the connection between the percussion head body 21 and the housing 10 is achieved through the sleeve 122.
  • one of the two groups of first transmission parts 1220 of the transmission structure is disposed on the sleeve 122, and the other group is disposed on the percussion head body 21.
  • the second transmission part 1222 is also provided on the sleeve 122.
  • the two sets of first transmission parts 1220 abut (that is, mesh), so that the striking head body 21 and the housing 10
  • the connection enables the percussion head body 21 to rotate synchronously with the housing 10, and then drives the reel body 32 to rotate synchronously with the housing 10, that is, the entire grass cutting head rotates synchronously to realize grass cutting.
  • the tapping cap 22 When it is necessary to pay off the line (that is, the trimming head is in the payoff state), the tapping cap 22 is tapped so that the tapping head body 21 moves along the rotation axis direction of the housing 10. First, the first transmission part provided on the percussion head body 21 moves from a position abutting the first transmission part 1220 provided on the sleeve 122 along the rotation axis of the housing 10 to between two adjacent second protrusions 1222.
  • the external force acting on the percussion cap 22 disappears, and the percussion head body 21 can be reset under the action of the elastic member 40 described below, so that the first transmission part provided on the percussion head body 21 is again driven by the second transmission part.
  • the position where the part 1222 abuts moves along the rotation axis of the housing 10 and is arranged between two adjacent first transmission parts 1220 of the sleeve 122. At this time, there is a rotational speed between the percussion head body 21 and the sleeve 122. The difference makes the two sets of first transmission parts offset.
  • the percussion cap 22 is hit once, and the percussion head body 21 rotates relative to the sleeve 122 (that is, the housing 10). (Generally the angle difference between two adjacent first bosses 1220 provided on the sleeve 122), so as to realize the pay-off.
  • the percussion head body 21 is sleeved on the outside of the sleeve 122, and the transmission structure is provided between the percussion sleeve body 21 and the sleeve 122. More specifically, the two sets of first transmission parts 1220 are respectively provided on the inner wall of the percussion head body 21 and the outer wall of the sleeve 122. The second transmission part 1222 is disposed on the outer wall of the sleeve 122.
  • the mowing head further includes an elastic member 40, and the elastic member 40 is arranged between the housing 10 and the striking head body 21 to provide the striking head body 21 with movement toward the striking cap 22. Preload of the trend. In this way, when the external force acting on the percussion cap 22 disappears during the tapping and wire setting process, the percussion head body 21 can be restored to the position before tapping (ie, reset) under the elastic force of the elastic member 40.
  • the opposite ends of the elastic member 40 along the rotation axis direction of the housing 10 abut against the sleeve 122 and the striking head body 21, respectively, so as to provide the striking head body 21 with an edge along the housing 10
  • the elastic member 40 may be a spring.
  • the percussion head body 21 is sleeved on the outside of the sleeve 122.
  • the outer side wall of the sleeve 122 is provided with a first annular retaining ring d (see Figure 1 and Figure 3).
  • the inner side wall of the percussion head body 21 is provided with a second annular retaining ring f (see FIG. 1) that can be matched with the first annular retaining ring d, so as to cooperate with the first annular retaining ring d and the second annular retaining ring f
  • the percussion head body 21 is prevented from being separated from the shaft sleeve 122 by the end of the sleeve 122 under the elastic force of the elastic member 40.
  • the first annular retaining ring d extends around the circumference of the sleeve 122 and the second annular retaining ring f extends around the circumference of the percussion head body 21.
  • the housing 10 includes a base 12 and a cover 14, and the base 12 and the cover 14 are buckled with each other to form the aforementioned receiving cavity.
  • the housing 10 is designed to be composed of the base 12 and the cover 14, which facilitates disassembly and assembly of the housing 10, and facilitates maintenance and repair of the mowing head.
  • the sleeve 122 is received in the receiving cavity and is fixedly connected to the base 12.
  • the opening 142 through which the knocking cap 22 and the operating portion 34 pass through the housing 14 is opened in the housing cover 14.
  • the base 12 and the cover 14 can be snap-connected.
  • the base 12 has at least two clamping posts 124 protruding from one side of the sleeve 122, and the housing cover 14 defines a clamping slot 144 at a position corresponding to the clamping posts 124.
  • the clamping post 124 is aligned with the card slot 144 and inserted into the card slot 144, so that the base 12 and the cover 14 are clamped together.
  • the locking column 124 can also be provided on the cover 14, and the locking slot 144 can be provided on the base 12.
  • the base 12 and the cover 14 can be clamped and connected, which is not limited here.
  • the housing 10 is provided with at least two limiting portions 148 (see FIG. 1), and the at least two limiting portions 148 are respectively located in the direction of the reel body 32 along the axis of rotation of the housing 10.
  • the two ends of the spool are in contact with the ends of the corresponding spool body 32 to restrict the spool body 32 from moving along the rotation axis of the housing 10.
  • the limiting portion 148 is respectively disposed on the cover 14 and the base 12.
  • the limiting portion 148 provided on the shell cover 14 is used to restrict the movement of the reel body 32 along the rotation axis of the housing 10 toward the opening 142, and the limiting portion 148 provided on the base 12 is used to restrict the reel body 32 moves along the rotation axis of the housing 10 in a direction away from the port 142. It should be noted that in the cross-sectional structure of the mowing head shown in FIG. 1, only the limiting portion 148 provided on the housing cover 14 is shown.
  • the limiting portion 148 is not necessary.
  • the opposite ends of the reel body 32 along the axis of rotation of the housing 10 can be in contact with the base 12 and the cover 14 respectively to restrict the reel body 32. It moves in the direction of the rotation axis of the housing 10.
  • Fig. 4 shows the structure of the bobbin of the mowing head shown in Fig. 1.
  • the reel body 32 includes a bobbin (not shown) and a spacer 322 fixedly connected to the bobbin.
  • the spacer 322 extends along the circumferential direction of the bobbin to form a first winding area 324 and a second winding area 326 located on opposite sides of the spacer 322 on the bobbin.
  • the number of the outlet holes 146 is two, and the two outlet holes 146 are arranged oppositely.
  • the wire insertion openings 3222 are provided in pairs on the partition 322 and include at least one pair of wire insertion openings 3222 adapted to be aligned with the outlet holes 146.
  • One of the wire insertion openings 3222 of each pair of wire insertion openings 3222 is connected to the first winding area 324, and the other wire insertion opening 3222 is connected to the second winding area 326.
  • the number of the wire insertion openings 3222 is two, and the two wire insertion openings 3222 are symmetrically arranged on the partition 322 at 180 degrees.
  • one end of the grass trimming line 100 passed through the wire insertion opening 3222 connected with the first winding area 324 is wound around the first winding area 324 and passes out of the housing 10 through the corresponding outlet hole 146.
  • One end of the mowing thread 100 passed through the thread insertion opening 3222 communicating with the second winding area 326 is wound around the second winding area 326, and passes out of the housing 10 through another outlet hole 146.
  • the relative arrangement of the two outlet holes does not only include the situation that is completely opposite, but also the situation that there is a certain error range.
  • the thread insertion opening is used to clamp the end of the cutting line and is adapted to press the end of the cutting line into the insertion opening 3222.
  • two weeding lines 100 need to be provided, one end of one of the weeding lines 100 is inserted into and pressed tightly into the wire insertion opening 3222 connected to the first winding area 324, and is wound around the first winding area 324, The other end passes through the corresponding outlet hole 146 out of the housing 10; one end of the other mowing line 100 is inserted into and pressed tightly into the wire insertion opening 3222 communicating with the second winding area 326, and is wound around the second The other end of the winding area 326 passes out of the housing 10 through a corresponding outlet hole 146.
  • a pair of wire insertion openings 3222 communicate with each other, and the communicating path forms a wire passage.
  • the cutting line 100 can be inserted through one of the outlet holes 146, pass through the threading channel, and pass through the other outlet hole 146.
  • the pair of wire insertion openings 3222 are connected through the threading channel, only one mowing wire 100 is needed.
  • one end of the mowing wire 100 can be passed through a threading hole on the housing 10.
  • 146 penetrates into the threading channel through a corresponding thread insertion opening 3222. Then pass through another wire insertion opening 3222, and then pass through another wire insertion hole 146 out of the housing 10.
  • the operating portion 34 is manually rotated, so that the reel body 32 rotates about the rotation axis relative to the housing 10, so that both ends of the mowing rope 100 are wound around the first winding area 324 and the second winding area 326 respectively.
  • the wire assembly can be realized without disassembling the casing 10 of the mowing head, which is beneficial to simplify the operation of the mowing machine and improve the convenience of use.
  • the threading is extended by bending so as to bypass the central hole (not shown in the figure) of the spool for covering the percussion head body 21.
  • the outer peripheral surface of the percussion head body 21 is recessed inward to form a wire groove 213.
  • the wire groove 213 bypasses the central axis of the percussion head body 21 and surrounds
  • the percussion head body 21 has a half circle around it, one end of the wire groove 21 is aligned and communicated with one of the pair of wire insertion openings 3222, and the other end of the guide groove 21 is aligned and communicated with the other of the wire insertion openings 3222.
  • the reel 30 is sleeved on the percussion head 20, and the inner wall of the reel body 32 cooperates with the wire groove 213 to define a threading channel.
  • the wire groove 213 has a semi-annular shape, and the plane of the semi-annular shape is substantially perpendicular to the axis of rotation.
  • the percussion head body also includes a semi-annular trim groove (not shown) symmetrically arranged with the wire groove 213 , The trim groove and the wire groove 213 surround the percussion head body.
  • the trim groove keeps the center of mass of the percussion head body on the axis of rotation, and the opening of the wire groove 213 will not cause the center of mass of the percussion head body to deviate from its geometric center. In this way, the percussion head can be ensured during the grass cutting process. Stability, reduce vibration and noise.
  • the arrangement of the two outlet holes for grass cutting means that the two outlet holes 146 are arranged approximately symmetrically with respect to the rotation axis of the housing 10 (that is, the axis of the shaft sleeve 122), so that the grass cutting head receives force during rotation. Uniformity and good rotation stability.
  • the spool is a cylindrical structure with open ends, and is sleeved on the outside of the percussion head body 21.
  • the bobbin body 32 further includes two flanges 328 fixedly connected to opposite ends of the bobbin, and the flanges 328 extend along the circumference of the bobbin to prevent winding around the first winding area 324 and The cutting line 100 of the second winding area 326 is separated from the winding shaft from opposite ends of the winding shaft. It can be understood that the spacer 322 is located between the two flanges 328.
  • the present invention also provides a mowing machine 1, please refer to FIG. 6.
  • the mowing machine 1 includes the mowing head as described in any of the above embodiments.
  • the lawn mower 1 further includes an extension rod 6 and a rear end housing 8 provided at one end of the extension rod 6 and a grass trimming head provided at the other end of the extension rod.
  • the lawn mower 1 also includes a handle arranged on the extension rod 6, including an auxiliary handle 7 and a main handle 9 arranged at a certain distance. The user lifts the lawn mower 100 through the main handle 9 and the auxiliary handle 7 so that the cutting line 100 is The cutting surface formed by rotation cuts grass.
  • It also includes a driving member arranged in the rear housing 8, and the output shaft of the driving member is assembled in the sleeve 122 to drive the housing 10 to rotate.
  • the driving member may be a motor.
  • an end of the extension rod 6 away from the cutting head is provided with a power source, specifically a DC power source, and the DC power source is a battery pack, preferably a lithium battery pack.
  • the battery pack is detachably connected to the rear housing 8.
  • the DC power supply and the mowing head are separately arranged at the two ends of the extension rod 6, and the handle is arranged on the extension rod 6 relatively close to the driving part, so that the center of gravity of the entire lawn mower 1 is reasonably arranged, and the operator lifts the mowing through the handle
  • the machine 100 can save effort when working.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)

Abstract

La présente invention concerne une tête de coupe-bordure et un coupe-bordure. La tête de coupe-bordure comprend : un boîtier (10), une tête battante (20) et une bobine de fil (30). La tête battante comprend un corps de tête battante (21). Le corps de tête battante est disposé dans une cavité de réception et peut tourner de manière synchrone avec le boîtier. Le corps de tête battante est conçu pour se déplacer de manière fonctionnelle dans la direction de l'axe de rotation du boîtier, et le corps de tête battante peut être relié au boîtier ou déconnecté de celui-ci dans le processus de déplacement dans la direction de l'axe de rotation du boîtier. La bobine de fil comprend un corps de bobine de fil (32) et une partie d'actionnement (34). Le corps de bobine de fil est disposé dans la cavité de réception et peut tourner de manière synchrone avec le corps de tête battante. La partie d'actionnement s'étend hors du boîtier pour que l'utilisateur exécute une opération d'enroulement rotatif. La partie d'actionnement ne se déplace pas dans la direction de l'axe de rotation pendant l'opération d'enroulement rotatif. Pendant cette opération d'enroulement rotatif, un élément d'actionnement de rotation de fil effectue une opération d'enroulement, et la partie d'actionnement ne se déplace pas axialement dans la direction de l'axe de rotation du boîtier, ce qui facilite en outre une opération de vissage par la partie d'actionnement maintenue avec une main ; de plus, étant donné que la bobine de fil ne se déplace pas axialement par rapport au boîtier pendant le déroulement du fil, la stabilité de déroulement est élevée et le blocage de fil est moins susceptible de se produire.
PCT/CN2020/078184 2019-03-08 2020-03-06 Tête de coupe-bordure et coupe-bordure la comprenant WO2020182073A1 (fr)

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CN201920295734.5U CN209845727U (zh) 2019-03-08 2019-03-08 打草头及打草机
CN201920295734.5 2019-03-08

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WO2020182073A1 true WO2020182073A1 (fr) 2020-09-17

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Publication number Priority date Publication date Assignee Title
CN209845727U (zh) * 2019-03-08 2019-12-27 宝时得科技（中国）有限公司 打草头及打草机
CN111480444A (zh) * 2020-05-27 2020-08-04 浙江中坚科技股份有限公司 一种盲插的双法兰面的外插线打草头

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101553107A (zh) * 2006-11-03 2009-10-07 法布里齐奥·阿尔内托利 线型割草头
US20160128276A1 (en) * 2014-11-11 2016-05-12 Arnetoli Motor S.R.L. Line-winding spool for grass-cutting heads
CN105934147A (zh) * 2013-11-22 2016-09-07 G·E·艾利斯 直穿式线供给植被修剪设备
CN208079804U (zh) * 2017-08-07 2018-11-13 南京德朔实业有限公司 打草机及其外插式绕线打草头
CN209845727U (zh) * 2019-03-08 2019-12-27 宝时得科技（中国）有限公司 打草头及打草机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101553107A (zh) * 2006-11-03 2009-10-07 法布里齐奥·阿尔内托利 线型割草头
CN105934147A (zh) * 2013-11-22 2016-09-07 G·E·艾利斯 直穿式线供给植被修剪设备
US20160128276A1 (en) * 2014-11-11 2016-05-12 Arnetoli Motor S.R.L. Line-winding spool for grass-cutting heads
CN208079804U (zh) * 2017-08-07 2018-11-13 南京德朔实业有限公司 打草机及其外插式绕线打草头
CN209845727U (zh) * 2019-03-08 2019-12-27 宝时得科技（中国）有限公司 打草头及打草机

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