CN213214365U

CN213214365U - Quick-release grass mowing head

Info

Publication number: CN213214365U
Application number: CN202021235705.9U
Authority: CN
Inventors: 袁锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-17
Filing date: 2020-06-29
Publication date: 2021-05-18
Anticipated expiration: 2030-06-29
Also published as: CN111802056A; CN213280674U; CN213187211U; CN111788923A; CN213214366U; CN111802054A; CN111802055A

Abstract

The application discloses quick detach head of beating grass includes: the bobbin comprises a shell, a bobbin and an elastic piece, wherein the shell is provided with a containing space, the bobbin is at least partially contained in the shell, and the bobbin and the shell form sliding connection along the direction of a central axis so that the bobbin can slide to at least a first axial position or a second axial position; the elastic element is arranged in the shell and is abutted against the spool so as to enable the spool to tend to move to a second spool position; the shell comprises an upper shell and a lower shell which can be split, and two threading windows which are arranged oppositely are formed; the bobbin includes: the winding part is provided with a cylindrical surface for winding, the separating part is formed in the middle section of the winding part and is constructed into a disc-shaped structure, the bobbin forms a threading channel extending along a straight line, and the threading channel continuously extends from one side edge of the separating part to the other side opposite to the separating part through the winding part. The utility model provides an useful part lies in that the quick detach structure of beating the grass of providing is reasonable reliable and can directly carry out the threading.

Description

Quick-release grass mowing head

Technical Field

The application relates to a garden instrument, concretely relates to quick detach head of beating grass.

Background

A grass trimmer is a garden tool and is used for trimming lawns.

The quick-release grass cutting head comprises a spool for winding a grass cutting rope, and the grass cutting rope is gradually consumed due to abrasion during grass cutting operation. After a certain period of time, the user needs to replace the grass cutting cord with a new one and wind the cord onto the spool.

The existing quick-release grass mowing head generally needs to disassemble a spool for winding, and the winding mode is time-consuming and labor-consuming, and the line clamping condition is easy to occur.

Disclosure of Invention

A quick release grass cutting head comprising: the bobbin comprises a shell, a bobbin and an elastic piece, wherein the shell is provided with a containing space, the bobbin is at least partially contained in the shell, the bobbin and the shell are in sliding connection along the direction of a central axis so that the bobbin can slide to at least a first axial position or a second axial position, the bobbin is in rotation-stop connection with the shell when sliding to the first axial position, and the bobbin is in rotation connection with the shell around the central axis when sliding to the second axial position; the elastic member is arranged inside the shell and is abutted against the spool so as to enable the spool to tend to move to the second axial position; the shell comprises an upper shell and a lower shell which can be split, and two threading windows which are arranged oppositely are formed; the bobbin includes: the winding device comprises a winding part and a separating part, wherein the winding part is formed with a cylindrical surface for winding, the separating part is formed at the middle section of the winding part and is constructed into a disc-shaped structure, a spool forms a threading channel extending along a straight line, and the threading channel continuously extends from one side edge of the separating part to the other side opposite to the separating part through the winding part; the threading channel comprises a closed section and an open section, the channel wall of the closed section is completely closed, the channel wall of the open section is provided with a channel notch, and the channel wall of the closed section is at least formed on the winding part and the separating part.

Further, the closing section of the threading channel extends in a direction perpendicular to the central axis.

Further, the bobbin further comprises: an upper stopper portion and a lower stopper portion; the upper stop part is provided with an upper stop surface; the lower stopping part is provided with a lower stopping surface; the upper stop surface and the lower stop surface are respectively arranged at two sides of the partition part.

Further, the winding portion is formed at least between the upper stopper surface and the lower stopper surface.

Further, the distance from the edge of the upper stop surface to the central axis is smaller than the distance from the edge of the partition to the central axis; the distance from the lower stop face edge to the central axis is greater than the distance from the edge of the partition to the central axis.

Further, the minimum distance from the upper stop surface to the partition is greater than the minimum distance from the lower stop surface to the partition.

Further, the upper stop surface or/and the lower stop surface is/are at least partially an annular plane.

Further, the threading channel extends in a direction parallel to the plane part of the upper stop surface or/and the lower stop surface.

Further, a shell hole is formed in the bottom of the shell;

the spool further includes an operating portion that exposes a shell aperture of the housing when the spool is in the first spool position; the operating part is arranged at the bottom of the bobbin.

Further, the spool further comprises a driven part, the driven part is arranged at the top of the spool, and the shell is provided with a driving part which can be matched with the driven part when the spool is in the first position.

Further, the winding portion is constructed in a pipe structure such that it has a central space.

Further, the spool further includes a connecting portion formed in a central space of the winding portion to constitute a portion of the threading passage passing through the intermediate space.

Further, the bobbin further includes a support portion formed in a central space of the winding portion and extending in a direction different from a direction in which the connection portion extends.

Further, the extending direction of the supporting portion is perpendicular to the extending direction of the connecting portion.

Further, the thread spool is provided with a through groove which penetrates through the connecting part and the thread winding part in the same direction as the extending direction of the threading channel.

Further, a plurality of isolation bars are formed at the top of the housing, the isolation bars having a stop edge, a top edge and a root edge, the stop edge extending substantially in a direction parallel to the central axis; the root edge obliquely intersects the stop edge.

Further, reinforcing rings are formed at the top of the shell and are respectively connected to the isolation grids; the top edge is perpendicular to the stop edge, and the top edge or/and the stop edge are obliquely intersected with the root edge respectively.

Further, the stop edges are all located on a cylindrical surface.

Further, the driven part is provided inside a central space of the winding part, the upper case is formed with a central tube capable of being fitted into the central space when the bobbin is at the first axis position, and the driving part is provided at an outer tube wall of the central tube.

Further, the top of center tube is equipped with the mounting groove, the mounting groove is a hexagonal open groove.

Further, the resilient member is at least partially located inside the center tube, and at least partially located in the central space.

Furthermore, the upper shell is also provided with an annular upper limiting wall on the periphery of the central tube, and a plurality of radial limiting ribs extending along the radial direction of the central axis are formed between the central tube and the upper limiting wall.

Furthermore, a protruding limiting block is arranged at the top of the bobbin, and when the bobbin is located at the position of the second axis, the limiting block is embedded between the two radial limiting ribs.

Further, the limiting block and the driven part are arranged at the same circumferential position.

Furthermore, the limiting block protrudes out of the top of the upper stop part.

Further, the driving part and the driven part are provided with an inclined surface obliquely intersected with the central axis.

Further, the driving part is provided with an open slot which is opened towards the bottom.

Further, the number of the driving parts is equal to or greater than the number of the driven parts.

Further, the upper stop part is embedded in the limiting wall.

Further, the upper shell has an inclined shell wall, and the inclined shell wall is a conical table surface taking the central axis as a rotation axis.

Furthermore, a plurality of upper limit unit cells are formed on the inner side of the upper shell corresponding to the inclined shell wall, each upper limit unit cell comprises an upper limit unit cell wall and connecting walls on two sides of the upper limit unit cell wall, each upper limit unit cell wall is a cylindrical surface with the central axis as a rotation axis, each connecting wall is an arc-shaped side and is arranged on two sides of the upper limit unit cell wall so as to surround the upper limit unit cell wall and the inclined shell wall to form an upper unit cell, and a plurality of upper supporting ribs located between the upper limit unit cell wall and the inclined shell wall are arranged in the upper unit cell.

Further, the lower casing has a straight casing wall which is a cylindrical surface having the central axis as a rotation axis.

Furthermore, a plurality of lower limiting units are formed on the inner side of the lower shell corresponding to the straight shell wall, each lower limiting unit comprises a lower limiting unit wall and connecting walls on two sides of the lower limiting unit wall, each lower limiting unit wall is a section of cylindrical surface taking the central axis as a rotation axis, each connecting wall is an arc-shaped side and is arranged on two sides of the lower limiting unit wall so as to enclose a lower unit groove, and a plurality of lower supporting ribs located between the lower limiting unit wall and the inclined shell wall are arranged in the lower unit groove.

Further, the upper limit cell wall and the lower limit cell wall are located on the same cylindrical surface.

Further, the upper limit unit further comprises a plug-in mounting structure, when the upper shell is combined with the lower shell, the plug-in mounting structure is inserted into the lower unit groove, and the plug-in mounting structure protrudes out of the upper unit groove.

Furthermore, the insertion structure is at least partially formed on the upper supporting rib.

Further, the epitheca is formed with the trip portion of two relative settings, trip portion is formed with extension arm and fixture block structure, and wherein the extension arm extends to the epitheca direction, the fixture block structure set up in the outside of extension arm.

The application has the advantages that: provides a quick-release grass mowing head which is reasonable and reliable in structure and can directly carry out threading.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it.

In the drawings:

FIG. 1 is a schematic view of a quick release grass-mowing head according to an embodiment of the application from a first perspective;

FIG. 2 is a schematic view of the quick release grass-mowing head shown in FIG. 1, as seen from a second perspective;

FIG. 3 is an exploded view of the quick release grass-mowing head shown in FIG. 1;

FIG. 4 is a schematic top view of the upper housing of the quick release grass-mowing head shown in FIG. 1;

FIG. 5 is a schematic view of the internal structure of the upper shell of the quick-release grass-mowing head shown in FIG. 1;

FIG. 6 is a side view of the upper housing of the quick release grass-mowing head shown in FIG. 1;

FIG. 7 is a schematic cross-sectional view of the upper shell of the quick release grass-mowing head shown in FIG. 1;

FIG. 8 is a schematic view of a portion of the inner side of the upper shell of the quick-release grass-mowing head shown in FIG. 1;

FIG. 9 is a perspective view of the spool of the quick release grass-mowing head shown in FIG. 1;

FIG. 10 is a perspective view of the spool of the quick release grass-mowing head shown in FIG. 1 from another perspective;

FIG. 11 is a schematic top view of the spool of the quick release grass-mowing head shown in FIG. 1;

FIG. 12 is a schematic top view of the spool of the quick release grass-mowing head shown in FIG. 1;

FIG. 13 is a schematic view of the quick release grass-mowing head of FIG. 1 with the spool cut away in a first manner;

FIG. 14 is a sectional view of the spool of the quick release grass-mowing head shown in FIG. 1, cut in a second manner;

FIG. 15 is a schematic view of the quick release grass-mowing head of FIG. 1 with the spool cut away in a third manner;

FIG. 16 is an enlarged partial schematic view of the threading channel at the end of the spool in the quick release grass-mowing head shown in FIG. 1;

FIG. 17 is a schematic view of the quick release grass-mowing head shown in FIG. 1, with a window mounted on the lower shell;

FIG. 18 is a schematic structural view of a lower shell of the quick-release grass-mowing head shown in FIG. 1;

FIG. 19 is a structural view of the lower shell of the quick release grass-mowing head shown in FIG. 1 from another perspective;

FIG. 20 is a schematic view of the structure of a window member in the quick release grass-mowing head shown in FIG. 1;

fig. 21 is a sectional view of the quick-release grass-mowing head shown in fig. 1 after being assembled.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 21, the quick-release grass-mowing head comprises: a housing 10, a bobbin 11 and an elastic member 12.

The housing 10 is formed with an accommodating space, the spool 11 is at least partially accommodated inside the housing, the spool 11 and the housing 10 form a sliding connection along the central axis direction so that the spool can slide to at least a first axial position or a second axial position, the spool forms a rotation stopping connection with the housing when sliding to the first axial position, and the spool forms a rotation connection around the central axis with the housing when sliding to the second axial position; the elastic element 12 is arranged inside the housing and is abutted against the spool so as to make the spool tend to move to the second axial position; the shell comprises an upper shell 101 and a lower shell 102 which can be split, and two opposite threading windows 103 are formed; the bobbin 11 includes: a winding part 111 and a separating part 112, the winding part 111 is formed with a cylindrical surface for winding, the separating part 112 is formed at the middle section of the winding part and is constructed in a disc-shaped structure, the bobbin 11 is formed with a threading channel 113 extending along a straight line, the threading channel 113 continuously extends from one side edge of the separating part 112 to the other side opposite to the separating part through the winding part; the threading channel 113 includes a closed section 1130 and an open section 1131, the channel wall of the closed section 1130 is completely closed, the channel wall of the open section 1131 is provided with a channel notch 1132, and the channel wall of the closed section is formed at least on the winding portion 111 and the separating portion 112.

Specifically, the closed section 1130 of the threading channel extends in a direction perpendicular to the central axis. The bobbin 11 further includes: an upper stopper 114 and a lower stopper 115; the upper stop portion 114 is formed with an upper stop surface; the lower stopper portion 115 is formed with a lower stopper surface; the upper and lower stopper surfaces are provided on both sides of the partition 112, respectively. The winding portion 11 is formed at least between the upper and lower stop surfaces. The distance from the edge of the upper stop surface to the central axis is smaller than the distance from the edge of the partition 112 to the central axis; the distance from the edge of the lower stop surface to the central axis is greater than the distance from the edge of the partition 112 to the central axis. The minimum distance from the upper stop surface to the partition is greater than the minimum distance from the lower stop surface to the partition. The upper stop surface or/and the lower stop surface is/are at least partially an annular plane. The threading channel extends parallel to the plane part of the upper stop surface or/and the lower stop surface.

Specifically, the bottom of the housing 10 is provided with a housing hole 104; the bobbin 11 further includes an operating portion 115, the operating portion 115 exposing the housing hole 104 of the housing when the bobbin is in the first bobbin position; the operation portion 115 is provided at the bottom of the bobbin 11.

Specifically, the bobbin 11 further includes a driven portion 116, the driven portion 116 is disposed on the top of the bobbin 11, and the housing 10 is provided with a driving portion 105 capable of cooperating with the driven portion 116 when the bobbin is in the first position.

Specifically, the winding portion 111 is configured as a pipe structure such that it has one central space 1110. The spool 11 further includes a connecting portion 117, the connecting portion 117 being formed in the central space 1110 of the winding portion 111 to constitute a portion through which the threading passage 113 passes through the intermediate space. Specifically, the bobbin 11 further includes a support portion 118, and the support portion 118 is formed in a central space of the winding portion and extends in a direction different from a direction in which the connection portion extends. The extending direction of the support portion 118 is perpendicular to the extending direction of the connecting portion 117. The spool 11 is provided with a through slot passing through the connecting part 117 and the winding part 111 in the same direction as the extending direction of the threading passage.

The top of the housing 10 is formed with a number of isolation barriers 106, the isolation barriers 106 having a stop edge, a top edge and a root edge, the stop edge extending substantially in a direction parallel to the central axis; the root edge obliquely intersects the stop edge.

The top of the housing 10 is further formed with reinforcing rings 107, and the reinforcing rings 107 are respectively connected to the isolation grids 106; the top edge is perpendicular to the stop edge, and the top edge or/and the stop edge respectively obliquely intersect with the root edge. In particular, the stop edges are located on one cylindrical surface. By adopting the scheme, the weeds can be prevented from winding the quick-release grass-mowing head.

The driven part 116 is disposed inside the central space of the winding part 111, the upper case 101 is formed with a central tube 1011 fittable into the central space when the bobbin is at the first axial position, and the driving part 105 is disposed at the outer wall of the central tube 1012. The top of the center tube 1012 has a mounting slot 1013, and the mounting slot 1013 is a hexagonal open slot. The resilient member 12 is at least partially located inside the central tube and at least partially located in the central space.

Specifically, the upper casing 101 is further provided with an annular upper stopper wall 1014 on the outer periphery of the center tube, and a plurality of radial stopper ribs 1015 extending in the radial direction of the center axis are formed between the center tube 1012 and the upper stopper wall 1014. The top of the spool 11 is provided with a protruding limiting block 119, and when the spool 11 is at the second axis position, the limiting block 119 is embedded between the two radial limiting ribs 1015. The stopper 119 is provided at the same circumferential position as the driven portion 116. The stopper 119 protrudes from the top of the upper stopper 114. The driving portion 105 and the driven portion 116 are each provided with a slope obliquely intersecting the central axis. The driving portion 105 is provided with an open groove opened to the bottom. Specifically, the number of the driving portions 105 is equal to or greater than the number of the driven portions 116. The upper stop part is embedded in the limiting wall. The upper housing 101 has a slanted housing wall 1016, the slanted housing wall 1016 being a conical table with the central axis as the axis of rotation. The upper shell 101 is formed with a plurality of upper limit position units 1017 on the inner side corresponding to the inclined shell wall, each upper limit position unit 1017 comprises an upper limit position unit wall 1018 and connecting walls 1019 on two sides of the upper limit position unit wall 1018, each upper limit position unit wall 1018 is a section of cylindrical surface taking the central axis as the rotation axis, each connecting wall 1019 is an arc-shaped side and is arranged on two sides of each upper limit position unit wall so as to surround the upper limit position unit wall and the upper limit position unit wall to form an upper unit groove 1010, and a plurality of upper supporting ribs 1011 which are positioned between the upper limit position unit wall and.

Specifically, the lower case 102 has a straight case wall 1021, and the straight case wall 1021 is a cylindrical surface having the central axis as a rotation axis. The lower shell 102 is formed with a plurality of lower limit units 1022 on the inner side of the corresponding straight shell wall, the lower limit units 1022 include lower limit unit walls 1023 and connecting walls 1024 on both sides thereof, the lower limit unit walls 1023 are a section of cylindrical surface taking the central axis as the rotation axis, the connecting walls 1024 are arc-shaped sides and are arranged on both sides of the lower limit unit walls to enclose a lower unit groove 1025, and a plurality of lower support ribs 1026 located between the lower limit unit walls 1023 and the straight shell wall 1021 are arranged in the lower unit groove 1025. The upper limit unit wall and the lower limit unit wall are positioned on the same cylindrical surface. The upper limit position unit 1017 further comprises a plug-in structure 1000, the plug-in structure is inserted into the lower unit groove when the upper shell 101 and the lower shell 102 are combined, and the plug-in structure protrudes out of the upper unit groove 1010. The insertion structure 1020 is formed at least partially on the upper support rib 1011. The upper shell 101 is formed with two opposite hook portions, the hook portions are formed with an extension arm 1001 and a latch structure 1002, wherein the extension arm 1001 extends towards the lower shell 102, and the latch structure 1002 is disposed outside the extension arm 1001.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A quick release grass cutting head comprising: casing, spool and elastic component, its characterized in that:

the housing is provided with a containing space, the spool is at least partially contained in the housing, the spool and the housing form a sliding connection along the direction of a central axis so that the spool can slide to at least a first axial position or a second axial position, the spool and the housing form a rotation stopping connection when sliding to the first axial position, and the spool and the housing form a rotation connection around the central axis when sliding to the second axial position;

the elastic member is arranged inside the shell and is abutted against the spool so as to enable the spool to tend to move to the second axial position;

the shell comprises an upper shell and a lower shell which can be split, and two threading windows which are arranged oppositely are formed;

the bobbin includes: the winding device comprises a winding part and a separating part, wherein the winding part is formed with a cylindrical surface for winding, the separating part is formed at the middle section of the winding part and is constructed into a disc-shaped structure, a spool forms a threading channel extending along a straight line, and the threading channel continuously extends from one side edge of the separating part to the other side opposite to the separating part through the winding part; the threading channel comprises a closed section and an open section, the channel wall of the closed section is completely closed, the channel wall of the open section is provided with a channel notch, and the channel wall of the closed section is at least formed on the winding part and the separating part.

2. The quick release grass-mowing head according to claim 1, characterized in that:

the closing section of the threading channel extends in a direction perpendicular to the central axis.

3. The quick release grass-mowing head according to claim 2, characterized in that:

the spool further comprises: an upper stopper portion and a lower stopper portion; the upper stop part is provided with an upper stop surface; the lower stopping part is provided with a lower stopping surface; the upper stop surface and the lower stop surface are respectively arranged at two sides of the partition part.

4. The quick release grass-mowing head according to claim 3, characterized in that:

the winding portion is formed at least between the upper stop surface and the lower stop surface.

5. The quick release grass-mowing head according to claim 4, characterized in that:

the distance from the edge of the upper stop surface to the central axis is smaller than the distance from the edge of the partition to the central axis; the distance from the lower stop face edge to the central axis is greater than the distance from the edge of the partition to the central axis.

6. The quick release grass-mowing head according to claim 5, characterized in that:

the minimum distance from the upper stop surface to the partition is greater than the minimum distance from the lower stop surface to the partition.

7. The quick release grass-mowing head according to claim 6, characterized in that:

the upper stop surface or/and the lower stop surface is/are at least partially an annular plane.

8. The quick release grass-mowing head according to claim 7, characterized in that:

the threading channel extends in a direction parallel to the plane part of the upper stop surface or/and the lower stop surface.

9. The quick release grass-mowing head according to claim 8, characterized in that:

the bottom of the shell is provided with a shell hole;

10. The quick release grass-mowing head according to claim 9, characterized in that:

the spool further comprises a driven part, the driven part is arranged at the top of the spool, and the shell is provided with a driving part which can be matched with the driven part when the spool is located at the first position.