Hedge trimmer and system and method for blade assembly

Abstract

A hedge trimmer and a tool assembly for mounting a blade assembly are provided. The hedge trimmer includes a housing on which a motor is disposed. The blade assembly extends from the housing and includes a blade component defining a blade opening through which a fastener is extendable. A retainer defines a retainer opening through which the fastener is extendable. A second back member opening on a back member extends from a first back member opening on the back member. The second back member opening defines a narrower cross-section compared to the first back member opening. The fastener is extendable from the first back member opening into the second back member opening. The retainer is positioned between the back member and the blade component.

Description

Area

[0001] The present disclosure relates generally to lawn and garden equipment, and more particularly to a hedge trimmer and a blade mounting system and method. background

[0002] Hedge trimmers generally may include a blade attached to a back member by a plurality of fasteners. Methods and tools for connecting the blade to the back member may require a variety of tools to hold and / or rotate the fasteners to connect the blade to the back member. Such methods and tools may also require a user to have access to multiple sides of the blade and back member, such as top and bottom surfaces, which may correspond to a fastener head and nut.

[0003] Such hedge trimmers and blade assembly methods and systems can increase assembly costs and complexity. Improved hedge trimmers and blade assembly methods and systems are desired in the art. Furthermore, hedge trimmers and blade assembly methods and systems that address one or more of these problems would be useful and advantageous. Short description

[0004] Aspects and advantages of the invention according to the present disclosure will be set forth in part in the description which follows, or may be obvious from the description, or may be learned by practice of the technology.

[0005] One aspect of the present disclosure relates to a hedge trimmer having a housing on which a motor is disposed. A blade assembly extends from the housing. The blade assembly includes a blade component defining a blade opening through which a fastener is extendable. A retainer defines a retainer opening through which the fastener is extendable. A back member defines a first back member opening and a second back member opening. The second back member opening extends from the first back member opening. The second back member opening defines a narrower cross-section compared to the first back member opening. The fastener is extendable from the first back member opening into the second back member opening. The retainer is positioned between the back member and the blade component.

[0006] One aspect of the present disclosure relates to a method of assembling a hedge trimmer blade assembly. The method includes disposing a fastener within a fastener opening on a socket assembly; disposing a blade component on the socket assembly, with a blade component opening positioned over the fastener to extend a neck of the fastener through the blade component opening; disposing a retainer on the blade component, with a retainer opening positioned over the fastener to extend the neck of the fastener through the retainer opening; disposing a spine member on the retainer, with a first spine member opening positioned over the fastener such that the neck of the fastener is positioned through the blade component opening, the retainer opening, and the first spine member opening;and pushing the back member toward a second back member opening extending from the first back member opening, wherein pushing the back member toward the second back member opening positions the neck of the fastener through the blade component opening, the holder opening, and the second back member opening;

[0007] One aspect of the present disclosure relates to a blade assembly for a lawn and garden tool. The blade assembly includes a blade component defining a blade opening through which a fastener is extendable. A retainer defines a retainer opening through which the fastener is extendable. A spine defines a first spine opening and a second spine opening. The second spine opening extends from the first spine opening. The second spine opening defines a narrower cross-section than the first spine opening. The fastener is extendable from the first spine opening into the second spine opening. The retainer is positioned between the spine and the blade component.

[0008] One aspect of the present disclosure relates to a tool assembly for assembling a blade assembly. The tool assembly includes a base defining a channel extending coextensively with a blade component of the blade assembly. A fastener opening is formed in the channel. The fastener opening includes a bottom configured to receive a fastener of the blade assembly. The bottom is positioned in the fastener opening to allow a neck of the fastener to extend through the fastener opening. A depth of the fastener opening corresponds to an extension along a height of a base wall of the fastener. A pusher is configured to be positioned over the blade component on the channel of the base.The pusher is configured to engage a back member of the blade assembly to translate the fastener along a direction of the blade component.

[0009] These and other features, aspects, and advantages of the present invention will become more fully understood from the following description and the appended claims. The accompanying drawings, which are incorporated in and constitute a part of this description, illustrate embodiments of the technology and, together with the description, serve to explain the principles of the technology. Short description of the drawings

[0010] A complete and enabling disclosure of the present invention, including the best mode of making and using the present systems and methods, directed to one skilled in the art, is set forth in the description which refers to the accompanying figures, in which: Fig. 1 shows a perspective view of an exemplary embodiment of a hedge trimmer assembly including a blade assembly according to aspects of the present disclosure; Fig. 2 shows an exploded view of an embodiment of a blade assembly according to aspects of the present disclosure; Fig. 2 shows an exploded view of an embodiment of a blade assembly according to aspects of the present disclosure; Fig. 3 an exploded view of the blade assembly of the Fig. 2 according to aspects of the present disclosure; Fig. 4 a perspective view of the blade arrangement of the Fig. 3 in a first position according to aspects of the present disclosure; Fig. 5 a perspective view of the blade arrangement of the Fig. 3 in a second position according to aspects of the present disclosure; Fig. 6A shows a perspective view of an embodiment of a fastener for a blade assembly according to aspects of the present disclosure; Fig. 6B is a longitudinal side view of the fastening element of the Fig. 6A according to aspects of the present disclosure; Fig. 6C is a broad side view of the fastening element of the Fig. 6A according to aspects of the present disclosure; Fig. 7A shows a perspective view of an embodiment of a holder of the blade assembly according to aspects of the present disclosure; Fig. 7B is a detailed view of a section of the holder of the Fig. 7A according to aspects of the present disclosure; Fig. 8A shows a perspective view of an embodiment of a spine member of the blade assembly according to aspects of the present disclosure; Fig. 8B is a detailed view of a section of the back element of the Fig. 8A according to aspects of the present disclosure; Fig. 9 shows a top view of an embodiment of the spine member of the blade assembly according to aspects of the present disclosure; Fig. 10 shows a plan view of an embodiment of a blunt body member of an embodiment of a hedge trimmer assembly according to aspects of the present disclosure; Fig. 11 shows a cross-sectional view of an embodiment of a portion of a blade assembly according to aspects of the present disclosure; Fig. 12 shows a perspective view of an embodiment of a tool system and an embodiment of a blade assembly according to aspects of the present disclosure; Fig. 12 shows a perspective view of one embodiment of a tool system and one embodiment of steps of a method for assembling a blade assembly according to aspects of the present disclosure; Fig. 13 shows a perspective view of the tool system and one embodiment of steps of the method for assembling the blade assembly according to aspects of the present disclosure; Fig. 14 shows a perspective view of the tool system and one embodiment of steps of the method for assembling the blade assembly according to aspects of the present disclosure; Fig. 15 shows a perspective view of the tool system and one embodiment of steps of the method for assembling the blade assembly according to aspects of the present disclosure; Fig. 16 shows a perspective view of the tool system and one embodiment of steps of the method for assembling the blade assembly according to aspects of the present disclosure; Fig. 17 shows a perspective view of the tool system and one embodiment of steps of the method for assembling the blade assembly according to aspects of the present disclosure; and Fig. 18 shows a flowchart outlining steps of a method for assembling a blade assembly according to aspects of the present disclosure.

[0011] The repeated use of reference numerals in the present description and drawings is intended to represent the same or analogous features or elements of the present invention. Detailed description

[0012] Reference will now be made in detail to embodiments of the present invention, one or more examples of which are illustrated in the accompanying drawings. The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations. Furthermore, each example is provided for the purpose of explanation and not limitation of the technology. Indeed, it will be apparent to those skilled in the art that modifications and variations may be made to the present technology without departing from the scope or spirit of the claimed technology. For example, features shown or described as part of one embodiment may be used with another embodiment to yield yet another embodiment.Therefore, it is intended that the present disclosure cover such modifications and variations as fall within the scope of the appended claims and their equivalents. The detailed description uses numerical and letter designations to refer to features in the drawings. The same or similar designations in the drawings and description have been used to refer to the same or similar parts of the invention.

[0013] As used herein, the terms "first," "second," and "third" may be used interchangeably to distinguish one component from another and are not intended to denote the location or importance of any individual component. The singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. The terms "coupled," "fixed," "attached," and the like refer to direct coupling, fixing, or fastening as well as indirect coupling, fixing, or fastening through one or more intermediate components or features, unless otherwise indicated herein. As used herein, the terms "comprises," "comprising," "includes," "including," "has," "having," or any other variation thereof are intended to cover non-exclusive inclusion.For example, a process, method, article, or device comprising a list of features is not necessarily limited to those features, but may include other features not expressly listed or inherent in such process, method, article, or device. Furthermore, unless expressly stated otherwise, "or" refers to an inclusive or rather than an exclusive or. For example, a condition A or B is satisfied by any of the following: A is true (or present) and B is false (or absent), A is false (or absent) and B is true (or present), and both A and B are true (or present).

[0014] Approximate terms such as "about," "generally," "approximately," or "substantially" imply values within 10 percent higher or lower than the stated value. When used in connection with an angle or direction, such terms imply values that are within 10 degrees greater or less than the stated angle or direction. For example, "generally vertical" imply directions within 10 degrees vertically in any direction, such as clockwise or counterclockwise.

[0015] Benefits, other advantages, and solutions to problems are described below with reference to specific embodiments. However, the benefits, advantages, solutions to problems, and any features that may result in a benefit, advantage, or solution occurring or becoming more apparent are not to be construed as a critical, required, or essential feature of any or all of the claims.

[0016] Embodiments of a hedge trimmer assembly 100, a blade assembly 110, a fastener 120, a blade assembly tool system 200, and a blade assembly method (hereinafter "method 1000") are provided. Embodiments of the hedge trimmer assembly 100, the blade assembly 110, and the fastener 120 provided herein may include and enable fewer parts, such as fewer fasteners, on the hedge trimmer blade assembly than known hedge trimmers and blade assemblies. Embodiments of the blade assembly tool system 200 and the method 1000 provided herein may enable the inclusion of fewer fasteners on a lawn and garden tool, such as a hedge trimmer assembly.Embodiments provided herein may reduce a number of parts; simplify assembly from a single side of the blade without requiring access to a second side (e.g., a back side); eliminate the need for torque tools; reduce the weight of the hedge trimmer assembly, blade assembly, and tools; prevent errors during assembly (e.g., errors related to fastener placement or torque tightening); increase the service life of the hedge trimmer assembly and blade assembly; or provide an aesthetic enhancement of the blade assembly and hedge trimmer assembly.

[0017] Referring to the drawings, the Fig. 1 illustrates an exemplary embodiment of a lawn and garden tool constituting a hedge trimmer assembly 100 according to aspects of the present disclosure. The hedge trimmer assembly 100 includes a housing 102 on which a motor and drive accessories (not shown) are positioned to operate a blade assembly 110. User interfaces 104, 106, such as handles, are arranged and configured to facilitate a user in grasping, operating, and articulately moving the hedge trimmer assembly 100, as may be generally understood in the art. A power articulated interface 108, such as a button or trigger, is attached to the housing 102 and / or one or more of the user interfaces 104, 106 and configured to allow the user to selectively provide power to operate the blade assembly 110.A wall 109 may be positioned between the housing 102 and the blade assembly 110, for example, to form a guard that may form a barrier between the user (or a portion of the user, such as the user's hands) and the blade assembly 110, as may be generally understood in the art.

[0018] The blade assembly 110 is attached to the housing 102 and extends from the housing 102, for example, along a longitudinal direction L. The blade assembly 110 may generally include one or more blade components 114, which may, for example, form a first and a second blade, or an articulated member and a stationary member, or a pair of articulated members. A member 112 extends from the housing 102 and may generally form a structural or rigid blunt body extension along which the blade component(s) 114 are supported, for example, along the longitudinal direction L. An end guard 107 may be positioned at a distal end of the blade assembly 110. The end guard 107 may at least partially obscure a portion of the blade assembly 110 distal to the housing 102, for example, to provide a barrier between the blade component(s) 114 and objects, items, etc. beyond the hedge trimmer assembly 100.

[0019] Referring to the Fig. 2-17, embodiments of components, tools, and methods for assembly according to aspects of the present disclosure are provided. Fig. 2-5 provide exploded perspective views of portions of one embodiment of the blade assembly 110 and generally illustrate steps for assembling the blade assembly 110 according to embodiments of the method 1000 described further herein. The blade assembly 110 includes one or more blade components 114, such as a plurality of teeth or cutting elements, distributed along the longitudinal direction L. The blade component 114 defines a slot or opening 115 through which a fastener 120 is extendable. A wall-forming retainer 130 includes a retainer opening 132 through which the fastener 120 is extendable. The retainer 130 is positioned on the blade component 114 between the blade component 114 and a spine member 140. The back member 140 forms a wall that includes a first back member opening 142 and a second back member opening 144 extending from the opening 142.The second opening 144 forms a narrower cross-sectional opening compared to the first opening 142, such as a narrower cross-sectional opening along a width direction W perpendicular to the longitudinal direction L.

[0020] In various embodiments, one or more of the openings 115, 132, 142 extend in a direction parallel to an extension of the blade component 114, such as along the longitudinal direction L. In still various embodiments, the holder 130 and the back member 140 are stackable on the blade component 114 (e.g., along the height H), as further described herein.

[0021] With reference to the Fig. 4-5, the fastening element 120 extends through the first spine opening 142, for example, during stacking of the spine 140 onto the holder 130. The openings 142, 144 are positioned to allow a user to articulate the blade component 114 along a first direction (e.g., first direction 91 along the longitudinal direction L) or articulate the spine 140 along a second direction (e.g., second direction 92 opposite to the first direction 91 along the longitudinal direction L), or both, to allow an extension of the fastening element 120 through the spine 140 from the first opening 142 (in the Fig. 4 in a first position) into the second opening 144 (in the Fig. 5 in a second position). The narrower cross-sectional area at the opening 144 may form an interference fit, interference fit, or other type of frictional fit to hold the blade component 114, the holder 130, and the back member 140 together by means of the fastener 120.

[0022] Referring to the Fig. 6A-6C provide views of one embodiment of the fastener 120. Embodiments of the fastener 120 include a base wall 126 from which a tab 123 extends along the height direction H perpendicular to the length direction L and width direction W. The tab 123 includes a base portion 128 connected to the base wall 126. A neck 122 extends from the base portion 128. A wing 124 extends from the neck 122.

[0023] In various embodiments, the neck 122 forms a narrower cross-section along the width direction W than the base portion 128. The wing 124 extends from the neck 122 along the width direction W. In some embodiments, the wing 124 extends further along the width direction W than the neck 122.

[0024] In still some embodiments, the base portion 128 may extend along the height direction H, which corresponds to a thickness along the height direction H of the holder 130 and the height of the opening 115. Briefly referring to the perspective and detailed views of an embodiment of the holder 130 in the Fig. 7A-7B, the retainer opening 132 may include a notch 134 extending along the longitudinal direction L from a central portion forming the retainer opening 132. The notch 134 may correspond in cross-sectional area to the neck 122 on the fastener 120. In still some embodiments, the notch 134 extends from the retainer opening 132 along the first direction 91, the second direction 92, or both. During assembly, as described herein and generally in the Fig. 2-5, a portion of the fastener 120, such as the neck 122, may extend into the notch 134 such that the holding, alignment, or interlocking of components of the blade assembly 114 with one another may be facilitated.

[0025] With reference to the Fig. 7A-7B, in various embodiments, the holder 130 may form a wall on which a plurality of holder openings 132 are positioned corresponding to a plurality of fasteners 120. The holder 130 may form a wall extending along the longitudinal direction L, on which the plurality of holder openings 132 are distributed along the longitudinal direction L. In still some embodiments, the holder 130 forms a unitary, monolithic component, such as a bar, a sheet, or a stamping.

[0026] Referring to the Fig. 8A, Fig. 8B, a perspective view and a detailed view of one embodiment of the back member 140 are provided. In various embodiments, the back member 140 may form a wall on which a plurality of back member openings 142, 144 are positioned corresponding to the plurality of fastening elements 120. The back member 140 may form a wall extending along the longitudinal direction L, on which the plurality of back member openings 142, 144 are distributed along the longitudinal direction L. The second back member opening 144 extends from the first back member opening 142 along the longitudinal direction L. For example, the second back member opening 144 may extend from a respective first back member opening 142 along the longitudinal direction L along the first direction 91, the second direction 92, or both.

[0027] Still referring to the Fig. 8A-8B and beyond to the Fig. 9, in some embodiments, the back member 140 includes a first surface 147 through which the back member openings 142, 144 are formed such that at least a portion of the fastener 120 can extend along the height direction H through the first surface 147. For example, the first back member opening 142 is formed through the first surface 147 to allow the neck 122 to extend through the opening 142. The second back member opening 144 is formed through the first surface 147 and extends from the first back member opening 142. The narrower cross-sectional width of the second back member opening 144 can retain the neck 122 of the fastener 120 to the back member 140. In some embodiments, the wing 124 ( Fig. 6A-6C) of the fastener 120 is configured to extend along the width direction W to prevent removal of the fastener 120 through the second spine opening 144. In still some embodiments, the wing 124 extends farther along the width direction W than the second spine opening 144 or in addition to the notch 134 to retain the spine 140 to the holder 130 and the blade component 114.

[0028] In still some embodiments, a ramp 125 ( Fig. 6A-6C) from the wing 124 along the height direction H toward the base wall 126. The ramp 125 is configured to promote a frictional fit, such as an interference fit or interference fit, of the fastener 120 to the back member 140 when the fastener 120 is pivotally moved into the second back member opening 144. For example, the ramp 125 may extend along the height direction H to rub, touch, or contact the first surface 147 of the back member 140.

[0029] Referring to the Fig. 8A-8B and beyond to the Fig. 9, in some embodiments, the backing member 140 includes the first surface 147, a second surface 145, and a cavity 149 formed therebetween. The second surface 145 may conceal an upper portion of the fastener 120, such as the wing 124. The wing 124 of the fastener 120 may be positioned within the cavity 149 between the first and second surfaces 145, 147.

[0030] Referring to the Fig. 9-10, embodiments of the back member 140 and the member 112 are provided. In some embodiments, the member 112 includes a bar or plate 117 that extends in the same direction as the blade component 114. A member opening 111 may be formed corresponding to a rib 141 extending from the back member 140. A plurality of ribs 141 may be distributed along the longitudinal direction L. A gap or recess 143 may be formed between pairs of ribs 141. A plurality of member openings 111 may be formed on the member 112 corresponding to the plurality of ribs 141. When assembled, the ribs 141 may extend into the openings 111 and hook or snap onto the member 112. The ribs 141 may form a retaining feature to at least partially connect the back member 140 to the member 112.

[0031] Briefly back to the Fig. 7A and Fig. 8A and further examination of the cross-sectional side view in the Fig. 11, the holder 130 and the back element 140 may form openings 136, 138, 146, 148 at which the holder 130 and the back element 140 may be connected to the housing 102 ( Fig. 1) of the hedge trimmer assembly 100. The openings 136, 146 may form proximal end openings at which the holder 130 and the back member 140 are coupled to the housing 102 ( Fig. 1). The openings 138, 148 may form distal end openings to which the end guard 107 may be attached. In various embodiments, the member 112, the blade component 114, or both may have openings corresponding to the openings 136, 146 or the openings 138, 148 to which the blade assembly 110 may be attached to the member 112.

[0032] With reference to the Fig. 11, in some embodiments, a fastener 150 may extend through member 112, spine member 140, retainer 130, and blade component 114. For example, a threaded shaft 152 may extend through openings on member 112, spine member 140, retainer 130, blade component 114, or combinations thereof to secure blade assembly 110 to member 112.

[0033] Now referring to the Fig. 12-17, views are provided showing an exemplary embodiment of a tool system 200 for blade assemblies. Referring to the Fig. 18, a flowchart is provided outlining exemplary steps of the method 1000. Referring to the Fig. 12-17, the tool system 200 includes a base 210 that forms a channel 212 into which a blade component (e.g., the blade component 114) can be disposed. In various embodiments, the base 210 forms the channel 212 extending in the same direction as the blade component 114, for example, along the longitudinal direction L. The base 210 forms a fastener opening or recess 220 into which embodiments of the fastener 120, as shown and described herein, can be disposed. The base 210 forms a floor 222 on which the fastener 120 can be disposed to extend through the recess 220. For example, the fastener 120 is disposed through the recess 220 and the base wall 126 of the fastener 120 is positioned on the floor 222 to allow the neck 122 to extend through the recess 220.In some embodiments, a depth or height of the recess 220 corresponds to an extension along the height direction H of the base wall 126. For example, when inserted into the recess 220, the neck 122 extends from above the recess 220.

[0034] Referring to the Fig. 18, the method 1000 includes at 1010 positioning, arranging, or otherwise inserting a fastener (e.g., fastener 120) into a fastener opening or recess (e.g., recess 220) on a socket device (e.g., socket 210), as shown in the Fig. 13. In various embodiments, the method 1000 includes, at 1010, inserting a plurality of fasteners into corresponding fastener recesses on the base. In some embodiments, the method 1000 includes, at 1010, arranging the plurality of fasteners in adjacent array along a direction corresponding to an extension of a second back panel opening (e.g., the second back panel opening 144) from a first back panel opening (e.g., the first back panel opening 142). For example, the second back panel opening 144 extends from the first back panel opening 142 along the longitudinal direction L, and the plurality of fasteners 120 are arranged in adjacent array along the longitudinal direction L in the recess(es) 220 on the base 210.

[0035] The method 1000 includes, at 1020, disposing one or more blade components (e.g., the blade component 114) on the base device, such as in the Fig. 13. In various embodiments, the method 1000 includes, at 1020, disposing a blade component opening (e.g., opening 115) over the fastener (e.g., fastener 120) such that the neck of the fastener extends through the blade component opening. In still some embodiments, the method 1000 includes, at 1020, disposing respective blade component openings over corresponding fasteners.

[0036] The method 1000 includes, at 1030, disposing a holder (e.g., holder 130) on the blade component (e.g., blade component 114), as shown in the Fig. 14. In various embodiments, the method 1000 includes, at 1030, disposing a retainer opening (e.g., opening 132) over the fastener (e.g., fastener 120) such that the neck of the fastener extends through the blade component opening and the retainer opening. In still some embodiments, the method 1000 includes, at 1030, disposing corresponding retainer openings over respective fasteners that extend through corresponding blade component openings.

[0037] The method 1000 includes, at 1040, arranging a back member (e.g., the back member 140) on the holder (e.g., the holder 130), as shown in the Fig. 15. In various embodiments, the method 1000 includes, at 1040, disposing a first spine opening (e.g., first spine opening 142) over the fastener (e.g., fastener 120) such that the neck of the fastener extends through the blade component opening, the retainer opening, and the first spine opening. In still some embodiments, the method 1000 includes, at 1040, disposing corresponding first spine openings over corresponding retainer openings and blade component openings.

[0038] The method 1000 includes, at 1050, pushing or pressing the backing member toward a second backing member opening (e.g., the second backing member opening 144) extending from the first backing member opening. In various embodiments, the second backing member opening 144 is positioned along the longitudinal direction L adjacent to the first backing member opening 142. Pushing the backing member 140 toward the second backing member opening 144 may include pushing or frictionally fitting the backing member 140 along the longitudinal direction L, for example, to press, interfere, or otherwise frictionally fit the neck 122 into the second backing member opening 144 to secure the fastener 120, the holder 130, the backing member 140, and the blade component 114 together.Pushing the back member toward a second back member opening positions the neck of the fastener through the second back member opening, the blade component opening, and the retainer opening.

[0039] With reference to the Fig. 16, in some embodiments, the tool assembly 200 includes a pusher 230 configured to be positioned over the blade component 114, the holder 130, the back member 140, and the holder 120. The pusher 230 is configured to engage the back member 140 to engage the second back member opening 144 and push it over the neck 122 of the fastener 120.

[0040] With reference to the Fig. 17 is a bottom view of the blade assembly 110 removed from the tool assembly 200. The Fig. 17 shows the base wall 126 positioned adjacent a bottom surface of the blade component 114 and the blade assembly 110. For example, Fig. 17 shows an exemplary embodiment of the base wall 126 of the fastening element 120 that has been removed from the recess 220 on the base 210.

[0041] Embodiments of the hedge trimmer assembly 100, the blade assembly 110, the fastener 120, the blade assembly tool system 200, and the blade assembly method 1000 provided herein may include and enable fewer parts, such as fewer fasteners, on the hedge trimmer blade assembly than known hedge trimmers and blade assemblies. Embodiments of the blade assembly tool system 200 and the blade assembly method 1000 provided herein may enable the inclusion of fewer fasteners on a lawn and garden tool, such as a hedge trimmer assembly. Embodiments provided herein may reduce a number of parts; simplify assembly from a single side of the blade without requiring access to a second side (e.g.,a back) is required; eliminate the need for torque tools; reduce the weight of the hedge trimmer assembly, blade assembly, and tools; prevent errors during assembly (e.g., errors related to fastener placement or torque tightening); increase the service life of the hedge trimmer assembly and blade assembly; or provide an aesthetic enhancement to the blade assembly and hedge trimmer assembly.

[0042] Further aspects and embodiments of the present subject matter are provided in the following sections: A hedge trimmer comprises a configured housing on which a motor is disposed; a blade assembly extending from the housing, comprising the blade assembly; a blade component defining a blade opening through which a fastener is extendable; a holder defining a holder opening through which the fastener is extendable; a back member defining a first back member opening and a second back member opening; wherein the second back member opening extends from the first back member opening; and wherein the second back member opening defines a narrower cross-section compared to the first back member opening; wherein the fastener is extendable from the first back member opening into the second back member opening, and wherein the holder is positioned between the back member and the blade component.

[0043] The hedge trimmer according to one or more of the clauses recited herein, wherein the fastening element is frictionally fitted into the second back element opening.

[0044] The hedge trimmer according to one or more of the clauses recited herein, the attachment member comprising a base wall; a tab extending from the base wall, the tab comprising a base portion connected to the base wall, and the tab comprising a neck extending from the base portion, the neck forming a narrower cross-section relative to the base portion and corresponding to the second back member opening.

[0045] The hedge trimmer according to any one or more of the sections described herein, wherein the attachment member comprises a wing extending from the neck, the wing forming a larger cross-section than the neck.

[0046] The hedge trimmer according to one or more of the sections described herein, wherein the wing includes a ramp extending from the wing toward the base wall, the ramp configured to frictionally connect the fastener to the back member when the fastener is positioned in the second back member opening.

[0047] The hedge trimmer according to any one or more of the clauses described herein, wherein the blade opening and the holder opening each extend from the first back member opening in the same direction to an extent of the second back member opening.

[0048] The hedge trimmer according to any one or more of the sections described herein, wherein the back member comprises a first surface having the first back member opening and the second back member opening formed thereon; and a second surface extending over the fastening member extending into the first back member opening or the second back member opening, the first surface and the second surface defining a cavity therebetween on which at least a portion of the fastening member extending through the first back member opening or the second back member opening is positioned.

[0049] The hedge trimmer according to any one or more of the sections described herein includes a second attachment member extendable through corresponding openings on the back member, the holder, the blade component, and a blunt body member.

[0050] A method of assembling a hedge trimmer blade assembly, comprising placing a fastener into a fastener opening on a base assembly; placing a blade component on the base assembly, with a blade component opening positioned over the fastener to extend a neck of the fastener through the blade component opening; placing a retainer on the blade component, with a retainer opening positioned over the fastener to extend the neck of the fastener through the retainer opening; placing a spine member on the retainer, with a first spine member opening positioned over the fastener such that the neck of the fastener is positioned through the blade component opening, the retainer opening, and the first spine member opening;and pushing the back member toward a second back member opening extending from the first back member opening, wherein pushing the back member toward the second back member opening positions the neck of the fastener through the blade component opening, the bracket opening, and the second back member opening;

[0051] The method of any one or more of the sections recited herein, wherein pressing the backing member toward the second backing member opening comprises frictionally fitting the neck of the fastener into the second backing member opening.

[0052] The method of any one or more of the sections recited herein, wherein pressing the backing member toward the second backing member opening comprises frictionally fitting a ramp of the neck of the fastener onto the backing member.

[0053] The method of any one or more of the sections described herein, wherein pressing the backing member toward the second backing member opening comprises transferring the neck of the fastener from the first backing member opening to the second backing member opening, the second backing member opening corresponding in cross-section to the neck of the fastener.

[0054] A blade assembly for a lawn and garden tool, the blade assembly comprising a blade component defining a blade opening through which a fastener is extendable; a retainer defining a retainer opening through which the fastener is extendable; a back member defining a first back member opening and a second back member opening; the second back member opening extending from the first back member opening, the second back member opening defining a narrower cross-section than the first back member opening, the fastener being extendable from the first back member opening into the second back member opening, and the retainer being positioned between the back member and the blade component.

[0055] The blade assembly according to any one or more of the paragraphs described herein, wherein the fastener is frictionally fitted into the second spine member opening.

[0056] The blade assembly according to any one or more of the clauses described herein, the hedge trimmer comprising a base wall; a tab extending from the base wall, the tab comprising a base portion connected to the base wall, and the tab comprising a neck extending from the base portion, the neck forming a narrower cross-section relative to the base portion and corresponding to the second spine member opening.

[0057] The blade assembly according to any one or more of the sections described herein, wherein the fastening element comprises a wing extending from the neck, the wing forming a larger cross-section than the neck.

[0058] The blade assembly according to any one or more of the sections described herein, wherein the wing includes a ramp extending from the wing toward the base wall, the ramp configured to frictionally connect the fastener to the backing member when the fastener is positioned in the second backing member opening.

[0059] The blade assembly according to any one or more of the paragraphs described herein, wherein the blade opening and the holder opening each extend from the first spine opening in the same direction to an extent of the second spine opening.

[0060] The blade assembly according to any one or more of the clauses recited herein, wherein the back member comprises a first surface having the first back member opening and the second back member opening formed thereon; and a second surface extending over the fastening member extending into one of the first back member opening and the second back member opening, the first surface and the second surface defining a cavity therebetween at which at least a portion of the fastening member extending through the first back member opening or the second back member opening is positioned.

[0061] A tool assembly for assembling a blade assembly, the tool assembly comprising a base defining a channel extending co-directionally with a blade component of the blade assembly.wherein a fastener opening is formed in the channel, the fastener opening comprising a bottom configured to receive a fastener of the blade assembly, the bottom positioned in the fastener opening to allow a neck of the fastener to extend through the fastener opening, a depth of the fastener opening corresponding to an extension along a height of a base wall of the fastener; and a pusher configured to be positioned over the blade component on the channel of the base, the pusher configured to engage a spine member of the blade assembly to translate the fastener along a direction of the blade component.

[0062] This written description uses examples to disclose the invention, including the best mode contemplated, and also to enable any person skilled in the art to practice the invention, including making and using devices or systems and performing methods incorporated therein. The patentable scope of the invention is determined by the claims and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they include structural elements that do not differ from the language of the claims, or if they include equivalent structural elements with insubstantial differences from the language of the claims.

Claims

[1] A hedge trimmer comprising: a configured housing on which a motor is arranged; a blade assembly extending from the housing, comprising the blade assembly; a blade component forming a blade opening through which a fastener is extendable; a holder forming a holder opening through which the fastener can be extended; a back member defining a first back member opening and a second back member opening, wherein the second back member opening extends from the first back member opening; and wherein the second back member opening defines a narrower cross-section compared to the first back member opening, wherein the fastening element is extendable from the first back member opening into the second back member opening, and wherein the holder is positioned between the back member and the blade component. [2] The hedge trimmer according to claim 1, wherein the fastening element is frictionally fitted into the second back element opening. [3] The hedge trimmer according to claim 1, the fastening element comprising: a base wall; a tab extending from the base wall, the tab comprising a base portion connected to the base wall, and the tab comprising a neck extending from the base portion, the neck forming a narrower cross-section relative to the base portion and corresponding to the second spine member opening. [4] The hedge trimmer according to claim 3, the fastening element comprising: a wing extending from the neck, the wing forming a larger cross-section than the neck. [5] The hedge trimmer of claim 4, wherein the wing includes a ramp extending from the wing toward the base wall, the ramp configured to frictionally connect the fastener to the back member when the fastener is positioned in the second back member opening. [6] The hedge trimmer according to claim 1, wherein the blade opening and the holder opening each extend from the first back element opening in the same direction to an extension of the second back element opening. [7] The hedge trimmer according to claim 1, the back element comprising: a first surface on which the first back element opening and the second back element opening are formed; and a second surface extending over the fastener extending into the first back opening or the second back opening, the first surface and the second surface defining a cavity therebetween at which at least a portion of the fastener extending through the first back opening or the second back opening is positioned. [8] The hedge trimmer according to claim 1, comprising: a second fastening element extendable through corresponding openings on the back element, the holder, the blade component and a blunt body element. [9] A blade assembly for a lawn and garden tool, the blade assembly comprising: a blade component forming a blade opening through which a fastener is extendable; a holder forming a holder opening through which the fastener is extendable; a back member defining a first back member opening and a second back member opening, wherein the second back member opening extends from the first back member opening; and wherein the second back member opening defines a narrower cross-section compared to the first back member opening, wherein the fastening element is extendable from the first back member opening into the second back member opening, and wherein the holder is positioned between the back member and the blade component. [10] The hedge trimmer according to claim 9, wherein the fastening element is frictionally fitted into the second back element opening. [11] The blade assembly of claim 9, the fastener comprising: a base wall; a tab extending from the base wall, the tab comprising a base portion connected to the base wall, and the tab comprising a neck extending from the base portion, the neck forming a narrower cross-section relative to the base portion and corresponding to the second spine opening. [12] The blade assembly of claim 11, the fastener comprising: a wing extending from the neck, the wing forming a larger cross-section than the neck. [13] The blade assembly of claim 12, wherein the wing includes a ramp extending from the wing toward the base wall, the ramp configured to frictionally connect the fastener to the backing member when the fastener is positioned in the second backing member opening. [14] The blade assembly of claim 9, wherein the blade opening and the holder opening each extend from the first back member opening in the same direction to an extent of the second back member opening. [15] The blade assembly of claim 9, the back member comprising: a first surface on which the first back element opening and the second back element opening are formed; and a second surface extending over the fastener extending into the first back panel opening or the second back panel opening, the first surface and the second surface defining a cavity therebetween at which at least a portion of the fastener extending through the first back panel opening or the second back panel opening is positioned. [16] The blade assembly of claim 9, comprising: a second fastening element extendable through corresponding openings on the back element, the holder, the blade component and a blunt body element. [17] A tool assembly for assembling a blade assembly, the tool assembly comprising: a base forming a channel extending co-directionally with a blade component of the blade assembly, wherein a fastener opening is formed in the channel, the fastener opening comprising a bottom configured to receive a fastener of the blade assembly, the bottom positioned in the fastener opening to allow a neck of the fastener to extend through the fastener opening, a depth of the fastener opening corresponding to an extension along a height of a base wall of the fastener; and a pushing device is configured to be positioned over the blade component on the channel of the socket, the pushing device being configured to engage a back member of the blade assembly to translate the fastener along a direction of the blade component. [18] The tool assembly of claim 17, the fastener comprising: a base wall; a tab extending from the base wall, the tab comprising a base portion connected to the base wall, and the tab comprising a neck extending from the base portion, the neck forming a narrower cross-section relative to the base portion and corresponding to the second spine opening. [19] The tool assembly of claim 17, the fastener comprising: a wing extending from the neck, the wing forming a larger cross-section than the neck, the wing including a ramp extending from the wing towards the base wall. [20] The tool assembly of claim 19, wherein the ramp is configured to frictionally connect the fastener to the back member when the fastener is positioned in the second back member opening.

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