Tip and adapter coupling system

Abstract

A locking assembly for attaching a wear member (200) to a base (300) includes a retention block (400) having a spring (600) attached to the retention block (400) that fits into a bore of the base (300). A locking pin (500) fits into the bore (220) of the wear member (200) and the bore (308) of the retaining block (400) retaining the wear member (200) on the base (300). The locking pin (500) is engaged with the spring (600), which prevents unintentional rotation of the locking pin (500) such that the locking pin (500) is trapped in the bore (220) of the wear member (200), preventing the locking pin from being unintentionally removed.

Description

Technical Field

[0001] The present disclosure relates to a retention mechanism employed on a work tool assembly, such as a bucket assembly used in earthmoving, mining, construction equipment, etc., for attaching a tip to an adapter of the work tool assembly. More specifically, the present disclosure relates to a retention mechanism that uses a spring attached to a retention block that interacts with a locking pin to retain the tip on the adapter. Background Art

[0002] Machines such as wheel loaders, excavators, and the like employ work tool assemblies including bucket assemblies, rakes, shears, and the like that have teeth or tips attached thereto to assist in performing work on materials such as dirt, rocks, sand, and the like. For example, teeth or tips may be attached to a bucket assembly to assist the bucket assembly in penetrating the ground to facilitate shoveling dirt into the bucket. Adapters are typically attached to the working edge (e.g., base edge, side edge, etc.) of a bucket or other work tool so that different types of teeth or tips may be attached to the work tool. Moreover, by providing a retention mechanism for selectively maintaining the tip on the adapter or allowing the tip to be removed from the adapter, the tip or teeth may be easily replaced when worn.

[0003] U.S. Patent No. 5,435,084 discloses a wear member for an excavating tooth assembly, the wear member having a base nose, a replaceable tooth tip mounted on the base nose, and a pin securing the tip to the nose. The pin includes a locking head eccentric to the pin and a cushion-like elastic member placed between the head and the tooth tip. The locking head is rotated so that the elastic member is compressed to drive the tooth tip in a direction that keeps the tip in a nose contact position.

[0004] As can be seen, the '084 patent does not provide a mechanism to resist rotation of the locking pin. Therefore, there is a need to develop a retention mechanism that is less susceptible to accidental rotation of the locking pin, which could cause the retention mechanism to accidentally unlock, thereby increasing the risk of tip loss. Summary of the invention

[0005] A tip and adapter assembly according to an embodiment of the present disclosure may include a tip including a body defining an assembly direction, a vertical axis perpendicular to the assembly direction, and a transverse axis perpendicular to the vertical axis and the assembly direction. The body of the tip may include: a forward working portion disposed along the assembly direction including a closed end; and a rear attachment portion disposed along the assembly direction including an open end. The rear attachment portion may define: an exterior surface; an adapter nose receiving recess extending longitudinally from the open end; a retention mechanism receiving aperture communicating with the adapter nose receiving recess and the exterior surface; and a first flange defining a first transverse undercut in the retention mechanism receiving aperture. The assembly may also include an adapter including a body including a nose portion configured to fit within the adapter nose receiving recess of the tip. The body of the adapter may include an exterior surface defining a polygonal retention block receiving aperture.

[0006] A wear assembly according to an embodiment of the present disclosure may include a body defining a longitudinal axis, a vertical axis perpendicular to the longitudinal axis, and a transverse axis perpendicular to the vertical axis and the longitudinal axis. The body of the wear component may also include: a forward wear portion disposed along the longitudinal axis; and a rear attachment portion disposed along the longitudinal axis including an open end. The rear attachment portion may define: an exterior surface; an adapter nose receiving recess extending longitudinally from the open end; a retention mechanism receiving hole extending from the exterior surface through the body to the adapter nose receiving recess; and a first flange defining a first transverse undercut in the retention mechanism receiving hole.

[0007] An adapter according to an embodiment of the present disclosure may include a body including: a nose portion having an outer surface that defines a polygonal retention block receiving hole having a base surface; and a circular pin receiving hole that extends from the base surface.

[0008] A base according to an embodiment of the present disclosure may include a body including a nose portion having an outer surface defining an at least partially non-circular retention block receiving hole at the outer surface, the retention block receiving hole having a base surface spaced apart from the outer surface; and a circular pin receiving hole extending from the base surface.

[0009] A retention mechanism according to an embodiment of the present disclosure may include a pin, which includes a driving portion and a spring engaging portion, wherein the driving portion includes a polygonal hole and includes a revolving surface defining a rotation axis, a radial direction, and a circumferential direction, and the spring engaging portion includes a circumferential surface having at least one recess disposed on the circumferential surface.

[0010] A retention mechanism according to another embodiment of the present disclosure may include a retention block including an outer perimeter having a non-rotating surface, a pin receiving hole defining an inner surface offset inwardly from the non-rotating surface, and a spring receiving hole extending from the non-rotating surface to the inner surface.

[0011] A locking assembly according to an embodiment of the present disclosure may include a spring comprising a top platform member, a first undulating side member extending from the top platform member, a second undulating side member extending from the top platform member, a first attachment flange extending from the first undulating side member, and a second platform member extending from the second undulating side member. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a perspective view of a work tool assembly, such as a bucket assembly, that utilizes a tip, adapter, and retention mechanism (also referred to as a locking assembly) having components configured in accordance with various embodiments of the present disclosure.

[0013] Figure 2 yes Figure 1 A perspective view of the tip and adapter assembly with locking assembly, with Figure 1 The work tool components of FIG. 1 are shown separated.

[0014] Figure 3 yes Figure 2 Exploded assembly view of the tip and adapter assembly and locking assembly.

[0015] Figure 4 yes Figure 3 , showing the block and spring portions of the locking assembly inserted into corresponding holes in the nose portion of the adapter. The tip is also shown inserted over the nose of the adapter.

[0016] Figure 5 Is set in Figure 4 An enlarged side view of the block and spring in the hole of the nose portion of the adapter.

[0017] Figure 6 is a side cross-sectional view illustrating the insertion of the locking pin into the adapter after the tip is inserted over the nose of the adapter. Figure 4 blocks, tips and adapters.

[0018] Figure 7 are shown separately Figure 5 A perspective view of the block and spring.

[0019] Figure 8 yes Figure 7 A perspective view of the block and spring depicting the projection of the spring extending into the center hole of the block.

[0020] Fig. 9 yes Figure 8 Exploded assembly diagram of a cross section of the block and spring.

[0021] Fig.10 After assembly Fig. 9 Cross-sectional view of the block and spring.

[0022] Fig.11 yes Fig.10 0026] Figure 2 is a side view of the block, more clearly illustrating the flared portion of the perimeter of the block.

[0023] Fig.12 are shown separately Figures 7 to 10 Perspective view of a spring.

[0024] Fig.13 yes Fig.12 Side view of the spring.

[0025] Fig.14 The pin of the illustrated locking assembly is inserted into the hole of the tip and the hole of the block. The bevel of the pin is aligned with the spring circumference of the block to begin compressing the spring.

[0026] Fig.15 shows the spring compression after axial insertion has begun. Fig.14 The pin.

[0027] Fig.16 Illustrated Fig.15 The pin is then pushed into the spring, and the inclined surface of the pin begins to compress the spring.

[0028] Fig.17 Depicts the complete axial insertion. Fig.16 The pin.

[0029] Fig.18 Shows Fig.17 The spring is further compressed by the tapered slope of the pin.

[0030] Fig.19 Shown in locked configuration Fig.18 The pin has been fully rotated clockwise.

[0031] Fig. 20 shows the locked position Fig.19 The spring has fallen into its side recess.

[0032] Fig.21 Depicts the tip after contacting the stopper surface of a fully locked tip. Fig. 20 The pin of the wing.

[0033] Fig. 22is a side cross-sectional view of the spring showing the notch engaging the pin, and a tab disposed in an axial or lateral undercut at the tip, preventing the pin from being removed without intentionally rotating the pin in a counterclockwise direction.

[0034] Fig.23 yes Fig. 22 A front perspective view of a pin showing its polygonal drive hole.

[0035] Fig.24 yes Fig.23 A rear perspective view of the pin of , showing the relative circumferential timing of its ramps with respect to its flanking tabs.

[0036] Fig.25 Shows Fig.24 A pin showing the relative circumferential timing of the bevel of the pin with respect to the side notch.

[0037] Fig.26 is a perspective view of a tip and adapter assembly employing a retention mechanism including a threaded locking pin and a threaded retention block according to another embodiment of the present disclosure.

[0038] Fig. 27 yes Fig.26 A perspective view of the tip of the tip adapter assembly of the invention with the adapter and retention mechanism removed. Unlike previous embodiments of the present disclosure, the retention mechanism receiving hole is not threaded. Instead, the hole is configured to receive a circular portion of a locking pin.

[0039] Fig.28 yes Fig.26 An alternative perspective view of the tip and retention mechanism of the , with the adapter removed, more clearly showing the retention block.

[0040] Fig.29 yes Fig.26 A perspective view of the adapter and retention mechanism of the XT-5000 with the tip removed for enhanced clarity. The pry die slots for removing the threaded retention block and the rounded portion of the threaded locking pin can be seen.

[0041] Fig.30 yes Fig.29 A perspective view of an adapter with the retention mechanism removed to more clearly illustrate the retention block receiving hole and pry die slot of the adapter.

[0042] Fig.31 are shown separately Fig.29 The side pry notches shown can be used with the pry slots of the adapter to remove the threaded retention block from the adapter.

[0043] Fig.32 Shows Fig.31The retention mechanism has a threaded locking pin and C-shaped spring, without a threaded retention block.

[0044] Fig.33 yes Fig.32 A rear perspective view of the C-shaped spring and threaded locking pin, more fully showing the threads of the pin.

[0045] Fig.34 are shown separately Fig.31 A perspective view of a thread retention block. A C-shaped spring is shown installed in a recess in the block.

[0046] Fig.35 yes Fig.34 An alternative perspective view of the thread retaining block with the C-spring removed.

[0047] Fig.36 are shown separately Fig.34 Top oriented perspective view of a C-shaped spring.

[0048] Fig.37 yes Fig.36 Bottom-oriented perspective view of a C-shaped spring.

[0049] Fig.38 is along Fig.26 A cross-sectional view of the tip and adapter assembly and retention mechanism of the figure taken along line 38-38. The threaded locking pin is shown fully in the locked configuration.

[0050] Fig.39 is along Fig.26 A cross-sectional view of the tip and adapter assembly and retention mechanism of the figure taken along line 39-39. The C-spring shown is located in a recess in the threaded retention block, engaging the circumference of the threaded locking pin, providing frictional resistance to accidental rotation.

[0051] Fig.40 Demonstrates the implementation Fig.39 The assembly process begins with the assembly configuration shown. The C-shaped spring is compressed and then inserted into the recess of the threaded retaining block.

[0052] Fig.41 Depicted is a thread retaining block inserted into a recess of an adapter.

[0053] Fig.42 Depicts being slid to Fig.41 The tip on the nose of the adapter.

[0054] Fig.43 Shown are the threaded locking pins inserted into the holes of the tip and retention block.

[0055] Fig.44 Shown is a threaded locking pin contacting the threads of the retention block prior to rotation.

[0056] Fig.45 Shown after being rotated 45 degrees Fig.44 Threaded locking pin.

[0057] Fig.46 The threaded locking pin is shown after being rotated 180 degrees.

[0058] Fig.47 The locked configuration is shown after being rotated 225 degrees. Fig.42 The C-shaped spring is now located in the groove that is arranged close to the end of the threaded locking pin.

[0059] Fig.48 A retention mechanism with a threaded locking pin is shown removed from the adapter and tip after being rotated 45 degrees after being inserted into the hole of the retention block.

[0060] Fig.49 Further rotation (90 degrees) is illustrated, pulling the threaded pin axially further into the hole of the retaining block, causing the C-shaped spring to begin to expand.

[0061] Fig.50 It is shown that after the threaded locking pin has been rotated 135 degrees, the extension of the C-spring is almost complete.

[0062] Fig.51 Shown is the threaded locking pin after being rotated 180 degrees. The C-spring is fully extended.

[0063] Fig.52 Depicted is the threaded locking pin after being rotated 225 degrees. The threaded locking pin is fully pulled into the hole of the retaining block, and the C-shaped spring falls into the spring retaining hole disposed near the end of the threaded locking pin. The C-shaped spring now contacts the groove surface, providing circumferential friction that resists accidental rotation of the threaded locking pin. DETAILED DESCRIPTION

[0064] Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals are used throughout the accompanying drawings to represent the same or similar parts. In some cases, a reference numeral will be indicated in this specification and the accompanying drawings will show the reference numeral followed by a letter, such as 100a, 100b, or a superscript indicator such as 100', 100", etc. It should be understood that the use of a letter or superscript immediately following the reference numeral indicates that these features are of similar shape and have similar functions, such as is often the case when geometric shapes are mirrored about a plane of symmetry. For ease of explanation in this specification, letters or superscripts will generally not be included herein but may be shown in the accompanying drawings to indicate repetition of features discussed within the written specification.

[0065] A work tool assembly using a tip or any type of wear-resistant member that can employ a locking assembly constructed according to various embodiments of the present disclosure will now be discussed. In general, a locking assembly for attaching a wear-resistant member such as a tip to a base such as an adapter is provided, the locking assembly comprising a retaining block having a spring attached to the retaining block, the retaining block fitting into a hole in the base. A locking pin is also provided that fits into the hole of the wear-resistant member and the hole of the retaining block, thereby retaining the wear-resistant member on the base. The locking pin engages with the spring, which prevents accidental rotation of the locking pin, causing the locking pin to become stuck in the hole of the wear-resistant member, preventing the locking pin from being accidentally removed.

[0066] from Figure 1 Initially, an example of a work tool assembly 100 may take the form of a bucket assembly 100' that may be used with a wheel loader and includes a housing 101 defining an opening 102 that communicates with a generally enclosed interior. Figure 1 Beginning at the rear of the illustrated bucket assembly 100, the bucket assembly 100 includes a curved shell profile 104 that is attached to a rear wall 106 at the top end of the shell 104. The other end of the shell is attached to a bottom plate 108 of the assembly 100. A top plate 110 is attached to the top end of the rear wall 106. The top plate 110 transitions to a spill guard 112 that is designed to convey material into the interior of the bucket and prevent material from spilling out of the bucket. Ribs 118 are provided attached to the top plate 110 and the spill guard 112 to provide enhanced strength. Two substantially flat end plates 114 are attached to the spill guard 112, the top plate 110, the rear wall 106, the bottom plate 108, and the side edges of the shell 104.

[0067] A side edge assembly 115 is attached to each end plate 114, while a front edge assembly 116 is attached to the front edge of the bottom plate 108 of the bucket assembly 100. The front edge assembly 116 includes a base edge 117 attached to the bottom plate 108, a plurality of center adapters 118 attached to the base edge 117, and a plurality of tips 200 (which may also be referred to as tools, teeth, wear members, etc.), wherein each of the plurality of tips 200 is attached to one of the plurality of center adapters 118. Furthermore, two corner adapters 120 are also attached to the base edge and the side edge 122 of the bucket assembly 100'. The tips 200 may also be attached to the corner adapters 120.

[0068] Furthermore, a plurality of base edge protectors 124 are provided, each of which is located between the center adapters 120 and between the center adapter 120 and the corner adapters 120. Side edge protectors 126 are also provided and attached to the side edges 122 proximate the corner adapters 120.

[0069] It should be understood that the work tool assembly may take other forms besides a bucket assembly, including a rake assembly, a shear assembly, etc. In addition, variously configured buckets intended for use with excavators may also use various embodiments of tips, retention mechanisms, adapters, springs, spring retention blocks, retention blocks with spring subassemblies, adapter subassemblies, and tip and adapter assemblies, etc., as will be discussed herein.

[0070] Now refer to Figures 2 to 4 , Figure 6 and Figures 14 to 22 , describing a tip and adapter assembly constructed in accordance with an embodiment of the present disclosure.

[0071] from Figures 2 to 4 Initially, the tip and adapter assembly 150 may include a tip 200 (which may be more generally referred to as a wear-resistant component 200a, which may take different forms, including an edge protector, a shield, a cutting edge, a clamping pad, etc.), which includes a body that defines an assembly direction 202, a vertical axis 204 perpendicular to the assembly direction 202, and a lateral axis 206 perpendicular to the vertical axis 204 and the assembly direction 202.

[0072] The body of the tip 200 may include a forward working portion 208 disposed along the assembly direction 202 including a closed end 210 and a rear attachment portion 212 disposed along the assembly direction 202 including an open end 214 .

[0073] The rear attachment portion 212 can define an exterior surface 216 and an adapter nose receiving recess 218 extending from the open end 214 in the assembly direction 202. A retention mechanism receiving aperture 220 communicates with the adapter nose receiving recess 218 and the exterior surface 216. A first flange 222 can be disposed in the aperture, the first flange defining a first lateral undercut 224 (see also FIG. Figure 6 ) for the purpose of accommodating a portion of a reservation institution in a manner discussed later in this article.

[0074] Reference now Figures 2 to 6, the assembly 150 may also include an adapter 300 (or may be more generally referred to as a base 300a) that includes a body that includes a nose portion 302 that is configured to fit within the adapter nose receiving recess 218 of the tip 200. The body (or more specifically the nose portion 302) of the adapter 300 includes an outer surface 304 that defines a polygonal retaining block receiving aperture 306 and a circular pin receiving aperture 308 that communicates with the polygonal retaining block receiving aperture 306.

[0075] More specifically, if Figure 6 Most clearly shown, the adapter 300 may have a polygonal retaining block receiving hole 306 that is at least partially formed as a counterbore 310 having a circular pin receiving hole 308 at its bottom. The circular pin receiving hole is blind and at least partially tapered, but this may not be the case in other embodiments of the present disclosure. For example, the hole may be a through hole extending through the nose of the adapter, or may have another shape such as a square, provided that there is a gap between the locking pin 500 and the wall of the hole to allow the locking pin 500 to rotate, etc.

[0076] Focus Figure 5 , the polygonal retaining block receiving hole 308 may define a perimeter 311 having an octagonal configuration. More specifically, the octagonal configuration includes a first side 312 (or surface), a second side 312a (or surface) parallel to the first side 312, a third side 314 (or surface) perpendicular to the first side 312, and a fourth side 314a (or surface) perpendicular to the second side 312a.

[0077] In addition, the first angled surface 315 is inclined relative to the first side 312, the second angled surface 316 is inclined relative to the second side 312a, the third angled surface 316a is inclined relative to the third side 314, and the fourth angled surface 316b is inclined relative to the fourth side 314a. Figure 5 As shown, the first angled surface 315 is configured differently than the second angled surface 316, the third angled surface 316a, and the fourth angled surface 316b. For example, the first angled surface 315 has more surface area and is at a different angle. This feature can provide a foolproof function so that the retention block 400 (so called because it retains the spring 600 in place) and the angular orientation of the spring 600 are correct.

[0078] refer to Figure 5 and Fig.10 Both, retaining block 400 also has matching or complementary sides and surfaces in shape to (at least partially) fit in the hole. More specifically, the retaining block has a first side 412 that fits with a corresponding portion of the hole (i.e., 312, etc.), as well as a second side 412a, a third side 414a, and a fourth side 414a.

[0079] There are at least two reasons why these surfaces mate or contact their counterparts. First, this contact can help provide a slight press fit between the retaining block and the adapter to help retain the retaining block in the bore of the adapter for ease of assembly. To this end, both sets of surfaces (the surfaces of the retaining block and the surfaces of the bore of the adapter) are beveled or tapered by 0.5 degrees (see Figure 6 and Fig.11 ) or greater so that when the retaining block or spring needs to be replaced, the retaining block can be removed from the adapter. Secondly, this contact helps prevent undesired tilting or rotation of the retaining block or spring during use when the locking pin is rotated.

[0080] In addition, by Figure 5 and Fig.10 When viewed together, retaining block 400 includes: a first angled surface 415 that is spaced apart from a corresponding portion of the hole (i.e., 315, etc.) to provide clearance; and a second angled surface 416, a third angled surface 416a, and a fourth angled surface 416b (also spaced apart from their corresponding portions). Thus, when disposed in the polygonal retaining block receiving hole, the retaining block contacts the first side, the second side, the third side, and the fourth side, but for various reasons (including to provide an angular relief groove), the retaining block does not contact the first angled surface, the second angled surface, the third angled surface, and the fourth angled surface.

[0081] Check Fig. 9 , retaining block 400 defines a center pin receiving hole 402 and a spring receiving hole 404, which extends from the center pin receiving hole 402 toward the exterior or perimeter of retaining block 400. After assembly, spring 600 can be disposed in center pin receiving hole 402 and spring receiving hole 404 (see Fig.10 The locking pin 500 may be disposed in the center pin receiving hole 402 (see, for example, Fig. 22 ), and the locking pin 500 may define a recess 502 for receiving the spring 600.

[0082] exist Figure 4 As can be seen in FIG. 1 , the tip 200 may further include a first ejector ramp 226 that extends circumferentially from the first tab receiving slot 228 to the exterior of the first flange 222. The first flange 222 may extend circumferentially from the first stop 230 to the first tab receiving slot 228 that is circumferentially spaced from the first stop 230 (see FIG. 1 ). Fig.21 ). The slot 228 may be exposed to the exterior of the wear-resistant member (eg, the tip 200) and defined by the second flange 232 (see also Fig. 22), the second flange is axially spaced inwardly from the first flange 222 toward the adapter nose receiving recess 228. The nose receiving recess may be defined by an interior surface without grooves. This may not be the case in other embodiments of the present disclosure.

[0083] Check Fig.21 and Fig. 22 , the locking pin 500 may include: a first fin 504, which is disposed circumferentially adjacent to the first stop 230 and laterally disposed in the first lateral undercut 224; and a second fin 506, which is circumferentially spaced from the first fin 504 and is disposed axially adjacent to the second flange 232 in the first fin receiving slot 228. In addition, the locking pin 500 defines a notch 502, which is axially (along the rotational axis 238) spaced from the first fin 502 and the second fin 506, toward the adapter nose receiving pocket 218 of the tip 200. The notch is also diametrically opposite the ramp surface of the locking pin, as will be discussed later herein.

[0084] As in Figure 23 to Figure 25 As best seen in FIG. 5 , the locking pin 500 includes a cylindrical surface 508 from which the first fin 504 and the second fin 506 radially extend. The locking pin 500 includes a conical surface 510 defining the recess 502. The second fin 506 may be disposed axially closer to the outer surface of the wear-resistant member than the first fin 504, such as Fig. 20 and Fig.21 shown.

[0085] During assembly, the locking pin 500 may be inserted into the retention mechanism receiving hole 220 of the tip 200, such as Fig.14 As shown, until the first fin 504 of the locking pin 500 is located in the first fin receiving slot 228 at the tip and contacts the second flange 232, as shown in FIG. Fig.17 The locking pin 500 is then rotated clockwise until the first wing 504 is hidden or caught under the first flange 222 in the undercut 224, as shown. Fig.19 shown.

[0086] As rotation occurs, the ramp surface 512 (see also Fig.23 ) pulls the locking pin 500 axially further into the central pin receiving hole 402 of the retaining block 400 and the circular pin receiving hole 308 of the adapter 300. At this point, the second tab 506 moves into the first tab receiving slot 228. In addition, the rotation causes the spring 600 to engage the flat surface 514 of the notch 502 of the locking pin 500, holding the locking pin 500 in the locked configuration (see Fig. 22). It should be noted that the first stop 230 prevents the locking pin from rotating too far in the clockwise direction. Now, since the first tab is trapped in the undercut formed by the first flange, the locking pin 500 cannot be removed axially, and the tip cannot be removed from the adapter unless the pin is rotated a sufficient amount in the counterclockwise direction.

[0087] Now refer to Figures 2 to 4 Discussion is made of a wear member 200a that may be provided as a replacement part or retrofit in the field.

[0088] The wear resistant component 200a may have a body defining a longitudinal axis (eg, may be the same as the assembly direction 202 ), a vertical axis 204 perpendicular to the longitudinal axis, and a transverse axis 206 perpendicular to the vertical axis 204 and the longitudinal axis.

[0089] The body may include a forward wear portion 208a disposed along the longitudinal axis (see assembly direction 202 ) and a rear attachment portion 212 disposed along the longitudinal axis including an open end 214 .

[0090] The rear attachment portion 212 may have an exterior surface 216 having an adapter nose receiving recess 218 extending longitudinally from the open end 214, and a retention mechanism receiving aperture 220 extending through the body from the exterior surface 216 to the adapter nose receiving recess 218. A first flange 222 (which may also be referred to as a rib) may define a first transverse undercut 224 in the retention mechanism receiving aperture 220 in a manner previously described herein.

[0091] exist Fig.14 In the embodiment, the retention mechanism receiving hole 220 can define an axis of rotation 238, a surface of revolution (e.g., see 234, which can be cylindrical or slightly conical, etc.), and a circumferential direction 236. Figure 4 and Fig.21 As best seen in the drawings, the first flange 222 can extend circumferentially from the first stop 230 to a first fin receiving slot 228 (e.g., can also be referred to as a fin inlet slot because it is exposed to the exterior of the wear member), which is circumferentially spaced from the first stop 230. The first fin receiving slot 228 is also axially defined or bounded by a second flange 232, which is axially spaced from the first flange 222 inwardly toward the adapter nose receiving recess 218 (see also FIG. Fig. 22 ) (may also be referred to as the base protrusion receiving recess).

[0092] exist Fig.15 and Fig.17In the embodiment of the present invention, a first ejector ramp 242 may be provided that extends circumferentially from the first tab receiving slot 228 opposite the first flange 222 toward the exterior thereof. Once the user wishes to remove the wear member, the user may rotate the locking pin 500 until its second tab 506 slides upwardly over the ejector ramp 226, which provides a prying force that helps to slightly loosen the wear member from the adapter or base, while also ejecting or forcing the locking pin axially away from the retaining block 400 and the spring 600.

[0093] The locking pin 500 can then be removed from the assembly, allowing the tip or other wear member to be removed from the adapter or base, since the first tab 504 is no longer captured in the undercut formed by the first flange, but is circumferentially disposed in the first tab receiving slot 228 axially adjacent the second flange 22a. The ejector ramp feature may be omitted in other embodiments of the present disclosure.

[0094] As previously referenced in this article Fig.21 As mentioned, the locking pin 500 may include a first tab 504 (also referred to as a first wing) that is circumferentially disposed adjacent to the first stop 230 of the tip or wear member and is laterally or axially disposed in the first lateral undercut 224 when in the locked configuration. At the same time, a second tab 506 (also referred to as a second wing) is circumferentially spaced from the first tab and is disposed axially or laterally adjacent to the second flange 222a of the first tab receiving slot 228.

[0095] As in Fig. 22 As best seen in FIG. 1 , the locking pin 500 may define a notch 502 or other spring engagement feature (e.g., which may be a slot or simply a flat surface, etc.) axially spaced from the first and second tabs 504, 506 toward the adapter nose receiving pocket 218 of the tip 200 or other wear member. The locking pin 500 may include a cylindrical surface 508 (i.e., a surface having a draft angle of less than 2.0 degrees or no draft angle at all) from which the first and second tabs 504, 506 extend radially.

[0096] In another aspect, the locking pin 500 may further include a conical surface 510 (ie, the surface has a draft angle of 2.0 degrees or greater) defining the recess 502. This facilitates ejection and removal of the locking pin from the assembly. Fig.21 As shown, the second fin 506 may be disposed axially closer to the outer surface of the wear-resistant component 200 a than the first fin 504 .

[0097] Unlike some prior designs, the interior surface of the adapter nose receiving pocket does not have a groove for receiving a retention tab or the like of the adapter or base. Likewise, its exterior surface may not have ears for receiving a hole and a retention mechanism that may be disposed therein. This may not be the case for other embodiments of the present disclosure.

[0098] Now we will continue to refer to Figures 2 to 4 Adapter 300 (also referred to as base 300a) is described as being usable as a replacement part or retrofit in the field.

[0099] The adapter 300 may include a body having an outer surface (eg, see Figure 4 The nose portion 302 has an outer surface 304 in the middle, and the nose portion defines a polygonal retaining block receiving hole 306 having a base surface 318 (see Figure 6 ) and a circular pin receiving hole 308, which extends from a base surface 318 (which can be flat).

[0100] As mentioned earlier herein, the body may not have a lug or any protrusion extending from the outer surface or outer layer surface, or at least not a lug or any protrusion close to or immediately adjacent to the hole (not forming a boundary of the hole). More specifically, the body may not have a lug or any protrusion extending from the outer surface adjacent to the circular retention mechanism receiving hole 306, making the design easier to manufacture and less complicated.

[0101] As mentioned earlier in this article, and in Figure 5 As best seen in FIG. 3 , the polygonal retaining block receiving aperture 306 may be asymmetrical about a plane 320 containing the rotational axis 332, and the circular pin receiving aperture 308 may be radially offset from the perimeter 311 of the polygonal retaining block receiving aperture 306 by a minimum dimension 322 in a plane coextensive with the base surface 318 (see FIG. 3 ). Figure 6 ).

[0102] In some embodiments of the present disclosure, Figure 6 As shown, the minimum dimension 322 may range from 0.0 mm to 25.0 mm or to 10.0 mm. In addition, the circular pin receiving hole 308 may define a maximum diameter 326 that may range from 4.0 mm to 40.0 mm or from 10.0 mm to 50.0 mm. In addition, the polygonal retaining block receiving hole 306 may define a first axial depth 328 that ranges from 15.0 mm to 60.0 mm or from 20.0 mm to 150.0 mm, while the circular pin receiving hole 308 defines a second axial depth 330 that is less than the first axial depth (may range from 3.0 mm to 25.0 mm or from 10.0 mm to 50.0 mm). In other embodiments of the present disclosure, other size ranges are possible.

[0103] Check Fig. 22 , the circular pin receiving hole 308 may define an axis of rotation 332, and the polygonal retaining block receiving hole 306 may be centered on the axis of rotation 332. This may not be the case for other embodiments of the present disclosure. The counterbore 310 includes a non-revolutionary surface (i.e., a perimeter 311 of the polygonal retaining block receiving hole, which may include one or more planar surfaces, or one or more valleys), and a surface of revolution 338 (e.g., which may be a cylindrical surface or a conical surface) extending below the non-revolutionary surface. The surface of revolution 338 defines a radial direction 340, and the surface of revolution is radially inwardly offset from the non-revolutionary surface.

[0104] Re-reference Figure 3 , the adapter 300 may also include an attachment portion 333 extending from the nose portion 302 (or throat portion 334), which may include one or two legs 336, 336a or straps. Other methods of attaching the adapter or base to a work tool (such as a bucket) may be used in other embodiments of the present disclosure.

[0105] In other words, base 300a according to embodiments of the present disclosure may include a body including: a nose portion 302 having an outer surface (e.g., outer surface 304) defining an at least partially non-circular retention block receiving aperture thereat (e.g., see Figure 5 306), the retaining block receiving hole having a seating surface 318 spaced apart from the outer surface (see Figure 6 ); and a circular pin receiving hole (e.g., see 308) extending from the base surface 318. More specifically, the circular pin receiving hole extends from the base surface to the bottom end 342. This may not be the case for other embodiments of the present disclosure.

[0106] Next, various embodiments of a retention mechanism 160 or locking assembly, which may include a locking pin, a retention block, and a spring, will be discussed.

[0107] from Figure 23 to Figure 25 Initially, the locking pin 500 of the retention mechanism may include a drive portion 516 and a spring engagement portion 518 extending axially from the drive portion. The drive portion 516 may include a polygonal hole 520 and a surface of revolution (e.g., a cylindrical surface 508 or a conical surface) defining a rotation axis 522, a radial direction 524, and a circumferential direction 526. The spring engagement portion 518 may include a circumferential surface 528 having at least one recess (e.g., see notch 502) disposed thereon.

[0108] The polygonal hole 520 may be spaced apart from the recess by a predetermined axial distance 530 (see Fig. 22). In addition, a first lateral wing (e.g., see first wing 504) can extend radially and circumferentially from the drive portion 516 at least partially axially aligned with the polygonal hole 520. Specifically, the locking pin defines a first axial end 532, the polygonal hole 520 extends from the first axial end 532, and the first lateral wing (e.g., see first wing 504) can be disposed axially away from the first axial end 532 by a first axial distance 534.

[0109] In addition, if Fig.23 As shown, the first side wing piece defines a circumferential extension 536, a radial dimension 538, and an axial thickness 540 that is less than at least one or both of the circumferential extension 536 and the radial dimension 538. A second side wing piece (e.g., see second wing piece 506, which may have dimension ratios similar to those of the first side wing piece) may extend radially from the locking pin 500 and may be disposed at the first axial end 532.

[0110] The locking pin 500 may also include a ramp surface 512 (which may be located on diametrically opposite sides of the recess 502) that extends circumferentially and axially from the first wing tab 504 to the second wing tab 506 to help position the pin during use as previously described. In addition, the locking pin 500 may define a second axial end 542, such as at Fig.24 and Fig.25 544, and may also include a blend 544, such as a radius connecting the circumferential surface 528 to the second axial end 542. The blend 544 may help assist in the installation of the locking pin 500 and the compression of the spring 600 during installation. To this end, a ramp portion 545 may also be provided, extending circumferentially from the blend and axially from the circumferential surface. In some embodiments, the ramp portion may include a conical surface having a greater draft angle (higher draft angle) than the conical surface 510 extending completely circumferentially around the pin. In such cases, the blend may be smaller or even eliminated.

[0111] As mentioned previously herein, the peripheral surface 528 is beveled (which may be less than the slope of the ramp portion), and as Fig.23 The depicted chiseled notch 546 (e.g., forming a chiseled edge 548) can be disposed circumferentially between the first and second side wing pieces. This feature can help break up the filler material during counterclockwise rotation of the locking pin, but can be omitted in other embodiments of the present disclosure. The ramp portion 545 can be at least partially aligned circumferentially with the first or second side wing piece, such as Fig.25 In addition, the ramp portion may be axially out of phase with the depression on the circumferential surface by a predetermined amount, such as 60.0 degrees to 120.0 degrees (e.g., approximately 90.0 degrees, as shown in FIG. Fig.25 shown).

[0112] exist Figures 7 to 11 In the embodiment, the retaining block 400 includes an outer perimeter 406 having a non-revolving surface (e.g., such as Fig.10 The faceted surfaces shown, including first side 412, second side 412a, third side 414, fourth side 414a, etc.), a pin receiving hole (e.g., center pin receiving hole 402), which defines an inner surface 418 that is offset inwardly (e.g., radially inwardly) from the non-revolving surface. As shown, the inner surface can be smooth, but in other embodiments can be threaded to allow a fastener to be used as a tool to insert or remove the block from the adapter. In addition, the inner surface 418 can be tapered or beveled at a greater angle than the non-revolving surface (e.g., 2.0 degrees or more compared to less than 2.0 degrees). The added bevel can help allow the locking pin to be dislodged from the retention block without dislodging the retention block from the adapter.

[0113] In addition, the spring receiving hole 404 may extend from the non-revolving surface to the inner surface. The spring receiving hole 404 may include a T-shape. For the spring receiving hole, other shapes are possible in other embodiments of the present disclosure.

[0114] In addition, if Fig.10 As shown, a spring 600 having a pair of attachment flanges 602, 602a can be attached to the retaining block 400. At least one of the pair of attachment flanges 602, 602a can be brazed to one of the pair of spring attachment surfaces 420, 420a. Once attached, the spring 600 can extend through the spring receiving hole (e.g., through the central groove 421 spanned by the spring attachment surface) into the pin receiving hole (e.g., see 402), through the inner surface 418 of the pin receiving hole. During the brazing process, a pair of protrusions or dimples to be discussed can help provide a capillary action to provide a secure joint between the spring and the retaining block.

[0115] As in Fig.11 As best seen in the figure, the non-revolved surface includes a flared portion 422 that is disposed axially adjacent to the spring receiving hole 404 and has a greater draft angle (e.g., 5.0 degrees or greater) than the remainder of the non-revolved surface (e.g., less than 2.0 degrees). The flared portion can help prevent material from filling the spring receiving hole. Additionally, the flared portion can allow a pry bar or other tool to assist in prying out the retaining block of the adapter because the retaining block is adjacent to the prying slot 344 of the adapter (see Figure 4 ). This feature may be omitted in other embodiments of the present disclosure.

[0116] Follow now Fig.12 and Fig.13, the spring 600 may include a top platform member 604 (so called because it forms the farthest portion of the spring relative to the attachment flanges 602, 602a), a first undulating side member 606 extending from the top platform member, a second undulating side member 606a extending from the top platform surface, and a first attachment flange 602 extending from the first undulating side member 606 and a second attachment flange 602 extending from the second undulating side member 606a. These flanges may be omitted in other embodiments of the present disclosure.

[0117] The first attachment flange 602 may include a first attachment surface 608 having a first protrusion 610 (e.g., a shell or hollow dome), and a second attachment flange 602a having a second attachment surface 608a having a second protrusion 610a. It should be noted that when viewed from the back, these protrusions look like dimples, such as Figure 7 As shown, the attachment surfaces may be parallel and / or coplanar with each other, and may also be parallel to the top platform member (e.g., its contact surface 618, so called because it rests on the locking pin). This may not be the case in other embodiments of the present disclosure.

[0118] exist Fig.13 As can be seen in the figure, the first undulating side member 606 may include a first peak 612 adjacent to the top platform member 604 and a first valley 614 adjacent to the first attachment flange 602. That is, the first peak is closer to the top platform member than the first attachment flange, etc. The spring defines one or more planes of symmetry 616, 616a (which may not be the case for other embodiments). In other embodiments of the present disclosure, other configurations are possible. The spring may be made of spring steel and formed by stamping and folding, such as by a progressive die or the like.

[0119] In addition, it should be noted that any size, angle, surface area and / or configuration of the various features may be changed as desired or needed, including those sizes, angles, surface areas and / or configurations not specifically mentioned herein. Although not specifically discussed, blending such as fillets is shown to connect various surfaces. These may be omitted in other embodiments, and it should be understood that their presence may sometimes be ignored when reading this specification unless specifically mentioned.

[0120] Industrial Applicability

[0121] Indeed, machines, work tool assemblies, tips, wear members, adapters, bases, adapter assemblies, tip and adapter assemblies, springs, locking pins, retaining blocks, retaining mechanisms and / or any combination of these various components and parts may be manufactured, purchased, or sold to retrofit machines or work tool assemblies in the field in an aftermarket environment, or alternatively, may be manufactured, purchased, sold, or otherwise obtained in an OEM (original equipment manufacturer) environment.

[0122] Any of the above components may be made of any suitable material, including iron, gray cast iron, steel, spring steel, plastic, rubber, foam, etc.

[0123] A retainer assembly for a tip of a ground engaging tool (GET) or other wear-resistant component is disclosed. The retainer assembly may include a tapered pin and a retaining block including a spring disposed therein. The retaining block may be disposed inside an adapter recess and may include a flat contact surface configured to engage with the adapter recess, thereby maximizing the contact area and reducing adapter wear. In operation, the tip is slid onto the adapter and the tapered pin is inserted into a slot or opening in the tip and the retaining block. Next, the tapered pin is rotated clockwise, thereby locking the tip and the adapter. In addition, the tapered pin is configured to interact with the spring of the retaining block, thereby providing an anti-rotation feature. The pin is then rotated in the opposite direction so that the bevel feature of the tip engages with the pin (or vice versa), thereby ejecting the pin from the tip of the GET. After the pin is removed, the tip can be removed from the adapter.

[0124] The spring may have formed a punch that allows capillary action when brazed to the block, resulting in a stronger joint. Symmetrical bends in the side legs, such as at their rear, can help provide linear motion during compression of the spring. The flat front surface of the spring interacts with the pin to create resistance to rotation of the pin.

[0125] The pin may have a square drive hole for rotating the pin from an unlocked configuration to a locked configuration, or vice versa. The flat surface (which may be recessed into a notch) may interact with the spring to help create resistance to rotation of the pin. The rounding of the bottom of the pin may help reduce stress, while the taper of the bottom of the pin may help eject the pin as it rotates.

[0126] When the pin is rotated to the locked position, the user may get tactile, visual and / or audible feedback that the tip or other wear member is locked to the adapter or base. The tactile feedback may be the feeling of the spring snapping into place in the notch of the pin and / or the first wing hitting a stop of the tip. The visual feedback may be the fact that the first wing is no longer visible. The audible feedback may be a "click" sound when the spring snaps into the notch.

[0127] In some embodiments, the block and spring will be arranged with the spring already attached to the block. In addition, for some embodiments of the present disclosure, the threaded or beveled features of the pin and tip are close to or located on the outside of the assembly, making it easier to clean or remove filler materials that may interfere with the function of the retention mechanism.

[0128] It should be understood that the foregoing description provides examples of disclosed components and techniques. However, it is contemplated that other embodiments of the present disclosure may differ in detail from the foregoing examples. All references to the present disclosure or examples thereof are intended to refer to the specific examples discussed at that point and are not intended to imply any limitation on the scope of the present disclosure more generally. All language regarding distinction and disparagement of certain features is intended to lack preference for those features, but unless otherwise indicated, does not completely exclude them from the scope of the present disclosure.

[0129] For example, Figure 26 to Figure 52 The embodiment of the tip and adapter assembly 150a and the retention mechanism 160a disclosed in Figures 1 to 23 The embodiments discussed are similar or identical.

[0130] like Fig.30 , Fig.38 and Fig.41 As shown, the polygonal retaining block receiving hole 306a of the adapter 300b does not have a bottom pin receiving hole (see Figure 6 308 in the figure), and the wear-resistant member 200b or the tip has a retention mechanism receiving hole 220a, which does not have threads or other undercuts such as those previously described herein (see also Fig. 27 ).

[0131] As in Fig.29 and Fig.30 As best seen in FIG. 1 , this embodiment includes a prying die slot 344 extending from one side of the polygonal retaining block receiving aperture 306a that can communicate with an associated feature (see side slot 424 of retaining block 400a, as shown in FIG. Fig.31 and Fig.35 ). These features can be used to help pry the retaining block out of the adapter if maintenance, etc., is required. The retaining block can also have flared portions in addition to or in place of the side slots to aid in removal. Any of these prying features can be omitted in other embodiments of the present disclosure.

[0132] Different from what has been described above, Fig.34 , Fig.35 and Fig.38The illustrated retention block 400a may define a threaded pin receiving bore 426 having a radial direction 428, a circumferential direction 430, and an axis of rotation 432. A spring receiving recess 434 may be disposed in the threaded pin receiving bore 426.

[0133] The C-shaped spring 700 can be disposed in the threaded pin receiving hole 426 and the spring receiving recess 434. In addition, the threaded locking pin 800 can be disposed in the threaded pin receiving hole 426 and define a spring receiving groove 802 for receiving the C-shaped spring 700, such as Fig.32 , Fig.33 and Fig.38 shown.

[0134] Check Fig.38 and Fig.39 , the C-shaped spring 700 can define an inner diameter 702, and the spring receiving groove 802 can define an outer diameter 804 that is larger than the inner diameter 702. This can provide circumferential friction between the C-shaped spring and the threaded locking pin, thereby reducing the possibility of unnecessary rotation when the threaded locking pin is fully inserted and rotated into the retention block.

[0135] In addition, the spring receiving recess 434 can define a C-shape having a first circumferential end surface 436 and a second circumferential end surface 436a that are spaced apart from each other and slightly from the circumferential end of the C-shaped spring, thereby creating a slight gap 439. In addition, the outer circumferential surface 438 of the C-shape of the recess is radially spaced apart from the C-shaped spring 700, thereby providing a gap 440 therebetween. These gaps 439, 440 can allow the C-shaped spring to flex outwardly as the pin passes through the C-shaped spring and the retaining block, as shown in FIG. Figures 49 to 51 As shown, the circumferential rotation of the C-shaped spring is also restricted.

[0136] Now go to Fig.32 and Fig.33 , the threaded locking pin 800 of the retention mechanism 160a may include a drive portion 806, a threaded portion 808, and a spring engagement portion 810. More specifically, the drive portion may include a surface of revolution 812 (e.g., an outer circumferential surface, such as a cylindrical surface, a conical surface, etc.) defining a radial direction 814, a circumferential direction 816, and a rotation axis 818. The drive portion 806 may be axially spaced from the threaded portion 808, and the threaded portion 808 may be axially spaced from the spring engagement portion 810.

[0137] In certain embodiments of the present disclosure, the threaded portion 808 includes male threads 820, such as lead screw threads, or other types of threads extending 180 degrees or less around the axis of rotation 818. This may allow the threads to function properly, but are easily manufactured via a casting process.

[0138] In addition, the driving portion may define a polygonal surface 821 (which may be an internally flat surface) that is configured to be driven by a wrench or the like. The driving portion 806 may define a driving portion diameter 822, while the spring engaging portion 810 defines a spring engaging portion diameter 824 that is smaller than the driving portion diameter 822. For example, the diameter of the pin may be axially expanded outward at a location between the ends of the pin (see 826). The flaring and diameter difference may be omitted in other embodiments of the present disclosure.

[0139] More specifically, the drive portion 806 can be disposed at a first axial end 830 of the pin, and the spring engagement portion 810 can be disposed at a second axial end 832 of the pin. Thus, the threaded portion 808 can be disposed axially between the drive portion and the spring engagement portion.

[0140] Additionally, the spring engagement portion 810 may include a circumferential surface 828 extending axially from the spring engagement portion 810 to the drive portion 806. Additionally, the circumferential surface 828 may be beveled, as explained previously herein, to aid in loosening between the retention block and the pin, or vice versa, during disassembly.

[0141] As mentioned previously herein, the spring engaging portion 810 may define a spring receiving groove 802 or recess that is axially spaced from the first axial end 830. A first lead-in surface 834 may extend from the first axial end 830 to the spring receiving groove 802, while a second lead-in surface 836 may extend from the first lead-in surface 838 to the spring receiving groove 802. The first lead-in surface 834 may be configured to help deploy the C-shaped spring 700 during rotation and insertion, while the second lead-in surface 836 may be configured to help perform the reverse process of removing the pin. These lead-in surfaces may be configured to make it easier to insert the pin than to remove the pin from the C-shaped spring. This may not be the case for other embodiments of the present disclosure.

[0142] Check Fig.34 and Fig.35 The threaded retaining block 400a includes an outer perimeter 406a having a non-rotating surface (e.g., a flat surface such as 412), a pin receiving hole (e.g., a threaded pin receiving hole 426) defining an inner surface 442 offset inwardly from the non-rotating surface, and a spring receiving recess 434 disposed in or connected to the pin receiving hole.

[0143] The threaded pin receiving hole 426 may define a female thread 444, such as a lead screw thread as shown or some other type of thread. Fig.34 , Fig.35 and Fig.52As can be most clearly seen in the figure, the female thread 444 extends from the first axial end 446 toward the second axial end 448, terminating before reaching the second axial end 448, and the spring receiving recess 434 is axially arranged to be adjacent to the second axial end 448 while also axially spaced apart from the female thread 444.

[0144] This embodiment of the thread retention block has no flared portion because the C-shaped spring 700 is disposed inside the block, naturally protecting it.

[0145] Follow now Fig.36 and Fig.37 , the C-shaped spring 700 may include a pin-engaging inner circumferential surface 704 that defines a radial direction 706, a circumferential direction 708, and a pin insertion axis 710 (which may coincide with the axis of rotation once the pin is inserted into the retaining block). A first circumferential end surface 712 and a second circumferential end surface 712a may help define the C-shape of the spring. A first axial lead-in surface 714 may extend axially from the pin-engaging inner circumferential surface 704 to an outer circumferential surface 716, and circumferentially from the first circumferential end surface 712 to the second circumferential end surface 712a.

[0146] In addition, the C-shaped spring 700 can define a first axial end 718 and a second axial end 720. The first axial lead-in surface 714 can be disposed at the first axial end 718, while a sharp corner 722 (i.e., no lead-in surface) is disposed at the second axial end 720 between the pin engagement inner circumferential surface 704 and the annular axial end surface 724.

[0147] The C-shaped spring 700 may also define a spring circumferential extension 726 that is less than 360.0 degrees but greater than 180.0 degrees measured from the first circumferential end surface 712 to the second circumferential end surface 712a. More specifically, the spring circumferential extension 726 may range from less than 270.0 degrees but greater than 180.0 degrees (e.g., approximately 260.0 degrees). In addition, in some embodiments of the present disclosure, the C-shaped spring 700 may define an axial thickness 728 that ranges from 0.5 mm to 3.0 mm measured from the first axial end 718 to the second axial end 720. For certain embodiments of the present disclosure, these dimensions may provide the necessary size, strength, spring constant, and elasticity. The ratio range of any of these dimensions may be 20% different from the median of the size range. These ratios may allow the design to be scaled up or down depending on the application.

[0148] Figure 26 to Figure 52 One of the differences between the embodiment of and earlier embodiments is that all complex geometric features have been relocated from the tip or adapter into smaller components (blocks, springs, pins). This can make the large tip and adapter castings simpler for ease of manufacturing and reduced cost.

[0149] Although the embodiments discussed herein show a single-sided locking arrangement, a double-sided locking arrangement is contemplated to be within the scope of the present disclosure.

[0150] Even in the locking groove, the circumferential spring clips mentioned herein may be under slight tension to minimize the "loose" feel of the system.

[0151] In some embodiments of the present disclosure, the locking pins described herein may be flush or recessed relative to the tip or wear member to help protect the pin from wear. This may not be the case for other embodiments of the present disclosure.

[0152] The spring clip of any of the embodiments discussed herein may be installed in a retaining block at the factory, similar to a snap ring. The spring clip may be retracted radially inward using snap ring pliers to reduce its outer diameter to place it in a groove in the retaining block, then the snap ring pliers are released and the spring clip expands into its receiving groove in the block. The end user may simply insert the block and spring / clip into the adapter as a complete assembly.

[0153] The locking pin for the later embodiment may bottom out in the adapter to provide the user with a sense that the system is locked. A click and vibration may also be heard when the spring clip drops into the groove of the locking pin.

[0154] For various embodiments of the present disclosure, the assembly process may include a retaining block / spring assembly step established at the supplier or at the factory. A snap ring tool will be used to compress the clip / spring inwardly and then align it with the appropriate corresponding groove on the block. When the snap ring tool is released, the spring clip will expand radially outward into the groove in the block. The clip / spring and block are now a separate assembly.

[0155] The adapter, base, or work tool may have a simple octagonal hole with a small bevel for casting. The second step of assembly (but the first step for the end user) may be to insert the block and clip / spring assembly into the hole on the adapter. The GET can then be completely slid over the adapter nose or work tool and the block and clip spring assembly. Next, the retention pin can be inserted into the hole in the GET until the threads on the retention pin engage with the threads on the block. A standard tool can then be inserted into the square drive portion to rotate the pin from 45 degrees to 360 degrees (depending on the design / application). As the pin rotates, it will penetrate deeper into the block. As the pin moves inward, it will eventually engage with the spring clip and expand radially outward. After the desired rotation, the threads of the pin or the bottom of the pin will reach a physical stop. At the same time, the spring clip will "snap" into the retention groove on the retainer pin. The user can hear and feel a click, and feel a physical stop to know that the system has been locked. Once locked, the GET is ready for use. Uninstallation is the exact opposite of the installation process. The block and spring / clip can be reused. However, if necessary, there are pry-out features on the block and / or adapter to facilitate removal.

[0156] As used herein, the articles "a" and "an" are intended to include one or more items and are used interchangeably with "one or more." Where only one item is intended, the term "one" or similar language is used. Furthermore, as used herein, the terms "having," "with," and the like are intended to be open-ended terms. Furthermore, the phrase "based on" is intended to mean "based, at least in part, on," unless expressly stated otherwise.

[0157] Recitation of ranges of values ​​herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein.

[0158] It will be apparent to those skilled in the art that various modifications and variations may be made to the embodiments of the apparatus and assembly methods discussed herein without departing from the scope or spirit of the invention. Other embodiments of the present disclosure will be apparent to those skilled in the art in view of the specification and practice of the various embodiments disclosed herein. For example, the construction and function of some apparatus may be different from that already described herein, and certain steps of any method may be omitted, performed in an order different from that specifically mentioned, or in some cases performed simultaneously or in sub-steps. In addition, certain aspects or features of the various embodiments may be changed or modified to produce further embodiments, and the features and aspects of the various embodiments may be added to or substituted for other features or aspects of other embodiments in order to provide yet further embodiments.

[0159] Accordingly, this disclosure includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law. Additionally, any combination of the above-described elements in all possible variations thereof is encompassed by the invention unless otherwise indicated herein or clearly contradicted by context.

Claims

1. A tip and adapter assembly (150), the tip and adapter assembly comprising: A tip (200) comprising a body defining an assembly direction (202), a vertical axis (204) perpendicular to the assembly direction (202), and a transverse axis (206) perpendicular to the vertical axis (204) and the assembly direction (202), the body comprising: a forward working portion (208) disposed along the assembly direction (202) and including a closed end (210); and a rear attachment portion (212) disposed along the assembly direction (202) and including an open end (214); wherein the rear attachment portion (212) defines external surface(216); an adapter nose receiving recess (218) extending longitudinally from the open end (214); a retention mechanism receiving aperture (220) in communication with the adapter nose receiving recess (218) and the exterior surface (216); and a first flange (222) defining a first lateral undercut (224) in the retention mechanism receiving aperture (220); and An adapter (300) includes a body including a nose portion (302) configured to fit within the adapter nose receiving recess (218) of the tip (200), the body including an outer surface (304) defining a polygonal retaining block (400) receiving aperture (306).

2. The tip and adapter assembly (150) of claim 1, wherein the polygonal retention block receiving aperture (306) is at least partially formed as a counterbore (310) having a bottom pin receiving aperture (308).

3. The tip and adapter assembly (150) of claim 2, wherein the bottom pin receiving hole (308) is a blind hole and is at least partially circular.

4. The tip and adapter assembly (150) of claim 1, wherein the polygonal retention block receiving aperture (306) defines a perimeter (311) having an octagonal configuration.

5. A tip and adapter assembly (150) according to claim 4, wherein the octagonal configuration includes a first side (312), a second side (312a) parallel to the first side (312), a third side (314) perpendicular to the first side (312), and a fourth side (314a) perpendicular to the second side (312a).

6. A tip and adapter assembly (150) according to claim 5, wherein the octagonal configuration includes a first angled surface (315) inclined relative to the first side (312), a second angled surface (316) inclined relative to the second side (312a), a third angled surface (316a) inclined relative to the third side (314), and a fourth angled surface (316b) inclined relative to the fourth side (314a).

7. A tip and adapter assembly (150) according to claim 6, wherein the first angled surface (315) is configured to be different from the second angled surface (316), the third angled surface (316a) and the fourth angled surface (316b).

8. The tip and adapter assembly (150) of claim 7, further comprising a retaining block (400) disposed in the polygonal retaining block receiving hole (306) such that the retaining block (400) contacts the first side (312), the second side (312a), the third side (314) and the fourth side (314a), but does not contact the first angled surface (315), the second angled surface (316), the third angled surface (316a) and the fourth angled surface (316b).

9. A tip and adapter assembly (150) according to claim 8, wherein the retaining block (400) defines a center pin receiving hole (220) and a spring receiving hole (404), and the spring receiving hole extends from the center pin receiving hole (220) toward the outside of the retaining block (400).

10. The tip and adapter assembly (150) of claim 9, further comprising: a spring (600) disposed in the center pin receiving hole (220) and the spring receiving hole (404); and a pin (500) disposed in the center pin receiving hole (220) defining a recess (502) for receiving the spring (600).

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