US-12616910-B2 - Model vehicle sealed driveline

US12616910B2US 12616910 B2US12616910 B2US 12616910B2US-12616910-B2

Abstract

A model vehicle comprising an enclosed driveline is provided. The enclosed driveline may include a propulsion section, a power delivery section, a transmission section, a differential section, and in some cases, a second differential section. Failure of any component within any one of the various sections is inhibited or prevented from traveling from one section to another. Each section includes a first access and a second access in which power is input through the first access and output through the second access. In the propulsion section for example, there is a propulsion housing with a first propulsion access and a second propulsion access in which a motor drive input enters in through the first propulsion access and the motor drive output exits via the second propulsion access. The spur and pinion gears couple the motor drive input to the motor drive output within the propulsion housing.

Inventors

Casey Christen Jens Christensen
Otto Karl Allmendinger
Jory Sprowl
Skylar Hagler
Adam Cole Ewing

Assignees

TRAXXAS, L.P.

Dates

Publication Date: 20260505
Application Date: 20231006

Claims (10)

1 . A model vehicle comprising an enclosed driveline further comprising: a propulsion section, further comprising; a propulsion housing, further comprising; a first propulsion access; and a second propulsion access; a motor drive input associated with the first propulsion access; a ratioed output associated with the second propulsion access; wherein the motor drive input is coupled to the ratioed output within the propulsion housing; a power delivery section, further comprising; a power delivery housing, further comprising; a first power delivery access; and a second power delivery access; a driveshaft passing through the first power delivery access and the second power delivery access; a first washer provided in a first washer holder and inhibiting contaminates from passing through the first propulsion access; and a second washer provided in a second washer holder and inhibiting contaminates from passing through the second propulsion access; wherein the power delivery housing encloses the driveshaft; and wherein the ratioed output is mechanically coupled to one end of the driveshaft.
2 . The model vehicle according to claim 1 further comprising: a transmission section further comprising: a transmission housing, further comprising: a first transmission access; and a second transmission access; a transmission input associated with the first transmission access; a transmission output associated with the second transmission access; two or more transmission gears; wherein the transmission housing encloses the two or more transmission gears; wherein the ratioed output is mechanically coupled to the one end of the driveshaft via the ratioed output coupling with the transmission input and the transmission output coupling with the one end of the driveshaft.
3 . The model vehicle according to claim 2 , further comprising: a third transmission access provided in the transmission housing and associated with a second transmission output; a second driveshaft; a second differential section, further comprising: a second differential section housing, further comprising: a second differential input access; and a second differential output access, a second differential, further comprising: a second differential input associated with the second differential input access; a second differential power output coupled to the second differential output access; wherein the second differential power output is rotatively coupled with a second model vehicle wheel; wherein one end of the second driveshaft is coupled with the second transmission output; and wherein an other end of the second driveshaft is couple with the second differential input.
4 . The model vehicle according to claim 2 wherein the transmission housing further comprises a removable cover enabling access to an interior of the transmission housing.
5 . The model vehicle according to claim 2 wherein at least one of the first transmission access or the second transmission access is provided via a bearing.
6 . The model vehicle according to claim 1 further comprising: a differential section, further comprising; a differential housing, further comprising: a differential input access; and a differential output access; a differential, further comprising: a differential input associated with the differential input access; a differential power output coupled to a model vehicle wheel; and wherein an other end of the driveshaft is coupled with the differential input.
7 . The model vehicle according to claim 1 where the first washer and the second washer are felt washers.
8 . The model vehicle according to claim 1 wherein the motor drive input is coupled to the ratioed output via a pinion gear coupled with a spur gear.
9 . The model vehicle according to claim 1 , further comprising: a model vehicle chassis; wherein the propulsion housing is partially formed by a portion of a model vehicle chassis.
10 . The model vehicle according to claim 1 , wherein the first and second washer inhibits contaminates from passing into or out of the power delivery section.

Description

RELATED APPLICATIONS This application (claims the benefit of a related U.S. Provisional Application Ser. No. 63/414,088 filed Oct. 7, 2022, entitled “MODEL VEHICLE SEALED DRIVELINE,” to Casey Christen Jens Christensen et al., the disclosure of which is incorporated by reference herein in its entirety. BACKGROUND The following descriptions and examples are not admitted to be prior art by virtue of their inclusion in this section. Radio Controlled (RC) model vehicles have a long history as an enjoyable hobby for people of all ages. Over the years, the RC industry has grown and branched off into many sizeable sub-segments, one of which is off-road racing. Off-road racing has various classes, leagues, and vehicle types for people to experience the thrills of off-road racing in a smaller, sometimes scale versions of full-size vehicles. The intensity and competitiveness of racing has led to full-time four-wheel drive, full electric vs. nitro combustion engine, and innovative use of materials and designs to improve reliability, cost, and lightness. During extreme racing situations and conditions, components can sometimes break in a primary failure. In some cases, the fracturing of gears and metal in a transmission (for example) have resulted in damage to other components along a driveline. Minimizing potential secondary damage caused by a primary fracture helps in quickly repairing and re-fielding an off-road RC model vehicle after a primary failure. SUMMARY This summary is provided to introduce a selection of concepts that are further described below in the detailed description. This summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used as an aid in limiting the scope of the claimed subject matter. In accordance with one embodiment, a model vehicle comprising an enclosed driveline is provided. The enclosed driveline comprises a propulsion section including a propulsion housing having a first propulsion access and a second propulsion access. The model vehicle further has a motor drive input associated with the first propulsion access and a motor drive output associated with the second propulsion access. Wherein the motor drive input is coupled to the motor drive output within the propulsion housing. The model vehicle further comprises a power delivery section, further comprising a power delivery housing having a first power delivery access and a second power delivery access. The power delivery section also comprises a driveshaft passing through the first power delivery access and the second power delivery access and a first washer and a second washer. The first washer is provided in a first washer holder and inhibits contaminants from passing through the first propulsion access while the second washer is provided in a second washer holder and inhibits contaminates from passing through the second propulsion access. Wherein the power delivery housing encloses the driveshaft, the motor drive output is coupled of one end of the driveshaft and wherein failure in one section is inhibited from passing through to another section. Other or alternative features will become apparent from the following description, from the drawings, and from the claims. BRIEF DESCRIPTION OF THE DRAWINGS Certain embodiments will hereafter be described with reference to the accompanying drawings, wherein like reference numerals denote like elements. It should be understood, however, that the accompanying drawings illustrate only the various implementations described herein and are not meant to limit the scope of various technologies described herein. The drawings are as follows: FIG. 1 is an upper, left, front perspective view of a cross-section of one half of a model vehicle, according to an embodiment of the present disclosure; FIG. 2 is a left-side elevation view taken along the section of the perspective view of FIG. 1, according to an embodiment of the present disclosure; FIG. 3A, 3B are an upper, left, rear perspective view of some of the components from FIG. 1 showing the housing covers on (FIG. 3A), and the housing covers off (FIG. 3B), according to an embodiment of the present disclosure; FIG. 4 is an upper, left, rear perspective view of FIG. 3A shown in a slightly larger format, according to an embodiment of the present disclosure; FIG. 5 is an enlarged portion of FIG. 4 shown from an upper elevated view, according to an embodiment of the present disclosure; and FIGS. 6A and 6B are lower, right-side, front perspective views of the bottom of the model vehicle of FIG. 1, FIG. 6A shows the power delivery section 400 with the power delivery housing 410 cover removed, FIG. 6B shows the power delivery section 400 of FIG. 6A with the driveshaft 440 removed. according to an embodiment of the present disclosure. DETAILED DESCRIPTION In the following specification, numerous specific details are set forth to provide a thorough understanding of embodiments of the present discl