Claims:WE CLAIM:
1. An adapter (100) for a speed sensor (20) of a transmission housing (10) of a vehicle, the transmission housing (10) configured to house an input gear (30) therein, said adapter (100) defined by a hollow body, said adapter (100) configured to be nested in a recess configured on said transmission housing (10), said adapter (100) configured to receive the sensor (20) therein to space apart the sensor (20) from the input gear (30).
2. The adapter (100) as claimed in- claim 1, which includes a flange (102) extending from a first operative end of said body, of said adapter (100), in an operative outward direction.
3. The adapter (100) as claimed in claim 1, wherein at least two apertures (103) are configured on said flange (102) to facilitate fasteners (105) to pass therethrough for fastening said adapter (100) to said transmission housing (10).
4. The adapter (100) as claimed in claim 1, wherein at least one groove is configured along the curved face of said body.
5. The adapter (100) as claimed in claim 4, which includes an O-ring (107) configured to be received in said groove, said O-ring (107) configured to prevent seepage of oil from the transmission housing (10) through the gap between said adapter (100) and the transmission housing (10).
6. The adapter (100) as claimed in claim 1, wherein depth of the recess ranges from 25mm to 30mm.
7. The adapter (100) as claimed in claim 1, wherein diametrical dimension of the speed sensor (20) ranges from 19.7mm to 19.9mm.
8. The adapter (100) as claimed in claim 1, wherein the outer dimeter of said adapter (100) ranges from 34.5mm to 34.6mm.
9. The adapter (100) as claimed in claim 1, wherein the bore diameter of said adapter (100) ranges from 20mm to 20.033mm.
10. The adapter (100) as claimed in claim 1, wherein thickness of the flange (102) ranges from 7mm to 16.25mm.
11. The adapter (100) as claimed in claim 8, wherein thickness of the flange (102) is 9.85mm.
12. The adapter (100) as claimed in claim 1, wherein said adapter (100) is manufactured from mild steel.
13. The adapter (100) as claimed in claim 1, wherein cross-sectional shape of the adapter (100) is selected from the group consisting of circle, rhombus, rectangle and polygon.
14. A transmission housing (10) of a vehicle having an adapter (100) as claimed in any one of the preceding claims.

Dated this 30th day of March, 2022

_______________________________
MOHAN RAJKUMAR DEWAN, IN/PA – 25
of R.K.DEWAN & CO.
Authorized Agent of Applicant

TO,
THE CONTROLLER OF PATENTS
THE PATENT OFFICE, AT DELHI , Description:FIELD
The present invention relates to mounting arrangements for speed sensors in transmission housings of vehicles.
BACKGROUND
The background information herein below relates to the present disclosure but is not necessarily prior art.
Most vehicles including all-terrain vehicles, utility vehicles, and three-wheeled vehicles include a transmission speed sensor for calculating the transmission gear ratio when the vehicle is in use. Usually, the vehicle includes two types of speed sensors, one configured to monitor the speed of the input shaft, and the other configured to monitor the speed of the outer shaft of the transmission system (in RealTime).
Conventionally, the sensor for monitoring the speed of the input shaft is mounted on the engine, while the sensor for monitoring the speed of the output shaft is mounted in a recess created on the transmission housing, to allow the sensor to continuously sense the speed of the components.
However, for continuously sensing the speed of the component, a constant gap needs to be maintained between component and sensor. Therefore, the dimension of the sensor or dimension of the recess made in the housing is conventionally varied as per the dimension of the component. As a result, mounting the sensors in the housing becomes a troublesome task. For instance, if the dimension of the sensor is kept constant, then the configuration of the entire housing has to be changed for accommodating the different sizes of components. On the other hand, if the dimension of the housing is kept constant, then a sensor of a suitable configuration and dimension has to be produced for different sizes of the components. Hence, neither of the solutions is feasible and cost-effective. Moreover, it has been observed that misalignment of the sensor affects the sensing of the transmission speed.
There is therefore felt a need for an arrangement for mounting the sensor in such a way that the aforementioned drawback is alleviated.
OBJECTS
Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:
An object of the present disclosure is to provide an arrangement for mounting a speed sensor of a transmission housing.
Another object of the present disclosure is to provide an arrangement for mounting a speed sensor of a transmission housing which can accommodate components of various dimensions therein.
Still another object of the present disclosure is to provide an arrangement for mounting a speed sensor of a transmission housing, which does not require making any changes to the housing every time a component of a different dimension is fitted therein.
Yet another object of the present disclosure is to provide an arrangement for mounting a speed sensor of a transmission housing, which is a cost-effective solution.
Still another object of the present disclosure is to provide an arrangement for mounting a speed sensor of a transmission housing, which maintains a constant gap between the sensor and the component for facilitating continuous sensing of the speed of the component.
Other objects and advantages of the present disclosure will be more apparent from the following description, which is not intended to limit the scope of the present disclosure.
SUMMARY
The present disclosure envisages an adapter for a speed sensor of a transmission housing of a vehicle. The transmission housing is configured to house an output gear therein. The adapter is defined by a hollow body. The adapter is configured to be nested in a recess configured on the transmission housing. The adapter is configured to receive the sensor therein to space apart the sensor from the output gear.
In an embodiment, the adapter includes a flange extending from a first operative end of the body, of the adapter, in an operative outward direction.
In another embodiment, at least two apertures are configured on the flange to facilitate fasteners to pass therethrough for fastening the adapter to the transmission housing.
In yet another embodiment, at least one groove is configured along the curved face of the body.
In still another embodiment, the adapter includes an O-ring configured to be received in the groove. The O-ring is configured to prevent seepage of oil from the transmission housing through the gap between the adapter and the transmission housing.
In an embodiment, depth of the recess ranges from 25mm to 30mm.
In another embodiment, diametrical dimension of the speed sensor ranges from 19.7mm to 19.9mm.
In yet another embodiment, the outer dimeter of the adapter ranges from 34.5mm to 34.6mm.
In still another embodiment, the bore diameter of the adapter ranges from 20mm to 20.033mm.
In another embodiment, thickness of the flange ranges from 7mm to 16.25mm.
In yet another embodiment, thickness of the flange is 9.85mm.
In one embodiment, the adapter is manufactured from mild steel.
In another embodiment, cross-sectional shape of the adapter is selected from the group consisting of circle, rhombus, rectangle and polygon.
The present disclosure further envisages a transmission housing, of a vehicle, having an adapter of the present disclosure.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING
An adapter for a speed sensor of a transmission housing of a vehicle of the present disclosure will now be described with the help of the accompanying drawing, in which:
Figure 1 illustrates a front view of the transmission housing with a sensor fitted therein, as per conventional arrangements;
Figure 2 illustrates an isometric view of the transmission housing with the sensor, of Figure 1;
Figure 3 illustrates a front view of the adapter, fitted in the transmission housing, for mounting a speed sensor therein, as per the present disclosure; and
Figure 4 illustrates an isometric view of the adapter with the sensor in the transmission housing, of Figure 3.
LIST OF REFERENCE NUMERALS
10 transmission housing
20 speed sensor
30 input gear
100 adapter
102 Flange of adapter
103 aperture
105 fastener
107 O-ring

DETAILED DESCRIPTION
Embodiments, of the present disclosure, will now be described with reference to the accompanying drawing.
Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present disclosure. In some embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.
The terminology used, in the present disclosure, is only for the purpose of explaining a particular embodiment and such terminology shall not be considered to limit the scope of the present disclosure. As used in the present disclosure, the forms “a,” “an,” and “the” may be intended to include the plural forms as well, unless the context clearly suggests otherwise. The terms “comprises,” “comprising,” “including,” and “having,” are open ended transitional phrases and therefore specify the presence of stated features, operations, elements, modules, units and/or components, but do not forbid the presence or addition of one or more other features, operations, elements, components, and/or groups thereof.
When an element is referred to as being “mounted on,” “engaged to,” “connected to,” or “coupled to” another element, it may be directly on, engaged, connected or coupled to the other element. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed elements.
The terms first, second, third, etc., should not be construed to limit the scope of the present disclosure as the aforementioned terms may be only used to distinguish one element, component, region, layer or section from another component, region, layer or section. Terms such as first, second, third etc., when used herein do not imply a specific sequence or order unless clearly suggested by the present disclosure.
Terms such as “inner,” “outer,” “beneath,” “below,” “lower,” “above,” “upper,” and the like, may be used in the present disclosure to describe relationships between different elements as depicted from the figures.
Most vehicles including all-terrain vehicles, utility vehicles, and three wheeled vehicles include a transmission speed sensor for calculating the transmission gear ratio when the vehicle is in use. Usually, the vehicle includes two types of speed sensors, one configured to monitor the speed of an input shaft of the transmission system, and the other configured to monitor the speed of the outer shaft of the transmission system (in RealTime).
Conventionally, a recess is created on the transmission housing (10) to enable mounting of the sensor (20) therein (as shown in Figure 1 and Figure 2), to allow the sensor (20) to continuously sense the speed of the components.
Based on the sensed speed, the control unit of the vehicle generates a warning to the operator in case the speed limit is beyond or below the threshold limits.
However, the size of the speed sensor (20) is proportional to the size of the gears. Therefore, the dimension of the recess made in the housing varies as per the dimension of the sensor (20), which is quite troublesome. If suppose, a sensor (20) of a first dimension needs to be replaced by another sensor (20) of a second dimension, the entire transmission housing (10) needs to be changed only to accommodate the sensor (20) of the second dimension, and hence is not a feasible solution.
Moreover, it has been observed that misalignment of the sensor (20) affects the sensing of the transmission speed, thus giving a wrong indication of speed and falsely warning the operator. Hence, it necessary that an air gap is maintained between the sensor (20) and the component in the housing (10).
In an embodiment, the component is an inner gear (30).
There is therefore felt a need for an arrangement for mounting the sensor (20) in such a way that the aforementioned drawback is alleviated.
The present disclosure envisages an adapter (100) for a speed sensor (20) of a transmission housing (10) of a vehicle. The adapter (100) will be described with the help of Figures 3 and Figure 4.
Figure 3 illustrates a front view of the adapter, fitted in the transmission housing, for mounting a speed sensor therein.
Figure 4 illustrates an isometric view of the adapter with the sensor in the transmission housing.
The adapter (100) is defined by a hollow body. The adapter (100) is configured to be nested in a recess configured on the transmission housing (10) configured to house the input gear (30) therein. The adapter (100) is configured to receive the sensor (20) therein to space apart the sensor (20) from the input gear (30). In an embodiment, the sensor (20) is bolted on the adapter (100).
Providing an adapter (100) in the transmission housing (10) means that the recess configured on the transmission housing (10) has a standard universal dimension. To accommodate sensors (20) of different dimensions, only the adapter (100) needs to be changed, which is converse to the conventional housings which need to be entirely changed to house a sensor (20) of a different dimension therein. As a result, the adapter (100) is a cost-effective solution for mounting the speed sensor (20) in the transmission housing (10).
The spaced apart configuration of the sensor (20) from the input gear (30) facilitates generation of an air gap for the sensor (20) to sense the frequency of rotation of the gear (30) with ease.
In an embodiment, it is desired that the width of the air gap varies between 0.5mm to 1.5mm.
In an embodiment, the cross-sectional shape of the adapter (100) is selected from the group consisting of circle, rhombus, rectangle and polygon.
In an embodiment, the adapter (100) includes a flange (102) extending from a first operative end of the body in an operative outward direction. In another embodiment, the flange (102) includes at least two apertures (103) configured on the flange (102). The apertures (103) facilitate fasteners (105) to pass therethrough for fastening the adapter (100) to the transmission housing (10).
Fastening the adapter (100) to the transmission housing (10) allows ease in removing the adapter (100) when the sensor (20) or other dynamic components of the transmission or the wheels are to be replaced.
In one embodiment, at least one groove is configured along the curved face of the body of the adapter (100). In another embodiment, the adapter (100) includes an O-ring (107) configured to be received in the groove. The O-ring (107) is configured to prevent seepage of oil from the transmission housing (10) through the gap between the adapter (100) and the transmission housing (10).
In a preferred embodiment, a pair of grooves is configured along the curved face of the body of the adapter (100), and accordingly a pair of O-rings (107) is provided in the grooves.
In one embodiment, the depth of the recess ranges from 25mm to 30mm.
In another embodiment, the diametrical dimension of the speed sensor (20) ranges from 19.7mm to 19.9mm.
In an embodiment, the outer dimeter of the adapter (100) ranges from 34.5mm to 34.6mm. In a preferred embodiment, the outer dimeter of the adapter (100) remains constant for all variants of speed sensor (20).
In another embodiment, the bore diameter of the adapter (100) ranges from 20mm to 20.033mm.
In yet another embodiment, thickness of the flange (102) ranges from 7mm to 16.25mm. In a preferred embodiment, the thickness of the flange (102) is 9.85mm.
In one embodiment, the adapter (100) is metallic. In another embodiment, the adapter (100) is manufactured from mild steel.
The adapter (100) of the present disclosure, can be used for any type of transmission housing (10), and can be adjusted as per user demand or according to the standardized variant.
The present disclosure further envisages a transmission housing (10), of a vehicle, which comprises an adapter (100) as described above.
In an embodiment, the adapter (100) is configured to be fitted to a transmission housing (10) of a vehicle which could be a farm vehicle. In another embodiment, the farm vehicle is a 12Forward and 3Reverse vehicle.
In yet another embodiment the adapter (100) is configured to be fitted to a transmission housing (10) of a three wheeled vehicle or a four wheeled vehicle which includes all-terrain vehicles and multi-purpose utility vehicles.
The foregoing description of the embodiments has been provided for purposes of illustration and not intended to limit the scope of the present disclosure. Individual components of a particular embodiment are generally not limited to that particular embodiment, but, are interchangeable. Such variations are not to be regarded as a departure from the present disclosure, and all such modifications are considered to be within the scope of the present disclosure.
TECHNICAL ADVANCEMENTS
The present disclosure described hereinabove has several technical advantages including, but not limited to, the realization of an adapter for a speed sensor of a transmission housing of a vehicle that:
• can accommodate components of various dimensions therein;
• does not require making any changes to the housing every time a component of a different dimension is fitted therein;
• is a cost-effective solution; and
• maintains a constant gap between the sensor and the component for facilitating continuous sensing of the speed of the component.
The foregoing disclosure has been described with reference to the accompanying embodiments which do not limit the scope and ambit of the disclosure. The description provided is purely by way of example and illustration.
The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
The foregoing description of the specific embodiments so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
Any discussion of materials, devices, articles or the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of these matters form a part of the prior art base or were common general knowledge in the field relevant to the disclosure as it existed anywhere before the priority date of this application.
While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation.