DE102017200271A1 - Transmission for a mobile vehicle - Google Patents

Abstract

A transmission for a mobile vehicle has a sensor element (1) which is fastened to a component (6), wherein the component (6) surrounds a toothed wheel. Thus, the lubricant level can be detected in a simple manner by means of the sensor element (1).

Description

The invention relates to a transmission for a mobile vehicle with a sensor element for the level of the lubricant in the transmission according to the closer defined in the preamble of claim 1.

In order to operate a gearbox reliable, it is essential to monitor the level of the lubricant in the transmission. For this purpose, oil level sensors are used, which are often inserted through an opening in the transmission housing and, wherein the sensors have a flange, by means of which they are screwed to the transmission housing.

The DE 10311521 A1 discloses an oil level sensor element having a flange by means of which the oil level sensor element is attachable to a housing wall.

Since transmissions in mobile vehicles often change their position as a result of uphill or downhill, this change in position affects, in particular in the vicinity of the wall of the transmission housing to the level of the level of the lubricant. As a result, oil level sensors arranged directly on the housing wall often provide incorrect measured values with regard to the lubricant level. In addition, the gears that dip into the lubricant move the lubricant, which also affects the level measured by the sensor.

The present invention has for its object to arrange a sensor element in a transmission, by means of which the lubricant level can be reliably detected.

The object is achieved with a characterizing features of the main claim having generic transmission with a sensor element.

According to the invention, the gear on a gear, which is surrounded by a component, often also called shielding, which takes place outside of this component in the immediate vicinity of the component only a small turbulence of the lubricant. The sensor element according to the invention is arranged adjacent to this component, wherein the component is arranged between the gear and the sensor element. This makes it possible that the sensor element can determine the lubricant level more precisely.

In a further embodiment of the invention, the sensor element is not located on the outer walls of the transmission but spaced from these outer walls, since the change in the lubricant level in the direction of the center of the transmission housing in uphill or downhill is less. Preferably, the sensor element is arranged near the transmission center.

In a further embodiment of the invention, the sensor element is not held by means of a flange and screw fixed in the gear housing but the sensor element is attached to the component which shields the gear. Here, the component which shields the gear either have a retaining clip, in which the sensor is clipped or the component consists of two parts and the sensor element is clamped when joining the two parts in between. As a result, a cost-effective attachment of the sensor element is achieved.

Further features can be found in the description of the figures.

• 1 ein Sensorelement, welches zwischen ein erstes Einzelbauteil und ein zweites Einzelbauteil des Bauteils geklemmt ist;
• 2 eine Schnittdarstellung der Befestigung des Sensorelementes nach 1; und
• 3 ein Sensorelement befestigt in einem Clip am Bauteil.

Show it

• 1 a sensor element which is clamped between a first individual component and a second individual component of the component;
• 2 a sectional view of the attachment of the sensor element according to 1 ; and
• 3 a sensor element mounted in a clip on the component.

figure 1 :

A sensor element 1 is between a first single component 2 and a second Einzelblauteil 3 clamped. The first single component 2 and the second single component 3 together make up a component 6 which at least partially surrounds a gear, not shown, in order to act in the sense of a shielding plate in order to reduce slippage losses. The first single component 2 has a tab 4 and the second single component 3 has a tab 5 on, wherein the sensor element 1 between the tab 4 and the tab 5 is clamped.

figure 2 :

When assembling the first single component 2 and the second single component 3 becomes the sensor element 1 between the tab 4 and the tab 5 clamped and thus stationary immediately adjacent to the component 6 held.

figure 3 :

The component 6 has a holder 7 in which the sensor element 1 can be locked. In addition, there is a possibility that the holder 7 an L-shaped extension 8th has to the sensor element 1 additionally to be kept stationary.

By the sensor element 1 adjacent to the component 6 is arranged, the component 6 but between the sensor element 1 and the gear, not shown, is the sensor element 1 in soaked lubricant to safely detect this. Because the gear and thus the component 6 spaced from the wall of the gear housing is located in the direction of the center of the gear housing, the lubricant level can be detected safely even when driving downhill or uphill. Because the sensor element 1 no longer needs to be fixed by means of a flange and screws, but is kept stationary in a simple manner, the lubricant level can be detected in a cost effective manner.

LIST OF REFERENCE NUMBERS

1

sensor element

2

first single component

3

second single component

4

flap

5

flap

6

component

7

holder

8th

L-shaped extension

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10311521 A1 [0003]

Claims (5)

Transmission for a mobile vehicle, wherein at least one gear is at least partially disposed in a lubricant and by means of a sensor element (1) the level of the lubricant can be determined, characterized in that the sensor element (1) adjacent to a component (6) which the gear at least partially surrounds, is arranged, wherein the component (6) between the gear and the sensor element (1) is arranged. Gearbox after Claim 1 , characterized in that the sensor element (1) is arranged at a distance from the outer walls of the transmission housing. Gearbox after Claim 1 , characterized in that the component (6) consists of two individual components (2, 3) and the sensor element (1) by the assembly of the two individual components (2, 3) is held stationary. Gearbox after Claim 1 , characterized in that the component (6) has a holder (7) for the sensor element (1). Gearbox after Claim 2 , characterized in that the sensor element (1) is arranged in the gear housing such that inclinations of the mobile vehicle at the location of the sensor element (1) have a low effect on a change in the lubricant level.

Images