Tire monitoring system for a vehicle

Patent metadata

Field	Value
Publication number	US-9669669-B2
Application number	US-201514865970-A
Country	US
Kind code	B2
Filing date	Sep 25, 2015
Priority date	Oct 2, 2014
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

A structurally simple tire monitoring system for a vehicle, for establishing tire-specific parameters, includes a valve stem with an attachment section, a fastening element and a tire air pressure sensor with a housing that has a mounting region. When the fastening element is in a locking position, the attachment section and the mounting region are releasably connected to one another using the fastening element. This is achieved in that the mounting region of the fastening element is movably supported between the locking position and an unlocking position, in which the mounting region and the attachment section can be released from one another. An elastic latching element is provided, which allows a movement of the fastening element relative to the housing toward the unlocking position, counter to a pressure exerted by the latching element. The latching element presses the fastening element into the locking position.

First claim

The invention claimed is:

1. A tire monitoring system for a vehicle for establishing a tire-specific parameter comprising:
a valve stem,
at least one fastening element, and
a tire air pressure sensor including a housing which accommodates a sensor for establishing at least one tire-specific parameter and for a wireless transmission of the at least one tire-specific parameter,
wherein the housing has a mounting region, and the valve stem comprises an attachment section, and
wherein, when the at least one fastening element is in a locking position, the attachment section of the valve stem and the mounting region of the housing are releasably connected to one another using the fastening element,
wherein the mounting region of the housing movably supports the at least one fastening element between a locking position and an unlocking position, in which the mounting region and the attachment section are adapted to be released from one another, and
at least one elastic latching element is provided, which allows a movement of the at least one fastening element in relation to the housing toward the unlocking position, counter to a pressure exerted by the at least one elastic latching element, and which presses the at least one fastening element into the locking position.

2. The tire monitoring system according to claim 1 , wherein a slot-shaped recess is formed in the mounting region having a chimney-shaped design, which extends transverse to the longitudinal axis of the valve stem when it is installed, and in which the at least one fastening element is held between the locking position and the unlocking position in a displaceable manner.

3. The tire monitoring system according to claim 1 , wherein the at least one fastening element has an annular or circle segment design, and has a passage, through which the attachment section is adapted to be inserted when the valve stem is mounted on a tire air pressure sensor, wherein, when the valve stem is installed, the at least one fastening element encompasses, at least in sections, the attachment section of the valve stem, and a latching section of the substantially annular, or circle-segment shaped fastening element is engaged, at least in sections, when in the locking position, with the attachment section of the valve stem.

4. The tire monitoring system according to claim 3 , wherein the attachment section of the valve stem has a ramp-shaped bevel, formed on a section of the peripheral surface of the valve stem, wherein the ramp-shaped bevel forces the movably supported fastening element over the latching section into the unlocking position, when the valve stem is installed.

5. The tire monitoring system according to claim 4 , wherein the attachment section of the valve stem has a latching recess, that is formed on the attachment section, behind the ramp-shaped bevel when viewed from the front surface of the attachment section in the longitudinal direction of the valve stem, and engages in the latching section of the fastening element when in the locking position.

6. The tire monitoring system according to claim 3 , wherein at least one blocking lug protrudes from the attachment section of the valve stem, wherein the passage has an unlocking section adapted to the at least one blocking lug, which is disposed outside of the movement path of the valve stem when in the locking position, such that the at least one blocking lug bears against the fastening element and a movement of the valve stem away from the tire air pressure sensor is blocked, and which, when in the unlocking position, is disposed in the movement path of the valve stem such that the valve stem can is adapted to be pulled out of the passage for the removal thereof.

7. The tire monitoring system according to claim 1 , wherein the at least one elastic latching element is designed as a spring element, which is inserted in a recess formed in the housing, and is supported on the base of the recess such that the at least one elastic latching element exerts a pressure on the fastening element in a direction pointing away from the undersurface of the housing.

8. The tire monitoring system according to claim 1 , wherein the at least one elastic latching element is designed as a spring arm that is an integral part of the fastening element, wherein the spring arm bears against the housing such that the at least one elastic latching element exerts a pressure on the fastening element in a direction pointing away from the undersurface of the housing.

9. The tire monitoring system according to claim 1 , wherein the at least one elastic latching element is designed as a spring arm that is an integral part of the housing, wherein the spring arm is connected at its first longitudinal end to the housing, and its second longitudinal end bears against the at least one fastening element such that the at least one elastic latching element exerts a pressure on the at least one fastening element in a direction pointing away from the undersurface of the housing.

10. The tire monitoring system according to claim 9 , wherein at least one protective wall element extends parallel to the at least one elastic latching element, which wall element is formed on the housing and extends over the at least one elastic latching element in a direction pointing away from the housing.

11. The tire monitoring system according to claim 1 , wherein the mounting region of the housing has at least one securing arm, which secures the at least one fastening element on the mounting region of the housing, in that the at least one securing arm blocks a movement of the at least one fastening element directed from the unlocking position over and beyond the locking position.

12. The tire monitoring system according to claim 11 , wherein the at least one fastening element has a blocking arm, which bears against the securing arm of the housing when the at least one fastening element is in the locking position.

13. The tire monitoring system according to claim 1 , wherein the attachment section of the valve stem has, at least in sections, a flat area, and the mounting region of the housing has an insertion receiver designed to be complementary to the flat area, such that, in order to install the valve stem on the tire air pressure sensor, the attachment section of the valve stem is adapted to be inserted in the insertion receiver such that it cannot rotate.

14. The tire monitoring system according to claim 1 , wherein the elastic latching element exerts a tensioning force on the fastening element that forces the fastening element into the locking position.

15. The tire monitoring system according to claim 1 , wherein the fastening element has a hook-shaped retaining attachment formed at the top thereof, having at least one support section, which bears against the mounting region.

16. The tire monitoring system of claim 1 wherein the tire air pressure sensor communicates with a vehicle-side control device.

Assignees

• Gorenzweig Igor
• Moenig Stefan
• Dementyev Yevgen
• Arnoldo Sven
• Dussinger Axel
• Gamer Benedikt
• Huf Huelsbeck & Fuerst Gmbh & Co Kg

Inventors

• Gorenzweig Igor
• Moenig Stefan
• Dementyev Yevgen
• Arnoldo Sven
• Dussinger Axel
• Gamer Benedikt

Classifications

• B60C23/0494 Primary

  Valve stem attachments positioned inside the tyre chamber · CPC title