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Patent Searching and Data


Title:
MECHANICAL ASSEMBLY FOR TORQUE MEASUREMENT
Document Type and Number:
WIPO Patent Application WO/2023/022685
Kind Code:
A1
Abstract:
The invention relates to a mechanical assembly for torque measurement, used by mounting onto a driveshaft tube, which provides rotary motion and power transmission between differential and transmission in motor vehicles in the automotive industry. More specifically, the invention relates to a mechanical assembly for torque measurement, which is used by mounting onto a driveshaft tube that provides sealing, protects from external conditions and seals the electronic circuit that performs measurement and data collection processes and creates no balance issues thanks to its geometric design.

Inventors:
IŞIK EFE (TR)
ALDEMİR OĞUZHAN (TR)
TARAKÇI SEDAT (TR)
SOLMAZ TURAN (TR)
Application Number:
PCT/TR2022/050769
Publication Date:
February 23, 2023
Filing Date:
July 19, 2022
Export Citation:
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Assignee:
TIRSAN KARDAN SANAYI VE TICARET ANONIM SIRKETI (TR)
International Classes:
G01L3/02; G01L3/04; G08C17/02
Domestic Patent References:
WO2018069160A12018-04-19
Foreign References:
CN205066984U2016-03-02
JP2007327890A2007-12-20
Attorney, Agent or Firm:
DESTEK PATENT, INC. (TR)
Download PDF:
Claims:
7

CLAIMS A mechanical assembly (1 ) for torque measurement, used by mounting onto a driveshaft tube (2), which provides rotary motion and power transmission between differential and transmission in motor vehicles, characterized by comprising:

• a retainer body (1.3) which carries and protects all components on the driveshaft tube (2),

• an electronic circuit (1 .6) which performs measurement and data collection,

• one or multiple batteries (1.5) which provide power said electronic circuit (1 -6),

• a top cover (1.1 ) and a bottom cover (1 .2) which are attached to said retainer body (1 .3) and protect the electronic circuit (1 .6) and batteries (1 .5),

• a gasket (1 .4) which provides sealing between the retainer body (1 .3) and the driveshaft tube (2), the retainer body (1.3) and the bottom cover (1.2), and the retainer body (1 .3) and the top cover (1.1 ). The mechanical assembly for torque measurement according to Claim 1 , wherein has a geometric design that would create no balance issues. The mechanical assembly for torque measurement according to Claim 1 , wherein balance is provided on the driveshaft tube (2) to by changing the number and positions of the batteries in the battery (1 .5). The mechanical assembly for torque measurement according to Claim 1 , wherein measured data by said electronic circuit (1 .6) can be transmitted wirelessly.

Description:
MECHANICAL ASSEMBLY FOR TORQUE MEASUREMENT

Technical Field

The invention relates to a mechanical assembly for torque measurement, used by mounting onto a driveshaft tube, which provides rotary motion and power transmission between differential and transmission in motor vehicles in the automotive industry.

More specifically, the invention relates to a mechanical assembly for torque measurement, which is used by mounting onto a driveshaft tube that provides sealing, protects from external conditions, and seals the electronic circuit that performs measurement and data collection processes, and creates no balance issues thanks to its geometric design.

Prior Art

In motor vehicles, driveshafts are transfer element that transmits torque and rotary motion from engine to rear wheels through axles. Due to high torque transmitting requirements, sub - assemblies are designed accordingly. Torque capacities expected to be carried are determined with an analytical approach, based on various factors such as engine torque of the vehicle, field of use of the vehicle and transmission type. Torque levels to be ensured by the driveshaft in actual conditions of use can only be measured by collecting strain data over the driveshaft in a test environment.

In automotive industry, there is no torque measurement and data collection electronic circuit adaptation that can be integrated over the driveshaft tube, continuously perform the required tasks and not require a change in the driveshaft design.

While commercial measurement systems are available to perform torque measurement on driveshaft, it is difficult to use these products in the field as they are costly and not suitable for operation under field conditions and instrumentation. In some applications, driveshaft needs to be designed specially for electronic equipment integration. In other applications, experimental and testing products are used, which are disassembled over the driveshaft after the experiment I testing and are not suitable for operation under field conditions.

In existing applications, application no. US 2002 002 877 A1 , titled “Engine torque sensor” is an invention designed for measuring engine torque. In the invention is mentioned to a sensing system that includes components mounted to a driveshaft that are used to measure the twist of the driveshaft under load to determine engine torque. Said apparatus includes forming two separate patterns on the driveshaft between the transmission and axle differential at a predetermined distance, using lasers and photo receivers to scan patterns as the driveshaft rotates, and using the data obtained from photos to measure the angle of twist on the driveshaft.

In conclusion, the drawbacks explained above and the shortcomings in existing solutions to the problems have necessitated improvement in the related technical field.

Purpose of the Invention

The present invention relates to a mechanical assembly for torque measurement, which is used for mounting onto a driveshaft tube, eliminates the disadvantages mentioned above and brings new benefits to the technical field.

The main purpose of the invention is to provide a mechanical assembly for torque measurement with a compact design, which is used by mounting onto a driveshaft tube that provide sealing, protects from external conditions and seals the electronic circuit that performs measurement and data collection processes, and does not require a change in the driveshaft design.

Another purpose of the invention is to provide a mechanical assembly for torque measurement which creates no balance issues thanks to its geometric design.

Another purpose of the invention is to provide an assembly which does not require a change in the driveshaft design and is available for use throughout the useful life of a vehicle.

Another purpose of the invention is to provide data collection from desired locations thanks to the sensors in the employed electronic circuit and the developed design.

Another purpose of the invention is to provide an assembly which can stay on the driveshaft tube at high speeds. Another purpose of the invention is to provide an assembly which can wirelessly transmit the measured data.

Another purpose of the invention is to provide a disassembled assembly which allows for easy mounting of the electronic circuit.

Another purpose of the invention is to provide a compact and light mechanical assembly for torque measurement which is not affected by field and environmental conditions.

In order to achieve the purposes described above and apparent from the detailed description, the invention relates to a mechanical assembly (1 ) for torque measurement, used by mounting onto a driveshaft tube (2), which provides rotary motion and power transmission between differential and transmission in motor vehicles, characterized by comprising:

• a retainer body (1.3) which carries and protects all components on the driveshaft tube (2),

• an electronic circuit (1 .6) which performs measurement and data collection,

• one or multiple batteries (1 .5) which provide power said electronic circuit (1 .6),

• a top cover (1.1 ) and a bottom cover (1 .2) which are attached to said retainer body (1 .3) and protect the electronic circuit (1 .6) and batteries (1 .5),

• a gasket (1.4) which provides sealing between the retainer body (1.3) and the driveshaft tube (2), the retainer body (1.3) and the bottom cover (1.2), and the retainer body (1 .3) and the top cover (1.1 ).

The below drawings and the detailed description set out with reference to the accompanying drawings provide for a clearer understanding of the structural and characteristic properties and all benefits of the present invention; therefore, the evaluation needs to take these drawings and the detailed description into account.

Brief Description of the Drawings

Figure 1 is a mounted view of the mechanical assembly for torque measurement subject of the invention on a cardan shaft tube. Figure 2 is a cross - sectional view of the mechanical assembly for torque measurement subject of the invention.

Figure 3 is an overall view of the mechanical assembly for torque measurement subject of the invention on a driveshaft tube.

Description of Part References

1 . Mechanical assembly for torque measurement

1.1 Top cover

1 .2 Bottom cover

1 .3 Retainer body

1 .4 Gasket

1 .5 Battery

1.6 Electronic circuit

2. Driveshaft tube

Detailed Description of the Invention

In order to facilitate a better understanding of the mechanical assembly for torque measurement according to the invention, this detailed description demonstrates the preferred embodiments of the invention in a non - limiting manner.

The invention relates to a mechanical assembly (1 ) for torque measurement, used by mounting onto a driveshaft tube (2), which provides rotary motion and power transmission between differential and transmission in motor vehicles in the automotive industry, mechanical assembly (1 ) for torque measurement which is the subject of the invention characterized by comprising:

• a retainer body (1 .3) which carries and protects all components on the driveshaft tube (2),

• an electronic circuit (1 .6) which performs measurement and data collection,

• one or multiple batteries (1 .5) which provide power said electronic circuit (1 .6), • a top cover (1.1 ) and a bottom cover (1 .2) which are attached to said retainer body

(1 .3) and protect the electronic circuit (1 .6) and batteries (1 .5),

• a gasket (1.4) which provides sealing between the retainer body (1.3) and the driveshaft tube (2), the retainer body (1.3) and the bottom cover (1.2), and the retainer body (1 .3) and the top cover (1.1 ).

Figure 1 is a mounted view of the mechanical assembly (1 ) for torque measurement according to the invention on a driveshaft tube. Accordingly, the mechanical assembly (1 ) for torque measurement basically characterized by comprising a top cover (1 .1 ), a bottom cover (1 .2), a retainer body (1 .3), a gasket (1 .4), a battery (1 .5) and an electronic circuit (1 -6).

Said retainer body (1.3) fully surrounds the driveshaft tube (2), and clamps hold the driveshaft tube (2) and one another tightly. The retainer body (1 .3) carries and protects all components of the assembly. It is also designed not to cause balance issues.

The top cover (1.1 ) and the bottom cover (1 .2) are mechanically assembled to the retainer body (1 .2), and said covers (1.1 , 1.2) protect the electronic circuit (1 .6) and the batteries (1 .5) (Figure 2). Measurement and data collection can be performed at desired locations thanks to the sensors of the electronic circuit (1 .6) and the developed design.

The gasket (1 .4) located between the driveshaft tube (2) and the retainer body (1 .3) provide sealing and function as a vibration isolator. The gasket (1.4) is located also between the retainer body (1.3) and the bottom cover (1.2) and the retainer body (1.3) and the top cover (1 .1 ) to provide sealing between the retainer body (1 .3) and the bottom cover (1 .2) and the top cover (1.1 ).

Balance is an important issue since driveshaft rotate at high speeds. In one embodiment of the invention, the balance of the developed design and the system itself as well as the existing balance on the driveshaft is stabilized by the weight of the batteries (1.5). Moreover, balancing can be performed by increasing / decreasing the number of batteries in the battery pack and changing their position. The battery (1.5) is used as a balance weight in order to prevent potential balance problems.

The invention consists of six components for mounting onto the driveshaft tube (2). After removal of the detachable parts, the electronic circuit (1 .6) is installed, and the removed parts are reassembled. The battery (1 .5) is located over the disassembled part and held in its position by means of a support element.