CN215262180U

CN215262180U - Torsion sensor, centre shaft torque sensor, middle motor and hub motor

Info

Publication number: CN215262180U
Application number: CN202121448483.3U
Authority: CN
Inventors: 高峰
Original assignee: Taicang Yuebo Electric Technology Co ltd
Current assignee: Taicang Yuebo Electric Technology Co ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-12-21
Anticipated expiration: 2031-06-28

Abstract

The utility model discloses a torque sensor, include: the fixing base, the input dish, the connector, collection system and processing circuit, the fixing base is arranged with the input dish is coaxial, fixing base and input dish rely on the connector to be connected, collection system at least with the fixing base, one of them fixed connection of input dish or connector, collection system is connected with processing circuit, through setting up the fixing base, input dish and connector structure, can adapt to different signal acquisition modes, and is with low costs, strong adaptability, through adopting the mode that foil gage was gathered or the angle was gathered, the adaptation is to the different requirements of performance and cost, it is wide to have application scope, the equipment is convenient, high durability and convenient use, the advantage of dependable performance.

Description

Torsion sensor, centre shaft torque sensor, middle motor and hub motor

Technical Field

The utility model relates to a sensor field, in particular to torsion sensor, axis torque sensor put motor and in-wheel motor.

Background

The torque sensor is a sensor for measuring torsion, the sensor is generally divided into two types of measuring static torsion and dynamic torsion, the measuring principle is divided into an induction type and a strain type, in the dynamic torsion measurement, a common strain type sensor uses a strain gauge to collect signals and transmits the signals by a slip ring or a coil, in the scheme of adopting the slip ring, because the slip ring has friction, the whole service life of the sensor directly depends on the service life of the slip ring, and along with the increase of the service time, the resistance and the stability of the slip ring can be gradually reduced, the sensor transmits by the coil, the transmission scheme is complex, the cost is high, the transmission speed is relatively low, and the traditional induction type torque sensor is adopted, so that the problems of poor measurement linearity and high cost exist.

SUMMERY OF THE UTILITY MODEL

The defect that prior art exists more than, the utility model discloses a main aim at overcomes prior art's weak point, discloses one kind through setting up fixing base, input disc and connector structure, can rely on adaptation foil gage or response original paper as required, is fit for multiple application scenario, has the equipment convenience simultaneously, simple to use, advantage of dependable performance.

In order to realize the technical purpose, the utility model discloses a following technical scheme:

a torque sensor, comprising: fixing base, input dish, connector, collection system and processing circuit, fixing base and input dish coaxial arrangement, fixing base and input dish rely on the connector to be connected, collection system at least with fixing base, input dish or connector one of them fixed connection, collection system and processing circuit are connected.

Furthermore, the connector and the fixing base are designed integrally, or the connector and the input disc are designed integrally, or the connector is an independent structure which is independently arranged, or the connector is arranged on the fixing base and the input disc simultaneously.

Furthermore, at least one connecting body is arranged, and the connecting body can be a torsion beam, a spring, a connecting rod or a wedge block.

Further, when the number of the connecting bodies is more than or equal to two, the connecting bodies are uniformly arranged around the axis of the fixing seat in a circumferential mode. For example:

the connecting bodies are provided with two connecting bodies and are uniformly arranged around the axis of the fixed seat.

The connector is provided with three connectors which are evenly arranged around the axis of the fixed seat.

The connector is provided with four to do the circumference around the axle center of fixing base and evenly arrange.

Further, the collecting device is a strain gauge, a magnet or a photoelectric encoder.

Furthermore, the fixed seat and the input disc can rotate relatively.

Furthermore, the fixed seat can be half-wrapped on the circumference of the input disc or coaxially sleeved and arranged.

Furthermore, the input disc can be semi-covered on the circumference of the fixed seat or coaxially sleeved and arranged.

Further, the processing circuit may transmit the signal directly by means of a wire or wirelessly.

A middle shaft sensor uses the torque sensor.

A middle motor uses the torque sensor.

An in-wheel motor uses the torque sensor.

The utility model discloses the beneficial effect who gains:

1) through the design of the fixing seat, the input disc and the connecting body, the device can adapt to various measurement principles.

2) The torsion is measured by measuring the deformation, the precision is high, and the response speed is high. .

3) Static or dynamic measurement can be realized by transmitting data in a wired or wireless mode.

4) The torque can be measured only by one path of measurement input.

Drawings

Fig. 1 is a schematic structural diagram of a torque sensor according to the present invention;

fig. 2 is a schematic view of another embodiment of the torque sensor of the present invention;

fig. 3 is a schematic view of a third structure of a torque sensor according to the present invention;

fig. 4 is an exploded view of a third structure of a torque sensor according to the present invention;

the reference numbers are as follows:

1. fixing base, 2, input disc, 3, connector, 4, collection system, 5, processing circuit, 6, cylinder, 7, circular recess, 8, hall sensor, 9, magnet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

A torque sensor, comprising: fixing base 1, input disc 2, connector 3, collection system 4 and processing circuit 5, fixing base 1 and the coaxial arrangement of input disc 2, fixing base 1 and input disc 2 rely on connector 3 to be connected, collection system 4 at least with fixing base 1, input disc 2 or connector 3 one of them fixed connection, collection system 4 is connected with processing circuit 5.

First embodiment

Please refer to fig. 1 and 2

A torque sensor, comprising: fixing base 1, input disc 2, connector 3, collection system 4 and processing circuit 5, fixing base 1 and the coaxial arrangement of input disc 2, fixing base 1 and input disc 2 rely on connector 3 to be connected, and collection system 4 is fixed on connector 3, and collection system 4's output is connected with processing circuit 5.

The method specifically comprises the following steps:

connector

3 and 2 integrative designs of input dish to rely on connector 3 to be connected with fixing base 1,

fixing base

1 and 2 coaxial coupling of input dish and range upon range of arrangement, and the diameter of fixing base 1 is greater than the diameter of input dish 2, and it is protruding that fixing base 1 is provided with the cladding all around, and this cladding is protruding to be connected with connector 3 of input dish 2, and collection system 4 pastes on connector 3, and collection system 4 is connected with the processing circuit 5 that sets up at fixing base 1.

Specifically, in the present embodiment, the connecting body 3 is a torsion beam extending from the input disc 2, the torsion beam is provided with four torsion beams, and the torsion beams are uniformly arranged around the axis of the input disc 2, the collecting device 4 is a strain gauge, the strain gauge is attached to the torsion beam and forms a bridge structure, and the output of the strain gauge is connected with the processing circuit 5.

The processing circuit 5 transmits data outwards by means of bluetooth, and of course, the processing circuit 5 can also transmit signals directly by means of wires.

It should be noted that, in order to ensure the reliability of the connection between the input disc 2 and the fixing base 1, the fastening structure is provided at the position where the torsion beam is connected to the fixing base 1, in this embodiment, the end of the torsion beam is provided with a cylinder 6, and a circular groove 7 is provided around the fixing base 1, and the cylinder 6 at the end of the torsion beam can be clamped into the circular groove 7 of the fixing base 1.

In the above structure, there is a gap between the input disc 2 and the fixed base 1, in this embodiment, the gap is 0.3mm, the axial center position of the input disc and the fixed base is connected by a bearing, that is, the radial force of the input disc is borne by the bearing, and the fastening structure and the torsion beam only bear the torsion between the input disc 2 and the fixed base 1.

Of course, the fastening structure may be configured as a dovetail groove fit or a T-shaped groove fit, and the like, and is not particularly limited herein.

In addition, as a variation of this embodiment, four torsion beams may also extend from the fixed seat 1, and the torsion beams are uniformly arranged around the axis of the fixed seat 1.

In another variation of the present embodiment, the fixing base 1 and the input disc 2 are coaxially connected and arranged in the same layer, that is, the fixing base 1 may be an annular structure outside the input disc 2, and the connection between the fixing base and the input disc 2 is realized by the connecting body 3, and of course, the solution may also be designed in a manner that the fixing base 1 is annular and the input disc 2 is an outer annular structure, which is not limited herein.

In the measuring process, because the strength of the connecting piece for connecting the fixed seat 1 and the input disc 2 is low, the fixed seat 1 and the input disc 2 can rotate relatively after torsion is input.

In addition, the connecting piece in this scheme can independently set up, and at this moment, for the reliability of guaranteeing to connect, two sections of turning round the roof beam are provided with a cylinder 6, and are provided with circular slot 7 around fixing base 1 and the input dish 2, turn round the cylinder 6 at roof beam both ends and can block respectively in fixing base 1 and the circular slot 7 of input dish 2.

In the above embodiment, the connecting body 3 may be provided as a link or the like in addition to the torsion beam.

Second embodiment

Please refer to fig. 3 and 4

Compared with the first embodiment, the second embodiment discloses a torque sensor, which is different in that the collecting device 4 for measurement is a magnet or a photoelectric encoder, and the fixing base 1, the input disc 2 and the connecting body 3 are independent structures.

The method specifically comprises the following steps: fixing base 1 and input dish 2 coaxial arrangement rely on connector 3 to be connected between fixing base 1 and the input dish 2, and on acquisition device 4 fixed input dish 2, processing circuit 5 fixed was on fixing base 1, and acquisition device 4 is connected with processing circuit 5 non-contact. Wherein, fixing base 1 is circular, and 1 circular one end of fixing base is stretched out and is had connection structure, and input dish 2 is circular, and 2 circular one ends of input dish are stretched out and are had connection structure, and wherein, the connection structure of fixing base 1 and the connection structure of input dish 2 can mutually support, are provided with connector 3 between the connection structure of fixing base 1 and the linking structure of input dish 2.

In particular, in the present embodiment, the connecting body 3 is a wedge made of an elastic material, such as a plastic wedge, a rubber wedge, or the like. Of course, the wedge can be replaced by a spring, a plate spring and the like.

In this embodiment, to ensure the transmission, the connection structure of the fixing base 1, the connection structure of the input disc 2 and the connection body 3 may be provided with only one set. For example, the connecting structure of the fixing base 1, the connecting structure of the input disc 2 and the connecting body 3 occupy 120 degrees respectively and are connected to form a whole circle.

Of course, in order to achieve better transmission and more convenient installation, the connecting structure of the fixed seat 1, the connecting structure of the input disc 2 and the connecting body 3 can be set into 2 groups, 3 groups, 4 groups or even more, and are uniformly arranged around the axis of the fixed seat 1 or the input disc 2.

In particular, in this embodiment, the collecting device 4 is fixed on the input disc 2, the processing circuit 5 is fixed on the fixing base 1, and the collecting device 4 is disposed corresponding to the processing circuit 5, for example, when the collecting device 4 is the magnet 9, the processing circuit 5 employs the hall sensor 8, and the position of the magnet 9 corresponds to the position of the hall sensor 8. When the collecting device 4 is a photoelectric encoder, the processing circuit 5 adopts a photoelectric sensor.

In the measuring process, because the connecting piece intensity of connecting between fixing base 1 and the input disc 2 is lower, therefore, after input torsion, fixing base 1, input disc 2 can rotate relatively, measure through the rotation position of grating encoder among magnet 9 or the photoelectric encoder, compare in traditional torsion sensor measurement mode, when carrying out dynamic measurement, non-contact measurement usually needs two sets of sensors, and regard as the reference with one of them way sensor, and another group sensor is measured, in this scheme, because processing circuit 5 itself and fixing base 1 or input disc 2 are fixed, consequently need not extra reference, only rely on input all the way and can realize measuring.

In particular, the grating encoder may be an absolute encoder or an incremental encoder, which is not limited herein, and since the sensor itself does not perform a large angular rotation motion, the grating encoder or the magnet 9 may have an arc structure, which does not necessarily need to be a full circle, so that the volume and weight of the sensor itself can be reduced, and the cost can be reduced.

Several practical applications for the sensor are disclosed herein:

a middle shaft sensor uses the torque sensor, wherein an input disc 2 is connected with a middle shaft, and a fixed disc is fixed with a fluted disc.

A middle motor uses the torque sensor, wherein an input disc 2 is connected with a middle shaft, and a fixed disc is fixed with the output of the motor.

The wheel hub motor uses the torque sensor, wherein an input disc 2 is connected with a clamping device, and a fixed disc is fixed with the output of the motor.

The utility model relates to a torque sensor's beneficial effect does:

1)1) the design of the fixed seat, the input disc and the connecting body can adapt to various measurement principles.

3) Static or dynamic measurements can be achieved by transmitting data in a wired or wireless manner.

4) The torque can be measured only by one path of measurement input.

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and equivalent arrangements as is within the spirit and scope of the present invention.

Claims

1. The utility model provides a torque sensor, its characterized in that, includes fixing base, input dish, connector, collection system and processing circuit, its characterized in that: the fixed seat and the input disc are coaxially arranged, the fixed seat and the input disc are connected through a connector, the acquisition device is at least connected with one of the fixed seat, the input disc or the connector, and the acquisition device is connected with the processing circuit.

2. The torque sensor according to claim 1, wherein the connecting body is integrally formed with the fixing base, or the connecting body is integrally formed with the input disc, or the connecting body is a separate structure that is independently disposed, or the connecting body is disposed on both the fixing base and the input disc.

3. A torque transducer according to claim 1 or 2, wherein at least one connecting body is provided, and the connecting body may be a torsion beam, a spring, a connecting rod or a wedge.

4. The torque sensor according to claim 3, wherein when the number of the connecting bodies is two or more, the connecting bodies are uniformly arranged around the axis of the fixing base.

5. A torque transducer according to claim 1, wherein: the collecting device is a strain gauge, a magnet or a photoelectric encoder.

6. A torque transducer according to claim 1, wherein: the fixed seat and the input disc can rotate relatively.

7. A torque transducer according to claim 1, wherein: the fixed seat can be semi-covered on the circumference of the input disc or coaxially sleeved and arranged.

8. A torque transducer according to claim 1, wherein: the input disc can be semi-wrapped on the circumference of the fixed seat or coaxially sleeved and arranged.

9. A torque transducer according to claim 1, wherein: the processing circuit can directly transmit signals by means of wires or transmit signals in a wireless mode.

10. A bottom bracket torque transducer using the torque transducer according to any of claims 1-9.

11. A mid-motor characterized by using the torque sensor according to any one of claims 1 to 9.

12. An in-wheel motor, characterized in that the torque sensor according to any of claims 1-9 is used.