CN202732652U - Sensing shaft of torque sensor - Google Patents
Sensing shaft of torque sensor Download PDFInfo
- Publication number
- CN202732652U CN202732652U CN 201220330794 CN201220330794U CN202732652U CN 202732652 U CN202732652 U CN 202732652U CN 201220330794 CN201220330794 CN 201220330794 CN 201220330794 U CN201220330794 U CN 201220330794U CN 202732652 U CN202732652 U CN 202732652U
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- shaft
- torque sensor
- input
- axis
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Abstract
The utility model relates to the technical field of torque sensors, in particular to a sensing shaft of a torque sensor. The sensing shaft of the torque sensor comprises a shaft body of which the interior is of a hollow cylinder shape, a plurality of bulges are formed on the outer side of the shaft body, a clamping piece used for clamping and fixing an input/output shaft of an externally connected rotation part is arranged on the inner side of the shaft body, and the sensing shaft can be clamped and fixed with the input/output shaft of the externally connected rotation part through the clamping piece, therefore, the sensing shaft and the input/output shaft of the externally connected rotation part are of a split type structure, and the sensing shaft can be separately made into a standardized structure to be applicable to the installation of the input/output shafts of the externally connected rotation parts in different specifications, so that the production technology of the torque sensor is simplified, and the production cost of the torque sensor is lowered.
Description
Technical field
The utility model relates to the torque sensor technical field, relates in particular to a kind of inductive axis of torque sensor.
Background technique
Torque sensor is EPS(Electronic Power Steering) constituent element of system, although the structure member of its EPS system of different automobiles is different, but each constituent elements still duplicates substantially, the powered assistance motorist that the EPS system mainly utilizes motor to produce carries out turning to of power, therefore, torque (moment of torsion) sensor is exactly requisite parts wherein.
It such as the Chinese patent application of application before the applicant number is 201110156629.1 patent of invention, a kind of torque sensor is disclosed, it comprises shell, two groups of inductor coils and magnetic shield, shell is the cylindric of inner hollow, two groups of inductor coils be parallel to each other and the suit of isolating in the enclosure, magnetic shield is sleeved on the innermost layer of shell, the position that magnetic shield is corresponding with two groups of inductor coils is respectively arranged with two groups of sensor port, two groups of sensor port are arranged along the sensitive surface tiling of inductor coil with certain interval by several separate induction mouths, longitudinal center's axis direction of the induction opening's edge magnetic shield in two groups of sensor port is staggered, the twisting of turning round axle causes the variation of corresponding inductor coil internal electrical sensibility reciprocal by two groups of sensor port, the outer end of shell is provided with the terminal that links to each other with peripheral control unit, torque sensor is sent to peripheral control unit by terminal with the difference of inductance value in two groups of inductor coils, and peripheral control unit is further judged the power-assisted of reversing of correspondence that needs provide according to torque.
But, the axle of turning round of above-mentioned torque sensor is the integral type structure, inductive axis (being provided with convex portion) and the input/shaft (the central cylindrical shaped part is divided) of namely turning round axle are formed in one, and input/shaft is generally the input/shaft of external rotatable parts, so, this inductive axis of turning round axle need in advance according to external rotatable parts specification (for example: the input/shaft of different size) be shaped in the input/shaft of external rotatable parts, cause the production technology of torque sensor comparatively complicated, cost of production is higher.
The model utility content
The purpose of this utility model is to provide for the deficiencies in the prior art a kind of inductive axis of torque sensor, input/the shaft of this inductive axis and external rotatable parts is split-type structural, thereby has simplified the production technology and the cost of production that has reduced torque sensor of torque sensor.
To achieve these goals, the utility model provides a kind of inductive axis of torque sensor, comprise the axis body cylindraceous that is inner hollow, the outside of described axis body forms a plurality of projections, and described a plurality of projection is evenly spaced apart along the outside of described axis body at circumference; The inboard of described axis body is provided with the shackle member be used to the input/shaft that connects and fixes external rotatable parts.
Preferably, described shackle member is inwardly protruded projection, the input of this projection and external rotatable parts/shaft coupling.
Preferably, the outer race of a plurality of projections of described axis body is equipped with magnetic shield, and magnetic shield offers a plurality of sensor port.
Preferably, described magnetic shield is the duralumin, hard alumin ium alloy magnetic shield.
The utility model beneficial effect is: inductive axis of the present utility model, comprise the axis body cylindraceous that is inner hollow, and the outside of axis body forms a plurality of projections, and a plurality of projection is evenly spaced apart along the outside of axis body at circumference; The inboard of axis body is provided with the shackle member be used to the input/shaft that connects and fixes external rotatable parts, inductive axis of the present utility model can be connected and fixed by the input/shaft of shackle member and external rotatable parts, therefore, input/the shaft of inductive axis of the present utility model and external rotatable parts is split-type structural, make inductive axis of the present utility model can make separately standardized structural, installation with the input/shaft of the external rotatable parts that are fit to different size, be after inductive axis of the present utility model can be produced separately, be installed on again the input/shaft of external rotatable parts, thereby simplified the production technology and the cost of production that has reduced torque sensor of torque sensor.
Description of drawings
Fig. 1 is the decomposing schematic representation of the inductive axis of torque sensor of the present utility model.
Fig. 2 is the plan view that the inductive axis of torque sensor of the present utility model conceals magnetic shield.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Please refer to Fig. 1, Fig. 2, the inductive axis of torque sensor of the present utility model comprises the axis body cylindraceous 1 that is inner hollow, and the outside of axis body 1 forms a plurality of protruding 2, and a plurality of protruding 2 outsides along axis body 1 are evenly spaced apart at circumference; The inboard of axis body 1 is provided with the shackle member 3 be used to the input/shaft that connects and fixes external rotatable parts, certainly, clamping position on the input/shaft of this shackle member 3 and external rotatable parts is complementary, and inductive axis of the present utility model can be connected and fixed by the input/shaft of shackle member 3 with external rotatable parts.
In the present embodiment, shackle member 3 is inwardly protruded projection, the input of this projection and external rotatable parts/shaft coupling, for example: the input/shaft of external rotatable parts offers the groove that is complementary with described projection, make the input/shaft of inductive axis of the present utility model and external rotatable parts form the combination of concavo-convex teeth groove, thereby the input/shaft of inductive axis of the present utility model and external rotatable parts is connected and fixed securely.Certainly, the input/shaft of inductive axis of the present utility model and external rotatable parts also can be other clamping fixation structure, and for example: for groove is set, and the input/shaft of external rotatable parts is the projection that coupling is set on the inductive axis of the present utility model; Namely be not limited only to the clamping fixation structure that the present embodiment is selected.
Wherein, a plurality of protruding 2 outer race of axis body 1 is equipped with magnetic shield 4, and magnetic shield 4 offers a plurality of sensor port 5; Magnetic shield 4 is the duralumin, hard alumin ium alloy magnetic shield, and the duralumin, hard alumin ium alloy magnetic shield is for adopting the duralumin, hard alumin ium alloy material to make by three-dimensional impact briquetting technology, and its symmetry properties is high, and is easy to install, and cost is low.
The production technology of the inductive axis of the utility model torque sensor, this technique comprises the following steps:
A, with raw material powder by powder metallurgy straight forming technique make the original shape inductive axis (be moulding shaft body 1, the projection 2, shackle member 3);
B, the size of original shape inductive axis is carried out fine finishing by fine-processing technique, to reach relative dimensions precision and characteristic requirements;
C, surface treatment is carried out by process of surface treatment in the surface of original shape inductive axis.
Wherein, the raw material powder in the steps A is iron powder or ferroalloy powder, to make the inductive axis of iron or ferro-alloy;
D, on periphery suit magnetic shield 4.
Wherein, the powder metallurgy straight forming technique in the steps A comprises mould punching moulding process and sintering process, and raw material powder is through mould punching moulding process and after the impact briquetting, again through sintering process and sintering is made the original shape inductive axis.After being iron powder or ferroalloy powder process mould punching and sintering, make the original shape inductive axis.
Wherein, the fine-processing technique among the step B is finishing process or machine flinishing technique, and certainly, according to needs of production, described fine-processing technique also can be other technique, is not limited only to finishing process or machine flinishing technique that the present embodiment is selected.
Wherein, process of surface treatment among the step C is blackening, oxidation technology or electroplating technology, certainly, and according to needs of production, described process of surface treatment also can be other technique, is not limited only to blackening, oxidation technology or electroplating technology that the present embodiment is selected.
In sum, inductive axis of the present utility model can be widely used in torque sensor, torque sensor, speed probe, angle transducer etc.The parts such as inductive axis of the present utility model and inductor coil are cooperated be installed on the input/shaft of corresponding external rotatable parts, when the input/shaft of external rotatable parts relatively rotates, can detect in time relative rotation, thereby be converted into the measurement to moment of torsion, angle or angular velocity.Therefore, the split-type structural of the input/shaft of inductive axis of the present utility model and external rotatable parts, make inductive axis of the present utility model can make separately standardized structural, with the installation of the input/shaft of the external rotatable parts that are fit to different size, thereby simplified the production technology of torque sensor and reduced the cost of production of torque sensor.
Should be noted that at last; above embodiment is only in order to illustrate the technical solution of the utility model; but not to the restriction of the utility model protection domain; although with reference to preferred embodiment the utility model has been done to explain; those of ordinary skill in the art is to be understood that; the technical solution of the utility model is made amendment or is equal to replacement, all belong to protection domain of the present utility model.
Claims (4)
1. the inductive axis of a torque sensor, it is characterized in that: comprise the axis body cylindraceous that is inner hollow, the outside of described axis body forms a plurality of projections, and described a plurality of projection is evenly spaced apart along the outside of described axis body at circumference; The inboard of described axis body is provided with the shackle member be used to the input/shaft that connects and fixes external rotatable parts.
2. the inductive axis of torque sensor according to claim 1, it is characterized in that: described shackle member is inwardly protruded projection, the input of this projection and external rotatable parts/shaft coupling.
3. the inductive axis of torque sensor according to claim 1, it is characterized in that: the outer race of a plurality of projections of described axis body is equipped with magnetic shield, and magnetic shield offers a plurality of sensor port.
4. the inductive axis of torque sensor according to claim 3, it is characterized in that: described magnetic shield is the duralumin, hard alumin ium alloy magnetic shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220330794 CN202732652U (en) | 2012-07-09 | 2012-07-09 | Sensing shaft of torque sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220330794 CN202732652U (en) | 2012-07-09 | 2012-07-09 | Sensing shaft of torque sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202732652U true CN202732652U (en) | 2013-02-13 |
Family
ID=47658354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220330794 Expired - Lifetime CN202732652U (en) | 2012-07-09 | 2012-07-09 | Sensing shaft of torque sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202732652U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758833A (en) * | 2012-07-09 | 2012-10-31 | 王成 | Inductive shaft of torque sensor and production process thereof |
| CN104269948A (en) * | 2014-09-24 | 2015-01-07 | 宁波捷成轴业有限公司 | Magnetic isolation rotating shaft with low workload |
| CN107923804A (en) * | 2015-05-04 | 2018-04-17 | 彼得·格罗彻 | The method of mechanical organ and manufacture mechanical organ with sensor device |
-
2012
- 2012-07-09 CN CN 201220330794 patent/CN202732652U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758833A (en) * | 2012-07-09 | 2012-10-31 | 王成 | Inductive shaft of torque sensor and production process thereof |
| CN104269948A (en) * | 2014-09-24 | 2015-01-07 | 宁波捷成轴业有限公司 | Magnetic isolation rotating shaft with low workload |
| CN107923804A (en) * | 2015-05-04 | 2018-04-17 | 彼得·格罗彻 | The method of mechanical organ and manufacture mechanical organ with sensor device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUIZHOU ANKEYUAN MAGNETIC DEVICE CO., LTD. Free format text: FORMER OWNER: WANG CHENG Effective date: 20141009 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 523000 DONGGUAN, GUANGDONG PROVINCE TO: 516166 HUIZHOU, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141009 Address after: Banqiao Industrial Zone Guangdong city Huizhou province 516166 Tai Mei town in Boluo County Patentee after: HUIZHOU ANKEYUAN MAGNETIC DEVICES Co.,Ltd. Address before: 523000 Guangdong province Dongguan Nancheng Garden Block B B-704 Dongjun Lake home Patentee before: Wang Cheng |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
|
| CX01 | Expiry of patent term |