Torque angle sensor convenient to assemble

Abstract

The utility model discloses a torque angle sensor convenient to assemble, which belongs to the technical field of angle sensors and comprises a shell, a rear cover is connected to the bottom of the shell, a limiting cover is integrally arranged on the upper surface of the shell, and an upper rotor assembly, a first limiting part and a second limiting part are arranged in the shell. The upper rotor assembly comprises a rotor sleeve and an integrated gear arranged in the middle of an outer ring of the rotor sleeve, the first limiting part comprises a limiting wall arranged on the inner wall of the limiting cover and a first protruding block arranged below the integrated gear, and the second limiting part comprises a second protruding block arranged below the first protruding block and a lining. A rear cover protruding wall is integrally formed on the surface of one side, close to the rotor sleeve, of the rear cover in an injection molding mode and used for achieving simplified assembly and multidirectional limiting of the whole torque angle sensor.

Description

Technical Field

[0001] The utility model belongs to the technical field of angle sensors, and in particular relates to a torque angle sensor which is easy to assemble. Background Art

[0002] Torque angle sensors are mainly used to detect the magnitude of torque in rotating power systems. Existing torque angle sensors mostly use a gear transmission solution, using a large gear to drive the magnetic gear to rotate, so that the sensing chip can output a signal, and the target wheel on the upper rotor also needs to record the angle. Therefore, the two need to be combined together. The two are combined into one using a welding process, and assembly is time-consuming and labor-intensive.

[0003] Existing torque angle sensors have complex assembly relationships, resulting in complex sensor structures, insufficient compactness, and numerous assembly processes to constrain movement. Therefore, achieving simple assembly and stable connection of the sensor has become a problem to be solved. Utility Model Content

[0004] The purpose of the present invention is to provide a torque angle sensor that is easy to assemble in order to address the existing technical defects and solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a torque angle sensor that is easy to assemble, comprising a housing, a rear cover connected to the bottom of the housing, a limit cover integrally provided on the upper surface of the housing, an upper rotor assembly provided inside the housing, the upper rotor assembly comprising a rotor sleeve, an integrated gear provided in the middle of the outer ring of the rotor sleeve, and a first limit portion and a second limit portion;

[0006] The first limiting portion includes a limiting wall arranged on the inner wall of the limiting cover and a first protrusion arranged below the integrated gear. The second limiting portion includes a second protrusion and a bushing arranged below the first protrusion. The rear cover protrusion wall is integrally injection-molded on the surface of one side of the rear cover close to the rotor cover.

[0007] The present invention further describes that the upper rotor assembly is meshingly connected to a magnetic gear.

[0008] The present invention further describes that the first protrusion, the second protrusion, the bushing and the rotor sleeve are all integrally injection molded.

[0009] The present invention further describes that the bushing is located below the second protrusion, and a plurality of grooves are formed on the bottom of the bushing.

[0010] The present invention further illustrates that the cross section of the limiting wall is arranged in a right-angled trapezoidal shape, and the contact surface of the limiting wall and the first protrusion abut against each other.

[0011] The present invention further illustrates that the lower end of the limiting wall abuts against the intersection of the first protrusion and the second protrusion.

[0012] The present invention further describes that the top of the rear cover convex wall and the lower surface of the bushing are in contact with each other.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0014] The upper rotor assembly is made of one-piece injection molding. By assembling the back cover, PCB board and housing, and then meshing the magnetic gears, the sensor assembly is simple and convenient, saving a lot of assembly time.

[0015] The first limiting portion and the second limiting portion are adopted to achieve radial and axial limiting of the upper rotor assembly, thereby improving the operating stability of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This utility model Figure 1 Schematic diagram of the split structure;

[0019] Figure 3 This utility model Figure 1 Schematic diagram of the cross-section structure;

[0020] Figure 4 This utility model Figure 3 Schematic diagram of the enlarged structure of area A;

[0021] Figure 5 This utility model Figure 3 Schematic diagram of the enlarged structure of region B;

[0022] Figure 6 This utility model Figure 1 Schematic diagram of the top view structure;

[0023] In the figure: 1. Shell; 2. Back cover; 3. Rotor sleeve; 4. Magnetic gear; 5. Integrated gear; 6. Limit cover; 8. Limit wall; 9. PCB board; 10. First bump; 11. Second bump; 12. Bushing; 13. Back cover convex wall. DETAILED DESCRIPTION

[0024] The following is a non-limiting detailed description of the technical solution of the present invention in conjunction with preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0025] See also Figure 1-6 The utility model provides a technical solution: a torque angle sensor that is easy to assemble, including a shell 1, the bottom of the shell 1 is connected to a back cover 2, and the top of the shell 1 is connected to a gear cover (not shown in the figure). It is a conventional structure. The shell 1, the back cover 2 and the gear cover are assembled to form the outer cover structure of the sensor; the interior of the shell 1 is provided with an upper rotor assembly and a magnetic gear 4 that is meshed and transmission-connected with the upper rotor assembly, wherein the upper rotor assembly is an integral injection-molded part to simplify the assembly process.

[0026] refer to Figure 1 The upper rotor assembly and the upper half of the magnetic gear 4 are protruding from the top of the housing 1. The upper rotor assembly is connected to the magnetic gear 4 through meshing transmission. When the upper rotor assembly rotates, it drives the magnetic gear 4 to rotate, so that the sensing chip receives the signal to achieve the sensing effect.

[0027] The upper rotor assembly includes a rotor sleeve 3 with a hollow structure. An integrated gear 5 is provided in the middle of the outer ring of the rotor sleeve 3. The integrated gear 5 is meshed with the magnetic gear 4. A limiting cover 6 is integrally provided on the upper surface of the shell 1 outside the upper rotor assembly for connecting a gear cover not shown in the figure. In addition, the upper rotor assembly is limited in multiple directions.

[0028] Further, refer to Figure 2 - Figure 3 , the upper rotor assembly further includes a first limiting portion and a second limiting portion;

[0029] Exemplarily, the first limiting portion is used for radial limiting, and includes a limiting wall 8 provided on the inner wall of the limiting cover 6, and a first protrusion 10 provided below the integrated gear 5. The first protrusion 10 and the rotor sleeve 3 are integrally injection molded;

[0030] The second limiting portion is used for axial limiting, and includes a second protrusion 11 provided below the first protrusion 10. The second protrusion 11 is also integrally injection-molded with the rotor sleeve 3.

[0031] The rotor sleeve 3 located below the second protrusion 11 is integrally injection-molded with a bushing 12 . It should be noted that a plurality of grooves are formed at the bottom of the bushing 12 .

[0032] In addition, a rear cover convex wall 13 is integrally injection-molded on the surface of one side of the rear cover 2 close to the rotor sleeve 3. The rear cover convex wall 13 is located on the outer side of the lower end of the rotor sleeve 3 and is a certain distance away. The outer circle of the rear cover convex wall 13 is connected to a PCB board 9, which is used for signal reception and transmission.

[0033] refer to Figure 4 、 Figure 5 The cross section of the limiting wall 8 is set in a right-angled trapezoidal shape, and the contact surface of the limiting wall 8 and the first protrusion 10 abuts against each other, forming a radial limit of the housing 1 on the upper rotor assembly;

[0034] The lower end of the limiting wall 8 abuts against the intersection of the first protrusion 10 and the second protrusion 11 to complete the first axial limiting.

[0035] The top of the rear cover convex wall 13 abuts against the lower surface of the groove of the bushing 12 to complete the second axial limit, thereby achieving multiple axial limits of the housing 1 and the rear cover 2 on the upper rotor assembly;

[0036] The radial and axial limits described above can effectively prevent movement between the upper rotor assembly and the PCB 9 , thereby improving the connection stability between the sensor components and further improving the sensor accuracy.

[0037] In this embodiment, the upper rotor assembly is pre-molded as an integral part, and then the rear cover 2, PCB board 9, and upper rotor assembly are assembled. The housing 1 radially limits the upper rotor assembly, and the housing 1 and rear cover 2 axially limit the upper rotor assembly. The magnetic gear 4 is then meshed with the integrated gear 5 to achieve simple assembly of the sensor.

[0038] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only used to facilitate the description of the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0039] Finally, it should be pointed out that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A torque angle sensor that is easy to assemble, comprising a housing (1), wherein the bottom of the housing (1) is connected to a back cover (2), the upper surface of the housing (1) is integrally provided with a limit cover (6), an upper rotor assembly is provided inside the housing (1), and the upper rotor assembly comprises a rotor sleeve (3) and an integrated gear (5) provided in the middle of the outer ring of the rotor sleeve (3), characterized in that: The upper rotor assembly further comprises: a first limiting portion, the first limiting portion comprising a limiting wall (8) provided on an inner wall of the limiting cover (6) and a first protrusion (10) provided below the integrated gear (5); a second limiting portion, the second limiting portion comprising a second protrusion (11) and a bushing (12) arranged below the first protrusion (10); A rear cover convex wall (13) is integrally injection-molded on a surface of one side of the rear cover (2) close to the rotor sleeve (3).

2. The torque angle sensor according to claim 1, wherein: The upper rotor assembly is meshingly connected to a magnetic gear (4).

3. The torque angle sensor according to claim 1, wherein: The first protrusion (10), the second protrusion (11), the bushing (12) and the rotor sleeve (3) are all integrally injection-molded.

4. The torque angle sensor according to claim 1, wherein: The bushing (12) is located below the second protrusion (11), and a plurality of grooves are provided on the bottom of the bushing (12).

5. The torque angle sensor that is easy to assemble according to claim 1, characterized in that: The cross section of the limiting wall (8) is arranged in a right-angled trapezoidal shape, and the contact surface of the limiting wall (8) and the first protrusion (10) abuts against each other.

6. The torque angle sensor that is easy to assemble according to claim 1, characterized in that: The lower end of the limiting wall (8) abuts against the intersection of the first protrusion (10) and the second protrusion (11).

7. The torque angle sensor that is easy to assemble according to claim 1 or 6, characterized in that: The top of the rear cover convex wall (13) and the lower surface of the bushing (12) abut against each other.

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