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CN-224204900-U - Linear motor with bidirectional position detection

CN224204900UCN 224204900 UCN224204900 UCN 224204900UCN-224204900-U

Abstract

The utility model discloses a linear motor for detecting bidirectional positions, which comprises a linear motor body, a housing, a first sensor and a first sensor, wherein the housing is sleeved on the linear motor body and is fixed with the linear motor body, the first sensor is connected with the housing, the first sensor is connected with a screw rod assembly in the linear motor body, the first sensor is arranged along the axial direction of the screw rod assembly, the first sensor is used for detecting the first position of the screw rod assembly when being matched with the first sensor, the linear motor further comprises a second sensor and a second sensor, a part of the second sensor is matched with the housing, the second sensor is connected with the screw rod assembly, the second sensor is arranged along the radial direction of the screw rod assembly, and the second sensor is used for detecting the second position of the screw rod assembly when being matched with the second sensor. The utility model can detect the retraction and extension strokes of the screw assembly.

Inventors

  • WANG ZHIYONG

Assignees

  • 海顿直线电机(常州)有限公司

Dates

Publication Date
20260505
Application Date
20250402

Claims (5)

  1. 1. The utility model provides a linear electric motor of two-way position detection, including linear electric motor body (1), housing (2), first sensor (3), first inductor (4), housing (2) cover is on linear electric motor body (1) and fixed with linear electric motor body (1), first sensor (3) are connected with housing (2), first inductor (4) are connected with screw rod subassembly (1 a) in linear electric motor body (1), first inductor (4) are arranged along the axial of screw rod subassembly (1 a), first position that is used for detecting screw rod subassembly (1 a) when first inductor (3) cooperate with first inductor (4), a serial communication port, still include second sensor (5), second inductor (6), a portion and housing (2) cooperation of second sensor (5), second inductor (6) are connected with screw rod subassembly (1 a), radial arrangement of second inductor (6) along screw rod subassembly (1 a), second sensor (5) are used for detecting screw rod subassembly (1 a) when second inductor (6) cooperate with second inductor (6).
  2. 2. The linear motor for bidirectional position detection according to claim 1, wherein the screw assembly (1 a) is provided with a first mounting hole (1 b) and a second mounting hole (1 c), the first mounting hole (1 b) is arranged along the axial direction of the screw assembly (1 a), the second mounting hole (1 c) is arranged along the radial direction of the screw assembly (1 a), the first sensor (4) is matched with the first mounting hole (1 b), and the second sensor (6) is matched with the second mounting hole (1 c).
  3. 3. The linear motor for bidirectional position detection according to claim 1, wherein a second through hole (2 b) is provided on the peripheral surface of the housing (2), and the second sensor (5) includes a second sensor body (5 a) and a second wire (5 b), and the second wire (5 b) is mated with the second through hole (2 b).
  4. 4. A linear motor for bidirectional position detection according to any one of claims 1 to 3, further comprising a mounting member (7) for mounting the second sensor (5), one end of the linear motor body (1) being provided with an extension sleeve (1 d), the screw assembly (1 a) passing through the extension sleeve (1 d), the mounting member comprising a first mounting sleeve (7 a), a second mounting sleeve (7 b), the first mounting sleeve (7 a) being fitted over the extension sleeve (1 d) and secured to the extension sleeve (1 d), the second mounting sleeve (7 b) being located outside the axial end face of the extension sleeve (1 d), the other part of the second sensor (5) being located within the second mounting sleeve (7 b) and cooperating with the second mounting sleeve (7 b).
  5. 5. The linear motor for bidirectional position detection according to claim 4, wherein the second mounting sleeve (7 b) is provided with a clamping groove (7 c), at least one part of the clamping groove (7 c) is conical, and the other part of the second sensor (5) is matched with the clamping groove (7 c).

Description

Linear motor with bidirectional position detection Technical Field The utility model relates to the technical field of motors, in particular to a linear motor with bidirectional position detection. Background The fixed shaft type linear motor is an effective linear transmission mechanism, can reduce devices such as sliding rails, belt wheels and the like in the linear transmission mechanism, is greatly convenient for customers to use, and is widely applied to linear motion schemes. The screw rod assembly and the nut driving structure are used in the motor, the rotation motion of the nut is directly converted into the linear motion of the screw rod assembly, and the structural design of the motor is simplified. The device has stable quality, small volume, large thrust and wide market application, and various step sizes are selectable. When the fixed shaft type linear motor is adopted as a driver in industrial production, the stroke of the screw rod assembly in the fixed shaft type linear motor is usually required to be controlled, the current mode is that a housing is arranged on a linear motor body, a first sensor is arranged on the housing, a first sensing part is arranged at the end part of the screw rod assembly in the linear motor body, after the screw rod assembly is retracted, the first sensing part on the screw rod assembly is detected by the first sensor, the motor body is controlled by a controller to stop working, and the screw rod assembly stops retracting, so that the screw rod assembly is prevented from generating a damage acting force to the housing. In the above structure, only the retraction of the screw assembly is controlled, and the stroke of the screw assembly when the screw assembly extends out is controlled, for example, when the screw assembly extends out to the maximum stroke, the screw assembly is propped against the limit part at the front end of the motor shell, but because no stroke control exists, the motor body is still in a working state at this time, so that the rotor assembly, the screw and the screw assembly in the motor body are damaged. Disclosure of utility model The utility model provides a linear motor with bidirectional position detection, which can detect the retraction and extension strokes of a screw assembly. The technical scheme for solving the technical problems is as follows: The utility model provides a linear electric motor of two-way position detection, including the linear electric motor body, the housing, a first sensor, a first inductor, the housing cover is on the linear electric motor body and fixed with the linear electric motor body, a first sensor is connected with the housing, a first inductor is connected with the screw rod subassembly in the linear electric motor body, a first sensor is arranged along the axial of screw rod subassembly, a first position that is used for detecting the screw rod subassembly when first sensor and first inductor cooperate still includes the second sensor, the second inductor, a part of second sensor cooperates with the housing, the second inductor is connected with the screw rod subassembly, a second sensor is arranged along the radial of screw rod subassembly, a second position that is used for detecting the screw rod subassembly when second sensor and second inductor cooperate. Further, be equipped with first mounting hole, second mounting hole on the screw rod subassembly, first mounting hole is arranged along the axial of screw rod subassembly, and the second mounting hole is arranged along the radial of screw rod subassembly, first inductor and first mounting hole cooperation, second inductor and second mounting hole cooperation. Further, a second through hole is formed in the peripheral surface of the housing, the second sensor comprises a second sensor body and a second wire, and the second wire is matched with the second through hole. Further, the device also comprises a mounting part for mounting the second sensor, one end of the linear motor body is provided with an extension sleeve, the screw rod component passes through the extension sleeve, the mounting part comprises a first mounting sleeve and a second mounting sleeve, the first installation sleeve is sleeved on the extension sleeve and fixed with the extension sleeve, the second installation sleeve is positioned on the outer side of the axial end face of the extension sleeve, and the other part of the second sensor is matched with the second installation sleeve and positioned in the second installation sleeve. Further, a clamping groove is formed in the second mounting sleeve, at least one part of the clamping groove is conical, and the other part of the second sensor is matched with the clamping groove. When the linear motor body rotates positively to enable the screw rod assembly to move linearly from left to right (namely, the screw rod assembly retracts), the screw rod assembly carries the first sensor and the second sensor to move linearly from le