一种线性马达

Abstract

本实用新型提供一种线性马达，包括壳体、电磁组件、永磁组件以及可动体组件；壳体包括设置在壳体上部的两个活动部以及设置在壳体下部的基座，壳体还包括弹性组件，两个活动部通过弹性组件与基座固定连接且一体成型；活动部与基座之间开设有容纳腔，永磁组件设置有两个并分别固定连接在两个活动部的下方，可动体组件设置有两个并分别固定连接在两个活动部的上方，电磁组件设置在容纳腔内，永磁组件朝向电磁组件并与电磁组件之间设置有空隙；容纳腔内相对的两侧设置有沿线下马达厚度方向延伸的第二凹槽，电磁组件上设置有与第二凹槽对应的第二定位块，当电磁组件从壳体的侧面安装进容纳腔时，第二定位块沿着第二凹槽卡接，以定位电磁组件的位置。

Claims

1. A linear motor characterized by, Includes housing, electromagnetic components, permanent magnet components, and movable body components; The housing includes two movable parts disposed on the upper part of the housing and a base disposed on the lower part of the housing. The housing also includes an elastic component. The two movable parts are fixedly connected to the base through the elastic component and are integrally formed. The bottom surface of the base is provided with at least one fourth connection hole for connecting the base to an external device. A receiving cavity is provided between the movable part and the base. Two permanent magnet components are provided and fixedly connected to the bottom of the two movable parts respectively. Two movable body components are provided and fixedly connected to the top of the two movable parts respectively. The electromagnetic component is provided in the receiving cavity. The permanent magnet component faces the electromagnetic component and has a gap between it and the electromagnetic component. The cavity contains two opposite sides with second grooves extending along the thickness direction of the linear motor. The electromagnetic component has a second positioning block corresponding to the second groove. When the electromagnetic component is installed into the cavity from the side of the housing, the second positioning block engages along the second groove to position the electromagnetic component.

2. The linear motor according to claim 1, wherein The receiving cavity penetrates the housing in the thickness direction of the linear motor. The receiving cavity includes a first end and a second end. The first end is open, and a first limiting part is provided at the lower part of the second end. During installation, the electromagnetic component enters the receiving cavity from the first end and is positioned by the first limiting part of the second end. Both the first end and the second end of the receiving cavity are provided with outwardly extending first connecting portions for connecting the linear motor to external devices.

3. The linear motor according to claim 2, wherein The first connecting portions are respectively disposed on the opposite sides of the first end and the opposite sides of the second end. The first connecting portions are integrally formed with the base and are located on the outside of the electromagnetic component. The movable part includes a first movable part and a second movable part, which can reciprocate along the length direction of the linear motor; when the linear motor is started, the first movable part and the second movable part move in opposite directions along the length direction of the linear motor, and the first connecting part is connected to an external device to fix the base relative to the first movable part and the second movable part.

4. The linear motor according to claim 3, wherein The receiving cavity includes a first cavity disposed in the movable part and a second cavity disposed in the base. The permanent magnet assembly is connected in the first cavity, and the electromagnetic assembly is connected in the second cavity. The first cavity includes a first mounting cavity in the first movable part and a second mounting cavity in the second movable part. The permanent magnet assembly includes a first permanent magnet and a first yoke disposed in the first mounting cavity, and a second permanent magnet and a second yoke disposed in the second mounting cavity. The first permanent magnet is fixedly connected to the first yoke and disposed below the first yoke, and the second permanent magnet is fixedly connected to the second yoke and disposed below the second yoke. The first permanent magnet and the second permanent magnet are arranged facing the electromagnetic assembly. When the electromagnetic assembly is energized, the magnetic field of the electromagnetic assembly controls the first permanent magnet and the second permanent magnet to move in the length direction of the linear motor, thereby driving the first movable part and the second movable part to move.

5. The linear motor according to claim 4, wherein The first mounting cavity and the second mounting cavity are each provided with at least one first positioning block in the vertical or horizontal direction. The first positioning block protrudes inward relative to the inner wall surface of the first mounting cavity and the second mounting cavity. The first magnetic yoke and the second magnetic yoke are provided with a first groove corresponding to the first positioning block. When the permanent magnet assembly is installed into the first cavity, the first positioning block of the first mounting cavity and the second mounting cavity cooperate with the first groove of the first magnetic yoke and the second magnetic yoke to position the permanent magnet assembly. The second cavity has a second groove extending through the thickness direction of the linear motor on both opposite sides. The electromagnetic component has a second positioning block corresponding to the second groove. When the electromagnetic component is installed in the second cavity, the second positioning block enters the second cavity along the second groove to position the electromagnetic component.

6. The linear motor according to claim 4, wherein The upper surface of the first movable part is provided with a first mounting groove that extends downward and is recessed, and the upper surface of the second movable part is provided with a second mounting groove that extends downward and is recessed. The movable body assembly includes a first movable body and a second movable body. The first movable body includes a first mounting part, a first base, and a first shaft. The first shaft, the first base, and the first mounting part are connected and fixed in sequence from top to bottom. The first base corresponds to the second mounting groove and is engaged in the second mounting groove. When the second movable part moves, it drives the first movable body to move in the same direction. The first shaft is used to connect to external devices to drive the external devices to move. The second movable body includes a second mounting part, a second base and a second shaft. The second shaft, the second base and the second mounting part are connected and fixed from top to bottom. The second base corresponds to the first mounting groove and is engaged in the first mounting groove. A second positioning block is provided in the middle of the first installation groove. The second installation part is provided as a left installation part and a right installation part. The left installation part is connected to the right installation part through the second base. The left installation part, the second base, and the right installation part form a U-shaped structure to define a clearance groove on the second base. The left installation part and the right installation part are respectively disposed on both sides of the second positioning block and are snap-connected to the first installation groove. The first base passes through the clearance groove and is arranged crosswise with the second base. When the first movable part moves, it drives the second movable body to move in the same direction. The second shaft body is used to connect an external device to drive the external device to move.

7. The linear motor according to claim 6, wherein The movable body assembly further includes a third movable body. The third movable body includes a third base and a third shaft body. The third shaft body is disposed at one end of the third base. An installation hole vertically penetrating the third base is defined at the other end of the third base opposite to the third shaft body. The inner wall of the installation hole is provided with a third groove and a limiting block. The limiting block protrudes from the inner wall of the installation hole and is inclined from the lower bottom surface to the upper surface of the installation hole. A third positioning block corresponding to the third groove and a positioning plate disposed on the upper part of the second base are provided on the second base of the second movable body. The third positioning block is disposed on the side surface of the positioning plate. The third movable body is sleeved on the second base of the second movable body through the installation hole. When the third movable body is sleeved into the second base from top to bottom, the third groove is connected in cooperation with the third positioning block, and the positioning plate moves along the limiting block and passes through the limiting block, so that the positioning plate is snap-connected above the limiting block.

8. The linear motor according to claim 6, wherein First connection holes vertically penetrating are provided at the bottoms of the first installation groove and the second installation groove. Second connection holes corresponding to the first connection holes are provided on the first installation part and the second installation part. Third connection holes corresponding to the first connection holes are provided on the first yoke and the second yoke. The linear motor further includes a first connection bolt. The first connection bolt sequentially passes through the second connection hole, the first connection hole, and the third connection hole, so that the second movable body and the first yoke, the first permanent magnet are fixedly connected, and the first movable body is fixedly connected to the second yoke and the second permanent magnet. When the electromagnetic assembly is powered on, the magnetic field of the electromagnetic assembly controls the movement of the first permanent magnet and the second permanent magnet to drive the first movable part, the second movable body, the second movable part, and the first movable body to move.

9. The linear motor according to claim 3, wherein The elastic component includes elastic plate assemblies respectively disposed at both ends of the housing. The upper ends of the elastic plate assemblies are fixedly connected to the movable part, and the lower ends of the elastic plate assemblies are fixedly connected to the base. The upper end of the elastic plate assembly is respectively provided with a first elastic part and a second elastic part. The first elastic part is fixedly connected to the first movable part, and the second elastic part is fixedly connected to the second movable part, which is used to limit the movement stroke of the first movable part and the second movable part and to reset the first movable part and the second movable part. The elastic plate assembly includes vertically arranged elastic plates. At least two elastic plates are provided, and an elastic cavity is formed between two adjacent elastic plates.

10. The linear motor according to claim 9, wherein The elastic component further includes coupling springs respectively arranged outside the elastic plate assembly. The first end of the coupling spring is fixedly connected to the first elastic part, and the second end of the coupling spring is fixedly connected to the second elastic part. A downwardly extending coupling part is formed between the first end and the second end of the coupling spring. The coupling spring is used to limit the movement stroke of the first movable part and the second movable part and to reset the first movable part and the second movable part.

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