Linear actuator with stable structure
A linear actuator, a technology with stable structure, applied in the direction of transmission, transmission parts, belts/chains/gears, etc., can solve poor user experience, large movement clearance of limit bearings, and unstable structure of linear actuators and other issues, to achieve structural stability, prevent axial movement, and improve user experience
Pending Publication Date: 2020-05-08
ZHEJIANG JIECHANG LINEAR MOTION TECH
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Problems solved by technology
[0003] However, because the width of the groove for installing the circlip is slightly larger than the thickness of the circlip for the hole during processing, the two circlips for the hole sway in the groove, causing the limit bearing to be between the circlip for the two holes. Shaking, so that when the linear actuator is working, there is a large movement gap in the limit bearing along the axial direction of the screw, and the screw and the screw nut installed on the screw will shake, making the linear actuator Unstable structure, poor user experience
Method used
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Embodiment 1
[0031] A structurally stable linear actuator such as Figure 1 to Figure 5 As shown, it includes a linear expansion device, a deceleration device and a driving device, and the driving device drives the linear expansion device to expand and contract through the deceleration device. The linear expansion device includes an outer tube 1, a screw 2 arranged in the outer tube 1, a screw nut 3 and a limit bearing 4 sleeved on the screw 2, and the reduction device includes a housing 5 installed on the outer tube 1, The limit bearing 4 includes a bearing inner ring 41 and a bearing outer ring 42. The two sides of the limit bearing 4 are respectively provided with a limit piece and a positioning ring 6. The position bearing 4 is used to limit the position and prevent the position limit bearing 4 from moving along the axial direction of the screw rod 2. The limit bearing 4 is pressed against the limit piece in the axial direction, so that the limit piece is against the inner ring 41 of ...
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The invention discloses a linear actuator with stable structure. The linear actuator comprises a linear telescopic device and a speed reducing device, the linear telescopic device comprises an outer pipe, a lead screw arranged in the outer pipe, a lead screw nut and a limiting bearing connected to the lead screw in a sleeving mode, the speed reducing device comprises a shell installed on the outerpipe, the limiting bearing comprises a bearing inner ring and a bearing outer ring, a limiting piece abutting against the bearing inner ring and a positioning ring abutting against the bearing outerring are arranged on the two sides of the limiting bearing respectively, the limiting piece is fixed to the lead screw, and the shell compresses the limiting bearing on the limiting piece in the axialdirection of the lead screw through the positioning ring. According to the linear actuator, the shell fixed to the outer pipe extrudes the bearing outer ring in the direction of the limiting piece through the positioning ring, the limiting bearing is prevented from moving in the axial direction of the lead screw, namely, the limiting bearing is prevented from moving in the axial direction, the lead screw and the lead screw nut installed on the lead screw are prevented from shaking, the structure of the linear actuator is stable, and the use experience is improved.
Description
technical field [0001] The invention belongs to the field of linear actuators, in particular to a linear actuator with stable structure. Background technique [0002] At present, linear actuators usually use a circlip for the hole to limit the limit bearing sleeved on the screw rod, that is, a card slot is provided on the inner wall of the outer tube, and then a hole partially located in the card slot is provided in the card slot With a jumper, the two end faces of the limit bearing are respectively offset with the hole with a jumper, so that the limit bearing is installed on the outer tube, and the limit bearing is limited along the axial direction of the outer tube. [0003] However, because the width of the groove for installing the circlip is slightly larger than the thickness of the circlip for the hole during processing, the two circlips for the hole sway in the groove, causing the limit bearing to be between the circlip for the two holes. Shaking, so that when the li...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16H37/12F16H25/24F16H57/021F16H57/023
CPCF16H37/124F16H25/24F16H57/021F16H57/023
Inventor 胡仁昌陆小健卫寿亮
Owner ZHEJIANG JIECHANG LINEAR MOTION TECH