Rotary lifting device capable of eliminating transmission clearance

Abstract

The utility model discloses a rotary lifting device for eliminating a transmission gap, which belongs to the field of mechanical transmission, and comprises a motor, a screw rod, a guide rod, a screw rod nut, a spring, a connecting rod, a rotary frame and the like, the rotary motion of the motor is converted into linear motion through the screw rod, and the linear motion is converted into the rotary motion of a rotary piece through the connecting rod. And meanwhile, the transmission clearance is eliminated by using the spring and the O-shaped ring. The transmission mechanism is arranged below the rotating shaft, space is saved, noise is reduced, the problems that in the prior art, a transmission mechanism is large in occupied space, noise is likely to be generated, and shaking is caused by gaps are solved, and the transmission mechanism is suitable for rotating lifting scenes where the transmission mechanism needs to be hidden and stable operation is required.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical transmission technical field especially relates to a kind of rotary lifting device for eliminating transmission gap, improve the stability of operation. BACKGROUND

[0002] In recent years, with the improvement of living standards, people have higher requirements on appearance effect while meeting product usability. Many products are designed to realize height adjustment of functional components by controlling transmission mechanism or hide to the platform under function in order to improve the appearance and use effect of products. The rotary lifting device provided by the current manufacturers is realized by installing motor or motor plus gearbox on rotating shaft.

[0003] But such design has the following defects: 1. Transmission mechanism will increase the size of rotating shaft part, if the rotating load is larger, the occupied space is larger, which has a great influence on product appearance design, if it is hidden to the scene under the platform, the influence on appearance is greater; 2. Motor and gearbox will have certain noise when running, which is adjacent to functional components, affecting user experience; 3. When using the above rotary lifting device, the backlash of gearbox and transmission gap will cause the functional components of rotary lifting to shake when the external environment shakes, which will affect the use experience. CONTENT OF UTILITY MODEL

[0004] The utility model aims at overcoming the above defects, and provides a rotary lifting device with small space occupation, low noise and transmission gap elimination.

[0005] The utility model aims at overcoming the above defects, and provides a rotary lifting device with small space occupation, low noise and transmission gap elimination.

[0006] The spring is installed on the screw rod, and the spring is installed between the screw rod nut one and the screw rod nut two.

[0007] The top end of the screw rod nut one is connected with a hole, and both sides of the hole are provided with inner grooves, and O-rings are arranged in the inner grooves.

[0008] The connecting hole of the convex rod end is provided with inner grooves on both sides, and O-rings are arranged in the inner grooves.

[0009] The beneficial effects of the utility model are:

[0010] 1. In the utility model, the motor converts the rotary motion into the linear motion of the screw rod nut through the screw rod, the screw rod nut converts the linear motion into the rotary motion of the rotary piece through the connecting rod, the motor and other transmission mechanisms are arranged below the rotary frame, the space on the side of the rotating shaft is avoided, and the platform on which the rotary piece is arranged is also avoided, so that the transmission mechanism is hidden, the appearance level is improved, and the noise of the motor and other transmission mechanisms transmitted to the outside of the platform is reduced.

[0011] 2. The spring arranged between the screw rod nut one and the screw rod nut two always generates the outward thrust to the two screw rod nuts in the process that the screw rod nut one and the screw rod nut two are static and move, and the gap between the screw rod nut and the screw rod is eliminated; the O-rings are arranged, and the gap between the pin shaft or the rotating shaft and the cylindrical hole matched with the pin shaft or the rotating shaft is eliminated; the two gap-eliminating measures act simultaneously, the stability of the operation of the whole rotary lifting device is improved, and the rotary frame is not easy to shake in the complex environment with external vibration. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the whole structure schematic view of the utility model.

[0013] Figure 2 It is the front view of the utility model.

[0014] Figure 3 It is the A direction structure schematic view of Figure 2

[0015] Figure 4 It is the B direction structure schematic view of Figure 2

[0016] Mark explanation:

[0017] 1-motor;2-mounting frame;3-screw rod;6-screw rod nut one;8-spring;9-connecting rod;10-pin shaft;11-O-ring;13-rotary frame;15-convex rod, 16-guide rod, 17-guide rod seat, 18-screw rod nut two, 19-bearing. DETAILED DESCRIPTION

[0018] ​​Embodiment: As shown in the figure, a rotary lifting device for eliminating transmission gap, comprising: a mounting frame 2, a lead screw 3, a guide rod 16, a guide rod seat 17, a lead screw nut one 6, a lead screw nut two 18, a spring 8, a motor 1, a connecting rod 9 and a rotary frame 13; the mounting frame 2 is composed of a bottom plate, two front and rear supports and two left and right side supports, the bottom plate of the mounting frame 2 is provided with a mounting hole, the guide rod seat 17, the lead screw nut one 6 and the lead screw nut two 18 are fixed in sequence on the bottom plate of the mounting frame 2 by screws, the upper parts of the lead screw nut one 6 and the lead screw nut two 18 are respectively provided with threaded holes, the lower parts are respectively provided with n-shaped grooves, the guide rod seat 17 is provided with a cylindrical hole, the guide rod 16 is horizontally installed in the n-shaped groove at the lower part of the lead screw nut one 6 and the lead screw nut two 18, one end of the guide rod 16 is inserted into the cylindrical hole and fixed with the guide rod seat 17, one side support of the mounting frame 2 is provided with a cylindrical hole, the other end of the guide rod 16 is provided with a threaded hole, the other end of the guide rod 16 is fixed with the side support of the mounting frame 2 by a screw, the lead screw 3 is inserted into the threaded hole at the upper part of the lead screw nut one 6 and the lead screw nut two 18, one end of the lead screw 3 is provided with a cylindrical hole, the lead screw 3 is fixed with the shaft of the motor 1, the two side supports of the mounting frame 2 are respectively provided with cylindrical holes, a bearing 19 is installed in the cylindrical hole of one side support, the other end of the lead screw 3 is inserted into the bearing hole of the bearing 19, the side support of the other side of the mounting frame 2 is matched with the mouth of the motor 1, connected with the mounting hole on the side support of the mounting frame 2 by a screw, so that the side support of the mounting frame 2 is fixed with the motor 1, the motor 1 is away from the bearing platform of the rotary frame 13, so as to reduce noise and save space; the spring 8 is sleeved on the lead screw 3 and located between the lead screw nut one 6 and the lead screw nut two 18, used for eliminating the transmission gap between the lead screw 3 and the lead screw nut one 6 and the lead screw nut two 18; the top of the lead screw nut one 6 is provided with a cylindrical hole, the two ends of the cylindrical hole are provided with inner grooves, an O-ring 11 is placed in the inner grooves, used for eliminating the gap between the pin shaft 10 and the lead screw nut one 6, the two ends of the connecting rod 9 are respectively provided with cylindrical holes, the cylindrical hole at one end is connected with the cylindrical hole at the top of the lead screw nut one 6 through the pin shaft 10, so that the connecting rod 9 is fixed with the lead screw nut one 6 and can rotate around the pin shaft 10; the front and rear supports of the mounting frame 2 are respectively provided with cylindrical holes, the top of the rotary frame 13 is provided with cylindrical holes corresponding to the cylindrical holes on the front and rear supports, the rotary frame 13 is connected with the mounting frame 2 by inserting a rotating shaft into the cylindrical holes, the rotary frame 13 can rotate around the rotating shaft, a convex rod 15 is extended from the bottom of the rotary frame 13, a cylindrical hole is provided at the rod end of the convex rod 15, inner grooves are provided at the two sides of the cylindrical hole, an O-ring is placed in the inner grooves, used for eliminating the fitting gap between the convex rod 15 and the pin shaft 10, the rotary frame 13 is connected and fixed with the connecting rod 9 through the rotating shaft inserted into the cylindrical hole at the rod end of the convex rod 15 and the cylindrical hole at the other side of the connecting rod 9, the rotary frame 13 can relatively rotate around the rotating shaft, one end of the connecting rod 9 is connected with the lead screw nut one 6 through the pin shaft 10, the other end is hinged with the convex rod 15 at the bottom of the rotary frame 13, so as to convert linear motion into rotary motion.

[0019] Working principle:

[0020] The motor rotates and transmits torque to the lead screw, the lead screw rotates to push the lead screw nut one and the lead screw nut two to move synchronously in a straight line, and drive the spring between the lead screw nut one and the lead screw nut two to move synchronously, the lead screw nut one drives the connecting rod to move through the pin shaft, and the connecting rod drives the convex rod at the lower end of the rotating frame through the pin shaft to make the rotating frame rotate around the rotating shaft.

[0021] The above is an exemplary description of the present application, it should be noted that without departing from the core of the present application, any simple modification, modification or other equivalent replacement which can not cost the creative labor of the person skilled in the art falls within the protection scope of the patent.

Claims

1. A rotary lift device that eliminates drive lash, characterized by: Include: Lead screw, guide rod, mounting bracket, guide rod seat, lead screw nut one, lead screw nut two, motor, connecting rod and rotating frame; The upper part of the lead screw nut one and the lead screw nut two is respectively provided with a threaded hole, the lower part is respectively provided with an n type slot, one end of the guide rod passes through the n type slot and the guide rod seat in turn and is fixed, the guide rod seat is fixed on the mounting bracket, the other end of the guide rod is fixed with the mounting bracket;The lead screw passes through the threaded hole of the lead screw nut one and the lead screw nut two in turn, one end of which is fixed with the shaft of the motor, the other end of which is connected with the mounting bracket through the bearing, the motor is connected and fixed with the mounting bracket, the top end of the lead screw nut one is provided with a connecting hole, one end of the connecting rod is connected with the lead screw nut one through the pin shaft, the front and rear supports of the mounting bracket and the top of the rotating frame are respectively connected through the rotating shaft, the bottom of the rotating frame is provided with a convex rod, the end of the convex rod is provided with a connecting hole, the other end of the connecting rod is hinged with the convex rod through the connecting hole.

2. A rotary lift assembly according to claim 1, wherein: The spring is sleeved on the lead screw, and the spring is installed between the lead screw nut one and the lead screw nut two.

3. The rotary lift of claim 1 wherein: The top end connecting hole of the lead screw nut one is provided with an inner groove on both sides, and an O ring is placed in the inner groove.

4. The rotary lift of claim 1 wherein: The connecting hole of the convex rod end is provided with an inner groove on both sides, and an O ring is placed in the inner groove.

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