Backlash-eliminating rotary lifting device without solid rotating shaft
By using a design without a solid rotating shaft and a torsion spring pressure mechanism, the problems of space occupation and backlash vibration of solid rotating shafts in rotary lifting devices are solved, achieving a smooth rotary lifting effect.
Patent Information
- Application Number
- CN202520062036.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-11
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2035-01-11
AI Technical Summary
The existing rotary lifting device has problems such as the physical shaft taking up space and tooth gap jitter, which affects the appearance and user experience.
It adopts a solid shaftless design, using a combination of motor gearbox, internal gear, rocker arm and torsion spring. The rotation without a solid shaft is achieved by the V-groove bearing on the rocker arm cooperating with the V-shaped protrusion on the base. The pressure of the torsion spring eliminates backlash and improves the smoothness of operation.
It achieves rotational lifting without a physical shaft, eliminating load vibration and improving the stability of the device's operation and the user experience in complex environments.
Smart Images
Figure CN223469703U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to mechanical drive field, and particularly relates to a kind of no entity rotating shaft gear loss rotary lifting device. BACKGROUND
[0002] In recent years, with the improvement of living standards, people have higher requirements on appearance effect while meeting the product and use. Many products are designed to realize function component lifting height adjustment by controlling transmission mechanism, or hidden to platform when not used. For this, the rotary lifting device provided by various manufacturers to realize the above function is in the form of rotating member rotating around entity shaft, and rotary transmission mechanism is realized by motor or gear box plus motor. This rotary lifting device has the following defects: 1, rotating member rotates around entity shaft, and entity shaft occupies a part of space, which limits the appearance design. 2, when using reduction box, the backlash of reduction box will cause the function component of rotary lifting to shake itself when external environment shakes, which affects the use experience. SUMMARY
[0003] The utility model aims at overcoming the above-mentioned defects, and provides a kind of no entity rotating shaft gear loss rotary lifting device, which realizes no entity shaft rotation, and avoids load from external vibration and transmission gap shaking.
[0004] The utility model discloses a kind of no entity rotating shaft gear loss rotary lifting device, it is characterized by: including base, internal gear, motor gear box, swing bar and torsion spring, the front side of the base is equipped with arc slope face, the arc slope face is equipped with installation groove, the two sides of the installation groove are installed with the internal gear that is consistent with arc slope face, the rear of the motor gear box is symmetrically equipped with two lug, two lug are respectively equipped with lug shaft hole and lug insertion hole, swing bar is respectively equipped with swing bar shaft hole and swing bar insertion hole, the two ends of swing bar pivot are respectively inserted in lug shaft hole and swing bar shaft hole, torsion spring is sleeved on swing bar pivot, the inner branch of torsion spring is inserted in lug insertion hole, the outer branch of torsion spring is inserted in swing bar insertion hole, the motor gear box is installed in base, the arc face of the rear of the motor gear box two sides is installed in installation groove, the output shaft of the two sides of the motor gear box is connected gear box output gear, the gear box output gear is engaged with internal gear, the rear of the motor gear box is installed rotary lifting load.
[0005] The rear of the base arc slope face is equipped with V-shaped protrusion along arc slope face, swing bar is equipped with screw hole, stepped shaft screw is inserted in screw hole, V-shaped groove bearing is sleeved on stepped shaft screw, the V-shaped groove of V-shaped groove bearing is attached to the V-shaped protrusion of the two sides of base.
[0006] The rear part of the motor gear box is provided with a threaded hole for mounting a rotating lifting load positioning pin.
[0007] The utility model discloses beneficial effect is:
[0008] 1, motor gear box output shaft rotation, transmission torque is given to gear box output gear, gear box output gear is engaged with the internal gear, and the gear box output gear is closely engaged with the internal gear under the influence of torsional spring pressure and moves up and down along the arc slope of the base, and the gear box output gear is closely engaged with the internal gear under the influence of torsional spring pressure, plays the role of tooth gap, improves the stability of the whole entity rotation lifting device operation, also makes the load that needs to rotate and lift not easy to shake under the complex environment of external vibration.
[0009] 2, the V-shaped groove bearing on the swing bar is matched with the V-shaped convex on the base through the pressure of torsional spring, and the motor gear box is fixed to the arc slope of the base, so that the motor gear box can only move along the arc slope of the base, so as to realize the rotation of the entity rotation lifting device, and the motor gear box is pressed to the arc slope of the base, so that the load that needs to rotate and lift is not easy to shake under the complex environment of external vibration. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is the structure schematic diagram of the utility model.
[0011] Figure 2 It is the rear part structure schematic diagram of the utility model motor gear box.
[0012] Figure 3 It is the side view structure schematic diagram of the utility model.
[0013] Figure 4 It is the overhead structure schematic diagram of the utility model.
[0014] Among them:
[0015] 1-base, 2-swing bar shaft, 3-mounting groove, 4-motor gear box, 5-internal gear, 6-gear box output gear, 7-swing bar, 8-hanging ear, 9-hanging ear shaft hole, 10-hanging ear insertion hole, 11-V-shaped convex, 12-swing bar insertion hole, 13-torsional spring, 14-V-shaped groove bearing, 15-step shaft screw, 16-swing bar shaft hole, 17-positioning pin, 18-threaded hole. DETAILED DESCRIPTION
[0016] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0017] In order to make the above-mentioned purpose, features and advantages of the present application more apparent, understandable and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.
[0018] As shown in the figure, a kind of solid rotating shaft tooth clearance rotary lifting device, including base 1, internal gear 5, motor gear box 4, gear box output gear 6, V-shaped groove bearing 14, torsion spring 13, swing bar 7 and swing bar shaft 2, the front of the base 1 two sides are equipped with arc slope, the arc slope is equipped with installation groove 3, the two sides of the installation groove 3 are equipped with the internal gear 5 consistent with arc slope, the rear of the motor gear box 4 is symmetrically equipped with two lug 8, each lug 8 is respectively equipped with upper and lower two lug shaft hole 9 and upper and lower two lug insertion hole 10, the swing bar 7 is respectively equipped with swing bar shaft hole 16 and swing bar insertion hole 12, one end of the swing bar shaft 2 is inserted into lug shaft hole 9 and is fixed with motor gear box 4, the other end of swing bar shaft 2 is inserted into swing bar shaft hole 16, the swing bar shaft 2 is equipped with torsion spring 13, the inner arm of the torsion spring 13 is inserted into lug insertion hole 10, the outer arm of the torsion spring 13 is inserted into swing bar insertion hole 12, the V-shaped groove bearing 14 is sleeved on step shaft screw 15, the end thread of the step shaft screw 15 is connected with the thread hole on the swing bar 7, the V-shaped groove bearing 14 is fixed to the swing bar 7, the lug 8 of the motor gear box 4 is equipped with 4 sets of swing bar shaft 2, swing bar 7, torsion spring 13 and V-shaped groove bearing 14 symmetrically on the upper, lower, left and right, the rear of the arc slope of the base 1 is equipped with V-shaped convex 11 along the arc slope, the motor gear box 4 is installed in the base 1, the arc surface on the rear of the motor gear box 4 is installed in the installation groove 3 consistent with the arc surface, the two sides of the motor gear box 4 are equipped with output shafts extending from the gear box, two gear box output gears 6 are respectively fixed to the output shafts on the two sides of the motor gear box 4, the gear box output gear 6 is engaged with the internal gear 5, the motor gear box 4 moves up and down along the arc slope of the base 1, the V-shaped groove of the V-shaped groove bearing 14 is installed in the V-shaped convex 11 on the two sides of the gear box 4, the rear of the motor gear box 4 is equipped with positioning pin 17 and thread hole 18, for installing rotary lifting load.
[0019] Working principle:
[0020] The motor gear box output shaft rotates, and transmits torque to the gear box output gear 6, the gear box output gear 6 is engaged with the inner gear 5, and the motor gear box moves up and down along the arc slope surface of the base 1.
[0021] The V-shaped groove bearing 14 on the swing rod 7 is matched with the V-shaped convex 11 on the base 1 through the pressure of the torsion spring 13, the motor gear box 4 is fixed to the arc slope surface of the base 1, the motor gear box 4 can only move along the arc slope surface of the base 1, so as to realize the rotation movement without solid rotating shaft, and the motor gear box 4 is pressed to the arc slope surface of the base 1, so that the load which needs to be rotated and lifted is not easy to shake in the complex environment with external vibration.
[0022] The gear box output gear 6 is closely engaged with the inner gear 5 under the influence of the pressure of the torsion spring 13, plays a role of eliminating gear gap, improves the stability of the whole rotation lifting device without solid rotating shaft, and makes the load which needs to be rotated and lifted not easy to shake in the complex environment with external vibration.
[0023] The above has made the exemplary description of the utility model, it should be explained that, without departing from the core of the utility model, any simple deformation, modification or other equivalent replacement which can not spend the creative labor of the person skilled in the art falls into the protection scope of the patent.
Claims
1. A physical shaft-less tooth-eliminated rotary lift, characterized in that: It includes base, inner gear, motor gear box, swing rod and torsion spring, the front of base is provided with arc slope on both sides, the arc slope is provided with installation slot, the inner gear which is consistent with the arc slope is installed on both sides of the installation slot, the rear of motor gear box is provided with two hanging ears, the hanging ear shaft hole and the hanging ear insertion hole are respectively arranged on the two hanging ears, the swing rod shaft hole and the swing rod insertion hole are respectively arranged on the swing rod, the two ends of swing rod shaft are respectively inserted into the swing rod shaft hole and the swing rod insertion hole, the torsion spring is sleeved on the swing rod shaft, the inner branch of torsion spring is inserted into the hanging ear insertion hole, the outer branch of torsion spring is inserted into the swing rod insertion hole, the motor gear box is installed in the base, the arc surface on both sides of the rear of motor gear box is installed in the installation slot, the output shaft on both sides of the motor gear box is connected with gear box output gear, the gear box output gear is engaged with the inner gear, the rear of motor gear box is installed with rotary lifting load.
2. The solid shaft-less tooth-eliminated rotary lift device according to claim 1, wherein: The rear of base arc slope is provided with V-shaped convex along the arc slope, the swing rod is provided with threaded hole, the stepped shaft screw is inserted into the threaded hole, the V-shaped groove bearing is sleeved on the stepped shaft screw, the V-shaped groove of V-shaped groove bearing is consistent with the V-shaped convex on both sides of base.
3. The solid shaft-less tooth-eliminated rotary lift device according to claim 1, wherein: The rear of motor gear box is provided with positioning pin and threaded hole for installing rotary lifting load.