Motor reduction gearbox structure with non-return function and flat motor
By designing a motor gearbox structure with a backstop function and utilizing a worm gear self-locking mechanism, the problems of low torque and poor backstop performance of the vehicle-mounted tilting motor were solved, achieving the effects of increased torque and rapid response.
Patent Information
- Application Number
- CN202423200554.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing vehicle-mounted tilting motors have low torque and poor backstop performance of planetary gear reducers, which cannot meet the requirements for rapid response of vehicle-mounted tilting and avoid accidental rotation of the tilting screen caused by external forces.
Design a motor gearbox structure with a backstop function, including a reduction gear assembly and a gear worm assembly. The worm gear's self-locking mechanism prevents incorrect rotation. Combined with the structure of a flat motor, it achieves torque increase and backstop functions.
A compact and high-torque motor gearbox has been developed, which can effectively prevent the vehicle-mounted tilting motor from rotating incorrectly during emergency braking and meet the requirements for rapid response of vehicle tilting.
Smart Images
Figure CN223625701U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor technology, and in particular to a motor gearbox structure with a backstop function and a flat motor. Background Technology
[0002] Currently, most vehicle-mounted tilting motors on the market use small-sized column motors and planetary gear reduction transmissions. These motors have low torque, which cannot meet the torque requirements of the tilting system. At the same time, the planetary gear reducers have poor backstop performance, which cannot meet the requirements for fast response of vehicle-mounted tilting, and cannot prevent the tilting screen from rotating unexpectedly due to speed changes or external forces on the tilting screen during vehicle operation.
[0003] Therefore, there is an urgent need to develop a gearbox with a compact structure, high torque, and backstop function. Utility Model Content
[0004] To address the shortcomings of the existing technology, this utility model provides a motor gearbox structure with a backstop function, comprising a first housing, a reduction gear assembly, a gear and worm assembly, and a worm wheel output shaft; the reduction gear assembly, gear and worm assembly, and worm wheel output shaft are installed inside the first housing; the reduction gear assembly is drive-connected to the gear and worm assembly, and the gear and worm assembly is drive-connected to the worm wheel output shaft; the worm wheel output shaft includes a worm wheel and an output shaft, the worm wheel is sleeved on the output shaft, and the worm wheel meshes with the worm gear and worm assembly; the first housing has an opening for the output shaft to pass through, and a bearing and a shaft retaining ring are installed in the opening.
[0005] In one embodiment, the reduction gear assembly includes a first gear and a second gear, which are sleeved on a first rotating shaft. The first gear drives the second gear to rotate, and the diameter of the second gear is smaller than that of the first gear.
[0006] In one embodiment, the first gear and the second gear are positioned by knurling the shaft.
[0007] In one embodiment, the gear and worm assembly includes a third gear and a worm. The third gear is sleeved on the worm and positioned by knurling on the shaft. The third gear meshes with the second gear, and the worm and the worm wheel output shaft mesh.
[0008] In one embodiment, the first housing has several bearing grooves inside, and the two ends of the first rotating shaft and the worm gear are installed in the bearing grooves.
[0009] In one embodiment, the first rotating shaft and the worm gear are fitted with bearings at both ends and installed in bearing grooves.
[0010] In one embodiment, the first housing is made of POM material.
[0011] This utility model also provides a flat motor with a backstop function, including a flat motor and the aforementioned motor gearbox structure with a backstop function; the flat motor includes a gear shaft, a rotor assembly, a stator assembly and a second housing; the gear shaft, rotor assembly and stator assembly are all mounted on the second housing, the gear shaft includes a second rotating shaft and a fourth gear fixed to the second rotating shaft, the second rotating shaft drives the fourth gear to rotate, the rotor assembly is sleeved on the second rotating shaft, and the fourth gear is connected to the first gear in a transmission connection; the first housing and the second housing are connected and locked by screws.
[0012] In one embodiment, the rotor assembly includes an armature plate, an insulating plate, and a turntable. The armature plate and the turntable are provided with shaft holes for a second shaft to pass through. The turntable is fixed to the second shaft. The insulating plate bonds the armature plate and the turntable together. The armature plate drives the turntable to rotate, thereby driving the second shaft to rotate.
[0013] In one embodiment, the stator assembly includes a magnet, a brush assembly, and output wires. The magnet is fixed inside the second housing. The brush assembly is fixed to the second housing, and the top of the brush of the brush assembly abuts against the armature plate.
[0014] Based on the above, compared with the prior art, the motor gearbox structure with backstop function provided by this utility model first reduces the high-speed power received through the reduction gear assembly, and then effectively prevents the motor from rotating incorrectly through the self-locking of the worm gear and worm wheel of the gear and worm assembly, thus having a good backstop function.
[0015] Other features and beneficial effects of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other beneficial effects of this invention can be realized and obtained through the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Unless otherwise specified, the positional relationships shown in the drawings in the following description are based on the direction in which the components are drawn in the figure.
[0017] Figure 1 A schematic diagram of a flat motor with a backstop function provided in an embodiment of the present invention, with the first housing removed;
[0018] Figure 2 for Figure 1A schematic diagram of direction AA;
[0019] Figure 3 A schematic diagram of a flat motor with a backstop function provided in an embodiment of the present invention, with the first and second housings removed;
[0020] Figure 4 A side view of a flat motor with a backstop function provided in an embodiment of the present invention, with the first housing removed;
[0021] Figure 5 The first housing is removed from the top view of a flat motor with a backstop function provided in an embodiment of this utility model.
[0022] Figure label:
[0023] The gearbox structure includes: 100, first housing 110, reduction gear assembly 120, first gear 121, second gear 122, first rotating shaft 123, gear and worm assembly 130, third gear 131, worm 132, worm wheel output shaft 140, worm wheel 141, output shaft 142, opening 150, bearing 151, shaft elastic retaining ring 152, and bearing groove 160.
[0024] Flat motor 200, gear shaft 210, second rotating shaft 211, fourth gear 212, rotor assembly 220, armature plate 221, insulating plate 222, turntable 223, stator assembly 230, magnet 231, brush assembly 232, output wire 233, second housing 240. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The technical features designed in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.
[0026] In the description of this utility model, it should be noted that all terms used in this utility model (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains, and should not be construed as limiting this utility model; it should be further understood that the terms used in this utility model should be understood to have the same meaning as those in the context of this specification and in the relevant field, and should not be understood in an idealized or overly formal sense, except as expressly defined in this utility model.
[0027] Example 1
[0028] This utility model provides a motor gearbox structure 100 with a backstop function, such as... Figure 1 and Figure 2 As shown, it includes a first housing 110, a reduction gear assembly 120, a gear and worm assembly 130, and a worm gear output shaft 140; the reduction gear assembly 120, the gear and worm assembly 130, and the worm gear output shaft 140 are installed inside the first housing 110; the reduction gear assembly 120 is connected to the gear and worm assembly 130, and the gear and worm assembly 130 is connected to the worm gear output shaft 140.
[0029] In practice, the gearbox structure 100 is directly fixed to the flat motor 200, and the first housing 110 is directly fixed to the motor to be reversed. The two can be connected by screws 250. The reduction gear assembly 120 is used to reduce the power output by the flat motor 200 and transmit it to the gear and worm assembly 130. The gear and worm assembly 130 drives the worm wheel output shaft 140 to rotate.
[0030] In one embodiment, such as Figure 3 As shown, the worm gear output shaft 140 includes a worm gear 141 and an output shaft 142. The worm gear 141 is sleeved on the output shaft 142. The worm gear 141 meshes with the worm gear 132 gear worm assembly 130. The first housing is provided with an opening 150 for the output shaft 142 to pass through. The opening 150 is fitted with a bearing 151 and a shaft elastic retaining ring 152.
[0031] Specifically, the worm gear 141 and worm 132 have a self-locking function, allowing rotation only in one direction. When the flat motor 200 rotates incorrectly, the worm gear 141 of the worm gear output shaft 140 and the worm 132 of the gear and worm assembly 130 engage in self-locking to prevent incorrect motor rotation. For example, in the case of a flip motor used in a vehicle screen, sudden braking during actual use may cause the motor to rotate, thus causing the screen to rotate. Using the reduction gearbox structure 100 of this invention in a vehicle flip motor, with the reduction gear assembly 120 retrieving and transmitting the reduced power to the worm gear 141 and worm 132 combination, can effectively prevent incorrect rotation of the vehicle screen flip motor during braking.
[0032] Better, such as Figure 4 As shown, elastic retaining rings 152 are provided on both sides of the bearing 151, which position the output shaft 142 and the bearing 151 to prevent relative movement and also seal the motor to a certain extent.
[0033] In one embodiment, such as Figure 2 and Figure 3 As shown, the reduction gear assembly 120 includes a first gear 121 and a second gear 122, which are sleeved on a first rotating shaft 123. The first gear 121 drives the second gear 122 to rotate, and the diameter of the second gear 122 is smaller than that of the first gear 121. The first gear 121 and the second gear 122 are positioned by knurling on the shaft. Specifically, the first gear 121 is connected to the power output of the motor, and the second motor is connected to the gears of the gear and worm gear assembly 130, transmitting the reduced power to the gear and worm gear assembly 130.
[0034] In one embodiment, such as Figure 2 As shown, the gear and worm assembly 130 includes a third gear 131 and a worm 132. The third gear 131 is sleeved on the worm 132 and positioned by knurling on the shaft. The third gear 131 meshes with the second gear 122, and the worm 132 meshes with the worm wheel output shaft 140. Specifically, the worm wheel 141-worm gear 132 assembly formed by the combination of the worm 132 of the gear and worm gear assembly 130 and the worm wheel 141 of the worm wheel output shaft 140 can effectively prevent the motor from reversing.
[0035] In one embodiment, such as Figure 3 As shown, the first housing has several bearing grooves 160 inside, and the two ends of the first rotating shaft 123 and the worm gear 132 are installed in the bearing grooves 160. Preferably, there are four bearing holes 151, and the two ends of the first rotating shaft 123 and the worm gear 132 can be installed in the bearing grooves 160 by fitting bearings 151. The bearings 151 are oil-impregnated bearings 151 to ensure the rotation of the first rotating shaft 123 and the worm gear 132. Preferably, the first housing is made of POM material, which has its own lubrication function, so the oil-impregnated bearings 151 can be omitted.
[0036] It should be noted that the gearbox structure 100 provided by this utility model is not limited to use in flat motors 200, but can also be used in other types of motors that require backstop and deceleration.
[0037] Example 2
[0038] This utility model also provides a flat motor 200 with a backstop function, such as Figure 4 and Figure 5As shown, the flat motor 200 and the motor gearbox structure 100 with backstop function in the above embodiment 1 are shown. The flat motor 200 includes a gear shaft 210, a rotor assembly 220, a stator assembly 230 and a second housing 240.
[0039] The gear shaft 210, rotor assembly 220, and stator assembly 230 are all mounted on the second housing 240. The gear shaft 210 includes a second rotating shaft 211 and a fourth gear 212 fixed to the second rotating shaft 211. The second rotating shaft 211 drives the fourth gear 212 to rotate. The rotor assembly 220 is sleeved on the second rotating shaft 211. The fourth gear 212 is connected to the first gear 121 for transmission. The first housing 110 and the second housing 240 are connected and locked by screws 250.
[0040] Specifically, the gearbox structure 100 is fixed to the flat motor 200 by screws 250. The first housing 110 and the second housing 240 have a number of screw holes for the screws 250 to pass through for fixing. Inside the first housing 110 and the second housing 240, the fourth gear 212 of the gear shaft 210 of the flat motor 200 is connected to the first gear 121 of the reduction gear assembly 120 through a drive connection, specifically by knurling the shaft.
[0041] In one embodiment, such as Figure 2 As shown, the rotor assembly 220 includes an armature plate 221, an insulating plate 222, and a turntable 223. The armature plate 221 and the turntable 223 are provided with shaft holes for the second shaft 211 to pass through. The turntable 223 is fixed to the second shaft 211. The insulating plate 222 bonds the armature plate 221 and the turntable 223 together. The armature plate 221 drives the turntable 223 to rotate, which in turn drives the second shaft 211 to rotate. Preferably, the turntable 223 is fixed to the second shaft 211 by fastening screws 250.
[0042] In one embodiment, such as Figure 2 As shown, the stator assembly 230 includes a magnet 231, a brush assembly 232, and an output wire 233. The magnet 231 is fixed to the inside of the second housing 240. The brush assembly 232 is fixed to the second housing 240, and the top of the brushes of the brush assembly 232 abuts against the armature plate 221. The brush assembly 232 includes a positive brush and a negative brush, and the wires are connected to the positive brush and the negative brush respectively. The wires output the wire 233 through the wire outlet hole provided in the motor mount. The magnet 231 is bonded to the inside of the second housing 240 with adhesive. A protective sleeve is provided on the outside of the wire.
[0043] Furthermore, those skilled in the art should understand that although many problems exist in the prior art, each embodiment or technical solution of this utility model can be improved in only one or a few aspects, without necessarily solving all the technical problems listed in the prior art or background art simultaneously. Those skilled in the art should understand that any content not mentioned in a claim should not be construed as a limitation on that claim.
[0044] Although this document frequently uses terms such as gearbox structure, first housing, reduction gear assembly, first gear, second gear, first shaft, gear and worm assembly, third gear, worm, worm gear output shaft, worm gear, output shaft, opening, bearing, shaft retaining ring, bearing groove, flat motor, gear shaft, second shaft, fourth gear, rotor assembly, armature plate, insulating plate, turntable, stator assembly, magnet, brush assembly, output wire, second housing, and screw, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model. The terms "first," "second," etc. (if present) in the description, claims, and accompanying drawings of the embodiments of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A motor gearbox structure with a backstop function, characterized in that: It includes a first housing, a reduction gear assembly, a gear and worm assembly, and a worm gear output shaft; the reduction gear assembly, the gear and worm assembly, and the worm gear output shaft are installed inside the first housing; the reduction gear assembly is drivingly connected to the gear and worm assembly, and the gear and worm assembly is drivingly connected to the worm gear output shaft; The worm gear output shaft includes a worm gear and an output shaft. The worm gear is sleeved on the output shaft and meshes with the worm gear assembly. The first housing is provided with an opening for the output shaft to pass through. A bearing and a shaft retaining ring are installed in the opening.
2. The motor gearbox structure with backstop function according to claim 1, characterized in that: The reduction gear assembly includes a first gear and a second gear, which are sleeved on a first rotating shaft. The first gear drives the second gear to rotate, and the diameter of the second gear is smaller than that of the first gear.
3. The motor gearbox structure with backstop function according to claim 2, characterized in that: The first gear and the second gear are positioned by knurling on the shaft.
4. The motor gearbox structure with backstop function according to claim 2, characterized in that: The gear and worm assembly includes a third gear and a worm. The third gear is sleeved on the worm and positioned by knurling. The third gear meshes with the second gear, and the worm meshes with the worm wheel output shaft.
5. The motor gearbox structure with backstop function according to claim 4, characterized in that: The first housing has several bearing grooves inside, and the first rotating shaft and the two ends of the worm gear are installed in the bearing grooves.
6. The motor gearbox structure with backstop function according to claim 5, characterized in that: The first rotating shaft and the two ends of the worm gear are fitted with bearings and installed in the bearing grooves.
7. The motor gearbox structure with backstop function according to claim 5, characterized in that: The first housing is made of POM material.
8. A flat motor with a backstop function, characterized in that: Includes a flat motor and a motor gearbox structure with a backstop function as described in any one of claims 1-7; The flat motor includes a gear shaft, a rotor assembly, a stator assembly, and a second housing; The gear shaft, the rotor assembly, and the stator assembly are all mounted on the second housing. The gear shaft includes a second rotating shaft and a fourth gear fixed to the second rotating shaft. The second rotating shaft drives the fourth gear to rotate. The rotor assembly is sleeved on the second rotating shaft. The fourth gear is connected to the first gear in a transmission manner. The first housing and the second housing are connected and locked by screws.
9. The flat motor with a backstop function according to claim 8, characterized in that: The rotor assembly includes an armature plate, an insulating plate, and a turntable. The armature plate and the turntable are provided with shaft holes for the second shaft to pass through. The turntable is fixed to the second shaft. The insulating plate bonds the armature plate and the turntable together. The armature plate drives the turntable to rotate, thereby driving the second shaft to rotate.
10. The flat motor with a backstop function according to claim 9, characterized in that: The stator assembly includes a magnet, a brush assembly, and output wires. The magnet is fixed inside the second housing. The brush assembly is fixed to the second housing, and the top of the brush of the brush assembly abuts against the armature plate.