Silent reduction gearbox of intelligent driving element

Abstract

The utility model relates to a mute reduction gearbox of intelligent drive part, including motor, motor output shaft, reduction gearbox casing, the motor output shaft of installation has the worm reaches into in reduction gearbox casing, and the motor axle shell of covering motor output shaft and worm is arranged in the inside of reduction gearbox casing, and the motor axle shell one side sets up the opening, and the worm is engaged transmission with the worm wheel in reduction gearbox casing through the opening, the motor axle shell has the motor axle locating sleeve inside, and the end of motor output shaft is supported on the motor axle locating sleeve, the utility model overcomes the axial vibration and radial swing on the motor output shaft in traditional reduction gearbox, makes the worm on the motor output shaft and the worm wheel cooperation stability, and the noise production is reduced greatly.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, and in particular to a silent gearbox with an intelligent drive component. Background Technology

[0002] Based on the noise sources of the gearboxes in the drive units of existing smart furniture and kitchen appliances, the main sources of noise are as follows:

[0003] Noise source 1: Motor noise, which is the main source of gearbox noise. The shaft vibration generated by the motor itself when running at high speed is mainly divided into noise generated by axial movement of the motor shaft and noise generated by radial oscillation.

[0004] Noise source 2: Structural resonance, the natural frequency of the gearbox housing coincides with the gear meshing frequency, amplifying the noise.

[0005] Other sources include: gear burrs, poor lubrication, oil film failure, load fluctuations, temperature effects, assembly problems, etc.

[0006] like Figure 1 As shown, in a traditional intelligent drive gearbox, the motor 10 is mounted in a motor housing, and a worm 20 is mounted on the motor output shaft 50. The worm 20 engages with the helical gear of the worm wheel 30, and the power is transmitted to the output shaft 40 through various gear sets. The worm, worm wheel, and various gear sets are all housed within the gearbox housing, with each gear and gear set having its own mounting shaft. The worm transmits the output power from the motor output shaft 50. When the worm engages with the worm wheel, the axial vibration and radial oscillation of the motor output shaft 50 directly affect the meshing accuracy with the worm wheel. Simultaneously, the natural frequency of the gearbox housing resonates with the gear meshing frequency.

[0007] In response to the existing structure of the gearbox, the applicant has made some innovative designs, achieving a noise reduction and ultra-quiet design based on the traditional gearbox, overcoming the structural defects that cause noise in the traditional gearbox, and thus this case arose. Utility Model Content

[0008] The main purpose of this utility model is to provide a silent gearbox with intelligent drive components, which overcomes the axial vibration and radial sway on the motor output shaft in the traditional method, so that the worm and worm wheel on the motor output shaft are stably matched, and the noise generation is greatly reduced.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A silent gearbox for intelligent drive components includes a motor, a motor output shaft, and a gearbox housing;

[0011] The motor output shaft equipped with a worm gear extends into the gearbox housing. Inside the gearbox housing is a motor shaft housing that covers the motor output shaft and the worm gear. An opening is provided on one side of the motor shaft housing, and the worm gear meshes with the worm wheel in the gearbox housing through the opening for transmission.

[0012] The motor shaft housing contains a motor shaft positioning sleeve, and the end of the motor output shaft is supported on the motor shaft positioning sleeve.

[0013] The above plan can be further improved:

[0014] The internal cavity of the motor shaft housing is filled with lubricating grease.

[0015] The inner wall of the motor shaft housing has a serrated structure that matches the tooth profile of the worm gear.

[0016] The motor shaft positioning sleeve has a concave side and a convex side, with the edge of the concave side forming a rim.

[0017] The motor shaft housing is provided with a groove corresponding to the shape of the motor shaft positioning sleeve at the assembly point of the motor shaft housing. The protrusion of the motor shaft positioning sleeve is fitted into the groove, and the edge of the motor shaft positioning sleeve abuts against the outside of the groove.

[0018] The gearbox housing has a multi-stage gear transmission.

[0019] The gearbox housing includes a five-stage transmission. The first stage transmission includes a worm gear and a single-stage gear mounted on the first shaft. The second stage transmission includes a double gear I mounted on the second shaft. The third stage transmission includes a double gear II mounted on the third shaft. The fourth stage transmission includes a double gear III mounted on the second shaft. The fifth stage transmission includes a five-stage gear mounted on the power output shaft.

[0020] The gearbox housing is provided with an oil reservoir corresponding to the position of each gear set.

[0021] The oil storage chamber is a semi-enclosed structure, and its interior is filled with lubricating grease.

[0022] The motor is mounted on a motor mount, which is connected to the gearbox housing.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] In this invention, a motor shaft housing and a motor shaft positioning sleeve are installed inside the gearbox housing. The motor output shaft and worm gear are entirely enclosed within the motor shaft housing, preventing axial vibration and radial sway of the motor shaft. Structurally, this effectively restricts and fixes the working position and state of the motor shaft, eliminating the cause of noise generation, significantly reducing noise, and achieving an ultra-quiet transmission effect. Lubricating grease is stored at the gear meshing points for further lubrication and noise reduction. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of the existing technology. Figure 1 ;

[0026] Figure 2 This is a cross-sectional view of the existing technology. Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the overall embodiment of the present utility model;

[0028] Figure 4 This is a vertical cross-sectional view of a preferred embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the interior of a preferred embodiment of the present invention. Figure 1 ;

[0030] Figure 6 This is a schematic diagram of the interior of a preferred embodiment of the present invention. Figure 2 ;

[0031] Figure 7 This is a schematic diagram of a multi-stage transmission gear set, a preferred embodiment of this utility model. Figure 1 ;

[0032] Figure 8 This is a schematic diagram of a multi-stage transmission gear set, a preferred embodiment of this utility model. Figure 2 ;

[0033] Figure 9 This is a schematic diagram of the motor shaft positioning sleeve of a preferred embodiment of the present invention. Detailed Implementation

[0034] Please refer to the instruction manual appendix. Figures 3-9 As shown, the present invention will be further described in detail below.

[0035] The main components involved in this embodiment include a motor 1, a motor mount 11, a gearbox housing 2, a worm gear 3, a worm 4, and a multi-stage gear set. The motor 1, mounted on the motor mount 11, has its output shaft 12 extending into the gearbox housing 2. Power is transmitted through the worm gear 3 and worm 4, and then undergoes multi-stage reduction processing through the multi-stage gear set inside the gearbox housing 2 before finally being output as the power source for the intelligent drive component.

[0036] The motor mount 11 is a base for mounting and fixing the motor 1. It has an internal cavity suitable for fixing the motor and is connected to the gearbox housing 2. The motor output shaft 11 of the motor inside the motor mount 11 extends from the front end into the gearbox housing 2, and the connecting wire of the motor 1 extends from the rear end to connect to the external power supply.

[0037] One of the most significant technical improvements of this invention lies in the modification of the motor output shaft 12. The worm gear 4 is mounted on the motor output shaft 12 and extends into the gearbox housing 2 together with it. The gearbox housing 2 itself is a component that encloses the worm wheel 3, worm 4, and various gear sets. Inside the gearbox housing 2, a motor shaft housing 21 is formed. The motor output shaft 12, along with the worm gear 4, extends into the motor shaft housing 21. The interior of the motor shaft housing 21 is a cavity whose shape matches that of the motor output shaft 12 and worm gear 4. This cavity can be filled with solid lubricating grease. The motor output shaft 12 and worm gear 4 are encased within the motor shaft housing 21, allowing for smooth, stable, and efficient operation with the lubricating grease. Simultaneously, an opening 22 is provided on the side near the worm wheel 4, allowing the worm gear 4 to be exposed and mesh with the worm wheel 3.

[0038] At the end of the motor output shaft 12, a motor shaft positioning sleeve 13 is provided. The end of the motor output shaft 12 is supported on the motor shaft positioning sleeve 13, and the motor shaft positioning sleeve 13 is embedded in the end of the inner wall of the motor shaft housing 21.

[0039] The above structure ensures that the entire motor output shaft 12 is limited in both the axial and radial directions by the motor shaft positioning sleeve 13, preventing it from vibrating back and forth axially or deviating radially. This avoids the main noise caused by the vibration of the motor output shaft 12. At the same time, the motor output shaft 12, together with the worm gear 4, is enclosed in a semi-enclosed environment with lubricating grease inside, which further reduces the transmission of noise.

[0040] Furthermore, to better match the shape of the worm gear 4, the interior of the motor shaft housing 21 can be made with a serrated structure. In this embodiment, the motor shaft positioning sleeve 13 has a concave portion 131 on one side facing the motor output shaft 12 and a convex portion 132 on the other side. The edge of the concave portion forms a ring edge 133. (See [reference needed]). Figure 9 A groove 23 is formed inside the motor shaft housing 21 where the motor shaft positioning sleeve 13 is placed. During assembly, the protrusion 132 of the motor shaft positioning sleeve 13 is inserted into the groove 23, and the edge 133 abuts against the outside of the groove 23. The motor output shaft 12 rests against the recess 131 of the motor shaft positioning sleeve 13, forming a stable support structure.

[0041] like Figure 7 , Figure 8As shown, in this embodiment, the reduction transmission is achieved through a five-stage gear set. Of course, this invention is also applicable to other numbers of multi-stage transmissions; however, a five-stage example is used here for detailed explanation. This embodiment includes a first-stage transmission comprising a worm gear 3 and a single-stage gear 52 mounted on a first shaft 51; a second-stage transmission comprising a double-gear 54 mounted on a second shaft 53; a third-stage transmission comprising a double-gear 56 mounted on a third shaft 55; a fourth-stage transmission comprising a double-gear 57 mounted on a second shaft 53; and a fifth-stage transmission comprising a five-stage gear 59 mounted on a power output shaft 58. The double-gear 54, double-gear 56, and double-gear 57 are all integral structures formed by combining two gears of different sizes. The first shaft 51, second shaft 53, and third shaft 55 are fixedly mounted.

[0042] The power transmission process is as follows: the motor output shaft 12 meshes with the worm wheel 3 via the worm 4. The worm wheel 3 is connected to the first-stage gear 52 and rotates coaxially, driving the first-stage gear 52 to rotate. The first-stage gear 52 meshes with the large gear of the double gear 1 54; the small gear of the double gear 1 54 meshes with the large gear of the double gear 2 56; the small gear of the double gear 2 56 meshes with the large gear of the double gear 3 57; the small gear of the double gear 3 57 meshes with the fifth-stage gear 59; and the fifth-stage gear 59 is connected to the power output shaft 58 to form a single unit, ultimately outputting the power after five stages of transmission. In this embodiment, the second-stage transmission double gear 1 54 and the fourth-stage transmission double gear 3 57 are coaxially mounted on the second shaft 53, separated by a shim. This significantly reduces the size of the gearbox while ensuring multi-stage transmission and a large transmission ratio.

[0043] To ensure transmission at each stage, a semi-enclosed oil reservoir 6 is formed by a surrounding barrier on the inner wall of the gearbox housing, corresponding to the gear positions. This reservoir is filled with lubricating grease, ensuring adequate lubrication of the gears and reducing the resonance problem between the overall structure's natural frequency and the gear meshing frequency.

[0044] The above-described specific embodiments are merely preferred embodiments of this invention and are not intended to limit this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A silent gearbox with an intelligent drive component, characterized in that: Includes the motor, motor output shaft, and gearbox housing; The motor output shaft equipped with a worm gear extends into the gearbox housing. Inside the gearbox housing is a motor shaft housing that covers the motor output shaft and the worm gear. An opening is provided on one side of the motor shaft housing, and the worm gear meshes with the worm wheel in the gearbox housing through the opening for transmission. The motor shaft housing contains a motor shaft positioning sleeve, and the end of the motor output shaft is supported on the motor shaft positioning sleeve.

2. The silent gearbox of the intelligent drive component as described in claim 1, characterized in that: The internal cavity of the motor shaft housing is filled with lubricating grease.

3. The silent gearbox of the intelligent drive component as described in claim 1, characterized in that: The inner wall of the motor shaft housing has a serrated structure that matches the tooth profile of the worm gear.

4. The silent gearbox of the intelligent drive component as described in claim 1, characterized in that: The motor shaft positioning sleeve has a concave side and a convex side, with the edge of the concave side forming a rim.

5. The silent gearbox of the intelligent drive component as described in claim 1, characterized in that: The motor shaft housing is provided with a groove corresponding to the shape of the motor shaft positioning sleeve at the assembly point of the motor shaft housing. The protrusion of the motor shaft positioning sleeve is fitted into the groove, and the edge of the motor shaft positioning sleeve abuts against the outside of the groove.

6. The silent gearbox of the intelligent drive component as described in claim 1, characterized in that: The gearbox housing has a multi-stage gear transmission.

7. The silent gearbox of the intelligent drive component as described in claim 1, characterized in that: The gearbox housing includes a five-stage transmission. The first stage transmission includes a worm gear and a single-stage gear mounted on the first shaft. The second stage transmission includes a double gear I mounted on the second shaft. The third stage transmission includes a double gear II mounted on the third shaft. The fourth stage transmission includes a double gear III mounted on the second shaft. The fifth stage transmission includes a five-stage gear mounted on the power output shaft.

8. The silent gearbox of the intelligent drive component as described in claim 7, characterized in that: The gearbox housing is provided with an oil reservoir corresponding to the position of each gear set.

9. The silent gearbox of an intelligent drive component as described in claim 8, characterized in that: The oil storage chamber is a semi-enclosed structure, and its interior is filled with lubricating grease.

10. The silent gearbox of the intelligent drive component as described in claim 1, characterized in that: The motor is mounted on a motor mount, which is connected to the gearbox housing.

Images