CN216200179U

CN216200179U - Plastic bearing transmission device

Info

Publication number: CN216200179U
Application number: CN202122435786.8U
Authority: CN
Inventors: 王沛鑫
Original assignee: Tianjin Josen Technology Co ltd
Current assignee: Tianjin Josen Technology Co ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-04-05
Anticipated expiration: 2031-10-11

Abstract

The utility model relates to the technical field of bearings, in particular to a plastic bearing transmission device which comprises an upper cover, a lower shell and an inner ring, wherein the upper cover and the lower shell are made of plastics, the inner ring is nested between the upper cover and the lower shell, the plastic bearing transmission device also comprises a first steel ball group, a second steel ball group and a motor module, the first steel ball group is arranged between the lower shell and the inner ring so as to eliminate a gap between the lower shell and the inner ring, the second steel ball group is arranged between the upper cover and the inner ring so as to eliminate a gap between the upper cover and the inner ring, the top of the upper cover is provided with an assembly hole, the motor module comprises a motor, the output end of the motor is fixedly connected with a primary straight tooth, the upper surface of the inner ring is provided with a face tooth, and the primary straight tooth penetrates through the assembly hole to be meshed with the face tooth. The motor drives the inner ring to rotate through the transmission coordination of the primary straight teeth and the face teeth, so that a relatively large transmission ratio can be realized, and the problems that a small motor needs to be matched with a gear box or a multi-stage gear for transmission and a large motor needs to be matched with primary transmission or belt transmission in the conventional bearing transmission device are solved.

Description

Plastic bearing transmission device

Technical Field

The utility model relates to the technical field of bearings, in particular to a plastic bearing transmission device.

Background

In recent years, internet products and smart homes are developed towards intellectualization, the internal transmission demand is more and more increased, two relatively small metal bearings or one relatively large metal bearing are often used in products with larger rotating radius, and the metal bearings are high in cost and heavy and are not beneficial to the light weight demand of the products, and the two relatively small metal bearings occupy axial space and are not beneficial to the overall structural layout of the products; the existing transmission mode of the bearing comprises that a small motor is matched with a gear box or multi-stage gear transmission, and a large motor is matched with one-stage transmission or belt transmission, although the transmission cost of the small motor and the gear box or the multi-stage gear is low, the noise is difficult to control, and the large transmission ratio is difficult to realize by adding one-stage transmission to the small motor; while a large motor plus one stage of transmission is costly.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a plastic bearing transmission device, wherein a motor drives an inner ring to rotate through the transmission coordination of primary straight teeth and face teeth, so that a relatively large transmission ratio can be realized, and the problems that a small motor needs to be matched with a gear box or a multi-stage gear for transmission, and a large motor needs to be matched with primary transmission or belt for transmission in the conventional bearing transmission device are solved.

(II) technical scheme

In order to realize the purpose that the motor drives the inner ring to rotate through the transmission matching of the first-stage straight teeth and the face teeth, the utility model provides the following technical scheme: the utility model provides a plastic bearing transmission, include the upper cover that plastics were made, down the casing and nested in the upper cover with inner circle between the casing down, still include first steel ball group, second steel ball group and motor module, first steel ball group sets up down the casing with between the inner circle, in order to eliminate clearance between casing and inner circle down, second steel ball group sets up the upper cover with between the inner circle, in order to eliminate the upper cover with clearance between the inner circle, the upper cover top is provided with the pilot hole, motor module includes the motor, motor output fixedly connected with one-level straight-tooth, the inner circle upper surface is equipped with the face tooth, the one-level straight-tooth passes the pilot hole with the face tooth meshes.

Optionally, the motor module further includes a bracket, the motor is mounted in the bracket through a screw, and the bracket is elastically disposed in the assembling hole.

Optionally, one end of the bracket is hinged to the upper cover, and the other end of the bracket is fixedly connected with the upper cover through an extension spring.

Optionally, first steel ball group includes that first holder and equidistance set up a plurality of steel ball on first holder, the inner circle lateral wall is equipped with first inner circle slot, the internal lateral wall of inferior valve is equipped with the inferior valve slot, first steel ball group arranges in first inner circle slot with in the space that inferior valve slot formed.

Optionally, the second steel ball group includes that second holder and equidistance set up a plurality of steel ball on the second holder, the inner circle top is equipped with second inner circle slot, the upper cover bottom is equipped with the upper cover slot, the second steel ball group is arranged in the second inner circle slot with in the space that the upper cover slot formed.

(III) advantageous effects

Compared with the prior art, the utility model provides a plastic bearing transmission device, which has the following beneficial effects:

1. the bearing transmission device is provided with the motor, the primary straight teeth and the face teeth, the motor drives the inner ring to rotate through the transmission matching of the primary straight teeth and the face teeth, so that a relatively large transmission ratio can be realized, the problems that a small motor needs to be matched with a gear box or multi-stage gear transmission and a large motor needs to be matched with primary transmission or belt transmission in the conventional bearing transmission device are solved, and the upper cover, the lower shell and the inner ring are all plastic parts, so that the die opening production can be directly carried out, a machining process is not needed, and the processing cost is saved;

2. according to the utility model, the first steel ball group and the second steel ball group are arranged, and can be directly and respectively placed between the lower shell and the inner ring and between the upper cover and the inner ring, so that the assembly process is simplified, the assembly cost is saved, and the first steel ball group and the second steel ball group can respectively realize the functions of a rolling bearing and a thrust ball bearing and can bear relatively large axial force and radial force;

3. this practicality has eliminated the clearance between one-level straight-tooth and the face tooth through set up extension spring in support one side for can closely interlock between one-level straight-tooth and the face tooth, make whole transmission process more stable.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the upper cover of the present invention;

FIG. 3 is a schematic view of the inner ring structure of the present invention;

fig. 4 is a partial cross-sectional view of the utility model as a whole.

In the figure: 1. an upper cover; 2. a lower housing; 3. an inner ring; 4. a second holder; 5. a first holder; 6. A second inner race groove; 7. a first inner ring groove; 8. a support; 9. primary straight teeth; 10. an extension spring; 11. a screw; 12. a motor; 13. face teeth; 14. an assembly hole; 15. an upper cover groove; 16. a lower shell groove; 17. and (5) steel balls.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1 to 4, an embodiment of the present invention provides a technical solution: a plastic bearing transmission device comprises an upper cover 1 made of plastic, a lower shell 2 and an inner ring 3 nested between the upper cover 1 and the lower shell 2, and further comprises a first steel ball group, a second steel ball group and a motor module, wherein the first steel ball group is arranged between the lower shell 2 and the inner ring 3 to eliminate a gap between the lower shell 2 and the inner ring 3, the second steel ball group is arranged between the upper cover 1 and the inner ring 3 to eliminate the gap between the upper cover 1 and the inner ring 3, an assembly hole 14 is formed in the top of the upper cover 1, the motor module comprises a motor 12, the output end of the motor 12 is fixedly connected with a first-level straight tooth 9, the upper surface of the inner ring 3 is provided with a face tooth 13, the first-level straight tooth 9 penetrates through the assembly hole 14 to be meshed with the face tooth 13, the motor 12 drives the inner ring 3 to rotate through the transmission matching of the first-level straight tooth 9 and the face tooth 13, the bearing transmission device has the advantages that a relatively large transmission ratio can be realized, the problems that a small motor in the existing bearing transmission device needs to be matched with a gear box or multi-stage gear transmission, and a large motor needs to be matched with one-stage transmission or belt transmission are solved, the upper cover 1, the lower shell 2 and the inner ring 3 are plastic parts, the mold can be directly opened for production, the machining process is not needed, and the machining cost is saved.

On the basis of above-mentioned embodiment, this embodiment the motor module still includes support 8, motor 12 passes through screw 11 to be installed in support 8, support 8 elasticity set up in the pilot hole 14, support 8 one end with upper cover 1 is articulated, the other end pass through extension spring 10 with upper cover 1 is connected fixedly, and extension spring 10's setting has eliminated the clearance between one-level straight-tooth 9 and the face tooth 13 for can closely interlock between one-level straight-tooth 9 and the face tooth 13, make whole transmission process more stable.

On the basis of the above embodiment, the first steel ball group of this embodiment includes a first retainer 5 and a plurality of steel balls 17 equidistantly disposed on the first retainer 5, the outer side wall of the inner ring 3 is provided with a first inner ring groove 7, the inner side wall of the lower housing 2 is provided with a lower housing groove 16, the first steel ball group is disposed in a space formed by the first inner ring groove 7 and the lower housing groove 16, the second steel ball group includes a second retainer 4 and a plurality of steel balls 17 equidistantly disposed on the second retainer 4, the top of the inner ring 3 is provided with a second inner ring groove 6, the bottom of the upper cover 1 is provided with an upper cover groove 15, the second steel ball group is disposed in a space formed by the second inner ring groove 6 and the upper cover groove 15, when the bearing is assembled, the first steel ball group and the second steel ball group can be directly and respectively disposed between the lower housing 2 and the inner ring 3 and between the upper cover 1 and the inner ring 3, the assembling process is simplified, the assembling cost is saved, and the first steel ball group and the second steel ball group can respectively realize the functions of a rolling bearing and a thrust ball bearing and can bear relatively large axial force and radial force.

The working principle is as follows: firstly, when the bearing is assembled, partial steel balls 17 are loaded into a first retainer 5 to form a first steel ball group and are placed into a lower shell groove 16, then a first inner ring groove 7 on an inner ring 3 is embedded into a lower shell 2 corresponding to the first steel ball group, then the rest steel balls 17 are loaded into a second retainer 4 to form a second steel ball group and are placed into a second inner ring groove 6, then an upper cover groove 15 on an upper cover 1 is loaded into the lower shell 2 corresponding to the second steel ball group and is fastened through ultrasonic welding, the assembly of the plastic bearing is completed, when the bearing works, a motor 12 drives the inner ring 3 to rotate through the transmission cooperation of first-stage straight teeth 9 and face teeth 13, a relatively large transmission ratio can be realized, and the problems that a small motor in the existing bearing transmission device needs to be matched with a gear box or multi-stage gear transmission, and a large motor needs to be matched with first-stage transmission or belt transmission are solved, and upper cover 1, lower casing 2 and inner circle 3 are the plastic part, can directly the die sinking production, need not pass through the machining process again, have saved the processing cost, and in the transmission process, extension spring 10 has eliminated the clearance between one-level straight-tooth 9 and the face tooth 13 for can closely interlock between one-level straight-tooth 9 and the face tooth 13, make whole transmission process more stable.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A plastic bearing transmission device is characterized in that: comprises an upper cover (1) made of plastic, a lower shell (2), an inner ring (3) nested between the upper cover (1) and the lower shell (2), a first steel ball group, a second steel ball group and a motor module, the first steel ball group is arranged between the lower shell (2) and the inner ring (3), so as to eliminate the gap between the lower shell (2) and the inner ring (3), the second steel ball group is arranged between the upper cover (1) and the inner ring (3), so as to eliminate the gap between the upper cover (1) and the inner ring (3), the top of the upper cover (1) is provided with an assembly hole (14), the motor module comprises a motor (12), the output end of the motor (12) is fixedly connected with a primary straight tooth (9), the inner ring (3) upper surface is equipped with face tooth (13), one-level straight-tooth (9) pass pilot hole (14) with face tooth (13) meshing.

2. The plastic bearing transmission device of claim 1, wherein: the motor module further comprises a support (8), the motor (12) is installed in the support (8) through a screw (11), and the support (8) is elastically arranged in the assembling hole (14).

3. The plastic bearing transmission device of claim 2, wherein: one end of the support (8) is hinged with the upper cover (1), and the other end of the support is fixedly connected with the upper cover (1) through an extension spring (10).

4. The plastic bearing transmission device of claim 1, wherein: first steel ball group includes that first holder (5) and equidistance set up a plurality of steel ball (17) on first holder (5), inner circle (3) lateral wall is equipped with first inner circle slot (7), casing (2) inside wall is equipped with inferior valve slot (16) down, first steel ball group arranges in first inner circle slot (7) with in the space that inferior valve slot (16) formed.

5. The plastic bearing transmission device of claim 1, wherein: the second steel ball group includes that second holder (4) and equidistance set up a plurality of steel ball (17) on second holder (4), inner circle (3) top is equipped with second inner circle slot (6), upper cover (1) bottom is equipped with upper cover slot (15), the second steel ball group is arranged in second inner circle slot (6) with in the space that upper cover slot (15) formed.