CN214661866U - Install firm small-size gear box structure - Google Patents

Abstract

The utility model provides a small gear case structure with firm installation, which comprises a case body, wherein one end of the case body is provided with a cover plate, an output shaft is arranged in the cover plate, the cover plate is integrally formed with at least two cylindrical clamping columns, the clamping columns protrude out of one side of the cover plate far away from the case body, and all the clamping columns are uniformly distributed around the output shaft; the outer laser welding of output shaft has fixed cover, is equipped with the hole of stepping down in the apron, installs first bearing in the hole of stepping down, and fixed cover compresses tightly installs in first bearing. The utility model discloses be provided with screens post structure on the apron surface, connect to connect when using and insert and can realize stable installation effect, and cylindric screens post convenient to align, installation convenient operation, a plurality of integration set up and can effectively avoid appearing harmfully such as pine and take off in the screens post of apron, and the mounting structure is firm reliable, welds through fixed cover between output shaft and the bearing, can effectively eliminate axial clearance to effectively improve the driven reliability of output shaft.

Description

Install firm small-size gear box structure

Technical Field

The utility model relates to a gear box specifically discloses a firm small-size gear box structure of installation.

Background

The gear box is generally used for cooperating the motor to form the transmission effect of variable speed, and the gear box is widely used in fields such as intelligent house, intelligent car and industrial application. Planetary gear mechanisms are typically provided inside the gearbox to achieve a corresponding variable speed drive effect.

Along with the continuous progress of science and technology, in the different fields, more and more original mechanism for people's hand drive is replaced by motor drive, for improving driven stability, use gear box cooperation motor to realize transmission function usually, the gear box directly uses the screw to install in the bearing structure who corresponds after connecting the motor usually, when being applied to the less mechanism of size such as miniature electrically operated gate lock, because the installation degree of difficulty that the space is not enough with serious increase gear box, and the easy emergence of mounting structure takes off the scheduling problem.

SUMMERY OF THE UTILITY MODEL

Therefore, the small gear box structure is needed to be provided for solving the problems in the prior art, the installation is firm, the operation is convenient, the installation structure is firm and reliable, and the output transmission is stable.

In order to solve the prior art problem, the utility model discloses a small gear box structure with firm installation, which comprises a box body, wherein one end of the box body is provided with a cover plate, an output shaft is arranged in the cover plate, the cover plate is integrally formed with at least two cylindrical clamping columns, the clamping columns protrude out of one side of the cover plate away from the box body, and all the clamping columns are uniformly distributed around the output shaft;

the outer laser welding of output shaft has fixed cover, is equipped with the hole of stepping down in the apron, installs first bearing in the hole of stepping down, and fixed cover compresses tightly installs in first bearing.

Furthermore, a motor is arranged on one side of the box body, which is far away from the cover plate.

Furthermore, the cover plate is of a circular structure with the radius of R, the radius of the clamping column is R, and R is more than or equal to 0.1R and less than or equal to 0.2R.

Furthermore, the length of the clamping column is L, and L is more than or equal to 2r and less than or equal to 3 r.

Furthermore, screens post is equipped with two, and two screens posts are located the relative both sides of output shaft.

Furthermore, a second bearing is further arranged in the yielding hole, the output shaft is further connected into the second bearing, and an interval is formed between the first bearing and the second bearing.

Furthermore, the cover plate and the box body are of an integrally formed structure.

The utility model has the advantages that: the utility model discloses a firm small-size gear box structure of installation is provided with screens post structure on the apron surface, connect to insert during the application and can realize stable installation effect, need not the cooperation and use extra mounting tool, and cylindric screens post counterpoint convenient, installation convenient operation, a plurality of integration set up and can effectively avoid appearing the pine and take off harmfully such as in the screens post of apron, the mounting structure is firm reliable, weld through fixed cover between output shaft and the bearing, axial clearance can effectively be eliminated, thereby effectively improve the driven reliability of output shaft.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic cross-sectional view of the local structure of the present invention passing through the central axis.

Fig. 3 is a schematic side view of an embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view of a partial structure of the present invention passing through a central axis.

The reference signs are: the device comprises a box body 10, a motor 11, a cover plate 20, a clamping column 21, a yielding hole 22, an output shaft 30, a fixing sleeve 31, a first bearing 32 and a second bearing 33.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Refer to fig. 1 to 4.

The embodiment of the utility model discloses a firm small-size gear box structure of installation, as shown in fig. 1, 2, including cylindric box 10, one end of box 10 is equipped with apron 20, be equipped with output shaft 30 in the apron 20, apron 20 integrated into one piece has at least two cylindric screens posts 21, screens posts 21 and apron 20 are the integrated structure that the metal powder injection obtained, in the use, can effectively avoid screens posts 21 to skew, pine takes off the scheduling problem, whole gear box structure is more reliable, especially when being applied to positive and negative load switching, be difficult to appear the bad phenomenon of pine taking off, screens posts 21 bulge in apron 20 keep away from one side of box 10, all screens posts 21 evenly distributed around output shaft 30, screens posts 21 and output shaft 30 contactless, the utility model discloses the cylindrical screens 21 of well circle connects and inserts conveniently, and the fault-tolerant rate is high, and the size is easy to guarantee, the production cost is low, complex alignment operation is not needed when the positioning device is installed on a bearing structure, the positioning device can be installed by directly inserting the positioning device into a hole of the corresponding bearing structure, the installation operation is convenient, the installation can be completed without matching of corresponding tools, and the firmness of installation and positioning can be effectively improved by at least two clamping columns 21;

the laser welding is carried out outside the output shaft 30 to form a fixing sleeve 31, the cover plate 20 is provided with a abdicating hole 22, the first bearing 32 is arranged in the abdicating hole 22, the fixing sleeve 31 is tightly pressed and arranged in the first bearing 32, the output shaft 30 is fixedly connected with the fixing sleeve 31 in a laser spot welding mode, after the fixing sleeve 31 is sleeved in the output shaft 30 and tightly pressed and arranged in the first bearing 32, two welding points are spot-welded at the joint of the fixing sleeve 31 and the output shaft 30 for one circle by using laser, namely at least two laser welding points are formed between the fixing sleeve 31 and the output shaft 30, so that the materials of the output shaft 30 and the fixing sleeve 31 are fused together to play a role of fixing the output shaft 30, thereby obtaining the effect of zero axial distance of the output shaft 30, the clamp spring connecting structure in the traditional technology is replaced by adopting a laser welding mode, and not only the axial gap caused by clamp spring groove and clamp spring thickness tolerance can be effectively avoided, the bearing strength of the output shaft 30 can be effectively improved, the axial movement is reduced, and the transmission performance of the gear box can be effectively improved.

In this embodiment, a motor 11 is disposed on one side of the box 10 away from the cover plate 20, preferably, a bottom plate is further connected between the motor 11 and the box 10, an output end of the motor 11 is connected with the output shaft 30 through a reduction gear set, inner threads engaged with the reduction gear set are disposed on an inner wall of the box 10, the reduction gear set is located in the box 10, preferably, the reduction gear set includes a planet carrier, a sun gear and at least three planet gears, the sun gear is connected with the output end of the motor 11, the output shaft 30 is pressed in the planet carrier, the planet gears are engaged between the sun gear and the inner threads, and the reduction gear set may also be a transmission gear assembly having other different structural functions.

In the embodiment, the cover plate 20 is a circular structure with a radius R, the radius of the position-locking column 21 is R, and R is greater than or equal to 0.1R and less than or equal to 0.2R, so that sufficient space for arranging the position-locking column 21 can be ensured in the cover plate 20, and preferably, R is 6-10 mm.

Based on the above embodiment, the length of the clipping column 21 is L, L is not less than 2r and not more than 3r, the size of the clipping column 21 can be effectively limited, the length of the clipping column is not too large, the mounting and the positioning can be effectively and conveniently performed, meanwhile, the positioning effect is firm and stable due to the sufficient length, and preferably, L is 2.2 mm.

In this embodiment, the two position-locking columns 21 are arranged, and the two position-locking columns 21 are located on two opposite sides of the output shaft 30, so that materials can be effectively saved, and meanwhile, the firmness of installation and positioning can be effectively ensured.

In this embodiment, still be equipped with second bearing 33 in the hole of stepping down 22, output shaft 30 still connects in second bearing 33, be formed with the interval between first bearing 32 and the second bearing 33, can avoid influencing each other between first bearing 32 and the second bearing 33, can effectively improve two bearings simultaneously and stride across the length on the output shaft 30, can further improve the stability of gear box overall structure, can effectively reduce the burden of bearing, preferably, the hole of stepping down 22 sets up to the I-shaped, two bearings are installed in the upper and lower both sides of the hole of stepping down 22, installation convenient operation, preferably, second bearing 33 is located one side that first bearing 32 kept away from screens post 21, be equipped with the gasket between second bearing 33 and the reduction gear set.

Based on any of the above embodiments, as shown in fig. 3 and 4, the cover plate 20 and the box body 10 are in an integrally formed structure, that is, the cover plate 20 and the box body 10 are produced by adopting an integral split mold injection mold opening structure, so that a large number of machining processes and assembling processes are simplified, the production efficiency can be effectively improved, the degree of integration is high, the concentricity of the integral structure of the gear box is high, and the output power is stable and reliable. Alternatively, the cover plate 20 is press-fitted into the case 10 with interference.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (7)

1. A small gear box structure with firm installation comprises a box body (10), wherein a cover plate (20) is arranged at one end of the box body (10), and an output shaft (30) is arranged in the cover plate (20), and is characterized in that at least two cylindrical clamping columns (21) are integrally formed on the cover plate (20), the clamping columns (21) protrude out of one side, far away from the box body (10), of the cover plate (20), and all the clamping columns (21) are uniformly distributed on the periphery of the output shaft (30);

the outer laser welding of output shaft (30) has fixed cover (31), be equipped with in apron (20) and give way hole (22), install first bearing (32) in the hole of giving way (22), fixed cover (31) compress tightly install in first bearing (32).

2. A compact securely mounted gear box structure according to claim 1, characterised in that the side of the box (10) remote from the cover plate (20) is provided with an electric motor (11).

3. A securely mounted miniature gearbox arrangement according to claim 1, characterized in that said cover plate (20) is a circular structure with radius R, and said capture column (21) has radius R, 0.1R ≦ R ≦ 0.2R.

4. A securely mounted miniature gearbox arrangement according to claim 3, whereby said position-retaining stud (21) has a length L, 2r ≦ L ≦ 3 r.

5. A securely mounted miniature gearbox arrangement according to claim 1, characterized in that said detention posts (21) are provided in two, two of said detention posts (21) being located on opposite sides of said output shaft (30).

6. A securely mounted miniature gearbox arrangement according to claim 1, whereby a second bearing (33) is further provided in said relief bore (22), said output shaft (30) being further connected within said second bearing (33), said first bearing (32) being spaced from said second bearing (33).

7. A securely mounted miniature gearbox assembly according to claim 1 wherein said cover plate (20) is of unitary construction with said housing (10).

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