CN2822012Y

CN2822012Y - DC motor speed reducer

Info

Publication number: CN2822012Y
Application number: CN 200520114308
Authority: CN
Inventors: 况开平
Original assignee: BAISHENG DOOR-CONTROL APPARATUS Co Ltd JIANGXI
Current assignee: BAISHENG DOOR-CONTROL APPARATUS Co Ltd JIANGXI
Priority date: 2005-07-22
Filing date: 2005-07-22
Publication date: 2006-09-27
Anticipated expiration: 2015-07-22

Abstract

The utility model relates to a DC motor speed reducer, particularly to a DC motor speed reducer which has the functions of speed reduction, dynamic clutch and spacing. The DC motor speed reducer comprises a motor, a worm, a worm gear, an output shaft, a box body, an upper cover and a lower cover, wherein the worm gear is freely sheathed on the output shaft and is engaged with the worm; a set of dynamic clutch device is installed on the upper cover; the upper cover and the lower cover are designed into a symmetrical shape; the box body is designed into up-down communication; a signal receiver is fixed on the upper cover; a signal source magnetic ring is installed on the worm; the signal receiver can receive signals which are emitted by the signal source magnetic ring. The DC motor speed reducer has the advantages that the running is balanced; the output shaft can exchange direction; under the power cut state, the original electric operation can be changed into manual operation; the utility model is very convenient when in use.

Description

The direct current machine decelerator

Technical field

The utility model relates to a kind of direct current machine decelerator, particularly relates to a kind of direct current machine decelerator with deceleration, power clutch and limit function.

Background technology

At present, widely used direct current machine decelerator on the market, all be a kind of single use worm screw, worm gear reducer outputting power, its output shaft all be folk prescription to output, limited the scope of application of direct current machine, upwards use when installing at left, then need to buy output shaft direct current machine decelerator left, if when on right, needing to install and use, then need to buy in addition output shaft direct current machine decelerator to the right, increased user's expense expenditure.In addition, because widely used direct current machine decelerator does not all have stopping means on the market, generally be the even running that stopping means comes control gate body itself to be set by control door body self, like this door body structure of controlling not only complicated, also increased door control devices volume and cost, simultaneously also can cause the decelerator cisco unity malfunction, use to the user and brought great inconvenience owing to reasons such as power failures.

Summary of the invention

Given this, the purpose of this utility model is to provide a kind of operating steadily, and output shaft can be changed direction, when power down mode, and can be with the original electronic manual dc micro-motor decelerator that is converted into.

In order to achieve the above object, the purpose of this utility model is to be achieved through the following technical solutions: this direct current machine decelerator, comprise motor, worm screw, worm gear, output shaft, casing, loam cake, lower cover, the worm gear sky is enclosed within on the output shaft, and be meshed with worm screw, described worm gear has worm gear latch groove, has helicla flute and opening straight trough on the described output shaft.On cover a cover power-off device be installed, this power-off device is made up of push rod, sliding pin, special pin, back-moving spring, described push rod one end punching out has interior hexagonal, the other end is sold with spy in being placed in output shaft upper shed straight trough and is contacted.This spy's pin matches with described worm gear latch groove.Described sliding pin is installed on the described push rod, matches with helicla flute on the output shaft.Loam cake and lower cover are designed to symmetric shape, and cabinet design becomes up/down perforation, cover on described and are fixed with signal receiver, and the signal source magnetosphere is housed on the worm screw, the signal that described signal receiver can received signal source magnetosphere sends.

The utility model is by being designed to symmetry status to loam cake and lower cover, cabinet design becomes up/down perforation, like this when assembling, as long as the position that transposing is somebody's turn to do up and down, just can change the direction that orientation on the casing changes output shaft that is contained in of Worm-gear assembly, solve the single problem of existing output shaft direction.Increased by a cover power-off device last covering, can convert manual operation to, solved owing to reasons such as power failures with electronic, the motor irregular working, and devices such as Men Ti are by manually can use in the same old way.In addition, loam cake is provided with signal receiver, the signal source magnetosphere is housed on the worm screw, signal receiver by receive the signal source magnetosphere sends on the worm screw signal test worm screw turn-take number calculate the range ability that installs such as the Men Ti of controlling, thereby set its spacing scope.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a left view of the present utility model;

Fig. 3 is a stopping means schematic diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described: as shown in Figure 1 and Figure 2, this direct current machine decelerator, comprise motor 1, worm screw 2, worm gear 3, output shaft 6, casing 9, loam cake 11, lower cover 4, worm gear 3 skies are enclosed within on the output shaft 6, and be meshed with worm screw 2, described worm gear 3 has worm gear latch groove 10, has helicla flute 15 and opening straight trough 8 on the described output shaft 6.One cover power-off device 12 is installed on the loam cake 11, this power-off device 12 is made up of push rod 13, sliding pin 14, special pin 5, back-moving spring 7, described push rod 13 1 end punching out have interior hexagonal, and the other end is sold 5 with spy in being placed in output shaft 6 upper shed straight troughs 8 and contacted.This spy sells 5 and matches with described worm gear latch groove 10.Described sliding pin 14 is installed on the described push rod 13, matches with helicla flute 15 on the output shaft 6.Loam cake 11 is designed to symmetric shape with lower cover 4, and casing 9 is designed to up/down perforation, is fixed with signal receiver 17 on described loam cake 11, and signal source magnetosphere 16 is housed on the worm screw 2, the signal that described signal receiver 17 energy received signal source magnetospheres 16 send.

During work, motor 1 drove worm screw 2 rotations before this, because worm screw 2 and empty worm gear 3 engagements that are enclosed within on the output shaft 6 drive worm gear 3 rotations, output shaft 6 passed to power again by worm gear 3.If have a power failure or other reasons, when causing motor 1 not work, can be by in the interior hexagonal on the special-purpose outer-hexagonal spanner insertion push rod 13, turn push rod 13, thereby promoting push rod 13 moves forward along the helicla flute 15 on the output shaft 6 by sliding pin mounted thereto 14, the front end of push rod 13 heads on special pin 5 always, it is slowly moved forward along the pressure that the opening straight trough 8 of output shaft 6 heads on back-moving spring 7, sell the 5 worm gear latch grooves 10 that break away from worm gear 3 sides fully up to the spy, at this moment output shaft 6 just can dally in worm gear 3.When the incoming call needs are electronic, can insert in the interior hexagonal on the push rod 13 by die nut, the push rod of turn in the other direction 13, thereby push rod 13 is return in the other direction along the helicla flute 15 on the output shaft 6 by sliding pin mounted thereto 14, at this moment, the front end of push rod 13 and special pin 5 break away from, and the spy sells 5 under back-moving spring 7 elastic force effects, opening straight trough 8 along output shaft 6 reenters in the worm gear latch groove 10 of worm gear 3 sides, so that the electronic again work of motor.As Fig. 3, on loam cake 11, be fixed with signal receiver 17, signal source magnetosphere 16 is housed on the worm screw 2, the signal that sends by signal receiver 17 received signal source magnetospheres 16, calculate the number of turns that worm screw 2 is rotated, thus set out the range of operation of device such as the Men Ti of controlling, reach position-limiting action.

Claims

1, a kind of direct current machine decelerator, comprise motor, worm screw, worm gear, output shaft, casing, loam cake, lower cover, it is characterized in that, worm gear (3) sky is enclosed within on the output shaft (6), and be meshed with worm screw (2), one cover power-off device (12) is installed on the loam cake (11), loam cake (11) is designed to symmetric shape with lower cover (4), casing (9) is designed to up/down perforation, on described loam cake (11), be fixed with signal receiver (17), signal source magnetosphere (16) is housed, the signal that described signal receiver (17) energy received signal source magnetosphere (16) sends on the worm screw (2).

2, direct current machine decelerator according to claim 1 is characterized in that, described worm gear (3) has worm gear latch groove (10).

3, direct current machine decelerator according to claim 1 is characterized in that, has helicla flute (15) and opening straight trough (8) on the described output shaft (6).

4, direct current machine decelerator according to claim 1 is characterized in that, described power-off device (12) is made up of push rod (13), sliding pin (14), special pin (5), back-moving spring (7).

5, direct current machine decelerator according to claim 4 is characterized in that, described push rod (13) one end punching out have interior hexagonal, and the other end contacts with spy pin (5) in being placed in output shaft (6) upper shed straight trough (8).

6, direct current machine decelerator according to claim 4 is characterized in that, described sliding pin (14) is installed on the described push rod (13), matches with helicla flute (15) on the output shaft (6).

7, direct current machine decelerator according to claim 4 is characterized in that, described special pin (5) matches with described worm gear latch groove (10).