CN1594871A

CN1594871A - Speed reducer with starter for speed retarding device

Info

Publication number: CN1594871A
Application number: CN 200410025644
Authority: CN
Inventors: 陈萌
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-22
Filing date: 2004-06-22
Publication date: 2005-03-16

Abstract

The present invention discloses a speed reducer with starter which is composed of a housing and a speed reducing gear ring fixed in the housing, and is characterized in that it also includes a buffer claw, a buffer member and a buffer chamber disposed at the contact place of the speed reducing gear ring outer wall and the housing inner wall, the buffer claw and the buffer member combines a buffer device and are inserted into the buffer chamber together. Because the workload increased at the moment of starting the starter is partly slow released by the deformation of the buffer member during the using process, thereby the peak value of the work current is effectively reduced and the protection for the motor and other components. In addition, the speed reducer also has the advantages of simple production technics and convenient machining during component producing and machining process.

Description

The retarder that has the retarding device starter motor

Technical field

The starter motor that the present invention relates on the motor of automobile or internal-combustion engine is made the field, refers more particularly to a kind of retarder of starter motor.

Background technique

The starter motor that has speed reducer, owing to its starter motor volume, weight are dwindled greatly and is widely adopted, wherein speed reducer generally has three kinds of external tooth slowdown type, internal tooth slowdown type or planetary reduction gear formulas.Because the epicyclic type body is long-pending little, compact structure and being widely used.General planet deceleration starter generally has a direct current generator and a planetary reducer at present, and planetary gear ring is directly fixed on the shell of starter motor, and motor produces torque and passes to coaxial gearing device by armature shaft gear, planetary pinion.Because the motor of this starter motor passes square and directly exports by coaxial gearing device, when the moment of starter motor and engine engaged, load increases suddenly on the starter motor, causes the interior starting current of motor coil significantly to rise, and also very easily causes the damage of some mechanical parts simultaneously.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of damping device, and the increasing degree of motor interior loop electric current reduces the infringement to parts when increasing to improve motor load.

The present invention is by following realization: a kind of retarder that has the retarding device starter motor, constitute by shell and reduction gear ring, reduction gear ring is fixed in the shell, it is characterized in that it also comprises buffering pawl, shock absorber, and the buffer cell of offering in reduction gear ring outer wall and outer casing inner wall contacting point, the buffering pawl is combined into buffer stopper with shock absorber and is inserted in the buffer cell.

Buffer cell is located at outer casing inner wall, and it is outstanding that reduction gear ring outer wall and buffer cell corresponding part are provided with the buffering pawl, and shock absorber is inserted in the gap of buffering pawl and buffer cell sidewall.

The buffering pawl can be designed to " L " shape, and shock absorber is cylindrical or prismatic, cooperates the composition damping device with the buffering pawl, and shock absorber can be with pressure spring or block rubber.

Because the present invention in use, with the starter motor working load that moment increases that starts to work, the distortion by shock absorber realizes obtaining the part slowly-releasing, thereby has reduced the peak value of operating current effectively, has realized the protection to motor and miscellaneous part.In addition, in the parts process of manufacture, production technology advantage simple, easy to process is arranged also.

Description of drawings

Fig. 1 is a structural representation of the present invention

Fig. 2 is reduction gear ring of the present invention and shell cooperating structure schematic representation.

Embodiment

Embodiment 1: constitute the retarder that has the retarding device starter motor by shell 2 and reduction gear ring 1.Offer six buffer cells 5 at reduction gear ring 1 outer wall and shell 2 inwall contacting points respectively by 60 ° of angles, buffer cell 5 separated into two parts, a part is located at the outer wall of reduction gear ring 1, another parts are located at the inwall of shell 2, be processed into the groove shape on the outer wall with reduction gear ring 1 earlier, the same machined grooves shape of the inwall of Dui Ying shell 2 therewith, its recess width is less than the groove on the outer wall of reduction gear ring 1, buffering pawl 3 is a pin key, be inserted on the groove on the outer wall of reduction gear ring 1, in the gap of the sidewall that cushions pawl 3 and shell 2 buffer cells 5, insert letter and be the spring of shock absorber 4, formed the damping device of retarder.

Such buffer is when work; owing between reduction gear and the shell 2 a slight rotation angle is arranged; when starter motor is loaded suddenly; reduction gear can rotate; shock absorber 4 is produced an extruding; the torque energy transfer that load is produced is given shock absorber 4, thereby has realized the steady of starting current, reaches the purpose of protection parts.

Embodiment 2: with reference to embodiment 1, buffering pawl 3 is made and one adjustment of assembly method do, offer three buffer cells 5 at reduction gear ring 1 outer wall and shell 2 inwall contacting points respectively by hexagonal angle, to cushion pawl 3 and be designed to " L " shape, its with the outer wall of reduction gear ring 1 on groove on the degree of depth of the thickness of surface of contact and groove identical, after being assemblied in the outer wall upper groove of reduction gear ring 1, the radian of formation is identical with the circular arc of reduction gear ring 1.Shock absorber 4 sides are selected the prismatic block rubber for use, cooperate with buffering pawl 3 and form buffer stopper, together are inserted in the buffer cell 5, have formed the damping device of retarder.

Embodiment 3: with reference to embodiment 1, the buffering pawl 3 of pin key shape can rheo-die-casting be on the outer wall of reduction gear ring 1 when making reduction gear ring 1 by the mode that forges and presses, and the making of miscellaneous part is identical with embodiment 1.

Claims

1, a kind of retarder that has the retarding device starter motor, constitute by shell (2) and reduction gear ring (1), reduction gear ring (1) is fixed in the shell (2), it is characterized in that it also comprises buffering pawl (3), shock absorber (4), and the buffer cell of offering in reduction gear ring (1) outer wall and shell (2) inwall contacting point (5), the damping device that buffering pawl (3) is combined into shock absorber (4) is inserted in the buffer cell (5).

2, the retarder that has the retarding device starter motor as claimed in claim 1, its feature is that also described buffer cell (5) is located at the inwall of shell (2), it is outstanding that reduction gear ring (1) outer wall and buffer cell (5) corresponding part are provided with buffering pawl (3), and shock absorber (4) is inserted in the gap of buffering pawl (3) and buffer cell (5) sidewall.

3, the retarder that has the retarding device starter motor as claimed in claim 1, its feature are that also described buffering pawl (3) is " L " shape, and shock absorber (4) is a prismatic, cooperate with buffering pawl (3) and form buffering apparatus.

4, the retarder that has the retarding device starter motor as claimed in claim 1 or 2, its feature are that also described shock absorber (4) is a pressure spring.

5, the retarder that has the retarding device starter motor as claimed in claim 1 or 2, its feature are that also described shock absorber (4) is a block rubber.