CN115263633A

CN115263633A - Improved starter

Info

Publication number: CN115263633A
Application number: CN202210992480.9A
Authority: CN
Inventors: 金介磊; 王宏伟; 王亚玲
Original assignee: Ningbo Zhenhai Jinteng Electrical Equipment Co ltd
Current assignee: Ningbo Zhenhai Jinteng Electrical Equipment Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2022-11-01

Abstract

The utility model provides an improved generation starter, belongs to automobile starter technical field, includes motor, electromagnetic switch and drive shaft, the drive shaft facial make-up is equipped with drive gear, electromagnetic switch installs on the motor shaft of motor. The electromagnetic switch comprises a control sleeve which is sleeved on a motor shaft and can move axially, one end of the control sleeve is connected with a clutch sleeve, the clutch sleeve comprises a connection transmission part and a clutch part, the connection transmission part is connected with the motor shaft, and the clutch part is connected with a driving shaft. Compared with the prior art, this application will connect drive gear's drive shaft and the motor shaft separation setting of motor, lets drive gear and flywheel mesh all the time, through the torque transmission between clutch sleeve control motor and the drive gear, has avoided milling the tooth phenomenon, has reduced the noise to reduce because meshing, break away from the wearing and tearing that the switching leads to, improved the life of starter greatly.

Description

Improved starter

Technical Field

The invention belongs to the technical field of automobile starters, and particularly relates to an improved starter.

Background

Automobile starters are key components of automobile starting systems. The working principle is as follows: the electric energy of the storage battery is converted into mechanical energy, the mechanical energy is transmitted to a gear ring of an engine flywheel through a driving gear of the transmission mechanism, the resistance moment of the engine is overcome, and the engine in a static state is started to enable the automobile to normally run. Wherein, the key of the transmission is to mesh the driving gear and the flywheel. In the traditional technology, the process is realized by controlling the on-off of a circuit of a starter and the meshing and the disengagement of a driving gear and a gear ring by a control mechanism, and mainly comprises the meshing modes such as forced meshing, flexible meshing and the like.

Forced meshing is the most used meshing mode of the existing automobile starter, and the working principle is that a driving gear is pushed to a flywheel for meshing through a shifting fork and other structures. During meshing, if the gear teeth of the driving gear are just aligned with the tooth grooves of the flywheel, the gear teeth are smoothly meshed; if the gear teeth of the driving gear are aligned with the gear teeth of the flywheel, a tooth ejecting phenomenon occurs, and the meshing spring is compressed. When the motor is electrified and rotates, the gear teeth of the driving gear correspond to the tooth grooves of the flywheel after the driving gear rotates by a small angle, and the front top of the driving gear is meshed with the flywheel under the action of the meshing spring. And flexible meshing is that when taking place the apical tooth, drive gear can rotate to can automatic fork and open the apical tooth, make the gear be in the meshing state smoothly all the time.

The above-described engagement method has the following problems: 1. the gear milling phenomenon exists, the gear teeth of the driving gear of the starter can be abutted against the gear teeth of the flywheel, and the tooth top of the driving gear rotates at a high speed along the end face of the gear teeth of the flywheel, so that the flywheel is milled to be damaged, and the driving gear can be damaged. 2. During the tooth ejecting process, large noise can be generated due to high-speed friction. 3. The driving gear and the flywheel are frequently switched between disengagement and engagement, so that severe abrasion is caused, the service life is greatly shortened, and frequent replacement and maintenance are performed.

Accordingly, the present application is directed to further designs and improvements based on certain of the above-identified circumstances in the prior art.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an improved starter, wherein a driving shaft connected with a driving gear and a motor shaft of a motor are arranged in a separated mode, the driving gear and a flywheel are always meshed, torque transmission between the motor and the driving gear is controlled through a clutch sleeve, the gear milling phenomenon is avoided, noise is reduced, abrasion caused by meshing and disengaging switching is reduced, and the service life of the starter is greatly prolonged.

In order to solve the above technical problems, the present invention is solved by the following technical solutions.

An improved starter comprises a motor, an electromagnetic switch and a driving shaft, wherein a driving gear is arranged on the driving shaft. The electromagnetic switch is arranged on a motor shaft of the motor. The electromagnetic switch comprises a control sleeve which is sleeved on a motor shaft and can move axially, one end of the control sleeve is connected with a clutch sleeve, the clutch sleeve comprises a connection transmission part and a clutch part, the connection transmission part is connected with the motor shaft, and the clutch part is connected with a driving shaft.

The beneficial effects of this kind of structural design lie in: the driving gear is always meshed with a flywheel of an automobile engine, and the clutch sleeve controls the connection and transmission of a motor shaft and the driving shaft, so that the driving gear is prevented from being abraded due to rigid meshing.

In a preferred embodiment, a transmission block is arranged in the connection transmission part, and a transmission chute adapted to the shape of the transmission block is arranged on the end surface of the motor shaft. The transmission block is always positioned in the transmission chute in the axial movement process of the clutch sleeve, so that the clutch sleeve and the motor shaft are always in a connection state to transmit power.

In a preferred embodiment, a clutch block is disposed in the clutch portion, and a clutch runner corresponding to the shape of the clutch block is disposed on the drive shaft. The clutch block is separated from the clutch chute when the clutch sleeve moves to the limit position towards the direction of the motor. When the clutch sleeve moves to the extreme limit position towards the direction of the motor, the driving shaft is disconnected with the motor shaft, and when the clutch sleeve moves to the extreme limit position towards the direction of the driving gear, the driving shaft is connected with the motor shaft for transmission.

In a preferred embodiment, the transmission block and the clutch block are cruciform. The transmission block and the clutch block have enough strength, and the fracture caused by overlarge transmission torque is avoided.

In a preferred embodiment, the side surface of the clutch sliding groove and the end surface of the driving shaft form an arc curved surface transition. So that the clutch block can slide into the clutch chute along the curved surface of the arc line.

In a preferred embodiment, the clutch sliding groove is twisted around the axial direction along the groove depth direction, and the twisting angle is 5-10 degrees. So that the engagement of the clutch block and the clutch chute is tighter.

In a preferred embodiment, the electromagnetic switch includes a mounting seat, a through hole is provided in the mounting seat for a motor shaft to pass through, and the control sleeve is sleeved on the mounting seat. The assembling seat is provided with a butt flange, the butt flange is provided with a passive adsorption part, the control sleeve is provided with a sleeving end, and one side of the sleeving end, which is opposite to the butt flange, is provided with an active adsorption part corresponding to the passive adsorption part. And a return spring is arranged between the abutting flange and the sleeve joint end. The axial movement of the control sleeve is realized by controlling the electromagnetic switch, and then the clutch switching of the clutch sleeve is controlled.

In a preferred embodiment, a detection structure is arranged on the motor shaft, and the detection structure comprises detection convex strips and detection grooves which are arranged at intervals. And a detection head aligned with the detection structure is arranged on the end face of the assembling base. The clutch sleeve can deflect at a certain angle when the clutch block enters the clutch sliding groove to drive the motor shaft to deflect, and the detection head detects whether the clutch sleeve is combined in place or not through the deflection of the detection structure.

In a preferred embodiment, a first fixing hole is formed in the bottom of the assembling seat, a second fixing hole is formed in the motor, and the first fixing hole and the second fixing hole are assembled and connected through a fixing connecting piece. The assembly is simple, and the cooperation is firm.

In a preferred embodiment, the clutch sleeve is provided with an assembly groove, the control sleeve is provided with a rotary connecting piece, and the rotary connecting piece is arranged in the assembly groove. The control sleeve can drive the clutch sleeve to move axially, and meanwhile, the control sleeve is prevented from being driven by the rotation movement of the clutch sleeve.

Compared with the prior art, the method has the following beneficial effects: the improved starter is characterized in that a driving shaft connected with a driving gear and a motor shaft of a motor are arranged in a separated mode, the driving gear and a flywheel are meshed all the time, torque transmission between the motor and the driving gear is controlled through a clutch sleeve, the gear milling phenomenon is avoided, noise is reduced, abrasion caused by meshing and disengaging switching is reduced, and the service life of the starter is greatly prolonged.

Drawings

Fig. 1 is a perspective view of the present application.

Fig. 2 is a schematic structural diagram of a transmission part of the present application.

Fig. 3 is a perspective view of the structure inside the control sleeve.

Fig. 4 is a perspective view of the structure inside the clutch sleeve.

Fig. 5 is a schematic structural view of a motor shaft portion of the motor.

Fig. 6 is a perspective view of the mounting socket.

Fig. 7 is a perspective view of the driving shaft and the driving gear.

Fig. 8 is a schematic structural view of the clutch sleeve.

The following are labeled descriptions in the drawings of the present application:

1. an electric motor; 11. a second fixing hole;

2. a motor shaft; 21. a transmission chute; 22. detecting the structure; 221. detecting the convex strips; 222. detecting the groove;

3. an electromagnetic switch; 31. assembling a seat; 311. a through hole; 312. a first fixing hole; 313. an abutment flange; 314. a passive adsorption member; 32. a control sleeve; 321. a sleeving end; 322. an active adsorption member; 33. rotating the connecting piece; 34. a return spring; 35. a detection head;

4. a drive shaft; 41. a clutch chute;

5. a drive gear;

6. a clutch sleeve; 61. a transmission block; 62. a clutch block; 63. assembling the groove;

7. and fixing the connecting piece.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The embodiments described below by referring to the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout, are exemplary only for explaining the present invention, and are not construed as limiting the present invention.

In describing the present invention, it is to be understood that the terms: the terms center, longitudinal, lateral, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, and thus, should not be construed as limiting the present invention. Furthermore, the terms: first, second, etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features shown. In describing the present invention, unless otherwise expressly specified or limited, the terms: mounting, connecting, etc. should be understood broadly, and one of ordinary skill in the art will understand the specific meaning of the terms used in this application as appropriate.

Referring to fig. 1 to 8, an improved starter comprises a motor 1, an electromagnetic switch 3 and a driving shaft 4, wherein a driving gear 5 is arranged on the driving shaft 4. The motor 1 and the electromagnetic switch 3 are electrically connected with an external control device.

The application is substantially characterized in that: the electromagnetic switch 3 is mounted on the motor shaft 2 of the motor 1. But electromagnetic switch 3 is including cup jointing on motor shaft 2 and axial displacement's control sleeve 32, control sleeve 32 one end is connected with separation and reunion sleeve 6, separation and reunion sleeve 6 cavity, separation and reunion sleeve 6 is including connecting transmission portion and separation and reunion portion, connect transmission portion and motor shaft 2 coaxial coupling, separation and reunion portion and 4 coaxial coupling of drive shaft. The driving gear 5 is always meshed with a flywheel of an automobile engine, and the clutch sleeve 6 is used for controlling the connection and transmission of the motor shaft 2 and the driving shaft 4, so that the driving gear 5 is prevented from being abraded due to rigid meshing.

Wherein, be equipped with transmission block 61 in connecting the transmission portion, be equipped with the transmission spout 21 that suits with transmission block 61 shape on the 2 terminal surfaces of motor shaft. The transmission block 61 is always located in the transmission chute 21 during the axial movement of the clutch sleeve 6, so that the clutch sleeve 6 and the motor shaft 2 are always in a connection state to transmit power. A clutch block 62 is arranged in the clutch part, and a clutch chute 41 which is matched with the clutch block 62 in shape is arranged on the driving shaft 4. The clutch piece 62 is disengaged from the clutch gate 41 when the clutch sleeve 6 is moved to the limit position in the direction of the electric motor 1. When the clutch sleeve 6 moves to the extreme limit position towards the motor 1, the driving shaft 4 is disconnected with the motor shaft 2, and when the clutch sleeve 6 moves to the extreme limit position towards the driving gear 5, the driving shaft 4 is connected with the motor shaft 2 for transmission.

In a preferred embodiment, the transmission block 61 and the clutch block 62 have a cross-shape, and correspondingly, the transmission link 21 and the clutch link 41 have a cross-shape in cross section. So that the transmission block 61 and the clutch block 62 have sufficient strength to avoid breakage due to excessive transmission torque. In particular, the side surface of the clutch sliding groove 41 and the end surface of the driving shaft 4 are in arc curved surface transition. So that the clutch piece 62 can slide into the clutch slide groove 41 along the curved surface of the arc.

The specific structure of the electromagnetic switch 3 in this application is: the motor shaft control device comprises an assembly seat 31, a through hole 311 for the motor shaft 2 to pass through is formed in the assembly seat 31, and the control sleeve 32 is sleeved on the assembly seat 31. The bottom of the assembling seat 31 is provided with a first fixing hole 312, the motor 1 is provided with a second fixing hole 11, and the first fixing hole 312 and the second fixing hole 11 are assembled and connected through a fixing connecting piece 7, so that the assembling is simple and the matching is firm. The clutch sleeve 6 is provided with an assembly groove 63, the control sleeve 32 is provided with a rotary connecting piece 33, and the rotary connecting piece 33 is arranged in the assembly groove 63. So that the control sleeve 32 can drive the clutch sleeve 6 into an axial movement while avoiding a rotational movement of the clutch sleeve 6 to drive the control sleeve 32.

Preferably, the fixed connecting piece 7 can be a fastening hexagon bolt, and is simple to disassemble and assemble and firm in matching. The rotary connecting piece 33 can be a rolling bearing and can bear a certain axial load, so that the control sleeve 32 is prevented from being in direct contact with the assembling groove 63 and being abraded.

This application electromagnetic switch 3 controls control sleeve 32 through the mode of electro-magnet and spring collocation, and its structure specifically is: the assembling seat 31 is provided with an abutting flange 313, the abutting flange 313 is provided with a passive adsorption part 314, the control sleeve 32 is provided with a sleeving end 321, and one side of the sleeving end 321 opposite to the abutting flange 313 is provided with an active adsorption part 322 corresponding to the passive adsorption part 314. A return spring 34 is mounted between the abutment flange 313 and the socket end 321. The axial movement of the control sleeve 32 and thus the clutch switching of the clutch sleeve 6 is realized by controlling the electromagnetic switch 3.

In particular, the design has detection mechanism on this application, can detect clutch sleeve 6 and whether combine to target in place, and its structure specifically is: the motor shaft 2 is provided with a detection structure 22, and the detection structure 22 comprises a detection convex strip 221 and a detection groove 222 which are arranged at intervals. The end face of the assembling seat 31 is provided with a detection head 35 which is aligned with the detection structure 22. The clutch sliding groove 41 is twisted around the axial direction along the groove depth direction, and the twisting angle is 5-10 degrees. The clutch block 62 is engaged with the clutch chute 41 more tightly, and the design can be matched with the detection structure 22, so that the clutch sleeve 6 can deflect at a certain angle when the clutch block 62 enters the clutch chute 41 to drive the motor shaft 2 to deflect, and the detection head 35 detects whether the clutch sleeve 6 is combined in place through the deflection of the detection structure 22.

The working principle of this application does:

when the automobile is started, the control device firstly sends a signal to the electromagnetic switch 3, the active adsorption piece 322 is electrified and moves to the passive adsorption piece 314 to adsorb the active adsorption piece and the passive adsorption piece, and the control sleeve 32 moves towards the direction of the driving gear 5.

The clutch sleeve 6 is moved by the control sleeve 32 in the direction of the drive gear 5, during which the clutch plate 62 enters the clutch gate 41. Because the clutch sliding groove 41 is twisted around the axial direction along the groove depth direction, the clutch sleeve 6 drives the motor shaft 2 to deflect, the detection structure 22 deflects, the detection head 35 detects that the detection structure 22 deflects and sends a signal that the clutch sleeve 6 is combined in place to the control device, the control device sends a starting signal to the motor 1, the motor 1 is started, and the clutch sleeve 6 drives the driving gear 5 to rotate.

After the automobile is started, the electromagnetic switch 3 is turned off, the control sleeve 32 is reset under the action of the reset spring 34, and the clutch sleeve 6 is separated from the driving shaft 4.

Compared with the prior art, this application will be connected drive shaft 4 of drive gear 5 and motor shaft 2 separation setting of motor 1, let drive gear 5 and flywheel mesh all the time, through the torque transmission between clutch sleeve 6 control motor 1 and the drive gear 5, avoided milling the tooth phenomenon, reduced the noise to reduce because meshing, break away from the wearing and tearing that the switching leads to, improved the life of starter greatly.

The scope of the present invention includes, but is not limited to, the above embodiments, and the present invention is defined by the appended claims, and any alterations, modifications, and improvements that may occur to those skilled in the art are all within the scope of the present invention.

Claims

1. The improved starter is characterized by comprising a motor (1), an electromagnetic switch (3) and a driving shaft (4), wherein a driving gear (5) is arranged on the driving shaft (4);

the electromagnetic switch (3) is arranged on a motor shaft (2) of the motor (1); but electromagnetic switch (3) is including cup jointing on motor shaft (2) axial displacement's control sleeve (32), control sleeve (32) one end is connected with separation and reunion sleeve (6), separation and reunion sleeve (6) are including connecting transmission portion and separation and reunion portion, connecting transmission portion and motor shaft (2) and being connected, separation and reunion portion is connected with drive shaft (4).

2. The improved starter as claimed in claim 1, wherein a transmission block (61) is arranged in the connecting transmission part, and a transmission chute (21) which is matched with the transmission block (61) in shape is arranged on the end surface of the motor shaft (2); the transmission block (61) is always positioned in the transmission sliding groove (21) in the axial movement process of the clutch sleeve (6).

3. The improved starter as claimed in claim 2, wherein a clutch block (62) is arranged in the clutch portion, and a clutch runner (41) adapted to the shape of the clutch block (62) is arranged on the driving shaft (4); the clutch block (62) is disengaged from the clutch chute (41) when the clutch sleeve (6) moves to the limit position towards the motor (1).

4. The improved starter according to claim 3, wherein the transmission block (61) and the clutch block (62) are cruciform.

5. The improved starter as claimed in claim 4, wherein the side face of the clutch runner (41) is in curved transition with the end face of the drive shaft (4).

6. The improved starter according to claim 5, wherein the clutch runner (41) is twisted about an axial direction in a groove depth direction by an angle of 5 ° to 10 °.

7. The improved starter as claimed in claim 1, wherein the electromagnetic switch (3) comprises a mounting seat (31), a through hole (311) for the motor shaft (2) to pass through is formed in the mounting seat (31), and the control sleeve (32) is sleeved on the mounting seat (31); an abutting flange (313) is arranged on the assembling seat (31), a passive adsorption part (314) is arranged on the abutting flange (313), a sleeving end (321) is arranged on the control sleeve (32), and an active adsorption part (322) corresponding to the passive adsorption part (314) is arranged on one side, opposite to the abutting flange (313), of the sleeving end (321); and a return spring (34) is arranged between the abutting flange (313) and the socket end (321).

8. The improved starter as claimed in claim 7, wherein the motor shaft (2) is provided with a detection structure (22), the detection structure (22) comprises a detection rib (221) and a detection groove (222) which are arranged at intervals; and a detection head (35) aligned with the detection structure (22) is arranged on the end face of the assembly seat (31).

9. The improved starter as claimed in claim 8, wherein a first fixing hole (312) is formed in the bottom of the mounting seat (31), a second fixing hole (11) is formed in the motor (1), and the first fixing hole (312) and the second fixing hole (11) are assembled and connected through a fixing connecting piece (7).

10. The improved starter as claimed in claim 9, wherein the clutch sleeve (6) is provided with an assembly groove (63), the control sleeve (32) is provided with a rotary connecting piece (33), and the rotary connecting piece (33) is arranged in the assembly groove (63).