CN217926131U

CN217926131U - Electromagnetic switch for starter

Info

Publication number: CN217926131U
Application number: CN202222177619.2U
Authority: CN
Inventors: 金介磊; 王宏伟; 刘世民; 钱汇润
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: 2022-11-29
Anticipated expiration: 2032-08-18

Abstract

A electromagnetic switch for in starter, electromagnetic switch installs on the motor, electromagnetic switch includes control sleeve and assembly seat, be equipped with the through-hole that the motor shaft that supplies the motor passes through in the assembly seat, control sleeve cup joints on the assembly 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. Compared with the prior art, the method has the following beneficial effects: the starter is simple in structure, is axially assembled with the starter, reduces the radial assembling area of the starter, has a detection function, and prevents the motor from being started when the electromagnetic switch breaks down, so that the parts of the starter are prevented from being damaged due to forced starting.

Description

Electromagnetic switch for starter

Technical Field

The utility model belongs to the technical field of automobile starter, concretely relates to an electromagnetic switch for in starter.

Background

The automobile starter is a key component of an automobile starting system and mainly comprises a transmission mechanism, a motor, an electromagnetic switch, a driving gear and other component assemblies. 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. The electromagnetic switch is one of the key parts of the automobile starter and has the function of pushing a control driving gear to a flywheel of the engine for meshing by connecting a transmission piece such as a shifting fork.

The existing electromagnetic switch is composed of an iron shell, an attraction coil, a holding coil, a stop iron, a movable iron core, a return spring, a push rod and other components, and has more components and higher cost. And it acts on drive gear mainly through driving medium such as shift fork, so generally set up in motor one side through the fitting part, make the radial assembly area of starter great like this. Meanwhile, the existing electromagnetic switch generally only has a switching function, most of the existing starters are forced-meshing starters, when the electromagnetic switch pushes the driving gear to move forwards, and the driving gear and the flywheel have a tooth ejecting phenomenon, the motor is started as usual, a tooth milling fault is easily generated, the flywheel can be damaged, and meanwhile, the generated vibration can also influence the motor and the electromagnetic switch.

The present application is therefore further designed and improved upon in view of some of the above circumstances in the prior art.

SUMMERY OF THE UTILITY MODEL

To not enough among the above prior art, the utility model provides an electromagnetic switch for in starter, with the assembly of starter axial, reduced the radial assembly area of starter to possess the detection function, when electromagnetic switch broke down, the motor can not start, prevented that the starter part from damaging because of forcing the start.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve.

A electromagnetic switch for in starter, electromagnetic switch installs on the motor, electromagnetic switch includes control sleeve and assembly seat, be equipped with the through-hole that the motor shaft that supplies the motor passes through in the assembly seat, control sleeve cup joints on the assembly 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 can be realized by controlling the electromagnetic switch, and the switch function can be realized by connecting the control sleeve with a transmission mechanism of the starter.

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 seat. The detection head can detect whether the motor shaft deflects through the detection 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.

Compared with the prior art, the method has the following beneficial effects: the electromagnetic switch used in the starter is simple in structure, is axially assembled with the starter, reduces the radial assembly area of the starter, has a detection function, and prevents the motor from being started when the electromagnetic switch fails, so that the starter component is prevented from being damaged due to forced starting.

Drawings

Fig. 1 is a perspective view of a starter in an embodiment.

Fig. 2 is a schematic structural diagram of a transmission part of the starter in the embodiment.

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 the reference signs in the drawings of the specification:

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 a 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 are exemplary only for explaining the present invention and are not construed as limiting the present invention, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

In the description of the present invention, it is to be understood that the term: the center, vertically, transversely, length, width, thickness, upper and lower, preceding, back, left and right, vertical, level, top, end, inside and outside, clockwise, anticlockwise etc. indicate position or positional relationship for based on the position or positional relationship that the drawing shows, just for the convenience of description the utility model discloses and simplified description, consequently can not be understood as the restriction of the utility model. 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 the description of the present invention, unless explicitly stated or limited otherwise, the terms: mounting, connecting, etc. should be understood broadly, and those skilled in the art will understand the specific meaning of the terms in this application as they pertain to the particular situation.

Referring to fig. 1 to 8, the novel 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 a 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 connection transmission of the motor shaft 2 and the driving shaft 4 is controlled through the clutch sleeve 6, 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 connected 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 block 62 can slide into the clutch chute 41 along the curved surface of the arc.

The specific structure of the electromagnetic switch 3 in this application is: the motor control device comprises an assembly seat 31, wherein 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 to move axially, 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 member 33 may be a rolling bearing capable of bearing a certain axial load, and preventing the control sleeve 32 from being in direct contact with the assembling groove 63 to cause abrasion.

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 a butt flange 313, the butt 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 butt 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 whether clutch sleeve 6 combines 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 the starter is as follows:

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 piece 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 closed, 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, the driving shaft 4 connected with the driving gear 5 and the motor shaft 2 of the motor 1 are arranged in a separated mode, the driving gear 5 is meshed with the flywheel all the time, the torque transmission between the motor 1 and the driving gear 5 is controlled through the clutch sleeve 6, 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.

The protection scope of the present invention includes but is not limited to the above embodiments, the protection scope of the present invention is subject to the claims, and any replacement, deformation, and improvement that can be easily conceived by those skilled in the art made by the present technology all fall into the protection scope of the present invention.

Claims

1. The electromagnetic switch is used in a starter, the electromagnetic switch (3) is arranged on a motor (1), and the electromagnetic switch is characterized by comprising a control sleeve (32) and an assembling seat (31), wherein a through hole (311) for a motor shaft (2) of the motor (1) to pass through is arranged in the assembling seat (31), and the control sleeve (32) is sleeved on the assembling seat (31);

an abutting flange (313) is arranged on the assembling seat (31), a passive adsorption piece (314) is arranged on the abutting flange (313), a sleeving end (321) is arranged on the control sleeve (32), and an active adsorption piece (322) corresponding to the passive adsorption piece (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).

2. The electromagnetic switch for use in a starter according to claim 1, wherein the motor shaft (2) is provided with a detection structure (22), and the detection structure (22) includes 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).

3. The electromagnetic switch for a starter as claimed in claim 2, wherein the mounting seat (31) is provided with a first fixing hole (312) at a bottom thereof, the motor (1) is provided with a second fixing hole (11), and the first fixing hole (312) and the second fixing hole (11) are connected by a fixing connecting piece (7) in an assembling manner.