JP2010242741A - Starter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a starter 1 improving a mounting characteristic, by separately constituting a pinion pushing-out solenoid 7 for pushing out a pinion gear 5 in the axial direction and a relay 8 for carrying an electric current to a motor for opening-closing a main contact point arranged in a motor circuit, as a separate body. <P>SOLUTION: This starter 1 has the pinion pushing-out solenoid 7 for pushing out the pinion gear 5 in the anti-motor direction, and the relay 8 for carrying the electric current to the motor for opening-closing the main contact point of the motor circuit, and its both are separately constituted as the separate body, and are arranged in close vicinity in the axial direction (in the axial direction of the pinion pushing-out solenoid 7). With this constitution, even if the pinion-pushing out solenoid 7 and the relay 8 for carrying the electric current to the motor are separated as the separate body, a dimension is not increased in two directions on the outside in the radial direction of the motor 2. Since the length in the axial direction of putting both together does not exceed the total length of the motor 2, the mounting characteristic equal to a conventional starter having an electromagnetic switch, can be secured. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a starter including a pinion pushing solenoid that works to push out a pinion gear in an axial direction, and a motor energization relay that opens and closes a main contact provided in a motor circuit.

  In recent years, for the purpose of reducing carbon dioxide and improving fuel efficiency, it is predicted that the number of vehicles equipped with an automatic engine stop / restart device (hereinafter referred to as an idle stop device) that automatically controls engine stop and restart will increase. ing. This idle stop device cuts off the fuel supply to the engine and automatically stops the engine when the vehicle is stopped (idling state) or when a predetermined stop condition is satisfied during deceleration. This is a system that automatically starts the starter and restarts the engine when a starting operation is satisfied by starting operation (for example, releasing the brake, shifting to the drive range, etc.).

  This idle stop device has many opportunities to automatically stop the engine on the road, such as when stopping at traffic lights at intersections or when it stops temporarily due to traffic jams. And it is required to restart the engine reliably. Therefore, as a starter, it has become necessary to separate the function for pushing out the pinion gear from the function for turning on / off the energization current of the motor. As a prior art capable of realizing this, there is a starter described in Patent Document 1. This starter includes a pinion push-out solenoid that generates a driving force (electromagnetic attraction force) for pushing the pinion gear toward the ring gear via a shift lever, and a motor energization relay that opens and closes the main contact of the motor circuit. It is prepared and separated from each other.

Japanese Utility Model Publication No. 56-42437

By the way, the position where the starter is mounted in the engine room is usually a part close to the side of the engine, but in many cases, there are functional parts around the engine that have a high priority for engine performance including the intake pipe. Is arranged. For this reason, starters used only for starting the engine are often greatly limited by the outer diameter, and in order to ensure the market competitiveness of the product itself, it is important to improve mountability by downsizing. .
However, in the starter described in Patent Literature 1, a pinion pushing solenoid and a motor energizing relay are arranged in parallel in the circumferential direction of the motor. That is, the pinion pushing solenoid and the motor energizing relay are arranged at different positions in the circumferential direction of the motor.

In the above configuration, since the dimensions increase in two directions on the outer side in the radial direction of the motor, it is difficult to avoid interference with the functional components arranged in the vicinity of the engine. Cause the disadvantages.
The present invention has been made based on the above circumstances, and its purpose is to provide a pinion push-out solenoid that works to push out the pinion gear in the axial direction, and a motor energization relay that opens and closes a main contact provided in the motor circuit. It is to provide a starter that can be separately configured and improved in mountability.

(Invention of Claim 1)
The present invention is a starter that pushes a pinion gear in an axial direction to mesh with an engine ring gear, transmits a rotational force generated in the motor to the pinion gear, and drives the ring gear to start the engine. A pinion extruding solenoid for extruding the motor and a motor energizing relay for opening and closing a main contact provided in the motor circuit, the pinion extruding solenoid and the motor energizing relay are separated and configured separately, In addition, a motor energizing relay is arranged on the axial direction of the pinion pushing solenoid.

In the starter of the present invention, the motor energizing relay is arranged on the axial direction of the pinion push-out solenoid, so that the dimension does not increase in two directions on the outer side in the radial direction of the motor. Thereby, compared with the starter of Patent Document 1 in which the pinion pushing solenoid and the motor energizing relay are arranged at different positions in the circumferential direction of the motor, the dimensional constraints on the mounting surface can be reduced, so that the mounting property is improved. improves. In other words, it is possible to secure the same mountability as a conventional starter that pushes the pinion gear and opens and closes the main contact of the motor circuit with one electromagnetic switch.
The “axial direction of the pinion push-out solenoid” is a movement direction of the plunger built in the pinion push-out solenoid, and a motor energization relay is arranged on an extension line of the movement direction.

Further, in a vehicle equipped with an idle stop device, the number of times the starter is used increases significantly, so that wear of the main contact may progress and replacement may be necessary. In contrast, in the starter of the present invention, the pinion push-out solenoid and the motor energization relay are separated and configured separately, so that the motor energization is required when the main contact is worn and needs to be replaced. It is only necessary to replace the relay, and it is not necessary to replace the pinion pushing solenoid, so the running cost can be reduced.
Furthermore, even if the pinion push-out solenoid and the motor energizing relay are separated and configured separately, many of the parts used in the conventional electromagnetic switch can be used. Therefore, the cost can be reduced.

(Invention of Claim 2)
The starter described in claim 1 is characterized in that the motor energization relay is arranged at a position overlapping the motor in the axial direction.
In the invention according to claim 2, it is not always necessary that the entire motor energizing relay (total length in the axial direction) overlaps the motor in the axial direction, and at least a part of the motor energizing relay overlaps the motor. Including the case of wrapping.
In this configuration, the motor energization relay can be arranged at an appropriate position within a range overlapping with the motor in consideration of handling of the electric wiring connected to the motor energization relay.

(Invention of Claim 3)
The starter described in claim 1 or 2 is characterized in that the motor energization relay is arranged in front of the axial direction from the rear end of the motor on the side opposite to the pinion gear in the axial direction. In the invention according to claim 3, since the motor energizing relay does not protrude rearward in the axial direction from the rear end of the motor, the axial dimension of the entire starter is not increased, and the starter mounting property is improved. .

(Invention of Claim 4)
The starter according to any one of claims 1 to 3,
The motor energizing relay is arranged in a state in which the motor energizing relay is in contact with the pinion pushing solenoid in the axial direction.
In the invention according to claim 4, even if the pinion pushing solenoid and the motor energizing relay are separated, the pinion pushing solenoid and the motor energizing relay are arranged by contacting both in the axial direction. The length in the axial direction can be suppressed.
As a result, it is possible to ensure the same mountability as a conventional starter in which the function of pushing out the pinion gear and the function of opening and closing the main contact of the motor circuit are performed by one electromagnetic switch.

(Invention of Claim 5)
The starter described in claim 1 is characterized in that the motor energization relay is disposed rearward in the axial direction from the rear end of the motor on the side opposite to the pinion gear in the axial direction.
In the invention according to claim 5, for example, the electrical wiring (cable for supplying power, the conducting wire for energizing the relay coil) connected to the motor energizing relay is disposed on the rear side of the starter. In this case, by arranging the motor energization relay behind the rear end of the motor in the axial direction, there is an effect that the connection with the electric wiring can be facilitated.
In addition, even if the motor energization relay is mounted on the rear side in the axial direction from the rear end of the motor, as long as it is on the axial direction of the pinion push-out solenoid, the dimensions are two directions outside the motor in the radial direction. Since it does not increase, compared with the starter of Patent Document 1, there is no great restriction on the mounting surface.

(Invention of Claim 6)
The starter according to any one of claims 1 to 5, wherein the motor energizing relay is arranged such that the moving direction of the built-in movable iron core is the same as the axial direction of the pinion pushing solenoid. .
According to this configuration, the two terminal bolts provided on the motor energizing relay (the B terminal bolt to which the battery cable is connected and the M terminal bolt to which the motor lead wire is connected) are arranged in the same direction as the conventional electromagnetic switch. Therefore, it is not necessary to change the handling of the battery cable and the motor lead wire.

(Invention of Claim 7)
The starter according to any one of claims 1 to 5, wherein the motor energizing relay is arranged such that a moving direction of a built-in movable iron core is arranged in a direction orthogonal to an axial direction of a pinion pushing solenoid. To do.
According to this configuration, two terminal bolts (B terminal bolt to which the battery cable is connected and M terminal bolt to which the motor lead wire is connected) provided in the motor energizing relay are provided in the conventional electromagnetic switch. Since it can take out in the direction orthogonal to two terminal bolts, the connection direction of the battery cable with respect to a B terminal bolt can be changed, for example.

(Invention of Claim 8)
The starter housing according to any one of claims 1 to 7, wherein the pinion pushing solenoid is fixed in parallel to the motor relative to the starter housing, and the motor energizing relay is provided with a mounting bracket on a base provided on the end frame of the motor. It is characterized by being fixed via.
The pinion pushing solenoid can be fixed to the starter housing in parallel with the motor in the same manner as a conventional starter that pushes the pinion gear and opens and closes the main contact of the motor circuit with a single electromagnetic switch. Further, the motor energization relay can be fixed to the pedestal via a mounting bracket by providing a pedestal integrally with the end frame of the motor. For example, the mounting bracket is fixed to the case of the motor energizing relay by spot welding or the like, and can be fixed to the base by bolting or the like.

(Invention of Claim 9)
The starter housing is fixed in parallel to the motor with respect to the starter housing, and the motor energizing relay is attached to a base attached to the yoke of the motor via a mounting bracket. It is characterized by being fixed.
The pinion pushing solenoid can be fixed to the starter housing in parallel with the motor in the same manner as a conventional starter that pushes the pinion gear and opens and closes the main contact of the motor circuit with a single electromagnetic switch. The motor energization relay can be fixed to a pedestal attached to the motor yoke via a fitting. For example, the mounting bracket is fixed to the case of the motor energizing relay by spot welding or the like, and can be fixed to the base by bolting or the like.

(Example 1) which is a side view of a starter. (Example 1) which is the axial rear view of the starter seen from the motor side. It is an electric circuit diagram of a starter. (Example 2) which is a side view of a starter. (Example 2) which is the axial rear view of the starter seen from the motor side. (Example 3) which is a side view of a starter. (Example 4) which is a side view of a starter.

  The best mode for carrying out the present invention will be described in detail by the following examples.

Example 1
The starter 1 shown in the first embodiment automatically stops the engine when, for example, the signal stops at an intersection or when the vehicle is temporarily stopped due to traffic congestion, and then the engine is automatically restarted in response to a start operation by the user. Used in vehicles equipped with an idle stop device.
As shown in FIG. 1, the starter 1 includes a motor 2 that generates a rotational force, an output shaft 3 that rotates when the rotational force of the motor 2 is transmitted, and a clutch 4 (see FIG. 3) on the outer periphery of the output shaft 3. A pinion gear 5 disposed integrally with the pinion gear 5, a pinion pushing solenoid 7 for pushing the clutch 4 and the pinion gear 5 in the counter-motor direction (left direction in FIG. 1) via the shift lever 6 (see FIG. 3), A motor energization relay 8 for opening and closing a main contact (described later) provided in an energization circuit (referred to as a motor circuit) of the motor 2 is configured. A reduction gear (for example, a planetary gear reducer) that reduces the rotation of the motor 2 and transmits it to the output shaft 3 can be provided between the motor 2 and the output shaft 3.

Hereinafter, the configuration of the pinion pushing solenoid 7 and the motor energizing relay 8 will be described.
Other devices and components (motor 2, output shaft 3, clutch 4, pinion gear 5, shift lever 6, reduction gear, etc.) excluding pinion pushing solenoid 7 and motor energizing relay 8 push out pinion gear 5. The function and the function of opening and closing the main contact are the same as those of a conventional starter that uses a single electromagnetic switch, and the description thereof is omitted.
a) Configuration of Pinion Extrusion Solenoid 7 The pinion extrusion solenoid 7 includes a solenoid case 9, an excitation coil 11 wound around a resin bobbin 10 and housed in the solenoid case 9, and the excitation coil 11. From a fixed iron core 12 that is magnetized by the energization, a plunger 13 that moves the inner periphery of the exciting coil 11 in the axial direction (left-right direction in FIG. 1), and a joint 14 that transmits the movement of the plunger 13 to the shift lever 6. Composed.

The solenoid case 9 has a cylindrical yoke portion covering the outer periphery of the exciting coil 11 and a case bottom portion provided on one axial end side of the cylindrical yoke portion. The bobbin 10 is provided at the radial center portion of the case bottom portion. A round hole having the same diameter as the inner diameter is opened. A cylindrical sleeve 15 that guides the movement of the plunger 13 is inserted from the inner periphery of the round hole to the inner periphery of the bobbin 10.
As shown in FIG. 3, the exciting coil 11 has one end connected to the connector terminal 16 and the other end electrically connected to the surface of the fixed iron core 12 and grounded. Electrical wiring connected to the starter relay 17 is connected to the connector terminal 16.
The starter relay 17 is on / off controlled by an electronic control device (hereinafter referred to as an ECU 18) that controls the operation of the idle stop device. When the starter relay 17 is on-controlled by the ECU 18, the battery 19 passes through the starter relay 17. The excitation coil 11 is energized.

The fixed iron core 12 is composed of a circular plate portion 12a that seals the opening of the solenoid case 9, and an annular core portion 12b that protrudes from the plate portion 12a toward the inner peripheral side of the bobbin 10, and has a plate thickness of the plate portion 12a. The outer peripheral end of the coil side in the direction is in contact with the step provided on the inner periphery of the opening of the solenoid case 9, the position on the coil side is regulated, and the thin part provided in the opening of the solenoid case 9 is overtightened The solenoid case 9 is fixed.
The plunger 13 is provided in a substantially cylindrical shape having a cylindrical hole in the central portion in the radial direction. The cylindrical hole opens on one end side in the axial direction of the plunger 13 and has a bottom surface on the other end side in the axial direction. When the fixed iron core 12 is magnetized by energizing the exciting coil 11, the plunger 13 is attracted to the core 12b by the magnetic force acting between the plunger 13 and the energizing to the exciting coil 11 is stopped. When it disappears, it is pushed back by the reaction force of the return spring 20 toward the anti-core portion (left direction in FIG. 1).
The return spring 20 is disposed along the inner periphery of the sleeve 15, one end is supported by a step formed on the outer periphery of the plunger 13, and the other end is supported by a step formed on the outer periphery of the core portion 12b. .

The joint 14 is inserted into the cylindrical hole of the plunger 13 together with the drive spring 21. The joint 14 is provided in a rod shape, and an engagement groove 14a that engages with an end portion of the shift lever 6 is formed on one end side thereof, and a flange portion 14b is provided on an end portion on the other end side. The flange portion 14b has an outer diameter that is slidable on the inner periphery of the cylindrical hole, and is pressed against the bottom surface of the cylindrical hole under the load of the drive spring 21.
The drive spring 21 is disposed on the outer periphery of the joint 14, one end in the axial direction is supported by a spring receiving portion 22 fixed to the opening end portion of the plunger 13, and the other end in the axial direction is supported by the flange portion 14 b of the joint 14. It is supported. The drive spring 21 moves the plunger 13 after the end surface of the pinion gear 5 pushed out in the counter-motor direction via the shift lever 6 contacts the end surface of the ring gear 23 (see FIG. 3). It is compressed while moving until it is attracted to 12b, and stores a reaction force for causing the pinion gear 5 to be engaged with the ring gear 23.

b) Configuration of Motor Energizing Relay 8 The motor energizing relay 8 includes a cup-shaped relay case 24 having a bottom surface, and a relay coil 26 wound around a resin bobbin 25 and accommodated inside the relay case 24. A magnetic plate 27 disposed on the opposite bottom surface side of the relay case 24 with respect to the relay coil 26; a fixed iron core 28 disposed in contact with the bottom surface of the relay case 24 on the inner peripheral side of the relay coil 26; A movable iron core 29 that moves in the axial direction (left and right direction in FIG. 1) of the relay coil 26 facing the fixed iron core 28, a resin contact cover 30 that is attached to the relay case 24, and is fixed to the contact cover 30. Electrical connection between the two terminal bolts 31 and 32, a set of fixed contacts 33 provided on the two terminal bolts 31 and 32, and the set of fixed contacts 33. The movable contact 34 and the like are configured.

As shown in FIG. 3, the relay coil 26 has one end connected to the external terminal 35 and the other end connected to the ground. As shown in FIG. 2, the external terminal 35 protrudes from the end face of the contact cover 30 to the outside, and is connected to an electrical wiring that leads to the ECU 18.
The magnetic plate 27 has a circular hole in the central portion in the radial direction, and is formed in an annular shape so that the movable iron core 29 can move in the axial direction on the inner periphery of the circular hole. The magnetic plate 27 is made of a ferromagnetic material such as iron, and forms a magnetic path between the relay case 24 and the movable iron core 29.
The fixed iron core 28 is a ferromagnetic material such as iron, like the magnetic plate 27, and is magnetized by energizing the relay coil 26.

When the fixed iron core 28 is magnetized by energization of the relay coil 26, the movable iron core 29 is attracted to the fixed iron core 28 by the magnetic force acting between the movable iron core 28 and the energization of the relay coil 26 is stopped and the magnetic force is generated. When it disappears, it is pushed back in the direction of the anti-fixed iron core (right direction in FIG. 1) by the reaction force of the return spring 36 disposed between the fixed iron core 28.
The contact cover 30 has a cylindrical leg portion, and the leg portion is inserted into the opening of the relay case 24 so that the axial end surface of the leg portion is in contact with the surface of the magnetic plate 27. The relay case 24 is overtightened and fixed.
The two terminal bolts 31 and 32 are a B terminal bolt 31 to which a battery cable 37 (see FIG. 3) is connected and an M terminal bolt 32 to which a motor lead wire 38 is connected.
The set of fixed contacts 33 is provided integrally with the two terminal bolts 31 and 32 inside the contact cover 30 (can be separated).

The movable contact 34 is disposed on the anti-movable iron core side with respect to the set of fixed contacts 33, and is pressed against the end face of the rod 39 fixed to the movable iron core 29 under the load of the contact pressure spring 40. However, since the initial load of the return spring 36 is set larger than the initial load of the contact pressure spring 40, the movable contact 34 pushes the contact pressure spring 40 by the load of the return spring 36 when the relay coil 26 is not energized. It is seated on the inner seat surface of the contact cover 30 in a contracted state (see FIG. 1).
The main contact is formed by a set of fixed contacts 33 and a movable contact 34, and the movable contact 34 abuts on the set of fixed contacts 33 and is urged by the contact pressure spring 40. The main contact is closed by conducting between the two fixed contacts 33 via the, and the movable contact 34 is separated from the set of fixed contacts 33, and the conduction between the two fixed contacts 33 is cut off. Open state.

The pinion push-out solenoid 7 and the motor energization relay 8 described above are provided separately as their functions are separated as shown in FIG. Further, a motor energizing relay 8 is disposed on the axial direction of the pinion pushing solenoid 7, and the motor energizing relay 8 has a moving direction of a built-in movable iron core 29 in the axial direction of the pinion pushing solenoid 7 ( The direction of movement of the plunger 13) is the same.
Further, the pinion push-out solenoid 7 and the motor energization relay 8 are arranged close to each other with a slight gap in the axial direction. Alternatively, it is possible to arrange the solenoid case 9 and the relay case 24 in contact with each other in the axial direction without a gap between them.

As shown in FIG. 1, the pinion pushing solenoid 7 is fixed to the starter housing 41 in parallel with the motor 2, and the motor energizing relay 8 is fixed to a relay case 24 (see FIG. 2). And is fixed to a pedestal 44 provided on the end frame 43 of the motor 2.
The mounting bracket 42 is fixed to the relay case 24 by spot welding, for example. On the other hand, the pedestal 44 can be provided integrally with the end frame 43 by die casting, for example, and is formed to extend from the end frame 43 to the yoke side in the axial direction as shown in FIG. 42 is fastened by bolts 45 and fixed.

Next, the operation of the ECU 18 related to idle stop control will be described.
When the stop condition for automatically stopping the engine (for example, the vehicle speed is zero and the brake pedal is stepped on) is established, the ECU 18 cuts off the fuel supply and intake air supply to the engine. After that, when a restart condition for restarting the engine (for example, release of the brake, shift operation to the drive range, etc.) is satisfied, the starter 1 is automatically activated to restart the engine. At the start of the starter 1, the timing of energizing the relay coil 26 of the motor energizing relay 8 (hereinafter referred to as the first energizing timing) from the timing of energizing the exciting coil 11 of the pinion pushing solenoid 7 (hereinafter referred to as the first energizing timing). A predetermined delay time is set between the first energization timing and the second energization timing so that the second energization timing is delayed.

Next, the operation of the starter 1 will be described.
When the user starts the engine by turning on the IG switch (not shown) while the engine is completely stopped (during normal engine start), it receives an on signal generated by turning on the IG switch. The ECU 18 controls the starter relay 17 to close.
When the engine is restarted after the idle stop, the starter relay 17 is closed by the ECU 18 when the restart condition is satisfied.
When the starter relay 17 is closed, the excitation coil 11 is energized from the battery 19 through the starter relay 17, whereby the plunger 13 is attracted and moved by the magnetized core portion 12b. As the plunger 13 moves, the pinion gear 5 is pushed in the opposite direction of the motor integrally with the clutch 4 via the shift lever 6 and stops in a state where the end surface of the pinion gear 5 is in contact with the end surface of the ring gear 23.

  An ON signal is output from the ECU 18 and the relay coil 26 is energized when a preset delay time has elapsed after energization of the excitation coil 11. When the movable iron core 29 is attracted to the fixed iron core 28 by energizing the relay coil 26, the movable contact 34 abuts against the set of fixed contacts 33 and is urged by the contact pressure spring 40, so that the main contact is Close. As a result, the motor 19 is energized from the battery 19 to generate a rotational force, and the rotational force is transmitted to the output shaft 3. When the rotation of the output shaft 3 is received and the pinion gear 5 is rotated to a position where it can mesh with the ring gear 23, the reaction force stored in the drive spring 21 is received and the pinion gear 5 meshes with the ring gear 23. Torque is transmitted to crank the engine.

(Effect of Example 1)
The starter 1 of the present embodiment is arranged by placing the pinion pushing solenoid 7 and the motor energizing relay 8 close to or in contact with each other in the axial direction (axial direction of the pinion pushing solenoid 7). The dimension does not increase in two directions on the radially outer side of the motor 2. As a result, the starter described in Patent Document 1, that is, the pinion pushing solenoid 7 and the motor energizing relay 8 are arranged in parallel in the circumferential direction of the motor 2, so that Compared with a starter whose dimensions increase in the direction, the dimensional constraints on the mounting surface can be reduced, so that the mountability is improved. Further, as shown in FIG. 1, since the axial length of the pinion pushing solenoid 7 and the motor energizing relay 8 does not exceed the total length of the motor 2, the function of pushing out the pinion gear 5, and the motor circuit It is possible to secure the same mountability as a conventional starter that uses a single electromagnetic switch to open and close the main contacts.

Further, in a vehicle equipped with an idle stop device, the number of times the starter 1 is used increases significantly, so that the wear of the main contact (the fixed contact 33 and the movable contact 34) may progress and may need to be replaced. In contrast, in the starter 1 of this embodiment, the pinion push-out solenoid 7 and the motor energization relay 8 are separated and provided separately, so that the main contact is worn and needs to be replaced. Only the motor energizing relay 8 needs to be replaced, and it is not necessary to replace the pinion pushing solenoid 7, so that the running cost can be reduced.
Furthermore, even if the pinion pushing solenoid 7 and the motor energizing relay 8 are separated and provided separately, many parts used in the conventional electromagnetic switch (for example, the plunger 13, the joint 14, the sleeve 15, the return) The spring 20, the drive spring 21, the bobbin 10 for winding, etc.) can be used, and since a general-purpose electromagnetic relay can be used as the motor energizing relay 8, the cost can be reduced.

Further, the pinion pushing solenoid 7 and the motor energizing relay 8 are separated and configured separately, so that the first energizing timing for energizing the exciting coil 11 of the pinion pushing solenoid 7 and the motor energizing relay are provided. The second energization timing for energizing the eight relay coils 26 can be arbitrarily set.
That is, as described in the first embodiment, by setting a predetermined delay time between the first energization timing and the second energization timing, for example, fuel cut and intake cut to the engine can be performed due to an idle stop. When the restart condition is satisfied before the rotation of the engine is completely stopped after being performed, the ring gear 23 is energized by pushing the pinion gear 5 by energizing the excitation coil 11 when the ring gear 23 is rotating. When the pinion gear 5 rotates to a position where it can mesh with the pinion gear 5, the meshing of both the gears 5, 23 is established. After the engagement of the pinion gear 5 and the ring gear 23 is established, the engine can be restarted promptly by energizing the relay coil 26 and closing the main contact.

(Example 2)
As shown in FIGS. 4 and 5, in the starter 1 according to the second embodiment, a pedestal 44 is provided on the yoke 46 of the motor 2, and the motor energizing relay 8 is fixed to the pedestal 44 via the mounting bracket 42. It is an example.
The pedestal 44 is fixed to the outer peripheral surface of the yoke 46 by spot welding, for example.
As described in the first embodiment, for example, when the pedestal 44 is provided integrally with the end frame 43 by die casting, the existing end frame 43 cannot be used. However, in this embodiment, the yoke 46 and the pedestal 44 are separated. Since the pedestal 44 only needs to be retrofitted to the existing yoke 46, the cost can be kept lower than when the pedestal 44 is provided integrally with the end frame 43.

Example 3
The starter 1 according to the third embodiment is an example in which the installation direction of the motor energizing relay 8 is different from the first and second embodiments. That is, as shown in FIG. 6, the motor energizing relay 8 is arranged such that its axial direction (moving direction of the movable iron core 29) is orthogonal to the axial direction of the pinion pushing solenoid 7.
The pinion push-out solenoid 7 serves to push the pinion gear 5 in the axial direction (counter-motor direction) via the shift lever 6 (see FIG. 3). The motor energizing relay 8 is not particularly restricted in the operation of the starter 1 in determining the installation direction (it is not subject to restrictions). Therefore, as shown in FIG. The axial direction of the motor energizing relay 8 can also be arranged in a direction orthogonal to the axial direction of the pinion pushing solenoid 7.

However, in the third embodiment, the motor energizing relay 8 is arranged close to the axial direction of the pinion push-out solenoid 7 except that the arrangement direction of the motor energizing relay 8 is different from the first and second embodiments. Are the same. That is, the dimension does not increase in two directions outside the motor 2 in the radial direction.
According to said structure, since the B terminal volt | bolt 31 can be taken out in the figure upper direction, the connection direction of the battery cable 37 with respect to the B terminal volt | bolt 31 can be changed. The motor energizing relay 8 can be attached to a pedestal 44 provided on the end frame 43 of the motor 2 via an attachment fitting 42 as in the first embodiment. Alternatively, similarly to the second embodiment, a pedestal 44 can be attached to the yoke 46 of the motor 2 and can be fixed to the pedestal via an attachment fitting 42.

Example 4
In the starter 1 according to the fourth embodiment, as shown in FIG. 7, the motor energizing relay 8 is disposed behind the rear end of the motor 2 (the rear end of the end frame 43) and fixed to the relay case 24. It is fixed to a pedestal 44 provided on the end frame 43 of the motor 2 via a metal fitting 42.
The motor energizing relay 8 is arranged on the axial direction of the pinion pushing solenoid 7, and the moving direction of the built-in movable iron core 29 is the axial direction of the pinion pushing solenoid 7 (moving direction of the plunger 13). They are arranged in the same direction.

In the configuration shown in the fourth embodiment, the battery cable 37 connected to the B terminal bolt 31 provided in the motor energizing relay 8 and the energizing line connected to the external terminal 35 shown in FIG. When the motor energizing relay 8 is disposed axially rearward from the rear end of the motor 2 when it is disposed on the right side of FIG. Can be easily done.
Even if the motor energizing relay 8 is mounted on the rear side in the axial direction from the rear end of the motor 2 as long as it is on the axial direction of the pinion push-out solenoid 7, the motor energizing relay 8 is located on the outer side in the radial direction of the motor 2. Since the dimension does not increase in the direction, the mounting surface is not greatly restricted as compared with the starter of Patent Document 1.

7 shows an example in which the motor energizing relay 8 is fixed to a pedestal 44 provided on the end frame 43 of the motor 2, but the pedestal provided on the yoke 46 of the motor 2 is extended to the rear of the motor 2. Then, the motor energizing relay 8 may be fixed to the pedestal.
Further, in the motor energizing relay 8 shown in the fourth embodiment, the moving direction of the built-in movable iron core 29 is arranged in the same direction as the axial direction of the pinion pushing solenoid 7 (moving direction of the plunger 13). As in the case of the third embodiment, the moving direction of the movable iron core 29 can be arranged in a direction orthogonal to the axial direction of the pinion pushing solenoid 7.

1 Starter 2 Motor 5 Pinion Gear 7 Pinion Pushing Solenoid 8 Motor Energizing Relay 23 Ring Gear 29 Movable Core of Motor Energizing Relay 33 Fixed Contact (Main Contact)
34 Movable contact (main contact)
41 Starter housing 42 Mounting bracket 43 Motor end frame 44 Base 46 Motor yoke

Claims (9)

A starter that pushes the pinion gear in the axial direction and meshes with the ring gear of the engine, transmits the rotational force generated in the motor to the pinion gear, and drives the ring gear to start the engine,
A pinion extrusion solenoid for extruding the pinion gear in the axial direction;
A motor energizing relay for opening and closing a main contact provided in the motor circuit,
A starter characterized in that the pinion pushing solenoid and the motor energizing relay are separated and configured separately, and the motor energizing relay is arranged in the axial direction of the pinion pushing solenoid. The starter according to claim 1,
The starter characterized in that the motor energization relay is arranged at a position overlapping the motor in the axial direction. The starter according to claim 1 or 2,
The starter characterized in that the motor energization relay is disposed in front of the rear end of the motor on the side opposite to the pinion gear in the axial direction. The starter according to any one of claims 1 to 3,
The starter characterized in that the motor energization relay is arranged in a state of being in axial contact with the pinion pushing solenoid. The starter according to claim 1,
The starter characterized in that the motor energization relay is disposed rearward in the axial direction from the rear end of the motor on the side opposite to the pinion gear in the axial direction. In any starter according to claims 1-5,
The motor energization relay has a starter characterized in that a moving direction of a built-in movable iron core is arranged in the same direction as the axial direction of the pinion pushing solenoid. In any starter according to claims 1-5,
The motor energizing relay has a starter characterized in that a moving direction of a built-in movable iron core is arranged in a direction perpendicular to the axial direction of the pinion pushing solenoid. The starter according to any one of claims 1 to 7,
The pinion pushing solenoid is fixed in parallel to the motor with respect to the starter housing, and the motor energizing relay is fixed to a pedestal provided on an end frame of the motor via a mounting bracket. Starter to do. The starter according to any one of claims 1 to 7,
The pinion pushing solenoid is fixed in parallel to the motor with respect to the starter housing, and the motor energizing relay is fixed to a pedestal attached to a yoke of the motor via a mounting bracket. Starter.

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