CN109306931B

CN109306931B - Middle cover of starter and starter comprising same

Info

Publication number: CN109306931B
Application number: CN201710617530.4A
Authority: CN
Inventors: 胡立斌; 范福军; 张卫; 付涛
Original assignee: Prestolite Electric Beijing Ltd
Current assignee: Prestolite Electric Beijing Ltd
Priority date: 2017-07-26
Filing date: 2017-07-26
Publication date: 2024-02-20
Anticipated expiration: 2037-07-26
Also published as: CN109306931A

Abstract

The invention discloses a starter middle cover and a starter comprising the same, wherein the starter comprises a driving end cover, a shield, an electromagnetic switch and a relay, the starter middle cover and the electromagnetic switch are connected to the driving end cover, and the starter middle cover comprises: the middle cover body is connected to the driving end cover; the relay mount is provided along the outer circumferential surface of the middle cap body to protrude, and includes a relay mounting hole. The relay mounting tables are two, and the two relay mounting tables are respectively positioned at two sides of the electromagnetic switch; or the relay mounting table is one, and at least two matching angles are formed between the starter middle cover and the driving end cover in the circumferential direction so that the relay mounting table can be positioned on any side of the electromagnetic switch. According to the invention, the relay installation position of the starter middle cover can cover the requirements on relay installation in most application conditions, the number of variants of parts such as the driving end cover, the relay and the shield is reduced, meanwhile, the number of parts is small, and the assembly is simple.

Description

Middle cover of starter and starter comprising same

Technical Field

The present invention relates to a starter, and more particularly, to a starter middle cover capable of simplifying an installation form of a relay, and a starter including the same.

Background

Referring to fig. 1, a starter circuit diagram is shown, and a general starter structure includes a motor 1, an electromagnetic switch 2, a relay 3, and the like. The electromagnetic switch 2 is used for connecting the motor 1 with a power supply and controlling the driving gear to drive out, and the motor 1 provides enough torque and rotating speed to realize the starter of the engine. Many vehicles adopt an ECU to directly control the starter to work, the ECU control current is smaller than the electromagnetic switch 2 current, and the starter cannot be directly controlled, so that the relay 3 is also needed to realize the control of electrifying the electromagnetic switch 2.

In general, the relay 3 is mounted on the starter body, and as shown in fig. 2, the most common mounting method is to provide a mounting table 41 on the driving end cover 4, drill a mounting hole 42, tap a thread in the mounting hole 42, and fix the relay 3 on the driving end cover 4 by a screw. Meanwhile, the installation positions of the installation tables 41 are different from each other in order to accommodate the installation of other components and facilitate wiring.

The front end of the driving end cover 4 is provided with a flange surface, the rear end is provided with a spigot matched with the stator, and the middle part is usually smaller in diameter. In this case, four molds, front, rear, left, right, are required to drive the molds of the end cap 4, and the overall mold cost is high.

In addition, since the drill bit is tapered when the mounting hole 42 is drilled, and the tap does not reach the bottommost part of the hole when tapping, there are a segment of unthreaded hole 43 and a tip 44, resulting in an increase in the depth of the mounting hole 42, so that the mounting table 41 for mounting the relay 3 is widened, and the position of the relay 3 cannot be sufficiently close to the starter body.

When facing different space demands of different applications, the installation position and the installation angle of the relay 3 need to be adjusted, so that the number of modification models of parts such as the relay 3, the driving end cover 4 and the protective cover is increased, and the management of products is not facilitated.

In other installations, the relay may be secured by way of a mounting bracket. The mounting bracket may be welded to the body of the electromagnetic switch, fixed between the electromagnetic switch and the end cap (see patent CN105164402 a), or fixed outside the end cap, stator (see patent CN 103437932 a). This approach allows for more flexibility in implementation without requiring adjustment of the drive end cap, but adds a component mounting bracket, and many variations in the parts such as the shield.

Disclosure of Invention

The invention aims to solve the problem that various driving end covers, shields and other parts are required to be correspondingly arranged for completing the installation of a relay when facing different space requirements of different applications at present, and provides a starter middle cover and a starter comprising the same.

In order to achieve the above object, the starter middle cover of the present invention is connected to a starter, the starter includes a driving end cover, a shield, an electromagnetic switch and a relay, the starter middle cover and the electromagnetic switch shield are respectively connected to the driving end cover, and the electromagnetic switch and the relay are respectively connected to the shield, wherein the starter middle cover includes: the middle cover body is connected to the driving end cover; and the relay mounting table is arranged along the outer circumferential surface of the middle cover body in a protruding way and comprises a relay mounting hole. The relay mounting tables are two, and the two relay mounting tables are respectively positioned at two sides of the electromagnetic switch; or the relay mounting table is one, and at least two matching angles are formed between the starter middle cover and the driving end cover in the circumferential direction so that the relay mounting table can be positioned on any side of the electromagnetic switch.

In one embodiment of the above starter middle cover, the relay mounting hole is a relay mounting hole, and the relay is connected to the relay mounting hole through a tapping screw.

In an embodiment of the above starter middle cover, the relay mounting hole is a mold molding hole, and the relay mounting hole is tapered and includes a bottom surface that is a plane or an arc surface.

In an embodiment of the above starter middle cover, the inner circumference of the middle cover body includes a protruding portion and a groove portion that are disposed at intervals, and the relay mount is disposed on a portion of the outer circumferential surface of the middle cover body that corresponds to the protruding portion.

In one embodiment of the starter middle cover, the relay mounting hole extends toward the boss.

In one embodiment of the above starter middle cover, the relay mount includes a relay mount surface that is tangential to an outer circumferential surface of the middle cover body.

In one embodiment of the starter middle cover, the relay mount includes a relay mount surface that is parallel to a plane tangential to an outer circumferential surface of the middle cover body.

In an embodiment of the above starter middle cover, the middle cover body has a radial extension line perpendicular to the relay mounting surface, the relay mounting hole extends toward the center of the middle cover body in the relay mounting surface, and an axis of the relay mounting hole is parallel to the radial extension line.

The starter comprises a driving end cover, a starter middle cover, a protecting cover, a relay and an electromagnetic switch, wherein the starter middle cover and the electromagnetic switch are respectively connected to the driving end cover, and the electromagnetic switch and the relay are respectively connected with the protecting cover, and the starter middle cover is the starter middle cover.

In an embodiment of the above starter, the starter includes a central axis, and a farthest distance from an outer contour of the relay to the central axis is smaller than a farthest distance from the outer contour of the shield to the central axis.

The invention has the beneficial effects that:

the driving end cover and the starter middle cover are two independent parts, and the driving end cover die only needs to be two front and rear pieces, so that the die cost is greatly reduced. The relay mount table is arranged on the starter middle cover, the starter middle cover can cover most application conditions only by designing two relay mount positions, and the corresponding shield is also only required to be designed in two forms, so that the number of variations of parts such as a relay, a driving end cover and the shield is reduced. Meanwhile, the assembly is simple, and the number of parts is small. The two relay positions can be provided with two relay mounting tables, and one relay mounting table can be also arranged, so that the relay mounting table can be switched between the two relay positions through the switching of the matching angle of the starter middle cover and the driving end cover.

The relay mounting nail adopts self-tapping nails, and the self-tapping nails are connected to the relay mounting holes to fix the relay, so that the threaded matching part can be sufficiently close to the starter body, and the position of the relay can be sufficiently close to the starter body.

In addition, the relay mounting hole can be a die forming hole, the bottom surface is a plane or an arc surface, the center is not needed, and the small-size relay is matched, so that the starter is more beneficial to reducing the size of the starter.

In addition, set up in the starter well lid with ring gear and shock pad complex recess portion to and the bellying that sets up with recess portion interval, relay mount pad is located respectively on the outer circumference of the well lid body corresponding with the bellying for the relay mounting hole can extend to thicker bellying, and the relay mount pad has sufficient degree of depth in radial for setting up the relay mounting hole, and the starter body can be pressed close to more to the assembly relay.

After the starter is assembled, the farthest distance from the outer contour line of the relay to the central axis of the starter is smaller than the farthest distance from the outer contour line of the shield to the central axis, and the relay is positioned in the outer contour line of the shield so as to ensure that the starter has the smallest volume.

The invention will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.

Drawings

Fig. 1 is a general starter circuit diagram;

FIG. 2 is a cross-sectional view of a relay mount and mounting hole on a drive end cap as referred to in the background;

fig. 3A is a front view of a first relay mounting of the starter of the present invention;

fig. 3B is a left side view of a first relay mounting of the starter of the present invention;

fig. 3C is a front view of a second relay mounting of the starter of the present invention;

fig. 4A is an isometric view of a first embodiment of a starter middle cover of the present invention;

fig. 4B is a front view of the first embodiment of the starter middle cover of the present invention;

fig. 5 is a schematic perspective view of a shield of the starter of the present invention;

fig. 6 is an assembly view of a middle cover, an inner ring gear, and a shock pad of the starter of the present invention;

fig. 7 is an isometric view of a second embodiment of a starter middle cover of the present invention.

Wherein reference numerals are used to refer to

In the prior art

1-motor

2-electromagnetic switch

3-relay

4-drive end cap

41-relay mounting table

42-Relay mounting hole

43-light hole

44-centre

In the present invention

100-motor

200-electromagnetic switch

300-relay

500-drive end cap

600-starter middle cover

610-middle cover main body

620-relay mounting table

621. 622-Relay mounting hole

623-relay mounting surface

630-relay mounting table

631. 632-relay mounting hole

640-groove part

650-boss

651. 652-raised portion

600' -starter middle cover

620' -relay mounting table

621', 622' -Relay mounting holes

700-relay mounting nail

800-shield

900-inner gear ring

1000-shock pad

Detailed Description

The following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, so as to further understand the purpose, the scheme and the effects of the present invention, but not to limit the scope of the appended claims.

Referring to fig. 3A and 3B, the starter of the present invention includes parts such as a motor 100, an electromagnetic switch 200, a relay 300, a driving end cap 500, a starter middle cap 600, a relay mounting nail 700, and a shield 800, the starter middle cap 600 and the electromagnetic switch 200 are respectively connected to the driving end cap 500, and the electromagnetic switch 200 and the relay 300 are respectively connected to the shield 800. Wherein, be provided with the relay mount table on the starter middle cover 600, the body setting of starter middle cover 600 is pressed close to the position of relay mount table, and the relay mount table includes the relay mounting hole. The starter middle cover can cover most of application conditions only by designing two relay mounting positions, wherein the two relay mounting tables can be arranged at the two relay positions and are respectively positioned at two sides of the electromagnetic switch; the relay mounting table can be arranged, and can be switched between two relay positions through the switching of the matching angle of the starter middle cover and the driving end cover, namely, the relay mounting table can be positioned on any side of a needed electromagnetic switch according to the needs. Specific examples are described below.

First embodiment

Fig. 4A, 4B show a first embodiment of the starter middle cover of the present invention. Referring to fig. 3A to 3C and fig. 4A and 4B, the starter middle cover 600 includes a middle cover body 610 and a relay mount, and the middle cover body 610 is used to connect with the driving end cover 500. The relay mount is provided protruding along the outer circumferential surface of the middle cap body 610. In the present embodiment, two relay mount tables 620 and 630 are provided on the starter middle cover 600, and a plurality of relay mount holes for mounting the relay 300 are provided on each of the relay mount tables 620 and 630, respectively, for example, the relay mount table 620 has two relay mount holes 621, 622, and the relay mount table 630 has two relay mount holes 631, 632.

Fig. 3A and 3C show the case when the relay 300 is mounted to the relay mount 620 on the left side and the relay mount 630 on the right side, respectively.

After the assembly into a complete machine, the relay mount 620 and the relay mount 630 are located at positions on both sides of the electromagnetic switch 200, respectively. The relay 300 may be selectively mounted to the relay mounting holes 621, 622 of the left relay mount 620 or the relay mounting holes 631, 632 of the right relay mount 630 through the relay mounting nail 700 in the form of a tapping screw according to the mounting space of various applications.

Typically, when the starter is mounted to the second and third image points with respect to the engine, as viewed from the rear end of the starter, the relay 300 is mounted to the left relay mount 620; when the starter is mounted to the first and fourth pixels with respect to the engine, the relay 300 is mounted to the right relay mount 630, and the relay 300 and the electromagnetic switch 200 terminals for wiring can be ensured to be located outside the engine, facilitating wiring.

Referring to fig. 5, a shield 800 of the starter includes a shield body 810 and conductive elements 820 and 830 embedded in the shield body 810, the conductive elements 820 and 830 making electrical connection of the electromagnetic switch 200 and the relay 300. Since there are only two mounting positions of the relay 300, only two corresponding shields 800 are required.

The two installation modes can cover most application requirements by matching with the relay 300 with small volume, the starter middle cover 600 does not need other modification forms, the parts such as the shield 800 and the like only have two corresponding types, and no more modification models are generated, so that the installation procedure is greatly simplified, and the cost is saved.

Referring to fig. 4B, relay mounting holes 621, 622 of relay mount 620 and relay mounting holes 632, 633 of relay mount 630 are shown in phantom. The relay mounting holes 621, 622 and the relay mounting holes 631, 632 are mold forming holes, i.e. are all in the form of light holes. The relay mounting holes 621, 622 and 631, 632 are tapered, typically between 1 ° and 2 °. The bottom surface of each mounting hole is a plane or a cambered surface, and no center is arranged. The relay mounting nail 700 in the form of a self-tapping screw is fitted to secure the relay 300 close to the starter body to the maximum extent.

When the relay mounting nail 700 in the form of the tapping screw is assembled again after one reverse disassembly, a screw fastening glue is used on the screw surface to ensure the fastening effect.

As further shown in fig. 4B, the relay mounts 620, 630 of the present invention each include a relay mounting surface that is tangential to the outer circumferential surface of the middle cap body 610.

Taking the relay mount 620 as an example, the relay mount 620 includes a relay mount surface 623, the relay mount surface 623 is tangential to the outer circumferential surface 611 of the middle cap body 610, or the relay mount surface 623 is parallel to a plane S tangential to the outer circumferential surface 611 of the middle cap body 610, ensuring that the relay mount is disposed as close to the middle cap body 610 as possible, providing a condition for miniaturization of the starter.

The middle cover body 610 has a radial extension line L1 perpendicular to the relay mounting surface 623, the relay mounting holes 621, 622 extend toward the center O of the middle cover body 610 at the relay mounting surface 623, and the axes L2 of the relay mounting holes 621, 622 are parallel to the radial extension line L1, i.e., the relay mounting holes 621, 622 of the relay mounting stand 620 extend the center O of the middle cover body 610 in the radial direction, ensuring that the mounting position of the relay 300 is as close to the starter body as possible.

Referring to fig. 4B and 6, the starter middle cover 600 further includes a groove 640 and a protrusion 650, the groove 640 and the protrusion 650 being spaced apart along the inner circumference of the middle cover body 610, one groove 640 and two protrusions 651, 652 are shown, and the groove 640 is located between the protrusions 651, 652. Specifically, the groove 640 is provided inside the spigot of the starter middle cover 600 for cooperation with the ring gear 900 and the shock pad 1000, and the inside diameter of the boss 650 is small, and forms a stress surface together with the groove 640 for bearing circumferential forces from the ring gear 900 and the shock pad 1000.

The present invention provides the relay mount 620, 630 to the outer circumferential surface of the middle cap body 610 of the portion of the middle cap body 610 corresponding to the boss 650, for example, on the outer circumferential surface corresponding to the boss 651, 652, and the relay mount holes 621, 622, 631 and 632 extend toward the boss 651, 652. Because of the large thickness of the boss 650, the relay mount 620 and 630 have a sufficient depth in the radial direction for providing the relay mount holes 621, 622, 631 and 632. In addition, the outer diameter of the protruding part arranged on other relay-free mounting tables can be properly reduced on the basis of ensuring the strength, so that the material consumption is reduced.

Fig. 6 shows a state in which the starter middle cover 600, the ring gear 900, and the shock pad 1000 are assembled, wherein the ring gear 900 is transferred to the boss 651, 652 through the shock pad 1000 after receiving circumferential force.

In addition, referring to fig. 3A, the starter has a central axis L3, and after the starter of the present invention is assembled, the farthest distance from the outer contour L4 of the relay 300 to the central axis L3 is smaller than the farthest distance from the outer contour L5 of the shield 800 to the central axis L3. That is, the relay 300 is located within the outer contour of the shroud 800 to ensure that the starter has as little volume as possible.

Second embodiment

Fig. 7 shows a starter middle cover in a second embodiment of the invention. In this embodiment, one relay mount 620' is provided on the starter middle cover 600', and two relay mount holes 621' and 622' are provided on the relay mount 620 '. The starter middle cover 600' and the driving end cover 500 have at least two mounting angles in the circumferential direction, the first mounting angle enables the relay mounting table 620' to be located on one side of the electromagnetic switch 300 after the whole machine is assembled, and the second mounting angle enables the relay mounting table 620' to be located on the other side of the electromagnetic switch 300 after the whole machine is assembled.

The mating angle of the starter middle cover 600' and the driving end cover 500 in the circumferential direction is selected according to the installation space of different application conditions. Typically, when the starter is mounted to the second and third images with respect to the engine, as viewed from the rear end of the starter, the starter middle cover 600 'is mounted at such an angle to the drive end cover 500 that the relay mount 620' is located on the left side of the electromagnetic switch 300; when the starter is mounted to the first and fourth image sensors with respect to the engine, the mounting angle of the starter middle cover 600 'and the driving end cover 500 is such that the relay mount 620' is positioned on the right side of the electromagnetic switch 300, and it is possible to secure the terminals of the relay 300 and the electromagnetic switch 200 for wiring to the outside of the engine, facilitating wiring.

The two installation modes can cover most application requirements by matching with the small-size relay, other deformation forms are not needed for the middle cover, and the parts such as the shield and the like are only correspondingly two, so that more deformation models can not be generated.

Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention, as will be apparent to those skilled in the art, without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a lid in starter, links together on the starter, the starter includes driving end cover, guard shield, electromagnetic switch and relay, lid in the starter, electromagnetic switch connect respectively on the driving end cover, electromagnetic switch and relay respectively with the guard shield is connected, its characterized in that, the lid includes in the starter:

the middle cover body is connected to the driving end cover; and

a relay mounting table protruding along an outer circumferential surface of the middle cover body and including a relay mounting hole;

the relay mounting tables are two, and the two relay mounting tables are respectively positioned at two sides of the electromagnetic switch; or the relay mounting table is one, and at least two matching angles are formed between the starter middle cover and the driving end cover in the circumferential direction so that the relay mounting table can be positioned on any side of the electromagnetic switch;

the inner circumference of the middle cover body comprises a protruding part and a groove part which are arranged at intervals, and the relay mounting table is arranged on the outer circumference surface of the part of the middle cover body corresponding to the protruding part;

the relay mounting table comprises a relay mounting surface, wherein the relay mounting surface is tangent to the outer circumferential surface of the middle cover body, or the relay mounting surface is parallel to a plane tangent to the outer circumferential surface of the middle cover body, the middle cover body is provided with a radial extension line perpendicular to the relay mounting surface, the relay mounting hole extends towards the center of the middle cover body in the relay mounting surface, and the axis of the relay mounting hole is parallel to the radial extension line.

2. The starter middle cover according to claim 1, wherein the relay mounting hole is a relay mounting hole, and the relay is connected to the relay mounting hole by a tapping screw.

3. The starter middle cover according to claim 2, wherein the relay mounting aperture is a mold molding aperture, and the relay mounting aperture is tapered and includes a bottom surface that is planar or arcuate.

4. The starter middle cover according to claim 1, wherein the relay mounting hole extends toward the boss.

5. The starter comprises a driving end cover, a starter middle cover, a protective cover, a relay and an electromagnetic switch, wherein the starter middle cover and the electromagnetic switch are respectively connected to the driving end cover, and the electromagnetic switch and the relay are respectively connected with the protective cover.

6. The starter of claim 5 including a central axis, wherein the furthest distance from the outer contour of the relay to the central axis is less than the furthest distance from the outer contour of the shield to the central axis.