KR101073399B1 - Housing for internal gear assembly of start motor - Google Patents

Abstract

The present invention relates to a start motor that can support all the outer surfaces of the internal gear assembly to improve the buffering effect of the internal gear assembly.

The start motor according to the present invention includes a magnetic switch, an overrunning clutch linearly reciprocated by the magnetic switch, a lever connecting the magnetic switch and the overrunning clutch, and a driving force of the armature assembly to the overrunning clutch. An internal gear assembly for connecting the armature assembly and the overrunning clutch to be transmitted, and a coupling groove portion is formed so that the hinge shaft of the lever is rotatably coupled, the installation space portion in which the overrunning clutch is installed And a support member inserted into the front housing to which the internal gear assembly is inserted and coupled to the coupling groove to support the internal gear assembly.

Vehicle, motor, damper, start, start

Description

Starting motor {HOUSING FOR INTERNAL GEAR ASSEMBLY OF START MOTOR}

The present invention relates to a start motor, and more particularly, to a start motor that can support all the outer surface of the internal gear assembly to improve the buffering effect of the internal gear assembly.

In general, a car engine cannot start by itself, so the first crankshaft must be turned by external force to cause the engine to explode and rotate the engine.

The starting device is to turn the crankshaft of the engine.

Such a starter includes a start motor for generating torque for cranking of an engine, and a battery for applying a drive power for the start motor.

The start motor is equipped with a magnetic switch, an armature assembly, an overrunning clutch (ORC) for transmitting the driving force of the armature assembly to the crankshaft of the engine, and an internal gear assembly for connecting the armature assembly and the overrunning clutch. It is configured to include. The internal gear assembly is then installed in the front housing of the start motor.

The above technical configuration is a background art for helping understanding of the present invention, and does not mean a conventional technology well known in the art.

The conventional vehicle start motor having the above-described configuration is provided with a lever for linearly reciprocating the overrunning clutch on the front housing, and the housing does not cover all the outer surfaces of the internal gear assembly due to the installation of the lever. There is a problem that the buffering effect of the assembly is lowered.

The present invention has been made in order to improve the above-mentioned conventional problems, an object of the present invention to provide a start motor that can improve the buffering effect of the internal gear assembly to support all the outer surface of the internal gear assembly. .

A start motor according to an embodiment of the present invention for achieving the above object, a magnetic switch, an overrunning clutch that is linearly reciprocated by the magnetic switch, a lever connecting the magnetic switch and the overrunning clutch, An internal gear assembly connecting the armature assembly and the overrunning clutch so that a driving force of the armature assembly can be transmitted to the overrunning clutch, and a coupling groove is formed to pivotally couple the hinge shaft of the lever, And a front housing into which the internal gear assembly is inserted and coupled to an installation space in which the overrunning clutch is installed, and a support member inserted into the coupling groove to support the internal gear assembly.

Here, the coupling groove portion, characterized in that it comprises a first coupling groove to which the hinge shaft is inserted and fixed and a second coupling groove formed on the upper side of the first coupling groove so that the support member is fixed.

In addition, the support member has the same curvature as the inner circumferential surface of the installation space portion so that the coupling portion inserted into the coupling groove and fixed to the outer surface of the internal gear assembly, the support portion protruding from the coupling portion It is characterized by including.

In addition, the support member, characterized in that it further comprises a gripping portion protruding to the upper end of the coupling portion.

The internal gear assembly may further include a ring gear in which a planetary gear is engaged with the ring gear, a ring gear coupled to the ring gear to restrain rotation of the ring gear, and a ring gear supporter inserted into the installation space of the front housing and the planetary gear. And a damper portion provided between the ring gear and the ring gear supporter so as to alleviate an impact acting on the ring gear through a gear and being in contact with and supported by the support member.

The damper unit may include a main damper for alleviating an impact generated when the planetary gear is rotated in one direction and an auxiliary damper for alleviating an impact generated when the planetary gear is rotated in the other direction. .

The main damper and the auxiliary damper may have different sizes.

In addition, the main damper is characterized in that formed larger than the auxiliary damper.

The main damper and the auxiliary damper may include a fixed pole supported by the ring gear supporter, a movable pole supported by the ring gear, and a body connecting the fixed pole and the movable pole.

In addition, the movable pole is characterized in that the height is formed equal to or smaller than the height of the fixed pole.

In addition, the fixed pole and the movable pole is characterized in that the height is formed larger than the height of the body.

According to the start motor according to the embodiment of the present invention configured as described above, since all the outer surface of the internal gear assembly is supported by the front housing, there is an advantage that the buffer effect of the internal gear assembly is improved.

Specific embodiments of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

Hereinafter, a start motor according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing the configuration of a start motor according to an embodiment of the present invention, Figure 2 is a perspective view showing the configuration of a front housing, a lever, an internal gear assembly and a support member according to an embodiment of the present invention, Figure 3 Is an enlarged perspective view of the main portion showing the configuration of the coupling groove and the support member of the front housing according to an embodiment of the present invention, Figure 4 is an enlarged sectional view of the main portion showing a state in which the support member according to the embodiment of the present invention is coupled to the coupling groove portion 5 is a front view showing the configuration of the support member according to an embodiment of the present invention, Figure 6 is a bottom view showing the configuration of a support member according to an embodiment of the present invention, Figure 7 is a view according to an embodiment of the present invention An enlarged view of the main portion of the support member and the internal gear assembly in a state of being coupled to the front housing.

As shown in FIGS. 1 to 7, the start motor 100 according to the present invention includes a front housing 110, a magnetic switch 101 installed at the front housing 110, and a long bolt (not shown). Armature assembly 103 of the front housing 110 is installed through, and the overrunning clutch 105 for transmitting the rotational force of the armature assembly 103 to the crankshaft (not shown) of the engine.

In addition, the start motor 100 includes an internal gear assembly inserted into the front housing 110, a lever 107 and a front housing 110 connecting the magnetic switch 101 and the overrunning clutch 105. It is further provided with a support member 130 for supporting the internal gear assembly (120).

The start motor 100 according to the present embodiment is covered by all the outer surface of the internal gear assembly 120 by the support member 130 coupled to the front housing 110, it will be described in detail.

The front housing 110 is formed with a coupling groove 111 so that the lever 107 connecting the magnetic switch 101 and the overrunning clutch 105 can be rotatably coupled, and the magnetic switch 101 of the front housing 110 is formed on the upper housing 110. The operating space 113 is formed to move the operating shaft, and the installation space 115 is formed so that the internal gear assembly 120 and the overrunning clutch 105 are installed below. At this time, the front housing 110 is the operating space 113 and the installation space 115 is communicated by the coupling groove 111, which is a space in which the lever 107 installed in the coupling groove 111 can be rotated This is to ensure it is secured.

In addition, the lever 107 rotatably coupled to the front housing 110 is provided with a hinge shaft 107a rotatably inserted into the coupling groove 111 so that the lever 107 can be smoothly rotated in the front housing 110.

The coupling groove 111 of the front housing 110 may include a first coupling groove 111a into which the hinge shaft 107a is inserted and fixed so that the lever 107 and the support member 130 can be installed together at the same time. It is formed on one side of the first coupling groove 111a and includes a second coupling groove 111b to which the support member 130 is fixed.

The support member 130 installed in the coupling groove 111 of the front housing 110 may be coupled to the coupling groove 131 inserted into the coupling groove 111 and the outer surface of the internal gear assembly 120 may be supported. It includes a support portion 133 having the same curvature as the inner peripheral surface of the installation space 115 of the front housing 110. In addition, the support member 130 further includes a grip portion 135 protruding from the upper end of the coupling portion 131 so that the user can easily detach the support member 130 to the front housing 110.

In addition, the support member 130 includes a first coupling part 131a which is inserted into and fixed in the first coupling groove 111a so that the coupling part 131 can be more stably coupled to the coupling groove 111, and It is composed of a second coupling portion (131b) provided on the upper side of the first coupling portion (131a) is inserted into the second coupling groove (111b) and fixed. In addition, the support member 130 has a support 133 protruding from the first coupling part 131a to be in contact with the outer surface of the internal gear assembly 120.

In the start motor 100 according to the present embodiment configured as described above, the coupling groove 111 of the front housing 110 in which the lever 107 is installed is completely sealed by the support member 130, and thus the front housing 110 is provided. The outer surface of the internal gear assembly 120, which is inserted into the installation space 115 of the) is completely covered. As a result, the internal gear assembly 120 is more stably installed in the front housing 110, and the outer surface of the damper portion 125 of the internal gear assembly 120 to be described later contacts the support member 130. As a result, the buffering effect of the internal gear assembly 120 is improved.

Meanwhile, the internal gear assembly 120 according to the present embodiment coupled to the front housing 110 will be described in detail with reference to FIGS. 8 and 9.

8 is an exploded perspective view showing the configuration of an internal gear assembly according to an embodiment of the present invention, Figure 9 is a front view showing a damper portion of the internal gear assembly according to an embodiment of the present invention.

As shown in FIGS. 8 and 9, the internal gear assembly 120 according to the present embodiment is connected to a drive shaft (not shown) of the overrunning clutch 105 through a planetary gear (not shown). The gear is engaged with the sun gear (not shown) of the armature shaft (not shown) of the armature assembly 103.

The internal gear assembly 120 generates a lot of loads and shocks when the armature assembly 103 is rotated to start the vehicle, and absorbs and mitigates the loads and shocks.

To this end, the internal gear assembly 120 according to the present invention, the ring gear 121, the ring gear supporter 123 and the ring gear (121) is coupled to the ring gear 121 is installed in the front housing 110 ( It includes a damper portion 125 for mitigating the load and impact transmitted to 121.

The ring gear 121 of the internal gear assembly 120 has a gear 121a formed on the inner surface thereof so that the planetary gear can be engaged with the damper support 123c for fixing the damper portion 125 on the outer surface thereof. . In addition, the ring gear 121 is formed with a reinforcing rib 121b supporting the gear 121a on one surface of the gear 121a so as to improve the durability of the gear 121a meshed with the planetary gear.

In addition, the ring gear 121 has a damper support portion 121c formed at regular intervals along the outer circumferential surface, and support ribs 121c 'protruding from both sides of the damper support portion 121c to prevent the damper portion 125 from being separated. Is formed. The support rib 121c ′ of the damper support part 121c has a chamfer formed on an inner surface of the damper support part 121c that is in contact with the damper part 125.

When the chamfer is formed in the support rib 121c 'of the ring gear 121 as described above, the ring gear 121 is rotated in the ring gear supporter 123 by the planetary gear, and the damper part 125 is compressed when the damper part 125 is compressed. 125 is prevented from protruding in the radial direction of the ring gear 121. That is, since the ring gear 121 guides the damper part 125 to be compressed while receiving the force in the inner direction of the ring gear 121 when the damper part 125 is compressed, the damper part 125 is an internal gear. Departure from the assembly 120 is prevented.

In addition, the ring gear supporter 123 inserted into and installed in the installation space 115 of the front housing 110 is provided with a coupling hole 123a through which a drive shaft penetrates in a central portion thereof, and a ring gear 121 at the front thereof. The damper support portion 123c protrudes at a predetermined interval so as to be paired with the damper support portion 121c. At this time, the ring gear supporter 123 is coupled to the ring gear 121 so that the damper support portion 121c of the ring gear 121 is positioned between the damper support portions 123c, and the reinforcing rib 121b of the ring gear 121 is provided. ) Side is in contact with the inner surface.

Like the ring gear 121, the ring gear supporter 123 also has support ribs 123c 'protruding from both sides of the damper support part 123c, and the damper part 125 is provided on the support ribs 123c'. A chamfer is formed in contact.

The damper part 125 is provided between the ring gear 121 and the ring gear supporter 123, and compresses the shock and the load acting on the ring gear 121 while being compressed. To this end, the damper unit 125 may be connected to the main damper 127 so as to alleviate both the impact and the load due to the forward and reverse rotation of the ring gear 121 regardless of the rotational direction of the ring gear 121. It is configured to include a damper (129).

In addition, the damper part 125 is installed in the internal gear assembly 120 such that the main damper 127 and the auxiliary damper 129 are positioned at both sides of the damper support part 121c of the ring gear 121, and the ring When the gear 121 rotates, the gear 121 is compressed by the damper support part 121c.

At this time, the damper unit 125 is formed such that the main damper 127 and the auxiliary damper 129 have different sizes, which is more smoothly affected by the impact and load applied to the ring gear 121. To alleviate the problem.

Specifically, in the damper unit 125 according to the present embodiment, the width W1 of the main damper 127 is formed to be wider than the width W2 of the auxiliary damper 129. That is, the main damper 127 is formed larger than the auxiliary damper 129.

Accordingly, when the vehicle is started, that is, when the armature shaft is about to rotate, the largest shock and load are generated in the ring gear 121, and the large shock and load are absorbed by the main damper 127 to mitigate them. do. Subsequently, when the drive shaft rotates normally, the planetary gear, which is forced in the rotational direction by the drive shaft, is rotated in the opposite direction of rotation by the reaction and at the same time, the main damper 127 that is compressed is restored and the ring gear 121 drives. In the opposite direction of rotation of the shaft, weak shocks and loads are generated.

That is, the weak damper and the load generated in the opposite direction of rotation of the ring gear 121 are alleviated while the auxiliary damper 129 is compressed.

In the present embodiment, for example, the main damper 127 is formed to be larger than the auxiliary damper 129, but the main damper 127 and the auxiliary damper 129 may be manufactured in the same size.

In addition, the main damper 127 and the auxiliary damper 129 of the damper unit 125 according to the present embodiment are compressed more smoothly when compressed by the ring gear 121 and at the same time the damper unit 125 contacts the front. The housing 110 is formed to minimize impact or load.

To this end, the main damper 127 and the auxiliary damper 129 are formed such that both ends contacting the ring gear 121 and the ring gear supporter 123, that is, one end and the other end have different heights. . Preferably, the main damper 127 and the auxiliary damper 129 have a height L2 of one end portion which is in contact with the damper support portion 121c of the ring gear 121 to the damper support portion 123c of the ring gear supporter 123. It is formed smaller than the height (L1) of the other end in contact.

Specifically, each of the main damper 127 and the auxiliary damper 129 is fixed poles (127a, 129a) in contact with the ring gear supporter 123 and the movable pole (127b) in contact with the ring gear 121 is supported. 129b and bodies 127c and 129c which interconnect the fixed poles 127a and 129a and the movable poles 127b and 129b. At this time, the main damper 127 and the auxiliary damper 129 has a height (L1, L2) of the fixed poles (127a, 129a) and the movable poles (127b, 129b) more than the height (L3) of the body (127c, 129c). It is formed high, the height (L1) of the fixed poles (127a, 129a) is formed higher than the height (L2) of the movable poles (127b, 129b).

As such, the main damper 127 and the auxiliary damper 129 have the heights L2 and L3 of the movable poles 127b and 129b and the bodies 127c and 129c than the height L1 of the fixed poles 127a and 129a. If it is formed low, the moving poles 127b and 129b and the bodies 127c and 129c do not come into contact with the cover, thereby compressing more smoothly. Since it is not in contact with the impact transmitted from the ring gear 121 is minimized to the outside.

In addition, each of the main damper 127 and the auxiliary damper 129 is fixed poles (127a, 129a) and the movable poles (127b, 129b) in contact with the support ribs (121c ', 123c') of the damper support (121C, 123c). The chamfers contacting the chamfers of the support ribs 121c 'and 123c are respectively formed. This is because when the main damper 127 and the auxiliary damper 129 are compressed by the damper support portion 121c of the ring gear 121, the bodies 127c and 129c are separated or protruded outward of the ring gear 121. This is to prevent. That is, the main damper 127 and the auxiliary damper 129 is to be compressed while receiving a force in the inner direction of the ring gear 121.

Meanwhile, the through damper 129d is formed in the bodies 127c and 129c so that the auxiliary damper 129 formed smaller than the main damper 127 can be compressed smoothly.

In addition, in this embodiment, the height L1 of the fixed poles 127a and 129a is formed to be higher than the height L2 of the movable poles 127b and 129b, but the fixed poles 127a and 129a are described. The height L1 of) and the height L2 of the movable poles 127b and 129b may be formed at the same height.

As described above, the damper part 125 according to the present exemplary embodiment has an outer surface located at the engaging groove 111 of the front housing 110 when it is compressed by the ring gear 121 to the support part 133 of the support member 130. Contact. As a result, the internal gear assembly 120 operates more stably in the front housing 110, and the damper unit 125 absorbs the load and impact of the ring gear 121 more effectively, thereby improving the buffering effect.

Hereinafter, the operation of the start motor in the embodiment of the present invention configured as described above will be described in detail.

In the start motor 100 according to the present embodiment, the coupling groove 111 of the front housing 110 in which the lever 107 is installed is completely sealed by the support member 130. Accordingly, the internal gear assembly 120 inserted into the installation space 115 of the front housing 110 contacts the support member 130 and is completely covered on the outer surface thereof.

In particular, since the damper portion 125 of the internal gear assembly 120 contacts the support member 130, the damper portion 125 of the internal gear assembly 120 is not only more stably installed, but also the damper portion of the internal gear assembly 120. 125 more effectively absorbs the impact and load generated in the ring gear 121 to improve the buffering effect of the internal gear assembly 120.

In addition, since the large shock and load generated in the ring gear 121 when starting the vehicle are buffered and alleviated by the damper portion 125 whose outer surface is completely covered by the support member 130, the internal Impact and load transmitted to the gear assembly 120 is significantly reduced.

Specifically, when the vehicle is started, that is, when the armature shaft is about to rotate, the greatest shock and load are transmitted to the ring gear 121, and the ring gear 121 is rotated in the rotational direction by the impact and load. Is rotated. Then, the moving poles 127b and 129b and the bodies 127c and 129c of the main damper 127 are compressed toward the fixed poles 127a and 129a by the damper support part 121c of the ring gear 121. Shock and load applied to) are alleviated.

That is, the shock and load generated in the ring gear 121 are absorbed and relaxed while the main damper 127 is compressed.

At this time, the support ribs 121c 'and 123c' of the ring gear 121 and the ring gear support 123, and the fixed poles 127a and 129a and the movable poles 127b and 129b of the main damper 127 in contact therewith. Since the chamfer is formed and the main damper 127 is compressed while receiving a force in the inner direction of the ring gear 121, the main damper 127 is minimized from escaping or protruding outward of the ring gear 121.

In addition, after the vehicle is started, the ring gear 121 rotates slightly in the counterclockwise direction, that is, counterclockwise, so that impact and load are generated. As such, the ring gear 121 has a shock and load in the counterclockwise direction. When the ring gear 121 is applied, the auxiliary damper 129 is compressed while the ring gear 121 is rotated counterclockwise. This alleviates the impact and load transmitted to the ring gear 121.

As described above, the present invention has been described with reference to the embodiment shown in the drawings, but this is merely exemplary, and those skilled in the art to which the art pertains have various modifications and other equivalent thereto. It will be appreciated that examples are possible. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a cross-sectional view showing the configuration of a start motor according to an embodiment of the present invention.

 2 is a perspective view showing the configuration of a front housing, a lever, an internal gear assembly and a support member according to an exemplary embodiment of the present invention.

Figure 3 is an enlarged perspective view of the main portion showing the configuration of the coupling groove and the support member of the front housing according to an embodiment of the present invention.

Figure 4 is an enlarged cross-sectional view of the main portion showing a state in which the support member is coupled to the coupling groove according to an embodiment of the present invention.

5 is a front view showing the configuration of a supporting member according to an embodiment of the present invention.

Figure 6 is a bottom view showing the configuration of a support member according to an embodiment of the present invention.

7 is an enlarged view illustrating main parts of a support member and an internal gear assembly coupled to the front housing according to an exemplary embodiment of the present invention.

8 is an exploded perspective view showing the configuration of an internal gear assembly according to an embodiment of the present invention.

9 is a front view showing a damper portion of the internal gear assembly according to an embodiment of the present invention.

♠ Code description for the main part of the drawing ♠

100: start motor 101: magnetic switch

103: Amateur Assembly 105: Overrunning Clutch

107: lever 107a: hinge axis

110: front housing 111: coupling groove

120: internal gear assembly 121: ring gear

123: ring gear support 125: damper portion

130: support member 131: coupling portion

133: support portion 135: gripping portion

Claims (11)

Magnetic switch; An overrunning clutch linearly reciprocating by the magnetic switch; A lever connecting the magnetic switch and the overrunning clutch; An internal gear assembly connecting the armature assembly and the overrunning clutch so that a driving force of the armature assembly can be transmitted to the overrunning clutch; A front housing having a coupling groove formed to pivotally couple the hinge shaft of the lever, and wherein the internal gear assembly is inserted into the installation space in which the overrunning clutch is installed; And And a support member inserted into the coupling groove to support the internal gear assembly. The coupling groove portion, the first coupling groove is inserted into the hinge shaft is fixed; And And a second coupling groove formed on an upper side of the first coupling groove to fix the support member. delete The method of claim 1, wherein the support member, A coupling part inserted into and fixed to the coupling groove; And A support portion having the same curvature as the inner circumferential surface of the installation space portion so as to support the outer surface of the internal gear assembly and protruding from the coupling portion; Start motor comprising a. The method of claim 3, wherein The support member, the start motor further comprises a gripping portion protruding from the upper end of the coupling portion. The method of claim 1, wherein the internal gear assembly, A ring gear in which the planetary gear is meshed therein; A ring gear supporter coupled to the ring gear and inserted into an installation space of the front housing so that rotation of the ring gear is restricted; And A damper part provided between the ring gear and the ring gear supporter to be in contact with the ring gear so as to alleviate an impact acting on the ring gear through the planetary gear; Start motor comprising a. The method of claim 5, wherein the damper portion, A main damper for alleviating the shock generated when the planetary gear rotates in one direction; And An auxiliary damper for mitigating an impact generated when the planetary gear rotates in the other direction; Start motor comprising a. The method of claim 6, The main damper and the auxiliary damper, the start motor, characterized in that different sizes. The method of claim 6, The main damper is formed larger than the auxiliary damper. The method of claim 6, wherein the main damper and the auxiliary damper, A fixed pole supported by the ring gear supporter; A movable pole supported by the ring gear; And A body connecting the fixed pole and the movable pole; Start motor comprising a. The method of claim 9, The moving pole is a start motor, characterized in that the height is formed equal to or smaller than the height of the fixed pole. The method of claim 9, The fixed pole and the movable pole is a start motor, characterized in that the height is formed larger than the height of the body.

Images