JP5178147B2 - Feeder lead-out structure for marine propulsion motors - Google Patents

Description

  The present invention relates to a power feed line drawing structure for a motor for a marine propulsion device that is suitable for use in a power trim tilt device such as an outboard motor.

  Conventionally, as described in Patent Document 1, when a power trim tilt device for an outboard motor is mounted on a hull, the power supply line drawn from the motor does not interfere with the wall of the hull or the movable portion of the outboard motor. Therefore, it is necessary to pull out the power supply line so as to reduce the amount of extension around the motor. It is also necessary to prevent water such as seawater from entering the motor drawer.

In view of this, in the feed line drawing structure of the motor described in Patent Document 1, a bracket is coupled to the lower end of the dome-shaped cylindrical housing, and a grommet is inserted into an insertion hole provided in the bracket, and the feed line houses the grommet. A feed wire that extends in a direction perpendicular to the axis of the wire and is drawn outward and bent in a direction along the axis of the housing outside the grommet extends upward along the outer surface of the housing. And the holding member which hold | maintains the electric wire pulled out from the grommet and extending along the outer surface of the housing is clamped between the mating surfaces of the housing and the bracket.
JP-A-6-16635

  In order to hold the power supply line extending along the outer surface of the housing, a holding member as a dedicated component is sandwiched between the mating surfaces of the housing and the bracket. For this reason, the number of parts for holding the power supply line is increased, and it is necessary to attach / remove the holding member when the power supply line is repeatedly attached to and detached from the motor, so that the motor is not easily assembled. I need it.

An object of the present invention is to secure a sealing function for a power supply line by a grommet inserted into a bracket and simplify a power supply line extending along the outer surface of a housing in a power supply line drawing structure of a motor for a marine vessel propulsion device. To hold on.

According to the first aspect of the present invention, a bracket is coupled to the lower end of the cylindrical housing, a grommet is inserted into an insertion hole provided in the bracket, and the feed line penetrates the grommet in a direction perpendicular to the axis of the housing. Te is drawn outward, in the power supply line lead structure of the motor for marine propulsion device feed line which is bent in a direction along the axis of the housing on the outside is extended upward along the outer surface of the housing of the grommet, the grommet a guide portion for holding the pulled out the feed line to removably its pull-out direction immediately before the bent portion, provided with integrally molded to the lower side of the housing, said feed line extending along the outer surface of the housing The clamp part which hold | maintains so that attachment or detachment is possible is integrally formed in the outer surface of a housing, and is provided.

  According to a second aspect of the present invention, in the first aspect of the present invention, the hook portion is further provided on the outer surface of the housing, and the hook portion is formed in a groove shape so as to open in the circumferential direction of the housing. It is a thing.

(Claim 1)
(a) When the feed line is pulled out outward through the grommet inserted into the bracket in a direction perpendicular to the housing axis, it is integrated with the lower end of the housing when bent in the direction along the housing axis. The formed guide portion holds the power supply line drawn from the grommet in the drawing direction immediately before the bent portion. Accordingly, the bent power supply line is held by the guide part and does not deform the grommet, and a sealing function by the grommet of the lead-out part from the bracket of the power supply line can be ensured.
(b) A feed line extending upward along the outer surface of the housing is detachably held by a clamp part integrally formed on the outer surface of the housing. Since the clamp part is integrally formed with the housing, the number of parts is not increased, the motor is easily assembled when the power supply line is repeatedly attached to and detached from the motor, and spare parts for maintenance and replacement are not required.

(Claim 2)
(c) A hook portion is provided on the outer surface of the housing, and a clamp portion is formed in the hook portion so as to form a groove and open in the circumferential direction of the housing. Therefore, the power supply line extending to the outer surface of the housing can be easily engaged with and detached from the groove-shaped clamp portion of the hook portion from the circumferential direction of the housing.

  1 is a plan view showing the motor, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2 is a view taken along the line VV of the housing of FIG. 2, FIG. 6 is a view taken along the line VI-VI of the bracket of FIG. 2, and FIG. 7 shows a wiring state of the power supply line to the bracket. Fig. 9 is a plan view, Fig. 8B is a side view, Fig. 8 is a perspective view showing a feed line drawing structure, and Fig. 9 is a side view showing a feed line drawing structure.

  1 to 9 show a DC motor 10 that drives a hydraulic pump of an outboard motor power trim tilt device. As shown in FIGS. 1 to 4, the motor 10 is configured by connecting a disc-shaped synthetic resin bracket 12 to the lower end of a cylindrical synthetic resin housing 11. Flange 11A is provided at a plurality of locations (three locations in this embodiment) on the outer periphery of the lower end of housing 11, and flange 12A is provided on the outer periphery of bracket 12 so as to face flange 11A of housing 11. In the motor 10, the flange 11 </ b> A, 12 </ b> A of each of the housing 11 and the bracket 12 is a set screw 14 in a state where the lower end opening of the housing 11 is fitted to the upper end outer periphery of the bracket 12 via the O-ring 13. The housing 11 and the bracket 12 are integrated by being combined. In the motor 10 in an integrated state of the housing 11 and the bracket 12, the bracket 12 is arranged on a support body (not shown), and bolts inserted into bolt insertion holes provided in the flanges 11A and 12A are screwed to the support body. To wear.

  The motor 10 is fixedly provided with an arcuate yoke 21 made of magnetic metal on the inner periphery of the cylindrical portion of the housing 11, and each arcuate shape along a plurality of positions (four positions in this embodiment) on the inner periphery of the yoke 21. The magnets 22 are fixedly arranged on the inner periphery of the yoke 21 with a space therebetween.

  The motor 10 arranges the rotor 23 on the central axis. One end of the rotating shaft 24 of the rotor 23 is supported by a bearing 25 provided on the top surface blocking portion of the housing 11, and the other end of the rotating shaft 24 is supported by a bearing 26 provided on the bracket 12, and a seal member 27. Is sealed. A commutator 28 is provided near the bracket 12 of the rotor 23.

  The motor 10 is provided with brush holders 31 at a plurality of circumferential positions (four positions in the present embodiment) surrounding the commutator 28 in the bracket 12, and holds the brushes 32 in the brush holders 31. Each brush 32 is urged in the radial direction passing through the center of the commutator 28 by the urging force of the spring 33 that is contracted between the brackets 12, is slidably guided by the brush holder 31, and is in sliding contact with the commutator 28.

  The motor 10 has a brush lead wire 34 connected to each brush 32. In the present embodiment, two brushes extending from the two brushes 32 located on the first diameter line of the first and second diameter lines that pass through the center of the commutator 28 and are orthogonal to each other. The lead wire 34 is connected to one terminal 35 </ b> A of the connector 35 and is connected to a power supply line 40 (41) connected to the other terminal 35 </ b> B of the connector 35. The other two brush lead wires 34 extending from the other two brushes 32 located on the second diameter line are connected to one terminal 36A of the connector 36 with the breaker, and the other terminal 36B of the connector 36 is connected. It is connected to the feeder 40 (42) connected to (the breaker 37 is interposed between the terminal 36A and the terminal 36B).

  The bracket 12 includes an intermediate portion of the long brush lead wire 34 of the two brush lead wires 34 connected to the connector 35, and the two brush lead wires 34 connected to the connector 36. A fixing groove 38 for inserting and holding the intermediate portion of the long brush lead wire 34 is provided. Further, the bracket 12 includes a fixing groove 39 for inserting and holding an intermediate portion of the power supply line 40 (41, 42). The housing 11 also holds down the pressing protrusion 15 that holds the brush lead wire 34 and the power supply line 40 held in the fixing grooves 38 and 39 from above and prevents the breaker 37 inserted in the bracket 12 from above. A pressing projection 16 is provided to prevent it from coming off.

  Hereinafter, the lead-out structure of the feeder line 40 (41, 42) in the motor 10 will be described. The power supply line 40 needs to be drawn out from the motor 10 without causing intrusion of water such as drainage into the motor 10, and the drawn power supply line 40 interferes with the wall of the hull and the movable part of the outboard motor. It is necessary to reduce the amount of protrusion to the periphery of the motor 10 so as not to cause the problem.

  In the motor 10, the grommet 50 is lightly press-fitted into an insertion hole 51 that is recessed in a direction orthogonal to the central axis of the housing 11 on the outer surface of the bracket 12. In this embodiment, as shown in FIGS. 3 and 7, a long hole-like insertion hole 51 that is concave with respect to the outer surface of the bracket 12 is provided, and the feeder wire 40 is connected to the motor 10 on the bottom surface of the insertion hole 51. An insertion hole 52 is formed through the inside and outside. In this embodiment, two insertion holes 52 and 52 corresponding to the two power supply lines 41 and 42 are formed. In the present embodiment, the grommet 50 is inserted into the insertion hole 51 without using a sealing agent (or through a sealing agent).

  As shown in FIGS. 3 and 7, the power supply line 40 (41, 42) is a sealing hole 50 </ b> A provided in a direction orthogonal to the central axis of the housing 11 of the grommet 50, and in this embodiment, two power supply lines 41. , 42 is passed through the two sealing holes 50A, 50A and drawn out from the inside of the motor 10. The feed lines 40 (41, 42) drawn out from the motor 10 are in the direction along the central axis of the housing 11 (the direction toward the top surface side of the housing 11) at the outer bent portion 40A that protrudes from the sealing hole 50A of the grommet 50. ) And is extended upward along the outer surface of the housing 11 toward the top surface.

  At this time, as shown in FIGS. 3, 4, 8, and 9, the motor 10 feeds the power supply lines 40 (41, 42) drawn from the grommets 50 inserted into the insertion holes 51 of the bracket 12. A guide portion 61 that is detachably held in the pull-out direction is provided integrally with the lower end side of the housing 11 immediately before the bent portion 40A that bends in the direction along the central axis of the housing 11.

  Specifically, it is a part of the outer surface of the cylindrical portion of the housing 11 in the circumferential direction, and is on the side of the grommet 50 that is inserted in the insertion hole 51 of the bracket 12 from the middle to the lower end along the axial direction. A guide portion 61 having a downwardly extending portion 60A which has a downwardly extending portion 60A which has a rectangular plate-like shape and extends downward and forms a groove shape in the protruding portion 60 and opens downward, in this embodiment, two power supply lines 41 , 42 corresponding to the two guide portions 61, 61 are provided. When the housing 11 is fitted to the bracket 12, each guide portion 61 corresponds to each sealing hole 50A of the grommet 50, and the upper end of the groove of each guide portion 61 is formed in an arc shape that matches the upper arc of each sealing hole 50A. To do. As a result, the power supply lines 40 (41, 42) drawn out from the grommet 50 are held in a straight shape in the drawing direction by the thickness of the overhanging portion 60, and are subjected to the bending restoring behavior force generated at the bending portion 40A. Does not deform.

  The overhanging portion 60 covers the outer end face of the grommet 50 so as to block the grommet 50 from the insertion hole 51. In this embodiment, the outer surface around the insertion hole 51 of the bracket 12 in which the insertion hole 51 of the grommet 50 is recessed is processed into a flat shape (FIG. 7). And the range which faces the outer surface around the insertion hole 51 of the bracket 12 which protrudes below from a part of circumferential direction of the annular lower end part of the housing 11 fitted to the upper end outer peripheral part of the bracket 12 The inner surface of the overhanging portion 60 facing the outer surface around the insertion hole 51 of the bracket 12 is processed into a flat shape in contact with the outer surface around the insertion hole 51 (FIGS. 3 and 8). As a result, the overhanging portion 60 covers the outer end face of the grommet 50 inserted into the insertion hole 51 of the bracket 12 so as to close the entire surface, and prevents the grommet 50 from coming off the insertion hole 51.

  According to the present embodiment, the provision of the overhanging portion 60 and the guide portion 61 on the housing 11 provides the following operational effects.

  (a) The feed line 40 (41, 42) passes through the grommet 50 inserted in the bracket 12 in a direction perpendicular to the axis of the housing 11 and is drawn outward, and then bent in a direction along the axis of the housing 11 In doing so, the guide portion 61 integrally formed on the lower end side of the housing 11 holds the power supply line 40 (41, 42) drawn out from the grommet 50 in the drawing direction immediately before the bent portion 40A. As a result, the bent power supply line 40 (41, 42) is held by the guide part 61 and does not deform the grommet 50, and the sealing function by the grommet 50 of the lead-out part from the bracket 12 of the power supply line 40 (41, 42) is achieved. It can be secured.

  (b) The lower end portion of the housing 11 has a downward projecting portion 60 projecting to the grommet 50 side, and the projecting portion 60 is provided with a guide portion 61 that forms a groove shape and opens downward. Therefore, when the bracket 12 is attached to and detached from the lower end of the housing 11, the groove-shaped guide portion 61 provided in the downward projecting portion 60 of the housing 11 can be attached to and detached from the power supply line 40 (41, 42) drawn from the grommet 50 from above. .

  (c) The overhanging portion 60 of the above (b) covers the outer end face of the grommet 50 and prevents the grommet 50 from coming off from the insertion hole 51. Therefore, when the bracket 12 is attached to and detached from the lower end of the housing 11, the overhanging portion 60 of the housing 11 covers the outer end surface of the grommet 50, and the grommet 50 can be prevented from coming off immediately and fixed easily.

  Further, as shown in FIGS. 1, 3, 8, and 9, the motor 10 is pulled out from the grommet 50 inserted into the insertion hole 51 of the bracket 12 and bent in a direction along the central axis of the housing 11. A clamp portion 71 that holds the power supply wires 40 (41, 42) extending upward along the outer surface of the housing 11 in a detachable manner in the upward extending direction after being bent at the portion 40A is provided on the outer surface of the housing 11. Provided by integral molding.

  Specifically, it has a hook portion 70 that protrudes from an intermediate portion along the axial direction of the outer surface of the cylindrical portion of the housing 11 (in this embodiment, the upper end portion of the overhang portion 60 described above), and the hook portion 70 has a groove shape. A clamp portion 71 having a lateral opening 71A that opens in the circumferential direction of the outer surface of the housing 11 is provided. The feed lines 40 (41, 42) are inserted into the clamp part 71 from the lateral opening 71A of the hook part 70, and in this embodiment, the two feed lines 41, 42 are the hook part 70 and the outer surface of the housing 11 (this embodiment). In the example, it is held side by side with the surface of the upper end portion of the overhang portion 60.

  According to the present embodiment, the hook portion 70 and the clamp portion 71 are provided in the housing 11, thereby providing the following operational effects.

  (a) The feeder lines 40 (41, 42) extending upward along the outer surface of the housing 11 are detachably held by a clamp portion 71 integrally formed on the outer surface of the housing 11. Since the clamp part 71 is formed integrally with the housing 11, the number of parts is not increased, and the assembly of the motor 10 when the power supply lines 40 (41, 42) are repeatedly attached to and detached from the motor 10 is good. No parts are required.

  (b) A hook portion 70 is provided on the outer surface of the housing 11, and a clamp portion 71 is formed in the hook portion 70 so as to form a groove shape and open in the circumferential direction of the housing 11. Accordingly, the power supply lines 40 (41, 42) extending to the outer surface of the housing 11 can be easily engaged with and detached from the groove-shaped clamp portion 71 of the hook portion 70 from the circumferential direction of the housing 11.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. It is included in the present invention.

FIG. 1 is a plan view showing a motor. FIG. 2 is a sectional view taken along line II-II in FIG. FIG. 3 is a sectional view taken along line III-III in FIG. FIG. 4 is a bottom view of the motor. FIG. 5 is a view taken along the line VV of the housing of FIG. FIG. 6 is an arrow view taken along the line VI-VI of the bracket of FIG. 7A and 7B show a wiring state of the power supply line to the bracket, where FIG. 7A is a plan view and FIG. 7B is a side view. FIG. 8 is a perspective view showing a lead-out structure of the feeder line. FIG. 9 is a side view showing a lead-out structure of the feeder line.

Explanation of symbols

10 Motor 11 Housing 12 Bracket 40, 41, 42 Feed line
40A Bending part 50 Grommet 51 Insertion hole
61 Guide part 70 Hook part 71 Clamp part

Claims (2)

A bracket is connected to the lower end of the cylindrical housing,
Grommets are inserted into the insertion holes provided in the bracket,
The feed line passes through the grommet in a direction perpendicular to the axis of the housing and is drawn outward.
In the feed line drawing structure of the motor for a marine vessel propulsion motor in which the feed line bent in the direction along the axis of the housing outside the grommet extends upward along the outer surface of the housing.
A guide portion is provided on the lower end side of the housing, which is integrally formed on the lower end side of the housing, so that the feeding line drawn from the grommet is detachably held in front of the bent portion in the pulling direction.
A feed line drawing structure for a motor for a marine propulsion device, wherein a clamp portion for detachably holding the feed line extending along the outer surface of the housing is formed integrally with the outer surface of the housing. A hook portion on the outer surface of the housing;
The power supply line drawing structure of the motor for marine propulsion devices according to claim 1, wherein the hook portion is provided with the clamp portion having a groove shape and opening in a circumferential direction of the housing.

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