JP2016173095A - Attachment structure of engine hanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attachment structure of an engine hanger which enables improvement of attachment strength of an engine hanger (for example, a rear hanger 3) to an engine 1 while inhibiting increase in the weight and costs.SOLUTION: A rear hanger 3 has: a hook part 31 which hooks on a suspension member (for example, a chain 5); a fastening part 33 fastened to the engine side (for example, a cylinder head 1b) by a bolt 34; and a protruding part 35 which is separated from the fastening part 33, contacts with the engine side, and supports a part of a load. An elongated hole (a bolt hole 33a) into which the bolt 34 is inserted is formed in the fastening part 33. An engine side contact surface (for example, a lower inclined surface 61a of an expansion part 61 of an engine side member 6) which contacts with the protruding part 35 is located close to the rear hanger 3 at one longitudinal side (the upper side) of the elongated hole 33a and separates from the rear hanger 3 at the other side (the lower side).SELECTED DRAWING: Figure 3

Description

  The present invention relates to a mounting structure for an engine hanger that is hooked on a suspension member for suspending an engine.

  In general, when an engine mounted on an automobile or the like is removed from a vehicle body, an engine hanger is hooked on a suspension member such as a hoist hook, a chain, or a lift wire and suspended. For example, an engine lifter (engine hanger) described in Patent Document 1 is formed by welding a hook part made of a steel plate and a base part, and superimposing the base part on, for example, a gear housing on the engine side, using three bolts. It is concluded.

Japanese Patent No. 3705410

  That is, generally, an engine, a transmission, and the like have a large weight, and a considerably large load is applied to an engine hanger for suspending the engine. For this reason, in the conventional example, three locations of the base portion are fastened using three bolts, which contributes to an increase in weight and an increase in cost.

  Therefore, while it is possible to increase the strength by reducing the fastening part of the engine hanger with bolts to one place, for example, increasing the thickness of the member or overlapping the reinforcing member, Since it is not easy to perform the optimal reinforcement so as not to invite, there is also a concern of increasing the weight.

  In addition to the fastening part, it is conceivable to provide a load support part that contacts the engine side. However, in order to bring this load support part into contact with the engine side as intended, the dimensional accuracy of the engine hanger or the like is considerably increased. Must-have. This is because if the tolerance of the engine hanger or the engine side part to which the engine hanger is fastened is a general size, a gap is formed between the load support portion and the engine side, and the load cannot be supported.

  In view of such problems, an object of the present invention is to increase the mounting strength of the engine hanger to the engine while suppressing an increase in weight and an increase in cost.

  In order to achieve the above object, the present invention is directed to an engine hanger mounting structure that is hooked on a suspension member for suspending an engine. First, the engine hanger has a hook portion that is hooked on a suspension member, a fastening portion that is fastened to the engine side by a bolt, and a convex portion that is spaced apart from the fastening portion and contacts the engine side to support a part of the load. And have.

  The fastening portion of the engine hanger is formed with a bolt hole through which the bolt is inserted as a long hole, and the contact surface on the engine side that comes into contact with the convex portion of the engine hanger is one in the longitudinal direction of the long hole. The inclined surface is close to the engine hanger on the side and away from the other side.

  In addition to the engine and transmission, the drive system, etc., the above-mentioned “engine side” refers to components such as an intake system, a fuel supply system, an ignition system, auxiliary equipment such as an alternator, a fuel pump, and the like. Includes a bracket for attaching to the engine or the like, and has only a predetermined strength and is fixed to the engine or the like with a predetermined attachment strength.

  With the mounting structure described above, the engine hanger is fastened to the engine side by a bolt to support the load of the engine, transmission, etc., and a convex part provided apart from the fastening part contacts the engine side. , Comes to support a part of the load. That is, the mounting strength of the engine hanger can be increased by distributing the load of the engine or the like not only to the fastening portion but also to the convex portion.

  The bolt hole of the fastening portion is a long hole, the contact surface on the engine side that contacts the convex portion is an inclined surface, and the convex portion is adjusted by adjusting the position of the engine hanger in the longitudinal direction of the long hole. The part and the contact surface can be brought close to or away from each other. Therefore, even if the dimensional accuracy of the engine hanger or the like is not particularly high, the convex portion can be brought into contact with the engine side as intended, and a part of the load can be supported.

  Preferably, the surface of the convex part of the engine hanger is constituted by a curved surface whose curvature changes continuously, for example, an arc surface, and in this way, the contact state between the convex part and the contact surface on the engine side is stabilized. Easy to make. Further, even if a part of the load of the engine or the like is received, stress concentration is unlikely to occur in the convex portion, which is advantageous in preventing breakage.

  More preferably, the bolt hole in the fastening portion of the engine hanger is a long hole that is long in the vertical direction, and the engine-side contact surface that comes into contact with the convex portion is closer to the engine hanger toward the upper side and an inclined surface farther away from the lower side. It is to be. By so doing, the convex portion comes into contact with the contact surface from obliquely below, so that the load can be supported more reliably. Note that the contact surface on the engine side may also be configured by a curved surface whose curvature changes continuously, like the convex portion.

  The engine hanger according to the present invention has a bolt hole of a fastening part fastened to an engine or the like as a long hole, and adjusts the position in the longitudinal direction thereof, whereby the convex part of the engine hanger and the contact surface (inclined surface) on the engine side Therefore, even if the dimensional accuracy is not particularly increased, a part of the load can be suitably supported by bringing the convex portion into contact with the engine side as intended. Thereby, the mounting strength of the engine hanger can be increased while suppressing an increase in weight and cost.

It is a figure which shows typically the state which suspended the engine and the transmission with the chain seeing from the front of the motor vehicle. It is a figure which expands an engine hanger and shows a mounting structure, Comprising: (a) The front view which cuts off one part seeing from the back of a motor vehicle, (b) The side view seen from the left side of a motor vehicle. It is a perspective view which shows the attachment structure of an engine hanger. FIG. 3 is a view corresponding to FIG. 2A when the position of the engine hanger is increased. FIG. 3 is a view corresponding to FIG. 2A when the position of the engine hanger is lowered. FIG. 2A is a view corresponding to FIG. 2A according to another embodiment in which the shape of the engine-side contact surface is different.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, the present invention is applied to a rear engine hanger 3 (hereinafter referred to as a rear hanger 3) close to the transmission 4 out of two engine hangers 2 and 3 of the front and rear of the engine 1 mounted on the automobile. The case will be described. In the following, for convenience of explanation, the front, rear, left, and right sides of the vehicle body are simplified and simply referred to as front, rear, left, and right.

  FIG. 1 shows a state in which the engine 1 and the transmission 4 are suspended by a hoist (not shown), for example, as viewed from the front of the automobile. As schematically shown in the figure, the engine 1 has a cylinder head 1b fastened to an upper portion of a cylinder block 1a and a head cover 1c attached to the upper portion, while an oil pan 1d is attached to the lower portion of the cylinder block 1a. It is attached.

  As shown in FIG. 1, the front engine hanger 2 (hereinafter referred to as the front hanger 2) is disposed near the right end of the rear surface of the cylinder head 1b. The front hanger 2 is made of a steel plate, and like the rear hanger 3 described later, an upper J is provided with an inverted J-shaped hook 2a, while a lower end 2b (shown by a broken line) is not shown. The bolt is fastened to the rear surface of the cylinder head 1b.

  The rear hanger 3 is disposed on the left side surface of the cylinder head 1b. As shown in FIGS. 2 and 3, the rear hanger 3 is formed by bending a steel plate or the like. The upper half of the rear hanger 3 has an end of a chain 5 (suspension member) connected to a hoist or a chain block. An inverted J-shaped hook portion 31 opened downward is provided so as to be hooked on the portion.

  On the other hand, the lower half portion of the rear hanger 3 is a rectangular plate-like base portion 32, and a rectangular piece portion 33 extending rearward from the lower portion of the rear edge portion thereof is bent to the left side to obtain a cross-section L It has a letter shape. This rectangular piece portion 33 is a fastening portion that is overlapped with the boss portion 10 of the cylinder head 1b and fastened by a bolt 34, and is hereinafter referred to as a fastening portion 33 of the rear hanger 3.

  In the present embodiment, the fastening portion 33 is formed with an oblong bolt hole 33a (an elongated hole through which the bolt 34 is inserted) that is long in the vertical direction as shown in FIG. 3, and this bolt hole 33a. A shaft portion 34 a of the bolt 34 inserted from the left side is screwed into the screw hole 10 a of the boss portion 10. Therefore, the mounting height of the rear hanger 3 to the cylinder head 1b can be adjusted in the range above and below the bolt hole 33a.

  Further, a predetermined interval (described later) is provided upward from the fastening portion 33, and the lower portion of the upper half of the rear hanger 3 protrudes rearward (in the axial direction of the bolt 34) from the rear edge. A convex portion 35 is formed. The convex portion 35 has an arc shape when viewed from the side, and an upper inclined surface 35a (symbolized only in FIG. 3) that is gradually lowered from the upper end to the rear end is fixed to the cylinder head 1b. A part of the load of the engine 1 or the like is supported by contacting the engine-side member 6 that has been made.

  The engine side member 6 is, for example, components such as an intake system, a fuel supply system, an ignition system, auxiliary machines such as an alternator and a fuel pump, and a bracket for attaching them to the engine 1 and the transmission 4. Since these have a predetermined strength and are fixed to the engine 1 or the like with a predetermined mounting strength, a part of the load is supported if they contact the convex portion 35 of the rear hanger 3 as described above. be able to.

  That is, as shown in FIG. 2, the engine-side member 6 appears on the left side of the engine-side member 6 at a predetermined distance upward from the boss portion 10 of the cylinder head 1 b to which the fastening portion 33 of the rear hanger 3 is fastened. A bulging portion 61 that bulges to the left is formed. In the illustrated example, the bulging portion 61 has an arc shape when viewed in the front-rear direction, and faces the convex portion 35 at a position slightly higher than the convex portion 35 of the rear hanger 3. The lateral width of the bulging portion 61 is generally the same as the lateral width of the fastening portion 33 of the rear hanger 3.

  More specifically, as shown in FIG. 3, the height H from the lower end of the screw hole 10 a that opens in the boss portion 10 of the cylinder head 1 b to the front end of the bulging portion 61 is a bolt that opens in the fastening portion 33 of the rear hanger 3. It is set to be substantially the same as the height h from the lower end of the hole 33a to the rear end of the convex portion 35 (H ≧ h). Therefore, if the shaft 34a of the bolt 34 is inserted through the lowest position of the bolt hole 33a and the position of the rear hanger 3 is increased, as shown in FIG. It becomes almost the same height as the front end of 61.

  On the other hand, if the shaft 34a of the bolt 34 is inserted through the uppermost position of the bolt hole 33a and the position of the rear hanger 3 is lowered, the rear end of the projection 35 is the front end of the bulging portion 61 as shown in FIG. Lower than. Then, an upper inclined surface 35a that gradually decreases from the upper end to the rear end of the convex portion 35, and a lower inclined surface 61a from the front end to the lower end of the bulging portion 61 that faces (the reference numeral is attached only to FIG. 3). Come into contact with each other.

  That is, since the lower inclined surface 61a of the bulging portion 61 is gradually retracted from the front end toward the lower end, the higher the position of the rear hanger 3, the higher the convex portion 35 becomes on the inclined surface 61a. On the contrary, as the position of the rear hanger 3 is lowered, the convex portion 35 comes away from the inclined surface 61a. Therefore, even if the dimensions of the rear hanger 3 and the engine side member 6 vary, the height of the rear hanger 3 is adjusted so that the convex portion 35 and the bulging portion 61 are brought into contact with each other, and the load of the engine 1 or the like is reduced. The part can be supported.

  Specifically, there is a normal tolerance in the dimensions of the rear hanger 3 and the engine-side member 6, and the distance between the convex portion 35 of the rear hanger 3 and the bulging portion 61 of the engine-side member 6 as shown by the phantom line in FIG. Is relatively large, the position of the rear hanger 3 can be increased to close the gap so that the convex portion 35 and the bulging portion 61 can be brought into contact with each other as shown by the solid line in FIG.

  In addition, as shown by the phantom line in FIG. 5, when the distance between the convex portion 35 and the bulging portion 61 is relatively small, they may interfere with each other, which may be an obstacle to fastening by the bolt 34. In this case, as shown by a solid line in FIG. 5, by lowering the position of the rear hanger 3, the convex portion 35 and the bulging portion 61 can be suitably brought into contact with each other. That is, the inclined surface 35a on the upper side of the convex portion 35 comes into contact with the inclined surface 61a on the lower side of the bulging portion 61 from obliquely below, thereby supporting the load more reliably.

  As described above, in the present embodiment, the rear hanger 3 is provided with the convex portion 35 spaced from the fastening portion 33, while the engine-side member 6 fixed to the cylinder head 1 b of the engine 1 is provided with the bulging portion 61. Since both are brought into contact with each other, not only the fastening portion 33 but also the convex portion 35 can disperse the load of the engine 1 and the like, and the mounting strength of the rear hanger 3 on the engine 1 side can be increased.

  Moreover, since the bolt hole 33a of the fastening portion 33 is a long hole and the height of the rear hanger 3 is adjusted, the distance between the convex portion 35 and the bulging portion 61 of the engine side member 6 can be adjusted. The convex portion 35 can be suitably brought into contact with the bulging portion 61 as described above without particularly increasing the dimensional accuracy of the rear hanger 3 and the engine side member 6. Thereby, the mounting strength of the rear hanger 3 can be increased while suppressing an increase in weight and cost.

  Moreover, in this embodiment, since the surface of the said convex part 35 is made into the circular arc surface, and the surface of the bulging part 61 of the engine side member 6 which contacts this is also made into the circular arc surface, it is easy to make both contact stably. Even if a part of the load of the engine 1 or the like is applied, stress concentration hardly occurs, which is advantageous in preventing damage to the convex portion 35 and the bulging portion 61.

-Other embodiments-
The description of the above-described embodiment is merely an example, and is not intended to limit the configuration or use of the present invention. For example, in the embodiment described above, the surface of the convex portion 35 of the rear hanger 3 and the surface of the bulging portion 61 of the engine side member 6 are both arcuate surfaces. As described above, a flat inclined surface 62 may be provided on the side surface of the engine-side member 6 so as to be close to the rear hanger 3 on the upper side and away from the lower side.

  Further, in the above embodiment, the bolt hole 33a that is long in the vertical direction is formed in the fastening portion 33 of the rear hanger 3, while the bulging portion 61 of the engine side member 6 is close to the rear hanger 3 on the upper side and on the lower side. Although the inclined surface 61a is provided so as to be far away, the present invention is not limited to this. The bolt hole formed in the fastening portion 33 of the rear hanger 3 is formed into a long hole shape that is long in an arbitrary direction. Correspondingly, the engine side member 6 is close to the rear hanger 3 on one side in the longitudinal direction of the long hole, and the other side. It is sufficient to provide an inclined surface so as to be far away.

  Further, in the above embodiment, the case where the present invention is applied to the rear hanger 3 closer to the transmission 4 of the two engine hangers 2 and 3 has been described, but the present invention may be applied to the front hanger 2, The present invention may be applied to both the front hanger 2 and the rear hanger 3.

  The present invention can increase the mounting strength of the engine hanger to the engine while suppressing an increase in weight and cost, and therefore has an excellent effect when applied to an automobile engine.

1 Engine 3 Rear hanger (Engine hanger)
31 Hook part 33 Fastening part 33a Bolt hole (long hole)
34 Bolt 35 Projection 35a Inclined surface above projection 5 Chain (Suspension member)
6 Engine side members (engine side)
61 Swelling portion 61a Inclined surface on the lower side of the bulging portion (contact surface on the engine side)

Claims (1)

An engine hanger mounting structure that is hooked on a suspension member for suspending an engine,
The engine hanger includes a hook portion that is hooked on the suspension member, a fastening portion that is fastened to the engine side by a bolt, and a convex portion that is spaced apart from the fastening portion and contacts the engine side to support a part of the load. And
The fastening portion is formed with an elongated hole through which the bolt is inserted,
The mounting surface of the engine hanger is characterized in that the contact surface on the engine side that contacts the convex portion is an inclined surface that is close to the engine hanger on one side in the longitudinal direction of the elongated hole and is separated on the other side. Construction.

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