JP2012153195A - Engine mount structure for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an engine mount structure for a vehicle restoring the support height of an engine side member and preventing the occurrence of abnormal noises, with simple operations.SOLUTION: The engine mount structure includes: the engine side member 1 fixed to an engine A; an anti-vibration member C fixed to a vehicle body; a height adjusting member 6 slidably and movably attached between the engine side member and the anti-vibration member; and a fixing bolt 7 which can fix the engine side member on the upper surface of the anti-vibration member with placing the height adjusting member therebetween. An operation bolt 11 which can slide and move the height adjusting member is inserted into a bolt inserting hole 12 formed through the height adjusting member, and screwed into a female screw hole 13 of the engine side member in freely screwing manner. An engine side sliding part 14a which is in contact with the engine side member of the height adjusting member, and an anti-vibration member side sliding part 15a which is in contact with the anti-vibration member C of the height adjusting member, are provided with more spacing each other in the vertical direction as the operation bolt 11 comes to the upstream side in the sliding and moving direction of the height adjusting member.

Description

  The present invention relates to an engine mount for a vehicle comprising an engine side member fixed to an engine, a vibration isolating member fixed to a vehicle body, and a fixing bolt capable of fixing the engine side member to an upper surface side of the vibration isolating member. Concerning structure.

In the above-described vehicle engine mount structure, the weight of the engine is received by the vehicle body via the engine side member and the vibration isolation member. May decrease.
If the support height of the engine-side member is lowered, for example, the engine-side member may come into contact with the vehicle-side member during idling operation of the engine, and noise or the like may be generated.
In the above-described vehicle engine mount structure, conventionally, when the support height of the engine-side member is low, the support height cannot be recovered unless the anti-vibration rubber and the engine mount are replaced (for example, Patent Documents). 1).

JP 2007-326523 A

For this reason, in order to recover the support height with respect to the vehicle body of an engine side member, there exists a possibility that an enormous effort and labor may be required.
The present invention has been made in view of the above circumstances, and it is possible to recover the support height of the engine-side member with respect to the vehicle body by a simple operation without exchanging the vibration-proof rubber or the engine mount, thereby generating abnormal noise or the like. It is an object of the present invention to provide a vehicle engine mount structure that can be prevented.

  The characteristic configuration of the present invention includes an engine side member fixed to the engine, a vibration isolation member fixed to the vehicle body, and a height that is slidably mounted between the engine side member and the vibration isolation member. An operation bolt capable of slidingly moving the height adjustment member is provided with an adjustment member and a fixing bolt capable of fixing the engine side member to the upper surface side of the vibration isolation member with the height adjustment member interposed therebetween. The engine-side member of the height adjustment member is inserted into a bolt insertion hole formed through the height adjustment member, and is screwed into a female screw hole formed in the engine-side member so as to be freely screwed. An engine-side sliding portion that contacts the vibration-proofing member and a vibration-proofing member-side sliding portion that contacts the vibration-proofing member of the height adjustment member are closer to the upper side in the sliding movement direction of the height-adjusting member by the operation bolt. Provided vertically apart from each other It lies in the fact that.

The engine mount structure for a vehicle having this configuration has a height adjustment member that is slidably mounted between the engine side member and the vibration isolation member, and the engine side member with the height adjustment member interposed therebetween. An operation bolt having a fixing bolt that can be fixed to the upper surface side of the member and capable of slidingly moving the height adjustment member is inserted into a bolt insertion hole formed in the height adjustment member so as to pass through the engine side member. The formed female screw hole is screwed so as to be freely screwed.
For this reason, by loosening the fixing of the engine side member to the vibration isolating member by the fixing bolt and tightening the operation bolt into the female screw hole formed in the engine side member, the height adjusting member is connected to the engine side member and the vibration isolating member. Can be slid and moved.

In addition, the vehicle engine mount structure of this configuration includes an engine-side sliding portion that contacts the engine-side member in the height adjustment member, and a vibration-proof member-side sliding portion that contacts the vibration-proof member in the height adjustment member. The height adjustment member by the operation bolt is provided so as to be separated from each other in the vertical direction toward the upper side in the sliding movement direction.
For this reason, the engine side member is pushed up as the height adjusting member is slid relative to the engine side member and the vibration isolation member.
Therefore, with the vehicle engine mount structure of this configuration, even if the support height of the engine side member with respect to the vehicle body is lowered, the fixing bolts can be loosened and the operation bolts can be With a simple operation of tightening, the support height can be restored and the occurrence of abnormal noise or the like can be prevented.

It is a front view which shows the support structure of an engine. It is a top view which shows the support structure of an engine. 1 shows a vehicle engine mount structure according to the present invention, in which (a) is a plan view, (b) is a sectional view taken along line IIIb-IIIb in FIG. 3 (a), and (c) is a sectional view taken along line IIIc-IIIc in FIG. FIG. (A) is a side view which shows a height adjustment member, (b) is an exploded perspective view which shows a height adjustment member and an engine side member (bracket). It is a cross-sectional side view which shows the state in which the support height with respect to the vehicle body of the engine side member (bracket) became low. It is a cross-sectional side view which shows the method of recovering the support height with respect to the vehicle body of an engine side member (bracket). The state where the support height with respect to the vehicle body of the engine side member (bracket) is restored is shown, (a) is a plan view, (b) is a sectional view taken along line VIIb-VIIb in FIG. 7 (a), and (c) is FIG. It is a VIIc-VIIc line sectional view in a). It is a side view which shows the engine mount structure for vehicles of 2nd Embodiment. It is a side view explaining the upward movement of the engine side member (bracket) in 2nd Embodiment. It is a section side view showing the engine mount structure for vehicles of a 3rd embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
1 and 2 show a support structure for an engine A of a laterally mounted FF type passenger car. A torque converter A1 and a transmission case A2 are integrally connected to the engine A. FIG.

Each of the lateral side portion of the engine A and the lateral side portion of the transmission case A2 is supported by a subframe B1, which is a part of the vehicle body B, through engine mounts C and D fixed to the vehicle body B.
A torque rod B3 is connected across the lower part of the engine A (torque converter A1) and the front suspension member B2.

  As shown in FIGS. 3 and 4, the engine mount C that supports the lateral side portion of the engine A is fixed by extending horizontally from the engine A toward the lateral outer side in the vehicle engine mount structure according to the present invention. A plate-like bracket (an example of an engine side member) 1 is supported in an anti-vibration manner.

  The engine mount C is mounted between the engine side mounting bracket 2 to which the bracket 1 is fixed, the frame side mounting bracket 3 to be fixed to the subframe B1, and the engine side mounting bracket 2 and the frame side mounting bracket 3. The anti-vibration member is provided with an anti-vibration rubber 4.

  The engine-side mounting bracket 2 is embedded and fixed by being embedded in a vibration-proof rubber 4 and a cylindrical mounting shaft portion 2a having a substantially horizontal fixing surface 5 that forms the upper surface of the vibration-proof member (engine mount) C. A downwardly truncated cone-shaped fixed shaft portion 2b is provided concentrically.

The frame-side mounting bracket 3 is formed in a bottomed cylindrical shape integrally including a circular bottom plate 3a and a cylindrical member 3b, and the bottom plate 3a is fixed to the subframe B1.
The anti-vibration rubber 4 has a thick cross-sectional shape that is inclined so that the outer peripheral side is lower than the inner peripheral side, and is formed in a circular ring shape in a plan view, and the outer peripheral side is bonded to the inside of the cylindrical member 3b. A buffer liquid 4a is sealed between the anti-vibration rubber 4 and the bottom plate 3a.

  Between the bracket 1 and the vibration isolating member C, specifically, between the bracket 1 and the fixing surface 5 of the engine side mounting bracket 2, a wedge-shaped metal height adjusting member 6 is attached to the engine A in a side view. A fixing bolt 7 that is mounted so as to be slidable toward the adjacent side and that can fix the bracket 1 to the upper surface side of the vibration isolation member C with the height adjusting member 6 interposed therebetween is provided.

The fixing bolt 7 is inserted into a fixing bolt insertion hole 8 penetratingly formed in the bracket 1 and tightened into a fixing bolt female screw hole 9 formed concentrically with the mounting shaft portion 2a. Is fixed to the fixing surface 5.
Since the fixing bolt 7 includes the fitting shaft portion 7 a that is fitted to the inner peripheral surface of the fixing bolt insertion hole 8, the movement in the bolt radial direction with respect to the bracket 1 is reliably restricted.

  At the upper end of the cylindrical member 3b, there is provided a stopper 10 having a stopper surface 10a for restricting the downward movement of the bracket 1 by contact with the bracket 1 having a low support height with respect to the vehicle body by the vibration isolating member C. It is.

The bracket 1 is screwed with a pair of operation bolts 11 that can be slid and moved toward the side close to the engine A of the height adjusting member 6.
The operation bolt 11 is inserted into an operation bolt insertion hole 12 penetratingly formed in the height adjusting member 6 and screwed into an operation bolt female screw hole 13 formed in the bracket 1 so as to be capable of screwing. .

  The sliding portion where the height adjusting member 6 and the bracket 1 slide relative to each other is the sliding movement direction indicated by the arrow f of the height adjusting member 6 by the screwing operation of the operation bolt 11 (sliding toward the side close to the engine A). Flat inclined sliding portions 14a and 14b that are separated from the fixed surface 5 toward the upper side in the moving direction) are formed on the height adjusting member 6 and the bracket 1, respectively.

  The sliding portion where the height adjusting member 6 and the vibration isolating member C slide relative to each other is a plane parallel to the sliding movement direction f of the height adjusting member 6 by the screwing operation of the operation bolt 11, that is, the height adjusting member. 6 and the fixed surface 5 (15b) of the vibration isolating member C are provided so as to slide relative to each other.

  Therefore, the engine-side sliding portion (inclined sliding portion) 14a that contacts the bracket 1 in the height adjustment member 6 and the vibration-proof member-side sliding portion (height that contacts the vibration-proof member C in the height adjustment member 6). The lower surface 15a of the adjusting member 6 is provided so as to be separated from each other in the vertical direction toward the upper side of the sliding movement direction f of the height adjusting member 6 by the screwing operation of the operating bolt 11 into the female screw hole 13.

The height adjustment member 6 is formed with a long hole-like fixing bolt insertion long hole 16 and a pair of left and right operation bolt insertion holes 12 that penetrate along the sliding movement direction f of the height adjustment member 6. Yes.
The operation bolt insertion hole 12 is formed in the shape of a long hole in the axial direction of the fixing bolt 7 so as to penetrate in the horizontal direction, and is spaced apart from the fixing bolt insertion long hole 16 to the left and right.

FIG. 3 shows a state in which the bracket 1 is supported at a predetermined support height with respect to the vehicle body, and the height adjusting member 6 is mounted between the bracket 1 and the vibration isolating member C, leaving a sliding movement allowance. Has been.
For this reason, the fixing bolt 7 is inserted into the side near the engine A of the fixing bolt insertion long hole 16 and screwed into the female screw hole 9 of the mounting shaft portion 2a. The operation bolt 11 is inserted into the operation bolt. The hole 12 is inserted into the side close to the mounting shaft portion 2 a and is screwed into the female screw hole 13 of the bracket 1.

FIG. 5 shows a state in which the support height of the bracket 1 with respect to the vehicle body is lowered due to the secular change of the vibration-proof rubber 4, and a procedure for recovering the support height from this state will be described.
As shown in FIG. 6, after loosening the fixing bolt 7 so as to allow the bracket 1 to move upward, the bracket 1 is adjusted in height by screwing the operating bolt 11 into the female screw hole 13. The member 6 is pushed up and moves up.

  As shown in FIG. 7, by tightening the operating bolt 11 until it comes into contact with the upper peripheral surface of the operating bolt insertion hole 12, the bracket 1 is moved up to a predetermined height, and the fixing bolt 7 is tightened. The supporting height of the bracket 1 with respect to the vehicle body is restored.

  In the first embodiment, since the inclined sliding portions 14a and 14b are formed on flat inclined surfaces, there is no need even if the support height of the bracket 1 with respect to the vehicle body due to secular change of the vibration isolating rubber 4 is different. Support height can be restored in stages.

[Second Embodiment]
8 and 9 show another embodiment of the present invention.
In the present embodiment, along with the sliding movement of the height adjusting member 6 by the screwing operation of the operation bolt 11, the inclined sliding portions 14a and 14b formed on the height adjusting member 6 and the bracket 1 respectively. A plurality of latching claws 17a and 17b (see FIG. 9) that latch each other in a ratchet manner are provided in a step shape.

  Therefore, as in the first embodiment, after loosening the fixing bolt 7 so as to allow the bracket 1 to move upward, the operation bolt 11 is screwed to the side tightened with respect to the female screw hole 13. 9, the locking claw 17 a formed on the height adjusting member 6 gets over the locking claw 17 b formed on the bracket 1, and the height adjusting member 6 is moved closer to the engine A. It moves and the bracket 1 moves up stepwise.

According to this embodiment, since the movement of the height adjusting member 6 to the side away from the engine A is prevented by the locking of the locking claws 17a and 17b, the inclined sliding portions 14a and 14b are not moved. The downward movement of the bracket 1 due to the sliding can be surely prevented.
Other configurations are the same as those of the first embodiment.

[Third Embodiment]
FIG. 10 shows another embodiment of the present invention.
In the present embodiment, the sliding portion where the height adjusting member 6 and the bracket 1 slide relative to each other is a surface parallel to the sliding movement direction f of the height adjusting member 6 by the screwing operation of the operation bolt 11, that is, the height An upper surface 18a of the height adjusting member 6 and a lower surface 18b of the plate-like bracket 1 are provided so as to slide relative to each other.

  The sliding portion where the height adjusting member 6 and the vibration isolating member C slide relative to each other is a sliding movement direction of the height adjusting member 6 by the screwing operation of the operation bolt 11 (sliding toward the side close to the engine A). (Moving and moving direction) The flat inclined sliding portions 19a and 19b that are separated from the upper surface 18a of the height adjusting member 6 toward the upper side of f are arranged on the lower surface of the height adjusting member 6 and the engine side mounting bracket 2 of the vibration isolating member C. It is formed on each of the upper surface (fixed surface 5).

  Therefore, the engine-side sliding portion (the upper surface of the height adjusting member 6) 18a that contacts the bracket 1 in the height adjusting member 6 and the vibration-isolating member-side sliding portion that contacts the vibration isolating member C in the height adjusting member 6 (The lower surface of the height adjusting member 6) 19a is provided so as to be separated from each other in the vertical direction toward the upper side of the sliding movement direction f of the height adjusting member 6 by screwing operation into the female screw hole 13 of the operation bolt 11. Yes.

  The height adjusting member 6 is provided with a flange 20 facing the end of the bracket 1, and the operation bolt 11 is inserted into a pair of left and right operation bolt insertion holes 12 formed in the flange 20. Screwed into a female screw hole 13 formed in the bracket 1.

According to the present embodiment, the height adjustment member 6 and the bracket 1 are moved up and down together with the screwing operation of the operation bolt 11, so the operation bolt insertion hole 12 is not formed in a long hole shape, The operation bolt insertion hole 12 can be easily formed.
Other configurations are the same as those of the first embodiment.

[Other Embodiments]
1. The vehicle engine mount structure according to the present invention may be provided to support a transmission case or the like that is integrally connected to the engine.
2. In the engine mount structure for a vehicle according to the present invention, the height adjusting member may be slidably mounted in the vehicle front-rear direction or may be slidably mounted in the vehicle width direction.
3. The vehicle engine mount structure according to the present invention may be provided with a single operation bolt capable of slidingly moving the height adjusting member.
4). The vehicle engine mount structure according to the present invention may be provided with a plurality of fixing bolts capable of fixing the engine side member to the upper surface side of the vibration isolating member with the height adjusting member interposed therebetween.
5. In the vehicle engine mount structure according to the present invention, a female screw hole into which an operation bolt is screwed may be formed through the engine side member.

  The present invention can be used for engine mount structures for vehicles such as passenger cars and work vehicles.

DESCRIPTION OF SYMBOLS 1 Engine side member 6 Height adjustment member 7 Fixing bolt 11 Operation bolt 12 Bolt insertion hole 13 Female screw hole 14a, 18a formed in engine side member Engine side sliding part 15a, 19a Anti-vibration member side sliding part A Engine B Body C Anti-vibration member

Claims (1)

An engine side member fixed to the engine, a vibration isolating member fixed to the vehicle body, a height adjusting member slidably mounted between the engine side member and the vibration isolating member, and the engine side A fixing bolt that can be fixed to the upper surface side of the vibration isolating member with the height adjusting member interposed therebetween,
An operation bolt capable of slidingly moving the height adjustment member is inserted into a bolt insertion hole formed in the height adjustment member so as to be screwed into a female screw hole formed in the engine side member. Screwed,
The engine-side sliding portion in contact with the engine-side member in the height adjustment member and the vibration-proof member side sliding portion in contact with the vibration-proof member in the height adjustment member are the height by the operation bolt. An engine mount structure for a vehicle that is provided so as to be spaced apart from each other in the vertical direction toward the upper side in the sliding movement direction of the adjustment member.

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