JP4610420B2 - Mounting structure with co-rotation prevention mechanism - Google Patents

Description

  The present invention relates to a structure for mounting an automobile auxiliary machine to a chassis frame by elastic support.

  Car output is being increased to ensure sufficient output. If the output of the car is increased, the amount of heat generated by the engine naturally increases. Increasing the amount of heat generated by the engine has been dealt with by increasing the size of the radiator. Especially in large vehicles, not only the output is increased, but also various safety devices (equipped in the vehicle) are no longer larger than this. It is over the limit to install the radiator in the left and right side rails at the front end of the frame.

  In order to cope with this situation, the main radiator is mounted in the left and right side rails at the front end of the frame. In addition to this, the sub radiator is mounted on the side rail side of the frame, and the main radiator and sub radiator are used simultaneously. In order to ensure cooling performance.

  When the sub radiator is mounted on the side rail side surface of the frame, the sub radiator is elastically supported and attached to the sub radiator mounting bracket by an elastic support mechanism whose cross section is shown in FIG.

  In FIG. 11, reference numeral 20 is a sub-radiator mounting bracket, reference numerals 4A and 4B are cylindrical anti-vibration rubbers which are elastic members, reference numeral D is a support member fixed to the sub-radiator, and reference numeral E is a compression direction length setting. Collar, symbol F indicates a mounting bolt, and G indicates a mounting nut.

In the vicinity of the mounting position on the side rail side of the frame, there is a difference in tools to prevent rotation when fastening to either bolts or nuts by other equipment, the cover of the electric fan of the sub radiator, or the same air duct. There are many cases that cannot be included.
That is, in FIG. 11, if the nut G is rotated with a power wrench or the like without pressing the head of the mounting bolt F, the mounting bolt F will rotate together with the rotation of the nut G. It is necessary to hold the bolt head with a tool (such as a non-rotating wrench), but there is a cover (not shown) that protects the sub radiator, for example, above the mounting bolt F, which makes it difficult to reach the tool. .

As a detent mechanism, a pipe joint detent fitting that can eliminate the brazing process in the furnace has been proposed (see, for example, Patent Document 1).
However, in this patent document, when fixing a pipe joint composed of a ball union and a tightening bolt to a mounting portion, the bracket is used to prevent the ball union from rotating together by rotating the tightening bolt. It will not be a solution.
Japanese Utility Model Publication No. 6-51687

  The present invention has been proposed in view of the above-described problems of the prior art, and serves as a washer for an elastic support member (for example, an anti-vibration rubber). It is an object of the present invention to provide an attachment structure with a detent mechanism that can fasten an elastic support mechanism with a fastening member without being held by the screw.

  According to the present invention, two outwardly extending L-shaped members (21, 21) are attached to the side surface (3v) of the frame (3) and orthogonal to the L-shaped members (21, 21). Then, two U-shaped members (22, 22) are assembled in a cross-beam shape to constitute a sub-radiator bracket (2), and an elastic support mechanism (see FIG. 2) is formed on the U-shaped members (22, 22). 1 is provided, and the sub-radiator (1) is supported by the support members (11, 11). 22w) is provided with two upper and lower columnar vibration-proof rubbers (4A, 4B), and the horizontal lower end (11e) of the support member of the sub-radiator (1) is sandwiched between them. Part (4Ai, 4Bi) and mounting hole for supporting member 11i) is inserted with a collar (5) for setting the anti-vibration rubber (4A, 4B) to a predetermined compression thickness, and a washer (6) is attached above the upper anti-vibration rubber (4A). A mounting bolt (7) integrated with the washer (6) passes through the collar (5), and a nut (8) is screwed to the lower end thereof to attach an elastic support mechanism. (6) is a part of the seating surface (61) covering the upper surface of the anti-vibration rubber (4A) is extended, the tip is bent at a right angle to form a vertical part (63) extending downward, The vertical portion (63) is in contact with the flange (22f) of the U-shaped member (22), and serves to prevent the mounting bolt (7) from rotating when the nut (8) is tightened.

  Further, according to the present invention, two L-shaped members (21, 21) extending outward are attached to the side surface (3v) of the frame (3), and the L-shaped members (21, 21) are attached. Two U-shaped members (22, 22) perpendicular to each other are assembled in a cross beam shape to form a sub-radiator bracket (2B), and elastic support is provided on the U-shaped members (22, 22). In the mounting structure of an auxiliary machine for an automobile in which a mechanism (A part in FIG. 1) is provided and the sub-radiator (1) is supported by support members (11, 11), the elastic support mechanism includes two upper and lower elastic support mechanisms. Cylindrical anti-vibration rubber (4A, 4B) is provided, and a horizontal lower end (11e) of the support member of the sub-radiator (1) is sandwiched therebetween, and the anti-vibration rubber hollow portion (4Ai, 4Bi) and In the mounting hole (11i) of the support member, an anti-vibration gob A collar (5) for setting (4A, 4B) to a predetermined compression thickness is inserted, and a washer (6B) is provided above the upper anti-vibration rubber (4A) and integrated with the washer (6B). The formed mounting bolt (7) passes through the collar (5), and a nut (8) is screwed to the lower end thereof to attach an elastic support mechanism. The washer (6B) 4A), a part of the seating surface (61B) covering the upper surface is extended, and its tip is bent at a right angle to form a vertical part (63B) extending downward, and the tip of the vertical part (63B) is It is configured to be inserted into a rotation prevention hole (2Br) provided in the sub-radiator bracket (2B) and to prevent the mounting bolt (7) from rotating when the nut (8) is tightened.

  According to the present invention having the above-described configuration (the invention of claim 1), a part of the washer extends in the horizontal direction (61a, 61Ba), and is bent in a direction perpendicular to the surface pressed from the extended end. The surface (63, 63B) has a surface (63, 63B) that is bent in the direction perpendicular thereto, or the end of the bent surface in the plate width direction abuts a part of the accessory mounting member (2). This prevents the rotation of the mounting bolt, so that the nut (9) can be used to tighten the mounting bolt (7) in the elastic support mechanism without holding any of the members related to the mounting by the operator's hand. 8) can be securely tightened.

  In addition, since the washer (6) and the mounting bolt (7) are integrated, the mounting process can be reduced during assembly, and operations other than having a power wrench become unnecessary, so that work efficiency is improved.

  Since the washer (6) and the mounting bolt (7) are integrated, the man-hours for managing the parts can be reduced.

  When the prior art is improved, the shape of the peripheral parts such as the elastic support structure is not significantly changed, and the cost increase associated with the improved design is minimized.

  This can be applied not only to mounting the sub-radiator (1) but also to elastic support of many auxiliary machines.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a front view showing a sub-radiator mounted state, FIG. 2 is a plan view (top view), FIG. 3 is a perspective view showing the A part (elastic support mechanism) of FIG. 1, and FIG. 5 to 7 are detailed views of a washer integrated with a mounting bolt, and FIGS. 8 to 10 are detailed views of modified examples of the washer integrated with a mounting bolt.

First, in FIG. 1 and FIG. 2, sub radiator support members 11 are fixedly provided on both left and right side surfaces of the sub radiator 1.
In the illustrated example, the sub-radiator bracket 2 for mounting the sub-radiator 1 on the side surface 3v of the frame 3 is two L-shaped members attached to the frame 3 (one is omitted in FIG. 2). 2, two U-shaped members 22 assembled in a cross-beam shape so as to be orthogonal to the L-shaped member 21, and an L-shaped reinforcing member 23.

The reinforcing member 23 has a vertical portion 23v and a horizontal portion 23h, and the vertical portion 23v is a known means such that the tip of the vertical portion 23v faces downward below the vertical portion 21v of the L-shaped member 21 ( For example, it is fixed by welding.
When the sub radiator bracket 2 is attached to the frame 3, the vertical portion 21 v of the L-shaped member 21 of the sub radiator bracket 2 is in contact with the side surface 3 v of the frame 3, and the horizontal portion 23 h of the reinforcing member 23 of the sub radiator bracket 2 is the frame 3. It is attached so as to be in contact with the lower surface 3h.

  The U-shaped member 22 constituting the sub-radiator bracket 2 has a horizontally arranged web 22w in FIG. 1 and two flanges 22f extending at an end of the web 22w in a direction orthogonal to the web 22w. ing.

In the illustrated example, the elastic support mechanism described below is used at four locations (two locations are omitted in FIG. 2) to attach to the sub-radiator 1 and the sub-radiator bracket 2.
In FIG. 1, the symbol Rm indicates a main radiator.

FIG. 3 (a perspective view of FIG. 4 in a three-dimensional view) and FIG. 4 (a portion of FIG. The description will be given with reference.
3 and 4, the upper side of the web 22 w of the U-shaped member 22 of the sub-radiator bracket 2 has a lower side of the anti-vibration rubber 4 </ b> A, 4 </ b> B that is a pair of upper and lower cylindrical elastic members. Rubber 4B is placed.

  An upper anti-vibration rubber 4A is stacked above the lower anti-vibration rubber 4B with the horizontal lower end 11e of the sub-radiator support member 11 sandwiched therebetween, and the hollow portions 4Ai of the anti-vibration rubbers 4A and 4B are overlapped. A cylindrical collar 5 is inserted into the mounting hole 11 i of 4 Bi and the sub-radiator support member 11.

  The axial dimension of the collar 5 is set equal to a value obtained by adding the thickness of the sub-radiator support member 11 to the total axial height (thickness) obtained by compressing the pair of anti-vibration rubbers 4A and 4B by a predetermined amount. Has been.

  From the upper side of the upper anti-vibration rubber 4A, in the hollow portion 5i of the collar 5, a tip 7e of a shaft portion of a mounting bolt 7 integrated with a washer 6 described later is a U-shaped member 22 of the sub-radiator bracket 2. A through hole 22i formed in the web 22w projects so as to protrude, and a fastening nut 8 is fastened to the shaft end 7e with a predetermined tightening torque.

  That is, as the elastic support mechanism, when the fastening nut 8 is fastened to the mounting bolt 7 with a predetermined torque, as described above, the pair of anti-vibration rubbers 4A and 4B is compressed by a predetermined amount, and the shaft of the collar 5 is compressed. The dimension in the direction is equal to the sum of the axial heights (thicknesses) of the anti-vibration rubbers 4A and 4B at that time plus the thickness of the sub-radiator support member 11.

  Next, the integrated washer 6 and mounting bolt 7 will be described with reference to FIGS.

  In the illustrated example, the washer 6 has a circular seating surface 61 that is somewhat larger than the contact surface (circular region indicated by the two-dot chain line) with the anti-vibration rubber 4A, as shown in FIG. 6 (top view). A mounting hole 62 through which the shaft portion of the mounting bolt 7 is inserted is formed at the center of the seat surface 61.

In FIG. 6, the seat surface 61 passes through the center of the mounting hole 62, and a seat surface extension 61 a extends in the lower right direction with respect to the center line L in the left-right direction, and the tip of the seat surface extension 61 a The portion is bent in a direction perpendicular to the seat surface extension 61a and has a vertical portion 63 extending downward in FIG. The folding line is orthogonal to the center line L in the left-right direction in FIG.
3, 4, and 5 to 7 show the elastic support mechanism on the right side (A portion in FIG. 1) in FIGS. 1 and 2, but the elastic support on the left side in FIGS. 1 and 2. The mechanism is formed differently from the right elastic support mechanism.

  In the illustrated example, the washer 6 and the mounting bolt 7 are integrated by inserting the shaft portion 7s of the mounting bolt 7 into the mounting hole 62 of the washer 6, and the upper surface of the seating surface 61 of the washer 6 is located below the neck of the bolt head. This is done by fixing with a known means, for example, welding, in contact with the surface 7h.

Next, with reference to FIG. 3 and FIG. 4, a detent mechanism in the elastic support mechanism will be described.
In FIG. 3, the fastening nut 8 is set in a state where the fastening nut 8 (see FIG. 4, not shown in FIG. 3) is housed in the nut engaging portion 91 of the socket of the power wrench (impact wrench) 9, for example. The power is applied to the power wrench 9 by being screwed into the male screw at the shaft tip 7 e of the mounting bolt 7 integrated with the washer 6.

At the moment when power is applied to the power wrench 9, the surface pressure acting on the contact surfaces of the upper and lower vibration-proof rubbers 4A and 4B, the washer 6 integrated with the mounting bolt 7 and the sub-radiator support member 11 is low, so the wrench 9 rotates in the direction of the arrow Y1, and the washer 6 integrated with the mounting bolt 7 also rotates in the direction of the arrow Y2.
Eventually, since the plate end portion of the vertical portion 63 of the washer 6 comes into contact with the flange 22f of the U-shaped member 22, further rotation of the washer 6 is prevented.
Since the power wrench 9 rotates in a state where the rotation of the washer 6 is prevented, the fastening nut 8 is screwed into the mounting bolt 7 and when a proper tightening torque is applied, a limiter (torque limiter) (not shown) of the power wrench 9 is applied. The mechanism) acts to complete the fastening.

  Next, with reference to FIGS. 8-10, the washer modification 6B which integrated the mounting bolt 7 is demonstrated.

The washer 6 shown in FIGS. 5 to 7 is asymmetrical in that the seat surface extension 61a and the subsequent vertical portion 63 are asymmetric in the front view (FIG. 5) and the top view (6).
On the other hand, the washer 6B of the modified example of FIGS. 8 to 10 (the washer 6 of FIGS. 5 to 7) has a seating surface extension portion 61Ba and a vertical portion 63B following the seat surface extension portion 61B formed symmetrically.

  On the other hand, the sub-radiator bracket (not shown in its entirety) 2B is formed with a rotation prevention hole 2Br through which the seat surface extension 61Ba of the washer 6B is inserted, and the seat surface extension 61Ba is inserted into the rotation prevention hole 2Br. By doing so, the washer 6B and the mounting bolt 7 integrated with the washer 6B are prevented from rotating (corotating).

According to the mounting structure with a co-rotation prevention mechanism of the present embodiment configured as described above, the vertical portion 63 (63B) of the washer 6 (6B) or the end of the vertical surface in the plate width direction is the sub-radiator bracket 2. Since the rotation of the mounting bolt 7 is prevented by coming into contact with the flange 22f (or the insertion hole 2Br) of (2B), the elastic support mechanism does not hold any member related to the mounting by the operator's hand. The nut 8 can be securely tightened to the mounting bolt 7 using the power wrench 9.

  In addition, since the washer 6 (6B) and the mounting bolt 7 are integrated, the mounting process can be reduced and the operation efficiency other than having the power wrench 9 is not required when assembling.

  Since the washer 6 (6B) and the mounting bolt 7 are integrated, the man-hours for managing the parts can be reduced.

  When the prior art is improved, the shape of the peripheral parts such as the elastic support structure is not significantly changed, and the cost increase associated with the improved design is minimized.

  This can be applied not only to the mounting of the sub-radiator 1 but also to the elastic support of many auxiliary machines such as a main radiator and an oil cooler for power steering.

  It should be noted that the illustrated embodiment is merely an example, and is not a description to limit the technical scope of the present invention.

The front view explaining the attachment to the vehicle frame of the sub radiator in the case of implementing this invention. FIG. 3 is a top view corresponding to FIG. 2. The perspective view which represented the A section (elastic support mechanism) of FIG. 1 in three dimensions. Sectional drawing of the elastic support mechanism which concerns on embodiment of this invention. The front view of the washer which concerns on this embodiment and was integrated with the attachment bolt. FIG. 6 is a top view corresponding to FIG. 5. FIG. 6 is a side view corresponding to FIG. 5. The front view of the modification of the washer which concerns on this embodiment and was integrated with the attachment bolt. FIG. 9 is a top view corresponding to FIG. 8. The side view corresponding to FIG. Sectional drawing of the elastic support mechanism in a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Sub radiator 2 ... Auxiliary attachment member / auxiliary attachment member 3 ... Frame / side rail 4A ... Elastic member / Upper vibration-proof rubber 4B ... Elastic member / Lower vibration-proof Rubber 5 ... Collar 6, 6B ... Washer 7 ... Mounting bolt 8 ... Fastening nut 9 ... Tightening tool / Power wrench 11 ... Auxiliary machine support member / Sub-radiator support member 21 ... -L-shaped member 22 ... U-shaped member 23 ... Reinforcing member 61 ... Seat surface 63 ... Vertical portion

Claims (2)

Two L-shaped members (21, 21) extending outward are attached to the side surface (3v) of the frame (3), and two U-shaped members are orthogonal to the L-shaped members (21, 21). The sub-radiator bracket (2) is formed by assembling the letter-shaped members (22, 22) in a cross-beam shape, and an elastic support mechanism is provided on each of the U-shaped members (22, 22). ) Is supported by the support member (11, 11), the elastic support mechanism includes two upper and lower cylindrical vibration-proof rubbers on the web (22w) of the U-shaped member. (4A, 4B) are provided, and the horizontal lower end (11e) of the support member of the sub-radiator (1) is sandwiched therebetween, and the hollow portions (4Ai, 4Bi) of the vibration-proof rubber and the mounting holes ( 11i) includes anti-vibration rubber (4A A collar (5) for setting 4B) to a predetermined compression thickness is inserted, and a washer (6) is attached above the upper anti-vibration rubber (4A) and integrated with the washer (6). A mounting bolt (7) passes through the collar (5), and a nut (8) is screwed to the lower end thereof to attach an elastic support mechanism. The washer (6) is made of an anti-vibration rubber (4A). A part of the seating surface (61) covering the upper surface of the upper surface of the upper surface of the upper surface is extended, a tip portion thereof is bent at a right angle to form a vertical portion (63) extending downward, and the vertical portion (63) is formed in the U-shape. An attachment structure with a detent mechanism, which is configured to abut against the flange (22f) of the member (22) and to prevent the attachment bolt (7) from rotating when the nut (8) is tightened. Two L-shaped members (21, 21) extending outward are attached to the side surface (3v) of the frame (3), and two U-shaped members are orthogonal to the L-shaped members (21, 21). The sub-radiator bracket (2B) is formed by assembling the letter-shaped members (22, 22) in a cross-beam shape, and an elastic support mechanism is provided on each of the U-shaped members (22, 22). 1) In the mounting structure of the auxiliary equipment for automobiles supported by the support members (11, 11), the elastic support mechanism is provided with two cylindrical anti-vibration rubbers (4A, 4B) on the upper and lower sides. The horizontal lower end (11e) of the support member of the sub-radiator (1) is sandwiched between the hollow portion (4Ai, 4Bi) of the anti-vibration rubber and the attachment hole (11i) of the support member. 4A, 4B) is set to a predetermined compression thickness A collar (5) to be inserted is inserted, and a washer (6B) is provided above the upper anti-vibration rubber (4A), and a mounting bolt (7) integrated with the washer (6B) is attached to the collar (5). ), And a nut (8) is screwed to the lower end thereof to attach an elastic support mechanism. The washer (6B) is a seating surface (61B) covering the upper surface of the vibration isolating rubber (4A). A vertical portion (63B) is formed in which a part of the vertical part (63B) is bent at a right angle and extends downward, and a tip of the vertical part (63B) is provided in the sub-radiator bracket (2B). An attachment structure with a detent mechanism which is inserted into (2Br) and serves as a detent for the attachment bolt (7) when the nut (8) is tightened.

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