JP4167764B2 - Exhaust pipe support device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is applied to a hanger rubber or the like for suspending and supporting an exhaust pipe or the like, and relates to an exhaust pipe support device using a plate-like spring body.
[0002]
[Prior art]
Conventionally, as this type of exhaust pipe support device, as shown in FIG. 14, for example, a block-like rubber protruding in opposite directions from both positions separated from each other in the main vibration input direction of an elliptical plate-shaped spring ring 63 The elastic bodies 61 and 62 are integrally fixed to the plate-like spring ring 63, and a support member as a shaft is inserted into the mounting holes 61a and 62a penetrating the rubber elastic bodies 61 and 62, thereby exhaust pipes or A device that is connected to a support is known. In this structure, the plate-shaped spring ring 63 is formed by bending a plate-shaped spring body and joining both ends by welding or riveting to form an endless ring. For example, as shown in FIG. 15, when the silencer 41 provided in the middle of the exhaust pipe 4 is supported by the exhaust pipe support device 6, the silencer 41 is disposed so as to extend from the four corners. .. Are inserted into the lower mounting holes of the exhaust pipe support devices 6, 6..., And the support members extend from the vehicle body 3 into the upper mounting holes of the exhaust pipe support device 6. 31, 31, ... are inserted. In FIG. 15, the opening of the attachment hole of the exhaust pipe support device 6 is disposed so as to face the direction orthogonal to the longitudinal direction of the exhaust pipe 4. In some cases, it may be arranged so as to face (not shown).
[0003]
[Problems to be solved by the invention]
By the way, in the exhaust pipe support device, for example, the spring in the vertical direction (vertical direction in FIG. 14) is relatively soft, the spring in the horizontal direction (horizontal direction in FIG. 14) is relatively hard, and the vertical direction and the horizontal direction are described above. There is a case where a setting request is made to set the ratio of the spring constant to the set value. In this case, in the above-described conventional exhaust pipe support device 6, if the left and right springs are to be hardened, the plate spring ring 63 has a wider plate width (width in the direction perpendicular to the plane of FIG. 14). Although it is possible to harden the spring, the spring constant in the vertical direction will change accordingly. Further, even if the plate spring ring 63 is thickened, it is possible to make the left and right springs stiff, but the spring constant in the up and down direction also changes accordingly. Thus, even if the plate width or plate thickness of the plate-like spring ring 63 is changed in order to make the spring in the left-right direction stiff, the conventional exhaust pipe support device 6 has a spring constant in both the up-down direction and the left-right direction. Since it becomes higher or both become lower, there is an inconvenience that it becomes difficult to set the ratio of the spring constant in the vertical direction and the horizontal direction to a target value.
[0004]
Further, when the exhaust pipe support device 6 is used as an exhaust pipe support device for supporting the exhaust pipe 4 of the vehicle, the exhaust pipe 4 may be thermally expanded in the longitudinal direction due to heat generated by driving the engine. In some cases, the engine moves back and forth due to sudden acceleration or deceleration and the exhaust pipe 4 moves in the longitudinal direction. In such a case, in the conventional exhaust pipe support device 6, it is difficult to follow the movement of the exhaust pipe 4 in the longitudinal direction, and it becomes difficult to reliably support the exhaust pipe 4 by suspending it. There is also a problem that it ends up.
[0005]
Further, the conventional exhaust pipe support device 6 uses the plate-like spring ring 63 formed by bending the plate-like spring body and joining both ends by welding or riveting to form an endless annular shape. When the apparatus 6 is manufactured, a welding or rivet joining process is required, resulting in an increase in manufacturing cost due to an increase in the number of processes.
[0006]
In addition, since the conventional exhaust pipe support device 6 has a pair of mounting holes arranged in the vertical direction, the width in the horizontal direction is narrow. For this reason, for example, when a wide object such as a silencer 41 is suspended and supported, as shown in FIG. 15, three or four (four in the illustrated example) exhaust pipe support devices 6, 6,. There is also a problem that the cost increases accordingly.
[0007]
The present invention has been made in view of such circumstances, and an object of the present invention is to set a ratio of a spring constant between the vertical direction and the horizontal direction in an exhaust pipe support device using a plate-like spring body. It is to solve the above-mentioned problems such as being difficult.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present inventor determines the spring constants in the vertical direction and the horizontal direction depending on whether the input loads in the vertical direction and the horizontal direction are applied to the compression of the plate-like spring body or to the bending. Considering that the ratio is changed, the load input parts from either one of the support member and the exhaust pipe are separated from each other by two places, and the load input positions from the other support member are set to the two load parts. If the load input parts are arranged between the input parts and connected to each other by a plate-like spring body, the vertical and left-right input loads are compressed and compressed by the plate-like spring body according to the arrangement angle of the plate-like spring body. The present invention has been completed by paying attention to the point that it can be applied to any of the bending.
[0009]
Specifically, the present invention is directed to an exhaust pipe support device that supports an exhaust pipe suspended from a supported body, in which a support member extending from one of the exhaust pipe and the supported body is attached. It is assumed that a central attachment portion and a pair of side attachment portions to which a support member extending from the other of the exhaust pipe and the supported body is attached are provided. Then, the pair of side attachment portions are respectively arranged at the left and right side positions of the center attachment portion, and are connected to each other by a plate spring body. It is a specific matter. Here, the “exhaust pipe” is connected to a prime mover as a vibration source to transmit vibrations from the prime mover. In addition to the exhaust pipe main body, a silencer connected to the exhaust pipe main body is also included. Is included. In this case, the ratio of the spring constant between the vertical direction and the horizontal direction can be changed by changing the inclination angle of the plate-like spring body connecting the central mounting portion and the pair of side mounting portions to the horizontal direction. Will be able to. That is, if the inclination angle is increased, the plate-like spring body is disposed so as to extend in a relatively vertical direction, and if a vertical load is input to the center or side mounting portion, the plate This acts on the compression of the spring body. For this reason, the spring constant in the vertical direction is relatively high. On the other hand, if a load in the left-right direction is input to the center or the side attachment portion, the spring constant in the left-right direction becomes relatively low because it acts on the bending of the plate spring body.
[0010]
And if the said inclination | tilt angle is made small, an inclination part will be arrange | positioned so that it may extend in the left-right direction comparatively, and the input load of an up-down direction will act on the bending of the said plate-shaped spring body. For this reason, the spring constant in the vertical direction is relatively low. On the other hand, since the input load in the left-right direction acts on compression of the plate-like spring body, the spring constant in the left-right direction becomes relatively high. As described above, the ratio of the spring constant between the vertical direction and the horizontal direction is changed only by changing the inclination angle, and it is easily realized to set and adjust the ratio to a target value.
[0011]
Further, in the conventional exhaust pipe support device, the plate-like spring body needs to be bent and welded or rivet joined to form an annular shape. However, in the exhaust pipe support device, it is not necessary to join. For this reason, the said welding or rivet joining process can be skipped, and reduction of manufacturing cost is achieved.
[0012]
Further, by arranging the side mounting portions so as to be separated from each other in the left-right direction, the exhaust having a wider width in the left-right direction than a conventional exhaust pipe support device in which a pair of mounting holes are arranged in the vertical direction. A tube support device is configured. For this reason, for example, when the silencer is suspended and supported, a pair of support members are disposed from the left and right side portions of the silencer, and the support members are respectively attached to the side attachment portions. It becomes possible to suspend and support the silencer by the exhaust pipe support device, and the cost can be reduced.
[0013]
And as said center attachment part and each side attachment part, it forms with a block-shaped rubber elastic body, and the rod-shaped support member extended from an exhaust pipe or a to-be-supported body is inserted in the said center attachment part and each side attachment part. A mounting hole to be formed may be formed. In this case, since the rod-like support member is only inserted into the mounting hole when the exhaust pipe support device is assembled, the assembly operation of the exhaust pipe support device can be facilitated. Further, since the attachment portion is formed of a rubber elastic body, not only the plate-like spring body but also a spring by this attachment portion can be added to the exhaust pipe support device.
[0014]
Further, the plate-like spring body is formed in a mountain shape whose center protrudes upward, and the central attachment portion is formed so as to protrude downward from the lower surface position of the center of the plate-like spring body, while the side attachment portion is formed. The plate spring bodies may be disposed at both end portions. In this case, if vertical vibration is input and the central mounting portion is displaced relative to the supported body or the exhaust pipe disposed so as to face the central mounting portion, the central mounting portion And the supported body or the exhaust pipe come into contact with each other, and the amplitude thereof is regulated to a predetermined amount. Further, the side mounting portions are respectively arranged at obliquely upper positions on both the left and right sides of the central mounting portion, and the plate-like spring body is passed from the lower portion of the central mounting portion to the center mounting portion through the both lateral outer positions. You may arrange | position to the upper position of an attaching part and may each be connected with the said side attaching part. In this case, if the central mounting portion is relatively displaced in the vertical direction as described above, the central mounting portion comes into contact with the side mounting portion, and the amplitude thereof is restricted to a predetermined amount.
[0015]
Further, rib-like members extending from the central attachment portion side toward the respective side attachment portions may be disposed on the plate-like spring body. Here, as the “rib-shaped member”, any member may be used as long as it can follow the deformation of the plate-shaped spring body and can improve the rigidity of the plate-shaped spring body in the bending direction. Specifically, for example, it may be formed of a rubber elastic body. In this case, since the rigidity of the spring body with respect to the bending direction is improved, the transmission of the vibration is suppressed when a vibration having a high frequency and a minute amplitude is input. As a result, the surge frequency shifts to the high frequency side.
[0016]
On the other hand, a constricted portion having a narrow plate width may be formed in the plate-like spring body. In this case, when the exhaust pipe moves in the front-rear direction, the plate-like spring body is twisted or bent, and it is allowed to follow the back-and-forth movement of the exhaust pipe of the plate-like spring body. For this reason, it becomes possible to suspend and support the exhaust pipe reliably and stably.
[0017]
【The invention's effect】
As described above, according to the exhaust pipe support device of the present invention, the ratio of the spring constant between the vertical direction and the horizontal direction is changed only by changing the inclination angle, and the ratio is set and adjusted to a target value. Can be easily performed.
[0018]
Further, in the manufacture of the exhaust pipe support device, the welding or rivet joining step can be omitted, and the manufacturing cost can be reduced.
[0019]
The silencer can be suspended and supported by a single exhaust pipe support device, and the cost can be reduced.
[0020]
Furthermore, an exhaust pipe support apparatus can be easily attached by forming a center attaching part and each side attaching part with a block-shaped rubber elastic body . Moreover, not only a plate-like spring body but also a spring by this mounting portion can be added.
[0021]
According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, when the vertical vibration is input, the central mounting portion abuts the vehicle body and the amplitude is restricted to a predetermined amount. it can.
[0022]
According to the third aspect of the invention, in addition to the effect of the invention of the claim 1 Symbol placement, its amplitude is as central mounting portion abuts against the side attachment portion when a vertical vibration is inputted Can be regulated to a predetermined amount.
[0023]
According to the fourth aspect of the present invention, transmission of high-frequency minute amplitude vibration is further suppressed, and the surge frequency can be shifted to the high-frequency side.
[0024]
Further , according to the fifth aspect of the present invention, it is allowed to follow the back and forth movement of the exhaust pipe, so that the exhaust pipe can be reliably and stably suspended and supported.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0026]
<First Embodiment>
1 to 3 show an exhaust pipe support device according to a first embodiment of the present invention. Reference numeral 1 denotes an exhaust pipe support device that suspends and supports a silencer 41 provided in the middle of the exhaust pipe 4. As shown in FIG. 4, the exhaust pipe support device 1 is provided with a central mounting portion 11 at the center position, and the right and left mounting portions as side mounting portions at the left and right side positions with respect to the central mounting portion 11. 12a and 12b are arranged respectively. The central attachment portion 11 and the right and left attachment portions 12 a and 12 b are connected to each other by a plate spring body 13.
[0027]
The center attachment portion 11 is formed of a block-like rubber elastic body and is formed so as to protrude downward from the center position of the plate-like spring body 13. The central mounting portion 11 is formed with a pair of mounting holes 11a and 11b into which a pair of support members 31 and 31 extending from the vehicle body 3 as a supported body are inserted (see FIG. 4 or FIG. 5). .
[0028]
As shown in FIG. 4, the right and left attachment portions 12 a and 12 b are both formed of a block-like rubber elastic body, and attachment holes 12 c and 12 d into which support members 43 and 43 extending from the silencer 41 are inserted. Each is formed (see FIG. 4 or FIG. 6).
[0029]
The plate-like spring body 13 is formed in a smooth mountain shape that protrudes upward from both ends toward the center, and the center attachment portion 11 is attached to the top position of the plate-like spring body 13. Both side end portions are bent upward, and the right and left mounting portions 12a and 12b are respectively disposed.
[0030]
And as shown in FIGS. 1-3, the suspension member 44 is attached so that it may wind around the silencer 41, and a pair of support members 43 and 43 extended from the both sides of this suspension member 44 are the above-mentioned. The right and left mounting portions 12a and 12b are inserted into the mounting holes 12c and 12d, respectively. Further, the winding member 44 is formed with a convex portion 44a, and the convex portion 44a is formed so as to protrude upward at a position opposite to the central mounting portion 11.
[0031]
Next, the operation and effect of the first embodiment will be described.
[0032]
By changing the inclination angle θ (see FIG. 4) of the plate spring body 13 with respect to the horizontal direction, the ratio of the spring constant between the vertical direction and the horizontal direction can be changed. That is, if the inclination angle θ is increased, the plate spring body 13 is disposed so as to extend in the vertical direction, and the input load in the vertical direction acts on the plate spring body 13 for compression. become. For this reason, the spring constant in the vertical direction is relatively high. On the other hand, the input load in the left-right direction acts on the plate spring body 13 in bending. For this reason, the spring constant in the left-right direction is relatively low. On the other hand, if the inclination angle θ is reduced, the plate-like spring body 13 is disposed so as to extend in the left-right direction, and the spring constant in the up-down direction is relatively low, while the spring constant in the left-right direction is compared. Become higher. As described above, the ratio of the spring constant between the vertical direction and the horizontal direction is changed only by changing the inclination angle θ, and the ratio can be easily set and adjusted to a target value. .
[0033]
When the vertical vibration is input to the exhaust pipe support device 1 and the central mounting portion 11 is relatively displaced in the vertical direction with respect to the silencer 41, the central mounting portion 11 and the convex portion 44 a of the winding member 44. Are in contact with each other, and the amplitude can be regulated to a predetermined amount.
[0034]
Further, in the conventional exhaust pipe support device, it is necessary to bend the plate spring body and weld or rivet join to form an annular shape. However, in the exhaust pipe support device 1, the plate spring body 13 is joined. It is possible to manufacture the plate-like spring body 13 by vulcanizing and bonding the center, right side, and left side attachment portions 11, 12a, 12b. For this reason, the welding or rivet joining step can be omitted, and the manufacturing cost can be reduced.
[0035]
Furthermore, as shown in FIGS. 1 to 3, a single exhaust pipe support device 1 can suspend and support a wide object such as a silencer 441, thereby reducing costs. become able to.
[0036]
In addition, the exhaust pipe support device 1 can be used upside down as shown in FIG. In this case, the support members 31, 31 extending from the vehicle body 3 are inserted into the mounting holes 12c, 12d of the right and left mounting portions 12a, 12b, while the exhaust pipe 4 is inserted into the mounting holes 11a, 11b of the central mounting portion 11. The support members 43, 43 extending from the center may be inserted. In this way, when the central mounting portion 11 is displaced up and down relative to the vehicle body 3, the central mounting portion 11 and the vehicle body 3 come into contact with each other and the amplitude thereof can be regulated.
[0037]
Second Embodiment
FIG. 8 shows an exhaust pipe support device 1a according to a second embodiment of the present invention. This exhaust pipe support device protrudes upward along the plate spring body 13 as shown in FIG. 8 or FIG. Rib-shaped members 13a and 13b are disposed. The rib-like members 13a and 13b are formed of a rubber elastic body, can follow the deformation of the plate-like spring body 13, and improve the rigidity of the plate-like spring body 13 in the bending direction. Be able to.
[0038]
In addition, since the other structure of the said exhaust pipe support apparatus 1a is the same as that of the thing of 1st Embodiment, the same code | symbol is attached | subjected to the same member and the description is abbreviate | omitted.
[0039]
And in the case of the said 2nd Embodiment, since the rigidity of the bending direction of the plate-shaped spring body 13 becomes high, when a high frequency vibration is input, transmission of this vibration is suppressed, As a result, a surge frequency is made into a high frequency side. Will be able to migrate to.
[0040]
<Third Embodiment>
FIG. 10 or FIG. 11 shows an exhaust pipe support device 1b according to the third embodiment of the present invention. This exhaust pipe support device 1b has constricted portions 13c and 13d in which the plate width of the plate spring body 13 becomes narrow. It is supposed to be formed.
[0041]
In addition, since the other structure of the said exhaust pipe support apparatus 1b is the same as that of the thing of 1st Embodiment, the same code | symbol is attached | subjected to the same member and the description is abbreviate | omitted.
[0042]
And in the case of the said 3rd Embodiment, even if it is a case where the exhaust pipe 4 moves to the front-back direction by thermal expansion, rapid deceleration, or rapid acceleration, by the constriction parts 13c and 13d provided in the plate-shaped spring body 13 Since the rigidity becomes weak, the exhaust pipe support device 1b is allowed to follow the back-and-forth movement. For this reason, the exhaust pipe 4 can be always suspended and supported reliably.
[0043]
<Other embodiments>
In addition, this invention is not limited to the said 1st-3rd embodiment, Other various embodiments are included. That is, in the said 1st-3rd embodiment, although the two attachment holes 11a and 11b of the center attachment part 11 are formed, it is not restricted to this, For example, as shown in FIG. It is good also as the exhaust pipe support apparatus 1c which formed the one attachment hole 11c.
[0044]
Further, for example, the exhaust pipe support device 5 having a shape as shown in FIG. 13 may be formed. That is, the left and right mounting portions 52a and 52b are respectively disposed obliquely above the left and right sides of the central mounting portion 51, and the plate-like spring body 53 is positioned outward from the lower portion of the central mounting portion 51 on the left and right sides. It is good also as a shape which is arrange | positioned so that the upper part of the said center attachment part 51 may be covered, and may be connected with the said left side and right side attachment parts 52a and 52b. In this case, the support member from the exhaust pipe is inserted into the attachment hole 51a of the central attachment portion 51, and the support member from the vehicle body is inserted into the attachment holes 52c and 52d of the left and right attachment portions 52a and 52b. You can do it. In this way, when the central mounting portion 51 is relatively displaced in the vertical direction with respect to the vehicle body, the central mounting portion 51 comes into contact with the left and right mounting portions 52a and 52b (the one-dot chain line in FIG. 13). reference). As a result, the vertical amplitude can be regulated to a predetermined amount.
[0045]
The left and right attachment portions 52a and 52b are provided with notches so that the insides of the attachment holes 52c and 52d communicate with the outside in the radial direction. For this reason, when the exhaust pipe support device 5 is attached, a support member from the vehicle body can be inserted into the attachment holes 52c and 52d through the notch. For this reason, the attachment work of the exhaust pipe support device 5 can be facilitated.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an exhaust pipe support structure using an exhaust pipe support device according to a first embodiment.
FIG. 2 is a side view showing an exhaust pipe support structure using the exhaust pipe support device according to the first embodiment.
FIG. 3 is a front view showing an exhaust pipe support structure using the exhaust pipe support device according to the first embodiment.
FIG. 4 is a front view showing the exhaust pipe support device.
FIG. 5 is an end view showing an AA end surface of FIG. 4;
6 is an end view showing the BB end surface of FIG. 4; FIG.
FIG. 7 is a front explanatory view showing a support structure different from that of FIG. 1 of the exhaust pipe support device.
FIG. 8 is a view corresponding to FIG. 4 showing an exhaust pipe support device according to a second embodiment.
9 is an end view showing the CC end surface of FIG. 8. FIG.
FIG. 10 is a perspective view showing an exhaust pipe support device according to a third embodiment.
FIG. 11 is a plan view showing an exhaust pipe support device according to a third embodiment.
FIG. 12 is a view corresponding to FIG. 4 showing an exhaust pipe support device according to another embodiment.
13 is a view corresponding to FIG. 4 showing an exhaust pipe support device according to another embodiment different from FIG.
FIG. 14 is a longitudinal sectional view showing a conventional exhaust pipe support device.
FIG. 15 is a view corresponding to FIG. 1 showing an exhaust pipe support structure using a conventional exhaust pipe support device.
[Explanation of symbols]
1, 1a, 1b, 1c, 5 Exhaust pipe support device 3 Car body (supported body)
4 Silencer (exhaust pipe)
11, 51 Center mounting portion 13, 53 Plate spring body 31 Support member (supported body side)
43 Support member (exhaust pipe side)
11a to 11c, 51a Mounting hole (central mounting part)
12a, 52a Left side mounting part (side mounting part)
12b, 52b Right side mounting part (side mounting part)
12c, 52c Mounting hole (Left side mounting part)
12d, 52d Mounting hole (Right side mounting part)
13a, 13b Rib-shaped members 13c, 13d Constriction

Claims (5)

In the exhaust pipe support device that supports the exhaust pipe suspended from the vehicle body ,
Block having a mounting hole and a central mounting portion which is formed by a block-like rubber elastic body having a mounting hole supporting a rod-shaped member extending from said body is inserted, the support members of the respective bar-shaped extending al or the exhaust pipe is inserted A pair of side mounting portions formed of a rubber elastic body,
The pair of side mounting portions are arranged separately from each other on the left and right sides of the central mounting portion,
The center mounting portion and each side mounting portion are connected to each other by a plate-like spring body formed in a mountain shape with the center protruding upward ,
While the central mounting portion is formed so as to protrude downward from the central lower surface of the plate spring body,
The side attachment portions are respectively disposed at both end portions of the plate spring body,
Block-shaped rubber elastic body of the central mounting portion, by abutting the upper Sharing, ABS trachea, exhaust pipe support, characterized by regulating the amount of displacement to a predetermined amount. In the exhaust pipe support device that supports the exhaust pipe suspended from the vehicle body,
A central mounting portion formed by a block-shaped rubber elastic body having a mounting hole into which a rod-shaped support member extending from the exhaust pipe is inserted, and a block shape having a mounting hole into which a rod-shaped support member extending from the vehicle body is inserted. A pair of side mounting portions formed of a rubber elastic body,
The pair of side mounting portions are arranged separately from each other on the left and right sides of the central mounting portion,
The center mounting portion and each side mounting portion are connected to each other by a plate-like spring body formed in a shape whose center protrudes downward,
While the central mounting portion is formed so as to protrude upward from the central upper surface of the plate spring body ,
The side attachment portions are respectively disposed at both end portions of the plate spring body ,
The exhaust pipe support device according to claim 1, wherein a displacement amount of the block-like rubber elastic body of the central attachment portion is restricted to a predetermined amount by contacting the vehicle body . In the exhaust pipe support device that supports the exhaust pipe suspended from the vehicle body,
A central mounting portion formed by a block-shaped rubber elastic body having a mounting hole into which a rod-shaped support member extending from the exhaust pipe is inserted, and a block shape having a mounting hole into which a rod-shaped support member extending from the vehicle body is inserted. A pair of side mounting portions formed of a rubber elastic body,
The pair of side mounting portions are respectively disposed obliquely above the left and right side positions of the central mounting portion,
The central mounting portion and the side mounting portions are connected to each other by a plate spring body,
Each plate-like spring body is arranged from the lower part of the central mounting part to the upper side of the central mounting part through the outer positions on both sides of the central mounting part to reach the side mounting parts.
The exhaust pipe support device according to claim 1, wherein the block-like rubber elastic body of the central attachment portion is restricted to a predetermined amount by contacting the side attachment portions. In any one of Claims 1-3 ,
An exhaust pipe support device, wherein a rib-like member extending from a central attachment portion side toward each lateral attachment portion side is disposed on the plate-like spring body. In any one of Claims 1-3 ,
An exhaust pipe support device characterized in that a constricted portion having a narrow plate width is formed in the plate spring body.

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