JP5894772B2 - Silencer for laminated leaf spring and laminated leaf spring - Google Patents

Description

  The present invention relates to a laminated leaf spring for a vehicle, and more particularly to a silencer structure for preventing a squeak noise used in this kind of laminated leaf spring.

  As a suspension for connecting a vehicle body and an axle, a laminated leaf spring (leaf type suspension) is known. As shown in FIG. 4, the stacked leaf spring 6 is configured by stacking a plurality of leaf springs 60 a to 60 c (hereinafter also simply referred to as a leaf spring 60), and being bundled by clips 63 a and 63 b at both end portions 62 a and 62 b. ing. The central portion 61 of the laminated leaf spring 6 is attached to a front wheel or rear wheel axle 9 by a U bolt 65.

  Of the plurality of leaf springs 60, the longest leaf spring 60a is called a parent spring. Both end portions 62a and 62b of the parent spring 60a are curled, thereby forming shaft insertion portions 64a and 64b. One shaft insertion portion 64 a accommodates a bush 72 that slidably holds a pivot (fixed shaft) 71, and this pivot 71 is fixed to a vehicle body (not shown) via the bracket 7. The other shaft insertion portion 64b accommodates a bush 82 that slidably holds the shaft 81 of the shackle 8 connected to the vehicle body. Thereby, one end 62a of the laminated leaf spring 6 is fixed to the vehicle body by the pivot 71, and the other end 62b of the laminated leaf spring 6 is connected to the vehicle body by the shackle 8.

  With such a configuration, the overlap leaf spring 6 presses the axle 9 against the road surface to increase the grip force of the wheels (not shown), thereby stabilizing the vehicle traveling and receiving from the road surface during the vehicle traveling. Vibration (unevenness) is prevented from being transmitted to the vehicle body via the axle 9.

  By the way, when the axle 9 moves up and down, the overlap spring 6 is bent in an arch shape with the central portion 61 moving up and down. As a result, the leaf springs 60 adjacent to each other at both end portions 62a and 62b slide relative to each other, and a squeak noise is generated when the metals rub against each other. For this reason, as shown in FIG. 4, a silencer 5 made of rubber, thermoplastic synthetic resin, or the like is interposed between the leaf springs 60 adjacent to each other at both end portions 62a and 62b, thereby causing squeezing when the metals rub against each other. Sound is prevented.

  In the assembly work of the stacked leaf springs 6, the leaf springs 60 a to 60 c are stacked via the silencer 5 in order from the lower side (leaf spring 60 c). At this time, the silencer 5 is simply disposed between the flat upper surface 67 of the leaf spring 60 and the flat lower surface 68 of the leaf spring 60 at an appropriate position while being sandwiched. For this reason, during the assembly work of the laminated leaf spring 6, the silencer 5 is easily detached from the leaf spring 60 and falls, and workability is poor. Therefore, in the technique described in Patent Document 1, the silencer has a two-piece structure composed of two divided bodies, and these divided bodies are connected to each other so as to sandwich the leaf springs through mounting holes provided in the leaf springs. By fitting and fixing the position, the silencer 5 is prevented from being dropped or displaced. This improves the workability of assembling the silencer to the leaf spring.

JP 2009-185887 A

  However, in the technique described in Patent Document 1, it is necessary to work with both hands in order to fit the two divided members constituting the silencer so as to sandwich the leaf spring from both sides of the upper surface and the lower surface of the leaf spring.

  Also, in the assembly work of the stacked leaf springs, after assembling the silencer to the leaf springs, the leaf springs are moved to other locations using a crane or the like, and then a plurality of leaf springs are stacked and aligned (centering). Go and bundle with clips. In such a case, the fitting part of the silencer consisting of two divided bodies loosens due to the impact of the movement and alignment of the leaf spring, and one of the divided bodies located below the leaf spring falls from the leaf spring. And may be lost.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a structure of a silencer for a laminated leaf spring that can improve the workability of assembly to a leaf spring and can reduce the possibility of loss due to dropping from the leaf spring. Is to provide.

In order to solve the above-mentioned problems, the present invention provides a silencer for a laminated leaf spring, the first silencer disposed on the first surface side, which is one surface of the leaf spring, and the other surface of the leaf spring. A two-piece structure including a second silencer arranged on a second surface side is connected, and the first silencer and the second silencer are connected by a connecting member. In the first silencer, when the first silencer is arranged on the first surface side of the leaf spring, the first protrusion is provided on the opposite side of the connecting member from the other side surface of the leaf spring. In addition, the second silencer has a first protrusion at a position protruding from the other side surface of the leaf spring on the opposite side of the connecting member when the second silencer is disposed on the second surface side of the leaf spring. First fitting holes for fitting are provided. Alternatively, the first and second silencers are thicker than the first and second arms and the first and second arms, respectively, on the first and second surface sides of the leaf spring. A trapezoidal columnar joint that protrudes toward the side of the leaf spring when disposed, a first arm and a first thin-walled section that is thinner than the first arm and that connects the joint, A second thin-walled portion that is thinner than the second arm and connects the two arms and the joint is provided.

For example, one aspect of the present invention is a silencer for stacked leaf springs arranged between leaf springs adjacent to each other in the overlapping direction among a plurality of leaf springs constituting the stacked leaf spring,
A first silencer disposed on a first surface side of the leaf spring;
A second silencer disposed on a second surface side of the leaf spring opposite to the first surface;
When the first silencer and the second silencer are connected , and the first silencer and the second silencer are respectively disposed on the first surface side and the second surface side of the leaf spring, the A connecting member located on one side of the leaf spring ,
The first silencer is formed at a position protruding from the other side surface of the leaf spring on the opposite side of the connecting member when the first silencer is disposed on the first surface side of the leaf spring . One protrusion,
In the second silencer, when the second silencer is disposed on the second surface side of the leaf spring, the second silencer is located at a position protruding from the other side surface of the leaf spring on the opposite side of the connecting member . A first fitting hole for fitting with one protrusion is formed.
Alternatively, another aspect of the present invention is a silencer for a laminated leaf spring disposed between leaf springs adjacent to each other in the overlapping direction among a plurality of leaf springs constituting the laminated leaf spring,
A first silencer disposed on a first surface side of the leaf spring;
A second silencer disposed on a second surface side of the leaf spring opposite to the first surface;
A connecting member that connects the first silencer and the second silencer;
The first silencer is formed with a first protrusion,
The second silencer is formed with a first fitting hole for fitting with the first protrusion,
The connecting member is
A belt-like first arm connected to the first silencer;
A belt-like second arm connected to the second silencer;
Provided between the first arm and the second arm, thicker than the first arm and the second arm, respectively, on the first surface side and the second surface side of the leaf spring; A trapezoidal columnar joint projecting toward the side surface of the leaf spring when the silencer and the second silencer are disposed,
A first thin-walled portion that is provided between the first arm and the joint and that connects the first arm and the joint and is thinner than the first arm; and
A second thin-walled portion that is provided between the second arm and the joint, and that is thinner than the second arm and connects the second arm and the joint .

According to the present invention, the first silencer disposed on the first surface side of the leaf spring, and the second silencer disposed on the second surface side of the leaf spring opposite to the first surface. Since the silencers are connected to each other by the connecting members, it is possible to easily assemble these silencers to the leaf springs with one hand, improving workability. In addition, even when an impact is applied to the leaf springs assembled with the first and second silencers by fitting the projections of the first silencer and the fitting holes of the second silencer , The possibility that the second silencer comes off from the leaf spring can be reduced. In addition, even if the first silencer and the second silencer loosen due to this impact and the second silencer falls from the leaf spring, the second silencer is connected to the first silencer by the connecting member. Therefore, the possibility of losing the second silencer can be reduced.

FIG. 1 is a perspective view of a silencer 1 for a laminated leaf spring according to an embodiment of the present invention. 2A is a front view of the silencer 1 for a laminated leaf spring, FIG. 2B is a cross-sectional view taken along the line AA of FIG. 2A, and FIGS. (E) is the A section enlarged view, B section enlarged view, and C section enlarged view of FIG. 2 (B). FIG. 3A is a view for explaining a state in which the laminated leaf spring silencer 1 is assembled to the leaf spring 60b, and FIG. 3B is a leaf spring 60b in which the laminated leaf spring silencer 1 is assembled. It is a figure for demonstrating a mode that the laminated leaf | plate spring 6 was assembled using. FIG. 4 is a view for explaining a schematic configuration of the laminated leaf spring 6.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view of a silencer 1 for a laminated leaf spring according to the present embodiment. 2A is a front view of the silencer 1 for a laminated leaf spring, FIG. 2B is a cross-sectional view taken along the line AA in FIG. 2A, and FIGS. (E) is the A section enlarged view, B section enlarged view, and C section enlarged view of FIG. 2 (B). 3A is a view for explaining a state in which the overlap spring silencer 1 is assembled to the leaf spring 60b, and FIG. 3B is a view in which the overlap leaf silencer 1 is assembled. It is a figure for demonstrating a mode that the laminated leaf | plate spring 6 was assembled using the spring 60b.

  As shown in FIG. 1, the laminated leaf spring silencer 1 according to the present embodiment has a two-piece structure including a first silencer 2 and a second silencer 3. The second silencers 3 are connected to each other by a belt-like connecting member 4. Similar to the conventional silencer 5 described above, the lap leaf spring silencer 1 has a squeak noise caused by relatively sliding leaf springs 60 adjacent to each other in the lap direction at both longitudinal ends 62a and 62b of the lap leaf spring 6. The first silencer 2 is disposed on the upper surface 67 side of the leaf spring 60b (between the leaf spring 60a and the leaf spring 60b), and the second silencer 3 is a leaf spring. It is arranged on the lower surface 68 side of 60b (between the leaf spring 60b and the leaf spring 60c).

  As shown in FIGS. 2A and 2B, the first silencer 2 includes a plate-like silencer body 21 and a first protrusion 24 formed on the upper surface 22 of the silencer body 21. Yes. A second fitting hole 26 is formed in the top surface 25 of the first protrusion 24.

  Since the height dimension d2 of the first protrusion 24 from the upper surface 22 of the silencer body 21 is larger than the plate thickness d3 of the leaf spring 60b, as shown in FIG. When the first silencer 2 is disposed at an appropriate position on the upper surface 67 side of the leaf spring 60b so as to face the upper surface 67 of the leaf spring 60b, the first protrusion 24 is formed on the leaf spring 60b. It fits into the mounting hole 66 and protrudes from the lower surface 68 of the leaf spring 60b.

  As shown in FIG. 2D, the edge of the upper surface 22 of the silencer body 21 is separated from the side surface 28 of the silencer body 21 except for the region along the connecting portion 41 between the first silencer 2 and the connecting member 4. An overhanging flange 27 is formed. This flange 27 improves the releasability of the first silencer 2 during molding and prevents sticking to the fixed mold.

  As shown in FIGS. 2A and 2B, the second silencer 3 includes a plate-like silencer body 31, a first fitting hole 34 formed in the upper surface 32 of the silencer body 31, And a second protrusion 36 formed on the bottom surface 35 of the fitting hole 34.

  As shown in FIG. 3A, the second silencer 3 is disposed at an appropriate position on the lower surface 68 side of the leaf spring 60b so that the upper surface 32 of the silencer body 31 and the lower surface 68 of the leaf spring 60b face each other. In this case, the first fitting hole 34 is fitted with the first protrusion 24 of the first silencer 2 protruding from the lower surface 68 side of the leaf spring 60b. For this reason, the depth d1 of the first fitting hole 34 from the upper surface 32 of the silencer main body 31 is at least the height d2 of the first protrusion 24 from the upper surface 22 of the silencer main body 21 and the leaf spring 60b. It is designed to be larger than the difference (d2−d3) from the thickness d3.

  As shown in FIG. 3 (A), the second protrusion 36 has a second fitting when the first fitting hole 34 and the first protrusion 24 are fitted via the leaf spring 60b. The fitting hole 26 is fitted. Therefore, the height d4 of the second protrusion 36 from the bottom surface 35 of the first fitting hole 34 is at least the depth of the second fitting hole 26 from the top surface 25 of the first protrusion 24. Designed to be smaller than d5.

  As shown in FIG. 2D, the edge of the upper surface 32 of the silencer body 31 is separated from the side surface 38 of the silencer body 31 except for the region along the coupling portion 42 between the second silencer 3 and the connecting member 4. An overhanging flange 37 is formed. The flange 37 improves the releasability of the second silencer 3 at the time of molding and prevents sticking to the fixed mold.

  As shown in FIG. 2E, the connecting member 4 is formed integrally with the side surface 28 of the silencer body 21 of the first silencer 2 and the side surface 38 of the silencer body 31 of the second silencer 3. The connecting member 4 includes a belt-like first arm portion 43 connected to the first silencer 2, a belt-like second arm portion 44 connected to the second silencer 3, A trapezoidal columnar joint 45 provided between the second arm parts 43, 44, a thin part 46 that connects the first arm part 43 and the joint part 45, and a second arm part 44 and the joint part 45 are connected. And a thin portion 47.

  The first arm portion 43 is connected to the first silencer 2 at the lower surface 23 side of the side surface 28 of the silencer body 21 facing the side surface 38 of the silencer body 31, that is, at the coupling portion 41. The thin portion 46 is formed so that the connecting member 4 is easily bent at the connecting portion between the first arm portion 43 and the joint portion 45 (see FIG. 3A), from one side surface 48 of the connecting portion 45 to the other side surface. 49 to 49 in the width direction of the connecting portion 45.

  The second arm portion 44 is connected to the second silencer 3 on the lower surface 33 side of the side surface 38 of the silencer main body 31 facing the side surface 28 of the silencer main body 21, that is, on the coupling portion 42. The thin portion 47 is connected to the joint portion 45 of the second arm portion 44 so that the connecting member 4 can be easily bent (see FIG. 3A), from one side surface 48 of the connecting portion 45 to the other side surface. 49 to 49 in the width direction of the connecting portion 45.

  As shown in FIG. 3A, when the laminated leaf spring silencer 1 is assembled to the leaf spring 60b, the first arm portion 43 and the second arm portion 44 are connected to the joint portion 45 and the leaf spring 60b. (When the laminated leaf spring silencer 1 is assembled from the side surface 60b2 side of the leaf spring 60b, the length is designed so as not to interfere with the side surface 60b2 of the leaf spring 60b and the end surface 60b1 when assembled from the end surface 60b1 side).

  As the material of the silencer 1 for the laminated leaf spring, a rubber material such as natural rubber or synthetic rubber, or a resin material made of a thermoplastic synthetic resin or a thermoplastic elastomer is used.

  Now, as shown in FIG. 3A, the laminated leaf spring silencer 1 is assembled to the leaf spring 60b so as to sandwich the leaf spring 60b between the first silencer 2 and the second silencer 3. At this time, the 1st silencer 2 is located in the upper surface 67 side of the leaf | plate spring 60b, and the 2nd silencer 3 is located in the lower surface 68 side of the leaf | plate spring 60b. Then, the first protrusion 24 of the first silencer 2 is fitted into the mounting hole 66 formed in the leaf spring 60b, protrudes from the lower surface 68 of the leaf spring 60b, and the first silencer 3 Is further fitted to the fitting hole 34. Further, the second protrusion 36 formed in the first fitting hole 34 is engaged with the second fitting hole 26 formed in the first protrusion 24.

  By doing in this way, the 1st silencer 2 and the 2nd silencer 3 are firmly fixed mutually on both sides of the leaf | plate spring 60b, and the silencer 1 for laminated leaf | plate springs is firmly fixed to the leaf | plate spring 60b. Further, the first silencer 2 can be supported by the index finger and the middle finger and the second silencer 3 can be supported by the thumb while holding the joint portion 45 with the palm by utilizing the restoring force of the bent connecting portion 45. The assembly work of the silencer 1 for the laminated leaf spring to the leaf spring 60b can be performed with one hand. In addition, you may form the hole for hooking a ring finger etc. in the connection part 45 as needed so that it may become easy to hold | maintain the junction part 45. FIG.

  As shown in FIG. 3 (B), the leaf spring 60b with the laminated leaf spring silencer 1 assembled in this manner is stacked on the leaf spring 60c, and the leaf spring 60a is further stacked thereon. . After alignment (centering), the clips 63a and 63b are bundled to assemble the overlap leaf spring 6. In the laminated leaf spring 6, the first silencer 2 is disposed between the leaf spring 60a and the leaf spring 60b, and the second silencer 3 is disposed between the leaf spring 60b and the leaf spring 60c. Similarly to the conventional silencer 5 described above, it is possible to prevent the occurrence of squeaking noise caused by relatively sliding leaf springs 60 adjacent to each other in the overlapping direction at both end portions 62a and 62b of the overlapping leaf spring 6.

  In addition, in FIG. 3 (B), the case where the laminated leaf spring 6 is constituted by three leaf springs 60a to 60c is illustrated, but the laminated leaf spring 6 is constituted by five or more odd number leaf springs 60. You may make it do. In this case, the laminated leaf spring silencer 1 may be assembled to the even numbered leaf springs 60.

  The embodiment of the present invention has been described above.

  In the present embodiment, the silencer 1 for the stacked leaf springs includes a first silencer 2 disposed on the upper surface 67 side of the leaf spring 60b and a second silencer 3 disposed on the lower surface 68 side of the leaf spring 60b. The two-piece structure is provided, and the first silencer 2 and the second silencer 3 are connected by a connecting member 4. And when the 1st silencer 2 is arrange | positioned at the upper surface 68 side of the leaf | plate spring 60b, it fits with the mounting hole 66 formed in the leaf | plate spring 60b, and protrudes from the lower surface 68 of the leaf | plate spring 60b. 24 is provided on the side of the first silencer 2 facing the upper surface 37 of the leaf spring 60b (the upper surface 22 of the silencer body 21), and the second silencer 3 is disposed on the lower surface 68 side of the leaf spring 60b. The first fitting hole 34 to be fitted to the first protrusion 24 protruding from the lower surface 68 side of the leaf spring 60b is formed on the surface of the second silencer 3 facing the lower surface 68 of the leaf spring 60b (silencer). It is provided on the upper surface 32) side of the main body 31.

  Thus, according to the present embodiment, the first silencer 2 and the second silencer 3 are connected to each other by the connecting member 4 having elasticity, so that the leaf springs 60b of these silencers 2, 3 are used. Assembling work can be done with one hand, improving workability. Further, since the first silencer 2 disposed on the upper surface 67 side of the leaf spring 60b is fitted into the mounting hole 66 of the leaf spring 60b, the leaf spring to which the laminated leaf spring silencer 1 is assembled. Even when an impact is applied to 60b, the possibility that the first silencer 2 is detached from the leaf spring 60b is low. For example, even if the impact between the first silencer 2 and the second silencer 3 is loosened due to this impact, and the second silencer 3 falls from the leaf spring 60b, the second silencer 3 is moved to the first silencer 3 by the connecting member 4. Since it is connected to the silencer 2, the possibility of the loss of the second silencer 3 can be reduced. In order to make the fitting between the first silencer 2 and the mounting hole 66 of the leaf spring 60b stronger, for example, the attachment of the leaf spring 60b on the outer periphery of the first protrusion 24 of the first silencer 2 is performed. A hook-like snap fit portion that engages with the edge of the hole 66 may be provided.

  Further, according to the present embodiment, since the connecting member 4 is formed in a belt shape having the thin-walled portions 46 and 47 that are easy to bend, the assembly work to the leaf spring 60 of the silencer 1 for the laminated leaf spring is further performed with one hand. It becomes easy.

  In the present embodiment, the second fitting hole 26 is formed on the top surface 26 of the first projecting portion 24, and the second projecting portion 36 is formed on the bottom surface 35 of the first fitting hole 34. ing. When the first protrusion 24 and the first fitting hole 34 are fitted to each other via the leaf spring 60b, the second protrusion 36 and the second fitting hole 26 are also fitted to each other. I try to match. For this reason, fitting with the 1st silencer 2 and the 2nd silencer 3 can be strengthened more. In addition, in order to make fitting with the 1st silencer 2 and the 2nd silencer 3 stronger, for example, the outer periphery of the 2nd projection part 36 of the 2nd silencer 3, and the 2nd of a 1st silencer A hook-like snap fit portion and a recess that engage with each other may be formed on the inner peripheral surface of the fitting hole.

  In the present embodiment, the first and second silencers 2 and 3 are formed in a rectangular plate shape. However, other shapes such as a disk shape and a polygonal plate shape may be used.

  In the present embodiment, the laminated leaf spring silencer 1 is formed by integrally molding a plurality of first silencers 2 and a plurality of second silencers 3 which are alternately connected by a connecting member 4 and cutting the same. You may make it create by doing.

  Moreover, in this Embodiment, although the connection member 4 is made into the belt shape, as long as it is the shape which is easy to bend, other shapes, such as a string shape, may be sufficient.

  Moreover, in this Embodiment, although the connection member 4 is integrally formed with the 1st, 2nd silencers 2 and 3, this invention is not limited to this. For example, the connecting member 4 may be molded separately from the first and second silencers 2 and 3 and attached to the first and second silencers 4 with an adhesive or the like. In this case, since the first and second silencers 2 and 3 can be molded separately, different materials can be used for the materials of the first and second silencers 2 and 3. For example, one of the first and second silencers 2 and 3 is made of rubber or thermoplastic elastomer, and the other is made of thermoplastic synthetic resin such as polyethylene resin, polyacetal resin, polyamide resin or polyester resin.

  Rubber and thermoplastic elastomer are highly elastic and easily deform elastically. For this reason, by using rubber or a thermoplastic elastomer for either one of the first and second silencers 2 and 3, sliding itself between the leaf spring 60 and the laminated leaf spring silencer 1 is suppressed. be able to. Thereby, the squeak noise generated when the leaf spring 60 and the laminated leaf spring silencer 1 slide can be suppressed. On the other hand, thermoplastic synthetic resins have better sliding properties than rubber and thermoplastic elastomers. Further, since the rigidity is high, there is little deterioration due to elastic deformation. For this reason, by using a thermoplastic synthetic resin for the other silencer of the first and second silencers 2, 3, a leaf spring against a relatively large relative slip between the leaf springs 60 adjacent to each other. Since 60 and the leaf spring silencer 1 slide moderately, deterioration due to elastic deformation of rubber or thermoplastic elastomer can be suppressed, and durability of the leaf spring silencer 1 can be improved.

  In the present embodiment, when the first silencer 2 is disposed on the upper surface 67 side of the leaf spring 60b, the first protrusion 24 is fitted to the mounting hole 66 of the leaf spring 60b and the leaf spring. It is formed on the upper surface 22 side of the silencer body 21 of the first silencer 2 so as to protrude from the mask surface 68 of 60b. Further, the first fitting hole 34 is fitted with the first protrusion 24 protruding from the mounting hole 66 of the leaf spring 60b when the second silencer 3 is disposed on the lower surface 68 side of the leaf spring 60b. Thus, the second silencer 3 is formed on the upper surface 32 side of the silencer body 31.

  However, the present invention is not limited to this. When the first silencer 2 and the second silencer 3 are arranged on the upper surface 67 side and the lower surface 68 side of the leaf spring 60b, respectively, the first protrusion 24 and the first fitting hole 34 are fitted to each other. What is necessary is just to form so that it may match.

  For example, the length of each of the first silencer 2 and the second silencer 3 from the side surface to which the connecting member 4 is connected to the side surface opposite to the side surface is made longer than the width of the leaf spring 60b. When the one silencer 2 and the second silencer 3 are respectively arranged on the upper surface 67 side and the lower surface 68 side of the leaf spring 60b, the portion of the silencer body 21 of the first silencer 2 that protrudes from the side surface of the leaf spring 60b The first protrusion 24 is formed on the upper surface 22 side, and the first fitting hole 34 is formed on the upper surface 32 side of the portion of the silencer body 31 of the second silencer 3 that protrudes from the side surface of the leaf spring 60b. You may make it form.

  In this case, it is not necessary to provide the mounting hole 66 in the leaf spring 60b. However, the leaf spring 60 b is provided with a recess, and the silencer body 21 of the first silencer 2 or the silencer body 31 of the second silencer 3 is dropped into the recess, whereby the silencer 1 for the leaf springs with respect to the leaf spring 6. It is preferable that the positioning can be performed.

  1: Silencer for stacked leaf springs, 2: First silencer, 3: Second silencer, 4: Connection member, 6: Stacked leaf spring, 7: Bracket, 8: Shackle, 9: Axle, 21: First Silencer body 2 of silencer 2, 22: upper surface of silencer body 21, 23: lower surface of silencer body 21, 24: first projection, 25: top surface of first projection 24, 26: second fitting hole 27: flange, 28: side surface of the silencer body 21, 31: silencer body of the second silencer 3, 32: upper surface of the silencer body 31, 33: lower surface of the silencer body 31, 34: first fitting hole, 35 : Bottom surface of first fitting hole 34, 36: second protrusion, 37: flange, 38: side surface of silencer body 31, 43: first arm portion, 44: second arm portion, 45: bonding Part, 46, 47 The thin-walled portion, 60,60a~60c: leaf spring

Claims (4)

Among the plurality of leaf springs constituting the laminated leaf spring, a silencer for a laminated leaf spring disposed between leaf springs adjacent in the overlapping direction,
A first silencer disposed on a first surface side of the leaf spring;
A second silencer disposed on a second surface side of the leaf spring opposite to the first surface;
When the first silencer and the second silencer are connected , and the first silencer and the second silencer are respectively disposed on the first surface side and the second surface side of the leaf spring, the A connecting member located on one side of the leaf spring ,
The first silencer is formed at a position protruding from the other side surface of the leaf spring on the opposite side of the connecting member when the first silencer is disposed on the first surface side of the leaf spring . One protrusion,
In the second silencer, when the second silencer is disposed on the second surface side of the leaf spring, the second silencer is located at a position protruding from the other side surface of the leaf spring on the opposite side of the connecting member . A silencer for a laminated leaf spring, wherein a first fitting hole for fitting with one protrusion is formed. Among the plurality of leaf springs constituting the laminated leaf spring, a silencer for a laminated leaf spring disposed between leaf springs adjacent in the overlapping direction,
A first silencer disposed on a first surface side of the leaf spring;
A second silencer disposed on a second surface side of the leaf spring opposite to the first surface;
A connecting member that connects the first silencer and the second silencer;
The first silencer is formed with a first protrusion,
The second silencer is formed with a first fitting hole for fitting with the first protrusion,
The connecting member is
A belt-like first arm connected to the first silencer;
A belt-like second arm connected to the second silencer;
Provided between the first arm and the second arm, thicker than the first arm and the second arm, respectively, on the first surface side and the second surface side of the leaf spring; A trapezoidal columnar joint projecting toward the side surface of the leaf spring when the silencer and the second silencer are disposed,
A first thin-walled portion that is provided between the first arm and the joint and that connects the first arm and the joint and is thinner than the first arm; and
A second thin-walled portion that is provided between the second arm and the joint and connects the second arm and the joint and is thinner than the second arm and can be bent. Features a silencer for laminated leaf springs. A silencer for a laminated leaf spring according to any one of claims 1 to 2 ,
A second fitting hole is formed in the top surface of the first protrusion,
Inside the first fitting hole, when the first fitting hole is fitted to the first protruding portion, a second protruding portion to be fitted to the second fitting hole is provided. A silencer for laminated leaf springs, characterized in that it is formed. It is a laminated leaf spring constructed by bundling a plurality of leaf springs,
At least at both ends, the leaf spring to which the silencer for a laminated leaf spring according to any one of claims 1 to 3 is assembled is sandwiched between two leaf springs to which the silencer for the laminated leaf spring is not assembled. It is comprised so that the laminated leaf | plate spring characterized by the above-mentioned.

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