Vehicle vibration isolation device

Abstract

To prevent vibration of a vehicle motor compressor 3 from being transmitted to a vehicle body side bracket.SOLUTION: Elastic deformation parts 11a, 11b are made of a metal material and formed into a plate manner with a thickness in a Z direction, and are elastically deformed by vibration and vibrate in the Z direction. An elastic deformation part 13a is made of a metal material and formed into a plate manner with a thickness in an A2 direction, and is elastically deformed by vibration and vibrates in the A2 direction. The elastic deformation part is made of a metal material and formed into a plate manner with a thickness in an A4 direction, and is elastically deformed by vibration and vibrates in the A4 direction. Displacement regulation parts 110a, 110b regulate displacement in a vehicle electric compressor 3 in the A1 direction, A2 direction, A3 direction, A4 direction and Z direction.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a vibration isolator for vehicles.

Background Art

[0002] Conventionally, a vibration isolator for vehicles that elastically supports an electric compressor while being supported by a vehicle body has been proposed (see, for example, Patent Document 1). The vehicle vibration isolator includes a compressor-side bracket fixed to the electric compressor, a vehicle-side bracket fixed to the vehicle body, and a columnar rubber elastic member disposed between the compressor-side bracket and the vehicle-side bracket.

[0003] The vehicle vibration isolator includes a guide pin provided on the vehicle-side bracket to regulate the vertical displacement of the electric compressor so that the vertical displacement of the electric compressor is within a preset allowable range.

[0004] Here, the compressor-side bracket is disposed above the vehicle-side bracket. The elastic member forms a lower clearance on the lower side with respect to the compressor-side bracket between the compressor-side bracket and the vehicle-side bracket.

[0005] The elastic member is elastically deformed by vibrations transmitted from the electric compressor through the compressor-side bracket. As a result, the elastic member limits the amount of displacement of the vertical displacement of the electric compressor. That is, the elastic member is elastically deformed by vibrations transmitted from the electric compressor, and the maximum amplitude of the electric compressor is limited.

[0006] Therefore, the elastic member can suppress the transmission of vibrations of the electric compressor to the vehicle-side bracket through the compressor-side bracket by elastic deformation.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

[0008] In the vehicle vibration isolation device described in the above patent document, the elastic member is positioned between the compressor-side bracket and the vehicle-side bracket, and elastically deforms due to vibrations transmitted from the electric compressor, thereby limiting the displacement (i.e., maximum amplitude) of the electric compressor.

[0009] However, the elastic member is made of rubber. Therefore, when a large load is applied to the elastic member from the electric compressor via the compressor-side bracket at high temperatures, it may undergo creep deformation. As a result, the elastic deformation of the elastic member due to vibrations transmitted from the electric compressor is impaired. Consequently, the elastic member becomes unable to limit the displacement of the electric compressor.

[0010] Therefore, there is a risk that the elastic member will not be able to suppress the transmission of vibrations from the electric compressor (i.e., the vibration source) to the vehicle-side bracket (i.e., the support) through elastic deformation.

[0011] In view of the above points, the present invention aims to provide a vehicle vibration damping device that appropriately suppresses the transmission of vibrations from a vibration source to a support. [Means for solving the problem]

[0012] To achieve the above objective, the invention described in claim 1 provides a vehicle vibration damping device that supports a vibration source (3) while it is supported by a support body (2a, 2b, 2c, 2d), and performs vibration damping to suppress the transmission of vibrations generated in the vibration source to the support body, A first elastically deformable portion (11a, 11b, 11c, 11d) is formed in a plate shape with a thickness in the first thickness direction (Z) and is elastically deformed by vibration and vibrates in the first thickness direction, When the direction intersecting the first thickness direction is defined as the second thickness direction (A2), the second elastically deformable portion (13a, 13c) is formed in a plate shape made of a metal material and having thickness in the second thickness direction, and is elastically deformed by vibration and vibrates in the second thickness direction, When the direction intersecting the first thickness direction and the second thickness direction is defined as the third thickness direction (A4), a third elastically deformable portion (13b, 13d) is formed in a plate shape made of a metal material, having thickness in the third thickness direction, and is elastically deformed by vibration and vibrates in the third thickness direction, It includes displacement restricting units (110a, 110b, 110c, 110d) that restrict the displacement of the vibration source so that the position of the vibration source falls within a predetermined range.

[0013] Therefore, the first, second, and third elastic deformation sections are made of metallic material. As a result, creep deformation is less likely to occur in the first, second, and third elastic deformation sections even when a large load is applied from a vibration source at high temperatures.

[0014] Therefore, the first elastic deformation section, the second elastic deformation section, and the third elastic deformation section can dampen vibrations transmitted from the vibration source in three directions: the first thickness direction, the second thickness direction, and the third thickness direction.

[0015] As a result, the first elastic deformation section, the second elastic deformation section, and the third elastic deformation section can limit the maximum amplitude of the vibration source generated by the displacement restricting section.

[0016] As described above, the vehicle vibration isolation device can effectively suppress the transmission of vibrations from the vibration source to the support.

[0017] The reference numerals in parentheses attached to each component indicate an example of the correspondence between that component and the specific components described in the embodiments described later. [Brief explanation of the drawing]

[0018] [Figure 1]This is a top view of the vehicle vibration isolator in the first embodiment, and it is a top view for assisting in explaining the overall configuration of the plate, four leaf springs, and four displacement restricting portions that constitute the vehicle vibration isolator. [Figure 2] This is a front view of the vehicle vibration isolator in the first embodiment of FIG. 1, and it is a front view for assisting in explaining the plate, four leaf springs, and four displacement restricting portions that constitute the vehicle vibration isolator. [Figure 3] This is a left side view of the vehicle vibration isolator in the first embodiment of FIG. 1 as viewed from arrow III, and it is a left side view for assisting in explaining the plate, four leaf springs, and four displacement restricting portions that constitute the vehicle vibration isolator. [Figure 4] This is a right side view of the vehicle vibration isolator in the first embodiment of FIG. 1 as viewed from arrow IV, and it is a right side view for assisting in explaining the plate, four leaf springs, and four displacement restricting portions that constitute the vehicle vibration isolator. [Figure 5] This is a view of the vehicle vibration isolator in the first embodiment of FIG. 3 as viewed from arrow V, and it is a view for assisting in explaining the fixing of the leaf spring to the vehicle body side bracket, the displacement restricting portion of the vehicle vibration isolator, and the structure of the pipe. [Figure 6] This is a cross-sectional view taken along line VI-VI of the vehicle vibration isolator in the first embodiment of FIG. 3, and it is a cross-sectional view for assisting in explaining the plate that constitutes the vehicle vibration isolator, its through hole, the elastic member for restriction, and the displacement restricting portion. [Figure 7] This is a cross-sectional view taken along line VII-VII of the vehicle vibration isolator in the first embodiment of FIG. 6, and it is a cross-sectional view for assisting in explaining the elastic member for restriction, the pipe, and the displacement restricting portion of the plate that constitute the vehicle vibration isolator. [Figure 8] This is a cross-sectional view taken along line VIII-VIII of the vehicle vibration isolator in the first embodiment of FIG. 3, and it is a cross-sectional view for assisting in explaining the fixing of the elastic deformation portion of the leaf spring to the vehicle body side bracket and the cross-sectional configuration of the pipe of the vehicle vibration isolator. [Figure 9]FIG. 3 is a perspective view of the vehicle vibration isolator in the first embodiment as viewed from the IX direction, and is a diagram for assisting in the explanation of the fixing of the elastic deformation portion of the leaf spring to the vehicle body side bracket, the displacement restricting portion of the vehicle vibration isolator, and the structure of the pipe. [Figure 10] FIG. 3 is a cross-sectional view taken along the line X-X of the vehicle vibration isolator in the first embodiment, and is a cross-sectional view for assisting in the explanation of the plate constituting the vehicle vibration isolator, its through-hole, the restricting elastic member, and the displacement restricting portion. [Figure 11] FIG. 6 is a cross-sectional view taken along the line XI-XI of the vehicle vibration isolator in the first embodiment, and is a cross-sectional view for assisting in the explanation of the restricting elastic member, the pipe, and the displacement restricting portion of the plate constituting the vehicle vibration isolator. [Figure 12] FIG. 3 is a cross-sectional view taken along the line XII-XII of the vehicle vibration isolator in the first embodiment, and is a cross-sectional view for assisting in the explanation of the fixing of the elastic deformation portion of the leaf spring to the vehicle body side bracket and the cross-sectional configuration of the pipe of the vehicle vibration isolator. [Figure 13] FIG. 4 is a perspective view of the vehicle vibration isolator in the first embodiment as viewed from the XIII direction, and is a diagram for assisting in the explanation of the fixing of the leaf spring to the vehicle body side bracket, the displacement restricting portion of the vehicle vibration isolator, and the structure of the pipe. [Figure 14] FIG. 4 is a cross-sectional view taken along the line XIV-XIV of the vehicle vibration isolator in the first embodiment, and is a cross-sectional view for assisting in the explanation of the plate constituting the vehicle vibration isolator, its through-hole, the restricting elastic member, and the displacement restricting portion. [Figure 15] FIG. 14 is a cross-sectional view taken along the line XV-XV of the vehicle vibration isolator in the first embodiment, and is a cross-sectional view for assisting in the explanation of the restricting elastic member, the pipe, and the displacement restricting portion of the plate constituting the vehicle vibration isolator. [Figure 16] FIG. 4 is a cross-sectional view taken along the line XVI-XVI of the vehicle vibration isolator in the first embodiment, and is a cross-sectional view for assisting in the explanation of the fixing of the elastic deformation portion of the leaf spring to the vehicle body side bracket and the cross-sectional configuration of the pipe of the vehicle vibration isolator. [Figure 17]Figure 4 is a view taken along the XVII arrow of the vehicle vibration damping device in the first embodiment, and is a diagram to assist in explaining the fixing of the leaf spring to the vehicle body bracket, the displacement restricting part of the vehicle vibration damping device, and the structure of the pipe. [Figure 18] Figure 4 is a cross-sectional view of the vehicle vibration damping device in the first embodiment, taken from line XVIII to XVIII. This cross-sectional view is intended to assist in explaining the plate, its through-hole, limiting elastic member, and displacement restricting section that constitute the vehicle vibration damping device. [Figure 19] Figure 18 is a cross-sectional view from line XIX-XIX of the vehicle vibration damping device in the first embodiment, and is a cross-sectional view to assist in explaining the displacement restricting parts of the limiting elastic member, pipe, and plate that constitute the vehicle vibration damping device. [Figure 20] Figure 4 is a cross-sectional view of the XX-XX line of the vehicle vibration damping device in the first embodiment, and is a cross-sectional view intended to assist in explaining the fixing of the elastically deformed portion of the leaf spring to the vehicle body bracket and the cross-sectional configuration of the pipe of the vehicle vibration damping device. [Figure 21] This diagram is intended to assist in explaining the six directions in orthogonal coordinates set for the vehicle vibration damping device of the first embodiment. [Figure 22] This diagram is intended to assist in explaining the resonant frequency of the electric compressor alone without using the vehicle vibration isolation device of the first embodiment. The vertical axis represents the load generated due to the vibration of the electric compressor alone, and the horizontal axis represents the frequency. [Figure 23] This diagram is intended to assist in explaining the effect of the vehicle vibration isolation device of the first embodiment. The vertical axis represents the vibration transfer function transmitted from the electric compressor to the vehicle body, and the horizontal axis represents frequency. [Figure 24] This diagram shows the proportional relationship of a vehicle vibration damping device in which a compressor-side bracket, fixed to the vehicle's electric compressor, is elastically supported from below by a vehicle-side bracket, fixed to the vehicle body. [Figure 25] This diagram, provided to illustrate the structure of the two overlapping plate springs constituting the vehicle vibration damping device in the second embodiment, corresponds to Figure 5 in the first embodiment described above. [Figure 26]This diagram, which is a cross-sectional view taken between XXVI-XXVI in Figure 25, is intended to illustrate the structure of the two stacked leaf springs that constitute the vehicle vibration damping device in the second embodiment. [Figure 27] This diagram, provided to illustrate the structure of the two overlapping plate springs constituting the vehicle vibration damping device in the second embodiment, corresponds to Figure 9 in the first embodiment described above. [Figure 28] This diagram, which is a cross-sectional view taken between XXVIII-XXVIII in Figure 27, is intended to aid in explaining the structure of the two stacked leaf springs that constitute the vehicle vibration damping device in the second embodiment. [Figure 29] This is a left side view to aid in explaining the plate, four leaf springs, and four displacement restricting parts that constitute the vehicle vibration damping device in the third embodiment, and corresponds to Figure 3 in the first embodiment described above. [Figure 30] This is a left side view to aid in explaining the plate, four leaf springs, and four displacement restricting parts that constitute the vehicle vibration damping device in the third embodiment, and corresponds to Figure 4 in the first embodiment described above. [Figure 31] This is a left side view to aid in explaining the configuration of the four displacement restricting parts that constitute the vehicle vibration damping device in the third embodiment, and is a view taken in the direction of arrow XXXI in Figure 29. [Figure 32] This is a cross-sectional view to assist in explaining the configuration of the displacement restricting section that constitutes the vehicle vibration damping device in the third embodiment, and is a cross-sectional view obtained by cutting the displacement restricting section with respect to the cutting plane that includes the axis of the pipe. [Figure 33] This is a cross-sectional view to assist in explaining the configuration of the displacement restricting section that constitutes the vehicle vibration damping device in the third embodiment, and is a cross-sectional view obtained by cutting the displacement restricting section with respect to the cutting plane that includes the axis of the pipe. [Figure 34] This is a cross-sectional view to assist in explaining the configuration of the displacement restricting section that constitutes the vehicle vibration damping device in the third embodiment, and is a cross-sectional view obtained by cutting the displacement restricting section with respect to the cutting plane that includes the axis of the pipe. [Figure 35]This is a cross-sectional view to assist in explaining the configuration of the displacement restricting section that constitutes the vehicle vibration damping device in the third embodiment, and is a cross-sectional view obtained by cutting the displacement restricting section with respect to the cutting plane that includes the axis of the pipe. [Figure 36] Figure 29 is a cross-sectional view of the vehicle vibration damping device in the third embodiment, taken from line XXXVI-XXXVI, and is a cross-sectional view intended to assist in the detailed explanation of the structure of the four displacement restricting parts of the vehicle vibration damping device. [Figure 37] This is a left side view to aid in the explanation of the plate, leaf spring, and displacement restricting part that constitute the vehicle vibration damping device in the fourth embodiment. [Figure 38] This is a left side view to aid in the explanation of the plate, leaf spring, and displacement restricting part that constitute the vehicle vibration damping device in the fifth embodiment. [Figure 39] This is a left side view to aid in the explanation of the plate, leaf spring, and displacement restricting part that constitute the vehicle vibration damping device in the sixth embodiment. [Modes for carrying out the invention]

[0019] Embodiments of the present invention will be described below with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other are denoted by the same reference numerals in the drawings in order to simplify the explanation.

[0020] (First Embodiment) Figures 1, 2, 3, and 4 show the vehicle vibration damping device 1 of this embodiment. Figure 1 is a top view of the vehicle vibration damping device 1 of this embodiment, and Figure 2 is a front view of the vehicle vibration damping device 1 of Figure 1, which is the view taken by arrow II in Figure 1. Figure 3 is a left side view of the vehicle vibration damping device 1 of Figure 1, which is the view taken by arrow III in Figure 1. Figure 4 is a right side view of the vehicle vibration damping device 1 of Figure 1, which is the view taken by arrow IV in Figure 1.

[0021] Hereinafter, in this specification, the direction perpendicular to the X direction will be referred to as the Y direction, and the direction perpendicular to both the X and Y directions will be referred to as the Z direction. The X, Y, and Z directions each indicate the direction in which the vehicle vibration damping device 1 of this embodiment is mounted on a vehicle. The Y direction is the vertical direction in which the vehicle vibration damping device 1 of this embodiment is mounted on a vehicle.

[0022] The vehicle vibration isolation device 1 elastically supports the vehicle electric compressor 3 (i.e., vibration source) with respect to the vehicle body side brackets 2a, 2b, 2c, and 2d (i.e., support bodies). The vehicle body side brackets 2a, 2b, 2c, and 2d are each support bodies that constitute part of the vehicle body.

[0023] The vehicle vibration isolation device 1 of this embodiment performs vibration isolation to suppress the transmission of vibrations generated in the vehicle's electric compressor 3 (i.e., the vibration source) to the vehicle body brackets 2a, 2b, 2c, and 2d.

[0024] The vehicle electric compressor 3 comprises an electric compressor body 3a that is formed in a substantially cylindrical shape with an axis extending in the Z direction. The electric compressor body 3a constitutes an electric compression mechanism for an air conditioner.

[0025] The electric compressor body 3a is positioned on the other side in the Y direction (i.e., the lower side) relative to the vehicle body brackets 2a, 2b, 2c, and 2d. On one side of the electric compressor body 3a in the Y direction, there is a support portion 3b that supports the plate 30, which will be described later, from the other side in the Y direction (i.e., the lower side).

[0026] One side of the electric compressor body 3a in the Z direction is provided with a leg 3d that supports the leaf springs 10c and 10d, which will be described later. The other side of the electric compressor body 3a in the Z direction is provided with a leg 3c that supports the leaf springs 10a and 10b, which will be described later.

[0027] As shown in Figures 1, 2, 3, and 4, the vehicle vibration damping device 1 of this embodiment comprises leaf springs 10a, 10b, 10c, 10d, a plate 20, and pipes 30a, 30b, 30c, 30d.

[0028] The vehicle vibration isolation device 1 is provided with bolts 40a, 40b, 40c, 40d, 42a, 42b, 42c, 42d, 50a, 50b, 50c, 50d, 60a, 60b, 60c, 60d, and limiting elastic members 70a, 70b, 70c, 70d.

[0029] The leaf spring 10a shown in Figures 3, 5, 6, and 8 is an elastic member constructed in a plate shape from a metal material. As shown in Figures 3 and 8, the leaf spring 10a includes elastically deformable portions 11a, 12a, and 13a.

[0030] The elastically deformable portion 11a is a long plate member with the A1 direction as its longitudinal direction and thickness in the Z direction (i.e., the first thickness direction). The elastically deformable portion 11a is a first elastically deformable portion formed to extend from the bolts 40a and 42a to one side in the A1 direction. The other side of the elastically deformable portion 11a in the A1 direction is fastened to the leg portion 3c of the vehicle electric compressor 3 by bolts 40a and 42a.

[0031] The elastically deformable portion 12a is a long plate member that protrudes from one end of the elastically deformable portion 11a in the A1 direction to the other end in the A2 direction and has thickness in the Z direction. The elastically deformable portion 13a is a long plate member that is formed to extend from the other end of the elastically deformable portion 12a in the A2 direction to one end in the Z direction (i.e., the back side in the vertical direction of the paper in Figure 3).

[0032] The elastically deformable portion 13a is a second elastically deformable portion that has thickness in the A2 direction (i.e., the second thickness direction). One end of the elastically deformable portion 13a in the Z direction is fixed to the vehicle body bracket 2a by fastening with a bolt 60a, as will be described later.

[0033] Here, direction A1 is the direction that intersects the Y direction, the X direction, and the Z direction. Direction A1 is the direction that moves toward one side of the Y direction as you move toward one side of the X direction.

[0034] The A2 direction intersects the Y direction, the X direction, and the Z direction. The A2 direction moves toward the other side of the Y direction as you move toward one side of the X direction. The A1 and A2 directions intersect each other (for example, are orthogonal).

[0035] In this embodiment, the elastically deformable parts 11a and 12a each vibrate in the Z direction due to vibrations generated in the vehicle's electric compressor 3. The elastically deformable part 13a vibrates in the A2 direction due to vibrations generated in the vehicle's electric compressor 3.

[0036] In this embodiment, the elastically deformable parts 11a, 12a, and 13a each have the same dimensions in the thickness direction. The elastically deformable parts 11a, 12a, and 13a form an integrated, single-piece structure.

[0037] The metal material used to constitute the leaf spring 10a (i.e., the elastically deformable parts 11a, 12a, and 13a) is an iron-containing material such as stainless steel. Therefore, the leaf spring 10a can have stable characteristics such as spring constant from the extremely low temperature range to the high temperature range.

[0038] The leaf spring 10b shown in Figures 3, 9, 10, and 12 is an elastic member constructed in the shape of a plate from a metallic material. As shown in Figures 3 and 12, the leaf spring 10b includes elastic deformation portions 11b, 12b, and 13b. The elastic deformation portion 11b is a long plate member with its longitudinal direction in the A3 direction and thickness in the Z direction (i.e., the first thickness direction).

[0039] The elastic deformation portion 11b is a first elastic deformation portion formed to extend from the bolts 40b and 42b to one side in the A3 direction. The other side of the elastic deformation portion 11b in the A3 direction is fastened to the leg portion 3c of the vehicle electric compressor 3 by bolts 40b and 42b.

[0040] The elastically deformable portion 12b is a long plate member that protrudes from one end of the elastically deformable portion 11b in the A3 direction to the other end in the A4 direction, and has thickness in the Z direction. The elastically deformable portion 13b is a long plate member that is formed to extend from the other end of the elastically deformable portion 12b in the A4 direction to one side in the Z direction (towards the back in the vertical direction of the paper in Figure 3).

[0041] The elastically deformable portion 13b is a third elastically deformable portion that has thickness in the A4 direction (i.e., the third thickness direction). One end of the elastically deformable portion 13b in the Z direction is fixed to the vehicle body bracket 2b by fastening with a bolt 60b, as will be described later.

[0042] Here, direction A3 is the direction that intersects the Y direction, the X direction, and the Z direction. Direction A3 is the direction that moves toward one side of the Y direction as you move toward the other side of the X direction.

[0043] The A4 direction intersects the Y direction, the X direction, and the Z direction. The A4 direction moves toward one side of the Y direction as you move toward one side of the X direction. The A3 and A4 directions intersect each other (for example, are orthogonal).

[0044] In this embodiment, directions A1 and A3 are directions that intersect each other (e.g., orthogonal). Directions A4 and A2 are directions that intersect each other (e.g., orthogonal). Direction A4 is a direction that intersects with respect to the Z direction (e.g., orthogonal). Direction A2 is a direction that intersects with respect to the Z direction (e.g., orthogonal).

[0045] In this embodiment, the elastically deformable parts 11b and 12b each undergo elastic deformation due to vibrations generated in the vehicle's electric compressor 3 and vibrate in the Z direction. The elastically deformable part 13b undergoes elastic deformation due to vibrations generated in the vehicle's electric compressor 3 and vibrates in the A4 direction.

[0046] The elastically deformable parts 11b, 12b, and 13b each have the same dimensions in the thickness direction. The leaf spring 10b (i.e., the elastically deformable parts 11b, 12b, and 13b) constitutes an integrated, single component.

[0047] The metal material used to construct the leaf spring 10b is an iron-containing material such as stainless steel. Therefore, the leaf spring 10b can have stable characteristics such as spring constant from the extremely low temperature range to the high temperature range.

[0048] The leaf spring 10c shown in Figures 4, 13, 14, and 16 is an elastic member constructed in a plate shape from a metal material. The leaf spring 10c includes elastically deformable portions 11c, 12c, and 13c, as shown in Figures 3 and 8.

[0049] The elastically deformable portion 11c is a long plate member with the A1 direction as its longitudinal direction and thickness in the Z direction (i.e., the first thickness direction).

[0050] The elastic deformation portion 11c is a first elastic deformation portion formed to extend from bolts 40c and 42c to one side in the A1 direction. The other side of the elastic deformation portion 11c in the A1 direction is fastened to the leg portion 3d of the vehicle electric compressor 3 by bolts 40c and 42c.

[0051] The elastically deformable portion 12c is a long plate member that protrudes from one end of the elastically deformable portion 11c in the A1 direction to the other end in the A2 direction and has thickness in the Z direction. The elastically deformable portion 13c is a long plate member that is formed to extend from the other end of the elastically deformable portion 12c in the A2 direction to one end in the Z direction.

[0052] The elastically deformable portion 13c is an elastically deformable portion that has thickness in the A2 direction (i.e., the second thickness direction). One end of the elastically deformable portion 13c in the Z direction is fixed to the vehicle body bracket 2c by fastening with a bolt 60c, as will be described later.

[0053] In this embodiment, the elastically deformable parts 11c and 12c each vibrate in the Z direction due to the vibrations generated in the vehicle's electric compressor 3. The elastically deformable part 13c vibrates in the A2 direction due to the vibrations generated in the vehicle's electric compressor 3.

[0054] In this embodiment, the elastically deformable portions 11c, 12c, and 13c each have the same dimensions in the thickness direction. The elastically deformable portions 11c, 12c, and 13c form an integrated, single-piece structure.

[0055] The metal material used to constitute the leaf spring 10c (i.e., the elastically deformable parts 11c, 12c, and 13c) is an iron-containing material such as stainless steel. Therefore, the leaf spring 10c can have stable characteristics such as spring constant from the extremely low temperature range to the high temperature range.

[0056] The leaf spring 10d shown in Figures 4, 17, 18, and 20 is an elastic member constructed in the shape of a plate from a metallic material. The leaf spring 10d includes elastic deformation portions 11d, 12d, and 13d, as shown in Figures 3 and 20. The elastic deformation portion 11d is a long plate member with its longitudinal direction in the A3 direction and thickness in the Z direction (i.e., the first thickness direction).

[0057] The elastic deformation portion 11d is a first elastic deformation portion formed to extend from bolts 40d and 42d to one side in the A3 direction. The other side of the elastic deformation portion 11d in the A3 direction is fastened to the leg portion 3d of the vehicle electric compressor 3 by bolts 40d and 42d.

[0058] The elastically deformable portion 12d is a long plate member that protrudes from one end of the elastically deformable portion 11d in the A3 direction to the other end in the A4 direction and has thickness in the Z direction. The elastically deformable portion 13d is a long plate member that is formed to extend from the other end of the elastically deformable portion 12d in the A2 direction to one end in the Z direction.

[0059] The elastically deformable portion 13d is a third elastically deformable portion that has thickness in the A4 direction (i.e., the third thickness direction). One end of the elastically deformable portion 13d in the Z direction is fixed to the vehicle body bracket 2d by fastening with a bolt 60d, as will be described later.

[0060] In this embodiment, the elastically deformable parts 11d and 12d each vibrate in the Z direction due to the vibrations generated in the vehicle's electric compressor 3. The elastically deformable part 13d vibrates in the A4 direction due to the vibrations generated in the vehicle's electric compressor 3.

[0061] The elastically deformable parts 11d, 12d, and 13d each have the same dimensions in the thickness direction. The leaf spring 10d (i.e., the elastically deformable parts 11d, 12d, and 13d) constitutes an integrated, single component. The metal material used to make up the leaf spring 10d is an iron-containing material such as stainless steel. Therefore, the leaf spring 10d can have stable characteristics such as spring constant from the extremely low temperature range to the high temperature range.

[0062] The plate 20 in Figures 1, 2, 3, and 4 is a flexible metal plate. As shown in Figures 3 and 4, the plate 20 is a supported member comprising a flat plate portion 21, inclined plate portions 22a and 22b, and displacement restricting portions 23a and 23b.

[0063] The plate portion 21 is formed in a plate shape with thickness in the Y direction and extending in the X and Z directions. The plate portion 21a is fastened to the support portion 3b of the vehicle electric compressor 3 by bolts 50a, 50b, 50c, and 50d.

[0064] The plate inclined portion 22a is formed in a way that slopes from one end of the plate flat portion 21 in the X direction toward the other side in the Y direction as it progresses toward the other side in the X direction. In other words, the plate inclined portion 22a is formed in a plate shape having planes that extend in the A2 direction and the Z direction. The plate inclined portion 22a has thickness in the A1 direction.

[0065] The plate displacement restricting portion 23a is formed to extend from one end in the X direction of the plate inclined plate portion 22a to one side in the A1 direction. The plate displacement restricting portion 23a is formed in a plate shape that has thickness in the A2 direction and extends in the Z direction and A1 direction.

[0066] In this embodiment, as shown in Figures 6 and 14, the plate displacement restricting portion 23a has through holes 24a and 24c that penetrate the plate displacement restricting portion 23a itself in the A2 direction. The through holes 24a and 24c are spaced apart in the Z direction. In Figure 6, the cross-sectional hatching of the stopping members 90a and 91a, the pipe 30a, the bolt 60a, and the limiting elastic member 70a is omitted. In Figure 10, the cross-sectional hatching of the stopping members 90c and 91c, the pipe 30c, the bolt 60c, and the limiting elastic member 70c is omitted.

[0067] As shown in Figures 6 and 7, the through-hole 24a is formed in a circular shape centered on the axis S1 extending in the A2 direction. That is, the through-hole 24a is formed in the plate displacement restricting portion 23a so as to expand in the A1 direction and the Z direction. The plate displacement restricting portion 23a has a through-hole forming end portion 26a which forms the through-hole 24a.

[0068] The through-hole forming end 26a restricts the displacement of the vehicle electric compressor 3 in the A1 direction by restricting the displacement of the pipe 30a in the A1 direction, so that the position of the vehicle electric compressor 3 in the A1 direction falls within a predetermined range in the A1 direction. The predetermined range in the A1 direction is set by the through-hole forming end 26a.

[0069] The through-hole forming end 26a restricts the displacement of the vehicle electric compressor 3 in the Z direction by restricting the displacement of the pipe 30a in the Z direction, so that the position of the vehicle electric compressor 3 in the Z direction falls within a predetermined range in the Z direction. The predetermined range in the Z direction is set by the through-hole forming end 26a.

[0070] As shown in Figures 14 and 15, the through-hole 24c is formed in a circular shape centered on the axis S3 extending in the A2 direction. That is, the through-hole 24c is formed in the plate displacement restricting portion 23a so as to expand in the A1 direction and the Z direction. The plate displacement restricting portion 23a has a through-hole forming end portion 26c which forms the through-hole 24c.

[0071] The through-hole forming end 26c restricts the displacement of the vehicle electric compressor 3 in the A1 direction by restricting the displacement of the pipe 30c in the A1 direction, so that the position of the vehicle electric compressor 3 in the A1 direction falls within a predetermined range in the A1 direction. The predetermined range in the A1 direction is set by the through-hole forming end 26c.

[0072] The through-hole forming end 26c restricts the displacement of the vehicle electric compressor 3 in the Z direction by restricting the displacement of the pipe 30c in the Z direction, so that the position of the vehicle electric compressor 3 in the Z direction falls within a predetermined range in the Z direction. The predetermined range in the Z direction is set by the through-hole forming end 26c.

[0073] As shown in Figures 3 and 4, the plate inclined portion 22b is formed in a way that slopes toward the other side in the Y direction as it progresses from the other end of the plate flat portion 21 in the X direction toward the other side in the X direction.

[0074] In other words, the plate inclined portion 22b is formed in a plate shape having planes extending in the A4 direction and the Z direction. The plate inclined portion 22b is formed in a plate shape having thickness in the A3 direction.

[0075] The plate displacement restricting portion 23b is formed to extend from the other end of the plate inclined plate portion 22b in the X direction to one side in the A3 direction. The plate displacement restricting portion 23b is formed in a plate shape that has thickness in the A4 direction and extends in the Z direction and A3 direction.

[0076] In this embodiment, as shown in Figures 10 and 18, the plate displacement restricting portion 23b has through holes 24c and 24d that penetrate the plate displacement restricting portion 23b itself in the A4 direction. The through holes 24c and 24d are spaced apart in the Z direction. In Figure 10, the cross-sectional hatching for the stop members 90b, 91b, pipe 30b, bolt 60b, and limiting elastic member 70b is omitted. In Figure 18, the cross-sectional hatching for the stop members 90d, 91d, pipe 30d, bolt 60d, and limiting elastic member 70d is omitted.

[0077] As shown in Figure 10, the through-hole 24b is formed in a circular shape centered on the axis S2 extending in the A4 direction. That is, the through-hole 24b is formed in the plate displacement restricting portion 23b so as to expand in the A3 direction and the Z direction. The plate displacement restricting portion 23b has a through-hole forming end portion 26b which forms the through-hole 24b.

[0078] The through-hole forming end 26b restricts the displacement of the vehicle electric compressor 3 in the A3 direction by restricting the displacement of the pipe 30b in the A3 direction, so that the position of the vehicle electric compressor 3 in the A3 direction falls within a predetermined range in the A3 direction. The predetermined range in the A3 direction is set by the through-hole forming end 26b.

[0079] The through-hole forming end 26b restricts the displacement of the vehicle electric compressor 3 in the Z direction by restricting the displacement of the pipe 30b in the Z direction, so that the position of the vehicle electric compressor 3 in the Z direction falls within a predetermined range in the Z direction. The predetermined range in the Z direction is set by the through-hole forming end 26b.

[0080] As shown in Figure 18, the through-hole 24d is formed in a circular shape centered on the axis S4 extending in the A4 direction. That is, the through-hole 24d is formed in the plate displacement restricting portion 23b so as to extend in the A3 direction and the Z direction. The through-hole forming end portion 26d that forms the through-hole 24d is formed in the plate displacement restricting portion 23b.

[0081] The through-hole forming end 26d restricts the displacement of the vehicle electric compressor 3 in the A3 direction by restricting the displacement of the pipe 30b in the A3 direction, so that the position of the vehicle electric compressor 3 in the A3 direction falls within a predetermined range in the A3 direction. The predetermined range in the A3 direction is set by the through-hole forming end 26d.

[0082] The through-hole forming end 26d restricts the displacement of the vehicle electric compressor 3 in the Z direction by restricting the displacement of the pipe 30b in the Z direction, so that the position of the vehicle electric compressor 3 in the Z direction falls within a predetermined range in the Z direction. The predetermined range in the Z direction is set by the through-hole forming end 26d.

[0083] As shown in Figures 6 and 7, the limiting elastic member 70a is formed as a thin film covering the through-hole forming end 26a of the plate displacement restricting portion 23a. The limiting elastic member 70a is supported by the plate displacement restricting portion 23a.

[0084] Specifically, the limiting elastic member 70a comprises an inner circumferential elastic member 71a and axial elastic members 72a and 73a.

[0085] The inner circumferential elastic member 71a is formed to cover the through-hole forming end 26a from the radially inward direction centered on the axis S1. The inner circumferential elastic member 71a is formed over the entire circumferential direction centered on the axis S1. The inner circumferential elastic member 71a is supported by the through-hole forming end 26a.

[0086] The axial elastic member 72a is formed to cover the through-hole forming end 26a from one side in the A2 direction. The axial elastic member 72a is formed in an annular shape with the axis S1 as the center.

[0087] The axial elastic member 73a is formed to cover the through-hole forming end 26a from the other side in the A2 direction. The axial elastic member 73a is formed in an annular shape with the axis S1 as its center.

[0088] The inner circumferential elastic member 71a and the axial elastic members 72a and 73a constitute an integrated component. The axial elastic members 72a and 73a are supported by the plate displacement restricting section 23a. The limiting elastic member 70a (i.e., the inner circumferential elastic member 71a and the axial elastic members 72a and 73a) is made of rubber material such as EPDM or natural rubber.

[0089] The limiting elastic member 70a restricts, by elastic deformation, the force applied from at least one of the pipes 30a and the stopping members 90a and 91a to the plate displacement restricting portion 23a of the plate 20 when that member stops the plate 20.

[0090] As shown in Figures 10 and 11, the limiting elastic member 70b is formed as a thin film covering the through-hole forming end 26b of the plate displacement restricting portion 23b. The limiting elastic member 70b is supported by the plate displacement restricting portion 23b.

[0091] Specifically, the limiting elastic member 70b comprises an inner circumferential elastic member 71b and axial elastic members 72b and 73b.

[0092] The inner circumferential elastic member 71b is formed to cover the through-hole forming end 26b from the radially inward direction centered on the axis S2. The inner circumferential elastic member 71b is formed over the entire circumferential direction centered on the axis S2. The inner circumferential elastic member 71b is supported by the through-hole forming end 26b.

[0093] The axial elastic member 72b is formed to cover the through-hole forming end 26a from one side in the A4 direction. The axial elastic member 72b is formed in an annular shape with the axis S2 as the center. The axial elastic member 73b is formed to cover the through-hole forming end 26b from the other side in the A4 direction. The axial elastic member 73b is formed in an annular shape with the axis S2 as the center.

[0094] The inner circumferential elastic member 71b and the axial elastic members 72b and 73b constitute an integrated component. The axial elastic members 72b and 73b are supported by the plate displacement restricting section 23b. The limiting elastic member 70b (i.e., the inner circumferential elastic member 71b and the axial elastic members 72b and 73b) is made of a rubber material such as EPDM or natural rubber.

[0095] The limiting elastic member 70b restricts, by elastic deformation, the force applied from at least one of the pipes 30b, stopping members 90b, and 91b to the plate displacement restricting portion 23b of the plate 20 when that member stops the plate 20.

[0096] As shown in Figures 14 and 15, the limiting elastic member 70c is formed as a thin film covering the through-hole forming end 26c of the plate displacement restricting portion 23a. The limiting elastic member 70c is supported by the plate displacement restricting portion 23a. Specifically, the limiting elastic member 70c comprises an inner circumferential elastic member 71c and axial elastic members 72c and 73c.

[0097] The inner circumferential elastic member 71c is formed to cover the through-hole forming end 26c from the radially inward direction centered on the axis S3. The inner circumferential elastic member 71c is formed over the entire circumferential direction centered on the axis S3. The inner circumferential elastic member 71c is supported by the through-hole forming end 26c.

[0098] The axial elastic member 72c is formed to cover the through-hole forming end 26c from one side in the A2 direction. The axial elastic member 72c is formed in an annular shape with the axis S3 as the center.

[0099] The axial elastic member 73c is formed to cover the through-hole forming end 26c from the other side in the A2 direction. The axial elastic member 73c is formed in an annular shape with the axis S2 as its center.

[0100] The inner circumferential elastic member 71c and the axial elastic members 72c and 73c form an integrated component. The axial elastic members 72c and 73c are supported by the plate displacement restricting portion 23a.

[0101] The limiting elastic members 70c (i.e., the inner circumferential elastic member 71c and the axial elastic members 72c, 73c) are made of rubber material such as EPDM or natural rubber.

[0102] The limiting elastic member 70c restricts, by elastic deformation, the force applied from at least one of the pipes 30c, stopping members 90c, and 91c to the plate displacement restricting portion 23a of the plate 20 when that member stops the plate 20.

[0103] As shown in Figures 18 and 19, the limiting elastic member 70d is formed as a thin film covering the through-hole forming end 26d of the plate displacement restricting portion 23b. The limiting elastic member 70d is supported by the plate displacement restricting portion 23b.

[0104] Specifically, the limiting elastic member 70d comprises an inner circumferential elastic member 71d and axial elastic members 72d and 73d.

[0105] The inner circumferential elastic member 71d is formed to cover the through-hole forming end 26d from the radially inward direction centered on the axis S4. The inner circumferential elastic member 71d is formed over the entire circumferential direction centered on the axis S4. The inner circumferential elastic member 71d is supported by the through-hole forming end 26d.

[0106] The axial elastic member 72d is formed to cover the through-hole forming end 26d from one side in the A4 direction. The axial elastic member 72d is formed in an annular shape with the axis S4 as the center. The axial elastic member 73d is formed to cover the through-hole forming end 26d from the other side in the A4 direction. The axial elastic member 73d is formed in an annular shape with the axis S4 as the center.

[0107] The inner circumferential elastic member 71d and the axial elastic members 72d and 73d constitute an integrated component. The axial elastic members 72d and 73d are supported by the plate displacement restricting portion 23b.

[0108] The limiting elastic members 70d (i.e., the inner circumferential elastic member 71d and the axial elastic members 72d, 73d) are made of rubber material such as EPDM or natural rubber.

[0109] The limiting elastic member 70d restricts, by elastic deformation, the force applied from at least one of the pipes 30d, stopping members 90d, and 91d to the plate displacement restricting portion 23b of the plate 20 when that member stops the plate 20.

[0110] The pipe 30a in Figures 6 and 7 is formed in a circular shape centered on the axis S1 and has a hollow section 31a that penetrates in the direction A2. As a displacement support member, the pipe 30a penetrates the through hole 24a of the plate displacement restricting section 23a of the plate 20, and supports the plate displacement restricting section 23a of the plate 20 so that the plate displacement restricting section 23a of the plate 20 can be displaced in the direction A2.

[0111] The stopping member 90a, as a first stopping member, is positioned on one side in the A2 direction relative to the plate displacement restricting portion 23a of the plate 20. The stopping member 90a is formed by the end portion in the Z direction of the elastic deformation portion 13a of the leaf spring 10a.

[0112] The stopping member 90a is sandwiched between the vehicle body bracket 2a and the pipe 30a. The stopping member 90a is provided with a through hole 100a that penetrates in the direction A2. The through hole 100a is located on one side of the pipe 30a in the direction A2.

[0113] In this embodiment, the stopping member 90a acts as a first restricting member, interfering with the plate displacement restricting member 23a of the plate 20 to prevent the plate displacement restricting member 23a of the plate 20 from being displaced to one side in the A2 direction (i.e., the first displacement direction).

[0114] The stopping member 91a is a flange that protrudes circumferentially from the other end of the pipe 30a in the A2 direction radially outward with respect to the axis S1, as a second stopping member. The stopping member 91a is provided at the other end of the pipe 30a in the A2 direction.

[0115] The stopping member 91a is supported at the other end of the pipe 30a in the A2 direction. The stopping member 91a is positioned on the other side in the A2 direction relative to the plate displacement restricting portion 23a of the plate 20.

[0116] The stopping member 91a, acting as a first restricting member, interferes with the plate displacement restricting member 23a of the plate 20, preventing the plate displacement restricting member 23a of the plate 20 from being displaced to the other side in the A2 direction (i.e., the first displacement direction).

[0117] The stopping members 90a and 91a restrict the displacement of the vehicle electric compressor 3 in the A2 direction by restricting the displacement of the plate displacement restricting section 23a in the A2 direction, thereby restricting the displacement of the vehicle electric compressor 3 so that its position in the A2 direction falls within a predetermined range in the A2 direction. The predetermined range in the A2 direction is set by the stopping members 90a and 91a.

[0118] In this embodiment, the pipe 30a, the stopping members 91a and 90a, and the limiting elastic member 70a constitute a displacement restricting section 110a that restricts the displacement of the plate displacement restricting section 23a of the plate 20.

[0119] The bolt 60a fastens the pipe 30a and the elastically deformed portion 13a of the leaf spring 10a (i.e., the stop member 90a) to the vehicle body bracket 2a, with the bolt passing through the hollow portion 31a of the pipe 30a and the through hole 100a of the stop member 90a.

[0120] In this embodiment, the through-hole 24a of the plate displacement restricting portion 23a of the plate 20 is provided extending in the A1 direction and the Z direction. Therefore, the plate displacement restricting portion 23a of the plate 20 is supported by the pipe 30a so that it can be displaced in the A1 direction, the A2 direction and the Z direction.

[0121] The pipe 30b in Figures 10 and 11 is formed in a circular shape centered on the axis S2 and has a hollow section 31b that penetrates in the direction A4. As a displacement support member, the pipe 30b penetrates the through hole 24b of the plate displacement restricting section 23b of the plate 20 and supports the plate displacement restricting section 23b of the plate 20 so that the plate displacement restricting section 23b of the plate 20 can be displaced in the direction A4.

[0122] The stopping member 90b, as a first stopping member, is positioned on one side in the A4 direction relative to the plate displacement restricting portion 23b of the plate 20. The stopping member 90b is formed by the end on one side in the Z direction of the elastic deformation portion 13b of the leaf spring 10b.

[0123] The stopping member 90b is sandwiched between the vehicle body bracket 2b and the pipe 30b. The stopping member 90b is provided with a through hole 100b that penetrates in the direction A4. The through hole 100b is located on one side of the pipe 30b in the direction A4.

[0124] In this embodiment, the stopping member 90b, as the first restricting member, interferes with the plate displacement restricting member 23b of the plate 20, preventing the plate displacement restricting member 23b of the plate 20 from being displaced to one side in the A4 direction (i.e., the first displacement direction).

[0125] The stopping member 91b is a flange that protrudes circumferentially from the other end of the pipe 30b in the A4 direction radially outward with respect to the axis S2, as a second stopping member. The stopping member 91b is provided at the other end of the pipe 30b in the A4 direction.

[0126] The stopping member 91b is supported at the other end of the pipe 30b in the A4 direction. The stopping member 91b is positioned on the other side in the A2 direction relative to the plate displacement restricting portion 23b of the plate 20.

[0127] In this embodiment, the stopping member 91b, as a first restricting member, interferes with the plate displacement restricting member 23b of the plate 20, preventing the plate displacement restricting member 23b of the plate 20 from being displaced to the other side in the A4 direction (i.e., the first displacement direction).

[0128] The stopping members 90b and 91b restrict the displacement of the vehicle electric compressor 3 in the A4 direction by restricting the displacement of the plate displacement restricting section 23b in the A4 direction, thereby restricting the displacement of the vehicle electric compressor 3 so that its position in the A4 direction falls within a predetermined range in the A4 direction. The predetermined range in the A4 direction is set by the stopping members 90b and 91b.

[0129] In this embodiment, the pipe 30b, the stopping members 91b, 90b, and the limiting elastic member 70b constitute a displacement restricting section 110b that restricts the displacement of the plate displacement restricting section 23a of the plate 20.

[0130] The bolt 60b fastens the pipe 30b and the elastically deformed portion 13b of the leaf spring 10b (i.e., the stop member 90b) to the vehicle body bracket 2b, with the bolt 60b passing through the hollow portion 31b of the pipe 30b and the through hole 100b of the stop member 90b.

[0131] In this embodiment, the through-hole 24b of the plate displacement restricting portion 23b of the plate 20 is provided in the A3 direction and the Z direction. Therefore, the plate displacement restricting portion 23b of the plate 20 is supported by the pipe 30b so that it can be displaced in the A3 direction, the A4 direction and the Z direction.

[0132] The pipe 30c in Figures 14 and 15 is formed in a circular shape with axis S3 as the center and has a hollow section 31c that penetrates in the direction A2. As a displacement support member, the pipe 30c penetrates the through hole 24c of the plate displacement restricting section 23a of the plate 20 and supports the plate displacement restricting section 23a of the plate 20 so that the plate displacement restricting section 23a of the plate 20 can be displaced in the direction A2.

[0133] The stopping member 90c is positioned as a first stopping member on one side in the A2 direction relative to the plate displacement restricting portion 23a of the plate 20. The stopping member 90c is formed by the end on one side in the Z direction of the elastic deformation portion 13c of the leaf spring 10c.

[0134] The stopping member 90c is sandwiched between the vehicle body bracket 2c and the pipe 30c. The stopping member 90c is provided with a through hole 100c that penetrates in the direction A2. The through hole 100c is located on one side of the pipe 30c in the direction A2.

[0135] In this embodiment, the stopping member 90c acts as a first restricting member, interfering with the plate displacement restricting member 23a of the plate 20 to prevent the plate displacement restricting member 23a of the plate 20 from being displaced to one side in the A2 direction (i.e., the first displacement direction).

[0136] The stopping member 91c is a flange that protrudes circumferentially from the other end of the pipe 30c in the A2 direction, radially outward, with the axis S3 as the center, as a second stopping member. The stopping member 91c is provided at the other end of the pipe 30c in the A2 direction.

[0137] The stopping member 91c is supported at the other end of the pipe 30c in the A2 direction. The stopping member 91c is positioned on the other side in the A4 direction relative to the plate displacement restricting portion 23a of the plate 20.

[0138] In this embodiment, the stopping member 91c acts as a first restricting member, interfering with the plate displacement restricting member 23a of the plate 20 and preventing the plate displacement restricting member 23a of the plate 20 from being displaced to the other side in the A2 direction (i.e., the first displacement direction).

[0139] The stopping members 90c and 91c restrict the displacement of the vehicle electric compressor 3 in the A2 direction by restricting the displacement of the plate displacement restricting section 23a in the A2 direction, thereby restricting the displacement of the vehicle electric compressor 3 so that its position in the A2 direction falls within a predetermined range in the A2 direction. The predetermined range in the A2 direction is set by the stopping members 90c and 91c.

[0140] In this embodiment, the pipe 30c, the stopping members 91c and 90c, and the limiting elastic member 70c constitute a displacement restricting section 110c that restricts the displacement of the plate displacement restricting section 23a of the plate 20.

[0141] The bolt 60c fastens the pipe 30c and the leaf spring 10c (i.e., the stop member 90c) to the vehicle body bracket 2c, passing through the hollow portion 31c of the pipe 30c and the through hole 100c of the stop member 90c.

[0142] In this embodiment, the through-hole 24c of the plate displacement restricting portion 23a of the plate 20 is provided in both the A1 and Z directions. Therefore, the plate displacement restricting portion 23a of the plate 20 is supported by the pipe 30c so that it can be displaced in the A1, A2, and Z directions.

[0143] The pipe 30d in Figures 18 and 19 is formed in a circular shape with axis S4 as the center and has a hollow section 31d that penetrates in the direction A4. As a displacement support member, the pipe 30d penetrates the through hole 24d of the plate displacement restricting section 23b of the plate 20 and supports the plate displacement restricting section 23b of the plate 20 so that the plate displacement restricting section 23b of the plate 20 can be displaced in the direction A4.

[0144] The stopping member 90d, as a first stopping member, is positioned on one side in the A4 direction relative to the plate displacement restricting portion 23b of the plate 20. The stopping member 90d is formed by the end portion in the Z direction of the elastic deformation portion 13d of the leaf spring 10d.

[0145] The stopping member 90d is sandwiched between the vehicle body bracket 2d and the pipe 30d. The stopping member 90d is provided with a through hole 100d that penetrates in the direction A4. The through hole 100d is located on one side of the pipe 30d in the direction A4.

[0146] In this embodiment, the stopping member 90d acts as a first restricting member, interfering with the plate displacement restricting member 23b of the plate 20 to prevent the plate displacement restricting member 23b of the plate 20 from being displaced to one side in the A4 direction (i.e., the first displacement direction).

[0147] The stopping member 91d is a flange that protrudes circumferentially radially outward from the other end of the pipe 30d in the A4 direction, with axis S2 as the center. The stopping member 91d is provided at the other end of the pipe 30d in the A4 direction.

[0148] The stopping member 91d is supported at the other end of the pipe 30d in the A4 direction. The stopping member 91d, as a second stopping member, is positioned on the other side in the A2 direction relative to the plate displacement restricting portion 23b of the plate 20.

[0149] In this embodiment, the stopping member 91d acts as a first restricting member, interfering with the plate displacement restricting member 23b of the plate 20 and preventing the plate displacement restricting member 23b of the plate 20 from being displaced to the other side in the A4 direction (i.e., the first displacement direction).

[0150] The stopping members 90d and 91d restrict the displacement of the vehicle electric compressor 3 in the A4 direction by restricting the displacement of the plate displacement restricting section 23d in the A4 direction, thereby restricting the displacement of the vehicle electric compressor 3 so that its position in the A4 direction falls within a predetermined range in the A4 direction. The predetermined range in the A4 direction is set by the stopping members 90d and 91d.

[0151] In this embodiment, the stopping members 90a, 91a, 90b, 91b, 90c, 91c, 90d, and 91d restrict the displacement of the plate displacement restricting portion 23b of the plate 20 in the A4 direction.

[0152] In this embodiment, the pipe 30d, the stopping members 91d and 90d, and the limiting elastic member 70d constitute a displacement restricting section 110d that restricts the displacement of the plate displacement restricting section 23a of the plate 20.

[0153] The bolt 60d fastens the pipe 30d and the elastically deformed portion 13d of the leaf spring 10d (i.e., the stop member 90d) to the vehicle body bracket 2d, with the bolt passing through the hollow portion 31d of the pipe 30d and the through hole 100d of the stop member 90d.

[0154] In this embodiment, the through-hole 24d of the plate displacement restricting portion 23b of the plate 20 is provided in the A3 direction and the Z direction. Therefore, the plate displacement restricting portion 23b of the plate 20 is supported by the pipe 30d so that it can be displaced in the A3 direction, the A4 direction and the Z direction.

[0155] Next, the operation of the vehicle vibration damping device 1 of this embodiment will be described.

[0156] When the vehicle's electric compressor 3 starts operating, it generates vibrations. These vibrations are transmitted to the leaf springs 10a, 10b, 10c, and 10d.

[0157] At this time, the elastic deformation parts 11a and 12a of the leaf spring 10a and the elastic deformation parts 11c and 12c of the leaf spring 10c are each elastically deformed and vibrate in the Z direction due to vibrations from the vehicle's electric compressor 3. The elastic deformation parts 11b and 12b of the leaf spring 10b and the elastic deformation parts 11d and 12d of the leaf spring 10d are each elastically deformed and vibrate in the Z direction due to vibrations from the vehicle's electric compressor 3.

[0158] Therefore, the elastic deformation parts 11a, 12a, 11c, 12c, 11b, 12b, and 11d, 12d dampen vibrations in the Z direction. As a result, the transmission of vibrations in the Z direction from the vehicle electric compressor 3 to the vehicle body brackets 2a, 2b, 2c, and 2d is suppressed.

[0159] Furthermore, the elastic deformation portion 13a of the leaf spring 10a and the elastic deformation portion 13c of the leaf spring 10c each undergo elastic deformation and vibrate in the A2 direction due to vibrations from the vehicle's electric compressor 3. As a result, the elastic deformation portions 13a and 13c dampen vibrations in the A2 direction. Consequently, the transmission of vibrations in the A2 direction from the vehicle's electric compressor 3 to the vehicle body brackets 2a and 2c is suppressed.

[0160] Furthermore, the elastic deformation portion 13b of the leaf spring 10b and the elastic deformation portion 13d of the leaf spring 10d each undergo elastic deformation due to vibrations from the vehicle's electric compressor 3 and vibrate in the A4 direction. As a result, the elastic deformation portions 13b and 13d dampen vibrations in the A4 direction. Consequently, the transmission of vibrations in the A4 direction from the vehicle's electric compressor 3 to the vehicle body brackets 2b and 2d is suppressed.

[0161] As a result, vibrations in the A2 direction, A4 direction, and Z direction from the vehicle's electric compressor 3 are suppressed from being transmitted to the vehicle body brackets 2a, 2b, 2c, and 2d.

[0162] Furthermore, vibrations generated in the vehicle's electric compressor 3 are transmitted to the plate 20. As a result, the plate 20 vibrates due to elastic deformation caused by the vibrations from the vehicle's electric compressor 3.

[0163] At this time, the plate displacement restricting portions 23a and 23b of the plate 20 vibrate in at least one direction from among the A1, A2, A3, A4, and Z directions.

[0164] In this case, the displacement restricting sections 110a and 110c restrict the displacement of the plate displacement restricting section 23a of the plate 20, respectively. The displacement restricting sections 110b and 110d restrict the displacement of the plate displacement restricting section 23b of the plate 20, respectively.

[0165] The operation of each of the displacement restricting sections 110a, 110b, 110c, and 110d will be explained independently below. (Regarding the operation of the displacement restricting unit 110a) The plate displacement restricting portion 23a of the plate 20 is displaced to one side in the A1 direction, causing the inner circumferential elastic member 71a of the limiting elastic member 70a to come into contact with the pipe 30a. As a result, the pipe 30a (i.e., the second restricting portion) interferes with the through-hole forming end 26a of the plate displacement restricting portion 23a of the plate 20, preventing the plate displacement restricting portion 23a of the plate 20 from being displaced to one side in the A1 direction (i.e., the second displacement direction).

[0166] The plate displacement restricting portion 23a of plate 20 is displaced to the other side in the A1 direction, causing the inner circumferential elastic member 71a of the restricting elastic member 70a to come into contact with pipe 30a. As a result, pipe 30a interferes with the through-hole forming end 26a of the plate displacement restricting portion 23a of plate 20, preventing the plate displacement restricting portion 23a of plate 20 from being displaced to the other side in the A1 direction.

[0167] As a result, the pipe 30a restricts the displacement of the plate displacement restricting portion 23a of the plate 20 in the A1 direction, thereby restricting the displacement of the vehicle electric compressor 3 so that its position in the A1 direction falls within a predetermined range in the A1 direction.

[0168] The plate displacement restricting portion 23a of the plate 20 is displaced to one side in the Z direction, causing the inner circumferential elastic member 71a of the limiting elastic member 70a to come into contact with the pipe 30a. As a result, the pipe 30a (i.e., the third restricting portion) interferes with the through-hole forming end 26a of the plate displacement restricting portion 23a of the plate 20, preventing the plate displacement restricting portion 23a of the plate 20 from being displaced to one side in the Z direction (i.e., the third displacement direction).

[0169] The plate displacement restricting portion 23a of the plate 20 is displaced to the other side in the Z direction, causing the inner circumferential elastic member 71a of the restricting elastic member 70a to come into contact with the pipe 30a. As a result, the pipe 30a interferes with the through-hole forming end 26a of the plate displacement restricting portion 23a of the plate 20, preventing the plate displacement restricting portion 23a of the plate 20 from being displaced to the other side in the Z direction.

[0170] As a result, the pipe 30a restricts the Z-direction displacement of the plate displacement restricting portion 23a of the plate 20, thereby restricting the displacement of the vehicle electric compressor 3 so that its position in the Z-direction falls within a predetermined range in the Z-direction.

[0171] In this way, the displacement of the plate displacement restricting portion 23a of the plate 20 is prevented by the pipe 30a. Accordingly, the inner circumferential elastic member 71a of the limiting elastic member 70a, acting as a third limiting member, undergoes elastic deformation due to the force applied from the pipe 30a to the plate displacement restricting portion 23a of the plate 20.

[0172] As a result, the inner circumferential elastic member 71a restricts the force that can be applied from the pipe 30a to the plate displacement restricting portion 23a of the plate 20. Therefore, it is possible to suppress the generation of a knocking sound by the force applied from the pipe 30a to the plate displacement restricting portion 23a of the plate 20.

[0173] The plate displacement restricting portion 23a of plate 20 is displaced to one side in the A2 direction, causing the axial elastic member 72a of the limiting elastic member 70a to come into contact with the stopping member 90a. As a result, the stopping member 90a interferes with the plate displacement restricting portion 23a of plate 20, preventing the plate displacement restricting portion 23a of plate 20 from being displaced to one side in the A2 direction.

[0174] In this case, the axial elastic member 72a of the limiting elastic member 70a, acting as the first limiting member, elastically deforms due to the force applied from the stopping member 90a to the plate displacement restricting portion 23a of the plate 20.

[0175] As a result, the axial elastic member 72a restricts the force that the stopping member 90a applies to the plate displacement restricting portion 23a of the plate 20. Therefore, it is possible to suppress the generation of a knocking sound by the force applied to the plate displacement restricting portion 23a of the plate 20 from the stopping member 90a.

[0176] The plate displacement restricting portion 23a of plate 20 is displaced to the other side in the A2 direction, causing the axial elastic member 73a of the limiting elastic member 70a to come into contact with the stopping member 91a. As a result, the stopping member 91a interferes with the plate displacement restricting portion 23a of plate 20, preventing the plate displacement restricting portion 23a of plate 20 from being displaced to the other side in the A2 direction.

[0177] In this case, the axial elastic member 73a of the limiting elastic member 70a is elastically deformed by the force applied from the stopping member 91a to the plate displacement restricting portion 23a of the plate 20, acting as a second limiting member.

[0178] This restricts the force that can be applied from the stopping member 91a to the plate displacement restricting portion 23a of the plate 20. Therefore, it is possible to suppress the generation of a knocking sound by the force applied from the stopping member 91a to the plate displacement restricting portion 23a of the plate 20.

[0179] As a result, the displacement of the plate displacement restricting portion 23a of the plate 20 in the A2 direction is restricted by the stopping members 91a and 90a, thereby restricting the displacement of the vehicle electric compressor 3 so that its position in the A2 direction falls within a predetermined range in the A2 direction.

[0180] In this manner, the plate displacement restricting portion 23a of the plate 20 is stopped by at least one of the pipe 30a, the stopping members 90a, and 91a. At this time, the plate 20 elastically deforms and bends due to the force applied from the pipe 30a to the plate displacement restricting portion 23a of the plate 20.

[0181] Therefore, it is possible to suppress the transmission of force from at least one of the pipes 30a, stopping members 90a, and 91a to the vehicle electric compressor 3 via the plate 20. Thus, it is possible to further suppress the generation of knocking noise caused by the force applied from at least one of the pipes 30a, stopping members 90a, and 91a to the plate displacement restricting portion 23a of the plate 20. (Regarding the operation of the displacement restricting unit 110b) The plate displacement restricting portion 23b of plate 20 is displaced to one side in the A3 direction, causing the inner circumferential elastic member 71b of the restricting elastic member 70b to come into contact with pipe 30b. As a result, pipe 30b (i.e., the second restricting portion) interferes with the through-hole forming end 26b of the plate displacement restricting portion 23b of plate 20, preventing the plate displacement restricting portion 23b of plate 20 from being displaced to one side in the A3 direction (i.e., the second displacement direction).

[0182] The plate displacement restricting portion 23b of plate 20 is displaced to the other side in the A3 direction, causing the inner circumferential elastic member 71b of the restricting elastic member 70b to come into contact with pipe 30b. As a result, pipe 30b interferes with the through-hole forming end 26b of the plate displacement restricting portion 23b of plate 20, preventing the plate displacement restricting portion 23b of plate 20 from being displaced to the other side in the A3 direction.

[0183] As a result, the pipe 30b restricts the displacement of the plate displacement restricting portion 23b of the plate 20 in the A3 direction, thereby restricting the displacement of the vehicle electric compressor 3 so that its position in the A3 direction falls within a predetermined range in the A3 direction.

[0184] The plate displacement restricting portion 23b of the plate 20 is displaced to one side in the Z direction, causing the inner circumferential elastic member 71b of the restricting elastic member 70b to come into contact with the pipe 30b. As a result, the pipe 30b interferes with the through-hole forming end 26b of the plate displacement restricting portion 23b of the plate 20, preventing the plate displacement restricting portion 23b of the plate 20 from being displaced to one side in the Z direction.

[0185] The plate displacement restricting portion 23b of the plate 20 is displaced to the other side in the Z direction, causing the inner circumferential elastic member 71b of the restricting elastic member 70b to come into contact with the pipe 30b. As a result, the pipe 30b interferes with the through-hole forming end 26b of the plate displacement restricting portion 23b of the plate 20, preventing the plate displacement restricting portion 23b of the plate 20 from being displaced to the other side in the Z direction.

[0186] As a result, the pipe 30b restricts the Z-direction displacement of the plate displacement restricting portion 23b of the plate 20, thereby restricting the displacement of the vehicle electric compressor 3 so that its position in the Z-direction falls within a predetermined range in the Z-direction.

[0187] In this way, the displacement of the plate displacement restricting portion 23b of the plate 20 is prevented by the pipe 30b. Consequently, the inner circumferential elastic member 71b of the limiting elastic member 70b, acting as a third limiting member, elastically deforms in response to the force applied from the pipe 30b to the plate displacement restricting portion 23b of the plate 20. As a result, the inner circumferential elastic member 71b restricts the force that can be applied from the pipe 30b to the plate displacement restricting portion 23b of the plate 20.

[0188] Therefore, the plate displacement restricting portion 23b of the plate 20 can suppress the generation of a striking sound due to the force applied from the pipe 30b.

[0189] The plate displacement restricting portion 23b of plate 20 is displaced to one side in the A4 direction, causing the axial elastic member 72a of the limiting elastic member 70b to come into contact with the stopping member 90b. As a result, the stopping member 90b interferes with the plate displacement restricting portion 23b of plate 20, preventing the plate displacement restricting portion 23b of plate 20 from being displaced to one side in the A4 direction.

[0190] In this case, the axial elastic member 72b of the limiting elastic member 70b, acting as the first limiting member, elastically deforms due to the force applied from the stopping member 90b to the plate displacement restricting portion 23b of the plate 20.

[0191] As a result, the axial elastic member 72b restricts the force that the stopping member 90b applies to the plate displacement restricting portion 23b of the plate 20. Therefore, it is possible to suppress the generation of a knocking sound by the force applied to the plate displacement restricting portion 23b of the plate 20 from the stopping member 90b.

[0192] The plate displacement restricting portion 23b of plate 20 is displaced to the other side in the A4 direction, causing the axial elastic member 73b of the limiting elastic member 70b to come into contact with the stopping member 91b. As a result, the stopping member 91b interferes with the plate displacement restricting portion 23b of plate 20, preventing the plate displacement restricting portion 23b of plate 20 from being displaced to the other side in the A4 direction.

[0193] In this case, the axial elastic member 73b of the limiting elastic member 70b, acting as a second limiting member, elastically deforms due to the force applied from the stopping member 91b to the plate displacement restricting portion 23b of the plate 20.

[0194] As a result, the axial elastic member 73b restricts the force that the stopping member 91b applies to the plate displacement restricting portion 23b of the plate 20. Therefore, it is possible to suppress the generation of a knocking sound by the force applied to the plate displacement restricting portion 23b of the plate 20 from the stopping member 91b.

[0195] As a result, the displacement of the plate displacement restricting portion 23b of the plate 20 in the A4 direction is restricted by the stopping members 91b and 90b, thereby restricting the displacement of the vehicle electric compressor 3 so that its position in the A4 direction falls within a predetermined range in the A4 direction.

[0196] In this way, the plate displacement restricting portion 23b of the plate 20 is stopped by at least one of the pipe 30b, the stopping members 90b, and 91b. At this time, the plate 20 elastically deforms and bends due to the force applied from the pipe 30b to the plate displacement restricting portion 23b of the plate 20.

[0197] Therefore, it is possible to suppress the transmission of force from at least one of the pipes 30b, stopping members 90b, and 91b to the vehicle electric compressor 3 via the plate 20. Thus, it is possible to further suppress the generation of knocking noise caused by the force applied from at least one of the pipes 30b, stopping members 90b, and 91b to the plate displacement restricting portion 23b of the plate 20. (Regarding the operation of the displacement restricting section 110c) The plate displacement restricting portion 23a of the plate 20 is displaced to one side in the A1 direction, causing the inner circumferential elastic member 71c of the restricting elastic member 70c to come into contact with the pipe 30c. As a result, the pipe 30c (i.e., the second restricting portion) interferes with the through-hole forming end 26c of the plate displacement restricting portion 23a of the plate 20, preventing the plate displacement restricting portion 23a of the plate 20 from being displaced to one side in the A1 direction (i.e., the second displacement direction).

[0198] The plate displacement restricting portion 23a of plate 20 is displaced to the other side in the A1 direction, causing the inner circumferential elastic member 71c of the restricting elastic member 70c to come into contact with pipe 30c. As a result, pipe 30c interferes with the through-hole forming end 26c of the plate displacement restricting portion 23a of plate 20, preventing the plate displacement restricting portion 23a of plate 20 from being displaced to the other side in the A1 direction.

[0199] As a result, the pipe 30c restricts the displacement of the plate displacement restricting portion 23a of the plate 20 in the A1 direction, thereby restricting the displacement of the vehicle electric compressor 3 so that its position in the A1 direction falls within a predetermined range in the A1 direction.

[0200] The plate displacement restricting portion 23a of the plate 20 is displaced to one side in the Z direction, causing the inner circumferential elastic member 71c of the restricting elastic member 70c to come into contact with the pipe 30c. As a result, the pipe 30c interferes with the through-hole forming end 26c of the plate displacement restricting portion 23a of the plate 20, preventing the plate displacement restricting portion 23a of the plate 20 from being displaced to one side in the Z direction.

[0201] The plate displacement restricting portion 23a of plate 20 is displaced to the other side in the Z direction, causing the inner circumferential elastic member 71c of the restricting elastic member 70c to come into contact with pipe 30c. As a result, pipe 30c interferes with the through-hole forming end 26c of the plate displacement restricting portion 23a of plate 20, preventing the plate displacement restricting portion 23a of plate 20 from being displaced to the other side in the Z direction.

[0202] As a result, the pipe 30c restricts the displacement of the plate displacement restricting portion 23a of the plate 20 in the Z direction, thereby restricting the displacement of the vehicle electric compressor 3 so that its position in the Z direction falls within a predetermined range in the Z direction.

[0203] In this way, the displacement of the plate displacement restricting portion 23a of the plate 20 is prevented by the pipe 30c. Consequently, the inner circumferential elastic member 71c of the limiting elastic member 70c, acting as a third limiting member, elastically deforms in response to the force applied from the pipe 30c to the plate displacement restricting portion 23a of the plate 20. As a result, the inner circumferential elastic member 71c restricts the force that can be applied from the pipe 30c to the plate displacement restricting portion 23a of the plate 20.

[0204] Therefore, the plate displacement restricting portion 23a of the plate 20 can suppress the generation of a striking sound due to the force applied from the pipe 30c.

[0205] The plate displacement restricting portion 23a of plate 20 is displaced to one side in the A2 direction, causing the axial elastic member 72c of the limiting elastic member 70c to come into contact with the stopping member 90c. As a result, the stopping member 90c interferes with the plate displacement restricting portion 23a of plate 20, preventing the plate displacement restricting portion 23a of plate 20 from being displaced to one side in the A2 direction.

[0206] In this case, the axial elastic member 72c of the limiting elastic member 70c is elastically deformed by the force applied from the stopping member 90c to the plate displacement restricting portion 23a of the plate 20, acting as the first limiting member.

[0207] As a result, the axial elastic member 72c restricts the force that the stopping member 90c applies to the plate displacement restricting portion 23a of the plate 20. Therefore, it is possible to suppress the generation of a knocking sound by the force applied to the plate displacement restricting portion 23a of the plate 20 from the stopping member 90c.

[0208] The plate displacement restricting portion 23a of plate 20 is displaced to the other side in the A2 direction, causing the axial elastic member 73c of the limiting elastic member 70c to come into contact with the stopping member 91c. As a result, the stopping member 91c interferes with the plate displacement restricting portion 23a of plate 20, preventing the plate displacement restricting portion 23a of plate 20 from being displaced to the other side in the A2 direction.

[0209] In this case, the axial elastic member 73c of the limiting elastic member 70c is elastically deformed as a second limiting member by the force applied from the stopping member 91c to the plate displacement restricting portion 23a of the plate 20.

[0210] As a result, the axial elastic member 73c restricts the force that the stopping member 91c applies to the plate displacement restricting portion 23a of the plate 20. Therefore, it is possible to suppress the generation of a knocking sound by the force applied to the plate displacement restricting portion 23a of the plate 20 from the stopping member 91c.

[0211] As a result, the displacement of the vehicle electric compressor 3 is restricted by the stopping members 91c and 90c so that the position of the vehicle electric compressor 3 in the A2 direction falls within a predetermined range in the A2 direction.

[0212] In this way, the plate displacement restricting portion 23a of the plate 20 is stopped by at least one of the pipe 30c, the stopping members 90c, and 91c. At this time, the plate 20 elastically deforms and bends due to the force applied from the pipe 30c to the plate displacement restricting portion 23a of the plate 20.

[0213] Therefore, it is possible to suppress the transmission of force from at least one of the pipes 30c, stopping members 90c, and 91c to the vehicle electric compressor 3 via the plate 20. Thus, it is possible to further suppress the generation of knocking noise caused by the force applied from at least one of the pipes 30c, stopping members 90c, and 91c to the plate displacement restricting portion 23a of the plate 20. (Regarding the operation of the displacement restricting unit 110d) The plate displacement restricting portion 23b of plate 20 is displaced to one side in the A3 direction, causing the inner circumferential elastic member 71d of the restricting elastic member 70d to come into contact with pipe 30d. As a result, pipe 30d (i.e., the second restricting portion) interferes with the through-hole forming end 26d of the plate displacement restricting portion 23b of plate 20, preventing the plate displacement restricting portion 23b of plate 20 from being displaced to one side in the A3 direction (i.e., the second displacement direction).

[0214] The plate displacement restricting portion 23b of plate 20 is displaced to the other side in the A3 direction, causing the inner circumferential elastic member 71d of the restricting elastic member 70d to come into contact with pipe 30d. As a result, pipe 30d interferes with the through-hole forming end 26d of the plate displacement restricting portion 23b of plate 20, preventing the plate displacement restricting portion 23b of plate 20 from being displaced to the other side in the A3 direction.

[0215] As a result, the pipe 30d restricts the displacement of the plate displacement restricting portion 23b of the plate 20 in the A3 direction, thereby restricting the displacement of the vehicle electric compressor 3 so that its position in the A3 direction falls within a predetermined range in the A3 direction.

[0216] The plate displacement restricting portion 23b of the plate 20 is displaced to one side in the Z direction, causing the inner circumferential elastic member 71d of the restricting elastic member 70d to come into contact with the pipe 30d. As a result, the pipe 30d interferes with the through-hole forming end 26d of the plate displacement restricting portion 23b of the plate 20, preventing the plate displacement restricting portion 23b of the plate 20 from being displaced to one side in the Z direction.

[0217] The plate displacement restricting portion 23b of plate 20 is displaced to the other side in the Z direction, causing the inner circumferential elastic member 71d of the limiting elastic member 70d to come into contact with pipe 30d. As a result, pipe 30d interferes with the through-hole forming end 26d of the plate displacement restricting portion 23b of plate 20, preventing the plate displacement restricting portion 23b of plate 20 from being displaced to the other side in the Z direction.

[0218] As a result, the pipe 30d restricts the displacement of the plate displacement restricting portion 23b of the plate 20 in the Z direction, thereby restricting the displacement of the vehicle electric compressor 3 so that its position in the Z direction falls within a predetermined range in the Z direction.

[0219] In this way, the displacement of the plate displacement restricting portion 23b of the plate 20 is prevented by the pipe 30d. Consequently, the inner circumferential elastic member 71d of the limiting elastic member 70d, acting as a third limiting member, elastically deforms in response to the force applied from the pipe 30d to the plate displacement restricting portion 23b of the plate 20. As a result, the inner circumferential elastic member 71d restricts the force that can be applied from the pipe 30d to the plate displacement restricting portion 23b of the plate 20.

[0220] Therefore, the plate displacement restricting portion 23b of the plate 20 can suppress the generation of a striking sound due to the force applied from the pipe 30d.

[0221] The plate displacement restricting portion 23b of plate 20 is displaced to one side in the A4 direction, causing the axial elastic member 72d of the limiting elastic member 70d to come into contact with the stopping member 90d. As a result, the stopping member 90d interferes with the plate displacement restricting portion 23b of plate 20, preventing the plate displacement restricting portion 23b of plate 20 from being displaced to one side in the A4 direction.

[0222] In this process, the axial elastic member 72d of the limiting elastic member 70d undergoes elastic deformation due to the force applied from the stopping member 90d to the plate displacement restricting portion 23b of the plate 20.

[0223] As a result, the axial elastic member 72d restricts the force that the stopping member 90d applies to the plate displacement restricting portion 23b of the plate 20. Therefore, it is possible to suppress the generation of a knocking sound by the force applied to the plate displacement restricting portion 23b of the plate 20 from the stopping member 90d.

[0224] The plate displacement restricting portion 23b of plate 20 is displaced to the other side in the A4 direction, causing the axial elastic member 73d of the limiting elastic member 70d to come into contact with the stopping member 91d. As a result, the stopping member 91d interferes with the plate displacement restricting portion 23b of plate 20, preventing the plate displacement restricting portion 23b of plate 20 from being displaced to the other side in the A4 direction.

[0225] In this case, the axial elastic member 73d of the limiting elastic member 70d, acting as a second limiting member, elastically deforms due to the force applied from the stopping member 91d to the plate displacement restricting portion 23b of the plate 20.

[0226] As a result, the axial elastic member 73d restricts the force that the stopping member 91d applies to the plate displacement restricting portion 23b of the plate 20. Therefore, it is possible to suppress the generation of a knocking sound by the force applied to the plate displacement restricting portion 23b of the plate 20 from the stopping member 91d.

[0227] As a result, the displacement of the plate displacement restricting portion 23b of the plate 20 in the A4 direction is restricted by the stopping members 91d and 90d, thereby restricting the displacement of the vehicle electric compressor 3 so that its position in the A4 direction falls within a predetermined range in the A4 direction.

[0228] In this manner, the plate displacement restricting portion 23b of the plate 20 is stopped by at least one of the pipe 30d, the stopping members 90b, and 91d. At this time, the plate 20 elastically deforms and bends due to the force applied from the pipe 30d to the plate displacement restricting portion 23b of the plate 20.

[0229] Therefore, it is possible to suppress the transmission of force from at least one of the pipes 30d, stopping members 90d, and 91d to the vehicle electric compressor 3 via the plate 20. Thus, it is possible to further suppress the generation of knocking noise caused by the force applied from at least one of the pipes 30d, stopping members 90d, and 91d to the plate displacement restricting portion 23b of the plate 20.

[0230] Next, the effects of the vehicle vibration damping device 1 of this embodiment will be described with reference to Figures 21, 22, and 23.

[0231] In this embodiment, as shown in Figure 21, the rotation direction with the X direction as the centerline is defined as the θ direction, the rotation direction with the Y direction as the centerline is defined as the Φ direction, and the rotation direction with the Z direction as the centerline is defined as the Ψ direction.

[0232] Let the resonant frequency in the X direction be resonant frequency fx, and the resonant frequency in the Y direction be resonant frequency fy. Let the resonant frequency in the Z direction be resonant frequency fz.

[0233] Let the resonant frequency in the θ direction be resonant frequency fθ, and the resonant frequency in the Φ direction be resonant frequency fΦ. Let the resonant frequency in the Ψ direction be resonant frequency fΨ.

[0234] Hereafter, the resonant frequencies fx, fy, fz, fθ, fΦ, and fΨ will be collectively referred to as resonant frequencies fx, fy, fz, fθ, fΦ, and fΨ. Figure 22 shows that the horizontal axis represents the vibration frequency "Hz", and the vertical axis represents |Fout|, which is the absolute value of the load generated by vibrations occurring on the vehicle's electric compressor 3 alone when the vehicle vibration isolation device 1 is not installed.

[0235] The frequency range in which vibration occurs in the vehicle's electric compressor 3 while the vehicle is traveling on a paved road is defined as the frequency range Fw.

[0236] The frequency range Fa is defined as the frequency range in which vibration occurs in the vehicle's electric compressor 3 when the vehicle is traveling on an unpaved road (i.e., a rough road).

[0237] As can be seen from Figure 22, the resonant frequencies fx, fy, fz, fθ, fΦ, and fΨ of vibrations occurring in the vehicle's electric compressor 3 are distributed across the entire frequency domain Fw. Figure 22 shows the vibration frequency "Hz" on the horizontal axis and the vibration transfer function of the vehicle electric compressor 3 alone on the vertical axis. The transfer functions Pa and Pb in Figure 22 are functions that show the transmission of vibration from the vehicle electric compressor 3 through the vehicle vibration isolation device 1 to the vehicle body side brackets 2a, 2b, 2c, and 2d.

[0238] The transfer function Pa is the transfer function of the vehicle vibration damping device 1 of this embodiment in which the displacement restricting parts 110a, 110b, 110c, and 110d are removed and only the leaf springs 10a, 10b, 10c, and 10d are operating.

[0239] The transfer function Pb is the transfer function when the vehicle vibration damping device 1 and the vehicle electric compressor 3 of this embodiment are mounted on a vehicle and the leaf springs 10a, 10b, 10c, 10d and the displacement restricting parts 110a, 110b, 110c, 110d are in operation.

[0240] Here, the elastic deformation parts 11a, 11b, 11c, 11d, elastic deformation parts 12a, 12b, 12c, 12d, and elastic deformation parts 13a, 13b, 13c, 13d each have the same dimensions in the thickness direction.

[0241] Therefore, the stiffness in the A2, A4, and Z directions of leaf springs 10a and 10b is almost the same. The stiffness in the A2, A4, and Z directions of leaf springs 10c and 10d is also almost the same.

[0242] Therefore, the resonant frequencies fx, fy, fz, fθ, fΦ, and fΨ of the leaf springs 10a, 10b, 10c, and 10d are almost identical. The resonant frequencies fx, fy, fz, fθ, fΦ, and fΨ are set in a frequency range lower than the frequency range Fw.

[0243] Therefore, as shown in Figure 22, in the transfer function Pa, one peak is formed in the frequency domain Fa, which is lower than the frequency domain Fw, at the resonant frequencies fx, fy, fz, fθ, fΦ, and fΨ.

[0244] Therefore, for example, if the displacement restricting parts 110a, 110b, 110c, and 110d in the vehicle vibration damping device 1 are not operating, and only the leaf springs 10a, 10b, 10c, and 10d are operating, the vehicle will travel on an unpaved road.

[0245] As a result, the vehicle's electric compressor 3 and the vehicle's vibration isolation device 1 experience vibrations with a large amplitude in the frequency domain Fa. In this case, the vehicle's electric compressor 3 may interfere with surrounding components (e.g., electrical wires and pipes), potentially causing damage to those components.

[0246] In contrast, when using the vehicle vibration isolation device 1 of this embodiment, in addition to the leaf springs 10a, 10b, 10c, and 10d, the displacement restricting parts 110a, 110b, 110c, and 110d also operate.

[0247] In this case, as shown in the transfer function Pb in Figure 22, one peak formed by the resonant frequencies fx, fy, fz, fθ, fΦ, and fΨ in the frequency domain Fa becomes smaller than that of the transfer function Pa.

[0248] In other words, by using the displacement restricting sections 110a, 110b, 110c, and 110d, the amplitude of vibration of the vehicle's electric compressor 3 can be suppressed when the vehicle travels on an unpaved road.

[0249] In other words, when a vehicle travels on an unpaved road, the leaf springs 10a, 10b, 10c, and 10d reduce the maximum amplitude of the vehicle's electric compressor 3, which is restricted by the displacement restricting sections 110a, 110b, 110c, and 110d.

[0250] The vehicle vibration damping device 1 of this embodiment, as described above, is fixed by vehicle body brackets 2a, 2b, 2c, and 2d, and while supporting the vehicle electric compressor 3, it performs vibration damping to suppress the transmission of vibrations from the vehicle electric compressor 3 to the vehicle body brackets 2a, 2b, 2c, and 2d.

[0251] The vehicle vibration isolation device 1 comprises elastic deformation parts 11a, 11b, 11c, 11d, elastic deformation parts 13a, 13b, 13c, 13d, and displacement restricting parts 110a, 110b, 110c, 110d.

[0252] The elastically deformable portions 11a, 11b, 11c, and 11d are made of a metallic material, formed in a plate shape with thickness in the Z direction (i.e., the first thickness direction), and are elastically deformed by vibration and vibrate in the Z direction.

[0253] The elastically deformable portions 13a and 13c are made of a metallic material and formed in a plate shape with thickness in the A2 direction (i.e., the second thickness direction) when the direction intersecting the Z direction is the A2 direction, and they elastically deform and vibrate in the A2 direction due to vibration.

[0254] The elastically deformable portions 13b and 13d are made of a metallic material and are formed in a plate shape with thickness in the A4 direction (i.e., the third thickness direction), when the direction that intersects the Z direction and the A2 direction is defined as the A4 direction (i.e., the third thickness direction), and they elastically deform due to vibration and vibrate in the A4 direction.

[0255] Therefore, the leaf springs 10a, 10b, 10c, and 10d dampen vibrations in three directions, namely the Z direction, the A2 direction, and the A4 direction, transmitted from the vehicle's electric compressor 3.

[0256] In addition, the displacement restricting units 110a, 110b, 110c, and 110d restrict the displacement of the vehicle electric compressor 3 so that the positions in the A1, A2, A3, A4, and Z directions of the vehicle electric compressor 3 fall within a predetermined range for each direction.

[0257] Here, the predetermined range for each direction is set by the stopping members 90a, 91a, 90b, 91b, 90c, 91c, 90d, 91d and the through-hole forming ends 26a, 26b, 26c, 26d of the plate 20.

[0258] Each of the elastically deformable parts 11a, 11b, 11c, 11d, 13a, 13b, 13c, and 13d is made of a metallic material. Therefore, even when a large load is applied from the vehicle's electric compressor 3 at high temperatures, creep deformation is unlikely to occur in the elastically deformable parts 11a, 11b, 11c, 11d, 13a, 13b, 13c, and 13d.

[0259] Therefore, the elastically deformable parts 11a, 11b, 11c, 11d, 13a, 13b, 13c, and 13d can vibrate due to elastic deformation even when subjected to high temperatures and large loads.

[0260] Therefore, the leaf springs 10a, 10b, 10c, and 10d can dampen vibrations transmitted from the vehicle's electric compressor 3 even when subjected to high temperatures and large loads. As a result, the leaf springs 10a, 10b, 10c, and 10d can appropriately limit the maximum amplitude of the vehicle's electric compressor 3 by the displacement restricting sections 110a, 110b, 110c, and 110d. Figure 24 shows an example in the vehicle vibration isolation device 1A of Patent Document 1, in which a vehicle-side bracket 210 fixed to the vehicle body supports a compressor-side bracket 200 fixed to a vehicle electric compressor 3A from below. The vehicle-side bracket 210 is provided with a guide pin 220 formed to protrude upward. The guide pin 220 restricts the displacement of the compressor-side bracket 200 (i.e., the vehicle electric compressor 3A) so that the position of the compressor-side bracket 200 falls within a predetermined range.

[0261] A cylindrical elastic member 230 made of rubber is positioned between the compressor-side bracket 200 and the vehicle-side bracket 210. The elastic member 230 undergoes elastic deformation, Restrict the vibration of the electric compressor 3A for vehicles. The elastic member 230 forms a lower gap δ between the compressor-side bracket 200 and the lower end portion 221 of the guide pin 220. Therefore, when a large load is applied to the elastic member 230 in a high-temperature state, it undergoes creep deformation. Thus, due to the creep deformation, the lower gap δ becomes smaller, or the lower gap δ disappears due to the self-weight of the electric compressor 3A for vehicles.

[0262] Therefore, the guide pin 220 restricts the displacement of the compressor-side bracket 200 (i.e., the electric compressor 3A for vehicles) at a lower position compared to when the elastic member 230 is normal. Thus, when vibration occurs in the electric compressor 3A for vehicles with the lower gap δ disappearing or becoming smaller, the compressor-side bracket 200 frequently contacts the lower end portion 221 of the guide pin 220. Along with this, the compressor-side bracket 200 and the lower end portion 221 of the guide pin 220 frequently generate abnormal noises. In order to avoid the generation of this abnormal noise, it is necessary to increase the lower gap δ in advance. For this reason, in reality, there is a problem that it is impossible to regulate the displacement of the electric compressor 3A for vehicles so that the displacement of the electric compressor 3A for vehicles becomes smaller. In contrast, in the present embodiment, as described above, the elastic deformation portions 11a, 11b, 11c, 11d, 13a, 13b, 13c, 13d are difficult to undergo creep deformation. Therefore, the elastic deformation portions 11a, 11b, 11c, 11d, 13a, 13b, 13c, 13d can attenuate vibration even when a large load is applied in a high-temperature state.

[0263] As described above, by the leaf springs 10a, 10b, 10c, 10d and the displacement regulating portions 110a, 110b, 110c, 110d, it is possible to appropriately implement vibration prevention that suppresses the transmission of the vibration of the electric compressor 3 for vehicles to the vehicle body-side brackets 2a, 2b, 2c, 2d.

[0264] According to the present embodiment configured as described above, the following effects (a), (b), (c), (d), (e), (f), (g), (h) can be obtained.

[0265] (a) The displacement restricting sections 110a and 110c include stopping members 90a, 91a, 90c, and 91c that restrict the displacement of the vehicle electric compressor 3 in the A2 direction.

[0266] The displacement restricting sections 110b and 110d include stopping members 90b, 91b, 90d, and 91d that restrict the displacement of the vehicle electric compressor 3 in the A4 direction. The A4 direction is the direction that intersects the A2 direction.

[0267] The displacement restricting sections 110a, 110b, 110c, and 110d include pipes 30a, 30b, 30c, and 30d that restrict the displacement of the vehicle's electric compressor 3 in the Z direction. The Z direction is the direction that intersects the A4 direction and the A2 direction.

[0268] The displacement restricting sections 110a and 110c include pipes 30a and 30c that restrict the displacement of the vehicle electric compressor 3 in the A1 direction. The A1 direction is the direction that intersects the A4 direction, the A2 direction, and the Z direction.

[0269] The displacement restricting sections 110b and 110d are pipes 30b and 30d that restrict the displacement of the vehicle electric compressor 3 in the A3 direction. The A3 direction is the direction that intersects the A4 direction, the A2 direction, the Z direction, and the A1 direction.

[0270] Therefore, the displacement restricting sections 110a, 110b, 110c, and 110d appropriately restrict displacement in the vehicle electric compressor 3 in five directions: A1, A2, A3, A4, and Z. As a result, vibration isolation can be more effectively implemented to suppress the transmission of vibrations from the vehicle electric compressor 3 to the vehicle body side brackets 2a, 2b, 2c, and 2d.

[0271] (b) The plate 20 is fixed to the vehicle electric compressor 3. The plate 20 has through holes 24a and 24c that penetrate in the A2 direction and through holes 24b and 24d that penetrate in the A4 direction.

[0272] Pipes 30a and 30c are fixed to the vehicle body brackets 2a and 2c and pass through the through holes 24a and 24c, supporting the plate 20 so that the plate displacement restricting portion 23a of the plate 20 can be displaced in the A2 direction. Pipes 30b and 30d are fixed to the vehicle body brackets 2b and 2d and pass through the through holes 24b and 24d, supporting the plate 20 so that the plate displacement restricting portion 23b of the plate 20 can be displaced in the A4 direction.

[0273] The stopping members 90a and 90c are positioned on one side in the A2 direction relative to the plate displacement restricting portion 23a of the plate 20, preventing the plate displacement restricting portion 23a of the plate 20 from being displaced to one side in the A2 direction.

[0274] The stopping members 91a and 91c are positioned on the other side in the A2 direction relative to the plate displacement restricting portion 23a of the plate 20, preventing the plate displacement restricting portion 23a of the plate 20 from being displaced to the other side in the A2 direction.

[0275] Therefore, the position of the plate displacement restricting portion 23a of the plate 20 is maintained between the stopping members 90a and 91a. The position of the plate displacement restricting portion 23a of the plate 20 is maintained between the stopping members 90c and 91c. Therefore, the position of the vehicle electric compressor 3 in the A2 direction falls within a predetermined range in the A2 direction.

[0276] The stopping members 90b and 90d are positioned on one side in the A4 direction relative to the plate displacement restricting portion 23b of the plate 20, preventing the plate displacement restricting portion 23b of the plate 20 from being displaced to one side in the A4 direction.

[0277] The stopping members 91b and 91d are positioned on the other side in the A4 direction relative to the plate displacement restricting portion 23b of the plate 20, preventing the plate displacement restricting portion 23b of the plate 20 from being displaced to the other side in the A4 direction.

[0278] The position of the plate displacement restricting portion 23b of plate 20 is maintained between the stopping members 90b and 91b. The position of the plate displacement restricting portion 23a of plate 20 is maintained between the stopping members 90d and 91d. As a result, the position of the vehicle electric compressor 3 in direction A4 falls within a predetermined range in direction A4.

[0279] Therefore, the plate 20 can be used to restrict the displacement of the vehicle's electric compressor 3 in both the A2 and A4 directions. As a result, by using the plate 20, the stopping members 90a, 91a, 90b, 91b, 90c, 91c, 90d, and 91d can be positioned at any desired location.

[0280] (c) The through holes 24a and 24c are formed in the plate displacement restricting portion 23a of the plate 20 so as to expand in the Z direction and the A1 direction. The plate displacement restricting portion 23a of the plate 20 has through hole forming ends 26a and 26c that form the through holes 24a and 24c. The pipes 30a and 30c restrict the displacement of the through hole forming end 26a in the A1 direction and the Z direction, thereby restricting the position of the vehicle electric compressor 3 in the A1 direction and the Z direction, respectively.

[0281] The through holes 24b and 24d are formed in the plate displacement restricting portion 23b of the plate 20 so as to expand in the Z direction and the A3 direction. The plate displacement restricting portion 23b of the plate 20 has through-hole forming ends 26b and 26d that form the through holes 24b and 24d. The pipes 30b and 30d restrict the displacement of the through-hole forming ends 26b and 26d in the Z direction and the A3 direction, thereby restricting the positions of the vehicle electric compressor 3 in the Z direction and the A3 direction, respectively.

[0282] Therefore, with a simple configuration consisting of pipes 30a, 30b, 30c, 30d and through-hole forming ends 26a, 26b, 26c, 26d, the positions of the vehicle electric compressor 3 in the A1, A3, and Z directions can be restricted.

[0283] (d) The axial elastic members 72a, 72c, 73a, and 73c are supported by the plate displacement restricting portion 23a. When the stopping members 90a and 90c stop the plate displacement restricting portion 23a, the axial elastic members 72a and 72c contact the stopping members 90a and 90c and restrict the force applied from the stopping members 90a and 90c to the plate displacement restricting portion 23a by elastic deformation.

[0284] The axial elastic members 73a and 73c contact the stopping members 91a and 91c when the stopping members 91a and 91c stop the plate displacement restricting portion 23a, and restrict the force applied from the stopping members 91a and 91c to the plate displacement restricting portion 23a by elastic deformation.

[0285] The axial elastic members 72b, 72d, 73b, and 73d are supported by the plate displacement restricting portion 23b. When the stopping members 90b and 90d stop the plate displacement restricting portion 23b, the axial elastic members 72b and 72d contact the stopping members 90b and 90d and restrict the force applied from the stopping members 90b and 90d to the plate displacement restricting portion 23b by elastic deformation.

[0286] The axial elastic members 73b and 73d contact the stopping members 91b and 91d when the stopping members 91b and 91d stop the plate displacement restricting portion 23b, and restrict the force applied from the stopping members 91b and 91d to the plate displacement restricting portion 23b by elastic deformation.

[0287] The inner peripheral elastic member 71a is supported by the plate displacement restricting portion 23a. When the through-hole forming end portion 26a is stopped by the pipe 30a, the inner peripheral elastic member 71a contacts the pipe 30a and restricts the force applied from the pipe 30a to the plate displacement restricting portion 23a by elastic deformation.

[0288] The inner peripheral elastic member 71c is supported by the plate displacement restricting portion 23a. When the through-hole forming end portion 26c is stopped by the pipe 30c, the inner peripheral elastic member 71c contacts the pipe 30c and restricts the force applied from the pipe 30c to the plate displacement restricting portion 23a by elastic deformation.

[0289] The inner circumferential elastic member 71b is supported by the plate displacement restricting portion 23b. The inner circumferential elastic member 71b contacts the pipe 30b when the through-hole forming end 26b is stopped by the pipe 30b, and limits the force applied from the pipe 30b to the plate displacement restricting portion 23b by elastic deformation.

[0290] The inner circumferential elastic member 71d is supported by the plate displacement restricting portion 23b. The inner circumferential elastic member 71d contacts the pipe 30d when the through-hole forming end 26d is stopped by the pipe 30d, and limits the force applied from the pipe 30d to the plate displacement restricting portion 23b by elastic deformation.

[0291] Therefore, the limiting elastic members 70a, 70b, 70c, and 70d limit the force applied from the pipes 30a, 30b, 30c, and 30d, and the stopping members 90a, 90b, 90c, 90d, 91a, 91b, 91c, and 91d to the plate displacement restricting sections 23a and 23b.

[0292] Therefore, the generation of knocking noise caused by the force applied from the pipes 30a, 30b, 30c, 30d and the stopping members 90a, 90b, 90c, 90d, 91a, 91b, 91c, 91d to the plate displacement restricting parts 23a, 23b of the plate 20 can be suppressed.

[0293] (e) When the plate 20 is stopped by at least one of the pipes 30a to 30d, the stopping members 90a to 90d, and 91a to 91d, it has the flexibility to elastically deform and bend due to the force applied by at least one of the members.

[0294] Here, pipes 30a to 30d are a collective designation for pipes 30a, 30b, 30c, and 30d. Stopping members 90a to 90d and 91a to 91d are a collective designation for stopping members 90a, 90b, 90c, 90d, 91a, 91b, 91c, and 91d.

[0295] As a result, the plate 20 can be made even more resistant to the impact noise caused by the force applied by at least one of the pipes 30a to 30d, the stopping members 90a to 90d, and 91a to 91d.

[0296] (f) The elastically deformable parts 11a and 13a constitute the leaf spring 10a. The elastically deformable parts 11c and 13c constitute the leaf spring 10c. The elastically deformable parts 11b and 13b constitute the leaf spring 10b. The elastically deformable parts 11d and 13d constitute the leaf spring 10d.

[0297] Therefore, the leaf springs 10a, 10b, or leaf springs 10c, 10d, constitute an elastic member that generates vibrations in three directions: the Z direction, the A2 direction, and the A4 direction. As a result, vibration isolation can be appropriately implemented using leaf springs with a simple configuration to suppress the transmission of vibrations from the vehicle's electric compressor 3 to the vehicle body brackets 2a, 2b, 2c, and 2d.

[0298] (g) The pipe 30a is formed in a tubular shape with an axis S1 extending in the direction of A2 as its center, and has a hollow section 31a that penetrates in the direction of A2. The leaf spring 10a is provided with a through hole 100a that penetrates in the direction of A2. The bolt 60a fastens the pipe 30a and the leaf spring 10a to the vehicle body bracket 2a by fastening, with the bolt passing through the hollow section 31a and the through hole 100a.

[0299] Therefore, the bolt 60a can fix the pipe 30a together with the leaf spring 10a to the vehicle body bracket 2a. This makes it possible to suppress an increase in the number of fixing parts for fixing the leaf spring 10a to the vehicle body bracket 2a.

[0300] The pipe 30c is formed in a tubular shape with an axis S3 extending in the direction A2 as its center, and has a hollow section 31c that penetrates in the direction A2. The leaf spring 10c is provided with a through hole 100c that penetrates in the direction A2. The bolt 60c fastens the pipe 30c and the leaf spring 10c to the vehicle body bracket 2c by fastening, with the bolt passing through the hollow section 31c and the through hole 100c.

[0301] Therefore, the bolt 60c can fix the pipe 30c together with the leaf spring 10c to the vehicle body bracket 2c. This makes it possible to suppress the increase in the number of fixing parts required to fix the leaf spring 10c to the vehicle body bracket 2c.

[0302] The pipe 30b is formed in a tubular shape with an axis S2 extending in the direction of A4 as its center, and has a hollow section 31b that penetrates in the direction of A4. The leaf spring 10b is provided with a through hole 100b that penetrates in the direction of A4. The bolt 60b fastens the pipe 30b and the leaf spring 10b to the vehicle body bracket 2b by fastening, with the bolt passing through the hollow section 31b and the through hole 100b.

[0303] Therefore, the bolt 60b secures the pipe 30b together with the leaf spring 10b to the vehicle body bracket 2c. This makes it possible to suppress an increase in the number of fixing parts required to secure the leaf spring 10b to the vehicle body bracket 2b.

[0304] The pipe 30d is formed in a tubular shape with an axis S4 extending in the direction of A4 as its center, and has a hollow section 31d that penetrates in the direction of A4. The leaf spring 10d is provided with a through hole 100d that penetrates in the direction of A4. The bolt 60d fastens the pipe 30d and the leaf spring 10d to the vehicle body bracket 2d by fastening, with the bolt passing through the hollow section 31d and the through hole 100d.

[0305] Therefore, the bolt 60d secures the pipe 30d together with the leaf spring 10d to the vehicle body bracket 2d. This reduces the increase in the number of fixing parts required to secure the leaf spring 10d to the vehicle body bracket 2d.

[0306] (h) The stopping member 90a is formed by the end on one side in the Z direction of the elastically deformable portion 13a of the leaf spring 10a. Therefore, the number of parts can be reduced compared to the case where the stopping member 90a and the leaf spring 10a are provided independently.

[0307] The stopping member 90b is formed from one end in the Z direction of the elastically deformable portion 13b of the leaf spring 10b. Therefore, the number of parts can be reduced compared to the case where the stopping member 90b and the leaf spring 10b are provided independently.

[0308] The stopping member 90c is formed from one end in the Z direction of the elastically deformable portion 13c of the leaf spring 10c. Therefore, the number of parts can be reduced compared to the case where the stopping member 90c and the leaf spring 10c are provided independently.

[0309] The stopping member 90d is formed from one end in the Z direction of the elastically deformable portion 13d of the leaf spring 10d. Therefore, the number of parts can be reduced compared to the case where the stopping member 90d and the leaf spring 10d are provided independently.

[0310] (Second Embodiment) In this second embodiment of the vehicle vibration damping device 1, an example in which overlapping leaf springs 14a and 15a that generate sliding friction with respect to the leaf spring 10a due to vibration are provided with respect to the leaf spring 10a is described with reference to Figures 25, 26, etc.

[0311] Figure 25 is a view corresponding to the line V in Figure 3 in the first embodiment described above, and shows the details of the structure of the leaf springs 14a and 15a. Figure 26 is a cross-sectional view taken from XXVI-XXVI in Figure 25, and shows the details of the structure of the leaf springs 14a and 15a.

[0312] As shown in Figures 25 and 26, the laminated leaf spring 14a is a vibration damping member positioned such that its thickness direction is the same as the thickness direction of the elastically deformable portions 11a, 12a, and 13a of the leaf spring 10a. The laminated leaf spring 14a is formed in the shape of a long plate so as to follow the elastically deformable portions 11a, 12a, and 13a of the leaf spring 10a.

[0313] One side of the laminated leaf spring 14a in the longitudinal direction is positioned on the other side in the Z direction relative to the elastically deformable portion 11a of the leaf spring 10a. The one side of the laminated leaf spring 14a in the longitudinal direction, together with the elastically deformable portion 11a of the leaf spring 10a, is fastened to the leg portion 3c of the vehicle electric compressor 3 by bolts 40a.

[0314] The other longitudinal end of the leaf spring 14a is open to the vehicle body bracket 2a. The other longitudinal end of the leaf spring 14a is positioned on the other side in the A2 direction relative to the elastic deformation portion 13a of the leaf spring 10a.

[0315] The other end of the laminated leaf spring 14a in the longitudinal direction forms a wide portion 16a that is wider in the width direction than the elastically deformable portion 13a of the leaf spring 10a. The wide portion 16a of the laminated leaf spring 14a generates sliding friction with respect to the elastically deformable portion 13a of the leaf spring 10a due to vibration.

[0316] The stacked leaf spring 15a is positioned so that its thickness direction is the same as the thickness direction of the elastically deformable portions 11a, 12a, and 13a of the leaf spring 10a. The stacked leaf spring 15a is formed in a long plate shape so as to follow the elastically deformable portions 11a, 12a, and 13a of the leaf spring 10a. The stacked leaf spring 15a is a vibration damping member positioned on the opposite side of the stacked leaf spring 14a from the leaf spring 10a.

[0317] One side of the leaf spring 15a in the longitudinal direction is positioned on one side in the Z direction relative to the elastic deformation portion 11a of the leaf spring 10a. The one side of the leaf spring 15a in the longitudinal direction, together with the elastic deformation portion 11a of the leaf spring 10a and the leaf spring 14a, is fastened to the leg portion 3c of the vehicle electric compressor 3 by bolts 40a.

[0318] The other longitudinal end of the leaf spring 15a is open to the vehicle body bracket 2a. The other longitudinal end of the leaf spring 15a is positioned on the other side in the A2 direction relative to the elastic deformation portion 13a of the leaf spring 10a.

[0319] The other end of the laminated leaf spring 15a in the longitudinal direction forms a wide portion 17a, which is wider in the width direction than the elastically deformable portion 13a of the leaf spring 10a, similar to the wide portion 16a of the laminated leaf spring 14a. The wide portion 17a of the laminated leaf spring 15a is positioned to overlap the wide portion 16a of the laminated leaf spring 14a in the A2 direction. The wide portion 17a of the laminated leaf spring 14a generates sliding friction with respect to the elastically deformable portion 13a of the leaf spring 10a due to vibration.

[0320] As shown in Figures 27 and 28, the vehicle vibration damping device 1 of this embodiment is provided with overlapping leaf springs 14b and 15b that generate sliding friction with respect to the leaf spring 10b due to vibration, in the vehicle vibration damping device 1 of the first embodiment described above.

[0321] Figure 27 is a view corresponding to the arrow IX in Figure 3 in the first embodiment described above, and shows the details of the structure of the leaf springs 14b and 15b. Figure 28 is a cross-sectional view from XXVIII-XXVIII in Figure 27, and shows the details of the structure of the leaf springs 14b and 15b.

[0322] As shown in Figures 27 and 28, the laminated leaf spring 14b is a vibration damping member positioned such that its thickness direction is the same as the thickness direction of the elastically deformable portions 11b, 12b, and 13b of the leaf spring 10b. The laminated leaf spring 14b is formed in the shape of a long plate so as to follow the elastically deformable portions 11b, 12b, and 13b of the leaf spring 10b.

[0323] One side of the laminated leaf spring 14b in the longitudinal direction is positioned on the other side in the Z direction relative to the elastically deformable portion 11b of the leaf spring 10b. The one side of the laminated leaf spring 14b in the longitudinal direction, together with the elastically deformable portion 11b of the leaf spring 10b, is fastened to the leg portion 3c of the vehicle electric compressor 3 by bolts 40b.

[0324] The other longitudinal end of the leaf spring 14b is open to the vehicle body bracket 2b. The other longitudinal end of the leaf spring 14b is positioned on the other side in the A2 direction relative to the elastic deformation portion 13b of the leaf spring 10b.

[0325] The other end of the laminated leaf spring 14b in the longitudinal direction forms a wide portion 16b that is wider in the width direction than the elastically deformable portion 13b of the leaf spring 10b. The wide portion 16b of the laminated leaf spring 14b generates sliding friction with respect to the elastically deformable portion 13b of the leaf spring 10b due to vibration.

[0326] The laminated leaf spring 15b is a vibration damping member positioned such that its thickness direction is the same as the thickness direction of the elastically deformable portions 11b, 12b, and 13b of the leaf spring 10b. The laminated leaf spring 15b is formed in the shape of a long plate so as to follow the elastically deformable portions 11b, 12b, and 13b of the leaf spring 10b. The laminated leaf spring 15b is positioned on the opposite side of the laminated leaf spring 14b from the leaf spring 10b.

[0327] One longitudinal side of the leaf spring 15b is positioned on one side in the Z direction relative to the elastic deformation portion 11b of the leaf spring 10b. The longitudinal side of the leaf spring 15b, together with the elastic deformation portion 11b of the leaf spring 10b and the leaf spring 14b, is fastened to the leg portion 3c of the vehicle electric compressor 3 by bolts 40b.

[0328] The other longitudinal end of the leaf spring 15b is open to the vehicle body bracket 2b. The other longitudinal end of the leaf spring 15b is positioned on the other side in the A2 direction relative to the elastic deformation portion 13b of the leaf spring 10b.

[0329] The other end of the laminated leaf spring 15b in the longitudinal direction forms a wide portion 17b, which is wider in the width direction than the elastically deformable portion 13b of the leaf spring 10b, similar to the wide portion 16b of the laminated leaf spring 14b.

[0330] The wide portion 17b of the leaf spring 15b is positioned to overlap the wide portion 16b of the leaf spring 14b in the A2 direction. The wide portion 17b of the leaf spring 14b generates sliding friction with respect to the elastically deformed portion 13b of the leaf spring 10b due to vibration.

[0331] Similar to the leaf spring 10a described above, two laminated leaf springs are provided to generate sliding friction with respect to the leaf spring 10c due to vibration. One of the two laminated leaf springs is formed in a shape symmetrical to the leaf spring 14a in the Z direction. The other of the two laminated leaf springs is formed in a shape symmetrical to the leaf spring 15a in the Z direction. For this reason, the description of the two laminated leaf springs that generate sliding friction with respect to the leaf spring 10c due to vibration is omitted.

[0332] Similar to the leaf spring 10b described above, two laminated leaf springs are provided to generate sliding friction with respect to the leaf spring 10d due to vibration. One of the two laminated leaf springs is formed in a shape symmetrical to the leaf spring 14a in the Z direction. The other of the two laminated leaf springs is formed in a shape symmetrical to the leaf spring 15a in the Z direction. For this reason, the description of the two laminated leaf springs that generate sliding friction with respect to the leaf spring 10d due to vibration is omitted.

[0333] Next, the operation of the vehicle vibration damping device 1 of this embodiment will be described.

[0334] First, the leaf springs 10a, 10b, 10c, and 10d operate in the same manner as in the first embodiment described above.

[0335] Furthermore, the displacement restricting sections 110a, 110b, 110c, and 110d operate in the same manner as in the first embodiment described above.

[0336] The vibrations from the vehicle's electric compressor 3 are transmitted to the leaf springs 14a and 15a. As a result, the leaf springs 14a and 15a vibrate. Consequently, the wide portion 16a of leaf spring 14a generates sliding friction against the elastically deformed portion 13a of leaf spring 10a. The wide portion 17a of leaf spring 15a generates sliding friction against the elastically deformed portion 13a of leaf spring 10a.

[0337] The sliding friction between the wide portions 16a and 17a of the leaf spring 10a and the elastically deformable portion 13a dampens the vibration of the elastically deformable portion 13a of the leaf spring 10a.

[0338] Similarly, the vibration of the elastically deformed portion 13c of the leaf spring 10c is damped by the sliding friction between the two stacked leaf springs.

[0339] The vibrations from the vehicle's electric compressor 3 are transmitted to the leaf springs 14b and 15b. As a result, the leaf springs 14b and 15b vibrate. Consequently, the wide portion 16b of leaf spring 14b creates sliding friction against the elastically deformed portion 13b of leaf spring 10b. The wide portion 17b of leaf spring 15b also creates sliding friction against the elastically deformed portion 13b of leaf spring 10b.

[0340] The sliding friction between the wide portions 16b and 17b and the elastically deformable portion 13b of the leaf spring 10b dampens the vibration of the elastically deformable portion 13b of the leaf spring 10b.

[0341] Similarly, the vibration of the elastically deformed portion 13d of the leaf spring 10d is damped by the sliding friction between the two stacked leaf springs.

[0342] As a result, the vibrations of the leaf springs 10a, 10b, 10c, and 10d are dampened. Therefore, it is possible to suppress the transmission of vibrations from the vehicle's electric compressor 3 to the vehicle body brackets 2a, 2b, 2c, and 2d.

[0343] According to the embodiment described above, the vehicle vibration damping device 1 includes leaf springs 10a, 10b, 10c, 10d and displacement restricting parts 110a, 110b, 110c, 110d. Therefore, similar to the embodiment, it is possible to suppress the transmission of vibrations from the vehicle electric compressor 3 to the vehicle body side brackets 2a, 2b, 2c, 2d.

[0344] In this embodiment, the wide portions 16a and 17a of the stacked leaf springs 14a and 15a generate sliding friction with respect to the elastically deformable portion 13a of the leaf spring 10a. This dampens the vibration of the elastically deformable portion 13a of the leaf spring 10a.

[0345] Similarly, the vibration of the elastically deformed portion 13c of the leaf spring 10c is damped by the sliding friction between the two stacked leaf springs.

[0346] The wide sections 16b and 17b of the leaf springs 14b and 15b create sliding friction with respect to the elastically deformable section 13b of the leaf spring 10b. This dampens the vibration of the elastically deformable section 13b of the leaf spring 10b.

[0347] Similarly, the vibration of the elastically deformed portion 13d of the leaf spring 10d is damped by the sliding friction between the two stacked leaf springs.

[0348] Therefore, the transmission of vibrations from the vehicle's electric compressor 3 to the vehicle body brackets 2a, 2b, 2c, and 2d can be further suppressed.

[0349] In this embodiment, wide sections 16a and 17a are provided in the stacked leaf springs 14a and 15a to generate sliding friction with respect to the elastically deformed section 13a of the leaf spring 10a.

[0350] Therefore, the contact area between the laminated leaf springs 14a and 15a and the elastically deformable portion 13a of the leaf spring 10a can be increased. Consequently, the laminated leaf springs 14a and 15a can reliably perform sliding friction with the elastically deformable portion 13a of the leaf spring 10a.

[0351] In this embodiment, wide sections 16b and 17b are provided in the stacked leaf springs 14b and 15b to generate sliding friction with respect to the elastically deformed section 13b of the leaf spring 10b.

[0352] Therefore, the contact area between the laminated leaf springs 14b and 15b and the elastically deformable portion 13b of the leaf spring 10b can be increased. Consequently, the laminated leaf springs 14b and 15b can reliably perform sliding friction with the elastically deformable portion 13b of the leaf spring 10b.

[0353] (Third embodiment) In the first embodiment described above, an example was described in which the displacement restricting parts 110a, 110b, 110c, and 110d are fixed to the vehicle body side brackets 2a, 2b, 2c, and 2d.

[0354] However, instead, this third embodiment, in which the displacement restricting parts 110a, 110b, 110c, and 110d are fixed to the support part 3b of the vehicle electric compressor 3, will be described with reference to Figures 29, 30, 31, etc.

[0355] Figure 29 is a left side view of the vehicle electric compressor 3 for illustrating the configuration of the displacement restricting sections 110a and 110b, and corresponds to the view from arrow III of the vibration isolation device in Figure 1 in the first embodiment described above.

[0356] Figure 30 is a right side view of the vehicle electric compressor 3 to illustrate the configuration of the displacement restricting sections 110c and 110d, and corresponds to the view taken by arrow IV of the vibration isolation device in Figure 1 in the first embodiment described above. Figure 31 is a view taken by arrow XXXI in Figure 29, and is a top view of the vehicle electric compressor 3 to illustrate the arrangement of the displacement restricting sections 110a, 110b, 110c, and 110d.

[0357] The vehicle vibration isolation device 1 of this embodiment has a configuration in which the arrangement of the displacement restricting sections 110a, 110b, 110c, and 110d is mainly changed from that of the vehicle vibration isolation device 1 of the first embodiment described above.

[0358] As shown in Figures 29, 30, and 31, the displacement restricting portions 110a, 110b, 110c, and 110d are arranged in a distributed manner in the X and Z directions on the upper side of the plate flat portion 21 of the plate 20 (i.e., the supported member).

[0359] In Figure 32, the pipe 30a of the displacement restricting section 110a is positioned such that its axis S1 extends in the Y direction. The pipe 30a passes through the through hole 24a of the plate 20 and is positioned upright relative to the support section 3b of the vehicle electric compressor 3.

[0360] The through-hole 24a penetrates the plate flat portion 21 of the plate 20, which replaces the plate displacement restricting portion 23a, in the Y direction (i.e., the first displacement direction). The pipe 30a is configured as a displacement support member so that it can be displaced in the Y direction (i.e., the first displacement direction) relative to the plate flat portion 21 of the plate 20.

[0361] The pipe 30a is formed in a cylindrical shape with an axis S1 extending in the Y direction as its center, and has a hollow section 31a that penetrates in the Y direction. The bolt 60a fastens the pipe 30a to the support section 3b of the vehicle electric compressor 3 while passing through the hollow section 31a of the pipe 30a.

[0362] As shown in Figures 32 and 36, the through-hole 24a is formed in a circular shape centered on an axis S1 extending in the Y direction. That is, the through-hole 24a is formed in the plate portion 21 so as to extend in the X and Z directions. The plate portion 21 has a through-hole forming end 26a which forms the through-hole 24a.

[0363] The through-hole forming end 26a of the plate flat portion 21 of plate 20 acts as a second restricting portion, restricting the displacement of pipe 30a in the X direction (i.e., the second displacement direction). In this way, the through-hole forming end 26a restricts the displacement of the vehicle electric compressor 3 so that its position in the X direction falls within a predetermined range in the X direction. The predetermined range in the X direction is set by the through-hole forming end 26a.

[0364] The through-hole forming end 26a of the plate flat portion 21 of plate 20 acts as a third restricting portion, restricting the displacement of pipe 30a in the Z direction (i.e., the third displacement direction). In this way, the through-hole forming end 26a restricts the displacement of the vehicle electric compressor 3 so that its position in the Z direction falls within a predetermined range in the Z direction. The predetermined range in the Z direction is set by the through-hole forming end 26a.

[0365] The plate flat portion 21 of the plate 20 is a first restricting portion that restricts the displacement of the vehicle electric compressor 3 on one side in the Y direction by interfering with the stopping member 90a (i.e., the first stopping member) and restricting the displacement of the stopping member 90a on one side in the Y direction (i.e., the first displacement direction).

[0366] The plate flat portion 21 of the plate 20 is a first restricting portion that restricts the displacement of the vehicle electric compressor 3 on the other side in the Y direction by interfering with the stopping member 91a (i.e., the second stopping member) and restricting the displacement of the stopping member 91a on the other side in the Y direction.

[0367] Here, the stopping member 91a is a flange that protrudes radially outward from one end of the pipe 30a in the Y direction, with axis S1 as the center, in the circumferential direction. The stopping member 91a is provided at the other end of the pipe 30a in the Y direction. The stopping member 91a is supported at the other end of the pipe 30a in the Y direction.

[0368] The stopping member 91a is positioned on one side in the Y direction relative to the plate flat portion 21 of the plate 20.

[0369] In this embodiment, the stopping member 90a is formed by the support portion 3b of the vehicle electric compressor 3. The stopping member 90a is positioned on the other side in the Y direction relative to the plate flat portion 21 of the plate 20.

[0370] The stopping members 90a and 91a restrict the displacement of the vehicle electric compressor 3 so that its position in the Y direction falls within a predetermined range in the Y direction, by restricting the displacement in the Y direction of the respective stopping members 90a and 91a by the plate flat portion 21 of the plate 20. The predetermined range in the Y direction is set by the stopping members 90a and 91a.

[0371] Figure 32 is a cross-sectional view of the pipe 30a and the plate portion 21 of the plate 20, cut by a virtual plane containing the axis S1. In Figure 32, the cross-sectional hatching of the stop members 90a, 91a, pipe 30a, bolt 60a, and limiting elastic member 70a is omitted. As shown in Figure 32, the limiting elastic member 70a is formed as a thin film covering the through-hole forming end 26a of the plate portion 21. As shown in Figure 31, the limiting elastic member 70a is supported by the plate portion 21.

[0372] Specifically, the limiting elastic member 70a comprises an inner circumferential elastic member 71a and axial elastic members 72a and 73a.

[0373] The inner circumferential elastic member 71a is formed as a third limiting member so as to cover the through-hole forming end 26a of the plate flat portion 21 from the radially inward direction centered on the axis S1. The inner circumferential elastic member 71a is formed over the entire circumferential direction centered on the axis S1. The inner circumferential elastic member 71a is supported by the through-hole forming end 26a of the plate flat portion 21.

[0374] The axial elastic member 72a is formed as a first restricting member so as to cover the through-hole forming end 26a of the plate flat portion 21 from the other side in the Y direction. The axial elastic member 72a is formed in an annular shape with the axis S1 as the center.

[0375] The axial elastic member 73a is formed as a second limiting member so as to cover the through-hole forming end 26a from one side in the Y direction. The axial elastic member 73a is formed in an annular shape with the axis S1 as the center. The axial elastic members 72a and 73a are supported by the plate flat portion 21.

[0376] The inner circumferential elastic member 71a and the axial elastic members 72a and 73a constitute an integrated component, similar to the first embodiment described above. The limiting elastic member 70a is made of a rubber material such as EPDM or natural rubber.

[0377] The limiting elastic member 70a limits the force exerted by the at least one member on the plate portion 21 of the plate 20 by elastic deformation when the plate portion 21 of the plate 20 stops the displacement of that member, which is the pipe 30a and the stopping members 90a and 91a.

[0378] In this embodiment, the displacement restricting section 110b is positioned on the other side in the X direction relative to the displacement restricting section 110a. In Figure 33, the pipe 30b of the displacement restricting section 110b is positioned such that its axis S2 extends in the Y direction. The pipe 30b is positioned upright relative to the support section 3b of the vehicle electric compressor 3, with the pipe 30b passing through the through hole 24b of the plate 20.

[0379] The through-hole 24b penetrates the plate flat portion 21 of the plate 20, which replaces the plate displacement restricting portion 23b, in the Y direction (i.e., the first displacement direction). The pipe 30b is configured as a displacement support member so that it can be displaced in the Y direction (i.e., the first displacement direction) relative to the plate flat portion 21 of the plate 20.

[0380] The pipe 30b is formed in a cylindrical shape with an axis S2 extending in the Y direction as its center, and has a hollow section 31b that penetrates in the Y direction. The bolt 60b fastens the pipe 30b to the support section 3b of the vehicle electric compressor 3 by fastening, with the bolt passing through the hollow section 31b of the pipe 30b.

[0381] As shown in Figures 33 and 36, the through-hole 24b is formed in a circular shape centered on the axis S2 extending in the Y direction. That is, the through-hole 24b is formed in the plate portion 21 so as to extend in the X and Z directions. The plate portion 21 has a through-hole forming end 26b that forms the through-hole 24b.

[0382] The through-hole formed end 26b of the plate flat portion 21 of the plate 20 restricts the displacement of the pipe 30b in the X and Z directions, thereby restricting the displacement of the vehicle electric compressor 3 in the X and Z directions, respectively.

[0383] The through-hole forming end 26b of the plate flat portion 21 of plate 20 acts as a second restricting portion, restricting the displacement of pipe 30b in the X direction (i.e., the second displacement direction). In this way, the through-hole forming end 26b restricts the displacement of the vehicle electric compressor 3 so that its position in the X direction falls within a predetermined range in the X direction. The predetermined range in the X direction is set by the through-hole forming end 26b.

[0384] The through-hole forming end 26b of the plate flat portion 21 of plate 20 acts as a third restricting portion, restricting the displacement of pipe 30b in the Z direction (i.e., the third displacement direction). In this way, the through-hole forming end 26b restricts the displacement of the vehicle electric compressor 3 so that its position in the Z direction falls within a predetermined range in the Z direction. The predetermined range in the Z direction is set by the through-hole forming end 26b.

[0385] The plate flat portion 21 of the plate 20 is a first restricting portion that restricts the displacement of the vehicle electric compressor 3 on one side in the Y direction by interfering with the stopping member 90b (i.e., the first stopping member) and restricting the displacement of the stopping member 90b on one side in the Y direction (i.e., the first displacement direction).

[0386] The plate flat portion 21 of the plate 20 is a first restricting portion that restricts the displacement of the vehicle electric compressor 3 on the other side in the Y direction by interfering with the stopping member 91b (i.e., the second stopping member) and restricting the displacement of the stopping member 91b on the other side in the Y direction.

[0387] The stopping member 91b is a flange that protrudes circumferentially from one end of the pipe 30a in the Y direction radially outward with respect to the axis S1. The stopping member 91b is provided at the other end of the pipe 30b in the Y direction. The stopping member 91b is supported at one end of the pipe 30a in the Y direction.

[0388] The stopping member 91b is positioned on one side in the Y direction relative to the plate flat portion 21 of the plate 20.

[0389] In this embodiment, the stopping member 90b is formed by the support portion 3b of the vehicle electric compressor 3. The stopping member 90b is positioned on the other side in the Y direction relative to the plate flat portion 21 of the plate 20.

[0390] The stopping members 90b and 91b restrict the displacement of the vehicle electric compressor 3 so that its position in the Y direction falls within a predetermined range in the Y direction, by restricting the displacement in the Y direction of the respective plate flat portion 21 of the plate 20. The predetermined range in the Y direction is set by the stopping members 90b and 91b.

[0391] Figure 33 is a cross-sectional view of the pipe 30b and its surroundings, cut by a virtual plane containing the axis S2. In Figure 33, the cross-sectional hatching of the stop members 90b, 91b, pipe 30b, bolt 60b, and limiting elastic member 70b is omitted. As shown in Figure 33, the limiting elastic member 70b is formed as a thin film covering the through-hole forming end 26b of the plate flat portion 21.

[0392] The limiting elastic member 70b is supported by the plate portion 21. Specifically, the limiting elastic member 70b comprises an inner circumferential elastic member 71b and axial elastic members 72b and 73b.

[0393] The inner circumferential elastic member 71b is formed as a third limiting member so as to cover the through-hole forming end 26b of the plate flat portion 21 from the radially inward direction centered on the axis S2. The inner circumferential elastic member 71b is formed over the entire circumferential direction centered on the axis S2. The inner circumferential elastic member 71b is supported by the through-hole forming end 26b of the plate flat portion 21.

[0394] The axial elastic member 72b is formed as a first limiting member to cover the through-hole forming end 26b of the plate flat portion 21 from the other side in the Y direction. The axial elastic member 72b is formed as a second limiting member to be an annular shape centered on the axis S2. The axial elastic member 73b is formed to cover the through-hole forming end 26b from one side in the Y direction. The axial elastic member 73b is formed as an annular shape centered on the axis S2.

[0395] The inner circumferential elastic member 71b and the axial elastic members 72b and 73b constitute an integrated component, similar to the first embodiment described above. The axial elastic members 72b and 73b are supported by the plate portion 21. The limiting elastic member 70b is made of a rubber material such as EPDM or natural rubber.

[0396] The limiting elastic member 70b limits the force exerted by the at least one member on the plate displacement restricting section 23b when the plate plate portion 21 of the plate 20 stops the displacement of that member, which is the pipe 30b, the stopping members 90b, and 91b, through elastic deformation.

[0397] In this embodiment, the displacement restricting section 110c is positioned on one side in the Z direction relative to the displacement restricting section 110a. In Figure 34, the pipe 30c of the displacement restricting section 110c is positioned such that its axis S3 extends in the Y direction. The pipe 30c is positioned upright relative to the support section 3b of the vehicle electric compressor 3, with the pipe passing through the through hole 24c of the plate 20.

[0398] The through-hole 24c penetrates the plate flat portion 21 of the plate 20, which replaces the plate displacement restricting portion 23a, in the Y direction (i.e., the first displacement direction). The pipe 30c is configured as a displacement support member so that it can be displaced in the Y direction (i.e., the first displacement direction) relative to the plate flat portion 21 of the plate 20.

[0399] The pipe 30c is formed in a cylindrical shape with an axis S3 extending in the Y direction as its center, and has a hollow section 31c that penetrates in the Y direction. The bolt 60c fastens the pipe 30c to the support section 3b of the vehicle electric compressor 3 by fastening, with the bolt passing through the hollow section 31c of the pipe 30c.

[0400] As shown in Figures 34 and 36, the through-hole 24c is formed in a circular shape centered on an axis S3 extending in the Y direction. That is, the through-hole 24c is formed in the plate portion 21 so as to extend in the X and Z directions. The plate portion 21 has a through-hole forming end 26c that forms the through-hole 24c.

[0401] The through-hole forming end 26c of the plate flat portion 21 of plate 20 acts as a second restricting portion, restricting the displacement of pipe 30c in the X direction (i.e., the second displacement direction). In this way, the through-hole forming end 26c restricts the displacement of the vehicle electric compressor 3 so that its position in the X direction falls within a predetermined range in the X direction. The predetermined range in the X direction is set by the through-hole forming end 26c.

[0402] The through-hole forming end 26c of the plate flat portion 21 of plate 20 acts as a third restricting portion, restricting the displacement of pipe 30c in the Z direction (i.e., the third displacement direction). As a result, the through-hole forming end 26c restricts the displacement of the vehicle electric compressor 3 so that its position in the Z direction falls within a predetermined range in the Z direction. The predetermined range in the Z direction is set by the through-hole forming end 26c.

[0403] The plate flat portion 21 of the plate 20 is a first restricting portion that restricts the displacement of the vehicle electric compressor 3 on the other side in the Y direction by interfering with the stopping member 90c (i.e., the first stopping member) and restricting the displacement of the stopping member 90c on one side in the Y direction (i.e., the first displacement direction).

[0404] The plate flat portion 21 of the plate 20 interferes with the stopping member 91c (i.e., the second stopping member) and restricts the displacement of the stopping member 91c on the other side in the Y direction, thereby restricting the displacement of the vehicle electric compressor 3 on the other side in the Y direction.

[0405] Here, the stopping member 91c is a flange that protrudes circumferentially from one end of the pipe 30c in the Y direction radially outward with respect to the axis S1. The stopping member 91c is provided at the other end of the pipe 30c in the Y direction.

[0406] The stopping member 91c is positioned on one side in the Y direction relative to the plate flat portion 21 of the plate 20.

[0407] In this embodiment, the stopping member 90c is formed by the support portion 3b of the vehicle electric compressor 3. The stopping member 90c is positioned on the other side in the Y direction relative to the plate flat portion 21 of the plate 20.

[0408] The stopping members 90c and 91c restrict the displacement of the vehicle electric compressor 3 so that its position in the Y direction remains within a predetermined range in the Y direction, by restricting the displacement in the Y direction of the respective stopping members 90c and 91c by the plate flat portion 21 of the plate 20. The predetermined range in the Y direction is set by the stopping members 90c and 91c.

[0409] Figure 34 is a cross-sectional view of the pipe 30c and its surrounding area, cut by a virtual plane containing the axis S3. In Figure 34, the cross-sectional hatching of the stop members 90c, 91c, pipe 30c, bolt 60c, and limiting elastic member 70c is omitted. As shown in Figure 34, the limiting elastic member 70c is formed as a thin film covering the through-hole forming end 26c of the plate portion 21. The limiting elastic member 70c is supported by the plate portion 21. Specifically, the limiting elastic member 70c comprises an inner circumferential elastic member 71c and axial elastic members 72c and 73c.

[0410] The inner circumferential elastic member 71c is formed as a third limiting member so as to cover the through-hole forming end 26c of the plate flat portion 21 from the radially inward direction centered on the axis S3. The inner circumferential elastic member 71c is supported by the through-hole forming end 26c of the plate flat portion 21. The inner circumferential elastic member 71c is formed over the entire circumferential direction centered on the axis S3.

[0411] The axial elastic member 72c is formed as a first restricting member so as to cover the through-hole forming end 26c of the plate flat portion 21 from the other side in the Y direction. The axial elastic member 72c is formed in an annular shape with the axis S3 as the center. The axial elastic member 73c is formed as a second restricting member so as to cover the through-hole forming end 26c from one side in the Y direction. The axial elastic member 73c is formed in an annular shape with the axis S3 as the center.

[0412] The inner circumferential elastic member 71c and the axial elastic members 72c and 73c constitute an integrated component, similar to the first embodiment described above. The axial elastic members 72c and 73c are supported by the plate portion 21. The limiting elastic member 70c is made of a rubber material such as EPDM or natural rubber.

[0413] The limiting elastic member 70c limits the force exerted by the at least one member on the plate portion 21 of the plate 20 by elastic deformation when the plate portion 21 of the plate 20 stops the displacement of that member, which is the pipe 30c, the stopping members 90c, and 91c.

[0414] In this embodiment, the displacement restricting section 110d is positioned on one side in the Z direction relative to the displacement restricting section 110a. In Figure 35, the pipe 30d of the displacement restricting section 110d is positioned such that its axis S4 extends in the Y direction. The pipe 30d is positioned upright relative to the support section 3b of the vehicle electric compressor 3, with the pipe 30d passing through the through hole 24d of the plate 20.

[0415] The through-hole 24d penetrates the plate flat portion 21 of the plate 20, which replaces the plate displacement restricting portion 23b, in the Y direction (i.e., the first displacement direction). The pipe 30d is configured as a displacement support member so that it can be displaced in the Y direction (i.e., the first displacement direction) relative to the plate flat portion 21 of the plate 20.

[0416] The pipe 30d is formed in a cylindrical shape with an axis S4 extending in the Y direction as its center, and has a hollow section 31d that penetrates in the Y direction. The bolt 60d fastens the pipe 30d to the support section 3b of the vehicle electric compressor 3 while passing through the hollow section 31d of the pipe 30d.

[0417] As shown in Figures 35 and 36, the through-hole 24d is formed in a circular shape centered on an axis S4 extending in the Y direction. That is, the through-hole 24d is formed in the plate portion 21 so as to extend in the X and Z directions. The plate portion 21 has a through-hole forming end 26d that forms the through-hole 24d.

[0418] The through-hole forming end 26d of the plate flat portion 21 of the plate 20 acts as a second restricting portion, restricting the displacement of the pipe 30d in the X direction (i.e., the second displacement direction). In this way, the through-hole forming end 26d restricts the displacement of the vehicle electric compressor 3 so that its position in the X direction falls within a predetermined range in the X direction. The predetermined range in the X direction is set by the through-hole forming end 26d.

[0419] The through-hole forming end 26d of the plate flat portion 21 of plate 20 acts as a third restricting portion, restricting the displacement of pipe 30d in the Z direction (i.e., the third displacement direction). As a result, the through-hole forming end 26d restricts the displacement of the vehicle electric compressor 3 so that its position in the Z direction falls within a predetermined range in the Z direction. The predetermined range in the Z direction is set by the through-hole forming end 26d.

[0420] The plate flat portion 21 of the plate 20 interferes with the stopping member 90d (i.e., the first stopping member), restricting the stopping member 90d from being displaced to one side in the Y direction (i.e., the first displacement direction), thereby restricting the vehicle electric compressor 3 from being displaced in the Y direction.

[0421] The plate flat portion 21 of the plate 20 is a first restricting portion that restricts the displacement of the vehicle electric compressor 3 on the other side in the Y direction by interfering with the stopping member 91d (i.e., the second stopping member) and restricting the displacement of the stopping member 91d on the other side in the Y direction.

[0422] Here, the stopping member 91d is a flange that protrudes circumferentially from one end of the pipe 30d in the Y direction radially outward with respect to the axis S1. The stopping member 91d is provided at the other end of the pipe 30d in the Y direction.

[0423] The stopping member 91d is positioned on one side in the Y direction relative to the plate flat portion 21 of the plate 20.

[0424] In this embodiment, the stopping member 90d is formed by the support portion 3b of the vehicle electric compressor 3. The stopping member 90d is positioned on the other side in the Y direction relative to the plate flat portion 21 of the plate 20.

[0425] The stopping members 90d and 91d restrict the displacement of the vehicle electric compressor 3 so that its position in the Y direction falls within a predetermined range in the Y direction, by restricting the displacement in the Y direction of the respective stopping members 90d and 91d by the plate flat portion 21 of the plate 20. The predetermined range in the Y direction is set by the stopping members 90d and 91d.

[0426] Figure 35 is a cross-sectional view of pipe 30d and its surrounding area, cut by a virtual plane containing axis S4. In Figure 35, the cross-sectional hatching of the stop members 90d, 91d, pipe 30d, bolt 60d, and limiting elastic member 70d is omitted. As shown in Figure 35, the limiting elastic member 70d is formed as a thin film covering the through-hole forming end 26d of the plate portion 21. The limiting elastic member 70d is supported by the plate portion 21.

[0427] Specifically, the limiting elastic member 70d comprises an inner circumferential elastic member 71d and axial elastic members 72d and 73d. The inner circumferential elastic member 71d, as a third limiting member, is formed to cover the through-hole forming end 26d of the plate flat portion 21 from the radially inward direction centered on the axis S4.

[0428] The inner circumferential elastic member 71d is formed over the entire circumferential direction centered on the axis S4. The inner circumferential elastic member 71d is supported at the through-hole forming end 26d of the plate flat portion 21.

[0429] The axial elastic member 72d is formed as a first limiting member so as to cover the through-hole forming end 26d of the plate flat portion 21 from the other side in the Y direction. The axial elastic member 72d is formed in an annular shape with the axis S4 as the center. The axial elastic member 73d is formed as a second limiting member so as to cover the through-hole forming end 26d from one side in the Y direction. The axial elastic member 73d is formed in an annular shape with the axis S4 as the center.

[0430] The inner circumferential elastic member 71d and the axial elastic members 72d and 73d constitute an integrated component, similar to the first embodiment described above. The axial elastic members 72d and 73d are supported by the plate portion 21. The limiting elastic member 70d is made of a rubber material such as EPDM or natural rubber.

[0431] The limiting elastic member 70d limits the force exerted by the at least one member on the plate flat portion 21 of the plate 20 by elastic deformation when the plate flat portion 21 of the plate 20 stops the displacement of the at least one member among the pipe 30d and the stopping members 90d and 91d.

[0432] The plate displacement restricting portion 23a of the plate 20 in Figure 29 is fixed to the vehicle body side bracket 2a together with the elastically deformed portion 13a of the leaf spring 10a by fastening with a bolt 51a.

[0433] The plate displacement restricting portion 23b of the plate 20 is fixed to the vehicle body side bracket 2b together with the elastically deformable portion 13b of the leaf spring 10b by fastening with bolts 51b.

[0434] The plate displacement restricting portion 23a of the plate 20 in Figure 30 is fixed to the vehicle body side bracket 2c together with the elastically deformable portion 13c of the leaf spring 10c by fastening with bolts 51c.

[0435] The plate displacement restricting portion 23b of the plate 20 is fixed to the vehicle body side bracket 2d together with the elastically deformable portion 13d of the leaf spring 10d by fastening with a bolt 51d.

[0436] In the vehicle vibration damping device 1 of this embodiment, the arrangement structure of the displacement restricting parts 110a, 110b, 110c, and 110d, and the fixing structure of the plate displacement restricting parts 23a and 23b of the plate 20, are the same as those of the vehicle vibration damping device 1 of the first embodiment described above. Therefore, in this embodiment, a description of the arrangement structure of the displacement restricting sections 110a, 110b, 110c, and 110d in the vehicle vibration damping device 1, and the fixing structure of the plate displacement restricting sections 23a and 23b of the plate 20, will be omitted.

[0437] Next, the operation of this embodiment will be described.

[0438] First, when the vehicle electric compressor 3 starts operating, it generates vibrations. The vibrations generated from the vehicle electric compressor 3 are transmitted to the leaf springs 10a, 10b, 10c, and 10d. The leaf springs 10a, 10b, 10c, and 10d operate in the same manner as in the first embodiment described above. Therefore, the leaf springs 10a, 10b, 10c, and 10d dampen vibrations in the A2 direction, A4 direction, and Z direction transmitted from the vehicle electric compressor 3. This suppresses the transmission of vibrations in the A2 direction, A4 direction, and Z direction from the vehicle electric compressor 3 to the vehicle body brackets 2a, 2b, 2c, and 2d.

[0439] The vehicle's electric compressor 3 is displaced in at least one of the X, Y, and Z directions due to its vibration. In response to this, the displacement restricting parts 110a, 110b, 110c, and 110d restrict the displacement of the vehicle's electric compressor 3 in the X, Y, and Z directions.

[0440] For example, if the stopping member 91a (i.e., the support portion 3b of the vehicle electric compressor 3) is displaced to the other side in the Y direction (i.e., the first displacement direction), the stopping member 91a will come into contact with the axial elastic member 73a of the limiting elastic member 70a. Consequently, the stopping member 91a is interfered with by the plate flat portion 21 of the plate 20, and its displacement to the other side in the Y direction is restricted.

[0441] When the stopping member 90a is displaced to one side in the Y direction, the stopping member 90a comes into contact with the axial elastic member 72a of the limiting elastic member 70a. Consequently, the stopping member 90a is interfered with by the plate flat portion 21 of the plate 20, and its displacement to one side in the Y direction is restricted.

[0442] In this way, the Y-direction displacement of the stopping members 91a and 90a is restricted by the plate flat portion 21 of the plate 20. As a result, the displacement of the vehicle electric compressor 3 is restricted by the stopping members 91a and 90a so that its position in the Y-direction falls within a predetermined range in the Y-direction.

[0443] Here, when the stopping member 91a is interfered with by the plate plate portion 21 of the plate 20 and its displacement to the other side in the Y direction is restricted, the axial elastic member 73a of the limiting elastic member 70a undergoes elastic deformation due to the force applied from the stopping member 91a. As a result, the force applied from the stopping member 91a to the plate plate portion 21 of the plate 20 is restricted.

[0444] When the stopping member 90a is interfered with by the plate plate portion 21 of the plate 20 and its displacement to one side in the Y direction is restricted, the axial elastic member 72a of the limiting elastic member 70a undergoes elastic deformation due to the force applied from the stopping member 90a. As a result, the force applied from the stopping member 90a to the plate plate portion 21 of the plate 20 is restricted.

[0445] When pipe 30a is displaced to the other side in the X direction, pipe 30a comes into contact with the inner circumferential elastic member 71a of the limiting elastic member 70a. Consequently, pipe 30a is interfered with by the through-hole forming end 26a of the plate flat portion 21 of plate 20, and its displacement to the other side in the X direction is restricted.

[0446] When pipe 30a is displaced to one side in the X direction, pipe 30a comes into contact with the inner circumferential elastic member 71a of the limiting elastic member 70a. Consequently, pipe 30a is interfered with by the through-hole forming end 26a of the plate flat portion 21 of plate 20, and its displacement to one side in the X direction is restricted.

[0447] In this way, the displacement of the pipe 30a in the X direction is restricted by the through-hole forming end 26a of the plate flat portion 21 of the plate 20. As a result, the displacement of the vehicle electric compressor 3 is restricted by the through-hole forming end 26a so that the position of the vehicle electric compressor 3 in the X direction falls within a predetermined range in the X direction.

[0448] Here, when the displacement of the pipe 30a to the other side in the X direction is restricted by the through-hole forming end 26a of the plate flat portion 21 of the plate 20, the inner circumferential elastic member 71a of the limiting elastic member 70a undergoes elastic deformation due to the force applied from the pipe 30a. As a result, the force applied from the pipe 30a to the through-hole forming end 26a of the plate flat portion 21 of the plate 20 is restricted.

[0449] Furthermore, when the displacement of the pipe 30a to one side in the X direction is restricted by the through-hole forming end 26a of the plate flat portion 21 of the plate 20, the inner circumferential elastic member 71a of the limiting elastic member 70a undergoes elastic deformation due to the force applied from the pipe 30a. As a result, the force applied from the pipe 30a to the through-hole forming end 26a of the plate flat portion 21 of the plate 20 is restricted.

[0450] When pipe 30a is displaced to the other side in the Z direction, pipe 30a comes into contact with the inner circumferential elastic member 71a of the limiting elastic member 70a. Consequently, pipe 30a is interfered with by the through-hole forming end 26a of the plate flat portion 21 of plate 20, and its displacement to the other side in the Z direction is restricted.

[0451] When pipe 30a is displaced to one side in the Z direction, pipe 30a comes into contact with the inner circumferential elastic member 71a of the limiting elastic member 70a. Consequently, pipe 30a is interfered with by the through-hole forming end 26a of the plate flat portion 21 of plate 20, and its displacement to one side in the Z direction is restricted.

[0452] In this way, the displacement of the pipe 30a in the Z direction is restricted by the through-hole forming end 26a of the plate flat portion 21 of the plate 20. As a result, the displacement of the vehicle electric compressor 3 is restricted by the through-hole forming end 26a so that the position of the vehicle electric compressor 3 in the Z direction falls within a predetermined range in the Z direction.

[0453] Here, when the displacement of the pipe 30a to the other side in the Z direction is restricted by the through-hole forming end 26a of the plate flat portion 21 of the plate 20, the inner circumferential elastic member 71a of the limiting elastic member 70a undergoes elastic deformation due to the force applied from the pipe 30a. As a result, the force applied from the pipe 30a to the through-hole forming end 26a of the plate flat portion 21 of the plate 20 is restricted.

[0454] Furthermore, when the displacement of the pipe 30a to one side in the Z direction is restricted by the through-hole forming end 26a of the plate flat portion 21 of the plate 20, the inner circumferential elastic member 71a of the limiting elastic member 70a undergoes elastic deformation due to the force applied from the pipe 30a. As a result, the force applied from the pipe 30a to the through-hole forming end 26a of the plate flat portion 21 of the plate 20 is restricted.

[0455] In this manner, the displacement restricting section 110a restricts the displacement of the vehicle's electric compressor 3 in the X, Y, and Z directions using the pipe 30a and the stopping members 90a and 91a.

[0456] Similarly, the displacement restricting section 110b restricts the displacement of the vehicle's electric compressor 3 in the X, Y, and Z directions using the pipe 30b and the stopping members 90b and 91b.

[0457] Similarly, the displacement restricting section 110c restricts the displacement of the vehicle's electric compressor 3 in the X, Y, and Z directions using the pipe 30c and the stopping members 90c and 91c.

[0458] Similarly, the displacement restricting section 110d restricts the displacement of the vehicle electric compressor 3 in the X, Y, and Z directions using the pipe 30d and the stopping members 90d and 91d.

[0459] Furthermore, the plate portion 21 of the plate 20 prevents the displacement of at least one of the pipes 30a to 30d, the stopping members 90a to 90d, and 91a to 91d. At this time, the plate portion 21 of the plate 20 elastically deforms and bends due to the force applied by one of the pipes 30a to 30d, the stopping members 90a to 90d, and 91a to 91d.

[0460] Therefore, it is possible to limit the force applied from the pipes 30a to 30d, the stopping members 90a to 90d, and 91a to 91d to the support portion 3b of the vehicle electric compressor 3 via the plate flat portion 21 of the plate 20.

[0461] In addition, the plate portion 21 of the plate 20 can be further suppressed from generating a knocking sound due to the force applied by one of the pipes 30a to 30d, or the stopping members 90a to 90d and 91a to 91d.

[0462] According to the embodiment described above, the leaf springs 10a, 10b, 10c, and 10d dampen vibrations in three directions, namely the Z direction, the A2 direction, and the A4 direction, transmitted from the vehicle electric compressor 3, similar to the first embodiment described above.

[0463] Each of the elastically deformable parts 11a, 11b, 11c, 11d, 13a, 13b, 13c, and 13d is made of a metallic material. Therefore, 11a, 11b, 11c, 11d, 13a, 13b, 13c, and 13d can appropriately dampen the three-directional vibrations transmitted from the vehicle's electric compressor 3, even when a large load is applied from the vehicle's electric compressor 3 at high temperatures.

[0464] The displacement restricting section 110a restricts the displacement of the vehicle electric compressor 3 in the X, Y, and Z directions using the pipe 30a and the stopping members 90a and 91a. The displacement restricting section 110a restricts the displacement of the vehicle electric compressor 3 so that the position of the vehicle electric compressor 3 in the X, Y, and Z directions falls within a predetermined range for each direction. The predetermined range for each direction is set by the stopping members 90a and 91a and the through-hole forming end 26a of the plate flat portion 21 of the plate 20.

[0465] Similarly, the displacement restricting sections 110b, 110c, and 110d restrict the displacement of the vehicle's electric compressor 3 in the X, Y, and Z directions, respectively.

[0466] As a result, the leaf springs 10a, 10b, 10c, and 10d appropriately limit the maximum amplitude of the vehicle's electric compressor 3. Therefore, the leaf springs 10a, 10b, 10c, and 10d, along with the displacement restricting parts 110a, 110b, 110c, and 110d, can appropriately implement vibration isolation to prevent vibrations from the vehicle's electric compressor 3 from being transmitted to the vehicle body brackets 2a, 2b, 2c, and 2d.

[0467] In this embodiment, the following effects (i) and (j) can be obtained.

[0468] (i) In the displacement restricting section 110a, when the stopping member 91a is restricted from being displaced to the other side in the Y direction by the plate flat portion 21 of the plate 20, the axial elastic member 73a of the limiting elastic member 70a undergoes elastic deformation due to the force applied from the stopping member 91a. As a result, the force applied from the stopping member 91a to the plate flat portion 21 of the plate 20 is restricted.

[0469] When the stopping member 90a is restricted from being displaced to one side in the Y direction by the plate plate portion 21 of the plate 20, the axial elastic member 72a of the limiting elastic member 70a undergoes elastic deformation due to the force applied from the stopping member 90a. As a result, the force applied from the stopping member 90a to the plate plate portion 21 of the plate 20 is restricted.

[0470] When the displacement of pipe 30a is restricted to one side or the other in the X direction by the through-hole forming end 26a of the plate flat portion 21 of plate 20, the inner circumferential elastic member 71a of the limiting elastic member 70a undergoes elastic deformation due to the force applied from pipe 30a. As a result, the force applied from pipe 30a to the plate flat portion 21 of plate 20 is restricted.

[0471] When the displacement of pipe 30a is restricted by the through-hole forming end 26a of the plate 20's plate flat portion 21 to one side or the other in the Z direction, the inner circumferential elastic member 71a of the limiting elastic member 70a undergoes elastic deformation due to the force applied from pipe 30a. As a result, the force applied from pipe 30a to the plate flat portion 21 of plate 20 is restricted.

[0472] In this way, the force applied from the pipe 30a and the stopping members 90a and 91a to the plate portion 21 of the plate 20 is restricted. Therefore, the generation of a knocking sound due to the force applied from the pipe 30a and the stopping members 90a and 91a to the plate portion 21 of the plate 20 is suppressed.

[0473] Similarly, in the displacement restricting sections 110b, 110c, and 110d, the force applied to the plate flat section 21 of the plate 20 is limited. Therefore, the generation of impact noise due to the force applied to the plate flat section 21 of the plate 20 is suppressed.

[0474] (j) The pipes 30a to 30d, the stopping members 90a to 90d, and 91a to 91d are each stopped by the plate flat portion 21 of the plate 20. At this time, the plate 20 has flexibility so that it elastically deforms and bends in response to the force applied by one of the pipes 30a to 30d, the stopping members 90a to 90d, and 91a to 91d.

[0475] Therefore, the plate 20 can be made even less likely to generate a knocking sound due to the force applied by one of the pipes 30a to 30d, or the stopping members 90a to 90d and 91a to 91d.

[0476] (Fourth Embodiment) In this fourth embodiment, a vehicle vibration damping device 1 is described with reference to Figure 37, in which a plate 27 that frictionally contacts the vehicle body side brackets 2a, 2b, etc., is added to the vehicle vibration damping device 1 of the first embodiment described above.

[0477] Figure 37 is a left side view of the vehicle vibration damping device 1 of this embodiment, and corresponds to Figure 3 of the vehicle vibration damping device 1 of the first embodiment described above. In Figure 37, the same reference numerals as in Figure 3 indicate the same components, and their descriptions are omitted.

[0478] The vehicle vibration damping device 1 of this embodiment has a plate 27 added as a vibration damping member compared to the vehicle vibration damping device 1 of the first embodiment described above. Therefore, the description of the components of the vehicle vibration damping device 1 of this embodiment other than the plate 27 will be omitted.

[0479] The plate 27 in this embodiment is a plate material made of a metal material. The metal material used to make up the plate 27 is a material containing iron, such as stainless steel. Therefore, the plate 27 has stable characteristics such as spring constant from the extremely low temperature range to the high temperature range. The plate 27 is positioned between the vehicle body side brackets 2a, 2c and the vehicle body side brackets 2b, 2d. In Figure 37, the vehicle body side brackets 2c and 2d are not shown.

[0480] Plate 27 is positioned on one side in the Y direction relative to plate 20. Specifically, plate 27 comprises a flat portion 28a and inclined portions 28b and 28c.

[0481] The flat plate portion 28a is positioned on one side in the Y direction relative to the plate flat portion 21a of the plate 20. The flat plate portion 28a, together with the plate flat portion 21a of the plate 20, is fixed to the support portion 3b of the vehicle electric compressor 3 by fastening with bolts 50a, 50b, 50c, and 50d. In Figure 37, the bolts 50c and 50d are not shown.

[0482] The flat plate portion 28a is formed in a plate shape with thickness in the Y direction and extending in the X and Z directions. The inclined plate portion 28b is positioned on the other side of the flat plate portion 28a in the X direction. The inclined plate portion 28b is formed in a plate shape with thickness in the A4 direction and extending in the A3 and Z directions.

[0483] The inclined plate portion 28b is formed in a sloping shape that slopes toward one side in the Y direction as it moves toward the other side in the X direction from the flat plate portion 28a. The inclined plate portion 28b is in contact with the vehicle body side brackets 2b and 2d.

[0484] The inclined plate portion 28c is positioned on one side in the X direction relative to the flat plate portion 28a. The inclined plate portion 28c is formed in a plate shape that has thickness in the A2 direction and extends in the A2 and Z directions. The inclined plate portion 28c is formed so that as it moves toward one side in the X direction from the flat plate portion 28a, it moves toward one side in the Y direction. The inclined plate portion 28c is in contact with the vehicle body side brackets 2a and 2c.

[0485] In this embodiment, the inclined plate portions 28b and 28c of the plate 27 elastically deform due to vibration and come into frictional contact with the vehicle body side brackets 2a, 2b, 2c, and 2d.

[0486] Next, the operation of the vehicle vibration damping device 1 of this embodiment will be described.

[0487] First, when the vehicle electric compressor 3 starts operating, it generates vibrations. The vibrations generated from the vehicle electric compressor 3 are transmitted to the leaf springs 10a, 10b, 10c, and 10d. The leaf springs 10a, 10b, 10c, and 10d operate in the same manner as in the first embodiment described above.

[0488] As a result, the leaf springs 10a, 10b, 10c, and 10d dampen vibrations in the A2 direction, A4 direction, and Z direction transmitted from the vehicle electric compressor 3. This suppresses the transmission of vibrations in the A2 direction, A4 direction, and Z direction from the vehicle electric compressor 3 to the vehicle body brackets 2a, 2b, 2c, and 2d.

[0489] The vehicle's electric compressor 3 is displaced in at least one of the X, Y, and Z directions due to its vibration. In response to this, the displacement restricting parts 110a, 110b, 110c, and 110d restrict the displacement of the vehicle's electric compressor 3 in the A1, A2, A3, A4, and Z directions, respectively.

[0490] At this time, vibrations from the vehicle's electric compressor 3 are transmitted to plate 27 via plate 20. Plate 27 vibrates due to elastic deformation caused by these vibrations. As a result, the inclined plate portion 28b makes frictional contact with the vehicle body side brackets 2b and 2d due to the vibrations. The inclined plate portion 28c makes frictional contact with the vehicle body side brackets 2a and 2c due to the vibrations.

[0491] As a result, the frictional contact between the inclined plate portions 28b and 28c and the vehicle-side brackets 2a, 2b, 2c, and 2d can dampen the vibration of the plate 20, and consequently the vibration of the vehicle's electric compressor 3.

[0492] According to the embodiment described above, the leaf springs 10a, 10b, 10c, and 10d dampen vibrations in three directions, namely the Z direction, the A2 direction, and the A4 direction, transmitted from the vehicle electric compressor 3, similar to the first embodiment described above.

[0493] The displacement restricting sections 110a, 110b, 110c, and 110d restrict the displacement of the vehicle electric compressor 3 in the A1, A2, A3, A4, and Z directions, respectively.

[0494] As described above, the leaf springs 10a, 10b, 10c, 10d and the displacement restricting parts 110a, 110b, 110c, 110d can appropriately suppress the transmission of vibrations from the vehicle electric compressor 3 to the vehicle body side brackets 2a, 2b, 2c, 2d, similar to the first embodiment described above.

[0495] In this embodiment, the plate 27, specifically the inclined plate portions 28b and 28c, makes frictional contact with the vehicle body brackets 2a, 2b, 2c, and 2d due to vibrations transmitted from the vehicle's electric compressor 3. This allows the vibrations of the vehicle's electric compressor 3 to be dampened.

[0496] (Fifth embodiment) In the first embodiment described above, an example was described in which the vehicle electric compressor 3 is positioned on the other side in the Y direction (i.e., the lower side in the vertical direction) relative to the vehicle body side brackets 2a, 2b, 2c, and 2d.

[0497] However, instead, this fifth embodiment, in which the vehicle electric compressor 3 is positioned on one side in the X direction (i.e., horizontal direction) relative to the vehicle body brackets 2a, 2b, 2c, and 2d, will be described with reference to Figure 38.

[0498] Figure 38 is a left side view of the vehicle vibration damping device 1 of this embodiment, and corresponds to Figure 3 of the vehicle vibration damping device 1 of the first embodiment described above. In Figure 38, the same reference numerals as in Figure 3 indicate the same components, and their descriptions are omitted.

[0499] The vehicle electric compressor 3 is positioned on one side in the X direction relative to the vehicle body brackets 2a, 2b, 2c, and 2d. The vehicle body brackets 2a and 2c are positioned on one side in the X direction relative to the vehicle body brackets 2b and 2d. Therefore, the vehicle vibration isolation device 1 is positioned on one side in the X direction relative to the vehicle body brackets 2a, 2b, 2c, and 2d.

[0500] The vehicle vibration damping device 1 of this embodiment and the vehicle vibration damping device 1 of the first embodiment described above differ only in the arrangement of the vehicle electric compressor 3 and the vehicle vibration damping device 1 with respect to the vehicle body side brackets 2a, 2b, 2c, and 2d; the configuration is substantially the same. For this reason, a description of the configuration of the vehicle vibration damping device 1 of this embodiment will be omitted.

[0501] In this embodiment, the leaf springs 10a, 10b, 10c, and 10d have substantially the same resonant frequencies fx, fy, fz, fθ, fΦ, and fΨ for vibrations occurring in the vehicle vibration damping device 1 and the vehicle electric compressor 3, similar to the first embodiment described above. Therefore, the amount of displacement of the leaf springs 10a, 10b, 10c, and 10d due to the weight of the vehicle electric compressor 3 is the same as in the first embodiment described above.

[0502] Therefore, even when the vehicle electric compressor 3 and the vehicle vibration damping device 1 are arranged horizontally with respect to the vehicle body brackets 2a, 2b, 2c, and 2d, vibration damping of the vehicle electric compressor 3 can be addressed using the same vehicle vibration damping device 1 as in the first embodiment.

[0503] (Sixth Embodiment) In the fifth embodiment described above, an example was described in which the vehicle electric compressor 3 is positioned on one side in the X direction relative to the vehicle body side brackets 2a, 2b, 2c, and 2d.

[0504] However, instead, this sixth embodiment, in which the vehicle electric compressor 3 is positioned on one side in the Y direction (i.e., the side that raises the ceiling) relative to the vehicle body brackets 2a, 2b, 2c, and 2d, will be described with reference to Figure 39.

[0505] Figure 39 is a left side view of the vehicle vibration damping device 1 of this embodiment, and corresponds to Figure 3 of the vehicle vibration damping device 1 of the first embodiment described above. In Figure 39, the same reference numerals as in Figure 3 indicate the same components, and their descriptions are omitted.

[0506] The vehicle electric compressor 3 is positioned on one side in the Y direction relative to the vehicle body brackets 2a, 2b, 2c, and 2d. The vehicle body brackets 2a and 2c are positioned on one side in the Y direction relative to the vehicle body brackets 2b and 2d. Therefore, the vehicle vibration isolation device 1 is positioned on one side in the Y direction relative to the vehicle body brackets 2a, 2b, 2c, and 2d.

[0507] The vehicle vibration damping device 1 of this embodiment and the vehicle vibration damping device 1 of the first embodiment described above differ only in the arrangement of the vehicle electric compressor 3 and the vehicle vibration damping device 1 with respect to the vehicle body side brackets 2a, 2b, 2c, and 2d; the configuration is substantially the same. For this reason, a description of the configuration of the vehicle vibration damping device 1 of this embodiment will be omitted.

[0508] In this embodiment, the leaf springs 10a, 10b, 10c, and 10d have substantially the same resonant frequencies fx, fy, fz, fθ, fΦ, and fΨ for vibrations occurring in the vehicle vibration damping device 1 and the vehicle electric compressor 3, similar to the first embodiment described above. Therefore, the amount of displacement of the leaf springs 10a, 10b, 10c, and 10d due to the weight of the vehicle electric compressor 3 is the same as in the first embodiment described above.

[0509] Therefore, even when the vehicle electric compressor 3 and the vehicle vibration damping device 1 are positioned above the vehicle body brackets 2a, 2b, 2c, and 2d, vibration damping of the vehicle electric compressor 3 can be addressed using the same vehicle vibration damping device 1 as in the first embodiment.

[0510] As a result, a limited number of variations in vehicle vibration isolation devices 1 can meet the diverse needs of different vehicles, promoting design standardization and enabling them to be provided at a low cost.

[0511] The vehicle-side needs include the temperature conditions of the area where the vehicle vibration damping device 1 is installed, the road conditions on which the vehicle travels, the area of ​​the vehicle where the vehicle vibration damping device 1 is installed, and the positional relationship of the vehicle electric compressor 3 with respect to the vehicle body brackets 2a, 2b, 2c, and 2d.

[0512] (Other embodiments) (1) In the first to sixth embodiments described above, an example was given in which the vehicle vibration damping device 1 was constructed using four leaf springs 10a, 10b, 10c, and 10d. However, the vehicle vibration damping device 1 may be constructed using a number of leaf springs other than four, as long as the leaf springs have thickness in multiple directions and dampen vibrations transmitted from the vehicle electric compressor 3 in multiple directions.

[0513] For example, a single leaf spring may be constructed using an elastic deformation section that vibrates in the Z direction, an elastic deformation section that vibrates in the A2 direction, and an elastic deformation section that vibrates in the A4 direction.

[0514] (2) In the first, second, fourth, fifth, and sixth embodiments described above, an example was described in which the second displacement direction of the plate displacement restricting portion 23a of the plate 20 whose displacement is restricted by the pipes 30a and 30c was set to the A1 direction, which is the longitudinal direction of the elastic deformation portions 11a and 11c.

[0515] However, the second displacement direction of the plate displacement restricting portion 23a of the plate 20 may be set to a direction other than the A1 direction.

[0516] (3) In the first, second, fourth to sixth embodiments described above, an example was described in which the second displacement direction of the plate displacement restricting portion 23b of the plate 20 whose displacement is restricted by the pipes 30b and 30d is the A3 direction, which is the longitudinal direction of the elastic deformation portions 11b and 11d.

[0517] However, the second displacement direction of the plate displacement restricting portion 23b of the plate 20 may be set to a direction other than the A3 direction.

[0518] (4) In the first, second, fourth, fifth, and sixth embodiments described above, an example was described in which the stopping member 90a, which is the first stopping part that restricts the displacement of the plate displacement restricting part 23a of the plate 20 on one side in the A2 direction, is made up of the elastic deformation part 13a of the leaf spring 10a.

[0519] However, instead, the stopping member 90a, which is the first stopping part that restricts the displacement of the plate displacement restricting part 23a of the plate 20 on one side in the A2 direction, may be made of a member other than the elastically deformable part 13a of the leaf spring 10a (for example, the vehicle body side bracket 2a).

[0520] Similarly, in the first, second, fourth, fifth, and sixth embodiments described above, the stopping member 90b is not limited to being composed of the elastically deformable portion 13b of the leaf spring 10b, but may also be composed of a member other than the elastically deformable portion 13b of the leaf spring 10b (for example, the vehicle body side bracket 2b).

[0521] Similarly, in the first, second, fourth, fifth, and sixth embodiments described above, the stopping member 90c is not limited to being composed of the elastically deformable portion 13c of the leaf spring 10c, but may also be composed of a member other than the elastically deformable portion 13c of the leaf spring 10c (for example, the vehicle body side bracket 2c).

[0522] Similarly, the stopping member 90d is not limited to being composed of the elastically deformable portion 13d of the leaf spring 10d, but may also be composed of a member other than the elastically deformable portion 13d of the leaf spring 10d (for example, the vehicle body side bracket 2d).

[0523] (5) In the first, second, fourth, fifth, and sixth embodiments described above, examples were given in which bolts 60a, 60b, 60c, and 60d were used as fixing members to fix pipes 30a, 30b, 30c, and 30d to vehicle body brackets 2a, 2b, 2c, and 2d.

[0524] However, this is not limited to the above; other fixing members (for example, welding) other than bolts 60a, 60b, 60c, and 60d may be used to fix the pipes 30a, 30b, 30c, and 30d to the vehicle body brackets 2a, 2b, 2c, and 2d.

[0525] (6) In the third embodiment described above, an example was described in which bolts 60a, 60b, 60c, and 60d were used as fixing members to fix the pipes 30a, 30b, 30c, and 30d to the vehicle electric compressor 3.

[0526] However, the method is not limited to this; other fixing members (for example, welding) other than bolts 60a, 60b, 60c, and 60d may be used to fix the pipes 30a, 30b, 30c, and 30d to the vehicle electric compressor 3.

[0527] (7) In the fourth embodiment described above, an example was described in which the plate 27 as a vibration damping member is fixed to the vehicle electric compressor 3 via the plate 20. However, the invention is not limited to this, and the plate 27 may be fixed to the vehicle electric compressor 3 in a state in contact with the vehicle electric compressor 3.

[0528] (8) In the first embodiment described above, an example was described in which the direction of displacement of the vehicle electric compressor 3 restricted by the displacement restricting parts 110a, 110d, 110c, and 110d was mismatched with the direction of vibration of the vehicle electric compressor 3 damped by the leaf springs 10a, 10b, 10c, and 10d.

[0529] However, instead, the displacement restricting sections 110a, 110d, 110c, 110d and the leaf springs 10a, 10b, 10c, 10d may be configured so that the displacement direction of the vehicle electric compressor 3 coincides with the vibration direction of the vehicle electric compressor 3. The same applies to the vehicle vibration isolation device 1 of the second, fourth, fifth, and sixth embodiments described above.

[0530] (9) In the sixth embodiment described above, an example was described in which the direction of displacement of the vehicle electric compressor 3 restricted by the displacement restricting parts 110a, 110d, 110c, and 110d was matched with the direction of vibration of the vehicle electric compressor 3 damped by the leaf springs 10a, 10b, 10c, and 10d.

[0531] However, instead, the displacement restricting sections 110a, 110d, 110c, 110d and the leaf springs 10a, 10b, 10c, 10d may be configured such that the displacement direction of the vehicle electric compressor 3 and the vibration direction of the vehicle electric compressor 3 are different.

[0532] (10) In the first to sixth embodiments described above, an example was given in which the vibration source was the vehicle's electric compressor 3. However, instead, the vibration source may be other on-board equipment (for example, a pump) other than the vehicle's electric compressor 3.

[0533] (11) In the first to sixth embodiments described above, an example of applying the vehicle vibration damping device 1 to an automobile was explained. However, the vehicle vibration damping device 1 is not limited to automobiles and may also be applied to trains, railways, and other vehicles.

[0534] (12) In the first embodiment described above, an example was described in which the plate 20 was fixed to the vehicle electric compressor 3 by bolts 50a, 50b, 50c, and 50d. However, the invention is not limited to this, and a plate 20 integrated with the vehicle electric compressor 3 may also be used.

[0535] (13) In the first to sixth embodiments described above, an example was given in which the support was the body of an automobile. However, the support is not limited to this, and an in-vehicle device of an automobile (for example, an in-vehicle engine) may also be used.

[0536] For example, the vehicle's electric compressor 3 is connected to the vehicle's engine via a connection. That is, the vehicle vibration isolation device 1 supports the vehicle's electric compressor 3 while being supported by the vehicle's engine. In this case, the vehicle vibration isolation device 1 can suppress the transmission of vibrations from the vehicle's electric compressor 3 to the vehicle's engine.

[0537] (14) The present invention is not limited to the embodiments described above, and can be modified as appropriate within the scope of the claims. Furthermore, the embodiments described above are not unrelated to each other, and can be combined as appropriate, except in cases where the combination is clearly impossible. In addition, it goes without saying that the elements constituting the embodiments are not necessarily essential, except in cases where they are explicitly stated to be particularly essential or where they are clearly considered essential in principle. Furthermore, in the embodiments described above, when numerical values ​​such as the number, numerical values, quantities, or ranges of the components of the embodiments are mentioned, the invention is not limited to those specific numbers, except in cases where they are explicitly stated to be particularly essential or where they are clearly limited to a specific number in principle. Furthermore, in the embodiments described above, when the shape, positional relationship, etc., of the components are mentioned, the invention is not limited to those shapes, positional relationships, etc., except in cases where they are explicitly stated to be particularly essential or where they are clearly limited to a specific shape, positional relationship, etc., in principle. (Features of the present invention) [Claim 1] A vibration damping device for a vehicle that supports a vibration source (3) while being supported by support bodies (2a, 2b, 2c, 2d), and performs vibration damping to suppress the transmission of vibrations generated in the vibration source to the support bodies, A first elastically deformable portion (11a, 11b, 11c, 11d) is formed in the shape of a plate made of a metal material and having a thickness in the first thickness direction (Z), and is elastically deformed by the vibration and vibrates in the first thickness direction, When the direction intersecting the first thickness direction is defined as the second thickness direction (A2), a second elastically deformable portion (13a, 13c) is formed in a plate shape made of a metal material and having thickness in the second thickness direction, and is elastically deformed by the vibration and vibrates in the second thickness direction, When the direction intersecting the first thickness direction and the second thickness direction is defined as the third thickness direction (A4), a third elastically deformable portion (13b, 13d) is formed in the shape of a plate made of a metal material and having thickness in the third thickness direction, and is elastically deformed by the vibration and vibrates in the third thickness direction, Displacement restricting units (110a, 110b, 110c, 110d) that restrict the displacement of the vibration source so that the position of the vibration source falls within a predetermined range, A vehicle vibration isolation device equipped with the following features. [Claim 2] The displacement restricting section is A first restricting section (90a, 91a, 90b, 91b, 90c, 91c, 90d, 91d, 20) restricts the displacement of the vibration source in the first displacement direction (A2, A4, Y), When the direction intersecting the first displacement direction is defined as the second displacement direction (A1, A3, X), the second restricting section (30a, 30b, 30c, 30d, 26a, 26b, 26c, 26d) restricts the displacement of the vibration source in the second displacement direction, When the direction intersecting the first displacement direction and the second displacement direction is defined as the third displacement direction (Z), a third restricting section (30a, 30b, 30c, 30d, 26a, 26b, 26c, 26d) restricts the displacement of the vibration source in the third displacement direction, A vehicle vibration damping device according to claim 1, comprising: [Claim 3] A supported member (20) is supported by the vibration source and has through holes (24a, 24b, 24c, 24d) that penetrate in the first displacement direction, The system includes displacement support members (30a, 30b, 30c, 30d) fixed to the support and passing through the through-hole, which support the supported member so that the supported member can be displaced in the first displacement direction, The first regulatory section is, First stopping members (90a, 90b, 90c, 90d) that interfere with the supported member and prevent the supported member from being displaced to one side in the first displacement direction, thereby preventing the vibration source from being displaced to one side in the first displacement direction, The system includes second stopping members (91a, 91b, 91c, 91d) that interfere with the supported member and prevent the supported member from being displaced to the other side in the first displacement direction, thereby preventing the vibration source from being displaced to the other side in the first displacement direction, The vehicle vibration damping device according to claim 2, wherein the first stopping member and the second stopping member set the predetermined range in the first displacement direction. [Claim 4] The vehicle vibration damping device according to claim 3, wherein the second stopping member is supported by the displacement support member. [Claim 5] The through-hole is formed in the supported member so as to expand in the second displacement direction (A1, A3) and the third displacement direction (Z). The supported member has through-hole forming ends (26a, 26b, 26c, 26d) that form the through-hole, The displacement support member interferes with the through-hole forming end and restricts the through-hole forming end from being displaced in the second displacement direction, thereby constituting the second restricting portion that restricts the displacement of the vibration source in the second displacement direction. Furthermore, the displacement support member interferes with the through-hole forming end and restricts the displacement of the through-hole forming end in the third displacement direction, thereby constituting the third restricting portion that restricts the displacement of the vibration source in the third displacement direction. The vehicle vibration damping device according to claim 3 or 4, wherein the through-hole forming end is set to the predetermined range in the second displacement direction and the predetermined range in the third displacement direction, respectively. [Claim 6] A first limiting member (72a, 72b, 72c, 72d) is supported by the supported member and, when the first stopping member stops the displacement of the supported member, contacts the first stopping member and, by elastic deformation, limits the force applied from the first stopping member to the supported member. A second limiting member (73a, 73b, 73c, 73d) is supported by the supported member and, when the second stopping member stops the displacement of the supported member, contacts the second stopping member and, by elastic deformation, limits the force applied from the second stopping member to the supported member. A third limiting member (71a, 71b, 71c, 71d) is supported by the supported member and, when the displacement of the through-hole forming end in the second or third displacement direction is stopped by the displacement support member, contacts the displacement support member and, through elastic deformation, limits the force applied from the displacement support member to the supported member. The vehicle vibration damping device according to claim 5, comprising: [Claim 7] The vibration damping device for a vehicle according to claim 5 or 6, wherein the supported member undergoes elastic deformation and deflection due to a force applied by at least one of the members, the displacement support member, the first stopping member, and the second stopping member, when the displacement of the supported member is restricted by at least one of the members. [Claim 8] The support is equipped with fixing members (60a, 60b, 60c, 60d) for fixing the displacement support member to the support, The first elastic deformation part and the second elastic deformation part constitute a leaf spring (10a, 10c, 10c, 10d), The displacement support member is formed in a tubular shape with an axis (S1, S2, S3, S4) extending in the first displacement direction as its center, and has hollow portions (31a, 31b, 31c, 31d) that penetrate in the first displacement direction. The leaf spring is provided with through holes (100a, 100b, 100c, 100d) that penetrate in the first displacement direction. The vehicle vibration damping device according to any one of claims 3 to 6, wherein the fixing member is fixed to the support body by passing through the hollow portion and the through hole of the leaf spring. [Claim 9] A supported member (20) is supported by the support and has through holes (24a, 24b, 24c, 24d) that penetrate in the first displacement direction (Y), The system includes displacement support members (30a, 30b, 30c, 30d) that are fixed to the vibration source and penetrate the through-hole of the supported member, and are configured to be displaceable relative to the supported member in the first displacement direction, The first regulatory section is, First stopping members (90a, 90b, 90c, 90d) that stop the displacement of the vibration source on one side in the first displacement direction by being interfered with by the supported member and stopping the displacement of the displacement support member on one side in the first displacement direction, The system includes a second stopping member (91a, 91b, 91c, 91d) that, by being interfered with by the supported member, stops the displacement of the displacement support member on the other side in the first displacement direction, thereby stopping the displacement of the vibration source on the other side in the first displacement direction, The vehicle vibration damping device according to claim 2, wherein the first stopping member and the second stopping member set the predetermined range in the first displacement direction. [Claim 10] The through hole in the supported member is formed to expand in the second displacement direction (X) and the third displacement direction (Z) within the supported member. The supported member has through-hole forming ends (26a, 26b, 26c, 26d) that form the through-hole, The through-hole forming end constitutes the second restricting portion that restricts the displacement of the vibration source in the second displacement direction by restricting the displacement of the displacement support member in the second displacement direction. Furthermore, the through-hole forming end constitutes the third restricting portion that restricts the displacement of the vibration source in the third displacement direction by restricting the displacement of the displacement support member in the third displacement direction. The vehicle vibration damping device according to claim 9, wherein the through-hole forming end is set to have a predetermined range in the second displacement direction and a predetermined range in the third displacement direction, respectively. [Claim 11] Supported by the supported member, and when the supported member interferes with the first stopping member to stop the displacement of the displacement support member on one side in the first displacement direction, the first limiting members (72a, 72b, 72c, 72d) contact the first stopping member and limit the force applied from the first stopping member to the supported member by elastic deformation, Supported by the supported member, and when the supported member interferes with the second stopping member to stop the displacement of the displacement support member on the other side in the first displacement direction, the second limiting member (73a, 73b, 73c, 73d) contacts the second stopping member and limits the force applied from the second stopping member to the supported member by elastic deformation, A third limiting member (71a, 71b, 71c, 71d) is supported by the supported member and, when the displacement of the displacement support member in the second or third displacement direction is restricted by the through-hole forming end, contacts the displacement support member and limits the force applied from the displacement support member to the supported member by elastic deformation, The vehicle vibration damping device according to claim 10, comprising: [Claim 12] The vehicle vibration damping device according to claim 11, wherein the supported member elastically deforms and deflects due to a force applied from at least one of the members, the displacement support member, the first stopping member, and the second stopping member, when the displacement of at least one of the members is restricted. [Claim 13] The system includes fixing members (60a, 60b, 60c, 60d) for fixing the displacement support member to the vibration source, The displacement support member is formed in a tubular shape with an axis (S1, S2, S3, S4) extending in the first displacement direction as its center, and has hollow portions (31a, 31b, 31c, 31d) that penetrate in the first displacement direction. The vehicle vibration damping device according to any one of claims 9 to 12, wherein the fixing member is fixed to the vibration source with the displacement support member penetrating the hollow portion. [Claim 14] It is equipped with vibration damping members (14a, 14b, 15a, 15b) that generate sliding friction, The first elastic deformation part, the second elastic deformation part, and the third elastic deformation part constitute a leaf spring (10a, 10b, 10c, 10d), The vibration damping member generates sliding friction with respect to the leaf spring due to the vibration of the vibration source, thereby damping the vibration of the leaf spring, as described in any one of claims 1 to 13. [Claim 15] The vibration damping device for a vehicle according to any one of claims 1 to 13, further comprising a vibration damping member (27) fixed to the vibration source, which generates sliding friction with respect to the support due to the vibration of the vibration source to dampen the vibration of the vibration source. [Explanation of symbols]

[0538] 1. Vibration isolation device 2a Vehicle-side bracket 2b Vehicle-side bracket 3. Electric compressor 11a Elastic deformation part 11b Elastic deformation part 13a Elastic deformation part 13c Elastic deformation part 10a Leaf spring 10b Leaf spring 110a Displacement control section 110b Displacement control section

Claims

1. A vibration damping device for a vehicle that supports a vibration source (3) while being supported by support bodies (2a, 2b, 2c, 2d), and performs vibration damping to suppress the transmission of vibrations generated in the vibration source to the support bodies, A first elastically deformable portion (11a, 11b, 11c, 11d) is formed in the shape of a plate made of a metal material and having a thickness in the first thickness direction (Z), and is elastically deformed by the vibration and vibrates in the first thickness direction, When the direction intersecting the first thickness direction is defined as the second thickness direction (A2), a second elastically deformable portion (13a, 13c) is formed in the shape of a plate made of a metal material and having thickness in the second thickness direction, and is elastically deformed by the vibration and vibrates in the second thickness direction, When the direction intersecting the first thickness direction and the second thickness direction is defined as the third thickness direction (A4), a third elastically deformable portion (13b, 13d) is formed in a plate shape made of a metal material and having thickness in the third thickness direction, and is elastically deformed by the vibration and vibrates in the third thickness direction, Displacement restricting units (110a, 110b, 110c, 110d) that restrict the displacement of the vibration source so that the position of the vibration source falls within a predetermined range, A vehicle vibration isolation device equipped with the following features.

2. The displacement restricting section is A first restricting section (90a, 91a, 90b, 91b, 90c, 91c, 90d, 91d, 20) restricts the displacement of the vibration source in the first displacement direction (A2, A4, Y), When the direction intersecting the first displacement direction is defined as the second displacement direction (A1, A3, X), the second restricting section (30a, 30b, 30c, 30d, 26a, 26b, 26c, 26d) restricts the displacement of the vibration source in the second displacement direction, When the direction intersecting the first displacement direction and the second displacement direction is defined as the third displacement direction (Z), a third restricting section (30a, 30b, 30c, 30d, 26a, 26b, 26c, 26d) restricts the displacement of the vibration source in the third displacement direction, A vehicle vibration damping device according to claim 1, comprising:

3. A supported member (20) is supported by the vibration source and has through holes (24a, 24b, 24c, 24d) that penetrate in the first displacement direction, The system includes displacement support members (30a, 30b, 30c, 30d) fixed to the support and passing through the through-hole, which support the supported member so that the supported member can be displaced in the first displacement direction, The aforementioned first regulatory section is, First stopping members (90a, 90b, 90c, 90d) that interfere with the supported member and prevent the supported member from being displaced to one side in the first displacement direction, thereby preventing the vibration source from being displaced to one side in the first displacement direction, The system includes second stopping members (91a, 91b, 91c, 91d) that interfere with the supported member and prevent the supported member from being displaced to the other side in the first displacement direction, thereby preventing the vibration source from being displaced to the other side in the first displacement direction, The first stopping member and the second stopping member set the predetermined range in the first displacement direction, as described in claim 2.

4. The vehicle vibration damping device according to claim 3, wherein the second stopping member is supported by the displacement support member.

5. The through-hole is formed in the supported member so as to expand in the second displacement direction (A1, A3) and the third displacement direction (Z). The supported member has through-hole forming ends (26a, 26b, 26c, 26d) that form the through-hole, The displacement support member interferes with the through-hole forming end and restricts the displacement of the through-hole forming end in the second displacement direction, thereby constituting the second restricting portion that restricts the displacement of the vibration source in the second displacement direction. Furthermore, the displacement support member interferes with the through-hole forming end and restricts the displacement of the through-hole forming end in the third displacement direction, thereby constituting the third restricting portion that restricts the displacement of the vibration source in the third displacement direction. The vehicle vibration damping device according to claim 3, wherein the through-hole forming end is set to have a predetermined range in the second displacement direction and a predetermined range in the third displacement direction, respectively.

6. A first limiting member (72a, 72b, 72c, 72d) is supported by the supported member and, when the first stopping member stops the displacement of the supported member, contacts the first stopping member and, by elastic deformation, limits the force applied from the first stopping member to the supported member. A second limiting member (73a, 73b, 73c, 73d) is supported by the supported member and, when the second stopping member stops the displacement of the supported member, contacts the second stopping member and, by elastic deformation, limits the force applied from the second stopping member to the supported member. A third limiting member (71a, 71b, 71c, 71d) is supported by the supported member and, when the displacement of the through-hole forming end in the second or third displacement direction is stopped by the displacement support member, contacts the displacement support member and, through elastic deformation, limits the force applied from the displacement support member to the supported member. The vehicle vibration damping device according to claim 5, comprising:

7. The vehicle vibration damping device according to claim 5, wherein the supported member undergoes elastic deformation and deflection due to a force applied by at least one of the members, the displacement support member, the first stopping member, and the second stopping member, when the displacement of the supported member is restricted by at least one of the members.

8. The support is provided with fixing members (60a, 60b, 60c, 60d) for fixing the displacement support member, The first elastic deformation part and the second elastic deformation part constitute a leaf spring (10a, 10c, 10c, 10d), The displacement support member is formed in a tubular shape with an axis (S1, S2, S3, S4) extending in the first displacement direction as its center, and has hollow portions (31a, 31b, 31c, 31d) that penetrate in the first displacement direction. The leaf spring is provided with through holes (100a, 100b, 100c, 100d) that penetrate in the first displacement direction. The vehicle vibration damping device according to claim 3, wherein the fixing member is fixed to the support body by passing through the hollow portion and the through hole of the leaf spring.

9. A supported member (20) is supported by the support and has through holes (24a, 24b, 24c, 24d) that penetrate in the first displacement direction (Y), The system includes displacement support members (30a, 30b, 30c, 30d) that are fixed to the vibration source and penetrate the through-hole of the supported member, and are configured to be displaceable relative to the supported member in the first displacement direction, The aforementioned first regulatory section is, A first stopping member (90a, 90b, 90c, 90d) that stops the displacement of the vibration source on one side in the first displacement direction by being interfered with by the supported member and stopping the displacement of the displacement support member on one side in the first displacement direction, The system includes a second stopping member (91a, 91b, 91c, 91d) that, by being interfered with by the supported member, stops the displacement of the displacement support member on the other side in the first displacement direction, thereby stopping the displacement of the vibration source on the other side in the first displacement direction, The first stopping member and the second stopping member set the predetermined range in the first displacement direction, as described in claim 2.

10. The through hole in the supported member is formed to expand in the second displacement direction (X) and the third displacement direction (Z) within the supported member. The supported member has through-hole forming ends (26a, 26b, 26c, 26d) that form the through-hole, The through-hole forming end constitutes the second restricting portion that restricts the displacement of the vibration source in the second displacement direction by restricting the displacement of the displacement support member in the second displacement direction. Furthermore, the through-hole forming end constitutes the third restricting portion that restricts the displacement of the vibration source in the third displacement direction by restricting the displacement of the displacement support member in the third displacement direction. The vehicle vibration damping device according to claim 9, wherein the through-hole forming end is set to have a predetermined range in the second displacement direction and a predetermined range in the third displacement direction, respectively.

11. Supported by the supported member, and when the supported member interferes with the first stopping member to stop the displacement of the displacement support member on one side in the first displacement direction, the first limiting members (72a, 72b, 72c, 72d) contact the first stopping member and limit the force applied from the first stopping member to the supported member by elastic deformation, Supported by the supported member, and when the supported member interferes with the second stopping member to stop the displacement of the displacement support member on the other side in the first displacement direction, the second limiting member (73a, 73b, 73c, 73d) contacts the second stopping member and limits the force applied from the second stopping member to the supported member by elastic deformation, A third limiting member (71a, 71b, 71c, 71d) is supported by the supported member and, when the displacement of the displacement support member in the second or third displacement direction is restricted by the through-hole forming end, contacts the displacement support member and limits the force applied from the displacement support member to the supported member by elastic deformation, The vehicle vibration damping device according to claim 10, comprising:

12. The vehicle vibration damping device according to claim 11, wherein the supported member elastically deforms and deflects due to a force applied from at least one of the members, the displacement support member, the first stopping member, and the second stopping member, when the displacement of at least one of the members is restricted.

13. The system includes fixing members (60a, 60b, 60c, 60d) for fixing the displacement support member to the vibration source, The displacement support member is formed in a tubular shape with an axis (S1, S2, S3, S4) extending in the first displacement direction as its center, and has hollow portions (31a, 31b, 31c, 31d) that penetrate in the first displacement direction. The vehicle vibration damping device according to claim 9, wherein the fixing member is fixed to the vibration source with the displacement support member penetrating the hollow portion.

14. It is equipped with vibration damping members (14a, 14b, 15a, 15b) that generate sliding friction, The first elastic deformation part, the second elastic deformation part, and the third elastic deformation part constitute a leaf spring (10a, 10b, 10c, 10d), The vibration damping member generates sliding friction with respect to the leaf spring due to the vibration of the vibration source, thereby damping the vibration of the leaf spring, as described in claim 1.

15. The vehicle vibration damping device according to claim 1, further comprising a vibration damping member (27) fixed to the vibration source, which generates sliding friction with respect to the support due to the vibration of the vibration source to dampen the vibration of the vibration source.

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