Vibration isolation bracket

Abstract

The support (1) comprises: a support body (2) formed of a synthetic resin; and a reinforcing member (3) formed of a fiber reinforced plastic. The body (2) has a surrounding portion (20). The reinforcing member (3) extends in a surrounding direction. The reinforcing member arrangement portion (20a) of the surrounding portion (20) is formed by an outer peripheral portion (211), an inner peripheral portion (212), and a connecting portion (213). The cross-sectional shape of the portion (20a) is an I-shape in which the cross-sectional width (W3) of the connecting portion (213) is narrower than the cross-sectional width (W1) of the outer peripheral portion (211) and the cross-sectional width (W2) of the inner peripheral portion (212). The reinforcing member (3) is arranged on the outer peripheral portion (211).

Description

Technical Field

[0001] The invention relates to a bracket for an anti-vibration device. Background Art

[0002] As a conventional anti-vibration device bracket, there is a bracket for an anti-vibration device that aims to achieve both weight reduction and improved durability, and a reinforcing member formed of fiber-reinforced plastic is fixed to the outer periphery of a surrounding portion of a bracket body formed of synthetic resin (for example, refer to Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2019-78380 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] However, in the above-mentioned conventional anti-vibration device bracket, there is room for improvement in terms of achieving further weight reduction while ensuring durability.

[0008] An object of the present invention is to provide a bracket for a vibration isolating device which can achieve further weight reduction while ensuring durability.

[0009] Solutions for solving problems

[0010] The support for an anti-vibration device of the present invention comprises: a support body formed of a synthetic resin; and a reinforcing member formed of a fiber reinforced plastic, wherein the support body has a surrounding portion surrounding the anti-vibration device body, and the reinforcing member extends in a surrounding direction of the surrounding portion and is arranged in the surrounding portion. In the support for an anti-vibration device,

[0011] The reinforcing member arrangement portion of the surrounding portion is formed by an outer peripheral portion extending in the surrounding direction, an inner peripheral portion extending in the surrounding direction, and a connecting portion connecting the outer peripheral portion and the inner peripheral portion, and extending in the surrounding direction. When the reinforcing member arrangement portion is observed from a cross section orthogonal to the surrounding direction, the cross-sectional shape of the reinforcing member arrangement portion is an I-shaped cross-sectional width of the connecting portion is narrower than the cross-sectional width of the outer peripheral portion and the cross-sectional width of the inner peripheral portion, and the reinforcing member is arranged at the outer peripheral portion of the reinforcing member arrangement portion. According to the support for the vibration isolation device of the present invention, further weight reduction can be achieved while ensuring durability.

[0012] In the anti-vibration device bracket of the present invention, it is preferable that the cross-sectional width of the inner peripheral portion is narrower than the cross-sectional width of the outer peripheral portion. In this case, further weight reduction can be achieved.

[0013] In the vibration-proof device bracket of the present invention, the cross-sectional width of the outer peripheral portion can be the same as or narrower than the cross-sectional width of the inner peripheral portion. In this case, the strength balance between the outer peripheral portion and the inner peripheral portion can be well balanced, and further weight reduction can be achieved while improving durability.

[0014] In the anti-vibration device bracket of the present invention, it is preferable that the inner peripheral side surface of the inner peripheral portion has a profile convex toward the inner peripheral side when viewed from a cross section perpendicular to the surrounding direction. In this case, durability can be further improved.

[0015] In the anti-vibration device bracket of the present invention, the axial center portion of the inner peripheral surface of the convex contour may be formed by a curved line convex toward the outside. In this case, the durability can be further improved.

[0016] In the anti-vibration device bracket of the present invention, the axial end side portion of the inner peripheral surface of the convex contour may be formed by a straight line. In this case, further weight reduction can be achieved.

[0017] In the vibration-proof device bracket of the present invention, it is preferred that a plurality of bottom ribs are formed at the bottom of the bracket body, the plurality of bottom ribs extend in the axial direction, and are arranged at intervals in the axial direction, and the thickness of the plurality of bottom ribs is thicker as the bottom ribs are closer to the axial center of the bottom. In this case, the weight can be further reduced.

[0018] The anti-vibration device bracket of the present invention may be configured such that the inner peripheral surface of the outer peripheral portion has a gate mark of injection molding. In this case, the reinforcing member can be firmly fixed to the bracket body without impairing the appearance.

[0019] In the anti-vibration device bracket of the present invention, it is preferred that the side surface of the connecting portion includes: a curved surface connected to the inner peripheral side surface of the outer peripheral portion and formed by a curve concave inwardly when viewed from the cross section; and a curved surface connected to the outer peripheral side surface of the inner peripheral portion and formed by a curve concave inwardly when viewed from the cross section. In this case, stress concentration generated in the bracket body can be reduced and durability can be improved.

[0020] In the vibration-proof device bracket of the present invention, it is preferred that the inner peripheral side surface of the outer peripheral portion, the outer peripheral side surface of the inner peripheral portion, and the side surface of the connecting portion form a recess extending in the surrounding direction at the reinforcing member arrangement portion of the surrounding portion. In this case, stress concentration generated in the bracket body can be reduced and durability can be improved.

[0021] Effects of the Invention

[0022] According to the present invention, it is possible to provide a vibration isolating device bracket that can achieve further weight reduction while ensuring durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the bracket for anti-vibration devices according to the first embodiment of the present invention.

[0024] Figure 2 yes Figure 1 AA section view.

[0025] Figure 3 yes Figure 2 Magnified image of .

[0026] Figure 4 yes Figure 1 Left side view.

[0027] Figure 5 yes Figure 1 Top view of the .

[0028] Figure 6 yes Figure 1 Bottom view of .

[0029] Figure 7 From the left side of the front Figure 1 Stereoscopic diagram.

[0030] Figure 8 It is shown from the front right side Figure 1 Stereoscopic diagram.

[0031] Fig. 9 It is shown from the bottom left Figure 1 Stereoscopic diagram.

[0032] Fig.10 It is shown from the bottom right. Figure 1 Stereoscopic diagram.

[0033] Fig.11 It is shown from the right front plane side Figure 1 Stereoscopic view of the AA section.

[0034] Fig.12 It is a front view of the bracket for anti-vibration devices according to the second embodiment of the present invention.

[0035] Fig.13 yes Fig.12 AA section view.

[0036] Fig.14 yes Fig.13 Magnified image of .

[0037] Fig.15 yes Fig.12 Left side view.

[0038] Fig.16 yes Fig.12 Top view of the .

[0039] Fig.17 yes Fig.12 Bottom view of .

[0040] Fig.18 It is shown from the front right side Fig.12 Stereoscopic diagram.

[0041] Fig.19 It is shown from the bottom right. Figure 1 Stereoscopic diagram. DETAILED DESCRIPTION

[0042] Hereinafter, a vibration isolation device bracket 1 according to several embodiments of the present invention will be described with reference to the drawings.

[0043] Figure 1 It is a front view of a vibration isolation device bracket 1A (also simply referred to as “bracket 1A”) according to a first embodiment of the present invention. Figure 1 This is a so-called vehicle installation left and right direction view when the bracket 1A is mounted on the vehicle and the bracket 1A is viewed from the left and right directions of the vehicle. Figure 1 The figure is a diagram when the bracket 1A is viewed from the left side when mounted on the vehicle. Figure 1 The left direction is the front direction when the vehicle is installed. Figure 1 The right direction is the rear direction when the vehicle is installed. Figure 1 Set the upper direction of the vehicle installation to the upper direction. Figure 1 The downward direction is set to the downward direction when installed on the vehicle.

[0044] The bracket 1A of the present embodiment is a bracket for an engine mount. The bracket 1 can be connected to the vehicle body. The bracket 1A has a through hole A1. In the present embodiment, the through hole A1 is a through hole formed in the bracket body 2. The anti-vibration device body (not shown) can be accommodated in the through hole A1. The anti-vibration device body can be connected to the engine. Thus, the bracket 1A can connect the vehicle body and the engine with the aid of the anti-vibration device body.

[0045] In addition, the main body of the vibration isolating device is omitted in the drawings. As the main body of the vibration isolating device, for example, a vibration isolating member in which an inner tube and an outer tube are connected by an elastic body (such as rubber) can be cited. In the case of such a vibration isolating member, the outer tube is mounted on the bracket main body 2, and the inner tube is mounted on the engine.

[0046] However, the bracket 1A can connect the bracket body 2 to the engine and connect the vibration isolating device body to the vehicle body. In addition, the bracket 1A is not limited to a bracket for an engine mount. The bracket 1A can connect the bracket body 2 to one of the vibration generating side and the vibration receiving side other than the engine and the vehicle body, and connect the vibration isolating device body to the other of the vibration generating side and the vibration receiving side.

[0047] Reference numeral O is the center axis of the bracket 1A (hereinafter, also referred to as the "center axis O" for short). In the present embodiment, the center axis O is coaxial with the center axis of the through hole A1. In the present embodiment, the direction in which the center axis O extends is referred to as the "axial direction". In addition, in the present embodiment, "axial direction" is synonymous with the "left-right direction when installed on the vehicle". In addition, in the present embodiment, the direction orthogonal to the center axis O is referred to as the "axial direction". In addition, in the present embodiment, the "axial direction" includes the "front-rear direction when installed on the vehicle" and the "up-down direction when installed on the vehicle". Moreover, in the present embodiment, in a cross section (axial direction cross section) with the center axis O as a perpendicular line, the direction extending in a ring shape around the center axis O is referred to as the "circumferential direction".

[0048] The stent 1A includes a stent body 2 formed of a synthetic resin and a reinforcing member 3 formed of a fiber-reinforced plastic.

[0049] As the synthetic resin forming the stent body 2, for example, thermoplastic synthetic resin and thermosetting synthetic resin can be cited. Preferably, a thermoplastic synthetic resin is used as the synthetic resin. As such a thermoplastic synthetic resin, for example, nylon 6-6, nylon 6, nylon 9, polypropylene, etc. can be cited.

[0050] The support body 2 has a surrounding portion 20 surrounding the anti-vibration device body.

[0051] In the present embodiment, the surrounding portion 20 includes a first surrounding portion 21 and a second surrounding portion 22. The second surrounding portion 22 is a fixed base that can be fixed to the vehicle body. In the present embodiment, the second surrounding portion 22 includes an extension portion 22a that extends outward in the axial straight direction relative to the first surrounding portion 21. In the present embodiment, the extension portion 22a extends outward in the front-rear direction relative to the first surrounding portion 21 when installed in the vehicle.

[0052] The first surrounding portion 21 and the second surrounding portion 22 are integrally formed of the same synthetic resin. The through hole A1 is formed by the first surrounding portion 21 and the second surrounding portion 22. As described above, the vibration isolation device body can be accommodated in the through hole A1. At this time, the first surrounding portion 21 and the second surrounding portion 22 surround the vibration isolation device body together. Figure 1As shown, in the present embodiment, the first surrounding portion 21 is a bridge portion that is bridged on the second surrounding portion 22 in an arch shape when viewed from the left-right direction when mounted on the vehicle.

[0053] The reinforcing member arrangement portion 20a of the surrounding portion 20 is formed by an outer peripheral portion 211 extending in the surrounding direction, an inner peripheral portion 212 extending in the surrounding direction, and a connecting portion 213 connecting the outer peripheral portion 211 and the inner peripheral portion 212 and extending in the surrounding direction.

[0054] The surrounding direction refers to the direction in which the surrounding portion 20 extends around the central axis O. In the present embodiment, the surrounding direction is synonymous with the circumferential direction. In the present embodiment, the outer peripheral portion 211, the inner peripheral portion 212, and the connecting portion 213 are integrally formed of the same synthetic resin.

[0055] Figure 2 yes Figure 1 AA section view. Figure 2 The reinforcing member arrangement portion 20a is shown in a cross section orthogonal to the surrounding direction. Figure 2 In the embodiment, the cross section is an axial cross section formed by a plane including the central axis O. In addition, Figure 3 yes Figure 2 Magnified image of .

[0056] If you refer to Figure 3 When the reinforcing member configuration portion 20a is observed in a cross section perpendicular to the surrounding direction, the cross-sectional shape of the reinforcing member configuration portion 20a is an I-shape in which the cross-sectional width W3 of the connecting portion 213 is narrower than the cross-sectional width W1 of the outer peripheral portion 211 and the cross-sectional width W2 of the inner peripheral portion 212.

[0057] Furthermore, in the present embodiment, the cross-sectional width W2 of the inner peripheral portion 212 is narrower than the cross-sectional width W1 of the outer peripheral portion 211 .

[0058] Among them, if referring to Figure 3 , then the "section width" refers to the Figure 3 The axial width of the target portion (the outer peripheral portion 211, the inner peripheral portion 212, and the connecting portion 213) extending in the axial direction when the axial cross section is observed.

[0059] If you refer to Figure 3 In this embodiment, the outer peripheral portion 211 has a flat rectangular cross section along the axial direction when viewed from the axial cross section. The cross-sectional width W1 of the outer peripheral portion 211 is the width between the axial ends e1 of the outer peripheral portion 211. Figure 3 In this embodiment, the inner peripheral portion 212 has a flat rectangular cross section along the axial direction when viewed from the axial cross section. The cross-sectional width W2 of the inner peripheral portion 212 is the width between the axial ends e2 of the inner peripheral portion 212. Figure 3 In this embodiment, the connecting portion 213 has a flat rectangular cross section along the axial direction when viewed from the axial cross section. The cross-sectional width W3 of the connecting portion 213 is the width between the axial ends e3 of the connecting portion 213 that are closest to each other in the axial direction.

[0060] Moreover, in the present embodiment, the side surface f3 of the connecting portion 213 includes: an outer peripheral side curved surface f3a, which is connected to the inner peripheral side surface f1 of the outer peripheral portion 211 and is formed by an inwardly concave curve when observed from the cross section; and an inner peripheral side curved surface f3b, which is connected to the outer peripheral side surface f2 of the inner peripheral portion 212 and is formed by an inwardly concave curve when observed from the cross section.

[0061] If you refer to Figure 3 , then in this embodiment, the inner peripheral side surface f1 of the outer peripheral portion 211 is a plane formed by straight lines when viewed from an axial cross section. The inner peripheral side surface f1 of the outer peripheral portion 211 is connected to the axial end e1 of the outer peripheral portion 211 at an acute side angle α that is acute to the axial straight direction. Similarly, in this embodiment, the outer peripheral side surface f2 of the inner peripheral portion 212 is a plane formed by straight lines when viewed from an axial cross section. The outer peripheral side surface f2 of the inner peripheral portion 212 is connected to the axial end e2 of the inner peripheral portion 212 at an acute side angle β that is acute to the axial straight direction.

[0062] Moreover, if we refer to Figure 3 , then in this embodiment, the outer peripheral side curved surface f3a of the connecting portion 213 is a curve formed by a curve of a curvature radius r1 and is concave inwardly in the axial direction when viewed from an axial cross section. In addition, in this embodiment, the inner peripheral side curved surface f3b of the connecting portion 213 is a curve formed by a curve of a curvature radius r2 and is concave inwardly in the axial direction when viewed from an axial cross section. The curvature radius r1 and the curvature radius r2 can be set to the same curvature radius. Alternatively, the curvature radius r1 and the curvature radius r2 can be set to different curvature radii.

[0063] In the present embodiment, the inner peripheral surface f1 of the outer peripheral portion 211 , the outer peripheral surface f2 of the inner peripheral portion 212 , and the side surface f3 of the connecting portion 213 form a recess 23 extending in the surrounding direction in the reinforcement member arrangement portion 20 a of the surrounding portion 20 .

[0064] If you refer back Figure 1, then in this embodiment, the recess 23 has two surrounding direction end surfaces 214. The surrounding direction end surface 214 is a surface that forms the surrounding direction end of the recess 23. The surrounding direction end surface 214 defines the range in which the recess 23 extends in the surrounding direction. The surrounding direction end surface 214 is respectively connected to the inner peripheral side surface f1 of the outer peripheral portion 211, the outer peripheral side surface f2 of the inner peripheral portion 212, and the side surface f3 of the connecting portion 213. That is, in this embodiment, the recess 23 is formed by the outer peripheral portion 211, the inner peripheral portion 212, the connecting portion 213, and the surrounding direction end surface 214. Moreover, if referring to Figure 2 , in this embodiment, the surrounding direction end surface 214 is connected to the through hole A1. Therefore, in this embodiment, the recessed portion 23 is open to the through hole A1 at the surrounding direction end.

[0065] In addition, if you refer to Figure 2 , then in this embodiment, in the reinforcement member arrangement portion 20a of the surrounding portion 20, the cross-sectional width W2 of the inner peripheral portion 212 is substantially constant from the upper direction when installed in the vehicle through the central axis O to the lower direction when installed in the vehicle. However, in this embodiment, if Figure 2 As shown in FIG. 1 , the cross-sectional width W2 of the inner peripheral portion 212 widens as it moves from a predetermined position in the lower direction of the vehicle installation direction relative to the center axis O toward the second surrounding portion 22. In the present embodiment, when the cross-sectional width W2 approaches a certain distance relative to the second surrounding portion 22, it becomes the maximum width of the cross-sectional width W2. Furthermore, the cross-sectional width W2 narrows as it moves further toward the second surrounding portion 22 from the maximum width of the cross-sectional width W2. Referring to FIG. Figure 7 and Figure 8 , in the present embodiment, the axial end e2 of the inner peripheral portion 212 is formed by a curve having a curvature radius r22 near the second surrounding portion 22.

[0066] The reinforcing member arrangement portion 20a of the surrounding portion 20 is reinforced by arranging the reinforcing member 3. The reinforcing member 3 is formed of fiber reinforced plastic (FRP).

[0067] (Continuous) fiber reinforced plastic is a composite material in which the fibrous elements contain synthetic resin to improve the strength. As the fiber reinforced plastic, for example, prepreg can be cited. As the fibrous element, for example, glass fiber fabric, carbon fiber fabric, metal fiber fabric, organic fiber, fiber fabric with a bending strength higher than the bending strength of the bracket body 2, and other objects containing these fabrics can be cited. Preferably, glass fiber fabric is used as the fibrous element. In addition, as the fiber reinforced plastic, for example, UD (Uni Direction) material in which the directional fibrous elements contain synthetic resin, and fabric material in which the woven fibrous elements contain synthetic resin can be cited. The bracket 1 can be formed integrally by injection molding, for example, with the reinforcing member 3 as an insert. In the bracket 1 of the present embodiment, for example, the fibrous elements are arranged in a direction pointing to the surrounding direction.

[0068] If you refer to Figure 1 , the reinforcing member 3 extends in the surrounding direction of the surrounding portion 20 and is arranged in the surrounding portion 20 .

[0069] In this embodiment, the reinforcing member 3 is disposed in the first surrounding portion 21. Figure 1 In the figure, reference numeral 3e1 is one end of the reinforcing member 3 in the extending direction. In addition, reference numeral 3e2 is the other end of the reinforcing member 3 in the extending direction. The reinforcing member 3 is a strip-shaped reinforcing member. Figure 2 In this embodiment, the cross-sectional width of the reinforcing member 3 is equal to the cross-sectional width W1 of the outer peripheral portion 211. Specifically, the axial end 3e3 of the reinforcing member 3 is aligned with the axial end e1 of the outer peripheral portion 211. Figure 4 and Figure 5 , then in this embodiment, the cross-sectional width W4 of the reinforcing member 3 is constant along the surrounding direction. Therefore, in this embodiment, in the first surrounding portion 21, the cross-sectional width W1 of the outer peripheral portion 211 is constant along the surrounding direction.

[0070] If you refer to Figure 5 In this embodiment, two fixing holes 22h are formed in the second surrounding portion 22. Figure 5 As shown in FIG. 1 , the two fixing holes 22h are arranged at intervals in the axial direction across the first surrounding portion 21 when viewed from above. In the present embodiment, the fixing holes 22h are arranged in a recess 2c provided in the bracket body 2. The recess 2c is a shape formed by cutting away a portion of the first surrounding portion 21. In the present embodiment, as shown in FIG. Figure 4 and Figure 5 As shown, the recess 2c is formed by the extension portion 22a of the second surrounding portion 22 and the two ridge ribs 24. In the present embodiment, the fixing hole 22h is formed in the fastening tool 25 attached to the extension portion 22a of the recess 2c.

[0071] In addition, if you refer to Figure 5 In this embodiment, the reinforcing member 3 is arranged in a manner to equally reinforce the front and rear directions of the reinforcing member arrangement portion 20a when installed on the vehicle across the central axis O. However, the portion reinforced by the reinforcing member 3 may be different in the front-rear direction when installed on the vehicle.

[0072] Furthermore, in the present embodiment, the reinforcing member 3 is arranged on the outer peripheral portion 211 of the reinforcing member arrangement portion 20 a .

[0073] If you refer to Figure 7 and Figure 8 In this embodiment, the reinforcing member 3 covers the outer peripheral surface of the outer peripheral portion 211 of the reinforcing member arrangement portion 20a at the reinforcing member arrangement portion 20a of the surrounding portion 20 of the stent body 2. Thus, in this embodiment, the reinforcing member 3 forms the outer peripheral surface of the stent 1 at the reinforcing member arrangement portion 20a of the stent body 2.

[0074] Such a vibration isolating device bracket accommodates the vibration isolating device main body in the through hole A1 formed by the surrounding portion 20 . Therefore, stress is easily concentrated on the surrounding portion 30 .

[0075] In contrast, conventional anti-vibration device brackets include a bracket for anti-vibration device in which a reinforcing member formed of fiber reinforced plastic is fixed to the outer periphery of a surrounding portion of a bracket body formed of synthetic resin for the purpose of achieving both weight reduction and improved durability.

[0076] However, the cross-sectional shape of the surrounding portion of the conventional anti-vibration device bracket when viewed from a cross section orthogonal to the surrounding direction is a rectangle. Therefore, in the case of the conventional anti-vibration device bracket, there is room for improvement in terms of seeking further weight reduction while ensuring durability, or in other words, seeking further improvement in durability without increasing weight.

[0077] In contrast, Figure 2 As shown, in the bracket 1A, in the surrounding portion 20 of the bracket body 2, the reinforcing member configuration part 20a of the surrounding portion 20 is formed by an outer peripheral portion 211 extending in the surrounding direction, an inner peripheral portion 212 extending in the surrounding direction, and a connecting portion 213, which connects the outer peripheral portion 211 and the inner peripheral portion 212 and extends in the surrounding direction.

[0078] In addition, if Figure 3As shown in the figure, when the reinforcing member arrangement portion 20a of the bracket body 2 is viewed from a cross section perpendicular to the surrounding direction, the cross-sectional shape of the reinforcing member arrangement portion 20a is an I-shaped shape in which the cross-sectional width W3 of the connecting portion 213 is narrower than the cross-sectional width W1 of the outer peripheral portion 211 and the cross-sectional width W2 of the inner peripheral portion 212. In other words, in the bracket 1A, the cross-sectional shape of the reinforcing member arrangement portion 20a of the surrounding portion 20 of the bracket body 2 is set to the shape of a track such as a train track.

[0079] According to the bracket 1A, by making the cross-sectional shape of the reinforcing member arrangement portion 20a of the bracket body 2 into an I-shape, the amount of resin used can be reduced compared to conventional brackets having a rectangular cross-sectional shape of the surrounding portion.

[0080] In addition, according to the bracket 1A, the cross-sectional shape of the reinforcing member arrangement part 20a of the bracket body 2 is set to an I-shape, and the axial length of the connecting part 213 is ensured, so that the cross-sectional shape of the reinforcing member arrangement part 20a of the bracket body 2 in the center of the cross-sectional width direction (axial direction) of the reinforcing member arrangement part 20a of the bracket body 2 can be ensured to be larger in the axial direction. As a result, the strength and rigidity of the bracket body 2 can be improved. Moreover, according to the bracket 1A, by setting the cross-sectional shape of the reinforcing member arrangement part 20a of the bracket body 2 to an I-shape, the cross-sectional width W1 of the outer peripheral part 211 and the cross-sectional width W2 of the inner peripheral part 212 are ensured to be wider, so that the area of ​​the bracket body 2 that bears the load can be ensured to be larger. As a result, the load borne by the bracket body 2 can be dispersed in the cross-sectional width direction. Therefore, compared with the conventional resin bracket whose surrounding part has a rectangular cross-sectional shape, the bracket body 2 can seek further improvement in durability.

[0081] Therefore, according to the bracket 1A, the cross-sectional shape of the reinforcing member arrangement portion 20a is set to an I-shape, thereby achieving further weight reduction while ensuring durability. In other words, according to the bracket 1A, the durability can be further improved without increasing the weight.

[0082] In the stent 1A, the cross-sectional width W2 of the inner peripheral portion 212 is narrower than the cross-sectional width W1 of the outer peripheral portion 211. In this case, the weight can be further reduced by the narrowing of the cross-sectional width W2 of the inner peripheral portion 212.

[0083] In addition, in the bracket 1A, the side surface f3 of the connecting portion 213 includes an outer peripheral side curved surface f3a formed by an inwardly concave curve and an inner peripheral side curved surface f3b formed by an inwardly concave curve. In this case, when a load is input, the stress concentration generated in the bracket body 2 is reduced, thereby improving durability.

[0084] In the bracket 1A, the inner peripheral side surface f1 of the outer peripheral portion 211, the outer peripheral side surface f2 of the inner peripheral portion 212, and the side surface f3 of the connecting portion 213 form a recessed portion 23 extending in the surrounding direction at the reinforcing member arrangement portion 20a of the surrounding portion 20. In this case, the manufacturing quality can be easily ensured.

[0085] If a thickened portion such as a reinforcing rib is provided on the surrounding portion 20 , the surrounding portion 20 can be reinforced.

[0086] However, when the thickened portion is provided in the surrounding portion 20, the resin flow tends to merge and diverge during injection molding. Therefore, in this case, it is necessary to suppress the weld line that may be generated in the product or to control it so that it is not noticeable, and it is difficult to ensure the manufacturing quality.

[0087] In contrast, in the bracket 1A, the recess 23 is formed by the inner peripheral side surface f1 of the outer peripheral portion 211, the outer peripheral side surface f2 of the inner peripheral portion 212, and the side surface f3 of the connecting portion 213, and the thickened portion does not exist. In this case, the area of ​​the inner peripheral portion 212 side that bears the load from the anti-vibration device body can be ensured, and the area of ​​the outer peripheral portion 211 side where the stress is generated is increased, and the cross-sectional area of ​​the connecting portion 213 is reduced. As a result, the product is lightweight (no excess material), and the resin flow is uniform during the injection molding of the bracket 1A, making it easy to apply the reinforcing member 3. Therefore, according to the bracket 1A, it is easy to ensure the manufacturing quality.

[0088] In addition, the bracket 1A can be provided with a gate mark G obtained by injection molding on the inner peripheral surface f1 of the outer peripheral portion 211. In this case, the reinforcing member 3 can be firmly fixed to the bracket body 2 without impairing the appearance.

[0089] As a molding method of the stent 1A, for example, so-called hybrid molding is exemplified in which the reinforcing member 3 is used as an insert and is injection-molded together with the stent body 2 .

[0090] However, in such a mixed molding, the synthetic resin supplied to the mold may unexpectedly spread to the outer peripheral surface side of the reinforcing member 3. Such spreading of the synthetic resin may sometimes damage the appearance of the outer peripheral surface of the reinforcing member 3 when the product is completed. On the other hand, in order to prevent the spreading of the synthetic resin, it is conceivable to arrange the gate for injection molding at a position away from the reinforcing member 3 in the mold. However, in this case, the synthetic resin is injected from a position away from the reinforcing member 3 in the mold, and the pressure for making the synthetic resin and the reinforcing member 3 close together may become insufficient.

[0091] In contrast, for example, if we refer to Figure 3, in the bracket 1A, the gate mark G is formed on the inner peripheral side surface f1 of the outer peripheral portion 211 in the bracket main body 2. In other words, when the bracket 1A is injection molded together with the bracket main body 2 using the reinforcing member 3 as an insert, the synthetic resin in the mold is supplied from the inner peripheral surface of the reinforcing member 3. In this way, if the synthetic resin is supplied from the inner peripheral surface of the reinforcing member 3, it is possible to suppress the spread of the resin to the outer peripheral surface of the reinforcing member 3. In addition, in this case, the synthetic resin is injected from a position close to the reinforcing member 3 in the mold, so that the pressure for making the synthetic resin and the reinforcing member 3 fit tightly can be increased.

[0092] In particular, in the bracket 1A, the gate mark G is formed in the region including the axial corner 2e of the outer peripheral portion 211. The axial corner 2e of the outer peripheral portion 211 is a portion where the axial end e1 of the outer peripheral portion 211 is connected to the inner peripheral side surface f1. In other words, the synthetic resin in the mold is supplied from the inner peripheral surface side of the reinforcing member 3 near the axial end 3e3 of the reinforcing member 3. In this case, the synthetic resin is supplied in a manner that the axial end 3e3 of the reinforcing member 3 is pressed against the mold, so that the spread of the resin to the outer peripheral surface of the reinforcing member 3 can be effectively suppressed.

[0093] Moreover, in the bracket 1A, the gate mark G extends from the axial corner 2e of the outer peripheral portion 211 to the boundary between the bracket body 2 and the reinforcing member 3 (the outer peripheral surface 2f of the outer peripheral portion 211 (the bracket body 2)). In other words, the synthetic resin in the mold is pressed and supplied to the mold at a certain input angle (an acute angle exceeding 0 degrees other than 90 degrees) at the position closest to the axial end 3e3 of the reinforcing member 3 relative to the inner peripheral surface of the reinforcing member 3. In this case, the synthetic resin is injected from the inner peripheral side of the outer peripheral portion 211 closest to the reinforcing member 3, so that the spread of the resin to the outer peripheral surface of the reinforcing member 3 can be further suppressed.

[0094] In addition, if you refer to Fig. 9 and Fig.10 , then the gate mark G is formed on both sides of the axial direction. However, the gate mark G only needs to be formed on at least one of the one axial side and the other axial side. In the present embodiment, the gate mark G is formed on both sides of the left and right directions when the vehicle is installed. In addition, the gate mark G is formed one on each side of the axial direction and the other side. However, at least one gate mark G can be provided on at least one side of the one axial side and the other side. In the present embodiment, the gate mark G is formed one on each side of the left and right directions when the vehicle is installed, and one in the rear direction when the vehicle is installed. In addition, Fig.11 It is shown from the right front plane side Figure 1 A three-dimensional diagram of the AA section. Fig.11 , if viewed from the rear side of the vehicle when installed, Figure 2The AA section is as follows Fig.11 In this way there is no gate mark G.

[0095] Fig.12 It is a front view of a bracket 1B for a vibration isolation device (also simply referred to as a "bracket 1B") according to a second embodiment of the present invention.

[0096] The stent 1B includes a stent body 2 formed of a synthetic resin and a reinforcing member 3 formed of a fiber-reinforced plastic, similarly to the stent 1A.

[0097] Similar to the stent 1A, the stent body 2 has a surrounding portion 20, and the surrounding portion 20 has a first surrounding portion 21 and a second surrounding portion 22. Fig.13 In this embodiment, similar to the bracket 1A, the first surrounding portion 21 is formed by an outer peripheral portion 211 extending in the surrounding direction, an inner peripheral portion 212 extending in the surrounding direction, and a connecting portion 213, which connects the outer peripheral portion 211 and the inner peripheral portion 212 and extends in the surrounding direction.

[0098] On the other hand, according to the present invention, the cross-sectional width W1 of the outer peripheral portion 211 can be the same as or narrower than the cross-sectional width W2 of the inner peripheral portion 212. Fig.14 , in this embodiment, the cross-sectional width W1 of the outer peripheral portion 211 is narrower than the cross-sectional width W2 of the inner peripheral portion 212 .

[0099] When the cross-sectional width W1 of the outer peripheral portion 211 is the same as or narrower than the cross-sectional width W2 of the inner peripheral portion 212 as in the present embodiment, the design emphasizes the strength / rigidity of the inner peripheral portion 211 that directly bears the load received from the anti-vibration device body, and thus the strength / rigidity balance between the outer peripheral portion 211 and the inner peripheral portion 212 as the whole of the bracket body 2 becomes good. Therefore, according to the bracket 1B, the strength balance between the outer peripheral portion 211 and the inner peripheral portion 212 can be made good, and further weight reduction can be achieved while improving durability. Specifically, if the cross-sectional width W1 of the outer peripheral portion 211 is the same as or narrower than the cross-sectional width W2 of the inner peripheral portion 212, for example, the starting point of the destruction of the whole bracket body 2 can be made uniform, and by making the starting point of the destruction uniform, it can be set to be able to use the reinforcing member 3 efficiently for the bracket body 2. Furthermore, according to the present embodiment, since the strength and rigidity balance between the outer peripheral portion 211 and the inner peripheral portion 212 is good, the thickness d of the reinforcing member 3 can be thinner than the thickness of the reinforcing member 3 of the stent 1A.

[0100] In addition, if you refer to Fig.14In this embodiment, the inner peripheral side surface f4 of the inner peripheral portion 212 has a profile convex toward the inner peripheral side when viewed from an axial cross section (ie, when viewed from a cross section orthogonal to the circumferential direction).

[0101] The inner peripheral side surface f4 of the inner peripheral portion 212 becomes the mounting surface of the main body of the prevention device. Loads from various directions are input into the main body of the prevention device. In addition, the inner peripheral portion 212 is connected to a connecting portion 213 in the center of the cross-sectional width direction (axial direction). Therefore, if the load input is concentrated in the upper and lower directions of the inner peripheral portion 212 on the side of the axial end e2 of the inner peripheral portion 212 when installed in the vehicle due to the load input from the main body of the prevention device (for example, due to the contact between the main body of the prevention device and the inner peripheral portion 212), for example, the part on the side of the axial end e2 of the inner peripheral portion 212 may be displaced. Therefore, such load input concentration may become one of the main forms of failure of the bracket, and therefore, it is preferred to suppress such load input concentration.

[0102] If you refer to Fig.14 , then in this embodiment, the shape of the inner peripheral side surface f4 of the inner peripheral portion 212 becomes a shape that is convex to the inside when viewed from the axial cross section. Thus, according to this embodiment, the load input concentration that may occur when the load is input can be suppressed. Therefore, according to this embodiment, the durability can be further improved.

[0103] In addition, if you refer to Fig.14 In this embodiment, the axial center portion f4a of the inner peripheral side surface f4 in the convex profile is formed by a curve C convex toward the outside. In this embodiment, the curve C is a circular arc curve with a curvature radius r4.

[0104] In the bracket 1B, the axial center portion f4a of the inner peripheral side surface f4 is the portion to which the load input is the largest. Therefore, if the axial center portion f4a of the inner peripheral side surface f4 is formed by a curve C that bulges toward the outside, the stress concentration generated in the axial center portion f4a of the inner peripheral side surface f4 can be alleviated. Therefore, according to this embodiment, the durability can be further improved.

[0105] Furthermore, according to the present invention, the entire axial shape of the inner peripheral surface f4 of the inner peripheral portion 212 can be formed by one of the above-mentioned curves C, or by a combination of one of the above-mentioned curves C and a plurality of curves.

[0106] In contrast, if we refer to Fig.14, then in this embodiment, the axial end side portion f4b (more specifically, the two end side portions f4b, f4b) of the inner peripheral side surface f4 in the protruding profile is formed by a straight line L. In this embodiment, the straight line L is connected to the axial central portion f4a of the inner peripheral side surface f4 at an acute angle γ that is acute to the axial straight direction. In this case, further weight reduction can be sought. In addition, according to the present invention, the axial central portion f4a of the inner peripheral side surface f4 can be formed by one or more straight lines, one or more curves, or a combination thereof (excluding the case of only one straight line).

[0107] Moreover, in this embodiment, similar to the bracket 1A, the inner peripheral side surface f1 of the outer peripheral portion 211, the outer peripheral side surface f2 of the inner peripheral portion 212, and the side surface f3 of the connecting portion 213 form a recess 23 extending in the surrounding direction in the reinforcement member configuration portion 20a of the surrounding portion 20.

[0108] If you refer back Fig.12 In this embodiment, similarly to the bracket 1A, the recessed portion 23 is formed by the outer peripheral portion 211, the inner peripheral portion 212, the connecting portion 213, and the surrounding direction end surface 214. Fig.13 In this embodiment, the surface 214 at the end in the surrounding direction is connected to the through hole A1. Therefore, in this embodiment, similarly to the bracket 1A, the recess 23 is open to the through hole A1 at the end in the surrounding direction.

[0109] In addition, if you refer to Fig.13 In this embodiment, at the upper part of the surrounding part 20 (the part where the first surrounding part 21 is installed), the cross-sectional width W2 of the inner peripheral part 212 is substantially constant from the upper direction when installed in the vehicle to the lower direction when installed in the vehicle. Fig.13 As shown in FIG. 1 , the cross-sectional width W2 of the inner peripheral portion 212 widens as it moves from the central axis O toward the second surrounding portion 22. Also, the cross-sectional width W2 is the maximum width near the second surrounding portion 22. Fig.13 In this embodiment, at the upper part of the surrounding portion 20 (the part where the first surrounding portion 21 is installed), the cross-sectional width W1 of the outer peripheral portion 211 is substantially constant from the upper direction when installed in the vehicle to the lower direction when installed in the vehicle. Fig.13 As shown, the cross-sectional width W1 of the outer peripheral portion 211 increases as it moves from a predetermined position of the connecting portion 213 toward the central axis O. Fig.13 As shown, the cross-sectional width W1 of the outer peripheral portion 211 is a constant width (maximum width of the cross-sectional width W1 ) from a predetermined position in the through hole A1 that is upward relative to the center axis O when mounted on the vehicle toward the second surrounding portion 22 .

[0110] In the present embodiment, reinforcing member 3 is disposed similarly to stent 1A to reinforce surrounding portion 20 of stent body 2. In the present embodiment, reinforcing member 3 is formed of fiber reinforced plastic (FRP) similarly to stent 1A.

[0111] If you refer to Fig.14 , in this embodiment, the cross-sectional width W4 of the reinforcing member 3 is equal to the cross-sectional width W1 of the outer peripheral portion 211 at the upper portion of the surrounding portion 20 (the portion where the first surrounding portion 21 is installed). The cross-sectional width W4 of the reinforcing member 3 is the width between the axial ends 3e3 of the reinforcing member 3. Fig.15 , in this embodiment, similarly to the bracket 1A, the cross-sectional width W4 of the reinforcing member 3 is constant along the surrounding direction. However, in this embodiment, as described above, in the first surrounding portion 21, the cross-sectional width W1 of the outer peripheral portion 211 widens toward the second surrounding portion 22 when approaching the second surrounding portion 22 to a certain distance along the surrounding direction. And, the cross-sectional width W1 becomes the maximum width near the second surrounding portion 22.

[0112] However, when the surrounding portion 20 is subjected to a load in the lateral direction (for example, in the front-to-rear direction when installed in the vehicle), the load is concentrated on the portion of the through hole A1 where the lateral width is the largest, which is the portion of the first surrounding portion 21 at the height of the center axis O in the vertical direction when installed in the vehicle in the present embodiment. On the other hand, the other side end 3e1 and the other side end 3e2 of the reinforcing member 3 in the extension direction are the boundaries with the bracket body 2 made of different materials. Therefore, when the surrounding portion 20 is subjected to a large load in the lateral direction, stress concentration may occur at the other side end 3e1 and the other side end 3e2 of the reinforcing member 3 in the extension direction. Therefore, it is preferred that the other side end 3e1 and the other side end 3e2 of the reinforcing member 3 in the extension direction are located at a position lower than the height of the center axis O where the lateral width of the through hole A1 is the largest (close to the second surrounding portion 22).

[0113] For example, if you refer to Figure 4 , in the bracket 1A, the reinforcing member 3 extends to a position closer to the lower part (second surrounding part 22) of the surrounding part 20 than the reinforcing member 3 of the bracket 1A. Therefore, according to the bracket 1A, by positioning the other side end 3e1 and the other side end 3e2 of the reinforcing member 3 in the extension direction at a position lower than the height of the central axis O where the lateral width of the through hole A1 is the largest, it is possible to reduce stress concentration that may be generated at the other side end 3e1 and the other side end 3e2 in the extension direction. Therefore, according to the bracket 1A, it is possible to further improve durability.

[0114] On the other hand, as for the reinforcing member 3, the cross-sectional width W1 of the outer peripheral portion 211 is narrower than the cross-sectional width W2 of the inner peripheral portion 212, the cross-sectional width W4 of the reinforcing member 3 can be suppressed to be narrower than the cross-sectional width of the reinforcing member 3 of the bracket 1A. Fig.15 In this embodiment, the cross-sectional width W4 of the reinforcing member 3 is suppressed to be narrower than the cross-sectional width of the reinforcing member 3 of the bracket 1A, so that the reinforcing member 3 can be extended to the recess 2c provided in the bracket body 2. Fig.15 As shown in FIG. 1 , the other side end 3e1 and the other side end 3e2 of the reinforcing member 3 in the extension direction are arranged in the recess 2c provided in the bracket body 2. Therefore, according to the present embodiment, the cross-sectional width W4 of the reinforcing member 3 is suppressed to be narrower than the cross-sectional width of the reinforcing member 3 of the bracket 1A, and the reinforcing member 3 can be extended to a position closer to the second surrounding portion 22 than the reinforcing member 3 of the bracket 1A. Therefore, according to the present embodiment, the durability can be further improved according to the reinforcing member 3 extending to a position closer to the second surrounding portion 22 than the reinforcing member 3 of the bracket 1A.

[0115] In addition, in the present embodiment, similarly to the bracket 1A, the recess 2c provided in the bracket body 2 is formed by the second surrounding portion 22 and the two ridge ribs 24. On the other hand, in the present embodiment, the reinforcing member 3 is as described above, and the cross-sectional width W1 of the outer peripheral portion 211 is narrower than the cross-sectional width W2 of the inner peripheral portion 212. Therefore, according to the present embodiment, as described above, the reinforcing member 3 can pass between the two ridge ribs 24. In other words, according to the present embodiment, the two ridge ribs 24 can be extended upward when installed in the vehicle without interfering with the reinforcing member 3. For example, if referring to Figure 1 , then in the bracket 1A, the ridge lines L24 of the two ridge ribs 24 are curved lines that are concave toward the inside. Fig.15 , in this embodiment, the ridge lines L24 of the two ridge ribs 24 are straight lines. That is, in this embodiment, the area of ​​the ridge ribs 24 is enlarged compared to the area of ​​the ridge ribs 24 of the bracket 1A. Therefore, according to this embodiment, the durability can be further improved by enlarging the area of ​​the ridge ribs 24 relative to the area of ​​the ridge ribs 24 of the bracket 1A.

[0116] However, if we refer to Fig.16 The bracket 1B is provided with a fastener 25 on the bracket body 2 similarly to the bracket 1A, and is connected to the engine etc. by fastening elements (eg bolts) passing through the fixing holes 22h of the fastener 25.

[0117] On the other hand, if we refer to Fig.17In this embodiment, a plurality of bottom ribs 26 are formed at the bottom of the bracket body 2, and the plurality of bottom ribs 26 extend in the axial direction and are arranged at intervals in the axial direction. The thickness t26 of the plurality of bottom ribs 26 is thicker as the bottom rib 26 is closer to the axial center. In this case, the weight can be further reduced.

[0118] If you refer to Fig.17 , the reference numeral RC is the center region in the left-right direction when mounted on the vehicle between the fasteners 25 (hereinafter also referred to as "left-right center region RC"). When the bracket 1B is mounted on the vehicle body for use, a large load may act on the left-right center region RC.

[0119] If you refer to Fig.17 , then in this embodiment, seven bottom ribs 26 are formed on the bottom surface of the second surrounding portion 22, namely, a central bottom rib (first bottom rib) 26a, two second bottom ribs 26b, two third bottom ribs 26c, and two fourth bottom ribs 26d. In this embodiment, the central bottom rib 26a extends in the axial straight direction (up and down direction when installed on the vehicle) along the left and right central regions RC. The two second bottom ribs 26b are respectively arranged outside the central bottom rib 26a in the axial direction (left and right direction when installed on the vehicle), and are spaced apart from the central bottom rib 26a in the axial direction. The two third bottom ribs 26c are respectively arranged outside the axial direction (left and right direction when installed on the vehicle), and are spaced apart from the second bottom rib 26b in the axial direction. The two fourth bottom ribs 26d are respectively arranged outside the axial direction (left and right direction when installed on the vehicle), and are spaced apart from the third bottom rib 26c in the axial direction. In the present embodiment, the thickness t26 of the bottom rib 26 is the thickness (width) in the axial direction (left-right direction when mounted on the vehicle).

[0120] If you refer to Fig.17 , the thickness t26a of the central bottom rib 26a is the thickest (widest) among all the bottom ribs 26. The thickness t26b of the second bottom rib 26b is thinner (narrower) than the thickness t26a of the central bottom rib 26a. The thickness t26c of the third bottom rib 26c is thinner than the thickness t26b of the second bottom rib 26b. The thickness t26d of the fourth bottom rib 26d is thinner than the thickness t26c of the third bottom rib 26c. That is, in the present embodiment, the thickness t26d of the fourth bottom rib 26d is the thinnest among all the bottom ribs 26. According to the present embodiment, the thickness t26a of the central bottom rib 26a located in the left and right central region RC is ensured to be the thickest, and the thickness t26 of the bottom rib 26 is made thinner as it moves away from the left and right central region RC, thereby achieving further weight reduction.

[0121] In addition, if you refer back to Fig.13 In this embodiment, a plurality of bottom grooves 27 are formed on the bottom surface of the bracket body 2, and the plurality of bottom grooves 27 extend in the axial direction and are arranged at intervals in the axial direction. In addition, in this embodiment, the bottom rib 26 is a rib formed between the plurality of bottom grooves 27. Moreover, in this embodiment, the depth of the plurality of bottom grooves 27 is deeper as the bottom groove 27 is closer to the axial center. In this case, it is possible to achieve weight reduction and at the same time further improve durability.

[0122] If you refer to Fig.13 In this embodiment, six bottom grooves 27 are formed on the bottom surface of the second surrounding portion 22, namely, two central bottom grooves (first bottom grooves) 27a, two second bottom grooves 27b, and two third bottom grooves 27c. In this embodiment, the two central bottom grooves 27a have a central bottom rib 26a formed between the two central bottom grooves 27a. The second bottom groove 27b has a second bottom rib 26b formed between the second bottom groove 27b and the central bottom groove 27a. The third bottom groove 27c has a third bottom rib 26c formed between the third bottom groove 27c and the second bottom groove 27b. Moreover, the third bottom groove 27c has a fourth bottom rib 26d formed outside the third bottom groove 27c in the axial direction (left-right direction when mounted on the vehicle). In addition, in this embodiment, the depth d26 of the bottom groove 27 is the depth in the axial straight direction (up-down direction when mounted on the vehicle).

[0123] If you refer to Fig.13 , the depth d27a of the two central bottom grooves 27a is the deepest among all the bottom grooves 27. The depth d27b of the second bottom groove 27b is shallower than the depth d27a of the central bottom groove 27a. The depth d27c of the third bottom groove 27c is shallower than the depth d27b of the second bottom groove 27b. That is, in the present embodiment, the depth d27c of the third bottom groove 27c is the shallowest among all the bottom grooves 27. According to the present embodiment, the depth d27a of the central bottom groove 27a located in the left and right central region RC is ensured to be the deepest, and the depth d27 of the bottom groove 27 is made shallower as it moves away from the left and right central region RC, thereby achieving weight reduction and further improving durability.

[0124] In addition, Fig.18 1B is shown from the front left. Fig.19 The bracket 1B is shown from the bottom left.

[0125] The above content merely illustrates one embodiment of the present invention, and various modifications can be made according to the claims. For example, the form (shape) of the surrounding portion 20 is not limited to the form (shape) of the above embodiment.

[0126] For example, the surrounding portion 20 is elliptical when viewed from the axial direction, but can also be various shapes such as a perfect circle or a rectangular shape. Figure 1 , Fig.12 In the above-mentioned embodiments, the outer peripheral surface of the reinforcing member 3 is aligned with the outer surface of the surrounding portion 20 of the bracket body 2, but by making the outer peripheral surface of the reinforcing member 3 protrude outward relative to the outer surface of the surrounding portion 20, a step can be provided between the outer peripheral surface of the reinforcing member 3 and the outer surface of the surrounding portion 20. In addition, in the above-mentioned embodiments, the reinforcing member 3 is embedded in the surrounding portion 20 of the bracket body 2 as the outer peripheral surface of the bracket 1 in a manner that can be visually recognized from the outside, but it can also be completely embedded in the surrounding portion 20 in a manner that cannot be visually recognized from the outside. In addition, if referring to Figure 6 , Fig.17 , then the mounting surface of the second surrounding portion 22 is formed by a plane. However, the mounting surface of the second surrounding portion 22 can also be formed by a surface having a shape corresponding to the shape of the mounting side of the vehicle body, etc. Moreover, the various structures adopted in the above-mentioned embodiments can be appropriately replaced or combined with each other.

[0127] Description of Reference Numerals

[0128] 1. 1A, 1B, support for vibration-proof device; A1, through hole; 2, support body; 20, surrounding portion; 20a, reinforcing member arrangement portion; 21, first surrounding portion; 211, outer peripheral portion; 212, inner peripheral portion; 213, connecting portion; 22, second surrounding portion; 23, recessed portion; 25, fastening tool; 26, bottom rib; 26a, central bottom rib (first bottom rib); 26b, second bottom rib; 26c, third bottom rib; 26d, fourth bottom rib; 27, bottom groove; 27a, central bottom groove (first bottom groove); 27b, first 2 bottom groove; 27c, 3 bottom groove; 3, reinforcing member; f1, inner peripheral side surface of the outer peripheral part; f2, outer peripheral side surface of the inner peripheral part; f3, side surface of the connecting part; f3a, outer peripheral side curved surface; f3b, inner peripheral side curved surface; f4, inner peripheral side surface of the inner peripheral part; f4a, axial center part of the inner peripheral side surface; f4b, axial end side part of the inner peripheral side surface; G, gate mark; O, center axis; W1, cross-sectional width of the outer peripheral part; W2, cross-sectional width of the inner peripheral part; W3, cross-sectional width of the connecting part; W4, cross-sectional width of the reinforcing member.

Claims

1. A support for a vibration isolating device, comprising: a support body formed of a synthetic resin; and a reinforcing member formed of a fiber reinforced plastic, wherein the support body has a surrounding portion surrounding the vibration isolating device body, the reinforcing member extends in a surrounding direction of the surrounding portion and is arranged in the surrounding portion, wherein: The reinforcement member arrangement portion of the surrounding portion is formed by an outer peripheral portion extending in the surrounding direction, an inner peripheral portion extending in the surrounding direction, and a connecting portion connecting the outer peripheral portion and the inner peripheral portion and extending in the surrounding direction. When the reinforcing member arrangement portion is observed from a cross section orthogonal to the surrounding direction, the cross-sectional shape of the reinforcing member arrangement portion is an I-shape in which the cross-sectional width of the connecting portion is narrower than the cross-sectional width of the outer peripheral portion and the cross-sectional width of the inner peripheral portion. The reinforcing member is arranged on the outer peripheral portion of the reinforcing member arrangement portion.

2. The vibration isolation device bracket according to claim 1, wherein: The cross-sectional width of the inner peripheral portion is narrower than the cross-sectional width of the outer peripheral portion.

3. The vibration isolation device bracket according to claim 1, wherein: The cross-sectional width of the outer peripheral portion is the same as or narrower than the cross-sectional width of the inner peripheral portion.

4. The vibration isolating device bracket according to any one of claims 1 to 3, wherein: The inner peripheral side surface of the inner peripheral portion has a profile convex toward the inner peripheral side when viewed from a cross section orthogonal to the surrounding direction.

5. The vibration isolation device bracket according to claim 4, wherein: An axially central portion of the inner peripheral side surface in the convex profile is formed by a curved line convex toward the outside.

6. The vibration isolation device support according to claim 4 or 5, wherein: An axial end side portion of the inner peripheral side surface in the contour of the projection is formed by a straight line.

7. The vibration isolation device bracket according to any one of claims 1 to 6, wherein: A plurality of bottom ribs are formed at the bottom of the bracket body. The plurality of bottom ribs extend in the axial direction and are arranged at intervals in the axial direction. The thickness of the plurality of bottom ribs is thicker as the bottom rib is closer to the axial center of the bottom.

8. The vibration isolating device bracket according to any one of claims 1 to 7, wherein: The inner peripheral surface of the outer peripheral portion has a gate mark of injection molding.

9. The support for a vibration isolating device according to any one of claims 1 to 8, wherein: The side surface of the connecting portion includes: a curved surface connected to the inner peripheral side surface of the outer peripheral portion and formed by an inwardly concave curve when viewed from the cross section; and a curved surface connected to the outer peripheral side surface of the inner peripheral portion and formed by an inwardly concave curve when viewed from the cross section.

10. The vibration isolating device bracket according to any one of claims 1 to 9, wherein: The inner peripheral side surface of the outer peripheral portion, the outer peripheral side surface of the inner peripheral portion, and the side surface of the connecting portion form a recessed portion extending in the surrounding direction at the reinforcing member arrangement portion of the surrounding portion.

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