Liquid seal vibration isolation device with carrier
By using the interlocking structure of the metal connecting parts and the groove, the problems of damage and leakage during the assembly process of the liquid seal vibration damping device are solved, achieving high-efficiency load-bearing performance and stable assembly.
Patent Information
- Application Number
- CN202310134187.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2022-02-25
- Filing Date
- 2023-02-20
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2043-02-20
AI Technical Summary
Existing liquid-sealed vibration damping devices with brackets are easily damaged during assembly and pose risks of reduced sealing performance and leakage, especially under high load conditions, making it difficult to achieve load-bearing performance and anti-detachment effect.
The connecting parts and connecting grooves are made of metal. The metal contact between the engaging protrusion and engaging recess prevents dislodgement, and the elastic deformation of the applied rubber ensures smooth assembly and sealing performance, avoiding interference from the locking protrusion.
It improves the load-bearing capacity and reliability of the device, prevents damage and leakage during assembly, and ensures stable insertion and efficient assembly of the connection parts.
Smart Images

Figure CN116658569B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a bracketed liquid-sealed vibration damping device for engine mounts and the like used in motor vehicles. Background Technology
[0002] Conventionally, as a type of vibration damping device for vehicle engine mounts, there is a known vibration damping device with a bracket in which the main body of the vibration damping device is assembled from the side onto a bracket. The main body of this vibration damping device is formed as a structure consisting of a first mounting member and a second mounting member that are separated vertically and elastically connected by a main body rubber elastomer. Furthermore, a pair of connecting grooves are formed on the opposing inner surfaces of the two legs of the bracket. Moreover, the main body of the vibration damping device is assembled from the side onto the bracket by inserting and fitting the pair of connecting grooves on both sides of the second mounting member provided on the main body of the vibration damping device into the pair of connecting grooves supported by the bracket.
[0003] Incidentally, in such a vibration damping device with a bracket, there is a mechanism to prevent the main body of the vibration damping device, which is assembled on the side of the bracket, from detaching from the bracket in the opposite direction to the assembly direction.
[0004] Therefore, in Japanese Patent No. 5083405 (Patent Document 1) and Japanese Patent No. 6808554 (Patent Document 2), the following mechanism was proposed: a second mounting member made of synthetic resin is used to form a locking protrusion, and the locking protrusion is engaged with the locking bearing part provided on the bracket by utilizing the snap-fit action of the elastic deformation of the synthetic resin material, thereby preventing the vibration damping device from falling off the bracket.
[0005] However, in the mechanisms described in Patent Documents 1 and 2, when the main body of the vibration damping device is assembled to the bracket from the side, the locking protrusions of the second mounting member made of synthetic resin need to be elastically deformed to engage with the locking bearing part, and damage during deformation can easily become a problem.
[0006] Furthermore, because the second mounting component in the main body of the vibration damping device needs to be made of synthetic resin, it is sometimes difficult to achieve the required load-bearing capacity and strength characteristics, and there is also the potential for creep deformation and other deterioration over time to become problems. Especially in engine brackets and other applications with large input loads, the dimensional changes in the connection of the second mounting component caused by the annual deterioration of the synthetic resin may lead to gaps between the connection and the connecting groove of the bracket, resulting in abnormal noise caused by shaking.
[0007] Furthermore, in view of such problems, the applicant proposed in Japanese Patent No. 6644640 (Patent Document 3) a composite structure in which the connecting portion of the vibration damping device body inserted into the connecting groove of the bracket is formed as a composite structure in which the connecting portion body integrally formed on the second mounting member and the force-applying rubber are integrally disposed in an overlapping state. In the connecting portion of this composite structure, when the vibration damping device body is assembled to the bracket from the side, the force-applying rubber actively deforms elastically, thereby reducing or avoiding deformation of the connecting portion body and preventing damage during assembly. In addition, the second mounting member having the connecting portion body can also be formed of metal, thereby advantageously ensuring the load-bearing performance and strength characteristics of the second mounting member and the connecting portion body, and also preventing deterioration over time such as creep deformation.
[0008] However, upon further research, the inventors of this invention realized that there was room for further improvement in the vibration damping device with bracket disclosed in Patent Document 3. Specifically, in the vibration damping device with bracket disclosed in Patent Document 3, when the connecting part is inserted into the connecting groove, the force-applying rubber on the upper and lower sides of the connecting part is compressed and deformed, passing over the locking protrusions on the other upper and lower sides, thereby preventing the connecting part from dislodging from the connecting groove for assembly. Therefore, when the connecting part is inserted into the connecting groove with a relatively large force applied by the force-applying rubber, it is difficult to perform the operation of assembling the connecting part by passing over the locking protrusions.
[0009] In particular, in vibration damping devices such as engine mounts, liquid-sealed vibration damping devices utilizing liquid flow are preferred. These devices have a liquid chamber sealed by a sealing member, which clamps a sealing member and overlaps and locks onto a second mounting member from below. Therefore, when the connecting part is inserted into the connecting groove, the second mounting member, including the connecting part, tilts as the locking protrusion passes over it. This can easily cause the sealing member to partially interfere with the bracket, posing a risk of localized and temporary damage to the liquid tightness of the sealing member. There is also a concern about the risk of leakage when assembling the main body of the vibration damping device onto the bracket.
[0010] Existing technical documents
[0011] Patent documents
[0012] Patent Document 1: Japanese Patent No. 5083405
[0013] Patent Document 2: Japanese Patent No. 6808554
[0014] Patent Document 3: Japanese Patent No. 6644640 Summary of the Invention
[0015] The problem that the invention aims to solve
[0016] The present invention was made against the background described above, and its solution is to provide a novel liquid-sealed vibration damping device with a bracket. Compared with the devices described in Patent Documents 1 and 2, the liquid-sealed vibration damping device with a bracket has a new disengagement prevention mechanism to prevent damage to the connection part, etc., when the main body of the vibration damping device is assembled to the bracket from the side. It can also improve the load-bearing characteristics and suppress the deterioration over time. Moreover, compared with the device described in Patent Document 3, it does not require passing over the locking protrusion provided in the connection groove, thereby suppressing the tilting of the connection part and making it easy to insert into the connection groove. It can also prevent leakage when the main body of the vibration damping device is assembled to the bracket.
[0017] means for solving problems
[0018] Hereinafter, embodiments of the present invention, completed to solve such problems, are described. Furthermore, the constituent elements employed in the embodiments described below can be used in as many arbitrary combinations as possible.
[0019] The first aspect of the present invention is as follows.
[0020] A liquid-sealed vibration damping device with a bracket, comprising a main body of the device formed by elastically connecting a first mounting member and a second mounting member that are separate at the top and bottom by a main body rubber elastomer, and a liquid chamber sealed by a sealing member. The sealing member, sandwiching a sealing member, overlaps and locks with the second mounting member from below. The main body of the vibration damping device is assembled from the side onto the bracket by inserting a pair of connecting portions provided on both sides of the second mounting member into a pair of connecting grooves provided on the opposing inner surfaces of the legs on both sides of the bracket.
[0021] The pair of connecting portions of the second mounting member and the pair of connecting grooves of the bracket are both made of metal.
[0022] Each connecting part has an upper force-applying rubber on its upper surface and exposed metal on its lower surface. Utilizing the elastic reaction force of the upper force-applying rubber abutting against the upper surface of the connecting groove, the connecting part is pressed against the lower surface of the connecting groove through metal contact. On the other hand…
[0023] Each connecting part has a locking protrusion on its lower surface, located at the inner end in the insertion direction of the connecting groove and protruding downwards. Furthermore, each connecting groove has a locking recess on its lower surface, at a position corresponding to the locking protrusion.
[0024] By inserting the connector into the connector groove, the engaging protrusion of the connector, which moves inward toward the insertion direction on the lower surface of the connector groove, enters and engages with the engaging recess of the connector groove, thereby forming an anti-disengagement engaging part that prevents the connector inserted into the connector groove from disengaging by means of metal contact.
[0025] In this type of bracket-mounted liquid-sealed vibration damping device, by making the second mounting member, including the connecting part, metal, damage to the second mounting member, including the connecting part, can be prevented during the assembly of the vibration damping device body to the bracket. Furthermore, it avoids problems such as shaking and strength reduction caused by creep deformation and other deterioration over time in resin-made components. Moreover, in the downward direction (bounce direction) where the input load to the vibration damping device tends to be larger, the connecting part and the connecting groove abut against each other through metal contact, thus easily exhibiting excellent load-bearing capacity and positioning performance. Furthermore, even in the direction where the vibration damping device detaches from the bracket, since the connecting part and the connecting groove abut against each other through metal contact in the anti-detachment engagement part, highly reliable detachment resistance can be obtained.
[0026] Furthermore, since the anti-detachment engagement part is located at the inner end of the connecting part, it consists of an engagement protrusion and an engagement recess in the connecting groove. Therefore, when the connecting part is inserted and assembled into the connecting groove, the engagement protrusion protruding downwards from the connecting part slides into the engagement recess on the lower surface of the groove and engages. Thus, there is no need to provide a locking protrusion in the connecting groove, nor is it necessary to pass over this locking protrusion when inserting and assembling the connecting part into the connecting groove. Therefore, the difficulty in assembling the connecting part and the significant tilting of the connecting part caused by passing over the locking protrusion can be avoided, and the connecting part can be easily inserted into the connecting groove. In addition, it also prevents a temporary decrease in sealing performance caused by the second mounting member tilting significantly when passing over the locking protrusion, which could lead to localized interference between the sealing member and the bracket, thereby preventing leakage when assembling the main body of the vibration damping device onto the bracket.
[0027] The second aspect of the present invention is as follows.
[0028] According to the first method, the liquid-sealed vibration damping device with bracket, wherein...
[0029] The bracket is provided with a lower support portion, which abuts against the sealing member of the main body of the vibration damping device from below. The sealing member is supported by the second mounting member supported by the connecting groove of the bracket and the sealing member.
[0030] In this type of bracket-mounted liquid-sealed vibration damping device, when the connecting part is inserted into the connecting groove and assembled, the connecting part moves downward along with its engaging protrusion entering and engaging with the engaging recess of the connecting groove. This allows for a stronger clamping of the sealing member between the second mounting member with the connecting part and the sealing member. As a result, in the main body of the vibration damping device, the assembled state with the bracket provides higher liquid chamber sealing performance compared to the state before assembly with the bracket.
[0031] The third aspect of the present invention is as follows.
[0032] According to the first or second method, the liquid-sealed vibration damping device with bracket, wherein...
[0033] Each of the two connecting portions has peripheral force-applying rubber on its outer peripheral surface.
[0034] Each of the outer peripheral force-applying rubbers abuts against the bottom surface of each groove in the pair of connecting grooves.
[0035] In this type of liquid-sealed vibration damping device with a bracket, in the opposite direction of a pair of connecting grooves, a pair of connecting parts can be positioned and supported by pressing the outer peripheral force-applying rubber into the pair of connecting grooves. Therefore, by utilizing the elastic deformation of the outer peripheral force-applying rubber, even in the opposite direction of a pair of connecting grooves, a good balance between the assembly operability and positioning performance of the vibration damping device body relative to the bracket can be achieved.
[0036] The fourth aspect of the present invention is as follows.
[0037] According to any one of the first to third methods, the liquid-sealed vibration damping device with bracket, wherein...
[0038] The left and right sides of the second mounting member have flat lower surfaces, and at the outer peripheral edge of each of the lower surfaces of the left and right sides, a concave surface is formed that extends in a straight line from the rear end in the insertion direction toward the connecting groove toward the front in the front-rear direction.
[0039] The pair of connecting portions are formed by the left and right sides having the concave surfaces, and the concave surfaces are formed as exposed surfaces of the metal that is pressed against the lower surface of the groove of the connecting portion through metal contact.
[0040] On each of the lower surfaces of the left and right sides, the concave surface does not reach the front end, and the engaging protrusion is formed by the portion in front of the concave surface where the concave surface is not formed.
[0041] In this type of bracket-supported liquid-sealed vibration damping device, by forming a pair of connecting portions with concave surfaces on the left and right sides of the second mounting member, an engaging protrusion at the inner end can be formed on the lower surface connected to the lower surface of the second mounting member. Therefore, even when the engaging protrusion is small, it can be easily formed, and its strength can be effectively ensured.
[0042] The fifth aspect of the present invention is as follows.
[0043] According to any one of the first to fourth methods, the liquid-sealed vibration damping device with bracket, wherein...
[0044] A front-end force-applying rubber is provided on the front end face of the second mounting member in the assembly direction of assembling the bracket from the side, and the front-end force-applying rubber abuts against the bracket in the assembly direction.
[0045] In this type of liquid-sealed vibration damping device with bracket, the force of the front-end force-applying rubber acts on the main body of the vibration damping device in the opposite direction to the assembly direction of the bracket assembly. This keeps the connecting part in an abutting engagement state that prevents it from coming out of the connecting groove in the anti-disengagement engagement part, thereby stabilizing the positioning state of the connecting part in the insertion direction relative to the connecting groove and also helping to prevent shaking.
[0046] The sixth aspect of the present invention is as follows.
[0047] According to any one of the first to fifth methods, the liquid-sealed vibration damping device with bracket, wherein...
[0048] On the upper surface of the groove of the connecting groove, at least on the opening portion on the insertion port side for inserting the connecting part, there is a guide cone portion that is inclined such that the groove width increases from the inside side of the insertion direction of the connecting part toward the opening side.
[0049] In this type of liquid-sealed vibration damping device with bracket, the insertion of the connecting part relative to the connecting groove is facilitated by the guide cone part. Even when the force of the upper force-applying rubber provided on the connecting part is set to be large, the workability of inserting the connecting part into the connecting groove can be well maintained, and the workability of assembling the main body of the vibration damping device into the bracket can be well maintained.
[0050] The seventh aspect of the present invention is as follows.
[0051] According to any one of the first to sixth methods, the liquid-sealed vibration damping device with bracket, wherein...
[0052] The bracket has a pair of support legs positioned opposite each other at a predetermined distance.
[0053] The pair of connecting grooves are provided on the opposing inner surfaces of the pair of support legs, and
[0054] Between the pair of supporting legs, on the side opposite to the side where the main body of the vibration damping device is assembled, there is an inner wall.
[0055] The engaging recess provided at the inner end of the pair of connecting grooves is formed in such a way that it extends inward through the inner wall.
[0056] In this type of liquid-sealed vibration damping device with bracket, the shape and structure of the engaging recess can be simplified. In addition, the mold material for forming the engaging recess can be inserted into the forming cavity through the inner wall of the bracket, and the mold structure of the bracket including the engaging recess can be simplified.
[0057] Invention Effects
[0058] According to the present invention, the second mounting member, including the connecting part, can be made of metal. In addition, the connecting part is in metal contact with the bracket in the direction of bounce and in the direction in which the main body of the vibration damping device detaches from the bracket, thereby enabling excellent load-bearing performance and reliability.
[0059] Furthermore, since the anti-detachment engagement portion does not require a locking protrusion or the like in the connecting groove, damage to the locking protrusion or the like can be avoided when inserting and assembling the connecting portion into the connecting groove, and tilting of the connecting portion caused by passing over the locking protrusion or the like can be prevented. Therefore, the operation of inserting and assembling the connecting portion into the connecting groove becomes easier, and temporary reduction in sealing performance caused by partial interference between the sealing member and the bracket due to tilting of the second mounting member where the connecting portion is formed can be avoided, thereby preventing leakage when assembling the main body of the vibration damping device onto the bracket. Attached Figure Description
[0060] Figure 1 This is a perspective view of an engine bracket with a bracket, representing one embodiment of the present invention.
[0061] Figure 2 yes Figure 1 The front view of the engine mount shown.
[0062] Figure 3 yes Figure 1 The image shows a longitudinal sectional view of the engine mount.
[0063] Figure 4 yes Figure 1 The engine mount shown is with Figure 3 A longitudinal sectional view in an orthogonal direction.
[0064] Figure 5 yes Figure 2 VV sectional view.
[0065] Figure 6 yes Figure 2 Sectional view VI-VI.
[0066] Figure 7 yes Figure 2 Sectional view VII-VII.
[0067] Figure 8It means to observe from the inside as Figure 1 The image shows a three-dimensional view of the main body of the vibration damping device for the engine mount.
[0068] Figure 9 yes Figure 8 The front view of the main body of the support structure is shown.
[0069] Figure 10 yes Figure 8 The image shows a bottom view of the main support structure.
[0070] Figure 11 yes Figure 8 The left view of the main body of the support shown.
[0071] Figure 12 yes Figure 9 Sectional view XII-XII in the middle.
[0072] Figure 13 It means Figure 1 The image shows a three-dimensional view of the engine mount bracket.
[0073] Figure 14 yes Figure 13 The front view of the bracket shown.
[0074] Figure 15 yes Figure 14 XV-XV sectional view in the figure.
[0075] Figure 16 It is used for the purpose of... Figure 8 The main body of the bracket shown is assembled from the side. Figure 13 The diagram illustrates the initial state of the bracket shown.
[0076] Figure 17 It is used for the purpose of... Figure 8 The main body of the bracket shown is assembled from the side. Figure 13 The diagram illustrates the intermediate state of the bracket shown.
[0077] Figure 18 It is used for the purpose of... Figure 8 The main body of the bracket shown is assembled from the side. Figure 13 The diagram illustrates the final state of the bracket shown.
[0078] Explanation of reference numerals in the attached figures
[0079] 10: Engine mount;
[0080] 12: Main body of the support frame;
[0081] 14: Bracket;
[0082] 20: First installation component;
[0083] 22: Second mounting component;
[0084] 24: Main body rubber elastomer;
[0085] 26: Install components;
[0086] 28: Recess (main rubber elastomer);
[0087] 30: Sealing components;
[0088] 32: Support bottom (sealing component);
[0089] 34: Flexible membrane;
[0090] 36: Throttling components;
[0091] 38: Sealing rubber (lower surface of the second mounting component);
[0092] 40: Liquid chamber;
[0093] 46: Streamline traffic flow;
[0094] 48: Movable membrane;
[0095] 50: Locking claw;
[0096] 52: Locking clip;
[0097] 53: Locking hole;
[0098] 54: Connecting part (second mounting component);
[0099] 58: Base section;
[0100] 60: Install the legs;
[0101] 62: Top section;
[0102] 66: Assembly space;
[0103] 68: inner wall;
[0104] 70: Insertion hole;
[0105] 72: Connecting groove;
[0106] 74: Concave surface (lower surface);
[0107] 76: Lower surface inside the groove (connecting groove part);
[0108] 78: Upper surface (connecting part);
[0109] 80: Upper surface inside the groove (connecting groove part);
[0110] 82: Rubber with applied force on the upper side;
[0111] 83: Inner wall surface;
[0112] 84a: Lower step surface;
[0113] 84b: Engagement recess;
[0114] 86: Engaging protrusion (connecting part);
[0115] 87: Outer peripheral surface (connecting part);
[0116] 88: Bottom surface inside the groove (connecting groove part);
[0117] 90: Peripheral force-applying rubber;
[0118] 92: Front-end force-applying rubber. Detailed Implementation
[0119] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0120] exist Figures 1-7 As one embodiment of a bracketed liquid-sealed vibration damping device formed according to the structure of the present invention, an engine mount 10 for a motor vehicle is shown. The engine mount 10 is configured to be assembled in a so-called lateral insertion manner by inserting the mount body 12, which serves as the main body of the vibration damping device, laterally into the bracket 14. In the following description, in principle, the vertical direction refers to the direction along the central axis of the mount. Figure 3 The vertical direction within. Furthermore, it is envisioned that the engine mount 10 of this embodiment will... Figure 3 The vertical direction in the diagram is defined as the vertical direction, the left and right direction as the front and rear direction of the vehicle, and the vertical direction on the paper as the left and right direction of the vehicle. It is then assembled between the vehicle body and the power unit. However, the ease of understanding shown in the attached diagram takes precedence. In the following description, [the following will be used as an example]. Figure 3 The left and right directions in the diagram are called the left and right directions of the bracket, and the direction perpendicular to the plane of the paper in the diagram is called the front and back directions of the bracket (or the inward / near-front direction). In addition, in each diagram, each rubber elastomer (force-applying rubber) provided on the bracket body 12 is shown in a way that maintains the shape of the bracket 14 before assembly so as to make it easy to determine whether there is compression in the assembled state.
[0121] More specifically, in addition to Figures 1-7 In addition, such as Figures 8-12 As shown in its single-piece configuration, the support body 12 has a structure in which a first mounting member 20 and a second mounting member 22 are elastically connected by a main body rubber elastomer 24. The support load and vibration of the power unit are input between the first mounting member 20 and the second mounting member 22.
[0122] The first mounting component 20 is a high-rigidity component made of metal or the like, formed as a solid block structure in the shape of a frustum of a cone with its orientation reversed. For example... Figures 1-4 As exemplified, the mounting member 26, which is installed on the power unit, etc., is fixed to the first mounting member 20 by fixing bolts, etc.
[0123] The second mounting component 22 is a high-rigidity component made of metals such as aluminum alloy and steel, and is integrally formed into a roughly thick-walled annular block shape. Especially in this embodiment, it is possible to... Figure 6 As understood, it has a rounded rectangular opening in the center, and the whole is formed into a roughly rectangular, thick-walled, ring-shaped block.
[0124] The main rubber elastomer 24, which elastically connects the first mounting member 20 and the second mounting member 22, is circumferentially formed into a generally elliptical or rounded rectangular shape, and its outer diameter gradually decreases from bottom to top. Furthermore, the first mounting member 20 is fixed to the upper small-diameter portion in a substantially embedded manner, and the second mounting member 22 is fixed to the lower large-diameter outer peripheral portion. Preferably, the main rubber elastomer 24 is formed as an integrally vulcanized molded part comprising the first mounting member 20 and the second mounting member 22.
[0125] The main rubber elastomer 24 has a reverse recess 28 with an opening at the center of its lower surface, which opens downward through a through-hole in the second mounting member 22. Additionally, a sealing member 30 is assembled overlappingly from below onto the second mounting member 22.
[0126] The sealing member 30 is formed from a rigid synthetic resin material or the like, and is shaped into a generally thick-walled annular block shape corresponding to the second mounting member 22. Furthermore, the sealing member 30 has a support bottom 32 protruding inward from its lower end, and the cross-sectional shape of the sealing member 30 is generally L-shaped. A flexible membrane 34 and a throttling member 36 are inserted from above into the sealing member 30, and assembled in a receiving state by overlapping the support bottom 32. Moreover, the flexible membrane 34 and the throttling member 36 are clamped and fixedly supported between the second mounting member 22 and the sealing member 30 at their respective outer peripheral portions.
[0127] Furthermore, on the upper side of the sealing member 30, the second mounting member 22 is sealed to the sealing member 30 and the throttling member 36 by clamping a sealing rubber 38 disposed on the lower surface of the second mounting member 22. Additionally, on the lower side of the sealing member 30, the sealing member 30 and the throttling member 36 are sealed by clamping the outer periphery of the flexible membrane 34 between the upper and lower parts.
[0128] Thus, the recess 28 of the main rubber elastomer 24 is covered by the flexible membrane 34 and is liquid-tightly sealed, thereby dividing the liquid chamber 40 into which a predetermined liquid is sealed. Furthermore, this liquid chamber 40 is divided vertically by a generally plate-shaped throttling member 36. Moreover, a pressure chamber is formed on the upper side of the throttling member 36, a portion of which is composed of the main rubber elastomer 24, generating pressure fluctuations with vibration input. Additionally, a variable-volume balancing chamber is formed on the lower side of the throttling member 36, a portion of which is composed of a flexible membrane 34 such as a diaphragm rubber to absorb pressure fluctuations.
[0129] The aforementioned pressure chamber and balance chamber are connected via a throttling passage 46 provided in the throttling member 36, which provides a vibration damping effect by utilizing the flow of fluid flowing through the throttling passage 46 when vibration is input. Furthermore, in this embodiment, a receiving region is formed in the central portion of the throttling member 36, communicating with both the pressure chamber and the balance chamber respectively, and a movable diaphragm 48 is housed within this receiving region. Moreover, for example, when vibrations exceeding the tuning frequency of the throttling passage 46 are input, the deformation or displacement of the movable diaphragm 48 reduces or absorbs pressure fluctuations in the pressure chamber, thereby preventing significant high-dynamic springing.
[0130] Furthermore, the specific structure of the liquid chamber 40, the tuning characteristics of the throttling path 46, and the presence or absence of a high-frequency hydraulic absorption mechanism based on the movable diaphragm 48 are not limited, and can be appropriately set according to the required anti-vibration characteristics. In addition, the assembly structure of the sealing member 30 relative to the second mounting member 22 is not limited, but in this embodiment, a locking mechanism based on a resin hook is adopted.
[0131] That is, the locking mechanism consists of locking claws 50 protruding from the outer peripheral surface of the second mounting member 22 and flexible locking pieces 52 extending upward from the outer peripheral surface of the sealing member 30. Locking pieces 52 have vertically extending locking holes 53. By hooking the locking claws 50 into these locking holes 53, the sealing member 30 is assembled and fixed to the second mounting member 22. The locking holes 53 and locking claws 50 of the locking pieces 52 are arranged in pairs at corresponding positions, and multiple pairs are provided in the circumferential direction of the second mounting member 22 and the sealing member 30. In particular, in this embodiment, in the sealing member 30, one locking piece 52 is formed in a plate shape at each of the generally linearly extending portions on both sides in the front-rear direction, and two locking holes 53, 53 are formed separately in the circumferential direction on each locking piece 52. Furthermore, locking claws 50 are formed at positions corresponding to the aforementioned locking holes 53, resulting in a total of four pairs of locking holes 53 and locking claws 50 provided circumferentially.
[0132] Furthermore, by overlapping the upper surface of the sealing member 30 with the lower surface of the second mounting member 22 from below, and bringing them closer together while pressing the sealing rubber 38, the locking claws 50 can be hooked onto the locking holes 53 approximately simultaneously by utilizing the elastic deformation and recovery of each locking piece 52.
[0133] Furthermore, on the second mounting member 22 on which the sealing member 30 is assembled, a pair of connecting portions 54, 54 extending in a straight line in the front-rear direction with a substantially constant thickness are respectively provided on the outer periphery of the left and right sides where the locking claws 50 are not formed. Moreover, in the assembled state where the bracket body 12 is assembled on the bracket 14, the second mounting member 22 is fixedly supported by the bracket 14 using the aforementioned connecting portions 54, 54.
[0134] The bracket 14 is a high-rigidity component made of metals such as aluminum alloy and fiber-reinforced resin, in addition to Figures 1-7 In addition, as well as Figures 13-15 As shown, the base portion 58 consists of two mounting legs 60, 60 that rise upwards from the upper surface of the generally rectangular flat base portion 58, and a top plate portion 62 that integrally connects the upper ends of the two mounting legs 60, 60. Furthermore, the assembly space 66 for assembling the bracket body 12 is formed to open to the side, while the base portion 58, the two mounting legs 60, 60 and the top plate portion 62 surround it.
[0135] Furthermore, on the inner side of the assembly space 66 (the side opposite to the side opening), an inner wall 68 is integrally provided to close the opening of the assembly space 66, and an insertion hole 70 is formed on the upper part of the inner wall 68 for the aforementioned mounting member 26 to be inserted into and assembled into the bracket body 12 (first mounting member 20). In addition, the two sides of the base portion 58 are formed as fixing plate portions extending outward from each mounting leg portion 60, in which the bracket 14 is bolted to the side of the vehicle body.
[0136] The left and right mounting legs 60, 60 are formed as thick-walled plates with a predetermined width in the front-back direction, and are positioned opposite each other on the left and right. In addition, the left and right mounting legs 60, 60 are formed with connecting grooves 72, 72 that open on the opposite inner surfaces and extend in the front and back.
[0137] Furthermore, relative to the pair of connecting slots 72, 72, a pair of connecting portions 54, 54 of the second mounting member 22 provided on the bracket body 12 are inserted from the side, such as Figures 16-18 As shown in the diagram, the bracket body 12 is inserted laterally and assembled onto the bracket 14, as per the assembly process.
[0138] Furthermore, in this assembled state, the lower surface of the bottom wall of the sealing member 30 of the bracket body 12 is supported by overlapping the upper surface of the base portion 58 of the bracket 14 in an abutting state. That is, in this embodiment, the base portion 58 of the bracket 14 constitutes a lower support portion that supports the sealing member 30 from below, and the second mounting member 22 and the sealing member 30 of the bracket body 12 are positioned and held in the axial direction of the bracket by the connecting grooves 72, 72 of the bracket and the base portion 58. In summary, in the stand-alone state of the bracket body 12 before assembly with the bracket 14, the second mounting member 22 and the sealing member 30 are formed in a so-called temporary fixed state by the locking mechanism of the locking claw 50 and the locking piece 52, and are formed in a fixed state in which the second mounting member 22 and the sealing member 30 are firmly positioned in each other by assembly with the bracket 14.
[0139] Here, each pair of connecting portions 54, 54 and connecting groove portions 72, 72 has a special configuration such that when the bracket body 12 is assembled onto the bracket 14, the connecting portions 54, 54 of the second mounting member 22 are positioned and fixedly supported by the connecting groove portions 72, 72 of the bracket 14.
[0140] Specifically, a pair of connecting portions 54, 54 of the second mounting member 22 are provided on the left and right sides of the second mounting member 22, and the middle portion in the front-rear direction extends outward to the periphery by a predetermined length. At least in the outwardly extending portions on the left and right sides, the lower surface of the second mounting member 22 is formed as a flat surface orthogonal to the central axis of the bracket. In particular, in this embodiment, the lower surface of the entire second mounting member 22 is formed as a flat surface.
[0141] Furthermore, on the left and right sides of the second mounting member 22, extending outwards, concave surfaces 74, 74 are formed at each outer peripheral edge, extending linearly in the front-rear direction from the near-front end (rear end) towards the inward (front) direction in the insertion direction toward the connecting grooves 72, 72. The metal second mounting member 22 is exposed on the concave surfaces 74, 74, which are the lower surfaces of the pair of connecting parts 54, 54, and together with the corresponding lower surfaces 76, 76 of the connecting grooves 72, 72, extends linearly in the front-rear direction with a substantially horizontal and flat metal surface and a substantially constant width.
[0142] Furthermore, while the upper surfaces 78, 78 of the pair of connecting portions 54, 54 and the inner upper surfaces 80, 80 of the pair of connecting groove portions 72, 72 can be formed as flat surfaces extending approximately horizontally in the front-rear direction, in this embodiment, the upper surfaces 78, 78 of the pair of connecting portions 54, 54 and the inner upper surfaces 80, 80 of the pair of connecting groove portions 72, 72 are each formed as inclined surfaces that gradually slope upwards from the inside (front) towards the near-front (rear). This improves the workability of inserting the connecting portions 54, 54 into the connecting groove portions 72, 72 and enhances the efficiency of the compression of the upper-applying rubbers 82, 82 described below. In particular, in this embodiment, the inclination angle of the inner upper surfaces 80, 80 of the pair of connecting groove portions 72, 72 is further increased near the near-front (rear) end, further facilitating the insertion of the connecting portions 54, 54.
[0143] from Figure 7 It can be understood that the thickness of the pair of connecting parts 54, 54 in the vertical direction, in the normal assembly state of the bracket body 12 relative to the bracket 14, is slightly smaller than the vertical dimension (groove width) of the pair of connecting grooves 72, 72. In addition, upper force-applying rubber 82, 82 are respectively provided on the upper surfaces 78, 78 of the pair of connecting parts 54, 54.
[0144] The thickness of the upper force-applying rubber 82 (the protrusion height from the connecting portion 54 upwards) is generally constant, and is larger than the difference between the upper and lower thickness of the connecting portion 54 and the upper and lower dimensions of the connecting groove 72. Therefore, by inserting a pair of connecting portions 54, 54 into a pair of connecting grooves 72, 72 and assembling them on the bracket 14, the second mounting member 22, compressed by the upper force-applying rubber 82, 82, which is abutted against the upper surfaces 80, 80 of the connecting grooves 72, 72, presses the lower surfaces (concave surfaces) 74, 74 of the pair of connecting portions 54, 54 against the lower surfaces 76, 76 of the connecting grooves 72, 72 in a metal-to-metal contact manner, thus positioning them.
[0145] Furthermore, in the connecting grooves 72, 72 in the bracket 14, the lower surfaces 76, 76 inside the grooves are respectively located at the inner wall surface 83 (refer to the inner end of the connecting groove 72). Figure 16In embodiment (d), a lower stepped surface 84a is provided slightly closer to the front. Furthermore, an engaging recess 84b is formed further inward than the lower stepped surface 84a, extending beyond the inner wall surface 83. Particularly in this embodiment, the engaging recess 84b is formed as a demolding hole that extends substantially linearly toward the inward direction of the bracket 14 and penetrates the inner wall 68 of the bracket 14. That is, by using a dividing mold inserted into the forming cavity of the bracket 14 through this demolding hole, the engaging recess 84b having the lower stepped surface 84a can be molded simultaneously with the formation of the bracket 14.
[0146] On the other hand, at the inner ends of the connecting portions 54, 54 in the second mounting member 22, the concave surfaces 74, 74 do not reach the inner ends of the connecting portions 54, 54, thus integrally forming a locking protrusion 86 protruding downward from the concave surfaces 74, 74. Moreover, when the second mounting member 22 is assembled on the bracket 14, the pair of locking protrusions 86, 86 respectively enter the pair of locking recesses 84b, 84b, and the near-front side of each locking protrusion 86 abuts against the lower stepped surface 84a through metal contact to form a locking state, thereby constituting an anti-disengagement locking portion. That is, through the metal-contact locking action between the metal surfaces of the locking protrusions 86, 86 and the locking recesses 84b, 84b, the pair of connecting portions 54, 54 of the second mounting member 22 is held in an inserted state relative to the pair of connecting grooves 72, 72 of the bracket 14, thereby preventing disengagement. Furthermore, the engaging protrusions 86 and 86, which move downward toward the engaging recesses 84b and 84b, act on the connecting portions 54 and 54 by the rebound force of the compressed upper force-applying rubbers 82 and 82, thereby suppressing upward movement and maintaining the engaging state of the engaging protrusions 86 and 86 and the engaging recesses 84b and 84b.
[0147] Additionally, the outer peripheral surfaces 87, 87 of the pair of connecting portions 54, 54 extend parallel to each other in the front-back direction with a constant width in the vertical direction, but for example, they can also be arranged from the inside (becoming) Figure 6 (the upper front) towards the near front (becoming) Figure 6 The inclined surface, which protrudes outward from the lower rear side of the connecting groove 72, 72, gradually increases in height, thereby improving the ease of insertion into the connecting groove 72, 72. Furthermore, in this case, it is preferable that the bottom surfaces 88, 88 inside the connecting groove 72, 72 are also formed as corresponding inclined surfaces.
[0148] Furthermore, from Figure 6It can be understood that the left-right separation dimension between the outer peripheral surfaces 87, 87 of the pair of connecting portions 54, 54, i.e., the outer dimension of the second mounting member 22 in the left-right direction at the forming part of the connecting portions 54, 54, is slightly smaller than the distance between the opposing bottom surfaces 88, 88 of the pair of connecting groove portions 72, 72. Furthermore, peripheral force-applying rubber 90, 90 is provided on the outer peripheral surfaces 87, 87 of the pair of connecting portions 54, 54, covering approximately the entire surface. The total thickness of the left and right peripheral force-applying rubber 90, 90 (the protrusion height from the connecting portion 54 to the side) is greater than the difference between the left-right separation dimension between the outer peripheral surfaces 87, 87 of the pair of connecting portions 54, 54 and the distance between the opposing bottom surfaces 88, 88 of the pair of connecting groove portions 72, 72.
[0149] Therefore, when the second mounting member 22 is assembled onto the bracket 14 by inserting a pair of connecting portions 54, 54 into a pair of connecting grooves 72, 72, the outer peripheral force of the outer peripheral force-applying rubbers 90, 90, which are compressed and abut against the bottom surfaces 88, 88 of the grooves of the connecting grooves 72, 72, acts on the outer periphery of the connecting portions 54, 54 on both the left and right sides. Moreover, through the balance of the rebound force of the outer peripheral force-applying rubbers 90, 90, the second mounting member 22 is held and positioned approximately in the center between the left and right mounting legs 60, 60.
[0150] Furthermore, in this embodiment, the front end face of the second mounting member 22 (connecting portions 54, 54) in the assembly direction relative to the bracket 14 is provided with front end force-applying rubber 92, 92 protruding outwards (inwards towards the insertion direction of the connecting groove portions 72, 72). Moreover, as... Figure 7 As shown in the assembled state, the front-end force-applying rubbers 92, 92 abut against and are pressed against the inner wall surfaces 83, 83 formed by the inner wall 68 of the bracket 14. As a result, the rebound force of the front-end force-applying rubbers 92, 92 acts on the connecting portions 54, 54, pressing the rear surfaces of the engaging protrusions 86, 86 against the lower stepped surfaces 84a, 84a of the connecting grooves 72, 72. Thus, the engaging protrusions 86, 86 of the connecting portions 54, 54 and the lower stepped surfaces 84a, 84a of the connecting grooves 72, 72 remain in abutment, thereby preventing wobbling, etc.
[0151] Incidentally, such as Figures 16-18 As shown, the fixed support state in which the second mounting member 22 is fixedly supported on the bracket 14 by assembling a pair of connecting parts 54, 54 into a pair of connecting grooves 72, 72 as described above is achieved by inserting the pair of connecting parts 54, 54 from the front toward the inside into a pair of connecting grooves 72, 72 and pushing them in until the second mounting member 22 reaches a position where it is approximately accommodated in the bracket 14.
[0152] First, such as Figure 16As shown, the bracket body 12 is inserted into the bracket 14 through the opening of the assembly space 66, and the pair of connecting portions 54, 54 of the second mounting member 22 are inserted into the bracket 14 through the opening near the front. At this time, the upper surface 80 inside each connecting portion 72 gradually slopes upward from the inside towards the front, especially near the end of the front portion, where the slope angle further increases (see reference). Figure 7 , Figure 16 (d) etc., thereby preventing the upper force-applying rubbers 82, 82 from hooking, making it easier to insert the connecting parts 54, 54 relative to the connecting grooves 72, 72. In addition, the outer peripheral force-applying rubber 90 and the upper force-applying rubbers 82, 82 are formed into a conical shape that gradually thickens towards the rear side in the insertion direction by reducing the rubber thickness at the front end in the insertion direction, which also makes it easier to insert the connecting parts 54, 54 relative to the connecting grooves 72, 72.
[0153] Furthermore, such as Figure 17 As shown, a pair of connecting parts 54, 54 inserted into a pair of connecting slots 72, 72 of the bracket 14 are pushed inward. However, at this time, at the front end of each connecting part 54, 54 in the insertion direction, the lower surface of the engaging protrusions 86, 86 overlaps with the lower surface 76, 76 inside the slot of the connecting slot 72, 72 through metal contact, and is guided to move inward in a way that slides on the flat lower surface 76, 76 inside the slot.
[0154] Furthermore, preferably, in the connecting portions 54, 54 of the second mounting member 22, the concave surfaces 74, 74 located near the front side of the engaging protrusions 86, 86 in the insertion direction, for example, through an upward pushing force acting on the near-front end of the second mounting member 22 together with the pressing force, thereby... Figure 16 (d) and Figure 17 As shown in (d), the connecting portions 54, 54 are formed to float slightly upward from the lower surfaces 76, 76 inside the grooves of the connecting grooves 72, 72 of the bracket 14, thus keeping the connecting portions 54, 54 in a generally horizontal state. However, since the engaging protrusions 86, 86 of the connecting portions 54, 54 are located at the front end, even if the upward thrust acting on the rear end of the second mounting member 22 (connecting portions 54, 54) is small, the torque force that causes the connecting portions 54, 54 to move upward around the engaging protrusions 86, 86 can be effectively applied, making it easy to keep the connecting portions 54, 54 in a generally horizontal state.
[0155] Especially in this embodiment, the upper surfaces 80, 80 of the grooves of the pair of connecting grooves 72, 72 have an inward downward inclination, and the inclination angle further increases near the rear end of the upper surfaces 80, 80. Therefore, during the insertion of the connecting parts 54, 54 into the connecting grooves 72, 72, the downward pressing force acting on the connecting parts 54, 54 due to the elastic rebound of the upper applied force rubber 82, 82 is larger at the front end, but almost non-existent at the rear end. Therefore, the torque force in the direction of pressing the connecting parts 54, 54 downward around the front end of the engaging protrusions 86, 86 ( Figure 16 (d) and Figure 17 The right-handed torque in (d) is suppressed to a smaller extent.
[0156] Furthermore, in this embodiment, the upper force-applying rubbers 82, 82 of the connecting portions 54, 54 continuously protrude to a position closer to the front end face of the connecting portions 54, 54, and connect with the front force-applying rubber 92 provided on the front end face of the connecting portions 54, 54. Moreover, during the insertion process of the connecting portions 54, 54 into the connecting grooves 72, 72, under the action of the rebound elasticity generated by the portion of the upper force-applying rubber 82, 82 protruding to a position closer to the front end face of the connecting portions 54, 54 abutting against the upper surface 80, 80 inside the groove of the connecting grooves 72, 72, a torque force is generated in the direction of pushing the connecting portions 54, 54 upward around the front end of the engaging protrusions 86, 86. Figure 16 (d) and Figure 17 (d) Left-handed torque force). As a result, through the elastic rebound of the upper-side force-applying rubbers 82, 82 provided on the upper surface of the connecting portions 54, 54, a torque force in the direction of pressing the front end of the engaging protrusions 86, 86 downward toward the connecting portions 54, 54 can be applied. Figure 16 (d) and Figure 17 The right-hand torque in (d) is suppressed less, making it easier to keep the connecting parts 54, 54 in a roughly horizontal state.
[0157] Moreover, such as Figure 18 As shown, when a pair of connecting portions 54, 54 are pushed to the innermost side along a pair of connecting grooves 72, 72 of the bracket 14, the engaging protrusions 86, 86 formed at the front ends of the pair of connecting portions 54, 54 reach the engaging recesses 84b formed in the pair of connecting grooves 72, 72, thereby disengaging the engaging protrusions 86, 86 from the front ends of the lower surfaces 76, 76 inside the grooves and falling into the engaging recesses 84b. The entire second mounting member 22, including the connecting portions 54, 54, falls downward by an amount corresponding to the downward protrusion height of the stepped protrusions 86, 86.
[0158] As a result, as described above, it is possible to achieve... Figures 1-7In the assembled state shown, the lower surfaces (concave surfaces) 74, 74 of the pair of connecting portions 54, 54 are held in a pressed state by contacting the lower surfaces 76, 76 inside the grooves of the pair of connecting groove portions 72, 72 through metal contact, and the rear surfaces of the engaging protrusions 86, 86 of the pair of connecting portions 54, 54 are held in a pressed state by contacting the lower stepped surfaces 84a, 84a of the pair of connecting groove portions 72, 72 through metal contact.
[0159] Moreover, as can be seen from the above description, in this assembled state, the second mounting member 22 is positioned relative to the bracket 14 by metal contact in the vertical direction and also by metal contact in the front-back direction. Therefore, the second mounting member 22 can be positioned and supported relative to the bracket 14 in a manner with high precision and large load-bearing capacity.
[0160] Furthermore, when the second mounting member 22 is assembled to the bracket 14, the engaging protrusions 86, 86 of the pair of connecting parts 54, 54 are guided to slide on the flat lower surfaces 76, 76 of the pair of connecting grooves 72, 72. The second mounting member 22 is assembled by moving approximately parallel to each other. Therefore, during the assembly operation, it is not necessary to move the pair of connecting parts 54, 54 over protrusions, etc., and the difficult operation required to move over protrusions, etc. is not required. In addition, it is possible to avoid the temporary large tilting of the second mounting member 22 relative to the bracket 14 that accompanies the movement of protrusions, etc. Therefore, the second mounting member 22 can be easily assembled to the bracket 14, and for example, when assembling the second mounting member 22 to the bracket 14, it is also possible to avoid local and temporary reduction in the sealing performance between the second mounting member 22 and the sealing member 30, leakage, etc., caused by the overall tilt of the bracket body 12, which causes the sealing member 30 hooked and engaged with the second mounting member 22 to locally and forcefully abut against the base portion 58 of the bracket 14.
[0161] Furthermore, in this embodiment, the lower stepped surface 84a of the connecting groove 72 that forms the anti-detachment engagement portion in the bracket 14 is formed at the inner end of the connecting groove 72 in the insertion direction of the connecting portion 54. Therefore, the length of the engaging recess 84b, which is a demolding hole of the dividing mold inserted through the inner wall 68 of the bracket 14, can be shortened, thereby shortening the length of the dividing mold. This can advantageously ensure the component strength and durability of the dividing mold, and the bracket 14 having the engaging recess 84b including the lower stepped surface 84a can be easily and stably formed.
[0162] The embodiments of the present invention have been described in detail above, but the present invention is not limited to this specific description. For example, the upper force-applying rubber 82, the outer peripheral force-applying rubber 90, and the front force-applying rubber 92 can be integrally formed with the main rubber elastomer 24 or formed separately. In addition, the upper force-applying rubber 82, the outer peripheral force-applying rubber 90, and the front force-applying rubber 92 can be integrally formed with each other or formed separately.
[0163] The specific structure of the bracket shown in the above embodiment is merely an example. As long as it has a connecting groove, the presence or absence of the mounting structure of the vehicle body, the top plate and the bottom plate, and the specific structure can be appropriately changed.
[0164] Furthermore, the assembly method based on the lateral insertion of the support body 12 relative to the bracket 14 is not to be interpreted as limited by the foregoing exemplary description. For example, in... Figure 17 In the insertion process shown in (b), the insertion can also be performed from the near-front side in the insertion direction relative to the gap between the concave surface 74 of the connecting portion 54 and the lower surface 76 inside the groove of the connecting groove portion 72. Figure 17 (b) Insert the spacer member to lift the front part of the connecting part 54 upward, thereby pressing it inward while keeping the connecting part 54 in a roughly horizontal state.
[0165] Furthermore, in the above embodiments, an example of applying the present invention to an engine mount is shown, but the present invention is not limited to engine mounts, and can also be applied to various liquid-sealed vibration damping devices such as vehicle body mounts and cab mounts.
Claims
1. A liquid-sealed vibration damping device with a bracket (14), wherein the main body of the vibration damping device, formed by elastically connecting a first mounting member (20) and a second mounting member (22) separated above and below by a main body rubber elastomer (24), has a liquid chamber (40) sealed by a sealing member (30), the sealing member (30) sandwiching the sealing member overlaps and locks with the second mounting member (22) from below, and the main body of the vibration damping device is assembled to the bracket (14) from the side by inserting a pair of connecting portions (54) provided on both sides of the second mounting member (22) into a pair of connecting grooves (72) provided on the opposing inner surfaces of the legs on both sides of the bracket (14), wherein, The pair of connecting portions (54) of the second mounting member (22) and the pair of connecting groove portions (72) of the bracket (14) are both made of metal. Each of the connecting parts (54) has an upper-side force-applying rubber (82) on its upper surface (78) and metal exposed on its lower surface. Utilizing the elastic reaction force of the upper-side force-applying rubber (82) abutting against the upper surface (80) of the connecting groove (72), the connecting part (54) is pressed against the lower surface (76) of the connecting groove (72) through metal contact. On the other hand, Each of the connecting portions (54) has a locking protrusion (86) on its lower surface, which is located at the inner end of the connecting groove (72) and protrudes downward. Furthermore, each of the connecting grooves (72) has a locking recess (84b) on its lower surface (76) inside the groove, at a position corresponding to the locking protrusion (86). By inserting the connecting part (54) into the connecting groove (72), the engaging protrusion (86) of the connecting part (54), which moves inward toward the insertion direction on the lower surface (76) of the connecting groove (72), enters and engages with the engaging recess (84b) of the connecting groove (72), thereby forming an anti-disengagement engaging part that prevents the connecting part (54) inserted into the connecting groove (72) from disengaging by means of metal contact.
2. The liquid-sealed vibration damping device with bracket (14) according to claim 1, wherein, The bracket (14) is provided with a lower support portion, which abuts against the sealing member (30) of the main body of the vibration damping device from below. The sealing member (30) is supported by the second mounting member (22) supported by the connecting groove (72) of the bracket (14) and the sealing member (30).
3. The liquid-sealed vibration damping device with bracket (14) according to claim 1 or 2, wherein, The pair of connecting portions (54) are respectively provided with peripheral force-applying rubber (90) on their outer peripheral surfaces (87). Each of the outer peripheral force-applying rubbers (90) abuts against the bottom surface (88) of each groove of the pair of connecting grooves (72).
4. The liquid-sealed vibration damping device with bracket (14) according to any one of claims 1 to 3, wherein, The left and right sides of the second mounting member (22) have flat lower surfaces, and on the outer periphery of each of the lower surfaces of the left and right sides, concave surfaces (74) are formed extending in a straight line from the rear end in the insertion direction toward the connecting groove (72) toward the front in the front-rear direction. The pair of connecting portions (54) are formed by the left and right sides having each concave surface (74). The concave surface (74) is formed as an exposed surface of metal that is pressed against the lower surface (76) of the groove of the connecting groove portion (72) through metal contact. On each of the lower surfaces of the left and right sides, the concave surface (74) does not reach the front end, and the engaging protrusion (86) is formed in the part in front of the concave surface (74) where the concave surface (74) is not formed.
5. The liquid-sealed vibration damping device with bracket (14) according to any one of claims 1 to 4, wherein, A front-end force-applying rubber (92) is provided on the front end face of the second mounting member (22) in the assembly direction of assembling the bracket (14) from the side, and the front-end force-applying rubber (92) abuts against the bracket (14) in the assembly direction.
6. The liquid-sealed vibration damping device with bracket (14) according to any one of claims 1 to 5, wherein, On the upper surface (80) inside the groove of the connecting groove (72), at least on the opening portion on the insertion port side for the connecting part (54) to be inserted, there is a guide cone that is inclined in such a way that the groove width increases from the inside side of the insertion direction of the connecting part (54) toward the opening side.
7. The liquid-sealed vibration damping device with bracket (14) according to any one of claims 1 to 6, wherein, The bracket (14) has a pair of support legs that are positioned opposite each other at a predetermined distance. The pair of connecting grooves (72) are provided on the opposing inner surfaces of the pair of support legs, and Between the pair of supporting legs, on the side opposite to the side where the main body of the vibration damping device is assembled, an inner wall (68) is provided. The engaging recess (84b) provided at the inner end of the pair of connecting grooves (72) is formed in such a way that it extends inward through the inner wall (68).
Citation Information
Patent Citations
Vibration damping bushing and manufacturing method thereof
CN102840270A
Fluid sealed vibration control device
JP2013170660A