Hydraulic damper for vehicle

Abstract

In a vehicle hydraulic buffer, the reservoir is securely mounted in any orientation with a simple construction. The cylinder body (10) has: a main flow path (13), integrally formed with the main oil chamber (11), extending in a cross direction (X direction) intersecting the main central axis (C1) of the cylinder body (10), and extending protruding to a connecting surface (12a) provided on the outer peripheral surface of the cylinder body (10); and a plurality of main fixing holes (14) provided around the main flow path (13) on the connecting surface (12a). The reservoir (20) has: a reservoir flow path (23), integrally formed with the reservoir oil chamber (21), directly (or indirectly) communicating with the main flow path (13); and a plurality of reservoir through holes (24) provided around the reservoir flow path (23). In addition, the liquid storage tank (20) uses at least a portion of the plurality of main body fixing holes (14) and at least a portion of the plurality of liquid storage through holes (24) to connect to the cylinder body (10) at any rotation angle with the above-mentioned intersecting directions as the rotation center.

Description

Technical Field

[0001] This invention relates to a hydraulic damper for use in vehicles such as cars, trucks, and motorcycles. Background Technology

[0002] Previously, a hydraulic shock absorber for vehicles was known to be mounted on the cylinder body with a reservoir to a degree of rotatability (see, for example, Patent Document 1).

[0003] In addition, a hydraulic damper of the auxiliary tank (liquid tank) is known to be screwed into the cylinder body through a threaded hole formed in the mounting part of the auxiliary tank, and the locking nut is tightened after adjusting the mounting position of the auxiliary tank to fix the auxiliary tank (for example, see Patent Document 2).

[0004] Patent Document 1: Japanese Patent Application Publication No. 2006-194319

[0005] Patent Document 2: Japanese Utility Model Application Publication No. 04-005538

[0006] However, it is important to securely fix the vehicle's hydraulic damper while the vehicle is in motion. However, if the reservoir is rotatably mounted to the cylinder body as described above, or if the reservoir is fixed by a lock nut, the rotation angle of the reservoir may change due to vibrations during vehicle operation. Furthermore, the structures described above, such as those with the reservoir rotatably mounted to the cylinder body or fixed by a lock nut, are more complex to construct. Summary of the Invention

[0007] The purpose of this invention is to provide a hydraulic shock absorber for vehicles that can be securely installed with a reservoir in any orientation using a simple construction.

[0008] In one embodiment, a vehicle hydraulic damper comprises: a cylinder body having a main oil chamber; and a reservoir having a reservoir oil chamber. The cylinder body further comprises: a main flow path integrally disposed with the main oil chamber, extending along a cross direction intersecting the main central axis of the cylinder body, and extending protruding to a connecting surface disposed on the outer peripheral surface of the cylinder body; and a plurality of main fixing holes disposed around the main flow path on the connecting surface. The reservoir further comprises: a reservoir flow path integrally disposed with the reservoir oil chamber and directly or indirectly communicating with the main flow path; and a plurality of reservoir through holes disposed around the reservoir flow path. The reservoir uses at least a portion of the plurality of main fixing holes and at least a portion of the plurality of reservoir through holes to connect to the cylinder body at any rotation angle with the cross direction as the rotation center.

[0009] According to the above method, the liquid storage tank can be securely installed in any orientation with a simple construction. Attached Figure Description

[0010] Figure 1 This is an exploded perspective view of the hydraulic buffer for a vehicle according to the first embodiment.

[0011] Figure 2 This is an exploded perspective view of a vehicle hydraulic buffer with a changed orientation of the reservoir, as described in the first embodiment.

[0012] Figure 3 This is an exploded perspective view showing the hydraulic buffer for vehicles according to the second embodiment.

[0013] Figure 4A This is an exploded perspective view (1) of a vehicle hydraulic buffer with a changed orientation of the reservoir according to the second embodiment.

[0014] Figure 4B This is an exploded perspective view (2) of a vehicle hydraulic buffer with a changed orientation of the reservoir according to the second embodiment.

[0015] Figure 4C This is an exploded perspective view (3) of a vehicle hydraulic buffer with a changed orientation of the reservoir according to the second embodiment.

[0016] Figure 5 This is an exploded perspective view showing a vehicle hydraulic buffer with a changed orientation of the connecting part according to the second embodiment.

[0017] Figure 6A This is an exploded perspective view (1) of a vehicle hydraulic damper according to the second embodiment, in which the orientation of the vehicle body mounting bracket has been changed.

[0018] Figure 6B This is an exploded perspective view (2) of a vehicle hydraulic damper according to the second embodiment, in which the orientation of the vehicle body mounting bracket has been changed.

[0019] Figure 6C This is an exploded perspective view (3) of a vehicle hydraulic damper with a changed orientation of the vehicle body mounting bracket according to the second embodiment.

[0020] Figure 7 This is an exploded perspective view of a vehicle hydraulic buffer with a different C2 reservoir, as shown in a variation of the second embodiment.

[0021] Explanation of reference numerals in the attached figures

[0022] 1, 2… Hydraulic buffer for vehicle; 10… Cylinder body; 11… Main body oil chamber; 12… Main body connecting part; 12a… Connecting surface; 13… Main body flow path; 14… Main body fixing hole; 20… Reservoir tank; 21… Reservoir oil chamber; 22… Reservoir connecting part; 23… Reservoir flow path; 24… Reservoir through hole; 30… Body mounting bracket; 40… Connecting part; 41… Connecting flow path; 41a… Main body side part; 41b… Reservoir side part; 41c… Middle part; 42… Connecting through hole; 43… Connecting fixing hole; B1… First fixing bolt; B2… Second fixing bolt; B3… Third fixing bolt; B4… Fourth fixing bolt; C1… Main body central shaft; C2… Reservoir central shaft; R… O-ring. Detailed Implementation

[0023] Hereinafter, with reference to the accompanying drawings, the first and second embodiments of the present invention will be described in detail.

[0024] <First Implementation>

[0025] Figure 1 This is an exploded perspective view showing the vehicle hydraulic buffer 1 according to this embodiment. Furthermore, Figure 1 The X, Y, and Z directions shown are mutually orthogonal. These X, Y, and Z directions are an example of a case where the central axis C1 of the cylinder body 10 extending along its length is defined as the Z direction, and the direction in which the main flow path 13 of the cylinder body 10 extends is defined as the X direction.

[0026] like Figure 1 As shown, the vehicle hydraulic buffer 1 includes: a cylinder body 10, a reservoir 20, and a vehicle body mounting bracket 30.

[0027] The cylinder body 10 includes: a main body oil chamber 11 (refer to the dashed arrow), a main body connecting portion 12, a main body flow path 13, and multiple main body fixing holes 14. Furthermore, the cylinder body 10 can adopt any structure. For example, the cylinder body 10 can be a single-cylinder type or a multi-cylinder type.

[0028] The main oil chamber 11 is located inside the cylinder body 10 and is sealed with oil.

[0029] The main body connecting portion 12 is configured to protrude in a cylindrical shape from the outer peripheral surface of the cylinder body 10 towards the negative X direction. A circular connecting surface 12a extending in the YZ plane is provided at the front end of the main body connecting portion 12. The liquid storage tank 20 is connected to this connecting surface 12a. Furthermore, the connecting surface 12a can be considered to be provided on the outer peripheral surface of the cylinder body 10.

[0030] The main flow path 13 is integrally formed with the main oil chamber 11 and extends along the intersecting direction (X direction) that intersects the main central axis C1 of the cylinder body 10. In addition, the main flow path 13 extends and protrudes to the connecting surface 12a provided on the outer peripheral surface of the cylinder body 10.

[0031] Multiple main body fixing holes 14 are provided around the main body flow path 13 on the connecting surface 12a of the main body connecting part 12. Multiple main body fixing holes 14 can be provided at equal intervals (e.g., 30 degrees) in the rotation direction with the main body flow path 13 as the rotation center (e.g., 12).

[0032] The liquid storage tank 20 has: a liquid storage oil chamber 21 (refer to the dashed arrow), a liquid storage connection part 22, a liquid storage flow path 23 (refer to the dashed arrow), and a plurality of liquid storage through holes 24.

[0033] The oil storage chamber 21 is located inside the liquid storage tank 20 and is sealed with oil.

[0034] The liquid storage connection part 22 protrudes from the Z-direction positive end of the liquid storage tank 20 toward the X-direction positive side, has a connection surface (not shown) parallel to the connection surface 12a of the main body connection part 12, and is integrally provided with the liquid storage tank 20.

[0035] The liquid storage flow path 23 is integrally formed with the liquid storage oil chamber 21 and is directly connected to the main flow path 13 of the cylinder body 10 through the interior of the liquid storage connection 22. The liquid storage flow path 23 can extend in the same X direction as the main flow path 13 of the cylinder body 10. In addition, the liquid storage flow path 23 can extend in a direction orthogonal to the liquid storage central axis C2 extending in the length direction of the liquid storage tank 20. Furthermore, an O-ring R is disposed between the main body connection 12 and the liquid storage connection 22 to surround the communication portion between the main flow path 13 and the liquid storage flow path 23.

[0036] Multiple liquid storage through holes 24 are provided around the liquid storage flow path 23. For example, two liquid storage through holes 24 are provided, each for insertion of a first fixing bolt B1. The two first fixing bolts B1 are inserted into two of the multiple (e.g., 12) main body fixing holes 14. Therefore, by selecting, for example, two main body fixing holes 14 from the 12 main body fixing holes 14 for insertion of the two first fixing bolts B1, for example, as... Figure 2 As shown, the liquid storage tank 20 (liquid storage center axis C2) can be connected to the cylinder body 10 at any rotation angle with the X direction as the rotation center.

[0037] Furthermore, the plurality of first fixing bolts B1 only need to be inserted into at least a portion of the plurality of main body fixing holes 14 and at least a portion of the plurality of liquid storage through holes 24. Therefore, it can be said that the liquid storage tank 20 uses at least a portion of the plurality of main body fixing holes 14 and at least a portion of the plurality of liquid storage through holes 24 to connect to the cylinder body 10 at any rotation angle with the X direction as the rotation center.

[0038] The vehicle body mounting bracket 30 is mounted on the vehicle body equipped with the vehicle hydraulic buffer 1. The vehicle body mounting bracket 30 is fixed to the cylinder body 10 by a plurality of fourth fixing bolts B4. Furthermore, the orientation of the reservoir 20 by changing the orientation of the vehicle body mounting bracket 30 will be described in the second embodiment below.

[0039] In the first embodiment described above, the vehicle hydraulic buffer 1 includes: a cylinder body 10 having a main oil chamber 11, and a reservoir 20 having a reservoir oil chamber 21. The cylinder body 10 further includes: a main flow path 13, integrally formed with the main oil chamber 11, extending along a cross direction (X direction) intersecting the main central axis C1 of the cylinder body 10, and protruding to a connecting surface 12a provided on the outer peripheral surface of the cylinder body 10; and a plurality of main fixing holes 14 provided around the main flow path 13 on the connecting surface 12a. The reservoir 20 further includes: a reservoir flow path 23, integrally formed with the reservoir oil chamber 21, and directly (or indirectly) communicating with the main flow path 13; and a plurality of reservoir through holes 24 provided around the reservoir flow path 23. In addition, the reservoir 20 uses at least a portion of the plurality of main fixing holes 14 and at least a portion of the plurality of reservoir through holes 24 to connect to the cylinder body 10 at any rotation angle with the aforementioned cross direction (X direction) as the rotation center.

[0040] Therefore, for example, the reservoir 20 can be securely connected to the cylinder body 10 by bolts (e.g., the plurality of first fixing bolts B1 described later) inserted into at least a portion of the plurality of main body fixing holes 14 and at least a portion of the plurality of liquid storage through holes 24. Furthermore, the reservoir 20 can be securely installed in any orientation with a simple structure using the plurality of main body fixing holes 14 and the plurality of liquid storage through holes 24. Thus, according to this first embodiment, the reservoir 20 can be securely installed in any orientation with a simple structure.

[0041] In addition, in this first embodiment, the main flow path 13 is directly connected to the liquid storage flow path 23, and the liquid storage tank 20 is connected to the cylinder body 10 by a plurality of first fixing bolts B1 inserted into at least a portion of the plurality of main body fixing holes 14 and at least a portion of the plurality of liquid storage through holes 24.

[0042] Thus, the reservoir 20 is directly connected to the cylinder body 10. Therefore, compared to the second embodiment where the cylinder body 10 and the reservoir 20 are connected via the connecting part 40, the reservoir 20 can be securely installed in any orientation with a simpler structure.

[0043] In addition, in this first embodiment, the liquid storage flow path 23 of the liquid storage tank 20 extends in a direction orthogonal to the liquid storage center axis C2 of the liquid storage tank 20.

[0044] Therefore, by simply rotating the liquid storage tank 20 around the cross direction (X direction) that intersects with the aforementioned main body central axis C1, the orientation of the liquid storage tank 20 (liquid storage central axis C2) can be changed to any orientation.

[0045] <Second Implementation>

[0046] Figure 3 This is an exploded perspective view showing the vehicle hydraulic buffer 2 according to this embodiment. Furthermore, the vehicle hydraulic buffer 2 according to this embodiment differs from the vehicle hydraulic buffer 1 described above mainly in that it also includes a connecting portion 40. Therefore, repeated descriptions are appropriately omitted.

[0047] like Figure 3 As shown, the vehicle hydraulic buffer 2 includes: a cylinder body 10, a reservoir 20, a vehicle body mounting bracket 30, and a connecting part 40.

[0048] The connecting part 40 connects the cylinder body 10 to the reservoir 20. The connecting part 40 is, for example, a rounded cubic shape that is longer in the Z direction, and has a recess on at least the negative side in the X direction for lightweighting. In addition, the connecting part 40 can also be referred to as an adapter.

[0049] The connecting part 40 has a connecting flow path 41 inside. The connecting flow path 41 is connected to the main flow path 13 and the liquid storage flow path 23, thereby indirectly connecting the main flow path 13 and the liquid storage flow path 23.

[0050] Specifically, the connecting flow path 41 may include: a main body side portion 41a (refer to the dashed arrow), which is directly connected to the main flow path 13 and extends along the X direction; a liquid storage side portion 41b, which is directly connected to the liquid storage flow path 23 and extends along the X direction parallel to the main body side portion 41a; and an intermediate portion 41c (refer to the dashed arrow), which extends along the Z direction orthogonal to the main body side portion 41a and the liquid storage side portion 41b.

[0051] The connecting portion 40 has a plurality of connecting through holes 42, which are used to fix the connecting portion 40 to the cylinder body 10 through a plurality of (e.g., 12) main body fixing holes 14 at two (at least a partial example) by a plurality of (e.g., two) second fixing bolts B2. In addition, the connecting portion 40 has a plurality of (e.g., two) connecting fixing holes 43, which are used to fix the liquid storage tank 20 to the connecting portion 40 through a plurality of (e.g., two) liquid storage through holes 24 at all (at least a partial example) by a plurality of (e.g., two) third fixing bolts B3.

[0052] Furthermore, an O-ring R is disposed between the main body connecting portion 12 and the connecting portion 40 to surround the communication portion between the main body flow path 13 and the main body side portion 41a. Additionally, an O-ring R is disposed between the liquid storage connecting portion 22 and the connecting portion 40 to surround the communication portion between the liquid storage flow path 23 and the liquid storage side portion 41b.

[0053] Here, assuming that 12 connecting fixing holes 43 or liquid storage through holes 24 are provided similarly to the main fixing hole 14, then by selecting two connecting fixing holes 43 or two liquid storage through holes 24 from the 12 connecting fixing holes 43 or liquid storage through holes 24 for the insertion of two third fixing bolts B3, for example, Figures 4A to 4C (For convenience, only two of each of the connecting fixing hole 43 and the liquid storage through hole 24 are shown in the figure.) As shown, the liquid storage tank 20 (liquid storage center axis C2) can be connected to the connecting part 40 at any rotation angle with the X direction as the rotation center.

[0054] Furthermore, in this second embodiment, the main body fixing holes 14 are provided with, for example, 12 holes. Therefore, by selecting two main body fixing holes 14 from the 12 main body fixing holes 14 for the insertion of two second fixing bolts B2, for example, Figure 5 As shown, the connecting part 40 and even the liquid storage tank 20 (liquid storage center axis C2) can be connected to the cylinder body 10 at any rotation angle with the X direction as the rotation center.

[0055] Furthermore, the plurality of second fixing bolts B2 only need to be inserted into at least a portion of the plurality of main body fixing holes 14 and at least a portion of the plurality of connecting through holes 42. Additionally, the plurality of third fixing bolts B3 only need to be inserted into at least a portion of the plurality of connecting fixing holes 43 and at least a portion of the plurality of liquid storage through holes 24.

[0056] like Figures 6A to 6CAs shown, for example, the positions of the through holes of the vehicle body mounting bracket 30 into which multiple (e.g., eight) fourth fixing bolts B4 are inserted, and the positions of the fixing holes of the cylinder body 10 are adjusted so that the vehicle body mounting bracket 30 is fixed to the cylinder body 10 at any rotation angle (e.g., every 45 degrees) with the main body central axis C1 (Z direction) of the cylinder body 10 as the rotation center. Thus, by adjusting the rotation angle of the vehicle body mounting bracket 30, the rotation angle of the cylinder body 10 and even the reservoir 20 with the Z direction as the rotation center can also be adjusted.

[0057] Figure 7 This is an exploded perspective view of a vehicle hydraulic buffer 2 with the reservoir 20 (reservoir center axis C2) facing different directions, according to a variation of the second embodiment.

[0058] In the above description of the second embodiment, the liquid storage center axis C2 of the liquid storage tank 20 is orthogonal to the liquid storage flow path 23. However, in this modified example, the liquid storage connection portion 22 is provided at an angle of 90 degrees, for example, so that the liquid storage flow path 23 extends parallel to the liquid storage center axis C2. Furthermore, in Figure 7 The diagrams of the liquid storage connection 22, multiple liquid storage through holes 24, and multiple third fixing bolts B3 are omitted.

[0059] In the second embodiment described above, the vehicle hydraulic buffer 2 also includes: a cylinder body 10 having a main oil chamber 11, and a reservoir 20 having a reservoir oil chamber 21. The cylinder body 10 further includes: a main flow path 13, integrally formed with the main oil chamber 11, extending along a cross direction (X direction) intersecting the main central axis C1 of the cylinder body 10, and protruding to a connecting surface 12a provided on the outer peripheral surface of the cylinder body 10; and a plurality of main fixing holes 14, provided around the main flow path 13 on the connecting surface 12a. The reservoir 20 further includes: a reservoir flow path 23, integrally formed with the reservoir oil chamber 21, and indirectly (or directly) communicating with the main flow path 13; and a plurality of reservoir through holes 24, provided around the reservoir flow path 23. In addition, the reservoir 20 uses at least a portion of the plurality of main fixing holes 14 and at least a portion of the plurality of reservoir through holes 24 to connect to the cylinder body 10 at any rotation angle with the aforementioned cross direction (X direction) as the rotation center.

[0060] Therefore, the reservoir 20 can be securely connected to the cylinder body 10 via the connecting portion 40 using bolts (e.g., the plurality of second fixing bolts B2 described later) inserted into at least a portion of the plurality of main body fixing holes 14 and bolts (e.g., the plurality of third fixing bolts B3 described later) inserted into at least a portion of the plurality of liquid storage through holes 24. Furthermore, the reservoir 20 can be securely installed in any orientation with a simple structure using the plurality of main body fixing holes 14 and the plurality of liquid storage through holes 24. Thus, with this second embodiment, the reservoir 20 can also be securely installed in any orientation with a simple structure.

[0061] In addition, in this second embodiment, the vehicle hydraulic buffer 2 also includes a connecting portion 40. This connecting portion 40 has a connecting flow path 41 that communicates with the main flow path 13 and the reservoir flow path 23, thereby indirectly communicating between the main flow path 13 and the reservoir flow path 23, and connects the cylinder body 10 to the reservoir tank 20. Furthermore, the connecting portion 40 also includes: a plurality of connecting through holes 42 for fixing the connecting portion 40 to the cylinder body 10 via a plurality of second fixing bolts B2 in at least a portion of a plurality of main body fixing holes 14; and a plurality of connecting fixing holes 43 for fixing the reservoir tank 20 to the connecting portion 40 via a plurality of third fixing bolts B3 in at least a portion of a plurality of reservoir through holes 24.

[0062] Thus, the reservoir 20 is connected to the cylinder body 10 via the connecting part 40. Therefore, by adjusting the orientation of the connecting part 40, the connection position of the reservoir 20 can be adjusted as follows: Figure 3 Set it to the position shown below, or as shown below. Figure 5 Set it to the upper position as shown to adjust the height and other offsets.

[0063] In addition, in this second embodiment, the connecting flow path 41 includes: a main body side portion 41a, which is directly connected to the main flow path 13; a liquid storage side portion 41b, which is directly connected to the liquid storage flow path 23 and is parallel to the main body side portion 41a; and an intermediate portion 41c, which extends in a direction orthogonal to the main body side portion 41a and the liquid storage side portion 41b.

[0064] Therefore, the connection position of the liquid storage tank 20 can be offset and adjusted using the simple connection part 40 as described above.

[0065] Furthermore, in this second embodiment, the vehicle hydraulic damper 2 also includes a vehicle body mounting bracket 30 for mounting on the vehicle body. The vehicle body mounting bracket 30 is fixed to the cylinder body 10 by a plurality of fourth fixing bolts B4 at any rotation angle with the main body central axis C1 of the cylinder body 10 as the rotation center.

[0066] Therefore, by adjusting the rotation angle of the vehicle mounting bracket 30, the rotation angle of the cylinder body 10 and even the reservoir 20 around the Z-direction can also be adjusted. This increases the flexibility in configuring the reservoir 20.

[0067] Furthermore, in the variations of this second embodiment (see reference) Figure 7 In the liquid storage tank 20, the liquid storage flow path 23 extends in the same direction as the liquid storage center axis C2 of the liquid storage tank 20.

[0068] This increases the flexibility in configuring the liquid storage tank 20.

Claims

1. A hydraulic buffer for a vehicle, characterized in that, have: Cylinder body; has main oil chamber; and The liquid storage tank has an oil storage chamber. The cylinder body further comprises: a main flow path integrally formed with the main oil chamber, extending along a direction intersecting the main central axis of the cylinder body, and protruding to a connecting surface disposed on the outer peripheral surface of the cylinder body; and a plurality of main fixing holes disposed around the main flow path on the connecting surface. The liquid storage tank also includes: a liquid storage flow path, integrally formed with the liquid storage oil chamber and directly or indirectly connected to the main flow path; and multiple liquid storage through holes disposed around the liquid storage flow path. The liquid storage tank is connected to the cylinder body by at least a portion of the plurality of main body fixing holes and at least a portion of the plurality of liquid storage through holes, with the intersecting direction as the rotation center at any rotation angle.

2. The hydraulic buffer for vehicles according to claim 1, characterized in that, The main flow path is directly connected to the liquid storage flow path. The liquid storage tank is connected to the cylinder body by a plurality of first fixing bolts inserted into at least a portion of the plurality of main body fixing holes and at least a portion of the plurality of liquid storage through holes.

3. The hydraulic buffer for vehicles according to claim 1, characterized in that, The hydraulic buffer also includes a connecting part, which has a connecting flow path that indirectly connects the main flow path and the reservoir flow path by communicating with the main flow path and the reservoir flow path, and connects the cylinder body to the reservoir tank. The connecting part further includes: a plurality of connecting through holes for fixing the connecting part to the cylinder body by a plurality of second fixing bolts for at least a portion of the plurality of main body fixing holes; and a plurality of connecting fixing holes for fixing the liquid storage tank to the connecting part by a plurality of third fixing bolts for at least a portion of the plurality of liquid storage through holes.

4. The hydraulic buffer for vehicles according to claim 3, characterized in that, The connecting flow path includes: a main body side portion, which is directly connected to the main flow path; a liquid storage side portion, which is directly connected to the liquid storage flow path and is parallel to the main body side portion; and a middle portion, which extends in a direction orthogonal to the main body side portion and the liquid storage side portion.

5. The hydraulic buffer for vehicles according to any one of claims 1 to 4, characterized in that, The vehicle hydraulic damper also has a body mounting bracket for installation on the vehicle body. The vehicle body mounting bracket is fixed to the cylinder body by a plurality of fourth fixing bolts at any rotation angle with the main body central axis as the rotation center.

6. The hydraulic buffer for vehicles according to any one of claims 1 to 4, characterized in that, The liquid flow path of the liquid storage tank extends in a direction orthogonal to the central axis of the liquid storage tank.

7. The hydraulic buffer for vehicles according to any one of claims 1 to 4, characterized in that, The liquid flow path of the liquid storage tank extends in the same direction as the central axis of the liquid storage tank.

Images