tool assembly
By designing a non-circular structure for the outer and inner sleeves, the problem of difficulty in tightening the shock absorber nuts in the suspension system was solved, enabling proper tightening of the nuts below the top bracket and fixing of the piston rod, thus ensuring the accuracy of the nut tightening torque.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TEINKK
- Filing Date
- 2025-08-19
- Publication Date
- 2026-08-04
AI Technical Summary
In the suspension system, when the shock absorber nut is located below the mounting surface of the top bracket towards the vehicle body, it is difficult to tighten the nut to the specified torque using ordinary or special tools, and the piston rod is prone to rotating with the nut.
A tool assembly is designed, including an outer sleeve and an inner sleeve. The outer sleeve has a non-circular hole at one end that engages with a nut, and a non-circular part for fastening at the other end. The inner sleeve has a non-circular hole at one end that engages with a shock absorber, and a non-circular hole for fixing at the other end. By using a specific tool to engage with these non-circular structures, the piston rod is prevented from rotating.
This allows for proper tightening of the nut even when it is located below the top bracket, preventing the piston rod from rotating with the nut and ensuring that the tightening torque meets the requirements.
Smart Images
Figure CN224587935U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a tool assembly for mounting a shock absorber to a top bracket by tightening a nut. Background Technology
[0002] In the past, in suspension systems, shock absorbers were mounted to a top bracket by tightening nuts (see, for example, Patent Document 1).
[0003] Alternatively, there is a suspension device in which the nut for mounting the shock absorber to the top bracket is positioned below (inside) the mounting surface of the top bracket toward the vehicle body (for example, see Patent Document 2).
[0004] Patent Document 1: Japanese Patent Application Publication No. 2010-255680
[0005] Patent Document 2: Japanese Patent Application Publication No. 2005-114206
[0006] However, when the nuts used to mount the shock absorbers to the top bracket are positioned below the mounting surface of the top bracket facing the vehicle body, it is difficult to tighten the nuts to the specified torque using ordinary tools. Furthermore, even when using a special flared nut socket, although it is possible to tighten, the piston rod rotates along with the nut as it is tightened, making it difficult to tighten the nut to the specified torque. Utility Model Content
[0007] The purpose of this invention is to provide a tool assembly that can properly tighten the nut even when the nut for mounting the shock absorber to the top bracket is located below the mounting surface of the top bracket facing the vehicle body.
[0008] In one embodiment, the tool assembly is for mounting a shock absorber to a top bracket by tightening a nut, comprising: an outer sleeve having a non-circular hole on the inner circumferential surface of one end for engaging with the nut, and a non-circular portion for fastening on the outer circumferential surface of the other end; and an inner sleeve inserted into the outer sleeve having a non-circular hole on the inner circumferential surface of one end for engaging with the shock absorber, and a non-circular hole for fixing on the inner circumferential surface of the other end.
[0009] According to the above method, even if the nut used to mount the shock absorber to the top bracket is located below the mounting surface of the top bracket facing the vehicle body, the nut can be tightened properly. Attached Figure Description
[0010] Figure 1 This refers to the outer sleeve in one embodiment. Figure 1 (a) is the front view. Figure 1 (b) is a sectional view. Figure 1(c) is a top view, and Figure 1 (d) is the bottom view.
[0011] Figure 2 This refers to the inner sleeve in one embodiment. Figure 2 (a) is the front view. Figure 2 (b) is a sectional view. Figure 2 (c) is a top view, and Figure 2 (d) is the bottom view.
[0012] Figure 3A This is a cross-sectional view (1) used to illustrate the tightening of a nut in one embodiment.
[0013] Figure 3B This is a cross-sectional view (2) used to illustrate the tightening of the nut in one embodiment.
[0014] Figure 3C It is a cross-sectional view (3) used to illustrate the tightening of the nut in one embodiment.
[0015] Figure 3D This is a perspective view showing the interior of the top bracket to illustrate the tightening of the nut in one embodiment.
[0016] Figure 4 This is a side view showing the interior of the top bracket and the overall structure of the shock absorber, used to illustrate the tightening of the nut in one embodiment.
[0017] Figure 5 This refers to the outer sleeve in a modified embodiment of one implementation. Figure 5 (a) is the front view. Figure 5 (b) is a sectional view. Figure 5 (c) is a top view, and Figure 5 (d) is the bottom view.
[0018] Figure 6 This refers to the inner sleeve in a variation of one implementation method. Figure 6 (a) is the front view. Figure 6 (b) is a sectional view. Figure 6 (c) is a top view, and Figure 6 (d) is the bottom view.
[0019] Figure 7A This is a cross-sectional view (1) used to illustrate the tightening of a nut in a modified embodiment.
[0020] Figure 7B This is a cross-sectional view (2) used to illustrate the tightening of a nut in a modified embodiment.
[0021] Figure 7CThis is a perspective view showing the interior of the top bracket, illustrating the tightening of the nut in a variation of one embodiment.
[0022] Explanation of reference numerals in the attached figures
[0023] 11, 21… Outer sleeve; 11a, 21a… Hexagonal hole (non-circular hole); 11b, 21b… Hexagonal section (non-circular section); 11c, 21c… Opening; 12, 22… Inner sleeve; 12a, 22a… Oval hole (non-circular hole); 12b, 22b… Square hole (non-circular hole); 13, 23… Extension rod; 13a, 23a… Square section (non-circular section); 13b, 23b… Square recess; 100…Shock absorber; 110…Piston rod; 111…External thread; 112…Milled surface; 120…Damping force adjustment dial; 130…Nut; 140…Washer; 150…Housing; 160…Dust cover; 170…Mounting bracket; 200…Top bracket; 201…Flange; 201a…Mounting hole; A…Adapter; B1, B2…Rubber bushings; T1…First tool; T2…Second tool; T3…Third tool. Detailed Implementation
[0024] Hereinafter, the tool components involved in one embodiment of the present invention will be described with reference to the accompanying drawings.
[0025] Figure 1 This refers to the outer sleeve 11 in this embodiment. Figure 1 (a) is the front view. Figure 1 (b) is a sectional view. Figure 1 (c) is a top view, and Figure 1 (d) is the bottom view.
[0026] Figure 2 This refers to the inner sleeve 12 in this embodiment. Figure 2 (a) is the front view. Figure 2 (b) is a sectional view. Figure 2 (c) is a top view, and Figure 2 (d) is the bottom view.
[0027] The tool assembly according to this embodiment includes an outer sleeve 11 and an inner sleeve 12. Furthermore, this tool assembly is used for passing through a nut 130 (see reference 12). Figures 3A-3C Tighten the screws to secure the shock absorber 100 (refer to...). Figure 4 Installed on the top bracket 200.
[0028] Figure 1 The outer sleeve 11 shown is cylindrical in shape. For example... Figure 1As shown in (d), the outer sleeve 11 has a hexagonal hole 11a on the inner circumferential surface of the lower end side (one end side) that engages with the nut 130. This hexagonal hole 11a is an example of a non-circular hole.
[0029] like Figure 1 (a) and Figure 1 As shown in (c), the outer sleeve 11 has a hexagonal portion 11b for fastening on its outer peripheral surface at the upper end (the other end). This hexagonal portion 11b is used for fastening via... (described later) Figure 3D The first tool T1 and the third tool T3 shown secure the nut 130 via the outer sleeve 11. The hexagonal portion 11b is an example of a non-circular portion. Furthermore, the nut 130 is screwed into the external thread 111 provided on the outer peripheral surface of the upper end of the piston rod 110.
[0030] like Figure 1 (a) and Figure 1 As shown in (b), the outer sleeve 11 has an inner sleeve 12 on its side that is visually identifiable as to be inserted therein (see Figure 12). Figure 3D The opening 11c of the outer sleeve 11. For example, the opening 11c is set as a rectangle with a longitudinal length longer than the left and right length at four locations on the front, back, left and right sides of the outer peripheral surface of the outer sleeve 11.
[0031] Figure 2 The inner sleeve 12 shown is cylindrical in shape, such as Figure 3C As shown, the inner sleeve 12 is inserted into the outer sleeve 11 as a whole. The inner sleeve 12 is inserted into the outer sleeve 11 through a clearance fit in a manner that allows it to rotate relative to the outer sleeve 11 without tilting inside the outer sleeve 11.
[0032] like Figure 2 (b) and Figure 2 As shown in (d), the inner sleeve 12 has an elliptical hole (flat round hole) 12a on its inner circumferential surface at the lower end (one end side) that engages with the piston rod 110 (an example of the shock absorber 100). Figure 3C As shown, the elliptical hole 12a engages with the piston rod 110 on the milled surface 112. The milled surface 112 is, for example, composed of two parallel surfaces. The elliptical hole 12a is an example of a non-circular hole.
[0033] like Figure 2 As shown in (c), the inner sleeve 12 has a square hole 12b for fixing on its inner circumferential surface on the upper end side (the other end side). This square hole 12b is connected to the square portion 13a at the lower end of the extension rod 13 (see reference 12b). Figure 3C Engagement, used for... Figure 3D The second tool T2 shown is used for fixing. Square hole 12b is an example of a non-circular hole.
[0034] As mentioned above, Figure 3CThe extension rod 13 shown has a square portion 13a on its lower end (one end) outer circumferential surface that engages with the elliptical hole 12a of the inner sleeve 12. This square portion 13a is an example of a non-circular portion.
[0035] Additionally, the extension rod 13 extends and protrudes from the upper end (other end) of the outer sleeve 11 on the upper end side (other end side). A square recess 13b is provided on the upper surface of the extension rod 13.
[0036] Furthermore, the extension rod 13 is used to fix the inner sleeve 12 (piston rod 110) by means of the second tool T2, so that the inner sleeve 12 (piston rod 110) does not rotate with the nut 130. Therefore, the extension rod 13 can be regarded as part of the tool assembly.
[0037] like Figure 3A As shown, the extension rod 13 can also be used to remove the damping force adjustment dial 120, which is fixed to the upper end of the piston rod 110. Figure 3A In this example, the lower end of the extension rod 13 is a square portion 13a. Therefore, in order to clamp the hexagonal portion of the outer peripheral surface of the damping force adjustment dial 120, an adapter A is clamped between the extension rod 13 and the damping force adjustment dial 120. The adapter A has a hexagonal recess on its lower surface and a square recess on its upper surface.
[0038] like Figure 4 As shown, in addition to the piston rod 110, damping force adjustment dial 120, and nut 130 mentioned above, the shock absorber 100 also includes rubber bushings B1 and B2, washers 140, housing 150, dust cover 160, and mounting bracket 170.
[0039] like Figure 3A As shown, a pair of upper and lower rubber bushings B1 and B2 are configured on the mounting part of the shock absorber 100 mounted on the top bracket 200.
[0040] Washer 140 is clamped between rubber bushing B2 and nut 130 on the upper part of rubber bushing B2.
[0041] Figure 4 The housing 150 shown internally holds a cylinder (not shown) for the reciprocating movement of the piston rod 110.
[0042] The dust cover 160 is an elastic cover used to prevent dust and other foreign objects from entering the movable part of the shock absorber 100.
[0043] Mounting bracket 170 is located at the lower end of housing 150.
[0044] like Figure 3AAs shown, the top bracket 200 is a cup shape (a bottomed cylindrical shape) that is concave downwards, and a flange 201 is provided on the upper part. Multiple mounting holes 201a for mounting to the vehicle body are provided on this flange 201. Therefore, the upper surface of the flange 201 functions as a mounting surface to the vehicle body.
[0045] Next, refer to Figures 3A to 3D The tightening of nut 130 will be explained. Furthermore, any points that overlap with the above explanation will be omitted where appropriate.
[0046] First, such as Figure 3A As shown, the damping force adjustment dial 120 is disassembled using the extension rod 13 and adapter A. For example, the damping force adjustment dial 120 is disassembled when the outer diameter of the damping force adjustment dial 120 is larger than the diameter of the external thread portion 111 of the piston rod 110, and the damping force adjustment dial 120 obstructs the insertion of the inner sleeve 12 (elliptical hole 12a) when it is engaged with the milled surface 112.
[0047] Next, as Figure 3B As shown, the outer sleeve 11 is inserted from above the top bracket 200 in such a way that the hexagonal hole 11a on the lower end engages with the nut 130.
[0048] Next, as Figure 3C As shown, the inner sleeve 12 is inserted into the interior of the outer sleeve 11. Thus, the inner sleeve 12 engages with the milled surface 112 of the piston rod 110 at the elliptical hole 12a at its lower end. Furthermore, with the square portion 13a of the extension rod 13 engaged at the aforementioned square hole 12b, the extension rod 13 is connected to the inner sleeve 12.
[0049] Next, as Figure 3D As shown, with the protrusion of the second tool T2, such as the pawl handle, inserted into the square recess 13b on the upper surface of the extension rod 13, the inner sleeve 12 and the piston rod 110 are fixed (and kept non-rotating) by the second tool T2 via the extension rod 13.
[0050] Next, the hexagonal portion 11b on the upper side of the outer sleeve 11 is held in place by a third tool T3 such as a wrench (see reference). Figure 1 (a) and Figure 1 (c) and insert the protrusion of the first tool T1, such as a torque wrench, into the third tool T3. Then, the nut 130 is tightened by the first tool T1 via the third tool T3 and the outer sleeve 11. At this time, as described above, the piston rod 110 is kept non-rotating, so the piston rod 110 does not rotate with the tightening of the nut 130.
[0051] Figure 5 This refers to the outer sleeve 21 in a modified example of this embodiment. Figure 5(a) is the front view. Figure 5 (b) is a sectional view. Figure 5 (c) is a top view, and Figure 5 (d) is the bottom view.
[0052] Figure 6 This refers to the inner sleeve 22 in a modified example of this embodiment. Figure 6 (a) is the front view. Figure 6 (b) is a sectional view. Figure 6 (c) is a top view, and Figure 6 (d) is the bottom view.
[0053] In the above description, the nut 130 (the external thread 111 of the piston rod 110) is M10 (a 10mm metric thread). In contrast, in this modified example, the nut 130 is M12. In this modified example, the structure differs from the above description only in terms of this dimensional difference. Therefore, only the differences will be described. Furthermore, examples of the nut 130 being M10 or M12 have been given, but the size of the nut 130 is arbitrary; the nut 130 can also be other sizes such as M14. Moreover, the outer sleeves 11 and 21, and the inner sleeves 12 and 22 can adopt structures that match the size of the nut 130.
[0054] Figure 5 The outer sleeve 21 shown is Figure 1 The outer sleeve 11 shown also has a hexagonal hole 21a, a hexagonal portion 21b, and an opening 21c. In this modified example, the nut 130 has a larger diameter, therefore the hexagonal hole 21a that engages with the nut 130 is larger than the diameter of the hexagonal hole 11a (see reference). Figure 7A ).
[0055] Figure 6 The inner sleeve 22 shown is Figure 2 The inner sleeve 12 shown also has an elliptical hole 22a and a square hole 22b. However, the inner sleeve 22 is longer in the vertical direction than the inner sleeve 12. This is because, in this modified example, the damping force adjustment dial 120 is not disassembled, so above the damping force adjustment dial 120, the square hole 22b of the inner sleeve 22 and the extension rod 23 (see reference) Figure 7B The square portion 23a engages.
[0056] Figure 7B The extension rod 23 shown is Figure 3C The extension rod 13 shown also has a square portion 23a and a square recess 23b.
[0057] Next, refer to Figures 7A to 7C The tightening of nut 130 will be explained. Furthermore, any points that overlap with the above explanation will be omitted where appropriate.
[0058] First, such as Figure 7A As shown, the outer sleeve 21 is inserted from above the top bracket 200 by engaging the hexagonal hole 21a on the lower end with the nut 130. Furthermore, in this modified example, the outer diameter of the damping force adjustment dial 120 is smaller than the diameter of the external thread portion 111 of the piston rod 110, so the damping force adjustment dial 120 does not obstruct the insertion of the inner sleeve 22 when the inner sleeve 22 (elliptical hole 22a) engages with the milled surface 112. Therefore, in this modified example, the damping force adjustment dial 120 is not disassembled.
[0059] Next, as Figure 7B As shown, the inner sleeve 22 is inserted into the interior of the outer sleeve 21. Thus, the inner sleeve 22 engages with the milled surface 112 of the piston rod 110 at the elliptical hole 22a at its lower end. Furthermore, with the square portion 23a of the extension rod 23 engaged at the square hole 22b on its upper end, the extension rod 23 is connected to the inner sleeve 22.
[0060] Next, as Figure 7C As shown, with the protrusion of the second tool T2, such as the pawl handle, inserted into the square recess 23b on the upper surface of the extension rod 23, the inner sleeve 22 and the piston rod 110 are fixed (and kept non-rotating) by the second tool T2 via the extension rod 23.
[0061] Next, the hexagonal portion 21b on the upper side of the outer sleeve 21 is held in place by a third tool T3 such as a wrench (see reference). Figure 5 (a) and Figure 5 (c) and insert the protrusion of the first tool T1, such as a torque wrench, into the third tool T3. Then, the nut 130 is tightened by the first tool T1 via the third tool T3 and the outer sleeve 21. At this time, as described above, the piston rod 110 is kept non-rotating, so the piston rod 110 does not rotate with the tightening of the nut 130.
[0062] In the embodiment described above, the tool assembly is used to install the shock absorber 100 onto the top bracket 200 by tightening the nut 130. It includes outer sleeves 11 and 21 and inner sleeves 12 and 22. The outer sleeves 11 and 21 have hexagonal holes 11a and 21a (non-circular holes) on their lower (one-end) inner circumferential surfaces for engaging with the nut 130, and hexagonal portions 11b and 21b (non-circular portions) for fastening on their upper (other-end) outer circumferential surfaces. The inner sleeves 12 and 22 are inserted into the outer sleeves 11 and 21. The inner circumferential surfaces of the inner sleeves 12 and 22 have elliptical holes 12a and 22a (non-circular holes) on their lower (one-end) inner circumferential surfaces for engaging with the shock absorber 100 (the milled surface 112 of the piston rod 110), and square holes 12b and 22b (non-circular holes) for fixing are provided on their upper (other-end) inner circumferential surfaces.
[0063] Therefore, with the piston rod 110 fixed via the inner sleeve 12 (extension rod 13) using the second tool T2, the nut 130 can be tightened via the outer sleeve 11 using the first tool T1 (third tool T3). This prevents the piston rod 110 from rotating due to the tightening of the nut 130. Thus, according to this embodiment, even if the nut 130 used to mount the shock absorber 100 to the top bracket 200 is located below the mounting surface of the top bracket 200 facing the vehicle body, the nut 130 can be properly tightened.
[0064] In addition, in this embodiment, the outer sleeves 11 and 21 have openings 11c and 21c on their sides that allow visual identification of the inner sleeves 12 and 22 that are inserted inside.
[0065] Therefore, for example, it is possible to visually confirm, from above the top bracket 200 diagonally downwards via openings 11c and 21c, that the inner sleeves 12 and 22 have been inserted into the outer sleeves 11 and 21. Thus, the inner sleeves 12 and 22 can be reliably installed, allowing for more appropriate tightening of the nut 130.
[0066] In this embodiment, the inner sleeves 12 and 22 are inserted entirely into the outer sleeves 11 and 21. The tool assembly may also include extension rods 13 and 23. The extension rods 13 and 23 have square portions 13a and 23a (non-circular portions) on the outer peripheral surface of the lower end (one end) that engage with square holes 12b and 22b (non-circular holes) on the upper end (the other end) of the inner sleeves 12 and 22, and extend and protrude from the upper end (the other end) of the outer sleeves 11 and 21 on the upper end (the other end).
[0067] Therefore, shortening the vertical length of the inner sleeves 12 and 22 makes it easier to insert the inner sleeves 12 and 22 into the outer sleeves 11 and 21 through a clearance fit. As a result, the inner sleeves 12 and 22 can be reliably installed, allowing for more appropriate tightening of the nut 130.
[0068] Furthermore, in the above description, examples of non-circular holes include the hexagonal holes 11a and 21a of the outer sleeves 11 and 21, and the elliptical holes 12a and 22a and the square holes 12b and 22b of the inner sleeves 12 and 22. However, any hole other than a perfect circle can be used as a non-circular hole; it can also be other polygonal shapes, holes with flat or curved surfaces, etc.
[0069] Similarly, in the above description, examples of non-circular parts include the hexagonal portions 11b and 21b of the outer sleeves 11 and 21, and the square portions 13a and 23a of the extension rods 13 and 23. However, any part other than a perfect circle can be a non-circular part, such as a polygonal part, a part with a flat or curved surface, an elliptical part, etc.
[0070] Furthermore, as described above, the lengths of the inner sleeves 12 and 22 can be shortened by using extension rods 13 and 23. However, the extension rods 13 and 23 can also be omitted, and the inner sleeves 12 and 22 can extend upwards towards the outer sleeves 11 and 21 when inserted into them.
[0071] Furthermore, in the above description, openings 11c and 21c are provided in the outer sleeves 11 and 21, so the insertion of the inner sleeves 12 and 22 into the outer sleeves 11 and 21 can be visually confirmed. However, the engagement of the elliptical holes 12a and 22a of the inner sleeves 12 and 22 with the piston rod 110 (milled surface 112) can be confirmed by feel, sound, etc. Therefore, the openings 11c and 21c can be omitted.
[0072] Furthermore, in the above description, the shock absorber 100 is mounted to the top bracket 200 by tightening the nut 130 on the piston rod 110. However, it is also possible to mount the shock absorber 100 to the top bracket 200 by tightening the nut 130 on other parts of the shock absorber 100 (e.g., the damping force adjustment rod). Additionally, the structure of the shock absorber 100 is not limited to the above description and any structure can be used. For example, the shock absorber 100 may also be a structure where the damping force cannot be adjusted.
Claims
1. A tool assembly for mounting a shock absorber to a top bracket by tightening of a nut, characterized by, have: The outer sleeve has a non-circular hole on the inner circumferential surface of one end that engages with the nut, and a non-circular part for fastening is provided on the outer circumferential surface of the other end. and The inner sleeve is inserted into the outer sleeve. A non-circular hole that engages with the shock absorber is provided on the inner circumferential surface of one end, and a non-circular hole for fixing is provided on the inner circumferential surface of the other end.
2. The tool assembly according to claim 1, characterized in that, The outer sleeve has an opening on its side that allows visual identification of the inner sleeve inserted inside.
3. The tool assembly according to claim 1 or 2, characterized in that, The inner sleeve is inserted entirely into the outer sleeve. The tool assembly also includes an extension rod, which has a non-circular portion on the outer circumferential surface of one end that engages with the non-circular hole on the other end of the inner sleeve, and extends and protrudes from the other end of the outer sleeve on the other end.