Strut bearing device and strut suspension for vehicle

Abstract

To avoid the lowering of the drain performance of muddy water or the like which has intruded once while suppressing the lowering of seal performance.SOLUTION: A strut bearing device A includes a strut bearing 1 and an upper spring seat 14. The strut bearing 1 comprises an upper-side case 2 and a lower-side case 3, an upper-side bearing ring 4 and a lower-side bearing ring 5, rolling bodies 6 rolling between the upper-side bearing ring 4 and the lower-side bearing ring 5, and a seal 9 located at the outside RO of the rolling bodies 6 in a radial direction. The upper spring seat 14 contacts with the lower-side case 3. An outside-diameter side recess DO which is formed of the lower case 3 and the upper spring seat 14, and an inside-diameter side recess DI which is stepped down to the inside RI of a radial direction from the outside-diameter side recess DO are formed at the inside of an axial clearance C1 between the upper-side case 2 and the upper spring seat 14 in the radial direction. The inside-diameter side recess DI receives muddy water or the like which has intruded to the inside RI of the radial direction from the axial clearance C1.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a strut bearing device used in a strut suspension of a vehicle. [Background technology]

[0002] Strut suspensions, which use coil springs to support the wheels on the vehicle body and shock absorbers to absorb vertical vibrations, are widely used for the front wheels of passenger cars, with expandable struts that incorporate shock absorbers attached to the axle.

[0003] A strut bearing device used in the upper part of a strut suspension has an upper case made of synthetic resin that holds an upper raceway (e.g., upper cap 3 in Patent Document 1), a lower case made of synthetic resin that holds a lower raceway (e.g., lower cap 4 in Patent Document 1), and an inner diameter side seal material (e.g., inner seal 6 in Patent Document 1) and an outer diameter side seal material (e.g., outer seal 7 in Patent Document 1) made of elastomer that are provided in the lower case (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] U.S. Patent No. 10,753,389 Summary of the Invention [Problem to be solved by the invention]

[0005] Such strut bearing devices are used in harsh muddy environments where they are directly exposed to muddy water splashed up by the wheels on the road. Furthermore, when a high-pressure washer is used to wash the car, the strut bearing device is exposed to high-pressure water sprayed from the washer when washing the undercarriage.

[0006] Therefore, for example, in the strut bearing device of Patent Document 1, if high-speed water such as muddy water enters the gap between the upper cap 3 and the lower cap 4 from the outer diameter side, the water will rise along the outer surface of the lower cap 4 and will not be able to slow down sufficiently, causing the outer seal 7 to become wet, which may reduce sealing performance.

[0007] Furthermore, if a labyrinth structure is adopted to slow down the high-speed water that has entered through the gap, the structure becomes complicated and the ability to drain muddy water and the like that has entered the interior is reduced.

[0008] An object of the present invention is to provide a strut bearing device that prevents a decrease in sealing performance while maintaining a drainage performance for muddy water and the like that has once entered the inside. [Means for solving the problem]

[0009] The gist of the present invention is as follows.

[0010] [1] A strut bearing device including a strut bearing and an upper spring seat which is a spring support component that supports an upper end of a coil spring, The strut bearing is an upper case and a lower case; an upper raceway ring held by the upper case; a lower raceway held by the lower case; a rolling element that rolls between the upper raceway ring and the lower raceway ring; a seal positioned radially outward of the rolling element; Equipped with The upper spring seat contacts the lower case, an outer diameter side recess formed by the lower case and the upper spring seat, the outer diameter side recess being stepped down radially inward from the outer diameter side recess, the outer diameter side recess being formed by the lower case and the upper spring seat, the inner diameter side recess being stepped down radially inward from the outer diameter side recess, The inner diameter recess receives muddy water or the like that has infiltrated radially inward from the axial gap. Strut bearing assembly.

[0012] [ 2 〕 The radial length of the inner diameter side recess is equal to or greater than the axial gap, The position of the upper end of the inlet of the inner diameter side recess is higher than the position of the upper end of the axial gap. [1] to 1. The strut bearing assembly as described above.

[0013] [ 3 〕 [1] or [2] of A strut suspension for a vehicle equipped with a strut bearing device. [Effects of the Invention]

[0014] The strut bearing device and vehicle strut suspension according to the present invention have an outer diameter recess located radially inward of the axial gap between the upper case and the upper spring seat, or between the upper case and the lower case, and an inner diameter recess stepped radially inward from the outer diameter recess, and the inner diameter recess receives muddy water or the like that seeps radially inward from the axial gap.

[0015] When high-speed water such as muddy water infiltrates through the axial gap, the high-speed water first enters the inner diameter recess located radially inward of the axial gap, passes through the outer diameter recess, and then approaches the outer diameter seal. Therefore, the high-speed water is once received by the inner diameter recess and significantly slowed down, and then further slowed down in the outer diameter recess before approaching the outer diameter seal, thereby preventing a decrease in the sealing performance of the outer diameter seal.

[0016] Furthermore, since there is no labyrinth structure, and only the outer diameter side recess and the inner diameter side recess are provided, the structure is not complicated and can be simplified, and the drainage of muddy water and the like that has once entered the interior is not reduced. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a schematic partial cross-sectional view of a strut suspension for a vehicle equipped with a strut bearing device according to a first embodiment of the present invention. [Figure 2] FIG. 2 is an enlarged longitudinal cross-sectional view of a main portion showing the strut bearing device and an upper insulator. [Figure 3] FIG. 3 is an enlarged longitudinal sectional view of a main part similar to FIG. 2, showing a first modified example. [Figure 4] FIG. 10 is an enlarged longitudinal sectional view of a main part similar to FIG. 2, showing a second modified example. [Figure 5] FIG. 10 is an enlarged longitudinal sectional view of a main part similar to FIG. 2, showing a third modified example. [Figure 6] FIG. 10 is an enlarged longitudinal sectional view of a main part similar to FIG. 2, showing a fourth modified example. [Figure 7] FIG. 10 is an enlarged longitudinal sectional view of a main part similar to FIG. 2, showing a fifth modified example. [Figure 8] FIG. 10 is an enlarged longitudinal sectional view of a main part similar to FIG. 2, showing a sixth modified example. [Figure 9] FIG. 12 is an enlarged longitudinal sectional view of a main part similar to FIG. 2, showing a seventh modified example. [Figure 10] 10 is an enlarged longitudinal cross-sectional view of a main portion showing an example of changes in the flow rate of water that has entered through an axial gap in a strut bearing device having an outer diameter recess and an inner diameter recess. FIG. [Figure 11] FIG. 10 is an enlarged longitudinal cross-sectional view of a main portion showing an example of changes in the flow rate of water that has entered through an axial gap in a conventional strut bearing device. [Figure 12] FIG. 10 is a diagram showing the analysis results of the flow velocity of water that has infiltrated through an axial gap in an example of an analytical model of a strut bearing device having an outer diameter recess and an inner diameter recess. [Figure 13]FIG. 6 is an enlarged longitudinal sectional view of a main portion showing a strut bearing device according to a second embodiment of the present DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0019] In this specification, the direction parallel to the rotation axis O (see Figure 1) of the strut bearing 1 is referred to as the "axial direction" (see, for example, arrow J in Figure 1), the direction perpendicular to the rotation axis O is referred to as the "radial direction" (see, for example, arrow R in Figure 1), the radial direction approaching the rotation axis O is referred to as the "radial inward direction" (see, for example, arrow RI in Figure 1), and the radial direction away from the rotation axis O is referred to as the "radial outward direction" (see, for example, arrow RO in Figure 1).

[0020] [Embodiment 1] <Strut suspension> The strut suspension S of a vehicle shown in the partial cross-sectional schematic diagram of Figure 1 is used with an expandable strut 10 incorporating a shock absorber fixed to an axle (not shown) and an upper mount 16 fixed to the vehicle body.

[0021] The upper part of the strut suspension S is equipped with a strut bearing 1 that supports the vehicle body and oscillates and rotates as the direction of the steered wheels changes due to steering operation. The oscillating angle of the strut bearing 1 is determined according to the allowable steering angle of the wheels, and is set, for example, in the range of 40° to 50°.

[0022] A coil spring 11, which serves as a suspension spring, and a dust boot 12, which protects the shock absorber oil seal from foreign matter such as sand, are provided on the radially outer side RO of the strut 10. The strut suspension S includes a spring support part 13 that supports the upper end of the coil spring 11. As shown in the enlarged vertical cross-sectional view of a main part in Figure 2, the spring support part 13 consists of an upper spring seat 14 and an upper insulator 15.

[0023] <Strut bearing device> As shown in the schematic diagram of Figure 1 and the longitudinal cross-sectional view of Figure 2, the strut bearing device A according to embodiment 1 of the present invention includes a strut bearing 1 and an upper spring seat 14, which is a spring support part 13 that supports the upper end of a coil spring 11.

[0024] The strut bearing 1 includes an upper case 2, a lower case 3, an upper raceway ring 4, an upper raceway ring 5, rolling elements 6, a cage 7, an inner diameter side seal 8, an outer diameter side seal 9, and the like.

[0025] Upper case 2 is fixed to the upper end of strut 10, and lower case 3 receives upper spring seat 14 from above. Upper raceway ring 4 is held in upper case 2, and lower raceway ring 5 is held in lower case 3. Rolling elements 6 roll between upper raceway ring 4 and lower raceway ring 5, and cage 7 holds adjacent rolling elements 6 so that they do not come into contact with each other.

[0026] The inner diameter side seal 8 is located on the radially inner side RI of the rolling element 6, and the outer diameter side seal 9 is located on the radially outer side RO of the rolling element 6.

[0027] The upper and lower raceways 4, 5, and upper spring seats 14 are made of steel, and are formed by pressing steel plates and then quench-hardened after processing. The upper and lower cases 2, 3 are made of synthetic resin, and the inner seal 8 and outer seal 9 are made of elastomer.

[0028] The synthetic resin used for the upper case 2 and the lower case 3 is, for example, a polyamide resin (PA66, PA46, PA612, PA6, PA9T, PA10T, etc.), and contains 20 to 60 wt % of glass fiber (GF) as a reinforcing fiber.

[0029] The elastomers used for the inner seal 8 and outer seal 9 are thermoplastic elastomers (TPE), such as TPS (styrene-based), TPO (olefin-based), TPU (urethane-based), TPA (amide-based), and TPEE (ester-based), and the rubber materials are nitrile rubber (NBR), hydrogenated nitrile rubber (HNBR), acrylic rubber (ACM), ethylene-acrylic rubber (AEM), fluororubber (FKM, FPM), silicone rubber (VQM), etc. The rubber materials can be one type or an appropriate blend of two or more types of rubber.

[0030] <Outer diameter recess and inner diameter recess> As shown in the enlarged vertical cross-sectional view of a main portion in Figure 2, strut bearing device A has an outer diameter side recess DO formed by the lower case 3 and upper spring seat 14, and an inner diameter side recess DI stepped radially inward from the outer diameter side recess DO, at a radially inward side RI of an axial gap C1 between the upper case 2 and upper spring seat 14. The inner diameter side recess DI receives muddy water and the like that seeps into the radially inward side RI from the axial gap C1.

[0031] 2 is annular, and a longitudinal cross section of the inner diameter side recess DI along the radial direction R is substantially triangular. The upper surface of the inner diameter side recess DI is a substantially horizontal surface formed by the lower case 3, and the lower surface of the inner diameter side recess DI is an inclined surface formed by the upper spring seat 14 that rises radially inward RI.

[0032] The inner diameter side recess DI may have a shape of a first modified example shown in the enlarged longitudinal cross-sectional view of a main portion of Fig. 3, a shape of a second modified example shown in the enlarged longitudinal cross-sectional view of a main portion of Fig. 4, a shape of a third modified example shown in the enlarged longitudinal cross-sectional view of a main portion of Fig. 5, a shape of a fourth modified example shown in the enlarged longitudinal cross-sectional view of a main portion of Fig. 6, a shape of a fifth modified example shown in the enlarged longitudinal cross-sectional view of a main portion of Fig. 7, or a shape of a sixth modified example shown in the enlarged longitudinal cross-sectional view of a main portion of Fig. 8. The inner diameter side recesses DI shown in Figs. 3 to 8 are all ring-shaped, similar to the inner diameter side recess DI shown in Fig. 2.

[0033] The inner diameter-side recess DI of Fig. 3, which is a first modified example, has a substantially triangular vertical cross section along the radial direction R, similar to the inner diameter-side recess DI of Fig. 2, but the upper surface of the inner diameter-side recess DI is an inclined surface that descends radially inward RI, and the lower surface of the inner diameter-side recess DI is a substantially horizontal surface. The inner diameter-side recess DI of Fig. 4, which is a second modified example, has a substantially rectangular vertical cross section along the radial direction R, and the upper and lower surfaces of the inner diameter-side recess DI are substantially horizontal surfaces. The inner diameter-side recess DI of Fig. 5, which is a third modified example, has a substantially trapezoidal vertical cross section along the radial direction R, and the outer diameter portion of the upper surface of the inner diameter-side recess DI is a substantially horizontal surface, the inner diameter portion of the upper surface of the inner diameter-side recess DI is an inclined surface that descends radially inward RI, and the lower surface of the inner diameter-side recess DI is a substantially horizontal surface.

[0034] In the inner diameter-side recess DI of Fig. 6, which is a fourth modified example, the longitudinal cross section of the inner diameter-side recess DI along the radial direction R is a substantially parallelogram, and the upper and lower surfaces of the inner diameter-side recess DI are inclined surfaces that rise radially inward RI. In the inner diameter-side recess DI of Fig. 7, which is a fifth modified example, the outer diameter side portion of the inner diameter-side recess DI is a substantially parallelogram like the fourth modified example (Fig. 6), and the inner diameter side portion of the inner diameter-side recess DI is a substantially rectangular shape like the second modified example (Fig. 4). In the inner diameter-side recess DI of Fig. 8, which is a sixth modified example, the inner diameter side portion of the inner diameter-side recess DI of the fourth modified example (Fig. 6) is extended upward so that the longitudinal cross section along the radial direction R is a substantially rectangular shape.

[0035] The inner diameter side recess DI may have a shape different from the shapes shown in the enlarged longitudinal cross-sectional views of the main part of FIGS. 2 to 8, and may not have a circular ring shape that is connected in the circumferential direction.

[0036] 2 to 8, the depth H (length in the radial direction R) of the inner diameter side recess DI is set to be equal to or larger than the axial clearance C1 (H≧C1), and the position F of the upper end of the inlet of the inner diameter side recess DI is set higher than the position G of the upper end of the axial clearance C1. This makes it easier for high-speed water that has entered through the axial clearance C1 to enter the inner diameter side recess DI, and also makes it easier for the high-speed water to decelerate.

[0037] By setting the position F of the inlet upper end of the inner diameter recess DI higher than the position G, in the examples of FIGS. 2 and 6 to 8, the axial length L of the inlet of the inner diameter recess DI is equal to or greater than the axial clearance C1 (L≧C1). In the examples of FIGS. 3 to 5, the axial length L is greater than the axial clearance C1 (L>C1). Furthermore, based on the analysis results shown below, it is more preferable that L≦2.0×C1. Furthermore, based on the analysis results shown below, it is more preferable that the radial length H of the inner diameter recess DI is H≧2.5×C1. The inner diameter end of the inner diameter recess DI is positioned radially outward RO from the pitch circle diameter of the rolling elements 6 to suppress deformation of the lower case 3 due to the load from the rolling elements 6.

[0038] 2 to 8 showing the first embodiment, the upper case 2 has an annular inner protrusion K at the lower end of its radially outer side RO that protrudes radially inward RI. The inner protrusions K are arranged intermittently, with one or more located around the circumference. The inner protrusion K engages with an outer diameter side recess DO to prevent separation of the upper case 2 and the lower case 3. In the strut bearing device A of the first embodiment, the inner protrusion K may be eliminated, as in a seventh modified example shown in the enlarged longitudinal cross-sectional view of a main part of FIG. 9, in which case a separation prevention structure (not shown) may be provided on the inner diameter side.

[0039] <Comparison of flow speed of infiltrating muddy water with and without inner diameter recess> (Analysis model) A comparison was made of the flow velocity below the outer seal 9 of water that entered through the axial gap C1 between models with and without the inner recess DI of the shape in Figure 2. That is, analytical models were created and a comparison was made using fluid analysis. The analytical model with the outer recess DO and the inner recess DI imitates the shape in Figure 2. The analytical model without the inner recess DI imitates the shape in Figure 2, with the outer surface of the lower case 3 in Figure 2 positioned at the position of virtual line I, and has a recess D with the shape shown in Figure 11.

[0040] (Analysis conditions) To simplify the analysis, an underwater environment was used. The position in the radial direction R from which water is ejected was the position where the nozzle meets the outer diameter of the upper spring seat 14 (see Figure 1), and the position in the axial direction J from which water is ejected was the position where the bottom end of the nozzle meets the top end of the outer diameter of the upper spring seat 14. The analysis was performed under conditions where the diameter of the nozzle was 2 mm and water was ejected from the nozzle at high speed with a flow velocity of 8 m / s.

[0041] In the analytical model having the outer diameter side recess DO and the inner diameter side recess DI, the axial clearance C1 shown in Figures 2 and 10 was set to 1.0 mm, the radial length H of the inner diameter side recess DI was set to 2.5 mm (H = 2.5 × C1), the axial length of the inlet of the inner diameter side recess DI was set to L = 2.0 mm (L = 2.0 × C1), the radial length M of the outer diameter side recess DO shown in Figure 10 was set to 2.0 mm, and the axial distance P between the end of the outer diameter side recess DO on the outer diameter side seal 9 side and the upper spring seat 14 was set to 3.0 mm.

[0042] In the analysis model without the inner diameter side recess DI, the axial gap C1 shown in Figure 11 was set to 1.0 mm, the radial length N of the recess D was set to 2.0 mm, and the axial distance Q between the end of the recess D on the outer diameter side seal 9 side and the upper spring seat 14 was set to 3.0 mm.

[0043] (Analysis results) An example of the change in flow velocity of water that has entered through the axial gap C1 (see Figures 2, 10, and 11) in strut bearing device A is shown in the enlarged longitudinal cross-sectional view of essential parts in Figure 10 for a case in which outer diameter side recess DO and inner diameter side recess DI are present, and in the enlarged longitudinal cross-sectional view of essential parts in Figure 11 for a case in which there is only recess D and no inner diameter side recess DI. Also, Figure 12 shows the analysis results of the flow velocity of water that has entered through the "axial gap" in an example analytical model of a strut bearing device that has "outer diameter side recess DO and inner diameter side recess DI," with the magnitude of the flow velocity being the length of the arrow.

[0044] When the flow velocity along the inner surface of the upper case 2 below the outer seal 9 is taken as 1 for an analytical model without the inner recess DI, the flow velocity for the analytical model with the outer recess DO and the inner recess DI is approximately 0.1 to 0.3, indicating that the outer recess DO and the inner recess DI have a significant deceleration effect. The reason for this is that when high-speed water infiltrates through the axial gap C1 of the strut bearing device A, which has the outer recess DO and the inner recess DI, the high-speed water first enters the inner recess DI located radially inward RI of the axial gap C1, passes through the outer recess DO, and then approaches the outer seal 9. Therefore, it is believed that the high-speed water is first received by the inner recess DI, where it is significantly decelerated, and then further decelerated by the outer recess DO.

[0045] [Embodiment 2] <Strut bearing device> In the strut bearing device B according to embodiment 2 of the present invention shown in the enlarged longitudinal cross-sectional view of a main part in Figure 13, the same reference numerals as those in Figures 1 to 9 of embodiment 1 indicate the same or corresponding parts, portions, locations, etc.

[0046] The lower case 3 of the strut bearing 1, which is part of the strut bearing device B, is made of synthetic resin with a built-in core E. The core E is made of steel and is formed by pressing a steel plate, and is quenched and hardened after processing as necessary. The lower case 3 is formed by injection molding with the core E as an insert work.

[0047] The lower case 3 has a cylindrical portion 3A and an annular portion 3B extending radially outward RO from the upper portion of the cylindrical portion 3A, and by incorporating a core wire E, it functions as an upper spring seat for a spring support part 13 that supports the upper end of a coil spring 11 (see Figure 1).

[0048] <Outer diameter recess and inner diameter recess> The strut bearing device B has an outer diameter side recess DO formed in the lower case 3 on the radially inner side RI between the upper case 2 and the lower case 3, and an inner diameter side recess DI stepped down from the outer diameter side recess DO to the radially inner side RI. The inner diameter side recess DI receives muddy water and the like that seeps into the radially inner side RI from the axial gap C2.

[0049] 13 is set to be equal to or greater than the axial clearance C2 (H≧C2), and the position F of the upper end of the inlet of the inner diameter side recess DI is set higher than the position G of the upper end of the axial clearance C2. This makes it easier for high-speed water that has entered through the axial clearance C2 to enter the inner diameter side recess DI, and also makes it easier for the high-speed water to decelerate.

[0050] By making the position F of the upper end of the inlet of the inner diameter side recess DI higher than the position G, the axial length L becomes larger than the axial gap C2 (L > C2). Furthermore, based on the above analysis results, it is more preferable that L ≦ 2.0 × C2. Furthermore, based on the above analysis results, it is more preferable that the radial length H of the inner diameter side recess DI is H ≧ 2.5 × C2. The inner diameter side end of the inner diameter side recess DI is positioned radially outward RO from the pitch circle diameter of the rolling elements 6 to suppress deformation of the lower case 3 due to the load received from the rolling elements 6.

[0051] <Action and effect> In the strut bearing device A of Embodiment 1 and the strut bearing device B of Embodiment 2, when high-speed water such as muddy water enters through the axial clearances C1, C2, the high-speed water first enters the inner diameter side recess DI, which is located radially inward RI from the axial clearances C1, C2, passes through the outer diameter side recess DO, and then approaches the outer diameter side seal 9. Therefore, the high-speed water is initially received by the inner diameter side recess DI and significantly slowed down, and is further slowed down by the outer diameter side recess DO before approaching the outer diameter side seal 9, thereby preventing a deterioration in the sealing performance of the outer diameter side seal 9.

[0052] Furthermore, since it does not have a labyrinth structure but only has an outer diameter side recess DO and an inner diameter side recess DI, the structure is not complicated and can be simplified, and the drainage of muddy water and the like that has once entered the interior is not reduced.

[0053] The above description of the embodiments is given by way of example only and is not intended to be limiting, and various improvements and modifications can be made without departing from the scope of the present invention. [Explanation of symbols]

[0054] 1 strut bearing 2 Upper case 3 Lower case 3A Cylindrical part 3B Circular part 4 Upper raceway 5 Lower raceway 6 rolling elements 7 Cage 8 Inner diameter seal 9 Outer diameter seal 10 Strut 11 Coil spring 12 Dust Boots 13 Spring support parts 14 Upper spring seat 15 Upper insulator 16 Upper mount A,B Strut bearing device C1, C2 axial clearance D recess DO Outer diameter side recess DI Inner diameter recess E Core F Position of the upper end of the entrance of the inner diameter recess G Position of the upper end of the axial gap H Depth of inner diameter recess (radial length) J-axis direction K Inner protrusion L Axial length of the inner diameter recess entrance M Radial length of outer diameter recess N Radial length of recess O Rotation axis P Axial distance between the outer seal end of the outer recess and the upper spring seat Q Axial distance between the outer seal end of the recess and the upper spring seat R Radial direction RI radially inward RO radially outward S strut suspension

Claims

1. A strut bearing device including a strut bearing and an upper spring seat which is a spring support component that supports an upper end of a coil spring, The strut bearing is an upper case and a lower case; an upper raceway ring held by the upper case; a lower raceway held by the lower case; a rolling element that rolls between the upper raceway ring and the lower raceway ring; a seal positioned radially outward of the rolling element; Equipped with The upper spring seat contacts the lower case, an outer diameter side recess formed by the lower case and the upper spring seat, the outer diameter side recess being stepped down radially inward from the outer diameter side recess, the outer diameter side recess being formed by the lower case and the upper spring seat, the inner diameter side recess being stepped down radially inward from the outer diameter side recess, The inner diameter recess receives muddy water or the like that has infiltrated radially inward from the axial gap. Strut bearing assembly.

2. The radial length of the inner diameter side recess is equal to or greater than the axial gap, The position of the upper end of the inlet of the inner diameter side recess is higher than the position of the upper end of the axial gap.

2. The strut bearing assembly of claim 1.

3. A strut-type suspension for a vehicle, comprising the strut bearing device according to claim 1 or 2.

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