JP2009262267A - Bridge type tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bridge type tool enabling the operation of the center part of a rotary body even if the sizes of a casing and the rotary body are changed or the position of a tightening portion at the joint surface of the casing is changed. <P>SOLUTION: In this bridge type tool, a base plate 20 has first and second elongated holes 24, 25 which have respective center lines projecting toward the rotary body 15 (a ring gear 13, a clutch 14) and which are arranged parallel to each other so that these center lines cross each other and first and second convex curves 27, 28 which extend parallel to the first and second elongated holes 24, 25 and which are opposed to the outer peripheral surface of the rotary body 15. A tightening bolt 18 is movably inserted into the first elongated hole 24, and a corresponding pole 21 is movably inserted into the second elongated hole 25. A pair of third elongated holes 26 which extends in the longitudinal direction of a bridge 22 and which allows the pole 21 to be movably inserted therein are formed at both ends of the bridge 22 in the longitudinal direction. The base plate 20 is so disposed that a tangent 36 at the portion of the first convex curve 27 nearest the rotary body 15 is orthogonal to the radius line 37 of the rotary body 15. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is a bridge-type tool that is attached to a joint surface lower than the outer end surface of a rotating body of a casing that supports the rotating body, and that operates the central part of the rotating body, and is disposed to face the rotating body. And a pair of base plates fixed to the joint surface by fastening bolts, a pair of support posts erected on the base plates, a bridge bridged between the support posts, and a center portion of the bridge. The present invention relates to improvement of a tool made up of a tool shaft for operating the central part of a rotating body.

  This type of bridge-type tool is used to adjust the center of the rotating body inside the casing by removing the cover once. It can be mounted using other component mounting holes. For this reason, the bridge-type tool has a bridge arranged on the diameter line even when a pair of fastening portions arranged across the rotating body are not arranged on the diameter line passing through the center of the rotating body on the joint surface of the casing. Therefore, it is necessary to accurately operate the central portion of the rotating body with the tool shaft supported by the bridge.

  Therefore, in such a conventional bridge type tool, every time the size of the casing or the rotating body is changed or the position of the fastening part on the joining surface of the casing is changed, peripheral parts arranged near the fastening part, for example, In consideration of avoiding interference with the starter motor, etc., additional processing was applied to the base plate and bridge in response to the above changes, and they were newly manufactured. Since there are many types of bridge-type tools, it was necessary to secure a considerable storage space for them.

  The present invention has been made in view of such circumstances, and avoids interference with peripheral parts even if the size of the casing or the rotating body is changed or the position of the fastening portion on the joining surface of the casing is changed. An object of the present invention is to provide a bridge-type tool that enables operation of the center part of a rotating body by adjusting the mounting position of the rod.

  In order to achieve the above object, the present invention is a bridge-type tool that is attached to a joint surface of a casing that supports a rotating body, which is lower than the outer end surface of the rotating body, and operates the center of the rotating body. A pair of base plates which are arranged opposite to each other with the body sandwiched between them and fastened to the joint surface by fastening bolts, a pair of support posts erected on the base plates, and a bridge bridged between the support posts, Each of the base plates has a center line that is curved so as to be convex toward the rotating body, and includes a tool shaft that is supported by the center of the bridge and operates the center of the rotating body. First and second elongated holes arranged so that their center lines intersect each other, and first and second convex curved surfaces extending substantially parallel to the first and second elongated holes and facing the outer peripheral surface of the rotating body. Provided in front of the first slot The fastening bolts are movably inserted, the corresponding pillars are movably inserted into the second elongated holes, and both ends of the bridge in the longitudinal direction extend in the longitudinal direction of the bridge. A pair of third elongated holes that can be inserted is provided, and when the base plate is fixed to the joint surface, the tangent of the portion closest to the rotating body of the first convex curved surface is substantially orthogonal to the radial line of the rotating body The first feature is to be arranged as described above.

  In addition to the first feature, the present invention is a curve that changes the centerline of the first slot so that the curvature increases toward the intersection of the centerlines of the first and second slots. The second feature is that the center line of the second long hole is formed by an arc having a constant curvature.

  Furthermore, in addition to the first or second feature, the present invention forms the second elongated hole longer than the first elongated hole, and the first elongated hole has one end in the middle of the second elongated hole. The third feature is that the first portion is formed close to the first portion.

  According to the first feature of the present invention, the first elongated hole of the base plate is overlapped on the joint surface of the casing while the tangent line of the first convex curved surface of the base plate is substantially orthogonal to the radial line of the rotating body. The base plate is fastened to the joint surface by fastening bolts inserted through one long hole, and the pair of struts are arranged so that the tool shaft supported at the center of the bridge is aligned coaxially with the rotating body in plan view. 2 Select the insertion position into the long hole and the insertion position of these struts into the third long hole of the bridge, and fix the struts to the base plate and secure the bridge to the struts so that both fastening bolts are positioned. Regardless, the tool axis can be arranged coaxially with the rotating body, and the central portion of the rotating body can be manipulated accurately. Therefore, it is easy to adjust the base plate to a posture that does not interfere with the surrounding parts, and even if the size of the casing or the rotating body is changed or the position of the fastening portion on the joint surface of the casing is changed, the same position can be obtained. Bridge-type tools can be used, and versatility is high.

  According to the second feature of the present invention, when the position of the base plate is adjusted, the distance between the second convex curved surface and the outer peripheral surface of the rotating body can be increased or decreased at an accelerated speed by a slight movement of the first elongated hole. Therefore, the change in the mounting posture of the base plate can be greatly taken, and the degree of freedom of mounting can be expanded.

  According to the 3rd characteristic of this invention, the adjustable range of the attachment position to the base plate of a support | pillar can be enlarged, and versatility can be improved more.

  The form of the Example of this invention is demonstrated based on the suitable Example of this invention shown to an accompanying drawing.

  1 is a plan view showing a bridge type tool according to an embodiment of the present invention in use, FIG. 2 is a perspective view of the tool, FIG. 3 is an exploded perspective view of the tool, and FIG. It is shape explanatory drawing of 1 and a 2nd long hole.

  1 and 2, an automobile engine casing 10 is provided with a circular opening 11 at one end thereof and a mounting flange 12 having an annular joint surface 12a surrounding the opening 11. The ring gear 13 and the clutch 14 are disposed so as to be exposed from the portion. Hereinafter, the ring gear 13 and the clutch 14 are collectively referred to as a rotating body 15. For convenience, the casing 10 is disposed with the joint surface 12a facing upward.

  The joint surface 12a of the mounting flange 12 occupies a position one step lower than the outer end surface of the rotating body 15, and a transmission case (not shown) is bolted to the joint surface 12a.

  The mounting flange 12 is provided with a plurality of bolt holes 17, 17... That pass through the mounting flange 12 in the vertical direction and open to the joint surface 12 a, and the bridge-type tool of the present invention is utilized using these bolt holes 17, 17. T is attached. In the case of the illustrated example, the bridge-type tool T is used when the release member 14 a disposed at the center of the clutch 14 is pressed to set the initial position of the automatic wear compensation device for the clutch 14.

  The bridge type tool T will be described with reference to FIGS.

  The bridge-type tool T is disposed so as to face the rotating body 15 and is fixed to the pair of base plates 20 and 20 fixed to the joint surface 12a by fastening bolts 18 and 18, respectively. A pair of support columns 21, 21 provided above and extending above the rotating body 15, a bridge 22 bridged between the support columns 21, 21 above the rotating body 15, and a clutch 14 supported by the center of the bridge 22. The tool shaft 23 is configured to press the release member 14a.

  As clearly shown in FIGS. 1 and 4, each base plate 20 has center lines 24 a and 25 a curved so as to be convex toward the rotating body 15, and these center lines 24 a and 25 a are mutually connected. First and second long holes 24 and 25 arranged so as to intersect with each other with an obtuse angle α, and extending from these first and second long holes 24 and 25 at equal distances a and b, that is, first and second long holes First and second convex curved surfaces 27 and 28 extending substantially parallel to the holes 24 and 25 and facing the outer peripheral surface of the rotating body 15 are provided. The fastening bolt 18 is movably inserted into the first long hole 24, and the corresponding support column 21 is movably inserted into the second long hole 25. In addition, a pair of third long holes 26 and 26 extending in the longitudinal direction of the bridge 22 are provided at both ends in the longitudinal direction of the bridge 22, and a pair of support columns 21 and 21 are moved in the third long holes 26 and 26. Inserted as possible.

  The fastening bolt 18 has a screw shaft portion 18 a and a hexagonal head portion 18 b with a flange 18 c formed integrally with the upper end portion thereof, and the screw shaft portion 18 a is a first length of the base plate 20. After the insertion into the hole 24 and the bolt hole 17, the first nut 31 is screwed and tightened on the lower surface side of the mounting flange 12. At this time, the first nut 31 and the hexagonal head 18b with the flange 18c of the fastening bolt 18 opposed to each other with the base plate 20 and the mounting flange 12 interposed therebetween press the base plate 20 and the mounting flange 12 to press the base plate. 20 is fixed to the joint surface 12 a of the mounting flange 12. Thus, the distance a from the first elongated hole 24 to the first convex curved surface 27 is set as small as possible within a range in which the flange 18c of the hexagonal head 18b does not protrude from the first convex curved surface 27 of the base plate 20. .

The column 21 has a shaft portion 21a and a pair of first and second male screw portions 21c ₁ connected to the upper and lower ends of the shaft portion 21a via annular step portions 21b ₁ and 21b ₂ and having a smaller diameter than the shaft portion 21a. 21c _2, and an engaging portion 21d for a spanner for rotating the shaft portion 21a is formed on the outer periphery of the shaft portion 21a. The first and second male screw portions 21c ₁ and 21c ₂ may have the same diameter or different diameters. After the first male screw portion 21c ₁ of the support column 21 is inserted into the second long hole 25 of the base plate 20, the second nut 32 is screwed and tightened on the lower surface side of the base plate 20. The second nut 32 and the annular stepped portion 21b ₁ facing each other with the base plate 20 interposed therebetween press the base plate 20, whereby the support column 21 is erected and fixed on the upper surface of the base plate 20. Thus, the distance b from the second elongated hole 25 to the second convex curved surface 28 is set as small as possible within a range in which the column 21 does not protrude from the second convex curved surface 28 of the base plate 20.

The second male threaded portion 21c ₂ of the support column 21 is screwed and tightened with the third nut 33 on the upper surface side of the bridge 22 after being inserted into the third elongated hole 26 of the bridge 22. The bridge 22 is fixed to the support column 21 by the third nut 33 and the annular stepped portion 21b ₂ facing each other with the bridge 22 interposed therebetween.

  A screw hole 34 is provided in the longitudinal center of the bridge 22, and the tool shaft 23 is screwed into the screw hole 34. The tool shaft 23 is fixed to the joint surface 12a by the fastening bolts 18 and 18 of the base plates 20 and 20, the standing positions of the support columns 21 and 21 to the base plates 20 and 20, and the support columns 21 and 20. By adjusting the fixing position of the bridge 22 to 21, it is arranged coaxially with the rotational axis 15 a of the rotating body 15, and at the lower end thereof is the opening edge of the central hole of the release member 14 a in the clutch 14. A conical pressing portion 23 a that can be engaged and pressed is formed, and a handle 23 b that rotates the tool shaft 23 is provided at the upper end portion of the tool shaft 23.

  The shape of the first and second elongated holes 24 and 25 will be described in detail with reference to FIG.

  The first center line 24a of the first long hole 24 is composed of a curve 24a whose curvature changes so as to increase toward the intersection 0 of the center lines 24a and 25a of the first and second long holes 24 and 25. The The curve 24a in which the curvature changes in this way is constituted by a portion where the curvature changes most greatly around the coordinate origin 0 (corresponding to the intersection point 0) in the cochlea line that can be expressed by r = 2 cos θ + 2.

  On the other hand, the center line 25a of the second long hole 25 is constituted by an arc 25a having a center on the x-axis of the coordinates. The second long hole 25 having the arc 25a as a center line is formed longer than the first long hole 24, and the first long hole 24 is formed so that one end thereof is close to an intermediate portion of the second long hole 25. The On the opposite side of each base plate 20 from the second convex curved surface 28, a concave curved surface 29 extending substantially parallel to the second long hole 25 is formed in order to reduce the weight and size of the base plate 20.

  Next, the operation of this embodiment will be described.

  In using the bridge-type tool T of the present invention, first, as shown in FIG. 1, a pair of bolt holes 17, 17 arranged with the rotating body 15 interposed between them at a position closest to an arbitrary diameter line of the rotating body 15 are formed. The first elongated holes 24, 24 are overlapped with the bolt holes 17, 17 with the tangent line 36 of the first convex curved surfaces 27, 27 of the pair of base plates 20, 20 being substantially orthogonal to the radial line 37 of the rotating body 15. The base plates 20 and 20 do not interfere with obstacles such as other parts arranged around the mounting flange 12, and the second convex curved surfaces 27 and 28 are as close as possible to the outer periphery of the rotating body 15. Select and arrange the position. Therefore, in each base plate 20, the screw shaft portion 18 a of the fastening bolt 18 is inserted into the first elongated hole 24 and the bolt hole 17 that overlaps the first elongated hole 24, and the first nut 31 is placed on the lower surface side of the mounting flange 12 at the lower end thereof. The base plate 20 is fastened to the joint surface 12a of the mounting flange 12 by screwing and tightening. Thus, in the illustrated example, the fastening bolts 18 and 18 are arranged at positions where a straight line 35 (see FIG. 1) connecting these axes is offset from the rotation axis 15a of the rotating body 15 by a slight distance e. The

Next, in plan view, the first male threaded portions 21c ₁ , 21c ₁ of the pair of columns 21, 21 are arranged so that the tool shaft 23 screwed into the central portion of the bridge 22 is aligned coaxially with the release member 14a at the central portion of the rotating body 15. The insertion position of 21c ₁ into the second long holes 25, 25 and the insertion position of the second male screw portions 21c ₂ , 21c ₂ of the support columns 21, 21 into the third long holes 26, 26 are selected. Then, the second nuts 32 and 32 are screwed and tightened to the first male screw portions 21c ₁ and 21c ₁ of the support columns 21 and 21 on the lower surface side of the base plates 20 and 20, so that the support columns 21 and 21 are attached to the base plate 20. Stand up. Further, both ends of the bridge 22 are fixed to the columns 21 and 21 by screwing and tightening the third nuts 33 and 33 to the second male screw portions 21c ₂ and 21c ₂ of the columns 21 and 21 on the upper surface side of the bridge 22. .

  Thus, the tool shaft 23 screwed and supported by the bridge 22 is arranged coaxially with the release member 14a of the clutch 14 regardless of the position of the fastening bolts 18, 18, so that the handle 23b is rotated to The conical pressing portion 23a of the shaft 23 is advanced toward the release member 14a and engaged with the center hole thereof, thereby accurately pressing the release member 14a, whereby the initial position of the automatic wear compensation device of the clutch 14 is determined. Can be set.

  By the way, in the 1st long hole 24 of each base board 20, the center line 24a is comprised by the curve which increases a curvature toward the intersection 0 of both the center lines 24a and 25a of the 1st and 2nd long holes 24 and 25. FIG. In the second long hole 25, the center line 25 a is formed by an arc, and the first and second convex curved surfaces 27 and 28 facing the outer peripheral surface of the rotating body 15 are formed by the first and second long holes 24. , 25 so that the first elongated hole 24 overlaps the bolt hole 17 selected for mounting the base plate 20 and the tangent line 36 of the first convex curved surface 27 is the radial line of the rotating body 15. When the position of the base plate 20 is set so as not to interfere with obstacles around the rotating body 15 while being substantially orthogonal to 37, the second convex curved surface 28 is formed on the outer periphery of the rotating body 15 according to the movement of the first long hole 24. Because it will move forward and backward with respect to the surface, The slight movement of 24, the distance between the rotary member 15 the outer peripheral surface and the second convex surface 28 can be the acceleration increased or decreased. Therefore, since the amount of change in the mounting posture of the base plate 20 can be increased, the degree of freedom of mounting the base plate 20 when selecting a position that avoids interference with surrounding obstacles can be increased.

  Thus, even if the size of the mounting flange 12 or the rotating body 15 is changed or the position of the bolt hole 17 on the joint surface 12a of the mounting flange 12 is changed, the same bridge type tool T can be used. The center part of the rotating body 15 can be accurately operated by the tool shaft 23 without newly manufacturing the base plate 20 and the bridge 22, and is highly versatile.

  The versatility can be further enhanced by forming the second long hole 25 longer than the first long hole 24.

  The present invention is not limited to the above embodiment, and various design changes can be made without departing from the scope of the invention. For example, if the bolt hole 17 of the mounting flange 12 is a screw hole, the first nut 31 can be eliminated by screwing and tightening the fastening bolt 18 into the screw hole 34. The center line 24a of the first oblong hole 24 can be constituted by a portion where the curvature of an ellipse or an involute curve greatly changes in addition to the cochlea line. The bridge-type tool T of the present invention can also be applied to a bearing puller used for removing a ball bearing fitted on a crankshaft or the like.

The top view which shows the bridge type tool which concerns on the Example of this invention in use condition. The perspective view of the tool. The disassembled perspective view of the tool. Shape explanatory drawing of the 1st and 2nd long hole in the base board of the tool.

Explanation of symbols

T ... Bridge-type tool 0 ... Intersection 10 of the center lines 24a, 25a ... Casing 12a ... Joining surface 15 ... Rotating body 18 ... Fastening bolt 20 ... ... Base plate 21 ... Post 22 ... Bridge 23 ... Tool shaft 24 ... First long hole 24a ... First long hole center line 25 ... First 2 long hole 25a ... center line 26 of second long hole ... third long hole 27 ... first convex curved surface 28 ... second convex curved surface 36 ... first convex curved surface Tangent line 37 ... Radius of the rotating body

Claims (3)

A bridge-type tool that is attached to the joint surface (12a) of the casing (10) that supports the rotating body (15) and that is lower than the outer end surface of the rotating body (15), and operates the center of the rotating body (15). And a pair of base plates (20, 20) that are opposed to each other with the rotating body (15) sandwiched between them and fixed to the joint surface (12a) by fastening bolts (18), and these base plates (20, 20) a pair of support columns (21, 21), a bridge (22) bridged between these support columns (21, 21), and a rotating body (supported by the center of the bridge (22)). 15) consisting of a tool axis (23) for operating the central part of
Each base plate (20) has center lines (24a, 25a) curved so as to protrude toward the rotating body (15), and the center lines (24a, 25a) cross each other. The first and second elongated holes (24, 25) arranged in parallel to the first and second elongated holes (24, 25) and extending substantially parallel to the first and second elongated holes (24, 25) and facing the outer peripheral surface of the rotating body (15) 2 convex curved surfaces (27, 28) are provided, the fastening bolts (18) are movably inserted into the first elongated holes (24), and the corresponding struts (21) are inserted into the second elongated holes (25). And a pair of third pillars extending in the longitudinal direction of the bridge (22) at both ends in the longitudinal direction of the bridge (22) and movably inserted through the pair of columns (21, 21). A long hole (26) is provided, and the base plate (20) is fixed to the joint surface (12a). The tangent (36) of the portion of the first convex curved surface (27) closest to the rotating body (15) is arranged so as to be substantially orthogonal to the radial line (37) of the rotating body (15). Bridge type tool. The bridge-type tool according to claim 1, wherein
The curvature of the center line (24a) of the first elongated hole (24) increases toward the intersection (0) of both center lines (24a, 25a) of the first and second elongated holes (24, 25). A bridge-type tool comprising a curved line that changes in this way, and the center line (25a) of the second long hole (25) having a constant curvature. The bridge-type tool according to claim 1 or 2,
The second elongated hole (25) is formed longer than the first elongated hole (24), and one end of the first elongated hole (24) is close to an intermediate portion of the second elongated hole (25). A bridge-type tool characterized by being formed as described above.

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