JP2010121981A - Test device of automatic transmission - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detect defective coupling between an output shaft and a coupling part by the compression of a coil spring. <P>SOLUTION: A test device 1 for an automatic transmission includes: a conveyor 2 for conveying the automatic transmission; an input-shaft drive mechanism 3 connected to the input shaft of the automatic transmission conveyed by the conveyor; output shaft holders 6 for holding a plurality of kinds of output shafts 4 and 5 fitted to the automatic transmission; and output shaft connecting mechanisms 7 and 8 for taking output shafts out of the holders and fitting them to the automatic transmission, and connecting output shafts to dynamometers 9 and 10. Each output shaft connecting mechanism has a coupling part 13 into which one end of an output shaft is inserted to perform the spline joining of the output shaft. The coupling part 13 has an inner cylinder 13a into which one end of the output shaft is inserted to perform spline joining, an outer cylinder 13b in which the inner cylinder is fitted so as to be slidable in the axial direction of the output shaft, a spring 13c for projecting the inner cylinder out of the outer cylinder, and a detection means for detecting the compression of the spring 13c. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a test apparatus for an automatic transmission of a vehicle used in an automobile production line or the like, and in particular, an output shaft can be easily and reliably exchanged according to the type of the automatic transmission. is there.

  As an automatic transmission testing device, the one shown in FIG. 10 has been developed. The automatic transmission testing apparatus 101 includes a conveyor 102 that conveys the automatic transmission 100 as a workpiece, an input shaft drive mechanism 103 that is connected to the input shaft of the automatic transmission 100 that has been conveyed by the conveyor 102, and the automatic transmission A pair of output shaft holders 106 and 107 holding left and right dummy output shafts (hereinafter referred to as output shafts) 104 and 105 attached to the transmission 100, and an output shaft is automatically taken out from the pair of output shaft holders 106 and 107. And a pair of output shaft connecting mechanisms 108 and 109 attached to the transmission 100.

  The one output shaft connection mechanism 108 is connected to a dynamometer (DC generator) 112 via constant speed devices 110 and 111, and the other output shaft connection mechanism 109 is composed of constant speed devices 113 and 114 and a flywheel 115. Is connected to the dynamometer 112.

  The input shaft drive mechanism 103 includes a drive motor 121 corresponding to an engine of an actual vehicle, an output shaft 122 of the drive motor 121, and an input shaft coupling portion 123 provided at the tip of the output shaft 122. The input shaft connecting portion 123 is connected to the input shaft of the automatic transmission 100.

  The output shaft holders 106 and 107 are arranged so as to face both side portions of the conveyor 102. The output shaft holders 106 and 107 are attached to slide bases 124 and 125 and are slidable along the side surface of the conveyor 102.

  As shown in FIG. 11, the output shaft holders 106 and 107 are formed in a circular shape that rotates around a shaft 131, and six grooves 132 that are substantially semicircular at equal angles in the radial direction on the peripheral surface. Is provided.

  As shown in an enlarged view in FIG. 12, a pair of holder claws 134 and 135 are attached to the inner surfaces of the six grooves 132 so as to be rotatable about shafts 136 and 137 with the open end 133 interposed therebetween. The pair of holder claws 134 and 135 are given a turning force in a direction to close the opening 133 by a spring 138. When the output shaft is pushed in from the opening 133 side, the pair of holder claws 134 and 135 are pushed and spread against the spring force of the spring 138 around the shafts 136 and 137, and the output shaft enters the groove 132. When the output shaft completely enters the groove 132, it is rotated in the closing direction by the force of the spring 138 to prevent the output shaft from dropping from the groove.

  As shown in FIG. 13, the output shaft connecting mechanisms 108 and 109 include a connecting portion 141 that inserts one end portion of the output shaft and spline-couples the output shaft, and a spline shaft that is connected to the connecting portion 141 at one end side. 142, and a slider 143 for sliding the spline shaft 142 to a position for inserting the connecting portion 141 into one end portion of the output shaft and a position for removing the connecting portion 141 from one end portion of the output shaft. The slider 143 is driven by a hydraulic cylinder (not shown).

  When the automatic transmission test apparatus 101 connects the input shaft connecting portion 123 of the input shaft drive mechanism 103 to the input shaft of the automatic transmission 100 and rotates the input shaft by the drive motor 121, the rotation is automatically performed. It is transmitted to the dynamometer 112 via a pair of output shafts 104 and 105 attached to the transmission 100, output shaft connecting mechanisms 108 and 109, constant speed devices 110 and 111, or constant speed devices 113 and 114, and a flywheel 115, Absorbs power while reproducing actual vehicle load conditions.

  When the pair of output shafts 104 and 105 are removed from the automatic transmission 100 and the output shafts 104 and 105 are stored in the grooves 132 and 132 of the output shaft holders 106 and 107, first, as shown in FIG. The pair of output shafts 104 and 105 are slid away from each other by the output shaft connecting mechanisms 108 and 109, and the output shafts 104 and 105 are pulled out from the automatic transmission 100.

  Next, the output shaft holders 106 and 107 are rotated around the shaft 131, and the grooves 132 and 132 for accommodating the extracted output shafts 104 and 105 are opposed to the output shafts 104 and 105, as shown in FIG. Let

  Next, as shown in FIGS. 15 and 16, the output shaft holders 106 and 107 are moved by the slide bases 124 and 125 toward the extracted output shafts 104 and 105, and the output shaft is fitted into the groove 132. Combine. Then, the connecting portion 141 is pulled out from the output shaft.

  When the output shaft is taken out from the output shaft holders 106 and 107 and attached to the automatic transmission 100, the output shaft holders 106 and 107 are removed from the automatic transmission 100 and stored in the output shaft holders 106 and 107. Perform approximately the reverse operation.

Reference patent documents related to the invention of this application include the following.
JP-A-7-311122 Japanese Patent Application No. 2007-315320

By the way, the above-described automatic transmission test apparatus 101 has the following problems.
(1) As shown in FIG. 17, when the end portions of the output shafts 104 and 105 are inserted into the interior 141 a of the connecting portion 141, the end portions of the output shafts 104 and 105 abut against the distal end surface 141 b of the connecting portion 141. Even when a so-called poor connection was caused, this could not be detected.
(2) Since the pair of left and right output shaft holders 106 and 107 that supply the left and right output shafts of the automatic transmission are used separately, the number of parts is increased and the cost is increased. Further, since the pair of left and right output shaft holders 106 and 107 are disposed on both sides of the conveyor 102, a wide installation space is required in the width direction of the conveyor.

  SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned conventional problems, and to detect a coupling failure between an output shaft and a connecting portion with a simple structure and to test an automatic transmission that does not require a large installation space. To provide an apparatus.

  The invention according to claim 1 is a conveyor that conveys an automatic transmission as a workpiece, an input shaft drive mechanism that is connected to an input shaft of the automatic transmission that has been conveyed by the conveyor, and a plurality that is attached to the automatic transmission. An output shaft holder for holding an output shaft of a kind, and an output shaft connection mechanism for taking out the output shaft from the output shaft holder and attaching it to an automatic transmission and connecting the output shaft to a dynamometer, The mechanism includes a connecting portion that inserts one end of the output shaft and spline-couples the output shaft, a spline shaft that has one end connected to the connecting portion and the other end connected to the dynamometer, and slides the spline shaft. And a slider that slides the connecting portion to a position to be inserted into one end portion of the output shaft and a position to be removed from one end portion of the output shaft. In the test apparatus, the connecting portion includes an inner tube portion that is splined by inserting one end portion of the output shaft, and an outer tube portion that is slidably fitted in the axial direction of the output shaft. And a coil spring interposed between the inner cylinder part and the outer cylinder part, and detection means for detecting that the coil spring is compressed.

  According to a second aspect of the present invention, in the automatic transmission testing apparatus according to the first aspect, the dynamometer is positioned and fixed, and the slider is slid and driven by a hydraulic cylinder.

  According to a third aspect of the present invention, in the automatic transmission testing apparatus according to the second aspect, the spline shaft includes a first shaft portion having one end attached to the connecting portion and the slider attached to a central portion. And a second shaft portion having one end connected to the first shaft portion via a constant velocity ball joint and the other end connected to the dynamometer via a spline joint.

  According to a fourth aspect of the present invention, in the automatic transmission testing apparatus according to any one of the first to third aspects, the output shaft holder is provided with first and second holder main bodies that support the left and right output shafts. In addition, it is attached to the lower part of the conveyor so as to be pivotable by a shaft, and rotates around the shaft when the output shaft is taken out or stored, and protrudes from the opening provided in the conveyor to the upper surface side of the conveyor. It was configured to be.

  According to a fifth aspect of the present invention, there is provided a conveyor for conveying an automatic transmission as a workpiece, an input shaft driving mechanism connected to an input shaft of the automatic transmission conveyed by the conveyor, and a plurality of units attached to the automatic transmission. An output shaft holder for holding an output shaft of a kind, and an output shaft connection mechanism for taking out the output shaft from the output shaft holder and attaching it to an automatic transmission and connecting the output shaft to a dynamometer, The mechanism includes a connecting portion for inserting one end portion of the output shaft and spline coupling the output shaft, a spline shaft having one end connected to the connecting portion and the other end connected to the dynamometer, and sliding the spline shaft. And a slider that slides to a position where the connecting portion is inserted into one end portion of the output shaft and a position where the connecting portion is removed from one end portion of the output shaft. In the test apparatus, the dynamometer is movably disposed on a base plate and is movable by a hydraulic cylinder. The spline shaft is attached to the dynamometer and moved together with the dynamometer. A connecting bar extending in parallel with the spline shaft is provided, the tip of the connecting bar is connected to the slider via a coil spring, and the compression of the coil spring is detected by a detecting means.

  According to a sixth aspect of the present invention, in the automatic transmission testing apparatus according to the fifth aspect, the spline shaft includes a first shaft portion having one end attached to the connecting portion and the slider attached to the central portion. The second shaft portion is connected to the first shaft portion via a constant velocity ball joint and the other end is connected to the dynamometer via a shaft mounting portion.

  According to a seventh aspect of the present invention, in the automatic transmission testing apparatus according to the fifth or sixth aspect, the output shaft holder includes first and second holder main bodies that support the left and right output shafts, and It is attached to the lower part of the conveyor so as to be pivotable by a shaft, and is configured to project from the opening provided in the conveyor to the upper surface side of the conveyor when the output shaft is taken out or when the output shaft is stored. did.

(1) In the automatic transmission testing apparatus according to claim 1, when the end of the output shaft is splined to the connecting portion, the ends of the output shafts 4 and 5 are connected to the connecting portion 13 as shown in FIG. When a so-called poor connection occurs due to contact with the front end surface, the coil spring 13c is compressed, and the compression is detected by the detection means, so that a retry is performed based on the detection result. As a result, the end of the output shaft can be securely splined to the connecting portion.
(2) A test apparatus for an automatic transmission according to claim 2, wherein the slider is slid by a hydraulic cylinder without moving the dynamometer, and the connecting portion is inserted into one end portion of the output shaft. It can be moved to a position where it is removed from one end of the output shaft.
(3) The automatic transmission test apparatus according to claim 3 enables the expansion and contraction movement of the spline shaft to be effectively absorbed by the spline joint, thereby enabling smooth movement of the spline shaft.
(4) In the automatic transmission testing apparatus according to claims 4 and 7, since the output shaft holder is provided with the first and second holder main bodies for supporting the left and right output shafts, the left and right output shafts are respectively provided. Compared with the case where a pair of left and right output shaft holders supplied separately are used, the number of parts can be reduced and the apparatus can be downsized. Further, the output shaft holder can be stored in the lower part of the conveyor except when the output shaft is taken out or when the output shaft is stored.
(5) In the automatic transmission testing apparatus according to claim 5, when the end of the output shaft abuts on the front end surface of the connecting portion and a so-called poor connection occurs, a coil spring attached to the end of the connecting bar Is compressed and detected by the detecting means, so that there is no need to incorporate a coil spring in the connecting portion as in the first embodiment. Accordingly, unlike the prior art, the connecting portion is formed as a multi-cylinder structure of the inner cylindrical portion and the outer cylindrical portion, so that the inner cylindrical portion and the outer cylindrical portion need not be spline-coupled, and the configuration of the connecting portion can be simplified. Since it is possible to eliminate the spline coupling portion between the cylindrical portion and the outer cylindrical portion, the generation of noise can be suppressed accordingly.
(6) In the automatic transmission testing apparatus according to claim 6, one end of the second shaft portion constituting the spline shaft is connected to the dynamometer by a shaft mounting portion, and the spline used in the first embodiment is used. Since the joint is not used, generation of noise can be suppressed accordingly.

  Hereinafter, the present invention is divided into (1) overall configuration and operation, (2) input shaft drive mechanism configuration, (2) input shaft drive mechanism configuration, (3) output shaft configuration, and (4) output shaft. The configuration of the holder, (5) the configuration of the output shaft connection mechanism, (6) the action, and (7) other embodiments will be described in this order.

(1) Overall Schematic Configuration and Schematic Action FIG. 1 is a plan view of an automatic transmission testing apparatus 1 according to a first embodiment, and FIG. 2 is a side view. The automatic transmission testing apparatus 1 includes a conveyor 2 that conveys an automatic transmission 100 as a workpiece, an input shaft drive mechanism 3 that is connected to an input shaft of the automatic transmission 100 that has been conveyed by the conveyor 2, and the automatic transmission An output shaft holder 6 that holds several left and right dummy output shafts (hereinafter referred to as output shafts) 4 and 5 attached to the transmission 100, and the left and right output shafts 4 and 5 are automatically taken out from the output shaft holder 6. Left and right output shaft connecting mechanisms 7 and 8 attached to the transmission 100 and dynamometers 9 and 10 connected to ends of the left and right output shaft connecting mechanisms 7 and 8 are provided.

  When the automatic transmission test apparatus 1 rotates the input shaft of the automatic transmission 100 by the input shaft drive mechanism 3, the rotation is caused by the left and right output shafts 4 and 5 attached to the automatic transmission 100, and the output shaft connection mechanism. 7 and 8 are transmitted to the dynamometers 9 and 10 to absorb the power while reproducing the actual vehicle running load conditions.

  The conveyor 2 includes an opening 11 for projecting the output shaft holder 6 from the upper surface of the conveyor, and an automatic transmission support 12 that supports the automatic transmission 100 above the opening 11.

  The output shaft holder 6 is disposed below the conveyor 2 and protrudes from the opening 11 to the upper surface of the conveyor 2 when the output shaft is stored and when the output shaft is attached.

  The output shaft connecting mechanisms 7 and 8 include a connecting portion 13 that inserts one end of the output shaft and spline-couples the output shaft.

  As shown in FIG. 3, the connecting portion 13 includes an inner cylindrical portion 13a into which one end of the output shaft 4 or 5 is inserted and splined, and the inner cylindrical portion 13a is slidable in the axial direction of the output shaft. An outer cylinder part 13b that is spline-coupled, a coil spring 13c that projects the inner cylinder part 13a from the outer cylinder part 13b, and detection means (not shown) that detects that the coil spring 13c is compressed. I have.

  As shown in FIG. 4, when the end of the output shaft 4 or 5 is inserted into the inner cylindrical portion 13 a of the connecting portion 13, the end of the output shaft is placed on the distal end surface of the inner cylindrical portion 13 a of the connecting portion 13. Contact with each other to cause a so-called poor connection, the coil spring 13c is compressed, and the detection means detects the poor connection.

(2) Configuration of Input Shaft Drive Mechanism As shown in FIG. 1, the input shaft drive mechanism 3 includes a drive motor 21 corresponding to an actual vehicle engine, an output shaft 22 driven to rotate by the drive motor 21, And an input shaft connecting portion 23 provided at the tip of the output shaft 22.

  The input shaft drive mechanism 3 is moved in the direction of arrow A so that the input shaft connecting portion 23 is connected to the input shaft of the automatic transmission 100.

(3) Configuration of Output Shaft Configuration As shown in FIG. 4, the output shafts 4, 5 have a spline coupling portion 31 on one end side to the connecting portion 13 and the other end side to the automatic transmission 100. A spline coupling portion 32 is formed. Between the spline coupling portions 31 and 32 is a held portion 33 held by the output shaft holder 6 described in detail below. The held portion 33 is formed between a pair of flanges 34 and 35. In the output shafts 4 and 5, the spline coupling portion 31 on one end side is spline coupled to the connecting portion 13, and the spline coupling portion 32 on the other end side is spline coupled to the output side of the automatic transmission 100.

(4) Configuration of Output Shaft Holder The output shaft holder 6 holds an output shaft that is selected and used according to the type of the automatic transmission 100. When not in use, the output shaft holder 6 is stored under the conveyor 2 so as not to hinder the movement of the conveyor 2 as shown by a solid line in FIG.

  When the output shaft holder 6 is used, that is, when the output shafts 4 and 5 are taken out and attached to the automatic transmission 100 and when the output shafts 4 and 5 are attached to the automatic transmission 100, as shown by a two-dot chain line in FIG. The held output shaft is projected onto the conveyor 2 from the opening 10 provided in the conveyor 2.

  As shown in FIG. 5, the output shaft holder 6 is provided at a base portion 41, a turning arm 43 rotatably attached to the base portion 41 by a shaft 42, and an upper end of the turning arm 43. The first holder body 44 that supports the left output shaft of the left and right output shafts, the second holder body 45 that holds the right output shaft, and the rotating arms 43 to 1, And a motor 46 that rotates the second holder main body portions 44 and 45.

  As shown in FIG. 6, the first and second holder main body portions 44, 45 are formed in an arc shape centering on the shaft 42. The first and second holder main body portions 44 and 45 have six substantially semicircular shapes that fit the held portions 33 in the center of the output shafts 4 and 5 in the radial direction around the shaft 42 on the upper surface. The groove 47 is provided.

  The groove 47 has a pair of holder claws 49 and 50 attached to the inner surface of the groove 47 so as to be rotatable about a shaft 51 with an opening 48 interposed therebetween. The pair of holder claws 49 and 50 are given a turning force in a direction to close the opening 48 by a spring 52. When the held portion 33 of the output shafts 4 and 5 is pushed in from the opening 48 side, the pair of holder claws 49 and 50 are pushed out against the spring 52 around the shaft 51, and the output shaft is Allowing the penetration into the groove 47 and when the output shaft completely enters the groove 47, the spring 52 is rotated in the closing direction by the force of the spring 52 so that the output shaft falls off the groove 47. To prevent.

  The output shaft holder 6 moves the shaft 42 from a state in which the first and second holder main body portions 44 and 45 and the output shafts 4 and 5 indicated by solid lines in FIG. When rotated clockwise about the center, the first and second holder body portions 44 and 45 and the output shafts 4 and 5 are projected on the conveyor 2 as shown by a two-dot chain line in FIG. Become.

(5) Configuration of Output Shaft Connection Mechanism As shown in FIG. 3, the output shaft connection mechanisms 7 and 8 include the connecting portion 13, one end side connected to the connecting portion 13, and the other end side to the dynamometer 9 or 10. The base plate 15 is connected to a position where the spline shaft 14 is connected, and the spline shaft 14 is slid to insert the connecting portion 13 into the spline connecting portion 31 on one end side of the output shafts 4, 5 and to be removed from the spline connecting portion 31. A slider 16 that moves upward and a hydraulic cylinder 17 that slides the slider 16 are provided.

  The connecting portion 13 is movable up and down in the direction approaching and separating from the first and second holder main body portions 44 and 45 (the radial direction of the arc-shaped first and second holder main body portions 44 and 45). It has become. The up / down operation of the connecting portion 13 is performed by moving the output shaft connecting mechanisms 7, 8 through the dynamometer together with the base plate 15 by an output shaft attaching / detaching drive mechanism (not shown).

  The spline shaft 14 includes first and second shaft portions 14a and 14b. One end of the first shaft portion 14a is attached to the connecting portion 13, and a slider 15 is attached to the center portion. One end of the second shaft portion 14 b is connected to the first shaft portion 14 a via a constant velocity ball joint 18, and the other end is connected to the dynamometer 9 or 10 via a spline joint 19. The constant velocity ball joint 18 smoothly transmits power while following up and down movement caused by a tire turning angle or the like.

  As described above, the connecting portion 13 includes the inner cylinder portion 13a into which the spline coupling portion 31 on one end side of the output shaft 4 is inserted and splined, and the inner cylinder portion 13a in the axial direction of the output shafts 4 and 5. An outer cylinder portion 13b slidably coupled to the outer cylinder portion 13b, a coil spring 13c projecting the inner cylinder portion 13a from the outer cylinder portion 13b by a predetermined amount, and detection for detecting that the coil spring 13c is compressed. Means (not shown), and a clamp mechanism (not shown) for clamping the spline coupling portion 31 on one end side of the output shafts 4 and 5 when the spline connecting portion 31 is completely inserted into the inner cylinder portion 13a. I have.

  When the spline coupling portion 31 on one end side of the output shafts 4 and 5 is inserted into the inner cylindrical portion 13a of the connecting portion 13, the tip of the inner cylindrical portion 13a of the connecting portion 13 is inserted as shown in FIG. When the spline coupling portion 31 on one end side of the output shafts 4 and 5 comes into contact with the surface to cause a so-called poor coupling, the coil spring 13c is compressed and the defective coupling is detected by the detection means (not shown). To do.

(6) Operation First, a case where a desired pair of left and right output shafts 4 and 5 are taken out from the output shaft holder 6 and connected to the output side of the automatic transmission 100 will be described.

  A groove 47 that holds the output shafts 4 and 5 to be taken out by rotating the output shaft holder 6 clockwise around the shaft 42 from the storage position indicated by a two-dot chain line in FIG. 7, for example, the leftmost groove 47 is positioned directly above the shaft 42 as shown by the solid line in FIG.

  Next, the connecting portion 13 is lowered vertically by an output shaft attaching / detaching drive mechanism (not shown) so as to face the shaft ends of the output shafts 4 and 5 to be taken out, and then the connecting portion 13 is moved to the output shaft 4. , 5 is moved in the horizontal direction, and the spline coupling portion 31 on one end side of the output shafts 4, 5 is inserted into the inner cylindrical portion 13 a of the connecting portion 13. At this time, as shown in FIG. 4, when the tip end portion of the spline connecting portion 31 abuts on the tip end surface of the inner cylinder portion 13a to cause a so-called poor connection, the coil spring 13c is compressed and connected. Detect defects. Therefore, the tip of the spline coupling portion 31 is completely inserted into the inner cylinder portion 13a by a method such as retrying.

  Next, the connecting portion 13 is raised in the vertical direction by the output shaft attaching / detaching drive mechanism, and the output shafts 4 and 5 are extracted from the grooves 47 of the first and second holder main body portions 44 and 45 of the output shaft holder 6. After that, the output shaft holder 6 is rotated counterclockwise about the shaft 42, and the conveyor 2 is moved after the output shaft holder 6 is stored in the lower portion of the conveyor 2 as shown in FIG. Thus, the output shaft insertion portion 100a of the automatic transmission 100 is opposed to the shaft ends of the output shafts 4 and 5 attached to the connecting portion 13. The connecting portion 13 is slid toward the automatic transmission 100 by the slider 15, and the spline coupling portion 32 at the other end of the output shafts 4 and 5 is inserted into the shaft insertion portion 100a of the automatic transmission 100. To join splines.

  Even in this case, when the tip end portion of the spline coupling portion 31 is not inserted into the shaft insertion portion 100a of the automatic transmission 100 but abuts against the surface of the automatic transmission 100 to cause a so-called poor coupling, The coil spring 13c is compressed to detect a coupling failure. Therefore, the spline coupling portion 32 is completely inserted into the shaft insertion portion 100a of the automatic transmission 100 by a method such as retrying.

  By inserting the spline coupling portion 32 into the shaft insertion portion 100a of the automatic transmission 100, the dynamometer 9 or 10 is connected to the automatic transmission 100 via the output shafts 4 and 5 and the output shaft connection mechanisms 7 and 8. Is done.

  Accordingly, when the input shaft of the automatic transmission 100 is rotated by the input shaft drive mechanism 3, the rotation is transmitted to the dynamometers 9 and 10 via the pair of left and right output shafts 4 and 5 and the output shaft connection mechanisms 7 and 8. It reproduces the actual vehicle running load conditions.

  Next, a case where the pair of left and right output shafts 4 and 5 are extracted from the automatic transmission 100 and returned to the output shaft holder 6 will be described.

  When the pair of output shafts 4 and 5 are removed from the automatic transmission 100, the pair of left and right output shafts 4 and 5 are slid in a direction away from each other by the slider 15 of the output shaft connection mechanisms 7 and 8, and these outputs are output. The shafts 4 and 5 are pulled out from the automatic transmission 100 by the connecting portion 13. The automatic transmission 100 from which the output shafts 4 and 5 are removed is moved by the conveyor 2 to a position where there is no problem in introducing the output shaft holder 6 between the pair of output shafts 4 and 5. The opening 11 provided in 2 is positioned above the output shaft holder 6.

  Next, the output shaft holder 6 is rotated around the shaft 42, and the first and second holder main body portions 44, 45 are projected from the opening 11 onto the conveyor 2, so that the automatic transmission 100 The groove 47 for accommodating the extracted output shafts 4 and 5 is positioned substantially directly below the output shafts 4 and 5. Next, the connecting portion 13 is lowered in the vertical direction by an output shaft attaching / detaching drive mechanism (not shown), and the held portions 33 of the output shafts 4 and 5 are fitted and held in the groove 47. Next, after the connecting portion 13 is slid by the slider 15 of the output shaft connecting mechanisms 7 and 8 in a direction away from each other and pulled out from the output shafts 4 and 5, the connecting portion 13 is moved by the output shaft attaching / detaching drive mechanism. Raise.

  When the other output shafts 4 and 5 are taken out continuously with the storing operation of the output shafts 4 and 5, the output shaft holder 6 is rotated around the shaft 42, and the target output shafts 4 and 5 That is, the groove 47 in which the output shafts 4 and 5 to be pulled out are accommodated is positioned almost directly below the connecting portion 13. Next, after the connecting portion 13 is lowered in the vertical direction by an output shaft attaching / detaching drive mechanism (not shown) and opposed to the shaft ends of the output shafts 4 and 5 to be taken out, the connecting portion 13 is connected. Is moved in the horizontal direction toward the output shafts 4 and 5, and the spline coupling portion 31 on one end side of the output shafts 4 and 5 is inserted into the inner cylinder portion 13 a of the connecting portion 13. Then, the connecting portion 13 is lifted in a direction away from the first and second holder main body portions 44 and 45 by the output shaft attaching / detaching drive mechanism, and the first and second holder main body portions 44 and 45 are The output shafts 4 and 5 are pulled out from the groove 47. The output shafts 4 and 5 are connected to the automatic transmission 100 by repeating the same operation as described above.

(7) Other Embodiments In another embodiment (hereinafter referred to as a second embodiment), the number of spline coupling portions of the output shaft connecting mechanism is reduced to suppress noise generation.

  The main difference between the first embodiment and the second embodiment is that a coil spring for detecting a coupling failure between the output shafts 4 and 5 and the connecting portion 13 is arranged outside the connecting portion, and the dynamometer is mounted on the base plate. The dynamometer is configured to be moved by a hydraulic cylinder.

  FIG. 9 shows the output shaft connecting mechanisms 7 and 8 of the second embodiment. The output shaft connecting mechanisms 7 and 8 of the second embodiment include a connecting portion 61, a spline shaft 62, a slider 64 that slides on the slide base 63, a hydraulic cylinder 65 that slides the slider 64, and the output shaft 4. , 5 and the coupling portion 13 and the like, and a coil spring 66 for detecting a poor connection, and a constant velocity ball joint 67 are provided.

  The connecting portion 61 has a single cylindrical structure, whereas the connecting portion 13 of the first embodiment has a double structure of the inner cylindrical portion 13a and the outer cylindrical portion 13b. 5 is configured to insert a spline coupling portion 31 on one end side thereof and to perform spline coupling.

  The spline shaft 62 includes first and second shaft portions 62a and 62b. One end of the first shaft portion 62a is attached to the connecting portion 61, and a slider 64 is attached to the center portion. One end of the second shaft portion 62 b is connected to the first shaft portion 62 a via the constant velocity ball joint 67, and the other end is connected to the dynamometer 9 or 10 via a shaft attachment portion 68. . The dynamometer 9 or 10 is slidably provided on a base plate 69.

  The hydraulic cylinder 65 has a piston rod 65 a connected to the dynamometer 9 or 10 via a connecting arm 70, and slides the spline shaft 62 together with the dynamometer 9 or 10.

  The dynamometer 9 or 10 is provided with a connecting rod 71 in parallel with the spline shaft 62. The distal end of the connecting rod 71 is connected to the slider 64 via the coil spring 66.

  Next, the operation of the output shaft connection mechanisms 7 and 8 of the second embodiment will be described. The connecting portion 61 is slid toward the output shaft holder 6 by the hydraulic cylinder 64, and the spline connecting portion 31 at one end of the output shafts 4 and 5 is inserted into the connecting portion 61 for spline connection. In this case, when the spline coupling portion 31 on one end side of the output shafts 4 and 5 abuts on the front end surface of the coupling portion 61 to cause a so-called poor coupling, the coil spring 66 is compressed and the poor coupling is caused. To detect. Accordingly, the spline coupling portion 31 is completely inserted into the connecting portion 61 by a method such as retrying.

  The output shaft connecting mechanisms 7 and 8 of the second embodiment are configured as described above, and eliminate the spline coupling portion between the inner cylinder portion 13a and the outer cylinder portion 13b of the connecting portion 13 of the first embodiment. Can do. Further, since the spline joint 19 of FIG. 3 is not required, the spline joint portion of the spline joint 19 is also eliminated, so that the number of spline joint portions can be halved compared to the output shaft connection mechanisms 7 and 8 of the first embodiment. Thus, the generation of noise can be suppressed. Since the configuration other than the output shaft connecting mechanisms 7 and 8 is the same as that of the first embodiment, a duplicate description is omitted.

FIG. 3 is a plan view of the automatic transmission testing device according to the first embodiment. 1 is a side view of an automatic transmission testing device according to a first embodiment. The enlarged view of an output-shaft connection mechanism. Sectional drawing which shows the state which caused the coupling failure with the output shaft and the connection part. A is a front view of the output shaft holder, and B is a plan view of the output shaft holder. A is a side view of an output shaft holder, and B is an enlarged view of a groove portion of the output shaft holder. Explanatory drawing which shows an effect | action. Explanatory drawing which shows an effect | action. Explanatory drawing of another Example. The top view of the testing apparatus of the conventional automatic transmission. The front view of the conventional output shaft holder. The enlarged view of the groove part of the conventional output shaft holder. Action | operation explanatory drawing of the testing apparatus of the conventional automatic transmission. Action | operation explanatory drawing of the testing apparatus of the conventional automatic transmission. Action | operation explanatory drawing of the testing apparatus of the conventional automatic transmission. Action | operation explanatory drawing of the testing apparatus of the conventional automatic transmission. Sectional drawing which shows a problem.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Automatic transmission test device 2 ... Conveyor 3 ... Input shaft drive mechanism 4, 5 ... Output shaft 6 ... Output shaft holder 7, 8 ... Output shaft connection mechanism 9, 10 ... Dynamometer 11 ... Opening 12 ... Automatic transmission Machine support 13 ... Connecting part 13a ... Inner cylinder part 13b ... Outer cylinder part 13c ... Coil spring 14 ... Spline shaft 15 ... Slide table 16 ... Slider 17 ... Hydraulic cylinder 18 ... Constant velocity ball joint 19 ... Spline joints 31, 32 ... Spline coupling part of output shaft 33 ... Holded part 41 ... Base part of output shaft holder 42 ... Shaft 44 ... First holder main body part 45 ... Second holder main body part 47 ... Groove 61 ... Connecting part 62 ... Spline shaft 63 ... Slide base 64 ... Slider 65 ... Hydraulic cylinder 66 ... Coil spring 67 ... Constant velocity ball joint 68 ... Shaft mounting 69 ... base plate 70 ... connecting arms 71 ... connecting rod 100 ... automatic transmission

Claims (7)

A conveyor that conveys an automatic transmission as a workpiece, an input shaft drive mechanism that is connected to the input shaft of the automatic transmission that has been conveyed by the conveyor, and a plurality of types of output shafts that are attached to the automatic transmission are held. An output shaft holder, and an output shaft connecting mechanism for taking out the output shaft from the output shaft holder and attaching it to the automatic transmission and connecting the output shaft to a dynamometer,
The output shaft connecting mechanism includes a connecting portion for inserting one end portion of the output shaft and spline coupling the output shaft, a spline shaft having one end connected to the connecting portion and the other end connected to the dynamometer, In a test apparatus for an automatic transmission, comprising: a slider that slides a spline shaft to move the connecting portion to a position at which one end of the output shaft is inserted and a position at which the connecting portion is removed from one end of the output shaft.
The connecting portion includes an inner cylinder portion into which one end portion of the output shaft is inserted and splined, an outer cylinder portion in which the inner cylinder portion is slidably fitted in the axial direction of the output shaft, and the inner cylinder A test apparatus for an automatic transmission, comprising: a coil spring interposed between the outer cylinder portion and the outer cylinder portion; and detection means for detecting that the coil spring is compressed. 2. The automatic transmission test apparatus according to claim 1, wherein the dynamometer is positioned and fixed, and the slider is slid and driven by a hydraulic cylinder. One end of the spline shaft is attached to the connecting portion, the slider is attached to the central portion, and one end is connected to the first shaft portion via a constant velocity ball joint, and the other end And a second shaft portion connected to the dynamometer via a spline joint. 3. The automatic transmission testing device according to claim 1, wherein the second shaft portion is connected to the dynamometer via a spline joint. The output shaft holder includes first and second holder main bodies that support the left and right output shafts, and is rotatably attached to the lower portion of the conveyor. The automatic transmission testing device according to any one of claims 1 to 3, wherein the automatic transmission testing device rotates around the shaft during storage and protrudes from an opening provided in the conveyor to an upper surface side of the conveyor. A conveyor that conveys an automatic transmission as a workpiece, an input shaft drive mechanism that is connected to the input shaft of the automatic transmission that has been conveyed by the conveyor, and a plurality of types of output shafts that are attached to the automatic transmission are held. An output shaft holder, and an output shaft connecting mechanism for taking out the output shaft from the output shaft holder and attaching it to the automatic transmission and connecting the output shaft to a dynamometer,
The output shaft connecting mechanism includes a connecting portion for inserting one end portion of the output shaft and spline coupling the output shaft, a spline shaft having one end connected to the connecting portion and the other end connected to the dynamometer, In a test apparatus for an automatic transmission comprising: a slider that slides a spline shaft to slide a connecting portion into one end of an output shaft; and a slider that slides to a position to be removed from one end of the output shaft.
The dynamometer is movably disposed on a base plate and driven by a hydraulic cylinder, and the spline shaft is attached to the dynamometer and moves with the dynamometer,
The dynamometer is provided with a connecting bar extending in parallel with the spline shaft, the tip of the connecting bar is connected to the slider via a coil spring, and the compression of the coil spring is detected by a detecting means. Automatic transmission testing device characterized by One end of the spline shaft is attached to the connecting portion, the slider is attached to the central portion, and one end is connected to the first shaft portion via a constant velocity ball joint, and the other end The automatic transmission testing device according to claim 5, further comprising a second shaft portion connected to the dynamometer via a shaft mounting portion. The output shaft holder includes first and second holder main bodies that support the left and right output shafts, and is rotatably attached to the lower portion of the conveyor. The automatic transmission testing device according to claim 5 or 6, wherein the automatic transmission testing device rotates around the shaft during storage and protrudes from an opening provided in the conveyor to an upper surface side of the conveyor.

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