JP2015205627A - Shift operation device of transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress that foreign matters intrude into a groove into which a protrusion formed at an external spherical face of a base end part of a shift lever is inserted, and the operability of the shift lever is lowered resulting from the intrusion of the foreign matters.SOLUTION: A shift lever device comprises a cylindrical sheet socket 12 which is attached to an attachment hole 11 of a base plate 10, and receives an external spherical face of a ball stud 14 of a shift lever 13 by an internal spherical face sheet 22 arranged in the sheet socket 12. A protrusion 15 formed at the external spherical face of the ball stud 14 is inserted into (engaged with) a groove 31 of the sheet socket 12. A cover 32 for covering upper parts of the groove 31 and the protrusion 15 is formed at the sheet socket 12. A salient part 34 of the cover 32 is inserted into a recess 29 of the base plate 10. An opposing face for preventing the intrusion of foreign matters into the groove is formed of an inside face of the recess 29 and an outside face of the salient part 34.

Description

  The present invention relates to a shift operation device for a transmission.

  As a shift operation device of a transmission, as shown in Patent Document 1, a device that supports a shift lever so as to be tiltable by a ball slide bearing is known. The shift operating device includes a cylindrical bearing member attached to a mounting hole of a base member, and receives an outer spherical surface of a base end portion of a shift lever by an inner spherical sheet provided inside the bearing member. It has become. Further, in the shift operation device, a protrusion is formed on the outer spherical surface of the base end portion of the shift lever, while a groove that engages with the protrusion is formed in the bearing member, and the protrusion and the groove are used in the direction around the axis of the shift lever. Torsional rotation is regulated.

JP2012-131305A

  By the way, in the shift operation device, foreign matter enters the groove from above, and the foreign matter further enters between the outer spherical surface and the inner spherical sheet, so that the operability of the shift lever may be lowered.

  An object of the present invention is to provide a transmission shift that can prevent foreign matter from entering a groove into which a protrusion formed on the outer spherical surface of the base end portion of the shift lever is inserted, resulting in a decrease in operability of the shift lever. It is to provide an operating device.

Hereinafter, means for solving the above-described problems and the effects thereof will be described.
A shift operation device for a transmission that solves the above problem includes a cylindrical bearing member that is attached to an attachment hole of a base member, and a base end portion of a shift lever by an inner spherical sheet provided inside the bearing member. It has a structure that receives the outer spherical surface. The protrusion formed on the outer spherical surface of the base end portion of the shift lever is engaged with the groove by being inserted into the groove formed in the bearing member. The upper part of these grooves and protrusions is covered with a cover provided on the bearing member and engaged with the base member. For this reason, the foreign matter enters the groove from above by the cover. The cover is formed with a convex portion protruding toward the base member, while the base member is formed with a convex portion protruding toward the cover. And the engaging part of a cover and a base member is formed by arrange | positioning in the position where the side surface of the convex part of a cover and the side surface of the convex part of a base member oppose. Therefore, the engagement portion between the cover and the base member is formed with a facing surface that prevents foreign matter from entering the groove by the side surface of the convex portion of the cover and the side surface of the convex portion of the base member. . This opposing surface (side surfaces of the two convex portions) prevents foreign matter from entering the groove through the engaging portion between the cover and the base member. This is due to the foreign matter entering the groove. Therefore, it is possible to suppress the deterioration of the operation performance of the shift lever.

The disassembled perspective view which shows the structure of the shift operation apparatus of a transmission. 1 is a schematic diagram schematically showing a configuration of a shift gate provided in the apparatus. The perspective view which shows the seat socket of the apparatus. The top view which shows the sheet | seat socket. Sectional drawing which shows the sheet | seat socket attached to the attachment hole of the apparatus, and its periphery. (A) is sectional drawing which expands and shows the base plate of the same apparatus, a seat socket, and a ball stud, (b) is sectional drawing which looked at the shift operation apparatus of (a) from the arrow AA direction. The expanded sectional view which shows the part which a cover and a baseplate engage. The expanded sectional view which shows the other example of the part which a cover and a baseplate engage.

Hereinafter, a first embodiment of a shift operation device for a transmission will be described with reference to FIGS.
The shift operation device shown in FIG. 1 includes a base plate 10 as a base member that is fixed to a passenger compartment and serves as a base (base) of the device. The base plate 10 is fixed to the floor or the like of the passenger compartment with bolts or the like. A substantially cylindrical mounting hole 11 is formed in the base plate 10. A seat socket 12 having a substantially cylindrical shape is attached to the attachment hole 11.

  A spherical ball stud 14 provided at the base end portion of the shift lever 13 is engaged with the seat socket 12. The shift lever 13 is supported so as to be tiltable with respect to the base plate 10 by a spherical plain bearing having the ball stud 14 as a spherical axis and the seat socket 12 as a bearing member. The ball stud 14 is provided with a projection 15 so as to protrude rearward of the driver. The protrusion 15 is for restricting torsional rotation of the ball stud 14 in the direction around the axis of the shift lever 13.

  A control lever 16 is integrally provided on the shift lever 13 so as to be tiltable. A shift cable 17 is connected to the control lever 16. The shift lever 13 is connected to the automatic transmission through the shift cable 17.

  FIG. 2 shows an example of the shift gate 18 that guides the tilting of the shift lever 13. In the shift gate 18 shown in the figure, three operation paths, a shift operation path 19, a manual operation path 20, and a select operation path 21, are formed as operation paths for guiding the shift lever 13. The shift operation path 19 is extended in the front-rear direction of the driver (hereinafter referred to as a shift direction) while being bent in a staircase shape. Further, the manual operation path 20 is linearly extended in the shift direction on the right side of the shift operation path 19 in the figure. The shift operation path 19 and the manual operation path 20 are connected through a select operation path 21 that extends in the left-right direction of the driver (hereinafter referred to as a select direction).

  In the shift operation path 19, as the operation position of the shift lever 13, the parking operation position (P), the reverse operation position (R), the neutral operation position (N), and the drive operation position (D) are sequentially arranged from the front side of the driver. ) Four operation positions are set. Further, in the manual operation path 20, three operation positions of an upshift operation position (+), a manual operation position (M), and a downshift operation position (−) are set in order from the front side of the driver. . The select operation path 21 is formed so as to connect the drive operation position (D) of the shift operation path 19 and the manual operation position (M) of the manual operation path 20.

  In the shift operation device configured as described above, when the shift lever 13 is operated along the shift operation path 19, the operation is transmitted to the automatic transmission through the shift cable 17. Then, the shift operation of the automatic transmission is performed according to the operation position of the shift lever 13 positioned by the operation.

  On the other hand, when the shift lever 13 is operated along the select operation path 21 from the drive operation position (D) to the manual operation position (M), the driver can perform the shift operation of the automatic transmission more freely. Transition to mode. In the manual operation mode, when the shift lever 13 is operated from the manual operation position (M) to the upshift operation position (+) along the manual operation path 20, as long as it is permitted in view of the traveling state of the vehicle at that time. , The shift stage of the automatic transmission is increased by one stage. Further, when the shift lever 13 is operated from the manual operation position (M) to the downshift operation position (−), the shift stage of the automatic transmission is one step as long as it is allowed in view of the traveling state of the vehicle at that time. Can only be lowered.

  In such a manual operation mode, the shift lever 13 is operated to the upshift operation position (+) and the downshift operation position (−). When these operations are performed, a predetermined portion of the shift lever 13 pushes a select switch (not shown). Is detected. A force for automatically moving the lever 13 back to the manual operation position (M) is applied to the shift lever 13 operated to the upshift operation position (+) and the downshift operation position (−). It has come to be.

  Next, details of the seat socket 12 constituting the bearing member of the shift lever 13 will be described. In the following, the end of the seat socket 12 in the protruding direction of the shift lever 13 is described as the upper end of the seat socket 12, and the end of the seat socket 12 in the opposite direction is described as the lower end of the seat socket 12.

  FIG. 3 shows a perspective structure of the seat socket 12. As shown in the figure, an inner spherical sheet 22 that receives the outer spherical surface of the ball stud 14 of the shift lever 13 shown in FIG. 1 is formed in the seat socket 12. A circular opening 23 is formed in the upper part of the inner spherical sheet 22 in the figure, and the shift lever 13 protrudes from the opening 23. The shift lever 13 is supported so as to be tiltable around the center of the inner spherical sheet 22 through sliding contact between the inner spherical sheet 22 and the outer spherical surface of the ball stud 14.

  The seat socket 12 includes a plurality of (three in this example) first pieces 12a, 12b, and 12c arranged in the circumferential direction, and a first piece that is smaller than and adjacent to the first pieces 12a, 12b, and 12c. It is formed by one second piece 12d located between 12a and 12b. Each of the plurality of first pieces 12a, 12b, 12c and one second piece 12d has a claw portion 24 that can be elastically displaced in the radial direction of the seat socket 12 with respect to the outer shell on the side periphery of the seat socket 12. At least one is formed.

  As shown in FIG. 4, in this shift operation device, the four claw portions 24 respectively formed on the plurality of first pieces 12 a, 12 b, 12 c are provided so as to be evenly positioned in the circumferential direction of the seat socket 12. ing. The four claw portions 24 are provided at a position 45 degrees diagonally forward and left and 45 degrees diagonally rearward and left and right, respectively. On the other hand, one claw portion 24 is provided on the second piece 12d so as to be positioned in front of the driver. Of the first pieces 12a, 12b, 12c and the second piece 12d for forming the seat socket 12, corresponding to the protrusion 15 of the ball stud 14 (FIG. 1) inserted into the inner spherical sheet 22 of the seat socket 12. A groove 31 is formed in the positioned piece (first piece 12c). When the ball stud 14 is inserted into the inner spherical sheet 22, the protrusion 15 is inserted into the groove 31.

  FIG. 5 shows a cross-sectional structure of the seat socket 12 and its periphery when attached to the attachment hole 11. A fitting portion 33 that is tightly fitted to the peripheral edge of the lower end opening of the mounting hole 11 is provided at one end (the lower end in this example) of the mounting hole 11 in the outer peripheral shell on the side periphery of the seat socket 12. It has been. Further, a fixing portion 27 is formed at a position corresponding to the claw portion 24 in the upper end opening periphery of the mounting hole 11 so as to protrude toward the inner peripheral side. When the seat socket 12 is attached, the claw portion 24 of the first pieces 12a, 12b, 12c (only 12a, 12b is shown) abuts on the inner peripheral side of the distal end portion of the fixing portion 27 while being pressed by its own elasticity. ing. The sheet socket 12 is fixed to the mounting hole 11 by the claw portion 24 and the fitting portion 33.

  FIG. 6 shows a state in which the ball stud 14 of the shift lever 13 is supported in the inner spherical sheet 22 of the seat socket 12. 6A is an enlarged sectional view around the base plate 10, the seat socket 12, and the ball stud 14 in the shift operation device, and FIG. 6B shows the shift operation device in FIG. It is sectional drawing seen from A direction.

  The protrusion 15 of the ball stud 14 is inserted into the groove 31 of the first piece 12c and is in contact (engaged) with the inner wall of the groove 31 in this state. The torsional rotation of the ball stud 14 in the outer peripheral direction of the seat socket 12 is restricted by the engagement between the protrusion 15 and the groove 31. A portion around the groove 31 in the seat socket 12 is inserted into a relief portion 28 formed in the base plate 10.

  A cover 32 is formed on the first piece 12c to cover the groove 31, the protrusion 15 inserted into the groove 31, and the clearance 28. The cover 32 connects both ends in the outer peripheral direction of the seat socket 12 in the groove 31 (FIG. 4) of the first piece 12c. By forming the cover 32 in this way, the strength around the groove 31 in the first piece 12c is increased. The cover 32 is formed to extend toward the outer spherical surface so that the end of the ball stud 14 is brought into contact with the outer spherical surface of the ball stud 14. Further, the cover 32 is in a direction away from the outer peripheral surface so that the end opposite to the ball stud 14 is engaged with the vicinity of the bottom wall (the right wall in FIG. 6A) of the relief portion 28 in the base plate 10. Are formed so as to extend substantially horizontally.

FIG. 7 shows an enlarged portion where the cover 32 and the base plate 10 are engaged.
As shown in the figure, the end of the cover 32 opposite to the ball stud 14 (the right end in the figure) extends to a position corresponding to the upper surface of the base plate 10 and is bent downward by bending at that position. A protruding portion 34 is formed. The convex portion 34 functions as a convex portion protruding toward the base plate 10 side. A concave portion 29 is formed at a position corresponding to the convex portion 34 on the upper surface of the base plate 10. A portion of the base plate 10 closer to the ball stud 14 than the concave portion 29 (left side in the figure) functions as a convex portion protruding toward the cover 32 side.

  Then, the cover 32 and the base plate 10 are engaged by inserting the convex portion 34 of the cover 32 into the concave portion 29 of the base plate 10. Further, by inserting the convex portion 34 into the concave portion 29, the side surface of the convex portion of the cover 32 (the left outer surface of the convex portion 34 in FIG. 7) and the side surface of the convex portion of the base plate 10 (of the concave portion 29 in FIG. 7). It is arranged at a position facing the left inner surface. And the engaging part of the cover 32 and the baseplate 10 is formed by arrange | positioning in the position where the left outer surface of the convex part 34 and the left inner surface of the recessed part 29 oppose. The engaging portion is formed with a facing surface that prevents foreign matter from entering the groove 31 (see FIG. 6A) by the left outer surface of the convex portion 34 and the left inner surface of the concave portion 29. The

  7 shows an example in which a predetermined gap is formed between the outer surface of the convex portion 34 and the inner surface of the concave portion 29. The outer surface of the convex portion 34 and the inner surface of the concave portion 29 are You may touch.

Next, the operation of the shift operation device of the transmission will be described.
In a state where the ball stud 14 of the shift lever 13 is supported in the inner spherical sheet 22 of the seat socket 12, the protrusion 15 of the ball stud 14 is inserted into the groove 31 of the first piece 12c. The upper part of the groove 31 and the protrusion 15 at this time is covered with a cover 32 formed on the first piece 12c. Therefore, the cover 32 suppresses foreign matter from entering the groove 31 from above. Further, by disposing the left outer surface of the convex portion 34 in the cover 32 and the left inner surface of the concave portion 29 in the base plate 10, an engaging portion between the cover 32 and the base plate 10 is formed. The left outer surface of the convex portion 34 and the left inner surface of the concave portion 29 prevent foreign substances from entering the groove 31 through the engaging portion between the cover 32 and the base plate 10.

According to the embodiment described in detail above, the following effects can be obtained.
(1) In a state where the ball stud 14 of the shift lever 13 is supported in the inner spherical sheet 22 of the seat socket 12, the groove 31 and the protrusion 15 are covered with the cover 32, so that the foreign matter enters the groove 31 from above. Can be prevented from entering.

  (2) The end of the cover 32 on the ball stud 14 side is in contact with the outer spherical surface of the ball stud 14. For this reason, it is more effective for foreign matter to enter the groove 31 from above the groove 31 and the protrusion 15 via the end of the cover 32 on the ball stud 14 side and the outer spherical surface of the ball stud 14. Can be suppressed.

  (3) When the convex portion 34 of the cover 32 is inserted into the concave portion 29 of the base plate 10, the cover 32 and the base plate are arranged by the left outer surface of the convex portion 34 and the left inner surface of the concave portion 29 facing each other. 10 is formed. In the engaging portion, a facing surface that prevents entry of foreign matter into the groove 31 is formed by the left outer surface of the convex portion 34 and the left inner surface of the concave portion 29. The opposing surfaces (the left side surface of the convex portion 34 and the left inner side surface of the concave portion 29) prevent foreign matter from entering the groove 31 through the engagement portion between the cover 32 and the base plate 10. Accordingly, it is possible to prevent the operation performance of the shift lever 13 from being deteriorated due to the entry of foreign matter into the groove 31.

  (4) As described above, since foreign matter can be prevented from entering the groove 31 from the outside, the foreign matter is inserted between the outer spherical surface of the ball stud 14 and the inner spherical sheet 22 of the seat socket 12 from the groove 31. Can also be prevented from entering. For this reason, it can suppress that the said foreign material becomes sliding resistance with the said outer spherical surface and the inner spherical surface sheet 22 at the time of operating the shift lever 13, and suppresses the operativity fall of the shift lever 13 by the sliding resistance. Can do.

  (5) If the shift lever 13 is operated with foreign matter entering between the outer spherical surface of the ball stud 14 and the inner spherical sheet 22 of the seat socket 12, the outer peripheral surface and the inner spherical seat are caused by the foreign matter. The amount of wear with 22 increases. However, since foreign matter can be prevented from entering between the outer spherical surface of the ball stud 14 and the inner spherical sheet 22 of the seat socket 12, the outer circumferential surface of the ball stud 14 and the inner spherical sheet 22 of the seat socket 12 are It is possible to suppress an increase in the amount of wear between the two.

  (6) Since the cover 32 is integrally formed with the seat socket 12, the foreign matter enters the groove 31 without newly assembling a part for preventing the foreign matter from entering the groove 31 in the shift operation device. Can be suppressed. Therefore, the manufacturing cost of the shift operation device is suppressed while suppressing the entry of the foreign material into the groove 31 as much as it is not necessary to newly install a part for suppressing the foreign material into the groove 31 in the shift operation device. Can be kept low.

In addition, the said embodiment can also be changed as follows, for example.
As shown in FIG. 8, the step portion 30 is formed at a position corresponding to the convex portion 34 of the cover 32 on the upper surface of the base plate 10. In this case, a portion of the base plate 10 closer to the ball stud 14 than the stepped portion 30 (left side in the figure) functions as a convex portion protruding toward the cover 32 side. And the engaging part of the cover 32 and the baseplate 10 is formed by arrange | positioning both so that the side surface of the step part 30 and the left outer surface in the figure of the said convex part 34 may oppose. In the engaging portion, a facing surface that prevents entry of foreign matter into the groove 31 is formed by the left outer surface of the convex portion 34 and the side surface of the step portion 30.

  8 shows an example in which a predetermined gap is formed between the left side surface of the convex portion 34 and the side surface of the stepped portion 30, but the left side surface of the convex portion 34 and the stepped portion 30 are shown. It may be in contact with the side surface.

It is not essential that the end portion of the cover 32 on the ball stud 14 side is in contact with the outer spherical surface of the ball stud 14, and the end portion may be separated from the outer spherical surface.
The pattern of the shift gate 18, the connection structure of the shift lever 13 and the automatic transmission, the support structure of the shift lever 13 and the like can be arbitrarily changed.

  DESCRIPTION OF SYMBOLS 10 ... Base plate, 11 ... Mounting hole, 12 ... Seat socket, 12a-12c ... 1st piece, 12d ... 2nd piece, 13 ... Shift lever, 14 ... Ball stud, 15 ... Projection, 16 ... Control lever, 17 ... Shift Cable, 18 ... Shift gate, 19 ... Shift operation path, 20 ... Manual operation path, 21 ... Select operation path, 22 ... Inner spherical sheet, 23 ... Opening, 24 ... Nail part, 27 ... Fixing part, 28 ... Escape part, 29 ... concave portion, 30 ... stepped portion, 31 ... groove, 32 ... cover, 33 ... fitting portion, 34 ... convex portion.

Claims (1)

In a shift operation device of a transmission in which a cylindrical bearing member is attached to a mounting hole of a base member, and an outer spherical surface of a base end portion of a shift lever is received by an inner spherical sheet provided inside the bearing member.
A protrusion formed on the outer spherical surface of the base end of the shift lever;
A groove formed in the bearing member and into which the protrusion is inserted;
A cover that is provided on the bearing member so as to cover the groove and the protrusion, and engages with the base member;
With
The cover is formed with a convex portion projecting toward the base member side, while the base member is formed with a convex portion projecting toward the cover side, and the side surface of the convex portion of the cover and the A shift operation device for a transmission, wherein an engaging portion between the cover and the base member is formed by being disposed at a position where the side surface of the convex portion of the base member faces.