JP2010143266A - Parking device structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a parking device structure adapted to achieve a parking device sub-assembly, facilitating the assembling operation of the parking device itself to be the sub-assembly, and easily mounting the sub-assembly in a body. <P>SOLUTION: This parking device structure includes a lock pole 21 engaged to a parking gear 31, a parking rod 14 for engaging the lock pole 21 to the parking gear 31, a parking lever 15 for moving the parking rod 14 and an actuator 17 for driving the parking lever 15, as parts. The parking device structure further includes the parking lever 15 rotatably held in a mounting hole formed in a flat plate shaped locking member 11, the parking rod 14 having one end connected to the parking lever 15, and a pair of guide projecting parts 11a and 11b formed in the locking member 11 by pressing to linearly guide the parking rod 14. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention includes a lock pawl that engages with a parking gear, a parking rod that engages the parking pawl with the parking gear, a parking lever that moves the parking rod, and an actuator that drives the parking lever. The present invention relates to a parking device structure.

Patent Document 1 discloses a parking structure that is a part of a parking rod and that positions a support actuator formed with a slope on which a cam rides, by sandwiching it between a transaxle case and a side cover.
Thus, it is disclosed that the positioning plate for positioning and the mounting bolts can be eliminated.
Patent Document 2 discloses a technique for improving the assembly workability by using a parking assembly as a bracket assembly and making it a sub-assembly.

Japanese Utility Model Publication No. 06-078132 Japanese Unexamined Patent Publication No. 08-216842

However, the conventional parking structure has the following problems.
That is, in the technique described in Patent Document 1, depending on the model to be applied, it is necessary to design the sandwiched portion of the transaxle case and the side cover for sandwiching the support actuator each time. There is a problem in terms of assembly man-hours. Moreover, since each component is assembled to a transaxle case or the like, there remains a problem of poor workability.
On the other hand, in the technique of Patent Document 2, the work of attaching the bracket assembly itself is easy, but the structure of the bracket assembly is complicated, and there is a problem that the efficiency of the work of assembling the bracket assembly itself is poor.

In order to provide means for solving these problems, the present applicant filed a patent application of Japanese Patent Application No. 2008-146903.
However, the technology of Japanese Patent Application No. 2008-146903 has the following problems.
(1) A sleeve for linearly moving the parking rod in a direction perpendicular to the mounting plate is required. Since the sleeve has a cylindrical shape and is provided with a hollow portion for guide or the like, there is a problem that the manufacturing cost is increased. In addition, since the sleeve is press-fitted into the mounting plate and fixed, a press-fitting step is required, resulting in a cost increase.
(2) Since it has the 1st flat plate and the 2nd flat plate perpendicular | vertical to a 1st flat plate, there were multiple directions which attach each component, and the assembly property of the subassembly was not good. Further, when compared with the flat plate shape, there is a case where the second flat plate may get in the way when attached to the main body, and there is a problem that the conditions for attaching the sub-assembly to the main body are restricted.

  Therefore, the present invention has been made to solve the above-described problems. The parking device is sub-assembled and the sub-assembly parking device itself can be easily assembled, and the sub-assembly is attached to the main body. An object is to provide an easy parking device structure.

In order to achieve the above object, a parking apparatus structure according to the present invention has the following configuration.
(1) A lock pole that engages with the parking gear, a parking rod that engages the lock pole with the parking gear, a parking lever that moves the parking rod, and an actuator that drives the parking lever A parking device structure having a parking lever rotatably held in a mounting hole formed in a flat plate, a parking rod having one end coupled to the parking lever, and a parking rod formed by pressing on the flat plate A pair of guide protrusions for linear guide.
(2) In the parking device structure described in (1), a detent spring mounting portion formed by bending the flat plate on the flat plate is formed by pressing, and the detent spring is formed on the detent spring mounting portion with respect to the plane. It can be mounted from parallel directions.

(3) In the parking device structure described in (2), the lock pawl, the parking rod, the parking lever, and the actuator are assembled from one direction perpendicular to the flat plate. .
(4) In the parking device structure described in (1), the detent spring, the lock pawl, the parking rod, the parking lever, and the actuator are assembled from both sides perpendicular to the flat plate. Features.

The operation and effect of the parking device structure of the present invention having the above configuration will be described.
(1) According to the parking device structure of the present invention, the lock pawl that engages the parking gear, the parking rod that engages the lock pawl with the parking gear, the parking lever that moves the parking rod, and the parking A parking device structure having an actuator for driving a lever as a component, a parking lever rotatably held in a mounting hole formed in a flat plate, a parking rod having one end coupled to the parking lever, and a flat plate Since it has a pair of guide convex portions for linearly guiding the parking rod, which is formed by press working, a sleeve for guiding the parking rod is not required, so that the cost can be reduced. That is, not only can the manufacturing cost of the sleeve itself be reduced, but there is no need to fix the sleeve to the mounting plate by press-fitting or the like, so that the cost can be doubled.
(2) Further, according to the parking device structure of the present invention, the flat plate is formed with a detent spring mounting portion obtained by bending the flat plate vertically, and the detent spring is formed on the flat surface at the detent spring mounting portion. Since it is characterized by being mounted from a parallel direction, the detent spring mounting bracket, which has been conventionally required, is not required, so the number of parts can be reduced and the cost can be reduced.

(3) Further, according to the parking device structure of the present invention, the lock pawl, the parking rod, the parking lever, and the actuator are assembled from one direction perpendicular to the flat plate. As a result, it is easy to automate the assembly of the sub-assembly, increasing the production efficiency and reducing the cost. Moreover, since the shape of a subassembly is flat form, there exists an advantage which is easy to attach with respect to a main body.
(4) According to the parking device structure of the present invention, the detent spring, the lock pole, the parking rod, the parking lever, and the actuator are assembled from both sides perpendicular to the flat plate, Since all the parts can be assembled only from both directions perpendicular to the flat plate, it is easy to automate the assembly of the subassembly, increase the production efficiency, and reduce the cost. Moreover, since the shape of a subassembly is flat form, there exists an advantage which is easy to attach with respect to a main body.

An embodiment of a parking apparatus structure according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a sub-assembly 9 that embodies the structure of a parking apparatus according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view of the component shown in FIG. FIG. 3 shows a perspective view of the locking member 11.
As shown in FIG. 3, the locking member 11 is formed by press-molding a flat plate. Each part of the locking member 11 will be described. At the left end of the locking member 11 shown in FIG. 3, a detent spring mounting portion 11c is formed which is bent and formed 90 degrees with respect to the flat plate. A cutout portion 11f for bending the detent spring attachment portion 11c is formed on the right side of the detent spring attachment portion 11c.
A rib 11e is press-formed on the detent spring mounting portion 11c. The detent spring mounting portion 11c has a mounting hole 11i for mounting the detent spring 19. A mounting nut 11d is fixed to the back surface of the mounting hole 11i by welding.

In the vicinity of the center of the locking member 11, a step-shaped lock lever holding portion 11g is press-molded. An attachment hole 11k for attaching the lock lever 15 is formed at the center of the lock lever holding portion 11g. Three attachment holes 11l for attaching the actuator 17 are formed around the lock lever holding portion 11g.
A pair of guide convex portions 11a and 11b are press-molded on the right side of the lock lever holding portion 11g. Compared with the length of the guide convex part 11a, the length of the guide convex part 11b is shortened. In FIG. 1, FIG. 3, etc., the guide convex portions 11a and 11b are expressed as square-shaped convex portions, but actually, they are processed by press molding and have rounded shapes.
An attachment hole 11m for attaching the cover guide 12 is formed on the right side of the pair of guide convex portions 11a and 11b. Further, on the right side, a lock pole mounting portion 11h and a mounting hole 11j, which are step portions for mounting the parking rod 21, are formed.

FIG. 4 shows a plan view of the subassembly 10 and FIG. 5 shows a front view of the subassembly 9. Based on FIGS. 1-5, the structure of the subassembly 9 of a parking apparatus is demonstrated.
The lower end portion of the rotation shaft 15a of the lock lever 15 is rotatably held in the mounting hole 11k. A cam portion including two cam valleys 15 b and 15 c is formed at one end of the lock lever 15. The other end of the lock lever 15 is connected to a rear end shaft 14 c that is a bent shaft of the parking rod 14. The rod body 14a is connected from the rear end shaft 14c via the linear shaft 14b.
As shown in FIG. 1, the rod main body 14a of the parking rod 14 is sandwiched between the inner side surface of the guide convex portion 11a and the inner side surface of the guide convex portion 11b, and is guided so as to move linearly. The upper side is guided by the back surface of the cover guide 14 so as not to float from the surface of the locking member 11.

The lock pole 21 is rotatably held by the rod shaft 22 through the attachment hole 21b in the attachment hole 11j of the lock pole attachment portion 11h. The lock pole 21 is in contact only with the lock pole mounting portion 11h, and reduces rotational friction. As shown in FIG. 14, an engagement portion 21 a for engaging with the parking gear 31 and a cam contact portion 21 c that contacts the rod body 14 a of the parking rod 14 are formed at the tip of the lock pole 21.
A torsion spring 23 is attached to the outer periphery of the rod shaft 22 by a spring shaft 24. One end of the torsion spring 23 is engaged and fixed to the end face of the locking member 11, the other end abuts on the lock pole 21, the lock pawl 21, and the cam abutment portion 21 c on the rod body 14 a of the parking rod 14. It is biased in the direction of contact.

Actuators 17 are attached to three attachment holes 11l of the locking member 11 via three legs 17a. The output shaft of the actuator 17 is connected to the rotation shaft 15 a of the rod lever 15, and the rod lever 15 is rotated by driving the actuator 17.
One end of the detent spring 19 is attached to the attachment hole 11 i of the detent spring attachment portion 11 c of the locking member 11 by an attachment bolt 20. Here, when the detent spring 19 is attached, the rib 11e functions as a detent and positioning.
A cam follower 19 a is attached to the other end of the detent spring 19, and the cam follower 19 a is engaged with one of the two cam valleys 15 b and 15 c of the lock lever 15. The detent spring 19 keeps the lock lever 19 from rotating by its own urging force even when no current is supplied to the actuator 17.

Next, a process for manufacturing the subassembly will be described. 6 to 9 show process diagrams. 6 to 9 are views in which the locking member 10 is viewed from the same oblique direction.
First, the rod lever 15 to which the parking rod 14 is attached is attached to the locking member 11. That is, the rotary shaft 15a is fitted into the mounting hole 11k of the lock lever mounting portion 11g. At this time, it sets so that the rod main body 14a of the parking rod 14 may be pinched | interposed into a pair of guide convex part 11a, 11b.
Next, as shown in FIG. 7, the detent spring 19 is fixed to the detent spring mounting portion 11c. At this time, the cam follower 19 a of the detent spring 19 is engaged with the cam valley 15 c of the lock lever 15.

Next, the parking rod 21 and the torsion spring 23 are rotatably attached to the attachment hole 11j of the parking rod attachment portion 11h by the spring shaft 24. At this time, one end of the torsion spring 23 is engaged with the end face of the locking member 11, and the other end is attached in contact with the lock pole 21. Further, the guide contact surface 21 c of the parking rod 21 is brought into contact with the rod body 14 a of the parking rod 14.
Next, the cover guide 12 is attached to the locking member 11 with two bolts. At this time, the back surface of the cover guide 12 is in contact with the upper surface of the lock body 14 a of the parking rod 14.
Thereby, the subassembly 9 shown in FIG. 1 is completed.

Next, the guide of the lock body 14a of the parking rod 14 will be described in detail. FIG. 11 shows the positional relationship between the pair of guide convex portions 11a and 11b, the lock main body 14a, the lock pole 21 and the like with the cover guide 12 removed. FIG. 12 is a sectional view showing the positional relationship between the pair of guide protrusions 11a and 11b, the lock main body 14a, the cover guide 12, and the like.
The plate | board thickness of the locking member 11 is 1.5 mm-2.0 mm, for example, and a pair of guide convex part 11a, 11b is formed by the drawing process of press molding.
As shown in FIGS. 11 and 12, the outer peripheral surface of the rod main body 14a is sandwiched between the left outer peripheral surface of the guide convex portion 11a and the right outer peripheral surface of the guide convex portion 11b. Further, the upper surface of the rod body 14 a is in contact with the lower surface of the cover guide 12. The pair of guide protrusions 11a and 11b are formed by press forming, but the lock body 14a has a circular cross section and is a substantially line in contact with each other. Of the outer shapes of the guide projections 11a and 11b, the molding accuracy in the vicinity of being in contact with the lock body 14a can be increased. In addition, you may harden the guide surface of the guide convex parts 11a and 11b by carburizing quenching, ultrasonic quenching, etc.
The guide protrusion 11b is formed shorter than the guide protrusion 11a. At the location where the guide 11b is interrupted, the lock body 14a is in contact with the guide contact surface 21c of the lock pole 21. The lock main body 14a is pressed against the guide convex portion 11a by the urging force of the torsion spring 23.
Further, since the lock main body 14a is prevented from being lifted by the cover guide 12, it is guided to an accurate position by the pair of guide convex portions 11a and 11b.

As shown in FIG. 10, the subassembly 9 is attached to the transaxle 33 at a position where the engaging portion 21 a of the lock pole 21 faces the parking gear 31 using an attachment hole bolt.
13 and 14 show the relationship between the lock pole 21 and the parking gear 31. FIG. FIG. 13 shows a state where the engaging portion 21 a of the lock pole 21 is not engaged with the parking gear 31. FIG. 14 shows a state in which the engaging portion 21 a of the lock pole 21 is engaged with the parking gear 31. In FIGS. 13 and 14, the actuator 17 and the like are omitted for easy viewing.
That is, in the state of FIG. 13, the parking lever 15 is in a position where the cam valley 15 c engages with the cam follower 19 a of the detent spring 19. At this time, the engaging portion 21 a of the lock pole 21 is not engaged with the parking gear 31.

Next, the operation of the parking apparatus having the above configuration will be described. When the automobile is running with the sub-assembly 9 attached to the transaxle, the engaging portion 21a of the lock pole 21 is in a position not engaged with the parking gear as shown in FIG. When the shift lever is put into parking, the actuator 17 is driven and the parking lever 15 rotates clockwise.
When the parking lever 15 rotates clockwise, the parking rod 14 is guided by the pair of guide convex portions 11a and 11b and moves rightward in the figure. Then, as shown in FIG. 14, the cam valley 15 b stops at a position where it engages with the cam follower 19 a of the detent spring 19. At this time, the engaging portion 21 a of the lock pole 21 is engaged with the parking gear 31 and restricts the rotation of the parking gear 31.
Since the cam follower 19a of the detent spring 19 is engaged with the cam valley 15c or the cam valley 15b of the parking lever 15 both in the position shown in FIG. 13 and in the position shown in FIG. The engagement relationship between the lock pawl 21 and the parking gear 31 is not affected even if it is dropped.
Since the movement when the parking is released is only the reverse of the above-described action due to the reverse rotation of the actuator 17, a detailed description is omitted.

  As described above in detail, according to the parking device structure of the present embodiment, the lock pole 21 that engages with the parking gear 31, the parking rod 14 that engages the lock pole 21 with the parking gear 31, and the parking rod 14 A parking device structure having as a part a parking lever 15 that moves and an actuator 17 that drives the parking lever 15, and is rotatably held in a mounting hole formed in the flat-shaped locking member 11. A lever 15, a parking rod 14 having one end coupled to the parking lever 15, and a pair of guide projections 11 a and 11 b formed on the locking member 11 by pressing so as to linearly guide the parking rod 14. Need a sleeve to guide the parking rod Can be achieved damaged, the cost. That is, not only can the manufacturing cost of the sleeve itself be reduced, but there is no need to fix the sleeve to the mounting plate by press-fitting or the like, so that the cost can be doubled.

Further, according to the parking device structure of the present embodiment, the detent spring mounting portion 11c obtained by bending the locking member 11 vertically on the flat locking member 11 is formed by pressing, and the detent spring mounting portion 11c is formed on the detent spring mounting portion 11c. Since the detent spring 19 is mounted from the direction parallel to the locking member 11, the detent spring mounting bracket that has been required in the past is not required, so the number of parts is reduced and the cost is reduced. Can be down.
Further, according to the parking device structure of the present embodiment, the lock pawl 21, the parking rod 14, the parking lever 15, and the actuator 17 are assembled from one direction perpendicular to the flat locking member 11, Because of this, it is easy to automate the assembly of sub-assemblies, increasing production efficiency and reducing costs. Moreover, since the shape of a subassembly is flat form, there exists an advantage which is easy to attach with respect to a main body. Furthermore, since the assembled subassembly 9 is attached to the transaxle case with the back surface of the locking member 11 as the reference surface, the relative position between the lock pole 21 and the parking gear 31 can be assembled with high accuracy. .

Next, a second embodiment of the present invention will be described. Since the basic configuration of the parking device structure of the second embodiment is substantially the same as that of the first embodiment, parts having the same structure are denoted by the same reference numerals and detailed description thereof is omitted. FIG. 15 shows a perspective view of the sub-assembly 40 of the parking device structure of the second embodiment, and FIG. 16 shows an exploded perspective view.
The shape of the locking member 26 is slightly different from the locking member 11 of the first embodiment. That is, the locking member 26 has no detent spring mounting portion 11 c formed vertically, and a detent spring mounting hole 26 c is formed in the flat plate of the locking member 11. Thereby, the detent spring 19 is attached in parallel with the locking member 11. The shape of the pair of guide convex portions 26a, 26b is the same as the guide convex portions 11a, 11b of the first embodiment.
Accordingly, a cam wall 25d perpendicular to the parking lever 15 is formed, and cam valleys 25b and 25c are formed at the tip of the cam wall 26d. As shown in FIG. 16, the parking lever 15 is attached from the back side of the locking member 11 by a rotating shaft 25a.
According to this structure, the parts are attached to the lower side of the locking member 11, but the height at which the upper part of the locking member 11 is attached can be reduced.

  As described above, according to the parking device structure of the second embodiment, the detent spring 19, the lock pole 21, the parking rod 14, the parking lever 15, and the actuator 17 are perpendicular to the flat locking member 11. Because it can be assembled from both sides, all parts can be assembled only from both directions perpendicular to the flat plate, so it is easy to automate, assemble production efficiency, and cost to assemble subassemblies. You can go down. Moreover, since the shape of a subassembly is flat form, there exists an advantage which is easy to attach with respect to a main body.

Note that the present invention is not limited to the above-described embodiment, and various applications are possible.
For example, in this embodiment, the guide surfaces of the pair of guide convex portions 11a and 11b are not machine-finished, but the accuracy of the guide may be increased by performing machine finishing.

It is a perspective view which shows the structure of the subassembly 9 of the parking apparatus structure of 1st Example of this invention. 4 is an exploded perspective view showing a component configuration of a subassembly 9. FIG. 3 is a perspective view showing a shape of a locking member 11. FIG. 3 is a plan view of a subassembly 9. FIG. 4 is a front view of a subassembly 9. FIG. FIG. 6 is a first process diagram showing an assembly order of subassemblies 9. FIG. 10 is a second process diagram illustrating the assembly order of the sub-assembly 9. FIG. 10 is a third process diagram illustrating the assembly order of the sub-assembly 9. FIG. 10 is a fourth process diagram illustrating the assembly order of the sub-assembly 9. FIG. 6 is a plan view showing a state where the subassembly 9 is attached to the transaxle case 33. It is a figure which shows the positional relationship of a pair of guide convex part 11a, 11b, the lock main body 14a, the lock pole 21, etc. in the state which removed the cover guide 12. FIG. It is sectional drawing which shows the positional relationship of a pair of guide convex part 11a, 11b, the lock main body 14a, the cover guide 12, etc. FIG. FIG. 3 is a diagram showing a relationship between a lock pole 21 and a parking gear 31. FIG. 3 is a diagram showing a relationship between a lock pole 21 and a parking gear 31. It is a perspective view which shows the structure of the subassembly 30 of the parking apparatus structure of 2nd Example of this invention. 3 is an exploded perspective view of a subassembly 30. FIG.

Explanation of symbols

9, 30 Subassemblies 11, 26 Locking members 11a, 11b, 26a, 26b Guide convex portion 11c Detent spring mounting portion 12 Cover guide 14 Parking rod 14a Rod body 15, 25 Parking lever 17 Actuator 19 Detent spring 21 Lock pole 23 Torsion spring 31 Parking gear 33 Transaxle case

Claims (4)

A parking apparatus having a lock pole engaging with a parking gear, a parking rod for engaging the lock pole with the parking gear, a parking lever for moving the parking rod, and an actuator for driving the parking lever as parts. In structure
A parking lever rotatably held in a mounting hole formed in the flat plate;
A parking rod having one end coupled to the parking lever;
A pair of guide projections for linearly guiding the parking rod, formed by pressing on the flat plate;
A parking device structure characterized by comprising: In the parking device structure according to claim 1,
A detent spring mounting portion formed by bending the flat plate on the flat plate is formed by pressing, and the detent spring is mounted on the detent spring mounting portion from a direction parallel to the plane;
A parking device structure characterized by. In the parking device structure according to claim 2,
The lock pole, the parking rod, the parking lever, and the actuator are assembled from one direction perpendicular to the flat plate;
A parking device structure characterized by. In the parking device structure according to claim 1,
The detent spring, the lock pole, the parking rod, the parking lever, and the actuator are assembled from both sides perpendicular to the flat plate;
A parking device structure characterized by.

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