Baffle plate

Abstract

To provide a baffle plate which is easy in attachment to a case.SOLUTION: A baffle plate 10 comprises a first rod 22a whose tip part 60 is inserted into an attachment hole 12a formed at a case inner face, and a plate 20 supported by the first rod 22a. The plate 20 has a first holding part for holding the first rod 22a, and a second holding part that is located closer to the attachment hole than the first holding part and holds the first rod 22a. The first rod 22a is movably held by the first holding part and the second holding part in an axial direction so as to be capable of advancing and retreating in / from the attachment hole. The first rod 22a can take a locked position where the tip part of the first rod 22a is inserted into the attachment hole by axial movement, and a lock release position where the tip part is drawn closer to the second holding part than it is in the locked position.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a baffle plate that is attached to a transmission case. [Background technology]

[0002] Patent Document 1 discloses a baffle plate for a differential device that is disposed inside a differential case and is fixed to the differential case with bolts. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-178887 Summary of the Invention [Problem to be solved by the invention]

[0004] The baffle plate disclosed in Patent Document 1 is fixed to the differential case by a plurality of bolts, but the work of tightening the plurality of bolts is cumbersome.

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide a baffle plate that can be easily attached to a case. [Means for solving the problem]

[0006] To solve the above problems, one aspect of the present invention is a baffle plate attached to a mounting hole formed in the inner surface of a transmission case, the baffle plate comprising: a rod whose tip is inserted into the mounting hole formed in the inner surface of the case; and a plate supported by the rod. The plate has a first holding portion that holds the rod, and a second holding portion that is located closer to the mounting hole than the first holding portion and holds the rod. The rod is held by the first holding portion and the second holding portion so that it can move axially forward and backward in the mounting hole, and the rod can take a locked position where the tip of the rod is inserted into the mounting hole and an unlocked position where the tip is retracted closer to the second holding portion than the locked position, depending on the axial movement. [Effects of the Invention]

[0007] According to the present invention, a baffle plate that can be easily attached to a case can be provided. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a perspective view of an example baffle plate installed in a transmission case. [Figure 2] FIG. 2 is a perspective view of a baffle plate according to an embodiment. [Figure 3] FIG. 10 is a diagram illustrating a first rod. [Figure 4] FIG. 10 is a diagram illustrating a second rod. [Figure 5] FIG. 5(a) is a rear view of the baffle plate, and FIG. 5(b) is a front view of the baffle plate. [Figure 6] 10A and 10B are diagrams for explaining the baffle plate mounting process. DETAILED DESCRIPTION OF THE INVENTION

[0009] 1 is a perspective view of a baffle plate 10 of an embodiment attached to a transmission case 12. The baffle plate 10 is fixed to the case 12, divides the internal space of the transmission, and restricts the movement of oil within the transmission.

[0010] The case 12 has mounting holes 12a, an inner surface 12b, a raised portion 12c, and a through-hole portion 12d. A pair of mounting holes 12a are formed on the inner surface 12b of the case 12 for mounting the baffle plate 10, and are arranged coaxially. The raised portion 12c is formed to raise the inner surface 12b of the case 12 and is located in one of the two internal spaces partitioned by the baffle plate 10. The baffle plate 10 is pressed against the raised portion 12c, and the raised portion 12c functions as a rotation stopper for the baffle plate 10. The through-hole portion 12d is formed on the bottom surface of the case 12. The baffle plate 10 is positioned between the raised portion 12c and the through-hole portion 12d.

[0011] The baffle plate 10 includes a plate 20, a first rod 22a, a second rod 22b, and a seal 24. The plate 20 is formed in a generally plate-like shape and is supported by the first rod 22a and the second rod 22b, and is fixed by being pressed against the raised portion 12c. The lower edge of the plate 20 is formed in an arc shape, and a seal 24 made of rubber, viscoelastic material, or the like is attached to the plate 20.

[0012] The first rod 22a is inserted into one of the mounting holes 12a, and the second rod 22b is inserted into the other mounting hole 12a, and the first rod 22a and the second rod 22b (when not distinguished, they are referred to as "rods 22") support the plate 20. The rods 22 bias the front side of the plate 20 so as to press the back side of the plate 20 against the raised portion 12c.

[0013] Fig. 2 is a perspective view of the baffle plate 10 of the embodiment, Fig. 3 is a diagram for explaining the first rod 22a, and Fig. 4 is a diagram for explaining the second rod 22b.

[0014] FIG. 3(a) shows a front view of the first rod 22a, FIG. 3(b) shows a top view of the first rod 22a, and FIG. 3(c) shows a side view of the first rod 22a. The first rod 22a is formed by bending a metal wire. The first rod 22a has a tip end 60, a base end 62, and a bent portion 64. The tip end 60 is inserted into the mounting hole 12a.

[0015] The bent portion 64 includes a first extending portion 66a and a second extending portion 66b (referred to as "extending portion 66" when not distinguishing between them), and is formed in a substantially U-shape by connecting the pair of extending portions 66. The extending portion 66 extends in a direction intersecting the axial direction of the distal end portion 60 and the proximal end portion 62, and more preferably perpendicular to the axial direction of the distal end portion 60 and the proximal end portion 62. The axial direction of the distal end portion 60 and the axial direction of the proximal end portion 62 may intersect. The first extending portion 66a and the second extending portion 66b have different lengths, and the first extending portion 66a is shorter than the second extending portion 66b. The first extending portion 66a and the second extending portion 66b extend in directions intersecting each other.

[0016] 3(b) and 3(c), the tip end 60 and the base end 62 are positioned offset in the axial direction. When the tip end 60 is inserted into the mounting hole 12a as shown in FIG. 1, the tip end 60 and the base end 62 are closer to each other in the axial direction than in the free state, and the first rod 22a generates a biasing force that presses the base end 62 against the plate 20. This rotational biasing force of the first rod 22a presses the plate 20 against the raised portion 12c, and the baffle plate 10 is fixed in a state where rattle is suppressed.

[0017] FIG. 4(a) shows a front view of the second rod 22b, FIG. 4(b) shows a top view of the second rod 22b, and FIG. 4(c) shows a side view of the second rod 22b. The second rod 22b is formed by bending a metal wire. The second rod 22b has a tip end 68, a base end 70, and a bent portion 72. The tip end 68 is inserted into the mounting hole 12a.

[0018] The bent portion 72 includes an extending portion 74 that extends in a direction intersecting the axial direction of the distal end portion 68 and the proximal end portion 70, and is formed in a generally U-shape. In a free state, the distal end portion 68 and the proximal end portion 70 are positioned offset from each other when viewed in the axial direction. When the distal end portion 68 is inserted into the mounting hole 12a as shown in FIG. 1, the distal end portion 68 and the proximal end portion 70 are closer to each other than in the free state, and the second rod 22b generates a biasing force that presses the proximal end portion 70 against the plate 20.

[0019] Fig. 5(a) is a rear view of the baffle plate 10, and Fig. 5(b) is a front view of the baffle plate 10. The plate 20 has a first holding portion 30, a second holding portion 32, a third holding portion 34, a first protrusion 36, a second protrusion 38, a third protrusion 40, a first holding portion 42, a second holding portion 44, a fourth protrusion 46, a fifth protrusion 48, a first elastic claw portion 50, a second elastic claw portion 52, and a convex portion 54.

[0020] The first holding portion 30, the second holding portion 32, and the third holding portion 34 hold the first rod 22a. The first holding portion 30 holds the base end 62 side of the first rod 22a, the second holding portion 32 holds the tip end 60 side of the first rod 22a, and the third holding portion 34 is provided between the first holding portion 30 and the second holding portion 32. The second holding portion 32 is located closer to the mounting hole 12a, through which the first rod 22a is inserted, than the first holding portion 30.

[0021] As shown in FIG. 2, the second holding portion 32 has a larger diameter than the first holding portion 30, and the first rod 22a is inserted through the second holding portion 32 with a gap therebetween. On the other hand, the first holding portion 30 has a larger diameter than, but approximately the same diameter as, the first rod 22a. This allows the first holding portion 30 to suppress any rattle on the base end 62 side of the first rod 22a. Any rattle on the tip end 60 side of the first rod 22a is suppressed by the mounting hole 12a and the third holding portion 34. The third holding portion 34 is formed in an inverted L-shape and prevents the first rod 22a from moving away from the plate 20.

[0022] The first holding portion 30, the second holding portion 32, and the third holding portion 34 penetrate in the same axial direction as the mounting hole 12a and hold the first rod 22a so that it can move in the axial direction of the mounting hole 12a. Note that the axial direction of the mounting hole 12a and the axial directions of the first holding portion 30 and the second holding portion 32 are the same, and may be simply referred to as the "axial direction." The tip end 60 and base end 62 of the first rod 22a are also attached along the axial direction and are coaxial.

[0023] The first holding portion 42 and the second holding portion 44 hold the second rod 22b. The second holding portion 44 is located closer to the mounting hole 12a, through which the second rod 22b is inserted, than the first holding portion 42, and has a larger diameter than the first holding portion 42.

[0024] The first protrusion 36, the second protrusion 38, and the third protrusion 40 protrude from the surface of the plate 20 and limit the axial movement of the first rod 22a. The second protrusion 38 and the third protrusion 40 function as first limiters that limit the axial movement of the first rod 22a in the locked position shown in FIG. 1. The second protrusion 38 abuts against the first extension 66a to limit the retraction of the first rod 22a, and the third protrusion 40 abuts against the second extension 66b to limit the advancement of the first rod 22a.

[0025] The first protrusion 36 and the second protrusion 38 function as second limiters that limit the axial movement of the first rod 22a in the unlocked position shown in Fig. 5(b). The first protrusion 36 abuts against the first extension 66a to limit the retraction of the first rod 22a, and the second protrusion 38 abuts against the first extension 66a to limit the advancement of the first rod 22a. In this way, the second protrusion 38 functions as both a first limiter and a second limiter.

[0026] The extension portion 66 engages with the first limiting portions (the second protrusions 38 and the third protrusions 40) in the locked position shown in FIG. 1, and engages with the second limiting portions (the first protrusions 36 and the second protrusions 38) in the unlocked position shown in FIG. 5(b). In this way, the orientation of the first rod 22a is maintained at two positions, so movement of the first rod 22a can be suppressed during transportation before attachment to the case 12. Furthermore, after the baffle plate 10 is attached to the case 12, movement of the first rod 22a out of the attachment hole 12a can be restricted.

[0027] The fourth protrusion 46 and the fifth protrusion 48 protrude from the surface of the plate 20. The fourth protrusion 46 and the fifth protrusion 48 abut against the pair of extending portions 74 and function as third limiting portions that limit the advancement and retreat of the second rod 22b.

[0028] The first elastic claw portion 50 and the second elastic claw portion 52 are provided to stand on the surface of the plate 20 and are flexible. The first elastic claw portion 50 engages with the bent portion 64 of the first rod 22a to stop the rotation of the first rod 22a around its axis. The second elastic claw portion 52 engages with the bent portion 72 of the second rod 22b to stop the rotation of the second rod 22b around its axis.

[0029] The protrusions 54 are formed on the substantially arc-shaped edge 55 of the plate 20 so as to protrude outward, and protrude toward the inner surface 12b of the case 12. The seal 24 is provided on the substantially arc-shaped edge 55 of the plate 20, and abuts against the inner surface 12b of the case 12. When the seal 24 is pressed against the inner surface 12b of the case 12 due to vibration or impact of the vehicle, the protrusions 54 abut against the inner surface 12b, preventing the seal 24 from being excessively crushed.

[0030] The seal 24 is attached to the plate 20 by a plurality of fitting portions 76. The fitting portions 76 are formed in the shape of protrusions on the seal 24, and fit into the plate 20 in a concave-convex manner.

[0031] Figure 6 is a diagram illustrating the process of attaching the baffle plate 10. With the first rod 22a in the unlocked position shown in Figure 5(b), the worker hooks the bent portion 64 with a tool or the like to rotate the first rod 22a about its axis, and lifts the bent portion 64 shown by the solid line in Figure 6. When the first rod 22a is rotated, the first elastic claw portion 50 bends and releases the lock.

[0032] The bent portion 64, including the extending portion 66, assumes a position that allows it to climb over the first limiting portion (the second protruding portion 38 and the third protruding portion 40) and the second limiting portion (the first protruding portion 36 and the second protruding portion 38) by rotating the first rod 22a about its axis. This allows the first rod 22a to move axially, and as shown by the dashed line in Figure 6, it moves toward the mounting hole 12a, and the tip portion 60 is inserted into the mounting hole 12a.

[0033] After inserting the tip portion 60 into the mounting hole 12a, the worker rotates the bent portion 64 toward the plate 20 to engage the bent portion 64 with the first restricting portions (the second protrusion 38 and the third protrusion 40) at the locked position. In this way, the first rod 22a moves axially from the unlocked position in which the tip portion 60 is retracted closer to the second holding portion 32 than the locked position, as shown in FIG. 5(b), to the locked position in which the tip portion 60 of the first rod 22a is inserted into the mounting hole 12a, as shown in FIG. 1. The worker can install the baffle plate 10 by rotating and moving the first rod 22a, which is pre-assembled to the plate 20, making the installation process easy.

[0034] The second holding portion 32 has a larger diameter than the first holding portion 30. This allows any manufacturing error in the position of the mounting hole 12a to be absorbed, making it easier to insert the first rod 22a into the mounting hole 12a. Furthermore, the first rod 22a can bend within the second holding portion 32, generating a biasing force that presses the plate 20 against the raised portion 12c.

[0035] The present invention is not limited to the above-described embodiments, and various modifications such as design changes may be made to the embodiments based on the knowledge of those skilled in the art, and such modified embodiments may also be included within the scope of the present invention. [Explanation of symbols]

[0036] 10 baffle plate, 12 case, 12a mounting hole, 20 plate, 22a first rod, 22b second rod, 24 seal, 30 first retaining portion, 32 second retaining portion, 34 third retaining portion, 36 first protrusion, 38 second protrusion, 40 third protrusion, 42 first retaining portion, 44 second retaining portion, 46 fourth protrusion, 48 fifth protrusion, 50 first elastic claw portion, 52 second elastic claw portion, 54 convex portion, 60 tip portion, 62 base end portion, 64 bent portion, 66a first extension portion, 66b second extension portion.

Claims

1. A baffle plate attached to a mounting hole formed on the inner surface of a transmission case, a rod whose tip is inserted into a mounting hole formed on the inner surface of the case; a plate supported by the rod; The plate is a first holding portion that holds the rod; a second holding portion that is located closer to the mounting hole than the first holding portion and that holds the rod, the rod is held by the first holding portion and the second holding portion so as to be movable in the axial direction toward and away from the mounting hole, The baffle plate is characterized in that the rod, by moving axially, takes a locked position in which the tip of the rod is inserted into the mounting hole, and an unlocked position in which the tip is retracted toward the second retaining portion further than the locked position.

2. The plate is a first limiting portion that limits axial movement of the rod at a lock position; 2. The baffle plate according to claim 1, further comprising: a second limiting portion that limits axial movement of the rod in the unlocked position.

3. The rod is at least one extending portion extending in a direction intersecting the axial direction, engaging with the first limiting portion in a locked position and engaging with the second limiting portion in an unlocked position; The baffle plate according to claim 2 , wherein the extension portion is positioned so as to be able to overcome the first limiting portion and the second limiting portion by rotation of the rod about the axis.

4. the rod has a substantially U-shaped bent portion including the extension portion and is formed of a wire material; The distal end and the proximal end of the rod are positioned offset from each other in the axial direction in a free state, 4. The baffle plate according to claim 3, wherein the tip portion and the base end portion approach each other in the axial direction when the tip portion is inserted into the mounting hole, and the rod generates a biasing force that presses the base end portion against the plate.

5. a seal portion provided on an edge of the plate and abutting against an inner surface of the case; 5. The baffle plate according to claim 1, wherein the plate has a protrusion that protrudes from the edge toward the inner surface of the case.

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