JP6356858B2 - Operation lever - Google Patents

Description

  The present invention relates to an operation lever, and more particularly to an operation lever device for adjusting a seating surface position of a vehicle seat.

Conventionally, in a seat device such as a vehicle, a seat device equipped with an operation transmission member such as a height brake for adjusting a seat surface position is known. An operation lever is attached to the operation transmission member, and the operation transmission member is driven by moving the operation lever up and down to raise and lower the seating surface position of the seat device. However, if the operating lever is operated with a force greater than expected, a large force may be applied to the operation transmission member.
For this reason, in recent years, a technique has been developed in which a torque limiter is provided on the operation lever so that a force greater than a predetermined force does not act on the operation transmission member (see, for example, Patent Document 1). Specifically, the operation lever is divided into a lever main body and a grip, and a U-shaped spring groove is opened at one end of the lever main body and one side of the base of the grip. The groove ends of both U-shaped spring grooves face each other, and are assembled by being hinged to each other at the tip of the lever body and the root of the grip. The operating lever has an elongated thin leaf spring that warps in the width direction of the plate, with its warped side plate surface on the outside, and is loosely wound in an appropriate loop over the lever body and the U-shaped spring groove of the grip. A torque limiter to be stopped is built in.

JP 2001-310660 A

However, in reality, the operation lever having the torque limiter as described above has a complicated structure and thus has a negative effect on the manufacturing cost. In addition, because there is a gap between the lever body and the grip on the operation lever, the grip may be deformed slightly with respect to the lever body even during normal operation. Is a factor that gives
Accordingly, an object of the present invention is to provide an operation lever that can suppress a force more than expected to act on the operation transmission member even with a simple configuration, and can suppress a sense of incongruity during normal operation. is there.

In order to solve the above problems, an operation lever according to the invention of claim 1 is provided:
An attachment portion attached to the operation transmission member;
A grasping unit grasped by the user;
A connecting portion for connecting the mounting portion to the grasping portion;
Have
A connection upper flange is formed on the upper edge of the connection part,
A lower connecting flange is formed on the lower edge of the connecting portion,
Wherein the said connecting upper flange and the connecting lower flange and the portion sandwiched between the upper and lower direction of the connecting portion, and the thick portion, and thinner portion is formed by connecting,
The thick portion is formed on the attachment portion side of the portion sandwiched in the vertical direction by the connection upper flange and the connection lower flange, compared to the thin portion, the connection upper flange and the connection lower portion It is a part where the thickness in the direction where the flange stands is thick,
The thin portion is formed on the grasping portion side of the portion sandwiched in the vertical direction by the connection upper flange and the connection lower flange, compared to the thick portion, the connection upper flange and the connection lower portion It is characterized in that the thickness in the direction in which the flange stands is thin .
The invention according to claim 2 is the operation lever according to claim 1,
The thick part of the connecting part is connected to the thin part of the connecting part at the central part of the connecting part.
The invention according to claim 3 is the operation lever according to claim 1 or 2,
The connecting portion is characterized in that a thick portion and a thin portion are integrally formed of resin.
The invention according to claim 4 is the operating lever according to any one of claims 1 to 3,
The connecting portion is integrally formed of resin together with the mounting portion and the grasping portion.
Invention of Claim 5 is an operation lever as described in any one of Claims 1-4,
The connecting portion is characterized in that the vicinity of the end portion on the grasping portion side of the thick portion functions as a fragile portion that is weaker than other portions .
請 Motomeko 6 the described invention, the operating lever according to any one of claims 1 to 5
The connecting portion extends obliquely upward from a lower end portion of the mounting portion.
The invention according to claim 7 is the operation lever according to any one of claims 1 to 6 ,
The thick part of the connection part is a rib part formed from the end part on the attachment part side to the center part.

The invention according to claim 8 is the operation lever according to any one of claims 1 to 7 ,
In the connecting part,
A connecting main body along a plane orthogonal to the rotation axis of the operation transmitting member;
A connection upper flange standing from the upper edge of the connection main body,
A connecting lower flange erected from the lower edge of the connecting main body,
A rib portion formed between the connection upper flange and the connection lower flange and formed from the end portion on the attachment portion side to the center portion is provided,
In the vicinity of the end of the rib portion on the grasping portion side, a weakened portion that is weaker than other portions is provided.

The invention according to claim 9 is the operation lever according to claim 8 ,
A large number of cylindrical holes are densely formed in the rib portion.

The invention according to claim 10 is the operation lever according to claim 8 or 9 ,
The end of the rib portion on the connection upper flange side is further away from the vertical line passing through the rotation shaft of the operation transmission member than the end of the rib portion on the connection lower flange side. .

The eleventh aspect of the present invention is the operation lever according to any one of the eighth to tenth aspects,
The grasping unit
A grasping main body along a plane orthogonal to the rotation axis of the operation transmitting member, so as to be continuous with the connection main body,
A grasping upper flange standing from an upper edge of the grasping main body so as to be continuous with the connecting upper flange;
A grasping lower flange standing from a lower edge of the grasping main body so as to be continuous with the connecting lower flange;
An auxiliary flange extending substantially in parallel with the grasping main body from the lower end of the grasping lower flange is provided.
The invention according to claim 12 is the operation lever according to claim 11 ,
In the state where the grasping upper flange is located above the grasping portion, the grasping lower flange is located below the grasping portion, and these are arranged so as to extend in a substantially horizontal direction,
End of the side on which the grasping portion of the front Symbol grasp the lower flange is connected to the connection portion opposite is characterized in that it is arranged above the upper end of the thick portion of the connecting portion.
The invention according to claim 13 is the operation lever according to claim 11 or 12,
In the state where the grasping upper flange is located above the grasping portion, the grasping lower flange is located below the grasping portion, and these are arranged so as to extend in a substantially horizontal direction,
The portion where the height in the vertical direction of the connecting portion is the largest is the vertical direction than the portion where the height in the vertical direction of the mounting portion is the largest and the portion where the height in the vertical direction of the grasping portion is the largest. It is characterized in that the height is formed small.

The invention according to claim 14 is the operation lever according to any one of claims 1 to 13 ,
The mounting portion includes a first wall portion that surrounds the entire circumference of the operation transmission member, and a second wall portion that surrounds the entire circumference of the first wall portion,
Between the first wall portion and the second wall portion, a plurality of ribs that are continuous to the first wall portion and the second wall portion are provided at a predetermined interval. .

According to the first aspect of the invention, so that also connecting portion is deformed before a large force to the operation transmitting member is transmitted as the applied force exceeds the maximum value to the operation lever.
According to the fourth aspect of the present invention, it is possible to provide an operation lever having a simpler configuration than the conventional one.

According to the invention described in claim 8 , the connecting portion is formed between the connecting upper flange and the connecting lower flange, and the rib portion is formed from the end portion on the attachment portion side to the center portion. The strength of the joint portion with the mounting portion can be increased. During normal operation, stress is inevitably concentrated on the joint portion between the connecting portion and the mounting portion, but since the strength of this portion is increased, it is possible to suppress deformation during normal operation. it can.

According to invention of Claim 9 , since many cylindrical holes are densely formed in the rib part, the usage-amount of resin can be suppressed, ensuring the intensity | strength of a rib part.

According to the tenth aspect of the present invention, the end of the rib portion on the connection upper flange side is farther from the vertical line passing through the rotation shaft of the operation transmitting member than the end of the rib portion on the connection lower flange side. Therefore, when the fragile portion is deformed, a twisting force with respect to a plane orthogonal to the rotation axis acts on the operation transmission member via the attachment portion. For this reason, the force which acts on an operation transmission member at the time of a deformation | transformation of a weak part is suppressed, and it can suppress further that a big force is transmitted to an operation transmission member.

According to the eleventh aspect of the invention, since the grasping portion is provided with the auxiliary flange extending substantially parallel to the grasping main body portion from the lower end portion of the grasping lower flange, the rigidity of the entire grasping portion is increased by the auxiliary flange. The strength of the grasping part can be increased.

According to the fourteenth aspect of the present invention, the first wall portion and the first wall portion are disposed between the first wall portion surrounding the entire circumference of the operation transmitting member and the second wall portion surrounding the entire circumference of the first wall portion. Since a plurality of ribs continuous to the two wall portions are provided at a predetermined interval, the rigidity of the mounting portion itself can be increased, and the force can be smoothly transmitted to the operation transmitting member during normal operation. .

It is a front view which shows schematic structure of the operation lever which concerns on this embodiment. It is a rear view of the operation lever of FIG. It is a perspective view which expands and shows a part of operation lever of FIG. It is a schematic diagram which shows partially the modification of the operation lever which concerns on this embodiment.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing. However, although various technically preferable limitations for implementing the present invention are given to the embodiments described below, the scope of the invention is not limited to the following embodiments and illustrated examples.

  FIG. 1 is a front view showing a schematic configuration of an operation lever according to the present embodiment, FIG. 2 is a rear view of the operation lever, and FIG. 3 is an enlarged perspective view showing a part of the operation lever. As shown in FIGS. 1 to 3, the operation lever 1 includes an attachment portion 2 attached to an operation transmission member (height brake) (not shown), a grasping portion 3 grasped by a user, and from the attachment portion 2 to the grasping portion 3. The connecting portion 4 for connecting the two is integrally formed of resin.

The mounting portion 2 includes a substantially cylindrical wall portion 21 that surrounds the entire circumference of the operation transmission member and is open on the back side, and a predetermined interval on the inner peripheral surface of the wall portion 21 to engage with the operation transmission member. And a pair of through holes 23 into which fixing tools such as screws are inserted to fix the operation transmitting member, and an exterior portion 24 that covers the front side of the wall portion 21 and forms an exterior. And.
The exterior portion 24 has an outer shape that is concentric with the wall portion 21, and has an outer diameter larger than the outer diameter of the wall portion 21.

The connecting portion 4 has a base end portion that is continuous with the lower end portion of the mounting portion 2 and extends obliquely upward from there. The connection portion 4 includes a connection main body portion 41 extending along a plane orthogonal to the rotation axis of the operation transmission member, a connection upper flange 42 erected from the upper edge portion of the connection main body portion 41 toward the back side, and a connection Between the connection lower flange 43 erected from the lower edge of the main body 41 toward the back side, the connection upper flange 42 and the connection upper flange 43, and formed from the end on the mounting portion 2 side to the center portion. And a rib portion 44 are provided.
Here, “a plane perpendicular to the rotation axis of the operation transmitting member” refers to a plane parallel to the paper surface of FIGS. 1 and 2.

The rib portion 44 is erected from the back surface of the connection main body portion 41 and is formed flush with the back surfaces of the connection upper flange 42 and the connection lower flange 43. A large number of cylindrical holes 45 are densely formed in the rib portion 44. And the edge part 44a by the side of the connection upper flange 42 in the rib part 44 is separated from the perpendicular line L1 which passes the rotating shaft of an action transmission member rather than the edge part 44b by the side of the connection lower flange 43 in the rib part 44 ( a1> b1).
And in the part in which the rib part 44 in the connection part 4 does not exist, since it is thinner than the part in which the rib part 44 exists, intensity | strength is weak. That is, the vicinity of the end portion on the grasping portion 3 side of the rib portion 44 in the connecting portion 4 becomes the fragile portion 5 that is more fragile than the other portions. Since the weakened portion 5 is formed by the presence or absence of the rib portion 44 on the back side of the connection main body portion 41, there is no gap between the connection main body portion 41, the connection upper flange 42 and the connection lower flange 43 when viewed from the front side. There is no continuous state. That is, the weak part 5 is formed in the part which avoided the outer peripheral part in the connection part 4. FIG. And the weak part 5 is previously formed in the intensity | strength which deform | transforms with the force exceeding the maximum value of the load which can be accept | permitted by the action transmission member.

The grasping part 3 extends from the tip part of the connecting part 4 along the substantially horizontal direction. The grasping body 3 includes a grasping main body 31 extending along a plane orthogonal to the rotation axis of the operation transmitting member and a connection upper flange 42 so as to be continuous with the connection main body 41. A grasping lower flange 33 erected from the lower edge part of the grasping main body part 31 toward the rear surface side so as to be continuous with the grasping upper flange 32 erected from the upper edge part toward the rear side. And an auxiliary flange 34 extending substantially in parallel with the grasping main body 31 from the lower end of the grasping lower flange 33.
Further, a plurality of ribs 35 are formed between the grasping upper flange 32 and the grasping lower flange 33 with a predetermined interval.

Next, the operation of this embodiment will be described.
During normal operation, when the grasping unit 3 is moved up and down by the user, the power is transmitted to the operation transmitting member via the connecting unit 4 and the attaching unit 2 and the operation transmitting member rotates.
On the other hand, when the operating lever 1 is operated with a force greater than expected, the stress concentrates on the fragile portion 5 that is more fragile than other portions. Since the fragile portion 5 is formed in advance so as to be deformed at about the maximum value of the load that can be permitted by the operation transmission member, if the stress greater than the maximum value is applied, the fragile portion 5 is deformed before the power is completely transmitted to the operation transmission member. Resulting in.
Here, since the end 44a on the connection upper flange 42 side of the rib portion 44 is farther from the vertical line L1 than the end 44b on the connection lower flange 43 side of the rib portion 44, the end on the connection upper flange 42 side is more. It becomes stronger than the connecting lower flange 43 side. For this reason, when the weak part 5 deform | transforms, the force twisted with respect to the plane orthogonal to a rotating shaft like the arrow Y1 shown in FIG. For this reason, the force which acts on an action transmission member at the time of a deformation | transformation of the weak part 5 is suppressed.

As described above, according to the present embodiment, the weakened portion 5 that is weaker than the other portions is provided in the portion that avoids the outer peripheral portion of the connecting portion 4 that connects the attaching portion 2 and the grasping portion 3, Since the weakened portion 5 is formed in advance so as to be deformed at the maximum load allowable by the operation transmission member, even if a force exceeding the maximum value is applied to the operation lever 1, a large force is transmitted to the operation transmission member. The fragile part 5 is deformed before.
Since the fragile portion 5 is formed in a portion that avoids the outer peripheral portion of the connecting portion 4, a gap due to the fragile portion 5 is not formed in the outer peripheral portion of the connecting portion 4, and the user can operate during normal operation. It is also possible to suppress the feeling of strangeness.
And since the attaching part 2, the grasping part 3, and the connection part 4 are integrally molded by resin, the operation lever 1 of a simpler structure than before can be provided.

  Further, the connecting portion 4 is formed with a rib portion 44 between the connecting upper flange 42 and the connecting lower flange 43 and from the end on the mounting portion 2 side to the center portion. The strength of the joint portion with 2 can be increased. During normal operation, stress is inevitably concentrated at the joint portion between the connecting portion 4 and the mounting portion 2, but the strength at this time can be improved because the strength of this portion is increased. it can.

In addition, since a large number of cylindrical holes 45 are densely formed in the rib portion 44, the amount of resin used can be suppressed while ensuring the strength of the rib portion 44.
Further, since the grasping portion 3 is provided with an auxiliary flange 34 extending from the lower end portion of the grasping lower flange 33 substantially parallel to the grasping main body portion 31, the auxiliary flange 34 increases the rigidity of the grasping portion 3 as a whole. And the strength of the grasping unit 3 can be increased.

The embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit of the present invention. In the following description, the same portions as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted.
For example, in the above-described embodiment, the case where the wall portion 21 is provided only in a single manner on the attachment portion 2 has been described as an example, but it is also possible to provide the wall portion in a double manner. FIG. 4 is a rear view schematically showing the mounting portion provided with double wall portions. As shown in FIG. 4, the mounting portion 2 </ b> A includes a first wall portion 21 a that surrounds the entire periphery of the operation transmission member, and a second wall portion 21 b that surrounds the entire periphery of the first wall portion 21 a. And between the 1st wall part 21a and the 2nd wall part 21b, the rib 21c which continues to the said 1st wall part 21a and the 2nd wall part 21b is provided with two or more with predetermined spacing.
Thus, between the 1st wall part 21a surrounding the perimeter of an action transmission member, and the 2nd wall part 21b surrounding the perimeter of the 1st wall part 21a, the said 1st wall part 21a and the 2nd wall part If a plurality of ribs 21c continuous with 21b are provided at a predetermined interval, the rigidity of the mounting portion 2 itself can be increased, and the force can be smoothly transmitted to the operation transmission member during normal operation. .

DESCRIPTION OF SYMBOLS 1 Operation lever 2 Mounting part 3 Grasp part 4 Connection part 5 Fragile part 21 Wall part 22 Engaging convex part 23 Through-hole 24 Exterior part 31 Grasping main body part 32 Grasping upper flange 33 Grasping lower flange 34 Auxiliary flange 35 Rib 41 Connecting main body part 42 Connecting upper flange 43 Connecting lower flange 44 Rib 44a End 44b End 45 Cylindrical hole

Claims (14)

An attachment portion attached to the operation transmission member;
A grasping unit grasped by the user;
A connecting portion for connecting the mounting portion to the grasping portion;
Have
A connection upper flange is formed on the upper edge of the connection part,
A lower connecting flange is formed on the lower edge of the connecting portion,
Wherein the said connecting upper flange and the connecting lower flange and the portion sandwiched between the upper and lower direction of the connecting portion, and the thick portion, and thinner portion is formed by connecting,
The thick portion is formed on the attachment portion side of the portion sandwiched in the vertical direction by the connection upper flange and the connection lower flange, compared to the thin portion, the connection upper flange and the connection lower portion It is a part where the thickness in the direction where the flange stands is thick,
The thin portion is formed on the grasping portion side of the portion sandwiched in the vertical direction by the connection upper flange and the connection lower flange, compared to the thick portion, the connection upper flange and the connection lower portion An operation lever characterized in that it is a thin portion in the direction in which the flange is erected . The operation lever according to claim 1,
The thick portion of the connecting portion is connected to the thin portion of the connecting portion at the central portion of the connecting portion. The operation lever according to claim 1 or 2,
The operation lever characterized in that the connecting portion is formed by integrally molding a thick portion and a thin portion with resin. In the operation lever as described in any one of Claims 1-3,
The operation lever, wherein the connecting portion is integrally formed of resin together with the mounting portion and the grasping portion. In the operation lever as described in any one of Claims 1-4,
The connecting portion functions as a weakened portion in which the vicinity of the end portion on the grasping portion side of the thick portion is weaker than other portions. In the operation lever as described in any one of Claims 1-5 ,
The operation lever, wherein the connecting portion extends obliquely upward from a lower end portion of the attachment portion. In the operation lever according to any one of claims 1 to 6 ,
The operation lever according to claim 1, wherein the thick portion of the connecting portion is a rib portion formed from an end portion on the attachment portion side to a central portion. In the operation lever according to any one of claims 1 to 7 ,
In the connecting part,
A connecting main body along a plane orthogonal to the rotation axis of the operation transmitting member;
A connection upper flange standing from the upper edge of the connection main body,
A connecting lower flange erected from the lower edge of the connecting main body,
A rib portion formed between the connection upper flange and the connection lower flange and formed from the end portion on the attachment portion side to the center portion is provided,
An operation lever characterized in that a weakened portion that is weaker than other portions is provided in the vicinity of the end portion of the rib portion on the grasping portion side. The operation lever according to claim 8 ,
The operation lever according to claim 1, wherein a plurality of cylindrical holes are densely formed in the rib portion. The operation lever according to claim 8 or 9 ,
An end of the rib portion on the connection upper flange side is farther from a vertical line passing through the rotation shaft of the operation transmission member than an end of the rib portion on the connection lower flange side. Operation lever. In the operation lever according to any one of claims 8 to 10 ,
The grasping unit
A grasping main body along a plane orthogonal to the rotation axis of the operation transmitting member, so as to be continuous with the connection main body,
A grasping upper flange standing from an upper edge of the grasping main body so as to be continuous with the connecting upper flange;
A grasping lower flange standing from a lower edge of the grasping main body so as to be continuous with the connecting lower flange;
An operation lever comprising: an auxiliary flange extending substantially in parallel with the grasping main body from a lower end of the grasping lower flange. The operation lever according to claim 11 ,
In the state where the grasping upper flange is located above the grasping portion, the grasping lower flange is located below the grasping portion, and these are arranged so as to extend in a substantially horizontal direction,
End of the side on which the grasping portion of the front Symbol grasp the lower flange is connected to the connecting portion opposite to the operation, characterized in that it is arranged above the upper end of the thick portion of the connecting portion lever. The operation lever according to claim 11 or 12,
In the state where the grasping upper flange is located above the grasping portion, the grasping lower flange is located below the grasping portion, and these are arranged so as to extend in a substantially horizontal direction,
The portion where the height in the vertical direction of the connecting portion is the largest is the vertical direction than the portion where the height in the vertical direction of the mounting portion is the largest and the portion where the height in the vertical direction of the grasping portion is the largest. The operating lever is characterized in that the height of the is small. The operation lever according to any one of claims 1 to 13,
The mounting portion includes a first wall portion that surrounds the entire circumference of the operation transmission member, and a second wall portion that surrounds the entire circumference of the first wall portion,
Between the first wall portion and the second wall portion, a plurality of ribs that are continuous with the first wall portion and the second wall portion are provided at a predetermined interval. Operation lever.

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