JPS61222830A - Rotation control device - Google Patents

Abstract

PURPOSE:To lock a seat level control device or the like surely as well as to perform smooth lock release and rotation control, by locking a driven shaft with gear engagement, while performing the lock release with extensional slide motion of a handle. CONSTITUTION:A gear is locked to a frame concentrically with a driven shaft 3 via a setting bracket 22 and a base bracket 2 is insertionally locked thereinto, while a lock gear 6 to be engaged with a fixed gear 21 at the inner surface side of the base bracket is rotatably attached to a part from an insertion part of the driven shaft 3, and a pin 8 is engaged with a deformed long hole 9 at the outer surface side of the base bracket 2. In addition, a slidable handle 4 is installed in the base bracket 2, attaching a slide member 13 to this handle 4, while a cam surface 12a is installed in a guide bracket 7, and this handle 4 is interlocked with the guide bracket 7 via the slide member 13 and the cam surface 12a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rotation operating device, particularly to an operating device for a height or angle adjustment device of a seat in an automobile or the like.

[Conventional technology]

For example, some driver's seats in automobiles or the like have a height or an angle that can be changed depending on the physique or preference of the driver.

In the known automobile seat constructed in this way, the hinge arms provided at the front and rear of the seat frame are pivotally supported by the legs fixed to the seat adjuster arranged on the vehicle floor side, and the pivoting action is applied to the hinge arms. The seat frame is raised and lowered by the hinge arm, and an operating device is operably connected to the hinge arm, and when the operating device is operated, the height is adjusted by K. A friction brake device is used as a locking mechanism to disable operation.

This friction brake device is disclosed in Japanese Patent Application Publication No. 59-2982.
There is something disclosed in No. 7. In other words, this device includes a brake drum fixed to the seat frame, a lever plate fixed to a drive shaft supported by a center hole in the bottom wall of the drum, and a lever plate fitted to the drive shaft so as to be relatively rotatable. A hanger fixed to the shaft with serrations is provided, a handle is fixed to the drive shaft, and a connecting member of the seat elevating mechanism is attached to the driven shaft. A pair of guides is arranged between the lever plate and the hanger, and these guides are connected to both ends of a brake spring that is pressed against the inner peripheral surface of the brake drum. It has a contact part that stops the movement of the lever plate, and a cam part that engages with the lever plate when the lever plate rotates. When the contact with the hanger is released, a gap is formed between the brake spring and the hanger, and this gap reduces the diameter of the braking spring, weakening the pressure force against the inner circumferential surface of the brake drum, releasing the friction brake, and tightening the driven shaft. K so that it can be rotated.

[Problems to be Solved by the Invention] In this brake device, the driven shaft is configured to be frictionally locked by the braking spring coming into pressure contact with the inner peripheral surface of the brake drum. If a large load is applied and rotational force is applied to the driven shaft, the brake spring may slide inside the brake ram, potentially lowering the seat below the set height, and the diameter of the brake spring may not be expanded or contracted. Because of the braking effect, it was difficult to accurately lock the seat at a desired height. Furthermore, during operation, a so-called dragging phenomenon occurs in which the braking spring slides against the inner circumferential surface of the brake drum, making the operation difficult.

In view of the above, the present invention has a structure in which the driven shaft is locked by gear meshing, and unlocking is performed by extension and sliding of the handle, thereby ensuring that the seat height adjustment device etc. linked to the driven shaft can be adjusted securely. It is an object of the present invention to provide a rotation operation device that can be locked and smoothly unlocked and rotated.

[Means for solving problems]

In order to solve the above technical problem, the present invention fixes a gear (goods) to the frame via a mounting bracket coaxially with the driven shaft (3), and fixes the gear (goods) to the driven shaft (3). ), and a lock gear (6) that meshes with the fixed gear a1 is spaced apart from the insertion part of the driven shaft (3) on the inner surface of the base bracket (2). The guide bracket (7) is rotatably attached coaxially to the insertion part of the driven shaft (3), and the lock gear (6) K is protruded from the outer surface of the base bracket (2). (8) is engaged with the deformed elongated hole (9) formed in the guide bracket (7), and the base bracket (2) K is the slidable handle (4).
), and a sliding member (to) is attached to this handle (4), and a guide bracket (7) Ic cam surface (12 m
) is provided with this handle (4) and guide bracket (7).
and are configured to interlock with each other via the sliding member υ and the cam surface (12m).

[Effect]

The above technical means works as follows.

Is the lock gear (6) a fixed gear when the handle (4) is stored in the base bracket (2)? The base bracket (2) is meshed with the fixed gear Q2),
That is, the driven shaft (3) is locked to the frame.

When the handle (4) is slid in this state, the guide bracket (7) connects the sliding member (to) as a connecting member and the cam surface (
12 m), and for this reason the lock gear (6)
is rotated in a direction away from the mouth/tsukug gear (6) via the pin (8) that engages with the deformed elongated hole (9) of the guide bracket (7), and the lock is released, and in this state it extends and slides. By grasping the handle (4) and pulling it up or pushing it down, the driven shaft (3) is rotated together with the base bracket (2), and the adjustment mechanism connected thereto is driven.

〔Example〕

Embodiments of the present invention will be specifically described with reference to the drawings.

1 to 4 show an embodiment of the rotation operating device according to the present invention, FIG. 5 shows an automobile seat using the rotation operating device as a height adjustment device, and FIG. The figure shows the state in which the rotation operating device is attached to the cushion frame portion of the same seat.

The rotation operation device (1) shown in FIGS. 1 to 4 consists of a rotation side member and a fixed side member, and (2) is a driven shaft (3) connected to a height adjustment device described later, for example. The base bracket (2) is a movable side member that is fixed in place.The base bracket (2) is formed into a box shape with a frame integrally formed on the outer periphery. Tube (
41) and an inner cylinder (4b) connected in a telescopic manner, a handle (4) is accommodated in a telescopic manner, and a bush (5) is fixedly fixed to the driven shaft (3) approximately in the center. is fixed with serrations.

This base bracket (2) has a driven shaft (3) on the inner surface.
A lock gear (6) that meshes with a fixed gear, which will be described later, is pivotally attached to a part tym apart from the fixed part with the bushing. ) is arranged so that it can rotate around the center.

The engagement between the lock gear (6) and the guide plaque (7) is achieved by inserting the pin (8) protruding from the lock gear (6) into the guide plaque (7) into the deformed elongated hole (9) formed by the K, and the base bracket (2). The insertion and engagement is performed by K through the guide hole αQ formed in the guide bracket (7), and a roller pin α is protruded from the tip of the guide bracket (7) so that the roller pin α is inserted into the outer edge of the lock gear (6), that is, the engagement portion. The guide bracket (7) is configured to come into sliding contact with the opposing side edge as the guide bracket (7) rotates.

And on the upper side of this guide bracket (7) is a cam piece (
6) is formed protrudingly, and this cam piece (6) has a handle (
The sliding contact member (to) attached to the outer cylinder (4a) of 4) is brought into sliding contact.

This sliding contact member 0 is constructed by supporting the roller (2) in a cantilevered manner by a pin aQ on a bracket α→ fixed to the outer cylinder (4 holes) of the handle (4), and the bracket α4 is attached to the base. The cam piece (2) of the guide bracket (7) protrudes into the base bracket (2) through the long axial hole α formed in the guide cylinder part (2m) of the bracket (2). It is in rolling contact with the lower cam surface (12a) of.

In addition, the guide bracket (7) has a spring α 樟 stretched between the cut-out piece (7a) protruding from the approximate center thereof and the lower edge of the base bracket (2), so that the lock gear (6)
The handle (4) is biased so as to rotate in the direction of a fixed gear (to be described later), and the handle (4) is connected to the tip of the inner cylinder (4b) and the guide cylinder so that it is always stored in the guide cylinder part (2a) of the base bracket (2). Spring (to) between the rear end of part (2 &)
is being stretched.

Q is a fixed gear as a fixed side member, and is coaxially fixed to the above-mentioned driven shaft (3) via a mounting bracket (2) to a fixed body such as a cushion frame.
An insertion hole (211L) for the driven shaft (3) is drilled in the center of the mounting bracket (A).
2 m) are drilled, and with these holes (21 m) and (22 m) aligned, the fixed gear eη and the bracket mechanism are connected with rivets to fix the mounting bracket to the fixed body.

Next, to explain the operation of the rotary operating device (1) consisting of the movable side member and the fixed side member as described above, the handle (4)
When the outer cylinder (4a) K is contracted and stored in the guide cylinder part (2m) of the base bracket (2), the bracket α4, which serves as a sliding member attached to the outer cylinder (4a), is in the retracted position, and the roller (up to ) is in rolling contact with the cam surface (i2a) of the cam piece (2) of the guide bracket (7) at its rear end, that is, on the shaft support side of the guide bracket (7), so that the guide bracket (7) A lock gear (6) which is rotationally biased downward by a spring 01S and engaged through a pin (8) has a roller pin Q on the outer edge side of the tip.
l) is rotated and pressed and meshed with the fixed gear (b) as the fixed side member (state shown in Figure 1), the base bracket (2) cannot rotate and the driven shaft (3) is locked. in a state.

When the bracket α4 is moved forward by pulling out the handle (4) from this state, the roller (to) is moved to the cam surface (12) of the cam piece (6) of the guide bracket (7).
a), and a pulling force is applied to the cam piece (2). Therefore, the guide bracket (7) rotates around the shaft supported by the bush (5), and the spring α is rotated upward against the biasing force of
The pin (8) of this lock gear (6) is pushed by the edge of the deformed elongated hole (9) and is rotated backward, that is, in a direction away from the fixed gear. The engagement with υ is released, and the driven shaft (3) is unlocked (see Fig. 3).

In this state, the driven shaft (3) is rotated via the base bracket (2) by pulling it up and pushing it down while grasping the pulled out No.Ple (4).
) is actuated.

When you release your hand from the handle (4) after rotating the driven shaft (3) by the desired amount in this way, the handle (4) is contracted by the biasing force of the spring (2 and 3).
). That is, the inner cylinder (4b) is not inserted into the outer cylinder (4a), but the outer cylinder (4a) is inserted into the guide cylinder part (2a) and stored, and by this operation, the bracket α→ is moved rearward and the roller (To) The cam surface (12m) of the cam piece (6) of the guide bracket (7) rolls backward to release the lifting of the cam piece (6) K. Therefore, the guide bracket (7) The biasing force of the spring α causes the lock gear (6) to rotate downward, and the lock gear (6) is rotated forward by the engagement of the pin (8) and the elongated hole (9), engaging the gear 01) Ic and locking the driven shaft. (3) is locked in the aforementioned rotational state, and the adjustment mechanism is held in its operating state (see Figure 4).

To further change from this operating state or return to the original state, the driven shaft (3) is unlocked and rotated as described above.

In the above configuration, the sliding member (
) consists of a roller (to) that is pivotally supported on the bracket α4, and the roller (to) is attached to the cam piece (6) of the guide bracket (7).
), so that when the lock gear (6) is unlocked, the handle (4) can be smoothly slid out to rotate the guide bracket (7). The power becomes lighter as o-5α→ moves in the front direction of the cam piece (6), that is, in the direction away from the shaft support of the guide bracket (7). On the other hand, the guide bracket (7) has a roller (
Due to the movement of c), the tensile force by the spring α will act strongly in the opposite direction to the direction in which it is rotated, and therefore,
This increase in tensile force is offset by the above-mentioned decrease in sliding force, so that the sliding force for pulling out the handle (4) and the immediate operation force are always constant.

Also, the contraction operation of the handle (4), that is, the lock gear (6)
) is locked by the spring (to) K of the handle (4).
The rotational force of the spring α of the guide bracket (7) is added to the retraction force by the roller (to), and the handle (4) is quickly retracted and the guide bracket (7) is also returned to its original position. The lock gear (6
) meshes with the fixed gear (c), which is a hard-waxed member, and the base bracket (2), which is fixed to the driven shaft (3), is locked again to the fixed body.

In the above embodiment, the handle (4) is outside m (4 m)
Although the inner cylinder (4b) is configured as a two-stage telescope type, this may be configured as a two-stage or more telescope type.
Further, the handle (4) may be composed of a single rod or a cylinder, and in the case of this single-piece construction, the handle drawer length and the bracket as a sliding member that operates the guide bracket (7) 04 The length of movement of the two types is the same, so mechanically the handle pull-out length is shorter than that of the telescoping type. In addition, as the sliding member (2), in addition to the one in which the roller (to) is pivotally supported on the bracket α◆ as described above, the bracket α→ is connected to the cam piece of the guide bracket (7) without using the roller (to). (6) It operates in the same manner as described above even if it is configured to be brought into direct sliding contact. Note that the cam piece (b) of the guide bracket (7) may be formed on the lower edge side.

In addition, the positional relationship of the lock gear (6) and the id bracket (7) with respect to the fixed gear 01) K may be reversed, that is, they may be located on the front side, and the teeth of the fixed gear 01) are not provided on the entire circumference and are driven. It may be provided corresponding to the rotation range of the shaft (3). Other members are not limited to the embodiments, and can be implemented in various ways.

Next, the rotation operating device (
1) will be described with reference to FIGS. 5 and 6, for example, when the device is used as an operating device for an automobile seat lift mechanism.

FIG. 5 shows the entirety of an automobile seat equipped with the above-mentioned rotary operating device (1), and this seat 0 is attached to the vehicle body floor via the slide rail 0 of the seat adjuster.

The seat cushion (31a) K has a built-in sliding mechanism R to be described later, and when this is operated by the above-mentioned rotation operating device (1), the seat cushion (31a) is raised and lowered from the slide rail Oa by the K. height is adjusted.

Figure 6 shows how the lifter mechanism R is attached to the seat cushion (31a), that is, the cushion frame (A), and each member of the lifter mechanism R is installed between the front and rear of the cushion frame (to) and the slide rail 0■. will be placed.

That is, the front member of the seven-point mechanism R has a lifter operating shaft (b) horizontally mounted on the front part of the cushion frame (to) so as to be rotatable, and its both ends are attached to both sides of the cushion frame (to). It is supported by a bearing (to) provided at the front, and an arm (b) is fixed to this lifter operating shaft (b) located inside both sides of the frame, and the free end of this arm (c) is fixed to the lifter operating shaft (b). It is constructed by pivotally attaching the part to the leg (b). The legs (b) are fixed to the vehicle floor side, in this example, to the upper rail (32 m) of slide rail 02 by a fixing member such as a gel nut.

The rear member of the 7-point mechanism R is a cushion frame (
The arm (to) is pivoted to the rear inside of both sides of the to, and the free end of this arm (to) is pivotally attached to the leg (a), and this leg (2) is also attached to the vehicle body. It is fixed to the floor side, in this example, to the rear of the upper rail (32 m) by a fixing member. Note that the legs (B) and (2) are fixed to the upper rail (32 m) by the front arm (to) glue 7 - the fixing point to the movement axis (B), that is, the pivot point to the cushion frame side and the leg ( W connecting the pivot points for (b)
Do this so that the line connecting the pivot point of the rear arm (to) to the cushion frame side and the pivot point of the rear arm (to the leg) are parallel to each other.

Both ends of the connecting link are pivotally connected at approximately the middle of the front and rear members of this lifter mechanism, that is, one arm on the front side and one arm on the rear side, and the lifter operation axis (b) has a torsion A coil spring (6) is wound, one end (41a) of which is locked to a dowel pin (6) protruding from the operating shaft (b), and the other end (41b) connected to the -side of the cushion claim (end). A retainer UK protruding from the lifter is engaged with the lifter operating shaft NK arm (c) to apply a biasing force so that the lifter operating shaft NK arm (c) rotates in the upright direction about the pivot point to the leg (b). The rotation of the arm (to) is controlled by the connecting link (
6) to the rear arm (B), and this arm (2) is also rotated in the upright direction around the pivot point to the leg body (A), so that the cushion frame (to) is moved along the slide rail ( 31, it is always biased in the upward direction.

As the operating device of the lifter mechanism R that biases the cushion frame 0 in the upward direction, the above-mentioned rotation operating device (1) is attached to the outer surface of the cushion frame (toward) at the end of the operating axis of the lifter. Attach accordingly.

That is, the mounting bracket (a) to which the fixed gear Q1) is fixed is attached to the frame 0 with the end of the driven shaft (3) protruding from its insertion hole connected to the lifter operating shaft (b) by serrations. Fix to the outside surface using fixing tools such as gel nuts and nuts.

As described above, the rotation operation device (
By operating 1), the lifter mechanism R is activated and hillocked, and the height of the cushion frame can be variably adjusted.

That is, the rotation operating device (1) is rotated as described above.
) by pulling out the fixed gear 01) to the lock gear (
6) to release the lock on the driven shaft (3), the lid mechanism R moves upward due to its biasing force, lifts up the cushion frame (top), and lifts the handle (4) at the desired height. By contracting, the lock gear (6) is meshed with the fixed gear ρ, the driven shaft (3) is locked, and the cushion frame (to) is fixedly held at that height.

In this way, the height of the seat 0]) can be variably adjusted as desired.

In addition, the tilt mechanism can be created by removing the rear arm (C) and connecting link (6) in the above-mentioned lid mechanism R and directly pivoting the rear part of the cushion frame 0→ to the rear leg body (A). By rotating the lifter operating shaft (b) as described above, the height of only the front side of the cushion frame (to), that is, the inclination angle of the seat cushion (31 m) can be adjusted.

Further, the lifter mechanism and tilt mechanism to which the rotation operating device according to the present invention is applied are not limited to the above-mentioned ones, but may be a mechanism equipped with an operating axis that is always rotationally biased in one direction by a biasing means. Good to have e [Effect of the invention] Since it is locked, it is accurately locked at the desired rotational position and is securely held at that position without rattling or slipping even when an impact load is applied to the driven side. Moreover, the unlocking operation is performed by sliding the handle and rotating the guide bracket that engages with the lock gear by sliding the sliding contact member on the cam surface of the guide bracket, which allows the operation to be performed extremely smoothly. After the lock is released, no resistance is applied to the driven shaft, reducing the operating force and allowing smooth rotation of the driven side.Moreover, the configuration is simple and the number of parts is small, reducing costs. This has the effect of making it possible.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional external view of an embodiment of the rotation operating device according to the present invention, FIG. 2 is an exploded perspective view of the device shown in FIG. 1, and FIGS. 3 and 4 are operations of the device shown in FIG. 1. FIG. 5 is a side view of an automobile seat equipped with a rotation operating device according to the present invention, and FIG. 6 is a partially exploded perspective view of the cushion frame portion of the seat shown in FIG. 5. be. In the figure, (2) is the pace platen), (3) is the driven shaft, (
4) is the handle, (4a) is the outer cylinder, (4b) is the inner cylinder, (
6) is the lock gear, (7) is the guide bracket, (8)
is a pier, (9) is a long hole, (6) is a cam piece, (12m) is a cam surface, (to) is a sliding contact member, o4 is a bracket, (to)
Hey Laura,? ■ is a fixed gear, the handle is a mounting platen), (
3:3 is the cushion frame as the fixed side member.

Claims (1)

[Claims] A base bracket fixed to a rotated shaft that is rotatably supported by a fixed side member, a lock gear that meshes with a fixed gear fixed to the frame, and a guide that moves the lock gear toward and away from the gear. The bracket is rotatably provided and the handle is slidably provided, the guide bracket is provided with a cam surface, and the handle is provided with a sliding member that slides in contact with the cam surface, and the above-mentioned effect due to the sliding of the handle is provided. The guide bracket is rotated by sliding contact of the sliding contact member with the cam surface, the lock gear is separated from the gear to release the lock, and the rotated shaft is rotated via the base bracket. A rotation operating device characterized by: