JPH0461641B2 - - Google Patents

Description

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

[Conventional technology]

For example, in the driver's seat of a car, the physique of the driver,
There are some that allow you to change the sitting height or sitting angle by adjusting the height or angle according to your preference.

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 rotation acting on the hinge arms is carried out. The seat frame is raised and lowered by movement, and the height is adjusted by operatively connecting an operating device to the hinge arm and operating the operating device. A friction brake device is employed as a locking mechanism to disable operation.

This friction brake device was developed in Japanese Patent Application Laid-open No. 59-
There is something disclosed in No. 29827. 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 rotatable relative to the drive shaft. A hanger is fixed to the seat by means of serrations, a handle is fixed to the drive shaft, and a connecting member of the seat lifting 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 braking 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.At the beginning of the rotation of the lever plate, it is swung by the engagement of the cam part and the lever plate, and the hanger is rotated. When the contact is released, a gap is formed between the hanger and the brake spring, which causes the braking spring to contract and weaken the pressing force against the inner peripheral surface of the brake drum, releasing the friction brake and rotating the driven shaft. It was made so that it could be done.

[Problem that the invention seeks to solve]

In this brake system, the driven shaft is friction-locked by the braking spring coming into pressure contact with the inner peripheral surface of the brake drum, so a large downward load, such as when an impact is applied to the seat, acts on the driven shaft, causing it to rotate. If force is applied, there is a risk that the brake spring will slide inside the brake drum and the seat will be lowered below the set height.Also, braking is performed by expanding and contracting the winding diameter of the brake spring, so the seat can be lowered to the desired height. It was difficult to lock the device accurately.

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

[Means for solving problems]

In order to solve the above technical problems, the present invention fixes the gear 31 to the frame via the mounting bracket 32 coaxially with the driven shaft 12, and
A base bracket 11 is inserted and fixed in correspondence with the gear 31, and a lock gear 15 that meshes with the gear 31 is rotatably attached to the inner surface of the base bracket 11 at a portion separated from the insertion portion of the driven shaft 12. A guide bracket 16 is rotatably attached coaxially to the insertion portion of the driven shaft 12 on the outer surface side of the bracket 11, and the lock gear 1 is attached to the outer surface of the bracket 11.
A pin 17 protruding from the guide bracket 16 is engaged with a deformed elongated hole 18 formed in the guide bracket 16, and an operation handle (hereinafter simply referred to as handle) 13 is attached to the base bracket 11 to be driven with respect to the base bracket 11. The handle 13 and the guide bracket 16 are connected to each other in the rotating direction of the shaft 12 and are attached to be extendable and slidable in the direction orthogonal to the shaft direction, and are interlocked via a wire assembly 21 and a protrusion 22 as interlocking members. It is composed of

[Effect]

The above technical means works as follows.

When the handle 13 is retracted and stored in the base bracket 11, the lock gear 15 is connected to the gear 31.
The base bracket 11 is locked with respect to the gear 31, that is, the driven shaft 12 is locked with respect to the frame.

Then, when the handle 13 is extended and slid, the guide bracket 16 is rotated via the wire assembly 21 and the protrusion 22 as interlocking members, so that the lock gear 15 locks the pin 17 that engages with the deformed elongated hole 18 of the guide bracket 16. The driven shaft 12 is rotated in a direction away from the lock gear 15 to release the lock. In this state, by grasping the extended and sliding handle 13 and pulling it up or pushing it down, the driven shaft 12 is rotated together with the base bracket 11. moved,
An adjustment mechanism connected thereto is actuated.

〔Example〕

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

1 to 3 show a first embodiment of the rotation operating device according to the present invention, and FIG. 4 shows an automobile seat using the rotation operating device as a height adjustment device. Figure 5 shows how the rotary operating device is attached to the cushion frame of the same seat.

The rotation operation device 10 shown in FIGS. 1 to 3 consists of a rotation side member and a fixed side member, and 11 is a driven shaft 12 connected to a height adjustment device described later, for example.
The base bracket 11 is a movable side member that is fixed to the base bracket 11. The base bracket 11 is formed into a box shape with a frame integrally formed on the outer periphery, and a guide tube 11a is provided on the upper edge to connect the outer tube 13a and the inner tube. An operation handle (hereinafter simply referred to as the handle) 13, which is formed by connecting cylinders 13b in a telescopic manner, is accommodated in an expandable and retractable manner, and a bush 14 is fixedly penetrated through the substantially central portion and is fixed to the driven shaft 12 by serrations. Ru. A lock gear 15 that meshes with a fixed gear, which will be described later, is pivotally attached to the inner surface of the base bracket 11 at a portion separated from the fixed portion to the driven shaft 12, and a guide bracket that engages with the lock gear 15 is attached to the outer surface of the base bracket 11. 16 are rotatably arranged around the bush 14. The engagement between the lock gear 15 and the guide bracket 16 is such that the protruding pin 17 of the lock gear 15 is inserted into the deformed elongated hole 18 formed in the guide bracket 16 via the guide groove 19 formed in the base bracket 11. A roller pin 20 is protruded from the tip of the guide bracket 16 and slides along the outer edge of the lock gear 15, that is, the side edge facing the meshing portion as the guide bracket 16 rotates. It is done like this.

The guide bracket 16 is connected to the outer cylinder 13a of the handle 13 via a wire assembly 21. That is, a protruding piece 22 is provided protruding from the outer cylinder 13a of the handle 13 to protrude into the base bracket 11 through an axial long hole 23 formed in the guide portion 11a, and a pin 24 is provided protruding from the protruding piece 22. A ring 25 of a required length fixed to one end of the wire assembly 21 is engaged, while a ring 26 fixed to the other end of the wire assembly 21 is a pin integrated with the roller pin 20 protruding from the tip of the guide bracket 16. 20a, attach the intermediate part of the wire part 21a of the wire assembly 21 to the base bracket 1.
The guide bracket 16 is engaged with the guide pin 27 protruding from the outer surface of the
is connected to the handle 13. In this way, in this example, the wire assembly 21 and the tongue piece 22 connect the handle 13 and the guide bracket 1.
6 and constitutes an interlocking member for interlocking.

Further, the guide bracket 16 has a spring 28 stretched between the raised piece 16a protruding from the rear edge side and the lower edge of the base bracket 11, and biases the lock gear 15 so as to rotate in the direction of the gear 31 at all times. A spring 29 is stretched between the tip of the inner tube 13b and the rear end of the guide tube 11a so that the handle 13 is always housed in the guide tube 11a.

Reference numeral 31 denotes a gear as a fixed member, which is fixed to a fixed body such as a cushion frame via a mounting bracket 32 coaxially with the driving shaft 12, that is, the gear 31 has an insertion hole for the driven shaft 12 in the center thereof. 31a is drilled, and an insertion hole 32a is also drilled in the mounting bracket 32. With both holes 31a and 32a aligned, the gear 31 and the bracket 32 are connected with a rivet 33, and the mounting bracket 32 is assembled. Fix to a fixed body.

Next, the operation of the rotary operating device 10 composed of a movable member and a fixed member as described above will be explained.
When the outer cylinder 13a is retracted and stored, the protruding piece 22 of the outer cylinder 13a is in the retracted position, and the pin 24 protruding from the outer cylinder 13a is in the retracted position.
corresponds to the rear end of the elongated hole ring 25 of the wire assembly 21, and no traction force is applied to the wire assembly 21, and in this state, the guide bracket 16 is pivoted downward by the spring 28 and is connected to the pin. The lock gear 15, which is engaged through the lock gear 17, is engaged with the gear 31 as a fixing member in a state where the roller pin 20 is rolled into contact with the outer edge side of the tip and is pressed (the state shown in FIG. 1), and the base bracket 11
cannot rotate and the driven shaft 12 is in a locked state.

When the handle 13 is pulled out halfway from this state, that is, when the inner tube 13b is pulled out, the outer tube 13a is also pulled out a small amount and the protrusion 22 is also moved forward, but since this amount of movement is small, the pin 24 is Since the wire assembly 21 is simply moved within the hollow of the elongated ring 25 to the front end, no traction force is applied to the wire assembly 21, and therefore the guide bracket 16 and lock gear 15 are not operated and the driven shaft 12 The locked state is maintained (FIG. 3A).

Then, when the handle 13 is pulled out to the most extreme position, the outer cylinder 13a is also pulled out by a predetermined length, and the protruding piece 22 moves forward, which causes the wire assembly 21 to be pulled via the pin 24, and the guide bracket 16 is pulled out by the spring 28. Pull up and rotate against the biasing force. Due to the upward rotation of the guide bracket 16, the pin 17 of the lock gear 15 is pressed by the edge of the deformed elongated hole 18, so that the lock gear 15 is rotated backward, that is, in a direction away from the gear 31, and the lock gear 15 is disengaged from the gear 31.
The driven shaft 12 is unlocked.

In this state, by pulling up and pushing down the pulled out handle 13 while grasping it, the driven shaft 1
2 is rotated via the base bracket 11, and an adjustment mechanism connected to this driven shaft 12 is actuated.

When the user releases the handle 13 after rotating the driven shaft 12 by a desired amount in this manner, the handle 13 is contracted by the biasing force of the spring 29 and is housed in the guide tube portion 11a. That is, while the inner cylinder 13b is inserted into the outer cylinder 13a, the outer cylinder 13a is inserted and stored in the guide cylinder part 11a, and this operation causes the protrusion 22 to move rearward and connect the wire assembly 21 via the pin 24. Therefore, the guide bracket 16 is rotated downward again by the biasing force of the spring 28, and the lock gear 15 is rotated forward by the engagement between the pin 17 and the elongated hole 18, and the gear 31 is rotated forward. The driven shaft 12 is locked in the aforementioned rotational state, and the adjustment mechanism is maintained in its operating state.

To further change from this operating state or return to the original state, the above-described unlocking and rotation operations of the driven shaft 12 are performed.

A case in which the rotary operating device 10 configured and operated as described above is used, for example, as an operating device for a lifter mechanism of an automobile seat will be described with reference to FIGS. 4 and 5.

FIG. 4 shows the entirety of an automobile seat equipped with the above-mentioned rotary operating device, and this seat 41 is attached to the floor of the vehicle body via a slide rail 42 of a seat adjuster.

The seat cushion 41a has a built-in lifter mechanism R described later, which is connected to the rotation operating device 1 described above.
Slide rail 42 by operating with 0
The height of the seat cushion 41a is adjusted.

FIG. 5 shows how the lifter mechanism R is attached to the seat cushion 41a, that is, the cushion frame 43, and each member of the lifter mechanism R is disposed between the front and rear of the cushion frame 43 and the slide rail 42. . That is, the front member of the lifter mechanism R has a lifter operating shaft 44 rotatably horizontally mounted on the front part of the cushion frame 43, and both ends of the lifter operating shaft 44 are mounted on bearings provided at the front parts of both sides of the cushion frame 43. 45, and an arm 46 is fixed to the lifter operating shaft 44 located inside both sides of the frame, and the free end of this arm 46 is pivotally connected to a leg 47. . The leg body 47 is fixed to the vehicle floor side, in this example, to the upper rail 42a of the slide rail 42 by a fixing member such as a bolt or nut.

The rear member of the lifter mechanism R is constructed by having an arm 48 pivoted on the rear inside of both sides of the cushion frame 43, and pivoting the free end of this arm 48 to a leg 49. 49 is also fixed to the vehicle floor side, in this example, to the rear of the upper rail 42a by a fixing member. The legs 47 and 49 are fixed to the upper rail 42a by connecting the fixing point of the front arm 46 to the lifter movement axis 44, that is, the straight line connecting the pivot point to the cushion frame side and the pivot point to the leg 47, and the rear arm 48. This is done so that the points connecting the pivot point to the cushion frame side and the pivot point to the leg body 49 are parallel to each other.

Both ends of a connecting link 50 are pivotally attached to the front and rear members of the lifter mechanism R, that is, approximately in the middle between one arm on the front side and one arm on the rear side, and the lifter operating shaft 44 is equipped with a torsion coil spring. 51 is wound, and one end 51a thereof is locked to a knock pin 52 protruding from the operating shaft 44.
The other end 51b is locked to a retainer 53 protruding from one side of the cushion frame 43 so that the arm 46 is rotated in the upright direction about the pivot point to the leg 47 on the lifter operating shaft 44. It imparts bias. The rotation of the arm 46 is transmitted to the rear arm 48 via the connecting link 50, and this arm 48 is also rotated in the upright direction about the pivot point to the leg pair 49, so that the cushion frame 43 is moved to the slide rail. 42, it is always biased in the upward direction.

The above-mentioned rotary operating device 10 is used as an operating device for the lifter mechanism R that biases the cushion frame 43 in the upward direction.
Attach to the end of the lifter operating shaft on the outer surface of one side of the lifter.

That is, the mounting bracket 3 to which the gear 31 is fixed
2 is fixed to the outer surface of the frame 43 with a fixing member 54 such as a bolt or nut, with the end of the driven shaft 12 protruding from the insertion hole connected to the refume movement shaft 44 by serrations.

As described above, by operating the rotation operating device 10 attached to the lifter mechanism R, the lifter mechanism R
is activated and locked, and the cushion frame 43
The height can be variably adjusted.

That is, when the rotation operating device 10 is pulled out of the handle 13 as described above to separate the lock gear 15 from the gear 31 and unlock the driven shaft 12, the lifter mechanism R moves upward by the biasing force and lifts the cushion frame 43. By retracting the handle 13 at the desired height, the lock gear 15 meshes with the gear 31 and the driven shaft 1
2 is locked, and the cushion frame 43 is held fixed at that height. In this way, the height of the seat 41 can be variably adjusted as desired.

In addition, in the lifter mechanism R described above, the rear arm 48 and the connecting ring 50 are removed, and the rear part of the cushion frame 43 is directly pivotally connected to the rear script 49, whereby a tilt mechanism is constructed, and the lifter operation as described above is achieved. By rotating the shaft 44, the height of only the front side of the cushion frame 43, that is, the inclination angle of the seat cushion 41a 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.

The rotation operating device 10 of the first embodiment was configured such that the guide bracket 16 that engages with the lock gear 15 and rotates it is rotated by the sliding of the handle 13 via the wire assembly 21. It is also possible to directly transmit the sliding force of the handle 13 to the guide bracket 16 and rotate it.

That is, as shown in FIGS. 6 and 7, the rotary operating device 10 of the second embodiment is constructed of only the protrusion 22 without using the wire assembly 21 as the interlocking member. The roller pin 20 and the pin 24 of the projecting piece 22 protruding from the outer cylinder 13a of the handle 13 are eliminated, and on the other hand, the shaft support of the guide bracket 16 relative to the base bracket 11 is extended to the vicinity of the guide cylinder part 11a, and the projecting piece of the handle 13 is removed. A bent piece 61 corresponding to the front edge of the base bracket 11 is formed, and the guide bracket 16 has a protruding piece 16a protruding from the rear edge of this extension, and a spring 28 is inserted between this and the rear edge of the base bracket 11. The lock gear 15 is always biased so that it is rotated in the direction of the gear 31. In addition, lock gear 15 and guide bracket 16
The pin 17 that engages the deformed long hole 18 has an inverse relationship,
That is, a deformed elongated hole 18 is formed in the lock gear 15,
A pin 17 is provided protruding from the guide bracket 16.

According to this configuration, when the protruding piece 22 is moved forward by pulling out the handle 13, it comes into contact with the bent piece 61 of the guide bracket 11 and presses it, so that the guide bracket 11 rotates upward. As a result of this rotation, the pin 17 moves while pushing the edge of the deformed elongated hole 18, and the lock gear 15 is rotated backward, that is, in a direction away from the gear 31, and the lock gear 15 is disengaged from the gear 31, as in the first embodiment. Similarly, the driven shaft 12 is unlocked.

Further, by sliding the handle 13 in a contracted manner, the projecting piece 22 is moved rearward, that is, in a direction away from the bent piece 61 of the guide bracket 11, so that the guide bracket 11 is rotated back downward by the biasing force of the spring 28. Along with this, lock gear 1
5 is also rotated forward and meshed with the gear 31, and the driven shaft 12 is locked.

The rotary operating device 10 of the second embodiment configured in this manner can also be applied to an operating device that operates an adjustment mechanism such as a seat lifter mechanism and locks the seat at a desired position.

In the above first and second embodiments, the handle 13
Although the handle 13 is constructed in a two-stage telescopic type with an outer cylinder 13a and an inner cylinder 13b, it may be constructed in a two-stage or more telescopic type. In the case of this one-piece configuration, the handle pull-out length and the moving length of the protrusion 22 that operates the guide bracket 16 are the same, and therefore, mechanically, the handle pull-out length is longer than that of the telescope type. be shortened.

Further, the positional relationship of the lock gear 15 and the guide bracket 16 with respect to the gear 31 may be reversed, that is, they may be located on the front side, and the teeth of the gear 31 may be provided corresponding to the rotation range of the driven shaft 12 instead of being provided around the entire circumference. That's fine. Other members are not limited to the embodiments, and can be implemented in various ways.

〔Effect of the invention〕

As described above, according to the present invention, the driven shaft connected to the adjustment mechanism is locked by the meshing of the gear and the lock gear, so that it is accurately locked at the desired rotational position and no impact load is applied to the driven side. It is securely held in its position without wobbling or slipping, and the unlocking operation is performed by sliding the handle, and after the lock is released, no resistance is exerted on the driven shaft. The operating force can be reduced,
The rotation operation on the driven side can be performed smoothly, and in this way, the two operations of unlocking and rotation on the driven side can be performed with one operation handle, improving operability.Moreover, the configuration is simple and the number of parts is reduced. Since the rotation operation device according to the present invention is made into a unit, it is possible to reduce the cost by attaching a base bracket to the driven shaft of an adjustment mechanism, such as a lumbar support of a vehicle seat, a thigh support, a headrest back and forth movement mechanism, etc. It can be assembled just by installing it,
This has the effect of simplifying the assembly.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional external view of a first 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 FIG. 3 shows the operating state of the device shown in FIG. 1. FIG. 4 is a side view of an automobile seat equipped with a rotation operating device according to the present invention, and FIG.
FIG. 6 is a partially exploded perspective view of the cushion frame of the seat shown in FIG. FIG. 3 is a side view of main parts showing an operating state. In the figure, 11 is a base bracket, 12 is a driven shaft, 13 is an operating handle, 13a is an outer cylinder, and 13b
1 is an inner cylinder, 15 is a lock gear, 16 is a guide bracket, 17 is a pin, 18 is a long hole, 21 is a wire assembly, 22 is a protrusion, and 31 is a gear. 2 is a mounting bracket, and 61 is a bent piece.

Claims (1)

[Scope of Claims] 1. A base bracket fixed to a driven shaft rotatably supported by a frame; a base bracket rotatably supported by the base bracket;
a lock gear that meshes with a gear fixed to the frame; a guide bracket that is rotatably attached to the base bracket and moves the lock gear toward and away from the gear; and a guide bracket that engages the driven shaft with respect to the base bracket. an operating handle that engages in the rotational direction and is slidably mounted in the axial and orthogonal directions, and is provided between the operating handle and the guide bracket, the guide bracket being interlocked with the extension and sliding movement of the operating handle. and an interlocking member that rotates the guide bracket by extending and sliding the operation handle to rotate the guide bracket to separate the lock gear from the gear and release the lock of the base bracket from the frame. . A rotation operating device, characterized in that the driven shaft is rotated by the operating handle via the base bracket.