JPH0895657A - Control knob attachment structure - Google Patents

Abstract

PURPOSE: To provide such a control knob that can be attached and detached without using any screw nor pin for attachment of the knob main body. CONSTITUTION: A control knob 6 which is manually and externally turned is attached at the outside end of a shaft member 7 that is extended to the outside from a device main body. A shaft hole part 12 is formed at the inside center part of the main body 10 of the knob 6 so that the tip part of the member 7 is pressed into the part 12. An engagement groove part 13 is formed at a position near the tip of the member 7 pressed into the part 12. The locking pawl parts 14 that are engaged with the part 13 by the elastic deformation are formed in a body inside the main body 10. A slit is formed at a cylinder part 16 that forms the part 12 at the inside center part of the main body 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation knob mounting structure for easily performing a manual rotation operation of a shaft member such as a driven shaft in an operation knob used in a vehicle seat.

[0002]

2. Description of the Related Art For example, in a vehicle seat, a front / rear position adjusting device for a movable headrest, a reclining device for a seat back, a vertical position adjusting device for a seat cushion, a walk-in device, a lumbar support, a rhe support, etc. The rotation position adjustment device of the support device, etc.
The seat is provided so that it can be adjusted arbitrarily according to the body shape and preference of the seated person.

Here, depending on these mechanisms, in order to perform the adjustment, an adjusting mechanism composed of a rotary shaft and displacement transmitting means thereof is generally adopted. Further, according to such an adjusting device, an operating knob is generally adopted which allows the adjusting device to properly operate by a simple pivoting operation thereof and to perform a desired adjusting operation easily and surely.

[0004]

However, each of the conventionally known operation knob mounting structures has merits and demerits, and inevitably causes practical problems such as operability and design. It was a thing.

That is, as a conventional general operation knob mounting structure, the knob body of the operation knob is a fastening component such as an assembly screw or an assembly pin with respect to a rotary shaft or the like which is a shaft member. It was usually performed by using a locking component or a locking component.

However, in such a structure, screws, pins, etc. are required for assembling, and not only the number of constituent parts is large, but also the assembling work is complicated and a problem occurs in terms of assembling operability. Was there.

Further, with the above-mentioned screws and pins, it is unavoidable that they can be seen from the outside of the knob body, and it is necessary to provide a separate cover for the operation knob in addition to the knob body. It was

Further, when fixing with the above-mentioned screws or pins, the knob main body can be mounted relatively easily, but the attachment and detachment is troublesome and complicated, and there is a problem in terms of operability upon removal. It is desired to take some measures to eliminate such problems.

The present invention has been made in view of the above circumstances, and when assembling the knob main body constituting the operation knob to the end portion of the shaft member, the conventional fastening parts such as screws and pins, and the hanging parts. An object of the present invention is to obtain an operation knob mounting structure that does not require a stop component, allows the knob body to be attached to and detached from the shaft member, and has no external appearance.

[0010]

In order to meet such a demand, the operating knob mounting structure according to the present invention is provided with an outer end of a shaft member extending outward from the main body of the apparatus and is manually rotated from the outside. A shaft hole portion into which the tip end portion of the shaft member is press-fitted is formed in a central portion of the inside of a knob body that constitutes the operation knob that is dynamically operated, and a portion near the tip end portion of the shaft member press-fitted into the shaft hole portion is formed. An engaging groove portion is formed in the portion, and a locking claw portion that is engaged with the engaging groove portion by elastic deformation is integrally formed inside the knob body.

Further, the operating knob mounting structure according to the present invention is characterized in that the tubular portion forming the shaft hole portion in the inner central portion of the knob body is
It is configured such that a slit is formed and a locking claw portion that is engaged with an engaging groove portion formed near the tip of the shaft member is formed in a state that can be engaged with the slit.

Further, the operating knob mounting structure according to the present invention is formed by penetrating an axial hole portion into which a tip end portion of a shaft member is press-fitted into an inner central portion of a knob body forming the operating knob. The tip portion of the shaft member is press-fitted from the inside of, and the lid member is fitted and fixed to the outside of the shaft hole portion.

[0013]

According to the present invention, the tip end portion of the shaft member is press-fitted into the shaft hole portion in the inner central portion of the knob body in the operation knob to prevent rotation by serration coupling or the like, and at the time of this press-fitting, the operator's hand The locking claw that was elastically deformed in the radial direction with a tool or other tool is returned to its original state, and is engaged with the engagement groove near the tip of the shaft member to prevent it from coming off. The knob body can be attached. On the contrary, when the engaging claw portion is elastically deformed in the radial direction to disengage from the engaging groove portion and the knob body is pulled out from the tip end portion of the shaft member, the attachment and detachment can be performed.

Further, according to the present invention, by forming the engaging claw portion in the slit formed in the cylindrical portion for the shaft hole portion in the inner central portion of the knob body, the radial direction can be improved. The elastic deformation of the shaft becomes easy, and it is possible to reliably prevent the shaft member from coming off due to the engagement with the engagement groove after the press-fitting of the shaft member.
Desorption is also easy.

Further, according to the present invention, the tip of the shaft member is forcibly press-fitted from the inside into the shaft hole formed through the central portion of the knob body to prevent rotation by serration coupling and the like. A locking claw or the like formed in advance on the outer end of the hole is used to prevent the shaft from coming off, and by closing the outer end of the shaft hole that has penetrated with the fitting of the lid member, the operation knob can be attached. Desorption can be performed by performing the reverse operation.

[0016]

1 to 4 show an embodiment of an operating knob mounting structure according to the present invention. In these drawings, an outline of a vehicle seat 1 suitable for applying the present invention is shown.
A brief description will be given with reference to FIG.

That is, the seat 1 is provided with a seat cushion 2 and a seat back 3 provided upright on the rear end side of the seat cushion 2.
A headrest 4 is provided at the upper end of the seatback 3. The seat back 3 is provided with a reclining mechanism (not shown) that supports the seat cushion 2 so that the tilt of the seat back 3 can be adjusted, and an operation knob 6 of the reclining mechanism is provided at the tip of the operation shaft 7 protruding to the side of the seat 1. Has been.

Further, in the seat cushion 2 of the seat 1, although not shown, the seat cushion 2
A so-called walk-in mechanism that moves the seat back and forth and a vertical motion at the same time, and a cy support mechanism that supports the thigh of the seated person by the seat surface of the seat cushion 2 are also provided. It is provided at the outer ends of the operation shafts 8a and 9a.

Here, in the above-described embodiment, the operation knobs 6, 8 and 9 are of the rotary dial type which can be manually rotated. The detailed configuration of the vehicle seat 1 as described above, the operation of each part, and the like are well known in the related art, and a specific illustration and description thereof will be omitted.

According to the present invention, in the above-described vehicle seat 1 and the like, for example, the operation knob 6 for the reclining mechanism is attached and fixed to the operation shaft 7 by the following configuration. However, it goes without saying that it can be applied to other operation knobs 8, 9 and the like.

That is, the operating knob mounting structure according to the present invention is attached to the outer end of the operating shaft 7 which is a shaft member extending outward from the seat body (seat cushion 2) and is manually rotated from the outside. As is apparent from FIGS. 1 to 3, in the operation knob 6 to be operated, a shaft hole portion 12 into which the tip portion 11 of the operation shaft 7 is press-fitted is formed in the inner center portion of the knob body 10 constituting the operation knob 6. In addition, an engaging groove portion 13 is formed in a portion of the operating shaft 7 which is press-fitted into the shaft hole portion 12 near the tip portion 11, and an engaging claw portion 14 which is engaged with the engaging groove portion 13 by elastic deformation. , 14 are integrally formed with a rib 15 formed inside the knob body 10.

Here, the tip portion 11 of the operating shaft 7 and the shaft hole portion 1
On the inner peripheral surface of 2, there is formed a serration portion that integrates both members in a rotation stop state by serration coupling. The engagement groove 13 on the operation shaft 7 side is formed as a small-diameter annular groove. Further, reference numeral 16 in the drawing denotes a boss type cylinder portion for forming the shaft hole portion 12 inside the knob body 10.

Reference numeral 17 in the drawing is a jig for elastically deforming the locking claw portion 14 in the radial direction via a rib 15 which also serves as a lever portion for elastic deformation, and 18 is a finger of an operator.

With such a structure, as is apparent from FIGS. 1 and 2, the tip portion 11 of the operating shaft 7 is press-fitted into the shaft hole portion 12 in the inner central portion of the knob body 10 of the operating knob 6. Then, the rotation is stopped by serration coupling or the like, and the locking claw portions 14, 14 elastically deformed in the radial direction by the operator's finger 18 or tool 17 at the time of this press-fitting are released and returned to the original state. The knob body 10 is prevented from coming off by engaging with the engaging groove portion 13 near the tip portion 11 of the knob 7, whereby the knob body 10 can be attached to the operating shaft 7 very easily.

On the contrary, as shown in FIG.
The engaging claw portions 14, 14 are elastically deformed in the radial direction by the operator's finger 18 or the like to disengage (unlock) the engaging groove portion 13, and the knob body 10 is axially moved from the distal end portion of the operating shaft 7. It can be easily attached and detached by taking it out at. In this case, due to the positional relationship between the seat 1 and the knob 6, etc., when the finger 18 does not enter, it is free to use the tool 17 for unlocking.

Here, in the operation knob mounting structure as described above, as shown in FIG. 5, the slit 2 is formed in the cylindrical portion 16 which forms the shaft hole portion 12 in the inner central portion of the knob body 10.
The legs 14a and 14a of the locking claws 14 and 14 which are engaged with the engaging groove 13 formed near the tip 11 of the operating shaft 7 are engaged with the slits 20 and 20. It may be configured to be formed in an enterable state.

With this structure, the locking claws 14, 14 are engaged with the slits 20, 20 formed in the cylindrical portion 16 for the shaft hole 12 in the inner center of the knob body 10. By forming by (3), elastic deformation in the radial direction is facilitated, and the operation shaft 7 can be securely prevented from coming off by engaging with the engaging groove portion 13 after being press-fitted, and can also be easily detached. In particular, when such a slit 20 is used, it is possible to increase the bending amount of the locking claw portion 14,
A reliable locked state can be obtained.

Therefore, in such a configuration, the operation knob 6
When assembling the knob main body 10 constituting the shaft end to the end portion of the operation shaft 7 which is the shaft member, the knob main body 10 can be attached to the operation shaft 7 without the need for conventional fastening parts such as screws and pins and latching parts. It is possible to obtain a mounting structure for the operation knob 6 which can be attached and detached extremely easily and surely and which does not affect the appearance.

Further, in the operation knob mounting structure according to the present invention, as shown in FIG. 6, the shaft hole portion into which the tip portion 11 of the operation shaft 7 is press-fitted into the inner central portion of the knob body 10 constituting the operation knob 6. 12 may be formed so as to penetrate therethrough, and the tip portion 11 of the operation shaft 7 may be press-fitted from the inside of the shaft hole portion 12, and the lid member 30 may be fitted and fixed to the outside of the shaft hole portion 12. Is. Here, locking claws 14, 14 are integrally formed at the inner end portion of the cylindrical portion 16 forming the shaft hole portion 12, and when the operation shaft 7 is press-fitted, it is forcibly pushed over this portion. I am trying.

In such a structure, the tip portion 11 of the operating shaft 7 is forcibly press-fitted from the inside into the shaft hole portion 12 formed through the central portion of the knob body 10 to prevent rotation by serration coupling or the like. The locking claws 14, 14 formed in advance on the inner end of the shaft hole 12 inside the knob 6 are used to prevent the shaft 12 from coming off, and the outer end of the shaft hole 12 that penetrates through is fixed by fitting the lid member 30. It is easy to understand that the operation knob 6 can be attached by closing it by closing it, and the operation knob 6 can be attached and detached by performing the opposite operation.

Needless to say, the present invention is not limited to the structure of the above-described embodiment, and the shape, structure, etc. of each part can be appropriately modified or changed. For example, in the above-described embodiment, the case where the present invention is applied to the operation knobs 6, 8, and 9 which are operation members such as a reclining device, a walk-in device, and a cysupport device in the vehicle seat 1 has been described.
It is needless to say that the present invention is not limited to this, and can be applied to an operation knob attachment structure attached to the outer end of the operation shaft member in various kinds of equipment and devices to exert the effect.

[0032]

As described above, according to the operation knob mounting structure according to the present invention, the operation which is attached to the outer end of the shaft member extending outward from the apparatus body and is manually rotated from the outside. A shaft hole portion into which the tip end portion of the shaft member is press-fitted is formed in the inner center portion of the knob body forming the knob, and an engagement groove portion is formed in a portion near the tip end portion of the shaft member press-fitted into the shaft hole portion. Since the locking claw portion that is formed and that is elastically deformed in the engagement groove portion is integrally formed inside the knob body, the knob that constitutes the operation knob is simple in structure. When assembling the main body to the end of the shaft member, it is extremely easy and reliable to attach and detach the knob main body to the shaft member without the need for conventional fasteners such as screws and pins and latching parts. It does not affect the appearance and appearance. It exhibits various excellent effects.

In particular, according to the present invention, in the operation knobs used in the vehicle seat, the effect can be exhibited by adopting the operation knob attachment which can be attached and detached very easily.

Further, according to the present invention, a slit is formed in the tubular portion forming the shaft hole portion in the central portion of the inside of the knob body, and the slit is engaged with the engaging groove portion formed near the tip end portion of the shaft member. Since the locking claw portion is formed so as to be engageable with this slit, there is an advantage that the locking claw portion is easily elastically deformed and can be easily attached and detached.

Further, according to the operation knob mounting structure of the present invention, the shaft hole portion into which the tip end portion of the shaft member is press-fitted is formed through the inner central portion of the knob body forming the operation knob. The tip portion of the shaft member is press-fitted from the inside of the shaft hole portion, and the lid member is fitted and fixed to the outside of the shaft hole portion.
There is an advantage that the knob body can be attached to and removed from the shaft member more easily.

[Brief description of drawings]

FIG. 1 is a schematic exploded perspective view for explaining a main part configuration showing an embodiment of an operation knob mounting structure according to the present invention.

FIG. 2 is a schematic cross-sectional view showing only a part of the assembled state of FIG.

3 is a schematic cross-sectional view of a main part configuration for explaining a state at the time of removal in the mounting structure of FIG.

FIG. 4 is a schematic perspective view illustrating a suitable vehicle seat to which the operation knob mounting structure according to the present invention is applied.

FIG. 5 is a schematic perspective view in which only a partial configuration is enlarged, showing another embodiment of the operation knob mounting structure according to the present invention.

FIG. 6 is an exploded side sectional view showing another embodiment of the operating knob mounting structure according to the present invention.

[Explanation of symbols]

 1 Vehicle Seat 6 Operation Knob 7 Operation Axis (Shaft Member) 8 Operation Knob 8a Operation Axis 9 Operation Knob 9a Operation Axis 10 Knob Main Body 11 Operation Axis Tip (with Serration) 12 Shaft Hole (with Serration) 13 Engagement Groove 14 Locking Claw 15 Rib 16 Tube 18 Finger 20 Slit 30 Lid Member

Claims (3)

[Claims] 1. An operating knob, which is attached to an outer end of a shaft member extending outward from a main body of the apparatus and is manually rotated from the outside, wherein: A shaft hole portion into which the tip end portion of the shaft member is press-fitted is formed, and an engagement groove portion is formed in a portion near the tip end portion of the shaft member press-fitted into the shaft hole portion, and the engagement groove portion is elastically deformed. An operating knob mounting structure, wherein a locking claw portion to be engaged with is integrally formed inside the knob body. 2. The operation knob mounting structure according to claim 1, wherein a slit is formed in a cylindrical portion forming an axial hole portion in an inner central portion of the knob body, and an engagement formed near a tip portion of the shaft member. The operation knob attachment structure, wherein the locking claw portion that is engaged with the groove portion is formed in a state that can be engaged with the slit. 3. An operating knob, which is attached to an outer end of a shaft member extending outward from the apparatus main body and is manually rotated from the outside, wherein: A shaft hole portion into which the tip end portion of the shaft member is press-fitted is formed to penetrate, and the tip end portion of the shaft member is press-fitted from the inside of this shaft hole portion, and a lid member is provided outside the shaft hole portion. An operation knob mounting structure, characterized in that it is configured to be fitted and fixed.