JPH029388Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a rotation restraint device for a shaft or the like.

Prior Art The present applicant has already proposed an invention for a "rotation restraint device for shafts, etc." in Utility Application No. 57-145691 (see Utility Model Application No. 59-53430). It mainly concerns the improvement of the idea.

That is, in the above-mentioned invention proposed earlier, in various types of equipment, the shaft is rotatably supported with respect to the equipment frame, and this shaft is normally restrained in a non-rotatable manner with respect to the equipment frame. When necessary, release this constraint and allow the axis to rotate, and once it has made the desired angle of rotation,
It is often required to be non-rotatably restrained in this rotational position, or, conversely, to place a shaft fixedly and to rotatably support a lever or the like on this shaft, and to rotate this lever. The lever is always restrained with respect to the axis, but when necessary, it is often required to release this restraint, turn the required angle, and then restrain the lever again in this turning position. In view of this, in order to meet such demands, a rotation restraint device such as a shaft having a special configuration has already been proposed.

However, as a result of actual use, it was discovered that there were several points that could be improved, such as the fact that it was somewhat inconvenient to operate, the overall outline was large and heavy, and the assembly was somewhat complicated.

Problems to be Solved by the Invention Therefore, the present invention mainly focuses on a rotational restraint device such as an improved shaft that is easy to operate, which can solve the above-mentioned problems in the previously proposed device. Its purpose is to obtain.

Means for Solving the Problems In order to achieve this objective, the present invention connects a pair of substantially rectangular plate members arranged parallel to each other with a slight interval and their peripheries. The housing has a hollow housing consisting of side walls, and one side wall of the housing is extended together with an adjacent plate member, and the surface opposite to the extension of the side wall is open as an opening. A handle lever in the form of a bent lever having two arm members is disposed inside the handle portion and the housing adjacent thereto, and the bent portion thereof is disposed inside the handle portion and the housing adjacent thereto. The handle lever is rotatably mounted around a pivot fixed to both plate members of the housing, and one arm member inside the housing touches the side wall of the housing by the action of a spring member disposed between the handle lever and the housing. The adjacent arm member is adapted to protrude from the opening in the handle portion, and one plate member of the housing includes a side wall that vertically bisects the side wall forming the base of the handle portion. a tube member having a centerline perpendicular to the vertical centerline of the housing, the tube member having its outer end portion fixed to the stationary part and its inner end portion being fixed to the stationary part; extends close to the other plate member of the housing, and the end of the shaft that loosely passes through this tube member and is to be restrained from rotation is fixed to approximately the center of the other plate member, and the tube member The gear is secured at its center inside the housing, and the housing further includes a pair of substantially parallel to the vertical center line and symmetrically opposed to the gear. A linear operating lever is arranged, and each operating lever is rotatably attached to a pivot fixed to opposing plate members of the housing at approximately the center in the length direction, and a portion facing the gear of each operating lever is provided. are formed with arc-shaped tooth members to engage with the teeth thereof, and each end near the side wall adjacent to the handle portion of these operating levers is linked to one arm member of the handle lever, respectively. The other end of the operating lever is characterized by a restraining device such as a shaft connected to each other by a spring member.

Embodiments Hereinafter, the present invention will be explained based on FIGS. 1, 2, 3, and 4 of the accompanying drawings showing embodiments thereof.

First, FIG. 1 shows a longitudinal cross-sectional view of one embodiment of the present invention, and as shown in the figure, this embodiment consists of a pair of plate members each having a substantially rectangular planar shape. It consists of a flat hollow box-shaped housing 1 in which 1 ₁ and 1 ₂ are arranged parallel to each other at a small interval and surrounded by side walls 2 ₁ to _{2 4} . 1 opposite 1
From the pair of plate members 1 ₁ , 1 ₂ , a substantially elongated hollow box-shaped handle portion 3 including one side wall 2 ₁ of the pair of plate members 1 1 , 1 2 is attached to the pair of opposing side walls 2 ₁ , 1 of the housing 1 .
The handle portion ₃ is formed to extend in a direction perpendicular to the vertical center line
₁ and the end thereof remote from the vertical centerline X-X of the housing 1 is a cap 3 ₂
It is blocked by. Also, this housing 1
Inside, there is a plate-shaped handle lever 4 having a bent shape, with its bent portion located near the connecting portion between the main body portion of the housing 1 and the base of the handle portion 3. It is rotatably mounted by pivots 5 fixed at right angles to plate members 1 ₁ and 1 ₂ of the housing 1 . In this case, one arm member 4 ₁ in the inner part of the handle part 3 of the housing 1 of the handle lever 4 is made to protrude from the lower opening 3 ₁ of the handle part 3 to the outside of the handle part 3 and its end There is a grip knob 6 on the part.
However, the knob 6 has a cross-sectional shape such that it can freely move in and out of the interior space of the handle portion 3 (see FIG. 4).
Furthermore, the other arm member 4 ₂ of this handle lever 4 is
The arm member 4 ₁ to which the grip knob 6 is fixed is
When projecting outwardly from the handle portion 3, the pivot is such that one side thereof contacts the inner surface of the side wall ₂₁ of the housing 1, which is flush with the side wall of the handle portion 3. One end of the torsion spring 7 wound around the handle lever 4 is engaged with the arm member 4 1 on the side of the grip knob 6 of the handle lever ₄ , and the other end is attached to the inner surface of the side wall 2 ₁ of the housing 1. Leave it engaged.

Note that the end of the arm member 4 ₂ inside the housing 1 of the handle lever 4 is long enough to reach approximately the center of the inner surface of the side wall 2 ₁ of the housing 1 with which one side comes into contact. An elliptical hole 8 is provided near the end of the housing 1 in parallel with the side wall 2 ₁ of the housing 1 .

On the other hand, a short bushing 9 is fixed to approximately the center of one plate member ₁₂ of the housing 1 at one end thereof so as to protrude from the plate member ₁₂ into the housing. A serration ₉₁ is formed on the inner surface of this bushing 9, and the shaft 10 whose rotation is to be restrained is fixed via the serration ₉₁ via a corresponding serration formed at the end thereof. It's summery. Further, at the other end of the bushing 9, a tube member having a certain length is rotatably fitted onto the shaft 10 and is adapted to loosely pass through one plate member ₁₁ of the housing 1. 11 is arranged so as to be in contact at its ends, and on top of this tubular member 11 near the end facing the bushing 9, a gear wheel 12 is disposed within the housing 1, approximately in its center. It is fixed in parallel with the plate members 1 ₁ and 1 ₂ . It should be noted that the vicinity of the other end of this pipe member 11 shall be properly fixed to a stationary part such as an equipment frame that rotatably supports the shaft 10 via a flange 11 ₁ fixed to it. .

Moreover, inside the housing 1, this gear 12
, with respect to the vertical center line XX of the housing 1,
On its diameter at a nearly right angle, its teeth 12 ₁
A pair of operation levers 13 each having an arcuate toothed portion 13 ₁ that interlocks with the handle portion 1 are perpendicular to the side wall 2 1 of the housing 1 that is flush with the side wall of the handle portion ₃ of the housing 1 . side walls 2 ₂ , 2 ₄
These operating levers 13 are arranged approximately parallel to the handle lever 4 with respect to the center of the bushing 9, and these operating levers 13 are connected to a pair of pivots 14 fixed to the plate members 1 ₁ and 1 ₂ of the housing 1 at a portion close to the handle lever 4 with respect to the center of the bushing 9. Each is rotatably attached via the
Further, the ends of the operating levers 13, which are rotatably attached to the housings 1 via pivots 14 and away from the handle lever 4, are interconnected by coil springs 15, and are always
The toothed portions 13 ₁ of these operating levers 13 are arranged to mesh with the teeth 12 ₁ of the gear 12 .

Furthermore, the housing 1 of these operating levers 13
At the end near the side wall 2 ₁ there is in each case one link 16 with a pivot 17 at one end thereof.
A circular hole 18 is bored near the other end.
Through this circular hole 18, these links 16
are pivotably attached to each other via a pivot 19 passed through a circular hole 8 drilled in one arm member ₄₂ of the handle lever 4.
In this case, both links 16 are arranged on opposite sides to each operating lever 13 (see FIG. 3). Also,
Each end of a pivot 19 that pivotally connects the circular hole 8 formed in the arm member ₄₂ of the handle lever 4 and the circular hole 18 formed in one end of each link 16 is , attached to the housing 1 so as to be able to slide freely in elongated slots 20 bored in the plate members 1 ₁ , 1 ₂ of the housing 1 along the vertical center line XX thereof; do.

Although the present invention has the above configuration,
Its operation is as follows.

In the state shown by the solid line in the left half from the vertical center line XX of the housing 1 in FIG. and at the other end, there is a pivot 1 on it.
A circular hole 18 drilled in the other end of the link 16 which is pivotally connected via a pivot 19
to one arm member 4 ₂ of the handle lever 4 through the
Since it is engaged by the elliptical hole 8,
When the grip knob 6 of the handle lever 4 is in the state shown in FIG. 1, the teeth 12 ₁ of the gear 12 and the tooth portion 13 ₁ of the operating lever 13 are firmly engaged. In this way, the shaft 10, which is fixed via the serrations 91 to the bushing ₉ fixed to one plate member 12 of the housing ₁ , is connected to the equipment via the pipe member 11 to which the gear 12 is fixed. It is locked to a stationary part such as a frame, and its rotation is restricted.

On the other hand, in this state, when the handle portion 3 is grasped together with the grip knob 6, the handle lever 4, which has one arm member ₄₁ fixed to the grip knob 6, will move vertically to the housing 1 as shown in FIG. center line
- As shown by the two-dot chain line in the right half of (This state is represented by the dashed double-dotted line in the left half of the vertical center line X-X of the housing in the same figure.) At this time, the handle lever 4 a circular hole 18 drilled in the other arm member 4 ₂ near one end thereof, through a circular hole 8 drilled near its end and a pivot 19 passed therethrough;
The link 16 is pivotally connected to the plate member 1 ₁ of the housing 1 at each end of the pivot 19 .
Gear 12 along slot 20 drilled in 1 ₂
As the lever rotates toward the center of the lever, it moves in that direction accordingly, so one end of the operating lever 13 is pivotally connected to the other end of the link 16 via a pivot 17. Due to the fact that the plate members 1 ₁ , 1 ₂ of the housing 1 are pivoted about the pivot 14 fixed to them against the force of the coil spring 15 interconnecting their other ends. Become. Therefore, the meshing between the teeth 12 ₁ of the gear 12 and the tooth portion 13 ₁ of the operating lever 13 is released. Therefore, the rotating shaft 10 fixed to the bushing 9 of the housing 1
When the handle portion 3 is gripped and rotated together with the knob 6 in a desired direction, the rotating shaft 10 is rotated to the tube member 11.
You can now turn it in the desired direction. After turning the desired angle in this way, when the grip knob 6 is released from the handle part 3,
Under the action of the torsion spring 7, the handle lever 4 pivots _{counterclockwise} , as seen in FIG. The operating levers 13, which are rotatably connected, are operated by the force of the coil spring 15 that interconnects their other ends.
The toothed portions 13 ₁ formed thereon engage again with the teeth 12 ₁ of the gearwheel 12 and prevent the pivoting of the housing 1 and thus of the rotating shaft 10, restraining the rotating shaft 10 in this pivoted position. .

Although the present invention has been described above as a device that restricts the rotation of the rotating shaft 10, the present invention can also be modified by slightly deforming the structure.
On the contrary, it is obvious that it can be similarly utilized to restrict the rotation of the housing 1 about the rotating shaft 10.

Effects of the invention Since the present invention has the above-mentioned configuration and operation, it is an improvement over the previously proposed device, is easy and convenient to operate, and has a simple structure as well. This provides an excellent effect in that it is possible to provide a rotational restraint device for a shaft or the like, which has a relatively small overall outline.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention;
Fig. 2 is a sectional view taken along the - line, Fig. 3 is a sectional view taken along the - line of Fig. 1, and Fig. 4 is a sectional view taken along the - line.
FIG. 2 is a longitudinal sectional view taken along the line - in FIG. 1; 1... Housing, 1 ₁ , 1 ₂ ... Plate member, 2 ₁
~2 ₄ ... Side wall, 3... Handle part, 4... Handle lever, 6... Grip knob, 7... Torsion spring, 8... Elliptical hole, 9... Bush, 10...
...Shaft, 11...Pipe member, 13...Operation lever, 1
6...link, 18...circular hole, 19...pivot, 20...slot.

Claims (1)

[Claims for Utility Model Registration] 1. A pair of substantially rectangular plate members 1 ₁ , 1 ₂ arranged parallel to each other with a slight interval,
The housing ₁ has a hollow housing 1 consisting of side walls 2 ₁ to _{2 4} connecting its periphery _. An elongated hollow handle portion 3 whose surface facing the extension of the side wall ₂₁ is open as an opening ₃₁ .
A bent lever-shaped handle lever 4 having two arm members 4 ₁ and 4 ₂ is disposed inside the handle portion 3 and the housing 1 adjacent thereto, and a bent portion thereof is disposed. The handle lever 4 is rotatably mounted around a pivot 5 fixed to both plate members 1 ₁ and 1 ₂ of the housing 1, and the handle lever 4 is rotated inside the housing 1 by the action of a spring member 7 disposed between it and the housing 1. One arm member 4 ₂ in the housing 1 is adjacent to the side wall 2 ₁ of the housing 1 and the other arm member 4 ₁ is adapted to project from the opening 3 ₁ in the handle portion 3; The plate member 1 ₁ has a tube member 11 having a center line perpendicular to the vertical center line XX of the housing 1 that vertically bisects the side wall 2 ₁ forming the base of the handle portion 3. The tube member 11 is arranged so as to pass through the housing 1 loosely, and the outer end portion of the tube member 11 is fixed to a stationary part, and the inner end portion thereof is extended close to the other plate member 1 ₂ of the housing 1 . The end of the shaft 10, which loosely passes through the tube member 11 and is to be restrained from rotation, is fixed to approximately the center of the other plate member ₁₂ , and
A gear 12 is fixed in the center of the housing 1 on the tube member 11, and a gear 12 is fixed in the interior of the housing 1 substantially parallel to and symmetrically with respect to the vertical center line XX. A pair of substantially straight operating levers 13 are arranged so as to face each operating lever 12 .
is rotatably attached to a pivot 14 fixed to the opposing plate members 1 ₁ and 1 ₂ of the housing 1 at a substantially central portion in the length direction, and at a portion of each operating lever 13 facing the gear 12, An arc-shaped tooth member 13 ₁ is formed so as to mesh with the tooth 12 ₁ , and these operating levers 13
Each end near the side wall 2 ₁ adjacent to the handle portion 3 of the handle lever 4 is rotatably attached to one arm member 4 ₂ of the handle lever 4 via a link 16 . A rotation restraint device such as a shaft whose ends are interconnected by a spring member 15. 2 An elliptical hole 8 is formed in the end of the handle lever 4 near the arm member 4 ₂ of the link 16 for connecting one arm member 4 ₂ of the handle lever 4 and the end of the operating lever 13. A circular hole 8 and a lever 1 are drilled in this arm member ₄₂ .
Each end of the pivot 19 passed through a hole 18 drilled in this end of the housing 1 is inserted into a slot 20 drilled in each plate member 1 ₁ , 1 ₂ of the housing 1 along its vertical centerline X-X. A rotational restraint device for a shaft or the like according to claim 1, which is mounted in a shaft so as to be freely movable inside the utility model. 3. The spring member 7 disposed between the handle lever 4 and the housing 1 is a torsion spring wound around the pivot 5 that pivotally attaches the handle lever 4 to the housing 1. A rotation restraint device such as a shaft according to scope 1 or 2. 4 Utility model registration claims 1, 2, or 4, in which a grip knob 6 that can be loosely inserted into the hollow part of the handle part 3 is fixed to the end of the arm member 4 ₁ on the side of the handle part 3 of the handle lever 4. A rotation restraint device such as the shaft described in item 3. 5 The end of the shaft 10 is fixed to one plate member ₁₂ of the housing 1, near the center thereof, to a bushing 9 fixed to the inside of the housing 1 via a serration ₉₁ formed inside the bushing 9. Scope of claims for utility model registration
A rotational restraint device such as a shaft according to any one of item 4.