JPH0621669Y2 - Locking device - Google Patents

Description

[Detailed Description of the Invention] <Industrial field of application> The present invention relates to an improvement of a locking device that clamps and locks an object, or locks itself between objects.

<Prior Art> Conventionally, for example, as shown in FIG. 8 (A), as a locking tool for sandwiching and locking an object. This one is provided with two projecting pieces (b) (c) projecting in mutually opposing directions at positions separated from each other on the main body (a), and at the tips of these projecting pieces (b) (c), Forming a flat abutting surface (b1) (c1) that abuts the object (d), respectively, and one projecting piece (c)
Is attached to the sliding piece (e) slidably attached to the main body (a) by screwing. And this contact surface (b1) (c1)
The object (d) is placed between them, and the protruding piece (c) is screwed into the sliding piece (e).
By tightening the screw of, both contact surfaces of the protruding pieces (b) and (c)
It is designed to be sandwiched by (b1) (c1)).

However, this one has the contact surfaces (b1) (c) of the protruding pieces (b) (c).
Since (1)) is formed in a flat surface, if the screw on the protruding surface (b1) becomes loose due to, for example, vibration, and the force that clamps the target object (d) becomes weak, the target object (d) easily shifts. There is a thing.

When the object (d) to be sandwiched has a taper shape in which the thickness is not constant and gradually decreases, as shown in FIG. 7 (B), the contact surfaces of the protruding pieces (b) and (c) are It will be clamped only at the ends of (b1) (c1)). As a result, there is a problem in that the object (d) is disengaged from the locking tool only by a slight displacement in the thick direction side (F direction in the drawing).

In addition, JP-A-50-60899 and Japanese Utility Model Laid-Open No. 51-14.
In Japanese Patent Laid-Open No. 399 and Japanese Utility Model Laid-Open No. 56-137965, there is proposed a projecting piece in which a signal member is rotatably attached to the tip end portion.

In these devices, an engaging member having a flat contact surface is rotatably attached to the tip of the protruding piece, and a screw is engraved on the outer circumference of the shaft of the protruding piece to be screwed into the main body. It was. Then, by rotating the projecting piece along the screw, the projecting piece moves with respect to the main body, and even if the projecting piece is a tapered object, the contact surface of the engaging member can freely rotate along the surface of the object. It is designed to be able to come into contact while moving.

However, if the object moves even a little, for example, when the object is slightly held, or when the object being held is hit by another object, the contact surface becomes a flat surface. It is liable to slip between and, as a result, the object cannot be held. Further, at that time, since the projecting piece holding the object is locked by receiving the reaction force from the object in the screw-threaded portion with the main body, even if the object moves a little, As a result, the screw engagement with the main body becomes loose, and as a result, when a force is applied to the contact surface of the projecting piece, the projecting piece may escape in the direction opposite to the object. Therefore,
Even if the contact surface rotates with respect to the projecting piece due to the movement of the object, if the screwing is loosened and the projecting piece escapes in the direction opposite to the object, the contact surface will move with the rotation. The contact surface cannot project to the tip side, and the object comes off.

<Problems to be solved by the invention> The present invention has been proposed in view of the above-mentioned circumstances, and can be reliably performed even when the object is weakly held or when the held object is hit by another object. An object of the present invention is to provide a locking tool that can hold an object.

<Means for Solving the Problems> The present invention solves the above problems by providing a locking tool having the following features.

The locking device of the present invention comprises a main body (2) and two projecting pieces (10) (20) having a contact surface (12b, 22b) for contacting an object (6) at the tip.
Equipped with. These projecting pieces (10) and (20) are arranged at spaced positions of the main body (2) such that the contact surfaces (12b) and (22b) face each other or face the opposite direction. . or,
At least one of the protruding pieces (20) is slidably attached to the main body (2), and the other protruding piece (1
Position adjusting means for locking the main body (2) while adjusting the distance to the main body (2) and an engaging member (2
2) and are provided.

The position adjusting means has a connecting member (24) and an operating member (23) whose rear end is rotatably connected to the main body (2) by a shaft support (C).

The tip of the connecting member (24) is rotatably connected to the rear end of the protruding piece (20) by the shaft support (A), and the rear end of the connecting member (24) is an operating member.
By being pivotally connected to the tip end side of (23) by the pivotal support portion (B), the pivotal support portion of the connection member (24) and the operation member (23) ( B) is adapted to rotate around the peripheral portion of the shaft support (C) between the operating member (23) and the main body (2). And
The projection piece (20) moves forward and backward with respect to the other projection piece (10) by the rotation of the shaft support portion (B), and these three shaft support portions are also moved.
The toggle mechanism formed by (A), (B), and (C) can be engaged.

On the other hand, the engaging member (22) has a contact surface (22a) formed in an arc shape at the tip thereof. Further, the arc of the contact surface (22a) is located by arranging the center of curvature (O ₂ ) of the arc toward the rear side of the axis (O ₁ ) of rotation with the projecting piece (20). It has a radius of curvature (r ₂ ) larger than the turning radius (r ₁ ) of the surface (22a).

<Operation> In the present invention, the contact surface (22b) of the engaging member (22) has an arc shape when the object (6) is sandwiched as shown in FIG. The contact surface (22b) comes into contact with the object (6) at a point P ₁ arranged on the leftmost side in the drawing. When the object (6) moves from this state in the Z direction, the engaging member (22) rotates downward with O ₁ as the axis of rotation in accordance with this movement, and the contact point P ₁ moves to P ₁ ′. Is displaced to. At this time, since the arc of the contact surface (22b) of the engaging member (22) is formed to have a radius (r ₂ ) larger than the turning radius (r ₁ ) of the engaging member (22), With the rotation of the engaging member (22), the center O ₂ of the contact surface (22b) also moves a distance (S) to the left in the figure and is displaced to O ₂ ′.

As a result, the point P _2, which is the most leftmost position on the contact surface (22b) of the engaging member (22), comes into contact with the object (6), and this point P 2
₂ will be located at a position protruding leftward by a distance (S) compared to P ₁ .

Therefore, the distance between the contact surfaces of the two projecting pieces can be reduced, and the object can be pressed more strongly by that amount.

At that time, the engaging member (22) is a main body by a toggle mechanism.
Since it is locked to (2), it is possible to prevent the engagement member (22) from escaping when locked by screwing as in the past, and to maintain the engagement member (22) in the locked state securely. You can keep it.

<Embodiment> An embodiment of the present invention will be specifically described below.

FIG. 1 is a side view showing an embodiment of a locking device of the present invention.

The locking device (1) of the present invention comprises a main body (2) and two projecting pieces (1) which are locked to separate positions of the main body (2).
0) and the movable protruding piece (20). In this embodiment, the projecting pieces (10) and (20) are arranged such that the tips thereof face each other.

The main body (2) is composed of a long pillar (3) and a sliding member (4) that slides the pillar (3) along the longitudinal direction. Prop
One end side of (3) is bent at a substantially right angle, and the bent tip has a hole (31) so that the fixed protruding piece (10) can be attached.

Further, the scale (32) is engraved on the outer peripheral wall of the column (3), and six tops (3a) ... (3a) are arranged at equal intervals as shown in FIG. It is formed in the shape that it has.

On the other hand, the sliding member (4) has an insertion hole (41) at one end for inserting the support column (3) and a hole for attaching the movable protruding piece (20) at the other end.
(42) and. The insertion hole (41) is formed in a quadrangular prism shape as shown in FIG. 2 (A).

As shown in FIG. 3, the fixed protruding piece (10) is provided with holes (3
It is composed of a cylindrical shaft portion (11) passed through the inside of 1), and an engaging member (12) which engages with one end side of the shaft portion (11). The shaft part (11)
A male screw portion (11a) is provided on the left side of the figure, and a flange (11b) is provided on the right side via a step. And the holes in the columns (3)
After passing through the (31), the nut (5) is screwed into the male screw part (11a), and the nut (5) and the flange (11b) are clamped to fix both end surfaces of the column (3). It The method of fixing the shaft portion (11) and the support column (3) is not limited to this, and for example, a female screw is provided on the inner peripheral wall of the hole (31) of the support column (3) to attach the male part of the shaft section (11). It may be screwed with the screw portion (11a) and can be changed appropriately.

Further, at the right end of the shaft portion (11) in the drawing, a spherical protrusion (11c)
Is provided, and the engaging member (12) is rotatably attached thereto.

On the other hand, the engaging member (12) is provided with a spherical recess (12a) on the left end surface in the drawing and a contact surface on the right end surface in the drawing. This spherical recess (12a) is fitted to the spherical protrusion (11c) of the shaft (11), and the engaging member (12) is centered on the spherical core (O ₁ ) of the spherical protrusion (11c) in all directions. Rotate.

In this embodiment, the shaft portion (11) is provided with a spherical protrusion (11c), and the engaging member (12) is provided with a spherical recess (12a).
(12) can be rotated with respect to the shaft (11),
Not limited to this, for example, a spherical protrusion is provided on the engaging member (12),
The shaft portion (11) can be appropriately modified, for example, by providing a spherical recess.

Further, the contact surface (12b) of the engaging member (12) is a portion to be contacted with the object (6) sandwiched by the locking tool (1), and its shape is an arc shape. . Further, the center (O ₂ ) of this circular arc is arranged at a position on the left side in the figure with respect to the spherical core (O ₁ ) of the spherical protrusion (11c) of the shaft portion (11). That is, the engaging member (12) is the shaft portion (11)
From the turning radius (r ₁ ) that turns with respect to this contact surface (22b)
The radius of the circular arc (r ₂ ) is larger than that of the circular arc.

Next, the movable protruding piece (20) will be described.

The movable projecting piece (20) includes a round bar-shaped shaft portion (21) and an engaging member (22) that engages with the shaft portion (21). The right side of the shaft part (21) shown in FIG. 1 is inserted into the cylindrical stationary part phase (25) fixed to the hole (42) of the sliding member (4) of the main body (2), and the left side To the engaging member (2
2) is engaged. The engaging member (22) has the same shape and size as the engaging member (12) of the fixed protruding piece (10) described above, and is similarly engaged with the tip of the shaft portion (21).

On the other hand, the right end portion of the fixing member (25) is connected to the connecting member (2
Via (4), it is connected to a handle (23) which is fixed to the fixing member (25) by an axis (shown in C). Specifically, the right end of the shaft (21) is
A shaft stopper (A in the figure) is attached to one end of the connecting member (24) to
The other end of 4) is axially fixed to the handle (23) (shown in B). As for the positional relationship in which the above-mentioned three positions are axially stopped, the axial stop position (A) between the shaft portion (21) and the connecting member (24) is arranged on the left side, and the fixing member (25) and the handle ( The shaft stop position (C) with 23) is located on the right side. Then, these are arranged in a position on the movable line of the shaft portion (21), that is, substantially parallel to the column (3) of the main body (2) in FIG. Moreover, these positions (A) and (C) are constant without displacement.

On the other hand, the connecting member (24) and the shaft stop position (B) of the handle (23) are arranged between the two shaft stop positions (A) and (C).
Further, the handle (23) is moved and displaced as the handle (23) is moved. Then, when the handle (23) is rotated in the X direction in the figure, it is displaced to a position slightly below the line connecting the two shaft stop positions (A) and (C).

A method of using the locking tool (1) configured as above and its operation will be described.

First, turn the handle (23) in the Y direction shown in the figure to correspond to the thickness (approximate visual thickness) of the object (6) to be sandwiched with the two engaging members (12) and (22) widened. Then, the sliding member (4) of the main body (2) is aligned with the scale (32) of the column (3) and set.

Then, turn the handle (23) in the X direction shown in FIG.
The stopper pin (23a) attached to (23) is connected to the connecting member (24).
Turn until you hit. This allows the two engaging members (1
2) The object (6) can be held by (22).

At this time, the shaft stop position (B) of the handle (23) and the connecting member (24)
Is positioned slightly below the line connecting the other two shaft stop positions (A) and (C), so that the handle (23) is maintained in this state without returning in the Y direction.

Next, the movement of the engaging members (12) and (22) when the object (6) sandwiched from this state moves will be described with reference to FIG.

In FIG. 4, first, the contact surface (22b) of the engaging member (22)
However, if the object (6) is in contact with the object (6) at the leftmost point P ₁ , the object (6) moves from this state in the Z direction in the figure, and P ₁ moves to the shaft part (21). The spherical core of the spherical protrusion (21c) of
It rotates about (O ₁ ) and is displaced to the position of P ₁ ′. At this time, the arc of the contact surface (22b) of the engaging member (22) is
Since it is formed in an arc having a radius (r ₂ ) larger than the turning radius (r ₁ ) of ₂ ), the contact surface (22b) is rotated along with the rotation of the engaging member (22).
The center O _{2 of} O ₂ ′ is also moved by a distance (S) to the left in the figure.
Is displaced to.

As a result, the point P _2, which is the most leftmost position on the contact surface (22b) of the engaging member (22), comes into contact with the object (6), and this point P 2
₂ is arranged at a position protruding leftward by a distance (s) compared to P ₁ .

Therefore, the distance between the two contact surfaces (12b) and (22b) is narrowed by the distance (S), and the contact surface (22b) pushes the object (6) to the left by the distance (S).

The above also occurs in the other engaging member (12), and the distance between the contact surfaces (12b) and (22b) of the two engaging members (12) and (22) is the distance (S).
The object (6) is clamped more strongly by that amount. As a result, the movement of the object (6) is stopped, and the object (6) can be reliably held.

Further, the above is because the contact surface (22b) protrudes as much as the object (6) has a tapered shape in which the thickness of the object (6) is gradually thin, and therefore the object (6) does not easily come off, It can be sandwiched.

On the other hand, as described above, the object between the engaging members (12) and (22)
When (6) is pressed and pinched, the sliding member (4) of the main body (2)
Receives the reaction force of the engaging member (22) on the hole (42) side. Therefore, the sliding member (4) is twisted between the insertion hole (41) and the column (3) of the main body (2) and is locked to the column (3).
At this time, as shown in FIG. 2 (A), the cross-sectional shape of the support column (3) is made different, increasing the moment of inertia of area,
Since its bending strength is increased, it becomes difficult to bend. In addition, when twisting occurs between the insertion hole (41) of the sliding member (4) and the support column (3), the abutting portions of these have different shapes from each other. ) Only the top part.

As a result, the entire load can be applied only to the upper portion and the lower top portion (3a) of the column (3) shown in FIG. 2 (A), and slippage can be prevented.

The cross-sectional shape of the column (3) is 6 as shown in Fig. 2 (A).
Not only the one having three tops (3a), for example, the bending strength is increased even if it is formed into a shape having four tops (3a) and used.
It will be practical.

Further, the fitting state of the support column (3) and the insertion hole (41) of the sliding member (4) is not limited to the state shown in FIG. 2 (A), but may be, for example, FIG. 2 (B). It is also possible to fit them in the state as shown in FIG. 3, which can increase the strength of the support column (3) against twisting. The above is a description of how to use the locking tool (1) and its operation.

Next, another embodiment will be described with reference to FIG.

FIG. 5 shows an embodiment of a clamper used at a construction site or the like. At the one end of the substantially U-shaped main body (50), first
Movable protrusion (20) connected to the handle (23) described in the figure
And an engaging member (22) is provided. In this embodiment, the other end side of the main body (2) is not provided with an engaging member, and is integrally projected with the main body (2) so that the contact surface (12b) is a flat protruding piece ( 10) is assumed to have been formed.

FIG. 6 relates to still another embodiment, in which the locking tool (1) itself is locked between the objects and the chain or the like is hung on the locking tool (1). It shows things.

A fixed protruding piece (10) is provided at one end of the substantially U-shaped main body (2), and a movable protruding piece (20) is provided at the other end. Then, the engaging members (12) and (22) provided at the respective tip portions are attached so as to be in mutually opposite directions, and the hanging member (8) is attached to the substantially central portion. Further, in the embodiment, the fixed protruding piece (10) is attached by the two nuts (5) and (9).

In addition, in the embodiment described above, the movable projection piece (20) is all provided with the handle (23) so that the object (6) can be easily locked, but not limited to this, for example, As in the prior art, the shaft portion (21) of the movable projecting piece (20) may be provided with a male screw portion, and the main body (2) may be provided with a male screw portion for locking. May be provided only on the fixed protruding piece (10), and can be appropriately changed.

Further, in the embodiment, the contact surfaces (12b) (22b) of the engaging members (12) (22) are
Although the shape of b) is formed in an arc centering on O ₂ , it is not limited to this, and for example, as shown in FIG. 7, it is formed in an arc having two centers of O ₃ and O ₄ , etc. It can be changed as appropriate.

Further, the shape of this arc is the contact surface (22
b) The entire surface is not limited to an arc having a radius larger than the turning radius (r ₁ ) of the engaging member (22), and for example, the contact surface (22b)
Only the center part (the part that contacts the object around P _{1 in the} figure) is an arc centered on O ₂ , and the other parts are formed to be the same as the radius r ₁ or an arc with a smaller radius, etc. It can be changed as appropriate.

<Effects of the Invention> As described in the above embodiments, in the locking device of the present invention, when the sandwiched object moves, the engaging member rotates, and at the same time, a part of the abutment surface protrudes to bring the two abutments into contact. The space between the faces can be reduced.

Moreover, at that time, since the engaging member is locked to the main body by the toggle mechanism, it is possible to prevent the engaging member from escaping when it is locked by screwing as in the past, and to keep the engaging member in the locked state. You can keep it.

Therefore, it is possible to hold the object more strongly and prevent it from shifting. In addition, even if it is a tapered object,
Since the contact surface projects by an amount corresponding to the reduced thickness, it is possible to prevent the contact surface from being easily displaced.

As described above, the present invention can provide a locking tool that can reliably hold an object even when the object is held by a weak force or when the held object is hit by another object.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a locking device of the present invention, FIG. 2 (A) is an explanatory view showing a fitted state of a sliding member and a support, and FIG. 2 (B) is FIG. 3 is an explanatory view showing another fitting state, FIG. 3 is a sectional view showing an essential part of a fixed projecting piece, FIG. 4 is an explanatory view showing a state in which an engaging member is rotated, and FIG. 5 is another embodiment. 6 is a side view showing still another embodiment, and FIG. 7 is an explanatory view showing another embodiment of the contact surface of the engaging member.
FIG. 8 (A) is a side view showing a conventional example, and FIG. 8 (B) is a plan view showing a conventional example. (1) …… Locking tool, (2) …… Main body, (3) …… Post, (4) …… Sliding member, (10) …… Fixed protruding piece, (20) …… Movable protruding piece, (1
2) (22) ... engaging member, (12b) (22b) ... abutting surface.

Claims (1)

[Scope of utility model registration request] 1. A main body (2) and a contact surface (1) for contacting an object (6).
2b) (22b) with two protruding pieces (10) (20) at the tip,
These projecting pieces (10) and (20) are arranged at spaced apart positions of the main body (2) so that the contact surfaces (12b) and (22b) face each other or in the opposite direction. , At least one protruding piece (20) is slidably attached to the main body (2), and the other protruding piece (1
Position adjusting means for locking the main body (2) while adjusting the distance to the main body (2) and an engaging member (2
2), the position adjusting means has a connecting member (24) and an operating member (23) rotatably connected to the main body (2) at the rear end by a shaft support (C), The tip of the connecting member (24) is rotatably connected to the rear end of the protruding piece (20) by the shaft support (A), and the rear end of the connecting member (24) is an operating member.
By being pivotally connected to the tip end side of (23) by the pivotal support portion (B), the pivotal support portion of the connection member (24) and the operation member (23) ( B) is adapted to rotate around the peripheral portion of the shaft support (C) between the operation member (23) and the main body (2).
By the rotation of (B), the projecting piece (20) advances and retreats with respect to the other projecting piece (10), and can be locked by the toggle mechanism formed by these three shaft support parts (A) (B) (C). On the other hand, at the tip of the engaging member (22), there is a contact surface (22a) formed in an arc shape, and the arc of this contact surface (22a) is the arc. By arranging the center of curvature (O ₂ ) of the contact surface (22) to the rear side of the axis (O ₁ ) of rotation with the protruding piece (20),
A locking tool having a radius of curvature (r ₂ ) larger than (r ₁ ).