JP4335983B2 - Tube clip - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tube clip (tube clamp), and more particularly to a tube clip that is attached to a tube through which a fluid such as a chemical solution flows to temporarily block the flow of the fluid flowing in the tube. is there.
[0002]
[Prior art]
Conventionally, a wide variety of tube clips have already been used as a tube clip for temporarily preventing fluid such as medical chemicals from flowing in the tube.
[0003]
Among these types of tube clips, one of the structurally simple ones made of synthetic resin is a pair of clip arms that can be bent via a loop-shaped curved portion. Pressing ridges are extended from the curved part to the tip part in the mutually facing parts, and the tube placed in a state crossing the pressing ridges is clamped between both pressing ridges. In order to support the state, there are some which are provided with engaging portions made of engaging claws which can be engaged with each other at the ends of both clip arms.
[0004]
In addition, with such a tube clip, when pressing the tube between both presser ridges, both presser ridges are designed to prevent misalignment in the tube transverse direction. There is a configuration in which the tube contact surface of the ridge is set to be wider than the tube contact surface of the other presser ridge. (See Japanese Utility Model Publication No. 5-3823)
[0005]
[Problems to be solved by the invention]
By the way, the conventional tube clip as described above is placed away from the tube in an appropriate place when it is not used, and it is used by the user by taking it to the tube when used. In such a use that repeatedly repeats the clamping and releasing, there is a problem that the handling becomes complicated.
[0006]
Therefore, the problem of the present invention is that the tube is detachably attached to the tube at an arbitrary position, and the tube can be pinched and released in a one-touch manner only by a pinch operation with a fingertip, which makes its use convenient. The object is to provide a tube clip.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 of the present invention is characterized in that the receiving plate and the pressing plate are integrally formed through the curved portion, the support plate is erected on the receiving plate, A tube clamping means for clamping the tube is provided at a portion where the pressing plates are opposed to each other, and the pressing plate is detachably supported with respect to the support plate. According to a second aspect of the present invention, the support plate and the bending portion are each provided with a tube through hole into which the tube is loosely inserted. The support plate and the bending portion are provided between the support plate and the bending portion. The tube clamping means may be provided in a portion facing the tube.
[0008]
Here, the tube is inserted into the tube passage hole of the support plate and the tube passage hole of the bending portion in a state where the end portion of the push plate is separated above the support plate and the push plate is in the open position. In this state, the tube becomes almost straight, and the tube is released from the clamping means so that the fluid flows in the tube.
[0009]
When blocking the fluid flow in the tube, press the end of the push plate in the closing direction to lock the push plate to the support plate, and the tube is pinched by the tube pinching means to prevent fluid flow. Is done.
[0010]
Therefore, according to the clip of the present invention, the tube is used while being attached to the tube, and the tube clamping pressure by the tube clamping means is performed between the tube passage hole of the support plate and the tube passage hole of the bending portion. Therefore, the fluid flow can be reliably prevented without causing the positional displacement of the pinching portion. In addition, the tube clamping operation and the opening operation can be easily performed with a single touch, making the use convenient.
[0011]
Further, the clip of the present invention is formed integrally with a rigid material such as a rigid resin material as in the invention of claim 3, and a thin portion is provided in the curved portion across the tube passage hole of the curved portion, It is preferable that the thin portion is provided with a habit of spreading the push plate in the opening direction.
[0012]
With this configuration, when the retaining relationship of the pressing plate with respect to the support plate is released to release the pinching pressure of the tube, the restoring elasticity of the tube and the pressing plate applied to the thin portion of the curved portion of the clip The opening direction spreadability acts synergistically, and the push plate is instantaneously opened to the open position without resistance, and the flow of fluid is resumed in the tube.
[0013]
In addition, since the clip of the present invention is used in a state of being attached to the tube, the tube through hole and the bending portion of the support plate can be used with the push plate in the open position as in the invention of claim 4. It is preferable that the tube is loosely inserted into the tube through hole, and the tube is elastically brought into contact with both the through hole and the projection tip on the receiving plate side so as to be frictionally movable on the tube surface.
[0014]
If comprised in this way, since the attachment position with respect to a tube, ie, the pinching position of a tube, can be preset, the effect of the invention which concerns on Claim 1 from the handling surface is made more effective.
[0015]
The tube is clamped by the clip of the present invention between the tube through-hole of the support plate and the tube through-hole of the curved portion and is not inserted between the two through-holes. As the pressure means, it is possible to apply a pressing projection form similar to a clip having a well-known structure that clamps one place from above and below. However, as in the invention according to claim 5, the tube pressure means is received. It is preferable to form two protrusions provided close to the plate in a direction crossing the tube and a protrusion provided on the pressing plate corresponding to the two protrusions with the tip between the two protrusions.
[0016]
With this configuration, the tube is clamped in such a manner that one projection is pushed in between the two front and rear projections from the opposite side, and the tube is bent in a square shape in a side view and sandwiched in a flat shape. Pressure is applied to the upper and lower inner surfaces of the tube in an airtight manner.
[0017]
Therefore, as compared with the conventional presser projection type in which the clamping pressure acts intensively at one location from above and below, the clamping pressure is dispersed in the tube longitudinal direction, and the tube inner surface of the clamping portion is joined by bending. Since the area is expanded, the pressure load on the tube itself can be reduced. In addition, because the tube-shaped bending of the tube due to the pinching of the tube occurs only in the tube insertion hole of the support plate and the tube passage hole of the bending portion, that is, only in the tube, the pinching portion of the tube The influence of the bending of the tube does not reach the tube outside the clip, and the straightness of the tube before and after the clip is kept almost constant regardless of the clamping pressure and release of the tube.
[0018]
In order to lock the end of the press plate to the support plate and support the press plate in the closed position, the upper half of the support plate is connected to the end of the press plate corresponding to the support plate. A support hole for loosely inserting the support plate, a locking claw for engaging with and disengaging from the edge of the support hole provided on the front surface of the upper half of the support plate, and a step for restricting the closing position of the push plate at the base of the upper half of the support plate It is preferable to have a configuration in which a portion is provided.
[0019]
With this configuration, when the end of the press plate is pressed in the closing direction, the upper half of the support plate enters the support hole from the middle of the closing of the press plate, and the support plate elastically warps backward to engage the locking claw. Passes through the support hole, and the locking claw locks to the edge of the support hole on the push plate. At this time, the pressing plate comes into contact with the step portions on both sides of the supporting plate, and the pressing plate is supported at the closed position. Thus, since the end portion of the pressing plate is connected to the receiving plate via the support plate, the pressing plate does not cause lateral displacement with respect to the receiving plate, and the closed position is stabilized.
[0020]
In addition, when the clip of the present invention is used to press the end of the pressing plate in the closing direction to prevent the flow of fluid in the tube, the receiving plate end and the pressing plate end are gripped by the fingertips of two fingers. When opening the push plate by releasing the locking relationship between the end of the push plate and the support plate, and releasing the tube from the clamping pressure and allowing the fluid to flow into the tube, the upper half of the support plate It is operated by pinching the end and the end of the pressing plate with the fingertips of two fingers. Therefore, as in the invention described in claim 7, the knobs are respectively formed on the upper half of the support plate, the end of the pressing plate, and the end of the receiving plate, and the knob of the upper half of the support plate is the upper half of the support plate. It is preferable that the end portion of the pressing plate is bent in a forwardly inclined shape, and the knob portion of the pressing plate end portion is configured such that the pressing plate end portion is inclined upward from the support hole to the pressing plate end.
[0021]
With this configuration, in the operation of pressing the pressing plate end portion in the closing direction, the fingertips of two fingers are hung on the pressing plate end portion and the receiving plate end portion, and this operation is performed by one finger. Since the fingertip, for example, the fingertip of the index finger, is hung on the upper surface of the end portion of the pressing plate that is inclined obliquely upward, it is easy to operate. Also, in the operation of releasing the locking relationship of the push plate with respect to the support plate, the fingertip of two fingers is hung on the end portion of the upper half of the support plate and the end portion of the push plate, and this is done by one finger. One fingertip, for example, the fingertip of the thumb is hung on the end of the press plate on the tube, and the fingertip of the other finger, for example, the fingertip of the index finger, is hung on the end of the upper half of the support plate bent in a forward slanted shape. Therefore, it becomes easy to operate.
[0022]
In the state where the push plate is in the open position, the end portion of the push plate is separated from the end portion of the upper half of the support plate. The end portion of the upper half of the support plate is supported by the end portion of the push plate. By facing the rotation trajectory of the hole, the outer surface of the upper half of the support plate bent in a forward slanted shape supports the upper half of the support plate when pressing the end of the push plate in the closing direction. It functions as a guide surface to be inserted into the hole, and the upper half of the support plate can be reliably inserted into the support hole.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0024]
FIG. 1 is a perspective view of a tube clip showing an embodiment of the present invention, FIG. 2 is a longitudinal central sectional view of the tube clip showing an embodiment of the present invention, and FIG. 3 is a view of the tube clip showing the embodiment of the present invention. FIG. 4 is a plan view of a main part showing a use mode.
[0025]
In each figure, the receiving plate 1 and the pressing plate 2 are integrally formed through the bending portion 3. A support plate 4 is erected on the receiving plate 1 in a direction crossing the plate surface near the end of the receiving plate 1, and tube through holes 5, into which the tube A is loosely inserted, are respectively inserted into the supporting plate 4 and the bending portion 3. 6 is provided.
[0026]
In a portion between the support plate 4 and the curved portion 3 where the receiving plate 1 and the pressing plate 2 face each other,
Tube clamping means 7 for clamping the tube is provided. The tube clamping means 7 corresponds to the two protrusions 7a and 7b provided close to the receiving plate 1 in the direction crossing the plate surface, and the two protrusions 7a and 7b. The projection 7c is formed on the pressing plate 2 with the tip facing between the projections 7a and 7b.
[0027]
The upper half 4a of the support plate 4 is slightly smaller in width than the lower half having the tube through holes 5, and the support plate upper half 4a corresponds to the support plate upper half 4a. A support hole 8 into which the portion 4a is loosely inserted is provided, and a locking claw 9 that engages and disengages with the edge of the support hole 8 is provided on the front surface (surface directed to the curved portion) of the support plate upper half 4a. On both sides of the base portion of the half portion 4a, step portions 10 for restricting the closing position of the push plate 2 are provided.
[0028]
The end 4b, the pressing plate end 2a and the receiving plate end 1a of the support plate upper half 4a are used as knobs, respectively.For this purpose, the end 4b of the support plate upper half 4a is The push plate end 2a is inclined obliquely upward from the support hole to the push plate end, and the receiving plate end 1a is formed by extending the receiving plate 1 as a knob.
[0029]
In the embodiment, in order to increase the rigidity of the pressing plate end 2a as the pressing plate 2 near the support hole 8, the reinforcing plate 11 is provided on both sides of the pressing plate end 2a up to the pressing plate end. The support hole 8 is positioned inside the intermediate portion of the plate 11.
[0030]
The clip according to the embodiment is integrally formed of a rigid material such as a synthetic resin material, and a thin portion 12 is provided in the curved portion 3 across the tube passage hole 6 of the curved portion 3. In the state where the push plate 2 is released from the locking relationship with the support plate 4, the push plate end portion 2a is also connected to the end portion 4b of the support plate upper half 4a. It is in a naturally open position.
[0031]
With the push plate 2 in the open position, the tube A is inserted through the tube through hole 5 of the support plate 4 and the tube through hole 6 of the bending portion 3 to attach the clip to the tube A. In this state, both the tube through-holes 5 and 6 and the tips of the projections 7a and 7b of the receiving plate 1 are elastically contacted with the tube A without being greatly deformed, and the clip can be moved on the tube A by friction. ing.
[0032]
In the above configuration, in a state where the push plate 2 is separated upward from the support plate 4 and the push plate 2 is in the open position, the tube A is substantially straight and the fluid flows in the tube A.
[0033]
When the flow of the fluid in the tube A is blocked, the receiving plate end 1a and the pressing plate end 2a are picked and operated by the fingertips of two fingers to press the pressing plate 2 in the closing direction. At this time, the support plate upper half 4 a enters the support hole 8, and the support plate 4 elastically warps backward when the locking claw 9 passes through the support hole 8, and the locking claw 9 passes through the support hole 8. To be engaged with the edge of the support hole 8. At this time, the push plate 2 comes into contact with the step portion 10 of the support plate 4 and the closed position of the push plate 2 is restricted and stabilized. Here, the outer surface of the end portion 4b of the upper half portion 4a of the support plate bent in a forward inclined shape is a guide for inserting the upper half portion 4a of the support plate into the support hole 8 while the push plate 2 is closed. It functions as a surface, and the support plate upper half 4a can be surely placed in the support hole 8.
[0034]
Thus, the pressing plate 2 is closed and the tube A is clamped in such a manner that the projection 7c on the side of the pressing plate 2 is pushed between the two projections 7a and 7b on the receiving plate 1 side. In a side view, it bends like a letter and is pressed flat to prevent the fluid in the tube A from flowing. At this time, the bending of the tube A by the three upper and lower protrusions 7a, 7b, 7c at different positions occurs while being inserted into the tube through hole 5 of the support plate 4 and the tube through hole 6 of the bending portion 3. The influence of the bending of the pinching portion of A does not reach the tube A outside the clip, and the straightness of the tube A before and after the clip is kept almost constant regardless of the pinching pressure and release of the tube A. (See Figure 4)
Next, when resuming the flow of the fluid in the tube A, the fingertips of the two fingers are bent obliquely upward on the tube A and the end 4b of the upper half 4a of the support plate bent in a forward slanting shape. When the handle 2 is picked up by being pushed over the push plate end 2a that rises in an inclined manner, the locking claw 9 comes off from the edge of the support hole 8, and the push plate 2 applied to the restoring elasticity of the tube A and the thin portion 12 of the curved portion 3 of the clip. As a result, the push plate 2 is instantaneously opened without resistance and the flow of the fluid in the tube A is resumed.
[0035]
【The invention's effect】
The present invention is implemented in the form as described above, and according to the present invention, the clip is used while being attached to the tube, and the pinching and releasing of the tube is a one-touch type by a pinch operation with two fingertips. It can be used reliably, making its use convenient. Moreover, since the mounting position of the clip on the tube can be arbitrarily set in advance, the handling is also convenient from this aspect. Furthermore, since the amount of protrusion to the both sides of the tube is small when the clip is attached to the tube, the presence of the clip does not get in the way even if the clip is attached to the tube.
[0036]
In addition, as a tube clamping means, a means is adopted in which the tube is pressed by three upper and lower projections at different positions, and the tube is bent in a square shape in a side view and clamped in a flat shape. The joint area can be expanded, and the pressure load applied to the tube itself can be reduced. In addition, since the bending of the tube at this time occurs at the portion inserted through the tube passage hole of the support plate and the tube passage hole of the curved portion, the straightness of the tube before and after the clip is almost independent of the clamping and release of the tube. It is kept constant and convenient to use from this aspect.
[Brief description of the drawings]
FIG. 1 is a perspective view of a tube clip showing an embodiment of the present invention.
FIG. 2 is a longitudinal center sectional view of a tube clip showing an embodiment of the present invention.
FIG. 3 is a plan view of a tube clip showing an embodiment of the present invention.
FIG. 4 is a cross-sectional view of a main part showing a usage mode of the present invention.
[Explanation of symbols]
1 receiving plate 1a receiving plate end 2 pressing plate 2a pressing plate end 3 bending portion 4 supporting plate 4a supporting plate upper half 4b supporting plate upper half end 5 tube through hole 6 tube through hole 7 tube clamping means 7a Protrusion 7b Protrusion 7c Protrusion 8 Support hole 9 Locking claw 10 Step portion 11 Reinforcement plate 12 Thin portion A Tube

Claims (6)

The receiving plate and the pressing plate are integrally formed through the curved portion, the support plate is erected on the receiving plate, and the tube pressing means for pressing the tube is provided at the portion where the receiving plate and the pressing plate face each other. The support plate is provided with a support hole in which the upper half of the support plate is loosely inserted, and the upper half of the support plate is engaged with and disengaged from the support hole. And a step portion for restricting the closing position of the push plate is provided at the base portion of the upper half of the support plate .   The tube clip according to claim 1, wherein a locking claw that engages with and disengages from the edge of the support hole is provided on the front surface of the upper half of the support plate. A knob is formed at each of the upper half of the support plate, the end of the pressing plate, and the end of the receiving plate, and the knob of the upper half of the support plate has the end of the upper half of the support plate in a state where the clip is open. The push plate end knob is bent in a forwardly inclined shape, and the push plate end portion is inclined upward from the support hole to the press plate end with the clip closed. The tube clip according to claim 1 or 2 . The support plate and the bending portion are each provided with a tube through hole into which the tube is loosely inserted, and the tube clamping means is provided between the support plate and the bending portion, and the receiving plate and the pressing plate face each other. The tube clip according to any one of claims 1 to 3 , wherein the tube clip is provided. The entire clip was integrally molded with a rigid material such as a synthetic resin material, and a thin part was provided in the curved part across the tube passage hole in the curved part, and the habit of spreading the push plate in the opening direction was given to the thin part. The tube clip according to claim 4, wherein: The tube clamping means is composed of two protrusions provided close to the receiving plate in a direction crossing the tube, and protrusions corresponding to the two protrusions and provided on the pressing plate with the tip facing between the two protrusions. The tube clip according to any one of claims 1 to 5 , wherein the tube clip is characterized.

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