JP2005042740A - Clamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clamp which has the small number of components and a simple constitution. <P>SOLUTION: The clamp 11 has a first clamp band 13 and a second clamp band 14. Each one end is connected by a hinge 12 so as to be openable/closable. An operation member 21 is rotatably connected to the other end of the first clamp band 13. An engaging face 37 as an engaging part is provided to the other end of the second clamp band 14 so as to be engaged to the tip of the operation member 21. The operation member 21 has a storing cylinder 26 in a cylindrical shape with a bottom around a shaft body 22. A first nut 29 is screwed to a first male screw formed to the tip of the shaft body 22. A coil spring 31 as an energizing member is interposed between the first nut 29 and the inner bottom of the storing cylinder 26 in a compressed state. The storing cylinder 26 is energized to the base end side of the shaft body 22. Also, an operation handle 34 is provided to the storing cylinder 26. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a clamp for connecting a pipe used in a production line for producing a hair dye, a decoloring agent, and the like.
[0002]
[Prior art]
Conventionally, a clamp is used to connect a pipe in a production line for producing a hair dye or a decolorizing agent. As this type of clamp, the following is known (for example, see Patent Document 1). That is, a pair of band members constituting the clamp are configured to be opened and closed by a hinge, and a spring handle is rotatably supported on a free end portion of one band member via a pivot shaft. A holding portion of the engagement shaft is swingably supported on the loose fitting shaft of the spring handle, and an engagement groove that engages with the engagement shaft is provided at the free end of the other band member. Further, a spring having a predetermined tensile force is interposed between the loose fitting shaft of the spring handle and the support shaft that supports the handle.
[0003]
Then, the pair of band members hold the pipe connection portion, and in this state, the engagement shaft is engaged with the engagement groove, and the handle is rotated to tighten the clamp to the pipe connection portion. ing.
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 5-18612 (pages 6-8, FIG. 1)
[0005]
[Problems to be solved by the invention]
However, the conventional clamp requires a loose fitting shaft, a loose fitting hole for loosely fitting the loose fitting shaft, an engaging shaft, a holding portion of the engaging shaft, and a support shaft in a spring handle as an operation member. . Therefore, there are problems that the number of parts is large and the configuration is complicated.
[0006]
The present invention has been made paying attention to such problems existing in the prior art. The object is to provide a clamp with a small number of parts and a simple construction.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problem, the clamp according to the first aspect of the present invention includes a pair of clamp bands that cover each connection portion of the pipe, and one end of each clamp band. An operating member that is rotatably connected to the other end, and an engaging portion that engages the tip of the operating member with the other end of the other clamp band, and the operating member is moved in the engaging direction by the biasing member. In addition to being urged, the operation member is stretched against the urging force of the urging member and engaged with the engaging portion, and the engagement state is maintained by the urging force of the urging member. It is.
[0008]
The clamp according to a second aspect of the present invention is the clamp according to the first aspect, wherein the operation member is a predetermined range in which a housing cylinder having a bottomed cylindrical shape around the shaft body has a bottom portion as a base end side of the shaft body. And a nut is screwed onto a male screw threaded at the tip of the shaft body, and a coil spring is interposed between the nut and the inner bottom of the housing cylinder in a compressed state. Thus, the housing cylinder is urged toward the base end side of the shaft body, and the housing cylinder is provided with an operation handle.
[0009]
A clamp according to a third aspect of the present invention is the clamp according to the second aspect, wherein the outer surface of the base end portion of the housing cylinder constituting the operation member is a locking portion, and the locking portion and the engaging portion of the clamp band Are engaged by the concavo-convex relationship.
[0010]
According to a fourth aspect of the present invention, in the clamp according to the second or third aspect, the nut is composed of a plurality of nuts, and the looseness of the nut on the proximal end side is regulated by the nut on the distal end side. It is comprised as follows.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the present invention is embodied in a clamp for connecting a pipe used in a production line for producing a hair dye, a decoloring agent, and the like will be described in detail with reference to the drawings.
[0012]
First, as shown in FIG. 1 and FIG. 3, the clamp 11 is composed of a first clamp band 13 and a second clamp band 14 each having a semicircular shape in which each end is connected by a hinge 12 so as to be opened and closed. It is comprised so that between end parts may be connected. Concave grooves 16 that extend continuously are formed on the inner peripheral surfaces of the first clamp band 13 and the second clamp band 14, respectively, and an annular flange 17 that protrudes from the end of each pipe 15 to be abutted. It is designed to be inserted. A packing 18 is sandwiched between the flanges 17 of both pipes 15, and the packing 18 has a rubber plate 18b bonded to both surfaces of an annular metal plate 18a. The rubber plate 18b is fitted into an annular groove 17a provided on the outer surface of the flange 17.
[0013]
At the other end of the first clamp band 13, a bifurcated shaft support portion 19 extends obliquely outward. A pivot shaft 20 is inserted into and supported by the shaft support portion 19 so as to pass through a base end portion of a cylindrical shaft body 22 constituting the operation member 21. The pivot shaft 20 has a head 20a at one end, and two nuts 23 are screwed to a male screw provided at the other end via a washer 20b. The shaft body 22 is rotatable about the pivot shaft 20.
[0014]
As shown in FIG. 2, a locking step portion 24 is provided in the central portion of the shaft body 22, and the distal end side is a small diameter portion 25 from the locking step portion 24. A housing cylinder 26 having a bottomed cylindrical shape is fitted around the small diameter portion 25 of the shaft body 22 so as to be movable in the axial direction within a predetermined range with the bottom portion as a base end side of the shaft body 22. The outer surface of the base end portion of the housing cylinder 26 forms a locking surface 27 having a circular arc shape as a locking portion, and the end of the locking surface 27 is engaged with the locking step portion 24 of the shaft body 22. . A first nut 29 is screwed into the first male threaded portion 28 threaded at the tip of the shaft body 22, and an urging member is provided between the first nut 29 and the inner bottom portion 30 of the housing cylinder 26. The coil spring 31 is interposed in a compressed state. The coil spring 31 is configured to urge the accommodating cylinder 26 in an engaging direction with an engaging portion described later, that is, toward the proximal end side of the shaft body 22. A second nut 32 is screwed onto the distal end side of the shaft body 22 from the first nut 29 so as to engage with the first nut 29, so that the first nut 29 is prevented from loosening. A female screw 33 is threaded on the opening side of the housing cylinder 26 at a facing position, and a second male screw portion 35 provided at an end of the operation handle 34 is screwed to each of the female screws 33.
[0015]
As shown in FIG. 1, a bifurcated sandwiching portion 36 extends obliquely outward at the other end of the second clamp band 14 so that the shaft 22 of the operation member 21 is sandwiched. An engaging surface 37 as an engaging portion with which the engaging surface 27 of the housing cylinder 26 of the operation member 21 is engaged is recessed in an arc shape on the outer surface of the holding portion 36.
[0016]
The pair of clamp bands 13 and 14, the operation member 21 and the like are all made of stainless steel from the viewpoint of mechanical strength and rust prevention. And the clamp 11 of this embodiment is comprised by the pair of clamp bands 13 and 14, the operation member 21, the latching surface 27, the engagement surface 37 grade | etc.,.
[0017]
Next, the operation of the clamp will be described below.
When the ends of the pipe 15 are connected using the clamp 11, first, both clamp bands 13 and 14 are opened larger than the flange 17 of the pipe 15 as shown in FIG. On the other hand, a packing 18 is sandwiched between the flanges 17 of both pipes 15, and the rubber plate 18 b is fitted into a groove 17 a provided in the flange 17. In this state, both flanges 17 are fitted into the concave grooves 16 of the second clamp band 14. Next, the first clamp band 13 is rotated, and the flange 17 is fitted into the concave groove 16. As a result, as shown in FIG. 4, both clamp bands 13 and 14 are in a state of holding the flange 17 of the pipe 15.
[0018]
At this time, as indicated by a two-dot chain line in FIG. 5, the operating member 21 extends straight from the shaft support portion 19. From this state, the operation handle 34 is grasped with a finger and extended against the biasing force of the coil spring 31. Then, as shown by the solid line in FIG. 5, the operating member 21 is rotated in a state of being stretched against the urging force of the coil spring 31 so that the locking surface 27 of the housing cylinder 26 does not contact the outer surface of the clamping portion 36. Let
[0019]
As shown in FIG. 6, when the operation handle 34 is loosened at a position where the engagement surface 37 of the holding cylinder 26 faces the engagement surface 37 of the holding portion 36, the engagement force is applied by the coil spring 31 in the storage cylinder 26. The stop surface 27 is engaged with the engagement surface 37.
[0020]
When removing the clamp 11 from the pipe 15, the operation handle 34 is pulled from the state shown in FIG. 6, and the locking surface 27 of the housing cylinder 26 is separated from the engaging surface 37. Next, the operation member 21 is rotated in a state where the operation handle 34 is pulled and maintained, and the engagement between the locking surface 27 and the engagement surface 37 is released. Subsequent operations are removed by performing the reverse operation of connecting the end of the pipe 15.
[0021]
The effects exhibited by the above embodiment will be described below.
The operation member 21 of the clamp 11 according to this embodiment includes a shaft body 22, a housing cylinder 26, a coil spring 31, a first nut 29, and a second nut 32. This includes a loosely fitting shaft for rotatably holding the spring handle of the operation member 21 that is conventionally required, a loosely fitting hole for loosely fitting the loosely fitted shaft, an engaging shaft, and holding of the engaging shaft. No part or support shaft is required. That is, the housing cylinder 26 of the operation member 21 is urged toward the proximal end side of the shaft body 22 by the coil spring 31, and the locking surface 27 of the housing cylinder 26 can be engaged and held with the engaging surface 37 of the clamping portion 36. did. Therefore, the functions of the engaging member and the locking member can be provided. For this reason, the number of parts is smaller than that of the clamp having the conventional configuration, and the configuration can be simplified.
[0022]
The operation member 21 has a housing cylinder 26 arranged around the shaft body 22, and a first nut 29 is screwed to the tip of the shaft body 22, and the first nut 29 and the inner bottom portion of the housing cylinder 26 A coil spring 31 is interposed between the coil spring 30 and the coil 30 in a compressed state. In addition, an operation handle 34 is provided in the storage cylinder 26. For this reason, it is possible to engage the engaging surface 27 of the receiving cylinder 26 with the engaging surface 37 of the engaging portion only by pulling the operating handle 34 with one hand, and to open and close the clamp 11 with one touch. , Can make the operation easy.
[0023]
An engagement surface 37 that engages with the engagement surface 27 of the operation member 21 is provided at the end of the second clamp band 14. Further, the engaging surface 37 is pressed against the locking surface 27 of the housing cylinder 26 by the biasing force of the coil spring 31. For this reason, a stable retaining effect can be obtained.
[0024]
The second nut 32 is screwed so as to engage with the first nut 29. Therefore, loosening of the first nut 29 can be prevented.
-The clamping part 36 and the engaging surface 37 may be provided in the 1st clamp band 13, and the axial support part 19, the operation member 21, etc. may be provided in the 2nd clamp band 14. FIG.
[0025]
In addition, this embodiment can also be changed and embodied as follows.
-You may use the operation member 21 as shown to the continuous line of FIG. That is, a butterfly-shaped accommodation cylinder 38 is externally fitted to the operating member 21 and a first nut 29 is screwed to a first male threaded portion 28 screwed at the tip of the shaft 22. . A coil spring 31 is interposed in a compressed state between the first nut 29 and the bottom surface of the recess 39 formed at the center of the butterfly housing cylinder 38, and the butterfly housing cylinder 38 is connected to the base end of the shaft body 22. It is configured to be biased to the side. In addition, the locking surface 27 of the butterfly-shaped storage cylinder 38 is engaged with the engagement surface 37 of the clamping part 36. At this time, the clamping portion 36 of the first clamp band 13 is brought into contact with the shaft support portion 19 of the second clamp band 14 by the biasing force of the coil spring 31.
[0026]
When the clamp 11 is removed from the pipe 15, the operation member 21 is rotated while being extended by hand. Thereafter, when the hand is released from the operation member 21, the operation member 21 returns to the contracted state by the urging force of the coil spring 31 as indicated by a two-dot difference line in FIG. 7.
[0027]
The locking surface 27 may have a flat shape, a concave shape, a stepped shape, or the like in cross section. In these cases, the cross-sectional shape of the engagement surface 37 is flat, convex, and stepped, respectively.
[0028]
-You may use the nut which has a locking structure for the locking of the 1st nut 29. FIG. For example, a nut in which a friction ring (special spring) is integrated in the nut may be used. When configured in this way, it is not necessary to use a plurality of nuts, the number of parts is small, and the configuration can be simplified.
[0029]
The operation handle 34 of the operation member 21 may be joined to the housing cylinder 26 by welding.
-As a biasing member, you may use a leaf | plate spring, a disc spring, a bamboo shoot spring, a rubber member, etc. other than a coil spring.
[0030]
-The clamp 11 of this embodiment can also be used for connecting the piping 15 in the production line which manufactures a shampoo, rinse, a treatment, a hairdressing agent, skin cosmetics, and other detergents.
[0031]
Further, the technical idea that can be grasped from the embodiment will be described below.
The inner circumferential surface of the clamp band has a concave groove continuously formed so as to hold a flange projecting from an end of the pipe. Clamp according to item. When comprised in this way, the connection of piping which has a flange can be performed reliably.
[0032]
【The invention's effect】
Since this invention is comprised as mentioned above, there exist the following effects.
According to the clamp of the first aspect of the invention, the number of parts of the operation member is small, and the configuration can be simplified.
[0033]
According to the clamp of the invention of claim 2, in addition to the effect of the invention of claim 1, by operating the operation member, the clamp can be opened and closed with one touch, facilitating the operation. it can.
[0034]
According to the clamp of the invention described in claim 3, in addition to the effect of the invention described in claim 2, a stable retaining effect can be obtained.
According to the clamp of the invention described in claim 4, in addition to the effect of the invention described in claim 2 or claim 3, it is possible to prevent loosening of the nut on the base end side.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a clamp according to an embodiment.
FIG. 2 is an enlarged sectional view showing an operation member.
FIG. 3 is an exploded perspective view showing a state in which a clamp tries to hold a pipe.
FIG. 4 is a perspective view showing a state where a clamp holds a pipe.
FIG. 5 is a cross-sectional view showing a state in which the operating member is rotated by pulling the operating handle.
FIG. 6 is a cross-sectional view showing a state in which piping is connected using a clamp.
FIG. 7 is a cross-sectional view showing another example of the clamp.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Clamp, 12 ... Hinge, 13 ... 1st clamp band, 14 ... 2nd clamp band, 15 ... Piping, 21 ... Operation member, 22 ... Shaft body, 26 ... Housing cylinder, 27 ... Locking as a locking part 28, first male thread portion, 29, first nut, 30, inner bottom portion, 31, coil spring as an urging member, 32, second nut, 34, operation handle, 37, engagement as an engagement portion surface.

Claims (4)

One end of each clamp band is connected by a hinge so as to be openable and closable, a pair of clamp bands that cover a connection portion of the pipe, an operation member that is rotatably connected to the other end of one clamp band, and the other clamp band An engaging portion with which the other end of the operating member is engaged,
The operating member is urged in the engaging direction by the urging member, and the operating member is extended against the urging force of the urging member to engage with the engaging portion, and is engaged by the urging force of the urging member. Clamp configured to be held. The operating member is a male screw that is externally fitted with a bottomed cylindrical housing cylinder around the shaft body so as to be movable within a predetermined range with the bottom portion as the base end side of the shaft body. A nut is screwed together, and a coil spring is interposed between the nut and the inner bottom portion of the receiving cylinder in a compressed state to urge the receiving cylinder toward the base end side of the shaft body, and to the receiving cylinder. The clamp according to claim 1, further comprising an operation handle. The base end part outer surface of the accommodating cylinder which comprises the said operation member is made into a latching | locking part, This latching part and the engaging part of a clamp band are comprised so that it may engage by uneven | corrugated relationship. Clamp. The clamp according to claim 2 or 3, wherein the nut is constituted by a plurality of nuts, and the looseness of the nut on the proximal end side is regulated by the nut on the distal end side.

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