JP2017185608A - Hose clamp releasing tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool capable of easily and certainly keeping a hose clamp in an expansion state and releasing that, with a simple structure.SOLUTION: A hose clamp 1 is made from an annular piece 10 obtained by curving a band-shaped body having elasticity, is provided with clamp claws 12, 13 at both ends, is provided with a lock portion 14 near one end, and is provided with an engaging portion 16 at the clamp claw 13 at the other end. By bringing the clamp claws 12 and 13 close to each other, a diameter of the annular piece 10 is expanded against elasticity. By moving the lock portion 14 in a width direction of the band-shaped body to be engaged with the engaging portion 16, the annular piece 10 keeps a state in which a diameter expands. A tool 2 is equipped with a pair of clipping portions 26 and 27 coming close to/separating from each other, a shift member 31 carried by a cylinder 30, a push rod 32 which moves the shift member 31 to a shift position, and a lock mechanism 33 which keeps the shift member 31 at the shift position.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a hose clamp release tool.

  For example, in Patent Document 1, a belt-like piece is formed in an annular shape, a first ear is provided at one end of the belt-like piece, a second ear is provided at the other end of the belt-like piece, and the other end. A contact portion is formed on the portion, and the first ear portion and the second ear portion are brought close to each other and the diameter is expanded and deformed, and the expanded state is maintained by moving the contact portion in the lateral direction. Hose clamps are described (paragraphs 0003-0005, FIGS. 1-3). In Patent Document 1, the first ear portion and the second ear portion of the hose clamp are respectively held by the movable block and the fixed block, and the first ear portion is rotated by rotating the bolt portion screwed to the movable block. The diameter of the belt-shaped piece is expanded and deformed by approaching the second ear portion, and the first bolt of the movable block is rotated to push and move the contact portion in the lateral direction. A tool for removing a hose clamp is disclosed in which the diameter of the belt-shaped piece is held in an expanded and deformed state by being brought into contact with the stopper portion of the portion.

  Moreover, when releasing the hose clamp of the structure as described in Patent Document 1, generally, a pair of main bodies having a grip portion formed at one end and a handle portion formed at the other end as a tool. So-called pliers, pliers and the like (hereinafter collectively referred to as pliers as representative of these tools) are used. As shown in FIG. 6, a plurality of grooves extending in a direction perpendicular to the opening / closing direction of the holding portions 26 ′ and 27 ′ are formed in both the holding portions 26 ′ and 27 ′ of the pliers. When the hose clamp 1 is released using pliers, the first and second ears at the front ends of the pliers clamping portions 26 ′ and 27 ′ so as not to interfere with the contact portion (the lock portion 14 in FIG. 6). (Clamp claws 12 and 13 in FIG. 6), gripping both handle portions of the pliers to reduce the distance between both handle portions, bringing the clamp claws 12 and 13 close to each other, and bending the strips into an annular piece (FIG. 6 with the diameter of the annular piece 10) expanded, as shown by the arrow in FIG. 6 (a), the pliers are twisted so that the lock portion 14 is annularly provided in the vicinity of one end of the annular piece 10. The hose clamp 1 is maintained in an expanded state by moving in the width direction of the piece 10 and engaging with a fitting hole (engagement portion 16 in FIG. 6) formed in the clamp claw 13 at the other end.

Japanese Patent Laying-Open No. 2015-77664

  In Patent Document 1, it is necessary to rotate the bolt portion screwed to the movable block in order to cause the first ear portion and the second ear portion to approach each other and to expand and deform the diameter of the strip. Furthermore, in order to move the contact portion of the hose clamp in the lateral direction, it is necessary to rotate the first bolt. That is, in Patent Document 1, in order to hold (release) the hose clamp in the expanded state, the two bolts of the bolt portion and the first bolt must be rotated, respectively. There were problems such as time-consuming and complicated structure.

  In the case of the pliers as shown in FIG. 6, when the pliers are twisted to move the lock portion 14 in the width direction of the annular piece 10 provided in the vicinity of one end of the annular piece 10, As shown in FIG. 6 (a), the clamp claws 12 and 13 are pointed with respect to the grooves formed in the sandwiching portions 26 ′ and 27 ′ of the pliers, and are indicated by arrows in FIG. 6 (b). As described above, the clamp claws 12 and 13 are easily slipped along the grooves of the sandwiching portions 26 ′ and 27 ′, and the clamp claws 12 and 13 are detached from the sandwiching portions 26 ′ and 27 ′ so that the lock portion 14 is engaged with the engagement portion 16. There is a problem that it is difficult to release the hose clamp 1 because it cannot be combined. Further, the pliers are twisted from the state in which the diameter of the annular piece 10 is expanded, and the lock portion 14 provided in the vicinity of one end of the annular piece 10 is moved in the width direction of the annular piece 10, so When engaging with the engagement portion 16 formed on the hose clamp 1 using pliers, it is necessary to adjust the gap between the sandwiching portions 26 'and 27' by adjusting the gripping force of the handle portion of the pliers. There was a problem that technical skill of the operator was necessary to release

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a tool that can easily and surely hold and release a hose clamp with a simple configuration.

  In order to achieve the above object, a hose clamp release tool according to the present invention comprises an annular piece obtained by bending an elastic band-like body, clamp claws are provided at both ends of the annular piece, and one end of the annular piece is provided. A lock part is provided in the vicinity, and an engaging part that can be engaged with the lock part is provided on the clamp claw at the other end of the annular piece. The annular piece is enlarged in diameter, and the lock piece is relatively moved in the width direction of the belt-like body and engaged with the engaging part to maintain the enlarged diameter of the annular piece. A hose clamp release tool configured to be configured to have a holding portion that is arranged to face each other and holds both the clamp claws, and the holding portions are relatively close to and away from each other. A pair to move A holding member, a shift member provided on one of the holding portions, having the holding portion, supported on the other side of the holding portion so as to be movable in the width direction of the belt-like body, and provided on the other side of the holding portion A push rod that moves the shift member to a shift position where the lock member engages with the engagement portion by pressing the shift member when a pair of sandwiching portions approach each other, and the shift member shifts the shift member And a locking mechanism for holding the position.

  According to the present invention, it is possible to easily and reliably hold and release the hose clamp with a simple configuration including a pair of clamping portions, a shift member, a push rod, and a lock mechanism. Tools can be provided.

It is the disassembled perspective view shown in order to demonstrate the whole one Embodiment of the release tool of the hose clamp of this invention. The perspective view (a) of the main part of the hose clamp, the cross-sectional plane of the main part of the tool and the hose clamp, shown to explain the state of gripping the clamp claw of the hose clamp with the holding part of the release tool of the present invention It is the side view (c) which showed the figure (b) and the part in the cross section. From the state of FIG. 2, the gripping parts of the release tool are brought close to each other to enlarge the diameter of the annular piece, and the lock part provided in the vicinity of one end of the annular piece is formed in the clamp pawl at the other end of the annular piece The main part perspective view (a), the transverse plane view (b) of the main part of the tool and the hose clamp, and the side view showing a part thereof in cross section (C). The state in which the gripping parts of the release tool are brought closer to each other from the state of FIG. 3, the shift member is moved to the shift position in the width direction of the strip by the shift mechanism, and the shift member is held in the shift position by the lock mechanism. They are a perspective view (a) of a main part of a hose clamp, a transverse plan view (b) of a main part of a tool and a hose clamp, and a side view (c) showing a part thereof in cross section. From the state shown in FIG. 4, the gripping portions of the release tool are separated from each other, the lock portion is engaged with the engagement portion provided on the clamp claw at the other end of the annular piece, and the state where the diameter of the annular piece is expanded is maintained. The main part perspective view (a) of the hose clamp, the transverse plan view (b) of the main part of the tool and the hose clamp, and the side view showing a part thereof in cross section, which are shown for explaining the state in which the hose clamp is released It is a figure (c). The cross-sectional top view (a) of the principal part of a pliers and a hose clamp shown in order to demonstrate the prior art which releases a hose clamp using pliers, and the side view (b) which showed the part in the cross section is there.

  An embodiment of the present invention will be described in detail with reference to FIGS. As used herein, the terms “one” and “the other” are used to specify one of a pair of components, and particularly mean only one of the pair of components. However, “one” and “the other” can be interchanged.

  First, the configuration of the hose clamp 1 in the present embodiment will be described mainly based on FIGS. 2 and 3. The hose clamp 1 is composed of an annular piece 10 formed by bending a band having elasticity. The annular piece 10 is curved to a diameter smaller than the outer diameter of the hose to be clamped when the hose is not clamped, and is elastically expanded and clamped when the hose is clamped. It is configured to tighten the hose. The one end 10a side of the annular piece 10 is narrowly formed over a predetermined length except for a lock portion 14 to be described later, and the other end 10b side extends in the predetermined length direction at the intermediate portion in the width direction. A through hole 11 is formed. And the clamp claws 12 and 13 are integrally formed by bending the both ends of the strip | belt-shaped body which comprises the annular piece 10 radially outward along the width direction. The one end 10a side of the annular piece 10 formed narrowly extends into the through hole 11 on the other end 10b side. That is, a part of the annular piece 10 overlaps in the circumferential direction on the one end 10a side and the other end 10b side. Therefore, in a state where the diameter is reduced by the elasticity of the annular piece 10, both the clamp claws 12 and 13 are separated from each other, and the diameter of the annular piece 10 can be increased by bringing both the clamp claws 12 and 13 close to each other. The one end 10a side of the annular piece 10 formed on the narrow side is opposite to the lock portion 14 in the vicinity of the clamp claw 12 in order to avoid interference with the side edge of the through hole 11 in the clamp claw 13. It is also possible to form a narrower width by, for example, notching the side edge of the. Moreover, the clamp nail | claw 12 can be shape | molded by arbitrary widths.

  A hook-shaped part is formed on the side of the annular piece 10 near the one end 10a side, and a lock part 14 is formed by bending the part to stand up. A stopper 15 is formed on the clamp claw 13 formed at the other end 10 b of the belt-like body so as to protrude from the through hole 11. A portion of the through hole 11 adjacent to the stopper portion 15 has a size that allows the lock portion 14 to pass along with the diameter increase / reduction of the annular piece 10. An engaging portion 16 that can engage with the lock portion 14 is recessed on the back surface of the stopper portion 15 that is located on the opposite side of the clamp claw 12 on the one end 10a side. In a state where the diameter of the annular piece 10 is increased, the one end 10a side on which the lock portion 14 is formed and the other end 10b side on which the stopper portion 15 is formed are relatively moved in the width direction so that the lock portion 14 is moved. By engaging with the engaging portion 16 of the stopper portion 15, the diameter of the annular piece 10 can be maintained, that is, the hose clamp 1 can be released. Further, when releasing the released state of the hose clamp 1, the lock portion 14 is released from the stopper portion of the through hole 11 only by releasing the engagement of the lock portion 14 with the engagement portion 16 due to the elasticity of the annular piece 10. 15 passes through a portion adjacent to 15 and returns to reduce the diameter of the annular piece 10. Note that the engaging portion 16 is not limited to being provided with a recess, and may be configured by providing, for example, a protrusion that can be engaged with the lock portion 14 on the back surface of the clamp claw 13.

  As shown mainly in FIG. 1, the tool 2 in the present embodiment includes a pair of main bodies 20 and 21. Rotating portions 22 and 23 that rotate relatively around an axis C indicated by a chain line in FIG. 1 by being fitted to intermediate portions of both main bodies 20 and 21 in a state of crossing each other in the same manner as pliers. Is formed. On the base end side of each main body 20, 21, handle portions 24, 25 that are grasped by an operator are provided, and on the distal end side, holding portions 26, 27 that are opened and closed by operating the handle portions 24, 25 are provided. ing. The holding part is closed by grasping both handle parts 24 and 25 and bringing them close to each other. In addition, this invention is not limited to this embodiment, For example, the intermediate part of both the main bodies 20 and 21 can also be combined with a pivot axis. In addition, a spring that urges the handle parts 24 and 25 of both the main bodies 20 and 21 to be separated (that is, to open the clamping parts 26 and 27) may be provided. When releasing the hose clamp 1, the tool 2 is oriented so that the axis C is along the width direction of the band-shaped body constituting the annular piece 10. Here, the mutually opposing surface of both clamping parts 26 and 27 is called an opposing surface. Holding surfaces 28 and 29 for holding the clamp claws 12 and 13 so that they can be respectively held are provided on the opposing surfaces of the holding portions 26 and 27.

  One holding portion 28 is formed on the opposite surface of the sandwiching portion 26 of the one main body 20, and a cylinder 30 that carries a shift member 31 described later is provided in the sandwiching portion 27 of the other main body 21. Yes. The cylinder 30 carries the shift member 31 so as to be movable in parallel with the axis C of the rotating portions 22 and 23 of the main bodies 20 and 21, that is, in the width direction of the band-shaped body constituting the annular piece 10. The cylinder 30 and the shift member 31 have a substantially rectangular cross-sectional shape.

  In the case of the embodiment shown in the figure, the holding portion 28 formed on the facing surface of one clamping portion 26 has a facing surface and a tip with respect to the other clamping portion 27 (downward in FIGS. 2 to 5C). It is comprised by the recessed part which the surface has open | released, and has the side wall part 28a and the ceiling wall part 28b. Further, as shown in FIG. 1, a gate-shaped protrusion that forms a side wall portion 29a and a ceiling wall portion 29b is provided as a holding portion 29 on the surface of the shift member 31 facing the one sandwiching portion 28. It has been.

  Further, a push rod 32 that protrudes toward the other holding portion 27 is provided on the side portion of the holding portion 26 of one main body 20. An opening 30 a into which the push rod 32 is inserted when the handle portions 26 and 27 are closed by gripping the handle portions of the main bodies 20 and 21, and a shift member 31. And an open portion 30b for accommodating the holding portion 29 provided in the. As shown in FIG. 2B to FIG. 5B, the proximal end face disposed on the opening 30 a side of the shift member 31 and the distal end face of the push rod 32 are respectively in the opening and closing directions of the sandwiching portions 26 and 27. On the other hand, cam surfaces 31a and 32a that are inclined at a predetermined angle are formed. The cam surfaces 31a and 32a of the shift member 31 and the push rod 32 constitute a shift mechanism that moves the shift member 31 to the shift position in the width direction of the belt-shaped body constituting the annular piece 10 in a state where the diameter of the annular piece 10 is expanded. To do. Here, the shift position refers to the position of the shift member 31 for causing the front end of the lock portion 14 to face the engagement portion 16 and then engaging the lock portion 14 with the engagement portion 16.

  The lock mechanism 33 that holds the shift member 31 in the shift position has a bottomed hole 34 formed on the surface of the shift member 31 opposite to the surface on which the holding portion 29 is provided, and a protrusion 35a on the tip surface. A top 35 to be inserted into the guide hole 34, a spring 36 for biasing the top 35 to protrude from the hole 34, and a projection 35a of the top 35 when the shift member 31 is moved to the shift position. And a through hole 37 formed in the cylinder 30.

  Next, the state of the tool 2 and the hose clamp 1 at each stage when the hose clamp 1 is released using the tool 2 configured as described above will be described with reference to FIGS. 2-5, (a) is the principal part perspective view which each showed the state of the hose clamp 1, (b) shows the principal part of the tool 2 and the hose clamp 1 typically, respectively. (C) is the side view which showed the front-end | tip part of the tool 2, and the principal part of the hose clamp 1 in the partial cross section, respectively.

  As shown in FIG. 2A, the hose clamp 1 before being released is in a state where both clamp claws 12 and 13 are separated from each other and the annular piece 10 is reduced in diameter by elasticity. When releasing the hose clamp 1 from this state, the shift member 31 is accommodated in the cylinder 30 in the initial state of the tool 2. Therefore, as shown in FIG. 2B, the lock mechanism 33 is positioned in the hole 34 against the urging force of the spring 36 with the projection 35 a of the top 35 abutting against the inner wall surface of the cylinder 30. doing. In this state, the handle portions 24 and 25 of the main bodies 20 and 21 are separated (opened) from each other, that is, the holding portions 26 and 27 are opened and the holding portions 28 and 29 are moved away from each other. From this state, as shown in FIG. 2C, the tips of the clamp claws 12 and 13 are engaged with the ceiling walls 28b and 29b of the holding portions 28 and 29, respectively.

  From this state, as shown in FIGS. 3B and 3C, when the handle portions 24 and 25 of the main bodies 20 and 21 of the tool 2 are gripped and brought close to each other, an arrow is displayed in FIG. As shown, the clamp claws 12 and 13 are close to each other, and the annular piece 10 is expanded in diameter. At this time, the lock portion 14 provided in the vicinity of the one end 10a side of the annular piece 10 formed narrow is adjacent to the stopper portion 15 of the through hole 11 in the clamp claw 13 formed on the other end 10b side. It moves to the back side of the clamp claw 13 on the other end 10b side. Further, the push rod 32 provided in one clamping part 26 enters the cylinder 30 from the opening 30 a of the cylinder 30 provided in the other clamping part 27. However, at this time, the cam surface 32 a of the push rod 32 does not press the cam surface 31 a of the shift member 31, and the shift member 31 does not move in the width direction of the band-shaped body constituting the annular piece 10.

  Subsequently, when the handle portions 24 and 25 of the main bodies 20 and 21 of the tool 2 are further grasped and brought close to each other, the cam surface 32a of the push rod 32 becomes a cam of the shift member 31 as shown in FIG. The surface 31 a is pressed, and the shift member 31 moves to the shift position in the width direction of the belt-shaped body constituting the annular piece 10 so as to protrude from the cylinder 30. As a result, the clamp claw 13 is engaged with and held by the side wall portion 29a of the holding portion 29 provided on the shift member 31 with respect to the clamp claw 12 held by the holding portion 28 of the one clamping portion 26. It moves relatively in the width direction of the piece 10, and the lock part 14 will also move as shown by the arrow in FIG.

  When the shift member 31 moves to the shift position, the position of the projection 35a of the top 35 of the lock mechanism 33 coincides with the through-hole 37 of the cylinder 30, and as shown in FIGS. The projection 35a is fitted into the through hole 37 by the urging force of. As a result, the shift member 31 is held at the shift position.

  In this state, when the grips on the handle portions 24 and 25 of the main bodies 20 and 21 of the tool 2 are weakened and separated from each other, an elastic return of the belt-shaped body constituting the annular piece 10 indicates an arrow in FIG. As described above, the clamp claws 12 and 13 held by the holding portions 28 and 29 of the both holding portions 26 and 27 are slightly separated from each other. At this time, since the shift member 31 is held at the shift position by the lock mechanism 33, the tip of the lock portion 14 is securely engaged with the engagement portion 16 as shown in FIGS. As a result, the expanded state of the annular piece 10 is maintained and the hose clamp 1 is released.

  When the hose clamp 1 is returned from the released state, the lock portion 14 is pressed toward the through hole 11 adjacent to the stopper portion 15 of the clamp claw 13 to bend the annular piece 10 and engage the tip of the lock portion 14. Remove from joint 16. As a result, the belt-shaped body constituting the annular piece 10 is elastically restored, the lock portion 14 passes through the through-hole 11 adjacent to the stopper portion 15 of the clamp claw 13, and both the clamp claws 12, 13 are separated from each other. 10 will be reduced in diameter.

  Thereafter, in preparation for the release of another hose clamp 1, the projection 35 a of the top 35 is pushed into the hole 34 against the biasing force of the spring 36 of the lock mechanism 33 of the tool 2. Then, the handle portions 24 and 25 are separated from each other, the holding portions 26 and 27 are moved away from each other, the push rod 32 is extracted from the opening 30 a of the cylinder 30, and the shift member 31 is accommodated in the cylinder 30.

  The tool of the present invention is not limited to the above-described embodiment. For example, the holding part and the push rod are attached to one of the sandwiching parts at the tip of existing pliers or pliers, and the cylinder is attached to the other. A shift member having a lock mechanism can be fitted into the cylinder.

  1: Hose clamp, 2: Tool, 10: Annular piece, 10a: One end, 10b: The other end, 12, Clamp claw: 13: Clamp claw, 14: Lock part, 16: Engagement part, 26: Clamping part 27: Holding part, 28: Holding part, 29: Holding part, 31: Shift member, 31a, 32a: Cam surface (shift mechanism), 33: Locking mechanism

Claims (1)

It is composed of an annular piece obtained by curving an elastic strip, clamp claws are provided at both ends of the annular piece, a lock portion is provided near one end of the annular piece, and a clamp claw at the other end of the annular piece is provided. An engagement portion that can be engaged with the lock portion is provided, and the annular piece expands against the elasticity of the band-shaped body by bringing the two clamp claws close to each other, and further, the lock portion is A hose clamp release tool configured to maintain a state in which the annular piece has expanded in diameter by being relatively moved in a width direction of a belt-like body and engaged with the engagement portion,
A pair of holding parts that are arranged so as to face each other and hold the clamp claws, respectively, and move the holding parts relatively close to and far from each other;
A shift member provided on one side of the clamping part, having the holding part, and supported on the other side of the clamping part so as to be movable in the width direction of the strip;
A push rod that is provided on the other of the clamping parts, and that moves the shift member to a shift position where the locking part engages with the engaging part by pressing the shift member when a pair of clamping parts approach each other; ,
A hose clamp release tool, comprising: a lock mechanism that holds the shift member in the shift position.

Images