JPH0673588U - Hose clamp - Google Patents

Abstract

(57) [Summary] [Purpose] The design flexibility of the clamp is high,
(EN) Provided is a hose clamp capable of reliably preventing loosening after tightening. [Structure] A band portion 11 and a clamp portion 12 are formed. A plurality of locking holes 13 are formed in the band portion 11 at predetermined intervals in the longitudinal direction. The clamp portion 12 includes a housing 14 and this housing. Band portion 11 pivotally supported by 14
Of the gear member 15 which is disposed in a direction orthogonal to the longitudinal direction and has a tightening portion 18 formed at one end thereof and which is rotatable, and the gear member 15 which is disposed in the housing 14 and biases the gear member 15 toward the tightening portion 18. A gear 20 that is provided with a spring 16 and that engages with each locking hole 13 of the band portion 11 at an intermediate position in the axial direction of the gear member 15 and that tightens the band portion 11 to the outer circumference of the hose by rotation of the gear member 15 is integrated. An engaging portion with which the gear 20 is fitted and the gear member 15 is non-rotatably engaged with the peripheral edge of the notch hole 23 formed in the housing 14 at the position where the gear member 15 penetrates. 24 is formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hose clamp for tightening and fixing hoses.

[0002]

[Prior art]

 A conventional worm-type hose clamp is composed of a band made of an elastic thin plate material and a clamp portion for tightening the band, but as in the conventional example shown in FIG. Since the screw 4 of the clamp portion 3 is arranged in a direction parallel to the longitudinal direction of the band 1, the working direction at the time of tightening is always the direction orthogonal to the longitudinal direction of the hose 5, which is a design factor of the clamp. There was a problem that the degree of freedom of layout of was reduced.

[0003]

[Problems to be solved by the device]

 Therefore, as disclosed in Japanese Utility Model Laid-Open No. 50-28319, Japanese Utility Model Laid-Open No. 50-33825, or Japanese Utility Model Laid-Open No. 58-146187, a screw or a fastening member for fastening the band is used. It has been proposed that the band is arranged in a direction orthogonal to the longitudinal direction of the band. However, although these conventional examples increase the degree of freedom in the layout of the clamp design, if vibration or the like is applied after tightening and fixing the band, the screw or the tightening member will move and the tightened state of the band will loosen. There was a problem. It is an object of the present invention to provide a hose clamp that solves the above conventional problems, has a high degree of freedom in the layout of the clamp design, and can reliably prevent loosening after tightening.

[0004]

[Means for Solving the Problems]

 To achieve the above object, a hose clamp according to the present invention comprises a band portion and a clamp portion, and the band portion has a plurality of locking holes formed at predetermined intervals in the longitudinal direction. The clamp portion is disposed in the housing, a rotatable gear member pivotally supported by the housing and disposed in a direction orthogonal to the longitudinal direction of the band portion, a tightening portion is formed at one end, and the rotatable gear member. And a spring for urging the gear member in the direction of the tightening portion, and engages with each locking hole of the band portion at an intermediate position in the axial direction of the gear member. A gear for fastening the band portion to the outer circumference of the hose is integrally formed, and the gear is fitted to the periphery of the notch hole formed in the housing at a position where the gear member penetrates, so that the gear member is An engaging portion that is non-rotatably engaged is formed, and when the band is tightened, the gear member is pressed against the biasing force of the spring to release the engagement between the gear and the engaging portion. The band portion is tightened in this state, and when the band is fixed, the gear and the engaging portion are engaged by the urging force of the spring to prevent the tightening state of the band portion from being loosened. And

It is desirable that the engaging portion at the peripheral edge of the notch hole is provided so as to project so as to mesh with a plurality of upper portions of the gear.

[0006]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. 1 to 6 show one embodiment of the present invention, in which 10 is a hose clamp according to this embodiment. The hose clamp 10 includes a band portion 11 and a clamp portion 12.

The band portion 11 is made of an elastic thin plate material, and as shown in FIG. 1, a plurality of elongated hole-like locking holes 13 are intermittently formed at predetermined intervals in the longitudinal direction. (A part of the locking hole 13 is omitted in FIG. 1 for convenience.)

The clamp portion 12 includes a housing 14, a gear member 15, and a spring 16. The gear member 15 has a substantially rod shape as shown in FIG. 3, and one end of the gear member 15 (on the right side in FIG. 1) is fitted with an appropriate tightening tool (not shown) so that the entire gear member 15 can be rotated. 18 is formed. A plurality of gears 20 are projected on the thick shaft portion 19 following the fastening portion 18 along the outer circumference of the shaft, and engage with the respective locking holes 13 of the band portion 11 to rotate the fastening portion 18. As a result, the band portion 11 can be tightened. Further, the thin shaft portion 21 following the thick shaft portion 19 has a scrap 22 formed near the tip thereof.

As shown in FIG. 4, the housing 14 has insertion holes 17 formed at both side edges of the lower portion so that the band portion 11 can be double-inserted. On the tightening portion 18 side of the gear member 15, a notch hole 23 is formed at a position where the gear member 15 penetrates, and a plurality of upper parts of the gear 20 are provided at the upper peripheral edge of the notch hole 23. A plurality of engaging portions 24 (three in this embodiment) are formed so as to be engaged with each other. Further, the housing 14 on the tip side of the thin shaft portion 21 is formed with a through hole 25 through which the thin shaft portion 21 is slidably slidable according to the axial method.

As shown in FIG. 1, in the gear member 15, the tip of the thin shaft portion 21 projects from the through hole 25, and the washer 26 is fitted into the scrap 22 so that the gear member 15 is From the position, it can slide to the left side in the figure, and it cannot move because it is blocked by the washer 26 on the right side in the figure. A spring 16 is fitted to the thin shaft portion 21 of the gear member 15, one end of the spring 16 is brought into contact with the housing 14, and the other end is a step portion between the thin shaft portion 21 and the thick shaft portion 15. Is disposed so as to abut.

Therefore, the gear member 15 is pivotally supported by the housing 14 and arranged in a direction orthogonal to the longitudinal direction of the band portion 11. That is, in the state before tightening work shown in FIG. 1, one end is pivotally supported by the through hole 25 of the housing 14, and the lower gear 20 is locked in the locking hole 13 of the band portion 11. However, since the gear member 15 is urged toward the tightening portion 18 by the urging force of the spring 16, the upper portion of the gear 20 is in a state of meshing with the engaging portion 24 formed on the upper peripheral edge of the notch hole 23. ing. Therefore, in the state shown in FIG. 1, since the upper portion of the gear 20 and the engaging portion 24 mesh with each other, the gear member 15 is in a non-rotatable state.

Next, a procedure for tightening the hose clamp 10 according to this embodiment will be described. First, in the state before the tightening work shown in FIGS. 1 and 2, a hose (not shown) is fitted and inserted into the annular band portion 11. Then, at the time of tightening the band, as shown in FIG. 5, a proper tightening tool is attached to the tightening portion 18 of the gear member 15, and the spring 16 is pressed in a direction against the biasing force of the spring 16 (left direction in the drawing). The gear member 15 moves against the biasing force, and the engagement state between the gear 20 and the engagement portion 24 is released. Therefore, in this disengaged state, if the gear member 15 is rotated in the tightening direction by the tightening tool, the gear 20 is sequentially engaged with each locking hole 13 and the band member 11 is moved to the tightened state. Go.

Then, when the pressing force applied to the tightening portion 18 by the tightening tool is released at the time of fixing the band where the hose is sufficiently tightened by the band member 11, as shown in FIG. Since the gear member 15 moves to the original method and the gear 20 and the engaging portion 24 engage again, the gear member 15 cannot rotate and the band member is fixed.

In the present embodiment configured as described above, first, the gear member 15 may be pivotally supported by the housing 14 and arranged in a direction orthogonal to the longitudinal direction of the band portion 11, and However, depending on the conditions, it is possible to arrange the gear member 15 in the direction parallel to the longitudinal direction of the band portion 11 as in the conventional case. The degree of freedom increases.

Further, when the hose is sufficiently tightened and the band is fixed, the gear 20 of the gear member 15 and the engaging portion 24 are engaged with each other, and the gear member 15 cannot rotate, so that the vibration etc. Even if the force is applied, it is possible to reliably prevent the gear member 15 from rotating and the tightened state of the band portion 11 from loosening.

In the above embodiment, the number of engaging portions that engage with the gear 20 is three, but the number of engaging portions is not limited to this, and the shape of the engaging portions is the same as the design shape of the gear. It goes without saying that various modifications can be made without departing from the scope of the present invention, such as appropriate modification.

[0017]

[Effect of device]

 The present invention is configured as described above and has the following effects. (1) Since the gear member of the clamp part can be arranged in the direction orthogonal to the longitudinal direction of the band part and can be used properly according to the design conditions, the degree of freedom in the layout of the clamp design can be increased. (2) When the band is fixed, the gear of the gear member engages with the engaging part, and the gear member cannot rotate.Therefore, the tightened state of the band part is not affected even if vibration is applied. It is possible to reliably prevent loosening.

[Brief description of drawings]

FIG. 1 is a side view of essential parts showing the configuration of a hose clamp according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a hose clamp according to this embodiment.

FIG. 3 is a side view of a gear member according to the present embodiment.

FIG. 4 is an explanatory diagram showing a configuration of a housing according to the present embodiment. .

FIG. 5 is an explanatory view showing a mode of tightening the band of the hose clamp.

FIG. 6 is an explanatory view showing a mode of fixing the band of the hose clamp.

FIG. 7 is an explanatory diagram showing a configuration of a conventional hose clamp.

[Explanation of symbols]

 10 Hose Clamp 11 Band Part 12 Clamping Part 13 Locking Hole 14 Housing 15 Gear Member 16 Spring 17 Insertion Hole 18 Tightening Part 19 Thick Shaft Part 20 Gear 21 Fine Shaft Part 23 Notch Hole 24 Engagement Part 25 Through Hole

Claims (2)

[Scope of utility model registration request] 1. A band part and a clamp part, wherein a plurality of locking holes are formed in the band part at predetermined intervals in the longitudinal direction, and the clamp part is provided on the housing and on the housing. A rotatable gear member that is supported and disposed in a direction orthogonal to the longitudinal direction of the band portion and has a tightening portion formed at one end, and a rotatable gear member that is disposed in the housing and that moves the gear member in the direction of the tightening portion. A gear that engages with each locking hole of the band portion and tightens the band portion to the outer periphery of the hose by the rotation of the gear member at an intermediate position in the axial direction of the gear member. An engaging portion is formed around the notch hole formed in the housing at a position where the gear member penetrates and the gear is fitted and the gear member is non-rotatably engaged. And tighten the band Is pressed against the biasing force of the spring, and the band portion is tightened in a state where the gear and the engaging portion are disengaged. A hose clamp, wherein a gear and the engaging portion are engaged with each other to prevent the tightened state of the band portion from being loosened. 2. The hose clamp according to claim 1, wherein the engaging portions on the peripheral edge of the notch hole are provided so as to engage with the plurality of upper portions of the gear, respectively.