JP5159905B2 - Hose clamp - Google Patents

Description

  The present invention relates to a hose clamp. Specifically, the correction means that can maintain the tightening force even when the hose diameter shrinks due to aging over a long period of time, prevents the deformation of the housing while preventing the plastic deformation during the tightening process. This relates to the provision of an improved hose clamp.

  Hose clamps are used for fluid and gas distribution in industrial fields, such as hoses used to distribute fluid and gas to automobile brakes, air conditioning systems, power steering or engine rooms. It is used to control the hose so that there is no separation phenomenon.

  Various types of such hose clamps have been used in the past, and the applicant of this application can correct this when there is a change in the diameter of the hose due to long-term use. We have developed a clamp with a correction function to prevent loss of fixing force (tightening force) and filed an application with the Korean Patent Office (2010-55553).

  A hose clamp 1 having a correction function to which the prior art is applied is provided with a clamp body 2 by circularly banding a plate member made of stainless steel having elasticity, and is fixed to one end of the clamp body 2. A clamping screw 4 is coupled to the clamping housing 3.

  The clamping screw 4 is coupled to a piercing hole 5 formed in the inner direction at the other end of the clamp body 2 so as to reduce the diameter, and the hose is tightened in the process of tightening the hose at the edge in the width direction of the clamp body 2. Damage prevention means 6 for preventing bite and damage is formed.

  The clamp body 2 is formed with a correction means 7 that can be tightened in a firm state by tightening the hose with elasticity as the shrinkage of the hose diameter when the hose diameter is reduced over a long period of use. When the hose is clamped and opened at the position where the piercing hole 5 ends, when the hose is aged, it is formed in a semicircular shape in the circumferential direction of the clamp body 2 so as to perform the correction function by the force to be restored. The correction beads 8 are configured.

  Further, for example, in Patent Document 1, a hose clamp that holds a hose is hooked to a flange of a side roof panel that reinforces a roof panel of an automobile, and a hook that is hooked to the flange. A hose clamp comprising: a stop portion; and an elastic body that presses the holding portion against the side roof panel when the holding portion and the hooking portion are connected and the hooking portion is hooked to the flange. Has been.

Japanese Patent Laid-Open No. 11-159663

  In the prior art as described above, the clamping housing cannot withstand the clamping force applied to the clamp body in the process of clamping the hose, and the clamp cannot be used because it is damaged or deformed. Is not only repelled from use in the field, but also becomes a cause of weak external competitiveness.

  In the fastening housing to which the prior art is applied, the plate-like member is bent into a form in which a fastening screw can be wrapped, and the connecting portion 11 is clamp body while the both ends (9, 10) of the fastening housing 3 are wrapped around the clamp body 2. 2 is located at the center of the bottom surface.

  The connecting parts of the tightening housings are connected in a corrugated form (zipper type, 12) or connected in a single-letter form, so that they can not withstand the tightening force despite the spot welding 13 being performed. There is a problem that it becomes impossible to tighten the hose in a stable state because the part is deformed or opened.

  This is because when the clamp body is clamped by the tightening screw, the generated tightening force is transmitted to the connecting part of the tightening housing and pressed down, so that the load is concentrated on the connecting part that is separated and has weakness. This is because they are easily deformed or damaged.

  Then, the correction function is performed by the semicircular ellipse correction beads on the clamp body. By the way, when the hose is clamped in the initial stage, when the correction beads are deformed (opened), aging of the hose occurs after the plastic beads are deformed until the correction beads cannot have elasticity. Even if it becomes a state without elasticity, it becomes a cause that cannot be tightened while tightening the hose.

  In other words, when there is no means to limit or correct the deformation of the correction bead beyond the elastic limit point when the hose is clamped, the user checks the state of the correction bead being deformed by visual observation only. Therefore, even if the correction bead opens from a semicircular shape in a flat state, it cannot be understood that plastic deformation has occurred.

  Also, in the initial stage when the hose is controlled, no major problem occurs, but even if a change occurs in which the diameter of the hose shrinks as the period of use of the hose increases, the correction bead is restored to its original state (semicircle shape) ) Does not generate a force to restore, causing a phenomenon that the clamping force is reduced, and a phenomenon of leakage of the fluid transferred through the hose occurs, making it difficult to stably supply the fluid.

  Furthermore, even if there is a fluid leakage phenomenon, the corrective bead has lost its function due to plastic deformation, so the normal function of preventing leakage by tightening the hose cannot be performed, and the durability and quality of the clamp are weak. Many problems have occurred.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a hose clamp capable of preventing damage and deformation of a tightening housing while ensuring a sufficient tightening force.

  In order to achieve the above object, a hose clamp according to the present invention comprises a clamp body comprising a plate member made of a stainless steel material having elasticity; a head mounted on a clamping housing fixed to one end of the clamp body; A clamping screw to be coupled; and a screw hole that is formed inwardly at the other end of the clamp body and coupled to the clamping screw; and a hose diameter that is formed integrally with the clamp body and is used for a long time. In a hose clamp including a correction bead that is formed so that it can be elastically tightened and tightened in a firm state when shrinking; the correction bead is plastically deformed and loses elasticity to its original state Further comprising means for preventing plastic deformation to prevent it from being restored; The plastic deformation prevention means includes a prevention body connected to the inner surface of the clamp body on which correction beads are formed; one end of the prevention body is fixed to the clamp body by a fixing means; and an opposite position fixed to the clamp body and the fixing means The prevention body is formed with stop pins as many as the correction beads formed on the clamp body; the stop pins are combined with the stop holes formed between the correction beads and the correction beads, and when the correction beads are tightened, It is characterized by restricting plastic deformation.

  In order to achieve the above object, the hose clamp of the present invention comprises a clamp body comprising a plate member made of stainless steel material having elasticity, and a clamping housing fixed to one end of the clamp body. A clamping screw having a head and coupled; a screw hole formed inwardly at the other end of the clamp body and coupled to the clamping screw; formed integrally with the clamp body and used for a long time In a hose clamp that includes a correction bead that is formed so that when the diameter is reduced, the hose is tightened and tightened in a firm state, the tightening force generated when the hose is clamped in the clamping housing Tightening to prevent deformation or damage by The fastening means includes a housing body that is bent so as to receive a fastening screw; and a portion that is fixed to the clamp body on the lower side of the housing body has a seamless fastening surface. The tightening surface is formed so that there is no deformation and damage corresponding to the tightening force; the tightening portion for binding the housing body is the center of the downward end portion that is bent downward on the upper side of the housing body A clamping protrusion formed so as to protrude outwardly; and a clamping hole formed in the center of an upward end portion bent upward at one end of the clamping surface; an end portion of the clamping protrusion exposed at the clamping hole Pressurize while bending upwards, in the space generated while cracking protrusions are formed The upper end portion of the tightening hole is pushed in, and the end portion is in close contact with the outside of the upper end portion so that the lower end portion and the upper end portion hold an integrated shape. .

  Further, in the hose clamp of the present invention, the stop hole is formed as a long hole so that when the clamp body tightens the hose, the correction bead can be opened without any problem.

  In the hose clamp of the present invention, the stop hole has a length equal to the distance that the first stop hole opens to the extent that the first correction bead is not plastically deformed; the second stop hole is the first stop hole. And the second correction bead is configured to have a length that is equal to the distance that opens to the extent that plastic deformation does not occur; the length that the correction bead that increases as the number of correction beads increases increases to the extent that plastic deformation does not occur The length of the stop hole can be determined by the length added by several times.

  Further, in the hose clamp according to the present invention, the tightening means is a clamping hole formed in the horizontal portion to be further formed before being bent downward on the upper side of the housing body; and an upward end bent upward at one end of the fastening surface A clamping protrusion formed at an end of the portion; and a clamping protrusion exposed in the clamping groove can be caulked.

  The hose clamp according to the present invention can prevent damage and deformation of the tightening housing while ensuring a sufficient tightening force.

It is the whole perspective view showing the clamp for hoses to which the technique of the present invention was applied. It is sectional drawing showing having cut | disconnected by the AA line of FIG. It is sectional drawing showing only the plastic deformation prevention means of the clamp for hose to which the technique of this invention was applied. It is an operation | movement state figure of the plastic deformation prevention means of the clamp for hoses to which the technique of this invention was applied. It is a perspective view showing the 1st example of the clamp housing for hoses to which the technique of the present invention was applied. It is sectional drawing showing having cut | disconnected by the BB line of FIG. It is a perspective view showing the 2nd example of the clamp housing for hoses to which the technique of the present invention was applied. It is sectional drawing showing having cut | disconnected by CC line of FIG. It is a block diagram showing the clamp for hose to which the prior art was applied.

  Hereinafter, preferred configurations and operations of the present invention for achieving the above object will be described with reference to the accompanying drawings.

  FIG. 1 is an overall perspective view showing a hose clamp to which the technology of the present invention is applied, FIG. 2 is a cross-sectional view showing that it is cut along the line AA in FIG. 1, and FIG. FIG. 4 is a sectional view showing only the plastic deformation preventing means of the applied hose clamp, FIG. 4 is an operation state diagram of the plastic deformation preventing means of the hose clamp to which the technique of the present invention is applied, and FIG. FIG. 6 is a perspective view showing a first example of a clamp housing for a hose applied, FIG. 6 is a cross-sectional view showing that the hose is cut along line BB in FIG. 5, and FIG. 7 is a hose to which the technique of the present invention is applied. FIG. 8 is a perspective view showing a second example of the clamp housing for use, and FIG. 8 is a cross-sectional view showing that it is cut along the line CC in FIG.

  A general hose clamp 100 has a clamp body 101 formed by bending a plate-like member made of stainless steel having elasticity and having a predetermined width into a circle. A clamp housing 102 is provided at one end of the clamp body 101. A clamping screw 104 having a head 103 for use of the tool is fixedly coupled to the inside.

  The tightening screw 104 is coupled to a screw hole 105 formed in a predetermined length inward at the other end of the clamp body 101, and the screw hole 105 is pulled or pushed by forward or reverse rotation of the tightening screw 104. Thus, the diameter of the clamp body 101 is enlarged or reduced.

  While facilitating the coupling of the hose 106 that clamps the diameter of the clamp body 101 forming the screw hole 105 to the maximum, the diameter of the clamp body 101 can be reduced so that the hose 106 can be tightened firmly and tightened. That is obvious.

  When the diameter of the hose 106 is reduced due to the use of the clamp body 101 for a long period of time, as the diameter of the hose 106 is reduced, the clamp body 101 has elasticity at a certain position so that it can be tightened in a firm state while being restored by elastic force. One or more semi-circular ellipsoidal correction beads 107 are formed.

  In the present invention, the correction bead 107 further includes a plastic deformation preventing means 110 so as to prevent the correction bead 107 from being plastically deformed and losing its elasticity so that it cannot be restored to its original state. When the hose 106 is tightened by improving 120, the hose 106 is prevented from being deformed or damaged by the generated tightening force.

  The plastic deformation prevention means 110 connects the prevention body 111 having a circular arc shape while being plate-shaped material to the inner surface of the clamp body 101 where the correction beads 107 are formed, and one end of the prevention body 111 (direction pulled by the tightening screw). Are fixed to the clamp body 101 by fixing means 112 such as fixing pins, rivets, welding or embossing formed integrally with the prevention body 111.

  The width of the prevention body 111 is preferably equal to the width of the clamp body 101, and the length is preferably longer than the length when the entire correction bead 107 formed on the clamp body 101 is opened so as not to be plastically deformed. .

  Stop pins (113, 114...) As many as the correction beads 107 formed on the clamp body 101 are formed on the prevention body 111 opposite to the clamp body 101 and the fixing means 112, and the stop pins are formed. (113, 114...) Are coupled to stop holes (115, 116...) Formed between the correction beads 107 and the correction beads 107.

  The stop holes (115, 116,...) Are formed as long holes so that the correction beads 107 can be opened when the clamp body 101 tightens the hose 106.

  The size of the stop hole (115, 116...) Is set such that the first stop hole 115 has a length equal to the distance that the first correction bead 107 is opened to a range where the first correction bead 107 is not plastically deformed. Is configured so that the first and second correction beads 107 have a length equal to the combined distance of the opening distances up to a range where plastic beads 107 are not plastically deformed.

  Of course, when the number of the correction beads 107 increases, the length of the stop hole (115, 116...) Is determined by the length added by the length of the correction beads 107 that increase to the extent that the correction beads 107 are not plastically deformed. Of course.

  The fastening means 120 for fixing the fastening housing 102 comprises a housing body 121 by bending a plate-shaped material, and the fastening surface 122 fixed to the clamp body 101 is configured in a seamless form so that the fastening force To prevent deformation and damage.

  The clamping portion 123 for binding the housing body 121 forms a clamping projection 125 that protrudes outward at the center of the downward end portion 124 that is bent from the upper side to the lower side of the housing body 121. A control hole 127 is formed in the center of the upward end portion 126 that bends upward.

  The end portion 128 of the cracking protrusion 125 exposed in the cracking hole 127 is bent upward and pressed, and the upper end 129 of the cracking hole 127 is pushed into the space S generated while the cracking protrusion 125 is formed. The end portion 128 is in close contact with the outer side of the upper end portion 129 so that the downward end portion 124 and the upward end portion 126 hold an integrated shape and correspond to the tightening force.

  The use state of the hose clamp 100 to which the technique of the present invention as described above is applied is as follows.

  The tightening screw 104 coupled to the tightening housing 102 constituting the hose clamp 100 is rotated in the releasing direction using a tool such as a screwdriver to expand the diameter of the clamp body 101 to accommodate the hose 106. After that, the hose 106 is tightened by rotating the tightening screw 104 in the tightening direction.

  In this process, the tightening screw 104 can be coupled with a screw hole 105 formed in the clamp body 101 to reduce or expand the diameter of the clamp body 101. When the hose 106 is tightened and tightened, the correction beads 107 formed in a semicircular shape on the clamp body 101 are elastic while being opened by a tightening force in a direction perpendicular to the axial center of the hose 106 (circumferential direction of the hose). The tightening force comes to be demonstrated.

  In this way, when the hose 106 is aged over a long period of time with the hose 106 firmly tightened and the diameter of the hose 106 decreases, the correction beads 107 formed on the clamp body 101 and the prevention body 111 are in the original state. A force to be restored is generated, and the diameter of the clamp body 101 is reduced by this force. Therefore, the correction function can be performed so as to hit the diameter of the hose 106 to be reduced.

  As described above, when the hose 106 is tightened, the correction bead 107 opens from a semicircular elephant to a flat shape. In this process, the correction bead 107 is completely opened by the plastic deformation preventing means 110 and plastic deformation occurs. It will be prevented that the original state cannot be restored.

  Specifically, stop pins (113, 114...) Formed on the inner surface of the correction bead 107 and the prevention body 111 fixed by the clamp body 101 and the fixing means 112 are formed between the correction beads 107. The stop pins (113, 114,...) Stop the correction beads 107 from being opened before the correction beads 107 are plastically deformed in combination with the formed stop holes (115, 116...). It becomes possible because it becomes.

  That is, when the clamp body 101 is pulled, the correction bead 107 is opened while being pulled, but when the correction bead 107 is opened, a stop hole (115, 116...) Formed outside (correction direction) of the correction bead 107. The stop pins (113, 114,...) Coupled to are moved from the A point to the B point of the stop holes (115, 116...).

  This is possible because the stop holes (115, 116...) Are formed as long holes, and the length of the stop holes (115, 116...) Is opened so that the correction beads 107 are not plastically deformed. When the stop pin (113, 114...) Is moved from point A to point B of the stop hole (115, 116...) Since the opening of the correction bead 107 is blocked (prevented), the correction bead 107 is prevented from being plastically deformed.

  In particular, when there are one or more correction beads 107, the first correction beads 107 can be operated in the order in which the correction beads 107 at the next position are opened after the first correction beads 107 are completely opened before the plastic deformation time point. The correction bead 107 can be opened at the same time.

  When there are a plurality of the correction beads 107, the length of the stop hole (115, 116,...) Is such that the correction beads 107 formed earlier are not plastically deformed as the fixing means 112 is further away from the base point. It is formed with a length equal to the total length that can be opened. In addition, the stop pins (113, 114,...) Have a form that increases in length sequentially, and the respective stop pins (113, 114,...) Can perform their roles.

  The tightening means 120 for fixing the tightening housing 102 forms a clamping portion 123 on any one side surface of the housing body 121, and a seam (joint) is connected to the tightening surface 122 that is tightly fixed to the clamp body 101. ) By eliminating the part, it is prevented from being damaged or deformed corresponding to the tightening force transmitted from the clamp body 101.

  In the case of the clamping portion 123, it is coupled to any one side surface of the housing body 121 by a clamping projection 125 and a clamping hole 127 so that the end portion of the clamping projection 125 is not detached by bending or caulking (caulking). In this way, it is possible to maintain a firm coupling state, and it is possible to prevent the clamping force from being easily damaged or deformed because the clamping force is not directly transmitted to the cracking portion 123.

  That is, if the clamp body 101 is tightened using the tightening screw 104, the upward end 126 constituting the tightening housing 102 generates a force to move downward (↓), and the downward end 124 is While the force to move in the upward direction (↑) is generated, the cracking portion 123 normally opens without being able to withstand.

  In the present invention, the end portion 128 of the cracking protrusion 125 exposed at the cracking home 127 formed on the upward end portion 126 is pressed while being bent upward, thereby cracking the space S generated while the cracking protrusion 125 is formed. The upper end portion 129 of the hole 127 is pushed in, the end portion 128 is brought into close contact with the outer side of the upper end portion 129, and the downward end portion 124 and the upward end portion 126 are hooked to each other while holding an integrated shape. It is possible to cope with the tightening force generated by the screw 104.

  In addition, there is no portion where the surface of the cracking portion 123 protrudes so as to coincide with the outer surface of the upward end portion 126, and the interference phenomenon with the surroundings is not lost, but the operator's body (hand) is damaged in the work process. It will not let you.

  As another example of the tightening means 120, before the housing body 121 is bent downward on the upper side, a clamping hole 131 is formed in the horizontal portion 130 to be further formed, and is bent upward at one end of the tightening surface 122. It may be configured such that after the clasp protrusion 132 is formed at the end of the opposite end portion 126 and coupled to each other, the clasp protrusion 132 is caulked so as not to be detached.

  In the process of tightening the hose by the hose clamp of the present invention as described above, the correction beads can be prevented from being plastically deformed, and the correction function can be smoothly performed when the hose ages by long-term use. It has an advantage that damage and deformation of the tightening housing can be prevented while securing a sufficient tightening force.

  The present invention improves the tightening housing that constitutes the clamp, prevents the phenomenon of being deformed or damaged by the tightening force, and preventing the correction bead from being plastically deformed to increase the tightening force of the hose. In addition to ensuring the basic purpose of the hose, when the hose ages, the correction function can be performed smoothly, and the hose is quickly controlled in a stable state by the restoring force of the correction beads. By preventing the fluid from leaking out, the present invention has various effects, such as the quality and durability of the clamp being advanced.

DESCRIPTION OF SYMBOLS 100 Clamp for hose 101 Clamp body 102 Clamping housing 103 Head 104 Clamping screw 105 Screw hole 106 Hose 107 Correction bead 110 Plastic deformation prevention means 111 Prevention body 112 Fixing means 113 Stop pin 114 Stop pin 115 Stop hole 116 Stop hole 120 Tightening means 121 Housing body 122 Clamping surface 123 Clamping portion 124 Downward end portion 125 Clamping projection 126 Upward end portion 127 Clamping hole 128 End portion 129 Upper end portion 130 Horizontal portion 131 Clamping hole 132 Clamping projection

Claims (5)

A clamp body comprising a plate member made of stainless steel having elasticity;
A clamping screw having a head coupled to a clamping housing fixed to one end of the clamp body;
A screw hole formed inwardly at the other end of the clamp body and coupled with a clamping screw;
Clamp for hose including a correction bead that is formed integrally with the clamp body so that when the hose diameter is reduced by long-term use, the hose is elastic enough to tighten and can be tightened in a firm state In;
Further comprising a plastic deformation preventing means for preventing the correction bead from being plastically deformed and losing its elasticity to be restored to its original state;
The plastic deformation preventing means includes a preventing body connected to the inner surface of the clamp body on which correction beads are formed;
One end of the prevention body is fixed to the clamp body by a fixing means;
The prevention body at the opposite position fixed to the clamp body and the fixing means is formed with stop pins as many as the correction beads formed on the clamp body;
The hose clamp, wherein the stop pin is coupled to a stop hole formed between the correction beads and the correction beads to restrict plastic deformation of the correction beads when tightened. A clamp body comprising a plate member made of stainless steel having elasticity;
A clamping screw having a head coupled to a clamping housing fixed to one end of the clamp body;
A screw hole formed inwardly at the other end of the clamp body and coupled with a clamping screw;
Clamp for hose including a correction bead that is formed integrally with the clamp body so that when the hose diameter is reduced by long-term use, the hose is elastic enough to tighten and can be tightened in a firm state In;
The tightening housing further includes a tightening means for preventing deformation or damage due to a tightening force generated when the hose is tightened;
The tightening means includes a housing body bent to accommodate a tightening screw;
The Tightening face that will be fixed to the clamp body below the housing body forms a surface fastening to avoid deformation and damage in response to tightening force constituted in the form seamless;
A clamping protrusion for binding the housing body is formed to project outward at the center of a downward end portion that is bent downward on the upper side of the housing body;
A clamping hole formed in the center of the upward end portion that is bent upward at one end of the fastening surface;
The end of the cracking protrusion exposed in the cracking hole is pressed while being bent upward, and the upper end of the cracking hole is pushed into the space generated while the cracking protrusion is formed,
The hose clamp, wherein the end portion is in close contact with the outer side of the upper end portion so that the downward end portion and the upward end portion hold an integrated shape. The hose clamp according to claim 1, wherein the stop hole is formed as a long hole so that when the clamp body tightens the hose, the correction bead can be opened. The size of the stop hole is such that the first stop hole has a length that is equal to the distance that the first correction bead opens to the extent that plastic deformation does not occur;
The second stop hole is configured to have a length equal to the combined distance of the first and second correction beads to the extent that they are not plastically deformed;
The length of the stop hole is determined by a length that is added to the number of lengths of the correction beads that increase as the number of the correction beads increases so that the correction beads are not plastically deformed. Hose clamp. A clamping hole formed in the horizontal portion to be further formed before the clamping means is bent downward on the upper side of the housing body;
A clamping protrusion formed at the end of the upward end portion that is bent upward at one end of the clamping surface;
The hose clamp according to claim 2, wherein the clamping protrusion exposed in the clamping groove is caulked.