Detachable self-locking clamp

Abstract

The detachable self-locking hoop comprises a hoop body wound into a ring shape, the hoop body comprises an inner end portion and an outer end portion, the outer end portion is arranged in a winding mode to form a first arc portion and a second arc portion, a buckling boss is arranged on the peripheral side of the hoop body, and when the hoop is buckled, the first arc portion is connected with the buckling boss in a clamped mode; the hoop body is further provided with a first reinforcing part, and the first reinforcing part is arranged between the buckling boss and the inner end part. The head part of the inner end part is provided with a guide part, the guide part extends in the winding direction of the hoop body and is gradually reduced, the hoop further comprises a second reinforcing part which is arranged in a concave or convex manner, the second reinforcing part corresponds to the first reinforcing part, and the second reinforcing part and the first reinforcing part are oppositely arranged on the two sides of the hoop body. According to the utility model, the inner end part of the clamping hoop is more smoothly buckled through the guide part, so that the assembly resistance is reduced; and through the second reinforcing part, the stress of the hose is more uniform when the hose is clamped, so that the risk of leakage caused by non-uniform stress of the hose is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of the hoop, specifically relates to a detachable self -locking hoop. BACKGROUND

[0002] As a kind of connecting pipeline tool, hoop is often used in the fixed connection between hose and hard tube, ensure the tightness and stability between them. But most of the existing hoop is locked by bolt, after long time use, there is the risk of plastic deformation, further lead to the fastening of the connection of the hoop decline, reduce the reliability of the hoop.

[0003] In prior art, such as the patent literature of announcement number CN204878146U, a clamping collar is disclosed, the undulating body of the clamping collar fully plays the function of providing elastic recovery capacity reserve without deformation, can reduce the risk of plastic deformation of clamping collar, improve the reliability of clamping collar. But the applicant found that when clamping, there is jam at A (see the drawing of specification for details Figure 1 ) of clamping collar, and there is the risk of leakage at B (see the drawing of specification for details Figure 1 ) of hoop in use. SUMMARY

[0004] For the problems in prior art, the utility model provides a detachable self -locking hoop, the inner end portion of the hoop is more smooth when buckling by guide portion, reduces assembly resistance, also by the second reinforcing portion, hose is more uniform in stress when clamping, reduces the risk of leakage caused by uneven stress of hose.

[0005] The utility model is realized as follows: a detachable self -locking hoop, including hoop body that is coiled into annular, the hoop body includes inner end portion arranged at inner side and outer end portion arranged at outer side, the outer end portion is arranged in meanders, forms first arc portion and second arc portion that are sequentially arranged along the extension direction of the hoop body, the hoop body side is equipped with the outer convex buckling boss, when hoop buckling, the first arc portion is connected with the buckling boss, so that the hoop can be easily removed and reused, first reinforcing portion is further equipped on the hoop body, the first reinforcing portion is arranged between the buckling boss and the inner end portion, when the hoop body buckling, the hose at the first reinforcing portion is clamped by two layers of hoop body, increase the clamping force, also increase the load of the hoop body, the first reinforcing portion improves the rigidity of the hoop body, reduces the probability of deformation of the hoop body due to load, improves the reliability of the hoop body.

[0006] The head of the inner end portion is provided with a guide portion which extends along the winding direction of the hoop body and gradually decreases, and when the hoop body is buckled, the head of the inner end portion slides into the inner side of the hoop body from the second arc portion, the guide portion guides the inner end portion, prevents the head of the inner end portion from being jammed with the second arc portion, and further makes the inner end portion more smooth when the clamp is buckled, and reduces the assembly resistance.

[0007] Further comprising a second reinforcing portion which is concave inward or convex outward, the second reinforcing portion corresponds to the first reinforcing portion and is oppositely arranged with the first reinforcing portion on both sides of the hoop body. The second reinforcing portion makes the stress of the hose more uniform when clamped, improves the concentricity between the hose and the hard pipe, and reduces the risk of hose leakage.

[0008] Preferably, the second reinforcing portion is a first reinforcing rib which is concave inward or convex outward, the first reinforcing rib has at least two and is arranged side by side, so that the first reinforcing rib reduces the depth of the inward concave or the height of the outward convex while ensuring the rigidity, and further makes the side wall of the hoop body in contact with the hose more gentle, so that the stress of the hose is more uniform, and further prevents the hose from leaking due to uneven stress.

[0009] As an equivalent alternative, the second reinforcing portion is a plurality of convex points which are arranged in an array and are concave inward or convex outward, and the plurality of convex points form at least two convex point bands which extend along the extension direction of the hoop body, and one end of the convex point band extends to the buckling boss. At least two convex point bands extending to the buckling boss make the convex points reduce the depth of the inward concave or the height of the outward convex while ensuring the rigidity, and further make the side wall of the hoop body in contact with the hose more gentle, so that the stress of the hose is more uniform, and further prevents the hose from leaking due to uneven stress.

[0010] Specifically, the convex points are formed by arc surfaces which are concave inward or convex outward, and the projection shape of the arc surfaces is circular or elliptical, so as to eliminate the edges and corners of the convex points, prevent the convex points from damaging the hose, and improve the reliability of the convex points.

[0011] Preferably, the guide portion is formed as a chamfer or a round corner of the inner end portion, so that the guide portion not only guides the head of the inner end portion, but also eliminates the edges of the inner end portion, prevents the edges of the inner end portion from scratching the hose when the clamp is clamped, and further improves the reliability of the clamp.

[0012] Preferably, when the first arc portion is buckled with the buckling boss, the line between the center point of the first reinforcing portion and the center point of the second reinforcing portion is l, and l passes through the center point of the hoop body, so that the positions of the first reinforcing portion and the second reinforcing portion are simultaneously symmetrical about the center of the hoop body and face symmetrical, and further improves the concentricity of the hose and the hard pipe after being clamped by the clamp.

[0013] Preferably, a third reinforcing portion is further arranged between the outer end portion and the second reinforcing portion, and a projection of the third reinforcing portion on the hoop cross section overlaps with a projection of the first reinforcing portion on the hoop cross section when the clamp is buckled. The third reinforcing portion further improves the rigidity of the hoop body, prevents the hoop body from deforming after long-term use, and improves the service life of the hoop body.

[0014] Specifically, the first reinforcing portion and the third reinforcing portion are arranged alternately to prevent the first reinforcing portion and the third reinforcing portion from pressing against each other, thereby preventing the first reinforcing portion from further extruding the hose and making the stress on the hose more uniform, and reducing the risk of hose leakage.

[0015] Preferably, a fourth reinforcing portion corresponding to the first reinforcing portion is further arranged on the outer end portion. The fourth reinforcing portion is used to improve the rigidity of the outer end portion. Since the outer end portion arranged in a meandering manner is always subjected to tension after the clamp is buckled, the fourth reinforcing portion improves the rigidity of the outer end portion, prevents the outer end portion from becoming flat under the action of tension, improves the reliability of the outer end portion, and further improves the service life of the clamp.

[0016] Preferably, the buckling boss is arranged in an inclined manner away from the outer end portion, and the inclination angle is 60°-85°. After the first arc portion is buckled with the buckling boss, the first arc portion is subjected to continuous tension, and there is a risk of disengagement from the buckling boss after long-term use. The inclined buckling boss enables the first arc portion to be self-locked after being buckled with the buckling boss, prevents the first arc portion from disengaging from the buckling boss after long-term use, and improves the reliability of the clamp.

[0017] The utility model discloses the beneficial effect of:

[0018] The utility model discloses a detachable self-locking clamp, which is guided by the guide portion on the inner end portion to prevent the head of the inner end portion from being jammed with the second arc portion when the clamp is buckled, thereby making the inner end portion more smooth when the clamp is buckled and reducing the assembly resistance. On the other hand, the second reinforcing portion makes the hose more uniform in stress when clamped, improves the concentricity between the hose and the hard pipe, and reduces the risk of hose leakage. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the existing clamp;

[0020] Figure 2 It is a schematic diagram of the overall clamp of the utility model;

[0021] Figure 3 It is Figure 2 the enlarged schematic diagram of a of the clamp;

[0022] Figure 4 This is a schematic diagram of another embodiment of the clamp of this utility model.

[0023] Figure label:

[0024] 1. Hoop body; 11. Outer end; 12. Inner end; 13. First reinforcing part; 14. Snapping boss; 15. Second reinforcing part; 16. Third reinforcing part; 111. First arc part; 112. Second arc part; 113. Fourth reinforcing part; 121. Guide part. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] like Figures 2-3 As shown, a detachable self-locking clamp includes a clamp body 1 wound into a ring shape. The clamp body 1 includes an inner end portion 12 on the inner side and an outer end portion 11 on the outer side. The outer end portion 11 is meandering, forming a first arc portion 111 and a second arc portion 112 arranged sequentially along the extension direction of the clamp body 1. The clamp body 1 has an outwardly protruding fastening boss 14 on its periphery. When the clamp is fastened, the first arc portion 111 engages with the fastening boss 14, allowing the clamp to be easily removed and reused. The clamp body 1 also has a first reinforcing part 13, which is located between the fastening boss 14 and the inner end portion 12. When the clamp body 1 is fastened, the hose at the first reinforcing part 13 is clamped by the two layers of clamp body 1, increasing the clamping force and the load on the clamp body 1. The first reinforcing part 13 improves the rigidity of the clamp body 1, reduces the probability of the clamp body 1 deforming under load, and improves the reliability of the clamp body 1.

[0028] In this embodiment, the engaging boss 14 is inclined away from the outer end portion 11 at an angle of 80°. After the first arc portion 111 engages with the engaging boss 14, it will be subjected to continuous tension, which may lead to disengagement from the engaging boss 14 after long-term use. The inclined engaging boss 14 enables the first arc portion 111 to self-lock after engagement, preventing it from disengaging from the engaging boss 14 after long-term use and improving the reliability of the clamp.

[0029] In this embodiment, the outer end portion 11 is further provided with a fourth reinforcing portion 113 adapted to the first reinforcing portion 13. The fourth reinforcing portion 113 is used to improve the rigidity of the outer end portion 11. Since the meandering outer end portion 11 will be under tension after the clamp is fastened, the fourth reinforcing portion 113 improves the rigidity of the outer end portion 11, which can prevent the outer end portion 11 from becoming flat under the action of tension, improve the reliability of the outer end portion 11, and thus improve the service life of the clamp.

[0030] The head of the inner end portion 12 is provided with a guide portion 121. The guide portion 121 extends along the winding direction of the hoop 1 and gradually decreases in size. When the hoop 1 is fastened, the head of the inner end portion 12 slides into the inner side of the hoop 1 from the second arc portion 112. The guide portion 121 guides the inner end portion 12 to prevent the head of the inner end portion 12 from getting stuck with the second arc portion 112, thereby making the inner end portion 12 more smoothly fastened when the hoop is fastened and reducing assembly resistance.

[0031] In this embodiment, the guide portion 121 is formed as the rounded corner of the inner end portion 12, so that the guide portion 121 can not only guide the head of the inner end portion 12, but also eliminate the sharp edges of the inner end portion 12, preventing the sharp edges of the inner end portion 12 from scratching the hose when the clamp is tightened, thereby further improving the reliability of the clamp.

[0032] It also includes a second reinforcing part 15 that protrudes outward, corresponding to the first reinforcing part 13 and disposed opposite to the first reinforcing part 13 on both sides of the clamp 1. The second reinforcing part 15 makes the hose more evenly stressed when clamped, improves the concentricity between the hose and the rigid pipe, and reduces the risk of hose leakage.

[0033] In other embodiments, the second reinforcing portion 15 may be recessed.

[0034] In this embodiment, when the first arc portion 111 is engaged with the fastening boss 14, the line connecting the center point of the first reinforcing portion 13 and the center point of the second reinforcing portion 15 is l. l passes through the center point of the hoop 1, so that the positions of the first reinforcing portion 13 and the second reinforcing portion 15 are simultaneously symmetrical about the center of the hoop 1 and face-symmetrical, which further improves the concentricity of the hose and the rigid pipe after they are clamped.

[0035] In this embodiment, the second reinforcing part 15 is an outwardly protruding first reinforcing rib. There are two first reinforcing ribs arranged side by side, so that while ensuring the rigidity of the first reinforcing rib, the height of the first reinforcing rib or the outward protrusion is reduced, thereby making the side wall of the hoop 1 in contact with the hose more gentle, making the hose more uniformly stressed, and further preventing leakage caused by uneven stress on the hose.

[0036] In this embodiment, a third reinforcing part 16 is further provided between the outer end portion 11 and the second reinforcing part 15. When the clamp is fastened, the projection of the third reinforcing part 16 on the cross-section of the clamp body 1 overlaps with the projection of the first reinforcing part 13 on the cross-section of the clamp body 1. The third reinforcing part 16 further improves the rigidity of the clamp body 1, prevents the clamp body 1 from deforming after long-term use, and improves the service life of the clamp body 1.

[0037] Specifically, the first reinforcing part 13 and the third reinforcing part 16 are alternately arranged to prevent the first reinforcing part 13 and the third reinforcing part 16 from pressing against each other, thereby preventing the first reinforcing part 13 from further squeezing the hose, making the force on the hose more uniform, and reducing the risk of hose leakage.

[0038] Example 2

[0039] like Figure 4 As shown, this is one embodiment of the present invention. The main technical solution of this embodiment is the same as that of Embodiment 1. Features not explained in this embodiment are explained in Embodiment 1 and will not be repeated here. The difference between this embodiment and Embodiment 1 is:

[0040] In this embodiment, the second reinforcing part 15 consists of a plurality of concave protrusions arranged in an array. These protrusions form two protrusion bands extending along the extension direction of the hoop 1, with one end of each band extending to the fastening boss 14. The presence of at least two protrusion bands extending to the fastening boss 14 ensures rigidity while reducing the depth of the concave protrusions or the height of the convex protrusions. This makes the sidewall of the hoop 1 in contact with the hose more gradual, resulting in more uniform stress on the hose and further preventing leakage due to uneven stress.

[0041] In other embodiments, the protrusion may be outwardly convex.

[0042] Specifically, the protrusion is formed by a concave arc surface, and the projected shape of the arc surface is circular, so as to eliminate the edges and corners of the protrusion, prevent the protrusion from damaging the hose, and improve the reliability of the protrusion.

[0043] According to the disclosure and teaching of the above description, the skilled in the art of the present application can also change and modify the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A detachable self-locking clamp, comprising a clamp body wound into a ring shape, the clamp body comprising an inner end portion provided on an inner side and an outer end portion provided on an outer side, the outer end portion being arranged in a meandering manner to form a first arc portion and a second arc portion arranged in sequence along an extension direction of the clamp body, an outwardly protruding buckling boss being provided on a circumferential side of the clamp body, the first arc portion being in clamped connection with the buckling boss when the clamp is buckled; a first reinforcing portion being further provided on the clamp body, the first reinforcing portion being provided between the buckling boss and the inner end portion; characterized in that, The head of the inner end is provided with a guide portion which extends along the winding direction of the hoop body and gradually decreases, and further comprises a second reinforcing portion which is concave or convex and is arranged on both sides of the hoop body corresponding to the first reinforcing portion.

2. A detachable self-locking clamp according to claim 1, characterized in that, The second reinforcing portion is a first reinforcing rib which is concave or convex, and the first reinforcing rib has at least two and is arranged side by side.

3. A detachable self-locking clamp according to claim 1, wherein The second reinforcing portion is a plurality of convex points which are arranged in an array and are concave or convex, and the plurality of convex points form at least two convex point bands which extend along the extension direction of the hoop body, and one end of the convex point band extends to the buckling boss.

4. A detachable self-locking clamp according to claim 3, wherein The convex point is formed by a concave or convex arc surface, and the projection shape of the arc surface is circular or elliptical.

5. A detachable self-locking clamp according to any one of claims 1-4, characterized in that, The guide portion is formed as a chamfer or a round corner of the inner end.

6. A detachable self-locking clamp according to any one of claims 1-4, characterized in that, When the first arc portion is buckled with the buckling boss, the line between the center point of the first reinforcing portion and the center point of the second reinforcing portion is l, and l passes through the center point of the hoop body.

7. A detachable self-locking clamp according to any one of claims 1-4, characterized in that, The outer end and the second reinforcing portion are further provided with a third reinforcing portion, and when the clamp is buckled, the projection of the third reinforcing portion on the cross section of the hoop body overlaps the projection of the first reinforcing portion on the cross section of the hoop body.

8. A detachable self-locking clamp according to claim 7, characterized in that The first reinforcing portion and the third reinforcing portion are arranged alternately.

9. A detachable self-locking clamp according to any one of claims 1-4, characterized in that, The outer end is further provided with a fourth reinforcing portion which is adapted to the first reinforcing portion.

10. A detachable self-locking clamp according to any one of claims 1-4, characterized in that, The buckling boss is arranged obliquely away from the outer end, and the oblique angle is 60°-85°.

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