Dual self-locking flexible connection clamp structure

Abstract

The application provides a double self-locking flexible connecting clamp structure, which comprises a clamping ring, a rivet, a spring hook, a pull rod and a pressing handle; when the left clamping ring and the right clamping ring are interlocked, the first left rivet is located in the upper bend, and the back side of the lower bend hooks the first left rivet, forming the first locking; the cross rod of the pull rod is clamped into the pull groove, forming the second locking; and the lower curved surface of the cross rod presses the lower part of the handle, so that the second locking plays a double locking role on the first locking. The double self-locking flexible connecting clamp structure provided by the application has two lockings, and the clamp will not be loose even if the working pressure increases; the clamp is convenient to operate, does not need to be fixed by using other tools, and can clamp the tubular member by relying on the structure itself.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flexible connection clamp for aircraft fuel system pipeline, in particular to a double self-locking flexible connection clamp structure. BACKGROUND

[0002] The flexible connection clamp is a light flexible connection component based on rubber sealing principle, which can be applied to fuel, ventilation and other systems, and has many characteristics such as large axial compensation, large angle compensation, stable lap joint resistance, simple operation, light weight and the like.

[0003] At present, most of the flexible connection clamps for aircraft fuel system pipeline at home adopt the claw structure for locking, and the working pressure is limited to the use range of 0.86 MPa. If the working pressure continues to increase, the claw locking structure is easy to collapse, damage and even loosen, which finally causes pipeline leakage and even system cannot work normally. SUMMARY

[0004] According to the technical problem, a double self-locking flexible connection clamp structure is provided.

[0005] The technical means adopted by the present application are as follows:

[0006] A double self-locking flexible connection clamp structure, comprising a left clamping ring, a right clamping ring, a first left rivet, a first right rivet, a spring hook, a pull rod and a pressing handle;

[0007] The left clamping ring and the right clamping ring are both semi-ring structures, and are integrated to form a complete ring; the end of the left clamping ring at the bottom is hinged to the end of the right clamping ring at the bottom; the end of the left clamping ring at the top and the end of the right clamping ring at the top are respectively hinged to the first left rivet and the first right rivet through the ear plates;

[0008] The pull rod comprises a horizontal rod and pull hooks arranged at both ends of the horizontal rod; the pull hooks are installed in the rear pin holes of the pressing handle and are rotationally connected with the pressing handle, the front pin hole of the pressing handle is sleeved outside the first right rivet and is rotationally connected with the first right rivet, and after the pull rod and the pressing handle are assembled, the pull rod is in a rectangular ring structure;

[0009] The spring hook is an integral structure, sequentially comprising a handle, a hook and a main body from left to right, the main body is inclined, the left end of the main body is higher than the right end, an arc-shaped groove is arranged on one side of the main body close to the right end of the main body, the arc-shaped groove is concave downward, a middle hole parallel to the arc-shaped groove is arranged in the arc-shaped groove, the middle hole is sleeved on the first right rivet and is connected with the first right rivet in rotation, and the first right rivet is located in the arc-shaped groove; the hook is S-shaped, the end of the upper bend of the hook is integrated with the left end of the main body, the end of the lower bend of the hook is integrated with the bottom of the handle, and the handle is a curved structure arranged obliquely, the left end of the handle is higher than the right end.

[0010] The left side bottom of the ear plate matched with the first left rivet is provided with a pulling groove.

[0011] When the left clamping ring and the right clamping ring are interlocked, the first left rivet is located in the upper bend, and the back side of the lower bend hooks the first left rivet, forming the first locking, the horizontal rod of the pull rod is clamped into the pulling groove, forming the second locking, and the horizontal rod presses the lower curved surface of the handle, so that the second locking plays a double locking effect on the first locking.

[0012] Preferably, the right end of the pressing handle has a handle.

[0013] Preferably, a plurality of first weight reduction holes are arranged on the left clamping ring and the right clamping ring, and a second weight reduction hole is arranged on the spring hook.

[0014] Preferably, the ear plate matched with the first left rivet is rectangular, the top of the ear plate has a quarter circle transition surface at two corners, the left side bottom of the ear plate has a right concave, and the concave forms the pulling groove.

[0015] Preferably, the end of the left clamping ring at the bottom is hinged with the end of the right clamping ring at the bottom through the second left rivet, the second right rivet and the hinge.

[0016] The second left rivet and the second right rivet are respectively hinged with the left clamping ring and the right clamping ring through the ear plate fixed on the bottom end of the left clamping ring and the ear plate fixed on the bottom end of the right clamping ring, and the hinge is respectively hinged with the second left rivet and the second right rivet.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] The double self-locking flexible connection clamp structure provided by the present application has two lockings, and the clamp will not loosen under the condition of increasing working pressure, and the clamp is convenient to operate and does not need to be fixed by using other tools, but can be clamped to the tubular member by relying on the structure itself.

[0019] Based on the above reasons, the present application can be widely popularized in the field of flexible clamps and the like. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Fig. 1 It is a schematic diagram of the upper part of the double self-locking flexible connection clamp structure of the present application.

[0022] Fig. 2 It is a schematic diagram of the lower part of the double self-locking flexible connection clamp structure of the present application.

[0023] Fig. 3 It is a schematic diagram when the present application is not locked.

[0024] Fig. 4 It is a schematic diagram of the spring hook structure of the present application.

[0025] Fig. 5 It is a schematic diagram when the present application is locked.

[0026] In the figure: 1, spring hook; 11, main body; 111, annular groove; 112, center hole; 12, hook; 121, lower elbow; 122, upper elbow; 13, handle; 14, second weight-reducing hole; 2, pull rod; 21, pull hook; 22, crossbar; 3, pressing handle; 31, front pin hole; 32, rear pin hole; 33, handle; 4, rivet; 41, first right rivet; 42, first left rivet; 43, second right rivet; 44, second left rivet; 5, collar; 51, right collar; 52, left collar; 53, ear plate; 54, first weight-reducing hole; 55, pull groove; 6, hinge. DETAILED DESCRIPTION

[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all embodiments of the present application. The following description of at least one example embodiment is merely illustrative in nature and is in no way limiting on the application or its applications or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0029] It should be noted that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It will be further understood that the terms "comprising", "including", and / or "having", when used herein, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof.

[0030] Unless specifically stated otherwise, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments are not meant to limit the scope of the present application. At the same time, it should be clear that the sizes of the various parts shown in the drawings are not drawn in proportion. The techniques, methods and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification when appropriate. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so that once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0031] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application: the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0032] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0033] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0034] like Figs. 1-5 As shown, a double self-locking flexible connection clamp structure includes a spring hook 1, a pull rod 2, a pressure handle 3, a rivet 4, a retaining ring 5, and a hinge 6 (as shown). Figs. 1-2 );

[0035] The retaining ring 5 is divided into a right retaining ring 51 and a left retaining ring 52;

[0036] The rivet 4 is divided into a first right rivet 41, a first left rivet 42, a second right rivet 43, and a second left rivet 44.

[0037] Both the left retaining ring 52 and the right retaining ring 51 are semi-circular structures, which are spliced ​​together to form a complete circular ring. The second left rivet 44 and the second right rivet 43 are respectively hinged to the left retaining ring 52 and the right retaining ring 51 through the ear plate 53 fixed to the bottom end of the left retaining ring 52 and the ear plate 53 fixed to the bottom end of the right retaining ring 51. The hinge 6 is respectively hinged to the second left rivet 44 and the second right rivet 43 to form a movable structure. The top end of the left retaining ring 52 and the top end of the right retaining ring 51 are respectively hinged to the first left rivet 42 and the first right rivet 41 through the ear plate 53. The left retaining ring 52 and the right retaining ring 51 are provided with a plurality of first weight-reducing holes 54. The ear plate 53 that cooperates with the first left rivet 41 is rectangular, and has a quarter-circle transition surface at the two corners of its top, and has a rightward recess at its left bottom, which forms a groove 55.

[0038] likeFig. 3 As shown, the pull rod 2 includes a crossbar 22 and hooks 21 disposed at both ends of the crossbar 22; the hooks 21 are installed in the rear pin hole 32 of the pressure handle 3 and are rotatably connected to the pressure handle 3; the front pin hole 31 of the pressure handle 3 is sleeved on the outside of the first right rivet 41 and is rotatably connected to the first right rivet 41; after the pull rod 2 and the pressure handle 3 are assembled, the pull rod 2 has a rectangular ring structure; the right end of the pressure handle 3 has a handle 33.

[0039] like Fig. 4 As shown, the spring hook 1 is an integral structure, comprising a handle 13, a hook 12, and a body 11 from left to right. The body 11 is inclined, with its left end higher than its right end. A downwardly recessed arc-shaped groove 111 is provided on the side of the body 11 near its right end, and a central hole 112 with its axis parallel to the arc-shaped groove 111 is arranged in the arc-shaped groove 111. The central hole 112 is fitted around the first right rivet 41 and rotatably connected to the first right rivet 41, and the first right rivet 41 is located in the arc-shaped groove 111. The hook 12 is S-shaped, with its upper bend 122 end integrated with the left end of the body 11, and its lower bend 121 end integrated with the bottom of the handle 13. The handle 13 is an inclined curved structure, with its left end higher than its right end. A second weight-reducing hole 14 is provided on the spring hook 1.

[0040] In use: Place the tubular component into the enclosure formed by the left retaining ring 52 and the right retaining ring 51. Push the left retaining ring 52 towards the right retaining ring 51. After the first left rivet 42 contacts the handle 13, it lifts the hook 12 along its curved surface. Continue pushing, and the first left rivet 42 passes the lower bend 121 and enters the upper bend 122. Under the action of elasticity, the hook 12 falls back to its original position. The first left rivet 42 is located in the upper bend 122, and the back side of the lower bend 121 hooks it, forming the first locking. Rotate the pull rod 2 to the left until the crossbar 22 falls into the pull groove 55. Press down the handle 33 to tighten the pull rod 2. At this time, the crossbar 22 is completely inserted into the pull groove 55, forming the second locking. At this time, the crossbar 22 presses down on the lower curved surface of the handle 13. The second locking has a double locking effect on the first locking (e.g., Fig. 5 (As shown).

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual self-locking flexible connection clamp structure, characterized by, Includes a left retaining ring, a right retaining ring, a first left rivet, a first right rivet, a spring hook, a pull rod, and a pressure handle; Both the left and right retaining rings are semi-circular structures, which are spliced ​​together to form a complete circular ring; the bottom end of the left retaining ring is hinged to the bottom end of the right retaining ring; the top ends of the left and right retaining rings are respectively hinged to the first left rivet and the first right rivet via ear plates. The pull rod includes a crossbar and hooks disposed at both ends of the crossbar; the hooks are installed in the rear pin hole of the pressure handle and are rotatably connected to the pressure handle; the front pin hole of the pressure handle is sleeved outside the first right rivet and is rotatably connected to the first right rivet; after the pull rod is assembled with the pressure handle, the pull rod has a rectangular ring structure. The spring hook is an integral structure, comprising a handle, a hook, and a main body from left to right. The main body is inclined, with its left end higher than its right end. A downwardly recessed arc-shaped groove is provided on the side of the main body near its right end, and a central hole with an axis parallel to the arc-shaped groove is arranged in the arc-shaped groove. The central hole is fitted around the first right rivet and rotatably connected to the first right rivet, and the first right rivet is located in the arc-shaped groove. The hook is S-shaped, with its upper bend end integrated with the left end of the main body, and its lower bend end integrated with the bottom of the handle. The handle is an inclined curved structure, with its left end higher than its right end. A groove is provided on the bottom left side of the ear plate that cooperates with the first left rivet; When the left retaining ring and the right retaining ring are interlocked, the first left rivet is located inside the upper bend, and the back side of the lower bend hooks it, forming the first locking. The crossbar of the pull rod is inserted into the pull groove to form the second locking. The crossbar presses down on the lower curved surface of the handle, so that the second locking plays a double locking role against the first locking.

2. A dual self-locking flexible connection clamp structure according to claim 1, wherein, The right end of the pressure handle has a handle.

3. The dual self-locking flexible connection clamp structure of claim 1, wherein, The left and right retaining rings are provided with multiple first weight-reducing holes, and the spring hook is provided with a second weight-reducing hole.

4. The dual self-locking flexible connection clamp structure of claim 1, wherein, The lug that engages with the first left rivet is rectangular and has a quarter-circle transition surface at its two top corners, and a rightward recess at its left bottom, which forms the pull groove.

5. The dual self-locking flexible connection clamp structure of claim 1, wherein, The bottom end of the left retaining ring and the bottom end of the right retaining ring are hinged together by a second left rivet, a second right rivet and a hinge. The second left rivet and the second right rivet are respectively hinged to the left retaining ring and the right retaining ring via ear plates fixed to the bottom end of the left retaining ring and the bottom end of the right retaining ring, respectively, and the hinges are respectively hinged to the second left rivet and the second right rivet.

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