CN211882542U

CN211882542U - Self-locking elastic fastening device

Info

Publication number: CN211882542U
Application number: CN202020077841.3U
Authority: CN
Inventors: 余洪
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-11-10
Anticipated expiration: 2030-01-15

Abstract

The utility model provides a self-locking elastic buckle device, which comprises a cord, a shell, a female buckle and a male buckle; a first bulge is arranged on the inner side of the left side plate and the inner side of the right side plate at the front end of the shell; a second bulge is arranged on the inner sides of the left side plate and the right side plate at the rear end of the shell; the front side surface of the female buckle and the front end opening of the shell are positioned on the same side; the left side and the right side of the female buckle are provided with a first sliding groove which clamps the first bulge in the female buckle and can slide back and forth along the first bulge; a groove is arranged in the middle of the top of the female buckle; two stringing holes I which are respectively arranged at two sides of the groove and penetrate through the front end and the rear end of the female buckle are arranged between the groove and the first sliding chute; the male buckle is arranged in the front end of the shell and can slide in the shell; the rear end of the female buckle is provided with a U-shaped notch which is respectively communicated with the groove and the first rope threading hole; a pair of elastic pressing sheets which are respectively arranged at two sides of the groove and are positioned between the groove and the first rope threading hole are arranged in the U-shaped notch; the male buckle is arranged in the rear end of the shell and can slide in the shell; the male buckle is composed of a guide strip, a pressing plate and a trapezoidal block. The utility model is simple in operation, convenient assembling presss from both sides tightly effectually.

Description

Self-locking elastic fastening device

Technical Field

The utility model belongs to the technical field of the cable loop, concretely relates to auto-lock elasticity spiral-lock device.

Background

The elastic buckle is also called a rope buckle, and is a small device for clamping a rope, a plurality of rope buckles are frequently used on articles such as ready-made clothes, backpacks, bags, tents, shoes and the like, the existing rope buckle mainly takes a spring buckle as a main part, namely the rope is clamped by matching a spring and a clamping block, the elasticity of the spring is reduced along with the use times, so the existing rope buckle generally has the condition of looseness when the use times reach a certain time, the service life is generally short, in addition, the spring determines the clamping force of the rope buckle on the rope, when the spring is too tight, a user needs larger force to control the clamping block, and the rope cannot be effectively clamped by the clamping block due to too loose spring.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, an object of the present invention is to provide a self-locking elastic fastener device with simple structure, convenient operation and good clamping effect. The specific technical scheme is as follows:

a self-locking elastic buckle device comprises a thread rope, a shell, a female buckle and a male buckle;

the inner sides of the left and right side plates at the front end of the shell are provided with a first bulge close to the opening at the front end of the shell; a second bulge is arranged on the inner side of the left side plate and the inner side of the right side plate at the rear end of the shell, which are close to the opening at the rear end of the shell;

the female buckle is arranged in the front end of the shell and can slide in the shell, and the front side surface of the female buckle and the front end opening of the shell are positioned on the same side; the left side and the right side of the female buckle are provided with a first sliding groove which clamps the first bulge in the female buckle and can slide back and forth along the first bulge; a groove parallel to the left side surface and the right side surface of the shell is arranged in the middle of the top of the female buckle; two first rope threading holes which are respectively arranged at two sides of the groove and penetrate through the front end and the rear end of the female buckle are arranged between the groove and the first sliding grooves at two side surfaces of the female buckle; the rear end of the female buckle is provided with a U-shaped notch which is respectively communicated with the groove and the first rope threading hole; a pair of elastic pressing sheets which are respectively arranged at two sides of the groove and are positioned between the groove and the first rope threading hole are arranged in the U-shaped notch;

the male buckle is arranged in the rear end of the shell and can slide in the shell, and the rear side surface of the male buckle and the rear end opening of the shell are positioned on the same side; the male buckle consists of a guide strip, a pressing plate and a trapezoidal block; the guide strip is a long strip-shaped plate which is arranged at the front end of the male buckle and clamped in the groove, and the guide strip can move back and forth between the two elastic pressing sheets along the groove; the pressing plate is a square plate arranged at the rear end of the male buckle, two sides of the pressing plate are provided with a second sliding groove which clamps the second bulge in the pressing plate and enables the second bulge to slide back and forth in the second sliding groove, and a pair of second rope threading holes are formed in the pressing plate corresponding to the first rope threading holes; the trapezoidal block is a trapezoidal plate body which is arranged between the guide strip and the pressure plate and has a narrow front end and a wide rear end; the front end of the trapezoidal block is integrally connected with the guide strip, and the rear end of the trapezoidal block is integrally arranged in the middle of the front side surface of the pressing plate and positioned between the two rope penetrating holes II; the trapezoidal block can move forwards between the two elastic pressing pieces along with the guide strip and extrude and deflect the two elastic pressing pieces towards two sides; in a natural state, the front end of the trapezoidal block is just positioned at the rear ends of the two elastic pressing sheets, meanwhile, the part of the rear end of the pressing sheet positioned at the rear side of the second sliding chute is positioned outside the shell, and the second bulge is positioned at the front end inside the second sliding chute;

two thread ends of the thread rope respectively penetrate through the two first threading holes, then pass through the area between the elastic pressing sheet and the side plate of the U-shaped notch, finally penetrate through the two second threading holes respectively, and then extend out of the rear side face of the male buckle; when the male buckle slides forwards under the action of external force, the guide strip moves forwards along the groove, and meanwhile, the trapezoidal block moves forwards and gradually extrudes the elastic pressing piece to deflect the pressing rope towards two sides.

Furthermore, the left side and the right side of the front end of the shell are respectively provided with a first strip-shaped hole, and a first clamping plate is arranged in each first strip-shaped hole; the tail end of the first clamping plate is integrally arranged in the middle of the side face of the shell; the first bulge is arranged on the inner side face of one end of the clamping plate; a second strip-shaped hole is formed in each of the left side and the right side of the rear end of the shell, and a second clamping plate is arranged in each strip-shaped hole; the tail end of the second clamping plate is integrally arranged in the middle of the side face of the shell; the second protrusions are arranged on the inner side surfaces of the two ends of the clamping plate; the first end of the clamping plate and the second end of the clamping plate can deflect outwards under the action of external force and can automatically reset after no external force is applied.

Furthermore, the front side surface of the first protrusion and the rear side surface of the second protrusion incline towards the inside of the shell.

Furthermore, the outer side of the rear end of the elastic pressing sheet is provided with anti-skid grains.

Furthermore, an extrusion head is arranged at the rear end of each elastic pressing sheet.

Furthermore, the length of the elastic pressing sheet and the length of the extrusion head are smaller than the lengths of the left side plate and the right side plate of the U-shaped notch.

Further, the outer side of the extrusion head protrudes outwards to form a triangle.

Furthermore, the outer side of the extrusion head is provided with anti-skid grains.

The utility model has simple operation, and can be realized by grasping the shell to slide back and forth when tightening or loosening; the assembly is convenient, the cord is threaded well during the assembly, and the female buckle and the male buckle are clamped into the shell to complete the assembly; the clamping effect is good, when external force acts on the rear end of the male buckle, the male buckle slides forwards to extrude the extrusion head, so that the extrusion head deflects towards the cord to clamp the cord, and the larger the external force acting on the male buckle is, the larger the clamping force of the extrusion head on the cord is.

Drawings

Fig. 1 is a schematic structural view of a self-locking elastic fastener device of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the self-locking elastic fastening device of FIG. 2 without a thread rope

FIG. 4 is a schematic structural view of a housing of the self-locking elastic fastening device of the present invention;

FIG. 5 is a schematic structural view of a female buckle of the self-locking elastic buckle device of the present invention;

fig. 6 is a schematic structural view of a male buckle in the self-locking elastic buckle device of the present invention;

FIG. 7 is an assembled view of FIG. 1;

FIG. 8 is a state diagram of the self-locking elastic fastening device in the process of tightening;

FIG. 9 is a self-locking state diagram of the self-locking elastic fastener device of the present invention;

FIG. 10 is a state diagram of the self-locking elastic fastener device of the present invention during the releasing process;

shown in the figure: the rope comprises a 1-rope, a 2-shell, a 21-strip-shaped hole I, a 22-protrusion I, a 23-clamp plate I, a 24-clamp plate II, a 25-protrusion II, a 26-strip-shaped hole II, a 3-female buckle, a 31-groove, a 32-rope-threading hole I, a 33-chute I, a 34-U-shaped notch, a 35-elastic pressing sheet, a 36-extrusion head, a 4-male buckle, a 41-pressing plate, a 42-chute II, a 43-trapezoidal block, a 44-guide strip and a 45-rope-threading hole II.

Detailed Description

The principles and features of the present invention will be described in further detail below with reference to the accompanying drawings, wherein the examples are provided for illustration of the invention and are not intended to limit the scope of the invention.

As shown in fig. 1-7, the self-locking elastic buckle device of the present invention comprises a cord 1, a housing 2, a female buckle 3, and a male buckle 4;

the shell 2 is a square box body with openings at two ends, and a first bulge 22 is arranged on the inner side of the left and right side plates at the front end of the shell 2 and close to the opening at the front end of the shell 2; a second bulge 25 is arranged on the inner side of the left and right side plates at the rear end of the shell 2 close to the opening at the rear end of the shell 2;

the female buckle 3 is arranged in the front end of the shell 2 and can slide in the shell 2, and the front side surface of the female buckle 3 and the front end opening of the shell 2 are positioned on the same side; the left side and the right side of the female buckle 3 are provided with a first sliding groove 33 which is used for clamping the first bulge 22 in the female buckle and can slide back and forth along the first bulge 22; a groove 31 parallel to the left side surface and the right side surface of the shell 2 is arranged in the middle of the top of the female buckle 3; two stringing holes 32 which are respectively arranged at two sides of the groove 31 and penetrate through the front end and the rear end of the female buckle 3 are arranged between the groove 31 and the first sliding chutes 33 at two side surfaces of the female buckle 3; the rear end of the female buckle 3 is provided with a U-shaped notch 34 which is respectively communicated with the groove 31 and the first rope threading hole 32; a pair of elastic pressing sheets 35 which are respectively arranged at two sides of the groove 31 and are positioned between the groove 31 and the first rope threading hole 32 are arranged in the U-shaped notch 34;

the male buckle 4 is arranged in the rear end of the shell 2 and can slide in the shell 2, and the rear side surface of the male buckle 4 and the rear end opening of the shell 2 are positioned on the same side; the male buckle 4 is composed of a guide strip 44, a pressure plate 41 and a trapezoidal block 43; the guide strip 44 is a long strip-shaped plate which is arranged at the front end of the male buckle 4 and clamped in the groove 31, and the guide strip 44 can move back and forth between the two elastic pressing sheets 35 along the groove 31; the pressing plate 41 is a square plate arranged at the rear end of the male buckle 4, two sliding grooves 42 which are used for clamping the second bulges 25 in the pressing plate 41 and enabling the second bulges 25 to slide back and forth in the sliding grooves are arranged on two sides of the pressing plate 41, and a pair of rope penetrating holes 45 are arranged on the pressing plate 41 corresponding to the first rope penetrating holes 32; the trapezoidal block 43 is a trapezoidal plate body which is arranged between the guide strip 44 and the pressure plate 41 and has a narrow front end and a wide rear end; the front end of the trapezoidal block 43 is integrally connected with the guide strip 44, and the rear end of the trapezoidal block is integrally arranged in the middle of the front side surface of the pressure plate 41 and positioned between the two rope penetrating holes II 45; the trapezoidal block 43 can move forward between the two elastic pressing pieces 35 along with the guide bar 44 and press and deflect the two elastic pressing pieces 35 towards two sides; in a natural state, the front end of the trapezoidal block 43 is just positioned at the rear ends of the two elastic pressing sheets 35, meanwhile, the part of the rear end of the pressing plate 41, which is positioned at the rear side of the second sliding groove 42, is positioned outside the shell 2, and the second bulge 25 is positioned at the front end inside the second sliding groove 42 and reserves a forward moving stroke for the male buckle 4;

two line ends of the thread rope 1 respectively penetrate through the two first threading holes 32, then pass through an area between the elastic pressing sheet 35 and a side plate (a left side plate or a right side plate at the rear end of the male buckle 4) of the U-shaped notch 34, finally penetrate through the two second threading holes 45 and then extend out of the rear side face of the male buckle 4; when the male buckle 4 slides forward by an external force, the guide strip 44 moves forward along the groove 31 while the trapezoidal blocks 43 move forward and gradually press the elastic pressing piece 35 to deflect the pressing cord 1 to both sides.

Furthermore, the left side and the right side of the front end of the shell 2 are respectively provided with a strip-shaped hole I32, and a clamping plate I23 is arranged in each strip-shaped hole I32; the tail end of the first clamping plate 23 is integrally arranged in the middle of the side face of the shell 2; the first bulge 22 is arranged on the inner side face of the head end of the first clamping plate 23; a second strip-shaped hole 26 is formed in each of the left side and the right side of the rear end of the shell 2, and a second clamping plate 24 is arranged in each second strip-shaped hole 26; the tail end of the second clamping plate 24 is integrally arranged in the middle of the side face of the shell 2; the second projection 25 is arranged on the inner side face of the head end of the second clamping plate 24; the head end of the first clamping plate 23 and the head end of the second clamping plate 24 can deflect outwards the shell 2 under the action of external force and automatically reset after no external force is applied.

Further, the front side of the first projection 22 and the rear side of the second projection 25 are inclined toward the inside of the housing 2.

Furthermore, the outer side of the rear end of the elastic pressing piece 35 is provided with anti-slip lines.

Further, a pressing head 36 is provided at the rear end of each of the elastic pressing pieces 35.

Further, the length of the elastic pressing piece 35 plus the length of the extrusion head 36 is less than the length of the left and right side plates of the U-shaped notch 34.

Further, the outer side of the extrusion head 36 is convex outward in a triangular shape.

Furthermore, the outside of the extrusion head 36 is provided with anti-slip threads.

When the self-locking elastic buckle device of the utility model is assembled, firstly two line heads of the cord 1 respectively pass through two rope-passing holes one 32 of the female buckle 3, then pass through the area between the elastic pressing sheet 35 and the side plate of the U-shaped notch 34, finally the cord 1 is led out and the rear end of the female buckle 3 extends into the shell 2 from the opening at the front end of the shell 2, the female buckle 3 is pressed by force (the force is large) backwards, the rear end of the female buckle 3 is pressed on the inclined plane at the front side of the bulge one 22, the bulge one 22 and the snap-plate one 23 are propped open towards two sides until sliding to the position of the chute one 21, the female buckle 3 does not extrude the bulge one 22 any more, the outward extrusion force received by the bulge one 22 is reduced or disappears (the chute one 21 is concave, when the chute one 21 is coincident with the bulge one 22, the extrusion to the chute one 21 is reduced or disappeared), the snap-plate one 23 is restored under the action of self elasticity, the bulge one 22 is, the female buckle 3 is clamped in the shell 2, and the female buckle 3 is installed.

Then, two thread ends of the thread rope 1 extending into the shell 2 are pulled out of the opening at the rear end of the shell 2, finally the front side surface of the male buckle 4 respectively passes through two thread holes 45 of the male buckle 4 and then extends out of the rear side surface of the male buckle 4, and finally the male buckle 4 is slid to align with the opening at the rear end of the shell 2 and is pressed into the shell 2; in the pressing process, the guide strip 44 at the front end of the male buckle 4 is aligned with the groove 31 of the female buckle 3 and passes through the two elastic pressing sheets 35 and then extends into the groove 31; the two sides of the pressing plate 41 at the rear end of the male buckle 4 press the inclined plane at the rear side of the second protrusion 25, the pressing plate 41 is continuously pressed forwards, the pressing plate 41 props the second protrusion 25 and the second clamping plate 24 towards the two sides, when the pressing plate slides to the position of the second sliding groove 42 at the two sides of the pressing plate 41, the outward extrusion force applied to the second protrusion 25 is reduced or disappears (the second sliding groove 42 is concave, when the second sliding groove 42 is overlapped with the second protrusion 25, the extrusion force applied to the second sliding groove 42 is reduced or disappears), the second clamping plate 24 resets and restores under the action of self elasticity, the second protrusion 25 is pushed into the second sliding groove 42, the male buckle 4 is clamped in the shell 2, and therefore the male buckle 4 is installed; at the moment, the front end of the trapezoidal block 43 is just positioned at the extrusion head 36 at the rear end of the two elastic pressing sheets 35, meanwhile, the part of the rear end of the pressing plate 41, which is positioned at the rear side of the second sliding groove 42, is outside the shell 2, and the second protrusion 25 is positioned at the front end inside the second sliding groove 42.

When the self-locking elastic buckle device is installed, two thread ends of the thread rope 1 penetrating out of the back side surface of the pressing plate 41 are installed on articles such as ready-made clothes, backpacks, bags, tents, shoes and the like, and the installation is finished.

After the installation is finished, when the cotton rope 1 is tightened, the cotton rope 1 on one side of the front side surface of the female buckle 3 is held by one hand, the shell 2 is held by the other hand, the self-locking elastic buckle device slides backwards, and the cotton rope 1 can be tightened. As shown in fig. 8, in the tightening process, when the housing 2 is held and slid backward (toward articles such as clothes, backpacks, bags, tents, shoes, etc.), the opposite cord 1 moves forward, and due to friction between the cord 1 and the female buckle 3 and the male buckle 4, the female buckle 3 and the male buckle 4 move forward when the cord 1 pulls the cord 1, in the process, the first sliding groove 21 moves forward to move the rear end of the first sliding groove to a position close to the first protrusion 22, and the second sliding groove 42 moves forward to move the rear end of the second sliding groove to a position close to the second protrusion 25, and due to the fact that the female buckle 3 and the male buckle 4 move downward simultaneously, there is no relative movement between the two, and there is no clamping between the front end of the male buckle 4 and the rear end of the female buckle 3, and the cord 1 is not clamped. Thus, the device can be moved easily during the backward movement.

As shown in fig. 9, after the tightening (movement) is finished, when the articles such as ready-made clothes, backpacks, bags, tents, shoes, etc. expand outwards, a pulling force is simultaneously applied to the two strings which penetrate out from the back side of the pressing plate 41 (which is equivalent to pinching one string 1 which penetrates out from the back side of the pressing plate 41 with two hands, and then pulling the two strings 1 simultaneously), the strings 1 deflect towards the two sides of the male buckle 4 after receiving the pulling force, the pulling force makes the strings 1 contact with the top of the male buckle 4 and press the top of the male buckle 4, the top of the male buckle 4 receives the extrusion forces of the two strings 1 at the two ends of the top (the extrusion forces are the resultant of the vertical downward force and the horizontal force of the male buckle 4 acted by the strings 1, because the two strings 1 are respectively pulled towards the two sides of the male buckle 4, the horizontal component forces of the two strings 1 on the male buckle 4 are opposite in the same direction, and cancel each other, and only the vertical component force, under the action of the force, the male buckle 4 slides forwards, so that the guide strip 44 moves forwards along the groove 31, meanwhile, the trapezoidal block 43 moves forwards along with the guide strip and gradually presses the pressing head 36 of the elastic pressing sheet 35 to deflect towards two sides to act with the side plates of the U-shaped notch 34 to press the wire rope, the larger the force applied to the male buckle 4 is, the larger the forward moving amplitude of the trapezoidal block 43 is, meanwhile, the larger the clamping force applied to the pressing head 36 to press the wire rope 1 is, and the self-locking of the wire rope 1 is realized.

When the thread rope 1 is loosened, the thread rope 1 on one side of the rear side face of the male buckle 4 is pulled by one hand, and the self-locking elastic buckle device slides forwards by pinching the shell 2 by the other hand, so that the thread rope 1 can be loosened. As shown in fig. 10, during the releasing process, when the housing 2 is held and slid forward (moved in a direction away from articles such as ready-made clothes, backpacks, bags, tents, shoes, etc.), the opposite cord 1 moves backward, due to friction between the cord 1 and the female buckle 3 and the male buckle 4, the female buckle 3 and the male buckle 4 also move backward when the cord 1 pulls the cord 1, in the process, the first sliding groove 21 moves backward so that the front end thereof moves to a position close to the first protrusion 22, the second sliding groove 42 moves backward so that the front end thereof moves to a position close to the second protrusion 25, due to the fact that the female buckle 3 and the male buckle 4 move backward simultaneously, there is no relative movement between the two, and the front end of the male buckle 4 and the rear end of the female buckle 3 are not clamped, and the cord 1 is not clamped. Therefore, the device can be moved easily in the process of moving forwards to realize the relaxation.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and not to limit the protection scope of the present invention.

Claims

1. The utility model provides a self-locking elasticity spiral-lock is put, includes the cotton rope, its characterized in that: the device also comprises a shell, a female buckle and a male buckle;

2. The self-locking buckle assembly of claim 1, further comprising: the left side and the right side of the front end of the shell are respectively provided with a first strip-shaped hole, and a first clamping plate is arranged in each first strip-shaped hole; the tail end of the first clamping plate is integrally arranged in the middle of the side face of the shell; the first bulge is arranged on the inner side face of one end of the clamping plate; a second strip-shaped hole is formed in each of the left side and the right side of the rear end of the shell, and a second clamping plate is arranged in each strip-shaped hole; the tail end of the second clamping plate is integrally arranged in the middle of the side face of the shell; the second bulge is arranged on the inner side surface of the second head end of the clamping plate; the first end of the clamping plate and the second end of the clamping plate can deflect outwards under the action of external force and can automatically reset after no external force is applied.

3. The self-locking buckle assembly of claim 1, further comprising: the first front side surface of the protrusion and the second rear side surface of the protrusion incline towards the interior of the shell.

4. The self-locking buckle assembly of any one of claims 1-3, further comprising: the outer side of the rear end of the elastic pressing sheet is provided with anti-skid grains.

5. The self-locking buckle assembly of any one of claims 1-3, further comprising: an extrusion head is arranged at the rear end of each elastic pressing sheet.

6. The self-locking buckle assembly of claim 5, further comprising: the length of the elastic pressing sheet and the length of the extrusion head are less than the length of the left and right side plates of the U-shaped notch.

7. The self-locking buckle assembly of claim 6, further comprising: the outer side of the extrusion head protrudes outwards to form a triangle.

8. The self-locking buckle assembly of claim 7, further comprising: and anti-skid grains are arranged on the outer side of the extrusion head.