Double-ring retaining ring and buffer device thereof

Abstract

A double-ring retaining ring is characterized in that one of a first ring and a second ring is connected with a shaft rod seat, and the other one is connected with a pair of bearing seats; the shaft rod seat is provided with a shaft hole, each bearing seat is provided with a pair of fixing arms, an accommodating groove with an opening is formed between each pair of fixing arms, a shaft rod penetrating through the shaft hole is arranged in the two accommodating grooves, two sides of the shaft rod are respectively provided with a combination pin hole, and a combination pin penetrates through each combination pin hole to be fixed on each pair of fixing arms; therefore, when the first ring penetrates through the backpack safety belt and is fixed, and a buffer bag is combined between the first ring and the second ring, through the design that the two combination pins can be damaged and the shaft rod can be separated from the two containing grooves, the buffer effect that the two combination pins of the double-ring retaining ring can be damaged to absorb impact force is achieved.

Description

Technical Field

[0001] The utility model relates to a safety buckle, in particular to a double-ring buckle which can be combined with a buffer bag and a buffer device thereof. Background Art

[0002] The existing backpack safety belt is combined with a ring body at the back ring, and a self-retracting lifelines (SRL) can be hung on the ring body. The self-retracting lifelines (SRL) is then connected to the hook of the steel cable and hung at a fixed place of the building or scaffolding.

[0003] In order to increase the cushioning effect when a person falls from a height while wearing a backpack safety belt, a cushioning bag can be connected between the main body of the wire rope winch type fall arrester and the ring body, or between the wire rope of the wire rope winch type fall arrester and the hook. Although the ring body combined with the safety harness can provide a hook buckle for the wire rope winch type fall arrester, the ring body itself lacks a design of cushioning force, so it can only be used as a buckle point for the wire rope winch type fall arrester in use, and cannot provide further cushioning effect. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a buckle with double rings, the connection structure between the double rings has a weak point that can be damaged, so that the buckle itself can absorb impact force, and can also provide a buffer bag and a wire rope winch type fall arrester, so as to achieve the technical effect that the buckle can enhance the buffering capacity when in use.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a double-ring buckle, comprising a first ring, a second ring, and a pivot device. The pivot device comprises an axle rod seat, a pair of receiving seats, and an axle rod, wherein the axle rod seat is connected to one of the first ring and the second ring, and the pair of receiving seats is connected to the other; the axle rod seat has an axle hole; the pair of receiving seats respectively have a pair of fixed arms, and a receiving groove and an opening are formed between the pair of fixed arms, and the opening is formed on one side of the receiving groove; the two sides of the axle rod in opposite directions respectively have a coupling pin hole, the axle rod passes through the axle hole and is placed in the two receiving grooves of the pair of receiving seats, a coupling pin is inserted in each of the coupling pin holes, and the two ends of each of the coupling pins are coupled to each pair of fixed arms.

[0006] Preferably, the shaft rod seat of the utility model comprises a pair of ring bodies, the pair of ring bodies are spaced apart and the shaft hole is formed in the pair of ring bodies, and the pair of ring bodies are located between the pair of receiving seats.

[0007] Preferably, the width of the opening of the utility model is greater than the diameter length of the shaft rod.

[0008] Preferably, one of the first ring and the second ring of the present invention is a detachable movable D ring.

[0009] Preferably, the first ring of the utility model is a detachable movable D-ring, and the second ring is a closed ring body; the first ring has a first connecting rod on the side close to the second ring, and the pair of ring bodies are connected to the first connecting rod; the second ring has a second connecting rod on the side close to the first ring, and the pair of receiving seats are connected to the second connecting rod.

[0010] Preferably, the two ends of the first connecting rod of the utility model are respectively connected to a first side rod and a second side rod; the free end of the first side rod is connected to a first latch seat, and the first latch seat has a first latch through hole; the free end of the second side rod is connected to a second latch seat, and the second latch seat has a second latch through hole, and the second latch through hole is opposite to the first latch through hole; a movable latch is inserted into the first latch through hole and the second latch through hole, and the movable latch is detachably combined with the first latch seat and the second latch seat.

[0011] Preferably, the movable latch of the utility model has a bolt rod and a head, a card block is elastically combined around the bolt rod, the head is connected to one end of the bolt rod and has a button, and the button drives the card block to retract into the bolt rod when pressed; the bolt rod passes through the first latch through hole and the second latch through hole, the head is stopped at the side of the second latch seat away from the first latch seat, and the card block is stopped at the side of the second latch seat facing the first latch seat.

[0012] Preferably, the movable latch of the utility model comprises a bolt rod and a head, the part of the bolt rod passing through the first bolt through-hole has a fixing groove, the head is connected to one end of the bolt rod, the other end of the bolt rod forms a conical surface, and the head is stopped at the side of the second latch seat facing away from the first latch seat; the first side rod and the first latch seat have a pin groove, the pin groove is communicated with the first latch through-hole, the surface of the first side rod has a long hole, the extension direction of the long hole is perpendicular to the axial direction of the bolt rod, and the long hole is communicated with the periphery of the pin groove; a pin and a spring are arranged in the pin groove, one end of the pin has an inclined surface matching the conical surface and is inserted into the fixing groove, and the spring abuts against the other end of the pin and the inner end of the pin groove; a push button is arranged on the first side rod, the push button passes through the long hole and is combined with the pin.

[0013] Preferably, the second ring of the present invention has a buckle rod on one side away from the first ring, and the buckle rod has two convex rings at both ends, and the contour of the outer circumference of each convex ring is larger than the contour of the outer circumference of the buckle rod.

[0014] In order to achieve the above-mentioned purpose, the utility model provides a buffer device of a double-ring buckle, comprising a double-ring buckle and a buffer bag. The double-ring buckle comprises a first ring, a second ring and a pivot device; the pivot device comprises an axle rod seat, a pair of receiving seats and an axle rod, wherein the axle rod seat is connected to one of the first ring and the second ring, and the pair of receiving seats is connected to the other; the axle rod seat has an axle hole; the pair of receiving seats respectively have a pair of fixed arms, and a receiving groove and an opening are formed between the pair of fixed arms, and the opening is formed on one side of the receiving groove; the two sides of the axle rod in opposite directions respectively have a coupling pin hole, the axle rod passes through the axle hole and is placed in the two receiving grooves of the pair of receiving seats, a coupling pin is inserted in each of the coupling pin holes, and the two ends of each of the coupling pins are coupled to each pair of fixed arms. The buffer bag comprises a belt body and a folded portion formed by folding the parts between the two ends of the belt body. The two ends of the belt body are respectively provided with a set of rings, one of the two sets of rings is looped on the first ring, and the other ring is looped on the second ring.

[0015] When the utility model is used, the first ring of the double-ring buckle is combined with the back or back ring of the backpack safety belt, the first ring and the second ring are respectively combined with two ends of a buffer bag, and then the steel cable winch type fall arrester is hung on the second ring buckle, and the hook buckle of the steel cable of the steel cable winch type fall arrester is hung on a fixed place of a building or a scaffold.

[0016] The effect of the utility model is that when a user wearing the backpack safety belt falls from a height, the human body will exert force on the second ring, and the impact force on the second ring will destroy the structure of each of the connecting pins connected to each pair of fixed arms, so that the two connecting pins absorb the impact force and after being destroyed, the shaft rod will be separated from the opening of the two receiving seats, so that the second ring is separated from the first ring, and the impact force is then borne by the buffer bag. Therefore, the double-ring buckle of the utility model has its own buffering ability, and can be combined with the buffer bag and the wire rope winch type fall arrester, so it has a better buffering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of a preferred embodiment of the utility model.

[0018] Figure 2 It is an exploded view of the above preferred embodiment of the utility model.

[0019] Figure 3 for Figure 1 Top view of the .

[0020] Figure 4 for Figure 3 Cross-sectional view in the 4-4 direction.

[0021] Figure 5 for Figure 3 Cross-sectional view in the 5-5 direction.

[0022] Figure 6 for Figure 5 Schematic diagram of the separation of the shaft rod and the socket.

[0023] Figure 7 for Figure 1 Side view of.

[0024] Figure 8 for Figure 7 Schematic diagram of the action of the second ring rotating relative to the first ring.

[0025] Fig. 9 It is a three-dimensional diagram of the double-ring buckle combined with the buffer bag of the utility model.

[0026] Description of reference numerals:

[0027] 100: Double ring buckle

[0028] 200: Double ring buckle buffer device

[0029] 10: First Ring

[0030] 12: First connecting rod

[0031] 14: First sidebar

[0032] 141: Long hole

[0033] 142: Latch

[0034] 143: Notch

[0035] 144: Inclined surface

[0036] 145: Spring

[0037] 146: Push Button

[0038] 147: convex rod

[0039] 15: First latch seat

[0040] 151: First bolt perforation

[0041] 152: Latch slot

[0042] 153: Mounting hole

[0043] 154: Plug

[0044] 16: Second side bar

[0045] 17: Second latch seat

[0046] 171: Second bolt hole

[0047] 172: Limiting screw hole

[0048] 173: Limiting parts

[0049] 18: Active latch

[0050] 181: Bolt

[0051] 182: Head

[0052] 183: Conical surface

[0053] 184: Fixed slot

[0054] 185: Fixed long slot

[0055] 186: Block

[0056] 187: Button

[0057] 20: Second Ring

[0058] 22: Second connecting rod

[0059] 24: Buckle the hanging rod

[0060] 241: convex ring

[0061] 26: Ring rod

[0062] 30: Axle seat

[0063] 32: Ring

[0064] 321: Shaft hole

[0065] 40: Socket

[0066] 42: Base

[0067] 44: Fixed arm

[0068] 441: Riveting hole

[0069] 46: Storage tank

[0070] 461: Opening

[0071] 50: Shaft

[0072] 52: Combination pin hole

[0073] 521: Binding pin

[0074] 60: Buffer pack

[0075] 62: With body

[0076] 621: Ring

[0077] 64: Folding

[0078] A: Pivot device

[0079] D1: diameter length

[0080] W1: Width DETAILED DESCRIPTION

[0081] In order to more clearly illustrate the present invention, a preferred embodiment is given below with detailed description in conjunction with the accompanying drawings. Figures 1 to 5 As shown, a double-ring buckle 100 of a preferred embodiment of the utility model comprises a first ring 10, a second ring 20 arranged at intervals in the upper and lower parts, and a pivot device A for connecting the first ring 10 and the second ring 20, wherein:

[0082] The first ring 10 is a removable movable D-ring. The first ring 10 has a first connecting rod 12 on one side close to the second ring 20. The first connecting rod 12 is a straight rod and the two ends of the first connecting rod 12 are respectively connected to a first side rod 14 and a second side rod 16. The first side rod 14 and the second side rod 16 are straight rods opposite to each other, and extend from the two ends of the first connecting rod 12 in a direction away from the second ring 20. The free end of the first side rod 14 is connected to a first latch seat 15, and the first latch seat 15 has a first latch through hole 151; the free end of the second side rod 16 is connected to a second latch seat 17, and the second latch seat 17 has a second latch through hole 171, and the second latch through hole 171 is opposite to the first latch through hole 151.

[0083] The first side bar 14 and the first latch seat 15 have a latch slot 152, the extension direction of the latch slot 152 is the same as the extension direction of the first side bar, and the upper end of the latch slot 152 is communicated with the first latch through hole 151; the upper side of the first latch seat 15 has a mounting hole 153, the mounting hole 153 is opposite to the latch slot 152, and a plug 154 is embedded in the mounting hole 153. The surface of the first side bar 14 has a long hole 141, the extension direction of the long hole 141 is the same as the extension direction of the first side bar 14, and the long hole 141 is communicated with the periphery of the latch slot 152. One side of the second latch seat 17, specifically, the upper side of the second latch seat 17 has a stopper screw hole 172, and a stopper 173 is screwed into the stopper screw hole 172, and the stopper 173 is a screw rod and one end of which extends into the second latch through hole 171.

[0084] A latch 142 and a spring 145 are disposed in the latch slot 152. The latch 142 is a straight rod having a notch 143 around it. One end of the latch 142 has an inclined surface 144, and the inclined surface 144 extends into the first latch through hole 151. The spring 145 abuts against the other end of the latch 142 and the inner end of the latch slot 152. A push button 146 is disposed on the first side rod 14. The push button 146 has a convex rod portion 147. The convex rod portion 147 passes through the long hole 141 and the free end of the convex rod portion 147 is embedded in the notch 143 of the latch 142. The convex rod portion 147 is screwed and combined with the latch 142 by passing a screw through the push button 146.

[0085] The first ring 10 further includes a movable latch 18, which is inserted into the first latch through hole 151 of the first latch seat 15 and the second latch through hole 171 of the second latch seat 17, and the movable latch 18 is detachably combined with the first latch seat 15 and the second latch seat 17. Specifically, the movable latch 18 has a bolt rod 181 and a head 182; the head 182 is connected to one end of the bolt rod 181, and the head 182 is stopped at the side of the second latch seat 17 away from the first latch seat 15. The axial direction of the bolt rod 181 is substantially perpendicular to the extending direction of the first side rod 14 and the long hole 141, and the bolt rod 181 passes through the first latch through hole 151 and the second latch through hole 171. The other end of the bolt rod 181 forms a tapered surface 183, and when the bolt rod 181 passes through the first latch through hole 151, the tapered surface 183 is used to push away the inclined surface 144 of the latch pin 142.

[0086] The portion of the bolt rod 181 passing through the first latch through hole 151 has a fixed groove 184; the periphery of the bolt rod 181 has a fixed long groove 185, which is a straight long groove extending along the axial direction of the bolt rod 181. One end of the latch pin 142 having the inclined surface 144 is inserted into the fixed groove 184 and limits the movement of the movable latch 18, thereby detachably fixing the movable latch 18 to the first latch seat 15 and the second latch seat 17. One end of the stopper 173 extends into the fixed long groove 185 to limit the range of the movable latch 18 that can move along the axial direction of the bolt rod 181. A block 186 is elastically combined around the movable latch 18, and the head 182 has a button 187. When the button 187 is pressed, the block 186 is driven to retract into the bolt rod 181, and the block 186 is stopped at the side of the second latch seat 17 facing the first latch seat 15.

[0087] The second ring 20 is a closed ring. The second ring 20 has a second connecting rod 22 on one side close to the first ring 10, and the second connecting rod 22 is a straight rod; the second ring 20 has a hook rod 24 on the other side away from the first ring 10, and the hook rod 24 is a straight rod and has two convex rings 241 at both ends of the hook rod 24, and the contour of the outer circumference of each convex ring 241 is larger than the contour of the outer circumference of the hook rod 24. A two-ring rod 26 is connected between the second connecting rod 22 and the hook rod 24. The two-ring rod 26, the second connecting rod 22 and the hook rod 24 are connected to form the second ring 20.

[0088] The pivot device A includes a shaft rod seat 30, a pair of receiving seats 40 and a shaft rod 50. Figure 2 and Figures 4 to 6 As shown, the shaft rod seat 30 includes a pair of ring bodies 32, and the pair of ring bodies 32 are spaced apart and connected to both ends of the first connecting rod 12. An axial hole 321 is formed in the pair of ring bodies 32, and the axial direction of the axial hole 321 is substantially parallel to the axial direction of the bolt rod 181.

[0089] The pair of receiving seats 40 are connected to the two ends of the second connecting rod 22 at intervals, and the two ring bodies 32 are located between the pair of receiving seats 40. Each receiving seat 40 has a base 42, and the base 42 is connected to the second connecting rod 22 of the second ring 20. Each base 42 is connected to a pair of fixing arms 44, and each pair of fixing arms 44 extends from the base 42 toward the first ring 10. Each fixing arm 44 in each pair of fixing arms 44 has a rivet hole 441, and the two rivet holes 441 of each pair of fixing arms 44 are opposite to each other front and back; a receiving groove 46 and an opening 461 are formed between each pair of fixing arms 44, and each opening 461 is formed on one side of each receiving groove 46; in this preferred embodiment, it is on the upper side. The inner wall of each accommodating groove 46 is a C-shaped arc surface; the width W1 of each opening 461, that is, the length of the shortest distance between the free ends of each pair of fixing arms 44 is equal to or greater than the diameter length D1 of the shaft 50.

[0090] The shaft 50 is a round straight rod and has a coupling pin hole 52 on both sides of the shaft 50 in opposite directions. The shaft 50 passes through the shaft hole 321 of the shaft seat 30 and is placed in the two receiving grooves 46 of the pair of receiving seats 40. A coupling pin 521 is inserted through each coupling pin hole 52, and both ends of each coupling pin 521 are coupled to each pair of fixed arms 44. Specifically, both ends of each coupling pin 521 are riveted to the two riveting holes 441 of each pair of fixed arms 44; and the strength of each coupling pin 521 coupled to each pair of fixed arms 44 is less than the strength of the shaft 50 itself or the strength of the shaft 50 coupled to the shaft seat 30. That is, in the structure in which the first ring 10 is rotatably coupled to the second ring 20 through the pivot device A, the two coupling pins 521 are pre-set as weak points that can be used to absorb impact force when the first ring 10 is damaged. When the position of the first ring 10 is fixed and the second ring 20 is subjected to external impact, the two coupling pins 521 will be broken before the shaft 50 , so that the first ring 10 is separated from the second ring 20 .

[0091] When the double ring buckle 100 of the preferred embodiment of the present invention is used, the double ring buckle 100 is combined with the back ring of the backpack safety belt. Figures 1 to 4 As shown, the user pushes the push button 146 downward to drive the latch 142 to move downward and disengage from the fixed groove 184 inserted into the bolt rod 181, thereby releasing the movable latch 18; at the same time, the user presses the button 187 of the head 182 to retract the block 186 into the bolt rod 181, and then the user can pull the movable latch 18 out of the first latch seat 15 to open the first ring 10. Then the user passes the movable latch 18 of the first ring 10 through the back ring of the backpack safety belt, and reinserts the bolt rod 181 of the movable latch 18 into the first latch seat 15. During this process, the latch 142 is inserted into the fixed groove 184 of the bolt rod 181 again, and the block 186 is stopped at the side of the second latch seat 17 facing the first latch seat 15, thereby fixing the movable latch 18 between the first latch seat 15 and the second latch seat 17, completing the operation of setting the double-ring buckle 100 on the backpack safety belt.

[0092] Please see Figure 7 and Figure 8 As shown, when the double ring buckle 100 of the preferred embodiment of the present invention is combined with the back ring of the backpack safety belt, the second ring 20 can rotate relative to the first ring 10 with the shaft 50 as the rotation center. Fig. 9As shown, when the double ring buckle 100 is used, the buckle rod 24 of the second ring 20 can be buckled and hung by a wire rope winch type fall arrester. The first ring 10 and the second ring 20 are combined to provide a buffer bag 60, and the buffer bag 60 includes a belt body 62 and a folded portion 64 formed by folding and combining the middle part of the belt body 62. The two ends of the belt body 62 are respectively provided with a set of rings 621, one of which is looped on the first connecting rod 12 of the first ring 10, and the other is looped on the second connecting rod 22 of the second ring 20. The combination of the double ring buckle 100 and the buffer bag 60 provides a double ring buckle buffer device 200.

[0093] When the double ring buckle 100 is fixed to the back ring of the backpack safety belt, the buffer bag 60 is combined with the double ring buckle 100 and the second ring 20 of the double ring buckle 100 is subjected to external force impact. Figure 4 , Figure 6 and Fig. 9 As shown, since the two combining pins 521 of the double ring buckle 100 are pre-set weak points for absorbing impact force, and the width W1 of each opening 461 is equal to or greater than the diameter length D1 of the shaft 50, after the two combining pins 521 absorb impact force and are damaged, the shaft 50 can smoothly detach from the receiving groove 46 of the second receiving seat 40 through the opening 461 of the second receiving seat 40, so that the first ring 10 and the second ring 20 of the double ring buckle 100 are separated. When the first ring 10 and the second ring 20 are separated, and the second ring 20 is forced to move in a direction away from the first ring 10, the two ends of the buffer bag 60 will be pulled in opposite directions, so that the folding portion 64 of the buffer bag 60 bears the impact force. Therefore, the structure of the double ring buckle 100 itself can produce a buffering function, and the buffer bag 60 combined with the double ring buckle 100 can also buffer, so the buffering effect is better. In other preferred embodiments, the width W1 of each of the openings 461 may also be smaller than the diameter length D1 of the shaft rod 50, as long as the width W1 of each of the openings 461 does not cause the shaft rod 50 to be unable to successfully open each pair of fixing arms 44 and disengage from each of the accommodating grooves 46 after the two combining pins 521 are damaged.

[0094] In addition to the above preferred embodiment, the present invention has the shaft seat 30 of the pivot device A connected to the first connecting rod 12 of the first ring 10, and the two receiving seats 40 connected to the second connecting rod 22 of the second ring 20; the two receiving seats 40 may also be connected to the first connecting rod 12 of the first ring 10, and the shaft seat 30 may be connected to the second connecting rod 22 of the second ring 20, and the shaft 50 may still be combined with the shaft seat 30 and the two receiving seats 40 in the same manner as the above preferred embodiment, so that the first ring 10 can be rotatably connected to the second ring 20 through the pivot device A, and the first ring 10 is fixed. When the second ring 20 is impacted by external force, the two combining pins 521 may be damaged to absorb the impact force and separate the first ring 10 from the second ring 20. In addition, the structure of the first ring 10 is not limited to a detachable active D ring, but may also be a closed ring body, and the structure of the second ring 20 is not limited to a closed ring body, but may also be a detachable active D ring.

[0095] The above description is only a preferred feasible embodiment of the present utility model. Any equivalent changes made by applying the specification and claims of the present utility model should be included in the patent scope of the present utility model.

Claims

1. A double ring buckle, characterized in that: include:

1. First ring; 1. Second ring; as well as A pivot device includes an axle rod seat, a pair of receiving seats and an axle rod, wherein the axle rod seat is connected to one of the first ring and the second ring, and the pair of receiving seats is connected to the other; the axle rod seat has an axle hole; the pair of receiving seats respectively have a pair of fixing arms, a receiving groove and an opening are formed between the pair of fixing arms, and the opening is formed on one side of the receiving groove; the axle rod has a combining pin hole on both sides in opposite directions, the axle rod passes through the axle hole and is inserted into the two receiving grooves of the pair of receiving seats, a combining pin is inserted through each of the combining pin holes, and both ends of each of the combining pins are combined with each pair of fixing arms.

2. The double ring buckle as claimed in claim 1, characterized in that: The shaft rod seat includes a pair of ring bodies, the pair of ring bodies are spaced apart and the shaft hole is formed in the pair of ring bodies, and the pair of ring bodies are located between the pair of receiving seats.

3. The double ring buckle as claimed in claim 2, characterized in that: The width of the opening is greater than the diameter length of the shaft.

4. The double ring buckle as claimed in claim 2, characterized in that: One of the first ring and the second ring is a detachable movable D ring.

5. The double ring buckle as claimed in claim 4, characterized in that: The first ring is a detachable movable D-ring, and the second ring is a closed ring body; the first ring has a first connecting rod on the side close to the second ring, and the pair of ring bodies are connected to the first connecting rod; the second ring has a second connecting rod on the side close to the first ring, and the pair of receiving seats are connected to the second connecting rod.

6. The double ring buckle as claimed in claim 5, characterized in that: The two ends of the first connecting rod are respectively connected to a first side rod and a second side rod; the free end of the first side rod is connected to a first latch seat, and the first latch seat has a first latch through hole; the free end of the second side rod is connected to a second latch seat, and the second latch seat has a second latch through hole, and the second latch through hole is opposite to the first latch through hole; a movable latch is inserted through the first latch through hole and the second latch through hole, and the movable latch is detachably combined with the first latch seat and the second latch seat.

7. The double ring buckle according to claim 6, characterized in that: The movable latch has a bolt rod and a head, a block is elastically combined with the periphery of the bolt rod, the head is connected to one end of the bolt rod and has a button, and when the button is pressed, the block is driven to retract into the bolt rod; the bolt rod passes through the first latch through hole and the second latch through hole, the head is stopped at the side of the second latch seat away from the first latch seat, and the block is stopped at the side of the second latch seat facing the first latch seat.

8. The double ring buckle as claimed in claim 6, characterized in that: The movable latch comprises a bolt rod and a head, the part of the bolt rod passing through the first bolt through-hole comprises a fixing groove, the head is connected to one end of the bolt rod, the other end of the bolt rod forms a conical surface, and the head is stopped at the side of the second latch seat facing away from the first latch seat; the first side rod and the first latch seat have a latch groove, the latch groove is communicated with the first latch through-hole, the surface of the first side rod has a long hole, the extension direction of the long hole is perpendicular to the axial direction of the bolt rod, and the long hole is communicated with the periphery of the latch groove; a latch pin and a spring are arranged in the latch groove, one end of the latch pin has an inclined surface matching the conical surface and is inserted into the fixing groove, and the spring abuts against the other end of the latch pin and the inner end of the latch groove; a push button is arranged on the first side rod, the push button passes through the long hole and is combined with the latch pin.

9. The double ring buckle as claimed in claim 5, characterized in that: The second ring has a hook rod on one side away from the first ring. The hook rod has two convex rings at both ends. The contour of the outer peripheral surface of each convex ring is larger than the contour of the outer peripheral surface of the hook rod.

10. A double-ring buckle buffer device, characterized in that: include: A double-ring buckle ring, comprising a first ring, a second ring and a pivot device; the pivot device comprises an axle rod seat, a pair of receiving seats and an axle rod, wherein the axle rod seat is connected to one of the first ring and the second ring, and the pair of receiving seats is connected to the other; the axle rod seat has an axle hole; the pair of receiving seats respectively have a pair of fixing arms, a receiving groove and an opening are formed between the pair of fixing arms, and the opening is formed on one side of the receiving groove; the two sides of the axle rod in opposite directions respectively have a combining pin hole, the axle rod passes through the axle hole and is placed in the two receiving grooves of the pair of receiving seats, a combining pin is inserted through each of the combining pin holes, and the two ends of each of the combining pins are combined with each pair of fixing arms; as well as A buffer bag comprises a belt body and a folded portion formed by folding the parts between the two ends of the belt body. The two ends of the belt body are respectively provided with a set of rings, one of the two rings is sleeved on the first ring, and the other ring is sleeved on the second ring.

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