TWI871225B - Double ring buckle and its buffer device - Google Patents

Abstract

A double-ring buckle ring is provided, wherein one of the first ring and the second ring is connected to a shaft seat, and the other is connected to a pair of receiving seats; the shaft seat has an axis hole, each receiving seat has a pair of fixing arms, and a receiving groove with an opening is formed between each pair of fixing arms. A shaft passing through the axis hole is placed in the two receiving grooves, and a coupling pin hole is respectively provided on both sides of the shaft. A coupling pin is passed through the coupling pin hole to be fixed to each pair of fixed arms; thereby, when the first ring of the present invention is passed through the fixing of the backpack safety belt and a buffer bag is combined between the first ring and the second ring, the two coupling pins can be damaged and the shaft can be detached from the two accommodating grooves, providing a buffering effect of absorbing impact force by allowing the two coupling pins of the double-ring buckle to be damaged.

Description

Double ring buckle and its buffer device

The present invention relates to a safety buckle; in particular, to a double-ring buckle that can be combined with a buffer bag and a buffer device thereof.

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

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 cable reel type fall arrester and the ring, or between the steel cable of the cable reel type fall arrester and the hook. Although the above-mentioned ring combined with the safety harness can provide a hook for the cable reel type fall arrester, the ring itself lacks a design of cushioning force, so it can only be used as a buckle point for the cable reel type fall arrester in use, and cannot provide further cushioning effect.

In view of this, the purpose of the present invention 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 the impact force, and can also be used for the buffer bag and the steel cable reel type fall arrester to achieve the effect of enhancing the buffering ability of the buckle when in use.

In order to achieve the above object, the present invention provides a double-ring buckle, including a first ring, a second ring, and a pivot device. The pivot device includes a shaft seat, a pair of receiving seats and a shaft, wherein the shaft 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 shaft seat has a shaft 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 shaft has a coupling pin hole on both sides, the shaft passes through the shaft hole and is placed in the receiving grooves of the pair of receiving seats, a coupling pin is passed through each coupling pin hole, and both ends of each coupling pin are coupled to each pair of fixed arms.

In order to achieve the above object, the present invention provides a double-ring buckle buffer device, including a double-ring buckle and a buffer bag. The double-ring buckle ring includes a first ring, a second ring and a pivot device; the pivot device includes a shaft seat, a pair of receiving seats and a shaft, wherein the shaft 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 shaft seat has an axis hole; the pair of receiving seats respectively have a pair of fixed arms, 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 shaft have a connecting pin hole respectively, the shaft passes through the axis hole and is placed in the receiving grooves of the pair of receiving seats, a connecting pin is passed through each of the connecting pin holes, and the two ends of each of the connecting pins are connected to each pair of fixed arms. The buffer bag includes a belt body and a folded portion formed by folding and combining the two ends of the belt body. The two ends of the belt body each have a set of rings, one of the rings is looped on the first ring, and the other ring is looped on the second ring.

When the present invention is used, the first ring of the double-ring buckle is connected to the back or back ring of the backpack safety belt, and the first ring and the second ring are respectively connected to the two ends of a cushioning bag, and then the steel cable reel-type fall arrester is hung on the second ring buckle, and the hook of the steel cable of the steel cable reel-type fall arrester is hung on a fixed place of a building or scaffolding.

The effect of the present invention 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 connecting pin 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. In this way, the double-ring buckle of the present invention has its own buffering ability, and can be combined with the buffer bag and the steel cable reel-type fall arrester, so it has a better buffering effect.

In order to explain the present invention more clearly, a preferred embodiment is given and described in detail with drawings. Please refer to Figures 1 to 5, which are a double-ring buckle ring 100 of a preferred embodiment of the present invention, including a first ring 10, a second ring 20 and a pivot device A connected between the first ring 10 and the second ring 20, wherein: The first ring 10 is a detachable 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 opposite straight rods, and extend from the two ends of the first connecting rod 12 in the 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.

The first side rod 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 rod, 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 vertically opposite to the latch slot 152, and a plug body 154 is embedded in the mounting hole 153. The surface of the first side rod 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 rod 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, has a stopper screw hole 172 on the upper side of the second latch seat 17, and a stopper 173 is screwed into the stopper screw hole 172. The stopper 173 is a screw rod and one end of the screw rod extends into the second latch through hole 171.

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 provided 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 to the latch 142 by passing a screw through the push button 146.

The first ring 10 further includes a movable bolt 18, which is inserted through the first bolt through hole 151 of the first bolt seat 15 and the second bolt through hole 171 of the second bolt seat 17, and the movable bolt 18 is detachably coupled to the first bolt seat 15 and the second bolt seat 17. Specifically, the movable bolt 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 stops at the side of the second bolt seat 17 away from the first bolt seat 15. The axis of the bolt rod 181 is substantially perpendicular to the extension 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 open the inclined surface 144 of the latch pin 142.

The portion of the bolt rod 181 passing through the first bolt through hole 151 has a fixed groove 184; the circumference of the bolt rod 181 has a fixed long groove 185, and the fixed long groove 185 is a straight long groove extending along the axial direction of the bolt rod 181. One end of the latch 142 having the inclined surface 144 is inserted into the fixed groove 184 and limits the movement of the movable bolt 18, thereby removably fixing the movable bolt 18 to the first bolt seat 15 and the second bolt seat 17. One end of the stopper 173 extends into the fixed long groove 185 to limit the range of the movable bolt 18 that can move along the axial direction of the bolt rod 181. A block 186 is elastically coupled around the movable bolt 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 stops at the side of the second bolt seat 17 facing the first bolt seat 15.

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. 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. The hook rod 24 is a straight rod and has two convex rings 241 at both ends. The outer peripheral contour of each convex ring 241 is larger than the outer peripheral contour of the hook rod 24. Two ring rods 26 are 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.

The pivot device A includes a shaft seat 30, a pair of receiving seats 40 and a shaft 50. Please refer to Figures 2 and 4 to 6. The shaft seat 30 includes a pair of rings 32, which are spaced and connected to the two ends of the first connecting rod 12. An axial hole 321 is formed in the pair of rings 32, and the axial direction of the axial hole 321 is roughly parallel to the axial direction of the bolt rod 181.

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 of the receiving seats 40 has a base 42, and the base 42 is connected to the second connecting rod 22 of the second ring 20. Each of the bases 42 is connected to a pair of fixed arms 44, and each pair of fixed arms 44 extends from the base 42 toward the first ring 10. Each of the fixed arms 44 in each pair of fixed arms 44 has a rivet hole 441, and the two rivet holes 441 of each pair of fixed arms 44 are opposite to each other front and back; a receiving groove 46 and an opening 461 are formed between each pair of fixed arms 44, and each of the openings 461 is formed on one side of each of the receiving grooves 46; such as the 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 fixed arms 44 is equal to or greater than the diameter length D1 of the shaft 50.

The shaft 50 is a round straight rod and has a coupling pin hole 52 on both sides of the shaft 50. The shaft 50 passes through the shaft hole 321 of the shaft seat 30 and is placed in the receiving grooves 46 of the pair of receiving seats 40. A coupling pin 521 is passed 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 rivet 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 where the first ring 10 is rotatably coupled to the second ring 20 via the pivot device A, the two coupling pins 521 are pre-set as weak points that can be used to absorb impact force when damaged. When the position of the first ring 10 is fixed and the second ring 20 is subjected to external force impact, the two coupling pins 521 will be damaged before the shaft 50, so that the first ring 10 and the second ring 20 are separated.

When the double-ring buckle 100 of the preferred embodiment of the present invention is used, the double-ring buckle 100 is coupled to the back ring of the backpack safety belt. Referring to FIGS. 1 to 4 , the user pushes down the push button 146 to drive the latch 142 to move downward and disengage from the fixing slot 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 the process, the latch 142 is inserted into the fixing groove 184 of the bolt rod 181 again, and the block 186 stops 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.

7 and 8, when the double-ring buckle 100 of the preferred embodiment of the present invention is coupled to 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. Referring to FIG9, when the double-ring buckle 100 is used, the hook rod 24 of the second ring 20 can be hooked with a steel cable reel 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 the middle part of the belt body 62. The two ends of the belt body 62 have a set of rings 621 respectively. One of the rings 621 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.

When the double-ring buckle 100 is fixed to the back ring of the backpack safety belt, the cushioning 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. Please refer to FIG. 4, FIG. 6 and FIG. 9. Since the two coupling pins 521 of the double-ring buckle ring 100 are pre-set as 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 coupling pins 521 absorb the impact force and are damaged, the shaft 50 can be smoothly separated from the receiving groove 46 of the two receiving seats 40 through the openings 461 of the two receiving seats 40, so that the first ring 10 and the second ring 20 of the double-ring buckle ring 100 are separated. When the first ring 10 is separated from the second ring 20, and the second ring 20 is forced to move away from the first ring 10, the two ends of the buffer bag 60 are pulled in opposite directions, so that the folded portion 64 of the buffer bag 60 bears the impact force. In this way, 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 opening 461 may also be smaller than the diameter length D1 of the shaft 50, as long as the width W1 of each opening 461 does not cause the shaft 50 to be unable to smoothly push apart each pair of fixed arms 44 and disengage from each receiving groove 46 after the two coupling pins 521 are damaged.

In addition to the above preferred embodiments, the present invention further includes the shaft seat 30 of the pivot device A being connected to the first connecting rod 12 of the first ring 10, and the two receiving seats 40 being 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 ... two receiving seats 40 may also be connected to the first connecting rod 12 of the first ring 10, and the two receiving seats 40 may also be connected to the second connecting rod 22 of the second ring 20, and the two receiving seats 40 may also be connected to the first connecting rod 12 of the first ring 10, and the two receiving seats 40 may also be connected to the second connecting rod 22 of the second ring 20, and the two receiving seats 40 may also be connected to the second connecting rod 22 of the second ring 20, and the two receiving seats The shaft 50 is still combined with the shaft seat 30 and the two receiving seats 40 in the same manner as the above-mentioned preferred embodiment, and 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 coupling pins 521 can 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 movable D ring, but can also be a closed ring body, and the structure of the second ring 20 is not limited to a closed ring body, but can also be a detachable movable D ring.

The above is only the preferred feasible embodiment of the present invention. Any equivalent changes made by applying the present invention specification and the scope of patent application should be included in the patent scope of the present invention.

100: Double ring buckle

200: Double ring buckle buffer device

10: First Ring

12: First connecting rod

14: First sidebar

141: Long hole

142: Latch

143: Notch

144: Inclined surface

145: Spring

146: Push button

147: convex rod part

15: First seat

151: First piercing

152: Latch slot

153:Mounting hole

154: Plug

16: Second sidebar

17: Second seat

171: Second piercing

172: Limiting screw hole

173: Limiting parts

18:Activity gate

181: Bolt

182:Head

183: Conical surface

184:Fixed slot

185: Fixed long slot

186: Card block

187:Button

20: Second Ring

22: Second connecting rod

24: Buckle the hanging rod

241: convex ring

26: Ring rod

30: Shaft seat

32: Ring

321: shaft hole

40: Receiver

42: Base

44: Fixed arm

441: Riveting hole

46: Storage tank

461: Open mouth

50: Shaft

52:Joining pin hole

521:Joining pin

60: Buffer Packet

62: Body

621: Ring

64: Folding part

A: Pivot device

D1: Diameter length

W1: Width

Figure 1 is a three-dimensional diagram of a preferred embodiment of the present invention.

Figure 2 is a disassembled diagram of the above-mentioned preferred embodiment of the present invention.

Figure 3 is a top view of Figure 1.

Figure 4 is a cross-sectional view taken along the 4-4 direction of Figure 3.

Figure 5 is a cross-sectional view taken along the 5-5 direction of Figure 3.

Figure 6 is a schematic diagram of the separation of the shaft and the receiving seat in Figure 5.

Figure 7 is a side view of Figure 1.

Figure 8 is a schematic diagram of the second ring of Figure 7 rotating relative to the first ring.

Figure 9 is a three-dimensional diagram of the double-ring buckle combined with the buffer bag of the present invention.

100: Double ring buckle

10: First Ring

12: First connecting rod

15: First seat

17: Second seat

18:Activity gate

181: Bolt

182:Head

186: Card block

20: Second Ring

24: Buckle the hanging rod

30: Shaft seat

32: Ring

321: shaft hole

40: Receiver

42: Base

44: Fixed arm

46: Storage tank

461: Open mouth

50: Shaft

521:Joining pin

A: Pivot device

Claims (10)

A double-ring buckle ring includes: a first ring; a second ring; and a pivot device, including a shaft seat, a pair of receiving seats and a shaft, wherein the shaft 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 shaft seat has a shaft 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 shaft has a coupling pin hole on both sides, the shaft passes through the shaft hole and is placed in the receiving grooves of the pair of receiving seats, a coupling pin is passed through each coupling pin hole, and both ends of each coupling pin are coupled to each pair of fixed arms. A double-ring buckle as described in claim 1, wherein the shaft seat includes a pair of rings, the pair of rings are spaced apart and the shaft hole is formed in the pair of rings, and the pair of rings are located between the pair of receiving seats. A double ring buckle as described in claim 2, wherein the width of the opening is greater than the diameter length of the shaft. The double-ring buckle as described in claim 2, wherein one of the first ring and the second ring is a detachable movable D-ring. A double-ring buckle as described in claim 4, wherein 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 a 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 a side close to the first ring, and the pair of receiving seats are connected to the second connecting rod. A double-ring buckle as described in claim 5, wherein 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, 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, 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 connected to the first latch seat and the second latch seat. A double-ring buckle as described in claim 6, wherein the movable bolt has a bolt rod and a head, a block is elastically coupled to the periphery of the bolt rod, the head is connected to one end of the bolt rod and has a button, and the button drives the block to retract into the bolt rod when pressed; the bolt rod passes through the first bolt through hole and the second bolt through hole, the head stops at the side of the second bolt seat facing away from the first bolt seat, and the block stops at the side of the second bolt seat facing the first bolt seat. A double-ring buckle as described in claim 6, wherein the movable bolt has a bolt rod and a head, the portion of the bolt rod that passes 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 stops at the side of the second bolt seat away from the first bolt seat; the first side rod and the first bolt seat have a latch groove therein, the latch groove is communicated with the first bolt through-hole, and the first The surface of the 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 connected to the periphery of the bolt slot; a bolt and a spring are arranged in the bolt slot, one end of the bolt has an inclined surface matching the tapered surface and is inserted into the fixing slot, and the spring abuts against the other end of the bolt and the inner end of the bolt slot; a push button is arranged on the first side rod, and the push button passes through the long hole and is combined with the bolt. A double-ring buckle as described in claim 5, wherein the second ring has a buckle rod on a side away from the first ring, and the buckle rod has two protruding rings at both ends, and the contour of the outer circumference of each protruding ring is larger than the contour of the outer circumference of the buckle rod. A double-ring buckle ring buffer device, comprising: A double-ring buckle ring, comprising a first ring, a second ring and a pivot device; the pivot device comprises a shaft seat, a pair of receiving seats and a shaft, wherein the shaft 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 shaft seat has an axis hole; the pair of receiving seats respectively have a pair of fixed arms, a receiving groove and an opening are formed between the pair of fixed arms, and the opening is formed in the receiving groove. The shaft rod has a coupling pin hole on both sides, the shaft rod passes through the shaft hole and is placed in the receiving grooves of the pair of receiving seats, a coupling pin is passed through each coupling pin hole, and both ends of each coupling pin are coupled to each pair of fixed arms; and a buffer bag, including a belt body and a folded portion formed by folding and coupling a portion between the two ends of the belt body, the two ends of the belt body have a set of rings, one of the rings is looped on the first ring, and the other ring is looped on the second ring.

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