Fall arrest connection device

Abstract

A kind of anti-falling connecting device, including the hanging rod of U shape, the inside of hanging rod forms recessed portion with gap, the two ends of hanging rod are connected with first sleeve and second sleeve respectively, first sleeve is combined with a bolt, the latch rod of movable latch is arranged in first sleeve and second sleeve to close gap, latch rod has the head connected with rod portion, guide groove is formed on the outer surface of rod portion, including first, second, third groove section, first groove section has limiting slot for the inner end of bolt to pass in, thereby limiting the rotation of latch rod, at least one protruding clamping piece is arranged on the outer surface of rod portion, to be engaged with the inner side of first sleeve, button is arranged on the head to control the protrusion or retraction of at least one clamping piece;When user presses the button of head with hand, it can be operated with the same hand to rotate and move along the axial direction to open gap, it is convenient for user to operate.

Description

Technical Field

[0001] This utility model relates to a connection device for a fall protection safety device; in particular, it refers to a fall protection connection device. Background Technology

[0002] Existing fall arrestor connection devices, such as the TW patent certificate No. M506176 "Fall Arrestor Connection Device," include a suspension base, a movable latch, a first control group, and a second control group. In use, the movable latch passes through the first and second holes of the suspension base with the harness, closing the notch in the suspension base. The suspension base is hooked onto the fall arrestor's lifting lugs. The suspension base is equipped with a first control group, and the shaft is equipped with a second control group. The first and second control groups respectively control whether the movable latch can move axially to open the notch in the suspension base.

[0003] While the existing fall arrestor connection device can achieve the goal of opening the notch of the suspension seat by simultaneously operating both the first and second control groups, the user needs to use both hands to operate the first and second control groups at different positions on the suspension seat and the shaft, which is inconvenient to use. Summary of the Invention

[0004] In view of this, the present invention provides a guide groove extending circumferentially in a section of the latch bar, and a pin inserted into the guide groove in the sleeve, thereby restricting the latch bar from needing to rotate during axial movement in order to continue axial movement, allowing the user to operate the latch bar with one hand to open the notch.

[0005] To achieve the above objectives, this utility model provides a fall-prevention connection device, including a hanging base and a movable latch. The hanging base is provided with a hanging rod, which is a U-shaped rod with a recess on its inner side. The recess has a notch, and a first sleeve and a second sleeve are respectively connected to both ends of the hanging rod. The first sleeve and the second sleeve are located opposite each other on both sides of the notch. A pin is connected to the first sleeve, and the inner end of the pin extends into the first sleeve.

[0006] The movable latch includes a latch bar, the centerline of which defines an axis. The latch bar includes a head and a rod portion connected in sequence. The rod portion passes through a first sleeve and a second sleeve in sequence to close the notch. A guide groove is formed on the outer peripheral surface of the rod portion. The guide groove includes a first groove segment, a second groove segment, and a third groove segment connected in sequence from the head towards the rod portion, and allows the inner end of the pin to slide within it. A limiting groove is formed at one end of the first groove segment near the head. The inner end of the pin passes through the limiting groove, and the two circumferential side walls of the limiting groove block the inner end of the pin, restricting the rotational movement of the latch bar. The first groove segment and the third groove segment are offset circumferentially from the rod portion. The second groove segment connects the first groove segment and the third groove segment circumferentially from the rod portion. At least one locking hole is formed on the outer peripheral surface of the rod, and at least one locking member is provided in the at least one locking hole. A portion of the at least one locking member protrudes from the outer peripheral surface of the rod and engages with the inner side of the first sleeve. The head is stopped on the outer side of the first sleeve, and a button is provided on the head to control the protrusion or retraction state of the at least one locking member.

[0007] In use, the movable latch is threaded through the harness, and the suspension bracket is hooked onto the fall arrestor's lugs. When it is necessary to open the notch of the suspension bracket, the user first presses the button on the movable latch, causing at least one locking element to retract and no longer engage with the inside of the first sleeve. Then, the user holds the head of the latch bar with the same hand and pulls the bar out axially, causing the pin to move out of the limiting groove of the first groove segment.

[0008] As the user continues to pull the lever outward along the axial direction, the pin will stop at the end of the first groove opposite to the head, preventing the latch from being pulled out to the left along the axial direction. This avoids the user opening the entire latch at once. The user then rotates the latch, causing the pin to move from the second groove into the third groove near the head. Finally, the user pulls the latch outward until the pin stops at the other end of the third groove opposite to the head, opening the notch of the hanging bracket. The advantage of this invention is that the user can press the button and operate the latch to rotate and move along the axial direction with only one hand, making it convenient for the user to open or close the latch on the hanging bracket, thus improving usability. Attached Figure Description

[0009] Figure 1 This is a perspective view of a preferred embodiment of the present invention.

[0010] Figure 2 This is an exploded view of the preferred embodiment of the present invention.

[0011] Figure 3 for Figure 1 Side view.

[0012] Figure 4 for Figure 3 A cross-sectional view along the 4-4 direction.

[0013] Figure 5 for Figure 4 A diagram illustrating the action of pressing the button.

[0014] Figure 6 This is a diagram illustrating the action of pressing a button.

[0015] Figure 7 This is a schematic diagram illustrating the initial action of withdrawing the latch.

[0016] Figure 8 This is a schematic diagram illustrating the action of rotating the latch.

[0017] Figure 9 A schematic diagram illustrating the action of opening the notch in the hanger to remove the latch.

[0018] Explanation of reference numerals in the attached figures

[0019] 100: Fall arrestor connection device

[0020] 10: Hanging bracket

[0021] 12: Hanging rod

[0022] 121: Crossbar

[0023] 122: Side pole

[0024] 14: First Sleeve

[0025] 141: First latch hole

[0026] 142: Pin Hole

[0027] 143: Pin

[0028] 16: Second sleeve

[0029] 161: Second latch hole

[0030] 20: Movable latch

[0031] 22: Latch

[0032] 221: Head

[0033] 2211: Button slot

[0034] 2212: Locating pin hole

[0035] 222: Pole section

[0036] 2221: Card Hole

[0037] 223: Positioning pin

[0038] 24: Locking Component

[0039] 241: Card

[0040] 242: Control lever

[0041] 2421: Tapered rod section

[0042] 2422: Columnar portion

[0043] 2423: Button

[0044] 2424: Positioning Ditch

[0045] 243: Return spring

[0046] 26: Guiding trench

[0047] 261: First gully section

[0048] 2611: Limiting groove

[0049] 262: Second ditch section

[0050] 2621: Inclined Wall

[0051] 2622: Flat wall

[0052] 263: Third ditch section

[0053] L: Axial direction

[0054] S: concave part

[0055] S1: Gap Detailed Implementation

[0056] To more clearly illustrate this utility model, preferred embodiments are described in detail below with reference to the accompanying drawings. Please refer to... Figures 1 to 5 The image shows a preferred embodiment of the fall arrestor connection device 100 of this utility model. In use, it is fixed to a harness for attachment to the fall arrestor's hooks. The following description of the fall arrestor connection device 100 is based on the user's orientation when the device is attached to the harness, facing the device in both vertical and horizontal directions. The fall arrestor connection device 100 includes a hanging base 10 and a movable latch 20, wherein:

[0057] The hanging base 10 includes a hanging rod 12, a first sleeve 14 and a second sleeve 16. The hanging rod 12 is a U-shaped rod body and includes a crossbar 121 and two side rods 122. The bottom ends of the two side rods 122 are connected to the left and right ends of the crossbar 121. A recess S is formed on the inner side of the crossbar 121 and the two side rods 122. The recess S has a notch S1. The first sleeve 14 is connected to the upper end of the left side crossbar 121, and the second sleeve 16 is connected to the upper end of the right side rod 122. The first sleeve 14 and the second sleeve 16 are located on the left and right sides of the notch S1, respectively. A first latch hole 141 is formed in the first sleeve 14, and a second latch hole 161 is formed in the second sleeve 16. A pin hole 142 is formed on the front side of the outer peripheral surface of the first sleeve 14. A pin 143 is inserted and fixed in the pin hole 142, and the inner end of the pin 143 extends into the first latch hole 141.

[0058] The movable latch 20 includes a latch bar 22 and a locking assembly 24. The centerline of the latch bar 22 defines an axis L. The latch bar 22 includes a head 221 and a rod portion 222 sequentially connected along the axis L. The head 221 is connected to the left end of the rod portion 222. The rod portion 222 is a straight rod extending in a left-right direction and sequentially passes through a first latch hole 141 of the first sleeve 14 and a second latch hole 161 of the second sleeve 16. The left and right ends of the rod portion 222 are respectively disposed within the first latch hole 141 and the second latch hole 161. The rod portion 222 of the latch bar 22 spans between the first sleeve 14 and the second sleeve 16 to close the notch S1, thereby restricting the entry and exit of an object, such as the lug of a fall arrester, through the notch.

[0059] A guide groove 26 is formed on the outer peripheral surface of the rod portion 222. The guide groove 26 includes a first groove segment 261, a second groove segment 262, and a third groove segment 263 sequentially connected from the head 221 toward the rod portion 222. The guide groove 26 allows the inner end of the pin 143 to slide within it, and the first groove segment 261 and the third groove segment 263 are offset circumferentially from the rod portion 222.

[0060] The first groove segment 261 is a long groove extending along the axial direction L. In this preferred embodiment, the length of the first groove segment 261 extending along the axial direction L is shorter than the length of the first sleeve 14 along the axial direction L, and the first groove segment 261 is located inside the first sleeve 14. A limiting groove 2611 is formed at one end of the first groove segment 261 near the head 221. The inner end of the pin 143 passes through the limiting groove 2611, and the two circumferential side walls of the limiting groove 2611 block the inner end of the pin 143, restricting the rotational movement of the latch 22.

[0061] The third groove segment 263 is a long groove extending along the axial direction L, and the length of the third groove segment 263 along the axial direction L is greater than the length of the first groove segment 261 along the axial direction L. In this preferred embodiment, the third groove segment 263 is located between the first sleeve 14 and the second sleeve 16, and the length of the third groove segment 263 along the axial direction L is approximately equal to the length between the first sleeve 14 and the second sleeve 16 along the axial direction L.

[0062] The second groove segment 262 connects the first groove segment 261 and the third groove segment 263 circumferentially along the rod portion 222. Specifically, one end of the second groove segment 262 is connected to the side of the first groove segment 261 circumferentially closer to the third groove segment 263, and the other end of the second groove segment 262 is connected to the side of the third groove segment 263 circumferentially closer to the first groove segment 261. The length of the second groove segment 262 along the axial direction L gradually decreases from the first groove segment 261 towards the third groove segment 263.

[0063] The second groove segment 262 forms an inclined wall 2621 on the side near the head 221, the inclined wall 2621 being inclined relative to the axial direction L; the second groove segment 262 forms a straight wall 2622 on the other side away from the head 221, the straight wall 2622 being perpendicular to the axial direction L. The inclined wall 2621 is used to guide the inner end of the pin 143 to slide from the first groove segment 261 to the third groove segment 263; the inclined wall 2621 is used to block the inner end of the pin 143.

[0064] The head 221 abuts against the outside of the first sleeve 14. A button groove 2211 is formed at the center of the outer end face of the head 221. The button groove 2211 is an elongated groove extending along the axial direction L, penetrating the head 221 and with its inner end extending into the rod portion 222. A locking hole 2221 is formed on both sides of the outer peripheral surface of the rod portion 222, and each locking hole 2221 communicates with the button groove 2211. A positioning pin hole 2212 is formed on one side of the outer peripheral surface of the head 221, and the positioning pin hole 2212 communicates with the button groove 2211. In other preferred embodiments, only one locking hole 2221 may be formed on the outer peripheral surface of the rod portion 222, or three locking holes 2221 may be formed on the outer peripheral surface of the rod portion 222.

[0065] The locking assembly 24 includes two locking pieces 241, an operating lever 242, and a return spring 243. Each locking piece 241 is a ball and is disposed in each of the locking holes 2221. A portion of each locking piece 241 protrudes from each of the locking holes 2221 and engages with the inner side of the first sleeve 14. The operating lever 242 passes through the button slot 2211. The operating lever 242 is a straight rod and has a tapered rod portion 2421 and a columnar portion 2422 sequentially connected along the direction from the head 221 to the rod portion 222.

[0066] The space around the tapered rod portion 2421 is used to accommodate another part of each of the locking members 241. The outer peripheral surface of the columnar portion 2422 abuts against each of the locking members 241, causing a portion of each locking member 241 to be pushed out of each locking hole 2221. The outer end of the operating rod 242 protrudes from the outer end face of the head 221, and a button 2423 is formed at the outer end of the operating rod 242. The return spring 243 is disposed between the inner end of the operating rod 242 and the inner end of the button groove 2211. A positioning groove 2424 is formed on the outer peripheral surface of the portion of the operating rod 242 located inside the head 221. The positioning groove 2424 is a long groove extending along the axial direction L. A positioning pin 223 is engaged with the positioning pin hole 2212. The inner end of the positioning pin 223 extends into the 2212, limiting the range of movement of the head 221 along the axial direction L.

[0067] Please refer to Figure 4 and Figure 5As shown, when the button 2423 is not pressed, the columnar portion 2422 of the operating lever 242 controls each of the latches 241 to protrude from each of the latch holes 2221; when the button 2423 is pressed, the operating lever 242 is driven, causing the columnar portion 2422 to move away from the position abutting against the two latches 241, and causing the conical portion 2421 to move to the inside of the two latch holes 2221, releasing each of the latches 241 so that they can retract into the space around the conical portion 2421. Then, if the user releases the button 2423, the return spring 243 will push the operating lever 242 and the button 2423 back to their original positions. At this time, the columnar portion 2422 of the operating lever 242 returns to a position where a portion of each of the latches 241 can be pushed out of each of the latch holes 2221. In other preferred embodiments, when one or three of the aforementioned locking holes 2221 are formed only on the outer peripheral surface of the rod portion 222, the locking assembly 24 provides one or three locking pieces 241 corresponding to the number of locking holes 2221, and then provides one locking piece 241 in each locking hole 2221, so that each locking piece 241 can perform the function of engaging with the inner side of the first sleeve 14 to fix the axial position of the latch rod 22, and when the user presses the button 2423, each locking piece 241 can retract inward to release the latch rod 22.

[0068] Please refer to Figure 6 As shown, when the fall arrestor connection device 100 of the above-described preferred embodiment of the present invention is used, the rod portion 222 of the latch 22 of the movable latch 20 is passed through the back-mounted safety belt, and the crossbar 121 and the two side bars 122 of the hanging rod 12 can be hooked on the lugs of the fall arrestor. When it is necessary to open the latch 22 and pull the right end of the latch 22 outward to the left to remove the second sleeve 16, the user first presses the button 2423 of the movable latch 20 with his hand, causing each of the locking pieces 241 to retract inward and no longer engage with the inner side of the first sleeve 14.

[0069] Please refer to Figure 6 and Figure 7 As shown, the user then holds the head 221 of the latch 22 with the same hand and pulls the rod portion 222 of the latch 22 to the left along the axial direction L. During this process, the pin 143 moves out of the limiting groove 2611 of the first groove segment 261. As the user continues to pull the rod portion 222 to the left along the axial direction L, the pin 143 will stop at the right end of the first groove segment 261, preventing the latch 22 from being pulled to the left along the axial direction L further, thus preventing the user from opening the entire latch 22.

[0070] Please refer to Figure 7 and Figure 8As shown, at this point, the pin 143 is located at the junction of the first groove 261 and the second groove 262. Although the latch 22 can no longer be pulled outward along the axial direction L, it can rotate. The user then rotates the latch 22, causing the pin 143 to enter the left end of the third groove 263 from the second groove 262 along the inclined wall 2621, the straight wall 2622, or through both. Please refer to... Figure 9 As shown, the user can now pull the latch 22 directly to the left without being obstructed by the pin 143. The latch 22 can be pulled to the left until the pin 143 stops at the right end of the third groove 263, so that the latch 22 is fully opened and the notch S1 of the hanging seat 10 is opened.

[0071] The above description is only a preferred and feasible embodiment of this utility model. Any equivalent changes made by applying the specification and claims of this utility model should be included within the patent scope of this utility model.

Claims

1. A fall arrestor connection device, characterized in that, include: A hanging base is provided with a hanging rod, the hanging rod being a U-shaped rod with a recess on its inner side, the recess having a notch, a first sleeve and a second sleeve being respectively connected to both ends of the hanging rod, the first sleeve and the second sleeve being located opposite each other on both sides of the notch, a pin being connected to the first sleeve, the inner end of the pin extending into the first sleeve; and A movable latch includes a latch bar, the centerline of which defines an axis. The latch bar includes a head and a rod portion sequentially connected. The rod portion sequentially passes through a first sleeve and a second sleeve to close the notch. A guide groove is formed on the outer peripheral surface of the rod portion. The guide groove includes a first groove segment, a second groove segment, and a third groove segment sequentially connected from the head towards the rod portion, and allows the inner end of a pin to slide within it. A limiting groove is formed at one end of the first groove segment near the head. The inner end of the pin passes through the limiting groove, and the two circumferential side walls of the limiting groove provide a stop. The inner end of the pin restricts the rotational movement of the latch; the first groove segment and the third groove segment are offset circumferentially on the rod; the second groove segment is connected between the first groove segment and the third groove segment along the circumferential direction of the rod; at least one locking hole is formed on the outer circumferential surface of the rod, and at least one locking member is provided in the at least one locking hole, a part of the at least one locking member protrudes from the at least one locking hole and engages with the inner side of the first sleeve, the head is stopped on the outer side of the first sleeve, and a button is provided on the head to control the protrusion or retraction state of the at least one locking member.

2. The fall arrestor connection device as described in claim 1, wherein, The first groove segment is a long groove extending along the axial direction, and the third groove segment is a long groove extending along the axial direction; the length of the third groove segment along the axial direction is greater than the length of the first groove segment along the axial direction, and the length of the first groove segment extending along the axial direction is shorter than the length of the first sleeve along the axial direction.

3. The fall arrestor connection device as described in claim 2, wherein, One end of the second groove segment is connected to the side of the first groove segment that is closer to the third groove segment in the circumferential direction, and the other end of the second groove segment is connected to the side of the third groove segment that is closer to the first groove segment in the circumferential direction; the length of the second groove segment along the axial direction gradually decreases from the first groove segment to the third groove segment.

4. The fall arrestor connection device as described in claim 3, wherein, The second groove segment forms an inclined wall on the side near the head, and a straight wall on the other side away from the head; the inclined wall is inclined relative to the axial direction, and the straight wall is perpendicular to the axial direction.

5. The fall arrestor connection device as described in claim 1, wherein, A button groove is formed at the center of the outer end face of the head, the button groove passes through the head and the inner end of the button groove extends into the rod portion; the inner ends of each of the card holes communicate with the button groove; an operating rod passes through the button groove, the operating rod having a conical rod portion and a columnar portion sequentially connected along the direction from the head to the rod portion, the space around the conical rod portion is used to accommodate another part of the at least one card, and the outer peripheral surface of the columnar portion abuts against the at least one card; a return spring is provided between the inner end of the operating rod and the inner end of the button groove, the outer end of the operating rod extends out of the head, and the button is formed at the outer end of the operating rod.

6. The fall arrestor connection device as described in claim 5, wherein, A positioning pin hole is formed on the outer peripheral surface of the head, and the positioning pin hole communicates with the button groove; a positioning groove is formed on the outer peripheral surface of the operating rod, and the positioning groove is a long groove extending along the axial direction of the latch rod; a positioning pin is engaged in the positioning pin hole, and the inner end of the positioning pin extends into the positioning groove.

Images