TWI651063B - Sliding sleeve safety hook structure - Google Patents

Abstract

The utility model relates to a sliding sleeve type safety hook structure, comprising: a hook body, an opening is arranged on one side, a first end and a second end which are flat in shape are arranged at two ends of the opening, and a shaft hole penetrating through the side; The connecting rod is provided with a first rod end and a second rod end, the second rod end is detachable from the second end of the hook body, and the first rod end is provided with a pivoting hole penetrating through the side The connecting rod is pivotally disposed at the first end of the hook body; a link rebounding element is disposed between the hook body and the first rod end of the connecting rod, so that the connecting rod is The second rod end normally elastically closes the opening to the second end of the hook body; a shaft rod, the shaft rod is fixed to the shaft hole through the pivot hole, so as to pivot the first rod end of the connecting rod a first end of the hook body, and at least one end of the shaft is provided with a control head, the control head is provided with a wide portion and a narrow portion corresponding to the opening direction of the hook body; a sliding sleeve is sleeved on the connection The rod is externally provided for linear sliding, and the sliding sleeve is provided with a sleeve hole for the connecting rod for the connecting rod, and the control head corresponding to the shaft after the sleeve is sleeved a control hole having a narrow hole extending for a period of time and then connecting a wide hole for the narrow portion to pass through the wide portion, the wide hole for the wide portion to rotate; and a sliding sleeve back The elastic element is sleeved between the connecting rod and the sliding sleeve for pushing the sliding sleeve normally to the second end of the hook body.

Description

Sliding sleeve safety hook structure

The present invention relates to a safety hook structure, and more particularly to a positional improvement design for a shaft of a safety hook opening.

The current mountaineering hook and safety hook have a shaft that can be controlled to open and close in the opening of the hook body, and the shaft is controlled by elastic torque, and the shaft is prevented from being unintentionally opened due to the collision. There is a rotating sleeve outside, such as the lock hook ring reinforcement structure of the Chinese Patent Publication No. M396889. When the rotation is used to open, when the shaft swings, there must be a design to limit the rebound of the sleeve. When the shaft completely closes the opening of the hook body, the sleeve will rebound to avoid structural failure. The design of the rotation is because the mountaineering hook is controlled by one hand, and the rotating sleeve has to be pulled by the shaft. Design, operation is extremely inconvenient.

Therefore, how to use only the sliding structure and the shaft to swing, there is a limit to the design of the rebound of the sleeve.

A two-stage safety hook with a sleeve outside the shaft is known, and the sleeve is designed to rotate. The rotary sleeve has to be designed to move the shaft, which is unfavorable for one-hand operation. Therefore, it is necessary to develop a shaft. There is a sleeve outside the rod, and there is also a design to limit the rebound after the sleeve is opened. The sleeve will only rebound when the shaft completely closes the opening of the hook body.

The sliding sleeve type safety hook structure of the present invention comprises: a hook body having an inner space therein; an opening is formed on one side of the inner space, and the first end and the second end are flat at both ends of the opening, and a shaft hole penetrating from the side; a connecting rod is designed to match the opening length of the hook body, and is provided with a first rod end and a second rod end, and the second rod end is detachable from the second end of the hook body The first rod end is provided with a pivoting hole penetrating from the side, the connecting rod is pivotally disposed at the first end of the hook body, so that the connecting rod is at the first rod end The shaft center can be opened; a link rebounding element is disposed between the hook body and the first rod end of the connecting rod, so that the second rod end of the connecting rod is normally closed to the second end of the hook body The shaft is fixed to the shaft hole through the pivot hole to pivot the first rod end of the connecting rod to the first end of the hook body, and the shaft is provided at least at one end thereof Controlling the head, the control head is provided with a wide portion and a narrow portion corresponding to the opening direction of the hook body; a sliding sleeve is sleeved on the connection The external supply generates a linear slip, and a sleeve hole is formed in the center of the sliding sleeve for the connecting rod, and a control hole is arranged on the control head corresponding to the shaft after the sleeve is set, and the control hole is a control hole After the narrow hole extends for a period of time, a wide hole is connected, the narrow hole is for the narrow portion to pass through the wide portion, the wide hole is for the wide portion to rotate; and a sliding sleeve resilient member is sleeved on the connecting rod Between the sliding sleeve, the sliding sleeve is normally pushed toward the second end of the hook body.

The sliding sleeve of the present invention can linearly slide open or close the second end of the hook body, and after the opening, after pulling the connecting rod, there is also a design for restricting the rebounding of the sliding sleeve after opening, only in the connecting rod When the opening of the hook body is completely closed, the sliding sleeve will rebound and re-limit the second end to achieve a firm closure, which is more convenient and convenient for one-hand operation.

In the following, the preferred embodiment of the present invention will be described in detail with reference to the drawings:

As seen from the first, second and third figures, the sliding sleeve safety hook structure of the present invention comprises:

A hook body 10 has a C shape, and has an internal space 11 therein. The inner space 11 has an opening 12 at one side thereof. The C-shaped opening 12 is provided with a flat first end 13 and a second end. 14. The first end 13 is provided with an elastic coupling groove 131 and a shaft hole 132 penetrating from the side.

A connecting rod 20 is a square column shape and is designed to fit the length of the opening 12 of the hook body 10. The first rod end 21 and the second rod end 22 are provided, and the second rod end 22 and the second end of the hook body 10 The detachable fastening limit of the first rod end 21 is provided with a notch 211 and a pivot hole 212 extending through the side. The connecting rod 20 is pivotally mounted on the hook body 10 by the first rod end 21 The first end 13 of the connecting rod 20 is pivoted about the first rod end 21 so that the second rod end 22 swings between the inner space 11 and the second end 14 to open the opening 12, and the connecting rod 20 is extended. A spring slot 23 is defined in the direction in which the first rod end 21 and the second rod end 22 extend. The connecting rod 20 is further provided with a receiving hole 24 . The second rod end 22 defines an engaging groove 221 and the hook body 10 . The second end 14 is shaped to meet the snap limit.

a link rebounding element 30 is disposed between the elastic coupling groove 131 of the hook body 10 and the first rod end 21 of the connecting rod 20, so that the second rod end 22 of the connecting rod 20 is normally directed to the hook body 10 The second end 14 elastically closes the opening 12.

a shaft 40 fixed to the shaft hole 132 through the pivot hole 212 to pivot the first rod end 21 of the connecting rod 20 to the first end 13 of the hook body 10, and the shaft At least one end of the rod 40 is provided with a control head 41 which is provided with a wide portion 411 and a narrow portion 412 which corresponds to the direction of the opening 12 of the hook body 10.

a sliding sleeve 50 is disposed on the outside of the connecting rod 20 for linear sliding, and the sliding sleeve 50 is provided with a sleeve hole 51 for engaging the connecting rod 20 at the center for the connecting rod 20 to be sleeved. The control head 41 corresponding to the shaft 40 is provided with a control hole 52. The control hole 52 is extended by a narrow hole 521 and connected to a wide hole 522. The narrow hole 521 can be used for the narrow portion 412. The wide portion 411 passes through the wide hole 522 for rotating the wide portion 411. The sliding sleeve 50 is provided with a pressing hole 53 smaller than the receiving hole 24 at a position corresponding to the receiving hole 24, and corresponds to the spring groove 23. A pin hole 54 is formed to engage with a latching pin 55. The first end 13 is provided with a notch 56. The sliding sleeve 50 can be separated from the second end 14 of the hook body 10 or the second end of the hook body 10. 14.

a sliding sleeve resilient element 60 is sleeved between the connecting rod 20 and the sliding sleeve 50 for pushing the sliding sleeve 50 normally to the second end 14 of the hook body 10, and the sliding sleeve resilient element 60 is The spring groove 23 penetrates into the spring groove 23 and on the sliding sleeve resilient element 60.

A safety switch 70 includes a spring 71 and two card beads 72. The spring 71 is disposed in the receiving hole 24, and the two ball beads 72 are located in the receiving holes 24 on both sides of the spring 71. At the second end 14 of the hook body 10, the two card beads 72 are simultaneously located in the pressing hole 53.

The use of the structure is first viewed from the fourth and fifth figures. When the bead 72 is located in the pressing hole 53, the sliding sleeve 50 cannot be slid toward the first rod end 21, and the pressing is performed. After the card bead 72 is removed, the sliding sleeve 50 is unstrained and can be linearly slid toward the first rod end 21 to compress the sliding sleeve resilient element 60. Sliding sleeve 50 and leaving the second end 14 of the hook body 10, and then viewed from the sixth and seventh figures, the control head 41 of the shaft 40 is re-entered into the wide hole through the narrow hole 521 by the narrow portion 412. 522. At this time, the connecting rod 20 can pivotally open the opening 12 by pivoting the shaft 40. When the control head 41 rotates in the wide hole 522, the narrow portion 412 cannot align the narrow hole 521. The narrow hole 521 is limited by the wide portion 411, so the sliding sleeve 50 is not pushed back by the sliding sleeve resilient member 60, as shown in the eighth figure; when the connecting rod 20 is returned to completely close the opening 12, The narrow portion 412 realigns the narrow hole 521. As shown in the ninth figure, the sliding sleeve 50 is again pushed back by the sliding sleeve resilient member 60 to close the second end 14 of the hook body 10, such as Figure 10 shows.

With the above structure, the sliding sleeve 50 can linearly slide open or close the second end 14 of the hook body 10, and after the opening, after the connecting of the connecting rod 20, there is also a limit to rebound after the sliding sleeve 50 is opened. It is designed that the sliding sleeve 50 will rebound to re-limit the second end 14 only when the connecting rod 20 completely closes the opening 12 of the hook body 10 to achieve a positive closure.

10‧‧‧ hook body

11‧‧‧Internal space

12‧‧‧ openings

13‧‧‧ first end

131‧‧‧Flexible joint groove

132‧‧‧Axis hole

14‧‧‧ second end

20‧‧‧ linkage

21‧‧‧first rod end

211‧‧‧ Missing slot

212‧‧‧ pivot hole

22‧‧‧Second rod end

221‧‧‧ fit slot

23‧‧‧Spring slot

24‧‧‧ accommodating holes

30‧‧‧Connector rebound element

40‧‧‧ shaft

41‧‧‧Control head

411‧‧‧ Wide Department

412‧‧‧narrow

50‧‧‧Sleeve

51‧‧‧Close hole

52‧‧‧Control hole

521‧‧‧Narrow hole

522‧‧‧ wide hole

53‧‧‧Press hole

54‧‧‧ pinhole

55‧‧‧Latch

56‧‧‧ Missing slots

60‧‧‧Sleeve resilient element

70‧‧‧Safety switch

71‧‧‧ Spring

72‧‧‧ card beads

The first figure is a three-dimensional combination of the present invention. The second drawing is an exploded perspective view of the present invention. The third figure is a sectional view of the combination of the present invention. The fourth figure is a partial cross-sectional view of the safety switch of the present invention. Figure 5 is a partial cross-sectional view of the safety switch of the present invention. The sixth figure is a schematic view of the slide sleeve of the present invention before it is pulled down. The seventh figure is a schematic diagram of the sliding down of the sliding sleeve of the present invention. The eighth figure is a pivotal schematic view of the connecting rod of the present invention. The ninth drawing is a schematic diagram of the pivotal return of the connecting rod of the present invention. The tenth figure is a schematic diagram of the rebound of the sliding sleeve of the present invention.

Claims (7)

A sliding sleeve type safety hook structure comprises: a hook body having an inner space therein; an opening is arranged on one side of the inner space, and the first end and the second end are flat at both ends of the opening, and a shaft hole penetrating through the side; a connecting rod is designed to match the opening length of the hook body, and is provided with a first rod end and a second rod end, and the second rod end is detachably engaged with the second end of the hook body The first rod end is provided with a pivoting hole penetrating from the side, the connecting rod is pivotally disposed at the first end of the hook body, so that the connecting rod is centered on the first rod end The core can open the opening; a link rebounding element is disposed between the hook body and the first rod end of the connecting rod, so that the second rod end of the connecting rod is normally closed to the second end of the hook body The shaft is fixed to the shaft hole through the pivot hole to pivot the first rod end of the connecting rod to the first end of the hook body, and the shaft is provided at least at one end thereof Controlling the head, the control head is provided with a wide portion and a narrow portion corresponding to the opening direction of the hook body; a sliding sleeve is sleeved on The outer part of the connecting rod is provided with linear sliding, and a sliding hole is arranged in the center of the sliding sleeve for the connecting rod, and a control hole is arranged on the control head corresponding to the shaft after the sleeve is set, the control hole is provided After extending a narrow hole for a period of time, a wide hole is connected, the narrow hole is available for the narrow portion to pass through the wide portion, the wide hole is for the wide portion to rotate, and the sliding sleeve can be separated from the second end of the hook body Or sleeve the second end of the hook body; and a sliding sleeve rebounding element is sleeved between the connecting rod and the sliding sleeve for pushing the sliding sleeve normally to the second end of the hook body. According to the sliding sleeve type safety hook structure of the first aspect of the invention, the first end of the hook body is provided with an elastic coupling groove, and the link rebounding element is disposed in the elastic coupling groove. According to the sliding sleeve type safety hook structure of the first aspect of the patent application, the connecting rod has a square column shape, and the sliding sleeve has a square column shape. According to the sliding sleeve type safety hook structure of claim 1, the first rod end is provided with a missing slot, and the sliding sleeve is provided with a missing slot at the first end. According to the sliding sleeve type safety hook structure of claim 1, the side of the connecting rod extends from the first rod end and the second rod end to a spring slot, and the sliding sleeve corresponds to the spring slot. The pin hole and the engaging pin are inserted into the spring groove, and the sliding element is inserted into the spring groove, and the pin penetrates into the spring groove and is on the sliding element. The sliding sleeve type safety hook structure according to claim 1 further includes a safety switch, wherein the safety switch comprises a spring and two card beads, and the connecting rod is further provided with a receiving hole laterally, and the sliding sleeve corresponds to a position of the receiving hole is provided with a pressing hole smaller than the receiving hole, the spring is disposed in the receiving hole, and the two card beads are located in the receiving hole on both sides of the spring, when the sliding sleeve is in the hook At the second end of the body, the two card beads are simultaneously located in the pressing hole. According to the sliding sleeve type safety hook structure of claim 1, the second rod end is provided with an engaging groove to match the shape of the second end of the hook body to reach the fastening limit.