CN209755053U - Pincers for installing safety pin of oxygen generator - Google Patents

Abstract

The utility model discloses a pincers are used in installation of oxygen generator safety pin, including first handle and the second handle that the middle part is passed through articulated pin connection, be equipped with first head at the tip of first handle, be equipped with the second head at the tip of second handle, be equipped with the U type that can pass the spring retraction pole respectively on first head and second head and keep away the dead slot, be equipped with the holding on the second head start the spacing groove of round pin. The utility model has the advantages that: the structure has the advantages of simple structure, convenient operation, safety and reliability, and can limit the starting pin when the spring retraction rod is pulled out, thereby improving the reliability of the installation of the safety pin.

Description

Pincers for installing safety pin of oxygen generator

Technical Field

The utility model relates to a pincers are used in installation of aircraft cabin oxygen generator safety pin.

Background

In order to ensure that oxygen is supplied to the cabin of the aircraft in an emergency, a special oxygen generator is arranged in the aircraft, and when emergency oxygen supply is needed, the oxygen is released by triggering chemical substances in the oxygen generator to react. Referring to fig. 1, a spring retraction rod 2 extending to the outside of a body 1 is provided on the body 1 of the oxygen generator, and the spring retraction rod 2 always keeps a tendency to rebound back into the body 1; the spring retraction lever 2 is provided with a through hole 3 penetrating in the radial direction, a head segment 5 of a start pin 4 is inserted into the through hole 3, and the other end of the start pin 4 is provided with a pull rope 6. When the head section 5 of the actuating pin 4 is inserted into the through hole 3, the spring retraction lever 2 is stopped by the head section 5 and cannot enter the body 1, at which time the oxygen generator remains ready for use. When the head section 5 of the starting pin 4 is pulled out of the through hole 3 through the pull rope 6, the spring retraction rod 2 retracts into the main body 1 under the action of elasticity, and chemical substances in the main body 1 are excited to react to release oxygen. Due to the one-time chemical reaction, when the actuating pin 4 is accidentally pulled out, the oxygen generator releases oxygen, which causes serious waste and even danger. For avoiding this kind of occurence of failure, still be equipped with the second perforation 7 that radially link up on the spring retraction lever 2 that is close to main part 1 one side, and insert a safety pin 8, carry on spacingly to spring retraction lever 2, only after safety pin 8 was extracted, pull out and start round pin 4 and just can release spring retraction lever 2 to play the guard action.

since the second through hole 7 is located on the side of the spring retraction lever 2 close to the main body 1, the installation of the safety pin 8 requires pulling out the spring retraction lever 2 so that the second through hole 7 is exposed before the safety pin 8 can be inserted. In the prior art, in order to prevent the actuating pin 4 from being pulled out accidentally, one person needs to use a pliers to clamp the spring retraction rod 2 and pull the spring retraction rod outwards so as to expose the second through hole 7, and another person needs to press the actuating pin 4 in the through hole 3 at the same time to limit the actuating pin 4 from slipping accidentally. Therefore, the operation of installing the safety pin is troublesome and is prone to accidents.

Disclosure of Invention

The utility model aims at providing a pair of pliers for installing safety pins of an oxygen generator, which is convenient to operate, safe and reliable.

The technical solution of the utility model is that: the utility model provides an oxygen generator safety pin installation is with pincers, includes that the middle part is through first handle and the second handle of hinge pin connection, is equipped with first head at the tip of first handle, is equipped with the second head at the tip of second handle, is equipped with the U type that can pass the spring retraction lever on first head and the second head respectively and keeps away the dead slot, is equipped with the spacing groove of holding on the second head the start pin.

First handle and second handle are through articulated connection, two heads can be used for centre gripping spring retraction lever and extract, the spacing inslot at the second head can be placed to the start pin, can be fixed spacingly with the start pin when pulling out spring retraction lever like this, avoid appearing the situation that the start pin was by unexpected slippage, at the in-process of pulling out spring retraction lever installation safety round pin like this, the start pin is spacing all the time, and the pulling force of second head can be used in on start pin and spring retraction lever simultaneously, the contact surface that has increased the effect, the shearing force of drawing to spring retraction lever has been reduced, single installation that can realize the safety round pin, and convenient operation is reliable.

The first head comprises a connecting section and a curved section which are connected with the first handle, the fixture between the curved section and the connecting section is 15 degrees, and the U-shaped clearance groove is located on the curved section. The included angle exists between the curved surface section and the connecting section, so that the curved surface section can be better attached to the surface of the main body, the action surface of the application force is increased, the moment is more easily formed, and the operation is convenient.

the second head is provided with a horizontal extending part, and the limiting groove is positioned in the extending part. The extension part can increase the contact area with the starting pin, so that the stress is more uniform.

And a rope threading hole for a pull rope to penetrate is formed in the bottom of the limiting groove of the second head. The pull rope can be conveniently penetrated.

The hinge pin is sleeved with a spring, and two ends of the spring are respectively connected with the first handle and the second handle. The spring is used for forming tension between the two handles, so that the handles are convenient to restore.

The utility model has the advantages that: the structure has the advantages of simple structure, convenient operation, safety and reliability, and can limit the starting pin when the spring retraction rod is pulled out, thereby improving the reliability of the installation of the safety pin.

Drawings

FIG. 1 is a schematic illustration of a prior art installed shear pin;

FIG. 2 is a schematic structural diagram of an embodiment of the present invention;

FIG. 3 is a schematic view of the embodiment of the present invention illustrating the installation of the safety pin;

1. The safety handle comprises a main body, 2, a spring retraction rod, 3, a through hole, 4, a starting pin, 5, a head section, 6, a pull rope, 7, a second through hole, 8, a safety pin, 10, a first handle, 11, a second handle, 12, a first head, 13, a second head, 14, a U-shaped clearance groove, 15, a U-shaped clearance groove, 16, a limiting groove, 17, a connecting section, 18, a curved surface section, 19, a rope penetrating hole, 20, a hinge pin, 21, a spring, 22 and an extending part.

Detailed Description

Example (b):

Referring to fig. 2-3, the forceps for installing the safety pin of the oxygen generator comprises a first handle 10 and a second handle 11 which are connected through a hinge pin 20 at the middle parts, wherein a first head 12 is arranged at the end part of the first handle 10, a second head 13 is arranged at the end part of the second handle 11, U-shaped clearance grooves 14 and 15 capable of penetrating through a spring retraction rod 2 are respectively arranged on the first head 12 and the second head 13, and a limiting groove 16 for accommodating the starting pin 4 is arranged on the second head 13. The first head 12 comprises a connecting section 17 connected with the first handle 11 and a curved section 18, the clamp between the curved section 18 and the connecting section 17 is 15 degrees, and the U-shaped clearance groove 14 is positioned on the curved section 18. A horizontal extension 22 is provided on the second head 13, and the limit groove 16 is located in the extension 22. The bottom of the limit groove 16 is provided with a rope threading hole 19 for the rope 6 to pass through. A spring 21 is sleeved outside the hinge pin 20, and two ends of the spring 21 are respectively connected with the first handle 11 and the second handle 12.

When the safety pin is installed, 1, firstly, the U-shaped clearance groove 14 on the first head 12 of the first handle 10 penetrates through a convex part on the oxygen generator, the curved surface section 18 is tightly attached to the surface of the main body 1, 2, then the starting pin 4 is placed in the limiting groove 16 in the horizontal extension part 22 of the second head 13 at the end part of the second handle 11, and the free end of the pull rope 6 penetrates out through the rope penetrating hole 19; 3. holding the first handle 10 and the second handle 11 with one hand, so that the second head 13 is opened outwards, and driving the spring retraction rod 2 to be pulled outwards through the starting pin 4 until the second through hole 7 is exposed; 4. the palm pressure on the handles is kept unchanged, the other hand can insert the safety pin 8 into the second through hole 7, 5 and then slowly release the two handles, and the spring retraction rod 2 retracts towards the inside of the main body 1 until the safety pin is tightly attached to the main body 1; 6. the mounting operation of the safety pin can be realized by taking the starting pin 4 out of the limiting groove 16 and removing the pliers. The removal of the shear pin may be the same as described above.

The above detailed description is specific to one possible embodiment of the present invention, and the embodiment is not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention are intended to be included within the scope of the present invention.

Claims (5)

1. The utility model provides an oxygen generator safety pin installation is with pincers for spacing start pin, its characterized in that: the handle comprises a first handle and a second handle which are connected through a hinge pin at the middle part, wherein a first head part is arranged at the end part of the first handle, a second head part is arranged at the end part of the second handle, U-shaped clearance grooves capable of penetrating through a spring retraction rod are respectively arranged on the first head part and the second head part, and a limit groove for accommodating the starting pin is arranged on the second head part.

2. The oxygen generator safety pin installation clamp of claim 1, wherein: the first head comprises a connecting section and a curved section which are connected with the first handle, the fixture between the curved section and the connecting section is 15 degrees, and the U-shaped clearance groove is located on the curved section.

3. The oxygen generator safety pin installation clamp as claimed in claim 1 or 2, wherein: the second head is provided with a horizontal extending part, and the limiting groove is positioned in the extending part.

4. the oxygen generator safety pin installation clamp as claimed in claim 3, wherein: and a rope threading hole for a pull rope to penetrate is formed in the bottom of the limiting groove of the second head.

5. The oxygen generator safety pin installation clamp as claimed in claim 3, wherein: the hinge pin is sleeved with a spring, and two ends of the spring are respectively connected with the first handle and the second handle.