Positioning pin pneumatic wrench with novel working head structure

Abstract

The utility model discloses a positioning pin pneumatic wrench with a novel working head structure, which belongs to the technical field of pneumatic wrenches and comprises a handle, a machine body is integrally formed at the top end of the handle, one end of the machine body is provided with a working head through an adapter sleeve, an engine component is mounted in the machine body, and the working head is mounted in the engine component. The handle and the working head which are made of nylon materials can be designed in a split mode, so that not only is the whole portable, but also the effective heat insulation, cold insulation and shock absorption effects are achieved. Meanwhile, a large annular spring, a small annular spring and a positioning retainer are utilized at the position of a working head, a star-shaped retainer is matched with a first limiting pin and a second limiting pin correspondingly, and the tail and the middle of the positioning pin can be tightly hooped, so that quick clamping can be achieved; and the slipping phenomenon caused by the fact that a conventional positioning pin pneumatic wrench clamps the positioning pin in a hexagonal fit mode can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of air triggers, and more specifically to a positioning pin air trigger with a new working head structure. Background Art

[0002] The positioning pin gas trigger is a high-end product developed according to the new situation of aviation market demand.

[0003] Based on the above, the inventors have discovered that the existing locating pin air trigger may have certain shortcomings during use. First, the handle of the existing locating pin air trigger is usually made of all-metal, which is heavy, has poor heat insulation effect, and is uncomfortable to hold. At the same time, the position of the reversing knob usually requires both hands to operate, which is very inconvenient to use. In addition, in terms of structure, the existing locating pin air trigger is prone to slipping when tightening and removing the locating pin, which seriously affects its efficiency. In addition, in view of this, the existing structure is studied and improved, and a locating pin air trigger with a new working head structure is provided, in order to achieve the purpose of being more practical. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a positioning pin air trigger with a new working head structure, which can separate the nylon handle and the working head into a separate design, which not only makes the overall light, but also achieves effective heat insulation, cool insulation and shock absorption effects. At the same time, at the working head position, large and small annular springs and positioning retainers, star-shaped retainers and corresponding limit pins 1 and 2 cooperate with each other to tightly clamp the tail and middle parts of the positioning pin, so that in addition to achieving quick clamping, it can also solve the slipping phenomenon caused by the conventional positioning pin air trigger that clamps the positioning pin by hexagonal cooperation.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A positioning pin air trigger with a new working head structure comprises a handle, the top of the handle is integrally formed with a body, one end of the body is equipped with a working head through an adapter set, an engine assembly is installed inside the body, a reducer is installed at the output end of the engine assembly, a hexagonal shaft is arranged on the reducer, a hexagonal sleeve connected with the hexagonal shaft is assembled inside the working head, one end of the hexagonal sleeve is fixedly connected with a small wrench sleeve through an elastic cylindrical pin 1, a positioning retaining frame is assembled inside the small wrench sleeve, a plurality of limit pins 1 distributed in an annular shape and equidistantly arranged inside the positioning retaining frame, and a small annular spring is arranged on the outer periphery of the limit pin 1, one end of the working head is fixedly connected with a large wrench sleeve through an elastic cylindrical pin 2, a star-shaped retaining frame is assembled inside the large wrench sleeve, a plurality of limit pins 2 distributed in an annular shape and equidistantly arranged on the star-shaped retaining frame, and a large annular spring is arranged on the outer periphery of the limit pin 2.

[0009] Furthermore, a sound-absorbing felt is installed between the engine assembly and the reducer, a cross-slot pan head screw is installed inside the fuselage, and a rotation direction button is installed at the upper end of the cross-slot pan head screw.

[0010] Furthermore, the engine assembly includes a cylinder installed inside the fuselage, the interior of the cylinder is equipped with blades, and the driving end of the cylinder is equipped with a rotor, and the rotor is connected to the blades.

[0011] Furthermore, a rear cover is mounted on one end of the exterior of the cylinder, and a front cover is mounted on the other end of the exterior of the cylinder.

[0012] Furthermore, a reversing valve is provided at one end of the cross recessed pan head screw located on the fuselage.

[0013] Furthermore, an air intake valve sleeve is installed inside the handle, an air intake valve stem is installed inside the air intake valve sleeve, and a button valve stem is installed at the end of the air intake valve stem.

[0014] Furthermore, an air connection nozzle is mounted inside the intake valve sleeve at the lower end of the intake valve stem, and a control button is mounted at the end of the button valve stem.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) This solution achieves effective heat insulation, cool insulation and shock absorption through the separate design of the handle and the working head. At the same time, the handle adopts an ergonomic design and can be held in two high and low positions, greatly reducing the risk of workers suffering from trigger finger. The handle is made of nylon, which is light in weight and has a good grip, making it lighter and more comfortable to use.

[0018] (2) In this solution, large and small annular springs and a positioning retainer, a star-shaped retainer and matching limit pins 1 and 2 are arranged at the working head position. Multiple structures cooperate with each other to tightly clamp the tail and middle parts of the positioning pin. This method can not only realize the rapid clamping of the positioning pin, but also solve the slippage phenomenon caused by the conventional positioning pin air trigger that relies on the hexagonal fit to clamp the positioning pin, thereby greatly improving its working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the working head of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the handle position of the utility model;

[0022] Figure 4 It is a schematic diagram of the internal structure of the fuselage of the utility model.

[0023] Description of the numbers in the figure:

[0024] 1. Handle;

[0025] 2. Body;

[0026] 3. Adapter sleeve;

[0027] 4. Working head;

[0028] 5. Engine components; 501. Cylinder; 502. Blade; 503. Rotor; 504. Rear cover; 505. Front cover;

[0029] 6. Reducer;

[0030] 7. Hexagonal axis;

[0031] 8. Hexagonal set;

[0032] 9. Small wrench sleeve;

[0033] 10. Positioning cage;

[0034] 11. Limit pin 1;

[0035] 12. Small annular spring;

[0036] 13. Large wrench sleeve;

[0037] 14. Star-shaped cage;

[0038] 15. Limit pin 2;

[0039] 16. Large ring spring;

[0040] 17. Sound-absorbing felt;

[0041] 18. Cross recessed pan head screws;

[0042] 19. Rotation direction button;

[0043] 20. Intake valve sleeve;

[0044] 21. Intake valve stem;

[0045] 22. Button valve stem;

[0046] 23. Wind mouthpiece;

[0047] 24. Control buttons;

[0048] 25. Reversing valve. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0050] Example:

[0051] See also Figure 1-4 A positioning pin air trigger with a new working head structure includes a handle 1, the top of the handle 1 is integrally formed with a body 2, the overall structure is made of nylon and has the advantage of light weight, one end of the body 2 is equipped with a working head 4 through an adapter sleeve 3, an engine assembly 5 is installed inside the body 2, a reducer 6 is installed at the output end of the engine assembly 5, a hexagonal shaft 7 is arranged on the reducer 6, a hexagonal sleeve 8 connected with the hexagonal shaft 7 is installed inside the working head 4, one end of the hexagonal sleeve 8 is fixedly connected with a small wrench sleeve 9 through an elastic cylindrical pin, and a positioning retainer is installed in the small wrench sleeve 9 10. A plurality of limit pins 11 equidistantly distributed in a ring shape are arranged inside the positioning retaining frame 10, and a small annular spring 12 is arranged on the periphery of the limit pin 11. One end of the working head 4 is fixedly connected with a large wrench sleeve 13 through an elastic cylindrical pin 2. A star-shaped retaining frame 14 is assembled inside the large wrench sleeve 13. A plurality of limit pins 15 equidistantly distributed in a ring shape are arranged on the star-shaped retaining frame 14, and a large annular spring 16 is arranged on the periphery of the limit pin 15. When in use, the handle 1 and the working head 4 adopt a split design, which can effectively achieve the advantages of heat insulation, cool insulation, shock absorption, etc.

[0052] See also Figure 4A sound-absorbing felt 17 is installed between the engine assembly 5 and the reducer 6. A cross-slot pan head screw 18 is installed inside the fuselage 2. A rotation direction button 19 is installed at the upper end of the cross-slot pan head screw 18. When in use, the rotation direction button 19 is installed on the top of the fuselage 2, which can be operated with one hand, making it more convenient to use.

[0053] See also Figure 4 The engine assembly 5 includes a cylinder 501 installed inside the fuselage 2, and blades 502 are installed inside the cylinder 501. The driving end of the cylinder 501 is equipped with a rotor 503, and the rotor 503 is connected to the blades 502.

[0054] See also Figure 4 A rear cover 504 is mounted on one end of the cylinder 501 , and a front cover 505 is mounted on the other end of the cylinder 501 .

[0055] See also Figure 1 and Figure 4 A cross recessed pan head screw 18 is located at one end of the fuselage 2 and a reversing valve 25 is provided.

[0056] See also Figure 3 The handle 1 is provided with an air intake valve sleeve 20, the air intake valve stem 21 is provided inside the air intake valve sleeve 20, the end of the air intake valve stem 21 is provided with a button valve stem 22, the air intake valve sleeve 20 is provided with an air nozzle 23 at the lower end of the air intake valve stem 21, and the end of the button valve stem 22 is provided with a control button 24. When in use, the correct matching of the air passages in the air valve mechanism composed of the engine assembly 5, the air intake valve sleeve 20 and the air intake valve stem 21 is mainly ensured by the key.

[0057] Working principle: When in use, the handle 1 and the working head 4 are respectively connected with a left thread using the adapter sleeve 3. At this time, the engine assembly 5 can be pressed tightly against the rear end surface of the fuselage 2 through the spacer sleeve of the reducer 6, the disc gasket, the bearing in the engine assembly 5, the front cover 505, the rear cover 504, the cylinder 501 and the outer rings of the front and rear rolling bearings. The prescribed clearance is ensured between the two end faces of the engine assembly 5 and the end faces of the front cover 505 and the rear cover 504, so as to ensure that the engine assembly 5 can rotate flexibly and the power will not be reduced due to too large a loose clearance. When the control button 24 is pressed, the air valve mechanism composed of the air intake valve sleeve 20 and the air intake valve stem 21 is opened, and the compressed air is input from the air nozzle 23 through the air valve mechanism and the reversing valve 25 into the engine assembly 5 and drives the rotation; the engine assembly 5 drives the reducer 6, and the hexagonal shaft 7 on the reducer 6 is connected with the hexagonal sleeve 8 on the working head 4 and drives the hexagonal sleeve 8 and the small wrench sleeve 9 to rotate at the same time. At this time, the torque on the engine assembly 5 is transmitted to the small wrench sleeve 9 on the working head 4 through the reducer 6 and the hexagonal shaft 7, so as to tighten the positioning pin;

[0058] Insert the tail of the locating pin into the locating holder 10. Under the action of the small annular spring 12, the tail of the locating pin is clamped by the limit pin 11 on the locating holder 10, and the middle part of the locating pin is clamped by the limit pin 2 15 on the star holder 14 under the action of the large annular spring 16. Then insert the head of the locating pin into the made hole, put the rotation button 19 in the forward position, press the control button 24, and the small wrench sleeve 9 drives the tail of the locating pin to rotate. At this time, the string core clip of the locating pin is firmly locked in the made hole. Pull out the locating pin. At this time, the locating pin is placed in the clamping position to achieve positioning. If the locating pin is to be disassembled, put the rotation button 19 in the reverse position, press the control button 24 to remove the locating pin from the clamping position, and then directly take the locating pin out of the air trigger. The whole operation can not only realize the rapid clamping of the locating pin, but also avoid the locating pin from slipping during the clamping process.

[0059] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0060] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A positioning pin air trigger with a new working head structure, comprising a handle (1), the top of the handle (1) being integrally formed with a body (2), characterized in that: One end of the body (2) is equipped with a working head (4) via an adapter sleeve (3); an engine assembly (5) is installed inside the body (2); a reducer (6) is installed at the output end of the engine assembly (5); a hexagonal shaft (7) is provided on the reducer (6); a hexagonal sleeve (8) connected to the hexagonal shaft (7) is installed inside the working head (4); one end of the hexagonal sleeve (8) is fixedly connected to a small wrench sleeve (9) via an elastic cylindrical pin; a positioning retainer (10) is installed inside the small wrench sleeve (9). The positioning retainer (10) is provided with a plurality of limit pins (11) distributed in an annular shape and at equal intervals, and a small annular spring (12) is provided on the periphery of the limit pins (11); one end of the working head (4) is fixedly connected to a large wrench sleeve (13) via an elastic cylindrical pin (2); a star-shaped retainer (14) is installed in the large wrench sleeve (13); a plurality of limit pins (15) distributed in an annular shape and at equal intervals are provided on the star-shaped retainer (14), and a large annular spring (16) is provided on the periphery of the limit pins (15).

2. A positioning pin air trigger with a new working head structure according to claim 1, characterized in that: A sound-absorbing felt (17) is installed between the engine assembly (5) and the reducer (6); a cross-slot pan head screw (18) is installed inside the fuselage (2); and a rotation button (19) is installed at the upper end of the cross-slot pan head screw (18).

3. A positioning pin air trigger with a new working head structure according to claim 1, characterized in that: The engine assembly (5) comprises a cylinder (501) installed inside the fuselage (2), the interior of the cylinder (501) is equipped with blades (502), the driving end of the cylinder (501) is equipped with a rotor (503), and the rotor (503) is connected to the blades (502).

4. A positioning pin air trigger with a new working head structure according to claim 3, characterized in that: One end of the outside of the cylinder (501) is equipped with a rear cover (504), and the other end of the outside of the cylinder (501) is equipped with a front cover (505).

5. A positioning pin air trigger with a new working head structure according to claim 2, characterized in that: The cross recessed pan head screw (18) is provided with a reversing valve (25) at one end of the machine body (2).

6. A positioning pin air trigger with a new working head structure according to claim 1, characterized in that: An air intake valve sleeve (20) is installed inside the handle (1), an air intake valve stem (21) is installed inside the air intake valve sleeve (20), and a button valve stem (22) is installed at the end of the air intake valve stem (21).

7. A positioning pin air trigger with a new working head structure according to claim 6, characterized in that: An air connection nozzle (23) is mounted inside the air intake valve sleeve (20) at the lower end of the air intake valve stem (21), and a control button (24) is mounted at the end of the button valve stem (22).

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