CN1422730A

CN1422730A - Shock Absorber for Pneumatic Tools

Info

Publication number: CN1422730A
Application number: CN 01142996
Authority: CN
Inventors: 张景顺
Original assignee: 陈秀如
Priority date: 2001-12-06
Filing date: 2001-12-06
Publication date: 2003-06-11

Abstract

A damping device of a pneumatic tool is used for damping an impact unit of the pneumatic tool and comprises a body, a damping device and a damping device, wherein the body is provided with a limiting hole which is provided with a limiting peripheral wall, a containing hole is formed, a blocking part is formed on at least one side of the containing hole, an air channel is communicated to the limiting hole from the periphery of a preset position, and the other limiting hole is arranged on the other side; the movable part is used for installing the impact unit and is provided with a first shaft part movably inserted into one limiting hole of the body, a second shaft part movably inserted into the other limiting hole of the front cover and an installing part positioned between the first shaft part and the second shaft part; a buffer body is provided with a block part, a sleeving inner edge is sleeved on the mounting part of the movable part, an external peripheral edge seals the containing hole of the body, and a blocking part is formed on the side periphery of the blocking part opposite to the body; therefore, the buffer can provide air tightness, and the buffer body can be impacted against the blocking part of the body, thereby forming a better shock absorption effect.

Description

Air tool damping device

Technical field

The present invention is relevant with pneumatic tool, is meant a kind of air tool damping device that is used in especially.

Background technology

Press, existing pneumatic tool, especially pneumatic reciprocating motion type instrument, the vibrations that its impact unit effect produces allow the user produce the injured work injury of hand easily.

Therefore, promptly have various design and the products that slow down vibrations to keep up a steady flow of on the market, yet its structure is nothing more than members such as use coil springs, the effect of its damping is unsatisfactory, coefficient of elasticity is difficult for grasping, and because the factor of dither, this class A of geometric unitA is very easy to damage.

Because above-mentioned shortcoming, the creator be hammer away and the air tool damping device of the present invention.

Summary of the invention

Main purpose of the present invention is promptly providing a kind of air tool damping device, and it can effectively reduce air tool impact endurance test shock power.

An of the present invention purpose more providing a kind of air tool damping device, and it can conveniently make up and dismantle its member.

A further object of the present invention is providing a kind of air tool damping device again, and its installing firmly has durability.

Edge is, take off purpose for before reaching, a kind of air tool damping device provided by the present invention, be can be for the usefulness of an air tool impact unit damping, this damping device includes: a body has a limiting holes and offers formation restriction perisporium, and a containing hole forms a stopper at least one side of this containing hole, one airway passes to this limiting holes by the precalculated position periphery, and another limiting holes is located at other side; One movable part is for this impact unit of installing, has the movable limiting holes that is inserted in this body of a first axle part, movable another limiting holes that is inserted in this protecgulum of a second axle part, and an installation site is between this first axle part and the second axle part; One buffer body has a portion, and a socket inner edge is socketed on the installing department of this movable part, and an external periphery seals the containing hole of this body, and in the stopper side week of this body forms a stopper relatively.

Wherein this body is to make up a protecgulum separably.

Wherein this stopper is to be located at this protecgulum.

Wherein this another limiting holes is also to be formed at this protecgulum.

Wherein the stopper of this body is to be located at the rear end of this containing hole.

Wherein the stopper of this body is to be located at the front end of this containing hole.

Wherein the stopper of this body is to be located at the front end and the rear end of this containing hole simultaneously.

Wherein also include one second buffer body and be located at least one limiting holes of this body, and the retaining that can be used as this movable part supports buffering.

Wherein this body is to cut apart at least two with center line to combine.

Wherein the installing department of this movable part is to be an installing circular groove.

Thus, this buffer body can provide air-tightness, and this buffer body stopper offset of this body relatively, has preferable damping effect and form.

Description of drawings

More understand characteristics of the present invention and reached effect by making, lift following preferred embodiment and conjunction with figs. now and be described as follows, wherein;

Fig. 1 is the side-looking combination section of a preferred embodiment of the present invention;

Fig. 2 is the side-looking decomposing section of a preferred embodiment of the present invention.

Fig. 3 is the one actuator state figure that is same as Fig. 1, shows that its buffer body retaining is butted on the position of this body;

Fig. 4 is another actuator state figure that is same as Fig. 1, shows that its buffer body retaining is butted on the position of this protecgulum;

Fig. 5 is the side-looking combination section of another preferred embodiment of the present invention, shows that its antetheca is provided with one second buffer body.

The specific embodiment

See also Fig. 1, a preferred embodiment of the present invention provides air tool damping device, is to make to slow down hand is produced shaking force for the usefulness of an impact unit 8 as damping.

Wherein, this impact unit 8 is to include an impact body 81, one lower valve bases 82, and a upper valve base 83.

As shown in Figure 2, this damping device includes:

One body 10 has an installing department 11, and a grip part 12, one limiting holes 13 is offered and is formed restriction perisporium 131, one containing holes 14, and it is scalene cone to form a stopper 15, and one screw hole 16 be located at front openings, an airway 17 passes to this limiting holes 13 by the precalculated position periphery.

One protecgulum 20, has a lid 21, but a threaded shank 22 spiral shells are located at the screw hole 16 of this body 10, one outer retaining edge 23, one front tube portion, 24, one limiting holes 25 are offered and are formed the wear reciprocal start of restriction perisporium 251, one movable spans 26 for this impact unit 8, and form one and hold shoulder 27, one stoppers 28 also to be inside oblique cone poroid.

One movable part 30, have a first axle part 31 movable limiting holes 13 that are inserted in this body 10, one the second axle part, the 32 movable limiting holes 25 that are inserted in this protecgulum 20, each and the monolateral 0.2 millimeter space of having an appointment that is separated by, hole, and one installing circular groove 33 be in the stage casing than path and two sides and also be oblique cone shape, a underseal portion 34, one installation holes 35, one screw 36, and a passage 37 is by the limiting holes 13 of this installing duct to this body 10.

One buffer body 40, having a portion 41 is foaming bodies that rubber and plastic glue is shaped, a socket inner edge 42, one external peripheries 43, and retaining supports the stopper 15 of this body 10 and the stopper 28 of protecgulum 20 when respectively forming a stopper 44,45 respectively for displacement two side weeks.Wherein, this buffer body 40 is airtight, and has oil resistant and resistance to water, and is replaceable when aging or damage.

The operation of present embodiment and start situation are described as follows now:

During combination, earlier this buffer body 40 is sheathed on the installing circular groove 33 of this movable part 30 with its socket inner edge 42, and makes the two combination; Moreover, this movable part 30 is inserted in the limiting holes 13 of this body 10 with its first axle part 31, this buffer body 40 promptly is positioned at containing hole 14 positions of this body 10 relatively simultaneously; At last, this protecgulum 20 is located at the screw hole 16 of this body 10 with its threaded shank 22 spiral shells, can finishes combination kenel of the present invention.

Wherein, the socket inner edge 42 of this buffer body 40 and external periphery 43 are to be close to the installing circular groove 33 of this movable part 30 and the limiting holes 13 restriction perisporiums 131 of body 10 respectively, and can reach airtight effect.

The piece portion 41 of this buffer body 40 itself then has the hollow or air bladder of foaming in addition, and has better distortion and buffering effect.

Fig. 3 is the one actuator state figure that is same as Fig. 1, shows that its buffer body retaining is butted on the position of this body; Wherein, this movable part 30 is to be subjected to this impact unit 8 start backward, thereby this buffer body 40 of interlock dashes the stopper 15 of low this body 10 with its stopper 44, and can reach the effect of an axial end damping; In addition, the limiting holes 13 of this body 10 also forms the cushioning effect that air chamber also can provide part.

Rightabout, Fig. 4 is same as another actuator state of Fig. 1 figure, show that its buffer body retaining is butted on the position of this protecgulum, wherein, this movable part 30 is to be subjected to this impact unit 8 start forward, thereby this buffer body 40 of interlock is with the stopper 28 of this protecgulum 20 of stopper 45 offsets of its front side, and can reach the effect of axial other end damping.

Another preferred embodiment of the present invention, as shown in Figure 5, it is identical substantially with last embodiment, only increased the limiting holes 25 that one second buffer body 50 is installed in this protecgulum 20, and can work as this movable part 30 forward during start correspondence compress this second buffer body 50, and reach preliminary cushioning effect, especially under the situation that sky is beaten.

In addition, body of the present invention is to can be one to separate the kenel of combination with handle, cooperates multiple different handles and can reach, and provides this body can use toolroom machine such as lathe to add the convenience in man-hour.

In addition, this protecgulum is to join with body among the present invention, and body is to make up it along its center line mode of 2 half of making, no matter be 2 half combinations up and down, or about 2 half combinations.

By above embodiment explanation, it is as follows to conclude characteristics of the present invention:

1. the air tool damping device of the present invention, it utilizes the retaining that cooperates of this buffer body and body or protecgulum to support, and can reach best damping effect.

2. the air tool damping device of the present invention, the effect of its buffer body can be reached two-way function of use simultaneously.

3. the air tool damping device of the present invention, the combination of its buffer body and movable part and body and changeing all can reach most convenient.

4. the air tool damping device of the present invention, the combination of its buffering and start can be carried from preferable durability and durability.

In sum, the air tool damping device of the present invention, every characteristics of taking off before having and reached and respectively create purpose, its unitary construction meets the important document of patent of invention really at first creating and having progressive and practicality effect.

Claims

1. A damping device of a pneumatic tool is used for shock absorption of an impact unit of a pneumatic tool, and it is characterized in that the damping device includes:

A main body, with a restricting hole opened to form a restricting peripheral wall, an accommodating hole, a stopper is formed on at least one side of the accommodating hole, an air passage leads from the outer periphery of a predetermined position to the restricting hole, and another restricting hole is arranged on the other side side;

A movable part is used for installing the impact unit, and has a first shaft part that can be movably inserted in a restriction hole of the body, a second shaft part that can be movably inserted in another restriction hole of the front cover, and a mounting part is located between the first shaft part and the second shaft part;

A buffer body has a part, a sleeved inner edge is sleeved on the installation part of the movable part, an outer peripheral edge seals the accommodating hole of the body, and a stop part is formed on the side of the stop part opposite to the body;

Therefore, the buffer can provide airtightness, and the buffer body can collide against the blocking portion of the main body, thereby forming a better shock-absorbing effect.

2. The shock absorbing device of an air tool according to claim 1, wherein the main body is detachably combined with a front cover.

3 . The shock absorbing device of an air tool according to claim 2 , wherein the blocking portion is disposed on the front cover. 4 .

4. The shock absorbing device of an air tool according to claim 2, wherein the other restricting hole is also formed in the front cover.

5 . The shock absorbing device of an air tool according to claim 1 , wherein the stop portion of the body is disposed at the rear end of the receiving hole. 5 .

6 . The shock absorbing device of an air tool according to claim 1 , wherein the stop portion of the body is disposed at the front end of the receiving hole. 7 .

7 . The shock absorbing device of an air tool according to claim 1 , wherein the stop portion of the body is simultaneously provided at the front end and the rear end of the accommodating hole. 8 .

8 . The shock absorbing device of an air tool according to claim 1 , further comprising a second buffer body disposed in at least one limiting hole of the main body, which can be used as a buffer against the movable element. 9 .

9 . The shock absorbing device of an air tool according to claim 1 , wherein the main body is composed of at least two parts divided by a center line. 10 .

10 . The shock absorbing device of an air tool according to claim 1 , wherein the mounting portion of the movable element is a mounting ring groove. 11 .