CN202690372U

CN202690372U - Piston of inflating pump

Info

Publication number: CN202690372U
Application number: CN 201220339695
Authority: CN
Inventors: 王伟吉
Original assignee: TA TA ELECTRONICS INDUSTRY (SHENZHEN) Co Ltd
Current assignee: TA TA ELECTRONICS INDUSTRY (SHENZHEN) Co Ltd
Priority date: 2012-07-13
Filing date: 2012-07-13
Publication date: 2013-01-23
Anticipated expiration: 2022-07-13

Abstract

The utility model relates to a piston of an inflating pump. The piston mainly comprises a piston connecting rod and a sealing valve element, wherein a circular-disc-shaped piston seat is formed at one end of the piston connecting rod, the piston seat is provided with more than two air holes in a penetrating way, and the sealing valve element is movably clamped and combined on the piston seat of the position connecting rod and can seal the more than two air holes. The piston has the advantages that the sealing valve element is combined with the piston connecting rod in a direct clamping and combining mode, in addition, the sealing effect is better, in the long-time use process, the deformation cannot easily occur, and the noise cannot be easily generated.

Description

The piston of pumping machine

Technical field

The utility model relates to a kind of piston assembly of pumping machine, especially a kind of piston of pumping machine.

Background technique

General pumping machine lies in family or automobile-usedly inflates for giving tire or air bed etc., and general pumping machine system carries out reciprocating action by the motor driving piston in piston cylinder, air is extruded the formation pressurized gas with compression, and the effect of inflation is provided by this.

It is the piston of disclosed a kind of pumping machine in the TaiWan, China new patent case of M319326 " air-inflating device " such as certificate number, this piston lies in the top and is formed with a piston seat, be provided with a pore in this piston seat system, be to be provided with an elastic spring and be to be covered on this pore in the top of this piston seat, when this piston start, this elastic spring can be subject to gas shock and this piston seat formation folding shape, gas flow is entered in the cylinder, when treating next piston start, again gas is blown out by extruding in the cylinder.

And existing piston cording in practical application has following problem:

1, this elastic spring system is combined with the piston seat of this piston with riveting method, assemble comparatively loaded down with trivial details, and under long-time the use, this elastic spring produces warpage or distortion easily, and and produce gap or can't driving fit between this piston seat, and gas is flowed out by pore when extruding, causes the working efficiency of this piston not good.

2, this elastic spring is the lamellar body made from metal, is easier to produce noise during with this piston driving fit.

3, the cost of material of existing this elastic spring is higher.

Based on above-mentioned problem, be improved in fact necessity of reinforcement.

Summary of the invention

For the elastic spring that solves existing piston produces distortion and working efficiency is not good, easily produce the problem such as noise, the piston of quiet pumping machine when main purpose of the present utility model is to provide a kind of difficult generation distortion and start easily.

The technological means that the utility model uses ties up in the piston that a kind of pumping machine is provided, and comprising:

Piston rod, it is to include handle body and piston seat, this handle body lies in an end one and connects this piston seat, this piston seat is in the form of annular discs, and be equipped with more than one pore in one of this piston seat plane and outside this piston seat the clamping slot of side face, this pore system is arranged at this piston seat and differs from the position that connects this piston rod;

The sealing valve member, it is the piston seat that is sticked in movably this piston rod, and be to include snap rings and valve block, this engaging ring system movably is resisted against in the clamping slot of this piston seat with inner edge, this valve block system is connected in side within this snap rings, and can cover the more than one pore that is closed in this piston seat.

The piston of aforementioned pumping machine, wherein this snap rings is circular ring body, and in interior all cordings the madial wall that is around the overhead kick shape is arranged.

The piston of aforementioned pumping machine, wherein the outer peripheral sidewall of this snap rings system is skewed and is the kenel that enlarges gradually toward the outer side.

The piston of aforementioned pumping machine, wherein this piston seat system includes base, closing section and two above blocking flanges, this base is in the form of annular discs and is connected with this handle body one, this closing section lies in this base and forms cylindrical protrusion shape, the outer periphery that are arranged at this closing section are protruded respectively relatively in this plural blocking flange system, and the outer circumferential face that this plural blocking flange system is parellel with this base and surrounds this closing section forms this clamping slot.

The piston of aforementioned pumping machine, wherein this valve block system is connected in edge within this snap rings with the two ends one, and and this snap rings within form annular distance more than two between the sidewall, this plural annular distance is the plural blocking flange that corresponds respectively to this piston seat, makes the sealing valve member be aligned with this plural blocking flange with this plural annular distance.

The piston of the pumping machine that the utility model utilization provides, the effect that can obtain enhancement comprises:

1, the sealing valve member of the utility model is to install the piston seat that is incorporated into piston rod in the engaging mode, except assembling easily, and by being difficult for producing the pore that the sealing valve member that is out of shape covers piston rod movably, sealing valve member and piston seat can more firmly be fitted, it is loose also to be difficult for making air-flow to be overflow by piston seat, and noise also can significantly reduce in the use.

2, because the utility model uses the larger sealing valve member of area coverage to cover, make piston seat that plural pore can be set, thus, can allow the piston effect of giving vent to anger better, and then promote working efficiency.

3, the employed cost of material of sealing valve member of the utility model is lower, can reach the effect that reduces cost.

Description of drawings

Fig. 1 is the External view of the utility model preferred embodiment.

Fig. 2 is the exploded view of the utility model preferred embodiment.

Fig. 3 is the sectional drawing of the utility model preferred embodiment.

Fig. 4 is the forward motion schematic representation of the utility model preferred embodiment.

Fig. 5 is the backward movement schematic representation of the utility model preferred embodiment.

The primary component symbol description:

10 piston rods, 11 handle bodies

111 attachment holes, 12 piston seats

121 bases, 122 closing sections

123 blocking flanges, 1231 breach

1232 clamping slots, 124 pores

20 sealing valve members, 21 snap rings

211 madial walls, 22 valve blocks

221 annular distances

30 pneumatic cylinders, 31 tap holes.

Embodiment

In order to understand in detail technical characteristics of the present utility model and practical effect, and can implement according to the content of specification, further with the preferred embodiment shown in graphic, be described in detail as follows:

The utility model is a kind of piston of pumping machine, sees also the preferred embodiment of Fig. 1 to Fig. 3, and it is to comprise a piston rod 10 and a sealing valve member 20, wherein:

This piston rod 10 is to include a handle body 11 and a piston seat 12, this handle body 11 is the slightly long handle of rectangle of a cross section, form semicircle and offer an attachment hole 111 in one of this handle body 11 end, be used for connection for transmission spare, the other end in this handle body 11 is that one connects this piston seat 12, this piston seat 12 is to include a base 121, one closing section 122, two blocking flanges 123 and two pores 124, this base 121 is in the form of annular discs and is connected with these handle body 11 one, this closing section 122 is cylindric and forms convex shapes in this base 121, this two blockings flange 123 is semicircular in shape and relatively protrudes respectively the outer periphery that are arranged at this closing section 122, cording has the interval between this two blockings flange 123, and on the plane of this closing section 122, form two breach 1231, this two blockings flange 123 is that the outer circumferential face that is parellel with this base 121 and surrounds this closing section 122 forms a clamping slot 1232, this two pore 124 is the plane that is arranged in respectively this closing section 122, and be arranged at this piston seat 12 and differ from the position that is connected with this handle body 11, when making this piston rod 10 action, air-flow can be passed by this two pore 124.

Sealing valve member 20 is the piston seat 12 that movably is sticked in this piston rod 10, sealing valve member 20 is to include a snap rings 21 and a valve block 22, this snap rings 21 is circular ring body, and in interior all cordings one madial wall 211 that is around the overhead kick shape is arranged, the outer peripheral sidewall system of this snap rings 21 is skewed and is the kenel that enlarges gradually toward the outer side, this valve block 22 is to be connected in sidewall 211 within this snap rings 21 with the two ends one, and and this snap rings 21 within form the annular distance 221 of two semicirculars in shape between the sidewall 211, this two annular distance 221 is the two blocking flanges 123 that correspond respectively to this piston seat 12, make sealing valve member 20 be aligned with this two blockings flange 123 with this two annular distance 221, allow these snap rings 21 engagings be positioned in the clamping slot 1232 of this piston seat 12, and sealing valve member 20 is before can doing in this clamping slot 1232, rear translation motion.

The mode of execution that the utility model is better such as Fig. 4 and shown in Figure 5, when the utility model is incorporated into a pneumatic cylinder 30, this piston rod 10 is subject to that external force drives and when producing forward and backward reciprocating action, outside this moment sealing valve member 20 sidewall system against and be sealed within this pneumatic cylinder 30.

As shown in Figure 4, when this piston rod 10 (refers to along the 11 interior directions of arrow of handle body among the figure) forward action and drives simultaneously this piston seat 12 forward, sealing valve member 20 then slightly retreats in the clamping slot 1232 of this piston seat 12, and two pores 124 of this piston seat 12 of sealing driving fit, allow this piston seat 12 and sealing valve member 20 compress the gas of these pneumatic cylinder 30 inside, and the gas of this pneumatic cylinder 30 is discharged by a tap hole 31, and then produce the function that pressurized gas reach inflation.

As shown in Figure 5, when the backward start and drive simultaneously this piston seat 12 backward time of this piston rod 10, main elastic strain by rubber itself makes circular valve block 22 in the middle of the piston be subject to the thrust of extraneous gas and naturally opens, thereby the generation slit enters in the cylinder gas.Simultaneously, the frictional force effect that is subject to sidewall within this pneumatic cylinder 30 because of sidewall outside the sealing valve member 20 also can make it and this piston seat 12 between produce relative position variation, make equally between sealing valve member 20 and this piston seat 12 and produce the gap, and make two pores 124 of this piston seat 12 be open state, gas is flowed back in this pneumatic cylinder 30 again, prepare compressed action next time.

The sealing valve member 20 of the utility model can be incorporated in the engaging mode piston seat 12 of this piston rod 10, higher by integral sealing, and the larger sealing valve member 20 of driving fit area is with two pores, 124 sealings of piston seat 12, therefore comparatively easy in the assembling, when sealing valve member 20 in action, also because of the blocking location of two blocking flanges 123 of this piston seat 12 and clamping slot 1232, can reduce on the one hand the generation of noise, the stroke that yet can guarantee on the other hand to seal valve member 20 can be not excessive, two pores 124 of this piston seat 12 of arranging in pairs or groups can provide larger air inflow, can more effectively promote working efficiency of the present utility model.

The piston seat 12 of the utility model further is to set up plural pore 124, be not limited to the quantity in the preferred embodiment, sealing valve member 20 is only to need to be combined in the engaging mode with this piston seat 12, is not limited to be combined with the kenel of two blocking flanges with two corresponding annular distances.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, have in the technical field under any and usually know the knowledgeable, if in the scope that does not break away from technical characteristics that the utility model is carried, utilize technology contents that the utility model discloses to do the local equivalent embodiment who changes or modify, all still belong in the scope of the utility model technical characteristics.

Claims

1. the piston of a pumping machine comprises:

2. as claimed in claim 1 the piston of pumping machine, wherein this snap rings is circular ring body, and in interior all cordings the madial wall that is around the overhead kick shape is arranged.

3. as claimed in claim 2 the piston of pumping machine, wherein the outer peripheral sidewall of this snap rings system is skewed and is the kenel that enlarges gradually toward the outer side.

4. such as the piston of the pumping machine as described in each in the claims 1 to 3, wherein this piston seat system includes base, closing section and two above blocking flanges, this base is in the form of annular discs and is connected with this handle body one, this closing section lies in this base and forms cylindrical protrusion shape, the outer periphery that are arranged at this closing section are protruded respectively relatively in this plural blocking flange system, and the outer circumferential face that this plural blocking flange system is parellel with this base and surrounds this closing section forms this clamping slot.

5. such as the piston of the pumping machine as described in each in the claims 1 to 3, wherein this valve block system is connected in edge within this snap rings with the two ends one, and and this snap rings within form annular distance more than two between the sidewall, this plural annular distance is the plural blocking flange that corresponds respectively to this piston seat, makes the sealing valve member be aligned with this plural blocking flange with this plural annular distance.

6. as claimed in claim 4 the piston of pumping machine, wherein this valve block system is connected in edge within this snap rings with the two ends one, and and this snap rings within form annular distance more than two between the sidewall, this plural annular distance is the plural blocking flange that corresponds respectively to this piston seat, makes the sealing valve member be aligned with this plural blocking flange with this plural annular distance.

7. as claimed in claim 6 the piston of pumping machine, wherein this piston seat is to be provided with two these blocking flanges relatively to protrude respectively the outer periphery that are arranged at this closing section, cording has the interval between this two blockings flange, and on the plane of this closing section, forming two breach, sealing valve member system is provided with two corresponding to the annular distance of this two blockings flange.

8. as claimed in claim 7 the piston of pumping machine, wherein two these blocking flanges and this two annular distance are semicircular in shape.