TWM480005U - Cylinder check valve - Google Patents

Description

Cylinder check valve

This creation relates to an air compressor, especially a cylinder check valve installed in the air compressor between the air outlet of the cylinder block and the cylinder joint.

As shown in FIG. 6 and FIG. 7 , the structure of the conventional electric air compressor includes a cylinder 60 and a driving mechanism 70. The cylinder 60 is provided with a reciprocating piston in the cylinder 61 thereof. a rod 62, and the cylinder 61 is airtightly connected to a cylinder joint 63 at a side end thereof having an air outlet 611, and a spring type check valve 64 is disposed between the outer side of the air outlet 611 of the cylinder 61 and the cylinder joint 63. The spring type check valve 64 is composed of a valve ball 641 and a spring 642. The valve ball 641 abuts against the outer circumference of the air outlet 611 of the cylinder 61, and the spring abuts between the valve ball and the inner side wall of the cylinder joint. The valve ball is elasticized, and the valve ball is closed to the air outlet 611 of the cylinder 61. The driving mechanism 50 is composed of a motor and a gear set. The gear set is connected between the motor spindle and the piston rod 62 for The piston rod 62 is driven to move.

When the conventional electric air compressor is used, the driving mechanism 50 drives the piston rod 62 in the cylinder 61 to reciprocate. When the air is ingested, the valve ball 641 of the spring type check valve 64 is pushed by the spring 642. Closely closing the air outlet 611 of the cylinder 61, the external air pushes the piston valve of the piston rod 61 into the cylinder body by the pressure difference between the inside and the outside of the cylinder 61; when the air is blown, the piston valve automatically closes, the piston rod The air inside the cylinder 61 is pressurized so that the pressurized air in the cylinder 61 is pushed away from the valve ball 641, and the gap between the valve ball 641 and the air outlet 611 of the cylinder 61 is outputted, and the gas passing through the cylinder joint 63 is continued. The passage 631 is delivered to the inside of the object to be inflated.

The structure of the electric air compressor is disclosed above, and although a set of air pumping devices having a pumping function can be provided, and the air type check valve installed between the cylinder block and the cylinder joint can be used in the air outlet of the cylinder body. Provides a gas check function between the cylinder joint and the cylinder joint. However, the spring type check valve is composed of a combination of a spring and a valve block, so that the cylinder check valve of the air compressor has a large number of components, which is time-consuming and labor-intensive to assemble, and has high manual assembly cost.

The main purpose of this creation is to provide a cylinder check valve, which can be used to solve the problems of the existing spring type check valve components used in the cylinder of the air compressor and the high cost of manual assembly.

In order to achieve the foregoing, the cylinder check valve proposed by the present invention is a rubber-integrated member including a valve ball portion, an abutting end portion, and a valve formed between the valve ball portion and the abutting end portion. Elastic body.

By creating the front cylinder check valve, the rubber body integrally formed cylinder check valve directly forms an elastic body portion at the side end of the valve ball portion, and provides the elastic force required for the operation of the cylinder check valve, so that the cylinder is non-returned. The valve can be directly installed between the air outlet of the cylinder and the cylinder joint, and the spring in the conventional spring type check valve is deleted, so that the air compressor can make the assembly operation easier and save the parts, and the manual assembly operation time is reduced. Cost, which in turn reduces costs.

As shown in FIG. 1, a preferred embodiment of the inventive cylinder check valve 10 is disclosed. As can be seen from the drawings, the cylinder check valve 10 is a rubber-integrated member including a valve ball. a portion 11 , an elastic portion 12 and an abutting end portion 13 , the valve ball portion 11 forming a semi-spherical shape, and the elastic body portion 12 is formed between the valve ball portion 11 and the abutting end portion 13 A hole 121 is formed in the center of the elastic body portion 12. The abutting end portion 13 includes an annular body 131 having a middle hole. The hole in the annular body 131 communicates with the hole 121 of the elastic body portion 12.

As shown in FIG. 1 , in the preferred embodiment, the outer diameter of the two ends of the elastic body portion 12 connecting the valve ball portion 11 and the abutting end portion 13 is smaller than the outer diameter of the middle portion of the elastic body portion 12 to form an arc. The body, and the holes in the inner portion of the elastic body portion 12, provide the elastic body portion 12 with excellent compression and recovery elasticity. The abutting end portion 13 can also form a plurality of spaced-apart extending protrusions 132 on the outer circumference of the annular body 131 so that the annular body 131 forms a gap between each of the two extending protrusions 132.

As shown in FIG. 2 to FIG. 4 , when the cylinder check valve 10 is applied to an air compressor, the cylinder check valve 10 is installed in the accommodating space 22 outside the air outlet 21 of the cylinder block 20 and the cylinder joint. Between the inlet ends 31 of the passages 30 of the passages, the abutting end portions 13 contact the passage inlet end 31 of the cylinder joint 30, and the elastic portion 12 provides an elastic force. Under normal conditions, the valve ball portion 11 abuts against the air outlet of the cylinder block 20. The air outlet 21 is closed at the outer periphery of 21 .

When the air pump inflates the inflator, as shown in FIG. 4 and FIG. 5, the driving mechanism 50 drives the piston rod 40 in the cylinder 20 to reciprocate, and the air is pressurized into the interior of the object to be inflated, wherein When the air is inflated, the valve ball portion 11 of the cylinder check valve 10 of the present invention tightly closes the air outlet 21 of the cylinder 20 under the elastic force provided by the elastic body portion 12, and the external pressure difference between the inside and the outside of the cylinder 20 makes the outside The air pushes open the piston valve of the piston rod 40 and enters the inside of the cylinder block 20; when inflating, the piston valve automatically closes, and the piston rod 40 pressurizes the air inside the cylinder block 20, so that the cylinder 20 is pushed up by the pressurized air. The valve ball portion 11 of the check valve 10 is separated from the air outlet port 21, and the pressurized air passes through the gap between the valve ball portion 11 and the side wall of the air outlet port 21 of the cylinder block 20, and continues through the opening 311 of the inlet port end 31 of the cylinder joint 30 and the gas. The passage 32 is delivered to the inside of the object to be inflated.

10‧‧‧Cylinder check valve
11‧‧‧ Valve Department
12‧‧‧ Elastomers
121‧‧‧ hole
13‧‧‧Abutment end
131‧‧‧ring body
132‧‧‧Extended bumps
20‧‧‧ cylinder
21‧‧‧ gas outlet
22‧‧‧ accommodating space
30‧‧‧Cylinder connector
31‧‧‧ access entrance
311‧‧‧ openings
32‧‧‧ gas passage
40‧‧‧ piston rod
50‧‧‧ drive mechanism
60‧‧‧ cylinder
61‧‧‧Cylinder block
611‧‧‧ air outlet
62‧‧‧ piston rod
63‧‧‧Cylinder connector
631‧‧‧ gas passage
64‧‧‧Spring type check valve
641‧‧‧Valve ball
642‧‧ ‧ spring

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a preferred embodiment of the inventive cylinder check valve. 2 is a perspective exploded view of a preferred embodiment of the cylinder check valve of FIG. 1 and a cylinder block and a cylinder joint. 3 is a partial cross-sectional view showing the cylinder check valve shown in FIGS. 1 and 2 applied to an air compressor. Figure 4 is a partial enlarged view of Figure 3. Fig. 5 is a reference diagram of the state of use of the cylinder check valve of the present invention between the cylinder block and the cylinder joint. Figure 6 is a perspective view of a conventional electric air compressor. Figure 7 is a partial cross-sectional view of the conventional electric air compressor shown in Figure 6.

10‧‧‧Cylinder check valve

11‧‧‧ Valve Department

12‧‧‧ Elastomers

121‧‧‧ hole

13‧‧‧Abutment end

131‧‧‧ring body

132‧‧‧Extended bumps

Claims (4)

A cylinder check valve is a rubber-integrated member comprising a valve ball portion, an abutting end portion, and an elastic body portion formed between the valve ball portion and the abutting end portion. The cylinder check valve according to claim 1, wherein the valve ball portion is formed in a semi-spherical shape, a hole is formed in the center of the elastic body portion, and the abutting end portion includes an annular body having a middle hole, and the abutting end portion The holes communicate with the holes of the elastomer body. The cylinder check valve of claim 2, wherein the abutting end portion forms a plurality of spaced-apart extension lugs on the outer circumference of the annular body, and the annular body periphery forms a gap between each of the two extending protrusions. The cylinder check valve of 2 or 3, wherein an outer diameter of the outer end of the elastic body connecting valve ball portion and the abutting end portion is smaller than an outer diameter of the middle portion of the elastic body portion to form an arc curved body.