TWM479988U - Cylinder body of inflation machine - Google Patents

Description

Air cylinder block

This creation is about an air compressor, especially a cylinder block with a springless check valve in the air compressor.

The structure of the conventional air compressor is exemplified by the electric air compressor shown in FIG. 7 and FIG. 8 , which mainly includes a cylinder 60 and a driving mechanism 70 , and the cylinder 60 is mainly in a cylinder housing 61 . A cylinder 62 and a piston rod 63 capable of reciprocating in the cylinder 62 are disposed. The cylinder 62 is provided with an O-ring 65 between the end of the cylinder wall 621 adjacent to the air outlet 6211 and the cylinder casing 61. A gas-tight combination is provided between the two, and a plurality of spring-type check valves 64 are disposed between the gas outlets 6211 of the cylinder tube 62 and the gas output passages of the cylinder casing 61. The spring-type check valve 64 is composed of a valve block 641. In combination with a spring 642, the valve block 641 abuts against the wall 621 of the air outlet 6211 of the cylinder 621, and the spring 642 abuts between the valve block 641 and the inner wall of the cylinder casing 61. The drive mechanism 70 includes A motor and a gear set are coupled between the motor spindle and the piston rod 63 for driving the piston rod 63 to move.

In the prior art, when the electric air compressor is in use, the starter motor reciprocates via the piston rod 63 in the gear set drive cylinder 62. At the time of intake, the valve block 641 of the spring type check valve 64 is pushed against the spring 642. The air outlet 6211 of the cylinder tube 62 is tightly closed by the pressure difference between the inside and the outside of the cylinder tube 62, so that the external air pushes the piston valve of the piston rod 63 into the cylinder tube 62; when the air is pumped, the piston valve automatically closes. The piston rod 63 pressurizes the air inside the cylinder tube 62 to push the pressurized air into the valve block 641, and the gap between the valve block 641 and the air outlet 6211 of the cylinder tube 62 is outputted to the inside of the object to be inflated.

The structure of the electric air compressor is disclosed above, although a set of air pumping devices can be provided, and the spring type check valve in the cylinder block can provide a gas backstop function between the air outlet of the cylinder tube and the cylinder casing, but the spring type The check valve is composed of a combination of a spring and a valve block, and the cylinder tube assembly is arranged in the cylinder casing, and an O-ring must be added to make the airtight combination therebetween, thereby causing the cylinder block portion of the air compressor to have There are many components, the assembly is time-consuming and labor-intensive, and there are problems such as high labor assembly costs.

The main purpose of this creation is to provide a cylinder block for the air compressor, which is created by the present invention to solve the problems of the excessive number of components of the existing cylinder cylinder mounted spring type check valve and the high cost of manual assembly.

In order to achieve the above objective, the cylinder system of the air compressor proposed by the present invention comprises: a hollow cylinder having an end wall at one end and an opening at the other end, and an extending convex portion extending outward in the axial direction is formed at the center of the end wall. a side end of the extended convex portion forms an air outlet; and a rubber check valve includes an outer ring portion, a valve piece portion and a plurality of engaging portions, and the valve piece portion is integrally formed on one outer side of the outer ring portion in combination with the plurality of connecting portions a spacing between the valve piece portion and the outer ring portion, the outer ring portion of the rubber check valve is sleeved on the outer side of the extended convex portion of the cylinder tube, and the outer ring portion is abutted against the outer surface of the end wall of the cylinder tube, the valve piece The department can open and close the air outlet.

By combining the combination of the cylinder block and the cylinder structure, the main purpose is to form the cylinder block by the combination of the integrally formed rubber check valve and the cylinder tube. Compared with the cylinder block structure of the existing air compressor, the creation The overall structure of the cylinder block can save a spring and an O-ring and other components, and the creation can make the assembly movement of the cylinder block easier and easier, saving labor assembly time and cost, thereby reducing the cost.

As shown in FIG. 1 and FIG. 2, a preferred embodiment of a cylinder block of the present invention is disclosed. The cylinder block 10 includes a cylinder 11 and a rubber check valve 12.

As shown in FIG. 1 and FIG. 2, the cylinder tube 11 is a hollow cylindrical body having an end wall 111 at one end and an opening 112 at the other end, and an extending convex portion extending outward in the axial direction is formed in the center of the end wall 111. 113, the side end of the extending convex portion 113 forms an air outlet 114 and an edge 115 located at the periphery of the air outlet 114.

As shown in FIG. 1 and FIG. 2, the rubber check valve 12 is a member made of a rubber material, and includes an outer ring portion 121, a valve piece portion 122, and a plurality of engaging portions 123. The outer ring portion 121 The inner ring hole 1211 has an inner ring hole 1211, and the inner ring hole 1211 corresponds to the extending convex portion 113. The valve piece portion 122 is disposed outside one end of the outer ring portion 121, and has a spacing D between the valve piece portion 122 and the outer ring portion 121. As shown in FIG. 2, FIG. 4 and FIG. 5, the plurality of engaging portions 123 are distributed on the outer periphery of the valve piece portion 122 and connected to the outer ring portion 121. The rubber check valve 12 is sleeved on the outer ring portion 121. The outer ring portion 121 abuts against the outer surface of the end wall 111 of the cylinder tube 11, and the valve piece portion 122 abuts against the end edge 115 of the periphery of the air outlet 114 of the cylinder tube 11 and can be opened and closed. Air port 114.

As shown in FIG. 3 to FIG. 5, in the preferred embodiment, the valve portion 122 of the rubber check valve 12 forms an arc-shaped piece centered at the center of the convex outer ring portion 121, so that the rubber check valve is provided. 12 is mounted on the cylinder barrel 11, and the valve piece portion 122 can tightly close the air outlet 114 by the elasticity of the rubber check valve 12 itself.

As shown in FIG. 3 and FIG. 4, when the cylinder cylinder of the present invention is applied to an air compressor, as an example of the electric air compressor, the cylinder cylinder 10 of the present invention is installed inside the cylinder casing 20, and the cylinder casing is provided. The inner annular abutting portion 21 presses against the outer ring portion 121 of the rubber check valve 12 to hermetically combine the cylinder casing 20 and the cylinder barrel 11, and in a normal state, the valve piece portion 122 can tightly close the air outlet 114. In addition, the piston 40 of the motor 40 coupled with the gear set 50 is inserted into the cylinder 11 to form an electric air compressor.

When the electric air compressor is in use, as shown in FIGS. 3 and 6, the motor 40 is used to drive the piston rod 30 in the cylinder 11 to reciprocate via the gear train 50. At the time of intake, the rubber check valve 12 is used. The valve piece portion 122 is tightly closed by the valve piece portion 122 by the elastic force of the rubber material and the gas pressure difference, so that the external air pushes the valve of the piston rod 30 into the inside of the cylinder tube 11; When the air is blown, the piston rod 30 pressurizes the air inside the cylinder tube 11. After the air is pressurized in the cylinder tube 11, the valve portion 122 of the rubber check valve 12 is pushed open, and the air outlet 114 from the valve piece portion 122 and the cylinder tube 11 is pushed out. The gap is pushed out and delivered to the inside of the object to be inflated via the gas passage inside the cylinder casing 20.

10‧‧‧Cylinder block
11‧‧‧Cylinder
111‧‧‧End wall
112‧‧‧ openings
113‧‧‧Extended convex
114‧‧‧ air outlet
115‧‧‧ edge
12‧‧‧Rubber check valve
121‧‧‧Outer Rings
1211‧‧‧ Inner ring hole
122‧‧‧ Valve Department
123‧‧‧Connecting Department
D‧‧‧ spacing
20‧‧‧Cylinder shell
21‧‧‧Apartment
30‧‧‧ piston rod
40‧‧‧Motor
50‧‧‧ Gear Set
60‧‧‧ cylinder
61‧‧‧Cylinder shell
62‧‧‧Cylinder
621‧‧‧
6211‧‧‧ outlet
63‧‧‧ piston rod
64‧‧‧Spring type check valve
641‧‧‧Valve block
642‧‧ ‧ spring
65O‧‧‧ Ring
70‧‧‧ drive mechanism

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a preferred embodiment of the cylinder block of the present invention. 2 is a perspective exploded view of a preferred embodiment of the cylinder block shown in FIG. 1. 3 is a partial cross-sectional view showing a preferred embodiment of the cylinder block shown in FIGS. 1 and 2 applied to an electric air compressor. Figure 4 is a partially enlarged cross-sectional view showing the electric air compressor shown in Figure 3. Figure 5 is a partial cross-sectional view showing another viewing angle of the electric air compressor shown in Figure 3. Fig. 6 is a reference diagram of the state of use of the cylinder cylinder of the present invention applied to an electric air compressor. Figure 7 is a schematic perspective view of a conventional electric air compressor. Figure 8 is a partial cross-sectional view showing the conventional electric air compressor shown in Figure 7.

10‧‧‧Cylinder block

11‧‧‧Cylinder

111‧‧‧End wall

113‧‧‧Extended convex

114‧‧‧ air outlet

115‧‧‧ edge

12‧‧‧Rubber check valve

121‧‧‧Outer Rings

122‧‧‧ Valve Department

123‧‧‧Connecting Department

20‧‧‧Cylinder shell

21‧‧‧Apartment

30‧‧‧ piston rod

Claims (3)

The cylinder block of an air compressor comprises: a hollow cylinder having an end wall at one end and an opening at the other end, and an extending convex portion extending outward in the axial direction is formed at the center of the end wall, and a side end of the extended convex portion is formed And a rubber check valve, comprising: an outer ring portion, a valve piece portion and a plurality of connecting portions, wherein the valve piece portion is integrally formed on one outer side of the outer ring portion, the valve piece portion and the outer ring portion There is a spacing between the outer ring portion of the rubber check valve sleeved outside the extended convex portion of the cylinder tube, the outer ring portion abuts against the outer surface of the end wall of the cylinder tube, and the valve piece portion can open and close the air outlet. The cylinder block of the air compressor according to claim 1, wherein the cylinder tube forms an end edge at the periphery of the air outlet opening at the side end of the extended convex portion, and the end edge of the valve plate portion abutting against the periphery of the air outlet of the cylinder tube is closed. Air port. The cylinder block of the air compressor according to claim 1 or 2, wherein the valve piece of the rubber check valve forms an arcuate piece centered at the center of the outer convex ring portion.