TW200528638A - Miniature simple air filling device - Google Patents

Abstract

The present invention provides a miniature simple air filling device that is reliable, has good performance, and can be operated in low temperature for supply of high pressure air, and can be used with a sealant in a flat automobile tire to inflate the flat tire for temporary use of the automobile. The present invention is a miniature simple air filling device for emergency repairing.

Description

200528638 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention provides a small and simple air filling device that has reliability, high performance, and can use high-pressure air even at low temperatures, especially when a tire bursts. It can be used together with the sealant to fill the flat tire with air and achieve the purpose that the car can be driven in an emergency. It is a small and simple air filling device that can be used for emergency repair. [Previous technology] At present, there are air compressor products for emergency repair of tires, but there are still on the market that can be installed in automobiles, a small, lightweight, and good durability, which can be used for emergency repairs when a tire bursts. The need for a reliable, small and easy emergency repair combination. The current small air compressor is shown in Fig. 11: a motor m, a reduction gear driven by the motor, and a crank disk k in which the gear is embedded, a connecting rod η connected to the crank disk k, and a piston q at the front end of the connecting rod η. The connecting rod η and the piston q are integrated, and there is a rubber ring s that seals the piston q and the cylinder chamber u. According to the inventor's patent such as US 6,280,163, the rubber ring s used in the small air compressor in the aforementioned U.S. patent is located at the outer peripheral surface q of the piston q. The shape of the cross section in the recessed groove y is a circular O-ring. On the other hand, with the action of the above-mentioned mechanism motor, when the piston is lowered, the suction ring v is opened and opened and closed when the piston is raised, so the piston can compress the air in the cylinder and discharge it through the air outlet z. Due to the reciprocating movement of the piston, the maximum inclination angles q2, ql at the upper and lower dead points are shown in q1, and the clearance gl between the cylinders is smaller than the long-diameter clearance g2 of the ellipse formed by q2 and the cylinder.

Page 5 200528638 V. Description of the invention (2) Therefore, the small-size integrated air piston and piston have the largest inclination angle in the piston, and they can fully lift the six rigid machines. In the foregoing description, the rubber aprons used in the sealing action shown in FIG. 11 cannot fully correspond to the round or moment of the connecting rod and the piston integrally, and the change in the gap between the rubbers, such as increasing the rubber ring, will also cause ^, Of the same cylinder. It is more hoped that the rubber ring of the small air compressor can be used in the winter with a gas filling capacity of -30 ° C). It can also be heated up to reduce the effect. [Summary of the Invention] The tire filler in the group S (the following is a small and simple air compressor 1 and a booster device group 2)

When a car is punctured, the repair order used for emergency repair is called S). S is a combination of a seal and a seal cylinder 2 containing a tire filler as shown in Figs. The above-mentioned combination S supplements the tire inner pressure while driving the seal red into the puncture tire T.

The small air compressor 1 and the sealing and pressure increasing device 3 are connected by a gas pipe 4A with a gas nozzle 5a, and between the sealing and pressure increasing device 3 and a puncture τ, a gas pipe 4B with a gas nozzle 5b is connected. connection. In addition, the high-pressure air flow generated by the small air compressor 到达 reaches the lower end of the sealing cylinder 2 in the sealing and boosting device 3, and has a sealing chamber f with a sealing cap C (the opening and closing valve 0 on the outflow side breaks the sealing cap C Even when the opening and closing valve i is opened, the tire filler and the airflow can be transported into the tire burst T together. After the tire filler is fully filled into the tire burst τ, the small and simple air compressor 1 continues to operate to supplement the tire internal pressure. After the end of the above operation, after about 10 minutes of driving, the tire filler fully fills the hole of the punctured tire τ, and then confirms and replenishes the internal pressure of the tire to the standard value and completes the emergency repair. In addition, the air pipe is configured in front of 4A With anti-reverse valve j prevent

Page 6 200528638 V. Description of the invention (3) Countercurrent. In the present invention, a rubber ring with a v-shaped cross section is used to compensate for the problem of gap changes caused by the change in the inclination of the integrated piston that cannot be solved by the O-ring through the scaling of the rubber ring. The machine is a zeit. Sleeve The present invention provides a small simple air compressor, which is driven by a motor. The rotary shaft is a small air compressor characterized by reciprocating in a reciprocating cylinder connected to a piston through a connecting rod. The small air compressor mentioned above is equipped with overpressure :::. The hand as a wheel ... Shrink two = valve Λ suck and inhale; sei V: ^ leaf · rubber waist: a rubber ring is placed between the piston and the inner wall of the cylinder, and ΐΐΠ outside The radial point has a rib extending in the direction of the connecting rod. The specific dream department of the present invention will be described later. The body device and its use effect can be supplemented by a detailed drawing of the filling device ^ Figure ^ 2 When the motor is forced to rotate, the piston 14 can be moved to the direction; = 13 ', then the connecting rod 13 causes the piston to crack the air filling device 10 The rear "of the steam cylinder 15 and the cylinder 16 is composed of ν and f, but it is set to 10. The safety valve with high-pressure air can escape 1 7 = same as the means for filling high-pressure air into the tire 18. Another, ^ bottle Cigarette lighter plug 19, and using the car's i 2 ν DC power is 200528638 V. Description of the invention (4) DC motor M of the power supply. As shown in FIG. 1. Small air compressor 1 〇, air delivery means 18 assembled in a detachable housing 20 made up of 20 A and 20 Β, the housing 20 also contains the cigarette lighter plug 19 The electric wire 6 A is connected to the gas pipe 4A equipped with the air nozzle 5a at the front end of the conveying means 18 and the pressure increasing device 3. The power line 6 A is connected to the switch 2 21 on the housing 20.

The above-mentioned small-sized air compression device, as a means of air filling, has a unitary heart 24 inside the main frame 23. The rotating shaft 11 is supported by the inner wall of the semicircle 23A of the main frame 23 and fixed by a shaft protruding from the opposite side of the main frame wall. As shown in FIG. 2, the reduction gear 22 is engaged with the front end transmission gear 21 of the motor M 2. The crankshaft 12 is fixed by the protruding part on the rotating shaft as shown in FIG. 2. In addition, the motor M is also fixed on the main frame by screws, and a reduction gear is formed by a transmission gear and a reduction gear. The rotation speed of the motor is reduced to 1/3 to 1/8 and transmitted to the rotary shaft 11.

The crank disk 12 is connected with the connecting rod 13 through a crank pin 26 and serves as the rotation axis of the connecting rod. The other end of the connecting rod is equipped with a piston. In this form, the connecting rod and the piston are an integrated lightweight FRP. The outer peripheral surface 14a of the piston 14 is equipped with a rubber victory ring 30. As shown in FIG. 5 (a), the piston has a vent hole 3 丨 A penetrating the piston, and the vent hole 3 1A is above (the direction of the anti-link is: Above) An intake valve 3 composed of an elastic body such as elastic rubber, synthetic resin, metal or the like, or a spring-sealed sheet plate made of a coil spring and the like is assembled. In addition, the piston 14 is shown in FIG. 2 as shown in FIG. 2, and the inner cavity 15 & of the cylinder 16 integrated with the main frame 23 is driven by the rotary shaft 12 to perform a figure-eight forward and reverse tilting reciprocating motion. The rubber between the inner wall of the cylinder barrel 15 and the piston

Page 8 200528638 V. Description of the invention (5) On the premise that the rubber ring 30 is sealed, the bottom dead point of Fig. 5 (b) to the maximum tilt of the piston is shown in Fig. 5 (C) to the top dead point (not shown) In the process, the air in the cylinder barrel 15 is compressed into high-pressure air through the switch of the intake air width 31. In the reciprocating operation of the piston 14 described above, the rubber ring 30 can effectively serve as a seal even if the gap G between the piston 14 and the inner wall of the cylinder tube 15 changes. The rubber ring is assembled in a groove 33 provided on the outer peripheral surface 1 4 a of the piston 14. As shown in FIG. 7, the groove 33 is formed by a bottom surface 3 3 A parallel to the central axis of the piston 14 and the direction of the connecting rod. The two sides in the direction of the anti-link link, the same as the link side 33B and the anti-link side 33C form a flared groove. The two sides of 33 B and 3 3 C in the groove 33 are at right angles a 1 and a 2 to the bottom line, respectively, and the flaring angle is set at 5 to 20 ° C. In addition, the above al and a 2 may be the same, or a 1 may be made. Slightly smaller to reduce friction. This structure sets both a 1 and a 2 to 10 degrees. The width W33a of the bottom surface 33A of the peripheral groove 33 is generally 0.9 to 3.6 mm, and a moderate size is 1.5 to 2.5 mm. This embodiment adopts 1.8 mm, and the depth of the groove 33 is 1133 ′, which is generally 1 〇 ~ 4.〇111111, with a moderate size of 1.6 to 2.3 mm, this form uses 2.0 mm. The above-mentioned flaring design of the peripheral groove not only facilitates the assembly of the rubber ring 30, but also prevents the rubber ring from escaping during operation, so as to effectively maintain the sealing effect. The rubber ring 30 'is shown in a ring shape as shown in FIG. The two ribs extending slightly apart are formed into V-shaped grooves, 36 are inner ribs, and 37 are outer ribs. The roots of the inner and outer ribs are the same thickness, and the surfaces on the opposite side of the V-groove (the inner surface of the inner ribs 36 and the outer ribs 3 7

200528638 V. Description of the invention (6) Outside) 'The tip of the inner rib is an outwardly expanding arc-shaped curve, and the outer rib has an inclined surface at the intersection of 80 ~ 140 degrees 37c to the tip with a height of H3 ^ 515% Η 3 7 c , Formed. In the free state, the vertical lines of the inner surface of the inner rib 36 and the outer surface of the outer rib 37 with the base surface 35a of the base portion 35 are at angles 81 and β2, respectively. The angle range is generally 10 to 40 degrees. A moderate angle is 15 to 30 degrees, and the design is 22 degrees. When the width W35a of the base surface 35a of the base portion 35 is the same as the length of the side surface 3 3 B in the link direction of the peripheral groove 33, as shown in Fig. 7, the base surface 35a and the side surface 33B can be in stable contact. In the above state, because the state where the inner rib 36 is in contact with the bottom surface 33A of the groove 33 is more stable, the angle B1s is above the angle a 1 and below (al + i 5 degrees), and passes through the base surface 35 a to the same side. The contact of the son-in-law of 33B and the contact of the inner rib 36 with the bottom surface 33A of the groove 33 ensures that the outer rib 37 will not lean into the groove after assembly. As shown in FIG. 7, in order to ensure that the inner rib 36 can be sandwiched between both sides of the peripheral groove 33 after assembly, the height η 3 6 is set to be 2 to 10% larger than the width of the peripheral groove 33. After assembling the rubber ring 30 on the peripheral groove 3 3, the side surface 3 3 C of the anti-link is inclined in the direction of the anti-link at the angle of a2, and at the same time, the outer rib 37 is angled B 2 at a vertical base surface 3 5 a. The radius is inclined outward. This result guarantees that even if the height H37 is the same as the internal rib height H36, it is the same as the side 33 (: there is a height difference of N (Figure 7)) to ensure that the positive external rib 37 is inclined inward under pressure. There is no danger of contact with the side 3 3 C. Also, the intersection point 37 c of the outer surface of the outer rib 37 and the outer circumferential surface of the piston 14 a has a protruding distance of l in the radial direction, that is, the piston 14 is not inserted into the cylinder cavity 1 5 In the free state, the outer diameter r of the outer rib 37 is the sum of the outer diameter dl4 of the outer peripheral surface 14a of the piston and the two ls (R = dl4a + 21).

Page 10 200528638 V. Description of the invention (7) ----- In addition, the angle Y formed by the two intersections 37cl and 37c2 of the above-mentioned intersection 37c of the rib 37 is in the range of 90 to 130 degrees in the free state, and it is equally divided during operation The state of the inner wall 15a of the linear vertical cylinder cavity 15 is the most lubricating, and the contact and friction force with the inner peripheral wall 15a of the cylinder are equalized into a sound map when the motion & For the design of the above-mentioned distance L, first consider the outer diameter dl4 of the outer peripheral surface ^ 4 of the piston 丨 4. When the piston 14 is at the maximum inclination angle, the outer peripheral surface Ua does not contract with the inner wall 15 of the cylinder, and consider the thickness of the piston 14 and The surface of the edge portion is arranged to set the outer diameter dl4 of the outer peripheral surface 14a (FIG. 8 (A)). In addition, to ensure that the piston 1 4 is at the maximum inclination angle, the plane b passing through the male shaft 37 c of the rubber ring ⑼ is the same as the cylinder inner circumference and 15 & The inner diameter d1) of the cylinder cavity 15 can also play a sealing role. 'L' is larger than d 2 'R / d 2 is 1.01 to 1.15. Therefore, at the maximum inclination angle, the leakage of compressed air can be reduced as shown in Fig. 8 (A). However, if the ratio exceeds 1 · 1 5, it will cause excessive contact, and the mobility and abrasion resistance will fall below ^ 1 · 02, and the air will leak easily. Therefore, it is set in an appropriate range-1 '03 ~ 1 · 08. With rubber ring V-shaped design, when the air is compressed in the cylinder, the outer ribs 37 are pressured outward in the radius to fully ensure the contact with the inner wall of the cylinder, which acts as a seal. Furthermore, air leakage due to deformation of the rubber ring is reduced, and the smooth operation is reduced to reduce wear and improve durability. And ensure the piston is sealed at the maximum tilt angle. The above rubber ring 30 may be made of rubber materials such as HNBR, NBR, BR, SBR, CR, EPDM, etc. In particular, HNBR has good elasticity and financial properties, so it is used in an environment of -30 ° C Can also ensure the sealing effect, so it is

Page 11 200528638 V. Description of the invention (8) The molding material used as the rubber ring is the best. In addition, in order to reduce the friction between the cylinder inner wall 15 a and the rubber ring 30, it is possible to use lubricants such as PA 0, mineral oil, fluorine-based oil, and silicone oil as lubricants. Good durability in a high temperature and wide area is the most suitable lubricant for the small and medium-sized simple air compressor 1 for flat tire emergency repair set S. In the above-mentioned integrated air discharge unit 24, as described above, the small-sized air compressor 10 and the air conveyance means 18 are assembled into the main frame 23. The air conveying means 18 is composed of the exhaust valve 15e in the cylinder above the main frame 23, the space 42 in front of the inlet and the outer wall 43. On the outer wall 43, in order to convey the high-pressure air generated by the cylinder tube 15, as shown in Figs. 3 and 4, an assembly port 43a is provided for the joint connected to the air pipe 4A of the sealing and boosting device 3, and for the above-mentioned safety valve 17 The assembling port 43b is provided with an assembling port 43c for the joint of the air pipe 4B for connecting the air pressure gauge 44 on the casing. The safety valve 17 shown in FIG. 9 has a valve seat 50a with a tapered tip at the assembly port 4 3 b cavity, a thread 50b at the rear end, and a spool with a rubber ring in contact with the valve seat 50a. 5 1. Spring 5 3 which provides pressure between the screw and the valve core through the screw 5 2 adjustable by the above-mentioned thread 5 0 b. The pressure of the rubber ring can be set by adjusting the screw. When the pressure formed by the internal pressure of the adjustment cavity 43 is greater than the setting, the rubber ring (valve) is pushed away by the valve seat 50a (Figure 9 (B)). Escape. That is, after the internal pressure exceeds the opening pressure set by the safety valve 17 (35 Okpa is set in this form), the safety valve is opened, the small air compression device 10, the air conveying means 18, the sealing and pressure increasing device 3, other air pipes and tires The high-voltage part inside can be released to avoid high-voltage

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Destroy and set the internal pressure of the tire. On material. In the case of the post-deterioration invention, the cigarette lighter insert 5 6 and the rear-end bend 570 are described. Among them, the spring can be changed for a small degree. The cigarette lighter 1 9 can be described. The side connection arc, 5 J uses stainless steel, After the heat treatment of the piano wire, the stainless steel and tool steel 4 make it possible to maintain safety for a long period of time. It is possible to repeatedly use a safety valve and a constant pressure valve. The queen valve is the same as the one through the air pipe. ^ η ^, ι-Body blade separation, such as 10cm separation to avoid degradation of O-rings and springs. Plug 19, connected to the car battery via steam spring &# + 1 nrAx ^ ^ in the car socket, as shown in Figure 10 (A), by touching too much c ^ ^ ^ u field body 5 5 and the positive and negative poles of the front end shrapnel. As shown in Fig. 10 (B), the above-mentioned ware-clamping disc u cr7 4 shell pole shrapnel, 57a, four relatively parallel leg pieces 57b, the center is the same as the center of the main body 55, the line is flat and the protruding parts on both sides of the main body are as above. The two protruding mountain shapes are on both sides of the body. When the cigarette lighter plug is inserted into the socket, the front end 57c of the negative terminal 57 can slide in smoothly and be crimped on the inner wall of the socket. Even the cigarette lighter plug can be used smoothly when it is inserted, pulled out, or rotated for adjusting the electrical angle. In addition, the above negative electrode terminals are made of phosphor bronze, copper, stainless steel, etc., especially the negative electrode terminal 57 made of phosphor bronze material, which has good current conductivity and good elasticity. It has strong attrition and corrosion resistance, and can fully guarantee the above actions. The most suitable material. The rubber ring (v-ring) shown in Figures 4 to 6 and the conventional o-ring were used for comparison experiments. The material of Example 1 was HNBR (measured with a UROMETER A type (rubber hardness tester), and the hardness was 74), and the material of Example 2 was a V-ring and made of silicone rubber. Under two temperature environments of 25 ° C and -30 ° C, with 1 2 V

200528638 V. Description of the invention (10) Source, the time it takes for the tire 2 2 5/6 OR 16 to be filled to 250 kpa. The test results are shown in Table 1. Examples 1 and 2 (V-rings) are compared with comparative examples (0-rings), especially at low temperatures, which significantly shortens the air-filling time. V-shaped rubber ring: the width W3 3a of the bottom surface 3 3 of the peripheral groove 3 3 is 1.8mm, the width W3 3d of the opening is 2.5mm, the shrinkage ratio of the molding material is 0.05, and the maximum tilting angle of the piston is 20 ° Example 1 Example 2 Comparative Example 1 Shape U-shaped U-shaped 0-shaped material NBR Silicone rubber NBR Boost performance 2 5 degrees C 5 minutes 5 6 seconds 6 minutes 5 seconds 5 minutes 5 7 seconds Boost performance -30 degrees C 6 minutes 4 3 seconds 8 minutes 21 seconds 8 minutes 4 2 seconds. According to the invention 9, a rubber ring is provided between the piston and the inner wall of the cylinder. As mentioned above, because the rubber ring is V-shaped, it can solve the integral type that cannot be solved by the 0-ring. The problem of the gap between the piston and the steam red caused by the change of the piston inclination angle J is because the deformation of the outer ribs of the rubber ring when the force is applied also fills the gap, which reduces the force of the piston and reduces the friction Because of the expansion and contraction of the outer ribs of the rubber ring, the deformation of the rubber ring is more likely to occur at low temperatures than the deformation of the rubber. Provide the tire inner pressure that the car can run. The present invention uses HNBR or NBR rubber rings, and sets the hardness to be measured with UROMETR A type (rubber hardness measuring instrument), the hardness is 65 ~ 75

200528638 V. Description of the invention (11) to ensure that it can maintain its flexibility and operate at normal or low temperature. Compared with the 0 ring, it has better elastic deformation. Its good weather resistance and durability ensure that it can be used occasionally after many years of use. The rubber ring of the present invention is assembled in the groove on the outer periphery of the piston. Before the piston is not inserted into the cylinder (unused state), the outer diameter R of the outer rib of the rubber ring is larger than the maximum inclination angle of the piston in the cylinder. The elliptical long diameter d2 of the outer rib of the ring in contact with the inner wall of the cylinder, the ratio R / d2 is 1 · 0 2 to 1. 15 to achieve smooth and unobstructed pistons throughout the entire movement. The car battery is connected through a cigarette lighter plug, and a sealing and pressure boosting device is provided between the air compressor and the tire, so that the invention can more easily and practically perform emergency repairs on flat tires. The small and simple air compressor of the present invention can enable a car at the time of a flat tire to travel to a car repair factory and allow the driver to conveniently operate and use it. Therefore, the device of the present invention is quite practical and progressive.

Page 15 200528638 Schematic illustrations Schematic diagrams: Section —— diagrams are three-dimensional illustrations of the small and simple air filling device of the present invention: The diagrams are partial exploded diagrams of the air filling devices of the present invention. The second picture shows the implementation of filling the flat tire with the device of the present invention. The fourth figure is the intention of the present invention to fill the tire with a filler. The fifth diagram is the schematic diagram of the piston body operation. The sixth diagram is the structure of the V-shaped saddle of the present invention is not intended. C) The seventh diagram is the schematic diagram of the structure of the combination of the V-ring and the piston body of the present invention. The eighth diagram is the piston body of the present invention. Action change diagram. The ninth diagram is a schematic diagram of the structure of the safety valve of the present invention. The tenth diagram is a schematic diagram of the structure of the cigarette lighter plug of the present invention. The tenth —— > The ten diagram is a schematic diagram of the conventional piston body operation. No .: Small and simple air pressure filling device 1 Driven rotary shaft 1 1 Connecting rod 13 Outer peripheral surface 1 4 a Inner cavity 1 5a Cylinder 1 6 Air conveying means 18 Sealing cylinder 2 Empty disk 1 Shaft plug Small curvature ο Install filling gas

2 1M cylinder tube 1 5 Air valve 1 5 e Safety valve 1 7 Cigarette plug 1 9 Housing 20

Page 16 200528638 Brief description of the housing 20A, 20B Transmission gear 21 Reducer gear 22 Switch 221 Main frame 23 Semicircle 23A Integrated heart 24 Crank needle 26 Booster device 3 Rubber ring 30 Intake valve 31 Vent hole 31 A Valve body 31B Groove 33 Slightly rectangular base 35 Inner rib 3 6 Outer rib 37 Air pipe 4A Air pipe 4B Space 42 Outer wall 43 Assembly port 4 3a Assembly port 43b Assembly π 43c Barometer 44 Gas nozzle 5a Gas nozzle 5b Seat 5 0a Thread 50b Spool 51 Screw 52 Spring 53 Body 55 Positive terminal 56 Negative terminal 57 Electric wire 6A Repair set S Flat tire T Seal cover C Seal chamber f On-off valve i Reverse valve j Motor M Crank disk k Connecting rod η Piston Q Cylinder chamber u Rubber ring s

P.17 200528638 Brief description of the drawing outer peripheral surface q 1 suction ring v maximum tilt angle q2 clearance g2 ql recessed groove y air outlet z clearance gl

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Claims (1)

200528638_ VI. Patent application scope A small and simple air filling device, which includes: a casing (20), which can be separated into casings 20 A and 20 B; a small air compressor (2 0), which It is assembled in the aforementioned casing (20). The air compressor (20) is provided with a motor M. The motor M drives a rotary shaft (11) and a crank disk (1 2) connected to the rotary shaft (1 1). ) Drives the connecting rod (1 3), which causes the piston (1 4) to reciprocate in the cylinder (1 6), a groove on the outer surface of the piston (1 4) is provided with a V-ring And the inner wall of the cylinder (16) to achieve a sealing effect. The aforementioned cylinder (16) is also provided with a safety valve device, which has a cone-shaped valve seat 50a facing the 43b cavity of the assembly port at the front end, and Thread 50b, a valve core 51 with a rubber ring in contact with the valve seat 50a, an adjustable screw 5 2 through the above thread 5 0 b, a spring 5 3 providing pressure between the screw and the valve core, the safety valve device When the inflation pressure is too high, it can be used for pressure relief to avoid damage caused by high pressure and set the internal pressure of the tire; A cigarette lighter plug (19), one end of which is connected to the motor M by a control switch (2 2 1), and the other end can be inserted into a socket in the car; an air pipe 4A equipped with a gas nozzle 5a, One end receives the air generated by the air compressor, and the other end of the air nozzle can be connected to the air nozzle on the tire for inflation. One air pipe 4B has one end connected to the pressure output end of the air compressor and the other end connected to The barometer 4 4 installed in the housing 20 A; With the effective use of such V-rings and safety devices, when a tire bursts, the small air-filled device has the feature of emergency repair. Page 19