TWI477696B - Air compressor transmission mechanism - Google Patents

Description

Air compressor drive mechanism

The invention provides a transmission mechanism of an air compressor, in particular, a bearing in a transmission mechanism of an air compressor forms a non-fully circular structure, so that the piston body of the air compressor operates at a high frequency in the compression cylinder, Fully round bearings can be fixed to the body without causing idling or falling off.

Referring to the ninth and tenth drawings, a conventional air compressor 1 is shown. The air compressor 1 includes a base 11, a compression cylinder 12 coupled to the base, and a motor assembled on the base. 13 and a piston body 14 that is reciprocated within the compression cylinder 12 by the motor 13. The piston body is driven by the motor 13 to reciprocate in the compression cylinder 12 to complete the suction, compression and discharge of pressurized gas.

In general, the motor 13 of the conventional air compressor 1 drives the piston body to reciprocate by the transmission of a gear mechanism 15 and a crank mechanism. The gear mechanism 15 includes a first gear (priming gear) 151 mounted on the spindle 13 of the motor 13 and a second gear (driven gear) 152 meshing with the first gear 151, and the crank mechanism includes a gravity block 161. A shaft 162 and a connecting rod 163. One end of the shaft 162 passes through the second gear 152 and is mounted in a shaft hole 110 provided in the base 11. A metal sleeve or bearing is usually disposed in the shaft hole 110. 111, the bearing 111 is of a full circular shape, and one end of the connecting rod 163 is pivotally disposed on a hole 143 of one end 142 of the piston rod 141 of the piston body, since the connecting rod 163 is eccentric with respect to the shaft 162 When the second gear 152 is subjected to When the first gear 151 is driven, the piston body reciprocates in the compression cylinder 12.

However, in the process of reciprocating the piston body of the conventional air compressor 1 in the compression cylinder 12, deformation motion is often generated, which affects the efficiency of the air compressor and reduces the service life of the air compressor. After intensive research by the inventors, one of the reasons was found to be caused by the excessive distance between the compression cylinder 12 and the susceptor 11, that is, as shown in the tenth figure, since the gear mechanism 15 is provided on the compression cylinder 12 and the pedestal. Between 11 and 11, there is a long distance (D) between the center of the compression cylinder 12 and the inner edge of the base 11, due to the existence of the longer distance (D), the movement of the link 163 in the centrifugal direction The rotation of the shaft 162 is greatly affected, so that when the piston body is reciprocating, the inner wall of the shaft hole 110 provided with the shaft 162 is firstly worn at a certain point due to uneven force, and the shaft hole 110 is formed. After wear, the rotation of the shaft 162 (as indicated by reference numeral A in Fig. 11) forms a motion of the center of the non-fixed point. Once this phenomenon occurs, the rotation of the link 163 (e.g., reference numeral C of the eleventh figure) Also shown is a non-circular movement that causes the valve head of the piston body to undergo a reciprocating motion within the compression cylinder 12 (as indicated by the dashed line in the tenth figure), resulting in a piston body valve The bearings in the head and shaft holes are easily broken and the life is reduced.

The present inventors have in view of this and have been engaged in design and have produced the present invention. Accordingly, the main object of the present invention is to provide a transmission mechanism for an air compressor that can improve the stability of the piston body, thereby improving the disadvantages of the conventional air compressor described above, thereby improving the service life of the air compressor and the piston body.

An air compressor transmission mechanism according to an embodiment of the present invention includes a base, a compression cylinder coupled to the base, a piston body reciprocable in the compression cylinder, and assembled therein a motor on the base; a set of spindles on the motor a first gear is coupled to the second gear, and the second gear is coupled to drive the piston body to reciprocate in the compression cylinder. The base has a first positioning hole and a second positioning hole. The second positioning hole is provided with a metal sleeve or a bearing, and the bearing is composed of an outer wheel, an inner wheel and a plurality of balls, and the outer wheel has a non-full circular shape, and the outer wheel has a flat cut surface. The second positioning hole of the base is provided with a plane table with respect to the flat surface of the outer wheel, which can tightly resist the bearing assembled in the second positioning hole, so that the bearing does not be driven by the rotating shaft of the crank body. The idling or falling off causes the movement of the piston body in the compression cylinder to be smooth, thereby improving the service life of the air compressor.

In another embodiment, the bearing is composed of an outer wheel, an inner wheel and a plurality of balls, and the outer wheel has a non-full circular shape, the outer wheel has a protrusion and the second position of the base The recessed recess is provided with a recess relative to the outer wheel stud, which can tightly resist the bearing assembled in the second positioning hole, so that the bearing does not idling or falling off due to the rotating shaft power of the crank body, so that the piston The movement of the body in the compression cylinder is not only smooth, but also increases the service life of the air compressor.

In still another embodiment, the bearing is composed of an outer wheel, an inner wheel and a plurality of balls, and the outer wheel has a non-full circular shape, the outer wheel has a notch, and the second positioning of the base A protrusion corresponding to the recess of the outer wheel is protruded in the hole, which can tightly resist the bearing assembled in the second positioning hole, so that the bearing does not idling or falling off due to the rotation shaft dynamic force of the crank body, so that the piston The movement of the body in the compression cylinder is not only smooth, but also increases the service life of the air compressor.

Other objects, advantages and features of the present invention will become apparent from

(1)‧‧‧Air compressor

(11) ‧ ‧ pedestal

(110)‧‧‧Axis hole

(111)‧‧‧ Bearings

(12)‧‧‧Compression cartridge

(13)‧‧‧Motor

(131)‧‧‧ mandrel

(14)‧‧‧ piston body

(141)‧‧‧Piston rod

(142) ‧ ‧ end

(143)‧‧‧ round holes

(15)‧‧‧ Gear mechanism

(151)‧‧‧First gear

(152) ‧‧‧second gear

(161)‧‧‧Gravity block

(162)‧‧‧ shaft

(163)‧‧‧ Connecting rod

(2) ‧‧‧Air compressor

(3) ‧ ‧ pedestal

(31)‧‧‧First positioning hole

(32)‧‧‧Second positioning hole

(321)‧‧‧ plane table

(322)‧‧‧ Notch

(323)‧‧‧Bumps

(4) ‧‧‧ compression cylinder

(41)‧‧‧ gas storage seat

(411) (412) (413) ‧ ‧ Manifold

(42) ‧‧‧Bottom

(43) ‧ ‧ openings

(5) ‧‧‧ piston body

(51)‧‧‧ piston rod

(52) ‧ ‧ end

(61)‧‧‧First gear

(62) ‧‧‧second gear

(63)‧‧‧ crank body

(631)‧‧‧ shaft

(632)‧‧‧ linkage

(633)‧‧‧Locker

(7)‧‧‧Motor

(71)‧‧‧ mandrel

(8) ‧ ‧ bearings

(81) ‧ ‧ outer wheel

(811) ‧‧ ‧ flat cut

(812)‧‧‧Bump

(813)‧‧‧ Notch

(82) ‧ ‧ inner wheel

(83)‧‧‧Metal sleeve

(830) ‧‧‧ outside

(831) ‧‧ ‧ flat cut

(91)‧‧‧Transport hose

(92)‧‧‧Safety valve

(93) ‧ ‧ pressure gauge

First Fig.: An exploded view of the components of the air compressor of the present invention.

Second figure: is a partial enlarged view of the first figure.

Third: A plan view of a bearing of the present invention disposed on a base.

Figure 4 is a block diagram of the air compressor of the present invention.

Figure 5: is a cross-sectional view of the fourth figure and shows that some of the components have been removed to understand the state of the bearing in the base.

Figure 6 is a plan view showing a bearing and a base in accordance with another embodiment of the present invention.

Figure 7 is a plan view showing a bearing and a base in accordance with another embodiment of the present invention.

Figure 8 is a perspective view of a metal sleeve according to another embodiment of the present invention.

Figure IX: An exploded view of the components of a conventional air compressor.

Figure 10: A plan view of the ninth figure, showing the movement state of the piston rod in an imaginary line.

Figure 11 is a schematic view showing the rotational movement of the shaft and the connecting rod of the tenth figure.

Referring to the first to fifth figures, there is shown a transmission mechanism of an air compressor 2 constructed according to an embodiment of the present invention. The air compressor 2 includes a base 3 and a compression cylinder 4 coupled to the base 3. A motor 7 assembled on the base 3 and a piston body 5 that can be driven by the motor 7 to reciprocate in the compression cylinder 4.

The base 3 has a first positioning hole 31 and a second positioning hole 32. The first positioning hole 31 can fix the motor 7, and the spindle 71 of the motor 7 can extend out of the first positioning hole 31. A bearing 8 is disposed in the second positioning hole 32. The bearing 8 is composed of an outer wheel 81, an inner wheel 82 and a plurality of balls between the inner wheel 82 and the outer wheel 81 (the balls are not shown in the figure) ).

The compression cylinder 4 can be coupled to the base 3 integrally or by a connection technology. The compression cylinder 4 is connected with a gas storage seat 41 and a manifold 411, 412, 413 for outputting gas. The manifold 411 can be connected. One end of the transmission hose 91, of course, the other end can be connected to a nozzle (not shown) and connected to the item to be inflated; the manifold 412 can be applied to set a safety valve 92; the manifold 413 can be A pressure gauge 93 is provided, and the compression cylinder 4 has a lower end 42 having an opening 43.

The piston body 5 extends from the opening 43 into the compression cylinder 4, and one end of the piston body 5 has a piston rod 51, and the end 52 of the piston rod 51 extends out of the opening 43 of the compression cylinder 4.

The transmission mechanism includes a first gear 61, a second gear 62 and a crank body 63. The crank body 63 is provided with a shaft 631 and a link 632.

The motor 7 has a spindle 71 (refer to the fifth diagram) which passes through the first positioning hole 31 on the base 3 and fixes the first gear 61. a second gear 62 is coupled to a crank body 63. One end of the shaft 631 of the crank body 63 passes through the second gear 62 and is pivotally coupled to the inner wheel of the bearing 8 of the second positioning hole 32. 82, the bearing 8 is fastened to the crank body 63 by a locking member 633, and one end of the connecting rod 632 is pivotally connected to the end 52 of the piston rod 51. At this time, the first gear 61 is coupled to the second gear. 62 are engaged. After the motor 7 is operated, the first gear 61 drives the second gear 62 such that the piston body 5 reciprocates within the compression cylinder 4.

As shown in the second and third figures, the present invention is characterized in that the outer wheel 81 of the bearing 8 has a non-full circular shape, and the outer wheel 81 has a flat cut surface 811, and the second positioning hole 32 of the base 3 is provided with a corresponding one. a plane table 321 protruding from the flat section 811 of the outer wheel 81, which can tightly abut the bearing 8 fitted in the second positioning hole 32, so that the entire bearing 8 It does not cause idling or falling off in the second positioning hole 32 due to the rotational shaft power of the crank body 63, so that the movement of the piston body 5 in the compression cylinder 4 is not only smooth, but also the life of the air compressor 2 can be improved.

Referring to the sixth embodiment, another embodiment of the present invention is characterized in that the bearing 8 is composed of an outer wheel 81, an inner wheel 82 and a plurality of balls (not shown), and the outer wheel 81 is not fully circular. The outer wheel 81 has a protrusion 812, and the second positioning hole 32 of the base 3 is recessed with a notch 322 relative to the protrusion 812 of the outer wheel 81, which can be assembled in the second positioning hole 32. The bearing 8 is tightly resisted, so that the bearing 8 is not idling or falling off due to the rotating shaft power of the crank body 63, so that the movement of the piston body 5 in the compression cylinder 4 is not only smooth, and the air compressor 2 can be improved. The service life.

Referring to FIG. 7 , another embodiment of the present invention is characterized in that the bearing 8 is composed of an outer wheel 81 , an inner wheel 82 and a plurality of balls (not shown), and the outer wheel 81 is not fully circular. The outer wheel 81 has a notch 813, and the second positioning hole 32 of the base 3 has a protrusion 323 protruding from the notch 813 of the outer wheel 81, which can be assembled in the second positioning hole 32. The bearing 8 is tightly resisted, so that the bearing 8 is not idling or falling off due to the rotating shaft power of the crank body 63, so that the movement of the piston body 5 in the compression cylinder 4 is not only smooth, and the air compressor 2 can be improved. The service life.

Referring to FIG. 8 , the present invention can also be installed in the second positioning hole 32 by replacing a non-full-circular bearing 8 with a non-fully round metal sleeve 83, that is, the metal sleeve 83. The outer periphery 830 has a non-full circular shape, and the outer periphery 830 has a flat cut surface 831. Of course, the second positioning hole 32 of the base 3 can still be matched with the corresponding configuration as the second, sixth, and seventh figures are implemented. status.

In view of the preamble, the present invention provides a piston body 5 of an air compressor 2 in a compression cylinder 4 The bearing 8 fixedly coupled to the shaft 631 of the crank body 63 in the reciprocating transmission mechanism has an outer wheel 81 having a non-full circular shape, and the base 3 fixing the bearing 8 is formed to correspond. The second positioning hole 32, when the crank body 63 drives the piston body 5 to reciprocate in the compression cylinder 4, the bearing 8 does not idling or fall off due to the rotating shaft power of the crank body 63, so that the piston body 5 is in the compression cylinder 4 The movement inside is not only smooth, but also the life of the air compressor 2 can be improved.

The foregoing is a description of the preferred embodiments of the present invention, and embodiments of the invention may be modified or modified. Therefore, obvious substitutions and modifications may be made by those skilled in the art, and will still be incorporated in the scope of the claimed invention.

(2) ‧‧‧Air compressor

(3) ‧ ‧ pedestal

(31)‧‧‧First positioning hole

(32)‧‧‧Second positioning hole

(321)‧‧‧ plane table

(4) ‧‧‧ compression cylinder

(41)‧‧‧ gas storage seat

(411) (412) (413) ‧ ‧ Manifold

(62) ‧‧‧second gear

(631)‧‧‧ shaft

(633)‧‧‧Locker

(8) ‧ ‧ bearings

(81) ‧ ‧ outer wheel

(811) ‧‧ ‧ flat cut

(82) ‧ ‧ inner wheel

(91)‧‧‧Transport hose

(92)‧‧‧Safety valve

(93) ‧ ‧ pressure gauge

Claims (2)

A transmission mechanism of an air compressor, comprising: a base having a first positioning hole and a second positioning hole; a compression cylinder coupled to the base, the compression cylinder having a lower end and an upper end thereof Connected to a gas storage seat; a piston body extending into the compression cylinder, and one end of the piston body has a piston rod, the end of the piston rod extends out of the lower end of the compression cylinder; a motor with a mandrel is assembled a first positioning hole of the base; a bearing fixed to the second positioning hole of the base; a transmission mechanism having a first gear, a second gear and a crank body, the crank body is provided a shaft and a connecting rod, the crank body can be coupled to the second gear, one end of the shaft of the crank body passes through the second gear and is coupled to the bearing of the second positioning hole, and the bearing is tightened by a lock Fixing on the crank body, and one end of the connecting rod is pivotally connected to the end of the piston rod, and the first gear train is engaged with the second gear shaft, wherein the outer wheel of the bearing has a convex column to form a non-full circle Shape configuration, and the corresponding position in the second positioning hole of the base Wheel boss and has a concave recess, whereby the entire bearing can be prevented in the idle phenomenon caused by the second positioning hole. The transmission mechanism of the air compressor according to claim 1, wherein the outer wheel of the bearing has a notch to form a non-full circular configuration, and the second positioning hole of the base corresponds to the outer wheel notch. There are protruding bumps.