JP3173160U - Compressor transmission mechanism - Google Patents

Abstract

The present invention provides a compressor and a power transmission mechanism for a compressor that enhances the stability of a piston when it moves by introducing a structure that reduces wear in a ring hole and increases the service life of the compressor and the piston.
A transmission mechanism of a compressor includes a base 3, a compression cylinder 4, a piston, a motor having a mandrel, a bearing 8, and a transmission mechanism. The base 3 has a first positioning hole 31 and a second positioning hole 32. The compression cylinder 4 is coupled to the base 3 and has a lower end portion and an upper end portion communicating with the gas chamber. The piston is extended into the compression cylinder 4, a piston rod is provided at the end, and the end of the piston rod is extended to the lower end of the compression cylinder 4. The motor is attached to the first positioning hole 31 of the base 3. The bearing 8 is fixed to the second positioning hole 32 of the base 3.
[Selection] Figure 1

Description

  The present invention relates to a transmission mechanism of a compressor, and in particular, since a bearing in the transmission mechanism of the compressor is formed in a non-perfect circle shape, even if the piston of the compressor operates at high speed in the compression cylinder, the non-perfect circle shape The present invention relates to a transmission mechanism for a compressor that prevents slipping or disengagement because the bearing is fixed to the main body.

  Please refer to FIG. 9 and FIG. As shown in FIGS. 9 and 10, the conventional compressor 1 includes a base 11, a compression cylinder 12 coupled on the base, a motor 13 attached on the base, and a compression cylinder 12 driven by the motor 13. And a piston 14 that reciprocates within. The piston 14 driven by the motor 13 performs a reciprocating motion within the compression cylinder 12 to perform gas suction, compression, pressurization, and discharge.

  In general, the motor 13 of the conventional compressor 1 reciprocates a piston by transmission of a gear mechanism 15 and a crank mechanism. The gear mechanism 15 includes a first gear (primary gear) 151 attached on the core shaft 131 of the motor 13 and a second gear (driven gear) 152 meshed with the first gear 151. The crank mechanism includes a weight block 161, an axial rod 162, and an interlocking rod 163. The shaft rod 162 has an end inserted into the second gear 152 and is positioned in the shaft hole 110 provided in the base 11. Usually, a metal sleeve or bearing 111 is disposed in the shaft hole 110. The bearing 111 has a complete circular shape. Since the end portion of the interlocking rod 163 is pivotally attached to the circular hole 143 provided on the end portion 142 of the piston rod 141 of the piston, the interlocking rod 163 is provided in an eccentric state with respect to the shaft rod 162. When the second gear 152 is driven by the first gear 151, the piston reciprocates within the compression cylinder 12.

  However, the conventional compressor 1 may adversely affect the efficiency of the compressor and shorten the service life of the compressor when the piston is deformed during the reciprocating motion in the compression cylinder 12. As a result of studying this problem, the present author has found that one of the factors is that the distance between the compression cylinder 12 and the base 11 is too long. That is, as shown in FIG. 10, the distance (D) from the center of the compression cylinder 12 to the inner edge of the base 11 is long because the gear mechanism 15 is provided between the compression cylinder 12 and the base 11. Therefore, the centrifugal movement of the interlocking rod 163 has a great adverse effect on the rotation of the shaft rod 162, and when the piston reciprocates, an uneven force is applied to the inner wall of the shaft hole 110 to which the shaft rod 162 is attached. Some parts may be worn out first. When the shaft hole 110 is worn in this way, the shaft rod 162 may not perform a circular motion at a fixed point (shown in FIG. 11A). Once such a phenomenon occurs, the rotation of the interlocking rod 163 (shown in FIG. 11C) also becomes non-circular, and when the piston valve head reciprocates within the compression cylinder 12, a deformation motion occurs (FIG. 10). ), The valve head of the piston and the bearing in the shaft hole may be destroyed and the life may be shortened.

  An object of the present invention is to provide a transmission mechanism for a compressor that enhances the motion stability of the piston and eliminates the disadvantages of the conventional compressor, and increases the service life of the compressor and the piston.

  In order to solve the above problems, according to a first embodiment of the present invention, there is provided a transmission mechanism of a compressor including a base, a compression cylinder, a piston, a motor having a mandrel, a bearing, and a transmission mechanism. 1 positioning hole and 2nd positioning hole, the compression cylinder is coupled to the base, and has a lower end portion and an upper end portion communicating with the gas chamber, and the piston is disposed in the compression cylinder. The piston rod is provided at the end, the end of the piston rod is extended to the lower end of the compression cylinder, the motor is attached to the first positioning hole of the base, and the bearing is The transmission mechanism is fixed to the second positioning hole of the base, and the transmission mechanism includes a first gear, a second gear, and a crank, and an axial rod and an interlocking rod are provided on the crank, Clan Is coupled to the second gear, and the end of the shaft rod of the crank is penetrated through the second gear and coupled to the bearing of the second positioning hole, and the bearing is It is firmly fixed to the crank, the end of the interlocking rod is pivotally attached to the end of the piston rod, the first gear and the second gear are meshed, and the outer ring of the bearing is incompletely circular And the structure corresponding to the non-perfect circular bearing provided in the second positioning hole of the base prevents the entire bearing from slipping in the second positioning hole. A featured compressor transmission mechanism is provided.

  Further, the outer ring of the bearing has a non-perfect circular shape having a cut surface, and a flat portion corresponding to the cut surface of the outer ring is protruded in the second positioning hole of the base. Is preferred.

  Further, the outer ring of the bearing has a non-perfect circular shape having a convex column, and a concave opening corresponding to the convex column of the outer ring is provided in the second positioning hole of the base. preferable.

  Further, the outer ring of the bearing has a non-perfect circular shape having a concave opening, and a convex block corresponding to the concave opening of the outer ring is protruded in the second positioning hole of the base. preferable.

  In addition, a metal sleeve is attached in the second positioning hole, and the metal sleeve has a non-perfect circular outer periphery, has a cut surface, and the second positioning hole has a corresponding flat surface. It is preferable that the part is protruded.

  The transmission mechanism of the compressor of the present invention can improve the stability when the piston moves, eliminate the disadvantages of the conventional compressor, and increase the service life of the compressor and the piston.

1 is an exploded perspective view illustrating a compressor according to an embodiment of the present invention. It is the elements on larger scale which show the compressor by one Embodiment of this invention. It is a top view which shows a state when installing the bearing of the compressor by one Embodiment of this invention in the base. It is a perspective view which shows a state when the compressor by one Embodiment of this invention is assembled. FIG. 5 is a cross-sectional perspective view showing a state when a part of a part is removed so that the state of the bearing in the base of FIG. 4 can be easily understood. It is a top view which shows a state when the bearing by other embodiment of this invention is combined with the base. It is a top view which shows a state when the bearing by other embodiment of this invention is combined with the base. It is a perspective view showing a metal sleeve according to another embodiment of the present invention. It is a disassembled perspective view which shows the conventional compressor. It is a top view which shows the motion state of the piston rod of the conventional compressor with a dotted line. It is a schematic diagram which shows the rotational motion of the axial rod and interlocking rod of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited thereby.

  Please refer to FIG. As shown in FIGS. 1 to 5, a compressor 2 of a compressor transmission mechanism according to an embodiment of the present invention includes at least a base 3, a compression cylinder 4 coupled to the base 3, and a motor 7 attached to the base 3. The piston 5 is driven by a motor 7 and reciprocates in the compression cylinder 4.

  The base 3 has a first positioning hole 31 and a second positioning hole 32 that are spaced apart from each other. The first positioning hole 31 may be fixed to the motor 7. The mandrel 71 of the motor 7 may be inserted into the first positioning hole 31. The bearing 8 is disposed in the second positioning hole 32. The bearing 8 includes an outer ring 81, an inner ring 82, and a plurality of balls (not shown) arranged between the inner ring 82 and the outer ring 81.

  The compression cylinder 4 may be integrally formed with the base 3 or coupled to the base 3. The compression cylinder 4 includes a gas chamber 41 communicating with each other and manifolds 411, 412 used for outputting gas. 413 is provided. The manifold 411 is connected to one end of the hose 91, and a nozzle (not shown) connected to the article to be injected with gas is connected to the other end. A safety valve 92 is disposed on the manifold 412. A pressure gauge 93 is disposed on the manifold 413. The compression cylinder 4 has a lower end portion 42 having an opening 43 provided at the lower end.

  The piston 5 extends from the opening 43 into the compression cylinder 4 and a piston rod 51 is provided at the end. The end 52 of the piston rod 51 extends to the opening 43 of the compression cylinder 4.

  The transmission mechanism includes a first gear 61, a second gear 62 and a crank 63. A shaft rod 631 and an interlocking rod 632 are provided on the crank 63.

  The motor 7 has a mandrel 71 (see FIG. 5) that is inserted into the first positioning hole 31 provided in the base 3 and fixed to the first gear 61. A crank 63 is coupled to the second gear 62. The end of the shaft rod 631 of the crank 63 is inserted into the second gear 62 and pivotally mounted in the inner ring 82 of the bearing 8 in the second positioning hole 32, and the bearing 8 is firmly attached to the crank 63 by the fastening member 633. To fix. The end portion of the interlocking rod 632 is pivotally attached to the end portion 52 of the piston rod 51, and the first gear 61 and the second gear 62 are engaged with each other. With this configuration, when the motor 7 is driven, the second gear 62 is driven by the first gear 61, and the piston 5 reciprocates within the compression cylinder 4.

  Please refer to FIG. 2 and FIG. As shown in FIGS. 2 and 3, the feature of the present invention is that the outer ring 81 of the bearing 8 has a non-perfect circular structure having a cut surface 811. A flat surface portion 321 corresponding to the cut surface 811 of the outer ring 81 is provided in a projecting manner in the second positioning hole 32 of the base 3. Since the flat portion 321 allows the bearing 8 to be in close contact with the second positioning hole 32 of the base 3, the bearing 8 is caused to idle or disengage within the second positioning hole 32 by the power of the rotating shaft of the crank 63. Can be prevented. Therefore, not only can the piston 5 be moved smoothly in the compression cylinder 4, but also the service life of the compressor 2 can be extended.

  Please refer to FIG. As shown in FIG. 6, a bearing 8 according to another embodiment of the present invention includes an outer ring 81, an inner ring 82, and a plurality of balls (not shown). The outer ring 81 has a non-perfect circular structure having a convex column 812. A concave opening 322 corresponding to the convex column 812 of the outer ring 81 is recessed in the second positioning hole 32 of the base 3, and the bearing 8 is brought into close contact with the second positioning hole 32 by this concave opening 322, The bearing 8 is prevented from idling or coming off due to the power of the rotating shaft 63. Thereby, not only can the movement of the piston 5 in the compression cylinder 4 be made smooth, but also the service life of the compressor 2 can be extended.

  Please refer to FIG. As shown in FIG. 7, a bearing 8 according to another embodiment of the present invention includes an outer ring 81, an inner ring 82, and a plurality of balls (not shown). The outer ring 81 has a non-perfect circular structure having a concave opening 813. In the second positioning hole 32 of the base 3, bumps 323 corresponding to the concave openings 813 of the outer ring 81 are projected, and the bearings 8 are brought into close contact with the second positioning holes 32 by the bumps 323. As a result, the bearing 8 does not slip or disengage due to the power of the rotating shaft of the crank 63, and the movement of the piston 5 in the compression cylinder 4 can be made smooth, and the service life of the compressor 2 can be extended. You can also.

  Please refer to FIG. As shown in FIG. 8, in this embodiment, a non-perfect circular metal sleeve 83 is attached in the second positioning hole 32 instead of the non-perfect circular bearing 8. That is, the outer periphery 830 of the metal sleeve 83 has a non-perfect circular structure. The outer periphery 830 of this embodiment has a cut surface 831. Of course, the second positioning hole 32 of the base 3 adopts a corresponding structure as in the embodiment shown in FIGS. Also good.

  As can be seen from the above, the present invention has a structure in which the outer ring of the bearing connected and fixed to the shaft rod of the crank in the transmission mechanism in which the piston of the compressor reciprocates within the compression cylinder has a non-circular shape. A corresponding second positioning hole is formed in the base for fixing the bearing. With this configuration, when the piston driven by the crank is reciprocated in the compression cylinder, the bearing is prevented from slipping or coming off due to the power of the rotating shaft of the crank, and the piston performs smooth movement in the compression cylinder. As well as extending the service life of the compressor.

  The preferred embodiments of the present invention have been disclosed as described above so that those skilled in the art can understand them, but these do not limit the present invention in any way. Various changes and modifications can be made without departing from the spirit and scope of the present invention. Accordingly, the scope of the utility model registration claim of the present invention should be broadly interpreted including such changes and modifications.

1 compressor 2 compressor 3 base 4 compression cylinder 5 piston 7 motor 8 bearing 11 base 12 compression cylinder 13 motor 14 piston 15 gear mechanism 31 first positioning hole 32 second positioning hole 41 gas chamber 42 lower end 43 opening 51 piston Rod 52 End portion 61 First gear 62 Second gear 63 Crank 71 Mandrel 81 Outer ring 82 Inner ring 83 Metal sleeve 91 Hose 92 Safety valve 93 Pressure gauge 110 Shaft hole 111 Bearing 131 Core shaft 141 Piston rod 142 End portion 143 Circular hole 151 First gear 152 Second gear 161 Weight block 162 Shaft rod 163 Interlocking rod 321 Flat portion 322 Concave opening 323 Bump 411 Manifold 412 Manifold 413 Manifold 631 Shaft rod 632 Interlocking rod 633 Fastening member 811 Cut surface 81 Convex pillars 813 凹口 830 outer circumference 831 cut surface

Claims (5)

A transmission mechanism of a compressor including a base, a compression cylinder, a piston, a motor having a mandrel, a bearing, and a transmission mechanism,
The base has a first positioning hole and a second positioning hole;
The compression cylinder is coupled to the base, and has a lower end portion and an upper end portion communicating with the gas chamber,
The piston is extended into the compression cylinder, a piston rod is provided at the end, and the end of the piston rod is extended to the lower end of the compression cylinder,
The motor is attached to the first positioning hole of the base;
The bearing is fixed to the second positioning hole of the base;
The transmission mechanism includes a first gear, a second gear, and a crank. An axial rod and an interlocking rod are provided on the crank, and the crank is coupled to the second gear. An end of the shaft rod extends through the second gear and is coupled to the bearing of the second positioning hole, and the bearing is firmly fixed to the crank by a fastening member. Is pivotally attached to the end of the piston rod, and the first gear and the second gear mesh with each other,
The outer ring of the bearing has a non-perfect circular structure, and the whole bearing has the second positioning hole by a structure corresponding to the non-perfect circular bearing provided in the second positioning hole of the base. Compressor transmission mechanism characterized by preventing idling inside. The outer ring of the bearing has a non-perfect circular shape having a cut surface;
2. The compressor transmission mechanism according to claim 1, wherein a flat portion corresponding to the cut surface of the outer ring is protruded in the second positioning hole of the base. The outer ring of the bearing is a non-perfect circle having a convex column,
2. The compressor transmission mechanism according to claim 1, wherein a concave opening corresponding to the convex column of the outer ring is provided in the second positioning hole of the base. The outer ring of the bearing is a non-perfect circle having a concave opening,
2. The compressor transmission mechanism according to claim 1, wherein a convex block corresponding to a concave opening of the outer ring is provided in the second positioning hole of the base. A metal sleeve is attached in the second positioning hole,
The metal sleeve has a non-circular outer periphery, a cut surface,
The transmission mechanism for a compressor according to claim 1, wherein the second positioning hole has a corresponding flat surface projecting.