TWM513314U - Oiler with flow regulation - Google Patents

Description

Oil flow regulator with flow regulation

This creation relates to the field of flow regulation, and in particular to a fuel injector with flow regulation.

The utility model patent No. 2338590 discloses an automobile oiler comprising a fuel injection cylinder, a push rod, a cylinder cover, a piston, a grease fitting and a screw cover. One end of the oil filling cylinder locks the cylinder cover, and the other end is firmly fixed to the grease fitting, and the grease fitting is locked and closed by the screw cover. The push rod passes through the cover, one end of which is deep into the oil filling cylinder and connected to the piston, and the other end exposes the oil filling cylinder and firmly holds a handle.

When using, remove the screw cap from the nozzle. The push rod is forced to reciprocate the piston inside the oil filling cylinder, and performs oil filling operation through the oil filling nozzle. After the oil filling operation is completed, the screw cap is locked to the grease fitting to prevent oil leakage.

However, the screw cap locks the grease fitting or removes it, not only repeatedly performs the screwing action, but also the screw cap is easily lost when it leaves the grease fitting, and it is necessary to improve.

In view of this, the main purpose of the new oiler is to use the flow adjustment structure to solve the drawbacks of the prior art regarding the easy loss of parts.

Due to the above object, the oil injector of the present invention comprises: a straight tube having a front end portion, the front end portion having an inlet and outlet, the inlet and outlet being in communication with a space inside the cylinder located inside the straight cylinder; and a piston device inserted into the tube Internal space and relatively straight reciprocating Movement; a flow adjustment mechanism that includes a cover and a valve needle. The cover has a through hole and a valve tube surrounding the through hole. The valve needle has an open end, a closed end, a first-class passage and a side hole formed at a closed end of the valve needle. The flow passage is formed inside the valve needle and leads to the outside through the open end and the side hole.

When the cover covers the front end of the straight cylinder, the through hole faces the inlet and outlet, and the valve needle is combined with the valve tube to reciprocally displace between the open and closed positions. Wherein, the valve tube forms an internal thread near the through hole, and an external thread is formed on the outside of the valve needle, and the valve needle and the valve tube are maintained in a screw relationship through the inner and outer threads.

In the open position, the closed end of the valve needle is away from the through hole of the valve seat, and the open end of the valve needle is communicated with the inlet and outlet of the front end portion of the straight cylinder through the flow passage. In the closed position, the through hole of the valve seat is blocked by the closed end of the valve needle.

Whether it is the open or closed position, the valve needle is not necessary to leave the cover, effectively solving the drawbacks of the prior art regarding the easy loss of parts.

Then, based on the detailed description of the related embodiments, the techniques, means and functions employed are described. It is believed that the above objects, structures and features of the present invention can be obtained from a deep and specific understanding.

10‧‧‧ piston device

12‧‧‧Piston ring

20‧‧‧ piston seat

24‧‧‧ ring film

26‧‧‧ Oiler

30‧‧‧Previous

40‧‧‧ After the plate

50‧‧‧ pole

60‧‧‧ Straight

61‧‧‧Tail cover

62‧‧‧Intra-tube space

63‧‧‧ center hole

64‧‧‧ front end

65‧‧‧ stomata

66‧‧‧ Entrance

68‧‧‧ mouth

70‧‧‧Flow adjustment mechanism

71‧‧‧ internal thread

72‧‧‧ cover

73‧‧‧ recess

74‧‧‧ valve seat

76‧‧‧ valve tube

78‧‧‧through hole

80‧‧‧ valve needle

81‧‧‧ external thread

82‧‧‧Open end

83‧‧‧O-ring

84‧‧‧closed end

86‧‧‧ flow path

88‧‧‧ side holes

S‧‧‧ distance

Figure 1 is a cross-sectional view of a preferred embodiment of the present oil injector.

Fig. 2 is a partial enlarged view of the oiler of Fig. 1.

Figure 3 is an exploded view of the flow regulating mechanism.

Figures 4 and 5 are continuous operation diagrams of the flow regulating mechanism.

Figure 6 is an exploded view of the piston device.

Figure 7 is a combination view of the piston device.

Please refer to Figures 1 and 2 to illustrate the specific structure of the oiler 26, which is A piston device 10, a straight cylinder 60 and a flow regulating mechanism 70 are used for oil extraction or oiling operations.

The straight tube 60 has a front end portion 64 and a barrel opening 68. An inlet and outlet 66 is formed in the center of the front end portion 64. The outlet 66 has a smaller diameter than the tubular opening 68, and the two are not at the same end of the straight cylinder 60. The inside of the straight cylinder 60 is defined as a cylindrical inner space 62 that leads to the outside via the inlet and outlet 66 and the tubular opening 68.

As shown in Figures 6 and 7, the piston assembly 10 is comprised of a piston ring 12, a piston seat 20 and a rod 50. The piston seat 20 includes a front disc 30 and a rear disc 40 for clamping the piston ring 12. The rod 50 passes through a ring piece 24 and the rear plate 40 and is locked to the front plate 30 to prevent the front and rear plates 30, 40 from separating.

Looking back at Figures 1 to 3, the required oil is poured from the mouth 68 of the straight cylinder 60 into the inner space 62 of the cylinder. The piston device 10 is placed in a straight cylinder 60 and then a tail cap 61 is locked at the barrel opening 68 of the straight cylinder 60. The tail cap 61 has a central hole 63 and a two-hole 65 which penetrates the wall surface of the tail cap 61, and these air holes 65 are located around the center hole 63.

Therefore, the rod 50 passes through the center hole 63 of the tail cap 61 and penetrates into the barrel inner space 62 of the straight cylinder 60, driving the piston seat 20 to engage the piston ring 12 to squeeze the oil through the inlet and outlet 66 of the front end portion 64. At the same time, outside air enters the inner space 62 of the straight cylinder 60 through the air vent 65, filling the space of the piston ring 12 to the tail cover 61.

When the rod 50 is pulled out in the reverse direction, the air flowing into the straight cylinder 60 is pressed by the piston seat 20 in cooperation with the piston ring 12 to be discharged from the air hole 65 without affecting the drawing or oiling operation of the oiler 26.

The flow regulating mechanism 70 includes a cover 72 and a valve needle 80 coupled to the cover 72.

The cover 72 has a valve seat 74, and a through hole 78 and a valve tube 76 are formed in the center of the valve seat 74. The valve tube 76 surrounds the periphery of the through hole 78 and is designed to be integral with the valve seat 74. The valve seat 74 is surrounded by the valve tube 76 to form a recess 73, and the through hole 78 is located at the recess 73. central. The valve tube 76 forms an internal thread 71 near the through hole 78. When the cover 72 is covered and locked to the straight tube 60 near the front end portion 64, the valve seat 74 conforms to the front end portion 64 such that the through hole 78 faces the inlet and outlet 66.

In addition, the valve needle 80 has an open end 82, a closed end 84 and a flow passage 86 formed in the interior of the valve needle 80. The flow passage 86 is formed via the open end 82 and a side hole formed in the valve needle 80 adjacent to the closed end 84. 88 to the outside world. An external thread 81 is formed on the outside of the valve needle 80. Through the screwing relationship between the inner and outer threads 71 and 81, the needle 80 is coupled to the valve tube 76 to reciprocally displace between the open and closed positions. The closed end 84 of the valve needle 80 is a convex curved surface that is generally shaped to conform to the pocket 73.

As shown in Figures 1 and 4, in the open position, the closed end 84 of the valve needle 80 is remote from the through hole 78 of the valve seat 74, and the open end 82 of the valve needle 80 and the forward end portion 64 of the straight cylinder 60 are transmitted through the flow passage 86. The entrances and exits 66 are connected. Of course, the distance between the closed end 84 and the through hole 78 of the valve seat 74 is proportional to the flow rate of the oil through the through hole 78 of the valve seat 74: the closed end 84 is close to the through hole 78 and the oil flow rate is small; the closed end 84 It is far from the through hole 78 and has a large oil flow.

As shown in Fig. 5, in the closed position, the through hole 78 of the valve seat 74 is blocked by the closed end 84 of the valve needle 80, so that the flow path 86 of the valve needle 80 is no longer kept in a clear state. Of course, an O-ring 83 is placed outside the valve needle 80 and touches the inner wall of the valve tube 76 to help prevent oil leakage from the flow regulating mechanism 70.

Whether in the open or closed position, the valve needle 80 is not necessary to leave the cover 72, and there is no problem of missing parts.

70‧‧‧Flow adjustment mechanism

71‧‧‧ internal thread

72‧‧‧ cover

73‧‧‧ recess

74‧‧‧ valve seat

76‧‧‧ valve tube

78‧‧‧through hole

80‧‧‧ valve needle

81‧‧‧ external thread

82‧‧‧Open end

83‧‧‧O-ring

86‧‧‧ flow path

84‧‧‧closed end

88‧‧‧ side holes

Claims (3)

A flow regulating oiler includes: a straight tube (60) having a front end portion (64), the front end portion (64) having an inlet and outlet (66), and the inlet and outlet (66) and an inner portion of the straight tube (60) The inner space (62) is in communication; a piston device (10) is inserted into the inner space (62) to reciprocate relative to the straight cylinder (60); a flow regulating mechanism (70) comprising: a cover (72) ) having a through hole (78) and a valve tube (76) surrounding the through hole (78); a valve needle (80) having an open end (82), a closed end (84), and a first-class track ( 86) with a side hole (88) formed at the valve needle (80) adjacent to the closed end (84), the flow path (86) being formed inside the valve needle (80) and via the open end ( 82) and the side hole (88) leads to the outside; when the cover (72) covers the front end portion (64) of the straight tube (60), the through hole (78) faces the inlet and outlet (66), and the valve needle (80) is combined with the valve The tube (76) reciprocates between the open and closed positions; in the open position, the closed end (84) of the valve needle (80) is away from the through hole (78) of the valve seat (74) and passes through the flow path ( 86) connecting the open end (82) of the valve needle (80) to the inlet and outlet (66) of the front end portion (64) of the straight cylinder (60); in the closed position Closed end of the valve seat (74) through hole (78) is a valve needle (80) (84) blocked. The flow-regulating oiler according to the first aspect of the patent application, wherein the valve tube (76) forms an internal thread (71) near the through hole (78), the valve needle (80) An external thread (81) is formed on the outside, and the valve needle (80) is maintained in a screw relationship with the valve tube (76) through the inner and outer threads (71, 81). The flow-regulating oiler according to the second aspect of the patent application, wherein the valve seat (74) is surrounded by the valve tube (76) to form a recess (73), the through hole (78) is located in the recess (73) Centrally, the closed end (84) of the valve needle (80) is a convex curved surface that substantially conforms to the recess (73).