JPH0525637B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention provides a method for adjusting the installation position of an oil feeder such as an injection pump when installing an oil feeder such as an injection pump on the engine body in an internal combustion engine, particularly a diesel engine such as an automobile. This relates to adjustment tools used for.

2. Description of the Related Art For example, in a diesel engine of an automobile, as shown in FIGS. Fuel is injected and supplied to the combustion chamber 5 through supply pipes connected to a plurality of pipe connection ports 4 . By the way, the timing of fuel injection into the fuel chamber 5 of the engine body 1 is determined by connecting the drive shaft on the engine body 1 side and the drive camshaft on the injection pump 3 side to a crank gear in a timing gear box 6 attached to the engine body 1. After coarse adjustment is made by connecting through a gear mechanism such as an idle gear and a timer gear, further fine adjustment is made by adjusting the mounting angle position of the injection pump 3.

The timing of fuel injection by the injection pump 3 is usually confirmed in the following manner. First, the lower end flange portion 3a of the injection pump 3 is temporarily secured to the timing gear case 6 with bolts 7 to hold the injection pump 3 upright.
After that, connect a transparent oil pipe (not shown) filled with oil to the pipe connection port 4 on the top surface of the injection pump 3, and connect an air pipe (not shown) to the pipe connection port 9 on the side surface of the injection pump 3. ) while supplying air into the injection pump 3 through the air pipe, the injection pump 3 is rotated toward the engine main body 1 side. During rotation of the injection pump 3, bubbles are generated in the oil in the oil pipe by the supplied air, and when the bubbles stop, the time point at which the bubbles stop is taken as a visual cross-section and is defined as the fuel injection timing. When the fuel injection timing is confirmed in this way, the rotation of the injection pump 3 is stopped at the time of confirmation, and then the flanges 3a, 3
b, 3c are tightened with a plurality of bolts 7, 9, 10 to fix the injection pump 3 to the timing gear case 6.

Problems to be Solved by the Invention Conventionally, operators manually rotated the injection pump 3 and positioned it at the fuel injection position based on their years of experience and intuition, making the work extremely complicated. In addition, when the rotation is stopped or the bolts are tightened and fixed, the injection pump 3 moves slightly due to a slight external force, and the injection pump 3 can be accurately fixed at the fuel injection position corresponding to the fuel injection timing. Nakatsuta.

Means for Solving the Problems The present invention has been proposed in view of the above-mentioned problems, and includes a locking pin 18 that is mounted substantially perpendicularly to the mounting base 11 and that is locked to the engine body 1.
an eccentric cam 22 that is rotatably supported on the mounting base 11 and presses the oil feeder 3 toward the engine body 1; Cam 22
The device is composed of a ratchet mechanism 23 for intermittent rotational movement in one direction, and an operating rod 37 for operating the ratchet mechanism 23.

Function The locking pin at the end of the arm is locked to the engine body, and the ratchet mechanism rotates the eccentric cam in one direction intermittently, and the intermittent eccentric rotational movement of the eccentric cam temporarily fixes the lower end. The oiler is held upright and rotated at a small angle towards the engine body.

Embodiment FIGS. 1 to 4 show an embodiment of the adjuster a according to the present invention. In the same figure, 11 is a mounting base, which includes a U-shaped main body 12 and a main body 1.
It is manufactured into a frame shape with side plates 13 and 14 fixed to side end surfaces 12a and 12b of 2 with bottles or the like. Reference numeral 15 denotes an arm consisting of a rod-shaped arm body 16 and a plate-shaped mounting plate 17 fixed to the bottom surface of the distal end of the arm body 16. It is fixed to the side end surface 12a of the main body 12 and the end surfaces 13a, 14a of the side plates 13, 14, and is mounted perpendicularly to the mounting base 11. 18, 18 are small holes 1a, 1b for cooling water circulation, which are bored in the upper surface 1a of the engine main body 1, as shown in FIGS. 5 and 6.
This is a locking pin that is inserted and locked into the locking pin 1.
8 and 18 are screwed through the mounting plate 17 of the arm 15 and project downward. 19 is bearing 20, 20
A rotation shaft is rotatably supported through the mounting base 11 via a spring pin 21 attached to one end 19a, and is prevented from coming off. Reference numeral 22 denotes a disc-shaped eccentric cam which is fixedly supported on the central part of the rotating shaft 19 and arranged in the mounting base 11. The eccentric rotation movement of this eccentric cam 22 temporarily fixes the lower end and holds it upright. An injection pump 3 serving as an oil feeder is rotated at a small angle toward the engine body 1 side. 23 is a ratchet mechanism for intermittently rotating the eccentric cam 22 in one direction;
3 is a ratchet wheel 24 provided approximately at the center of the rotating shaft 19 adjacent to the eccentric cam 22; and the mounting base 1.
1, and a claw member 26 that is pivotally supported in a swingable manner by a fixed shaft 25 that is supported through the upper part of 1. The claw member 26 has a substantially three-pronged shape having a claw piece 27 and a release piece 28 at the lower end.
A tooth portion 29 is formed on the lower surface of the tooth portion 7 and engages with the ratchet wheel 24 in a removable manner. 30 is a fixing plate screwed onto a predetermined portion of the outer surface of the main body 12 of the mounting base 11;
The lower end edge 30a of the fixing plate 30 is connected to a cutout rod 3 formed on the outer end protrusion 25a of the fixing ring 25.
1 to prevent the fixed shaft 25 from being removed or rotated. 32 and 33 are the end surface 12c of the main body 12 of the mounting base 11 and the release piece 2 of the claw member 26.
Mounting pins fixed to the outer surface 28a of 8, 3
Reference numeral 4 denotes a spring compressed between the mounting pins 32 and 33, and the tensile force of this spring 34 always urges the claw member 26 clockwise around the fixing shaft 25, so that the claw member 26 is The teeth 29 are brought into mesh with the jaws 24. 35 is the mounting base 11
A pivot shaft 36 is attached horizontally to the arm body 11 in the vicinity of the pivot shaft 36, and the fork portion 36a at the upper end is rotatably attached to the pivot shaft 35. 22 cam surface 22
The eccentric cam 22 is suspended and held directly above the eccentric cam 22 so that it is always in sliding contact with the eccentric cam 22. The contact surface 36d of the push plate 36 with the injection pump 3 is formed into an arcuate surface in order to prevent the outer wall surface 3d of the injection pump 3 from being damaged. Reference numeral 37 denotes an operating rod attached to the other end 19b of the rotating shaft 19 via a cylinder 38. When the operating rod 37 is rotated clockwise,
Since the ratchet wheel 24 rotates intermittently in the clockwise direction while being prevented from operating by the pawl member 26, the ratchet wheel 24
Then, the eccentric cam 22 coaxially supported rotates eccentrically, and its cam surface 22a protrudes minute by minute toward the push plate 36, causing the push plate 36 to rotate counterclockwise about the pivot 35. .

Next, the procedure for using the adjuster according to the present invention will be explained with reference to FIG. 5 as follows.

After aligning the side flange portions 3a, 3b, and 3c of the injection pump 3 with the side surface 6a of the timing gear box 6 attached to the engine body 1, the lower end flange portion 3a is temporarily attached to the timing gear box 6 with bolts 7. Stop the above injection pump 3
is temporarily held so as to be rotatable toward the engine body 1 side around the engine around the bolt 7, and slightly inclined outward. After that, as shown in FIG. 5, the locking pin 18 at the tip of the arm 15 of the adjuster a
18 is a small hole 1b in the upper surface 1a of the engine body 1;
At the same time, the mounting plate 17 is placed on the upper surface 1a. On the other hand, a contact surface 36d of a push plate 36 rotatably mounted vertically on the arm 15 is opposed to an outer wall surface 3d of the injection pump 3. Then, when the operating rod 37 located below is rotated clockwise, the eccentric cam 22 and the ratchet wheel 24 of the ratchet mechanism 23 coaxially therewith are rotated via the rotation shaft 19.
rotates. At this time, the tooth portion 29 of the claw member 26
is always urged toward the ratchet wheel 24 by the spring 34, so the ratchet wheel 24 intermittently rotates clockwise while being prevented from rotating counterclockwise. As a result, the eccentric cam 22 intermittently rotates eccentrically, and the cam surface 22a of the eccentric cam 22 moves against the sliding surface 3 of the push plate 36.
It protrudes minute by minute to the push plate 36 side while making sliding contact with 6c. As the cam surface 22a of the eccentric cam 22 protrudes toward the push plate 36, the push plate 36 is pushed and rotated around the pivot 35 toward the engine body 1,
The outer wall surface 3d of the injection pump 3 is the contact surface 3 of the push plate 36
Pressed at 6d. Then, the injection pump 3 rotates clockwise by small angles around the lower end bolt 7. When the fuel injection timing is confirmed during rotation of the injection pump 3, the rotation of the operating rod 37 is immediately stopped at the confirmation point, and the injection pump 3 is operated to perform the desired fuel injection according to the fuel injection timing. position. After that, tighten the flange parts 3a, 3b, 3c on the side of the injection pop 3 with the bolts 7, 9, 10.
The injection pump 3 is screwed onto the timing gear box 6 to hold and fix the injection pump 3 in a fixed position. Then, when the injection pump 3 is fixed, the claw member 26
After pushing the release piece 28 to release the engagement between the teeth 29 and the ratchet wheel 24, the operating rod 37 is returned to its original position, and the adjuster a is removed from the engine body 1.

Although the above embodiment describes the case where the installation position of the oil filler is adjusted in a diesel engine of an automobile, the adjustment tool according to the present invention is not limited to this, and the adjustment tool according to the present invention can be used to adjust the installation position of the oil filler in any internal combustion engine. It can be used when adjusting.

Effects of the Invention The adjustment tool according to the present invention uses a ratchet mechanism to rotate the eccentric cam that presses the oil feeder toward the engine body intermittently, so that the oil feeder attached to the engine body can be rotated by small angles. Is possible. As a result, when positioning the fuel supply device at a fuel injection position corresponding to the fuel injection timing, there is no slight movement, and accurate positioning can be achieved. Moreover, the positioning of the oil supply device can be performed easily and quickly, and work efficiency can be greatly improved.

[Brief explanation of drawings]

FIG. 1 is a partially vertical front view of the adjuster according to the present invention, FIG. 2 is a vertical left side view, and FIG. 3 is a right side view.
FIG. 4 is a cross-sectional bottom view, and FIG. 5 is an explanatory diagram showing how to use the adjustment tool. 6 to 8 show the oil supply device attached to the engine body, with FIG. 6 being a plan view, FIG. 7 being a front view, and FIG. 8 being a right side view. 1...Engine body, 3...Oil feeder, 11...
Mounting base, 15...arm, 18, 18...locking pin, 22...eccentric cam, 23...ratchet mechanism, 37...operating rod.

Claims (1)

[Claims] 1 an arm that is mounted substantially orthogonally to the mounting base and has a locking pin at its tip that is locked to the engine body; and an arm that is rotatably supported on the mounting base;
and an eccentric cam that presses the oil feeder toward the engine body, a ratchet mechanism that is attached to the mounting base and that rotates the eccentric cam intermittently in one direction, and an operating rod that operates the ratchet mechanism. A lubricator installation position adjustment tool featuring: