KR950005828B1 - Valve stem seal exchanger of car - Google Patents

Abstract

The apparatus makes it easy and speedy to exhange the valve stem seals without separating a cylinder head from a cylinder block so that it can reduce the exchange time and improve the work efficiency. It comprises a rectangular support(10) having a multiple of assembly holes(10-1) and a sliding guide groove(10-2); an actuator(11) slidably connected to the support(10); a slider(12) having a guide(12-1); a supporting body(13) having a push assembly part(13-1) and assembly holes(13-2,3); a rod(14) having a rotary pressing cam(14-1) and a hooking means(14-2).

Description

Automotive Valve Stem Seal Exchanger

1 is a configuration diagram of a cylinder head and a valve mechanism.

2 is a state of use of a conventional valve spring compressor.

3 is a configuration diagram of the valve stem seal exchanger according to the present invention, (a) is a perspective view of the disassembled state, (b) is a perspective view of the assembled state.

Figure 4 (a) and (b) is a state of use of the valve stem seal exchanger according to the present invention.

* Explanation of symbols for main parts of the drawings

2: Valve stem seal 4: Valve

4-1: Valve stem 6: Valve guide

8: cylinder head 8-1: screw hole

10: support member 10-1: fastening hole

10-2: sliding guide portion 11: operating member

12: sliding body 12-1: sliding guide portion

13: support 13-1: pressing body coupling portion

13-2: support rod coupling hole 13-3: fastening hole

14: support rod 14-1: pressure cam

14-2: Hanging piece 14-3: Hinge pin

14-4: groove 15: pressing medium

15-1: binding hole 15-2: binding part

16: operation lever 16-1: handle

16-2: protrusion 17: pressing body

17-1: Incision 17-2: Spring Sheet Compression Piece

17-3: Body 17-4: Seating recess

18: valve spring seat 19: valve spring lock pin

20: valve spring 21: can sprocket

22: Adapter 22-1: Dual pin

23: timing belt 24: cam shaft mounting portion

The present invention relates to a valve stem seal exchanger for valve spring compression of an automobile engine, and more particularly, in order to replace a valve stem seal of a valve mechanism as in the prior art, all the peripheral parts of the cylinder head are removed and the cylinder head is removed from the cylinder block. The valve stem seal exchanger, which is a special tool of the present invention, to disassemble the valve mechanism on the cylinder head after disassembling the valve mechanism, thereby quickly and easily without removing the cylinder head and cylinder block. A valve stem seal exchanger for automobiles that allows for replacement of valve stem seals.

In general, the valve stem seal 2 of the valve mechanism is made of rubber. As shown in FIG. 1 of the accompanying drawings, the valve stem seal 2 is press-fitted to the upper end of the valve guide 6 for guiding the vertical movement of the valve 4. The inflow of engine oil, which lubricates the contact surface between the stem (4-1) and the valve guide (6), is to be interrupted. Such a valve stem seal (2) is a valve stem (4-) Since friction contact is continued with 1), the contact surface is easily worn, so it needs to be replaced with new one after a certain time.

As described above, a conventional work procedure for replacing the valve stem seal 2 using a long period of time includes degassing the cylinder head 8 and the cylinder block peripheral parts such as plugs, plug cables, and air cleaners. Removal process of rocker cover, rocker arm, and shaft assembly mounted on the upper part of cylinder) → Cylinder head (8) and timing belt and pulley assembly removal process mounted on one side of cylinder block → Cylinder head (8) and cylinder block The process of disassembling the valve stem on the cylinder head 8 is followed by the replacement of the valve stem seal 2 and the reassembly of the valve stem seal 2 to complete the replacement of the valve stem seal 2. .

However, in order to replace one small valve stem seal 2 as described above, the entire cylinder head 8 and its peripheral parts must be dismantled and reassembled. Therefore, a considerable amount of time is required and work is complicated by the complexity of the structure. Without the difficult and special tools, the work is impossible and there are always problems such as deterioration of the worker's work efficiency and deterioration of the vehicle's reliability to the customer due to various factors.

The present invention has been devised in view of such a point, and the valve stem seal exchanger of the present invention is installed on the upper surface of the cylinder head with only the rocker gerber, rocker arm, and shaft of the upper portion of the cylinder head being relatively easy to remove. The purpose of the present invention is to provide a valve stem seal exchanger for an automobile that can be easily replaced by a valve stem seal in a short time.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention provides a support member (10) fixed to the upper surface of the cylinder head (8) and the operating member (11) slidingly coupled to the night member (10), and the adapter 22 for mounting the cam sprocket (21) It is made, the support member 10 is made of a rectangular plate-like structure having a plurality of fastening holes (10-1) and the sliding guide recesses (10-2) on both sides, the operating member (11) or less It has a sliding body 12 having a sliding guide convex portion 12-1 at its portion, and a pressing body coupling portion 13-1 at both ends thereof, and a support rod coupling hole 13-2 and a fastening hole at both the center and both sides thereof. 13-3, the support 13, the support rod 14 having the rotary pressure cam 14-1 and the engaging piece 14-2 at the upper and lower ends, respectively, and the binding hole 15-1 at the central portion. 2 spring seats having a pressing medium 15 having a fastening portion 15-2 at both ends, an operating lever 16 with a handle 16-1, and a cutout 17-1. Sphere with pressing body (17) of crimping piece (17-2) The sliding body 12 is coupled to the bottom surface of the support 13 by using the upper surface thereof, and the pressing body 17 is inserted into and mounted on both pressing body coupling parts 13-1, and the support rod is disposed on the upper surface of the support body 13. (14) is vertically installed by using the engaging piece 14-2 at the lower end thereof, and the push stopper 15 is fitted into the support rod l4, and is placed side by side with the support 13; The lever 16 has a structure that is attached to the pressing cam 14-1 of the upper end of the support rod 14, the operation member 11 is coupled to the upper end of the support member 10 through the sliding body 12 At the same time it can slide on it.

Here, the plurality of fastening holes 10-1 formed in the support member 10 are screwed on the cylinder head 8 to fix the support member 10 to the upper surface of the cylinder head 8. 8-1) (for example, a screw through hole for fastening the bolt to the upper portion of the cylinder head 8 for mounting the rocker arm and the shaft assembly), and the formation position is the formation of the screw hole 8-1. It is made up of the same location. In addition, the sliding guide recesses (10-2) formed on both upper ends of the support member 10 is a V-shaped groove that is formed continuously along the longitudinal direction of the support member 10, the upper jaw of the groove is the sliding body It will act as a locking jaw so that (12) does not escape in the upward direction.

On the other hand, as described above, the support member 10 and the sliding member 12 is slipped, and as an embodiment other than the coupling is made through the convex portions (10-2, 12-1), both sides of the support member 10 Guide rail pipes each having a predetermined length along the longitudinal direction of the supporting member 10 are installed at an end thereof, and bottom surfaces of the sliding body 12 have inner diameters greater than the outer diameter of the pipe for guide rails on both sides. When the conveying pipe of a relatively short length is fused and the supporting member 10 and the sliding body 12 are coupled through a sliding contact coupling in which the conveying pipe is fitted into the outer diameter of the guide rail pipe, The valve stem seal exchanger of the invention, more specifically, can expect significant weight savings on the support member 10 and the sliding body 12 while at the same time manufacturing difficulties (e.g., the sliding guide, the iron part). (l0-2, 12-1) can be solved by the upper part of the difficulty due to the parts requiring precision processing.

In addition, the pressing body coupling portion 13-1 formed at both ends of the support 13 is a pair of two tubes having a suitable length to be fused to each of the both ends of the support 13 to form a mutual symmetry. In this case, the two paired pipes are maintained at the same distance from each other at a predetermined interval, for example, the interval between the valve mechanisms installed on the cylinder head 8 (more precisely, the pitch between adjacent valve mechanisms). As the valve is inclined, it is inclined at an angle of about 20 ° to 40 °.

In particular, the support rod coupling hole (13-2) formed through the thickness at the middle body portion of the support 13 is formed in the form of a two-hole hole that has an inner diameter from the bottom portion of the support 13 to a certain depth and the two axes The fastening hole 13-3 has a form of a counter boring hole (HOLE) for fastening a wrench bolt or the like and preventing interference from the fastening element.

In addition, the hinge pin 14-3 is coupled to both ends of the hinge pin 14-2, which is installed through the upper end of the pressure cam 14-1 formed in the upper end of the support bar 14 through the horizontal. Rotational flow is possible at the center, and the rotational flow at this time is made to draw an eccentric diagram as the pressure cam 14-1 is eccentrically coupled to one side without being coupled at its center. In addition, a groove 14-4 for mutual coupling with the operation lever 17 is formed on the outer circumference of the pressure cam 14-1, and the forming position thereof is a nose of the pressure cam 14-1, for example, The position of formation is determined at a portion of the pressing medium 15 and the pressing cam 14-1 that is in contact with each other from the accumulation portion of the pressing cam 14-1.

In addition, the pressing body 17 is made of an integral type in which two spring sheet pressing pieces 17-2, which are a kind of pipe, are vertically coupled side by side on a rectangular parallelepiped body 17-3, and each spring sheet pressing piece An incision 17-1 is formed at l7-2 to remove the valve spring lock pin 19, which is a binding medium between the valve stem 4-1 and the valve spring seat 18, and the body 17-3. The semicircular seating recess 17-4 is formed in the center of the upper surface of the upper side toward the upper side in a slightly inclined state, and the rod-shaped binding portion 15-2 constituting the both ends of the pressing medium 15 is upper part. It is intended to be seated on.

On the other hand, Iwagal is looking at the process in which each component is assembled into one integral valve stem seal exchange, as shown in (b) of Figure 3, the operating member 11 is a sliding body The support rod 14 is vertically installed at the same time as the support 12 and the support 13 are vertically interposed therebetween, and the pressing medium l5 is fitted onto the support rod 14 by using the support rod 14 to support the support rod 14. While the operating lever 16 is attached to the bushing part of the supporter 13, the pressing body 17 is inserted into both sides of the support 13 to have an integral structure, which will be described in more detail. With the forming portion of the sliding guide convex portion 12-1 down, the back surface portion, that is, the upper surface portion is in close contact with the bottom portion of the support 13, and at the same time the support rod 14 is the engaging piece 14 formed on the lower end portion -2) support rods of this support 13 When the bolt is fastened between the support body 13 and the sliding body 12 in a state where the ball 13-2 is fitted vertically so as to be fitted from the bottom, the sliding body 12, the support body 13, and the support rod 14 There is a bond between them. Here, the sliding body 12 is coupled to cross the longitudinal direction of the support 13, the forming direction of the sliding guide convex portion 12-1, the support rod 14 is the engaging piece 14-2 of the lower end It is not allowed to be removed in the upward direction, but it is also possible to rotate about its own axis.

The pressing medium 14 is horizontally inserted and coupled through the binding hole 15-1 formed at the center from the upper end of the supporting rod 14 at the mating partner, and the supporting rod is inserted after the pressing medium 15 is inserted. The pressure cam 14-1 to the upper end of the 14 is coupled to the high via the hinge pin (1-4-3). At this time, the pressing medium 15 is free to rotate around the supporting rod 14 in the state in which the center of the support rod 14 is fitted, but the pressing body 17 is coupled to both sides of the support 13 and the pressing body In a state in which the fastening portions 15-2 of both sides are seated on the seating recess 17-4 of (17), a predetermined distance (for example, the distance at this time is the maximum value of the valve spring 20 from the upper surface portion of the support 17). It is fixed position side by side with the support 17 while maintaining a rather large distance than the elastic region that can be compressed to).

In addition, the actuating lever 16 is fitted with the support bar 14 by inserting the protrusion 16-2 opposite the handle 16-1 to the groove 14-4 of the pressure cam 14-1. The coupling is made, and the pressing body 17 is inserted into the pressing body coupling part 13-1 formed on both sides of the support 13 so that the coupling is made.

The operating member 11 integrally coupled as described above is fitted in the longitudinal direction from the upper portion of the support member 10 via the sliding body 12 coupled to the lowermost portion, and the sliding member 12 in this coupled state. The sliding guide convex part 12-1 and the sliding guide recess 10-2 of the support member 10 are used to slide along the longitudinal direction of the support member 10.

Looking at the operation process for replacing the valve stem seal (2) using the valve stem seal exchange of the present invention configured as described above are as follows.

First, remove the air cleaner, various plugs, crank angle sensor, and the like, which are associated with the cylinder head 8, and then install the rocker arm cover, rocker arm, and camshaft assembly constituting the upper portion of the cylinder head 8; Remove.

On the other hand, as shown in (b) of FIG. 4, the intake and exhaust cam sprockets 21 mounted on and supported by the cam shaft at the same time as the cam shaft are removed can replace the role of the cam shaft. The adapter 22 is used to mount as before. At this time, it is important that the timing belt 23 on the cam sprocket 21 is kept in the first hanging state, that is, the ignition timing marking that matches the ignition timing does not deviate. This is because the valve 4 falls when the valve mechanism is separated. This is associated with the top dead center position of the piston to prevent it.

Here, the adapter 22 is formed in a single axis form having a dual pin 22-1 on one side of the cross section, and is mounted to the can shaft mounting portion 24 on the cylinder head 8 to be integral with the cam sprocket 21. When the adapter 22 and the cam sprocket 21 are combined with each other, the rigid dual pins 22-1 are inserted into the dual pin installation grooves (not shown) on the cam sprocket 21. It is designed to maintain the sign. In order to mount the cam sprocket 21 using the adapter 22, the timing belt 23 is loosened by adjusting a hydraulic tensioner (not shown) which automatically adjusts and maintains the tension of the timing belt 23. Remove the camshaft and replace it with the adapter 22. At this time, the adapter 22 is fixed to the rotating material using the camshaft bearing cap, and the cam sprocket 21 and the timing belt 23 are not separated from each other. Tighten tightly

In this way, after removing all the components of the upper cylinder head 8, and after remounting the cam sprocket 21, the valve stem seal exchanger of the present invention is installed on the upper portion of the cylinder head (8). That is, the bearing member 10 of the valve stem chamber exchanger is mounted so as to be joined to the entire length of the cylinder head 8, and then the fastening hole 10-1 formed in the support member 10 and the screw hole on the cylinder head 8 are mounted. (8-1) is fastened by bolts, and fixedly installed so as not to move the support member 10, and then slides the integrated linear member 11 of the integrated member from the front or rear of the support member (10). .

In this state in which the operation member 11 is coupled to the support member 10, the operation member 11 can be moved forward and backward along the sliding guide recess 10-2 of the support member 10. The pressing bodies 17 mounted on both sides of the operating member 11 are positioned at the installation position of the mechanism.

Meanwhile, the valve stem seal exchanger of the present invention allows simultaneous operation of four valve mechanisms (for example, two intake and exhaust valve mechanisms) of one cylinder. The cam sprocket 21 is manually rotated in the order so that the pistons of the first and fourth cylinders or the second and third cylinders are positioned at the top dead center, and then the operating member 11 is positioned at the position to work preferentially.

Therefore, the piston is located in the top of the valve mechanism of the cylinder located in the top dead center and the spring spring pressing piece (17-2) of the both side pressing body 17, the lower end of the valve spring seat ( 18) it is pulled down until it is in contact with the surface, and then, for example, the seating recess 1-7-4 formed in each of the bodies 17-3 of the left and right pressing bodies 17 of the pressing medium 15 Both binding parts 15-2 are horizontally bound and at the same time, the pressing medium 15 is horizontally maintained at an upper distance from the upper surface of the support 13 and pressurized by the operating lever 16. If the operator grasps the handle 16-1 of the operating lever 16 and gently pushes it down while the cam l4-1 is placed on the contact surface of the pressing medium 15, the action force at this time is the pressure cam 14-. 1) is transmitted to the pressing medium 15 through which the pressing medium 15 follows the supporting rod 14. As the downward movement causes a downward movement of this pressing member 177 presses the pressing member 17 on the both sides.

Here, the pressing force applied to the handle 16-1 of the operating lever 16 by the operator acts uniformly on the pressing bodies 17 on both sides through the pressing medium 15 which is moved while being guided by the supporting rod 14. Therefore, the simultaneous work on the left and right valve mechanism can be made without difficulty.

Therefore, the valve spring seat 18 and the valve spring 20 are pressed by the downward movement of the pressing body 11 as described above (the valve 4 at this time is the valve spring seat 18 and the valve spring 20 and It is pressed together to some extent and is supported by the upper surface of the piston directly underneath.) Automatic removal of the valve spring lock pin 19, which binds the valve spring seat 18 and the valve stem 4-1, is performed. The lower end of the) is bound to the piston of the bottom, and the valve spring lock pin 19 removed in this way is pulled out through the cutout 17-1 of the spring seat pressing piece 17-2. At the same time, the action force applied to the actuating lever 16 is released, and the entire actuating member 11 is moved slightly at that position. Then, the valve spring seat 18 and the valve spring 20 are removed in sequence and worn. After replacing the valve stem seal (2) with a new one, insert the valve spring (20) and the valve spring seat (113) again, and return the operating member (11) to its original position. do.

This process can be done in the order of the valve mechanism of the first cylinder → the valve mechanism of the fourth cylinder → the valve mechanism of the second cylinder → the valve mechanism of the third cylinder, and the piston must be the valve stem seal from the valve mechanism of the two cylinders at the top dead center position. (2) After completing the replacement work, complete the replacement of the valve stem seal (2) for the valve mechanism of the remaining cylinders.

By replacing the valve stem seal using the valve stem seal exchange device of the present invention as described above, the advantage that can reduce the work time that was previously spent 8 hours to 10 hours or more within 1 hour, and the work is relatively It is simple and has the advantage of boosting the fatigue of the memory, and this has the advantage of bringing maximization of the coastal work efficiency.

Claims (3)

It consists of a support member 10 fixed to the upper surface of the cylinder head (8), an operating member (11) slidingly coupled to the support member (10), and a damper (22) for mounting the cam sprocket (21). The support member 10 has a rectangular plate-like structure having a plurality of fastening holes 10-1 at the top and sliding guide recesses 0-2 at both sides thereof, and the operating member 11 is located at the bottom thereof. A sliding body 12 having a sliding guide connection portion 12-1, and a pressing body coupling portion 13-1 at both ends thereof, and at the same time, a support rod coupling hole 13-2 and a fastening hole 13-1 at the center and both sides thereof. 3) a support 13 having a support rod 14, a support rod 14 having a rotary pressure cam 14-1 and a locking piece 14-2 at the upper and lower ends thereof, and a binding hole 15-1 at the center thereof. Two spring seat pressing pieces having a pressing medium 15 having a fastening portion 15-2 at both ends, an operating lever 16 with a handle 16-1, and a cutout 17-1. It consists of the pressing body 17 which consists of (17-2), The sliding body 12 is coupled to the bottom of the indicator 13 by using the upper surface thereof, and the pressing body 17 is inserted into and mounted on both pressing body coupling parts 13-1, and the supporting rod 14 is mounted on the upper side of the indicator body 13. The pressing member 15 is fitted to the support rod 14 and is mounted side by side with the support 13 at the same time. The support rod 14 is configured to be attached to the pressurizing cam 14-1 of the upper end, the operating member 11 is coupled to the upper surface of the support member 10 through the sliding body 12 and at the same time slide thereon Automotive valve stem seal exchange, characterized in that made to be. According to claim 1, wherein each of the pressing body engaging portion (13-l) formed in mutually symmetrical on both ends of the support 13 is the same as the installation angle of the valve mechanism installed on the cylinder head (8) An automotive valve stem seal exchanger having an angle and formed to be inclined in half. The cam sprocket (21) according to claim 1, wherein the adapter (22) has a single-sided shape having a dual pin (22-1) at one end surface and is mounted on a cam shaft mounting portion (24) on a cylinder head (8). Automotive valve stem seal exchange, characterized in that to be rotated integrally with the).