KR860000631Y1 - Oil filter type wrench - Google Patents

Abstract

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Description

Wrench for oil filter

1 is an overall perspective view of the present invention.

2 is a partial cutaway cross-sectional view of the present invention.

3 is a cross-sectional view taken along line A-A of the present invention.

Figure 4 is a perspective view of the present invention coupled to the oil filter to rotate the oil filter.

* Explanation of symbols for main parts of the drawings

12: band 24: moving plate

16: fixed plate body 18: screw rod

20: oil filter 22: flat part

24: flat end 26: outwardly extending end

32: middle part 34: upper part

38: through hole 39: through hole

40: fixed piece 44: fixed space part

48: nut 54: extension head

56: washer

The present invention relates to a tool for use in automobile maintenance, in particular an oil filter wrench that can be rotated by being fixed to an oil filter so that the oil filter can be tightened or fixed by loosening or releasing the oil filter.

For example, the location and size of an oil filter mounted on a narrow space engine is almost impossible to loosen or tighten the filter using a standard wrench or clamp. Due to this problem, various tools have been developed to easily fix or detach the oil filter from the filter holder of the engine.

One such tool is a lever wrench with a flexible band mounted to a lever handle in which the lever is pulled around the oil filter as it is pulled in an arc around some of these oil filters. It is intended to be tightened. Theoretically, by rotating the handle in an arc direction, the band can be fixedly frictionally coupled to the outer surface of the oil filter. If a special force is applied to move the handle further in an arc relative to the oil filter, this force will be transmitted through the wrench to apply a torque to the filter to rotate the filter. However, these lever wrenches have some drawbacks. That is, the frictional coupling between the smooth flexible band and the lower part of the oil filter is not expected to always hold the filter in the wrench and prevent it from slipping when a larger torque is applied. In addition, due to the combined tightening and pivoting of the handles, these wrenches should only be handled in certain directions, so if they are incorrectly installed at the time of installation, these wrenches are separated and then repositioned to tighten or loosen the filter as required. Should be selected. Furthermore, most of these wrenches can only be used for relatively small oil filters because of the lever lever of the handles, but the oil in the engine compartment is less than the space required for the lever handle to be pulled down to make it easier to fasten the band to the filter. It is not possible to use these wrenches to secure the filter. Another tool for securing or detaching the oil filter to the filter holder of the engine is an expandable socket that is fitted on the end of the oil filter to engage a typical series of planes arranged around and extending around the outward extension of the filter. There is one configured. A ratchet wrench is connected to rotate the oil filter as required by this expanded socket. As with lever type wrenches, wrenches with such an expandable socket have a number of drawbacks that limit their use and have a large space. For example, the available oil filters come in a variety of shapes and therefore must be equipped with several extension sockets for different size oil filters. In addition, the wrench having an extension socket can be used only when a plurality of planar portions are formed adjacent to the outward extension end of the oil filter to hold the oil filter.

If these flat portions are not formed or these flat portions are damaged, a wrench with an expandable socket cannot hold the oil filter as required. Therefore, it is possible to adjust the oil filter of various different sizes, and it is possible to hold the oil filter fixedly without slipping, while the unique oil filter wrench that requires the torque applied by the wrench to the filter is required. . Furthermore, these oil filter wrenches must be robust and can be used efficiently in most confined spaces in the engine compartment and be able to rotate the filter clockwise or counterclockwise regardless of the position of the wrench relative to the filter.

Finally, these oil filter wrenches must be easy to manufacture, economical and able to tighten or loosen the oil filter in any position, even by professional mechanics or unskilled workers.

The present invention satisfies this need and provides other related advantages.

An object of the present invention is to provide an improved wrench that can be adjusted to hold the oil filter in a fixed manner and that can apply a twisting force to rotate the filter. Such a wrench of the present invention consists of a rigid holding band having a pair of regularly spaced end plates positioned and supported by a screw rod. When the screw rod is rotated about its longitudinal axis, the distance between the two end plates becomes wider or narrower according to the rotational direction of this axis. When the wrench is placed around the oil filter, the end plate moves relatively to the other side along the threaded rod, reducing the gap between the band and the part of the shaft separating the end plate, thereby tightening the wrench on the filter. On the contrary, when the end plate is moved away from the other side along the axis, the gap between the band and the portion of the shaft separating the end plate is widened so that the wrench can be loosened and released from the filter. More detailed description is as follows.

The moving plate body 14 and the fixed plate body 16 are formed at a predetermined interval in the band 12 to drill through holes 38 and 39 in parallel thereto, and a nut (outside the hole 38 of the moving plate body 14). 48) to form the extended head 54, and the head of the through hole 38 of the movable plate body is caught by the through hole 39, which is drilled through the fixing plate body 16 with the screw rod 18 into which the washer 56 is inserted. The fixing piece 40 formed by screwing to the nut 48 mounted on the outside and extending the fixing plate body 16 is welded to the band 12 so that the fixing space 44 is formed, and the oil filter is attached to the band 12. It is smooth in the upper part which formed the lower part which formed the several planar part 22 which contact | connects the planar end part 24 formed adjacent the outward extension end part 26 of the 20, and the intermediate part 32 in which the reinforcement jaw was formed. It is formed by the upper portion 34 forming the band portion.

Reference numeral 10 is a wrench, 28 is a smooth cylinder of the oil filter, 36 is a fixed point, 42 is a starting point, 50 is a fixed screw.

Referring to the effects of the present invention as described above is as follows.

The wrench of the present invention consists of a rigid band 12 having a pair of spaced end plates 14, 16 positioned at and supported by the threaded rod 18. When the screw rod 18 is rotated about its longitudinal axis, the distance between the end plates 14 and 16 is increased or decreased depending on the rotational direction of the shaft. The relative movement of the end plates 14 and 16 towards the mating side along the threaded rod 18 when the wrench 10 is placed around the oil filter 20 is the part of the shaft separating the band 12 and the end plates. The gap between them is reduced so that the wrench is tightened against the filter. On the contrary, the relative movement of the end plates 14 and 16 away from the mating side along the threaded rod 18 increases the spacing between the band 12 and the portion of the shaft separating the end plates, so that the wrench (with respect to the oil filter 20) is increased. 10) to loosen.

In the embodied embodiment of the present invention, the movable plate body 14 moves along the threaded rod 18 toward or away from the stationary plate body 16 in accordance with the rotation of the threaded rod 18. The band 12 between the pair of end plates 14 and 16 has a plurality of planar portions 22 which are in contact with the planar portion 24 formed adjacent to the outwardly extending end portion 26 of the oil filter 20. Is formed. The flat portion 22 formed in the band 12 allows the wrench 10 to hold the oil filter 20 stronger and more securely, and is not slipped when a twisting force is applied through the wrench to rotate the filter. Do not. Moreover, the screw rod 18 is equipped with the handle 28 which can rotate this screw rod 18 by hand at the free end, and can rotate the filter 20 as needed.

The wrench 10 of the present invention has a wide range of movement of the end plates 14 and 16 with respect to the mating side of the screw rod 18, so that oil of various sizes and shapes without slipping is applied while a torque is applied to the filter through the wrench. Since the filter 20 can be fixed to hold it fixedly, it is remarkably improved over a conventional wrench. Further, by simply rotating the screw rod 18 about its longitudinal axis, the band 12 can be tightened or loosened, increasing the utility of the wrench 10 of the present invention in a narrow space.

In this way, it is not necessary to move the handle 28 in the straight direction or the large arc direction to tighten the band. Furthermore, after the oil filter 20 is selected in any position, it can be used to rotate the filter in either direction to tighten or loosen the filter, regardless of the position of the wrench relative to the filter.

As shown in FIGS. 1 to 4, the rigid band 12 forms a smooth band portion with the lower portion 30 having a plurality of continuous flat portions 22 and the middle portion 32 having a reinforcing jaw. The upper portion 34, 34 is composed of. The upper portion 34 of the band is similar in structure and purpose to the flexible smooth band found in many standard oil filter wrenches. In the present invention, the upper side 20 is adjacent to the smooth cylinder of the oil filter 36 so that the wrench 10 is placed at the correct position of the filter and frictionally coupled to the outer surface of the smooth cylinder 36. do. The reinforcing jaw of the intermediate part 32 reinforces the strength of the band 12 and also separates the upper part 34 from the lower part 30 so that the band 12 can be placed on a plane of different cross section if necessary. do.

The lower portion 30 of the band 12 in which a plurality of continuous plane portions 22 are formed gives the wrench 10 of the present invention a significant advantage over several conventional oil filters. Generally, the flat portion 22 is formed adjacent to the outward extending end 26 of the oil filter 20 such that the socket wrench requires the outward extending end of the oil filter 20 in the same manner as the socket wrench requires the nut. Combined with. Although the flat portion 10 formed on the wrench 10 is different in size from the flat portion 24 formed on the oil filter 20, the inner surface of the wrench is not curved but a continuous flat portion is formed, so that the flexible flat band is flat. It is to interact with the plane of the oil filter to hold the oil filter more fixedly in the wrench than configured. Furthermore, the wrench 10 of the present invention can be tightened sufficiently so as not to slip against the filter when a torque is applied, so that the oil filter 20 having no flat portion 24 also has a plurality of planes formed on the lower portion 30. It can be fixed by the unit 22.

The rigid band 12 of the present invention is not limited to the three portions 30, 32, 34 as described above. If necessary, for example, the band may be composed of only the lower portion 30 in which the continuous flat portion 22 is formed without the reinforcing jaw of the middle portion 32 or the smooth upper portion 34. In addition, the flat portion 22 may be formed of only a band similar to the upper portion 34 without the lower portion 30 formed. In addition, the band 12 includes a moving plate 14 and a fixed plate body 16 at regular intervals positioned and supported by the screw rod 18. As shown in FIGS. 1 to 2, the fixed plate body 16 has a planar fixed plate body 16 in which openings are drilled and the fixed piece 40 is integrally formed. The fixing plate body 16 is firmly extended to the band 12 at the fixing point 42, and the fixing piece 40 is curved outward from the end of the fixing arm to the fixing space portion 44 between the fixing arm and the fixing arm. ). On the other hand, it includes a nut 48 mounted on the movable plate body (14). The moving plate body 14 is connected to the band 12 at the moving point 50, and the nut 48 is attached in line with the through-hole 38 drilled in the moving plate body 14. The screw rod 18 penetrated through the through hole of the pair of end plate bodies 14 and 16 has a screw rod 18 having an extended head 54 formed at one end thereof and a fixing portion formed at an end of the screw rod opposite to the expansion head. It consists of. The threaded rod 18 is positioned at each end such that the fixed plate body 16 is positioned at a position adjacent to the extension head 54 and the movable plate body 14 moves along the threaded rod 18 in accordance with the rotation of the threaded rod 18. Combined with the plate body. The expansion hole formed through the fixing plate body so that the fixing plate body 16 is fixed adjacent to the expansion head 54 of the screw rod may have a size that the screw rod 18 can freely rotate. In addition, the extension head 54 is located in the fixed space portion 44 formed between the fixed piece 40 and the fixed plate body 16 so that the linear movement with respect to the fixed piece and the fixed plate body 16 is limited. The extension head 54 is separated from the fixed plate body 16 by the washer 56 to reduce wear and tear of the fixed plate body 16 and the extended head 54 when the screw rod 18 is rotated. . The other side of the screw rod 18 is screwed with the nut 48 so that the movable plate body 14 can be moved in the screw rod 18 as the screw rod 18 rotates by extending into the through hole of the movable plate body. . And the handle 28 is fixed to the fixing part of the screw rod 18 to rotate the screw rod by hand. In the illustrated embodiment, the handle 28 is fixed to the threaded rod 18 with a fixing screw 58 but may be fixed by other known methods. In addition, the handle 28 is a handle aid hole 60 is drilled so that a separate lever can be used to loosen or tighten the wrench 10 according to the user's convenience.

After the wrench 10 is fixed to the oil filter 20, the handle 28 is rotated in an arc direction with respect to the oil filter in order to rotate the oil filter clockwise or counterclockwise without adjusting the wrench any more with respect to the oil filter. Can be rotated. In contrast, the conventional oil filter wrench requires some adjustment before changing the direction. For example, when using a lever type oil filter wrench, the wrench must be completely removed from the oil filter 20 and repositioned to rotate the filter in the opposite direction.

The wrench 10 of the present invention includes a plurality of planar portions 22 as part of the rigid band 12 and is more than a conventional wrench due to the interaction between the rotating oil filter 20 and the points 42 and 50. The power to hold is excellent.

When the band 12 is placed in the correct position and tightened about the periphery of the oil filter 20, the connections 42 and 50 between the end plates 14 and 16 and the band are used to transfer the force to the oil filter. It acts optionally as a point with respect to the threaded rod 18. When the handle 28 is pulled in an circumferential direction around the filter 20 to rotate the filter, the threaded rod 18 presses one of the end plates 14 and 16 and thus the point connection 42 to the filter. At the same time as pressing the one of the) 50, the other end plate is pulled away from the filter.

The pressure applied to either of the point connections 42 or 50 can result in a higher coefficient of friction between the filter 20 and the wrench than can be obtained with a conventional oil filter wrench, thus holding the force of the wrench 10 To increase.

For example, as shown in FIG. 4, when the handle 10 is rotated clockwise to rotate the filter when the wrench 10 is coupled to the oil filter 20, the movable plate body 14 and the band 12 The point connecting portion 50 between) will be pulled away from the outer surface of the oil filter, the point connecting portion 42 between the stationary plate body 16 and the band is pressed against the oil filter. In most cases the coefficient of friction between the fixed point connection 42 and the oil filter 20 is higher than the coefficient of friction of the other contact points between the wrench and the filter 10. On the contrary, when the handle 28 is pulled in a direction to rotate the oil filter 20 counterclockwise, the moving point connecting portion 50 is pressed against the filter and the fixed point connecting portion 42 tends to be raised to fall with respect to the oil filter. There is this.

As such, the wrench 10 of the present invention can be advantageously used in various aspects. Since the end plate body 14 and 16 move relatively in the longitudinal axis direction of the screw rod 18 as the screw rod 18 rotates, the wrench 10 of the present invention fixedly holds oil filters of different sizes and shapes. Can be adjusted to hold. In addition, since the structure of the wrench 10 is simple, it can be mass-produced reliably and inexpensively because it is excellent in durability and safe. Finally, when tightening the wrench 10, only the end plate body 14, 16 of the band 12 is moved toward the other side, the force to be held by the band 12 and the point connection portion 42, 50 Given this, the wrench of the present invention can be advantageously used to exert a strong twisting force in a limited work space. Although specific embodiments of the present invention have been described for purposes of illustration, various modifications may be made without departing from the spirit or scope of the present invention. For example, various types of handles 28 can be mounted to the threaded rod 18. In addition, instead of the nut 48, a different type of screw connector may be installed on the moving plate 14. Furthermore, another structure may be provided in which the fixed plate body 16 may be moved on the screw rod 18 as the screw rod 18 rotates.

Claims (1)

The moving plate body 14 and the fixed plate body 16 are formed at a predetermined interval in the band 12 to drill through holes 38 and 39 in parallel thereto, and a nut (outside the hole 38 of the moving plate body 14). 48 to form the extension head 54 and the head of the movable plate body 38 to be caught by the through hole 39 of the screw rod 18 into which the washer 56 is inserted. 48 is welded to the band 12 so that the fixing space portion 44 is formed by the fixing piece 40 formed by screwing the nut 48 attached to the outside of the fixing member 48 and extending the fixing plate body 16. The upper portion formed with a lower portion formed with a plurality of planar portions 22 which are in contact with the planar end portion 24 formed adjacent to the outwardly extended end portion 26 of the oil filter 20 and the intermediate portion 32 formed with a reinforcing jaw. Wrench for oil filter formed by the upper part 34 which forms a smooth band part in the back.