JPS58171267A - Oil filter wrench - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oil filter wrench.

In recent years, as automobiles have become smaller, the structure inside the engine compartment has also become smaller, and many parts are being assembled in a small space.There is also a trend for oil filters to be installed deep inside, in narrow and hard-to-reach places. . Therefore, it is time to replace the oil filter installed in such places.

Conventionally known handle-type filter wrenches can no longer be used.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a completely new filter wrench that can be used to replace the filter wrench in a narrow, narrow place.

The structure and operation of the present invention will be explained with reference to the embodiments shown in the drawings.

+n +f+ are upper and lower flat plates having a substantially equilateral triangular shape, and these flat plates are installed at appropriate intervals above and below. This flat plate may be square or other rectangular shape. (2) is this upper and lower flat plate +
A drive shaft is provided at the center of 11 fl'l, and a drive gear (3) is formed on the circumferential surface between the flat plates of this drive shaft. (4)
is a knob provided at the upper end of the drive shaft (2) protruding above the upper deck (1), and the periphery of this knob is a rectangular shape such as a hexagon. (5) is a protrusion provided at the lower end of the drive shaft (2) protruding below the lower flat plate A), and (6)... is a protrusion provided at a part of each corner between the upper and lower flat plates ill'll'1. The working gears each mesh with the central driving gear (3). These three operating gears (6) are integrally formed with inverted arms (7) at right angles to the outside. (8)... is the vertical part of this arm (7) (
(2) This is a holding member provided on the holder, which is made of a rubber material with a corrugated surface and a large coefficient of friction. (9)...
is a pivot that pivots the center of the operating gear (6) and is installed between the upper and lower support plates n+ + i+, and the operating gear (6) rotates in the left-right direction about this pivot. (10) is a contractile bomb constructed by fixing one end to the upper end protrusion (5) of the drive shaft (2) and fixing the other end to the vertical part (71) of the one arm (7); When the arm (7) to which the other end is fixed opens to its maximum, this retractable bullet expands to the maximum in the same direction and maintains a tensioned state. Since it contracts due to the action, the arm (7) returns inward again in conjunction with this.(a) is the filter cover.

Therefore, when you want to replace the oil filter, first grasp the knob (4) protruding from the center of the upper plate (1) of the wrench of the present invention with your fingertips or a spanner, and then remove the arm (7).
) in the direction of opening. Then, the drive gear (31) of the drive shaft (2) that is integrated with this knob (4) rotates, and as a result, the three operating gears +61 F6) (01 rotates) that mesh with this drive gear (3) at the same time. The arms f71171 and f71 of each operating gear are opened.At this time, the retractable ammunition (10) also gradually extends, but this ammunition (10)
) The position of the arm (7) to which the other end is fixed is the flat plate n+
When the arms (7) reach the +1'+ triangular direction and are arranged in parallel, the arm (7) is at the farthest position from the drive shaft (2). In this state, the ammunition (10) either extends to the maximum extent and maintains equilibrium, or remains in a stopped state even if you release your fingertip or wrench from the knob (4) (see Figure 3). After placing the three arms (7) in the maximum expansion state on the side of the head of the filter cover (a), rotate the knob (4) to either side again.Then, the drive shaft (
The rotation of the drive gear (3) in 2) rotates the operating gear +61161 (61), so the three arms (7) also rotate at the same time and come together inward, leaving each arm alone. The clamping member (8) of the vertical part (7) comes into contact with the filter force around the head of the bar and clamps it (see Fig. 4). At this time, arm (71 (71 (
71 is constantly tightened inward by the tensile contraction of the contraction bomb (lO). Therefore, it is sufficient to remove the filter in such a state.

In this way, the present invention provides a drive gear (
3), an operating gear (6) that is integrated with an arm (7) that extends vertically outward is engaged, and a drive shaft is attached to the arm (7) that rotates freely to open and close due to this engagement. (2) A contraction bullet machine (10) is installed between the end and the contraction bullet machine, and the expansion and contraction of this contraction bullet machine causes the holding parts (8) of all the arms (7) to approach and separate from the filter cover. Unlike the conventionally known no-endle type filter wrench, no matter where and in what direction the oil filter is installed, it is possible to reach the head of the oil filter by hand. It is now possible to directly install the oil filter in the engine compartment, which is being miniaturized in response to the miniaturization of automobiles, allowing for quick and smooth replacement work of the oil filter. The effect of this revolutionary filter wrench is enormous.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, and FIG. 1 is an overall plan view;
FIG. 2 is a sectional view taken along line A--A, FIG. 3 is a perspective view with a partial V notch cut out, showing the state before installation, and FIG. 4 is a perspective view showing the state after installation. Patent applicant: 71 Inoue Seisakusho Co., Ltd. Figure 4

Claims (2)

[Claims] (1) An operating gear integrated with an arm extending vertically outward is meshed around the drive gear provided on the drive shaft, and a part of the arm that rotates freely to open and close due to this mesh is attached to the end of the drive shaft. An oil filter wrench characterized in that a retractable bullet is installed between the two, and the gripping portions of all the arms are brought into contact with and separated from the filter cover by the expansion and contraction of the retractable bullet. (2) A drive shaft is provided in the center of the upper and lower rectangular flat plates, and a drive gear is formed on the circumferential surface of the drive shaft between the flat plates,
A knob is provided at the upper end of the drive shaft of the upper flat plate, and a protrusion is provided at the lower end of the drive shaft of the lower flat plate, and an operating gear is pivoted between a part of the corner of the upper and lower flat plates and meshed with the drive gear. An inverted-shaped arm is provided extending outward from the operating gear, and a gripping member is provided on the vertical portion of the arm, one end of which is secured to the lower end protrusion of the drive shaft, and the other end of the contraction bullet is secured to the vertical portion of the arm. Oil filter wrench made of. (31 The upper and lower flat plates are approximately equilateral triangles, and three operating gears are pivoted between the corners of the upper and lower plates and mesh with the central driving gear, and three arms from these operating gears are attached to the outside. The oil filter wrench according to claim 2, which extends in the opposite direction.