JPH0732241U - Lining gauge - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a lining gauge used for adjusting the outer diameter of a lining when a brake shoe of a drum brake of an automobile or the like is assembled. [Structure] The guide rod and the guide rod are at right angles to both sides,
An outer diameter measuring arm that measures the outer diameter of the lining on its inner side, and an inner diameter measuring arm that measures the inner diameter of the brake drum with its outer protrusion are attached to one end of the guide rod, and on the guide rod. An outer diameter measurement arm that is slidably held by a tubular body and that measures the outer diameter of the lining on its inner side, approximately at right angles to both sides of the guide rod, and an inner diameter measurement arm that measures the inner diameter of the brake drum with its outer protrusion Are formed on the inner peripheral surface of the tubular body, the slide portion provided on the tubular body, the set screw provided on the tubular body, the retaining stopper provided on the other end of the guide rod, respectively. And a spring plate provided in the storage part.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lining gauge for use in adjusting the outer diameter of a lining when assembling a brake shoe of a drum brake of an automobile or the like.

[0002]

[Prior art]

 The alignment (tuning) between the left and right wheels of the clearance (gap) value formed by the outer diameter of the brake shoe lining of the drum type brake and the inner diameter of the brake drum is adopted by an automatic adjustment mechanism using a parking brake lever. Has been done. This is to make the different clearance values between the left and right wheels converge to almost the same value by pulling the parking brake lever several times when installing the brake shoes. If there is a large difference in the clearance value of, the adjustment work after that requires unnecessary labor.

Therefore, in order to reduce such unnecessary work, in the conventional work of assembling the brake shoes, a work in which the difference in the clearance value between the left and right wheels is made as small as possible is required.

Conventionally, when adjusting the outer diameter of the lining when assembling the brake shoe of the drum type brake, generally, the outer diameter of the lining with respect to the inner diameter of the brake drum is adjusted by visually confirming the dimensions. The lining was installed inside the brake drum.

Further, instead of visual confirmation, various gauges are used to measure each dimension, and the dimension is adjusted while comparing the numerical value of the inner diameter of the brake drum with the numerical value of the outer diameter of the lining. I had installed a lining inside the brake drum.

[0006]

[Problems to be solved by the device]

 However, when trying to visually check the adjustment of the lining of the conventional drum type brake described above, it took many years of experience to be able to quickly install the lining in the brake drum, which was extremely inefficient.

Also, in the work of measuring the respective dimensions using various gauges and adjusting the dimensions while comparing the numerical value of the inner diameter of the brake drum with the numerical value of the outer diameter of the lining, It was very difficult to install the lining quickly.

The lining gauge of the present invention is intended to solve the above-mentioned drawbacks of the conventional example, has a simple structure, and it is easy to confirm the outer diameter of the lining with respect to the inner diameter of the brake drum. It aims to provide a lining gauge that can be quickly installed.

[0009]

[Means for Solving the Problems]

 The lining gauge of this invention is a guide rod, an outer diameter measuring arm that measures the outer diameter of the lining at its inner side, approximately at right angles to both sides of the guide rod, and an inner diameter measurement arm that measures the inner diameter of the brake drum with its outer protrusion. The arm and the fixed part attached to one end of the guide rod, respectively, are slidably held by the tubular body on the guide rod, and the outer diameter of the lining is measured almost at right angles to both sides of the guide rod and at the inner side of the guide rod. An outer diameter measuring arm and an inner diameter measuring arm for measuring the inner diameter of the brake drum with its outer protrusion are respectively provided on the above-mentioned tubular body, a slide portion, a set screw provided on the tubular body, and the above-mentioned guide. The present invention is characterized by having a stopper for preventing removal provided at the other end of the rod and a spring plate provided in a storage portion formed on the inner peripheral surface of the cylindrical body.

[0010]

[Action]

 According to the lining gauge of the present invention, the structure is simple, the work of checking the outer diameter of the lining with respect to the inner diameter of the brake drum is easy, and the lining can be quickly installed in the brake drum.

Further, according to the lining gauge of the present invention, due to the function of the spring plate provided in the accommodating portion formed on the inner peripheral surface of the cylindrical body, the measurement accuracy is deteriorated due to wear or the like even if it is used for a long time. Without this, accurate measurement is possible over a long period of time.

[0012]

【Example】

 An embodiment of the lining gauge of the present invention will be described below with reference to the drawings.

1 to 3 illustrate one embodiment of a lining gauge of the present invention. In the figure, reference numeral 1 denotes a metal guide rod, which is formed longer than the inner diameter of the brake drum and the outer diameter of the lining. A metal fixing portion 2 is screwed to one end of the guide rod 1.

The fixing portion 2 is formed on the both sides of the guide rod 1 at substantially right angles and on both sides thereof, and an outer diameter measuring arm 3 for measuring the outer diameter of the lining with an inner side 4 thereof, and an outer protrusion 6 of the outer diameter measuring arm 3 of the brake drum. It is composed of an inner diameter measuring arm 5 for measuring the inner diameter. Outer diameter measurement The inner side 4 of the arm 3 is smooth, and the outer projection 6 of the inner diameter measurement arm 5 projects outwards beyond the width of the flange to measure the inner diameter while avoiding the flange of the brake drum. I am allowed. The tip of the outer protrusion 6 is formed to have a narrow width in order to accurately measure the inner diameter of the brake drum.

A metal slide portion 7 is slidably fitted on the guide rod 1. The slide portion 7 is slidably held on the guide rod 1 by a tubular body 8 provided at the substantially center. On both sides of the cylindrical body 8, an outer diameter measuring arm 11 for measuring the outer diameter of the lining with its inner side 12 and an inner diameter for measuring the inner diameter of the brake drum with its outer protrusions 14 are formed substantially at right angles to the guide rod 1. The measuring arm 13 is integrally provided.

As shown in FIGS. 4 and 5, the tubular body 8 is composed of a U-shaped portion 21 into which the guide rod 1 is fitted, and a lid plate 22 screwed to cover the opening of the U-shaped portion 21. Has been done. A concave portion 23 is provided on the back surface of the cover plate 22, and a leaf spring 24 made of an elastic copper plate is fitted in the concave portion 23, so that the tubular body 8 is provided with a predetermined surface on one side of the guide rod 1. It is configured to slide while applying elasticity. Therefore, the slide portion 7 always moves accurately on the tubular body 8 regardless of wear of the guide rod 1 and the like.

Reference numeral 25 denotes a set screw provided on the tubular body 8 for screwing in when the inner diameter of the brake drum is measured by the outer protrusion 6 to stop the movement of the slide portion 7.

A stopper 26 is formed at the other end of the guide rod 1 to prevent the slide portion 7 from falling off the guide rod 1.

In the measurement, the slide portion 7 is brought close to the fixed portion 2 and the inner diameter measuring arms 5 and 13 are inserted into the brake drum, and then the slide portion 7 is separated from the fixed portion 2 so that the maximum diameter portion of the inner diameter of the brake drum is reached. Then, the outer protrusions 6, 14 on the inner diameter measuring arms 5, 13 are brought into contact with each other and positioned by the set screw 25.

In this state, a lining may be fitted inside the outer diameter measuring arms 3 and 11, and the outer diameter may be measured at the inner sides 4 and 12.

The width between the outer protrusions 6 and 14 is formed to be slightly wider than the width of the inner sides 4 and 12, so that the measured lining can be fitted into the brake drum.

As the metal constituting each member of the lining gauge, various materials such as chrome-plated iron, stainless steel, and aluminum should be appropriately used according to the place of use, measurement target, cost, etc. You can

[0023]

[Effect of device]

 According to the lining gauge of the present invention, the structure is simple, the work of checking the outer diameter of the lining with respect to the inner diameter of the brake drum is easy, and the lining can be quickly installed in the brake drum.

Further, according to the lining gauge of the present invention, due to the function of the spring plate provided in the accommodating portion formed on the inner peripheral surface of the cylindrical body, the measurement accuracy is deteriorated due to wear or the like even when used for a long time. Without this, accurate measurement is possible over a long period of time.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a lining gauge according to the present invention.

2A and 2B are side views seen from opposite sides.

3A and 3B are a front view and a rear view, respectively, viewed from opposite sides.

FIG. 4 is a central cross-sectional view of FIG.

5 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 Guide rod 2 Fixed part 3,11 Outer diameter measuring arm 4,12 Inner side 5,13 Inner diameter measuring arm 6,14 Outer protrusion 7 Slide part 8 Cylindrical body 21 U-shaped part 22 Lid plate 23 Recessed part 24 Leaf spring 25 Stop Screw 26 stopper for retaining

Claims (1)

[Scope of utility model registration request] 1. A guide rod, an outer diameter measuring arm for measuring the outer diameter of the lining at its inner side, and an inner diameter measuring arm for measuring the inner diameter of the brake drum by its outer protrusion, at substantially right angles to both sides of the guide rod. , A fixed part attached to one end of the guide rod, and a tubular body slidably held on the guide rod.The outer diameter of the lining is measured almost at right angles to both sides of the guide rod and the inner side of the guide rod. Measuring arm,
An inner diameter measuring arm for measuring the inner diameter of the brake drum with its outer protrusion, a slide portion provided on the tubular body, a set screw provided on the tubular body, and a retaining lock provided on the other end of the guide rod. A lining gauge having a stopper for use and a spring plate provided in a housing formed on the inner peripheral surface of the cylindrical body.