TWM572977U - Chain measuring tool - Google Patents

Abstract

A chain measuring tool for measuring a degree of wear of a chain, the chain comprising a plurality of meshing holes spaced apart along a first direction, the chain measuring tool comprising a fixing seat, a moving seat, and an elastic member The fixing base includes a first body portion, and a first measuring position portion protruding outwardly from the first body portion, the moving base includes a second body portion movably disposed on the fixing base, a second measuring portion protruding outward from the second body portion, and at least one determining portion indicated on the second body portion, the elastic member is mounted between the fixing seat and the moving seat, and is constant The movable seat is pushed away from the fixed seat, and the equal measuring position portions are respectively inserted into the corresponding engaging holes, and the degree of wear is judged by the determination area in the relative displacement of the moving seat and the fixed seat.

Description

Chain measuring tool

The present invention relates to a measuring tool, and more particularly to a chain measuring tool for measuring the length of a chain.

The main function of the chain is to mechanically drive. Generally, there are bicycle chains. However, as the chain is used for a period of time, the chain will gradually wear out due to the frictional relationship, and gradually the opposite of the outer chain and the inner chain. The displacement becomes larger, which makes the length of the chain longer, which in turn affects the efficiency of the transmission, and even the entire chain is separated from the transmission.

Referring to FIG. 1, a prior art chain measuring tool 1 is used for measuring the degree of wear of a chain 100. The chain 100 includes a plurality of spaced-apart engaging holes 101. The chain measuring tool 1 includes a first measuring position. The portion 11 and a second amount of the measuring portion 12 spaced apart from the first amount measuring portion 11 by a fixed distance. The fixed distance is typically approximately equal to the maximum spacing allowed by the two-phase spaced engagement holes 101 of the chain 100. During the measurement, the first measuring position portion 11 is inserted into one of the engaging holes 101, and then the second measuring portion 12 is biased toward the other engaging hole 101, and if the second measuring portion is The insertion of one of the other engaging holes 101 indicates that the length of the chain 100 exceeds the maximum allowable range and needs to be replaced. However, the existing chain measuring tool 1 can only judge whether it is qualified or not, and cannot estimate the remaining service life of the tested chain 100, and can only measure the single-sized chain 100. If there are other sizes of the chain 100, an additional need is required. It is still inconvenient to use the corresponding measuring tool.

It is an object of the present invention to provide a chain measuring tool that overcomes at least one of the disadvantages of the prior art.

Therefore, the novel chain measuring tool is used for measuring the degree of wear of a chain, the chain comprising a plurality of meshing holes spaced apart along a first direction, the chain measuring tool comprising a fixing seat, a moving seat, and An elastic member. The fixing base includes a first body portion and a first amount of measuring position protruding outward from the first body portion, and the first measuring portion can be inserted into one of the engaging holes of the chain. The moving base includes a second body portion movably disposed on the fixing base, a second amount of measuring position protruding outward from the second body portion, and at least one mark on the second body portion In the determination zone, the second measurement position portion can be inserted into another engagement hole of the chain, and the determination zone can be used to determine the degree of chain wear when the movable seat and the fixed seat are relatively displaced. The elastic member is mounted between the fixing seat and the moving seat, and the elastic member constantly pushes the moving seat away from the fixing seat.

Therefore, the novel chain measuring tool is used for measuring the degree of wear of a chain, the chain comprising a plurality of meshing holes spaced apart along a first direction, the chain measuring tool comprising a fixing seat, a moving seat, and An elastic member. The fixing base includes a first body portion and a first amount of measuring position protruding outward from the first body portion, and the first measuring portion can be inserted into one of the engaging holes of the chain. The moving base includes a second body portion movably disposed on the fixing seat, a second amount of measuring position protruding outward from the second body portion, and a set of surfaces indicated on the surface of the second body portion Ruler table. The second measuring position portion can be inserted into another engaging hole of the chain, and the ruler table can display the relative distances of the measuring holes when the moving seat and the fixed seat are relatively displaced. The elastic member is mounted between the fixing seat and the moving seat, and the elastic member constantly pushes the moving seat away from the fixing seat.

The utility model has the advantages that the first measuring position portion and the second measuring position portion can be respectively inserted into the engaging holes, and the user can determine the chain on the determining area or the rule gauge table. Whether it is excessively worn, and can further estimate the degree of wear, so that users can more clearly understand the use of the chain and estimate the remaining service life.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 2, 3 and 6, a first embodiment of the novel chain measuring tool for measuring the degree of wear of a chain 9, the chain 9 comprising a plurality of spaced apart intervals along a first direction X. The engagement hole 91, the chain measuring tool comprises a fixing base 2, a moving base 3, and an elastic member 4.

The fixing base 2 includes a first body portion 21 and a first measuring position portion 22 projecting outward from the first body portion 21. The first body portion 21 has a substrate 211, an extension plate 212 extending from the substrate 211 toward the first direction X, and a cover plate 213 detachably mounted on the extension plate 212. The extension plate 212 A recess 23 is defined together with the cover plate 213. The recess 23 is provided with two limiting slot regions 231. The first body portion 21 further has two limiting end faces 214 respectively defining one end edge of the limiting slot regions 231. The first body portion 21 is further provided with a first positioning hole 24 recessed in the substrate 211.

The moving base 3 includes a second body portion 31 movably disposed in the recess 23 of the fixing base 2, a second measuring position portion 32 protruding outward from the second body portion 31, and two A limiting block 311 protruding outward from the second body portion 31, a determining portion 33 indicated on the second body portion 31, and a second positioning hole 34 recessed in the second body portion 31. The determination zone 33 can be used to determine the degree of wear of the chain 9 when the movable seat 3 and the fixed seat 2 are relatively displaced, and the surface of the determination zone 33 can be a conspicuous color, which makes it easier for the user to make the discrimination.

4, 5, the elastic member 4 is mounted between the fixing base 2 and the moving base 3, and the first positioning hole 24 is for positioning one end of the elastic member 4. The second positioning hole 34 is available. The other end of the elastic member 4 is positioned. When the elastic member 4 is pushed away from the fixed seat 2, and the movable seat 3 is pushed away from the fixed seat 2 by the elastic member 4, the limiting blocks 311 are respectively along the limiting slot. After moving in the first direction X, the 231 abuts against the limiting end faces 214 to prevent the moving seat 3 from coming off the fixing base 2.

Referring to FIGS. 6 and 7, in use, the first measuring position portion 22 of the fixing base 2 is inserted into one of the engaging holes 91 of the chain 9, and the moving seat 3 is urged to move close to the fixing base 2, The second amount measuring position portion 32 is inserted into the corresponding one of the other engaging holes 91. The elastic member 4 is squeezed to accumulate a restoring force, and then the biasing force is removed, and the restoring force moves the fixing base 2 and the moving base 3 away from each other in opposite directions until the first measuring position portion 22 and the The second amount measuring position portions 32 are respectively stopped by the outermost edges of the engaging holes 91. At this time, the degree of wear of the chain 9 to be measured can be determined by the relative position of the determination zone 33 and the fixed seat 2. If the determination zone 33 is completely or partially covered by the fixing seat 2, it indicates that the relative distance of the meshing holes 91 to be tested is normal, so the degree of wear of the chain 9 is still in an acceptable range; if the determination zone 33 Fully exposed outside the holder 2, the relative distance of the engagement holes 91 to be tested is too large, so that the chain 9 has been excessively worn. In addition to the above method, the user can determine whether the chain 9 is excessively worn. Before the chain 9 is excessively worn, the user can expose the remaining seat 2 by the determination zone 33, and estimate the remaining service life of the chain 9.

It should be particularly noted that, due to the wide variety of the chains 9, the relative distances of the engaging holes 91 of each of the chains 9 are also different, and the determination area 33 provided in the moving base 3 is not limited to one. Referring to FIG. 8, the present invention The second embodiment of the chain measuring tool differs from the first embodiment in that the moving base 3 includes two determination zones 33 for determining the degree of wear of the two differently sized chains 9, respectively. The moving base 3 can also be designed as a plurality of determining zones 33 for determining the degree of wear of the chains 9 of different sizes.

Referring to FIG. 9, a third embodiment of the novel chain measuring tool differs from the first embodiment in that the determining area 33 of the moving base 3 is changed to a set of feet indicated on the surface of the second body portion 31. The gauge 35 can display the relative distances of the meshing holes 91 to be measured when the movable seat 3 is displaced relative to the fixed base 2 by the ruler table 35. The obtained measurement data can be further matched with the look-up table to judge the degree of wear of the chain 9.

In summary, the function of the novel chain measuring tool is that the measuring portions 22 and 32 are respectively inserted into the engaging holes 91, and the chain is discriminated by the determining portion 33 or the ruler table 35. The degree of wear of 9 can also be set by simultaneously setting a plurality of determination zones 33, and the user can determine the wear degree of the chain 9 of a plurality of sizes by preparing only one new chain measuring tool, and thus, the purpose of the novel can be achieved. .

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

2‧‧‧ Fixed seat

21‧‧‧First Body Department

211‧‧‧Substrate

212‧‧‧ Extension board

213‧‧‧ Cover

214‧‧‧ Limit end face

22‧‧‧First measurement unit

23‧‧‧ Groove

231‧‧‧Limited trough area

24‧‧‧First positioning hole

3‧‧‧Mobile seat

31‧‧‧Second body

311‧‧‧Limited blocks

32‧‧‧Second measurement unit

33‧‧‧Decision area

34‧‧‧Second positioning hole

35‧‧‧ ruler

4‧‧‧Flexible parts

9‧‧‧Chain

91‧‧‧Meshing holes

X‧‧‧ first direction

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a schematic diagram illustrating the use of the existing chain measuring tool to measure the use of a chain; 3 is a perspective view of the first embodiment of the chain measuring tool; FIG. 3 is an exploded perspective view of the first embodiment; FIG. 4 is a cross-sectional bottom view showing the state of the first embodiment under unstressed FIG. 5 is a view similar to FIG. 4, illustrating a state in which a moving seat of the first embodiment is urged to be pushed close to a fixed seat; FIG. 6 is a schematic view showing the first embodiment for measuring one Figure 7 is a schematic view showing the first embodiment for measuring a normal chain; Figure 8 is a perspective view of a second embodiment of the novel chain measuring tool; and Figure 9 is a new type of the present invention; A perspective view of a third embodiment of a chain measuring tool.

Claims (9)

A chain measuring tool for measuring the degree of wear of a chain, the chain comprising a plurality of meshing holes spaced apart along a first direction, the chain measuring tool comprising: a fixing base comprising a first body portion, And a first amount of the measuring portion protruding from the first body portion, the first measuring portion can be inserted into one of the engaging holes of the chain; a moving seat comprising a movable portion disposed thereon a second body portion on the fixing seat, a second amount of measuring position protruding outward from the second body portion, and at least one determining area indicated on the second body portion, the second measuring position portion For inserting into another engaging hole of the chain, the determining area can be used to determine the degree of chain wear when the moving seat and the fixed seat are relatively displaced; and an elastic member is installed between the fixed seat and the moving seat, The elastic member constantly pushes the moving seat away from the fixed seat. The chain measuring tool of claim 1, wherein the first body portion has a substrate, an extension plate extending from the substrate toward the first direction, and a detachably mounted on the extension plate. a cover plate, the extension plate and the cover plate define a recess, and the movable seat is movably disposed in the recess. The chain measuring tool of claim 2, wherein the groove is provided with at least one limiting groove region, the first body portion having at least one limiting end surface defining an end edge of the limiting groove region, the moving seat The device further includes at least one limiting block protruding outward from the second body portion and located in the limiting slot region. When the moving seat is pushed away from the fixing seat by the elastic member, the limiting block abuts the limit End face. The chain measuring tool of claim 3, wherein the first body portion is further provided with a first positioning hole recessed in the substrate, and the moving seat is provided with a second positioning hole recessed in the second body portion. The first positioning hole is for positioning one end of the elastic member, and the second positioning hole is for positioning the other end of the elastic member. The chain measuring tool according to any one of claims 1 to 4, wherein the moving base comprises a plurality of determination zones indicated on the second body portion, and the degree of wear of the plurality of differently sized chains can be determined separately. A chain measuring tool for measuring the degree of wear of a chain, the chain comprising a plurality of meshing holes spaced apart along a first direction, the chain measuring tool comprising: a fixing base comprising a first body portion, And a first amount of the measuring portion protruding from the first body portion, the first measuring portion can be inserted into one of the engaging holes of the chain; a moving seat comprising a movable portion disposed thereon a second body portion on the fixing seat, a second measuring position portion protruding outward from the second body portion, and a set of ruler tables indicated on the surface of the second body portion, the second measuring portion The utility model can be inserted into another engaging hole of the chain, the scale gauge can display the relative distance of the meshing holes to be tested when the moving seat is displaced relative to the fixing seat; and an elastic member is mounted on the fixing seat The elastic member constantly pushes the moving seat away from the fixed seat. The chain measuring tool of claim 6, wherein the first body portion has a substrate, an extension plate extending from the substrate toward the first direction, and a detachably mounted on the extension plate. a cover plate, the extension plate and the cover plate define a recess, and the movable seat is movably disposed in the recess. The chain measuring tool according to claim 7, wherein the groove is provided with at least one limiting groove portion, and the first body portion has at least one limiting end surface defining an end edge of the limiting groove portion, the moving seat The device further includes at least one limiting block protruding outward from the second body portion and located in the limiting slot region. When the moving seat is pushed away from the fixing seat by the elastic member, the limiting block abuts the limit End face. The chain measuring tool of claim 8, wherein the first body portion is further provided with a first positioning hole recessed in the substrate, and the moving seat is provided with a second positioning hole recessed in the second body portion, The first positioning hole is for positioning one end of the elastic member, and the second positioning hole is for positioning the other end of the elastic member.