JP2016080395A - Goniometer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a goniometer whose operability can be changed according to user's preference and use state.SOLUTION: A goniometer 1 comprises a first am part 10, a second arm part 20 provided so that it is rotatable relative to the first arm part 10, an adjustment means 40 that adjusts rotation resistance between the first arm part 10 and second arm part 20.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an angle meter used for measuring a range of motion of a joint, for example.

  Conventionally, for example, in an institution where rehabilitation is performed or a hospital such as orthopedics, an goniometer is used to quantitatively measure the range of motion of a human joint. For example, an angle meter is used for measuring the range of motion of the arm and measuring the range of motion of the finger.

  For example, as disclosed in Patent Document 1 and the like, a conventional angle meter includes two arm portions that are provided so as to be relatively rotatable around a shaft portion. One of the two arm portions is provided with an angle scale, and the angle between the two arm portions can be measured using the angle scale. The joint range of motion can be quantitatively measured by reading the angle formed by the two arm parts when each arm part is applied to each measurement part of the body.

JP 2013-76686 A

  By the way, if there are some people who use the angle meter to measure the range of motion of the joint (for example, a doctor) and prefer to use the two arm portions in a state in which the two arm portions are relatively rotatable, the two arms Some people prefer to use it in a state where the parts do not easily rotate relative to each other. In addition, there are those who think that it is more convenient for the same user (the user of a goniometer such as a doctor) to change the ease of rotation of the arm part depending on the use situation.

  In view of the above points, an object of the present invention is to provide an angle meter that can change operability according to a user's preference and usage situation.

  In order to achieve the above object, an angle meter according to the present invention includes a first arm portion, a second arm portion provided to be rotatable relative to the first arm portion, and the first arm portion. And an adjusting means for adjusting the rotational resistance between the second arm portion (first configuration).

  According to this configuration, by using the adjusting means that adjusts the rotational resistance between the first arm portion and the second arm portion, the relative relationship between the first arm portion and the second arm portion is obtained. It is possible to easily change the ease of rotation. For this reason, according to this structure, the operativity of an arm part can be easily changed with a user's liking and use condition.

  The goniometer of the first configuration further includes a shaft portion that supports the first arm portion and the second arm portion arranged to overlap the first arm portion so as to be relatively rotatable, The adjusting means is disposed on the opposite side to the side on which the second arm portion overlaps and is overlapped with the first arm portion, and is rotatably supported by the shaft portion. The rotation resistance may be adjusted (second configuration). According to this configuration, it is possible to avoid an unnecessarily large size of the angle meter by attaching the adjusting means around the shaft portion.

  In the angle meter of the second configuration, the first arm portion is formed with a groove portion whose depth changes, and the adjustment means has an engagement convex portion that engages with the groove portion (third The configuration may be According to this structure, since the depth of the groove part engaged with the engagement convex part changes, the force by which the engagement convex part presses the first arm part can be changed by the rotation of the adjusting means. it can. For this reason, according to this structure, the rotational resistance between the 1st arm part and the 2nd arm part can be changed easily.

  In the angle meter of the third configuration, the groove has a configuration in which a plurality of recesses whose depth changes stepwise is connected, and the engagement projection can be engaged with each of the plurality of recesses. It may be the configuration (fourth configuration) provided. According to this configuration, the rotational resistance between the first arm portion and the second arm portion can be switched stepwise, which is convenient. Moreover, according to this structure, the engagement convex part can be made into the state engage | inserted by the recessed part at the stage which adjustment of the rotational resistance between the 1st arm part and the 2nd arm part was completed. For this reason, it can be avoided that the adjusting means turns freely and the rotational resistance between the first arm portion and the second arm portion is not in an undesired state.

  The angle meter of the said 3rd or 4th structure WHEREIN: The said groove part and the said engagement convex part may each be the structure (5th structure) provided with two or more. According to this configuration, it is easy to avoid a situation in which an unbalanced force is applied between the first arm portion and the second arm portion by providing the adjusting means.

  In the angle meter having any one of the first to fifth configurations, an angle scale is provided on one of the first arm portion and the second arm portion, and the other is for angle reading. A configuration (sixth configuration) in which these lines are provided may be employed.

  According to the present invention, it is possible to provide an angle meter that can change the operability according to the user's preference and use situation.

The schematic plan view which shows the structure of the angle meter which concerns on embodiment of this invention. Schematic which shows the usage example of the angle meter which concerns on embodiment of this invention Schematic which shows the structure of the 1st arm part with which the angle meter which concerns on embodiment of this invention is provided. Schematic which shows the structure of the 2nd arm part with which the angle meter which concerns on embodiment of this invention is provided. Schematic which shows the structure of the adjustment knob with which the angle meter which concerns on embodiment of this invention is provided. Schematic which shows the structure of the shaft member contained in the axial part with which the angle meter which concerns on embodiment of this invention is provided. In the angle meter which concerns on embodiment of this invention, the schematic sectional drawing which shows the structure in which an axial part supports a 1st arm part, a 2nd arm part, and an adjustment knob.

  Hereinafter, an angle meter according to an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic plan view showing a configuration of an angle meter 1 according to an embodiment of the present invention. FIG. 1A is a top view, and FIG. 1B is a side view. As shown in FIG. 1, the goniometer 1 includes a first arm portion 10 on which an angle scale 11 is printed, and a second arm portion 20 on which an angle reading line 21 is printed. From the relationship between the angle scale 11 and the angle reading line 21, the angle formed by the first arm portion 10 and the second arm portion 20 is known. FIG. 1A shows a case where the angle formed by the first arm portion 10 and the second arm portion 20 is 0 °.

  As shown in FIG. 1B, the first arm portion 10 and the second arm portion 20 are overlapped so that the first arm portion 10 is on the top and the second arm portion 20 is on the bottom. Yes. Note that this overlapping method is merely an example, and the first arm unit 10 may be stacked on the lower side and the second arm unit 20 may be positioned on the upper side. The first arm portion 10 and the second arm portion 20 are supported by the shaft portion 30 so as to be relatively rotatable. That is, the angle formed by the first arm portion 10 and the second arm portion 20 can be changed as appropriate.

  FIG. 2 is a schematic view showing an example of use of the goniometer 1 according to the embodiment of the present invention. As shown in FIG. 2, the first arm portion 10 and the second arm portion 20 are rotated relative to each other and appropriately disposed with respect to the upper arm A1 and the forearm A2 of the arm. The range of motion can be measured. The goniometer 1 is not limited to the joint angle of the arm, but can of course be used to measure the joint angle of other parts of the body.

  By the way, the goniometer 1 of the present embodiment is characterized in that the relative ease of rotation between the first arm portion 10 and the second arm portion 20 can be adjusted. Hereinafter, in order to understand this point, the configuration of each member included in the angle meter 1 will be described in more detail.

  FIG. 3 is a schematic diagram illustrating a configuration of the first arm unit 10 provided in the goniometer 1 according to the embodiment of the present invention. 3A is a top view, and FIG. 3B is a cross-sectional view at the XX position in FIG. 3A. FIG. 3C is a diagram for explaining the configuration of the groove portion 12 formed in the first arm portion 10. The upper portion is an enlarged plan view of the groove portion 12, and the lower portion is a sectional view of the groove portion 12 from the side. It is the schematic when seen. In FIG. 3, the angle scale 11 printed on the first arm unit 10 is omitted.

  As shown in FIG. 3, the 1st arm part 10 is comprised by the plate of the shape where the protractor and the linear ruler were connected. Although there is no particular limitation, the first arm portion 10 can be formed of, for example, a transparent resin. A through hole 13 through which the shaft portion 30 is inserted is formed in the protractor-shaped portion of the first arm portion 10. In addition, a pair of grooves 12 having a substantially banana shape in top view are formed on the upper surface of the first arm portion 10 so as to surround the through hole 13. The pair of grooves 12 have a point-symmetric relationship with the through hole 13 as the center.

  As shown in FIG. 3C, the groove 12 has a configuration in which a plurality of (five in this example) recesses 121a to 121e having different depths are connected in an arc shape. Each of the recesses 121a to 121e has a substantially banana shape (in other words, a shape in which a donut is divided into a plurality of small pieces) when viewed from above.

  The depth of the first recess 121a located on one end side (left side in FIG. 3C) is the smallest, and gradually toward the other end side (clockwise in FIG. 3C). The depth is increasing. That is, the depth from the upper surface of the first arm portion 10 is deeper in the second recess 121b than in the first recess 121a, and deeper in the third recess 121c than in the second recess 121b. The fourth recess 121d is deeper than the third recess 121c, and the fifth recess 121e is deeper than the fourth recess 121d.

  A partition wall 122 exists between the recesses. Further, a stopper wall 123 that prevents an element that engages with the groove 12 from deviating from the groove 12 is provided next to the first recess 121a. The stopper wall 123 may not be provided depending on circumstances.

  FIG. 4 is a schematic diagram illustrating a configuration of the second arm unit 20 provided in the goniometer 1 according to the embodiment of the present invention. 4A is a top view, and FIG. 4B is a cross-sectional view at the YY position in FIG. 4A. In FIG. 4, the angle reading line 21 printed on the second arm portion 20 is omitted.

  As shown in FIG. 4, the 2nd arm part 20 is comprised by the plate of the substantially rectangular shape in planar view. In the present embodiment, the length of the second arm portion 20 in the longitudinal direction (left-right direction in FIG. 4) is, for example, the same as the length of the first arm portion 10 in the longitudinal direction. The length of the second arm portion 20 in the short direction (vertical direction in FIG. 4) is the same as the length of the straight arm portion of the first arm portion 10 in the short direction. The second arm portion 20 is formed with a through hole 22 for inserting the shaft portion 30 at a position corresponding to the through hole 13 of the first arm portion 10. Although not specifically limited, the second arm portion 20 can be formed of, for example, a white resin.

  FIG. 5 is a schematic diagram showing the configuration of the adjustment knob 40 provided in the angle meter 1 according to the embodiment of the present invention. 5A is a bottom view, and FIG. 5B is a cross-sectional view at the ZZ position in FIG. 5A. As shown in FIG. 1, the adjustment knob 40 is disposed so as to overlap with the upper surface side of the first arm portion 10 (the side opposite to the side on which the second arm portion 20 is overlapped), and is rotated around the shaft portion 30. Supported as possible. The adjustment knob 40 is used as a means for adjusting the rotational resistance between the first arm unit 10 and the second arm unit 20.

  As shown in FIG. 5, the adjustment knob 40 is formed in a donut shape, and the shaft portion 30 (see, for example, FIG. 1) is inserted through a through hole 41 provided in the center portion. On the lower surface of the adjustment knob 40, as shown in FIG. The shape of the pair of engaging convex portions 42 may be any shape that can be fitted into the concave portions 121a to 121e of the groove portion 12 provided in the first arm portion 10. In this embodiment, the shape is omitted in plan view as an example. A banana shape (in other words, a shape in which a donut is divided into a plurality of small pieces) is adopted.

  In addition, the engagement convex part 42 is made into two corresponding to the two groove parts 12 being formed in the 1st arm part 10. As shown in FIG.

  With reference to FIG.6 and FIG.7, the support structure of the 1st arm part 10, the 2nd arm part 20, and the adjustment knob 40 by the axial part 30 is demonstrated. FIG. 6 is a schematic diagram illustrating a configuration of the shaft member 31 included in the shaft portion 30 included in the goniometer 1 according to the embodiment of the present invention. 6A is a top view and FIG. 6B is a side view. FIG. 7 is a schematic cross-sectional view showing a structure in which the shaft portion 30 supports the first arm portion 10, the second arm portion 20, and the adjustment knob 40 in the angle meter 1 according to the embodiment of the present invention. is there.

  As shown in FIGS. 6 and 7, the shaft portion 30 includes a shaft member 31 including a cylindrical portion 311 and a flange portion 312 provided at one end (lower end) of the cylindrical portion 311. The cylindrical portion 311 of the shaft member 31 is inserted through the through hole 22 of the second arm portion 20, the through hole 13 of the first arm portion 10, and the through hole 41 of the adjustment knob 40 in this order. Thereafter, the O-ring 32 is attached to the cylindrical portion 311, and the rivet 33 is attached to the shaft member 31. Accordingly, the two arm portions 10 and 20 and the adjustment knob 40 can be prevented from falling off the shaft member 31, and the two arm portions 10 and 20 and the adjustment knob 40 can be rotatably supported by the shaft portion 30.

  The O-ring 32 may not be provided depending on circumstances. In the present embodiment, the shaft portion 30 includes the shaft member 31 and the rivet 33. By comprising in this way, it is easy to make the thickness of the angle meter 1 constant. However, the axial part 30 may be comprised with one member depending on the case.

  For example, when the angle meter 1 is assembled, the engagement protrusion 42 of the adjustment knob 40 is assembled so as to be fitted into the deepest fifth recess 121 e of the groove 12 of the first arm 10. In this state, the thickness of the member and the depth of the groove are adjusted so that the rotational resistance between the first arm portion 10 and the second arm portion 20 hardly occurs.

  If comprised in this way, the user (doctor etc.) of the goniometer 1 will be 1st by making the engagement convex part 42 of the adjustment knob 40, and the 5th recessed part 121e of the groove part 12 engage. The relative rotation between the arm unit 10 and the second arm unit 20 can be easily performed. Such a state is convenient, for example, when it is desired to use the goniometer 1 with one hand.

  On the other hand, in the state where there is not too much rotational resistance between the first arm part 10 and the second arm part 20, it may be difficult to use. For example, when it is desired to accurately measure the joint angle, relative rotation between the first arm unit 10 and the second arm unit 20 is not desired to occur easily. In such a case, the user turns the adjustment knob 40 to engage the engaging convex portion 42 with the shallow concave portion. Thereby, the rotational resistance between the 1st arm part 10 and the 2nd arm part 20 increases, and the angle between the two arm parts 10 and 20 can be fixed now in arbitrary positions.

  In addition, if the person who uses the angle meter is different, the preference for the ease of relative rotation between the first arm portion 10 and the second arm portion 20 may be different. In this respect, the angle meter 1 of the present embodiment can easily adjust the ease of relative rotation without using a tool according to preference. For this reason, the goniometer 1 of this embodiment is very easy to use.

  In the angle meter 1 of the present embodiment, the engagement convex portion 42 is easily displaced from the concave portion (any one of the concave portions 121a to 121e) being engaged due to the presence of the partition wall 122 and the O-ring 32 provided between the concave portions. It will not be disengaged (disengaged). Further, in the angle meter 1 of the present embodiment, it is easy to realize that the rotation resistance has been changed by turning the adjustment knob 40 due to the presence of the partition wall 122 provided between the recesses.

  The embodiment described above is merely an example of the present invention. The configuration of the embodiment described above may be changed as appropriate without departing from the technical idea of the present invention.

  For example, in the embodiment described above, the number of the groove portions 12 is two, but the number of the groove portions 12 is not limited to two, and the number may be changed as appropriate. In addition, when the number of the groove parts 12 is changed, it is necessary to also change the number of the engaging convex parts 42 of the adjustment knob 40. Moreover, the number of the recessed parts 121a-121e provided in the groove part 12 should just be two or more, and the number may be changed suitably.

  Moreover, in embodiment shown above, the groove part 12 decided to be the structure where the several recessed part 121a-121e from which depth differs was continued. This configuration is an example, and the groove portion provided in the first arm portion 10 is configured such that, for example, the bottom surface is formed in a stepped shape and the depth changes stepwise, or the bottom surface is provided in a tapered shape and the depth. It may be configured to gradually change. It should be noted that the shape of the engaging protrusion provided on the adjustment knob 40 may be changed as appropriate in accordance with the change in the structure of the groove.

  Further, the groove portion 12 that engages with the engagement convex portion 42 provided on the adjustment knob 40 may be provided on the second arm portion 20 instead of the first arm portion 10. In this case, the adjustment knob 40 may be disposed so as to overlap the second arm portion 20.

  Further, in the embodiment described above, the groove portion 12 is provided in the first arm portion 10, and the engaging convex portion 42 is provided in the adjustment knob 40. Not limited to this, the first arm portion 10 may be provided with an engaging convex portion, and the adjustment knob 40 may be provided with a groove portion.

  Moreover, in embodiment shown above, it was set as the structure by which the two arm parts which comprise the goniometer 1 are formed in plate shape. However, the scope of application of the present invention is not limited to this configuration. The present invention can also be applied when the two arm portions are formed of, for example, a cylindrical member.

DESCRIPTION OF SYMBOLS 1 Angle meter 10 1st arm part 11 Angle scale 12 Groove part 20 2nd arm part 21 Line for angle reading 30 Shaft part 40 Adjustment knob (adjustment means)
42 Engagement convex part 121a, 121b, 121c, 121d, 121c Concave part

Claims (6)

A first arm part;
A second arm portion provided to be rotatable relative to the first arm portion;
Adjusting means for adjusting a rotational resistance between the first arm portion and the second arm portion;
An angle meter comprising: A shaft portion that further supports the first arm portion and the second arm portion arranged to overlap the first arm portion so as to be relatively rotatable;
The adjusting means is disposed to overlap the first arm portion on the side opposite to the side on which the second arm portion overlaps, and is rotatably supported by the shaft portion.
The angle meter according to claim 1, wherein the rotation resistance is adjusted by rotation of the adjusting means. The first arm portion is formed with a groove portion whose depth changes,
The angle meter according to claim 2, wherein the adjusting means includes an engaging convex portion that engages with the groove portion. The groove is a structure in which a plurality of recesses whose depth changes stepwise is connected,
The angle meter according to claim 3, wherein the engagement convex portion is provided so as to be engageable with each of the plurality of concave portions.   The angle meter according to claim 3 or 4, wherein a plurality of the groove portions and the engaging convex portions are provided.   2. An angle scale is provided on one of the first arm part and the second arm part, and an angle reading line is provided on the other of the first arm part and the second arm part. The angle meter according to any one of 5.

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