JP2014085258A - Vibration pickup device and vibration measuring head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration pickup device for measuring a vibration amount weighted by characteristics of transmission of the vibration to an ear of a human body.SOLUTION: A vibration pickup device 55 for measuring an electronic apparatus 100 which presses a vibrating body 102 retained by a housing 100 to an ear of a human body and transmits noise to a user by vibration transmission includes: a tabular vibration transmission member 56 which can be attached to a peripheral part of an artificial external auditory canal 53 formed on an ear-type part 50 imitating the ear of the human body and has a hole 56a communicating with the artificial external auditory canal 53; and a vibration pickup 57 connected to a part of the vibration transmission member 56.

Description

  The present invention relates to a vibration pickup device and a vibration measurement head for measuring an amount of vibration by an electronic device that transmits sound to a user by vibration transmission by pressing a vibrating body held in a housing against a human ear. .

  Patent Document 1 describes an electronic device such as a mobile phone that transmits air conduction sound and bone conduction sound to a user (user). According to Patent Document 1, air conduction sound is sound transmitted to the auditory nerve of a user by vibration of air that is caused by vibration of an object being transmitted to the eardrum through the external auditory canal. Have been described. Patent Document 1 describes that bone conduction sound is sound transmitted to the user's auditory nerve through a part of the user's body (for example, cartilage of the outer ear) that contacts the vibrating object. ing.

  In the telephone set described in Patent Document 1, it is described that a short plate-like vibrating body made of a piezoelectric bimorph and a flexible material is attached to the outer surface of a housing via an elastic member. Further, in Patent Document 1, when a voltage is applied to the piezoelectric bimorph of the vibrating body, the vibrating body bends and vibrates as the piezoelectric material expands and contracts in the longitudinal direction, and the user contacts the vibrating body with the auricle. It is described that air conduction sound and bone conduction sound are transmitted to the user.

JP 2005-348193 A

  By the way, unlike the telephone described in the above-mentioned Patent Document 1, the inventors vibrate air conduction sound generated by vibrating a panel such as a display panel or a protection panel arranged on the surface of the mobile phone. We are developing mobile phones that transmit sound using vibration sound, which is the sound component of vibration transmission that is transmitted when the panel is placed on the human ear. In order to appropriately evaluate an electronic device that transmits some sound by vibration, such as a telephone set as disclosed in Patent Document 1 or a mobile phone developed by the inventors, the inventor can generate sound on the human body by vibration of the vibrating body. I have come to realize that it is preferable to measure how close the pressure and vibration are to the human body as much as possible. In general, the following two measuring methods are known as methods for measuring the vibration amount.

  The first measurement method is to measure a vibration amount as a voltage by pressing a vibrating body to be measured against an artificial mastoid for measuring a bone-conducting vibrator that mechanically simulates a milk projecting part behind an ear. . In the second measurement method, for example, a vibration pickup such as a piezoelectric acceleration pickup is pressed against a vibration body to be measured, and the amount of vibration is measured as a voltage.

  However, the measurement voltage obtained by the first measurement method is a voltage in which the characteristics of the human body when the vibrating body is pressed against the milk projecting part behind the human ear are mechanically weighted. The characteristic of vibration transmission when is pressed against the human ear is not a weighted voltage. The measurement voltage obtained by the second measurement method is obtained by directly measuring the vibration amount of the vibrating body from the vibrating object. Similarly, the characteristics of vibration transmission to the human ear are weighted. Not the voltage. Therefore, even if the vibration amount of the vibrating body is measured by the conventional measurement method, the vibration amount transmitted from the electronic device to the human body cannot be correctly evaluated. For this reason, it is desired to develop an apparatus capable of measuring a vibration amount weighted with a characteristic of vibration transmission to a human ear.

  The present invention has been made in response to the above-described demand, and a vibration pickup device and vibration for measuring a vibration amount weighted by characteristics of vibration transmission to each part of a human ear, particularly cartilage of the ear. The object is to provide a measuring head.

A measurement pickup device according to the present invention that achieves the above object is a vibration pickup device for measuring an electronic device that transmits a sound to a user by vibration transmission by pressing a vibration body held in a housing against an ear of a human body. And
A plate-like vibration transmission member that can be attached to the periphery of an artificial external ear canal formed on an ear mold that simulates a human ear and has a hole communicating with the artificial external ear canal, and is coupled to a part of the vibration transmission member And a vibration pickup.

  The hole of the vibration transmitting member may have a diameter of 5 mm to 18 mm.

  The vibration transmitting member may have a ring shape.

  The vibration transmission member may have an outer diameter obtained by adding 6 mm to 12 mm to the diameter of the hole.

  The vibration pickup may be a piezoelectric acceleration pickup.

Furthermore, the vibration measuring head according to the present invention that achieves the above object is a vibration measuring head for measuring an electronic device that transmits a sound to a user by vibration transmission by pressing a vibrating body held by a housing against a human ear. Because
An ear mold that imitates an ear of a human body, and the vibration pickup device described above,
In the vibration pickup device, the hole formed in the vibration transmission member communicates with the artificial ear canal, and the vibration transmission member is attached to a peripheral portion of the artificial ear canal formed in the ear mold portion.

  The ear mold portion may include a mounting portion that detachably mounts the vibration pickup device in a predetermined positional relationship.

  The mounting portion may include an insertion holding portion that holds the vibration transmission member in a detachable manner, and a positioning portion that positions a position of the vibration pickup with respect to the ear mold portion.

  A head model of a human body may be further provided, and the ear mold part may be detachable from the head model as an artificial ear constituting the head model.

The ear mold unit includes an ear model and an artificial external ear canal unit coupled to the ear model,
The artificial ear canal may be formed in the artificial ear canal portion.

  The artificial external auditory canal is preferably 8 to 30 mm in length to the hole formed in the vibration transmitting member of the vibration pickup device.

    The ear mold portion may be made of a material that conforms to IEC60318-7.

  The ear mold unit may further include a microphone device for measuring a sound pressure of sound propagated through the artificial external ear canal.

  The microphone device may include a microphone held by a tube member extending from an outer wall of the artificial external ear canal.

  The microphone device may include a microphone arranged in a floating state from the outer wall of the artificial external ear canal.

  ADVANTAGE OF THE INVENTION According to this invention, the vibration pick-up apparatus and vibration measurement head for measuring the vibration amount by which the characteristic of the vibration transmission to the ear of a human body was weighted can be provided.

It is a figure which shows schematic structure of the measuring apparatus using the vibration measuring head which concerns on 1st Embodiment of this invention. It is a top view which shows an example of the electronic device of a measuring object. It is a figure which shows the structure of the vibration pick-up apparatus of FIG. FIG. 2 is a partial detail view of the vibration measuring head of FIG. 1. It is a functional block diagram of the principal part of the measuring apparatus of FIG. It is explanatory drawing of the ear mold | type part of FIG. It is a figure which shows an example of the measurement result by the vibration pick-up of the vibration test by the ear-shaped part of FIG. It is a figure which shows an example of the measurement result by the laser displacement meter of the vibration test by the ear-shaped part of FIG. It is a figure for demonstrating the structure of the principal part of the vibration measuring head which concerns on 2nd Embodiment of this invention. It is a figure which shows schematic structure of the measuring apparatus using the vibration measuring head which concerns on 3rd Embodiment of this invention. FIG. 11 is a partial detail view of the measuring apparatus of FIG. 10.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a diagram showing a schematic configuration of a measuring apparatus using a vibration measuring head according to a first embodiment of the present invention. The measurement apparatus 10 according to the present embodiment includes a vibration measurement head 40 supported by a base 30 and a holding unit 70 that holds an electronic device 100 to be measured. In the following description, the electronic device 100 is a mobile phone such as a smartphone having a rectangular panel 102 larger than a human ear on the surface of a rectangular casing 101 as shown in a plan view in FIG. Assume that the panel 102 vibrates as a vibrating body. First, the vibration measuring head 40 will be described.

  The vibration measuring head 40 includes an ear mold portion 50 and a vibration pickup device 55. The ear mold part 50 imitates the human ear and includes an ear model 51 and an artificial external ear canal part 52 coupled to the ear model 51. The ear mold 50 shown in FIG. 1 corresponds to the left ear of a person. An artificial external ear canal 53 is formed in the central portion of the artificial external ear canal portion 52. The artificial external ear canal 53 is formed with a hole diameter of 7 mm to 8 mm, which is an average diameter of a human external ear canal. The ear mold part 50 is detachably supported by the base 30 via a support member 54 at the peripheral part of the artificial external ear canal part 52.

  The ear mold part 50 is made of, for example, a material similar to the material of an average ear model used for, for example, HATS (Head And Torso Simulator) of a human body model or KEMAR (a name of an electronic mannequin for acoustic research of Knowles). It consists of the material based on IEC60318-7. This material can be formed of a material such as rubber having a hardness of 35 to 55, for example. The rubber hardness may be measured in accordance with, for example, international rubber hardness (IRHD / M method) compliant with JIS K 6253 or ISO 48. Moreover, as a hardness measuring apparatus, the fully automatic type IRHD * M method micro size international rubber hardness tester GS680 by Teclock Co., Ltd. is used suitably. In consideration of the variation in the hardness of the ear depending on the age, the ear mold portion 50 may be prepared by roughly preparing two to three types of different hardness, and replacing them.

  The thickness of the artificial external auditory canal 52, that is, the length of the artificial external auditory canal 53 corresponds to the length to the human eardrum (cochlea), and is appropriately set within a range of, for example, 5 mm to 50 mm, preferably 8 mm to 30 mm. . In the present embodiment, the length of the artificial external ear canal 53 is approximately 30 mm.

  The vibration pickup device 55 has a plate-like shape having a hole 56a having substantially the same diameter as that of the artificial external ear canal 53, for example, a diameter of 15 mm, as shown in FIG. 3A and a front view in FIG. Vibration transmission member 56, and one vibration pickup 57 coupled to a part of one surface of the vibration transmission member 56. In the present embodiment, the other surface of the vibration transmitting member 56 is bonded to the end surface of the artificial external auditory canal portion 52 opposite to the ear model 51 side so that the hole 56a communicates with the artificial external auditory canal 53. The vibration pickup 57 is coupled to one surface of the vibration transmission member 56 via, for example, grease. The vibration pickup device 55 will be further described later.

  Furthermore, the vibration measurement head 40 according to the present embodiment includes a microphone device 60 for measuring the sound pressure of the sound propagated through the artificial external ear canal 53. As shown in FIG. 4A, the microphone device 60 is a plan view seen from the base 30 side, and FIG. 4B is a cross-sectional view taken along the line bb of FIG. A tube member 61 extending from an outer wall (peripheral wall of the hole) through a hole 56a of a vibration transmission member 56 of the vibration pickup device 55, and a microphone 62 held by the tube member 61 are provided. The microphone 62 includes, for example, a measurement capacitor microphone having a flat output characteristic in the measurement frequency range of the electronic device 100 and a low self-noise level. The microphone 62 is arranged such that the sound pressure detection surface substantially coincides with the end surface of the artificial external ear canal unit 52. The microphone 62 may be arranged in a floating state from the outer wall of the artificial ear canal 53 while being supported by the artificial ear canal unit 52 or the base 30, for example. In FIG. 4A, the artificial external auditory canal portion 52 has a rectangular shape, but the artificial external auditory canal portion 52 can have an arbitrary shape.

  Next, the holding unit 70 will be described. In the case where the electronic device 100 is a mobile phone having a rectangular shape in a plan view such as a smartphone, when a person tries to hold the mobile phone with one hand and press it against his / her ear, the both sides of the mobile phone are usually held by hands. Will be supported by. Further, the pressing force and contact posture of the mobile phone against the ear vary depending on the person (user) or fluctuates during use. In the present embodiment, electronic device 100 is held by imitating such a usage mode of a mobile phone.

  Therefore, the holding part 70 includes support parts 71 that support both side parts of the electronic device 100. The support portion 71 is attached to one end portion of the arm portion 72 so as to be rotatable and adjustable around an axis y1 parallel to the y axis in a direction in which the electronic device 100 is pressed against the ear mold portion 50. The other end of the arm portion 72 is coupled to a movement adjusting portion 73 provided on the base 30. The movement adjusting unit 73 moves the arm unit 72 in the direction parallel to the x axis orthogonal to the y axis, the vertical direction x1 of the electronic device 100 supported by the support unit 71, and the z axis orthogonal to the y axis and the x axis. In a direction parallel to the direction z1 in which the electronic device 100 is pressed against the ear mold portion 50.

  As a result, the electronic device 100 supported by the support portion 71 adjusts the support portion 71 about the axis y1 or adjusts the movement of the arm portion 72 in the z1 direction. 102) is pressed against the ear mold 50. In the present embodiment, the pressing force is adjusted in the range of 0N to 10N, preferably in the range of 3N to 8N.

  Here, the range of 0N to 10N is for the purpose of enabling measurement in a sufficiently wide range than the pressing force assumed when a person presses an electronic device against his / her ear to use a telephone call or the like. Yes. In the case of 0N, for example, not only when the ear mold part 50 is in contact but not pressed, it can be held away from the ear mold part 50 by 1 cm so that measurement can be performed at each separation distance. It may be. Thereby, the degree of attenuation due to the distance of the airway sound can be measured by the microphone 62, and the convenience as a measuring apparatus is improved. In addition, the range of 3N to 8N usually assumes an average force range that a normal hearing person presses against an ear when making a call using a conventional speaker. Although there may be differences depending on race and gender, in general, in electronic devices such as smartphones and conventional mobile phones equipped with conventional speakers, vibration and airway sounds are usually generated with a pressing force that is pressed by the user. It is preferable that it can be measured.

  Further, by adjusting the movement of the arm portion 72 in the x1 direction, the contact posture of the electronic device 100 with respect to the ear mold portion 50 is, for example, the posture in which the vibrating body (panel 102) covers almost the entire ear mold portion 50, As shown in FIG. 1, the vibrating body (panel 102) is adjusted so as to cover a part of the ear mold 50. The arm portion 72 is configured to be movable and adjustable in a direction parallel to the y-axis, or is configured to be rotatable and adjustable around an axis parallel to the x-axis and the z-axis, so that the ear-shaped portion 50 can be adjusted. Thus, the electronic device 100 may be configured to be adjustable to various contact postures.

  FIG. 5 is a functional block diagram of the main part of the measuring apparatus 10 according to the present embodiment. The vibration pickup 57 and the microphone 62 are connected to the signal processing unit 75. Based on the outputs of the vibration pickup 57 and the microphone 62, the signal processing unit 75 measures the vibration amount of the electronic device 100 through the artificial external ear canal unit 52 and the sound pressure through the artificial external ear canal 53. The signal processing unit 75 measures the audibility based on the measured vibration amount and sound pressure. These measurement results are output to an output unit 76 such as a display unit, a printer, and a storage unit, and are used for evaluation of the electronic device 100.

  Here, the vibration pickup device 55 will be described in more detail. 6 is a plan view of the ear-shaped portion 50 with the vibration pickup device 55 removed from the vibration measuring head 40 of FIG. 1 as viewed from the base 30 side. FIG. 6 shows the periphery of the hole of the artificial external ear canal 53 divided into eight regions A1 to A8 for convenience. The ear model 51 in FIG. 1 is a model of the human left ear, and the region A4 in FIG. 6 mainly corresponds to the upper part of the ear model 51 on the side of the ear ring, and the region A5 mainly corresponds to the tragus side. doing.

  7 and 8 are diagrams each showing an example of the measurement result of the vibration test of the ear mold 50 shown in FIG. The measurement results of FIG. 7 are obtained by setting the ear mold part 50 of FIG. 6 on the base 30, setting the electronic device 100 on the holding part 70, and pressing the panel 102 against the ear mold part 50. The vibration amounts of the regions A1 to A8 of the ear mold portion 50 when vibrating in the frequency range of 500 Hz to 3.5 kHz are shown. The amount of vibration was measured by sequentially bonding one vibration pickup to the regions A1 to A8 via a double-sided tape. In FIG. 7, A0 indicates the result of measuring the vibration amount of the panel 102 of the electronic device 100 with the same vibration pickup. Further, the measurement result of FIG. 8 shows the end face on the base 30 side of the ear-shaped part 50 when the panel 102 of the electronic device 100 is vibrated at a predetermined frequency (for example, 2000 Hz) as in the case of the measurement of FIG. The state of vibration is measured with a laser displacement meter.

  As is apparent from FIG. 7, the frequency characteristics of vibration detected in the regions A1 to A8 are different from the frequency characteristics A0 of vibration of the panel 102, respectively. Therefore, if one region is specified and one vibration pickup is attached, the detection accuracy of the vibration component transmitted to the auditory nerve is reduced. In addition, if vibration pickups are attached to each of multiple areas to increase detection accuracy, the processing speed of the measurement device decreases and the cost of the measurement device increases as the processing signal increases, and the weight of the vibration pickup increases. There is a concern that the detection accuracy of minute vibrations may decrease.

  Further, as apparent from FIG. 8, the displacement amount of the ear mold portion 50 due to the vibration of the panel 102 of the electronic device 100 appears greatly in the tragus line of the ear model 51 including the regions A3, A5, and A8. In addition, the regions A1 to A8 are not uniformly displaced as a whole, but mainly the regions corresponding to the peripheral portion of the artificial external ear canal 53 are displaced.

  Based on the above measurement results, the vibration pickup device 55 according to the present embodiment includes a plate-like vibration transmission member 56 having a hole 56a having a diameter larger than that of the artificial ear canal 53, and one surface of the vibration transmission member 56. One vibration pickup 57 coupled to a part thereof is provided. The vibration pickup device 55 has a surface of the vibration transmission member 56 to which the vibration pickup 57 is not coupled so that the hole 56a of the vibration transmission member 56 communicates with the artificial external ear canal 53 without shielding the artificial external ear canal 53. It is attached to the artificial external auditory canal 52 around the external auditory canal 53 by bonding or the like.

  Here, the vibration transmission member 56 can be made of a material having good vibration transmission efficiency, for example, metal, alloy such as iron, SUS, brass, aluminum, titanium, or plastic, but is light in terms of detection sensitivity. Preferably, it is made of a material. The vibration transmitting member 56 may have a rectangular outer shape such as a square flat washer, but in the present embodiment, as shown in FIG. Since it is large at the periphery, the ring shape is similar to a round flat washer. The ring-shaped outer shape can be formed, for example, by adding 6 to 12 mm to the diameter of the hole 56a, that is, the width of the ring on both sides in the radial direction of the hole 56a is about 5 mm. Further, the thickness of the vibration transmitting member 56 is appropriately set according to the strength of the material.

  As the vibration pickup 57, a known small vibration pickup can be used. In the present embodiment, a piezoelectric acceleration pickup is used as the vibration pickup 57, and the piezoelectric acceleration pickup is attached to the vibration transmission member 56 via a bonding member such as grease or an instantaneous adhesive such as Aron Alpha (registered trademark). Are connected. 7 and 8, the vibration amount of the panel 102 of the electronic device 100 is easily transmitted to the regions A3, A5, and A8 of the ear mold portion 50. Therefore, in the vibration pickup device 55, the vibration pickup 57 is opposed to a part of the regions A3, A5, A8 via the vibration transmission member 56, for example, facing the region A5, or straddling the region A5 and the region A8. As such, it is preferably attached to the artificial external ear canal unit 52. FIG. 4 illustrates the case where the vibration pickup device 55 is mounted so that the vibration pickup 57 faces the region A5.

  According to the measurement apparatus 10 according to the present embodiment, vibration transmitted to the peripheral portion of the artificial external ear canal 53 can be transmitted to the single vibration pickup 57 via the vibration transmission member 56 and detected by the vibration pickup apparatus 55. . As a result, the vibration pickup device 55 can be reduced in weight, and a wide area vibration in the peripheral portion of the artificial external ear canal 53 can be detected. Therefore, since a high-level detection signal with a good S / N can be obtained from the vibration pickup 57, the vibration component transmitted to the auditory nerve can be detected with high accuracy.

  Moreover, according to the measurement apparatus 10 according to the present embodiment, it is possible to measure the vibration level weighted by the characteristics of vibration transmission to the human ear, so that the electronic device 100 can be correctly evaluated. In addition, the sound pressure through the artificial external auditory canal 53 can be measured simultaneously with the vibration level, thereby synthesizing the vibration level corresponding to the vibration transmission amount to the human ear and the sound pressure level corresponding to the air conduction sound. Since the level can be measured, the electronic device 100 can be evaluated in more detail. Furthermore, since the pressing force with respect to the ear mold part 50 of the electronic device 100 can be varied and the contact posture can also be varied, the electronic device 100 can be evaluated in various modes.

(Second Embodiment)
FIGS. 9A and 9B are diagrams for explaining the configuration of the main part of the vibration measuring head according to the second embodiment of the present invention. FIG. 9A shows a partial cross-sectional view of the artificial external ear canal portion 52 before the vibration pickup device 55 is attached, and FIG. 9B is a bottom view of the artificial external ear canal portion 52 after the vibration pickup device 55 is attached. is there. The vibration measurement head 41 according to the present embodiment has a vibration pickup at the end portion (bottom surface side) of the artificial external ear canal portion 52 opposite to the ear model 51 in the configuration of the vibration measurement head 40 according to the first embodiment. The mounting part 42 which mounts | wears with the apparatus 55 so that attachment or detachment with a predetermined positional relationship is provided. The mounting portion 42 includes an insertion holding portion 43 for the vibration transmitting member 56 and a positioning portion 44 for the vibration pickup 57. The insertion holding portion 43 includes an opening 45 concentrically continuing to the artificial external ear canal 53 and a large-diameter space portion 46 communicating with the opening 45. The positioning portion 44 is formed by cutting out the insertion holding portion 43 so that the vibration pickup 57 protrudes from a predetermined region of the push-in portion 43, for example, a region corresponding to the region A5 in FIG. The notch of the positioning portion 44 communicates with the opening 45 as well.

  According to the vibration measuring head 41 according to the present embodiment, when the vibration pickup device 55 is mounted on the mounting portion 42 of the ear mold portion 50, the bottom surface of the insertion holding portion 43 so that the vibration pickup 57 protrudes from the positioning portion 44. The vibration transmitting member 56 is inserted into the insertion holding portion 43 and held in the large-diameter space portion 46 while expanding the artificial outer ear canal portion 52 on the side in a range where plastic deformation does not occur. Thus, in the vibration pickup device 55, the vibration transmitting member 56 has a hole 56a of the vibration transmitting member 56 communicated substantially concentrically with the artificial external ear canal 53 and the opening 45, and in a predetermined positional relationship with the ear mold portion 50. Are embedded and held in the large-diameter space 46. Further, when removing the vibration pickup device 55 from the mounting portion 42 of the ear mold portion 50, the artificial external ear canal portion 52 on the bottom surface side of the insertion holding portion 43 is widened without plastic deformation, and the vibration transmission member 56 is inserted into the insertion holding portion 43. The vibration pickup device 55 can be removed from the mounting portion 42 by being pulled out from the mounting portion 42. Therefore, it is possible to easily cope with the replacement of the ear mold portion 50 and the replacement of the vibration pickup device 55. Other effects are the same as those of the first embodiment.

(Third embodiment)
FIG. 10 is a diagram showing a schematic configuration of a measuring apparatus using the vibration measuring head according to the third embodiment of the present invention. Measuring apparatus 110 according to the present embodiment includes a human head model 130 and a holding unit 150 that holds electronic device 100 to be measured. The head model 130 is made of, for example, HATS or KEMAR. The artificial ear 131 of the head model 130 is detachable from the head model 130.

  As shown in a side view of the artificial ear 131 removed from the head model 130 in FIG. 11A, the artificial ear 131 is coupled to the ear model 132 similar to the ear mold unit 50 of the first embodiment, and the ear model 132. And an artificial external ear canal part 134 in which an artificial external ear canal 133 is formed. In the artificial external auditory canal portion 134, a vibration pickup device 135 including a vibration transmitting member 56 and a vibration pickup 57 is disposed around the opening of the artificial external auditory canal 133, similarly to the ear mold portion 50 of the first embodiment. Therefore, in the present embodiment, the artificial ear 131 and the vibration pickup device 135 constitute a vibration measuring head. FIG. 11A shows the right artificial ear 131 viewed from the rear. In addition, a microphone device 136 having a microphone at the center is arranged on the mounting portion of the artificial ear 131 of the head model 130 as shown in FIG. An opening 137 into which the vibration pickup 57 of the vibration pickup device 135 is fitted is formed. The microphone device 136 is disposed so as to measure the sound pressure of the sound propagated through the artificial external auditory canal 133 of the artificial ear 131 when the artificial ear 131 is attached to the head model 130. The microphone device 136 may be disposed on the artificial ear 131 side in the same manner as the ear mold unit 50 of the first embodiment.

  The holding unit 150 is detachably attached to the head model 130, and includes a head fixing unit 151 to the head model 130, a support unit 152 that supports the electronic device 100 to be measured, and a head fixing unit 151. And a multi-joint arm portion 153 for connecting the support portion 152. The holding unit 150 can adjust the pressing force and the contact posture with respect to the artificial ear 131 of the electronic device 100 supported by the support unit 152 through the articulated arm unit 153 in the same manner as the holding unit 70 of the first embodiment. It is configured.

  According to the measuring apparatus 110 according to the present embodiment, the same effects as those of the measuring apparatus 10 according to the first embodiment can be obtained. In particular, in this embodiment, since the vibration measuring head having the vibration detection artificial ear 131 and the vibration pickup device 135 is detachably attached to the human head model 130, the electronic device 100 is evaluated. It is possible to evaluate in accordance with the actual usage mode in consideration of the influence of the above.

  In addition, this invention is not limited only to the said embodiment, Many deformation | transformation or a change is possible. For example, in the above-described embodiment, it is assumed that the electronic device 100 to be measured is a mobile phone such as a smartphone and the panel 102 vibrates as a vibrating body. An electronic device in which a panel in contact with the ear vibrates can be similarly evaluated. Moreover, not only a mobile phone but other piezoelectric receivers can be evaluated in the same manner. In the third embodiment, the artificial ear 131 may be provided with a mounting portion that detachably mounts the vibration pickup device 55 in a predetermined positional relationship, as in the second embodiment.

DESCRIPTION OF SYMBOLS 10 Measurement apparatus 30 Base 40, 41 Vibration measurement head 42 Mounting part 43 Insertion holding part 44 Positioning part 45 Opening 46 Large diameter space part 50 Ear mold part 51 Ear model 52 Artificial ear canal part 53 Artificial ear canal part 54 Support member 55 Vibration pickup apparatus DESCRIPTION OF SYMBOLS 56 Vibration transmission member 60 Microphone apparatus 61 Tube member 62 Microphone 70 Holding part 71 Support part 72 Arm part 73 Movement adjustment part 75 Signal processing part 76 Output part 100 Electronic device 101 Case 102 Panel (vibration body)
DESCRIPTION OF SYMBOLS 110 Measuring apparatus 130 Head model 131 Artificial ear 132 Ear model 133 Artificial ear canal 134 Artificial ear canal part 135 Vibration pickup apparatus 136 Microphone apparatus 150 Holding part 151 Head fixing part 152 Support part 153 Articulated arm part

Claims (15)

A vibration pickup device for measuring an electronic device that presses a vibration body held in a housing against a human ear and transmits sound to a user by vibration transmission,
A plate-like vibration transmission member that can be attached to a peripheral portion of an artificial external auditory canal formed on an ear mold that imitates an ear of a human body, and has a hole that communicates with the artificial external ear canal, and a part of the vibration transmission member And a vibration pickup device coupled to the vibration pickup device.   The vibration pickup device according to claim 1, wherein the hole of the vibration transmission member has a diameter of 5 mm to 18 mm.   The vibration pickup device according to claim 1, wherein the vibration transmission member has a ring shape.   The vibration pickup device according to claim 3, wherein the vibration transmission member has an outer diameter obtained by adding 6 mm to 12 mm to the diameter of the hole.   The vibration pickup device according to claim 1, wherein the vibration pickup is a piezoelectric acceleration pickup. A vibration measurement head for measuring an electronic device that presses a vibration body held in a housing against a human ear and transmits sound to a user by vibration transmission,
An ear mold that simulates an ear of a human body, and the vibration pickup device according to any one of claims 1 to 5,
In the vibration pickup device, the hole formed in the vibration transmission member communicates with the artificial ear canal, and the vibration transmission member is attached to a peripheral portion of the artificial ear canal formed in the ear mold portion. Measuring head.   The vibration measurement head according to claim 6, wherein the ear mold part includes a mounting part that detachably mounts the vibration pickup device in a predetermined positional relationship.   The vibration measurement head according to claim 7, wherein the mounting portion includes an insertion holding portion that holds the vibration transmission member in a detachable manner, and a positioning portion that positions a position of the vibration pickup with respect to the ear mold portion.   The vibration according to any one of claims 6 to 8, further comprising a human head model, wherein the ear mold part is detachable from the head model as an artificial ear constituting the head model. Measuring head. The ear mold unit includes an ear model and an artificial external ear canal unit coupled to the ear model,
The vibration measuring head according to any one of claims 6 to 9, wherein the artificial external auditory canal is formed in the artificial external auditory canal.   The vibration measurement according to any one of claims 6 to 10, wherein a length of the artificial external auditory canal to the hole formed in the vibration transmitting member of the vibration pickup device is 8 mm to 30 mm. head.   The vibration measuring head according to claim 6, wherein the ear mold part is made of a material that conforms to IEC60318-7.   The vibration measurement head according to any one of claims 6 to 12, wherein the ear mold unit further includes a microphone device for measuring a sound pressure of sound propagated through the artificial external auditory canal.   The vibration measurement head according to claim 13, wherein the microphone device includes a microphone held by a tube member extending from an outer wall of the artificial external ear canal. The vibration measurement head according to claim 13, wherein the microphone device includes a microphone arranged in a floating state from an outer wall of the artificial external ear canal.

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