JP3046282B2 - Ultrasonic beauty device and high frequency beauty device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic cosmetic device and a high-frequency cosmetic device capable of performing skin beauty using ultrasonic waves or high frequencies.

[0002]

2. Description of the Related Art An ultrasonic cosmetic device or a high-frequency cosmetic device of this type is used for the purpose of cosmetic treatment of the skin, but the ultrasonic cosmetic device is designed to generate a massage effect by applying ultrasonic waves to the skin. On the other hand, the high-frequency cosmetic device is also configured to generate a thermal effect by applying high frequency to the skin. In other words, this type of ultrasonic cosmetic device (or high-frequency cosmetic device) exposes an ultrasonic head (or high-frequency head) on the outer surface of a case body and generates an ultrasonic wave generated by an ultrasonic generator (or high-frequency generator). Sound wave (or high frequency) is applied to the ultrasonic head (or high frequency head)
From the skin to the skin.

By the way, in order to efficiently transmit ultrasonic waves and high frequencies to the skin, it is necessary to interpose moisture between the ultrasonic head (high frequency head) and the skin surface. Beauty device)
After applying water (gel) to the skin surface, the ultrasonic head (or high-frequency head) is brought into contact with the skin where the water adheres.

[0004]

However, when a conventional ultrasonic cosmetic device or high-frequency cosmetic device is used, it is necessary to apply moisture to the skin surface using a separate liquid container (container containing gel). Two instruments (ultrasonic or high-frequency cosmetic device and liquid container) are required to perform cosmetic work using sound waves (or high-frequency), which makes storage or carrying complicated, and removes liquid from the liquid container during cosmetic work. Since the operation of applying water (gel) and the operation of contacting the ultrasonic head (or high-frequency head) of the ultrasonic cosmetic device (or high-frequency cosmetic device) must be performed separately (replacement), these operations are troublesome. There was a problem of becoming. In addition, when applying water (gel) to the skin surface prior to using an ultrasonic cosmetic device (or high-frequency cosmetic device), conventionally, for example, a sponge-like material impregnated with water is applied directly to the skin. However, there is also a problem that the amount of applied moisture is difficult to be uniform (more than a necessary amount of moisture adheres partially), and a liquid flow occurs in a portion where the amount of moisture is large.

In view of the above-mentioned conventional problems, the present invention incorporates a liquid container and a spraying device integrally into an ultrasonic beauty device or a high-frequency beauty device to achieve compactness and simplification during beauty work. It is a first object of the present invention to provide an ultrasonic cosmetic device and a high-frequency cosmetic device capable of preventing a liquid flow of water adhering to the skin from occurring. The second is to add a cleansing function and an active ingredient introduction function.
The purpose is.

[0006]

The present invention has the following structure as means for solving the above-mentioned problems. The invention of claim 1 of the present application The invention of claim 1 of the present application is directed to an ultrasonic cosmetic device. The ultrasonic cosmetic device according to claim 1 includes an ultrasonic head for outputting ultrasonic waves generated by an ultrasonic generator, a liquid container containing a liquid, and a mist of the liquid in the liquid container. And a spraying device for jetting in a shape.

[0007] The body case is made of plastic and has a size (for example, a length of 180 mm and a thickness of 4 mm) that can be held and used in a hand.
(About 0 to 50 mm).

The ultrasonic generator and the power source (battery) may be incorporated in the case, but may be provided separately from the case. The ultrasonic head is exposed on the lower surface side of the body case. Incidentally, the ultrasonic output from the ultrasonic head is made adjustable in the range of, for example, 0.5~3MH _Z.

The liquid container may be formed integrally with the body case, but another liquid container may be detachably attached to the case. In this liquid container, water or lotion is stored depending on the application. Note that the liquid in the liquid container may be led out of the liquid container via a liquid retaining material such as felt or sponge.

[0010] As the spraying device, an ultrasonic spraying device in which a vibrating plate having a large number of fine holes is vibrated by a piezoelectric vibrator is employed. In this case, it is preferable that the minute holes of the diaphragm are formed to have a diameter of, for example, 0.1 mm or less. In this ultrasonic spraying device, the liquid from the liquid container is guided to the one side of the diaphragm by the liquid retaining material, and the diaphragm is vibrated so that the liquid is ejected in the form of a mist through each minute hole. Can be. The operation switch of the spraying device may be formed at a position where a finger is located when the body case is gripped in use. The spraying port of this spraying device is convenient when formed at a position close to the ultrasonic head on the lower surface side of the case body (for example, a position close to the front of the ultrasonic head).

The ultrasonic cosmetic device according to the first aspect is used as follows. That is, the liquid container containing the liquid is set in the case, and the spraying device (ultrasonic spraying device) is operated in a state in which the spraying port is held close to the skin surface at the position where the beauty is desired by holding the case. Then, the liquid in the liquid container is sprayed out of the spray port by the spraying device and adheres to the skin surface. However, the sprayed mist particles are extremely small (for example, 5 μm).
0 μm), and the liquid flow does not occur unless a large amount is sprayed in one place. Then, when the ultrasonic generator is operated with the ultrasonic head in contact with the skin surface on which the liquid is adhered in the form of a mist, ultrasonic waves are output from the ultrasonic head. Since the liquid is interposed between the surfaces in the form of a film, the transmission efficiency of the ultrasonic wave to the skin is improved, and the massage action on the skin is favorably performed.

As described above, in the ultrasonic cosmetic device according to the first aspect of the present invention, since the ultrasonic head, the liquid container, and the spraying device are assembled in the body case, the operation of applying the liquid to the skin surface and the ultrasonic The massage operation using sound waves can be performed with a single device. According to the second aspect of the present invention, in the ultrasonic cosmetic device according to the first aspect, one of the two electrode terminals connected to a DC power supply is connected to an ultrasonic head. On the other hand, the other electrode terminal is connected to an electrode plate mounted at a suitable position on the outer surface of the case. The electrode plate to which the other electrode terminal is connected is attached to a position where the electrode plate contacts the hand when the body case is grasped.

Each of the electrode terminals according to the second aspect of the present invention has a cleansing function for removing dirt in pores of the skin, and can be pushed into the true layer of the skin while, for example, the active ingredient in the lotion is ionized. It has a function of introducing ions. For example, dirt in the pores of the skin is generally positive, and by setting the direction of the current so that the ultrasonic head becomes negative, the dirt of the positive polarity is removed.
It can be electrically attracted to the polar ultrasonic head side and exerts a cleansing function. The iontophoresis function is disclosed in detail in Japanese Patent No. 2667379. That is,
Under the stratum corneum of the skin, there is a barrier zone for preventing the permeation of moisture, and the active ingredient is hardly absorbed into the inside of the skin (stratified layer) in an aqueous solution. However, by ionizing the active ingredient of the lotion and electrically repelling and sucking the ionized active ingredient on the skin surface, the active ingredient can be efficiently pushed into the skin. The active ingredient of the lotion is + ion and-
In the case of ions, it is necessary to set the electrode terminal on the ultrasonic head side to the same ion polarity as the active ingredient of the lotion, but by providing a changeover switch for switching the direction of current flow in the electric circuit, Preferably, the polarity of each electrode terminal can be changed. The invention of claim 3 of the present application The invention of claim 3 of the present application is directed to a high-frequency cosmetic device. The high-frequency beauty device according to the third aspect is configured such that a high-frequency head for outputting the high frequency generated by the high-frequency generator, a liquid container containing the liquid, and the liquid in the liquid container are ejected in the form of a mist. A spray device is provided, and as the spray device, an ultrasonic spray device in which a diaphragm having a large number of fine holes is vibrated by a piezoelectric vibrator is used.

According to a third aspect of the present invention, there is provided the high-frequency cosmetic device according to the first aspect of the present invention, wherein the ultrasonic generator and the ultrasonic head are replaced with a high-frequency generator and a high-frequency head, respectively. The other configuration is the same as that of the first aspect.

In the case of this high-frequency cosmetic device, too, moisture must be interposed to efficiently transmit the high frequency output from the high-frequency head to the skin side, and a liquid container and a spraying device are assembled in a body case. In other words, the function of applying water in the form of a mist and the function of heating by the high-frequency head can be achieved with a single device. The invention according to claim 4 of the present application is the high-frequency beauty device according to claim 3, wherein one of the two electrode terminals connected to a DC power supply is connected to a high-frequency head, It is characterized in that the other electrode terminal is connected to an electrode plate mounted in a suitable position on the outer surface of the case.

The function of each electrode terminal according to the fourth aspect of the present invention is the same as that of the second aspect. In this high-frequency beauty device, in addition to the heating function by high frequency, the cleansing function by each electrode terminal And an iontophoresis function can be added.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. FIGS. 1 to 3 show an embodiment in which the present invention is applied to an ultrasonic cosmetic device. FIG. 4 shows an embodiment in which the present application is applied to a high-frequency beauty device.

In the ultrasonic cosmetic device according to the embodiment shown in FIGS. 1 to 3, an ultrasonic head 22 for outputting ultrasonic waves generated by an ultrasonic generator 21 and a liquid W are accommodated in a body case 1. The liquid container 3 and the liquid W in the liquid container 3 are atomized (reference F).
And a spraying device 4 for ejecting the sprayed liquid.

A battery is used as the power supply 11 of the ultrasonic cosmetic device. The battery 11 and the ultrasonic generator 2
1 is separately provided outside the case 1 in this embodiment.

The casing 1 is made of plastic and is formed in a hand-held type having a length of, for example, 180 mm and a thickness of about 40 to 50 mm.

The ultrasonic head 22 is exposed slightly forward on the lower surface of the case 1. The ultrasonic head 22 has an ultrasonic element 23 and a diaphragm 24,
The ultrasonic waves generated by the ultrasonic generator 21 are transmitted to the ultrasonic element 23.
Is output from the diaphragm 24 via the. The vibration plate 24 is a conductive metal plate,
Slightly projecting from the lower surface of. In addition, the ultrasonic head 2
Ultrasonic output from 2 has adjustable in the range of, for example, 0.5~3MH _Z.

The liquid container 3 contains a liquid W such as water or lotion, depending on the application, but a container having a relatively small capacity is employed. A stick-shaped liquid retaining material 31 such as felt or sponge is attached to the lid of the liquid container 3 over the inside and outside of the container. The liquid container 3 can be detachably set on the upper surface of the case 1 with the liquid retaining material 31 facing downward.

In this embodiment, the spraying device 4 employs a type in which a liquid is sprayed by ultrasonic waves. The ultrasonic spray device 4 includes a piezoelectric vibrator 41 and a vibration plate 42 vibrated by the piezoelectric vibrator 41. A current from the battery 11 is supplied to the piezoelectric vibrator 41 via the current adjusting dial 13, and when the piezoelectric vibrator 41 is excited, the diaphragm 42 vibrates. The diaphragm 42 is in contact with the lower end of the liquid retaining material 31 of the liquid container 3 and receives the liquid W in the liquid container 3 via the liquid retaining material 31. The vibration plate 42 is extremely thin (for example, a thickness of 0.1 to
0.05 mm) and an appropriate area (for example, 20 mm × 20 mm). The diaphragm 42 has a large number of minute holes. Each of these micro holes is, for example, at the entrance side (top side).
Has a diameter of 0.1 mm and a diameter on the outlet side of about 0.02 mm is tapered, and if the liquid is simply attached to the upper surface of the diaphragm 42, the liquid may pass through the fine holes. Absent.

A spray switch 1 is provided on the side of the case 1.
6 are provided. When the spray switch 16 is pressed, the piezoelectric vibrator 41 is excited to vibrate the vibrating plate 42, and the liquid adhering to the upper surface side of the vibrating plate 42 passes through each minute hole of the vibrating plate 42, The liquid is ejected from the lower surface in a mist (reference F in FIG. 3). The mist particles passing through the minute holes of the diaphragm have a minute particle size of about 50 μm. The spray port 43 of the spray device 4 is
At a position close to the front of the ultrasonic head 22 on the lower surface side of the head.

In the ultrasonic cosmetic device, one of the two electrode terminals 51 connected to the DC power supply (battery) 11 is connected to the diaphragm 24 of the ultrasonic head, while the other electrode terminal 51 is connected to the other. Are connected to an electrode plate 53 which is mounted at an appropriate position on the outer surface of the casing 1. The electrode plate 53
It is attached to the upper surface of the body case 1 so that the hand comes into contact when the body case 1 is gripped.

Each of the electrode terminals 51, 5 in this embodiment
No. 2 has a cleansing function for removing dirt in pores of the skin and an iontophoretic function for enabling the active ingredient in the lotion to be pushed into the true layer of the skin while being ionized. Further, on the upper surface of the casing 1, there are provided changeover switches (cleansing switch 14, ion introduction switch 15) for mutually changing the polarities of the electrode terminals 51, 52. When the cleansing switch 14 is turned on, the ultrasonic head 22
The electrode terminal 51 on the diaphragm 24 side has a negative polarity and the electrode terminal 52 on the electrode plate 53 side has a positive polarity.
5 is turned on, the electrode terminal 51 on the diaphragm 24 side
The electrode terminal 52 on the electrode plate 53 side is set to be a negative pole. When the electrode terminals 51 and 52 have polarities, the diaphragm 24 and the electrode plate 53 to which the electrode terminals are connected also have polarities.

By the way, the dirt entering the pores of the skin is positive ions, and if the polarity on the diaphragm 24 side is negative,
The dirt is sucked toward the diaphragm 24 by the electric suction action. On the other hand, the active ingredient of the lotion may be a positive ion or a negative ion (in general, the positive ion is more).
When the lotion active ingredient is + ion, the ion introduction switch 15 is set to 0N (the diaphragm 24 becomes + pole), and when the lotion active ingredient is-ion, the cleansing switch 14 is turned on. (The diaphragm 24 becomes a negative pole). Then, the ion polarity of the lotion active ingredient and the polarity of the diaphragm 24 become the same, and the ionized lotion active ingredient is pushed into the skin by the electric repulsion.

The ultrasonic cosmetic device according to the first embodiment is used as follows. First, when performing only the ultrasonic massage, the liquid W is stored in the liquid container 3, and the liquid container 3 is set in the case 1. At this time, the liquid container 3
Of the liquid retaining material 31 comes into contact with the upper surface of the vibration plate 42 of the spray device 4, and the liquid W in the liquid container 3 reaches the upper surface of the vibration plate 42 via the liquid retaining material 31. When only ultrasonic massage is performed, water having the best ultrasonic wave transmission may be used as the liquid W stored in the liquid container 3. Then, the user holds the body case 1 and turns on the spray switch 16 with the spray port 43 close to the skin surface A at the position where he / she wants to be beautyd as shown in FIG. Then, the piezoelectric vibrator 4 of the spray device 4
1 is excited, the diaphragm 42 vibrates, and the liquid
The mist is ejected from the spray port 43 in the form of a mist (symbol F) through a large number of micro holes 2 and the mist particles adhere to the skin surface A.
Since the mist particles are extremely minute (for example, about 50 μm), the liquid does not flow unless a large amount of the mist is sprayed in one place. Then, with the ultrasonic head 22 being in contact with the skin surface A to which the liquid is attached in the form of a mist, the ultrasonic generator 21
Is operated, ultrasonic waves are output from the ultrasonic head 22. At this time, since the liquid is interposed between the ultrasonic head (diaphragm 24) and the skin surface A in the form of a film, the transmission efficiency of the ultrasonic wave to the skin is improved, and the massage action on the skin is performed well. . In this massaging operation, the ultrasonic generator 21 is operated while the liquid is sprayed by the spraying device 4 (the ultrasonic wave is output from the ultrasonic head 22), and the case 1 is sequentially moved forward. In addition, mist adhesion work and massage work can be performed at the same time.

As described above, in this ultrasonic cosmetic device, since the ultrasonic head 22, the liquid container 3, and the spray device 4 are assembled in the body case 1, the operation of applying the liquid to the skin surface A can be performed. The ultrasonic massage operation can be performed with a single device, and the usability is improved.

When using the ultrasonic cosmetic device of this embodiment to cleanse the skin, the cleansing switch 1
When 4 is turned on, the diaphragm 24 of the ultrasonic head 22 becomes a negative pole. Then, in this state, the ultrasonic head 22 is
Then, the dirt (+ pole) in the pores is drawn toward the ultrasonic head (diaphragm 24) by an electric suction action and is removed from the pores. At this time, if the operation is performed in a state where the ultrasonic generator 21 is operated, the dirt removing action is further improved.

In order to ion-introduce the active ingredient of the lotion, the lotion W is contained in the liquid container 3, and the lotion is applied to the skin A in the form of a mist by the spray device 4. And according to the ionic polarity (often + polarity) of the active ingredient of lotion,
For example, the ion introduction switch 15 is turned on (the vibration plate 24 on the ultrasonic head side becomes a positive pole), the body case 1 is gripped (the hand is brought into contact with the electrode plate 53), and the ultrasonic head 22 is moved to the skin surface A. , Direct current flows through the human body. At this time, since the diaphragm 24 of the ultrasonic head 22 has the same polarity (positive pole) as the active ingredient, the ionized active ingredient is pushed into the skin by the electric repulsion. When the lotion active ingredient has negative polarity, the cleaning is performed with the cleansing switch 14 turned ON. Also, this ion introduction may be performed while operating the ultrasonic generator 21.

As described above, the ultrasonic cosmetic device of this embodiment has a cleansing function and an iontophoretic function in addition to the massage function by the ultrasonic head 22.
One device can select a multi-functional usage mode.

The second embodiment shown in FIG. 4 is directed to a high-frequency cosmetic device. In the case of FIG. 4, a high frequency generator 61 is used instead of the ultrasonic generator 21 of the embodiment of FIGS. 1 to 3, and a high frequency head 62 is used instead of the ultrasonic head 22. The high-frequency head 62 includes a high-frequency element 63
And a high-frequency generating plate 64. The other configuration in the embodiment of FIG. 4 is the same as that of the embodiment of FIGS.

This high-frequency beauty device can warm the inside of the skin by bringing the high-frequency head 62 into contact with the skin surface A and outputting high frequency from the high-frequency head 62. In the case of this high-frequency beauty device, In order to efficiently transmit the high frequency output from the high frequency head 62 to the skin side, the presence of moisture is necessary. And also in this high frequency beauty device, since the liquid container 3 and the spraying device 4 are assembled in the body case 1,
The function of applying water in the form of a mist and the heating function of the high-frequency head 62 can be achieved with a single device. This high-frequency cosmetic device also has a cleansing function and an iontophoretic function for the skin, as in the embodiment of FIGS. Alternatively, ion introduction can be performed.

[0035]

The ultrasonic cosmetic device and the high-frequency cosmetic device of the present invention have the following effects. Effect of the Invention of Claim 1 of the Present Application The ultrasonic cosmetic device of claim 1 of the present application contains an ultrasonic head 2 for outputting ultrasonic waves generated by the ultrasonic generator 21 and a liquid W in a body case 1. A liquid container 3 and a spray device 4 for ejecting the liquid W in the liquid container 3 in a mist state are provided. As the spray device 4, a vibrating plate 42 having a large number of fine holes is vibrated by a piezoelectric vibrator 41. The present invention is characterized in that an ultrasonic spray device is used.

Therefore, in the ultrasonic cosmetic device according to the first aspect, the liquid container 3 which has been conventionally a separate body can be integrated into the body case 1, and can be compactly stored at the time of storage, for example, and the ultrasonic cosmetic device can be used. Since the work can be performed with a single device, the convenience is improved. Further, since the liquid in the liquid container 3 can be sprayed in the form of a mist from a number of minute holes of the diaphragm 42 by the ultrasonic spray device 4, moisture can be uniformly and finely adhered to the skin surface. There is also an effect that it is difficult for the moisture attached to the surface to flow. According to the second aspect of the present invention, in the ultrasonic cosmetic device according to the first aspect, one of the two electrode terminals 51 connected to the DC power supply 11 is connected to the ultrasonic head. 22, while the other electrode terminal 52 is connected to an electrode plate 53 mounted at an appropriate position on the outer surface of the casing 1.

Therefore, in the ultrasonic cosmetic device according to the second aspect, in addition to the effect of the first aspect, by setting the ultrasonic head 22 to either the positive or negative polarity, the dirt in the pores of the skin can be electrically removed. There is an effect that the active ingredient of the lotion can be electrically sucked (cleansing function) or the active ingredient of the lotion can be electrically pushed into the skin (ion introduction function). Effect of the Invention of Claim 3 of the Invention The invention of claim 3 of the present invention is directed to a high-frequency head 62 that outputs the high frequency generated by the high-frequency generator 61 to the case 1
And a liquid container 3 containing the liquid W, and a spray device 4 for ejecting the liquid W in the liquid container 3 in a mist state.
The spraying device 4 is characterized in that an ultrasonic spraying device in which a vibration plate 42 having a large number of fine holes is vibrated by a piezoelectric vibrator 41 is used.

Therefore, in the high-frequency cosmetic device according to the third aspect, similarly to the first aspect, the liquid container 3 which has been conventionally a separate body can be integrated into the body case 1 and, for example, can be compacted during storage. It can be stored, and beauty work using high frequency can be performed with a single device, so that convenience is improved.
In addition, the liquid in the liquid container 3 can be sprayed in a mist form from a large number of fine holes of the vibration plate 42 by the ultrasonic spray device 4, so that water can be uniformly and finely adhered to the skin surface.
There is also an effect that the moisture attached to the skin surface becomes difficult to flow. Effect of the Invention of Claim 4 According to the invention of claim 4 of the present application, in the high-frequency beauty device of claim 3, one of the two electrode terminals 51 connected to the DC power supply 11 is connected to the high-frequency head 62. While being connected, the other electrode terminal 52 is connected to an electrode plate 53 attached to a proper position on the outer surface of the body case 1.

Therefore, in the high-frequency cosmetic device according to the fourth aspect, in addition to the effect of the third aspect, by setting the high-frequency head 62 to any of the positive and negative polarities, the same as in the second aspect above, This has the effect of electrically sucking dirt from the skin (cleansing function) and electrically pushing the active ingredient of the lotion into the skin (ion introduction function).

[Brief description of the drawings]

FIG. 1 is a side view of an ultrasonic cosmetic device according to an embodiment of the present application.

FIG. 2 is a plan view of the ultrasonic cosmetic device of FIG. 1;

FIG. 3 is a sectional view of the ultrasonic cosmetic device of FIG. 2 taken along the line III-III.

4 is a longitudinal sectional view of the high-frequency beauty device of the embodiment of the present application (FIG. 3)
FIG.

[Explanation of symbols]

1 is a body case, 3 is a liquid container, 4 is a spraying device, 11 is a power source (battery), 21 is an ultrasonic generator, 22 is an ultrasonic head, 41 is a piezoelectric vibrator, 42 is a vibrating plate, and 43 is a spray. mouth,
51 is an electrode terminal, 52 is an electrode terminal, 53 is an electrode plate, 61
Is a high frequency generator, and 62 is a high frequency head.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A61H 23/02 A61H 33/12

Claims (4)

(57) [Claims] An ultrasonic generator (2) is provided in a body case (1).
An ultrasonic head (2) for outputting the ultrasonic waves generated in 1)
And 2) a liquid (W) liquid container (3 containing a) spraying device for a liquid container (3) in the liquid (W) is ejected as a mist (4) and a Rutotomoni spray device ( 4) As a diaphragm with many micro holes
(42) is vibrated by the piezoelectric vibrator (41).
An ultrasonic cosmetic device using an ultrasonic spray device . 2. An ultrasonic head according to claim 1, wherein one of the two electrode terminals connected to the DC power supply is connected to the ultrasonic head. An ultrasonic cosmetic device characterized in that (52) is connected to an electrode plate (53) attached to an appropriate position on the outer surface of the case body (1). 3. A high frequency generator (6) is provided in the case (1).
High frequency head (6) for outputting the high frequency generated in 1)
And 2) a liquid (W) liquid container (3 containing a) spraying device for a liquid container (3) in the liquid (W) is ejected as a mist (4) and a Rutotomoni spray device ( 4) As a diaphragm with many micro holes
(42) is vibrated by the piezoelectric vibrator (41).
A high-frequency beauty device using an ultrasonic spray device . 4. An electrode terminal according to claim 3, wherein one of the two electrode terminals connected to the DC power supply is connected to the high-frequency head while the other electrode terminal is connected to the high-frequency head. 52) A high-frequency beauty device characterized in that the high-frequency beauty device is connected to the electrode plate (53) attached to an appropriate position on the outer surface of the body case (1).