JP2010012037A - Assembling method of body weight composition monitor and scale, and body weight composition monitor and scale - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an assembling method of a body weight composition monitor and scale having a superior assemblage; and the body weight composition monitor and scale. <P>SOLUTION: This assembling method of a body weight composition monitor and scale is provided with: a first step for connecting one ends of lead wires 5R, 5L, 6R and 6L for connecting electrodes to an electronic circuit board, to the electronic circuit board, connecting load sensors and the electronic circuit board with the lead wires and attaching them to a lower-side housing 1a; a second step for attaching an upper-side housing 1b to the lower-side housing 1a; a third step for pulling out the other ends of the lead wires 5R, 5L, 6R and 6L for connecting the electrodes to the electronic circuit board, from opening parts 18R, 18L, 19R and 19L provided in the upper-side housing 1a to the outside of the housing; and a fourth step for connecting the pulled-out other ends of the lead wires 5R, 5L, 6R and 6L to the electrodes and attaching the electrodes to the upper-side housing 1b. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for assembling a body weight / body composition meter and a body weight / body composition meter.

  In the conventional body composition monitor, electrodes for measuring the body impedance of the subject are placed on the load surface of the body housing on which the subject is placed, and a strain gauge or the like is provided on the legs that support the body housing. There is known one provided with a load sensor. This type of body composition monitor has a configuration in which an electrode and a load sensor are respectively connected to an electronic circuit board or the like housed in a main body housing via lead wires.

  With reference to FIG. 10, the housing structure of the conventional body composition monitor will be described. FIG. 10 is an exploded perspective view of a main body housing of a body weight composition meter according to a conventional example.

  The main body housing 100 includes a front housing 101 and a ground housing 102. The front housing 101 is a resin molded product, and an electrode (not shown) for measuring the body impedance of the subject is attached to the load surface 101a. Further, reinforcing ribs are provided on the lower surface of the front housing 101 on the inner side of the main body housing 100 in order to impart rigidity. The ground housing 102 is made of sheet metal, and strain gauges (not shown) as load sensors are attached to leg portions 102a provided at the four corners. Further, an electronic circuit board 103 connected to the upper surface of the ground housing 102 on the inner side of the main body housing 100 via a strain gauge and a lead wire (not shown) is attached.

  In assembling the main body housing 100, first, the electrodes are attached to the load surface 101 a of the front housing 101, and the strain gauge and the electronic circuit board 103 are connected by lead wires and positioned and fixed at a predetermined attachment location of the ground housing 102. Next, in a state where the front housing 101 and the ground housing 102 are separated, the electrodes and the electronic circuit board 103 are connected by the lead wires 104, and finally, the front housing 101 is attached so as to cover the ground housing 102.

  In the process of attaching the front housing 101 and the ground housing 102, the front housing 101 and the ground housing 102 are attached in a state where they are connected by the lead wire 104. Therefore, depending on the length of the lead wire 104, the degree of deflection, and the like, when the front housing 101 and the ground housing 102 are joined, the lead wire 104 may be caught in the joint surface. Such biting of the lead wire 104 deteriorates the workability of the assembling work and also deteriorates the yield in the factory.

  In order to prevent such a lead wire 104 from being caught, a configuration in which the lead wire 104 is not directly connected by a lead wire but is brought into contact by a leaf spring or the like is also conceivable. However, such a configuration is difficult to employ in a body weight / body composition meter as follows.

The impedance measurement electrode has a very weak signal to be detected, and needs to be amplified by an amplifier circuit such as an operational amplifier before being output to the control circuit. Therefore, conventionally, for example, a configuration in which accuracy is ensured by connecting a lead wire and an electrode or an electronic circuit board by a faston terminal to keep the contact resistance constant is generally adopted. . Therefore, if the connection is made by the leaf spring as described above, the contact resistance may change due to the force applied to the contact part when a load is applied, which has a great influence on the measurement accuracy. It is difficult to put it to practical use.

  In addition, for example, a method of inserting a lead wire inside the housing after assembling the housing and connecting the lead wire to the electronic circuit board requires a dedicated jig for connection, leading to an increase in cost. . Therefore, in the prior art, in order to connect the electronic circuit board disposed inside the housing and the electrode attached to the outer surface of the housing with the lead wire, as described above, the lead wire is connected to the electrode and the electronic circuit board in advance. In this state, the housing was assembled.

  An object of the present invention is to provide a method for assembling a weight and body composition meter and a weight and body composition meter excellent in assemblability.

In order to achieve the above object, a method for assembling a body weight / body composition meter according to the present invention comprises
An internal hollow housing is divided into a lower housing to which a load sensor for measuring the weight of the subject is attached and an upper housing to which an electrode is attached for measuring the body impedance of the subject. Have
An assembly method for a body composition monitor, wherein an electronic circuit board connected to the load sensor via a first lead wire and to the electrode via a second lead wire is disposed inside the housing. And
A first step of connecting one end of the second lead wire to the electronic circuit board and connecting the load sensor and the electronic circuit board to the lower housing by connecting the first lead wire;
A second step of attaching the upper housing to the lower housing;
A third step of drawing the other end of the second lead wire out of the housing through an opening provided in the upper housing;
A fourth step of connecting the other end of the drawn second lead wire to the electrode and attaching the electrode to the upper housing;
It is characterized by having.

  As described above, the electrode is connected to the second lead wire after the upper housing is attached to the lower housing, and is attached to the upper housing, so that the upper housing and the lower housing are attached when the upper housing is attached to the lower housing. Since the housing is not connected to the housing by the lead wire, it is possible to prevent the second lead wire connected to the electrode from being caught in the joint surface between the upper housing and the lower housing. That is, in the body composition monitor, in which it is preferable to directly connect the electrode and the electronic circuit board and the lead wire from the viewpoint of measurement accuracy, the electrode, the electronic circuit board and the Two lead wires can be connected.

  In the first step, the other end side of the second lead wire may be positioned at a position exposed to the outside of the housing through the opening in the lower housing.

  Thus, by positioning the other end side of the second lead wire with respect to the lower housing, it is possible to prevent the lead wire from interfering when the upper housing is attached to the lower housing, and the upper housing. The second lead wire can be easily pulled out from the opening after being attached to the lower housing.

The lower housing may have a locking portion that can lock the other end of the second lead wire at a position exposed to the outside of the housing through the opening.

  Thereby, the other end side of the second lead wire can be positioned by the locking portion.

In order to achieve the above object, the body composition monitor according to the present invention comprises:
An internal hollow housing is divided into a lower housing to which a load sensor for measuring the weight of the subject is attached and an upper housing to which an electrode is attached for measuring the body impedance of the subject. Have
A body composition meter in which an electronic circuit board connected to the load sensor via a first lead wire and connected to the electrode via a second lead wire is disposed inside the housing,
The upper housing has an opening for drawing the second lead wire out of the housing;
The electrode is connected to the second lead wire drawn out to the outside through the opening after the upper housing and the lower housing are joined, and is attached to the upper housing. .

  As described above, the electrode is connected to the second lead wire after the upper housing is attached to the lower housing, and is attached to the upper housing, so that the upper housing and the lower housing are attached when the upper housing is attached to the lower housing. Since the housing is not connected to the housing by the lead wire, it is possible to prevent the second lead wire connected to the electrode from being caught in the joint surface between the upper housing and the lower housing. That is, in the body composition monitor, in which it is preferable to directly connect the electrode and the electronic circuit board and the lead wire from the viewpoint of measurement accuracy, the electrode, the electronic circuit board and the Two lead wires can be connected.

  Prior to joining the upper housing and the lower housing, the other end side of the second lead wire can be positioned at a position exposed to the outside of the housing through the opening in the lower housing. Means may be further provided.

  Thus, by positioning the other end side of the second lead wire with respect to the lower housing, it is possible to prevent the lead wire from interfering when the upper housing is attached to the lower housing, and the upper housing. The second lead wire can be easily pulled out from the opening after being attached to the lower housing.

  The positioning means may be a locking portion that is provided at a position exposed to the outside of the housing through the opening in the lower housing and can lock the other end side of the second lead wire.

  Thereby, the other end side of the second lead wire can be positioned by the locking portion.

The distance from one end of the electrode mounting portion in the upper housing to the location where the lead wire is drawn to the outside in the opening is a,
The distance from the end of the electrode corresponding to the one end of the mounting portion to the location where the lead wire is connected is b,
The length from the end of the lead wire visible from the opening to the end connected to the electrode when the lead wire is pulled out and extended from the opening is c,
The distance from the end of the electrode in the direction in which the lead wire is extended to the connecting portion of the lead wire is d,
E, the distance between the upper housing and the electrode formed when the electrode is installed at the connection work position with the lead wire;
The length between the end of the attachment portion and the end of the upper housing in the direction in which the lead wire is extended when performing the connection work is f,
Α is the length of the lead wire margin
If
c = b−a + α
c−α = d × 2 + e + f
Satisfy the relationship.

  This makes it possible to obtain a sufficient lead length for connecting the lead wire and the electrode, and the lead wire is not drawn longer than necessary, and the lead wire is attached when the electrode is attached to the upper housing. It can be stored without interfering with the work or being caught between the electrode and the mounting portion.

  As described above, according to the present invention, it is possible to make the assembly excellent.

  The best mode for carrying out the present invention will be exemplarily described in detail below with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention only to those unless otherwise specified. .

(Example)
With reference to FIGS. 1-9, the weight body composition meter which concerns on the Example of this invention is demonstrated. FIG. 1 is a schematic diagram showing a schematic configuration of the whole body composition monitor. FIG. 2 is a schematic diagram showing a use state of the body weight / body composition meter. FIG. 3 is a block diagram showing a control configuration of the body weight / body composition meter. FIG. 4 is a schematic perspective view of the body composition monitor main body. FIG. 5 is a perspective view showing a state in which the lead wire is positioned in the lower housing. FIG. 6 is a perspective view showing a state in which the upper housing is attached to the lower housing. FIG. 7 is a perspective view showing a state in which the lead wire is pulled out from the slit (opening) of the upper housing. FIG. 8 is a partially enlarged perspective view showing a state in which the drawn lead wire is connected to the electrode. FIG. 9 is a perspective view showing a state in which the electrode to which the lead wire is connected is attached to the load surface of the upper housing.

<Configuration of body weight composition meter>
With reference mainly to FIG.1 and FIG.2, the schematic structure of the whole body weight composition meter is demonstrated.

  As shown in FIG. 1, the body weight / body composition meter is roughly composed of a main body 1 and a holding unit (display operation unit) 2. The main body 1 and the holding unit 2 are connected by a cable (not shown) and can transmit and receive signals. In addition, the structure which connects the main body 1 and the holding | maintenance part 2 by radio | wireless communication may be sufficient. FIG. 1 shows a non-use state in which the holding unit 2 and the cable are stored in the holding unit storage unit 14 of the main body 1.

  Four foot electrodes 10L, 10R, 11L, and 11R are provided on the upper surface (load surface) of the main body 1. The electrodes 10L and 10R are electrodes for applying a current to the left and right soles, and the electrodes 11L and 11R are electrodes for detecting a voltage from the left and right soles.

Legs 12a, 12b, 12c, and 12d that support the main body 1 in contact with the floor surface are provided at the four corners of the lower surface of the main body 1. Inside these leg portions 12a, 12b, 12c, and 12d, strain gauges 13a, 13b, 13c, and 13d are provided as load sensors for measuring body weight.

  The holding unit 2 is provided with left and right grips 20L and 20R, a display unit 21, an operation unit 22, and the like. The display unit 21 is a part that displays measurement results, guidance, and the like, and is configured by, for example, a liquid crystal display. The operation unit 22 includes a user interface for inputting user information such as age, sex, and height, selecting a registration number (user), and inputting other information. The display unit 21 and the operation unit 22 may be configured by common hardware using a touch panel display.

  The grips 20L and 20R are provided with electrodes 24L and 24R for applying a current to the palm and electrodes 25L and 25R for detecting a voltage from the palm, respectively.

  As shown in FIG. 2, the body weight / body composition meter configured as described above has the subject put the left foot on the electrodes 10 </ b> L and 11 </ b> L on the upper surface of the main body 1 and the right foot on the electrodes 10 </ b> R and 11 </ b> R. 2. Hold the electrodes 24L, 25L of the left grip 20L with the left hand, hold the electrodes 24R, 25R of the right grip 20R with the right hand, extend the arm horizontally, and hold the holding portion 2 at substantially the same height as the shoulder. Used by.

  The control configuration of the body weight / body composition meter will be described mainly with reference to FIG.

  As shown in FIG. 3, the holding unit 2 includes a control unit 26, an impedance measurement unit 27 as a means for measuring body composition, a storage unit 28, a power source 29, and the like. Further, the main body 1 incorporates a weight measuring unit 19a as means for measuring the body weight to which the load sensor is connected, an impedance interface 19b to which the foot electrode is connected, and the like. The weight measuring unit 19a and the impedance interface 19b are provided on the electronic circuit board 19.

  The control unit 26 includes a CPU (arithmetic processing unit), a memory, and the like. When the CPU executes a program, the weight and impedance measurement values and the user's body identification information read from the storage unit 28 are read. Is configured to perform various processes such as estimation of various body composition components (body fat, visceral fat, etc.) and determination of the degree of change in body composition value, and display the processing results on the display unit 21. Has been. However, some or all of the functions performed by the control unit 26 may be configured by a dedicated chip.

  The body weight measurement unit 23 is a means for measuring the body weight of the subject by detecting changes in resistance values detected by the strain gauges 13a, 13b, 13c, and 13d.

  The impedance measuring unit 27 applies a predetermined current to the living body from the foot electrodes 10L and 10R and the hand electrodes 24L and 24R according to the control of the control unit 26, and the foot electrodes 11L and 11R and the hand electrodes 25L and 25R. It is a means for measuring impedance in the body by detecting voltage.

  The storage unit 28 includes a storage medium such as a nonvolatile memory. In the storage unit 28, the control unit 26 stores the measurement results (measurement values) of the body weight and the body composition in time series for each user (by registration number). The storage unit 28 also stores body specifying information (gender, age, height) of each user. In the body composition monitor according to the present embodiment, a plurality of (for example, four) users can be registered, and the user can be selected by designating a registration number on the operation unit 22.

Specific processing flow when measuring body weight and body composition, weight measurement unit 23, control unit 26
The specific processing contents of the impedance measuring unit 27 and the like can be appropriately adopted as well-known methods, and thus description thereof is omitted here.

<The structure of the body composition monitor body>
The configuration of the main body 1 will be described mainly with reference to FIGS.

  As shown in FIG. 4, the main body 1 is generally composed of a lower housing 1a and an upper housing 1b. Both the lower housing 1a and the upper housing 1b are resin molded products. Examples of the resin material include ABS resin and polycarbonate.

  As shown in FIG. 5, the lower housing 1a has an open upper surface, and leg portions 12a, 12b, 12c, and 12d are provided at four corners of the lower surface. Further, strain gauges 13a, 13b, 13c, and 13d as load sensors are attached to the insides of the leg portions of the lower housing 1a.

  The lower housing 1a includes a reinforcing structure having rigidity necessary to support the weight of the subject. Specifically, a plurality of reinforcing ribs 15 extending in a lattice shape are provided inside the lower housing 1a to enhance rigidity.

  Each of the reinforcing ribs 15 has a protrusion that rises perpendicularly from the upper surface of the bottom of the lower housing 1a continuously between opposing side wall surfaces inside the lower housing 1a, that is, an internal space of the lower housing 1a. It has the shape like the wall which partitions off. The plurality of reinforcing ribs 15 extend in parallel in the horizontal direction and in the horizontal direction in the lower housing 1a so as to divide the inside of the lower housing 1a into a plurality of small spaces. It has a structure in which things cross each other. In addition, various structures are conventionally known for reinforcing structures that increase rigidity by such reinforcing ribs. In the present embodiment, the plurality of reinforcing ribs intersect each other at right angles so that the internal space has a substantially rectangular shape. However, for example, a configuration having a triangular shape or a honeycomb shape may be used.

  Each reinforcing rib 15 is configured such that the upper surface thereof abuts the lower surface of the upper housing 1b to support the upper housing 1b from below. The number, interval, thickness, and the like of the reinforcing ribs 15 are appropriately set based on specifications such as the shape and dimensions of the lower housing 1a. In addition, the reinforcing ribs 15 are provided at substantially the same height as a whole, but the height is partially lowered at the portion where the accommodating portion 15a of the electronic circuit board 19 and the lead wire are wired. .

  The housing portion 15a of the electronic circuit board 19 of the present embodiment is formed by partially reducing the height of the reinforcing rib 15 or by making a shape with a part cut away. The method of accommodating the board | substrate 19 is not restricted to this, The method of inserting and accommodating in the clearance gap between the adjacent reinforcement ribs 15 may be sufficient if it is possible on a design dimension.

  The electronic circuit board 19 is connected to the foot electrodes 10L, 10R, 11L, 11R and the strain gauges 13a, 13b, 13c, 13d through lead wires. As shown in FIG. 3, the electronic circuit board 19 is connected to the electronic circuit board accommodated in the holding unit 2 via the cable 3, and is held by the impedance interface 27a and the weight measuring unit 19a. An amplifier circuit such as an operational amplifier that amplifies and outputs input signals from the electrodes and the strain gauge to the control circuit (control unit 26) and the impedance measurement circuit (impedance measurement unit 27) provided on the substrate of the unit 2 is formed Has been. The configuration of the amplifier circuit, the impedance interface 19b, the weight measuring unit 19a, and the like are known techniques, and a detailed description thereof will be omitted.

  Lead wires connecting the respective foot electrodes 10L, 10R, 11L, 11R and the strain gauges 13a, 13b, 13c, 13d and the electronic circuit board 19 are formed between the reinforcing ribs 15 and a part of the reinforcing ribs 15. It extends so as to sew a notch or the like for wiring provided in.

  The upper housing 1b is a plate-like member having a planar shape corresponding to the upper surface of the opened lower housing 1a. The upper surface of the upper housing 1 b is a load surface on which the subject is placed, and the lower surface is supported by the reinforcing rib 15.

  Further, as shown in FIG. 6, the upper housing 1b has slits (openings) 18L penetrating vertically in attachment portions 16L, 16R, 17L, and 17R to which the electrodes 10L, 10R, 11L, and 11R are attached. 18R, 19L, and 19R are provided. The slits 18L, 18R, 19L, and 19R are openings for pulling out the other ends of the lead wires 5L, 5R, 6L, and 6R soldered to the foot electrodes 10L, 10R, 11L, and 11R to the outside of the housing. The size and shape of the slits 18L, 18R, 19L, 19R are not particularly limited, but the lead wires 5L, 5R, 6L, 6R can be easily pulled out from the outside, and the foot electrodes 10L, 10R, 11L , 11R, the lead wires 5L, 5R, 6L, 6R are bitten between the foot electrodes 10L, 10R, 11L, 11R and the upper housing 1b (mounting portions 16L, 16R, 17L, 17R). It is provided in a size and shape that can be easily housed inside the housing.

In the present embodiment, as shown in FIG. 7, the positions of soldering of the foot electrodes 10L, 10R, 11L, 11R, the sizes and positions of the slits 18L, 18R, 19L, 19R, the lead wires 5L, 5R, 6L, 6R Are set so that a relationship satisfying the following two formulas (Formula 1 and Formula 2) is established.
Formula 1: c = b−a + α
Formula 2: c−α = d × 2 + e + f
Here, a to f and α are as follows. Here, only the dimensional relationship in the foot electrode 10R will be described as a representative. The other foot electrodes 10L, 11L, and 11R are set in the same manner, and the description thereof is omitted.
a: Distance from the end of the mounting portion 16R to the location where the lead wire 5R is drawn to the outside in the slit 18R.
b: Distance from the end portion of the foot electrode 10R corresponding to the end portion of the attachment portion 16R to the location where the lead wire 5R is soldered.
c: The length from the end of the lead wire visible from the opening to the end connected to the electrode when the lead wire 5R is pulled out from the slit 18R and extended.
d: Distance from the end portion of the foot electrode 10R to the soldered portion of the lead wire 5R in the direction in which the lead wire 5R is extended.
e: Distance between the housing (upper housing 1b) and the foot electrode 10R formed when the soldering operation is performed (when the foot electrode 10R is installed at the work position).
f: The length between the end of the attachment portion 16R and the end of the upper housing 1b in the direction in which the lead wire 5R is extended when performing the soldering operation.
α: Length of margin of lead wire 5R.

  By setting various dimensions to satisfy the above relationship, it is possible to obtain a sufficient lead length for soldering work between the lead wire and the foot electrode, and the lead wire is drawn longer than necessary. Therefore, when the soldered electrode is attached to the housing, the lead wire can be stored without interfering with the attaching operation or being caught between the electrode and the attaching portion.

<Main body housing assembly process>
The assembly process of the main body 1 will be described mainly with reference to FIGS.

  As shown in FIG. 5, first, the electronic circuit board 19 and the strain gauges 13a, 13b, 13c, and 13d are attached to the lower housing 1a by wiring. That is, the electronic circuit board 19 is attached to the accommodating portion 15a provided in the reinforcing rib 15, and the strain gauges 13a, 13b, 13c, and 13d are attached to the leg portions on the lower surface of the lower housing 1a. The electronic circuit board 19 and the strain gauges 13a, 13b, 13c, and 13d are connected by lead wires (not shown).

  Next, one end of each of the lead wires 5L, 5R, 6L, 6R for connecting the respective foot electrodes 10L, 10R, 11L, 11R and the electronic circuit board 19 is connected to the electronic circuit board 19, and Positioned on the side housing 1a. The lead wires 5L, 5R, 6L, and 6R are wired through the gaps between the reinforcing ribs 15 and the wiring cutouts 15b provided at the upper portions of the reinforcing ribs 15 or partially reduced heights 15c. The other end side to be connected to the foot electrodes 10L, 10R, 11L, and 11R in the lead wires 5L, 5R, 6L, and 6R is locked by being hooked by the notch 15d. The position where the notch 15d as the positioning means (locking portion) is provided is exposed to the outside through the slits 18L, 18R, 19L, 19R when the upper housing 1b is attached to the lower housing 1a ( It can be seen from the outside).

  Next, as shown in FIG. 6, the upper housing 1b is attached so as to cover the upper surface of the lower housing 1a. As described above, the other ends of the lead wires 5L, 5R, 6L, and 6R are locked to the notches 15d and positioned to be exposed to the outside through the slits 18L, 18R, 19L, and 19R. It is in a state.

  Next, as shown in FIG. 7, the other ends of the lead wires 5L, 5R, 6L, and 6R are pulled out of the housing through slits 18L, 18R, 19L, and 19R provided in the upper housing 1b. As shown in an enlarged view in FIG. 8, the slits 18L, 18R, 19L, and 19R have a shape in which the opening width increases along the extending direction of the lead wires 5L, 5R, 6L, and 6R. Easily pull out 5L, 5R, 6L, and 6R, and unlock the notch portion 15d that locks the other end side (the tip side connected to the electrode) of the lead wires 5L, 5R, 6L, and 6R. Thus, the length necessary for the connection work to the foot electrodes 10L, 10R, 11L, and 11R can be secured.

Next, the other ends of the lead wires 5L, 5R, 6L, and 6R are soldered to the electrodes 10L, 10R, 11L, and 11R, respectively. Finally, as shown in FIG. 9, the electrodes 10L, 10R, 11L, and 11R have the mounting surfaces 16L, 16R, and 17L of the upper housing 1b with the surface to which the lead wires 5L, 5R, 6L, and 6R are soldered as the lower surface. , 17R, for example, with a double-sided tape or the like.
<Excellent points of this embodiment>
According to this embodiment, after the upper housing is attached to the lower housing, the electrode is connected to the lead wire and attached to the upper housing, so that the upper housing is lowered like the conventional body composition analyzer. When attached to the side housing, the upper housing and the lower housing are not connected by the lead wires. Therefore, it is possible to prevent the lead wire connected to the electrode from being caught in the joint surface between the upper housing and the lower housing. That is, from the viewpoint of measurement accuracy, it is preferable that the electrode and the electronic circuit board and the lead wire are directly connected. In the body composition meter, the lead and the electronic circuit board A lead wire can be connected.

In addition, since the portion of the lead wire that is led out from the slit (opening) to the outside of the housing is positioned by the engaging portion at a position exposed to the outside through the slit, the lead wire is attached when the upper housing is attached to the lower housing. In addition to being prevented from interfering, it is easy to pull out the lead wire from the opening after the upper housing is attached to the lower housing.

  Therefore, the assemblability of the body weight / body composition meter can be improved.

  The above embodiment is merely an example of the present invention. The scope of the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the technical idea.

  For example, in the above embodiment, the type of body composition monitor has been described as having a configuration in which the main body and the holding section are separated, but the present invention is not limited to this, and a control section, a display section, etc. are provided on the main body side. The present invention can be applied to various known configurations such as a configuration in which impedance measurement is performed using only the foot electrodes and the holding unit is eliminated. Further, the arrangement of electrodes, load sensors, and the like is not limited to the configuration of the above embodiment, and can be changed as appropriate.

  The apparatus to which the present invention can be applied is not limited to a body weight / body composition meter. That is, one of two or more types of sensors is attached to one divided housing, and the other sensors are attached to the other housing, and each sensor must be directly connected to one control circuit by a lead wire. The present invention can be suitably applied to those having such a configuration.

It is a schematic diagram which shows schematic structure of the whole body weight composition meter. It is a schematic diagram which shows the use condition of a body weight body composition meter. It is a block diagram which shows the control structure of a body weight body composition meter. It is a typical perspective view of a body composition monitor main body. It is a perspective view which shows the state which positioned the lead wire in the lower housing. It is a perspective view which shows the state which attached the upper housing to the lower housing. It is a perspective view which shows the state which pulled out the lead wire from the slit (opening part) of an upper housing. It is a partially expanded perspective view which shows a mode that the lead wire with which it pulled out was connected to the electrode. It is a perspective view which shows the state which attached the electrode to which the lead wire was connected to the to-be-loaded surface of the upper housing. It is a disassembled perspective view of the main body housing of the body weight composition meter which concerns on a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 1a Lower housing 1b Upper housing 10L, 10R, 11L, 11R Foot electrodes 12a, 12b, 12c, 12d Leg portions 13a, 13b, 13c, 13d Strain gauge 14 Holding portion receiving portion 15 Reinforcing rib 15a Housing portion 15b Cutting Notch portion 15c Lower height portion 15d Notch portion 16L, 16R, 17L, 17R Mounting portion 18L, 18R, 19L, 19R Slit (opening)
DESCRIPTION OF SYMBOLS 19 Electronic circuit board 19a Weight measurement part 19b Impedance interface 2 Holding part 20L, 20R Grip 21 Display part 22 Operation part 24L, 24R Hand electrode 25L, 25R Hand electrode 26 Control part 27 Impedance measurement part 28 Memory | storage part 29 Power supply 3 Cable 5L, 5R, 6L, 6R Lead wire

Claims (7)

An internal hollow housing is divided into a lower housing to which a load sensor for measuring the weight of the subject is attached and an upper housing to which an electrode is attached for measuring the body impedance of the subject. Have
An assembly method for a body composition monitor, wherein an electronic circuit board connected to the load sensor via a first lead wire and to the electrode via a second lead wire is disposed inside the housing. And
A first step of connecting one end of the second lead wire to the electronic circuit board and connecting the load sensor and the electronic circuit board to the lower housing by connecting the first lead wire;
A second step of attaching the upper housing to the lower housing;
A third step of drawing the other end of the second lead wire out of the housing through an opening provided in the upper housing;
A fourth step of connecting the other end of the drawn second lead wire to the electrode and attaching the electrode to the upper housing;
A method for assembling a body weight / body composition meter.   2. The body weight according to claim 1, wherein in the first step, the other end side of the second lead wire is positioned at a position exposed to the outside of the housing through the opening in the lower housing. Assembling method of composition meter.   2. The locking portion capable of locking the other end side of the second lead wire at a position exposed to the outside of the housing through the opening in the lower housing. 3. An assembly method of the body weight / body composition meter according to 2. An internal hollow housing is divided into a lower housing to which a load sensor for measuring the weight of the subject is attached and an upper housing to which an electrode is attached for measuring the body impedance of the subject. Have
A body composition meter in which an electronic circuit board connected to the load sensor via a first lead wire and connected to the electrode via a second lead wire is disposed inside the housing,
The upper housing has an opening for drawing the second lead wire out of the housing;
The electrode is connected to the second lead wire drawn out to the outside through the opening after the upper housing and the lower housing are joined, and is attached to the upper housing. Body composition monitor.   Prior to joining the upper housing and the lower housing, the other end side of the second lead wire can be positioned at a position exposed to the outside of the housing through the opening in the lower housing. The body composition monitor according to claim 4, further comprising means.   The positioning means is a locking portion provided at a position exposed to the outside of the housing through the opening in the lower housing and capable of locking the other end side of the second lead wire. The body weight / body composition meter according to claim 5. The distance from one end of the electrode mounting portion in the upper housing to the location where the lead wire is drawn to the outside in the opening is a,
The distance from the end of the electrode corresponding to the one end of the mounting portion to the location where the lead wire is connected is b,
The length from the end of the lead wire visible from the opening to the end connected to the electrode when the lead wire is pulled out and extended from the opening is c,
The distance from the end of the electrode in the direction in which the lead wire is extended to the connecting portion of the lead wire is d,
E, the distance between the upper housing and the electrode formed when the electrode is installed at the connection work position with the lead wire;
The length between the end of the attachment portion and the end of the upper housing in the direction in which the lead wire is extended when performing the connection work is f,
Α is the length of the lead wire margin
If
c = b−a + α
c−α = d × 2 + e + f
The body weight / body composition meter according to claim 4, wherein the relationship is satisfied.

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