WO2014077053A1

WO2014077053A1 - Ic-tagged filter and ic tag for filter

Info

Publication number: WO2014077053A1
Application number: PCT/JP2013/077323
Authority: WO
Inventors: 康裕川元
Original assignee: 株式会社小松製作所
Priority date: 2012-11-19
Filing date: 2013-10-08
Publication date: 2014-05-22
Also published as: JP5607132B2; JP2014100646A

Abstract

An IC-tagged filter (20) used as a fuel filter or an oil filter in a hydraulic shovel or the like. This filter (20) has a metal exterior case (21) formed in a cylindrical shape, and has an IC tag (30) affixed to the external peripheral surface (23) of the exterior case (21). The IC tag (30) has an IC chip and an antenna. The IC tag (30) is disposed on the external peripheral surface (23) of the exterior case (21) on 1/2 or more of the area in the peripheral direction thereof.

Description

Filter with IC tag and IC tag for filter

The present invention relates to a filter with an IC tag and an IC tag for a filter attached to the filter.

As construction machines, for example, various construction machines such as hydraulic excavators and wheel loaders, and transport vehicles such as dump trucks are known. In construction machines, IC chips are embedded in replacement parts such as engine oil elements, return filters, pilot filters, air conditioner filters, etc., the information is detected by a reader / writer, the filter installation time is stored in the construction machine controller, and the filter A technique for displaying the next replacement time on a monitor is known (see, for example, Patent Document 1).

JP 2005-273196 A

By the way, the filter has a structure that can be screwed into a filter holding part (hereinafter referred to as a filter head) for an operator to fix the filter manually. The position varies and the relative position of the IC tag with respect to the reader / writer (read / write device) or the reader (reader) varies. Therefore, in such a filter mounting operation, for example, if the filter mounting operation is managed so that the screwing amount does not vary by specifying the number of rotations and torque of the filter during screwing, for example, However, even if the mounting operation is performed, the relative position is less likely to vary.
However, it is cumbersome to determine and manage such work management, and it is necessary to educate workers to correctly execute such work management. In addition, in order to prevent the relative position from varying, a positioning tool is prepared in the process of attaching the IC tag to the filter so that the attachment position of the IC tag to the filter is a predetermined position. It is necessary to manage the work of the process. In particular, in the case of a cylindrical filter, the mounting position of the filter varies depending on the screwing amount, and it is assumed that the IC tag does not face the reader / writer (read / write device) or the reader (reader). It is necessary to consider in what position it should be attached. Therefore, conventionally, a reader / writer (read / write device) or a reader (reader) installed in a construction machine may not be able to reliably read information from an IC tag or write information to an IC tag. There is a problem.

An object of the present invention is to provide a filter with an IC tag that allows a reader / writer (read / write device) or a reader (reader) to reliably communicate with an IC tag, and an IC tag for a filter used in this filter.

A filter with an IC tag according to a first aspect of the invention is a filter with an IC tag having an outer case made of metal and formed in a cylindrical shape, and an IC tag attached to an outer peripheral surface of the outer case, The IC tag has an IC chip and an antenna, and the IC tag is arranged in a region of 1/2 or more in the circumferential direction on the outer peripheral surface of the exterior case.

A filter with an IC tag according to a second invention is the filter according to the first invention, wherein the IC tag is disposed via an inlay having an IC chip and a main antenna, and a gap that can be electromagnetically coupled to the main antenna. It is characterized by comprising two sub-antennas.

A filter with an IC tag according to a third invention is the filter according to the second invention, wherein a spacer made of a dielectric is disposed between the sub antenna and the outer peripheral surface of the outer case, and the antenna length of the sub antenna is determined by the reading device. Alternatively, it is characterized in that the length is ½ of the wavelength required by the wavelength of the radio wave transmitted from the writing device and the dielectric constant of the dielectric.

A filter with an IC tag according to a fourth aspect of the present invention is the filter according to any one of the first to third aspects, wherein a screw portion for mounting the filter with the IC tag to a filter holding part is formed on an end surface of the exterior case. The IC tag is attached to the outer peripheral surface along a direction in which the longitudinal direction of the IC tag is different from the axial direction of the screw portion.

The filter with an IC tag according to a fifth invention is characterized in that, in the fourth invention, the direction is a direction in which a longitudinal direction of the IC tag is perpendicular to an axial direction of the screw portion.

A filter with an IC tag according to a sixth aspect of the present invention is the filter according to the fifth aspect, wherein the IC tag is affixed along the edge on the outer peripheral surface of the outer case to be attached to the filter holding component. And

A filter with an IC tag according to a seventh aspect of the present invention is the filter according to any one of the first to sixth aspects, wherein the filter is mounted on a filter holding component mounted on a work vehicle, and at least one reading device mounted on the work vehicle includes The tag information of the IC tag is read.

An IC tag for a filter according to an eighth aspect of the present invention is a filter IC tag attached to the outer peripheral surface of a filter having a metal-made outer case and having an IC chip and an antenna. The IC tag has a length that is arranged in an area of ½ or more in the circumferential direction on the outer peripheral surface of the outer case.

According to the first aspect of the invention, the IC tag is arranged in a region of 1/2 or more in the circumferential direction on the outer peripheral surface of the exterior case. For this reason, even if the filter mounting position varies due to variations in the screwing amount when the filter is screwed, and the relative position of the IC tag with respect to the read / write device or reader that communicates with the IC tag is different, the IC tag is Since the IC tag is disposed in an area of ½ or more in the circumferential direction, the IC tag can receive radio waves transmitted from the read / write device or the read device. That is, since the IC tag is provided at a position where tag information can be read from the entire circumference (360 degrees) of the filter, the read / write device can be used regardless of the orientation of the filter relative to the read / write device or the read device. The reading device can read tag information stored in the IC tag. Therefore, the information of the IC tag can be easily received by the reading / writing device or the reading device.

According to the second invention, IC tags for various types of filters having different sizes can be configured by changing the length of the sub antenna. For this reason, in various IC tags, an inlay having an IC chip and a main antenna can be shared. For this reason, the inlay marketed for IC tags can also be utilized and cost can be reduced significantly.

According to the third invention, since the sub antenna and the outer peripheral surface of the outer case can be separated from each other by the spacer made of a dielectric, it is possible to suppress the metal outer case from affecting the reception by the sub antenna.
Moreover, the length dimension of the sub antenna can be shortened by the wavelength shortening effect by the dielectric, and the length of the sub antenna can be adjusted according to the size of the filter to be mounted. In addition, since the length of the sub antenna is set to ½ of the wavelength shortened by the dielectric, the antenna can be resonated and the antenna performance can be improved.

According to the fourth invention, since the IC tag is affixed to the outer peripheral surface of the outer case along a direction different from the axial direction of the screw portion, the IC tag is attached to the outer periphery by setting the length dimension of the IC tag. It can be easily arranged in a region of 1/2 or more in the circumferential direction of the surface.
Therefore, when the screw portion is screwed to the filter head, the IC tag can easily communicate with the read / write device or the read device even if the screwing amount varies.

According to the fifth aspect, since the longitudinal direction of the IC tag is a direction perpendicular to the axial direction of the screw portion, the area where the IC tag is attached to the outer peripheral surface of the outer case can be minimized, and the IC tag is attached. Wide area can be secured. For this reason, on the outer peripheral surface of the exterior case, it is possible to secure a wide printing area for printing a filter installation instruction diagram and the like, and an area to be used when the filter is attached and detached.

According to the sixth invention, since the IC tag is affixed to the edge of the outer case of the filter, it does not obscure the printing area such as the attachment instruction printed on the filter, and does not hinder the attachment or removal of the filter. Therefore, it is possible to prevent a decrease in workability when replacing the filter.

According to the seventh aspect, by attaching the filter with the IC tag to the filter holding part of the work vehicle, the tag information of the IC tag can be read by the reading device mounted on the work vehicle. In particular, since the IC tag is arranged in an area of ½ or more in the circumferential direction of the outer case, the reading device can be used even when the relative position of the IC tag with respect to the reading device varies due to the mounting work on the filter holding component. Can reliably read tag information.

According to the eighth aspect of the invention, when the filter IC tag is mounted on the outer peripheral surface of the filter, the IC tag can be disposed in a region of 1/2 or more in the circumferential direction of the outer peripheral surface. For this reason, as in the first invention, the information of the IC tag can be easily received by the read / write device or the read device.

The perspective view which shows the hydraulic excavator which is an example of the working vehicle in which the filter with an IC tag of embodiment of this invention is utilized. Schematic which shows the arrangement | positioning state of the filter with an IC tag and the reader / writer in the machine room of the said embodiment. The block diagram which shows schematic structure of a components management system. The perspective view which shows the filter with an IC tag of the said embodiment. The top view which shows the arrangement | positioning state of the filter with an IC tag of the said embodiment. The top view which shows the arrangement | positioning state of the filter with an IC tag of the said embodiment. The top view which shows the internal structure of the IC tag for filters of the said embodiment. The longitudinal cross-sectional view which shows the internal structure of the IC tag for filters of the said embodiment. The top view which shows the cover film of the IC tag for filters of the said embodiment. The figure which shows the arrangement | positioning area | region of the IC tag attached to the outer peripheral surface of the filter with an IC tag of the said embodiment. The figure which shows the arrangement | positioning area | region of the IC tag attached to the outer peripheral surface of the filter with an IC tag of the said embodiment. The figure which shows the arrangement | positioning area | region of the IC tag attached to the outer peripheral surface of the filter with an IC tag of the said embodiment. The top view which shows the internal structure of the IC tag for filters of the modification of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a hydraulic excavator 1 which is a construction machine as one of work vehicles using a filter with an IC tag of the present invention. In the present embodiment, the excavator 1 includes a vehicle main body 2 and a work implement 3. The vehicle body 2 includes a traveling device 4 and an upper swing body 5. The upper swing body 5 houses a power generation device such as an engine (not shown) and a device such as a hydraulic pump inside the machine room 5A. The machine room 5 A is disposed on one end side of the upper swing body 5.

In the present embodiment, the hydraulic excavator 1 uses, for example, an internal combustion engine such as a diesel engine as a power generation device, but the hydraulic excavator 1 is not limited to such a configuration. The hydraulic excavator 1 may include, for example, a so-called hybrid power generation device in which an internal combustion engine, a generator motor, and a power storage device are combined.

The upper swing body 5 has a cab 5B. The cab 5B is placed on the other end side of the upper swing body 5. That is, the cab 5B is disposed on the side opposite to the side on which the machine room 5A is disposed.
The upper swing body 5 includes a counterweight 5C. The counterweight 5C is provided for weight balance with the work machine 3, and is filled with heavy objects.

The traveling device 4 has

crawler belts

4a and 4b. The traveling device 4 is driven by a hydraulic motor (not shown) and rotates when the

crawler belts

4 a and 4 b rotate, thereby causing the hydraulic excavator 1 to travel. The work machine 3 is attached to the side of the cab 5B of the upper swing body 5.

The upper revolving unit 5 is the front side where the working machine 3 and the operator cab 5B are arranged, and the rear side where the machine room 5A is arranged. The left side toward the front is the left of the upper swing body 5, and the right side toward the front is the right of the upper swing body 5. Further, the excavator 1 or the vehicle main body 2 is on the lower side of the traveling device 4 with respect to the upper swing body 5, and the upper side of the upper swing body 5 with respect to the traveling device 4. When the excavator 1 is installed on a horizontal plane, the lower side is the vertical direction, that is, the gravity direction side, and the upper side is the opposite side of the vertical direction.

The work machine 3 includes a boom 6, an arm 7, a bucket 8, a boom cylinder 6A, an arm cylinder 7A, and a bucket cylinder 8A. The base end portion of the boom 6 is swingably attached to the front portion of the vehicle main body 2 via a boom pin 6B. A base end portion of the arm 7 is swingably attached to a distal end portion of the boom 6 via an arm pin 7B. A bucket 8 is swingably attached to the tip of the arm 7 via a bucket pin 8B.

In the machine room 5A, an engine and a hydraulic pump 12 (not shown) are accommodated. For example, as shown in FIG. 2, a hydraulic pump 12 is installed and a bracket 11A is attached to the pump room of the machine room 5A. A filter head 13A is attached to the bracket 11A, and a hose 14A is attached to the filter head 13A.
A filter 20A is attached to the filter head 13A. This filter 20A is an engine oil filter, and dust contained in the oil flowing through the hose 14A is removed by the filter 20A.

A filter head 13B is attached to the pump room of the machine room 5A via a bracket 11B, and a fuel hose 14B is attached to the filter head 13B.
A filter 20B is attached to the filter head 13B. This filter is a fuel pre-filter, and dust contained in the fuel that has flowed to the fuel hose 14B is removed by the filter 20B.
The filter heads 13 A and 13 B are filter holding parts for holding and fixing the filter 20.
As shown in FIG. 3, the fuel main filter 20C is attached to the engine room of the machine room 5A using a filter head (not shown). Each of the

filters

20A, 20B, and 20C described above is a part that needs to be periodically replaced because the internal filter member becomes clogged by use. The arrival of the regular replacement time is determined by, for example, the operation time indicated by a service meter that measures the operation time of the engine of the hydraulic excavator 1.

IC tags 30A, 30B, and 30C are attached to the

filters

20A, 20B, and 20C, respectively.
A reader / writer (read / write device) 15 that reads information from the IC tags 30A, 30B, and 30C is attached to the machine room 5A via a bracket 16. In this embodiment, the case where the reader / writer (read / write device) 15 is used will be described. However, even when the reader (reading device) having a function of only reading the information of the IC tags 30A, 30B, and 30C is used. The present invention is applicable. Furthermore, the present invention is applicable even when a writer (writing device) having a function of only writing information to the IC tags 30A, 30B, and 30C is used.

[Work vehicle parts monitoring system]
Next, a component monitoring system using information on the IC tags 30A, 30B, and 30C of the

filters

20A, 20B, and 20C will be described with reference to FIG.
The component monitoring system includes a management center 100, a hydraulic excavator 1, and a communication network 110 that transmits and receives component information between the management center 100 and a plurality of hydraulic excavators 1.
The management center 100 centrally manages various types of information including part information of a plurality of work vehicles. A management server 101 of the management center 100 manages and stores component information of the excavator 1. As the part information, a product number for specifying the type of part, a manufacturing date, a serial number (manufacturing number) for specifying individual parts among parts having the same product number, a supplier code indicating the manufacturer of the parts, and the like are stored.

The communication network 110 is a network for data communication by wireless communication, and uses a mobile phone network or a satellite communication network.
A hydraulic excavator 1 that is a work vehicle is provided with a communication controller 200 having a communication terminal 202 connected to an antenna 201 for communication via a communication network 110. The hydraulic excavator 1 is provided with an engine controller 211, a pump controller 212, a monitor device 213, and the reader / writer 15. In this embodiment, two reader / writers 15 A and 15 B are provided as the reader / writer 15. There may be only one reader / writer 15 or two or more reader / writers 15. Since the communication state between the reader / writer 15 and each

IC tag

30A, 30B, 30C is determined by the relative positional relationship, if a plurality of reader / writers 15 are provided, the information of the IC tag can be read reliably, or a plurality of Information can be read from the IC tag. These devices and the communication controller 200 are connected to each other via a vehicle body network 210 so that data communication can be performed.

The reader / writer 15A is provided in the pump room and communicates with the IC tags 30A and 30B of the

filters

20A and 20B. The reader / writer 15B is provided in the engine room and communicates with the IC tag 30C of the filter 20C. In the following description, the IC tags 30A, 30B, and 30C may be collectively referred to as the IC tag 30. The reader /

writers

15A and 15B may be collectively referred to as the reader / writer 15 in some cases.

The communication controller 200 has a timer function and operates the reader / writer 15 periodically, such as once a day, and the reader / writer irregularly according to the operation instructions of the administrator of the management center 100 and the operator of the excavator 1. 15 is activated. That is, the administrator transmits a predetermined activation signal from the management center 100 to the hydraulic excavator 1 via the communication network 110, and the communication controller 200 activates the reader / writer 15 when receiving the activation signal. Good. Alternatively, when the operator of the excavator 1 operates an operation button for generating a predetermined activation signal, the communication controller 200 may activate the reader / writer 15 when receiving the activation signal. Further, when the operator starts an engine (not shown) of the excavator 1 by operating a key switch (not shown), power is supplied from a battery (not shown) to the reader / writer 15 to operate the reader / writer 15. Also good. Further, a sensor for detecting the attachment / detachment of the

filters

20A, 20B may be provided in the filter heads 13A, 13B, and the reader / writer 15 may be operated according to the sensor output.
Then, the communication controller 200 operates the reader / writer 15 to read information on the IC tag 30, write new data to the IC tag 30, and update old data.
The communication controller 200 transmits data read from the IC tag 30 to the management server 101 of the management center 100 via the communication terminal 202, the antenna 201, and the communication network 110. In addition, the other controller, for example, the pump controller 212, may have the function of the communication controller 200 as described above.

According to the above component monitoring system, the management server 101 can grasp the mounting timing of the

filters

20A, 20B, and 20C by reading the information of the IC tags 30A, 30B, and 30C. For this reason, the management server 101 can manage the replacement time of each

filter

20A, 20B, 20C in a work vehicle easily and reliably. In addition, it is possible to notify a service person who maintains the work vehicle of the replacement time of each of the

filters

20A, 20B, and 20C. For this reason, the service person can reliably perform the filter replacement service for the customer's work vehicle at an appropriate time. Furthermore, if the filter replacement time of each work vehicle can be grasped, the sales inventory of each filter can be optimized.
Furthermore, the management server 101 can also detect that the filter is frequently replaced in a specific work vehicle, and whether the service person has an abnormality in the work vehicle or the filter or is being used unreasonably, etc. Can determine the necessity of inspection and maintenance, etc., and can take appropriate actions promptly. Further, by reading out information from the IC tag 30, it is possible to detect whether a genuine filter is mounted or a counterfeit filter is mounted, so that counterfeit measures can be easily taken. .
As described above, it is very important for the component management as described above that the information of the IC tag 30 is reliably acquired by the reader / writer 15.

[Configuration of machine room]
Next, the filter 20 (20A, 20B, 20C) will be described.
As shown in FIGS. 4, 5A and 5B, a filter 20 with an IC tag (hereinafter abbreviated as a filter) 20 such as an oil filter 20A, a fuel prefilter 20B, and a fuel filter 20C is attached to the machine room 5A.
The machine room 5A is provided with a reader / writer (read / write device) 15 (15A, 15B) that reads information from the IC tag 30 attached to the filter 20.

[Reader / Writer]
The reader / writer 15 of the present embodiment transmits and receives with the IC tag 30 using, for example, a 900 MHz UHF band radio wave. Since radio waves in this frequency band can communicate with the IC tag 30 separated by about 1 m, they can be used in the engine room or pump room of the excavator 1.

Filter configuration
As shown in FIG. 4, the filter 20 includes a cylindrical outer case 21 and a retainer 22.
The outer case 21 is formed by drawing a steel plate by a press and is formed in a bottomed cylindrical shape. The retainer 22 is disposed on the opening side of the outer case 21 and integrated with the outer case 21 by caulking. The retainer 22 includes a female screw portion 25 formed in the central shaft portion. Instead of the female screw portion 25, a male screw portion may be provided, and a female screw portion may be provided on the filter head.
An IC tag 30 is attached to the outer peripheral surface 23 that is the side surface of the outer case 21. The IC tag 30 is made of a band-shaped and bendable material as shown by a two-dot chain line in FIG. 4, and is an end portion of the outer peripheral surface 23 of the outer case 21 on the retainer 22 side, that is, the upper end of the outer peripheral surface 23 in FIG. It is pasted along.

[Configuration of IC tag]
As shown in FIGS. 6 and 7, the IC tag 30 covers the surface of the inlay 31, the sub-antenna 35, the base (spacer) 36 that supports the inlay 31 and the sub-antenna 35, and the surface of the inlay 31 and the sub-antenna 35. A cover film 37 is provided.
The IC tag 30 is a passive type IC tag that generates electric power by electromagnetic induction by a radio wave transmitted from the reader / writer 15 or microwaves. For this reason, a built-in battery can be made unnecessary, the cost can be reduced, and malfunction due to battery exhaustion can be prevented.

The IC tag 30 applies an adhesive 38 to the surface of the base 36, adheres the inlay 31 and the sub-antenna 35, and further applies an adhesive 39 to the surface of the inlay 31 and the sub-antenna 35 to apply a cover film 37. Manufactured by bonding.
In addition, an adhesive 40 for adhering the IC tag 30 to the filter 20 is laminated on the back surface of the base 36. When the side with the cover film 37 of the IC tag 30 is taken as a table, a release paper (not shown) is pasted on the back surface of the IC tag 30, that is, the back surface of the adhesive 40, and the IC tag 30 is adhered to the filter 20. In this case, the release paper may be peeled off to expose the adhesive 40 and adhere.

[Inlay]
The inlay 31 is configured by sandwiching an IC chip 32 and a main antenna 33 between two sheets 34. The inlay 31 can be curved along the outer peripheral surface 23 of the filter 20. Such an inlay 31 is commercially available and can be purchased at a low cost. That is, the IC chip 32 is a general one used in an IC tag. Similarly, the main antenna 33 is also a general antenna used for IC tags. In particular, the main antenna 33 has a bent structure so that the length L1 of the inlay 31 in the longitudinal direction can be shortened.
For this reason, the length dimension L1 of the main antenna 33 is shorter than the length dimension L2 of the sub antenna 35 described later.
In addition, the IC chip 32 of the inlay 31 is previously provided with a product number that identifies the type of component, a manufacturing date, a serial number (manufacturing number) that identifies each component among components of the same product number, and a supplier code that indicates the manufacturer of the component. Tag information such as “etc.” is stored.

[Sub antenna]
The sub-antenna 35 is a belt-like antenna made of aluminum foil. The sub-antenna 35 is made of aluminum and is a thin foil and is a thin foil. Therefore, the sub-antenna 35 can be curved along the outer peripheral surface 23. The sub-antenna 35 is arranged along the longitudinal direction of the main antenna 33, in other words, the longitudinal direction of the inlay 31 and with a gap that can be electromagnetically coupled to the main antenna 33. The gap dimension G may be set to 3 mm or less, for example.

The base 36 is made of a dielectric material. The dielectric material preferably has a high dielectric constant in terms of wavelength shortening effect, and preferably has a low dielectric loss in order to increase the radiation efficiency of the antenna. Further, the base 36 needs to have a material property that can be bent so that the base 36 can be attached along the outer peripheral surface 23 of the filter 20.
For this reason, in this embodiment, it is comprised with dielectric materials, such as foaming urethane type resin and foaming PET type resin.
The urethane foam resin is inexpensive, but has a property of absorbing moisture, and has a demerit that the dielectric constant changes when moisture is absorbed. Foamed PET (polyethylene terephthalate) resin has the advantage of not absorbing moisture, but is expensive. Therefore, the material of the dielectric material constituting the base 36 is selected in consideration of the arrangement environment of the filter 20 to which the IC tag 30 is attached. If the filter 20 is installed in a place where it comes into contact with rainwater depending on the structure of the machine room 5A, it is preferable to use a foamed PET resin for the base 36.
Further, when the main antenna 33 and the sub-antenna 35 are close to the outer peripheral surface (metal surface) 23 of the metal outer case 21, the metal surface affects the reception of the

antennas

33 and 35. Is preferably arranged away from the metal surface. For this reason, the said base 36 functions as a spacer which arrange | positions each

antenna

33 and 35 away from a metal surface. Accordingly, the thickness dimension of the base 36 is set in accordance with the dimension that separates the

antennas

33 and 35 from the metal surface.

The length dimension (longitudinal dimension) L2 of the sub-antenna 35 is 1 of the wavelength λ1 obtained from the frequency (wavelength λ) of radio waves to be transmitted and received and the dielectric constant ε of the base 36 stacked on the sub-antenna 35. The length is set to about / 2.
That is, the dielectric has a wavelength shortening effect. When the dielectric constant of the base 36 is ε and the wavelength of the radio wave transmitted from the reader / writer 15 is λ, the wavelength λ1 of the radio wave received by the sub antenna 35 is Reduced to λ / √ε. Since the length of the antenna is preferably about 1/2 of the shortened wavelength (λ / √ε), the length L2 of the sub antenna 35 is also about 1/2 of the shortened wavelength. Is set. That is, the relationship between the length L2 of the sub antenna 35 and the wavelength λ or the dielectric constant ε of the radio wave is expressed by a relational expression L2 = (1/2) × (λ / √ε). The length L2 is preferably set to a length determined by this relational expression.

The width dimension W of the sub-antenna 35 is set to be approximately the same as the width dimension of the inlay 31. Increasing the width dimension W of the sub-antenna 35 increases the frequency band of radio waves that can be transmitted and received. However, since the frequency of the radio wave of the reader / writer 15 is constant, it is not necessary to increase the width dimension W actively. For this reason, the width dimension W of the sub-antenna 35 is set according to the width dimension of the inlay 31.

The cover film 37 is composed of a polyester heat-resistant label or a PET (polyethylene terephthalate) heat-resistant label. As shown in FIG. 8, information about the filter 20 to which the IC tag 30 is bonded is displayed on the cover film 37 by printing a number 371 and a barcode 372. For example, information such as the product number and lot serial number of the filter 20 and the date of manufacture of the filter 20 is printed as a number 371 and a barcode 372.

9A, 9B, and 9C are diagrams for explaining the arrangement region of the IC tag attached to the outer peripheral surface of the filter with an IC tag according to the present embodiment. FIG. 9A is a developed view of the outer peripheral surface 23 of the filter 20, and the entire peripheral length dimension of the outer peripheral surface 23 is indicated by FL. An area (arrangement area) in which the IC tag 30 is to be arranged is indicated as an area 50 by hatching. A central axis of the filter 20 is shown as an axis AX. That is, when the filter 20 is viewed from above, it is circular, but the axis passing through the center point is the axis AX. Further, the length of the filter 20 in the axis AX direction is indicated by FH. In the IC tag 30 having the structure as described above, the length dimension L in the longitudinal direction of the IC tag 30 is the sum of the length dimension L1 of the main antenna 33, the gap dimension G, and the length dimension L2 of the sub antenna 35. Dimensions. The IC tag 30 having the length L is attached to the outer peripheral surface 23 of the filter 20 and attached to a predetermined region 50 (arrangement region) (see FIGS. 9A, 9B, and 9C). Details of the specific position of the IC tag 30 attached to the area 50 (arrangement area) will be described later.
Here, the length dimension L is set to ½ or more of the entire circumferential length dimension FL of the outer peripheral surface 23 of the filter 20. In this embodiment, as an example, the length dimension L is set to a dimension slightly shorter than the entire peripheral length dimension FL of the outer peripheral surface 23 of the filter 20 (about 95% of the total peripheral length dimension FL). Has been. That is, in this case, the IC tag 30 that satisfies the relational expression L = FL × 0.95 is used as the relationship between the length dimension L and the entire circumference length dimension FL.

[Attaching IC tag to filter]
As shown in FIG. 4 or FIG. 9B, the IC tag 30 is preferably attached along the circumferential direction of the outer peripheral surface 23 to a region along the upper end edge on the retainer 22 side of the outer peripheral surface 23 of the filter 20. The arrangement area of the IC tag 30 is an area having a width dimension of 20 mm from the upper end edge of the outer peripheral surface 23, for example.
In the present embodiment, the length dimension L of the IC tag 30 is about 95% of the entire circumferential length dimension FL of the outer peripheral surface 23 of the filter 20. The attachment position of the IC tag 30 will be described below with reference to FIGS. 9A and 9B. When an IC tag 30 having a length L equal to the entire circumference length FL is used and pasted in a direction perpendicular to the axis AX, it is assumed to be pasted in a 100% region in the circumferential direction. In this embodiment, the IC tag 30 including the main antenna 33 and the sub antenna 35 is attached in a direction perpendicular to the axis AX, and the IC tag 30 is disposed in a 95% region in the circumferential direction of the outer peripheral surface 23 of the filter 20. The tag 30 is pasted. That is, the IC tag 30 is arranged in a region that is 1/2 or more in the circumferential direction of the filter 20 in terms of an arrangement region. The region of ½ or more in the circumferential direction is a region 50 surrounded by the vertical line LL and the vertical line LR shown in FIG. 9A and a length that is at least half (½) the entire circumferential length FL. Means. The vertical axis LL and the vertical axis LR are lines on the outer peripheral surface 23 and parallel to the axis AX in space. Therefore, as shown in FIG. 9B, one end in the longitudinal direction of the IC tag 30 is arranged so as to straddle the vertical axis LL, and the other end in the longitudinal direction of the IC tag 30 is straddled on the vertical axis LR. If arranged, the radio wave from the reader / writer 15 can be received, and the tag information of the IC tag 30 can be read well and surely, and the tag information can be written to the IC tag 30 well and reliably. That is, the IC tag 30 described above is attached to 95% of the circumferential direction of the filter 20, but the IC tag 30 is ½ or more (50% or more of the circumferential direction of the filter 20). ) As long as it has the length L2 of the sub-antenna 35 as arranged in the area (1).

The filter 20 with an IC tag to which such an IC tag 30 is attached is attached by screwing a female screw portion 25 into a male screw portion (not shown) of the filter heads 13A and 13B. 5A and 5B are plan views showing the arrangement state of the filter with an IC tag of this embodiment. 5A and 5B show a state in which the machine room 5A is viewed from above, and shows the positional relationship between the reader / writer 15 and the filter 20. FIG. Since the filter 20 is circular when viewed from above, it is circular as shown in FIGS. 5A and 5B, and an IC tag 30 is attached to the outer peripheral surface 23 of the filter 20, and FIG. A case where the filter 20 is attached to a position where the tag information is easy to read is shown facing the lighter 15. FIG. 5B shows a case where the attachment position of the filter 20 is at a position rotated by 180 degrees with respect to the case of FIG. 5A.
Thus, as shown in FIGS. 5A and 5B, even if the mounting position of the filter 20 varies due to variations in the screwing amount when the filter 20 is screwed, and the relative position of the IC tag 30 with respect to the reader / writer 15 is different, Since the

antennas

33 and 35 cover almost the entire circumferential area of the filter 20, the IC tag 30 can receive radio waves (direct waves) transmitted from the reader / writer 15. In other words, since the IC tag 30 is provided at a position where tag information can be easily read from the entire circumference (360 degrees) of the filter 20, the reader / writer 15 can be positioned in any direction with respect to the reader / writer 15. Can read tag information stored in the IC tag 30.

Further, since the

antennas

33 and 35 cover almost the entire circumferential area of the filter 20, the IC tag 30 transmits the radio wave transmitted from the reader / writer 15 in the machine room 5A (engine room or pump room). ) Can also be received. For this reason, even if metal parts and piping are arranged between the IC tag 30 and the reader / writer 15 and direct wave transmission / reception is not possible, the reader / writer 15 reads the tag information of the IC tag 30 by the reflected wave. be able to.
Therefore, when a plurality of filters 20 are arranged, it is not necessary to perform a detailed simulation of the radio wave propagation state, and the reader / writer 15 can easily read the tag information of the IC tag 30.

In addition, on the outer peripheral surface 23 of the filter 20, there are many explanations such as attachment instructions for the filter 20, but since the IC tag 30 is attached along the upper edge of the outer peripheral surface 23, It is possible to prevent the attachment instruction diagram from being hidden. For this reason, the worker can perform the mounting operation while confirming the mounting instruction diagram.
When an operator installs a new filter 20, the filter 20 is grasped by hand and screwed into the filter heads 13A and 13B. Since the filter 20 has a certain weight, the operator lifts the filter 20 by hand. It is necessary to screw in the filter heads 13A and 13B while pressing them. Therefore, the operator performs the mounting operation while touching the central portion or the lower portion, not the vicinity of the upper end edge of the outer peripheral surface 23 of the filter 20. Since the IC tag 30 is affixed along the upper edge of the outer peripheral surface 23 of the filter 20, the operator's hand hardly touches the IC tag 30. For this reason, the IC tag 30 is not damaged by applying excessive stress to the IC tag 30 by the power of the operator's hand, and dirt such as oil and mud is deposited on the surface of the IC tag 30 through the operator's hand. It can also prevent adhesion.
Moreover, when removing the filter 20 in order to replace the filter 20, the removal work is performed using a tool called a filter wrench. The operator hangs the filter wrench on the outer peripheral surface 23 of the filter 20 and removes it. However, since the IC tag 30 is affixed along the upper edge of the outer peripheral surface 23, the operator can use the filter wrench as a place to hang the filter wrench. The center part and the lower part of the outer peripheral surface 23 of 20 can be selected, and the removal work of the filter 20 can be easily performed without hindering the work.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the IC tag 30 of the embodiment, the inlay 31 and the sub-antenna 35 are bonded and integrated on the base 36. However, as shown in FIG. You may use IC tag 30A which comprised separately. In this case, a base 36A to which the inlay 31 is bonded and a base 36B to which the sub antenna 35 is bonded are provided, and when these

bases

36A and 36B are attached to the outer peripheral surface 23 of the filter 20, The gap dimension G between the

antennas

33 and 35 may be attached in close proximity so as to be a dimension capable of electromagnetic coupling (for example, 3 mm or less).

In the IC tag 30 of the above embodiment, one sub antenna 35 is arranged on one side in the longitudinal direction of the inlay 31, but the sub antennas 35 may be arranged on both sides of the inlay 31 in the longitudinal direction. If two sub-antennas 35 are provided in this way, the length dimension L that determines the arrangement area of the IC tag 30 can be increased by the length dimension L2 of the sub-antenna 35. For this reason, even in the filter 20 having a larger diameter, the IC tag 30 can be disposed in a region of ½ or more in the circumferential direction of the outer peripheral surface 23 of the filter 20.

Furthermore, the sub-antenna 35 is not limited to the belt-like one of the above embodiment. Similar to the main antenna 33 of the inlay 31, a shortened antenna formed by bending or a monopole antenna may be used. In this case, since the length dimension L that determines the arrangement region of the IC tag 30 is shorter than that in the above embodiment, such an IC tag 30 is a filter having a smaller diameter than the filter 20 of the above embodiment (total circumferential length). It can be used for a filter with a short dimension FL.

In the above embodiment, the IC tag 30 is configured by the inlay 31 and the sub-antenna 35. However, the main antenna directly connected to the IC chip 32 is extended in a band shape, and the length of the main antenna in the longitudinal direction is measured. An IC tag having a length such that the length dimension L in the longitudinal direction of the IC tag including can be arranged in a region of ½ or more in the circumferential direction of the outer peripheral surface 23 of the filter 20 may be used.

The attaching position of the IC tag 30 is not limited to the upper end edge of the outer peripheral surface 23 as described above as long as priority is given to reading and writing tag information by the reader / writer 15 in a good and reliable manner. For example, you may affix on the lower end edge of the outer peripheral surface 23 of the filter 20. In short, it is a position that does not hinder the attachment or removal of the filter 20 and does not obscure the print area such as the attachment instruction diagram printed on the filter 20, and is half the circumferential direction of the outer peripheral surface 23 of the filter 20. The IC tag 30 may be attached to the above area.

Further, since the IC tag 30 only needs to be arranged in a region of 1/2 or more in the circumferential direction on the outer peripheral surface 23 of the filter 20, as in the above-described embodiment (FIGS. 4 and 9B), Not only what is stuck in the direction perpendicular to the axis AX direction, but may be stuck in a direction inclined obliquely with respect to the axis AX direction. As shown in FIG. 9C, the filter 20 may be provided with an IC tag 30 having a predetermined length dimension L that can be attached to a region of ½ or more in the circumferential direction in the region 50. . When the predetermined length L is particularly long, that is, when the entire length of the IC tag 30 is one or more rounds of the outer peripheral surface 23 of the filter 20, the direction inclined obliquely with respect to the axis AX direction It is preferable to stick to and arrange in a spiral. In this way, it is possible to prevent the longitudinal ends of the IC tag 30 from overlapping.

Furthermore, the filter of the present invention is not limited to the filter 20 having the cylindrical outer case 21 of the above-described embodiment, but may have a rectangular tube-shaped outer case such as a square or hexagon.
Further, the filter 20 of the above embodiment is a filter having a mounting structure in which the mounting position in the rotation direction of the filter 20 varies depending on the screwing amount of the female screw portion 25, but the mounting position in the rotation direction does not vary. There may be. In this case as well, depending on the filter mounting position, the IC tag 30 may not be able to transmit / receive directly to / from the reader / writer 15, but if the IC tag covers more than half of the filter circumferential direction. It is possible to communicate by reflected waves and read tag information. For this reason, when a plurality of filters are arranged, the IC tag can be arranged without performing a detailed simulation of the radio wave propagation state.

The IC tag 30 includes the base 36 made of a dielectric, but the spacer made of the dielectric may be provided on the outer peripheral surface 23 of the filter 20. For example, a resin paint or the like serving as a dielectric may be applied to the outer peripheral surface 23 with a predetermined thickness, and the inlay 31 and the sub-antenna 35 may be attached on the paint.

The present invention can be applied not only to construction machines such as hydraulic excavators but also to other construction machines such as wheel loaders, bulldozers, motor graders, dump trucks, and to industrial vehicles such as forklifts. That is, it can be used for an engine oil filter and a fuel filter in work vehicles such as construction machines and industrial vehicles.

DESCRIPTION OF SYMBOLS 1 ... Hydraulic excavator, 15 ... Leader writer, 20 ... Filter with IC tag, 21 ... Exterior case, 22 ... Retainer, 23 ... Outer peripheral surface, 25 ... Female screw part, 30, 30A ... IC tag, 31 ... Inlay, 32 ... IC chip, 33 ... main antenna, 35 ... sub-antenna, 36, 36A, 36B ... base, 37 ... cover film.

Claims

It is a filter with an IC tag having an exterior case made of metal and formed in a cylindrical shape, and an IC tag attached to the outer peripheral surface of the exterior case,
The IC tag has an IC chip and an antenna,
The IC tag is a filter with an IC tag, wherein the IC tag is arranged in a region of ½ or more in the circumferential direction on the outer peripheral surface of the outer case.
The filter with an IC tag according to claim 1,
The IC tag includes an inlay having an IC chip and a main antenna, and at least one sub-antenna arranged via a gap that can be electromagnetically coupled to the main antenna. Tagged filter.
The filter with an IC tag according to claim 2,
Between the sub antenna and the outer peripheral surface of the outer case, a spacer made of a dielectric is disposed,
With the IC tag, the antenna length of the sub-antenna is half the wavelength required by the wavelength of the radio wave transmitted from the reading device or writing device and the dielectric constant of the dielectric filter.
In the filter with an IC tag according to any one of claims 1 to 3,
On the end surface of the outer case, a screw portion for mounting the filter with the IC tag to the filter holding component is formed,
The filter with an IC tag, wherein the IC tag is attached to the outer peripheral surface along a direction in which a longitudinal direction of the IC tag is different from an axial direction of the screw portion.
The filter with an IC tag according to claim 4,
The filter with an IC tag is characterized in that the direction is a direction in which the longitudinal direction of the IC tag is perpendicular to the axial direction of the screw portion.
The filter with an IC tag according to claim 5,
The filter with an IC tag, wherein the IC tag is affixed along an edge on a side where the IC tag is mounted on the outer peripheral surface of the exterior case.
In the filter with an IC tag according to any one of claims 1 to 6,
It is attached to the filter holding part mounted on the work vehicle,
A filter with an IC tag, wherein at least one reading device mounted on the work vehicle reads tag information of the IC tag.
An IC tag for a filter that is affixed to the outer peripheral surface of a filter having an outer case made of metal and having a cylindrical shape,
Having an IC chip and an antenna,
The IC tag for a filter, characterized in that the IC tag has a length that is arranged in a region of ½ or more in the circumferential direction on the outer peripheral surface of the exterior case.