JP3222350U - Liquid level detection device provided with insertion and removal plug - Google Patents

Abstract

An electrical connection with a magnetic induction member is possible simply by connecting a connector of a signal line group to an insertion / extraction plug, so that the entire volume can be reduced, wiring arrangement becomes unnecessary, and clutter is eliminated. A liquid level detection device including an insertion / extraction plug is provided. A liquid level detection device includes a stationary member, a rotating member, and a float member. The stationary member includes an insulating carrier and a connection terminal group 12. The insulating carrier is formed with an insertion / extraction plug 111 and a protruding shaft 112 in which a magnetic induction member is embedded. The connection terminal group is connected to the magnetic induction member and extends into the insertion / extraction plug. The rotating member includes a rotor 21 that is rotatably fitted on the protruding shaft, and a magnet is disposed on the rotor. The float member is provided to rotate the rotating member. [Selection] Figure 2

Description

  The present invention relates to liquid level detection, and more particularly to a liquid level detection device provided with a plug.

  A sensor relating to the liquid level must be mounted in the container and transmit the detected signal to another external location (for example, a level gauge). Therefore, it is necessary to connect a signal line group between the sensor and the level gauge.

  However, in the conventional sensor, signal lines are generally fixedly connected like the tail of a rat. For this reason, it has been long regarded as a problem that it is clearly cluttered, and the overall volume remains large even if the wiring is organized.

  This invention is a liquid level detection apparatus provided with an insertion / extraction plug, and it aims at providing the liquid level detection apparatus to which a signal wire | line group is connected by connecting a connector to an insertion / extraction plug after attachment of a liquid level detection apparatus is completed. Do.

  In order to achieve the above object, the present invention is a liquid level detection device provided with an insertion and removal plug, including an insulating carrier, a connection terminal group and a magnetic induction member, in which the insertion and removal plug and the projecting shaft are formed A stationary member that is electrically connected to the magnetic induction member and extends into the insertion plug while the connection terminal group is electrically connected to the magnetic induction member; A rotating member including at least one magnet disposed in the rotor, the rotor being rotatably fitted to the projecting shaft, and provided on the rotating member and the rotating member A liquid level detection device is provided that includes a float member that is rotatable relative to a stationary member.

  Compared with the prior art, the present invention has the following effects. That is, since it is sufficient to connect the connector of the signal line group to the plug in and out only when necessary, the entire volume can be reduced, and the effect of eliminating the need for wiring and eliminating clutter is obtained.

FIG. 1 is an exploded perspective view of the liquid level detection device of the present invention. FIG. 2 is an assembled perspective view of the liquid level detection device of the present invention. FIG. 3 is a view showing the operation of the liquid level detection device of the present invention. FIG. 4 is a cross-sectional view based on FIG. 2 of the liquid level detection device of the present invention. FIG. 5 is a cross-sectional view of the magnet and the installation position in the liquid level detection device of the present invention. FIG. 6 is an exploded perspective view of the stationary member in the liquid level detection device of the present invention (without the housing).

  The details and technical contents of the present invention will be described as follows by combining the drawings. However, the drawings are provided for reference and explanation only, and do not limit the present invention.

  As shown in FIGS. 1 to 5, the present invention detects the liquid level in a container (not shown), such as the water level of a tank or the oil level of a fuel tank, and detects the detected liquid level. The liquid level detection device is provided with an insertion / removal plug for transmitting the signal of the transmission to a different place by connecting it to a connector (not shown). The liquid level detection device includes a stationary member 1, a rotary member 2 and a float member 4, and preferably further includes an assembly member 3.

  Since the stationary member 1 is used for fixing to the container, it is a stationary member so as not to move. The stationary member 1 includes an insulating carrier 11 (see FIGS. 4 and 6), a connection terminal group 12 and a magnetic induction member 13, and preferably further includes a housing 14.

  The insertion and removal plug 111 and the protruding shaft 112 are formed in the insulating carrier 11. Specifically, as shown in FIG. 4 and FIG. 6, the insertion and removal plug 111 and the protruding shaft 112 are separated from each other, and both are integrally molded, injection molded or stretch molded on the insulating carrier 11. The magnetic induction member 13 is embedded in the protruding shaft 112. The connection terminal group 12 is provided on the insulating carrier 11 and is electrically connected to the magnetic induction member 13 and extends into the insertion and removal plug 111. The plug 111 is located at one end of the insulating carrier 11, and in particular, the plug 111 and the connector are located at the upper end of the insulating carrier 11 so as to be separated from the liquid in the container.

  The insulating carrier 11 and the connection terminal group 12 are both provided in the housing 14. Further, the insertion and removal plug 111 and the protruding shaft 112 in which the magnetic induction member 13 is embedded are both exposed from the housing 14. In particular, the housing 14 is an injection molded lapping housing. That is, the insulating carrier 11 and the connection terminal group 12 are covered with a lapping housing that is injection-molded by an injection lapping method, and the insertion and removal plug 111 and the protruding shaft 112 are exposed.

  In the housing 14, a fixing portion 144 is formed below the insertion and removal plug 111, and the stationary member 1 is fixed to the container via the fixing portion 144. Further, the insertion and removal plug 111 is located above the fixing portion 144.

  The rotating member 2 is a rotatable member in order to rotate with respect to the stationary member 1. The rotating member 2 includes a rotor 21 and at least one magnet 22 disposed on the rotor 21. The number of magnets 22 may be one, for example, one magnet (not shown) having both an N pole and an S pole. In the present embodiment, the case of two magnets 22 as illustrated is described as an example. Further, the rotor 21 is rotatably fitted on the protruding shaft 112, and can be rotated about the protruding shaft 112. And, the magnetic induction member 13 is positioned to correspond between the two magnets 22. Specifically, the rotor 21 has a through hole 211 for inserting the projecting shaft 112.

  The float member 4 floats in the liquid so as to follow the displacement of the liquid level. The float member 4 is provided on the rotating member 2 to make the rotating member 2 rotatable relative to the stationary member 1. Thereby, the change of the liquid level is converted by the float member 4 into the change of the rotation angle of the rotary member 2.

  Therefore, as shown in FIGS. 2 to 4, when the float member 4 is displaced up and down according to the liquid level, the rotary member 2 is rotated relative to the stationary member 1. When the rotary member 2 rotates, the two magnets 22 rotate with the rotor 21 around the magnetic induction member 13 in the projecting shaft 112. Then, by positioning the two magnets 22 to correspond to different positions of the magnetic induction member 13, the magnetic induction member 13 generates different magnetic induction signals accordingly. These magnetic induction signals are transmitted to another location (for example, a water gauge or oil level gauge) via the plug 111 and the connector connected to the plug 111. In other words, it is possible to transmit the magnetic induction signal induced by the magnetic induction member 13 simply by connecting the connector of the signal line group (not shown) to the insertion and removal plug 111 (that is, the connector is connected to the insertion and removal plug 111) Alone can be electrically connected to the magnetic induction member 13 via the connection terminal group 12). As a result, the overall volume can be reduced, the wiring can be eliminated, and the effect of eliminating clutter is obtained.

  In addition, as shown in FIG. 1, FIG. 4 and FIG. 5, it is preferable to further form a projecting ring 141 surrounding the projecting shaft 112 in the housing. Further, it is preferable that a ring concave groove 212 is further opened in the rotor 21 corresponding to the projecting ring 141. When the projecting ring 141 is fitted into the ring recessed groove 212, the rotor 21 is further annularly guided by the projecting ring 141 along the ring recessed groove 212 and becomes rotatable relative to the stationary member 1. Further, the rotor 21 is further provided with two installation positions 214, and the two magnets 22 are respectively installed and positioned with respect to the two installation positions 214.

  As shown in FIGS. 1 to 4, the assembling member 3 is used to restrict and maintain the fitting state of the stationary member 1 and the rotating member 2. That is, the assembly member 3 can restrict and maintain the rotor 21 so as to be rotatably fitted to the protruding shaft 112. The assembling member 3 is inserted into the through hole 211 and fitted in contact with the projecting shaft 112, and the space between the rotating member 2 and the stationary member 1 can be regulated.

  In detail, the assembling member 3 has the abutment portion 32 and the plurality of engaging members 33, and preferably further includes the fitting ring 31. The to-be-stopped part 2111 is provided in the position corresponding to the through-hole 211 among the rotors 21 (refer FIG. 4). Further, the stationary member 1 is formed with a plurality of engaged portions 142 disposed corresponding to the protruding shaft 112 (see FIG. 4).

  The abutment portions 32 are flanges projecting from one end of the fitting ring 31, and the respective engagement members 33 are a plurality of resilient engagement arms formed on the other end of the fitting ring 31. Each resilient engagement arm includes an engagement body 331 which engages with each engaged portion 142. The to-be-stopped part 2111 is a recessed groove opened on the inner wall of the through hole 211. Each engaged portion 142 is a plurality of engaged grooves opened in the housing 14. Further, the stationary member 1 is provided with a plurality of insertion grooves S surrounding the periphery of the protruding shaft 112 (see FIGS. 1 and 4), and the respective engaged portions 142 are formed in the respective insertion grooves S. .

  Thus, when the assembling member 3 is inserted into the through hole 211 and fitted into the protruding shaft 112, each engaging member 33 is inserted into each insertion groove S, and the stopper 32 is fixed to the stopper 2111. Stop it. Further, the engaging bodies 331 of the engaging members 33 engage with the engaged portions 142, respectively. And the contact | stop direction of the contact | abutting part 32 is a reverse direction to the engagement direction of each engaging body 331. As shown in FIG. Thus, the rotor 21 is regulated and maintained so as to be rotatably fitted to the protruding shaft 112.

  The float member 4 includes a float 41 and a connecting rod 42 connected to the float 41. The connecting rod 42 is provided on the rotary member 2 and has a guide portion 421. Specifically, the rotor 21 is provided with a plurality of holding parts 215, and the connecting rod 42 is held by the holding parts 215. In addition, a guide groove 143 is formed in the housing 14, and the rotor 21 further includes an eccentric portion 213. As a result, the guide portion 421 extends into the guide groove 143 via the eccentric portion 213 and is regulated, so that the effect of regulating the rotation angle of the rotary member 2 is exerted. Needless to say, by changing the length of the guide groove 143, it is possible to have a corresponding rotation angle.

  As a point to be described, the plurality of holding parts 215 are respectively located at two positions facing the through hole 211. Thereby, since the connecting rod 42 held by each holding portion 215 just crosses the through hole 211 (see FIGS. 2 and 3), when the assembling member 3 is held in the through hole 211, the assembling member 3 It becomes impossible to go out in the leaving direction (the direction in which the assembling member 3 comes out).

  Further, as shown in FIG. 6, in the back surface of the insulating carrier 11, a plurality of terminal slots 113 communicating with the insertion and removal plug 111 are opened, and an embedding hole 114 recessed corresponding to the protruding shaft 112. Is open. The connection terminal group 12 is provided on the back surface of the insulating carrier 11 and includes a plurality of connection terminals 121 juxtaposed with each other at intervals. Each connection terminal 121 is inserted into each terminal slot 113 and extends into the insertion and removal plug 111. Further, the magnetic induction member 13 is embedded in the embedding hole 114. A plurality of insertion holes 1211 are formed in the connection terminal group 12. The magnetic induction member 13 has a plurality of leads 131, and each lead 131 is hooked or inserted into each insertion hole 1211 to be electrically connected to each connection terminal 121.

  As described above, the present invention has the following advantages over the prior art. That is, by adding the plug-in / out plug 111, the connector of the signal line group may be connected to the plug-in / out plug only when necessary, and when it is not necessary to connect the signal line group. As a result, the overall volume can be reduced, the wiring can be eliminated, and the effect of eliminating clutter is obtained. Since the insertion and removal plug 111 is formed in the insulating carrier 11 itself, a structural strength sufficient to withstand insertion and removal is provided between the insertion and removal plug 111 and the insulating carrier 11. In particular, in the case of a lapping housing in which the housing 14 for fixing to the container is an injection-molded, the entire stationary member 1 has a structural strength sufficient to withstand insertion and removal.

  Besides, in the present invention, as another effect, since the insertion and removal plug 111 and the connector are separated from the liquid in the container, problems such as short circuit, rust and corrosion can be avoided. Further, the projecting ring 141 and the ring recessed groove 212 allow the rotor 21 to be strictly rotated around the projecting shaft 112. That is, since the two magnets 22 can be precisely rotated around the magnetic induction member 13, accurate magnetic induction results can be obtained. Further, the assembly member 3 can easily regulate and maintain the rotor 21 so as to be rotatably fitted to the projecting shaft 112.

  The above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto. Changes in the equivalent structure made using the contents of the specification and drawings of the present invention are all included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Stationary member 11 Insulating carrier 111 Insertion / extraction plug 112 Protruding shaft 113 Terminal slot 114 Bury hole 12 Connection terminal group 121 Connection terminal 1211 Insertion hole 13 Magnetic induction member 131 Lead 14 Housing 141 Protruding ring 142 Engaged part 143 Guide groove 144 Fixing portion 2 Rotating member 21 Rotor 211 Through hole 2111 Abutment portion 212 Ring recessed groove 213 Eccentric portion 214 Installation position 215 Clamping portion 22 Magnet 3 Assembly member 31 Fitting ring 32 Touching portion 33 Engagement member 331 Engagement body DESCRIPTION OF SYMBOLS 4 float member 41 float 42 connecting rod 421 guide part S insertion groove

Claims (11)

It is a liquid level detection device provided with an insertion and removal plug,
The insulating carrier, the connection terminal group, and the magnetic induction member, wherein the insertion and removal plug and the protruding shaft are formed in the insulating carrier, the magnetic induction member is embedded in the protruding shaft, and the connection terminal group is the magnetic A stationary member which is electrically connected to the guiding member and extends and retracts with respect to the plug.
A rotating member including a rotor and at least one magnet disposed in the rotor, the rotor rotatably fitted to the projecting shaft, and the rotating member provided on the rotating member A liquid level detection device including: a float member that makes it rotatable relative to the stationary member.   The magnetic induction member has a plurality of leads, and the connection terminal group includes a plurality of connection terminals, and each of the leads is provided with the insertion and removal plug according to claim 1 hooked or inserted into each of the connection terminals. Liquid level detection device.   The inserting and removing plug according to claim 1, wherein the stationary member further includes a housing, the insulating carrier and the connecting terminal group are both provided in the housing, and the inserting and removing plug and the projecting shaft are exposed from the housing. Liquid level detection device provided with   The housing is formed with a projecting ring surrounding the projecting shaft, and the rotor has a through hole corresponding to the projecting shaft and a ring groove corresponding to the projecting ring. The liquid level according to claim 3, wherein the rotor is rotatably fitted to the projecting shaft by the through hole, and the projecting ring is fitted to the ring groove. Detection device.   The float member includes a float and a connecting rod connected to the float, the connecting rod is provided on the rotary member and has a guide portion, and the housing has a guide groove formed therein. The liquid level detection device according to claim 3, wherein the part is restricted by extending into the guide groove.   The liquid level detection device according to claim 3, wherein the housing is an injection-molded lapping housing, and the injection-molded lapping housing covers the insulating carrier and the connection terminal group.   The liquid level according to claim 1, further comprising: a mounting member, wherein the rotor is regulated and maintained by the mounting member so as to be rotatably fitted to the projecting shaft. Detection device.   A through hole is opened in the rotor, the projecting shaft is inserted to the position of the through hole, and the assembling member is fitted to the projecting shaft through the through hole, and the rotating member The liquid level detection device provided with the insertion / removal plug according to claim 7, which regulates between the two and the stationary member.   The assembling member has a stopper and a plurality of engaging members, and a stopper is provided at a position corresponding to the through hole in the rotor, and the stationary member is provided with the protrusion A plurality of engaged parts arranged corresponding to the shaft are formed, the contact parts engage with the contact parts, and the engagement members are engaged with the engaged parts. The liquid level detection apparatus provided with the insertion / extraction plug of Claim 8 fitted.   The assembly member further includes a fitting ring, the stopper is formed at one end of the fitting ring, and the plurality of engagement members are a plurality of resilient engagements formed at the other end of the fitting ring. The arm is an arm, and each of the resilient engagement arms is provided with an engagement body that engages with each of the engaged portions, and the contact stop direction of the contact stop portion is opposite to the engagement direction of each of the engagement bodies. The liquid level detection apparatus provided with the insertion / extraction plug of Claim 9.   8. The float member according to claim 7, wherein the float member includes a float and a connecting rod connected to the float, and the connecting rod is mounted on the rotor and held in the direction of withdrawal of the assembling member. Liquid level detection device equipped with an insertion and removal plug