JP4423572B2 - Signal indicator unit and signal indicator - Google Patents

Description

  The present invention is a signal indicator lamp unit installed in an automatic machine, a production line, a parking lot, a dangerous place, etc., for signaling various conditions such as lack of materials, clogged work, full vehicle, danger, and the like, and It relates to signal indicators.

  Some conventional signal indicator lamps are configured by overlapping a plurality of units, for example. The above-mentioned unit has a cylindrical case and a plate-like terminal extending in the axial direction of the case, the units corresponding to each other are stacked, the corresponding terminals are brought into contact with each other and electrically connected, There is one in which a long fixing screw is passed through each unit and the units are fixed using the fixing screw passed through the unit (for example, see Patent Documents 1 and 2).

In addition, a conventional signal indicator unit has a cylindrical case and a linear terminal that extends in the axial direction of the case and bends at one end. There is also a case where the linear terminals are brought into contact with each other in an intersecting manner while being coupled together by rotating (for example, see Patent Document 3).
JP-A-7-282605 JP 2000-82846 A US Pat. No. 5,952,915

In the signal indicators described in Patent Documents 1 and 2, for example, in order to pass a fixing screw through each unit at the time of assembly, it is necessary to hold each unit in a connected state by hand. Take it.
Further, in the signal indicator described in Patent Document 3, the corresponding pair of linear terminals of the pair of units coupled to each other are in point contact with each other, and thus the electrical connection between the units becomes uncertain. There is a fear.

  Accordingly, an object of the present invention is to provide a signal indicator lamp unit and a signal indicator lamp that solve the above-mentioned technical problems, do not require time and effort to assemble the units, and can be reliably connected electrically. That is.

  According to a first aspect of the present invention, there is provided a signal indicator lamp unit comprising: a cylindrical case having first and second ends; and a first case and a first case of the case. A pair of connecting means, each provided at the second end for connecting to the corresponding end of the case of the corresponding unit by relative rotation, and the corresponding unit extending between the first and second ends of the case An electrical connection member for electrically connecting the first and second ends of the electrical connection member to the corresponding terminal portions of the corresponding unit. 2 terminal portions are provided, and at least one of the first and second terminal portions includes a contact portion that can be elastically brought into line contact or surface contact with the corresponding terminal portion of the corresponding unit. At the first end of An annular flange is provided, and the electrical connection member is made of a conductive plate member. The plate member extends in the axial direction of the case and is held substantially orthogonally from one end of the main portion. An extension portion extending along the surface of the annular flange and an elastic tongue piece extending in the other end of the main body portion and forming a mountain shape, the extension portion constituting the first terminal portion, The elastic tongue piece constitutes a second terminal portion, and the corresponding first terminal portion of the corresponding unit can be elastically biased in the axial direction of the case.

  According to the present invention, when the signal indicator lamp is assembled, the case of the unit and the case of the corresponding unit are stacked and rotated relative to each other, so that the units can be easily connected. In addition, the first and second terminal portions corresponding to each other of the present unit and the corresponding unit can be reliably connected electrically by line contact or surface contact.

  Further, when the case of the unit and the corresponding unit are stacked, the second terminal portion constituted by the elastic tongue piece is biased to the first terminal portion received on the annular flange, and both terminals The parts can be electrically connected reliably.

  According to a second aspect of the present invention, at least a part of the signal indicator lamp according to the present invention is formed by stacking the signal indicator lamp units according to the first aspect. According to this invention, the signal indicator lamp which can obtain the effect of Claim 1 is realizable.

Hereinafter, a signal indicator lamp according to an embodiment and a reference example of the present invention and a unit for the same will be described with reference to the drawings. The assembly explanatory drawing of FIG. 1 is referred. First, a reference example on which the embodiment is based will be described.
The signal indicator lamp 1 includes a cover 2 arranged at the top of the signal indicator lamp 1 and a plurality of, for example, six units 3a, 3b, 3c, 5, 6, and 7 connected to each other along the unit stacking direction S. Laminated and locked together. Each unit 3a, 3b, 3c, 5, 6, and 7 has a substantially cylindrical shape, and their axes are connected to each other.

  Specifically, each of the units 3a, 3b, and 3c is a display unit that emits light and displays a signal, and is similarly configured. The unit 5 is a buzzer unit that emits an audio signal. The unit 6 is an external output unit for outputting a signal corresponding to a signal from an apparatus main body 9 (only part of which is shown) to which the signal indicator lamp 1 is mounted so that the signal can be used by an external apparatus (not shown). . The unit 7 is a base unit disposed near the base end of the signal indicator lamp 1. An attachment member 8 for attaching the signal indicator lamp 1 to the apparatus main body 9 is provided at the end of the unit 7.

Below, it demonstrates centering on the unit 3b, and demonstrates according to the case where this unit 3b is connected with the corresponding units 3a and 3c, respectively.
With reference to FIG. 2 and FIG. 3, the unit 3 b has a cylindrical case 11. The unit 3b includes a light source 12 composed of a plurality of, for example, eight LEDs that can emit light, a circuit board 13 that is supported by the case 11 and supports the light source 12, and the corresponding units 3a and 3c. A plurality of electrical connection members 14 (two are shown in FIGS. 2 and 3) for electrical connection. The light source 12, the circuit board 13, and the electrical connection member 14 are generally accommodated in the case 11.

In the first reference example, the electrical connection member 14 includes a plate member 15 as a first member and a wire 16 as a second member that can be connected to each other. The plate member 15 and the wire 16 are provided with a plurality of sets, for example, six sets. The plate member 15 is formed of a metal member as a conductor and is assembled to the circuit board 13. The wire 16 is made of a metal member as a conductor and is held by the case 11.
The case 11 is made of a translucent glove and functions as a signal display surface. The globe may be provided with a lens portion (not shown) as a diffusion means for diffusing transmitted light.

  Referring to FIG. 2, with respect to the axial direction U of the case 11, the first end 18 of the case 11 includes a first fitting portion 18 a provided on the outer periphery and a connecting surface 18 b formed of an annular stepped portion. Have. The second end portion 19 of the case 11 has a second fitting portion 19a provided on the inner periphery thereof, and a connecting surface 19b formed of an annular step portion. The first fitting portion 18a of the unit 3b is fitted with the corresponding second fitting portion 19a of the corresponding unit 3a. The second fitting portion 19a of the display unit 3b is fitted with the corresponding first fitting portion 18a of the corresponding unit 3c. The corresponding connecting surfaces 19b and 18b of the two corresponding units 3b and 3c are brought into contact with each other, and the cases 11 can be positioned in the axial direction U to guide the relative rotation.

The first and second end portions 18 and 19 of the case 11 are engaged as a pair of connecting means for connecting to the corresponding end portions 19 and 18 of the case 11 of the corresponding units 3a and 3c by relative rotation. A protrusion 20 and an engaging recess 21 are provided.
The engagement protrusion 20 of the unit 3b is provided in the first fitting portion 18a and engages with the engagement recess 21 of the corresponding unit 3a. Further, the engagement recess 21 of the unit 3b is provided in the second fitting portion 19a and engages with the engagement protrusion 20 of the corresponding unit 3c.

  The engaging recess 21 has an inlet 21a opened at one end and extends along the axial direction U as a guide groove 21b, and extends from the other end of the guide groove 21b along the circumferential direction T. And a locking groove 21c as a locking portion for locking the mating protrusion 20. After the mating engagement protrusion 20 introduced through the inlet 21a is guided in the axial direction U by the guide groove 21b, it engages with the peripheral portion of the locking groove 21c while being guided in the circumferential direction by the locking groove 21c. The cases 11 of the units 3b and 3c are locked with each other so that their removal in the axial direction U is prevented.

Referring to FIGS. 2 and 3, an annular flange 22 for receiving circuit board 13 is provided on the inner periphery of first end portion 18 of case 11. A plurality of bosses 23 are formed on the annular flange 22 (only one is shown in the figure). The circuit board 13 is fixed to the annular flange 22 by screwing a fixing screw 25 inserted through the circuit board 13 into a screw hole (not shown) provided in the boss 23.
The circuit board 13 is formed in a substantially disc shape. The circuit board 13 holds the above-described light source 12 as signal generating means for generating a signal by light, a plurality of circuit components (not shown), and a plate member 15 of the electrical connection member 14. The circuit board 13, the light source 12, the above-described circuit component, and the plate member 15 are electrically connected to each other.

On the outer peripheral edge of the circuit board 13, a plurality of, for example, eight LEDs as the light source 12 are arranged substantially evenly in the circumferential direction. Each LED is disposed toward the center of the case 11 when viewed from the axial direction U of the case 11, and the direct light from each LED passes through the center of the case 11 and faces each LED on the opposite side of the case 11. Is transmitted to the surrounding area and emitted to the surroundings.
Further, referring to FIG. 3, the circuit board 13, the light source 12, the plate member 15 of the electrical connection member 14, the circuit components, etc. constitute a sub-assembly 26, and are grouped together at the time of assembly into the case 11. Incorporated. The subassembly 26 and the wire 16 are both assembled to the case 11 from the first end portion 18 side.

The electrical connection member 14 is disposed in the vicinity of the inner periphery of the case 11 with reference to FIG. When viewed from the axial direction U of the case 11, the electrical connection members 14 are arranged with a predetermined interval in the circumferential direction V between them. Each electrical connection member 14 is disposed at a position where light emitted from each light source 12 along the radial directions R1 and R2 of the case 11 is not blocked.
The electrical connection member 14 is disposed adjacent to the axial direction U of the case 11 in a state where the plate member 15 and the wire 16 are electrically connected to each other. The electrical connection member 14 extends between the first and second end portions 18 and 19 of the case 11. Corresponding to the first and second end portions 18 and 19 of the case 11, the first and second end portions 28 and 29 of the electrical connection member 14 are arranged, respectively. First and second terminal portions 31 and 32 for connecting to the corresponding terminal portions 32 and 31 of the corresponding units 3a and 3c are respectively connected to the first and second end portions 28 and 29 of the electrical connecting member 14. Each is provided.

  The plate member 15 of the electrical connection member 14 is disposed closer to the first end portion 28 of the electrical connection member 14 than the wire 16. Referring to FIG. 3, with respect to the axial direction U of case 11, plate member 15 has one end 15e, the other end 15f, and an intermediate portion 15g. One end 15 e of the plate member 15 has the first terminal portion 31 described above, and the other end 15 f of the plate member 15 has a first internal terminal portion 71 for connection to the wire 16. The one end 75 of the wire 16 has a second internal terminal portion 72 for connecting to the first internal terminal portion 71 of the plate member 15. The other end 76 of the wire 16 has the second terminal portion 32 described above.

  With reference to FIG. 4, the intermediate portion 15 g of the plate member 15 has a U-shaped plate portion 33 as a held portion held by the circuit board 13. The U-shaped plate portion 33 has a pair of elastic plate portions 43 and 44 as cantilevered plate spring members whose one ends are connected to each other by a connecting portion 45. Further, the intermediate portion 15 g of the plate member 15 includes a pair of protrusions 38 as positioning engaging portions extending from the elastic plate portion 43 of the U-shaped plate portion 33 and an elastic plate of the U-shaped plate portion 33. It has a projecting lead 39 that extends from the portion 43 and serves as a connection portion with the circuit board 13.

One end 15 e of the plate member 15 includes an extended portion 34 extending in a bent shape from an end portion of the elastic plate portion 43 of the U-shaped plate portion 33, and a first elastic extending further from the extended portion 34. And a tongue piece 35. The other end 15 f of the plate member 15 has a second elastic tongue piece 36 extending from the elastic plate portion 44 of the U-shaped plate portion 33. Each part 33, 35, 36, 38, 39, 34 of these plate members 15 is integrally formed by a single member.
The first elastic tongue piece 35 is formed in a folded shape from the side edge of the extended portion 34 and faces the extended portion 34. The first elastic tongue piece 35 has a base end portion 35 a at the side edge of the extending portion 34, and extends in the circumferential direction V of the case 11 from the base end portion 35 a. The first elastic tongue piece 35 functions as a cantilevered leaf spring member, and has a first terminal portion 31 in a portion closer to the free end from the middle portion of the leaf spring member. The 1st terminal part 31 is comprised by a part of 1st elastic tongue piece 35 which consists of a plate member. As shown in FIG. 5A and FIG. 5B, the first terminal portion 31 is a contact portion that can be elastically brought into line contact with the contact portion 42 b of the second terminal portion 32 of the corresponding wire 16 of the corresponding unit 3 a. 42a is included.

The first elastic tongue piece 35 is disposed so that the plate surface of the leaf spring member intersects with the generally radial directions R1 and R2 of the case 11, and is elastically deformable along the generally radial directions R1 and R2 of the case 11. The first terminal portion 31 can be elastically biased along the directions R1 and R2.
6A and 6B, when the case 11 of the unit 3b and the case 11 of the corresponding unit 3a are stacked in the axial direction U and relatively rotated, the second of the corresponding unit 3a The terminal portion 32 pushes and bends the first elastic tongue piece 35 while moving from the base end portion 35a side to the free end side of the first elastic tongue piece 35 of the unit 3b (arrow M2). Due to the biasing force in the radial direction R1 of the first elastic tongue piece 35, the corresponding first and second terminal portions 31, 32 of the corresponding units 3b, 3a can be electrically connected reliably. In this state, the contact portions 42a and 42b of the corresponding both terminal portions 31 and 32 are in line contact.

Referring to FIG. 4 again, the U-shaped plate portion 33 defines an insertion portion 64 into which the outer edge portion 63 of the circuit board 13 can be inserted between the pair of elastic plate portions 43 and 44. The U-shaped plate portion 33 is securely held by the circuit board 13 in a state where the pair of elastic plate portions 43 and 44 sandwich the outer edge portion 63 of the inserted circuit board 13.
The circuit board 13 accommodates the connecting portion 45 of the U-shaped plate portion 33 and has a substantially rectangular cutout portion 62 opened to the outer periphery, the outer edge portion 63 as a holding portion for holding the plate member 15, and a plate member 15 includes a positioning groove 65 as a pair of positioning portions for positioning 15 in the radial direction R2 and the circumferential direction V of the case 11, and a connecting portion 66 that is soldered and electrically connected to the lead 39 of the plate member 15.

  The positioning groove 65 extends from the notch 62 in the radially inward direction R2. The protrusion 38 of the plate member 15 is fitted into the positioning groove 65, the plate member 15 is positioned on the circuit board 13, and the displacement of the plate member 15 with respect to the circumferential direction V and the radial inner direction R2 with respect to the circuit board 13 is changed. Be regulated. In addition, since the external force acting on the plate member 15 is received by the circuit board 13 through the protrusions 38, it is possible to prevent an excessive force from being applied to the soldered portion 66a (see FIG. 6) between the lead 39 and the connecting portion 66.

  The second elastic tongue piece 36 is folded back from the end of the elastic plate portion 44 of the U-shaped plate portion 33 and faces the elastic plate portion 44. The second elastic tongue piece 36 has a base end portion 36 a at the end of the elastic plate portion 44, and extends in the radial direction R <b> 1 of the case 11 from the base end portion 36 a. The second elastic tongue piece 36 is constituted by a plate member and functions as a cantilevered plate spring member. The second elastic tongue piece 36 has the first internal terminal portion 71 described above from the middle portion of the plate spring member toward the free end. . The second elastic tongue piece 36 is disposed so that the plate surface of the leaf spring member substantially intersects the axial direction U of the case 11, and the first internal terminal portion 71 is arranged along the substantially axial direction U of the case 11. As a result, one end 75 of the wire 16 can be elastically biased.

Referring to FIG. 3, the wire 16 includes a main body portion 73 that extends straight in the axial direction U of the case 11 and is held by the case 11. A bent extending portion provided at one end 77 of the main body portion 73 constitutes the second internal terminal portion 72. The other end of the main body 73 constitutes the second terminal portion 32.
A part of the electrical connection member 14 can be formed at low cost by using the bent wire 16. Further, the second internal terminal portion 72 constituted by the bent extending portion of the wire 16 is in line contact with the first internal terminal portion 71 of the second elastic tongue piece 36 of the plate member 15 to be electrically connected. Is certain.

With reference to FIG. 2, the wire 16 is held in a holding hole 80 as a holding portion provided on the inner periphery of the case 11. The holding hole 80 is a through hole that extends straight in the axial direction U of the case 11 and accommodates most of the main body 73.
5A and 5B, the second internal terminal portion 72 extends along the circumferential direction V of the case 11 in an exposed state from the opening of the holding hole 80 on the first end 18 side of the case 11. put out. The second terminal portion 32 extends in the axial direction U of the case 11 in an exposed state from the opening of the holding hole 80 on the second end 19 side of the case 11.

  A receiving portion 81 that receives the second internal terminal portion 72 in the axial direction U of the case 11 is provided at the peripheral portion of the opening of the holding hole 80 on the first end portion 18 side of the case 11. The first internal terminal portion 71 of the second elastic tongue piece 36 of the subassembly 26 incorporated in the case 11 is connected to the second internal terminal portion 72 of the wire 16 received by the receiving portion 81. The first and second internal terminal portions 71 and 72 can be electrically and reliably connected to each other by the biasing force in the direction U.

  In the first reference example, when the signal indicator lamp 1 is assembled, the case 11 of the unit 3b and the case 11 of the corresponding units 3a and 3c are stacked and relatively rotated, so that a long fixing screw conventionally used is used. The units 3a, 3b, and 3c can be easily connected to each other by using the above-described connecting means without using. As a result, it is not necessary to assemble the signal indicator lamp 1. Further, the first terminal portion 31 of the plate member 15 of the electrical connecting member 14 corresponding to each other and the second terminal portion 32 of the wire 16 are in line contact and are electrically connected reliably.

Referring to FIG. 3, the electrical connection member 14 is divided into a plurality of members that can be connected to each other, more preferably two members. Thereby, the freedom degree of the assembly of this unit 3b increases, and this unit 3b can be assembled easily. Moreover, if it is divided | segmented into 2 pieces, the increase in the effort of an assembly can be suppressed.
By assembling the subassembly 26 assembled in advance using the circuit board 13 and the plate member 15 to the case 11, the unit 3b can be more easily assembled. More preferably, the subassembly 26 includes signal generating means.

Referring to FIG. 4, the plate member 15 of the electrical connection member 14 includes first and second elastic tongue pieces 35 and 36 extending from the U-shaped plate portion 33 as a held portion. The plate member 15 can be configured practically simply.
With reference to FIGS. 5A and 5B, the first internal terminal portion 71 is provided on the second elastic tongue piece 36, whereby the first and second internal terminal portions 71 and 72 are elastically moved in the unit 3b. It can be securely connected electrically.

The second elastic tongue piece 36 can elastically urge the first internal terminal portion 71 along the substantially axial direction U of the case 11, and the sub-assembly 26 is arranged along the substantially axial direction U of the case 11. When assembled to the first end portion 18, the assembly of the subassembly 26 to the case 11 and the connection in the biased state of the first and second internal terminal portions 71 and 72 are achieved at the same time. The
Note that the lead 39 and the connection portion 66 are soldered. However, in the case where the leads 39 and the connection portion 66 are brought into contact with each other by the elasticity of the U-shaped plate portion 33, the soldering may be omitted.

Next, a second reference example of the present invention will be described. In the following description, differences from the first reference example described above will be mainly described, and the description of the same configuration will be omitted and the same reference numerals will be given. The same applies to other reference examples and embodiments described later.
In the second reference example, a plate member 15a shown in FIGS. 7 and 8 is used instead of the plate member 15 (see FIG. 4) of the first reference example.
The plate member 15a differs from the plate member 15 of the first reference example (see FIG. 4) mainly in the following points. That is, the extended portion 34 of the plate member 15 a extends in a bent shape from the side edge of the elastic plate portion 43 of the U-shaped plate portion 33, and the first elastic tongue piece 35 is the side edge of the extended portion 34. The case 11 is further extended in the circumferential direction V in a bent shape. The lead 39 of the plate member 15 a protrudes from the extending portion 34 along the axial direction U of the case 11, is fitted into a connection portion 66 including an insertion hole of the circuit board 13, and is electrically connected to a conductive member and solder provided in the insertion hole. Attached. Further, the connecting portion 45 of the U-shaped plate portion 33 is fitted into the cutout portion 62 on the outer periphery of the circuit board 13, and functions as an engaging portion for positioning the plate member 15 a on the circuit board 13 in the circumferential direction V.

In the third reference example, a plate member 15b shown in FIG. 9 is used instead of the plate member 15 (see FIG. 4) of the first reference example. The circuit board 13 has an insertion hole 68 as a holding portion for inserting and holding the plate member 15b. The insertion hole 68 includes a first portion 68a as a rectangular main portion, and a groove-shaped second portion 68b extending in the circumferential direction V from the first portion 68a.
The plate member 15b has one end 15e, the other end 15f, and an intermediate portion 15g with respect to the axial direction U of the case 11. The plate member 15 b has a main plate portion 84 that is fitted and held in the first portion 68 a of the insertion hole 68 of the circuit board 13 and extends in the axial direction U of the case 11. An intermediate portion of the main plate portion 84 becomes a held portion that is held by the circuit board 13. Further, one end 15e of the plate member 15b has a first elastic tongue piece 35 extending in a bent shape from the side edge of the main plate portion 84. Further, the other end 15 f of the plate member 15 b has a second elastic tongue piece 36 extending from the end portion of the main plate portion 84 in a folded shape. Further, the plate member 15b extends in a bent shape from the side edge of the main plate portion 84 as a held portion to the side where the second elastic tongue piece 36 is folded back, and extends corresponding to the second elastic tongue piece 36. And a set piece 85. An intermediate portion of the extending piece 85 is fitted into the second portion 68b of the insertion hole 68 and functions as a held portion. In the plate member 15b, although not shown, the lead 39 described in the first and second reference examples can be used.

In the plate member 15b, the main plate portion 84 and the stepped portions 84a and 85b of the extending piece 85 extend along the peripheral edge portion of the insertion hole 68 of the circuit board 13, thereby connecting the plate member 15b and the circuit board 13 in the axial direction U. Position on one side. The intermediate portion of the main plate portion 84 and the extending piece 85 contacts the peripheral portion of the insertion hole 68 to position the circuit board 13 and the plate member 15b in the circumferential direction V and the radial directions R1 and R2 of the case 11.
Also in the third reference example, the first elastic tongue piece 35 includes the first terminal portion 31, and the second elastic tongue piece 36 includes the first internal terminal portion 71.

About the 1st elastic tongue piece 35, this is extended in the bent form from the base end part 35a provided in the side edge of the main-body board part 84, and the groove 86 is provided in the 1st terminal part 31. In this point, the third reference example and the first reference example are different.
The recess 86 can be in line contact with the corresponding second terminal portion 32 at a plurality of locations. Thereby, the 1st terminal part 31 and the 2nd terminal part 32 can be connected still more electrically electrically. For example, as shown in FIG. 11, the concave line 86 is in line contact with the wire 16 at two locations separated in the circumferential direction thereof.

  Referring to FIG. 9 again, the second elastic tongue piece 36 differs from the third reference example and the first reference example in the following points. In other words, the second elastic tongue piece 36 has a base end portion 36 a at the end portion of the main plate 84, and extends from the base end portion 36 a in a folded shape substantially along the axial direction U of the case 11. . Further, the plate surface of the second elastic tongue piece 36 is arranged so as to intersect with the substantially circumferential direction V of the case 11, and the first internal terminal portion 71 can be elastically biased along the substantially circumferential direction V of the case 11. It is a point. As shown in FIGS. 10A and 10B, the first and second internal terminal portions 71 and 72 are in line contact with each other while being biased. The second internal terminal portion 72 of the wire 16 is disposed so as to extend along the radial direction R2 of the case 11. Thereby, it is possible to prevent light from the light source 12 from being blocked while securing the contact length between the first and second internal terminal portions 71 and 72.

  The extending piece 85 has an edge portion 85 b extending along the axial direction U of the case 11. Between the edge portion 85b of the extending piece 85 and the second elastic tongue piece 36, a holding portion 87 capable of holding the second internal terminal portion 72 of the wire 16 of the unit 3b is defined. Thereby, the wire 16 can be reliably positioned and held in a biased state, and the extending piece 85 and the second internal terminal portion 72 can be electrically connected. As a result, the plate member 15b and the wire 16 can be electrically and reliably connected. Further, since the plate member 15b clamps the wire 16 in the circumferential direction V of the case 11, it is possible to prevent the plate member 15b and the circuit board 13 from being applied with a force in the axial direction U of the case 11 from the wire 16.

  In the present embodiment, an electrical connection member 14a shown in FIGS. 12 and 13 is used instead of the electrical connection member 14 (see FIG. 2) of the first reference example. In the case 11 of the present embodiment, an inward annular flange 90 is provided at the first end 18 of the case 11 and the circuit board 13 is inserted from the second end 19 side of the case 11. The case 11 is different from the case 11 of the first reference example in that a boss 23a provided on the inner periphery with a screw hole to be locked by the fixing screw 25 is provided.

The electrical connection member 14a includes first and second terminal portions 31a and 32a in place of the above-described first and second terminal portions 31 and 32 (see FIG. 2). The 1st and 2nd terminal parts 31a and 32a have the above-mentioned contact parts 42a and 42b (refer to Drawing 10A), respectively. The electrical connection member 14a is formed of a single conductive plate member that integrally forms both terminal portions 31a and 32a.
The plate member has a main body portion 94 that extends in the axial direction U of the case 11 and is held by the case 11. An extending portion made of a plate member extending substantially orthogonally from one end 95 of the main body portion 94 constitutes the first terminal portion 31a. The first terminal portion 31 a of the unit 3 b is along the surface 91 that faces the outside of the annular flange 90. Further, an elastic tongue piece made of a plate member extending in the other end 96 of the main body portion 94 and forming a mountain shape constitutes the second terminal portion 32a. The electrical connection member 14 a is extended to the projecting lead 39 for connecting to the connection portion 66 formed by the insertion hole of the circuit board 13 and the other end 96 of the main body portion 94, and is engaged with the holding hole 80 of the case 11. And a projection 99 as a mating engagement portion. The plate surface of the main body portion 94 is disposed so as to intersect the radial directions R1 and R2 of the case 11.

Referring to FIGS. 14A and 14B, the first terminal portion 31 a is disposed in the recess 92 of the annular flange 90. The surface 91 of the annular flange 90 adjacent to the recess 92 in the circumferential direction V of the case 11 and the first terminal portion 31a form a substantially single surface.
The elastic tongue piece constituting the second terminal portion 32a functions as a leaf spring member supported by the main body portion 94 in a cantilever manner. The second terminal portion 32 a of the unit 3 a can elastically bias the corresponding first terminal portion 31 a of the corresponding unit 3 b in the axial direction U of the case 11.

In a state where the units 3a and 3b corresponding to each other are stacked, the second terminal portion 32a bends by a predetermined amount. The second terminal portion 32a is biased to the first terminal portion 31a received on the annular flange 90 by a predetermined elastic force generated thereby, and the contact portion 42b and the first terminal at the top of the chevron The contact part 42a of the part 31a makes line contact.
In each of the second and third reference examples and embodiments, the cases 11 can be relatively rotated to easily connect the units, and the corresponding first and second terminals of the corresponding units 3a, 3b, 3c. The units 31, 31 a, 32, and 32 a are brought into line contact, and the corresponding units 3 a, 3 b, and 3 c can be electrically connected to each other reliably.

In the second and third reference examples, an effect of increasing the degree of freedom of assembly by dividing the electrical connection member 14 into a plurality of members and an effect of facilitating assembly by the subassembly 26 can be obtained. In addition, in each reference example and embodiment, when the configuration corresponding to the effect described in the first reference example is provided, the effect can be obtained.
15A and 15B, the first elastic tongue piece 35 of the first reference example extends along the direction in which the first elastic tongue piece 35 extends, and the back side of the contact portion of the first terminal portion 31. The first elastic tongue 35 may be reinforced by providing at least one rib 100 for reinforcement, for example, three ribs 100. The rib 100 may be applied to another elastic tongue piece of the first reference example, and the elastic tongue pieces of the second and third reference examples and embodiments.

The recess 86 shown in FIG. 11 may be applied to the first terminal portion 31 of the first and second reference examples and to the first terminal portion 31a of the embodiment.
In the first to third reference examples and embodiments, the corresponding contact portions 42a and 42b may be in surface contact with each other.
As shown in FIG. 16, in addition to the light source 12, the signal generating means includes a reflecting surface 113 as reflecting means for reflecting light from the light source 12 to the surroundings, and a carrier that carries the reflecting surface 113. 114 may be provided. Further, like the buzzer unit 5 shown in FIG. 1, instead of the light source 12 as a signal generating means, a buzzer 101 as a sound generating means for generating a signal by sound, and an electric circuit (not shown) for driving the buzzer 101 ) May be used. The case 11 in this case is provided with an opening 102 for emitting the sound from the buzzer 101 to the outside.

  Further, the units 6 and 7 shown in FIG. 1 also use the case 11 of each of the above-described reference examples and embodiments and the electrical connection members 14 and 14a. For example, the external output unit 6 includes an interface 117 for external output, and an output signal corresponding to a signal from the device main body 9 to which the signal indicator lamp 1 is attached is sent to the external device, for example, the device. The data can be output to the overall control unit of the production line including the main body 9. Further, the external output unit 6 has a connector 118 for taking out an output signal and fixed to the case 11 so as to be exposed to the outside.

  Further, the number and types of various units included in the signal indicator lamp 1 are not limited to the above-described configuration, and in short, it is sufficient that at least one display unit 3b is provided. In addition, various modifications can be made within the scope of the claims of the present invention.

It is explanatory drawing of the assembly of the signal indicator lamp of the 1st reference example of this invention, FIG. 1A is an exploded front view of a signal indicator lamp, and FIG. 1B is a front view of the assembled signal indicator lamp. It is a partial cross section front view of the display unit shown in FIG. It is an exploded view of the display unit shown in FIG. 1, and shows the front of a partial cross section. It is a disassembled perspective view of the principal part of the subassembly shown in FIG. 5A is a cross-sectional view showing a connected state of the main part of the display unit shown in FIG. 1, FIG. 5A is a cross-sectional view showing a 5A cross-section shown in FIG. 5B, and FIG. 5B is a cross-sectional view showing a 5B cross-section shown in FIG. It is. It is a partial cross section top view which shows the connection of the 1st and 2nd terminal part of the unit which respond | corresponds mutually, FIG. 6A shows the state before connection between units, FIG. 6B shows a connection completion state, FIG. The VI cross section shown is shown. It is a disassembled perspective view of the principal part of the subassembly of the display unit of the 2nd reference example of the present invention. It is sectional drawing which shows the connection state of the display unit shown in FIG. 7, and shows the cross section corresponded to 5A cross section shown to FIG. 5B. It is a disassembled perspective view of the principal part of the subassembly of the display unit of the 3rd reference example of the present invention. 10A is a cross-sectional view showing a connected state of the display unit shown in FIG. 9, FIG. 10A is a cross-sectional view showing a 10A cross-section shown in FIG. 10B, and FIG. 10B is a cross-sectional view showing a 10B cross-section shown in FIG. It is a partial cross section top view which shows the connection state of the 1st terminal part shown to FIG. 10B, and the 2nd terminal part of a corresponding unit, and shows XI cross section shown to FIG. 10B. It is a partial cross section front view of the display unit of the embodiment of the present invention. It is an exploded view of the display unit shown in FIG. 12, and shows the front of a partial cross section. 14A is a cross-sectional view showing a connected state of the display unit shown in FIG. 12, FIG. 14A is a cross-sectional view showing a 14A cross-section shown in FIG. 14B, and FIG. 14B is a cross-sectional view showing a 14B cross-section shown in FIG. The modification of the 1st terminal part of a 1st reference example is shown, FIG. 15A shows a perspective view, FIG. 15B shows sectional drawing of 15B-15B cross section of FIG. 15A. It is a schematic diagram which shows the modification of the signal display means of the display unit shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Signal indicator lamp 3a, 3b, 3c, 5, 6, 7 Unit 11 Case 14a Electrical connection member 18 Case 1st end 19 Case 2nd end 20 Engagement protrusion (case 1st end Connecting means provided in the part)
21 Engaging recess (connecting means provided at the second end of the case)
28 1st edge part of electrical connection member 29 2nd edge part 31a of electrical connection member 31a 1st terminal part (extension part) of electrical connection member
32a 2nd terminal part (elastic tongue piece) of an electrical connection member
42a, 42b Contact portion 90 annular flange 91 surface of annular flange 94 main part of plate member 95 one end of main part of plate member 96 other end of main part of plate member U axial direction of case

Claims (2)

In units for signal indicators that can be stacked on each other,
A cylindrical case having first and second ends;
A pair of coupling means provided at the first and second ends of the case, respectively, for coupling to the corresponding ends of the case of the corresponding unit by relative rotation;
An electrical connection member extending between the first and second ends of the case for electrically connecting the corresponding units;
First and second terminal portions for connecting to corresponding terminal portions of corresponding units are provided at the first and second end portions of the electrical connection member, respectively.
At least one of the first and second terminal portions includes a contact portion that can be elastically brought into line contact or surface contact with the corresponding terminal portion of the corresponding unit;
An inward annular flange is provided at the first end of the case;
The electrical connection member is made of a conductive plate member, and the plate member extends in the axial direction of the case and is held by the case, and extends substantially orthogonally from one end of the main body to form an annular flange. And an elastic tongue piece extending in the other end of the main body and forming a chevron, wherein the extension part constitutes a first terminal part, and the elastic tongue piece is a second part. A signal indicator unit comprising a terminal part and capable of elastically urging a corresponding first terminal part of the corresponding unit in an axial direction of the case.   A signal indicator lamp, wherein at least a part of the signal indicator lamp unit according to claim 1 is laminated.

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