JP5610810B2 - Snap terminal - Google Patents

Description

The present invention relates to structure of snap terminal.

  Conventionally, various snap terminals connected to electrodes of a dry battery have been proposed (see, for example, Patent Document 1). For example, as shown in FIG. 8, a general snap terminal 101 is electrically connected to a synthetic resin substrate 102, lead plates 103a and 103b arranged on the back side of the substrate 102, and lead plates 103a and 103b. Connected metal terminal members (plus terminal 104 and minus terminal 105) are provided. The plus terminal 104 is crimped to the lead plate 103a by caulking the upper end portion and the lower end portion of the eyelet 106 that penetrates the substrate 102, the plus terminal 104, and the lead plate 103a. Similarly, the minus terminal 105 is crimped to the lead plate 103b by caulking the upper end portion and the lower end portion of the eyelet 107 that penetrates the substrate 102, the minus terminal 105, and the lead plate 103b.

Japanese Utility Model Publication No. 1-20770 (see Fig. 1 etc.)

  However, when caulking of the eyelets 106 and 107 is insufficient, the upper and lower ends of the eyelets 106 and 107 are hardly crushed, so that the outer diameters of the upper and lower ends are not so large. 104 and 105 may fall off. On the other hand, if the eyelets 106 and 107 are too caulked, the upper and lower ends of the eyelets 106 and 107 are too crushed and partly broken, so that the eyelets 106 and 107 are cut while the snap terminal 101 is used. The terminals 104 and 105 may fall off from the 106 and 107. As a result, the terminals 104 and 105 cannot be securely fixed to the substrate 102. Further, since the eyelets 106 and 107 are required to fix the terminals 104 and 105, the number of parts increases, and the product cost increases accordingly.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a snap terminal capable of securely fixing a terminal member to a substrate and reducing the number of components .

Means [1] and [3] to [5] for solving the above problems are listed below.

[1] An insulating substrate, a lead plate disposed on the back side of the substrate, and a metal terminal member electrically connected to the lead plate, the terminal member serving as an electrode of a dry battery A snap terminal to be connected, wherein the terminal member is disposed on a main surface of the substrate, and is formed integrally with a container-like terminal main body into which the electrode can be fitted, and a bottom rear surface side of the terminal main body, A cylindrical projecting portion penetrating the substrate and the lead plate and having a distal end side positioned on the back surface side of the lead plate, and by caulking the projecting portion, the distal end side of the projecting portion is divided into a plurality of divided pieces. The plurality of divided pieces are spread radially in the radial direction of the protrusion, and the length from the center of the protrusion to the tips of the plurality of divided pieces is half the width of the lead plate. Longer than the length of the terminal body and Greater than the diameter, at least one of the tip portions of the divided piece of the plurality of divided pieces are positioned outside the outer peripheral edge of the lead plate, wherein the substrate and the lead plate and the terminal body protrusion The snap terminal is fixed in a state where it is sandwiched between the protrusions, and the tip end side of the protruding portion is deformed to be crimped to the back surface of the lead plate and the back surface of the substrate .

  Therefore, according to the means 1, the cylindrical projection having the same function as the conventional eyelet is integrally formed on the bottom rear surface side of the terminal main body constituting the terminal member. For this reason, even if it is a case where crimping of a projection part is inadequate, or a case where a projection part is crimped too much conversely, a projection part does not isolate | separate from a terminal main body. Therefore, the terminal member can be securely fixed to the substrate. In addition, since the eyelets that have been conventionally used are not necessary, the number of parts can be reduced, and the product cost can be reduced accordingly.

Further , according to the means 1 , since the tip portion of the split piece constituting the projection is positioned outside the outer peripheral edge of the lead plate, the tip side of the projection is not only the back surface of the lead plate but also the substrate. It also comes to crimp on the back side. As a result, the contact area between the divided piece and the lead plate (and the substrate) is increased, so that the terminal member can be more reliably fixed to the substrate.

[3] The terminal member is formed by deep drawing of a metal plate, and a thickness of the metal plate forming the protrusion is thinner than a thickness of the metal plate forming the terminal body. The snap terminal according to the above means 1 .

  Therefore, according to the means 3, since the plate thickness of the metal plate forming the protrusion is relatively thin, the protrusion is easily caulked. In addition, since the metal plate forming the terminal body is relatively thick, the terminal body is less likely to be deformed when the substrate and the lead plate are fixed while being sandwiched between the terminal body and the protrusions. Therefore, the terminal body can be more securely fixed to the substrate.

  [4] An insulating substrate, a lead plate disposed on the back side of the substrate, and a metal terminal member electrically connected to the lead plate, the terminal member serving as an electrode of the dry battery A snap terminal to be connected, wherein the terminal member is disposed on a main surface of the substrate, and is formed integrally with a container-like terminal main body into which the electrode can be fitted, and a bottom rear surface side of the terminal main body, A protrusion that is inserted into a through hole provided in the substrate, the protrusion having a tip surface, and a height from a connection portion with the terminal body to the tip surface is a thickness of the substrate. And the protrusion is welded to the lead plate, whereby the substrate is fixed in a state of being sandwiched between the terminal body and the lead plate, and the front end surface of the protrusion Is crimped to the lead plate Snap pins, wherein the.

  In a general snap terminal, since the terminal main body and the lead plate are separated from each other, some configuration for electrically connecting the terminal main body to the lead plate is required. Therefore, in the means 4, a protrusion having the same function as that of a conventional eyelet is integrally formed on the bottom rear surface side of the terminal body constituting the terminal member, and the protrusion is connected to the lead plate. Since the protrusion is welded to the lead plate, the material constituting the protrusion and the material constituting the lead plate are melted and joined, and the protrusion is securely fixed to the lead plate. Moreover, since the protrusion is integrally formed with the terminal body, the protrusion does not separate from the terminal body. Therefore, the terminal member can be securely fixed to the substrate. Further, since the eyelets that have been used conventionally are no longer necessary, the number of parts can be reduced, and the product cost can be reduced accordingly.

  [5] A terminal member for a snap terminal connected to an electrode of a dry battery, comprising: a container-like terminal main body into which the electrode can be fitted; and a protrusion formed integrally on the bottom back side of the terminal main body. A terminal member for a snap terminal, characterized by comprising:

  Therefore, according to the means 5, since the protrusion having the same function as that of the conventional eyelet is integrally formed on the bottom rear surface side of the terminal body constituting the terminal member, the protrusion does not separate from the terminal body. . Therefore, the terminal member can be securely fixed to the substrate or the like. In addition, since the eyelets that have been conventionally used are not necessary, the number of parts can be reduced, and the product cost can be reduced accordingly.

As described in detail above, according to the first and second aspects of the present invention, it is possible to provide a snap terminal that can securely fix the terminal member to the substrate and reduce the number of components .

In 1st Embodiment, (a) is a top view which shows a snap terminal, (b) is sectional drawing which shows a snap terminal, (c) is a back view which shows a snap terminal. Similarly, (a) is a cross-sectional view showing a state before deformation of the plus terminal, and (b) is a cross-sectional view showing a state before deformation of the minus terminal. Similarly, the top view which shows a board | substrate. Similarly, the top view which shows a lead plate. In 2nd Embodiment, (a) is sectional drawing which shows a snap terminal, (b) is a back view which shows a snap terminal. Similarly, (a) is a sectional view showing a plus terminal, and (b) is a sectional view showing a minus terminal. In other embodiment, (a) is sectional drawing which shows a plus terminal, (b) is sectional drawing which shows a minus terminal. Sectional drawing which shows the snap terminal in a prior art.

[First Embodiment]
Hereinafter, a first embodiment embodying the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the snap terminal 10 of the present embodiment includes a substrate 11 made of an insulating synthetic resin, and metal lead plates 21 and 22 arranged on the back surface 11 b of the substrate 11. ing. The snap terminal 10 includes a metal positive terminal 31 (terminal member) electrically connected to the lead plate 21 and a metal negative terminal 41 (terminal member) electrically connected to the lead plate 22. It has. In the present embodiment, the positive terminal 31 is connected to the positive terminal (electrode) of a square 9V type dry battery (not shown), and the negative terminal 41 is connected to the negative terminal (electrode) of the dry battery. Yes.

  As shown in FIGS. 1 and 2, the plus terminal 31 is formed by deep drawing of a metal plate (thickness 0.2 mm), and includes a terminal body 32 and a protrusion 33. The terminal body 32 is disposed on the main surface 11a of the substrate 11 and has a container shape that opens at the tip. For this reason, the positive electrode terminal of the dry battery can be fitted to the terminal body 32. The terminal main body 32 includes a bottom 34 having a circular shape in contact with the main surface 11 a of the substrate 11 and a cylindrical wall 35 protruding upward from the outer peripheral portion of the bottom 34. The wall 35 has a double structure formed by folding back a metal plate. The base portion of the wall portion 35 has a flange 35a that protrudes in the outer peripheral direction of the terminal main body 32 and abuts against the main surface 11a. On the other hand, the protrusion 33 is integrally formed on the back surface 34a side of the bottom 34 of the terminal main body 32, and has a cylindrical shape before the deformation (see FIG. 2A). Further, the thickness of the metal plate that forms the protrusion 33 is set to be the same as the thickness of the metal plate that forms the terminal body 32, and is set to be thicker than the thickness of the lead plate 21. Note that the length A1 (see FIG. 2A) of the protrusion 33 in the state before deformation is larger than the height H1 of the terminal body 32 (see FIG. 2A). Is set to about 1.2 times the height H1. In addition, the outer diameter of the protrusion 33 in the state before deformation is the inner diameter of the through hole 12 (see FIG. 3) provided in the substrate 11 and the through hole 23 (see FIG. 4) provided in the lead plate 21. It is equal to the inner diameter. The protrusion 33 is inserted through the through holes 12 and 23 so that the tip side is located on the back surface 21b side of the lead plate 21 (see FIG. 1B).

  Then, as shown in FIGS. 1B and 1C, by caulking the tip end side of the protrusion 33, the tip end side of the protrusion 33 is divided into six divided pieces 36, and each divided piece 36 is also divided. Is expanded radially in the radial direction of the protrusion 33. As a result, the substrate 11 and the lead plate 21 are fixed while being sandwiched between the terminal main body 32 and the protruding portion 33. At the same time, the tip end side of the protrusion 33 is deformed and is crimped to the back surface 21 b of the lead plate 21. The length A2 (see FIG. 1B) of the base end side of the protrusion 33 (the portion inserted into the through holes 12 and 23) is the thickness of the substrate 11 and the thickness of the lead plate 21. It is set to the same size as the total. Further, the length A3 (see FIG. 1B) of the distal end side (the portion that becomes the split piece 36) of the protrusion 33 is longer than the length A2 of the proximal end side of the protrusion 33. Further, a length A4 (see FIG. 1C) from the center C1 of the protrusion 33 (see FIG. 1C) to the tip of each divided piece 36 is a length A5 that is half the width of the lead plate 21 (see FIG. 1C). 1) and longer than the radius R1 of the terminal main body 32 (see FIGS. 1A and 1B). In the present embodiment, the tip portions of the five divided pieces 36 among the divided pieces 36 are positioned outside the outer peripheral edge of the lead plate 21.

  As shown in FIGS. 1 and 2, the minus terminal 41 is formed by deep drawing of a metal plate (thickness: 0.2 mm) similarly to the plus terminal 31 and includes a terminal body 42 and a protrusion 43. . The terminal body 42 is disposed on the main surface 11a of the substrate 11 and has a container shape that opens at the tip. For this reason, a negative electrode terminal of a dry battery can be fitted into the terminal body 42. The terminal main body 42 has an inner diameter that is substantially the same as the outer diameter of the terminal main body 32 of the plus terminal 31, and has a circular bottom 44 in contact with the main surface 11 a of the substrate 11 and an outer peripheral portion of the bottom 44. And a wall portion 45 having a hexagonal shape in plan view that protrudes upward from the top. A distal end portion of the wall portion 45 has a flange 45 a that is bent in the inner peripheral direction of the terminal main body 42 and extends toward the bottom portion 44 at the distal end side. On the other hand, the protrusion 43 is integrally formed on the back surface 44a side of the bottom 44 of the terminal body 42, and has a cylindrical shape before the deformation (see FIG. 2B). Further, the thickness of the metal plate that forms the protrusion 43 is set to be the same as the thickness of the metal plate that forms the terminal body 42, and is set to be thicker than the thickness of the lead plate 22. Note that the length B1 (see FIG. 2B) of the projection 43 before the deformation is larger than the height h1 of the terminal body 42 (see FIG. 2B). Is set to about 1.2 times the height h1. In addition, the outer diameter of the protrusion 43 in the state before deformation is the inner diameter of the through hole 13 (see FIG. 3) provided in the substrate 11 and the through hole 24 (see FIG. 4) provided in the lead plate 22. It is equal to the inner diameter. The protruding portion 43 is inserted through the through holes 13 and 24 so that the tip side is located on the back surface 22b side of the lead plate 22 (see FIG. 1B).

  Then, as shown in FIGS. 1B and 1C, by caulking the tip side of the protrusion 43, the tip side of the protrusion 43 is divided into six divided pieces 46, and each divided piece 46 is also divided. Is expanded radially in the radial direction of the protrusion 43. As a result, the substrate 11 and the lead plate 22 are fixed while being sandwiched between the terminal main body 42 and the protrusion 43. At the same time, the tip end side of the protrusion 43 is deformed and is crimped to the back surface 22 b of the lead plate 22. The length B2 (see FIG. 1B) of the base end side of the protrusion 43 (the portion inserted into the through holes 13 and 24) is the thickness of the substrate 11 and the thickness of the lead plate 22. It is set to the same size as the total. Further, the length B3 (see FIG. 1B) of the distal end side (the portion that becomes the split piece 46) of the protrusion 43 is longer than the length B2 of the proximal end side of the protrusion 43. Further, a length B4 (see FIG. 1C) from the center C2 of the protrusion 43 (see FIG. 1C) to the tip of each divided piece 46 is a length B5 that is half the width of the lead plate 22 (see FIG. 1C). 1) and longer than the radius r1 of the terminal body 42 (see FIGS. 1A and 1B). In the present embodiment, the tip portions of the five divided pieces 46 among the divided pieces 46 are positioned outside the outer peripheral edge of the lead plate 22.

  Therefore, according to the present embodiment, the following effects can be obtained.

  (1) In the snap terminal 10 of the present embodiment, a cylindrical projection 33 having functions similar to those of the conventional eyelets 106 and 107 (see FIG. 8) is provided on the terminal bodies 32 and 42 constituting the terminals 31 and 41. 43 is integrally formed. For this reason, even if the caulking of the projecting portions 33 and 43 is insufficient, or when the projecting portions 33 and 43 are excessively caulked, the projecting portions 33 and 43 are separated from the terminal bodies 32 and 42. Never do. Therefore, the terminals 31 and 41 can be securely fixed to the substrate 11.

  (2) In this embodiment, since the eyelets 106 and 107 are not required, the number of parts can be reduced, and a plurality of through holes (through holes of the terminals 31 and 41, through holes 12 and 13 of the substrate 11, The assembly trouble of inserting the through holes 23 and 24 of the lead plates 21 and 22 and the eyelets 106 and 107 together is eliminated. That is, both the number of parts and the number of assembly steps can be reduced, and the product cost can be reduced accordingly.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to the drawings. Here, the description will focus on the parts that are different from the first embodiment, and the common parts will not be described in place of the same member numbers. In the present embodiment, the structure of the plus terminal and the minus terminal is different from that of the first embodiment.

  Specifically, as shown in FIG. 5, the snap terminal 50 of the present embodiment includes a plus terminal 51 (terminal member) having the same function as the plus terminal 31 of the first embodiment, and the snap terminal 50 of the first embodiment. A minus terminal 61 (terminal member) having the same function as the minus terminal 41 is provided. As shown in FIGS. 5 and 6, the protrusion 53 provided in the plus terminal 51 is integrally formed on the back surface 54 a side of the bottom 54 of the terminal main body 52 by deep drawing of a metal plate, and has a circular shape in plan view on the bottom 54. It has the shape of a container having an opening. Similarly, the protrusion 63 provided in the minus terminal 61 is also integrally formed on the back surface 64a of the bottom 64 of the terminal body 62 by deep drawing of a metal plate, and has a container shape having an opening having a circular shape in plan view at the bottom 64. ing. Further, the plate thickness of the metal plate forming the projections 53 and 63 is set to be the same as the plate thickness of the metal plate forming the terminal bodies 52 and 62 and is set to be thicker than the plate thickness of the lead plate 22. Yes. The protrusions 53 and 63 have front end surfaces 53a and 63a, and the heights H2 and h2 (see FIG. 6) from the connection portions with the terminal bodies 52 and 62 to the front end surfaces 53a and 63a are the thickness of the substrate 11. Is set to the same size. Further, the heights H2 and h2 of the protrusions 53 and 63 are smaller than the heights H3 and h3 (see FIG. 6) of the terminal bodies 52 and 62. Furthermore, the outer diameters of the protrusions 53 and 63 are equal to the inner diameters of the through holes 12 and 13 provided in the substrate 11. The protrusions 53 and 63 are inserted into the through holes 12 and 13 so that the front end surfaces 53a and 63a come into contact with the main surfaces 21a and 22a of the lead plates 21 and 22 (see FIG. 5A). . That is, the lead plates 21 and 22 of this embodiment are not provided with through holes.

  And as FIG. 5 shows, the projection parts 53 and 63 are connected to the lead plates 21 and 22 by performing resistance welding. As a result, the substrate 11 is fixed while being sandwiched between the terminal bodies 52 and 62 and the lead plates 21 and 22. At the same time, the tip surfaces 53 a and 63 a of the protrusions 53 and 63 are pressure-bonded to the main surfaces 21 a and 22 a of the lead plates 21 and 22.

  Therefore, according to the present embodiment, the protrusions 53 and 63 having the same functions as those of the conventional eyelets 106 and 107 (see FIG. 8) are integrally formed on the terminal bodies 52 and 62, and the protrusions 53 and 63 are connected to the lead plate. 21 and 22 are connected. Since the protrusions 53 and 63 are welded to the lead plates 21 and 22, the material forming the protrusions 53 and 63 and the material forming the lead plates 21 and 22 are melted and joined to each other. 63 is securely fixed to the lead plates 21 and 22. Moreover, since the protrusions 53 and 63 are integrally formed with the terminal bodies 52 and 62, the protrusions 53 and 63 are not separated from the terminal bodies 52 and 62. Therefore, the terminals 51 and 61 can be securely fixed to the substrate 11. Further, since the number of parts can be reduced by eliminating the need for the eyelets 106 and 107, the product cost can be reduced accordingly.

  In the present embodiment, the plate thickness of the metal plate forming the protrusions 53 and 63 is set to be thicker than the plate thickness of the lead plates 21 and 22. As a result, a difference between the thickness of the protrusions 53 and 63 and the thickness of the lead plates 21 and 22 occurs, and the resistance difference between the protrusions 53 and 63 and the lead plates 21 and 22 becomes large. The protrusions 53 and 63 are easily attached to the lead plates 21 and 22.

  In addition, you may change this embodiment as follows.

  -Although the projection parts 33 and 43 of the said 1st Embodiment were divided | segmented into six division pieces 36 and 46, you may be divided | segmented into five or less division pieces, and seven or more division pieces. It may be divided into.

  In the first embodiment, the protrusions 33 and 43 may be provided in advance with a configuration (such as a slit) for dividing the tip side of the protrusions 33 and 43 into a plurality of divided pieces 36 and 46.

  In the first embodiment, the plate thickness of the metal plate forming the protrusions 33 and 43 is set to be the same as the plate thickness of the metal plate forming the terminal bodies 32 and 42. However, the thickness of the metal plate that forms the protrusions 33 and 43 may be made thinner than the thickness of the metal plate that forms the terminal bodies 32 and 42. If it does in this way, since the plate | board thickness of the metal plate which forms the projection parts 33 and 43 will become relatively thin, it will become easy to crimp the projection parts 33 and 43. FIG. Further, since the metal plates forming the terminal bodies 32 and 42 are relatively thick, the substrate 11 and the lead plates 21 and 22 are fixed while being sandwiched between the terminal bodies 32 and 42 and the protrusions 33 and 43. At this time, the terminal bodies 32 and 42 are not easily deformed. Therefore, the terminal bodies 32 and 42 can be more securely fixed to the substrate 11.

  In the second embodiment, the thickness of the metal plate forming the protrusions 53 and 63 is set to be the same as the thickness of the metal plate forming the terminal bodies 52 and 62. However, the plate thickness of the metal plate forming the protrusions 53 and 63 may be thicker than the plate thickness of the metal plate forming the terminal bodies 52 and 62. In this way, the difference between the thickness of the protrusions 53 and 63 (heights H2 and h2 from the connection portions with the terminal bodies 52 and 62 to the tip surfaces 53a and 63a) and the thickness of the lead plates 21 and 22 is different. This increases the resistance difference between the protrusions 53 and 63 and the lead plates 21 and 22, so that the protrusions 53 and 63 are easily attached to the lead plates 21 and 22.

  -The projection parts 53 and 63 of the said 2nd Embodiment made | formed the container shape which has the opening part of planar view circular shape in the bottom parts 54 and 64. As shown in FIG. However, you may change the shape of a projection part. For example, when the protrusion is connected to the lead plates 21 and 22 by resistance welding, the plus terminal 71 (see FIG. 7A) and the minus terminal 81 (see FIG. 7B) are opened to the bottom parts 74 and 84, respectively. It is preferable to include massive projections 73 and 83 that do not have a gap. In this way, the difference between the thickness of the protrusions 73 and 83 (heights H4 and h4 from the connecting portions with the terminal bodies 72 and 82 to the tip surfaces 73a and 83a) and the thickness of the lead plates 21 and 22 is different. Further, the resistance difference between the protrusions 73 and 83 and the lead plates 21 and 22 is increased, so that the protrusions 73 and 83 are easily attached to the lead plates 21 and 22.

  Next, in addition to the technical ideas described in the claims, the technical ideas grasped by the embodiment described above are listed below.

  (1) In any one of the above means 1 to 3, the protrusion is inserted through a through hole provided in the substrate and a through hole provided in the lead plate, and a tip side is a back side of the lead plate. Snap terminal characterized by being located in.

  (2) In the above means 4, the terminal member is formed by deep drawing of a metal plate, and the thickness of the metal plate forming the projection is thicker than the thickness of the lead plate, A snap terminal characterized in that it is thicker than the thickness of the metal plate forming the metal plate.

  (3) A terminal member for a snap terminal connected to an electrode of a dry battery, which is disposed on a main surface of a substrate having insulating properties, and a container-like terminal body into which the electrode can be fitted, and the terminal body A cylindrical protrusion that is integrally formed on the bottom rear surface side of the substrate and passes through the substrate and a lead plate disposed on the back surface side of the substrate, and a tip end side is located on the rear surface side of the lead plate. By caulking, the substrate and the lead plate are fixed in a state of being sandwiched between the terminal main body and the protruding portion, and the tip end side of the protruding portion is deformed and crimped to the back surface of the lead plate. The terminal member for snap terminals characterized by the above-mentioned.

  (4) A terminal member for a snap terminal, wherein, in the technical idea (3), the length of the protrusion in the state before deformation is larger than the height of the terminal body.

  (5) A terminal member for a snap terminal connected to an electrode of a dry battery, which is disposed on a main surface of a substrate having insulation properties, and a container-like terminal body into which the electrode can be fitted, and the terminal body And a protrusion that is formed in a through hole provided in the substrate, the protrusion having a front end surface, and from the connecting portion with the terminal body to the front end surface Is set to the same size as the thickness of the substrate, and the protrusion is welded to a lead plate disposed on the back side of the substrate, whereby the substrate is connected to the terminal body and the lead plate. A terminal member for a snap terminal, wherein the terminal member is fixed in a state of being sandwiched between the protrusions, and a tip end surface of the protruding portion is crimped to the lead plate.

  (6) The terminal member for a snap terminal according to the technical idea (5), wherein the height of the protrusion is smaller than the height of the terminal body.

DESCRIPTION OF SYMBOLS 10, 50 ... Snap terminal 11 ... Board | substrate 11a ... Main surface 11b of board | substrate ... Back surface 12, 13 ... Through-hole 21,22 ... Lead board 21b, 22b ... Back side 31, 51, 71 ... of a lead board as a terminal member Positive terminals 32, 42, 52, 62, 72, 82 ... terminal bodies 33, 43, 53, 63, 73, 83 ... projections 34, 44, 54, 64, 74, 84 ... bottoms 34a, 44a of the terminal bodies, 54a, 64a ... back surface 36, 46 at the bottom of the terminal body, split pieces 41, 61, 81 ... negative terminals 53a, 63a, 73a, 83a as terminal members ... from the tip end surfaces A4, B4 ... center of the projection Lengths A5 and B5 to the tips of a plurality of divided pieces Lengths C1 and C2 half the width of the lead plate Centers H2, H4, h2 and h4 of the protrusions From the connection portion with the terminal body to the tip surface Height R1, 1 ... radius of the terminal body

Claims (2)

An insulating substrate; a lead plate disposed on the back side of the substrate; and a metal terminal member electrically connected to the lead plate, wherein the terminal member is connected to an electrode of a dry battery. A snap terminal,
The terminal member is disposed on the main surface of the substrate, and is integrally formed on a container-like terminal main body to which the electrode can be fitted, and a bottom rear surface side of the terminal main body, and penetrates the substrate and the lead plate. And a cylindrical protrusion located on the back side of the lead plate,
By caulking the protrusion, the tip side of the protrusion is divided into a plurality of divided pieces, and the plurality of divided pieces are radially expanded in the radial direction of the protrusion,
The length from the center of the protrusion to the tips of the plurality of divided pieces is longer than half the width of the lead plate and larger than the radius of the terminal body,
A tip portion of at least one divided piece of the plurality of divided pieces is positioned outside an outer peripheral edge of the lead plate,
The substrate and the lead plate are fixed in a state of being sandwiched between the terminal main body and the protrusion, and the tip side of the protrusion is deformed to be crimped to the back surface of the lead plate and the back surface of the substrate. Snap terminal characterized by that. The terminal member is formed by deep drawing of a metal plate,
The thickness of the metal plate forming the protrusions snap terminal according to claim 1, wherein said that the plate thinner than the thickness of the metal plate forming the terminal body.

Images