JP2008198559A - connector - Google Patents

Abstract

To provide a connector that is firmly fixed to a circuit board and can be reduced in size, and that is suitable for a battery of a mobile phone or the like.
A terminal portion 32 for electrically connecting a contact spring piece 3 and a circuit board CB, and a fixing portion 33 disposed at a position away from the terminal portion 32 in a contact spring piece pressing direction A by a predetermined distance D. Then, the contact spring piece 3 is firmly attached and fixed to the circuit board CB. Thereby, when the contact spring piece 3 is pushed in by the mating contact, the pushing force is not transmitted to the casing 2 that accommodates the contact spring piece 3, and the connector 1 is not peeled off or shifted from the circuit board CB.
[Selection] Figure 3

Description

  The present invention relates to a connector attached to an electronic device such as a mobile phone, and more particularly to a connector suitable for connecting a circuit board of an electronic device and a battery.

  Conventionally, as a circuit connection part for electrically connecting a connection target and a connection target, for example, there is a multiple plug described in Patent Document 1. Hereinafter, reference numerals in parentheses are those described in Patent Document 1. The multiple plug (D) includes a plug body (2) and an S-shaped spring portion (9) accommodated in the plug body (2). The plug body (2) is provided with a hole for inserting the contact (1a) of the S-shaped spring part (9), and the contact (1a) of the S-shaped spring part (9) is inserted into the hole. In this state, the S-shaped spring portion (9) is accommodated between the plug body (2) and the plug body (2), and both are fixed.

  When the terminal (1b) of the S-shaped spring part (9) is pushed by the jack (4), the terminal (1b) is moved laterally from the pressing direction of the jack (4) by the deformation of the S-shaped spring part (9). It is designed not to slip.

  The mounting fixing pin of the plug main body (2) is inserted into the hole of the circuit board or the like, and the multiple plug (D) is fixed to the circuit board or the like, and the S-shaped spring portion (9) is pressed by the jack (4). However, the terminal (1b) of the S-shaped spring portion (9) and the plug body (2) do not float or shift from the circuit board or the like.

  However, in a small electronic device such as a mobile phone or a digital camera, a connector attached to the small electronic device is required to be downsized. Along with the miniaturization, the mounting fixing pins of the plug body (2) are also required to be reduced in size, and the number and arrangement of mounting fixing pins are limited, so that the plug (corresponding to the connector of the present invention) and the circuit board can be mounted. Fixing alone will not be enough to withstand the pressing of the jack (4).

  Therefore, in a small electronic device, a mounting and fixing structure between a connector and a circuit board as shown in FIG. 5 is adopted. That is, in FIG. 5, the connector 100 has its mounting and fixing pins 101 and 101 inserted into the holes 201 and 201 of the circuit board CB, and the connector 100 is fixed and fixed to the circuit board CB. However, with this alone, when the spring contacts 102, 102 are pushed in the direction of arrow A to the terminal of the battery or the like and pushed to 102 ', the connector 100 is likely to be lifted or displaced from the circuit board CB. Therefore, the connector 100 is firmly fixed to the circuit board CB with L-shaped angles 300 and 300 over almost the entire width K on both sides in the depth direction of the connector 100.

Japanese Patent Laid-Open No. 2004-22406

  The L-shaped angles 300 and 300 are very effective for firm fixation, but are not suitable for downsizing, and the number of parts increases, resulting in an increase in cost.

  Therefore, the present inventor has improved the present invention by reducing the number of parts and reducing the size.

  An object of the present invention is to provide a spring-like contact-type connector that can be firmly attached to an electronic device circuit board or the like and that can reduce the cost by reducing the number of components.

  In order to achieve the above object, the present invention includes a housing chamber having an opening on the front surface, a casing that is attached and fixed to a component of an electronic device, a contact portion, a terminal portion, and a fixing portion. The contact portion protrudes from the opening, and the fixing portion is arranged at a predetermined distance from the terminal portion in the direction of pressing the contact spring piece, and is attached to the component by the terminal portion and the fixing portion. And a fixed contact spring piece.

  In the invention, the terminal portion and the fixing portion are provided at the base portion of the contact spring piece, and the elastic deformation portion of the contact spring piece is provided between the base portion and the contact portion. The connector is firmly fixed to the part.

  Further, a contact spring piece built-in locking hook portion is provided at the base portion of the contact spring piece, and a contact portion protrusion position setting hook portion is provided at the contact portion, respectively, and the built-in locking hook portion is engaged with the inner wall of the storage chamber. When the built-in locking step portion to be joined and the protruding position setting step portion to be engaged with the protruding position setting collar portion are provided, the connector becomes compact, and even a multi-contact connector can be miniaturized.

  Here, the contact spring piece is made of a bent thin metal plate, and the terminal part, the fixing part, the built-in locking hook part and the contact part protruding position setting hook part are provided within the narrow width. As a result, the width of the connector can be further reduced, and the material removal of the contact spring piece from the metal thin plate is economical.

  According to the present invention, even if the contact portion of the connector is strongly pressed by the mating contact, the terminal portion and the fixing portion that are separated from each other in the pressed direction are firmly attached and fixed to the component of the electronic device. A pressing force is not transmitted to the casing, and the connector is not peeled off or displaced from the parts of the electronic device, so that a stable connector function can be maintained.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  1 is a front view showing an embodiment of the connector of the present invention, FIG. 2 is a bottom view of FIG. 1, FIG. 3 is a sectional view taken along line III-III in FIG. 1, and FIG. It is a top view which shows the raw material before the bending process of the contact spring piece.

  1 to 3, a connector 1 is a battery connector for a mobile phone, and includes a casing 2 and a contact spring piece 3.

  The casing 2 is molded with an electrically insulating synthetic resin. The casing 2 is provided with three accommodation chambers 4 having an opening F on the front surface. On both sides of the lower surface B of the casing 2, mounting fixing pins 5 and 5 project downward.

  The contact spring piece 3 is a strip which is punched from a thin stainless steel plate and is narrow and elongated by a predetermined bending process or the like, and in the longitudinal direction, in this embodiment, is formed into a substantially W shape (see FIG. 3). It has a shape. The surface of the contact spring piece 3 is gold-plated to improve the conductivity of the contact portion and the solder wettability of the terminal portion.

  The contact spring piece 3 is housed in the housing chamber 4, the contact portion 31 protrudes from the opening F, and is separated from the terminal portion 32 and the terminal portion 32 by a predetermined distance D in the contact spring piece pushing direction A. Is fixed to the circuit board CB of the mobile phone by soldering with the fixing portion 33 arranged on the mobile phone.

  The contact spring piece 3 is further provided with a base 34, an elastic deformation portion 35, a contact spring piece built-in locking hook 36 and a protruding position setting hook 37.

  The elastic deformation portion 35 is provided between the base portion 34 and the contact portion 31, and the base portion 34, the elastic deformation portion 35, and the contact portion 31 are sequentially bent to form a substantially W shape, and the housing chamber 4 of the casing 2. Is housed inside.

  The base 34 is disposed in the storage chamber 4 along the bottom surface B of the casing 2. The base 34 is a side of one end of the substantially W shape of the contact spring piece 3. One end portion of the base portion 34 is bent downward to form the terminal portion 32, and a three-way punching piece portion formed by three-way punching on the other end side, that is, the boundary side with the elastic deformation portion 35 is bent downward. Thus, the fixing portion 33 is formed. Further, a two-way punched piece formed by two-way punching is formed in the intermediate portion of the base portion 34, and the two-way punched piece is also bent downward to form a contact spring piece built-in locking hook portion 36. Yes.

  In the present embodiment, the protruding position setting collar portion 37 is formed at the tip of the contact portion 31.

  A built-in locking step 46 and a protruding position setting step 47 are provided on the inner wall of the housing chamber 4 of the casing 2 to engage with the contact spring piece built-in locking hook 36 and the protruding position setting flange 37, respectively. It has been. The built-in locking step 46 is arranged on one side surface of the guide groove 43 provided on the bottom side of the storage chamber 4 so as to face the contact spring piece built-in locking hook 36. The protruding position setting step 47 is provided on both upper side walls of the storage chamber 4 so as to face the protruding position setting flange 37.

  FIG. 4 shows a stainless steel sheet material before the contact spring piece 3 is bent. As shown in FIG. 4, the contact spring piece 3 has an elongated strip shape with a narrow width H, and the terminal portion 32, the fixing portion 33, the built-in locking collar portion 36, and the contact portion protruding position setting collar portion 37 are narrow. It is provided within the width H. At the time of punching, the terminal part 32, the fixing part 33, the built-in locking hook part 36, and the contact part protruding position setting hook part 37 are simultaneously punched and formed. Among them, the fixing portion 33 and the built-in locking collar portion 36 are locally bent (see FIG. 3). The contact portion protruding position setting collar portion 37 protrudes slightly to both sides of the contact portion 31, and this protruding portion engages with the protruding position setting step portions 47 provided on the upper side walls of the casing housing chamber 4. The central portion of the contact portion 31 is an embossed portion 38 that is stamped and pressed in the punching process, and this embossed portion 38 causes elastic deformation of the contact portion 31 when the contact spring piece 3 is pushed into the mating contact. It is for suppressing.

  The stainless steel sheet material of FIG. 4 is bent into a substantially W shape as shown in FIG.

[Assembly of connector and attachment to circuit board]
A method for assembling the contact spring piece 3 into the casing 2 in the connector of the present embodiment whose configuration has been described above will be described.

  First, the contact spring piece 3 is inserted into the accommodation chamber 4 from the rear of the casing 2 (left side in FIG. 3). The portion where the fixing portion 33 is guided by the guide groove 43 of the storage chamber 4 and the base portion 34 and the elastic deformation portion 35 are connected enters the lower pocket portion 44 of the storage chamber 4, and the contact portion 31 is connected to the storage chamber 4. Projects forward from the front opening F. When the projecting position setting collar portion 37 hits the projecting position setting step 47 of the storage chamber 4, the contact portion 31 stops moving forward, and as the base portion 34 further advances, the elastic deforming portion 35 elastically deforms and the contact spring piece is incorporated. The locking hook 36 is fitted into the built-in locking step 46 of the storage chamber 4, whereby the contact spring piece 3 is locked and positioned.

  In this way, the three contact spring pieces 3 are accommodated in the storage chamber 4 and locked, whereby the connector 1 is completed.

  To attach the connector 1 to the circuit board CB, the mounting fixing pins 5 of the connector 1 are pushed into the holes 51, 51 of the circuit board CB and mechanically fixed, and the terminal portion 32 and the fixing portion 33 are soldered to the circuit board CB. And fix it electrically and mechanically.

[Connector operation when battery is loaded]
Next, the operation of the connector 1 when the battery is attached to and detached from the mobile phone will be described with reference to FIG. 3 of FIG. 3 has shown the contact spring piece when a battery is removed. 3 'has shown the contact spring piece when a battery is loaded.

  When the battery is removed, the contact spring piece 3 has its elastic deformation portion 35 elastically deformed, and the protruding position setting collar portion 37 hits the protruding position setting step portion 47 of the casing 2 due to its elasticity.

  When the battery is loaded, the terminal of the battery pushes the contact portion 31 from the right side of the drawing, and the contact spring piece 3 is further elastically deformed by the elastic deformation portion 35 and deformed to the position 3 '. In this state, the vicinity of the base 34 of the contact spring piece 3 is also pushed to the left in the figure and receives a force that rotates counterclockwise.

  In the conventional connector, since there is no fixing portion 33, the base portion 34 floats counterclockwise with the terminal portion 32 fixed, the contact spring piece 3 hits the casing 2, and the mounting fixing pin 5 of the casing 2 is connected to the circuit board CB. As it is pulled out from the hole 51, it floats up.

  However, in the connector according to the present invention, the base portion 34 of the contact spring piece 3 is firmly fixed to the circuit board CB by the front and rear fixing portions 33 and the terminal portions 32. Therefore, both the contact spring piece 3 and the casing 2 are lifted. Even if a battery is loaded, the connector 1 is maintained in a fixed connection with the circuit board CB.

  The present invention is not limited to the above-described embodiment, and can be implemented in various embodiments within the scope of the claims. For example, a contact spring piece with an appropriate shape different from the W type, a mounting and fixing method between a casing and an electronic device part that is not a mounting and fixing pin method, and a contact spring piece that has a pin fixed to the contact spring piece without being bent by a leaf spring Various modification examples are conceivable, such as a locking hook part, a protruding position setting hook part in which the bent tip is bent and brought into contact with the protruding position setting step part, and a fixing part is screwed to the circuit board.

The front view which shows one Embodiment of the connector of this invention. The bottom view of FIG. III-III sectional drawing of FIG. The top view which shows the raw material before the bending process of the contact spring piece used for the connector of FIG. The conventional connector is shown, (a) is a front view, (b) is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connector 2 Casing 3 Contact spring piece 4 Accommodating chamber 5 Mounting fixing pin 31 Contact part 32 Terminal part 33 Fixing part 34 Base part 35 Elastic deformation part 36 Contact spring piece built-in locking hook part 37 Projection position setting hook part 43 Guide groove 44 Below Head part 46 Built-in locking step part 47 Projection position setting step part 51 Hole of circuit board CB A Contact spring piece push-in direction B (of casing) D (distance between terminal part 32 and fixing part 33) F (front face) opening CB Circuit board of cellular phone

Claims (4)

A casing having an opening on the front surface, and a casing attached and fixed to a component of the electronic device,
A contact portion, a terminal portion, and a fixing portion, which are accommodated in the storage chamber, the contact portion protrudes from the opening portion, and the fixing portion is located at a position away from the terminal portion by a predetermined distance in the direction in which the contact spring is pushed. A contact spring piece disposed and fixed to the component by the terminal portion and the fixing portion;
A connector comprising:   The connector according to claim 1, wherein the terminal portion and the fixing portion are provided at a base portion of the contact spring piece, and an elastic deformation portion of the contact spring piece is provided between the base portion and the contact portion.   A contact spring piece built-in locking collar is provided at the base of the contact spring piece, and a contact portion protruding position setting collar is provided at the contact, and is engaged with the built-in locking collar at the inner wall of the storage chamber. The connector according to claim 2, comprising a built-in locking step and a protruding position setting step that engages with the protruding position setting flange.   The contact spring piece is made of a thin metal plate having a narrow width that is bent, and the terminal portion, the fixing portion, the built-in locking collar portion, and the contact portion protruding position setting collar portion are provided within the narrow width. Item 4. The connector according to item 3.

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