JP2019200886A - Battery holder - Google Patents

Abstract

To provide a battery holder which has an excellent impact resistance when an electron device is dropped, can prevent a connection failure due to fine sliding wear caused in a contact part between a contact terminal and a power supply in advance, and can perform a stable power supply.SOLUTION: A battery holder 1 is a structure that two contact parts 42 each having a top point of a v-shaped bending part as a contact point on both sides of a coil part 41 in which a support axis 51 is inserted, and a contact terminal 40 formed by a twisted coil spring in which a bending process is performed to a wire as one metal wire material is attached swingably to a terminal holder 50.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a battery holder that is housed in an electronic device with a plurality of batteries loaded.

  In an electronic device using a driving power source as a battery, a battery holder that can hold a plurality of cylindrical dry batteries connected in series is employed. The battery holder is removable from the electronic device because the entire holder is taken out of the battery housing portion of the electronic device and replaced when the battery is replaced.

  The electronic device is provided with contact terminals (first contact terminal, second contact terminal) for connecting batteries loaded in the battery holder in series. The 1st contact terminal is provided with the contact connected with the positive electrode (+ pole) or the negative electrode (-pole) of a battery, and is provided independently in the inner back part of a battery storage part. The second contact terminal includes two contacts so as to connect the two batteries with opposite polarities, and is provided on the inlet side of the battery housing portion.

  By the way, the second contact terminal has two contacts to be connected to each pole in a state where two batteries are arranged in reverse polarity, and as a mounting method thereof, a holder mounting type that is directly mounted on one end of the battery holder, There is a battery lid attachment type provided on the back side of the lid portion of the electronic device that houses the battery holder. In addition, as a battery lid attachment type battery holder, what is disclosed by the following patent document 1, for example is known.

JP 2010-23003 A

  A battery lid attachment type battery holder such as the battery holder disclosed in Patent Document 1 has a configuration in which a leaf spring-like second contact terminal is attached to the back surface of a lid portion attached to a casing of an electronic device. If the contact period is corroded or the vicinity of the contact is bent due to dropping or the like, the repair becomes necessary.

  However, since the second contact terminal is provided on the lid, there is a problem in that the electronic device main body must be repaired to the manufacturer, and the user's downtime is prolonged. Further, when the contact terminal is formed in a leaf spring shape, there is a problem that the contact portion is easily deformed by an impact at the time of dropping.

  If a leaf spring is used as the second contact terminal, it is easy to attach to the lid, but the contact part is easily deformed by the impact at the time of dropping, and a fine slide generated at the contact part between the terminal and the battery electrode part. There is a problem that contact resistance increases due to sliding corrosion (fretting corrosion) due to dynamic wear, and a connection failure between the second contact terminal and the battery tends to occur.

  Although it is possible to consider using a coil spring instead of a leaf spring in consideration of bending, etc., it cannot be attached by caulking like a leaf spring in order to connect the coil spring to the lid. There is a problem that the manufacturing process becomes complicated and leads to cost increase.

  Therefore, the present invention has been made in view of the above problems, and is a battery holder that can be attached to and detached from an electronic device, and has excellent impact resistance when the electronic device falls, and further, the contact between the contact terminal and the battery. An object of the present invention is to provide a battery holder capable of preventing a connection failure due to fine sliding wear occurring in a portion and performing a stable power supply.

In order to achieve the above-described object, a first aspect of the present invention includes a holder main body for holding batteries arranged in parallel so as to have opposite polarities,
A contact terminal having two contacts that are brought into contact with and in contact with the positive electrode of one battery held by the holder body and the negative electrode of the other battery;
A support shaft for supporting the contact terminal at a position between the contacts on one end side of the holder body;
A battery holder comprising:

According to a second aspect of the present invention, in the battery holder according to the first aspect, the contact terminal includes:
A torsion coil spring in which a coil portion through which the support shaft is inserted and a contact portion having contact points at the apexes of V-shaped bent portions provided on both sides of the coil portion are integrally formed from a single metal wire. It is a battery holder characterized by being.

  According to a third aspect of the present invention, in the battery holder according to the first or second aspect, the one end of the holder body has a rib that holds the contact terminal so as not to move in the axial direction of the support shaft. A battery holder is provided with a terminal holder.

According to a fourth aspect of the present invention, in the battery holder according to the first or second aspect, on the bottom surface of the terminal holder, an opening for partially projecting the contact toward the battery storage area side of the holder body. Holes are formed,
The battery holder is characterized in that a dimension in a width direction of the opening hole is narrower than a diameter of a positive electrode of the battery.

  According to a fifth aspect of the present invention, in the battery holder according to the first or second aspect, the terminal holder engages with a tip of the contact terminal to project a swing range of the terminal from the terminal holder. The battery holder is provided with a projecting member that restricts the operation of the battery holder.

  According to the present invention, since the contact terminal is supported by the support shaft, even if the electronic device is dropped, the contact terminal itself is not deformed like a leaf spring-like terminal, and the contact terminal itself is between appropriate batteries. A state in which the contact pressure is maintained can be maintained. Further, since the contact terminal is not provided on the lid of the electronic device, even when the contact terminal breaks down, only the battery holder can be replaced or repaired, and the downtime can be shortened.

  Since the contact terminal is a torsion coil spring, the contact pressure of the battery can be easily adjusted, and when the battery is attached or detached by making the contact part V-shaped, the electrode part of the battery is caught by the contact part. Can be attached and detached smoothly. In addition, since the contact of the contact portion is formed by a single metal wire, the contact of the contact portion becomes linear, so that the contact portion and the battery rub against each other to remove the oxide film, and the contact portion between the contact terminal and the battery It is possible to prevent a connection failure due to fine sliding wear occurring in the case.

  In addition, since the terminal holder is provided with a rib that holds the contact portion of the contact terminal so as to sandwich the contact portion, the contact portion of the contact terminal can be prevented from shaking in the axial direction of the support shaft when the battery is attached or detached. .

  Furthermore, since the width dimension of the opening hole formed in the bottom surface of the terminal holder is narrower than the diameter of the positive electrode of the battery, the contact portion is not excessively pushed by the positive electrode when the battery is loaded into the battery holder. Deformation can be prevented without direct impact on the terminals.

  In addition, when the contact terminal tip is hooked on the tip fixing protrusion and stored, when the contact terminal swings, the tip end of the contact terminal is hooked on the tip fixing projection and the swing range of the contact terminal is restricted. It is possible to prevent the tip from protruding from the terminal holder.

It is a schematic sectional drawing of the electronic device in which the battery holder which concerns on this invention is accommodated. It is a general | schematic disassembled perspective view of the state which decomposed | disassembled the main components which comprise the holder. (A) is the schematic perspective view which looked at the holder from the lower surface side of the terminal holder, (b) is the schematic perspective view which looked at the holder from the upper surface side of the terminal holder. (A) is a general | schematic fragmentary sectional view of the state which accommodated the contact terminal temporarily in the terminal holder, (b) is a schematic fragmentary sectional view of the state which accommodated the contact terminal in the terminal holder. (A) is the schematic block diagram which looked at the terminal holder from the opening hole side, (b) is the schematic block diagram which looked at the holder main body from the battery storage area side.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings.

  Note that the drawings attached to the present specification may be schematically expressed by appropriately changing the scale, vertical / horizontal dimension ratio, shape, etc. from the actual one for convenience of illustration and easy understanding. However, the interpretation of the present invention is not limited. Therefore, the present invention is not limited by the embodiment described with reference to the accompanying drawings, and all other forms, examples, operation techniques, and the like that can be considered by those skilled in the art based on this embodiment are included in the present invention. It shall be included in the category.

  In this specification, in the following description with reference to the accompanying drawings, when the words “up”, “down”, “left”, and “right” are used to indicate directions and positions, this is indicated by the user as shown in the drawings. Matches top, bottom, left, and right.

  As shown in FIG. 1, the battery holder 1 according to the present invention is configured to be detachable from the electronic device 100, and the electronic device is loaded with a plurality of cylindrical batteries B for supplying power to the electronic device 100. The battery is accommodated in a battery accommodating portion 101 provided at a gripping portion of 100.

[Electronics]
The electronic device 100 according to the present embodiment is a wireless control device that is operated when an industrial device such as a crane or an automatic guided vehicle is operated as a controlled object, and a predetermined operation is performed on an operation unit (not shown). The control signal is transmitted toward the controlled object.

  A battery housing portion 101 for housing the battery holder 1 is formed in the casing 100 a of the electronic device 100, and a lid portion 102 is pivotally supported in the vicinity of the opening of the battery housing portion 101 so as to be opened and closed. The battery housing portion 101 is closed by a screw 103 after the lid portion 102 is closed in a state where the battery holder 1 loaded with the battery B is housed.

  A terminal portion 104 that is electrically connected to the battery B loaded in the battery holder 1 is formed in the inner back portion 101 a that faces the opening of the battery housing portion 101. In this embodiment, as shown in FIG. 1, two of the batteries B accommodated in the battery holder 1 are provided independently so as to be in contact with the electrodes of the two batteries B, respectively. The terminal portion 104 is wound in a coil shape and has a spring property, and contacts the electrode (positive electrode or negative electrode) of the battery B when the battery holder 1 loaded with the battery B is accommodated in the battery accommodating portion 101. Then, an appropriate contact pressure is applied to the battery B, and power is supplied to the power terminal of the electronic device 100.

  Note that the form of the electronic device 100 is not limited to a radio pilot for industrial equipment, but includes a radio control transmitter that controls various model bodies (automobiles, motorcycles, airplanes, ships, and the like) as measurement targets, measurement data, and the like. Any device that is battery-powered as a power source, such as a data logger to collect or a flashlight may be used.

[Battery holder]
Next, the battery holder 1 of the present embodiment will be described with reference to FIGS.
As shown in FIG. 2 or 3, the battery holder 1 of the present embodiment includes a holder 20 that holds the battery B in the holder body 10, an intermediate terminal 30 interposed between the batteries B, and a battery B to be loaded. A contact terminal 40 connected to one of the electrodes and a terminal holder 50 to which the contact terminal 40 is attached are provided.

<Holder body>
The holder main body 10 is loaded with the same number of batteries B connected in series with the partition plate 11 serving as a base, with a rectangular long partition plate 11 matching the shape of the battery housing portion 101 as a base. In the present embodiment, the holder body 10 has a battery housing area in which two batteries B are loaded on the front side and the depth side in the drawing around a rectangular partition plate 11 as shown in FIG. The batteries B loaded in the holder main body 10 are reversed in the loading direction on the front side and the depth side in the figure so that they are connected in series.

<Holding part>
The holding portion 20 is formed of a pair of claw members that are curved with a curvature along the shape of the battery B from the side end portion of the partition plate 11 toward the outside, and holds the battery B loaded in the holder main body 10. The holding unit 20 has elasticity so that each claw member is wider than the outer diameter of the battery B in order to facilitate attachment and detachment of the battery B from the holder body 10, and has a predetermined length along the longitudinal direction of the holder body 10. It is formed at intervals.

  In the present embodiment, the holding portions 20 are formed in a total of eight pairs, each having four pairs around the partition plate 11 so as to hold one battery B at two locations. Therefore, when the battery holder 1 is removed from the electronic device 100 and the battery is replaced, the battery holder 1 can be easily replaced by placing a finger on the battery B from between the holding portions 20.

<Intermediate terminal>
The intermediate terminal 30 is formed by bending a single wire, which is a single metal wire, on one plane, and is interposed between the batteries B loaded in the holder body 10. As the shape of the intermediate terminal 30, for example, as shown in FIG. 2, the wire is bent into a substantially U shape, and the central portion thereof is bent into a substantially U shape toward the center to form a U-shaped portion. The shape of the intermediate terminal 30 is not particularly limited as long as it is a shape that is interposed between the electrodes of each battery B and can be in partial line contact with the electrode of each battery B.

  When the intermediate terminal 30 is interposed between the batteries B, when the battery B moves in the longitudinal direction of the holder body 10, the intermediate terminal 30 and the electrode of the battery B rub against each other to remove the oxide film formed on the electrode surface. Therefore, it is possible to prevent an increase in contact resistance between the batteries B due to the fine sliding wear that occurs between the batteries B.

<Contact terminal>
The contact terminal 40 is a member for connecting the batteries B loaded in the holder main body 10 in series with opposite polarity with the partition plate 11 as a boundary. The contact terminal 40 is inserted into the shaft hole 50a and the coil portion 41 while being accommodated in the terminal accommodating portion 52 of the terminal holder 50, and the retaining E-ring 53 is attached to the contact terminal 40 while being pivotally supported. The support shaft 51 is fixed by mounting. As a result, the contact terminal 40 is pivotally supported around the support shaft 51. When exchanging the contact terminal 40, it can be easily detached from the terminal holder 50 by removing the E-ring 53 and removing the support shaft 51.

  The contact terminal 40 is formed by bending a single metal wire (wire) as shown in FIG. 2, and a coil part 41 wound in a coil shape at the center thereof, and V on both sides of the coil part 41. This is a torsion coil spring having a substantially M shape having a contact portion 42 having a contact point at the apex of the bent portion of the character shape.

  As with the torsion coil spring, the contact terminal 40 can adjust the biasing force by varying the degree of expansion of the contact portion 42. Therefore, if the degree of expansion of the contact portion 42 is adjusted, the contact pressure can be easily adjusted to such a degree that the battery B can maintain good electrical contact. Moreover, since the shape of the contact portion 42 is substantially V-shaped, when the battery B is attached or detached, the electrode portion of the battery B can be smoothly attached and detached along the inclined portion without being caught by the contact portion 42. .

  Since the contact portion 42 of the contact terminal 40 is formed by bending a wire, the contact area with the battery B is kept to a minimum. As a result, the contact with the electrode of the battery B is not a surface contact but a point contact (or a line contact depending on the curvature of the wire), so that the contact portion 42 and the electrode rub against each other and are formed on the electrode surface. A self-cleaning effect for removing the oxide film can be obtained. Therefore, there is an effect of preventing contact failure due to increase in contact resistance caused by fine sliding wear between the electrode of the battery B and the contact portion 42.

  Further, as shown in FIG. 4A, the contact terminal 40 has an angle of expansion (arm angle) of the contact portion 42 with the coil portion 41 as the center in a state where the contact terminal 40 is temporarily stored in the terminal holder 50. As shown in FIG. 4B, the contact terminal 40 is accommodated in the terminal holder 50 with the distal end 43 hooked on a distal end fixing projection 55 described later, as shown in FIG.

As a result, even with a small spring stroke, the contact pressure applied by the two contact portions 42 of the contact terminal 40 with the coil portion 41 as the center is made uniform, and the contact pressure sufficient to keep the battery B in good electrical contact can be obtained. Can be granted.

<Terminal holder>
The terminal holder 50 has an elliptical column shape in which a terminal accommodating portion 52 that accommodates the contact terminal 40 is formed at a substantially central portion, and is provided at an end portion of the holder main body 10 on the lid portion 102 side.

  As shown in FIG. 2, the terminal holder 50 is formed with a pair of ribs 54 for preventing the contact terminal 40 from moving in the axial direction of the support shaft 51. In the present embodiment, since there are two contact portions 42 on both sides of the coil portion 41 of the contact terminal 40, two ribs 54 are formed so as to hold the contact portions 42 therebetween. The rib 54 holds the contact portion 42 from both sides, so that when the battery B is attached or detached, the contact position between the battery B and the connection terminal 40 is maintained without moving the contact position in the axial direction of the support shaft 51. Can do.

  Further, between the ribs 54 on the inner wall of the terminal storage portion 52, a tip fixing projection 55 is formed as a projection member that hooks with the tip 43 of the contact terminal 40 to be stored. The tip fixing protrusion 55 is formed at a position where the formation position is aligned with the center of the coil portion 41 of the contact terminal 40. For this reason, the connection terminal 40 is accommodated in the terminal accommodating portion 52 in a state in which the distal end 43 is engaged with the distal end fixing protrusion 55, so that the space in the height direction of the terminal accommodating portion 52 can be minimized.

  Since the contact terminal 40 is formed by bending a single wire, its tip 43 is looped in a substantially U shape, and when the contact terminal 40 is stored in the terminal storage portion 52, the contact terminal 40 is used. The tip 43 is stored in a state of being hooked on the tip fixing protrusion 55 against the urging force.

  Thereby, when the contact terminal 40 accommodated in the terminal accommodating part 52 is accommodated, the tip 43 of the contact terminal 40 is caught by the tip fixing projection 55 and engaged, so that the tip 43 does not protrude from the terminal holder 50. The swing range of the contact terminal 40 is restricted. That is, when the contact terminal 40 swings around the support shaft 51, even if one tip 43 swings in a direction protruding from the terminal holder 50, the other tip 43 is caught by the tip fixing protrusion 55. The swing range of the contact terminal 40 can be restricted to a range in which the tip 43 does not protrude from the terminal holder 50.

  Further, since the contact holder 40 is housed in the terminal holder 50 with the tip 43 of the contact terminal 40 hooked on the tip fixing protrusion 55, the contact terminal 40 can be expanded from the angle A to the angle A ′. Even with a small stroke, the necessary contact pressure is applied between the contact portion 42 and the battery B and between the batteries B.

  As shown in FIG. 5 (a), on the bottom surface of the terminal holder 50, a contact that becomes the apex of the contact portion 42 when the contact terminal 40 is stored in the terminal storage portion 52 protrudes toward the battery storage region side of the holder body 10. An opening hole 56 is formed for this purpose. The opening hole 56 has a rectangular shape, and its short side is designed to be shorter than the diameter of the positive electrode of the battery B, and the width is narrow so that the positive electrode of the battery B does not enter the terminal holder 50 side. . A battery B loaded in the battery holder 1 is shown on the left side of the terminal holder 50 shown in FIG. As shown in the drawing, the opening 56 formed in the terminal holder 50 of the present embodiment has a shorter width than the diameter of the positive electrode of the battery B.

  Thereby, when the battery B is loaded in the holder body 10, the positive electrode of the battery B abuts on the outer peripheral portion of the opening hole 56 without passing through the opening hole 56. It is not pushed more than necessary. Therefore, since the impact is not directly applied to the contact terminal 40, the contact portion 42 can be prevented from being deformed even when the battery B is attached or detached or the electronic device 100 is dropped.

  As described above, the battery holder 1 of the present embodiment has the two contact portions 42 having the vertexes of the V-shaped bent portions as contact points on both sides of the coil portion 41 through which the support shaft 51 is inserted. A contact terminal 40 made of a torsion coil spring obtained by bending a wire which is a metal wire is attached to a terminal holder 50 so as to be swingable.

  Thereby, the appropriate contact pressure between the batteries B can be easily obtained by adjusting the degree of expansion of the contact terminals 40. Moreover, since the shape of the contact part 42 is substantially V-shaped, when the battery B is attached or detached, the electrode part of the battery B can be smoothly attached and detached along the inclined part without being caught by the contact part 42. it can. Further, since the contact portion 42 of the contact terminal 40 is linear, the contact portion 42 and the battery B rub against each other to remove the oxide film, and fine sliding wear occurs at the contact portion between the contact terminal 40 and the battery B. Connection failure due to can be prevented in advance. Further, since the contact terminal 40 is formed by bending a metal wire, the contact portion is not deformed by an impact when the electronic device 100 is dropped like a leaf spring-like terminal.

  Further, since the terminal storage portion 52 of the terminal holder 50 is provided with a pair of ribs 54 that hold the contact portion 42 of the contact terminal 40 so as to sandwich the contact portion 40, the contact portion of the contact terminal 40 when the battery B is attached or detached. 42 can be prevented from moving in the axial direction of the support shaft 51.

  Further, since the width dimension of the opening hole 56 formed in the bottom surface of the terminal holder 50 is narrower than the diameter of the positive electrode of the battery B, the contact portion 42 is excessively pushed by the positive electrode when the battery B is loaded into the battery holder 1. There is nothing. Therefore, no direct impact is applied to the contact terminal 40 and deformation of the contact portion 42 can be prevented.

  Further, when the contact terminal 40 is accommodated in the terminal accommodating portion 52, the distal end 43 is accommodated in a state of being hooked on the distal end fixing protrusion 55 formed on the inner wall of the terminal accommodating portion 52 against the urging force of the contact terminal 40. The For this reason, when the contact terminal 40 swings, one tip 43 is hooked on the tip fixing projection 55 to restrict the swing range of the contact terminal 40, and the other tip 43 is prevented from protruding from the terminal holder 50. be able to.

DESCRIPTION OF SYMBOLS 1 ... Battery holder 10 ... Holder main body 11 ... Partition plate 20 ... Holding part 30 ... Intermediate terminal 40 ... Contact terminal 41 ... Coil part 42 ... Contact part 43 ... Tip 50 ... Terminal holder (50a ... Shaft hole)
DESCRIPTION OF SYMBOLS 51 ... Support shaft 52 ... Terminal accommodating part 53 ... E ring 54 ... A pair of rib 55 ... Tip fixing protrusion 56 ... Opening hole 100 ... Electronic device (100a ... Case)
101 ... Battery storage part (101a ... inner part)
102: Lid 103: Screw 104 ... Terminal B: Battery

Claims (5)

A holder body for holding batteries arranged in parallel so as to have reverse polarity;
A contact terminal having two contacts that are brought into contact with and in contact with the positive electrode of one battery held by the holder body and the negative electrode of the other battery;
A support shaft for supporting the contact terminal at a position between the contacts on one end side of the holder body;
A battery holder comprising: The contact terminal is
A torsion coil spring in which a coil portion through which the support shaft is inserted and a contact portion having contact points at the apexes of V-shaped bent portions provided on both sides of the coil portion are integrally formed from a single metal wire. The battery holder according to claim 1, wherein the battery holder is provided.   3. The battery holder according to claim 1, wherein a terminal holder having a rib for holding the contact terminal so as not to move in the axial direction of the support shaft is provided at one end of the holder body. On the bottom surface of the terminal holder is formed an opening hole for partially protruding the contact to the battery storage area side in the holder body,
3. The battery holder according to claim 1, wherein a dimension of the opening hole in a width direction is narrower than a diameter of the positive electrode of the battery.   3. The terminal holder is provided with a protruding member that engages with a tip of the contact terminal and restricts a swing range of the terminal so as not to protrude from the terminal holder. The battery holder as described.

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