DE7228304U - Battery chamber for holding and holding several batteries - Google Patents

Description

The invention relates to a battery chamber for receiving and holding a plurality of batteries in a predetermined orientation between the chamber walls, with a contact device for establishing an electrical connection with the battery poles. Battery chambers of this type are suitable as independent parts or as built-in components / for example for use in connection with photographic cameras which have a portable electric drive which requires batteries Γ to power it.

The known battery chambers or battery receptacles do not always hold the batteries sufficiently mechanically and / or do not make good, permanent electrical contact with the battery terminals. There are battery aun:,: - hmen known, at those to eliminate these disadvantages in mechanical holders the batteries on the one hand and two different ones to make the electrical contact on the other hand separate assemblies are provided. However, a relatively large space is required for this, so that the battery chamber Build relatively large in their external dimensions and are otherwise also heavy. This is especially true for portable ones Devices such as photographic cameras, radios or the like are disadvantageous.

In other known battery chambers in which springs are used for mechanical support and electrical contact making are used, it is necessary to connect the springs to each other via separate, electrically conductive parts, which either by mechanical connections, e.g. Be soldering or the like takes place, or in that the spring is pressed resiliently against electrically conductive parts. The mecha-

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nish verb? η! ί «ησ _; for example by soldering, requires a special, relatively complex operation and does not constitute a permanent connection. If the electrically conductive connection is only effected by resiliently pressing the spring against electrically conductive parts, there is a risk that this electrically conductive connection will make good contact. When using leaf springs as springs there is also no satisfactory arrangement, since the leaf springs z. B. are easily bent when inserting the batteries or lose their resilient behavior as a result of repeated insertion.

It is the object of the invention. a battery chamber for recording and to create a holder for multiple batteries that also provide a reliable, mechanically solid holder for the batteries repeated insertion and a good electrical contact, while taking up little space and has small external dimensions.

The object is achieved in a battery chamber of the aforementioned type according to the invention in that several \ J & n one end of the chamber in spaced springs, preferably helical springs, are provided of electrically conductive material, of 3enen more, preferably two a check between the two extending electrically conductive connecting piece integral therewith are connected to one another. A plurality of electrically conductive plates with integral contact surfaces can be provided at one end of the chamber and a plurality of electrically conductive contact pieces arranged at a distance from one another and movably arranged at the opposite end of the chamber, each of which is assigned to one of the springs that make the contact.

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spring-elastic contact pieces against assigned battery poles from in
the Kaituner press with their poles aligned with the Kentakt pieces insertable batteries. By the invention is
created a battery chamber with a contact device,
which, on the one hand, is a reliable,! mechanically firm and secure holding of the batteries and on the other hand a flawless electrical j

Ensures contact to the battery poles. The arrangement is also light and simple in construction. It shows only slight r

External dimensions. Therefore, the battery chamber t is suitable

according to the invention or the contact device alone
extremely good for portable devices, e.g. photographic
Cameras. Another advantage is that the battery chamber and /
or the contact device from a very small number
consists of individual parts, which are also easy to assemble in
of manufacture and storage, and which are standardized, interchangeable individual parts in different types of \

Battery chambers can be used. Because of the interchangeability
Any necessary repair work on the contact device ~ is possible and easy and cheap
feasible. ;

advantageous L

Further / details of the battery chamber according to the invention j emerge from the subclaims.

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ι ■

■ / IO

The invention is explained in detail below with reference to the exemplary embodiments shown in the drawings.

Show it:

Fig. 1 is a perspective view of a partially sectioned part of a battery receiving and Contact device according to a first embodiment, with the lid open /

Fig. 2 is an enlarged, exploded, perspective

tivische representation of a partially sectioned part of the device in Fig. 1,

3 shows a section along the line 3 - 3 in FIG. 1,

Fig. 4 shows a section along the line 4 - 4 in Fig. 1 with the lid closed,

FIG. 5 shows a perspective illustration of a spring of a battery receiving and contact device according to FIG a second embodiment, and

6 shows a section, corresponding to the section in FIG. 3, of part of the device according to the second exemplary embodiment with inserted spring according to Fig.

Since battery receiving devices and associated devices are known, in the following description in particular the parts that are part of the invention or are directly related to it, explained in more detail, while details not described further can be found in the prior art.

1 to 4 is a first embodiment of a battery receiving and contact device according to the invention for use in a motion picture camera.

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A battery chamber 10 is formed by side walls 12, 13, 14 and 15 and by end walls 16 and 18. The side walls 13 and 15 form a cover 20 which is movably attached to the camera housing by means of hinges 22a and 22b in order to prevent the cover from being inadvertently removed from the camera and then misplaced or lost. From Fig. 1 to 4 it can be seen that the end walls 16 and 18 and the side walls, that with the exception, ^di ^ the cover 20 form integral parts may be of the camera body.

The shape and size of the battery chamber 10 are selected so that the battery _{chamber is adapted to accommodate four AA-type batteries labeled B, B 2} , B and B, which can be arranged in two layers and two rows. The volume of the ßatteriekamraer 10 is preferably a little larger than the batteries to be accommodated in the battery chamber, so that the walls of the battery chamber serve to position and hold the batteries in a predetermined position within the battery chamber, as will be explained in more detail below . The inner surface of the side wall 14 preferably has two recessed surface parts 14a and 14b which are arranged at a V-stand from one another and in which the lower batteries B ₃ and B _{4 are} roughly cradled when they are inserted into the battery chamber. These recessed areas position these two lower batteries and determine their position very precisely. The recessed surface parts 14a and 14b have an essentially semi-cylindrical contour and are arranged so that their axes run approximately parallel to one another and extend over the length of the battery chamber.

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_{A plurality of movable battery contact pieces M, M 2} , M ₃ and M and a plurality of fixed contact surfaces F., F_, F, and F are provided on the inner surfaces of the ends of the battery chamber. The contact surfaces F and F ₂ and F ₃ , F. are each formed by projections on three electrically conductive plates 24 and 28 and 26, which are fastened to the end wall 18 and extend into the interior of the battery chamber 10. These fixed contact surfaces F. to F. are provided in order to establish electrical contact with the respectively assigned predetermined

Establish ν poles on each associated battery B. to B ₄ , if these are correctly and precisely inserted into the battery chamber 10. The two battery poles that come into contact with the contact surfaces F. and F ₂ are electrically connected to one another, since these two contact surfaces are formed on one and the same electrically conductive plate 24. On the other hand, the contact _{surfaces F 1} and F_ are electrically insulated from _{the contact surfaces F 3} and F, which are each provided on separate, electrically conductive plates 28 and 26, respectively. This can be achieved, for example, that the end wall 18 is made of insulating material or that the contact surfaces are attached to it in a suitable manner /

r ^ that the electrically conductive plates 24, 26 and 28 with each other are electrically isolated.

^T n Fiy. 2 shows a contact device or contact group 30 which has four openings 32a, 32L, 32c and 32d in the end face of the contact device 30. The openings 32a and 32b are intended to receive elongated, cylindrical parts of contact spring caps 34a and 34b, respectively. Each cap 34a, 34b has at one end a flange -36a or 36b, which has a larger diameter than the opening 32a or 32b and which prevents that when the batteries B ₂ or B ₄ are not in the battery chamber 10 are located,

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the contact spring caps 34a and 34b by the associated Slide the openings through and into the battery chamber '

can. A single spring 38 is provided, via which the caps 34a and 34b into their associated openings 32a or 32b in the contact device 30 and in the direction of j

the opposite «end wall 18 are pressed. The I

Spring 38 has two separate spring parts 38a and 38b which j

each at one end via a one-piece connector ' 38c are interconnected. Opposite the ends connected to the one-piece connector 38c the spring parts 38a and 38b each have free ends. The spring 38 j is arranged so that this free end of each spring part in an assigned hollow cylinder space inside each

because associated cap 34a or 34b is received when the contact device 30 is inserted into the battery chamber 10, as will be explained later, then press the spring parts 38a and 38b of the end wall 16 against the caps 34a and 34b, so that the Caps are pressed in the direction of the opposite end wall 18 and against the batteries B_ or B ₄ when the batteries are inserted into the battery chamber. In a similar way, contact spring caps 34c and 34d are provided which are received in associated openings 32c and 32d and are held in this position by means of spring parts 39a and 39b of a spring 39.

The contact device 30 is used with its complementary device parts in the battery chamber 10 and attached to the end wall 16 and held in position by a screw 40 or other suitable means. The battery contact device 30 then holds the individual parts of the device in the position described above.

In Fig. 1, the battery contact device 30 is shown in its inserted position in the battery chamber and also shows that the contact spring caps 34a to 34d extend through the openings 32a to 32d on the end face of the contact device 30 and in this position by means of the two springs 38 and 39 are held. The caps 34a to 34d are each individually movable relative to the contact device 30 due to forces exerted on the caps by the springs 38 and 39 and by the batteries. Exposed on the ends of the caps there are the portable battery contact pieces M ₁ to M _4, which serve to make electrical contact between the associated Poien of the batteries B ₁ to prepare to B _4, when they are properly inserted into the battery chamber 10 degrees.

In FIG. 3, two batteries B and B _{4 are} shown, which are inserted into the battery chamber 10. This is achieved by inserting the battery B- into the battery chamber 10 in such a way that the positive pole (upper end) of the battery presses against the contact piece M- of the cap 34b, and then pressing firmly against the lower end of the battery B ₄ pushes to compress the spring member 38b, thereby disengaging the lower end of the battery from the end wall 18, ie, being a short distance therefrom. The downward movement of the lower end of the battery B ₄ is continued until the battery comes into contact over its entire length with the recessed surface part 14b. Once the battery is in contact with the recessed surface part 14b, then the compressed spring part 38b of the spring 38 presses the movable contact piece M ₄ against the "positive pole (upper end) of the battery B ₄ and brings the negative pole (lower end) of the battery B ₄ in electrically conductive

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clock with the fixed contact surface F ₄ . If the battery B _{4 is} properly fitted, it is in firm contact with the recessed surface part 14b and, depending on the shape, with the side wall 12 and is held in firm physical contact with the contact piece M ₄ and the contact surface F ₄ , creating a good electrical Conductive contact with the plus and minus poles of the battery B _{4 is} made.

The battery B_ is inserted in a similar manner, the battery B- being held in the correctly inserted position in contact with the recessed surface part 14a and in firm contact with the movable contact piece M ₃ and the fixed contact surface F. Thereafter, the batteries B. and B ^ are introduced in a similar way and had in Kontak ⁴ - r.ait the respectively assigned movable contact pieces M. or M- and the fixed contact surfaces F ₁ and F ₃ , with them on the upper outer surfaces of the Batteries B ₃ or B _{4 are in place} . The battery B ₂ and, depending on the design of the side wall 12, also the battery B. then rest against the side wall 12. The batteries B ₃ and B ₄ are located in the associated recessed surface parts 14a and 14b, respectively.

After the batteries have been placed in the battery chamber 10 in this way, the lid 20 can be pivoted into its closed position by means of the hinges 22a and 22b, so that the batteries are thereby enclosed and held firmly in the interior of the battery chamber. The cover 20 can be held in its closed position by means of a known lock, not shown. Preferably, at least part of the inner surface of the cover 20 is covered with an elastic material 42 that touches the batteries B. to B _{3 in} order to press them against the walls 12 and 14, whereby the

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- io -

Batteries are pressed into firm contact with each other. The elastic material inside the Batteriekairjner 10 avoids lateral movement of the batteries in the battery chamber, thereby keeping the batteries in safe electrical contact. The elastic material also reduces rattling noises caused by lateral movement of the batteries in the Battery chamber can be caused.

In the first embodiment described, the batteries are arranged in staggered rows and layers in such a way that the one plane, which contains the central axes of the batteries B, B or B, B, lying one on top of the other, is opposite to the other plane, which contains the central axes of the batteries B., Β _Λ or B_, B. lying next to each other in a row r. , is offset by an angle that deviates from 90. In the exemplary embodiment shown, this angle is selected so that when the cover 20 is opened, the batteries are inclined away from the opening of the battery chamber towards the interior of the chamber and thus remain in a fixed position.

In FIGS. 5 and 6, a second exemplary embodiment of a battery receiving and contact device is described. In the second exemplary embodiment, as another embodiment of the springs shown in FIGS. 1 and 3, a spring 44 according to FIGS. 5 and 6 can be provided. From Fig. 5 it can be seen that the spring 44 has two spaced apart spring parts 46a and 46b which are integrally connected to one another. In Fig. 6 it is shown how the spring can be brought into the position in which contact surfaces 48a and 48b of the spring parts 46a and 46b make contact with the associated poles of the batteries B ₂ and B ₄ , and where-

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- 11 -

by contact spring caps provided in the first exemplary embodiment 34a and 34b are dispensable. With the spring inserted in this manner, the spring members 46a exercise and 46b of the spring exert spring forces in mutually parallel directions and press the contact surfaces 48a or 48b in firm contact with the assigned pole faces of the batteries B- or * B, and therefore keep the Batteries and also make electrical connections.

^v - The batteries B. / B ₂ , B, and B., when they are inserted into the battery chamber 10, can be optionally connected to one another in electrical parallel connection, series connection or series-parallel connection in order to achieve the voltage and current capacity that is required as a consumer for an electric motor that has been selected for use in the motion picture camera or another device. For use in a motion picture camera, the batteries can be connected electrically in series in order to produce an electrical potential between the electrically conductive plates 26 and, it then being possible to connect this electrical potential to the

Cj to lead terminals of the electric motor, not shown, of the camera.

If type AA is selected for each of the four batteries B ₁ to B ₄ , which therefore has about 1.5 V per cell, then a total of about 6 V is created when the four batteries are connected in series. If it follows the path of the electrical circuit in such a series connection, the electrically conductive plate 28 is _{in electrical contact via the contact surface F 3} with the positive pole of the battery B ₃ , the negative pole of which is in electrical contact with the contact piece M ₃ , via the spring 39 the movable contact piece M ₃ with the loaded

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- 12 -

movable contact piece M. electrically connected, its- i

on the other hand in electrical contact with the positive pole of ₍ battery B ₁ is. The negative pole of battery B ₁ is in]

electrical contact with the fixed contact surface F _{1 of} the;

electrically conductive plate 24, which is integrally and therefore electrically conductively connected to the fixed contact surface F ₂ . The positive pole of the battery B- is in contact with this fixed Kentakt area F ₂ , the negative pole of which is electrically connected - _n conductively with the movable contact piece M-.

The contact piece M _{2 is} electrically conductively connected to the other contact piece M ₄ via the spring 38, which is in electrically conductive contact with the positive pole of the battery B ₄ , which in turn is in electrically conductive contact with its negative pole with the fixed contact surface F ₄ , which is an integral part of the electrically conductive plate 26. The electrical circuit thus created and described above is used to create the desired electrical potential between the electrically conductive plates 26 and 26, which, as explained above, are electrically isolated from one another. The electrical potential available in this way can be fed to an electric motor of a motion picture camera, for example, via suitable circuit means.

Although the invention above for a special application which requires four AA batteries, for example for a motion picture camera, understands It will be understood that the invention is capable of various other uses, as well as a variety of others Battery types can be used .. ___ ,, ._

Claims (7)

- 13 - Claims for protection 1. Battery chamber for holding and holding several batteries in a predetermined alignment between the chamber walls, with a contact device for producing an electrical Connection to the battery poles, characterized in that several at a chamber end (16) at a distance _ springs arranged from one another, preferably screw ^ springs (38a, 38b), made of electrically conductive material are, several of which, preferably two each via an extending between the two, integral with these τ electrically conductive connecting piece (38c) with one another are connected. 2. Battery chamber according to claim 1, characterized by a plurality of electrically conductive plates (24,26,28) arranged at one end of the chamber (18) with integral contact surfaces (F., F “or F or V) and by several on the opposite one Chamber end (16) at a distance from one another and movably arranged, electrically conductive contact pieces (M ₁ (2 to M ₄ ), each one of the springs (38a or 38b or 39h or 39b) are assigned, which the contact pieces up to M.) resiliently against assigned battery poles in the chamber (10) with their poles in relation to the contact pieces (M ₁ to M
Press (B. to B.). to M.) resiliently against assigned battery poles from .e
clock pieces (M. to M.) aligned insertable batteries - 14 - »R ¹ /. - 14 - 3. Battery chamber according to claim 1 or 2, characterized in that a Krjronerwand (14) has at least one semi-hollow cylindrical curved surface part (i4a, l4b) in which a battery (B ₃ or B.) can be embedded with part of its circumferential surface and in Can be aligned with respect to the associated contact piece (M ₃ or M _4). 4. Battery chamber according to einiim of claims 1 to 3, marked by a pivotably held, an access opening to the battery chamber (10) closing Cover (20). 5. Battery chamber according to claim 4, characterized in that that at least on part of the inside of the lid (20) a layer of elastic material (42) is provided is. 6. Battery *: iekammer according to one of claims 1 to 5, for cylindrical batteries which can be arranged in rows next to one another and in layers one above the other, characterized in that the chamber walls (12 to 16, 18) are aligned with one another in such a way that when in the chamber ( 10) batteries used (B. to B.) a plane that contains the longitudinal center axes of the batteries lying one above the other (B ₁ , B ^ or B ₂ * B ₄ ) of a layer, opposite a plane that contains the longitudinal center axes of the batteries lying next to one another (B. , B ₂ or B ₃ , B ₄ ) of a row, is inclined at an angle other than 90 and that this angle is chosen so that the batteries (B ₁ to B ₄ ) are inclined away from the chamber opening towards the interior of the chamber and are held firmly in the chamber (10) even when the cover (207) is moved into the open position. - 15 - 7. Battery chamber according to claim i. » characterized, that the contact device (30) has openings (32a, 32b, 32c, 32d) provided at a distance from one another in a wall Schr, outside ~, to each of which one of the springs (38a, 38b, 39a, 39b) is assigned that an electrically conductive contact spring cap (34a, 34b, 34c, 34d) is provided for each opening, which has a hollow cylindrical through the Shaft which can be pushed through the opening, an end part which closes the shaft at one end and forms a contact piece (M. to M.), which extends into the chamber when the shaft extends through the opening and with one pole of a battery (B. to B _A ) in conductive contact, and has a flange (36a, 36b) opposite the end part, protruding radially over the shaft and having a larger diameter than the opening (32a, 32b) to secure the contact spring cap against slipping through the associated opening, and that each contact spring cap ( 34a _f 34b) associated spring (38a or 38b) with its free end from the end of the shaft having the flange (36a, 36b) can be inserted into the shaft and placed against the end part of the shaft d presses the contact spring cap with the (_ contact piece resiliently against one pole of a battery. 722830423.11.72