DE202019002101U1 - Wheelchair lighting control unit - Google Patents

Abstract

A wheelchair lighting control unit (1), comprising: a. a housing (10); b. a control electronics (28) for controlling at least one LED lamp of a wheelchair, wherein the control electronics in the housing (10) is arranged; and c. a power source (40) for powering the wheelchair lighting control unit (1); d. wherein the housing (10) has a voltage source compartment (14) for receiving the voltage source (40), which is always open on a side wall of the housing (10), so that the voltage source (40) can be inserted into the voltage source compartment (14) and can be pulled out of it e. wherein the voltage source (40) in the voltage source compartment (14) is releasably held in the inserted position by means of at least one magnet (70, 72).

Description

Technical area

The present invention relates to a wheelchair lighting control unit for wheelchair lighting and a wheelchair having such a wheelchair lighting control unit.

State of the art

Wheelchairs are technical aids that enable a person with reduced mobility to be autonomously mobile in a larger environment. A wheelchair can be designed as a manual or electric wheelchair. With a manual wheelchair, the wheelchair user drives the two large wheels of the wheelchair himself with his arms. In an electric wheelchair, the wheelchair user only needs to operate a corresponding control device on the wheelchair in order to move the wheelchair. An electric motor on the wheelchair then takes over the drive of the wheels.

The electric motor on the wheelchair is powered by a power source, which is also located on the wheelchair. This power source is usually a rechargeable battery. Due to the existing power source, electric wheelchairs often have lighting to increase the visibility and road safety of the electric wheelchair. The lighting is often attached to the side armrests of the wheelchair and radiates essentially light forward so that the wheelchair user is visible from afar.

The movement of the wheelchair depends essentially on the characteristics of the floor on which the wheelchair is moved. A comfortable movement of the wheelchair is usually possible on flat surfaces such as asphalt or paved roads and sidewalks. Small bumps on the way are e.g. dampened by the rubber tires of the wheelchair and can be run over. However, larger bumps, such as potholes or larger stones, lead to a significant comfort restriction and can in the worst case lead to tipping over of the wheelchair. In particular, in limited or poor visibility conditions, such as at dusk or in the dark, such bumps can pose a serious threat to the wheelchair user.

Therefore, there are also various concepts for equipping manual wheelchairs with bulbs. With electric wheelchairs, the lighting is supplied by the power source of the drive. However, manual wheelchairs have no drive and consequently have no power supply. For the supply of the bulbs, therefore, a power source must be provided.

For example, the document shows CN 104 905 917 A a lighting for a wheelchair in which the power supply is integrated locally in the respective lighting means. Therefore, a change or charging of batteries or batteries is cumbersome and usually not by the user of the wheelchair itself feasible.

In addition to the power source, lights for a wheelchair have an electrical switch to turn the lights on and off. As from the above-mentioned document CN 104 905 917 A As can be seen, these switches are often attached to the lighting means themselves. Therefore, even turning on or off the lighting means may be unergonomic or even impossible for more limited users, so that such lighting means are not usable in practice.

It is therefore an object of the present invention to provide a power supply for a lighting of a wheelchair which overcomes the above problems.

Summary of the invention

The above-mentioned problems are solved according to the invention by a wheelchair lighting control unit according to claim 1.

In particular, the above-mentioned problems are solved by a wheelchair lighting control unit comprising a housing, control electronics for controlling at least one LED lamp of a wheelchair, wherein the control electronics are arranged in the housing, and a power source for powering the wheelchair lighting control unit, said Housing a voltage source compartment for receiving the voltage source, which is always open on a side wall of the housing, so that the voltage source can be inserted into the voltage source compartment and can be pulled out of this, wherein the voltage source in the voltage source compartment by means of at least one magnet in the inserted position is kept releasable.

Through the lateral opening in the housing of the wheelchair lighting control unit, the power source can be easily removed by the user and then connected in the field of view of the user to a charging cable or placed on a charging station to charge the preferably rechargeable power source. Because the power source is easily removed can be, the wheelchair lighting control unit can be mounted in a preferred manner below the seat of the wheelchair. A direct view of the wheelchair lighting control unit is therefore not necessary. Connecting a charging cable to a fixed power source in the wheelchair lighting control unit, which would be difficult for users with limited motor skills of the hand, can be avoided.

The fixation of the voltage source in the voltage source compartment by at least one magnet, in particular a permanent magnet, preferably a neodymium permanent magnet, saves the user an active actuation of a release device, something loosening of detents, etc .. In addition, a pulling out and pushing the voltage source in the unilaterally open power source compartment even without direct view of the wheelchair lighting control unit by persons with limited hand motor skills feasible, and much easier than about the positioning of a charging cable to a poorly visible connector. Overall, therefore, a replacement or charging a power source of a wheelchair lighting system in a simple and secure way by the user itself possible. In particular, the user can pull the voltage source with only one finger from the power source tray.

Despite the easy changeability of the voltage source, by pulling and pushing into the voltage source compartment, it is held by the at least one magnet, while using the wheelchair, sufficiently strong and durable. Due to the configuration of the magnet, a precisely defined magnetic holding force can be generated, which securely holds the voltage source in the wheelchair lighting control unit and thus ensures their functionality. In particular, the power source in the wheelchair lighting control unit is secured and fixed against vibration during operation. Preferably, the magnet is designed so that a tensile force of about 15 to 40 N, more preferably from 20 to 30 N is required to pull the voltage source out of the voltage source compartment. The at least one magnet may further preferably prevent the voltage source from rattling in the voltage source compartment in the event of vibrations.

In particular, the voltage source is a rechargeable voltage source containing one or more accumulators and provides power to the control electronics and the at least one LED light connected thereto. The control electronics used at least to turn on and off the LED light and can have more functions to control the wheelchair lighting.

The housing also protects the control electronics from shocks, dust, moisture and other influences and is therefore waterproof or at least splash-proof. In this case, in particular, the part of the housing which contains the control electronics is sealed off from the open voltage source compartment.

Preferably, the at least one magnet is combined with the electrical connection of the voltage source to the control electronics. Accordingly, no separate magnet must be used, but it can be used an electrical contact terminal, which already contains at least one magnet. This simplifies the assembly of the wheelchair lighting control unit.

Preferably, the at least one magnet is arranged on an end wall of the voltage source or on the closed end of the voltage source compartment. Thus, the attraction of the at least one magnet at the end of the insertion of the voltage source into the voltage source compartment acts.

Preferably, at least two counter-pole magnets are provided, wherein a magnet is arranged on the voltage source and a magnet on the voltage source compartment so that the two magnets tighten when the voltage source is in the inserted position. By using two magnets, the force of attraction can be increased. Alternatively, only one magnet is provided which cooperates with a ferromagnetic counterpart.

Preferably, the voltage source compartment further comprises at least one spring element, which is biased from the outside against a side surface of the voltage source. In addition, the voltage source can also be held by a spring element in order to reinforce the fixation of the voltage source in the voltage source compartment.

Preferably, the fixation is based by the spring element substantially on the principle of friction. Alternatively or additionally, the spring can also engage in recesses on the outside of the voltage source.

Preferably, the at least one spring is configured as a band spring, which has a wave-shaped cross section. Compared with other forms of expression of a spring, the band spring is comparatively narrow and can thus be easier to accommodate in or at the voltage source compartment. In addition, the wavy shape of a ribbon spring allows the voltage source on the spring to be light can slip past. Due to the undulating shape, the spring effect can also be adjusted and permanently maintained without premature signs of fatigue being expected.

Preferably, the at least one spring is formed integrally with the voltage source compartment and replaces a part of the wall of the voltage source compartment. This can be dispensed with a complex connection and a complex installation of a separate spring on the inside of the voltage source compartment. In addition, the spring and the voltage source compartment need not be manufactured separately, which reduces the manufacturing cost.

Preferably, the voltage source compartment on two spring elements which are arranged at an angle to each other and are biased from the outside against two different side surfaces of the voltage source. Due to the different orientation of the springs, the voltage source is pressed against two opposite to the springs inner surfaces of the voltage source compartment and thus assumes a defined position. This ensures that the voltage source is electrically connected to the control electronics at each insertion process via an electrical plug connection at the closed end of the voltage source compartment. Since the two springs assume accurate positioning of the voltage source, the voltage source compartment can be designed with some play relative to the voltage source, thereby simplifying the insertion and extraction of the voltage source into and out of the voltage source compartment for the user.

Preferably, the at least one spring is made in one piece with the voltage source compartment. Particularly preferably, the at least one spring made of a plastic material is injection-molded in one piece with the voltage source compartment. The fact that the spring is produced in one piece with the voltage source compartment, in particular injection-molded from a plastic material, can be dispensed with a separate production and assembly of a spring. Plastic is particularly suitable as a material for the spring, since its elastic properties can be selected by targeted selection of a suitable plastic material. Thus, a spring can be provided with a well-defined spring force. Furthermore, a production by an injection molding process is particularly well suited for the production of a housing with complex geometry and in high quantities. In addition, a spring made of plastic material is particularly resistant to corrosion.

Preferably, the at least one spring forms an externally visible part of an outer wall. Thus, the spring also forms part of the outer wall of the voltage source compartment, so that at this point no additional wall region of the voltage source compartment is required. As a result, the complexity of the housing is kept as low as possible, eliminating the expense of additional components and possible assembly steps. In addition, the condition of the springs can be checked by a visual inspection.

Preferably, the at least one spring in cross-section at least three circular arc sections, which are arranged alternately convex and concave, wherein the second circular arc portion is concave from the outside and is aligned against the side surface of the voltage source. Such a configuration is particularly well suited for a permanent spring for holding the voltage source.

Preferably, a film having a frictionless surface is arranged on a surface of the at least one spring facing the voltage source. Due to the low-friction surface of the film, the frictional resistance when inserting the voltage source into the voltage source compartment and the force required with it are reduced. Thus, the required force can be set accurately.

Preferably, the spring element is configured as a wire bow and simultaneously biased on opposite side surfaces of the voltage source. By the wire hanger, the spring action of the spring element can be adjusted very accurately. This results on the one hand a particularly reliable fixation of the voltage source and on the other hand, it can still be easily pulled out of the power source tray.

Preferably, the control electronics comprises a board, are arranged on the cable clamps or connectors for tool-free contacting of electrical lines to the at least one LED light. By cable clamps or connectors, preferably jack sockets, for tool-free contacting of electrical lines, the wheelchair lighting control unit can be easily connected via electrical cables or cables to LED lights that are attached to the wheelchair at a suitable location.

Preferably, films with a low-friction surface are arranged on the inside of the voltage source compartment. Due to the low-friction surface of the film on the inside of the voltage source compartment, the frictional resistance when the voltage source is inserted into the voltage source compartment and the force required with it is reduced and can be set precisely.

Preferably, the housing has an insertion bevel adjacent to the opening of the voltage source compartment. This chamfer allows a greater tolerance when attaching the voltage source to the open end of the voltage source compartment and thus allows an introduction of the voltage source in the voltage source compartment even without direct eye contact on the open end. Furthermore, the greater tolerance when connecting the voltage source supports the use by users with limited motor skills.

Preferably, electrical contacts, in particular plug contacts or magnetic contacts, are arranged for the electrical connection of the voltage source to the control electronics at the closed end of the voltage source compartment. Through this position, the contacts are largely well protected by the housing from external influences such as dirt. In addition, an automatic contacting takes place after the complete insertion of the voltage source into the voltage source compartment. If magnetic contacts are used, their magnetic attraction serves simultaneously for electrical contacting and mechanical fixation of the voltage source in the voltage source compartment.

The voltage source preferably has a cuboid power source housing which has rounded edges. These rounded edges facilitate easy insertion of the voltage source into the voltage source compartment and also reduce the risk of injury when handling the voltage source.

The voltage source preferably has an LED state of charge indicator, a magnetically connectable charging connection and a socket for the electrical connection of the voltage source to the control electronics. By using a magnetically connectable charging port, it is possible to charge the power source by means of a cable without the user having to fit a charging plug into a charging socket. The magnetically connectable charging port is preferably positioned by magnetic attraction by itself, so that a precise alignment can be omitted. This allows a user with limited hand motor power to charge the voltage source.

The voltage source preferably has a loop, in particular a band loop, for pulling out the voltage source from the voltage source compartment. Through the belt loop, the position of the power source below the seat is easy to feel. In addition, the loop or strap loop is easy to grip and is particularly suitable for users with limited motor skills of the hand. In addition, a loop or loop does not pose a risk of injury, particularly if the loop or loop is made of a textile material.

Preferably, the loop or the voltage source housing on the outside of an optical marking, which optically identifies the top of the voltage sources. The optical marking allows the correct orientation of the voltage source before insertion into the voltage source compartment and thus ensures successful contacting of the voltage source with the electrical connection at the closed end of the voltage source compartment. By placing an optical mark on the top of the loop, the correct orientation can also be recognized well from the sitting position of the user.

Preferably, the voltage source has a handle for withdrawing the voltage source from the voltage source compartment, the handle preferably having an opening extending substantially vertically through the handle. The handle makes it particularly easy to pull the power source out of the power source compartment. The opening favors by its vertical orientation in this case, the withdrawal also for users with mobility limitations of the hand. In the vertical opening can be easily inserted from above a finger to grip the power source and pull out or bring.

Preferably, the voltage source comprises a USB power bank, which is integrated in the power source housing, wherein the terminals of the USB power bank are electrically connected to the magnetically connectable charging port and the socket, in particular electrically connected via electrical connectors. Using a self-contained USB power bank reduces the development and manufacturing overhead of a voltage source, as features such as a charge status indicator and charge and discharge control are already integrated into the USB power bank.

The voltage source preferably has a mechanical button which can actuate a charge status button of the USB power bank and which is actuated by the voltage source compartment during insertion and withdrawal of the voltage source into and out of the voltage source compartment. The mechanical button allows activation of the charge status display of the USB power bank by the voltage source compartment. By activating the charge status indicator when pulling out of the mechanical buttons are no longer wanted by the user and operated separately.

The power source housing preferably has at least one window through which the LED charge status display of the USB power bank is visible.

Preferably, the housing has an openable lid and has a non-conductive cover below the lid, which covers the control electronics except for the region of the terminals from above. The non-conductive cover underneath the openable cover makes it possible to connect power cables of LED lighting to the terminals without coming in contact with the sensitive control electronics. Accidental damage to the control electronics is thus prevented.

Preferably, the housing further comprises eyelets for attaching the wheelchair lighting control unit to a wheelchair. By means of the eyelets, the wheelchair lighting control unit can be easily and securely attached to a component of the wheelchair. Particularly advantageous so that the wheelchair lighting control unit can be fixed by means of cable ties to the good of a seat covering a wheelchair.

Preferably, the eyelets are made in one piece with a part of the housing made of a plastic material. In particular, the eyelets are injection-molded in one piece with the lower housing part. Thus, no further assembly step for attaching the eyelets on the housing is necessary.

Preferably, the housing further has at its edge a plurality of recesses for attachment of the wheelchair lighting control unit to a wheelchair. The indentations may be gripped by means of appropriate clips or other fastening means to secure the wheelchair lighting control unit securely to the wheelchair. Preferably, a plurality of recesses are provided, so that in this case a geometric variability is given in the attachment.

The voltage source compartment preferably has at least one rib extending in the direction of insertion, which corresponds to at least one groove on the upper side of the voltage source in order to ensure a clear orientation of the voltage source in the voltage source compartment.

list of figures

• 1 eine perspektivische Ansicht von vorn einer ersten bevorzugten Ausführungsform der Rollstuhlbeleuchtungs-Steuerungseinheit;
• 2 eine Ansicht von oben auf die Ausführungsform der Rollstuhlbeleuchtungs-Steuerungseinheit aus 1;
• 3 eine Explosionsansicht der Ausführungsform der Rollstuhlbeleuchtungs-Steuerungseinheit aus 1;
• 4 eine perspektivische Ansicht von vorn einer bevorzugten Ausführungsform einer Spannungsquelle;
• 5 eine Explosionsansicht einer Ausführungsform der Spannungsquelle aus 4;
• 6 eine perspektivische Ansicht von vorn einer zweiten bevorzugten Ausführungsform der Rollstuhlbeleuchtungs-Steuerungseinheit;
• 7 eine Ansicht auf die Oberseite der Ausführungsform der Rollstuhlbeleuchtungs-Steuerungseinheit der 6; und
• 8 eine perspektivische, transparente Ansicht einer dritten bevorzugten Ausführungsform der Rollstuhlbeleuchtungs-Steuerungseinheit, wobei ein Deckel aus Darstellungsgründen entfernt wurde;
• 9 eine Draufsicht der Rollstuhlbeleuchtungs-Steuerungseinheit nach 8;
• 10 eine Draufsicht der Rollstuhlbeleuchtungs-Steuerungseinheit nach 8, mit eingeschobener Spannungsquelle;
• 11 eine perspektivische Ansicht einer weiteren Ausführungsform einer Spannungsquelle; und
• 12 eine Frontansicht der dritten Ausführungsform der Rollstuhlbeleuchtungs-Steuerungseinheit.

Hereinafter, preferred embodiments of the present invention will be illustrated with reference to the accompanying drawings. Showing:

• 1 a front perspective view of a first preferred embodiment of the wheelchair lighting control unit;
• 2 a view from above of the embodiment of the wheelchair lighting control unit 1 ;
• 3 an exploded view of the embodiment of the wheelchair lighting control unit 1 ;
• 4 a front perspective view of a preferred embodiment of a voltage source;
• 5 an exploded view of an embodiment of the voltage source 4 ;
• 6 a front perspective view of a second preferred embodiment of the wheelchair lighting control unit;
• 7 a view on the top of the embodiment of the wheelchair lighting control unit of 6 ; and
• 8th a perspective, transparent view of a third preferred embodiment of the wheelchair lighting control unit, wherein a cover has been removed for the sake of illustration;
• 9 a plan view of the wheelchair lighting control unit after 8th ;
• 10 a plan view of the wheelchair lighting control unit after 8th , with inserted voltage source;
• 11 a perspective view of another embodiment of a voltage source; and
• 12 a front view of the third embodiment of the wheelchair lighting control unit.

Detailed description of preferred embodiments

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows a three-dimensional view of a wheelchair lighting control unit 1 for controlling a LED wheelchair lighting (not shown). The wheelchair lighting includes next to the wheelchair lighting control unit 1 prefers a front white glowing LED light, a rear red glowing LED lights and possibly other LED lights that illuminate the wheelchair in other places. These LED lights (not shown) are via electrical lines to the wheelchair lighting control unit 1 connected and are controlled by this suitable.

The wheelchair lighting control unit 1 includes a housing 10 that has an electronic control system 28 surrounds and a voltage source 40 to the power supply. The voltage source 40 is preferably a rechargeable voltage source and a voltage source compartment 14 insertable, the part of the housing 10 is and on a side wall of the housing 10 is open.

The housing 10 is injection-molded from a plastic and has a removable lid 12 and a lower part 13 on. The lid 12 in particular by screws 11 with the lower part 13 releasably connected. In the embodiment of the 1 forms the lid 12 an entire surface of one side of the housing 10 , The lid 12 preferably forms the underside of the housing 10 because the wheelchair lighting control unit 1 preferably by means of the lower part 13 can be attached from below to the seat of a wheelchair. In the embodiment of the 1 includes the lid 12 also a wavy band spring 18 , the integral part of the lid 12 and thus of the housing 10 is.

In an alternative embodiment (not shown) are the complete power source compartment 14 and the two wavy band springs 16 and 18 integral part of the base 13 of the housing 10 , The lid 12 covers in this embodiment substantially only the range of control electronics 28 from.

The feathers 16 and 18 are preferred as band springs 16 and 18 formed and have a wavy cross-section. The wave-shaped cross section of the band springs 16 and 18 may consist of three or more, for example five, alternately arranged circular arc sections. In the illustrated embodiment, the cross section consists of five continuously merging circular arc sections. The circular arc sections are arranged alternately concave and convex. In this case, a central circular arc section is preferably concave, as seen from the outside, so that the central region of the band springs 16 and 18 the voltage source 40 touched. This practice the band springs 16 and 18 a defined force on the voltage source 40 on.

Preferably, the springs form 16 and 18 externally visible parts of outer walls of the housing 10 , In an alternative embodiment, the springs 16 and 18 on insides of closed outer walls of the housing 10 in the area of the voltage source compartment 14 arranged. This is the voltage source 40 better protected against splashing water.

In another embodiment, the springs 16 and 18 made of a spring steel sheet on the housing 10 is attached. In particular, the springs can 16 and 18 on two insides of the power source compartment 14 be attached.

The housing 10 is mounted to the seat of the wheelchair (not shown) that the lid 12 facing the ground. Here shows one with the voltage source 40 connected loop 64 with her upper side 68 to the user. The loop 64 is preferred as a belt loop 64 preferably consists of a flexible band, fabric, felt or leather and serves the user for easy withdrawal of Spannungsquelles 40 out of the case 10 , The band loop 64 protrudes from the case 10 out and preferably over the seat of the wheelchair out, so that the user even when seated, the voltage source 40 at the strap loop 64 can pull out. By means of an optical marking on the upper side of the belt loop 68 will give the user the correct insertion position of the voltage sources 40 displayed. Additionally or alternatively, an optical marking, such as a logo or the like, also on the upper side of the housing 44 . 46 the voltage source 40 to be appropriate.

2 shows a view of the wheelchair lighting control unit 1 from the 1 when removed cover 12 , The lower part 13 of the housing essentially comprises two areas; an area containing the voltage source compartment 14 forms and an area for receiving a control electronics 18 , The control electronics 28 serves the electrical control of the wheelchair lighting. The control electronics, can be a circuit board 30 and other electronic components 31 respectively. On the board 30 is the logic circuit and other components of the control electronics 18 arranged. For connecting cables to LED lights (not shown), the board 30 three cable clamps 32 on, with which the lines can preferably be clamped without tools. To protect the electronics on the board 30 a non-conductive cover (not shown) may be provided, with the exception of the three cable clamps 32 , the entire top of the board 30 covers.

Is the voltage source located 40 in the voltage source compartment 14 , he will have a plug connection 26 on the housing 10 with the control electronics 28 electrically connected. The connector 26 is located at the closed end of the power source compartment 14 to completely insert the voltage source 40 into the voltage source compartment 14 an electrical contact with a socket 52 at the voltage source 40 manufacture.

The voltage source 40 becomes in the voltage source compartment 14 especially magnetically held. For this purpose, preferably two magnets 70 . 72 provided, the opposite polarity at the voltage source 40 and at the appropriate place on the power source compartment 14 are arranged so that they attract each other. Alternatively, one of the magnets 70 . 72 omitted and replaced by a ferromagnetic counterpart. As shown, the magnet 72 on the back wall of the power source compartment 14 arranged, however, the magnet can 72 also in other places of the voltage source compartment 14 be arranged, it should only be ensured that the corresponding magnet 70 at the voltage source 40 in the fully inserted state is sufficiently magnetically attracted.

3 shows a three-dimensional exploded view with the exempted components of the wheelchair lighting control unit 1 the 1 , The control unit 28 can by screws 11 in the case 10 be attached. The housing 10 can be in the area of the board 30 an opening 15 on the side of the open end of the power source compartment 14 by the further functions of the wheelchair lighting control unit 1 can be realized. In the case 10 are located opposite the cable clamps 32 three more openings 15 to carry the wires or cables to the LED lights, with the openings 15 for sealing with rubber grommets 17 are equipped.

The inner surfaces of the power source compartment 14 and the band springs 16 and 18 are at least partially with low-friction films 22 and 20 covered the friction between voltage source compartment 14 or band springs 16 and 18 and the voltage source 40 reduce when inserting and removing. Through the material of the films 10 . 22 can the friction that the voltage source 40 in the case 10 holds even more precisely defined and adjusted. Depending on the material of the springs 16,18, the voltage source compartment 14 and the housing 44 . 46 the voltage source 40 Can the low-friction films 20 . 22 also omitted.

4 shows a three-dimensional view of the voltage source 40 , To the voltage source 40 are a charging port 56 for charging the voltage source 40 and a plug connection 52 attached to the supply of the control unit 28 used with electricity. The charging port 56 Preferably, a magnetic charging port, which is connectable to a corresponding magnetic charging cable (not shown) via magnetic attraction, provides an easy-to-handle connection and a simple charging of the voltage source 40 to allow for limited hand motor skills of the user. The magnetic charging connection may also be preferred 56 for magnetic fixation of the voltage source 40 in the voltage source compartment 14 serve. This is the magnet 72 or a ferromagnetic counterpart corresponding to the back wall of the power source compartment 14 arranged.

The voltage source 40 also has a charge status indicator 60 on, which can be indicated by four flashing LED lights, the current state of charge. About a button 50 on the outside of the voltage source 40 can the charge status indicator 60 to be activated. This is preferably done when pulling out and / or inserting the voltage source 40 , where the button 50 through the inside of the power source compartment 14 is pressed.

5 shows a three-dimensional exploded view of the voltage source 40 out 4 with released components. The voltage source 40 has a housing with an upper shell 44 and a lower shell 46 on, which are preferably screwed together. In the case 44 . 46 In one embodiment, it is a USB power bank 42 including the actual accumulator cells and a charging electronics (not shown).

About a button 48 the USB power bank 42 can its charge status indicator 62 to be activated. Through a transparent viewing window 58 from a plastic material of the charge status indicator 60 is the state of charge of the USB power bank 42 through the housing 44 . 46 visible to the outside.

In another embodiment of the voltage source 40 (not shown), this has no USB power bank, but its own charging electronics and its own battery cells for storing the electrical energy.

In both embodiments, the voltage source 40 Furthermore, an additional charging state electronics (not shown), the voltage at the connector 52 measures and the control electronics 28 tells, so that this the current state of charge of the voltage source 40 can determine.

How out 5 further evident, fixed a band clamp 65 the strap loop 64 , where the tape clamp by two screws 67 in the lower shell 46 is attached.

The magnetic charging port 57 is through a USB adapter 57 provided in a micro USB socket 45 the USB power bank 42 is plugged in. The USB adapter 57 gets stuck between the upper shell 44 and the lower shell 46 stored.

To discharge electricity is in a USB socket 43 the power bank 42 a USB plug 54 plugged in and electrically with the socket 52 contacted, located on the outside of the voltage source 40 located.

The 6 and 7 show a further preferred embodiment of the wheelchair lighting control unit 1 extending from the wheelchair lighting control unit 1 the 1 to 5 only it differs in that the housing 10 preferably four eyelets 19 on its outside. The eyelets 19 serve to attach the wheelchair lighting control unit 1 on a wheelchair. In particular, the wheelchair lighting control unit 1 in a simple but safe way by means of cable ties in the eyelets 19 be inserted, attached to straps a seat covering a roll chair. The eyelets 19 are preferably in one piece with the lower part 13 of the housing 10 injection molded and stand from this side to the outside.

The 8th - 12 show a third preferred embodiment of the wheelchair lighting control unit 1 , The third embodiment corresponds in its basic structure and its functionality to the already described first and second embodiments.

The third embodiment of the wheelchair lighting control unit 1 differs from the other embodiments, first by their shape and the design of the housing 10 and the spring element 76 ,

The spring element 76 is here designed as a substantially U-shaped bent wire hanger, by clipping in the lower part 13 of the housing is attached. The spring element 76 can be on opposite side surfaces of the voltage source 40 Press and these in the voltage source compartment 14 fix, as in 10 seen.

Furthermore, in the third embodiment, a magnetic terminal 53 or magnetic contacts 53 for the electrical connection between the voltage source 40 and the control unit 28 intended. The magnetic connection 53 or the magnetic contacts 53 serve due to their magnetic attraction of the respective elements for magnetic fixation of the voltage source 40 in the voltage source compartment 14 , Accordingly, the magnetic connection forms 53 magnets 70 . 72 out.

Furthermore, in the third embodiment, connectors 34 designed for easy connection of cables or cables to the LED lights on the board 30 the control unit 28 serve.

In addition, the power source compartment has 14 in the insertion direction extending ribs 86 on, the grooves 48 on top of the voltage source 40 correspond (s. 10 and 11 ) to a clear orientation of the voltage source 40 in the voltage source compartment 14 to ensure. For this purpose, the arrangement of the ribs differs 86 in the lower part 13 of the housing 10 of ribs 86 in the lid 12 of the housing 10 , allowing for insertion of the voltage source 40 only with correct orientation is possible (Poka Yoke principle).

As in 10 and 11 shown, indicates the voltage source 40 instead of a strap loop 64 now a firm grip 80 made of a plastic material. The handle 80 is by means of a hinge 84 swiveling on the housing of the voltage source 40 appropriate. As can be seen, the handle is 80 essentially flat and aligned horizontally. The handle 80 still has an opening 80 on, for easy removal of the voltage source 40 serves and essentially vertically through the handle 80 passes through when the voltage source 40 into the voltage source compartment 14 is used.

Finally, the case faces 10 the third embodiment at the edge of the lower part 13 and on the edge of the lid 12 a variety of opposite bulges 74 on. In these bulges 74 For example, brackets (not shown) or other fasteners may engage the wheelchair lighting control unit 1 to attach to a wheelchair. The variety of bulges 74 allows a variety of different mounting options.

As in 10 and 12 shown, the power source compartment 14 by far a seal on its back wall 78 made of an elastomeric material to the electrical contacts of the voltage source 40 and the power source compartment 14 to protect against environmental influences.

LIST OF REFERENCE NUMBERS

1

Wheelchair lighting control unit

10

casing

11

Screws in the housing

12

cover

13

Lower part of the housing

14

Voltage source specialist

15

Opening in the housing

16

Spring side

17

Rubber grommets for sealing the housing

18

Feather above

19

eyelets

20

low friction foil on spring

22

low-friction film on voltage source compartment inside

24

chamfer

26

plug contact

28

control unit

30

circuit board

31

electronic components

32

cable clamps

34

Connectors

40

voltage source

42

USB Power Bank

43

USB port

44

upper power source housing shell

45

Micro USB connector

46

lower power source housing shell

48

groove

57

adapter

48

Charging status button

50

mechanical buttons

52

Socket with electrical connection to the control electronics

53

magnetic connection / magnetic contacts

54

USB plug

56

magnetic charging adapter

58

window

60

Charge level indicator of the voltage source

62

Charge level indicator of the power bank

64

tape loop

65

band clamp

66

lower side of the strap loop

67

Screw the voltage source

68

upper side of the strap loop

70

Magnet to voltage source

72

Magnet to voltage source compartment

74

indentations

76

spring element

78

poetry

80

Handle

82

opening

84

hinge

86

ribs

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• CN 104905917 A [0006, 0007]

Claims (30)

Wheelchair lighting control unit (1), comprising: a. a housing (10); b. a control electronics (28) for controlling at least one LED lamp of a wheelchair, wherein the control electronics in the housing (10) is arranged; and c. a power source (40) for powering the wheelchair lighting control unit (1); d. wherein the housing (10) has a voltage source compartment (14) for receiving the voltage source (40), which is always open on a side wall of the housing (10), so that the voltage source (40) can be inserted into the voltage source compartment (14) and can be pulled out of this; e. wherein the voltage source (40) in the voltage source compartment (14) is releasably held in the inserted position by means of at least one magnet (70, 72). Wheelchair lighting control unit according to Claim 1 wherein the at least one magnet (70, 72) is combined with the electrical connection (27, 53) of the voltage source (40) to the control electronics (28). Wheelchair lighting control unit according to one of Claims 1 or 2 wherein the at least one magnet (70, 72) is arranged on an end wall of the voltage source (40) or on the closed end of the voltage source compartment (14). Wheelchair lighting control unit according to one of Claims 1 to 3 in which at least two counter-pole magnets (70, 72) are provided, wherein a magnet (70) is arranged on the voltage source (40) and a magnet (72) is arranged on the voltage source compartment (14) such that the two magnets (70, 72) tighten when the voltage source (40) is in the inserted position. Wheelchair lighting control unit according to one of Claims 1 to 4 wherein the voltage source compartment (14) comprises at least one spring element (16, 18, 76) biased from outside against a side surface of the voltage source (40). Wheelchair lighting control unit according to Claim 5 , wherein the at least one spring (16, 18) is designed as a band spring, which has a wave-shaped cross section. Wheelchair lighting control unit according to one of Claims 5 or 6 wherein the at least one spring (16, 18) is integrally formed with the power source compartment (14) and replaces a portion of a wall of the power source compartment (14). Wheelchair lighting control unit according to one of Claims 5 to 7 wherein the voltage source compartment (14) comprises two spring elements (16,18) which are arranged at an angle to each other and are biased from the outside against two different side surfaces of the voltage source (40). Wheelchair lighting control unit according to one of Claims 5 to 8th wherein the at least one spring (16, 18) is made in one piece with the voltage source compartment (14), in particular injection molded from a plastic material. Wheelchair lighting control unit according to one of Claims 5 to 9 , wherein the at least one spring (16, 18) forms an externally visible part of an outer wall of the housing (10). Wheelchair lighting control unit according to one of Claims 5 to 10 wherein the at least one spring (16,18) in cross-section has at least three circular arc sections which are arranged alternately convex and concave, wherein the central circular arc section is concave from the outside and is aligned against the side surface of the voltage source (40). Wheelchair lighting control unit according to one of Claims 5 to 11 , wherein on one of the voltage source (40) facing surface of the at least one spring (16, 18), a film (20) is arranged with berrei berreich surface. Wheelchair lighting control unit according to Claim 5 wherein the spring element (76) is designed as a wire bow and is simultaneously biased on opposite side surfaces of the voltage source (40). Wheelchair lighting control unit according to one of Claims 1 to 13 , wherein the control electronics (28) comprises a board (30) are arranged on the cable clamps (32) or connectors (34) for tool-free contacting of electrical lines to the at least one LED light. Wheelchair lighting control unit according to one of Claims 1 to 14 , wherein films (22) with a low-friction surface are arranged on the inside of the voltage source compartment (14). Wheelchair lighting control unit according to one of Claims 1 to 15 wherein the housing (10) has an insertion bevel (24) adjacent to the opening of the voltage source compartment (14). Wheelchair lighting control unit according to one of Claims 1 to 16 , wherein at the closed end of the voltage source compartment (14) electrical contacts, in particular plug contacts (26) or magnetic contacts (53), for the electrical connection of the voltage source (40) to the control electronics (28) are arranged. Wheelchair lighting control unit according to one of Claims 1 to 17 wherein the voltage source (40) comprises a cuboid power source housing (44, 46) having rounded edges. Wheelchair lighting control unit according to one of Claims 1 to 18 wherein the voltage source (40) has an LED charge status indicator (62), a magnetically connectable charging port (56) and a socket (52) for the electrical connection of the voltage source (40) to the control electronics (28). Wheelchair lighting control unit according to one of Claims 1 to 19 in that the voltage source (40) has a loop (64), in particular a belt loop, for pulling out the voltage source (40) from the voltage source compartment (14). Wheelchair lighting control unit according to one of Claims 18 or 20 wherein the loop (64) or the voltage source housing (44, 46) on the outside has an optical marking which optically identifies the upper side of the voltage source (40). Wheelchair lighting control unit according to one of Claims 1 to 21 wherein the voltage source (40) comprises a handle (80) for withdrawing the voltage source (40) from the voltage source compartment (14), the handle (80) preferably having an opening (82) extending substantially vertically through the handle (80). 80). Wheelchair lighting control unit according to Claim 19 wherein the voltage source (40) comprises a USB power bank (42) integrated into the voltage source housing (44, 46), wherein the terminals of the USB power bank (42) with the magnetically connectable charging port (56) and the socket ( 52) are electrically connected, in particular electrically connected via electrical connectors. Wheelchair lighting control unit according to Claim 23 , wherein the voltage source (40) has a mechanical button (50) which can actuate a charge status button (48) of the USB power bank (42) and the upon insertion and withdrawal of the voltage source (40) in and out of the voltage source compartment (14) the power source compartment (14) is actuated. Wheelchair lighting control unit according to one of Claims 23 and 24 wherein the power source housing (44, 46) has at least one window (60) through which the LED charge status indicator (62) of the USB power bank (42) is visible. Wheelchair lighting control unit according to one of Claims 1 to 25 , wherein the housing (10) has an openable cover (12) and below the lid (12) has a non-conductive cover, which covers the control electronics (28) except for the region of the connecting terminals (32) from above. Wheelchair lighting control unit according to one of Claims 1 to 26 wherein the housing (10) further comprises eyelets (19) for attaching the wheelchair lighting control unit (1) to a wheelchair. Wheelchair lighting control unit according to Claim 27 wherein the eyelets (19) are integrally formed with a part of the housing made of a plastic material. Wheelchair lighting control unit according to one of Claims 1 to 26 wherein the housing (10) further comprises at its edge a plurality of indentations (74) for attaching the wheelchair lighting control unit (1) to a wheelchair. Wheelchair lighting control unit according to one of Claims 1 to 29 wherein the voltage source compartment (14) has at least one rib (86) extending in the direction of insertion, which corresponds to at least one groove (48) on the upper side of the voltage source (40) in order to unambiguously orient the voltage source (40) in the voltage source compartment (14) guarantee.

Images