Contact element, current collector, contact station, contact charging system and plant

Abstract

The invention relates to a contact element (30a-c; 130) for contacting a sliding contact (16a-c), comprising a mounting section (31a-c) and a contact section (36a-c) connected thereto and extending in a longitudinal direction (L), wherein the sliding contact (16a-c) and the contact element (30a-c; 130) are movable relative to each other. The invention solves the problem of enabling improved, safe, reliable, and yet low-wear conductive transmission of electrical energy and / or data to and / or from a movable electrical load by providing the contact section (36a-c) with at least one electrically conductive contact (39a-e; 139a-e) with a contact surface (42a-e; 142a-e) for electrically conductive contacting the sliding contact (16a-c).The invention further relates to a current collector (20) for the conductive transmission of electrical energy and / or data to or from a contact station (10) with at least one such contact element (30a-c; 130), such a contact station (10) with one or more sliding contacts (16a-c) for contacting one or more contact elements (30a-c; 130) of the current collector (20), a contact charging system (1) between at least one contact station (10) and at least one current collector (20), and a system with at least one electrical consumer movable relative to a frame part of the system with at least one such contact charging system (1).

Description

[0001] The invention relates to a contact element according to the preamble of claim 1, a current collector according to the preamble of claim 28, a contact station according to the preamble of claim 33, a contact charging system according to the preamble of claim 38 and a system according to the preamble of claim 39.

[0002] DE 10 2019 131 365 A1 relates to a warehouse with at least one racking system into which loads can be stored and retrieved using a forklift truck, and with an aisle running along the racking system, wherein an inductive charging device is provided for the forklift truck located in the aisle, wherein the inductive charging device has a first distance to the racking system on its side facing the racking system and a second distance to the racking system on its side facing away from the racking system, wherein the first distance is dimensioned so that the forklift truck can be inductively charged during a storage and retrieval operation and the second distance is dimensioned so that the forklift truck can also be inductively charged during a lifting and lowering operation.Inductive charging is quite complex, requiring either minimal spacing between the transmission coils or increased transmission power to ensure fast and reliable charging. Furthermore, the relatively high magnetic fields can cause health problems for operators, and electronic devices such as mobile phones or wirelessly connected control units can be adversely affected.

[0003] The invention is therefore based on the objective of enabling an improved, safe, reliable and yet low-wear conductive transmission of electrical energy and / or data to and / or from a mobile electrical consumer.

[0004] The invention solves this problem with a contact element having the features of claim 1, a current collector having the features of claim 28, a contact station having the features of claim 33, a contact charging system having the features of claim 38 and a system, in particular a high-bay warehouse having the features of claim 39.

[0005] A contact element mentioned above is characterized according to the invention in that the contact section has at least one electrically conductive contact with a contact surface for electrically conductive contacting of the sliding contact.

[0006] Preferably, the contact section can be electrically conductive. Furthermore, the contact section can advantageously be convexly curved. This ensures that at least one of the contacts can establish a good electrical connection to the sliding contact.

[0007] Furthermore, the contact section can advantageously have trough-shaped side walls that extend at least partially away from the contact surface. This trough-shaped design improves the stability of the contact section, which is particularly helpful with regard to the desired large number of contact cycles. Preferably, the trough-shaped side walls can extend substantially in the longitudinal direction.

[0008] Preferably, the contact section can have a free end. This improves the mobility of the contact section, especially in the vertical direction. Furthermore, the contact section can preferably taper towards the free end.

[0009] Preferably, the fastening section can also extend longitudinally. Furthermore, the fastening section can advantageously have positioning recesses and / or positioning projections extending transversely to the longitudinal direction. This facilitates the positioning and fixing of the contact element in the current collector, particularly in the longitudinal direction and in a transverse direction perpendicular to it, which preferably also extends perpendicular to the vertical direction, which in turn preferably extends perpendicular to the longitudinal direction.

[0010] Preferably, a strongly curved section, preferably by at least 150°, and particularly preferably by at least 170°, can adjoin the fastening section in the longitudinal direction. This curved section can preferably be U-shaped.

[0011] Furthermore, the contact section can advantageously be mounted in a rest position relative to the mounting section, and when the contact section is deflected from the rest position, a restoring element exerts a restoring force, in particular a spring-elastic force, on the contact section in the direction of the rest position.

[0012] In the configuration of the strongly curved section described above, particularly the U-shaped configuration, the mounting section and the contact section can advantageously be arranged one above the other. The strongly curved section then acts as a spring-like restoring element, which, in conjunction with the contact section and the mounting section, provides the restoring force for the contact section to its rest position relative to the mounting section. Alternatively, a spring element can be provided directly between the mounting section and the contact section as the restoring element, e.g., one or more coil springs or a leaf spring, etc.

[0013] Preferably, a first curved section can adjoin the contact section in the longitudinal direction. Advantageously, the first curved section can be curved in the opposite direction to the contact section in the vertical direction, so that the first curved section and the contact section form an approximately S-shaped bend. Furthermore, the first curved section can preferably taper towards the contact section. Preferably, the first curved section can adjoin the strongly curved section in the longitudinal direction.

[0014] Preferably, the contact surface of the contact can be dome-shaped, particularly in the form of a spherical dome. This allows for particularly good electrical contact with a clearly defined contact point. This is also the case if the contact section, viewed longitudinally, is inclined or tilted relative to the sliding contact, since a clearly defined contact point of the contact surface is still present on the sliding contact.

[0015] The contact can preferably have a contact element, particularly a mushroom-shaped one, with a contact surface. Furthermore, the contact can advantageously have a fastening element for attachment in a correspondingly shaped contact receptacle of the contact section. Several contacts, preferably identical in design, can also be attached to the contact section, offset from one another longitudinally. This ensures electrical contact as soon as the contact element moves into and / or out of contact with the sliding contact, and also compensates for any tilting of the contact element in the longitudinal direction.

[0016] Preferably, the contacts can follow the longitudinal direction of the contact section, in particular its curvature or bending, and / or be arranged at an angle to each other in the vertical direction.

[0017] In an advantageous embodiment, the apexes of the contact surfaces follow the curvature of the contact section and / or lie on a circular arc. This allows for good and precise transmission between the contact surfaces and the sliding contact, and in particular improves the contact contact of the surfaces against the sliding contact, regardless of the position of the contact section relative to the sliding contact during operation. Advantageously, the contacts can be designed as contact pins.

[0018] Preferably, several or all of the offset contacts can be electrically and / or mechanically connected to each other to form a contact pin element. This simplifies the manufacturing of the contact element, as the contacts no longer need to be individually inserted and secured in the contact section, but rather the contact pin element can be installed all at once.

[0019] Advantageously, the contact pin element can be adapted to the curvature of the contact section, so that good electrical contact with the contact section can be achieved.

[0020] Preferably, the contacts can be connected to each other via connecting bridges.

[0021] Furthermore, the connecting webs can advantageously have current transfer surfaces pointing towards the contact section, preferably forming a flat area against the contact section. This allows for high current transfer between the contacts and the contact section while maintaining a compact design.

[0022] A design that is advantageous from a manufacturing perspective can provide for the contact pin element and the contacts to be formed as a single piece of material.

[0023] A current collector mentioned above for the conductive transmission of electrical energy and / or data to or from a contact station is characterized according to the invention in that it has at least one contact element as described in the claims and above and below.

[0024] Preferably, the contact elements can be arranged side by side transversely to the longitudinal direction, in particular parallel to one another. Furthermore, the contact elements can preferably be floatingly mounted on the current collector, in particular floating in the longitudinal direction and / or the vertical direction and / or in a transverse direction extending transversely to the longitudinal direction and / or transversely to the vertical direction.

[0025] Preferably, the contact elements can be arranged on a support plate of the current collector, with separating webs, in particular electrically insulating separating webs, being provided between the contact elements. Advantageously, the support plate can be composed of longitudinally extending individual parts, in particular sections, that can be connected to each other transversely. This facilitates the assembly of the current collector.

[0026] A contact station mentioned above for the conductive transmission of electrical energy and / or data to or from a current collector is characterized according to the invention in that the contact station has one or more sliding contacts for contacting one or more contact elements of the current collector as described in the claims and above and below.

[0027] Preferably, the contact station can have one or more sliding contacts for contacting one or more contact elements of the current collector. Furthermore, the sliding contact(s) can preferably have longitudinally opposing ends that slope upwards in a ramped manner. These facilitate the extension and retraction of the contact elements, which are first slowly deflected from their rest position until they reach the tensioned contact position.

[0028] Preferably, the sliding contacts can be arranged side by side transversely to the longitudinal direction, particularly parallel to each other. At least two, preferably at least three, of the adjacent sliding contacts can advantageously have different lengths in the longitudinal direction. The ends of a longer sliding contact can advantageously extend beyond the ends of a shorter sliding contact on both sides in the longitudinal direction. This ensures that a specific sliding contact is contacted first when the contact is inserted and is the last to release contact when it is extended, thus achieving, for example, a reliable and long-lasting electrical contact with the corresponding contact element. Optionally, the first contact with the longest sliding contact can also be used as an activation signal to initiate the subsequent transmission as quickly as possible. Optionally, the shortest sliding contact can also be used as a signal contact, e.g.,To initiate the transmission, the sliding contact element engages the other sliding contacts, which are already connected to their respective contact elements, thus establishing an electrical connection. Accordingly, it can also signal when the contact is released, allowing the electrical transmission via the other sliding contacts to be terminated immediately. This also effectively prevents sparking between the sliding contacts and the corresponding contact elements.

[0029] A contact charging system for the transmission of electrical energy and / or data, as described above, is characterized according to the invention in that the current collector(s) are designed as described in the claims and above and below, and the contact station or contact stations are designed as described in the claims and above and below.

[0030] The aforementioned system is characterized according to the invention in that it comprises a contact charging system as described in the claims and above and below. In particular, such a contact charging system can be used in the system. Preferably, the system is a high-bay warehouse.

[0031] Preferably, at least one current collector as described in the claims and above and below can be arranged on each of the one, more, or all electrical consumers. Preferably, one or more contact stations as described in the claims and above and below can also be arranged on the frame part.

[0032] In a further embodiment of the system, one or more current collectors as described in the claims and above and below can preferably be arranged on the frame part. Preferably, at least one contact station as described in the claims and above and below can be arranged on each of the one, more, or all electrical consumers.

[0033] Further features and advantages of the invention will become apparent from the following description of a preferred embodiment with reference to the drawings. These show: Fig. 1 a three-dimensional oblique view of a contact charging system with a contact station and a current collector with contact elements; Fig. 2 a side view of the contact charging system Fig. 1 of in Fig. 1 right; Fig. 3 a top view of the contact station Fig. 2; Fig. 4 a three-dimensional oblique view of the pantograph Fig. 1; Fig. 5 a three-dimensional oblique view of the pantograph Fig. 4 from a different perspective; Fig. 6 a top view of the pantograph from Fig. 1 in the position of Fig. 4; Fig. 7 a front view of the pantograph Fig. 6; Fig. 8 a sectional view through the pantograph Fig. 6 along the intersection line AA; Fig. 9 a three-dimensional oblique view of one of the contact elements made of Fig. 4; Fig. 10 a top view of the contact element made of Fig. 9; Fig. 11 a front view of the contact element made of Fig. 9; Fig. 12 a sectional view through the contact element made of Fig. 10 along line BB; Fig. 13 a side view of the contact element Fig. 11 of in Fig. 11 left; Fig. 14 a sectional view through the contact element made of Fig. 11 along line CC at eight times magnification; Fig. 15 an exploded view of the pantograph made of Fig. 4; Fig. 16 a front view of an alternative contact element accordingly Fig. 9; Fig. 17 a schematic three-dimensional underside view of the contact element made of Fig. 16; Fig. 18 a sectional view through part of the contact element made of Fig. 16 accordingly Fig. 12; Fig. 19 a schematic three-dimensional oblique view of a contact pin element of the contact element made of Fig. 17.

[0034] Fig. Figure 1 shows a three-dimensional oblique view of a contact charging system 1 according to the invention with a contact station 10 and a current collector 20 for contacting the contact station 10.

[0035] The contact charging system 1 can be used in a wide variety of technical fields, with a preferred application being in automated high-bay warehouses. There, for example, individual or all storage compartments of a high-bay warehouse can each be equipped with one or, if necessary, several contact stations 10. One or, if necessary, several current collectors 20 can then be provided for storage containers that can be moved into and out of the storage compartments in an entry or longitudinal direction L, acting as electrical consumers. The contact station 10 and the current collector 20 must be aligned with each other so that they make electrical contact when the storage container is moved into the storage compartment, in order to then transfer electrical energy from the contact station 10 via the current collector 20 to the electrical consumer on the storage container.

[0036] Contact station 10, which is located in Fig. 2 in side view, i.e. from in Fig. 1 right and in Fig. Figure 3, shown in top view, has a mounting plate 11, which is preferably made of a non-electrically conductive material such as plastic, etc. The mounting plate 11 can be designed in one or more parts and consist of individual, connectable parts. In the present embodiment, the mounting plate 11 consists of longitudinally extending parts, with the dividing lines between the parts in Fig. 2 and Fig. 3 are clearly recognizable. This serves to simplify manufacturing and improve variability; however, the mounting plate 11 can also be made from fewer or more parts or even as a single piece.

[0037] To enable the contact station 10 to be attached to a designated support (not shown), for example, to the floor of a shelf compartment in a high-bay warehouse, the mounting plate 11 has four recesses 12a-d on its sides. The mounting plate 11 can be screwed to the support through these recesses using four fastening screws 12a to 12d. Preferably, as in the present embodiment, the recesses 12a-d are open laterally so that the fastening screws 13a and 13b can be pre-installed in the support. The mounting plate 11 can then be slid laterally into the fastening screws 13a and 13b using the recesses 12a and 12b. Finally, only one of the fastening screws 13c or 13d needs to be screwed through the recess 12c or 12d into the support to pre-fix the mounting plate 11 for final assembly.Then, without the risk of shifting the mounting plate 11 on the carrier, the last mounting screw 13d can be screwed into the carrier and the remaining mounting screws 12a to 12c can then be tightened.

[0038] On the two outer sides of the pantograph 20, which are located in a transverse direction Q perpendicular to the longitudinal direction L, side cheeks 14a, 14b and central separating webs 15a, 15b located between them are arranged, which extend upwards from the mounting plate 11 in the longitudinal direction L and in a vertical direction H perpendicular to the transverse direction Q and perpendicular to the longitudinal direction L.

[0039] Between the side walls 14a, 14b and the central separating webs 15a, 15b, sliding contacts 16a-c made of an electrically conductive material are provided, which have ramps 17a-c, 17a'-c' extending upwards in the vertical direction H from the mounting plate 11 in the longitudinal direction L. The side walls 14a, 14b and separating webs 15a, 15b are preferably made of a non-electrically conductive material, for example plastic or similar, in order to reliably electrically insulate the electrically conductive sliding contacts 16a-c from each other.

[0040] The sliding contacts 16a-c are each electrically connected to contact lines 18a-18c, which can be connected to or are connected to a power supply of the contact charging system 1, in particular by welding or soldering.

[0041] Furthermore, sensor lines 19a and 19b are provided, which are connected, for example, to temperature sensors that detect the temperature of contact 16a (designed as the negative terminal) and contact 16c (designed as the positive terminal). The sliding contact 16b, on the other hand, serves as a switching contact to initiate charging.

[0042] As from Fig. As can be seen in Figure 3, the three sliding contacts 16a-c are of different lengths and protrude to different degrees in the longitudinal direction L. The first sliding contact 16a is the longest and protrudes longitudinally L compared to the other two sliding contacts 16b and 16c, so that a contact element 30a of the current collector 20 first contacts the sliding contact 16a before further contact elements 30b, 30c contact the sliding contact 16b or 16c respectively.

[0043] Preferably, the middle sliding contact 16b, being the shortest sliding contact, serves as the enable or trigger pole. This ensures that the negative pole 16a and then the positive pole 16c make reliable electrical contact with the corresponding contact element 30a or 30c before the charging process begins. This prevents sparking caused by contact elements 30a and 30c not yet making proper contact with the sliding contacts 16a and 16c, which would significantly reduce the service life of the electrical energy-transmitting contact elements 30a and 30c and the corresponding sliding contacts 16a and 16c.

[0044] The pantograph 20 is shown next to the representations of the compact charging system 1 in Fig. 1 and Fig. 2 particularly easy to recognize in Fig. Figures 4-8 and 15 are shown. The pantograph is 20 in this figure. Fig. 1 and Fig. 2 is shown in a position opposite contact station 10, while in Fig. 4 and the further derived therefrom Fig. Figures 5 to 8 of the pantograph 20 are shown upside down to make the invention easier to explain.

[0045] The pantograph 20 has a support plate 21, which, as in Fig. 1 and Fig. 15 clearly consists of several components running lengthwise L and arranged side by side, for example the one in Fig. The 15 exemplary sections 20a-d are shown. The support plate 21 has recesses 22a-d on each side for fastening screws 23a-d, by means of which the current collector 20 can be attached to the electrical load to be supplied. This is done in the same way as with the contact station 10, using fastening screws 23a-d, so reference is made to the above explanations regarding the fastening of the mounting plate 11.

[0046] The pantograph 20 also has longitudinal side walls 24a, 24b extending in the longitudinal direction L and the vertical direction H, as well as central separating webs 25a, 25b located between them, between which mounting ramps 26a-c are located. The individual longitudinally extending and adjacently arranged sections 20a-d of the support plate 21 are in Fig. 15 clearly visible, wherein the inner sides of the side walls 24a, b and the central dividing webs 25a, b each have mounting ramps 26a-c divided equally. Side walls 27a, 27b are provided on the outer sides of the side walls 24a, 24b, with openings for contact lines 29a-c provided in side wall 27a. To connect the individual sections 20a-d of the support plate 21 of the pantograph 20 to each other, the sections 20a-d can be fastened to the support plate 21 by means of a connecting screw 28 inserted through aligned through-openings 28d-b in the sections 20d-b. Fig. The right-hand section 20a of the mounting ramp 26a are screwed together, the latter preferably having an internal thread 28a for this purpose. The internal thread 28a can be introduced, inserted, or cast into the material of the section 20a, particularly if the section 20a is made of plastic. If at least the section 20a is made of plastic, instead of the internal thread 28a, a through-hole adapted to the diameter of the connecting screw 28 can be provided such that the connecting screw 28 can dig into the material of the section 20a, which simplifies manufacturing and assembly. Preferably, the through-holes 28b-d can have a larger inner diameter than the connecting screw 28 to allow it to be easily inserted and thus simplify the mounting of the current collector 20. If necessary,The through-holes 28b-d can also have a slightly smaller diameter than the connecting screw 28, so that the connecting screw 28 digs into the through-holes 28d-b and thereby firmly fixes each section 20b-d. Other connection methods are also conceivable, for example, snap-fit ​​connections between the individual sections. Likewise, the sections 20a-d can also have positioning aids and, in addition to the connecting screw 28, further connecting elements such as snap or locking connections.

[0047] The current collector 20 is preferably from the in Fig. The components are assembled into 15 clearly identifiable sections 20a-20d to facilitate the assembly and fastening of electrically conductive contact elements 30a-c, which are each electrically connected to the contact leads 29a-c. The contact elements 30a-c are identical in design, so the invention will be explained below primarily with reference to contact element 30a. Corresponding embodiments apply analogously to contact elements 30b and 30c.

[0048] The contact station 10 can also be constructed in principle like the pantograph 20, in particular as in Fig. 15 shown as consisting of several sections running in the longitudinal direction L and arranged next to each other.

[0049] As especially from Fig. 9 to 14 for the contact element 30a and the exploded view of the current collector 20 in Fig. As shown in Figure 15, the contact element 30a is arranged between the two sections 20a, 20d of the support plate 21 and encompasses the mounting ramp 26a. Positioning recesses 32a, 32b, opposite each other in the transverse direction Q, are provided on a mounting section 31a of the contact element 30a. These recesses engage with corresponding positioning pins or projections (not visible) on the sections 20a, 20b. When the support plate 21 is mounted, these positioning pins or projections thus fix the contact element 30a in the longitudinal direction L and to the current collector 20. Preferably, the contact element 30a is attached to the support plate 21 such that it is floating at least in the vertical direction H, and preferably also to a certain extent in the transverse direction Q and / or longitudinal direction L.For this purpose, the positioning recesses 32a, b in the longitudinal direction L are designed to be slightly larger than the fixing projections of the sections 20a, 20b, in order to allow for play in the longitudinal direction L. Accordingly, the fixing projections in the transverse direction Q do not extend to the base of the positioning recesses 32a, b, in order to also allow movement in the transverse direction Q. The contact elements 30b and 30c are arranged accordingly between the sections 20b and 20c and sections 20c and 20d, respectively.

[0050] The contact element 30a exhibits the particularly in Fig. 9, Fig. 10 and Fig. 13. A recognizable fishhook-like shape is formed, wherein a strongly curved section 33 adjoins the mounting section 31a provided for mounting on the support plate 21, in which the contact element 30a is curved backwards by 180°. An S-shaped section 34 then adjoins this strongly curved section 33, which first curves upwards in the vertical direction H away from the mounting part 40a, in particular concavely, in a first curvature section 35, and then subsequently curves again in the vertical direction H towards the mounting section 31, in particular convexly, in a contact section 36a designed as a second curvature section.

[0051] The contact element 30a in the fastening section 31a, as well as in the strongly curved section 33 and in the first curvature section 35, is flat or band-shaped, while the contact section 36a, which forms the second curvature section, is trough-shaped, as for example in Fig. 14 clearly visible.

[0052] The trough-shaped design of the contact section 36a, with side walls 37a, 37b bent downwards towards the mounting section 31a, serves to stabilize the contact section 36a. This is because the contact element 30a is designed for a very large number of contacts, preferably at least 1 million contact cycles, and more preferably at least 2 million contact cycles. A contact cycle is defined as a single insertion of the contact element 30a into the sliding contact 16a and its complete retraction from the sliding contact 16a.

[0053] The contact element 30a preferably consists of an electrically conductive material, which preferably exhibits good spring-like elastic properties, so that, when inserted and made contact via the ramps 17a or 17a' of the sliding contact 16a, it can yield and, at the same time, be permanently pressed against the sliding contact 16a in the vertical direction H, thus ensuring reliable electrical contact. Advantageously, the contact element can be made of spring steel, but other suitable materials such as tin bronze can also be used.

[0054] On the trough-shaped contact section 36a, a plurality of pin receptacles 38a-e are provided in the vertical direction H on the side facing away from the fastening section 31a, as in particular Fig. 12 and Fig. Figure 14 shows that the pin receptacles 38a-e are designed as bores in this case, but can also have other shapes and designs, for example being square, hexagonal or polygonal.

[0055] Each of the pin receptacles 38a-e contains an electrically conductive contact, designed as a contact pin 39a-e, with its mounting part 40a-e inserted. A mushroom-shaped contact part 41a-e, which is wider than the mounting part 40a-e, adjoins the mounting part 40a-e. The contact part 41a-e has a dome-shaped contact surface on the side facing away from the mounting section 31a in the vertical direction H, which is here designed as a contact dome 42a-d. However, other contact surface configurations are also possible, with the dome-shaped configuration, i.e., as a circular spherical segment, enabling good contact with the sliding contact 16a, in particular a largely point-like contact. This results in the contact element 30a pressing only a small portion of the contact pin 39c against the sliding contact 16a in a highly concentrated manner, thus ensuring good current transmission.

[0056] Preferably, during charging, the contact surface 42c of the central contact pin 39c rests against the sliding contact 16a, particularly with the apex of the contact surface 42a. Furthermore, in the case of a spherical contact surface 42c, the imaginary connecting line between the apex and the center of the sphere defining the spherical contact surface is perpendicular to the sliding contact 16a or its contact surface.

[0057] The dome-shaped design of the contact surfaces 42a-e of the contact parts 41a-e also allows for the compensation of any tilting or misalignment of the current collector 20, particularly in the vertical direction H, relative to the contact station 10, while still ensuring point contact of the sliding contacts 16a-c.

[0058] In the present embodiment, unspecified vertices of the contact surfaces 42a-e follow the curvature of the contact section 36a, which is preferably designed as a circular arc, so that the vertices of the contact surfaces 42a-e also lie on a circular arc. However, the curvature of the contact section 36a may also have a different shape, e.g., an elliptical, parabolic, hyperbolic, or other curved shape.

[0059] To ensure the continued safe insertion of the contact elements 30a-c into the contact station 10 onto the sliding contacts 16a-c, even if the movable electrical load with the current collector 20 is positioned inaccurately relative to the carrier and the contact station 10, the contact elements 30a-c taper from the strongly curved section 33 via the first curved section 35 to the contact section 36a, as shown in particular in Fig. 6, Fig. 10 and Fig. 13 clearly visible.

[0060] In the present embodiment, the fastening part 40a of the contact pin, as for example in Fig. 14, recognizable as a rivet, which is fastened in the pin receptacle 38a in a known manner by a riveting process in which the fastening part 40a expands in a known manner under external force and thus becomes wider than the pin receptacle 38a, thereby fixing the contact pin 39a firmly and electrically conductively to the contact section 36a. Instead of fastening by rivets, other fastening methods can also be used; for example, the fastening part 40a can have an external thread and the pin receptacle 38a an internal thread, so that the contact pin 39a can be screwed in and, if necessary, also unscrewed. Likewise, the contact pins 39a-e could also be electrically bonded, welded, or soldered to the contact element 30a.

[0061] The other fastening pins 39b-e are accordingly inserted into the second curved section 36a and fastened there. The same applies to the contact elements 30b, c, which are designed accordingly.

[0062] When the pantograph 20 enters contact station 10, as is the case, for example, in Fig. As indicated in Figure 1, the contact elements 30a-c contact the sliding contacts 16a-c in the area of ​​their approach ramps 17a-c and 17a'-c', respectively. As the pantograph 20 moves longitudinally L towards the contact station 10, the S-shaped curved sections 34 of the contact element 30a are pressed vertically towards the pantograph 20 and its support plate 21. During retraction, the contact section 36a is thus moved from its relaxed rest position, as shown in the drawings, into a tensioned contact position vertically H towards the mounting section 31a. In this contact position, the contact section 36a is pressed continuously against the sliding contact 16a by the spring-elastic properties of the contact element 30a to ensure electrical contact. Fig. 2 For the sake of clarity, the pantograph 20 is shown at a significantly greater distance from the contact station 10 in the vertical direction H, whereas in reality the pantograph 20 is positioned much closer to the contact station 10 in the vertical direction H to ensure reliable contact.

[0063] Since the identically shaped contact pins 39a-d in the trough-shaped contact section 36a follow the curve of the contact section 36a, when the contact element 30a moves into contact with the sliding contact 16a, contact pin 39a first makes contact with the sliding contact 16a, followed by contact pin 39b and then 39c. Depending on the distance between the current collector 20 and the contact station 10 in the vertical direction H, another of the contact pins 39a-e with its contact cap 42a-e can also make contact with the sliding contact 16a.

[0064] When the pantograph 20 extends from the contact station 10 in the longitudinal direction L, the contact pins 39a, b contact the sliding contact 16a in the area of ​​the approach ramps in the reverse order of the retraction sequence. This ensures contact until the pantograph 20 is completely removed from the contact station 10 and prevents any potential sparking. The extension can also occur in the opposite direction; the pantograph 10 essentially "passes" through the contact station 10 in the longitudinal direction L. In this case, the contact pins 39d, e reliably contact the sliding contact 16a in the area of ​​the opposite approach ramp 17a' until the pantograph is fully extended. This is possible, for example, in a high-bay warehouse where the shelf compartment in which the contact station 10 is mounted can be filled from both sides of the rack in the longitudinal direction L, meaning the movable shelf container can extend in either direction.

[0065] Alternatively, in a possible embodiment, the contact elements 30a can also be arranged at the contact station 10, and the sliding contacts 16a-c at the current collector 20. Particularly in the embodiment shown here, the individual parts forming the mounting plate 11 and the support plate 21 can be advantageously arranged from a manufacturing and assembly perspective, as is especially evident in Fig. 15 recognizable, identically designed, so that the sliding contacts 16a-c can be easily arranged on the mounting ramps 26a-c, while the contact elements 30a-c can be just as easily arranged on the parts of the mounting plate 11 having the approach ramps 17a-c, 17a'-c'.

[0066] In Fig. Figures 16 to 19 show an alternative embodiment of a contact element 130, which differs essentially from the embodiment of contact pins 139a-139e in the design of the contact pins 139a-139e. Fig. The design of the contact pins 39a-e of the contact element 30 shown in Figures 1 to 15 differs. Therefore, the following discussion focuses primarily on the differences, while identical components retain the same designations and reference numerals.

[0067] The alternative contact element 130 again has contact pins 139a-e, which, however, are not individually inserted into the contact receptacles 38a-e, but are advantageously connected to form a contact pin element 139 by connecting webs 140a-d located between adjacent contact pins 139a-e. The connecting webs 140a-d have current transfer surfaces 141a-d facing the contact section 36a, which are positioned against the bottom of the trough-shaped contact section 36a and are preferably glued, soldered, welded, or otherwise electrically connected there over a surface area, as shown in Fig. 18 clearly visible. This ensures good and even current transfer from the contact pin element 139 to the contact section 36a.

[0068] Unlike in Fig. 12 and Fig. As can be seen, the contact surfaces 142a, b, d, e of the contact pins 139a, b, d, e are not formed centrally to the central axis of the respective contact cap, but rather off-center. The contact surfaces 142a, b, d, e approximately follow the concave curvature of the second curvature section 36a. Therefore, the edges of the contact surfaces 142a, b, d, e facing away from the central contact pin 139c are, viewed in the vertical direction H, closer to the fastening section 31a than the edges of the contact surfaces 142a, b, d, e facing the contact pin 139c.

[0069] This serves, among other things, to allow the contact pins 139a, b, d, e to approach the sliding contact 16a more gently, since the contact surfaces 142a, b, d, e already contact the sliding contact 16a in the area of ​​their rounded surface, and not with the edge at the transition to the cylindrical part of the contact parts 141a, b, d, e. This design can also be provided for the contact surfaces 42a-e of the contact element 30 described above.

[0070] In addition, this also simplifies the manufacturing of the contact element 130, since the contact receptacles 138a-e, through which the contact pins 139a-e are inserted, can all run in the same insertion direction for the contact element 130, especially if they are designed as bores. Preferably, the insertion direction runs parallel to the vertical direction H. The vertices of the preferably spherical contact surfaces 142a-e then follow the curvature of the contact section 36a, as in the first embodiment of the contact element 30 described above, and lie in particular on a circular arc.

[0071] The alternative contact element 130 can therefore be manufactured easily and quickly and exhibits good and large-area current transmission. Reference sign 1 Contact charging system 10 Contact station, charging station 11 Mounting plate 12a-d Recesses for fastening screws 13a-d Fastening screws 14a, b side cheeks 15a, b middle dividing walls 16a-c sliding contacts (negative pole 16a, switching pole 16b, positive pole 16c) 17a-c, 17a'-c' Access ramps 18a-c contact lines 19a, b Sensor lines 20 current collectors 20a-d sections of the pantograph 21 Support plate 22a-d Recesses for fastening screws 23a-d Fastening screws 24a, b side cheeks 25a, b middle dividing walls 26a-c Mounting ramps 27a,b Side panels 28 Connecting screw 28a Internal thread in section 20a for connecting screw 28 28b-d Through openings through sections 20b-d 29a-c contact lines 30a-c contact elements 31a-c Mounting section 32a, b Positioning resets 33 strongly curved section, return element 34 S-shaped curved section 35 first curvature section 36a-c trough-shaped second curvature section, contact section 37a, b Side walls Contact section 38a-e Contact points, pin receptacles, bores 39a-e Contacts, contact pins 40a-e Fastening parts 41a-e Contact parts 42a-e Contact caps, cap-shaped contact surface 130 alternative contact elements 138a-e Contact points, pin receptacles, bores 139 Contact pin element 139a-e contacts, contact pins 140a-d connecting bridges 141a-d Power transmission surfaces Connecting walkways 142a-e Contact caps, cap-shaped contact surface L Entry direction, longitudinal direction of sliding contacts Q transverse direction H Altitude QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2019 131 365 A1

[0002]

Claims

[1] Contact element (30a-c; 130) for contacting a sliding contact (16a-c), comprising a fastening section (31a-c) and a contact section (36a-c) connected thereto and extending in a longitudinal direction (L), wherein the sliding contact (16a-c) and the contact element (30a-c; 130) are movable relative to each other, in particular in the longitudinal direction (L), characterized by , that the contact section (36a-c) has at least one electrically conductive contact (39a-e; 139a-e) with a contact surface (42a-e; 142a-e) for electrically conductive contacting of the sliding contact (16a-c). [2] Contact element (30a-c; 130) according to claim 1, characterized by , that the contact section (36a-c) is electrically conductive. [3] Contact element (30a-c; 130) according to claim 1 or 2, characterized by , that the contact section (36a-c) is convexly curved. [4] Contact element (30a-c; 130) according to one of the preceding claims, characterized by, that the contact section (36a-c) has at least partially trough-shaped side walls (37a, 37b) pointing away from the contact surface (42a-e). [5] Contact element (30a-c; 130) according to claim 4, characterized by , that the trough-shaped side walls (37a, 37b) run essentially in the longitudinal direction (L). [6] Contact element (30a-c; 130) according to one of the preceding claims, characterized by , that the contact section (36a-c) has a free end. [7] Contact element (30a-c; 130) according to claim 6, characterized by , that the contact section (36a-c) tapers towards the free end. [8] Contact element (30a-c; 130) according to one of the preceding claims, characterized by that the fastening section (31a-c) runs in the longitudinal direction (L). [9] Contact element (30a-c; 130) according to one of the preceding claims, characterized by, that the fastening section (31a-c) has positioning recesses (32a, 32b) and / or positioning projections extending in a transverse direction (Q) perpendicular to the longitudinal direction (L). [10] Contact element (30a-c; 130) according to one of the preceding claims, characterized by , that a strongly curved section (33), preferably by at least 150°, particularly preferably by at least 170°, adjoins the fastening section (31a-c) in the longitudinal direction. [11] Contact element (30a-c; 130) according to one of the preceding claims, characterized by , that the contact section (36a-c) is mounted in a rest position relative to the mounting section (31a-c) and, when the contact section (36a-c) is deflected from the rest position, a restoring element exerts a restoring force, in particular a spring-elastic force, on the contact section (36a-c) in the direction of the rest position. [12] Contact element (30a-c; 130) according to one of the preceding claims, characterized by, that in the longitudinal direction (L) a first curvature section (35) follows the contact section (36a-c). [13] Contact element (30a-c; 130) according to claim 12, characterized by , that the first curvature section (35) is curved in the opposite direction to the contact section (36a-c) in the vertical direction (H). [14] Contact element (30a-c; 130) according to claim 12 or 13, characterized by , that the first curvature section (35) tapers towards the contact section (36a-c). [15] Contact element (30a-c; 130) according to claim 11 and one of claims 12 to 14, characterized by , that the first curvature section (35) connects to the strongly curved section (33) in the longitudinal direction (L). [16] Contact element (30a-c; 130) according to one of the preceding claims, characterized by , that the contact surface (42a-e; 142a-e) of the contact (39a-e; 139a-e) is calotte-shaped, in particular in the form of a spherical calotte. [17] Contact element (30a-c) according to one of the preceding claims, characterized by , that the contact (39a-e) has a contact part (41a-e) having a contact surface (42a-e), in particular a mushroom-shaped contact part. [18] Contact element (30a-c) according to one of the preceding claims, characterized by , that the contact (39a-e) has a fastening part (40a-e) for fastening in a correspondingly shaped contact receptacle (38a-e) of the contact section (36a-c). [19] Contact element (30a-c; 130) according to one of the preceding claims, characterized by , that several contacts (39a-e; 139a-e) offset from each other in the longitudinal direction (L) are attached to the contact section (36a-c). [20] Contact element (30a-c; 130) according to claim 19, characterized by , that the contacts (39a-e; 139a-e) follow the course of the contact section (36a-c) and / or are arranged at an angle to each other in the vertical direction (H). [21] Contact element (30a-c; 130) according to claim 19 or 20, characterized by , that the vertices of the contact surfaces (42a-e; 142a-e) follow the curvature of the contact section (36a-c) and / or lie on a circular arc. [22] Contact element (30a-c; 130) according to one of claims 19 to 21, characterized by , that the contacts are designed as contact pins (39a-e; 139a-e). [23] Contact element (130) according to one of claims 19 to 22, characterized by that several or all of the offset contacts (139a-e) are electrically and / or mechanically connected to each other to form a contact pin element (139). [24] Contact element (130) according to claim 23, characterized by , that the contact pin element (139) is adapted to the curvature of the contact section (36a-c). [25] Contact element (130) according to claim 23 or 24, characterized by , that the contacts (139a-e) are connected to each other via connecting bridges (140a-d). [26] Contact element (130) according to claim 25, characterized by , that the connecting webs (140a-d) have current transfer surfaces (141a-d) pointing towards the contact section (36a-c) for, preferably planar, connection to the contact section (36a-c). [27] Contact element (130) according to one of claims 23 to 26, characterized by , that the contact pin element (139) with the contacts (139a-e) is formed in one piece with the material. [28] Current collector (20) for conductive transmission of electrical energy and / or data to or from a contact station (10), characterized by that it has at least one contact element (30a-c; 130) according to one of the preceding claims. [29] Current collector (20) according to claim 28, characterized by , that the contact elements (30a-c; 130) are arranged transversely to the longitudinal direction (L), in particular parallel, next to each other. [30] Current collector (20) according to claim 28 or 29, characterized by, that the contact elements (30a-c; 130) are floatingly mounted on the pantograph (20), in particular floating in the longitudinal direction (L) and / or the vertical direction (H) and / or a transverse direction (Q) running transversely to the longitudinal direction (L) and / or transversely to the vertical direction (H). [31] Current collector (20) according to one of claims 28 to 30, characterized by , that the contact elements (30a-c; 130) are arranged on a support plate (21) of the current collector (20), wherein separating webs (25a, 25b), in particular electrically insulating, are provided between the contact elements (30a-c; 130). [32] Current collector according to claim 31, characterized by , that the support plate (21) is composed of individual parts (20a-d) extending in the longitudinal direction (L) and connectable to each other in the transverse direction (Q). [33] Contact station (10) for conductive transmission of electrical energy and / or data to or from a current collector (20), in particular according to one of claims 28 to 32, characterized by , that the contact station (10) has one or more sliding contacts (16a-c) for contacting one or more contact elements (30a-c; 130) of the current collector (20). [34] Contact station (10) according to claim 33, characterized by , that the sliding contact(s) (16a-c) have ends (17a-c, 17a'-c') opposite each other in the longitudinal direction (L) and ramped in the vertical direction (H). [35] Contact station (10) according to claim 33 or 34, characterized by that the sliding contacts (16a-c) are arranged transversely to the longitudinal direction (L), in particular parallel, next to each other. [36] Contact station (10) according to claim 35, characterized by , that at least 2, preferably at least 3 of the sliding contacts arranged next to each other (16a-c) are of different lengths in the longitudinal direction (L). [37] Contact station (10) according to claim 36, characterized by, that the ends of a longer sliding contact (16a) extend beyond the ends of a shorter sliding contact (16b, 16c) on both sides in the longitudinal direction (L). [38] Contact charging system (1) for the transmission of electrical energy and / or data between at least one contact station (10) and at least one current collector (20), characterized by that the current collector(s) (20) are designed according to one of claims 28 to 32 and the contact station (10) or contact stations are designed according to one of claims 33 to 37. [39] Installation with at least one electrical consumer that can be moved relative to a frame part of the installation, characterized by , that the system comprises at least one contact charging system (1) according to claim 38. [40] Plant according to claim 39, characterized by, that at least one current collector (20) according to one of claims 28 to 32 is arranged on each of the one or more or all electrical consumers, and / or that one or more contact stations (10) according to one of claims 33 to 37 are arranged on the frame part. [41] Plant according to claim 39, characterized by , that one or more current collectors (20) according to one of claims 28 to 32 are arranged on the frame part, and / or that at least one contact station (10) according to one of claims 33 to 37 is arranged on each of the one or more or all electrical consumers.

Images