Connection device, cable system and personnel transportation device

Abstract

A wiring device is presented including a connector and at least three plugs. The connector includes at least three interfaces and a plurality of pins. The interfaces include a first interface, a second interface disposed opposite the first interface with an opening facing opposite an opening facing of the first interface, and a third interface disposed between the first interface and the second interface with an opening facing perpendicular to the openings facing of the first interface and the second interface. The plurality of pins are disposed within the connector, each pin extending at least to two of the first interface, the second interface, and the third interface. The three of the plugs are configured to be pluggably coupled to the first interface, the second interface, and the third interface, respectively, of the connector. A cable system and a personnel transportation device are also presented.

Description

Technical Field

[0001] This disclosure relates to a wiring device, and also to a cable system and personnel transport device including the wiring device. Background Technology

[0002] According to existing elevator shaft wiring solutions, for each elevator floor, it is necessary to set up elevator call serial communication and landing door safety contacts for that floor. Different elevator manufacturers have different wiring solutions, such as using plastic bags to crimp the terminals, adding extra boxes to wrap the floor nodes for additional protection, or pre-branching from cable suppliers, etc.

[0003] However, current technical solutions suffer from low device integration, complex wiring methods, and are time-consuming and labor-intensive in actual wiring. Furthermore, different cables may require different connection methods, making it impossible to guarantee connection quality. Additionally, junction boxes are typically required, which are difficult to maintain, bulky, and detrimental to cost reduction. Moreover, the reliability of all solutions is insufficient when facing harsher environments, such as higher humidity levels. Utility Model Content

[0004] Therefore, this disclosure aims to solve the aforementioned problems of existing wiring devices, and its purpose is to provide a wiring device that, compared with the prior art, has a higher degree of integration, is easier for front-line personnel to install and maintain, and has a smaller size and lower cost.

[0005] The objective is achieved by a wiring device according to an embodiment of the present disclosure, comprising a connector and at least three plugs. The connector includes at least three interfaces and multiple pins. Each interface includes: a first interface; a second interface disposed opposite to the first interface with its opening facing in the opposite direction to the opening of the first interface; and a third interface disposed between the first and second interfaces, its opening facing perpendicular to the openings of the first and second interfaces. Multiple pins are disposed inside the connector, each pin extending into at least two of the first, second, and third interfaces. Three of the plugs are configured to be pluggably connected to the first, second, and third interfaces of the connector, respectively.

[0006] The wiring device according to this disclosure may also have one or more of the following features, individually or in combination.

[0007] For example, according to one embodiment of the present disclosure, a receiving portion is provided in at least one of the interfaces and the corresponding plugs, wherein the receiving portion has a free space and the free space is accessible from the outside when the interfaces and the plugs are engaged, and a through groove communicating with the free space is provided on the side wall of the receiving portion.

[0008] For example, according to one embodiment of the present disclosure, at least one of the interfaces and the corresponding plug is provided with a resilient arm, wherein the resilient arm is at least partially received in the receiving portion when the interfaces and the plug are engaged, and the resilient arm is provided with a protrusion configured to be inserted into the through groove by deformation of the resilient arm.

[0009] For example, according to one embodiment of this disclosure, the plurality of pins includes at least one pair of first L-shaped pins and second L-shaped pins having an L shape, the two ends of the first L-shaped pins extending to a first interface and a third interface, respectively, and the two ends of the second L-shaped pins extending to a second interface and a third interface, respectively.

[0010] For example, according to one embodiment of this disclosure, the plurality of pins further includes at least one T-shaped pin having three branches extending into the first interface, the second interface, and the third interface, respectively.

[0011] For example, according to one embodiment of this disclosure, the plurality of pins further includes at least one I-shaped pin having an I-shape, the two ends of which extend to the first interface and the second interface, respectively.

[0012] For example, according to one embodiment of this disclosure, the plurality of pins are fixed relative to each other by being encased in an insulating mold.

[0013] For example, according to one embodiment of this disclosure, the wiring device further includes: a fourth interface disposed adjacent to the third interface and having the same opening orientation as the third interface; and a fourth plug configured to detachably engage with the fourth interface of the connector.

[0014] For example, according to one embodiment of the present disclosure, at least one of the plugs includes a tail and an insertion portion, the insertion portion extending at least partially into the corresponding interface and including a plurality of contacts for electrically contacting branches of pins in the interface, the tail being configured to cover the end of a cable, and the contacts being electrically connected to a strand of wire in the cable.

[0015] For example, according to one embodiment of the present disclosure, an annular tightening portion is provided on the tail end, the annular tightening portion pressing tightly against the outer surface of the cable.

[0016] For example, according to one embodiment of the present disclosure, at least one of the plugs further includes an outer sleeve integrally formed with the insertion portion, wherein the outer sleeve surrounds the interface when the plug is engaged with the corresponding interface.

[0017] For example, according to one embodiment of the present disclosure, a receiving portion is formed on the outer peripheral sleeve and has an opening toward the connector so that the receiving portion is accessible relative to the outside.

[0018] For example, according to one embodiment of the present disclosure, at least one of the plugs further includes a fastening member configured to secure the tail portion to the insertion portion.

[0019] For example, according to one embodiment of this disclosure, the fastener includes a bottom wall and a peripheral wall, the bottom wall abutting against the tail portion, the peripheral wall surrounding at least a portion of the insertion portion, a tongue being provided on one of the peripheral wall and the insertion portion, and a locking groove being provided on the other of the peripheral wall and the insertion portion for receiving the tongue, thereby fixing the tail portion and the insertion portion to each other.

[0020] For example, according to one embodiment of the present disclosure, the fastener is fixedly connected to the insertion portion, the fastener comprising a first half and a second half that are detachable from each other, allowing the cable inserted into the tail portion and the insertion portion to be connected when the first half and the second half are separated, and when the first half and the second half are connected, the fastener simultaneously covers at least a portion of the tail portion and the insertion portion.

[0021] For example, according to one embodiment of this disclosure, the first half and the second half are opposite to and cooperate in a direction perpendicular to the arrangement direction of the tail and the insertion portion.

[0022] For example, according to one embodiment of the present disclosure, a receiving portion is formed on the interface and has an opening facing the plug so that the receiving portion is accessible relative to the outside.

[0023] For example, according to another aspect of this disclosure, a cable system is also proposed, including a wiring device according to any embodiment of this disclosure; and a plurality of cables electrically connected to and fixed to a first plug, a second plug and a third plug of the wiring device, respectively.

[0024] For example, according to one embodiment of this disclosure, the cable system is configured to transmit power and communication signals.

[0025] For example, according to another aspect of this disclosure, a personnel transport device is also proposed, including a wiring device or a cable system according to any embodiment of this disclosure.

[0026] For example, according to one embodiment of this disclosure, the personnel transportation device includes: a car that moves between multiple floors, and a calling device disposed at each floor and configured to call the car. A wiring device is disposed at each floor, and a third plug of the wiring device is connected to the calling device. Attached Figure Description

[0027] The above and other features and advantages of this disclosure will become more apparent from the following detailed description of exemplary embodiments taken in conjunction with the accompanying drawings, which are for illustrative purposes only and are not intended to limit the scope of this disclosure in any way. The following drawings are not intentionally drawn to scale with actual dimensions; their focus is on illustrating the gist of this disclosure. In the figures:

[0028] Figure 1 A perspective view of a wiring device according to an embodiment of the present disclosure is shown from a first-person perspective.

[0029] Figure 2 Shown from a second perspective Figure 1 A perspective view of the wiring device of the embodiment shown.

[0030] Figure 3 Show Figure 1 An exploded perspective view of the wiring device of the illustrated embodiment.

[0031] Figure 4 Show Figure 1 The diagram shows the arrangement of multiple pins in the connector of the wiring device of the embodiment shown.

[0032] Figure 5 Show Figure 1 A perspective view of the connector of the wiring device in the illustrated embodiment.

[0033] Figure 6 Show Figure 1 A perspective view of a plug of the wiring device of the illustrated embodiment.

[0034] Figure 7 Show Figure 1 A partial perspective view of the wiring device of the illustrated embodiment after the first plug and the first interface are connected.

[0035] Figure 8 Show Figure 1 A partial perspective view of the wiring device of the illustrated embodiment after the third and fourth plugs are connected to the third and fourth interfaces.

[0036] Figure 9 A perspective view of a wiring device according to another embodiment of the present disclosure is shown.

[0037] Figure 10 Show Figure 9 A perspective view of a plug of the wiring device of the illustrated embodiment.

[0038] Figure 11 A perspective view of a plug according to another embodiment of the present disclosure is shown.

[0039] In each figure, identical or similar parts are represented by the same reference numerals.

[0040] List of reference numerals

[0041] 100 Wiring Device

[0042] 1 Connector

[0043] 11 First Interface

[0044] 12 Second Interface

[0045] 13 Third Interface

[0046] 14 Fourth Interface

[0047] 15 Insulating molded parts

[0048] 161 L-shaped pin

[0049] 162 T-pins

[0050] 163 I-type pin

[0051] 21 First plug

[0052] 211 Insertion section

[0053] 212 Tail

[0054] 213 Annular tightening part

[0055] 214 Fasteners

[0056] 215 bottom wall

[0057] 216 Surrounding walls

[0058] 217 Part One

[0059] 218 Part Two

[0060] 22 Second plug

[0061] 23 Third plug

[0062] 24. Fourth plug

[0063] 31. Reception Section

[0064] 311 Through-slot

[0065] 32 outer circumferential sleeve

[0066] 33 Flexible Arm

[0067] 331 Protrusion

[0068] 34 tongue

[0069] 35 Lock slot

[0070] 4. Cables Detailed Implementation

[0071] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings.

[0072] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure pertains. The use of terms such as “a,” “an,” or “the” in this patent application specification and claims does not indicate a limitation of quantity, but rather indicates the presence of at least one. Terms such as “comprising” or “including” mean that an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0073] According to one aspect of this disclosure, a wiring device 100 is provided, such as Figure 1 and Figure 2 As shown, the wiring device may include a connector 1 and a plurality of plugs that mate with the connector 1. The connection device 100 according to this disclosure can be used to transmit power and / or communication signals. The connector 1 according to this disclosure may include at least three interfaces, for example, such as... Figure 1 As shown, it includes a first interface 11, a second interface 12, a third interface 13, and a fourth interface 14. Each interface can be connected to a corresponding plug.

[0074] Specifically, such as Figure 3 and Figure 5 As shown, the first interface 11 can be positioned opposite to the second interface 12, and the opening orientation of the first interface 11 can be opposite to that of the second interface 12. The third interface 13 can be positioned between the first interface 11 and the second interface 12, and the opening orientation of the third interface 13 can be perpendicular to the opening orientation of the first interface 11 and the second interface 12. Therefore, the connector 1 can be T-shaped, making it particularly suitable for applications involving elevators that operate vertically between multiple floors. For example, at each floor, the first interface 11 and the second interface 12 can face the upper and lower floors respectively, while the third interface faces the current floor, to connect to the corresponding electrical and / or communication devices on that floor.

[0075] For example, connector 1 may also include a fourth interface 14, which may, for example, be adjacent to one of the first interface 11, the second interface 12, and the third interface 13 described above. Figure 3 and Figure 5 As shown, the fourth interface 14 may be adjacent to one of the third interfaces 13, and may also have the same opening orientation as the third interface 13. For example, the fourth interface is provided to separate power transmission and communication signal transmission, thereby facilitating subsequent connection to the corresponding power and communication devices. In addition, additional fifth and sixth interfaces may also be provided, for example, adjacent to the first interface 11 and the second interface 12, respectively.

[0076] like Figure 3 and Figure 4 As shown, connector 1 may also have multiple pins disposed inside connector 1. Each pin extends to at least two of the first interface 11, the second interface 12, and the third interface 13, thereby enabling electrical connection between these interfaces, and thus enabling electrical connection of plugs (in particular, corresponding contacts in the plugs) that are pluggably connected to these interfaces.

[0077] Therefore, the wiring device according to this disclosure can transform the original solution that relied on manual wiring into an integrated device, which can achieve quick wiring by simply plugging and unplugging, which is simple, convenient, small in size, and easy to maintain.

[0078] Furthermore, such as Figure 3 and Figure 4 As shown, the multiple pins disposed in the connector can have different configurations. For example, the pins may include L-shaped pins 161 with an L-shape, T-shaped pins 162 with a T-shape, and I-shaped pins 163 with an I-shape to achieve different connection functions. These pins may be made of copper, for example.

[0079] For example, the multiple pins include at least one pair of first L-shaped pins 161 and second L-shaped pins 161 with an L-shape (the first and second are only used here to distinguish the two L-shaped pins). The two ends of the first L-shaped pin 161 can extend to the first interface 11 and the third interface 13, respectively, and the two ends of the second L-shaped pin can extend to the second interface 12 and the third interface 13, respectively. Thus, a series connection can be achieved through the paired L-shaped pins 161, for example, connecting the electrical device and / or communication device at the floor where the connector 1 is installed in series to the power route or communication route in the elevator system shaft.

[0080] For example, the multiple pins may also include at least one T-shaped pin 162, which may have three branches extending into the first interface 11, the second interface 12, and the third interface 13 (or the fourth interface 14), respectively. Parallel connections can be achieved via the T-shaped pin 162, for example, connecting electrical devices and / or communication devices at the floor where the connector 1 is located in series to the power or communication routes in the elevator shaft.

[0081] Furthermore, the multiple pins may also include at least one I-shaped pin 163, the two ends of which may extend to the first interface 11 and the second interface 12, respectively. The I-shaped pin 163 is used for direct connection, for example, connecting the power route or communication route above the floor where the connector 1 is installed to the power route or communication route below the floor.

[0082] like Figure 4 The multiple pins shown are arranged close together to form a T-shape, corresponding to the shape of a connector with three interfaces. This arrangement is compact and helps to reduce the size of the wiring device.

[0083] like Figure 3 As shown, connector 1 may also include an insulating molding component 15, which can be used to cover multiple pins to fix and insulate them relative to each other. For example, after positioning multiple pins relative to each other, the insulating molding component 15 covering the multiple pins can be formed by molding, for example, using an insulating material. This arrangement can also avoid magnetic interference between high-voltage power supply circuits and communication circuits. For example, multiple insulating molding components 15 may be included, and forming multiple insulating molding components through multi-step molding can reduce manufacturing difficulty.

[0084] According to embodiments of this disclosure, each interface is equipped with a mating plug, which is pluggably connected to the interface, for example... Figure 1 and Figure 3 The first plug 21, the second plug 22, the third plug 23, and the fourth plug 24 are shown. For example, the plugs may be interference-fitted with the interface to provide waterproofing.

[0085] To further enhance waterproofing, a drainage structure can be provided on at least one of the interfaces and the corresponding plug to allow water to drain out and prevent it from easily seeping into the interface. For example, a receiving portion 31 can be provided on one of the interfaces and the corresponding plug, the receiving portion 31 being, for example, Figure 7 The location shown can be set on the plug (e.g., the first plug 21), or, for example, as... Figure 8 The location shown can be set on the interface (e.g., fourth interface 14). When the interface and the corresponding plug are mated, as... Figure 7 and Figure 8As shown, the receiving section 31 has an open space that is accessible from the outside for collecting accumulated water. A through groove 311 communicating with the open space is provided on the side wall of the receiving section for draining the accumulated water. This arrangement improves the waterproof IP rating of the wiring device.

[0086] Furthermore, if a receiving portion 31 is provided on one of the interface and the corresponding plug, a resilient arm 33 may be provided on the other of the interface and the corresponding plug. For example... Figure 7 and Figure 8 As shown, with the interface and plug engaged, the resilient arm 33 can be at least partially accommodated in the receiving portion 31. For example, as... Figure 5 As shown, the elastic arm 33 can extend in the insertion direction and is connected to the outer peripheral wall of the interface through a connecting part. Therefore, a gap can exist between the elastic arm 33 and the outer peripheral wall of the interface, allowing the elastic arm 33 to swing towards or away from the outer peripheral wall of the interface under the action of an external force. Figure 10 and Figure 11 The same structure of the resilient arm 33 is shown, the only difference being that the resilient arm 33 is located on the plug. A protrusion 331 may be provided on the resilient arm 33, which may, for example, extend perpendicularly to the extending direction of the resilient arm and away from the outer peripheral wall of the interface. Thus, the protrusion 331 can be inserted into a through groove by deformation of the resilient arm to fasten the plug and interface.

[0087] This design cleverly integrates the locking and drainage structures, resulting in a compact layout that saves space and increases the stability and safety of the wiring device.

[0088] The specific structure of the plugs will be described next. The first plug 21, the second plug 22, the third plug 23, and the fourth plug 24 may have the same or similar structures. Therefore, the first plug 21 will be used as an example for explanation below. Figure 6 As shown, the first plug 21 may include a tail portion 212 and an insertion portion 211, wherein the insertion portion 211 may be disposed in front of the tail portion 212 in the insertion direction. The insertion portion 211 may extend at least partially into the corresponding interface and may include a plurality of contacts (not shown) for electrical contact with branches of pins in the interface.

[0089] The tail section 212 can be configured to cover the end of the cable 4, such as... Figure 6As shown, the contacts can be electrically connected to each of the wire cores in the cable to achieve electrical connection between different wire cores and pins. An annular tightening portion 213 can also be provided on the tail 212. The inner diameter of the annular tightening portion 213 can be, for example, smaller than the outer diameter of the cable. Thus, when the cable 4 is placed in the tail 212, the annular tightening portion 213 can tightly press against the outer surface of the cable. With this arrangement, when the cable 4 is subjected to tension, the tension is transmitted to the plug 21 through the outer sheath of the cable 4 and the annular tightening portion 213, rather than through the wire cores in the cable 4. This prevents the electrical connection between the cable and the plug from being broken, thereby increasing the lifespan and stability of the wiring device.

[0090] According to the plug of this embodiment, the tail 212 can be fixed to the cable 4 first, so that the wire core in the cable 4 is connected to the plug, and finally the insertion part 211 and the tail 212 are fixed together, for example by crimping.

[0091] according to Figure 6 In the illustrated embodiment, the first plug 21 may further include an outer sleeve 32, which may be integrally formed with the insertion portion 211. The outer sleeve 32 may be disposed around the insertion portion 211, thereby forming an annular groove between the outer sleeve 32 and the insertion portion 211 to accommodate the outer peripheral wall of the first interface 11. When the first plug 21 is engaged with the corresponding first interface 11, the outer sleeve 32 surrounds the first interface 11.

[0092] like Figure 6 As shown, the receiving portion 31 described above may be formed on the outer peripheral sleeve 32, and the receiving portion 31 has an opening facing the connector so that the receiving portion 31 is accessible relative to the outside, for example, allowing the elastic arm 33 to be inserted and water to enter.

[0093] Figure 9 A wiring device 100 according to another embodiment of the present disclosure is shown, in which a receiving portion 31 is provided on the interface of a connector 1, and a resilient arm 33 is provided on the plug. For example, the receiving portion 31 may be formed on the interface and have an opening facing the plug so that the receiving portion 31 is accessible relative to the outside, for example, allowing the resilient arm 33 to be inserted and water to enter.

[0094] The plugs in this embodiment have different structures; taking the first plug 21 as an example. To facilitate easier relative fixation of the tail 212 and the insertion portion 211, and to facilitate easier electrical connection and fixation between the first plug 21 and the cable 4, the first plug 21 may also include a fastening member 214. This fastening member 214 is used to fix the tail 212 and the insertion portion 211 relative to each other. Figure 10An embodiment of a fastener 214 is shown, which may be a separate component. The fastener 214 may include a bottom wall 215 and a peripheral wall 216, such that the fastener 214 is a box shape with one open side. A through hole may be provided in the bottom wall 215 to accommodate the portion of the tail 212 covering the cable 4. Thus, as... Figure 10 As shown, the fastener can be inserted from the end of the tail 212, such that the bottom wall 215 abuts against the large portion of the tail 212, while the peripheral wall 216 surrounds at least a portion of the insertion portion 211, so as to fix the tail 212 and the insertion portion 211 relative to each other.

[0095] To ensure that the tail portion 212 and the insertion portion 211 are tightly interlocked, a tongue 34 may be provided on one of the peripheral wall 216 and the insertion portion 211, and a locking groove 35 may be provided on the other of the peripheral wall 216 and the insertion portion 211 to accommodate the tongue 34, thereby allowing the tail portion 212 and the insertion portion 211 to be tightly interlocked. For example, as Figure 10 As shown, multiple protrusions 34 can be provided on the insertion part 211, and locking grooves 35 corresponding to the protrusions 34 can be provided on the peripheral wall 216.

[0096] Figure 11 Another embodiment of the fastener 214 is shown. The fastener 214 may be fixedly connected to the insertion portion 211 or the tail portion 212 or be integrally formed, thereby preventing the fastener 214 from being lost. Figure 11 As shown, the fastener 214 is fixedly connected to the insertion portion 211, for example, to one end of the insertion portion 211 near the tail portion 212. According to this example, the fastener 214 may include a first half 217 and a second half 218 that are detachable from each other. The first half 217 and the second half 218 may be opposite each other and engage with each other in a direction perpendicular to the arrangement direction of the tail portion 212 and the insertion portion 21 (i.e., the insertion direction of the plug). With the first half 217 and the second half 218 separated, a cable 4 inserted into the tail portion 212 and the insertion portion 211 can be connected. With the first half 217 and the second half 218 connected, the fastener 214 may simultaneously cover at least a portion of the tail portion 212 and the insertion portion 211 to achieve mutual fixation.

[0097] For example, according to another aspect of this disclosure, a cable system is also proposed, which can be configured to transmit power and communication signals. It may include wiring devices 100 according to this disclosure; for example, the cable system may include multiple wiring devices 100 according to this disclosure. The fundamentally disclosed cable system may also include multiple cables 4. The multiple cables 4 may be electrically connected and secured to a first plug 21, a second plug 22, a third plug 23, and a fourth plug 24 of the wiring devices 100, respectively. For example, one end of one cable 4 may be connected to the first plug 21 of one wiring device 100, and the other end may be connected to the second plug 22 of another wiring device 100 to connect the two wiring devices 100. For example, one end of one cable 4 may be connected to the third connector 23 of one wiring device 100, and the other end may be connected to an electrical device; another cable 4 may be connected to the fourth connector 24 of one wiring device 100, and the other end may be connected to a communication device.

[0098] For example, according to another aspect of this disclosure, a passenger transport device (not shown) is also proposed, comprising a car that moves between multiple floors. The passenger transport device may also include a call device, which may be located on each floor and configured to call the car; this call device may be, for example, both an electrical device and a caller. To connect the power and communication routes of the call device on each floor to the power and communication routes of the passenger transport device, a wiring device 100 according to this disclosure may also be provided on each floor, with a third plug 13 and a fourth plug 14 of the wiring device 100 connectable to the aforementioned call device. For example, a first interface 11 of the wiring device 100 on one floor may be connected to a second interface 12 of the wiring device 100 on the floor above it via a cable 4 fitted with a plug, and a first interface 11 of the second interface of the wiring device 100 on that floor may be connected to a second interface of the wiring device 100 on the floor below it via a cable 4 fitted with a plug.

[0099] Certain features, structures, or characteristics in one or more embodiments of this disclosure may be appropriately combined.

[0100] The foregoing description is illustrative of the present disclosure and should not be construed as limiting it. While several exemplary embodiments of the present disclosure have been described, those skilled in the art will readily understand that many modifications may be made to the exemplary embodiments without departing from the novel teachings and advantages of the present disclosure. Therefore, all such modifications are intended to be included within the scope of the present disclosure as defined in the claims. It should be understood that the foregoing description is illustrative of the present disclosure and should not be construed as limiting it to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of this disclosure.

Claims

1. A wiring device, characterized in that, include: A connector, comprising at least three interfaces, said interfaces including: First interface The second interface is positioned opposite to the first interface, and its opening faces the opposite direction to that of the first interface. A third interface is disposed between the first interface and the second interface, and its opening orientation is perpendicular to the opening orientation of the first interface and the second interface. Multiple pins are disposed inside the connector, each pin extending to at least two of the first interface, the second interface, and the third interface. At least three plugs, three of which are configured to be pluggably connected to the first, second, and third interfaces of the connector, respectively.

2. The wiring device according to claim 1, characterized in that, A receiving portion is provided in at least one of the interfaces and the corresponding plugs. When the interfaces and the plugs are engaged, the receiving portion has a free space that is accessible from the outside. A through groove communicating with the free space is provided on the side wall of the receiving portion.

3. The wiring device according to claim 2, characterized in that, At least one of the interfaces and the corresponding plugs is provided with a resilient arm, which is at least partially accommodated in the receiving portion when the interfaces and the plugs are engaged. The resilient arm is provided with a protrusion configured to be inserted into the through slot by deformation of the resilient arm.

4. The wiring device according to claim 1, characterized in that, The plurality of pins includes at least one pair of first L-shaped pins and second L-shaped pins having an L shape, wherein the two ends of the first L-shaped pin extend to the first interface and the third interface, respectively, and the two ends of the second L-shaped pin extend to the second interface and the third interface, respectively.

5. The wiring device according to claim 4, characterized in that, The plurality of pins also includes at least one T-shaped pin having three branches extending into the first interface, the second interface and the third interface respectively.

6. The wiring device according to claim 5, characterized in that, The plurality of pins also includes at least one I-shaped pin, the two ends of which extend to the first interface and the second interface, respectively.

7. The wiring device according to claim 1, characterized in that, The multiple pins are fixed relative to each other by being encased in an insulating mold.

8. The wiring device according to claim 1, characterized in that, The wiring device further includes: The fourth interface is located adjacent to the third interface and has the same opening orientation as the third interface. The fourth plug is configured to detachably engage with the fourth interface of the connector.

9. The wiring device according to any one of claims 1-8, characterized in that, At least one of the plugs includes a tail and an insertion portion, the insertion portion extending at least partially into the corresponding interface and including a plurality of contacts for electrically contacting branches of pins in the interface, the tail being configured to cover the end of a cable, and the contacts being electrically connected to a strand of wire in the cable.

10. The wiring device according to claim 9, characterized in that, An annular tightening part is provided on the tail end, and the annular tightening part presses tightly against the outer surface of the cable.

11. The wiring device according to claim 9, characterized in that, At least one of the plugs further includes an outer sleeve, which is integrally formed with the insertion portion, and the outer sleeve surrounds the interface when the plug is engaged with the corresponding interface.

12. The wiring device according to claim 11, characterized in that, A receiving portion is formed on the outer peripheral sleeve and has an opening facing the connector so that the receiving portion can be accessed relative to the outside.

13. The wiring device according to claim 9, characterized in that, At least one of the plugs further includes a fastener configured to secure the tail portion to the insertion portion.

14. The wiring device according to claim 13, characterized in that, The fastener includes a bottom wall and a peripheral wall. The bottom wall abuts against the tail portion, and the peripheral wall surrounds at least a portion of the insertion portion. A tongue is provided on one of the peripheral wall and the insertion portion, and a locking groove is provided on the other of the peripheral wall and the insertion portion to accommodate the tongue, thereby fixing the tail portion and the insertion portion to each other.

15. The wiring device according to claim 13, characterized in that, The fastener is fixedly connected to the insertion part. The fastener includes a first half and a second half that are detachable from each other. When the first half and the second half are separated, the cable inserted into the tail and the insertion part are allowed to be connected. When the first half and the second half are connected, the fastener covers at least a portion of the tail and the insertion part.

16. The wiring device according to claim 15, characterized in that, The first half and the second half are opposite to and cooperate in a direction perpendicular to the arrangement direction of the tail and the insertion part.

17. The wiring device according to claim 13, characterized in that, A receiving portion is formed on the interface and has an opening facing the plug so that the receiving portion can be accessed relative to the outside.

18. A cable system, characterized in that, include: The wiring device according to any one of claims 1-17; and Multiple cables are electrically connected and fixed to the first plug, second plug and third plug of the wiring device, respectively.

19. The cable system according to claim 18, characterized in that, The cable system is configured to transmit power and communication signals.

20. A personnel transport device, characterized in that, Includes the wiring device according to any one of claims 1-17 or the cable system according to any one of claims 18-19.

21. The personnel transport device according to claim 20, characterized in that, The personnel transport device includes: The elevator car moves between multiple floors. Calling devices are installed on each floor and configured to call the elevator car. One of the aforementioned wiring devices is installed on each floor, and the third plug of the wiring device is connected to the call device.

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