Protective device for elevator branch cable connection and elevator comprising such device

Abstract

The utility model relates to a protection device for elevator branch cable connection and an elevator comprising the same. The protection device used for elevator branch cable connection comprises a pipe sleeve, the main body of the pipe sleeve is a cylindrical hollow pipe, a cavity is arranged in the pipe sleeve, the pipe sleeve has two ends, one end is closed, and the other end is open; wherein the other end of the pipe sleeve is circumferentially provided with a bulge which is a ribbon ring. The cable tie ring is used for avoiding the situation that the surface of the sleeve is smooth, and the cable tie is prone to slipping and is not firm when bound. According to the protection device used for connection between the elevator branch cables, the technical problems that existing branch cables are complex in connection and tedious in machining can be solved, the protection method of branch points is changed, and the hoistway branch cable which is convenient to use, environmentally friendly, reliable in connection and simple in structure is provided.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and more specifically, to a protective device for connecting branch cables in an elevator and an elevator including the device. Background Technology

[0002] In the elevator industry, shaft branch cables are used. A shaft branch cable is a cable laid in the elevator shaft between the elevator call box and door lock and the control cabinet. The cable leading from the control cabinet is the main cable. A cable connection point, also known as a branch point, is made at the double floors of the elevator, i.e., the 2nd, 4th, 6th... floors, and the top floor level position. The conductors of the call box branch cable and the lock branch cable leading from the door lock of the adjacent two floors are connected to the connection point of the main cable according to the regulations, so as to realize the electrical control of the call box and door lock by the control cabinet.

[0003] Currently, elevator branch cables all use closed-end terminals to connect the conductors between cables, such as... Figure 4 As shown, the crimped terminal is inserted into the junction box, and the main cable core is fixed inside the junction box using a saddle clamp and sheath. Then, a sealing ring is installed at the top of the junction box, and a sealing strip is installed on the top cover. Finally, screws are tightened on the top and sides of the junction box for secure sealing and protection. This connection process is complex and cumbersome. Using a junction box for assembly increases labor and material costs and reduces production efficiency. Furthermore, the branch cable manufacturing structure requires a sealing ring at the top of each branch point. If the sealing ring's hole diameter is uneven and there are gaps in its fit with the cable, the waterproof performance of the entire branch point will be affected.

[0004] Therefore, there is an urgent need to develop a device with simple processing technology and efficient assembly to effectively protect the branching points of the cables connecting the branching points in the elevator shaft. Summary of the Invention

[0005] The technical problem this invention aims to solve is that the existing technology for protection devices at the branching points of cables connecting branching points in ladder shafts is complex to manufacture, troublesome to process, inefficient, and may also affect waterproof performance.

[0006] To address the aforementioned technical problems, according to one aspect of this utility model, a protective device for connecting branch cables in elevators is provided, comprising: a sleeve, the main body of which is a cylindrical hollow tube with an internal cavity; the sleeve has two ends, one closed and the other open; wherein, a circumferential protrusion, serving as a cable tie loop, is provided at the other end of the sleeve. The cable tie loop is used to prevent the cable tie from slipping easily and becoming loosely secured due to the smooth surface of the sleeve.

[0007] According to an embodiment of the present invention, a constriction portion may be provided at the tie ring on the other end of the sleeve body near the opening, and the inner diameter of the constriction portion is smaller than the inner diameter of the sleeve body.

[0008] According to an embodiment of this utility model, the closed end of the tube sleeve can be spherical.

[0009] According to an embodiment of this utility model, the sleeve can be made of a soft material.

[0010] According to an embodiment of this utility model, the sleeve can be made of PVC material.

[0011] According to an embodiment of this utility model, the sleeve is made of flame-retardant material and has flame-retardant function.

[0012] According to an embodiment of this utility model, the sleeve can be integrally formed.

[0013] According to an embodiment of the present invention, the protective device for connecting elevator branch cables may further include: a cable tie, used to grip the sleeve at the outside of the sleeve and at the cable tie ring, to bundle and fix the sleeve, and to fix the branch cable.

[0014] According to an embodiment of this utility model, the cable tie specification can be 7.6*300mm.

[0015] According to another aspect of this utility model, an elevator is provided, comprising: an elevator call box, a door lock and a control cabinet, a call box branch cable led from the elevator call box, a door lock branch cable led from the door lock, and a main cable led from the control cabinet. The call box branch cable, the door lock branch cable, and the main cable form a branch cable that needs to be connected, and a protection device for connecting the elevator branch cable as described above. The branch cable is connected and protected by the protection device for connecting the elevator branch cable. The closed end of the sleeve faces upward, and the open end faces downward. The sleeve covers the elevator branch cable, and the cable tie is used to secure it on the outside of the sleeve and above the cable tie ring, thereby providing waterproofing and protection for the branch cable.

[0016] Compared with the prior art, the technical solution provided by the embodiments of this utility model can achieve at least the following beneficial effects:

[0017] The protective device for connecting elevator branch cables provided by this utility model can overcome the technical problems of complex connection and cumbersome processing of existing branch cables, change the protection method of branch points, and provide a convenient, environmentally friendly, reliable connection and simple structure shaft branch cable.

[0018] This utility model provides a protective device for connecting branch cables in elevators. The main cable and branch cable cores are connected using closed-end terminals and placed inside a flame-retardant PVC sleeve. The flame-retardant PVC sleeve is made of flame-retardant material and is sealed at the top. After assembly, the sleeve, with its top facing upwards, provides reliable waterproofing and is easy to install and maintain. Simultaneously, a cable tie loop is added to the tail of the sleeve to further enhance the waterproof and dustproof effect at the branch point and prevent the sleeve from slipping off the branch point after being secured with cable ties. The branch point no longer requires saddle clamps and related screws, simplifying the production process, reducing material costs, and improving production efficiency. This provides a convenient, environmentally friendly, and waterproof protective device for elevator branch cables.

[0019] This utility model provides a protective device for connecting branch cables in elevators. It utilizes a flame-retardant PVC sleeve fitted over the branch point of the crimp terminal, employing a top semi-circular arc sealing structure. During installation, the top sealing side of the sleeve faces upwards and towards the machine room end to prevent water droplets inside the shaft from directly flowing into or seeping into the branch point terminal, thus ensuring the branch point's waterproof performance. A cable tie loop is added to the end of the sleeve, and a cable management strap is used to secure the connection, preventing it from easily falling off.

[0020] Based on the inherent properties of flame-retardant PVC conduit: simple structure, easy assembly, environmentally friendly and waterproof performance, providing a safer and more stable waterproof conduit solution. All wiring is connected within a single waterproof and flame-retardant PVC conduit, saving space and cost while facilitating subsequent inspection and maintenance. This solves the problems of high manufacturing costs, proneness to poor sealing ring assembly, large space occupation by the junction box, and inconvenient post-installation inspection and maintenance associated with existing junction boxes.

[0021] According to the protective device for connecting branch cables in elevators provided by this utility model, the flame-retardant PVC conduit branch cable for elevator shafts of this invention changes the traditional branch point processing method. The main cable from the cable control cabinet to the power supply box is cut with the cable core, and the branch point cable is stripped of its sheath using pneumatic equipment. The main cable and branch cable cores to be connected at the branch point are crimped with closed-end terminals for electrical connection, achieving a fixed connection and conductivity. Because the main cable is bundled by folding and wrapping when connecting to the branch cable, and three cable ties are used at the fold point, it does not affect the tensile strength of the main cable, is not easy to fall off, and does not damage the cable, making processing convenient. After the call box branch cable is connected to the main cable, the flame-retardant PVC conduit provides good shock resistance, airtightness, and waterproof performance at the branch point, ensuring good power supply reliability. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this utility model, and are not intended to limit this utility model.

[0023] Figure 1 This is a schematic diagram of a sleeve for a protective device for connecting elevator branch cables according to an embodiment of the present invention;

[0024] Figures 2-3 This is an application diagram illustrating a protective device for connecting branch cables in an elevator according to an embodiment of the present invention.

[0025] Figure 4 It is an existing elevator branch cable connection protection device. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] 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 invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a limitation of quantity, but rather indicate the presence of at least one.

[0028] Figure 1 This is a schematic diagram of a sleeve for a protective device for connecting elevator branch cables according to an embodiment of the present invention.

[0029] like Figure 1 As shown, the protective device for connecting elevator branch cables includes a sleeve. The main body of the sleeve is a cylindrical hollow tube with an internal cavity. The sleeve has two ends, one closed and the other open. A circumferential protrusion, a cable tie ring 1, is provided at the other end of the sleeve. The cable tie ring 1 is used to prevent the cable tie 3 from slipping off easily and becoming loosely secured due to the smooth surface of the sleeve.

[0030] The protective device for connecting elevator branch cables provided by this utility model can overcome the technical problems of complex connection and cumbersome processing of existing branch cables, change the protection method of branch points, and provide a convenient, environmentally friendly, reliable connection and simple structure shaft branch cable.

[0031] According to one or more embodiments of the present invention, a closing portion 2 is provided at the other end of the tube body near the opening at the cable tie ring 1, and the inner diameter of the closing portion 2 is smaller than the inner diameter of the tube body.

[0032] According to one or more embodiments of the present invention, the closed end of the tube is spherical.

[0033] This utility model provides a protective device for connecting branch cables in elevators. It utilizes a sleeve fitted over the branch point of the crimp terminal, employing a top semi-circular arc sealing structure. During installation, the top sealing side of the sleeve faces upwards and towards the machine room end to prevent water droplets inside the shaft from directly flowing into or seeping into the branch point terminal, thus ensuring the branch point's waterproof performance. A cable tie ring 1 is added to the end of the sleeve, and a cable management strap 3 is used to secure the sleeve, ensuring a firm connection and preventing it from easily falling off.

[0034] According to one or more embodiments of this utility model, the sleeve is made of a soft material.

[0035] According to one or more embodiments of this utility model, the sleeve is made of PVC material.

[0036] According to one or more embodiments of this utility model, the sleeve is made of flame-retardant material and has flame-retardant function.

[0037] This utility model provides a protective device for connecting branch cables in elevators. The main cable and branch cable cores are connected using closed-end terminals and placed inside a flame-retardant PVC sleeve. The flame-retardant PVC sleeve is made of flame-retardant material and is sealed at the top. After assembly, the sleeve, with its top facing upwards, provides reliable waterproofing and is easy to install and maintain. Simultaneously, a cable tie loop 1 is added to the tail of the sleeve to further enhance the waterproof and dustproof effect at the branch point and prevent the sleeve from slipping off the branch point after being bundled with cable ties 3. The branch point no longer requires saddle clamps and related screws, simplifying the production process, reducing material costs, and improving production efficiency. This provides a convenient, environmentally friendly, and waterproof protective device for elevator branch cables.

[0038] Based on the inherent properties of flame-retardant conduits: simple structure, easy assembly, environmentally friendly and waterproof performance, providing a safer and more stable waterproof conduit solution. All wiring is connected within a single waterproof and flame-retardant conduit, saving space and cost while facilitating subsequent inspection and maintenance. This solves the problems of high manufacturing costs, proneness to poor sealing ring assembly, large space occupation by the junction box, and inconvenient post-installation inspection and maintenance associated with existing junction boxes.

[0039] According to one or more embodiments of this utility model, the sleeve is integrally formed.

[0040] According to one or more embodiments of the present invention, the protective device for connecting elevator branch cables further includes: a cable tie 3, used to grip the sleeve on the outside of the sleeve and at the cable tie ring 1, to bundle and fix the sleeve and fix the branch cable.

[0041] According to one or more embodiments of the present invention, the cable tie 3 has a specification of 7.6*300mm.

[0042] Figures 2-3 This is an application diagram illustrating a protective device for connecting branch cables in an elevator according to an embodiment of the present invention.

[0043] According to another aspect of this utility model, an elevator is provided, comprising: an elevator call box, a door lock and a control cabinet, a call box branch cable led out from the elevator call box, a door lock branch cable led out from the door lock, a main cable led out from the control cabinet, the call box branch cable, the door lock branch cable and the main cable forming a branch cable to be connected, and a protection device for connecting the elevator branch cable as described above, wherein the branch cable is connected and protected by the protection device for connecting the elevator branch cable, wherein the closed end of the sleeve faces upward and the open end faces downward, the sleeve covers the elevator branch cable, and is secured by a cable tie 3 on the outside of the sleeve and above the cable tie ring 1, thereby providing waterproofing and protection for the branch cable.

[0044] According to the protective device for connecting branch cables in elevators provided by this utility model, the elevator shaft branch cable with sleeve has changed the traditional branch point processing method. The main cable from the cable control cabinet to the power supply box is cut with the cable core, and the branch point cable is stripped of its sheath using pneumatic equipment. The main cable and branch cable cores to be connected at the branch point are crimped with closed-end terminals for electrical connection, achieving a fixed connection and conductivity. Because the main cable is bundled by folding and wrapping when connecting to the branch cable, and three cable ties are used at the fold point, it does not affect the tensile strength of the main cable, is not easy to fall off, and does not damage the cable, making processing convenient. After the call box branch cable is connected to the main cable, a flame-retardant PVC sleeve is used to give the branch point good shock resistance, airtightness, and waterproof performance, ensuring good power supply reliability.

[0045] The above description is merely an exemplary embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. The scope of protection of the present utility model is determined by the appended claims.

Claims

1. A protective device for connecting branch cables in elevators, characterized in that, include: The sleeve is a cylindrical hollow tube with an internal cavity. The sleeve has two ends, one closed and the other open. The other end of the sleeve has a circumferential protrusion that serves as a cable tie loop.

2. The protective device for elevator branch cable connection as described in claim 1, characterized in that, The other end of the tubing body near the opening is provided with a constriction section at the cable tie loop, and the inner diameter of the constriction section is smaller than the inner diameter of the tubing body.

3. The protective device for elevator branch cable connection as described in claim 1, characterized in that, The closed end of the tube is spherical.

4. The protective device for elevator branch cable connection as described in claim 1, characterized in that, The sleeve is made of a soft material.

5. The protective device for elevator branch cable connection as described in claim 1, characterized in that, The sleeve is made of PVC.

6. The protective device for elevator branch cable connection as described in claim 1, characterized in that, The sleeve is made of flame-retardant material and has flame-retardant function.

7. The protective device for elevator branch cable connection as described in claim 1, characterized in that, The sleeve is integrally formed.

8. The protective device for elevator branch cable connection as described in claim 1, characterized in that, Also includes: Cable tie is used to secure the sleeve and fix branch cables on the outside of the sleeve and at the cable tie ring.

9. The protective device for elevator branch cable connection as described in claim 8, characterized in that, The cable tie has a specification of 7.6*300mm.

10. An elevator, characterized in that, include: The elevator call box, door lock and control cabinet, call box branch cable from the elevator call box, door lock branch cable from the door lock, main cable from the control cabinet, wherein the call box branch cable, door lock branch cable and main cable form a branch cable that needs to be connected, and a protection device for connecting elevator branch cables as described in any one of claims 1-9. The branch cable is connected and protected by the protective device for connecting elevator branch cables. The closed end of the sleeve faces upward and the open end faces downward. The sleeve is fitted with the elevator branch cable and is secured by a cable tie on the outside of the sleeve and above the cable tie ring, thereby providing waterproofing and protection for the branch cable.

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