Contactor mute box

Abstract

The utility model discloses a contactor mute box which comprises a bottom box and a top box. The bottom box is provided with an open end, and each inner wall surface of the bottom box is covered with a first silencing layer; the bottom box is also provided with an assembling outer wall surface; an assembly hole and a shock pad are arranged on the assembly outer wall surface; the top box is provided with an open end, and each inner wall surface of the top box is covered with a second silencing layer; the bottom box and the top box have a combined state in which the open ends of the bottom box and the top box are butted with each other; in the combined state, a threading gap is formed between at least one set of side walls on the same side of the bottom box and the top box, and first silencing cotton is contained in the threading gap. According to the utility model, the noise of the contactor arranged in the mute box can be reduced, the noise at the moment of actuation and release of the alternating current contactor is reduced by more than 15dB, and the use requirements of an elevator control cabinet are effectively met.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to a contactor silent box. Background Technology

[0002] Conventional elevator control cabinets are equipped with contactors, which control the elevator's operation through their engagement and disengagement. The noise level during contactor engagement and disengagement can reach approximately 68 dB, making it the primary source of noise in the control cabinet. For machine-room-less elevators, where noise control from the control cabinet is more stringent, DC silent contactors or specially designed silent contactors are typically used. These silent contactors produce noise levels at engagement and disengagement that are at least 10 dB lower than conventional contactors, but they are relatively more expensive and still do not meet the required noise levels. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to propose a contactor noise reduction box, which can reduce the noise of the contactor installed in the noise reduction box by more than 15dB during the instantaneous engagement and release of the AC contactor, effectively meeting the usage requirements of elevator control cabinets.

[0004] The technical solution of this utility model is achieved as follows: a contactor silent box, comprising a bottom box and a top box;

[0005] The bottom box has an open end, and each inner wall surface of the bottom box is covered with a first sound-absorbing layer; the bottom box also has an assembly outer wall surface; the assembly outer wall surface is provided with assembly holes and shock-absorbing pads;

[0006] The top box has an open end, and each inner wall surface of the top box is covered with a second sound-absorbing layer;

[0007] The bottom box and the top box are in an assembly state in which their open ends are connected to each other;

[0008] In the combined state, a threading gap is formed between at least one set of sidewalls on the same side of the bottom box and the top box, and a first sound-absorbing cotton is accommodated in the threading gap.

[0009] Furthermore, a second sound-absorbing cotton is provided on the end face of the open end of the top box and / or the end face of the open end of the bottom box; in the combined state, the second sound-absorbing cotton is sealed between the bottom box and the top box.

[0010] Furthermore, the threading gap is formed between two sets of sidewalls on the same side of the bottom box and the top box.

[0011] Furthermore, recessed spaces are provided on the edges of the open end of the bottom box and the open end of the top box; the first sound-absorbing cotton is fixed in the recessed space on the bottom box or the recessed space on the top box; in the combined state, the recessed space on the bottom box and the recessed space on the top box combine to form the threading gap, and the first sound-absorbing cotton is inserted from the recessed space on one side into the recessed space on the other side.

[0012] Furthermore, the outer wall surface of the assembly is provided with perforations; the perforations penetrate the side wall of the bottom box and the first sound-absorbing layer at the corresponding position.

[0013] Furthermore, a locking assembly is provided between the bottom box and the top box; the locking assembly includes a first assembly and a second assembly;

[0014] The first component includes a connector and a connector fitting; of the bottom box and the top box, the connector is provided on one and the connector fitting is provided on the other; the connector fitting is provided with a socket; in the combined state, the connector and the socket are connected and fitted together along a first direction; the first direction is the length direction or the width direction of the bottom box and the top box.

[0015] The second component includes a first locking plate, a second locking plate, and a fastener; of the bottom box and the top box, the first locking plate is disposed on one and the second locking plate is disposed on the other; in the combined state, the fastener has a locked state in which it passes through the first locking plate and the second locking plate and locks them together, and also has an unlocked state.

[0016] Furthermore, the bottom box is provided with a mounting rail for assembling a contactor; both ends of the mounting rail are fixedly connected to the bottom box, and the mounting rail is away from the first sound-absorbing layer on the bottom surface of the bottom box.

[0017] Furthermore, both the first and second sound-absorbing layers are made of sound-absorbing cotton.

[0018] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0019] 1. This utility model utilizes a top box and a bottom box to form a soundproof box. The contactor is arranged within the enclosed space inside the soundproof box. By arranging a first sound-absorbing layer on the inside of the bottom box and a second sound-absorbing layer on the inner wall of the top box, the noise of the contactor installed in the soundproof box can be reduced, lowering the noise by more than 15dB at the moment the AC contactor engages and disengages. A first sound-absorbing cotton is incorporated in the wiring gap, allowing the contactor cable to enter and exit the soundproof box through the gap. The cable is wrapped by the first sound-absorbing cotton to effectively prevent noise transmission, thus effectively meeting the usage requirements of the elevator control cabinet.

[0020] 2. This utility model uses a locking component to lock the top box and bottom box together by inserting the plug into the socket on the plug mating part and locking the first locking piece and the second locking piece with fasteners. The whole assembly and disassembly are convenient, time-saving and labor-saving, and highly practical. Attached Figure Description

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0022] Figure 1 This is a three-dimensional structural diagram of the overall structure of this utility model;

[0023] Figure 2 for Figure 1 A sectional view of the structure;

[0024] Figure 3 for Figure 1 Exploded view;

[0025] Figure 4 for Figure 1 A three-dimensional structural diagram from another perspective;

[0026] Figure 5 This is a three-dimensional structural diagram of the bottom box of this utility model;

[0027] Figure 6 This is a three-dimensional structural schematic diagram of the base box of this utility model from another perspective;

[0028] Figure 7 for Figure 6 Exploded view;

[0029] Figure 8 This is a three-dimensional structural diagram of the set-top box of this utility model;

[0030] The components are: 1. Base box; 11. First sound-absorbing layer; 12. Assembly outer wall surface; 121. Assembly hole; 122. Perforation; 13. Vibration damping pad; 2. Top box; 21. Second sound-absorbing layer; 3. Recessed space; 31. First sound-absorbing cotton; 4. Insertion fitting; 41. Socket; 5. Insertion fitting; 6. First locking plate; 7. Second locking plate; 8. Rail; 9. Second sound-absorbing cotton. Detailed Implementation

[0031] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0032] like Figure 1-8The diagram shows a contactor soundproof box as described in this embodiment. This soundproof box is fixed inside the elevator control cabinet, and the contactor is installed inside the soundproof box. The soundproof box includes a base box 1 and a top box 2. Both the base box 1 and the top box 2 are square box structures. The base box 1 has an open end, allowing free entry and exit. Each inner wall surface of the base box 1 (i.e., four side walls and one bottom wall) is covered with a first sound-absorbing layer 11. The base box 1 also has a mounting outer wall surface 12. This mounting outer wall surface is formed on the outer side of the bottom wall. Mounting holes 121 are machined on the mounting outer wall surface 12, through which the base box 1 can be fixed inside the control cabinet using bolt assemblies. A shock-absorbing pad 13 is also covered on the mounting outer wall surface 12. The shock-absorbing pad 13 is a rubber component. During assembly, the shock-absorbing pad 13 is sandwiched between the base box 1 and the control cabinet to buffer and absorb vibrations in the base box 1. The top box 2 has an open end through which it can freely enter and exit. Each inner wall surface of the top box 2 (i.e., the four side walls and one bottom wall) is covered with a second sound-absorbing layer 21. Both the first sound-absorbing layer 11 and the second sound-absorbing layer 21 are made of existing sound-absorbing cotton. Through this structural design, the first sound-absorbing layer 11 and the second sound-absorbing layer 21 can absorb internal noise from the bottom box 1 and the top box 2.

[0033] The outer wall surface 12 of the assembly is provided with perforations 122. The perforations 122 penetrate the side wall of the base box 1 and the corresponding first sound-absorbing layer 11. The aforementioned shock-absorbing pad 13 covers the outer wall surface 12 of the assembly, and the shock-absorbing pad 13 has clearance holes corresponding to the assembly holes 121 and perforations 122. The arc extinguisher is installed and fixed using screws through these perforations 122.

[0034] The aforementioned bottom box 1 and top box 2 are arranged in an assembly state where their open ends are joined together. In this assembly state, the bottom box 1 and top box 2 cooperate to form a soundproof box. Furthermore, in this assembly state, a wire-passing gap is formed between at least one set of sidewalls on the same side of the bottom box 1 and top box 2. The contactor cable can enter and exit the soundproof box through this wire-passing gap. A first sound-absorbing cotton 31 is accommodated within the wire-passing gap. The first sound-absorbing cotton 31 seals the wire-passing gap. The first sound-absorbing cotton 31 has high elasticity and a designed flame-retardant rating. When the cable is inserted into the wire-passing gap, the cable can be pre-cut, and the cable is inserted at the cut position of the first sound-absorbing cotton 31, so that the cable is wrapped by the first sound-absorbing cotton 31 to prevent noise from being transmitted through the wire-passing gap.

[0035] Specifically, two sets of the aforementioned threading gaps are arranged between the left and right side walls of the bottom box 1 and the top box 2. In the specific structural design, recessed spaces 3 are formed on the edges of the open ends of the bottom box 1 and the top box 2. These recessed spaces 3 extend along the edges of the top box 2 and the bottom box 1. The first sound-absorbing cotton 31 is a long strip structure, which is pasted and fixed in the recessed space 3 on the bottom box 1 or the recessed space 3 on the top box 2. In the aforementioned combined state, the recessed spaces 3 on the bottom box 1 and the top box 2 combine to form the threading gap, and the first sound-absorbing cotton 31 is inserted from the recessed space 3 on one side into the recessed space 3 on the other side to seal the threading gap.

[0036] A second sound-absorbing cotton 9 is arranged on the open end face of the top box 2 and / or the open end face of the bottom box 1. In this assembled state, the second sound-absorbing cotton 9 seals between the bottom box 1 and the top box 2 to block the gap between the top box 2 and the bottom box 1, thereby preventing internal noise from being transmitted outward. It should be noted that when the bottom box 1 and the top box 2 are fully assembled, the second sound-absorbing cotton 9 will be almost completely compressed into a flat shape.

[0037] In this embodiment, a locking assembly is provided between the bottom box 1 and the top box 2 to lock and fix them together in the assembled state. The locking assembly includes a first component and a second component, located on the left and right sides of the soundproof box. The first component includes a connector 5 and a mating connector 4. The connector 5 is fixedly mounted on one of the bottom box 1 and the top box 2, while the mating connector 4 is fixedly mounted on the other. The mating connector 4 has left-right extending slots 41. When the bottom box 1 and the top box 2 are in the assembled state, the connector 5 and the slots 41 are engaged along a first direction to restrict the vertical movement of the bottom box 1 and the top box 2. This first direction is the left-right direction, which is the length or width direction of the bottom box 1 and the top box 2. The second component includes a first locking plate 6, a second locking plate 7, and fasteners. Of the bottom box 1 and the top box 2, a first locking plate 6 is fixedly installed on one, and a second locking plate 7 is fixedly installed on the other. When the top box 2 and the bottom box 1 are in the aforementioned combined state, the fastener has a locked state in which it passes through the first locking plate 6 and the second locking plate 7 and locks them together, and a unlocked state in which the first locking plate 6 and the second locking plate 7 can move relative to each other. The fastener can be a bolt assembly, with through holes machined on the corresponding first locking plate 6 and the second locking plate 7 for the bolt assembly to pass through. The fastener can also be a screw, with through holes machined on the corresponding first locking plate 6 for the screw to pass through, and threaded holes machined on the second locking plate 7 for threaded connection with the screw. Through the above structural design, the plug-in piece 5 is inserted into the socket 41 on the plug-in mating piece 4, and the first locking plate 6 and the second locking plate 7 are locked by the fastener, so as to realize the mutual combination and fixation of the top box 2 and the bottom box 1. The whole assembly and disassembly are convenient, time-saving, labor-saving, and highly practical.

[0038] The base box 1 contains a mounting rail 8 for assembling contactors. The two ends of the mounting rail 8 are fixedly connected to the opposite side walls of the base box 1 via connectors, and the mounting rail 8 is located away from the first sound-absorbing layer 11 on the bottom surface of the base box 1. Each contactor is mounted on the mounting rail 8 to mitigate the vibration and impact of contactor engagement and disengagement.

[0039] During assembly, the shock-absorbing pads 13 on the base box 1 are abutted against the mounting plate of the control cabinet and then secured with bolts. Each contactor is fixed inside the base box 1 via the guide rails 8, with the contactor cables passing through the cable guide gap. The open end of the top box 2 is aligned with the open end of the base box 1, and the top box 2 and base box 1 are pushed to move left and right relative to each other, allowing the connector 5 to insert into the socket 41 of the connector 4. Then, the first locking plate 6 and the second locking plate 7 are locked with fasteners, while the remaining space in the cable guide gap is filled with the first sound-absorbing cotton 31. Through this combination, the top box 2 and the base box 1 are assembled to form a silent box. The contactors are arranged within the enclosed space inside the silent box. By arranging a first sound-absorbing layer 11 inside the bottom box 1 and a second sound-absorbing layer 21 on the inner wall of the top box 2, the noise of the contactor installed in the soundproof box can be reduced, and the noise at the moment of the AC contactor's engagement and release can be reduced by more than 15dB. By accommodating a first sound-absorbing cotton 31 in the wire threading gap, the contactor's cable enters and exits the soundproof box through the wire threading gap, and the cable can be wrapped by the first sound-absorbing cotton 31 to effectively prevent noise transmission and effectively meet the usage requirements of the elevator control cabinet.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A contactor silent housing, comprising a bottom housing and a top housing; characterized in that: The bottom box has an open end, and each inner wall surface of the bottom box is covered with a first sound-absorbing layer; the bottom box also has an assembly outer wall surface; the assembly outer wall surface is provided with assembly holes and shock-absorbing pads; The top box has an open end, and each inner wall surface of the top box is covered with a second sound-absorbing layer; The bottom box and the top box are in an assembly state in which their open ends are connected to each other; In the combined state, a threading gap is formed between at least one set of sidewalls on the same side of the bottom box and the top box, and a first sound-absorbing cotton is accommodated in the threading gap.

2. The contactor silent box according to claim 1, characterized in that: A second sound-absorbing cotton is provided on the end face of the open end of the top box and / or the end face of the open end of the bottom box; in the combined state, the second sound-absorbing cotton is sealed between the bottom box and the top box.

3. A contactor silent box according to claim 1, characterized in that: The threading gap is formed between two sets of sidewalls on the same side of the bottom box and the top box.

4. A contactor silent box according to claim 1, characterized in that: The bottom box and the top box have recessed spaces on their open edges; the first sound-absorbing cotton is fixed in the recessed space on the bottom box or the recessed space on the top box; in the combined state, the recessed space on the bottom box and the recessed space on the top box combine to form the threading gap, and the first sound-absorbing cotton is inserted from the recessed space on one side into the recessed space on the other side.

5. A contactor silent box according to claim 1, characterized in that: The outer wall surface of the assembly is provided with perforations; the perforations penetrate the side wall of the bottom box and the first sound-absorbing layer at the corresponding position.

6. A contactor silent box according to claim 1, characterized in that: A locking assembly is provided between the bottom box and the top box; the locking assembly includes a first component and a second component; The first component includes a connector and a connector fitting; of the bottom box and the top box, the connector is provided on one and the connector fitting is provided on the other; the connector fitting is provided with a socket; in the combined state, the connector and the socket are connected and fitted together along a first direction; the first direction is the length direction or the width direction of the bottom box and the top box. The second component includes a first locking plate, a second locking plate, and a fastener; of the bottom box and the top box, the first locking plate is disposed on one and the second locking plate is disposed on the other; in the combined state, the fastener has a locked state in which it passes through the first locking plate and the second locking plate and locks them together, and also has an unlocked state.

7. A contactor silent box according to claim 1, characterized in that: The bottom box is provided with a mounting rail for assembling a contactor; both ends of the mounting rail are fixedly connected to the bottom box, and the mounting rail is away from the first sound-absorbing layer on the bottom surface of the bottom box.

8. A contactor silent box according to claim 1, characterized in that: Both the first and second sound-absorbing layers are made of sound-absorbing cotton.

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