CN103693518B - Elevator control cabinet - Google Patents
Elevator control cabinet Download PDFInfo
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- CN103693518B CN103693518B CN201310665110.5A CN201310665110A CN103693518B CN 103693518 B CN103693518 B CN 103693518B CN 201310665110 A CN201310665110 A CN 201310665110A CN 103693518 B CN103693518 B CN 103693518B
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- accommodation space
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Abstract
The invention provides an elevator control cabinet. The elevator control cabinet comprises a cabinet body (1) with a storage space and an electrical element which is stored in the storage space, wherein the electrical element comprises a variable-frequency device (2), an elevator control loop circuit board (6) and a frequency converter control loop circuit board (7), which are mutually electrically connected with one another, a first separation plate (5) is also arranged in the storage space of the cabinet body (1), the storage space is divided by the first separation plate (5) into a first storage space (111) and a second storage space; the elevator control loop circuit board (6) and the frequency converter control loop circuit board (7) are stored in the first storage space (111) and are respectively and fixedly connected onto the first separation plate (5); the variable-frequency device (2) is stored in the second storage space. The elevator control cabinet has the characteristics of small size and light weight.
Description
Technical field
The present invention relates to a kind of control housing, particularly relate to a kind of construction elevator control housing.
Background technology
In construction elevator field, control housing is normally installed on the sedan-chair of elevator lifting cashier's office in a shop, and control housing can be elevated with the lifting each time of sedan-chair cabinet, and in the process of lifting, motor needs to provide power with the action making elevator complete lifting, and motor produces energy consumption.Therefore, when the sedan-chair cabinet weight of elevator is larger, the energy consumption of generation is larger.Meanwhile, owing to needing in elevator to reserve operational space, so when control housing volume is too large, the operational space reserved just diminishes, and this creates inconvenience to operating personal.
Elevator control cabinet of the prior art, as shown in Figure 1, this control housing comprises cabinet 400, the electric elements be contained in cabinet.The elevator controlling loop 200 that this electric elements comprises the frequency conversion device 500 of band body skin, traditional separation type distributes and main loop of power circuit 300, mutually be electrically connected between this three, but elevator controlling loop 200 is arranged on the different sidewall of cabinet 400 from frequency conversion device 500 and main loop of power circuit 300 respectively, between frequency conversion device 500 and main loop of power circuit 300 side by side and interval arrange.Therefore the physical distance between three is comparatively large, and this just causes the cabinet 400 needing larger volume when installing this three, thus causes the volume of whole elevator control cabinet comparatively large and heavier-weight.
Therefore need to provide a kind of volume little and the elevator control cabinet that quality is light.
Summary of the invention
The object of the invention is to, the comparatively large and defect of heavier-weight for the elevator control cabinet volume existed in prior art, provide the little and elevator control cabinet that quality is light of a kind of volume.
A kind of elevator control cabinet provided by the invention, comprise the cabinet with accommodation space and the electric elements be contained in described accommodation space, described electric elements comprises the frequency conversion device, elevator controlling loop circuit plate and the Frequency Converter Control loop circuit plate that are electrically connected to each other; Also be provided with the first separator of battery plates in the spatial accommodation of described cabinet, described accommodation space is separated into the first accommodation space and the second accommodation space by described first separator of battery plates; Described elevator controlling loop circuit plate and Frequency Converter Control loop circuit plate are contained in described first accommodation space and are also fixedly attached on described first separator of battery plates respectively; Described frequency conversion device is contained in described second accommodation space.
In above-mentioned elevator control cabinet, described frequency conversion device comprises the main loop of power circuit device and main power inverter part that are electrically connected to each other; Also be provided with the second separator of battery plates in described cabinet, described second separator of battery plates is contained in described second accommodation space, and described second accommodation space is separated into the first disposal area and the second disposal area, and described first disposal area and the second disposal area are set up in parallel; Described main loop of power circuit device is contained in described first disposal area, and described main power inverter part is contained in described second disposal area.
In above-mentioned elevator control cabinet, described frequency conversion device also comprises the blower fan group for accelerating heat radiation being arranged on described main power inverter part one end; Described cabinet offers the air outlet corresponding with described blower fan group and ventilation inlet, be formed with the heat dissipation wind channel for dispelling the heat to described electric elements along the air intake of air-flow and air-out path in described second disposal area, the two ends of described heat dissipation wind channel are connected to described ventilation inlet and described air outlet respectively.
In above-mentioned elevator control cabinet, described elevator controlling loop circuit plate comprises pcb board and is installed in relay on described pcb board, rectifier, resistor and the Connector Clip for plugging with external electrical components, and described relay, rectifier, resistor and Connector Clip are electrically connected to each other each other.
In above-mentioned elevator control cabinet, described first separator of battery plates adopts metallic material to make.
In above-mentioned elevator control cabinet, described first separator of battery plates is square stepped plate, comprise the first end difference, connecting portion and the second end difference, described first end difference is vertically connected on a lateral margin of described connecting portion, and described second end difference is vertically connected on another lateral margin of described connecting portion; Described first end difference and described second end difference are parallel to each other and extend in the opposite direction; Described elevator controlling loop circuit plate and Frequency Converter Control loop circuit plate to be all fixedly connected on described first end difference and to be set up in parallel.
In above-mentioned elevator control cabinet, described frequency conversion device also comprises the connection terminal being arranged on the described main power inverter part other end; Described first separator of battery plates offers corresponding with described connection terminal, for stretching out for described connection terminal breach.
In above-mentioned elevator control cabinet, the pair of sidewalls of described cabinet is provided with at least one pair of for supporting the bracing frame of described first separator of battery plates.
In above-mentioned elevator control cabinet, the support portion that each support frame as described above comprises the fixed part that is fixedly connected with the sidewall of described cabinet and extends to form towards the side of described accommodation space along the edge of described fixed part, described support portion is fixedly connected with to support described first separator of battery plates with described first separator of battery plates.
In above-mentioned elevator control cabinet, described frequency conversion device also comprises radiator, described radiator to be contained in described second disposal area and to be positioned on described heat dissipation wind channel, and described radiator and described main power inverter part fit, for described main power inverter part heat radiation.
Implement beneficial effect of the present invention to be: this elevator control cabinet, by changing the inner structure of its cabinet and again being arranged by electric elements and assemble, makes this elevator control cabinet compact conformation, volume reduces, and then reduces manufacture tooling cost.Meanwhile, removed the housing of former frequency converter in the present invention, taking up room of frequency converter has been greatly reduced, thus further reduces the volume of this elevator control cabinet.In addition, in the present invention the elevator controlling logical circuit relay of separation type in prior art, rectifier, resistor, connector are integrated on a pcb board, electrical connecting wires between each discrete electrical components realizes by connecting up on pcb board, this class formation makes the space needed for elevator controlling logical circuit greatly reduce, thus further reduces the volume of this elevator control cabinet.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the perspective view of elevator control cabinet of the prior art;
Fig. 2 is the perspective view of the elevator control cabinet of preferred embodiment provided by the invention;
Fig. 3 is the exploded view in Fig. 2;
Fig. 4 is the structural representation of cabinet in Fig. 3;
Fig. 5 is the structural representation removing cabinet elevator control cabinet behind the door in Fig. 2;
Fig. 6 is the package assembly schematic diagram of elevator control cabinet in Fig. 2 and feet and cabinet protective cover.
Detailed description of the invention
The invention provides a kind of elevator control cabinet of compact.This elevator control cabinet, by changing the inner structure of its cabinet and again being arranged by electric elements and assemble, makes this elevator control cabinet compact conformation, and volume reduces, and then reduces manufacture tooling cost.Meanwhile, removed the housing of former frequency converter in the present invention, taking up room of frequency converter has been greatly reduced, thus further reduces the volume of this elevator control cabinet.In addition, in the present invention the elevator controlling logical circuit relay of separation type in prior art, rectifier, resistor, connector are integrated on a pcb board, electrical connecting wires between each discrete electrical components realizes by connecting up on pcb board, this class formation makes the space needed for elevator controlling logical circuit greatly reduce, thus further reduces the volume of this elevator control cabinet.
With reference to figure 1, elevator control cabinet 100 provided by the invention comprises the cabinet 1 with accommodation space, the cabinet door 11 being contained in the electric elements in this accommodation space and being flexibly connected with cabinet 1.In the present invention, electric elements comprises frequency conversion device 2, elevator controlling loop circuit plate 6 and Frequency Converter Control loop circuit plate 7, is electrically connected to each other between this three.Frequency conversion device 2 comprises main loop of power circuit device 21, main power inverter part 22 and radiator 23.Main loop of power circuit device 21 comprises contactless switch, voltage transformer, circuit breaker etc.Main power inverter part 22 comprises packaging rectifier cell, energy-storage travelling wave tube, inversion element etc.These above-mentioned electric elementss are electric elements conventional in prior art elevator control cabinet field, do not repeat them here.This main loop of power circuit device 21 realizes being electrically connected by electrical lead with main power inverter part 22.Radiator 23 is fitted in the bottom of main power inverter part 22 for being its heat radiation.
With reference to figure 2, cabinet 1 roughly in the square bodily form, comprises left side board 101, right side board 102, top board 103, base plate 104 and backboard 105.This left side board 101 is parallel with right side board 102 and be oppositely arranged.This left side board 101 and right side board 102 connect into the frame body back side and front all opened wide mutually in modes such as welding, be threaded by top board 103 and base plate 104.Establish a backboard 105 to close the back side of this frame body in the back cover of this frame body, the cabinet door 11 that frame body front adopts mode that is hinged or pin joint to be connected on left side board 101 or right side board 102 is closed.The left side board 101 of cabinet 1, right side board 102, top board 103, base plate 104 and backboard 105 enclose this accommodation space with opening (non-label).This opening is used as cabinet mouth.This cabinet mouth is used for entering described accommodation space for described electric elements.Cabinet door 11 is for closing this cabinet mouth.
Be equiped with the first separator of battery plates 5 in the accommodation space of cabinet 1, preferably, in the accommodation space of described cabinet 1, this first separator of battery plates 5 be set near described cabinet mouth place.Accommodation space is divided into the first accommodation space 111 and the second accommodation space (non-label) by this first separator of battery plates 5.Frequency conversion device 2 is contained in the second accommodation space, and elevator controlling loop circuit plate 6 and Frequency Converter Control loop circuit plate 7 are contained in the first accommodation space 111, and respectively to be threaded, the mode such as welding is fixed on the first separator of battery plates 5.First separator of battery plates 5 is roughly square, and area is slightly less than the cross-sectional area of accommodation space.On the left side board 101 that the relative both sides of the first separator of battery plates 5 are fixed on cabinet 1 with welding, the mode such as bonding respectively and right side board 102.In the present embodiment, the left side board 101 of cabinet 1 and right side board 102 are installed with at least one pair of bracing frame 12, for supporting the first separator of battery plates 5, making frequency conversion device 2 in the first separator of battery plates 5 and the second accommodation space at intervals, being convenient to the heat radiation of frequency conversion device 2.The support portion (non-label) that each support frame as described above 12 comprises the fixed part (non-label) that is fixedly connected with the left side board 101 of described cabinet 1 or right side board 102 and extends to form towards the side of described accommodation space along the edge of described fixed part, described support portion is fixedly connected with to support described first separator of battery plates 5 with described first separator of battery plates 5.
First separator of battery plates 5 is stepped plate, comprises the first end difference 501, connecting portion 502 and the second end difference 503.First end difference 501 is vertically connected on a lateral margin of connecting portion 502, and the second end difference 503 is vertically connected on another relative lateral margin of connecting portion 502.First end difference 501 and the second end difference 503 are parallel to each other and extend in the opposite direction.In the present embodiment, this first separator of battery plates 5 is formed in one structure, to reduce the step of processing, saves production cost.
In the present embodiment, elevator controlling loop circuit plate 6, Frequency Converter Control loop circuit plate 7 are all fixedly connected on the first end difference 501 place, and are set up in parallel.This first separator of battery plates 5 offers breach 504 in the position corresponding with the connection terminal 221 of main power inverter part 22, and this breach 504 is for stretching out to realize the electrical connection with other electrical parts for connection terminal 221.Second end difference 503 of this first separator of battery plates 5 is also fixedly connected with band-type brake power interface terminal 13, the outside of this band-type brake power interface terminal 13 is also equiped with mark cover 14, this mark cover 14 is printed with the identifier corresponding with each port function in band-type brake power interface terminal 13.The bottom of the first separator of battery plates 5 is also connected with inverted L shape flap 505, and one end and the bottom being connected to the first separator of battery plates 5 of this flap 505, the other end is connected on base plate 104.This second end difference 503 is also equiped with band-type brake power supply section breaker 14, this band-type brake power supply section breaker 14 is positioned at the side of band-type brake power interface terminal 13, and with its electrical connection.
This first separator of battery plates 5 adopts metallic material to make.This is because forceful electric power loop in the frequency conversion device 2 adopting metallic material can effectively isolate in the second accommodation space is to the electromagnetic interference of the elevator controlling loop circuit plate 6 in the first accommodation space 111 and the control loop in Frequency Converter Control loop circuit plate 7.Meanwhile, also because the high strength of metallic material can be played a supporting role to these control circuit boards.In addition, also to a certain extent, directly touch forceful electric power loop after preventing user to open cabinet door 11 in use, thus avoid the injury to user.
In the present embodiment, elevator controlling loop circuit plate 6 comprises pcb board (non-label) and is arranged on relay (non-label) on this pcb board, rectifier (non-label), resistor (non-label), connector (non-label) for plugging with external electrical components.This relay, rectifier, resistor, connector are fixed on pcb board in a welding manner, the electrical connection each other of this relay, rectifier, resistor, connector realizes by connecting up on this pcb board, and concrete arrangement can be determined according to circuit layout particularly.Such as, this relay, rectifier, resistor are set in the central area of this pcb board, at the fringe region of this pcb board, connector are set so that be connected with other electrical part.In the present embodiment, the elevator controlling logical circuit relay of separation type in prior art, rectifier, resistor, connector are integrated on a pcb board, electrical connection between each discrete electrical components realizes by connecting up on pcb board, this class formation makes the space needed for elevator controlling logical circuit greatly reduce, thus further reduces the volume of this elevator control cabinet 100.In order to protect this elevator controlling loop circuit plate 6, then on this elevator controlling loop circuit plate 6, install circuit card protective cover 9.This circuit card protective cover 9 is connected on pcb board in the mode be threaded.
This elevator control cabinet 100 also comprises the second separator of battery plates 3.Second separator of battery plates 3 is the stripe board of band bending edges, and this second separator of battery plates 3 is contained in the second accommodation space, and vertically arranges.The two ends of this second separator of battery plates 3 are fixedly connected with base plate 104 with top board 103 respectively, the second accommodation space to be separated into the first disposal area 113 and the second disposal area 114.This first disposal area 113 and the second disposal area 114 are set up in parallel.This first disposal area 113 is for holding main loop of power circuit device 21, and this second disposal area 114 is for holding this main power inverter part 22.This first separator of battery plates 3 offers recess 115, and this recess 115 is for passing for the electrical lead be connected between this main loop of power circuit device 21 and main power inverter part 22.This second separator of battery plates 3 is provided with the first fixed mount 31 for fixing this main power inverter part 22; In the present embodiment, this first fixed mount 31 is the part bending edges on the second separator of battery plates 3, and offers on this bending edges for the tapped bore be threaded (non-label).Position relative with this first fixed mount 31 on right side board 102 is provided with the second fixed mount 105, and in the present embodiment, the second fixed mount 105 can be the stripe board of band bending edges, wherein this bending edges offers the tapped bore (non-label) that tapping connects.The both sides of this main power inverter part 22 are separately fixed on this first fixed mount 31 and the second fixed mount 105 by screw.This radiator 23 is contained in this second disposal area 114, and its top and this main power inverter part 22 fit to realize heat transfer, dispel the heat to main power inverter part 22.The top of this main power inverter part 22 is provided with blower fan group 222, this blower fan group 222 for accelerate dispel the heat time air flowing thus accelerate radiating rate.The top board 103 and base plate 104 of the cabinet 1 corresponding with this blower fan group 222 offer air outlet 107 and ventilation inlet 108 respectively.Heat dissipation wind channel is formed with along the air intake of air-flow and air-out path, for dispelling the heat to being contained in electric elements in cabinet 1 in the second disposal area 114.The two ends of heat dissipation wind channel are connected on air outlet 107 and ventilation inlet 108 respectively.The bottom of this main loop of power circuit device 21 is provided with voltage transformer 211, and this voltage transformer 211 is provided with multiple interface 212.Offer multiple extending port 109 at base plate 104 with on this interface 212 accordingly position, this extending port 109 is for stretching out to realize being connected with other electrical parts for interface 212 when installing.This class formation, makes each electric elements be contained in the second accommodation space arrange compact, decreases the volume needed for electric elements installation, so just can greatly reduce the volume of elevator control cabinet 100, alleviate its weight, be convenient to its processing, install and use.
In the present embodiment, this cabinet door 11 is also provided with operate tablet 23, this operate tablet 23 is electrically connected with Frequency Converter Control loop circuit plate 7, can realize the control to Frequency Converter Control loop by operate tablet 23.This cabinet door 11 is also provided with overload alarm 24.This overload alarm 24 is positioned at the side of operate tablet 23, is electrically connected with elevator controlling loop circuit plate 6, for sending overload warning prompting according to the instruction of the control loop in elevator controlling loop circuit plate 6.This cabinet door 11 is also provided with lock body 25, and this lock body 25 for cabinet door 11 is locked in cabinet 1, thus realizes the sealing to cabinet 1.Lock body 25 can be lock conventional in prior art, does not repeat them here.
The electric elements mentioned in the present invention is the electric elements of elevator control cabinet 100 in prior art, and only have the change of physical connection structure each other and there is no the change on circuit, therefore do not repeat them here each electric elements feature and between circuit connecting relation.
Elevator control cabinet 100 provided by the invention can be different according to the occasion of installing, and increase other auxiliary parts installed.Such as, elevator control cabinet 100 is made common floor type when installing control housing, can install a pair feet 20 in the bottom of elevator control cabinet 100, this feet 20 can be that bending plate, square tube etc. can the structures of horizontal positioned.When elevator control cabinet 100 is outdoor use, on its air outlet 107, cabinet protective cover 21 can be established at lid.This cabinet protective cover 21 is a cubic type housing identical with the cross sectional dimensions of cabinet 10, and at least one outside face of housing offers multiple blinds fenestra, thus realizes the effect of waterproof.This elevator control cabinet 100 can directly hang on wall, also can be embedded in body of wall or be placed in a plane.
In sum, the elevator control cabinet 100 provided in the present invention is a kind of lightweight, elevator control cabinets 100 that compact conformation, volume are little.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (10)
1. an elevator control cabinet, comprise the cabinet (1) with accommodation space and the electric elements be contained in described accommodation space, it is characterized in that, described electric elements comprises the frequency conversion device (2), elevator controlling loop circuit plate (6) and the Frequency Converter Control loop circuit plate (7) that are electrically connected to each other; The first separator of battery plates (5) is provided with in the accommodation space of described cabinet (1), described accommodation space is separated into the first accommodation space (111) and the second accommodation space by described first separator of battery plates (5), and described first separator of battery plates (5) is square stepped plate, comprise the first end difference (501), connecting portion (502) and the second end difference (503); Described elevator controlling loop circuit plate (6) and Frequency Converter Control loop circuit plate (7) are all contained in described first accommodation space (111) and are also fixedly attached to respectively on described first end difference (501) and are set up in parallel; Described frequency conversion device (2) is contained in described second accommodation space.
2. elevator control cabinet according to claim 1, is characterized in that, described frequency conversion device (2) comprises the main loop of power circuit device (21) and main power inverter part (22) that are electrically connected to each other; The second separator of battery plates (3) is also provided with in described cabinet (1), described second separator of battery plates (3) to be contained in described second accommodation space and described second accommodation space is separated into the first disposal area (113) and the second disposal area (114), and described first disposal area (113) and the second disposal area (114) are set up in parallel; Described main loop of power circuit device (21) is contained in described first disposal area (113), and described main power inverter part (22) is contained in described second disposal area (114).
3. elevator control cabinet according to claim 2, is characterized in that, described frequency conversion device (2) also comprises the blower fan group (222) for accelerating heat radiation being arranged on described main power inverter part (22) one end; Described cabinet (1) offers the air outlet (107) corresponding with described blower fan group (222) and ventilation inlet (108), be formed with the heat dissipation wind channel for dispelling the heat to described electric elements along the air intake of air-flow and air-out path in described second disposal area (114), the two ends of described heat dissipation wind channel are connected to described ventilation inlet (108) and described air outlet (107) respectively.
4. elevator control cabinet according to claim 3, it is characterized in that, described elevator controlling loop circuit plate (6) comprises pcb board and is installed in relay on described pcb board, rectifier, resistor and the Connector Clip for plugging with external electrical components; Described relay, rectifier, resistor and Connector Clip are electrically connected to each other each other.
5. elevator control cabinet according to claim 4, is characterized in that, described first separator of battery plates (5) adopts metallic material to make.
6. elevator control cabinet according to claim 5, it is characterized in that, described first end difference (501) is vertically connected on a lateral margin of described connecting portion (502), and described second end difference (503) is vertically connected on another lateral margin of described connecting portion (503); Described first end difference (501) and described second end difference (502) are parallel to each other and extend in the opposite direction.
7. elevator control cabinet according to claim 6, is characterized in that, described frequency conversion device (2) also comprises the connection terminal (221) being arranged on described main power inverter part (22) other end; Described first separator of battery plates (5) offers corresponding with described connection terminal (221), for stretching out for described connection terminal (221) breach (504).
8. elevator control cabinet according to claim 7, is characterized in that, the pair of sidewalls of described cabinet (1) is provided with at least one pair of for supporting the bracing frame (12) of described first separator of battery plates (5).
9. elevator control cabinet according to claim 8, it is characterized in that, the support portion that each support frame as described above (12) comprises the fixed part that is fixedly connected with the sidewall of described cabinet (1) and extends to form towards the side of described accommodation space along the edge of described fixed part, described support portion is fixedly connected with to support described first separator of battery plates (5) with described first separator of battery plates (5).
10. elevator control cabinet according to claim 9, it is characterized in that, described frequency conversion device (2) also comprises radiator (23), described radiator (23) to be contained in described second disposal area (114) and to be positioned on described heat dissipation wind channel, described radiator (23) and described main power inverter part (22) fit, for dispelling the heat to described main power inverter part (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310665110.5A CN103693518B (en) | 2013-12-10 | 2013-12-10 | Elevator control cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310665110.5A CN103693518B (en) | 2013-12-10 | 2013-12-10 | Elevator control cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103693518A CN103693518A (en) | 2014-04-02 |
| CN103693518B true CN103693518B (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310665110.5A Active CN103693518B (en) | 2013-12-10 | 2013-12-10 | Elevator control cabinet |
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| CN (1) | CN103693518B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267632B (en) * | 2014-10-21 | 2015-05-13 | 国家电网公司 | Circuit board control cabinet with stepping motor adopted for pivoting driving |
| CN104816994B (en) * | 2015-05-08 | 2017-06-09 | 吴江骏达电梯部件有限公司 | A kind of elevator PLC device protects shell |
| CN110048921B (en) * | 2019-04-17 | 2021-06-04 | 钛克菲斯智能科技（深圳）有限公司 | Household intelligent lock and Internet of things control system |
| TR201908844A2 (en) * | 2019-06-14 | 2020-12-21 | Arkel Elektrik Elektronik Sanayi Ve Ticaret Anonim Sirketi | MONOBLOCK ELEVATOR CONTROL UNIT |
| CN111747249A (en) * | 2020-06-23 | 2020-10-09 | 巨龙电梯有限公司 | Electric control system of 220V-to-380V lifting platform |
| CN116331970A (en) * | 2022-12-05 | 2023-06-27 | 菱王电梯有限公司 | Control cabinet and elevator equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6293697B1 (en) * | 2000-01-18 | 2001-09-25 | Mamac Systems, Inc. | Housing for HVAC control unit |
| CN201119146Y (en) * | 2007-11-13 | 2008-09-17 | 西子奥的斯电梯有限公司 | An elevator control case |
| CN202518894U (en) * | 2012-03-20 | 2012-11-07 | 厦门中兰通电梯工业有限责任公司 | Novel small machine-room control cabinet |
| CN202575594U (en) * | 2012-04-28 | 2012-12-05 | 苏州汇川技术有限公司 | Small elevator control cabinet |
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2013
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