Door motor and elevator door system

Abstract

The utility model belongs to the technical field of elevator equipment, and discloses a door motor and an elevator door system, and the door motor comprises a housing, a motor main body, a door motor controller and a protection assembly. A closed containing cavity is formed in the machine shell, the motor body and the door machine controller are both arranged in the containing cavity, and the motor body is electrically connected with the door machine controller. The portal crane controller is further connected with a cable. A through hole is formed in the machine shell, the protection assembly comprises a cover plate and a protection sleeve, the cover plate is connected to the outer side of the machine shell through a fastener, the protection sleeve is clamped between the cover plate and the machine shell and seals the through hole, and the protection sleeve has elastic performance; the cable sequentially penetrates through the through hole, the protective sleeve and the cover plate so as to extend out of the machine shell, and the cable is tightly matched with the protective sleeve. The door motor has the characteristics of low failure rate, high safety and high reliability, and can effectively prevent foreign matters from entering from a gap between the door motor and the cable.

Description

Technical Field

[0001] This utility model belongs to the field of elevator equipment technology, specifically relating to a door motor and an elevator door system. Background Technology

[0002] Door motors are the core driving components of elevator door systems, and their safety and reliability directly affect the safety and reliability of the elevator itself. As market competition intensifies, there are increasing demands for higher safety and reliability in door motors, while simultaneously requiring them to be lighter, thinner, and less expensive.

[0003] like Figure 1 and Figure 2 As shown, the existing door motor housing is usually a disc-shaped structure. The cable passes through a cable protection sleeve with through holes inside the door motor, and the protection sleeve is embedded in the groove of the housing. Since the contact surface of the protection sleeve is flat, there is a gap between the two. Dust and water can easily enter the door motor through the gap. In addition, the protection sleeve is made of rubber and is in direct contact with the outside. It is easily damaged by the pulling of the cable or other external factors, thus affecting the dustproof and waterproof performance of the door motor and resulting in a high failure rate. Utility Model Content

[0004] The purpose of this invention is to provide a door motor that can effectively prevent foreign objects from entering the door motor through the gap between the door motor and the cable.

[0005] The following technical solutions are used to achieve the above objectives.

[0006] The first aspect of this utility model provides a door motor, which includes a housing, a motor body, a door controller, and protective components;

[0007] The housing has a closed receiving cavity, and the motor body and the door controller are both disposed in the receiving cavity. The motor body and the door controller are electrically connected.

[0008] The door operator controller is also connected to a cable; the housing has a through hole; the protective assembly includes a cover plate and a protective sleeve; the cover plate is connected to the outside of the housing by fasteners; the protective sleeve is sandwiched between the cover plate and the housing and closes the through hole; the protective sleeve has elastic properties; the cable passes through the through hole, the protective sleeve and the cover plate in sequence to extend outward to the outside of the housing, and the cable is tightly fitted with the protective sleeve.

[0009] In some embodiments, the protective sleeve includes a fixing plate and a protrusion disposed on the side of the fixing plate near the housing. The fixing plate and the protrusion form a stepped structure. The protrusion extends into the through hole and is in close contact with the hole wall of the through hole. The fixing plate is tightly abutted against the outer side of the housing.

[0010] In some embodiments, the cover plate includes a first plate and a second plate, the second plate being perpendicularly connected to the first plate, the first plate being tightly connected to the protective sleeve to the housing by fasteners, and the second plate shielding the cable extending from the first plate.

[0011] In some embodiments, the fasteners are sequentially inserted through the first plate and the protective sleeve and then fixed to the housing. Multiple fasteners are provided, and each fastener is distributed around the first plate.

[0012] In some embodiments, the housing is a square housing, and the through hole is formed on the side plane of the housing near its top.

[0013] In some embodiments, the protective sleeve is a rubber sleeve.

[0014] In some embodiments, the door operator controller integrates an encoder; the housing includes a shell, an inner cover, and an end cover; the end cover is sealed to the shell to form a closed receiving cavity, the inner cover is connected to the inner wall of the shell and disposed within the receiving cavity, and the door operator controller is disposed on the inner cover.

[0015] In some embodiments, the inner cover has a receiving hole at its center, and a stepped groove is formed on the wall of the receiving hole; the motor body has a bearing, which is received in the stepped groove and supported by the inner cover; the door controller is located on the side of the inner cover away from the motor body.

[0016] In some embodiments, the motor body has a rotor, the end of which is externally placed on the housing and connected to a synchronous pulley. A sealing ring is provided between the rotor and the synchronous pulley, the sealing ring is interference-fitted with the rotor, and the end face of the sealing ring abuts against the housing.

[0017] The second aspect of this utility model provides an elevator door system, which includes a car, a car door, and a door motor as described above. The car door is closable on the car, and the door motor is used to control the opening and closing state of the car door.

[0018] The technical solution provided by this utility model has the following advantages and effects:

[0019] This door motor integrates the motor body and door controller into a single housing, reducing the risk of malfunctions caused by signal interference during signal transmission from the door controller to the motor body. This effectively lowers the failure rate and improves the safety and reliability of the door motor. Furthermore, a protective component is integrated at the cable exit point of the door controller within the housing. This protective component features an elastic sleeve that is tightly pressed against the outer side of the housing by a cover plate, ensuring a seamless fit between the sleeve and the housing surface. This also prevents gaps between the sleeve and the housing / cable, effectively preventing foreign objects from entering the door motor through these gaps. The cover plate further protects the sleeve from damage caused by external forces pulling the cable or other external factors, thus extending its lifespan and enhancing its protective effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an existing door motor mentioned in the background art of this utility model;

[0021] Figure 2 yes Figure 1 An enlarged schematic diagram of the structure at point A of the door motor, with the arrow pointing in the direction of foreign object entry;

[0022] Figure 3 This is a longitudinal cross-sectional structural diagram of the door motor according to an embodiment of the present utility model;

[0023] Figure 4 This is an exploded view of the door motor according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the door motor's structure regarding the cooperation between the protective components and the housing, according to an embodiment of this utility model.

[0025] Figure 6 This is a schematic diagram of the door motor's structure with respect to the motor body and the sealing ring in an embodiment of this utility model. The arrow points to a schematic diagram showing a foreign object entering the sealing ring and being blocked from entering further.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Door motor;

[0028] 1. Housing; 11. Shell; 111. Through hole; 12. Inner cover; 121. Receiving hole; 13. End cover; 2. Door controller; 21. Cable; 3. Motor body; 31. Bearing; 32. Rotor; 33. Synchronous pulley; 34. Sealing ring; 4. Protective components; 41. Cover plate; 411. First plate; 412. Second plate; 42. Protective sleeve; 421. Fixing plate; 422. Protrusion; 43. Fastener. Detailed Implementation

[0029] To facilitate understanding of this utility model, the specific embodiments of this utility model will be described in more detail below with reference to the accompanying drawings.

[0030] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0031] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0032] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.

[0033] This utility model embodiment provides a door motor 100, such as Figures 3 to 6 As shown, the door motor 100 includes a housing 1, a door controller 2, a motor body 3, and a protective component 4.

[0034] The housing 1 has a closed receiving cavity, in which the door controller 2 and the motor body 3 are both housed. The motor body 3 is electrically connected to the door controller 2. The door controller 2 is also connected to a cable 21, which mainly transmits electrical energy. The door controller 2 primarily controls the start, stop, acceleration, and deceleration of the motor body 3 according to a coded program. In this embodiment, by integrating the motor body 3 and the door controller 2 into the housing 1, the problem of door motor 100 control failure caused by signal interference during signal transmission from the door controller 2 to the motor body 3 can be greatly reduced, effectively lowering the failure rate and improving the safety and reliability of the door motor 100.

[0035] like Figure 4As shown, the housing 1 has a through hole 111. The protective component 4 includes a cover plate 41 and a protective sleeve 42. The cover plate 41 is connected to the outside of the housing 1 by fasteners 43. The protective sleeve 42 is sandwiched between the cover plate 41 and the housing 1 and closes the through hole 111. The protective sleeve 42 has elastic properties. The cable 21 passes through the through hole 111, the protective sleeve 42 and the cover plate 41 in sequence and extends to the outside of the housing 1. The cable 21 is tightly fitted with the protective sleeve 42. By setting up the protective component 4, the protective sleeve 42 of the protective component 4 has elastic properties and is tightly pressed against the outside of the housing 1 by the cover plate 41, so that the protective sleeve 42 and the surface of the housing 1 are tightly fitted without gaps, effectively preventing foreign objects from entering the door motor 100 through the gaps between the two. The cable 21 is also tightly fitted with the passage of the protective sleeve 42 without gaps, thereby preventing foreign objects such as water or dust from entering through the gap between the protective sleeve 42 and the cable 21. Combined with the cover plate 41 for protecting the protective sleeve 42, it effectively prevents the protective sleeve 42 from being damaged by external force pulling on the cable 21 or other external factors, thereby improving the service life of the protective sleeve 42.

[0036] In summary, by integrating the motor body 3 and the door controller 2 into a single housing 1, the door motor 100 reduces the risk of control failures caused by signal interference during signal transmission from the door controller 2 to the motor body 3, effectively lowering the failure rate and improving the safety and reliability of the door motor 100. Furthermore, by incorporating a protective component 4 at the cable 21 exit point of the door controller 2 within the housing 1, and by ensuring the protective sleeve 42 of this component 4 has elastic properties and is tightly pressed against the outside of the housing 1 by a cover plate 41, the door motor 100 achieves this. This allows the protective sleeve 42 to fit tightly against the surface of the housing 1 without gaps, and the cable 21 to fit tightly against the protective sleeve 42 without gaps, improving the sealing performance and effectively preventing foreign objects such as water or dust from entering the door motor 100 through gaps between the protective sleeve 42 and the housing 1 and the cable 21. The cover plate 41 is used to protect the protective sleeve 42, effectively preventing the protective sleeve 42 from being damaged by external force pulling on the cable 21 or other external factors, thereby increasing the service life of the protective sleeve 42 and improving the protective effect.

[0037] In some embodiments, such as Figure 5As shown, the protective sleeve 42 includes a fixing plate 421 and a protrusion 422 disposed on the side of the fixing plate 421 near the housing 1. The fixing plate 421 and the protrusion 422 form a stepped structure. The protrusion 422 extends into the through hole 111 and is in close contact with the wall of the through hole 111, and the fixing plate 421 is tightly abutted against the outer side of the housing 1. It can be understood that by setting the protective sleeve 42 as a stepped sleeve structure of the fixing plate 421 and the protrusion 422, the stepped surface of the protective sleeve 42 abuts against the outer side of the housing 1 corresponding to the through hole 111, thereby increasing the contact area between the protective sleeve 42 and the housing 1 and further improving the sealing effect.

[0038] In some embodiments, such as Figure 5 As shown, the cover plate 41 includes a first plate 411 and a second plate 412. The second plate 412 is perpendicularly connected to the first plate 411. The first plate 411 tightly connects the protective sleeve 42 to the housing 1 via fasteners 43. The second plate 412 shields the cable 21 extending from the first plate 411. The fasteners 43 can be screws or other components that can fix the cover plate 41 and the protective sleeve 42 to the housing; no particular limitation is made here. Specifically, the fasteners 43 are sequentially inserted through the cover plate 41 and the protective sleeve 42 and then fixed to the housing 1. Multiple fasteners 43 are provided, distributed around the cover plate 41 to securely fix the cover plate 41 and the protective sleeve 42 to the housing 1. The sequential insertion of the fasteners 43 also securely fixes the protective sleeve 42 to the housing 1, effectively preventing displacement of the protective sleeve 42 relative to the housing 1. Furthermore, by setting the first plate 411 and the second plate 412 to be vertically connected to form an inverted L-shaped structure, the structural strength of the cover plate 41 can be improved. On the other hand, since the cable 21 extends outward through the housing 1, the protective sleeve 42 and the cover plate 41 in sequence, the second plate 412 can shield the cable 21 extending out of the first plate 411, thereby improving the waterproof effect at the cable 21 outlet.

[0039] In some embodiments, such as Figure 4 As shown, the housing 1 is a square shell, and the through hole 111 is opened on the side plane of the housing 1 near its top. The protective sleeve 42 and the housing 1 have a smooth flat surface structure, which allows the protective sleeve 42 and the housing 1 to fit more tightly. The regular square shell structure also facilitates the assembly of the protective sleeve 42 and the cover plate 41.

[0040] In some embodiments, the protective sleeve 42 is a rubber sleeve. The rubber sleeve has good elasticity and can fit tightly against the surface of the housing 1 under the compression of the cover 41, and has good wear resistance.

[0041] In some embodiments, the cover plate 41 can be a metal cover plate. Of course, in other embodiments, the cover plate 41 can also be made of other materials with better structural strength to achieve better structural strength and form a better protective effect on the protective sleeve 42.

[0042] In some embodiments, such as Figure 3 and Figure 4 As shown, the door controller 2 integrates an encoder; the housing 1 includes a housing 11, an inner cover 12, and an end cover 13; the end cover 13 is sealed to the housing 11 to form a closed receiving cavity, the inner cover 12 is connected to the inner wall of the housing 11 and disposed in the receiving cavity, and the door controller 2 is disposed on the inner cover 12. It should be noted that the motor body 3 is a conventional permanent magnet motor. Since the encoder transmits the rotation signal of the motor body 3, magnetic particles are fixed on the rotor 32 of the motor body 3. These magnetic particles are magnetic. When the motor body 3 rotates, the change in the magnetic field of the magnetic particles can be captured by the encoder, thereby transmitting the rotation position information of the motor. Therefore, the distance control between the encoder and the magnetic particles on the rotor 32 of the motor body 3 is relatively strict. Otherwise, the encoder's control of the motor body 3 will be unstable. If the door controller 2 with the integrated encoder is directly fixed inside the end cover 13, the distance between the encoder and the magnetic particles will be difficult to control. After the machining and installation tolerances are superimposed, the distance control will not meet the requirements. Therefore, in this embodiment, by further setting the inner cover 12 on the housing 11, the door controller 2 is fixed by the inner cover 12, which can effectively control the distance between the encoder and the magnetic particles. Since the housing 11 only needs to be sealed with the end cover 13, and the door controller 2 is set in a closed receiving cavity, the design avoids the need for separate protection of the door controller 2, which greatly increases the convenience of assembly and the reliability of protection.

[0043] Furthermore, the inner cover 12 can be a bearing end cover for the motor body 3, allowing the inner cover 12 to simultaneously fix the door controller 2 and the bearing 31 of the motor body 3, further improving the structural integration. Specifically, the inner cover 12 has a receiving hole 121 at its center, and a stepped groove is formed on the wall of the receiving hole 121; the motor body 3 has a bearing 31, which is received in the stepped groove and supported by the inner cover 12; the door controller 2 is located on the side of the inner cover 12 away from the motor body 3.

[0044] In some embodiments, such as Figure 6As shown, the motor body 3 has a rotor 32. The end of the rotor 32 is externally placed on the housing 1 and connected to a synchronous pulley 33. A sealing ring 34 is provided between the rotor 32 and the synchronous pulley 33. The sealing ring 34 is interference-fitted with the rotor 32, and the end face of the sealing ring 34 abuts against the housing 11. Understandably, the rotor 32 of the motor body 3 rotates under electromagnetic force, thereby transmitting torque. The synchronous pulley 33 rotates with the rotor 32. The housing 1, as a non-rotating component, has a gap with the rotor 32. Therefore, dust and water can easily enter the door motor 100 through this gap. Therefore, by providing the sealing ring 34, and ensuring an interference fit between the sealing ring 34 and the rotor 32 for synchronous rotation, and by controlling dimensional tolerances, after the synchronous pulley 33 is pressed into place, a certain surface pressure is applied to the sealing ring 34, causing the lip of the sealing ring 34 to fit against the housing 1, thereby effectively preventing foreign objects from entering the door motor 100.

[0045] As described above, the sealing connection between the housing 11 and the end cap 13, for example, is formed by screws, and the protective component 4 is used to seal the outlet of the cable 21. The sealing ring 34 is used to seal the protruding position of the rotor 32 of the motor body 3. The combination of these three elements can make the sealing effect of the door motor 100 more excellent and effectively prevent foreign objects from entering the interior of the door motor 100.

[0046] This utility model embodiment also provides an elevator door system, which includes a car, a car door, and a door motor 100 as described above. The car door is closable on the car, and the door motor 100 is used to control the opening and closing state of the car door.

[0047] In this elevator door system, the door motor 100 is integrated into a single housing 1, specifically by combining the motor body 3 and the door controller 2. Compared to the existing technology where the door motor 100 (including the motor body 3) is fixed to the upper sill of the car door, and the door controller 2 is fixed to the electrical box at the top of the car door, this design reduces the risk of door motor 100 control failures due to signal interference during signal transmission from the door controller 2 to the motor body 3. This effectively lowers the failure rate and improves the safety and reliability of the door motor 100. Furthermore, a protective component 4 is installed at the cable outlet 21 of the door controller 2 within the housing 1. The protective sleeve 42 of the protective component 4 has elastic properties and is tightly pressed against the outside of the housing 1 by the cover plate 41. This allows the protective sleeve 42 to fit tightly against the surface of the housing 1 without gaps, and the cable 21 to fit tightly against the protective sleeve 42 without gaps. This effectively prevents foreign objects from entering the door motor 100 through gaps between the protective sleeve 42, the housing 1, and the cable 21. The cover plate 41 is used to protect the protective sleeve 42, effectively preventing the protective sleeve 42 from being damaged by external force pulling on the cable 21 or other external factors, thereby increasing the service life of the protective sleeve 42 and improving the protective effect.

[0048] The above embodiments are not an exhaustive list based on the present invention, and there may be other embodiments not listed. Any substitutions and improvements made without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. A door motor, characterized in that, The door motor includes a housing, a motor body, a door controller, and protective components; The housing has a closed receiving cavity, and the motor body and the door controller are both disposed in the receiving cavity. The motor body and the door controller are electrically connected. The door operator controller is also connected to a cable; the housing has a through hole; the protective assembly includes a cover plate and a protective sleeve; the cover plate is connected to the outside of the housing by fasteners; the protective sleeve is sandwiched between the cover plate and the housing and closes the through hole; the protective sleeve has elastic properties; the cable passes through the through hole, the protective sleeve and the cover plate in sequence to extend outward to the outside of the housing, and the cable is tightly fitted with the protective sleeve.

2. The door motor as described in claim 1, characterized in that, The protective sleeve includes a fixing plate and a protrusion disposed on the side of the fixing plate near the housing. The fixing plate and the protrusion form a stepped structure. The protrusion extends into the through hole and is in close contact with the hole wall of the through hole. The fixing plate is tightly abutted against the outside of the housing.

3. The door motor as described in claim 1, characterized in that, The cover plate includes a first plate and a second plate. The second plate is perpendicularly connected to the first plate. The first plate tightly connects the protective sleeve to the housing by fasteners. The second plate shields the cable extending from the first plate.

4. The door motor as described in claim 3, characterized in that, The fasteners are sequentially inserted through the first plate and the protective sleeve and then fixed to the housing. Multiple fasteners are provided, and each fastener is distributed around the first plate.

5. The door motor as described in claim 1, characterized in that, The housing is a square housing, and the through hole is opened on the side plane of the housing near its top.

6. The door motor as described in claim 1, characterized in that, The protective sleeve is a rubber sleeve.

7. The door motor as described in any one of claims 1-6, characterized in that, The door operator controller integrates an encoder; the housing includes a shell, an inner cover, and an end cover; the end cover is sealed to the shell to form a closed receiving cavity, the inner cover is connected to the inner wall of the shell and disposed within the receiving cavity, and the door operator controller is disposed on the inner cover.

8. The door motor as described in claim 7, characterized in that, The inner cover has a receiving hole at its center, and a stepped groove is formed on the wall of the receiving hole; the motor body has a bearing, which is housed in the stepped groove and supported by the inner cover; the door controller is located on the side of the inner cover away from the motor body.

9. The door motor as described in claim 7, characterized in that, The motor body has a rotor, the end of which is placed outside the housing and connected to a synchronous pulley. A sealing ring is provided between the rotor and the synchronous pulley. The sealing ring is interference-fitted with the rotor, and the end face of the sealing ring abuts against the housing.

10. An elevator door system, characterized in that, The elevator door system includes a car, a car door, and a door motor as described in any one of claims 1-9, wherein the car door is closably mounted on the car, and the door motor is used to control the opening and closing state of the car door.

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