Auxiliary device for elevator door lock inspection

Abstract

The utility model relates to an auxiliary device for elevator door lock inspection, which comprises an insulating handle, at least three electrically connected contacts and a fastening component. The at least three electrically connected contacts include a planar contact, a stylus contact and a stepped contact. The fastening component detachably connects any one of the at least three electrically connected contacts with the handle. In the state of opening the landing door or the car door, the electrical connection of the auxiliary device can be verified by connecting the main door lock contact with the electrically connected contacts. The insulating handle can be used to quickly detect whether the engagement depth of the main door lock meets the requirements.

Description

Technical Field

[0001] This disclosure relates to the field of elevator maintenance technology, and more specifically, to an auxiliary device for inspecting elevator door locks. Background Technology

[0002] The main door lock (hereinafter referred to as the main door lock) and the electrical device (hereinafter referred to as the auxiliary door lock) that verifies whether the landing door or car door is locked are important safety devices for elevators. The main door lock requires that the locking element be engaged at least 7mm before the car can start; that is, the main door lock is only electrically connected when the engagement depth reaches 7mm. Only after the main and auxiliary door locks are electrically connected (i.e., after the landing and car doors are closed) can the elevator operate normally, preventing people from being sheared by the moving car. Because the door locks operate frequently, with each door opening and closing accompanied by the action of both the main and auxiliary door locks, their failure rate is relatively high. Therefore, for elevator safety, it is necessary to inspect the main and auxiliary door locks at each floor.

[0003] The inspection of the main door lock and the secondary door lock now mainly includes:

[0004] 1) Check the engagement depth of the main door lock locking element. Use a ruler to measure the engagement depth of the locking element when the door lock is just electrically connected. This value should not be less than 7mm.

[0005] 2) Electrical checks of the main door lock primarily verify whether the elevator operates when the main door lock is electrically disconnected. Typically, personnel operate the elevator from the car top in inspection mode, opening the main door lock to disconnect its electrical connection; the elevator should then stop operating.

[0006] 3) Electrical checks of the secondary door lock primarily verify whether the elevator operates when the secondary door lock is electrically disconnected. The main and secondary door locks are electrically connected in series. Multiple landing doors or car doors are mechanically connected directly or indirectly. Therefore, opening the main door lock and pulling open the landing or car door to disconnect the secondary door lock's electrical connection will inevitably disconnect the main door lock's electrical connection as well. It's impossible to verify the secondary door lock's electrical continuity independently like verifying the main door lock. The current practice is to insert insulating material between the secondary door lock contacts and the conductive elements to isolate the electrical connection. Then, closing the landing or car door closes the main door lock, maintaining electrical continuity, and checking whether the elevator operates at this time.

[0007] To isolate electrical connections, insulating material is inserted between the secondary door lock contacts and the conductive element. Some use small rubber sleeves as this insulating material, but these sleeves easily get stuck in the protective housing of the secondary door lock when the landing door is opened after testing, making them difficult to remove. Others use insulating tape, but this is easily punctured. With a large number of secondary door locks inspected daily (generally over 100), using insulating material makes the process quite tedious. Furthermore, secondary door locks come in various types; some have a closed structure, making it impossible to insert insulating material between the contacts and conductive element. Verification is usually done by removing the secondary door lock from its original position, but due to the large number of locks, the removal and repositioning process takes a long time to inspect a single elevator. Checking the engagement depth of the locking element requires measuring with a ruler each time, which is particularly tiring for inspection personnel, especially when checking the engagement depth of over 100 locks daily. Utility Model Content

[0008] This utility model provides an auxiliary device for elevator door lock inspection. When the landing door or car door is open, the device can verify the electrical connectivity of the auxiliary door lock by connecting the main door lock contacts with an electrical connection contact. The handle can be used to quickly check whether the engagement depth of the main door lock meets the requirements.

[0009] In one embodiment, the elevator door lock inspection auxiliary device includes an insulated handle, at least three electrical connection contacts, and a fastening component. The at least three electrical connection contacts include a flat contact, a pin contact, and a stepped contact. The fastening component detachably connects any one of the at least three electrical connection contacts to the handle.

[0010] In some embodiments, the handle is elongated rectangular and has a thickness of 7 mm.

[0011] In some embodiments, one end of the handle has a first through hole, and each of the at least three electrical communication contacts has a second through hole. The fastening component includes a bolt and nut pair that secures the handle to the corresponding electrical communication contact via the first and second through holes.

[0012] In some embodiments, the handle has a hexagonal countersunk hole that overlaps with the first through hole to accommodate the hexagonal head of the bolt in the bolt and nut assembly.

[0013] In some embodiments, the planar contact includes a T-shaped insulator and a copper sheet. The vertical portion of the T-shaped insulator has a second through hole, and one side of the horizontal portion has a rectangular concave surface, in which the copper sheet is embedded.

[0014] In some embodiments, the contact pin type contact includes a T-shaped insulating member, a copper sheet, and two copper needles. The vertical portion of the T-shaped insulating member has a second through hole, and one side of the horizontal portion has a rectangular concave surface, in which the copper sheet is embedded; the horizontal portion has a first opening and a second opening penetrating the rectangular concave surface and the copper sheet; the two copper needles are respectively installed in the first opening and the second opening.

[0015] In some embodiments, the copper sheet is below the edge of the rectangular concave surface.

[0016] In some embodiments, at least one of the first opening and the second opening is an elongated opening.

[0017] In some embodiments, the portion of each of the two copper needles extending from the copper sheet side through the first and second openings is at least partially covered by an insulating layer but exposes a first end, and the second end of the copper needle, opposite to the first end, is located on the opposite side of the copper sheet of the transverse portion and engages with a nut.

[0018] In some embodiments, the stepped contact has an insulated mounting portion and a stepped portion. One end of the mounting portion along its length is connected to the stepped portion, and the length directions of the two are the same. The other end of the mounting portion along its length is provided with a second through hole. The stepped portion has a step along its length, and the surface of the step has a concave surface. A copper sheet is embedded in the concave surface, and the copper sheet is lower than the edge of the concave surface.

[0019] The following advantages can be achieved by implementing this utility model:

[0020] Using the device of this invention, with the landing door or car door open, the electrical connectivity of the auxiliary door lock can be verified by connecting the door lock contacts using an electrical connection contact; a 7mm thick handle can be used to quickly check whether the engagement depth of the main door lock meets the requirements. Therefore, this invention avoids the drawbacks of inspection methods such as using insulating materials or removing the auxiliary door lock, simplifies the inspection process, reduces oversights caused by cumbersome operations, and improves the efficiency and quality of elevator inspection.

[0021] This utility model adopts a multi-contact design, which basically covers the types of common main door locks and has wide applicability.

[0022] In addition, the main door lock is installed in a small space. By assembling the handle and the electrical connection contact at a certain angle, the inspector can easily insert the contact into the housing to complete the electrical connection operation, thus avoiding the space limitation.

[0023] In addition, the copper sheet of this utility model is embedded in the concave surface of the insulating material contact and is lower than the edge of the concave surface, which can prevent the copper sheet from accidentally conducting electricity when it comes into contact with other metal parts on the side when connecting the main door lock electrical contacts, such as short circuit to ground.

[0024] Furthermore, the device of this utility model adopts an integrated design, is lightweight, and is easy to carry and use.

[0025] The various aspects, features, and advantages of the embodiments of this utility model will be specifically described below in conjunction with the accompanying drawings. These aspects, features, and advantages will become clearer from the following detailed description in conjunction with the accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a perspective view schematically illustrating an auxiliary device for inspecting elevator door locks according to an embodiment.

[0027] Figure 2 It is shown Figure 1 A perspective view of an example of an insulated handle for an auxiliary device used for inspecting elevator door locks.

[0028] Figure 3 It is shown Figure 1 A perspective view of an example of a planar contact for an auxiliary device used in elevator door lock inspection.

[0029] Figure 4 and Figure 5 It is shown Figure 1 A perspective view of an example of a pin-type contact for an auxiliary device used in elevator door lock inspection.

[0030] Figure 6 It is shown Figure 1 A perspective view of an example of a stepped contact for an auxiliary device used in elevator door lock inspection.

[0031] Figure 7 It is shown Figure 1 A perspective view of an example of a fastening component for an auxiliary device used for inspecting elevator door locks. Detailed Implementation

[0032] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the present invention can have various embodiments and is not limited to the specific embodiments described herein or shown in the accompanying drawings.

[0033] The descriptions of element positions in this document (such as "top," "bottom," "above," "below," "left," "right," etc.) are used only to indicate the relative orientation of elements in the accompanying drawings. These descriptions are merely examples and are not intended to be limiting. In other embodiments, the orientation of the elements may differ, and these variations are also included within the scope of this disclosure.

[0034] Furthermore, terms such as “substantially,” “about,” and “roughly” are used herein as descriptive terms rather than as limitations on precision. These terms are intended to cover a reasonable range of error in production, measurement, or calculation that would be recognized by someone skilled in the art. Terms such as “comprising,” “including,” and “having” are used herein to indicate the presence of certain features, steps, operations, elements, and / or components, but do not exclude the presence or addition of other features, steps, operations, elements, components, or combinations thereof. Unless explicitly stated in the context, terms such as “first,” “second,” and similar terms do not indicate any priority or order, but are used only to distinguish different elements in the description.

[0035] To further clarify, the term "connection" and related terms used herein refer to the direct or indirect linking of two components. This connection can be fixed (e.g., permanent or non-removable) or movable (e.g., detachable or releasable). Connection methods include, but are not limited to: direct connection between two components, indirect connection via an intermediate component, and connection via an intermediate component integrally formed with one of the components.

[0036] Figures 1 to 6 An exemplary embodiment of an auxiliary device for inspecting elevator door locks is shown. In the exemplary embodiment, such as Figure 1 As shown, the auxiliary device for elevator door lock inspection includes an insulated handle 100, at least three types of electrical contactors, and fastening components. The at least three types of electrical contactors include a flat contact 210, a pin contact 220, and a stepped contact 230. Any one of the at least three types of electrical contactors is detachably connected to the handle. Figure 1 In the middle, the contact pin type contact 220 is connected to the insulating handle 100 via a bolt and nut pair 300.

[0037] In an exemplary implementation, such as Figure 2 As shown, the handle 100 is a long rectangular strip with a thickness of 7mm. Therefore, using the 7mm thick handle 100, the engagement depth of the main door lock can be quickly checked to ensure it meets the requirements. In some embodiments, the handle 100 can be coated with a bright color (e.g., orange) to facilitate comparison of whether the engagement depth is less than 7mm.

[0038] One end of the handle 100 is provided with a first through hole 101. For example... Figures 3 to 6 As shown, each of the at least three electrical connection contacts has a second through hole 201. (In conjunction with...) Figure 1 It can be seen that the bolt and nut assembly 300 fixes the handle 100 to the corresponding electrical contact via the first through hole 101 and the second through hole 201. For example... Figure 7 As shown, the bolt and nut assembly 300 includes a bolt 301 and a nut 302.

[0039] like Figure 2 As shown, the handle 100 has a hexagonal countersunk hole 102 that overlaps with the first through hole 101 to accommodate the hexagonal head of the bolt 301 in the bolt and nut assembly 300, and the other side is tightened with a nut 302. The nut 302 is covered with an insulating layer to facilitate tool-free tightening on site. Optionally, during connection, the insulated handle 100 can be at a certain angle to the corresponding electrical contact, for example, 45 degrees. Figure 1 As shown, this is to facilitate the connection of the main door lock electrical system within a limited space on site.

[0040] It should be understood that the insulated handle 100 can be made of a suitable insulating material known in the art, such as rigid plastic. The nut 302 or bolt 301 can also be made of the same insulating material.

[0041] In some implementations, such as Figure 3 As shown, the planar contact 210 is generally T-shaped, including a T-shaped insulating component and a copper sheet. Specifically, the vertical portion 211 of the T-shaped insulating component has a second through hole 201, and one side of the horizontal portion 212 has a rectangular concave surface, in which the copper sheet 213 is embedded. The copper sheet 213 is lower than the edge 214 of the rectangular concave surface to prevent accidental conduction. In an alternative embodiment, instead of the pin-type contact 220, the planar contact 210 can be connected to the insulating handle 100 via a bolt and nut pair 300. Thus, by holding the insulating handle 100, the planar contact 210 is inserted into the planar contact door lock, and its two electrical contacts are connected by the copper sheet 213.

[0042] In some implementations, such as Figure 4 and Figure 5 As shown, the contact pin type contact 220 includes a T-shaped insulating member, a copper sheet, and two copper pins. Specifically, the vertical portion 221 of the T-shaped insulating member has a second through hole 201, and one side of the horizontal portion 222 has a rectangular concave surface, in which a copper sheet 223 is embedded. The copper sheet 223 is lower than the edge 224 of the rectangular concave surface to prevent accidental conductivity. The horizontal portion has a first opening and a second opening penetrating the rectangular concave surface and the copper sheet 223; the two copper pins 221 are respectively installed in the first opening and the second opening. In some embodiments, at least one of the first opening and the second opening is an elongated opening. For example, Figure 4 and Figure 5 An elongated opening 224 is shown. Optionally, both openings are elongated openings.

[0043] In some embodiments, the portion of each of the two copper needles 221 extending from the copper sheet side through the first and second openings is at least partially covered by an insulating layer 226 but exposes a first end 227. The second end of the copper needle, opposite to the first end, is located on the opposite side of the copper sheet in the transverse portion 222 and engages with a nut 225. The nut 225 is externally covered with an insulating layer, facilitating tool-free fixing or loosening, thereby enabling on-site adjustment of the fastening position of the copper needles in the elongated opening 224, i.e., adjusting the spacing between the two copper needles to meet on-site testing requirements. In optional embodiments, the nut 225 may be made of an insulating material, such as rigid plastic.

[0044] like Figure 1 As shown, the pin-type contact 220 is connected to the insulating handle 100 via a bolt and nut assembly 300. Thus, by holding the insulating handle 100, the two copper pins 221 of the pin-type contact 220 are inserted into the pin-type door lock, connecting its two electrical contacts.

[0045] In an exemplary embodiment, the T-shaped insulator may be made of a suitable insulating material known in the art, such as rigid plastic.

[0046] In some implementations, such as Figure 6 As shown, the stepped contact 230 has an insulated mounting portion 231 and a stepped portion 232. One end of the mounting portion 231 in the longitudinal direction is connected to the stepped portion 232, and the length directions of the two are consistent. The other end of the mounting portion 231 in the longitudinal direction is provided with a second through hole 201; the stepped portion 232 has a step 233 along its length direction, and the surface of the step 233 has a concave surface, in which a copper sheet 234 is embedded. The copper sheet is lower than the edge 235 of the concave surface to prevent accidental conduction. The insulated mounting portion 231 and the stepped portion 232 can be made of suitable insulating materials known in the art, such as rigid plastics.

[0047] In an optional embodiment, instead of the pin-type contact 220, the stepped contact 230 is connected to the insulating handle 100 via a bolt and nut assembly 300. Thus, by holding the insulating handle 100, the stepped contact 230 is inserted into the stepped contact door lock, and its two electrical contacts are connected by a copper sheet 234.

[0048] Those skilled in the art should understand that the above disclosure is merely illustrative of embodiments of this disclosure, and the scope of patent protection claimed in this application is not limited thereto. Various modifications, alterations, substitutions, and other changes can be made to the embodiments disclosed herein without departing from the spirit and essence of this disclosure, and these changes are within the scope covered by the claims of this application. For example, the electrical connection contact in the exemplary embodiment uses a copper sheet as a conductor, but this invention is not limited to this and other conductors, such as aluminum sheets, can be used. Furthermore, it should be understood that this invention is not limited to the three electrical connection contacts described in the exemplary embodiment; depending on the object being detected, more types of electrical connection contacts can be selectively connected to the insulating handle 100.

Claims

1. An auxiliary device for inspecting elevator door locks, characterized in that, It includes an insulated handle, at least three types of electrical communication contacts, and fastening components, wherein the at least three types of electrical communication contacts include a planar contact, a pin-type contact, and a stepped contact; The fastening component detachably connects any one of the at least three electrical communication contacts to the handle.

2. The auxiliary device for elevator door lock inspection according to claim 1, characterized in that, The handle is long and rectangular and is 7mm thick.

3. The auxiliary device for elevator door lock inspection according to claim 2, characterized in that, One end of the handle is provided with a first through hole, and each of the at least three electrical communication contacts has a second through hole. The fastening components include a bolt and nut pair that secures the handle to the corresponding electrical contact via the first and second through holes.

4. The auxiliary device for elevator door lock inspection according to claim 3, characterized in that, The handle is provided with a hexagonal countersunk hole that overlaps with the first through hole to accommodate the hexagonal head of the bolt in the bolt and nut assembly.

5. The auxiliary device for elevator door lock inspection according to claim 3, characterized in that, The planar contact includes a T-shaped insulating element and a copper sheet. The T-shaped insulating component has a second through hole on its vertical portion and a rectangular concave surface on one side of its horizontal portion, in which the copper sheet is embedded.

6. The auxiliary device for elevator door lock inspection according to claim 3, characterized in that, The pin-type contact includes a T-shaped insulating component, a copper sheet, and two copper pins. The T-shaped insulating component has a second through hole on its vertical portion and a rectangular concave surface on one side of its horizontal portion, in which the copper sheet is embedded. The transverse portion is provided with a first opening and a second opening that penetrate the rectangular concave surface and the copper sheet; The two copper needles are respectively installed in the first opening and the second opening.

7. The auxiliary device for elevator door lock inspection according to claim 5 or 6, characterized in that, The copper sheet is below the edge of the rectangular concave surface.

8. The auxiliary device for elevator door lock inspection according to claim 6, characterized in that, At least one of the first opening and the second opening is an elongated opening.

9. The auxiliary device for elevator door lock inspection according to claim 6, characterized in that, The portion of each of the two copper needles extending from the copper sheet through the first and second openings is at least partially covered by an insulating layer but exposes the first end. The second end of the copper needle, opposite to the first end, is located on the opposite side of the copper sheet of the transverse portion and engages with the nut.

10. The auxiliary device for elevator door lock inspection according to claim 3, characterized in that, The stepped contact has an insulated mounting portion and a stepped portion. One end of the mounting part in the length direction is connected to the stepped part, and the length directions of the two are the same. The other end of the mounting part in the length direction is provided with the second through hole. The stepped portion has a step along its length, and the surface of the step has a concave surface. A copper sheet is embedded in the concave surface, and the copper sheet is lower than the edge of the concave surface.

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