A measuring instrument for measuring the width of an elevator door gap

Abstract

The application relates to the technical field of elevator door gap width measurement, and particularly relates to a measuring instrument for measuring the width of an elevator door gap, which comprises a measuring instrument body, the measuring instrument body comprises a plurality of measuring units, the measuring unit comprises a first contact plate, an expansion piece, a second contact plate and a scale assembly, the expansion piece, the first contact plate and the second contact plate form a telescopic air cavity structure; the scale assembly comprises a scale and a winding drum, the expansion piece is provided with a transparent window, the transparent window is used for observing the scale; the first contact plate is provided with an air passage assembly; the first contact plate is used for being attached to the side edge of a first elevator door, and the second contact plate is used for abutting against the side edge of a second elevator door. The measuring instrument for measuring the width of an elevator door gap can enable a user to accurately feed back abnormal information of the elevator door to property or elevator maintenance personnel in time after discovering that the width of the elevator door gap is abnormal, and can reduce the risk of finger injury.

Description

Technical Field

[0001] This invention relates to the field of elevator door gap width measurement technology, and specifically to a measuring instrument for measuring the width of elevator door gaps. Background Technology

[0002] During daily use, elevators may experience a sudden and abnormal increase in door gaps due to equipment aging, improper maintenance, or wear and tear on the door guide rails. While such elevators with abnormally large door gaps usually do not stop due to these malfunctions and can still operate, they pose significant safety hazards. For example, children may insert their fingers into the door gaps, resulting in finger injuries. Furthermore, because current elevators are not equipped with specialized measuring instruments to measure door gap width, users who discover abnormally large gaps find it difficult to accurately report the anomaly to property management or elevator maintenance personnel. This makes it difficult for maintenance personnel to obtain accurate door gap width data before arriving on site, hindering their ability to assess the abnormality and ultimately reducing the efficiency of subsequent elevator repairs.

[0003] Therefore, how to measure the width of elevator door gaps so that users can accurately report any abnormalities to property management or elevator maintenance personnel is a pressing technical problem that needs to be solved. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned shortcomings in current elevator door gap width measurement methods, by providing a measuring instrument for measuring elevator door gap width. This allows users to accurately and promptly report any abnormalities to property management or elevator maintenance personnel.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0006] A measuring instrument for measuring the width of elevator door gaps includes a measuring instrument body, which includes a plurality of measuring units arranged in a strip. Each measuring unit includes a first contact plate, a telescopic member, a second contact plate, and a measuring scale assembly. One end of the telescopic member is connected to the first contact plate, and the other end is connected to the second contact plate. The telescopic member, the first contact plate, and the second contact plate form a telescopic air cavity structure.

[0007] The measuring tape assembly includes a measuring tape and a winding drum. The winding drum is disposed on the second contact plate. One end of the measuring tape is connected to the first contact plate, and the other end is wound onto the winding drum. The winding drum is used to keep the unwound portion of the measuring tape always taut. The telescopic component is provided with a transparent window for observing the measuring tape.

[0008] The first contact plate is provided with a ventilation component, which is used to change the amount of gas in the air chamber so that the telescopic member can extend and retract, thereby changing the distance between the first contact plate and the second contact plate.

[0009] The first contact plate is used to be attached to the side of the first elevator door, and the second contact plate is used to abut against the side of the second elevator door.

[0010] As the preferred technical solution of this application, the ventilation component includes an outlet pipe and an inlet pipe, both of which are connected to the air chamber. A one-way valve is provided on the outlet pipe to prevent gas from the external environment from entering the air chamber along the outlet pipe. A first switch is provided on the inlet pipe to control the opening and closing of the inlet pipe.

[0011] The telescopic member is provided with a first spring. The first spring is elastic. One end of the first spring is connected to a first contact plate, and the other end of the first spring is connected to a second contact plate. The first spring is used to provide elastic force so that the telescopic member can be in its maximum elongation state under the action of the elastic force of the first spring.

[0012] As the preferred technical solution of this application, a first adhesive portion is formed on the first contact plate, and the first contact plate is attached to the side of the first elevator door through the first adhesive portion;

[0013] The second contact plate is provided with a second adhesive part, and the second adhesive part is adhesive;

[0014] Furthermore, the adhesive strength of the first adhesive part is higher than that of the second adhesive part;

[0015] When the second elevator door pushes against the second contact plate to shorten the telescopic component, the second adhesive part can stick to the side of the second elevator door;

[0016] As the elevator door gradually opens from a closed position, the second adhesive part can gradually separate from the side of the second elevator door, while the first adhesive part remains attached to the side of the first elevator door.

[0017] As the preferred technical solution of this application, a second switch is provided on the air outlet pipe. The second switch is used to control the opening and closing of the air outlet pipe. The part of the air outlet pipe where the second switch is provided is farther away from the air chamber than the part of the air outlet pipe where the one-way valve is provided.

[0018] As the preferred technical solution of this application, a plurality of first contact plates are connected to form a whole and are made into a long strip shape, with adjacent telescopic members being in a non-connected state and adjacent second contact plates being in a non-connected state.

[0019] As the preferred technical solution of this application, the adjacent first contact plates are flexibly connected.

[0020] As a preferred technical solution of this application, the air intake pipes on several of the measuring units are combined into a main air intake pipe, and the first switch is located on the main air intake pipe, with several of the measuring units sharing a single first switch.

[0021] As a preferred technical solution of this application, the air outlet pipes on several of the measuring units are combined into a main air outlet pipe, and the second switch is located on the main air outlet pipe, with several of the measuring units sharing a single second switch.

[0022] As a preferred technical solution of this application, the first adhesive part and / or the second adhesive part can be replaced.

[0023] As a preferred technical solution of this application, it also includes a housing for placing the measuring instrument body and for fixing it inside the elevator.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. In the solution of this application, when the elevator door gap suddenly and abnormally widens due to equipment aging, improper maintenance, or wear of the door guide rail, the user can use the measuring instrument body of this application to measure the width of the elevator door gap while riding the elevator. Specifically, the user first attaches the first contact plates of several measuring units to the side of the first elevator door, arranging the measuring units along the length of the side of the first elevator door in a vertical arrangement. The elevator door can be opened while attaching the first contact plates. Because the attachment is easy and quick, the user can quickly attach the first contact plates to the side of the first elevator door, thus reducing the risk of the attachment operation and making the operation feasible. After the first contact plates are attached, the elevator door closes, and the ventilation components are... The system controls the amount of gas in the air chamber, so that after the elevator door closes, the second contact plate abuts against the side of the second elevator door. This causes one side of the measuring unit to contact the side of the first elevator door and the other side to contact the side of the second elevator door. By taking a reading from the measuring scale, the distance between the first and second elevator doors can be measured. The length direction of the unwound portion of the measuring scale is the same as the length direction of the telescopic component, and the length of the unwound portion of the measuring scale is proportional to the distance between the first and second contact plates. By observing the length of the unwound portion of the measuring scale, the distance between the first and second contact plates can be measured indirectly. Furthermore, with measurements from several measuring units, the width of the elevator door gap at multiple locations can be measured, facilitating the acquisition of more comprehensive elevator door gap width data.

[0026] Furthermore, during the measurement of elevator door gaps, the elevator door gap width data is obtained based on the contact between the first and second contact plates and the corresponding elevator door. Users do not need to actively use a ruler to measure, which improves the safety of measuring elevator door gaps and the accuracy of the measured elevator door gap width data. This makes it easier for users to accurately report the abnormal elevator door gap width to the property management or elevator maintenance personnel in a timely manner.

[0027] Meanwhile, after the elevator door closes and the second contact plate abuts against the second elevator door, the ventilation component is controlled to maintain the amount of gas in the air chamber in order to maintain the distance between the first contact plate and the second contact plate. This allows the measuring unit to form a stable shield after the elevator door closes, thereby filling the gap in the elevator door and further reducing the risk of children sticking their fingers into the gap in the elevator door, thus reducing the risk of their fingers being pinched.

[0028] 2. Based on the configuration of a one-way valve, a first switch, and a first spring, when the first switch is opened, gas enters the air chamber along the inlet pipe under the elastic force of the first spring. The telescopic component gradually extends to its maximum extension, thus maximizing the length of the individual measuring unit. Then, the first switch is closed. As the elevator door gradually closes, the second elevator door contacts the second contact plate, pushing the second contact plate to move. This allows the gas in the air chamber to be discharged through the one-way valve and the outlet pipe, facilitating the movement of the second elevator door and the second contact plate. Once the elevator door is closed to its maximum extent, the width of the elevator door gap corresponds to the length of the measuring unit, thereby further improving the measurement of the elevator door. The convenience of measuring the gap width, and the fact that the movement of the second contact plate depends entirely on the movement of the second elevator door, makes the measuring unit more automated and safer in the process of measuring the gap width; at the same time, under the action of the one-way valve, when the first switch is closed, it can prevent the gas in the external environment from entering the air chamber after the elevator door is reopened, thus making it easier to maintain the gas volume in the air chamber. Without the active squeezing of the measuring unit, it is easy to keep the measuring unit at a stable length. At this time, the user can read the gap width data measured by the measuring unit after the elevator door is opened, thus further improving the convenience of the user to read the data;

[0029] 3. By setting a first adhesive part and a second adhesive part, and making the adhesive strength of the first adhesive part higher than that of the second adhesive part, when measuring the width of the elevator door gap, as the second elevator door moves against the second contact plate, the second adhesive part can stick to the side of the second elevator door. Thus, after the elevator door is closed, both the first adhesive part and the second adhesive part are stuck to the elevator door, which can improve the stability of the shielding member formed by the measuring unit at the elevator door gap and further prevent the measuring unit from shifting. At the same time, as the elevator door gradually opens from the closed state, the second adhesive part can gradually separate from the side of the second elevator door, while the first adhesive part can always stick to the side of the first elevator door. This makes it easy for the measuring unit to remain on the side of the first elevator door when the elevator door is open.

[0030] 4. By setting a second switch, when the measuring unit measures the width of the elevator door gap, the second switch is in the open state. This allows the gas in the air chamber to be discharged through the air outlet pipe under the pushing action of the second elevator door. After the measuring unit measures the width of the elevator door gap for the first time, the second switch can be closed to block the air outlet pipe. This helps to maintain the amount of gas in the air chamber and prevents the gas in the air chamber from decreasing when the user accidentally pushes the measuring unit, thereby further improving the stability of the formed shielding component.

[0031] Furthermore, due to the compressibility of gas, once the amount of gas in the gas chamber is constant, when the measuring unit is compressed along its length, the size of the gas chamber can decrease slightly, thus reducing the length of the measuring unit slightly. After the external force is removed, the size of the gas chamber can recover, allowing the length of the measuring unit to return to its pre-compression state. This gives the measuring unit elasticity, which acts as a buffer. Before maintenance personnel arrive on-site for repairs, and while some users are still using the elevator, this reduces the risk of injury to users when they collide with the measuring unit on the first elevator door, further improving the safety of the measuring instrument in use. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of one embodiment of a measuring instrument for measuring the width of elevator door gaps according to this application;

[0033] Figure 2 This is a schematic diagram of the structure of a measuring instrument for measuring the width of elevator door gaps according to this application, when the second contact plate does not abut against the side of the elevator door.

[0034] Figure 3 This is a schematic diagram of the structure of a measuring instrument for measuring the width of elevator door gaps according to this application, in which the second contact plate abuts against the side of the elevator door.

[0035] Figure 4 This is a schematic diagram of the structure of a single measuring unit in one embodiment of a measuring instrument for measuring the width of elevator door gaps according to this application;

[0036] Figure 5 This is a schematic diagram of the structure of a measuring instrument for measuring the width of elevator door gaps, as described in this application, located at the winding drum and without a measuring scale displayed.

[0037] Figure 6 This is a partial structural diagram of the telescopic component in one embodiment of a measuring instrument for measuring the width of elevator door gaps, as described in this application, when the component is retracted.

[0038] Figure 7 This is a partial structural diagram of the telescopic component in one embodiment of a measuring instrument for measuring the width of elevator door gaps according to this application, when it is in the extended position.

[0039] Figure 8 This is a schematic diagram of the structure of the air outlet pipe and air inlet pipe arranged on the first contact plate in one embodiment of the measuring instrument for measuring the width of elevator door gaps according to this application.

[0040] Figure 9This is a schematic diagram of the structure of a measuring instrument body folded and kept inside a box in one embodiment of a measuring instrument for measuring the width of elevator door gaps according to this application.

[0041] The diagram shows: 1-Measuring instrument body, 2-Measuring unit, 3-First contact plate, 4-Telescopic component, 5-Second contact plate, 6-Measuring scale assembly, 7-Measuring scale, 8-Rewinding drum, 9-Ventilation assembly, 10-Matching column, 11-Curling spring, 12-Outlet pipe, 13-Inlet pipe, 14-One-way valve, 15-First switch, 16-First spring, 17-First adhesive part, 18-Second adhesive part, 19-Second switch, 20-Main air inlet pipe, 21-Main air outlet pipe, 22-Box body, 141-Valve core, 142-Second spring. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0043] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0044] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0046] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0047] Example 1: This example provides a measuring instrument for measuring the width of elevator door gaps. See [link to example]. Figures 1-8 As shown, the instrument includes a measuring instrument body 1, which includes several measuring units 2 arranged in a strip shape. Each measuring unit 2 includes a first contact plate 3, a telescopic member 4, a second contact plate 5, and a measuring scale assembly 6. One end of the telescopic member 4 is connected to the first contact plate 3, and the other end is connected to the second contact plate 5. The telescopic member 4, the first contact plate 3, and the second contact plate 5 form a telescopic air cavity structure.

[0048] The measuring scale assembly 6 includes a measuring scale 7 and a winding drum 8. The winding drum 8 is disposed on the second contact plate 5. One end of the measuring scale 7 is connected to the first contact plate 3, and the other end is wound onto the winding drum 8. The winding drum 8 is used to keep the unwound portion of the measuring scale 7 taut at all times. The telescopic member 4 is provided with a transparent window for observing the measuring scale 7.

[0049] The first contact plate 3 is provided with a ventilation component 9, which is used to change the amount of gas in the air chamber so that the telescopic member 4 can extend and retract to change the distance between the first contact plate 3 and the second contact plate 5.

[0050] The first contact plate 3 is used to be attached to the side of the first elevator door, and the second contact plate 5 is used to abut against the side of the second elevator door.

[0051] In this application, when the elevator door gap suddenly and abnormally widens due to equipment aging, improper maintenance, or wear of the door guide rail, the user can use the measuring instrument body 1 of this application to measure the width of the elevator door gap while riding the elevator. Specifically, the user first attaches the first contact plates 3 on several measuring units 2 to the side of the first elevator door, arranging the several measuring units 2 along the length of the side of the first elevator door in a vertical arrangement. The first contact plates 3 can be attached while the elevator door is open. Because the attachment is easy and quick, the user can quickly attach the first contact plates 3 to the side of the first elevator door, thus reducing the risk of the attachment operation and making the operation feasible. After the first contact plates 3 are attached, as the elevator door closes, the ventilation component 9 is controlled. This controls the amount of gas in the air chamber, so that after the elevator door closes, the second contact plate 5 abuts against the side of the second elevator door. This makes one side of the measuring unit 2 contact the side of the first elevator door and the other side contact the side of the second elevator door. By taking a reading from the measuring scale 7, the distance between the first and second elevator doors can be measured. The length direction of the unwound portion of the measuring scale 7 is the same as the length direction of the telescopic member 4, and the length of the unwound portion of the measuring scale 7 is proportional to the distance between the first contact plate 3 and the second contact plate 5. By observing the length of the unwound portion of the measuring scale 7, the distance between the first contact plate 3 and the second contact plate 5 can be measured indirectly. Furthermore, with the measurement of several measuring units 2, the width of the elevator door gap at multiple locations can be measured, making it easier to obtain more comprehensive elevator door gap width data.

[0052] Furthermore, during the measurement of elevator door gaps, the elevator door gap width data is obtained based on the contact between the first contact plate 3 and the second contact plate 5 and the corresponding elevator door. Users do not need to actively use a ruler to measure. This improves the safety of measuring elevator door gaps and the accuracy of the measured elevator door gap width data. This makes it easier for users to accurately report the abnormal elevator door gap width to the property management or elevator maintenance personnel in a timely manner.

[0053] Meanwhile, after the elevator door is closed and the second contact plate 5 abuts against the second elevator door, the ventilation component 9 is controlled to maintain the amount of gas in the air chamber so as to maintain the distance between the first contact plate 3 and the second contact plate 5. This allows the measuring unit 2 to form a stable shield after the elevator door is closed, thereby filling the gap in the elevator door and further reducing the risk of children sticking their fingers into the gap in the elevator door, thus reducing the risk of fingers being pinched.

[0054] Furthermore, when the elevator to be measured has a center-opening door, the first elevator door refers to one of the elevator doors, and the second elevator door refers to the opposite elevator door; when the elevator to be measured has a side-opening door, the first elevator door refers to the elevator door, and the second elevator door is equivalent to the door frame corresponding to that elevator door.

[0055] Meanwhile, when the telescopic component 4 is shortened to its shortest length, the length of a single measuring unit 2 is 4-6mm. When the telescopic component 4 is extended to its longest length, the length of a single measuring unit 2 is 30-45mm. Thus, the measuring instrument of this application can meet the measurement requirements of abnormal elevator door gap width in most cases.

[0056] Meanwhile, in this application, a mating post 10 is formed on the second contact plate 5, and the winding drum 8 is rotatably connected to the mating post 10. A spring 11 is also provided between the mating post 10 and the winding drum 8. The spring 11 provides elastic force to make a part of the measuring tape 7 be wound onto the winding drum 8, and to keep the unwound part of the measuring tape 7 always taut. The way in which the mating post 10, the winding drum 8 and the spring cooperate to wind the measuring tape can be the same as the winding method on the measuring tape in the prior art.

[0057] In a preferred embodiment, based on the above method, the ventilation assembly 9 further includes an outlet pipe 12 and an inlet pipe 13, both of which are connected to the air chamber. A one-way valve 14 is provided on the outlet pipe 12 to prevent gas from the external environment from entering the air chamber along the outlet pipe 12. A first switch 15 is provided on the inlet pipe 13 to control the opening and closing of the inlet pipe 13.

[0058] The telescopic member 4 is provided with a first spring 16. The first spring 16 is elastic. One end of the first spring 16 is connected to the first contact plate 3, and the other end of the first spring 16 is connected to the second contact plate 5. The first spring 16 is used to provide elastic force so that the telescopic member 4 can be in the maximum elongation state under the action of the elastic force of the first spring 16.

[0059] Furthermore, based on the configuration of the one-way valve 14, the first switch 15, and the first spring 16, when the first switch 15 is opened, under the elastic force of the first spring 16, gas enters the air chamber along the air inlet pipe 13, and the telescopic member 4 can gradually extend to its maximum extension state, thereby maximizing the length of the single measuring unit 2. Then, the first switch 15 is closed. As the elevator door gradually closes, the second elevator door contacts the second contact plate 5, pushing the second contact plate 5 to move, causing the gas in the air chamber to be discharged through the one-way valve 14 and the air outlet pipe 12. This facilitates the second elevator door pushing the second contact plate 5 to move. When the elevator door is closed to its maximum extent, the width of the elevator door gap is the length corresponding to the measuring unit 2, thus enabling… This further improves the convenience of measuring the width of the elevator door gap. Furthermore, the movement of the second contact plate 5 relies entirely on the movement of the second elevator door, making the measuring unit 2 more automated and safer during the measurement of the door gap width. Simultaneously, under the action of the one-way valve 14, with the first switch 15 closed, after the elevator door reopens, it prevents gas from the external environment from entering the air chamber, thus facilitating the maintenance of the gas volume within the air chamber. Without human intervention to actively compress the measuring unit 2, it helps maintain a stable length. At this point, the user can read the door gap width data measured by the measuring unit 2 after the elevator door opens, further improving the convenience of reading the data.

[0060] Furthermore, the one-way valve 14 includes a valve core 141 and a second spring 142. A stepped structure is formed on the side wall of its outlet pipe 12. One end of the second spring 142 is connected to the valve core 141, and the other end is connected to the inner wall of the outlet pipe 12. When the second spring 142 and the valve core 141 are not subjected to external force, the second spring 142 provides elastic force to make the valve core 141 resist the stepped structure, so as to prevent gas in the external environment from entering the air chamber along the outlet pipe 12. At the same time, the gas in the air chamber can push the valve core 141 to move, so that the valve core 141 releases the resisting action with the stepped structure, and increases the deformation of the second spring 142, thereby allowing the gas in the air chamber to be discharged from the outlet pipe 12 through the one-way valve 14.

[0061] As a preferred embodiment, based on the above method, a first adhesive portion 17 is formed on the first contact plate 3, and the first contact plate 3 is adhered to the side of the first elevator door through the first adhesive portion 17.

[0062] The second contact plate 5 is provided with a second adhesive part 18, and the second adhesive part 18 is adhesive;

[0063] Furthermore, the adhesive strength of the first adhesive part 17 is higher than that of the second adhesive part 18;

[0064] When the second elevator door pushes against the second contact plate 5 to shorten the telescopic member 4, the second adhesive part 18 can be stuck to the side of the second elevator door.

[0065] As the elevator door gradually opens from a closed position, the second adhesive part 18 can gradually separate from the side of the second elevator door, while the first adhesive part 17 remains attached to the side of the first elevator door.

[0066] Furthermore, by setting a first adhesive part 17 and a second adhesive part 18, and making the adhesive strength of the first adhesive part 17 higher than that of the second adhesive part 18, when measuring the width of the elevator door gap, as the second elevator door moves against the second contact plate 5, the second adhesive part 18 can be stuck to the side of the second elevator door. Thus, after the elevator door is closed, both the first adhesive part 17 and the second adhesive part 18 are stuck to the elevator door, thereby improving the stability of the shielding member formed by the measuring unit 2 at the elevator door gap and further preventing the measuring unit 2 from shifting. At the same time, as the elevator door gradually opens from the closed state, the second adhesive part 18 can gradually separate from the side of the second elevator door, while the first adhesive part 17 can always be stuck to the side of the first elevator door. This makes it easy for the measuring unit 2 to remain on the side of the first elevator door when the elevator door is open.

[0067] In this application, the adhesive area of ​​the second adhesive part 18 can be smaller than that of the first adhesive part 17, thereby achieving the effect that the adhesive strength of the first adhesive part 17 is higher than that of the second adhesive part 18. Furthermore, the second adhesive part 18 can be a removable adhesive, thereby enabling the second adhesive part 18 to be repeatedly adhered to the side of the second elevator door.

[0068] Example 2: Based on the technical solution of Example 1, further details are provided below. Figures 1-8 As shown, a second switch 19 is provided on the air outlet pipe 12. The second switch 19 is used to control the opening and closing of the air outlet pipe 12. The part of the air outlet pipe 12 where the second switch 19 is provided is farther away from the air chamber than the part of the air outlet pipe 12 where the one-way valve 14 is provided.

[0069] Furthermore, by setting a second switch 19, when the measuring unit 2 measures the width of the elevator door gap, the second switch 19 is in the open state, so that the gas in the air chamber can be discharged through the air outlet pipe 12 under the pushing action of the second elevator door. After the measuring unit 2 measures the width of the elevator door gap for the first time, the second switch 19 can be closed to block the air outlet pipe 12, so as to maintain the amount of gas in the air chamber and avoid the gas in the air chamber from decreasing when the user accidentally pushes the measuring unit 2, thereby further improving the stability of the formed shielding component.

[0070] Furthermore, due to the compressibility of gas, once the amount of gas in the gas chamber is constant, when the measuring unit 2 is compressed along its length, the size of the gas chamber can decrease slightly, thus reducing the length of the measuring unit 2 slightly. After the external force is removed, the size of the gas chamber can be restored, allowing the length of the measuring unit 2 to return to its pre-compression state. This gives the measuring unit 2 elasticity, which can act as a buffer. Before maintenance personnel arrive on site for repairs, and while some users are still using the elevator, this reduces the risk of injury to users when they collide with the measuring unit 2 on the first elevator door, further improving the safety of the measuring instrument in use.

[0071] In this application, both the first switch 15 and the second switch 19 are used to control the opening and closing of the pipeline. Their specific structures are existing technologies and will not be described in detail here.

[0072] As a preferred embodiment, based on the above method, a plurality of first contact plates 3 are connected to form a whole and are made into a long strip shape, with adjacent telescopic members 4 being in a non-connected state and adjacent second contact plates 5 being in a non-connected state.

[0073] Furthermore, the first contact plates 3 are connected as a whole, which further improves the convenience of attaching several first contact plates 3 to the side of the first elevator door, while ensuring that adjacent telescopic parts 4 and adjacent second contact plates 5 are not connected, so that the measuring unit 2 can perform measurement operations independently.

[0074] As a preferred embodiment, based on the above method, the adjacent first contact plates 3 are further provided as a flexible connection.

[0075] Furthermore, the adjacent first contact plates 3 are flexibly connected, and the adjacent first contact plates 3 can be connected by rubber material, so that the measuring instrument body 1 can be folded and stored before use.

[0076] Example 3: Based on the technical solution of Example 2, further details are provided below. Figures 1-9 As shown, the air intake pipes 13 on several of the measuring units 2 are combined into a main air intake pipe 20, and the first switch 15 is located on the main air intake pipe 20. Several of the measuring units 2 share a first switch 15.

[0077] Furthermore, by merging the air inlet pipes 13 on several measuring units 2 into a main air inlet pipe 20, it is convenient to inflate multiple measuring units 2.

[0078] As a preferred embodiment, based on the above method, the air outlet pipes 12 on several of the measuring units 2 are further combined into a main air outlet pipe 21, and the second switch 19 is located on the main air outlet pipe 21, with several of the measuring units 2 sharing a second switch 19.

[0079] Furthermore, by merging the outlet pipes 12 on several measuring units 2 into a main outlet pipe 21 and having several measuring units 2 share a second switch 19, the convenience of maintaining the gas volume in the gas chambers on multiple measuring units 2 is further improved.

[0080] As a preferred embodiment, based on the above method, the first adhesive part 17 and / or the second adhesive part 18 can be replaced.

[0081] Furthermore, making the first adhesive part 17 and the second adhesive part 18 replaceable facilitates the repeated use of the measuring instrument body 1 of this application. At the same time, during the replacement of the first adhesive part 17 and the second adhesive part 18, the old first adhesive part 17 and the second adhesive part 18 on the measuring instrument body 1 need to be removed, and then the new first adhesive part 17 and the second adhesive part 18 are glued or fixed on the measuring instrument body 1. Meanwhile, the parts of the first adhesive part 17 and the second adhesive part 18 that come into contact with the elevator door are provided with a peelable film layer so as to protect the first adhesive part 17 and the second adhesive part 18 before the measuring instrument body 1 is used.

[0082] As a preferred embodiment, based on the above method, it further includes a box 22, which is used to place the measuring instrument body 1 and is used to fix it inside the elevator.

[0083] Furthermore, by setting up the housing 22, it is easier to place the measuring instrument body 1, thereby improving the convenience for users to use the measuring instrument body 1.

[0084] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. A measuring instrument for measuring the width of elevator door gaps, characterized in that: The instrument includes a measuring instrument body, which includes several measuring units arranged in a strip. Each measuring unit includes a first contact plate, a telescopic component, a second contact plate, and a measuring scale assembly. One end of the telescopic component is connected to the first contact plate, and the other end is connected to the second contact plate. The telescopic component, the first contact plate, and the second contact plate form a telescopic air cavity structure. The measuring tape assembly includes a measuring tape and a winding drum. The winding drum is disposed on the second contact plate. One end of the measuring tape is connected to the first contact plate, and the other end is wound onto the winding drum. The winding drum is used to keep the unwound portion of the measuring tape always taut. The telescopic component is provided with a transparent window for observing the measuring tape. The first contact plate is provided with a ventilation component, which is used to change the amount of gas in the air chamber so that the telescopic member can extend and retract, thereby changing the distance between the first contact plate and the second contact plate. The first contact plate is used to be attached to the side of the first elevator door, and the second contact plate is used to abut against the side of the second elevator door; The ventilation assembly includes an outlet pipe and an inlet pipe, both of which are connected to the air chamber. A one-way valve is provided on the outlet pipe to prevent gas from the external environment from entering the air chamber along the outlet pipe. A first switch is provided on the inlet pipe to control the opening and closing of the inlet pipe. The telescopic member is provided with a first spring. The first spring is elastic. One end of the first spring is connected to a first contact plate, and the other end of the first spring is connected to a second contact plate. The first spring is used to provide elastic force so that the telescopic member can be in its maximum elongation state under the action of the elastic force of the first spring.

2. The measuring instrument for measuring the width of elevator door gaps as described in claim 1, characterized in that: The first contact plate has a first adhesive portion, and the first contact plate is attached to the side of the first elevator door through the first adhesive portion; The second contact plate is provided with a second adhesive part, and the second adhesive part is adhesive; Furthermore, the adhesive strength of the first adhesive part is higher than that of the second adhesive part; When the second elevator door pushes against the second contact plate to shorten the telescopic component, the second adhesive part can stick to the side of the second elevator door; As the elevator door gradually opens from a closed position, the second adhesive part can gradually separate from the side of the second elevator door, while the first adhesive part remains attached to the side of the first elevator door.

3. The measuring instrument for measuring the width of elevator door gaps as described in claim 2, characterized in that: A second switch is provided on the air outlet pipe. The second switch is used to control the opening and closing of the air outlet pipe. The part of the air outlet pipe with the second switch is farther away from the air chamber than the part of the air outlet pipe with the one-way valve.

4. The measuring instrument for measuring the width of elevator door gaps as described in claim 3, characterized in that: Several first contact plates are connected to form a whole and are made into a long strip shape, with adjacent telescopic members not connected and adjacent second contact plates not connected.

5. A measuring instrument for measuring the width of elevator door gaps as described in claim 4, characterized in that: The adjacent first contact plates are flexibly connected.

6. The measuring instrument for measuring the width of elevator door gaps as described in claim 5, characterized in that: The air intake pipes of several of the measuring units are combined into a main air intake pipe, and the first switch is located on the main air intake pipe. Several of the measuring units share a first switch.

7. A measuring instrument for measuring the width of elevator door gaps as described in claim 6, characterized in that: The air outlet pipes of several of the measuring units are combined into a main air outlet pipe, and the second switch is located on the main air outlet pipe. Several of the measuring units share a second switch.

8. A measuring instrument for measuring the width of elevator door gaps as described in claim 2, characterized in that: The first adhesive part and / or the second adhesive part can be replaced.

9. A measuring instrument for measuring the width of elevator door gaps as described in claim 8, characterized in that: It also includes a housing for holding the measuring instrument and for fixing it inside the elevator.

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