Loosening prevention device for car door limiter

Abstract

The utility model provides an anti-loosening device for a vehicle door limiter, and relates to the technical field of hoisting machinery. The locking device of the car door limiter comprises a spring and a connecting line, one end of the spring is provided with a ring, and the other end is provided with a first hook; one end of the connecting line is provided with a second hook, and the other end of the connecting line is provided with a third hook; the second hook is hung in the circular ring; when the automobile door is closed, the third hook is hung on a first fixing point outside the automobile door, and the first hook is hung on a second fixing point on the automobile door; when the vehicle door is closed, the spring and the connecting line are used for jointly tensioning the vehicle door through the first fixing point, so that poor contact of the vehicle door limiter is avoided. According to the locking device for the vehicle door limiter, when the vehicle door limiter is in poor contact, the vehicle door can be tensioned through the spring, so that the vehicle door limiter is in good contact, the problems that the vehicle door limiter is in poor contact due to vibration and the vehicle door limiter works intermittently are solved, and the safety of a vehicle is enhanced.

Description

Technical Field

[0001] This application relates to the technical field of hoisting machinery, and particularly to a door limiter anti-loosening device. Background Art

[0002] A door limiter anti-loosening device is a device that prevents poor contact problems from occurring in a door limiter during use. This device is usually used in combination with a door limiter, and additional mechanical or electronic components are used to ensure the normal operation of the door limiter.

[0003] In the prior art, when the door is closed, the door limiter is in a closed state, and when the door is opened, the door limiter is in an open state. A latch is provided on the door to keep the door closed, so that the door limiter is in a closed state.

[0004] However, in the prior art, vibrations will be generated during the operation of the vehicle, and the vibrations may cause the latch to become loose, resulting in the door being unable to close or not fully close, and further causing the door limiter to be unable to close or not fully close, resulting in the problem of intermittent operation of the door limiter. When the vehicle is in a normal operating state, the door limiter suddenly disconnects, and the entire vehicle experiences a power-off phenomenon, reducing the safety of vehicle use. Utility Model Content

[0005] This application provides a door limiter anti-loosening device to solve the problem of intermittent operation of the door limiter caused by poor contact of the door limiter.

[0006] In a first aspect, this application provides a door limiter anti-loosening device, which includes: a spring and a connecting line;

[0007] One end of the spring is provided with a ring, and the other end of the spring is provided with a first hook;

[0008] One end of the connecting line is provided with a second hook, and the other end of the connecting line is provided with a third hook;

[0009] The second hook is hung inside the ring;

[0010] When the door is closed, the third hook is hung on a first fixed point outside the vehicle door, and the first hook is hung on a second fixed point on the vehicle door;

[0011] When the door is closed, the spring and the connecting line are used to jointly tighten the door through the first fixed point to avoid poor contact of the door limiter.

[0012] In a possible design, the door limiter anti-loosening device further includes: a steel pipe and a pull ring;

[0013] The steel pipe is sleeved on the spring, and the steel pipe is used to protect the spring;

[0014] The pull ring is arranged on the steel pipe, and the pull ring is used to provide a convenient handle for operation.

[0015] In a possible design, the steel pipe is provided with a groove, and the pull ring is used to be connected with the steel pipe through the groove;

[0016] The pull ring is also used to move on the steel pipe through the groove.

[0017] In a possible design, the steel pipe is provided with a lock catch, and the lock catch is used to fix the pull ring after the pull ring reaches the target position.

[0018] In a possible design, the anti-loosening device of the car door limiter further includes: a gasket;

[0019] The gasket is arranged on the inner side of the steel pipe, and the gasket is used to reduce the friction between the spring and the steel pipe.

[0020] In a possible design, the shapes of the first hook, the second hook and the third hook are eyelet shapes.

[0021] In a possible design, the anti-loosening device of the car door limiter further includes: an alarm;

[0022] One end of the alarm is connected to the first hook, and the other end of the alarm is connected to the second fixed point. The alarm is used to detect the tension of the spring and issue an alarm when the tension of the spring is greater than the upper limit of the tension of the spring.

[0023] In a possible design, the alarm includes: a tension sensor and a signal lamp;

[0024] One end of the tension sensor is connected to the first hook, and the other end of the tension sensor is connected to the second fixed point. The tension sensor is used to detect the tension of the spring;

[0025] The tension sensor is also connected to the signal lamp, and the tension sensor is also used to send an alarm signal to the signal lamp when the tension of the spring is greater than the upper limit of the tension of the spring;

[0026] The signal lamp is used to light up after receiving the alarm signal sent by the tension sensor.

[0027] In a possible design, the alarm further includes: a buzzer;

[0028] The buzzer is connected to the tension sensor and is configured to emit a sound after receiving an alarm signal sent by the tension sensor.

[0029] In a possible design, a bolt hole is provided at the other end of the tension sensor, and the bolt hole is used to connect the tension sensor and the second fixed point.

[0030] The present application provides a door limiter anti-loosening device, which includes a spring and a connecting wire; a ring is provided at one end of the spring, and a first hook is provided at the other end of the spring; a second hook is provided at one end of the connecting wire, and a third hook is provided at the other end of the connecting wire; the second hook is hung inside the ring; when the door is closed, the third hook is hung on a first fixed point outside the door, and the first hook is hung on a second fixed point on the door; when the door is closed, the spring and the connecting wire are configured to jointly tighten the door through the first fixed point to prevent the door limiter from having poor contact. In the door limiter anti-loosening device according to the embodiment of the present application, when the door limiter has poor contact, the door can be tightened by the spring to make the contact of the door limiter good, avoiding problems caused by poor contact of the door limiter due to vibration and the problem of intermittent operation of the door limiter, and enhancing the safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 It is a schematic diagram of the system architecture of the door limiter anti-loosening device provided by the embodiment of the present application;

[0033] Figure 2 It is a schematic structure diagram of the door limiter anti-loosening device provided by the embodiment of the present application Figure 1 ;

[0034] Figure 3 It is a schematic structure diagram of the door limiter anti-loosening device provided by the embodiment of the present application Figure 2 ;

[0035] Figure 4 It is a schematic structure diagram of the steel pipe in the door limiter anti-loosening device provided by the embodiment of the present application Figure 1 ;

[0036] Figure 5Structural schematic of the steel pipe in the door limiter anti-loosening device provided by the embodiment of the present application Figure 2 ;

[0037] Figure 6 Structural schematic of the door limiter anti-loosening device provided by the embodiment of the present application Figure 3 ;

[0038] Figure 7 Structural schematic of the door limiter anti-loosening device provided by the embodiment of the present application Figure 4 ;

[0039] Figure 8 Structural schematic of the door limiter anti-loosening device provided by the embodiment of the present application Figure 5 ;

[0040] Figure 9 Structural schematic of the door limiter anti-loosening device provided by the embodiment of the present application Figure 6 。

[0041] Description of reference numerals:

[0042] 100 - Door limiter anti-loosening device;

[0043] 110 - Spring;

[0044] 1101 - Ring;

[0045] 1102 - First hook;

[0046] 200 - Door;

[0047] 210 - Connecting wire;

[0048] 2101 - Second hook;

[0049] 2102 - Third hook;

[0050] 300 - Bolt;

[0051] 310 - Steel pipe;

[0052] 3101 - Groove;

[0053] 400 - Door limiter;

[0054] 410 - Pull ring;

[0055] 500 - Gasket;

[0056] 600 - Alarm;

[0057] 6001 - Tension sensor;

[0058] 60011 - Bolt hole;

[0059] 6002 - Signal lamp;

[0060] 6003 - Buzzer. Detailed implementation manners

[0061] Here, the exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and equipment consistent with some aspects of the present application as detailed in the appended claims.

[0062] In the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same items or similar items with basically the same functions and roles. For example, the first chip and the second chip are only used to distinguish different chips, and do not limit their sequence. Those skilled in the art can understand that the terms "first", "second", etc. do not limit the quantity and execution order, and the terms "first", "second", etc. do not necessarily limit being different. It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, using words such as "exemplary" or "for example" aims to present relevant concepts in a specific manner. In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more.

[0063] It should be noted that "when... " in the embodiments of the present application can be at the instant when a certain situation occurs, or within a period of time after a certain situation occurs. The embodiments of the present application do not make specific limitations on this. In addition, the switching device for accessing the network provided in the embodiments of the present application is only an example, and the switching device for accessing the network may also include more or less content.

[0064] For the convenience of clearly describing the technical solutions of the embodiments of the present application, the following briefly introduces some terms and technologies involved in the embodiments of the present application:

[0065] Overhead crane: It refers to a bridge-type crane running on an elevated track, mainly composed of a trolley, a crab and an electrical system, and is used for hoisting and transporting heavy objects.

[0066] Overhead crane limiter: It refers to an electrical device installed on an overhead crane. Its main function is to control the travel range of the overhead crane to prevent accidents such as over-limit travel and collisions. The overhead crane limiter controls the movement of the crane through electrical technology to ensure that the travel range of the crane is within a reasonable range.

[0067] Elastic element: It refers to an element in the system that bears and transmits load forces and has the ability to mitigate shock. According to the materials selected, it can be divided into two major categories: metal and non-metal. Common types include leaf springs, helical springs, torsion bar springs, etc. The functions of elastic elements are shock buffering, energy storage, guiding, etc.

[0068] Anti-loosening device: It refers to a device that prevents loosening and is widely used in various machinery, equipment, and building structures.

[0069] Tension sensor: It refers to an instrument used to measure the magnitude of the tension value of an elastic element.

[0070] Here, exemplary embodiments will be described in detail, and their examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0071] The technical solution of the present application will be described in detail below with specific embodiments. These several specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0072] To clearly understand the technical solution of the present application, the solutions of the prior art will be introduced in detail first. An overhead crane is a bridge-type crane that runs on an elevated track and is used for loading, unloading, handling, and stacking various materials and equipment. The limiter is an important part of the overhead crane. It is a safety device to protect the overhead crane itself, users, and any person and object within the operating range of the overhead crane. It is installed on the door frame of the overhead crane. When the door is closed, the contacts of the limiter are closed, and the control circuit of the overhead crane is turned on; when the door is opened, the contacts of the limiter are opened, and thus the control circuit of the overhead crane is disconnected. During the operation of the overhead crane, in order to keep the control circuit of the overhead crane continuously turned on, it is necessary for the contacts of the limiter to always remain closed. For this purpose, a bolt is set on the door to keep the door in a closed state all the time, and thus the limiter on the door is always kept turned on.

[0073] However, when using a bolt to ensure the closing of the overhead crane door, the bolt is opened and closed several times a day, resulting in wear and gaps in its contact part. In addition, since the track is not absolutely straight during the normal operation of the overhead crane, the overhead crane will vibrate, causing the bolt to become loose and the limit switch to malfunction. When the limit switch suddenly disconnects during the normal operation of the overhead crane, due to the interlocking of the control circuit, the entire overhead crane will lose power. If the overhead crane is in a loaded state at this time, there is a high probability of the overhead crane slipping hook, which will pose a great threat to the safety of people and equipment within the operating range of the overhead crane, leading to major safety accidents and major safety hazards. Therefore, the current door limit switch has problems of poor contact caused by external factors and intermittent operation caused by poor contact.

[0074] Therefore, in view of the problems of poor contact caused by external factors and intermittent operation caused by poor contact in the existing door limit switch, it is found in the research that to solve this problem, a door limit switch anti-loosening device that can always keep the door limit switch in good contact needs to be designed: ① The loosening distance generated by the bolt on the door is not fixed. The loosening distance may be 5 cm or 6 cm. Therefore, an elastic element needs to be set in the door limit switch anti-loosening device to adapt to different loosening distances. ② Corresponding structures need to be set on the elastic element to achieve a tight connection between the elastic element and other elements. ③ To prevent other elements from damaging the elastic element during use, a protective element needs to be set for the elastic element. ④ Each elastic element has a range of forces that it can withstand. When the force received by the elastic element exceeds the upper limit of the force it can withstand, the elastic element may be damaged. Therefore, an element that can detect how much force the elastic element withstands needs to be set. ⑤ When the elastic element is damaged due to the force received exceeding the upper limit of the force it can withstand, an alarm signal needs to be sent to the operator in a timely manner. Therefore, an element for sending an alarm signal needs to be set.

[0075] Specifically:

[0076] Set a spring in the door limit switch anti-loosening device, and set hooks or rings at both ends of the spring. Use the hooks or rings to connect the spring with other elements, and connect the door and the fixed point outside the door through the spring. To protect the spring, sleeve a steel pipe outside the spring. Connect the spring with a sensor to monitor the tension of the spring, and connect the sensor with a light bulb or a buzzer. When the tension of the spring exceeds the upper limit of the spring tension, an alarm signal is sent through the light bulb or the buzzer.

[0077] The anti-loosening device for a door limiter according to an embodiment of the present application connects the door and a fixed point outside the vehicle through a spring. When the door cannot be fully closed due to vibration, the spring will pull the door tightly to make the door fully closed, and at the same time make the limiter on the door also fully closed, solving the problems of poor contact of the door limiter caused by external factors and intermittent operation caused by poor contact.

[0078] Based on the above creative discovery, the technical solution of the present application is proposed.

[0079] The embodiments of the present application will be introduced below with reference to the accompanying drawings of the specification.

[0080] Figure 1 It is a schematic diagram of the system architecture of the anti-loosening device for a door limiter provided by an embodiment of the present application. It should be noted that Figure 1 The figure shown is only an example of the system architecture to which the embodiments of the present application can be applied to help those skilled in the art understand the technical content of the present application, but it does not mean that the embodiments of the present application cannot be used in other devices, systems, environments or scenarios.

[0081] As Figure 1 shown, where 100 is the anti-loosening device for a door limiter, 200 is the door, 300 is the bolt, and 400 is the door limiter. The door 200 is kept in a closed state through the bolt 300. When the door 200 is closed, the door limiter 400 is closed. One end of the anti-loosening device 100 for a door limiter is connected to the door 200, and the other end is connected to a fixed point outside the door 200. When the door 200 is not fully closed, resulting in poor contact of the door limiter 400, the anti-loosening device 100 for a door limiter will pull the door 200 tightly to make the door 200 fully closed, thereby making the contact of the door limiter 400 good.

[0082] Figure 2 It is a schematic structure of the anti-loosening device for a door limiter provided by an embodiment of the present application Figure 1 . As Figure 2 shown, in this embodiment, the anti-loosening device for a door limiter includes: a spring 110 and a connecting line 210.

[0083] Specifically, the spring 110 is used to provide a pulling force, and the pulling force helps to prevent the door limiter from loosening due to vibration or external force. The connecting line 210 is used to transmit the pulling force of the spring 110 to the first fixed point, thereby forming a stable pulling structure, and jointly forming a stable pulling system with the second fixed point on the door, thereby effectively preventing poor contact of the door limiter.

[0084] One end of the spring 110 is provided with a ring 1101, and the other end of the spring 110 is provided with a first hook 1102.

[0085] Specifically, the circular ring 1101 is an annular structure designed at one end of the spring 110. Its main purpose is to serve as a connection point and connect with the second hook 2101 of the connecting line 210. The first hook 1102 is a hook structure designed at the other end of the spring 110. Its main purpose is to hang on the second fixed point on the car door when the car door is closed.

[0086] One end of the connecting line 210 is provided with a second hook 2101, and the other end of the connecting line 210 is provided with a third hook 2102.

[0087] Specifically, the second hook 2101 is a hook structure designed at one end of the connecting line 210. Its main purpose is to hang inside the circular ring 1101 of the spring 110. The third hook 2102 is a hook structure designed at the other end of the connecting line 210. Its main purpose is to hang on the first fixed point outside the car door when the car door is closed.

[0088] The second hook 2101 hangs inside the circular ring 1101.

[0089] Specifically, the second hook 2101 hanging inside the circular ring 1101 is to achieve a firm connection between the spring 110 and the connecting line 210.

[0090] When the car door is closed, the third hook 2102 hangs on the first fixed point outside the car door, and the first hook 1102 hangs on the second fixed point on the car door.

[0091] Specifically, the third hook 2102 hanging on the first fixed point outside the car door provides an outward pulling force point for the car door, which helps prevent the car door from accidentally opening due to vibration or external force during driving. At the same time, the first hook 1102 hanging on the second fixed point on the car door transmits the pulling force of the spring 110 to the car door, balancing the pulling force generated by the third hook 2102, thus keeping the car door closed.

[0092] When the car door is closed, the spring 110 and the connecting line 210 are used to jointly tighten the car door through the first fixed point to avoid poor contact of the car door limiter.

[0093] A door limiter anti-loosening device provided in this embodiment is composed of a spring and a connecting wire. The spring and the connecting wire are connected to the door and the fixed points outside the door through a hook structure to form a stable tension system. When the door is closed, the door limiter anti-loosening device utilizes the combined action of the spring and the connecting wire to tighten the door through the fixed points outside the door, preventing the problem of poor contact of the door limiter caused by the inability of the door to close completely, and achieving the following technical effects: Through the dual action of the spring and the connecting wire, it ensures that the door can maintain a tight and stable connection in the closed state, avoiding the problems that the door cannot close completely due to vibration, and further causing poor contact of the door limiter and intermittent working problems.

[0094] Figure 3 Structural schematic of the door limiter anti-loosening device provided in the embodiment of the present application Figure 2 As Figure 3 shown, on the basis of the Figure 2 embodiment, the door limiter anti-loosening device is described in detail.

[0095] The door limiter anti-loosening device further includes: a steel pipe 310 and a pull ring 410.

[0096] Specifically, the steel pipe 310 is used to protect the spring 110. When the spring 110 is subjected to external force impacts, it may be deformed, broken or damaged. Therefore, by sleeving the steel pipe 310 outside the spring 110, the spring 110 can be effectively protected from external factors. The pull ring 410 is used to provide a convenient handle for operation. During the installation, debugging or maintenance of the door limiter anti-loosening device, sometimes it is necessary to manually operate components such as the spring 110 or the connecting wire 210. At this time, if there is no suitable handle or operating point, the operation difficulty may be increased. The setting of the pull ring 410 provides a convenient, safe and easy-to-operate handle for users, enabling users to complete relevant operations more easily.

[0097] The steel pipe 310 is sleeved on the spring 110, and the steel pipe 310 is used to protect the spring 110.

[0098] Specifically, the steel pipe 310 is designed as a hollow tubular structure, and its inner diameter is slightly larger than the outer diameter of the spring 110, so that the spring 110 can be easily inserted into it. During the actual assembly process, first insert one end of the spring 110 into one end of the steel pipe 310, and then slowly and steadily push the entire spring 110 into the interior of the steel pipe 310 until the other end of the spring 110 also completely enters the steel pipe 310.

[0099] The pull ring 410 is arranged on the steel pipe 310, and the pull ring 410 is used to provide a convenient handle for operation.

[0100] Specifically, when the pull ring 410 is set on the steel pipe 310, first determine the installation position of the pull ring 410. This position should be convenient for users to operate and will not affect the protective effect of the steel pipe 310 on the spring 110. Then, the pull ring 410 can be fixed on the steel pipe 310 by welding, threaded connection, snap fixation or other appropriate mechanical connection methods.

[0101] The technical effect of this embodiment is that by sleeving the steel pipe on the spring, it provides additional protection for the spring and extends the service life of the spring. The pull ring is set on the steel pipe, providing a convenient handle for users, making it more convenient when installing, adjusting or repairing the anti-loosening device of the door limiter.

[0102] Figure 4 Structural schematic of the steel pipe in the anti-loosening device of the door limiter provided by the embodiment of the present application Figure 1 As Figure 4 shown, on the basis of the Figure 2 and Figure 3 embodiments, the anti-loosening device of the door limiter will be described in detail.

[0103] The steel pipe 310 is provided with a groove 3101, and the pull ring 410 is used to connect with the steel pipe 310 through the groove 3101.

[0104] Specifically, the groove 3101 provided on the steel pipe 310 is used to ensure a stable connection between the pull ring 410 and the steel pipe 310. The groove 3101 provides a specific path or space, enabling the pull ring 410 to be precisely installed on the steel pipe and not easily fall off or become loose.

[0105] The pull ring 410 is also used to move on the steel pipe 310 through the groove 3101.

[0106] Specifically, the pull ring 410 moves on the steel pipe 310 through the groove 3101, and users can easily adjust the position of the pull ring 410 to meet different installation requirements or operation requirements.

[0107] The steel pipe 310 is provided with a lock 3102, and the lock 3102 is used to fix the pull ring 410 after the pull ring 410 reaches the target position.

[0108] Specifically, when the pull ring 410 moves to the required target position, the lock 3102 can be used to fix the pull ring 410 to prevent it from moving or falling off under non-human operation.

[0109] The technical effect of this embodiment is that by setting grooves on the steel pipe and allowing the pull ring to move within the grooves, users can easily adjust the position of the pull ring. This design makes the anti-loosening device of the car door limiter more flexible during installation, debugging, or maintenance; the lock catch can firmly fix the position of the pull ring on the steel pipe, preventing the pull ring from accidentally moving due to vibration, wind force, or other external factors.

[0110] Figure 5 Structural schematic of the steel pipe in the anti-loosening device of the car door limiter provided by the embodiment of the present application Figure 2 As Figure 5 shown, on the basis of the Figures 2 to 4 embodiment, the anti-loosening device of the car door limiter will be described in detail.

[0111] The anti-loosening device of the car door limiter further includes: a gasket 500.

[0112] Specifically, the gasket 500 is usually made of materials with good wear resistance and lubrication performance, such as rubber, plastic, or certain metal alloys. These materials can provide good friction buffering and lubrication effects, protecting the spring 110 and the steel pipe 310 from unnecessary damage.

[0113] The gasket 500 is arranged on the inner side of the steel pipe 310, and the gasket 500 is used to reduce the friction between the spring 110 and the steel pipe 310.

[0114] Specifically, the gasket 500 is used to reduce the friction between the spring 110 and the steel pipe 310. When the spring 110 is sleeved inside the steel pipe 310, due to the elasticity and vibration of the spring 110, and the contact area between the two may not be completely uniform, it may cause unnecessary friction during the opening and closing of the car door. This friction will reduce the service life of the spring 110 and the steel pipe 310. By arranging the gasket 500 on the inner side of the steel pipe 310, the contact area between the two can be effectively reduced, thereby reducing wear.

[0115] The technical effect of this embodiment is that the gasket is arranged on the inner side of the steel pipe, which can reduce the wear of the spring and the steel pipe, and helps to extend the service life of the spring and the steel pipe.

[0116] Figure 6 Structural schematic of the anti-loosening device of the car door limiter provided by the embodiment of the present application Figure 3 As Figure 6 shown, on the basis of the Figures 2 to 5 embodiment, the anti-loosening device of the car door limiter will be described in detail.

[0117] The anti-loosening device of the car door limiter further includes: an alarm 600.

[0118] Specifically, the alarm 600 is used to detect the tension of the spring 110. When the tension of the spring 110 exceeds its preset upper limit of tension, the alarm 600 will trigger an alarm signal to alert the user.

[0119] One end of the alarm 600 is connected to the first hook 1102, and the other end of the alarm 600 is connected to the second fixed point. The alarm 600 is used to detect the tension of the spring 110 and issue an alarm when the tension of the spring 110 is greater than the upper limit of the tension of the spring 110.

[0120] Specifically, by connecting one end of the alarm 600 to the first hook 1102 and the other end to the second fixed point, the alarm 600 can monitor the tension state of the spring 110. When the door is subjected to abnormal external force or for other reasons, the tension of the spring 110 increases sharply and exceeds its upper limit of tension, the alarm 600 will sense this change and issue an alarm signal.

[0121] The technical effect of this embodiment is that through the monitoring of the alarm, the user can know in advance whether the working state of the door limiter is normal, so as to take timely measures for maintenance and upkeep.

[0122] Figure 7 Structural schematic of the door limiter anti-loosening device provided by the embodiment of the present application Figure 4 As Figure 7 shown, on the basis of the Figures 2 to 6 embodiment, the door limiter anti-loosening device is described in detail.

[0123] The alarm 600 includes: a tension sensor 6001 and a signal lamp 6002.

[0124] Specifically, the tension sensor 6001 is used to detect the tension of the spring 110. It can monitor the force state of the spring during operation in real time. The signal lamp 6002 is used to light up after receiving the alarm signal sent by the tension sensor 6001 to alert the user or maintenance personnel.

[0125] One end of the tension sensor 6001 is connected to the first hook 1102, and the other end of the tension sensor 6001 is connected to the second fixed point. The tension sensor 6001 is used to detect the tension of the spring 110.

[0126] Specifically, by connecting one end of the tension sensor 6001 to the first hook 1102 and the other end to the second fixed point, the tension sensor 6001 can accurately measure the tension change of the spring 110.

[0127] The tension sensor 6001 is also connected to the signal lamp 6002, and the tension sensor 6001 is also used to send an alarm signal to the signal lamp 6002 when the tension of the spring 110 is greater than the upper limit of the tension of the spring 110.

[0128] Specifically, the connection between the tension sensor 6001 and the signal lamp 6002 illustrates the communication mechanism between them. When the tension of the spring exceeds the safe range, the tension sensor 6001 will send an alarm signal to the signal lamp 6002 to trigger an alarm.

[0129] The signal lamp 6002 is used to light up after receiving the alarm signal sent by the tension sensor 6001.

[0130] Specifically, the purpose of the signal lamp 6002 to light up after receiving the alarm signal sent by the tension sensor 6001 is to provide an intuitive visual alarm to alert users or maintenance personnel of potential safety hazards. This immediate feedback mechanism helps to quickly detect and handle potential problems, thus avoiding further damage or dangerous situations.

[0131] The technical effect of this embodiment is that the tension sensor can monitor the tension state of the spring in real time to ensure that the spring always remains within the preset safe range during operation. Once the tension of the spring exceeds the set upper limit value, the sensor will immediately send an alarm signal, and the signal lamp will light up after receiving the alarm signal, providing an intuitive visual prompt for users and facilitating subsequent maintenance and repair work.

[0132] Figure 8 Structural schematic of the anti-loosening device for the car door limiter provided by the embodiment of the present application Figure 5 As Figure 8 shown, on the basis of the Figures 2 to 7 embodiment, the anti-loosening device for the car door limiter is described in detail.

[0133] The alarm 600 further includes: a buzzer 6003.

[0134] Specifically, the buzzer 6003 is used to give an audible alarm when the tension of the spring 110 of the anti-loosening device for the car door limiter exceeds its upper limit of tension. This audible alarm is an additional warning method to alert users to potential problems or necessary maintenance of the anti-loosening device for the car door limiter.

[0135] The buzzer 6003 is connected to the tension sensor 6001 and is used to sound after receiving the alarm signal sent by the tension sensor 6001.

[0136] Specifically, when the tension sensor 6001 detects that the tension of the spring 110 exceeds its set upper limit of tension, it sends an alarm signal to the buzzer 6003. After receiving this alarm signal, the buzzer 6003 emits a sound to remind the relevant personnel in the form of sound.

[0137] The technical effect of this embodiment is that on the basis of the visual alarm of the original signal lamp, the sound alarm of the buzzer is added. This dual-alarm method can more effectively remind the user to pay attention to the status of the door limiter anti-loosening device.

[0138] Figure 9 Structural schematic of the door limiter anti-loosening device provided by the embodiment of the present application Figure 6 As Figure 9 shown, on the basis of the Figures 2 to 8 embodiment, the door limiter anti-loosening device is described in detail.

[0139] A bolt hole 60011 is provided at the other end of the tension sensor 6001, and the bolt hole 60011 is used to connect the tension sensor 6001 and the second fixed point.

[0140] Specifically, the bolt hole 60011 provides a mechanical connection method for firmly connecting the tension sensor 6001 to the second fixed point. This connection method ensures that the tension sensor 6001 can stably measure the tension of the spring 110 without generating errors due to insecure connection.

[0141] The technical effect of this embodiment is that by setting a bolt hole at the other end of the tension sensor, the tension sensor can be firmly connected to the second fixed point, improving work efficiency and maintenance convenience.

[0142] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A door limiter anti-loosening device, characterized in that The door limiter is installed on the door. Then, the anti-loosening device of the door limiter includes: a spring (110) and a connecting wire (210). One end of the spring (110) is provided with a ring (1101), and the other end of the spring (110) is provided with a first hook (1102). One end of the connecting wire (210) is provided with a second hook (2101), and the other end of the connecting wire (210) is provided with a third hook (2102). The second hook (2101) is hung inside the ring (1101). When the door is closed, the third hook (2102) is hung on a first fixed point outside the door, and the first hook (1102) is hung on a second fixed point on the door. When the door is closed, the spring (110) and the connecting wire (210) are used to jointly tighten the door through the first fixed point to prevent poor contact of the door limiter.

2. The anti-loosening device for a car door limiter according to claim 1, wherein, It further includes: a steel pipe (310) and a pull ring (410). The steel pipe (310) is sleeved on the spring (110), and the steel pipe (310) is used to protect the spring (110). The pull ring (410) is arranged on the steel pipe (310), and the pull ring (410) is used to provide a convenient operating handle.

3. The anti-loosening device for a door limiter according to claim 2, characterized in that, The steel pipe (310) is provided with a groove (3101), and the pull ring (410) is used to be connected with the steel pipe (310) through the groove (3101). The pull ring (410) is also used to move on the steel pipe (310) through the groove (3101).

4. The anti-loosening device for a door limiter according to claim 3, characterized in that, The steel pipe (310) is provided with a lock (3102), and the lock (3102) is used to fix the pull ring (410) after the pull ring (410) reaches the target position.

5. The anti-loosening device for a car door limiter according to claim 2, characterized in that, It further includes: a gasket (500). The gasket (500) is arranged inside the steel pipe (310), and the gasket (500) is used to reduce the friction between the spring (110) and the steel pipe (310).

6. The anti-loosening device for a car door limiter according to any one of claims 1 to 3, characterized in that, The shapes of the first hook (1102), the second hook (2101) and the third hook (2102) are eyelet-shaped.

7. The anti-loosening device for a door limiter according to claim 1, characterized in that, It further includes: an alarm (600). One end of the alarm (600) is connected to the first hook (1102), and the other end of the alarm (600) is connected to the second fixed point. The alarm (600) is used to detect the tension of the spring (110) and give an alarm when the tension of the spring (110) is greater than the upper limit of the tension of the spring (110).

8. The anti-loosening device for a door limiter according to claim 7, characterized in that, The alarm (600) includes: a tension sensor (6001) and a signal lamp (6002). One end of the tension sensor (6001) is connected to the first hook (1102), and the other end of the tension sensor (6001) is connected to the second fixed point. The tension sensor (6001) is used to detect the tension of the spring (110). The tension sensor (6001) is also connected to the signal lamp (6002), and the tension sensor (6001) is further configured to send an alarm signal to the signal lamp (6002) when the tension of the spring (110) is greater than the upper limit of the tension of the spring (110); The signal lamp (6002) is configured to light up after receiving the alarm signal sent by the tension sensor (6001).

9. The anti-loosening device for a vehicle door limiter according to claim 8, characterized in that, The alarm (600) further includes: a buzzer (6003); The buzzer (6003) is connected to the tension sensor (6001) and is configured to sound after receiving the alarm signal sent by the tension sensor (6001).

10. The anti-loosening device for a car door limiter according to claim 8, characterized in that, A bolt hole (60011) is provided at the other end of the tension sensor (6001), and the bolt hole (60011) is used to connect the tension sensor (6001) and the second fixed point.

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