Elastic operating head, door control equipment and safety door contact switch

Abstract

The utility model relates to the field of elevator safety control, in particular to an elastic operating head, door control equipment and a safety door contact switch. The elastic operating head comprises a contact and a base, and further comprises a fork-shaped elastic sheet. The fork-shaped elastic sheet is arranged on the base; and the fork-shaped elastic sheet is used for supporting the contact. According to the scheme, through the arrangement of the fork-shaped elastic sheet in the elastic operating head, the elastic force of the elastic sheet is convenient to adjust, the material consumption of the elastic sheet can be reduced, the stability of the elastic sheet is improved, certain elastic offset can be accommodated when the operating head is inserted into the door contact switch, the contact stability is enhanced, the problem of poor contact is improved, and the radial effective stroke of the operating head is increased; the cost is reduced; and the overall reliability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of elevator safety control, and in particular to an elastic operating head, a door control device and a safety door contact switch. BACKGROUND

[0002] The operating head and the door contact switch are commonly used in the car door and landing door mechanisms of elevators. The door contact switch cooperates with the operating head of the elevator door machine. With the opening and closing of the elevator door, the operating head controls the disconnection and conduction of the door contact switch.

[0003] Currently, most elevator door machines are equipped with rigid operating heads. The rigid operating head is a structure without movable parts and does not have execution force. The rigid operating head cannot achieve the buffering effect in the size range. The rigid operating head completely relies on the structure of the door contact switch to cooperate with the action and tolerance conditions of the elevator door machine.

[0004] However, in the long-term and frequent use of elevators, due to the repeated action of the door machine system and possible vibrations, the cooperation between the existing rigid operating head and the door contact switch is prone to problems.

[0005] On the one hand, when the elevator door machine is running, due to different working conditions such as acceleration and deceleration processes, a certain impact force will be generated. The rigid operating head cannot buffer these impact forces, which makes the precise structure inside the door contact switch vulnerable to damage, for example, it can cause premature wear and deformation of the contact, and thus affect its accurate detection of the state of the elevator door, such as misjudging whether the door is completely closed or opened.

[0006] On the other hand, over time and with changes in the use environment, the tolerance of the elevator door machine itself can change slightly. The rigid operating head lacks the ability to adaptively adjust and cannot compensate for this tolerance change, which can lead to a decrease in the cooperation precision between the rigid operating head and the door contact switch. In extreme cases, the rigid operating head and the door contact switch may not be in effective contact, which can cause the elevator door control system to lose the ability to monitor the position of the door, seriously threatening the safe operation of the elevator. For example, the elevator control system may mistakenly believe that the door has not been completely closed, thereby preventing the elevator from running normally, reducing the efficiency of the elevator. Frequent misjudgments can also cause the elevator control system to frequently alarm, causing unnecessary troubleshooting work burden for maintenance personnel.

[0007] Furthermore, when the door contact switch is used as a mechanical limit illegally, the hard operating head will accelerate the damage of the door contact switch due to the fact that it is not designed to bear the strong impact force and stress caused by the mechanical limit. The additional impact force caused by the hard operating head will deform the fine structure inside the switch and further deteriorate the electrical contact condition every time the elevator door is closed to the end of the stroke. In the long run, not only will the door contact switch fail frequently, increasing the maintenance and replacement costs, but in extreme cases, the damage of the switch may cause the elevator door to lose effective control, resulting in the safety hazard of the elevator door unable to close normally or open abnormally, seriously threatening the safety of passengers.

[0008] Therefore, in order to improve the reliability and stability of the elevator door control system, it is necessary to improve the design of the existing operating head. SUMMARY

[0009] In order to solve at least one of the above technical problems, the present disclosure provides an elastic operating head, a door control device and a safety door contact switch.

[0010] According to an aspect of the present disclosure, an elastic operating head is provided, comprising a contact head and a base, characterized in that further comprising: a fork-shaped elastic sheet;

[0011] The fork-shaped elastic sheet is arranged on the base;

[0012] The fork-shaped elastic sheet supports the contact head.

[0013] Optionally, the fork-shaped elastic sheet comprises a foot connecting portion and a foot structure.

[0014] Optionally, the number of the foot structure is 1, and the foot structure comprises a first foot.

[0015] Optionally, the number of the foot structure is 2 or more, and the foot structure comprises at least a first foot and a second foot.

[0016] Optionally, at least two of the foot structures are arranged in cross.

[0017] Optionally, at least two of the foot structures are arranged in parallel.

[0018] Optionally, the foot structure extends from the foot connecting portion; and a connection area between the foot structure and the foot connecting portion forms a first bending portion.

[0019] Optionally, the free end of the foot structure has a second bending portion.

[0020] Optionally, the fork-shaped elastic sheet is made of a piece of metal sheet.

[0021] Optionally, the foot connecting part is provided with a mounting hole and / or a mounting slot.

[0022] Optionally, the fork-shaped elastic sheet is arranged on the base in any one of the following manners: insertion, clamping, screwing, riveting, gluing, and welding.

[0023] Optionally, the contact head comprises a contact head rod and a contact head base.

[0024] The fork-shaped elastic sheet has a contact surface that is shaped to fit the contact head base.

[0025] Optionally, the fork-shaped elastic sheet supports the contact head to have a minimum radial movement distance of 0-4 mm and a maximum radial movement distance of 0-7 mm.

[0026] Optionally, the contact head guiding and positioning structure further comprises a guiding surface.

[0027] The contact head guiding and positioning structure is arranged on the base.

[0028] Optionally, the contact head guiding and positioning structure comprises a guiding surface.

[0029] The guiding surface is used to accommodate the movement of the contact head.

[0030] Optionally, the contact head guiding and positioning structure accommodates the contact head to have a minimum lateral movement distance of 0-0.5 mm and a maximum lateral movement distance of 0-4 mm.

[0031] Optionally, the base is provided with an elastic sheet cover plate for mounting the fork-shaped elastic sheet.

[0032] The elastic sheet cover plate is mounted on the base in any one of the following manners: a clamping slot, a mounting seat, and a mounting hole.

[0033] According to another aspect of the present disclosure, a door control device is provided, comprising the elastic operation head described above.

[0034] According to still another aspect of the present disclosure, a safety door is provided, characterized in that it comprises the door control device described above.

[0035] Advantages

[0036] The elastic operation head provided by the embodiments of the present disclosure has the following advantages:

[0037] The improved elastic operation head has the following significant advantages.

[0038] (1) The elastic sheet elastic force is easy to adjust, the material consumption of the elastic sheet is reduced, and the manufacturing process is simplified

[0039] The improved elastic operating head innovatively designs the elastic sheet into a fork structure. The fork structure of the elastic sheet reduces the material selection limitations of the elastic sheet. The fork design can use materials of different thicknesses and strengths to achieve the required elasticity and compression stroke. When adjusting the elasticity of the elastic sheet, only the geometric characteristics of the foot structure of the elastic sheet need to be adjusted. Thus, the manufacturing process is simplified.

[0040] This unique fork design allows the entire elastic sheet to be manufactured from a single sheet of metal. From the perspective of material utilization, traditional elastic sheet designs require multiple pieces of material or more complex structures to achieve the same function, which often leads to material waste. This fork elastic sheet structure only uses a single sheet of metal, greatly reducing the material consumption of the elastic sheet. In large-scale elevator safety control device production, the reduction in material consumption means a significant reduction in production costs. For elevator manufacturers, the economic benefits of the enterprise can be improved while ensuring product quality and safety.

[0041] The manufacturing process of the fork elastic sheet is more simple and efficient. This not only reduces the labor and time costs in the manufacturing process, but also reduces the quality risks that may be caused by complex processes. At the same time, the simple manufacturing process also helps to improve the consistency and stability of production, thereby improving the reliability of the entire elevator safety control device.

[0042] (II) Increase the stability of the elastic sheet

[0043] The setting of multiple feet significantly improves the stability of the fork elastic sheet. When the fork elastic sheet is in a working state, such as in the operating scenario of the elevator safety control device, the elastic sheet needs to maintain a stable posture on the plane it contacts. The fork elastic sheet structure with multiple feet is like a carefully constructed stable support. From the perspective of mechanics, the setting of multiple feet increases the number of contact points between the elastic sheet and the contact plane. In physics, more contact points mean that forces are more evenly distributed. When external forces act on the elastic sheet, such as shocks during elevator operation, device start-up or stop, these forces can be dispersed through multiple contact points, rather than concentrated on a single point or area. This is like placing a heavy object on multiple support points, which can more effectively bear the weight of the object and maintain balance than a single support point.

[0044] The fork elastic sheet with multiple feet can maintain a stable working state in these complex working conditions, ensuring that the elevator safety control device can accurately perform its safety protection functions, thereby protecting the lives of passengers in the elevator and the normal operation of the elevator equipment itself. This improvement in stability also reduces the risk of device failure caused by the elastic sheet shifting or moving, further improving the overall safety and stability of the elevator.

[0045] (Three) Enhancing the stability of the contact

[0046] By optimizing the internal structure of the elastic operating head, it can accommodate a certain elastic offset when the operating head is fully inserted into the switch body. This flexible connection can adaptively adjust to ensure that the operating head and the switch always maintain stable and reliable contact. In this way, the phenomenon of poor electrical contact caused by insufficient mechanical movement redundancy is effectively eliminated, greatly improving the accuracy of signal transmission.

[0047] The improved solution uses elastic materials to complete the contact design. These designs enable the elastic operating head to maintain good contact performance with the door contact switch for a long time in various complex working environments, reducing failures caused by poor contact.

[0048] (Three) Increase the radial effective stroke of the operating head

[0049] By redesigning the structure of the elastic operating head, it will not be affected by the impact force and stress generated by mechanical limiting when the elastic operating head is in normal operation. This fundamentally improves the problem when it is mistakenly used as a mechanical limit, improving the reliability of the entire door control device and the redundancy of illegal use.

[0050] (Four) Significant cost reduction

[0051] Traditional solutions may require complex mechanical structure adjustments or use of high-cost special materials to solve the above problems. Our solution creatively uses elastic components. These elastic components are usually made of common and low-cost materials. They can be manufactured from a piece of metal sheet. They are widely supplied in the market, with low procurement cost.

[0052] In addition, the introduction of elastic component design greatly simplifies the production process. Reduces labor costs and time costs in the production process, and reduces dependence on high-end production equipment.

[0053] Further, the elastic component structure in the new solution is simple, and its maintenance and replacement operation when it fails also becomes extremely easy. Maintenance personnel do not need to have high professional skills or use special tools to complete the maintenance work, which reduces maintenance costs.

[0054] (Five) Improve overall performance and reliability

[0055] Due to the solution of the problems of poor contact with the operating head and illegal mechanical limiting use, the overall wear and damage risk of the elastic operating head and the door contact switch is greatly reduced. The improved design can maintain stable performance during the long-term frequent operation of the elevator, reduce the frequency of maintenance and replacement, and effectively prolong the service life of the elastic operating head.

[0056] The stable and reliable elastic operating head ensures that the elevator control system can accurately obtain the state information of the elevator door, avoiding the interruption or abnormality of the elevator operation caused by false signals. This makes the elevator run more efficiently, reduces passenger waiting time, and provides a safer ride environment for passengers, improving the performance and quality of the entire elevator system.

[0057] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present disclosure, nor to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0058] The accompanying drawings are used to better understand the present scheme and do not limit the present disclosure. Among them:

[0059] Figure 1 is an existing elastic operating head application scenario diagram;

[0060] Figure 2 is an elastic operating head application scenario diagram provided by an embodiment of the present disclosure;

[0061] Figure 3 is an overall structure diagram of an elastic operating head provided by an embodiment of the present disclosure;

[0062] Figure 4 is a top surface diagram of an elastic operating head provided by an embodiment of the present disclosure;

[0063] Figure 5 is a bottom surface diagram of an elastic operating head provided by an embodiment of the present disclosure;

[0064] Figure 6 is a structure diagram of a fork-shaped elastic sheet provided by an embodiment of the present disclosure.

[0065] The reference signs in the specific embodiments are as follows:

[0066] Operating head 1; door contact switch 2; contact 110; base 120; fork-shaped elastic sheet 130; support 140; contact guide positioning structure 140. The contact 110 has: 111; 112. The base 120 has: 121; 122; 123. The fork-shaped elastic sheet 130 has: foot connecting part 131; first foot 132; second foot 133. The foot connecting part 131 has: mounting hole 1311; mounting groove 1312. The first foot 132 has: first bending part 1321; second bending part 1322. The second foot 133 has: first bending part 1331; second bending part 1332. Specific embodiments

[0067] Exemplary embodiments of the present disclosure are described herein below with reference to the accompanying drawings, in which various details are set forth to facilitate an understanding of the embodiments of the present disclosure. However, it will be apparent to one of ordinary skill in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0068] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.

[0069] In the description of the embodiments of the present application, the term "at least one" refers to one or more, and "multiple" refers to two or more (including two).

[0070] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0071] Figure 1 An existing elastic operating head application scenario is shown.

[0072] The existing operating head 1 and the matching door contact switch 2 mainly work based on the principle of mechanical triggering and circuit on-off. In the elevator door system, it is usually installed on the car door or landing door related structure.

[0073] When the elevator door is in the closed state, the operating head 1 on the door body gradually approaches and contacts the door contact switch 2 with the movement of the door. The operating head 1 will exert a certain pressure on the door contact switch 2, causing the mechanical structure inside the switch to move. This mechanical movement will cause the conductive contacts inside the switch to approach and contact each other, thereby making the circuit conductive. After the circuit is conductive, an electrical signal indicating that the elevator door is closed is sent to the elevator control system, and after the elevator control system receives the signal, it confirms that the elevator door is in a safe closed state, allowing the elevator to continue to operate or perform the next operation, such as starting the elevator operation program or opening the door lock and other related safety mechanisms.

[0074] However, the elevator door machine will generate a certain impact force during operation due to different working conditions such as acceleration and deceleration process; over time and with changes in the use environment, the tolerance of the elevator door machine itself may change slightly; in addition, when the door contact switch is illegally used as a mechanical limit, the hard operating head will accelerate the damage of the door contact switch due to its not being specially designed to withstand the strong impact force and stress generated by the mechanical limit. The above situations can easily lead to the ineffective contact of the operating head 1 and the door contact switch 2, causing the elevator door control system to lose the monitoring ability of the door position. In extreme cases, the damage of the switch may cause the elevator door to lose effective control, resulting in the safety hazard of the elevator door unable to normally close or abnormally open.

[0075] When the elevator door needs to be opened, the operating head 1 gradually moves away from the door contact switch 2 as the door body moves. At this time, the mechanical reset device (such as a spring) inside the switch works to separate the conductive contacts and break the circuit. After receiving the signal of the elastic operating head being broken, the elevator control system knows that the elevator door is being opened, and accordingly adjusts the operation state and control logic of the elevator, such as pausing some operations related to the closed state of the door.

[0076] Figure 2 is a schematic diagram of an application scenario of the elastic operating head provided by the embodiment of the present disclosure.

[0077] The difference between the elastic operating head 1 and the existing operating head is that the elastic operating head 1 can provide a certain elastic offset through the built-in fork-shaped elastic sheet, thereby enhancing the stability of the contact and improving the poor contact problem when the operating head 1 is inserted into the door contact switch 2.

[0078] When the elevator door is in a closed state, the elastic operating head 1 on the door body gradually approaches and contacts the door contact switch 2 as the door moves. The elastic operating head 1 will exert a certain pressure on the door contact switch 2, causing the mechanical structure inside the switch to act. The design of the elastic operating head 1 enables it to maintain good contact performance with the door contact switch in various complex working environments for a long time. Thus, the circuit can be stably turned on. After the circuit is turned on, an electrical signal indicating that the elevator door has been closed will be sent to the elevator control system, and after receiving the signal, the elevator control system confirms that the elevator door is in a safe closed state, allowing the elevator to continue to operate or perform the next operation, such as starting the elevator operation program or opening the door lock and other related safety mechanisms.

[0079] When the elevator door needs to be opened, the elastic operating head 1 gradually moves away from the door contact switch 2 as the door body moves. At this time, the mechanical reset device (such as a spring) inside the switch works to separate the conductive contacts and break the circuit. After the elevator control system receives the signal that the elastic operating head is broken, it knows that the elevator door is being opened, and accordingly adjusts the operation state and control logic of the elevator, such as pausing certain operations related to the closed state of the door.

[0080] Figure 3 Figure 1 is a structural diagram of an elastic operating head according to an embodiment of the present disclosure.

[0081] As shown in Figure 3 , the elastic operating head 1 includes a contact head 110 and a base 120. The contact head 110 further includes a contact head rod 111 and a contact head seat 112.

[0082] In an embodiment, the contact head rod 111 and the contact head seat 112 are fixedly connected together, integrally forming the contact head 110, ensuring that the contact head rod 111 does not fall off the contact head seat 112.

[0083] In an embodiment, the contact head rod 111 is inserted into the contact head seat 112, and the rod body portion of the contact head rod 111 inside the contact head seat 112 is bent, so that the contact head rod 111 is not easily removed from the contact head seat 112.

[0084] As shown in Figure 3 , in an embodiment, the base 120 forms a base containing space, and the contact head seat 112 is located in the base containing space.

[0085] In an embodiment, the base containing space has an opening 121, so that the contact head rod 111 extends out of the opening 121, and the upper part of the contact head rod 111 is located in the external space of the base, so that when the contact head 110 contacts the door contact switch 120, the upper part of the contact head rod 111 can be inserted into the door contact switch 120 to conduct the circuit of the door contact switch 120.

[0086] The opening 121 through which the contact head rod 111 extends has a size smaller than that of the contact head seat 112, so that the contact head seat 112 cannot fall out of the opening, thus preventing the contact head 110 from falling off the base 120.

[0087] The contact head rod 111 can move radially back and forth along the direction from the inside of the opening to the outside of the opening under the limitation of the opening 121. Since the base also has a fork-shaped elastic piece 130, it also allows the contact head to move radially within a certain range, so that the opening 121 cooperates with the fork-shaped elastic piece 130 to allow the contact head 110 to move radially within a certain range.

[0088] Preferably, the radial movement range can be 0 to 4mm, 0 to 5mm, 0 to 6mm, or 0 to 7mm. It can also be 0 to any integer or real value of the radial movement range.

[0089] In one embodiment, the size of the opening 121 is slightly larger than the size of the contact rod 111, so that the contact rod 111 can move laterally in the plane where the opening 121 is located. That is, the contact 110 can move laterally within a certain range. Since the base also has a contact guide positioning structure 140, it can also allow the contact seat 112 to move laterally within a certain range, so the opening 121 cooperates with the contact guide positioning structure 140 to allow the contact 110 to move laterally within a certain range.

[0090] Preferably, the lateral movement range can be 0 to 0.5mm, 0 to 1mm, 0 to 1.5mm, 0 to 2mm, 0 to 2.5mm, 0 to 3mm, 0 to 3.5mm, or 0 to 4mm. It can also be 0 to any integer or real value of the lateral movement range.

[0091] In one embodiment, the base 120 forms a receiving space that also includes at least the fork-shaped spring 130.

[0092] The fork-shaped spring 130 is fixed at one end of the receiving space formed by the base 120 with a spring cover plate 122 that can fix the fork-shaped spring 130, and the opening 121 is located at the other end of the receiving space formed by the base 120. This fixing method allows the fork-shaped spring 130 to provide a spring force to the contact 110, so that the contact 110 can move radially in the opening.

[0093] The fork-shaped spring 130 is made of elastic material to produce elastic deformation when subjected to force, and returns to the original shape after the external force is removed, thereby achieving a specific elastic function.

[0094] The optional materials of the fork-shaped spring include, but are not limited to, stainless steel such as 304, 316, etc. Spring steel such as 65Mn, etc., which has a high elastic limit, fatigue limit and certain impact toughness.

[0095] This unique fork-shaped design allows the entire spring to be manufactured from a piece of metal sheet. This fork-shaped spring structure only uses a piece of metal sheet, greatly reducing the material consumption of the spring.

[0096] There are various ways to manufacture the fork-shaped spring 130. First, design drawing is made. According to the design size and shape of the fork-shaped spring, professional drawing software is used to accurately draw the drawing, and key dimensions and tolerance requirements are marked. Second, cutting and blanking are performed. Using numerical control punch, laser cutting machine or punch machine and other equipment, the metal sheet is cut into the general outline of the fork-shaped spring according to the design drawing, ensuring the accuracy of the cutting size and reducing the subsequent processing allowance. Third, stamping is performed. The cut metal sheet is placed in the stamping die, and the metal sheet is stamped into the final shape of the fork-shaped spring by the pressure machine, ensuring the accuracy and consistency of the fork-shaped structure. Finally, heat treatment is optionally performed. The fork-shaped spring after stamping is heat treated, such as quenching and tempering, to improve the hardness, elasticity and fatigue strength of the spring, and to meet the performance requirements in the elevator safety control device.

[0097] During the manufacturing process, the following matters need to be paid attention to. First, according to the design requirements and performance requirements of the fork-shaped spring 130, select the appropriate metal plate material, such as spring steel with good elasticity and strength, beryllium bronze, etc. The thickness of the selected metal plate needs to be accurately matched with the design thickness of the spring to ensure that no excessive thickness adjustment process is needed in the subsequent processing.

[0098] Second, after stamping, the initially formed fork-shaped spring 130 is bent. According to the designed bending angle and shape, the bending equipment is used to bend the foot structure (132 and 133) from the metal plate plane to the predetermined angle to form the three-dimensional structure required by the fork-shaped spring. When bending, the bending position and angle need to be accurately controlled to ensure that the relative position and angle between each foot structure of the fork-shaped spring 130 and the foot connecting part 131 meet the design requirements, and the fork-shaped spring can be smoothly inserted and fixed by the spring cover plate 122 during the later installation to complete the assembly of the product.

[0099] After the fork-shaped spring 130 is installed in the base 120, the fork-shaped spring 130 is inserted into the spring cover plate 122, or the fork-shaped spring 130 abuts against the spring cover plate 122. The spring cover plate 122 is installed on the base 120 by any of the following ways: clamping groove, mounting seat, mounting hole.

[0100] In one embodiment, the spring cover plate 122 can be integrated with the base 120. The advantage of one-piece molding is that the spring cover plate 122 is more firm and less likely to fall off.

[0101] The elastic sheet cover plate 122 can also be a separate component mounted on the base 120, for example, by means of a clamping groove, mounting seat, mounting hole, etc. The advantage of a separate component is that the fork-shaped elastic sheet 130 can be mounted in the base 120 first, and then the elastic sheet cover plate 122 can be assembled onto the base 120 to fix the fork-shaped elastic sheet 130. The installation is more convenient, and the maintenance and replacement are also more convenient.

[0102] The fork-shaped elastic sheet 130 is arranged on the base 120, that is, the connection mode of the fork-shaped elastic sheet 130 and the 122, including any one of the following: insertion, clamping, screwing, riveting, gluing, welding.

[0103] In an embodiment, the fork-shaped elastic sheet 130 is a metal material, for example, a stainless steel material after heat treatment; the elastic sheet cover plate 122 is a non-metal material. The fork-shaped elastic sheet 130 can be inserted into the elastic sheet cover plate 122 after heating, and a stable connection relationship is formed after cooling.

[0104] In an embodiment, the fork-shaped elastic sheet 130 and the elastic sheet cover plate 122 abut against each other, and the elastic sheet cover plate 122 can be a metal material.

[0105] In an embodiment, the elastic sheet cover plate 122 has a clamping groove that can just accommodate one end or both ends of the fork-shaped elastic sheet 130, and one end or both ends of the fork-shaped elastic sheet 130 are clamped in the clamping groove to form a stable connection relationship.

[0106] In other embodiments, the fork-shaped elastic sheet 130 is fixed to the elastic sheet cover plate 122 by screwing, riveting, gluing, welding, etc.

[0107] In an embodiment, the fork-shaped elastic sheet 130 is reinforced again by screwing, riveting, gluing, welding, etc. on the basis of insertion to form a more stable connection relationship.

[0108] In an embodiment, the fork-shaped elastic sheet 130 is reinforced again by screwing, riveting, gluing, welding, etc. on the basis of clamping to form a more stable connection relationship.

[0109] In an embodiment (as shown in Figure 3 The middle protrusion of the fork-shaped elastic sheet 130 is in the air, close to the contact seat 112. At this time, two or more foot structures (132, 133) of the fork-shaped elastic sheet 130 can be fixed on the base 120, thereby providing elastic support for the middle part of the fork-shaped elastic sheet 130 to contact the contact seat 112.

[0110] As shown in Figure 4As shown, the plug 110 of the elastic operating head 1 extends from the opening 121 of the base 120. The base 120 also has a reinforcing rib 123 and the like.

[0111] As shown, the base 120 of the elastic operating head 1 has a spring cover 122 for mounting the fork spring 130. As shown, Figure 5 the foot structure of the fork spring 130 is bent and mounted in the base 120. As shown, Figure 5 the foot structure of the fork spring 130 has a bending part which can more easily assist installation. For example, the first bending part 1321 and the second bending part 1322 of the first foot 132 can make it easier to insert and snap into the base 120. The base 120 also has a reinforcing rib 123 and the like. Figure 6

[0112] As shown, the fork spring 130 includes a pair of foot structures, i.e., the first foot 132 and the second foot 133. The fork spring 130 also includes a foot connecting part 131. The foot connecting part 131 can be provided with a mounting hole 1311. The foot connecting part 131 can also be provided with a mounting slot 1312. Figure 6

[0113] The mounting hole 1311 or the mounting slot 1312 can be machined on the fork spring 130 in only one of the above; the mounting hole 1311 and the mounting slot 1312 can also be machined together on the fork spring 130. The fork spring 130 can also not be machined with any mounting hole and mounting slot, and does not affect its own installation. The number of mounting holes 1311 can be zero or one or more. The number of mounting slots 1312 can be zero or one or more.

[0114] The mounting hole 1311 or the mounting slot 1312 can be used to cooperate with other components for connection, to play the role of installation and fixation; the mounting hole 1311 or the mounting slot 1312 can also be simply used for weight reduction.

[0115] One end of the foot structure is connected to the foot connecting part 131, and the other end of the foot structure is a free end. The free end, for example, Figure 6 the free end 1322 of the first foot 132, or Figure 6 the free end 1332 of the second foot 133.

[0116] The foot structure is made of elastic material to produce elastic deformation under stress. And after the external force is removed, it returns to the initial shape, thereby realizing a specific elastic function.

[0117] The cross-sectional shape of the foot structure is designed according to the functional requirements, and the surface is smooth to reduce friction with the cooperating components.

[0118] ​​In an embodiment, the foot structures are arranged in a curved manner. The center of gravity of the fork-shaped spring 130 is arranged at a position such that the spring can maintain a relatively stable posture when not subjected to external forces. When the spring is subjected to external forces, the elastic deformation of the single foot structure can cause a slight shift in the overall center of gravity of the spring, which is related to the elastic coefficient of the foot structure, the magnitude and direction of the external force, and the spring gradually returns to the vicinity of the initial position during the elastic recovery of the foot structure, so as to maintain the functionality and stability of the spring.

[0119] The number of foot structures can be two. To avoid spatial interference between multiple foot structures, the two foot structures maintain a safe distance from each other within their respective extension directions and deformation ranges. In an embodiment, as shown in Figure 6 The first foot 132 and the second foot 133 are arranged in a crossed and opposite manner. The spacing and relative position relationship between the two feet ensure precise fitting of the spring and the adapter component, achieving the function of supporting the foot connecting portion 131 and providing elastic deformation.

[0120] The number of foot structures can be three. In terms of spatial layout, two of the foot structures can be parallel or non-parallel to each other on one side of the foot connecting portion 131, and the other foot structure is on the other side of the foot connecting portion 131. To avoid spatial interference between multiple foot structures, the three foot structures maintain a safe distance from each other within their respective extension directions and deformation ranges. By precisely designing the length, bending angle, and connection position of the foot structures to the foot connecting portion 131, it is ensured that each foot structure does not collide or press during normal operation of the spring and elastic deformation under the action of external forces, thereby maintaining the stability of the spring. When the fork-shaped spring is fitted with the corresponding component, the two foot structures on one side can provide relatively concentrated elastic support and contact force, and the foot structure on the other side can play a balancing and fine positioning role, which helps to improve the stability and adaptability of the spring under complex working conditions and enhance its adaptability to different installation environments and stress conditions.

[0121] The number of the foot structures can be 3, and the 3 foot structures are respectively located at three edges of the foot connecting part 131. In order to effectively avoid the spatial interference between the plurality of foot structures, each foot structure has an independent working space in the extension direction of the respective edge, and the elastic deformation path of each foot structure in the three-dimensional space does not cross through the accurate design of the shape, size and connecting point of the foot structure on the foot connecting part 131. The unique distribution mode makes the fork-shaped elastic sheet have more balanced elastic support performance in the three-dimensional space. Each foot structure can independently provide elastic force in the direction of the edge where the foot structure is located. When external force from different directions is received, the foot structures on the three edges work cooperatively to effectively disperse the external force, reduce local stress concentration, improve the anti-deformation ability and reliability of the elastic sheet as a whole, and are particularly suitable for occasions working in a multi-directional stress environment.

[0122] The number of the foot structures can be 4. In the spatial layout, 2 foot structures can be parallel or non-parallel to each other on one side of the foot connecting part 131, and the other 2 foot structures are located on the other side of the foot connecting part 131. In order to avoid the spatial interference between the plurality of foot structures, the 4 foot structures keep a safe distance from each other in the respective extension direction and deformation range. The technical effect is similar to that of the 3 foot structures.

[0123] The number of the foot structures can be 4, and the 4 foot structures are respectively located at four edges of the foot connecting part 131. In order to effectively avoid the spatial interference between the plurality of foot structures, each foot structure has an independent working space in the extension direction of the respective edge, and the elastic deformation path of each foot structure in the three-dimensional space does not cross through the accurate design of the shape, size and connecting point of the foot structure on the foot connecting part 131. The technical effect is similar to that of the 3 foot structures.

[0124] Further, the number of the foot structures can be 5 or more. The structure and technical effect are similar to those of the 3 or 4 foot structures.

[0125] In terms of connection mode, the connection between each foot structure and the foot connecting part 131 is stable and reliable, which can be realized through integral molding, welding, riveting and the like. The strength of the connecting part is strictly calculated and tested to ensure that the connecting part does not break or loosen when the elastic sheet is stressed, thereby affecting the normal work of the elastic sheet. In addition, the transition design of the connecting part is also considered to smoothly transmit the force to the foot connecting part 131 when the foot structure is stressed, so as to avoid stress concentration.

[0126] The disclosure also provides a gating device comprising the elastic operating head 1 in any of the above embodiments.

[0127] The elastic operating head 1 in any of the above embodiments can be connected to a door control device to control the connection and disconnection of a door control circuit.

[0128] The door control device provided by the embodiments of the present disclosure comprises the elastic operating head 1 in any of the above embodiments, and the design of the elastic operating head 1 can effectively avoid poor contact, ensure good contact between the elastic operating head 1 and the door contact switch 2, and ensure normal use of the door control device.

[0129] The embodiments of the present disclosure further provide a safety door comprising the door control device in any of the above embodiments.

[0130] The safety door provided by the embodiments of the present disclosure comprises the elastic operating head 1 in any of the above embodiments in the door control device, and the design of the elastic operating head 1 can effectively avoid poor contact, ensure good contact between the elastic operating head 1 and the door contact switch 2, and ensure normal use of the door control device.

[0131] The specific embodiments described above do not constitute a limitation on the protection scope of the present disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent replacement and improvement made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A resilient operating head (1), comprising a contact (110) and a base (120), characterized in that, Also includes: Fork-shaped shrapnel (130); The fork-shaped spring (130) is disposed on the base (120); The fork-shaped spring (130) supports the contact (110).

2. The elastic operating head (1) according to claim 1, characterized in that, The fork-shaped spring (130) includes a foot connector (131) and a foot structure.

3. The elastic operating head (1) according to claim 2, characterized in that, The number of foot structures is two, and the foot structures include a first foot (132) and a second foot (133).

4. The elastic operating head (1) according to claim 2, characterized in that, The number of foot structures is three or more, and the foot structures include at least a first foot (132) and a second foot (133).

5. The elastic operating head (1) according to claim 2 or 3, characterized in that, At least two of the foot structures are arranged in an intersecting manner.

6. The elastic operating head (1) according to claim 3, characterized in that, At least two of the foot structures are arranged in parallel.

7. The elastic operating head (1) according to claim 2, characterized in that, The foot structure extends from the foot connector (131); the connection area between the foot structure and the foot connector (131) forms a first bend.

8. The elastic operating head (1) according to claim 6, characterized in that, The free ends (1322, 1332) of the foot structure have a second bend.

9. The elastic operating head (1) according to claim 2, characterized in that, The fork-shaped spring (130) is made from a piece of metal sheet.

10. The elastic operating head (1) according to claim 2, characterized in that, The foot connector (131) is provided with mounting holes (1311) and / or mounting grooves (1312).

11. The elastic operating head (1) according to claim 1, characterized in that, The fork-shaped spring (130) is disposed on the base (120) in any of the following ways: plugging, snapping, screwing, riveting, gluing, or welding.

12. The elastic operating head (1) according to claim 1, characterized in that, The contact (110) includes a contact rod (111) and a contact seat (112); The fork-shaped spring (130) has a contact surface that conforms to the shape of the contact seat (112).

13. The elastic operating head (1) according to claim 1, characterized in that, The fork-shaped spring (130) supports the contact (110) with a minimum radial movement distance of 0 to 4 mm and a maximum movement distance of 0 to 7 mm.

14. The elastic operating head (1) according to claim 1, characterized in that, Also includes: Contact guiding and positioning structure (140); The contact guide and positioning structure (140) is disposed on the base (120).

15. The elastic operating head (1) according to claim 14, characterized in that, The contact guide and positioning structure (140) includes: Guide surface; The guide surface is used to accommodate the movement of the contact (110).

16. The elastic operating head (1) according to claim 14, characterized in that, The contact guide and positioning structure (140) accommodates the contact (110) with a minimum lateral movement distance of 0 to 0.5 mm and a maximum lateral movement distance of 0 to 4 mm.

17. The elastic operating head (1) according to claim 1, characterized in that, The base (120) has a spring cover plate (122) for mounting a fork-shaped spring (130); The spring cover plate (122) is mounted on the base (120) in any of the following ways: slot, mounting base, mounting hole.

18. A gate control device, characterized in that, Includes the flexible operating head as described in any one of claims 1-17.

19. A safety door contact switch, characterized in that, Includes the gate control device as described in claim 18.

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